From d282917b821e84715e5f40e8945afc3ae523353f Mon Sep 17 00:00:00 2001 From: Packit Date: Sep 18 2020 15:00:18 +0000 Subject: gc-7.6.4 base --- diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..e500dc3 --- /dev/null +++ b/AUTHORS @@ -0,0 +1,397 @@ +This is an attempt to acknowledge contributions to the garbage collector. +Early contributions also mentioned (duplicated) in ChangeLog file; details of +later ones should be in "git log". + +HISTORY - + + Early versions of this collector were developed as a part of research +projects supported in part by the National Science Foundation +and the Defense Advance Research Projects Agency. + +The garbage collector originated as part of the run-time system for +the Russell programming language implementation. The first version of the +garbage collector was written primarily by Alan Demers. It was then refined +and mostly rewritten, primarily by Hans-J. Boehm, at Cornell U., +the University of Washington, Rice University (where it was first used for +C and assembly code), Xerox PARC, SGI, and HP Labs. However, significant +contributions have also been made by many others. + +Other contributors (my apologies for any omissions): + +Adam Megacz +Adnan Ali +Adrian Bunk +Adrian Pop +Akira Tagoh +Alain Novak +Alan Dosser +Alan J. Demers +Aleksey Demakov +Alessandro Bruni +Alex Ronne Petersen +Alexander Belchenko +Alexander Gavrilov +Alexander Herz +Alexandr Petrosian +Alexandr Shadchin +Alexandre Oliva +Alistair G. Crooks +Allan Hsu +Andre Leiradella +Andreas Jaeger +Andreas Tobler +Andrei Polushin +Andrej Cedilnik +Andrew Begel +Andrew Buss +Andrew Gray +Andrew Haley +Andrew Horton +Andrew McKinlay +Andrew Pinski +Andrew Stitcher +Andrew Stone +Andy Li +Andy Wingo +Anselm Baird-Smith +Anthony Green +Antoine de Maricourt +Ari Huttunen +Arrigo Triulzi +Ashley Bone +Assar Westerlund +Barry DeFreese +Baruch Siach +Ben A. Mesander +Ben Cottrell +Ben Hutchings +Ben Maurer +Benjamin Lerman +Bernd Edlinger +Bernd Kuhls +Bernie Solomon +Bill Janssen +Bo Thorsen +Bradley D. LaRonde +Bradley Smith +Brent Benson +Brian Alliet +Brian Beuning +Brian Burton +Brian D. Carlstrom +Brian F. Dennis +Brian Lewis +Bruce Hoult +Bruce Mitchener +Bruno Haible +Bryce McKinlay +Burkhard Linke +Carlos J. Puga Medina +Cesar Eduardo Barros +Charles Fiterman +Charles Mills +Chris Dodd +Chris Lingard +Chris Metcalf +Christian Joensson +Christian Limpach +Christian Thalinger +Christoffe Raffali +Clay Spence +Colin LeMahieu +Craig McDaniel +Dai Sato +Dan Bonachea +Dan Fandrich +Dan Sullivan +Daniel R. Grayson +Danny Smith +Darrell Schiebel +Dave Barrett +Dave Detlefs +Dave Korn +Dave Love +David Ayers +David Brownlee +David Butenhof +David Chase +David Daney +David Grove +David Leonard +David Miller +David Mossberger +David Peroutka +David Pickens +David Stes +David Terei +David Van Horn +Davide Angelocola +Dick Porter +Dietmar Planitzer +Dimitris Vyzovitis +Dimitry Andric +Djamel Magri +Doug Kaufman +Doug Moen +Douglas Steel +Eli Barzilay +Elijah Taylor +Elvenlord Elrond +Emmanual Stumpf +Eric Benson +Eric Holk +Erik M. Bray +Fabian Thylman +Fergus Henderson +Franklin Chen +Fred Gilham +Fred Stearns +Friedrich Dominicus +Gabor Drescher +Gary Leavens +Geoff Norton +George Talbot +Gerard A Allan +Glauco Masotti +Grzegorz Jakacki +Gustavo Giraldez +Gustavo Rodriguez-Rivera +H.J. Lu +Hamayama +Hannes Mehnert +Hanno Boeck +Hans Boehm +Hans-Peter Nilsson +Henning Makholm +Henrik Theiling +Hironori Sakamoto +Hiroshi Kawashima +Hiroshi Yokota +Hubert Garavel +Iain Sandoe +Ian Piumarta +Ian Searle +Igor Khavkine +Ivan Demakov +Ivan Maidanski +Jaap Boender +Jack Andrews +Jacob Navia +Jakub Jelinek +James Clark +James Dominy +Jan Alexander Steffens +Jan Wielemaker +Jani Kajala +Jean-Baptiste Nivois +Jean-Claude Beaudoin +Jean-Daniel Fekete +Jeff Sturm +Jeffrey Hsu +Jeffrey Mark Siskind +Jeremy Fitzhardinge +Jesper Peterson +Jesse Hull +Jesse Jones +Jesse Rosenstock +Ji-Yong Chung +Jie Liu +Jim Marshall +Jim Meyering +Joao Abecasis +Joerg Sonnenberger +Johannes Schmidt +Johannes Totz +John Bowman +John Clements +John Ellis +John Merryweather Cooper +Jon Moore +Jonathan Bachrach +Jonathan Chambers +Jonathan Clark +Jonathan Pryor +Joshua Richardson +Juan Jose Garcia-Ripoll +Kai Tietz +Kaz Kojima +Kazu Hirata +Kazuhiro Inaoka +Keith Seitz +Kenjiro Taura +Kenneth Schalk +Kevin Kenny +Kevin Tew +Kevin Warne +Kjetil Matheussen +Klaus Treichel +Klemens Zwischenbrugger +Knut Tvedten +Krister Walfridsson +Kristian Kristensen +Kumar Srikantan +Kurt Miller +Lars Farm +Laurent Morichetti +Linas Vepstas +Loren J. Rittle +Louis Zhuang +Lucas Meijer +Ludovic Courtes +Maarten Thibaut +Manuel A. Fernandez Montecelo +Manuel Serrano +Marc Recht +Marco Maggi +Marcos Dione +Marcus Herbert +Marek Vasut +Margaret Fleck +Mark Boulter +Mark Mitchell +Mark Reichert +Mark Sibly +Mark Weiser +Martin Hirzel +Martin Tauchmann +Matt Austern +Matthew Flatt +Matthias Andree +Matthias Drochner +Maurizio Vairani +Max Mouratov +Melissa O'Neill +Michael Arnoldus +Michael Fox +Michael Smith +Michael Spertus +Michel Schinz +Miguel de Icaza +Mikael Djurfeldt +Mike Frysinger +Mike Gran +Mike McGaughey +Mike Stump +Mitch Harris +Mohan Embar +Nathanael Nerode +Neale Ferguson +Neil Sharman +Nicolas Cannasse +Niibe Yutaka +Niklas Therning +Noah Lavine +Nobuyuki Hikichi +Oliver Kurth +Ondrej Bilka +Paolo Molaro +Parag Patel +Patrick Bridges +Patrick C. Beard +Patrick Doyle +Paul Bone +Paul Brook +Paul Graham +Paul Nash +Per Bothner +Peter Bigot +Peter Chubb +Peter Colson +Peter Housel +Peter Monks +Peter Ross +Peter Seebach +Peter Wang +Petr Krajca +Petr Salinger +Petter Urkedal +Philip Brown +Philipp Tomsich +Philippe Queinnec +Phillip Musumeci +Phong Vo +Pierre de Rop +Pontus Rydin +Radek Polak +Rainer Orth +Ranjit Mathew +Rauli Ruohonen +Regis Cridlig +Reimer Behrends +Renaud Blanch +Rene Girard +Rex Dieter +Reza Shahidi +Richard Earnshaw +Richard Henderson +Richard Sandiford +Rob Haack +Robert Brazile +Rodrigo Kumpera +Roger Sayle +Roland McGrath +Roman Hodek +Romain Naour +Romano Paolo Tenca +Rutger Ovidius +Ryan Gonzalez +Ryan Murray +Salvador Eduardo Tropea +Samuel Martin +Samuel Thibault +Scott Ananian +Scott Schwartz +Shawn Wagner +Shiro Kawai +Simon Gornall +Simon Posnjak +Slava Sysoltsev +Stefan Ring +Stefano Rivera +Sugioka Toshinobu +Suzuki Toshiya +Sven Hartrumpf +Sven Verdoolaege +Takis Psarogiannakopoulos +Tatsuya Bizenn +Terrell Russell +Thiemo Seufer +Thomas Funke +Thomas Klausner +Thomas Linder Puls +Thomas Maier +Thomas Schwinge +Thorsten Glaser +Tilman Vogel +Tim Bingham +Timothy N. Newsham +Tom Tromey +Tommaso Tagliapietra +Toralf Foerster +Toshio Endo +Tsugutomo Enami +Tum Nguyen +Tyson Dowd +Uchiyama Yasushi +Ulrich Drepper +Ulrich Weigand +Uros Bizjak +Vernon Lee +Victor Ivrii +Vitaly Magerya +Vladimir Tsichevski +Walter Bright +Walter Underwood +Wilson Ho +Wink Saville +Xi Wang +Xiaokun Zhu +Yann Dirson +Yannis Bres +Yuki Okumura +Yusuke Suzuki +Yvan Roux +Zach Saw +Zhiying Chen +Zhong Shao +Zoltan Varga diff --git a/BCC_MAKEFILE b/BCC_MAKEFILE new file mode 100644 index 0000000..4e45334 --- /dev/null +++ b/BCC_MAKEFILE @@ -0,0 +1,87 @@ +# Makefile for Borland C++ 5.5 on NT +# If you have the Borland assembler, remove "-DUSE_GENERIC" +# +bc= c:\Borland\BCC55 +bcbin= $(bc)\bin +bclib= $(bc)\lib +bcinclude= $(bc)\include + +gcinclude1 = $(bc)\gc6.2\include +gcinclude2 = $(bc)\gc6.2\cord + +cc= $(bcbin)\bcc32 +rc= $(bcbin)\brc32 +lib= $(bcbin)\tlib +link= $(bcbin)\ilink32 +cflags= -O2 -R -v- -vi -H -H=gc.csm -I$(bcinclude);$(gcinclude1);$(gcinclude2) -L$(bclib) \ + -w-pro -w-aus -w-par -w-ccc -w-rch -a4 +defines= -DALL_INTERIOR_POINTERS -DUSE_GENERIC -DNO_GETENV -DJAVA_FINALIZATION -DGC_OPERATOR_NEW_ARRAY + +.c.obj: + $(cc) @&&| + $(cdebug) $(cflags) $(cvars) $(defines) -o$* -c $*.c +| + +.cpp.obj: + $(cc) @&&| + $(cdebug) $(cflags) $(cvars) $(defines) -o$* -c $*.cpp +| + +.rc.res: + $(rc) -i$(bcinclude) -r -fo$* $*.rc + +XXXOBJS= XXXalloc.obj XXXreclaim.obj XXXallchblk.obj XXXmisc.obj \ + XXXmach_dep.obj XXXos_dep.obj XXXmark_rts.obj XXXheaders.obj XXXmark.obj \ + XXXobj_map.obj XXXblacklst.obj XXXfinalize.obj XXXnew_hblk.obj \ + XXXdbg_mlc.obj XXXmalloc.obj XXXstubborn.obj XXXdyn_load.obj \ + XXXtypd_mlc.obj XXXptr_chck.obj XXXgc_cpp.obj XXXmallocx.obj \ + XXXfnlz_mlc.obj + +OBJS= $(XXXOBJS:XXX=) + +all: gctest.exe cord\de.exe test_cpp.exe + +$(OBJS) test.obj: include\private\gc_priv.h include\private\gc_hdrs.h include\gc.h include\private\gcconfig.h MAKEFILE + +gc.lib: $(OBJS) + del gc.lib + $(lib) $* @&&| + $(XXXOBJS:XXX=+) +| + +gctest.exe: tests\test.obj gc.lib + $(cc) @&&| + $(cflags) -W -e$* tests\test.obj gc.lib +| + +cord\tests\de.obj cord\tests\de_win.obj: include\cord.h \ + include\cord_pos.h cord\tests\de_win.h cord\tests\de_cmds.h + +cord\de.exe: cord\cordbscs.obj cord\cordxtra.obj cord\tests\de.obj \ + cord\tests\de_win.obj cord\tests\de_win.res gc.lib + $(cc) @&&| + $(cflags) -W -e$* cord\cordbscs.obj cord\cordxtra.obj \ + cord\tests\de.obj cord\tests\de_win.obj gc.lib +| + $(rc) cord\tests\de_win.res cord\de.exe + +gc_cpp.obj: include\gc_cpp.h include\gc.h + +gc_cpp.cpp: gc_cpp.cc + copy gc_cpp.cc gc_cpp.cpp + +test_cpp.cpp: tests\test_cpp.cc + copy tests\test_cpp.cc test_cpp.cpp + +test_cpp.exe: test_cpp.obj include\gc_cpp.h include\gc.h gc.lib + $(cc) @&&| + $(cflags) -W -e$* test_cpp.obj gc.lib +| + +scratch: + -del *.obj *.res *.exe *.csm cord\*.obj cord\*.res cord\*.exe cord\*.csm + +clean: + del gc.lib + del *.obj + del tests\test.obj diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..d04abe9 --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,222 @@ +# +# Copyright (c) 1994 by Xerox Corporation. All rights reserved. +# Copyright (c) 1996 by Silicon Graphics. All rights reserved. +# Copyright (c) 1998 by Fergus Henderson. All rights reserved. +# Copyright (c) 2000-2010 by Hewlett-Packard Company. All rights reserved. +## +# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +# OR IMPLIED. ANY USE IS AT YOUR OWN RISK. +## +# Permission is hereby granted to use or copy this program +# for any purpose, provided the above notices are retained on all copies. +# Permission to modify the code and to distribute modified code is granted, +# provided the above notices are retained, and a notice that the code was +# modified is included with the above copyright notice. +## + +# +# get cmake and run: +# cmake -G "Visual Studio 8 2005" +# in the same dir as this file +# this will generate gc.sln +# + +SET(CMAKE_LEGACY_CYGWIN_WIN32 0) # Remove when CMake >= 2.8.4 is required + +PROJECT(gc) + +INCLUDE(CTest) + +CMAKE_MINIMUM_REQUIRED(VERSION 2.6) + +ADD_DEFINITIONS("-D_CRT_SECURE_NO_DEPRECATE + -DALL_INTERIOR_POINTERS") + +IF(APPLE) + IF("${CMAKE_OSX_ARCHITECTURES}" STREQUAL "") + SET(CMAKE_OSX_ARCHITECTURES "ppc;i386;x86_64" CACHE STRING "Build architectures for Mac OS X" FORCE) + ENDIF() +ENDIF(APPLE) + +#LIBATOMIC #TODO +#ADD_LIBRARY(atomic_ops STATIC ) +#SET_TARGET_PROPERTIES(atomic_ops PROPERTIES COMPILE_FLAGS -DNO_DEBUGGING) + + +#LIBGC + +INCLUDE_DIRECTORIES(include) +INCLUDE_DIRECTORIES(libatomic_ops/src) + +SET(SRC alloc.c reclaim.c allchblk.c misc.c mach_dep.c os_dep.c + mark_rts.c headers.c mark.c obj_map.c blacklst.c finalize.c + new_hblk.c dbg_mlc.c malloc.c stubborn.c dyn_load.c + typd_mlc.c ptr_chck.c mallocx.c gc_cpp.cc) +SET(LIBS) +OPTION(enable_threads "TODO" NO) +IF(enable_threads) + FIND_PACKAGE(Threads REQUIRED) + MESSAGE("Thread Model: ${CMAKE_THREAD_LIBS_INIT}" ) + INCLUDE_DIRECTORIES(${Threads_INCLUDE_DIR}) + SET(LIBS ${LIBS} ${Threads_LIBRARIES}) +ENDIF(enable_threads) + +OPTION(enable_parallel_mark "Parallelize marking and free list construction" NO) + +#IF(Threads_FOUND) +# ADD_DEFINITIONS("") +#ELSE +# MESSAGE("Parallel mark requires enable_threads ON" ) +#ENDIF(Threads_FOUND) + +IF(enable_parallel_mark) + ADD_DEFINITIONS("-DPARALLEL_MARK") +ENDIF(enable_parallel_mark) + +OPTION(enable_cplusplus "install C++ support" NO) + +SET(_HOST ${CMAKE_HOST_SYSTEM_PROCESSOR}--${CMAKE_SYSTEM}) #FIXME missing the vendor field.Use lowercase + +STRING(TOLOWER ${_HOST} HOST) +MESSAGE("HOST = ${HOST}") + +#Thread Detection. Relying on cmake for lib an includes. +#TODO check cmake detection +IF(CMAKE_USE_PTHREADS_INIT) + SET(SRC ${SRC} pthread_start.c pthread_support.c pthread_stop_world.c) + IF( HOST MATCHES x86-.*-linux.*|ia64-.*-linux.*|i586-.*-linux.*|i686-.*-linux.*|x86_64-.*-linux.*|alpha-.*-linux.*|sparc.*-.*-linux.*) + ADD_DEFINITIONS("-DGC_LINUX_THREADS") + ADD_DEFINITIONS("-D_REENTRANT") + ADD_DEFINITIONS("-DTHREAD_LOCAL_ALLOC") + SET(SRC ${SRC} thread_local_alloc.c) + MESSAGE("Explicit GC_INIT() calls may be required.") + ENDIF() + IF ( HOST MATCHES .*-.*-linux.*) + ADD_DEFINITIONS("-DGC_LINUX_THREADS") + ADD_DEFINITIONS("-D_REENTRANT") + ENDIF() + IF ( HOST MATCHES .*-.*-aix.*) + ADD_DEFINITIONS("-DGC_AIX_THREADS") + ADD_DEFINITIONS("-D_REENTRANT") + ENDIF() + IF ( HOST MATCHES .*-.*-hpux11.*) + MESSAGE("Only HP/UX 11 POSIX threads are supported.") + ADD_DEFINITIONS("-DGC_HPUX_THREADS") + ADD_DEFINITIONS("-D_POSIX_C_SOURCE=199506L") #TODO test -DVAR=value. Alternative is COMPILE_DEFINITIONS property + MESSAGE("Explicit GC_INIT() calls may be required.") + ADD_DEFINITIONS("-D_REENTRANT") #TODO + ENDIF() + IF ( HOST MATCHES .*-.*-hpux10.*) + MESSAGE("Only HP/UX 11 POSIX threads are supported.") + ENDIF() + IF ( HOST MATCHES .*-.*-openbsd.*) + ADD_DEFINITIONS("-DGC_OPENBSD_THREADS") + ENDIF() + IF ( HOST MATCHES .*-.*-freebsd.*) + MESSAGE("FreeBSD does not yet fully support threads with Boehm GC.") + ADD_DEFINITIONS("-DGC_FREEBSD_THREADS") + ENDIF() + IF ( HOST MATCHES .*-.*-kfreebsd.*-gnu) + ADD_DEFINITIONS("-DGC_FREEBSD_THREADS") + ADD_DEFINITIONS("-D_REENTRANT") + ADD_DEFINITIONS("-DTHREAD_LOCAL_ALLOC") + ADD_DEFINITIONS("-DUSE_COMPILER_TLS") + SET(SRC ${SRC} thread_local_alloc.c) + ENDIF() + IF ( HOST MATCHES .*-.*-gnu.*) + ADD_DEFINITIONS("-DGC_GNU_THREADS") + ADD_DEFINITIONS("-D_REENTRANT") + ADD_DEFINITIONS("-DTHREAD_LOCAL_ALLOC") + SET(SRC ${SRC} thread_local_alloc.c) + ENDIF() + IF ( HOST MATCHES .*-.*-netbsd.*) + MESSAGE("Only on NetBSD 2.0 or later.") + ADD_DEFINITIONS("-DGC_NETBSD_THREADS") + ADD_DEFINITIONS("-D_REENTRANT") + ADD_DEFINITIONS("-D_PTHREADS") + ENDIF() + IF ( HOST MATCHES .*-.*-solaris.*) + ADD_DEFINITIONS("-DGC_SOLARIS_THREADS") + ADD_DEFINITIONS("-DTHREAD_LOCAL_ALLOC") + SET(SRC ${SRC} thread_local_alloc.c) +#TODO +# if test "$GCC" != yes; then +# CFLAGS="$CFLAGS -O" +# need_atomic_ops_asm=true +# fi + + ENDIF() + IF ( HOST MATCHES .*-.*-irix.*) + ADD_DEFINITIONS("-DGC_IRIX_THREADS") + ENDIF() + IF ( HOST MATCHES .*-.*-cygwin.*) + ADD_DEFINITIONS("-DGC_THREADS") + ADD_DEFINITIONS("-DTHREAD_LOCAL_ALLOC") + SET(SRC ${SRC} thread_local_alloc.c win32_threads.c) + ENDIF() + IF ( HOST MATCHES .*-.*-darwin.*) + ADD_DEFINITIONS("-DGC_DARWIN_THREADS") + ADD_DEFINITIONS("-DTHREAD_LOCAL_ALLOC") + MESSAGE("Explicit GC_INIT() calls may be required.") + SET(SRC ${SRC} darwin_stop_world.c thread_local_alloc.c) + #TODO + #darwin_threads=true + ENDIF() + IF ( HOST MATCHES .*-.*-osf.*) + ADD_DEFINITIONS("-DGC_OSF1_THREADS") + IF(enable_parallel_mark) + ADD_DEFINITIONS("-DTHREAD_LOCAL_ALLOC") + SET(SRC ${SRC} thread_local_alloc.c) + MESSAGE("Explicit GC_INIT() calls may be required.") + # May want to enable it in other cases, too. + # Measurements haven't yet been done. + ENDIF() + ENDIF() + IF ( HOST MATCHES .*-.*-linux.*) + ADD_DEFINITIONS("-DGC_LINUX_THREADS") + ADD_DEFINITIONS("-D_REENTRANT") + ENDIF() +ENDIF(CMAKE_USE_PTHREADS_INIT) + +IF(CMAKE_USE_WIN32_THREADS_INIT) + ADD_DEFINITIONS("-DGC_THREADS") + IF(enable_parallel_mark) + ADD_DEFINITIONS("-DTHREAD_LOCAL_ALLOC") + SET(SRC ${SRC} thread_local_alloc.c) + ENDIF() + ADD_DEFINITIONS("-DEMPTY_GETENV_RESULTS") #TODO test + SET(SRC ${SRC} win32_threads.c) +ENDIF(CMAKE_USE_WIN32_THREADS_INIT) + +OPTION(enable_gcj_support "Support for gcj" NO) +IF(enable_gcj_support) + ADD_DEFINITIONS("-DGC_GCJ_SUPPORT") + IF(enable_threads) + ADD_DEFINITIONS("-DGC_ENABLE_SUSPEND_THREAD") + ENDIF(enable_threads) + SET(SRC ${SRC} gcj_mlc.c) +ENDIF(enable_gcj_support) + + +ADD_LIBRARY( gc-lib STATIC ${SRC}) +SET_TARGET_PROPERTIES(gc-lib PROPERTIES + COMPILE_DEFINITIONS GC_NOT_DLL) +#TODO TARGET_LINK_LIBRARIES(... ... ${LIBS}) + +ADD_LIBRARY( gcmt-lib STATIC ${SRC}) +SET_TARGET_PROPERTIES(gcmt-lib PROPERTIES + COMPILE_DEFINITIONS GC_NOT_DLL) + +ADD_LIBRARY( gcmt-dll SHARED ${SRC}) + +IF(WIN32) + ADD_EXECUTABLE(cord cord/cordbscs.c cord/cordxtra.c + cord/tests/de.c cord/tests/de_win.c) + SET_TARGET_PROPERTIES(cord PROPERTIES WIN32_EXECUTABLE TRUE) + SET_TARGET_PROPERTIES(cord PROPERTIES + COMPILE_DEFINITIONS GC_NOT_DLL) + TARGET_LINK_LIBRARIES(cord gc-lib) + TARGET_LINK_LIBRARIES(cord gdi32) +ENDIF(WIN32) + +ADD_SUBDIRECTORY(tests) diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..59864d1 --- /dev/null +++ b/ChangeLog @@ -0,0 +1,9307 @@ + +== [7.6.4] 2018-01-26 == + +* Add note of set_free_space_divisor, set_warn_proc ABI change after gc-7.1 +* Change compiler invocation example in gc.man to use dynamic libgc +* Delete dont_ar_* build intermediate files on make clean (Makefile.direct) +* Do not declare dl_iterate_phdr as weak for DragonFly +* Fix 'cords' parallel build in Makefile.direct +* Fix 'undeclared identifier USRSTACK' compiler error on OpenBSD-6.2 +* Fix error code in abort message if sem_wait failed in start_world (NetBSD) +* Fix GC allocation mutex in child after a fork +* Fix global operator delete definition for C++14 in gc_cpp +* Fix last_reclaimed..gc_no interval comparison to threshold in unmap_old +* Fix libgc version which was changed in linkage breaking way +* Fix missing EOLn output in threadlibs tool +* Fix threadlibs tool to output '-lpthread' for DragonFly +* Prevent DATASTART redefinition for NaCl +* Remove obsolete advice about linking with _DYNAMIC=0 (Linux) + + +== [7.6.2] 2017-12-23 == + +* Add assertion that no hb_n_marks underflow occurs +* Add minimal testing of GC_MALLOC_[ATOMIC_]WORDS and GC_CONS (gctest) +* Add minimal testing of GC_set_bit (gctest) +* Add more cases to huge_test to cover sizes close to word-type maximum +* Add testing of new[]/delete[] (test_cpp) +* Adjust AO_HAVE_x check to match AO_fetch_and_add primitive variant used +* Adjust code indentation of calloc_explicitly_typed +* Align local_mark_stack in help_marker explicitly +* Allow custom TRACE_ENTRIES value +* Allow gctest and thread_leak_test with zero NTHREADS +* Avoid data race in finalized_count (gctest) +* Code refactoring of divide-by-HBLKSIZE occurrences +* Code refactoring of huge_test +* Code refactoring of tests/subthread_create regarding AO add primitive +* Compile thread_local_alloc only if multi-threaded build (Makefile.am) +* Delete preprocessor output on make clean (Makefile.direct) +* Disable implicit multi-threaded mode for Win32 to avoid LOCK crash +* Do not disable parallel mark for WRAP_MARK_SOME +* Do not enable mprotect-based incremental mode if unmapping is on (gctest) +* Do not install documentation if configure --disable-docs (new option) +* Do not use tkill (Android) +* Document base and size of objects allocated by finalized_malloc +* Document configure 'syntax error' issue in README +* Eliminate 'address of local variable returned' static analyzer warning +* Eliminate 'array vs singleton' code defect in typed_test (gctest) +* Eliminate 'assigned value never used' CSA warning in min_bytes_allocd +* Eliminate 'boolean result used in bitwise op' cppcheck false warning +* Eliminate 'C-style pointer casting' cppcheck style warnings in test +* Eliminate 'checking if unsigned variable is <0' cppcheck style warning +* Eliminate 'class member var with name also defined in parent' warning +* Eliminate 'comparison is always false' static analyzer warning in finalize +* Eliminate 'Condition 0==datastart always false' cppcheck warning (dyn_load) +* Eliminate 'condition is always true' cppcheck style warning +* Eliminate 'constructor with 1 argument is not explicit' cppcheck warning +* Eliminate 'CORD_*printf is never used' cppcheck style warnings (cordtest) +* Eliminate 'dereference of null' CSA false warning in array_mark_proc +* Eliminate 'function result not used' code defect in GC_mark_local +* Eliminate 'GC_collecting is set but never used' code defect (Win32) +* Eliminate 'GC_record_fault is never used' cppcheck style warning +* Eliminate 'integer shift by a negative amount' code defect in finalize +* Eliminate 'label not used' cppcheck false warnings in GC_mark_X +* Eliminate 'memory leak' code defect for scratch-allocated memory +* Eliminate 'memory leak' code defect in remove_specific +* Eliminate 'non-null arg compared to null' warning in toggleref_add (GCC) +* Eliminate 'non-reentrant function strtok called' cppcheck warning (POSIX) +* Eliminate 'possible integer underflow' code defect (cord-de) +* Eliminate 'potential overflow' static analyzer warning in test +* Eliminate 'printf format specifies type void*' GCC pedantic warnings +* Eliminate 'scope of variable can be reduced' cppcheck warnings +* Eliminate 'suspicious pointer subtraction' cppcheck warning (gc_cpp) +* Eliminate 'this statement may fall through' GCC warnings +* Eliminate 'unnecessary comparison of static strings' cppcheck warning +* Eliminate 'unsafe vsprintf is deprecated' compiler warning +* Eliminate 'unused formal parameter' compiler warnings in C++ code (MS VC) +* Eliminate 'unused variable' compiler warning in remove_all_threads_but_me +* Eliminate 'use of vulnerable sprintf' code defect in de_win test (cord) +* Eliminate 'value exceeds maximum object size' GCC warning in huge_test +* Eliminate 'value of CLOCK_TYPE unknown' cppcheck info message +* Eliminate 'value of DATASTART2 unknown' cppcheck info messages +* Eliminate 'value of GC_PTHREAD_EXIT_ATTRIBUTE unknown' cppcheck messages +* Eliminate 'value of GC_RETURN_ADDR_PARENT unknown' cppcheck info messages +* Eliminate 'value of NEED_FIXUP_POINTER unknown' cppcheck info messages +* Eliminate 'write to memory that was const-qualified' code analyzer warning +* Eliminate all 'scope of variable can be reduced' cppcheck style warnings +* Eliminate CSA warning about incorrect cast applied to HBLK_OBJS +* Eliminate CSA warning about narrowing cast in CleanUp of test_cpp +* Eliminate CSA warning of non-virtual destructor in test_cpp base class +* Eliminate CSA warning of staticroot that can be a local variable (tests) +* Eliminate CSA warning of unmodified non-const static var (disclaim_test) +* Eliminate redundant local variable in register_finalizer +* Eliminate TSan (Thread Sanitizer) warnings in gctest +* Eliminate UBSan warning of overflow during descr subtraction in mark_from +* Eliminate unreachable PROC/DEFAULT_VDB GC_printf calls in gctest main() +* Eliminate unsigned fl_builder_count underflow in mark_thread +* Enable GC_is_tmp_root for all platforms +* Execute more single-threaded GC tests by CMake +* Expand tabs to spaces in de_win.rc (tests) +* Export GC_dump_finalization/regions() +* Export GC_is_tmp_root() and GC_print_trace[_inner]() +* Export GC_print_free_list() +* Fix '32-bit value shift followed by expansion to 64-bit' code defect +* Fix 'GC_written_pages never read' code defect (GWW_VDB) +* Fix 'label cannot be reached' static analyzer warning in disclaim_test +* Fix 'size of tv is unknown' error in brief_async_signal_safe_sleep (musl) +* Fix 'syntax error' reported by cppcheck for mach_dep +* Fix 'unknown type name GC_INNER' compilation error (FreeBSD) +* Fix 'variable assigned a value that is never used' cppcheck style warnings +* Fix 'void pointers in calculations: behavior undefined' cppcheck warning +* Fix assertion violation about disabled cancel in try_to_collect_inner +* Fix atomic_ops build in Makefile.direct for Solaris +* Fix Clang static analyzer warning about not found gc_priv.h in extra files +* Fix compilation error in get_main_stack_base (Emscripten) +* Fix compilation for winpthreads if HANDLE_FORK +* Fix compilation if configured with --enable-werror on OS X +* Fix cord/de build in Makefile.direct (Linux) +* Fix data race in a list referenced by A.aa (gctest) +* Fix data race in collectable_count (gctest) +* Fix data race in do_local_mark when comparing active_count to helper_count +* Fix data race in GC_suspend/resume_thread +* Fix data race in last_stop_count access (suspend_handler_inner) +* Fix data race in make_descriptor when setting explicit_typing_initialized +* Fix data race in mark_thread when updating mark_no +* Fix data race when getting object size in explicitly-typed allocators +* Fix deadlock in GC_suspend_thread +* Fix gctest failure for Darwin if CPPCHECK is defined +* Fix lack of barriers to synchronize memory for suspend_handler +* Fix marking of disclaim-reachable objects in the incremental mode +* Fix message of VDB implementation used if MPROTECT_VDB+GWW_VDB (gctest) +* Fix missing started_thread_while_stopped call from mark_some if GCC/Clang +* Fix null dereference in GC_stack_range_for if not DARWIN_DONT_PARSE_STACK +* Fix page calculation in checksums +* Fix parallel build in Makefile.direct +* Fix test_cpp and c++ parallel build in Makefile.direct +* Fix typo in comment of GC_mark_some +* Fix typos in cdescr.html and README.sgi +* Make GC_INIT optional for clients even if thread-local allocations enabled +* Match uclinux pattern in configure +* Move conditional GC_need_to_lock setting to gc_locks.h (refactoring) +* Move README.QUICK from DOC_FILES to OTHER_FILES in Makefile.direct +* New API function (GC_is_init_called) to check if BDWGC is initialized +* New target (check-cpp) in Makefile.direct +* Prevent abort in register_data_segments for Symbian and Emscripten +* Prevent multiple 'Caught ACCESS_VIOLATION in marker' per collection +* Print realloc_count value in gctest +* Put invariant name in quotes to make mark_state comments clearer +* Refine configure messages when checking for compiler option support +* Remove extraneous semicolons after AC_MSG_WARN (configure) +* Remove page_was_dirty and remove_protection duplicate definitions +* Remove unnecessary type casts of printf arguments to unsigned long +* Remove unused ALIGN_DOUBLE, USE_GENERIC_PUSH_REGS macros (TILE-Gx/Pro) +* Rename 'test' to 'check' target in Makefile.direct +* Replace deprecated rewind to fseek in cordxtra +* Report gcc/clang pedantic warnings (configure) +* Skip thread suspend/resume API testing for Tru64 (OSF1) +* Support AddressSanitizer (Clang/GCC) and MemorySanitizer (Clang) +* Support GC_init (and get_stack_base) from non-main thread on FreeBSD/NetBSD +* Suppress 'tainted string passed to vulnerable operation' false defects +* Suppress 'taking address of label non-standard' GCC/Clang pedantic warning +* Test GC initialization from non-main thread on FreeBSD and NetBSD +* Test GCJ object creation with length-based descriptor (gctest) +* Update comment in finalized_disclaim to match FINALIZER_CLOSURE_FLAG +* Update README regarding make cords with Makefile.direct +* Update README to use autogen.sh on build from the source repository +* Update shared libraries version info to differentiate against v7.4 +* Use mprotect instead of mmap in GC_unmap() on Cygwin +* Use same style of include gc.h in documentation +* Workaround '!GC_page_size is always false' cppcheck style warning +* Workaround '#error' cppcheck error messages +* Workaround '32-bit value shift by >31 bits is undefined' cppcheck warnings +* Workaround 'array compared to 0', 'untrusted loop bound' false defects +* Workaround 'bad address arithmetic' static analysis tool false positive +* Workaround 'checking if unsigned value is negative' cppcheck warning +* Workaround 'checking unsigned value is negative' code defect in mark_from +* Workaround 'comparison of identical expressions' false code defects +* Workaround 'Condition 0!=GETENV() is always false' cppcheck style warnings +* Workaround 'condition is always false' cppcheck warning in get_next_stack +* Workaround 'condition is always true' cppcheck style warnings in GC_init +* Workaround 'function is never used' cppcheck style warnings +* Workaround 'insecure libc pseudo-random number generator used' code defect +* Workaround 'int shift by negative amount' false code defect in finalize +* Workaround 'local variable size too big' static analyzer warning +* Workaround 'memory leak: result' cppcheck false error (POSIX) +* Workaround 'null pointer dereference' false positive in push_next_marked +* Workaround 'obsolescent bcopy, bzero called' cppcheck warnings (POSIX) +* Workaround 'obsolescent usleep called' cppcheck warning (POSIX) +* Workaround 'obsolete function alloca() called' cppcheck warnings +* Workaround 'passing untyped NULL to variadic function' cppcheck warning +* Workaround 'pointer used before comparison to null' code defect (pthread) +* Workaround 'possible null pointer dereference' cppcheck warnings +* Workaround 'potential multiplication overflow' code defect in de_win (cord) +* Workaround 'redundant assignment of *result to itself' cppcheck warning +* Workaround 'resource leak' false positives in alloc_MS, bl/envfile_init +* Workaround 'same expression on both sides of ==' cppcheck style warning +* Workaround 'same expression on both sides of OR' cppcheck style warning +* Workaround 'struct member is never used' cppcheck style warnings +* Workaround 'tainted int used as loop bound' static analysis tool warning +* Workaround 'Uninitialized variable' cppcheck errors +* Workaround 'unused variable' cppcheck style warnings +* Workaround 'va_list used before va_start' cppcheck error in cord +* Workaround 'value of macro unknown' cppcheck info messages +* Workaround 'value of REDIRECT_MALLOC/FREE unknown' cppcheck info messages +* Workaround 'value of SIGBUS unknown' cppcheck info messages +* Workaround 'value of WINAPI unknown' cppcheck info messages +* Workaround 'variable hides enumerator with same name' cppcheck warnings +* Workaround 'variable reassigned before old value used' cppcheck warnings +* Workaround 'waiting while holding lock' code defect in stop_world (Unix) +* Workaround false 'uninitialized var use' code defect (initsecondarythread) +Also, includes 7.4.6 changes + + +== [7.6.0] 2016-08-02 == + +* ABORT_ARGn log details at INFO level (Android) +* Add 'pragma message' to gc.h to detect inconsistent WIN64/_WIN64 (MS VC) +* Add API function to calculate total memory in use by all GC blocks +* Add API function to set/modify GC log file descriptor (Unix) +* Add alloc_size attribute to GC_generic_malloc +* Add alt-stack registration support +* Add assertion for GC_new_kind boolean arguments +* Add assertion on lock status to GC_alloc_large and its callers +* Add build scripts for VC 9 (Win32/64) +* Add build system plumbing for building with -Werror +* Add incremental GC support for Darwin/arm64 +* Add profiling callback events to indicate start/end of reclaim phase +* Add support for enumerating the reachable objects in the heap +* Add toggle-ref support (following Mono GC API) +* Added instructions to README.md for building from git +* Adjust code indentation of malloc/calloc/str[n]dup +* Allow fork() automatic handling on Android with API level 21+ +* Allow specific TLS attributes for GC_thread_key +* Allow thread local allocations from within pthread TLS destructors +* Allow to force GC_dump_regularly set on at compilation +* Altera NIOS2 support +* Change 'cord' no-argument functions declaration style to ANSI C +* Check DATASTART is less than DATAEND even assertions off +* Check for execinfo.h by configure +* Code refactoring of GC_push_finalizer/thread/typed_structures +* Code refactoring regarding 'data start' definition for FreeBSD +* Consistently set type of DATASTART/END to ptr_t (code refactoring) +* Consistently use int[] type for '_end' symbol (code refactoring) +* Consistently use outermost parentheses for DATASTART/END, STACKBOTTOM +* Define GC_LINUX_THREADS, NO_EXECUTE_PERMISSION in configure for NaCl +* Define ROUNDUP_PAGESIZE, ROUNDUP_GRANULE_SIZE macros (code refactoring) +* Define public GC_GENERIC_OR_SPECIAL_MALLOC and GC_get_kind_and_size +* Do no declare kernel_id field of GC_Thread_Rep for 64-bit Android +* Do not allow SHORT_DBG_HDRS if KEEP_BACK_PTRS or MAKE_BACK_GRAPH +* Do not warn of missing PT_GNU_RELRO segment when custom DSO filter used +* Document GC_register_my_thread returned value +* Dump the block information in CSV format +* Eliminate redundant *flh check for null in GC_allocobj +* Enable atomic-uncollectable in operator new in gc_cpp.h +* Enable build with musl libc +* Enable gc.h inclusion by client without implicit include windows.h (Win32) +* Enable huge_test for Win64 (and LLP64 target) +* Enable thread-local storage for Android Clang +* Enable thread-local storage usage for GC_malloc/calloc_explicitly_typed +* Export GC_push_all_eager, GC_push_finalizer_structures +* Fix 'arg parameter might be clobbered by setjmp' compiler warning +* Fix assertion in GC_mark_from for non-heap regions +* Fix compilation for Android clang/arm with bfd linker +* Fix integer shift undefined behavior in GC_init_explicit_typing +* Fix missing new-line and redundant trailing dot in WARN messages +* Fix STACKBOTTOM for Solaris 11/x86 +* Fix tag collision between ENABLE_DISCLAIM and KEEP_BACK_PTRS +* Fix unchecked fork() result in gctest (Unix, Cygwin) +* Fix user-defined signals drop by marker threads +* Fix various typos in comments and documentation +* FreeBSD/arm support improvement +* GC_make_descriptor code refactoring (eliminate two local variables) +* GC_malloc[_atomic] global and thread-local generalization with kind +* GC_malloc_[atomic_]uncollectable generalization +* GC_scratch_alloc code refactoring (and WARN message improvement) +* Group all compact fields of GC_arrays to fit in single page +* Handle load_segs overflow in register_dynlib_callback gracefully +* Harmonize OSX/iOS configuration; enable compiling for iPhone simulator +* Implement event callbacks for profiling (following Mono GC API) +* Implement the finalization extension API +* Implement thread suspend/resume API (Linux threads only) +* Improve documentation for disappearing links in gc.h +* Make heap growth more conservative after GC_gcollect_and_unmap call +* Mark fo_head, finalize_now with a single GC_push_all call (refactoring) +* Move MessageBox invocation code from GC_abort to a separate routine (Win32) +* NaCl/arm initial support; NaCl runtime fixes for other CPUs +* New macro (GC_ALWAYS_MULTITHREADED) to set multi-threaded mode implicitly +* New macro (NO_WINMAIN_ENTRY) to prefer main() instead of WinMain in test +* New macro (REDIRECT_MALLOC_IN_HEADER) to enable source-level redirection +* Process all PT_LOAD segments before PT_GNU_RELRO segments (Glibc) +* Re-implement GC_finalized_malloc using GC_malloc_kind +* Refactoring of android_thread_kill/pthread_kill calls +* Refactoring of GC_Xobjfreelist (use single array to keep free lists) +* Refactoring of thread-local *_freelists (use single array of free lists) +* Refine description in README how to build from source repository +* Refine GC_free_space_divisor comment regarding its initial value +* Reformat code of gc_cpp.cc/h +* Remove 'opp' local variable in GC_malloc_X +* Remove 'sig' argument of GC_suspend_handler_inner (code refactoring) +* Remove code commented out by 'ifdef UNDEFINED' +* Remove hb_large_block field (use 1 extra bit of hb_flags instead) +* Remove obsolete BACKING_STORE_ALIGNMENT/DISPLACEMENT macros for Linux/IA64 +* Remove redundant casts in GC_generic_or_special_malloc and similar +* Remove unsupported FreeBSD/ia64 case from gcconfig.h file +* Remove unused GC_gcjdebugobjfreelist +* Rename ATOMIC_UNCOLLECTABLE to GC_ATOMIC_UNCOLLECTABLE +* Replace non-API occurrences of GC_word to word (code refactoring) +* Return GC_UNIMPLEMENTED instead of abort in GC_get_stack_base (OS/2) +* Show WoW64 warning message if running 32-bit on Win64 (enabled by macro) +* Standalone profiling callback for threads suspend/resume +* Support (add machine description for) TILE-Gx and TILEPro targets +* Support build for Android 64-bit (arm64, mips64, x86_64) +* Support FreeBSD/aarch64, FreeBSD/mips +* Support iOS7 64-bit (AArch64) and iOS8+ 32/64-bit (Darwin) +* Support MinGW build in scripts +* Turn off sigsetjmp workaround for Android/x86 starting from NDK r8e +* Use magic header on objects to improve disclaim_test +* Workaround 'sa_sigaction member missing' compiler error (Android/x32) +* Workaround 'unresolved __tls_get_addr' error for Android NDK Clang +* Workaround a bug in winpthreads causing parallel marks deadlock (MinGW) +Also, includes 7.4.4 changes + + +== [7.4.10] 2018-01-22 == + +* Fix error code in abort message if sem_wait failed in start_world (NetBSD) +Also, includes 7.2j changes + + +== [7.4.8] 2017-12-22 == + +* Eliminate 'this statement may fall through' GCC warnings +* Eliminate 'value exceeds maximum object size' GCC warning in huge_test +* Fix data race in make_descriptor when setting explicit_typing_initialized +* Fix marking of disclaim-reachable objects in the incremental mode +* Update comment in finalized_disclaim to match FINALIZER_CLOSURE_FLAG +Also, includes 7.2i changes + + +== [7.4.6] 2017-10-26 == + +* Add configure --enable-gcov option (enable code coverage analysis) +* Add configure check whether to define NO_GETCONTEXT +* Adjust GC_memalign comment +* Allow HAVE_DL_ITERATE_PHDR to be defined by client (musl) +* Allow PKG_CHECK_MODULES in configure.ac to be commented out easily +* Avoid busy waiting in mark_thread while GC_parallel is false +* Better document minimum value of size argument for typed allocations +* Change type of THREAD_TABLE_INDEX result to int in win32_threads.c +* Consistently use 'msec' instead of 'ms' in comments in pthread_support +* Do not define amiga_get_mem, MacTemporaryNewPtr unless really used (extra) +* Do not produce .tar.bz2 distribution file (configure) +* Do not require libatomic_ops for single-threaded builds (configure) +* Do not warn of missing PT_GNU_RELRO segment when custom DSO filter used +* Document GWW_VDB in gcdescr.html +* Eliminate 'cast to void* from int' compiler warnings (Darwin/x64) +* Eliminate 'conditional expression is always true' code defect in GC_init +* Eliminate 'FP divide-by-zero' static analyzer warning +* Eliminate 'incompatible function pointer' warning in mark_some (MinGW/x86) +* Eliminate 'ISO C forbids an empty translation unit' GCC pedantic warning +* Eliminate 'ISO C forbids object to function pointer conversion' warning +* Eliminate 'locally defined symbol imported' MS linker warnings (cord) +* Eliminate 'null dereference' code defect warning in register_finalizer +* Eliminate 'possible loss of data' compiler warnings (MS VC) +* Eliminate 'printf format specifier mismatch' compiler warning (tools) +* Eliminate 'type defaults to int in declaration' warning (REDIRECT_MALLOC) +* Eliminate 'value stored is never read' warning of Clang static analyzer +* Eliminate duplicate log messages in GC_mark_from +* Eliminate most of collisions in GC_threads on Linux/x64 +* Ensure GC initialized when atfork_prepare is called by client +* Fix 'arg parameter might be clobbered by setjmp' compiler warning +* Fix 'bogus LR' detection in FindTopOfStack (Darwin) +* Fix 'execvp argument incompatible pointer type' compiler warning (tools) +* Fix 'GetVersion deprecated' compiler warning in os_dep (MS VC) +* Fix 'incompatible pointer' compiler warning in GC_init_dyld (OS X 64-bit) +* Fix 'incompatible ptr-to-int conversion' compiler warning in push_all_stack +* Fix 'ISO C90 does not support %lf, %lg gnu_printf formats' GCC warnings +* Fix 'ISO C90 forbids mixed declarations and code' compiler warning +* Fix 'missing libc-version.h' build error (uClibc/x86[_64]) +* Fix 'replacement operator delete cannot be inline' GCC warning (Cygwin) +* Fix 'variable unused' compiler warning in FirstDLOpenedLinkMap +* Fix 'zero-size array is extension' Clang warning in os_dep (Linux/x86) +* Fix (adjust) GC_scratch_alloc actual argument type +* Fix deadlock in GC_help_marker caused by use of mark_cv of parent process +* Fix finalize.c compilation in 'strict ANSI' mode +* Fix GC shared library tests failure related to dl_iterate_phdr (musl) +* Fix gc.h compliance to strict ANSI (pthreads) +* Fix GC_bytes_allocd incrementation in case of allocation failure +* Fix GC_jmp_buf multiple definition +* Fix GC_noop6 definition to avoid its calls to be optimized away +* Fix gctest failure if PARALLEL_MARK (musl) +* Fix gctest thread stack overflow (musl-gcc) +* Fix initsecondarythread_test runtime failure if GC compiled w/o threads +* Fix lack of 2 trailing zeros in _MSC_VER numbers +* Fix local variable declarations in disclaim_bench +* Fix missing #error pragma +* Fix missing .exe for disclaim test filenames in Makefile (MinGW) +* Fix missing atomic/[un]collectable/realloc_count increments in gctest +* Fix missing new-line and redundant trailing dot in WARN messages +* Fix missing new-line at format strings end in subthread_create test +* Fix mixed include of GC public header and gc_priv.h in disclaim bench/test +* Fix potential overflow in decrement when computing GC_markers_m1 +* Fix printf format specifiers in extra files (cppcheck warnings) +* Fix pthread_start compilation if single-obj-compilation (Linux) +* Fix register_finalizer call in disclaim_bench for GC_DEBUG +* Fix static assertion violation in LONG_MULT for 64-bit targets +* Fix tag collision between ENABLE_DISCLAIM and KEEP_BACK_PTRS +* Fix thread id leaks in subthread_create and threadkey_test +* Fix threaded tests runtime crash if GC_NO_THREAD_REDIRECTS supplied +* Fix tools/setjmp_t to prevent nested_sp inlining +* Fix typo in CHECK_GCLIB_VERSION name (test) +* Fix typos in comments/documentation (ews4800, extend_size_map, push_roots) +* Fix unchecked fork() result in gctest (Unix, Cygwin) +* Improve detection of internal libatomic_ops (configure) +* Move libraries version info to the beginning of Makefile.am +* Prevent abort in register_data_segments for Symbian +* Process all PT_LOAD segments before PT_GNU_RELRO segments (Glibc) +* Refine Makefile.direct comment about multi-threaded GC build +* Refine README about library source downloading +* Refine should_invoke_finalizers documentation +* Remove all generated files by NT_X64_THREADS_MAKEFILE 'clean' target +* Remove non-existent configure option in simple_example.html +* Replace C++ style comments to C ones, remove commented out code (extra) +* Support CFLAGS_EXTRA to pass extra user-defined compiler flags (configure) +* Support CFLAGS_EXTRA when checking for inline and dladdr (configure) +* Suppress 'tainted string passed to vulnerable operation' false defects +* Suppress MS VC warnings about unused param, const condition (NT_MAKEFILE) +* Update bdwgc mailing list online archive link in documentation +* Update shared libraries version info to differentiate against v7.2 +* Use AC_DEFINE for defining NO_GETCONTEXT in configure +* Workaround 'index out of bounds' UBSan false warning in push_marked +* Workaround 'mmap() resource handle leak' static analyzer warning +* Workaround 'redundant assignment of *result to itself' cppcheck warning +* Workaround 'resource leak' error reported by cppcheck (tools, test) +Also, includes 7.2h changes + + +== [7.4.4] 2016-05-25 == + +* Allow GC_FAST_MALLOC_GRANS() multiple use in a function +* Also enable the TSX workaround for i386 (Linux) +* Avoid unstructured procfs on Solaris +* Change cord/de main() declaration style from K-R to ANSI C +* Change no-argument functions declaration style to ANSI C (cord) +* Do not include sigcontext.h and asm/sigcontext.h +* Eliminate 'divide by zero' compiler warning in cordtest +* Eliminate warning about 64-bit pointer-to-int cast (Win64/pthreads-w32) +* Eliminate warnings detected by Cppcheck in cord de[_win] +* Fix 'comparison of non-null parameter is always false' warning (Clang) +* Fix 'CORD_iter5 unused result' code defect in cordxtra +* Fix 'GC_generic_malloc_inner_ignore_off_page not used' compiler warning +* Fix 'implicit declaration of vsnprintf' GCC warning (if strict ANSI mode) +* Fix 'signed-to-bigger-unsigned value assignment' in GC_init_size_map +* Fix 'signed-to-bigger-unsigned value assignment' warning for hb_map +* Fix 'signed-to-bigger-unsigned value assignment' warning in GC_setpagesize +* Fix 'statement unreachable' compiler warning in GC_mark_from +* Fix 'statement unreachable' compiler warning in memalign +* Fix 'unused label' compiler warning in cord/de +* Fix 'value truncated' compiler warning in CORD_cat (MS VC) +* Fix 'variable unused' warning in GC_save_callers +* Fix 'visibility attribute not supported' GCC warning (IBM AIX) +* Fix CMake warning about CMP0054 by unquoting instances of HOST +* Fix Cygwin64 build +* Fix GC_REALLOC to call GC_FREE if new size is zero and pointer is non-NULL +* Fix Makefile.direct for Cygwin +* Fix __alloc_size__ availability detection (Clang) +* Fix abort message in GC_move_long_link +* Fix and code refactoring of lock elision workaround (Linux/x64) +* Fix assertion on mark_lock_holder for non-unique NUMERIC_THREAD_ID +* Fix data race in GC_init_explicit_typing +* Fix gc.mak regarding msvc_dbg and test (MSVC) +* Fix missing error handling of pthread_attr_init/getstacksize +* Fix missing error handling of pthreads_mutex_init and cond_wait +* Fix missing numeric casts in cord +* Fix potential left shift overflows in finalize.c (64-bit targets) +* Fix pthreads-win32 name in comments and documentation +* Fix setup_mark_lock missing prototype +* Fix unchecked fcntl() result +* Fix unchecked pointer dereference in check_ints (gctest) +* Fix unchecked pthread_join() result in threadkey_test +* Fix unchecked sigdelset() result in pthread_support +* Fix undefined PTRFREE/NORMAL in gc_inline.h +* Prefix PREFETCH_FOR_WRITE with GC_ as used in gc_inline.h public header +* Relax mark_mutex attribute needed to disable elision (Linux/x64) +* Remove (deprecate) TODO file +* Remove code duplication in GC_realloc +* Remove duplicate new-line in OUT_OF_MEMORY message (cord) +* Remove references to missing linux_threads.c from documentation +* Revert "Move asm machine-dependent files to 'src' folder" (partly) +* Support Android API level 21 +* Update compiler options in gc.mak (Win32) +* Use mmap instead of sbrk (Hurd) +* Workaround 'comparison is always false' GCC warning in GC_FAST_MALLOC_GRANS +* Workaround 'identical expr on both sides of bitwise op' warning +* Workaround Linux NTPL lock elision bug +* Workaround false warning about unreachable code path +* Workaround invalid '_end' symbol on Android clang 3.5+ +Also, includes 7.2g changes + + +== [7.4.2] 2014-06-03 == + +* Add config option to use STGRTMIN-based signals for thread suspend/resume +* Allow parallel mark to be enabled on powerpc-linux systems +* Check for Fujitsu compiler in builtin_unwind logic (enable FX10/K-Computer) +* Fix 'Array subscript is above array bounds' GCC warning in GC_new_kind/proc +* Fix 'attribute declaration must precede definition' warning (clang-3.1) +* Fix (enable) Cygwin-64 build +* Fix GC_finalized_malloc failure on disclaim_test +* Fix GC_sig_suspend initialization when non-constant SIGRTMIN used +* Fix MS VC redefinition warning for functions declared with GC_ATTR_MALLOC +* Fix TEXT() usage for concatenated strings in GC_CreateLogFile (Win32) +* Fix data roots registration for Android/x86 and NDK ARM 'gold' linker +* Fix find stackbottom on BlueGene P/Q systems +* Fix machdep .lo files path in configure (SPARC, IA-64) +* Fix ok_init assignment (missing cast) in GC_new_kind_inner +* Fix typos in names in AUTHORS and ChangeLog files +* Remove barrett_diagram file duplicated by tree.html +* Remove non-existing DISCARD_WORDS from GC data structure ASCII diagram +* Restore contribution information for ancient releases in ChangeLog +Also, includes 7.2f changes + + +== [7.4.0] 2013-11-17 == + +* Add 'bytes reclaimed' counters to public GC_prof_stats_s +* Add AArch64 (64-bit ARM) target support +* Add GC_LONG_REFS_NOT_NEEDED ifdefs to exclude long link functionality +* Add GC_get_prof_stats[_unsafe]() to GC public API +* Add GC_push_all/conditional() to GC public API +* Add assertion on number_of_objs to GC_extend_size_map +* Add assertion to GC_enable() ensuring no counter underflow +* Add assertion to LOCK definition that lock is not already held +* Add assertion to LONG_MULT and remove useless assert in PUSH_CONTENTS_HDR +* Add double-lock assertion to GC_acquire_mark_lock +* Add manual POSIX fork handling support (Android) +* Add note about 'pkg-config' solving problem with autoconf 2.68 or older +* Add public GC_set/get_abort_func to replace default GC_on_abort +* Add public GC_start_mark_threads() to allow parallel marker in fork child +* Add public setter and getter for GC_push_other_roots +* Add support of Android logger +* Add tests for GC_register/move/unregister_long_link +* Add thread suspend/resume signals public setters (POSIX threads) +* Added long weakref support +* Adjust GC_dont_expand/gc/precollect and GC_print_stats type to match gc.h +* Adjust README.md title and references to doc .html files in it +* Adjust build scripts to enable additional test library in staticrootstest +* Adjust logged messages in start_mark_threads and GC_thr_init +* Adjust printf format specifiers in GC_print_trace +* Allow not to rely on __data_start value (Linux) +* Allow pthread_kill error code logging in GC_suspend/resume (debugging) +* Allow to compile GC_inner_start_routine aside from extra/gc.c +* Allow to omit libc atexit() call +* Avoid LOCK/UNLOCK hard-coding in gc_locks.h for PS3 target +* Better document GC_warn_proc in gc.h +* Call GC_on_abort (with NULL argument) on exit(1) +* Call GC_stats/verbose_log_printf instead of GC_log_printf if print_stats +* Change policy regarding version numbers ("micro" part instead of "alpha") +* Changed C99-style designated init of GC_dl_hashtbl struct to use C89-style +* Check GC_base result in GC_print_all_smashed_proc +* Check that SIG_SUSPEND and SIG_THR_RESTART are different (Pthreads) +* Check traceable_allocator.allocate result before dereference in test_cpp +* Code refactoring of GC_x_printf (move shared code to macro) +* Convert readme to markdown +* Default to use libc_stack_end in single-threaded GC on glibc targets +* Define GC_VSNPRINTF internal macro in misc.c (code refactoring) +* Define functions in darwin_semaphore.h as inline instead of static +* Define old_bus_handler static variable only if used (Unix) +* Detect dladdr() presence by configure +* Disable find-leak GC_gcollect on GC abnormal EXIT +* Do not define _setjmp/_longjmp macros in mach_dep.c +* Do not duplicate android_log_write output to GC log file (Android) +* Do not include sigcontext.h if NO_SIGCONTEXT_H (Linux) +* Do not set GC_lock_holder by call_with_alloc_lock if assertions disabled +* Do not use pthread_getattr_np if NO_PTHREAD_GETATTR_NP specified +* Elaborate comment on dependencies in autogen.sh +* Eliminate 'cast from int to pointer' warning in GC_exclude_static_roots +* Eliminate 'missing exception specification' warning in gc_cpp.cc (Clang) +* Eliminate 'uninitialized variable use' warning in test_printf (cord) +* Eliminate 'unused result' compiler warning in main() of test_cpp +* Eliminate 'unused value' compiler warning in GC_stop_world (Pthreads) +* Eliminate 'unused variable' compiler warning in start_mark_threads (HP/UX) +* Eliminate Clang warning for GC_pthread_exit attribute +* Eliminate GCC warning about uninitialized 'hhdr' in GC_allochblk_nth +* Eliminate GCC warning in GC_get_main_stack_base (OpenBSD) +* Eliminate GCC warnings in setjmp_t.c, test_cpp and cord 'de' app +* Eliminate GC_first_nonempty atomic value reload in GC_mark_local assertion +* Eliminate SIGBUS-related dead code in GC_write_fault_handler (Linux) +* Eliminate warning and simplify expression in GC_init_explicit_typing +* Enable 'force GC at every GC_malloc' debug-related functionality +* Enable on-demand debug logging in GC_FindTopOfStack (Darwin) +* Enable prefetch operations by default (GCC 3.0+) +* Enable staticrootstest for the case of GC shared library build +* Enable thread-local allocation support for Clang on Cygwin +* Explicitly specify that Darwin, Linux and Solaris platforms have dladdr +* Fix ABORT definition for mingw32ce (WinCE) +* Fix AM_CONFIG_HEADER in configure for autoconf-2.69-1 +* Fix GC_CreateThread and GC_beginthreadex definition for Cygwin +* Fix GC_INIT_CONF_ROOTS in gc.h for Android +* Fix GC_INLINE definition to comply with ISO C90 standard (GCC) +* Fix GC_remove_all_threads_but_me for Android (fork support) +* Fix debug_register_displacement calls from GC_debug_generic_malloc_inner +* Fix dyn_load.c compilation for Android 4.3 +* Fix make disclaim_test to link with new GNU ld linking rules +* Improve GC error printing atomicity in GC_debug_X and GC_print_obj +* Improve GC output atomicity in GC_print_obj, GC_print_all_errors +* Improve debug-only messages of add/remove_roots and init_linux_data_start +* Improve fork test logging in gctest +* Improve logged messages about heap size and usage +* Improve logging for Android differentiating messages by log level +* Improve staticrootstest (add global data to library, add lib w/o GC_INIT) +* Improve staticrootstest checks (tests) +* Include "config.h" instead of "private/config.h" on HAVE_CONFIG_H +* Include proper header file in 'tools' for configuration macros +* Include pthread_np.h from pthread_stop_world.c on OpenBSD +* Log error messages to stderr instead of stdout in tests +* Make GC_generic_malloc_ignore_off_page() public +* Make GC_mark_lock_holder variable static +* Make GC_print_trace always thread-safe and remove 'lock' argument +* Mark GC_started_thread_while_stopped() as GC_INNER +* Minimize code duplication in GC_mark_and_push +* Move 'include setjmp.h' from mach_dep.c to gc_priv.h +* Move GC_OPENBSD_UTHREADS definition to private/gcconfig.h (OpenBSD) +* Move GC_get_suspend/thr_restart_signal to misc.c for NaCl and OpenBSD +* Move LOCK/UNLOCK from GC_unregister_disappearing_link_inner outer +* Port BDWGC to Android/x86 +* Postpone the suspend signal in GC_dirty_init only if used to stop world +* Prepend '#' symbol to GC number in logged messages +* Prevent POSIX fork if mprotect_thread is started (Darwin) +* Prevent abort on GC_err/warn_printf write failure +* Prevent misleading AC_MSG_ERROR/AS_IF errors reported in configure.ac +* Put gc_cpp symbols into 'boehmgc' namespace if GC_NAMESPACE defined +* Recognize GC_DONT_GC macro in gc.h (causes GC_INIT to turn off GC) +* Recognize GC_SIG_SUSPEND and GC_SIG_THR_RESTART tuning macros in gc.h +* Redirect WRITE to __android_log_write if GC_ANDROID_LOG (Android) +* Refine comment of GC_is_heap_ptr and GC_thread_is_registered in gc.h +* Register dynamic libraries via dl_iterate_phdr on Android and OpenBSD +* Remove DebugBreak on WriteFile failure (Win32) +* Remove GC_BUILD definition from build scripts +* Remove abort on open log failure from GC_write (Win32) +* Remove configure.ac outdated revision number +* Remove nested EXPECT in GC_core_finalized_malloc +* Remove nested always-false ifdef for HPUX and FREEBSD +* Remove redundant GC_err_printf before abort +* Remove unused UTHREAD_SP_OFFSET macro (OpenBSD) +* Rename subthread_create to subthreadcreate_test (Makefile) +* Replace GC_COND_LOG_PRINTF calls with WARN for allocation failure messages +* Replace GC_log/err_printf() followed by ABORT with ABORT_ARGn() +* Replace GC_stats_log_printf with GC_DBG/INFOLOG_PRINTF +* Replace SIG_SUSPEND/THR_RESTART macros to variables in pthread_stop_world +* Replace Win32 GC_delete_gc_thread with GC_delete_gc_thread_no_free +* Replace conditional GC_log_printf calls with GC_COND/VERBOSE_LOG_PRINTF +* Replace sprintf with defensive snprintf +* Replace var-args GC_noop with GC_noop6 (to eliminate Clang warning) +* Simplify LOCK/UNLOCK macro definition for static code analysis tools +* Specify GC_malloc result is unused in some tests +* Specify GC_pthread_join result is unused in threadkey_test +* Specify LT_INIT in configure.ac +* Start of port to QNX +* Support rthreads introduced in OpenBSD 5.2+ +* Suppress 'GC_dont_gc deprecated' warning in gc.h if GC_DONT_GC +* Tag GC malloc routines with alloc_size attribute for Clang 3.2+ +* Test NO_WRAP_MARK_SOME macro to suppress WRAP_MARK_SOME-specific code +* Turn off GC_LOOP_ON_ABORT functionality if GC compiled with NO_DEBUGGING +* Turn on world-stop delay logging at debug level by default for Android +* Use EXPECT in GC_COND/VERBOSE_LOG_PRINTF +* Use GC_log_printf for logging instead of GC_[err_]printf +* Use compiler TLS for Android NDK gcc/arm +* Use memcpy (BCOPY) instead of strcpy (to suppress GCC warning) +* Use pthread API to operate thread-local data on Linux if no compiler TLS +* Workaround 'ELF_DATA/EM_ALPHA redefined' warning in Android linker.h +* Workaround 'unresolved __tls_get_addr' error for Android NDK Clang +Also, includes 7.2e, 7.2d, 7.2c, 7.2b changes + + +== [7.3alpha2] 2012-05-11 == + +* Add 'const' qualifier to pointer argument of some API functions +* Add GC_UNDERSCORE_STDCALL, UNICODE macro templates to configure (Win32) +* Add GC_get_thr_restart_signal, GC_thread_is_registered to GC API +* Add GC_is_heap_ptr, GC_move_disappearing_link to GC API +* Add SHORT_DBG_HDRS macro template to configure +* Add Symbian port to mainline (porting done by Djamel Magri) +* Add TODO file +* Add assertion ensuring proper alignment of 'pushed' GC symbols +* Add assertion in GC_getspecific on qtid +* Add assertion to GC_incremental_protection_needs, refine documentation +* Add assertion to check GC_large_free_bytes by GC_finish_collection +* Add configure option to compile all library .c files into single gc.o +* Add cordtest to make check +* Add disclaim callbacks for efficient finalization (ENABLE_DISCLAIM) +* Add finalization.html to 'doc' folder +* Add javaxfc.h to the installation set of GC header files (configure) +* Add on-heap-resize event notification to API +* Adjust GC_log_printf format specifiers (regarding signed/unsigned long) +* Adjust GC_requested_heapsize on GC_init if GC_INITIAL_HEAP_SIZE given +* Allow GC_exclude_static_roots() region start to be unaligned +* Allow Win32 DllMain chaining on the client side +* Allow to exclude finalization support by GC_NO_FINALIZATION macro +* Allow to get memory via Win32 VirtualAlloc (USE_WINALLOC) on Cygwin +* Avoid unnecessary GC_find_limit invocation if GC_no_dls +* Avoid use of deprecated GC_dont_gc and GC_stackbottom in gctest +* Cast pointers to word (instead of unsigned long) in specific.h +* Changed the order in autogen.sh so ltmain exists in time for automake +* Declare privately and use handy GC_base_C() for constant object pointers +* Define GC_DLL if DLL_EXPORT at GC build (for Cygwin/MinGW) +* Define GC_READ_ENV_FILE in configure for WinCE unless gc-debug is off +* Do not compile backgraph.c unless configure '--enable-gc-debug' +* Do not compile pthread_stop_world.c for Cygwin/Darwin (configure) +* Do not install ancient new_gc_alloc.h broken for modern STL (configure) +* Enable GC_MIN_MARKERS to set minimal number of pthread-based markers +* Enable PARALLEL_MARK and THREAD_LOCAL_ALLOC for FreeBSD in configure +* Enable parallel mark by default in configure (Darwin/Linux/Solaris/Win32) +* Export GC_is_marked, GC_clear/set_mark_bit (for mark-bit manipulation) +* Extend thread-related debug messages +* Fix 'configure --enable-cplusplus' for Cygwin/MinGW +* Fix DATASTART (and other minor improvements) for NaCl target +* Fix GC_setspecific to prevent garbage collection inside +* Fix compiler warning in cordtest +* Fix minor warnings reported by GCC with '-pedantic' option +* Fix static data roots registration on Android (if GC is shared) +* Implement GC_get_stack_base for Darwin for single-threaded mode +* Improve GC_allochblk algorithm of block splitting when unmapping enabled +* Improve GC_collect_or_expand algorithm for many finalizers registered case +* In tests, print a message in case a test is a no-op +* Instruct configure to hide internal libgc.so symbols if supported by GCC +* Log amount of unmapped memory (if enabled) on marking-for-collection +* Make __data_start a weak symbol to allow loading modules on mips +* Move "cord" library tests to "cord/tests" folder +* Move asm machine-dependent files to "src" folder +* Move build tools sources to "tools" folder +* Move cord_pos.h to public headers folder +* Open log file in APPEND mode on Win32 (similar that on Unix/Cygwin) +* Optimize some functions by moving pthread_self calls out of LOCK section +* Place only major per-release changes description to ChangeLog (this file) +* Prevent compiler warnings in GC_FindTopOfStack and GC_ports (Darwin) +* Recognize GC_LOG_TO_FILE_ALWAYS macro to log to 'gc.log' by default +* Remove all auto-generated files from the repo +* Remove binary icon file for de_win +* Remove cordtest from "cord" library +* Remove duplicate MacOS_Test_config.h file +* Remove gc_amiga_redirects.h (included internally) from public headers +* Remove obsolete Makefile.DLL (superseded by Cygwin/MinGW configure) +* Remove obsolete unused asm files for ALPHA, HPUX, SGI, RS6000, ULTRIX +* Remove unsupported MMAP_STACKS (specific to Solaris threads) +* Remove unused ancient SILENT, __STDC__, NO_SIGNALS macros +* Replace ARGSUSED comment-based annotation with GCC 'unused' attribute +* Replace GC_ms_entry declaration with opaque definition for public API +* Replace long GC_markers global variable with int GC_markers_m1 +* Replace pointer relational comparisons with non-pointer ones +* Replace printf PRIxMAX specifier with '%p' for thread id debug output +* Require autoconf 2.61 instead of v2.64 +* Simplify autogen.sh (use autoreconf) +* Split GC_abort with GC_on_abort and abort() invoked from ABORT +* Support GC_ATTR_MALLOC for MS VisualStudio +* Tag auxiliary malloc-like API functions with 'malloc' attribute +* Tag deprecated variables in GC API +* Tag must-be-non-null arguments of GC API functions +* Turn on "extra" GCC warnings +* Turn on unused-parameter checking for GCC +* Update AUTHORS file +* Use EXPECT for checking various 'initialized' boolean variables +* Use USE_COMPILER_TLS on Cygwin +* Use pthread_key for thread-local storage on FreeBSD +* Use union of AO_t and word to favor strict-aliasing compiler optimization +Also, includes 7.2 changes + + +== [7.2j] 2018-01-21 == + +* Fix GC allocation mutex in child after a fork +* Fix last_reclaimed..gc_no interval comparison to threshold in unmap_old +* Fix libgc version which was changed in linkage breaking way +* Fix missing EOLn output in threadlibs tool + + +== [7.2i] 2017-12-21 == + +* Avoid data race in finalized_count (gctest) +* Fix assertion violation about disabled cancel in try_to_collect_inner +* Fix data race in a list referenced by A.aa (gctest) +* Fix data race in do_local_mark when comparing active_count to helper_count +* Fix data race in GC_init_explicit_typing +* Fix data race in last_stop_count access (suspend_handler_inner) +* Fix data race in mark_thread when updating mark_no +* Fix data race when getting object size in explicitly-typed allocators +* Fix lack of barriers to synchronize memory for suspend_handler +* Fix typos in cdescr.html, extend_size_map and ews4800 doc, README.sgi +* Prevent 'Unexpected heap growth' in single-threaded gctest (Linux/x64) + + +== [7.2h] 2017-10-12 == + +* Add gctest as a test (CMake) +* Change no-argument functions declaration style to ANSI C (extra files) +* Do not allow SHORT_DBG_HDRS if KEEP_BACK_PTRS or MAKE_BACK_GRAPH +* Ensure oom_fn callback executed on out-of-memory in calloc +* Fix '~' operator application to unsigned values shorter than word +* Fix 'context local variable might be clobbered by setjmp' compiler warning +* Fix 'doc' files installation folder +* Fix 'shift count >= width of type' compiler warning in GC_SQRT_SIZE_MAX +* Fix ALL_INTERIOR_POINTERS name in comments and documentation +* Fix AO_SRC_DIR target name in NT_*_MAKEFILE +* Fix assertion in GC_mark_from for non-heap regions +* Fix assertion in GC_steal_mark_stack for non-heap regions +* Fix assertion violation in GC_repeat_read if --enable-redirect-malloc +* Fix assertion violation in GC_wait_builder called from start_mark_threads +* Fix assertion violation in mark_local checking GC_mark_stack_top +* Fix assertion violation in return_single_freelist in child process +* Fix bm_huge initialization for 64-bit targets (gctest) +* Fix broken external links in documentation +* Fix bytes count passed to add_to_our_memory in backgraph new_back_edges +* Fix calloc_explicitly_typed in case of lb*n overflow +* Fix CMake warning about CMP0054 by unquoting instances of HOST +* Fix conditional expression in pos_fetch, next non-macro definitions (cord) +* Fix configure --disable-munmap handling +* Fix CORD_substr_closure for the case when CORD_from_fn returns C string +* Fix crash in FirstDLOpenedLinkMap if app linked statically (Alpine Linux) +* Fix double lock in pthread_detach (Cygwin, winpthreads) +* Fix double multiplication of lb by n in calloc_explicitly_typed +* Fix enable_parallel_mark condition in CMake script +* Fix external libatomic_ops pkg-config-based detection +* Fix gc_allocator.h file name in new_gc_alloc.h comment +* Fix gc_backptr.h, gc_mark.h, GC_DS_TAGS names in documentation +* Fix gc_cleanup destructor for non-heap objects (gc_cpp) +* Fix GC_collect_or_expand to prevent allocation size value wrap-around +* Fix GC_incremental declaration/definition type mismatch +* Fix GC_mark_stack_top assertion violation properly in mark_local +* Fix GC_remove_specific invocation from remove_all_threads_but_me +* Fix GC_requested_heapsize increment in GC_init +* Fix GC_setspecific to prevent garbage collection inside +* Fix GC_SIZE_MAX definition (Linux/musl-gcc) +* Fix GCJ support in CMake build script +* Fix gctest crash if configure --enable-handle-fork on Darwin +* Fix get_maps on proc maps file asynchronous growth +* Fix hb_n_marks underflow in clear_fl_marks if MARK_BIT_PER_OBJ +* Fix header filename in gcconfig.h comment +* Fix infinite mark_some calls after memory mapping disappeared (Glibc) +* Fix integer shift undefined behavior in GC_init_explicit_typing +* Fix leak_test crash in print_callers if free() is redirected +* Fix Makefile.direct recursive invocation +* Fix malloc routines to prevent size value wrap-around (fix CVE-2016-9427) +* Fix missing win32_threads.c compilation for Cygwin (CMake) +* Fix MS VC warning about compiling unused checksums and thread_local_alloc +* Fix name typos in GC_FAST_MALLOC_GRANS comment +* Fix null dereference in reclaim_block if DONT_ADD_BYTE_AT_END +* Fix OSF1 host pattern in CMakeLists.txt +* Fix PCR-Makefile by removing compilation of a missing file +* Fix potential data race in GC_SysVGetDataStart (SPARC) +* Fix potential integer overflow in GC_find_limit_* functions +* Fix printf arguments type in print_callers +* Fix pthread_detach for threads not yet registered (Cygwin, winpthreads) +* Fix pthread_join to avoid thread removal on failure (Cygwin, winpthreads) +* Fix pthread_join when thread is registered in thread key destructor +* Fix push_complex_descriptor to avoid unlimited global mark stack growth +* Fix removal of dead threads in a child process +* Fix SIGSEGV in GC_is_marked when gc_cleanup is used in leak-finding mode +* Fix SIGSEGV in mark_from called from do_local_mark if WRAP_MARK_SOME +* Fix Solaris/sparc detection in case of strict C compliance is enforced +* Fix STACKBOTTOM for Solaris 11/x86 +* Fix storage class of local variable in register_dynamic_libraries (Irix) +* Fix tools/setjmp_t hang (OS X) +* Fix typed_test to prevent fails in malloc_explicitly_typed (64-bit) +* Fix undefined HEAP_START in register_dynamic_libraries +* Fix USE_CUSTOM_SPECIFIC mode (if manually enabled) for Win32 +* Fix USE_GET_STACKBASE_FOR_MAIN definition in gcconfig.h +* Fix various typos in comments, documentation and printed messages +* Handle load_segs overflow in register_dynlib_callback gracefully +* Prevent misleading AC_MSG_ERROR/AS_IF errors reported in configure.ac +* Replace (fix) 'objs' acronym in comments with 'objects' word +* Revert "Skip GC_DS_PER_OBJECT objs with negative descriptor in GC_mark_from" +* Update documentation about bugs reporting and new releases notification +* Update Download information in GC overview document +* Update shared libraries version info (v7.2) +* Workaround a bug in winpthreads causing parallel marks deadlock (MinGW) +* Workaround missing getcontext() in Docker osrf/ubuntu_32bit + + +== [7.2g] 2016-05-23 == + +* Fix 'illegal option -xassembler-with-cpp' error (Oracle SunCC) +* Fix 'implicit declaration of function' compiler warnings in cord/de +* Fix CFLAGS in configure regarding -O flag passing to SunCC compiler +* Fix FirstDLOpenedLinkMap for case libgc not 1st dynamically linked (NetBSD) +* Fix GC initialization in cord de_win for Cygwin +* Fix GC_get_stack_base if called before GC_init (Win32) +* Fix OSX issue with pthread_attr_setstacksize failure +* Fix Unicode Win32 API calls in cord de_win +* Fix USE_COMPILER_TLS macro duplicate description in README +* Fix cord de_win WndProc prototype parameters for 64-bit (Win64) +* Fix file descriptor resource leak in GC_register_data_segments (OS/2) +* Fix filename printing in cordtest +* Fix missing cord_pos.h, ec.h among installed headers (Automake) +* Fix missing GC_get_stack_base for Amiga +* Fix missing msvc_dbg.h in dist_noinst_HEADERS (Automake) +* Fix mistyped ARM_THREAD_STATE macro (Darwin/arm) +* Fix null-pointer dereferences on out-of-memory in cord and tests +* Fix potential multiplication overflow in check_heap_stats (gctest) +* Fix race (and potential deadlock) at marker threads initialization +* Fix signedness of char values passed to isspace, iscntrl, isxdigit +* Fix typo (items numbering) in GC_finalize_all documentation +* Fix typos in ERROR_FL, GC_malloc_uncollectable comments +* Fix typos in gc_priv.h, in README for ews4800 +* Fix unresolved vsnprintf in misc.c and snprintf in cordtest (DJGPP, VC) +* Fix various spelling errors +* Fix vsprintf_args initialization/cleanup in CORD_vsprintf for EMX +* Regenerate configure files using official libtool release (v2.4.2) +* Remove documentation about obsolete GC_REDIRECT_TO_LOCAL +* Skip GC_DS_PER_OBJECT objects with negative descriptor in GC_mark_from +* windows-untested: Fix paths to msvc_dbg.c/h + + +== [7.2f] 2014-06-03 == + +* Fix 'Bad signal in suspend_handler' abort on FreeBSD-9.2 +* Fix 'source file in a subdirectory' Automake warnings +* Fix ABORT message in GC_restart_handler +* Fix ADD_DEFINITION in CMakeLists.txt for kFreeBSD +* Fix CMakeLists.txt: do not override CMAKE_OSX_ARCHITECTURES +* Fix GC_alloc_large by bumping GC_collect_at_heapsize in GC_add_to_heap +* Fix GC_scratch_last_end_ptr update on GC_scratch_alloc failure +* Fix GET_MEM argument rounding in GC_scratch_alloc and similar +* Fix PARALLEL_MARK for Windows 7+ +* Fix build (broken by fenv.h inclusion) on Linux/x86_64 under uClibc +* Fix crash when using GC_malloc_many() as first allocation call +* Fix mark stack excessive growth during parallel mark +* Fix or remove broken URLs in documentation +* Fix out-of-memory case in new_back_edges, push_in_progress (backgraph) +* Fix typo in GC_collect_or_expand comment +* Fix typos in GC overview file, gc_config_macros.h, gc_cpp.h, README.changes +* Regenerate configure files by automake 1.14.1, libtool 2.4.2.418 +* Update emails/links due to project site and ML transition + + +== [7.2e] 2013-11-10 == + +* Add weak attribute to avoid __data_start undefined messages (s390x) +* Add weak stubs for pthread_cancel API +* Adjust 'pthread_[un]register_cancel undefined ref' workaround (Pthreads) +* Append _test suffix to 'initsecondarythread' binary file names +* Enable PARALLEL_MARK and THREAD_LOCAL_ALLOC for FreeBSD in configure +* Fix 'stack section' pointer passed to push_all_stack_sections (Pthreads) +* Fix GC_CreateThread 'dwStackSize' argument type for Win64 +* Fix GC_PTHREAD_PTRVAL definition for GC_PTHREADS_PARAMARK (Win32) +* Fix GC_clear_stack by declaring 'dummy' local array as volatile +* Fix GC_get_stack_base assembly code (Cygwin/Clang) +* Fix GC_malloc_explicitly_typed_ignore_off_page for large allocations +* Fix GC_marker_Id elements initialization (WinCE) +* Fix GC_print_trace missing unlock +* Fix GC_unix_mmap_get_mem for open of /dev/zero failure +* Fix GC_win32_free_heap compilation error for Cygwin +* Fix GC_win32_free_heap to prevent memory leak if USE_GLOBAL_ALLOC +* Fix Win32 GC_write preventing potential infinite recursion at abort +* Fix assertion violation in GC_mark_from prefetch loop +* Fix collection of objects referenced only from GC_mark_stack_X variables +* Fix dwSize argument of VirtualFree call in detect_GetWriteWatch (Win32) +* Fix heap sections overflow for Win32/Cygwin with enabled parallel marker +* Fix min_bytes_allocd preventing potential infinite loop in GC_allocobj +* Fix missing tabs in SMakefile.amiga file +* Fix null-pointer dereference in CORD_substr_closure +* Fix old_segv/bus_act variables initialization for FreeBSD +* Fix potential double fclose in test_extras (cordtest) +* Fix pthread_attr_t resource leak in pthread_create +* Fix race in GC_print_all_errors regarding GC_leaked +* Fix sizeof in GC_push_thread_structures +* Fix stackbottom/stack_end assignment in GC_call_with_gc_active +* Fix tests makefile to link with new GNU ld linking rules +* Fix typos in comments and documentation +* Fix unportable '==' test operators in configure +* Fix vsprintf_args cleanup in CORD_vsprintf +* Merge FreeBSD New ports collection for boehm-gc v7.2d +* Replace GC_DBG_RA with GC_DBG_EXTRAS macro +* Replace deprecated [CXX]INCLUDES to AM_C[PP]FLAGS in configure.ac file +* Use __builtin_extract_return_addr in GC_RETURN_ADDR_PARENT (gcc/x86) + + +== [7.2d] 2012-08-09 == + +* Fix GC_call_with_stack_base to prevent its tail-call optimization +* Fix all address-of-dummy operations by using GC_approx_sp() instead +* Fix stop_info.stack_ptr assignment in GC_suspend_all for OpenBSD +* Fix test_cpp (ensure the collector recognizes pointers to interiors) +* Fix thread-related tests for pthreads-w32 +* test_cpp: Fix WinMain to prevent SEGV if zero arguments passed (MinGW) + + +== [7.2c] 2012-06-11 == + +* Fix CORD_cat_char_star to prevent SEGV in case of out-of-memory +* Fix GC_FirstDLOpenedLinkMap() for NetBSD 6 release +* Fix GC_scratch_alloc and GC_get_maps invocations to prevent SEGV +* Fix visibility of GC_clear/set_mark_bit (unhide symbols) +* Fix visibility of GC_push_all/conditional, GC_push_other_roots symbols + + +== [7.2b] 2012-05-23 == + +* Fix assertion in GC_malloc_[atomic_]uncollectable (THREADS case only) + + +== [7.2] 2012-05-11 == + +* Abort in GC_thr_init on pthread_atfork failure (POSIX threads) +* Add GC_WIN32_PTHREADS target in configure +* Add GC_is_disabled new function to GC API +* Add info that getcontext() resets FPE mask no longer on Linux/x86_64 +* Add public GC_set_handle_fork to control forked child handling support +* Add realloc_test.c test +* Add support for Hexagon target +* Add thread-safe GC_get_heap_usage_safe to GC API +* Change GC_check_fl_marks prototype and implementation +* Check pthread_create/join result in test +* Define GC_DLL (in configure) if building only dynamic libraries +* Define NO_DEBUGGING (in configure) if "--disable-gc-debug" is set +* Disable incremental mode on Darwin if fork handling requested +* Enable parallel marker in configure for Solaris +* Fix "comparison of signed and unsigned values" compiler warnings +* Fix 'volatile' keyword placement in GC_SysVGetDataStart +* Fix ALIGNMENT, CPP_WORDSZ, GC_GRANULE_BYTES/WORDS for x32 target +* Fix GC_READ_ENV_FILE code for Cygwin +* Fix GC_add_roots_inner for Mac OS X (align segment start) +* Fix GC_check_fl_marks regarding concurrent access +* Fix GC_finalizer_nested size to workaround alignment problem in Watcom +* Fix GC_find_limit_with_bound to always reset fault handler on return +* Fix GC_init static assertion for clang/x64 (Darwin) +* Fix GC_init[_lib_bounds] and GC_get_main_stack_base for malloc redirection +* Fix GC_push_all/selected boundaries check +* Fix GC_register_my_thread marking thread as detached (Cygwin/pthreads-w32) +* Fix GC_remove_all_threads_but_me to cleanup thread-specific data storage +* Fix GC_restart_handler to preserve errno if needed +* Fix GC_root_size update in GC_add_roots_inner (Win32) +* Fix GC_unregister_my_thread to ensure no ongoing incremental GC (Win32) +* Fix GC_with_callee_saves_pushed for clang (disable __builtin_unwind_init) +* Fix calloc, GC_generic_malloc to check for allocation size overflows +* Fix compiler warning in GC_dyld_image_add/remove (Darwin) +* Fix configure --enable-cplusplus make install +* Fix configure to disable GCC aliasing optimization unless forced to +* Fix duplicate definitions in gcconfig.h for NetBSD +* Fix fork() support on Cygwin and Darwin targets +* Fix gc.h compatibility regression regarding GC_PTR, GC_I_HIDE_POINTERS +* Fix gc_cpp.cc for Cygwin (remove duplicate function definition) +* Fix gcconfig.h to define USE_GET_STACKBASE_FOR_MAIN for Android +* Fix gcconfig.h to handle mips64-linux target +* Fix gctest (for Win32) to avoid GC_print_stats internal variable usage +* Fix mach_dep.c to include sys/ucontext.h on Mac OS X 10.6 +* Fix tests to check GC_malloc result for NULL (out-of-memory) +* Fix thread model in configure for MinGW ("win32" instead of "posix") +* Fix various warnings reported by LINT-like tools +* Fix visibility of some GC internal symbols used by GNU GCJ currently +* Port some thread tests to Win32 +* Refine API GC setters and getter comments regarding locking +* Refine GC_stackbottom description in gc.h +* Remove duplicate calls in GC_register_dynamic_libraries +* Remove locking in API GC_get_bytes_since_gc and friends +* Remove newly-added GC_get_heap_size/free_bytes_inner from API +* Remove some local variables that are unused +* Support multi-threading for RTEMS target +* Use global GC_noop_sink variable in GC_noop1 to suppress compiler warning +* Use pkg-config to pick up libatomic_ops, etc +* Workaround some Linux/arm kernels bug to get correct GC_nprocs value + + +== [7.2alpha6] 2011-06-14 == + +* configure_atomic_ops.sh: Remove. +* Makefile.direct (dist gc.tar): Remove configure_atomic_ops.sh. +* Makefile.am (EXTRA_DIST): Add autogen.sh. + +* NT_STATIC_THREADS_MAKEFILE (.cpp.obj): Remove duplicate .cpp +filename passed. +* NT_X64_THREADS_MAKEFILE (.cpp.obj): Use lowercase file +extension. +* NT_X64_STATIC_THREADS_MAKEFILE (.cpp.obj): Likewise. +* NT_MAKEFILE (.cpp.obj): Likewise. + +* alloc.c (GC_add_current_malloc_heap, GC_build_back_graph, +GC_traverse_back_graph): Move prototype to gc_priv.h. +* checksums.c (GC_page_was_ever_dirty): Likewise. +* dbg_mlc.c (GC_default_print_heap_obj_proc): Likewise. +* dyn_load.c (GC_parse_map_entry, GC_get_maps, +GC_segment_is_thread_stack, GC_roots_present, GC_is_heap_base, +GC_get_next_stack): Likewise. +* finalize.c (GC_reset_finalizer_nested, +GC_check_finalizer_nested): Likewise. +* gcj_mlc.c (GC_start_debugging, GC_store_debug_info): Likewise. +* malloc.c (GC_extend_size_map, GC_text_mapping): Likewise. +* mark_rts.c (GC_mark_thread_local_free_lists): Likewise. +* misc.c (GC_register_main_static_data, GC_init_win32, +GC_setpagesize, GC_init_linux_data_start, +GC_set_and_save_fault_handler, GC_init_dyld, GC_init_netbsd_elf, +GC_initialize_offsets, GC_bl_init, GC_do_blocking_inner, +GC_bl_init_no_interiors): Likewise. +* os_dep.c (GC_greatest_stack_base_below, GC_push_all_stacks): +Likewise. +* reclaim.c (GC_check_leaked): Likewise. +* win32_threads.c (GC_gww_dirty_init): Likewise. +* darwin_stop_world.c (GC_is_mach_marker, GC_mprotect_stop, +GC_mprotect_resume): Move prototype to darwin_stop_world.h. +* pthread_support.c (GC_FindTopOfStack): Likewise. +* dyn_load.c (GC_cond_add_roots): Merge adjacent definitions. +* mark.c (GC_page_was_ever_dirty): Remove (as already declared). +* mark_rts.c (GC_roots_present): Change return type to void +pointer (to match the prototype); return NULL instead of FALSE. +* mark_rts.c (GC_add_roots_inner): Cast GC_roots_present() result. +* os_dep.c (NEED_PROC_MAPS): Move definition to gcconfig.h. +* os_dep.c (GC_write_fault_handler): Make STATIC. +* os_dep.c (GC_set_write_fault_handler): New function (only if +GC_WIN32_THREADS). +* pthread_start.c (GC_start_rtn_prepare_thread, +GC_thread_exit_proc): Move prototype to pthread_support.h. +* pthread_support.c (GC_nacl_initialize_gc_thread, +GC_nacl_shutdown_gc_thread, GC_unblock_gc_signals): +Likewise. +* pthread_support.c (GC_stop_init): Move prototype to +pthread_stop_world.h. +* win32_threads.c (GC_write_fault_handler): Remove prototype. +* win32_threads.c (GC_register_my_thread_inner): Call +GC_set_write_fault_handler instead of SetUnhandledExceptionFilter +(only if MPROTECT_VDB). +* doc/README.win32: Add information about DMC. +* include/private/gc_priv.h (GC_set_write_fault_handler): New +prototype (only if GC_WIN32_THREADS and MPROTECT_VDB). + +* misc.c (vsnprintf): Redirect to vsprintf() if NO_VSNPRINTF. + +* win32_threads.c (GC_unregister_my_thread): Use KNOWN_FINISHED() +instead of FINISHED macro. +* tests/test.c (check_heap_stats): Round up max_heap_sz value for +Win32 (same as for USE_MMAP). + +* tests/test.c (check_heap_stats): Adjust printf format specifier +for max_heap_sz; cast max_heap_sz accordingly. + +* doc/README.solaris2: Add note. + +* configure.ac (SOLARIS25_PROC_VDB_BUG_FIXED): Don't define for +Solaris/x86 2.10+. + +* tests/threadkey_test.c (SKIP_THREADKEY_TEST): Skip the test if +defined; explicitly define for some targets. + +* mark.c (GC_dirty): Add prototype (only if MANUAL_VDB). +* stubborn.c (GC_dirty): Likewise. +* include/private/gcconfig.h (GWW_VDB, MPROTECT_VDB, PCR_VDB, +PROC_VDB): Undefine if MANUAL_VDB. +* include/private/gcconfig.h (DEFAULT_VDB): Don't define if +MANUAL_VDB. +* os_dep.c (async_set_pht_entry_from_index): Define for +MANUAL_VDB. +* os_dep.c (GC_read_dirty): Set GC_dirty_maintained only if +success; if ioctl() failed then just print warning instead of +aborting. + +* include/private/gc_priv.h (GC_ASSERT): Use "%d" (instead of %ld) +for line number printing. + +* os_dep.c (GC_read_dirty): Add debug logging if DEBUG_DIRTY_BITS +(for PROC_VDB only); print errors via GC_err_printf; rename "ps" +and "np" local variables to npages and pagesize, respectively; +remove "current_addr" local variable. + +* os_dep.c (GC_get_main_stack_base): Convert to GC_get_stack_base +for BeOS and OS/2; define HAVE_GET_STACK_BASE. +* os_dep.c (GET_MAIN_STACKBASE_SPECIAL): Define when a specific +GC_get_main_stack_base implementation is defined. +* os_dep.c (GC_get_main_stack_base): Define that based on +GC_get_stack_base() in a single place (only if +GET_MAIN_STACKBASE_SPECIAL is unset); check GC_get_stack_base() +result. + +* mark.c (GC_push_selected): Remove "push_fn" argument (use +GC_push_all directly); update the documentation. +* mark.c (GC_push_conditional): Simplify the code (for better +readability). + +* mark.c (alloc_mark_stack): Use FALSE/TRUE (instead of 0/1) for +boolean local variables. +* doc/README.macros (GC_PREFER_MPROTECT_VDB): Update. +* os_dep.c (GC_page_was_dirty, GC_page_was_ever_dirty, +GC_remove_protection): Define for GWW_VDB and PROC_VDB in a single +place. +* os_dep.c (GC_page_was_dirty, GC_page_was_ever_dirty): Compute +PHT_HASH(h) only once (store result to a local variable). + +* doc/README.solaris2: Update. + +* include/private/gcconfig.h (end, InitStackBottom): Declare +extern variable for RTEMS. +* include/private/gcconfig.h (DATASTART, DATAEND, STACKBOTTOM): +Update (for RTEMS). +* include/private/gcconfig.h (DATAEND): Fix a typo in the macro +name (for RTEMS). +* tests/test.c (CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER): +Replace with CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER (for RTEMS). + +* include/private/gcconfig.h (MPROTECT_VDB): Enable for Solaris in +single-threaded environment. + +* include/private/gcconfig.h (MPROTECT_VDB): Undefine if PROC_VDB. +* tests/test.c (NUMBER_ROUND_UP): New macro. +* tests/test.c (check_heap_stats): Round up total expected heap +size to the nearest 4 MiB bound. +* tests/test.c (check_heap_stats): Print the current and expected +heap sizes in case of failure. + +* checksums.c (GC_check_blocks, GC_check_dirty): Do log printing +only if GC_print_stats; print errors using GC_err_printf. +* checksums.c (GC_check_blocks): Join adjacent printf() calls into +a single one. + +* pthread_support.c (pthread_join): Add assertion (check thread is +finished). +* pthread_support.c (GC_register_my_thread): Don't detach the +thread if invoked from the thread destructor. +* win32_threads.c (GC_register_my_thread): Likewise. +* win32_threads.c (GC_unregister_my_thread): Don't delete the +thread (just set FINISHED) if the thread is not detached (only if +GC_PTHREADS); add assertion (check the thread is not finished). +* tests/threadkey_test.c (main): Join some created threads. + +* pthread_support.c (GC_delete_gc_thread): Rename "gc_id" local +variable to "t". +* win32_threads.c (GC_delete_gc_thread): Likewise. +* pthread_support.c (pthread_join, pthread_detach, +pthread_cancel): Rename "thread_gc_id" local variable to "t". +* win32_threads.c (GC_pthread_detach): Likewise. +* win32_threads.c (GC_delete_gc_thread): Remove "gc_nvid" local +variable. +* win32_threads.c (GC_pthread_join): Rename "joinee" local +variable to "t". + +* pthread_stop_world.c (pthread_sigmask): Undefine even if not +DEBUG_THREADS. +* pthread_stop_world.c (GC_unblock_gc_signals): New function (only +if GC_EXPLICIT_SIGNALS_UNBLOCK). +* pthread_support.c (GC_unblock_gc_signals): New prototype. +* pthread_support.c (GC_register_my_thread_inner, +GC_register_my_thread): Call GC_unblock_gc_signals (only if +GC_EXPLICIT_SIGNALS_UNBLOCK); add comment. +* include/private/gcconfig.h (GC_EXPLICIT_SIGNALS_UNBLOCK): New +macro. + +* pthread_stop_world.c (GC_suspend_handler_inner): Remove "dummy", +"sig" local variables; rename my_thread local variable to "self". + +* tests/threadkey_test.c (LIMIT): Use smaller value (don't create +more than 30 in parallel by default). + +* tests/threadkey_test.c (key_once, main): Work around for Solaris +PTHREAD_ONCE_INIT. +* tests/threadkey_test.c (LIMIT): Use smaller value for Solaris. + +* dyn_load.c (GC_FirstDLOpenedLinkMap): Remove unused "r" local +variable. +* pthread_support.c (GC_unregister_my_thread_inner): Revert back +GC_remove_specific invocation; add a comment. +* include/private/thread_local_alloc.h (GC_remove_specific): +Revert back. +* specific.c (slow_getspecific): Cast qtid to AO_t. +* include/private/specific.h (key_create, setspecific, +remove_specific): Remove "extern" keyword. +* include/private/specific.h (getspecific): Change type of "qtid" +local variable to unsigned long. + +* pthread_support.c (GC_check_tls): Fix "#endif" comment. +* include/gc.h (GC_REDIRECT_TO_LOCAL): Remove deprecated comment. +* include/private/thread_local_alloc.h (THREAD_LOCAL_ALLOC): +Remove redundant test of the macro. + +* backgraph.c (add_edge): Recognize DEBUG_PRINT_BIG_N_EDGES macro. +* os_dep.c (GC_set_and_save_fault_handler): Recognize +SIGACTION_FLAGS_NODEFER_HACK macro. +* pthread_support.c (mark_mutex): Recognize GLIBC_2_1_MUTEX_HACK +macro. +* pthread_support.c (GC_acquire_mark_lock): Remove commented out +code. +* include/private/gc_priv.h (SUNOS5SIGS): Don't include +sys/siginfo.h on Linux. +* include/private/gcconfig.h (FORCE_WRITE_PREFETCH): New macro +recognized, force PREFETCH_FOR_WRITE to be defined on x86. +* include/private/gcconfig.h (USE_HPUX_FIXED_STACKBOTTOM): New +macro recognized (for HP/UX). + +* os_dep.c (GC_gww_page_was_ever_dirty): Fix comment (for +GWW_VDB). +* os_dep.c (GC_dirty_init): Use memset() for GC_written_pages +resetting (for PROC_VDB). + +* tests/threadkey_test.c: New file. +* tests/tests.am (TESTS, check_PROGRAMS): Add 'threadkey_test'. +* tests/tests.am (threadkey_test_SOURCES, threadkey_test_LDADD): +New variable. + +* pthread_support.c (GC_unregister_my_thread_inner): Don't call +GC_remove_specific. +* include/private/thread_local_alloc.h (GC_remove_specific): +Remove (since it is empty for all targets). +* pthread_support.c (GC_record_stack_base): New inline function. +* win32_threads.c (GC_record_stack_base): Likewise. +* pthread_support.c (GC_register_my_thread_inner): Invoke +GC_record_stack_base. +* win32_threads.c (GC_register_my_thread_inner): Likewise. +* pthread_support.c (GC_register_my_thread): If thread is FINISHED +then call GC_record_stack_base, clear FINISHED, initialize +thread-local list and return success. +* win32_threads.c (GC_register_my_thread): Likewise. +* include/gc.h (GC_register_my_thread): Update documentation. +* include/private/thread_local_alloc.h (GC_thread_key): Likewise. + +* thread_local_alloc.c (GC_malloc, GC_malloc_atomic): Join +adjacent "#ifdef". +* thread_local_alloc.c (GC_malloc_atomic): Call +GC_core_malloc_atomic (instead of GC_core_malloc). + +* pthread_start.c (GC_start_rtn_prepare_thread): Change return +type to GC_thread. +* pthread_start.c (GC_inner_start_routine): Pass the current +thread descriptor to pthread_cleanup_push (same as in +win32_threads.c). +* pthread_stop_world.c (GC_push_all_stacks): Rename "me" local +variable to "self". +* win32_threads.c (GC_push_all_stacks): Likewise. +* pthread_stop_world.c (GC_suspend_all, GC_start_world): Rename +"my_thread" local variable to "self". +* pthread_support.c (GC_unregister_my_thread_inner): New static +function. +* pthread_support.c (GC_unregister_my_thread, +GC_thread_exit_proc): Use GC_unregister_my_thread_inner. +* win32_threads.c (GC_register_my_thread, GC_unregister_my_thread, +GC_do_blocking_inner): Rename "t" local variable to "thread_id". +* win32_threads.c (GC_wait_marker, GC_notify_all_marker): Rename +"id" local variable to "thread_id". + +* pthread_support.c (GC_unregister_my_thread): Call pthread_self +only once. +* win32_threads.c (GC_pthread_start_inner): Likewise. +* pthread_support.c (GC_unregister_my_thread): Add debug output. +* win32_threads.c (GC_unregister_my_thread): Likewise. +* pthread_support.c (GC_register_my_thread, +GC_start_rtn_prepare_thread): Rename "my_pthread" local variable +to "self". + +* include/gc.h (GC_HIDE_POINTER, GC_REVEAL_POINTER): Define +unconditionally (do not test GC_I_HIDE_POINTERS); update the +comment. +* include/gc.h (HIDE_POINTER, REVEAL_POINTER): Define as alias to +GC_HIDE/REVEAL_POINTER, respectively. +* include/private/gc_pmark.h (GC_I_HIDE_POINTERS): Do not define. +* include/private/gc_priv.h (GC_I_HIDE_POINTERS): Likewise. + +* include/gc.h (GC_register_my_thread): Refine the comment. + +* include/gc_inline.h (GC_MALLOC_WORDS, GC_CONS): Add missing +parentheses. +* include/gc_typed.h (GC_get_bit, GC_set_bit, +GC_CALLOC_EXPLICITLY_TYPED): Likewise. + +* include/private/gcconfig.h (NO_GETCONTEXT): Add missing ')'. + +* include/private/gcconfig.h (NO_GETCONTEXT): Do not use +getcontext(2) on m68k because it is not implemented there. + +* alloc.c (GC_clear_a_few_frames): Use BZERO(). +* mark_rts.c (GC_clear_roots, GC_rebuild_root_index): Likewise. +* reclaim.c (GC_start_reclaim): Likewise. +* blacklst.c (total_stack_black_listed): Remove "len" local +variable. +* dbg_mlc.c (GC_generate_random_valid_address): Replace "for" +statement with "do-while" one. +* dyn_load.c (GC_register_dynamic_libraries, +GC_register_dynlib_callback): Remove redundant parentheses. + +* cord/cordxtra.c (CORD_from_file_lazy_inner): Suppress +"unused result" compiler warning for fread(). + +* os_dep.c (GC_write_fault_handler): Break when in_allocd_block +is set to true. + +* dbg_mlc.c (GC_has_other_debug_info): Change return type to int; +return -1 if the object has (or had) debugging info but was +marked deallocated. +* include/private/dbg_mlc.h (GC_has_other_debug_info): Likewise. +* dbg_mlc.c (GC_has_other_debug_info): Update documentation; +remove "ohdr" local variable. +* dbg_mlc.c (GC_debug_free): Don't call GC_free if the object has +probably been deallocated. +* dbg_mlc.c (GC_debug_free): Don't actually free the object even +in the leak-finding mode if GC_findleak_delay_free. +* dbg_mlc.c (GC_check_leaked): New function (only unless +SHORT_DBG_HDRS). +* doc/README.environment (GC_FINDLEAK_DELAY_FREE): Document. +* doc/README.macros (GC_FINDLEAK_DELAY_FREE): Likewise. +* include/private/dbg_mlc.h (START_FLAG, END_FLAG): Use GC_WORD_C +on 64-bit architectures. +* include/private/dbg_mlc.h (NOT_MARKED): Remove redundant +parentheses. +* include/private/dbg_mlc.h (GC_HAS_DEBUG_INFO): Update (due to +GC_has_other_debug_info change). +* include/private/gc_priv.h (GC_findleak_delay_free): New global +variable declaration (unless SHORT_DBG_HDRS). +* misc.c (GC_findleak_delay_free): New global variable; recognize +GC_FINDLEAK_DELAY_FREE. +* misc.c (GC_init): Recognize GC_FINDLEAK_DELAY_FREE environment +variable (unless SHORT_DBG_HDRS). +* reclaim.c (GC_check_leaked): Declare (unless SHORT_DBG_HDRS). +* reclaim.c (GC_add_leaked): Don't add the object to leaked list +if marked as deallocated. + +* dbg_mlc.c (GC_has_other_debug_info): Fix punctuation in the +comment. +* dbg_mlc.c (GC_FREED_MEM_MARKER): New macro. +* dbg_mlc.c (GC_debug_free): Use GC_FREED_MEM_MARKER. +* dbg_mlc.c (GC_smashed): Refine documentation. +* mark.c (GC_push_selected): Change dirty_fn return type to +GC_bool. +* os_dep.c (GC_page_was_ever_dirty): Make GC_INNER. +* reclaim.c (GC_reclaim_small_nonempty_block): Remove "kind" +local variable. +* reclaim.c (GC_reclaim_block): Pass true constant to +GC_reclaim_small_nonempty_block (instead of report_if_found). +* doc/README.autoconf: Update; fix a typo. +* include/private/gcconfig.h (GC_WORD_C): New macro. + +* dbg_mlc.c (GC_store_debug_info_inner): Cast "linenum". +* dbg_mlc.c (GC_check_annotated_obj): Fix punctuation in the +comment. +* dbg_mlc.c (GC_print_smashed_obj): Add (and print) "msg" +argument. +* dbg_mlc.c (GC_debug_free, GC_print_all_smashed_proc): Pass +message to GC_print_smashed_obj. +* dbg_mlc.c (GC_debug_free): Call GC_size once. +* dbg_mlc.c (GC_debug_realloc): Calculate old_sz only if +allocation succeeded; remove unnecessary check for object is +smashed (since this is done in GC_debug_free); remove "clobbered" +local variable. + +* dbg_mlc.c (GC_store_debug_info_inner, GC_store_debug_info): +Rename "integer" argument to "linenum"; change the type of the +argument to int. +* gcj_mlc.c (GC_store_debug_info): Likewise. +* dbg_mlc.c (GET_OH_LINENUM): New macro. +* dbg_mlc.c (GC_print_obj, GC_print_smashed_obj): Use +GET_OH_LINENUM; adjust print format specifier. +* dbg_mlc.c (GC_debug_malloc, GC_debug_malloc_ignore_off_page, +GC_debug_malloc_atomic_ignore_off_page, +GC_debug_generic_malloc_inner, +GC_debug_generic_malloc_inner_ignore_off_page, +GC_debug_malloc_stubborn, GC_debug_malloc_atomic, +GC_debug_malloc_uncollectable, +GC_debug_malloc_atomic_uncollectable): Remove unnecessary cast of +"i". +* gcj_mlc.c (GC_debug_gcj_malloc): Likewise. + +* os_dep.c (GC_linux_stack_base): Rename to +GC_linux_main_stack_base. +* os_dep.c (GC_freebsd_stack_base): Rename to +GC_freebsd_main_stack_base; adjust error message. +* pthread_stop_world.c (GC_stop_init): Use GC_SEM_INIT_PSHARED +as an argument for sem_init(). +* pthread_support.c (pthread_create): Likewise. +* pthread_support.c (pthread_create): Abort in case sem_init() +fails. +* include/private/gc_priv.h (GC_SEM_INIT_PSHARED): Define. +* tests/initsecondarythread.c: Include gcconfig.h; call GC_INIT +from main() if it should be done from the primordial thread only. + +* alloc.c: Don't include sys/types.h for ArmCC. +* dyn_load.c: Likewise. +* os_dep.c: Likewise. +* mach_dep.c (_setjmp, _longjmp): Redirect to setjmp/longjmp for +ArmCC. +* mark.c (GC_noop): Define specially for ArmCC. +* include/private/gc_priv.h (GC_noop): Likewise. +* misc.c (GC_init): Don't test pointers comparison for ArmCC. +* misc.c: Don't include unistd.h for ArmCC. +* os_dep.c (pages_executable): Rename to GC_pages_executable; +make STATIC. +* os_dep.c (GC_unix_mmap_get_mem): Don't define for ArmCC. +* ptr_chck.c (GC_is_visible): Explicitly cast +(GC_DS_PER_OBJECT-GC_INDIR_PER_OBJ_BIAS) to word (to suppress +a compiler warning). +* include/private/gcconfig.h: Recognize __arm. +* include/private/gcconfig.h (HBLKPTR): Define for ArmCC. +* include/private/gcconfig.h (HBLKPTR): Add parentheses for +"bytes" argument. + +* pthread_support.c (GC_get_nprocs): Don't define for Android. +* pthread_support.c (GC_dummy_thread_local): Don't test +GC_LINUX_THREADS. +* include/gc_config_macros.h (GC_ADD_CALLER, GC_RETURN_ADDR): +Define for Android. + +* mach_dep.c (NO_GETCONTEXT): Move to gcconfig.h. +* os_dep.c (GC_write_fault_handler): Don't include ucontext.h if +NO_GETCONTEXT. +* include/private/gcconfig.h (GETPAGESIZE): Define as a sysconf +call for Android. + +* include/private/gc_locks.h (WIN32_LEAN_AND_MEAN, NOSERVICE): +Define before including windows.h. +* include/private/gc_priv.h (WIN32_LEAN_AND_MEAN, NOSERVICE): +Likewise. +* include/private/thread_local_alloc.h (WIN32_LEAN_AND_MEAN, +NOSERVICE): Likewise. +* include/private/gc_priv.h (MS_TIME_DIFF): Avoid floating-point +arithmetics; add a comment. + +* mark.c (GC_clear_hdr_marks): Don't test USE_MARK_BYTES. +* extra/setjmp_t.c (main): Don't test USE_MARK_BITS. +* include/private/gc_pmark.h (SET_MARK_BIT_EXIT_IF_SET): Likewise. +* include/private/gc_pmark.h (SET_MARK_BIT_EXIT_IF_SET): Remove +"mark_byte" local variable. +* include/private/gc_pmark.h (OR_WORD_EXIT_IF_SET): Add a comment +about that AO_or() is not used by GC unless USE_MARK_BITS +explicitly set. +* include/private/gc_priv.h (OR_WORD): Likewise. +* include/private/gc_pmark.h (INCR_MARKS): Remove trailing ';', +add parentheses. +* include/private/gc_priv.h (ONES): Define before use by +MAKE_COOLER. +* include/private/gc_priv.h (MARK_BITS_SZ): Define where used. +* include/private/gc_priv.h (OR_WORD): Don't define if +USE_MARK_BYTES. +* include/private/gcconfig.h (USE_MARK_BYTES); Remove duplicate +definition; simplify expression. + +* os_dep.c (GC_get_maps): Always close the file. +* pthread_support.c (GC_get_nprocs): Likewise. +* os_dep.c (READ): Define similarly across the file (without +parameters). +* pthread_support.c (GC_get_nprocs): Use signed int type for "i" +and "len" local variables (since read() may return -1). +* include/private/gc_pmark.h (LONG_MULT): Add prefix/suffix +double underscore; add "volatile" for asm. +* include/private/gc_pmark.h (LONG_MULT): Add missing +parentheses. +* include/private/gc_priv.h (OR_WORD): Likewise. +* include/private/gc_priv.h (OR_WORD): Remove unnecessary brackets +and ';' symbol. + +* os_dep.c (GC_get_stack_base): Implement for Android (same as +for Linux). +* pthread_support.c (GC_get_nprocs): Return 1 (instead of -1) if +failed to open "stat" file (not to issue a warning twice); update +the comment. +* pthread_support.c (GC_thr_init): Call sysconf() on Android to +get the number of CPUs. + +* include/private/gc_priv.h (_GNU_SOURCE): Revert one of the +recent patches regarding this macro as the macro should be set +(to 1) before including any other system header. + +* doc/README.environment (GC_INITIAL_HEAP_SIZE, +GC_MAXIMUM_HEAP_SIZE): Update. + +* misc.c (GC_parse_mem_size_arg): Allow 'k', 'M', 'G' suffixes in +heap size specifier; return 0 if not a valid one. +* include/gc_cpp.h: Explicitly define inline one-argument delete +operator for Cygwin (as a workaround). +* tests/test_cpp.cc (main): Suppress compiler warnings about +"assigned value is unused". + +* misc.c (GC_parse_mem_size_arg): New function. +* misc.c (GC_init): Use GC_parse_mem_size_arg(). +* pthread_stop_world.c (tkill): Declare for Android. + +* include/private/gc_priv.h (_GNU_SOURCE): Include features.h +first (except for NaCl) and then define the macro to 1 if not yet. + +* tests/tests.am (TESTS, check_PROGRAMS): Add +'initsecondarythread'. +* tests/tests.am (initsecondarythread_SOURCES, +initsecondarythread_LDADD): New variable. + +* dbg_mlc.c (GC_store_debug_info_inner): Always define; add +"const" to its string argument. +* dbg_mlc.c (GC_store_debug_info): Call GC_store_debug_info_inner. +* dbg_mlc.c (GC_debug_free): Set GC_have_errors in case of +smashed or previously deallocated found. +* dbg_mlc.c (GC_check_heap_block): Replace while loop with a for +one. +* reclaim.c (GC_reclaim_check): Likewise. +* dbg_mlc.c (GC_check_heap_proc): Remove redundant cast to word. +* os_dep.c (GC_get_stack_base): Don't initialize +stackbase_main_self/ss_sp on Solaris if thr_main() is zero (thus +calling GC_INIT() from a non-primordial thread is possible now). +* reclaim.c (GC_add_leaked): Turn into an inline one. +* reclaim.c (GC_reclaim_small_nonempty_block): +Change report_if_found type from int/word to boolean. +* include/private/gc_priv.h (GC_start_reclaim): Likewise. +* include/private/gc_priv.h (set_mark_bit_from_hdr, +clear_mark_bit_from_hdr): Place closing parenthesis properly. + +* os_dep.c (GC_get_main_stack_base): Try to use +pthread_attr_getstack first for Linux if THREADS. +* doc/README.macros (USE_GET_STACKBASE_FOR_MAIN): Adjust text +alignment. + +* dbg_mlc.c (GC_generate_random_backtrace_no_gc): Fix a message +typo. +* dbg_mlc.c (GC_debug_malloc): Add a comment (about zero size). +* dbg_mlc.c (GC_strdup): Call GC_err_printf instead of WARN (in +case of NULL argument). +* dbg_mlc.c (GC_free): In case of NULL argument, just return +(without any warning printed); eliminate "uncollectable" local +variable. + +* configure.ac (THREADDLLIBS): Use alternate thread library on +Solaris 8. +* configure.ac (need_atomic_ops_asm): Set to true only for SPARC +Solaris. +* configure.ac: Don't use libdl on mips-sgi-irix6. + +* mach_dep.c (NO_GETCONTEXT); Define for RTEMS. +* mach_dep.c (GC_with_callee_saves_pushed): Don't call +__builtin_unwind_init() for RTEMS; use setjmp() without the +leading underscore (for RTEMS). +* tests/test.c (BIG): Use smaller value for RTEMS. +* tests/test.c (main): Customize for RTEMS. + +* configure.host: Remove doubled words in comments. +* os_dep.c: Likewise. +* doc/README: Likewise. +* extra/setjmp_t.c: Likewise. +* tests/huge_test.c: Likewise. +* extra/setjmp_t.c (getpagesize, nested_sp, main, g): Replace the +K&R-style function definition with the ANSI C one. +* extra/setjmp_t.c (nested_sp): Implement in the same way as +GC_approx_sp. + +* dyn_load.c (GC_dyld_sections): Add more sctions. +* dyn_load.c (GC_dyld_add_sect_fmts): New static varaible. +* dyn_load.c (L2_MAX_OFILE_ALIGNMENT): New macro. +* dyn_load.c (GC_dyld_image_add, GC_dyld_image_remove): Improve +logging; add support for on-demand sections. + +* gcj_mlc.c (GC_gcj_malloc_initialized): Use STATIC unless +GC_ASSERTIONS. +* include/private/gc_priv.h (GC_gcj_malloc_initialized): Don't +declare (as external) unless GC_ASSERTIONS. +* os_dep.c (GC_win32_free_heap): Clear GC_heap_bases[] also for +Cygwin; add FIXME. +* include/private/gcconfig.h: Include for RTEMS. +* include/private/gcconfig.h: Add "#error" for every "-->" mark. +* include/private/gcconfig.h (CLEAR_DOUBLE): Turn the code into +an expression. +* include/private/pthread_support.h (SUSPENDED_EXT): Add new flag +(which existed previously as SUSPENDED and still exists in GCJ). +* include/private/pthread_support.h (DISABLED_GC): Change the +value (as it is already used by SUSPENDED_EXT). + +* tests/test.c (reverse_test): Modify count (BIG) for +ppc64-darwin. + +* reclaim.c (GC_print_all_errors): Recognize new GC_ABORT_ON_LEAK +macro and environment variable; abort if any error has been +printed provided the environment variable (or macro) is set. +* doc/README.environment (GC_ABORT_ON_LEAK): Document. +* doc/README.macros (GC_ABORT_ON_LEAK): Likewise. + +* os_dep.c (GC_unix_sbrk_get_mem, GC_unix_get_mem): Don't define +for RTEMS. +* include/private/gcconfig.h (RTEMS): Add support for. +* include/private/gcconfig.h (GET_MEM): Use calloc() for RTEMS. + +* mallocx.c (GC_malloc_uncollectable): Move to malloc.c (since +it is used internally in some places). + +* dbg_mlc.c (GC_register_finalizer_no_order): Remove redundant +declaration. +* dbg_mlc.c (GC_debug_malloc_replacement, +GC_debug_realloc_replacement): Rename RA to GC_DBG_RA. +* malloc.c (GC_debug_malloc_replacement): Likewise. +* mallocx.c (GC_debug_realloc_replacement): Likewise. +* dbg_mlc.c (GC_store_debug_info): Move proto from dbg_mlc.h. +* malloc.c (GC_strdup, GC_strndup, GC_wcsdup): Move to mallocx.c. +* malloc.c: Include errno.h only REDIRECT_MALLOC; remove redundant +includes of string.h. +* mallocx.c: Include string.h (for GC_strdup). +* include/private/dbg_mlc.h (GC_store_debug_info): Move declaration +to dbg_mlc.c. +* include/private/gc_locks.h (UNCOND_LOCK, UNCOND_UNLOCK): Remove +redundant trailing ';'. +* include/private/gc_priv.h (START_WORLD, COND_DUMP): Likewise. +* include/private/gc_locks.h (LOCK, UNLOCK): Place opening '{' +properly. +* include/private/gc_priv.h (GC_DBG_RA): Move from dbg_mlc.c, +malloc.c, mallocx.c. + +* alloc.c (GC_check_heap, GC_print_all_smashed): Move the +definition from misc.c. +* dbg_mlc.c (GC_debug_malloc_atomic_uncollectable): Define as +public. +* include/gc.h (GC_debug_malloc_atomic_uncollectable): Declare. +* include/gc.h (GC_MALLOC_ATOMIC_UNCOLLECTABLE): Define new public +macro. +* dbg_mlc.c (MAX_SMASHED): Don't define if already set. +* reclaim.c (MAX_LEAKED): Likewise. +* dbg_mlc.c (GC_add_smashed): Add FIXME about the concurrent +access to the global array. +* reclaim.c (GC_add_leaked): Likewise. +* misc.c (GC_print_back_height): Set on if GC_PRINT_BACK_HEIGHT +(new macro) is defined. +* doc/README.macros (GC_PRINT_BACK_HEIGHT): Document. +* misc.c (GC_dump_regularly, GC_init): Replace 0/1 for +GC_dump_regularly and GC_print_back_height variables with +FALSE/TRUE. +* reclaim.c (GC_print_all_errors): Refine the comment. + +* tests/test.c (reverse_test_inner): Undo one of the previous +patches which shifts "c" and "d" pointers only if +ALL_INTERIOR_POINTERS (since interior pointers are always +recognized in stacks). + +* misc.c (GC_stdout, GC_stderr): Move the definition to the place +where GC_log is defined (Unix only). +* misc.c (GC_init): Recognize "GC_ONLY_LOG_TO_FILE" environment +variable and the similar macro; redirect GC_stdout and GC_stderr +to GC_log if "GC_LOG_FILE" environment variable is set unless +prohibited by GC_ONLY_LOG_TO_FILE (Unix only). +* doc/README.environment (GC_ONLY_LOG_TO_FILE): Document. +* doc/README.macros (GC_ONLY_LOG_TO_FILE): Likewise. + +* misc.c (GC_stdout, GC_write): Rename GC_stdout to GC_log (Win32 +only). +* misc.c (GC_write): Add for MacOS (and OS/2); change WRITE() +accordingly. +* misc.c (GC_printf): Check GC_quiet before va_start(). + +* allchblk.c (GC_freehblk): Use GC_log_printf instead of GC_printf +inside "if (GC_print_stats)" branch. +* alloc.c (GC_collect_or_expand): Likewise. +* dyn_load.c (GC_register_dynamic_libraries): Likewise. +* headers.c (GC_scratch_alloc): Likewise. +* os_dep.c (GC_get_maps, GC_remap, PROTECT, +GC_write_fault_handler, GC_dirty_init, GC_mprotect_thread): Likewise. +* alloc.c (min_bytes_allocd): Use GC_log_printf instead of +GC_printf for DEBUG_THREADS output. +* darwin_stop_world.c (GC_stack_range_for, GC_suspend_thread_list, +GC_stop_world, GC_thread_resume, GC_start_world): Likewise. +* pthread_start.c (GC_inner_start_routine): Likewise. +* pthread_stop_world.c (GC_suspend_handler, GC_restart_handler, +GC_push_all_stacks, GC_suspend_all, GC_stop_world, +GC_start_world): Likewise. +* pthread_support.c (GC_mark_thread, GC_get_nprocs, +GC_start_rtn_prepare_thread, pthread_create): Likewise. +* checksums.c (GC_update_check_page): Use GC_printf() instead of +GC_err_printf() for error printing. +* checksums.c (GC_check_blocks, GC_check_dirty): Use GC_log_printf +instead of GC_printf for logging purposes. +* dyn_load.c (sys_errlist, sys_nerr, errno): Move declaration of +external variable outside from GC_register_dynamic_libraries. +* dyn_load.c (GC_register_dynamic_libraries): Don't use +sys_errlist value if errno equals to sys_nerr. +* dyn_load.c (GC_register_dynamic_libraries): Use GC_log_printf +instead of GC_printf for DL_VERBOSE output. +* dyn_load.c (GC_dyld_image_add, GC_dyld_image_remove, +GC_init_dyld): Use GC_log_printf instead of GC_printf for +DARWIN_DEBUG output. +* os_dep.c (catch_exception_raise): Use GC_log_printf +instead of GC_printf for DEBUG_EXCEPTION_HANDLING output. +* reclaim.c (GC_print_free_list): Move "n" increment out of +GC_printf() call. + +* win32_threads.c (DEBUG_CYGWIN_THREADS, DEBUG_WIN32_PTHREADS, +DEBUG_WIN32_THREADS): Remove. +* win32_threads.c (GC_register_my_thread_inner, +GC_win32_start_inner): Use GC_log_printf instead of GC_printf +inside "if (GC_print_stats)" branch. +* win32_threads.c (GC_PTHREAD_PTRVAL): New macro (defined only if +GC_PTHREADS). +* win32_threads.c (GC_delete_gc_thread, NUMERIC_THREAD_ID, +GC_pthread_join, GC_pthread_create): Use GC_PTHREAD_PTRVAL +macro. +* win32_threads.c (GC_push_stack_for, GC_mark_thread, +GC_CreateThread, GC_beginthreadex, GC_pthread_join, +GC_pthread_create, GC_pthread_start_inner, GC_thread_exit_proc, +GC_mark_thread_local_free_lists): Use GC_log_printf instead of +GC_printf for DEBUG_THREADS output. +* win32_threads.c (GC_win32_start_inner, GC_CreateThread, +GC_beginthreadex, GC_pthread_join, GC_pthread_create, +GC_pthread_start_inner, GC_thread_exit_proc): Cast +GetCurrentThreadId result to long; don't cast value of pthread_t +type to int; adjust printf format specifiers. +* doc/README.win32 (DEBUG_WIN32_PTHREADS): Remove obsolete +information. + +* tests/test.c (cons, small_cons, gcj_cons, check_ints, +check_uncollectable_ints, print_int_list, check_marks_int_list, +fork_a_thread, finalizer, mktree, chktree, alloc8bytes, +alloc_small, tree_test, typed_test, check_heap_stats, WinMain, +test, main): Remove unnecessary casts of GC_printf calls to void. + +* allchblk.c (GC_print_hblkfreelist): Adjust (make uniform across +BDWGC) printed message (adjust letters case, terminating dot and +new line symbols). +* alloc.c (GC_check_fl_marks): Likewise. +* backgraph.c (new_back_edges): Likewise. +* checksums.c (GC_check_dirty): Likewise. +* darwin_stop_world.c (GC_push_all_stacks, +GC_suspend_thread_list): Likewise. +* dbg_mlc.c (GC_print_type, GC_debug_free, GC_debug_realloc, +store_old): Likewise. +* dyn_load.c (GC_register_dynamic_libraries): Likewise. +* mark.c (GC_initiate_gc, GC_mark_some, GC_mark_from, GC_push_all, +GC_push_selected, GC_push_next_marked_dirty): Likewise. +* mark_rts.c (GC_exclude_static_roots_inner): Likewise. +* os_dep.c (GC_remap, GC_default_push_other_roots, +GC_push_thread_structures, GC_dirty_init, GC_read_dirty, +catch_exception_raise_state, catch_exception_raise_state_identity, +GC_mprotect_thread_notify, GC_mprotect_thread, +catch_exception_raise): Likewise. +* pthread_stop_world.c (GC_print_sig_mask, GC_push_all_stacks, +GC_stop_world, GC_stop_init): Likewise. +* pthread_support.c (GC_thr_init, GC_register_my_thread_inner, +GC_start_routine): Likewise. +* win32_threads.c (GC_register_my_thread_inner, +GC_push_all_stacks, GC_win32_start_inner, GC_pthread_join, +GC_pthread_start_inner): Likewise. +* alloc.c (GC_expand_hp_inner): Realign the code. +* mark.c (GC_mark_from, GC_mark_local, GC_do_parallel_mark): +Likewise. +* misc.c (GC_init): Likewise. +* os_dep.c (GC_dirty_init, GC_read_dirty): Likewise. +* include/private/gc_pmark.h (PUSH_CONTENTS_HDR): Likewise. +* tests/test.c (run_one_test): Likewise. +* misc.c (GC_err_puts): Document. +* misc.c (GC_err_write): Remove. +* os_dep.c (dump_maps): Likewise. +* include/private/gc_priv.h (GC_err_write): Likewise. +* os_dep.c (GC_print_address_map): Call GC_err_puts() instead of +dump_maps() and GC_err_write(). +* os_dep.c (GC_read_dirty): Remove redundant brackets. + +* tests/test.c (reverse_test_inner): Test interior pointer +recognition only if ALL_INTERIOR_POINTERS. +* tests/test.c (run_one_test): Replace GC_all_interior_pointers +with GC_get_all_interior_pointers(); simplify the expression. +* tests/test.c (check_heap_stats): Replace GC_bytes_allocd and +GC_bytes_allocd_before_gc with GC_get_total_bytes(). +* tests/test.c (main): Replace GC_gc_no with GC_get_gc_no(). + +* dbg_mlc.c (GC_debug_strdup, GC_debug_free): Output a portability +warning if the argument is NULL and GC is in leaks detection mode. +* dbg_mlc.c (GC_debug_strndup, GC_debug_wcsdup): New public +function definition. +* malloc.c (GC_strndup, GC_wcsdup, strndup): Likewise. +* mallocx.c (GC_posix_memalign): Likewise. +* malloc.c (strdup): Fix string size value; rename "len" to "lb". +* mallocx.c: Include errno.h unless WinCE (otherwise include +windows.h for Win32 error constants). +* win32_threads.c: Define WIN32_LEAN_AND_MEAN and NOSERVICE before +windows.h inclusion. +* misc.c (GC_init): Register at-exit callback if GC_find_leak +(even if GC_FIND_LEAK macro is unset). +* pthread_stop_world.c (NACL_STORE_REGS, +__nacl_suspend_thread_if_needed, GC_nacl_initialize_gc_thread): +Use BCOPY() instead of memcpy(). +* pthread_support.c (GC_init_real_syms): Likewise. +* doc/README.macros (GC_DEBUG_REPLACEMENT, GC_REQUIRE_WCSDUP): +Document new macro. +* doc/README.macros (REDIRECT_MALLOC): Update documentation. +* include/gc.h (GC_strndup, GC_posix_memalign, GC_debug_strndup): +New API function prototype. +* include/gc.h (GC_MALLOC, GC_REALLOC): Redirect to +GC_debug_malloc/realloc_replacement() if GC_DEBUG_REPLACEMENT. +* include/gc.h (GC_STRDUP): Remove redundant parentheses. +* include/leak_detector.h (realloc, strdup): Likewise. +* include/gc.h (GC_STRNDUP): New API macro. +* include/gc.h (GC_NEW, GC_NEW_ATOMIC, GC_NEW_STUBBORN, +GC_NEW_UNCOLLECTABLE): Add missing parentheses. +* include/gc.h (GC_wcsdup, GC_debug_wcsdup): New API function +prototype (only if GC_REQUIRE_WCSDUP). +* include/gc.h (GC_WCSDUP): New API macro (only if +GC_REQUIRE_WCSDUP). +* include/leak_detector.h: Include stdlib.h and string.h after gc.h (unless +GC_DONT_INCLUDE_STDLIB). +* include/leak_detector.h (malloc, calloc, free, realloc): +Undefine symbol before its redefinition. +* include/leak_detector.h (strndup, memalign, posix_memalign): +Redefine to the corresponding GC function. +* include/leak_detector.h (wcsdup): Redefine to GC_WCSDUP (only +if GC_REQUIRE_WCSDUP). +* include/leak_detector.h (CHECK_LEAKS): Add comment; don't define +the macro if already defined. + +* misc.c (GC_abort): Use _exit() (instead of DebugBreak) on Win32 +when doing code static analysis (to inform the tool that the +function is a no-return one). +* os_dep.c (GC_linux_stack_base): Remove a duplicate validation +of the length of "stat" file; use signed int type for "i", +"buf_offset" and "len" local variables (since read() may +return -1). + +* blacklst.c (GC_bl_init_no_interiors): New function (the code +moved from GC_bl_init). +* blacklst.c (GC_bl_init): Invoke GC_bl_init_no_interiors unless +GC_all_interior_pointers mode; remove unnecessarily parameter cast +for GC_scratch_alloc call. +* include/private/gc_priv.h (GC_bl_init): Move the function +declaration to misc.c file. +* misc.c (GC_bl_init_no_interiors): Add a prototype. +* misc.c (GC_set_all_interior_pointers): Allow values other than 0 +and 1; allow altering GC_set_all_interior_pointers value even +after GC initialization. +* obj_map.c (GC_initialize_offsets): Clear GC_valid_offsets and +GC_modws_valid_offsets if GC_all_interior_pointers is off. +* misc.c (GC_init): Don't call GC_initialize_offsets() unless +GC_all_interior_pointers mode. + +* alloc.c (GC_finish_collection): Remove redundant brackets; +adjust code indentation. +* blacklst.c (GC_add_to_black_list_normal): Simplify expression +(to improve code readability). +* blacklst.c (GC_is_black_listed): Join nested "if" (into a single +conditional expression); initialize "nblocks" just before the loop +beginning. +* misc.c (GC_init): Don't compute initial_heap_sz if GC is already +initialized. +* include/private/gc_priv.h (GC_initialize_offsets): Move the +function declaration to misc.c file. +* obj_map.c (GC_initialize_offsets): Remove offsets_initialized +static variable since the function is called only once. +* tests/middle.c (main): Use setter for GC_all_interior_pointers; +adjust printf format specifier (and cast the value passed to). + +* doc/README.macros (SMALL_CONFIG, LARGE_CONFIG): Refine the +documentation. +* include/private/gc_hdrs.h (LOG_BOTTOM_SZ): Ignore SMALL_CONFIG +if LARGE_CONFIG is defined. +* include/private/gc_priv.h (CPP_LOG_HBLKSIZE): Likewise. + +* alloc.c (GC_finish_collection): Replace "#else #ifdef" with +"#elif". +* include/private/gc_priv.h (CPP_LOG_HBLKSIZE, LOG_PHT_ENTRIES, +MAX_ROOT_SETS, MAX_HEAP_SECTS): Likewise. +* alloc.c (GC_expand_hp_inner): Check for GC_collect_at_heapsize +overflow even if not LARGE_CONFIG. +* dbg_mlc.c (GC_check_heap_proc): Check "oh" size even if +SMALL_CONFIG. +* finalize.c (GC_print_finalization_stats): Fix "#endif" comment. +* doc/README.environment (GC_LOG_FILE, GC_PRINT_VERBOSE_STATS, +GC_FULL_FREQUENCY): Refine the documentation. + +* extra/msvc_dbg.c: Test _MSC_VER macro; include "gc.h" (for +GC_word). +* extra/msvc_dbg.c (ULONG_PTR): Replace with GC_ULONG_PTR; define +as word. + +* dbg_mlc.c (GC_get_back_ptr_info, GC_print_obj, +GC_print_smashed_obj, GC_debug_free_inner): Add a code for a +LINT-like tool to instruct it that the function is invoked only +with valid parameters (otherwise a SEGV is ok); recognize LINT2 +new macro. +* misc.c (GC_abort): Instruct a LINT-like tool that the function +never returns in fact. +* os_dep.c (GC_linux_stack_base): Check for read buffer overflow; +close the file immediately after read; use STRTOULL() instead of +decoding the address number manually. +* include/private/gc_priv.h (EXPECT): Don't specify outcome for a +LINT-like tool. +* include/private/gc_priv.h (GC_all_interior_pointers): Instruct a +LINT-like tool that the value is restricted to zero and one only +(required since the variable is global and its value is used as a +part of array index expression is some places). + +* dbg_mlc.c (GC_make_closure): Fix SEGV in case GC_malloc returns +NULL. +* dbg_mlc.c (GC_debug_register_finalizer, +GC_debug_register_finalizer_no_order, +GC_debug_register_finalizer_unreachable, +GC_debug_register_finalizer_ignore_self): Handle out of memory +case properly (similar to GC_register_finalizer_inner). +* headers.c (GC_install_header): Handle the case when alloc_hdr() +returns NULL. +* os_dep.c (GC_get_maps_len): Defend against missing "maps" file. +* pthread_support.c (GC_mark_thread): Place a dummy return +statement (which uses "id" argument) before the actual use of "id" +as an array index (to suppress a warning produced by some static +code analysis tools). +* win32_threads.c (GC_mark_thread): Likewise. +* pthread_support.c (GC_thr_init): Abort (with the appropriate +message) if out of memory. + +* finalize.c (GC_register_finalizer_inner): Fix a typo in a +comment. +*include/private/gcconfig.h (STACKBOTTOM): Likewise. +* gcj_mlc.c (GC_core_gcj_malloc): Replace 0/1 with TRUE/FALSE in +EXPECT (the 2nd argument). +* malloc.c (GC_core_malloc_atomic, GC_core_malloc, GC_free): +Likewise. +* mark.c (GC_mark_and_push, GC_mark_and_push_stack): Likewise. +* thread_local_alloc.c (GC_malloc, GC_malloc_atomic): Likewise. +* include/private/gc_hdrs.h (HC_GET_HDR): Likewise. +* include/private/gc_priv.h (SMALL_OBJ): Likewise. +* include/private/specific.h (getspecific): Likewise. +* pthread_support.c (LOCK_STATS): Add a comment. + +* include/gc_pthread_redirects.h (GC_NO_DLOPEN, +GC_NO_PTHREAD_SIGMASK, GC_PTHREAD_CREATE_CONST, +GC_PTHREAD_EXIT_ATTRIBUTE, GC_NO_PTHREAD_CANCEL): Move the +definition to gc_config_macros. + +* pthread_support.c (pthread_cancel, GC_pthread_cancel_t, +GC_pthread_cancel): Test GC_NO_PTHREAD_CANCEL (instead of NACL and +GC_PTHREAD_EXIT_ATTRIBUTE). +* include/gc_pthread_redirects.h (GC_pthread_cancel, +pthread_cancel): Likewise. +* pthread_support.c (GC_pthread_create, GC_pthread_sigmask, +GC_pthread_join, GC_pthread_detach, GC_pthread_cancel): Realign +code. +* include/gc_pthread_redirects.h (GC_PTHREAD_EXIT_ATTRIBUTE): +Define as empty for NaCl. +* include/gc_pthread_redirects.h (GC_NO_PTHREAD_CANCEL): New macro +defined. + +* dyn_load.c (GC_init_dyld): Do not invoke +_dyld_bind_fully_image_containing_address() if GC_no_dls (as it is +not required to register the main data segment in that case). +* include/gc.h (GC_no_dls): Adjust the comment. + +* dyn_load.c (GC_MUST_RESTORE_REDEFINED_DLOPEN): Test +GC_NO_DLOPEN. +* gc_dlopen.c: Likewise. +* include/gc_pthread_redirects.h (GC_dlopen, dlopen): Likewise. +* gc_dlopen.c: Don't include dlfcn.h (as it is included in +gc_pthread_redirects.h). +* pthread_support.c (pthread_sigmask, GC_pthread_sigmask_t, +GC_pthread_sigmask): Test GC_NO_PTHREAD_SIGMASK (instead of +GC_DARWIN_THREADS, GC_OPENBSD_THREADS and NACL). +* include/gc_pthread_redirects.h (GC_pthread_sigmask, +pthread_sigmask): Likewise. +* win32_threads.c (pthread_sigmask, GC_pthread_sigmask): Test +GC_NO_PTHREAD_SIGMASK (instead of GC_WIN32_PTHREADS). +* pthread_support.c (pthread_create, GC_pthread_create_t, +GC_pthread_create): Rename GC_PTHREAD_CONST to +GC_PTHREAD_CREATE_CONST. +* win32_threads.c (GC_pthread_create): Likewise. +* include/gc_pthread_redirects.h: Likewise. +* include/gc_pthread_redirects.h (GC_NO_DLOPEN, +GC_NO_PTHREAD_SIGMASK): New macro defined. +* include/gc_pthread_redirects.h (GC_PTHREAD_CREATE_CONST): Set to +empty for NaCl. +* include/gc_pthread_redirects.h (GC_PTHREAD_EXIT_ATTRIBUTE): Do +not define for Android (as CANCEL_SAFE is not defined). + +* include/gc.h (GC_ADD_CALLER, GC_RETURN_ADDR, +GC_HAVE_BUILTIN_BACKTRACE, GC_CAN_SAVE_CALL_STACKS): Move +definition to gc_config_macros.h file. +* include/gc_config_macros.h: Check the file is included from gc.h +file. +* include/gc_version.h: Likewise. + +* gc_dlopen.c: Empty unit for NaCl. +* os_dep.c: Include fcntl.h for NaCl. +* os_dep.c (GC_get_main_stack_base): Ignore +USE_GET_STACKBASE_FOR_MAIN macro for NaCl. +* os_dep.c (GC_get_stack_base): Return GC_UNIMPLEMENTED for NaCl. +* os_dep.c (GC_remap): Use mmap (instead of mprotect) for NaCl. +* pthread_start.c (GC_inner_start_routine): Don't invoke +pthread_cleanup_push/pop for NaCl. +* pthread_stop_world.c (GC_nacl_num_gc_threads, +GC_nacl_thread_idx, GC_nacl_park_threads_now, +GC_nacl_thread_parker, GC_nacl_gc_thread_self, +GC_nacl_thread_parked, GC_nacl_thread_used, +GC_nacl_thread_parking_inited, GC_nacl_thread_alloc_lock): New +variable (fo NaCl only). +* pthread_stop_world.c (GC_remove_allowed_signals, +suspend_handler_mask, GC_stop_count, GC_world_is_stopped, +GC_retry_signals, SIG_THR_RESTART, GC_suspend_ack_sem, +GC_restart_ack_sem, GC_suspend_handler_inner, GC_suspend_handler, +GC_restart_handler): Don't define for NaCl. +* pthread_support.c (GC_get_nprocs): Likewise. +* include/private/gc_priv.h (SIG_SUSPEND): Likewise. +* include/private/gcconfig.h (LINUX): Likewise. +* pthread_stop_world.c (GC_push_all_stacks): Push register storage +for NaCl. +* pthread_stop_world.c (GC_suspend_all, GC_stop_world, +GC_start_world): Implement for NaCl. +* pthread_stop_world.c (GC_stop_world): Don't define unused "i" +local variable for OpenBSD (and NaCl). +* pthread_stop_world.c (NACL_STORE_REGS): New macro definition for +NaCl. +* pthread_stop_world.c (nacl_pre_syscall_hook, +__nacl_suspend_thread_if_needed, nacl_post_syscall_hook, +GC_nacl_initialize_gc_thread, GC_nacl_shutdown_gc_thread): New +function (for NaCl only). +* pthread_stop_world.c (GC_stop_init): Empty for NaCl. +* pthread_support.c (pthread_cancel, pthread_sigmask): Don't +redirect for NaCl. +* include/gc_pthread_redirects.h (pthread_cancel, +pthread_sigmask): Likewise. +* pthread_support.c (GC_nacl_initialize_gc_thread, +GC_nacl_shutdown_gc_thread): New internal prototype (NaCl only). +* pthread_support.c (GC_new_thread, GC_delete_thread): Initialize +and shutdown thread for NaCl. +* pthread_support.c (GC_thr_init): Call sysconf for NaCl. +* pthread_support.c (GC_pthread_exit): Call GC_thread_exit_proc +for NaCl. +* include/gc.h: Don't include features.h for NaCl. +* include/gc_pthread_redirects.h (GC_PTHREAD_CONST): New macro. +* include/gc_pthread_redirects.h (GC_pthread_create): Use +GC_PTHREAD_CONST instead of const. +* win32_threads.c (GC_pthread_create): Likewise. +* pthread_support.c (GC_pthread_create_t, GC_pthread_create, +pthread_create): Likewise. +* include/private/gcconfig.h (NACL): Recognize NaCl. +* include/private/gcconfig.h (GC_LINUX_THREADS): Valid for NaCl. +* include/private/pthread_stop_world.h (thread_stop_info): Add +reg_storage member; define NACL_GC_REG_STORAGE_SIZE macro (for +NaCl only). +* include/private/pthread_support.h (GC_nacl_gc_thread_self): +Declare internal variable (for NaCl only). + +* mach_dep.c (GC_with_callee_saves_pushed): Fix FE_ALL_EXCEPT +macro. + +* mark.c (GC_mark_some): Prefix and suffix "asm" and "volatile" +keywords with double underscore. +* os_dep.c (catch_exception_raise, catch_exception_raise_state, +catch_exception_raise_state_identity): Add GC_API_OSCALL to +function definition. +* os_dep.c (catch_exception_raise_state, +catch_exception_raise_state_identity): Move definition to be +before GC_ports. +* os_dep.c (catch_exception_raise): Declare to have the symbol +defined before GC_ports. +* os_dep.c (GC_ports): Store references to catch_exception_raise, +catch_exception_raise_state, catch_exception_raise_state_identity +(to prevent stripping these symbols as dead). +* os_dep.c (catch_exception_raise, catch_exception_raise_state, +catch_exception_raise_state_identity): Mark these symbols as +"referenced dynamically" via an assembler directive (unless +NO_DESC_CATCH_EXCEPTION_RAISE). +* include/private/gc_priv.h (GC_API_OSCALL): New macro (defined +similar to GC_API but as if GC_DLL is always defined). + +* os_dep.c: Don't include signal.h for GC_write_fault_handler on +Win32. +* os_dep.c (SIG_OK): Don't return true unless SIGSEGV or SIGBUS on +FreeBSD. +* os_dep.c (CODE_OK): Use SEGV_ACCERR on FreeBSD (define +SEGV_ACCERR for older FreeBSD releases). + +* dyn_load.c (GC_register_map_entries, +GC_register_dynamic_libraries_dl_iterate_phdr): Calculate +DATASTART only once if DATASTART_IS_FUNC. +* dyn_load.c (GC_register_dynamic_libraries_dl_iterate_phdr): +Calculate DATAEND only once if DATAEND_IS_FUNC. +* dyn_load.c: Add comment to some endif; realign some code. +* dyn_load.c (GC_init_dyld): Don't use +_dyld_bind_fully_image_containing_address if +NO_DYLD_BIND_FULLY_IMAGE defined; add FIXME. +* include/private/gcconfig.h (GC_data_start, GC_find_limit): +Declare if used by DATASTART/DATAEND, respectively. +* include/private/gcconfig.h (DATASTART_IS_FUNC, DATAEND_IS_FUNC): +Define if DATASTART/DATAEND is a function, respectively. +* include/private/gcconfig.h (GETPAGESIZE, NO_PTHREAD_TRYLOCK, +NO_DYLD_BIND_FULLY_IMAGE): Define for Darwin/arm as well; include +unistd.h. + +* os_dep.c (GC_setpagesize, GC_task_self, PROTECT, UNPROTECT): +Reorder to remove redundant ifdef for Win32. +* os_dep.c: Add comment to some endif. +* os_dep.c: Include pthread.h (for Linux even if single-threaded) +if USE_GET_STACKBASE_FOR_MAIN; also include it for Darwin. +* os_dep.c (STACKBOTTOM): Redefine for Darwin (unless prohibited +for some reason). +* os_dep.c (GC_get_main_stack_base): Allow +USE_GET_STACKBASE_FOR_MAIN for Linux even if single-threaded; add +assertion for the returned result. +* os_dep.c (GC_get_stack_base): Define for Darwin if +multi-threaded. +* os_dep.c (SIG_OK, CODE_OK): Add comment (for FreeBSD). +* os_dep.c (ID_STOP, ID_RESUME): Define only if threads. +* os_dep.c (catch_exception_raise): Remove redundant parentheses; +refine the documentation. + +* NT_MAKEFILE: Define _CRT_SECURE_NO_DEPRECATE for C++ files as +well. +* NT_STATIC_THREADS_MAKEFILE: Likewise. +* doc/README.macros (USE_GET_STACKBASE_FOR_MAIN): Refine. +* include/gc.h (GC_INIT): Document. +* include/private/gc_priv.h (GC_MACH_HEADER, GC_MACH_SECTION, +GC_GETSECTBYNAME): Define depending only on the word size (i.e., +define these macros also for ARM). +* tests/test.c (check_heap_stats): Print main thread stack bottom +as well (only if verbose mode is on). + +* mach_dep.c (GC_with_callee_saves_pushed): Fix and improve code +introduced by the previous patch (if GETCONTEXT_FPU_EXCMASK_BUG +and X86_64). + +* darwin_stop_world.c (GC_FindTopOfStack): Prefix and suffix +"volatile" keyword with double underscore. +* mach_dep.c (GETCONTEXT_FPU_EXCMASK_BUG): Recognize new macro and +include fenv.h if defined (unless NO_GETCONTEXT or HAVE_PUSH_REGS). +* mach_dep.c (GC_with_callee_saves_pushed): Restore FPU exception +mask corrupted by getcontext if GETCONTEXT_FPU_EXCMASK_BUG. +* include/private/gcconfig.h (GETCONTEXT_FPU_EXCMASK_BUG): Define +for Linux/amd64 (since its GLibc getcontext currently has the bug). + +* allchblk.c (GC_use_entire_heap): Change type to int (as declared +in gc.h); set the default value depending on new GC_USE_ENTIRE_HEAP +macro. +* misc.c (GC_init): Test GC_USE_ENTIRE_HEAP environment variable to +alter the default value of GC_use_entire_heap. +* doc/README.environment (GC_USE_ENTIRE_HEAP): Document. +* doc/README.macros (GC_USE_ENTIRE_HEAP): Likewise. + +* include/private/gcconfig.h (PARALLEL_MARK): Do not make it cause +MPROTECT_VDB undefining. + +* include/private/gcconfig.h (DYNAMIC_LOADING): Fix filename in +the comment. + +* include/private/gc_priv.h (_GC_arrays): Move the conditional +macro definitions (shortcuts for GC_arrays members) into the +structure body. + +* darwin_stop_world.c (GC_mach_handler_thread, +GC_use_mach_handler_thread, +GC_darwin_register_mach_handler_thread): Define only if +MPROTECT_VDB. +* darwin_stop_world.c (GC_suspend_thread_list): Use +GC_mach_handler_thread and GC_use_mach_handler_thread only if +MPROTECT_VDB. +* darwin_stop_world.c (GC_stop_world): Reset GC_mach_threads_count +only if defined (i.e. unless GC_NO_THREADS_DISCOVERY). +* misc.c (GC_init): Fix comment for GWW_VDB. +* os_dep.c (DARWIN_EXC_STATE, DARWIN_EXC_STATE_COUNT, +DARWIN_EXC_STATE_T, DARWIN_EXC_STATE_DAR): New macros. +* os_dep.c (catch_exception_raise): Use DARWIN_EXC_STATE, +DARWIN_EXC_STATE_COUNT, DARWIN_EXC_STATE_T, DARWIN_EXC_STATE_DAR. +* pthread_support.c (GC_thr_init): Define "dummy" local variable +only unless GC_DARWIN_THREADS. +* include/private/gcconfig.h (MPROTECT_VDB): Define for Darwin +even in the single-threaded mode; define for iPhone/iPad. +* include/private/gcconfig.h (IA64): Remove unnecessary "ifdef" +around "undef". +* include/private/gcconfig.h (HEURISTIC1): Remove unused for +Cygwin. +* include/private/gcconfig.h (STACKBOTTOM): Use fixed address for +Darwin/arm (instead of HEURISTIC1). + +* misc.c (GC_write): Replace multiple "ifdef/endif" with "elif" +(for ECOS and NOSYS). +* os_dep.c (GC_get_main_stack_base): Likewise. +* os_dep.c (GC_get_main_stack_base): Check +USE_GET_STACKBASE_FOR_MAIN macro before checking STACKBOTTOM one; +remove "dummy" variable (use result one instead). +* doc/README.macros (SN_TARGET_PS3): Document. +* extra/threadlibs.c (main): Don't output "-lpthread" (and "-ldl") +for Android. +* include/private/pthread_support.h: Fix comment for "endif". + +* misc.c (GC_allocate_ml): Define global variable if SN_TARGET_PS3. +* misc.c (GC_init): Initialize GC_allocate_ml if SN_TARGET_PS3. +* os_dep.c (SIGSEGV): Define to dummy zero if SN_TARGET_PS3. +* os_dep.c (GC_unix_mmap_get_mem): Don't define if SN_TARGET_PS3. +* os_dep.c (GC_default_push_other_roots, +GC_push_thread_structures): Define for SN_TARGET_PS3. +* include/private/gc_locks.h (GC_allocate_ml, LOCK, UNLOCK): Define +for SN_TARGET_PS3. +* include/private/gcconfig.h (SN_TARGET_PS3): Recognize new macro +(Sony PS/3 target). +* include/private/gcconfig.h (THREADS): Define unconditionally if +SN_TARGET_PS3. +* include/private/gcconfig.h (GET_MEM): Define for SN_TARGET_PS3. + +* alloc.c (GC_collect_or_expand): Replace NIL with NULL in message. +* dbg_mlc.c (GC_debug_malloc, GC_debug_malloc_ignore_off_page, +GC_debug_malloc_atomic_ignore_off_page, +GC_debug_generic_malloc_inner, +GC_generic_malloc_inner_ignore_off_page, GC_debug_malloc_stubborn, +GC_debug_malloc_atomic, GC_debug_malloc_uncollectable, +GC_debug_malloc_atomic_uncollectable): Likewise. +* gcj_mlc.c (GC_debug_gcj_malloc): Likewise. +* dbg_mlc.c (GC_check_annotated_obj): Replace NIL with NULL in a +comment. +* dyn_load.c (GC_FirstDLOpenedLinkMap): Likewise. +* mark_rts.c (GC_roots_present): Likewise. +* doc/README: Likewise. +* include/private/gc_hdrs.h (IS_FORWARDING_ADDR_OR_NIL): Likewise. +* include/private/gc_priv.h (_GC_arrays): Likewise. + +* configure.ac: Use AC_CHECK_LIB() to check for pthread instead of +just blindly linking to -lpthread, as Android includes pthread +support within libc and does not provide a separate libpthread. +* dyn_load.c (GC_register_dynamic_libraries): Skip current link map +entry if l_addr is NULL (Android/bionic only). +* pthread_stop_world.c (android_thread_kill): New internal function +(Android only). +* pthread_stop_world.c (GC_suspend_all, GC_start_world): Call +android_thread_kill (based on tkill) instead of pthread_kill on +Android (since pthread_kill cannot be used safely on the platform). +* pthread_support.c (GC_new_thread): Store thread Id (obtained from +gettid) for use by android_thread_kill (Android only). +* include/private/pthread_support.h (GC_Thread_Rep): Add kernel_id +structure member (Android only). +* include/private/gcconfig.h: Recognize __x86_64 macro as a synonym +of __x86_64__ (Darwin); define __environ macro (Android on M68K). + +* allchblk.c (GC_freehblk): Print extended error message (done via +GC_printf() before aborting with a short message) only if +GC_print_stats. +* dyn_load.c (GC_register_dynamic_libraries): Likewise. +* os_dep.c (GC_get_maps, GC_register_data_segments, GC_remap, +PROTECT, GC_write_fault_handler, GC_mprotect_thread): Likewise. +* pthread_stop_world.c (GC_start_world): Likewise. +* win32_threads.c (GC_register_my_thread_inner): Likewise. +* os_dep.c (GC_get_main_stack_base, GC_register_data_segments, +GC_dirty_init): Remove redundant print of an error message before +aborting with the same message. +* os_dep.c (GC_register_data_segments): Remove format specifier +from the string passed to GC_err_puts(); use ABORT instead of EXIT +(if invalid executable type). +* os_dep.c (GC_remap): Adjust printf format specifier (for long +type). +* os_dep.c (GC_dirty_init): Print a message about SIG_IGN detected +(for SIGSEGV/BUS) only if GC_print_stats. +* os_dep.c (catch_exception_raise): Join 2 adjacent GC_err_printf +calls. + +* tests/test.c (main): Print the relevant message if GWW_VDB. +* include/private/gcconfig.h: Don't define MPROTECT_VDB for Win32 +on x64 if compiled by GCC. + +* tests/staticrootstest.c: Include string.h for memset() prototype. +* tests/thread_leak_test.c (main): Fix printf() format specifiers. + +* CMakeLists.txt: Check enable_parallel_mark on Darwin. +* configure.ac: Likewise. +* darwin_stop_world.c (DARWIN_SUSPEND_GC_THREADS, +DARWIN_QUERY_TASK_THREADS): Rename to GC_NO_THREADS_DISCOVERY and +GC_DISCOVER_TASK_THREADS, respectively. +* os_dep.c (DARWIN_SUSPEND_GC_THREADS): Likewise. +* pthread_support.c (DARWIN_SUSPEND_GC_THREADS): Likewise. +* darwin_stop_world.c (DARWIN_QUERY_TASK_THREADS): Don't define +(and remove FIXME). +* darwin_stop_world.c (GC_use_threads_discovery): Add GC_API; +comment; remove FIXME. +* win32_threads.c (GC_NO_DLLMAIN): Rename to +GC_NO_THREADS_DISCOVERY. +* tests/test.c (GC_NO_DLLMAIN): Likewise. +* doc/README.macros (GC_NO_DLLMAIN): Likewise. +* doc/README.win32 (GC_NO_DLLMAIN): Likewise. +* doc/README.macros (GC_NO_THREADS_DISCOVERY): Update the comment. +* win32_threads.c (GC_win32_dll_threads): Define as macro to true +if GC_DISCOVER_TASK_THREADS (and not GC_NO_THREADS_DISCOVERY); +update the comment. +* win32_threads.c (GC_use_DllMain): Rename to +GC_use_threads_discovery; do not set GC_win32_dll_threads if +GC_DISCOVER_TASK_THREADS. +* win32_threads.c (GC_started_thread_while_stopped, +GC_lookup_thread_inner, UNPROTECT_THREAD, GC_lookup_pthread, +GC_thr_init, GC_pthread_create, DllMain): Rewrite some expressions +which use GC_win32_dll_threads to minimize the possibility of +an "unreachable code" compiler warning when GC_win32_dll_threads +is defined as a macro. +* win32_threads.c (GC_unregister_my_thread): Don't call +GC_delete_thread() if GC_win32_dll_threads and THREAD_LOCAL_ALLOC +(since can't happen); use "t" local variable only if not +GC_win32_dll_threads. +* doc/README.macros (GC_DISCOVER_TASK_THREADS): Document. +* include/gc.h (GC_use_DllMain): Rename to +GC_use_threads_discovery but keep old name as a macro definition. +* include/gc.h (GC_use_threads_discovery): Declare also for +Darwin; update the comment. +* tests/test.c (main): Call GC_use_threads_discovery for Darwin +(to test the mode if possible). + +* darwin_stop_world.c (DARWIN_SUSPEND_GC_THREADS, +DARWIN_QUERY_TASK_THREADS): New macro recognized. +* darwin_stop_world.c (GC_query_task_threads): add STATIC; +initialize to false; define as macro if DARWIN_SUSPEND_GC_THREADS +or DARWIN_QUERY_TASK_THREADS; remove FIXME. +* darwin_stop_world.c (GC_use_threads_discovery): New function +(for setting GC_query_task_threads value). +* darwin_stop_world.c (GC_mach_handler_thread, +GC_use_mach_handler_thread, GC_mach_thread, GC_MAX_MACH_THREADS, +GC_mach_threads, GC_mach_threads_count, GC_suspend_thread_list, +GC_darwin_register_mach_handler_thread): Define only if not +DARWIN_SUSPEND_GC_THREADS. +* darwin_stop_world.c (GC_stop_world, GC_start_world): Exclude +the code for GC_query_task_threads case from compilation unless +DARWIN_SUSPEND_GC_THREADS. +* os_dep.c (GC_darwin_register_mach_handler_thread): Declared only +if Darwin threads and not DARWIN_SUSPEND_GC_THREADS. +* os_dep.c (GC_mprotect_thread): Call +GC_darwin_register_mach_handler_thread only if THREADS and not +DARWIN_SUSPEND_GC_THREADS. +* pthread_support.c (marker_mach_threads): Don't define if +DARWIN_SUSPEND_GC_THREADS. +* pthread_support.c (GC_mark_thread): Don't fill in +marker_mach_threads if DARWIN_SUSPEND_GC_THREADS. +* include/private/gc_locks.h (GC_need_to_lock): Always declare for +THREADS case. + +* darwin_stop_world.c (GC_query_task_threads): Don't define to +false for DARWIN_DONT_PARSE_STACK case; unconditionally initialize +the variable to false (for now). +* darwin_stop_world.c (GC_push_all_stacks): Call task_threads() +only if not DARWIN_DONT_PARSE_STACK. +* darwin_stop_world.c (GC_stop_world, GC_start_world): Use the +approach based on task_threads() only if GC_query_task_threads +else use GC_threads table. + +* darwin_stop_world.c (GC_mach_threads): Remove static qualifier. +* darwin_stop_world.c (GC_stop_init): Remove (as we do not need to +really clear GC_mach_threads[]). +* darwin_stop_world.c (GC_stop_world): Reset GC_mach_threads_count +(instead of calling GC_stop_init). +* include/private/pthread_support.h (GC_stop_init): Remove proto. +* pthread_support.c (GC_stop_init): Add proto (unless Darwin). +* pthread_support.c (GC_thr_init): Don't call GC_stop_init() if +GC_DARWIN_THREADS. + +* darwin_stop_world.c (GC_stack_range_for): New static function +(move the code from GC_push_all_stacks). +* darwin_stop_world.c (GC_push_all_stacks): Call +GC_stack_range_for(); rename kern_return local variable to +kern_result. +* darwin_stop_world.c (GC_is_mach_marker): Change argument type +from mach_port_t to thread_act_t. +* pthread_support.c (GC_is_mach_marker): Likewise. + +* darwin_stop_world.c (GC_push_all_stacks): Fix "my_task" local +variable initialization (always call current_task()). +* pthread_support.c (GC_thr_init, GC_register_my_thread_inner): +Don't set thread's stop_info.stack_ptr value for Darwin. +* include/private/darwin_stop_world.h (thread_stop_info): Update +the comment for stack_ptr. + +* darwin_stop_world.c (GC_push_all_stacks): Rename "r", "me" local +variables to "kern_return" and "my_thread" ones, respectively; +call mach_port_deallocate() unconditionally. +* darwin_stop_world.c (GC_stop_world): Don't call mach_thread_self +if DEBUG_THREADS. + +* darwin_stop_world.c (GC_mach_thread): Move from +darwin_stop_world.h. +* include/private/darwin_stop_world.h (GC_mach_thread): Remove. +* win32_threads.c (GC_start_world): Define "thread_id" local +variable only if GC_ASSERTIONS; decide whether to resume a thread +based on its "suspended" field value; assert that suspended thread +stack_base is non-zero and the thread is not our one. + +* darwin_stop_world.c (GC_thread_resume): New inline function +(move code from GC_thread_resume). +* darwin_stop_world.c (GC_start_world): Check result of +task_threads(); call GC_thread_resume(). +* os_dep.c (GC_malloc_heap_l, GC_is_malloc_heap_base): Define +only if not CYGWIN32. +* os_dep.c (GC_is_heap_base): Call GC_is_malloc_heap_base() only +if not CYGWIN32. + +* darwin_stop_world.c (FindTopOfStack): Change return type to +ptr_t (from long); make GC_INNER; add GC_ prefix. +* darwin_stop_world.c (GC_push_all_stacks): Add thread_blocked +local variable (initialized from the corresponding GC_thread +field unless GC_query_task_threads); add assertion that our +thread is not blocked; prefix FindTopOfStack with GC_ and remove +no longer needed cast to ptr_t of the result; handle thread +blocked case (and remove FIXME); use GC_push_all_stack_sections +unless GC_query_task_threads (and remove FIXME). +* pthread_support.c (GC_FindTopOfStack): Declare (if needed). +* pthread_support.c (GC_do_blocking_inner): Call +GC_save_regs_in_stack (if needed) before acquiring the lock. +* win32_threads.c (GC_do_blocking_inner): Likewise. +* pthread_support.c (GC_do_blocking_inner): Set/clear topOfStack +field of GC_thread (Darwin only). +* include/private/pthread_support.h (GC_thread): Add topOfStack +field for Darwin (unless DARWIN_DONT_PARSE_STACK). + +* finalize.c (GC_check_finalizer_nested): Change return type to +char pointer (instead of int pointer); use explicit cast for +GC_finalizer_nested assignment. +* pthread_support.c (GC_check_finalizer_nested): Likewise. +* win32_threads.c (GC_check_finalizer_nested): Likewise. +* finalize.c (GC_finalizer_nested): Change type to unsigned char. +* finalize.c (GC_notify_or_invoke_finalizers): Change type of +"pnested" local variable to char pointer. +* pthread_support.c (GC_do_blocking_inner, +GC_call_with_gc_active): Use explicit cast for "thread_blocked" +field assignment. +* win32_threads.c (GC_lookup_pthread): Use explicit cast for +"suspended" field assignment. +* win32_threads.c (GC_Thread_Rep): Use short type for +finalizer_skipped; use char type for finalizer_nested and flags +fields and reorder some fields (to minimize GC_Thread_Rep +structure size). +* include/private/pthread_support.h (GC_Thread_Rep): Likewise. +* win32_threads.c (GC_Thread_Rep): Use char type for suspended +field (instead of GC_bool). +* include/private/pthread_support.h (GC_Thread_Rep): Use char type +for thread_blocked field (instead of short). + +* darwin_stop_world.c (GC_query_task_threads): New variable (or +macro). +* darwin_stop_world.c (GC_push_all_stacks): Use +GC_query_task_threads (to choose between algorithms based on +kernel task_threads and based on GC_threads table); update FIXME; +remove commented out GC_push_one statements. +* pthread_support.c (GC_thr_init, GC_do_blocking_inner, +GC_call_with_gc_active, GC_register_my_thread_inner): Initialize +stack_ptr field for all platforms. +* pthread_support.c (GC_call_with_gc_active): Initialize +saved_stack_ptr field for all platforms. +* include/private/darwin_stop_world.h (thread_stop_info): Add +stack_ptr field; change type of already_suspended from int to +GC_bool. + +* darwin_stop_world.c (GC_MAX_MACH_THREADS): New macro. +* darwin_stop_world.c (GC_mach_threads, GC_stop_init): Use +GC_MAX_MACH_THREADS instead of THREAD_TABLE_SZ. +* darwin_stop_world.c (GC_mach_threads): Add FIXME. +* darwin_stop_world.c (GC_stop_init, GC_suspend_thread_list, +GC_stop_world): Use FALSE and TRUE for already_suspended field and +"changed", "found" variables. +* darwin_stop_world.c (GC_is_mach_marker): New prototype (only if +PARALLEL_MARK). +* darwin_stop_world.c (GC_suspend_thread_list): Change return type +to GC_bool; change type of "changed", "found" to GC_bool; make +"my_thread" as an argument (instead of acquiring/deallocating it +locally); do not add my_thread, GC_mach_handler_thread and marker +threads to GC_mach_threads table; check for overflow of +GC_mach_threads table; increase GC_mach_threads_count if "found" +is true and info.suspend_count is non-zero. +* darwin_stop_world.c (GC_suspend_thread_list, GC_start_world): +Adjust "thread" format specifiers for GC_printf(); search thread +in "old_list" starting from the previous found one. +* darwin_stop_world.c (GC_stop_world): Rename "changes" to +"changed" local variable; remove "result" variable; adjust +GC_printf debugging message. +* darwin_stop_world.c (GC_start_world): Do not check for +my_thread and GC_use_mach_handler_thread (since they are not added +to GC_mach_threads table); call thread_info() only if +DEBUG_THREADS or GC_ASSERTIONS. +* pthread_support.c (marker_mach_threads): New static variable (if +Darwin). +* pthread_support.c (GC_is_mach_marker): New function (if Darwin). +* pthread_support.c (GC_mark_thread): Fill in marker_mach_threads +table (if Darwin). + +* alloc.c (GC_parallel): Define only if THREADS. +* misc.c (GC_get_parallel): Likewise. +* include/gc.h (GC_parallel, GC_get_parallel, +GC_get_suspend_signal, GC_allow_register_threads, +GC_register_my_thread, GC_unregister_my_thread): Define only if +GC_THREADS. +* include/gc.h (GC_get_heap_size): Fix a typo in a comment. + +* configure.ac: Use `AC_C_INLINE'. +* include/private/gc_priv.h (GC_INLINE): Use "inline" keyword +(determined by configure AC_C_INLINE) if HAVE_CONFIG_H is defined. + +* dyn_load.c (DL_ITERATE_PHDR_STRONG): New macro (define for +FreeBSD). +* dyn_load.c (GC_register_main_static_data): Move the definition +above GC_register_dynamic_libraries_dl_iterate_phdr one (FreeBSD +case); unconditionally return FALSE if DL_ITERATE_PHDR_STRONG. +* dyn_load.c (GC_register_dynamic_libraries_dl_iterate_phdr): Test +GC_register_main_static_data() result (instead of direct testing +of dl_iterate_phdr (to prevent a compiler warning). +* os_dep.c (CODE_OK): Test si_code also for the value of 2 +(FreeBSD case; required for FreeBSD v7+). +* os_dep.c (CODE_OK): Properly use parentheses (HPUX case). +* include/private/gcconfig.h (DATASTART): Cast etext argument in +GC_FreeBSDGetDataStart() call; remove unnecessary "&" (FreeBSD +case). + +* include/private/specific.h (quick_thread_id): Define thru +GC_approx_sp(); define as a macro. +* include/private/specific.h (getspecific): Use GC_INLINE instead +of __inline__ (to work around Sun CC which does not recognize +inline keyword surrounded with underscores). + +* darwin_stop_world.c (FindTopOfStack): Simplify condition +expressions. +* darwin_stop_world.c (GC_push_all_stacks): Merge two variants +of this function (DARWIN_DONT_PARSE_STACK). +* darwin_stop_world.c (GC_push_all_stacks): Add a check for our +thread is found (same as in pthread_stop_world.c). +* darwin_stop_world.c (GC_push_all_stacks): Print the number of +scanned threads if verbose (same as in pthread_stop_world.c). + +* darwin_stop_world.c (GC_push_all_stacks): Reset +thread_state_count value before every thread_get_state call; +refine the comment for thread_state_count. +* darwin_stop_world.c (GC_push_all_stacks): Ignore rsp, rip/eip, +rflags, cs, fs, gs, ss, ds, es, __pc registers; uncomment ebp +register pushing. +* darwin_stop_world.c (GC_push_all_stacks): Set outCount to +GC_MACH_THREAD_STATE_COUNT (instead of THREAD_STATE_MAX). +* darwin_stop_world.c (GC_push_all_stacks): Remove FIXME and WARN +for i386. + +* doc/README.macros (DARWIN_DONT_PARSE_STACK): Fix a typo. +* darwin_stop_world.c (GC_use_mach_handler_thread): Change type +to GC_bool. +* darwin_stop_world.c (GC_suspend_thread_list, GC_start_world): +Simplify the expressions involving GC_use_mach_handler_thread. +* darwin_stop_world.c (GC_darwin_register_mach_handler_thread): +Initialize GC_use_mach_handler_thread to TRUE (instead of 1). + +* include/gc_pthread_redirects.h (GC_pthread_sigmask, GC_dlopen, +pthread_sigmask, dlopen): Don't define for Win32 pthreads (and +don't include signal.h and dlfcn.h). + +* dyn_load.c (GC_register_dynlib_callback): Add FIXME. + +* include/private/gcconfig.h: Add support for FreeBSD on ppc64. + +* os_dep.c (PROTECT, UNPROTECT): Correct VM_PROT_EXEC to +VM_PROT_EXECUTE. + +* os_dep.c (os2_alloc): Don't set PAG_EXECUTE unless +pages_executable is on. +* os_dep.c (os2_alloc): Add FIXME (for recursion). +* os_dep.c (UNPROTECT): Abort with a more informative message if +pages_executable is on ("mprotect" case). +* os_dep.c (PROTECT, UNPROTECT): Set VM_PROT_EXEC if +pages_executable is on (Darwin case). +* pthread_support.c (GC_init_real_syms): Abort with an informative +message if libgc is linked after libpthread. + +* dyn_load.c (GC_register_dynlib_callback): Adjust "start" pointer +for 64-bit targets. +* pthread_support.c (start_mark_threads): Expand PTHREAD_CREATE +macro. +* pthread_support.c (start_mark_threads): Call INIT_REAL_SYMS() +since REAL(pthread_create) is used. +* pthread_support.c (PTHREAD_CREATE): Remove unused. + +* extra/threadlibs.c (main): Remove --wrap for "read" (since not +wrapped anymore). +* doc/README.linux (GC_USE_LD_WRAP): Likewise. +* os_dep.c (__wrap_read): Likewise. + +* include/gc_pthread_redirects.h: Test GC_PTHREADS and GC_H at the +beginning of the file. +* include/gc_pthread_redirects.h (GC_PTHREAD_EXIT_ATTRIBUTE): New +macro (defined only for Linux and Solaris). +* include/gc_pthread_redirects.h (GC_pthread_cancel, +GC_pthread_exit): Declare new API function (only if +GC_PTHREAD_EXIT_ATTRIBUTE). +* include/gc_pthread_redirects.h (pthread_cancel, pthread_exit): +Redirect (if GC_PTHREAD_EXIT_ATTRIBUTE). +* include/private/pthread_support.h (DISABLED_GC): New macro. +* pthread_support.c (pthread_cancel, pthread_exit): Restore +original definition or declare "real" function (if needed and +GC_PTHREAD_EXIT_ATTRIBUTE). +* pthread_support.c (GC_pthread_cancel_t, GC_pthread_exit_t): +Declare new types if needed. +* pthread_support.c (GC_pthread_cancel, GC_pthread_exit): New +function definition (only if GC_PTHREAD_EXIT_ATTRIBUTE). +* pthread_support.c (GC_init_real_syms): Initialize pointers to +the "real" pthread_cancel and pthread_exit (only if +GC_PTHREAD_EXIT_ATTRIBUTE). +* pthread_support.c (GC_unregister_my_thread): Enable collections +if DISABLED_GC was set (only if GC_PTHREAD_EXIT_ATTRIBUTE). +* pthread_support.c (pthread_cancel, pthread_exit): New wrapped +function definition (only if GC_PTHREAD_EXIT_ATTRIBUTE defined). +* pthread_support.c (GC_start_routine): Refine the comment. +* extra/threadlibs.c (main): Adjust --wrap (add "read", +"pthread_exit", "pthread_cancel" but remove "sleep"). +* doc/README.linux (GC_USE_LD_WRAP): Likewise. + +* include/gc.h (GC_MALLOC_STUBBORN): Remove trailing ';' in the +macro definition. +* include/gc.h (GC_reachable_here): Likewise. +* include/gc.h (GC_reachable_here): Prefix and postfix "volatile" +with double '_'. + +* pthread_start.c: New file. +* CMakeLists.txt (SRC): Add pthread_start.c. +* Makefile.am (libgc_la_SOURCES): Likewise. +* Makefile.direct (CSRCS): Likewise. +* Makefile.direct (OBJS): Add pthread_start.obj. +* extra/gc.c: Add a comment; include pthread_start.c. +* pthread_support.c (start_info): Move the struct definition down +closer to its usage. +* pthread_support.c (GC_thread_exit_proc): Replace STATIC with +GC_INNER. +* pthread_support.c (GC_inner_start_routine): Move to the +definition to pthread_start.c; leave only the prototype; remove +STATIC. +* pthread_support.c (GC_start_rtn_prepare_thread): New function +(contains parts of the original GC_inner_start_routine). + +* configure.ac (NO_EXECUTE_PERMISSION): Add comment. +* doc/README.macros (NO_EXECUTE_PERMISSION): Update the +documentation. +* include/gc.h (GC_set_pages_executable, GC_get_pages_executable): +New API function declaration. +* os_dep.c (OPT_PROT_EXEC): Remove (superseded by +pages_executable). +* os_dep.c (pages_executable): New static variable. +* os_dep.c (IGNORE_PAGES_EXECUTABLE): New macro (used by +GC_get_pages_executable only). +* os_dep.c (GC_unix_mmap_get_mem, GC_remap, PROTECT, UNPROTECT): +Replace OPT_PROT_EXEC with pages_executable. +* os_dep.c (GC_unix_mmap_get_mem, GC_remap, GC_win32_get_mem, +GC_wince_get_mem, UNPROTECT): Undefine IGNORE_PAGES_EXECUTABLE. +* os_dep.c (GC_win32_get_mem, GC_wince_get_mem, GC_remap, PROTECT, +UNPROTECT): Use PAGE_EXECUTE_... only if pages_executable is on. +* os_dep.c (GC_set_pages_executable, GC_get_pages_executable): New +API function definition. + +* tests/test.c (check_heap_stats): Increase max_heap_sz by 20% for +64-bit CPUs (to prevent "Unexpected heap growth" failure on Win64, +at least). + +* tests/test.c (check_heap_stats): Increase max_heap_sz by 25% for +32-bit CPUs (to prevent "Unexpected heap growth" failure). + +* gc_dlopen.c (dlopen): Prototype REAL_DLFUNC if GC_USE_LD_WRAP. +* pthread_support.c (pthread_create, pthread_join, pthread_detach, +pthread_sigmask): Likewise. +* gc_dlopen.c (dlopen): Remove cast (redundant since the prototype +is added). +* gc_dlopen.c (GC_dlopen): Fix return type. +* pthread_support.c (GC_init_real_syms): Don't define +LIBPTHREAD_NAME, LIBPTHREAD_NAME_LEN, len, namebuf and +libpthread_name if RTLD_NEXT. + +* gc_dlopen.c (disable_gc_for_dlopen): Update the comment. +* gc_dlopen.c (dlopen): Likewise. +* include/gc.h (GC_enable_incremental): Refine the comment. +* include/gc.h (DECLSPEC_NORETURN): Define macro as empty if +missing (only for Win32). +* include/gc.h (GC_ExitThread): Use DECLSPEC_NORETURN. +* win32_threads.c (GC_ExitThread): Likewise. +* include/gc.h (GC_endthreadex): Add a comment. + +* include/cord.h: Fix typos. + +* Makefile.am (EXTRA_DIST): Add "CMakeLists.txt" and +"tests/CMakeLists.txt". +* doc/doc.am (dist_pkgdata_DATA): Add "doc/README.cmake". + +* mach_dep.c (NO_GETCONTEXT): Also define if AVR32. +* include/private/gcconfig.h (AVR32): New macro (also define the +supplementary macros for the target). +* include/private/thread_local_alloc (USE_COMPILER_TLS): Don't +define for AVR32. + +* tests/leak_test.c (main): Explicitly define as returning int +(to prevent a spurious test failure on some Linux/alpha targets). +* tests/thread_leak_test.c (main): Likewise. +* tests/thread_leak_test.c: Initialize GC_find_leak in the main +thread (before GC_INIT) only. +* tests/leak_test.c (main): Use GC_set_find_leak() instead of +accessing GC_find_leak directly. +* tests/thread_leak_test.c (main): Likewise. + +* include/gc.h (GC_find_leak, GC_finalize_on_demand, +GC_java_finalization, GC_dont_expand, GC_no_dls, +GC_dont_precollect): Simplify the comment (remove the information +about data races since the value is boolean). + +* os_dep.c (GC_get_stack_base, GC_get_main_stack_base): New +Solaris-specific implementation (based on thr_stksegment). +* os_dep.c (stackbase_main_self, stackbase_main_ss_sp): New static +variable used by the Solaris-specific GC_get_stack_base(). + +* pthread_support.c (GC_mark_thread_local_free_lists, +GC_check_tls): Mark (and check) only for live threads (in case of +GC_destroy_thread_local() is called already but GC_delete_thread() +is not yet). +* win32_threads.c (GC_mark_thread_local_free_lists, GC_check_tls): +Likewise. + +* NT_MAKEFILE: Remove the comment about DLL and Win32S. +* NT_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_STATIC_THREADS_MAKEFILE: Likewise. +* NT_MAKEFILE: Add ".SUFFIXES" directive (to handle gc_cpp.cc +properly on VS 2005+). +* NT_MAKEFILE: Update GC log file name in comments. +* NT_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_THREADS_MAKEFILE: Likewise. +* doc/README.win32: Likewise. +* NT_MAKEFILE: Remove ":full" for "-debug" option (since no +longer supported by VS). +* NT_STATIC_THREADS_MAKEFILE: Likewise. +* NT_MAKEFILE: Commented out copying of gc_cpp.cc to gc_cpp.cpp. +* NT_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_THREADS_MAKEFILE: Likewise. +* NT_STATIC_THREADS_MAKEFILE: Add -D PARALLEL_MARK option. +* NT_STATIC_THREADS_MAKEFILE: Increase stack size for gctest.exe. +* NT_X64_STATIC_THREADS_MAKEFILE: Remove "-stack" option (use the +default stack size limit). +* NT_X64_THREADS_MAKEFILE: Rename "gc64_dll.dll" to "gc64.dll". +* win32_threads.c (GC_get_next_stack): Always define (since it is +also used for Cygwin now). + +* alloc.c (GC_maybe_gc): Move GC_notify_full_gc() call upper to +be just before GC_clear_marks() call. +* include/gc_mark.h (GC_start_callback_proc): Refine the comment. + +* Makefile.am (check_LTLIBRARIES): Initialize to empty. +* tests/tests.am (TESTS, check_PROGRAMS): Add staticrootstest. +* tests/tests.am (staticrootstest_SOURCES, staticrootstest_LDADD, +libstaticrootslib_la_SOURCES, libstaticrootslib_la_LIBADD, +libstaticrootslib_la_LDFLAGS, libstaticrootslib_la_DEPENDENCIES): +Define. +* tests/tests.am (check_LTLIBRARIES): Add libstaticrootslib.la. + +* tests/staticrootstest.c: New file. +* tests/staticrootslib.c: Likewise. + +* dyn_load.c (GC_get_next_stack, GC_cond_add_roots): Define for +Cygwin as well as other win32 targets. +* dyn_load.c (GC_wnt): Define to constant true. +* dyn_load.c (GC_register_dynamic_libraries): Define for Cygwin as +well as other win32 targets. +* mark_rts.c (rt_hash, GC_roots_present, add_roots_to_index): +Don't define for Cygwin, as on other win32. +* mark_rts.c (GC_add_roots_inner, GC_clear_roots): Handle on +Cygwin as for other win32 targets. +* mark_rts.c (GC_rebuild_root_index): Don't declare on Cygwin, as +other win32. +* mark_rts.c (GC_remove_tmp_roots): Do declare on Cygwin as on +other win32. +* mark_rts.c (GC_remove_roots, GC_remove_roots_inner): Don't +declare on Cygwin as on other win32. +* mark_rts.c (GC_is_tmp_root): Do declare on Cygwin when +!NO_DEBUGGING, as on other win32 targets. +* mark_rts.c (GC_cond_register_dynamic_libraries): Handle on +Cygwin as for other win32 targets. +* os_dep.c (GC_setpagesize): Handle on Cygwin as on other win32. +* os_dep.c (GC_get_main_stack_base): Don't declare on Cygwin, as +other win32. +* os_dep.c (GC_sysinfo): Declare on Cygwin, as other win32. +* os_dep.c (GC_win32_get_mem): Declare on Cygwin, as on other +Win32, but call GC_unix_get_mem instead of GlobalAlloc. +* os_dep.c (GC_win32_free_heap): Declare on Cygwin (as empty). +* ptr_chck.c (GC_is_visible): Register dynamic libraries on Cygwin +as on other win32 platforms. +* win32_threads.c (GC_get_next_stack): Define on Cygwin as well as +for dynamic loading targets. +* include/private/gc_priv.h (GC_INNER): Don't try to use +visibility on Cygwin which does not support it. +* include/private/gc_priv.h (struct roots): Don't declare r_next +member on Cygwin as on other windows hosts. +* include/private/gc_priv.h (LOG_RT_SIZE, RT_SIZE): Don't define +likewise. +* include/private/gc_priv.h (struct _GC_arrays): Do declare +_heap_bases[] member and don't declare _root_index likewise. +* include/private/gc_priv.h (GC_heap_bases): Do define likewise. +* include/private/gc_priv.h (_SYSTEM_INFO): Do forward-declare +likewise. +* include/private/gc_priv.h (GC_sysinfo): Do declare extern +likewise. +* include/private/gcconfig.h (GC_win32_get_mem, GET_MEM): Do +prototype on Cygwin as other win32 platforms. + +* os_dep.c (GC_get_main_stack_base): Use pthread_getattr_np() and +pthread_attr_getstack() instead of GC_get_stack_base() (and check +returned stackaddr for NULL); output a warning on failure. + +* alloc.c (GC_start_call_back): Replace the definition type to +GC_start_callback_proc. +* alloc.c (GC_set_start_callback, GC_get_start_callback): New +setter/getter function. +* alloc.c (GC_try_to_collect_inner): Call GC_notify_full_gc() +unconditionally (because GC_try_to_collect_inner always does full +GC). +* include/gc_mark.h (GC_start_callback_proc): New type. +* include/gc_mark.h (GC_set_start_callback, +GC_get_start_callback): New API function declaration. + +* doc/README.macros (USE_GET_STACKBASE_FOR_MAIN): Document. +* os_dep.c (GC_get_main_stack_base): Recognize +USE_GET_STACKBASE_FOR_MAIN (only if THREADS and LINUX_STACKBOTTOM) +and use GC_get_stack_base() in this case. + +* os_dep.c (GC_get_stack_base): Add LOCK/UNLOCK() (since +GC_find_limit_with_bound() should be called with the lock held). +* backgraph.c (FOR_EACH_PRED): Fix a typo. + +* alloc.c (GC_set_stop_func, GC_get_stop_func): Add +DCL_LOCK_STATE. +* finalize.c (GC_notify_or_invoke_finalizers): Likewise. +* gc_dlopen.c (disable_gc_for_dlopen): Likewise. +* gcj_mlc.c (maybe_finalize, GC_debug_gcj_malloc): Likewise. +* mark.c (GC_print_trace): Likewise. +* misc.c (GC_set_warn_proc, GC_get_warn_proc, GC_enable, +GC_disable, GC_new_free_list, GC_new_kind, GC_new_proc, +GC_set_oom_fn, GC_get_oom_fn, GC_set_finalizer_notifier, +GC_get_finalizer_notifier): Likewise. +* os_dep.c (GC_get_stack_base, GC_print_callers): Likewise. +* pthread_support.c (GC_is_thread_tsd_valid, +GC_wait_for_gc_completion, GC_init_parallel, GC_do_blocking_inner, +GC_call_with_gc_active, GC_unregister_my_thread, pthread_join, +pthread_detach, GC_register_my_thread, GC_inner_start_routine, +pthread_create): Likewise. +* reclaim.c (GC_print_all_errors): Likewise. +* win32_threads.c (GC_is_thread_tsd_valid, GC_register_my_thread, +GC_unregister_my_thread, GC_do_blocking_inner, +GC_call_with_gc_active, GC_lookup_pthread, GC_pthread_join, +GC_pthread_start_inner, GC_thread_exit_proc, GC_pthread_detach, +GC_init_parallel): Likewise. + +* doc/README.darwin: Update. + +* CMakeLists.txt: Adjust INCLUDE_DIRECTORIES and SRC (to make it +usable on Mac OS X). +* doc/README.cmake: Update. + +* CMakeLists.txt: New file (adding CMake support). +* tests/CMakeLists.txt: Likewise. +* doc/README.cmake: Likewise. + +* configure.ac (darwin): Don't define HAS_PPC_THREAD_STATE... +macros. +* include/private/gc_priv.h (THREAD_FLD): Recognize +__DARWIN_UNIX03 instead of HAS_PPC_THREAD_STATE... macros. + +* pthread_support.c: Include and for +OpenBSD. +* pthread_support.c (get_ncpu): Define also for Darwin, NetBSD and +OpenBSD. +* pthread_support.c (GC_thr_init): Use get_ncpu() for Darwin, +NetBSD and OpenBSD. + +* mallocx.c (GC_generic_malloc_many, GC_malloc_many): Define even +if THREADS is undefined. +* include/gc.h (GC_malloc_many): Update the comment. + +* include/gc_cpp.h (GC_PLACEMENT_DELETE): Define for Embarcadero +(formerly known as Borland) C++ compiler v6.21+. +* include/gc_cpp.h (GC_NO_OPERATOR_NEW_ARRAY): Define for ancient +VC++ compilers. + +* win32_threads.c (GC_register_my_thread_inner, +GC_pthread_start_inner): Undo the previous commit changes for +the thread flags and DETACHED state (since the state is only +tested in GC_thread_exit_proc). + +* include/gc.h (GC_unregister_my_thread): Fix a typo; update the +comment. +* pthread_support.c (GC_delete_thread): Allow to delete the main +thread (don't call GC_INTERNAL_FREE for it); update the comment. +* win32_threads.c (GC_delete_thread): Likewise. +* pthread_support.c (GC_unregister_my_thread): Add an assertion +for FINISHED flag is unset. +* tests/test.c (check_heap_stats): Test the main thread +unregistering (only if THREADS). +* win32_threads.c (GC_register_my_thread_inner): Set flags to +DETACHED (only if GC_PTHREADS). +* win32_threads.c (GC_unregister_my_thread): Add FIXME (for +GC_wait_for_gc_completion). +* win32_threads.c (GC_pthread_start_inner): Clear flags detached +state if needed; set pthread_id and flags while holding the lock. + +* include/private/gc_priv.h (SIG_SUSPEND): Don't define for +OpenBSD and Darwin. + +* include/gc.h: Recognize _M_X64 (as an alias for _AMD64_). + +* test.c (main, WinMain): Consistently don't invoke +GC_enable_incremental() if MAKE_BACKGRAPH is defined, but +do invoke it even if parallel marking is enabled. + +* tests/test.c (reverse_test): Comment out a check for MSWIN32 +(when determing BIG value) assuming outdated win32S. +* tests/test.c (reverse_test): Rename to reverse_test_inner; +change the declaration (to be of GC_fn_type); call itself thru +GC_call_with_gc_active() if the argument is zero. +* tests/test.c (reverse_test): New function added calling +reverse_test_inner thru GC_do_blocking (to test GC_do_blocking and +GC_call_with_gc_active). + +* doc/README.macros (IGNORE_DYNAMIC_LOADING, PLATFORM_ANDROID): +Document. +* dyn_load.c: Don't include if PLATFORM_ANDROID. +* dyn_load.c: Include bionic (instead of ) if +PLATFORM_ANDROID. +* include/private/gcconfig.h (LINUX): Define also if +PLATFORM_ANDROID (for the windows-based toolkit). +* include/private/gcconfig.h (SEARCH_FOR_DATA_START): Explicitly +define for Android/x86 platform. +* include/private/gcconfig.h (IGNORE_DYNAMIC_LOADING): Recognize +new macro (undefine DYNAMIC_LOADING in this case). +* include/private/gcconfig.h (CANCEL_SAFE): Don't define if +PLATFORM_ANDROID. +* include/private/gcconfig.h (IF_CANCEL): Fix definition for the +explicitly defined CANCEL_SAFE. + +* allchblk.c (GC_allochblk_nth): Don't call GC_remove_protection() +if GC_DISABLE_INCREMENTAL. +* reclaim.c (GC_reclaim_generic): Likewise. +* checksums.c (GC_page_was_ever_dirty): Add prototype. +* include/private/gc_locks.h (GC_mark_lock_holder): Don't declare +unless PARALLEL_MARK. +* include/private/gc_priv.h (GC_dirty_maintained, +GC_page_was_dirty, GC_remove_protection, GC_dirty_init): Don't +declare if GC_DISABLE_INCREMENTAL. +* include/private/gc_priv.h (GC_print_finalization_stats): Don't +declare if SMALL_CONFIG. +* include/private/gcconfig.h (CHECKSUMS): Explicitly undefine if +GC_DISABLE_INCREMENTAL (since nothing to check). +* include/private/gcconfig.h (DEFAULT_VDB): Don't define if +GC_DISABLE_INCREMENTAL. +* os_dep.c (GC_dirty_maintained): Likewise. +* mark.c (GC_initiate_gc): Don't call GC_read_dirty() if +GC_DISABLE_INCREMENTAL. +* os_dep.c (GC_gww_page_was_ever_dirty, GC_page_was_ever_dirty): +Uncomment; define only if CHECKSUMS. + +* darwin_stop_world.c (GC_push_all_stacks): Fix a bug (call +GC_push_all_stack() instead of GC_push_all_stack_frames()). +* include/private/gc_priv.h (GC_push_all_stack_frames, +GC_push_all_register_frames): Rename to +GC_push_all_stack_sections and GC_push_all_register_sections, +respectively. +* mark_rts.c (GC_push_all_stack_frames, +GC_push_all_register_frames, GC_push_all_stack_part_eager_frames, +GC_push_current_stack): Likewise. +* pthread_stop_world.c (GC_push_all_stacks): Likewise. +* win32_threads.c (GC_push_stack_for): Likewise. +* misc.c (GC_call_with_gc_active): Rename "frame" local variable +to "stacksect". +* pthread_support.c (GC_call_with_gc_active): Likewise. +* win32_threads.c (GC_call_with_gc_active): Likewise. +* pthread_support.c (GC_call_with_gc_active): Update FIXME for +Darwin. +* win32_threads.c (GC_Thread_Rep): Update the comment for +traced_stack_sect. + +* darwin_stop_world.c (GC_push_all_stacks): Rename +activation_frame to traced_stack_sect. +* include/private/gc_priv.h (GC_push_all_stack_frames, +GC_push_all_register_frames): Likewise. +* include/private/pthread_support.h (GC_Thread_Rep): Likewise. +* mark_rts.c (GC_push_all_register_frames, +GC_push_all_stack_frames, GC_push_all_stack_part_eager_frames, +GC_push_current_stack): Likewise. +* pthread_stop_world.c (GC_push_all_stacks): Likewise. +* pthread_support.c (GC_call_with_gc_active): Likewise. +* win32_threads.c (GC_Thread_Rep, GC_call_with_gc_active, +GC_push_stack_for): Likewise. +* include/private/gc_priv.h (GC_activation_frame_s): Rename to +GC_traced_stack_sect_s. +* include/private/gc_priv.h (GC_activation_frame): Rename to +GC_traced_stack_sect. +* misc.c (GC_activation_frame, GC_call_with_gc_active): Likewise. +* doc/README.macros (UNICODE): Document. + +* doc/README.macros (GC_READ_ENV_FILE): Document (new macro). +* include/private/gc_priv.h (GETENV): Recognize GC_READ_ENV_FILE; +declare and use GC_envfile_getenv(). +* misc.c (GC_envfile_content, GC_envfile_length): New static +variable (only if GC_READ_ENV_FILE). +* misc.c (GC_ENVFILE_MAXLEN): New macro (used in GC_envfile_init). +* misc.c (GC_envfile_init, GC_envfile_getenv): New function (only +if GC_READ_ENV_FILE). +* misc.c (GC_init): Call GC_envfile_init() (before using GETENV) +if GC_READ_ENV_FILE. +* misc.c (GC_init): Move GC_setpagesize() and GC_init_win32() +calls to be just before GC_envfile_init() one (since the latter +uses GET_MEM). +* misc.c (GC_abort): use ExitProcess() (instead of DebugBreak) for +WinCE if NO_DEBUGGING; add a comment for DebugBreak() (for WinCE). +* mark_rts.c (GC_add_roots_inner): Remove redundant trailing '\n' +from the ABORT message. +* misc.c (GC_init): Likewise. +* os_dep.c (GC_get_main_stack_base, GC_register_data_segments): +Likewise. +* pthread_stop_world.c (GC_push_all_stacks): Likewise. +* pthread_support.c (GC_init_real_syms, start_mark_threads): +Likewise. + +* win32_threads.c (GC_get_next_stack): Don't define for Cygwin +(since unused for now). + +* dyn_load.c (HAVE_REGISTER_MAIN_STATIC_DATA): Don't define unless +GC_register_main_static_data() is defined. +* dyn_load.c (GC_register_dynamic_libraries): Define only if used +(if DYNAMIC_LOADING or PCR or Win32/CE). +* dyn_load.c (GC_register_main_static_data): Define the default +one only if DYNAMIC_LOADING. +* include/private/gc_priv.h (GC_register_dynamic_libraries): +Declare only if used (to prevent compiler warning). + +* mark_rts.c (GC_approx_sp): Add a comment (for GCC). + + +== [7.2alpha4] 2009-12-01 == + +* configure.ac (AC_CONFIG_COMMANDS): Quote srcdir value. + +* include/gc.h (GC_get_suspend_signal): New function declaration. +* misc.c (GC_get_suspend_signal): New API function (only if +THREADS). + +* alloc.c (min_bytes_allocd): Multiply GC_free_space_divisor by +two if GC_incremental (instead of TRUE_INCREMENTAL). + +* sparc_mach_dep.S (GC_push_regs): Remove the reference. + +* os_dep.c (SIZE_T, PULONG_PTR): Remove. +* os_dep.c (ULONG_PTR): Replace with GC_ULONG_PTR (defined as GC +"word"); add the comment. +* os_dep.c (GetWriteWatch_type, detect_GetWriteWatch, +GC_gww_read_dirty): Prefix ULONG_PTR with "GC_". + +* win32_threads.c (THREAD_TABLE_SZ): Change back to a power-of-two +const value (for speed). +* win32_threads.c (THREAD_TABLE_INDEX): New macro. +* win32_threads.c (GC_new_thread, GC_lookup_thread_inner, +GC_delete_gc_thread, GC_delete_thread, GC_lookup_pthread): Use +THREAD_TABLE_INDEX instead of THREAD_TABLE_SZ. +* win32_threads.c (PTHREAD_MAP_HASH): Rename to PTHREAD_MAP_INDEX. + +* win32_threads.c (THREAD_TABLE_SZ): Make the const value prime. + +* backgraph.c: Remove apostrophe char from "#error". + +* doc/README.macros (GC_DISABLE_INCREMENTAL): Document. +* include/private/gcconfig.h (GC_DISABLE_INCREMENTAL): Recognize +new macro; implicitly define it if SMALL_CONFIG. +* alloc.c (GC_incremental, GC_timeout_stop_func): Check for +GC_DISABLE_INCREMENTAL instead of SMALL_CONFIG. +* include/private/gc_priv.h (GC_incremental, TRUE_INCREMENTAL, +GC_push_conditional): Likewise. +* mark.c (GC_push_next_marked_dirty, GC_push_selected, +GC_push_conditional, GC_block_was_dirty): Likewise. +* misc.c (GC_enable_incremental): Likewise. +* misc.c (GC_init): Likewise. + +* dyn_load.c (WIN32_LEAN_AND_MEAN): Guard with ifndef. +* misc.c (WIN32_LEAN_AND_MEAN): Likewise. +* os_dep.c (WIN32_LEAN_AND_MEAN): Likewise. +* allchblk.c (GC_allochblk_nth): Fix a minor typo (don't/doesn't) +in a comment. +* backgraph.c: Likewise. +* dyn_load.c (GC_register_dynamic_libraries): Likewise. +* extra/threadlibs.c (main): Likewise. +* pthread_support.c (pthread_join): Likewise. +* tests/test.c (main): Likewise. + +* mach_dep.c (GC_push_regs): Remove STATIC (just to catch +a duplicate symbol definition linker error). +* misc.c (GC_clear_stack_inner): Likewise. +* sparc_mach_dep.S (GC_push_regs): Comment out the reference. + +* include/private/gc_priv.h (GC_write_disabled): New variable +declaration (only if GC_ASSERTIONS and Win32 threads). +* misc.c (GC_write): Add assertion for GC_write_disabled value is +not on (only if THREADS). +* win32_threads.c (GC_write_disabled): New variable (only if +GC_ASSERTIONS and not Cygwin). +* win32_threads.c (GC_stop_world): Set and clear GC_write_disabled +(while holding GC_write_cs). + +* win32_threads.c (GC_please_stop): If DllMain-based thread +registration is not compiled in then define GC_please_stop as +a non-volatile variable for assertion only. +* win32_threads.c (GC_stop_world): Set and clear only if defined. +* win32_threads.c (GC_stop_world): Add the comment for GC_printf() +usage (while holding GC_write_cs). +* win32_threads.c (GC_delete_gc_thread): Likewise. +* os_dep.c (GC_remove_protection): Likewise. + +* pthread_support.c (GC_inner_start_routine): Join 3 sequential +GC_printf() calls into a single one (for DEBUG_THREADS). + +* include/private/gc_priv.h (GC_total_stacksize): New variable +declaration (only if THREADS). +* alloc.c (GC_total_stacksize): New variable (only if THREADS). +* alloc.c (min_bytes_allocd): Calculate stack_size using +GC_stackbottom only in the single-threaded case; otherwise use +GC_total_stacksize; print GC_total_stacksize value if +DEBUG_THREADS. +* darwin_stop_world.c (GC_push_all_stacks): Use "%p" printf type +specifier for lo/hi values (instead of "%lx"). +* darwin_stop_world.c (GC_push_all_stacks): Use +GC_push_all_stack_frames() instead of GC_push_all_stack(). +* darwin_stop_world.c (GC_push_all_stacks): Recalculate +GC_total_stacksize value. +* pthread_stop_world.c (GC_push_all_stacks): Likewise. +* win32_threads.c (GC_push_all_stacks): Likewise. +* win32_threads.c (GC_push_stack_for): Pass "me" argument; return +stack size; don't check for non-zero value of thread->stack_base. +* win32_threads.c (GC_push_all_stacks): Don't call +GC_push_stack_for() and don't check for "t->id == me" if +thread->stack_base is zero. + +* dyn_load.c (GC_dump_meminfo): Prefix "%lx" printf type specifier +with "0x". +* os_dep.c (PROTECT): Likewise. +* win32_threads.c (GC_mark_thread_local_free_lists): Cast p->id to +int (to match printf type specifier). + +* tests/test.c (check_heap_stats): Take into account the unmapped +memory size when checking for "Unexpected heap growth"; remove +FIXME. + +* alloc.c: Revert last change. + +* include/private/gcconfig.h (STACKBOTTOM): Add a presence check +for eCos/NOSYS. +* misc.c (GC_write): Comment out _Jv_diag_write() call (since no +longer defined in GCJ). + +* os_dep.c (brk): Rename to ecos_gc_brk. + +* alloc.c (min_bytes_allocd): Use GC_stackbottom value to compute +stack_size even if THREADS. +* doc/README.macros (DEBUG_THREADS): Document. +* pthread_support.c (DEBUG_THREADS): Remove the commented out +definition. +* win32_threads.c (DEBUG_WIN32_THREADS): Remove duplicate +definition. +* win32_threads.c: Include errno.h (except for WinCE). +* win32_threads.c (GC_win32_start_inner): Copy "start" and "param" +to local variables, and free "arg" parameter before "start" +invocation. +* win32_threads.c (GC_beginthreadex): Set errno to EAGAIN on error +(instead of calling SetLastError(ERROR_NOT_ENOUGH_MEMORY)). +* win32_threads.c (GC_beginthreadex): Return 0 on error (instead +of -1). + +* darwin_stop_world.c (GC_darwin_register_mach_handler_thread): +Use GC_INNER for the function definition. +* include/private/darwin_stop_world.h +(GC_darwin_register_mach_handler_thread): Remove the prototype. +* os_dep.c (GC_darwin_register_mach_handler_thread): Use GC_INNER +for the function prototype. +* include/private/gc_priv.h (NDEBUG): Explicitly define if +NO_DEBUGGING and not GC_ASSERTIONS (before the standard headers +inclusion). + +* include/private/gcconfig.h: Move DebugBreak() workaround (for +x86mingw32ce toolchain) to gc_priv.h (after windows.h inclusion). + +* allchblk.c (GC_unmap_old, GC_merge_unmapped, GC_allochblk, +GC_freehblk): Use GC_INNER for the function definition. +* alloc.c (GC_never_stop_func, GC_should_collect, +GC_try_to_collect_inner, GC_collect_a_little_inner, +GC_set_fl_marks, GC_add_to_our_memory, GC_add_to_heap, +GC_expand_hp_inner, GC_collect_or_expand, GC_allocobj): Likewise. +* backgraph.c (GC_build_back_graph, GC_traverse_back_graph): +Likewise. +* blacklst.c (GC_default_print_heap_obj_proc, GC_bl_init, +GC_promote_black_lists, GC_unpromote_black_lists, +GC_add_to_black_list_normal, GC_add_to_black_list_stack, +GC_is_black_listed): Likewise. +* darwin_stop_world.c (GC_push_all_stacks, GC_push_all_stacks, +GC_stop_init, GC_stop_world, GC_start_world): Likewise. +* dbg_mlc.c (GC_has_other_debug_info, GC_store_back_pointer, +GC_marked_for_finalization, GC_generate_random_backtrace_no_gc, +GC_store_debug_info, GC_start_debugging, +GC_debug_generic_malloc_inner, +GC_debug_generic_malloc_inner_ignore_off_page, +GC_debug_malloc_uncollectable, GC_debug_free_inner): Likewise. +* dyn_load.c (GC_register_dynamic_libraries, +GC_register_main_static_data, GC_init_dyld): Likewise. +* finalize.c (GC_push_finalizer_structures, GC_finalize, +GC_notify_or_invoke_finalizers, GC_print_finalization_stats): +Likewise. +* gcj_mlc.c (GC_core_gcj_malloc): Likewise. +* headers.c (GC_find_header, GC_header_cache_miss, +GC_scratch_alloc, GC_init_headers, GC_install_header, +GC_install_counts, GC_remove_header, GC_remove_counts, +GC_next_used_block, GC_prev_block): Likewise. +* mach_dep.c (GC_with_callee_saves_pushed): Likewise. +* malloc.c (GC_collect_or_expand, GC_alloc_large, +GC_generic_malloc_inner, GC_generic_malloc_inner_ignore_off_page, +GC_core_malloc_atomic, GC_core_malloc, GC_free_inner): Likewise. +* mallocx.c (GC_generic_malloc_ignore_off_page): Likewise. +* mark.c (GC_collection_in_progress, GC_clear_hdr_marks, +GC_set_hdr_marks, GC_set_mark_bit, GC_clear_mark_bit, +GC_clear_marks, GC_initiate_gc, GC_mark_some, +GC_mark_stack_empty, GC_invalidate_mark_state, +GC_signal_mark_stack_overflow, GC_mark_from, GC_help_marker, +GC_mark_init, GC_push_all, GC_push_conditional, +GC_mark_and_push_stack, GC_push_all_eager, GC_push_all_stack): +Likewise. +* mark_rts.c (GC_is_static_root, GC_roots_present, GC_approx_sp, +GC_exclude_static_roots_inner, GC_push_all_register_frames, +GC_push_all_stack_frames, GC_cond_register_dynamic_libraries, +GC_push_roots): Likewise. +* misc.c (GC_extend_size_map, GC_clear_stack, GC_err_write): +Likewise. +* new_hblk.c (GC_build_fl, GC_new_hblk): Likewise. +* obj_map.c (GC_register_displacement_inner, GC_add_map_entry, +GC_initialize_offsets): Likewise. +* os_dep.c (GC_get_maps, GC_parse_map_entry, GC_text_mapping, +GC_init_linux_data_start, GC_init_netbsd_elf, GC_setpagesize, +GC_set_and_save_fault_handler, GC_setup_temporary_fault_handler, +GC_reset_fault_handler, GC_get_register_stack_base, GC_init_win32, +GC_add_current_malloc_heap, GC_is_heap_base, GC_unmap, GC_remap, +GC_unmap_gap, GC_push_all_stacks, GC_gww_dirty_init, +GC_dirty_init, GC_read_dirty, GC_page_was_dirty, +GC_page_was_ever_dirty, GC_remove_protection, +GC_write_fault_handler, GC_mprotect_stop, GC_mprotect_resume, +GC_save_callers, GC_print_callers): Likewise. +* pthread_stop_world.c (GC_push_all_stacks, GC_stop_world, +GC_start_world, GC_stop_init): Likewise. +* pthread_support.c (GC_mark_thread_local_free_lists, +GC_lookup_thread, GC_reset_finalizer_nested, +GC_check_finalizer_nested, GC_segment_is_thread_stack, +GC_greatest_stack_base_below, GC_thr_init, GC_init_parallel, +GC_do_blocking_inner, GC_lock, GC_acquire_mark_lock, +GC_release_mark_lock, GC_wait_for_reclaim, GC_notify_all_builder, +GC_wait_marker, GC_notify_all_marker): Likewise. +* reclaim.c (GC_print_all_errors, GC_block_empty, +GC_reclaim_generic, GC_start_reclaim, GC_continue_reclaim, +GC_reclaim_all): Likewise. +* thread_local_alloc.c (GC_init_thread_local, +GC_destroy_thread_local, GC_mark_thread_local_fls_for): Likewise. +* win32_threads.c (GC_reset_finalizer_nested, +GC_check_finalizer_nested, GC_do_blocking_inner, GC_stop_world, +GC_start_world, GC_push_all_stacks, GC_get_next_stack, +GC_acquire_mark_lock, GC_release_mark_lock, GC_wait_for_reclaim, +GC_notify_all_builder, GC_wait_marker, GC_notify_all_marker, +GC_thr_init, GC_init_parallel, GC_lock, +GC_mark_thread_local_free_lists): Likewise. +* alloc.c (GC_add_current_malloc_heap, GC_build_back_graph, +GC_traverse_back_graph): Use GC_INNER for the function prototype. +* darwin_stop_world.c (GC_mprotect_stop, GC_mprotect_resume): +Likewise. +* dbg_mlc.c (GC_default_print_heap_obj_proc): Likewise. +* dyn_load.c (GC_parse_map_entry, GC_get_maps, +GC_segment_is_thread_stack, GC_roots_present, GC_is_heap_base, +GC_get_next_stack): Likewise. +* finalize.c (GC_reset_finalizer_nested, +GC_check_finalizer_nested): Likewise. +* gcj_mlc.c (GC_start_debugging): Likewise. +* include/private/dbg_mlc.h (GC_save_callers, GC_print_callers, +GC_has_other_debug_info, GC_store_debug_info): Likewise. +* include/private/gc_hdrs.h (GC_header_cache_miss): Likewise. +* include/private/gc_locks.h (GC_lock): Likewise. +* include/private/gc_pmark.h (GC_signal_mark_stack_overflow, +GC_mark_from): Likewise. +* include/private/pthread_support.h (GC_lookup_thread, +GC_stop_init): Likewise. +* include/private/thread_local_alloc.h (GC_init_thread_local, +GC_destroy_thread_local, GC_mark_thread_local_fls_for): Likewise. +* malloc.c (GC_extend_size_map, GC_text_mapping): Likewise. +* mark.c (GC_page_was_ever_dirty): Likewise. +* mark_rts.c (GC_mark_thread_local_free_lists): Likewise. +* misc.c (GC_register_main_static_data, GC_init_win32, +GC_setpagesize, GC_init_linux_data_start, +GC_set_and_save_fault_handler, GC_init_dyld, GC_init_netbsd_elf, +GC_do_blocking_inner): Likewise. +* os_dep.c (GC_greatest_stack_base_below): Likewise. +* win32_threads.c (GC_write_fault_handler, GC_gww_dirty_init): +Likewise. +* include/private/gc_priv.h: Likewise. +* include/private/gc_priv.h (GC_INNER): Update the comment. +* doc/README.macros (GC_DLL): Update. + +* alloc.c (GC_collection_in_progress): Move the prototype to +gc_priv.h. +* gc_dlopen.c (GC_collection_in_progress): Likewise. +* pthread_support.c (GC_collection_in_progress): Likewise. +* misc.c (GC_init_parallel): Likewise. +* pthread_support.c (GC_init_parallel): Likewise. +* win32_threads.c (GC_init_parallel): Likewise. +* darwin_stop_world.c (GC_thr_init): Likewise. +* misc.c (GC_thr_init): Likewise. +* pthread_stop_world.c (GC_thr_init): Likewise. +* pthread_support.c (GC_thr_init): Likewise. +* blacklst.c (GC_clear_bl, GC_copy_bl, +GC_number_stack_black_listed): Make STATIC. +* dbg_mlc.c (GC_print_obj, GC_make_closure, +GC_debug_invoke_finalizer): Likewise. +* malloc.c (GC_alloc_large_and_clear): Likewise. +* mark.c (GC_push_selected, GC_push_marked1, GC_push_marked2, +GC_push_marked4, GC_push_marked, GC_push_next_marked, +GC_push_next_marked_dirty, GC_push_next_marked_uncollectable): +Likewise. +* misc.c (GC_clear_stack_inner): Likewise. +* os_dep.c (GC_repeat_read, GC_default_push_other_roots): Likewise. +* darwin_stop_world.c (FindTopOfStack): Make static; define only +if not DARWIN_DONT_PARSE_STACK. +* dbg_mlc.c (GC_debug_free_inner): Define only if DBG_HDRS_ALL. +* dyn_load.c (GC_repeat_read): Remove unused prototype. +* include/private/gc_pmark.h (GC_find_start): Likewise. +* misc.c (GC_read, GC_register_finalizer_no_order): Likewise. +* dyn_load.c (GC_segment_is_thread_stack): Add prototype (only if +THREADS). +* dyn_load.c (GC_register_main_static_data): Define only if +DYNAMIC_LOADING. +* finalize.c (GC_enqueue_all_finalizers): Remove unnecessary tail +"return" statement. +* gc_dlopen.c (GC_SOLARIS_THREADS): Don't recognize (since implies +GC_PTHREADS). +* include/gc.h: Fix a typo. +* include/gc_inline.h (GC_ASSERT): Define (if not defined) since +the header is public. +* include/gc_inline.h (GC_generic_malloc_many): New public +function declaration. +* mallocx.c (GC_generic_malloc_many): Make public. +* include/private/gc_priv.h (GC_INNER): Use visibility attribute +(if available). +* include/private/gc_priv.h (GC_EXTERN): Define using GC_INNER. +* include/private/gc_priv.h: Include atomic_ops.h if THREADS and +MPROTECT_VDB. +* os_dep.c: Don't include atomic_ops.h +* win32_threads.c: Likewise. +* include/private/gc_priv.h (GC_push_selected, GC_push_regs, +GC_push_marked, GC_number_stack_black_listed, +GC_alloc_large_and_clear, GC_reclaim_or_delete_all, +GC_generic_malloc_many, GC_make_closure, +GC_debug_invoke_finalizer, GC_print_obj, GC_page_was_ever_dirty): +Remove the prototype. +* mark.c (GC_page_was_ever_dirty): Add prototype (only if +PROC_VDB). +* include/private/gc_priv.h (GC_push_next_marked_dirty, +GC_push_next_marked, GC_push_next_marked_uncollectable): Move +the prototype to mark.c. +* include/private/gc_priv.h (GC_is_static_root): Declare only if +not THREADS. +* include/private/gc_priv.h (GC_free_inner): Declare only if +THREADS. +* include/private/gc_priv.h (GC_debug_free_inner): Declare only if +THREADS and DBG_HDRS_ALL. +* include/private/gc_priv.h (GC_markers): Declare GC_markers only +if PARALLEL_MARK. +* include/private/gc_priv.h (GC_register_main_static_data): Move +the prototype to misc.c. +* mach_dep.c (GC_push_regs): Make STATIC; define only along with +HAVE_PUSH_REGS definition. +* mach_dep.c (GC_clear_stack_inner): Replace K&R-style function +definition with the ANSI C one. +* mark.c (GC_started_thread_while_stopped): Declared only if not +GNU C. +* win32_threads.c (GC_started_thread_while_stopped): Don't define +if GNU C. +* mark.c (GC_mark_from): Avoid unbalanced brackets in +#if-#else-#endif blocks. +* mark_rts.c (GC_is_static_root): Define only if not THREADS. +* os_dep.c (GC_get_stack_base): Make public (for OpenBSD). +* os_dep.c (GC_page_was_ever_dirty): Comment out the function +except for PROC_VDB. +* tests/test.c (main): Don't reference GC_print_obj, +GC_make_closure, GC_debug_invoke_finalizer, +GC_page_was_ever_dirty, GC_is_fresh (in GC_noop). +* thread_local_alloc.c: Don't include "gc_inline.h". +* win32_threads.c (GC_write_fault_handler): Declare only if +MPROTECT_VDB. + +* allchblk.c (DEBUG): Remove macro (since unused). +* allchblk.c: Include private/gc_priv.h before other includes and +definitions. +* alloc.c: Likewise. +* gc_dlopen.c: Likewise. +* headers.c: Likewise. +* mallocx.c: Likewise. +* mark_rts.c: Likewise. +* new_hblk.c: Likewise. +* reclaim.c: Likewise. +* mark.c: Include private/gc_pmark.h before other includes. +* misc.c: Likewise. +* dyn_load.c (_GNU_SOURCE): Move the definition to gc_priv.h. +* pthread_support.c (_USING_POSIX4A_DRAFT10): Likewise. +* pthread_support.c (_POSIX4A_DRAFT10_SOURCE): Remove (since +already defined in gc_config_macros.h). +* dyn_load.c (GC_init_dyld): Remove parameter cast for +_dyld_register_func_for_add_image() and +_dyld_register_func_for_remove_image(); add the comment about +possible warnings; add FIXME for the deprecated +_dyld_bind_fully_image_containing_address(). +* include/private/gc_priv.h: Include gc.h before the standard +headers inclusion. +* tests/test.c: Likewise. +* include/private/gcconfig.h (DebugBreak): Update the comment. +* typd_mlc.c (ED_INITIAL_SIZE): Remove ';'. + +* configure.ac (openbsd): Define GC_OPENBSD_THREADS. +* configure.ac: Add AM_CONDITIONAL(OPENBSD_THREADS). +* configure.ac: Add sparc-openbsd case. +* doc/README.macros (GC_NETBSD_THREADS, GC_OPENBSD_THREADS): +Document. +* tests/test.c (main): Handle OpenBSD case. +* include/private/pthread_stop_world.h: Likewise. +* extra/threadlibs.c (main): Replace K&R-style function definition +with the ANSI C one. +* extra/threadlibs.c (main): Handle GC_OPENBSD_THREADS case. +* dyn_load.c (OPENBSD): Recognize (similar to NETBSD). +* include/gc_config_macros.h (GC_SOLARIS_THREADS): Recognize; +define it for OpenBSD. +* include/gc_pthread_redirects.h (GC_pthread_sigmask, +pthread_sigmask): Don't declare and redefine for OpenBSD. +* include/private/gcconfig.h: Handle OpenBSD (on arm, sh, i386, +amd64, powerpc). +* mach_dep.c (NO_GETCONTEXT): Likewise. +* include/private/pthread_stop_world.h (thread_stop_info): Don't +define last_stop_count field if OpenBSD. +* misc.c (GC_init_dyld): Add declaration (if NetBSD). +* misc.c (GC_init): Don't call GC_init_netbsd_elf() for OpenBSD. +* os_dep.c (GC_init_netbsd_elf): Don't define for OpenBSD. +* os_dep.c (old_segv_act, GC_jmp_buf_openbsd): New static variable +(only if OpenBSD). +* os_dep.c (GC_fault_handler_openbsd, GC_find_limit_openbsd, +GC_skip_hole_openbsd): New static function (only if OpenBSD). +* os_dep.c (GC_get_stack_base, GC_get_main_stack_base, +GC_register_data_segments): Define specially for OpenBSD case. +* os_dep.c (GC_fault_handler_lock): Initialize to +AO_TS_INITIALIZER (instead of 0). +* pthread_support.c (GC_allocate_lock): Likewise. +* pthread_stop_world.c (NSIG, GC_print_sig_mask, +GC_remove_allowed_signals, suspend_handler_mask, GC_stop_count, +GC_world_is_stopped, GC_retry_signals, SIG_THR_RESTART, +GC_suspend_ack_sem, GC_suspend_handler_inner, GC_suspend_handler, +GC_restart_handler): Don't define and use if OpenBSD. +* pthread_stop_world.c (GC_suspend_all, GC_stop_world, +GC_start_world): Handle OpenBSD case. +* pthread_stop_world.c (GC_stop_init): Define as empty if OpenBSD. +* pthread_support.c (pthread_sigmask): Don't undefine the macro and +don't define the wrapper function if OpenBSD. +* pthread_support.c (GC_thr_init): Handle OpenBSD case. + +* dyn_load.c: Move the inclusion of private/gc_priv.h below +definition of a feature macro (_GNU_SOURCE). + +* include/gc.h (REVEAL_POINTER): Remove redundant parentheses. +* include/gc.h (GC_HIDE_POINTER, GC_REVEAL_POINTER): New macros +(only if GC_I_HIDE_POINTERS). +* backgraph.c (GET_OH_BG_PTR): Prefix REVEAL_POINTER() with "GC_". +* dbg_mlc.c (GC_get_back_ptr_info): Likewise. +* finalize.c (GC_grow_table, GC_dump_finalization, GC_finalize, +GC_enqueue_all_finalizers): Likewise. +* backgraph.c (SET_OH_BG_PTR): Prefix HIDE_POINTER() with "GC_". +* finalize.c (GC_general_register_disappearing_link, +GC_unregister_disappearing_link, GC_register_finalizer_inner, +GC_finalize): Likewise. +* include/private/dbg_mlc.h (HIDE_BACK_PTR): Likewise. +* include/private/dbg_mlc.h (GC_I_HIDE_POINTERS): Define instead +of I_HIDE_POINTERS. +* include/private/gc_priv.h (GC_I_HIDE_POINTERS): Likewise. +* include/gc.h (_GC_H): Strip leading underscore. +* include/gc_backptr.h (_GC_H): Likewise. +* include/gc_gcj.h (_GC_H): Likewise. +* include/gc_mark.h (_GC_H): Likewise. +* include/gc_typed.h (_GC_TYPED_H, _GC_H): Likewise. +* include/javaxfc.h (_GC_H): Likewise. +* include/new_gc_alloc.h (__GC_SPECIALIZE): Likewise. +* include/private/dbg_mlc.h (_GC_H): Likewise. +* include/private/gc_priv.h (_GC_H): Likewise. + +* gc_cpp.cc: Include "gc_cpp.h" instead of . + +* include/private/gc_priv.h (GC_INNER): New macro (for GC-scope +variable definitions). +* include/private/gc_priv.h (GC_EXTERN): Update the comment. +* allchblk.c (GC_unmap_threshold): Define as GC_INNER. +* alloc.c (GC_incremental, GC_world_stopped, GC_n_heap_sects, +GC_n_memory, GC_fail_count): Likewise. +* blacklst.c (GC_black_list_spacing, GC_print_heap_obj): Likewise. +* gcj_mlc.c (GC_gcj_malloc_initialized, GC_gcjobjfreelist): Likewise. +* mach_dep.c (GC_save_regs_ret_val): Likewise. +* mark.c (GC_n_mark_procs, GC_obj_kinds, GC_n_kinds, +GC_mark_stack, GC_mark_stack_limit, GC_mark_stack_size, +GC_mark_stack_top, GC_mark_state, GC_mark_stack_too_small, +GC_mark_no, GC_markers): Likewise. +* mark_rts.c (GC_root_size, GC_push_typed_structures): Likewise. +* misc.c (GC_allocate_ml, GC_debugging_started, GC_check_heap, +GC_print_all_smashed, GC_print_back_height, GC_dump_regularly, +GC_backtraces, GC_force_unmap_on_gcollect, +GC_large_alloc_warn_interval, GC_is_initialized, GC_write_cs, +GC_current_warn_proc, GC_blocked_sp, GC_activation_frame): Likewise. +* os_dep.c (GC_page_size, GC_dont_query_stack_min, +GC_no_win32_dlls, GC_wnt, GC_sysinfo, GC_push_other_roots, +GC_dirty_maintained, GC_fault_handler_lock): Likewise. +* pthread_support.c (GC_allocate_ml, GC_lock_holder, +GC_need_to_lock, GC_thr_initialized, GC_threads, +GC_in_thread_creation, GC_collecting, GC_allocate_lock, +GC_mark_lock_holder): Likewise. +* reclaim.c (GC_bytes_found, GC_fl_builder_count, GC_have_errors): +Likewise. +* win32_threads.c (GC_allocate_ml, GC_lock_holder, +GC_need_to_lock, GC_mark_lock_holder, GC_collecting): Likewise. +* extra/gc.c (GC_INNER, GC_EXTERN): Define as STATIC. +* mach_dep.c (GC_with_callee_saves_pushed): Remove redundant {}. + +* include/private/gc_priv.h (GC_bytes_allocd, GC_objfreelist, +GC_aobjfreelist): Replace GC_EXTERN to extern for SEPARATE_GLOBALS +case (since they are not defined inside GC at present). +* include/private/gc_priv.h (GC_objects_are_marked): Remove the +declaration (since made static). +* mark.c (GC_objects_are_marked): Define as STATIC. +* win32_threads.c (GC_thr_initialized, GC_in_thread_creation): +Likewise. +* mark.c (GC_N_KINDS_INITIAL_VALUE): New macro (defined and used +to initialize GC_n_kinds). +* win32_threads.c (start_mark_threads): Adjust the comment. + +* alloc.c (GC_notify_full_gc): Use GC_INLINE for a tiny static +function. +* backgraph.c (pop_in_progress, GC_apply_to_each_object): Likewise. +* mark_rts.c (add_roots_to_index): Likewise. + +* extra/gc.c: New file. +* Makefile.am (EXTRA_DIST): Add "extra/gc.c". + +* misc.c (GC_log): Remove the declaration; move the definition (to +the place where it is used); make STATIC. +* misc.c (GC_init): Use GC_err_printf() instead of GC_log_printf() +to print open log failure. +* misc.c (GC_write): Don't abort on open log failure if the GC is +compiled with GC_PRINT_VERBOSE_STATS (useful for WinCE). + +* include/private/gcconfig.h (USE_MMAP): Guard with ifndef. + +* allchblk.c (GC_fail_count, GC_large_alloc_warn_interval): Move +the variable declaration to gc_priv.h. +* alloc.c (GC_bytes_found, GC_unmap_threshold, +GC_force_unmap_on_gcollect): Likewise. +* dyn_load.c (GC_no_win32_dlls, GC_wnt): Likewise. +* finalize.c (GC_fail_count): Likewise. +* include/private/gc_locks.h (GC_allocate_ml, GC_lock_holder, +GC_collecting, GC_mark_lock_holder, GC_need_to_lock): Likewise. +* include/private/gc_pmark.h (GC_n_mark_procs, GC_mark_stack_size, +GC_mark_stack_limit, GC_mark_stack_top, GC_mark_stack, +GC_mark_stack_too_small, GC_mark_state): Likewise. +* include/private/pthread_support.h (GC_threads, +GC_thr_initialized, GC_in_thread_creation): Likewise. +* mallocx.c (GC_bytes_found): Likewise. +* mark_rts.c (GC_save_regs_ret_val, GC_world_stopped): Likewise. +* misc.c (GC_unmap_threshold): Likewise. +* os_dep.c (GC_unmap_threshold): Likewise. +* pthread_support.c (GC_markers): Likewise. +* thread_local_alloc.c (GC_gcjobjfreelist, +GC_gcj_malloc_initialized, GC_gcj_kind): Likewise. +* win32_threads.c (GC_fault_handler_lock, GC_write_cs, +GC_dont_query_stack_min, GC_markers, GC_wnt): Likewise. +* include/private/gc_priv.h (GC_EXTERN): New macro (used mostly as +a tag for now); defined after "gcconfig.h" inclusion. +* include/private/gc_priv.h: Use GC_EXTERN instead of "extern" +keyword for most global variables. +* alloc.c (GC_copyright): Add the comment about the symbol +visibility. +* finalize.c (GC_fo_entries): Likewise. +* include/private/gc_priv.h (GC_print_stats): Likewise. +* misc.c (GC_quiet): Likewise. +* mallocx.c (GC_bytes_allocd_tmp): Make the volatile variable +STATIC. +* pthread_support.c (GC_threads): Add explicit zero initializer +(to make the variable definition differ from the declaration). + +* backgraph.c (GC_quiet): Remove the declaration (not needed +anymore since gc_priv.h is always included). +* checksums.c (GC_quiet): Likewise. +* gcj_mlc.c (GC_quiet): Likewise. +* headers.c (GC_hdr_cache_hits, GC_hdr_cache_misses): Add the +comment. +* include/private/gc_hdrs.h (GC_hdr_cache_hits, +GC_hdr_cache_misses): Likewise. +* mark.c (GC_first_nonempty): Make the volatile variable STATIC. +* pthread_stop_world.c (GC_stop_count, GC_world_is_stopped): +Likewise. +* win32_threads.c (GC_please_stop, GC_max_thread_index, +GC_mark_mutex_waitcnt): Likewise. + +* pthread_support.c (GC_USE_LD_WRAP): Fix a typo (swapped 'L' and +'D') in the name. + +* gc_dlopen.c (GC_MUST_RESTORE_REDEFINED_DLOPEN): Define if dlopen +redirection is turned off; turn it on later when dlopen real +symbol is no longer needed (according to the comment and the same +as in dyn_load.c). +* gc_dlopen.c (WRAP_FUNC, REAL_FUNC): Rename to WRAP_DLFUNC and +REAL_DLFUNC, respectively (to have unique names since the +definitions may differ from that of the similar ones in +pthread_support.c). +* mark.c (source): Undefine the macro when no longer needed. +* os_dep.c (handler): Rename the type to GC_fault_handler_t (to +have the unique name across the project). +* os_dep.c (STAT_BUF_SIZE, STAT_READ); Guard with ifndef; add the +comment. +* pthread_support.c (STAT_BUF_SIZE, STAT_READ): Likewise. +* os_dep.c (sbrk): Undo sbrk() redirection (for ECOS) when no +longer needed. + +* pthread_stop_world.c (pthread_sigmask): Undefine before using +in GC_print_sig_mask() (only if DEBUG_THREADS); add the comment. +* win32_threads.c (dlopen, _beginthread): Don't undefine (since +neither redirected nor used here). +* win32_threads.c (GC_Thread_Rep): Rename "table_management" to +"tm" for short; remove "tm_" prefix. +* win32_threads.c (in_use, next): Don't define the macros; use +tm.in_use and tm.next fields, respectively (to ease debugging). +* win32_threads.c (HASH): Rename to PTHREAD_MAP_HASH (to have +unique name across the project). + +* include/private/gc_priv.h (I_HIDE_POINTERS): Define before gc.h +inclusion. +* include/private/gc_pmark.h (I_HIDE_POINTERS): Define if gc.h is +not included yet. +* finalize.c (I_HIDE_POINTERS): Don't define. +* include/private/dbg_mlc.h (I_HIDE_POINTERS): Likewise. +* misc.c (I_HIDE_POINTERS): Likewise. +* include/private/dbg_mlc.h (HIDE_POINTER, REVEAL_POINTER, +GC_hidden_pointer): Don't define if HIDE_POINTER is undefined. +* include/private/gc_pmark.h: Remove the comment about gc_priv.h +inclusion order. + +* dyn_load.c: Include gc_priv.h before using configuration +information (MACOS). +* dyn_load.c (GC_must_restore_redefined_dlopen): Rename to +GC_MUST_RESTORE_REDEFINED_DLOPEN. + +* backgraph.c (SET_OH_BG_PTR): Place outermost parenthesis +properly. +* darwin_stop_world.c: Replace "if DEBUG_THREADS" with +"ifdef DEBUG_THREADS". +* pthread_stop_world.c: Likewise. +* pthread_support.c: Likewise. +* include/gc_inline.h: Guard with GC_INLINE_H. + +* alloc.c (GC_copyright): Define as const. +* alloc.c (GC_collect_at_heapsize): Replace "static" with "STATIC" +(since the name starts with "GC_" prefix). +* dbg_mlc.c (GC_describe_type_fns): Likewise. +* dyn_load.c (GC_FirstDLOpenedLinkMap, +GC_register_dynlib_callback, GC_dyld_sections, +GC_dyld_name_for_hdr, GC_dyld_image_add, GC_dyld_image_remove): +Likewise. +* malloc.c (GC_libpthread_start, GC_libpthread_end, +GC_libld_start, GC_libld_end): Likewise. +* mark_rts.c (GC_remove_root_at_pos, GC_rebuild_root_index): +Likewise. +* os_dep.c (GC_gww_read_dirty, GC_gww_page_was_dirty, +GC_gww_page_was_ever_dirty, GC_mprotect_thread_notify, +GC_mprotect_thread_reply, GC_mprotect_thread, GC_darwin_sigbus, +GC_forward_exception): Likewise. +* pthread_support.c (GC_syms_initialized): Likewise. +* typd_mlc.c (GC_push_typed_structures_proc): Likewise. +* win32_threads.c (GC_win32_dll_threads, +GC_register_my_thread_inner, GC_lookup_pthread, GC_get_stack_min, +GC_waitForSingleObjectInfinite): Likewise. +* darwin_stop_world.c (GC_use_mach_handler_thread, +GC_use_mach_handler_thread, GC_mach_threads_count): Replace +"static" with "STATIC" and add zero initializer. +* os_dep.c (GC_task_self, GC_ports, GC_mprotect_state, +GC_sigbus_count): Likewise. +* headers.c (free_hdr): Replace "static" with GC_INLINE. +* misc.c (GC_tmp): Rename static variable to fwrite_gc_res. +* os_dep.c (memory): Rename static variable to ecos_gc_memory. +* os_dep.c (async_set_pht_entry_from_index): Make static (for +MPROTECT_VDB case). +* pthread_support.c (GC_real_pthread_create, +GC_real_pthread_sigmask, GC_real_pthread_join, +GC_real_pthread_detach, GC_init_real_syms): Use REAL_FUNC() macro +for static GC_real_XXX symbols. +* win32_threads.c (GC_may_be_in_stack): Remove "GC_" prefix. + +* alloc.c (GC_finish_collection): Replace getenv() with GETENV(). +* dyn_load.c (GC_init_dyld): Likewise. +* os_dep.c (GC_print_callers): Likewise. +* dyn_load.c (GC_dyld_name_for_hdr): Cast _dyld_get_image_name() +result (since it's always of "struct mach_header" type). +* dyn_load.c (GC_init_dyld): Cast GC_dyld_image_add and +GC_dyld_image_remove (to always have the first argument of +"struct mach_header" pointer type). + +* configure.ac: Add threads support for OpenBSD case (threads may +not work correctly for it). + +* acinclude.m4: Rename to m4/gc_set_version.m4. +* m4/libtool.m4: Delete the file. +* m4/lt~obsolete.m4: Likewise. +* m4/ltoptions.m4: Likewise. +* m4/ltsugar.m4: Likewise. +* m4/ltversion.m4: Likewise. + +* include/private/gcconfig.h: Define DebugBreak() as _exit(-1) for +x86mingw32ce toolchain to workaround the incorrect DebugBreak() +declaration in winbase.h (the workaround would turn into a no-op +when DebugBreak() will be defined as a macro in the toolchain). + +* include/private/gcconfig.h: Recognize __i386__ if WinCE (for +x86mingw32ce toolchain). +* include/private/gcconfig.h (NO_GETENV): Don't define for CeGCC +toolchain (or if already defined). +* include/private/gcconfig.h (NO_GETENV_WIN32): New macro (always +defined for WinCE or if NO_GETENV is defined). +* misc.c (GC_CreateLogFile): Use NO_GETENV_WIN32 macro instead of +NO_GETENV one. + +* configure.ac: Add AC_CONFIG_MACRO_DIR([m4]). +* Makefile.am: Add "ACLOCAL_AMFLAGS = -I m4". +* libtool.m4: Remove. +* m4/libtool.m4: New file (generated). +* m4/lt~obsolete.m4: Likewise. +* m4/ltoptions.m4: Likewise. +* m4/ltsugar.m4: Likewise. +* m4/ltversion.m4: Likewise. + +* include/gc.h (GC_UNDERSCORE_STDCALL): Recognize new macro; +prefix GC_CreateThread and GC_ExitThread with '_' if defined. +* doc/README.macros (GC_UNDERSCORE_STDCALL): Document. + +* alloc.c (GC_collect_or_expand): Add "retry" argument; add the +comments; don't use "default" stop_func on a retry if +GC_dont_expand. +* alloc.c (GC_allocobj): Pass "retry" argument to +GC_collect_or_expand(). +* malloc.c (GC_alloc_large): Likewise. +* include/private/gc_priv.h (GC_collect_or_expand): Move the +declaration to malloc.c; add "retry" argument. + +* alloc.c (GC_start_call_back): Move the variable definition from +misc.c. +* include/private/gc_priv.h (GC_start_call_back): Remove the +declaration. +* alloc.c (GC_notify_full_gc): Remove unnecessary cast of 0. +* alloc.c (GC_try_to_collect_inner): Also call stop_func at the +beginning of the function. +* include/gc.h (GC_try_to_collect): Refine the comment about +stop_func. + +* alloc.c (GC_default_stop_func, GC_try_to_collect_general, +GC_gcollect): Add the comment. +* alloc.c (GC_try_to_collect_general): Move the assertion on +stop_func != 0 to GC_try_to_collect(). +* alloc.c (GC_try_to_collect_general): If stop_func == 0 then use +GC_default_stop_func instead (holding the lock). +* alloc.c (GC_gcollect): Pass 0 as stop_func instead of +GC_default_stop_func (to prevent data races). + +* Makefile.direct: Move "define arguments" documentation to +doc/README.macros; add reference to doc/README.macros. +* Makefile.dj: Change the documentation reference to +doc/README.macros. +* README.QUICK: Likewise. +* configure.ac: Likewise. +* allchblk.c: Remove unnecessary "-D" from the comment. +* doc/README.macros: Likewise. +* README.environment: Likewise. +* include/gc.h: Likewise. +* include/gc_inline.h: Likewise. +* include/private/gcconfig.h: Likewise. +* README.QUICK: Fix a typo. + +* misc.c (GC_CreateLogFile): Use FILE_ATTRIBUTE_NORMAL for +CreateFile(); don't immediately flush every write if very verbose. + +* doc/README.win32: Replace ".exe.log" to ".gc.log". +* doc/README.win64: Likewise. +* doc/README.win64: Fix a typo. +* misc.c (GC_CreateLogFile): Strip executable file extension for +the log file; use ".gc.log" extension (instead of ".log"). + +* include/gc_config_macros.h: Avoid the redefinition of +GC_xxx_THREADS macros. + +* alloc.c (GC_try_to_collect_general): Change the type of "result" +local variable to GC_bool. + +* include/gc_config_macros.h: Use old behavior for FreeBSD and +NetBSD platform detection code (check that other GC_xxx_THREADS +are undefined); add FIXME. + +* include/gc_config_macros.h: Rearrange the platform detection +code (GC_WIN32_PTHREADS implies GC_WIN32_THREADS; define +GC_THREADS first if GC_XXX_THREADS already set; define proper +GC_XXX_THREADS if GC_THREADS; define GC_PTHREADS in a single +place; define _REENTRANT if posix threads except for Win32). + +* alloc.c (GC_try_to_collect_general): New function (move the code +from GC_try_to_collect, pass force_unmap argument). +* alloc.c (GC_try_to_collect, GC_gcollect): Call +GC_try_to_collect_general(). +* alloc.c (GC_gcollect_and_unmap): New public function. +* include/gc.h (GC_gcollect_and_unmap): New function declaration. +* tests/test.c (window_proc): Call GC_gcollect_and_unmap() on +WM_HIBERNATE event (instead of GC_set_force_unmap_on_gcollect() +and GC_gcollect()). + +* include/gc.h (GC_allow_register_threads, GC_register_my_thread, +GC_unregister_my_thread, GC_malloc_many): Refine the comment. +* include/gc.h (GC_malloc_many, GC_NEXT): Declare unconditionally +(that is, don't depend on GC_THREADS macro). +* include/gc.h: Don't check for __CYGWIN32__ and __CYGWIN__ along +with a check for GC_PTHREADS (since the former implies the +latter). + +* include/gc.h (GC_SOLARIS_THREADS): Don't check for. +* include/gc.h (GC_MIN, GC_MAX): Don't define. +* mallocx.c (GC_malloc_many): Add comment to #endif. + +* configure.ac: Drop the subdir-objects Automake option, since +it's incompatible with picking source files from libatomic_ops. + +* allchblk.c (GC_fail_count, GC_large_alloc_warn_interval): Add +"extern" keyword to a global variable declaration (some compilers +require it). +* alloc.c (GC_bytes_found, GC_unmap_threshold, +GC_force_unmap_on_gcollect): Likewise. +* dyn_load.c (GC_no_win32_dlls, GC_wnt): Likewise. +* finalize.c (GC_fail_count): Likewise. +* include/private/gc_hdrs.h (GC_hdr_cache_hits, +GC_hdr_cache_misses): Likewise. +* mallocx.c (GC_bytes_found): Likewise. +* mark_rts.c (GC_save_regs_ret_val, GC_world_stopped): Likewise. +* misc.c (GC_unmap_threshold): Likewise. +* os_dep.c (GC_unmap_threshold, GC_old_allocator): Likewise. +* pthread_support.c (GC_markers): Likewise. +* thread_local_alloc.c (GC_gcjobjfreelist, +GC_gcj_malloc_initialized, GC_gcj_kind): Likewise. +* win32_threads.c (GC_fault_handler_lock, GC_write_cs, +GC_dont_query_stack_min, GC_markers, GC_wnt): Likewise. + +* tests/huge_test.c: Define GC_IGNORE_WARN (if not defined) to +suppress misleading GC "Out of Memory!" warning printed on every +GC_MALLOC(LONG_MAX) call. +* tests/huge_test.c: Include "gc.h" instead of . +* tests/huge_test.c (main): Replace K&R-style function definition +with the ANSI C one. + +* dyn_load.c (GC_register_dynamic_libraries): Always use +lpMaximumApplicationAddress value for WinCE (even for old +versions). +* os_dep.c (VER_PLATFORM_WIN32_CE): Define if not in winbase.h. +* os_dep.c (GC_dont_query_stack_min): New global variable (only if +WinCE and THREADS). +* os_dep.c (GC_setpagesize): Adjust lpMaximumApplicationAddress +for WinCE (prior to version 6) if not _WIN32_WCE_EMULATION; set +GC_dont_query_stack_min for older WinCE (prior to version 5). +* win32_threads.c (GC_dont_query_stack_min): Declare. +* win32_threads.c (GC_get_stack_min): Rename the macro to +GC_wince_evaluate_stack_min for WinCE; update the comment. +* win32_threads.c (GC_push_stack_for, GC_get_next_stack): Use +GC_wince_evaluate_stack_min() instead of GC_get_stack_min() for +WinCE and don't update thread's last_stack_min value (only if +GC_dont_query_stack_min). +* win32_threads.c (GC_push_stack_for): Skip assertion for WinCE if +GC_dont_query_stack_min (since the evaluated stack_min value may +be incorrect if the stack is bigger than 64 KiB). + +* gc_dlopen.c (GC_dlopen): Add function redirector (only if +GC_USE_LD_WRAP). +* include/gc.h: Include "gc_pthread_redirects.h" even if +GC_USE_LD_WRAP or GC_NO_THREAD_REDIRECTS. +* include/gc_pthread_redirects.h (GC_PTHREAD_REDIRECTS_H): Don't +define and check for (since included only from gc.h). +* include/gc_pthread_redirects.h: Declare "GC_" symbols even if +GC_USE_LD_WRAP or GC_NO_THREAD_REDIRECTS. +* include/gc_pthread_redirects.h: Include signal.h only to get +sigset_t definition. + +* Makefile.direct: Document GC_REGISTER_MEM_PRIVATE. +* mark_rts.c (GC_is_tmp_root): Define also for WinCE unless +NO_DEBUGGING (that is, replace _WIN32_WCE_EMULATION with MSWINCE). +* os_dep.c (GC_sysinfo): Remove explicit global variable +initialization to "{0}" (revert back the previous change) since it +might produce a warning. + +* allchblk.c (GC_large_alloc_warn_interval): Move declaration from +gc_priv.h. +* allchblk.c (GC_large_alloc_warn_suppressed): Move definition +from misc.c; define as STATIC. +* include/private/gc_priv.h (GC_large_alloc_warn_interval, +GC_large_alloc_warn_suppressed): Remove declaration. +* alloc.c (GC_bytes_found): Add "defined in" comment. +* mallocx.c (GC_bytes_found): Likewise. +* misc.c (GC_unmap_threshold): Likewise. +* os_dep.c (GC_old_allocator): Likewise. +* pthread_support.c (GC_markers): Likewise. +* thread_local_alloc.c (GC_gcjobjfreelist, +GC_gcj_malloc_initialized, GC_gcj_kind): Likewise. +* win32_threads.c (GC_markers): Likewise. +* alloc.c (GC_start_time): Explicitly initialize to 0 or NULL (to +be distinctive from a variable declaration). +* backgraph.c (GC_max_height, GC_deepest_obj): Likewise. +* blacklst.c (GC_old_normal_bl, GC_incomplete_normal_bl, +GC_old_stack_bl, GC_incomplete_stack_bl): Likewise. +* checksums.c (GC_faulted, GC_n_dirty_errors, +GC_n_faulted_dirty_errors, GC_n_changed_errors, GC_n_clean, +GC_n_dirty, GC_bytes_in_used_blocks): Likewise. +* dbg_mlc.c (GC_smashed): Likewise. +* finalize.c (GC_old_dl_entries): Likewise. +* gcj_mlc.c (GC_gcj_kind, GC_gcj_debug_kind, GC_gcjobjfreelist, +GC_gcjdebugobjfreelist): Likewise. +* mach_dep.c (GC_save_regs_ret_val): Likewise. +* mark.c (GC_n_rescuing_pages, GC_mark_stack, GC_mark_stack_limit, +GC_mark_stack_top): Likewise. +* misc.c (GC_min_sp, GC_high_water, GC_bytes_allocd_at_reset): +Likewise. +* os_dep.c (GC_data_start, GC_page_size, GC_sysinfo, +GC_old_segv_handler, GC_old_bus_handler, +GC_old_bus_handler_used_si, GC_old_segv_handler_used_si, +GC_proc_buf, GC_proc_fd, GC_vd_base): Likewise. +* pthread_stop_world.c (GC_stop_count, GC_stopping_pid): Likewise. +* reclaim.c (GC_leaked): Likewise. +* typd_mlc.c (GC_explicit_kind, GC_array_kind, GC_ext_descriptors, +GC_typed_mark_proc_index, GC_array_mark_proc_index, +GC_eobjfreelist, GC_arobjfreelist): Likewise. +* win32_threads.c (GC_pthread_map_cache, GC_marker_cv, +GC_marker_Id): Likewise. +* dbg_mlc.c (GC_smashed, GC_n_smashed): Define as STATIC. +* gcj_mlc.c (GC_gcjdebugobjfreelist): Likewise. +* os_dep.c (GC_vd_base): Likewise. +* pthread_support.c (GC_mark_threads): Likewise. +* reclaim.c (GC_leaked): Likewise. +* typd_mlc.c (GC_bm_table): Likewise. +* mark_rts.c (GC_save_regs_ret_val): Change declaration type to +that of definition; add "defined in" comment. +* mark_rts.c (GC_push_current_stack): Remove unnecessary cast for +GC_save_regs_ret_val. +* misc.c (GC_check_heap, GC_print_all_smashed, +GC_start_call_back): Remove unnecessary cast (of 0). +* misc.c (GC_LARGE_ALLOC_WARN_INTERVAL): New tuning macro. +* misc.c (GC_large_alloc_warn_interval): Initialize to +GC_LARGE_ALLOC_WARN_INTERVAL value. +* misc.c (GC_tmp): Change to "static". +* os_dep.c (GC_mprotect_state): Define as static. +* pthread_support.c (dummy_thread_local): Prefix with "GC_". +* win32_threads.c (WinMain): Remove FIXME for WinCE. + +* os_dep.c (PROTECT, UNPROTECT): Use distinct ABORT messages. + +* configure.ac: Rewrite the tests for external or internal +libatomic_ops. +* configure.ac: In particular, drop the symbolic links. Add option +--with-libatomic-ops for forced selection. +* Makefile.am: Adjust the path of source files from libatomic_ops +to not use the links. +* Makefile.am (libgc_la_LIBADD): Add $(ATOMIC_OPS_LIBS). This will +be empty if we use the bundled AO sources. + +* Makefile.am: Strip version suffix for libatomic_ops directory. +* build_atomic_ops.sh: Likewise. +* build_atomic_ops.sh.cygwin: Likewise. +* configure_atomic_ops.sh: Likewise. +* Makefile.direct: Remove AO_VERSION definition; strip version +suffix for libatomic_ops directory. +* NT_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_THREADS_MAKEFILE: Likewise. +* gc.mak: Likewise. + +* libatomic_ops: Rename from "libatomic_ops-1.2". + +* alloc.c (GC_version): Add "const" keyword. +* alloc.c (GC_get_version): New public function. +* include/gc.h (GC_get_version): New function declaration; update +the comment for the GC version. + +* include/private/gc_locks.h (GC_allocate_ml, GC_lock_holder, +GC_collecting, GC_mark_lock_holder, GC_need_to_lock): Use "extern" +(for the global variable declaration) again. +* include/private/gc_pmark.h (GC_n_mark_procs, GC_mark_stack_size, +GC_mark_stack_limit, GC_mark_stack_top, GC_mark_stack, +GC_mark_stack_too_small, GC_mark_state): Likewise. +* include/private/gcconfig.h (GC_register_stackbottom): Likewise. +* include/private/pthread_support.h (GC_threads, +GC_thr_initialized, GC_in_thread_creation): Likewise. +* include/private/gc_priv.h: Likewise. + +* real_malloc.c: Include private/config.h if HAVE_CONFIG_H. + +* allchblk.c (GC_hblkfreelist): Define as STATIC. +* blacklst.c (GC_total_stack_black_listed): Likewise. +* include/private/gc_priv.h (GC_hblkfreelist, GC_stopped_mark, +GC_total_stack_black_listed, GC_push_stubborn_structures): Remove +declaration. +* mark_rts.c (GC_stopped_mark): Add declaration (only if +THREAD_LOCAL_ALLOC). +* allchblk.c (GC_fail_count): Move the declaration out of +GC_allochblk_nth(); remove "extern". +* alloc.c (IF_THREADS): Remove unused macro. +* alloc.c (GC_world_stopped): Define only if THREAD_LOCAL_ALLOC. +* alloc.c (GC_stopped_mark): Set GC_world_stopped value only if +THREAD_LOCAL_ALLOC. +* alloc.c (GC_bytes_found, GC_collection_in_progress, +GC_check_tls, GC_unmap_threshold, GC_force_unmap_on_gcollect): +Remove K&R-style "extern" for the declaration. +* dbg_mlc.c (GC_free_inner): Likewise. +* dyn_load.c (GC_repeat_read, GC_roots_present, GC_is_heap_base, +GC_get_next_stack, GC_no_win32_dlls, GC_wnt): Likewise. +* finalize.c (GC_fail_count): Likewise. +* include/private/gc_hdrs.h (GC_hdr_cache_hits, +GC_hdr_cache_misses): Likewise. +* include/private/gc_locks.h (GC_allocate_ml, GC_lock_holder, +GC_lock, GC_collecting, GC_mark_lock_holder, GC_need_to_lock): +Likewise. +* include/private/gc_pmark.h (GC_mark_procs, GC_n_mark_procs, +GC_mark_stack_size, GC_mark_stack_limit, GC_mark_stack_top, +GC_mark_stack, GC_mark_stack_too_small, GC_mark_state): Likewise. +* include/private/gc_priv.h (GC_current_warn_proc, GC_obj_kinds, +GC_n_kinds, GC_fo_entries, GC_n_heap_sects, GC_n_memory, +GC_page_size, GC_sysinfo, GC_black_list_spacing, +GC_objects_are_marked, GC_incremental, GC_dirty_maintained, +GC_root_size, GC_debugging_started, GC_large_alloc_warn_interval, +GC_large_alloc_warn_suppressed, GC_blocked_sp, +GC_activation_frame, GC_push_other_roots, +GC_push_finalizer_structures, GC_push_thread_structures, +GC_push_typed_structures, GC_start_call_back, GC_is_initialized, +GC_check_heap, GC_print_all_smashed, GC_print_all_errors, +GC_print_heap_obj, GC_have_errors, GC_print_stats, +GC_dump_regularly, GC_backtraces, GC_print_back_height, +GC_debug_generic_malloc_inner, +GC_debug_generic_malloc_inner_ignore_off_page, +GC_fl_builder_count, GC_mark_no, GC_help_marker, +GC_setup_temporary_fault_handler, GC_reset_fault_handler): Likewise. +* include/private/gcconfig.h (GC_SysVGetDataStart, +GC_FreeBSDGetDataStart, GC_register_stackbottom, +GC_MacTemporaryNewPtr, GC_amiga_get_mem): Likewise. +* include/private/pthread_support.h (GC_threads, +GC_thr_initialized, GC_in_thread_creation): Likewise. +* malloc.c (GC_text_mapping): Likewise. +* mallocx.c (GC_bytes_found): Likewise. +* mark.c (GC_check_dirty, GC_started_thread_while_stopped): Likewise. +* mark_rts.c (GC_save_regs_ret_val): Likewise. +* misc.c (GC_clear_stack_inner, GC_init_parallel, GC_init_win32, +GC_setpagesize, GC_init_linux_data_start, +GC_set_and_save_fault_handler, GC_unmap_threshold): Likewise. +* os_dep.c (GC_unmap_threshold, GC_push_all_stacks, +GC_darwin_register_mach_handler_thread): Likewise. +* pthread_support.c (GC_markers, GC_collection_in_progress): +Likewise. +* tests/test.c (GC_amiga_free_all_mem): Likewise. +* thread_local_alloc.c (GC_gcjobjfreelist, +GC_gcj_malloc_initialized, GC_gcj_kind): Likewise. +* win32_threads.c (GC_write_fault_handler, GC_gww_dirty_init, +GC_fault_handler_lock, GC_write_cs, GC_markers): Likewise. +* misc.c (GC_read, GC_register_finalizer_no_order, GC_init_dyld): +Move the declaration out of GC_init(); remove "extern". +* os_dep.c (GC_abort): Add the comment; add workaround to suppress +compiler "unreachable code" warnings for ABORT callers (where +ABORT is followed by a dummy return statement). +* os_dep.c (GC_old_allocator): Move the declaration out of +GC_default_push_other_roots(); remove "extern". +* darwin_stop_world.c (GC_mprotect_stop, GC_mprotect_resume): +Move the declaration out of GC_stop_world() and GC_start_world() +(only if MPROTECT_VDB); remove "extern". + +* win32_threads.c (GC_get_stack_min, GC_push_stack_for, +GC_get_next_stack): Recognize _WIN32_WCE_EMULATION macro (used for +WinCE emulation and for custom WinCE 6 devices); add the comment. +* win32_threads.c (GC_get_stack_min): Cast pointer to word instead +of DWORD. +* win32_threads.c (GC_get_next_stack): Don't use and maintain the +latest known stack_min value for WinCE (if GC_get_stack_min is +defined as a macro); update the comments. +* win32_threads.c (GC_wnt): Don't declare for WinCE. + +* Makefile.direct: Document EMPTY_GETENV_RESULTS. +* gcj_mlc.c (GC_clear_stack): Remove declaration. +* malloc.c (GC_clear_stack): Likewise. +* mallocx.c (GC_clear_stack): Likewise. +* typd_mlc.c (GC_clear_stack): Likewise. +* gcj_mlc.c (GENERAL_MALLOC, GENERAL_MALLOC_IOP): Rename to +GENERAL_MALLOC_INNER and GENERAL_MALLOC_INNER_IOP, respectively; +remove "lb" unnecessary cast to word. +* include/private/gc_priv.h (GC_clear_stack): Add declaration. +* include/private/gc_priv.h (GENERAL_MALLOC, GENERAL_MALLOC_IOP): +Move common declaration from typd_mlc.c and malloc.c; remove +unnecessary result and "lb" parameter casts. +* include/private/thread_local_alloc.h: Guard against duplicate +header file inclusion. +* os_dep.c (USE_MUNMAP): Replace "-->" with an error directive for +the case when USE_MMAP is not defined. +* pthread_support.c (GC_is_thread_tsd_valid): New internal +function (only if GC_ASSERTIONS and THREAD_LOCAL_ALLOC); move the +code from thread-local GC_malloc(); add FIXME for the condition. +* win32_threads.c (GC_is_thread_tsd_valid): Likewise. +* thread_local_alloc.c (GC_gcjobjfreelist): Change the type (to +match that of its definition). +* thread_local_alloc.c (GC_destroy_thread_local): Add a cast for +GC_gcjobjfreelist. +* thread_local_alloc.c (GC_lookup_thread, GC_lookup_thread_inner): +Remove unused declaration; don't include pthread.h. +* thread_local_alloc.c (GC_is_thread_tsd_valid): New declaration +(only if GC_ASSERTIONS). +* thread_local_alloc.c (GC_malloc): Use GC_is_thread_tsd_valid() +instead of GC_lookup_thread(). +* win32_threads.c (GC_lookup_thread_inner): Define as STATIC. +* win32_threads.c (UNPROTECT): Rename to UNPROTECT_THREAD (to have +id different from that in os_dep.c). + +* allchblk.c (GC_enough_large_bytes_left): Replace "inline static" +with GC_INLINE. +* include/private/gc_priv.h (fixed_getenv): Likewise. +* alloc.c (GC_max, GC_min): Replace "static INLINE" with +GC_INLINE. +* mark_rts.c (rt_hash): Likewise. +* win32_threads.c (GC_get_max_thread_index): Likewise. +* include/private/gc_priv.h (INLINE): Prefix with "GC_"; include +"static"; define for Sun CC; define for VC++ (and other +compilers). +* pthread_support.c: Don't define __inline__ for non-GNU compilers +(not needed anymore). + +* NT_THREADS_MAKEFILE: Remove file (since it duplicates gc.mak). +* Makefile.in: Remove reference to NT_THREADS_MAKEFILE. +* Makefile.am: Likewise. +* Makefile.dj: Likewise. +* Makefile.direct: Likewise. +* doc/README.win32: Add reference to gc.mak. +* NT_X64_THREADS_MAKEFILE: Likewise. + +* Makefile.direct: Remove references to acinclude.m4, libtool.m4. + +* autogen.sh: Update. + +* Makefile.am: Don't add libtool.m4 to EXTRA_DIST. +* acinclude.m4: Fix underquoting of GC_SET_VERSION. +* README.QUICK: Update information for Makefile. +* Makefile.am: Do not distribute the substituted bdw-gc.pc. +* configure.ac: Add AM conditional analog to KEEP_BACK_PTRS. +* tests/tests.am: Use it here to conditionally enable tracetest +when possible. + +* dyn_load.c (GC_wnt): Update the comment. +* dyn_load.c (GC_register_dynamic_libraries): Add the comment for +_WIN32_WCE_EMULATION; recognize GC_REGISTER_MEM_PRIVATE (new +macro); call GC_is_heap_base() only if check for Type succeeded. + +* mark_rts.c (GC_is_tmp_root): Don't define unless NO_DEBUGGING; +update the comment. +* include/private/gc_priv.h (GC_is_tmp_root): Remove declaration. + +* include/private/gcconfig.h (CANCEL_SAFE, IF_CANCEL): new macros. +* include/private/gc_priv.h (DISABLE_CANCEL, RESTORE_CANCEL, +ASSERT_CANCEL_DISABLED): New macros. +* alloc.c (GC_maybe_gc): Assert cancellation disabled. +(GC_collect_a_little_inner,GC_try_to_collect, GC_collect_or_expand): +Disable cancellation. +(GC_add_to_our_memory): Check for overflow. +* misc.c (GC_cancel_disable_count): declare. +(GC_init, GC_write): Disable cancellation. +(GC_init): Remove redundant GC_is_initialized test. +* os_dep.c (GC_repeat_read): Assert cancellation disabled. +(GC_get_stack_base): Disable cancellation. +* pthread_stop_world.c (GC_suspend_handler_inner): Disable +cancellation. +* pthread_support.c (GC_mark_thread): Permanently disable +cancellation. +(GC_wait_for_gc_completion, GC_wait_builder, GC_wait_marker): +Assert cancellation disabled. +(fork handling): Disable cancellation, fix comment. +(GC_pthread_create): Disable cancellation. +(GC_unregister_my_thread): Disable cancellation. +* Makefile.direct: Document NO_CANCEL_SAFE. + +* Makefile: Remove outdated file (Makefile.direct should be used +instead). + +* include/gc.h (GC_use_DllMain): Refine the comment. + +* configure.ac: Add documentation to AC_DEFINE for GC_THREADS and +EMPTY_GETENV_RESULTS. +* configure.ac: Fix a typo. +* Makefile.am: Likewise. + +* checksums.c (GC_checksum, GC_update_check_page): Remove +"register" keyword in local variable declarations (for the code +used only for debugging or which is not time-critical). +* dbg_mlc.c (GC_has_other_debug_info, GC_store_debug_info, +GC_store_debug_info_inner, GC_check_annotated_obj, GC_print_obj, +GC_print_smashed_obj, GC_debug_end_stubborn_change, +GC_debug_invoke_finalizer): Likewise. +* dyn_load.c (GC_register_dynamic_libraries): Likewise. +* mallocx.c (GC_realloc): Likewise. +* mark_rts.c (GC_print_static_roots, GC_is_static_root, +GC_clear_roots): Likewise. +* misc.c (GC_write): Likewise. +* os_dep.c (GC_print_callers): Likewise. +* dyn_load.c (GC_register_dynamic_libraries): Rename "i" local +variable to "j" for the nested loop (just not to hide the similar +variable in the outer one). +* mark_rts.c (GC_print_static_roots): Output an error message +using GC_err_printf() (instead of GC_printf()). + +* configure.ac: Move include flag from ${INCLUDE} ... +* Makefile.am: ... to AM_CPPFLAGS and also add the build directory. +* configure.ac: Call AM_CONFIG_HEADER([include/private/config.h]). +* configure.ac: Add documentation to all AC_DEFINE either directly +or using AH_TEMPLATE. + +* win32_threads.c (GC_waitForSingleObjectInfinite): New static +function (only if GC_WINMAIN_REDIRECT). +* win32_threads.c (WinMain): Call GC_waitForSingleObjectInfinite() +thru GC_do_blocking() instead of calling WaitForSingleObject() +directly. + +* pthread_support.c (start_mark_threads): Refine printed message. +* win32_threads.c (GC_thr_init): Likewise. + +* Makefile.direct (GC_WINMAIN_REDIRECT): Add the comment for. +* Makefile.direct (NO_GETENV): Update the comment. +* include/gc.h (GC_WINMAIN_WINCE_LPTSTR): Remove macro. +* include/gc.h (GC_WinMain): Remove declaration. +* include/gc.h (WinMain): Define (as GC_WinMain) if and only if +GC_WINMAIN_REDIRECT. +* tests/test.c (GC_COND_INIT): Define as GC_INIT() also in case of +WinCE target unless GC_WINMAIN_REDIRECT is defined. +* tests/test.c (WINMAIN_LPTSTR): New macro. +* tests/test.c (WinMain): Use WINMAIN_LPTSTR instead of LP[W]STR +and GC_WINMAIN_WINCE_LPTSTR. +* win32_threads.c (start_mark_threads): Add the comment for +MARK_THREAD_STACK_SIZE. +* win32_threads.c: Recognize new GC_WINMAIN_REDIRECT macro. +* win32_threads.c (WINMAIN_LPTSTR, WINMAIN_THREAD_STACK_SIZE): New +macro (only if GC_WINMAIN_REDIRECT). +* win32_threads.c: Undefine WinMain macro if GC_WINMAIN_REDIRECT. +* win32_threads.c (GC_WinMain): Add prototype (only if +GC_WINMAIN_REDIRECT). +* win32_threads.c (main_thread_args, WinMain): Rename +GC_WINMAIN_WINCE_LPTSTR to WINMAIN_LPTSTR. +* win32_threads.c (WinMain): Call GC_INIT() instead of GC_init(); +use WINMAIN_THREAD_STACK_SIZE. +* win32_threads.c (WinMain): Call GC_deinit() and +DeleteCriticalSection() only if WinCE; add FIXME. + +* os_dep.c (GC_get_main_stack_base): add assertion for mem_base +value returned by GC_get_stack_base(). + +* Makefile.direct (MUNMAP_THRESHOLD, GC_FORCE_UNMAP_ON_GCOLLECT): +Add the comment for. +* alloc.c (GC_unmap_threshold, GC_force_unmap_on_gcollect): +Declare external variable (only if USE_MUNMAP). +* alloc.c (GC_try_to_collect): Temporarily set GC_unmap_threshold +value to 1 if GC_force_unmap_on_gcollect and restore it before +unlocking (only if USE_MUNMAP). +* doc/README.environment (GC_FORCE_UNMAP_ON_GCOLLECT): Add +information for. +* include/gc.h (GC_set_force_unmap_on_gcollect, +GC_get_force_unmap_on_gcollect): New public function prototype. +* include/gc.h (GC_FORCE_UNMAP_ON_GCOLLECT): New macro is +recognized. +* misc.c (GC_FORCE_UNMAP_ON_GCOLLECT): Likewise. +* include/gc.h (GC_INIT_CONF_FORCE_UNMAP_ON_GCOLLECT): New +internal macro (used by GC_INIT only). +* misc.c (GC_force_unmap_on_gcollect): New global variable. +* misc.c (GC_init): Recognize new "GC_FORCE_UNMAP_ON_GCOLLECT" +environment variable (and set GC_force_unmap_on_gcollect). +* misc.c (GC_set_force_unmap_on_gcollect, +GC_get_force_unmap_on_gcollect): New public function. +* tests/test.c (window_proc): Call GC_set_force_unmap_on_gcollect +to force the mode on if WM_HIBERNATE; restore the mode after +GC_gcollect(). + +* Makefile.direct (LARGE_CONFIG): Update information. +* include/gc.h (GC_stop_func): Refine the comment. + +* configure.ac: Use EMPTY_GETENV_RESULTS instead of NO_GETENV for +Win32 (workaround for Wine bug). + +* allchblk.c (GC_freehblk): Adjust local variables indentation. +* mallocx.c (GC_generic_malloc_many): Likewise. +* typd_mlc.c (GC_malloc_explicitly_typed_ignore_off_page, +GC_calloc_explicitly_typed): Likewise. +* typd_mlc.c (GC_make_array_descriptor): Remove unnecessary +brackets. + +* configure.ac: Replace GC_WIN32_THREADS with GC_THREADS. +* configure.ac: Process enable_parallel_mark option for Cygwin and +Win32; define THREAD_LOCAL_ALLOC for Win32. + +* include/private/gc_priv.h: Define AO_ASSUME_WINDOWS98 if +PARALLEL_MARK (required for VC++ x86). + +* dbg_mlc.c (GC_generate_random_backtrace): Call +GC_try_to_collect(GC_never_stop_func) instead of GC_gcollect(); +if GC is disabled then print error message and return. +* include/gc.h (GC_try_to_collect): Refine the comment. +* include/private/gc_priv.h (GC_never_stop_func): Fix return type; +refine the comment. + +* add_gc_prefix.c: Move the file to the new "extra" directory. +* AmigaOS.c: Likewise. +* gcname.c: Likewise. +* if_mach.c: Likewise. +* if_not_there.c: Likewise. +* MacOS.c: Likewise. +* msvc_dbg.c: Likewise. +* setjmp_t.c: Likewise. +* threadlibs.c: Likewise. +* EMX_MAKEFILE: Prepend setjmp_t.c with "extra" directory. +* Makefile: Prepend AmigaOS.c, MacOS.c, add_gc_prefix.c, gcname.c, +if_mach.c, if_not_there.c, msvc_dbg.c, setjmp_t.c, threadlibs.c +with "extra" directory. +* Makefile.am: Likewise. +* Makefile.direct: Likewise. +* Makefile.dj: Likewise. +* Makefile.in: Likewise. +* NT_MAKEFILE: Prepend msvc_dbg.obj with "extra" directory. +* NT_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_THREADS_MAKEFILE: Likewise. +* NT_THREADS_MAKEFILE: Prepend msvc_dbg.c with "extra" directory. +* gc.mak: Likewise. +* PCR-Makefile: Prepend if_mach.c, if_not_there.c with "extra" +directory. +* SMakefile.amiga: Prepend AmigaOS.c, setjmp_t.c with "extra" +directory. +* doc/simple_example.html: Update for threadlibs.c. +* os_dep.c: Prepend included AmigaOS.c with "extra" directory. + +* include/gc.h (GC_do_blocking, GC_call_with_gc_active): New +function prototype. +* include/private/gc_priv.h (STOP_WORLD): Replace a no-op (for the +single-threaded case) with an assertion check for the state to be +not a "do-blocking" one. +* include/private/gc_priv.h (blocking_data): Move the structure +definition from pthread_support.c; change "fn" return type to void +pointer. +* include/private/gc_priv.h (GC_activation_frame_s): New structure +type. +* include/private/gc_priv.h (GC_push_all_stack_frames): New +function declaration (only if THREADS). +* include/private/gc_priv.h (GC_world_stopped): Don't declare +unless THREADS. +* include/private/gc_priv.h (GC_blocked_sp, +GC_activation_frame_s): New declaration (only if not THREADS). +* include/private/gc_priv.h (GC_push_all_register_frames): New +function declaration (only for IA-64). +* include/private/gc_priv.h (NURSERY, GC_push_proc): Remove +obsolete (unused) symbols. +* include/private/gc_priv.h (GC_push_all_stack_partially_eager): +Remove declaration (since it is static now). +* mark_rts.c (GC_push_all_stack_partially_eager): Move from mark.c +(for code locality) and make STATIC. +* mark_rts.c (GC_push_all_register_frames): New function (only for +IA-64). +* mark_rts.c (GC_push_all_stack_frames): New function (only if +THREADS). +* mark_rts.c (GC_add_trace_entry): New function prototype (used by +GC_push_all_stack_partially_eager(), only if TRACE_BUF). +* mark_rts.c (GC_push_all_stack_part_eager_frames): New function. +* mar_rts.c (GC_save_regs_ret_val): Move the declaration out of a +function body (only for IA-64). +* mark_rts.c (GC_push_current_stack): Call +GC_push_all_stack_part_eager_frames() instead of +GC_push_all_stack_partially_eager(). +* mark_rts.c (GC_push_current_stack): Call +GC_push_all_register_frames() instead of GC_push_all_eager() for +IA-64 backing store. +* misc.c (GC_do_blocking_inner): Declare function (if THREADS +only). +* misc.c (GC_blocked_sp, GC_blocked_register_sp, +GC_activation_frame): New global variables (only if not THREADS). +* misc.c (GC_call_with_gc_active, GC_do_blocking_inner): New API +function (only if not THREADS). +* misc.c (GC_do_blocking): Move the function from +pthread_support.c. +* include/private/pthread_support.h (GC_Thread_Rep): Add +"activation_frame" field. +* pthread_stop_world.c (GC_push_all_stacks): Call +GC_push_all_stack_frames() and GC_push_all_register_frames instead +of GC_push_all_stack() and/or GC_push_all_eager(); don't check for +STACK_GROWS_UP here. +* pthread_support.c (GC_do_blocking_inner): Remove "static"; store +"fn" result back to "client_data" field. +* pthread_support.c (GC_call_with_gc_active): New API function. +* win32_threads.c (GC_call_with_gc_active): Likewise. +* win32_threads.c (GC_Thread_Rep): Add "thread_blocked_sp" and +"activation_frame" fields. +* win32_threads.c (GC_new_thread): Add assertion checking for +thread_blocked_sp is NULL. +* win32_threads.c (GC_do_blocking_inner): New function. +* win32_threads.c (GC_stop_world): Don't suspend a thread if its +thread_blocked_sp is non-NULL. +* win32_threads.c (GC_push_stack_for): Use thread +"activation_frame" (if non-NULL); use "thread_blocked_sp" if +non-NULL (instead of calling GetThreadContext()); "UNPROTECT" the +thread before modifying its last_stack_min; call +GC_push_all_stack_frames() instead of GC_push_all_stack(); update +the comments. + +* alloc.c (GC_default_stop_func): New static variable (initialized +to GC_never_stop_func). +* alloc.c (GC_set_stop_func, GC_get_stop_func): New function. +* alloc.c (GC_timeout_stop_func): Define as GC_default_stop_func +(instead of GC_never_stop_func) if SMALL_CONFIG (or NO_CLOCK), +else call GC_default_stop_func() before getting "current_time". +* alloc.c (GC_maybe_gc): Expand GC_gcollect_inner() macro (for +FIXME comment). +* alloc.c (GC_maybe_gc, GC_collect_a_little_inner): add FIXME for +replacing GC_never_stop_func with GC_default_stop_func (if +possible). +* alloc.c (GC_gcollect): Use GC_default_stop_func. +* alloc.c (GC_collect_or_expand): Use GC_default_stop_func +(instead of GC_never_stop_func) unless it is trigged due to out of +memory; don't increment GC_fail_count and don't output warning +(before trying to collect again) in case the collection has been +interrupted (by GC_default_stop_func) and the heap expansion has +failed too. +* include/gc.h (GC_set_stop_func, GC_get_stop_func): New function +prototypes. + +* os_dep.c (GC_get_stack_base): Add FIXME; add assertion for +GC_get_writable_length() result. + +* configure.ac: Don't use -lpthread -ldl for Cygwin. + +* NT_THREADS_MAKEFILE: Make it back equal to gc.mak. + +* include/private/gcconfig.h (GWW_VDB): Undefine if +USE_GLOBAL_ALLOC (since incompatible). +* os_dep.c (GetWriteWatch_alloc_flag): Define as 0 unless GWW_VDB +is defined. +* os_dep.c (GC_unmap_threshold): Declare (for use in +GC_init_win32) if USE_MUNMAP. +* os_dep.c (GC_init_win32): Turn off memory unmapping if +GlobalAlloc() is used. +* os_dep.c (GC_win32_get_mem): Define and use new +VIRTUAL_ALLOC_PAD macro; don't waste an extra memory page unless +MPROTECT_VDB is in use. + +* Makefile: Replace "version.h" with "include/gc_version.h". +* include/gc_version.h: Likewise. + +* alloc.c (GC_collect_or_expand): Output heap size in WARN() +(before returning FALSE) for convenience. + +* allchblk.c (GC_allochblk_nth): Use GC_PRIdPTR in WARN() format +string. +* pthread_support.c (start_mark_threads, GC_thr_init): Likewise. +* win32_threads.c (GC_delete_thread): Likewise. +* include/private/gc_priv.h (GC_PRIdPTR): New macro. +* pthread_stop_world.c (GC_suspend_handler_inner): Remove +unnecessary cast for WARN argument. +* pthread_support.c (start_mark_threads): if pthread_create() +failed then don't try to create other marker threads and (after +printing a warning) adjust GC_markers and GC_parallel values; log +GC_markers value (possibly adjusted) after that. + +* win32_threads.c (start_mark_threads): if pthread_create() is +failed then don't try to create other marker threads and (after +printing a warning) adjust GC_markers and GC_parallel values. +* win32_threads.c (mark_mutex_event, builder_cv, mark_cv): Move +the definition upper (to be visible in start_mark_threads()). +* win32_threads.c (start_mark_threads): if CreateThread() or +_beginthreadex() is failed then don't try to create other marker +threads and (after printing a warning) adjust GC_markers, +GC_parallel values, and destroy the event objects (either only +some for the uncreated threads if DONT_USE_SIGNALANDWAIT or all if +not a single thread is created). +* win32_threads.c (GC_thr_init): Log GC_markers value (possibly +adjusted) after start_mark_threads() call. + +* Makefile.am: Back remove "GC_" prefix for PTHREADS, +DARWIN_THREADS, WIN32_THREADS (for configure.ac). + +* include/private/gc_priv.h: Change include of config.h to +private/config.h. +* include/private/gc_pmark.h: Likewise. +* gc_cpp.cc: Likewise. +* tests/test.c: Likewise. +* tests/test_cpp.cc: Include private/config.h (if HAVE_CONFIG_H); +undefine GC_BUILD. + +* finalize.c (GC_general_register_disappearing_link): Return +GC_SUCCESS, GC_DUPLICATE, GC_NO_MEMORY (instead of 0, 1 and 2, +respectively). +* include/gc.h (GC_NO_MEMORY): New macro (defined as 2). +* include/gc.h (GC_register_disappearing_link, +GC_general_register_disappearing_link): Update the comment. +* typd_mlc.c (GC_calloc_explicitly_typed): Use GC_NO_MEMORY macro. +* finalize.c (GC_general_register_disappearing_link, +GC_register_finalizer_inner): Recalculate the hash table index +after GC_oom_fn succeeded (since the table may grow while not +holding the lock) and check again that the entry is still not in +the table (free the unused entry otherwise unless DBG_HDRS_ALL). +* finalize.c (GC_register_finalizer_inner): Initialize "hhdr" +local variable (to prevent a compiler warning). +* finalize.c (GC_register_finalizer_inner): Don't modify the data +pointed by "ocd" and "ofn" in GC_register_finalizer_inner() failed +(due to out of memory). + +* alloc.c (GC_set_fl_marks, GC_clear_fl_marks): Transform loop to +suppress compiler "variable might be uninitialized" warnings. + +* Makefile.direct (DONT_USE_SIGNALANDWAIT): Add the comment for. +* win32_threads.c (DONT_USE_SIGNALANDWAIT): Always define for +WinCE. +* win32_threads.c (THREAD_HANDLE): Cast Id (of DWORD type) to +HANDLE thru word type (to avoid a compiler warning) for WinCE. +* win32_threads.c (GC_marker_cv, GC_marker_Id): New static array +(only if DONT_USE_SIGNALANDWAIT). +* win32_threads.c (start_mark_threads): Initialize GC_marker_Id +and GC_marker_cv for each helper thread (only if +DONT_USE_SIGNALANDWAIT). +* win32_threads.c (GC_mark_mutex_state): New static variable (only +if DONT_USE_SIGNALANDWAIT). +* win32_threads.c (GC_mark_mutex_waitcnt, +signalObjectAndWait_func): Don't define if DONT_USE_SIGNALANDWAIT. +* win32_threads.c (GC_acquire_mark_lock, GC_release_mark_lock): +Use InterlockedExchange() over GC_mark_mutex_state (instead of +AO_fetch_and_add()) if DONT_USE_SIGNALANDWAIT. +* win32_threads.c (GC_wait_marker, GC_notify_all_marker): +Implement wait/broadcast primitives using Win32 multiple events +(one for each marker thread) if DONT_USE_SIGNALANDWAIT (instead of +using Win32 SignalObjectAndWait). +* win32_threads.c (GC_thr_init): Don't declare hK32 local +variable, don't check for GC_wnt, and don't initialize +signalObjectAndWait_func if DONT_USE_SIGNALANDWAIT. + +* alloc.c (GC_finish_collection): Call GC_print_finalization_stats +if GC_print_stats (after getting "done_time"). +* finalize.c (GC_old_dl_entries): New static variable (only if not +SMALL_CONFIG). +* finalize.c (GC_finalize): Save current GC_dl_entries value (only +if not SMALL_CONFIG). +* finalize.c (GC_print_finalization_stats): Define if and only if +not SMALL_CONFIG; use GC_old_dl_entries value; use GC_log_printf() +instead of GC_printf(); use "%lu" (instead of "%u") print format +specifier; use unsigned long type for "ready" counter (for LP64 +targets). +* misc.c (GC_dump): No longer call GC_print_finalization_stats() +here (since it is called from GC_finish_collection()). +* misc.c (STACKBASE): Remove unused macro undef (for NOSYS and +ECOS). + +* alloc.c (GC_expand_hp): Replace GC_init_inner() call with +GC_init() one. +* malloc.c (GC_alloc_large, GC_generic_malloc_inner): Likewise. +* mallocx.c (GC_generic_malloc_many): Likewise. +* misc.c (GC_enable_incremental): Likewise. +* alloc.c (GC_expand_hp): Update the comment. +* mark.c (GC_obj_kinds): Likewise. +* win32_threads.c (GC_allow_register_threads): Likewise. +* private/gc_priv.h (GC_init_inner): Remove function declaration. +* misc.c (GC_init_inner): Replace with public GC_init(). + +* gcj_mlc.c (GC_gcj_fake_mark_proc): New static function. +* gcj_mlc.c (GC_init_gcj_malloc): If mp is 0 then supply +GC_gcj_fake_mark_proc (aborting with the appropriate message) +instead. + +* os_dep.c (GC_wince_get_mem): If VirtualAlloc() returns NULL (due +to out of memory) then don't increment GC_n_heap_bases and don't +call VirtualAlloc() again (with MEM_COMMIT). +* os_dep.c (GC_remap): Abort with a more informatory message if +VirtualAlloc() fails due to out of memory; update FIXME. + +* Makefile: Fix typo for msvc_dbg.c. +* Makefile.direct: Likewise. +* Makefile.am: Prefix PTHREADS, DARWIN_THREADS, WIN32_THREADS with +"GC_". +* Makefile.dj: Don't reference remove files (nursery.c, +gc_nursery.h, gc_copy_descr.h). +* NT_MAKEFILE: Don't define __STDC__ macro (no longer used). +* NT_STATIC_THREADS_MAKEFILE: Likewise. +* NT_THREADS_MAKEFILE: Likewise. +* NT_X64_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_THREADS_MAKEFILE: Likewise. +* gc.mak: Likewise. +* NT_MAKEFILE: Remove unnecessary -DGC_BUILD (since it is always +defined in the source files). +* NT_THREADS_MAKEFILE: Likewise. +* NT_X64_THREADS_MAKEFILE: Likewise. +* gc.mak: Likewise. +* NT_X64_THREADS_MAKEFILE: Fix typo for -DGC_NOT_DLL. +* NT_STATIC_THREADS_MAKEFILE: Replace GC_WIN32_THREADS with +GC_THREADS. +* NT_THREADS_MAKEFILE: Likewise. +* NT_X64_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_THREADS_MAKEFILE: Likewise. +* gc.mak: Likewise. +* NT_MAKEFILE: Define _CRT_SECURE_NO_DEPRECATE to suppress the +compiler warnings. +* NT_STATIC_THREADS_MAKEFILE: Likewise. +* NT_X64_STATIC_THREADS_MAKEFILE: Place -D_CRT_SECURE_NO_DEPRECATE +before "$*.C" (and "$*.CPP"). +* NT_X64_THREADS_MAKEFILE: Likewise. + +* doc/README.solaris2: Replace GC_SOLARIS_THREADS with GC_THREADS. +* doc/README.win32: Replace GC_WIN32_THREADS with GC_THREADS. +* doc/README.win64: Add info about mingw-w64; add note for VC++ +warnings suppression. + +* os_dep.c (GC_forward_exception): Fix logic in several places. +(OSX-specific) + +* include/private/gc_priv.h (MAX_HEAP_SECTS): Guard with ifndef. + +* Makefile.direct: Copy missing information for -DSHORT_DBG_HDRS +from Makefile. +* Makefile: Remove the information about "define arguments" (which +is incomplete and outdated compared to that in Makefile.direct); +add help reference to Makefile.direct. +* Makefile.dj: Likewise. + +* alloc.c (world_stopped_total_time, world_stopped_total_divisor): +Replace "STATIC" with "static" in the definition (since the +symbols aren't prefixed with "GC_"). +* win32_threads.c (marker_sp, marker_bsp, marker_last_stack_min, +start_mark_threads, mark_mutex, builder_cv, mark_cv, +mark_mutex_event, signalObjectAndWait_func, main_thread_start): +Likewise. +* pthread_support.c (GC_wait_builder): Define as STATIC. +* win32_threads.c (GC_wait_builder): Likewise. + +* misc.c (GC_get_heap_size_inner, GC_get_free_bytes_inner): New +API function. +* include/gc_pmark.h (GC_get_heap_size_inner, +GC_get_free_bytes_inner): New function declaration. + +* include/gc.h: Recognize __CEGCC__ (as a synonym for _WIN32_WCE). +* include/gc_config_macros.h: Likewise. +* include/gc.h (GC_MAXIMUM_HEAP_SIZE): Recognize new macro. +* include/gc.h (GC_INIT_CONF_MAXIMUM_HEAP_SIZE): New macro (for +internal use). +* include/gc_config_macros.h: Always include stddef.h if GCC. +* include/gc_config_macros.h (GC_API): Define for CeGCC in the +same way as for MinGW. +* include/gc_config_macros.h (GC_API): Group the definition for +all cases together (check for GC_DLL only once). +* include/gc_pthread_redirects.h: Group non-Darwin code together. +* tests/test.c: Recognize GC_PRINT_VERBOSE_STATS (only if GC_DLL). + +* Makefile.direct (GC_PTHREADS_PARAMARK, GC_IGNORE_GCJ_INFO, +GC_PRINT_VERBOSE_STATS, GC_DONT_EXPAND, GC_INITIAL_HEAP_SIZE, +GC_FREE_SPACE_DIVISOR, GC_TIME_LIMIT, GC_FULL_FREQ): Add the +comment for. +* misc.c (GC_init_inner): Recognize GC_PRINT_VERBOSE_STATS (new +macro). +* dyn_load.c (GC_wnt): Change definition to TRUE for WinCE; add +FIXME and the comment for WinCE. +* gcj_mlc.c (GC_init_gcj_malloc): Recognize GC_IGNORE_GCJ_INFO +(new macro). +* include/gc.h (GC_HAVE_BUILTIN_BACKTRACE): Don't define for VC++ +WinCE (since backtrace() is unimplemented). +* include/private/gc_priv.h (GC_n_heap_bases): Remove declaration +(since static). +* os_dep.c (GC_n_heap_bases): Define as STATIC; move the +definition to be above GC_is_heap_base(). +* include/private/gcconfig.h: Don't define NOSYS for WinCE on ARM +(both for MinGW and CeGCC toolchains). +* include/private/gcconfig.h: Recognize __CEGCC__ and +__MINGW32CE__ (as synonyms for __WIN32_WCE). +* include/private/gcconfig.h: If SH4 then don't set config +parameters for SH. +* include/private/thread_local_alloc.h (GC_key_create): Don't +abort on failures, just return -1 in these cases (this also +prevents compilation error for targets where ABORT is defined +indirectly as an inline assembler sequence). +* mark.c (WRAP_MARK_SOME): Also define for WinCE; add FIXME for +the GCC-based cross-compiler. +* mark.c (ext_ex_regn, mark_ex_handler): Don't define unless +WRAP_MARK_SOME is defined; define also for WinCE case; don't +check for _WIN64 (since WRAP_MARK_SOME is undefined for it). +* mark.c (GC_mark_some): Use __try/__except also for WinCE; update +the comment. +* misc.c: Include signal.h after gc_pmark.h included; check for +MSWINCE instead of _WIN32_WCE. +* misc.c (GC_init_inner): Remove duplicate GC_setpagesize() call. +* misc.c: Don't include for WinCE targets. +* misc.c (GC_write): Define _MAX_PATH if undefined (workaround for +CeGCC toolchain). +* misc.c (GC_write): Use OutputDebugStringW() instead of +_CrtDbgReport() for WinCE targets. +* os_dep.c (GC_least_described_address): Define as STATIC. +* os_dep.c (GC_register_data_segments): Fix code indentation. +* os_dep.c (GC_wince_get_mem): Initialize "result" local variable +(to prevent a compiler warning). +* os_dep.c (GC_dirty_init): Add comment for WinCE target. +* tests/test.c: Don't include winbase.h directly if GCC for WinCE, +include assert.h instead. +* tests/test.c (tiny_reverse_test): Define and use +TINY_REVERSE_UPPER_VALUE macro (4 if VERY_SMALL_CONFIG else 10); +useful for WinCE. +* win32_threads.c (GC_Thread_Rep): Don't declare "handle" field +for WinCE (since thread Id is used as a "real" thread handle). +* win32_threads.c (THREAD_HANDLE): New macro. +* win32_threads.c (GC_register_my_thread_inner): Don't recognize +DONT_IMPORT_GETCURTHREAD anymore; don't record thread handle on +WinCE. +* Makefile.direct (DONT_IMPORT_GETCURTHREAD): Remove comment for. +* win32_threads.c (UNPROTECT, GC_fault_handler_lock): Don't check +for MSWINCE. +* win32_threads.c (GC_delete_gc_thread, GC_delete_thread): Don't +close thread handle on WinCE (since it's a thread Id). +* win32_threads.c (GC_suspend): Don't check for MSWINCE in the +MPROTECT-related code (for the case if MPROTECT_VDB would be +implemented for WinCE). +* win32_threads.c (GC_suspend, GC_start_world, GC_push_stack_for): +Use THREAD_HANDLE(t) to obtain thread handle. +* win32_threads.c (GC_PTHREADS_PARAMARK): New macro recognized; +implicitly define GC_PTHREADS_PARAMARK if GC_PTHREADS; include +pthread.h; define NUMERIC_THREAD_ID(id) if undefined yet; replace +GC_PTHREADS with GC_PTHREADS_PARAMARK where appropriate (for the +parallel mark support). +* win32_threads.c (start_mark_threads): Use int type for "i" local +variable (instead of "unsigned") to prevent a compiler warning. +* win32_threads.c (start_mark_threads): Don't check CreateThread() +result for -1; call CloseHandle() for the handle created by +CreateThread() (on WinCE); don't use errno (since errno.h is +missing on some targets like WinCE) when printing warning on a +marker thread creation failure. +* win32_threads.c (signalObjectAndWait_func): Define for WinCE. +* win32_threads.c (GC_wait_marker): Remove unnecessary assertion +for non-zero signalObjectAndWait_func (to make the code compilable +for WinCE). +* win32_threads.c (GC_thr_init): Allow PARALLEL_MARK for WinCE; +use GC_sysinfo to get processors count if WinCE; don't check for +SignalObjectAndWait() if WinCE; replace GC_PTHREADS with +GC_PTHREADS_PARAMARK. +* win32_threads.c (GC_thr_init): Recognize GC_MIN_MARKERS new +macro (useful for testing parallel marking on WinCE). +* win32_threads.c (GC_win32_start, main_thread_start): Define as +STATIC. +* win32_threads.c: Don't define main_thread_args, +main_thread_start(), WinMain() for WinCE if GC_DLL. +* win32_threads.c (WINCE_MAIN_STACK_SIZE): Remove useless macro +(since the stack size parameter is ignored on WinCE). +* win32_threads.c (main_thread_start): Remove forward declaration; +place its definition before WinMain() one. +* win32_threads.c (WinMain): Abort if GC_CreateThread() or +WaitForSingleObject() failed (for the main thread). + +* allchblk.c (MUNMAP_THRESHOLD): Move macro definition out of +a function. +* allchblk.c (GC_unmap_threshold): New global variable definition +(initialized to MUNMAP_THRESHOLD). +* allchblk.c (GC_unmap_old): Use GC_unmap_threshold instead of +MUNMAP_THRESHOLD; skip unmapping if GC_unmap_threshold is 0. +* doc/README.environment (GC_UNMAP_THRESHOLD): Add information. +* misc.c (GC_unmap_threshold): New variable declaration. +* misc.c (GC_init_inner): Recognize "GC_UNMAP_THRESHOLD" +environment variable to set GC_unmap_threshold value (only if +USE_MUNMAP). + +* dbg_mlc.c (OFN_UNSET): New macro (to detect +GC_register_finalizer() failures). +* dbg_mlc.c (store_old): Add a check for register_finalizer() +failure caused by an out-of-memory event (leave *ofn and *ocd +unmodified in that case). +* dbg_mlc.c (GC_debug_register_finalizer, +GC_debug_register_finalizer_no_order, +GC_debug_register_finalizer_unreachable, +GC_debug_register_finalizer_ignore_self): Initialize my_old_fn +to OFN_UNSET; clear *ocd and *ofn for non-heap objects (the same +as in GC_register_finalizer_inner()). + +* Makefile.direct (GC_DLL): Add the comment for. +* doc/README.macros: Fix a typo. +* doc/README.macros (_DLL, GC_DLL, GC_NOT_DLL): Update info. +* doc/README.macros (__STDC__): Remove info. +* dbg_mlc.c (GC_get_back_ptr_info, GC_generate_random_heap_address, +GC_generate_random_valid_address, GC_print_backtrace, +GC_generate_random_backtrace, GC_register_describe_type_fn): Add +GC_API and GC_CALL to function definition. +* malloc.c (GC_generic_malloc): Likewise. +* mallocx.c (GC_incr_bytes_allocd, GC_incr_bytes_freed): Likewise. +* mark.c (GC_mark_and_push): Likewise. +* misc.c (GC_new_free_list_inner, GC_new_free_list, +GC_new_kind_inner, GC_new_kind, GC_new_proc_inner, GC_new_proc): +Likewise. +* include/gc_backptr.h (GC_get_back_ptr_info, +GC_generate_random_heap_address, GC_generate_random_valid_address, +GC_generate_random_backtrace, GC_print_backtrace): Add GC_API and +GC_CALL to function prototype. +* include/gc_mark.h (GC_mark_and_push, GC_new_free_list, +GC_new_free_list_inner, GC_new_kind, GC_new_kind_inner, +GC_new_proc, GC_new_proc_inner, GC_generic_malloc, +GC_register_describe_type_fn): Likewise. +* include/new_gc_alloc.h (GC_incr_bytes_allocd, GC_incr_mem_freed, +GC_generic_malloc_words_small): Likewise. +* gc_cpp.cc: Include "config.h" (if HAVE_CONFIG_H defined). +* include/private/gc_pmark.h: Likewise. +* include/private/gc_priv.h: Likewise. +* tests/test.c: Likewise. +* gc_cpp.cc: Define GC_BUILD. +* include/private/gc_pmark.h: Likewise. +* include/private/gc_priv.h: Likewise. +* gc_dlopen.c (WRAP_FUNC, REAL_FUNC): New macro. +* gc_dlopen.c (dlopen): Add GC_API to the wrapper function +definition. +* pthread_support.c (GC_pthread_create, GC_pthread_sigmask, +GC_pthread_join, GC_pthread_detach, pthread_sigmask, pthread_join, +pthread_detach, pthread_create): Likewise. +* win32_threads.c (GC_pthread_join, GC_pthread_create, +GC_pthread_sigmask, GC_pthread_detach): Likewise. +* gc_dlopen.c (dlopen): Use WRAP_FUNC and REAL_FUNC macros. +* include/gc_backptr.h: Include "gc.h". +* include/gc_backptr.h: Use extern "C" for the exported functions. +* include/gc_mark.h: Likewise. +* include/gc_config_macros.h (GC_THREADS): Define the macro if any +GC_XXX_THREADS is defined. +* include/gc_config_macros.h (_PTHREADS, _POSIX4A_DRAFT10_SOURCE): +Move the definitions below the place where GC_NETBSD_THREADS and +GC_DGUX386_THREADS are defined. +* include/gc_config_macros.h (GC_DLL): Don't define (even if _DLL +is defined) for GCC. +* include/gc_config_macros.h (GC_API): Define for Cygwin (in the +same way as for VC++); define for GCC v4+ (other than already +recognized MinGW/Cygwin) as a "default" visibility attribute if +GC_DLL is defined. +* include/gc_config_macros.h (GC_ATTR_MALLOC, GC_ATTR_ALLOC_SIZE): +New macro. +* include/gc.h (GC_malloc, GC_malloc_atomic, GC_strdup, +GC_malloc_uncollectable, GC_malloc_stubborn, GC_memalign, +GC_malloc_atomic_uncollectable, GC_malloc_ignore_off_page, +GC_malloc_atomic_ignore_off_page, GC_debug_malloc, +GC_debug_malloc_atomic, GC_debug_strdup, +GC_debug_malloc_uncollectable, GC_debug_malloc_stubborn, +GC_debug_malloc_ignore_off_page, +GC_debug_malloc_atomic_ignore_off_page, +GC_debug_malloc_replacement): Add GC_ATTR_MALLOC attribute. +* include/gc_gcj.h (GC_gcj_malloc, GC_debug_gcj_malloc, +GC_gcj_malloc_ignore_off_page): Likewise. +* include/gc.h (GC_malloc, GC_malloc_atomic, +GC_malloc_uncollectable, GC_malloc_stubborn, +GC_malloc_atomic_uncollectable, GC_malloc_ignore_off_page, +GC_malloc_atomic_ignore_off_page, GC_debug_malloc, +GC_debug_malloc_atomic, GC_debug_malloc_uncollectable, +GC_debug_malloc_stubborn, GC_debug_malloc_ignore_off_page, +GC_debug_malloc_atomic_ignore_off_page, +GC_debug_malloc_replacement: Add GC_ATTR_ALLOC_SIZE attribute +(for the first argument). +* include/gc_gcj.h (GC_gcj_malloc, GC_debug_gcj_malloc, +GC_gcj_malloc_ignore_off_page): Likewise. +* include/gc.h (GC_memalign, GC_realloc, GC_debug_realloc, +GC_debug_realloc_replacement): Add GC_ATTR_ALLOC_SIZE attribute +(for the second argument). +* include/gc.h (GC_malloc, GC_malloc_atomic, GC_strdup, +GC_malloc_uncollectable, GC_malloc_stubborn, GC_memalign, +GC_malloc_atomic_uncollectable, GC_free, GC_base, GC_size, +GC_realloc, GC_expand_hp, GC_set_max_heap_size, +GC_exclude_static_roots, GC_add_roots, GC_remove_roots, +GC_register_displacement, GC_debug_register_displacement, +GC_try_to_collect, GC_malloc_ignore_off_page, +GC_malloc_atomic_ignore_off_page, GC_debug_malloc, +GC_debug_malloc_atomic, GC_debug_strdup, +GC_debug_malloc_uncollectable, GC_debug_malloc_stubborn, +GC_debug_malloc_ignore_off_page, +GC_debug_malloc_atomic_ignore_off_page, GC_debug_free, +GC_debug_realloc, GC_debug_malloc_replacement, +GC_debug_realloc_replacement, GC_finalization_proc, +GC_register_finalizer, GC_debug_register_finalizer, +GC_register_finalizer_ignore_self, +GC_debug_register_finalizer_ignore_self, +GC_register_finalizer_no_order, +GC_debug_register_finalizer_no_order, +GC_register_finalizer_unreachable, +GC_debug_register_finalizer_unreachable, +GC_register_disappearing_link, +GC_general_register_disappearing_link, +GC_unregister_disappearing_link, GC_noop1, GC_warn_proc, +GC_set_warn_proc, GC_ignore_warn_proc, GC_fn_type, +GC_call_with_alloc_lock, GC_stack_base_func, +GC_call_with_stack_base, GC_same_obj, GC_pre_incr, GC_post_incr, +GC_is_visible, GC_is_valid_displacement, GC_same_obj_print_proc, +GC_is_valid_displacement_print_proc, GC_is_visible_print_proc, +GC_malloc_many, GC_CreateThread, GC_beginthreadex, +GC_endthreadex): Comment out (or remove if single and meaningless) +function argument names (to avoid identifiers out of the name +space). +* include/gc_gcj.h (GC_init_gcj_malloc, GC_gcj_malloc, +GC_debug_gcj_malloc, GC_gcj_malloc_ignore_off_page): Likewise. +* include/gc.h (GC_try_to_collect): Update the comment. +* include/gc.h (GC_size, GC_register_my_thread): Add const +qualifier for the argument referent. +* misc.c (GC_size): Likewise. +* pthread_support.c (GC_register_my_thread_inner, +GC_register_my_thread): Likewise. +* win32_threads.c (GC_register_my_thread_inner, +GC_register_my_thread): Likewise. +* include/gc.h (GC_INIT_CONF_ROOTS): New macro for internal use +(define instead of GC_INIT() for Cygwin and AIX). +* include/gc.h (GC_DONT_EXPAND, GC_MAX_RETRIES, +GC_FREE_SPACE_DIVISOR, GC_FULL_FREQ, GC_TIME_LIMIT, GC_IGNORE_WARN, +GC_INITIAL_HEAP_SIZE): Recognize new macro. +* include/gc.h (GC_INIT_CONF_DONT_EXPAND, GC_INIT_CONF_MAX_RETRIES, +GC_INIT_CONF_FREE_SPACE_DIVISOR, GC_INIT_CONF_FULL_FREQ, +GC_INIT_CONF_TIME_LIMIT, GC_INIT_CONF_IGNORE_WARN, +GC_INIT_CONF_INITIAL_HEAP_SIZE): New macro for internal use. +* include/gc.h (GC_INIT): Use GC_INIT_CONF_XXX macros. +* include/gc_mark.h: Prefix GC_H with '_'. +* include/gc_mark.h (GC_least_plausible_heap_addr, +GC_greatest_plausible_heap_addr, GC_debug_header_size): Use GC_API +for the public variable declaration. +* include/new_gc_alloc.h (GC_objfreelist_ptr, GC_aobjfreelist_ptr, +GC_uobjfreelist_ptr, GC_auobjfreelist_ptr): Likewise. +* include/gc_pthread_redirects.h (GC_pthread_create, +GC_pthread_sigmask, GC_dlopen, GC_pthread_join, GC_pthread_detach): +Use GC_API for the wrapper prototype. +* include/gc_pthread_redirects.h (pthread_create, pthread_join, +pthread_detach, pthread_sigmask, dlopen): Undefine unconditionally +before redirecting. +* include/new_gc_alloc.h: Replace GC_incr_mem_freed() with +GC_incr_bytes_freed(); remove FIXME. +* include/private/gc_priv.h (GC_make_closure, +GC_debug_invoke_finalizer, GC_noop): Remove GC_API for the private +function. +* tests/test.c (GC_print_stats): Handle GC_DLL case regardless of +the target. + +* finalize.c (GC_general_register_disappearing_link, +GC_register_finalizer_inner): Remove unnecessary "ifdef THREADS" +guard for LOCK/UNLOCK(). +* finalize.c (GC_general_register_disappearing_link, +GC_register_finalizer_inner): Get GC_oom_fn value before releasing +the lock (to prevent data races). +* gcj_mlc.c (GC_gcj_malloc, GC_debug_gcj_malloc, +GC_gcj_malloc_ignore_off_page): Likewise. +* mallocx.c (GC_generic_malloc_ignore_off_page): Likewise. +* include/gc_inline.h (GC_FAST_MALLOC_GRANS): Use GC_get_oom_fn() +instead of GC_oom_fn (to prevent data races). +* malloc.c (GC_generic_malloc): Likewise. +* mallocx.c (GC_memalign): Likewise. +* pthread_support.c (pthread_create): Likewise. +* gcj_mlc.c (maybe_finalize): Acquire the lock before setting +last_finalized_no value to prevent data races. +* include/gc.h (GC_gc_no, GC_get_gc_no, GC_oom_fn, GC_set_oom_fn, +GC_set_find_leak, GC_set_finalize_on_demand, +GC_set_java_finalization, GC_set_finalizer_notifier, +GC_set_dont_expand, GC_set_full_freq, GC_set_non_gc_bytes, +GC_set_no_dls, GC_set_free_space_divisor, GC_set_max_retries, +GC_set_dont_precollect, GC_set_time_limit, GC_warn_proc): Refine +the comment. +* misc.c (GC_set_oom_fn): Likewise. +* include/gc.h (GC_general_register_disappearing_link): Refine the +comment (replace "soft" word with "weak"). +* misc.c (GC_oom_fn, GC_get_gc_no, GC_get_parallel, +GC_set_finalizer_notifier, GC_set_find_leak): Add the comment. +* misc.c (GC_set_oom_fn, GC_get_oom_fn, GC_set_finalizer_notifier, +GC_get_finalizer_notifier): Use LOCK/UNLOCK to prevent data races. + +* dbg_mlc.c: Guard include with ifndef MSWINCE; include +"private/dbg_mlc.h" before it. +* malloc.c: Likewise. +* dbg_mlc.c (GC_debug_strdup): Use memcpy() instead of strcpy() +for WinCE (since deprecated); evaluate strlen() only once; don't +set errno for WinCE. +* malloc.c (GC_strdup): Likewise. +* dyn_load.c (GC_wnt): Define as macro (FALSE) for WinCE. +* include/gc.h (GC_unregister_my_thread): Refine the comment. +* include/gc.h (GC_uintptr_t, GC_beginthreadex, GC_endthreadex): +Don't declare for WinCE. +* include/gc.h (GC_WINMAIN_WINCE_LPTSTR): New macro (WinCE only). +* include/gc.h (GC_WinMain): Remove GC_API. +* include/gc.h (GC_WinMain): Use GC_WINMAIN_WINCE_LPTSTR for +lpCmdLine. +* tests/test.c (GC_WinMain): Likewise. +* win32_threads.c (main_thread_args, GC_WinMain): Likewise. +* include/gc_config_macros.h (ptrdiff_t): Guard with +ifndef _PTRDIFF_T_DEFINED; define _PTRDIFF_T_DEFINED macro. +* include/private/gc_locks.h: Guard include "atomic_ops.h" with +ifdef GC_PTHREADS (and not GC_WIN32_THREADS). +* mark.c: Include "atomic_ops.h" if PARALLEL_MARK. +* thread_local_alloc.c: Include "atomic_ops.h" if GC_GCJ_SUPPORT. +* win32_threads.c: Include "atomic_ops.h" if MPROTECT_VDB. +* include/private/gc_locks.h: Use include "atomic_ops.h" instead +of include . +* include/private/gc_priv.h: Likewise. +* include/private/gc_locks.h (GC_allocate_ml, GC_need_to_lock): +Don't export (replace GC_API to "extern"). +* win32_threads.c (GC_allocate_ml): Don't export. +* include/private/gc_priv.h (DebugBreak): Define as macro for +WinCE (if not UNDER_CE and DebugBreak is not defined yet). +* include/private/gc_priv.h (UNALIGNED): Rename to UNALIGNED_PTRS +(since "UNALIGNED" is defined in winnt.h of WinCE). +* mark.c (UNALIGNED): Likewise. +* include/private/gcconfig.h (ARM32): Recognize _M_ARM and _ARM_. +* include/private/gcconfig.h (ALIGNMENT): Check always defined. +* include/private/gcconfig.h: Allow GC_WIN32_THREADS for WinCE. +* include/private/thread_local_alloc.h: Define USE_WIN32_SPECIFIC +for WinCE (since __declspec(thread) is unsupported). +* include/private/thread_local_alloc.h (TLS_OUT_OF_INDEXES): +Define for WinCE (if undefined). +* malloc.c (GC_malloc): Remove outdated comment about disabling +signals. +* misc.c: Don't include (since not used anymore and may +break TEXT() macro defined in winnt.h). +* misc.c (GC_init_inner): Don't use GetModuleHandle() and +InitializeCriticalSectionAndSpinCount() for WinCE. +* misc.c (GC_init_inner): Replace GetModuleHandleA() with +GetModuleHandle() (and use TEXT() macro controlled by UNICODE). +* misc.c (LOG_FILE): Remove unused macro; don't use _T() macro. +* misc.c (GC_CreateLogFile): New static function (Win32/WinCE +only); move the code from GC_write(); replace GETENV() with +GetEnvironmentVariable(); replace CreateFileA() with +CreateFile(); use TEXT() macro (for Unicode support); replace +strcat() with memcpy() (since deprecated in WinCE). +* misc.c (GC_write): Define as STATIC. +* win32_threads.c (GC_attached_thread): Likewise. +* misc.c (GC_write): Use GC_CreateLogFile(). +* misc.c: Define vsnprintf macro as StringCchVPrintfA for WinCE. +* misc.c (GC_abort): Try to invoke MessageBoxA() dynamically +(Win32 only) if DONT_USE_USER32_DLL is defined. +* misc.c (GC_abort): Duplicate msg to GC log file (for Win32 and +WinCE). +* misc.c (GC_abort): Use a more user-friendly abort if +NO_DEBUGGING (Win32 only). +* os_dep.c: Include "atomic_ops.h" only if MPROTECT_VDB (and +THREADS). +* os_dep.c (detect_GetWriteWatch): Use TEXT() for GetModuleHandle +(for Unicode support); check GetModuleHandle() result. +* tests/test.c: Don't define assert for WinCE (since may be +redefined by "assert.h" included from libatomic_ops). +* tests/test.c (FAIL): Define as ABORT for all targets (except +for PCR). +* tests/test.c (n_tests): Don't use AO_t. +* tests/test.c (check_heap_stats): Don't cast n_tests. +* tests/test.c (inc_int_counter): New function (for n_tests atomic +incrementation). +* tests/test.c (run_one_test): Test GC_memalign() for all targets. +* tests/test.c (run_one_test): Avoid unbalanced brackets in +#if-#else-#endif blocks. +* tests/test.c (run_one_test): Replace AO_fetch_and_add1() and +private LOCK/UNLOCK with GC_call_with_alloc_lock(inc_int_counter). +* tests/test.c (check_heap_stats): Replace +"if (sizeof(char *) > 4)" with "#if CPP_WORDSZ == 64" to suppress +"unreachable code" compiler warning. +* tests/test.c (WinMain): Set cmd type to LPWSTR (for WinCE +"UNDER_CE" mode); else use LPSTR type (for Win32 and WinCE). +* tests/test.c (thr_window): Replace "L" string prefix with +TEXT(). +* thread_local_alloc.c: Check THREADS is defined (to prevent other +compiler errors and warnings otherwise). +* tests/test.c (WinMain): Recognize GC_NO_DLLMAIN macro (for +GC_use_DllMain()). +* Makefile.direct (GC_NO_DLLMAIN, DONT_IMPORT_GETCURTHREAD): Add +the comments for. +* win32_threads.c (GC_register_my_thread_inner): Recognize +DONT_IMPORT_GETCURTHREAD macro. +* win32_threads.c: Recognize GC_NO_DLLMAIN macro (to exclude +DllMain support if needed). +* win32_threads.c (GC_NO_DLLMAIN): Define implicitly if DllMain +thread registration is unsupported for a given configuration. +* win32_threads.c (GC_use_DllMain): Update the comment; refine +ABORT message. +* win32_threads.c (GC_use_DllMain, +GC_started_thread_while_stopped, GC_register_my_thread_inner, +GC_lookup_thread_inner, GC_delete_gc_thread, +GC_allow_register_threads, GC_lookup_pthread, +GC_push_thread_structures, GC_stop_world, GC_push_all_stacks): +Check for GC_NO_DLLMAIN. +* win32_threads.c (GC_Thread_Rep.tm_in_use, GC_attached_thread, +DllMain): Don't define if GC_NO_DLLMAIN. +* win32_threads.c (GC_stop_world): Declare "i" and "max" local +variables only if not GC_NO_DLLMAIN (to suppress compiler +warning). +* win32_threads.c (GC_mark_thread, start_mark_threads): Use +CreateThread() instead of _beginthreadex() for WinCE. +* win32_threads.c (MARK_THREAD_STACK_SIZE, WINCE_MAIN_STACK_SIZE): +New macros defined (used by start_mark_threads(), WinMain()). +* win32_threads.c (GC_thr_init): Exclude parallel-specific code on +WinCE for now (since getenv(), GetProcessAffinityMask() and +SignalObjectAndWait() are missing on WinCE). +* win32_threads.c (GC_thr_init): replace GetModuleHandleA() with +GetModuleHandle(); replace CreateEventA() with CreateEvent(); use +TEXT() macro (for Unicode support). + +* include/gc.h (GC_has_static_roots_func): New typedef (user filter +callback). +* include/gc.h (GC_register_has_static_roots_callback): Use +GC_has_static_roots_func type. +* dyn_load.c (GC_has_static_roots, +GC_register_has_static_roots_callback): Likewise. +* dyn_load.c (GC_has_static_roots, +GC_register_has_static_roots_callback): Define on all platforms. +* dyn_load.c (GC_register_dynlib_callback, +GC_register_dynamic_libraries, GC_init_dyld): Replace K&R-style +functions definition with the ANSI C one. +* dyn_load.c (GC_register_dynlib_callback): Use new local variable +"callback" (initialized from GC_has_static_roots) to minimize data +races. +* dyn_load.c (GC_register_dynamic_libraries_dl_iterate_phdr, +GC_cond_add_roots): Define as STATIC. +* mark_rts.c (GC_remove_roots_inner): Likewise. +* dyn_load.c (GC_dyld_image_add): Don't call GC_add_roots() for +sections smaller than pointer size (just to avoid acquiring the +lock unnecessarily). +* dyn_load.c (GC_dyld_name_for_hdr): Define unconditionally (not +only for DARWIN_DEBUG). +* dyn_load.c (GC_dyld_image_add): Replace GC_add_roots() call with +LOCK + GC_add_roots_inner() + UNLOCK. +* dyn_load.c (GC_dyld_image_add): Call GC_has_static_roots() user +callback (if set) holding the lock; if it returns 0 then don't call +GC_add_roots_inner() for that region. +* dyn_load.c (GC_register_has_static_roots_callback): Put +"callback" value to GC_has_static_roots on all platforms. +* dyn_load.c (GC_has_static_roots): Update the comments. +* include/gc.h (GC_exclude_static_roots, GC_add_roots, +GC_remove_roots, GC_register_has_static_roots_callback): Likewise. +* include/private/gc_priv.h (struct roots): Likewise. +* include/private/gc_priv.h (GC_remove_roots_inner): Move prototype +to mark_rts.c and declare it as STATIC. +* include/private/gc_priv.h (GC_exclude_static_roots_inner): New +prototype. +* dyn_load.c (GC_register_dynamic_libraries_dl_iterate_phdr): Use +GC_exclude_static_roots_inner() instead of GC_exclude_static_roots. +* misc.c (GC_init_inner): Likewise. +* mark_rts.c (GC_exclude_static_roots_inner): New function (move +all the code from GC_exclude_static_roots(); add the comment. +* mark_rts.c (GC_add_roots_inner, GC_exclude_static_roots_inner): +add alignment assertion for the lower bound; add assertion for the +lower bound to be less than the upper one. +* mark_rts.c (GC_add_roots_inner, GC_exclude_static_roots): Adjust +the upper bound (round down to be of a pointer-aligned value); +return in case of an empty range. +* mark_rts.c (GC_exclude_static_roots): Acquire the lock and call +GC_exclude_static_roots_inner(). +* mark_rts.c (GC_remove_roots): Quickly check the bounds and return +in case of a do-nothing case (before acquiring the lock). + +* finalize.c (GC_fail_count): New external variable declaration. +* finalize.c (GC_reset_finalizer_nested, +GC_check_finalizer_nested): New function declarations (if THREADS +only). +* finalize.c (GC_finalizer_nested, GC_finalizer_skipped): New +static global variables (used internally by GC_finalize() and +GC_check_finalizer_nested()). +* finalize.c (GC_check_finalizer_nested): New static function +definition (only if not THREADS, used internally by +GC_notify_or_invoke_finalizers() to minimize the probability of +a deep recursion when a client finalizer tries to allocate GC +memory). +* finalize.c (GC_finalize): Reset GC_finalizer_nested value (or +call GC_reset_finalizer_nested()) if last heap expansion failed. +* finalize.c (GC_notify_or_invoke_finalizers): Access GC_gc_no, +GC_finalizer_now, GC_finalize_on_demand, GC_finalizer_notifier, +last_finalizer_notification variables holding the lock (to avoid +data races). +* finalize.c (GC_finalizer_notifier): Add comment. +* finalize.c (GC_notify_or_invoke_finalizers): Add "quick" check +for an empty finalization queue (only if THREADS and not +KEEP_BACK_PTRS/MAKE_BACK_GRAPH). +* finalize.c (GC_notify_or_invoke_finalizers): Call +GC_check_finalizer_nested() and skip GC_invoke_finalizers() call +if appropriate. +* include/private/pthread_support.h (GC_Thread_Rep): Add unsigned +finalizer_nested and finalizer_skipped fields (for internal use +by the multi-threaded GC_check_finalizer_nested()). +* win32_threads.c (GC_Thread_Rep): Likewise. +* pthread_support.c (GC_reset_finalizer_nested, +GC_check_finalizer_nested): New function definitions (the +multi-threaded variants of that in finalize.c). +* win32_threads.c (GC_reset_finalizer_nested, +GC_check_finalizer_nested): Likewise. + +* alloc.c (GC_stopped_mark): Remove GC_log_printf("") (not needed +anymore and GCC produces a warning for it). +* alloc.c (GC_stopped_mark): Adjust printf argument type +specifier. +* backgraph.c: Include dbg_mlc.h before ifdef MAKE_BACK_GRAPH (for +the case when the configuration information comes from aconfig +file). +* checksums.c: Likewise. +* include/gc_allocator.h (GC_ATTR_UNUSED): Use "__unused__" +keyword instead of "unused". +* include/gc_allocator.h: Fix typos in comments. +* thread_local_alloc.c: Likewise. +* include/javaxfc.h (GC_finalize_all): Update comment. +* include/private/gc_priv.h (GC_API_PRIV): New macro (defined as +GC_API and serves only as a marker for the private but exported +symbols used by test.c only). +* include/private/gc_priv.h (GC_abort, GC_arrays, GC_is_marked, +GC_printf, GC_err_printf, GC_log_printf): Replace GC_API decl with +GC_API_PRIV one. +* include/private/gc_priv.h (GC_fo_entries): Don't export it +outside a DLL. +* include/private/gc_priv.h (GC_ATTR_FORMAT_PRINTF): New macro +designated to check the arguments correctness of printf-like +functions (currently works only for GCC v3+). +* include/private/gc_priv.h (GC_printf, GC_err_printf, +GC_log_printf): Use GC_ATTR_FORMAT_PRINTF attribute. + +* dyn_load.c (HAVE_DL_ITERATE_PHDR): Break definition from use. +Define for FreeBSD 7.0+. + +* mach_dep.c: Don't include ucontext.h with NO_GETCONTEXT. + +* include/gc_gcj.h (GC_init_gcj_malloc): Improve descriptive +comment. + +* allchblk.c (GC_merge_unmapped): Don't assume that adjacent +free blocks have different mapping status. Correctly handle gap +between blocks. +(GC_split_block): Remove dead code setting hb_flags. Add comment. +(GC_allochblk): Split blocks also in generational-only mode. +* os_dep.c (GC_unmap_gap): Don't really use munmap. + +* include/private/gc_priv.h (GC_unmapped_bytes): Define as 0 for +not USE_MUNMAP case. + +* Makefile.direct (MARK_BIT_PER_OBJ, PRINT_BLACK_LIST, +USE_PROC_FOR_LIBRARIES): Fix typo in the comments. +* Makefile.direct (USE_MMAP, USE_MUNMAP, THREAD_LOCAL_ALLOC, +PARALLEL_MARK, STATIC): Update the comments. +* include/private/gcconfig.h (GC_PREFER_MPROTECT_VDB): New macro +recognized (only if MPROTECT_VDB). +* Makefile.direct (DONT_USE_USER32_DLL, GC_PREFER_MPROTECT_VDB): +Add the comments for. +* os_dep.c (detect_GetWriteWatch): Recognize "GC_USE_GETWRITEWATCH" +environment variable (only if MPROTECT_VDB, if the variable is +unset when GC_PREFER_MPROTECT_VDB macro controls the strategy). +* doc/README.environment (GC_USE_GETWRITEWATCH): New variable. +* include/private/gcconfig.h (MPROTECT_VDB): Add FIXME for +USE_MUNMAP and PARALLEL_MARK cases (to relax the conditions in +the future). +* misc.c (GC_get_heap_size, GC_get_free_bytes): Ignore the memory +space returned to OS (GC_unmapped_bytes). +* include/gc.h (GC_get_heap_size, GC_get_free_bytes): Update the +comments. +* misc.c (GC_get_unmapped_bytes): New API function. +* include/gc.h (GC_get_unmapped_bytes): New API prototype. +* os_dep.c (GC_dirty_init): Move "ifdef GWW_VDB" block out of +"ifdef MSWIN32" one (for Cygwin). + +* pthread_support.c (GC_allow_register_threads): New API function. +* win32_threads.c (GC_allow_register_threads): Likewise. +* include/gc.h (GC_allow_register_threads): New API prototype. +* include/gc.h (GC_register_my_thread, GC_unregister_my_thread): +Update the comments. +* pthread_support.c (GC_register_my_thread): Check the collector +is in the multi-threaded mode. +* win32_threads.c (GC_register_my_thread): Likewise. + +* finalize.c (GC_finalize_all): Always call GC_invoke_finalizers +instead, following Ivan's original patch. + +* allchblk.c (GC_allochblk_nth): Add assertion. +* checksums.c: Add GC_record_fault, GC_was_faulted, +CC_n_faulted_dirty_errors. +(GC_check_dirty): Remove register declarations, print +dirty bit errors on faulted pages. +* os_dep.c (GC_write_fault_handler): Call GC_record_fault(). +* os_dep.c (GC_remove_protection): Compute index correctly. + + +== [7.2alpha2] 2009-06-12 == + +* dbg_mlc.c (GC_print_smashed_obj): Convert a group of printf() +calls into a single one (for output atomicity). +* typd_mlc.c (GC_calloc_explicitly_typed): Don't declare and use +GC_finalization_failures variable; check the result of +GC_general_register_disappearing_link() (for lack of memory) +instead. +* finalize.c (GC_finalization_failures): Remove unused global +variable. +* finalize.c (GC_general_register_disappearing_link, +GC_general_register_disappearing_link): Don't update the value of +GC_finalization_failures (since unused). +* include/private/gc_pmark.h (PUSH_ONE_CHECKED_STACK, +GC_PUSH_ONE_STACK, GC_PUSH_ONE_HEAP): The first parameter is of +word type now (as FIXUP_POINTER requires numeric argument). +* finalize.c (GC_ignore_self_finalize_mark_proc): GC_PUSH_ONE_HEAP +requires the first parameter of word type. +* mark.c (PUSH_GRANULE): Likewise. +* mark.c (GC_push_one, GC_push_all_eager): Likewise. +* finalize.c (GC_finalize_all): Call GC_invoke_finalizers() or +GC_finalizer_notifier directly, instead +of GC_INVOKE_FINALIZERS() to prevent infinite looping. +* include/javaxfc.h: Clarify GC_finalize_all comment. +* gcj_mlc.c: Include gc_pmark.h before "ifdef GC_GCJ_SUPPORT" (not +after) for configuration information. +* gcj_mlc.c (GC_gcj_malloc_ignore_off_page): Add comment. +* gcj_mlc.c (GC_gcj_malloc_ignore_off_page): Check "op" local +variable for NULL before dereferencing it, return GC_oom_fn() in +this case. +* typd_mlc.c (GC_malloc_explicitly_typed, +GC_malloc_explicitly_typed_ignore_off_page): Transform the code to +suppress compiler warning (for uninitialized "lg" variable). + +* win32_threads.c (GC_unregister_my_thread): add false assertion +in unreachable code. + +* pthread_support.c (GC_inner_start_routine): Don't release the +GC lock between GC_register_my_thread_inner() and +GC_init_thread_local() calls (post the "registered" even after +calling GC_init_thread_local()). +* win32_threads.c (GC_register_my_thread, GC_unregister_my_thread): +Use GC_lookup_thread_inner() instead of GC_lookup_thread() and +acquire the GC lock only once. +* win32_threads.c (GC_thr_init): Call GC_register_my_thread_inner() +directly instead of GC_register_my_thread() since I_HOLD_LOCK +and our (main) thread is not registered yet (add assertion for it). +* win32_threads.c (GC_init_parallel): Call GC_lookup_thread_inner() +directly instead of GC_lookup_thread() (since I_HOLD_LOCK). +* win32_threads.c (GC_lookup_thread): Remove unused function. +* win32_threads.c: Remove "#error GC_DLL untested with Cygwin". +* win32_threads.c (GC_win32_dll_threads): Define as FALSE macro +also if THREAD_LOCAL_ALLOC or GC_PTHREADS. +* win32_threads.c (GC_use_DllMain): Call ABORT also if GC_PTHREADS +(for Cygwin). +* win32_threads.c (GC_push_stack_for): Add parentheses around "&&" +(inside GC_ASSERT) to prevent compiler warning. +* win32_threads.c (GC_push_all_stacks): Remove FIXME for +PARALLEL_MARK. +* win32_threads.c (MAX_MARKERS, GC_markers): Move the definitions +to a place before GC_get_next_stack(). +* win32_threads.c (marker_sp, marker_bsp): New static arrays (same +as in pthread_support.c). +* win32_threads.c (marker_last_stack_min): New static arrays (the +same semantics as for last_stack_min of GC_Thread_Rep). +* win32_threads.c (GC_get_next_stack): Handle marker threads. +* win32_threads.c (GC_mark_thread): Save the current stack pointer +to marker_[b]sp. +* win32_threads.c (start_mark_threads): Initialize +marker_last_stack_min elements (to "unset" value). + +* misc.c (GC_set_oom_fn, GC_set_all_interior_pointers, +GC_set_finalize_on_demand, GC_set_java_finalization, +GC_set_finalizer_notifier, GC_set_dont_expand, GC_set_full_freq, +GC_set_no_dls, GC_set_free_space_divisor, GC_set_max_retries, +GC_set_dont_precollect, GC_set_time_limit, GC_set_warn_proc): +Change return type to void (these API functions no longer return +the old value). +* include/gc.h: Likewise. +* tests/test.c (main, WinMain, test): Remove explicit cast to void +for GC_set_warn_proc(). +* misc.c (GC_get_oom_fn, GC_get_all_interior_pointers, +GC_get_finalize_on_demand, GC_get_java_finalization, +GC_get_finalizer_notifier, GC_get_dont_expand, GC_get_full_freq, +GC_get_no_dls, GC_get_free_space_divisor, GC_get_max_retries, +GC_get_dont_precollect, GC_get_time_limit, GC_get_warn_proc): New +API functions (to get the current value of the corresponding R/W +public variables). +* include/gc.h: Likewise. +* include/gc.h (GC_set_warn_proc, GC_set_free_space_divisor): +Update the comment. +* misc.c (GC_ignore_warn_proc): New API call-back function. +* include/gc.h (GC_ignore_warn_proc): Likewise. +* misc.c (GC_set_find_leak, GC_get_find_leak, GC_set_non_gc_bytes, +GC_get_non_gc_bytes): New API setter and getter functions (for the +public GC_find_leak and GC_non_gc_bytes variables, respectively). +* include/gc.h: Likewise. +* include/gc.h (GC_memalign): Add proto to GC API. +* mallocx.c (GC_memalign): Use GC_API, GC_CALL for the definition. +* tests/test.c (run_one_test): Test GC_memalign() on Win32 too, +remove GC_memalign() proto. +* misc.c (GC_write): Use multi-byte (A) variants of Win32 +GetModuleFileName() and CreateFile(). +* tests/test.c (main): Replace K&R-style function definition with the +ANSI C one. + +* include/private/gcconfig.h (PLATFORM_ANDROID): New macro +recognized (for Linux on ARM32 without glibc). +* include/private/gcconfig.h (STRTOULL): Define for all targets +(define as "strtoul" for most targets except for LLP64/Win64). +* misc.c (GC_init_inner): Use STRTOULL instead of atoi/atol() +(cast the result to word type) to decode values of "GC_TRACE", +"GC_INITIAL_HEAP_SIZE", "GC_MAXIMUM_HEAP_SIZE" environment +variables. + +* include/gc_allocator.h: Add gc_allocator_ignore_off_page. +* tests/test_cpp.cc: Add call to gc_allocator_ignore_off_page. + +* win32_threads.c (GC_release_mark_lock): Correct misspelling of +AO_load in assertion. + +* win32_threads.c (MAX_THREADS): Define as 1 if GC_win32_dll_threads +is defined as FALSE (otherwise the size of dll_thread_table is near +200 KiB for 32-bit). +* win32_threads.c (GC_use_DllMain): Optimize for THREAD_LOCAL_ALLOC. +* win32_threads.c (GC_Thread_Rep): Add backing_store_end and +backing_store_ptr fields for IA64 support. +* win32_threads.c (GC_register_my_thread_inner): Set +backing_store_end field to reg_base value for IA64 (same as in +pthread_support.c). +* win32_threads.c (SET_PTHREAD_MAP_CACHE): Put parentheses in the +"right" places, remove ';'. +* win32_threads.c (GC_fault_handler_lock): Declare only +if MPROTECT_VDB (and not WinCE). +* win32_threads.c (GC_suspend): Acquire and release +GC_fault_handler_lock only if MPROTECT_VDB (and not WinCE). +* win32_threads.c (GC_suspend): Define as STATIC. +* win32_threads.c (GC_push_stack_for): Fix WARN() format specifier +(should be word-compliant, "%p" is used w/o "0x"), don't cast sp. +* win32_threads.c (GC_push_all_stacks): Convert a group of printf() +calls into a single one (for output atomicity). +* win32_threads.c (GC_get_next_stack): Unprotect thread descriptor +before altering its last_stack_min ("thread" variable is added). +* win32_threads.c (GC_get_next_stack): Remove unnecessary checks for +"s" is non-NULL. +* win32_threads.c (GC_get_next_stack): Don't call GC_may_be_in_stack +if WinCE. +* win32_threads.c (GC_get_next_stack): Pass current_min value to +GC_get_stack_min as-is (without -1). +* win32_threads.c (GC_wait_marker): Remove FIXME and use "release" +version of AO_fetch_and_sub1(). +* win32_threads.c (GC_win32_start_inner, GC_win32_start): convert int +to pointer (and vice versa) thru word type to suppress warnings. +* win32_threads.c (GC_mark_mutex_waitcnt): Fix comment, always +access atomically. +* misc.c: Change GC_THREADS tests back to THREADS. + +* allchblk.c (GC_print_hblkfreelist, GC_dump_regions): Convert +a group of printf() calls into a single one (for output atomicity). +* include/gc.h (GC_set_all_interior_pointers, GC_set_full_freq, +GC_set_time_limit): New prototypes. +* misc.c (GC_set_all_interior_pointers, GC_set_full_freq, +GC_set_time_limit): New public setter/getter functions. +* include/gc.h: Fix (and remove outdated) comments for thread-local +allocation. +* include/gc.h: Fix typos in comments. +* misc.c (GC_init_inner, GC_printf): Likewise. +* include/gc.h (GC_unregister_disappearing_link): Refine comment. +* include/gc.h (GC_stack_base): Recognize _M_IA64 macro. +* misc.c (GC_stack_last_cleared, GC_min_sp, GC_high_water, +GC_bytes_allocd_at_reset, DEGRADE_RATE): Define only if THREADS. +* misc.c (GC_stack_last_cleared, GC_min_sp, GC_high_water, +GC_bytes_allocd_at_reset): Define as STATIC. +* misc.c (GC_get_heap_size, GC_get_free_bytes, +GC_get_bytes_since_gc, GC_get_total_bytes): Acquire the GC lock to +avoid data races. +* misc.c (GC_write_cs): Define only if THREADS (Win32/WinCE only). +* misc.c (GC_init_inner): Initialize GC_write_cs only if THREADS. +* misc.c (GC_init_inner): Use GC_INITIAL_HEAP_SIZE (if available) to +set the default initial value of initial_heap_sz. +* misc.c (GC_deinit): Destroy GC_write_cs only if THREADS. +* misc.c (GC_init_inner): Fix WARN() format specifier (should be +word-compliant, "%p" is used w/o "0x"). +* misc.c (GC_init_inner): Don't recognize "GC_PAUSE_TIME_TARGET" +environment variable if SMALL_CONFIG. +* misc.c (GC_init_inner): Recognize "GC_FULL_FREQUENCY" environment +variable to set initial GC_full_freq value (if not SMALL_CONFIG). +* doc/README.environment (GC_FULL_FREQUENCY): Add information. +* doc/README.environment (GC_MARKERS): Refine information. +* misc.c (GC_init_inner): Change GC_ASSERT to GC_STATIC_ASSERT where +possible. +* misc.c (IF_NEED_TO_LOCK): New macro (instead of GC_need_to_lock). +* misc.c (GC_write): Use IF_NEED_TO_LOCK for handling GC_write_cs. +* misc.c (GC_abort): Don't define if SMALL_CONFIG. +* misc.c (GC_abort): Directly use WRITE() instead of GC_err_printf() +(to prevent possible infinite recursion). + +* finalize.c (finalization_mark_proc): Replace K&R-style declaration +with ANSI C one. +* finalize.c (GC_grow_table, GC_register_finalizer_inner, +GC_enqueue_all_finalizers): Remove outdated comments about disabling +signals. +* finalize.c (GC_general_register_disappearing_link): Fix assertion +to catch NULL "obj" value. +* finalize.c (GC_unregister_disappearing_link): Check "link" +alignment before gaining the lock. +* finalize.c (GC_finalize): Refine comment. +* finalize.c (GC_finalize): Fix WARN() format specifier (should be +word-compliant, "%p" is used w/o "0x"). +* finalize.c (GC_invoke_finalizers): Initialize "bytes_freed_before" +variable (to 0) to suppress compiler warning. +* include/gc_gcj.h (MARK_DESCR_OFFSET): Move to private/gc_pmark.h. +* include/gc_gcj.h: add "extern C" header and tail. +* include/private/gc_pmark.h: Remove GC_do_parallel_mark(), +GC_help_wanted, GC_helper_count, GC_active_count declarations (move +the comments to the place where these symbols are defined in mark.c). +* mark.c: Add STATIC GC_do_parallel_mark() declaration (for use by +GC_mark_some_inner, if PARALLEL_MARK only). +* mark.c (GC_mark_some_inner, GC_help_wanted, GC_helper_count, +GC_active_count, GC_do_parallel_mark): Define as STATIC. +* pthread_support.c (GC_mark_thread): Likewise. +* typd_mlc.c (GC_explicit_typing_initialized, GC_explicit_kind, +GC_array_kind, GC_ext_descriptors, GC_ed_size, GC_avail_descr, +GC_typed_mark_proc_index, GC_array_mark_proc_index, GC_eobjfreelist, +GC_arobjfreelist): Likewise. +* include/private/gc_pmark.h (PUSH_CONTENTS_HDR): Change GC_ASSERT +for HBLKSIZE to GC_STATIC_ASSERT. +* mark.c (GC_noop): Define for Borland C the same as for Watcom. +* mark.c (GC_noop, GC_mark_and_push): Add ARGSUSED tag. +* pthread_support.c (GC_do_blocking_inner): Likewise. +* mark.c (GC_mark_from): Initialize "limit" (to 0) in the default +switch branch to suppress compiler warning. +* mark.c (GC_return_mark_stack): Append new-line to printf message. +* mark.c: Remove unused GC_true_func(), GC_PUSH_ALL(). +* pthread_support.c (GC_mark_thread): Add dummy "return 0" to +suppress compiler warning. +* pthread_support.c (start_mark_threads): Move the code limiting +"GC_markers" value (and printing a warning) to GC_thr_init(). +* pthread_support.c (GC_thr_init): Silently limit "GC_markers" value +if based on the number of CPUs. +* pthread_support.c (GC_thr_init): Treat incorrect "GC_markers" +values as one. +* pthread_support.c (GC_register_my_thread_inner): Add a check for +"stack_end" is non-NULL (the same as in win32_threads.c). +* pthread_support.c (pthread_create): Call GC_oom_fn before giving up +with ENOMEM. +* thread_local_alloc.c (return_single_freelist): Convert "for" loop +to "while" one to suppress "possible extraneous ';'" warning. + +* darwin_stop_world.c (GC_push_all_stacks): Recognize ARM32. +* include/private/gc_priv.h (GC_THREAD_STATE_T): Define for ARM32 +(Darwin only). +* include/private/gcconfig.h: Add machine-specific part for DARWIN. +* include/private/gcconfig.h (ARM32): Define config parameters for +DARWIN (iPhone). + +* alloc.c (GC_FULL_FREQ, GC_DONT_EXPAND, GC_FREE_SPACE_DIVISOR, +GC_TIME_LIMIT): New macros (used to control the default initial +values of GC_full_freq variable, GC_dont_expand, +GC_free_space_divisor, GC_time_limit respectively). +* include/private/gc_priv.h (TIME_LIMIT): Remove macro (replaced +with GC_TIME_LIMIT in alloc.c). +* alloc.c (GC_need_full_gc, GC_stopped_mark, GC_finish_collection): +Define as STATIC. +* mark_rts.c (GC_push_current_stack, GC_push_gc_structures): Likewise. +* include/private/gc_priv.h (GC_stopped_mark, GC_finish_collection): +Move the prototypes to alloc.c, make STATIC. +* include/private/gc_priv.h (GC_push_current_stack, +GC_push_gc_structures, GC_push_regs_and_stack): Remove prototypes +(move the comments to the places where these functions are defined). +* mach_dep.c (GC_push_regs_and_stack): Move to mark_rts.c and define +as STATIC. +* alloc.c (GC_timeout_stop_func, GC_stopped_mark, +GC_print_heap_sects): Convert a group of printf() calls into +a single one (for output atomicity). +* mark_rts.c (GC_print_static_roots): Likewise. +* alloc.c (GC_stopped_mark): Output blank line (when logging) for +convenience to delimit collections. +* alloc.c (GC_clear_a_few_frames): Rename NWORDS to CLEAR_NWORDS; +make "frames" local variable volatile (to prevent optimization). +* alloc.c (GC_try_to_collect_inner, GC_stopped_mark, +GC_finish_collection, GC_allocobj): Remove outdated comments about +disabling signals. +* include/private/gc_priv.h (GC_register_displacement_inner, +GC_gcollect_inner): Likewise. +* alloc.c (GC_try_to_collect_inner, GC_stopped_mark, +GC_finish_collection): Initialize "start_time" local variable (to 0) +to suppress compiler warning. +* mark_rts.c (GC_add_roots_inner): Likewise. +* alloc.c (GC_RATE, MAX_PRIOR_ATTEMPTS): Guard with "ifndef". +* include/private/gc_priv.h (clock, GC_stop_world, GC_start_world, +GC_acquire_mark_lock, GC_release_mark_lock, GC_notify_all_builder, +GC_wait_for_reclaim, GC_notify_all_marker, GC_wait_marker): Replace +K&R-style function prototypes with ANSI C one. +* include/private/gc_priv.h (ABORT): Define as DebugBreak() for +Win32/WinCE if SMALL_CONFIG (the same as in GC_abort()). +* include/private/gc_priv.h (ROUNDED_UP_WORDS, abs): Remove unused +macros. +* include/private/gc_priv.h (GC_noop): Declare for Borland C the +same as for Watcom. +* mark_rts.c (GC_push_conditional_with_exclusions): Add ARGSUSED tag. + +* dbg_mlc.c (GC_store_debug_info, GC_store_debug_info_inner): Remove +outdated comment about disabling signals. +* mallocx.c (GC_malloc_uncollectable, +GC_malloc_atomic_uncollectable): Likewise. +* os_dep.c: Likewise. +* dbg_mlc.c (GC_debug_change_stubborn, GC_debug_end_stubborn_change): +Add ARGSUSED tag. +* pthread_stop_world.c (GC_suspend_handler, +GC_suspend_handler_inner): Likewise. +* dbg_mlc.c (GC_debug_free, GC_debug_realloc): Fix printf message. +* dbg_mlc.c (GC_debug_realloc): Set "result" to NULL in the default +switch branch to suppress compiler warning. +* dyn_load.c (GC_init_dyld): Use ABORT() instead of GC_abort(). +* include/private/darwin_semaphore.h (sem_init): Likewise. +* include/javaxfc.h: Replace "GC_H" with "_GC_H". +* include/private/dbg_mlc.h (GC_has_other_debug_info, +GC_store_debug_info): Replace K&R-style function prototypes with ANSI +C one. +* include/private/gcconfig.h (GC_FreeBSDGetDataStart, real_malloc, +GC_win32_get_mem, GC_wince_get_mem, GC_unix_get_mem): Likewise. +* include/private/pthread_support.h (GC_stop_init): Likewise. +* include/private/gcconfig.h: Refine comment about setting +GC_stackbottom. +* include/private/gcconfig.h (FIXUP_POINTER): Put parentheses in the +"right" places. +* include/private/pthread_support.h (GC_Thread_Rep): Refine comment +for "stack_end" field. +* mallocx.c (GC_malloc_uncollectable, +GC_malloc_atomic_uncollectable): Remove cast to undefined "hbklk". +* os_dep.c (GC_USE_MEM_TOP_DOWN): New macro (for setting +GC_mem_top_down to MEM_TOP_DOWN for debug purposes). +* os_dep.c (GC_gww_read_dirty, catch_exception_raise): Fix WARN() +format specifier (should be word-compliant, "%p" is used w/o "0x"). +* pthread_stop_world.c (GC_suspend_handler_inner): Likewise. +* os_dep.c (GC_dirty_init): Append new-line to printf messages. +* os_dep.c (GC_mprotect_thread): Fix GC_err_printf message. +* os_dep.c (GC_save_callers): Change GC_ASSERT to GC_STATIC_ASSERT. +* pthread_stop_world.c (GC_retry_signals, GC_suspend_ack_sem): Define +as STATIC. +* pthread_stop_world.c (GC_push_all_stacks): Add assertion for that +"thread_blocked" is not set for the current thread. +* real_malloc.c: Add "extern GC_quiet" to suppress compiler warning. +* reclaim.c (GC_reclaim_all): Initialize "start_time" (to 0) to +suppress compiler warning. + +* tests/test.c (check_heap_stats): Avoid unbalanced brackets in ifdef. + +* win32_threads.c: restructure parallel marking mutex initialization. +* win32_threads.c, alloc.c, darwin_stop_world.c, mallocx.c, mark.c, +pthread_stop_world.c, pthread_support.c: Add runtime conditions +on GC_parallel were appropriate. +* pthread_support.c: Condition marker_bsp on ia64. +(GC_segment_is_thread_stack): Fix loop upper bound. +* reclaim.c: Limit some assertions to PARALLEL_MARK. +* pthread_support.c: Don't acquire mark lock for thread-local +allocation. +* include/private/gc_priv.h: Don't define parallel mark sync +support just for THREAD_LOCAL_ALLOC. + +* include/private/gcconfig.h: refine MINGW32 test. +* mark.c: Add win64/gcc tests. + +* test.c (fork_a_thread, reverse_test, alloc8bytes, tree_test, +typed_test, run_one_test, check_heap_stats, main, test): Replace +all K&R-style function definitions with ANSI C ones. +* trace_test.c (main): Likewise. +* test.c (GC_COND_INIT): Define as GC_INIT() also in case of +THREAD_LOCAL_ALLOC. +* test.c (reverse_test): Call fork_a_thread() only if GC_PTHREADS +or GC_WIN32_THREADS; remove fork_a_thread() macros definition. +* test.c (reverse_test): Use "volatile" when clearing "b" and "c" +local variables (to suppress "assigned value is never used" +compiler warning). +* test.c (tree_test): Use public GC_noop1() instead of private +GC_noop(). +* test.c (typed_test): Likewise. +* test.c (check_heap_stats): Define and assign value to +"late_finalize_count" local variable only if its value is used +(if FINALIZE_ON_DEMAND defined). +* test.c (main): Remove DJGPP-specific initialization of +GC_stackbottom (not needed anymore, handled in gcconfig.h). +* trace_test.c: Guard #define GC_DEBUG with #ifndef. +* trace_test.c: Include "gc_backptr.h". +* trace_test.c (main): Call GC_INIT(). +* trace_test.c (main): Add "return 0" statement. + +* dyn_load.c (GC_register_dynlib_callback): Use new index j +instead of i in the inner loop. + +* tests/test.c: Increment n_tests with fetch_and_add when possible, +avoiding need to export lock. + +* include/gc_pthread_redirects.h: +- dlfcn.h is included for dlopen() proto before undefining +"dlopen" (so, it's possible now to include dlfcn.h after +gc.h from user code); +- GC_dlopen() proto is added (except for Darwin as +it's missing there); +- "dlopen" is explicitly undefined (before its redefinition). +* include/gc.h: +- "process.h" is included besides "windows.h" +(for _beginthreadex/_endthreadex); win32 only. +- GC_NO_THREAD_DECLS is moved to the right place +(before closing "extern C"). +* pthread_support.c: Fix out of memory handling for Thread_Reps. +* win32_threads.c: Don't include process.h on winCE, +improve out of memory handling for thread structures, don't +define GC_beginthreadex and GC_endthreadex for winCE. + +* tests/test.c: Change gcj vtable decriptor type from size_t to +GC_word. + +* gcj_mlc.c: Add comment. +* tests/test.c: Change NTEST to NTHREADS. Fork 5 threads by default. +Run reverse_test a second time in each thread.Add comments. +Don't rely on AO_fetch_and_add. + +* dyn_load.c (GC_register_dynlib_callback, +GC_register_dynamic_libraries_dl_iterate_phdr): Add support +for GNU_PT_RELRO relocations. + +* Makefile, Makefile.direct: GC_SOLARIS_PTHREADS was replaced +by GC_SOLARIS_THREADS. +* include/gc.h: Improve finalizer documentation. +* mips_sgi_mach_dep.s: Replace _MIPS_SIM_ABI32 with _ABIO32. +* pthread_stop_world.c, Makefile.dj: Fix typos. + +* win32_threads.c (GC_new_thread): Make first_thread +visible to the whole file. +(UNPROTECT): New macro. +(GC_push_stack_for, GC_suspend, GC_start_world): unprotect +thread structures before writing. +(GC_suspend): Acquire GC_fault_handler_lock before suspending +thread. +* os_dep.c: export GC_fault_handler_lock. +(GC_remove_protection): Check if already unprotected. + +* doc/README.win32: Add OpenWatcom warning. +* include/private/gcconfig.h: Really check it in. + +* os_dep.c (GC_get_stack_base, windows): Replace with Dave Korn's +code from gcc version. +* os_dep.c: make gc compilable (optionally) for Cygwin with +GetWriteWatch-based virtual dirty bit implementation ("os_dep.c" file). +* os_dep.c: Make non-win32 GC_write_fault_handler STATIC. +* mark.c (GC_noop): fix declaration definition mismatch for DMC. +* include/private/gcconfig.h: Enable MPROTECT_VDB and GWW_VDB for +Watcom (Win32 only). It works. + +* mach_dep.c: Don't use __builtin_unwind_init for register +state on PowerPC/Darwin. + +* doc/gcdescr.html: Improve description of object freelist +structure. +* include/private/gc_priv.h: Fix comment for _size_map. + +* os_dep.c (GC_linux_stack_base): Relax sanity test. + +* include/private/gc_pmark.h (PUSH_CONTENTS_HDR for +MARK_BIT_PER_OBJ): Add missing backslash before eoln. + +* misc.c (GC_set_warn_proc): Implicitly intialize GC on +non-Cygwin win32. + +* configure.ac: Enable thread-local allocation for sparc-linux. + +* alloc.c (GC_try_to_collect): Remove duplicate initialization +check. +* malloc.c (GC_generic_malloc): Remove lw to eliminate single- +threaded warnings. +* mallocx.c (GC_generic_malloc_ignore_off_page): Likewise. + +* allchblk.c, backgraph.c, dbg_mlc.c, dyn_load.c, +finalize.c, include/private/gc_pmark.h, malloc.c, mark.c, +os_dep.c, pthread_stop_world.c, pthread_support.c, reclaim.c, +thread_local_alloc.c. +* misc.c: Refine comment. + +* os_dep.c: Define GC_GWW_BUF_LEN more intelligently. Add FIXME +comment. + +* win32_threads.c (GC_push_stack_for): Yet another attempt +at the stack_min finding logic. Try to clean up the existing code +while minimizing VirtualQuery calls. +(GC_win32_start_inner): Register thread before GC_printf. +Produce more output with DEBUG_THREADS. +*include/gc.h: Update obsolete comments. + +* tests/test.c: +(gcj_class_struct2): Use cast instead of l suffix. +Cast GetLastError to int in various places. +Avoid unused result warning from incr/decr macros. +Add cast for fake_gcj_mark_proc. +Cast GC_gc_no to unsigned in printf. + +* include/gc.h: Fix two typos in comments. + +* finalize.c: Fix typo in comment. + +* blacklst.c (GC_print_source_pointer): Don't call GC_print_heap_obj +with lock. + +* reclaim.c: (GC_reclaim_block): Scan even nearly full blocks +if we are checking for leaks. + +* win32_threads.c: Remove mark lock spinning. +* win32_threads.c, pthread_support.c: Update GC_unlocked_count, +GC_spin_count, and GC_block_count using atomic operations. +* tests/test.c: Declare n_tests as AO_t only if we have threads. + +* win32_threads.c: Support PARALLEL_MARK. Make printf arg +types agree with format specifiers. +Add STATIC for GC_threads. +* include/private/gcconfig.h: Add FIXME comment. +* tests/test.c (run_ine_test): Replace LOCK/UNLOCK use with +AO_fetch_and_add1_full. Declare n_tests as AO_t. +(WinMain): Don't call GC_use_DllMain. +with PARALLEL_MARK or THREAD_LOCAL_ALLOC. + +* alloc.c (GC_try_to_collect_inner): Don't print redundant +GC_bytes_allocd and GC_gc_no. +(GC_stopped_mark): Print average world stop time. +* include/private/gc_priv.h (MS_TIME_DIFF): Add cast. + +* misc.c, doc/README.environment: Add support for +GC_FREE_SPACE_DIVISOR and GC-disable-incremental. +* include/gc.h: Make GC_set_free_space_divisor correspond to +(somewhat unfortunate) reality. + +(Mostly improves LLP64 support.) +* backgraph.c, checksums.c, dbg_mlc.c, finalize.c, mark.c, +misc.c, reclaim.c: Changed some int and long type to word or size_t +(and vice versa where appropriate) +* gcj_mlc.c, include/private/dbg_mlc.h, include/private/gcconfig.h, +include/private/thread_local_alloc.h, mark.c, +misc.c, thread_local_alloc.c, win32_threads.c: Added intermediate +casts to word type when casting from int to pointer (or pointer +to int, or data pointer to code pointer) - just to remove the +corresponding compiler warning. +* ptr_chck.c (GC_is_visible): cast int const to word type to +prevent left shift overflow. +* os_dep.c: change the type of GC_mem_top_down global variable +(containing a flag) to DWORD. +* include/gc_config_macros.h: define GC_SOLARIS_THREADS if GC_THREADS +is defined on SunOS x86_64. +* misc.c (GC_init_size_map): Ifdef out GC_ASSERT as a workaround +for VC++ 2008 amd64 (v15.00.21022.08 for x64) compiler bug +(the compiler gets hung if invoked with -Ox -D +ALL_INTERIOR_POINTERS -D GC_ASSERTIONS) +* backgraph.c: cast GC_gc_no value to unsigned short when +assigned/compared to height_gc_no field of back_edges. +* os_dep.c (GC_remove_protection): Add ARGSUSED. +* win32_threads.c (GC_thread_exit_proc): Remove unused local +variable. +* mark.c (GC_check_dirty): Move declaration out of func body. + +* doc/gcinterface.html: Improve REDIRECT_MALLOC documentation. +* include/gc.h (GC_register_my_thread): Improve comment. + +* Makefile.direct: Add comment for -DCHECKSUMS. + +* thread_local_alloc.c, include/private/thread_local_alloc.h: +Fix typos in comments. +* finalize.c: Declare mark_procs and GC_register_finalizer_inner +STATIC. +* malloc.c (GC_free): Move size calculation below assertion. + +* win32_threads.c (GC_get_stack_min, GC_may_be_in_stack): +Add one entry VirtualQuery cache, I_HOLD_LOCK assertions. +(GC_push_stack_for, GC_get_next_stack) : Hopefully fix WINCE support. + +* finalize.c (GC_general_register_disappearing_link): Add +assertion. +* malloc.c (GC_generic_malloc): Round lb to granules, not words. +* mallocx.c (GC_generic_malloc_ignore_off_page): Round lb to +granules, not words. + +* mach_dep.c (NO_GETCONTEXT): Define for sparc linux. +* configure.ac: Define mach_dep for sparc-linux. + +* mark_rts.c (GC_approx_sp): Use volatile to avoid common +warning. + +* dyn_load.c (GC_cond_add_roots): Fix GC_get_next_stack argument +order. + +* alloc.c, dbg_mlc.c, dyn_load.c, finalize.c, gcj_mlc.c, +include/gc.h, include/gc_config_macros.h, include/gc_cpp.h, +include/gc_gcj.h, include/gc_mark.h, include/gc_typed.h, +include/javaxfc.h, include/private/gc_locks.h, +include/private/gc_priv.h, malloc.c, mallocx.c, mark.c, mark_rts.c, +misc.c, obj_map.c, os_dep.c, pthread_support.c, ptr_chck.c, +stubborn.c, tests/test.c, thread_local_alloc.c, typd_mlc.c +win32_threads.c: Add GC_CALL and GC_CALLBACK macro invocations. +* test.c: Remove some old K&R code. + +* win32_threads.c (GC_may_be_in_stack): New. (GC_Thread_Rep): +Add last_stack_min. (GC_push_stack_for): Use last_stack_min. +(GC_get_next_stack): Add limit argument, use_last_stack_min. +(GC_suspend): make stack_base assignment conditional. +* dyn_load.c (win32 GC_cod_add_roots): Pass limit to +GC_get_next_stack. +* configure_atomic_ops.sh: Remove. +* build_atomic_ops.sh, build_atomic_ops.sh.cygwin, doc/README.win32, +Makefile.direct: Partially support build directories whose path +name contains blanks. +* Makefile.am: Support new files (build_atomic_ops.sh, +build_atomic_ops.sh.cygwin) + +* include/private/gc_locks.h, include/private/gc_pmark.h, +include/private/gc_priv.h, include/private/gcconfig.h, +mach_dep.c, mark_rts.c, misc.c, os_dep.c, pthread_stop_world.c, +pthread_support.c, thread_local_alloc.c, typd_mlc.c, win32_threads.c: +Fix comments. + +* pthread_support.c: Comment out LOCK_STATS. +* include/gc.h: Fix comments. + +* misc.c (GC_init_inner): Enable GC_LOG_FILE on Cygwin. +* include/private/gcconfig.h: Consider USE_MMAP for Cygwin. +* os_dep.c (GC_get_main_stack_base): Use alternate definition +with USE_MMAP. +* include/private/gc_priv.h: Sometimes define SETJMP on Cygwin. + +* doc/README: Make it clearer when Makefile.direct is assumed. +* cord/cord.am: install include/cord.h. + +* win32_threads.c (GC_pthread_join, GC_pthread_start_inner): +Remove unused variables. +* darwin_stop_world.c: Always declare GC_thr_init(). +* dbg_mlc.c (GC_debug_free_inner): Don't touch oh_sz if +SHORT_DBG_HDRS is defined. +* include/private/gc_pmark.h (OR_WORD_EXIT_IF_SET, parallel +mark, USE_MARK_BITS version): Refer to correct parameter name. + +* finalize.c (GC_general_register_disappearing_link): Remove +redundant code. +* gcj_mlc.c (GC_init_gcj_malloc): Add cast to signed. +* os_dep.c: (GC_write_fault_handler): Remove remaining +references to deleted variable "code". Remove redundant +FREEBSD definitions. +* include/private/gcconfig.h (GWW_VDB): Define for X86_64 when +defined for X86. (STATIC): Define as "static" with NO_DEBUGGING. + +* include/private/gc_priv.h: Update MAX_HEAP_SECTS. + +* dbg_mlc.c (GC_print_smashed_obj): Increase robustness with +smashed string, (GC_debug_free_inner): Mark as free. +* mallocx.c (GC_malloc_many): Always clear new block if +GC_debugging_started. +* reclaim.c: Move GC_debugging_started from +GC_reclaim_small_nonempty_block() to GC_reclaim_generic(), +which is also called directly. +* doc/README: Fix spelling error. Update license summary. +* include/gc.h (GC_PRE_INCR3, GC_POST_INCR3): add (void **) casts. +* tests/test.c: Don't define GC_DEBUG if already defined. + +* doc/simple_example.html: update --enable-full-debug reference, +Make HTML formatting standards compliant. +* doc/debugging.html, doc/leak.html: Fix HTML formatting bugs. +* doc/gcinterface.html: specify encoding. + +* doc/simple_example.html: Update thread-local allocation +description. + +* configure.ac: Check for gc-debug earlier; replace remaining +full-debug tests. +* include/gc.h, ptr_chck.c (GC_pre_incr, GC_post_incr): +Use signed offset type. Use ptr_t internally. +* doc/gcinterface.html: Update LOCAL_MALLOC description. +* doc/README.autoconf, doc/leak.html, doc/README.DGUX386: +Fix full-debug reference. +* include/gc.h: Rewrite GC_..._INCR and friends. +* tests/test.c: Minimally test GC_..._INCR and friends. + +* mark.c: (GC_push_next_marked, GC_push_next_marked_dirty, +GC_push_next_marked_uncollectable): Never invoke GC_push_marked +on free hblk. +* headers.c: Test COUNT_HDR_CACHE_HITS not USE_HDR_CACHE. +(GC_header_cache_miss): Always blacklist pointers for free +hblks. Add assertion and comment. +* pthread_support.c (GC_register_my_thread): Fix #if indentation. +* include/private/gc_hdrs.h: USE_HDR_CACHE is no longer tested. +Delete it. +* include/private/gc_pmark.h: (PUSH_OBJ): Add assertion. + +* alloc.c, include/gc_mark.h, Makefile.direct: Improve comments. + +* configure.ac: Set win32_threads on MinGW. + +Ivan's description of the patch follows. Note that a few pieces like +the GC_malloc(0) patch, were not applied since an alternate had been +previously applied. A few differed stylistically from the rest of +the code (mostly casts to void * instead of target type), +or were classified as too minor to bother. Note that +all of Ivan's static declarations which did not correct outright +naming bugs (as a few did), where replaced by STATIC, which is +ignored by default. + +- minor bug fixing (for FreeBSD, for THREAD_LOCAL_ALLOC and for +GC_malloc(0)); +- addition of missing getter/setter functions for public variables +(may be useful if compiled as Win32 DLL); +- addition of missing GC_API for some exported functions; +- addition of missing "static" declarator for internal functions +and variables (where possible); +- replacement of all remaining K&R-style definitions with ANSI +C ones (__STDC__ macro is not used anymore); +- addition of some Win32 macro definitions (that may be missing in +the standard headers supplied with a compiler) for GWW_VDB mode; +- elimination of most compiler warnings (except for +"uninitialized data" warning); +- several typos correction; +- missing parenthesis addition in macros in some header files of +"libatomic_ops" module. + +My highlights based on reading the patch: + +* allchblk.c: Remove GC_freehblk_ptr decl. +Make free_list_index_of() static. +* include/gc.h: Use __int64 on win64, define GC_oom_func, +GC_finalizer_notifier_proc, GC_finalizer_notifier_proc, +add getter and setters: GC_get_gc_no, GC_get_parallel, +GC_set_oom_fn, GC_set_finalize_on_demand, +GC_set_java_finalization, GC_set_dont_expand, +GC_set_no_dls, GC_set_max_retries, GC_set_dont_precollect, +GC_set_finalizer_notifier. Always define GC_win32_free_heap. +gc_config_macros.h: Define _REENTRANT after processing +GC_THREADS. +* include/gc_cpp.h: Improve GC_PLACEMENT_DELETE test, +handling of operator new[] for old Windows compilers. +* include/gc_inline.h (GC_MALLOC_FAST_GRANS): Add parentheses +around arguments. +* dbg_mlc.c, malloc.c, misc.c: Add many GC_API specs. +* mark.c (GC_mark_and_push_stack): Fix source argument for +blacklist printing. +* misc.c: Fix log file naming based on environment variable +for Windows. Make GC_set_warn_proc and GC_set_free_space_divisor +just return current value with 0 argument. Add DONT_USE_USER32_DLL. +Add various getters and setters as in gc.h. +* os_dep.c: Remove no longer used GC_disable/enable_signals +implementations. (GC_get_stack_base): Add pthread_attr_destroy +call. No longer set GC_old_bus_handler in DARWIN workaround. +* pthread_support.c: GC_register_my_thread must also +call GC_init_thread_local. + +* Makefile.direct, mach_dep.c: Add support for NO_GETCONTEXT. +* mach_dep.c: Include signal.h. +* gc_priv.h: Factor out INLINE declaration. + +* include/private/gcconfig.h: Update MIPS/LINUX config. +* doc/gcdescr.html: Fix typo. +* mach_dep.c (GC_with_callee_saves_pushed): Don't rely on getcontext +for MIPS/LINUX. + +* configure.ac: SPARC fixes. +* thread_local_alloc.c(GC_mark_thread_local_fls_for): Include +size 0, except for gcj. +* doc/gc.man: Expand C++ cautions. +* include/gc_inline.h: Fix comments. + + +== [7.1] 2008-05-03 == + +* doc/gcinterface.html: Improve C++ interface documentation. + +* allchblk.c (GC_allochblk): Check for overflow during size +rounding. +* tests/huge_test.c: New. +* Makefile.direct, tests/tests.am: Add huge_test.c + +* pthread_support.c: Fix typo in comment. +* os_dep.c (GC_win32_get_mem): Add heap section only if +allocation succeeded. + +* malloc.c: (free replacement) Fix caller address space check. + +* finalize.c (GC_grow_table): Dereference table in null-check. + +* win32_threads.c (GC_delete_gc_thread, GC_delete_thread): +Consistently call CloseHandle. (GC_suspend): Call +GC_delete_gc_thread. +* tests/test.c: Don't reference GC_print_stats if not exported. + +* tests/test.c (run_one_test): Don't mention pthread_self(). +* misc.c: Declare GC_thr_init(). + +* allchblk.c (add_to_fl): disable assertions with USE_MUNMAP, +and refine assertions to handle huge unmergable blocks. +(GC_allochblk_nth): Add comment. + +* include/private/gcconfig.h: Add missing FREEBSD macro +consistency test. + +* allchblk.c (GC_enough_large_bytes_left): No longer take +parameters; return free list index bound. +(GC_merge_unmapped): Don't access nexthdr until after null test. +(Fixes bug in 1/29/08 check-in.) (GC_allochblk): Calculate +when splitting is allowable only once here, not when considering each +block. (GC_allchblk_nth): Accept new may_split parameter. +Avoid some redundant tests for exact size matches. +* alloc.c (GC_should_collect): Cache min_bytes_allocd. +(GC_maybe_gc): Make locking assertion testable. +* mark_rts.c: Fix indentation. +* pthread_stop_world.c: Replace old GC_err_printf1 reference. +* tests/test.c: Remove (void) casts. Optionally print some +timing information. + +* windows-untested/gc.def: Remove CreateThread line. +* windows-untested/README: New file. +* win32_threads.c (GC_use_DllMain): Force collector initialization. +* include/gc.h (GC_use_DllMain): Clarify usage rules in comment. +* mark.c (GC_mark_from): Slightly simplify GC_DS_PER_OBJECT code. +* include/gc_cpp.h: Add matching placement delete overloads +everywhere. +* include/private/gc_locks.h (NO_THREAD): Add cast. +* include/private/gcconfig.h: Add test for __HP_aCC. +* configure.ac, tests/tests.am: Avoid libgccpp on HP/UX. + +* doc/README.win32: Fix typo. +* configure.ac: Fix printing of enable-shared result. + +* misc.c (GC_init_inner): Assert !GC_need_to_lock only when +defined. (GC_call_with_stack_base): Add GC_API. +* os_dep.c (GC_get_stack_base): Add GC_API. +* win32_threads.c: (GC_register_my_thread, GC_unregister_my_thread): +Add GC_API. +* include/gc.h: Add GC_API annotations. +* include/private/gc_locks.h: Define UNCOND_LOCK etc. also for +PCR. +* include/private/gc_pmark.h: Fix comments. + +* include/private/gc_priv.h, mark_rts.c, typd_mlc.c: +Add GC_push_typed_structures() to push GC_ext_descriptors. + +* tests/test.c: Call GC_INIT for DARWIN; test system type using +gcconfig.h-defined macros. + +* allchblk.c (GC_merge_unmapped, GC_freehblk): Refuse to create +blocks large enough that their size, when interpreted as a signed +value, would be negative. +* include/private/gc_priv.h: Comment hb_sz range limit. + +* mark.c (GC_push_next_marked): correct comment. +* Makefile.direct: document NO_PROC_STAT. +* include/private/gcconfig.h: Accommodate NO_PROC_STAT. + + +== [7.1alpha2] 2008-01-10 == + +* Makefile.am: Mention atomic_ops.c and atomic_ops_sysdeps.S +again. Refer to build directory as ".". + +* configure.ac: Ignore --enable-parallel-mark on Darwin for now. +* darwin_stop_world.c: Add FIXME comment for parallel marker. + +* include/private/gc_priv.h: Update MAX_ROOT_SETS +and LOG_PHT_ENTRIES to handle larger heaps. + +* include/gc.h (GC_INIT,GC_init): Update comments. + +* allchblk.c, alloc.c, include/private/gc_priv.h: +Track GC_bytes_dropped and use in GC triggering decisions. +* alloc.c (min_bytes_allocd): Weight atomic blocks less. + +* alloc.c (GC_add_to_heap): Call GC_install_header(p) AFTER +adjusting p. + +* Makefile.am: Add NT_X64_THREADS_MAKEFILE. + +* NT_X64_STATIC_THREADS_MAKEFILE: Clean up obsolete comment. +* alloc.c: Add declaration for GC_add_current_malloc_heap. +* win32_threads.c (GC_beginthreadex): Clean up error +return code. +* doc/README.win64, NT_X64_THREADS_MAKEFILE, Makefile.direct: +Add NT_X64_THREADS_MAKEFILE. + +* alloc.c: Define GC_version instead of in version.h. +* version.h: Remove. +* include/gc_version.h: Move most of version.h here. +* include/gc.h: Include gc_version.h. +* gcname.c, add_gc_prefix.c: include gc.h instead of version.h. +* Makefile.direct, Makefile.dj, Makefile.am, include/include.am: +Adjust for version.h rename. + +* configure.ac: Put libatomic_ops links in build directory. +* Makefile.am: Don't mention atomic_ops.c and atomic_ops_sysdeps.S +as nodist sources. + +* include/gc.h, doc/README.macros: Add GC_NO_THREAD_REDIRECTS, +GC_NO_THREAD_DECLS, don't test explicitly for GC_SOLARIS_THREADS. + +* alloc.c: Deal correctly with address wrapping for +GC_greatest_plausible_heap_addr and GC_least_plausible_heap_addr. +* finalize.c, include/gc.h (GC_register_disappearing_link, +GC_register_finalizer_inner): Improve out-of-memory handling. +* include/private/gc_pmark.h: Fix comment spelling. + +* include/gc_inline.h, include/gc_tiny_fl.h: cleanups to make usable +in other contexts. + +* include/gc.h: Don't define GC_HAVE_BUILTIN_BACKTRACE for uclibc. + +* gc_cpp.cc: Don't include gc_cpp.h from local directory. + +* allchblk.c, configure.ac (add --enable-munmap) + +* dyn_load.c (GC_dyld_image_add): Remove ifdef clause and use the macro +GC_GETSECTBYNAME instead. +* include/private/gc_priv.h: Define GC_GETSECTBYNAME according to the +architecture (Darwin). + +* reclaim.c (GC_bytes_found): Expand comment. +* thread_local_alloc.c (GC_malloc_atomic, GC_gcj_malloc): Pass +granules, not bytes, to GC_FAST_MALLOC_GRANS. +* include/gc.h: Never include gc_local_alloc.h. +* tests/test.c: Add size zero allocation tests. + +* malloc.c: Update GC_large_allocd_bytes on explicit deallocation. +* allchblk.c: Sanity check GC_max_large_allocd_bytes. + +* Makefile.direct: Invoke $(MAKE) instead of make. + +* doc/scale.html: Reflect gc7 thread local allocation behavior. + +* include/extra/gc.h, include/extra/gc_cpp.h: New. +* include/include.am: Install gc.h and gc_cpp.h in $(prefix)/include +again. + +* pthread_support.c (GC_thr_init): Use sysconf(_SC_NPROCESSORS_ONLN) +for HURD. + +* include/private/gcconfig.h: Add Linux/mips-64 support. + +* dbg_mlc.c: Use random() on all glibc systems. +* mach_dep.c (GC_with_callee_saves_pushed): Don't use getcontext() on +HURD. Add comment. +* pthread_stop_world.c (GC_suspend_handler, GC_stop_init): Accommodate +systems without SA_SIGINFO. + +* include/gc.h (GC_PTR_STORE): Fix non-DEBUG parentheses. +* tests/test.c (run_one_test): Add GC_PTR_STORE test. +No longer test for RS6000. + +* alloc.c, backgraph.c, headers.c, include/private/gc_priv.h: +Maintain GC_our_memory and GC_n_memory. +* dbg_mlc.c (GC_print_smashed_obj): Improve message. +(GC_print_all_smashed_proc): Pass client object address instead of +base. +* dyn_load.c (sort_heap_sects): New. (GC_register_map_entries): +Register sections that are contiguous and merged with our heap. +* malloc.c, os_dep.c (GC_text_mapping): Check for just base name +of libraries. +* malloc.c (calloc): Check for special callers even with +USE_PROC_FOR_LIBRARIES. Move assertion. Add rudimentary +malloc/free tracing. +* misc.c: No longer call GC_init_lib_bounds explicitly. +* thread_local_alloc.c (GC_malloc, GC_malloc_atomic): Always +initialize on demand. +* tests/test.c: Call GC_INIT only when required. + +* Makefile.direct: Remove comment fragment. +* tests/tests.am: Add smashtest. +* configure.ac: Define GC_USE_DLOPEN_WRAP with redirect-malloc. +* pthread_support.c: Fix comment spelling. +* include/private/gcconfig.h: Define USE_PROC_FOR_LIBRARIES with +GC_LINUX_THREADS and REDIRECT_MALLOC. +* tests/smash_test.c: Initial check-in. +* obj_map.c: Print log entry to correct file. +* include/private/thread_local_alloc.h: Add TlsAlloc error check. + +* alloc.c (GC_stopped_mark): Call GC_add_current_malloc_heap() +while world is still running. +* os_dep.c (GC_is_heap_base): Don't call GC_add_current_malloc_heap() +with world stopped. +* include/gc.h (GC_INIT for cygwin): Always call GC_add_roots. +* misc.c (GC_init/GC_init_inner): Perform all work in +GC_init_inner. +* Makefile.direct: Expand -DUSE_MUNMAP comment. + +* include/gc.h: Define uintptr_t explicitly for VC++6. +* msvc_dbg.c (GetModuleBase): Revert to strcat if strcat_s doesn't +exist. + + +== [7.0] 2007-07-02 == + +* include/gc_config_macros.h: Also check for IA64 when setting +GC_HPUX_THREADS. +* mallocx.c: Change my_bytes_allocd to signed_word. +* include/gc_pthread_redirects.h: Remove obsolete Solaris threads +(as opposed to pthreads) support. + +* mach_dep.c (GC_with_callee_saves_pushed): Don't use getcontext() +on ARM/Linux. Check getcontext() return value. + +* backgraph.c (per_object_func): Make argument types consistent. +(GC_traverse_back_graph): Mark GC_deepest_obj. + +* finalize.c (GC_finalize): Change dl_size and fo_size to size_t. +* os_dep.c (GC_win32_get_mem): Add GC_mem_top_down option. + +* doc/README.win32, doc/README, README.QUICK: Fix some of the worst +anachronisms. +* dyn_load.c: Partially support cygwin, but don't enable it yet. + +* Makefile.am: Use -no-undefined for libgc. +* Makefile.direct: Document USE_PROC_FOR_LIBRARIES. +* dyn_load.c (GC_register_map_entries): Rename prot_buf to prot +consistently. +* misc.c: Fix some WARN calls. Move GC_is_initialized setting and +GC_thr_init() call. +* os_dep.c: Consistently use WARN where appropriate. +* thread_local_alloc.c: Revert change to GC_WIN32_THREADS test. Instead +remove inappropriate pthread.h include. +* doc/README.linux: Remove some anachronisms. + +* alloc.c: Also use GC_check_tls on non-Linux systems. +* mallocx.c (GC_reclaim_generic): Remove bogus declaration. +* include/private/gc_priv.h (GC_reclaim_generic): Declare correctly +with prototype. + +* alloc.c (GC_adj_bytes_allocd): Avoid (long) casts, fix comment. +(GC_print_heap_sects): Use size_t instead of unsigned long. +* thread_local_alloc.c (GC_lookup_thread): Define in the correct +context. +* win32_threads.c, include/gc_config_macros.h: The last of Romano +Paolo Tenca's patch. Move stdint.h include to gc_config_macros.h. +* include/gc_inline.h: Avoid gc_priv.h dependencies. +* tests/test.c (check_heap_stats): Replace unsigned long with size_t. + +* NT_X64_STATIC_THREADS_MAKEFILE: Replace obsolete -debugtype:cv. +* mark_rts.c (GC_push_roots): Fix kind type. + +* doc/README.win64: New file. +* doc/doc.am, Makefile.direct: Add README.win64. + +* Makefile.am, Makefile.direct: Add NT_X64_STATIC_THREADS_MAKEFILE. +* NT_X64_STATIC_THREADS_MAKEFILE: Fix warning flags. +* allochblk.c, alloc.c, blacklst.c, dbg_mlc.c, dyn_load.c, +finalize.c, headers.c, mach_dep.c, malloc.c, mark.c, misc.c, +obj_map.c, os_dep.c, ptr_chck.c, reclaim.c, typd_mlc.c, +win32_threads.c, cord/de_win.c, include/gc_mark.h, +include/private/gc_hdrs.h, include/private/gc_pmark.h, +include/private/gc_priv.h, tests/test_cpp.cc: +Replace old style function declarations. Clean up integral types. +Remove register declarations. The change in malloc.c and the +"int descr" declaration in mark.c are the most likely to have +been real bugs outside of win64. +* msvc_dbg.c: Disable on win64. +* win32_threads.c: Add AMD64 support. +* include/gc.h: no backtrace on AMD64 for now. + +* msvc_dbg.c(GetModuleBase): Replace strcat with strcat_s. + +* include/gc.h: (GC_word, GC_signed_word): Fix win64 definitions. +Don't include windows.h in an extern "C" context. +* include/private/gcconfig.h: Fix win64/X86_64 configuration. +* tests/test.c: Eliminate more old style function definitions. +Cleanup pointer and integer casts for win64. +* tests/test_cpp.cc: Don't include gc_priv.h. +* NT_STATIC_THREADS_MAKEFILE: Restrict suffixes for VC++ 2005. +* NT_X64_STATIC_THREADS_MAKEFILE: New. + +* win32_threads.c: Separate out DEBUG_WIN32_PTHREADS_STACK. Ignore +FINISHED threads for suspension. (GC_pthread_join): Add +pthread_self() cast. (GC_pthread_start_inner): Execute cleanup +handler when popping it. +* include/private/gc_locks.h: Inline THREAD_EQUAL for +GC_WIN32_PTHREADS. Define USE_PTHREAD_LOCKS only if we have +pthreads. + +* gc_dlopen.c, thread_local_alloc.c, threadlibs.c, win32_threads.c, +tests/test.c: Accommodate GC_WIN32_PTHREADS. +* include/gc.h: Don't include windows.h for GC_WIN32_PTHREADS. +* include/gc_config_macros.h: Define both PTHREADS and +GC_WIN32_THREADS. +* include/private/gc_locks.h: Nonstandard definitions of +NUMERIC_THREAD_ID for GC_WIN32_PTHREADS. +* doc/README.win32, Makefile.direct: Include documentation +for GC_WIN32_PTHREADS. +* Makefile.direct: Remove some anachronisms in the documentation. + +* Makefile.am: Move includes to bottom. Add better library +dependencies. Increment library version. Remove "SUBDIRS += .". +* cord/cord.am, tests/tests.am: Add better library dependencies. +Remove now unnecessary dependencies. +* include/gc.h (GC_beginthreadex, GC_endthreadex, GC_ExitThread): +Move to define on all Windows platforms. (_beginthread): define +to generate error if used. + +* include/private/gc_locks.h: Format to 80 columns. + +* malloc.c(GC_free): Ignore bad frees on MSWIN32 with REDIRECT_MALLOC. +* NT_MAKEFILE: msvc_dbg.h is in include/private. Don't use cvars +rc. +* misc.c (WIN32 GC_write): Define GC_need_to_lock in single-threaded +case. +* win32_threads.c: Test for __MINGW32__ in addition to _MINGW_VER. +(GC_CreateThread, GC_beginthreadex): Deallocate args even if we fail. +* include/gc.h: Add GC_reachable_here(). (GC_WinMain): Add GC_API. +(GC_beginthreadex, GC_endthreadex, GC_ExitThread): Declare. +* tests/test.c: Add GC_reachable_here() call. + +* alloc.c (GC_try_to_collect): Call GC_init if necessary. +* tests/thread_leak_test.c: Don't unconditionally define +GC_LINUX_THREADS. + +* Makefile.am: Remove extra_ldflags_libgc definition. + +* include/private/gc_priv.h: Define AO_REQUIRE_CAS. + +* finalize.c (GC_unreachable_finalize_mark_proc): Don't return void +value. + + +== [7.0alpha9] 2007-05-15 == + +* Some gc6.9 changes. +* Change FindTopOfStack decl in darwin_stop_world.c. +* Move some static tests from misc.c to gcconfig.h. Use #error. +* Add GC_print_free_list() function (thanks to Bruce Hoult). +* Add GC_GNU_THREADS support on HURD (thanks to Aleksey Demakov, +Barry DeFreese, and possibly other Debian maintainers). +* __GNUC__ was misspelled as __GNUC in thread_local_alloc.h (thanks to +Peter Wang). +* Integrated various MacOSX patches and tried to reconcile them (thanks to +Allan Hsu, several contributors at Apple, and probably others). +* Added some casts to powerpc.h in libatomic_ops to silence warnings. + +* Makefile.am: Include NT_STSTIC_THREADS_MAKEFILE in dist. +* include/private/gc_locks.h: GC_compare_and_exchange, GC_atomic_add: +remove. NUMERIC_THREAD_ID, THREAD_EQUAL: New. GC_lock_holder: now +unsigned long. I_DONT_HOLD_LOCK, I_HOLD_LOCK: Update. +* pthread_stop_world.c, pthread_support.c, win32_threads.c: Use +NUMERIC_THREAD_ID, THREAD_EQUAL. +* include/private/gcconfig.h: GENERIC_COMPARE_AND_SWAP: Remove. +* include/private/thread_local_alloc.h: Don't USE_COMPILER_TLS on +ARM. + +* dbg_mlc.c, include/gc.h, finalize.c: Merge Alexandre Oliva's +GC_debug_register_finalizer_unreachable() patch from gcc tree. +* thread_local_alloc.c (GC_malloc, GC_malloc_atomic): Add assertions +to check GC has been initialized. + +* include/gc_cpp.h: Documentation updates. +* include/gc_config_macros.h: Don't check for __ppc__ to set +DARWIN_THREADS. +* Makefile.am: Include configure_atomic_ops.sh in dist. + +* Makefile.am: Don't distribute copied atomic_ops files. Include +libatomic_ops with "make dist". +* configure.ac: Enable THREAD_LOCAL_ALLOC for Cygwin with threads. +* win32_threads.c: Report error for Cygwin + GC_DLL. + +* Makefile.direct: Update THREAD_LOCAL_ALLOC documentation. +* cord/de_win.c: Rename and move AboutBox. Call GC_INIT. Remove +MakeProcInstance anachronism. +* doc/README.macros: Officially remove elif prohibition. +Remove documentation for defunct SRC_M3 support. +* include/gc.h: Remove more SRC_M3 references. +* include/private/gcconfig.h: Remove still more SRC_M3 references. +GC_SOLARIS_THREADS no longer needs to be checked separately. + +* thread_local_alloc.c, include/private/thread_local_alloc.h: +Spell __declspec correctly. +* NT_STATIC_THREADS_MAKEFILE: Enable thread-local allocation. + +* doc/README.win32: Adjust GC_win32_dll_threads rules again. + +* mark.c (GC_mark_some wrapper): Restructure for readability, handle +GC_started_thread_while_stopped. +* misc.c (Win32 GC_write): Lock GC_write_cs only if needed. +* win32_threads.c: (client_has_run): remove, +GC_started_thread_while_stopped, GC_attached_thread: add. +(GC_push_all_stacks): Add verbose output. +(DllMain): Avoid initializing collector or the like. +Never update both thread tables. +* doc/README.win32: Adjust GC_win32_dll_threads rules. + +* pthread_stop_world.c (GC_push_all_stacks): Print thread count with +GC_PRINT_VERBOSE_STATS. + +* configure.ac: Comment out redundant +AC_DEFINE(NO_EXECUTE_PERMISSION). +* sparc_mach_dep.S: Remove single quote in comment. +* include/private/gcconfig.h: Fix DATAEND for NONSTOP. +* win32_threads.c: Include stdint.h for Mingw. Add GC_API for DllMain. +(GC_use_DllMain): Fix assertion. + +* configure.ac: Introduce extra_ldflags_libgc. Use it for Darwin. +* Makefile.am (libgc_la_LDFLAGS): Use extra_ldflags_libgc. +* include/private/gcconfig.h: Enable MPROTECT_VDB for all Darwin +targets. Remove comments. +Prepare ppc64 support for Darwin. + +* darwin_stop_world.c (GC_push_all_stacks): Fix compiler warnings. +Make i unsigned. +(GC_stop_world): Likewise. Remove unused GC_thread p. +(GC_start_world): Likewise. + +* os_dep.c: Define GC_darwin_register_mach_handler_thread extern. +Remove double SIG_HNDLR_PTR definition. +(GC_forward_exception): Fix compiler warnings, make i unsigned. +Initialize thread_state to NULL. +(catch_exception_raise): Fix compiler warnings, make i unsigned. + +* include/private/gc_priv.h (NEED_FIND_LIMIT, FREEBSD variant): +also define for X86_64. +* configure.ac: Move generic gnu (Hurd) case to below kfreebsd case. +* README.changes: Point to ChangeLog. + +* darwin_stop_world.c: Move THREAD_FLD defines to ... +* include/private/gc_priv.h: ... here. +Fix THREAD_STATE definitions for ppc64. +* os_dep.c (catch_exception_raise): Use THREAD_FLD for exc_state member +access. + +* configure.ac (i586-darwin): Replaced HAS_I386_THREAD_STATE_* with +HAS_X86_THREAD_STATE32_*. +(x86_64-*-darwin*): Extended the above check for x86_64-*-darwin* with +HAS_X86_THREAD_STATE64_*. +Added value 1 in the above AC_DEFINE's. Important for the upcoming +Leopard. +* include/private/gcconfig.h: Modified X86_64 define for Darwin. +Removed __x86_64__ check in POWERPC section. Added base definitions +for the X86_64 Darwin port. +* include/private/gc_priv.h: Added GC_MACH_HEADER and GC_MACH_SECTION +to distinguish between 32 and 64-bit applications. Added definitions +for X86_64 Darwin. +* darwin_stop_world.c: Added HAS_X86_THREAD_STATE64___RAX. And +replaced HAS_I386_THREAD_STATE___EAX with HAS_X86_THREAD_STATE32___EAX. +(GC_push_all_stacks): Added code for X86_64 Darwin. Even for the +!DARWIN_DONT_PARSE_STACK. Maybe obsolete. +* dyn_load.c (GC_dyld_name_for_hdr): Use GC_MACH_HEADER. +(GC_dyld_image_add): Use GC_MACH_HEADER and GC_MACH_SECTION. +Distinguish between getsectbynamefromheader_64 and +getsectbynamefromheader. +* os_dep.c (catch_exception_raise): Introduce exception definition for +X86_64 Darwin. Replaced old i386_EXCEPTION_STATE_* definition with +x86_EXCEPTION_STATE32_*. Add X86_64 for exc_state.faultvaddr. + + +== [7.0alpha7] 2006-09-19 == + +* More 6.7 changes. +* Declare GC_dump() in gc.h. +* Add --enable-large-config, which just defines the LARGE_CONFIG macro. +* Make GlobalAlloc address alignment a bit more intuitive (thanks to +Charles Mills). +* Use #elif in the definitions of GET_MEM. +* Overhaul porting.html. Remove corresponding text from README. +* Fix typo in DARWIN section of gcconfig.h. +* Fix Darwin thread memory leak (thanks to Bruce Mitchener). +* Update x86 AO_test_and_set implementation to use "=q". +* Add $(EXEEXT) to many tests in tests/tests.am. (Corresponds to a +6.7 fix, which no longer applied.) +* Fix Darwin/PPC port. +* Fix Cygwin/threads port. +* Fix gcj malloc support. +* For GNU-style make, don't build libatomic_ops unless threads are requested. +This should allow single-threaded builds on platforms which do not +currently support libatomic_ops. +* Clean up and hopefully fix the CFLAGS calculation for GNU build. +(Substantially improves things on HP/UX.) +* Integrated Andrei Polushin's Visual C++ patches. These provide for +stack traces, better C++ debug support, and better log file handling. +Note that these change the location of the log file to a the path of the +executable with a .log extension. To get the old behavior back, define +OLD_WIN32_LOG_FILE. For the time being, I'm checking his project +files and the like into a windows-untested subdirectory. They +are almost certainly already out of date, but better than what we had +before. +* Fixed some win32 threads bugs, and added support for _beginthreadex. +* Fix zero size thread local allocation so that explicit deallocation +works correctly. +* Removed serious bug in GC_malloc_uncollectable(large size). +* Do not try to do thread-local gcj allocation in incremental mode. There +are races in setting up the descriptor. +* Add GC_INIT() to middle.c, fix some more GC_printfn calls. +* Some assertions erroneously used I_HOLD_LOCK() negatively, even though +it can now spuriously return TRUE. +* Rename SUNOS5 macro and OS name to SOLARIS and SUNOS5DL to SOLARISDL. +* On Linux and some Un*x variants, allocate memory by first trying sbrk, +and then switching to mmap if that fails. +* Fixed /proc/x/maps reading to deal with asynchronous deletions. +* Fix REDIRECT_MALLOC with threads on Linux. It now usually seems to work +with ugly hacks that include having calloc behave differently when it is +called from ld.so or the pthreads library. A reasonable amount of +infrastructure was added to support some of this. (Thanks to Roland McGrath +for ideas and information.) +* Import various updated build scripts. +* Add GC_register_has_static_roots_callback (thanks to Andrew Haley). +* Fix serious bugs in GC_malloc_atomic_uncollectable(). +* Return GC_SUCCESS form GC_get_stack_base(). +* Fix several atomic_ops problems on IA64 with HP Compiler. +* Update to atomic_ops-1.2. +* Fix hb_n_marks description and reclaim.c assertion. +* Various additional win32 threads fixes. +* Enable GC_ASSERTIONS for Debug build with NT_THREADS_MAKEFILE. + + +== [7.0alpha5] 2005-09-29 == + +* More 6.6, 6.7 changes. +* Some Solaris fixes, including some more general changes in how +the assembly pieces of mach_dep.c are handled. +* Removed a lot of SOLARIS_THREADS-specific code that was only +needed with the old implementation. This included many (mostly no-op) +versions of GC_is_fresh. +* Don't use atomic_ops in gc_locks.h unless we need threads. +* Fixed USE_MARK_BITS, which is once again the default without PARALLEL_MARK. +* Removed Solaris GC_INIT hack. It's a workaround for a long dead bug, +and it seemed to be wrong anyway. +* Changed win32_threads.c to require preprocessor-based interception +of thread routines by default. A client call to GC_use_DllMain is +now required to get the old behavior in which DllMain is used to implicitly +register threads. This was done for uniformity with other platforms, and +because the DllMain solution seemed to require very tricky code which, +at least in the past, imposed hard bounds on the number of threads. +* Many small changes to make thread support work again on Cygwin. +* Moved definition of allocator lock etc. to pthread_support.c and +win32_threads.c for those two cases. +* Got rid of the FASTLOCK() machinery. It doesn't seem useful on modern +platforms. +* Cleaned up the uncollectible allocation routines, speeding up the +slower paths. The code did enough unnecessary work off the critical path +that the underlying logic was getting hard to extract. +* No longer turn off THREAD_LOCAL_ALLOC with DBG_HDRS_ALL. Indications +are it just works, and I think the reasons for it not working disappeared +a while ago. +* Fixed bugs in hb_n_marks calculation and assertion. +* Don't use __builtin_expect for pre-3.0 gcc. +* Define GWW_VDB only for recent Microsoft tool chains. +* Add overview.html to doc directory. +* Fix NT_STATIC_THREADS_MAKEFILE, various compiler warnings. +* Made thread local allocation sort of work with Cygwin. The code should +be there to deal with other Windows variants, But non-Cygwin Windows +threads need more bug fixes. + + +== [7.0alpha4] 2005-08-02 == + +* Various 6.5, 6.6 changes. +* Removed GC_brief_async_signal_safe_sleep and used atomic_ops instead +(thanks to Ben Maurer). +* Integrated build patches from Davide Angelocola and Petter Urkedal. +* Fix dynamic-linker-based pthread call redirection. +* Renamed RS6000 to POWERPC/AIX. +* Allow recovery from SIGSEGV in marker on Linux. This works around +a race in thread stack marking if /proc is used to find roots. We do +that by default with malloc redirection and threads. This involved +moving some GC_find_limit and SETJMP related declarations to gc_priv.h. +* Added doc/porting.html file. +* Added ADD_HEAP_GUARD_PAGES for sbrk/*nix platforms to debug extreme +memory overwrite errors. +* Added trivial NO_INCREMENTAL flag to facilitate debugging. +* Added GC_getattr_np-based GC_get_stack_base (untested). +* Separated thread local allocation into a separate file and added the +beginning of win32 support for that. + + +== [7.0alpha3] 2005-04-28 == + +* Added support for dlopen-based interception of pthread functions. +This is only half done. The gc.h redefinitions currently interfere. +* Integrated major automake overhaul from Petter Urkedal. + + +== [7.0alpha2] 2005-04-07 == + +* GC_bytes_allocd was incremented by a possibly uninitialized variable +in GC_generic_malloc_inner. (Bug introduced in gc7.0alpha1. Thanks +to Ben Hutchings for tracking it down.) +* Win32 fixes (thanks to Ben Hutchings and Maurizio Vairani). +* Integrated Ben Hutchings' GetWriteWatch-based virtual dirty bit +implementation for win32. +* Removed pc_gc.tar and floppy targets in Makefile.direct. Removed +pc_excludes file. +* No longer include GC_bytes_wasted when evaluating allocation progress. +Since we are now counting live memory, it no longer makes sense. +* Applied Davide Angelocola's configure patch. There are now separate +Makefile.am's in the cord and tests subdirectory, more tests, etc. +* Renamed configure.in to configure.ac. +* Merged a very small number of Nathanael Nerode's configure.ac +cleanups from the gcc tree. Unfortunately, that file is a bit +different from ours. +* Changed EINTR handling in sem_wait slightly. +* Restructure the root marking code. Remove all traces of +USE_GENERIC_PUSH_REGS, and effectively make it the default. +Make it easier to pass a context pointer to the mark routine, in +case we ever want to do precise stack marking. +* Replace GC_start_blocking() and GC_end_blocking() with GC_do_blocking(). +This remains undocumented, and only implemented for pthreads. But it +removes an otherwise unavoidable race with stores of callee-save +registers. +* Fix GC_n_mark_bits for the default MARK_BIT_PER_GRANULE case. This +resulted in bogus complaints in heap dumps. +* Upgrade to libatomic_ops-1.0, and update build structure to match. +* Remove SRC_M3 support. Clean up lock initialization code in misc.c. +* Removed gc_local_alloc.h. If THREAD_LOCAL_ALLOC is defined, the +thread local allocation routines are now called automatically. +* Renamed gc_inl.h back to gc_inline.h. Changed the interface appreciably +since locking has turned into a dominant issue, and in-line allocation +only makes sense if it's no worse than thread-local allocation. +Gc_inline.h is now also used to implement thread-local allocation. +* Finished replacing stubborn allocation with manual write barrier. +Untested. +* Use thread-local allocation code by default. +* Added GC_register_my_thread and friends for Posix and win32. +* Patch for GWW_VDB from Ben Hutchings. +* Removed explicit THREAD_LOCAL_ALLOC tests, since that now always +redefines GC_malloc. +* Removed now unused AIX memory allocation code. +* Various minor fixes for bugs introduced in 7.0alpha1. + + +== [7.0alpha1] 2004-11-09 == + +* Remove GC_PROTO, VOLATILE, GC_PTR, and GC_CONST. Assume ANSI C compiler +and use ANSI constructs unconditionally. +* Introduce #elif and #error in some of the appropriate places. +* Remove GC_printf cruft. Use stdargs. +* Remove separate Solaris threads support. Use the more generic Posix +implementation. +* Use atomic_ops for atomic operations and memory barriers. +* Clean up MPROTECT_VDB implementation. Use SA_SIGINFO wherever +possible. +* Remove broken SIGNALS stuff. +* Use size_t instead of word, where appropriate. +* Add .S.o rule to Makefile.am. +* Officially discontinue SunOS4, several old flavors of M68K (SunOS4, +A/UX, HP), IBM PC/RTs and RISCOS/Irix4. (I doubt the old code worked. +If anyone cares, these should be easy to resurrect.) +* Add EXPECT() in some critical places. +* Redefined hb_sz and hb_body to deal with bytes rather than words. +This affected a great deal of code. I would like to consistently use +byte offsets and sizes where there's not a convincing reason to do +otherwise. +* Redefined several other variables (GC_mem_found, GC_words_allocd) +etc. to use units of bytes. Most of these were also renamed to +reflect that fact. +* Killed as many "register" declarations as possible. +* Partially replaced stubborn allocation with manual write barrier. +It's currently broken. +* Restructured mark code, to allow mark bits to be kept either on +a per allocation granule or per object basis. The emphasis is +now on the -DUSE_MARK_BYTES option, since individual bits perform +quite badly on hyper-threaded P4s, and are probably suboptimal on +other architectures. -DUSE_MARK_BITS is currently broken, and may +be resurrected only for the single-threaded case. This significantly +reduced the cache footprint required by auxiliary GC data structures. +It also reduces space overhead for small heaps. It probably slows +things down slightly if interior pointers are very common. +* As part of the above, we now maintain an approximate count of set +mark bits in each heap block. +* As part of the above, the semantics of hb_map changed drastically. +For MARK_BIT_PER_OBJ, it doesn't exist. For MARK_BIT_PER_GRANULE, +it is purely a way to replace a mod instruction with a table lookup. +(Somewhat to my surprise, this still wins on modern hardware.) +* Removed PRINTSTATS, GATHERSTATS, and SILENT macros. Everything is +now controlled by GC_print_stats variable and GC_PRINT_STATS +and new GC_PRINT_VERBOSE_STATS environment variables. +* Add GC_log_printf and use it consistently for logging output. +* Unconditionally count the objects we reclaim in the sweep phase. +For thread local allocation, we need that anyway, and we expect +that's increasingly the only case that matters. And it simplifies +the code. In general expect minor performance hacks that benefit +only the single-threaded case to disappear. +* Remove GC_quiet from gc.h and elsewhere. +* Changed the heap expansion heuristic, and the definition of +GC_free_space_divisor, to refer to live data size, instead of total +heap size. I believe this is much more robust. It wasn't previously +possible, because we didn't have access to live data size. +* Thread local allocation added the extra byte in twice: Once in +thread_local_alloc, and once in malloc_many. +* Removed GC_malloc_words_small and GC_gcj_fast_malloc. A new +mechanism based on the thread local allocation data structures +is expected to be added instead. This should allow inlined code +that is both fast and doesn't rely on collector internals. +* Changed both free lists and reclaim lists to be indexed by granules +instead of words, norming halving their size. +* MERGE_SIZE is now the only option, and the macro was removed. +(Without it, we need a memory reference to GC_all_interior_pointers +anyway. Thus it costs us nothing.) +* Change GC_size_map to map to granules instead of words. Make sure +that every possible size up to TINY_FREELISTS is present. +* Split of macros need for fast inline allocation into gc_tiny_fl.h +in anticipation of a new inline allocator that doesn't rely on GC +internals. +* Changed thread local allocation to use GRANULE_BYTES and TINY_FREELISTS +in anticipation of a merge with the inline allocation code. +* Removed ALIGN_DOUBLE. This is mostly handled by GRANULE_BYTES. +* Make locking on most platforms conditional on GC_need_to_lock. + + +== [6.9] == + +* Fix typo in PREFETCH implementation for X86_64 (thanks to Peter Wang). +* Fix M68K LINUX port (thanks to Debian packagers). +* __GNUC__ was misspelled as __GNUC in new_gc_alloc.h (thanks to Peter Wang). +* Integrated Allan Hsu's patch for OS X VM deallocation problems. +* Applied FreeBSD/X86_64 patch. + + +== [6.8] 2006-07-08 == + +* Added some support for Dragonfly BSD (thanks to Joerg Sonnenberger and +Thomas Klausner). +* Improvements to the HP/UX section of configure.in/configure.ac (thanks +to Andreas Tobler). +* GC_unix_get_mem could neglect to release the malloc lock on Irix, under +extremely unlikely circumstances. (Thanks to Jean-Baptiste Nivois for +some careful code inspection.) +* Added support for kFreeBSD + glibc (thanks to Petr Salinger). +* Fix more MacOS threads memory leaks (thanks to Allan Hsu). +* Added initial Solaris/X86-64 support (thanks to Rainer Orth). + + +== [6.7] 2006-03-03 == + +* Add "int" to Solaris "end" and "etext" declaration in gc.h. Declared +the symbols with underscores and as arrays, since that's what's actually +used. Perhaps this could all just be removed. (Thanks to John Bowman.) +* Fixed ARM GC_test_and_set code (thanks to Kazu Hirata and Paul Brook). +* Added casts for assignments to hb_last_reclaimed, which truncate the +value. Added a cast to GC_adj_words_allocd. Use GetModuleHandleA +when retrieving a handle to kernel32.dll under win32. +* Added Tandem S-Series support. (Thanks to Craig McDaniel. A modified +version of his patch was applied, and hence breakage is probably not +his fault.) +* Remove spurious gc:: qualifier for operator delete[] in gc_cpp.h (thanks +to Hanno Boeck). +* Changed a test for LINUX in config_macros.h to one for __linux__. +* Add prototypes for GC_finalizer_notifier and GC_thr_init (thanks to +David Ayers). +* Use ld instead of nonexistent ldz instruction in Darwin FindTopOfStack +(thanks to Andreas Tobler). +* Add support for Darwin/X86 (thanks to Geoff Norton and the Mono +developers). +* Merge in some recent gcc fixes. Add ppc64 asm code. (Thanks to +Bryce McKinlay and other GCJ developers.) +* Scan MEM_PRIVATE sections under Windows ME and predecessors. +* Interior pointers with some largish offsets into large objects could +be ignored, if GC_all_interior_pointers was set. (Oddly this worked +correctly for stack references if it was not set. Otherwise it failed +for both stack and heap references. Thanks to Andrew McKinlay for the +critical test case.) +* Integrated Tatsuya Bizenn's NETBSD threads support, with some +untested changes. +* Added GC_strdup and friends to make leak detection work correctly +for strdup clients (thanks to Jon Moore). Fixed the existing strdup +with malloc redirection to handle a null malloc return correctly. + + +== [6.6] 2005-09-09 == + +* Fix CPU count detection for Irix and FreeBSD (thanks to Dan Bonachea). +* Integrate Dan Bonachea's patch for the IBM XLC compiler on Darwin. +* Integrated Andreas Tobler's FreeBSD/PowerPC patch. +* Don't access the GC thread structure from the restart handler. It's +unsafe, since the handler may run too late. (Thanks to Ben Maurer for +tracking this down.) +* Applied Christian Thalinger's patch to change comment syntax in +alpha_mach_dep.S. +* Added test for GC_no_dls in GC_dyld_image_add for DARWIN (thanks to +Juan Jose Garcia-Ripoll). +* Use LINUX_STACKBOTTOM for Linux/SH and LINUX/ARM (thanks to +Sugioka Toshinobu and Christian Thalinger). +* Rewrote GC_parse_map_entry. This assumed a fixed column layout of +/proc/self/maps on Linux. This ceased to be true about 2 years ago. +The old code is probably quite problematic with -DREDIRECT_MALLOC. It +is also used by default for IA64, though I haven't seen actual failures +there. +* More consistently define HBLKSIZE to 4096 on 64 bit architectures with +4K pages (thanks to Andrew Haley). +* With win32 threads, GC_stop_world needs to acquire GC_write_cs (thanks +to Ben Hutchings for the observation and patch). +* Move up struct callinfo declaration to make gcc 4.0.2 happy. + + +== [6.5] 2005-05-22 == + +* Integrated Paolo Molaro's patch to deal with EINTR in sem_wait. +* Make GC_approx_sp() write to dummy location to ensure that stack +is grown here, when sp looks reasonable, rather than later, when +it might look like a bad memory reference. (Problem was never +observed that I know of. But on rereading the code it seemed +dubious.) +* Separate out GC_with_callee_saves_pushed and sometimes call +it from GC_suspend_handler in pthread_stop_world.c. Callee-save +register values sometimes failed to get traced under HP/UX on +PA-RISC. Linux/IA64 had the same problem, though non-stacked +callee-save registers seem to be so rarely used there that nobody +ever noticed. +* Integrated an ancient Darwin powerpc_darwin_machine_dep.s patch +from Andreas Tobler, which I had lost. +* Fix compare_and_exchange implementation for gcc/IA64 to deal with +pickier compiler versions. +* Fixed Itanium 32-bit ABI support (HP/UX). In particular, the +compare_and_exchange implementation didn't consider that possibility. +* Undefine GC_pthread_detach in win32_threads.c (thanks to +Tommaso Tagliapietra). +* Fixed inclusion of frame.h for NETBSD in os_dep.c. +* Applied Dan Bonachea's patch to use mmap on AIX. +* Several fixes to resurrect the Irix port on recent OS versions. +* Change ALPHA to use LINUX_STACKBOTTOM. +* Change SPARC64/LINUX to also use LINUX_STACKBOTTOM. Deal with potential +bad values of __libc_stack_end on that platform (thanks to David Miller). +* Relax gctest to allow larger heap if ALIGN_DOUBLE isn't set. +(Unnecessary in 7.0) +* Force a define of __STDC__=0 for the IBM compiler on AIX, so that +we get prototypes. (Unnecessary in 7.0) +* GC_INIT definition for AIX and CYGWIN referred to DATASTART and DATAEND +which are only defined in private include files. +* Integrated some small gcconfig.h patches from Dan Bonachea. Also +relaxed assertion about FreeBSD stack size in pthread_support.c. +* Integrated Andrew Begel's darwin_stop_world.c patch for 64-bit +support. This may need additional work. +* Avoided potentially infinite recursion in GC_save_callers if +the system backtrace calls malloc. The workaround currently requires +__thread support if this code is used with threads. +* Avoided another similar infinite recursion by conditionally +invoking GC_save_callers in alloc.c (thanks to Matthias Andree +for helping to track down both of these). +* Removed all traces of aix_irix_threads.c. AIX and Irix now use +pthread_support.c and pthread_stop_world.c. The old code appeared +to be unreliable for AIX, and was not regularly maintained. +* On Irix, ignore segments with MA_FETCHOP or MA_NOTCACHED attributed; +they're not always safe to read. +* Fixed a previously vacuous assertion (diagnosed by the SGI compiler) +in GC_remove_from_fl. +* Fix stack_size assertion in GC_pthread_create. +* Fix assertion in GC_steal_mark_stack. + + +== [6.4] 2004-12-21 == + +* Merge gcconfig.h changes from gcc tree. +* Unconditionally include gc_priv.h in solaris_pthreads.c, win32_threads.h, +aix_irix_threads.c, and solaris_threads.c to get thread definitions. +* Start marker threads in GC_thr_init, so that they get started even +if no other threads are ever started. (Oddly enough, the parallel +collector worked correctly, though not well, with no helper threads.) +* Go ahead and split large blocks in GC_allochblk_nth if GC_dont_gc +is set (thanks to Alexander Petrossian). +* GC_PRINT_BACK_HEIGHT would deadlock with thread support. +* Let in_progress_space in backgraph.s grow dynamically. +* Fix README.solaris2. The GC_thr_init() hack doesn't work anymore. +* Convert GC_finalizer_mem_freed to bytes in allchblk.c. +* Add missing declaration for GC_generic_malloc_words_small_inner. +Without it, s390x breaks. (Thanks to Ulrich Weigand.) +* Applied several MacOSX patches to support older tool chains (thanks +to Stefan Ring). +* Bug fix for NetBSD/amd64 (thanks to Marc Recht). +* Add NetBSD/sh3 support (thanks to Uchiyama Yasushi). +* Fixed an uninitialized variable in cordprnt.c. +* Eliminated some, but not all, gcc -Wall warnings. +* Changed some old style casts to reinterpret_cast in new_gc_alloc.h +(thanks to Dan Grayson). +* GC_extend_size_map shouldn't adjust for GC_all_interior_pointers if +GC_DONT_ADD_BYTE_AT_END is set. +* Changed some (long) casts to (word) in preparation for win64 (thanks +to Peter Colson). +* Changed "int stack_size" declaration in pthread_support.c to use +size_t. (Only mattered with GC_ASSERTIONS enabled.) +* Added CRIS (etrax) support (thanks to Simon Posnjak and Hans-Peter Nilsson). +* Removed GC_IGNORE_FB frame buffer recognition, and replaced +it with a check that the mapping type is MEM_IMAGE. +In theory, this should work much better, but it is a high +risk change for win32. (Thanks to Ashley Bone for the crucial +experimental data behind this, and to Rutger Ovidius for +some further experiments.) +* GC_allochblk_nth incremented GC_words_wasted by bytes rather than +words. +* Consider GC_words_wasted in GC_adj_words_allocd only if it is within +reason. (A hack to avoid some extremely unlikely scenarios in which +we manage to allocate only "wasted" space. 7.0 has a better fix.) +* Changed PowerPC GC_clear implementation to use lwsync instead of +eieio, since the documentation recommends against eieio, and +it seems to be incorrect if the preceding memory op is a load. +* Fixed print_block_list to print the correct kind number for +STUBBORN (thanks to Rutger Ovidius). +* Have configure.in generate an error if it is asked to support +pthreads, but doesn't know how to. +* Added Kazuhiro Inaoka's patch for Renesas M32R support. +* Have the GNU build mechanism link with -ldl. Rename THREADLIBS +to THREADDLLIBS to reflect this. (Thanks to Sven Verdoolaege.) +* Added Hannes Mehnert's patch for FreeBSD/SPARC support. +* Merged some FreeBSD specific patches to threadlibs.c and dyn_load.c. +(Thanks to John Merryweather Cooper.) +* Define MPROTECT_VDB on MACOSX only if threads are being used, since the +dirty page tracking mechanism uses threads. (This avoids an undefined +reference to _GC_darwin_register_mach_handler_thread.) +* By popular demand, use __libc symbols only if we are built with +USE_LIBC_PRIVATES, which is off by default, and not otherwise documented. +* Ignore GC_enable_incremental() requests when KEEP_BACK_PTRS is set. +The GC itself will dirty lots of pages in this cases, probably making +it counterproductive on all platforms. And the DARWIN port crashes. + + +== [6.3] 2004-07-08 == + +* Compile test_cpp.cc with CXXCOMPILE instead of COMPILE. +* Very large allocations could cause a collector hang. Correct +calculation of GC_collect_at_heapsize. +* GC_print_hblkfreelist printed some bogus results if USE_MUNMAP +was defined. +* Include gc_config_macros.h in threadlibs.c. +* Correct MacOSX thread stop code (thanks to Dick Porter). +* SMALL_OBJ definition was off by one. This could cause crashes +at startup. (Thanks to Zoltan Varga for narrowing this down to +a trivial test case.) +* Integrate Paolo Molaro's patch to deal with a race in the Darwin +thread stopping code. +* Changed X86_64 implementation to use SA_SIGINFO in the MPROTECT_VDB +implementation. The old approach appears to have been broken by +recent kernels. +* Added GC_ATTR_UNUSED to eliminate a warning in gc_allocator.h (thanks +to Andrew Begel). +* Fix GC_task_self declaration in os_dep.c (thanks to Andrew Pinski). +* Increase INITIAL_BUF_SZ in os_dep.c for Solaris /proc reads. + + +== [6.3alpha6] 2004-05-06 == + +* Define USE_GENERIC_PUSH_REGS for NetBSD/M68K. +* Fixed the X86_64 PREFETCH macros to correctly handle ia32e (which uses +different prefetch instructions from AMD64). (Thanks to H.J. Lu.) +* GC_config_macros.h did not correctly define GC_WIN32_THREADS from +GC_THREADS. +* Added simple_example.html. +* Merged Andrew Gray's patch to correctly restore signal handlers on +FreeBSD. +* Merged a patch from Andreas Jaeger to deal with prefetch-related warnings +on x86-64. Added some other casts so that the PREFETCH macros +always get a ptr_t argument. Removed some casts in the PREFETCH +implementations. +* Added a header guard for gc_allocator.h and changed GC_debug_free to +clobber contents of deallocated object (suggested by Jesse Jones). +* The signal masking code in pthread_stop_world.c contained some errors. +In particular SIGSEGV was masked in the handler, in spite of the fact that +it wrote to the heap. This could lead to an uncaught SIGSEGV, which +apparently became much more likely in Linux 2.6. Also fixed some +typos, and reduced code duplication in the same area. +* Remove ltconfig, clean up configure messages for DG/UX (thanks to +Adrian Bunk for the patches). +* Integrated NetBSD/OpenBSD patches from Marc Recht and Matthias Drochner. + + +== [6.3alpha5] 2004-03-30 == + +* Fix & vs && typo in GC_generic_malloc and +GC_generic_malloc_ignore_off_page. (Propagated from the gcc tree.) +* Removed SA_NODEFER hack from NetBSD and Solaris write-protect handler. +(According to Christian Limpach, the NetBSD problem is fixed. +Presumably so is the Solaris 2.3 problem.) +* Removed placement delete from gc_cpp.h for the SGI compiler (thanks +to Simon Gornall for the patch). +* Changed semantics of the GC_IGNORE_FB environment variable, based +on experimentation by Nicolas Cannasse pointing out that the old +interpretation was useless. We still need help in identifying win32 +graphics memory mappings. The current "solution" is a hack. +* Removed "MAKEOVERRIDES =" from Makefile.am and thus Makefile.in. +It probably made more sense in the gcc context. +* Explicitly ensure that NEED_FIND_LIMIT is defined for {Open,Net}BSD/ELF. +* Replaced USE_HPUX_TLS macro by USE_COMPILER_TLS, since gcc often +supports the same extension on various platforms. +* Added some basic (completely untested) defines for win64, in support +of future work. +* Declared GC_jmp_buf in os_dep.s as JMP_BUF instead of jmp_buf, fixing +a memory overwrite bug on Solaris and perhaps other platforms. +* Added 0 != __libc_stack_end test to GC_linux_stack_base (thanks to +Jakub Jelinek for the patch and explaining the problem). +Otherwise pre-linking could cause the collector to fail. +* Changed default thread local storage implementation to USE_PTHREAD_SPECIFIC +for HP/UX with gcc. The compiler-based implementation appears to work +only with the vendor compiler. +* Export GC_debug_header_size and GC_USR_PTR_FROM_BASE from gc_mark.h, +making client mark code cleaner and less dependent on GC version. +* Export several new procedures and GC_generic_malloc from gc_mark.h +to support user-defined kinds. Use the new procedures to replace existing +code in gcj_mlc.c and typd_mlc.c. +* Added support for GC_BACKTRACES. +* Fixed a remaining problem in CORD_str with signed characters (thanks +to Alexandr Petrosian for the patch). +* Removed supposedly redundant, but very buggy, definitions of finalizer +macros from javaxfc.h. Fortunately this file probably has no users. +The correct declarations were already in gc.h. +* Also need to set GC_in_thread_creation while waiting for GC during +thread termination, since it is also possible to collect from an +unregistered thread in that case. +* Define NO_GETENV for Windows CE, since getenv doesn't appear to exist. +Plus some other minor WinCE fixes (thanks to Alain Novak). +* Added GC_register_describe_type_fn. +* Arrange for debugging finalizer registration to ignore non-heap +registrations, since the regular version of the routine also behaves +that way. +* GC_gcj_malloc and friends need to check for finalizers waiting to be run. +One of the more obscure allocation routines with missing a LOCK() call. +* Fixed cvtres invocations in NT_MAKEFILE and NT_STATIC_THREADS_MAKEFILE +to work with VS.NET. +* Cleaned up GC_INIT calls in test. Updated gc.man to encourage GC_INIT +use in portable code. +* Taught the GC to use libunwind if --enable-full-debug is specified on +IA64 and libunwind is present. +* The USE_MUNMAP code could get confused about the age of a block and +prematurely unmap it. GC_unmap_old had a bug related to wrapping of +GC_gc_no. GC_freehblk and GC_merge_unmapped didn't maintain +hb_last_reclaimed reasonably when blocks were merged. The code was +fixed to reflect original intent, but that may not always be an +improvement. + + +== [6.3alpha4] 2004-01-01 == + +* USE_MMAP was broken by confusion in the code dealing with USE_MMAP_ANON. +* Darwin support was broken in alpha3 as a result of my mis-integration of +Andrew Begel's patches. Fixed with another patch from Andrew Begel. +* A new sanity check in pthread_stop_world.c:GC_push_all_stacks() was +overly aggressive. We may collect from an unregistered thread during +thread creation. Fixed by explicitly checking for that case. (Added +GC_in_thread_creation.) + + +== [6.3alpha3] 2003-12-20 == + +* Removed -DSMALL_CONFIG from BCC_MAKEFILE. +* Changed macros to test for an ARM processor (Patch from Richard Earnshaw.) +* Mostly applied a DJGPP patch from Doug Kaufman. Especially Makefile.dj +had suffered from serious bit rot. +* Rewrote GC_apply_to_maps, eliminating an off-by-one subscript error, +and a call to alloca (for lcc compatibility). +* Changed USE_MUNMAP behavior on POSIX platforms to immediately remap +the memory with PROT_NONE instead of unmapping it. The latter risks +an intervening mmap grabbing the address space out from underneath us. +Updated this code to reflect a cleaner patch from Ulrich Drepper. +* Replaced _T with _Tp in new_gc_alloc.h to avoid a MACOS X conflict. +(Patch from Andrew Begel.) +* Dynamically choose whether or not lock should spin on win32 (thanks +to Maurizio Vairani for the patch). This may be a significant performance +improvement for win32. +* Fix Makefile.direct to actually include NT_STATIC_THREADS_MAKEFILE +in the distribution (thanks to Maurizio Vairani). +* Maybe_install_looping_handler() was accidentally exported, violating +our name space convention. +* Made os_dep.c use sigsetjmp and SA_NODEFER for NetBSD. (Thanks to +Christian Limpach. I generalized the patch to use sigsetjmp on all +UNIX_LIKE platforms, admittedly a slightly risky move. But it may avoid +similar problems on some other platforms. I also cleaned up the definition +of UNIX_LIKE a bit.) +* Integrated Andrew Begel's Darwin threads patch, adjusted according to +some of Fergus Hendersons's comments. (Patch didn't apply cleanly, +errors are possible.) +* Added another test or two for the Intel 8.0 compiler to avoid +confusing it with gcc. The single-threaded collector should now build +with icc, at least on ia64. + + +== [6.3alpha2] 2003-11-04 == + +* Re-enabled I_HOLD_LOCK assertion in aix_irix_threads.h. +* Put back the WINABI qualifier for GC_CreateThread. (Thanks to +Danny Smith for the patch. 6.3alpha1 had the qualifier in one place +but not elsewhere, which was clearly wrong.) +* Sometimes explicitly define __private_extern__ before DARWIN dyld.h +include. (Thanks to Andreas Tobler for posting the patch.) +* Included signal.h from pthread_support.c. Removed GC_looping_handler, +which was dead code. +* GC_find_start was misdeclared by gc_pmark.h if PRINT_BLACK_LIST was +defined (thanks to Glauco Masotti for testing and reporting this). +Changed GC_find_start to never just return 0. According to its +comment it doesn't, and it's unclear that's correct. +* GC_alloc_large had several largely compensating bugs in the +computation of GC_words_wasted. (It was confused about bytes vs. +words in two places.) +* Integrated Slava Sysoltsev's patch to support more recent versions of +the Intel compiler on IA64/Linux. +* Changed win32 spinlock initialization to conditionally set a spin count. +(Emmanual Stumpf pointed out that enabling this makes a large performance +difference on win32 multiprocessors.) Also cleaned up the win32 spinlock +initialization code a bit. +* Fixed thread support for HP/UX/IA64. The register backing store base for +the main thread was sometimes not set correctly. (Thanks to +Laurent Morichetti.) +* Added -DEMPTY_GETENV_RESULTS flag to work around Wine problem. +* Declare GC_stack_alloc and GC_stack_free in solaris_threads.h to +avoid 64-bit size mismatches (thanks to Bernie Solomon). +* Fixed GC_generic_push_regs to avoid a potential and very unfortunate +tail call optimization. This could lead to prematurely reclaimed +objects on configurations that used the generic routine and the new +build infrastructure (which potentially optimizes mach_dep.c). +This was a serious bug, but it's unclear whether it has resulted in +any real failures. +* Fixed CORD_str to deal with signed characters (thanks to Alexandr Petrosian +for noticing the problem and supplying the patch). +* Merged a couple of NOSYS/ECOS tests into os_dep.c from gcj (thanks +to Anthony Green). +* Partially merged a win32 patch from Ben Hutchings, and substantially +revised other parts of win32_threads.c. It had several problems. +Under MinGW with a statically linked library, the main thread was +not registered. Cygwin detached threads leaked thread descriptors. +There were several race conditions. For now, unfortunately the +static threads limit remains, though we increased it, and made table +traversal cost depend on the actual thread count. +There is also still some code duplication with pthread_support.c. +(Thread descriptors did become much smaller, since Ben Hutchings +removed the thread context from them.) +* Integrated a Solaris configure.in patch from Rainer Orth. +* Added GC_IGNORE_FB and associated warning to very partially address +the issue of the collector treating a mapped frame buffer as part +of the root set. (Thanks to David Peroutka for providing some +insight. More would be helpful. Is there anything that can be used +to at least partially identify such memory segments?) + + +== [6.3alpha1] 2003-07-26 == + +* Integrated some NetBSD patches by Marc Recht. These +were already in the NetBSD package. +* GC_pthread_create waited for the semaphore even if pthread_create failed. +(Thanks to Dick Porter for the pthread_support.c patch.) Applied the +analogous fix for aix_irix_threads.c. +* Added Rainer Orth's Tru64 fixes. +* The check for exceeding the thread table size in win32 threadDetach +was incorrect (thanks to Alexandr Petrosian for the patch). +* Applied Andrew Begel's patch to correct some reentrancy issues +with dynamic loading on Darwin. +* GC_CreateThread() was neglecting to duplicate the thread handle in +the table (thanks to Tum Nguyen for the patch). +* Pass +ESdbgasm only on PA-RISC machines with vendor compiler (thanks to +Roger Sayle for the patch). +* Applied more AIX threads patches from Scott Ananian. + + +== [6.2] 2003-06-21 == + +* Integrated a second round of Irix/AIX patches from Dan Bonachea. +Renamed mips_sgi_mach_dep.S back to mips_sgi_mach_dep.s, since it requires +the Irix assembler to do the C preprocessing; gcc -E doesn't work. +* Fixed Makefile.direct for DARWIN (thanks to Manuel Serrano). +* There was a race between GC_pthread_detach and thread exit that could +result in a thread structure being deallocated by GC_pthread_detach +even though it was still needed by the thread exit code (thanks to +Dick Porter for the small test case that allowed this to be debugged). +* Fixed version parsing for non-alpha versions in acinclude.m4 and +version checking in version.h. +* Issues identified (not yet fixed): +- A dynamic libgc.so references dlopen unconditionally, but doesn't link +against libdl. +- GC_proc_fd for Solaris is not correctly updated in response to a +fork() call. Thus incremental collection in the child won't work +correctly. (Thanks to Ben Cottrell for pointing this out.) +- --enable-redirect-malloc is mostly untested and known not to work +on some platforms. +- There seem to be outstanding issues on Solaris/X86, possibly with +finding the data segment starting address. +- Very large root set sizes (> 16 MB or so) could cause the collector +to abort with an unexpected mark stack overflow. (Thanks to +Peter Chubb.) NOT YET FIXED. Workaround is to increase the initial +size. +- The SGI version of the collector marks from mmapped pages, even +if they are not part of dynamic library static data areas. This +causes performance problems with some SGI libraries that use mmap +as a bitmap allocator. NOT YET FIXED. It may be possible to turn +off DYNAMIC_LOADING in the collector as a workaround. It may also +be possible to conditionally intercept mmap and use GC_exclude_static_roots. +The real fix is to walk rld data structures, which looks possible. +- Incremental collector should handle large objects better. Currently, +it looks like the whole object is treated as dirty if any part of it is. + + +== [6.2alpha6] 2003-06-05 == + +* There was an extra underscore in the name of GC_save_registers_in_stack +for NetBSD/SPARC (thanks to Jaap Boender for the patch). +* Integrated Brian Alliet's patch for Darwin. This restructured the +linuxthreads/pthreads support to separate generic pthreads support +from more the system-dependent thread-stopping code. I believe this +should make it easier to eliminate the code duplication between +pthreads platforms in the future. The patch included some other +code cleanups. +* Integrated Dan Bonachea's patch to support AIX threads. This required +substantial manual integration, mostly due to conflicts with other +recent threads changes. It may take another iteration to +get it to work. +* Removed HPUX/PA-RISC support from aix_irix_threads.c. It wasn't used +anyway and it cluttered up the code. And anything we can do to migrate +towards generic pthreads support is a good thing. +* Added a more explicit test for tracing of function arguments to test.c. +* Added Akira Tagoh's PowerPC64 patch. +* Fixed some bit rot in the Cygwin port (thanks to Dan Bonachea for +pointing it out). gc.h now includes just windows.h, not winbase.h. +* Declared GC_save_regs_in_stack() in gc_priv.h. Remove other declarations. +* Changed --enable-cplusplus to use automake consistently. The old way +confused libtool. "Make install" didn't work correctly for the old version. +Previously --enable-cplusplus was broken on cygwin. +* Changed the C version of GC_push_regs to fail at compile time if it is +generated with an empty body. This seems to have been the cause of one +or two subtle failures on unusual platforms. Those failures should +now occur at build time and be easily fixable. + + +== [6.2alpha5] 2003-05-14 == + +* GC_invoke_finalizers could, under rare conditions, set +GC_finalizer_mem_freed to an essentially random value. This could +possibly cause unbounded heap growth for long-running applications +under some conditions. (The bug was introduced in 6.1alpha5, and +is not in gcc3.3.) +* Attempted to sanitize the various DLL macros. GC_USE_DLL disappeared. +GC_DLL is used instead. All internal tests are now on GC_DLL. +README.macros is now more precise about the intended meaning. +* Include DllMain in the multi-threaded win32 version only if the +collector is actually built as a dll (thanks to Mohan Embar for +a version of the patch). +* Hide the cygwin threadAttach/Detach functions. They were violating our +namespace rules. +* Fixed an assertion in GC_check_heap_proc. Added GC_STATIC_ASSERT +(thanks again to Ben Hutchings). +* Removed some obsolete definitions for Linux/PowerPC in gcconfig.h. +* CORD_cat was not rebalancing unbalanced trees in some cases, violating +a CORD invariant. Also tweaked the re-balancing rule for +CORD_cat_char_star. (Thanks to Alexandr Petrosian for the bug report +and patch.) +* Added hand-coded structured exception handling support to mark.c. +This should enable support of dynamic libraries under win32 with +gcc-compiled code. (Thanks to Ranjit Mathew for the patch.) +Turned on dynamic library scanning for win32/gcc. +* Removed some remnants of read wrapping (thanks to Kenneth Schalk). +GC_USE_LD_WRAP was probably broken in recent versions. +* The build could fail on some platforms since gcconfig.h could include +declarations mentioning ptr_t, which was not defined, e.g. when if_mach +was built (thanks to Yann Dirson for pointing this out). Also +cleaned up tests for GC_PRIVATE_H in gcconfig.h a bit. +* The GC_LOOP_ON_ABORT environment variable interfered with incremental +collection, since the write fault handler was erroneously overridden. +Handlers are now set up in the correct order. +* It used to be possible to call GC_mark_thread_local_free_lists() while +the world was not stopped during an incremental GC. This was not safe. +Fortunately, it was also unnecessary. Added GC_world_stopped flag +to avoid it. (This caused occasional crashes in GC_set_fl_marks +with thread local allocation and incremental GC. This probably happened +primarily on old, slow multiprocessors.) +* Allowed overriding of MAX_THREADS in win32_threads.c from the build +command line (thanks to Yannis Bres for the patch). +* Taught the IA64/linux code to determine the register backing store base from +/proc/self/maps after checking the __libc symbol, but before guessing. +(__libc symbols are on the endangered list, and the guess is likely to not +always be right for 2.6 kernels.) Restructured the code to read and parse +/proc/self/maps so it only exists in one place (all platforms). +* The -DUSE_PROC_FOR_LIBRARIES code was broken on Linux. It claimed that it +also registered the main data segment, but didn't actually do so. (I don't +think anyone actually uses this configuration, but ...) +* Made another attempt to get --enablecplusplus to do the right thing. +Since there are unavoidable problems with C programs linking against a +dynamic library that includes C++ code, I separated out the c++ code into +libgccpp. + + +== [6.2alpha4] 2003-03-10 == + +* Use LINUX_STACKBOTTOM for >= glibc2.2 on Linux/MIPS. (See Debian bug +# 177204) +* Integrated Jeff Sturm and Jesse Rosenstock's MACOSX threads patches. +* Integrated Grzegorz Jakacki's substantial GNU build patch. "Make dist" +should now work for the GNU build process. Documentation files +are installed under share/gc. +* Tweaked gc_cpp.h to again support the Borland compiler (thanks to +Rene Girard for pointing out the problems). +* Updated BCC_MAKEFILE (thanks to Rene Girard). +* Added GC_ASSERT check for minimum thread stack size. +* Added --enable-gc-assertions. +* Added some web documentation to the distribution. Updated it in the +process. +* Separate gc_conf_macros.h from gc.h. +* Added generic GC_THREADS client-defined macro to set the appropriate +GC_XXX_THREADS internal macro. (gc_config_macros.h.) +* Add debugging versions of _ignore_off_page allocation primitves. +* Moved declarations of GC_make_closure and GC_debug_invoke_finalizer +from gc.h to gc_priv.h. +* Reset GC_fail_count even if only a small allocation succeeds. +* Integrated Brian Alliet's patch for dynamic library support on Darwin. +* gc_cpp.h's gc_cleanup destructor called GC_REGISTER_FINALIZER_IGNORE_SELF +when it should have called the lower case version, since it was +explicitly computing a base pointer. + + +== [6.2alpha3] 2003-01-30 == + +* Don't include execinfo.h in os_dep.c when it's not needed, and may not +exist. + + +== [6.2alpha2] == + +* Fixed the completely broken FreeBSD code in 6.2alpha1 (thanks to +Hironori Sakamoto for the patch). +* Changed IRIX reference in dbg_mlc.c to IRIX5 (thanks to Marcus Herbert). +* Attempted to work around the problems with .S filenames and the SGI +compiler. (Untested.) +* Worked around an HP/UX make issue with the GNU-style build process. +* Fixed the --enable-cplusplus build machinery to allow builds without +a C++ compiler. (That was always the intent ...) +* Changed the debugging allocation macros to explicitly pass the return +address for Linux and XXXBSD on hardware for which we can't get stack +traces. Use __builtin_return_address(0) to generate it when possible. +Some of the configuration work was cleaned up (good) and moved to gc.h +(bad, but necessary). This should make leak detection more useful +on a number of platforms. (Thanks to Fabian Thylman for the suggestion.) +* Fixed compilation problems in dbg_mlc.c with GC_ADD_CALLER. +* Bumped revision number for dynamic library. + + +== [6.2alpha1] 2003-01-23 == + +* Guard the test for GC_DUMP_REGULARLY in misc.c with +"#ifndef NO_DEBUGGING". Otherwise it fails to build with NO_DEBUGGING +defined. (Thanks to Manuel Serrano.) +* Message about retrying suspend signals was incorrectly generated even when +flag was not set. +* Cleaned up MACOSX/NEXT root registration code. There was apparently a +separate ifdef case in GC_register_data_segments() for no reason. +* Removed MPROTECT_VDB for MACOSX port, based on one negative report. +* Arrange for gc.h and friends to be correctly installed with GNU-style +"make install". +* Enable the GNU-style build facility include C++ support in the library +with --enable-cplusplus (thanks to Thomas Maier for some of the patch). +* Mark from GC_thread_key in linux_threads.c, in case that's allocated +from the garbage collected heap, as it is with our own thread-specific +storage implementation (thanks to Jeff Sturm). +* Mark all free list header blocks if they are heap allocated. This avoids +some unnecessary tracing. And it remains correct if we clear the +root set. (Thanks to Jeff Sturm for identifying the bug.) +* Improved S390/Linux support. Add S390/Linux 64-bit support (thanks to +Ulrich Weigand). +* Corrected the spelling of GC_{M,C}ALLOC_EXPLICTLY_TYPED to +GC_{M,C}ALLOC_EXPLICITLY_TYPED in gc_typed.h. This is technically +an interface change. Based on the fact that nobody reported this, +I suspect/hope there were no clients. +* Cleaned up gc_typed.h so that (1) it adds an extern "C" declaration +when appropriate, (2) doesn't generate references to undefined internal +macros, and (3) allows easier manual construction of descriptors. +* Close the file descriptor used by GC_print_address_map(). +* Set the "close-on-exec" bit for various file descriptors maintained +for the collector's internal use. +* Added a hack to find memory segments owned by the system allocator +under win32. Based on my tests, this tends to eventually find all +segments, though it may take a while. There appear to be cleaner, +but slower solutions under NT/XP. But they rely on an API that's +unsupported under 9X. +* Changed Linux PowerPC stack finding to LINUX_STACKBOTTOM. (Thanks +to Akira Tagoh for pointing out that HEURISTIC1 does not work on +64-bit kernels.) +* Added GC_set_free_space_divisor to avoid some Windows dll issues. +* Added FIXUP_POINTER, POINTER_SHIFT, POINTER_MASK to allow preprocessing +of candidate pointers for tagging, etc. +* Always lock around GC_notify_full_gc(). Simplified code for +invoking GC_notify_full_gc(). +* Changed the way DATASTART is defined on FreeBSD to be robust against +an unmapped page after etext. (Thanks to Hironori Sakamoto for +tracking down the intermittent failure.) +* Made GC_enable() and GC_disable() official. Deprecated direct update +of GC_dont_gc. Changed GC_gcollect to be a noop when garbage collection +is disabled. +* Call GC_register_dynamic_libraries before stopping the world on Linux, +in order to avoid a potential deadlock due to the dl_iterate_phdr lock. +* Introduced a more general mechanism for platform-dependent code to +decide whether the main data segment should be handled separately +from dynamic libraries, or registered by GC_register_dynamic_libraries. +The latter is more reliable and easier on Linux with dl_iterate_phdr. + + +== [6.1] == + +* Added GC_MAXIMUM_HEAP_SIZE environment variable. +* Fix configure.in for MIPS/LINUX (thanks to H.J. Lu). +* Double page hash table size for -DLARGE_CONFIG. +* Integrated Bo Thorsen's X86-64 support. +* STACKBOTTOM definition for LINUX/MIPS was partially changed back +(thanks to H.J. Lu and Hiroshi Kawashima for resolving this). +* Replaced all occurrences of LINUX_DATA_START in gcconfig.h with +SEARCH_FOR_DATA_START. It doesn't hurt to fall back to a search. +And __data_start doesn't seem to get defined correctly of the GC +library is loaded with LD_PRELOAD, e.g. for leak detection. +* If the GC_find_leak environment variable is set, do a +atexit(GC_gcollect) to give us at least one chance to detect leaks. +This may report some very benign leaks, but ... +* Addeded REDIRECT_FREE. It's necessary if we want leak detection with +LD_PRELOAD. +* Defer printing of leaked objects, as for smashed objects. +* Fixed process and descriptor leak in GC_print_callers. Try for +line number even if we got function name.) +* Ported parallel GC support and thread local allocation to Alpha. +Not yet well-tested. +* Added GC_DUMP_REGULARLY and added finalization statistics to GC_dump(). +* Fixed Makefile.am to mention alpha_mach_dep.S instead of the defunct +alpha_mach_dep.s. +* Incorporated a change to new_gc_alloc.h, +which should make it work with gcc3.1. +* Use alpha_mach_dep.S only on Linux. (It's not clear that this is +optimal, but it otherwise didn't build on Tru64. Thanks to Fergus Henderson.) +* Added ifdef to guard free() in os_dep.c. Otherwise we get a +compilation error on Irix (thanks to Dai Sato). +* Added an experimental version of GC_memalign to mallocx.c. This can't +always work, since we don't handle alignment requests in the hblk-level +allocator, and we can't handle arbitrary pointer displacements unless +GC_all_interior_pointers is enabled. But it should work for alignment +requests up to HBLKSIZE. This is not yet documented in the standard +places. +* Finally debugged the OSF1/Tru64 thread support. This needs more testing, +since I needed to add a somewhat unconvincing workaround for signal +delivery issues that I don't yet completely understand. But it does +pass my tests, even in parallel GC mode. Incremental GC support is +disabled if thread support is enabled, due to the signal issues. +* Eliminated name-space-incorrect definition of _cdecl from gc_cpp.h. +* Added GC_debug_malloc_replacement and GC_debug_realloc_replacement +declarations to gc.h. On IA64, this is required for REDIRECT_MALLOC +to work correctly with these. +* Fixed Linux USE_PROC_FOR_LIBRARIES to work with a 64-bit /proc format. + + +== [6.1alpha5] 2002-06-19 == + +* Added GC_finalizer_mem_freed, and changed some of the code that +decided on heap expansion to look at it. Memory explicitly +deallocated by finalizers essentially needs to be counted as reclaimed +by the GC. Otherwise there are cases in which the heap can grow +infinitely. (Thanks to Mark Reichert for the test case.) +* Integrated Adam Megacz patches to not scan dynamic libraries if +we are compiling with gcc on win32. Otherwise we need structured +exception handling to deal with asynchronously unmapped root +segments, and gcc doesn't directly support that. +* Integrated Anthony Green's patch to support Wine. +* GC_OPERATOR_NEW_ARRAY was misspelled OPERATOR_NEW_ARRAY in several +places, including gc_cpp.cc (thanks to Wink Saville for pointing this out). +* Integrated Loren J. Rittle's Alpha FreeBSD patches. These also +changed the declarations of symbols like _end on many platforms to +that they wouldn't mistakenly be declared as short data symbols (suggested by +Richard Henderson). +* Integrated changes from the Debian distribution (thanks to Ryan Murray +for pointing these out). +Fix C++ comments in POWERPC port. Add ARM32 +incremental GC support. Get rid of USE_GENERIC_PUSH_REGS for alpha/Linux, +this time for real. Use va_copy to get rid of cord printf problems +(finally). +* Close file descriptor used to count CPUs (thanks to Jeff Sturm for +pointing out the omission). +* Don't just drop gcj free lists in GC_start_reclaim, since that can +eventually cause the marker to see a bogus mark descriptor in the +dropped objects. The usual symptom was a very intermittent segmentation +fault in the marker. This mattered only if one of the GC_gcj_malloc +variants was used (thanks to Michael Smith, Jeff Sturm, Bryce McKinlay and +Tom Tromey for helping to track this down). +* Fixed Linux and Solaris/64 SPARC configuration (thanks to David Miller, +Jeff Sturm, Tom Tromey, and Christian Joensson). +* Fixed a typo in strdup definition (thanks to Gerard A Allan). +* Changed Makefile.direct to invoke $(CC) to assemble alpha_mach_dep.S. +This is needed on Linux. I'm not sure whether it's better or worse +on Tru64. +* Changed gc_cpp.h once more to declare operator new and friends only in +a Microsoft environment. This may need further fine tuning (thanks to +Johannes Schmidt for pointing out that the older code breaks on gcc3.0.4). +* Don't ever override strdup if it's already macro defined (thanks to +Adnan Ali for pointing out the problem). +* Changed gc_cpp.h yet again to also overload placement new. Due to the +C++ overloading rules, the other overloaded new operations otherwise hide +placement new, which causes many STL uses to break (thanks to Reza Shahidi +for reporting this, and to Matt Austern for proposing a fix). +* Integrated cygwin pthreads support from Dan Bonachea. +* Turn on DYNAMIC_LOADING for NetBSD (thanks to Krister Walfridsson). +* Changed printing code to print more complete GC times. +* Applied Mark Mitchell's Irix patch to correct some bit rot. +* Clarified which object-printing routines in dbg_mlc.c should hold +the allocation lock. Restructured the code to allow reasonable object +printing with -DREDIRECT_MALLOC. +* Fix the Linux mmap code to always start with 0x1000 as the initial hint. +Minor patches for 64-bit AIX, particularly to STACKBOTTOM (thanks to +Jeffrey Mark Siskind). +* Renamed "SUSPENDED" flag for Solaris threads support to avoid a conflict +with a system header (thanks to Philip Brown). +* Cause win32_threads.c to handle an out of range stack pointer correctly, +though currently with a warning. (Thanks to Jonathan Clark for +observing that win32 applications may temporarily use the stack +pointer for other purposes, and suggesting a fix. Unfortunately, it's +not clear that there is a complete solution to this problem.) + + +== [6.1alpha4] 2002-06-16 == + +* Fixed typo in sparc_mach_dep.S, preventing the 64-bit version from +building. Increased 64-bit heap size limit in test.c slightly, since +a functional SPARC collector seems to slightly exceed the old limits. +* Use NPRGREG in solaris_threads.c, thus printing all registers if things +go wrong. +* Added GC_MARKERS environment variable to allow use of a single marker +thread on an MP without confusing the lock implementation. +* Collect much less aggressively in incremental mode with GC_TIME_UNLIMITED. +This is really a purely generational mode, and we can afford to +postpone the collection until the heap is (nearly) full. +* Remove read() wrapper for MPROTECT_VDB. It was causing more harm than +good. It is often no longer needed if system calls avoid writing to +pointerfull heap objects. +* Fix MACOSX test in gcconfig.h (thanks to John Clements). +* Change GC_test_and_set so that it consistently has one argument. +Add spaces to ::: in powerpc assembly code in gc_locks.h (thanks to +Ryan Murray). +* Fixed a formatting error in dbg_mlc.c. Added prototype to GC_abort() +declaration (thanks to Michael Smith). +* Removed "source" argument to GC_find_start(). Eliminate GC_FIND_START(). +* Added win32 recognition code in configure.in. Changed some of the +dllimport/export defines in gc.h (thanks to Adam Megacz). +* GC_malloc_many didn't set hb_last_reclaimed when it called +GC_reclaim_generic. (I'm not sure this matters much, but ...) +* Allocating uncollectible objects with debug information sometimes +allocated objects that were one byte too small, since uncollectible +objects don't have the extra byte added at the end (thanks to +Wink Saville for pointing this out). +* Added a bit more assertion checking to make sure that gcj objects +on free lists never have a nonzero second word. +* Replaced BCC_MAKEFILE with an up-to-date one (thanks to Andre Leiradella). +* Upgraded libtool, cinfigure.in and some related files to hopefully +support NetBSD/SPARC (thanks to Adrian Bunk). Unfortunately, +libtool 1.4.2 seemed to be buggy due to missing quotes in several +"test" invocations. Fixed those in the ltmain.sh script. +* Some win32-specific patches, including the introduction of +GC_CreateThread (thanks to Adam Megacz). +* Merged in gcj changes from Anthony Green to support embedded systems. +* Tried to consistently rename preprocessed assembly files with a capital +.S extension. +* Use alpha_mach_dep.S on ALPHA again. It doesn't really matter, but this +makes our distribution consistent with the gcc one, avoiding future merge +problems. +* Move GET_MEM definition into gcconfig.h. Include gcconfig.h slightly +later in gc_priv.h to avoid forward references to ptr_t. +* Add some testing of local allocation to test.c. +* Change definition of INVALID_QTID in specific.h. The -1 value was used +inconsistently, and too likely to collide with a valid stack address. +Some general clean-up of specific.[ch]. Added assertions. (Thanks +to Michael Smith for tracking down an intermittent bug to this +general area. I'm not sure it has been squashed yet, however.) +* On Pthread systems it was not safe to call GC_malloc() between fork() +and exec(). According to the applicable standards, it doesn't appear +to be safe to call malloc() or many other libc functions either, thus +it's not clear this is fixable. Added experimental support for +-DHANDLE_FORK in linux_threads.c which tries to support it. It may +succeed if libc does the right thing. I'm not sure whether it does. +(Thanks to Kenneth Schalk for pointing out this issue.) +* Documented thread local allocation primitives to require an +explicit GC_init call. GC_init_parallel is no longer declared to +be a constructor function, since that isn't portable and often +seems to lead to initialization order problems. +* Changed gc_cpp.cc and gc_cpp.h in one more attempt to make them +compatible with Visual C++ 6 (thanks to Wink Saville for the patch). +* Some more patches for Linux on HP PA-RISC. +* Added include/gc_allocator.h. It implements (hopefully) standard +conforming (as opposed to SGI-style) allocators that allocate +collectible (gc_allocator) or GC-traceable, but not collectible +(traceable_allocator) objects. This borrows heavily from libstc++, +which borrows heavily from the SGI implementation, this part of +which was written by Matt Austern. Changed test_cpp.cc to very +minimally test this. +* On Linux/X86, retry mmap with a different start argument. That should +allow the collector to use more (closer to 3GB) of the address space. +* Force 64 bit alignment with GCJ support (reflects Bryce McKinlay's +patch to the gcc tree). +* Refined the choice of sa_handler vs. sa_sigaction in GC_dirty_init +to accommodate some glibc5 systems (thanks to Dan Fandrich for the patch). +* Compensated for the fact that current versions of glibc set +__libc_stack_end incorrectly on Linux/IA64 while initialization code +is running. This could cause the collector to miss 16 bytes of +the memory stack if GC_malloc or friends where called before main(). +* Mostly integrated Takis Psarogiannakopoulos' port to DG/UX Inix 86. +This will probably take another iteration to work, since his +patch conflicted with the libtool upgrade. +* Added README.arm.cross containing some information about cross- +compiling to an ARM processor from Margaret Fleck (original code provided by +Bradley D. LaRonde; edited by Andrej Cedilnik using some of solutions by +Tilman Vogel; also ported for iPAQ by Oliver Kurth). + + +== [6.1alpha3] 2002-02-07 == + +* Minor cleanup on the gcconfig.h section for SPARC. +* Minor fix to support Intel compiler for I386/Linux (thanks to +Sven Hartrumpf). +* Added SPARC V9 (64-bit) support (thanks to Jeff Sturm). +* Restructured the way in which we determine whether or not to keep +call stacks for debug allocation. By default SAVE_CALL_COUNT is +now zero on all platforms. Added SAVE_CALL_NARGS parameters. +If possible, use execinfo.h to capture call stack. (This should +add support for a number of new platforms, though often at +considerable runtime expense.) +* Try to print symbolic information for call stacks. On Linux, we +do this with a combination of execinfo.h and running addr2line in +a separate process. This is both much more expensive and much more +useful. Amazingly, it seems to be fast enough for most purposes. +* Redefined strdup if -DREDIRECT_MALLOC is given. +* Changed incremental collector and MPROTECT_VDB implementation so that, +under favorable conditions, pointer-free objects are not protected. +Added GC_incremental_protection_needs() to determine ahead of time whether +pointer-free objects may be protected. Replaced GC_write_hint() with +GC_remove_protection(). +* Added test for GC_ENABLE_INCREMENTAL environment variable. +* Made GC_time_limit runtime configurable. Added GC_PAUSE_TIME_TARGET +environment variable. +* Eliminated GC_page_sz, a duplicate of GC_page_size. +* Caused the Solaris and Irix thread creation primitives to call +GC_init_inner(). + + +== [6.1alpha2] 2001-12-20 == + +* No longer wrap read by default in multi-threaded applications. It was +pointed out on the libgcj list that this holds the allocation lock for +way too long if the read blocks. For now, reads into the heap are +broken with incremental collection. It's possible to turn this back on +if you make sure that read calls don't block (e.g. by calling select +first). +* Fix ifdef in Solaris_threads.h to refer to GC_SOLARIS_THREADS. +* Added check for environment variable GC_IGNORE_GCJ_INFO. +* Added printing of stop-the-world GC times if GC_PRINT_STATS environment +variable is set. +* The calloc definition in leak_detector.h was missing parentheses, and +realloc was missing a second argument to GC_REALLOC (thanks to +Elvenlord Elrond). +* Added GC_PRINT_BACK_HEIGHT environment variable and associated +code, mostly in the new file backgraph.c. See doc/README.environment. +* Added -DUSE_GLOBAL_ALLOC to work around a Windows NT issue (thanks to +Jonathan Clark). +* Integrated port to NEC EWS4800 (MIPS-based workstation, with somewhat +different address-space layout). This may help for other machines with +holes in the data segment. (Thanks to Hironori Sakamoto.) +* Changed the order in which GC_push_roots and friends push things onto +the mark stack. GC_push_all calls need to come first, since we can't +necessarily recover if those overflow the mark stack. (Thanks to +Matthew Flatt for tracking down the problem.) +* Some minor cleanups to mostly support the Intel compiler on Linux/IA64. + + +== [6.1alpha1] 2001-09-22 == + +* Non-debug, atomic allocations could result in bogus smashed object +reports with debugging on (thanks to Patrick Doyle for the small test case). +* Fixed GC_get_register_stack_base (Itanium only) to work around a glibc +2.2.4 bug. +* Initial port to HP/UX on Itanium. Thread support and both 32 and 64 +bit ABIs appear to work. Parallel mark support doesn't yet, due to +some inline assembly code issues. Thread local allocation does appear +to work. +* ifdef'ed out glibc2.1/Itanium workaround. I suspect nobody is using +that combination anymore. +* Added a patch to make new_gc_alloc.h usable with gcc3.0 (thanks to +Dimitris Vyzovitis for the patch). +* Debugged 64-bit support on HP/UX PA-RISC. +* Turned on dynamic loading support for FreeBSD/ELF (thanks to Peter Housel). +* Unregistering of finalizers with debugging allocation was broken (thanks +to Jani Kajala for the test case). +* Old finalizers were not returned correctly from GC_debug_register_finalizer. +* Disabled MPROTECT_VDB for Linux/M68K based on a report that it doesn't work. +* Cleaned up some statistics gathering code in reclaim.c (thanks to +Walter Bright). +* Added some support for OpenBSD/ELF/Linux (thanks to Suzuki Toshiya). +* Added Jakub Jelinek's patch to use dl_iterate_phdr for dynamic library +traversal to dyn_load.c. Changed it to weakly reference dl_iterate_phdr, +so that the old code is still used with old versions of glibc. +* Cleaned up feature test macros for various threads packages and +integrated (partially functional) FreeBSD threads code from Loren J. Rittle. +It's likely that the cleanup broke something, since it touched lots of +code. It's also likely that it fixed some unreported bugs in the +less common thread implementations, since some of the original code +didn't stand up to close scrutiny. Support for the next pthreads +implementation should be easier to add. + + +== [6.0] 2001-07-26 == + +* Two more bug fixes for KEEP_BACK_PTRS and DBG_HDRS_ALL. +* Fixed a stack clearing problem that resulted in SIGILL with a +misaligned stack pointer for multi-threaded SPARC builds. +* Integrated another HURD patch (thanks to Igor Khavkine). + + +== [6.0alpha9] == + +* added README.macros. +* Made gc.mak a symbolic link to work around winzip's tendency to ignore +hard links. +* Simplified the setting of NEED_FIND_LIMIT in os_dep.c, possibly breaking +it on untested platforms. +* Integrated initial GNU HURD port (thanks to Chris Lingard and +Igor Khavkine). +* A few more fixes for Digital Mars compiler (by Walter Bright). +* Fixed gcc version recognition. Renamed OPERATOR_NEW_ARRAY to +GC_OPERATOR_NEW_ARRAY. Changed GC_OPERATOR_NEW_ARRAY to be the default. +It can be overridden with -DGC_NO_OPERATOR_NEW_ARRAY (thanks to +Cesar Eduardo Barros). +* Changed the byte size to free-list mapping in thread local allocation +so that size 0 allocations are handled correctly. +* Fixed Linux/MIPS stackbottom for new toolchain (thanks to Ryan Murray). +* Changed finalization registration to invoke GC_oom_fn when it runs out +of memory. +* Removed lvalue cast in finalize.c. This caused some debug configurations +not to build with some non-gcc compilers. + + +== [6.0alpha8] 2001-06-15 == + +* Changed GC_debug_malloc_replacement and GC_debug_realloc_replacement +so that they compile under Irix (thanks to Dave Love). +* Updated powerpc_macosx_mach_dep.s so that it works if the collector +is in a dynamic library (thanks to Andrew Begel). +* Transformed README.debugging into debugging.html, updating and +expanding it in the process. Added gcdescr.html and tree.html +from the web site to the GC distribution. +* Fixed several problems related to PRINT_BLACK_LIST. This involved +restructuring some of the marker macros. +* Fixed some problems with the sizing of objects with debug information. +Finalization was broken KEEP_BACK_PTRS or PRINT_BLACK_LIST. Reduced the +object size with SHORT_DEBUG_HDRS by another word. +* The "Needed to allocate blacklisted ..." warning had inadvertently +been turned off by default, due to a buggy test in allchblk.c. Turned +it back on. +* Removed the marker macros to deal with 2 pointers in interleaved fashion. +They were messy and the performance improvement seemed minimal. We'll +leave such scheduling issues to the compiler. +* Changed Linux/PowerPC test to also check for __powerpc__ in response +to a discussion on the gcc mailing list. +* Removed the "static" from the jmp_buf declaration in GC_generic_push_regs +(suggested by Matthew Flatt). This was causing problems in +systems that register all of their own roots. It looks far more correct +to me without the "static" anyway. +* Fixed several problems with thread local allocation of pointer-free or +typed objects. The collector was reclaiming thread-local free lists, since +it wasn't following the link fields. +* There was apparently a long-standing race condition related to +multi-threaded incremental collection. A collection could be started and +a thread stopped between the memory unprotect system call and the setting of +the corresponding dirt bit. I believe this did not affect Solaris or PCR, +which use a different dirty-bit implementation. Fixed this by installing +signal handlers with sigaction instead of signal, and disabling the thread +suspend signal while in the write-protect handler. (It is unclear +whether this scenario ever actually occurred.) +* Incremental collection did not cooperate correctly with the PARALLEL_MARK +implementation of GC_malloc_many or the local_malloc primitives. It still +doesn't work well, but it shouldn't lose memory anymore. +* Integrated some changes from the gcc source tree that I had previously +missed (thanks to Bryce McKinlay for the reminder and patch). +* Added Makefile.direct as a copy of the default Makefile, which would +normally be overwritten if configure is run. +* Changed the gc.tar target in Makefile.direct to embed the version number +in the gc directory name. This will affect future tar file distributions. +* Changed the Irix dynamic library finding code to no longer try to +eliminate writable text segments under Irix6.x, since that is probably no +longer necessary, and can apparently be unsafe on occasion (thanks to +Shiro Kawai for pointing this out). +* GC_cleanup with GC_DEBUG enabled passed a real object base address to +GC_debug_register_finalizer_ignore_self, which expected a pointer past the +debug header. Call GC_register_finalizer_ignore_self instead, even with +debugging enabled (thanks to Jean-Daniel Fekete for catching this). +* The collector didn't build with call chain saving enabled but NARGS=0. +* Fixed up the GNU-style build files enough so that they work in some +obvious cases (thanks to Maarten Thibaut). +* Added initial port to Digital Mars compiler for win32 (thanks to Walter +Bright). + + +== [6.0alpha7] 2001-04-19 == + +* Added GC_finalizer_notifier. Fixed GC_finalize_on_demand. (The variable +actually wasn't being tested at the right points. The build-time flag +was.) +* Added Tom Tromey's S390 Linux patch. +* Added code to push GC_finalize_now in GC_push_finalizer_structures +(thanks to Matthew Flatt). +* Added GC_push_gc_structures() to push all GC internal roots. +* Integrated some FreeBSD changes from Matthew Flatt. +* It looks like USRSTACK is not always correctly defined under Solaris. +Hacked gcconfig.h to attempt to work around the problem. The result +is not well tested. (Thanks again to Matthew Flatt for pointing this out.) +* Added Ji-Yong Chung's win32 threads and C++ fixes. +* Arranged for hpux_test_and_clear.s to no longer be needed or built. +It was causing build problems with gas, and it's not clear this is +better than the pthreads alternative on this platform. +* Some MINGW32 fixes from Hubert Garavel. +* Added initial Hitachi SH4 port from Kaz Kojima. +* Ported thread-local allocation and parallel mark code to HP/UX on PA_RISC. +* Made include/gc_mark.h more public and separated out the really private +pieces. This is probably still not quite sufficient for clients that +want to supply their own kind of type information. But it's a start. +This involved lots of identifier renaming to make it namespace clean. +* Added GC_dont_precollect for clients that need complete control over +the root set. +* GC_is_visible didn't do the right thing with gcj objects. (Not that +many people are likely to care, but ...) +* Don't redefine read with GC_USE_LD_WRAP. +* Initial port to LINUX/HP_PA. Incremental collection and threads are not +yet supported. (Incremental collection should work if you have the +right kernel. Threads may work with a sufficiently patched pthread +library.) +* Changed gcconfig.h to recognize __i386__ as an alternative to i386 in +many places (thanks to Benjamin Lerman). +* Made win32_threads.c more tolerant of detaching a thread that it didn't +know about (thanks to Paul Nash). +* Added Makefile.am and configure.in from gcc to the distribution, with +minimal changes. For the moment, those are just placeholders. In the +future, we're planning to switch to a GNU-style build environment for +Un*x-like systems, though the old Makefile will remain as a backup. +* Turned off STUBBORN_ALLOC by default, and added it back as a Makefile +option. +* Redistributed some functions between malloc.c and mallocx.c, so that +simple statically linked apps no longer pull in mallocx.o. +* Changed large object allocation to clear the first and last few words +of each block before releasing the lock. Otherwise the marker could see +objects with nonsensical type descriptors. +* Fixed a couple of subtle problems that could result in not recognizing +interior pointers from the stack. (I believe these were introduced +in 6.0alpha6.) +* GC_debug_free_inner called GC_free, which tried to reacquire the +allocator lock, and hence deadlocked. (DBG_HDRS_ALL probably never worked +with threads.) +* Fixed several problems with back traces. Accidental references to a free +list could cause the free list pointer to be overwritten by a back pointer. +There seemed to be some problems with the encoding of root and finalizer +references. + + +== [6.0alpha6] == + +* Changed the definition of DATASTART on ALPHA and IA64, where data_start +and __data_start are not defined by earlier versions of glibc. This might +need to be fixed on other platforms as well. +* Changed the way the stack base and backing store base are found on IA64. +This should now remain reliable on future kernels. But since it relies +on /proc, it will no longer work in the simulated NUE environment. +* Made the call to random() in dbg_mlc.c with -DKEEP_BACK_PTRS dependent +on the OS. On non-Unix systems, rand() should be used instead. Handled +small RAND_MAX (thanks to Peter Ross for pointing this out). +* Fixed the cord make rules to create the cord subdirectory, if necessary +(thanks to Doug Moen). +* Changed fo_object_size calculation in finalize.c. Turned finalization +of non-heap object into a no-op. Removed anachronism from GC_size() +implementation. +* Changed GC_push_dirty call in solaris_threads.c to GC_push_selected. +It was missed in a previous renaming (thanks to Vladimir Tsichevski +for pointing this out). +* Arranged to not mask SIGABRT in linux_threads.c (thanks to Bryce McKinlay). +* Added GC_no_dls hook for applications that want to register their own +roots. +* Integrated Kjetil Matheussen's Amiga changes. +* Added FREEBSD_STACKBOTTOM. Changed the X86/FreeBSD port to use it +(thanks to Matthew Flatt). +* Added pthread_detach interception for platforms supported by linux_threads.c +and irix_threads.c. +* Changed the USE_MMAP code to check for the case in which we got the +high end of the address space, i.e. mem_ptr + mem_sz == 0. It appears +that this can happen under Solaris 7. It seems to be allowed by what +I would claim is an oversight in the mmap specification. (Thanks to +Toshio Endo for pointing out the problem.) +* Cleanup of linux_threads.c. Some code was originally cloned from +irix_threads.c and now unnecessary. Some comments were obviously wrong. +* (Mostly) fixed a longstanding problem with setting of dirty bits from +a signal handler. In the presence of threads, dirty bits could get lost, +since the etting of a bit in the bit vector was not atomic with respect +to other updates. The fix is 100% correct only for platforms for which +GC_test_and_set is defined. The goal is to make that all platforms with +thread support. Matters only if incremental GC and threads are both +enabled. +* made GC_all_interior_pointers (a.k.a. ALL_INTERIOR_POINTERS) an +initialization time, instead of build-time option. This is a +nontrivial, high risk change. It should slow down the code measurably +only if MERGE_SIZES is not defined, which is a very nonstandard +configuration. +* Added doc/README.environment, and implemented what it describes. This +allows a number of additional configuration options to be set through +the environment. It documents a few previously undocumented options. +* Integrated Eric Benson's leak testing improvements. +* Removed the option to throw away the beginning of each page (DISCARD_WORDS). +This became less and less useful as processors enforce stricter alignment. +And it hadn't been tested in ages, and was thus probably broken anyway. + + +== [6.0alpha5] == + +* Changed the definition of GC_pause in linux_threads.c to use a volatile +asm. Some versions of gcc apparently optimize away writes to local volatile +variables. This caused poor locking behavior starting at about +4 processors. +* Added GC_start_blocking(), GC_end_blocking() calls and wrapper for sleep +to linux_threads.c. +The first two calls could be used to generally avoid sending GC signals to +blocked threads, avoiding both premature wakeups and unnecessary overhead. +* Fixed a serious bug in thread-local allocation. At thread termination, +GC_free could get called on small integers. Changed the code for thread +termination to more efficiently return left-over free-lists. +* Integrated Kjetil Matheussen's BeOS support. +* Rearranged the directory structure to create the doc and tests +subdirectories. +* Sort of integrated Eric Benson's patch for OSF1. This provided basic +OSF1 thread support by suitably extending hpux_irix_threads.c. Based +on earlier email conversations with David Butenhof, I suspect that it +will be more reliable in the long run to base this on linux_threads.c +instead. Thus I attempted to patch up linux_threads.c based on Eric's code. +The result is almost certainly broken, but hopefully close enough that +someone with access to a machine can pick it up. +* Integrated lots of minor changes from the NetBSD distribution. (These +were supplied by David Brownlee. I'm not sure about the original +authors.) +* Hacked a bit more on the HP/UX thread-support in linux_threads.c. It +now appears to work in the absence of incremental collection. Renamed +hpux_irix_threads.c back to irix_threads.c, and removed the attempt to +support HPUX there. +* Changed gc.h to define _REENTRANT in cases in which it should already +have been defined. It is still safer to also define it on the command +line. + + +== [6.0alpha4] == + +* Moved up the detection of mostly full blocks to the initiation of the +sweep phase. This eliminates some lock contention in the PARALLEL_MARK case, +as multiple threads try to look at mostly full blocks concurrently. +* Restored the code in GC_malloc_many that grabs a prefix of the global +free list. This avoids the case in which every GC_malloc_many call +tries and fails to allocate a new heap block, and the returns a single +object from the global free list. +* Some minor fixes in new_hblk.c. (Attempted to build free lists in order +of increasing addresses instead of decreasing addresses for cache performance +reasons. But this seems to be only a very minor gain with -DEAGER_SWEEP, +and a loss in other cases. So the change was backed out.) +* Fixed some of the documentation (thanks in large part to Fergus Henderson). +* Fixed the Linux USE_PROC_FOR_LIBRARIES code to deal with apps that perform +large numbers of mmaps (thanks to Eric Benson). Also fixed that code to +deal with short reads. +* Added GC_get_total_bytes(). +* Fixed leak detection mode to avoid spurious messages under linuxthreads. +(This should also now be easy for the other supported threads packages. +But the code is tricky enough that I'm hesitant to do it without being able +to test. Everything allocated in the GC thread support itself should be +explicitly deallocated.) +* Made it possible (with luck) to redirect malloc to GC_local_malloc. + + +== [6.0alpha3] 2000-09-26 == + +* Fixed the /proc/self/maps code to not seek, since that apparently is not +reliable across all interesting kernels. +* Fixed some compilation problems in the absence of PARALLEL_MARK +(introduced in alpha2). +* Fixed an algorithmic problem with PARALLEL_MARK. If work needs to +be given back to the main mark "stack", the BOTTOM entries of the local +stack should be given away, not the top ones. This has substantial +performance impact, especially for > 2 processors, from what I can tell. +* Extracted gc_lock.h from gc_priv.h. This should eventually make it a +bit easier to avoid including gc_priv.h in clients. +* Moved all include files to include/ and removed duplicate links to the +same file. The old scheme was a bad idea because it was too easy to get the +copies out of sync, and many systems don't support hard links. +Unfortunately, it's likely that I broke some of the non-Unix Makefiles in +the process, although I tried to update them appropriately. +* Removed the partial support for a copied nursery. It's not clear that +this would be a tremendous win, since we don't consistently lose to +generational copying collectors. And it would significantly complicate +many things. May be reintroduced if/when it really turns out to win. +* Removed references to IRIX_JDK_THREADS, since I believe there never +were and never will be any clients. +* Added some code to linux_threads.c to possibly support HPUX threads +using the Linux code. Unfortunately, it doesn't work yet, and is +currently disabled. +* Added support under Linux/X86 for saving the call chain, both in (debug) +objects for client debugging, and in GC_arrays._last_stack for GC +debugging. This was previously supported only under Solaris. It is +not enabled by default under X86, since it requires that code be compiled +to explicitly gave frame pointers on the call stack. (With gcc this +currently happens by default, but is often turned off explicitly.) +To turn it on, define SAVE_CALL_CHAIN. + + +== [6.0alpha2] == + +* Added USE_MARK_BYTES to reduce the need for compare-and-swap on platforms +for which that's expensive. +* Fixed a locking bug ib GC_gcj_malloc and some locking assertion problems. +* Added a missing volatile to OR_WORD and renamed the parameter to +GC_compare_and_swap so it's not a C++ reserved word (thanks to +Toshio Endo for pointing out both of those). +* Changed Linux dynamic library registration code to look at /proc/self/maps +instead of the rld data structures when REDIRECT_MALLOC is defined. +Otherwise some of the rld data data structures may be prematurely garbage +collected. +* Fixed USE_LD_WRAP a bit more, so it should now work without threads. +* Renamed XXX_THREADS macros to GC_XXX_THREADS for namespace correctness. +Temporarily added some backward compatibility definitions. Renamed +USE_LD_WRAP to GC_USE_LD_WRAP. +* Many MACOSX POWERPC changes, some additions to the gctest output, and +a few minor generic bug fixes (thanks to Dietmar Planitzer). + + +== [6.0alpha1] == + +* Added HP/PA prefetch support. +* Added -DDBG_HDRS_ALL and -DSHORT_DBG_HDRS to reduce the cost and improve +the reliability of generating pointer backtrace information, e.g. in +the Bigloo environment. +* Added parallel marking support (-DPARALLEL_MARK). This currently +works only under IA32 and IA64 Linux, but it shouldn't be hard to adapt +to other platforms. This is intended to be a lighter-weight (less +new code, probably not as scalable) solution than the work by Toshio Endo +et al, at the University of Tokyo. A number of their ideas were +reused, though the code wasn't, and the underlying data structure +is significantly different. In particular, we keep the global mark +stack as a single shared data structure, but most of the work is done +on smaller thread-local mark stacks. +* Changed GC_malloc_many to be cheaper, and to require less mutual exclusion +with -DPARALLEL_MARK. +* Added full support for thread local allocation under Linux +(-DTHREAD_LOCAL_ALLOC). This is a thin veneer on GC_malloc_many, and +should be easily portable to other platforms, especially those that +support pthreads. +* CLEAR_DOUBLE was not always getting invoked when it should have been. +* GC_gcj_malloc and friends used different out of memory handling than +everything else, probably because I forgot about one when I implemented +the other. They now both call GC_oom_fn(), not GC_oom_action(). +* Integrated Jakub Jelinek's fixes for Linux/SPARC. +* Moved GC_objfreelist, GC_aobjfreelist, and GC_words_allocd out of +GC_arrays, and separately registered the first two as excluded roots. +This makes code compiled with gc_inl.h less dependent on the +collector version. (It would be nice to remove the inclusion of +gc_priv.h by gc_inl.h completely, but we're not there yet. The +locking definitions in gc_priv.h are still referenced.) +This change was later conditioned on SEPARATE_GLOBALS, which +is not defined by default, since it involves a performance hit. +* Register GC_obj_kinds separately as an excluded root region. The +attempt to register it with GC_arrays was usually failing. (This wasn't +serious, but seemed to generate some confusion.) +* Moved backptr.h to gc_backptr.h. + + +== [5.4] == + +* Fixed a typo that prevented compilation with -DUSE_3DNOW_PREFETCH (thanks to +Shawn Wagner for actually testing this). +* Fixed GC_is_thread_stack in solaris_threads.c. It forgot to return a value +in the common case. +* Fixed another silly syntax problem in GC_double_descr (thanks to +Fergus Henderson for finding it). +* Fixed a GC_gcj_malloc bug: It tended to release the allocator lock twice. + + +== [5.3] 2000-09-24 == + +* Fixed _end declaration for OSF1. +* There were lots of spurious leak reports in leak detection mode, caused +by the fact that some pages were not being swept, and hence unmarked +objects weren't making it onto free lists. (This bug dated back to 5.0.) +* Fixed a typo in the liblinuxgc.so Makefile rule. +* Added the GetExitCodeThread to Win32 GC_stop_world to (mostly) work +around a Windows 95 GetOpenFileName problem (thanks to Jacob Navia). + + +== [5.2] == + +* dyn_load.c declared GC_scratch_last_end_ptr as an extern even if it +was defined as a macro. This prevented the collector from building on +Irix. +* We quietly assumed that indirect mark descriptors were never 0. +Our own typed allocation interface violated that. This could result +in segmentation faults in the marker with typed allocation. +* Fixed a _DUSE_MUNMAP bug in the heap block allocation code (thanks to +Ben Hutchings for the patch). +* Taught the collector about VC++ handling array operator new (thanks to +Ben Hutchings for the patch). +* The two copies of gc_hdrs.h had diverged. Made one a link to the other +again. + + +== [5.1] == + +* Fixed a gc.h header bug which showed up under Irix (thanks to Dan Sullivan). +* Fixed a typo in GC_double_descr in typd_mlc.c. +This probably could result in objects described by array descriptors not +getting traced correctly (thanks to Ben Hutchings for pointing this out). +* The block nearly full tests in reclaim.c were not correct for 64 bit +environments. This could result in unnecessary heap growth under unlikely +conditions. + + +== [5.0] == + +* Fixed threadlibs.c for linux threads. -DUSE_LD_WRAP was broken and +-ldl was omitted. Fixed Linux stack finding code to handle +-DUSE_LD_WRAP correctly. +* Added MSWIN32 exception handler around marker, so that the collector +can recover from root segments that are unmapped during the collection. +This caused occasional failures under Windows 98, and may also be +an issue under Windows NT/2000. + + +== [5.0alpha7] == + +* -DREDIRECT_MALLOC was broken in alpha6. Fixed. +* Cleaned up gc_ccp.h slightly, thus also causing the HP C++ compiler to +accept it. +* Removed accidental reference to dbg_mlc.c, which caused dbg_mlc.o to be +linked into every executable. +* Added PREFETCH to bitmap marker. Changed it to use the header cache. +* GC_push_marked sometimes pushed one object too many, resulting in a +segmentation fault in GC_mark_from_mark_stack. This was probably an old +bug. It finally showed up in gctest on win32. +* Gc_priv.h erroneously #defined GC_incremental to be TRUE instead of FALSE +when SMALL_CONFIG was defined. This was no doubt a major performance bug for +the default win32 configuration. +* Removed -DSMALL_CONFIG from NT_MAKEFILE. It seemed like an anachronism now +that the average PC has 64MB or so. +* Integrated Bryce McKinlay's patches for linux threads and dynamic loading +from the libgcj tree. Turned on dynamic loading support for Linux/PPC. +* Changed the stack finding code to use environ on HP/UX (thanks +to Gustavo Rodriguez-Rivera for the suggestion). This should +probably be done on other platforms, too. Since I can't test those, that'll +wait until after 5.0. + + +== [5.0alpha6] == + +* GC_malloc_explicitly_typed and friends sometimes failed to +initialize first word. +* Added allocation routines and support in the marker for mark descriptors +in a type structure referenced by the first word of an object. This was +introduced to support gcj, but hopefully in a way that makes it +generically useful. +* Added GC_requested_heapsize, and inhibited collections in non-incremental +mode if the actual used heap size is less than what was explicitly +requested. +* The Solaris pthreads version of GC_pthread_create didn't handle a NULL +attribute pointer. Solaris thread support used the wrong default thread +stack size (thanks to Melissa O'Neill for the patch). +* Changed PUSH_CONTENTS macro to no longer modify first parameter. +This usually doesn't matter, but it was certainly an accident waiting +to happen ... +* Added GC_register_finalizer_no_order and friends to gc.h. They're +needed by Java implementations. +* Integrated a fix for a win32 deadlock resulting from clock() calling +malloc (thanks to Chris Dodd). +* Integrated Hiroshi Kawashima's port to Linux/MIPS. This was designed +for a handheld platform, and may or may not be sufficient for other +machines. +* Fixed a va_arg problem with the %c specifier in cordprnt.c. It appears +that this was always broken, but recent versions of gcc are the first to +report the (statically detectable) bug. +* Added an attempt at a more general solution to dlopen races/deadlocks. +GC_dlopen now temporarily disables collection. Still not ideal, but ... +* Added -DUSE_I686_PREFETCH, -DUSE_3DNOW_PREFETCH, and support for IA64 +prefetch instructions. May improve performance measurably, but I'm not +sure the code will run correctly on processors that don't support the +instruction. Won't build except with very recent gcc. +* Added caching for header lookups in the marker. This seems to result +in a barely measurable performance gain. Added support for interleaved +lookups of two pointers, but unconfigured that since the performance +gain is currently near zero, and it adds to code size. +* Changed Linux DATA_START definition to check both data_start and +__data_start, since nothing else seems to be portable. +* Added -DUSE_LD_WRAP to optionally take advantage of the GNU ld function +wrapping mechanism. Probably currently useful only on Linux. +* Moved some variables for the scratch allocator into GC_arrays (suggested +by Martin Hirzel). +* Fixed a win32 threads bug that caused the collector to not look for +interior pointers from one of the thread stacks without +ALL_INTERIOR_POINTERS (thanks to Jeff Sturm). +* Added Mingw32 support (thanks to Jeff Sturm for the patch). +* Changed the alpha port to use the generic register scanning code instead +of alpha_mach_dep.s. Alpha_mach_dep.s doesn't look for pointers in fp +registers, but gcc sometimes spills pointers there (thanks to Manuel Serrano +for helping debug this). Changed the IA64 code to +do something similar for similar reasons. + + +== [5.0alpha4] 1999-10-30 == + +* Added protection fault handling patch for Linux/M68K from Fergus +Henderson and Roman Hodek. +* Removed the tests for SGI_SOURCE in new_gc_alloc.h. This was causing that +interface to fail on non-SGI platforms. +* Changed the Linux stack finding code to use /proc, after changing it +to use HEURISTIC1 (thanks to David Mossberger for pointing out /proc hook). +* Added HP/UX incremental GC support and HP/UX 11 thread support. +Thread support is currently still flaky. +* Added basic Linux/IA64 support. +* Integrated Anthony Green's PicoJava support. +* Integrated Scott Ananian's StrongARM/NetBSD support. +* Fixed some fairly serious performance bugs in the incremental +collector. These have probably been there essentially forever. +(Mark bits were sometimes set before scanning dirty pages. +The reclaim phase unnecessarily dirtied full small object pages.) +* Changed the reclaim phase to ignore nearly full pages to avoid +touching them. +* Limited GC_black_list_spacing to roughly the heap growth increment. +* Changed full collection triggering heuristic to decrease full GC +frequency by default, but to explicitly trigger full GCs during +heap growth. This doesn't always improve things, but on average it's +probably a win. +* GC_debug_free(0, ...) failed (thanks to Fergus Henderson for the +bug report and fix). + + +== [5.0alpha3] 1999-09-15 == + +(Also known as 4.15alpha3.) +* Added some highly incomplete code to support a copied young generation. +Comments on nursery.h are appreciated. +* Changed -DFIND_LEAK, -DJAVA_FINALIZATION, and -DFINALIZE_ON_DEMAND, +so the same effect could be obtained with a runtime switch. This is +a step towards standardizing on a single dynamic GC library. +* Significantly changed the way leak detection is handled, as a consequence +of the above. + + +== [5.0alpha2] 1999-07-23 == + +* Fixed bugs introduced in alpha1 (OpenBSD & large block initialization). +* Added -DKEEP_BACK_PTRS and backptr.h interface. (The implementation +idea came from Alan Demers.) + + +== [5.0alpha1] 1999-06-30 == + +(Also known as 4.15alpha1.) +* Reworked large block allocator. Now uses multiple doubly linked free +lists to approximate best fit. +* Changed heap expansion heuristic. Entirely free blocks are no longer +counted towards the heap size. This seems to have a major impact on +heap size stability; the old version could expand the heap way too +much in the presence of large block fragmentation. +* added -DGC_ASSERTIONS and some simple assertions inside the collector. +This is mainlyt for collector debugging. +* added -DUSE_MUNMAP to allow the heap to shrink. Supported on only +a few UNIX-like platforms for now. +* added GC_dump_regions() for debugging of fragmentation issues. +* Changed PowerPC pointer alignment under Linux to 4. +* Changed the Linux/Alpha port to walk the data segment backwards until +it encounters a SIGSEGV. The old way to find the start of the data +segment broke with a recent release. +* cordxtra.c needed to call GC_REGISTER_FINALIZER instead of +GC_register_finalizer, so that it would continue to work with GC_DEBUG. +* allochblk sometimes cleared the wrong block for debugging purposes +when it dropped blacklisted blocks. This could result in spurious +error reports with GC_DEBUG. +* added MACOS X Server support (thanks to Andrew Stone). +* Changed the Solaris threads code to ignore stack limits > 8 MB with +a warning. Empirically, it is not safe to access arbitrary pages +in such large stacks. And the dirty bit implementation does not +guarantee that none of them will be accessed. +* Integrated Martin Tauchmann's Amiga changes. +* Integrated James Dominy's OpenBSD/SPARC port. + + +== [4.14] 1999-04-16 == + +* changed STACKBOTTOM for DJGPP (thanks to Salvador Eduardo Tropea). + + +== [4.14alpha2] 1999-03-26 == + +* -DSMALL_CONFIG did not work reliably with large (> 4K) pages. +Recycling the mark stack during expansion could result in a size +zero heap segment, which confused things. (This was probably also an +issue with the normal config and huge pages.) +* Did more work to make sure that callee-save registers were scanned +completely, even with the setjmp-based code. Added USE_GENERIC_PUSH_REGS +macro to facilitate testing on machines I have access to. +* Added code to explicitly push register contents for win32 threads. +This seems to be necessary. (Thanks to Pierre de Rop.) + + +== [4.14alpha1] 1999-03-10 == + +* Fixed GC_print_source_ptr to not use a prototype. +* generalized CYGWIN test. +* gc::new did the wrong thing with PointerFreeGC placement (thanks to +Rauli Ruohonen). +* In the ALL_INTERIOR_POINTERS (default) case, some callee-save register +values could fail to be scanned if the register was saved and +reused in a GC frame. This showed up in verbose mode with gctest +compiled with an unreleased SGI compiler. I vaguely recall an old +bug report that may have been related. The bug was probably quite old. +(The problem was that the stack scanning could be deferred until +after the relevant frame was overwritten, and the new save location +might be outside the scanned area. Fixed by more eager stack scanning.) +* PRINT_BLACK_LIST had some problems. A few source addresses were garbage. +* Replaced Makefile.dj and added -I flags to cord make targets (thanks to +Gary Leavens). +* GC_try_to_collect was broken with the non-incremental collector. +* gc_cleanup destructors could pass the wrong address to +GC_register_finalizer_ignore_self in the presence of multiple +inheritance (thanks to Darrell Schiebel). +* Changed PowerPC Linux stack finding code. + + +== [4.13] 1999-02-19 == + +* Fixed a crucial bug in the Watcom port. There was a redundant declaration +of GC_push_one in gc_priv.h. +* Added FINALIZE_ON_DEMAND. +* Fixed some pre-ANSI cc problems in test.c. +* Removed getpagesize() use for Solaris. It seems to be missing in one +or two versions. +* Fixed bool handling for SPARCCompiler version 4.2. +* Fixed some files in include that had gotten unlinked from the main +copy. +* Some RS/6000 fixes (missing casts). (Thanks to Toralf Foerster.) +* Fixed several problems in GC_debug_realloc, affecting mostly the +FIND_LEAK case. +* GC_exclude_static_roots contained a buggy unsigned comparison to +terminate a loop (thanks to Wilson Ho). +* CORD_str failed if the substring occurred at the last possible position. +(Only affects cord users.) +* Fixed Linux code to deal with RedHat 5.0 and integrated Peter Bigot's +os_dep.c code for dealing with various Linux versions. +* Added workaround for Irix pthreads sigaction bug and possible signal +misdirection problems. + + +== [4.13alpha3] 1998-12-08 == + +* Fixed MSWIN32 recognition test, which interfered with cygwin. +* Removed unnecessary gc_watcom.asm from distribution. Removed +some obsolete README.win32 text. +* Added Alpha Linux incremental GC support (thanks to Philipp Tomsich +for code for retrieving the fault address in a signal handler). +Changed Linux signal handler context argument to be a pointer. +* Took care of some new warnings generated by the 7.3 SGI compiler. +* Integrated Phillip Musumeci's FreeBSD/ELF fixes. +* -DIRIX_THREADS was broken with the -o32 ABI (typo in gc_priv.h). + + +== [4.13alpha2] 1998-08-08 == + +* Fixed more Linux threads problems. +* Changed default GC_free_space_divisor to 3 with new large block allocation +(thanks to Matthew Flatt for some measurements that suggest the old +value sometimes favors space too much over time). +* More CYGWIN32 fixes. +* Integrated Tyson Dowd's Linux-M68K port. +* Minor HP PA and DEC UNIX fixes from Fergus Henderson. +* Integrated Christoffe Raffali's Linux-SPARC changes. +* Allowed for one more GC fixup iteration after a full GC in incremental +mode. Some quick measurements suggested that this significantly +reduces pause times even with smaller GC_RATE values. +* Moved some more GC data structures into GC_arrays. This decreases +pause times and GC overhead, but makes debugging slightly less convenient. +* Fixed namespace pollution problem ("excl_table"). +* Made GC_incremental a constant for -DSMALL_CONFIG, hopefully shrinking +that slightly. +* Added some win32 threads fixes. +* Integrated Ivan Demakov and David Stes' Watcom fixes. +* Various other minor fixes contributed by many people. +* Renamed config.h to gcconfig.h, since config.h tends to be used for +many other things. +* Integrated Matthew Flatt's support for 68K MacOS "far globals". +* Fixed up some of the dynamic library Makefile targets for consistency +across platforms. +* Fixed a USE_MMAP typo that caused out-of-memory handling to fail +on Solaris. +* Added code to test.c to test thread creation a bit more. +* Integrated GC_win32_free_heap (as suggested by Ivan Demakov). +* Fixed Solaris 2.7 stack base finding problem. (This may actually +have been done in an earlier alpha release.) + + +== [4.13alpha1] 1998-02-17 == + +* Changed RS6000 STACKBOTTOM. +* Integrated Patrick Beard's Mac changes. +* Alpha1 didn't compile on Irix m.n, m < 6. +* Replaced Makefile.dj with a new one from Gary Leavens. +* Added Andrew Stitcher's changes to support SCO OpenServer. +* Added PRINT_BLACK_LIST, to allow debugging of high densities of false +pointers. +* Added code to debug allocator to keep track of return address +in GC_malloc caller, thus giving a bit more context. +* Changed default behavior of large block allocator to more +aggressively avoid fragmentation. This is likely to slow down the +collector when it succeeds at reducing space cost. +* Integrated Fergus Henderson's CYGWIN32 changes. They are untested, +but needed for newer versions. +* USE_MMAP had some serious bugs. This caused the collector to fail +consistently on Solaris with -DSMALL_CONFIG. +* Added Linux threads support (thanks to Fergus Henderson). + + +== [4.12] 1997-08-26 == + +* Fixed ElfW definition in dyn_load.c. +This prevented the dynamic library support from compiling on some +older ELF Linux systems. +* Fixed UTS4 port (which I apparently mangled during the integration). +(Thanks to Alistair Crooks.) +* "Make C++" failed on Suns with SC4.0, due to a problem with "bool". +Fixed in gc_priv.h. +* Added more pieces for GNU win32 (thanks to Timothy N. Newsham). +The current state of things should suffice for at least some +applications. +* Changed the out of memory retry count handling. (This matters only +if GC_max_retries > 0, which is no longer the default.) +* If a /proc read failed repeatedly, GC_written_pages was not updated +correctly (thanks to Peter Chubb for diagnosing this). +* Under unlikely circumstances, the allocator could infinite loop in +an out of memory situation (thanks to Kenjiro Taura for +identifying the problem and supplying a fix). +* Fixed a syntactic error in the DJGPP code. Also fixed a test program +problem with DJGPP (thanks to Fergus Henderson and Peter Monks). +* Atomic uncollectible objects were not treated correctly by the +incremental collector. This resulted in weird log statistics and +occasional performance problems (thanks to Peter Chubb for pointing this out). +* Fixed some problems resulting from compilers that don't define +__STDC__. In this case void * and char * were used inconsistently +in some cases. (Void * should not have been used at all. If +you have an ANSI superset compiler that does not define __STDC__, +please compile with -D__STDC__=0. Thanks to Manuel Serrano and others +for pointing out the problem.) +* Fixed a compilation problem on Irix with -n32 and -DIRIX_THREADS. +Also fixed some other IRIX_THREADS problems which may or may not have +had observable symptoms. +* Fixed an HP PA compilation problem in dyn_load.c (thanks to +Philippe Queinnec). +* SEGV fault handlers sometimes did not get reset correctly (thanks +to David Pickens). +* Added a fix for SOLARIS_THREADS on Intel (thanks to David Pickens). +This probably needs more work to become functional. +* Fixed struct sigcontext_struct in os_dep.c for compilation under +Linux 2.1.X (thanks to Fergus Henderson). +* Changed the DJGPP STACKBOTTOM and DATASTART values to those ones suggested +(by Kristian Kristensen). These may still not be right, but it is +it is likely to work more often than what was there before. They may +even be exactly right. +* Added a #include to test_cpp.cc. This appears to help +with HP/UX and gcc (thanks to Assar Westerlund). +* Version 4.11 failed to run in incremental mode on recent 64-bit Irix +kernels. This was a problem related to page unaligned heap segments. +Changed the code to page align heap sections on all platforms. +(I had mistakenly identified this as a kernel problem earlier. +It was not.) +* Version 4.11 did not make allocated storage executable, except on +one or two platforms, due to a bug in a #if test (thanks to David Grove +for pointing this out). +* Added sparc_sunos4_mach_dep.s to support Sun's compilers under SunOS4. +* Added GC_exclude_static_roots. +* Fixed the object size mapping algorithm. This shouldn't matter, +but the old code was ugly. +* Heap checking code could die if one of the allocated objects was +larger than its base address. (Unsigned underflow problem. Thanks +to Clay Spence for isolating the problem.) +* Added RS6000 (AIX) dynamic library support and fixed STACK_BOTTOM (thanks +to Fred Stearns). +* Added Fergus Henderson's patches for improved robustness with large +heaps and lots of blacklisting. +* Added Peter Chubb's changes to support Solaris Pthreads, to support +MMAP allocation in Solaris, to allow Solaris to find dynamic libraries +through /proc, to add malloc_typed_ignore_off_page, and a few other +minor features and bug fixes. +* The Solaris 2 port should not use sbrk. I received confirmation from +Sun that the use of sbrk and malloc in the same program is not +supported. The collector now defines USE_MMAP by default on Solaris. +* Replaced the djgpp makefile with Gary Leavens' version. +* Fixed MSWIN32 detection test. +* Added Fergus Henderson's patches to allow putting the collector into +a DLL under GNU win32. +* Added Ivan V. Demakov's port to Watcom C on X86. +* Added Ian Piumarta's Linux/PowerPC port. +* Added PointerFreeGC to the placement options in gc_cpp.h (suggested by +Brian Burton). This is of course unsafe, and may be controversial. +On the other hand, it seems to be needed often enough that it's worth +adding as a standard facility. +* Add Lars Farm's suggestions on building the collector for MacOS. + + +== [4.12alpha2] == + +(Changes not specified.) + + +== [4.11] 1996-12-03 == + +* Rationalized (hopefully) GC_try_to_collect in an incremental collection +environment. It appeared to not handle a call while a collection was in +progress, and was otherwise too conservative. +* Merged GC_reclaim_or_delete_all into GC_reclaim_all to get rid of some +code. +* Added Patrick Beard's Mac fixes, with substantial completely untested +modifications. +* Fixed the MPROTECT_VDB code to deal with large pages and imprecise +fault addresses (as on an UltraSPARC running Solaris 2.5). Note that this +was not a problem in the default configuration, which uses PROC_VDB. +* The DEC Alpha assembly code needed to restore $gp between calls (thanks to +Fergus Henderson for tracking this down and supplying a patch). +* The write command for "de" was completely broken for large files. +I used the easiest portable fix, which involved changing the semantics +so that f.new is written instead of overwriting f. That's safer anyway. +* Added README.solaris2 with a discussion of the possible problems of +mixing the collector's sbrk allocation with malloc/realloc. +* Changed the data segment starting address for SGI machines. The +old code failed under IRIX6. +* Required double word alignment for MIPS. +* Various minor fixes to remove warnings. +* Attempted to fix some Solaris threads problems (reported by Zhiying Chen). +In particular, the collector could try to fork a thread with the +world stopped as part of GC_thr_init. It also failed to deal with +the case in which the original thread terminated before the whole +process did. +* Added -DNO_EXECUTE_PERMISSION. This has a major performance impact +on the incremental collector under Irix, and perhaps under other +operating systems. +* Added some code to support allocating the heap with mmap. This may +be preferable under some circumstances. +* Integrated dynamic library support for HP (thanks to Knut Tvedten). +* Integrated James Clark's win32 threads support, and made a number +of changes to it (many of which suggested by Pontus Rydin). This is still +not 100% solid. +* Integrated Alistair G. Crooks' support for UTS4 running on an Amdahl +370-class machine. +* Fixed a serious bug in explicitly typed allocation. Objects requiring +large descriptors where handled in a way that usually resulted in +a segmentation fault in the marker (thanks to Jeremy Fitzhardinge +for helping to track this down). +* Added partial support for GNU win32 development (thanks to +Fergus Henderson). +* Added optional support for Java-style finalization semantics (thanks to +Patrick Bridges). This is recommended only for Java implementations. +* GC_malloc_uncollectable faulted instead of returning 0 when out of +memory (thanks to Daniel R. Grayson for noticing). +* Calls to GC_base before the collector was initialized failed on a +DEC Alpha (thanks to Matthew Flatt). +* Added base pointer checking to GC_REGISTER_FINALIZER in debugging mode +(thanks to Jeremy Fitzhardinge). +* GC_debug_realloc failed for uncollectible objects (thanks to +Jeremy Fitzhardinge). +* Explicitly typed allocation could crash if it ran out of memory (thanks to +Jeremy Fitzhardinge). +* Added minimal support for a DEC Alpha running Linux. +* Fixed a problem with allocation of objects whose size overflowed +ptrdiff_t. (This now fails unconditionally, as it should.) +* Added the beginning of Irix pthread support. +* Integrated Xiaokun Zhu's fixes for djgpp 2.01. +* Added SGI-style STL allocator support (gc_alloc.h). +* Fixed a serious bug in README.solaris2. +Multi-threaded programs must include +gc.h with SOLARIS_THREADS defined. +* Changed GC_free so it actually deallocates uncollectible objects (thanks +to Peter Chubb for pointing out the problem). +* Added Linux ELF support for dynamic libraries (thanks to Patrick Bridges). +* Changed the Borland cc configuration so that the assembler is not +required. +* Fixed a bug in the C++ test that caused it to fail in 64-bit +environments. + + +== [4.10t3] 1996-11-18 == + +Some changes related to threads support. + + +== [4.10] 1996-02-19 == + +* Fixed a typo around a call to GC_collect_or_expand in alloc.c. It broke +handling of out of memory. (Thanks to Patrick C. Beard for noticing.) + + +== [4.9] 1996-02-12 == + +* More README.debugging fixes. +* Objects ready for finalization, but not finalized in the same GC +cycle, could be prematurely collected. This occasionally happened +in test_cpp. +* Too little memory was obtained from the system for very large +objects. That could cause a heap explosion if these objects were +not contiguous (e.g. under PCR), and too much of them was blacklisted. +* Due to an improper initialization, the collector was too hesitant to +allocate blacklisted objects immediately after system startup. +* Moved GC_arrays from the data into the bss segment by not explicitly +initializing it to zero. This significantly +reduces the size of executables, and probably avoids some disk accesses +on program startup. It's conceivable that it might break a port that I +didn't test. +* Fixed EMX_MAKEFILE to reflect the gc_c++.h to gc_cpp.h renaming which +occurred a while ago. + + +== [4.8] 1995-11-20 == + +* Changed a "comment" in a MacOS specific part of mach_dep.c that caused +gcc to fail on other platforms. + + +== [4.7] 1995-11-18 == + +* Fixed some compilation problems with -DCHECKSUMS (thanks to Ian Searle). +* Updated some Mac specific files (to synchronize with Patrick C. Beard). +* Fixed a serious bug for machines with non-word-aligned pointers. +(Thanks to Patrick C. Beard for pointing out the problem. The collector +should fail almost any conceivable test immediately on such machines.) + + +== [4.6] 1995-11-09 == + +* Added Linux ELF support (thanks to Arrigo Triulzi). +* GC_base crashed if it was called before any other GC_ routines. +This could happen if a gc_cleanup object was allocated outside the heap +before any heap allocation. +* The heap expansion heuristic was not stable if all objects had finalization +enabled. Fixed finalize.c to count memory in finalization queue and +avoid explicit deallocation. Changed alloc.c to also consider this count. +(This is still not recommended. It's expensive if nothing else. Thanks +to John Ellis for pointing this out.) +* GC_malloc_uncollectable(0) was broken (thanks to Phong Vo for pointing +this out). +* The collector didn't compile under Linux 1.3.X (thanks to Fred Gilham for +pointing this out). The current workaround is ugly, but expected to be +temporary. +* Fixed a formatting problem for SPARC stack traces. +* Fixed some '=='s in os_dep.c that should have been assignments. +Fortunately these were in code that should never be executed anyway (thanks +to Fergus Henderson). +* Fixed the heap block allocator to only drop blacklisted blocks in small +chunks. Made BL_LIMIT self adjusting. (Both of these were in response +to heap growth observed by Paul Graham.) +* Fixed the Metrowerks/68K Mac code to also mark from a6 (thanks to +Patrick C. Beard). +* Significantly updated README.debugging. +* Fixed some problems with longjmps out of signal handlers, especially under +Solaris. Added a workaround for the fact that siglongjmp doesn't appear to +do the right thing with -lthread under Solaris. +* Added MSDOS/djgpp port (thanks to Mitch Harris). +* Added "make reserved_namespace" and "make user_namespace". The +first renames ALL "GC_xxx" identifiers as "_GC_xxx". The second is the +inverse transformation. Note that doing this is guaranteed to break all +clients written for the other names. +* descriptor field for kind NORMAL in GC_obj_kinds with ADD_BYTE_AT_END +defined should be -ALIGNMENT not WORDS_TO_BYTES(-1). This is +a serious bug on machines with pointer alignment of less than a word. +* GC_ignore_self_finalize_mark_proc didn't handle pointers to very near the +end of the object correctly. Caused failures of the C++ test on a DEC Alpha +with g++. +* gc_inl.h still had problems. Partially fixed. Added warnings at the +beginning to hopefully specify the remaining dangers. +* Added DATAEND definition to config.h. +* Fixed some of the .h file organization. Fixed "make floppy". + + +== [4.5] 1995-06-14 == + +* Fixed many minor and one major README bugs (thanks to Franklin Chen +for pointing out many of them). +* Fixed ALPHA/OSF/1 dynamic library support (thanks to Jonathan Bachrach). +* Added incremental GC support (MPROTECT_VDB) for Linux (with some +help from Bruno Haible). +* Altered SPARC recognition tests in gc.h and config.h (mostly as +suggested by Fergus Henderson). +* Added basic incremental GC support for win32, as implemented by +Windows NT and Windows 95. GC_enable_incremental is a no-op +under win32s, which doesn't implement enough of the VM interface. +* Added -DLARGE_CONFIG. +* Fixed GC_..._ignore_off_page to also function without +-DALL_INTERIOR_POINTERS. +* (Hopefully) fixed RS/6000 port. (Only the test was broken.) +* Fixed a performance bug in the non-incremental collector running +on machines supporting incremental collection with MPROTECT_VDB +(e.g. SunOS 4, DEC AXP). This turned into a correctness bug under +win32s with win32 incremental collection. (Not all memory protection +was disabled.) +* Fixed some ppcr related bit rot. +* Caused dynamic libraries to be unregistered before re-registering. +The old way turned out to be a performance bug on some machines. +* GC_root_size was not properly maintained under MSWIN32. +* Added -DNO_DEBUGGING and GC_dump. +* Fixed a couple of bugs arising with SOLARIS_THREADS + +REDIRECT_MALLOC. +* Added NetBSD/M68K port (thanks to Peter Seebach). +* Fixed a serious realloc bug. For certain object sizes, the collector +wouldn't scan the expanded part of the object. (Thanks to Clay Spence +for noticing the problem, and helping me to track it down.) + + +== [4.4] 1995-02-18 == + +* ASM_CLEAR_CODE was erroneously defined for HP +PA machines, resulting in a compile error. +* Fixed OS/2 Makefile to create a library (thanks to Mark Boulter). +* Gc_cleanup objects didn't work if they were created on +the stack. Fixed. +* One copy of Gc_cpp.h in the distribution was out of +synch, and failed to document some known compiler +problems with explicit destructor invocation. Partially +fixed. There are probably other compilers on which +gc_cleanup is miscompiled. +* Fixed Makefile to pass C compiler flags to C++ compiler. +* Added Mac fixes. +* Fixed os_dep.c to work around what appears to be +a new and different VirtualQuery bug under newer +versions of win32S. +* GC_non_gc_bytes was not correctly maintained by +GC_free. Fixed (thanks to James Clark). +* Added GC_set_max_heap_size. +* Changed allocation code to ignore blacklisting if it is preventing +use of a very large block of memory. This has the advantage +that naive code allocating very large objects is much more +likely to work. The downside is you might no +longer find out that such code should really use +GC_malloc_ignore_off_page. +* Changed GC_printf under win32 to close and reopen the file +between calls. FAT file systems otherwise make the log file +useless for debugging. +* Added GC_try_to_collect and GC_get_bytes_since_gc. These +allow starting an abortable collection during idle times. +This facility does not require special OS support. (Thanks to +Michael Spertus of Geodesic Systems for suggesting this. It was +actually an easy addition. Kumar Srikantan previously added a similar +facility to a now ancient version of the collector. At the time +this was much harder, and the result was less convincing.) +* Added some support for the Borland development environment (thanks +to John Ellis and Michael Spertus). +* Removed a misfeature from checksums.c that caused unexpected +heap growth (thanks to Scott Schwartz). +* Changed finalize.c to call WARN if it encounters a finalization cycle. +WARN is defined in gc_priv.h to write a message, usually to stdout. +In many environments, this may be inappropriate. +* Renamed NO_PARAMS in gc.h to GC_NO_PARAMS, thus adhering to my own +naming convention. +* Added GC_set_warn_proc to intercept warnings. +* Fixed Amiga port (thanks to Michel Schinz). +* Fixed a bug in mark.c that could result in an access to unmapped +memory from GC_mark_from_mark_stack on machines with unaligned +pointers. +* Fixed a win32 specific performance bug that could result in scanning of +objects allocated with the system malloc. +* Added REDIRECT_MALLOC. + + +== [4.3] 1994-12-23 == + +* Fixed SPARC alignment problem with GC_DEBUG. +* Fixed Solaris threads /proc workaround. The real +problem was an interaction with mprotect. +* Incorporated fix from Patrick Beard for gc_c++.h (now gc_cpp.h). +* Slightly improved allocator space utilization by +fixing the GC_size_map mechanism. +* Integrated some Sony News and MIPS RISCos 4.51 +patches (thanks to Nobuyuki Hikichi at Software Research Associates, +Inc., Japan). +* Fixed HP_PA alignment problem (thanks to Brian F. Dennis). +* Added GC_same_obj and friends. Changed GC_base +to return 0 for pointers past the end of large objects. +Improved GC_base performance with ALL_INTERIOR_POINTERS +on machines with a slow integer mod operation. +Added GC_PTR_ADD, GC_PTR_STORE, etc. to prepare +for preprocessor. +* changed the default on most UNIX machines to be that +signals are not disabled during critical GC operations. +This is still ANSI-conforming, though somewhat dangerous +in the presence of signal handlers. But the performance +cost of the alternative is sometimes problematic. +Can be changed back with a minor Makefile edit. +* renamed IS_STRING in gc.h, to CORD_IS_STRING, thus +following my own naming convention. Added the function +CORD_to_const_char_star. +* Fixed a gross bug in GC_finalize. Symptom: occasional +address faults in that function (thanks to Anselm Baird-Smith). +* Added port to ICL DRS6000 running DRS/NX. Restructured +things a bit to factor out common code, and remove obsolete +code. Collector should now run under SUNOS5 with either +mprotect or /proc dirty bits. (Thanks to Douglas Steel.) +* More bug fixes and workarounds for Solaris 2.X. (These were +mostly related to putting the collector in a dynamic library, +which didn't really work before. Also SOLARIS_THREADS +didn't interact well with dl_open.) (Thanks to Brian Lewis.) +* Fixed a serious performance bug on the DEC Alpha. The text +segment was getting registered as part of the root set. +(Amazingly, the result was still fast enough that the bug +was not conspicuous.) The fix works on OSF/1, version 1.3. +Hopefully it also works on other versions of OSF/1 ... +* Fixed a bug in GC_clear_roots. +* Fixed a bug in GC_generic_malloc_words_small that broke +gc_inl.h (reported by Antoine de Maricourt). +* Fixed some problems with cord/de under Linux. +* Fixed some cord problems, notably with CORD_riter4. +* Added DG/UX port (thanks to Ben A. Mesander). +* Added finalization registration routines with weaker ordering +constraints. (This is necessary for C++ finalization with +multiple inheritance, since the compiler often adds self-cycles.) +* Filled the holes in the SCO port (thanks to Michael Arnoldus). +* Completely rewritten the documentation in the interface gc_c++.h +(later renamed gc_cpp.h) making it both clearer and more precise (done by +John Ellis). +* The definition of accessibility now ignores pointers from a finalizable +object (an object with a clean-up function) to itself (done by John Ellis). +This allows objects with virtual base classes to be finalizable by the +collector. Compilers typically implement virtual base classes using +pointers from an object to itself, which under the old definition of +accessibility prevented objects with virtual base classes from ever +being collected or finalized. +* gc_cleanup now includes gc as a virtual base. This was enabled by +the change in the definition of accessibility (by John Ellis). +* Added support for operator new[] (by John Ellis). Since most compilers +don't yet support operator new[], it is conditionalized on +-DOPERATOR_NEW_ARRAY. The code is untested, but its trivial and looks +correct. +* The test program test_gc_c++ (later renamed test_cpp.cc) +tries to test for the C++-specific functionality not tested by the +other programs. +* Added unistd.h include to misc.c. (Needed for ppcr.) +* Added PowerMac port (thanks to Patrick C. Beard). +* Fixed "srcdir"-related Makefile problems. Changed things so +that all externally visible include files always appear in the +include subdirectory of the source. Made gc.h directly +includable from C++ code (thanks to Per Bothner). +* Changed Intel code to also mark from ebp (thanks to Kevin Warne). +* Renamed C++ related files so they could live in a FAT +file system (thanks to Charles Fiterman). +* Changed Windows NT Makefile to include C++ support in +gc.lib. Added C++ test as Makefile target. + + +== [4.2] 1994-08-03 == + +* Multiple bug fixes/workarounds in the Solaris threads version. +(It occasionally failed to locate some register contents for +marking. It also turns out that thr_suspend and friends are +unreliable in Solaris 2.3. Dirty bit reads appear +to be unreliable under some weird +circumstances. My stack marking code +contained a serious performance bug. The new code is +extremely defensive, and has not failed in several CPU +hours of testing. But no guarantees ...) +* Added MacOS support. (Thanks to Patrick C. Beard. +David Chase suggested several improvements.) +* Fixed several syntactic bugs in gc_c++.h and friends. (These +didn't bother g++, but did bother most other compilers.) +Fixed gc_c++.h finalization interface. +* 64 bit alignment for allocated objects was not guaranteed in a +few cases in which it should have been. +* Added GC_malloc_atomic_ignore_off_page. +* Added GC_collect_a_little. +* Added some prototypes to gc.h. +* Some other minor bug fixes (notably in Makefile). +* Fixed OS/2 / EMX port (thanks to Ari Huttunen). +* Fixed AmigaDOS port (thanks to Michel Schinz). +* Fixed the DATASTART definition under Solaris. There +was a 1 in 16K chance of the collector missing the first +64K of static data (and thus crashing). +* Fixed some blatant anachronisms in the README file. +* Fixed PCR-Makefile for upcoming PPCR release. + + +== [4.1] 1994-05-20 == + +* Changed finalization implementation to guarantee that +finalization procedures are called outside of the allocation +lock, making direct use of the interface a little less dangerous. +MAY BREAK EXISTING CLIENTS that assume finalizers +are protected by a lock. Since there seem to be few multi-threaded +clients that use finalization, this is hopefully not much of +a problem. +* Fixed a gross bug in CORD_prev. +* Fixed a bug in blacklst.c that could result in unbounded +heap growth during startup on machines that do not clear +memory obtained from the OS (e.g. win32S). +* Ported de editor to win32/win32S. (This is now the only +version with a mouse-sensitive UI. Thanks to Rob Haack for the +implementation based on the generic Windows application template.) +* Added GC_malloc_ignore_off_page to allocate large arrays +in the presence of ALL_INTERIOR_POINTERS. +* Changed GC_call_with_alloc_lock to not disable signals in +the single-threaded case. +* Reduced retry count in GC_collect_or_expand for garbage +collecting when out of memory. +* Made uncollectible allocations bypass black-listing, as they +should. +* Fixed a bug in typed_test in test.c that could cause (legitimate) +GC crashes. +* Fixed some potential synchronization problems in finalize.c +* Fixed a real locking problem in typd_mlc.c. +* Worked around an AIX 3.2 compiler feature that results in +out of bounds memory references. +* Partially worked around an IRIX5.2 beta problem (which may +or may not persist to the final release). +* Fixed a bug in the heap integrity checking code that could +result in explicitly deallocated objects being identified as +smashed. Fixed a bug in the dbg_mlc stack saving code +that caused old argument pointers to be considered live. +* Fixed a bug in CORD_ncmp (and hence CORD_str). +* Repaired the OS2 port, which had suffered from bit rot +in 4.0. Worked around what appears to be CSet/2 V1.0 +optimizer bug. +* Fixed a Makefile bug for target "c++". + + +== [4.0] 1994-04-07 == + +* Added support for Solaris threads (which was possible +only by reimplementing some fraction of Solaris threads, +since Sun doesn't currently make the thread debugging +interface available). +* Added non-threads win32 and win32S support. +* (Grudgingly, with suitable muttering of obscenities) renamed +files so that the collector distribution could live on a FAT +file system. Files that are guaranteed to be useless on +a PC still have long names. Gc_inline.h and gc_private.h +still exist, but now just include gc_inl.h and gc_priv.h. +* Fixed a really obscure bug in finalization that could cause +undetected mark stack overflows. (I would be surprised if +any real code ever tickled this one.) +* Changed finalization code to dynamically resize the hash +tables it maintains. (This probably does not matter for well- +-written code. It no doubt does for C++ code that overuses +destructors.) +* Added typed allocation primitives. Rewrote the marker to +accommodate them with more reasonable efficiency. This +change should also speed up marking for GC_malloc allocated +objects a little. See gc_typed.h for new primitives. (Thanks to +Zhong Shao performed much of the experimentation that led to the +current typed allocation facility.) +* Improved debugging facilities slightly. Allocation time +stack traces are now kept by default on SPARC/SUNOS4. (Thanks to +Scott Schwartz.) +* Added better support for small heap applications. +* Significantly extended cord package. Fixed a bug in the +implementation of lazily read files. Printf and friends now +have cord variants. Cord traversals are a bit faster. +* Made ALL_INTERIOR_POINTERS recognition the default. +* Fixed de so that it can run in constant space, independent +of file size. Added simple string searching to cords and de. +* Added the Hull-Ellis C++ interface (supplied by Jesse Hull and John Ellis). +* Added dynamic library support for OSF/1 (thanks to Alan Dosser and +Tim Bingham at DEC). +* Changed argument to GC_expand_hp to be expressed +in units of bytes instead of heap blocks. (Necessary +since the heap block size now varies depending on +configuration. The old version was never very clean.) +* Added GC_get_heap_size(). The previous "equivalent" +was broken. +* Restructured the Makefile a bit. +* Added FreeBSD port (provided by Jeffrey Hsu). + + +== [3.7] 1994-03-15 == + +* Added a workaround for an HP/UX compiler bug. +* Fixed another stack clearing performance bug. Reworked +that code once more. + + +== [3.6] 1994-01-14 == + +* fixed a bug in the mark stack growth code that was introduced +in 3.4. +* fixed Makefile to work around DEC AXP compiler tail recursion +bug. + + +== [3.5] == + +* Minor collections now mark from roots only once, if that +doesn't cause an excessive pause. +* The stack clearing heuristic was refined to prevent anomalies +with very heavily recursive programs and sparse stacks. +* Fixed a bug that prevented mark stack growth in some cases. +GC_objects_are_marked should be set to TRUE after a call +to GC_push_roots and as part of GC_push_marked, since +both can now set mark bits. I think this is only a performance +bug, but I wouldn't bet on it. It's certainly very hard to argue +that the old version was correct. +* Fixed an incremental collection bug that prevented it from +working at all when HBLKSIZE != getpagesize() +* Changed dynamic_loading.c to include gc_priv.h before testing +DYNAMIC_LOADING. SunOS dynamic library scanning +must have been broken in 3.4. +* Object size rounding now adapts to program behavior. +* Added a workaround (provided by Manuel Serrano and +colleagues) to a long-standing SunOS 4.X (and 3.X) ld bug +that I had incorrectly assumed to have been squished. +The collector was broken if the text segment size was within +32 bytes of a multiple of 8K bytes, and if the beginning of +the data segment contained interesting roots. The workaround +assumes a demand-loadable executable. The original may have +have "worked" in some other cases. +* Added dynamic library support under IRIX5. +* Added support for EMX under OS/2 (thanks to Ari Huttunen). +* Added support of Motorola 88K processor running CX/UX (by Brent Benson). + + +== [3.4] == + +* Fixed a performance bug in GC_realloc. +* Updated the amiga port. +* Added NetBSD and 386BSD ports (supplied by Alistair G. Crooks). +* Added cord library. +* Added trivial performance enhancement for +ALL_INTERIOR_POINTERS (do not scan last word). + + +== [3.3] 1993-10-02 == + +* PCR-specific bugs (thanks to Neil Sharman). +* Missing locking in GC_free, redundant FASTUNLOCK +in GC_malloc_stubborn, and 2 bugs in +GC_unregister_disappearing_link (pointed out by Neil Sharman). +* Common symbols allocated by the SunOS4.X dynamic loader +were not included in the root set. +* Bug in GC_finalize (reported by Brian Beuning and Alan Dosser). +* Merged Amiga port from Jesper Peterson (untested). +* Merged NeXT port from Thomas Funke (significantly +modified and untested). (Also thanks to Brian D. Carlstrom for +the supplied the NeXT ports.) + + +== [3.2] == + +Fixed a serious and not entirely repeatable bug in +the incremental collector. It appeared only when dirty bit info +on the roots was available, which is normally only under Solaris. +It also added GC_general_register_disappearing_link, and some +testing code. Interface.c disappeared. + + +== [3.1] == + +* A workaround for a SunOS 4.X SPARC C compiler +misfeature that caused problems when the collector was turned into +a dynamic library. +* A fix for a bug in GC_base that could result in a memory fault. +* A fix for a performance bug (and several other misfeatures) pointed +out by Dave Detlefs and Alan Dosser. +* Use of dirty bit information for static data under Solaris 2.X. +* DEC Alpha/OSF1 support (thanks to Alan Dosser). +* Incremental collection on more platforms. +* A more refined heap expansion policy. Less space usage by default. +* Various minor enhancements to reduce space usage, and to reduce +the amount of memory scanned by the collector. +* Uncollectible allocation without per object overhead. +* More conscientious handling of out-of-memory conditions. +* Fixed a bug in debugging stubborn allocation. +* Fixed a bug that resulted in occasional erroneous reporting of smashed +objects with debugging allocation. +* Fixed bogus leak reports of size 4096 blocks with FIND_LEAK. + + +== [3.0] == + +Added generational/incremental collection and stubborn objects. + + +== [2.6] 1993-04-27 == + +(Changes not specified.) + + +== [2.5] == + +* Removed an explicit call to exit(1) +* Fixed calls to GC_printf and GC_err_printf, so the correct number of +arguments are always supplied. The OS/2 C compiler gets confused if +the number of actuals and the number of formals differ. (ANSI C +doesn't require this to work. The ANSI sanctioned way of doing things +causes too many compatibility problems.) + + +== [2.4] 1993-01-26 == + +Added GC_free_space_divisor as a tuning knob, added +support for OS/2 and linux, and fixed the following bugs: +* On machines with unaligned pointers (e.g. Sun 3), every 128th word could +fail to be considered for marking. +* Dynamic_load.c erroneously added 4 bytes to the length of the data and +bss sections of the dynamic library. This could result in a bad memory +reference if the actual length was a multiple of a page. (Observed on +Sun 3. Can probably also happen on a Sun 4.) +(Thanks to Robert Brazile for pointing out that the Sun 3 version +was broken. Dynamic library handling is still broken on Sun 3s +under 4.1.1U1, but apparently not 4.1.1. If you have such a machine, +use -Bstatic.) + + +== [2.3] == + +* Added ALL_INTERIOR_POINTERS. +* Missing declaration of etext in the A/UX version. +* Some PCR root-finding problems. +* Blacklisting was not 100% effective, because the plausible future +heap bounds were being miscalculated. +* GC_realloc didn't handle out-of-memory correctly. +* GC_base could return a nonzero value for addresses inside free blocks. +* test.c wasn't really thread safe, and could erroneously report failure +in a multi-threaded environment. (The locking primitives need to be +replaced for other threads packages.) +* GC_CONS was thoroughly broken. +* On a SPARC with dynamic linking, signals stayed disabled while the +client code was running (thanks to Manuel Serrano). + + +== [2.2] == + +* GC_realloc could fail to extend the size of the object for certain large +object sizes. +* A blatant subscript range error in GC_printf, which unfortunately +wasn't exercised on machines with sufficient stack alignment constraints. +* GC_register_displacement did the wrong thing if it was called after +any allocation had taken place. +* The leak finding code would eventually break after 2048 byte +byte objects leaked. +* interface.c didn't compile. +* The heap size remained much too small for large stacks. +* The stack clearing code behaved badly for large stacks, and perhaps +on HP/PA machines. + + +== [2.1] == + +* The first stable version since 1.9. +* Added support for PPCR. + + +== [2.0] == + +* Introduced a consistent naming convention for collector +routines and added support for registering dynamic library data segments +in the standard mark_roots.c (original code supporting the SunOS dynamic +loader provided by Bill Janssen). Most of the data structures were revamped. +The treatment of interior pointers was completely changed. Finalization +was added. Support for locking was added. Object kinds were added. +We added a black listing facility to avoid allocating at addresses known +to occur as integers somewhere in the address space. Much of this +was accomplished by adapting ideas and code from the PCR collector. +The test program was changed and expanded. + + +== [1.9] 1992-01-29 == + +* fixed a major bug in gc_realloc. + + +== [1.8] == + +* added ULTRIX support in gc_private.h. (Robert Brazile originally supplied +the ULTRIX code. Alan Dosser and Regis Cridlig subsequently provided updates +and information on variation between ULTRIX systems.) + + +== [1.5] == + +* ensure 8 byte alignment for objects allocated on a sparc based machine. + + +== [1.4] == + +* Does not use compile time determined values +for the stack base. This no longer works on Sun 3s, since Sun 3/80s use +a different stack base. We now use a straightforward heuristic on all +machines on which it is known to work (incl. Sun 3s) and compile-time +determined values for the rest. There should really be library calls +to determine such values. + + +== [1.3] == + +* Fixed spurious +assembly language assignments to TMP_SP. Only the assignment in the PC/RT +code is necessary. On other machines, with certain compiler options, +the assignments can lead to an unsaved register being overwritten. +Known to cause problems under SunOS 3.5 WITHOUT the -O option. (With +-O the compiler recognizes it as dead code. It probably shouldn't, +but that's another story.) +The SPARC-specific code was originally contributed by Mark Weiser. +The Encore Multimax modifications were supplied by Kevin Kenny. +The adaptation to the IBM PC/RT is largely +due to Vernon Lee, on machines made available to Rice by IBM. +Much of the HP specific code and a number of good suggestions for improving +the generic code are due to Walter Underwood. +Parag Patel supplied the A/UX code. +Manuel Serrano supplied linux and Sony News specific code. diff --git a/EMX_MAKEFILE b/EMX_MAKEFILE new file mode 100644 index 0000000..c361434 --- /dev/null +++ b/EMX_MAKEFILE @@ -0,0 +1,113 @@ +# +# OS/2 specific Makefile for the EMX environment +# +# You need GNU Make 3.71, gcc 2.5.7, emx 0.8h and GNU fileutils 3.9 +# or similar tools. C++ interface and de.exe weren't tested. +# + +# Primary targets: +# gc.a - builds basic library +# c++ - adds C++ interface to library and include directory +# cords - adds cords (heavyweight strings) to library and include directory +# test - prints porting information, then builds basic version of gc.a, and runs +# some tests of collector and cords. Does not add cords or c++ interface to gc.a +# cord/de.exe - builds dumb editor based on cords. +CC= gcc +CXX=g++ +# Needed only for "make c++", which adds the c++ interface + +CFLAGS= -O -DALL_INTERIOR_POINTERS -I$(srcdir)/include +# Setjmp_test may yield overly optimistic results when compiled +# without optimization. + +CXXFLAGS= $(CFLAGS) +AR= ar +RANLIB= ar s + +# Redefining srcdir allows object code for the nonPCR version of the collector +# to be generated in different directories +srcdir = . +VPATH = $(srcdir) + +OBJS= alloc.o reclaim.o allchblk.o misc.o mach_dep.o os_dep.o mark_rts.o headers.o mark.o obj_map.o blacklst.o finalize.o new_hblk.o dyn_load.o dbg_mlc.o fnlz_mlc.o malloc.o stubborn.o checksums.o typd_mlc.o ptr_chck.o mallocx.o + +CORD_OBJS= cord/cordbscs.o cord/cordxtra.o cord/cordprnt.o + +CORD_INCLUDE_FILES= $(srcdir)/include/gc.h $(srcdir)/include/cord.h \ + $(srcdir)/include/ec.h $(srcdir)/include/cord_pos.h + +# Libraries needed for curses applications. Only needed for de. +CURSES= -lcurses -ltermlib + +SPECIALCFLAGS = -I$(srcdir)/include +# Alternative flags to the C compiler for mach_dep.c. +# Mach_dep.c often doesn't like optimization, and it's +# not time-critical anyway. + +all: gc.a gctest.exe + +$(OBJS) test.o: $(srcdir)/include/private/gc_priv.h \ + $(srcdir)/include/private/gc_hdrs.h $(srcdir)/include/gc.h \ + $(srcdir)/include/private/gcconfig.h $(srcdir)/include/gc_typed.h +# The dependency on Makefile is needed. Changing +# options affects the size of GC_arrays, +# invalidating all .o files that rely on gc_priv.h + +mark.o typd_mlc.o finalize.o: $(srcdir)/include/gc_mark.h $(srcdir)/include/private/gc_pmark.h + +gc.a: $(OBJS) + $(AR) ru gc.a $(OBJS) + $(RANLIB) gc.a + +cords: $(CORD_OBJS) cord/cordtest.exe + $(AR) ru gc.a $(CORD_OBJS) + $(RANLIB) gc.a + +gc_cpp.o: $(srcdir)/gc_cpp.cc $(srcdir)/include/gc_cpp.h + $(CXX) -c $(CXXFLAGS) $(srcdir)/gc_cpp.cc + +c++: gc_cpp.o $(srcdir)/include/gc_cpp.h + $(AR) ru gc.a gc_cpp.o + $(RANLIB) gc.a + +mach_dep.o: $(srcdir)/mach_dep.c + $(CC) -o mach_dep.o -c $(SPECIALCFLAGS) $(srcdir)/mach_dep.c + +mark_rts.o: $(srcdir)/mark_rts.c + $(CC) -o mark_rts.o -c $(CFLAGS) $(srcdir)/mark_rts.c + +cord/cordbscs.o: $(srcdir)/cord/cordbscs.c $(CORD_INCLUDE_FILES) + $(CC) $(CFLAGS) -c $(srcdir)/cord/cordbscs.c -o cord/cordbscs.o + +cord/cordxtra.o: $(srcdir)/cord/cordxtra.c $(CORD_INCLUDE_FILES) + $(CC) $(CFLAGS) -c $(srcdir)/cord/cordxtra.c -o cord/cordxtra.o + +cord/cordprnt.o: $(srcdir)/cord/cordprnt.c $(CORD_INCLUDE_FILES) + $(CC) $(CFLAGS) -c $(srcdir)/cord/cordprnt.c -o cord/cordprnt.o + +cord/cordtest.exe: $(srcdir)/cord/tests/cordtest.c $(CORD_OBJS) gc.a + $(CC) $(CFLAGS) -o cord/cordtest.exe $(srcdir)/cord/tests/cordtest.c $(CORD_OBJS) gc.a + +cord/de.exe: $(srcdir)/cord/tests/de.c $(srcdir)/cord/cordbscs.o $(srcdir)/cord/cordxtra.o gc.a + $(CC) $(CFLAGS) -o cord/de.exe $(srcdir)/cord/tests/de.c $(srcdir)/cord/cordbscs.o $(srcdir)/cord/cordxtra.o gc.a $(CURSES) + +clean: + rm -f gc.a tests/test.o gctest.exe output-local output-diff $(OBJS) \ + setjmp_test mon.out gmon.out a.out core \ + $(CORD_OBJS) cord/cordtest.exe cord/de.exe + -rm -f *~ + +gctest.exe: tests/test.o gc.a + $(CC) $(CFLAGS) -o gctest.exe tests/test.o gc.a + +# If an optimized setjmp_test generates a segmentation fault, +# odds are your compiler is broken. Gctest may still work. +# Try compiling setjmp_t.c unoptimized. +setjmp_test.exe: $(srcdir)/tools/setjmp_t.c $(srcdir)/include/gc.h + $(CC) $(CFLAGS) -o setjmp_test.exe $(srcdir)/tools/setjmp_t.c + +test: setjmp_test.exe gctest.exe + ./setjmp_test + ./gctest + make cord/cordtest.exe + cord/cordtest diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..205af63 --- /dev/null +++ b/Makefile.am @@ -0,0 +1,222 @@ +# Copyright (c) 1999-2001 by Red Hat, Inc. All rights reserved. +# +# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +# OR IMPLIED. ANY USE IS AT YOUR OWN RISK. +# +# Permission is hereby granted to use or copy this program +# for any purpose, provided the above notices are retained on all copies. +# Permission to modify the code and to distribute modified code is granted, +# provided the above notices are retained, and a notice that the code was +# modified is included with the above copyright notice. + +## Process this file with automake to produce Makefile.in. + +# Info (current:revision:age) for the Libtool versioning system. +# These numbers should be updated at most once just before the release, +# and, optionally, at most once during the development (after the release). +LIBGC_VER_INFO = 4:2:3 +LIBGCCPP_VER_INFO = 4:1:3 + +## FIXME: `make distcheck' in this directory will not currently work. +## This is most likely to the explicit flags passed to submakes. + +# We currently use the source files directly from libatomic_ops, if we +# use the internal version. This is done since libatomic_ops doesn't +# use libtool, since it has no real use for it. But that seems to make +# it hard to use either the resulting object files or libraries. +# Thus there seems to be no real reason to recursively build in the +# libatomic_ops directory. +# if USE_INTERNAL_LIBATOMICS_OPS +# SUBDIRS = @maybe_libatomic_ops@ +# else +# SUBDIRS = +# endif +SUBDIRS = + +ACLOCAL_AMFLAGS = -I m4 +AM_CPPFLAGS = \ + -I$(top_builddir)/include -I$(top_srcdir)/include \ + $(ATOMIC_OPS_CFLAGS) + +# Initialize variables so that we can declare files locally. +EXTRA_DIST = +lib_LTLIBRARIES = +include_HEADERS = +pkginclude_HEADERS = +dist_noinst_HEADERS = +check_PROGRAMS = +check_LTLIBRARIES = +TESTS = + +pkgconfigdir = $(libdir)/pkgconfig +pkgconfig_DATA = bdw-gc.pc + +# C Library +# --------- + +lib_LTLIBRARIES += libgc.la + +if SINGLE_GC_OBJ + +libgc_la_SOURCES = extra/gc.c + +if PTHREAD_START_STANDALONE +AM_CPPFLAGS += -DGC_PTHREAD_START_STANDALONE +libgc_la_SOURCES += pthread_start.c +endif + +else + +EXTRA_DIST += extra/gc.c +libgc_la_SOURCES = \ + allchblk.c alloc.c blacklst.c checksums.c dbg_mlc.c \ + dyn_load.c finalize.c gc_dlopen.c gcj_mlc.c headers.c \ + mach_dep.c malloc.c mallocx.c mark.c mark_rts.c misc.c new_hblk.c \ + obj_map.c os_dep.c pcr_interface.c ptr_chck.c real_malloc.c reclaim.c \ + specific.c stubborn.c typd_mlc.c + +# C Library: Architecture Dependent +# --------------------------------- + +if WIN32_THREADS +libgc_la_SOURCES += thread_local_alloc.c win32_threads.c +else +if PTHREADS +# Not Cygwin or MinGW. +libgc_la_SOURCES += pthread_start.c pthread_support.c thread_local_alloc.c +if DARWIN_THREADS +libgc_la_SOURCES += darwin_stop_world.c +else +libgc_la_SOURCES += pthread_stop_world.c +endif +endif +endif + +if MAKE_BACK_GRAPH +libgc_la_SOURCES += backgraph.c +endif + +if ENABLE_DISCLAIM +libgc_la_SOURCES += fnlz_mlc.c +endif + +# End of !SINGLE_GC_OBJ +endif + +if USE_INTERNAL_LIBATOMIC_OPS +nodist_libgc_la_SOURCES = libatomic_ops/src/atomic_ops.c +endif + +if NEED_ATOMIC_OPS_ASM +nodist_libgc_la_SOURCES = libatomic_ops/src/atomic_ops_sysdeps.S +endif + +# Include THREADDLLIBS here to ensure that the correct versions of +# linuxthread semaphore functions get linked: +libgc_la_LIBADD = @addobjs@ $(THREADDLLIBS) $(UNWINDLIBS) $(ATOMIC_OPS_LIBS) +libgc_la_DEPENDENCIES = @addobjs@ +libgc_la_LDFLAGS = $(extra_ldflags_libgc) -version-info $(LIBGC_VER_INFO) \ + -no-undefined + +EXTRA_libgc_la_SOURCES = ia64_save_regs_in_stack.s sparc_mach_dep.S \ + sparc_netbsd_mach_dep.s sparc_sunos4_mach_dep.s + + +# C++ Interface +# ------------- + +if CPLUSPLUS +lib_LTLIBRARIES += libgccpp.la +pkginclude_HEADERS += include/gc_cpp.h +include_HEADERS += include/extra/gc_cpp.h +libgccpp_la_SOURCES = gc_cpp.cc +libgccpp_la_LIBADD = ./libgc.la +libgccpp_la_LDFLAGS = -version-info $(LIBGCCPP_VER_INFO) -no-undefined +endif + +# FIXME: If Visual C++ users use Makefile.am, this should go into +# pkginclude_HEADERS with proper AM_CONDITIONALization. Otherwise +# delete this comment. +EXTRA_DIST += gc_cpp.cpp + + +# Misc +# ---- + +AM_CXXFLAGS = @GC_CFLAGS@ +AM_CFLAGS = $(WERROR_CFLAGS) @GC_CFLAGS@ + +CFLAGS += $(CFLAGS_EXTRA) +CXXFLAGS += $(CFLAGS_EXTRA) + +## FIXME: relies on internal code generated by automake. +## FIXME: ./configure --enable-dependency-tracking should be used +#all_objs = @addobjs@ $(libgc_la_OBJECTS) +#$(all_objs) : include/private/gcconfig.h include/private/gc_priv.h \ +#include/private/gc_hdrs.h include/gc.h include/gc_gcj.h \ +#include/gc_pthread_redirects.h include/gc_config_macros.h \ +#include/private/thread_local_alloc.h include/private_support.h \ +#include/private/pthread_stop_world.h \ +#include/gc_mark.h @addincludes@ + +## FIXME: we shouldn't have to do this, but automake forces us to. +## We use -Wp,-P to strip #line directives. Irix `as' chokes on +## these. +if ASM_WITH_CPP_UNSUPPORTED + ASM_CPP_OPTIONS = +else + ASM_CPP_OPTIONS = -Wp,-P -x assembler-with-cpp +endif + +.s.lo: + $(LTCOMPILE) $(ASM_CPP_OPTIONS) -c $< + +.S.lo: + $(LTCOMPILE) $(ASM_CPP_OPTIONS) -c $< + +## We need to add DEFS to assembler flags +## :FIXME: what if assembler does not accept -D... ? +## (use Autoconf to prepare ASDEFS?) + +CCASFLAGS += $(DEFS) + +# headers which are not installed +# (see include/include.am for more) +# + +# documentation which is not installed +# +EXTRA_DIST += README.QUICK + +# other makefiles +# :GOTCHA: deliberately we do not include 'Makefile' +EXTRA_DIST += BCC_MAKEFILE NT_MAKEFILE \ + OS2_MAKEFILE PCR-Makefile digimars.mak EMX_MAKEFILE \ + Makefile.direct SMakefile.amiga WCC_MAKEFILE autogen.sh \ + NT_STATIC_THREADS_MAKEFILE NT_X64_STATIC_THREADS_MAKEFILE \ + NT_X64_THREADS_MAKEFILE CMakeLists.txt tests/CMakeLists.txt + +# files used by makefiles other than Makefile.am +# +EXTRA_DIST += tools/add_gc_prefix.c tools/gcname.c tools/if_mach.c \ + tools/if_not_there.c tools/setjmp_t.c tools/threadlibs.c \ + gc.mak extra/MacOS.c extra/AmigaOS.c \ + extra/symbian/global_end.cpp extra/symbian/global_start.cpp \ + extra/symbian/init_global_static_roots.cpp extra/symbian.cpp \ + build/s60v3/bld.inf build/s60v3/libgc.mmp \ + extra/Mac_files/datastart.c extra/Mac_files/dataend.c \ + extra/Mac_files/MacOS_config.h \ + include/private/msvc_dbg.h extra/msvc_dbg.c tools/callprocs.sh + +# +# :GOTCHA: GNU make rule for making .s out of .S is flawed, +# it will not remove dest if building fails +.S.s: + if $(CPP) $< >$@ ; then :; else rm -f $@; fi + +include include/include.am +include cord/cord.am +include tests/tests.am +include doc/doc.am +# Putting these at the top causes cord to be built first, and not find libgc.a +# on HP/UX. There may be a better fix. diff --git a/Makefile.direct b/Makefile.direct new file mode 100644 index 0000000..c8bbf81 --- /dev/null +++ b/Makefile.direct @@ -0,0 +1,480 @@ +# This is the original manually generated Makefile. It may still be used +# to build the collector. +# +# Primary targets: +# gc.a - builds basic library +# c++ - adds C++ interface to library +# cords - adds cords (heavyweight strings) to library +# check - prints porting information, then builds basic version of gc.a, +# and runs some tests of collector and cords. Does not add cords or +# c++ interface to gc.a +# check-cpp - runs C++ test without adding C++ (and cords) interface to gc.a +# cord/de - builds dumb editor based on cords. + +ABI_FLAG= +# ABI_FLAG should be the cc flag that specifies the ABI. On most +# platforms this will be the empty string. Possible values: +# +DD64 for 64-bit executable on HP/UX. +# -n32, -n64, -o32 for SGI/MIPS ABIs. + +AS_ABI_FLAG=$(ABI_FLAG) +# ABI flag for assembler. On HP/UX this is +A64 for 64 bit +# executables. + +CC=cc $(ABI_FLAG) + +CXX=g++ $(ABI_FLAG) +# Needed only for "make c++", which adds the c++ interface. + +AS=as $(AS_ABI_FLAG) +# The above doesn't work with gas, which doesn't run cpp. +# Define AS as `gcc -c -x assembler-with-cpp' instead. +# Under Irix 6, you have to specify the ABI (-o32, -n32, or -64) +# if you use something other than the default ABI on your machine. + +LD=ld + +# Redefining srcdir allows object code for the nonPCR version of the collector +# to be generated in different directories. +srcdir= . +VPATH= $(srcdir) + +# Path to atomic_ops source. +AO_SRC_DIR=$(srcdir)/libatomic_ops + +CFLAGS_EXTRA= +CFLAGS= -O -I$(srcdir)/include -I$(AO_SRC_DIR)/src \ + -DGC_ATOMIC_UNCOLLECTABLE -DNO_EXECUTE_PERMISSION -DALL_INTERIOR_POINTERS \ + $(CFLAGS_EXTRA) + +# To build the collector with threads support, add to the above: +# -DGC_THREADS -DPARALLEL_MARK -DTHREAD_LOCAL_ALLOC +# +# To build the thread-capable preload library that intercepts +# malloc, add -DGC_USE_DLOPEN_WRAP -DREDIRECT_MALLOC=GC_malloc -fpic +# +# To build the parallel collector in a static library on HP/UX, +# add to the above: +# -DGC_HPUX_THREADS -DTHREAD_LOCAL_ALLOC -D_POSIX_C_SOURCE=199506L -mt +# FIXME: PARALLEL_MARK currently broken on HP/UX. +# +# To build the thread-safe collector on Tru64, add to the above: +# -pthread -DGC_OSF1_THREADS + +# HOSTCC and HOSTCFLAGS are used to build executables that will be run as +# part of the build process, i.e. on the build machine. These will usually +# be the same as CC and CFLAGS, except in a cross-compilation environment. +# Note that HOSTCFLAGS should include any -D flags that affect thread support. +HOSTCC=$(CC) +HOSTCFLAGS=$(CFLAGS) + +# For dynamic library builds, it may be necessary to add flags to generate +# PIC code, e.g. -fPIC on Linux. + +# Setjmp_test may yield overly optimistic results when compiled +# without optimization. + +# Look into doc/README.macros for the description of the "define arguments" +# influencing the collector configuration. + +CXXFLAGS= $(CFLAGS) +AR= ar +RANLIB= ranlib + + +OBJS= alloc.o reclaim.o allchblk.o misc.o mach_dep.o os_dep.o mark_rts.o \ + headers.o mark.o obj_map.o blacklst.o finalize.o new_hblk.o dbg_mlc.o \ + malloc.o stubborn.o checksums.o pthread_support.o pthread_stop_world.o \ + darwin_stop_world.o typd_mlc.o ptr_chck.o mallocx.o gcj_mlc.o specific.o \ + gc_dlopen.o backgraph.o win32_threads.o pthread_start.o \ + thread_local_alloc.o fnlz_mlc.o atomic_ops.o atomic_ops_sysdeps.o + +CSRCS= reclaim.c allchblk.c misc.c alloc.c mach_dep.c os_dep.c mark_rts.c \ + headers.c mark.c obj_map.c pcr_interface.c blacklst.c finalize.c \ + new_hblk.c real_malloc.c dyn_load.c dbg_mlc.c malloc.c stubborn.c \ + checksums.c pthread_support.c pthread_stop_world.c darwin_stop_world.c \ + typd_mlc.c ptr_chck.c mallocx.c gcj_mlc.c specific.c gc_dlopen.c \ + backgraph.c win32_threads.c pthread_start.c thread_local_alloc.c fnlz_mlc.c + +CORD_SRCS= cord/cordbscs.c cord/cordxtra.c cord/cordprnt.c cord/tests/de.c \ + cord/tests/cordtest.c include/cord.h include/ec.h \ + include/cord_pos.h cord/tests/de_win.c cord/tests/de_win.h \ + cord/tests/de_cmds.h cord/tests/de_win.rc + +CORD_OBJS= cord/cordbscs.o cord/cordxtra.o cord/cordprnt.o + +SRCS= $(CSRCS) \ + include/gc.h include/gc_typed.h include/gc_tiny_fl.h \ + include/gc_version.h include/private/gc_hdrs.h include/private/gc_priv.h \ + include/private/gcconfig.h include/private/gc_pmark.h \ + include/gc_inline.h include/gc_mark.h include/gc_disclaim.h \ + tools/threadlibs.c \ + tools/if_mach.c tools/if_not_there.c gc_cpp.cc include/gc_cpp.h \ + tools/gcname.c include/weakpointer.h include/private/gc_locks.h \ + include/new_gc_alloc.h include/gc_allocator.h \ + include/javaxfc.h \ + include/gc_backptr.h include/gc_gcj.h include/private/dbg_mlc.h \ + include/private/specific.h include/leak_detector.h \ + include/gc_pthread_redirects.h \ + include/gc_config_macros.h include/private/pthread_support.h \ + include/private/pthread_stop_world.h include/private/darwin_semaphore.h \ + include/private/darwin_stop_world.h include/private/thread_local_alloc.h \ + ia64_save_regs_in_stack.s sparc_mach_dep.S \ + sparc_netbsd_mach_dep.s sparc_sunos4_mach_dep.s $(CORD_SRCS) + +DOC_FILES= doc/README.Mac doc/README.OS2 \ + doc/README.amiga doc/README.cords doc/debugging.html \ + doc/finalization.html doc/porting.html doc/overview.html \ + doc/README.hp doc/README.linux doc/README.rs6000 \ + doc/README.sgi doc/README.solaris2 doc/README.uts \ + doc/README.symbian doc/README.win32 README.md AUTHORS doc/gc.man \ + doc/README.environment doc/tree.html doc/gcdescr.html \ + doc/README.autoconf doc/README.macros doc/README.ews4800 \ + doc/README.DGUX386 doc/README.arm.cross doc/leak.html \ + doc/scale.html doc/gcinterface.html doc/README.darwin \ + doc/simple_example.html doc/README.win64 + +TESTS= tests/test.c tests/test_cpp.cc tests/trace_test.c \ + tests/leak_test.c tests/thread_leak_test.c tests/middle.c \ + tests/smash_test.c tests/huge_test.c + +GNU_BUILD_FILES= configure.ac Makefile.am configure install-sh Makefile.in \ + aclocal.m4 config.sub config.guess \ + include/include.am doc/doc.am \ + ltmain.sh mkinstalldirs depcomp missing \ + cord/cord.am tests/tests.am autogen.sh \ + bdw-gc.pc.in compile + +OTHER_MAKEFILES= OS2_MAKEFILE NT_MAKEFILE gc.mak \ + BCC_MAKEFILE EMX_MAKEFILE WCC_MAKEFILE PCR-Makefile SMakefile.amiga \ + digimars.mak Makefile.direct NT_STATIC_THREADS_MAKEFILE \ + NT_X64_STATIC_THREADS_MAKEFILE NT_X64_THREADS_MAKEFILE + +OTHER_FILES= README.QUICK tools/setjmp_t.c tools/callprocs.sh \ + extra/MacOS.c extra/Mac_files/datastart.c extra/Mac_files/dataend.c \ + extra/Mac_files/MacOS_config.h tools/add_gc_prefix.c gc_cpp.cpp \ + extra/symbian/global_end.cpp extra/symbian/global_start.cpp \ + extra/symbian/init_global_static_roots.cpp extra/symbian.cpp \ + build/s60v3/bld.inf build/s60v3/libgc.mmp \ + extra/AmigaOS.c extra/msvc_dbg.c include/private/msvc_dbg.h \ + $(TESTS) $(GNU_BUILD_FILES) $(OTHER_MAKEFILES) + +CORD_INCLUDE_FILES= $(srcdir)/include/gc.h $(srcdir)/include/cord.h \ + $(srcdir)/include/ec.h $(srcdir)/include/cord_pos.h + +UTILS= if_mach if_not_there threadlibs + +# Libraries needed for curses applications. Only needed for de. +# It might also require -ltermlib on some targets. +CURSES= -lcurses + +# The following is irrelevant on most systems. But a few +# versions of make otherwise fork the shell specified in +# the SHELL environment variable. +SHELL= /bin/sh + +SPECIALCFLAGS= -I$(srcdir)/include -I$(AO_SRC_DIR)/src +# Alternative flags to the C compiler for mach_dep.c. +# Mach_dep.c often doesn't like optimization, and it's +# not time-critical anyway. +# Set SPECIALCFLAGS to -q nodirect_code on Encore. + +all: base_lib gctest + +atomic_ops.o: $(AO_SRC_DIR)/src/atomic_ops.c + $(CC) $(CFLAGS) -c -o $@ $(AO_SRC_DIR)/src/atomic_ops.c +# For some reason, Solaris make does not handle "$<" properly. + +atomic_ops_sysdeps.o: $(AO_SRC_DIR)/src/atomic_ops_sysdeps.S + $(CC) $(CFLAGS) -c -o $@ $(AO_SRC_DIR)/src/atomic_ops_sysdeps.S + +LEAKFLAGS= $(CFLAGS) -DFIND_LEAK + +BSD-pkg-all: bsd-libgc.a bsd-libleak.a + +bsd-libgc.a: + $(MAKE) -f Makefile.direct CFLAGS="$(CFLAGS)" clean c++-t + mv gc.a bsd-libgc.a + +bsd-libleak.a: + $(MAKE) -f Makefile.direct CFLAGS="$(LEAKFLAGS)" clean c++-nt + mv gc.a bsd-libleak.a + +BSD-pkg-install: BSD-pkg-all + ${CP} bsd-libgc.a libgc.a + ${INSTALL_DATA} libgc.a ${PREFIX}/lib + ${INSTALL_DATA} gc.h gc_cpp.h ${PREFIX}/include + ${INSTALL_MAN} doc/gc.man ${PREFIX}/man/man3/gc.3 + +pcr: PCR-Makefile include/private/gc_private.h include/private/gc_hdrs.h \ +include/private/gc_locks.h include/gc.h include/private/gcconfig.h \ +mach_dep.o $(SRCS) + $(MAKE) -f PCR-Makefile depend + $(MAKE) -f PCR-Makefile + +$(OBJS) tests/test.o dyn_load.o dyn_load_sunos53.o: \ + $(srcdir)/include/private/gc_priv.h \ + $(srcdir)/include/private/gc_hdrs.h $(srcdir)/include/private/gc_locks.h \ + $(srcdir)/include/gc.h $(srcdir)/include/gc_pthread_redirects.h \ + $(srcdir)/include/private/gcconfig.h $(srcdir)/include/gc_typed.h \ + $(srcdir)/include/gc_config_macros.h + +mark.o typd_mlc.o finalize.o ptr_chck.o: $(srcdir)/include/gc_mark.h \ + $(srcdir)/include/private/gc_pmark.h + +specific.o pthread_support.o thread_local_alloc.o win32_threads.o: \ + $(srcdir)/include/private/specific.h $(srcdir)/include/gc_inline.h \ + $(srcdir)/include/private/thread_local_alloc.h + +dbg_mlc.o gcj_mlc.o: $(srcdir)/include/private/dbg_mlc.h + +tests/test.o: tests $(srcdir)/tests/test.c + $(CC) $(CFLAGS) -c $(srcdir)/tests/test.c + mv test.o tests/test.o + +tests: + mkdir tests + +base_lib gc.a: $(OBJS) dyn_load.o $(UTILS) + rm -f dont_ar_1 + ./if_mach SPARC SOLARIS touch dont_ar_1 + ./if_mach SPARC SOLARIS $(AR) rus gc.a $(OBJS) dyn_load.o + ./if_mach M68K AMIGA touch dont_ar_1 + ./if_mach M68K AMIGA $(AR) -vrus gc.a $(OBJS) dyn_load.o + ./if_not_there dont_ar_1 $(AR) ru gc.a $(OBJS) dyn_load.o + ./if_not_there dont_ar_1 $(RANLIB) gc.a || cat /dev/null + echo > base_lib +# Ignore ranlib failure; that usually means it doesn't exist, and +# isn't needed. + +cords: $(CORD_OBJS) cord/cordtest $(UTILS) base_lib + rm -f dont_ar_3 + ./if_mach SPARC SOLARIS touch dont_ar_3 + ./if_mach SPARC SOLARIS $(AR) rus gc.a $(CORD_OBJS) + ./if_mach M68K AMIGA touch dont_ar_3 + ./if_mach M68K AMIGA $(AR) -vrus gc.a $(CORD_OBJS) + ./if_not_there dont_ar_3 $(AR) ru gc.a $(CORD_OBJS) + ./if_not_there dont_ar_3 $(RANLIB) gc.a || cat /dev/null + echo > cords + +gc_cpp.o: $(srcdir)/gc_cpp.cc $(srcdir)/include/gc_cpp.h $(srcdir)/include/gc.h + $(CXX) -c $(CXXFLAGS) $(srcdir)/gc_cpp.cc + +test_cpp: $(srcdir)/tests/test_cpp.cc $(srcdir)/include/gc_cpp.h $(srcdir)/include/gc.h \ + gc_cpp.o base_lib $(UTILS) + rm -f test_cpp + ./if_mach HP_PA HPUX $(CXX) $(CXXFLAGS) -o test_cpp $(srcdir)/tests/test_cpp.cc gc_cpp.o gc.a -ldld `./threadlibs` + ./if_not_there test_cpp $(CXX) $(CXXFLAGS) -o test_cpp $(srcdir)/tests/test_cpp.cc gc_cpp.o gc.a `./threadlibs` + +check-cpp: test_cpp + ./test_cpp + +c++-t: c++ test_cpp + ./test_cpp 1 + +c++-nt: c++ + @echo "Use ./test_cpp 1 to test the leak library" + +c++: gc_cpp.o $(srcdir)/include/gc_cpp.h base_lib + rm -f dont_ar_4 + ./if_mach SPARC SOLARIS touch dont_ar_4 + ./if_mach SPARC SOLARIS $(AR) rus gc.a gc_cpp.o + ./if_mach M68K AMIGA touch dont_ar_4 + ./if_mach M68K AMIGA $(AR) -vrus gc.a gc_cpp.o + ./if_not_there dont_ar_4 $(AR) ru gc.a gc_cpp.o + ./if_not_there dont_ar_4 $(RANLIB) gc.a || cat /dev/null + echo > c++ + +dyn_load_sunos53.o: dyn_load.c + $(CC) $(CFLAGS) -DSUNOS53_SHARED_LIB -c $(srcdir)/dyn_load.c -o $@ + +# SunOS5 shared library version of the collector +sunos5gc.so: $(OBJS) dyn_load_sunos53.o + $(CC) -G -o sunos5gc.so $(OBJS) dyn_load_sunos53.o -ldl + ln sunos5gc.so libgc.so + +# Alpha/OSF shared library version of the collector +libalphagc.so: $(OBJS) + $(LD) -shared -o libalphagc.so $(OBJS) dyn_load.o -lc + ln libalphagc.so libgc.so + +# IRIX shared library version of the collector +libirixgc.so: $(OBJS) dyn_load.o + $(LD) -shared $(ABI_FLAG) -o libirixgc.so $(OBJS) dyn_load.o -lc + ln libirixgc.so libgc.so + +# Linux shared library version of the collector +liblinuxgc.so: $(OBJS) dyn_load.o + gcc -shared -o liblinuxgc.so $(OBJS) dyn_load.o + ln liblinuxgc.so libgc.so + +# Build gctest with dynamic library +dyn_test: + $(CC) $(CFLAGS) -o gctest tests/test.c libgc.so `./threadlibs` + ./gctest + +# Alternative Linux rule. This is preferable, but is likely to break the +# Makefile for some non-linux platforms. +# LIBOBJS= $(patsubst %.o, %.lo, $(OBJS)) +# +#.SUFFIXES: .lo $(SUFFIXES) +# +#.c.lo: +# $(CC) $(CFLAGS) $(CPPFLAGS) -fPIC -c $< -o $@ +# +# liblinuxgc.so: $(LIBOBJS) dyn_load.lo +# gcc -shared -Wl,-soname=libgc.so.0 -o libgc.so.0 $(LIBOBJS) dyn_load.lo +# touch liblinuxgc.so + +mach_dep.o: $(srcdir)/mach_dep.c $(srcdir)/sparc_mach_dep.S \ + $(srcdir)/sparc_sunos4_mach_dep.s \ + $(srcdir)/ia64_save_regs_in_stack.s \ + $(srcdir)/sparc_netbsd_mach_dep.s $(UTILS) + rm -f mach_dep.o + ./if_mach SPARC SOLARIS $(CC) -c -o mach_dep2.o $(srcdir)/sparc_mach_dep.S + ./if_mach SPARC OPENBSD $(AS) -o mach_dep2.o $(srcdir)/sparc_sunos4_mach_dep.s + ./if_mach SPARC NETBSD $(AS) -o mach_dep2.o $(srcdir)/sparc_netbsd_mach_dep.s + ./if_mach SPARC "" $(CC) -c -o mach_dep1.o $(SPECIALCFLAGS) $(srcdir)/mach_dep.c + ./if_mach SPARC "" $(LD) -r -o mach_dep.o mach_dep1.o mach_dep2.o + ./if_mach IA64 "" $(AS) -o ia64_save_regs_in_stack.o $(srcdir)/ia64_save_regs_in_stack.s + ./if_mach IA64 "" $(CC) -c -o mach_dep1.o $(SPECIALCFLAGS) $(srcdir)/mach_dep.c + ./if_mach IA64 "" $(LD) -r -o mach_dep.o mach_dep1.o ia64_save_regs_in_stack.o + -./if_not_there mach_dep.o $(CC) -c $(SPECIALCFLAGS) $(srcdir)/mach_dep.c + -./if_not_there mach_dep.o `cygpath -w /bin/sh` $(CC) -c $(SPECIALCFLAGS) $(srcdir)/mach_dep.c + -./if_not_there mach_dep.o /bin/sh $(CC) -c $(SPECIALCFLAGS) $(srcdir)/mach_dep.c + +mark_rts.o: $(srcdir)/mark_rts.c $(UTILS) + rm -f mark_rts.o + -./if_mach ALPHA OSF1 $(CC) -c $(CFLAGS) -Wo,-notail $(srcdir)/mark_rts.c + -./if_not_there mark_rts.o $(CC) -c $(CFLAGS) $(srcdir)/mark_rts.c + -./if_not_there mark_rts.o `cygpath -w /bin/sh` $(CC) -c $(CFLAGS) $(srcdir)/mark_rts.c + -./if_not_there mark_rts.o /bin/sh $(CC) -c $(CFLAGS) $(srcdir)/mark_rts.c +# Work-around for DEC optimizer tail recursion elimination bug. +# The ALPHA-specific line should be removed if gcc is used. + +alloc.o: include/gc_version.h + +cord: + mkdir cord + +cord/cordbscs.o: cord $(srcdir)/cord/cordbscs.c $(CORD_INCLUDE_FILES) + $(CC) $(CFLAGS) -c -I$(srcdir) $(srcdir)/cord/cordbscs.c + mv cordbscs.o cord/cordbscs.o +# not all compilers understand -o filename + +cord/cordxtra.o: cord $(srcdir)/cord/cordxtra.c $(CORD_INCLUDE_FILES) + $(CC) $(CFLAGS) -c -I$(srcdir) $(srcdir)/cord/cordxtra.c + mv cordxtra.o cord/cordxtra.o + +cord/cordprnt.o: cord $(srcdir)/cord/cordprnt.c $(CORD_INCLUDE_FILES) + $(CC) $(CFLAGS) -c -I$(srcdir) $(srcdir)/cord/cordprnt.c + mv cordprnt.o cord/cordprnt.o + +cord/cordtest: $(srcdir)/cord/tests/cordtest.c $(CORD_OBJS) base_lib $(UTILS) + rm -f cord/cordtest + ./if_mach SPARC DRSNX $(CC) $(CFLAGS) -o cord/cordtest $(srcdir)/cord/tests/cordtest.c $(CORD_OBJS) gc.a -lucb + ./if_mach HP_PA HPUX $(CC) $(CFLAGS) -o cord/cordtest $(srcdir)/cord/tests/cordtest.c $(CORD_OBJS) gc.a -ldld `./threadlibs` + ./if_mach M68K AMIGA $(CC) $(CFLAGS) -UGC_AMIGA_MAKINGLIB -o cord/cordtest 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use the internal version. This is done since libatomic_ops doesn't +# use libtool, since it has no real use for it. But that seems to make +# it hard to use either the resulting object files or libraries. +# Thus there seems to be no real reason to recursively build in the +# libatomic_ops directory. +# if USE_INTERNAL_LIBATOMICS_OPS +# SUBDIRS = @maybe_libatomic_ops@ +# else +# SUBDIRS = +# endif +SUBDIRS = +ACLOCAL_AMFLAGS = -I m4 + +# Initialize variables so that we can declare files locally. + +# FIXME: If Visual C++ users use Makefile.am, this should go into +# pkginclude_HEADERS with proper AM_CONDITIONALization. Otherwise +# delete this comment. + +# headers which are not installed +# (see include/include.am for more) +# + +# documentation which is not installed +# + +# other makefiles +# :GOTCHA: deliberately we do not include 'Makefile' + +# files used by makefiles other than Makefile.am +# +EXTRA_DIST = $(am__append_3) gc_cpp.cpp README.QUICK BCC_MAKEFILE \ + NT_MAKEFILE OS2_MAKEFILE PCR-Makefile digimars.mak \ + EMX_MAKEFILE Makefile.direct SMakefile.amiga WCC_MAKEFILE \ + autogen.sh NT_STATIC_THREADS_MAKEFILE \ + NT_X64_STATIC_THREADS_MAKEFILE NT_X64_THREADS_MAKEFILE \ + CMakeLists.txt tests/CMakeLists.txt tools/add_gc_prefix.c \ + tools/gcname.c tools/if_mach.c tools/if_not_there.c \ + tools/setjmp_t.c tools/threadlibs.c gc.mak extra/MacOS.c \ + extra/AmigaOS.c extra/symbian/global_end.cpp \ + extra/symbian/global_start.cpp \ + extra/symbian/init_global_static_roots.cpp extra/symbian.cpp \ + build/s60v3/bld.inf build/s60v3/libgc.mmp \ + extra/Mac_files/datastart.c 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linuxthread semaphore functions get linked: +libgc_la_LIBADD = @addobjs@ $(THREADDLLIBS) $(UNWINDLIBS) $(ATOMIC_OPS_LIBS) +libgc_la_DEPENDENCIES = @addobjs@ +libgc_la_LDFLAGS = $(extra_ldflags_libgc) -version-info $(LIBGC_VER_INFO) \ + -no-undefined + +EXTRA_libgc_la_SOURCES = ia64_save_regs_in_stack.s sparc_mach_dep.S \ + sparc_netbsd_mach_dep.s sparc_sunos4_mach_dep.s + +@CPLUSPLUS_TRUE@libgccpp_la_SOURCES = gc_cpp.cc +@CPLUSPLUS_TRUE@libgccpp_la_LIBADD = ./libgc.la +@CPLUSPLUS_TRUE@libgccpp_la_LDFLAGS = -version-info $(LIBGCCPP_VER_INFO) -no-undefined + +# Misc +# ---- +AM_CXXFLAGS = @GC_CFLAGS@ +@ASM_WITH_CPP_UNSUPPORTED_FALSE@ASM_CPP_OPTIONS = -Wp,-P -x assembler-with-cpp + +#all_objs = @addobjs@ $(libgc_la_OBJECTS) +#$(all_objs) : include/private/gcconfig.h include/private/gc_priv.h \ +#include/private/gc_hdrs.h include/gc.h include/gc_gcj.h \ +#include/gc_pthread_redirects.h include/gc_config_macros.h \ +#include/private/thread_local_alloc.h include/private_support.h \ 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then :; else rm -f $@; fi + +# Putting these at the top causes cord to be built first, and not find libgc.a +# on HP/UX. There may be a better fix. + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/NT_MAKEFILE b/NT_MAKEFILE new file mode 100644 index 0000000..5c3e7b0 --- /dev/null +++ b/NT_MAKEFILE @@ -0,0 +1,61 @@ +# Makefile for Windows NT. Assumes Microsoft compiler, and a single thread. +# Use "nmake nodebug=1 all" for optimized versions of library, gctest and editor. + +MY_CPU=X86 +CPU=$(MY_CPU) +!include + +# Make sure that .cc is not viewed as a suffix. It is for VC++2005, but +# not earlier versions. We can deal with either, but not inconsistency. +.SUFFIXES: +.SUFFIXES: .obj .cpp .c + +OBJS= alloc.obj reclaim.obj allchblk.obj misc.obj mach_dep.obj os_dep.obj mark_rts.obj headers.obj mark.obj obj_map.obj blacklst.obj finalize.obj new_hblk.obj dbg_mlc.obj fnlz_mlc.obj malloc.obj stubborn.obj dyn_load.obj typd_mlc.obj ptr_chck.obj gc_cpp.obj mallocx.obj extra\msvc_dbg.obj + +all: gctest.exe cord\de.exe test_cpp.exe + +.c.obj: + $(cc) $(cdebug) $(cflags) $(cvars) -Iinclude -DALL_INTERIOR_POINTERS -DGC_NOT_DLL -D_CRT_SECURE_NO_DEPRECATE $*.c /Fo$*.obj + +.cpp.obj: + $(cc) $(cdebug) $(cflags) $(cvars) -Iinclude -DALL_INTERIOR_POINTERS -DGC_NOT_DLL -D_CRT_SECURE_NO_DEPRECATE $*.cpp /Fo$*.obj + +$(OBJS) tests\test.obj: include\private\gc_priv.h include\private\gc_hdrs.h include\gc.h include\private\gcconfig.h include\private\gc_locks.h include\private\gc_pmark.h include\gc_mark.h include\gc_disclaim.h include\private\msvc_dbg.h + +gc.lib: $(OBJS) + lib /MACHINE:i386 /out:gc.lib $(OBJS) +# The original NT SDK used lib32 instead of lib + +gctest.exe: tests\test.obj gc.lib +# The following works for win32 debugging. For win32s debugging use debugtype:coff +# and add mapsympe line. +# This produces a "GUI" application that opens no windows and writes to the log file +# "gctest.gc.log". This is done to make the result runnable under win32s. + $(link) -debug -debugtype:cv $(guiflags) -stack:131072 -out:$*.exe tests\test.obj $(guilibs) gc.lib +# mapsympe -n -o gctest.sym gctest.exe + +cord\de_win.rbj: cord\de_win.res + cvtres /MACHINE:$(MY_CPU) /OUT:cord\de_win.rbj cord\de_win.res + +cord\tests\de.obj cord\tests\de_win.obj: include\cord.h include\cord_pos.h cord\tests\de_win.h cord\tests\de_cmds.h + +cord\de_win.res: cord\tests\de_win.rc cord\tests\de_win.h cord\tests\de_cmds.h + $(rc) $(rcvars) -r -fo cord\de_win.res cord\tests\de_win.rc + +# Cord/de is a real win32 gui application. +cord\de.exe: cord\cordbscs.obj cord\cordxtra.obj cord\tests\de.obj cord\tests\de_win.obj cord\de_win.rbj gc.lib + $(link) -debug -debugtype:cv $(guiflags) -stack:16384 -out:cord\de.exe cord\cordbscs.obj cord\cordxtra.obj cord\tests\de.obj cord\tests\de_win.obj cord\de_win.rbj gc.lib $(guilibs) + +gc_cpp.obj: include\gc_cpp.h include\gc.h + +gc_cpp.cpp: gc_cpp.cc +# copy gc_cpp.cc gc_cpp.cpp + +test_cpp.cpp: tests\test_cpp.cc + copy tests\test_cpp.cc test_cpp.cpp + +# This generates the C++ test executable. The executable expects +# a single numeric argument, which is the number of iterations. +# The output appears in the file "test_cpp.gc.log". +test_cpp.exe: test_cpp.obj include\gc_cpp.h include\gc.h gc.lib + $(link) -debug -debugtype:cv $(guiflags) -stack:16384 -out:test_cpp.exe test_cpp.obj gc.lib $(guilibs) diff --git a/NT_STATIC_THREADS_MAKEFILE b/NT_STATIC_THREADS_MAKEFILE new file mode 100644 index 0000000..6919bad --- /dev/null +++ b/NT_STATIC_THREADS_MAKEFILE @@ -0,0 +1,71 @@ +# Makefile for Windows NT. Assumes Microsoft compiler. +# Use "nmake nodebug=1 all" for optimized versions of library, gctest and editor. + +MY_CPU=X86 +CPU=$(MY_CPU) +!include + +# Make sure that .cc is not viewed as a suffix. It is for VC++2005, but +# not earlier versions. We can deal with either, but not inconsistency. +.SUFFIXES: +.SUFFIXES: .obj .cpp .c + +# Atomic_ops installation directory. For win32, the source directory +# should do, since we only need the headers. +# We assume this was manually unpacked, since I'm not sure there is +# a Windows standard command line tool to do this. +AO_SRC_DIR=libatomic_ops/src +AO_INCLUDE_DIR=$(AO_SRC_DIR) + +OBJS= alloc.obj reclaim.obj allchblk.obj misc.obj mach_dep.obj os_dep.obj mark_rts.obj headers.obj mark.obj obj_map.obj blacklst.obj finalize.obj new_hblk.obj dbg_mlc.obj fnlz_mlc.obj malloc.obj stubborn.obj dyn_load.obj typd_mlc.obj ptr_chck.obj gc_cpp.obj mallocx.obj win32_threads.obj extra\msvc_dbg.obj thread_local_alloc.obj + +all: gctest.exe cord\de.exe test_cpp.exe + +.c.obj: + $(cc) $(cdebug) $(cflags) $(cvarsmt) -Iinclude -I$(AO_INCLUDE_DIR) -DALL_INTERIOR_POINTERS -DGC_NOT_DLL -DGC_THREADS -DTHREAD_LOCAL_ALLOC -DPARALLEL_MARK -D_CRT_SECURE_NO_DEPRECATE $*.c /Fo$*.obj + +.cpp.obj: + $(cc) $(cdebug) $(cflags) $(cvarsmt) -Iinclude -I$(AO_INCLUDE_DIR) -DALL_INTERIOR_POINTERS -DGC_NOT_DLL -DGC_THREADS -DTHREAD_LOCAL_ALLOC -D_CRT_SECURE_NO_DEPRECATE $*.cpp /Fo$*.obj + +$(OBJS) tests\test.obj: include\private\gc_priv.h include\private\gc_hdrs.h include\gc.h include\private\gcconfig.h include\private\gc_locks.h include\private\gc_pmark.h include\gc_mark.h include\gc_disclaim.h include\private\msvc_dbg.h + +gc.lib: $(OBJS) + lib /MACHINE:i386 /out:gc.lib $(OBJS) +# The original NT SDK used lib32 instead of lib + +gctest.exe: tests\test.obj gc.lib +# The following works for win32 debugging. For win32s debugging use debugtype:coff +# and add mapsympe line. +# This produces a "GUI" application that opens no windows and writes to the log file +# "gctest.gc.log". This is done to make the result runnable under win32s. + $(link) -debug -debugtype:cv $(guiflags) -stack:262144 -out:$*.exe tests\test.obj $(guilibs) gc.lib +# mapsympe -n -o gctest.sym gctest.exe + +cord\de_win.rbj: cord\de_win.res + cvtres /MACHINE:$(MY_CPU) /OUT:cord\de_win.rbj cord\de_win.res + +cord\tests\de.obj cord\tests\de_win.obj: include\cord.h include\cord_pos.h cord\tests\de_win.h cord\tests\de_cmds.h + +cord\de_win.res: cord\tests\de_win.rc cord\tests\de_win.h cord\tests\de_cmds.h + $(rc) $(rcvars) -r -fo cord\de_win.res cord\tests\de_win.rc + +# Cord/de is a real win32 gui application. +cord\de.exe: cord\cordbscs.obj cord\cordxtra.obj cord\tests\de.obj cord\tests\de_win.obj cord\de_win.rbj gc.lib + $(link) -debug -debugtype:cv $(guiflags) -stack:16384 -out:cord\de.exe cord\cordbscs.obj cord\cordxtra.obj cord\tests\de.obj cord\tests\de_win.obj cord\de_win.rbj gc.lib $(guilibs) + +gc_cpp.obj: include\gc_cpp.h include\gc.h + +gc_cpp.cpp: gc_cpp.cc +# copy gc_cpp.cc gc_cpp.cpp + +test_cpp.cpp: tests\test_cpp.cc + copy tests\test_cpp.cc test_cpp.cpp + +# This generates the C++ test executable. The executable expects +# a single numeric argument, which is the number of iterations. +# The output appears in the file "test_cpp.gc.log". +test_cpp.exe: test_cpp.obj include\gc_cpp.h include\gc.h gc.lib + $(link) -debug -debugtype:cv $(guiflags) -stack:16384 -out:test_cpp.exe test_cpp.obj gc.lib $(guilibs) + +$(AO_SRC_DIR): + tar xvfz $(AO_SRC_DIR).tar.gz; diff --git a/NT_X64_STATIC_THREADS_MAKEFILE b/NT_X64_STATIC_THREADS_MAKEFILE new file mode 100644 index 0000000..b60d09f --- /dev/null +++ b/NT_X64_STATIC_THREADS_MAKEFILE @@ -0,0 +1,70 @@ +# Makefile for Windows NT. Assumes Microsoft compiler. +# Use "nmake nodebug=1 all" for optimized versions of library, gctest and editor. + +MY_CPU=AMD64 +CPU=$(MY_CPU) +!include + +# Make sure that .cc is not viewed as a suffix. It is for VC++2005, but +# not earlier versions. We can deal with either, but not inconsistency. +.SUFFIXES: +.SUFFIXES: .obj .cpp .c + +# Atomic_ops installation directory. For win32, the source directory +# should do, since we only need the headers. +# We assume this was manually unpacked, since I'm not sure there is +# a Windows standard command line tool to do this. +AO_SRC_DIR=libatomic_ops/src +AO_INCLUDE_DIR=$(AO_SRC_DIR) + +OBJS= alloc.obj reclaim.obj allchblk.obj misc.obj mach_dep.obj os_dep.obj mark_rts.obj headers.obj mark.obj obj_map.obj blacklst.obj finalize.obj new_hblk.obj dbg_mlc.obj fnlz_mlc.obj malloc.obj stubborn.obj dyn_load.obj typd_mlc.obj ptr_chck.obj gc_cpp.obj mallocx.obj win32_threads.obj extra\msvc_dbg.obj thread_local_alloc.obj + +all: gctest.exe cord\de.exe test_cpp.exe + +.c.obj: + $(cc) $(cdebug) $(cflags) $(cvarsmt) -Iinclude -I$(AO_INCLUDE_DIR) -DALL_INTERIOR_POINTERS -DGC_NOT_DLL -DGC_THREADS -DTHREAD_LOCAL_ALLOC -D_CRT_SECURE_NO_DEPRECATE $*.c /Fo$*.obj /wd4100 /wd4127 /wd4701 +# Disable "may not be initialized" warnings. They're too approximate. +# Disable crt security warnings, since unfortunately they warn about all sorts +# of safe uses of strncpy. It would be nice to leave the rest enabled. + +.cpp.obj: + $(cc) $(cdebug) $(cflags) $(cvarsmt) -Iinclude -I$(AO_INCLUDE_DIR) -DALL_INTERIOR_POINTERS -DGC_NOT_DLL -DGC_THREADS -DTHREAD_LOCAL_ALLOC -D_CRT_SECURE_NO_DEPRECATE $*.cpp /Fo$*.obj + +$(OBJS) tests\test.obj: include\private\gc_priv.h include\private\gc_hdrs.h include\gc.h include\private\gcconfig.h include\private\gc_locks.h include\private\gc_pmark.h include\gc_mark.h include\gc_disclaim.h include\private\msvc_dbg.h + +gc.lib: $(OBJS) + lib /MACHINE:X64 /out:gc.lib $(OBJS) + +gctest.exe: tests\test.obj gc.lib +# This produces a "GUI" application that opens no windows and writes to +# the log file "gctest.gc.log". + $(link) $(ldebug) $(guiflags) -out:$*.exe tests\test.obj $(guilibs) gc.lib + +cord\de_win.rbj: cord\de_win.res + cvtres /MACHINE:$(MY_CPU) /OUT:cord\de_win.rbj cord\de_win.res + +cord\tests\de.obj cord\tests\de_win.obj: include\cord.h include\cord_pos.h cord\tests\de_win.h cord\tests\de_cmds.h + +cord\de_win.res: cord\tests\de_win.rc cord\tests\de_win.h cord\tests\de_cmds.h + $(rc) $(rcvars) -r -fo cord\de_win.res cord\tests\de_win.rc + +# Cord/de is a real win32 gui application. +cord\de.exe: cord\cordbscs.obj cord\cordxtra.obj cord\tests\de.obj cord\tests\de_win.obj cord\de_win.rbj gc.lib + $(link) $(ldebug) $(guiflags) -stack:16384 -out:cord\de.exe cord\cordbscs.obj cord\cordxtra.obj cord\tests\de.obj cord\tests\de_win.obj cord\de_win.rbj gc.lib $(guilibs) + +gc_cpp.obj: include\gc_cpp.h include\gc.h + +gc_cpp.cpp: gc_cpp.cc +# copy gc_cpp.cc gc_cpp.cpp + +test_cpp.cpp: tests\test_cpp.cc + copy tests\test_cpp.cc test_cpp.cpp + +# This generates the C++ test executable. The executable expects +# a single numeric argument, which is the number of iterations. +# The output appears in the file "test_cpp.gc.log". +test_cpp.exe: test_cpp.obj include\gc_cpp.h include\gc.h gc.lib + $(link) $(ldebug) $(guiflags) -stack:16384 -out:test_cpp.exe test_cpp.obj gc.lib $(guilibs) + +$(AO_SRC_DIR): + tar xvfz $(AO_SRC_DIR).tar.gz; diff --git a/NT_X64_THREADS_MAKEFILE b/NT_X64_THREADS_MAKEFILE new file mode 100644 index 0000000..d90008c --- /dev/null +++ b/NT_X64_THREADS_MAKEFILE @@ -0,0 +1,87 @@ +# Makefile for Windows NT. Assumes Microsoft compiler. +# modified 2007 August by Friedrich Dominicus: +# - copied from NT_X64_STATIC_THREADS_MAKEFILES +# - checked agaist gc.mak (NT_THREADS_MAKEFILE) +# - added changes to integrate the tools +# - currently just with debug information +# problems can be sent to +# frido at q-software-solutions.de +# +# or the mailing list + + +MY_CPU=AMD64 +CPU=$(MY_CPU) +!include + +# Make sure that .cc is not viewed as a suffix. It is for VC++2005, but # not earlier versions. We can deal with either, but not inconsistency. +.SUFFIXES: +.SUFFIXES: .obj .cpp .c + +# Atomic_ops installation directory. For win32, the source directory +# should do, since we only need the headers. +# We assume this was manually unpacked, since I'm not sure there is +# a Windows standard command line tool to do this. +AO_SRC_DIR=libatomic_ops/src +AO_INCLUDE_DIR=$(AO_SRC_DIR) + +OBJS= alloc.obj reclaim.obj allchblk.obj misc.obj mach_dep.obj os_dep.obj mark_rts.obj headers.obj mark.obj obj_map.obj blacklst.obj finalize.obj new_hblk.obj dbg_mlc.obj fnlz_mlc.obj malloc.obj stubborn.obj dyn_load.obj typd_mlc.obj ptr_chck.obj gc_cpp.obj mallocx.obj win32_threads.obj extra\msvc_dbg.obj thread_local_alloc.obj + +all: gc64.dll gctest.exe cord\de.exe test_cpp.exe + +.c.obj: + $(cc) $(cdebug) $(cflags) $(cvarsmt) -Iinclude -I$(AO_INCLUDE_DIR) -DALL_INTERIOR_POINTERS -DGC_DLL -DGC_THREADS -DCORD_NOT_DLL -D_CRT_SECURE_NO_DEPRECATE $*.c /Fo$*.obj /wd4100 /wd4127 /wd4701 +# Disable "may not be initialized" warnings. They're too approximate. +# Disable crt security warnings, since unfortunately they warn about all sorts # of safe uses of strncpy. It would be nice to leave the rest enabled. + +.cpp.obj: + $(cc) $(cdebug) $(cflags) $(cvarsmt) -Iinclude -I$(AO_INCLUDE_DIR) -DALL_INTERIOR_POINTERS -DGC_DLL -DGC_THREADS -D_CRT_SECURE_NO_DEPRECATE $*.cpp /Fo$*.obj + +$(OBJS) tests\test.obj: include\private\gc_priv.h include\private\gc_hdrs.h include\gc.h include\private\gcconfig.h include\private\gc_locks.h include\private\gc_pmark.h include\gc_mark.h include\gc_disclaim.h include\private\msvc_dbg.h + + +LINK64=link.exe +LINK64_FLAGS=kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib \ +shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo \ +/subsystem:windows /dll /incremental:no /pdb:"gc.pdb" /machine:X64 /out:"gc64.dll" \ +/implib:"gc64_dll.lib" + +gc64.dll : $(OBJS) + $(LINK64) $(ldebug) $(LINK64_FLAGS) $(OBJS) + + +gctest.exe: tests\test.obj gc64_dll.lib +# This produces a "GUI" application that opens no windows and writes to +# the log file "gctest.gc.log". + $(link) $(ldebug) $(guiflags) -out:$*.exe tests\test.obj $(guilibs) gc64_dll.lib + +cord\de_win.rbj: cord\de_win.res + cvtres /MACHINE:$(MY_CPU) /OUT:cord\de_win.rbj cord\de_win.res + +cord\tests\de.obj cord\tests\de_win.obj: include\cord.h include\cord_pos.h cord\tests\de_win.h cord\tests\de_cmds.h + +cord\de_win.res: cord\tests\de_win.rc cord\tests\de_win.h cord\tests\de_cmds.h + $(rc) $(rcvars) -r -fo cord\de_win.res cord\tests\de_win.rc + +# Cord/de is a real win32 gui application. +cord\de.exe: cord\cordbscs.obj cord\cordxtra.obj cord\tests\de.obj cord\tests\de_win.obj cord\de_win.rbj gc64_dll.lib + $(link) $(ldebug) $(guiflags) -stack:16384 -out:cord\de.exe cord\cordbscs.obj cord\cordxtra.obj cord\tests\de.obj cord\tests\de_win.obj cord\de_win.rbj gc64_dll.lib $(guilibs) + +gc_cpp.obj: include\gc_cpp.h include\gc.h + +gc_cpp.cpp: gc_cpp.cc +# copy gc_cpp.cc gc_cpp.cpp + +test_cpp.cpp: tests\test_cpp.cc + copy tests\test_cpp.cc test_cpp.cpp + +# This generates the C++ test executable. The executable expects # a single numeric argument, which is the number of iterations. +# The output appears in the file "test_cpp.gc.log". +test_cpp.exe: test_cpp.obj include\gc_cpp.h include\gc.h gc64_dll.lib + $(link) $(ldebug) $(guiflags) -stack:16384 -out:test_cpp.exe test_cpp.obj gc64_dll.lib $(guilibs) + +$(AO_SRC_DIR): + tar xvfz $(AO_SRC_DIR).tar.gz; + +clean: + del *.exe *.log *.obj *.pdb cord\*.exe cord\*.exp cord\*.lib cord\*.obj cord\*.pdb cord\*.rbj cord\*.res cord\tests\*.obj extra\*.obj gc*.lib gc*.dll gc*.exp test_cpp.cpp tests\*.obj 2> nul diff --git a/OS2_MAKEFILE b/OS2_MAKEFILE new file mode 100644 index 0000000..acfcd56 --- /dev/null +++ b/OS2_MAKEFILE @@ -0,0 +1,45 @@ +# Makefile for OS/2. Assumes IBM's compiler, static linking, and a single thread. +# Adding dynamic linking support seems easy, but takes a little bit of work. +# Adding thread support may be nontrivial, since we haven't yet figured out how to +# look at another thread's registers. + +# Significantly revised for GC version 4.4 by Mark Boulter (Jan 1994). + +OBJS= alloc.obj reclaim.obj allchblk.obj misc.obj mach_dep.obj os_dep.obj mark_rts.obj headers.obj mark.obj obj_map.obj blacklst.obj finalize.obj new_hblk.obj dbg_mlc.obj fnlz_mlc.obj malloc.obj stubborn.obj typd_mlc.obj ptr_chck.obj mallocx.obj + +CORDOBJS= cord\cordbscs.obj cord\cordxtra.obj cord\cordprnt.obj + +CC= icc +CFLAGS= /O /Q /DSMALL_CONFIG /DALL_INTERIOR_POINTERS +# Use /Ti instead of /O for debugging +# Setjmp_test may yield overly optimistic results when compiled +# without optimization. + +all: $(OBJS) gctest.exe cord\cordtest.exe + +$(OBJS) test.obj: include\private\gc_priv.h include\private\gc_hdrs.h include\gc.h include\private\gcconfig.h + +## ERASE THE LIB FIRST - if it is already there then this command will fail +## (make sure its there or erase will fail!) +gc.lib: $(OBJS) + echo . > gc.lib + erase gc.lib + LIB gc.lib $(OBJS), gc.lst + +mach_dep.obj: mach_dep.c + $(CC) $(CFLAGS) /C mach_dep.c + +gctest.exe: test.obj gc.lib + $(CC) $(CFLAGS) /B"/STACK:524288" /Fegctest test.obj gc.lib + +cord\cordbscs.obj: cord\cordbscs.c include\cord.h include\cord_pos.h + $(CC) $(CFLAGS) /C /Focord\cordbscs cord\cordbscs.c + +cord\cordxtra.obj: cord\cordxtra.c include\cord.h include\cord_pos.h include\ec.h + $(CC) $(CFLAGS) /C /Focord\cordxtra cord\cordxtra.c + +cord\cordprnt.obj: cord\cordprnt.c include\cord.h include\cord_pos.h include\ec.h + $(CC) $(CFLAGS) /C /Focord\cordprnt cord\cordprnt.c + +cord\cordtest.exe: cord\tests\cordtest.c include\cord.h include\cord_pos.h include\ec.h $(CORDOBJS) gc.lib + $(CC) $(CFLAGS) /B"/STACK:65536" /Fecord\cordtest cord\tests\cordtest.c gc.lib $(CORDOBJS) diff --git a/PCR-Makefile b/PCR-Makefile new file mode 100644 index 0000000..32f6321 --- /dev/null +++ b/PCR-Makefile @@ -0,0 +1,47 @@ +# +# Default target +# + +default: gc.o + +include ../config/common.mk + +# +# compilation flags, etc. +# + +CPPFLAGS = $(INCLUDE) $(CONFIG_CPPFLAGS) \ + -DPCR_NO_RENAME -DPCR_NO_HOSTDEP_ERR +#CFLAGS = -DPCR $(CONFIG_CFLAGS) +CFLAGS = -DPCR $(CONFIG_CFLAGS) +SPECIALCFLAGS = # For code involving asm's + +ASPPFLAGS = $(INCLUDE) $(CONFIG_ASPPFLAGS) \ + -DPCR_NO_RENAME -DPCR_NO_HOSTDEP_ERR -DASM + +ASFLAGS = $(CONFIG_ASFLAGS) + +LDRFLAGS = $(CONFIG_LDRFLAGS) + +LDFLAGS = $(CONFIG_LDFLAGS) + +# +# BEGIN PACKAGE-SPECIFIC PART +# + +# Fix to point to local pcr installation directory. +PCRDIR= .. + +COBJ= alloc.o reclaim.o allchblk.o misc.o os_dep.o mark_rts.o headers.o mark.o obj_map.o pcr_interface.o blacklst.o finalize.o new_hblk.o real_malloc.o dyn_load.o dbg_mlc.o fnlz_mlc.o malloc.o stubborn.o checksums.o typd_mlc.o ptr_chck.o mallocx.o + +CSRC= reclaim.c allchblk.c misc.c alloc.c mach_dep.c os_dep.c mark_rts.c headers.c mark.c obj_map.c pcr_interface.c blacklst.c finalize.c new_hblk.c real_malloc.c dyn_load.c dbg_mlc.c fnlz_mlc.c malloc.c stubborn.c checksums.c typd_mlc.c ptr_chck.c mallocx.c + +SHELL= /bin/sh + +default: gc.o + +gc.o: $(COBJ) mach_dep.o + $(LDR) $(CONFIG_LDRFLAGS) -o gc.o $(COBJ) mach_dep.o + +mach_dep.o: mach_dep.c + $(CC) -c $(SPECIALCFLAGS) mach_dep.c diff --git a/README.QUICK b/README.QUICK new file mode 100644 index 0000000..3782cbd --- /dev/null +++ b/README.QUICK @@ -0,0 +1,85 @@ +Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers +Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. +Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved. +Copyright (c) 1999-2001 by Hewlett-Packard. All rights reserved. + +THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + +Permission is hereby granted to use or copy this program +for any purpose, provided the above notices are retained on all copies. +Permission to modify the code and to distribute modified code is granted, +provided the above notices are retained, and a notice that the code was +modified is included with the above copyright notice. + +A few files have other copyright holders. A few of the files needed +to use the GNU-style build procedure come with a modified GPL license +that appears not to significantly restrict use of the collector, though +use of those files for a purpose other than building the collector may +require the resulting code to be covered by the GPL. + +For more details and the names of other contributors, see the README.md, +doc/README.*, AUTHORS and include/gc.h files. These files describe typical +use of the collector on a machine that is already supported. + +For the version number, see README.md or include/gc_version.h files. + +INSTALLATION: +Under UN*X, Linux: +Alternative 1 (the old way): type "make -f Makefile.direct check". + Link against gc.a. + +Alternative 2 (the new way): type + "./configure --prefix=; make; make check; make install". + Link against /lib/libgc.a or /lib/libgc.so. + See doc/README.autoconf for details + +Under Windows 95, 98, Me, NT, or 2000: +copy the appropriate makefile to MAKEFILE, read it, and type "nmake test". +(Under Windows, this assumes you have Microsoft command-line tools +installed, and suitably configured.) +Read the machine specific README.XXX in the doc directory if one exists. + +If you need thread support, you will need to follow the special +platform-dependent instructions (win32), or define GC_THREADS +as described in doc/README.macros, or possibly use +--enable-threads=posix when running the configure script. + +If you wish to use the cord (structured string) library with the stand-alone +Makefile.direct, type "make -f Makefile.direct cords". +(This requires an ANSI C compiler. You may +need to redefine CC in the Makefile. The CORD_printf implementation in +cordprnt.c is known to be less than perfectly portable. The rest of the +package should still work.) See include/cord.h for the API. + +If you wish to use the collector from C++, type "make c++", or use +--enable-cplusplus with the configure script. With Makefile.direct, +these ones add further files to gc.a and to the include subdirectory. +With the alternate build process, this generates libgccpp. +See include/gc_cpp.h. + +TYPICAL USE: +Include "gc.h" from the include subdirectory. Link against the +appropriate library ("gc.a" under UN*X). Replace calls to malloc +by calls to GC_MALLOC, and calls to realloc by calls to GC_REALLOC. +If the object is known to never contain pointers, use GC_MALLOC_ATOMIC +instead of GC_MALLOC. + +Define GC_DEBUG before including gc.h for additional checking. + +More documentation on the collector interface can be found in README.md, +doc/gcinterface.html, include/gc.h, and other files in the doc directory. + +WARNINGS: + +Do not store the only pointer to an object in memory allocated +with system malloc, since the collector usually does not scan +memory allocated in this way. + +Use with threads may be supported on your system, but requires the +collector to be built with thread support. See Makefile. The collector +does not guarantee to scan thread-local storage (e.g. of the kind +accessed with pthread_getspecific()). The collector does scan +thread stacks though, so generally the best solution is to ensure that +any pointers stored in thread-local storage are also stored on the +thread's stack for the duration of their lifetime. diff --git a/README.md b/README.md new file mode 100644 index 0000000..67b6d5b --- /dev/null +++ b/README.md @@ -0,0 +1,612 @@ +# Boehm-Demers-Weiser Garbage Collector + +This is version 7.6.4 of a conservative garbage +collector for C and C++. + + +## Download + +You might find a more recent/stable version on the +[Download](https://github.com/ivmai/bdwgc/wiki/Download) page, or +[BDWGC site](http://www.hboehm.info/gc/). + +Also, the latest bug fixes and new features are available in the +[development repository](https://github.com/ivmai/bdwgc). + + +## Overview + +This is intended to be a general purpose, garbage collecting storage +allocator. The algorithms used are described in: + + * Boehm, H., and M. Weiser, "Garbage Collection in an Uncooperative + Environment", Software Practice & Experience, September 1988, pp. 807-820. + + * Boehm, H., A. Demers, and S. Shenker, "Mostly Parallel Garbage Collection", + Proceedings of the ACM SIGPLAN '91 Conference on Programming Language Design + and Implementation, SIGPLAN Notices 26, 6 (June 1991), pp. 157-164. + + * Boehm, H., "Space Efficient Conservative Garbage Collection", Proceedings + of the ACM SIGPLAN '91 Conference on Programming Language Design and + Implementation, SIGPLAN Notices 28, 6 (June 1993), pp. 197-206. + + * Boehm H., "Reducing Garbage Collector Cache Misses", Proceedings of the + 2000 International Symposium on Memory Management. + +Possible interactions between the collector and optimizing compilers are +discussed in + + * Boehm, H., and D. Chase, "A Proposal for GC-safe C Compilation", + The Journal of C Language Translation 4, 2 (December 1992). + +and + + * Boehm H., "Simple GC-safe Compilation", Proceedings of the ACM SIGPLAN '96 + Conference on Programming Language Design and Implementation. + +Unlike the collector described in the second reference, this collector +operates either with the mutator stopped during the entire collection +(default) or incrementally during allocations. (The latter is supported +on fewer machines.) On the most common platforms, it can be built +with or without thread support. On a few platforms, it can take advantage +of a multiprocessor to speed up garbage collection. + +Many of the ideas underlying the collector have previously been explored +by others. Notably, some of the run-time systems developed at Xerox PARC +in the early 1980s conservatively scanned thread stacks to locate possible +pointers (cf. Paul Rovner, "On Adding Garbage Collection and Runtime Types +to a Strongly-Typed Statically Checked, Concurrent Language" Xerox PARC +CSL 84-7). Doug McIlroy wrote a simpler fully conservative collector that +was part of version 8 UNIX (tm), but appears to not have received +widespread use. + +Rudimentary tools for use of the collector as a +[leak detector](http://www.hboehm.info/gc/leak.html) are included, +as is a fairly sophisticated string package "cord" that makes use of the +collector. (See doc/README.cords and H.-J. Boehm, R. Atkinson, and M. Plass, +"Ropes: An Alternative to Strings", Software Practice and Experience 25, 12 +(December 1995), pp. 1315-1330. This is very similar to the "rope" package +in Xerox Cedar, or the "rope" package in the SGI STL or the g++ distribution.) + +Further collector documentation can be found +in [overview.html](doc/overview.html). + + +## General Description + +This is a garbage collecting storage allocator that is intended to be +used as a plug-in replacement for C's malloc. + +Since the collector does not require pointers to be tagged, it does not +attempt to ensure that all inaccessible storage is reclaimed. However, +in our experience, it is typically more successful at reclaiming unused +memory than most C programs using explicit deallocation. Unlike manually +introduced leaks, the amount of unreclaimed memory typically stays +bounded. + +In the following, an "object" is defined to be a region of memory allocated +by the routines described below. + +Any objects not intended to be collected must be pointed to either +from other such accessible objects, or from the registers, +stack, data, or statically allocated bss segments. Pointers from +the stack or registers may point to anywhere inside an object. +The same is true for heap pointers if the collector is compiled with +`ALL_INTERIOR_POINTERS` defined, or `GC_all_interior_pointers` is otherwise +set, as is now the default. + +Compiling without `ALL_INTERIOR_POINTERS` may reduce accidental retention +of garbage objects, by requiring pointers from the heap to the beginning +of an object. But this no longer appears to be a significant +issue for most programs occupying a small fraction of the possible +address space. + +There are a number of routines which modify the pointer recognition +algorithm. `GC_register_displacement` allows certain interior pointers +to be recognized even if `ALL_INTERIOR_POINTERS` is nor defined. +`GC_malloc_ignore_off_page` allows some pointers into the middle of +large objects to be disregarded, greatly reducing the probability of +accidental retention of large objects. For most purposes it seems +best to compile with `ALL_INTERIOR_POINTERS` and to use +`GC_malloc_ignore_off_page` if you get collector warnings from +allocations of very large objects. See doc/debugging.html for details. + +_WARNING_: pointers inside memory allocated by the standard `malloc` are not +seen by the garbage collector. Thus objects pointed to only from such a +region may be prematurely deallocated. It is thus suggested that the +standard `malloc` be used only for memory regions, such as I/O buffers, that +are guaranteed not to contain pointers to garbage collectible memory. +Pointers in C language automatic, static, or register variables, +are correctly recognized. (Note that `GC_malloc_uncollectable` has +semantics similar to standard malloc, but allocates objects that are +traced by the collector.) + +_WARNING_: the collector does not always know how to find pointers in data +areas that are associated with dynamic libraries. This is easy to +remedy IF you know how to find those data areas on your operating +system (see `GC_add_roots`). Code for doing this under SunOS, IRIX +5.X and 6.X, HP/UX, Alpha OSF/1, Linux, and win32 is included and used +by default. (See doc/README.win32 for Win32 details.) On other systems +pointers from dynamic library data areas may not be considered by the +collector. If you're writing a program that depends on the collector +scanning dynamic library data areas, it may be a good idea to include +at least one call to `GC_is_visible` to ensure that those areas are +visible to the collector. + +Note that the garbage collector does not need to be informed of shared +read-only data. However if the shared library mechanism can introduce +discontiguous data areas that may contain pointers, then the collector does +need to be informed. + +Signal processing for most signals may be deferred during collection, +and during uninterruptible parts of the allocation process. +Like standard ANSI C mallocs, by default it is unsafe to invoke +malloc (and other GC routines) from a signal handler while another +malloc call may be in progress. + +The allocator/collector can also be configured for thread-safe operation. +(Full signal safety can also be achieved, but only at the cost of two system +calls per malloc, which is usually unacceptable.) + +_WARNING_: the collector does not guarantee to scan thread-local storage +(e.g. of the kind accessed with `pthread_getspecific`). The collector +does scan thread stacks, though, so generally the best solution is to +ensure that any pointers stored in thread-local storage are also +stored on the thread's stack for the duration of their lifetime. +(This is arguably a longstanding bug, but it hasn't been fixed yet.) + + +## Installation and Portability + +As distributed, the collector operates silently +In the event of problems, this can usually be changed by defining the +`GC_PRINT_STATS` or `GC_PRINT_VERBOSE_STATS` environment variables. This +will result in a few lines of descriptive output for each collection. +(The given statistics exhibit a few peculiarities. +Things don't appear to add up for a variety of reasons, most notably +fragmentation losses. These are probably much more significant for the +contrived program "test.c" than for your application.) + +On most Unix-like platforms, the collector can be built either using a +GNU autoconf-based build infrastructure (type `./configure; make` in the +simplest case), or with a classic makefile by itself (type +`make -f Makefile.direct`). + +Please note that the collector source repository does not contain configure +and similar auto-generated files, thus the full procedure of autoconf-based +build of `master` branch of the collector (using `master` branch of +libatomic_ops source repository as well) could look like: + + git clone git://github.com/ivmai/bdwgc.git + cd bdwgc + git clone git://github.com/ivmai/libatomic_ops.git + ./autogen.sh + ./configure + make -j + make check + +If you are getting "syntax error near unexpected token ATOMIC_OPS" during +configure execution, this means pkg.m4 cannot be found, most probably +you should run `pkg-config` once before running `./autogen.sh` (autoreconf). + +Below we focus on the collector build using classic makefile. +For the Makefile.direct-based process, typing `make check` instead of `make` +will automatically build the collector and then run `setjmp_test` and `gctest`. +`Setjmp_test` will give you information about configuring the collector, which is +useful primarily if you have a machine that's not already supported. Gctest is +a somewhat superficial test of collector functionality. Failure is indicated +by a core dump or a message to the effect that the collector is broken. Gctest +takes about a second to two to run on reasonable 2007 vintage desktops. It may +use up to about 30MB of memory. (The multi-threaded version will use more. +64-bit versions may use more.) `make test` will also, as its last step, attempt +to build and test the "cord" string library.) + +Makefile.direct will generate a library gc.a which you should link against. +Typing "make cords" will add the cord library to gc.a. + +The GNU style build process understands the usual targets. `make check` +runs a number of tests. `make install` installs at least libgc, and libcord. +Try `./configure --help` to see the configuration options. It is currently +not possible to exercise all combinations of build options this way. + +It is suggested that if you need to replace a piece of the collector +(e.g. GC_mark_rts.c) you simply list your version ahead of gc.a on the +ld command line, rather than replacing the one in gc.a. (This will +generate numerous warnings under some versions of AIX, but it still +works.) + +All include files that need to be used by clients will be put in the +include subdirectory. (Normally this is just gc.h. `make cords` adds +"cord.h" and "ec.h".) + +The collector currently is designed to run essentially unmodified on +machines that use a flat 32-bit or 64-bit address space. +That includes the vast majority of Workstations and X86 (X >= 3) PCs. +(The list here was deleted because it was getting too long and constantly +out of date.) + +In a few cases (Amiga, OS/2, Win32, MacOS) a separate makefile +or equivalent is supplied. Many of these have separate README.system +files. + +Dynamic libraries are completely supported only under SunOS/Solaris, +(and even that support is not functional on the last Sun 3 release), +Linux, FreeBSD, NetBSD, IRIX 5&6, HP/UX, Win32 (not Win32S) and OSF/1 +on DEC AXP machines plus perhaps a few others listed near the top +of dyn_load.c. On other machines we recommend that you do one of +the following: + + 1) Add dynamic library support (and send us the code). + 2) Use static versions of the libraries. + 3) Arrange for dynamic libraries to use the standard malloc. + This is still dangerous if the library stores a pointer to a + garbage collected object. But nearly all standard interfaces + prohibit this, because they deal correctly with pointers + to stack allocated objects. (Strtok is an exception. Don't + use it.) + +In all cases we assume that pointer alignment is consistent with that +enforced by the standard C compilers. If you use a nonstandard compiler +you may have to adjust the alignment parameters defined in gc_priv.h. +Note that this may also be an issue with packed records/structs, if those +enforce less alignment for pointers. + +A port to a machine that is not byte addressed, or does not use 32 bit +or 64 bit addresses will require a major effort. A port to plain MSDOS +or win16 is hard. + +For machines not already mentioned, or for nonstandard compilers, +some porting suggestions are provided in doc/porting.html. + + +## The C Interface to the Allocator + +The following routines are intended to be directly called by the user. +Note that usually only `GC_malloc` is necessary. `GC_clear_roots` and +`GC_add_roots` calls may be required if the collector has to trace +from nonstandard places (e.g. from dynamic library data areas on a +machine on which the collector doesn't already understand them.) On +some machines, it may be desirable to set `GC_stacktop` to a good +approximation of the stack base. (This enhances code portability on +HP PA machines, since there is no good way for the collector to +compute this value.) Client code may include "gc.h", which defines +all of the following, plus many others. + + 1) `GC_malloc(nbytes)` + - Allocate an object of size nbytes. Unlike malloc, the object is + cleared before being returned to the user. `GC_malloc` will + invoke the garbage collector when it determines this to be appropriate. + GC_malloc may return 0 if it is unable to acquire sufficient + space from the operating system. This is the most probable + consequence of running out of space. Other possible consequences + are that a function call will fail due to lack of stack space, + or that the collector will fail in other ways because it cannot + maintain its internal data structures, or that a crucial system + process will fail and take down the machine. Most of these + possibilities are independent of the malloc implementation. + + 2) `GC_malloc_atomic(nbytes)` + - Allocate an object of size nbytes that is guaranteed not to contain any + pointers. The returned object is not guaranteed to be cleared. + (Can always be replaced by `GC_malloc`, but results in faster collection + times. The collector will probably run faster if large character + arrays, etc. are allocated with `GC_malloc_atomic` than if they are + statically allocated.) + + 3) `GC_realloc(object, new_size)` + - Change the size of object to be `new_size`. Returns a pointer to the + new object, which may, or may not, be the same as the pointer to + the old object. The new object is taken to be atomic if and only if the + old one was. If the new object is composite and larger than the original + object,then the newly added bytes are cleared (we hope). This is very + likely to allocate a new object, unless `MERGE_SIZES` is defined in + gc_priv.h. Even then, it is likely to recycle the old object only if the + object is grown in small additive increments (which, we claim, is + generally bad coding practice.) + + 4) `GC_free(object)` + - Explicitly deallocate an object returned by `GC_malloc` or + `GC_malloc_atomic`. Not necessary, but can be used to minimize + collections if performance is critical. Probably a performance + loss for very small objects (<= 8 bytes). + + 5) `GC_expand_hp(bytes)` + - Explicitly increase the heap size. (This is normally done automatically + if a garbage collection failed to `GC_reclaim` enough memory. Explicit + calls to `GC_expand_hp` may prevent unnecessarily frequent collections at + program startup.) + + 6) `GC_malloc_ignore_off_page(bytes)` + - Identical to `GC_malloc`, but the client promises to keep a pointer to + the somewhere within the first 256 bytes of the object while it is + live. (This pointer should normally be declared volatile to prevent + interference from compiler optimizations.) This is the recommended + way to allocate anything that is likely to be larger than 100 Kbytes + or so. (`GC_malloc` may result in failure to reclaim such objects.) + + 7) `GC_set_warn_proc(proc)` + - Can be used to redirect warnings from the collector. Such warnings + should be rare, and should not be ignored during code development. + + 8) `GC_enable_incremental()` + - Enables generational and incremental collection. Useful for large + heaps on machines that provide access to page dirty information. + Some dirty bit implementations may interfere with debugging + (by catching address faults) and place restrictions on heap arguments + to system calls (since write faults inside a system call may not be + handled well). + + 9) Several routines to allow for registration of finalization code. + User supplied finalization code may be invoked when an object becomes + unreachable. To call `(*f)(obj, x)` when obj becomes inaccessible, use + `GC_register_finalizer(obj, f, x, 0, 0);` + For more sophisticated uses, and for finalization ordering issues, + see gc.h. + +The global variable `GC_free_space_divisor` may be adjusted up from it +default value of 3 to use less space and more collection time, or down for +the opposite effect. Setting it to 1 will almost disable collections +and cause all allocations to simply grow the heap. + +The variable `GC_non_gc_bytes`, which is normally 0, may be changed to reflect +the amount of memory allocated by the above routines that should not be +considered as a candidate for collection. Careless use may, of course, result +in excessive memory consumption. + +Some additional tuning is possible through the parameters defined +near the top of gc_priv.h. + +If only `GC_malloc` is intended to be used, it might be appropriate to define: + + #define malloc(n) GC_malloc(n) + #define calloc(m,n) GC_malloc((m)*(n)) + +For small pieces of VERY allocation intensive code, gc_inl.h includes +some allocation macros that may be used in place of `GC_malloc` and +friends. + +All externally visible names in the garbage collector start with `GC_`. +To avoid name conflicts, client code should avoid this prefix, except when +accessing garbage collector routines or variables. + +There are provisions for allocation with explicit type information. +This is rarely necessary. Details can be found in gc_typed.h. + + +## The C++ Interface to the Allocator + +The Ellis-Hull C++ interface to the collector is included in +the collector distribution. If you intend to use this, type +`make c++` after the initial build of the collector is complete. +See gc_cpp.h for the definition of the interface. This interface +tries to approximate the Ellis-Detlefs C++ garbage collection +proposal without compiler changes. + +Very often it will also be necessary to use gc_allocator.h and the +allocator declared there to construct STL data structures. Otherwise +subobjects of STL data structures will be allocated using a system +allocator, and objects they refer to may be prematurely collected. + + +## Use as Leak Detector + +The collector may be used to track down leaks in C programs that are +intended to run with malloc/free (e.g. code with extreme real-time or +portability constraints). To do so define `FIND_LEAK` in Makefile. +This will cause the collector to invoke the `report_leak` +routine defined near the top of reclaim.c whenever an inaccessible +object is found that has not been explicitly freed. Such objects will +also be automatically reclaimed. + +If all objects are allocated with `GC_DEBUG_MALLOC` (see next section), then +the default version of report_leak will report at least the source file and +line number at which the leaked object was allocated. This may sometimes be +sufficient. (On a few machines, it will also report a cryptic stack trace. +If this is not symbolic, it can sometimes be called into a symbolic stack +trace by invoking program "foo" with "tools/callprocs.sh foo". It is a short +shell script that invokes adb to expand program counter values to symbolic +addresses. It was largely supplied by Scott Schwartz.) + +Note that the debugging facilities described in the next section can +sometimes be slightly LESS effective in leak finding mode, since in +leak finding mode, `GC_debug_free` actually results in reuse of the object. +(Otherwise the object is simply marked invalid.) Also note that the test +program is not designed to run meaningfully in `FIND_LEAK` mode. +Use "make gc.a" to build the collector. + + +## Debugging Facilities + +The routines `GC_debug_malloc`, `GC_debug_malloc_atomic`, `GC_debug_realloc`, +and `GC_debug_free` provide an alternate interface to the collector, which +provides some help with memory overwrite errors, and the like. +Objects allocated in this way are annotated with additional +information. Some of this information is checked during garbage +collections, and detected inconsistencies are reported to stderr. + +Simple cases of writing past the end of an allocated object should +be caught if the object is explicitly deallocated, or if the +collector is invoked while the object is live. The first deallocation +of an object will clear the debugging info associated with an +object, so accidentally repeated calls to `GC_debug_free` will report the +deallocation of an object without debugging information. Out of +memory errors will be reported to stderr, in addition to returning `NULL`. + +`GC_debug_malloc` checking during garbage collection is enabled +with the first call to `GC_debug_malloc`. This will result in some +slowdown during collections. If frequent heap checks are desired, +this can be achieved by explicitly invoking `GC_gcollect`, e.g. from +the debugger. + +`GC_debug_malloc` allocated objects should not be passed to `GC_realloc` +or `GC_free`, and conversely. It is however acceptable to allocate only +some objects with `GC_debug_malloc`, and to use `GC_malloc` for other objects, +provided the two pools are kept distinct. In this case, there is a very +low probability that `GC_malloc` allocated objects may be misidentified as +having been overwritten. This should happen with probability at most +one in 2**32. This probability is zero if `GC_debug_malloc` is never called. + +`GC_debug_malloc`, `GC_malloc_atomic`, and `GC_debug_realloc` take two +additional trailing arguments, a string and an integer. These are not +interpreted by the allocator. They are stored in the object (the string is +not copied). If an error involving the object is detected, they are printed. + +The macros `GC_MALLOC`, `GC_MALLOC_ATOMIC`, `GC_REALLOC`, `GC_FREE`, and +`GC_REGISTER_FINALIZER` are also provided. These require the same arguments +as the corresponding (nondebugging) routines. If gc.h is included +with `GC_DEBUG` defined, they call the debugging versions of these +functions, passing the current file name and line number as the two +extra arguments, where appropriate. If gc.h is included without `GC_DEBUG` +defined, then all these macros will instead be defined to their nondebugging +equivalents. (`GC_REGISTER_FINALIZER` is necessary, since pointers to +objects with debugging information are really pointers to a displacement +of 16 bytes form the object beginning, and some translation is necessary +when finalization routines are invoked. For details, about what's stored +in the header, see the definition of the type oh in debug_malloc.c) + + +## Incremental/Generational Collection + +The collector normally interrupts client code for the duration of +a garbage collection mark phase. This may be unacceptable if interactive +response is needed for programs with large heaps. The collector +can also run in a "generational" mode, in which it usually attempts to +collect only objects allocated since the last garbage collection. +Furthermore, in this mode, garbage collections run mostly incrementally, +with a small amount of work performed in response to each of a large number of +`GC_malloc` requests. + +This mode is enabled by a call to `GC_enable_incremental`. + +Incremental and generational collection is effective in reducing +pause times only if the collector has some way to tell which objects +or pages have been recently modified. The collector uses two sources +of information: + +1. Information provided by the VM system. This may be provided in + one of several forms. Under Solaris 2.X (and potentially under other + similar systems) information on dirty pages can be read from the + /proc file system. Under other systems (currently SunOS4.X) it is + possible to write-protect the heap, and catch the resulting faults. + On these systems we require that system calls writing to the heap + (other than read) be handled specially by client code. + See os_dep.c for details. + +2. Information supplied by the programmer. We define "stubborn" + objects to be objects that are rarely changed. Such an object + can be allocated (and enabled for writing) with `GC_malloc_stubborn`. + Once it has been initialized, the collector should be informed with + a call to `GC_end_stubborn_change`. Subsequent writes that store + pointers into the object must be preceded by a call to + `GC_change_stubborn`. + +This mechanism performs best for objects that are written only for +initialization, and such that only one stubborn object is writable +at once. It is typically not worth using for short-lived +objects. Stubborn objects are treated less efficiently than pointer-free +(atomic) objects. + +A rough rule of thumb is that, in the absence of VM information, garbage +collection pauses are proportional to the amount of pointerful storage +plus the amount of modified "stubborn" storage that is reachable during +the collection. + +Initial allocation of stubborn objects takes longer than allocation +of other objects, since other data structures need to be maintained. + +We recommend against random use of stubborn objects in client +code, since bugs caused by inappropriate writes to stubborn objects +are likely to be very infrequently observed and hard to trace. +However, their use may be appropriate in a few carefully written +library routines that do not make the objects themselves available +for writing by client code. + + +## Bugs + +Any memory that does not have a recognizable pointer to it will be +reclaimed. Exclusive-or'ing forward and backward links in a list +doesn't cut it. + +Some C optimizers may lose the last undisguised pointer to a memory +object as a consequence of clever optimizations. This has almost +never been observed in practice. + +This is not a real-time collector. In the standard configuration, +percentage of time required for collection should be constant across +heap sizes. But collection pauses will increase for larger heaps. +They will decrease with the number of processors if parallel marking +is enabled. + +(On 2007 vintage machines, GC times may be on the order of 5 msecs +per MB of accessible memory that needs to be scanned and processor. +Your mileage may vary.) The incremental/generational collection facility +may help in some cases. + + +## Feedback, Contribution, Questions and Notifications + +Please address bug reports and new feature ideas to +[GitHub issues](https://github.com/ivmai/bdwgc/issues). Before the +submission please check that it has not been done yet by someone else. + +If you want to contribute, submit +a [pull request](https://github.com/ivmai/bdwgc/pulls) to GitHub. + +If you need help, use +[Stack Overflow](https://stackoverflow.com/questions/tagged/boehm-gc). +Older technical discussions are available in `bdwgc` mailing list archive - it +can be downloaded as a +[compressed file](https://github.com/ivmai/bdwgc/files/1038163/bdwgc-mailing-list-archive-2017_04.tar.gz) +or browsed at [Narkive](http://bdwgc.opendylan.narkive.com). + +To get new release announcements, subscribe to +[RSS feed](https://github.com/ivmai/bdwgc/releases.atom). +(To receive the notifications by email, a 3rd-party free service like +[IFTTT RSS Feed](https://ifttt.com/feed) can be setup.) +To be notified on all issues, please +[watch](https://github.com/ivmai/bdwgc/watchers) the project on +GitHub. + + +## Copyright & Warranty + + * Copyright (c) 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1996 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved. + * Copyright (c) 1999-2011 by Hewlett-Packard Development Company. + +The files pthread_stop_world.c and pthread_support.c are also + + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + +The files Makefile.am, and configure.in are + +* Copyright (c) 2001 by Red Hat Inc. All rights reserved. + +Several files supporting GNU-style builds are copyrighted by the Free +Software Foundation, and carry a different license from that given +below. The files included in the libatomic_ops distribution (included +here) use either the license below, or a similar MIT-style license, +or, for some files not actually used by the garbage-collector library, the +GPL. + +THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + +Permission is hereby granted to use or copy this program +for any purpose, provided the above notices are retained on all copies. +Permission to modify the code and to distribute modified code is granted, +provided the above notices are retained, and a notice that the code was +modified is included with the above copyright notice. + +A few of the files needed to use the GNU-style build procedure come with +slightly different licenses, though they are all similar in spirit. A few +are GPL'ed, but with an exception that should cover all uses in the +collector. (If you are concerned about such things, I recommend you look +at the notice in config.guess or ltmain.sh.) + +The atomic_ops library contains some code that is covered by the GNU General +Public License, but is not needed by, nor linked into the collector library. +It is included here only because the atomic_ops distribution is, for +simplicity, included in its entirety. diff --git a/SMakefile.amiga b/SMakefile.amiga new file mode 100644 index 0000000..6400a99 --- /dev/null +++ b/SMakefile.amiga @@ -0,0 +1,178 @@ + +# Rewritten smakefile for amiga / sas/c. -Kjetil M. +# Don't use the cord-package if you define parm=both or parm=reg. + + +#----------------TOOLS-------------------------------- +CC=sc +LINKER=slink +LIBER=oml + +#----------------CPU OPTIONS-------------------------- + +CPU=68060 + +#----------------FPU OPTIONS-------------------------- + +MATH=8 +MATHLIB=LIB:scm881.lib + +#----------------COMPILER OPTIONS--------------------- + +IGNORE= IGNORE=85 IGNORE=154 IGNORE=161 IGNORE=100 + +OPTIMIZE=optimize optimizetime optglobal optimizerdepth=100 optimizerpeephole optloop OPTSCHED optimizerinlocal optimizerrecurdepth=100 +# optimizerinline optimizercomplexity=100 + +OPT= $(OPTIMIZE) CPU=$(CPU) math=$(MATH) NOSTACKCHECK VERBOSE \ +MAPHUNK NOVERSION NOICONS nodebug \ +parm=reg \ +DEFINE __USE_SYSBASE + + +SOPT= $(OPT) $(IGNORE) \ +DEFINE AMIGA_SKIP_SEG \ +DEFINE GC_ATOMIC_UNCOLLECTABLE \ +DEFINE GC_AMIGA_FASTALLOC \ +DEFINE GC_AMIGA_RETRY \ +DEFINE GC_AMIGA_PRINTSTATS \ +DEFINE GC_AMIGA_GC + + +#DEFINE ALL_INTERIOR_POINTERS \ + + +SCOPT= $(SOPT) define GC_AMIGA_MAKINGLIB + +CSCOPT= $(OPT) DEFINE AMIGA IGNORE=100 IGNORE=161 + +#------------------LINKING---------------------------- + + +all: gctest setjmp_t cord/cordtest + +clean: + delete *.lib gctest setjmp_t *.o *.lnk cord/*.o cord/*.lib cord/*.lnk cord/cordtest + smake + +test: setjmp_t gctest cord/cordtest + setjmp_t + gctest + cord/cordtest + +gctest: gc$(CPU).lib GCAmigaOS$(CPU).lib test.o + $(LINKER) LIB:c.o test.o TO gctest LIB gc$(CPU).lib LIB:sc.lib $(MATHLIB) + +setjmp_t: setjmp_t.o gc.h + $(LINKER) LIB:c.o setjmp_t.o to setjmp_t lib LIB:sc.lib + +cord/cordtest: cord/cordtest.o cord/cord$(CPU).lib gc$(CPU).lib + slink LIB:c.o cord/cordtest.o LIB $(MATHLIB) gc$(CPU).lib cord/cord$(CPU).lib LIB:sc.lib TO cord/cordtest + + +#------------------LIBBING---------------------------- + +OBJS= alloc.o reclaim.o allchblk.o misc.o mach_dep.o os_dep.o mark_rts.o headers.o mark.o obj_map.o blacklst.o finalize.o new_hblk.o real_malloc.o dyn_load.o dbg_mlc.o malloc.o stubborn.o checksums.o typd_mlc.o ptr_chck.o mallocx.o fnlz_mlc.o + +gc$(CPU).lib: $(OBJS) + $(LIBER) gc$(CPU).lib r $(OBJS) + + +COBJS = cord/cordbscs.o cord/cordprnt.o cord/cordxtra.o + +cord/cord$(CPU).lib: $(COBJS) + oml cord/cord$(CPU).lib r $(COBJS) + +#------------------COMPILING-------------------------- + +INC= gc_private.h gc_hdrs.h gc.h gcconfig.h + +alloc.o : alloc.c $(INC) + $(CC) alloc.c $(SCOPT) ignore=7 + +reclaim.o : reclaim.c $(INC) + $(CC) reclaim.c $(SCOPT) + +allchblk.o : allchblk.c $(INC) + $(CC) allchblk.c $(SCOPT) + +misc.o : misc.c $(INC) + $(CC) misc.c $(SCOPT) + +os_dep.o : os_dep.c $(INC) extra/AmigaOS.c + $(CC) os_dep.c $(SCOPT) + +mark_rts.o : mark_rts.c $(INC) + $(CC) mark_rts.c $(SCOPT) + +headers.o : headers.c $(INC) + $(CC) headers.c $(SCOPT) + +mark.o : mark.c $(INC) + $(CC) mark.c $(SCOPT) + +obj_map.o : obj_map.c $(INC) + $(CC) obj_map.c $(SCOPT) + +blacklst.o : blacklst.c $(INC) + $(CC) blacklst.c $(SCOPT) + +finalize.o : finalize.c $(INC) + $(CC) finalize.c $(SCOPT) noopt +# Could sas/c still have problems with this one? Gctest sometimes fails to finalize all. + +new_hblk.o : new_hblk.c $(INC) + $(CC) new_hblk.c $(SCOPT) + +real_malloc.o : real_malloc.c $(INC) + $(CC) real_malloc.c $(SCOPT) + +dyn_load.o : dyn_load.c $(INC) + $(CC) dyn_load.c $(SCOPT) + +dbg_mlc.o : dbg_mlc.c $(INC) + $(CC) dbg_mlc.c $(SCOPT) + +fnlz_mlc.o : fnlz_mlc.c $(INC) + $(CC) fnlz_mlc.c $(SCOPT) + +malloc.o : malloc.c $(INC) + $(CC) malloc.c $(SCOPT) + +mallocx.o : mallocx.c $(INC) + $(CC) mallocx.c $(SCOPT) + +stubborn.o : stubborn.c $(INC) + $(CC) stubborn.c $(SCOPT) + +checksums.o : checksums.c $(INC) + $(CC) checksums.c $(SCOPT) + +typd_mlc.o: typd_mlc.c $(INC) + $(CC) typd_mlc.c $(SCOPT) + +mach_dep.o : mach_dep.c $(INC) + $(CC) mach_dep.c $(SCOPT) + +ptr_chck.o: ptr_chck.c $(INC) + $(CC) ptr_chck.c $(SCOPT) + +test.o : test.c $(INC) + $(CC) test.c $(SOPT) + +setjmp_t: tools/setjmp_t.c gc.h + $(CC) tools/setjmp_t.c $(SOPT) + +# cords: + +cord/cordbscs.o: cord/cordbscs.c + sc cord/cordbscs.c $(CSCOPT) + +cord/cordprnt.o: cord/cordprnt.c + sc cord/cordprnt.c $(CSCOPT) + +cord/cordxtra.o: cord/cordxtra.c + sc cord/cordxtra.c $(CSCOPT) + +cord/cordtest.o: cord/tests/cordtest.c + sc cord/tests/cordtest.c $(CSCOPT) diff --git a/WCC_MAKEFILE b/WCC_MAKEFILE new file mode 100644 index 0000000..b39df38 --- /dev/null +++ b/WCC_MAKEFILE @@ -0,0 +1,196 @@ +# Makefile for Watcom C/C++ 10.5, 10.6, 11.0 on NT, OS2 and DOS4GW. +# May work with Watcom 10.0. + +# Uncomment one of the lines below for cross compilation. +SYSTEM=MSWIN32 +#SYSTEM=DOS4GW +#SYSTEM=OS2 + +# The collector can be built either as dynamic or as static library. +# Select the library type you need. +#MAKE_AS_DLL=1 +MAKE_AS_LIB=1 + +# Select calling conventions. +# Possible choices are r and s. +CALLING=s + +# Select target CPU. +# Possible choices are 3, 4, 5, and 6. +# The last choice available only since version 11.0. +CPU=5 + +# Set optimization options. +# Watcom before 11.0 does not support option "-oh". +OPTIM=-oneatx -s +#OPTIM=-ohneatx -s + +DEFS=-DALL_INTERIOR_POINTERS #-DSMALL_CONFIG #-DGC_DEBUG + + +##### + +!ifndef SYSTEM +!ifdef __MSDOS__ +SYSTEM=DOS4GW +!else ifdef __NT__ +SYSTEM=MSWIN32 +!else ifdef __OS2__ +SYSTEM=OS2 +!else +SYSTEM=Unknown +!endif +!endif + +!define $(SYSTEM) + +!ifdef DOS4GW +SYSFLAG=-DDOS4GW -bt=dos +!else ifdef MSWIN32 +SYSFLAG=-DMSWIN32 -bt=nt +!else ifdef OS2 +SYSFLAG=-DOS2 -bt=os2 +!else +!error undefined or unsupported target platform: $(SYSTEM) +!endif +!ifdef MAKE_AS_DLL +DLLFLAG=-bd -DGC_DLL +TEST_DLLFLAG=-DGC_DLL +!else ifdef MAKE_AS_LIB +DLLFLAG= +TEST_DLLFLAG= +!else +!error Either MAKE_AS_LIB or MAKE_AS_DLL should be defined +!endif + +CC=wcc386 +CXX=wpp386 + +# -DUSE_GENERIC is required ! +CFLAGS=-$(CPU)$(CALLING) $(OPTIM) -zp4 -zc $(SYSFLAG) $(DLLFLAG) -DUSE_GENERIC $(DEFS) +CXXFLAGS= $(CFLAGS) +TEST_CFLAGS=-$(CPU)$(CALLING) $(OPTIM) -zp4 -zc $(SYSFLAG) $(TEST_DLLFLAG) $(DEFS) +TEST_CXXFLAGS= $(TEST_CFLAGS) + +OBJS= alloc.obj reclaim.obj allchblk.obj misc.obj & + mach_dep.obj os_dep.obj mark_rts.obj headers.obj mark.obj & + obj_map.obj blacklst.obj finalize.obj new_hblk.obj & + dbg_mlc.obj malloc.obj stubborn.obj dyn_load.obj & + typd_mlc.obj ptr_chck.obj mallocx.obj fnlz_mlc.obj + +all: gc.lib gctest.exe test_cpp.exe + +!ifdef MAKE_AS_DLL + +gc.lib: gc.dll gc_cpp.obj + *wlib -b -c -n -p=512 $@ +gc.dll +gc_cpp.obj + +gc.dll: $(OBJS) .AUTODEPEND + @%create $*.lnk +!ifdef DOS4GW + @%append $*.lnk sys os2v2_dll +!else ifdef MSWIN32 + @%append $*.lnk sys nt_dll +!else ifdef OS2 + @%append $*.lnk sys os2v2_dll +!endif + @%append $*.lnk name $* + @for %i in ($(OBJS)) do @%append $*.lnk file '%i' +!ifeq CALLING s + @%append $*.lnk export GC_is_marked + @%append $*.lnk export GC_incr_bytes_allocd + @%append $*.lnk export GC_incr_bytes_freed + @%append $*.lnk export GC_generic_malloc_words_small +!else + @%append $*.lnk export GC_is_marked_ + @%append $*.lnk export GC_incr_bytes_allocd_ + @%append $*.lnk export GC_incr_bytes_freed_ + @%append $*.lnk export GC_generic_malloc_words_small_ +!endif + *wlink @$*.lnk +!else +gc.lib: $(OBJS) gc_cpp.obj + @%create $*.lb1 + @for %i in ($(OBJS)) do @%append $*.lb1 +'%i' + @%append $*.lb1 +'gc_cpp.obj' + *wlib -b -c -n -p=512 $@ @$*.lb1 + +!endif + + +gctest.exe: test.obj gc.lib + %create $*.lnk +!ifdef DOS4GW + @%append $*.lnk sys dos4g +!else ifdef MSWIN32 + @%append $*.lnk sys nt +!else ifdef OS2 + @%append $*.lnk sys os2v2 +!endif + @%append $*.lnk op case + @%append $*.lnk op stack=256K + @%append $*.lnk name $* + @%append $*.lnk file test.obj + @%append $*.lnk library gc.lib +!ifdef MAKE_AS_DLL +!ifeq CALLING s + @%append $*.lnk import GC_is_marked gc +!else + @%append $*.lnk import GC_is_marked_ gc +!endif +!endif + *wlink @$*.lnk +test_cpp.exe: test_cpp.obj gc.lib + %create $*.lnk +!ifdef DOS4GW + @%append $*.lnk sys dos4g +!else ifdef MSWIN32 + @%append $*.lnk sys nt +!else ifdef OS2 + @%append $*.lnk sys os2v2 +!endif + @%append $*.lnk op case + @%append $*.lnk op stack=256K + @%append $*.lnk name $* + @%append $*.lnk file test_cpp.obj + @%append $*.lnk library gc.lib +!ifdef MAKE_AS_DLL +!ifeq CALLING s + @%append $*.lnk import GC_incr_bytes_allocd gc + @%append $*.lnk import GC_incr_bytes_freed gc + @%append $*.lnk import GC_generic_malloc_words_small gc +!else + @%append $*.lnk import GC_incr_bytes_allocd_ gc + @%append $*.lnk import GC_incr_bytes_freed_ gc + @%append $*.lnk import GC_generic_malloc_words_small_ gc +!endif +!endif + *wlink @$*.lnk + +gc_cpp.obj: gc_cpp.cc .AUTODEPEND + $(CXX) $(TEST_CXXFLAGS) -iinclude $*.cc +test.obj: tests\test.c .AUTODEPEND + $(CC) $(TEST_CFLAGS) $*.c +test_cpp.obj: tests\test_cpp.cc .AUTODEPEND + $(CXX) $(TEST_CXXFLAGS) -iinclude $*.cc + + +.c.obj: .AUTODEPEND + $(CC) $(CFLAGS) $*.c + +.cc.obj: .AUTODEPEND + $(CXX) $(CXXFLAGS) $*.cc + +clean : .SYMBOLIC + @if exist *.obj del *.obj + @if exist *.map del *.map + @if exist *.lnk del *.lnk + @if exist *.lb1 del *.lb1 + @if exist *.sym del *.sym + @if exist *.err del *.err + @if exist *.tmp del *.tmp + @if exist *.lst del *.lst + @if exist *.exe del *.exe + @if exist *.log del *.log + @if exist *.lib del *.lib + @if exist *.dll del *.dll diff --git a/aclocal.m4 b/aclocal.m4 new file mode 100644 index 0000000..127d179 --- /dev/null +++ b/aclocal.m4 @@ -0,0 +1,1490 @@ +# generated automatically by aclocal 1.15 -*- Autoconf -*- + +# Copyright (C) 1996-2014 Free Software Foundation, Inc. + +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])]) +m4_ifndef([AC_AUTOCONF_VERSION], + [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl +m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],, +[m4_warning([this file was generated for autoconf 2.69. +You have another version of autoconf. It may work, but is not guaranteed to. +If you have problems, you may need to regenerate the build system entirely. +To do so, use the procedure documented by the package, typically 'autoreconf'.])]) + +# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*- +# serial 12 (pkg-config-0.29.2) + +dnl Copyright © 2004 Scott James Remnant . +dnl Copyright © 2012-2015 Dan Nicholson +dnl +dnl This program is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 2 of the License, or +dnl (at your option) any later version. +dnl +dnl This program is distributed in the hope that it will be useful, but +dnl WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +dnl General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program; if not, write to the Free Software +dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA +dnl 02111-1307, USA. +dnl +dnl As a special exception to the GNU General Public License, if you +dnl distribute this file as part of a program that contains a +dnl configuration script generated by Autoconf, you may include it under +dnl the same distribution terms that you use for the rest of that +dnl program. + +dnl PKG_PREREQ(MIN-VERSION) +dnl ----------------------- +dnl Since: 0.29 +dnl +dnl Verify that the version of the pkg-config macros are at least +dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's +dnl installed version of pkg-config, this checks the developer's version +dnl of pkg.m4 when generating configure. +dnl +dnl To ensure that this macro is defined, also add: +dnl m4_ifndef([PKG_PREREQ], +dnl [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])]) +dnl +dnl See the "Since" comment for each macro you use to see what version +dnl of the macros you require. +m4_defun([PKG_PREREQ], +[m4_define([PKG_MACROS_VERSION], [0.29.2]) +m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1, + [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])]) +])dnl PKG_PREREQ + +dnl PKG_PROG_PKG_CONFIG([MIN-VERSION]) +dnl ---------------------------------- +dnl Since: 0.16 +dnl +dnl Search for the pkg-config tool and set the PKG_CONFIG variable to +dnl first found in the path. Checks that the version of pkg-config found +dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is +dnl used since that's the first version where most current features of +dnl pkg-config existed. +AC_DEFUN([PKG_PROG_PKG_CONFIG], +[m4_pattern_forbid([^_?PKG_[A-Z_]+$]) +m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$]) +m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$]) +AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) +AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) +AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) + +if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then + AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) +fi +if test -n "$PKG_CONFIG"; then + _pkg_min_version=m4_default([$1], [0.9.0]) + AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version]) + if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + PKG_CONFIG="" + fi +fi[]dnl +])dnl PKG_PROG_PKG_CONFIG + +dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) +dnl ------------------------------------------------------------------- +dnl Since: 0.18 +dnl +dnl Check to see whether a particular set of modules exists. Similar to +dnl PKG_CHECK_MODULES(), but does not set variables or print errors. +dnl +dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG]) +dnl only at the first occurence in configure.ac, so if the first place +dnl it's called might be skipped (such as if it is within an "if", you +dnl have to call PKG_CHECK_EXISTS manually +AC_DEFUN([PKG_CHECK_EXISTS], +[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl +if test -n "$PKG_CONFIG" && \ + AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then + m4_default([$2], [:]) +m4_ifvaln([$3], [else + $3])dnl +fi]) + +dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES]) +dnl --------------------------------------------- +dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting +dnl pkg_failed based on the result. +m4_define([_PKG_CONFIG], +[if test -n "$$1"; then + pkg_cv_[]$1="$$1" + elif test -n "$PKG_CONFIG"; then + PKG_CHECK_EXISTS([$3], + [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes ], + [pkg_failed=yes]) + else + pkg_failed=untried +fi[]dnl +])dnl _PKG_CONFIG + +dnl _PKG_SHORT_ERRORS_SUPPORTED +dnl --------------------------- +dnl Internal check to see if pkg-config supports short errors. +AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED], +[AC_REQUIRE([PKG_PROG_PKG_CONFIG]) +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi[]dnl +])dnl _PKG_SHORT_ERRORS_SUPPORTED + + +dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], +dnl [ACTION-IF-NOT-FOUND]) +dnl -------------------------------------------------------------- +dnl Since: 0.4.0 +dnl +dnl Note that if there is a possibility the first call to +dnl PKG_CHECK_MODULES might not happen, you should be sure to include an +dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac +AC_DEFUN([PKG_CHECK_MODULES], +[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl +AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl +AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl + +pkg_failed=no +AC_MSG_CHECKING([for $2]) + +_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2]) +_PKG_CONFIG([$1][_LIBS], [libs], [$2]) + +m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS +and $1[]_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details.]) + +if test $pkg_failed = yes; then + AC_MSG_RESULT([no]) + _PKG_SHORT_ERRORS_SUPPORTED + if test $_pkg_short_errors_supported = yes; then + $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1` + else + $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD + + m4_default([$4], [AC_MSG_ERROR( +[Package requirements ($2) were not met: + +$$1_PKG_ERRORS + +Consider adjusting the PKG_CONFIG_PATH environment variable if you +installed software in a non-standard prefix. + +_PKG_TEXT])[]dnl + ]) +elif test $pkg_failed = untried; then + AC_MSG_RESULT([no]) + m4_default([$4], [AC_MSG_FAILURE( +[The pkg-config script could not be found or is too old. Make sure it +is in your PATH or set the PKG_CONFIG environment variable to the full +path to pkg-config. + +_PKG_TEXT + +To get pkg-config, see .])[]dnl + ]) +else + $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS + $1[]_LIBS=$pkg_cv_[]$1[]_LIBS + AC_MSG_RESULT([yes]) + $3 +fi[]dnl +])dnl PKG_CHECK_MODULES + + +dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], +dnl [ACTION-IF-NOT-FOUND]) +dnl --------------------------------------------------------------------- +dnl Since: 0.29 +dnl +dnl Checks for existence of MODULES and gathers its build flags with +dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags +dnl and VARIABLE-PREFIX_LIBS from --libs. +dnl +dnl Note that if there is a possibility the first call to +dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to +dnl include an explicit call to PKG_PROG_PKG_CONFIG in your +dnl configure.ac. +AC_DEFUN([PKG_CHECK_MODULES_STATIC], +[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl +_save_PKG_CONFIG=$PKG_CONFIG +PKG_CONFIG="$PKG_CONFIG --static" +PKG_CHECK_MODULES($@) +PKG_CONFIG=$_save_PKG_CONFIG[]dnl +])dnl PKG_CHECK_MODULES_STATIC + + +dnl PKG_INSTALLDIR([DIRECTORY]) +dnl ------------------------- +dnl Since: 0.27 +dnl +dnl Substitutes the variable pkgconfigdir as the location where a module +dnl should install pkg-config .pc files. By default the directory is +dnl $libdir/pkgconfig, but the default can be changed by passing +dnl DIRECTORY. The user can override through the --with-pkgconfigdir +dnl parameter. +AC_DEFUN([PKG_INSTALLDIR], +[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])]) +m4_pushdef([pkg_description], + [pkg-config installation directory @<:@]pkg_default[@:>@]) +AC_ARG_WITH([pkgconfigdir], + [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],, + [with_pkgconfigdir=]pkg_default) +AC_SUBST([pkgconfigdir], [$with_pkgconfigdir]) +m4_popdef([pkg_default]) +m4_popdef([pkg_description]) +])dnl PKG_INSTALLDIR + + +dnl PKG_NOARCH_INSTALLDIR([DIRECTORY]) +dnl -------------------------------- +dnl Since: 0.27 +dnl +dnl Substitutes the variable noarch_pkgconfigdir as the location where a +dnl module should install arch-independent pkg-config .pc files. By +dnl default the directory is $datadir/pkgconfig, but the default can be +dnl changed by passing DIRECTORY. 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Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1998-1999 by Silicon Graphics. All rights reserved. + * Copyright (c) 1999 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +#include + +#ifdef GC_USE_ENTIRE_HEAP + int GC_use_entire_heap = TRUE; +#else + int GC_use_entire_heap = FALSE; +#endif + +/* + * Free heap blocks are kept on one of several free lists, + * depending on the size of the block. Each free list is doubly linked. + * Adjacent free blocks are coalesced. + */ + + +# define MAX_BLACK_LIST_ALLOC (2*HBLKSIZE) + /* largest block we will allocate starting on a black */ + /* listed block. Must be >= HBLKSIZE. */ + + +# define UNIQUE_THRESHOLD 32 + /* Sizes up to this many HBLKs each have their own free list */ +# define HUGE_THRESHOLD 256 + /* Sizes of at least this many heap blocks are mapped to a */ + /* single free list. */ +# define FL_COMPRESSION 8 + /* In between sizes map this many distinct sizes to a single */ + /* bin. */ + +# define N_HBLK_FLS ((HUGE_THRESHOLD - UNIQUE_THRESHOLD) / FL_COMPRESSION \ + + UNIQUE_THRESHOLD) + +#ifndef GC_GCJ_SUPPORT + STATIC +#endif + struct hblk * GC_hblkfreelist[N_HBLK_FLS+1] = { 0 }; + /* List of completely empty heap blocks */ + /* Linked through hb_next field of */ + /* header structure associated with */ + /* block. Remains externally visible */ + /* as used by GNU GCJ currently. */ + +#ifndef GC_GCJ_SUPPORT + STATIC +#endif + word GC_free_bytes[N_HBLK_FLS+1] = { 0 }; + /* Number of free bytes on each list. Remains visible to GCJ. */ + +/* Return the largest n such that the number of free bytes on lists */ +/* n .. N_HBLK_FLS is greater or equal to GC_max_large_allocd_bytes */ +/* minus GC_large_allocd_bytes. If there is no such n, return 0. */ +GC_INLINE int GC_enough_large_bytes_left(void) +{ + int n; + word bytes = GC_large_allocd_bytes; + + GC_ASSERT(GC_max_large_allocd_bytes <= GC_heapsize); + for (n = N_HBLK_FLS; n >= 0; --n) { + bytes += GC_free_bytes[n]; + if (bytes >= GC_max_large_allocd_bytes) return n; + } + return 0; +} + +/* Map a number of blocks to the appropriate large block free list index. */ +STATIC int GC_hblk_fl_from_blocks(word blocks_needed) +{ + if (blocks_needed <= UNIQUE_THRESHOLD) return (int)blocks_needed; + if (blocks_needed >= HUGE_THRESHOLD) return N_HBLK_FLS; + return (int)(blocks_needed - UNIQUE_THRESHOLD)/FL_COMPRESSION + + UNIQUE_THRESHOLD; + +} + +# define PHDR(hhdr) HDR((hhdr) -> hb_prev) +# define NHDR(hhdr) HDR((hhdr) -> hb_next) + +# ifdef USE_MUNMAP +# define IS_MAPPED(hhdr) (((hhdr) -> hb_flags & WAS_UNMAPPED) == 0) +# else +# define IS_MAPPED(hhdr) TRUE +# endif /* !USE_MUNMAP */ + +#if !defined(NO_DEBUGGING) || defined(GC_ASSERTIONS) + /* Should return the same value as GC_large_free_bytes. */ + GC_INNER word GC_compute_large_free_bytes(void) + { + word total_free = 0; + unsigned i; + + for (i = 0; i <= N_HBLK_FLS; ++i) { + struct hblk * h; + hdr * hhdr; + + for (h = GC_hblkfreelist[i]; h != 0; h = hhdr->hb_next) { + hhdr = HDR(h); + total_free += hhdr->hb_sz; + } + } + return total_free; + } +#endif /* !NO_DEBUGGING || GC_ASSERTIONS */ + +# if !defined(NO_DEBUGGING) +void GC_print_hblkfreelist(void) +{ + unsigned i; + word total; + + for (i = 0; i <= N_HBLK_FLS; ++i) { + struct hblk * h = GC_hblkfreelist[i]; + + if (0 != h) GC_printf("Free list %u (total size %lu):\n", + i, (unsigned long)GC_free_bytes[i]); + while (h != 0) { + hdr * hhdr = HDR(h); + + GC_printf("\t%p size %lu %s black listed\n", + (void *)h, (unsigned long) hhdr -> hb_sz, + GC_is_black_listed(h, HBLKSIZE) != 0 ? "start" : + GC_is_black_listed(h, hhdr -> hb_sz) != 0 ? "partially" : + "not"); + h = hhdr -> hb_next; + } + } + GC_printf("GC_large_free_bytes: %lu\n", + (unsigned long)GC_large_free_bytes); + + if ((total = GC_compute_large_free_bytes()) != GC_large_free_bytes) + GC_err_printf("GC_large_free_bytes INCONSISTENT!! Should be: %lu\n", + (unsigned long)total); +} + +/* Return the free list index on which the block described by the header */ +/* appears, or -1 if it appears nowhere. */ +static int free_list_index_of(hdr *wanted) +{ + int i; + + for (i = 0; i <= N_HBLK_FLS; ++i) { + struct hblk * h; + hdr * hhdr; + + for (h = GC_hblkfreelist[i]; h != 0; h = hhdr -> hb_next) { + hhdr = HDR(h); + if (hhdr == wanted) return i; + } + } + return -1; +} + +GC_API void GC_CALL GC_dump_regions(void) +{ + unsigned i; + + for (i = 0; i < GC_n_heap_sects; ++i) { + ptr_t start = GC_heap_sects[i].hs_start; + size_t bytes = GC_heap_sects[i].hs_bytes; + ptr_t end = start + bytes; + ptr_t p; + + /* Merge in contiguous sections. */ + while (i+1 < GC_n_heap_sects && GC_heap_sects[i+1].hs_start == end) { + ++i; + end = GC_heap_sects[i].hs_start + GC_heap_sects[i].hs_bytes; + } + GC_printf("***Section from %p to %p\n", (void *)start, (void *)end); + for (p = start; (word)p < (word)end; ) { + hdr *hhdr = HDR(p); + + if (IS_FORWARDING_ADDR_OR_NIL(hhdr)) { + GC_printf("\t%p Missing header!!(%p)\n", + (void *)p, (void *)hhdr); + p += HBLKSIZE; + continue; + } + if (HBLK_IS_FREE(hhdr)) { + int correct_index = GC_hblk_fl_from_blocks( + divHBLKSZ(hhdr -> hb_sz)); + int actual_index; + + GC_printf("\t%p\tfree block of size 0x%lx bytes%s\n", + (void *)p, (unsigned long)(hhdr -> hb_sz), + IS_MAPPED(hhdr) ? "" : " (unmapped)"); + actual_index = free_list_index_of(hhdr); + if (-1 == actual_index) { + GC_printf("\t\tBlock not on free list %d!!\n", + correct_index); + } else if (correct_index != actual_index) { + GC_printf("\t\tBlock on list %d, should be on %d!!\n", + actual_index, correct_index); + } + p += hhdr -> hb_sz; + } else { + GC_printf("\t%p\tused for blocks of size 0x%lx bytes\n", + (void *)p, (unsigned long)(hhdr -> hb_sz)); + p += HBLKSIZE * OBJ_SZ_TO_BLOCKS(hhdr -> hb_sz); + } + } + } +} + +# endif /* NO_DEBUGGING */ + +/* Initialize hdr for a block containing the indicated size and */ +/* kind of objects. */ +/* Return FALSE on failure. */ +static GC_bool setup_header(hdr * hhdr, struct hblk *block, size_t byte_sz, + int kind, unsigned flags) +{ + word descr; + +# ifdef MARK_BIT_PER_GRANULE + if (byte_sz > MAXOBJBYTES) + flags |= LARGE_BLOCK; +# endif +# ifdef ENABLE_DISCLAIM + if (GC_obj_kinds[kind].ok_disclaim_proc) + flags |= HAS_DISCLAIM; + if (GC_obj_kinds[kind].ok_mark_unconditionally) + flags |= MARK_UNCONDITIONALLY; +# endif + + /* Set size, kind and mark proc fields */ + hhdr -> hb_sz = byte_sz; + hhdr -> hb_obj_kind = (unsigned char)kind; + hhdr -> hb_flags = (unsigned char)flags; + hhdr -> hb_block = block; + descr = GC_obj_kinds[kind].ok_descriptor; + if (GC_obj_kinds[kind].ok_relocate_descr) descr += byte_sz; + hhdr -> hb_descr = descr; + +# ifdef MARK_BIT_PER_OBJ + /* Set hb_inv_sz as portably as possible. */ + /* We set it to the smallest value such that sz * inv_sz > 2**32 */ + /* This may be more precision than necessary. */ + if (byte_sz > MAXOBJBYTES) { + hhdr -> hb_inv_sz = LARGE_INV_SZ; + } else { + word inv_sz; + +# if CPP_WORDSZ == 64 + inv_sz = ((word)1 << 32)/byte_sz; + if (((inv_sz*byte_sz) >> 32) == 0) ++inv_sz; +# else /* 32 bit words */ + GC_ASSERT(byte_sz >= 4); + inv_sz = ((unsigned)1 << 31)/byte_sz; + inv_sz *= 2; + while (inv_sz*byte_sz > byte_sz) ++inv_sz; +# endif + hhdr -> hb_inv_sz = inv_sz; + } +# else /* MARK_BIT_PER_GRANULE */ + { + size_t granules = BYTES_TO_GRANULES(byte_sz); + + if (EXPECT(!GC_add_map_entry(granules), FALSE)) { + /* Make it look like a valid block. */ + hhdr -> hb_sz = HBLKSIZE; + hhdr -> hb_descr = 0; + hhdr -> hb_flags |= LARGE_BLOCK; + hhdr -> hb_map = 0; + return FALSE; + } + hhdr -> hb_map = GC_obj_map[(hhdr -> hb_flags & LARGE_BLOCK) != 0 ? + 0 : granules]; + } +# endif /* MARK_BIT_PER_GRANULE */ + + /* Clear mark bits */ + GC_clear_hdr_marks(hhdr); + + hhdr -> hb_last_reclaimed = (unsigned short)GC_gc_no; + return(TRUE); +} + +/* Remove hhdr from the free list (it is assumed to specified by index). */ +STATIC void GC_remove_from_fl_at(hdr *hhdr, int index) +{ + GC_ASSERT(((hhdr -> hb_sz) & (HBLKSIZE-1)) == 0); + if (hhdr -> hb_prev == 0) { + GC_ASSERT(HDR(GC_hblkfreelist[index]) == hhdr); + GC_hblkfreelist[index] = hhdr -> hb_next; + } else { + hdr *phdr; + GET_HDR(hhdr -> hb_prev, phdr); + phdr -> hb_next = hhdr -> hb_next; + } + /* We always need index to maintain free counts. */ + GC_ASSERT(GC_free_bytes[index] >= hhdr -> hb_sz); + GC_free_bytes[index] -= hhdr -> hb_sz; + if (0 != hhdr -> hb_next) { + hdr * nhdr; + GC_ASSERT(!IS_FORWARDING_ADDR_OR_NIL(NHDR(hhdr))); + GET_HDR(hhdr -> hb_next, nhdr); + nhdr -> hb_prev = hhdr -> hb_prev; + } +} + +/* Remove hhdr from the appropriate free list (we assume it is on the */ +/* size-appropriate free list). */ +GC_INLINE void GC_remove_from_fl(hdr *hhdr) +{ + GC_remove_from_fl_at(hhdr, GC_hblk_fl_from_blocks(divHBLKSZ(hhdr->hb_sz))); +} + +/* Return a pointer to the free block ending just before h, if any. */ +STATIC struct hblk * GC_free_block_ending_at(struct hblk *h) +{ + struct hblk * p = h - 1; + hdr * phdr; + + GET_HDR(p, phdr); + while (0 != phdr && IS_FORWARDING_ADDR_OR_NIL(phdr)) { + p = FORWARDED_ADDR(p,phdr); + phdr = HDR(p); + } + if (0 != phdr) { + if(HBLK_IS_FREE(phdr)) { + return p; + } else { + return 0; + } + } + p = GC_prev_block(h - 1); + if (0 != p) { + phdr = HDR(p); + if (HBLK_IS_FREE(phdr) && (ptr_t)p + phdr -> hb_sz == (ptr_t)h) { + return p; + } + } + return 0; +} + +/* Add hhdr to the appropriate free list. */ +/* We maintain individual free lists sorted by address. */ +STATIC void GC_add_to_fl(struct hblk *h, hdr *hhdr) +{ + int index = GC_hblk_fl_from_blocks(divHBLKSZ(hhdr -> hb_sz)); + struct hblk *second = GC_hblkfreelist[index]; +# if defined(GC_ASSERTIONS) && !defined(USE_MUNMAP) + struct hblk *next = (struct hblk *)((word)h + hhdr -> hb_sz); + hdr * nexthdr = HDR(next); + struct hblk *prev = GC_free_block_ending_at(h); + hdr * prevhdr = HDR(prev); + + GC_ASSERT(nexthdr == 0 || !HBLK_IS_FREE(nexthdr) + || (GC_heapsize & SIGNB) != 0); + /* In the last case, blocks may be too large to merge. */ + GC_ASSERT(prev == 0 || !HBLK_IS_FREE(prevhdr) + || (GC_heapsize & SIGNB) != 0); +# endif + GC_ASSERT(((hhdr -> hb_sz) & (HBLKSIZE-1)) == 0); + GC_hblkfreelist[index] = h; + GC_free_bytes[index] += hhdr -> hb_sz; + GC_ASSERT(GC_free_bytes[index] <= GC_large_free_bytes); + hhdr -> hb_next = second; + hhdr -> hb_prev = 0; + if (0 != second) { + hdr * second_hdr; + + GET_HDR(second, second_hdr); + second_hdr -> hb_prev = h; + } + hhdr -> hb_flags |= FREE_BLK; +} + +#ifdef USE_MUNMAP + +# ifndef MUNMAP_THRESHOLD +# define MUNMAP_THRESHOLD 6 +# endif + +GC_INNER int GC_unmap_threshold = MUNMAP_THRESHOLD; + +/* Unmap blocks that haven't been recently touched. This is the only way */ +/* way blocks are ever unmapped. */ +GC_INNER void GC_unmap_old(void) +{ + int i; + + if (GC_unmap_threshold == 0) + return; /* unmapping disabled */ + + for (i = 0; i <= N_HBLK_FLS; ++i) { + struct hblk * h; + hdr * hhdr; + + for (h = GC_hblkfreelist[i]; 0 != h; h = hhdr -> hb_next) { + hhdr = HDR(h); + if (!IS_MAPPED(hhdr)) continue; + + /* Check that the interval is larger than the threshold (the */ + /* truncated counter value wrapping is handled correctly). */ + if ((unsigned short)(GC_gc_no - hhdr->hb_last_reclaimed) > + (unsigned short)GC_unmap_threshold) { + GC_unmap((ptr_t)h, hhdr -> hb_sz); + hhdr -> hb_flags |= WAS_UNMAPPED; + } + } + } +} + +/* Merge all unmapped blocks that are adjacent to other free */ +/* blocks. This may involve remapping, since all blocks are either */ +/* fully mapped or fully unmapped. */ +GC_INNER void GC_merge_unmapped(void) +{ + int i; + + for (i = 0; i <= N_HBLK_FLS; ++i) { + struct hblk *h = GC_hblkfreelist[i]; + + while (h != 0) { + struct hblk *next; + hdr *hhdr, *nexthdr; + word size, nextsize; + + GET_HDR(h, hhdr); + size = hhdr->hb_sz; + next = (struct hblk *)((word)h + size); + GET_HDR(next, nexthdr); + /* Coalesce with successor, if possible */ + if (0 != nexthdr && HBLK_IS_FREE(nexthdr) + && (signed_word) (size + (nextsize = nexthdr->hb_sz)) > 0 + /* no pot. overflow */) { + /* Note that we usually try to avoid adjacent free blocks */ + /* that are either both mapped or both unmapped. But that */ + /* isn't guaranteed to hold since we remap blocks when we */ + /* split them, and don't merge at that point. It may also */ + /* not hold if the merged block would be too big. */ + if (IS_MAPPED(hhdr) && !IS_MAPPED(nexthdr)) { + /* make both consistent, so that we can merge */ + if (size > nextsize) { + GC_remap((ptr_t)next, nextsize); + } else { + GC_unmap((ptr_t)h, size); + GC_unmap_gap((ptr_t)h, size, (ptr_t)next, nextsize); + hhdr -> hb_flags |= WAS_UNMAPPED; + } + } else if (IS_MAPPED(nexthdr) && !IS_MAPPED(hhdr)) { + if (size > nextsize) { + GC_unmap((ptr_t)next, nextsize); + GC_unmap_gap((ptr_t)h, size, (ptr_t)next, nextsize); + } else { + GC_remap((ptr_t)h, size); + hhdr -> hb_flags &= ~WAS_UNMAPPED; + hhdr -> hb_last_reclaimed = nexthdr -> hb_last_reclaimed; + } + } else if (!IS_MAPPED(hhdr) && !IS_MAPPED(nexthdr)) { + /* Unmap any gap in the middle */ + GC_unmap_gap((ptr_t)h, size, (ptr_t)next, nextsize); + } + /* If they are both unmapped, we merge, but leave unmapped. */ + GC_remove_from_fl_at(hhdr, i); + GC_remove_from_fl(nexthdr); + hhdr -> hb_sz += nexthdr -> hb_sz; + GC_remove_header(next); + GC_add_to_fl(h, hhdr); + /* Start over at beginning of list */ + h = GC_hblkfreelist[i]; + } else /* not mergable with successor */ { + h = hhdr -> hb_next; + } + } /* while (h != 0) ... */ + } /* for ... */ +} + +#endif /* USE_MUNMAP */ + +/* + * Return a pointer to a block starting at h of length bytes. + * Memory for the block is mapped. + * Remove the block from its free list, and return the remainder (if any) + * to its appropriate free list. + * May fail by returning 0. + * The header for the returned block must be set up by the caller. + * If the return value is not 0, then hhdr is the header for it. + */ +STATIC struct hblk * GC_get_first_part(struct hblk *h, hdr *hhdr, + size_t bytes, int index) +{ + word total_size = hhdr -> hb_sz; + struct hblk * rest; + hdr * rest_hdr; + + GC_ASSERT((total_size & (HBLKSIZE-1)) == 0); + GC_remove_from_fl_at(hhdr, index); + if (total_size == bytes) return h; + rest = (struct hblk *)((word)h + bytes); + rest_hdr = GC_install_header(rest); + if (0 == rest_hdr) { + /* FIXME: This is likely to be very bad news ... */ + WARN("Header allocation failed: dropping block\n", 0); + return(0); + } + rest_hdr -> hb_sz = total_size - bytes; + rest_hdr -> hb_flags = 0; +# ifdef GC_ASSERTIONS + /* Mark h not free, to avoid assertion about adjacent free blocks. */ + hhdr -> hb_flags &= ~FREE_BLK; +# endif + GC_add_to_fl(rest, rest_hdr); + return h; +} + +/* + * H is a free block. N points at an address inside it. + * A new header for n has already been set up. Fix up h's header + * to reflect the fact that it is being split, move it to the + * appropriate free list. + * N replaces h in the original free list. + * + * Nhdr is not completely filled in, since it is about to allocated. + * It may in fact end up on the wrong free list for its size. + * That's not a disaster, since n is about to be allocated + * by our caller. + * (Hence adding it to a free list is silly. But this path is hopefully + * rare enough that it doesn't matter. The code is cleaner this way.) + */ +STATIC void GC_split_block(struct hblk *h, hdr *hhdr, struct hblk *n, + hdr *nhdr, int index /* Index of free list */) +{ + word total_size = hhdr -> hb_sz; + word h_size = (word)n - (word)h; + struct hblk *prev = hhdr -> hb_prev; + struct hblk *next = hhdr -> hb_next; + + /* Replace h with n on its freelist */ + nhdr -> hb_prev = prev; + nhdr -> hb_next = next; + nhdr -> hb_sz = total_size - h_size; + nhdr -> hb_flags = 0; + if (0 != prev) { + HDR(prev) -> hb_next = n; + } else { + GC_hblkfreelist[index] = n; + } + if (0 != next) { + HDR(next) -> hb_prev = n; + } + GC_ASSERT(GC_free_bytes[index] > h_size); + GC_free_bytes[index] -= h_size; +# ifdef USE_MUNMAP + hhdr -> hb_last_reclaimed = (unsigned short)GC_gc_no; +# endif + hhdr -> hb_sz = h_size; + GC_add_to_fl(h, hhdr); + nhdr -> hb_flags |= FREE_BLK; +} + +STATIC struct hblk * +GC_allochblk_nth(size_t sz /* bytes */, int kind, unsigned flags, int n, + int may_split); +#define AVOID_SPLIT_REMAPPED 2 + +/* + * Allocate (and return pointer to) a heap block + * for objects of size sz bytes, searching the nth free list. + * + * NOTE: We set obj_map field in header correctly. + * Caller is responsible for building an object freelist in block. + * + * The client is responsible for clearing the block, if necessary. + */ +GC_INNER struct hblk * +GC_allochblk(size_t sz, int kind, unsigned flags/* IGNORE_OFF_PAGE or 0 */) +{ + word blocks; + int start_list; + struct hblk *result; + int may_split; + int split_limit; /* Highest index of free list whose blocks we */ + /* split. */ + + GC_ASSERT((sz & (GRANULE_BYTES - 1)) == 0); + blocks = OBJ_SZ_TO_BLOCKS_CHECKED(sz); + if ((signed_word)(blocks * HBLKSIZE) < 0) { + return 0; + } + start_list = GC_hblk_fl_from_blocks(blocks); + /* Try for an exact match first. */ + result = GC_allochblk_nth(sz, kind, flags, start_list, FALSE); + if (0 != result) return result; + + may_split = TRUE; + if (GC_use_entire_heap || GC_dont_gc + || USED_HEAP_SIZE < GC_requested_heapsize + || GC_incremental || !GC_should_collect()) { + /* Should use more of the heap, even if it requires splitting. */ + split_limit = N_HBLK_FLS; + } else if (GC_finalizer_bytes_freed > (GC_heapsize >> 4)) { + /* If we are deallocating lots of memory from */ + /* finalizers, fail and collect sooner rather */ + /* than later. */ + split_limit = 0; + } else { + /* If we have enough large blocks left to cover any */ + /* previous request for large blocks, we go ahead */ + /* and split. Assuming a steady state, that should */ + /* be safe. It means that we can use the full */ + /* heap if we allocate only small objects. */ + split_limit = GC_enough_large_bytes_left(); +# ifdef USE_MUNMAP + if (split_limit > 0) + may_split = AVOID_SPLIT_REMAPPED; +# endif + } + if (start_list < UNIQUE_THRESHOLD) { + /* No reason to try start_list again, since all blocks are exact */ + /* matches. */ + ++start_list; + } + for (; start_list <= split_limit; ++start_list) { + result = GC_allochblk_nth(sz, kind, flags, start_list, may_split); + if (0 != result) + break; + } + return result; +} + +STATIC long GC_large_alloc_warn_suppressed = 0; + /* Number of warnings suppressed so far. */ + +/* The same, but with search restricted to nth free list. Flags is */ +/* IGNORE_OFF_PAGE or zero. sz is in bytes. The may_split flag */ +/* indicates whether it is OK to split larger blocks (if set to */ +/* AVOID_SPLIT_REMAPPED then memory remapping followed by splitting */ +/* should be generally avoided). */ +STATIC struct hblk * +GC_allochblk_nth(size_t sz, int kind, unsigned flags, int n, int may_split) +{ + struct hblk *hbp; + hdr * hhdr; /* Header corr. to hbp */ + struct hblk *thishbp; + hdr * thishdr; /* Header corr. to thishbp */ + signed_word size_needed = HBLKSIZE * OBJ_SZ_TO_BLOCKS_CHECKED(sz); + /* number of bytes in requested objects */ + + /* search for a big enough block in free list */ + for (hbp = GC_hblkfreelist[n];; hbp = hhdr -> hb_next) { + signed_word size_avail; /* bytes available in this block */ + + if (NULL == hbp) return NULL; + GET_HDR(hbp, hhdr); /* set hhdr value */ + size_avail = hhdr->hb_sz; + if (size_avail < size_needed) continue; + if (size_avail != size_needed) { + if (!may_split) continue; + /* If the next heap block is obviously better, go on. */ + /* This prevents us from disassembling a single large */ + /* block to get tiny blocks. */ + thishbp = hhdr -> hb_next; + if (thishbp != 0) { + signed_word next_size; + + GET_HDR(thishbp, thishdr); + next_size = (signed_word)(thishdr -> hb_sz); + if (next_size < size_avail + && next_size >= size_needed + && !GC_is_black_listed(thishbp, (word)size_needed)) { + continue; + } + } + } + if (!IS_UNCOLLECTABLE(kind) && (kind != PTRFREE + || size_needed > (signed_word)MAX_BLACK_LIST_ALLOC)) { + struct hblk * lasthbp = hbp; + ptr_t search_end = (ptr_t)hbp + size_avail - size_needed; + signed_word orig_avail = size_avail; + signed_word eff_size_needed = (flags & IGNORE_OFF_PAGE) != 0 ? + (signed_word)HBLKSIZE + : size_needed; + + while ((word)lasthbp <= (word)search_end + && (thishbp = GC_is_black_listed(lasthbp, + (word)eff_size_needed)) != 0) { + lasthbp = thishbp; + } + size_avail -= (ptr_t)lasthbp - (ptr_t)hbp; + thishbp = lasthbp; + if (size_avail >= size_needed) { + if (thishbp != hbp) { +# ifdef USE_MUNMAP + /* Avoid remapping followed by splitting. */ + if (may_split == AVOID_SPLIT_REMAPPED && !IS_MAPPED(hhdr)) + continue; +# endif + thishdr = GC_install_header(thishbp); + if (0 != thishdr) { + /* Make sure it's mapped before we mangle it. */ +# ifdef USE_MUNMAP + if (!IS_MAPPED(hhdr)) { + GC_remap((ptr_t)hbp, hhdr -> hb_sz); + hhdr -> hb_flags &= ~WAS_UNMAPPED; + } +# endif + /* Split the block at thishbp */ + GC_split_block(hbp, hhdr, thishbp, thishdr, n); + /* Advance to thishbp */ + hbp = thishbp; + hhdr = thishdr; + /* We must now allocate thishbp, since it may */ + /* be on the wrong free list. */ + } + } + } else if (size_needed > (signed_word)BL_LIMIT + && orig_avail - size_needed + > (signed_word)BL_LIMIT) { + /* Punt, since anything else risks unreasonable heap growth. */ + if (++GC_large_alloc_warn_suppressed + >= GC_large_alloc_warn_interval) { + WARN("Repeated allocation of very large block " + "(appr. size %" WARN_PRIdPTR "):\n" + "\tMay lead to memory leak and poor performance\n", + size_needed); + GC_large_alloc_warn_suppressed = 0; + } + size_avail = orig_avail; + } else if (size_avail == 0 && size_needed == HBLKSIZE + && IS_MAPPED(hhdr)) { + if (!GC_find_leak) { + static unsigned count = 0; + + /* The block is completely blacklisted. We need */ + /* to drop some such blocks, since otherwise we spend */ + /* all our time traversing them if pointer-free */ + /* blocks are unpopular. */ + /* A dropped block will be reconsidered at next GC. */ + if ((++count & 3) == 0) { + /* Allocate and drop the block in small chunks, to */ + /* maximize the chance that we will recover some */ + /* later. */ + word total_size = hhdr -> hb_sz; + struct hblk * limit = hbp + divHBLKSZ(total_size); + struct hblk * h; + struct hblk * prev = hhdr -> hb_prev; + + GC_large_free_bytes -= total_size; + GC_bytes_dropped += total_size; + GC_remove_from_fl_at(hhdr, n); + for (h = hbp; (word)h < (word)limit; h++) { + if (h != hbp) { + hhdr = GC_install_header(h); + } + if (NULL != hhdr) { + (void)setup_header(hhdr, h, HBLKSIZE, PTRFREE, 0); + /* Can't fail. */ + if (GC_debugging_started) { + BZERO(h, HBLKSIZE); + } + } + } + /* Restore hbp to point at free block */ + hbp = prev; + if (0 == hbp) { + return GC_allochblk_nth(sz, kind, flags, n, may_split); + } + hhdr = HDR(hbp); + } + } + } + } + if( size_avail >= size_needed ) { +# ifdef USE_MUNMAP + if (!IS_MAPPED(hhdr)) { + GC_remap((ptr_t)hbp, hhdr -> hb_sz); + hhdr -> hb_flags &= ~WAS_UNMAPPED; + /* Note: This may leave adjacent, mapped free blocks. */ + } +# endif + /* hbp may be on the wrong freelist; the parameter n */ + /* is important. */ + hbp = GC_get_first_part(hbp, hhdr, size_needed, n); + break; + } + } + + if (0 == hbp) return 0; + + /* Add it to map of valid blocks */ + if (!GC_install_counts(hbp, (word)size_needed)) return(0); + /* This leaks memory under very rare conditions. */ + + /* Set up header */ + if (!setup_header(hhdr, hbp, sz, kind, flags)) { + GC_remove_counts(hbp, (word)size_needed); + return(0); /* ditto */ + } +# ifndef GC_DISABLE_INCREMENTAL + /* Notify virtual dirty bit implementation that we are about to */ + /* write. Ensure that pointer-free objects are not protected */ + /* if it is avoidable. This also ensures that newly allocated */ + /* blocks are treated as dirty. Necessary since we don't */ + /* protect free blocks. */ + GC_ASSERT((size_needed & (HBLKSIZE-1)) == 0); + GC_remove_protection(hbp, divHBLKSZ(size_needed), + (hhdr -> hb_descr == 0) /* pointer-free */); +# endif + /* We just successfully allocated a block. Restart count of */ + /* consecutive failures. */ + GC_fail_count = 0; + + GC_large_free_bytes -= size_needed; + GC_ASSERT(IS_MAPPED(hhdr)); + return( hbp ); +} + +/* + * Free a heap block. + * + * Coalesce the block with its neighbors if possible. + * + * All mark words are assumed to be cleared. + */ +GC_INNER void GC_freehblk(struct hblk *hbp) +{ + struct hblk *next, *prev; + hdr *hhdr, *prevhdr, *nexthdr; + word size; + + GET_HDR(hbp, hhdr); + size = HBLKSIZE * OBJ_SZ_TO_BLOCKS(hhdr->hb_sz); + if ((signed_word)size <= 0) + ABORT("Deallocating excessively large block. Too large an allocation?"); + /* Probably possible if we try to allocate more than half the address */ + /* space at once. If we don't catch it here, strange things happen */ + /* later. */ + GC_remove_counts(hbp, size); + hhdr->hb_sz = size; +# ifdef USE_MUNMAP + hhdr -> hb_last_reclaimed = (unsigned short)GC_gc_no; +# endif + + /* Check for duplicate deallocation in the easy case */ + if (HBLK_IS_FREE(hhdr)) { + ABORT_ARG1("Duplicate large block deallocation", + " of %p", (void *)hbp); + } + + GC_ASSERT(IS_MAPPED(hhdr)); + hhdr -> hb_flags |= FREE_BLK; + next = (struct hblk *)((ptr_t)hbp + size); + GET_HDR(next, nexthdr); + prev = GC_free_block_ending_at(hbp); + /* Coalesce with successor, if possible */ + if(0 != nexthdr && HBLK_IS_FREE(nexthdr) && IS_MAPPED(nexthdr) + && (signed_word)(hhdr -> hb_sz + nexthdr -> hb_sz) > 0 + /* no overflow */) { + GC_remove_from_fl(nexthdr); + hhdr -> hb_sz += nexthdr -> hb_sz; + GC_remove_header(next); + } + /* Coalesce with predecessor, if possible. */ + if (0 != prev) { + prevhdr = HDR(prev); + if (IS_MAPPED(prevhdr) + && (signed_word)(hhdr -> hb_sz + prevhdr -> hb_sz) > 0) { + GC_remove_from_fl(prevhdr); + prevhdr -> hb_sz += hhdr -> hb_sz; +# ifdef USE_MUNMAP + prevhdr -> hb_last_reclaimed = (unsigned short)GC_gc_no; +# endif + GC_remove_header(hbp); + hbp = prev; + hhdr = prevhdr; + } + } + /* FIXME: It is not clear we really always want to do these merges */ + /* with USE_MUNMAP, since it updates ages and hence prevents */ + /* unmapping. */ + + GC_large_free_bytes += size; + GC_add_to_fl(hbp, hhdr); +} diff --git a/alloc.c b/alloc.c new file mode 100644 index 0000000..0f11ea0 --- /dev/null +++ b/alloc.c @@ -0,0 +1,1457 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1996 by Xerox Corporation. All rights reserved. + * Copyright (c) 1998 by Silicon Graphics. All rights reserved. + * Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +#include "private/gc_priv.h" + +#include +#if !defined(MACOS) && !defined(MSWINCE) +# include +# if !defined(__CC_ARM) +# include +# endif +#endif + +/* + * Separate free lists are maintained for different sized objects + * up to MAXOBJBYTES. + * The call GC_allocobj(i,k) ensures that the freelist for + * kind k objects of size i points to a non-empty + * free list. It returns a pointer to the first entry on the free list. + * In a single-threaded world, GC_allocobj may be called to allocate + * an object of (small) size lb as follows: + * + * lg = GC_size_map[lb]; + * op = GC_objfreelist[lg]; + * if (NULL == op) { + * op = GENERAL_MALLOC(lb, NORMAL); + * } else { + * GC_objfreelist[lg] = obj_link(op); + * } + * + * Note that this is very fast if the free list is non-empty; it should + * only involve the execution of 4 or 5 simple instructions. + * All composite objects on freelists are cleared, except for + * their first word. + */ + +/* + * The allocator uses GC_allochblk to allocate large chunks of objects. + * These chunks all start on addresses which are multiples of + * HBLKSZ. Each allocated chunk has an associated header, + * which can be located quickly based on the address of the chunk. + * (See headers.c for details.) + * This makes it possible to check quickly whether an + * arbitrary address corresponds to an object administered by the + * allocator. + */ + +word GC_non_gc_bytes = 0; /* Number of bytes not intended to be collected */ + +word GC_gc_no = 0; + +#ifndef GC_DISABLE_INCREMENTAL + GC_INNER GC_bool GC_incremental = FALSE; /* By default, stop the world. */ +#endif + +#ifdef THREADS + int GC_parallel = FALSE; /* By default, parallel GC is off. */ +#endif + +#if defined(GC_FULL_FREQ) && !defined(CPPCHECK) + int GC_full_freq = GC_FULL_FREQ; +#else + int GC_full_freq = 19; /* Every 20th collection is a full */ + /* collection, whether we need it */ + /* or not. */ +#endif + +STATIC GC_bool GC_need_full_gc = FALSE; + /* Need full GC do to heap growth. */ + +#ifdef THREAD_LOCAL_ALLOC + GC_INNER GC_bool GC_world_stopped = FALSE; +#endif + +STATIC word GC_used_heap_size_after_full = 0; + +/* GC_copyright symbol is externally visible. */ +char * const GC_copyright[] = +{"Copyright 1988,1989 Hans-J. Boehm and Alan J. Demers ", +"Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. ", +"Copyright (c) 1996-1998 by Silicon Graphics. All rights reserved. ", +"Copyright (c) 1999-2009 by Hewlett-Packard Company. All rights reserved. ", +"THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY", +" EXPRESSED OR IMPLIED. ANY USE IS AT YOUR OWN RISK.", +"See source code for details." }; + +/* Version macros are now defined in gc_version.h, which is included by */ +/* gc.h, which is included by gc_priv.h. */ +#ifndef GC_NO_VERSION_VAR + const unsigned GC_version = ((GC_VERSION_MAJOR << 16) | + (GC_VERSION_MINOR << 8) | GC_VERSION_MICRO); +#endif + +GC_API unsigned GC_CALL GC_get_version(void) +{ + return (GC_VERSION_MAJOR << 16) | (GC_VERSION_MINOR << 8) | + GC_VERSION_MICRO; +} + +/* some more variables */ + +#ifdef GC_DONT_EXPAND + int GC_dont_expand = TRUE; +#else + int GC_dont_expand = FALSE; +#endif + +#if defined(GC_FREE_SPACE_DIVISOR) && !defined(CPPCHECK) + word GC_free_space_divisor = GC_FREE_SPACE_DIVISOR; /* must be > 0 */ +#else + word GC_free_space_divisor = 3; +#endif + +GC_INNER int GC_CALLBACK GC_never_stop_func(void) +{ + return(0); +} + +#if defined(GC_TIME_LIMIT) && !defined(CPPCHECK) + unsigned long GC_time_limit = GC_TIME_LIMIT; + /* We try to keep pause times from exceeding */ + /* this by much. In milliseconds. */ +#else + unsigned long GC_time_limit = 50; +#endif + +#ifndef NO_CLOCK + STATIC CLOCK_TYPE GC_start_time = 0; + /* Time at which we stopped world. */ + /* used only in GC_timeout_stop_func. */ +#endif + +STATIC int GC_n_attempts = 0; /* Number of attempts at finishing */ + /* collection within GC_time_limit. */ + +STATIC GC_stop_func GC_default_stop_func = GC_never_stop_func; + /* accessed holding the lock. */ + +GC_API void GC_CALL GC_set_stop_func(GC_stop_func stop_func) +{ + DCL_LOCK_STATE; + GC_ASSERT(NONNULL_ARG_NOT_NULL(stop_func)); + LOCK(); + GC_default_stop_func = stop_func; + UNLOCK(); +} + +GC_API GC_stop_func GC_CALL GC_get_stop_func(void) +{ + GC_stop_func stop_func; + DCL_LOCK_STATE; + LOCK(); + stop_func = GC_default_stop_func; + UNLOCK(); + return stop_func; +} + +#if defined(GC_DISABLE_INCREMENTAL) || defined(NO_CLOCK) +# define GC_timeout_stop_func GC_default_stop_func +#else + STATIC int GC_CALLBACK GC_timeout_stop_func (void) + { + CLOCK_TYPE current_time; + static unsigned count = 0; + unsigned long time_diff; + + if ((*GC_default_stop_func)()) + return(1); + + if ((count++ & 3) != 0) return(0); + GET_TIME(current_time); + time_diff = MS_TIME_DIFF(current_time,GC_start_time); + if (time_diff >= GC_time_limit) { + GC_COND_LOG_PRINTF( + "Abandoning stopped marking after %lu msecs (attempt %d)\n", + time_diff, GC_n_attempts); + return(1); + } + return(0); + } +#endif /* !GC_DISABLE_INCREMENTAL */ + +#ifdef THREADS + GC_INNER word GC_total_stacksize = 0; /* updated on every push_all_stacks */ +#endif + +/* Return the minimum number of bytes that must be allocated between */ +/* collections to amortize the collection cost. Should be non-zero. */ +static word min_bytes_allocd(void) +{ + word result; + word stack_size; + word total_root_size; /* includes double stack size, */ + /* since the stack is expensive */ + /* to scan. */ + word scan_size; /* Estimate of memory to be scanned */ + /* during normal GC. */ + +# ifdef THREADS + if (GC_need_to_lock) { + /* We are multi-threaded... */ + stack_size = GC_total_stacksize; + /* For now, we just use the value computed during the latest GC. */ +# ifdef DEBUG_THREADS + GC_log_printf("Total stacks size: %lu\n", + (unsigned long)stack_size); +# endif + } else +# endif + /* else*/ { +# ifdef STACK_NOT_SCANNED + stack_size = 0; +# elif defined(STACK_GROWS_UP) + stack_size = GC_approx_sp() - GC_stackbottom; +# else + stack_size = GC_stackbottom - GC_approx_sp(); +# endif + } + + total_root_size = 2 * stack_size + GC_root_size; + scan_size = 2 * GC_composite_in_use + GC_atomic_in_use / 4 + + total_root_size; + result = scan_size / GC_free_space_divisor; + if (GC_incremental) { + result /= 2; + } + return result > 0 ? result : 1; +} + +STATIC word GC_non_gc_bytes_at_gc = 0; + /* Number of explicitly managed bytes of storage */ + /* at last collection. */ + +/* Return the number of bytes allocated, adjusted for explicit storage */ +/* management, etc.. This number is used in deciding when to trigger */ +/* collections. */ +STATIC word GC_adj_bytes_allocd(void) +{ + signed_word result; + signed_word expl_managed = (signed_word)GC_non_gc_bytes + - (signed_word)GC_non_gc_bytes_at_gc; + + /* Don't count what was explicitly freed, or newly allocated for */ + /* explicit management. Note that deallocating an explicitly */ + /* managed object should not alter result, assuming the client */ + /* is playing by the rules. */ + result = (signed_word)GC_bytes_allocd + + (signed_word)GC_bytes_dropped + - (signed_word)GC_bytes_freed + + (signed_word)GC_finalizer_bytes_freed + - expl_managed; + if (result > (signed_word)GC_bytes_allocd) { + result = GC_bytes_allocd; + /* probably client bug or unfortunate scheduling */ + } + result += GC_bytes_finalized; + /* We count objects enqueued for finalization as though they */ + /* had been reallocated this round. Finalization is user */ + /* visible progress. And if we don't count this, we have */ + /* stability problems for programs that finalize all objects. */ + if (result < (signed_word)(GC_bytes_allocd >> 3)) { + /* Always count at least 1/8 of the allocations. We don't want */ + /* to collect too infrequently, since that would inhibit */ + /* coalescing of free storage blocks. */ + /* This also makes us partially robust against client bugs. */ + return(GC_bytes_allocd >> 3); + } else { + return(result); + } +} + + +/* Clear up a few frames worth of garbage left at the top of the stack. */ +/* This is used to prevent us from accidentally treating garbage left */ +/* on the stack by other parts of the collector as roots. This */ +/* differs from the code in misc.c, which actually tries to keep the */ +/* stack clear of long-lived, client-generated garbage. */ +STATIC void GC_clear_a_few_frames(void) +{ +# ifndef CLEAR_NWORDS +# define CLEAR_NWORDS 64 +# endif + volatile word frames[CLEAR_NWORDS]; + BZERO((word *)frames, CLEAR_NWORDS * sizeof(word)); +} + +/* Heap size at which we need a collection to avoid expanding past */ +/* limits used by blacklisting. */ +STATIC word GC_collect_at_heapsize = (word)(-1); + +/* Have we allocated enough to amortize a collection? */ +GC_INNER GC_bool GC_should_collect(void) +{ + static word last_min_bytes_allocd; + static word last_gc_no; + if (last_gc_no != GC_gc_no) { + last_gc_no = GC_gc_no; + last_min_bytes_allocd = min_bytes_allocd(); + } + return(GC_adj_bytes_allocd() >= last_min_bytes_allocd + || GC_heapsize >= GC_collect_at_heapsize); +} + +/* STATIC */ GC_start_callback_proc GC_start_call_back = 0; + /* Called at start of full collections. */ + /* Not called if 0. Called with the allocation */ + /* lock held. Not used by GC itself. */ + +GC_API void GC_CALL GC_set_start_callback(GC_start_callback_proc fn) +{ + DCL_LOCK_STATE; + LOCK(); + GC_start_call_back = fn; + UNLOCK(); +} + +GC_API GC_start_callback_proc GC_CALL GC_get_start_callback(void) +{ + GC_start_callback_proc fn; + DCL_LOCK_STATE; + LOCK(); + fn = GC_start_call_back; + UNLOCK(); + return fn; +} + +GC_INLINE void GC_notify_full_gc(void) +{ + if (GC_start_call_back != 0) { + (*GC_start_call_back)(); + } +} + +STATIC GC_bool GC_is_full_gc = FALSE; + +STATIC GC_bool GC_stopped_mark(GC_stop_func stop_func); +STATIC void GC_finish_collection(void); + +/* + * Initiate a garbage collection if appropriate. + * Choose judiciously + * between partial, full, and stop-world collections. + */ +STATIC void GC_maybe_gc(void) +{ + GC_ASSERT(I_HOLD_LOCK()); + ASSERT_CANCEL_DISABLED(); + if (GC_should_collect()) { + static int n_partial_gcs = 0; + + if (!GC_incremental) { + /* FIXME: If possible, GC_default_stop_func should be used here */ + GC_try_to_collect_inner(GC_never_stop_func); + n_partial_gcs = 0; + return; + } else { +# ifdef PARALLEL_MARK + if (GC_parallel) + GC_wait_for_reclaim(); +# endif + if (GC_need_full_gc || n_partial_gcs >= GC_full_freq) { + GC_COND_LOG_PRINTF( + "***>Full mark for collection #%lu after %lu allocd bytes\n", + (unsigned long)GC_gc_no + 1, (unsigned long)GC_bytes_allocd); + GC_promote_black_lists(); + (void)GC_reclaim_all((GC_stop_func)0, TRUE); + GC_notify_full_gc(); + GC_clear_marks(); + n_partial_gcs = 0; + GC_is_full_gc = TRUE; + } else { + n_partial_gcs++; + } + } + /* We try to mark with the world stopped. */ + /* If we run out of time, this turns into */ + /* incremental marking. */ +# ifndef NO_CLOCK + if (GC_time_limit != GC_TIME_UNLIMITED) { GET_TIME(GC_start_time); } +# endif + /* FIXME: If possible, GC_default_stop_func should be */ + /* used instead of GC_never_stop_func here. */ + if (GC_stopped_mark(GC_time_limit == GC_TIME_UNLIMITED? + GC_never_stop_func : GC_timeout_stop_func)) { +# ifdef SAVE_CALL_CHAIN + GC_save_callers(GC_last_stack); +# endif + GC_finish_collection(); + } else { + if (!GC_is_full_gc) { + /* Count this as the first attempt */ + GC_n_attempts++; + } + } + } +} + +STATIC GC_on_collection_event_proc GC_on_collection_event = 0; + +GC_API void GC_CALL GC_set_on_collection_event(GC_on_collection_event_proc fn) +{ + /* fn may be 0 (means no event notifier). */ + DCL_LOCK_STATE; + LOCK(); + GC_on_collection_event = fn; + UNLOCK(); +} + +GC_API GC_on_collection_event_proc GC_CALL GC_get_on_collection_event(void) +{ + GC_on_collection_event_proc fn; + DCL_LOCK_STATE; + LOCK(); + fn = GC_on_collection_event; + UNLOCK(); + return fn; +} + +/* Stop the world garbage collection. If stop_func is not */ +/* GC_never_stop_func then abort if stop_func returns TRUE. */ +/* Return TRUE if we successfully completed the collection. */ +GC_INNER GC_bool GC_try_to_collect_inner(GC_stop_func stop_func) +{ +# ifndef SMALL_CONFIG + CLOCK_TYPE start_time = 0; /* initialized to prevent warning. */ +# endif + + ASSERT_CANCEL_DISABLED(); + GC_ASSERT(I_HOLD_LOCK()); + if (GC_dont_gc || (*stop_func)()) return FALSE; + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_START); + if (GC_incremental && GC_collection_in_progress()) { + GC_COND_LOG_PRINTF( + "GC_try_to_collect_inner: finishing collection in progress\n"); + /* Just finish collection already in progress. */ + while(GC_collection_in_progress()) { + if ((*stop_func)()) { + /* TODO: Notify GC_EVENT_ABANDON */ + return(FALSE); + } + GC_collect_a_little_inner(1); + } + } + GC_notify_full_gc(); +# ifndef SMALL_CONFIG + if (GC_print_stats) { + GET_TIME(start_time); + GC_log_printf("Initiating full world-stop collection!\n"); + } +# endif + GC_promote_black_lists(); + /* Make sure all blocks have been reclaimed, so sweep routines */ + /* don't see cleared mark bits. */ + /* If we're guaranteed to finish, then this is unnecessary. */ + /* In the find_leak case, we have to finish to guarantee that */ + /* previously unmarked objects are not reported as leaks. */ +# ifdef PARALLEL_MARK + if (GC_parallel) + GC_wait_for_reclaim(); +# endif + if ((GC_find_leak || stop_func != GC_never_stop_func) + && !GC_reclaim_all(stop_func, FALSE)) { + /* Aborted. So far everything is still consistent. */ + /* TODO: Notify GC_EVENT_ABANDON */ + return(FALSE); + } + GC_invalidate_mark_state(); /* Flush mark stack. */ + GC_clear_marks(); +# ifdef SAVE_CALL_CHAIN + GC_save_callers(GC_last_stack); +# endif + GC_is_full_gc = TRUE; + if (!GC_stopped_mark(stop_func)) { + if (!GC_incremental) { + /* We're partially done and have no way to complete or use */ + /* current work. Reestablish invariants as cheaply as */ + /* possible. */ + GC_invalidate_mark_state(); + GC_unpromote_black_lists(); + } /* else we claim the world is already still consistent. We'll */ + /* finish incrementally. */ + /* TODO: Notify GC_EVENT_ABANDON */ + return(FALSE); + } + GC_finish_collection(); +# ifndef SMALL_CONFIG + if (GC_print_stats) { + CLOCK_TYPE current_time; + + GET_TIME(current_time); + GC_log_printf("Complete collection took %lu msecs\n", + MS_TIME_DIFF(current_time,start_time)); + } +# endif + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_END); + return(TRUE); +} + +/* + * Perform n units of garbage collection work. A unit is intended to touch + * roughly GC_RATE pages. Every once in a while, we do more than that. + * This needs to be a fairly large number with our current incremental + * GC strategy, since otherwise we allocate too much during GC, and the + * cleanup gets expensive. + */ +#ifndef GC_RATE +# define GC_RATE 10 +#endif +#ifndef MAX_PRIOR_ATTEMPTS +# define MAX_PRIOR_ATTEMPTS 1 +#endif + /* Maximum number of prior attempts at world stop marking */ + /* A value of 1 means that we finish the second time, no matter */ + /* how long it takes. Doesn't count the initial root scan */ + /* for a full GC. */ + +STATIC int GC_deficit = 0;/* The number of extra calls to GC_mark_some */ + /* that we have made. */ + +GC_INNER void GC_collect_a_little_inner(int n) +{ + IF_CANCEL(int cancel_state;) + + if (GC_dont_gc) return; + DISABLE_CANCEL(cancel_state); + if (GC_incremental && GC_collection_in_progress()) { + int i; + + for (i = GC_deficit; i < GC_RATE*n; i++) { + if (GC_mark_some((ptr_t)0)) { + /* Need to finish a collection */ +# ifdef SAVE_CALL_CHAIN + GC_save_callers(GC_last_stack); +# endif +# ifdef PARALLEL_MARK + if (GC_parallel) + GC_wait_for_reclaim(); +# endif + if (GC_n_attempts < MAX_PRIOR_ATTEMPTS + && GC_time_limit != GC_TIME_UNLIMITED) { +# ifndef NO_CLOCK + GET_TIME(GC_start_time); +# endif + if (!GC_stopped_mark(GC_timeout_stop_func)) { + GC_n_attempts++; + break; + } + } else { + /* FIXME: If possible, GC_default_stop_func should be */ + /* used here. */ + (void)GC_stopped_mark(GC_never_stop_func); + } + GC_finish_collection(); + break; + } + } + if (GC_deficit > 0) GC_deficit -= GC_RATE*n; + if (GC_deficit < 0) GC_deficit = 0; + } else { + GC_maybe_gc(); + } + RESTORE_CANCEL(cancel_state); +} + +GC_INNER void (*GC_check_heap)(void) = 0; +GC_INNER void (*GC_print_all_smashed)(void) = 0; + +GC_API int GC_CALL GC_collect_a_little(void) +{ + int result; + DCL_LOCK_STATE; + + LOCK(); + GC_collect_a_little_inner(1); + result = (int)GC_collection_in_progress(); + UNLOCK(); + if (!result && GC_debugging_started) GC_print_all_smashed(); + return(result); +} + +#ifndef SMALL_CONFIG + /* Variables for world-stop average delay time statistic computation. */ + /* "divisor" is incremented every world-stop and halved when reached */ + /* its maximum (or upon "total_time" overflow). */ + static unsigned world_stopped_total_time = 0; + static unsigned world_stopped_total_divisor = 0; +# ifndef MAX_TOTAL_TIME_DIVISOR + /* We shall not use big values here (so "outdated" delay time */ + /* values would have less impact on "average" delay time value than */ + /* newer ones). */ +# define MAX_TOTAL_TIME_DIVISOR 1000 +# endif +#endif + +#ifdef USE_MUNMAP +# define IF_USE_MUNMAP(x) x +# define COMMA_IF_USE_MUNMAP(x) /* comma */, x +#else +# define IF_USE_MUNMAP(x) /* empty */ +# define COMMA_IF_USE_MUNMAP(x) /* empty */ +#endif + +/* + * Assumes lock is held. We stop the world and mark from all roots. + * If stop_func() ever returns TRUE, we may fail and return FALSE. + * Increment GC_gc_no if we succeed. + */ +STATIC GC_bool GC_stopped_mark(GC_stop_func stop_func) +{ + unsigned i; +# ifndef SMALL_CONFIG + CLOCK_TYPE start_time = 0; /* initialized to prevent warning. */ +# endif + +# if !defined(REDIRECT_MALLOC) && defined(USE_WINALLOC) + GC_add_current_malloc_heap(); +# endif +# if defined(REGISTER_LIBRARIES_EARLY) + GC_cond_register_dynamic_libraries(); +# endif + +# ifndef SMALL_CONFIG + if (GC_PRINT_STATS_FLAG) + GET_TIME(start_time); +# endif + +# if !defined(GC_NO_FINALIZATION) && !defined(GC_TOGGLE_REFS_NOT_NEEDED) + GC_process_togglerefs(); +# endif +# ifdef THREADS + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_PRE_STOP_WORLD); +# endif + STOP_WORLD(); +# ifdef THREADS + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_POST_STOP_WORLD); +# endif + +# ifdef THREAD_LOCAL_ALLOC + GC_world_stopped = TRUE; +# endif + /* Output blank line for convenience here */ + GC_COND_LOG_PRINTF( + "\n--> Marking for collection #%lu after %lu allocated bytes\n", + (unsigned long)GC_gc_no + 1, (unsigned long) GC_bytes_allocd); +# ifdef MAKE_BACK_GRAPH + if (GC_print_back_height) { + GC_build_back_graph(); + } +# endif + + /* Mark from all roots. */ + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_MARK_START); + + /* Minimize junk left in my registers and on the stack */ + GC_clear_a_few_frames(); + GC_noop6(0,0,0,0,0,0); + + GC_initiate_gc(); + for (i = 0;;i++) { + if ((*stop_func)()) { + GC_COND_LOG_PRINTF("Abandoned stopped marking after" + " %u iterations\n", i); + GC_deficit = i; /* Give the mutator a chance. */ +# ifdef THREAD_LOCAL_ALLOC + GC_world_stopped = FALSE; +# endif + +# ifdef THREADS + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_PRE_START_WORLD); +# endif + + START_WORLD(); + +# ifdef THREADS + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_POST_START_WORLD); +# endif + + /* TODO: Notify GC_EVENT_MARK_ABANDON */ + return(FALSE); + } + if (GC_mark_some(GC_approx_sp())) break; + } + + GC_gc_no++; + GC_DBGLOG_PRINTF("GC #%lu freed %ld bytes, heap %lu KiB" + IF_USE_MUNMAP(" (+ %lu KiB unmapped)") "\n", + (unsigned long)GC_gc_no, (long)GC_bytes_found, + TO_KiB_UL(GC_heapsize - GC_unmapped_bytes) /*, */ + COMMA_IF_USE_MUNMAP(TO_KiB_UL(GC_unmapped_bytes))); + + /* Check all debugged objects for consistency */ + if (GC_debugging_started) { + (*GC_check_heap)(); + } + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_MARK_END); + +# ifdef THREAD_LOCAL_ALLOC + GC_world_stopped = FALSE; +# endif + +# ifdef THREADS + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_PRE_START_WORLD); +# endif + + START_WORLD(); + +# ifdef THREADS + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_POST_START_WORLD); +# endif + +# ifndef SMALL_CONFIG + if (GC_PRINT_STATS_FLAG) { + unsigned long time_diff; + unsigned total_time, divisor; + CLOCK_TYPE current_time; + + GET_TIME(current_time); + time_diff = MS_TIME_DIFF(current_time,start_time); + + /* Compute new world-stop delay total time */ + total_time = world_stopped_total_time; + divisor = world_stopped_total_divisor; + if ((int)total_time < 0 || divisor >= MAX_TOTAL_TIME_DIVISOR) { + /* Halve values if overflow occurs */ + total_time >>= 1; + divisor >>= 1; + } + total_time += time_diff < (((unsigned)-1) >> 1) ? + (unsigned)time_diff : ((unsigned)-1) >> 1; + /* Update old world_stopped_total_time and its divisor */ + world_stopped_total_time = total_time; + world_stopped_total_divisor = ++divisor; + + GC_ASSERT(divisor != 0); + GC_log_printf( + "World-stopped marking took %lu msecs (%u in average)\n", + time_diff, total_time / divisor); + } +# endif + return(TRUE); +} + +/* Set all mark bits for the free list whose first entry is q */ +GC_INNER void GC_set_fl_marks(ptr_t q) +{ + if (q != NULL) { + struct hblk *h = HBLKPTR(q); + struct hblk *last_h = h; + hdr *hhdr = HDR(h); + IF_PER_OBJ(size_t sz = hhdr->hb_sz;) + + for (;;) { + unsigned bit_no = MARK_BIT_NO((ptr_t)q - (ptr_t)h, sz); + + if (!mark_bit_from_hdr(hhdr, bit_no)) { + set_mark_bit_from_hdr(hhdr, bit_no); + ++hhdr -> hb_n_marks; + } + + q = obj_link(q); + if (q == NULL) + break; + + h = HBLKPTR(q); + if (h != last_h) { + last_h = h; + hhdr = HDR(h); + IF_PER_OBJ(sz = hhdr->hb_sz;) + } + } + } +} + +#if defined(GC_ASSERTIONS) && defined(THREADS) && defined(THREAD_LOCAL_ALLOC) + /* Check that all mark bits for the free list whose first entry is */ + /* (*pfreelist) are set. Check skipped if points to a special value. */ + void GC_check_fl_marks(void **pfreelist) + { +# ifdef AO_HAVE_load_acquire_read + AO_t *list = (AO_t *)AO_load_acquire_read((AO_t *)pfreelist); + /* Atomic operations are used because the world is running. */ + AO_t *prev; + AO_t *p; + + if ((word)list <= HBLKSIZE) return; + + prev = (AO_t *)pfreelist; + for (p = list; p != NULL;) { + AO_t *next; + + if (!GC_is_marked(p)) { + ABORT_ARG2("Unmarked local free list entry", + ": object %p on list %p", (void *)p, (void *)list); + } + + /* While traversing the free-list, it re-reads the pointer to */ + /* the current node before accepting its next pointer and */ + /* bails out if the latter has changed. That way, it won't */ + /* try to follow the pointer which might be been modified */ + /* after the object was returned to the client. It might */ + /* perform the mark-check on the just allocated object but */ + /* that should be harmless. */ + next = (AO_t *)AO_load_acquire_read(p); + if (AO_load(prev) != (AO_t)p) + break; + prev = p; + p = next; + } +# else + /* FIXME: Not implemented (just skipped). */ + (void)pfreelist; +# endif + } +#endif /* GC_ASSERTIONS && THREAD_LOCAL_ALLOC */ + +/* Clear all mark bits for the free list whose first entry is q */ +/* Decrement GC_bytes_found by number of bytes on free list. */ +STATIC void GC_clear_fl_marks(ptr_t q) +{ + if (q != NULL) { + struct hblk *h = HBLKPTR(q); + struct hblk *last_h = h; + hdr *hhdr = HDR(h); + size_t sz = hhdr->hb_sz; /* Normally set only once. */ + + for (;;) { + unsigned bit_no = MARK_BIT_NO((ptr_t)q - (ptr_t)h, sz); + + if (mark_bit_from_hdr(hhdr, bit_no)) { + size_t n_marks = hhdr -> hb_n_marks; + + GC_ASSERT(n_marks != 0); + clear_mark_bit_from_hdr(hhdr, bit_no); + n_marks--; +# ifdef PARALLEL_MARK + /* Appr. count, don't decrement to zero! */ + if (0 != n_marks || !GC_parallel) { + hhdr -> hb_n_marks = n_marks; + } +# else + hhdr -> hb_n_marks = n_marks; +# endif + } + GC_bytes_found -= sz; + + q = obj_link(q); + if (q == NULL) + break; + + h = HBLKPTR(q); + if (h != last_h) { + last_h = h; + hhdr = HDR(h); + sz = hhdr->hb_sz; + } + } + } +} + +#if defined(GC_ASSERTIONS) && defined(THREADS) && defined(THREAD_LOCAL_ALLOC) + void GC_check_tls(void); +#endif + +GC_on_heap_resize_proc GC_on_heap_resize = 0; + +/* Used for logging only. */ +GC_INLINE int GC_compute_heap_usage_percent(void) +{ + word used = GC_composite_in_use + GC_atomic_in_use; + word heap_sz = GC_heapsize - GC_unmapped_bytes; + return used >= heap_sz ? 0 : used < ((word)-1) / 100 ? + (int)((used * 100) / heap_sz) : (int)(used / (heap_sz / 100)); +} + +/* Finish up a collection. Assumes mark bits are consistent, lock is */ +/* held, but the world is otherwise running. */ +STATIC void GC_finish_collection(void) +{ +# ifndef SMALL_CONFIG + CLOCK_TYPE start_time = 0; /* initialized to prevent warning. */ + CLOCK_TYPE finalize_time = 0; +# endif + +# if defined(GC_ASSERTIONS) && defined(THREADS) \ + && defined(THREAD_LOCAL_ALLOC) && !defined(DBG_HDRS_ALL) + /* Check that we marked some of our own data. */ + /* FIXME: Add more checks. */ + GC_check_tls(); +# endif + +# ifndef SMALL_CONFIG + if (GC_print_stats) + GET_TIME(start_time); +# endif + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_RECLAIM_START); + +# ifndef GC_GET_HEAP_USAGE_NOT_NEEDED + if (GC_bytes_found > 0) + GC_reclaimed_bytes_before_gc += (word)GC_bytes_found; +# endif + GC_bytes_found = 0; +# if defined(LINUX) && defined(__ELF__) && !defined(SMALL_CONFIG) + if (GETENV("GC_PRINT_ADDRESS_MAP") != 0) { + GC_print_address_map(); + } +# endif + COND_DUMP; + if (GC_find_leak) { + /* Mark all objects on the free list. All objects should be */ + /* marked when we're done. */ + word size; /* current object size */ + unsigned kind; + ptr_t q; + + for (kind = 0; kind < GC_n_kinds; kind++) { + for (size = 1; size <= MAXOBJGRANULES; size++) { + q = GC_obj_kinds[kind].ok_freelist[size]; + if (q != 0) GC_set_fl_marks(q); + } + } + GC_start_reclaim(TRUE); + /* The above just checks; it doesn't really reclaim anything. */ + } + +# ifndef GC_NO_FINALIZATION + GC_finalize(); +# endif +# ifdef STUBBORN_ALLOC + GC_clean_changing_list(); +# endif + +# ifndef SMALL_CONFIG + if (GC_print_stats) + GET_TIME(finalize_time); +# endif + + if (GC_print_back_height) { +# ifdef MAKE_BACK_GRAPH + GC_traverse_back_graph(); +# elif !defined(SMALL_CONFIG) + GC_err_printf("Back height not available: " + "Rebuild collector with -DMAKE_BACK_GRAPH\n"); +# endif + } + + /* Clear free list mark bits, in case they got accidentally marked */ + /* (or GC_find_leak is set and they were intentionally marked). */ + /* Also subtract memory remaining from GC_bytes_found count. */ + /* Note that composite objects on free list are cleared. */ + /* Thus accidentally marking a free list is not a problem; only */ + /* objects on the list itself will be marked, and that's fixed here. */ + { + word size; /* current object size */ + ptr_t q; /* pointer to current object */ + unsigned kind; + + for (kind = 0; kind < GC_n_kinds; kind++) { + for (size = 1; size <= MAXOBJGRANULES; size++) { + q = GC_obj_kinds[kind].ok_freelist[size]; + if (q != 0) GC_clear_fl_marks(q); + } + } + } + + GC_VERBOSE_LOG_PRINTF("Bytes recovered before sweep - f.l. count = %ld\n", + (long)GC_bytes_found); + + /* Reconstruct free lists to contain everything not marked */ + GC_start_reclaim(FALSE); + GC_DBGLOG_PRINTF("In-use heap: %d%% (%lu KiB pointers + %lu KiB other)\n", + GC_compute_heap_usage_percent(), + TO_KiB_UL(GC_composite_in_use), + TO_KiB_UL(GC_atomic_in_use)); + if (GC_is_full_gc) { + GC_used_heap_size_after_full = USED_HEAP_SIZE; + GC_need_full_gc = FALSE; + } else { + GC_need_full_gc = USED_HEAP_SIZE - GC_used_heap_size_after_full + > min_bytes_allocd(); + } + + GC_VERBOSE_LOG_PRINTF("Immediately reclaimed %ld bytes, heapsize:" + " %lu bytes" IF_USE_MUNMAP(" (%lu unmapped)") "\n", + (long)GC_bytes_found, + (unsigned long)GC_heapsize /*, */ + COMMA_IF_USE_MUNMAP((unsigned long) + GC_unmapped_bytes)); + + /* Reset or increment counters for next cycle */ + GC_n_attempts = 0; + GC_is_full_gc = FALSE; + GC_bytes_allocd_before_gc += GC_bytes_allocd; + GC_non_gc_bytes_at_gc = GC_non_gc_bytes; + GC_bytes_allocd = 0; + GC_bytes_dropped = 0; + GC_bytes_freed = 0; + GC_finalizer_bytes_freed = 0; + + IF_USE_MUNMAP(GC_unmap_old()); + + if (GC_on_collection_event) + GC_on_collection_event(GC_EVENT_RECLAIM_END); +# ifndef SMALL_CONFIG + if (GC_print_stats) { + CLOCK_TYPE done_time; + + GET_TIME(done_time); +# ifndef GC_NO_FINALIZATION + /* A convenient place to output finalization statistics. */ + GC_print_finalization_stats(); +# endif + GC_log_printf("Finalize plus initiate sweep took %lu + %lu msecs\n", + MS_TIME_DIFF(finalize_time,start_time), + MS_TIME_DIFF(done_time,finalize_time)); + } +# endif +} + +/* If stop_func == 0 then GC_default_stop_func is used instead. */ +STATIC GC_bool GC_try_to_collect_general(GC_stop_func stop_func, + GC_bool force_unmap GC_ATTR_UNUSED) +{ + GC_bool result; + IF_USE_MUNMAP(int old_unmap_threshold;) + IF_CANCEL(int cancel_state;) + DCL_LOCK_STATE; + + if (!EXPECT(GC_is_initialized, TRUE)) GC_init(); + if (GC_debugging_started) GC_print_all_smashed(); + GC_INVOKE_FINALIZERS(); + LOCK(); + DISABLE_CANCEL(cancel_state); +# ifdef USE_MUNMAP + old_unmap_threshold = GC_unmap_threshold; + if (force_unmap || + (GC_force_unmap_on_gcollect && old_unmap_threshold > 0)) + GC_unmap_threshold = 1; /* unmap as much as possible */ +# endif + ENTER_GC(); + /* Minimize junk left in my registers */ + GC_noop6(0,0,0,0,0,0); + result = GC_try_to_collect_inner(stop_func != 0 ? stop_func : + GC_default_stop_func); + EXIT_GC(); + IF_USE_MUNMAP(GC_unmap_threshold = old_unmap_threshold); /* restore */ + RESTORE_CANCEL(cancel_state); + UNLOCK(); + if (result) { + if (GC_debugging_started) GC_print_all_smashed(); + GC_INVOKE_FINALIZERS(); + } + return(result); +} + +/* Externally callable routines to invoke full, stop-the-world collection. */ +GC_API int GC_CALL GC_try_to_collect(GC_stop_func stop_func) +{ + GC_ASSERT(NONNULL_ARG_NOT_NULL(stop_func)); + return (int)GC_try_to_collect_general(stop_func, FALSE); +} + +GC_API void GC_CALL GC_gcollect(void) +{ + /* 0 is passed as stop_func to get GC_default_stop_func value */ + /* while holding the allocation lock (to prevent data races). */ + (void)GC_try_to_collect_general(0, FALSE); + if (GC_have_errors) GC_print_all_errors(); +} + +STATIC word GC_heapsize_at_forced_unmap = 0; + +GC_API void GC_CALL GC_gcollect_and_unmap(void) +{ + /* Record current heap size to make heap growth more conservative */ + /* afterwards (as if the heap is growing from zero size again). */ + GC_heapsize_at_forced_unmap = GC_heapsize; + /* Collect and force memory unmapping to OS. */ + (void)GC_try_to_collect_general(GC_never_stop_func, TRUE); +} + +GC_INNER word GC_n_heap_sects = 0; + /* Number of sections currently in heap. */ + +#ifdef USE_PROC_FOR_LIBRARIES + GC_INNER word GC_n_memory = 0; + /* Number of GET_MEM allocated memory sections. */ +#endif + +#ifdef USE_PROC_FOR_LIBRARIES + /* Add HBLKSIZE aligned, GET_MEM-generated block to GC_our_memory. */ + /* Defined to do nothing if USE_PROC_FOR_LIBRARIES not set. */ + GC_INNER void GC_add_to_our_memory(ptr_t p, size_t bytes) + { + if (0 == p) return; + if (GC_n_memory >= MAX_HEAP_SECTS) + ABORT("Too many GC-allocated memory sections: Increase MAX_HEAP_SECTS"); + GC_our_memory[GC_n_memory].hs_start = p; + GC_our_memory[GC_n_memory].hs_bytes = bytes; + GC_n_memory++; + } +#endif + +/* + * Use the chunk of memory starting at p of size bytes as part of the heap. + * Assumes p is HBLKSIZE aligned, and bytes is a multiple of HBLKSIZE. + */ +GC_INNER void GC_add_to_heap(struct hblk *p, size_t bytes) +{ + hdr * phdr; + word endp; + + if (GC_n_heap_sects >= MAX_HEAP_SECTS) { + ABORT("Too many heap sections: Increase MAXHINCR or MAX_HEAP_SECTS"); + } + while ((word)p <= HBLKSIZE) { + /* Can't handle memory near address zero. */ + ++p; + bytes -= HBLKSIZE; + if (0 == bytes) return; + } + endp = (word)p + bytes; + if (endp <= (word)p) { + /* Address wrapped. */ + bytes -= HBLKSIZE; + if (0 == bytes) return; + endp -= HBLKSIZE; + } + phdr = GC_install_header(p); + if (0 == phdr) { + /* This is extremely unlikely. Can't add it. This will */ + /* almost certainly result in a 0 return from the allocator, */ + /* which is entirely appropriate. */ + return; + } + GC_ASSERT(endp > (word)p && endp == (word)p + bytes); + GC_heap_sects[GC_n_heap_sects].hs_start = (ptr_t)p; + GC_heap_sects[GC_n_heap_sects].hs_bytes = bytes; + GC_n_heap_sects++; + phdr -> hb_sz = bytes; + phdr -> hb_flags = 0; + GC_freehblk(p); + GC_heapsize += bytes; + + /* Normally the caller calculates a new GC_collect_at_heapsize, + * but this is also called directly from alloc_mark_stack, so + * adjust here. It will be recalculated when called from + * GC_expand_hp_inner. + */ + GC_collect_at_heapsize += bytes; + if (GC_collect_at_heapsize < GC_heapsize /* wrapped */) + GC_collect_at_heapsize = (word)(-1); + + if ((word)p <= (word)GC_least_plausible_heap_addr + || GC_least_plausible_heap_addr == 0) { + GC_least_plausible_heap_addr = (void *)((ptr_t)p - sizeof(word)); + /* Making it a little smaller than necessary prevents */ + /* us from getting a false hit from the variable */ + /* itself. There's some unintentional reflection */ + /* here. */ + } + if ((word)p + bytes >= (word)GC_greatest_plausible_heap_addr) { + GC_greatest_plausible_heap_addr = (void *)endp; + } +} + +#if !defined(NO_DEBUGGING) + void GC_print_heap_sects(void) + { + unsigned i; + + GC_printf("Total heap size: %lu" IF_USE_MUNMAP(" (%lu unmapped)") "\n", + (unsigned long)GC_heapsize /*, */ + COMMA_IF_USE_MUNMAP((unsigned long)GC_unmapped_bytes)); + + for (i = 0; i < GC_n_heap_sects; i++) { + ptr_t start = GC_heap_sects[i].hs_start; + size_t len = GC_heap_sects[i].hs_bytes; + struct hblk *h; + unsigned nbl = 0; + + for (h = (struct hblk *)start; (word)h < (word)(start + len); h++) { + if (GC_is_black_listed(h, HBLKSIZE)) nbl++; + } + GC_printf("Section %d from %p to %p %u/%lu blacklisted\n", + i, (void *)start, (void *)&start[len], + nbl, (unsigned long)divHBLKSZ(len)); + } + } +#endif + +void * GC_least_plausible_heap_addr = (void *)ONES; +void * GC_greatest_plausible_heap_addr = 0; + +GC_INLINE word GC_max(word x, word y) +{ + return(x > y? x : y); +} + +GC_INLINE word GC_min(word x, word y) +{ + return(x < y? x : y); +} + +STATIC word GC_max_heapsize = 0; + +GC_API void GC_CALL GC_set_max_heap_size(GC_word n) +{ + GC_max_heapsize = n; +} + +GC_word GC_max_retries = 0; + +/* This explicitly increases the size of the heap. It is used */ +/* internally, but may also be invoked from GC_expand_hp by the user. */ +/* The argument is in units of HBLKSIZE (tiny values are rounded up). */ +/* Returns FALSE on failure. */ +GC_INNER GC_bool GC_expand_hp_inner(word n) +{ + size_t bytes; + struct hblk * space; + word expansion_slop; /* Number of bytes by which we expect the */ + /* heap to expand soon. */ + + if (n < MINHINCR) n = MINHINCR; + bytes = ROUNDUP_PAGESIZE((size_t)n * HBLKSIZE); + if (GC_max_heapsize != 0 + && (GC_max_heapsize < (word)bytes + || GC_heapsize > GC_max_heapsize - (word)bytes)) { + /* Exceeded self-imposed limit */ + return(FALSE); + } + space = GET_MEM(bytes); + GC_add_to_our_memory((ptr_t)space, bytes); + if (space == 0) { + WARN("Failed to expand heap by %" WARN_PRIdPTR " bytes\n", + (word)bytes); + return(FALSE); + } + GC_INFOLOG_PRINTF("Grow heap to %lu KiB after %lu bytes allocated\n", + TO_KiB_UL(GC_heapsize + (word)bytes), + (unsigned long)GC_bytes_allocd); + /* Adjust heap limits generously for blacklisting to work better. */ + /* GC_add_to_heap performs minimal adjustment needed for */ + /* correctness. */ + expansion_slop = min_bytes_allocd() + 4*MAXHINCR*HBLKSIZE; + if ((GC_last_heap_addr == 0 && !((word)space & SIGNB)) + || (GC_last_heap_addr != 0 + && (word)GC_last_heap_addr < (word)space)) { + /* Assume the heap is growing up */ + word new_limit = (word)space + (word)bytes + expansion_slop; + if (new_limit > (word)space) { + GC_greatest_plausible_heap_addr = + (void *)GC_max((word)GC_greatest_plausible_heap_addr, + (word)new_limit); + } + } else { + /* Heap is growing down */ + word new_limit = (word)space - expansion_slop; + if (new_limit < (word)space) { + GC_least_plausible_heap_addr = + (void *)GC_min((word)GC_least_plausible_heap_addr, + (word)space - expansion_slop); + } + } + GC_prev_heap_addr = GC_last_heap_addr; + GC_last_heap_addr = (ptr_t)space; + GC_add_to_heap(space, bytes); + /* Force GC before we are likely to allocate past expansion_slop */ + GC_collect_at_heapsize = + GC_heapsize + expansion_slop - 2*MAXHINCR*HBLKSIZE; + if (GC_collect_at_heapsize < GC_heapsize /* wrapped */) + GC_collect_at_heapsize = (word)(-1); + if (GC_on_heap_resize) + (*GC_on_heap_resize)(GC_heapsize); + + return(TRUE); +} + +/* Really returns a bool, but it's externally visible, so that's clumsy. */ +/* Arguments is in bytes. Includes GC_init() call. */ +GC_API int GC_CALL GC_expand_hp(size_t bytes) +{ + int result; + DCL_LOCK_STATE; + + if (!EXPECT(GC_is_initialized, TRUE)) GC_init(); + LOCK(); + result = (int)GC_expand_hp_inner(divHBLKSZ((word)bytes)); + if (result) GC_requested_heapsize += bytes; + UNLOCK(); + return(result); +} + +word GC_fo_entries = 0; /* used also in extra/MacOS.c */ + +GC_INNER unsigned GC_fail_count = 0; + /* How many consecutive GC/expansion failures? */ + /* Reset by GC_allochblk. */ + +static word last_fo_entries = 0; +static word last_bytes_finalized = 0; + +#define GC_WORD_MAX (~(word)0) + +/* Collect or expand heap in an attempt make the indicated number of */ +/* free blocks available. Should be called until the blocks are */ +/* available (setting retry value to TRUE unless this is the first call */ +/* in a loop) or until it fails by returning FALSE. */ +GC_INNER GC_bool GC_collect_or_expand(word needed_blocks, + GC_bool ignore_off_page, + GC_bool retry) +{ + GC_bool gc_not_stopped = TRUE; + word blocks_to_get; + IF_CANCEL(int cancel_state;) + + DISABLE_CANCEL(cancel_state); + if (!GC_incremental && !GC_dont_gc && + ((GC_dont_expand && GC_bytes_allocd > 0) + || (GC_fo_entries > (last_fo_entries + 500) + && (last_bytes_finalized | GC_bytes_finalized) != 0) + || GC_should_collect())) { + /* Try to do a full collection using 'default' stop_func (unless */ + /* nothing has been allocated since the latest collection or heap */ + /* expansion is disabled). */ + gc_not_stopped = GC_try_to_collect_inner( + GC_bytes_allocd > 0 && (!GC_dont_expand || !retry) ? + GC_default_stop_func : GC_never_stop_func); + if (gc_not_stopped == TRUE || !retry) { + /* Either the collection hasn't been aborted or this is the */ + /* first attempt (in a loop). */ + last_fo_entries = GC_fo_entries; + last_bytes_finalized = GC_bytes_finalized; + RESTORE_CANCEL(cancel_state); + return(TRUE); + } + } + + blocks_to_get = (GC_heapsize - GC_heapsize_at_forced_unmap) + / (HBLKSIZE * GC_free_space_divisor) + + needed_blocks; + if (blocks_to_get > MAXHINCR) { + word slop; + + /* Get the minimum required to make it likely that we can satisfy */ + /* the current request in the presence of black-listing. */ + /* This will probably be more than MAXHINCR. */ + if (ignore_off_page) { + slop = 4; + } else { + slop = 2 * divHBLKSZ(BL_LIMIT); + if (slop > needed_blocks) slop = needed_blocks; + } + if (needed_blocks + slop > MAXHINCR) { + blocks_to_get = needed_blocks + slop; + } else { + blocks_to_get = MAXHINCR; + } + if (blocks_to_get > divHBLKSZ(GC_WORD_MAX)) + blocks_to_get = divHBLKSZ(GC_WORD_MAX); + } + + if (!GC_expand_hp_inner(blocks_to_get) + && (blocks_to_get == needed_blocks + || !GC_expand_hp_inner(needed_blocks))) { + if (gc_not_stopped == FALSE) { + /* Don't increment GC_fail_count here (and no warning). */ + GC_gcollect_inner(); + GC_ASSERT(GC_bytes_allocd == 0); + } else if (GC_fail_count++ < GC_max_retries) { + WARN("Out of Memory! Trying to continue...\n", 0); + GC_gcollect_inner(); + } else { +# if !defined(AMIGA) || !defined(GC_AMIGA_FASTALLOC) + WARN("Out of Memory! Heap size: %" WARN_PRIdPTR " MiB." + " Returning NULL!\n", (GC_heapsize - GC_unmapped_bytes) >> 20); +# endif + RESTORE_CANCEL(cancel_state); + return(FALSE); + } + } else if (GC_fail_count) { + GC_COND_LOG_PRINTF("Memory available again...\n"); + } + RESTORE_CANCEL(cancel_state); + return(TRUE); +} + +/* + * Make sure the object free list for size gran (in granules) is not empty. + * Return a pointer to the first object on the free list. + * The object MUST BE REMOVED FROM THE FREE LIST BY THE CALLER. + * Assumes we hold the allocator lock. + */ +GC_INNER ptr_t GC_allocobj(size_t gran, int kind) +{ + void ** flh = &(GC_obj_kinds[kind].ok_freelist[gran]); + GC_bool tried_minor = FALSE; + GC_bool retry = FALSE; + + if (gran == 0) return(0); + + while (*flh == 0) { + ENTER_GC(); + /* Do our share of marking work */ + if(TRUE_INCREMENTAL) GC_collect_a_little_inner(1); + /* Sweep blocks for objects of this size */ + GC_continue_reclaim(gran, kind); + EXIT_GC(); + if (*flh == 0) { + GC_new_hblk(gran, kind); + if (*flh == 0) { + ENTER_GC(); + if (GC_incremental && GC_time_limit == GC_TIME_UNLIMITED + && !tried_minor) { + GC_collect_a_little_inner(1); + tried_minor = TRUE; + } else { + if (!GC_collect_or_expand(1, FALSE, retry)) { + EXIT_GC(); + return(0); + } + retry = TRUE; + } + EXIT_GC(); + } + } + } + /* Successful allocation; reset failure count. */ + GC_fail_count = 0; + + return(*flh); +} diff --git a/autogen.sh b/autogen.sh new file mode 100755 index 0000000..8a614f9 --- /dev/null +++ b/autogen.sh @@ -0,0 +1,18 @@ +#!/bin/sh +set -e + +# This script creates (or regenerates) configure (as well as aclocal.m4, +# config.h.in, Makefile.in, etc.) missing in the source repository. +# +# If you compile from a distribution tarball, you can skip this. Otherwise, +# make sure that you have Autoconf, Automake, Libtool, and pkg-config +# installed on your system, and that the corresponding *.m4 files are visible +# to the aclocal. The latter can be achieved by using packages shipped by +# your OS, or by installing custom versions of all four packages to the same +# prefix. Otherwise, you may need to invoke autoreconf with the appropriate +# -I options to locate the required *.m4 files. + +autoreconf -i + +echo +echo "Ready to run './configure'." diff --git a/backgraph.c b/backgraph.c new file mode 100644 index 0000000..675df1f --- /dev/null +++ b/backgraph.c @@ -0,0 +1,489 @@ +/* + * Copyright (c) 2001 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +#include "private/dbg_mlc.h" + +/* + * This implements a full, though not well-tuned, representation of the + * backwards points-to graph. This is used to test for non-GC-robust + * data structures; the code is not used during normal garbage collection. + * + * One restriction is that we drop all back-edges from nodes with very + * high in-degree, and simply add them add them to a list of such + * nodes. They are then treated as permanent roots. Id this by itself + * doesn't introduce a space leak, then such nodes can't contribute to + * a growing space leak. + */ + +#ifdef MAKE_BACK_GRAPH + +#define MAX_IN 10 /* Maximum in-degree we handle directly */ + +/* #include */ + +#if !defined(DBG_HDRS_ALL) || (ALIGNMENT != CPP_WORDSZ/8) /* || !defined(UNIX_LIKE) */ +# error The configuration does not support MAKE_BACK_GRAPH +#endif + +/* We store single back pointers directly in the object's oh_bg_ptr field. */ +/* If there is more than one ptr to an object, we store q | FLAG_MANY, */ +/* where q is a pointer to a back_edges object. */ +/* Every once in a while we use a back_edges object even for a single */ +/* pointer, since we need the other fields in the back_edges structure to */ +/* be present in some fraction of the objects. Otherwise we get serious */ +/* performance issues. */ +#define FLAG_MANY 2 + +typedef struct back_edges_struct { + word n_edges; /* Number of edges, including those in continuation */ + /* structures. */ + unsigned short flags; +# define RETAIN 1 /* Directly points to a reachable object; */ + /* retain for next GC. */ + unsigned short height_gc_no; + /* If height > 0, then the GC_gc_no value when it */ + /* was computed. If it was computed this cycle, then */ + /* it is current. If it was computed during the */ + /* last cycle, then it represents the old height, */ + /* which is only saved for live objects referenced by */ + /* dead ones. This may grow due to refs from newly */ + /* dead objects. */ + signed_word height; + /* Longest path through unreachable nodes to this node */ + /* that we found using depth first search. */ + +# define HEIGHT_UNKNOWN ((signed_word)(-2)) +# define HEIGHT_IN_PROGRESS ((signed_word)(-1)) + ptr_t edges[MAX_IN]; + struct back_edges_struct *cont; + /* Pointer to continuation structure; we use only the */ + /* edges field in the continuation. */ + /* also used as free list link. */ +} back_edges; + +/* Allocate a new back edge structure. Should be more sophisticated */ +/* if this were production code. */ +#define MAX_BACK_EDGE_STRUCTS 100000 +static back_edges *back_edge_space = 0; +STATIC int GC_n_back_edge_structs = 0; + /* Serves as pointer to never used */ + /* back_edges space. */ +static back_edges *avail_back_edges = 0; + /* Pointer to free list of deallocated */ + /* back_edges structures. */ + +static back_edges * new_back_edges(void) +{ + if (0 == back_edge_space) { + size_t bytes_to_get = ROUNDUP_PAGESIZE_IF_MMAP(MAX_BACK_EDGE_STRUCTS + * sizeof(back_edges)); + + back_edge_space = (back_edges *)GET_MEM(bytes_to_get); + if (NULL == back_edge_space) + ABORT("Insufficient memory for back edges"); + GC_add_to_our_memory((ptr_t)back_edge_space, bytes_to_get); + } + if (0 != avail_back_edges) { + back_edges * result = avail_back_edges; + avail_back_edges = result -> cont; + result -> cont = 0; + return result; + } + if (GC_n_back_edge_structs >= MAX_BACK_EDGE_STRUCTS - 1) { + ABORT("Needed too much space for back edges: adjust " + "MAX_BACK_EDGE_STRUCTS"); + } + return back_edge_space + (GC_n_back_edge_structs++); +} + +/* Deallocate p and its associated continuation structures. */ +static void deallocate_back_edges(back_edges *p) +{ + back_edges *last = p; + + while (0 != last -> cont) last = last -> cont; + last -> cont = avail_back_edges; + avail_back_edges = p; +} + +/* Table of objects that are currently on the depth-first search */ +/* stack. Only objects with in-degree one are in this table. */ +/* Other objects are identified using HEIGHT_IN_PROGRESS. */ +/* FIXME: This data structure NEEDS IMPROVEMENT. */ +#define INITIAL_IN_PROGRESS 10000 +static ptr_t * in_progress_space = 0; +static size_t in_progress_size = 0; +static size_t n_in_progress = 0; + +static void push_in_progress(ptr_t p) +{ + if (n_in_progress >= in_progress_size) { + ptr_t * new_in_progress_space; + + if (NULL == in_progress_space) { + in_progress_size = ROUNDUP_PAGESIZE_IF_MMAP(INITIAL_IN_PROGRESS + * sizeof(ptr_t)) + / sizeof(ptr_t); + new_in_progress_space = + (ptr_t *)GET_MEM(in_progress_size * sizeof(ptr_t)); + } else { + in_progress_size *= 2; + new_in_progress_space = (ptr_t *) + GET_MEM(in_progress_size * sizeof(ptr_t)); + if (new_in_progress_space != NULL) + BCOPY(in_progress_space, new_in_progress_space, + n_in_progress * sizeof(ptr_t)); + } + GC_add_to_our_memory((ptr_t)new_in_progress_space, + in_progress_size * sizeof(ptr_t)); +# ifndef GWW_VDB + GC_scratch_recycle_no_gww(in_progress_space, + n_in_progress * sizeof(ptr_t)); +# elif defined(LINT2) + /* TODO: implement GWW-aware recycling as in alloc_mark_stack */ + GC_noop1((word)in_progress_space); +# endif + in_progress_space = new_in_progress_space; + } + if (in_progress_space == 0) + ABORT("MAKE_BACK_GRAPH: Out of in-progress space: " + "Huge linear data structure?"); + in_progress_space[n_in_progress++] = p; +} + +static GC_bool is_in_progress(ptr_t p) +{ + size_t i; + for (i = 0; i < n_in_progress; ++i) { + if (in_progress_space[i] == p) return TRUE; + } + return FALSE; +} + +GC_INLINE void pop_in_progress(ptr_t p GC_ATTR_UNUSED) +{ + --n_in_progress; + GC_ASSERT(in_progress_space[n_in_progress] == p); +} + +#define GET_OH_BG_PTR(p) \ + (ptr_t)GC_REVEAL_POINTER(((oh *)(p)) -> oh_bg_ptr) +#define SET_OH_BG_PTR(p,q) (((oh *)(p)) -> oh_bg_ptr = GC_HIDE_POINTER(q)) + +/* Execute s once for each predecessor q of p in the points-to graph. */ +/* s should be a bracketed statement. We declare q. */ +#define FOR_EACH_PRED(q, p, s) \ + do { \ + ptr_t q = GET_OH_BG_PTR(p); \ + if (!((word)q & FLAG_MANY)) { \ + if (q && !((word)q & 1)) s \ + /* !((word)q & 1) checks for a misinterpreted freelist link */ \ + } else { \ + back_edges *orig_be_ = (back_edges *)((word)q & ~FLAG_MANY); \ + back_edges *be_ = orig_be_; \ + int local_; \ + word total_; \ + word n_edges_ = be_ -> n_edges; \ + for (total_ = 0, local_ = 0; total_ < n_edges_; ++local_, ++total_) { \ + if (local_ == MAX_IN) { \ + be_ = be_ -> cont; \ + local_ = 0; \ + } \ + q = be_ -> edges[local_]; s \ + } \ + } \ + } while (0) + +/* Ensure that p has a back_edges structure associated with it. */ +static void ensure_struct(ptr_t p) +{ + ptr_t old_back_ptr = GET_OH_BG_PTR(p); + + if (!((word)old_back_ptr & FLAG_MANY)) { + back_edges *be = new_back_edges(); + be -> flags = 0; + if (0 == old_back_ptr) { + be -> n_edges = 0; + } else { + be -> n_edges = 1; + be -> edges[0] = old_back_ptr; + } + be -> height = HEIGHT_UNKNOWN; + be -> height_gc_no = (unsigned short)(GC_gc_no - 1); + GC_ASSERT((word)be >= (word)back_edge_space); + SET_OH_BG_PTR(p, (word)be | FLAG_MANY); + } +} + +/* Add the (forward) edge from p to q to the backward graph. Both p */ +/* q are pointers to the object base, i.e. pointers to an oh. */ +static void add_edge(ptr_t p, ptr_t q) +{ + ptr_t old_back_ptr = GET_OH_BG_PTR(q); + back_edges * be, *be_cont; + word i; + + GC_ASSERT(p == GC_base(p) && q == GC_base(q)); + if (!GC_HAS_DEBUG_INFO(q) || !GC_HAS_DEBUG_INFO(p)) { + /* This is really a misinterpreted free list link, since we saw */ + /* a pointer to a free list. Don't overwrite it! */ + return; + } + if (0 == old_back_ptr) { + static unsigned random_number = 13; +# define GOT_LUCKY_NUMBER (((++random_number) & 0x7f) == 0) + /* A not very random number we use to occasionally allocate a */ + /* back_edges structure even for a single backward edge. This */ + /* prevents us from repeatedly tracing back through very long */ + /* chains, since we will have some place to store height and */ + /* in_progress flags along the way. */ + + SET_OH_BG_PTR(q, p); + if (GOT_LUCKY_NUMBER) ensure_struct(q); + return; + } + /* Check whether it was already in the list of predecessors. */ + FOR_EACH_PRED(pred, q, { if (p == pred) return; }); + ensure_struct(q); + old_back_ptr = GET_OH_BG_PTR(q); + be = (back_edges *)((word)old_back_ptr & ~FLAG_MANY); + for (i = be -> n_edges, be_cont = be; i > MAX_IN; i -= MAX_IN) + be_cont = be_cont -> cont; + if (i == MAX_IN) { + be_cont -> cont = new_back_edges(); + be_cont = be_cont -> cont; + i = 0; + } + be_cont -> edges[i] = p; + be -> n_edges++; +# ifdef DEBUG_PRINT_BIG_N_EDGES + if (GC_print_stats == VERBOSE && be -> n_edges == 100) { + GC_err_printf("The following object has big in-degree:\n"); + GC_print_heap_obj(q); + } +# endif +} + +typedef void (*per_object_func)(ptr_t p, size_t n_bytes, word gc_descr); + +static void per_object_helper(struct hblk *h, word fn) +{ + hdr * hhdr = HDR(h); + size_t sz = hhdr -> hb_sz; + word descr = hhdr -> hb_descr; + per_object_func f = (per_object_func)fn; + int i = 0; + + do { + f((ptr_t)(h -> hb_body + i), sz, descr); + i += (int)sz; + } while ((word)i + sz <= BYTES_TO_WORDS(HBLKSIZE)); +} + +GC_INLINE void GC_apply_to_each_object(per_object_func f) +{ + GC_apply_to_all_blocks(per_object_helper, (word)f); +} + +static void reset_back_edge(ptr_t p, size_t n_bytes GC_ATTR_UNUSED, + word gc_descr GC_ATTR_UNUSED) +{ + /* Skip any free list links, or dropped blocks */ + if (GC_HAS_DEBUG_INFO(p)) { + ptr_t old_back_ptr = GET_OH_BG_PTR(p); + if ((word)old_back_ptr & FLAG_MANY) { + back_edges *be = (back_edges *)((word)old_back_ptr & ~FLAG_MANY); + if (!(be -> flags & RETAIN)) { + deallocate_back_edges(be); + SET_OH_BG_PTR(p, 0); + } else { + + GC_ASSERT(GC_is_marked(p)); + + /* Back edges may point to objects that will not be retained. */ + /* Delete them for now, but remember the height. */ + /* Some will be added back at next GC. */ + be -> n_edges = 0; + if (0 != be -> cont) { + deallocate_back_edges(be -> cont); + be -> cont = 0; + } + + GC_ASSERT(GC_is_marked(p)); + + /* We only retain things for one GC cycle at a time. */ + be -> flags &= ~RETAIN; + } + } else /* Simple back pointer */ { + /* Clear to avoid dangling pointer. */ + SET_OH_BG_PTR(p, 0); + } + } +} + +static void add_back_edges(ptr_t p, size_t n_bytes, word gc_descr) +{ + word *currentp = (word *)(p + sizeof(oh)); + + /* For now, fix up non-length descriptors conservatively. */ + if((gc_descr & GC_DS_TAGS) != GC_DS_LENGTH) { + gc_descr = n_bytes; + } + while ((word)currentp < (word)(p + gc_descr)) { + word current = *currentp++; + FIXUP_POINTER(current); + if (current >= (word)GC_least_plausible_heap_addr && + current <= (word)GC_greatest_plausible_heap_addr) { + ptr_t target = GC_base((void *)current); + if (0 != target) { + add_edge(p, target); + } + } + } +} + +/* Rebuild the representation of the backward reachability graph. */ +/* Does not examine mark bits. Can be called before GC. */ +GC_INNER void GC_build_back_graph(void) +{ + GC_apply_to_each_object(add_back_edges); +} + +/* Return an approximation to the length of the longest simple path */ +/* through unreachable objects to p. We refer to this as the height */ +/* of p. */ +static word backwards_height(ptr_t p) +{ + word result; + ptr_t back_ptr = GET_OH_BG_PTR(p); + back_edges *be; + + if (0 == back_ptr) return 1; + if (!((word)back_ptr & FLAG_MANY)) { + if (is_in_progress(p)) return 0; /* DFS back edge, i.e. we followed */ + /* an edge to an object already */ + /* on our stack: ignore */ + push_in_progress(p); + result = backwards_height(back_ptr)+1; + pop_in_progress(p); + return result; + } + be = (back_edges *)((word)back_ptr & ~FLAG_MANY); + if (be -> height >= 0 && be -> height_gc_no == (unsigned short)GC_gc_no) + return be -> height; + /* Ignore back edges in DFS */ + if (be -> height == HEIGHT_IN_PROGRESS) return 0; + result = (be -> height > 0? be -> height : 1); + be -> height = HEIGHT_IN_PROGRESS; + FOR_EACH_PRED(q, p, { + word this_height; + if (GC_is_marked(q) && !(FLAG_MANY & (word)GET_OH_BG_PTR(p))) { + GC_COND_LOG_PRINTF("Found bogus pointer from %p to %p\n", + (void *)q, (void *)p); + /* Reachable object "points to" unreachable one. */ + /* Could be caused by our lax treatment of GC descriptors. */ + this_height = 1; + } else { + this_height = backwards_height(q); + } + if (this_height >= result) result = this_height + 1; + }); + be -> height = result; + be -> height_gc_no = (unsigned short)GC_gc_no; + return result; +} + +STATIC word GC_max_height = 0; +STATIC ptr_t GC_deepest_obj = NULL; + +/* Compute the maximum height of every unreachable predecessor p of a */ +/* reachable object. Arrange to save the heights of all such objects p */ +/* so that they can be used in calculating the height of objects in the */ +/* next GC. */ +/* Set GC_max_height to be the maximum height we encounter, and */ +/* GC_deepest_obj to be the corresponding object. */ +static void update_max_height(ptr_t p, size_t n_bytes GC_ATTR_UNUSED, + word gc_descr GC_ATTR_UNUSED) +{ + if (GC_is_marked(p) && GC_HAS_DEBUG_INFO(p)) { + word p_height = 0; + ptr_t p_deepest_obj = 0; + ptr_t back_ptr; + back_edges *be = 0; + + /* If we remembered a height last time, use it as a minimum. */ + /* It may have increased due to newly unreachable chains pointing */ + /* to p, but it can't have decreased. */ + back_ptr = GET_OH_BG_PTR(p); + if (0 != back_ptr && ((word)back_ptr & FLAG_MANY)) { + be = (back_edges *)((word)back_ptr & ~FLAG_MANY); + if (be -> height != HEIGHT_UNKNOWN) p_height = be -> height; + } + FOR_EACH_PRED(q, p, { + if (!GC_is_marked(q) && GC_HAS_DEBUG_INFO(q)) { + word q_height; + + q_height = backwards_height(q); + if (q_height > p_height) { + p_height = q_height; + p_deepest_obj = q; + } + } + }); + if (p_height > 0) { + /* Remember the height for next time. */ + if (be == 0) { + ensure_struct(p); + back_ptr = GET_OH_BG_PTR(p); + be = (back_edges *)((word)back_ptr & ~FLAG_MANY); + } + be -> flags |= RETAIN; + be -> height = p_height; + be -> height_gc_no = (unsigned short)GC_gc_no; + } + if (p_height > GC_max_height) { + GC_max_height = p_height; + GC_deepest_obj = p_deepest_obj; + } + } +} + +STATIC word GC_max_max_height = 0; + +GC_INNER void GC_traverse_back_graph(void) +{ + GC_max_height = 0; + GC_apply_to_each_object(update_max_height); + if (0 != GC_deepest_obj) + GC_set_mark_bit(GC_deepest_obj); /* Keep it until we can print it. */ +} + +void GC_print_back_graph_stats(void) +{ + GC_printf("Maximum backwards height of reachable objects at GC %lu is %lu\n", + (unsigned long) GC_gc_no, (unsigned long)GC_max_height); + if (GC_max_height > GC_max_max_height) { + GC_max_max_height = GC_max_height; + GC_err_printf( + "The following unreachable object is last in a longest chain " + "of unreachable objects:\n"); + GC_print_heap_obj(GC_deepest_obj); + } + GC_COND_LOG_PRINTF("Needed max total of %d back-edge structs\n", + GC_n_back_edge_structs); + GC_apply_to_each_object(reset_back_edge); + GC_deepest_obj = 0; +} + +#endif /* MAKE_BACK_GRAPH */ diff --git a/bdw-gc.pc.in b/bdw-gc.pc.in new file mode 100644 index 0000000..ef4c234 --- /dev/null +++ b/bdw-gc.pc.in @@ -0,0 +1,10 @@ +prefix=@prefix@ +exec_prefix=@exec_prefix@ +libdir=@libdir@ +includedir=@includedir@ + +Name: Boehm-Demers-Weiser Conservative Garbage Collector +Description: A garbage collector for C and C++ +Version: @PACKAGE_VERSION@ +Libs: -L${libdir} -lgc +Cflags: -I${includedir} diff --git a/blacklst.c b/blacklst.c new file mode 100644 index 0000000..c06fbdd --- /dev/null +++ b/blacklst.c @@ -0,0 +1,290 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +/* + * We maintain several hash tables of hblks that have had false hits. + * Each contains one bit per hash bucket; If any page in the bucket + * has had a false hit, we assume that all of them have. + * See the definition of page_hash_table in gc_private.h. + * False hits from the stack(s) are much more dangerous than false hits + * from elsewhere, since the former can pin a large object that spans the + * block, even though it does not start on the dangerous block. + */ + +/* + * Externally callable routines are: + + * GC_add_to_black_list_normal + * GC_add_to_black_list_stack + * GC_promote_black_lists + * GC_is_black_listed + * + * All require that the allocator lock is held. + */ + +/* Pointers to individual tables. We replace one table by another by */ +/* switching these pointers. */ +STATIC word * GC_old_normal_bl = NULL; + /* Nonstack false references seen at last full */ + /* collection. */ +STATIC word * GC_incomplete_normal_bl = NULL; + /* Nonstack false references seen since last */ + /* full collection. */ +STATIC word * GC_old_stack_bl = NULL; +STATIC word * GC_incomplete_stack_bl = NULL; + +STATIC word GC_total_stack_black_listed = 0; + /* Number of bytes on stack blacklist. */ + +GC_INNER word GC_black_list_spacing = MINHINCR * HBLKSIZE; + /* Initial rough guess. */ + +STATIC void GC_clear_bl(word *); + +GC_INNER void GC_default_print_heap_obj_proc(ptr_t p) +{ + ptr_t base = GC_base(p); + int kind = HDR(base)->hb_obj_kind; + + GC_err_printf("object at %p of appr. %lu bytes (%s)\n", + (void *)base, (unsigned long)GC_size(base), + kind == PTRFREE ? "atomic" : + IS_UNCOLLECTABLE(kind) ? "uncollectable" : "composite"); +} + +GC_INNER void (*GC_print_heap_obj)(ptr_t p) = GC_default_print_heap_obj_proc; + +#ifdef PRINT_BLACK_LIST + STATIC void GC_print_blacklisted_ptr(word p, ptr_t source, + const char *kind_str) + { + ptr_t base = GC_base(source); + + if (0 == base) { + GC_err_printf("Black listing (%s) %p referenced from %p in %s\n", + kind_str, (void *)p, (void *)source, + NULL != source ? "root set" : "register"); + } else { + /* FIXME: We can't call the debug version of GC_print_heap_obj */ + /* (with PRINT_CALL_CHAIN) here because the lock is held and */ + /* the world is stopped. */ + GC_err_printf("Black listing (%s) %p referenced from %p in" + " object at %p of appr. %lu bytes\n", + kind_str, (void *)p, (void *)source, + (void *)base, (unsigned long)GC_size(base)); + } + } +#endif /* PRINT_BLACK_LIST */ + +GC_INNER void GC_bl_init_no_interiors(void) +{ + if (GC_incomplete_normal_bl == 0) { + GC_old_normal_bl = (word *)GC_scratch_alloc(sizeof(page_hash_table)); + GC_incomplete_normal_bl = (word *)GC_scratch_alloc( + sizeof(page_hash_table)); + if (GC_old_normal_bl == 0 || GC_incomplete_normal_bl == 0) { + GC_err_printf("Insufficient memory for black list\n"); + EXIT(); + } + GC_clear_bl(GC_old_normal_bl); + GC_clear_bl(GC_incomplete_normal_bl); + } +} + +GC_INNER void GC_bl_init(void) +{ + if (!GC_all_interior_pointers) { + GC_bl_init_no_interiors(); + } + GC_ASSERT(NULL == GC_old_stack_bl && NULL == GC_incomplete_stack_bl); + GC_old_stack_bl = (word *)GC_scratch_alloc(sizeof(page_hash_table)); + GC_incomplete_stack_bl = (word *)GC_scratch_alloc(sizeof(page_hash_table)); + if (GC_old_stack_bl == 0 || GC_incomplete_stack_bl == 0) { + GC_err_printf("Insufficient memory for black list\n"); + EXIT(); + } + GC_clear_bl(GC_old_stack_bl); + GC_clear_bl(GC_incomplete_stack_bl); +} + +STATIC void GC_clear_bl(word *doomed) +{ + BZERO(doomed, sizeof(page_hash_table)); +} + +STATIC void GC_copy_bl(word *old, word *new) +{ + BCOPY(old, new, sizeof(page_hash_table)); +} + +static word total_stack_black_listed(void); + +/* Signal the completion of a collection. Turn the incomplete black */ +/* lists into new black lists, etc. */ +GC_INNER void GC_promote_black_lists(void) +{ + word * very_old_normal_bl = GC_old_normal_bl; + word * very_old_stack_bl = GC_old_stack_bl; + + GC_old_normal_bl = GC_incomplete_normal_bl; + GC_old_stack_bl = GC_incomplete_stack_bl; + if (!GC_all_interior_pointers) { + GC_clear_bl(very_old_normal_bl); + } + GC_clear_bl(very_old_stack_bl); + GC_incomplete_normal_bl = very_old_normal_bl; + GC_incomplete_stack_bl = very_old_stack_bl; + GC_total_stack_black_listed = total_stack_black_listed(); + GC_VERBOSE_LOG_PRINTF( + "%lu bytes in heap blacklisted for interior pointers\n", + (unsigned long)GC_total_stack_black_listed); + if (GC_total_stack_black_listed != 0) { + GC_black_list_spacing = + HBLKSIZE*(GC_heapsize/GC_total_stack_black_listed); + } + if (GC_black_list_spacing < 3 * HBLKSIZE) { + GC_black_list_spacing = 3 * HBLKSIZE; + } + if (GC_black_list_spacing > MAXHINCR * HBLKSIZE) { + GC_black_list_spacing = MAXHINCR * HBLKSIZE; + /* Makes it easier to allocate really huge blocks, which otherwise */ + /* may have problems with nonuniform blacklist distributions. */ + /* This way we should always succeed immediately after growing the */ + /* heap. */ + } +} + +GC_INNER void GC_unpromote_black_lists(void) +{ + if (!GC_all_interior_pointers) { + GC_copy_bl(GC_old_normal_bl, GC_incomplete_normal_bl); + } + GC_copy_bl(GC_old_stack_bl, GC_incomplete_stack_bl); +} + +/* P is not a valid pointer reference, but it falls inside */ +/* the plausible heap bounds. */ +/* Add it to the normal incomplete black list if appropriate. */ +#ifdef PRINT_BLACK_LIST + GC_INNER void GC_add_to_black_list_normal(word p, ptr_t source) +#else + GC_INNER void GC_add_to_black_list_normal(word p) +#endif +{ + if (GC_modws_valid_offsets[p & (sizeof(word)-1)]) { + word index = PHT_HASH((word)p); + + if (HDR(p) == 0 || get_pht_entry_from_index(GC_old_normal_bl, index)) { +# ifdef PRINT_BLACK_LIST + if (!get_pht_entry_from_index(GC_incomplete_normal_bl, index)) { + GC_print_blacklisted_ptr(p, source, "normal"); + } +# endif + set_pht_entry_from_index(GC_incomplete_normal_bl, index); + } /* else this is probably just an interior pointer to an allocated */ + /* object, and isn't worth black listing. */ + } +} + +/* And the same for false pointers from the stack. */ +#ifdef PRINT_BLACK_LIST + GC_INNER void GC_add_to_black_list_stack(word p, ptr_t source) +#else + GC_INNER void GC_add_to_black_list_stack(word p) +#endif +{ + word index = PHT_HASH((word)p); + + if (HDR(p) == 0 || get_pht_entry_from_index(GC_old_stack_bl, index)) { +# ifdef PRINT_BLACK_LIST + if (!get_pht_entry_from_index(GC_incomplete_stack_bl, index)) { + GC_print_blacklisted_ptr(p, source, "stack"); + } +# endif + set_pht_entry_from_index(GC_incomplete_stack_bl, index); + } +} + +/* + * Is the block starting at h of size len bytes black listed? If so, + * return the address of the next plausible r such that (r, len) might not + * be black listed. (R may not actually be in the heap. We guarantee only + * that every smaller value of r after h is also black listed.) + * If (h,len) is not black listed, return 0. + * Knows about the structure of the black list hash tables. + */ +struct hblk * GC_is_black_listed(struct hblk *h, word len) +{ + word index = PHT_HASH((word)h); + word i; + word nblocks; + + if (!GC_all_interior_pointers + && (get_pht_entry_from_index(GC_old_normal_bl, index) + || get_pht_entry_from_index(GC_incomplete_normal_bl, index))) { + return (h+1); + } + + nblocks = divHBLKSZ(len); + for (i = 0;;) { + if (GC_old_stack_bl[divWORDSZ(index)] == 0 + && GC_incomplete_stack_bl[divWORDSZ(index)] == 0) { + /* An easy case */ + i += WORDSZ - modWORDSZ(index); + } else { + if (get_pht_entry_from_index(GC_old_stack_bl, index) + || get_pht_entry_from_index(GC_incomplete_stack_bl, index)) { + return(h+i+1); + } + i++; + } + if (i >= nblocks) break; + index = PHT_HASH((word)(h+i)); + } + return(0); +} + +/* Return the number of blacklisted blocks in a given range. */ +/* Used only for statistical purposes. */ +/* Looks only at the GC_incomplete_stack_bl. */ +STATIC word GC_number_stack_black_listed(struct hblk *start, + struct hblk *endp1) +{ + register struct hblk * h; + word result = 0; + + for (h = start; (word)h < (word)endp1; h++) { + word index = PHT_HASH((word)h); + + if (get_pht_entry_from_index(GC_old_stack_bl, index)) result++; + } + return(result); +} + +/* Return the total number of (stack) black-listed bytes. */ +static word total_stack_black_listed(void) +{ + register unsigned i; + word total = 0; + + for (i = 0; i < GC_n_heap_sects; i++) { + struct hblk * start = (struct hblk *) GC_heap_sects[i].hs_start; + struct hblk * endp1 = start + divHBLKSZ(GC_heap_sects[i].hs_bytes); + + total += GC_number_stack_black_listed(start, endp1); + } + return(total * HBLKSIZE); +} diff --git a/build/s60v3/bld.inf b/build/s60v3/bld.inf new file mode 100644 index 0000000..491fcf4 --- /dev/null +++ b/build/s60v3/bld.inf @@ -0,0 +1,11 @@ +/* + Name : bld.inf + Description : This file provides the information required for building the + whole of a libgc. +*/ + +PRJ_PLATFORMS +default armv5 + +PRJ_MMPFILES +libgc.mmp diff --git a/build/s60v3/libgc.mmp b/build/s60v3/libgc.mmp new file mode 100644 index 0000000..8c0dcab --- /dev/null +++ b/build/s60v3/libgc.mmp @@ -0,0 +1,76 @@ +TARGET libgc.dll + +TARGETTYPE dll +UID 0x1000008d 0x200107C2 // check uid + +EXPORTUNFROZEN +EPOCALLOWDLLDATA +//ALWAYS_BUILD_AS_ARM +//nocompresstarget +//srcdbg +//baseaddress 00500000 +//LINKEROPTION CW -map libgc.map +//LINKEROPTION CW -filealign 0x10000 + +CAPABILITY PowerMgmt ReadDeviceData ReadUserData WriteDeviceData WriteUserData SwEvent LocalServices NetworkServices UserEnvironment + + +MACRO ALL_INTERIOR_POINTERS +MACRO NO_EXECUTE_PERMISSION +MACRO USE_MMAP +MACRO GC_DONT_REGISTER_MAIN_STATIC_DATA +MACRO GC_DLL +MACRO SYMBIAN +//MACRO ENABLE_DISCLAIM +//MACRO GC_GCJ_SUPPORT + +USERINCLUDE ..\..\include +USERINCLUDE ..\..\include\private + +SYSTEMINCLUDE \epoc32\include +SYSTEMINCLUDE \epoc32\include\stdapis + +SOURCEPATH ..\..\ + +SOURCE allchblk.c +SOURCE alloc.c +SOURCE blacklst.c +SOURCE dbg_mlc.c +SOURCE dyn_load.c +SOURCE finalize.c +SOURCE fnlz_mlc.c +//SOURCE gc_cpp.cpp +SOURCE gcj_mlc.c +SOURCE headers.c +SOURCE mach_dep.c +SOURCE malloc.c +SOURCE mallocx.c +SOURCE mark.c +SOURCE mark_rts.c +SOURCE misc.c +SOURCE new_hblk.c +SOURCE obj_map.c +SOURCE os_dep.c +SOURCE extra/symbian.cpp +SOURCE ptr_chck.c +SOURCE reclaim.c +SOURCE stubborn.c +SOURCE typd_mlc.c + +/* +#ifdef ENABLE_ABIV2_MODE + DEBUGGABLE_UDEBONLY +#endif +*/ + +// Using main() as entry point +STATICLIBRARY libcrt0.lib + +// libc and euser are always needed when using main() entry point +LIBRARY libc.lib + + +LIBRARY euser.lib +LIBRARY efsrv.lib +LIBRARY avkon.lib +LIBRARY eikcore.lib diff --git a/checksums.c b/checksums.c new file mode 100644 index 0000000..4847661 --- /dev/null +++ b/checksums.c @@ -0,0 +1,222 @@ +/* + * Copyright (c) 1992-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +#ifdef CHECKSUMS + +/* This is debugging code intended to verify the results of dirty bit */ +/* computations. Works only in a single threaded environment. */ +/* We assume that stubborn objects are changed only when they are */ +/* enabled for writing. (Certain kinds of writing are actually */ +/* safe under other conditions.) */ +#define NSUMS 10000 + +#define OFFSET 0x10000 + +typedef struct { + GC_bool new_valid; + word old_sum; + word new_sum; + struct hblk * block; /* Block to which this refers + OFFSET */ + /* to hide it from collector. */ +} page_entry; + +page_entry GC_sums[NSUMS]; + +STATIC word GC_faulted[NSUMS] = { 0 }; + /* Record of pages on which we saw a write fault. */ + +STATIC size_t GC_n_faulted = 0; + +#if defined(MPROTECT_VDB) && !defined(DARWIN) + void GC_record_fault(struct hblk * h) + { + word page = (word)h & ~(GC_page_size - 1); + + GC_ASSERT(GC_page_size != 0); + if (GC_n_faulted >= NSUMS) ABORT("write fault log overflowed"); + GC_faulted[GC_n_faulted++] = page; + } +#endif + +STATIC GC_bool GC_was_faulted(struct hblk *h) +{ + size_t i; + word page = (word)h & ~(GC_page_size - 1); + + for (i = 0; i < GC_n_faulted; ++i) { + if (GC_faulted[i] == page) return TRUE; + } + return FALSE; +} + +STATIC word GC_checksum(struct hblk *h) +{ + word *p = (word *)h; + word *lim = (word *)(h+1); + word result = 0; + + while ((word)p < (word)lim) { + result += *p++; + } + return(result | 0x80000000 /* doesn't look like pointer */); +} + +#ifdef STUBBORN_ALLOC + /* Check whether a stubborn object from the given block appears on */ + /* the appropriate free list. */ + STATIC GC_bool GC_on_free_list(struct hblk *h) + { + hdr * hhdr = HDR(h); + size_t sz = BYTES_TO_WORDS(hhdr -> hb_sz); + ptr_t p; + + if (sz > MAXOBJWORDS) return(FALSE); + for (p = GC_sobjfreelist[sz]; p != 0; p = obj_link(p)) { + if (HBLKPTR(p) == h) return(TRUE); + } + return(FALSE); + } +#endif + +int GC_n_dirty_errors = 0; +int GC_n_faulted_dirty_errors = 0; +int GC_n_changed_errors = 0; +unsigned long GC_n_clean = 0; +unsigned long GC_n_dirty = 0; + +STATIC void GC_update_check_page(struct hblk *h, int index) +{ + page_entry *pe = GC_sums + index; + hdr * hhdr = HDR(h); + struct hblk *b; + + if (pe -> block != 0 && pe -> block != h + OFFSET) ABORT("goofed"); + pe -> old_sum = pe -> new_sum; + pe -> new_sum = GC_checksum(h); +# if !defined(MSWIN32) && !defined(MSWINCE) + if (pe -> new_sum != 0x80000000 && !GC_page_was_ever_dirty(h)) { + GC_err_printf("GC_page_was_ever_dirty(%p) is wrong\n", (void *)h); + } +# endif + if (GC_page_was_dirty(h)) { + GC_n_dirty++; + } else { + GC_n_clean++; + } + b = h; + while (IS_FORWARDING_ADDR_OR_NIL(hhdr) && hhdr != 0) { + b -= (word)hhdr; + hhdr = HDR(b); + } + if (pe -> new_valid + && hhdr != 0 && hhdr -> hb_descr != 0 /* may contain pointers */ + && pe -> old_sum != pe -> new_sum) { + if (!GC_page_was_dirty(h) || !GC_page_was_ever_dirty(h)) { + GC_bool was_faulted = GC_was_faulted(h); + /* Set breakpoint here */GC_n_dirty_errors++; + if (was_faulted) GC_n_faulted_dirty_errors++; + } +# ifdef STUBBORN_ALLOC + if (!HBLK_IS_FREE(hhdr) + && hhdr -> hb_obj_kind == STUBBORN + && !GC_page_was_changed(h) + && !GC_on_free_list(h)) { + /* if GC_on_free_list(h) then reclaim may have touched it */ + /* without any allocations taking place. */ + /* Set breakpoint here */GC_n_changed_errors++; + } +# endif + } + pe -> new_valid = TRUE; + pe -> block = h + OFFSET; +} + +word GC_bytes_in_used_blocks = 0; + +STATIC void GC_add_block(struct hblk *h, word dummy GC_ATTR_UNUSED) +{ + hdr * hhdr = HDR(h); + size_t bytes = hhdr -> hb_sz; + + bytes += HBLKSIZE-1; + bytes &= ~(HBLKSIZE-1); + GC_bytes_in_used_blocks += bytes; +} + +STATIC void GC_check_blocks(void) +{ + word bytes_in_free_blocks = GC_large_free_bytes; + + GC_bytes_in_used_blocks = 0; + GC_apply_to_all_blocks(GC_add_block, (word)0); + GC_COND_LOG_PRINTF("GC_bytes_in_used_blocks = %lu," + " bytes_in_free_blocks = %lu, heapsize = %lu\n", + (unsigned long)GC_bytes_in_used_blocks, + (unsigned long)bytes_in_free_blocks, + (unsigned long)GC_heapsize); + if (GC_bytes_in_used_blocks + bytes_in_free_blocks != GC_heapsize) { + GC_err_printf("LOST SOME BLOCKS!!\n"); + } +} + +/* Should be called immediately after GC_read_dirty and GC_read_changed. */ +void GC_check_dirty(void) +{ + int index; + unsigned i; + struct hblk *h; + ptr_t start; + + GC_check_blocks(); + + GC_n_dirty_errors = 0; + GC_n_faulted_dirty_errors = 0; + GC_n_changed_errors = 0; + GC_n_clean = 0; + GC_n_dirty = 0; + + index = 0; + for (i = 0; i < GC_n_heap_sects; i++) { + start = GC_heap_sects[i].hs_start; + for (h = (struct hblk *)start; + (word)h < (word)(start + GC_heap_sects[i].hs_bytes); h++) { + GC_update_check_page(h, index); + index++; + if (index >= NSUMS) goto out; + } + } +out: + GC_COND_LOG_PRINTF("Checked %lu clean and %lu dirty pages\n", + GC_n_clean, GC_n_dirty); + if (GC_n_dirty_errors > 0) { + GC_err_printf("Found %d dirty bit errors (%d were faulted)\n", + GC_n_dirty_errors, GC_n_faulted_dirty_errors); + } + if (GC_n_changed_errors > 0) { + GC_err_printf("Found %d changed bit errors\n", GC_n_changed_errors); + GC_err_printf( + "These may be benign (provoked by nonpointer changes)\n"); +# ifdef THREADS + GC_err_printf( + "Also expect 1 per thread currently allocating a stubborn obj\n"); +# endif + } + for (i = 0; i < GC_n_faulted; ++i) { + GC_faulted[i] = 0; /* Don't expose block pointers to GC */ + } + GC_n_faulted = 0; +} + +#endif /* CHECKSUMS */ diff --git a/compile b/compile new file mode 100755 index 0000000..a85b723 --- /dev/null +++ b/compile @@ -0,0 +1,347 @@ +#! /bin/sh +# Wrapper for compilers which do not understand '-c -o'. + +scriptversion=2012-10-14.11; # UTC + +# Copyright (C) 1999-2014 Free Software Foundation, Inc. +# Written by Tom Tromey . +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that program. + +# This file is maintained in Automake, please report +# bugs to or send patches to +# . + +nl=' +' + +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent tools from complaining about whitespace usage. +IFS=" "" $nl" + +file_conv= + +# func_file_conv build_file lazy +# Convert a $build file to $host form and store it in $file +# Currently only supports Windows hosts. If the determined conversion +# type is listed in (the comma separated) LAZY, no conversion will +# take place. +func_file_conv () +{ + file=$1 + case $file in + / | /[!/]*) # absolute file, and not a UNC file + if test -z "$file_conv"; then + # lazily determine how to convert abs files + case `uname -s` in + MINGW*) + file_conv=mingw + ;; + CYGWIN*) + file_conv=cygwin + ;; + *) + file_conv=wine + ;; + esac + fi + case $file_conv/,$2, in + *,$file_conv,*) + ;; + mingw/*) + file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'` + ;; + cygwin/*) + file=`cygpath -m "$file" || echo "$file"` + ;; + wine/*) + file=`winepath -w "$file" || echo "$file"` + ;; + esac + ;; + esac +} + +# func_cl_dashL linkdir +# Make cl look for libraries in LINKDIR +func_cl_dashL () +{ + func_file_conv "$1" + if test -z "$lib_path"; then + lib_path=$file + else + lib_path="$lib_path;$file" + fi + linker_opts="$linker_opts -LIBPATH:$file" +} + +# func_cl_dashl library +# Do a library search-path lookup for cl +func_cl_dashl () +{ + lib=$1 + found=no + save_IFS=$IFS + IFS=';' + for dir in $lib_path $LIB + do + IFS=$save_IFS + if $shared && test -f "$dir/$lib.dll.lib"; then + found=yes + lib=$dir/$lib.dll.lib + break + fi + if test -f "$dir/$lib.lib"; then + found=yes + lib=$dir/$lib.lib + break + fi + if test -f "$dir/lib$lib.a"; then + found=yes + lib=$dir/lib$lib.a + break + fi + done + IFS=$save_IFS + + if test "$found" != yes; then + lib=$lib.lib + fi +} + +# func_cl_wrapper cl arg... +# Adjust compile command to suit cl +func_cl_wrapper () +{ + # Assume a capable shell + lib_path= + shared=: + linker_opts= + for arg + do + if test -n "$eat"; then + eat= + else + case $1 in + -o) + # configure might choose to run compile as 'compile cc -o foo foo.c'. + eat=1 + case $2 in + *.o | *.[oO][bB][jJ]) + func_file_conv "$2" + set x "$@" -Fo"$file" + shift + ;; + *) + func_file_conv "$2" + set x "$@" -Fe"$file" + shift + ;; + esac + ;; + -I) + eat=1 + func_file_conv "$2" mingw + set x "$@" -I"$file" + shift + ;; + -I*) + func_file_conv "${1#-I}" mingw + set x "$@" -I"$file" + shift + ;; + -l) + eat=1 + func_cl_dashl "$2" + set x "$@" "$lib" + shift + ;; + -l*) + func_cl_dashl "${1#-l}" + set x "$@" "$lib" + shift + ;; + -L) + eat=1 + func_cl_dashL "$2" + ;; + -L*) + func_cl_dashL "${1#-L}" + ;; + -static) + shared=false + ;; + -Wl,*) + arg=${1#-Wl,} + save_ifs="$IFS"; IFS=',' + for flag in $arg; do + IFS="$save_ifs" + linker_opts="$linker_opts $flag" + done + IFS="$save_ifs" + ;; + -Xlinker) + eat=1 + linker_opts="$linker_opts $2" + ;; + -*) + set x "$@" "$1" + shift + ;; + *.cc | *.CC | *.cxx | *.CXX | *.[cC]++) + func_file_conv "$1" + set x "$@" -Tp"$file" + shift + ;; + *.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO]) + func_file_conv "$1" mingw + set x "$@" "$file" + shift + ;; + *) + set x "$@" "$1" + shift + ;; + esac + fi + shift + done + if test -n "$linker_opts"; then + linker_opts="-link$linker_opts" + fi + exec "$@" $linker_opts + exit 1 +} + +eat= + +case $1 in + '') + echo "$0: No command. Try '$0 --help' for more information." 1>&2 + exit 1; + ;; + -h | --h*) + cat <<\EOF +Usage: compile [--help] [--version] PROGRAM [ARGS] + +Wrapper for compilers which do not understand '-c -o'. +Remove '-o dest.o' from ARGS, run PROGRAM with the remaining +arguments, and rename the output as expected. + +If you are trying to build a whole package this is not the +right script to run: please start by reading the file 'INSTALL'. + +Report bugs to . +EOF + exit $? + ;; + -v | --v*) + echo "compile $scriptversion" + exit $? + ;; + cl | *[/\\]cl | cl.exe | *[/\\]cl.exe ) + func_cl_wrapper "$@" # Doesn't return... + ;; +esac + +ofile= +cfile= + +for arg +do + if test -n "$eat"; then + eat= + else + case $1 in + -o) + # configure might choose to run compile as 'compile cc -o foo foo.c'. + # So we strip '-o arg' only if arg is an object. + eat=1 + case $2 in + *.o | *.obj) + ofile=$2 + ;; + *) + set x "$@" -o "$2" + shift + ;; + esac + ;; + *.c) + cfile=$1 + set x "$@" "$1" + shift + ;; + *) + set x "$@" "$1" + shift + ;; + esac + fi + shift +done + +if test -z "$ofile" || test -z "$cfile"; then + # If no '-o' option was seen then we might have been invoked from a + # pattern rule where we don't need one. That is ok -- this is a + # normal compilation that the losing compiler can handle. If no + # '.c' file was seen then we are probably linking. That is also + # ok. + exec "$@" +fi + +# Name of file we expect compiler to create. +cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'` + +# Create the lock directory. +# Note: use '[/\\:.-]' here to ensure that we don't use the same name +# that we are using for the .o file. Also, base the name on the expected +# object file name, since that is what matters with a parallel build. +lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d +while true; do + if mkdir "$lockdir" >/dev/null 2>&1; then + break + fi + sleep 1 +done +# FIXME: race condition here if user kills between mkdir and trap. +trap "rmdir '$lockdir'; exit 1" 1 2 15 + +# Run the compile. +"$@" +ret=$? + +if test -f "$cofile"; then + test "$cofile" = "$ofile" || mv "$cofile" "$ofile" +elif test -f "${cofile}bj"; then + test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile" +fi + +rmdir "$lockdir" +exit $ret + +# Local Variables: +# mode: shell-script +# sh-indentation: 2 +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "scriptversion=" +# time-stamp-format: "%:y-%02m-%02d.%02H" +# time-stamp-time-zone: "UTC" +# time-stamp-end: "; # UTC" +# End: diff --git a/config.guess b/config.guess new file mode 100755 index 0000000..6c32c86 --- /dev/null +++ b/config.guess @@ -0,0 +1,1421 @@ +#! /bin/sh +# Attempt to guess a canonical system name. +# Copyright 1992-2014 Free Software Foundation, Inc. + +timestamp='2014-11-04' + +# This file is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, see . +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that +# program. This Exception is an additional permission under section 7 +# of the GNU General Public License, version 3 ("GPLv3"). +# +# Originally written by Per Bothner; maintained since 2000 by Ben Elliston. +# +# You can get the latest version of this script from: +# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD +# +# Please send patches to . + + +me=`echo "$0" | sed -e 's,.*/,,'` + +usage="\ +Usage: $0 [OPTION] + +Output the configuration name of the system \`$me' is run on. + +Operation modes: + -h, --help print this help, then exit + -t, --time-stamp print date of last modification, then exit + -v, --version print version number, then exit + +Report bugs and patches to ." + +version="\ +GNU config.guess ($timestamp) + +Originally written by Per Bothner. +Copyright 1992-2014 Free Software Foundation, Inc. + +This is free software; see the source for copying conditions. There is NO +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." + +help=" +Try \`$me --help' for more information." + +# Parse command line +while test $# -gt 0 ; do + case $1 in + --time-stamp | --time* | -t ) + echo "$timestamp" ; exit ;; + --version | -v ) + echo "$version" ; exit ;; + --help | --h* | -h ) + echo "$usage"; exit ;; + -- ) # Stop option processing + shift; break ;; + - ) # Use stdin as input. + break ;; + -* ) + echo "$me: invalid option $1$help" >&2 + exit 1 ;; + * ) + break ;; + esac +done + +if test $# != 0; then + echo "$me: too many arguments$help" >&2 + exit 1 +fi + +trap 'exit 1' 1 2 15 + +# CC_FOR_BUILD -- compiler used by this script. Note that the use of a +# compiler to aid in system detection is discouraged as it requires +# temporary files to be created and, as you can see below, it is a +# headache to deal with in a portable fashion. + +# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still +# use `HOST_CC' if defined, but it is deprecated. + +# Portable tmp directory creation inspired by the Autoconf team. + +set_cc_for_build=' +trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ; +trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ; +: ${TMPDIR=/tmp} ; + { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } || + { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } || + { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } || + { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ; +dummy=$tmp/dummy ; +tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ; +case $CC_FOR_BUILD,$HOST_CC,$CC in + ,,) echo "int x;" > $dummy.c ; + for c in cc gcc c89 c99 ; do + if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then + CC_FOR_BUILD="$c"; break ; + fi ; + done ; + if test x"$CC_FOR_BUILD" = x ; then + CC_FOR_BUILD=no_compiler_found ; + fi + ;; + ,,*) CC_FOR_BUILD=$CC ;; + ,*,*) CC_FOR_BUILD=$HOST_CC ;; +esac ; set_cc_for_build= ;' + +# This is needed to find uname on a Pyramid OSx when run in the BSD universe. +# (ghazi@noc.rutgers.edu 1994-08-24) +if (test -f /.attbin/uname) >/dev/null 2>&1 ; then + PATH=$PATH:/.attbin ; export PATH +fi + +UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown +UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown +UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown +UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown + +case "${UNAME_SYSTEM}" in +Linux|GNU|GNU/*) + # If the system lacks a compiler, then just pick glibc. + # We could probably try harder. + LIBC=gnu + + eval $set_cc_for_build + cat <<-EOF > $dummy.c + #include + #if defined(__UCLIBC__) + LIBC=uclibc + #elif defined(__dietlibc__) + LIBC=dietlibc + #else + LIBC=gnu + #endif + EOF + eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC' | sed 's, ,,g'` + ;; +esac + +# Note: order is significant - the case branches are not exclusive. + +case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in + *:NetBSD:*:*) + # NetBSD (nbsd) targets should (where applicable) match one or + # more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*, + # *-*-netbsdecoff* and *-*-netbsd*. For targets that recently + # switched to ELF, *-*-netbsd* would select the old + # object file format. This provides both forward + # compatibility and a consistent mechanism for selecting the + # object file format. + # + # Note: NetBSD doesn't particularly care about the vendor + # portion of the name. We always set it to "unknown". + sysctl="sysctl -n hw.machine_arch" + UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \ + /usr/sbin/$sysctl 2>/dev/null || echo unknown)` + case "${UNAME_MACHINE_ARCH}" in + armeb) machine=armeb-unknown ;; + arm*) machine=arm-unknown ;; + sh3el) machine=shl-unknown ;; + sh3eb) machine=sh-unknown ;; + sh5el) machine=sh5le-unknown ;; + *) machine=${UNAME_MACHINE_ARCH}-unknown ;; + esac + # The Operating System including object format, if it has switched + # to ELF recently, or will in the future. + case "${UNAME_MACHINE_ARCH}" in + arm*|i386|m68k|ns32k|sh3*|sparc|vax) + eval $set_cc_for_build + if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ELF__ + then + # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout). + # Return netbsd for either. FIX? + os=netbsd + else + os=netbsdelf + fi + ;; + *) + os=netbsd + ;; + esac + # The OS release + # Debian GNU/NetBSD machines have a different userland, and + # thus, need a distinct triplet. However, they do not need + # kernel version information, so it can be replaced with a + # suitable tag, in the style of linux-gnu. + case "${UNAME_VERSION}" in + Debian*) + release='-gnu' + ;; + *) + release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'` + ;; + esac + # Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM: + # contains redundant information, the shorter form: + # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used. + echo "${machine}-${os}${release}" + exit ;; + *:Bitrig:*:*) + UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'` + echo ${UNAME_MACHINE_ARCH}-unknown-bitrig${UNAME_RELEASE} + exit ;; + *:OpenBSD:*:*) + UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'` + echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE} + exit ;; + *:ekkoBSD:*:*) + echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE} + exit ;; + *:SolidBSD:*:*) + echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE} + exit ;; + macppc:MirBSD:*:*) + echo powerpc-unknown-mirbsd${UNAME_RELEASE} + exit ;; + *:MirBSD:*:*) + echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE} + exit ;; + alpha:OSF1:*:*) + case $UNAME_RELEASE in + *4.0) + UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'` + ;; + *5.*) + UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'` + ;; + esac + # According to Compaq, /usr/sbin/psrinfo has been available on + # OSF/1 and Tru64 systems produced since 1995. I hope that + # covers most systems running today. This code pipes the CPU + # types through head -n 1, so we only detect the type of CPU 0. + ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^ The alpha \(.*\) processor.*$/\1/p' | head -n 1` + case "$ALPHA_CPU_TYPE" in + "EV4 (21064)") + UNAME_MACHINE="alpha" ;; + "EV4.5 (21064)") + UNAME_MACHINE="alpha" ;; + "LCA4 (21066/21068)") + UNAME_MACHINE="alpha" ;; + "EV5 (21164)") + UNAME_MACHINE="alphaev5" ;; + "EV5.6 (21164A)") + UNAME_MACHINE="alphaev56" ;; + "EV5.6 (21164PC)") + UNAME_MACHINE="alphapca56" ;; + "EV5.7 (21164PC)") + UNAME_MACHINE="alphapca57" ;; + "EV6 (21264)") + UNAME_MACHINE="alphaev6" ;; + "EV6.7 (21264A)") + UNAME_MACHINE="alphaev67" ;; + "EV6.8CB (21264C)") + UNAME_MACHINE="alphaev68" ;; + "EV6.8AL (21264B)") + UNAME_MACHINE="alphaev68" ;; + "EV6.8CX (21264D)") + UNAME_MACHINE="alphaev68" ;; + "EV6.9A (21264/EV69A)") + UNAME_MACHINE="alphaev69" ;; + "EV7 (21364)") + UNAME_MACHINE="alphaev7" ;; + "EV7.9 (21364A)") + UNAME_MACHINE="alphaev79" ;; + esac + # A Pn.n version is a patched version. + # A Vn.n version is a released version. + # A Tn.n version is a released field test version. + # A Xn.n version is an unreleased experimental baselevel. + # 1.2 uses "1.2" for uname -r. + echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'` + # Reset EXIT trap before exiting to avoid spurious non-zero exit code. + exitcode=$? + trap '' 0 + exit $exitcode ;; + Alpha\ *:Windows_NT*:*) + # How do we know it's Interix rather than the generic POSIX subsystem? + # Should we change UNAME_MACHINE based on the output of uname instead + # of the specific Alpha model? + echo alpha-pc-interix + exit ;; + 21064:Windows_NT:50:3) + echo alpha-dec-winnt3.5 + exit ;; + Amiga*:UNIX_System_V:4.0:*) + echo m68k-unknown-sysv4 + exit ;; + *:[Aa]miga[Oo][Ss]:*:*) + echo ${UNAME_MACHINE}-unknown-amigaos + exit ;; + *:[Mm]orph[Oo][Ss]:*:*) + echo ${UNAME_MACHINE}-unknown-morphos + exit ;; + *:OS/390:*:*) + echo i370-ibm-openedition + exit ;; + *:z/VM:*:*) + echo s390-ibm-zvmoe + exit ;; + *:OS400:*:*) + echo powerpc-ibm-os400 + exit ;; + arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*) + echo arm-acorn-riscix${UNAME_RELEASE} + exit ;; + arm*:riscos:*:*|arm*:RISCOS:*:*) + echo arm-unknown-riscos + exit ;; + SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*) + echo hppa1.1-hitachi-hiuxmpp + exit ;; + Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*) + # akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE. + if test "`(/bin/universe) 2>/dev/null`" = att ; then + echo pyramid-pyramid-sysv3 + else + echo pyramid-pyramid-bsd + fi + exit ;; + NILE*:*:*:dcosx) + echo pyramid-pyramid-svr4 + exit ;; + DRS?6000:unix:4.0:6*) + echo sparc-icl-nx6 + exit ;; + DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*) + case `/usr/bin/uname -p` in + sparc) echo sparc-icl-nx7; exit ;; + esac ;; + s390x:SunOS:*:*) + echo ${UNAME_MACHINE}-ibm-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + sun4H:SunOS:5.*:*) + echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*) + echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*) + echo i386-pc-auroraux${UNAME_RELEASE} + exit ;; + i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*) + eval $set_cc_for_build + SUN_ARCH="i386" + # If there is a compiler, see if it is configured for 64-bit objects. + # Note that the Sun cc does not turn __LP64__ into 1 like gcc does. + # This test works for both compilers. + if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then + if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \ + (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \ + grep IS_64BIT_ARCH >/dev/null + then + SUN_ARCH="x86_64" + fi + fi + echo ${SUN_ARCH}-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + sun4*:SunOS:6*:*) + # According to config.sub, this is the proper way to canonicalize + # SunOS6. Hard to guess exactly what SunOS6 will be like, but + # it's likely to be more like Solaris than SunOS4. + echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + sun4*:SunOS:*:*) + case "`/usr/bin/arch -k`" in + Series*|S4*) + UNAME_RELEASE=`uname -v` + ;; + esac + # Japanese Language versions have a version number like `4.1.3-JL'. + echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'` + exit ;; + sun3*:SunOS:*:*) + echo m68k-sun-sunos${UNAME_RELEASE} + exit ;; + sun*:*:4.2BSD:*) + UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null` + test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3 + case "`/bin/arch`" in + sun3) + echo m68k-sun-sunos${UNAME_RELEASE} + ;; + sun4) + echo sparc-sun-sunos${UNAME_RELEASE} + ;; + esac + exit ;; + aushp:SunOS:*:*) + echo sparc-auspex-sunos${UNAME_RELEASE} + exit ;; + # The situation for MiNT is a little confusing. The machine name + # can be virtually everything (everything which is not + # "atarist" or "atariste" at least should have a processor + # > m68000). The system name ranges from "MiNT" over "FreeMiNT" + # to the lowercase version "mint" (or "freemint"). Finally + # the system name "TOS" denotes a system which is actually not + # MiNT. But MiNT is downward compatible to TOS, so this should + # be no problem. + atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*) + echo m68k-atari-mint${UNAME_RELEASE} + exit ;; + atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*) + echo m68k-atari-mint${UNAME_RELEASE} + exit ;; + *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*) + echo m68k-atari-mint${UNAME_RELEASE} + exit ;; + milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*) + echo m68k-milan-mint${UNAME_RELEASE} + exit ;; + hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*) + echo m68k-hades-mint${UNAME_RELEASE} + exit ;; + *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*) + echo m68k-unknown-mint${UNAME_RELEASE} + exit ;; + m68k:machten:*:*) + echo m68k-apple-machten${UNAME_RELEASE} + exit ;; + powerpc:machten:*:*) + echo powerpc-apple-machten${UNAME_RELEASE} + exit ;; + RISC*:Mach:*:*) + echo mips-dec-mach_bsd4.3 + exit ;; + RISC*:ULTRIX:*:*) + echo mips-dec-ultrix${UNAME_RELEASE} + exit ;; + VAX*:ULTRIX*:*:*) + echo vax-dec-ultrix${UNAME_RELEASE} + exit ;; + 2020:CLIX:*:* | 2430:CLIX:*:*) + echo clipper-intergraph-clix${UNAME_RELEASE} + exit ;; + mips:*:*:UMIPS | mips:*:*:RISCos) + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c +#ifdef __cplusplus +#include /* for printf() prototype */ + int main (int argc, char *argv[]) { +#else + int main (argc, argv) int argc; char *argv[]; { +#endif + #if defined (host_mips) && defined (MIPSEB) + #if defined (SYSTYPE_SYSV) + printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0); + #endif + #if defined (SYSTYPE_SVR4) + printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0); + #endif + #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) + printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0); + #endif + #endif + exit (-1); + } +EOF + $CC_FOR_BUILD -o $dummy $dummy.c && + dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` && + SYSTEM_NAME=`$dummy $dummyarg` && + { echo "$SYSTEM_NAME"; exit; } + echo mips-mips-riscos${UNAME_RELEASE} + exit ;; + Motorola:PowerMAX_OS:*:*) + echo powerpc-motorola-powermax + exit ;; + Motorola:*:4.3:PL8-*) + echo powerpc-harris-powermax + exit ;; + Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*) + echo powerpc-harris-powermax + exit ;; + Night_Hawk:Power_UNIX:*:*) + echo powerpc-harris-powerunix + exit ;; + m88k:CX/UX:7*:*) + echo m88k-harris-cxux7 + exit ;; + m88k:*:4*:R4*) + echo m88k-motorola-sysv4 + exit ;; + m88k:*:3*:R3*) + echo m88k-motorola-sysv3 + exit ;; + AViiON:dgux:*:*) + # DG/UX returns AViiON for all architectures + UNAME_PROCESSOR=`/usr/bin/uname -p` + if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ] + then + if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \ + [ ${TARGET_BINARY_INTERFACE}x = x ] + then + echo m88k-dg-dgux${UNAME_RELEASE} + else + echo m88k-dg-dguxbcs${UNAME_RELEASE} + fi + else + echo i586-dg-dgux${UNAME_RELEASE} + fi + exit ;; + M88*:DolphinOS:*:*) # DolphinOS (SVR3) + echo m88k-dolphin-sysv3 + exit ;; + M88*:*:R3*:*) + # Delta 88k system running SVR3 + echo m88k-motorola-sysv3 + exit ;; + XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) + echo m88k-tektronix-sysv3 + exit ;; + Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) + echo m68k-tektronix-bsd + exit ;; + *:IRIX*:*:*) + echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'` + exit ;; + ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. + echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id + exit ;; # Note that: echo "'`uname -s`'" gives 'AIX ' + i*86:AIX:*:*) + echo i386-ibm-aix + exit ;; + ia64:AIX:*:*) + if [ -x /usr/bin/oslevel ] ; then + IBM_REV=`/usr/bin/oslevel` + else + IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} + fi + echo ${UNAME_MACHINE}-ibm-aix${IBM_REV} + exit ;; + *:AIX:2:3) + if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c + #include + + main() + { + if (!__power_pc()) + exit(1); + puts("powerpc-ibm-aix3.2.5"); + exit(0); + } +EOF + if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` + then + echo "$SYSTEM_NAME" + else + echo rs6000-ibm-aix3.2.5 + fi + elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then + echo rs6000-ibm-aix3.2.4 + else + echo rs6000-ibm-aix3.2 + fi + exit ;; + *:AIX:*:[4567]) + IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` + if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then + IBM_ARCH=rs6000 + else + IBM_ARCH=powerpc + fi + if [ -x /usr/bin/lslpp ] ; then + IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | + awk -F: '{ print $3 }' | sed s/[0-9]*$/0/` + else + IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} + fi + echo ${IBM_ARCH}-ibm-aix${IBM_REV} + exit ;; + *:AIX:*:*) + echo rs6000-ibm-aix + exit ;; + ibmrt:4.4BSD:*|romp-ibm:BSD:*) + echo romp-ibm-bsd4.4 + exit ;; + ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and + echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to + exit ;; # report: romp-ibm BSD 4.3 + *:BOSX:*:*) + echo rs6000-bull-bosx + exit ;; + DPX/2?00:B.O.S.:*:*) + echo m68k-bull-sysv3 + exit ;; + 9000/[34]??:4.3bsd:1.*:*) + echo m68k-hp-bsd + exit ;; + hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) + echo m68k-hp-bsd4.4 + exit ;; + 9000/[34678]??:HP-UX:*:*) + HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` + case "${UNAME_MACHINE}" in + 9000/31? ) HP_ARCH=m68000 ;; + 9000/[34]?? ) HP_ARCH=m68k ;; + 9000/[678][0-9][0-9]) + if [ -x /usr/bin/getconf ]; then + sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` + sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` + case "${sc_cpu_version}" in + 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0 + 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1 + 532) # CPU_PA_RISC2_0 + case "${sc_kernel_bits}" in + 32) HP_ARCH="hppa2.0n" ;; + 64) HP_ARCH="hppa2.0w" ;; + '') HP_ARCH="hppa2.0" ;; # HP-UX 10.20 + esac ;; + esac + fi + if [ "${HP_ARCH}" = "" ]; then + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c + + #define _HPUX_SOURCE + #include + #include + + int main () + { + #if defined(_SC_KERNEL_BITS) + long bits = sysconf(_SC_KERNEL_BITS); + #endif + long cpu = sysconf (_SC_CPU_VERSION); + + switch (cpu) + { + case CPU_PA_RISC1_0: puts ("hppa1.0"); break; + case CPU_PA_RISC1_1: puts ("hppa1.1"); break; + case CPU_PA_RISC2_0: + #if defined(_SC_KERNEL_BITS) + switch (bits) + { + case 64: puts ("hppa2.0w"); break; + case 32: puts ("hppa2.0n"); break; + default: puts ("hppa2.0"); break; + } break; + #else /* !defined(_SC_KERNEL_BITS) */ + puts ("hppa2.0"); break; + #endif + default: puts ("hppa1.0"); break; + } + exit (0); + } +EOF + (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy` + test -z "$HP_ARCH" && HP_ARCH=hppa + fi ;; + esac + if [ ${HP_ARCH} = "hppa2.0w" ] + then + eval $set_cc_for_build + + # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating + # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler + # generating 64-bit code. GNU and HP use different nomenclature: + # + # $ CC_FOR_BUILD=cc ./config.guess + # => hppa2.0w-hp-hpux11.23 + # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess + # => hppa64-hp-hpux11.23 + + if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | + grep -q __LP64__ + then + HP_ARCH="hppa2.0w" + else + HP_ARCH="hppa64" + fi + fi + echo ${HP_ARCH}-hp-hpux${HPUX_REV} + exit ;; + ia64:HP-UX:*:*) + HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` + echo ia64-hp-hpux${HPUX_REV} + exit ;; + 3050*:HI-UX:*:*) + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c + #include + int + main () + { + long cpu = sysconf (_SC_CPU_VERSION); + /* The order matters, because CPU_IS_HP_MC68K erroneously returns + true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct + results, however. */ + if (CPU_IS_PA_RISC (cpu)) + { + switch (cpu) + { + case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; + case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; + case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; + default: puts ("hppa-hitachi-hiuxwe2"); break; + } + } + else if (CPU_IS_HP_MC68K (cpu)) + puts ("m68k-hitachi-hiuxwe2"); + else puts ("unknown-hitachi-hiuxwe2"); + exit (0); + } +EOF + $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` && + { echo "$SYSTEM_NAME"; exit; } + echo unknown-hitachi-hiuxwe2 + exit ;; + 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* ) + echo hppa1.1-hp-bsd + exit ;; + 9000/8??:4.3bsd:*:*) + echo hppa1.0-hp-bsd + exit ;; + *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) + echo hppa1.0-hp-mpeix + exit ;; + hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* ) + echo hppa1.1-hp-osf + exit ;; + hp8??:OSF1:*:*) + echo hppa1.0-hp-osf + exit ;; + i*86:OSF1:*:*) + if [ -x /usr/sbin/sysversion ] ; then + echo ${UNAME_MACHINE}-unknown-osf1mk + else + echo ${UNAME_MACHINE}-unknown-osf1 + fi + exit ;; + parisc*:Lites*:*:*) + echo hppa1.1-hp-lites + exit ;; + C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) + echo c1-convex-bsd + exit ;; + C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) + if getsysinfo -f scalar_acc + then echo c32-convex-bsd + else echo c2-convex-bsd + fi + exit ;; + C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) + echo c34-convex-bsd + exit ;; + C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) + echo c38-convex-bsd + exit ;; + C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) + echo c4-convex-bsd + exit ;; + CRAY*Y-MP:*:*:*) + echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*[A-Z]90:*:*:*) + echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \ + | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ + -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ + -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*TS:*:*:*) + echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*T3E:*:*:*) + echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' + exit ;; + CRAY*SV1:*:*:*) + echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' + exit ;; + *:UNICOS/mp:*:*) + echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' + exit ;; + F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) + FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'` + FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` + FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'` + echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" + exit ;; + 5000:UNIX_System_V:4.*:*) + FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` + FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'` + echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" + exit ;; + i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) + echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE} + exit ;; + sparc*:BSD/OS:*:*) + echo sparc-unknown-bsdi${UNAME_RELEASE} + exit ;; + *:BSD/OS:*:*) + echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE} + exit ;; + *:FreeBSD:*:*) + UNAME_PROCESSOR=`/usr/bin/uname -p` + case ${UNAME_PROCESSOR} in + amd64) + echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; + *) + echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; + esac + exit ;; + i*:CYGWIN*:*) + echo ${UNAME_MACHINE}-pc-cygwin + exit ;; + *:MINGW64*:*) + echo ${UNAME_MACHINE}-pc-mingw64 + exit ;; + *:MINGW*:*) + echo ${UNAME_MACHINE}-pc-mingw32 + exit ;; + *:MSYS*:*) + echo ${UNAME_MACHINE}-pc-msys + exit ;; + i*:windows32*:*) + # uname -m includes "-pc" on this system. + echo ${UNAME_MACHINE}-mingw32 + exit ;; + i*:PW*:*) + echo ${UNAME_MACHINE}-pc-pw32 + exit ;; + *:Interix*:*) + case ${UNAME_MACHINE} in + x86) + echo i586-pc-interix${UNAME_RELEASE} + exit ;; + authenticamd | genuineintel | EM64T) + echo x86_64-unknown-interix${UNAME_RELEASE} + exit ;; + IA64) + echo ia64-unknown-interix${UNAME_RELEASE} + exit ;; + esac ;; + [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*) + echo i${UNAME_MACHINE}-pc-mks + exit ;; + 8664:Windows_NT:*) + echo x86_64-pc-mks + exit ;; + i*:Windows_NT*:* | Pentium*:Windows_NT*:*) + # How do we know it's Interix rather than the generic POSIX subsystem? + # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we + # UNAME_MACHINE based on the output of uname instead of i386? + echo i586-pc-interix + exit ;; + i*:UWIN*:*) + echo ${UNAME_MACHINE}-pc-uwin + exit ;; + amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) + echo x86_64-unknown-cygwin + exit ;; + p*:CYGWIN*:*) + echo powerpcle-unknown-cygwin + exit ;; + prep*:SunOS:5.*:*) + echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` + exit ;; + *:GNU:*:*) + # the GNU system + echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-${LIBC}`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'` + exit ;; + *:GNU/*:*:*) + # other systems with GNU libc and userland + echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-${LIBC} + exit ;; + i*86:Minix:*:*) + echo ${UNAME_MACHINE}-pc-minix + exit ;; + aarch64:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + aarch64_be:Linux:*:*) + UNAME_MACHINE=aarch64_be + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + alpha:Linux:*:*) + case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in + EV5) UNAME_MACHINE=alphaev5 ;; + EV56) UNAME_MACHINE=alphaev56 ;; + PCA56) UNAME_MACHINE=alphapca56 ;; + PCA57) UNAME_MACHINE=alphapca56 ;; + EV6) UNAME_MACHINE=alphaev6 ;; + EV67) UNAME_MACHINE=alphaev67 ;; + EV68*) UNAME_MACHINE=alphaev68 ;; + esac + objdump --private-headers /bin/sh | grep -q ld.so.1 + if test "$?" = 0 ; then LIBC="gnulibc1" ; fi + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + arc:Linux:*:* | arceb:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + arm*:Linux:*:*) + eval $set_cc_for_build + if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ARM_EABI__ + then + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + else + if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ + | grep -q __ARM_PCS_VFP + then + echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabi + else + echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabihf + fi + fi + exit ;; + avr32*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + cris:Linux:*:*) + echo ${UNAME_MACHINE}-axis-linux-${LIBC} + exit ;; + crisv32:Linux:*:*) + echo ${UNAME_MACHINE}-axis-linux-${LIBC} + exit ;; + frv:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + hexagon:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + i*86:Linux:*:*) + echo ${UNAME_MACHINE}-pc-linux-${LIBC} + exit ;; + ia64:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + m32r*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + m68*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + mips:Linux:*:* | mips64:Linux:*:*) + eval $set_cc_for_build + sed 's/^ //' << EOF >$dummy.c + #undef CPU + #undef ${UNAME_MACHINE} + #undef ${UNAME_MACHINE}el + #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) + CPU=${UNAME_MACHINE}el + #else + #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) + CPU=${UNAME_MACHINE} + #else + CPU= + #endif + #endif +EOF + eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'` + test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; } + ;; + openrisc*:Linux:*:*) + echo or1k-unknown-linux-${LIBC} + exit ;; + or32:Linux:*:* | or1k*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + padre:Linux:*:*) + echo sparc-unknown-linux-${LIBC} + exit ;; + parisc64:Linux:*:* | hppa64:Linux:*:*) + echo hppa64-unknown-linux-${LIBC} + exit ;; + parisc:Linux:*:* | hppa:Linux:*:*) + # Look for CPU level + case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in + PA7*) echo hppa1.1-unknown-linux-${LIBC} ;; + PA8*) echo hppa2.0-unknown-linux-${LIBC} ;; + *) echo hppa-unknown-linux-${LIBC} ;; + esac + exit ;; + ppc64:Linux:*:*) + echo powerpc64-unknown-linux-${LIBC} + exit ;; + ppc:Linux:*:*) + echo powerpc-unknown-linux-${LIBC} + exit ;; + ppc64le:Linux:*:*) + echo powerpc64le-unknown-linux-${LIBC} + exit ;; + ppcle:Linux:*:*) + echo powerpcle-unknown-linux-${LIBC} + exit ;; + s390:Linux:*:* | s390x:Linux:*:*) + echo ${UNAME_MACHINE}-ibm-linux-${LIBC} + exit ;; + sh64*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + sh*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + sparc:Linux:*:* | sparc64:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + tile*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + vax:Linux:*:*) + echo ${UNAME_MACHINE}-dec-linux-${LIBC} + exit ;; + x86_64:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + xtensa*:Linux:*:*) + echo ${UNAME_MACHINE}-unknown-linux-${LIBC} + exit ;; + i*86:DYNIX/ptx:4*:*) + # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. + # earlier versions are messed up and put the nodename in both + # sysname and nodename. + echo i386-sequent-sysv4 + exit ;; + i*86:UNIX_SV:4.2MP:2.*) + # Unixware is an offshoot of SVR4, but it has its own version + # number series starting with 2... + # I am not positive that other SVR4 systems won't match this, + # I just have to hope. -- rms. + # Use sysv4.2uw... so that sysv4* matches it. + echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION} + exit ;; + i*86:OS/2:*:*) + # If we were able to find `uname', then EMX Unix compatibility + # is probably installed. + echo ${UNAME_MACHINE}-pc-os2-emx + exit ;; + i*86:XTS-300:*:STOP) + echo ${UNAME_MACHINE}-unknown-stop + exit ;; + i*86:atheos:*:*) + echo ${UNAME_MACHINE}-unknown-atheos + exit ;; + i*86:syllable:*:*) + echo ${UNAME_MACHINE}-pc-syllable + exit ;; + i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*) + echo i386-unknown-lynxos${UNAME_RELEASE} + exit ;; + i*86:*DOS:*:*) + echo ${UNAME_MACHINE}-pc-msdosdjgpp + exit ;; + i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*) + UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'` + if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then + echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL} + else + echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL} + fi + exit ;; + i*86:*:5:[678]*) + # UnixWare 7.x, OpenUNIX and OpenServer 6. + case `/bin/uname -X | grep "^Machine"` in + *486*) UNAME_MACHINE=i486 ;; + *Pentium) UNAME_MACHINE=i586 ;; + *Pent*|*Celeron) UNAME_MACHINE=i686 ;; + esac + echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} + exit ;; + i*86:*:3.2:*) + if test -f /usr/options/cb.name; then + UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then + UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` + (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 + (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ + && UNAME_MACHINE=i586 + (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ + && UNAME_MACHINE=i686 + (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ + && UNAME_MACHINE=i686 + echo ${UNAME_MACHINE}-pc-sco$UNAME_REL + else + echo ${UNAME_MACHINE}-pc-sysv32 + fi + exit ;; + pc:*:*:*) + # Left here for compatibility: + # uname -m prints for DJGPP always 'pc', but it prints nothing about + # the processor, so we play safe by assuming i586. + # Note: whatever this is, it MUST be the same as what config.sub + # prints for the "djgpp" host, or else GDB configury will decide that + # this is a cross-build. + echo i586-pc-msdosdjgpp + exit ;; + Intel:Mach:3*:*) + echo i386-pc-mach3 + exit ;; + paragon:*:*:*) + echo i860-intel-osf1 + exit ;; + i860:*:4.*:*) # i860-SVR4 + if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then + echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4 + else # Add other i860-SVR4 vendors below as they are discovered. + echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4 + fi + exit ;; + mini*:CTIX:SYS*5:*) + # "miniframe" + echo m68010-convergent-sysv + exit ;; + mc68k:UNIX:SYSTEM5:3.51m) + echo m68k-convergent-sysv + exit ;; + M680?0:D-NIX:5.3:*) + echo m68k-diab-dnix + exit ;; + M68*:*:R3V[5678]*:*) + test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; + 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) + OS_REL='' + test -r /etc/.relid \ + && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4.3${OS_REL}; exit; } + /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ + && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; + 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4; exit; } ;; + NCR*:*:4.2:* | MPRAS*:*:4.2:*) + OS_REL='.3' + test -r /etc/.relid \ + && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` + /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ + && { echo i486-ncr-sysv4.3${OS_REL}; exit; } + /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ + && { echo i586-ncr-sysv4.3${OS_REL}; exit; } + /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \ + && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; + m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) + echo m68k-unknown-lynxos${UNAME_RELEASE} + exit ;; + mc68030:UNIX_System_V:4.*:*) + echo m68k-atari-sysv4 + exit ;; + TSUNAMI:LynxOS:2.*:*) + echo sparc-unknown-lynxos${UNAME_RELEASE} + exit ;; + rs6000:LynxOS:2.*:*) + echo rs6000-unknown-lynxos${UNAME_RELEASE} + exit ;; + PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*) + echo powerpc-unknown-lynxos${UNAME_RELEASE} + exit ;; + SM[BE]S:UNIX_SV:*:*) + echo mips-dde-sysv${UNAME_RELEASE} + exit ;; + RM*:ReliantUNIX-*:*:*) + echo mips-sni-sysv4 + exit ;; + RM*:SINIX-*:*:*) + echo mips-sni-sysv4 + exit ;; + *:SINIX-*:*:*) + if uname -p 2>/dev/null >/dev/null ; then + UNAME_MACHINE=`(uname -p) 2>/dev/null` + echo ${UNAME_MACHINE}-sni-sysv4 + else + echo ns32k-sni-sysv + fi + exit ;; + PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort + # says + echo i586-unisys-sysv4 + exit ;; + *:UNIX_System_V:4*:FTX*) + # From Gerald Hewes . + # How about differentiating between stratus architectures? -djm + echo hppa1.1-stratus-sysv4 + exit ;; + *:*:*:FTX*) + # From seanf@swdc.stratus.com. + echo i860-stratus-sysv4 + exit ;; + i*86:VOS:*:*) + # From Paul.Green@stratus.com. + echo ${UNAME_MACHINE}-stratus-vos + exit ;; + *:VOS:*:*) + # From Paul.Green@stratus.com. + echo hppa1.1-stratus-vos + exit ;; + mc68*:A/UX:*:*) + echo m68k-apple-aux${UNAME_RELEASE} + exit ;; + news*:NEWS-OS:6*:*) + echo mips-sony-newsos6 + exit ;; + R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) + if [ -d /usr/nec ]; then + echo mips-nec-sysv${UNAME_RELEASE} + else + echo mips-unknown-sysv${UNAME_RELEASE} + fi + exit ;; + BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. + echo powerpc-be-beos + exit ;; + BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. + echo powerpc-apple-beos + exit ;; + BePC:BeOS:*:*) # BeOS running on Intel PC compatible. + echo i586-pc-beos + exit ;; + BePC:Haiku:*:*) # Haiku running on Intel PC compatible. + echo i586-pc-haiku + exit ;; + x86_64:Haiku:*:*) + echo x86_64-unknown-haiku + exit ;; + SX-4:SUPER-UX:*:*) + echo sx4-nec-superux${UNAME_RELEASE} + exit ;; + SX-5:SUPER-UX:*:*) + echo sx5-nec-superux${UNAME_RELEASE} + exit ;; + SX-6:SUPER-UX:*:*) + echo sx6-nec-superux${UNAME_RELEASE} + exit ;; + SX-7:SUPER-UX:*:*) + echo sx7-nec-superux${UNAME_RELEASE} + exit ;; + SX-8:SUPER-UX:*:*) + echo sx8-nec-superux${UNAME_RELEASE} + exit ;; + SX-8R:SUPER-UX:*:*) + echo sx8r-nec-superux${UNAME_RELEASE} + exit ;; + Power*:Rhapsody:*:*) + echo powerpc-apple-rhapsody${UNAME_RELEASE} + exit ;; + *:Rhapsody:*:*) + echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE} + exit ;; + *:Darwin:*:*) + UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown + eval $set_cc_for_build + if test "$UNAME_PROCESSOR" = unknown ; then + UNAME_PROCESSOR=powerpc + fi + if test `echo "$UNAME_RELEASE" | sed -e 's/\..*//'` -le 10 ; then + if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then + if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \ + (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \ + grep IS_64BIT_ARCH >/dev/null + then + case $UNAME_PROCESSOR in + i386) UNAME_PROCESSOR=x86_64 ;; + powerpc) UNAME_PROCESSOR=powerpc64 ;; + esac + fi + fi + elif test "$UNAME_PROCESSOR" = i386 ; then + # Avoid executing cc on OS X 10.9, as it ships with a stub + # that puts up a graphical alert prompting to install + # developer tools. Any system running Mac OS X 10.7 or + # later (Darwin 11 and later) is required to have a 64-bit + # processor. This is not true of the ARM version of Darwin + # that Apple uses in portable devices. + UNAME_PROCESSOR=x86_64 + fi + echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE} + exit ;; + *:procnto*:*:* | *:QNX:[0123456789]*:*) + UNAME_PROCESSOR=`uname -p` + if test "$UNAME_PROCESSOR" = "x86"; then + UNAME_PROCESSOR=i386 + UNAME_MACHINE=pc + fi + echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE} + exit ;; + *:QNX:*:4*) + echo i386-pc-qnx + exit ;; + NEO-?:NONSTOP_KERNEL:*:*) + echo neo-tandem-nsk${UNAME_RELEASE} + exit ;; + NSE-*:NONSTOP_KERNEL:*:*) + echo nse-tandem-nsk${UNAME_RELEASE} + exit ;; + NSR-?:NONSTOP_KERNEL:*:*) + echo nsr-tandem-nsk${UNAME_RELEASE} + exit ;; + *:NonStop-UX:*:*) + echo mips-compaq-nonstopux + exit ;; + BS2000:POSIX*:*:*) + echo bs2000-siemens-sysv + exit ;; + DS/*:UNIX_System_V:*:*) + echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE} + exit ;; + *:Plan9:*:*) + # "uname -m" is not consistent, so use $cputype instead. 386 + # is converted to i386 for consistency with other x86 + # operating systems. + if test "$cputype" = "386"; then + UNAME_MACHINE=i386 + else + UNAME_MACHINE="$cputype" + fi + echo ${UNAME_MACHINE}-unknown-plan9 + exit ;; + *:TOPS-10:*:*) + echo pdp10-unknown-tops10 + exit ;; + *:TENEX:*:*) + echo pdp10-unknown-tenex + exit ;; + KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) + echo pdp10-dec-tops20 + exit ;; + XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) + echo pdp10-xkl-tops20 + exit ;; + *:TOPS-20:*:*) + echo pdp10-unknown-tops20 + exit ;; + *:ITS:*:*) + echo pdp10-unknown-its + exit ;; + SEI:*:*:SEIUX) + echo mips-sei-seiux${UNAME_RELEASE} + exit ;; + *:DragonFly:*:*) + echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` + exit ;; + *:*VMS:*:*) + UNAME_MACHINE=`(uname -p) 2>/dev/null` + case "${UNAME_MACHINE}" in + A*) echo alpha-dec-vms ; exit ;; + I*) echo ia64-dec-vms ; exit ;; + V*) echo vax-dec-vms ; exit ;; + esac ;; + *:XENIX:*:SysV) + echo i386-pc-xenix + exit ;; + i*86:skyos:*:*) + echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//' + exit ;; + i*86:rdos:*:*) + echo ${UNAME_MACHINE}-pc-rdos + exit ;; + i*86:AROS:*:*) + echo ${UNAME_MACHINE}-pc-aros + exit ;; + x86_64:VMkernel:*:*) + echo ${UNAME_MACHINE}-unknown-esx + exit ;; +esac + +cat >&2 < in order to provide the needed +information to handle your system. + +config.guess timestamp = $timestamp + +uname -m = `(uname -m) 2>/dev/null || echo unknown` +uname -r = `(uname -r) 2>/dev/null || echo unknown` +uname -s = `(uname -s) 2>/dev/null || echo unknown` +uname -v = `(uname -v) 2>/dev/null || echo unknown` + +/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` +/bin/uname -X = `(/bin/uname -X) 2>/dev/null` + +hostinfo = `(hostinfo) 2>/dev/null` +/bin/universe = `(/bin/universe) 2>/dev/null` +/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` +/bin/arch = `(/bin/arch) 2>/dev/null` +/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` +/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` + +UNAME_MACHINE = ${UNAME_MACHINE} +UNAME_RELEASE = ${UNAME_RELEASE} +UNAME_SYSTEM = ${UNAME_SYSTEM} +UNAME_VERSION = ${UNAME_VERSION} +EOF + +exit 1 + +# Local variables: +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "timestamp='" +# time-stamp-format: "%:y-%02m-%02d" +# time-stamp-end: "'" +# End: diff --git a/config.sub b/config.sub new file mode 100755 index 0000000..7ffe373 --- /dev/null +++ b/config.sub @@ -0,0 +1,1807 @@ +#! /bin/sh +# Configuration validation subroutine script. +# Copyright 1992-2014 Free Software Foundation, Inc. + +timestamp='2014-12-03' + +# This file is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, see . +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that +# program. This Exception is an additional permission under section 7 +# of the GNU General Public License, version 3 ("GPLv3"). + + +# Please send patches to . +# +# Configuration subroutine to validate and canonicalize a configuration type. +# Supply the specified configuration type as an argument. +# If it is invalid, we print an error message on stderr and exit with code 1. +# Otherwise, we print the canonical config type on stdout and succeed. + +# You can get the latest version of this script from: +# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD + +# This file is supposed to be the same for all GNU packages +# and recognize all the CPU types, system types and aliases +# that are meaningful with *any* GNU software. +# Each package is responsible for reporting which valid configurations +# it does not support. The user should be able to distinguish +# a failure to support a valid configuration from a meaningless +# configuration. + +# The goal of this file is to map all the various variations of a given +# machine specification into a single specification in the form: +# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM +# or in some cases, the newer four-part form: +# CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM +# It is wrong to echo any other type of specification. + +me=`echo "$0" | sed -e 's,.*/,,'` + +usage="\ +Usage: $0 [OPTION] CPU-MFR-OPSYS + $0 [OPTION] ALIAS + +Canonicalize a configuration name. + +Operation modes: + -h, --help print this help, then exit + -t, --time-stamp print date of last modification, then exit + -v, --version print version number, then exit + +Report bugs and patches to ." + +version="\ +GNU config.sub ($timestamp) + +Copyright 1992-2014 Free Software Foundation, Inc. + +This is free software; see the source for copying conditions. There is NO +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." + +help=" +Try \`$me --help' for more information." + +# Parse command line +while test $# -gt 0 ; do + case $1 in + --time-stamp | --time* | -t ) + echo "$timestamp" ; exit ;; + --version | -v ) + echo "$version" ; exit ;; + --help | --h* | -h ) + echo "$usage"; exit ;; + -- ) # Stop option processing + shift; break ;; + - ) # Use stdin as input. + break ;; + -* ) + echo "$me: invalid option $1$help" + exit 1 ;; + + *local*) + # First pass through any local machine types. + echo $1 + exit ;; + + * ) + break ;; + esac +done + +case $# in + 0) echo "$me: missing argument$help" >&2 + exit 1;; + 1) ;; + *) echo "$me: too many arguments$help" >&2 + exit 1;; +esac + +# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any). +# Here we must recognize all the valid KERNEL-OS combinations. +maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'` +case $maybe_os in + nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \ + linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \ + knetbsd*-gnu* | netbsd*-gnu* | \ + kopensolaris*-gnu* | \ + storm-chaos* | os2-emx* | rtmk-nova*) + os=-$maybe_os + basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'` + ;; + android-linux) + os=-linux-android + basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown + ;; + *) + basic_machine=`echo $1 | sed 's/-[^-]*$//'` + if [ $basic_machine != $1 ] + then os=`echo $1 | sed 's/.*-/-/'` + else os=; fi + ;; +esac + +### Let's recognize common machines as not being operating systems so +### that things like config.sub decstation-3100 work. We also +### recognize some manufacturers as not being operating systems, so we +### can provide default operating systems below. +case $os in + -sun*os*) + # Prevent following clause from handling this invalid input. + ;; + -dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \ + -att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \ + -unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \ + -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\ + -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \ + -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \ + -apple | -axis | -knuth | -cray | -microblaze*) + os= + basic_machine=$1 + ;; + -bluegene*) + os=-cnk + ;; + -sim | -cisco | -oki | -wec | -winbond) + os= + basic_machine=$1 + ;; + -scout) + ;; + -wrs) + os=-vxworks + basic_machine=$1 + ;; + -chorusos*) + os=-chorusos + basic_machine=$1 + ;; + -chorusrdb) + os=-chorusrdb + basic_machine=$1 + ;; + -hiux*) + os=-hiuxwe2 + ;; + -sco6) + os=-sco5v6 + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco5) + os=-sco3.2v5 + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco4) + os=-sco3.2v4 + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco3.2.[4-9]*) + os=`echo $os | sed -e 's/sco3.2./sco3.2v/'` + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco3.2v[4-9]*) + # Don't forget version if it is 3.2v4 or newer. + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco5v6*) + # Don't forget version if it is 3.2v4 or newer. + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -sco*) + os=-sco3.2v2 + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -udk*) + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -isc) + os=-isc2.2 + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -clix*) + basic_machine=clipper-intergraph + ;; + -isc*) + basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` + ;; + -lynx*178) + os=-lynxos178 + ;; + -lynx*5) + os=-lynxos5 + ;; + -lynx*) + os=-lynxos + ;; + -ptx*) + basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'` + ;; + -windowsnt*) + os=`echo $os | sed -e 's/windowsnt/winnt/'` + ;; + -psos*) + os=-psos + ;; + -mint | -mint[0-9]*) + basic_machine=m68k-atari + os=-mint + ;; +esac + +# Decode aliases for certain CPU-COMPANY combinations. +case $basic_machine in + # Recognize the basic CPU types without company name. + # Some are omitted here because they have special meanings below. + 1750a | 580 \ + | a29k \ + | aarch64 | aarch64_be \ + | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \ + | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \ + | am33_2.0 \ + | arc | arceb \ + | arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \ + | avr | avr32 \ + | be32 | be64 \ + | bfin \ + | c4x | c8051 | clipper \ + | d10v | d30v | dlx | dsp16xx \ + | epiphany \ + | fido | fr30 | frv \ + | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \ + | hexagon \ + | i370 | i860 | i960 | ia64 \ + | ip2k | iq2000 \ + | k1om \ + | le32 | le64 \ + | lm32 \ + | m32c | m32r | m32rle | m68000 | m68k | m88k \ + | maxq | mb | microblaze | microblazeel | mcore | mep | metag \ + | mips | mipsbe | mipseb | mipsel | mipsle \ + | mips16 \ + | mips64 | mips64el \ + | mips64octeon | mips64octeonel \ + | mips64orion | mips64orionel \ + | mips64r5900 | mips64r5900el \ + | mips64vr | mips64vrel \ + | mips64vr4100 | mips64vr4100el \ + | mips64vr4300 | mips64vr4300el \ + | mips64vr5000 | mips64vr5000el \ + | mips64vr5900 | mips64vr5900el \ + | mipsisa32 | mipsisa32el \ + | mipsisa32r2 | mipsisa32r2el \ + | mipsisa32r6 | mipsisa32r6el \ + | mipsisa64 | mipsisa64el \ + | mipsisa64r2 | mipsisa64r2el \ + | mipsisa64r6 | mipsisa64r6el \ + | mipsisa64sb1 | mipsisa64sb1el \ + | mipsisa64sr71k | mipsisa64sr71kel \ + | mipsr5900 | mipsr5900el \ + | mipstx39 | mipstx39el \ + | mn10200 | mn10300 \ + | moxie \ + | mt \ + | msp430 \ + | nds32 | nds32le | nds32be \ + | nios | nios2 | nios2eb | nios2el \ + | ns16k | ns32k \ + | open8 | or1k | or1knd | or32 \ + | pdp10 | pdp11 | pj | pjl \ + | powerpc | powerpc64 | powerpc64le | powerpcle \ + | pyramid \ + | riscv32 | riscv64 \ + | rl78 | rx \ + | score \ + | sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \ + | sh64 | sh64le \ + | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \ + | sparcv8 | sparcv9 | sparcv9b | sparcv9v \ + | spu \ + | tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \ + | ubicom32 \ + | v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \ + | visium \ + | we32k \ + | x86 | xc16x | xstormy16 | xtensa \ + | z8k | z80) + basic_machine=$basic_machine-unknown + ;; + c54x) + basic_machine=tic54x-unknown + ;; + c55x) + basic_machine=tic55x-unknown + ;; + c6x) + basic_machine=tic6x-unknown + ;; + leon|leon[3-9]) + basic_machine=sparc-$basic_machine + ;; + m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip) + basic_machine=$basic_machine-unknown + os=-none + ;; + m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k) + ;; + ms1) + basic_machine=mt-unknown + ;; + + strongarm | thumb | xscale) + basic_machine=arm-unknown + ;; + xgate) + basic_machine=$basic_machine-unknown + os=-none + ;; + xscaleeb) + basic_machine=armeb-unknown + ;; + + xscaleel) + basic_machine=armel-unknown + ;; + + # We use `pc' rather than `unknown' + # because (1) that's what they normally are, and + # (2) the word "unknown" tends to confuse beginning users. + i*86 | x86_64) + basic_machine=$basic_machine-pc + ;; + # Object if more than one company name word. + *-*-*) + echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2 + exit 1 + ;; + # Recognize the basic CPU types with company name. + 580-* \ + | a29k-* \ + | aarch64-* | aarch64_be-* \ + | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \ + | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \ + | alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \ + | arm-* | armbe-* | armle-* | armeb-* | armv*-* \ + | avr-* | avr32-* \ + | be32-* | be64-* \ + | bfin-* | bs2000-* \ + | c[123]* | c30-* | [cjt]90-* | c4x-* \ + | c8051-* | clipper-* | craynv-* | cydra-* \ + | d10v-* | d30v-* | dlx-* \ + | elxsi-* \ + | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \ + | h8300-* | h8500-* \ + | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \ + | hexagon-* \ + | i*86-* | i860-* | i960-* | ia64-* \ + | ip2k-* | iq2000-* \ + | k1om-* \ + | le32-* | le64-* \ + | lm32-* \ + | m32c-* | m32r-* | m32rle-* \ + | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \ + | m88110-* | m88k-* | maxq-* | mcore-* | metag-* \ + | microblaze-* | microblazeel-* \ + | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \ + | mips16-* \ + | mips64-* | mips64el-* \ + | mips64octeon-* | mips64octeonel-* \ + | mips64orion-* | mips64orionel-* \ + | mips64r5900-* | mips64r5900el-* \ + | mips64vr-* | mips64vrel-* \ + | mips64vr4100-* | mips64vr4100el-* \ + | mips64vr4300-* | mips64vr4300el-* \ + | mips64vr5000-* | mips64vr5000el-* \ + | mips64vr5900-* | mips64vr5900el-* \ + | mipsisa32-* | mipsisa32el-* \ + | mipsisa32r2-* | mipsisa32r2el-* \ + | mipsisa32r6-* | mipsisa32r6el-* \ + | mipsisa64-* | mipsisa64el-* \ + | mipsisa64r2-* | mipsisa64r2el-* \ + | mipsisa64r6-* | mipsisa64r6el-* \ + | mipsisa64sb1-* | mipsisa64sb1el-* \ + | mipsisa64sr71k-* | mipsisa64sr71kel-* \ + | mipsr5900-* | mipsr5900el-* \ + | mipstx39-* | mipstx39el-* \ + | mmix-* \ + | mt-* \ + | msp430-* \ + | nds32-* | nds32le-* | nds32be-* \ + | nios-* | nios2-* | nios2eb-* | nios2el-* \ + | none-* | np1-* | ns16k-* | ns32k-* \ + | open8-* \ + | or1k*-* \ + | orion-* \ + | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \ + | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \ + | pyramid-* \ + | rl78-* | romp-* | rs6000-* | rx-* \ + | sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \ + | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \ + | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \ + | sparclite-* \ + | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx?-* \ + | tahoe-* \ + | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \ + | tile*-* \ + | tron-* \ + | ubicom32-* \ + | v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \ + | vax-* \ + | visium-* \ + | we32k-* \ + | x86-* | x86_64-* | xc16x-* | xps100-* \ + | xstormy16-* | xtensa*-* \ + | ymp-* \ + | z8k-* | z80-*) + ;; + # Recognize the basic CPU types without company name, with glob match. + xtensa*) + basic_machine=$basic_machine-unknown + ;; + # Recognize the various machine names and aliases which stand + # for a CPU type and a company and sometimes even an OS. + 386bsd) + basic_machine=i386-unknown + os=-bsd + ;; + 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc) + basic_machine=m68000-att + ;; + 3b*) + basic_machine=we32k-att + ;; + a29khif) + basic_machine=a29k-amd + os=-udi + ;; + abacus) + basic_machine=abacus-unknown + ;; + adobe68k) + basic_machine=m68010-adobe + os=-scout + ;; + alliant | fx80) + basic_machine=fx80-alliant + ;; + altos | altos3068) + basic_machine=m68k-altos + ;; + am29k) + basic_machine=a29k-none + os=-bsd + ;; + amd64) + basic_machine=x86_64-pc + ;; + amd64-*) + basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + amdahl) + basic_machine=580-amdahl + os=-sysv + ;; + amiga | amiga-*) + basic_machine=m68k-unknown + ;; + amigaos | amigados) + basic_machine=m68k-unknown + os=-amigaos + ;; + amigaunix | amix) + basic_machine=m68k-unknown + os=-sysv4 + ;; + apollo68) + basic_machine=m68k-apollo + os=-sysv + ;; + apollo68bsd) + basic_machine=m68k-apollo + os=-bsd + ;; + aros) + basic_machine=i386-pc + os=-aros + ;; + aux) + basic_machine=m68k-apple + os=-aux + ;; + balance) + basic_machine=ns32k-sequent + os=-dynix + ;; + blackfin) + basic_machine=bfin-unknown + os=-linux + ;; + blackfin-*) + basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'` + os=-linux + ;; + bluegene*) + basic_machine=powerpc-ibm + os=-cnk + ;; + c54x-*) + basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + c55x-*) + basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + c6x-*) + basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + c90) + basic_machine=c90-cray + os=-unicos + ;; + cegcc) + basic_machine=arm-unknown + os=-cegcc + ;; + convex-c1) + basic_machine=c1-convex + os=-bsd + ;; + convex-c2) + basic_machine=c2-convex + os=-bsd + ;; + convex-c32) + basic_machine=c32-convex + os=-bsd + ;; + convex-c34) + basic_machine=c34-convex + os=-bsd + ;; + convex-c38) + basic_machine=c38-convex + os=-bsd + ;; + cray | j90) + basic_machine=j90-cray + os=-unicos + ;; + craynv) + basic_machine=craynv-cray + os=-unicosmp + ;; + cr16 | cr16-*) + basic_machine=cr16-unknown + os=-elf + ;; + crds | unos) + basic_machine=m68k-crds + ;; + crisv32 | crisv32-* | etraxfs*) + basic_machine=crisv32-axis + ;; + cris | cris-* | etrax*) + basic_machine=cris-axis + ;; + crx) + basic_machine=crx-unknown + os=-elf + ;; + da30 | da30-*) + basic_machine=m68k-da30 + ;; + decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn) + basic_machine=mips-dec + ;; + decsystem10* | dec10*) + basic_machine=pdp10-dec + os=-tops10 + ;; + decsystem20* | dec20*) + basic_machine=pdp10-dec + os=-tops20 + ;; + delta | 3300 | motorola-3300 | motorola-delta \ + | 3300-motorola | delta-motorola) + basic_machine=m68k-motorola + ;; + delta88) + basic_machine=m88k-motorola + os=-sysv3 + ;; + dicos) + basic_machine=i686-pc + os=-dicos + ;; + djgpp) + basic_machine=i586-pc + os=-msdosdjgpp + ;; + dpx20 | dpx20-*) + basic_machine=rs6000-bull + os=-bosx + ;; + dpx2* | dpx2*-bull) + basic_machine=m68k-bull + os=-sysv3 + ;; + ebmon29k) + basic_machine=a29k-amd + os=-ebmon + ;; + elxsi) + basic_machine=elxsi-elxsi + os=-bsd + ;; + encore | umax | mmax) + basic_machine=ns32k-encore + ;; + es1800 | OSE68k | ose68k | ose | OSE) + basic_machine=m68k-ericsson + os=-ose + ;; + fx2800) + basic_machine=i860-alliant + ;; + genix) + basic_machine=ns32k-ns + ;; + gmicro) + basic_machine=tron-gmicro + os=-sysv + ;; + go32) + basic_machine=i386-pc + os=-go32 + ;; + h3050r* | hiux*) + basic_machine=hppa1.1-hitachi + os=-hiuxwe2 + ;; + h8300hms) + basic_machine=h8300-hitachi + os=-hms + ;; + h8300xray) + basic_machine=h8300-hitachi + os=-xray + ;; + h8500hms) + basic_machine=h8500-hitachi + os=-hms + ;; + harris) + basic_machine=m88k-harris + os=-sysv3 + ;; + hp300-*) + basic_machine=m68k-hp + ;; + hp300bsd) + basic_machine=m68k-hp + os=-bsd + ;; + hp300hpux) + basic_machine=m68k-hp + os=-hpux + ;; + hp3k9[0-9][0-9] | hp9[0-9][0-9]) + basic_machine=hppa1.0-hp + ;; + hp9k2[0-9][0-9] | hp9k31[0-9]) + basic_machine=m68000-hp + ;; + hp9k3[2-9][0-9]) + basic_machine=m68k-hp + ;; + hp9k6[0-9][0-9] | hp6[0-9][0-9]) + basic_machine=hppa1.0-hp + ;; + hp9k7[0-79][0-9] | hp7[0-79][0-9]) + basic_machine=hppa1.1-hp + ;; + hp9k78[0-9] | hp78[0-9]) + # FIXME: really hppa2.0-hp + basic_machine=hppa1.1-hp + ;; + hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893) + # FIXME: really hppa2.0-hp + basic_machine=hppa1.1-hp + ;; + hp9k8[0-9][13679] | hp8[0-9][13679]) + basic_machine=hppa1.1-hp + ;; + hp9k8[0-9][0-9] | hp8[0-9][0-9]) + basic_machine=hppa1.0-hp + ;; + hppa-next) + os=-nextstep3 + ;; + hppaosf) + basic_machine=hppa1.1-hp + os=-osf + ;; + hppro) + basic_machine=hppa1.1-hp + os=-proelf + ;; + i370-ibm* | ibm*) + basic_machine=i370-ibm + ;; + i*86v32) + basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` + os=-sysv32 + ;; + i*86v4*) + basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` + os=-sysv4 + ;; + i*86v) + basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` + os=-sysv + ;; + i*86sol2) + basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` + os=-solaris2 + ;; + i386mach) + basic_machine=i386-mach + os=-mach + ;; + i386-vsta | vsta) + basic_machine=i386-unknown + os=-vsta + ;; + iris | iris4d) + basic_machine=mips-sgi + case $os in + -irix*) + ;; + *) + os=-irix4 + ;; + esac + ;; + isi68 | isi) + basic_machine=m68k-isi + os=-sysv + ;; + leon-*|leon[3-9]-*) + basic_machine=sparc-`echo $basic_machine | sed 's/-.*//'` + ;; + m68knommu) + basic_machine=m68k-unknown + os=-linux + ;; + m68knommu-*) + basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'` + os=-linux + ;; + m88k-omron*) + basic_machine=m88k-omron + ;; + magnum | m3230) + basic_machine=mips-mips + os=-sysv + ;; + merlin) + basic_machine=ns32k-utek + os=-sysv + ;; + microblaze*) + basic_machine=microblaze-xilinx + ;; + mingw64) + basic_machine=x86_64-pc + os=-mingw64 + ;; + mingw32) + basic_machine=i686-pc + os=-mingw32 + ;; + mingw32ce) + basic_machine=arm-unknown + os=-mingw32ce + ;; + miniframe) + basic_machine=m68000-convergent + ;; + *mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*) + basic_machine=m68k-atari + os=-mint + ;; + mips3*-*) + basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'` + ;; + mips3*) + basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown + ;; + monitor) + basic_machine=m68k-rom68k + os=-coff + ;; + morphos) + basic_machine=powerpc-unknown + os=-morphos + ;; + moxiebox) + basic_machine=moxie-unknown + os=-moxiebox + ;; + msdos) + basic_machine=i386-pc + os=-msdos + ;; + ms1-*) + basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'` + ;; + msys) + basic_machine=i686-pc + os=-msys + ;; + mvs) + basic_machine=i370-ibm + os=-mvs + ;; + nacl) + basic_machine=le32-unknown + os=-nacl + ;; + ncr3000) + basic_machine=i486-ncr + os=-sysv4 + ;; + netbsd386) + basic_machine=i386-unknown + os=-netbsd + ;; + netwinder) + basic_machine=armv4l-rebel + os=-linux + ;; + news | news700 | news800 | news900) + basic_machine=m68k-sony + os=-newsos + ;; + news1000) + basic_machine=m68030-sony + os=-newsos + ;; + news-3600 | risc-news) + basic_machine=mips-sony + os=-newsos + ;; + necv70) + basic_machine=v70-nec + os=-sysv + ;; + next | m*-next ) + basic_machine=m68k-next + case $os in + -nextstep* ) + ;; + -ns2*) + os=-nextstep2 + ;; + *) + os=-nextstep3 + ;; + esac + ;; + nh3000) + basic_machine=m68k-harris + os=-cxux + ;; + nh[45]000) + basic_machine=m88k-harris + os=-cxux + ;; + nindy960) + basic_machine=i960-intel + os=-nindy + ;; + mon960) + basic_machine=i960-intel + os=-mon960 + ;; + nonstopux) + basic_machine=mips-compaq + os=-nonstopux + ;; + np1) + basic_machine=np1-gould + ;; + neo-tandem) + basic_machine=neo-tandem + ;; + nse-tandem) + basic_machine=nse-tandem + ;; + nsr-tandem) + basic_machine=nsr-tandem + ;; + op50n-* | op60c-*) + basic_machine=hppa1.1-oki + os=-proelf + ;; + openrisc | openrisc-*) + basic_machine=or32-unknown + ;; + os400) + basic_machine=powerpc-ibm + os=-os400 + ;; + OSE68000 | ose68000) + basic_machine=m68000-ericsson + os=-ose + ;; + os68k) + basic_machine=m68k-none + os=-os68k + ;; + pa-hitachi) + basic_machine=hppa1.1-hitachi + os=-hiuxwe2 + ;; + paragon) + basic_machine=i860-intel + os=-osf + ;; + parisc) + basic_machine=hppa-unknown + os=-linux + ;; + parisc-*) + basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'` + os=-linux + ;; + pbd) + basic_machine=sparc-tti + ;; + pbb) + basic_machine=m68k-tti + ;; + pc532 | pc532-*) + basic_machine=ns32k-pc532 + ;; + pc98) + basic_machine=i386-pc + ;; + pc98-*) + basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + pentium | p5 | k5 | k6 | nexgen | viac3) + basic_machine=i586-pc + ;; + pentiumpro | p6 | 6x86 | athlon | athlon_*) + basic_machine=i686-pc + ;; + pentiumii | pentium2 | pentiumiii | pentium3) + basic_machine=i686-pc + ;; + pentium4) + basic_machine=i786-pc + ;; + pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*) + basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + pentiumpro-* | p6-* | 6x86-* | athlon-*) + basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*) + basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + pentium4-*) + basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + pn) + basic_machine=pn-gould + ;; + power) basic_machine=power-ibm + ;; + ppc | ppcbe) basic_machine=powerpc-unknown + ;; + ppc-* | ppcbe-*) + basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + ppcle | powerpclittle | ppc-le | powerpc-little) + basic_machine=powerpcle-unknown + ;; + ppcle-* | powerpclittle-*) + basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + ppc64) basic_machine=powerpc64-unknown + ;; + ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + ppc64le | powerpc64little | ppc64-le | powerpc64-little) + basic_machine=powerpc64le-unknown + ;; + ppc64le-* | powerpc64little-*) + basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + ps2) + basic_machine=i386-ibm + ;; + pw32) + basic_machine=i586-unknown + os=-pw32 + ;; + rdos | rdos64) + basic_machine=x86_64-pc + os=-rdos + ;; + rdos32) + basic_machine=i386-pc + os=-rdos + ;; + rom68k) + basic_machine=m68k-rom68k + os=-coff + ;; + rm[46]00) + basic_machine=mips-siemens + ;; + rtpc | rtpc-*) + basic_machine=romp-ibm + ;; + s390 | s390-*) + basic_machine=s390-ibm + ;; + s390x | s390x-*) + basic_machine=s390x-ibm + ;; + sa29200) + basic_machine=a29k-amd + os=-udi + ;; + sb1) + basic_machine=mipsisa64sb1-unknown + ;; + sb1el) + basic_machine=mipsisa64sb1el-unknown + ;; + sde) + basic_machine=mipsisa32-sde + os=-elf + ;; + sei) + basic_machine=mips-sei + os=-seiux + ;; + sequent) + basic_machine=i386-sequent + ;; + sh) + basic_machine=sh-hitachi + os=-hms + ;; + sh5el) + basic_machine=sh5le-unknown + ;; + sh64) + basic_machine=sh64-unknown + ;; + sparclite-wrs | simso-wrs) + basic_machine=sparclite-wrs + os=-vxworks + ;; + sps7) + basic_machine=m68k-bull + os=-sysv2 + ;; + spur) + basic_machine=spur-unknown + ;; + st2000) + basic_machine=m68k-tandem + ;; + stratus) + basic_machine=i860-stratus + os=-sysv4 + ;; + strongarm-* | thumb-*) + basic_machine=arm-`echo $basic_machine | sed 's/^[^-]*-//'` + ;; + sun2) + basic_machine=m68000-sun + ;; + sun2os3) + basic_machine=m68000-sun + os=-sunos3 + ;; + sun2os4) + basic_machine=m68000-sun + os=-sunos4 + ;; + sun3os3) + basic_machine=m68k-sun + os=-sunos3 + ;; + sun3os4) + basic_machine=m68k-sun + os=-sunos4 + ;; + sun4os3) + basic_machine=sparc-sun + os=-sunos3 + ;; + sun4os4) + basic_machine=sparc-sun + os=-sunos4 + ;; + sun4sol2) + basic_machine=sparc-sun + os=-solaris2 + ;; + sun3 | sun3-*) + basic_machine=m68k-sun + ;; + sun4) + basic_machine=sparc-sun + ;; + sun386 | sun386i | roadrunner) + basic_machine=i386-sun + ;; + sv1) + basic_machine=sv1-cray + os=-unicos + ;; + symmetry) + basic_machine=i386-sequent + os=-dynix + ;; + t3e) + basic_machine=alphaev5-cray + os=-unicos + ;; + t90) + basic_machine=t90-cray + os=-unicos + ;; + tile*) + basic_machine=$basic_machine-unknown + os=-linux-gnu + ;; + tx39) + basic_machine=mipstx39-unknown + ;; + tx39el) + basic_machine=mipstx39el-unknown + ;; + toad1) + basic_machine=pdp10-xkl + os=-tops20 + ;; + tower | tower-32) + basic_machine=m68k-ncr + ;; + tpf) + basic_machine=s390x-ibm + os=-tpf + ;; + udi29k) + basic_machine=a29k-amd + os=-udi + ;; + ultra3) + basic_machine=a29k-nyu + os=-sym1 + ;; + v810 | necv810) + basic_machine=v810-nec + os=-none + ;; + vaxv) + basic_machine=vax-dec + os=-sysv + ;; + vms) + basic_machine=vax-dec + os=-vms + ;; + vpp*|vx|vx-*) + basic_machine=f301-fujitsu + ;; + vxworks960) + basic_machine=i960-wrs + os=-vxworks + ;; + vxworks68) + basic_machine=m68k-wrs + os=-vxworks + ;; + vxworks29k) + basic_machine=a29k-wrs + os=-vxworks + ;; + w65*) + basic_machine=w65-wdc + os=-none + ;; + w89k-*) + basic_machine=hppa1.1-winbond + os=-proelf + ;; + xbox) + basic_machine=i686-pc + os=-mingw32 + ;; + xps | xps100) + basic_machine=xps100-honeywell + ;; + xscale-* | xscalee[bl]-*) + basic_machine=`echo $basic_machine | sed 's/^xscale/arm/'` + ;; + ymp) + basic_machine=ymp-cray + os=-unicos + ;; + z8k-*-coff) + basic_machine=z8k-unknown + os=-sim + ;; + z80-*-coff) + basic_machine=z80-unknown + os=-sim + ;; + none) + basic_machine=none-none + os=-none + ;; + +# Here we handle the default manufacturer of certain CPU types. It is in +# some cases the only manufacturer, in others, it is the most popular. + w89k) + basic_machine=hppa1.1-winbond + ;; + op50n) + basic_machine=hppa1.1-oki + ;; + op60c) + basic_machine=hppa1.1-oki + ;; + romp) + basic_machine=romp-ibm + ;; + mmix) + basic_machine=mmix-knuth + ;; + rs6000) + basic_machine=rs6000-ibm + ;; + vax) + basic_machine=vax-dec + ;; + pdp10) + # there are many clones, so DEC is not a safe bet + basic_machine=pdp10-unknown + ;; + pdp11) + basic_machine=pdp11-dec + ;; + we32k) + basic_machine=we32k-att + ;; + sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele) + basic_machine=sh-unknown + ;; + sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v) + basic_machine=sparc-sun + ;; + cydra) + basic_machine=cydra-cydrome + ;; + orion) + basic_machine=orion-highlevel + ;; + orion105) + basic_machine=clipper-highlevel + ;; + mac | mpw | mac-mpw) + basic_machine=m68k-apple + ;; + pmac | pmac-mpw) + basic_machine=powerpc-apple + ;; + *-unknown) + # Make sure to match an already-canonicalized machine name. + ;; + *) + echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2 + exit 1 + ;; +esac + +# Here we canonicalize certain aliases for manufacturers. +case $basic_machine in + *-digital*) + basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'` + ;; + *-commodore*) + basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'` + ;; + *) + ;; +esac + +# Decode manufacturer-specific aliases for certain operating systems. + +if [ x"$os" != x"" ] +then +case $os in + # First match some system type aliases + # that might get confused with valid system types. + # -solaris* is a basic system type, with this one exception. + -auroraux) + os=-auroraux + ;; + -solaris1 | -solaris1.*) + os=`echo $os | sed -e 's|solaris1|sunos4|'` + ;; + -solaris) + os=-solaris2 + ;; + -svr4*) + os=-sysv4 + ;; + -unixware*) + os=-sysv4.2uw + ;; + -gnu/linux*) + os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'` + ;; + # First accept the basic system types. + # The portable systems comes first. + # Each alternative MUST END IN A *, to match a version number. + # -sysv* is not here because it comes later, after sysvr4. + -gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \ + | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\ + | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \ + | -sym* | -kopensolaris* | -plan9* \ + | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \ + | -aos* | -aros* \ + | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \ + | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \ + | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \ + | -bitrig* | -openbsd* | -solidbsd* \ + | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \ + | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \ + | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \ + | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \ + | -chorusos* | -chorusrdb* | -cegcc* \ + | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \ + | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \ + | -linux-newlib* | -linux-musl* | -linux-uclibc* \ + | -uxpv* | -beos* | -mpeix* | -udk* | -moxiebox* \ + | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \ + | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \ + | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \ + | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \ + | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \ + | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \ + | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* | -tirtos*) + # Remember, each alternative MUST END IN *, to match a version number. + ;; + -qnx*) + case $basic_machine in + x86-* | i*86-*) + ;; + *) + os=-nto$os + ;; + esac + ;; + -nto-qnx*) + ;; + -nto*) + os=`echo $os | sed -e 's|nto|nto-qnx|'` + ;; + -sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \ + | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \ + | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*) + ;; + -mac*) + os=`echo $os | sed -e 's|mac|macos|'` + ;; + -linux-dietlibc) + os=-linux-dietlibc + ;; + -linux*) + os=`echo $os | sed -e 's|linux|linux-gnu|'` + ;; + -sunos5*) + os=`echo $os | sed -e 's|sunos5|solaris2|'` + ;; + -sunos6*) + os=`echo $os | sed -e 's|sunos6|solaris3|'` + ;; + -opened*) + os=-openedition + ;; + -os400*) + os=-os400 + ;; + -wince*) + os=-wince + ;; + -osfrose*) + os=-osfrose + ;; + -osf*) + os=-osf + ;; + -utek*) + os=-bsd + ;; + -dynix*) + os=-bsd + ;; + -acis*) + os=-aos + ;; + -atheos*) + os=-atheos + ;; + -syllable*) + os=-syllable + ;; + -386bsd) + os=-bsd + ;; + -ctix* | -uts*) + os=-sysv + ;; + -nova*) + os=-rtmk-nova + ;; + -ns2 ) + os=-nextstep2 + ;; + -nsk*) + os=-nsk + ;; + # Preserve the version number of sinix5. + -sinix5.*) + os=`echo $os | sed -e 's|sinix|sysv|'` + ;; + -sinix*) + os=-sysv4 + ;; + -tpf*) + os=-tpf + ;; + -triton*) + os=-sysv3 + ;; + -oss*) + os=-sysv3 + ;; + -svr4) + os=-sysv4 + ;; + -svr3) + os=-sysv3 + ;; + -sysvr4) + os=-sysv4 + ;; + # This must come after -sysvr4. + -sysv*) + ;; + -ose*) + os=-ose + ;; + -es1800*) + os=-ose + ;; + -xenix) + os=-xenix + ;; + -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*) + os=-mint + ;; + -aros*) + os=-aros + ;; + -zvmoe) + os=-zvmoe + ;; + -dicos*) + os=-dicos + ;; + -nacl*) + ;; + -none) + ;; + *) + # Get rid of the `-' at the beginning of $os. + os=`echo $os | sed 's/[^-]*-//'` + echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2 + exit 1 + ;; +esac +else + +# Here we handle the default operating systems that come with various machines. +# The value should be what the vendor currently ships out the door with their +# machine or put another way, the most popular os provided with the machine. + +# Note that if you're going to try to match "-MANUFACTURER" here (say, +# "-sun"), then you have to tell the case statement up towards the top +# that MANUFACTURER isn't an operating system. Otherwise, code above +# will signal an error saying that MANUFACTURER isn't an operating +# system, and we'll never get to this point. + +case $basic_machine in + score-*) + os=-elf + ;; + spu-*) + os=-elf + ;; + *-acorn) + os=-riscix1.2 + ;; + arm*-rebel) + os=-linux + ;; + arm*-semi) + os=-aout + ;; + c4x-* | tic4x-*) + os=-coff + ;; + c8051-*) + os=-elf + ;; + hexagon-*) + os=-elf + ;; + tic54x-*) + os=-coff + ;; + tic55x-*) + os=-coff + ;; + tic6x-*) + os=-coff + ;; + # This must come before the *-dec entry. + pdp10-*) + os=-tops20 + ;; + pdp11-*) + os=-none + ;; + *-dec | vax-*) + os=-ultrix4.2 + ;; + m68*-apollo) + os=-domain + ;; + i386-sun) + os=-sunos4.0.2 + ;; + m68000-sun) + os=-sunos3 + ;; + m68*-cisco) + os=-aout + ;; + mep-*) + os=-elf + ;; + mips*-cisco) + os=-elf + ;; + mips*-*) + os=-elf + ;; + or32-*) + os=-coff + ;; + *-tti) # must be before sparc entry or we get the wrong os. + os=-sysv3 + ;; + sparc-* | *-sun) + os=-sunos4.1.1 + ;; + *-be) + os=-beos + ;; + *-haiku) + os=-haiku + ;; + *-ibm) + os=-aix + ;; + *-knuth) + os=-mmixware + ;; + *-wec) + os=-proelf + ;; + *-winbond) + os=-proelf + ;; + *-oki) + os=-proelf + ;; + *-hp) + os=-hpux + ;; + *-hitachi) + os=-hiux + ;; + i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent) + os=-sysv + ;; + *-cbm) + os=-amigaos + ;; + *-dg) + os=-dgux + ;; + *-dolphin) + os=-sysv3 + ;; + m68k-ccur) + os=-rtu + ;; + m88k-omron*) + os=-luna + ;; + *-next ) + os=-nextstep + ;; + *-sequent) + os=-ptx + ;; + *-crds) + os=-unos + ;; + *-ns) + os=-genix + ;; + i370-*) + os=-mvs + ;; + *-next) + os=-nextstep3 + ;; + *-gould) + os=-sysv + ;; + *-highlevel) + os=-bsd + ;; + *-encore) + os=-bsd + ;; + *-sgi) + os=-irix + ;; + *-siemens) + os=-sysv4 + ;; + *-masscomp) + os=-rtu + ;; + f30[01]-fujitsu | f700-fujitsu) + os=-uxpv + ;; + *-rom68k) + os=-coff + ;; + *-*bug) + os=-coff + ;; + *-apple) + os=-macos + ;; + *-atari*) + os=-mint + ;; + *) + os=-none + ;; +esac +fi + +# Here we handle the case where we know the os, and the CPU type, but not the +# manufacturer. We pick the logical manufacturer. +vendor=unknown +case $basic_machine in + *-unknown) + case $os in + -riscix*) + vendor=acorn + ;; + -sunos*) + vendor=sun + ;; + -cnk*|-aix*) + vendor=ibm + ;; + -beos*) + vendor=be + ;; + -hpux*) + vendor=hp + ;; + -mpeix*) + vendor=hp + ;; + -hiux*) + vendor=hitachi + ;; + -unos*) + vendor=crds + ;; + -dgux*) + vendor=dg + ;; + -luna*) + vendor=omron + ;; + -genix*) + vendor=ns + ;; + -mvs* | -opened*) + vendor=ibm + ;; + -os400*) + vendor=ibm + ;; + -ptx*) + vendor=sequent + ;; + -tpf*) + vendor=ibm + ;; + -vxsim* | -vxworks* | -windiss*) + vendor=wrs + ;; + -aux*) + vendor=apple + ;; + -hms*) + vendor=hitachi + ;; + -mpw* | -macos*) + vendor=apple + ;; + -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*) + vendor=atari + ;; + -vos*) + vendor=stratus + ;; + esac + basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"` + ;; +esac + +echo $basic_machine$os +exit + +# Local variables: +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "timestamp='" +# time-stamp-format: "%:y-%02m-%02d" +# time-stamp-end: "'" +# End: diff --git a/configure b/configure new file mode 100755 index 0000000..ba77ec6 --- /dev/null +++ b/configure @@ -0,0 +1,20723 @@ +#! /bin/sh +# Guess values for system-dependent variables and create Makefiles. +# Generated by GNU Autoconf 2.69 for gc 7.6.4. +# +# Report bugs to . +# +# +# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. +# +# +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent editors from complaining about space-tab. +# (If _AS_PATH_WALK were called with IFS unset, it would disable word +# splitting by setting IFS to empty value.) +IFS=" "" $as_nl" + +# Find who we are. Look in the path if we contain no directory separator. +as_myself= +case $0 in #(( + *[\\/]* ) as_myself=$0 ;; + *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break + done +IFS=$as_save_IFS + + ;; +esac +# We did not find ourselves, most probably we were run as `sh COMMAND' +# in which case we are not to be found in the path. +if test "x$as_myself" = x; then + as_myself=$0 +fi +if test ! -f "$as_myself"; then + $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + +# Unset variables that we do not need and which cause bugs (e.g. in +# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1" +# suppresses any "Segmentation fault" message there. '((' could +# trigger a bug in pdksh 5.2.14. +for as_var in BASH_ENV ENV MAIL MAILPATH +do eval test x\${$as_var+set} = xset \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +# Use a proper internal environment variable to ensure we don't fall + # into an infinite loop, continuously re-executing ourselves. + if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then + _as_can_reexec=no; export _as_can_reexec; + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +as_fn_exit 255 + fi + # We don't want this to propagate to other subprocesses. + { _as_can_reexec=; unset _as_can_reexec;} +if test "x$CONFIG_SHELL" = x; then + as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which + # is contrary to our usage. Disable this feature. + alias -g '\${1+\"\$@\"}'='\"\$@\"' + setopt NO_GLOB_SUBST +else + case \`(set -o) 2>/dev/null\` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi +" + as_required="as_fn_return () { (exit \$1); } +as_fn_success () { as_fn_return 0; } +as_fn_failure () { as_fn_return 1; } +as_fn_ret_success () { return 0; } +as_fn_ret_failure () { return 1; } + +exitcode=0 +as_fn_success || { exitcode=1; echo as_fn_success failed.; } +as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; } +as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; } +as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; } +if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then : + +else + exitcode=1; echo positional parameters were not saved. +fi +test x\$exitcode = x0 || exit 1 +test -x / || exit 1" + as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO + as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO + eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" && + test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1 + + test -n \"\${ZSH_VERSION+set}\${BASH_VERSION+set}\" || ( + ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' + ECHO=\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO + ECHO=\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO + PATH=/empty FPATH=/empty; export PATH FPATH + test \"X\`printf %s \$ECHO\`\" = \"X\$ECHO\" \\ + || test \"X\`print -r -- \$ECHO\`\" = \"X\$ECHO\" ) || exit 1 +test \$(( 1 + 1 )) = 2 || exit 1" + if (eval "$as_required") 2>/dev/null; then : + as_have_required=yes +else + as_have_required=no +fi + if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then : + +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +as_found=false +for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + as_found=: + case $as_dir in #( + /*) + for as_base in sh bash ksh sh5; do + # Try only shells that exist, to save several forks. + as_shell=$as_dir/$as_base + if { test -f "$as_shell" || test -f "$as_shell.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then : + CONFIG_SHELL=$as_shell as_have_required=yes + if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then : + break 2 +fi +fi + done;; + esac + as_found=false +done +$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then : + CONFIG_SHELL=$SHELL as_have_required=yes +fi; } +IFS=$as_save_IFS + + + if test "x$CONFIG_SHELL" != x; then : + export CONFIG_SHELL + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +exit 255 +fi + + if test x$as_have_required = xno; then : + $as_echo "$0: This script requires a shell more modern than all" + $as_echo "$0: the shells that I found on your system." + if test x${ZSH_VERSION+set} = xset ; then + $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should" + $as_echo "$0: be upgraded to zsh 4.3.4 or later." + else + $as_echo "$0: Please tell bug-autoconf@gnu.org and +$0: https://github.com/ivmai/bdwgc/issues about your +$0: system, including any error possibly output before this +$0: message. Then install a modern shell, or manually run +$0: the script under such a shell if you do have one." + fi + exit 1 +fi +fi +fi +SHELL=${CONFIG_SHELL-/bin/sh} +export SHELL +# Unset more variables known to interfere with behavior of common tools. +CLICOLOR_FORCE= GREP_OPTIONS= +unset CLICOLOR_FORCE GREP_OPTIONS + +## --------------------- ## +## M4sh Shell Functions. ## +## --------------------- ## +# as_fn_unset VAR +# --------------- +# Portably unset VAR. +as_fn_unset () +{ + { eval $1=; unset $1;} +} +as_unset=as_fn_unset + +# as_fn_set_status STATUS +# ----------------------- +# Set $? to STATUS, without forking. +as_fn_set_status () +{ + return $1 +} # as_fn_set_status + +# as_fn_exit STATUS +# ----------------- +# Exit the shell with STATUS, even in a "trap 0" or "set -e" context. +as_fn_exit () +{ + set +e + as_fn_set_status $1 + exit $1 +} # as_fn_exit + +# as_fn_mkdir_p +# ------------- +# Create "$as_dir" as a directory, including parents if necessary. +as_fn_mkdir_p () +{ + + case $as_dir in #( + -*) as_dir=./$as_dir;; + esac + test -d "$as_dir" || eval $as_mkdir_p || { + as_dirs= + while :; do + case $as_dir in #( + *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'( + *) as_qdir=$as_dir;; + esac + as_dirs="'$as_qdir' $as_dirs" + as_dir=`$as_dirname -- "$as_dir" || +$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$as_dir" : 'X\(//\)[^/]' \| \ + X"$as_dir" : 'X\(//\)$' \| \ + X"$as_dir" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$as_dir" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + test -d "$as_dir" && break + done + test -z "$as_dirs" || eval "mkdir $as_dirs" + } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir" + + +} # as_fn_mkdir_p + +# as_fn_executable_p FILE +# ----------------------- +# Test if FILE is an executable regular file. +as_fn_executable_p () +{ + test -f "$1" && test -x "$1" +} # as_fn_executable_p +# as_fn_append VAR VALUE +# ---------------------- +# Append the text in VALUE to the end of the definition contained in VAR. Take +# advantage of any shell optimizations that allow amortized linear growth over +# repeated appends, instead of the typical quadratic growth present in naive +# implementations. +if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then : + eval 'as_fn_append () + { + eval $1+=\$2 + }' +else + as_fn_append () + { + eval $1=\$$1\$2 + } +fi # as_fn_append + +# as_fn_arith ARG... +# ------------------ +# Perform arithmetic evaluation on the ARGs, and store the result in the +# global $as_val. Take advantage of shells that can avoid forks. The arguments +# must be portable across $(()) and expr. +if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then : + eval 'as_fn_arith () + { + as_val=$(( $* )) + }' +else + as_fn_arith () + { + as_val=`expr "$@" || test $? -eq 1` + } +fi # as_fn_arith + + +# as_fn_error STATUS ERROR [LINENO LOG_FD] +# ---------------------------------------- +# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are +# provided, also output the error to LOG_FD, referencing LINENO. Then exit the +# script with STATUS, using 1 if that was 0. +as_fn_error () +{ + as_status=$1; test $as_status -eq 0 && as_status=1 + if test "$4"; then + as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4 + fi + $as_echo "$as_me: error: $2" >&2 + as_fn_exit $as_status +} # as_fn_error + +if expr a : '\(a\)' >/dev/null 2>&1 && + test "X`expr 00001 : '.*\(...\)'`" = X001; then + as_expr=expr +else + as_expr=false +fi + +if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then + as_basename=basename +else + as_basename=false +fi + +if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then + as_dirname=dirname +else + as_dirname=false +fi + +as_me=`$as_basename -- "$0" || +$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \ + X"$0" : 'X\(//\)$' \| \ + X"$0" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X/"$0" | + sed '/^.*\/\([^/][^/]*\)\/*$/{ + s//\1/ + q + } + /^X\/\(\/\/\)$/{ + s//\1/ + q + } + /^X\/\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + +# Avoid depending upon Character Ranges. +as_cr_letters='abcdefghijklmnopqrstuvwxyz' +as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ' +as_cr_Letters=$as_cr_letters$as_cr_LETTERS +as_cr_digits='0123456789' +as_cr_alnum=$as_cr_Letters$as_cr_digits + + + as_lineno_1=$LINENO as_lineno_1a=$LINENO + as_lineno_2=$LINENO as_lineno_2a=$LINENO + eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" && + test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || { + # Blame Lee E. McMahon (1931-1989) for sed's syntax. :-) + sed -n ' + p + /[$]LINENO/= + ' <$as_myself | + sed ' + s/[$]LINENO.*/&-/ + t lineno + b + :lineno + N + :loop + s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/ + t loop + s/-\n.*// + ' >$as_me.lineno && + chmod +x "$as_me.lineno" || + { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; } + + # If we had to re-execute with $CONFIG_SHELL, we're ensured to have + # already done that, so ensure we don't try to do so again and fall + # in an infinite loop. This has already happened in practice. + _as_can_reexec=no; export _as_can_reexec + # Don't try to exec as it changes $[0], causing all sort of problems + # (the dirname of $[0] is not the place where we might find the + # original and so on. Autoconf is especially sensitive to this). + . "./$as_me.lineno" + # Exit status is that of the last command. + exit +} + +ECHO_C= ECHO_N= ECHO_T= +case `echo -n x` in #((((( +-n*) + case `echo 'xy\c'` in + *c*) ECHO_T=' ';; # ECHO_T is single tab character. + xy) ECHO_C='\c';; + *) echo `echo ksh88 bug on AIX 6.1` > /dev/null + ECHO_T=' ';; + esac;; +*) + ECHO_N='-n';; +esac + +rm -f conf$$ conf$$.exe conf$$.file +if test -d conf$$.dir; then + rm -f conf$$.dir/conf$$.file +else + rm -f conf$$.dir + mkdir conf$$.dir 2>/dev/null +fi +if (echo >conf$$.file) 2>/dev/null; then + if ln -s conf$$.file conf$$ 2>/dev/null; then + as_ln_s='ln -s' + # ... but there are two gotchas: + # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail. + # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable. + # In both cases, we have to default to `cp -pR'. + ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe || + as_ln_s='cp -pR' + elif ln conf$$.file conf$$ 2>/dev/null; then + as_ln_s=ln + else + as_ln_s='cp -pR' + 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instead of parens because sh, perl, etc. also accept them. +# (The list follows the same order as the GNU Coding Standards.) +bindir='${exec_prefix}/bin' +sbindir='${exec_prefix}/sbin' +libexecdir='${exec_prefix}/libexec' +datarootdir='${prefix}/share' +datadir='${datarootdir}' +sysconfdir='${prefix}/etc' +sharedstatedir='${prefix}/com' +localstatedir='${prefix}/var' +includedir='${prefix}/include' +oldincludedir='/usr/include' +docdir='${datarootdir}/doc/${PACKAGE_TARNAME}' +infodir='${datarootdir}/info' +htmldir='${docdir}' +dvidir='${docdir}' +pdfdir='${docdir}' +psdir='${docdir}' +libdir='${exec_prefix}/lib' +localedir='${datarootdir}/locale' +mandir='${datarootdir}/man' + +ac_prev= +ac_dashdash= +for ac_option +do + # If the previous option needs an argument, assign it. + if test -n "$ac_prev"; then + eval $ac_prev=\$ac_option + ac_prev= + continue + fi + + case $ac_option in + *=?*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;; + *=) ac_optarg= ;; + *) ac_optarg=yes ;; + 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[VAR=VALUE]... + +To assign environment variables (e.g., CC, CFLAGS...), specify them as +VAR=VALUE. See below for descriptions of some of the useful variables. + +Defaults for the options are specified in brackets. + +Configuration: + -h, --help display this help and exit + --help=short display options specific to this package + --help=recursive display the short help of all the included packages + -V, --version display version information and exit + -q, --quiet, --silent do not print \`checking ...' messages + --cache-file=FILE cache test results in FILE [disabled] + -C, --config-cache alias for \`--cache-file=config.cache' + -n, --no-create do not create output files + --srcdir=DIR find the sources in DIR [configure dir or \`..'] + +Installation directories: + --prefix=PREFIX install architecture-independent files in PREFIX + [$ac_default_prefix] + --exec-prefix=EPREFIX install architecture-dependent files in EPREFIX + [PREFIX] + +By default, \`make install' will install all the files in +\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc. You can specify +an installation prefix other than \`$ac_default_prefix' using \`--prefix', +for instance \`--prefix=\$HOME'. + +For better control, use the options below. + +Fine tuning of the installation directories: + --bindir=DIR user executables [EPREFIX/bin] + --sbindir=DIR system admin executables [EPREFIX/sbin] + --libexecdir=DIR program executables [EPREFIX/libexec] + --sysconfdir=DIR read-only single-machine data [PREFIX/etc] + --sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com] + --localstatedir=DIR modifiable single-machine data [PREFIX/var] + --libdir=DIR object code libraries [EPREFIX/lib] + --includedir=DIR C header files [PREFIX/include] + --oldincludedir=DIR C header files for non-gcc [/usr/include] + --datarootdir=DIR read-only arch.-independent data root [PREFIX/share] + --datadir=DIR read-only architecture-independent data [DATAROOTDIR] + --infodir=DIR info documentation [DATAROOTDIR/info] + --localedir=DIR locale-dependent data [DATAROOTDIR/locale] + --mandir=DIR man documentation [DATAROOTDIR/man] + --docdir=DIR documentation root [DATAROOTDIR/doc/gc] + --htmldir=DIR html documentation [DOCDIR] + --dvidir=DIR dvi documentation [DOCDIR] + --pdfdir=DIR pdf documentation [DOCDIR] + --psdir=DIR ps documentation [DOCDIR] +_ACEOF + + cat <<\_ACEOF + +Program names: + --program-prefix=PREFIX prepend PREFIX to installed program names + --program-suffix=SUFFIX append SUFFIX to installed program names + --program-transform-name=PROGRAM run sed PROGRAM on installed program names + +System types: + --build=BUILD configure for building on BUILD [guessed] + --host=HOST cross-compile to build programs to run on HOST [BUILD] + --target=TARGET configure for building compilers for TARGET [HOST] +_ACEOF +fi + +if test -n "$ac_init_help"; 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It has an incompatible calling convention. + : + elif test $ac_prog = install && + grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then + # program-specific install script used by HP pwplus--don't use. + : + else + rm -rf conftest.one conftest.two conftest.dir + echo one > conftest.one + echo two > conftest.two + mkdir conftest.dir + if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" && + test -s conftest.one && test -s conftest.two && + test -s conftest.dir/conftest.one && + test -s conftest.dir/conftest.two + then + ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c" + break 3 + fi + fi + fi + done + done + ;; +esac + + done +IFS=$as_save_IFS + +rm -rf conftest.one conftest.two conftest.dir + +fi + if test "${ac_cv_path_install+set}" = set; then + INSTALL=$ac_cv_path_install + else + # As a last resort, use the slow shell script. Don't cache a + # value for INSTALL within a source directory, because that will + # break other packages using the cache if that directory is + # removed, or if the value is a relative name. + INSTALL=$ac_install_sh + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5 +$as_echo "$INSTALL" >&6; } + +# Use test -z because SunOS4 sh mishandles braces in ${var-val}. +# It thinks the first close brace ends the variable substitution. +test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' + +test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}' + +test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether build environment is sane" >&5 +$as_echo_n "checking whether build environment is sane... " >&6; } +# Reject unsafe characters in $srcdir or the absolute working directory +# name. Accept space and tab only in the latter. +am_lf=' +' +case `pwd` in + *[\\\"\#\$\&\'\`$am_lf]*) + as_fn_error $? "unsafe absolute working directory name" "$LINENO" 5;; +esac +case $srcdir in + *[\\\"\#\$\&\'\`$am_lf\ \ ]*) + as_fn_error $? "unsafe srcdir value: '$srcdir'" "$LINENO" 5;; +esac + +# Do 'set' in a subshell so we don't clobber the current shell's +# arguments. Must try -L first in case configure is actually a +# symlink; some systems play weird games with the mod time of symlinks +# (eg FreeBSD returns the mod time of the symlink's containing +# directory). +if ( + am_has_slept=no + for am_try in 1 2; do + echo "timestamp, slept: $am_has_slept" > conftest.file + set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null` + if test "$*" = "X"; then + # -L didn't work. + set X `ls -t "$srcdir/configure" conftest.file` + fi + if test "$*" != "X $srcdir/configure conftest.file" \ + && test "$*" != "X conftest.file $srcdir/configure"; then + + # If neither matched, then we have a broken ls. This can happen + # if, for instance, CONFIG_SHELL is bash and it inherits a + # broken ls alias from the environment. This has actually + # happened. Such a system could not be considered "sane". + as_fn_error $? "ls -t appears to fail. Make sure there is not a broken + alias in your environment" "$LINENO" 5 + fi + if test "$2" = conftest.file || test $am_try -eq 2; then + break + fi + # Just in case. + sleep 1 + am_has_slept=yes + done + test "$2" = conftest.file + ) +then + # Ok. + : +else + as_fn_error $? "newly created file is older than distributed files! +Check your system clock" "$LINENO" 5 +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +# If we didn't sleep, we still need to ensure time stamps of config.status and +# generated files are strictly newer. +am_sleep_pid= +if grep 'slept: no' conftest.file >/dev/null 2>&1; then + ( sleep 1 ) & + am_sleep_pid=$! +fi + +rm -f conftest.file + +test "$program_prefix" != NONE && + program_transform_name="s&^&$program_prefix&;$program_transform_name" +# Use a double $ so make ignores it. +test "$program_suffix" != NONE && + program_transform_name="s&\$&$program_suffix&;$program_transform_name" +# Double any \ or $. +# By default was `s,x,x', remove it if useless. +ac_script='s/[\\$]/&&/g;s/;s,x,x,$//' +program_transform_name=`$as_echo "$program_transform_name" | sed "$ac_script"` + +# Expand $ac_aux_dir to an absolute path. +am_aux_dir=`cd "$ac_aux_dir" && pwd` + +if test x"${MISSING+set}" != xset; then + case $am_aux_dir in + *\ * | *\ *) + MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;; + *) + MISSING="\${SHELL} $am_aux_dir/missing" ;; + esac +fi +# Use eval to expand $SHELL +if eval "$MISSING --is-lightweight"; then + am_missing_run="$MISSING " +else + am_missing_run= + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: 'missing' script is too old or missing" >&5 +$as_echo "$as_me: WARNING: 'missing' script is too old or missing" >&2;} +fi + +if test x"${install_sh+set}" != xset; then + case $am_aux_dir in + *\ * | *\ *) + install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;; + *) + install_sh="\${SHELL} $am_aux_dir/install-sh" + esac +fi + +# Installed binaries are usually stripped using 'strip' when the user +# run "make install-strip". However 'strip' might not be the right +# tool to use in cross-compilation environments, therefore Automake +# will honor the 'STRIP' environment variable to overrule this program. +if test "$cross_compiling" != no; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args. +set dummy ${ac_tool_prefix}strip; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_STRIP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$STRIP"; then + ac_cv_prog_STRIP="$STRIP" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_STRIP="${ac_tool_prefix}strip" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +STRIP=$ac_cv_prog_STRIP +if test -n "$STRIP"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5 +$as_echo "$STRIP" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_STRIP"; then + ac_ct_STRIP=$STRIP + # Extract the first word of "strip", so it can be a program name with args. +set dummy strip; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_STRIP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_STRIP"; then + ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_STRIP="strip" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP +if test -n "$ac_ct_STRIP"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5 +$as_echo "$ac_ct_STRIP" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_STRIP" = x; then + STRIP=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + STRIP=$ac_ct_STRIP + fi +else + STRIP="$ac_cv_prog_STRIP" +fi + +fi +INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s" + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5 +$as_echo_n "checking for a thread-safe mkdir -p... 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Don't cache a + # value for MKDIR_P within a source directory, because that will + # break other packages using the cache if that directory is + # removed, or if the value is a relative name. + MKDIR_P="$ac_install_sh -d" + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5 +$as_echo "$MKDIR_P" >&6; } + +for ac_prog in gawk mawk nawk awk +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... 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" >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_CC"; then + ac_ct_CC=$CC + # Extract the first word of "gcc", so it can be a program name with args. +set dummy gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +else + CC="$ac_cv_prog_CC" +fi + +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args. +set dummy ${ac_tool_prefix}cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + fi +fi +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + ac_prog_rejected=no +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +if test $ac_prog_rejected = yes; then + # We found a bogon in the path, so make sure we never use it. + set dummy $ac_cv_prog_CC + shift + if test $# != 0; then + # We chose a different compiler from the bogus one. + # However, it has the same basename, so the bogon will be chosen + # first if we set CC to just the basename; use the full file name. + shift + ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@" + fi +fi +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + for ac_prog in cl.exe + do + # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. +set dummy $ac_tool_prefix$ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="$ac_tool_prefix$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$CC" && break + done +fi +if test -z "$CC"; then + ac_ct_CC=$CC + for ac_prog in cl.exe +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$ac_ct_CC" && break +done + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +fi + +fi + + +test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "no acceptable C compiler found in \$PATH +See \`config.log' for more details" "$LINENO" 5; } + +# Provide some information about the compiler. +$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5 +set X $ac_compile +ac_compiler=$2 +for ac_option in --version -v -V -qversion; do + { { ac_try="$ac_compiler $ac_option >&5" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_compiler $ac_option >&5") 2>conftest.err + ac_status=$? + if test -s conftest.err; then + sed '10a\ +... rest of stderr output deleted ... + 10q' conftest.err >conftest.er1 + cat conftest.er1 >&5 + fi + rm -f conftest.er1 conftest.err + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } +done + +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +ac_clean_files_save=$ac_clean_files +ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out" +# Try to create an executable without -o first, disregard a.out. +# It will help us diagnose broken compilers, and finding out an intuition +# of exeext. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5 +$as_echo_n "checking whether the C compiler works... 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We should not override ac_cv_exeext if it was cached, +# so that the user can short-circuit this test for compilers unknown to +# Autoconf. +for ac_file in $ac_files '' +do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) + ;; + [ab].out ) + # We found the default executable, but exeext='' is most + # certainly right. + break;; + *.* ) + if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no; + then :; else + ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + fi + # We set ac_cv_exeext here because the later test for it is not + # safe: cross compilers may not add the suffix if given an `-o' + # argument, so we may need to know it at that point already. + # Even if this section looks crufty: it has the advantage of + # actually working. + break;; + * ) + break;; + esac +done +test "$ac_cv_exeext" = no && ac_cv_exeext= + +else + ac_file='' +fi +if test -z "$ac_file"; then : + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +$as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error 77 "C compiler cannot create executables +See \`config.log' for more details" "$LINENO" 5; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5 +$as_echo_n "checking for C compiler default output file name... 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For instance with Cygwin, `ls conftest' will +# work properly (i.e., refer to `conftest.exe'), while it won't with +# `rm'. +for ac_file in conftest.exe conftest conftest.*; do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;; + *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + break;; + * ) break;; + esac +done +else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? 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It's necessary to write '\x00'==0 to get something + that's true only with -std. */ +int osf4_cc_array ['\x00' == 0 ? 1 : -1]; + +/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters + inside strings and character constants. */ +#define FOO(x) 'x' +int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1]; + +int test (int i, double x); +struct s1 {int (*f) (int a);}; +struct s2 {int (*f) (double a);}; +int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int); +int argc; +char **argv; +int +main () +{ +return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]; + ; + return 0; +} +_ACEOF +for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \ + -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__" +do + CC="$ac_save_CC $ac_arg" + if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_prog_cc_c89=$ac_arg +fi +rm -f core conftest.err conftest.$ac_objext + test "x$ac_cv_prog_cc_c89" != "xno" && break +done +rm -f conftest.$ac_ext +CC=$ac_save_CC + +fi +# AC_CACHE_VAL +case "x$ac_cv_prog_cc_c89" in + x) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5 +$as_echo "none needed" >&6; } ;; + xno) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5 +$as_echo "unsupported" >&6; } ;; + *) + CC="$CC $ac_cv_prog_cc_c89" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5 +$as_echo "$ac_cv_prog_cc_c89" >&6; } ;; +esac +if test "x$ac_cv_prog_cc_c89" != xno; then : + +fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC understands -c and -o together" >&5 +$as_echo_n "checking whether $CC understands -c and -o together... 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" >&6; } +if ${ac_cv_path_EGREP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if echo a | $GREP -E '(a|b)' >/dev/null 2>&1 + then ac_cv_path_EGREP="$GREP -E" + else + if test -z "$EGREP"; then + ac_path_EGREP_found=false + # Loop through the user's path and test for each of PROGNAME-LIST + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in egrep; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext" + as_fn_executable_p "$ac_path_EGREP" || continue +# Check for GNU ac_path_EGREP and select it if it is found. + # Check for GNU $ac_path_EGREP +case `"$ac_path_EGREP" --version 2>&1` in +*GNU*) + ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;; +*) + ac_count=0 + $as_echo_n 0123456789 >"conftest.in" + while : + do + cat "conftest.in" "conftest.in" >"conftest.tmp" + mv "conftest.tmp" "conftest.in" + cp "conftest.in" "conftest.nl" + $as_echo 'EGREP' >> "conftest.nl" + "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break + diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break + as_fn_arith $ac_count + 1 && ac_count=$as_val + if test $ac_count -gt ${ac_path_EGREP_max-0}; then + # Best one so far, save it but keep looking for a better one + ac_cv_path_EGREP="$ac_path_EGREP" + ac_path_EGREP_max=$ac_count + fi + # 10*(2^10) chars as input seems more than enough + test $ac_count -gt 10 && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out;; +esac + + $ac_path_EGREP_found && break 3 + done + done + done +IFS=$as_save_IFS + if test -z "$ac_cv_path_EGREP"; then + as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 + fi +else + ac_cv_path_EGREP=$EGREP +fi + + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5 +$as_echo "$ac_cv_path_EGREP" >&6; } + EGREP="$ac_cv_path_EGREP" + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fgrep" >&5 +$as_echo_n "checking for fgrep... " >&6; } +if ${ac_cv_path_FGREP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if echo 'ab*c' | $GREP -F 'ab*c' >/dev/null 2>&1 + then ac_cv_path_FGREP="$GREP -F" + else + if test -z "$FGREP"; then + ac_path_FGREP_found=false + # Loop through the user's path and test for each of PROGNAME-LIST + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in fgrep; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_FGREP="$as_dir/$ac_prog$ac_exec_ext" + as_fn_executable_p "$ac_path_FGREP" || continue +# Check for GNU ac_path_FGREP and select it if it is found. + # Check for GNU $ac_path_FGREP +case `"$ac_path_FGREP" --version 2>&1` in +*GNU*) + ac_cv_path_FGREP="$ac_path_FGREP" ac_path_FGREP_found=:;; +*) + ac_count=0 + $as_echo_n 0123456789 >"conftest.in" + while : + do + cat "conftest.in" "conftest.in" >"conftest.tmp" + mv "conftest.tmp" "conftest.in" + cp "conftest.in" "conftest.nl" + $as_echo 'FGREP' >> "conftest.nl" + "$ac_path_FGREP" FGREP < "conftest.nl" >"conftest.out" 2>/dev/null || break + diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break + as_fn_arith $ac_count + 1 && ac_count=$as_val + if test $ac_count -gt ${ac_path_FGREP_max-0}; then + # Best one so far, save it but keep looking for a better one + ac_cv_path_FGREP="$ac_path_FGREP" + ac_path_FGREP_max=$ac_count + fi + # 10*(2^10) chars as input seems more than enough + test $ac_count -gt 10 && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out;; +esac + + $ac_path_FGREP_found && break 3 + done + done + done +IFS=$as_save_IFS + if test -z "$ac_cv_path_FGREP"; then + as_fn_error $? "no acceptable fgrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 + fi +else + ac_cv_path_FGREP=$FGREP +fi + + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_FGREP" >&5 +$as_echo "$ac_cv_path_FGREP" >&6; } + FGREP="$ac_cv_path_FGREP" + + +test -z "$GREP" && GREP=grep + + + + + + + + + + + + + + + + + + + +# Check whether --with-gnu-ld was given. +if test "${with_gnu_ld+set}" = set; then : + withval=$with_gnu_ld; test no = "$withval" || with_gnu_ld=yes +else + with_gnu_ld=no +fi + +ac_prog=ld +if test yes = "$GCC"; then + # Check if gcc -print-prog-name=ld gives a path. + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld used by $CC" >&5 +$as_echo_n "checking for ld used by $CC... " >&6; } + case $host in + *-*-mingw*) + # gcc leaves a trailing carriage return, which upsets mingw + ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; + *) + ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; + esac + case $ac_prog in + # Accept absolute paths. + [\\/]* | ?:[\\/]*) + re_direlt='/[^/][^/]*/\.\./' + # Canonicalize the pathname of ld + ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'` + while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do + ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"` + done + test -z "$LD" && LD=$ac_prog + ;; + "") + # If it fails, then pretend we aren't using GCC. + ac_prog=ld + ;; + *) + # If it is relative, then search for the first ld in PATH. + with_gnu_ld=unknown + ;; + esac +elif test yes = "$with_gnu_ld"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5 +$as_echo_n "checking for GNU ld... " >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5 +$as_echo_n "checking for non-GNU ld... " >&6; } +fi +if ${lt_cv_path_LD+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -z "$LD"; then + lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR + for ac_dir in $PATH; do + IFS=$lt_save_ifs + test -z "$ac_dir" && ac_dir=. + if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then + lt_cv_path_LD=$ac_dir/$ac_prog + # Check to see if the program is GNU ld. I'd rather use --version, + # but apparently some variants of GNU ld only accept -v. + # Break only if it was the GNU/non-GNU ld that we prefer. + case `"$lt_cv_path_LD" -v 2>&1 &5 +$as_echo "$LD" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi +test -z "$LD" && as_fn_error $? "no acceptable ld found in \$PATH" "$LINENO" 5 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5 +$as_echo_n "checking if the linker ($LD) is GNU ld... " >&6; } +if ${lt_cv_prog_gnu_ld+:} false; then : + $as_echo_n "(cached) " >&6 +else + # I'd rather use --version here, but apparently some GNU lds only accept -v. +case `$LD -v 2>&1 &5 +$as_echo "$lt_cv_prog_gnu_ld" >&6; } +with_gnu_ld=$lt_cv_prog_gnu_ld + + + + + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for BSD- or MS-compatible name lister (nm)" >&5 +$as_echo_n "checking for BSD- or MS-compatible name lister (nm)... " >&6; } +if ${lt_cv_path_NM+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$NM"; then + # Let the user override the test. + lt_cv_path_NM=$NM +else + lt_nm_to_check=${ac_tool_prefix}nm + if test -n "$ac_tool_prefix" && test "$build" = "$host"; then + lt_nm_to_check="$lt_nm_to_check nm" + fi + for lt_tmp_nm in $lt_nm_to_check; do + lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR + for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do + IFS=$lt_save_ifs + test -z "$ac_dir" && ac_dir=. + tmp_nm=$ac_dir/$lt_tmp_nm + if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext"; then + # Check to see if the nm accepts a BSD-compat flag. + # Adding the 'sed 1q' prevents false positives on HP-UX, which says: + # nm: unknown option "B" ignored + # Tru64's nm complains that /dev/null is an invalid object file + # MSYS converts /dev/null to NUL, MinGW nm treats NUL as empty + case $build_os in + mingw*) lt_bad_file=conftest.nm/nofile ;; + *) lt_bad_file=/dev/null ;; + esac + case `"$tmp_nm" -B $lt_bad_file 2>&1 | sed '1q'` in + *$lt_bad_file* | *'Invalid file or object type'*) + lt_cv_path_NM="$tmp_nm -B" + break 2 + ;; + *) + case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in + */dev/null*) + lt_cv_path_NM="$tmp_nm -p" + break 2 + ;; + *) + lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but + continue # so that we can try to find one that supports BSD flags + ;; + esac + ;; + esac + fi + done + IFS=$lt_save_ifs + done + : ${lt_cv_path_NM=no} +fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_NM" >&5 +$as_echo "$lt_cv_path_NM" >&6; } +if test no != "$lt_cv_path_NM"; then + NM=$lt_cv_path_NM +else + # Didn't find any BSD compatible name lister, look for dumpbin. + if test -n "$DUMPBIN"; then : + # Let the user override the test. + else + if test -n "$ac_tool_prefix"; then + for ac_prog in dumpbin "link -dump" + do + # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. +set dummy $ac_tool_prefix$ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_DUMPBIN+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$DUMPBIN"; then + ac_cv_prog_DUMPBIN="$DUMPBIN" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_DUMPBIN="$ac_tool_prefix$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +DUMPBIN=$ac_cv_prog_DUMPBIN +if test -n "$DUMPBIN"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DUMPBIN" >&5 +$as_echo "$DUMPBIN" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$DUMPBIN" && break + done +fi +if test -z "$DUMPBIN"; then + ac_ct_DUMPBIN=$DUMPBIN + for ac_prog in dumpbin "link -dump" +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_DUMPBIN+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_DUMPBIN"; then + ac_cv_prog_ac_ct_DUMPBIN="$ac_ct_DUMPBIN" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_DUMPBIN="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_DUMPBIN=$ac_cv_prog_ac_ct_DUMPBIN +if test -n "$ac_ct_DUMPBIN"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DUMPBIN" >&5 +$as_echo "$ac_ct_DUMPBIN" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$ac_ct_DUMPBIN" && break +done + + if test "x$ac_ct_DUMPBIN" = x; then + DUMPBIN=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + DUMPBIN=$ac_ct_DUMPBIN + fi +fi + + case `$DUMPBIN -symbols -headers /dev/null 2>&1 | sed '1q'` in + *COFF*) + DUMPBIN="$DUMPBIN -symbols -headers" + ;; + *) + DUMPBIN=: + ;; + esac + fi + + if test : != "$DUMPBIN"; then + NM=$DUMPBIN + fi +fi +test -z "$NM" && NM=nm + + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5 +$as_echo_n "checking the name lister ($NM) interface... " >&6; } +if ${lt_cv_nm_interface+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_nm_interface="BSD nm" + echo "int some_variable = 0;" > conftest.$ac_ext + (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&5) + (eval "$ac_compile" 2>conftest.err) + cat conftest.err >&5 + (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&5) + (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out) + cat conftest.err >&5 + (eval echo "\"\$as_me:$LINENO: output\"" >&5) + cat conftest.out >&5 + if $GREP 'External.*some_variable' conftest.out > /dev/null; then + lt_cv_nm_interface="MS dumpbin" + fi + rm -f conftest* +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5 +$as_echo "$lt_cv_nm_interface" >&6; } + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5 +$as_echo_n "checking whether ln -s works... " >&6; } +LN_S=$as_ln_s +if test "$LN_S" = "ln -s"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, using $LN_S" >&5 +$as_echo "no, using $LN_S" >&6; } +fi + +# find the maximum length of command line arguments +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the maximum length of command line arguments" >&5 +$as_echo_n "checking the maximum length of command line arguments... " >&6; } +if ${lt_cv_sys_max_cmd_len+:} false; then : + $as_echo_n "(cached) " >&6 +else + i=0 + teststring=ABCD + + case $build_os in + msdosdjgpp*) + # On DJGPP, this test can blow up pretty badly due to problems in libc + # (any single argument exceeding 2000 bytes causes a buffer overrun + # during glob expansion). Even if it were fixed, the result of this + # check would be larger than it should be. + lt_cv_sys_max_cmd_len=12288; # 12K is about right + ;; + + gnu*) + # Under GNU Hurd, this test is not required because there is + # no limit to the length of command line arguments. + # Libtool will interpret -1 as no limit whatsoever + lt_cv_sys_max_cmd_len=-1; + ;; + + cygwin* | mingw* | cegcc*) + # On Win9x/ME, this test blows up -- it succeeds, but takes + # about 5 minutes as the teststring grows exponentially. + # Worse, since 9x/ME are not pre-emptively multitasking, + # you end up with a "frozen" computer, even though with patience + # the test eventually succeeds (with a max line length of 256k). + # Instead, let's just punt: use the minimum linelength reported by + # all of the supported platforms: 8192 (on NT/2K/XP). + lt_cv_sys_max_cmd_len=8192; + ;; + + mint*) + # On MiNT this can take a long time and run out of memory. + lt_cv_sys_max_cmd_len=8192; + ;; + + amigaos*) + # On AmigaOS with pdksh, this test takes hours, literally. + # So we just punt and use a minimum line length of 8192. + lt_cv_sys_max_cmd_len=8192; + ;; + + bitrig* | darwin* | dragonfly* | freebsd* | netbsd* | openbsd*) + # This has been around since 386BSD, at least. Likely further. + if test -x /sbin/sysctl; then + lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax` + elif test -x /usr/sbin/sysctl; then + lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax` + else + lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs + fi + # And add a safety zone + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` + ;; + + interix*) + # We know the value 262144 and hardcode it with a safety zone (like BSD) + lt_cv_sys_max_cmd_len=196608 + ;; + + os2*) + # The test takes a long time on OS/2. + lt_cv_sys_max_cmd_len=8192 + ;; + + osf*) + # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure + # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not + # nice to cause kernel panics so lets avoid the loop below. + # First set a reasonable default. + lt_cv_sys_max_cmd_len=16384 + # + if test -x /sbin/sysconfig; then + case `/sbin/sysconfig -q proc exec_disable_arg_limit` in + *1*) lt_cv_sys_max_cmd_len=-1 ;; + esac + fi + ;; + sco3.2v5*) + lt_cv_sys_max_cmd_len=102400 + ;; + sysv5* | sco5v6* | sysv4.2uw2*) + kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null` + if test -n "$kargmax"; then + lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[ ]//'` + else + lt_cv_sys_max_cmd_len=32768 + fi + ;; + *) + lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null` + if test -n "$lt_cv_sys_max_cmd_len" && \ + test undefined != "$lt_cv_sys_max_cmd_len"; then + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` + else + # Make teststring a little bigger before we do anything with it. + # a 1K string should be a reasonable start. + for i in 1 2 3 4 5 6 7 8; do + teststring=$teststring$teststring + done + SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}} + # If test is not a shell built-in, we'll probably end up computing a + # maximum length that is only half of the actual maximum length, but + # we can't tell. + while { test X`env echo "$teststring$teststring" 2>/dev/null` \ + = "X$teststring$teststring"; } >/dev/null 2>&1 && + test 17 != "$i" # 1/2 MB should be enough + do + i=`expr $i + 1` + teststring=$teststring$teststring + done + # Only check the string length outside the loop. + lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1` + teststring= + # Add a significant safety factor because C++ compilers can tack on + # massive amounts of additional arguments before passing them to the + # linker. It appears as though 1/2 is a usable value. + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2` + fi + ;; + esac + +fi + +if test -n "$lt_cv_sys_max_cmd_len"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sys_max_cmd_len" >&5 +$as_echo "$lt_cv_sys_max_cmd_len" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5 +$as_echo "none" >&6; } +fi +max_cmd_len=$lt_cv_sys_max_cmd_len + + + + + + +: ${CP="cp -f"} +: ${MV="mv -f"} +: ${RM="rm -f"} + +if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then + lt_unset=unset +else + lt_unset=false +fi + + + + + +# test EBCDIC or ASCII +case `echo X|tr X '\101'` in + A) # ASCII based system + # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr + lt_SP2NL='tr \040 \012' + lt_NL2SP='tr \015\012 \040\040' + ;; + *) # EBCDIC based system + lt_SP2NL='tr \100 \n' + lt_NL2SP='tr \r\n \100\100' + ;; +esac + + + + + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to $host format" >&5 +$as_echo_n "checking how to convert $build file names to $host format... " >&6; } +if ${lt_cv_to_host_file_cmd+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $host in + *-*-mingw* ) + case $build in + *-*-mingw* ) # actually msys + lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32 + ;; + *-*-cygwin* ) + lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32 + ;; + * ) # otherwise, assume *nix + lt_cv_to_host_file_cmd=func_convert_file_nix_to_w32 + ;; + esac + ;; + *-*-cygwin* ) + case $build in + *-*-mingw* ) # actually msys + lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin + ;; + *-*-cygwin* ) + lt_cv_to_host_file_cmd=func_convert_file_noop + ;; + * ) # otherwise, assume *nix + lt_cv_to_host_file_cmd=func_convert_file_nix_to_cygwin + ;; + esac + ;; + * ) # unhandled hosts (and "normal" native builds) + lt_cv_to_host_file_cmd=func_convert_file_noop + ;; +esac + +fi + +to_host_file_cmd=$lt_cv_to_host_file_cmd +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_host_file_cmd" >&5 +$as_echo "$lt_cv_to_host_file_cmd" >&6; } + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to toolchain format" >&5 +$as_echo_n "checking how to convert $build file names to toolchain format... " >&6; } +if ${lt_cv_to_tool_file_cmd+:} false; then : + $as_echo_n "(cached) " >&6 +else + #assume ordinary cross tools, or native build. +lt_cv_to_tool_file_cmd=func_convert_file_noop +case $host in + *-*-mingw* ) + case $build in + *-*-mingw* ) # actually msys + lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32 + ;; + esac + ;; +esac + +fi + +to_tool_file_cmd=$lt_cv_to_tool_file_cmd +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_tool_file_cmd" >&5 +$as_echo "$lt_cv_to_tool_file_cmd" >&6; } + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LD option to reload object files" >&5 +$as_echo_n "checking for $LD option to reload object files... " >&6; } +if ${lt_cv_ld_reload_flag+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_ld_reload_flag='-r' +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_reload_flag" >&5 +$as_echo "$lt_cv_ld_reload_flag" >&6; } +reload_flag=$lt_cv_ld_reload_flag +case $reload_flag in +"" | " "*) ;; +*) reload_flag=" $reload_flag" ;; +esac +reload_cmds='$LD$reload_flag -o $output$reload_objs' +case $host_os in + cygwin* | mingw* | pw32* | cegcc*) + if test yes != "$GCC"; then + reload_cmds=false + fi + ;; + darwin*) + if test yes = "$GCC"; then + reload_cmds='$LTCC $LTCFLAGS -nostdlib $wl-r -o $output$reload_objs' + else + reload_cmds='$LD$reload_flag -o $output$reload_objs' + fi + ;; +esac + + + + + + + + + +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args. +set dummy ${ac_tool_prefix}objdump; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_OBJDUMP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$OBJDUMP"; then + ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +OBJDUMP=$ac_cv_prog_OBJDUMP +if test -n "$OBJDUMP"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5 +$as_echo "$OBJDUMP" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_OBJDUMP"; then + ac_ct_OBJDUMP=$OBJDUMP + # Extract the first word of "objdump", so it can be a program name with args. +set dummy objdump; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_OBJDUMP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_OBJDUMP"; then + ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_OBJDUMP="objdump" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP +if test -n "$ac_ct_OBJDUMP"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5 +$as_echo "$ac_ct_OBJDUMP" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_OBJDUMP" = x; then + OBJDUMP="false" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + OBJDUMP=$ac_ct_OBJDUMP + fi +else + OBJDUMP="$ac_cv_prog_OBJDUMP" +fi + +test -z "$OBJDUMP" && OBJDUMP=objdump + + + + + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to recognize dependent libraries" >&5 +$as_echo_n "checking how to recognize dependent libraries... " >&6; } +if ${lt_cv_deplibs_check_method+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_file_magic_cmd='$MAGIC_CMD' +lt_cv_file_magic_test_file= +lt_cv_deplibs_check_method='unknown' +# Need to set the preceding variable on all platforms that support +# interlibrary dependencies. +# 'none' -- dependencies not supported. +# 'unknown' -- same as none, but documents that we really don't know. +# 'pass_all' -- all dependencies passed with no checks. +# 'test_compile' -- check by making test program. +# 'file_magic [[regex]]' -- check by looking for files in library path +# that responds to the $file_magic_cmd with a given extended regex. +# If you have 'file' or equivalent on your system and you're not sure +# whether 'pass_all' will *always* work, you probably want this one. + +case $host_os in +aix[4-9]*) + lt_cv_deplibs_check_method=pass_all + ;; + +beos*) + lt_cv_deplibs_check_method=pass_all + ;; + +bsdi[45]*) + lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)' + lt_cv_file_magic_cmd='/usr/bin/file -L' + lt_cv_file_magic_test_file=/shlib/libc.so + ;; + +cygwin*) + # func_win32_libid is a shell function defined in ltmain.sh + lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL' + lt_cv_file_magic_cmd='func_win32_libid' + ;; + +mingw* | pw32*) + # Base MSYS/MinGW do not provide the 'file' command needed by + # func_win32_libid shell function, so use a weaker test based on 'objdump', + # unless we find 'file', for example because we are cross-compiling. + if ( file / ) >/dev/null 2>&1; then + lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL' + lt_cv_file_magic_cmd='func_win32_libid' + else + # Keep this pattern in sync with the one in func_win32_libid. + lt_cv_deplibs_check_method='file_magic file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' + lt_cv_file_magic_cmd='$OBJDUMP -f' + fi + ;; + +cegcc*) + # use the weaker test based on 'objdump'. See mingw*. + lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?' + lt_cv_file_magic_cmd='$OBJDUMP -f' + ;; + +darwin* | rhapsody*) + lt_cv_deplibs_check_method=pass_all + ;; + +freebsd* | dragonfly*) + if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then + case $host_cpu in + i*86 ) + # Not sure whether the presence of OpenBSD here was a mistake. + # Let's accept both of them until this is cleared up. + lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library' + lt_cv_file_magic_cmd=/usr/bin/file + lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*` + ;; + esac + else + lt_cv_deplibs_check_method=pass_all + fi + ;; + +haiku*) + lt_cv_deplibs_check_method=pass_all + ;; + +hpux10.20* | hpux11*) + lt_cv_file_magic_cmd=/usr/bin/file + case $host_cpu in + ia64*) + lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - IA64' + lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so + ;; + hppa*64*) + lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]' + lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl + ;; + *) + lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|PA-RISC[0-9]\.[0-9]) shared library' + lt_cv_file_magic_test_file=/usr/lib/libc.sl + ;; + esac + ;; + +interix[3-9]*) + # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here + lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|\.a)$' + ;; + +irix5* | irix6* | nonstopux*) + case $LD in + *-32|*"-32 ") libmagic=32-bit;; + *-n32|*"-n32 ") libmagic=N32;; + *-64|*"-64 ") libmagic=64-bit;; + *) libmagic=never-match;; + esac + lt_cv_deplibs_check_method=pass_all + ;; + +# This must be glibc/ELF. +linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) + lt_cv_deplibs_check_method=pass_all + ;; + +netbsd*) + if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then + lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$' + else + lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|_pic\.a)$' + fi + ;; + +newos6*) + lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (executable|dynamic lib)' + lt_cv_file_magic_cmd=/usr/bin/file + lt_cv_file_magic_test_file=/usr/lib/libnls.so + ;; + +*nto* | *qnx*) + lt_cv_deplibs_check_method=pass_all + ;; + +openbsd* | bitrig*) + if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then + lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|\.so|_pic\.a)$' + else + lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$' + fi + ;; + +osf3* | osf4* | osf5*) + lt_cv_deplibs_check_method=pass_all + ;; + +rdos*) + lt_cv_deplibs_check_method=pass_all + ;; + +solaris*) + lt_cv_deplibs_check_method=pass_all + ;; + +sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) + lt_cv_deplibs_check_method=pass_all + ;; + +sysv4 | sysv4.3*) + case $host_vendor in + motorola) + lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib) M[0-9][0-9]* Version [0-9]' + lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*` + ;; + ncr) + lt_cv_deplibs_check_method=pass_all + ;; + sequent) + lt_cv_file_magic_cmd='/bin/file' + lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )' + ;; + sni) + lt_cv_file_magic_cmd='/bin/file' + lt_cv_deplibs_check_method="file_magic ELF [0-9][0-9]*-bit [LM]SB dynamic lib" + lt_cv_file_magic_test_file=/lib/libc.so + ;; + siemens) + lt_cv_deplibs_check_method=pass_all + ;; + pc) + lt_cv_deplibs_check_method=pass_all + ;; + esac + ;; + +tpf*) + lt_cv_deplibs_check_method=pass_all + ;; +os2*) + lt_cv_deplibs_check_method=pass_all + ;; +esac + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_deplibs_check_method" >&5 +$as_echo "$lt_cv_deplibs_check_method" >&6; } + +file_magic_glob= +want_nocaseglob=no +if test "$build" = "$host"; then + case $host_os in + mingw* | pw32*) + if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then + want_nocaseglob=yes + else + file_magic_glob=`echo aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ | $SED -e "s/\(..\)/s\/[\1]\/[\1]\/g;/g"` + fi + ;; + esac +fi + +file_magic_cmd=$lt_cv_file_magic_cmd +deplibs_check_method=$lt_cv_deplibs_check_method +test -z "$deplibs_check_method" && deplibs_check_method=unknown + + + + + + + + + + + + + + + + + + + + + + +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args. +set dummy ${ac_tool_prefix}dlltool; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_DLLTOOL+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$DLLTOOL"; then + ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +DLLTOOL=$ac_cv_prog_DLLTOOL +if test -n "$DLLTOOL"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DLLTOOL" >&5 +$as_echo "$DLLTOOL" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_DLLTOOL"; then + ac_ct_DLLTOOL=$DLLTOOL + # Extract the first word of "dlltool", so it can be a program name with args. +set dummy dlltool; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_DLLTOOL+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_DLLTOOL"; then + ac_cv_prog_ac_ct_DLLTOOL="$ac_ct_DLLTOOL" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_DLLTOOL="dlltool" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_DLLTOOL=$ac_cv_prog_ac_ct_DLLTOOL +if test -n "$ac_ct_DLLTOOL"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DLLTOOL" >&5 +$as_echo "$ac_ct_DLLTOOL" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_DLLTOOL" = x; then + DLLTOOL="false" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + DLLTOOL=$ac_ct_DLLTOOL + fi +else + DLLTOOL="$ac_cv_prog_DLLTOOL" +fi + +test -z "$DLLTOOL" && DLLTOOL=dlltool + + + + + + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to associate runtime and link libraries" >&5 +$as_echo_n "checking how to associate runtime and link libraries... " >&6; } +if ${lt_cv_sharedlib_from_linklib_cmd+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_sharedlib_from_linklib_cmd='unknown' + +case $host_os in +cygwin* | mingw* | pw32* | cegcc*) + # two different shell functions defined in ltmain.sh; + # decide which one to use based on capabilities of $DLLTOOL + case `$DLLTOOL --help 2>&1` in + *--identify-strict*) + lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib + ;; + *) + lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib_fallback + ;; + esac + ;; +*) + # fallback: assume linklib IS sharedlib + lt_cv_sharedlib_from_linklib_cmd=$ECHO + ;; +esac + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sharedlib_from_linklib_cmd" >&5 +$as_echo "$lt_cv_sharedlib_from_linklib_cmd" >&6; } +sharedlib_from_linklib_cmd=$lt_cv_sharedlib_from_linklib_cmd +test -z "$sharedlib_from_linklib_cmd" && sharedlib_from_linklib_cmd=$ECHO + + + + + + + + +if test -n "$ac_tool_prefix"; then + for ac_prog in ar + do + # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. +set dummy $ac_tool_prefix$ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_AR+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$AR"; then + ac_cv_prog_AR="$AR" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_AR="$ac_tool_prefix$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +AR=$ac_cv_prog_AR +if test -n "$AR"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5 +$as_echo "$AR" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$AR" && break + done +fi +if test -z "$AR"; then + ac_ct_AR=$AR + for ac_prog in ar +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_AR+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_AR"; then + ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_AR="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_AR=$ac_cv_prog_ac_ct_AR +if test -n "$ac_ct_AR"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5 +$as_echo "$ac_ct_AR" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$ac_ct_AR" && break +done + + if test "x$ac_ct_AR" = x; then + AR="false" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + AR=$ac_ct_AR + fi +fi + +: ${AR=ar} +: ${AR_FLAGS=cru} + + + + + + + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for archiver @FILE support" >&5 +$as_echo_n "checking for archiver @FILE support... " >&6; } +if ${lt_cv_ar_at_file+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_ar_at_file=no + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + echo conftest.$ac_objext > conftest.lst + lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&5' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5 + (eval $lt_ar_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } + if test 0 -eq "$ac_status"; then + # Ensure the archiver fails upon bogus file names. + rm -f conftest.$ac_objext libconftest.a + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5 + (eval $lt_ar_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } + if test 0 -ne "$ac_status"; then + lt_cv_ar_at_file=@ + fi + fi + rm -f conftest.* libconftest.a + +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ar_at_file" >&5 +$as_echo "$lt_cv_ar_at_file" >&6; } + +if test no = "$lt_cv_ar_at_file"; then + archiver_list_spec= +else + archiver_list_spec=$lt_cv_ar_at_file +fi + + + + + + + +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args. +set dummy ${ac_tool_prefix}strip; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_STRIP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$STRIP"; then + ac_cv_prog_STRIP="$STRIP" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_STRIP="${ac_tool_prefix}strip" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +STRIP=$ac_cv_prog_STRIP +if test -n "$STRIP"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5 +$as_echo "$STRIP" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_STRIP"; then + ac_ct_STRIP=$STRIP + # Extract the first word of "strip", so it can be a program name with args. +set dummy strip; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_STRIP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_STRIP"; then + ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_STRIP="strip" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP +if test -n "$ac_ct_STRIP"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5 +$as_echo "$ac_ct_STRIP" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_STRIP" = x; then + STRIP=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + STRIP=$ac_ct_STRIP + fi +else + STRIP="$ac_cv_prog_STRIP" +fi + +test -z "$STRIP" && STRIP=: + + + + + + +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args. +set dummy ${ac_tool_prefix}ranlib; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_RANLIB+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$RANLIB"; then + ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +RANLIB=$ac_cv_prog_RANLIB +if test -n "$RANLIB"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5 +$as_echo "$RANLIB" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_RANLIB"; then + ac_ct_RANLIB=$RANLIB + # Extract the first word of "ranlib", so it can be a program name with args. +set dummy ranlib; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_RANLIB+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_RANLIB"; then + ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_RANLIB="ranlib" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB +if test -n "$ac_ct_RANLIB"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5 +$as_echo "$ac_ct_RANLIB" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_RANLIB" = x; then + RANLIB=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + RANLIB=$ac_ct_RANLIB + fi +else + RANLIB="$ac_cv_prog_RANLIB" +fi + +test -z "$RANLIB" && RANLIB=: + + + + + + +# Determine commands to create old-style static archives. +old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs' +old_postinstall_cmds='chmod 644 $oldlib' +old_postuninstall_cmds= + +if test -n "$RANLIB"; then + case $host_os in + bitrig* | openbsd*) + old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib" + ;; + *) + old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib" + ;; + esac + old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib" +fi + +case $host_os in + darwin*) + lock_old_archive_extraction=yes ;; + *) + lock_old_archive_extraction=no ;; +esac + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +# If no C compiler was specified, use CC. +LTCC=${LTCC-"$CC"} + +# If no C compiler flags were specified, use CFLAGS. +LTCFLAGS=${LTCFLAGS-"$CFLAGS"} + +# Allow CC to be a program name with arguments. +compiler=$CC + + +# Check for command to grab the raw symbol name followed by C symbol from nm. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking command to parse $NM output from $compiler object" >&5 +$as_echo_n "checking command to parse $NM output from $compiler object... " >&6; } +if ${lt_cv_sys_global_symbol_pipe+:} false; then : + $as_echo_n "(cached) " >&6 +else + +# These are sane defaults that work on at least a few old systems. +# [They come from Ultrix. What could be older than Ultrix?!! ;)] + +# Character class describing NM global symbol codes. +symcode='[BCDEGRST]' + +# Regexp to match symbols that can be accessed directly from C. +sympat='\([_A-Za-z][_A-Za-z0-9]*\)' + +# Define system-specific variables. +case $host_os in +aix*) + symcode='[BCDT]' + ;; +cygwin* | mingw* | pw32* | cegcc*) + symcode='[ABCDGISTW]' + ;; +hpux*) + if test ia64 = "$host_cpu"; then + symcode='[ABCDEGRST]' + fi + ;; +irix* | nonstopux*) + symcode='[BCDEGRST]' + ;; +osf*) + symcode='[BCDEGQRST]' + ;; +solaris*) + symcode='[BDRT]' + ;; +sco3.2v5*) + symcode='[DT]' + ;; +sysv4.2uw2*) + symcode='[DT]' + ;; +sysv5* | sco5v6* | unixware* | OpenUNIX*) + symcode='[ABDT]' + ;; +sysv4) + symcode='[DFNSTU]' + ;; +esac + +# If we're using GNU nm, then use its standard symbol codes. +case `$NM -V 2>&1` in +*GNU* | *'with BFD'*) + symcode='[ABCDGIRSTW]' ;; +esac + +if test "$lt_cv_nm_interface" = "MS dumpbin"; then + # Gets list of data symbols to import. + lt_cv_sys_global_symbol_to_import="sed -n -e 's/^I .* \(.*\)$/\1/p'" + # Adjust the below global symbol transforms to fixup imported variables. + lt_cdecl_hook=" -e 's/^I .* \(.*\)$/extern __declspec(dllimport) char \1;/p'" + lt_c_name_hook=" -e 's/^I .* \(.*\)$/ {\"\1\", (void *) 0},/p'" + lt_c_name_lib_hook="\ + -e 's/^I .* \(lib.*\)$/ {\"\1\", (void *) 0},/p'\ + -e 's/^I .* \(.*\)$/ {\"lib\1\", (void *) 0},/p'" +else + # Disable hooks by default. + lt_cv_sys_global_symbol_to_import= + lt_cdecl_hook= + lt_c_name_hook= + lt_c_name_lib_hook= +fi + +# Transform an extracted symbol line into a proper C declaration. +# Some systems (esp. on ia64) link data and code symbols differently, +# so use this general approach. +lt_cv_sys_global_symbol_to_cdecl="sed -n"\ +$lt_cdecl_hook\ +" -e 's/^T .* \(.*\)$/extern int \1();/p'"\ +" -e 's/^$symcode$symcode* .* \(.*\)$/extern char \1;/p'" + +# Transform an extracted symbol line into symbol name and symbol address +lt_cv_sys_global_symbol_to_c_name_address="sed -n"\ +$lt_c_name_hook\ +" -e 's/^: \(.*\) .*$/ {\"\1\", (void *) 0},/p'"\ +" -e 's/^$symcode$symcode* .* \(.*\)$/ {\"\1\", (void *) \&\1},/p'" + +# Transform an extracted symbol line into symbol name with lib prefix and +# symbol address. +lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n"\ +$lt_c_name_lib_hook\ +" -e 's/^: \(.*\) .*$/ {\"\1\", (void *) 0},/p'"\ +" -e 's/^$symcode$symcode* .* \(lib.*\)$/ {\"\1\", (void *) \&\1},/p'"\ +" -e 's/^$symcode$symcode* .* \(.*\)$/ {\"lib\1\", (void *) \&\1},/p'" + +# Handle CRLF in mingw tool chain +opt_cr= +case $build_os in +mingw*) + opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp + ;; +esac + +# Try without a prefix underscore, then with it. +for ac_symprfx in "" "_"; do + + # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol. + symxfrm="\\1 $ac_symprfx\\2 \\2" + + # Write the raw and C identifiers. + if test "$lt_cv_nm_interface" = "MS dumpbin"; then + # Fake it for dumpbin and say T for any non-static function, + # D for any global variable and I for any imported variable. + # Also find C++ and __fastcall symbols from MSVC++, + # which start with @ or ?. + lt_cv_sys_global_symbol_pipe="$AWK '"\ +" {last_section=section; section=\$ 3};"\ +" /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\ +" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\ +" /^ *Symbol name *: /{split(\$ 0,sn,\":\"); si=substr(sn[2],2)};"\ +" /^ *Type *: code/{print \"T\",si,substr(si,length(prfx))};"\ +" /^ *Type *: data/{print \"I\",si,substr(si,length(prfx))};"\ +" \$ 0!~/External *\|/{next};"\ +" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\ +" {if(hide[section]) next};"\ +" {f=\"D\"}; \$ 0~/\(\).*\|/{f=\"T\"};"\ +" {split(\$ 0,a,/\||\r/); split(a[2],s)};"\ +" s[1]~/^[@?]/{print f,s[1],s[1]; next};"\ +" s[1]~prfx {split(s[1],t,\"@\"); print f,t[1],substr(t[1],length(prfx))}"\ +" ' prfx=^$ac_symprfx" + else + lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[ ]\($symcode$symcode*\)[ ][ ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'" + fi + lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'" + + # Check to see that the pipe works correctly. + pipe_works=no + + rm -f conftest* + cat > conftest.$ac_ext <<_LT_EOF +#ifdef __cplusplus +extern "C" { +#endif +char nm_test_var; +void nm_test_func(void); +void nm_test_func(void){} +#ifdef __cplusplus +} +#endif +int main(){nm_test_var='a';nm_test_func();return(0);} +_LT_EOF + + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 + (eval $ac_compile) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + # Now try to grab the symbols. + nlist=conftest.nm + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist\""; } >&5 + (eval $NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } && test -s "$nlist"; then + # Try sorting and uniquifying the output. + if sort "$nlist" | uniq > "$nlist"T; then + mv -f "$nlist"T "$nlist" + else + rm -f "$nlist"T + fi + + # Make sure that we snagged all the symbols we need. + if $GREP ' nm_test_var$' "$nlist" >/dev/null; then + if $GREP ' nm_test_func$' "$nlist" >/dev/null; then + cat <<_LT_EOF > conftest.$ac_ext +/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */ +#if defined _WIN32 || defined __CYGWIN__ || defined _WIN32_WCE +/* DATA imports from DLLs on WIN32 can't be const, because runtime + relocations are performed -- see ld's documentation on pseudo-relocs. */ +# define LT_DLSYM_CONST +#elif defined __osf__ +/* This system does not cope well with relocations in const data. */ +# define LT_DLSYM_CONST +#else +# define LT_DLSYM_CONST const +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +_LT_EOF + # Now generate the symbol file. + eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext' + + cat <<_LT_EOF >> conftest.$ac_ext + +/* The mapping between symbol names and symbols. */ +LT_DLSYM_CONST struct { + const char *name; + void *address; +} +lt__PROGRAM__LTX_preloaded_symbols[] = +{ + { "@PROGRAM@", (void *) 0 }, +_LT_EOF + $SED "s/^$symcode$symcode* .* \(.*\)$/ {\"\1\", (void *) \&\1},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext + cat <<\_LT_EOF >> conftest.$ac_ext + {0, (void *) 0} +}; + +/* This works around a problem in FreeBSD linker */ +#ifdef FREEBSD_WORKAROUND +static const void *lt_preloaded_setup() { + return lt__PROGRAM__LTX_preloaded_symbols; +} +#endif + +#ifdef __cplusplus +} +#endif +_LT_EOF + # Now try linking the two files. + mv conftest.$ac_objext conftstm.$ac_objext + lt_globsym_save_LIBS=$LIBS + lt_globsym_save_CFLAGS=$CFLAGS + LIBS=conftstm.$ac_objext + CFLAGS="$CFLAGS$lt_prog_compiler_no_builtin_flag" + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5 + (eval $ac_link) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } && test -s conftest$ac_exeext; then + pipe_works=yes + fi + LIBS=$lt_globsym_save_LIBS + CFLAGS=$lt_globsym_save_CFLAGS + else + echo "cannot find nm_test_func in $nlist" >&5 + fi + else + echo "cannot find nm_test_var in $nlist" >&5 + fi + else + echo "cannot run $lt_cv_sys_global_symbol_pipe" >&5 + fi + else + echo "$progname: failed program was:" >&5 + cat conftest.$ac_ext >&5 + fi + rm -rf conftest* conftst* + + # Do not use the global_symbol_pipe unless it works. + if test yes = "$pipe_works"; then + break + else + lt_cv_sys_global_symbol_pipe= + fi +done + +fi + +if test -z "$lt_cv_sys_global_symbol_pipe"; then + lt_cv_sys_global_symbol_to_cdecl= +fi +if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: failed" >&5 +$as_echo "failed" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5 +$as_echo "ok" >&6; } +fi + +# Response file support. +if test "$lt_cv_nm_interface" = "MS dumpbin"; then + nm_file_list_spec='@' +elif $NM --help 2>/dev/null | grep '[@]FILE' >/dev/null; then + nm_file_list_spec='@' +fi + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysroot" >&5 +$as_echo_n "checking for sysroot... " >&6; } + +# Check whether --with-sysroot was given. +if test "${with_sysroot+set}" = set; then : + withval=$with_sysroot; +else + with_sysroot=no +fi + + +lt_sysroot= +case $with_sysroot in #( + yes) + if test yes = "$GCC"; then + lt_sysroot=`$CC --print-sysroot 2>/dev/null` + fi + ;; #( + /*) + lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"` + ;; #( + no|'') + ;; #( + *) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_sysroot" >&5 +$as_echo "$with_sysroot" >&6; } + as_fn_error $? "The sysroot must be an absolute path." "$LINENO" 5 + ;; +esac + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${lt_sysroot:-no}" >&5 +$as_echo "${lt_sysroot:-no}" >&6; } + + + + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a working dd" >&5 +$as_echo_n "checking for a working dd... " >&6; } +if ${ac_cv_path_lt_DD+:} false; then : + $as_echo_n "(cached) " >&6 +else + printf 0123456789abcdef0123456789abcdef >conftest.i +cat conftest.i conftest.i >conftest2.i +: ${lt_DD:=$DD} +if test -z "$lt_DD"; then + ac_path_lt_DD_found=false + # Loop through the user's path and test for each of PROGNAME-LIST + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in dd; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_lt_DD="$as_dir/$ac_prog$ac_exec_ext" + as_fn_executable_p "$ac_path_lt_DD" || continue +if "$ac_path_lt_DD" bs=32 count=1 conftest.out 2>/dev/null; then + cmp -s conftest.i conftest.out \ + && ac_cv_path_lt_DD="$ac_path_lt_DD" ac_path_lt_DD_found=: +fi + $ac_path_lt_DD_found && break 3 + done + done + done +IFS=$as_save_IFS + if test -z "$ac_cv_path_lt_DD"; then + : + fi +else + ac_cv_path_lt_DD=$lt_DD +fi + +rm -f conftest.i conftest2.i conftest.out +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_lt_DD" >&5 +$as_echo "$ac_cv_path_lt_DD" >&6; } + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to truncate binary pipes" >&5 +$as_echo_n "checking how to truncate binary pipes... " >&6; } +if ${lt_cv_truncate_bin+:} false; then : + $as_echo_n "(cached) " >&6 +else + printf 0123456789abcdef0123456789abcdef >conftest.i +cat conftest.i conftest.i >conftest2.i +lt_cv_truncate_bin= +if "$ac_cv_path_lt_DD" bs=32 count=1 conftest.out 2>/dev/null; then + cmp -s conftest.i conftest.out \ + && lt_cv_truncate_bin="$ac_cv_path_lt_DD bs=4096 count=1" +fi +rm -f conftest.i conftest2.i conftest.out +test -z "$lt_cv_truncate_bin" && lt_cv_truncate_bin="$SED -e 4q" +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_truncate_bin" >&5 +$as_echo "$lt_cv_truncate_bin" >&6; } + + + + + + + +# Calculate cc_basename. Skip known compiler wrappers and cross-prefix. +func_cc_basename () +{ + for cc_temp in $*""; do + case $cc_temp in + compile | *[\\/]compile | ccache | *[\\/]ccache ) ;; + distcc | *[\\/]distcc | purify | *[\\/]purify ) ;; + \-*) ;; + *) break;; + esac + done + func_cc_basename_result=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"` +} + +# Check whether --enable-libtool-lock was given. +if test "${enable_libtool_lock+set}" = set; then : + enableval=$enable_libtool_lock; +fi + +test no = "$enable_libtool_lock" || enable_libtool_lock=yes + +# Some flags need to be propagated to the compiler or linker for good +# libtool support. +case $host in +ia64-*-hpux*) + # Find out what ABI is being produced by ac_compile, and set mode + # options accordingly. + echo 'int i;' > conftest.$ac_ext + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 + (eval $ac_compile) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + case `/usr/bin/file conftest.$ac_objext` in + *ELF-32*) + HPUX_IA64_MODE=32 + ;; + *ELF-64*) + HPUX_IA64_MODE=64 + ;; + esac + fi + rm -rf conftest* + ;; +*-*-irix6*) + # Find out what ABI is being produced by ac_compile, and set linker + # options accordingly. + echo '#line '$LINENO' "configure"' > conftest.$ac_ext + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 + (eval $ac_compile) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + if test yes = "$lt_cv_prog_gnu_ld"; then + case `/usr/bin/file conftest.$ac_objext` in + *32-bit*) + LD="${LD-ld} -melf32bsmip" + ;; + *N32*) + LD="${LD-ld} -melf32bmipn32" + ;; + *64-bit*) + LD="${LD-ld} -melf64bmip" + ;; + esac + else + case `/usr/bin/file conftest.$ac_objext` in + *32-bit*) + LD="${LD-ld} -32" + ;; + *N32*) + LD="${LD-ld} -n32" + ;; + *64-bit*) + LD="${LD-ld} -64" + ;; + esac + fi + fi + rm -rf conftest* + ;; + +mips64*-*linux*) + # Find out what ABI is being produced by ac_compile, and set linker + # options accordingly. + echo '#line '$LINENO' "configure"' > conftest.$ac_ext + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 + (eval $ac_compile) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + emul=elf + case `/usr/bin/file conftest.$ac_objext` in + *32-bit*) + emul="${emul}32" + ;; + *64-bit*) + emul="${emul}64" + ;; + esac + case `/usr/bin/file conftest.$ac_objext` in + *MSB*) + emul="${emul}btsmip" + ;; + *LSB*) + emul="${emul}ltsmip" + ;; + esac + case `/usr/bin/file conftest.$ac_objext` in + *N32*) + emul="${emul}n32" + ;; + esac + LD="${LD-ld} -m $emul" + fi + rm -rf conftest* + ;; + +x86_64-*kfreebsd*-gnu|x86_64-*linux*|powerpc*-*linux*| \ +s390*-*linux*|s390*-*tpf*|sparc*-*linux*) + # Find out what ABI is being produced by ac_compile, and set linker + # options accordingly. Note that the listed cases only cover the + # situations where additional linker options are needed (such as when + # doing 32-bit compilation for a host where ld defaults to 64-bit, or + # vice versa); the common cases where no linker options are needed do + # not appear in the list. + echo 'int i;' > conftest.$ac_ext + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 + (eval $ac_compile) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + case `/usr/bin/file conftest.o` in + *32-bit*) + case $host in + x86_64-*kfreebsd*-gnu) + LD="${LD-ld} -m elf_i386_fbsd" + ;; + x86_64-*linux*) + case `/usr/bin/file conftest.o` in + *x86-64*) + LD="${LD-ld} -m elf32_x86_64" + ;; + *) + LD="${LD-ld} -m elf_i386" + ;; + esac + ;; + powerpc64le-*linux*) + LD="${LD-ld} -m elf32lppclinux" + ;; + powerpc64-*linux*) + LD="${LD-ld} -m elf32ppclinux" + ;; + s390x-*linux*) + LD="${LD-ld} -m elf_s390" + ;; + sparc64-*linux*) + LD="${LD-ld} -m elf32_sparc" + ;; + esac + ;; + *64-bit*) + case $host in + x86_64-*kfreebsd*-gnu) + LD="${LD-ld} -m elf_x86_64_fbsd" + ;; + x86_64-*linux*) + LD="${LD-ld} -m elf_x86_64" + ;; + powerpcle-*linux*) + LD="${LD-ld} -m elf64lppc" + ;; + powerpc-*linux*) + LD="${LD-ld} -m elf64ppc" + ;; + s390*-*linux*|s390*-*tpf*) + LD="${LD-ld} -m elf64_s390" + ;; + sparc*-*linux*) + LD="${LD-ld} -m elf64_sparc" + ;; + esac + ;; + esac + fi + rm -rf conftest* + ;; + +*-*-sco3.2v5*) + # On SCO OpenServer 5, we need -belf to get full-featured binaries. + SAVE_CFLAGS=$CFLAGS + CFLAGS="$CFLAGS -belf" + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler needs -belf" >&5 +$as_echo_n "checking whether the C compiler needs -belf... " >&6; } +if ${lt_cv_cc_needs_belf+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + lt_cv_cc_needs_belf=yes +else + lt_cv_cc_needs_belf=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_cc_needs_belf" >&5 +$as_echo "$lt_cv_cc_needs_belf" >&6; } + if test yes != "$lt_cv_cc_needs_belf"; then + # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf + CFLAGS=$SAVE_CFLAGS + fi + ;; +*-*solaris*) + # Find out what ABI is being produced by ac_compile, and set linker + # options accordingly. + echo 'int i;' > conftest.$ac_ext + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 + (eval $ac_compile) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + case `/usr/bin/file conftest.o` in + *64-bit*) + case $lt_cv_prog_gnu_ld in + yes*) + case $host in + i?86-*-solaris*|x86_64-*-solaris*) + LD="${LD-ld} -m elf_x86_64" + ;; + sparc*-*-solaris*) + LD="${LD-ld} -m elf64_sparc" + ;; + esac + # GNU ld 2.21 introduced _sol2 emulations. Use them if available. + if ${LD-ld} -V | grep _sol2 >/dev/null 2>&1; then + LD=${LD-ld}_sol2 + fi + ;; + *) + if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then + LD="${LD-ld} -64" + fi + ;; + esac + ;; + esac + fi + rm -rf conftest* + ;; +esac + +need_locks=$enable_libtool_lock + +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}mt", so it can be a program name with args. +set dummy ${ac_tool_prefix}mt; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_MANIFEST_TOOL+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$MANIFEST_TOOL"; then + ac_cv_prog_MANIFEST_TOOL="$MANIFEST_TOOL" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_MANIFEST_TOOL="${ac_tool_prefix}mt" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +MANIFEST_TOOL=$ac_cv_prog_MANIFEST_TOOL +if test -n "$MANIFEST_TOOL"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MANIFEST_TOOL" >&5 +$as_echo "$MANIFEST_TOOL" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_MANIFEST_TOOL"; then + ac_ct_MANIFEST_TOOL=$MANIFEST_TOOL + # Extract the first word of "mt", so it can be a program name with args. +set dummy mt; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_MANIFEST_TOOL+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_MANIFEST_TOOL"; then + ac_cv_prog_ac_ct_MANIFEST_TOOL="$ac_ct_MANIFEST_TOOL" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_MANIFEST_TOOL="mt" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_MANIFEST_TOOL=$ac_cv_prog_ac_ct_MANIFEST_TOOL +if test -n "$ac_ct_MANIFEST_TOOL"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_MANIFEST_TOOL" >&5 +$as_echo "$ac_ct_MANIFEST_TOOL" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_MANIFEST_TOOL" = x; then + MANIFEST_TOOL=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + MANIFEST_TOOL=$ac_ct_MANIFEST_TOOL + fi +else + MANIFEST_TOOL="$ac_cv_prog_MANIFEST_TOOL" +fi + +test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $MANIFEST_TOOL is a manifest tool" >&5 +$as_echo_n "checking if $MANIFEST_TOOL is a manifest tool... " >&6; } +if ${lt_cv_path_mainfest_tool+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_path_mainfest_tool=no + echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&5 + $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out + cat conftest.err >&5 + if $GREP 'Manifest Tool' conftest.out > /dev/null; then + lt_cv_path_mainfest_tool=yes + fi + rm -f conftest* +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_mainfest_tool" >&5 +$as_echo "$lt_cv_path_mainfest_tool" >&6; } +if test yes != "$lt_cv_path_mainfest_tool"; then + MANIFEST_TOOL=: +fi + + + + + + + case $host_os in + rhapsody* | darwin*) + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}dsymutil", so it can be a program name with args. +set dummy ${ac_tool_prefix}dsymutil; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_DSYMUTIL+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$DSYMUTIL"; then + ac_cv_prog_DSYMUTIL="$DSYMUTIL" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_DSYMUTIL="${ac_tool_prefix}dsymutil" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +DSYMUTIL=$ac_cv_prog_DSYMUTIL +if test -n "$DSYMUTIL"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL" >&5 +$as_echo "$DSYMUTIL" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_DSYMUTIL"; then + ac_ct_DSYMUTIL=$DSYMUTIL + # Extract the first word of "dsymutil", so it can be a program name with args. +set dummy dsymutil; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_DSYMUTIL+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_DSYMUTIL"; then + ac_cv_prog_ac_ct_DSYMUTIL="$ac_ct_DSYMUTIL" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_DSYMUTIL="dsymutil" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_DSYMUTIL=$ac_cv_prog_ac_ct_DSYMUTIL +if test -n "$ac_ct_DSYMUTIL"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DSYMUTIL" >&5 +$as_echo "$ac_ct_DSYMUTIL" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_DSYMUTIL" = x; then + DSYMUTIL=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + DSYMUTIL=$ac_ct_DSYMUTIL + fi +else + DSYMUTIL="$ac_cv_prog_DSYMUTIL" +fi + + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}nmedit", so it can be a program name with args. +set dummy ${ac_tool_prefix}nmedit; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_NMEDIT+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$NMEDIT"; then + ac_cv_prog_NMEDIT="$NMEDIT" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_NMEDIT="${ac_tool_prefix}nmedit" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +NMEDIT=$ac_cv_prog_NMEDIT +if test -n "$NMEDIT"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NMEDIT" >&5 +$as_echo "$NMEDIT" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_NMEDIT"; then + ac_ct_NMEDIT=$NMEDIT + # Extract the first word of "nmedit", so it can be a program name with args. +set dummy nmedit; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_NMEDIT+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_NMEDIT"; then + ac_cv_prog_ac_ct_NMEDIT="$ac_ct_NMEDIT" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_NMEDIT="nmedit" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_NMEDIT=$ac_cv_prog_ac_ct_NMEDIT +if test -n "$ac_ct_NMEDIT"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NMEDIT" >&5 +$as_echo "$ac_ct_NMEDIT" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_NMEDIT" = x; then + NMEDIT=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + NMEDIT=$ac_ct_NMEDIT + fi +else + NMEDIT="$ac_cv_prog_NMEDIT" +fi + + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}lipo", so it can be a program name with args. +set dummy ${ac_tool_prefix}lipo; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_LIPO+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$LIPO"; then + ac_cv_prog_LIPO="$LIPO" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_LIPO="${ac_tool_prefix}lipo" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +LIPO=$ac_cv_prog_LIPO +if test -n "$LIPO"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIPO" >&5 +$as_echo "$LIPO" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_LIPO"; then + ac_ct_LIPO=$LIPO + # Extract the first word of "lipo", so it can be a program name with args. +set dummy lipo; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_LIPO+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_LIPO"; then + ac_cv_prog_ac_ct_LIPO="$ac_ct_LIPO" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_LIPO="lipo" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_LIPO=$ac_cv_prog_ac_ct_LIPO +if test -n "$ac_ct_LIPO"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_LIPO" >&5 +$as_echo "$ac_ct_LIPO" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_LIPO" = x; then + LIPO=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + LIPO=$ac_ct_LIPO + fi +else + LIPO="$ac_cv_prog_LIPO" +fi + + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}otool", so it can be a program name with args. +set dummy ${ac_tool_prefix}otool; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_OTOOL+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$OTOOL"; then + ac_cv_prog_OTOOL="$OTOOL" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_OTOOL="${ac_tool_prefix}otool" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +OTOOL=$ac_cv_prog_OTOOL +if test -n "$OTOOL"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL" >&5 +$as_echo "$OTOOL" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_OTOOL"; then + ac_ct_OTOOL=$OTOOL + # Extract the first word of "otool", so it can be a program name with args. +set dummy otool; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_OTOOL+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_OTOOL"; then + ac_cv_prog_ac_ct_OTOOL="$ac_ct_OTOOL" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_OTOOL="otool" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_OTOOL=$ac_cv_prog_ac_ct_OTOOL +if test -n "$ac_ct_OTOOL"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL" >&5 +$as_echo "$ac_ct_OTOOL" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_OTOOL" = x; then + OTOOL=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + OTOOL=$ac_ct_OTOOL + fi +else + OTOOL="$ac_cv_prog_OTOOL" +fi + + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}otool64", so it can be a program name with args. +set dummy ${ac_tool_prefix}otool64; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_OTOOL64+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$OTOOL64"; then + ac_cv_prog_OTOOL64="$OTOOL64" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_OTOOL64="${ac_tool_prefix}otool64" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +OTOOL64=$ac_cv_prog_OTOOL64 +if test -n "$OTOOL64"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL64" >&5 +$as_echo "$OTOOL64" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_OTOOL64"; then + ac_ct_OTOOL64=$OTOOL64 + # Extract the first word of "otool64", so it can be a program name with args. +set dummy otool64; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_OTOOL64+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_OTOOL64"; then + ac_cv_prog_ac_ct_OTOOL64="$ac_ct_OTOOL64" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_OTOOL64="otool64" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_OTOOL64=$ac_cv_prog_ac_ct_OTOOL64 +if test -n "$ac_ct_OTOOL64"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL64" >&5 +$as_echo "$ac_ct_OTOOL64" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_OTOOL64" = x; then + OTOOL64=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + OTOOL64=$ac_ct_OTOOL64 + fi +else + OTOOL64="$ac_cv_prog_OTOOL64" +fi + + + + + + + + + + + + + + + + + + + + + + + + + + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -single_module linker flag" >&5 +$as_echo_n "checking for -single_module linker flag... " >&6; } +if ${lt_cv_apple_cc_single_mod+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_apple_cc_single_mod=no + if test -z "$LT_MULTI_MODULE"; then + # By default we will add the -single_module flag. You can override + # by either setting the environment variable LT_MULTI_MODULE + # non-empty at configure time, or by adding -multi_module to the + # link flags. + rm -rf libconftest.dylib* + echo "int foo(void){return 1;}" > conftest.c + echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \ +-dynamiclib -Wl,-single_module conftest.c" >&5 + $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \ + -dynamiclib -Wl,-single_module conftest.c 2>conftest.err + _lt_result=$? + # If there is a non-empty error log, and "single_module" + # appears in it, assume the flag caused a linker warning + if test -s conftest.err && $GREP single_module conftest.err; then + cat conftest.err >&5 + # Otherwise, if the output was created with a 0 exit code from + # the compiler, it worked. + elif test -f libconftest.dylib && test 0 = "$_lt_result"; then + lt_cv_apple_cc_single_mod=yes + else + cat conftest.err >&5 + fi + rm -rf libconftest.dylib* + rm -f conftest.* + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_apple_cc_single_mod" >&5 +$as_echo "$lt_cv_apple_cc_single_mod" >&6; } + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -exported_symbols_list linker flag" >&5 +$as_echo_n "checking for -exported_symbols_list linker flag... " >&6; } +if ${lt_cv_ld_exported_symbols_list+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_ld_exported_symbols_list=no + save_LDFLAGS=$LDFLAGS + echo "_main" > conftest.sym + LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + lt_cv_ld_exported_symbols_list=yes +else + lt_cv_ld_exported_symbols_list=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + LDFLAGS=$save_LDFLAGS + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_exported_symbols_list" >&5 +$as_echo "$lt_cv_ld_exported_symbols_list" >&6; } + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -force_load linker flag" >&5 +$as_echo_n "checking for -force_load linker flag... " >&6; } +if ${lt_cv_ld_force_load+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_ld_force_load=no + cat > conftest.c << _LT_EOF +int forced_loaded() { return 2;} +_LT_EOF + echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&5 + $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&5 + echo "$AR cru libconftest.a conftest.o" >&5 + $AR cru libconftest.a conftest.o 2>&5 + echo "$RANLIB libconftest.a" >&5 + $RANLIB libconftest.a 2>&5 + cat > conftest.c << _LT_EOF +int main() { return 0;} +_LT_EOF + echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&5 + $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err + _lt_result=$? + if test -s conftest.err && $GREP force_load conftest.err; then + cat conftest.err >&5 + elif test -f conftest && test 0 = "$_lt_result" && $GREP forced_load conftest >/dev/null 2>&1; then + lt_cv_ld_force_load=yes + else + cat conftest.err >&5 + fi + rm -f conftest.err libconftest.a conftest conftest.c + rm -rf conftest.dSYM + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_force_load" >&5 +$as_echo "$lt_cv_ld_force_load" >&6; } + case $host_os in + rhapsody* | darwin1.[012]) + _lt_dar_allow_undefined='$wl-undefined ${wl}suppress' ;; + darwin1.*) + _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;; + darwin*) # darwin 5.x on + # if running on 10.5 or later, the deployment target defaults + # to the OS version, if on x86, and 10.4, the deployment + # target defaults to 10.4. Don't you love it? + case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in + 10.0,*86*-darwin8*|10.0,*-darwin[91]*) + _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;; + 10.[012][,.]*) + _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;; + 10.*) + _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;; + esac + ;; + esac + if test yes = "$lt_cv_apple_cc_single_mod"; then + _lt_dar_single_mod='$single_module' + fi + if test yes = "$lt_cv_ld_exported_symbols_list"; then + _lt_dar_export_syms=' $wl-exported_symbols_list,$output_objdir/$libname-symbols.expsym' + else + _lt_dar_export_syms='~$NMEDIT -s $output_objdir/$libname-symbols.expsym $lib' + fi + if test : != "$DSYMUTIL" && test no = "$lt_cv_ld_force_load"; then + _lt_dsymutil='~$DSYMUTIL $lib || :' + else + _lt_dsymutil= + fi + ;; + esac + +# func_munge_path_list VARIABLE PATH +# ----------------------------------- +# VARIABLE is name of variable containing _space_ separated list of +# directories to be munged by the contents of PATH, which is string +# having a format: +# "DIR[:DIR]:" +# string "DIR[ DIR]" will be prepended to VARIABLE +# ":DIR[:DIR]" +# string "DIR[ DIR]" will be appended to VARIABLE +# "DIRP[:DIRP]::[DIRA:]DIRA" +# string "DIRP[ DIRP]" will be prepended to VARIABLE and string +# "DIRA[ DIRA]" will be appended to VARIABLE +# "DIR[:DIR]" +# VARIABLE will be replaced by "DIR[ DIR]" +func_munge_path_list () +{ + case x$2 in + x) + ;; + *:) + eval $1=\"`$ECHO $2 | $SED 's/:/ /g'` \$$1\" + ;; + x:*) + eval $1=\"\$$1 `$ECHO $2 | $SED 's/:/ /g'`\" + ;; + *::*) + eval $1=\"\$$1\ `$ECHO $2 | $SED -e 's/.*:://' -e 's/:/ /g'`\" + eval $1=\"`$ECHO $2 | $SED -e 's/::.*//' -e 's/:/ /g'`\ \$$1\" + ;; + *) + eval $1=\"`$ECHO $2 | $SED 's/:/ /g'`\" + ;; + esac +} + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5 +$as_echo_n "checking how to run the C preprocessor... " >&6; } +# On Suns, sometimes $CPP names a directory. +if test -n "$CPP" && test -d "$CPP"; then + CPP= +fi +if test -z "$CPP"; then + if ${ac_cv_prog_CPP+:} false; then : + $as_echo_n "(cached) " >&6 +else + # Double quotes because CPP needs to be expanded + for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp" + do + ac_preproc_ok=false +for ac_c_preproc_warn_flag in '' yes +do + # Use a header file that comes with gcc, so configuring glibc + # with a fresh cross-compiler works. + # Prefer to if __STDC__ is defined, since + # exists even on freestanding compilers. + # On the NeXT, cc -E runs the code through the compiler's parser, + # not just through cpp. "Syntax error" is here to catch this case. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#ifdef __STDC__ +# include +#else +# include +#endif + Syntax error +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + +else + # Broken: fails on valid input. +continue +fi +rm -f conftest.err conftest.i conftest.$ac_ext + + # OK, works on sane cases. Now check whether nonexistent headers + # can be detected and how. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + # Broken: success on invalid input. +continue +else + # Passes both tests. +ac_preproc_ok=: +break +fi +rm -f conftest.err conftest.i conftest.$ac_ext + +done +# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped. +rm -f conftest.i conftest.err conftest.$ac_ext +if $ac_preproc_ok; then : + break +fi + + done + ac_cv_prog_CPP=$CPP + +fi + CPP=$ac_cv_prog_CPP +else + ac_cv_prog_CPP=$CPP +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5 +$as_echo "$CPP" >&6; } +ac_preproc_ok=false +for ac_c_preproc_warn_flag in '' yes +do + # Use a header file that comes with gcc, so configuring glibc + # with a fresh cross-compiler works. + # Prefer to if __STDC__ is defined, since + # exists even on freestanding compilers. + # On the NeXT, cc -E runs the code through the compiler's parser, + # not just through cpp. "Syntax error" is here to catch this case. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#ifdef __STDC__ +# include +#else +# include +#endif + Syntax error +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + +else + # Broken: fails on valid input. +continue +fi +rm -f conftest.err conftest.i conftest.$ac_ext + + # OK, works on sane cases. Now check whether nonexistent headers + # can be detected and how. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +_ACEOF +if ac_fn_c_try_cpp "$LINENO"; then : + # Broken: success on invalid input. +continue +else + # Passes both tests. +ac_preproc_ok=: +break +fi +rm -f conftest.err conftest.i conftest.$ac_ext + +done +# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped. +rm -f conftest.i conftest.err conftest.$ac_ext +if $ac_preproc_ok; then : + +else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "C preprocessor \"$CPP\" fails sanity check +See \`config.log' for more details" "$LINENO" 5; } +fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5 +$as_echo_n "checking for ANSI C header files... " >&6; } +if ${ac_cv_header_stdc+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +#include +#include +#include + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_header_stdc=yes +else + ac_cv_header_stdc=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + +if test $ac_cv_header_stdc = yes; then + # SunOS 4.x string.h does not declare mem*, contrary to ANSI. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + +_ACEOF +if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | + $EGREP "memchr" >/dev/null 2>&1; then : + +else + ac_cv_header_stdc=no +fi +rm -f conftest* + +fi + +if test $ac_cv_header_stdc = yes; then + # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + +_ACEOF +if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | + $EGREP "free" >/dev/null 2>&1; then : + +else + ac_cv_header_stdc=no +fi +rm -f conftest* + +fi + +if test $ac_cv_header_stdc = yes; then + # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi. + if test "$cross_compiling" = yes; then : + : +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +#include +#if ((' ' & 0x0FF) == 0x020) +# define ISLOWER(c) ('a' <= (c) && (c) <= 'z') +# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c)) +#else +# define ISLOWER(c) \ + (('a' <= (c) && (c) <= 'i') \ + || ('j' <= (c) && (c) <= 'r') \ + || ('s' <= (c) && (c) <= 'z')) +# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c)) +#endif + +#define XOR(e, f) (((e) && !(f)) || (!(e) && (f))) +int +main () +{ + int i; + for (i = 0; i < 256; i++) + if (XOR (islower (i), ISLOWER (i)) + || toupper (i) != TOUPPER (i)) + return 2; + return 0; +} +_ACEOF +if ac_fn_c_try_run "$LINENO"; then : + +else + ac_cv_header_stdc=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ + conftest.$ac_objext conftest.beam conftest.$ac_ext +fi + +fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5 +$as_echo "$ac_cv_header_stdc" >&6; } +if test $ac_cv_header_stdc = yes; then + +$as_echo "#define STDC_HEADERS 1" >>confdefs.h + +fi + +# On IRIX 5.3, sys/types and inttypes.h are conflicting. +for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \ + inttypes.h stdint.h unistd.h +do : + as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` +ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default +" +if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 +_ACEOF + +fi + +done + + +for ac_header in dlfcn.h +do : + ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default +" +if test "x$ac_cv_header_dlfcn_h" = xyes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_DLFCN_H 1 +_ACEOF + +fi + +done + + + + +func_stripname_cnf () +{ + case $2 in + .*) func_stripname_result=`$ECHO "$3" | $SED "s%^$1%%; s%\\\\$2\$%%"`;; + *) func_stripname_result=`$ECHO "$3" | $SED "s%^$1%%; s%$2\$%%"`;; + esac +} # func_stripname_cnf + + + + + +# Set options + + + + enable_dlopen=no + + + enable_win32_dll=no + + + # Check whether --enable-shared was given. +if test "${enable_shared+set}" = set; then : + enableval=$enable_shared; p=${PACKAGE-default} + case $enableval in + yes) enable_shared=yes ;; + no) enable_shared=no ;; + *) + enable_shared=no + # Look at the argument we got. We use all the common list separators. + lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, + for pkg in $enableval; do + IFS=$lt_save_ifs + if test "X$pkg" = "X$p"; then + enable_shared=yes + fi + done + IFS=$lt_save_ifs + ;; + esac +else + enable_shared=yes +fi + + + + + + + + + + # Check whether --enable-static was given. +if test "${enable_static+set}" = set; then : + enableval=$enable_static; p=${PACKAGE-default} + case $enableval in + yes) enable_static=yes ;; + no) enable_static=no ;; + *) + enable_static=no + # Look at the argument we got. We use all the common list separators. + lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, + for pkg in $enableval; do + IFS=$lt_save_ifs + if test "X$pkg" = "X$p"; then + enable_static=yes + fi + done + IFS=$lt_save_ifs + ;; + esac +else + enable_static=yes +fi + + + + + + + + + + +# Check whether --with-pic was given. +if test "${with_pic+set}" = set; then : + withval=$with_pic; lt_p=${PACKAGE-default} + case $withval in + yes|no) pic_mode=$withval ;; + *) + pic_mode=default + # Look at the argument we got. We use all the common list separators. + lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, + for lt_pkg in $withval; do + IFS=$lt_save_ifs + if test "X$lt_pkg" = "X$lt_p"; then + pic_mode=yes + fi + done + IFS=$lt_save_ifs + ;; + esac +else + pic_mode=default +fi + + + + + + + + + # Check whether --enable-fast-install was given. +if test "${enable_fast_install+set}" = set; then : + enableval=$enable_fast_install; p=${PACKAGE-default} + case $enableval in + yes) enable_fast_install=yes ;; + no) enable_fast_install=no ;; + *) + enable_fast_install=no + # Look at the argument we got. We use all the common list separators. + lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, + for pkg in $enableval; do + IFS=$lt_save_ifs + if test "X$pkg" = "X$p"; then + enable_fast_install=yes + fi + done + IFS=$lt_save_ifs + ;; + esac +else + enable_fast_install=yes +fi + + + + + + + + + shared_archive_member_spec= +case $host,$enable_shared in +power*-*-aix[5-9]*,yes) + { $as_echo "$as_me:${as_lineno-$LINENO}: checking which variant of shared library versioning to provide" >&5 +$as_echo_n "checking which variant of shared library versioning to provide... " >&6; } + +# Check whether --with-aix-soname was given. +if test "${with_aix_soname+set}" = set; then : + withval=$with_aix_soname; case $withval in + aix|svr4|both) + ;; + *) + as_fn_error $? "Unknown argument to --with-aix-soname" "$LINENO" 5 + ;; + esac + lt_cv_with_aix_soname=$with_aix_soname +else + if ${lt_cv_with_aix_soname+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_with_aix_soname=aix +fi + + with_aix_soname=$lt_cv_with_aix_soname +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_aix_soname" >&5 +$as_echo "$with_aix_soname" >&6; } + if test aix != "$with_aix_soname"; then + # For the AIX way of multilib, we name the shared archive member + # based on the bitwidth used, traditionally 'shr.o' or 'shr_64.o', + # and 'shr.imp' or 'shr_64.imp', respectively, for the Import File. + # Even when GNU compilers ignore OBJECT_MODE but need '-maix64' flag, + # the AIX toolchain works better with OBJECT_MODE set (default 32). + if test 64 = "${OBJECT_MODE-32}"; then + shared_archive_member_spec=shr_64 + else + shared_archive_member_spec=shr + fi + fi + ;; +*) + with_aix_soname=aix + ;; +esac + + + + + + + + + + +# This can be used to rebuild libtool when needed +LIBTOOL_DEPS=$ltmain + +# Always use our own libtool. +LIBTOOL='$(SHELL) $(top_builddir)/libtool' + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +test -z "$LN_S" && LN_S="ln -s" + + + + + + + + + + + + + + +if test -n "${ZSH_VERSION+set}"; then + setopt NO_GLOB_SUBST +fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for objdir" >&5 +$as_echo_n "checking for objdir... " >&6; } +if ${lt_cv_objdir+:} false; then : + $as_echo_n "(cached) " >&6 +else + rm -f .libs 2>/dev/null +mkdir .libs 2>/dev/null +if test -d .libs; then + lt_cv_objdir=.libs +else + # MS-DOS does not allow filenames that begin with a dot. + lt_cv_objdir=_libs +fi +rmdir .libs 2>/dev/null +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_objdir" >&5 +$as_echo "$lt_cv_objdir" >&6; } +objdir=$lt_cv_objdir + + + + + +cat >>confdefs.h <<_ACEOF +#define LT_OBJDIR "$lt_cv_objdir/" +_ACEOF + + + + +case $host_os in +aix3*) + # AIX sometimes has problems with the GCC collect2 program. For some + # reason, if we set the COLLECT_NAMES environment variable, the problems + # vanish in a puff of smoke. + if test set != "${COLLECT_NAMES+set}"; then + COLLECT_NAMES= + export COLLECT_NAMES + fi + ;; +esac + +# Global variables: +ofile=libtool +can_build_shared=yes + +# All known linkers require a '.a' archive for static linking (except MSVC, +# which needs '.lib'). +libext=a + +with_gnu_ld=$lt_cv_prog_gnu_ld + +old_CC=$CC +old_CFLAGS=$CFLAGS + +# Set sane defaults for various variables +test -z "$CC" && CC=cc +test -z "$LTCC" && LTCC=$CC +test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS +test -z "$LD" && LD=ld +test -z "$ac_objext" && ac_objext=o + +func_cc_basename $compiler +cc_basename=$func_cc_basename_result + + +# Only perform the check for file, if the check method requires it +test -z "$MAGIC_CMD" && MAGIC_CMD=file +case $deplibs_check_method in +file_magic*) + if test "$file_magic_cmd" = '$MAGIC_CMD'; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${ac_tool_prefix}file" >&5 +$as_echo_n "checking for ${ac_tool_prefix}file... " >&6; } +if ${lt_cv_path_MAGIC_CMD+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $MAGIC_CMD in +[\\/*] | ?:[\\/]*) + lt_cv_path_MAGIC_CMD=$MAGIC_CMD # Let the user override the test with a path. + ;; +*) + lt_save_MAGIC_CMD=$MAGIC_CMD + lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR + ac_dummy="/usr/bin$PATH_SEPARATOR$PATH" + for ac_dir in $ac_dummy; do + IFS=$lt_save_ifs + test -z "$ac_dir" && ac_dir=. + if test -f "$ac_dir/${ac_tool_prefix}file"; then + lt_cv_path_MAGIC_CMD=$ac_dir/"${ac_tool_prefix}file" + if test -n "$file_magic_test_file"; then + case $deplibs_check_method in + "file_magic "*) + file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"` + MAGIC_CMD=$lt_cv_path_MAGIC_CMD + if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null | + $EGREP "$file_magic_regex" > /dev/null; then + : + else + cat <<_LT_EOF 1>&2 + +*** Warning: the command libtool uses to detect shared libraries, +*** $file_magic_cmd, produces output that libtool cannot recognize. +*** The result is that libtool may fail to recognize shared libraries +*** as such. This will affect the creation of libtool libraries that +*** depend on shared libraries, but programs linked with such libtool +*** libraries will work regardless of this problem. Nevertheless, you +*** may want to report the problem to your system manager and/or to +*** bug-libtool@gnu.org + +_LT_EOF + fi ;; + esac + fi + break + fi + done + IFS=$lt_save_ifs + MAGIC_CMD=$lt_save_MAGIC_CMD + ;; +esac +fi + +MAGIC_CMD=$lt_cv_path_MAGIC_CMD +if test -n "$MAGIC_CMD"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5 +$as_echo "$MAGIC_CMD" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + + + +if test -z "$lt_cv_path_MAGIC_CMD"; then + if test -n "$ac_tool_prefix"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for file" >&5 +$as_echo_n "checking for file... " >&6; } +if ${lt_cv_path_MAGIC_CMD+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $MAGIC_CMD in +[\\/*] | ?:[\\/]*) + lt_cv_path_MAGIC_CMD=$MAGIC_CMD # Let the user override the test with a path. + ;; +*) + lt_save_MAGIC_CMD=$MAGIC_CMD + lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR + ac_dummy="/usr/bin$PATH_SEPARATOR$PATH" + for ac_dir in $ac_dummy; do + IFS=$lt_save_ifs + test -z "$ac_dir" && ac_dir=. + if test -f "$ac_dir/file"; then + lt_cv_path_MAGIC_CMD=$ac_dir/"file" + if test -n "$file_magic_test_file"; then + case $deplibs_check_method in + "file_magic "*) + file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"` + MAGIC_CMD=$lt_cv_path_MAGIC_CMD + if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null | + $EGREP "$file_magic_regex" > /dev/null; then + : + else + cat <<_LT_EOF 1>&2 + +*** Warning: the command libtool uses to detect shared libraries, +*** $file_magic_cmd, produces output that libtool cannot recognize. +*** The result is that libtool may fail to recognize shared libraries +*** as such. This will affect the creation of libtool libraries that +*** depend on shared libraries, but programs linked with such libtool +*** libraries will work regardless of this problem. Nevertheless, you +*** may want to report the problem to your system manager and/or to +*** bug-libtool@gnu.org + +_LT_EOF + fi ;; + esac + fi + break + fi + done + IFS=$lt_save_ifs + MAGIC_CMD=$lt_save_MAGIC_CMD + ;; +esac +fi + +MAGIC_CMD=$lt_cv_path_MAGIC_CMD +if test -n "$MAGIC_CMD"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5 +$as_echo "$MAGIC_CMD" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + else + MAGIC_CMD=: + fi +fi + + fi + ;; +esac + +# Use C for the default configuration in the libtool script + +lt_save_CC=$CC +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + +# Source file extension for C test sources. +ac_ext=c + +# Object file extension for compiled C test sources. +objext=o +objext=$objext + +# Code to be used in simple compile tests +lt_simple_compile_test_code="int some_variable = 0;" + +# Code to be used in simple link tests +lt_simple_link_test_code='int main(){return(0);}' + + + + + + + +# If no C compiler was specified, use CC. +LTCC=${LTCC-"$CC"} + +# If no C compiler flags were specified, use CFLAGS. +LTCFLAGS=${LTCFLAGS-"$CFLAGS"} + +# Allow CC to be a program name with arguments. +compiler=$CC + +# Save the default compiler, since it gets overwritten when the other +# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP. +compiler_DEFAULT=$CC + +# save warnings/boilerplate of simple test code +ac_outfile=conftest.$ac_objext +echo "$lt_simple_compile_test_code" >conftest.$ac_ext +eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err +_lt_compiler_boilerplate=`cat conftest.err` +$RM conftest* + +ac_outfile=conftest.$ac_objext +echo "$lt_simple_link_test_code" >conftest.$ac_ext +eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err +_lt_linker_boilerplate=`cat conftest.err` +$RM -r conftest* + + +## CAVEAT EMPTOR: +## There is no encapsulation within the following macros, do not change +## the running order or otherwise move them around unless you know exactly +## what you are doing... +if test -n "$compiler"; then + +lt_prog_compiler_no_builtin_flag= + +if test yes = "$GCC"; then + case $cc_basename in + nvcc*) + lt_prog_compiler_no_builtin_flag=' -Xcompiler -fno-builtin' ;; + *) + lt_prog_compiler_no_builtin_flag=' -fno-builtin' ;; + esac + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -fno-rtti -fno-exceptions" >&5 +$as_echo_n "checking if $compiler supports -fno-rtti -fno-exceptions... " >&6; } +if ${lt_cv_prog_compiler_rtti_exceptions+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_prog_compiler_rtti_exceptions=no + ac_outfile=conftest.$ac_objext + echo "$lt_simple_compile_test_code" > conftest.$ac_ext + lt_compiler_flag="-fno-rtti -fno-exceptions" ## exclude from sc_useless_quotes_in_assignment + # Insert the option either (1) after the last *FLAGS variable, or + # (2) before a word containing "conftest.", or (3) at the end. + # Note that $ac_compile itself does not contain backslashes and begins + # with a dollar sign (not a hyphen), so the echo should work correctly. + # The option is referenced via a variable to avoid confusing sed. + lt_compile=`echo "$ac_compile" | $SED \ + -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ + -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \ + -e 's:$: $lt_compiler_flag:'` + (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5) + (eval "$lt_compile" 2>conftest.err) + ac_status=$? + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + if (exit $ac_status) && test -s "$ac_outfile"; then + # The compiler can only warn and ignore the option if not recognized + # So say no if there are warnings other than the usual output. + $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp + $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 + if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then + lt_cv_prog_compiler_rtti_exceptions=yes + fi + fi + $RM conftest* + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_rtti_exceptions" >&5 +$as_echo "$lt_cv_prog_compiler_rtti_exceptions" >&6; } + +if test yes = "$lt_cv_prog_compiler_rtti_exceptions"; then + lt_prog_compiler_no_builtin_flag="$lt_prog_compiler_no_builtin_flag -fno-rtti -fno-exceptions" +else + : +fi + +fi + + + + + + + lt_prog_compiler_wl= +lt_prog_compiler_pic= +lt_prog_compiler_static= + + + if test yes = "$GCC"; then + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_static='-static' + + case $host_os in + aix*) + # All AIX code is PIC. + if test ia64 = "$host_cpu"; then + # AIX 5 now supports IA64 processor + lt_prog_compiler_static='-Bstatic' + fi + lt_prog_compiler_pic='-fPIC' + ;; + + amigaos*) + case $host_cpu in + powerpc) + # see comment about AmigaOS4 .so support + lt_prog_compiler_pic='-fPIC' + ;; + m68k) + # FIXME: we need at least 68020 code to build shared libraries, but + # adding the '-m68020' flag to GCC prevents building anything better, + # like '-m68040'. + lt_prog_compiler_pic='-m68020 -resident32 -malways-restore-a4' + ;; + esac + ;; + + beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*) + # PIC is the default for these OSes. + ;; + + mingw* | cygwin* | pw32* | os2* | cegcc*) + # This hack is so that the source file can tell whether it is being + # built for inclusion in a dll (and should export symbols for example). + # Although the cygwin gcc ignores -fPIC, still need this for old-style + # (--disable-auto-import) libraries + lt_prog_compiler_pic='-DDLL_EXPORT' + case $host_os in + os2*) + lt_prog_compiler_static='$wl-static' + ;; + esac + ;; + + darwin* | rhapsody*) + # PIC is the default on this platform + # Common symbols not allowed in MH_DYLIB files + lt_prog_compiler_pic='-fno-common' + ;; + + haiku*) + # PIC is the default for Haiku. + # The "-static" flag exists, but is broken. + lt_prog_compiler_static= + ;; + + hpux*) + # PIC is the default for 64-bit PA HP-UX, but not for 32-bit + # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag + # sets the default TLS model and affects inlining. + case $host_cpu in + hppa*64*) + # +Z the default + ;; + *) + lt_prog_compiler_pic='-fPIC' + ;; + esac + ;; + + interix[3-9]*) + # Interix 3.x gcc -fpic/-fPIC options generate broken code. + # Instead, we relocate shared libraries at runtime. + ;; + + msdosdjgpp*) + # Just because we use GCC doesn't mean we suddenly get shared libraries + # on systems that don't support them. + lt_prog_compiler_can_build_shared=no + enable_shared=no + ;; + + *nto* | *qnx*) + # QNX uses GNU C++, but need to define -shared option too, otherwise + # it will coredump. + lt_prog_compiler_pic='-fPIC -shared' + ;; + + sysv4*MP*) + if test -d /usr/nec; then + lt_prog_compiler_pic=-Kconform_pic + fi + ;; + + *) + lt_prog_compiler_pic='-fPIC' + ;; + esac + + case $cc_basename in + nvcc*) # Cuda Compiler Driver 2.2 + lt_prog_compiler_wl='-Xlinker ' + if test -n "$lt_prog_compiler_pic"; then + lt_prog_compiler_pic="-Xcompiler $lt_prog_compiler_pic" + fi + ;; + esac + else + # PORTME Check for flag to pass linker flags through the system compiler. + case $host_os in + aix*) + lt_prog_compiler_wl='-Wl,' + if test ia64 = "$host_cpu"; then + # AIX 5 now supports IA64 processor + lt_prog_compiler_static='-Bstatic' + else + lt_prog_compiler_static='-bnso -bI:/lib/syscalls.exp' + fi + ;; + + darwin* | rhapsody*) + # PIC is the default on this platform + # Common symbols not allowed in MH_DYLIB files + lt_prog_compiler_pic='-fno-common' + case $cc_basename in + nagfor*) + # NAG Fortran compiler + lt_prog_compiler_wl='-Wl,-Wl,,' + lt_prog_compiler_pic='-PIC' + lt_prog_compiler_static='-Bstatic' + ;; + esac + ;; + + mingw* | cygwin* | pw32* | os2* | cegcc*) + # This hack is so that the source file can tell whether it is being + # built for inclusion in a dll (and should export symbols for example). + lt_prog_compiler_pic='-DDLL_EXPORT' + case $host_os in + os2*) + lt_prog_compiler_static='$wl-static' + ;; + esac + ;; + + hpux9* | hpux10* | hpux11*) + lt_prog_compiler_wl='-Wl,' + # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but + # not for PA HP-UX. + case $host_cpu in + hppa*64*|ia64*) + # +Z the default + ;; + *) + lt_prog_compiler_pic='+Z' + ;; + esac + # Is there a better lt_prog_compiler_static that works with the bundled CC? + lt_prog_compiler_static='$wl-a ${wl}archive' + ;; + + irix5* | irix6* | nonstopux*) + lt_prog_compiler_wl='-Wl,' + # PIC (with -KPIC) is the default. + lt_prog_compiler_static='-non_shared' + ;; + + linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) + case $cc_basename in + # old Intel for x86_64, which still supported -KPIC. + ecc*) + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_pic='-KPIC' + lt_prog_compiler_static='-static' + ;; + # icc used to be incompatible with GCC. + # ICC 10 doesn't accept -KPIC any more. + icc* | ifort*) + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_pic='-fPIC' + lt_prog_compiler_static='-static' + ;; + # Lahey Fortran 8.1. + lf95*) + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_pic='--shared' + lt_prog_compiler_static='--static' + ;; + nagfor*) + # NAG Fortran compiler + lt_prog_compiler_wl='-Wl,-Wl,,' + lt_prog_compiler_pic='-PIC' + lt_prog_compiler_static='-Bstatic' + ;; + tcc*) + # Fabrice Bellard et al's Tiny C Compiler + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_pic='-fPIC' + lt_prog_compiler_static='-static' + ;; + pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*) + # Portland Group compilers (*not* the Pentium gcc compiler, + # which looks to be a dead project) + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_pic='-fpic' + lt_prog_compiler_static='-Bstatic' + ;; + ccc*) + lt_prog_compiler_wl='-Wl,' + # All Alpha code is PIC. + lt_prog_compiler_static='-non_shared' + ;; + xl* | bgxl* | bgf* | mpixl*) + # IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_pic='-qpic' + lt_prog_compiler_static='-qstaticlink' + ;; + *) + case `$CC -V 2>&1 | sed 5q` in + *Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [1-7].* | *Sun*Fortran*\ 8.[0-3]*) + # Sun Fortran 8.3 passes all unrecognized flags to the linker + lt_prog_compiler_pic='-KPIC' + lt_prog_compiler_static='-Bstatic' + lt_prog_compiler_wl='' + ;; + *Sun\ F* | *Sun*Fortran*) + lt_prog_compiler_pic='-KPIC' + lt_prog_compiler_static='-Bstatic' + lt_prog_compiler_wl='-Qoption ld ' + ;; + *Sun\ C*) + # Sun C 5.9 + lt_prog_compiler_pic='-KPIC' + lt_prog_compiler_static='-Bstatic' + lt_prog_compiler_wl='-Wl,' + ;; + *Intel*\ [CF]*Compiler*) + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_pic='-fPIC' + lt_prog_compiler_static='-static' + ;; + *Portland\ Group*) + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_pic='-fpic' + lt_prog_compiler_static='-Bstatic' + ;; + esac + ;; + esac + ;; + + newsos6) + lt_prog_compiler_pic='-KPIC' + lt_prog_compiler_static='-Bstatic' + ;; + + *nto* | *qnx*) + # QNX uses GNU C++, but need to define -shared option too, otherwise + # it will coredump. + lt_prog_compiler_pic='-fPIC -shared' + ;; + + osf3* | osf4* | osf5*) + lt_prog_compiler_wl='-Wl,' + # All OSF/1 code is PIC. + lt_prog_compiler_static='-non_shared' + ;; + + rdos*) + lt_prog_compiler_static='-non_shared' + ;; + + solaris*) + lt_prog_compiler_pic='-KPIC' + lt_prog_compiler_static='-Bstatic' + case $cc_basename in + f77* | f90* | f95* | sunf77* | sunf90* | sunf95*) + lt_prog_compiler_wl='-Qoption ld ';; + *) + lt_prog_compiler_wl='-Wl,';; + esac + ;; + + sunos4*) + lt_prog_compiler_wl='-Qoption ld ' + lt_prog_compiler_pic='-PIC' + lt_prog_compiler_static='-Bstatic' + ;; + + sysv4 | sysv4.2uw2* | sysv4.3*) + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_pic='-KPIC' + lt_prog_compiler_static='-Bstatic' + ;; + + sysv4*MP*) + if test -d /usr/nec; then + lt_prog_compiler_pic='-Kconform_pic' + lt_prog_compiler_static='-Bstatic' + fi + ;; + + sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*) + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_pic='-KPIC' + lt_prog_compiler_static='-Bstatic' + ;; + + unicos*) + lt_prog_compiler_wl='-Wl,' + lt_prog_compiler_can_build_shared=no + ;; + + uts4*) + lt_prog_compiler_pic='-pic' + lt_prog_compiler_static='-Bstatic' + ;; + + *) + lt_prog_compiler_can_build_shared=no + ;; + esac + fi + +case $host_os in + # For platforms that do not support PIC, -DPIC is meaningless: + *djgpp*) + lt_prog_compiler_pic= + ;; + *) + lt_prog_compiler_pic="$lt_prog_compiler_pic -DPIC" + ;; +esac + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5 +$as_echo_n "checking for $compiler option to produce PIC... " >&6; } +if ${lt_cv_prog_compiler_pic+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_prog_compiler_pic=$lt_prog_compiler_pic +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic" >&5 +$as_echo "$lt_cv_prog_compiler_pic" >&6; } +lt_prog_compiler_pic=$lt_cv_prog_compiler_pic + +# +# Check to make sure the PIC flag actually works. +# +if test -n "$lt_prog_compiler_pic"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler PIC flag $lt_prog_compiler_pic works" >&5 +$as_echo_n "checking if $compiler PIC flag $lt_prog_compiler_pic works... " >&6; } +if ${lt_cv_prog_compiler_pic_works+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_prog_compiler_pic_works=no + ac_outfile=conftest.$ac_objext + echo "$lt_simple_compile_test_code" > conftest.$ac_ext + lt_compiler_flag="$lt_prog_compiler_pic -DPIC" ## exclude from sc_useless_quotes_in_assignment + # Insert the option either (1) after the last *FLAGS variable, or + # (2) before a word containing "conftest.", or (3) at the end. + # Note that $ac_compile itself does not contain backslashes and begins + # with a dollar sign (not a hyphen), so the echo should work correctly. + # The option is referenced via a variable to avoid confusing sed. + lt_compile=`echo "$ac_compile" | $SED \ + -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ + -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \ + -e 's:$: $lt_compiler_flag:'` + (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5) + (eval "$lt_compile" 2>conftest.err) + ac_status=$? + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + if (exit $ac_status) && test -s "$ac_outfile"; then + # The compiler can only warn and ignore the option if not recognized + # So say no if there are warnings other than the usual output. + $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp + $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 + if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then + lt_cv_prog_compiler_pic_works=yes + fi + fi + $RM conftest* + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic_works" >&5 +$as_echo "$lt_cv_prog_compiler_pic_works" >&6; } + +if test yes = "$lt_cv_prog_compiler_pic_works"; then + case $lt_prog_compiler_pic in + "" | " "*) ;; + *) lt_prog_compiler_pic=" $lt_prog_compiler_pic" ;; + esac +else + lt_prog_compiler_pic= + lt_prog_compiler_can_build_shared=no +fi + +fi + + + + + + + + + + + +# +# Check to make sure the static flag actually works. +# +wl=$lt_prog_compiler_wl eval lt_tmp_static_flag=\"$lt_prog_compiler_static\" +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler static flag $lt_tmp_static_flag works" >&5 +$as_echo_n "checking if $compiler static flag $lt_tmp_static_flag works... " >&6; } +if ${lt_cv_prog_compiler_static_works+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_prog_compiler_static_works=no + save_LDFLAGS=$LDFLAGS + LDFLAGS="$LDFLAGS $lt_tmp_static_flag" + echo "$lt_simple_link_test_code" > conftest.$ac_ext + if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then + # The linker can only warn and ignore the option if not recognized + # So say no if there are warnings + if test -s conftest.err; then + # Append any errors to the config.log. + cat conftest.err 1>&5 + $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp + $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 + if diff conftest.exp conftest.er2 >/dev/null; then + lt_cv_prog_compiler_static_works=yes + fi + else + lt_cv_prog_compiler_static_works=yes + fi + fi + $RM -r conftest* + LDFLAGS=$save_LDFLAGS + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_static_works" >&5 +$as_echo "$lt_cv_prog_compiler_static_works" >&6; } + +if test yes = "$lt_cv_prog_compiler_static_works"; then + : +else + lt_prog_compiler_static= +fi + + + + + + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5 +$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; } +if ${lt_cv_prog_compiler_c_o+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_prog_compiler_c_o=no + $RM -r conftest 2>/dev/null + mkdir conftest + cd conftest + mkdir out + echo "$lt_simple_compile_test_code" > conftest.$ac_ext + + lt_compiler_flag="-o out/conftest2.$ac_objext" + # Insert the option either (1) after the last *FLAGS variable, or + # (2) before a word containing "conftest.", or (3) at the end. + # Note that $ac_compile itself does not contain backslashes and begins + # with a dollar sign (not a hyphen), so the echo should work correctly. + lt_compile=`echo "$ac_compile" | $SED \ + -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ + -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \ + -e 's:$: $lt_compiler_flag:'` + (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5) + (eval "$lt_compile" 2>out/conftest.err) + ac_status=$? + cat out/conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + if (exit $ac_status) && test -s out/conftest2.$ac_objext + then + # The compiler can only warn and ignore the option if not recognized + # So say no if there are warnings + $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp + $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2 + if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then + lt_cv_prog_compiler_c_o=yes + fi + fi + chmod u+w . 2>&5 + $RM conftest* + # SGI C++ compiler will create directory out/ii_files/ for + # template instantiation + test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files + $RM out/* && rmdir out + cd .. + $RM -r conftest + $RM conftest* + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5 +$as_echo "$lt_cv_prog_compiler_c_o" >&6; } + + + + + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5 +$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; } +if ${lt_cv_prog_compiler_c_o+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_prog_compiler_c_o=no + $RM -r conftest 2>/dev/null + mkdir conftest + cd conftest + mkdir out + echo "$lt_simple_compile_test_code" > conftest.$ac_ext + + lt_compiler_flag="-o out/conftest2.$ac_objext" + # Insert the option either (1) after the last *FLAGS variable, or + # (2) before a word containing "conftest.", or (3) at the end. + # Note that $ac_compile itself does not contain backslashes and begins + # with a dollar sign (not a hyphen), so the echo should work correctly. + lt_compile=`echo "$ac_compile" | $SED \ + -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ + -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \ + -e 's:$: $lt_compiler_flag:'` + (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5) + (eval "$lt_compile" 2>out/conftest.err) + ac_status=$? + cat out/conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + if (exit $ac_status) && test -s out/conftest2.$ac_objext + then + # The compiler can only warn and ignore the option if not recognized + # So say no if there are warnings + $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp + $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2 + if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then + lt_cv_prog_compiler_c_o=yes + fi + fi + chmod u+w . 2>&5 + $RM conftest* + # SGI C++ compiler will create directory out/ii_files/ for + # template instantiation + test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files + $RM out/* && rmdir out + cd .. + $RM -r conftest + $RM conftest* + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5 +$as_echo "$lt_cv_prog_compiler_c_o" >&6; } + + + + +hard_links=nottested +if test no = "$lt_cv_prog_compiler_c_o" && test no != "$need_locks"; then + # do not overwrite the value of need_locks provided by the user + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can lock with hard links" >&5 +$as_echo_n "checking if we can lock with hard links... " >&6; } + hard_links=yes + $RM conftest* + ln conftest.a conftest.b 2>/dev/null && hard_links=no + touch conftest.a + ln conftest.a conftest.b 2>&5 || hard_links=no + ln conftest.a conftest.b 2>/dev/null && hard_links=no + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $hard_links" >&5 +$as_echo "$hard_links" >&6; } + if test no = "$hard_links"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: '$CC' does not support '-c -o', so 'make -j' may be unsafe" >&5 +$as_echo "$as_me: WARNING: '$CC' does not support '-c -o', so 'make -j' may be unsafe" >&2;} + need_locks=warn + fi +else + need_locks=no +fi + + + + + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $compiler linker ($LD) supports shared libraries" >&5 +$as_echo_n "checking whether the $compiler linker ($LD) supports shared libraries... " >&6; } + + runpath_var= + allow_undefined_flag= + always_export_symbols=no + archive_cmds= + archive_expsym_cmds= + compiler_needs_object=no + enable_shared_with_static_runtimes=no + export_dynamic_flag_spec= + export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols' + hardcode_automatic=no + hardcode_direct=no + hardcode_direct_absolute=no + hardcode_libdir_flag_spec= + hardcode_libdir_separator= + hardcode_minus_L=no + hardcode_shlibpath_var=unsupported + inherit_rpath=no + link_all_deplibs=unknown + module_cmds= + module_expsym_cmds= + old_archive_from_new_cmds= + old_archive_from_expsyms_cmds= + thread_safe_flag_spec= + whole_archive_flag_spec= + # include_expsyms should be a list of space-separated symbols to be *always* + # included in the symbol list + include_expsyms= + # exclude_expsyms can be an extended regexp of symbols to exclude + # it will be wrapped by ' (' and ')$', so one must not match beginning or + # end of line. Example: 'a|bc|.*d.*' will exclude the symbols 'a' and 'bc', + # as well as any symbol that contains 'd'. + exclude_expsyms='_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*' + # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out + # platforms (ab)use it in PIC code, but their linkers get confused if + # the symbol is explicitly referenced. Since portable code cannot + # rely on this symbol name, it's probably fine to never include it in + # preloaded symbol tables. + # Exclude shared library initialization/finalization symbols. + extract_expsyms_cmds= + + case $host_os in + cygwin* | mingw* | pw32* | cegcc*) + # FIXME: the MSVC++ port hasn't been tested in a loooong time + # When not using gcc, we currently assume that we are using + # Microsoft Visual C++. + if test yes != "$GCC"; then + with_gnu_ld=no + fi + ;; + interix*) + # we just hope/assume this is gcc and not c89 (= MSVC++) + with_gnu_ld=yes + ;; + openbsd* | bitrig*) + with_gnu_ld=no + ;; + esac + + ld_shlibs=yes + + # On some targets, GNU ld is compatible enough with the native linker + # that we're better off using the native interface for both. + lt_use_gnu_ld_interface=no + if test yes = "$with_gnu_ld"; then + case $host_os in + aix*) + # The AIX port of GNU ld has always aspired to compatibility + # with the native linker. However, as the warning in the GNU ld + # block says, versions before 2.19.5* couldn't really create working + # shared libraries, regardless of the interface used. + case `$LD -v 2>&1` in + *\ \(GNU\ Binutils\)\ 2.19.5*) ;; + *\ \(GNU\ Binutils\)\ 2.[2-9]*) ;; + *\ \(GNU\ Binutils\)\ [3-9]*) ;; + *) + lt_use_gnu_ld_interface=yes + ;; + esac + ;; + *) + lt_use_gnu_ld_interface=yes + ;; + esac + fi + + if test yes = "$lt_use_gnu_ld_interface"; then + # If archive_cmds runs LD, not CC, wlarc should be empty + wlarc='$wl' + + # Set some defaults for GNU ld with shared library support. These + # are reset later if shared libraries are not supported. Putting them + # here allows them to be overridden if necessary. + runpath_var=LD_RUN_PATH + hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' + export_dynamic_flag_spec='$wl--export-dynamic' + # ancient GNU ld didn't support --whole-archive et. al. + if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then + whole_archive_flag_spec=$wlarc'--whole-archive$convenience '$wlarc'--no-whole-archive' + else + whole_archive_flag_spec= + fi + supports_anon_versioning=no + case `$LD -v | $SED -e 's/(^)\+)\s\+//' 2>&1` in + *GNU\ gold*) supports_anon_versioning=yes ;; + *\ [01].* | *\ 2.[0-9].* | *\ 2.10.*) ;; # catch versions < 2.11 + *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ... + *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ... + *\ 2.11.*) ;; # other 2.11 versions + *) supports_anon_versioning=yes ;; + esac + + # See if GNU ld supports shared libraries. + case $host_os in + aix[3-9]*) + # On AIX/PPC, the GNU linker is very broken + if test ia64 != "$host_cpu"; then + ld_shlibs=no + cat <<_LT_EOF 1>&2 + +*** Warning: the GNU linker, at least up to release 2.19, is reported +*** to be unable to reliably create shared libraries on AIX. +*** Therefore, libtool is disabling shared libraries support. If you +*** really care for shared libraries, you may want to install binutils +*** 2.20 or above, or modify your PATH so that a non-GNU linker is found. +*** You will then need to restart the configuration process. + +_LT_EOF + fi + ;; + + amigaos*) + case $host_cpu in + powerpc) + # see comment about AmigaOS4 .so support + archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + archive_expsym_cmds='' + ;; + m68k) + archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)' + hardcode_libdir_flag_spec='-L$libdir' + hardcode_minus_L=yes + ;; + esac + ;; + + beos*) + if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then + allow_undefined_flag=unsupported + # Joseph Beckenbach says some releases of gcc + # support --undefined. This deserves some investigation. FIXME + archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + else + ld_shlibs=no + fi + ;; + + cygwin* | mingw* | pw32* | cegcc*) + # _LT_TAGVAR(hardcode_libdir_flag_spec, ) is actually meaningless, + # as there is no search path for DLLs. + hardcode_libdir_flag_spec='-L$libdir' + export_dynamic_flag_spec='$wl--export-all-symbols' + allow_undefined_flag=unsupported + always_export_symbols=no + enable_shared_with_static_runtimes=yes + export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1 DATA/;s/^.*[ ]__nm__\([^ ]*\)[ ][^ ]*/\1 DATA/;/^I[ ]/d;/^[AITW][ ]/s/.* //'\'' | sort | uniq > $export_symbols' + exclude_expsyms='[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname' + + if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then + archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib' + # If the export-symbols file already is a .def file, use it as + # is; otherwise, prepend EXPORTS... + archive_expsym_cmds='if test DEF = "`$SED -n -e '\''s/^[ ]*//'\'' -e '\''/^\(;.*\)*$/d'\'' -e '\''s/^\(EXPORTS\|LIBRARY\)\([ ].*\)*$/DEF/p'\'' -e q $export_symbols`" ; then + cp $export_symbols $output_objdir/$soname.def; + else + echo EXPORTS > $output_objdir/$soname.def; + cat $export_symbols >> $output_objdir/$soname.def; + fi~ + $CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib' + else + ld_shlibs=no + fi + ;; + + haiku*) + archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + link_all_deplibs=yes + ;; + + os2*) + hardcode_libdir_flag_spec='-L$libdir' + hardcode_minus_L=yes + allow_undefined_flag=unsupported + shrext_cmds=.dll + archive_cmds='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ + $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ + $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ + $ECHO EXPORTS >> $output_objdir/$libname.def~ + emxexp $libobjs | $SED /"_DLL_InitTerm"/d >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + archive_expsym_cmds='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ + $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ + $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ + $ECHO EXPORTS >> $output_objdir/$libname.def~ + prefix_cmds="$SED"~ + if test EXPORTS = "`$SED 1q $export_symbols`"; then + prefix_cmds="$prefix_cmds -e 1d"; + fi~ + prefix_cmds="$prefix_cmds -e \"s/^\(.*\)$/_\1/g\""~ + cat $export_symbols | $prefix_cmds >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + old_archive_From_new_cmds='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def' + enable_shared_with_static_runtimes=yes + ;; + + interix[3-9]*) + hardcode_direct=no + hardcode_shlibpath_var=no + hardcode_libdir_flag_spec='$wl-rpath,$libdir' + export_dynamic_flag_spec='$wl-E' + # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc. + # Instead, shared libraries are loaded at an image base (0x10000000 by + # default) and relocated if they conflict, which is a slow very memory + # consuming and fragmenting process. To avoid this, we pick a random, + # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link + # time. Moving up from 0x10000000 also allows more sbrk(2) space. + archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib' + archive_expsym_cmds='sed "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib' + ;; + + gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu) + tmp_diet=no + if test linux-dietlibc = "$host_os"; then + case $cc_basename in + diet\ *) tmp_diet=yes;; # linux-dietlibc with static linking (!diet-dyn) + esac + fi + if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \ + && test no = "$tmp_diet" + then + tmp_addflag=' $pic_flag' + tmp_sharedflag='-shared' + case $cc_basename,$host_cpu in + pgcc*) # Portland Group C compiler + whole_archive_flag_spec='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + tmp_addflag=' $pic_flag' + ;; + pgf77* | pgf90* | pgf95* | pgfortran*) + # Portland Group f77 and f90 compilers + whole_archive_flag_spec='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + tmp_addflag=' $pic_flag -Mnomain' ;; + ecc*,ia64* | icc*,ia64*) # Intel C compiler on ia64 + tmp_addflag=' -i_dynamic' ;; + efc*,ia64* | ifort*,ia64*) # Intel Fortran compiler on ia64 + tmp_addflag=' -i_dynamic -nofor_main' ;; + ifc* | ifort*) # Intel Fortran compiler + tmp_addflag=' -nofor_main' ;; + lf95*) # Lahey Fortran 8.1 + whole_archive_flag_spec= + tmp_sharedflag='--shared' ;; + nagfor*) # NAGFOR 5.3 + tmp_sharedflag='-Wl,-shared' ;; + xl[cC]* | bgxl[cC]* | mpixl[cC]*) # IBM XL C 8.0 on PPC (deal with xlf below) + tmp_sharedflag='-qmkshrobj' + tmp_addflag= ;; + nvcc*) # Cuda Compiler Driver 2.2 + whole_archive_flag_spec='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + compiler_needs_object=yes + ;; + esac + case `$CC -V 2>&1 | sed 5q` in + *Sun\ C*) # Sun C 5.9 + whole_archive_flag_spec='$wl--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + compiler_needs_object=yes + tmp_sharedflag='-G' ;; + *Sun\ F*) # Sun Fortran 8.3 + tmp_sharedflag='-G' ;; + esac + archive_cmds='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + + if test yes = "$supports_anon_versioning"; then + archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~ + cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~ + echo "local: *; };" >> $output_objdir/$libname.ver~ + $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-version-script $wl$output_objdir/$libname.ver -o $lib' + fi + + case $cc_basename in + tcc*) + export_dynamic_flag_spec='-rdynamic' + ;; + xlf* | bgf* | bgxlf* | mpixlf*) + # IBM XL Fortran 10.1 on PPC cannot create shared libs itself + whole_archive_flag_spec='--whole-archive$convenience --no-whole-archive' + hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' + archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib' + if test yes = "$supports_anon_versioning"; then + archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~ + cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~ + echo "local: *; };" >> $output_objdir/$libname.ver~ + $LD -shared $libobjs $deplibs $linker_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib' + fi + ;; + esac + else + ld_shlibs=no + fi + ;; + + netbsd*) + if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then + archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib' + wlarc= + else + archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + fi + ;; + + solaris*) + if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then + ld_shlibs=no + cat <<_LT_EOF 1>&2 + +*** Warning: The releases 2.8.* of the GNU linker cannot reliably +*** create shared libraries on Solaris systems. Therefore, libtool +*** is disabling shared libraries support. We urge you to upgrade GNU +*** binutils to release 2.9.1 or newer. Another option is to modify +*** your PATH or compiler configuration so that the native linker is +*** used, and then restart. + +_LT_EOF + elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then + archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + else + ld_shlibs=no + fi + ;; + + sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*) + case `$LD -v 2>&1` in + *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*) + ld_shlibs=no + cat <<_LT_EOF 1>&2 + +*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 cannot +*** reliably create shared libraries on SCO systems. Therefore, libtool +*** is disabling shared libraries support. We urge you to upgrade GNU +*** binutils to release 2.16.91.0.3 or newer. Another option is to modify +*** your PATH or compiler configuration so that the native linker is +*** used, and then restart. + +_LT_EOF + ;; + *) + # For security reasons, it is highly recommended that you always + # use absolute paths for naming shared libraries, and exclude the + # DT_RUNPATH tag from executables and libraries. But doing so + # requires that you compile everything twice, which is a pain. + if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then + hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' + archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + else + ld_shlibs=no + fi + ;; + esac + ;; + + sunos4*) + archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags' + wlarc= + hardcode_direct=yes + hardcode_shlibpath_var=no + ;; + + *) + if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then + archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + else + ld_shlibs=no + fi + ;; + esac + + if test no = "$ld_shlibs"; then + runpath_var= + hardcode_libdir_flag_spec= + export_dynamic_flag_spec= + whole_archive_flag_spec= + fi + else + # PORTME fill in a description of your system's linker (not GNU ld) + case $host_os in + aix3*) + allow_undefined_flag=unsupported + always_export_symbols=yes + archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname' + # Note: this linker hardcodes the directories in LIBPATH if there + # are no directories specified by -L. + hardcode_minus_L=yes + if test yes = "$GCC" && test -z "$lt_prog_compiler_static"; then + # Neither direct hardcoding nor static linking is supported with a + # broken collect2. + hardcode_direct=unsupported + fi + ;; + + aix[4-9]*) + if test ia64 = "$host_cpu"; then + # On IA64, the linker does run time linking by default, so we don't + # have to do anything special. + aix_use_runtimelinking=no + exp_sym_flag='-Bexport' + no_entry_flag= + else + # If we're using GNU nm, then we don't want the "-C" option. + # -C means demangle to GNU nm, but means don't demangle to AIX nm. + # Without the "-l" option, or with the "-B" option, AIX nm treats + # weak defined symbols like other global defined symbols, whereas + # GNU nm marks them as "W". + # While the 'weak' keyword is ignored in the Export File, we need + # it in the Import File for the 'aix-soname' feature, so we have + # to replace the "-B" option with "-P" for AIX nm. + if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then + export_symbols_cmds='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && (substr(\$ 3,1,1) != ".")) { if (\$ 2 == "W") { print \$ 3 " weak" } else { print \$ 3 } } }'\'' | sort -u > $export_symbols' + else + export_symbols_cmds='`func_echo_all $NM | $SED -e '\''s/B\([^B]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && (substr(\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols' + fi + aix_use_runtimelinking=no + + # Test if we are trying to use run time linking or normal + # AIX style linking. If -brtl is somewhere in LDFLAGS, we + # have runtime linking enabled, and use it for executables. + # For shared libraries, we enable/disable runtime linking + # depending on the kind of the shared library created - + # when "with_aix_soname,aix_use_runtimelinking" is: + # "aix,no" lib.a(lib.so.V) shared, rtl:no, for executables + # "aix,yes" lib.so shared, rtl:yes, for executables + # lib.a static archive + # "both,no" lib.so.V(shr.o) shared, rtl:yes + # lib.a(lib.so.V) shared, rtl:no, for executables + # "both,yes" lib.so.V(shr.o) shared, rtl:yes, for executables + # lib.a(lib.so.V) shared, rtl:no + # "svr4,*" lib.so.V(shr.o) shared, rtl:yes, for executables + # lib.a static archive + case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*) + for ld_flag in $LDFLAGS; do + if (test x-brtl = "x$ld_flag" || test x-Wl,-brtl = "x$ld_flag"); then + aix_use_runtimelinking=yes + break + fi + done + if test svr4,no = "$with_aix_soname,$aix_use_runtimelinking"; then + # With aix-soname=svr4, we create the lib.so.V shared archives only, + # so we don't have lib.a shared libs to link our executables. + # We have to force runtime linking in this case. + aix_use_runtimelinking=yes + LDFLAGS="$LDFLAGS -Wl,-brtl" + fi + ;; + esac + + exp_sym_flag='-bexport' + no_entry_flag='-bnoentry' + fi + + # When large executables or shared objects are built, AIX ld can + # have problems creating the table of contents. If linking a library + # or program results in "error TOC overflow" add -mminimal-toc to + # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not + # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS. + + archive_cmds='' + hardcode_direct=yes + hardcode_direct_absolute=yes + hardcode_libdir_separator=':' + link_all_deplibs=yes + file_list_spec='$wl-f,' + case $with_aix_soname,$aix_use_runtimelinking in + aix,*) ;; # traditional, no import file + svr4,* | *,yes) # use import file + # The Import File defines what to hardcode. + hardcode_direct=no + hardcode_direct_absolute=no + ;; + esac + + if test yes = "$GCC"; then + case $host_os in aix4.[012]|aix4.[012].*) + # We only want to do this on AIX 4.2 and lower, the check + # below for broken collect2 doesn't work under 4.3+ + collect2name=`$CC -print-prog-name=collect2` + if test -f "$collect2name" && + strings "$collect2name" | $GREP resolve_lib_name >/dev/null + then + # We have reworked collect2 + : + else + # We have old collect2 + hardcode_direct=unsupported + # It fails to find uninstalled libraries when the uninstalled + # path is not listed in the libpath. Setting hardcode_minus_L + # to unsupported forces relinking + hardcode_minus_L=yes + hardcode_libdir_flag_spec='-L$libdir' + hardcode_libdir_separator= + fi + ;; + esac + shared_flag='-shared' + if test yes = "$aix_use_runtimelinking"; then + shared_flag="$shared_flag "'$wl-G' + fi + # Need to ensure runtime linking is disabled for the traditional + # shared library, or the linker may eventually find shared libraries + # /with/ Import File - we do not want to mix them. + shared_flag_aix='-shared' + shared_flag_svr4='-shared $wl-G' + else + # not using gcc + if test ia64 = "$host_cpu"; then + # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release + # chokes on -Wl,-G. The following line is correct: + shared_flag='-G' + else + if test yes = "$aix_use_runtimelinking"; then + shared_flag='$wl-G' + else + shared_flag='$wl-bM:SRE' + fi + shared_flag_aix='$wl-bM:SRE' + shared_flag_svr4='$wl-G' + fi + fi + + export_dynamic_flag_spec='$wl-bexpall' + # It seems that -bexpall does not export symbols beginning with + # underscore (_), so it is better to generate a list of symbols to export. + always_export_symbols=yes + if test aix,yes = "$with_aix_soname,$aix_use_runtimelinking"; then + # Warning - without using the other runtime loading flags (-brtl), + # -berok will link without error, but may produce a broken library. + allow_undefined_flag='-berok' + # Determine the default libpath from the value encoded in an + # empty executable. + if test set = "${lt_cv_aix_libpath+set}"; then + aix_libpath=$lt_cv_aix_libpath +else + if ${lt_cv_aix_libpath_+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + + lt_aix_libpath_sed=' + /Import File Strings/,/^$/ { + /^0/ { + s/^0 *\([^ ]*\) *$/\1/ + p + } + }' + lt_cv_aix_libpath_=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` + # Check for a 64-bit object if we didn't find anything. + if test -z "$lt_cv_aix_libpath_"; then + lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` + fi +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + if test -z "$lt_cv_aix_libpath_"; then + lt_cv_aix_libpath_=/usr/lib:/lib + fi + +fi + + aix_libpath=$lt_cv_aix_libpath_ +fi + + hardcode_libdir_flag_spec='$wl-blibpath:$libdir:'"$aix_libpath" + archive_expsym_cmds='$CC -o $output_objdir/$soname $libobjs $deplibs $wl'$no_entry_flag' $compiler_flags `if test -n "$allow_undefined_flag"; then func_echo_all "$wl$allow_undefined_flag"; else :; fi` $wl'$exp_sym_flag:\$export_symbols' '$shared_flag + else + if test ia64 = "$host_cpu"; then + hardcode_libdir_flag_spec='$wl-R $libdir:/usr/lib:/lib' + allow_undefined_flag="-z nodefs" + archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\$wl$no_entry_flag"' $compiler_flags $wl$allow_undefined_flag '"\$wl$exp_sym_flag:\$export_symbols" + else + # Determine the default libpath from the value encoded in an + # empty executable. + if test set = "${lt_cv_aix_libpath+set}"; then + aix_libpath=$lt_cv_aix_libpath +else + if ${lt_cv_aix_libpath_+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + + lt_aix_libpath_sed=' + /Import File Strings/,/^$/ { + /^0/ { + s/^0 *\([^ ]*\) *$/\1/ + p + } + }' + lt_cv_aix_libpath_=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` + # Check for a 64-bit object if we didn't find anything. + if test -z "$lt_cv_aix_libpath_"; then + lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` + fi +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + if test -z "$lt_cv_aix_libpath_"; then + lt_cv_aix_libpath_=/usr/lib:/lib + fi + +fi + + aix_libpath=$lt_cv_aix_libpath_ +fi + + hardcode_libdir_flag_spec='$wl-blibpath:$libdir:'"$aix_libpath" + # Warning - without using the other run time loading flags, + # -berok will link without error, but may produce a broken library. + no_undefined_flag=' $wl-bernotok' + allow_undefined_flag=' $wl-berok' + if test yes = "$with_gnu_ld"; then + # We only use this code for GNU lds that support --whole-archive. + whole_archive_flag_spec='$wl--whole-archive$convenience $wl--no-whole-archive' + else + # Exported symbols can be pulled into shared objects from archives + whole_archive_flag_spec='$convenience' + fi + archive_cmds_need_lc=yes + archive_expsym_cmds='$RM -r $output_objdir/$realname.d~$MKDIR $output_objdir/$realname.d' + # -brtl affects multiple linker settings, -berok does not and is overridden later + compiler_flags_filtered='`func_echo_all "$compiler_flags " | $SED -e "s%-brtl\\([, ]\\)%-berok\\1%g"`' + if test svr4 != "$with_aix_soname"; then + # This is similar to how AIX traditionally builds its shared libraries. + archive_expsym_cmds="$archive_expsym_cmds"'~$CC '$shared_flag_aix' -o $output_objdir/$realname.d/$soname $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$realname.d/$soname' + fi + if test aix != "$with_aix_soname"; then + archive_expsym_cmds="$archive_expsym_cmds"'~$CC '$shared_flag_svr4' -o $output_objdir/$realname.d/$shared_archive_member_spec.o $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$STRIP -e $output_objdir/$realname.d/$shared_archive_member_spec.o~( func_echo_all "#! $soname($shared_archive_member_spec.o)"; if test shr_64 = "$shared_archive_member_spec"; then func_echo_all "# 64"; else func_echo_all "# 32"; fi; cat $export_symbols ) > $output_objdir/$realname.d/$shared_archive_member_spec.imp~$AR $AR_FLAGS $output_objdir/$soname $output_objdir/$realname.d/$shared_archive_member_spec.o $output_objdir/$realname.d/$shared_archive_member_spec.imp' + else + # used by -dlpreopen to get the symbols + archive_expsym_cmds="$archive_expsym_cmds"'~$MV $output_objdir/$realname.d/$soname $output_objdir' + fi + archive_expsym_cmds="$archive_expsym_cmds"'~$RM -r $output_objdir/$realname.d' + fi + fi + ;; + + amigaos*) + case $host_cpu in + powerpc) + # see comment about AmigaOS4 .so support + archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + archive_expsym_cmds='' + ;; + m68k) + archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)' + hardcode_libdir_flag_spec='-L$libdir' + hardcode_minus_L=yes + ;; + esac + ;; + + bsdi[45]*) + export_dynamic_flag_spec=-rdynamic + ;; + + cygwin* | mingw* | pw32* | cegcc*) + # When not using gcc, we currently assume that we are using + # Microsoft Visual C++. + # hardcode_libdir_flag_spec is actually meaningless, as there is + # no search path for DLLs. + case $cc_basename in + cl*) + # Native MSVC + hardcode_libdir_flag_spec=' ' + allow_undefined_flag=unsupported + always_export_symbols=yes + file_list_spec='@' + # Tell ltmain to make .lib files, not .a files. + libext=lib + # Tell ltmain to make .dll files, not .so files. + shrext_cmds=.dll + # FIXME: Setting linknames here is a bad hack. + archive_cmds='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~linknames=' + archive_expsym_cmds='if test DEF = "`$SED -n -e '\''s/^[ ]*//'\'' -e '\''/^\(;.*\)*$/d'\'' -e '\''s/^\(EXPORTS\|LIBRARY\)\([ ].*\)*$/DEF/p'\'' -e q $export_symbols`" ; then + cp "$export_symbols" "$output_objdir/$soname.def"; + echo "$tool_output_objdir$soname.def" > "$output_objdir/$soname.exp"; + else + $SED -e '\''s/^/-link -EXPORT:/'\'' < $export_symbols > $output_objdir/$soname.exp; + fi~ + $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~ + linknames=' + # The linker will not automatically build a static lib if we build a DLL. + # _LT_TAGVAR(old_archive_from_new_cmds, )='true' + enable_shared_with_static_runtimes=yes + exclude_expsyms='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*' + export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1,DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols' + # Don't use ranlib + old_postinstall_cmds='chmod 644 $oldlib' + postlink_cmds='lt_outputfile="@OUTPUT@"~ + lt_tool_outputfile="@TOOL_OUTPUT@"~ + case $lt_outputfile in + *.exe|*.EXE) ;; + *) + lt_outputfile=$lt_outputfile.exe + lt_tool_outputfile=$lt_tool_outputfile.exe + ;; + esac~ + if test : != "$MANIFEST_TOOL" && test -f "$lt_outputfile.manifest"; then + $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1; + $RM "$lt_outputfile.manifest"; + fi' + ;; + *) + # Assume MSVC wrapper + hardcode_libdir_flag_spec=' ' + allow_undefined_flag=unsupported + # Tell ltmain to make .lib files, not .a files. + libext=lib + # Tell ltmain to make .dll files, not .so files. + shrext_cmds=.dll + # FIXME: Setting linknames here is a bad hack. + archive_cmds='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames=' + # The linker will automatically build a .lib file if we build a DLL. + old_archive_from_new_cmds='true' + # FIXME: Should let the user specify the lib program. + old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs' + enable_shared_with_static_runtimes=yes + ;; + esac + ;; + + darwin* | rhapsody*) + + + archive_cmds_need_lc=no + hardcode_direct=no + hardcode_automatic=yes + hardcode_shlibpath_var=unsupported + if test yes = "$lt_cv_ld_force_load"; then + whole_archive_flag_spec='`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience $wl-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`' + + else + whole_archive_flag_spec='' + fi + link_all_deplibs=yes + allow_undefined_flag=$_lt_dar_allow_undefined + case $cc_basename in + ifort*|nagfor*) _lt_dar_can_shared=yes ;; + *) _lt_dar_can_shared=$GCC ;; + esac + if test yes = "$_lt_dar_can_shared"; then + output_verbose_link_cmd=func_echo_all + archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dsymutil" + module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dsymutil" + archive_expsym_cmds="sed 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dar_export_syms$_lt_dsymutil" + module_expsym_cmds="sed -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil" + + else + ld_shlibs=no + fi + + ;; + + dgux*) + archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + hardcode_libdir_flag_spec='-L$libdir' + hardcode_shlibpath_var=no + ;; + + # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor + # support. Future versions do this automatically, but an explicit c++rt0.o + # does not break anything, and helps significantly (at the cost of a little + # extra space). + freebsd2.2*) + archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o' + hardcode_libdir_flag_spec='-R$libdir' + hardcode_direct=yes + hardcode_shlibpath_var=no + ;; + + # Unfortunately, older versions of FreeBSD 2 do not have this feature. + freebsd2.*) + archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' + hardcode_direct=yes + hardcode_minus_L=yes + hardcode_shlibpath_var=no + ;; + + # FreeBSD 3 and greater uses gcc -shared to do shared libraries. + freebsd* | dragonfly*) + archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' + hardcode_libdir_flag_spec='-R$libdir' + hardcode_direct=yes + hardcode_shlibpath_var=no + ;; + + hpux9*) + if test yes = "$GCC"; then + archive_cmds='$RM $output_objdir/$soname~$CC -shared $pic_flag $wl+b $wl$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib' + else + archive_cmds='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib' + fi + hardcode_libdir_flag_spec='$wl+b $wl$libdir' + hardcode_libdir_separator=: + hardcode_direct=yes + + # hardcode_minus_L: Not really in the search PATH, + # but as the default location of the library. + hardcode_minus_L=yes + export_dynamic_flag_spec='$wl-E' + ;; + + hpux10*) + if test yes,no = "$GCC,$with_gnu_ld"; then + archive_cmds='$CC -shared $pic_flag $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $libobjs $deplibs $compiler_flags' + else + archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' + fi + if test no = "$with_gnu_ld"; then + hardcode_libdir_flag_spec='$wl+b $wl$libdir' + hardcode_libdir_separator=: + hardcode_direct=yes + hardcode_direct_absolute=yes + export_dynamic_flag_spec='$wl-E' + # hardcode_minus_L: Not really in the search PATH, + # but as the default location of the library. + hardcode_minus_L=yes + fi + ;; + + hpux11*) + if test yes,no = "$GCC,$with_gnu_ld"; then + case $host_cpu in + hppa*64*) + archive_cmds='$CC -shared $wl+h $wl$soname -o $lib $libobjs $deplibs $compiler_flags' + ;; + ia64*) + archive_cmds='$CC -shared $pic_flag $wl+h $wl$soname $wl+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags' + ;; + *) + archive_cmds='$CC -shared $pic_flag $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $libobjs $deplibs $compiler_flags' + ;; + esac + else + case $host_cpu in + hppa*64*) + archive_cmds='$CC -b $wl+h $wl$soname -o $lib $libobjs $deplibs $compiler_flags' + ;; + ia64*) + archive_cmds='$CC -b $wl+h $wl$soname $wl+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags' + ;; + *) + + # Older versions of the 11.00 compiler do not understand -b yet + # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does) + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC understands -b" >&5 +$as_echo_n "checking if $CC understands -b... " >&6; } +if ${lt_cv_prog_compiler__b+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_prog_compiler__b=no + save_LDFLAGS=$LDFLAGS + LDFLAGS="$LDFLAGS -b" + echo "$lt_simple_link_test_code" > conftest.$ac_ext + if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then + # The linker can only warn and ignore the option if not recognized + # So say no if there are warnings + if test -s conftest.err; then + # Append any errors to the config.log. + cat conftest.err 1>&5 + $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp + $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 + if diff conftest.exp conftest.er2 >/dev/null; then + lt_cv_prog_compiler__b=yes + fi + else + lt_cv_prog_compiler__b=yes + fi + fi + $RM -r conftest* + LDFLAGS=$save_LDFLAGS + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler__b" >&5 +$as_echo "$lt_cv_prog_compiler__b" >&6; } + +if test yes = "$lt_cv_prog_compiler__b"; then + archive_cmds='$CC -b $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $libobjs $deplibs $compiler_flags' +else + archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' +fi + + ;; + esac + fi + if test no = "$with_gnu_ld"; then + hardcode_libdir_flag_spec='$wl+b $wl$libdir' + hardcode_libdir_separator=: + + case $host_cpu in + hppa*64*|ia64*) + hardcode_direct=no + hardcode_shlibpath_var=no + ;; + *) + hardcode_direct=yes + hardcode_direct_absolute=yes + export_dynamic_flag_spec='$wl-E' + + # hardcode_minus_L: Not really in the search PATH, + # but as the default location of the library. + hardcode_minus_L=yes + ;; + esac + fi + ;; + + irix5* | irix6* | nonstopux*) + if test yes = "$GCC"; then + archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' + # Try to use the -exported_symbol ld option, if it does not + # work, assume that -exports_file does not work either and + # implicitly export all symbols. + # This should be the same for all languages, so no per-tag cache variable. + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $host_os linker accepts -exported_symbol" >&5 +$as_echo_n "checking whether the $host_os linker accepts -exported_symbol... " >&6; } +if ${lt_cv_irix_exported_symbol+:} false; then : + $as_echo_n "(cached) " >&6 +else + save_LDFLAGS=$LDFLAGS + LDFLAGS="$LDFLAGS -shared $wl-exported_symbol ${wl}foo $wl-update_registry $wl/dev/null" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +int foo (void) { return 0; } +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + lt_cv_irix_exported_symbol=yes +else + lt_cv_irix_exported_symbol=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + LDFLAGS=$save_LDFLAGS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_irix_exported_symbol" >&5 +$as_echo "$lt_cv_irix_exported_symbol" >&6; } + if test yes = "$lt_cv_irix_exported_symbol"; then + archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations $wl-exports_file $wl$export_symbols -o $lib' + fi + else + archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' + archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -exports_file $export_symbols -o $lib' + fi + archive_cmds_need_lc='no' + hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' + hardcode_libdir_separator=: + inherit_rpath=yes + link_all_deplibs=yes + ;; + + linux*) + case $cc_basename in + tcc*) + # Fabrice Bellard et al's Tiny C Compiler + ld_shlibs=yes + archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' + ;; + esac + ;; + + netbsd*) + if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then + archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out + else + archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF + fi + hardcode_libdir_flag_spec='-R$libdir' + hardcode_direct=yes + hardcode_shlibpath_var=no + ;; + + newsos6) + archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + hardcode_direct=yes + hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' + hardcode_libdir_separator=: + hardcode_shlibpath_var=no + ;; + + *nto* | *qnx*) + ;; + + openbsd* | bitrig*) + if test -f /usr/libexec/ld.so; then + hardcode_direct=yes + hardcode_shlibpath_var=no + hardcode_direct_absolute=yes + if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then + archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags $wl-retain-symbols-file,$export_symbols' + hardcode_libdir_flag_spec='$wl-rpath,$libdir' + export_dynamic_flag_spec='$wl-E' + else + archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' + hardcode_libdir_flag_spec='$wl-rpath,$libdir' + fi + else + ld_shlibs=no + fi + ;; + + os2*) + hardcode_libdir_flag_spec='-L$libdir' + hardcode_minus_L=yes + allow_undefined_flag=unsupported + shrext_cmds=.dll + archive_cmds='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ + $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ + $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ + $ECHO EXPORTS >> $output_objdir/$libname.def~ + emxexp $libobjs | $SED /"_DLL_InitTerm"/d >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + archive_expsym_cmds='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ + $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ + $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ + $ECHO EXPORTS >> $output_objdir/$libname.def~ + prefix_cmds="$SED"~ + if test EXPORTS = "`$SED 1q $export_symbols`"; then + prefix_cmds="$prefix_cmds -e 1d"; + fi~ + prefix_cmds="$prefix_cmds -e \"s/^\(.*\)$/_\1/g\""~ + cat $export_symbols | $prefix_cmds >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + old_archive_From_new_cmds='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def' + enable_shared_with_static_runtimes=yes + ;; + + osf3*) + if test yes = "$GCC"; then + allow_undefined_flag=' $wl-expect_unresolved $wl\*' + archive_cmds='$CC -shared$allow_undefined_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' + else + allow_undefined_flag=' -expect_unresolved \*' + archive_cmds='$CC -shared$allow_undefined_flag $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' + fi + archive_cmds_need_lc='no' + hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' + hardcode_libdir_separator=: + ;; + + osf4* | osf5*) # as osf3* with the addition of -msym flag + if test yes = "$GCC"; then + allow_undefined_flag=' $wl-expect_unresolved $wl\*' + archive_cmds='$CC -shared$allow_undefined_flag $pic_flag $libobjs $deplibs $compiler_flags $wl-msym $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' + hardcode_libdir_flag_spec='$wl-rpath $wl$libdir' + else + allow_undefined_flag=' -expect_unresolved \*' + archive_cmds='$CC -shared$allow_undefined_flag $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' + archive_expsym_cmds='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~ + $CC -shared$allow_undefined_flag $wl-input $wl$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib~$RM $lib.exp' + + # Both c and cxx compiler support -rpath directly + hardcode_libdir_flag_spec='-rpath $libdir' + fi + archive_cmds_need_lc='no' + hardcode_libdir_separator=: + ;; + + solaris*) + no_undefined_flag=' -z defs' + if test yes = "$GCC"; then + wlarc='$wl' + archive_cmds='$CC -shared $pic_flag $wl-z ${wl}text $wl-h $wl$soname -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $CC -shared $pic_flag $wl-z ${wl}text $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp' + else + case `$CC -V 2>&1` in + *"Compilers 5.0"*) + wlarc='' + archive_cmds='$LD -G$allow_undefined_flag -h $soname -o $lib $libobjs $deplibs $linker_flags' + archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $LD -G$allow_undefined_flag -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp' + ;; + *) + wlarc='$wl' + archive_cmds='$CC -G$allow_undefined_flag -h $soname -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $CC -G$allow_undefined_flag -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp' + ;; + esac + fi + hardcode_libdir_flag_spec='-R$libdir' + hardcode_shlibpath_var=no + case $host_os in + solaris2.[0-5] | solaris2.[0-5].*) ;; + *) + # The compiler driver will combine and reorder linker options, + # but understands '-z linker_flag'. GCC discards it without '$wl', + # but is careful enough not to reorder. + # Supported since Solaris 2.6 (maybe 2.5.1?) + if test yes = "$GCC"; then + whole_archive_flag_spec='$wl-z ${wl}allextract$convenience $wl-z ${wl}defaultextract' + else + whole_archive_flag_spec='-z allextract$convenience -z defaultextract' + fi + ;; + esac + link_all_deplibs=yes + ;; + + sunos4*) + if test sequent = "$host_vendor"; then + # Use $CC to link under sequent, because it throws in some extra .o + # files that make .init and .fini sections work. + archive_cmds='$CC -G $wl-h $soname -o $lib $libobjs $deplibs $compiler_flags' + else + archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags' + fi + hardcode_libdir_flag_spec='-L$libdir' + hardcode_direct=yes + hardcode_minus_L=yes + hardcode_shlibpath_var=no + ;; + + sysv4) + case $host_vendor in + sni) + archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + hardcode_direct=yes # is this really true??? + ;; + siemens) + ## LD is ld it makes a PLAMLIB + ## CC just makes a GrossModule. + archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags' + reload_cmds='$CC -r -o $output$reload_objs' + hardcode_direct=no + ;; + motorola) + archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + hardcode_direct=no #Motorola manual says yes, but my tests say they lie + ;; + esac + runpath_var='LD_RUN_PATH' + hardcode_shlibpath_var=no + ;; + + sysv4.3*) + archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + hardcode_shlibpath_var=no + export_dynamic_flag_spec='-Bexport' + ;; + + sysv4*MP*) + if test -d /usr/nec; then + archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + hardcode_shlibpath_var=no + runpath_var=LD_RUN_PATH + hardcode_runpath_var=yes + ld_shlibs=yes + fi + ;; + + sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*) + no_undefined_flag='$wl-z,text' + archive_cmds_need_lc=no + hardcode_shlibpath_var=no + runpath_var='LD_RUN_PATH' + + if test yes = "$GCC"; then + archive_cmds='$CC -shared $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds='$CC -shared $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + else + archive_cmds='$CC -G $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds='$CC -G $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + fi + ;; + + sysv5* | sco3.2v5* | sco5v6*) + # Note: We CANNOT use -z defs as we might desire, because we do not + # link with -lc, and that would cause any symbols used from libc to + # always be unresolved, which means just about no library would + # ever link correctly. If we're not using GNU ld we use -z text + # though, which does catch some bad symbols but isn't as heavy-handed + # as -z defs. + no_undefined_flag='$wl-z,text' + allow_undefined_flag='$wl-z,nodefs' + archive_cmds_need_lc=no + hardcode_shlibpath_var=no + hardcode_libdir_flag_spec='$wl-R,$libdir' + hardcode_libdir_separator=':' + link_all_deplibs=yes + export_dynamic_flag_spec='$wl-Bexport' + runpath_var='LD_RUN_PATH' + + if test yes = "$GCC"; then + archive_cmds='$CC -shared $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds='$CC -shared $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + else + archive_cmds='$CC -G $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds='$CC -G $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + fi + ;; + + uts4*) + archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + hardcode_libdir_flag_spec='-L$libdir' + hardcode_shlibpath_var=no + ;; + + *) + ld_shlibs=no + ;; + esac + + if test sni = "$host_vendor"; then + case $host in + sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*) + export_dynamic_flag_spec='$wl-Blargedynsym' + ;; + esac + fi + fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ld_shlibs" >&5 +$as_echo "$ld_shlibs" >&6; } +test no = "$ld_shlibs" && can_build_shared=no + +with_gnu_ld=$with_gnu_ld + + + + + + + + + + + + + + + +# +# Do we need to explicitly link libc? +# +case "x$archive_cmds_need_lc" in +x|xyes) + # Assume -lc should be added + archive_cmds_need_lc=yes + + if test yes,yes = "$GCC,$enable_shared"; then + case $archive_cmds in + *'~'*) + # FIXME: we may have to deal with multi-command sequences. + ;; + '$CC '*) + # Test whether the compiler implicitly links with -lc since on some + # systems, -lgcc has to come before -lc. If gcc already passes -lc + # to ld, don't add -lc before -lgcc. + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -lc should be explicitly linked in" >&5 +$as_echo_n "checking whether -lc should be explicitly linked in... " >&6; } +if ${lt_cv_archive_cmds_need_lc+:} false; then : + $as_echo_n "(cached) " >&6 +else + $RM conftest* + echo "$lt_simple_compile_test_code" > conftest.$ac_ext + + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 + (eval $ac_compile) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } 2>conftest.err; then + soname=conftest + lib=conftest + libobjs=conftest.$ac_objext + deplibs= + wl=$lt_prog_compiler_wl + pic_flag=$lt_prog_compiler_pic + compiler_flags=-v + linker_flags=-v + verstring= + output_objdir=. + libname=conftest + lt_save_allow_undefined_flag=$allow_undefined_flag + allow_undefined_flag= + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1\""; } >&5 + (eval $archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } + then + lt_cv_archive_cmds_need_lc=no + else + lt_cv_archive_cmds_need_lc=yes + fi + allow_undefined_flag=$lt_save_allow_undefined_flag + else + cat conftest.err 1>&5 + fi + $RM conftest* + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_archive_cmds_need_lc" >&5 +$as_echo "$lt_cv_archive_cmds_need_lc" >&6; } + archive_cmds_need_lc=$lt_cv_archive_cmds_need_lc + ;; + esac + fi + ;; +esac + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking dynamic linker characteristics" >&5 +$as_echo_n "checking dynamic linker characteristics... " >&6; } + +if test yes = "$GCC"; then + case $host_os in + darwin*) lt_awk_arg='/^libraries:/,/LR/' ;; + *) lt_awk_arg='/^libraries:/' ;; + esac + case $host_os in + mingw* | cegcc*) lt_sed_strip_eq='s|=\([A-Za-z]:\)|\1|g' ;; + *) lt_sed_strip_eq='s|=/|/|g' ;; + esac + lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq` + case $lt_search_path_spec in + *\;*) + # if the path contains ";" then we assume it to be the separator + # otherwise default to the standard path separator (i.e. ":") - it is + # assumed that no part of a normal pathname contains ";" but that should + # okay in the real world where ";" in dirpaths is itself problematic. + lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED 's/;/ /g'` + ;; + *) + lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED "s/$PATH_SEPARATOR/ /g"` + ;; + esac + # Ok, now we have the path, separated by spaces, we can step through it + # and add multilib dir if necessary... + lt_tmp_lt_search_path_spec= + lt_multi_os_dir=/`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null` + # ...but if some path component already ends with the multilib dir we assume + # that all is fine and trust -print-search-dirs as is (GCC 4.2? or newer). + case "$lt_multi_os_dir; $lt_search_path_spec " in + "/; "* | "/.; "* | "/./; "* | *"$lt_multi_os_dir "* | *"$lt_multi_os_dir/ "*) + lt_multi_os_dir= + ;; + esac + for lt_sys_path in $lt_search_path_spec; do + if test -d "$lt_sys_path$lt_multi_os_dir"; then + lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path$lt_multi_os_dir" + elif test -n "$lt_multi_os_dir"; then + test -d "$lt_sys_path" && \ + lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path" + fi + done + lt_search_path_spec=`$ECHO "$lt_tmp_lt_search_path_spec" | awk ' +BEGIN {RS = " "; FS = "/|\n";} { + lt_foo = ""; + lt_count = 0; + for (lt_i = NF; lt_i > 0; lt_i--) { + if ($lt_i != "" && $lt_i != ".") { + if ($lt_i == "..") { + lt_count++; + } else { + if (lt_count == 0) { + lt_foo = "/" $lt_i lt_foo; + } else { + lt_count--; + } + } + } + } + if (lt_foo != "") { lt_freq[lt_foo]++; } + if (lt_freq[lt_foo] == 1) { print lt_foo; } +}'` + # AWK program above erroneously prepends '/' to C:/dos/paths + # for these hosts. + case $host_os in + mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\ + $SED 's|/\([A-Za-z]:\)|\1|g'` ;; + esac + sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP` +else + sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib" +fi +library_names_spec= +libname_spec='lib$name' +soname_spec= +shrext_cmds=.so +postinstall_cmds= +postuninstall_cmds= +finish_cmds= +finish_eval= +shlibpath_var= +shlibpath_overrides_runpath=unknown +version_type=none +dynamic_linker="$host_os ld.so" +sys_lib_dlsearch_path_spec="/lib /usr/lib" +need_lib_prefix=unknown +hardcode_into_libs=no + +# when you set need_version to no, make sure it does not cause -set_version +# flags to be left without arguments +need_version=unknown + + + +case $host_os in +aix3*) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname.a' + shlibpath_var=LIBPATH + + # AIX 3 has no versioning support, so we append a major version to the name. + soname_spec='$libname$release$shared_ext$major' + ;; + +aix[4-9]*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + hardcode_into_libs=yes + if test ia64 = "$host_cpu"; then + # AIX 5 supports IA64 + library_names_spec='$libname$release$shared_ext$major $libname$release$shared_ext$versuffix $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + else + # With GCC up to 2.95.x, collect2 would create an import file + # for dependence libraries. The import file would start with + # the line '#! .'. This would cause the generated library to + # depend on '.', always an invalid library. This was fixed in + # development snapshots of GCC prior to 3.0. + case $host_os in + aix4 | aix4.[01] | aix4.[01].*) + if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)' + echo ' yes ' + echo '#endif'; } | $CC -E - | $GREP yes > /dev/null; then + : + else + can_build_shared=no + fi + ;; + esac + # Using Import Files as archive members, it is possible to support + # filename-based versioning of shared library archives on AIX. While + # this would work for both with and without runtime linking, it will + # prevent static linking of such archives. So we do filename-based + # shared library versioning with .so extension only, which is used + # when both runtime linking and shared linking is enabled. + # Unfortunately, runtime linking may impact performance, so we do + # not want this to be the default eventually. Also, we use the + # versioned .so libs for executables only if there is the -brtl + # linker flag in LDFLAGS as well, or --with-aix-soname=svr4 only. + # To allow for filename-based versioning support, we need to create + # libNAME.so.V as an archive file, containing: + # *) an Import File, referring to the versioned filename of the + # archive as well as the shared archive member, telling the + # bitwidth (32 or 64) of that shared object, and providing the + # list of exported symbols of that shared object, eventually + # decorated with the 'weak' keyword + # *) the shared object with the F_LOADONLY flag set, to really avoid + # it being seen by the linker. + # At run time we better use the real file rather than another symlink, + # but for link time we create the symlink libNAME.so -> libNAME.so.V + + case $with_aix_soname,$aix_use_runtimelinking in + # AIX (on Power*) has no versioning support, so currently we cannot hardcode correct + # soname into executable. Probably we can add versioning support to + # collect2, so additional links can be useful in future. + aix,yes) # traditional libtool + dynamic_linker='AIX unversionable lib.so' + # If using run time linking (on AIX 4.2 or later) use lib.so + # instead of lib.a to let people know that these are not + # typical AIX shared libraries. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + ;; + aix,no) # traditional AIX only + dynamic_linker='AIX lib.a(lib.so.V)' + # We preserve .a as extension for shared libraries through AIX4.2 + # and later when we are not doing run time linking. + library_names_spec='$libname$release.a $libname.a' + soname_spec='$libname$release$shared_ext$major' + ;; + svr4,*) # full svr4 only + dynamic_linker="AIX lib.so.V($shared_archive_member_spec.o)" + library_names_spec='$libname$release$shared_ext$major $libname$shared_ext' + # We do not specify a path in Import Files, so LIBPATH fires. + shlibpath_overrides_runpath=yes + ;; + *,yes) # both, prefer svr4 + dynamic_linker="AIX lib.so.V($shared_archive_member_spec.o), lib.a(lib.so.V)" + library_names_spec='$libname$release$shared_ext$major $libname$shared_ext' + # unpreferred sharedlib libNAME.a needs extra handling + postinstall_cmds='test -n "$linkname" || linkname="$realname"~func_stripname "" ".so" "$linkname"~$install_shared_prog "$dir/$func_stripname_result.$libext" "$destdir/$func_stripname_result.$libext"~test -z "$tstripme" || test -z "$striplib" || $striplib "$destdir/$func_stripname_result.$libext"' + postuninstall_cmds='for n in $library_names $old_library; do :; done~func_stripname "" ".so" "$n"~test "$func_stripname_result" = "$n" || func_append rmfiles " $odir/$func_stripname_result.$libext"' + # We do not specify a path in Import Files, so LIBPATH fires. + shlibpath_overrides_runpath=yes + ;; + *,no) # both, prefer aix + dynamic_linker="AIX lib.a(lib.so.V), lib.so.V($shared_archive_member_spec.o)" + library_names_spec='$libname$release.a $libname.a' + soname_spec='$libname$release$shared_ext$major' + # unpreferred sharedlib libNAME.so.V and symlink libNAME.so need extra handling + postinstall_cmds='test -z "$dlname" || $install_shared_prog $dir/$dlname $destdir/$dlname~test -z "$tstripme" || test -z "$striplib" || $striplib $destdir/$dlname~test -n "$linkname" || linkname=$realname~func_stripname "" ".a" "$linkname"~(cd "$destdir" && $LN_S -f $dlname $func_stripname_result.so)' + postuninstall_cmds='test -z "$dlname" || func_append rmfiles " $odir/$dlname"~for n in $old_library $library_names; do :; done~func_stripname "" ".a" "$n"~func_append rmfiles " $odir/$func_stripname_result.so"' + ;; + esac + shlibpath_var=LIBPATH + fi + ;; + +amigaos*) + case $host_cpu in + powerpc) + # Since July 2007 AmigaOS4 officially supports .so libraries. + # When compiling the executable, add -use-dynld -Lsobjs: to the compileline. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + ;; + m68k) + library_names_spec='$libname.ixlibrary $libname.a' + # Create ${libname}_ixlibrary.a entries in /sys/libs. + finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([^/]*\)\.ixlibrary$%\1%'\''`; $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done' + ;; + esac + ;; + +beos*) + library_names_spec='$libname$shared_ext' + dynamic_linker="$host_os ld.so" + shlibpath_var=LIBRARY_PATH + ;; + +bsdi[45]*) + version_type=linux # correct to gnu/linux during the next big refactor + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir' + shlibpath_var=LD_LIBRARY_PATH + sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib" + sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib" + # the default ld.so.conf also contains /usr/contrib/lib and + # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow + # libtool to hard-code these into programs + ;; + +cygwin* | mingw* | pw32* | cegcc*) + version_type=windows + shrext_cmds=.dll + need_version=no + need_lib_prefix=no + + case $GCC,$cc_basename in + yes,*) + # gcc + library_names_spec='$libname.dll.a' + # DLL is installed to $(libdir)/../bin by postinstall_cmds + postinstall_cmds='base_file=`basename \$file`~ + dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; echo \$dlname'\''`~ + dldir=$destdir/`dirname \$dlpath`~ + test -d \$dldir || mkdir -p \$dldir~ + $install_prog $dir/$dlname \$dldir/$dlname~ + chmod a+x \$dldir/$dlname~ + if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then + eval '\''$striplib \$dldir/$dlname'\'' || exit \$?; + fi' + postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~ + dlpath=$dir/\$dldll~ + $RM \$dlpath' + shlibpath_overrides_runpath=yes + + case $host_os in + cygwin*) + # Cygwin DLLs use 'cyg' prefix rather than 'lib' + soname_spec='`echo $libname | sed -e 's/^lib/cyg/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' + + sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api" + ;; + mingw* | cegcc*) + # MinGW DLLs use traditional 'lib' prefix + soname_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' + ;; + pw32*) + # pw32 DLLs use 'pw' prefix rather than 'lib' + library_names_spec='`echo $libname | sed -e 's/^lib/pw/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' + ;; + esac + dynamic_linker='Win32 ld.exe' + ;; + + *,cl*) + # Native MSVC + libname_spec='$name' + soname_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' + library_names_spec='$libname.dll.lib' + + case $build_os in + mingw*) + sys_lib_search_path_spec= + lt_save_ifs=$IFS + IFS=';' + for lt_path in $LIB + do + IFS=$lt_save_ifs + # Let DOS variable expansion print the short 8.3 style file name. + lt_path=`cd "$lt_path" 2>/dev/null && cmd //C "for %i in (".") do @echo %~si"` + sys_lib_search_path_spec="$sys_lib_search_path_spec $lt_path" + done + IFS=$lt_save_ifs + # Convert to MSYS style. + sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'` + ;; + cygwin*) + # Convert to unix form, then to dos form, then back to unix form + # but this time dos style (no spaces!) so that the unix form looks + # like /cygdrive/c/PROGRA~1:/cygdr... + sys_lib_search_path_spec=`cygpath --path --unix "$LIB"` + sys_lib_search_path_spec=`cygpath --path --dos "$sys_lib_search_path_spec" 2>/dev/null` + sys_lib_search_path_spec=`cygpath --path --unix "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"` + ;; + *) + sys_lib_search_path_spec=$LIB + if $ECHO "$sys_lib_search_path_spec" | $GREP ';[c-zC-Z]:/' >/dev/null; then + # It is most probably a Windows format PATH. + sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'` + else + sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"` + fi + # FIXME: find the short name or the path components, as spaces are + # common. (e.g. "Program Files" -> "PROGRA~1") + ;; + esac + + # DLL is installed to $(libdir)/../bin by postinstall_cmds + postinstall_cmds='base_file=`basename \$file`~ + dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; echo \$dlname'\''`~ + dldir=$destdir/`dirname \$dlpath`~ + test -d \$dldir || mkdir -p \$dldir~ + $install_prog $dir/$dlname \$dldir/$dlname' + postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~ + dlpath=$dir/\$dldll~ + $RM \$dlpath' + shlibpath_overrides_runpath=yes + dynamic_linker='Win32 link.exe' + ;; + + *) + # Assume MSVC wrapper + library_names_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext $libname.lib' + dynamic_linker='Win32 ld.exe' + ;; + esac + # FIXME: first we should search . and the directory the executable is in + shlibpath_var=PATH + ;; + +darwin* | rhapsody*) + dynamic_linker="$host_os dyld" + version_type=darwin + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$major$shared_ext $libname$shared_ext' + soname_spec='$libname$release$major$shared_ext' + shlibpath_overrides_runpath=yes + shlibpath_var=DYLD_LIBRARY_PATH + shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`' + + sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib" + sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib' + ;; + +dgux*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + ;; + +freebsd* | dragonfly*) + # DragonFly does not have aout. When/if they implement a new + # versioning mechanism, adjust this. + if test -x /usr/bin/objformat; then + objformat=`/usr/bin/objformat` + else + case $host_os in + freebsd[23].*) objformat=aout ;; + *) objformat=elf ;; + esac + fi + version_type=freebsd-$objformat + case $version_type in + freebsd-elf*) + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + need_version=no + need_lib_prefix=no + ;; + freebsd-*) + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + need_version=yes + ;; + esac + shlibpath_var=LD_LIBRARY_PATH + case $host_os in + freebsd2.*) + shlibpath_overrides_runpath=yes + ;; + freebsd3.[01]* | freebsdelf3.[01]*) + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + ;; + freebsd3.[2-9]* | freebsdelf3.[2-9]* | \ + freebsd4.[0-5] | freebsdelf4.[0-5] | freebsd4.1.1 | freebsdelf4.1.1) + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + ;; + *) # from 4.6 on, and DragonFly + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + ;; + esac + ;; + +haiku*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + dynamic_linker="$host_os runtime_loader" + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LIBRARY_PATH + shlibpath_overrides_runpath=no + sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/system/lib' + hardcode_into_libs=yes + ;; + +hpux9* | hpux10* | hpux11*) + # Give a soname corresponding to the major version so that dld.sl refuses to + # link against other versions. + version_type=sunos + need_lib_prefix=no + need_version=no + case $host_cpu in + ia64*) + shrext_cmds='.so' + hardcode_into_libs=yes + dynamic_linker="$host_os dld.so" + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes # Unless +noenvvar is specified. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + if test 32 = "$HPUX_IA64_MODE"; then + sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib" + sys_lib_dlsearch_path_spec=/usr/lib/hpux32 + else + sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64" + sys_lib_dlsearch_path_spec=/usr/lib/hpux64 + fi + ;; + hppa*64*) + shrext_cmds='.sl' + hardcode_into_libs=yes + dynamic_linker="$host_os dld.sl" + shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH + shlibpath_overrides_runpath=yes # Unless +noenvvar is specified. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64" + sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec + ;; + *) + shrext_cmds='.sl' + dynamic_linker="$host_os dld.sl" + shlibpath_var=SHLIB_PATH + shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + ;; + esac + # HP-UX runs *really* slowly unless shared libraries are mode 555, ... + postinstall_cmds='chmod 555 $lib' + # or fails outright, so override atomically: + install_override_mode=555 + ;; + +interix[3-9]*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + ;; + +irix5* | irix6* | nonstopux*) + case $host_os in + nonstopux*) version_type=nonstopux ;; + *) + if test yes = "$lt_cv_prog_gnu_ld"; then + version_type=linux # correct to gnu/linux during the next big refactor + else + version_type=irix + fi ;; + esac + need_lib_prefix=no + need_version=no + soname_spec='$libname$release$shared_ext$major' + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$release$shared_ext $libname$shared_ext' + case $host_os in + irix5* | nonstopux*) + libsuff= shlibsuff= + ;; + *) + case $LD in # libtool.m4 will add one of these switches to LD + *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ") + libsuff= shlibsuff= libmagic=32-bit;; + *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ") + libsuff=32 shlibsuff=N32 libmagic=N32;; + *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ") + libsuff=64 shlibsuff=64 libmagic=64-bit;; + *) libsuff= shlibsuff= libmagic=never-match;; + esac + ;; + esac + shlibpath_var=LD_LIBRARY${shlibsuff}_PATH + shlibpath_overrides_runpath=no + sys_lib_search_path_spec="/usr/lib$libsuff /lib$libsuff /usr/local/lib$libsuff" + sys_lib_dlsearch_path_spec="/usr/lib$libsuff /lib$libsuff" + hardcode_into_libs=yes + ;; + +# No shared lib support for Linux oldld, aout, or coff. +linux*oldld* | linux*aout* | linux*coff*) + dynamic_linker=no + ;; + +linux*android*) + version_type=none # Android doesn't support versioned libraries. + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext' + soname_spec='$libname$release$shared_ext' + finish_cmds= + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + + # This implies no fast_install, which is unacceptable. + # Some rework will be needed to allow for fast_install + # before this can be enabled. + hardcode_into_libs=yes + + dynamic_linker='Android linker' + # Don't embed -rpath directories since the linker doesn't support them. + hardcode_libdir_flag_spec='-L$libdir' + ;; + +# This must be glibc/ELF. +linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + + # Some binutils ld are patched to set DT_RUNPATH + if ${lt_cv_shlibpath_overrides_runpath+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_shlibpath_overrides_runpath=no + save_LDFLAGS=$LDFLAGS + save_libdir=$libdir + eval "libdir=/foo; wl=\"$lt_prog_compiler_wl\"; \ + LDFLAGS=\"\$LDFLAGS $hardcode_libdir_flag_spec\"" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + if ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null; then : + lt_cv_shlibpath_overrides_runpath=yes +fi +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + LDFLAGS=$save_LDFLAGS + libdir=$save_libdir + +fi + + shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath + + # This implies no fast_install, which is unacceptable. + # Some rework will be needed to allow for fast_install + # before this can be enabled. + hardcode_into_libs=yes + + # Ideally, we could use ldconfig to report *all* directores which are + # searched for libraries, however this is still not possible. Aside from not + # being certain /sbin/ldconfig is available, command + # 'ldconfig -N -X -v | grep ^/' on 64bit Fedora does not report /usr/lib64, + # even though it is searched at run-time. Try to do the best guess by + # appending ld.so.conf contents (and includes) to the search path. + if test -f /etc/ld.so.conf; then + lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \$2)); skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '` + sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra" + fi + + # We used to test for /lib/ld.so.1 and disable shared libraries on + # powerpc, because MkLinux only supported shared libraries with the + # GNU dynamic linker. Since this was broken with cross compilers, + # most powerpc-linux boxes support dynamic linking these days and + # people can always --disable-shared, the test was removed, and we + # assume the GNU/Linux dynamic linker is in use. + dynamic_linker='GNU/Linux ld.so' + ;; + +netbsd*) + version_type=sunos + need_lib_prefix=no + need_version=no + if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir' + dynamic_linker='NetBSD (a.out) ld.so' + else + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + dynamic_linker='NetBSD ld.elf_so' + fi + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + ;; + +newsos6) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + ;; + +*nto* | *qnx*) + version_type=qnx + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + dynamic_linker='ldqnx.so' + ;; + +openbsd* | bitrig*) + version_type=sunos + sys_lib_dlsearch_path_spec=/usr/lib + need_lib_prefix=no + if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then + need_version=no + else + need_version=yes + fi + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + ;; + +os2*) + libname_spec='$name' + version_type=windows + shrext_cmds=.dll + need_version=no + need_lib_prefix=no + # OS/2 can only load a DLL with a base name of 8 characters or less. + soname_spec='`test -n "$os2dllname" && libname="$os2dllname"; + v=$($ECHO $release$versuffix | tr -d .-); + n=$($ECHO $libname | cut -b -$((8 - ${#v})) | tr . _); + $ECHO $n$v`$shared_ext' + library_names_spec='${libname}_dll.$libext' + dynamic_linker='OS/2 ld.exe' + shlibpath_var=BEGINLIBPATH + sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib" + sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec + postinstall_cmds='base_file=`basename \$file`~ + dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; $ECHO \$dlname'\''`~ + dldir=$destdir/`dirname \$dlpath`~ + test -d \$dldir || mkdir -p \$dldir~ + $install_prog $dir/$dlname \$dldir/$dlname~ + chmod a+x \$dldir/$dlname~ + if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then + eval '\''$striplib \$dldir/$dlname'\'' || exit \$?; + fi' + postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; $ECHO \$dlname'\''`~ + dlpath=$dir/\$dldll~ + $RM \$dlpath' + ;; + +osf3* | osf4* | osf5*) + version_type=osf + need_lib_prefix=no + need_version=no + soname_spec='$libname$release$shared_ext$major' + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib" + sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec + ;; + +rdos*) + dynamic_linker=no + ;; + +solaris*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + # ldd complains unless libraries are executable + postinstall_cmds='chmod +x $lib' + ;; + +sunos4*) + version_type=sunos + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + if test yes = "$with_gnu_ld"; then + need_lib_prefix=no + fi + need_version=yes + ;; + +sysv4 | sysv4.3*) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + case $host_vendor in + sni) + shlibpath_overrides_runpath=no + need_lib_prefix=no + runpath_var=LD_RUN_PATH + ;; + siemens) + need_lib_prefix=no + ;; + motorola) + need_lib_prefix=no + need_version=no + shlibpath_overrides_runpath=no + sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib' + ;; + esac + ;; + +sysv4*MP*) + if test -d /usr/nec; then + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$shared_ext.$versuffix $libname$shared_ext.$major $libname$shared_ext' + soname_spec='$libname$shared_ext.$major' + shlibpath_var=LD_LIBRARY_PATH + fi + ;; + +sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) + version_type=sco + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + if test yes = "$with_gnu_ld"; then + sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib' + else + sys_lib_search_path_spec='/usr/ccs/lib /usr/lib' + case $host_os in + sco3.2v5*) + sys_lib_search_path_spec="$sys_lib_search_path_spec /lib" + ;; + esac + fi + sys_lib_dlsearch_path_spec='/usr/lib' + ;; + +tpf*) + # TPF is a cross-target only. Preferred cross-host = GNU/Linux. + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + ;; + +uts4*) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + ;; + +*) + dynamic_linker=no + ;; +esac +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $dynamic_linker" >&5 +$as_echo "$dynamic_linker" >&6; } +test no = "$dynamic_linker" && can_build_shared=no + +variables_saved_for_relink="PATH $shlibpath_var $runpath_var" +if test yes = "$GCC"; then + variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH" +fi + +if test set = "${lt_cv_sys_lib_search_path_spec+set}"; then + sys_lib_search_path_spec=$lt_cv_sys_lib_search_path_spec +fi + +if test set = "${lt_cv_sys_lib_dlsearch_path_spec+set}"; then + sys_lib_dlsearch_path_spec=$lt_cv_sys_lib_dlsearch_path_spec +fi + +# remember unaugmented sys_lib_dlsearch_path content for libtool script decls... +configure_time_dlsearch_path=$sys_lib_dlsearch_path_spec + +# ... but it needs LT_SYS_LIBRARY_PATH munging for other configure-time code +func_munge_path_list sys_lib_dlsearch_path_spec "$LT_SYS_LIBRARY_PATH" + +# to be used as default LT_SYS_LIBRARY_PATH value in generated libtool +configure_time_lt_sys_library_path=$LT_SYS_LIBRARY_PATH + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to hardcode library paths into programs" >&5 +$as_echo_n "checking how to hardcode library paths into programs... " >&6; } +hardcode_action= +if test -n "$hardcode_libdir_flag_spec" || + test -n "$runpath_var" || + test yes = "$hardcode_automatic"; then + + # We can hardcode non-existent directories. + if test no != "$hardcode_direct" && + # If the only mechanism to avoid hardcoding is shlibpath_var, we + # have to relink, otherwise we might link with an installed library + # when we should be linking with a yet-to-be-installed one + ## test no != "$_LT_TAGVAR(hardcode_shlibpath_var, )" && + test no != "$hardcode_minus_L"; then + # Linking always hardcodes the temporary library directory. + hardcode_action=relink + else + # We can link without hardcoding, and we can hardcode nonexisting dirs. + hardcode_action=immediate + fi +else + # We cannot hardcode anything, or else we can only hardcode existing + # directories. + hardcode_action=unsupported +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $hardcode_action" >&5 +$as_echo "$hardcode_action" >&6; } + +if test relink = "$hardcode_action" || + test yes = "$inherit_rpath"; then + # Fast installation is not supported + enable_fast_install=no +elif test yes = "$shlibpath_overrides_runpath" || + test no = "$enable_shared"; then + # Fast installation is not necessary + enable_fast_install=needless +fi + + + + + + + if test yes != "$enable_dlopen"; then + enable_dlopen=unknown + enable_dlopen_self=unknown + enable_dlopen_self_static=unknown +else + lt_cv_dlopen=no + lt_cv_dlopen_libs= + + case $host_os in + beos*) + lt_cv_dlopen=load_add_on + lt_cv_dlopen_libs= + lt_cv_dlopen_self=yes + ;; + + mingw* | pw32* | cegcc*) + lt_cv_dlopen=LoadLibrary + lt_cv_dlopen_libs= + ;; + + cygwin*) + lt_cv_dlopen=dlopen + lt_cv_dlopen_libs= + ;; + + darwin*) + # if libdl is installed we need to link against it + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5 +$as_echo_n "checking for dlopen in -ldl... " >&6; } +if ${ac_cv_lib_dl_dlopen+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-ldl $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char dlopen (); +int +main () +{ +return dlopen (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_dl_dlopen=yes +else + ac_cv_lib_dl_dlopen=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5 +$as_echo "$ac_cv_lib_dl_dlopen" >&6; } +if test "x$ac_cv_lib_dl_dlopen" = xyes; then : + lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-ldl +else + + lt_cv_dlopen=dyld + lt_cv_dlopen_libs= + lt_cv_dlopen_self=yes + +fi + + ;; + + tpf*) + # Don't try to run any link tests for TPF. We know it's impossible + # because TPF is a cross-compiler, and we know how we open DSOs. + lt_cv_dlopen=dlopen + lt_cv_dlopen_libs= + lt_cv_dlopen_self=no + ;; + + *) + ac_fn_c_check_func "$LINENO" "shl_load" "ac_cv_func_shl_load" +if test "x$ac_cv_func_shl_load" = xyes; then : + lt_cv_dlopen=shl_load +else + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5 +$as_echo_n "checking for shl_load in -ldld... " >&6; } +if ${ac_cv_lib_dld_shl_load+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-ldld $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char shl_load (); +int +main () +{ +return shl_load (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_dld_shl_load=yes +else + ac_cv_lib_dld_shl_load=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5 +$as_echo "$ac_cv_lib_dld_shl_load" >&6; } +if test "x$ac_cv_lib_dld_shl_load" = xyes; then : + lt_cv_dlopen=shl_load lt_cv_dlopen_libs=-ldld +else + ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen" +if test "x$ac_cv_func_dlopen" = xyes; then : + lt_cv_dlopen=dlopen +else + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5 +$as_echo_n "checking for dlopen in -ldl... " >&6; } +if ${ac_cv_lib_dl_dlopen+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-ldl $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char dlopen (); +int +main () +{ +return dlopen (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_dl_dlopen=yes +else + ac_cv_lib_dl_dlopen=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5 +$as_echo "$ac_cv_lib_dl_dlopen" >&6; } +if test "x$ac_cv_lib_dl_dlopen" = xyes; then : + lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-ldl +else + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lsvld" >&5 +$as_echo_n "checking for dlopen in -lsvld... " >&6; } +if ${ac_cv_lib_svld_dlopen+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-lsvld $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char dlopen (); +int +main () +{ +return dlopen (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_svld_dlopen=yes +else + ac_cv_lib_svld_dlopen=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_svld_dlopen" >&5 +$as_echo "$ac_cv_lib_svld_dlopen" >&6; } +if test "x$ac_cv_lib_svld_dlopen" = xyes; then : + lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-lsvld +else + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dld_link in -ldld" >&5 +$as_echo_n "checking for dld_link in -ldld... " >&6; } +if ${ac_cv_lib_dld_dld_link+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-ldld $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char dld_link (); +int +main () +{ +return dld_link (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_dld_dld_link=yes +else + ac_cv_lib_dld_dld_link=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_dld_link" >&5 +$as_echo "$ac_cv_lib_dld_dld_link" >&6; } +if test "x$ac_cv_lib_dld_dld_link" = xyes; then : + lt_cv_dlopen=dld_link lt_cv_dlopen_libs=-ldld +fi + + +fi + + +fi + + +fi + + +fi + + +fi + + ;; + esac + + if test no = "$lt_cv_dlopen"; then + enable_dlopen=no + else + enable_dlopen=yes + fi + + case $lt_cv_dlopen in + dlopen) + save_CPPFLAGS=$CPPFLAGS + test yes = "$ac_cv_header_dlfcn_h" && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H" + + save_LDFLAGS=$LDFLAGS + wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\" + + save_LIBS=$LIBS + LIBS="$lt_cv_dlopen_libs $LIBS" + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a program can dlopen itself" >&5 +$as_echo_n "checking whether a program can dlopen itself... " >&6; } +if ${lt_cv_dlopen_self+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test yes = "$cross_compiling"; then : + lt_cv_dlopen_self=cross +else + lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 + lt_status=$lt_dlunknown + cat > conftest.$ac_ext <<_LT_EOF +#line $LINENO "configure" +#include "confdefs.h" + +#if HAVE_DLFCN_H +#include +#endif + +#include + +#ifdef RTLD_GLOBAL +# define LT_DLGLOBAL RTLD_GLOBAL +#else +# ifdef DL_GLOBAL +# define LT_DLGLOBAL DL_GLOBAL +# else +# define LT_DLGLOBAL 0 +# endif +#endif + +/* We may have to define LT_DLLAZY_OR_NOW in the command line if we + find out it does not work in some platform. */ +#ifndef LT_DLLAZY_OR_NOW +# ifdef RTLD_LAZY +# define LT_DLLAZY_OR_NOW RTLD_LAZY +# else +# ifdef DL_LAZY +# define LT_DLLAZY_OR_NOW DL_LAZY +# else +# ifdef RTLD_NOW +# define LT_DLLAZY_OR_NOW RTLD_NOW +# else +# ifdef DL_NOW +# define LT_DLLAZY_OR_NOW DL_NOW +# else +# define LT_DLLAZY_OR_NOW 0 +# endif +# endif +# endif +# endif +#endif + +/* When -fvisibility=hidden is used, assume the code has been annotated + correspondingly for the symbols needed. */ +#if defined __GNUC__ && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)) +int fnord () __attribute__((visibility("default"))); +#endif + +int fnord () { return 42; } +int main () +{ + void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW); + int status = $lt_dlunknown; + + if (self) + { + if (dlsym (self,"fnord")) status = $lt_dlno_uscore; + else + { + if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore; + else puts (dlerror ()); + } + /* dlclose (self); */ + } + else + puts (dlerror ()); + + return status; +} +_LT_EOF + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5 + (eval $ac_link) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } && test -s "conftest$ac_exeext" 2>/dev/null; then + (./conftest; exit; ) >&5 2>/dev/null + lt_status=$? + case x$lt_status in + x$lt_dlno_uscore) lt_cv_dlopen_self=yes ;; + x$lt_dlneed_uscore) lt_cv_dlopen_self=yes ;; + x$lt_dlunknown|x*) lt_cv_dlopen_self=no ;; + esac + else : + # compilation failed + lt_cv_dlopen_self=no + fi +fi +rm -fr conftest* + + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self" >&5 +$as_echo "$lt_cv_dlopen_self" >&6; } + + if test yes = "$lt_cv_dlopen_self"; then + wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\" + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a statically linked program can dlopen itself" >&5 +$as_echo_n "checking whether a statically linked program can dlopen itself... " >&6; } +if ${lt_cv_dlopen_self_static+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test yes = "$cross_compiling"; then : + lt_cv_dlopen_self_static=cross +else + lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 + lt_status=$lt_dlunknown + cat > conftest.$ac_ext <<_LT_EOF +#line $LINENO "configure" +#include "confdefs.h" + +#if HAVE_DLFCN_H +#include +#endif + +#include + +#ifdef RTLD_GLOBAL +# define LT_DLGLOBAL RTLD_GLOBAL +#else +# ifdef DL_GLOBAL +# define LT_DLGLOBAL DL_GLOBAL +# else +# define LT_DLGLOBAL 0 +# endif +#endif + +/* We may have to define LT_DLLAZY_OR_NOW in the command line if we + find out it does not work in some platform. */ +#ifndef LT_DLLAZY_OR_NOW +# ifdef RTLD_LAZY +# define LT_DLLAZY_OR_NOW RTLD_LAZY +# else +# ifdef DL_LAZY +# define LT_DLLAZY_OR_NOW DL_LAZY +# else +# ifdef RTLD_NOW +# define LT_DLLAZY_OR_NOW RTLD_NOW +# else +# ifdef DL_NOW +# define LT_DLLAZY_OR_NOW DL_NOW +# else +# define LT_DLLAZY_OR_NOW 0 +# endif +# endif +# endif +# endif +#endif + +/* When -fvisibility=hidden is used, assume the code has been annotated + correspondingly for the symbols needed. */ +#if defined __GNUC__ && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)) +int fnord () __attribute__((visibility("default"))); +#endif + +int fnord () { return 42; } +int main () +{ + void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW); + int status = $lt_dlunknown; + + if (self) + { + if (dlsym (self,"fnord")) status = $lt_dlno_uscore; + else + { + if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore; + else puts (dlerror ()); + } + /* dlclose (self); */ + } + else + puts (dlerror ()); + + return status; +} +_LT_EOF + if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5 + (eval $ac_link) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } && test -s "conftest$ac_exeext" 2>/dev/null; then + (./conftest; exit; ) >&5 2>/dev/null + lt_status=$? + case x$lt_status in + x$lt_dlno_uscore) lt_cv_dlopen_self_static=yes ;; + x$lt_dlneed_uscore) lt_cv_dlopen_self_static=yes ;; + x$lt_dlunknown|x*) lt_cv_dlopen_self_static=no ;; + esac + else : + # compilation failed + lt_cv_dlopen_self_static=no + fi +fi +rm -fr conftest* + + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self_static" >&5 +$as_echo "$lt_cv_dlopen_self_static" >&6; } + fi + + CPPFLAGS=$save_CPPFLAGS + LDFLAGS=$save_LDFLAGS + LIBS=$save_LIBS + ;; + esac + + case $lt_cv_dlopen_self in + yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;; + *) enable_dlopen_self=unknown ;; + esac + + case $lt_cv_dlopen_self_static in + yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;; + *) enable_dlopen_self_static=unknown ;; + esac +fi + + + + + + + + + + + + + + + + + +striplib= +old_striplib= +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether stripping libraries is possible" >&5 +$as_echo_n "checking whether stripping libraries is possible... " >&6; } +if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then + test -z "$old_striplib" && old_striplib="$STRIP --strip-debug" + test -z "$striplib" && striplib="$STRIP --strip-unneeded" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +else +# FIXME - insert some real tests, host_os isn't really good enough + case $host_os in + darwin*) + if test -n "$STRIP"; then + striplib="$STRIP -x" + old_striplib="$STRIP -S" + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + fi + ;; + *) + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + ;; + esac +fi + + + + + + + + + + + + + # Report what library types will actually be built + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if libtool supports shared libraries" >&5 +$as_echo_n "checking if libtool supports shared libraries... " >&6; } + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $can_build_shared" >&5 +$as_echo "$can_build_shared" >&6; } + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build shared libraries" >&5 +$as_echo_n "checking whether to build shared libraries... " >&6; } + test no = "$can_build_shared" && enable_shared=no + + # On AIX, shared libraries and static libraries use the same namespace, and + # are all built from PIC. + case $host_os in + aix3*) + test yes = "$enable_shared" && enable_static=no + if test -n "$RANLIB"; then + archive_cmds="$archive_cmds~\$RANLIB \$lib" + postinstall_cmds='$RANLIB $lib' + fi + ;; + + aix[4-9]*) + if test ia64 != "$host_cpu"; then + case $enable_shared,$with_aix_soname,$aix_use_runtimelinking in + yes,aix,yes) ;; # shared object as lib.so file only + yes,svr4,*) ;; # shared object as lib.so archive member only + yes,*) enable_static=no ;; # shared object in lib.a archive as well + esac + fi + ;; + esac + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_shared" >&5 +$as_echo "$enable_shared" >&6; } + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build static libraries" >&5 +$as_echo_n "checking whether to build static libraries... " >&6; } + # Make sure either enable_shared or enable_static is yes. + test yes = "$enable_shared" || enable_static=yes + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_static" >&5 +$as_echo "$enable_static" >&6; } + + + + +fi +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + +CC=$lt_save_CC + + if test -n "$CXX" && ( test no != "$CXX" && + ( (test g++ = "$CXX" && `g++ -v >/dev/null 2>&1` ) || + (test g++ != "$CXX"))); then + ac_ext=cpp +ac_cpp='$CXXCPP $CPPFLAGS' +ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_cxx_compiler_gnu +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C++ preprocessor" >&5 +$as_echo_n "checking how to run the C++ preprocessor... " >&6; } +if test -z "$CXXCPP"; then + if ${ac_cv_prog_CXXCPP+:} false; then : + $as_echo_n "(cached) " >&6 +else + # Double quotes because CXXCPP needs to be expanded + for CXXCPP in "$CXX -E" "/lib/cpp" + do + ac_preproc_ok=false +for ac_cxx_preproc_warn_flag in '' yes +do + # Use a header file that comes with gcc, so configuring glibc + # with a fresh cross-compiler works. + # Prefer to if __STDC__ is defined, since + # exists even on freestanding compilers. + # On the NeXT, cc -E runs the code through the compiler's parser, + # not just through cpp. "Syntax error" is here to catch this case. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#ifdef __STDC__ +# include +#else +# include +#endif + Syntax error +_ACEOF +if ac_fn_cxx_try_cpp "$LINENO"; then : + +else + # Broken: fails on valid input. +continue +fi +rm -f conftest.err conftest.i conftest.$ac_ext + + # OK, works on sane cases. Now check whether nonexistent headers + # can be detected and how. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +_ACEOF +if ac_fn_cxx_try_cpp "$LINENO"; then : + # Broken: success on invalid input. +continue +else + # Passes both tests. +ac_preproc_ok=: +break +fi +rm -f conftest.err conftest.i conftest.$ac_ext + +done +# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped. +rm -f conftest.i conftest.err conftest.$ac_ext +if $ac_preproc_ok; then : + break +fi + + done + ac_cv_prog_CXXCPP=$CXXCPP + +fi + CXXCPP=$ac_cv_prog_CXXCPP +else + ac_cv_prog_CXXCPP=$CXXCPP +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CXXCPP" >&5 +$as_echo "$CXXCPP" >&6; } +ac_preproc_ok=false +for ac_cxx_preproc_warn_flag in '' yes +do + # Use a header file that comes with gcc, so configuring glibc + # with a fresh cross-compiler works. + # Prefer to if __STDC__ is defined, since + # exists even on freestanding compilers. + # On the NeXT, cc -E runs the code through the compiler's parser, + # not just through cpp. "Syntax error" is here to catch this case. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#ifdef __STDC__ +# include +#else +# include +#endif + Syntax error +_ACEOF +if ac_fn_cxx_try_cpp "$LINENO"; then : + +else + # Broken: fails on valid input. +continue +fi +rm -f conftest.err conftest.i conftest.$ac_ext + + # OK, works on sane cases. Now check whether nonexistent headers + # can be detected and how. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +_ACEOF +if ac_fn_cxx_try_cpp "$LINENO"; then : + # Broken: success on invalid input. +continue +else + # Passes both tests. +ac_preproc_ok=: +break +fi +rm -f conftest.err conftest.i conftest.$ac_ext + +done +# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped. +rm -f conftest.i conftest.err conftest.$ac_ext +if $ac_preproc_ok; then : + +else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "C++ preprocessor \"$CXXCPP\" fails sanity check +See \`config.log' for more details" "$LINENO" 5; } +fi + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + +else + _lt_caught_CXX_error=yes +fi + +ac_ext=cpp +ac_cpp='$CXXCPP $CPPFLAGS' +ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_cxx_compiler_gnu + +archive_cmds_need_lc_CXX=no +allow_undefined_flag_CXX= +always_export_symbols_CXX=no +archive_expsym_cmds_CXX= +compiler_needs_object_CXX=no +export_dynamic_flag_spec_CXX= +hardcode_direct_CXX=no +hardcode_direct_absolute_CXX=no +hardcode_libdir_flag_spec_CXX= +hardcode_libdir_separator_CXX= +hardcode_minus_L_CXX=no +hardcode_shlibpath_var_CXX=unsupported +hardcode_automatic_CXX=no +inherit_rpath_CXX=no +module_cmds_CXX= +module_expsym_cmds_CXX= +link_all_deplibs_CXX=unknown +old_archive_cmds_CXX=$old_archive_cmds +reload_flag_CXX=$reload_flag +reload_cmds_CXX=$reload_cmds +no_undefined_flag_CXX= +whole_archive_flag_spec_CXX= +enable_shared_with_static_runtimes_CXX=no + +# Source file extension for C++ test sources. +ac_ext=cpp + +# Object file extension for compiled C++ test sources. +objext=o +objext_CXX=$objext + +# No sense in running all these tests if we already determined that +# the CXX compiler isn't working. Some variables (like enable_shared) +# are currently assumed to apply to all compilers on this platform, +# and will be corrupted by setting them based on a non-working compiler. +if test yes != "$_lt_caught_CXX_error"; then + # Code to be used in simple compile tests + lt_simple_compile_test_code="int some_variable = 0;" + + # Code to be used in simple link tests + lt_simple_link_test_code='int main(int, char *[]) { return(0); }' + + # ltmain only uses $CC for tagged configurations so make sure $CC is set. + + + + + + +# If no C compiler was specified, use CC. +LTCC=${LTCC-"$CC"} + +# If no C compiler flags were specified, use CFLAGS. +LTCFLAGS=${LTCFLAGS-"$CFLAGS"} + +# Allow CC to be a program name with arguments. +compiler=$CC + + + # save warnings/boilerplate of simple test code + ac_outfile=conftest.$ac_objext +echo "$lt_simple_compile_test_code" >conftest.$ac_ext +eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err +_lt_compiler_boilerplate=`cat conftest.err` +$RM conftest* + + ac_outfile=conftest.$ac_objext +echo "$lt_simple_link_test_code" >conftest.$ac_ext +eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err +_lt_linker_boilerplate=`cat conftest.err` +$RM -r conftest* + + + # Allow CC to be a program name with arguments. + lt_save_CC=$CC + lt_save_CFLAGS=$CFLAGS + lt_save_LD=$LD + lt_save_GCC=$GCC + GCC=$GXX + lt_save_with_gnu_ld=$with_gnu_ld + lt_save_path_LD=$lt_cv_path_LD + if test -n "${lt_cv_prog_gnu_ldcxx+set}"; then + lt_cv_prog_gnu_ld=$lt_cv_prog_gnu_ldcxx + else + $as_unset lt_cv_prog_gnu_ld + fi + if test -n "${lt_cv_path_LDCXX+set}"; then + lt_cv_path_LD=$lt_cv_path_LDCXX + else + $as_unset lt_cv_path_LD + fi + test -z "${LDCXX+set}" || LD=$LDCXX + CC=${CXX-"c++"} + CFLAGS=$CXXFLAGS + compiler=$CC + compiler_CXX=$CC + func_cc_basename $compiler +cc_basename=$func_cc_basename_result + + + if test -n "$compiler"; then + # We don't want -fno-exception when compiling C++ code, so set the + # no_builtin_flag separately + if test yes = "$GXX"; then + lt_prog_compiler_no_builtin_flag_CXX=' -fno-builtin' + else + lt_prog_compiler_no_builtin_flag_CXX= + fi + + if test yes = "$GXX"; then + # Set up default GNU C++ configuration + + + +# Check whether --with-gnu-ld was given. +if test "${with_gnu_ld+set}" = set; then : + withval=$with_gnu_ld; test no = "$withval" || with_gnu_ld=yes +else + with_gnu_ld=no +fi + +ac_prog=ld +if test yes = "$GCC"; then + # Check if gcc -print-prog-name=ld gives a path. + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld used by $CC" >&5 +$as_echo_n "checking for ld used by $CC... " >&6; } + case $host in + *-*-mingw*) + # gcc leaves a trailing carriage return, which upsets mingw + ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; + *) + ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; + esac + case $ac_prog in + # Accept absolute paths. + [\\/]* | ?:[\\/]*) + re_direlt='/[^/][^/]*/\.\./' + # Canonicalize the pathname of ld + ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'` + while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do + ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"` + done + test -z "$LD" && LD=$ac_prog + ;; + "") + # If it fails, then pretend we aren't using GCC. + ac_prog=ld + ;; + *) + # If it is relative, then search for the first ld in PATH. + with_gnu_ld=unknown + ;; + esac +elif test yes = "$with_gnu_ld"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5 +$as_echo_n "checking for GNU ld... " >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5 +$as_echo_n "checking for non-GNU ld... " >&6; } +fi +if ${lt_cv_path_LD+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -z "$LD"; then + lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR + for ac_dir in $PATH; do + IFS=$lt_save_ifs + test -z "$ac_dir" && ac_dir=. + if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then + lt_cv_path_LD=$ac_dir/$ac_prog + # Check to see if the program is GNU ld. I'd rather use --version, + # but apparently some variants of GNU ld only accept -v. + # Break only if it was the GNU/non-GNU ld that we prefer. + case `"$lt_cv_path_LD" -v 2>&1 &5 +$as_echo "$LD" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi +test -z "$LD" && as_fn_error $? "no acceptable ld found in \$PATH" "$LINENO" 5 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5 +$as_echo_n "checking if the linker ($LD) is GNU ld... " >&6; } +if ${lt_cv_prog_gnu_ld+:} false; then : + $as_echo_n "(cached) " >&6 +else + # I'd rather use --version here, but apparently some GNU lds only accept -v. +case `$LD -v 2>&1 &5 +$as_echo "$lt_cv_prog_gnu_ld" >&6; } +with_gnu_ld=$lt_cv_prog_gnu_ld + + + + + + + + # Check if GNU C++ uses GNU ld as the underlying linker, since the + # archiving commands below assume that GNU ld is being used. + if test yes = "$with_gnu_ld"; then + archive_cmds_CXX='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib' + archive_expsym_cmds_CXX='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + + hardcode_libdir_flag_spec_CXX='$wl-rpath $wl$libdir' + export_dynamic_flag_spec_CXX='$wl--export-dynamic' + + # If archive_cmds runs LD, not CC, wlarc should be empty + # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to + # investigate it a little bit more. (MM) + wlarc='$wl' + + # ancient GNU ld didn't support --whole-archive et. al. + if eval "`$CC -print-prog-name=ld` --help 2>&1" | + $GREP 'no-whole-archive' > /dev/null; then + whole_archive_flag_spec_CXX=$wlarc'--whole-archive$convenience '$wlarc'--no-whole-archive' + else + whole_archive_flag_spec_CXX= + fi + else + with_gnu_ld=no + wlarc= + + # A generic and very simple default shared library creation + # command for GNU C++ for the case where it uses the native + # linker, instead of GNU ld. If possible, this setting should + # overridden to take advantage of the native linker features on + # the platform it is being used on. + archive_cmds_CXX='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib' + fi + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"' + + else + GXX=no + with_gnu_ld=no + wlarc= + fi + + # PORTME: fill in a description of your system's C++ link characteristics + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $compiler linker ($LD) supports shared libraries" >&5 +$as_echo_n "checking whether the $compiler linker ($LD) supports shared libraries... " >&6; } + ld_shlibs_CXX=yes + case $host_os in + aix3*) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + aix[4-9]*) + if test ia64 = "$host_cpu"; then + # On IA64, the linker does run time linking by default, so we don't + # have to do anything special. + aix_use_runtimelinking=no + exp_sym_flag='-Bexport' + no_entry_flag= + else + aix_use_runtimelinking=no + + # Test if we are trying to use run time linking or normal + # AIX style linking. If -brtl is somewhere in LDFLAGS, we + # have runtime linking enabled, and use it for executables. + # For shared libraries, we enable/disable runtime linking + # depending on the kind of the shared library created - + # when "with_aix_soname,aix_use_runtimelinking" is: + # "aix,no" lib.a(lib.so.V) shared, rtl:no, for executables + # "aix,yes" lib.so shared, rtl:yes, for executables + # lib.a static archive + # "both,no" lib.so.V(shr.o) shared, rtl:yes + # lib.a(lib.so.V) shared, rtl:no, for executables + # "both,yes" lib.so.V(shr.o) shared, rtl:yes, for executables + # lib.a(lib.so.V) shared, rtl:no + # "svr4,*" lib.so.V(shr.o) shared, rtl:yes, for executables + # lib.a static archive + case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*) + for ld_flag in $LDFLAGS; do + case $ld_flag in + *-brtl*) + aix_use_runtimelinking=yes + break + ;; + esac + done + if test svr4,no = "$with_aix_soname,$aix_use_runtimelinking"; then + # With aix-soname=svr4, we create the lib.so.V shared archives only, + # so we don't have lib.a shared libs to link our executables. + # We have to force runtime linking in this case. + aix_use_runtimelinking=yes + LDFLAGS="$LDFLAGS -Wl,-brtl" + fi + ;; + esac + + exp_sym_flag='-bexport' + no_entry_flag='-bnoentry' + fi + + # When large executables or shared objects are built, AIX ld can + # have problems creating the table of contents. If linking a library + # or program results in "error TOC overflow" add -mminimal-toc to + # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not + # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS. + + archive_cmds_CXX='' + hardcode_direct_CXX=yes + hardcode_direct_absolute_CXX=yes + hardcode_libdir_separator_CXX=':' + link_all_deplibs_CXX=yes + file_list_spec_CXX='$wl-f,' + case $with_aix_soname,$aix_use_runtimelinking in + aix,*) ;; # no import file + svr4,* | *,yes) # use import file + # The Import File defines what to hardcode. + hardcode_direct_CXX=no + hardcode_direct_absolute_CXX=no + ;; + esac + + if test yes = "$GXX"; then + case $host_os in aix4.[012]|aix4.[012].*) + # We only want to do this on AIX 4.2 and lower, the check + # below for broken collect2 doesn't work under 4.3+ + collect2name=`$CC -print-prog-name=collect2` + if test -f "$collect2name" && + strings "$collect2name" | $GREP resolve_lib_name >/dev/null + then + # We have reworked collect2 + : + else + # We have old collect2 + hardcode_direct_CXX=unsupported + # It fails to find uninstalled libraries when the uninstalled + # path is not listed in the libpath. Setting hardcode_minus_L + # to unsupported forces relinking + hardcode_minus_L_CXX=yes + hardcode_libdir_flag_spec_CXX='-L$libdir' + hardcode_libdir_separator_CXX= + fi + esac + shared_flag='-shared' + if test yes = "$aix_use_runtimelinking"; then + shared_flag=$shared_flag' $wl-G' + fi + # Need to ensure runtime linking is disabled for the traditional + # shared library, or the linker may eventually find shared libraries + # /with/ Import File - we do not want to mix them. + shared_flag_aix='-shared' + shared_flag_svr4='-shared $wl-G' + else + # not using gcc + if test ia64 = "$host_cpu"; then + # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release + # chokes on -Wl,-G. The following line is correct: + shared_flag='-G' + else + if test yes = "$aix_use_runtimelinking"; then + shared_flag='$wl-G' + else + shared_flag='$wl-bM:SRE' + fi + shared_flag_aix='$wl-bM:SRE' + shared_flag_svr4='$wl-G' + fi + fi + + export_dynamic_flag_spec_CXX='$wl-bexpall' + # It seems that -bexpall does not export symbols beginning with + # underscore (_), so it is better to generate a list of symbols to + # export. + always_export_symbols_CXX=yes + if test aix,yes = "$with_aix_soname,$aix_use_runtimelinking"; then + # Warning - without using the other runtime loading flags (-brtl), + # -berok will link without error, but may produce a broken library. + # The "-G" linker flag allows undefined symbols. + no_undefined_flag_CXX='-bernotok' + # Determine the default libpath from the value encoded in an empty + # executable. + if test set = "${lt_cv_aix_libpath+set}"; then + aix_libpath=$lt_cv_aix_libpath +else + if ${lt_cv_aix_libpath__CXX+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_cxx_try_link "$LINENO"; then : + + lt_aix_libpath_sed=' + /Import File Strings/,/^$/ { + /^0/ { + s/^0 *\([^ ]*\) *$/\1/ + p + } + }' + lt_cv_aix_libpath__CXX=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` + # Check for a 64-bit object if we didn't find anything. + if test -z "$lt_cv_aix_libpath__CXX"; then + lt_cv_aix_libpath__CXX=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` + fi +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + if test -z "$lt_cv_aix_libpath__CXX"; then + lt_cv_aix_libpath__CXX=/usr/lib:/lib + fi + +fi + + aix_libpath=$lt_cv_aix_libpath__CXX +fi + + hardcode_libdir_flag_spec_CXX='$wl-blibpath:$libdir:'"$aix_libpath" + + archive_expsym_cmds_CXX='$CC -o $output_objdir/$soname $libobjs $deplibs $wl'$no_entry_flag' $compiler_flags `if test -n "$allow_undefined_flag"; then func_echo_all "$wl$allow_undefined_flag"; else :; fi` $wl'$exp_sym_flag:\$export_symbols' '$shared_flag + else + if test ia64 = "$host_cpu"; then + hardcode_libdir_flag_spec_CXX='$wl-R $libdir:/usr/lib:/lib' + allow_undefined_flag_CXX="-z nodefs" + archive_expsym_cmds_CXX="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\$wl$no_entry_flag"' $compiler_flags $wl$allow_undefined_flag '"\$wl$exp_sym_flag:\$export_symbols" + else + # Determine the default libpath from the value encoded in an + # empty executable. + if test set = "${lt_cv_aix_libpath+set}"; then + aix_libpath=$lt_cv_aix_libpath +else + if ${lt_cv_aix_libpath__CXX+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_cxx_try_link "$LINENO"; then : + + lt_aix_libpath_sed=' + /Import File Strings/,/^$/ { + /^0/ { + s/^0 *\([^ ]*\) *$/\1/ + p + } + }' + lt_cv_aix_libpath__CXX=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` + # Check for a 64-bit object if we didn't find anything. + if test -z "$lt_cv_aix_libpath__CXX"; then + lt_cv_aix_libpath__CXX=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` + fi +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + if test -z "$lt_cv_aix_libpath__CXX"; then + lt_cv_aix_libpath__CXX=/usr/lib:/lib + fi + +fi + + aix_libpath=$lt_cv_aix_libpath__CXX +fi + + hardcode_libdir_flag_spec_CXX='$wl-blibpath:$libdir:'"$aix_libpath" + # Warning - without using the other run time loading flags, + # -berok will link without error, but may produce a broken library. + no_undefined_flag_CXX=' $wl-bernotok' + allow_undefined_flag_CXX=' $wl-berok' + if test yes = "$with_gnu_ld"; then + # We only use this code for GNU lds that support --whole-archive. + whole_archive_flag_spec_CXX='$wl--whole-archive$convenience $wl--no-whole-archive' + else + # Exported symbols can be pulled into shared objects from archives + whole_archive_flag_spec_CXX='$convenience' + fi + archive_cmds_need_lc_CXX=yes + archive_expsym_cmds_CXX='$RM -r $output_objdir/$realname.d~$MKDIR $output_objdir/$realname.d' + # -brtl affects multiple linker settings, -berok does not and is overridden later + compiler_flags_filtered='`func_echo_all "$compiler_flags " | $SED -e "s%-brtl\\([, ]\\)%-berok\\1%g"`' + if test svr4 != "$with_aix_soname"; then + # This is similar to how AIX traditionally builds its shared + # libraries. Need -bnortl late, we may have -brtl in LDFLAGS. + archive_expsym_cmds_CXX="$archive_expsym_cmds_CXX"'~$CC '$shared_flag_aix' -o $output_objdir/$realname.d/$soname $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$realname.d/$soname' + fi + if test aix != "$with_aix_soname"; then + archive_expsym_cmds_CXX="$archive_expsym_cmds_CXX"'~$CC '$shared_flag_svr4' -o $output_objdir/$realname.d/$shared_archive_member_spec.o $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$STRIP -e $output_objdir/$realname.d/$shared_archive_member_spec.o~( func_echo_all "#! $soname($shared_archive_member_spec.o)"; if test shr_64 = "$shared_archive_member_spec"; then func_echo_all "# 64"; else func_echo_all "# 32"; fi; cat $export_symbols ) > $output_objdir/$realname.d/$shared_archive_member_spec.imp~$AR $AR_FLAGS $output_objdir/$soname $output_objdir/$realname.d/$shared_archive_member_spec.o $output_objdir/$realname.d/$shared_archive_member_spec.imp' + else + # used by -dlpreopen to get the symbols + archive_expsym_cmds_CXX="$archive_expsym_cmds_CXX"'~$MV $output_objdir/$realname.d/$soname $output_objdir' + fi + archive_expsym_cmds_CXX="$archive_expsym_cmds_CXX"'~$RM -r $output_objdir/$realname.d' + fi + fi + ;; + + beos*) + if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then + allow_undefined_flag_CXX=unsupported + # Joseph Beckenbach says some releases of gcc + # support --undefined. This deserves some investigation. FIXME + archive_cmds_CXX='$CC -nostart $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + else + ld_shlibs_CXX=no + fi + ;; + + chorus*) + case $cc_basename in + *) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + esac + ;; + + cygwin* | mingw* | pw32* | cegcc*) + case $GXX,$cc_basename in + ,cl* | no,cl*) + # Native MSVC + # hardcode_libdir_flag_spec is actually meaningless, as there is + # no search path for DLLs. + hardcode_libdir_flag_spec_CXX=' ' + allow_undefined_flag_CXX=unsupported + always_export_symbols_CXX=yes + file_list_spec_CXX='@' + # Tell ltmain to make .lib files, not .a files. + libext=lib + # Tell ltmain to make .dll files, not .so files. + shrext_cmds=.dll + # FIXME: Setting linknames here is a bad hack. + archive_cmds_CXX='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~linknames=' + archive_expsym_cmds_CXX='if test DEF = "`$SED -n -e '\''s/^[ ]*//'\'' -e '\''/^\(;.*\)*$/d'\'' -e '\''s/^\(EXPORTS\|LIBRARY\)\([ ].*\)*$/DEF/p'\'' -e q $export_symbols`" ; then + cp "$export_symbols" "$output_objdir/$soname.def"; + echo "$tool_output_objdir$soname.def" > "$output_objdir/$soname.exp"; + else + $SED -e '\''s/^/-link -EXPORT:/'\'' < $export_symbols > $output_objdir/$soname.exp; + fi~ + $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~ + linknames=' + # The linker will not automatically build a static lib if we build a DLL. + # _LT_TAGVAR(old_archive_from_new_cmds, CXX)='true' + enable_shared_with_static_runtimes_CXX=yes + # Don't use ranlib + old_postinstall_cmds_CXX='chmod 644 $oldlib' + postlink_cmds_CXX='lt_outputfile="@OUTPUT@"~ + lt_tool_outputfile="@TOOL_OUTPUT@"~ + case $lt_outputfile in + *.exe|*.EXE) ;; + *) + lt_outputfile=$lt_outputfile.exe + lt_tool_outputfile=$lt_tool_outputfile.exe + ;; + esac~ + func_to_tool_file "$lt_outputfile"~ + if test : != "$MANIFEST_TOOL" && test -f "$lt_outputfile.manifest"; then + $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1; + $RM "$lt_outputfile.manifest"; + fi' + ;; + *) + # g++ + # _LT_TAGVAR(hardcode_libdir_flag_spec, CXX) is actually meaningless, + # as there is no search path for DLLs. + hardcode_libdir_flag_spec_CXX='-L$libdir' + export_dynamic_flag_spec_CXX='$wl--export-all-symbols' + allow_undefined_flag_CXX=unsupported + always_export_symbols_CXX=no + enable_shared_with_static_runtimes_CXX=yes + + if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then + archive_cmds_CXX='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib' + # If the export-symbols file already is a .def file, use it as + # is; otherwise, prepend EXPORTS... + archive_expsym_cmds_CXX='if test DEF = "`$SED -n -e '\''s/^[ ]*//'\'' -e '\''/^\(;.*\)*$/d'\'' -e '\''s/^\(EXPORTS\|LIBRARY\)\([ ].*\)*$/DEF/p'\'' -e q $export_symbols`" ; then + cp $export_symbols $output_objdir/$soname.def; + else + echo EXPORTS > $output_objdir/$soname.def; + cat $export_symbols >> $output_objdir/$soname.def; + fi~ + $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib' + else + ld_shlibs_CXX=no + fi + ;; + esac + ;; + darwin* | rhapsody*) + + + archive_cmds_need_lc_CXX=no + hardcode_direct_CXX=no + hardcode_automatic_CXX=yes + hardcode_shlibpath_var_CXX=unsupported + if test yes = "$lt_cv_ld_force_load"; then + whole_archive_flag_spec_CXX='`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience $wl-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`' + + else + whole_archive_flag_spec_CXX='' + fi + link_all_deplibs_CXX=yes + allow_undefined_flag_CXX=$_lt_dar_allow_undefined + case $cc_basename in + ifort*|nagfor*) _lt_dar_can_shared=yes ;; + *) _lt_dar_can_shared=$GCC ;; + esac + if test yes = "$_lt_dar_can_shared"; then + output_verbose_link_cmd=func_echo_all + archive_cmds_CXX="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dsymutil" + module_cmds_CXX="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dsymutil" + archive_expsym_cmds_CXX="sed 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dar_export_syms$_lt_dsymutil" + module_expsym_cmds_CXX="sed -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil" + if test yes != "$lt_cv_apple_cc_single_mod"; 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then + prefix_cmds="$prefix_cmds -e 1d"; + fi~ + prefix_cmds="$prefix_cmds -e \"s/^\(.*\)$/_\1/g\""~ + cat $export_symbols | $prefix_cmds >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + old_archive_From_new_cmds_CXX='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def' + enable_shared_with_static_runtimes_CXX=yes + ;; + + dgux*) + case $cc_basename in + ec++*) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + ghcx*) + # Green Hills C++ Compiler + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + *) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + esac + ;; + + freebsd2.*) + # C++ shared libraries reported to be fairly broken before + # switch to ELF + ld_shlibs_CXX=no + ;; + + freebsd-elf*) + archive_cmds_need_lc_CXX=no + ;; + + freebsd* | dragonfly*) + # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF + # conventions + ld_shlibs_CXX=yes + ;; + + haiku*) + archive_cmds_CXX='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + link_all_deplibs_CXX=yes + ;; + + hpux9*) + hardcode_libdir_flag_spec_CXX='$wl+b $wl$libdir' + hardcode_libdir_separator_CXX=: + export_dynamic_flag_spec_CXX='$wl-E' + hardcode_direct_CXX=yes + hardcode_minus_L_CXX=yes # Not in the search PATH, + # but as the default + # location of the library. + + case $cc_basename in + CC*) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + aCC*) + archive_cmds_CXX='$RM $output_objdir/$soname~$CC -b $wl+b $wl$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib' + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + # + # There doesn't appear to be a way to prevent this compiler from + # explicitly linking system object files so we need to strip them + # from the output so that they don't get included in the library + # dependencies. + output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; 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To avoid this, we pick a random, + # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link + # time. 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(KAI) C++ Compiler + + # KCC will only create a shared library if the output file + # ends with ".so" (or ".sl" for HP-UX), so rename the library + # to its proper name (with version) after linking. + archive_cmds_CXX='tempext=`echo $shared_ext | $SED -e '\''s/\([^()0-9A-Za-z{}]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\$tempext\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib' + archive_expsym_cmds_CXX='tempext=`echo $shared_ext | $SED -e '\''s/\([^()0-9A-Za-z{}]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\$tempext\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib $wl-retain-symbols-file,$export_symbols; mv \$templib $lib' + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + # + # There doesn't appear to be a way to prevent this compiler from + # explicitly linking system object files so we need to strip them + # from the output so that they don't get included in the library + # dependencies. + output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 | $GREP "ld"`; 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for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + compiler_needs_object_CXX=yes + + # Not sure whether something based on + # $CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 + # would be better. + output_verbose_link_cmd='func_echo_all' + + # Archives containing C++ object files must be created using + # "CC -xar", where "CC" is the Sun C++ compiler. This is + # necessary to make sure instantiated templates are included + # in the archive. + old_archive_cmds_CXX='$CC -xar -o $oldlib $oldobjs' + ;; + esac + ;; + esac + ;; + + lynxos*) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + + m88k*) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + + mvs*) + case $cc_basename in + cxx*) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + *) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + esac + ;; + + netbsd*) + if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then + archive_cmds_CXX='$LD -Bshareable -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags' + wlarc= + hardcode_libdir_flag_spec_CXX='-R$libdir' + hardcode_direct_CXX=yes + hardcode_shlibpath_var_CXX=no + fi + # Workaround some broken pre-1.5 toolchains + output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP conftest.$objext | $SED -e "s:-lgcc -lc -lgcc::"' + ;; + + *nto* | *qnx*) + ld_shlibs_CXX=yes + ;; + + openbsd* | bitrig*) + if test -f /usr/libexec/ld.so; then + hardcode_direct_CXX=yes + hardcode_shlibpath_var_CXX=no + hardcode_direct_absolute_CXX=yes + archive_cmds_CXX='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib' + hardcode_libdir_flag_spec_CXX='$wl-rpath,$libdir' + if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`"; then + archive_expsym_cmds_CXX='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-retain-symbols-file,$export_symbols -o $lib' + export_dynamic_flag_spec_CXX='$wl-E' + whole_archive_flag_spec_CXX=$wlarc'--whole-archive$convenience '$wlarc'--no-whole-archive' + fi + output_verbose_link_cmd=func_echo_all + else + ld_shlibs_CXX=no + fi + ;; + + osf3* | osf4* | osf5*) + case $cc_basename in + KCC*) + # Kuck and Associates, Inc. (KAI) C++ Compiler + + # KCC will only create a shared library if the output file + # ends with ".so" (or ".sl" for HP-UX), so rename the library + # to its proper name (with version) after linking. + archive_cmds_CXX='tempext=`echo $shared_ext | $SED -e '\''s/\([^()0-9A-Za-z{}]\)/\\\\\1/g'\''`; templib=`echo "$lib" | $SED -e "s/\$tempext\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib' + + hardcode_libdir_flag_spec_CXX='$wl-rpath,$libdir' + hardcode_libdir_separator_CXX=: + + # Archives containing C++ object files must be created using + # the KAI C++ compiler. + case $host in + osf3*) old_archive_cmds_CXX='$CC -Bstatic -o $oldlib $oldobjs' ;; + *) old_archive_cmds_CXX='$CC -o $oldlib $oldobjs' ;; + esac + ;; + RCC*) + # Rational C++ 2.4.1 + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + cxx*) + case $host in + osf3*) + allow_undefined_flag_CXX=' $wl-expect_unresolved $wl\*' + archive_cmds_CXX='$CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $soname `test -n "$verstring" && func_echo_all "$wl-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' + hardcode_libdir_flag_spec_CXX='$wl-rpath $wl$libdir' + ;; 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+ esac + ;; + + psos*) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + + sunos4*) + case $cc_basename in + CC*) + # Sun C++ 4.x + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + lcc*) + # Lucid + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + *) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + esac + ;; + + solaris*) + case $cc_basename in + CC* | sunCC*) + # Sun C++ 4.2, 5.x and Centerline C++ + archive_cmds_need_lc_CXX=yes + no_undefined_flag_CXX=' -zdefs' + archive_cmds_CXX='$CC -G$allow_undefined_flag -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' + archive_expsym_cmds_CXX='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $CC -G$allow_undefined_flag $wl-M $wl$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp' + + hardcode_libdir_flag_spec_CXX='-R$libdir' + hardcode_shlibpath_var_CXX=no + case $host_os in + solaris2.[0-5] | solaris2.[0-5].*) ;; + *) + # The compiler driver will combine and reorder linker options, + # but understands '-z linker_flag'. + # Supported since Solaris 2.6 (maybe 2.5.1?) + whole_archive_flag_spec_CXX='-z allextract$convenience -z defaultextract' + ;; + esac + link_all_deplibs_CXX=yes + + output_verbose_link_cmd='func_echo_all' + + # Archives containing C++ object files must be created using + # "CC -xar", where "CC" is the Sun C++ compiler. This is + # necessary to make sure instantiated templates are included + # in the archive. + old_archive_cmds_CXX='$CC -xar -o $oldlib $oldobjs' + ;; + gcx*) + # Green Hills C++ Compiler + archive_cmds_CXX='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib' + + # The C++ compiler must be used to create the archive. + old_archive_cmds_CXX='$CC $LDFLAGS -archive -o $oldlib $oldobjs' + ;; + *) + # GNU C++ compiler with Solaris linker + if test yes,no = "$GXX,$with_gnu_ld"; then + no_undefined_flag_CXX=' $wl-z ${wl}defs' + if $CC --version | $GREP -v '^2\.7' > /dev/null; then + archive_cmds_CXX='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib' + archive_expsym_cmds_CXX='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $CC -shared $pic_flag -nostdlib $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp' + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"' + else + # g++ 2.7 appears to require '-G' NOT '-shared' on this + # platform. + archive_cmds_CXX='$CC -G -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib' + archive_expsym_cmds_CXX='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $CC -G -nostdlib $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp' + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"' + fi + + hardcode_libdir_flag_spec_CXX='$wl-R $wl$libdir' + case $host_os in + solaris2.[0-5] | solaris2.[0-5].*) ;; + *) + whole_archive_flag_spec_CXX='$wl-z ${wl}allextract$convenience $wl-z ${wl}defaultextract' + ;; + esac + fi + ;; + esac + ;; + + sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*) + no_undefined_flag_CXX='$wl-z,text' + archive_cmds_need_lc_CXX=no + hardcode_shlibpath_var_CXX=no + runpath_var='LD_RUN_PATH' + + case $cc_basename in + CC*) + archive_cmds_CXX='$CC -G $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds_CXX='$CC -G $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + ;; + *) + archive_cmds_CXX='$CC -shared $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds_CXX='$CC -shared $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + ;; + esac + ;; + + sysv5* | sco3.2v5* | sco5v6*) + # Note: We CANNOT use -z defs as we might desire, because we do not + # link with -lc, and that would cause any symbols used from libc to + # always be unresolved, which means just about no library would + # ever link correctly. If we're not using GNU ld we use -z text + # though, which does catch some bad symbols but isn't as heavy-handed + # as -z defs. + no_undefined_flag_CXX='$wl-z,text' + allow_undefined_flag_CXX='$wl-z,nodefs' + archive_cmds_need_lc_CXX=no + hardcode_shlibpath_var_CXX=no + hardcode_libdir_flag_spec_CXX='$wl-R,$libdir' + hardcode_libdir_separator_CXX=':' + link_all_deplibs_CXX=yes + export_dynamic_flag_spec_CXX='$wl-Bexport' + runpath_var='LD_RUN_PATH' + + case $cc_basename in + CC*) + archive_cmds_CXX='$CC -G $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds_CXX='$CC -G $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + old_archive_cmds_CXX='$CC -Tprelink_objects $oldobjs~ + '"$old_archive_cmds_CXX" + reload_cmds_CXX='$CC -Tprelink_objects $reload_objs~ + '"$reload_cmds_CXX" + ;; + *) + archive_cmds_CXX='$CC -shared $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + archive_expsym_cmds_CXX='$CC -shared $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + ;; + esac + ;; + + tandem*) + case $cc_basename in + NCC*) + # NonStop-UX NCC 3.20 + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + *) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + esac + ;; + + vxworks*) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + + *) + # FIXME: insert proper C++ library support + ld_shlibs_CXX=no + ;; + esac + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ld_shlibs_CXX" >&5 +$as_echo "$ld_shlibs_CXX" >&6; } + test no = "$ld_shlibs_CXX" && can_build_shared=no + + GCC_CXX=$GXX + LD_CXX=$LD + + ## CAVEAT EMPTOR: + ## There is no encapsulation within the following macros, do not change + ## the running order or otherwise move them around unless you know exactly + ## what you are doing... + # Dependencies to place before and after the object being linked: +predep_objects_CXX= +postdep_objects_CXX= +predeps_CXX= +postdeps_CXX= +compiler_lib_search_path_CXX= + +cat > conftest.$ac_ext <<_LT_EOF +class Foo +{ +public: + Foo (void) { a = 0; } +private: + int a; +}; +_LT_EOF + + +_lt_libdeps_save_CFLAGS=$CFLAGS +case "$CC $CFLAGS " in #( +*\ -flto*\ *) CFLAGS="$CFLAGS -fno-lto" ;; +*\ -fwhopr*\ *) CFLAGS="$CFLAGS -fno-whopr" ;; +*\ -fuse-linker-plugin*\ *) CFLAGS="$CFLAGS -fno-use-linker-plugin" ;; +esac + +if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 + (eval $ac_compile) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + # Parse the compiler output and extract the necessary + # objects, libraries and library flags. + + # Sentinel used to keep track of whether or not we are before + # the conftest object file. + pre_test_object_deps_done=no + + for p in `eval "$output_verbose_link_cmd"`; do + case $prev$p in + + -L* | -R* | -l*) + # Some compilers place space between "-{L,R}" and the path. + # Remove the space. + if test x-L = "$p" || + test x-R = "$p"; then + prev=$p + continue + fi + + # Expand the sysroot to ease extracting the directories later. + if test -z "$prev"; then + case $p in + -L*) func_stripname_cnf '-L' '' "$p"; prev=-L; p=$func_stripname_result ;; + -R*) func_stripname_cnf '-R' '' "$p"; prev=-R; p=$func_stripname_result ;; + -l*) func_stripname_cnf '-l' '' "$p"; prev=-l; p=$func_stripname_result ;; + esac + fi + case $p in + =*) func_stripname_cnf '=' '' "$p"; p=$lt_sysroot$func_stripname_result ;; + esac + if test no = "$pre_test_object_deps_done"; then + case $prev in + -L | -R) + # Internal compiler library paths should come after those + # provided the user. The postdeps already come after the + # user supplied libs so there is no need to process them. + if test -z "$compiler_lib_search_path_CXX"; then + compiler_lib_search_path_CXX=$prev$p + else + compiler_lib_search_path_CXX="${compiler_lib_search_path_CXX} $prev$p" + fi + ;; + # The "-l" case would never come before the object being + # linked, so don't bother handling this case. + esac + else + if test -z "$postdeps_CXX"; then + postdeps_CXX=$prev$p + else + postdeps_CXX="${postdeps_CXX} $prev$p" + fi + fi + prev= + ;; + + *.lto.$objext) ;; # Ignore GCC LTO objects + *.$objext) + # This assumes that the test object file only shows up + # once in the compiler output. + if test "$p" = "conftest.$objext"; then + pre_test_object_deps_done=yes + continue + fi + + if test no = "$pre_test_object_deps_done"; then + if test -z "$predep_objects_CXX"; then + predep_objects_CXX=$p + else + predep_objects_CXX="$predep_objects_CXX $p" + fi + else + if test -z "$postdep_objects_CXX"; then + postdep_objects_CXX=$p + else + postdep_objects_CXX="$postdep_objects_CXX $p" + fi + fi + ;; + + *) ;; # Ignore the rest. + + esac + done + + # Clean up. + rm -f a.out a.exe +else + echo "libtool.m4: error: problem compiling CXX test program" +fi + +$RM -f confest.$objext +CFLAGS=$_lt_libdeps_save_CFLAGS + +# PORTME: override above test on systems where it is broken +case $host_os in +interix[3-9]*) + # Interix 3.5 installs completely hosed .la files for C++, so rather than + # hack all around it, let's just trust "g++" to DTRT. + predep_objects_CXX= + postdep_objects_CXX= + postdeps_CXX= + ;; +esac + + +case " $postdeps_CXX " in +*" -lc "*) archive_cmds_need_lc_CXX=no ;; +esac + compiler_lib_search_dirs_CXX= +if test -n "${compiler_lib_search_path_CXX}"; then + compiler_lib_search_dirs_CXX=`echo " ${compiler_lib_search_path_CXX}" | $SED -e 's! -L! !g' -e 's!^ !!'` +fi + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + lt_prog_compiler_wl_CXX= +lt_prog_compiler_pic_CXX= +lt_prog_compiler_static_CXX= + + + # C++ specific cases for pic, static, wl, etc. + if test yes = "$GXX"; then + lt_prog_compiler_wl_CXX='-Wl,' + lt_prog_compiler_static_CXX='-static' + + case $host_os in + aix*) + # All AIX code is PIC. + if test ia64 = "$host_cpu"; then + # AIX 5 now supports IA64 processor + lt_prog_compiler_static_CXX='-Bstatic' + fi + lt_prog_compiler_pic_CXX='-fPIC' + ;; + + amigaos*) + case $host_cpu in + powerpc) + # see comment about AmigaOS4 .so support + lt_prog_compiler_pic_CXX='-fPIC' + ;; + m68k) + # FIXME: we need at least 68020 code to build shared libraries, but + # adding the '-m68020' flag to GCC prevents building anything better, + # like '-m68040'. + lt_prog_compiler_pic_CXX='-m68020 -resident32 -malways-restore-a4' + ;; + esac + ;; + + beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*) + # PIC is the default for these OSes. + ;; + mingw* | cygwin* | os2* | pw32* | cegcc*) + # This hack is so that the source file can tell whether it is being + # built for inclusion in a dll (and should export symbols for example). + # Although the cygwin gcc ignores -fPIC, still need this for old-style + # (--disable-auto-import) libraries + lt_prog_compiler_pic_CXX='-DDLL_EXPORT' + case $host_os in + os2*) + lt_prog_compiler_static_CXX='$wl-static' + ;; + esac + ;; + darwin* | rhapsody*) + # PIC is the default on this platform + # Common symbols not allowed in MH_DYLIB files + lt_prog_compiler_pic_CXX='-fno-common' + ;; + *djgpp*) + # DJGPP does not support shared libraries at all + lt_prog_compiler_pic_CXX= + ;; + haiku*) + # PIC is the default for Haiku. + # The "-static" flag exists, but is broken. + lt_prog_compiler_static_CXX= + ;; + interix[3-9]*) + # Interix 3.x gcc -fpic/-fPIC options generate broken code. + # Instead, we relocate shared libraries at runtime. + ;; + sysv4*MP*) + if test -d /usr/nec; then + lt_prog_compiler_pic_CXX=-Kconform_pic + fi + ;; + hpux*) + # PIC is the default for 64-bit PA HP-UX, but not for 32-bit + # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag + # sets the default TLS model and affects inlining. + case $host_cpu in + hppa*64*) + ;; + *) + lt_prog_compiler_pic_CXX='-fPIC' + ;; + esac + ;; + *qnx* | *nto*) + # QNX uses GNU C++, but need to define -shared option too, otherwise + # it will coredump. + lt_prog_compiler_pic_CXX='-fPIC -shared' + ;; + *) + lt_prog_compiler_pic_CXX='-fPIC' + ;; + esac + else + case $host_os in + aix[4-9]*) + # All AIX code is PIC. + if test ia64 = "$host_cpu"; then + # AIX 5 now supports IA64 processor + lt_prog_compiler_static_CXX='-Bstatic' + else + lt_prog_compiler_static_CXX='-bnso -bI:/lib/syscalls.exp' + fi + ;; + chorus*) + case $cc_basename in + cxch68*) + # Green Hills C++ Compiler + # _LT_TAGVAR(lt_prog_compiler_static, CXX)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a" + ;; + esac + ;; + mingw* | cygwin* | os2* | pw32* | cegcc*) + # This hack is so that the source file can tell whether it is being + # built for inclusion in a dll (and should export symbols for example). + lt_prog_compiler_pic_CXX='-DDLL_EXPORT' + ;; + dgux*) + case $cc_basename in + ec++*) + lt_prog_compiler_pic_CXX='-KPIC' + ;; + ghcx*) + # Green Hills C++ Compiler + lt_prog_compiler_pic_CXX='-pic' + ;; + *) + ;; + esac + ;; + freebsd* | dragonfly*) + # FreeBSD uses GNU C++ + ;; + hpux9* | hpux10* | hpux11*) + case $cc_basename in + CC*) + lt_prog_compiler_wl_CXX='-Wl,' + lt_prog_compiler_static_CXX='$wl-a ${wl}archive' + if test ia64 != "$host_cpu"; then + lt_prog_compiler_pic_CXX='+Z' + fi + ;; + aCC*) + lt_prog_compiler_wl_CXX='-Wl,' + lt_prog_compiler_static_CXX='$wl-a ${wl}archive' + case $host_cpu in + hppa*64*|ia64*) + # +Z the default + ;; + *) + lt_prog_compiler_pic_CXX='+Z' + ;; + esac + ;; + *) + ;; + esac + ;; + interix*) + # This is c89, which is MS Visual C++ (no shared libs) + # Anyone wants to do a port? + ;; + irix5* | irix6* | nonstopux*) + case $cc_basename in + CC*) + lt_prog_compiler_wl_CXX='-Wl,' + lt_prog_compiler_static_CXX='-non_shared' + # CC pic flag -KPIC is the default. + ;; + *) + ;; + esac + ;; + linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) + case $cc_basename in + KCC*) + # KAI C++ Compiler + lt_prog_compiler_wl_CXX='--backend -Wl,' + lt_prog_compiler_pic_CXX='-fPIC' + ;; + ecpc* ) + # old Intel C++ for x86_64, which still supported -KPIC. + lt_prog_compiler_wl_CXX='-Wl,' + lt_prog_compiler_pic_CXX='-KPIC' + lt_prog_compiler_static_CXX='-static' + ;; + icpc* ) + # Intel C++, used to be incompatible with GCC. + # ICC 10 doesn't accept -KPIC any more. + lt_prog_compiler_wl_CXX='-Wl,' + lt_prog_compiler_pic_CXX='-fPIC' + lt_prog_compiler_static_CXX='-static' + ;; + pgCC* | pgcpp*) + # Portland Group C++ compiler + lt_prog_compiler_wl_CXX='-Wl,' + lt_prog_compiler_pic_CXX='-fpic' + lt_prog_compiler_static_CXX='-Bstatic' + ;; + cxx*) + # Compaq C++ + # Make sure the PIC flag is empty. It appears that all Alpha + # Linux and Compaq Tru64 Unix objects are PIC. + lt_prog_compiler_pic_CXX= + lt_prog_compiler_static_CXX='-non_shared' + ;; + xlc* | xlC* | bgxl[cC]* | mpixl[cC]*) + # IBM XL 8.0, 9.0 on PPC and BlueGene + lt_prog_compiler_wl_CXX='-Wl,' + lt_prog_compiler_pic_CXX='-qpic' + lt_prog_compiler_static_CXX='-qstaticlink' + ;; + *) + case `$CC -V 2>&1 | sed 5q` in + *Sun\ C*) + # Sun C++ 5.9 + lt_prog_compiler_pic_CXX='-KPIC' + lt_prog_compiler_static_CXX='-Bstatic' + lt_prog_compiler_wl_CXX='-Qoption ld ' + ;; + esac + ;; + esac + ;; + lynxos*) + ;; + m88k*) + ;; + mvs*) + case $cc_basename in + cxx*) + lt_prog_compiler_pic_CXX='-W c,exportall' + ;; + *) + ;; + esac + ;; + netbsd*) + ;; + *qnx* | *nto*) + # QNX uses GNU C++, but need to define -shared option too, otherwise + # it will coredump. + lt_prog_compiler_pic_CXX='-fPIC -shared' + ;; + osf3* | osf4* | osf5*) + case $cc_basename in + KCC*) + lt_prog_compiler_wl_CXX='--backend -Wl,' + ;; + RCC*) + # Rational C++ 2.4.1 + lt_prog_compiler_pic_CXX='-pic' + ;; + cxx*) + # Digital/Compaq C++ + lt_prog_compiler_wl_CXX='-Wl,' + # Make sure the PIC flag is empty. It appears that all Alpha + # Linux and Compaq Tru64 Unix objects are PIC. + lt_prog_compiler_pic_CXX= + lt_prog_compiler_static_CXX='-non_shared' + ;; + *) + ;; + esac + ;; + psos*) + ;; + solaris*) + case $cc_basename in + CC* | sunCC*) + # Sun C++ 4.2, 5.x and Centerline C++ + lt_prog_compiler_pic_CXX='-KPIC' + lt_prog_compiler_static_CXX='-Bstatic' + lt_prog_compiler_wl_CXX='-Qoption ld ' + ;; + gcx*) + # Green Hills C++ Compiler + lt_prog_compiler_pic_CXX='-PIC' + ;; + *) + ;; + esac + ;; + sunos4*) + case $cc_basename in + CC*) + # Sun C++ 4.x + lt_prog_compiler_pic_CXX='-pic' + lt_prog_compiler_static_CXX='-Bstatic' + ;; + lcc*) + # Lucid + lt_prog_compiler_pic_CXX='-pic' + ;; + *) + ;; + esac + ;; + sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*) + case $cc_basename in + CC*) + lt_prog_compiler_wl_CXX='-Wl,' + lt_prog_compiler_pic_CXX='-KPIC' + lt_prog_compiler_static_CXX='-Bstatic' + ;; + esac + ;; + tandem*) + case $cc_basename in + NCC*) + # NonStop-UX NCC 3.20 + lt_prog_compiler_pic_CXX='-KPIC' + ;; + *) + ;; + esac + ;; + vxworks*) + ;; + *) + lt_prog_compiler_can_build_shared_CXX=no + ;; + esac + fi + +case $host_os in + # For platforms that do not support PIC, -DPIC is meaningless: + *djgpp*) + lt_prog_compiler_pic_CXX= + ;; + *) + lt_prog_compiler_pic_CXX="$lt_prog_compiler_pic_CXX -DPIC" + ;; +esac + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5 +$as_echo_n "checking for $compiler option to produce PIC... " >&6; } +if ${lt_cv_prog_compiler_pic_CXX+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_prog_compiler_pic_CXX=$lt_prog_compiler_pic_CXX +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic_CXX" >&5 +$as_echo "$lt_cv_prog_compiler_pic_CXX" >&6; } +lt_prog_compiler_pic_CXX=$lt_cv_prog_compiler_pic_CXX + +# +# Check to make sure the PIC flag actually works. +# +if test -n "$lt_prog_compiler_pic_CXX"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler PIC flag $lt_prog_compiler_pic_CXX works" >&5 +$as_echo_n "checking if $compiler PIC flag $lt_prog_compiler_pic_CXX works... 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The import file would start with + # the line '#! .'. This would cause the generated library to + # depend on '.', always an invalid library. This was fixed in + # development snapshots of GCC prior to 3.0. + case $host_os in + aix4 | aix4.[01] | aix4.[01].*) + if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)' + echo ' yes ' + echo '#endif'; } | $CC -E - | $GREP yes > /dev/null; then + : + else + can_build_shared=no + fi + ;; + esac + # Using Import Files as archive members, it is possible to support + # filename-based versioning of shared library archives on AIX. While + # this would work for both with and without runtime linking, it will + # prevent static linking of such archives. So we do filename-based + # shared library versioning with .so extension only, which is used + # when both runtime linking and shared linking is enabled. + # Unfortunately, runtime linking may impact performance, so we do + # not want this to be the default eventually. Also, we use the + # versioned .so libs for executables only if there is the -brtl + # linker flag in LDFLAGS as well, or --with-aix-soname=svr4 only. + # To allow for filename-based versioning support, we need to create + # libNAME.so.V as an archive file, containing: + # *) an Import File, referring to the versioned filename of the + # archive as well as the shared archive member, telling the + # bitwidth (32 or 64) of that shared object, and providing the + # list of exported symbols of that shared object, eventually + # decorated with the 'weak' keyword + # *) the shared object with the F_LOADONLY flag set, to really avoid + # it being seen by the linker. + # At run time we better use the real file rather than another symlink, + # but for link time we create the symlink libNAME.so -> libNAME.so.V + + case $with_aix_soname,$aix_use_runtimelinking in + # AIX (on Power*) has no versioning support, so currently we cannot hardcode correct + # soname into executable. Probably we can add versioning support to + # collect2, so additional links can be useful in future. + aix,yes) # traditional libtool + dynamic_linker='AIX unversionable lib.so' + # If using run time linking (on AIX 4.2 or later) use lib.so + # instead of lib.a to let people know that these are not + # typical AIX shared libraries. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + ;; + aix,no) # traditional AIX only + dynamic_linker='AIX lib.a(lib.so.V)' + # We preserve .a as extension for shared libraries through AIX4.2 + # and later when we are not doing run time linking. + library_names_spec='$libname$release.a $libname.a' + soname_spec='$libname$release$shared_ext$major' + ;; + svr4,*) # full svr4 only + dynamic_linker="AIX lib.so.V($shared_archive_member_spec.o)" + library_names_spec='$libname$release$shared_ext$major $libname$shared_ext' + # We do not specify a path in Import Files, so LIBPATH fires. + shlibpath_overrides_runpath=yes + ;; + *,yes) # both, prefer svr4 + dynamic_linker="AIX lib.so.V($shared_archive_member_spec.o), lib.a(lib.so.V)" + library_names_spec='$libname$release$shared_ext$major $libname$shared_ext' + # unpreferred sharedlib libNAME.a needs extra handling + postinstall_cmds='test -n "$linkname" || linkname="$realname"~func_stripname "" ".so" "$linkname"~$install_shared_prog "$dir/$func_stripname_result.$libext" "$destdir/$func_stripname_result.$libext"~test -z "$tstripme" || test -z "$striplib" || $striplib "$destdir/$func_stripname_result.$libext"' + postuninstall_cmds='for n in $library_names $old_library; do :; done~func_stripname "" ".so" "$n"~test "$func_stripname_result" = "$n" || func_append rmfiles " $odir/$func_stripname_result.$libext"' + # We do not specify a path in Import Files, so LIBPATH fires. + shlibpath_overrides_runpath=yes + ;; + *,no) # both, prefer aix + dynamic_linker="AIX lib.a(lib.so.V), lib.so.V($shared_archive_member_spec.o)" + library_names_spec='$libname$release.a $libname.a' + soname_spec='$libname$release$shared_ext$major' + # unpreferred sharedlib libNAME.so.V and symlink libNAME.so need extra handling + postinstall_cmds='test -z "$dlname" || $install_shared_prog $dir/$dlname $destdir/$dlname~test -z "$tstripme" || test -z "$striplib" || $striplib $destdir/$dlname~test -n "$linkname" || linkname=$realname~func_stripname "" ".a" "$linkname"~(cd "$destdir" && $LN_S -f $dlname $func_stripname_result.so)' + postuninstall_cmds='test -z "$dlname" || func_append rmfiles " $odir/$dlname"~for n in $old_library $library_names; do :; done~func_stripname "" ".a" "$n"~func_append rmfiles " $odir/$func_stripname_result.so"' + ;; + esac + shlibpath_var=LIBPATH + fi + ;; + +amigaos*) + case $host_cpu in + powerpc) + # Since July 2007 AmigaOS4 officially supports .so libraries. + # When compiling the executable, add -use-dynld -Lsobjs: to the compileline. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + ;; + m68k) + library_names_spec='$libname.ixlibrary $libname.a' + # Create ${libname}_ixlibrary.a entries in /sys/libs. + finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([^/]*\)\.ixlibrary$%\1%'\''`; $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done' + ;; + esac + ;; + +beos*) + library_names_spec='$libname$shared_ext' + dynamic_linker="$host_os ld.so" + shlibpath_var=LIBRARY_PATH + ;; + +bsdi[45]*) + version_type=linux # correct to gnu/linux during the next big refactor + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir' + shlibpath_var=LD_LIBRARY_PATH + sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib" + sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib" + # the default ld.so.conf also contains /usr/contrib/lib and + # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow + # libtool to hard-code these into programs + ;; + +cygwin* | mingw* | pw32* | cegcc*) + version_type=windows + shrext_cmds=.dll + need_version=no + need_lib_prefix=no + + case $GCC,$cc_basename in + yes,*) + # gcc + library_names_spec='$libname.dll.a' + # DLL is installed to $(libdir)/../bin by postinstall_cmds + postinstall_cmds='base_file=`basename \$file`~ + dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; echo \$dlname'\''`~ + dldir=$destdir/`dirname \$dlpath`~ + test -d \$dldir || mkdir -p \$dldir~ + $install_prog $dir/$dlname \$dldir/$dlname~ + chmod a+x \$dldir/$dlname~ + if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then + eval '\''$striplib \$dldir/$dlname'\'' || exit \$?; + fi' + postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~ + dlpath=$dir/\$dldll~ + $RM \$dlpath' + shlibpath_overrides_runpath=yes + + case $host_os in + cygwin*) + # Cygwin DLLs use 'cyg' prefix rather than 'lib' + soname_spec='`echo $libname | sed -e 's/^lib/cyg/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' + + ;; + mingw* | cegcc*) + # MinGW DLLs use traditional 'lib' prefix + soname_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' + ;; + pw32*) + # pw32 DLLs use 'pw' prefix rather than 'lib' + library_names_spec='`echo $libname | sed -e 's/^lib/pw/'``echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' + ;; + esac + dynamic_linker='Win32 ld.exe' + ;; + + *,cl*) + # Native MSVC + libname_spec='$name' + soname_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext' + library_names_spec='$libname.dll.lib' + + case $build_os in + mingw*) + sys_lib_search_path_spec= + lt_save_ifs=$IFS + IFS=';' + for lt_path in $LIB + do + IFS=$lt_save_ifs + # Let DOS variable expansion print the short 8.3 style file name. + lt_path=`cd "$lt_path" 2>/dev/null && cmd //C "for %i in (".") do @echo %~si"` + sys_lib_search_path_spec="$sys_lib_search_path_spec $lt_path" + done + IFS=$lt_save_ifs + # Convert to MSYS style. + sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'` + ;; + cygwin*) + # Convert to unix form, then to dos form, then back to unix form + # but this time dos style (no spaces!) so that the unix form looks + # like /cygdrive/c/PROGRA~1:/cygdr... + sys_lib_search_path_spec=`cygpath --path --unix "$LIB"` + sys_lib_search_path_spec=`cygpath --path --dos "$sys_lib_search_path_spec" 2>/dev/null` + sys_lib_search_path_spec=`cygpath --path --unix "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"` + ;; + *) + sys_lib_search_path_spec=$LIB + if $ECHO "$sys_lib_search_path_spec" | $GREP ';[c-zC-Z]:/' >/dev/null; then + # It is most probably a Windows format PATH. + sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'` + else + sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"` + fi + # FIXME: find the short name or the path components, as spaces are + # common. (e.g. "Program Files" -> "PROGRA~1") + ;; + esac + + # DLL is installed to $(libdir)/../bin by postinstall_cmds + postinstall_cmds='base_file=`basename \$file`~ + dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; echo \$dlname'\''`~ + dldir=$destdir/`dirname \$dlpath`~ + test -d \$dldir || mkdir -p \$dldir~ + $install_prog $dir/$dlname \$dldir/$dlname' + postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~ + dlpath=$dir/\$dldll~ + $RM \$dlpath' + shlibpath_overrides_runpath=yes + dynamic_linker='Win32 link.exe' + ;; + + *) + # Assume MSVC wrapper + library_names_spec='$libname`echo $release | $SED -e 's/[.]/-/g'`$versuffix$shared_ext $libname.lib' + dynamic_linker='Win32 ld.exe' + ;; + esac + # FIXME: first we should search . and the directory the executable is in + shlibpath_var=PATH + ;; + +darwin* | rhapsody*) + dynamic_linker="$host_os dyld" + version_type=darwin + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$major$shared_ext $libname$shared_ext' + soname_spec='$libname$release$major$shared_ext' + shlibpath_overrides_runpath=yes + shlibpath_var=DYLD_LIBRARY_PATH + shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`' + + sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib' + ;; + +dgux*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + ;; + +freebsd* | dragonfly*) + # DragonFly does not have aout. When/if they implement a new + # versioning mechanism, adjust this. + if test -x /usr/bin/objformat; then + objformat=`/usr/bin/objformat` + else + case $host_os in + freebsd[23].*) objformat=aout ;; + *) objformat=elf ;; + esac + fi + version_type=freebsd-$objformat + case $version_type in + freebsd-elf*) + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + need_version=no + need_lib_prefix=no + ;; + freebsd-*) + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + need_version=yes + ;; + esac + shlibpath_var=LD_LIBRARY_PATH + case $host_os in + freebsd2.*) + shlibpath_overrides_runpath=yes + ;; + freebsd3.[01]* | freebsdelf3.[01]*) + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + ;; + freebsd3.[2-9]* | freebsdelf3.[2-9]* | \ + freebsd4.[0-5] | freebsdelf4.[0-5] | freebsd4.1.1 | freebsdelf4.1.1) + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + ;; + *) # from 4.6 on, and DragonFly + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + ;; + esac + ;; + +haiku*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + dynamic_linker="$host_os runtime_loader" + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LIBRARY_PATH + shlibpath_overrides_runpath=no + sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/system/lib' + hardcode_into_libs=yes + ;; + +hpux9* | hpux10* | hpux11*) + # Give a soname corresponding to the major version so that dld.sl refuses to + # link against other versions. + version_type=sunos + need_lib_prefix=no + need_version=no + case $host_cpu in + ia64*) + shrext_cmds='.so' + hardcode_into_libs=yes + dynamic_linker="$host_os dld.so" + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes # Unless +noenvvar is specified. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + if test 32 = "$HPUX_IA64_MODE"; then + sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib" + sys_lib_dlsearch_path_spec=/usr/lib/hpux32 + else + sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64" + sys_lib_dlsearch_path_spec=/usr/lib/hpux64 + fi + ;; + hppa*64*) + shrext_cmds='.sl' + hardcode_into_libs=yes + dynamic_linker="$host_os dld.sl" + shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH + shlibpath_overrides_runpath=yes # Unless +noenvvar is specified. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64" + sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec + ;; + *) + shrext_cmds='.sl' + dynamic_linker="$host_os dld.sl" + shlibpath_var=SHLIB_PATH + shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + ;; + esac + # HP-UX runs *really* slowly unless shared libraries are mode 555, ... + postinstall_cmds='chmod 555 $lib' + # or fails outright, so override atomically: + install_override_mode=555 + ;; + +interix[3-9]*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + ;; + +irix5* | irix6* | nonstopux*) + case $host_os in + nonstopux*) version_type=nonstopux ;; + *) + if test yes = "$lt_cv_prog_gnu_ld"; then + version_type=linux # correct to gnu/linux during the next big refactor + else + version_type=irix + fi ;; + esac + need_lib_prefix=no + need_version=no + soname_spec='$libname$release$shared_ext$major' + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$release$shared_ext $libname$shared_ext' + case $host_os in + irix5* | nonstopux*) + libsuff= shlibsuff= + ;; + *) + case $LD in # libtool.m4 will add one of these switches to LD + *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ") + libsuff= shlibsuff= libmagic=32-bit;; + *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ") + libsuff=32 shlibsuff=N32 libmagic=N32;; + *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ") + libsuff=64 shlibsuff=64 libmagic=64-bit;; + *) libsuff= shlibsuff= libmagic=never-match;; + esac + ;; + esac + shlibpath_var=LD_LIBRARY${shlibsuff}_PATH + shlibpath_overrides_runpath=no + sys_lib_search_path_spec="/usr/lib$libsuff /lib$libsuff /usr/local/lib$libsuff" + sys_lib_dlsearch_path_spec="/usr/lib$libsuff /lib$libsuff" + hardcode_into_libs=yes + ;; + +# No shared lib support for Linux oldld, aout, or coff. +linux*oldld* | linux*aout* | linux*coff*) + dynamic_linker=no + ;; + +linux*android*) + version_type=none # Android doesn't support versioned libraries. + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext' + soname_spec='$libname$release$shared_ext' + finish_cmds= + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + + # This implies no fast_install, which is unacceptable. + # Some rework will be needed to allow for fast_install + # before this can be enabled. + hardcode_into_libs=yes + + dynamic_linker='Android linker' + # Don't embed -rpath directories since the linker doesn't support them. + hardcode_libdir_flag_spec_CXX='-L$libdir' + ;; + +# This must be glibc/ELF. +linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + + # Some binutils ld are patched to set DT_RUNPATH + if ${lt_cv_shlibpath_overrides_runpath+:} false; then : + $as_echo_n "(cached) " >&6 +else + lt_cv_shlibpath_overrides_runpath=no + save_LDFLAGS=$LDFLAGS + save_libdir=$libdir + eval "libdir=/foo; wl=\"$lt_prog_compiler_wl_CXX\"; \ + LDFLAGS=\"\$LDFLAGS $hardcode_libdir_flag_spec_CXX\"" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_cxx_try_link "$LINENO"; then : + if ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null; then : + lt_cv_shlibpath_overrides_runpath=yes +fi +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + LDFLAGS=$save_LDFLAGS + libdir=$save_libdir + +fi + + shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath + + # This implies no fast_install, which is unacceptable. + # Some rework will be needed to allow for fast_install + # before this can be enabled. + hardcode_into_libs=yes + + # Ideally, we could use ldconfig to report *all* directores which are + # searched for libraries, however this is still not possible. Aside from not + # being certain /sbin/ldconfig is available, command + # 'ldconfig -N -X -v | grep ^/' on 64bit Fedora does not report /usr/lib64, + # even though it is searched at run-time. Try to do the best guess by + # appending ld.so.conf contents (and includes) to the search path. + if test -f /etc/ld.so.conf; then + lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \$2)); skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '` + sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra" + fi + + # We used to test for /lib/ld.so.1 and disable shared libraries on + # powerpc, because MkLinux only supported shared libraries with the + # GNU dynamic linker. Since this was broken with cross compilers, + # most powerpc-linux boxes support dynamic linking these days and + # people can always --disable-shared, the test was removed, and we + # assume the GNU/Linux dynamic linker is in use. + dynamic_linker='GNU/Linux ld.so' + ;; + +netbsd*) + version_type=sunos + need_lib_prefix=no + need_version=no + if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir' + dynamic_linker='NetBSD (a.out) ld.so' + else + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + dynamic_linker='NetBSD ld.elf_so' + fi + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + ;; + +newsos6) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + ;; + +*nto* | *qnx*) + version_type=qnx + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + dynamic_linker='ldqnx.so' + ;; + +openbsd* | bitrig*) + version_type=sunos + sys_lib_dlsearch_path_spec=/usr/lib + need_lib_prefix=no + if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then + need_version=no + else + need_version=yes + fi + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + ;; + +os2*) + libname_spec='$name' + version_type=windows + shrext_cmds=.dll + need_version=no + need_lib_prefix=no + # OS/2 can only load a DLL with a base name of 8 characters or less. + soname_spec='`test -n "$os2dllname" && libname="$os2dllname"; + v=$($ECHO $release$versuffix | tr -d .-); + n=$($ECHO $libname | cut -b -$((8 - ${#v})) | tr . _); + $ECHO $n$v`$shared_ext' + library_names_spec='${libname}_dll.$libext' + dynamic_linker='OS/2 ld.exe' + shlibpath_var=BEGINLIBPATH + sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib" + sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec + postinstall_cmds='base_file=`basename \$file`~ + dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; $ECHO \$dlname'\''`~ + dldir=$destdir/`dirname \$dlpath`~ + test -d \$dldir || mkdir -p \$dldir~ + $install_prog $dir/$dlname \$dldir/$dlname~ + chmod a+x \$dldir/$dlname~ + if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then + eval '\''$striplib \$dldir/$dlname'\'' || exit \$?; + fi' + postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; $ECHO \$dlname'\''`~ + dlpath=$dir/\$dldll~ + $RM \$dlpath' + ;; + +osf3* | osf4* | osf5*) + version_type=osf + need_lib_prefix=no + need_version=no + soname_spec='$libname$release$shared_ext$major' + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib" + sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec + ;; + +rdos*) + dynamic_linker=no + ;; + +solaris*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + # ldd complains unless libraries are executable + postinstall_cmds='chmod +x $lib' + ;; + +sunos4*) + version_type=sunos + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + if test yes = "$with_gnu_ld"; then + need_lib_prefix=no + fi + need_version=yes + ;; + +sysv4 | sysv4.3*) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + case $host_vendor in + sni) + shlibpath_overrides_runpath=no + need_lib_prefix=no + runpath_var=LD_RUN_PATH + ;; + siemens) + need_lib_prefix=no + ;; + motorola) + need_lib_prefix=no + need_version=no + shlibpath_overrides_runpath=no + sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib' + ;; + esac + ;; + +sysv4*MP*) + if test -d /usr/nec; then + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$shared_ext.$versuffix $libname$shared_ext.$major $libname$shared_ext' + soname_spec='$libname$shared_ext.$major' + shlibpath_var=LD_LIBRARY_PATH + fi + ;; + +sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) + version_type=sco + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + if test yes = "$with_gnu_ld"; then + sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib' + else + sys_lib_search_path_spec='/usr/ccs/lib /usr/lib' + case $host_os in + sco3.2v5*) + sys_lib_search_path_spec="$sys_lib_search_path_spec /lib" + ;; + esac + fi + sys_lib_dlsearch_path_spec='/usr/lib' + ;; + +tpf*) + # TPF is a cross-target only. Preferred cross-host = GNU/Linux. + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + ;; + +uts4*) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + ;; + +*) + dynamic_linker=no + ;; +esac +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $dynamic_linker" >&5 +$as_echo "$dynamic_linker" >&6; } +test no = "$dynamic_linker" && can_build_shared=no + +variables_saved_for_relink="PATH $shlibpath_var $runpath_var" +if test yes = "$GCC"; then + variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH" +fi + +if test set = "${lt_cv_sys_lib_search_path_spec+set}"; then + sys_lib_search_path_spec=$lt_cv_sys_lib_search_path_spec +fi + +if test set = "${lt_cv_sys_lib_dlsearch_path_spec+set}"; then + sys_lib_dlsearch_path_spec=$lt_cv_sys_lib_dlsearch_path_spec +fi + +# remember unaugmented sys_lib_dlsearch_path content for libtool script decls... +configure_time_dlsearch_path=$sys_lib_dlsearch_path_spec + +# ... but it needs LT_SYS_LIBRARY_PATH munging for other configure-time code +func_munge_path_list sys_lib_dlsearch_path_spec "$LT_SYS_LIBRARY_PATH" + +# to be used as default LT_SYS_LIBRARY_PATH value in generated libtool +configure_time_lt_sys_library_path=$LT_SYS_LIBRARY_PATH + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to hardcode library paths into programs" >&5 +$as_echo_n "checking how to hardcode library paths into programs... " >&6; } +hardcode_action_CXX= +if test -n "$hardcode_libdir_flag_spec_CXX" || + test -n "$runpath_var_CXX" || + test yes = "$hardcode_automatic_CXX"; then + + # We can hardcode non-existent directories. + if test no != "$hardcode_direct_CXX" && + # If the only mechanism to avoid hardcoding is shlibpath_var, we + # have to relink, otherwise we might link with an installed library + # when we should be linking with a yet-to-be-installed one + ## test no != "$_LT_TAGVAR(hardcode_shlibpath_var, CXX)" && + test no != "$hardcode_minus_L_CXX"; then + # Linking always hardcodes the temporary library directory. + hardcode_action_CXX=relink + else + # We can link without hardcoding, and we can hardcode nonexisting dirs. + hardcode_action_CXX=immediate + fi +else + # We cannot hardcode anything, or else we can only hardcode existing + # directories. + hardcode_action_CXX=unsupported +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $hardcode_action_CXX" >&5 +$as_echo "$hardcode_action_CXX" >&6; } + +if test relink = "$hardcode_action_CXX" || + test yes = "$inherit_rpath_CXX"; then + # Fast installation is not supported + enable_fast_install=no +elif test yes = "$shlibpath_overrides_runpath" || + test no = "$enable_shared"; then + # Fast installation is not necessary + enable_fast_install=needless +fi + + + + + + + + fi # test -n "$compiler" + + CC=$lt_save_CC + CFLAGS=$lt_save_CFLAGS + LDCXX=$LD + LD=$lt_save_LD + GCC=$lt_save_GCC + with_gnu_ld=$lt_save_with_gnu_ld + lt_cv_path_LDCXX=$lt_cv_path_LD + lt_cv_path_LD=$lt_save_path_LD + lt_cv_prog_gnu_ldcxx=$lt_cv_prog_gnu_ld + lt_cv_prog_gnu_ld=$lt_save_with_gnu_ld +fi # test yes != "$_lt_caught_CXX_error" + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + + + + + + + + + + + + + + + ac_config_commands="$ac_config_commands libtool" + + + + +# Only expand once: + + +# Note: If Autoconf reports that LIBTOOL (or AC_ENABLE_SHARED, or +# AC_PROG_LIBTOOL) is undefined, Libtool installation should be checked. + +# Special CFLAGS to use when building +gc_cflags="" + +# gc_use_mmap Set to "yes" on platforms where mmap should be used instead +# of sbrk. This will define USE_MMAP. +gc_use_mmap="" + +# We should set -fexceptions if we are using gcc and might be used +# inside something like gcj. 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then + $as_echo "#define PARALLEL_MARK 1" >>confdefs.h + + fi + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \"Explicit GC_INIT() calls may be required.\"" >&5 +$as_echo "$as_me: WARNING: \"Explicit GC_INIT() calls may be required.\"" >&2;} + ;; + *-*-*linux* | *-*-nacl*) + $as_echo "#define GC_LINUX_THREADS 1" >>confdefs.h + + $as_echo "#define _REENTRANT 1" >>confdefs.h + + ;; + *-*-aix*) + $as_echo "#define GC_AIX_THREADS 1" >>confdefs.h + + $as_echo "#define _REENTRANT 1" >>confdefs.h + + ;; + *-*-hpux11*) + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \"Only HP/UX 11 POSIX threads are supported.\"" >&5 +$as_echo "$as_me: WARNING: \"Only HP/UX 11 POSIX threads are supported.\"" >&2;} + $as_echo "#define GC_HPUX_THREADS 1" >>confdefs.h + + $as_echo "#define _POSIX_C_SOURCE 199506L" >>confdefs.h + + if test "${enable_parallel_mark}" = yes; then + $as_echo "#define PARALLEL_MARK 1" >>confdefs.h + + fi + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \"Explicit GC_INIT() calls may be required.\"" >&5 +$as_echo "$as_me: WARNING: \"Explicit GC_INIT() calls may be required.\"" >&2;} + THREADDLLIBS="-lpthread -lrt" + # HPUX needs REENTRANT for the _r calls. + +$as_echo "#define _REENTRANT 1" >>confdefs.h + + ;; 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then + $as_echo "#define PARALLEL_MARK 1" >>confdefs.h + + fi + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + $as_echo "#define USE_COMPILER_TLS 1" >>confdefs.h + + ;; + *-*-gnu*) + $as_echo "#define GC_GNU_THREADS 1" >>confdefs.h + + $as_echo "#define _REENTRANT 1" >>confdefs.h + + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + ;; + *-*-netbsd*) + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \"Only on NetBSD 2.0 or later.\"" >&5 +$as_echo "$as_me: WARNING: \"Only on NetBSD 2.0 or later.\"" >&2;} + $as_echo "#define GC_NETBSD_THREADS 1" >>confdefs.h + + $as_echo "#define _REENTRANT 1" >>confdefs.h + + $as_echo "#define _PTHREADS 1" >>confdefs.h + + THREADDLLIBS="-lpthread -lrt" + ;; + *-*-solaris*) + $as_echo "#define GC_SOLARIS_THREADS 1" >>confdefs.h + + if test "${enable_parallel_mark}" != no; then + $as_echo "#define PARALLEL_MARK 1" >>confdefs.h + + fi + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + # Need to use alternate thread library, otherwise gctest hangs + # on Solaris 8. + multi_os_directory=`$CC -print-multi-os-directory` + THREADDLLIBS="-L/usr/lib/lwp/$multi_os_directory \ + -R/usr/lib/lwp/$multi_os_directory -lpthread -lrt" + ;; 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then + $as_echo "#define PARALLEL_MARK 1" >>confdefs.h + + fi + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + darwin_threads=true + ;; + *-*-osf*) + $as_echo "#define GC_OSF1_THREADS 1" >>confdefs.h + + if test "${enable_parallel_mark}" = yes; then + $as_echo "#define PARALLEL_MARK 1" >>confdefs.h + + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \"Explicit GC_INIT() calls may be required.\"" >&5 +$as_echo "$as_me: WARNING: \"Explicit GC_INIT() calls may be required.\"" >&2;}; + # May want to enable it in other cases, too. + # Measurements have not yet been done. + fi + AM_CFLAGS="$AM_CFLAGS -pthread" + THREADDLLIBS="-lpthread -lrt" + ;; + *) + as_fn_error $? "\"Pthreads not supported by the GC on this platform.\"" "$LINENO" 5 + ;; + esac + case "$host" in + sparc*-*-solaris*) + if test "$GCC" != yes; then + need_atomic_ops_asm=true + fi + ;; + esac + ;; + win32) + $as_echo "#define GC_WIN32_THREADS 1" >>confdefs.h + + if test "${enable_parallel_mark}" != no; then + $as_echo "#define PARALLEL_MARK 1" >>confdefs.h + + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + else + if test "${enable_shared}" != yes || test "${enable_static}" != no; then + # Imply THREAD_LOCAL_ALLOC unless GC_DLL. + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + fi + fi + if test "${enable_win32_dllmain}" = yes; then + +$as_echo "#define GC_INSIDE_DLL 1" >>confdefs.h + + fi + win32_threads=true + +$as_echo "#define EMPTY_GETENV_RESULTS 1" >>confdefs.h + + ;; + dgux386) + THREADS=dgux386 + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $THREADDLLIBS" >&5 +$as_echo "$THREADDLLIBS" >&6; } + # Use pthread GCC switch + THREADDLLIBS=-pthread + if test "${enable_parallel_mark}" = yes; then + $as_echo "#define PARALLEL_MARK 1" >>confdefs.h + + fi + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \"Explicit GC_INIT() calls may be required.\"" >&5 +$as_echo "$as_me: WARNING: \"Explicit GC_INIT() calls may be required.\"" >&2;} + +$as_echo "#define GC_DGUX386_THREADS 1" >>confdefs.h + + +$as_echo "#define DGUX_THREADS 1" >>confdefs.h + + # Enable _POSIX4A_DRAFT10_SOURCE with flag -pthread + AM_CFLAGS="-pthread $AM_CFLAGS" + ;; + aix) + THREADS=posix + THREADDLLIBS=-lpthread + $as_echo "#define GC_AIX_THREADS 1" >>confdefs.h + + $as_echo "#define _REENTRANT 1" >>confdefs.h + + ;; + rtems) + THREADS=posix + $as_echo "#define GC_RTEMS_PTHREADS 1" >>confdefs.h + + $as_echo "#define THREAD_LOCAL_ALLOC 1" >>confdefs.h + + ;; + decosf1 | irix | mach | os2 | solaris | dce | vxworks) + as_fn_error $? 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" >&6; } +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + #ifndef __xlC__ + # error + #endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + compiler_xlc=yes +else + compiler_xlc=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $compiler_xlc" >&5 +$as_echo "$compiler_xlc" >&6; } +if test $compiler_xlc = yes -a "$powerpc_darwin" = true; then + # the darwin stack-frame-walking code is completely broken on xlc + +$as_echo "#define DARWIN_DONT_PARSE_STACK 1" >>confdefs.h + +fi + +# XLC neither requires nor tolerates the unnecessary assembler goop. +# Similar for the Sun C compiler. + if test $compiler_xlc = yes -o $compiler_suncc = yes; then + ASM_WITH_CPP_UNSUPPORTED_TRUE= + ASM_WITH_CPP_UNSUPPORTED_FALSE='#' +else + ASM_WITH_CPP_UNSUPPORTED_TRUE='#' + ASM_WITH_CPP_UNSUPPORTED_FALSE= +fi + + +if test "$GCC" = yes; then + # Disable aliasing optimization unless forced to. + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -fno-strict-aliasing" >&5 +$as_echo_n "checking whether compiler supports -fno-strict-aliasing... 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It is a fake libdl that just ends up making +# dyld calls anyway. The same applies to Cygwin. + *-*-darwin*) ;; + *-*-cygwin*) ;; + *) + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5 +$as_echo_n "checking for dlopen in -ldl... 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" >&6; } + SUPC="`$CXX -print-file-name=libsupc++.a 2>/dev/null`" + if test -n "$SUPC" -a "$SUPC" != "libsupc++.a"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + CXXLIBS="-lsupc++" + else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + fi + ;; + esac + fi +fi + + + + + + +# Configuration of shared libraries +# +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build shared libraries" >&5 +$as_echo_n "checking whether to build shared libraries... " >&6; } +# Check whether --enable-shared was given. +if test "${enable_shared+set}" = set; then : + enableval=$enable_shared; p=${PACKAGE-default} + case $enableval in + yes) enable_shared=yes ;; + no) enable_shared=no ;; + *) + enable_shared=no + # Look at the argument we got. We use all the common list separators. + lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, + for pkg in $enableval; do + IFS=$lt_save_ifs + if test "X$pkg" = "X$p"; then + enable_shared=yes + fi + done + IFS=$lt_save_ifs + ;; + esac +else + enable_shared=yes +fi + + + + + + + +case "$host" in + alpha-*-openbsd*) + enable_shared=no + ;; + *) + ;; +esac + +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_shared" >&5 +$as_echo "$enable_shared" >&6; } + +# Compile with GC_DLL defined unless building static libraries. +if test "${enable_shared}" = yes; then + if test "${enable_static}" = no; then + $as_echo "#define GC_DLL 1" >>confdefs.h + + if test "$GCC" = yes; then + # Pass -fvisibility=hidden option if supported + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -fvisibility" >&5 +$as_echo_n "checking whether compiler supports -fvisibility... 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" >&6; } +machdep= +case "$host" in + alpha-*-openbsd*) + if test x"${ac_cv_lib_dl_dlopen}" != xyes ; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \"OpenBSD/Alpha without dlopen(). Shared library support is disabled.\"" >&5 +$as_echo "$as_me: WARNING: \"OpenBSD/Alpha without dlopen(). Shared library support is disabled.\"" >&2;} + fi + ;; + i?86-*-solaris2.[89]) + # PROC_VDB appears to work in 2.8 and 2.9 but not in 2.10+ (for now). + +$as_echo "#define SOLARIS25_PROC_VDB_BUG_FIXED 1" >>confdefs.h + + ;; + mips-*-*) + ;; + sparc-*-netbsd*) + machdep="sparc_netbsd_mach_dep.lo" + ;; + sparc*-*-linux* | sparc*-*-openbsd* | sparc64-*-freebsd* | sparc64-*-netbsd*) + machdep="sparc_mach_dep.lo" + ;; + sparc-sun-solaris2.3) + machdep="sparc_mach_dep.lo" + +$as_echo "#define SUNOS53_SHARED_LIB 1" >>confdefs.h + + ;; + sparc*-sun-solaris2*) + machdep="sparc_mach_dep.lo" + ;; + ia64-*-*) + machdep="ia64_save_regs_in_stack.lo" + ;; + *-*-nacl*) + $as_echo "#define NO_EXECUTE_PERMISSION 1" >>confdefs.h + + ;; +esac +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $machdep" >&5 +$as_echo "$machdep" >&6; } +addobjs="$addobjs $machdep" + + + + + + +# Check whether --with-target-subdir was given. +if test "${with_target_subdir+set}" = set; then : + withval=$with_target_subdir; +fi + + +# Check whether --with-cross-host was given. +if test "${with_cross_host+set}" = set; then : + withval=$with_cross_host; +fi + + +# automake wants to see AC_EXEEXT. But we don't need it. And having +# it is actually a problem, because the compiler we're passed can't +# necessarily do a full link. So we fool automake here. +if false; then + # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands + # to nothing, so nothing would remain between `then' and `fi' if it + # were not for the `:' below. + : + +fi + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether Solaris gcc optimization fix is necessary" >&5 +$as_echo_n "checking whether Solaris gcc optimization fix is necessary... 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then + CFLAGS="-g -mstandard $CFLAGS" + CXXFLAGS="-g -mstandard $CXXFLAGS" + fi + + +fi + +# Check whether --enable-java-finalization was given. +if test "${enable_java_finalization+set}" = set; then : + enableval=$enable_java_finalization; +fi + +if test x"$enable_java_finalization" != xno; then + +$as_echo "#define JAVA_FINALIZATION 1" >>confdefs.h + +fi + +# Check whether --enable-atomic-uncollectable was given. +if test "${enable_atomic_uncollectable+set}" = set; then : + enableval=$enable_atomic_uncollectable; +fi + +if test x"$enable_atomic_uncollectible" != x"no"; then + +$as_echo "#define GC_ATOMIC_UNCOLLECTABLE 1" >>confdefs.h + +fi + +# Check whether --enable-redirect-malloc was given. +if test "${enable_redirect_malloc+set}" = set; then : + enableval=$enable_redirect_malloc; +fi + + +if test "${enable_redirect_malloc}" = yes; then + if test "${enable_gc_debug}" = yes; then + +$as_echo "#define REDIRECT_MALLOC GC_debug_malloc_replacement" >>confdefs.h + + +$as_echo "#define REDIRECT_REALLOC GC_debug_realloc_replacement" >>confdefs.h + + +$as_echo "#define REDIRECT_FREE GC_debug_free" >>confdefs.h + + else + $as_echo "#define REDIRECT_MALLOC GC_malloc" >>confdefs.h + + fi + +$as_echo "#define GC_USE_DLOPEN_WRAP 1" >>confdefs.h + +fi + +# Check whether --enable-disclaim was given. +if test "${enable_disclaim+set}" = set; then : + enableval=$enable_disclaim; +fi + +if test x"$enable_disclaim" != xno; then + +$as_echo "#define ENABLE_DISCLAIM 1" >>confdefs.h + +fi + if test x"$enable_disclaim" != xno; then + ENABLE_DISCLAIM_TRUE= + ENABLE_DISCLAIM_FALSE='#' +else + ENABLE_DISCLAIM_TRUE='#' + ENABLE_DISCLAIM_FALSE= +fi + + +# Check whether --enable-large-config was given. +if test "${enable_large_config+set}" = set; then : + enableval=$enable_large_config; +fi + + +if test "${enable_large_config}" = yes; then + +$as_echo "#define LARGE_CONFIG 1" >>confdefs.h + +fi + +# Check whether --enable-handle-fork was given. +if test "${enable_handle_fork+set}" = set; then : + enableval=$enable_handle_fork; +fi + + +if test "${enable_handle_fork}" = yes; then + +$as_echo "#define HANDLE_FORK 1" >>confdefs.h + +elif test "${enable_handle_fork}" = no; then + +$as_echo "#define NO_HANDLE_FORK 1" >>confdefs.h + +fi + +if test -n "${with_cross_host}"; then + +$as_echo "#define NO_CLOCK 1" >>confdefs.h + + +$as_echo "#define SMALL_CONFIG 1" >>confdefs.h + +fi + +if test "$enable_gc_debug" = "no"; then + +$as_echo "#define NO_DEBUGGING 1" >>confdefs.h + +fi + + + +# Check whether --enable-gc-assertions was given. +if test "${enable_gc_assertions+set}" = set; then : + enableval=$enable_gc_assertions; +fi + +if test "${enable_gc_assertions}" = yes; then + +$as_echo "#define GC_ASSERTIONS 1" >>confdefs.h + +fi + +# Check whether --enable-munmap was given. +if test "${enable_munmap+set}" = set; then : + enableval=$enable_munmap; MUNMAP_THRESHOLD=$enableval +fi + +if test x$enable_munmap != x -a x$enable_munmap != xno; then + +$as_echo "#define USE_MMAP 1" >>confdefs.h + + + +$as_echo "#define USE_MUNMAP 1" >>confdefs.h + + if test "${MUNMAP_THRESHOLD}" = "yes"; then + MUNMAP_THRESHOLD=6 + fi + +cat >>confdefs.h <<_ACEOF +#define MUNMAP_THRESHOLD ${MUNMAP_THRESHOLD} +_ACEOF + +else + if test "${gc_use_mmap}" = "yes"; then + +$as_echo "#define USE_MMAP 1" >>confdefs.h + + fi +fi + + if test -z "$with_cross_host"; then + USE_LIBDIR_TRUE= + USE_LIBDIR_FALSE='#' +else + USE_LIBDIR_TRUE='#' + USE_LIBDIR_FALSE= +fi + + +# Check whether --enable-werror was given. +if test "${enable_werror+set}" = set; then : + enableval=$enable_werror; werror_flag=$enableval +else + werror_flag=no +fi + +if test x$werror_flag = xyes; then + WERROR_CFLAGS="-Werror" + case "$host" in + # _dyld_bind_fully_image_containing_address is deprecated in OS X 10.5+ + *-*-darwin*) + WERROR_CFLAGS="$WERROR_CFLAGS -Wno-deprecated-declarations" + ;; + esac +fi + + +# Check whether --enable-single-obj-compilation was given. +if test "${enable_single_obj_compilation+set}" = set; then : + enableval=$enable_single_obj_compilation; single_obj_compilation=yes +fi + + if test "$single_obj_compilation" = "yes"; then + SINGLE_GC_OBJ_TRUE= + SINGLE_GC_OBJ_FALSE='#' +else + SINGLE_GC_OBJ_TRUE='#' + SINGLE_GC_OBJ_FALSE= +fi + + +# Check whether --enable-gcov was given. +if test "${enable_gcov+set}" = set; then : + enableval=$enable_gcov; +fi + +if test "$enable_gcov" = "yes"; then + CFLAGS="$CFLAGS --coverage" + if test "${enable_shared}" = no; then + # FIXME: As of g++-4.8.4/x86_64, in case of shared library build, test_cpp + # linkage fails with "hidden symbol atexit is referenced by DSO" message. + CXXFLAGS="$CXXFLAGS --coverage" + fi + # Turn off optimization to get accurate line numbers. + CFLAGS=`echo "$CFLAGS" | sed -e 's/-O\(1\|2\|3\|4\|s\|fast\)\?//g'` + CXXFLAGS=`echo "$CXXFLAGS" | sed -e 's/-O\(1\|2\|3\|4\|s\|fast\)\?//g'` +fi + +# Check whether --enable-docs was given. +if test "${enable_docs+set}" = set; then : + enableval=$enable_docs; +fi + + if test x$enable_docs != xno; then + ENABLE_DOCS_TRUE= + ENABLE_DOCS_FALSE='#' +else + ENABLE_DOCS_TRUE='#' + ENABLE_DOCS_FALSE= +fi + + +# Atomic Ops +# ---------- + +# Do we want to use an external libatomic_ops? By default use it if it's +# found. + +# Check whether --with-libatomic-ops was given. +if test "${with_libatomic_ops+set}" = set; then : + withval=$with_libatomic_ops; +else + with_libatomic_ops=check +fi + + +# Check for an external libatomic_ops if the above answer is "yes" or "check". +# If not found, fail on "yes", and convert "check" to "no". +# First, check that libatomic_ops usage is not disabled explicitly. +missing_libatomic_ops=false +if test x"$with_libatomic_ops" != xno -a x"$THREADS" != xnone; then : + missing_libatomic_ops=true +fi + +# Note: "syntax error near unexpected token ATOMIC_OPS" reported by configure +# means Autotools pkg.m4 file was not found during aclocal.m4 generation; +# in this case, most probably, you should run pkg-config once before running +# autogen.sh (autoreconf); alternatively, comment out the following 3 lines. + + + + + + + +if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args. +set dummy ${ac_tool_prefix}pkg-config; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_PKG_CONFIG+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $PKG_CONFIG in + [\\/]* | ?:[\\/]*) + ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +PKG_CONFIG=$ac_cv_path_PKG_CONFIG +if test -n "$PKG_CONFIG"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5 +$as_echo "$PKG_CONFIG" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_path_PKG_CONFIG"; then + ac_pt_PKG_CONFIG=$PKG_CONFIG + # Extract the first word of "pkg-config", so it can be a program name with args. +set dummy pkg-config; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_path_ac_pt_PKG_CONFIG+:} false; then : + $as_echo_n "(cached) " >&6 +else + case $ac_pt_PKG_CONFIG in + [\\/]* | ?:[\\/]*) + ac_cv_path_ac_pt_PKG_CONFIG="$ac_pt_PKG_CONFIG" # Let the user override the test with a path. + ;; + *) + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_path_ac_pt_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + + ;; +esac +fi +ac_pt_PKG_CONFIG=$ac_cv_path_ac_pt_PKG_CONFIG +if test -n "$ac_pt_PKG_CONFIG"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5 +$as_echo "$ac_pt_PKG_CONFIG" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_pt_PKG_CONFIG" = x; then + PKG_CONFIG="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + PKG_CONFIG=$ac_pt_PKG_CONFIG + fi +else + PKG_CONFIG="$ac_cv_path_PKG_CONFIG" +fi + +fi +if test -n "$PKG_CONFIG"; then + _pkg_min_version=0.9.0 + { $as_echo "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5 +$as_echo_n "checking pkg-config is at least version $_pkg_min_version... " >&6; } + if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + PKG_CONFIG="" + fi +fi +if test x$missing_libatomic_ops = xtrue; then : + +pkg_failed=no +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for atomic_ops" >&5 +$as_echo_n "checking for atomic_ops... " >&6; } + +if test -n "$ATOMIC_OPS_CFLAGS"; then + pkg_cv_ATOMIC_OPS_CFLAGS="$ATOMIC_OPS_CFLAGS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"atomic_ops\""; } >&5 + ($PKG_CONFIG --exists --print-errors "atomic_ops") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_ATOMIC_OPS_CFLAGS=`$PKG_CONFIG --cflags "atomic_ops" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi +if test -n "$ATOMIC_OPS_LIBS"; then + pkg_cv_ATOMIC_OPS_LIBS="$ATOMIC_OPS_LIBS" + elif test -n "$PKG_CONFIG"; then + if test -n "$PKG_CONFIG" && \ + { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"atomic_ops\""; } >&5 + ($PKG_CONFIG --exists --print-errors "atomic_ops") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then + pkg_cv_ATOMIC_OPS_LIBS=`$PKG_CONFIG --libs "atomic_ops" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes +else + pkg_failed=yes +fi + else + pkg_failed=untried +fi + + + +if test $pkg_failed = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi + if test $_pkg_short_errors_supported = yes; then + ATOMIC_OPS_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "atomic_ops" 2>&1` + else + ATOMIC_OPS_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "atomic_ops" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$ATOMIC_OPS_PKG_ERRORS" >&5 + + +elif test $pkg_failed = untried; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + +else + ATOMIC_OPS_CFLAGS=$pkg_cv_ATOMIC_OPS_CFLAGS + ATOMIC_OPS_LIBS=$pkg_cv_ATOMIC_OPS_LIBS + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + missing_libatomic_ops=false +fi +fi + +# Retry with AC_CHECK_HEADER if PKG_CHECK_MODULES failed. +if test x$missing_libatomic_ops = xtrue; then : + ac_fn_c_check_header_mongrel "$LINENO" "atomic_ops.h" "ac_cv_header_atomic_ops_h" "$ac_includes_default" +if test "x$ac_cv_header_atomic_ops_h" = xyes; then : + missing_libatomic_ops=false +fi + + +fi +if test x$missing_libatomic_ops = xtrue; then : + if test x"$with_libatomic_ops" != xcheck; then : + as_fn_error $? "An external libatomic_ops was not found" "$LINENO" 5 +fi + with_libatomic_ops=no +fi + +# If we have neither an external or an internal version, offer a useful hint +# and exit. +if test x"$with_libatomic_ops" = xno \ + -a ! -e "$srcdir/libatomic_ops/src/atomic_ops.h"; then : + as_fn_error $? "libatomic_ops is required. You can either install it on + your system, or fetch and unpack a recent version into the + source directory and link or rename it to libatomic_ops." "$LINENO" 5 +fi + +# Finally, emit the definitions for bundled or external AO. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking which libatomic_ops to use" >&5 +$as_echo_n "checking which libatomic_ops to use... " >&6; } + + +if test x"$with_libatomic_ops" != xno; then : + if test x"$THREADS" != xnone; then : + { $as_echo "$as_me:${as_lineno-$LINENO}: result: external" >&5 +$as_echo "external" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5 +$as_echo "none" >&6; } +fi +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: internal" >&5 +$as_echo "internal" >&6; } + ATOMIC_OPS_CFLAGS='-I$(top_builddir)/libatomic_ops/src -I$(top_srcdir)/libatomic_ops/src' + ATOMIC_OPS_LIBS="" + + subdirs="$subdirs libatomic_ops" + + +fi + if test x$with_libatomic_ops = xno -a x"$THREADS" != xnone; then + USE_INTERNAL_LIBATOMIC_OPS_TRUE= + USE_INTERNAL_LIBATOMIC_OPS_FALSE='#' +else + USE_INTERNAL_LIBATOMIC_OPS_TRUE='#' + USE_INTERNAL_LIBATOMIC_OPS_FALSE= +fi + + if test x$with_libatomic_ops = xno -a x$need_atomic_ops_asm = xtrue; then + NEED_ATOMIC_OPS_ASM_TRUE= + NEED_ATOMIC_OPS_ASM_FALSE='#' +else + NEED_ATOMIC_OPS_ASM_TRUE='#' + NEED_ATOMIC_OPS_ASM_FALSE= +fi + + + +ac_config_files="$ac_config_files Makefile bdw-gc.pc" + + +ac_config_commands="$ac_config_commands default" + + +cat >confcache <<\_ACEOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs, see configure's option --config-cache. +# It is not useful on other systems. If it contains results you don't +# want to keep, you may remove or edit it. +# +# config.status only pays attention to the cache file if you give it +# the --recheck option to rerun configure. +# +# `ac_cv_env_foo' variables (set or unset) will be overridden when +# loading this file, other *unset* `ac_cv_foo' will be assigned the +# following values. + +_ACEOF + +# The following way of writing the cache mishandles newlines in values, +# but we know of no workaround that is simple, portable, and efficient. +# So, we kill variables containing newlines. +# Ultrix sh set writes to stderr and can't be redirected directly, +# and sets the high bit in the cache file unless we assign to the vars. +( + for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do + eval ac_val=\$$ac_var + case $ac_val in #( + *${as_nl}*) + case $ac_var in #( + *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5 +$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;; + esac + case $ac_var in #( + _ | IFS | as_nl) ;; #( + BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #( + *) { eval $ac_var=; unset $ac_var;} ;; + esac ;; + esac + done + + (set) 2>&1 | + case $as_nl`(ac_space=' '; set) 2>&1` in #( + *${as_nl}ac_space=\ *) + # `set' does not quote correctly, so add quotes: double-quote + # substitution turns \\\\ into \\, and sed turns \\ into \. + sed -n \ + "s/'/'\\\\''/g; + s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p" + ;; #( + *) + # `set' quotes correctly as required by POSIX, so do not add quotes. + sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p" + ;; + esac | + sort +) | + sed ' + /^ac_cv_env_/b end + t clear + :clear + s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/ + t end + s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/ + :end' >>confcache +if diff "$cache_file" confcache >/dev/null 2>&1; then :; else + if test -w "$cache_file"; then + if test "x$cache_file" != "x/dev/null"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5 +$as_echo "$as_me: updating cache $cache_file" >&6;} + if test ! -f "$cache_file" || test -h "$cache_file"; then + cat confcache >"$cache_file" + else + case $cache_file in #( + */* | ?:*) + mv -f confcache "$cache_file"$$ && + mv -f "$cache_file"$$ "$cache_file" ;; #( + *) + mv -f confcache "$cache_file" ;; + esac + fi + fi + else + { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5 +$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;} + fi +fi +rm -f confcache + +test "x$prefix" = xNONE && prefix=$ac_default_prefix +# Let make expand exec_prefix. +test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' + +DEFS=-DHAVE_CONFIG_H + +ac_libobjs= +ac_ltlibobjs= +U= +for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue + # 1. Remove the extension, and $U if already installed. + ac_script='s/\$U\././;s/\.o$//;s/\.obj$//' + ac_i=`$as_echo "$ac_i" | sed "$ac_script"` + # 2. Prepend LIBOBJDIR. When used with automake>=1.10 LIBOBJDIR + # will be set to the directory where LIBOBJS objects are built. + as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext" + as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo' +done +LIBOBJS=$ac_libobjs + +LTLIBOBJS=$ac_ltlibobjs + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking that generated files are newer than configure" >&5 +$as_echo_n "checking that generated files are newer than configure... " >&6; } + if test -n "$am_sleep_pid"; then + # Hide warnings about reused PIDs. + wait $am_sleep_pid 2>/dev/null + fi + { $as_echo "$as_me:${as_lineno-$LINENO}: result: done" >&5 +$as_echo "done" >&6; } + if test -n "$EXEEXT"; then + am__EXEEXT_TRUE= + am__EXEEXT_FALSE='#' +else + am__EXEEXT_TRUE='#' + am__EXEEXT_FALSE= +fi + +if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then + as_fn_error $? "conditional \"MAINTAINER_MODE\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${AMDEP_TRUE}" && test -z "${AMDEP_FALSE}"; then + as_fn_error $? "conditional \"AMDEP\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then + as_fn_error $? "conditional \"am__fastdepCC\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${am__fastdepCXX_TRUE}" && test -z "${am__fastdepCXX_FALSE}"; then + as_fn_error $? "conditional \"am__fastdepCXX\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${am__fastdepCCAS_TRUE}" && test -z "${am__fastdepCCAS_FALSE}"; then + as_fn_error $? "conditional \"am__fastdepCCAS\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${THREADS_TRUE}" && test -z "${THREADS_FALSE}"; then + as_fn_error $? "conditional \"THREADS\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${PTHREADS_TRUE}" && test -z "${PTHREADS_FALSE}"; then + as_fn_error $? "conditional \"PTHREADS\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${DARWIN_THREADS_TRUE}" && test -z "${DARWIN_THREADS_FALSE}"; then + as_fn_error $? "conditional \"DARWIN_THREADS\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${WIN32_THREADS_TRUE}" && test -z "${WIN32_THREADS_FALSE}"; then + as_fn_error $? "conditional \"WIN32_THREADS\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${PTHREAD_START_STANDALONE_TRUE}" && test -z "${PTHREAD_START_STANDALONE_FALSE}"; then + as_fn_error $? "conditional \"PTHREAD_START_STANDALONE\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${ASM_WITH_CPP_UNSUPPORTED_TRUE}" && test -z "${ASM_WITH_CPP_UNSUPPORTED_FALSE}"; then + as_fn_error $? "conditional \"ASM_WITH_CPP_UNSUPPORTED\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${AVOID_CPP_LIB_TRUE}" && test -z "${AVOID_CPP_LIB_FALSE}"; then + as_fn_error $? "conditional \"AVOID_CPP_LIB\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${CPLUSPLUS_TRUE}" && test -z "${CPLUSPLUS_FALSE}"; then + as_fn_error $? "conditional \"CPLUSPLUS\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${MAKE_BACK_GRAPH_TRUE}" && test -z "${MAKE_BACK_GRAPH_FALSE}"; then + as_fn_error $? "conditional \"MAKE_BACK_GRAPH\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${KEEP_BACK_PTRS_TRUE}" && test -z "${KEEP_BACK_PTRS_FALSE}"; then + as_fn_error $? "conditional \"KEEP_BACK_PTRS\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${ENABLE_DISCLAIM_TRUE}" && test -z "${ENABLE_DISCLAIM_FALSE}"; then + as_fn_error $? "conditional \"ENABLE_DISCLAIM\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${USE_LIBDIR_TRUE}" && test -z "${USE_LIBDIR_FALSE}"; then + as_fn_error $? "conditional \"USE_LIBDIR\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${SINGLE_GC_OBJ_TRUE}" && test -z "${SINGLE_GC_OBJ_FALSE}"; then + as_fn_error $? "conditional \"SINGLE_GC_OBJ\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${ENABLE_DOCS_TRUE}" && test -z "${ENABLE_DOCS_FALSE}"; then + as_fn_error $? "conditional \"ENABLE_DOCS\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${USE_INTERNAL_LIBATOMIC_OPS_TRUE}" && test -z "${USE_INTERNAL_LIBATOMIC_OPS_FALSE}"; then + as_fn_error $? "conditional \"USE_INTERNAL_LIBATOMIC_OPS\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${NEED_ATOMIC_OPS_ASM_TRUE}" && test -z "${NEED_ATOMIC_OPS_ASM_FALSE}"; then + as_fn_error $? "conditional \"NEED_ATOMIC_OPS_ASM\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi + +: "${CONFIG_STATUS=./config.status}" +ac_write_fail=0 +ac_clean_files_save=$ac_clean_files +ac_clean_files="$ac_clean_files $CONFIG_STATUS" +{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5 +$as_echo "$as_me: creating $CONFIG_STATUS" >&6;} +as_write_fail=0 +cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1 +#! $SHELL +# Generated by $as_me. +# Run this file to recreate the current configuration. +# Compiler output produced by configure, useful for debugging +# configure, is in config.log if it exists. + +debug=false +ac_cs_recheck=false +ac_cs_silent=false + +SHELL=\${CONFIG_SHELL-$SHELL} +export SHELL +_ASEOF +cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1 +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent editors from complaining about space-tab. +# (If _AS_PATH_WALK were called with IFS unset, it would disable word +# splitting by setting IFS to empty value.) +IFS=" "" $as_nl" + +# Find who we are. Look in the path if we contain no directory separator. +as_myself= +case $0 in #(( + *[\\/]* ) as_myself=$0 ;; + *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break + done +IFS=$as_save_IFS + + ;; +esac +# We did not find ourselves, most probably we were run as `sh COMMAND' +# in which case we are not to be found in the path. +if test "x$as_myself" = x; then + as_myself=$0 +fi +if test ! -f "$as_myself"; then + $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + +# Unset variables that we do not need and which cause bugs (e.g. in +# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1" +# suppresses any "Segmentation fault" message there. '((' could +# trigger a bug in pdksh 5.2.14. +for as_var in BASH_ENV ENV MAIL MAILPATH +do eval test x\${$as_var+set} = xset \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + + +# as_fn_error STATUS ERROR [LINENO LOG_FD] +# ---------------------------------------- +# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are +# provided, also output the error to LOG_FD, referencing LINENO. Then exit the +# script with STATUS, using 1 if that was 0. +as_fn_error () +{ + as_status=$1; test $as_status -eq 0 && as_status=1 + if test "$4"; then + as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4 + fi + $as_echo "$as_me: error: $2" >&2 + as_fn_exit $as_status +} # as_fn_error + + +# as_fn_set_status STATUS +# ----------------------- +# Set $? to STATUS, without forking. +as_fn_set_status () +{ + return $1 +} # as_fn_set_status + +# as_fn_exit STATUS +# ----------------- +# Exit the shell with STATUS, even in a "trap 0" or "set -e" context. +as_fn_exit () +{ + set +e + as_fn_set_status $1 + exit $1 +} # as_fn_exit + +# as_fn_unset VAR +# --------------- +# Portably unset VAR. +as_fn_unset () +{ + { eval $1=; unset $1;} +} +as_unset=as_fn_unset +# as_fn_append VAR VALUE +# ---------------------- +# Append the text in VALUE to the end of the definition contained in VAR. Take +# advantage of any shell optimizations that allow amortized linear growth over +# repeated appends, instead of the typical quadratic growth present in naive +# implementations. +if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then : + eval 'as_fn_append () + { + eval $1+=\$2 + }' +else + as_fn_append () + { + eval $1=\$$1\$2 + } +fi # as_fn_append + +# as_fn_arith ARG... +# ------------------ +# Perform arithmetic evaluation on the ARGs, and store the result in the +# global $as_val. Take advantage of shells that can avoid forks. The arguments +# must be portable across $(()) and expr. +if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then : + eval 'as_fn_arith () + { + as_val=$(( $* )) + }' +else + as_fn_arith () + { + as_val=`expr "$@" || test $? -eq 1` + } +fi # as_fn_arith + + +if expr a : '\(a\)' >/dev/null 2>&1 && + test "X`expr 00001 : '.*\(...\)'`" = X001; then + as_expr=expr +else + as_expr=false +fi + +if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then + as_basename=basename +else + as_basename=false +fi + +if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then + as_dirname=dirname +else + as_dirname=false +fi + +as_me=`$as_basename -- "$0" || +$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \ + X"$0" : 'X\(//\)$' \| \ + X"$0" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X/"$0" | + sed '/^.*\/\([^/][^/]*\)\/*$/{ + s//\1/ + q + } + /^X\/\(\/\/\)$/{ + s//\1/ + q + } + /^X\/\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + +# Avoid depending upon Character Ranges. +as_cr_letters='abcdefghijklmnopqrstuvwxyz' +as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ' +as_cr_Letters=$as_cr_letters$as_cr_LETTERS +as_cr_digits='0123456789' +as_cr_alnum=$as_cr_Letters$as_cr_digits + +ECHO_C= ECHO_N= ECHO_T= +case `echo -n x` in #((((( +-n*) + case `echo 'xy\c'` in + *c*) ECHO_T=' ';; # ECHO_T is single tab character. + xy) ECHO_C='\c';; + *) echo `echo ksh88 bug on AIX 6.1` > /dev/null + ECHO_T=' ';; + esac;; +*) + ECHO_N='-n';; +esac + +rm -f conf$$ conf$$.exe conf$$.file +if test -d conf$$.dir; then + rm -f conf$$.dir/conf$$.file +else + rm -f conf$$.dir + mkdir conf$$.dir 2>/dev/null +fi +if (echo >conf$$.file) 2>/dev/null; then + if ln -s conf$$.file conf$$ 2>/dev/null; then + as_ln_s='ln -s' + # ... but there are two gotchas: + # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail. + # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable. + # In both cases, we have to default to `cp -pR'. + ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe || + as_ln_s='cp -pR' + elif ln conf$$.file conf$$ 2>/dev/null; then + as_ln_s=ln + else + as_ln_s='cp -pR' + fi +else + as_ln_s='cp -pR' +fi +rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file +rmdir conf$$.dir 2>/dev/null + + +# as_fn_mkdir_p +# ------------- +# Create "$as_dir" as a directory, including parents if necessary. +as_fn_mkdir_p () +{ + + case $as_dir in #( + -*) as_dir=./$as_dir;; + esac + test -d "$as_dir" || eval $as_mkdir_p || { + as_dirs= + while :; do + case $as_dir in #( + *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'( + *) as_qdir=$as_dir;; + esac + as_dirs="'$as_qdir' $as_dirs" + as_dir=`$as_dirname -- "$as_dir" || +$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$as_dir" : 'X\(//\)[^/]' \| \ + X"$as_dir" : 'X\(//\)$' \| \ + X"$as_dir" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$as_dir" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + test -d "$as_dir" && break + done + test -z "$as_dirs" || eval "mkdir $as_dirs" + } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir" + + +} # as_fn_mkdir_p +if mkdir -p . 2>/dev/null; then + as_mkdir_p='mkdir -p "$as_dir"' +else + test -d ./-p && rmdir ./-p + as_mkdir_p=false +fi + + +# as_fn_executable_p FILE +# ----------------------- +# Test if FILE is an executable regular file. +as_fn_executable_p () +{ + test -f "$1" && test -x "$1" +} # as_fn_executable_p +as_test_x='test -x' +as_executable_p=as_fn_executable_p + +# Sed expression to map a string onto a valid CPP name. +as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'" + +# Sed expression to map a string onto a valid variable name. +as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'" + + +exec 6>&1 +## ----------------------------------- ## +## Main body of $CONFIG_STATUS script. ## +## ----------------------------------- ## +_ASEOF +test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1 + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +# Save the log message, to keep $0 and so on meaningful, and to +# report actual input values of CONFIG_FILES etc. instead of their +# values after options handling. +ac_log=" +This file was extended by gc $as_me 7.6.4, which was +generated by GNU Autoconf 2.69. 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"$delay_single_quote_subst"`' +exeext='`$ECHO "$exeext" | $SED "$delay_single_quote_subst"`' +lt_unset='`$ECHO "$lt_unset" | $SED "$delay_single_quote_subst"`' +lt_SP2NL='`$ECHO "$lt_SP2NL" | $SED "$delay_single_quote_subst"`' +lt_NL2SP='`$ECHO "$lt_NL2SP" | $SED "$delay_single_quote_subst"`' +lt_cv_to_host_file_cmd='`$ECHO "$lt_cv_to_host_file_cmd" | $SED "$delay_single_quote_subst"`' +lt_cv_to_tool_file_cmd='`$ECHO "$lt_cv_to_tool_file_cmd" | $SED "$delay_single_quote_subst"`' +reload_flag='`$ECHO "$reload_flag" | $SED "$delay_single_quote_subst"`' +reload_cmds='`$ECHO "$reload_cmds" | $SED "$delay_single_quote_subst"`' +OBJDUMP='`$ECHO "$OBJDUMP" | $SED "$delay_single_quote_subst"`' +deplibs_check_method='`$ECHO "$deplibs_check_method" | $SED "$delay_single_quote_subst"`' +file_magic_cmd='`$ECHO "$file_magic_cmd" | $SED "$delay_single_quote_subst"`' +file_magic_glob='`$ECHO "$file_magic_glob" | $SED "$delay_single_quote_subst"`' +want_nocaseglob='`$ECHO "$want_nocaseglob" | $SED "$delay_single_quote_subst"`' +DLLTOOL='`$ECHO "$DLLTOOL" | $SED "$delay_single_quote_subst"`' +sharedlib_from_linklib_cmd='`$ECHO "$sharedlib_from_linklib_cmd" | $SED "$delay_single_quote_subst"`' +AR='`$ECHO "$AR" | $SED "$delay_single_quote_subst"`' +AR_FLAGS='`$ECHO "$AR_FLAGS" | $SED "$delay_single_quote_subst"`' +archiver_list_spec='`$ECHO "$archiver_list_spec" | $SED "$delay_single_quote_subst"`' +STRIP='`$ECHO "$STRIP" | $SED "$delay_single_quote_subst"`' +RANLIB='`$ECHO "$RANLIB" | $SED "$delay_single_quote_subst"`' +old_postinstall_cmds='`$ECHO "$old_postinstall_cmds" | $SED "$delay_single_quote_subst"`' +old_postuninstall_cmds='`$ECHO "$old_postuninstall_cmds" | $SED "$delay_single_quote_subst"`' +old_archive_cmds='`$ECHO "$old_archive_cmds" | $SED "$delay_single_quote_subst"`' +lock_old_archive_extraction='`$ECHO "$lock_old_archive_extraction" | $SED "$delay_single_quote_subst"`' +CC='`$ECHO "$CC" | $SED "$delay_single_quote_subst"`' +CFLAGS='`$ECHO "$CFLAGS" | $SED "$delay_single_quote_subst"`' +compiler='`$ECHO "$compiler" | $SED "$delay_single_quote_subst"`' +GCC='`$ECHO "$GCC" | $SED "$delay_single_quote_subst"`' +lt_cv_sys_global_symbol_pipe='`$ECHO "$lt_cv_sys_global_symbol_pipe" | $SED "$delay_single_quote_subst"`' +lt_cv_sys_global_symbol_to_cdecl='`$ECHO "$lt_cv_sys_global_symbol_to_cdecl" | $SED "$delay_single_quote_subst"`' +lt_cv_sys_global_symbol_to_import='`$ECHO "$lt_cv_sys_global_symbol_to_import" | $SED "$delay_single_quote_subst"`' +lt_cv_sys_global_symbol_to_c_name_address='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address" | $SED "$delay_single_quote_subst"`' +lt_cv_sys_global_symbol_to_c_name_address_lib_prefix='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address_lib_prefix" | $SED "$delay_single_quote_subst"`' +lt_cv_nm_interface='`$ECHO "$lt_cv_nm_interface" | $SED "$delay_single_quote_subst"`' +nm_file_list_spec='`$ECHO "$nm_file_list_spec" | $SED "$delay_single_quote_subst"`' +lt_sysroot='`$ECHO "$lt_sysroot" | $SED "$delay_single_quote_subst"`' +lt_cv_truncate_bin='`$ECHO "$lt_cv_truncate_bin" | $SED "$delay_single_quote_subst"`' +objdir='`$ECHO "$objdir" | $SED "$delay_single_quote_subst"`' +MAGIC_CMD='`$ECHO "$MAGIC_CMD" | $SED "$delay_single_quote_subst"`' +lt_prog_compiler_no_builtin_flag='`$ECHO "$lt_prog_compiler_no_builtin_flag" | $SED "$delay_single_quote_subst"`' +lt_prog_compiler_pic='`$ECHO "$lt_prog_compiler_pic" | $SED "$delay_single_quote_subst"`' +lt_prog_compiler_wl='`$ECHO "$lt_prog_compiler_wl" | $SED "$delay_single_quote_subst"`' +lt_prog_compiler_static='`$ECHO "$lt_prog_compiler_static" | $SED "$delay_single_quote_subst"`' +lt_cv_prog_compiler_c_o='`$ECHO "$lt_cv_prog_compiler_c_o" | $SED "$delay_single_quote_subst"`' +need_locks='`$ECHO "$need_locks" | $SED "$delay_single_quote_subst"`' +MANIFEST_TOOL='`$ECHO "$MANIFEST_TOOL" | $SED "$delay_single_quote_subst"`' +DSYMUTIL='`$ECHO "$DSYMUTIL" | $SED "$delay_single_quote_subst"`' +NMEDIT='`$ECHO "$NMEDIT" | $SED "$delay_single_quote_subst"`' +LIPO='`$ECHO "$LIPO" | $SED "$delay_single_quote_subst"`' +OTOOL='`$ECHO "$OTOOL" | $SED "$delay_single_quote_subst"`' +OTOOL64='`$ECHO "$OTOOL64" | $SED "$delay_single_quote_subst"`' +libext='`$ECHO "$libext" | $SED "$delay_single_quote_subst"`' +shrext_cmds='`$ECHO "$shrext_cmds" | $SED "$delay_single_quote_subst"`' +extract_expsyms_cmds='`$ECHO "$extract_expsyms_cmds" | $SED "$delay_single_quote_subst"`' +archive_cmds_need_lc='`$ECHO "$archive_cmds_need_lc" | $SED "$delay_single_quote_subst"`' +enable_shared_with_static_runtimes='`$ECHO "$enable_shared_with_static_runtimes" | $SED "$delay_single_quote_subst"`' +export_dynamic_flag_spec='`$ECHO "$export_dynamic_flag_spec" | $SED "$delay_single_quote_subst"`' +whole_archive_flag_spec='`$ECHO "$whole_archive_flag_spec" | $SED "$delay_single_quote_subst"`' +compiler_needs_object='`$ECHO "$compiler_needs_object" | $SED "$delay_single_quote_subst"`' +old_archive_from_new_cmds='`$ECHO "$old_archive_from_new_cmds" | $SED "$delay_single_quote_subst"`' +old_archive_from_expsyms_cmds='`$ECHO "$old_archive_from_expsyms_cmds" | $SED "$delay_single_quote_subst"`' +archive_cmds='`$ECHO "$archive_cmds" | $SED "$delay_single_quote_subst"`' +archive_expsym_cmds='`$ECHO "$archive_expsym_cmds" | $SED "$delay_single_quote_subst"`' +module_cmds='`$ECHO "$module_cmds" | $SED "$delay_single_quote_subst"`' +module_expsym_cmds='`$ECHO "$module_expsym_cmds" | $SED "$delay_single_quote_subst"`' +with_gnu_ld='`$ECHO "$with_gnu_ld" | $SED "$delay_single_quote_subst"`' +allow_undefined_flag='`$ECHO "$allow_undefined_flag" | $SED "$delay_single_quote_subst"`' +no_undefined_flag='`$ECHO "$no_undefined_flag" | $SED "$delay_single_quote_subst"`' +hardcode_libdir_flag_spec='`$ECHO "$hardcode_libdir_flag_spec" | $SED "$delay_single_quote_subst"`' +hardcode_libdir_separator='`$ECHO "$hardcode_libdir_separator" | $SED "$delay_single_quote_subst"`' +hardcode_direct='`$ECHO "$hardcode_direct" | $SED "$delay_single_quote_subst"`' +hardcode_direct_absolute='`$ECHO "$hardcode_direct_absolute" | $SED "$delay_single_quote_subst"`' +hardcode_minus_L='`$ECHO "$hardcode_minus_L" | $SED "$delay_single_quote_subst"`' +hardcode_shlibpath_var='`$ECHO "$hardcode_shlibpath_var" | $SED "$delay_single_quote_subst"`' +hardcode_automatic='`$ECHO "$hardcode_automatic" | $SED "$delay_single_quote_subst"`' +inherit_rpath='`$ECHO "$inherit_rpath" | $SED "$delay_single_quote_subst"`' +link_all_deplibs='`$ECHO "$link_all_deplibs" | $SED "$delay_single_quote_subst"`' +always_export_symbols='`$ECHO "$always_export_symbols" | $SED "$delay_single_quote_subst"`' +export_symbols_cmds='`$ECHO "$export_symbols_cmds" | $SED "$delay_single_quote_subst"`' +exclude_expsyms='`$ECHO "$exclude_expsyms" | $SED "$delay_single_quote_subst"`' +include_expsyms='`$ECHO "$include_expsyms" | $SED "$delay_single_quote_subst"`' +prelink_cmds='`$ECHO "$prelink_cmds" | $SED "$delay_single_quote_subst"`' +postlink_cmds='`$ECHO "$postlink_cmds" | $SED "$delay_single_quote_subst"`' +file_list_spec='`$ECHO "$file_list_spec" | $SED "$delay_single_quote_subst"`' +variables_saved_for_relink='`$ECHO "$variables_saved_for_relink" | $SED "$delay_single_quote_subst"`' +need_lib_prefix='`$ECHO "$need_lib_prefix" | $SED "$delay_single_quote_subst"`' +need_version='`$ECHO "$need_version" | $SED "$delay_single_quote_subst"`' +version_type='`$ECHO "$version_type" | $SED "$delay_single_quote_subst"`' +runpath_var='`$ECHO "$runpath_var" | $SED "$delay_single_quote_subst"`' +shlibpath_var='`$ECHO "$shlibpath_var" | $SED "$delay_single_quote_subst"`' +shlibpath_overrides_runpath='`$ECHO "$shlibpath_overrides_runpath" | $SED "$delay_single_quote_subst"`' +libname_spec='`$ECHO "$libname_spec" | $SED "$delay_single_quote_subst"`' +library_names_spec='`$ECHO "$library_names_spec" | $SED "$delay_single_quote_subst"`' +soname_spec='`$ECHO "$soname_spec" | $SED "$delay_single_quote_subst"`' +install_override_mode='`$ECHO "$install_override_mode" | $SED "$delay_single_quote_subst"`' +postinstall_cmds='`$ECHO "$postinstall_cmds" | $SED "$delay_single_quote_subst"`' +postuninstall_cmds='`$ECHO "$postuninstall_cmds" | $SED "$delay_single_quote_subst"`' +finish_cmds='`$ECHO "$finish_cmds" | $SED "$delay_single_quote_subst"`' +finish_eval='`$ECHO "$finish_eval" | $SED "$delay_single_quote_subst"`' +hardcode_into_libs='`$ECHO "$hardcode_into_libs" | $SED "$delay_single_quote_subst"`' +sys_lib_search_path_spec='`$ECHO "$sys_lib_search_path_spec" | $SED "$delay_single_quote_subst"`' +configure_time_dlsearch_path='`$ECHO "$configure_time_dlsearch_path" | $SED "$delay_single_quote_subst"`' +configure_time_lt_sys_library_path='`$ECHO "$configure_time_lt_sys_library_path" | $SED "$delay_single_quote_subst"`' +hardcode_action='`$ECHO "$hardcode_action" | $SED "$delay_single_quote_subst"`' +enable_dlopen='`$ECHO "$enable_dlopen" | $SED "$delay_single_quote_subst"`' +enable_dlopen_self='`$ECHO "$enable_dlopen_self" | $SED "$delay_single_quote_subst"`' +enable_dlopen_self_static='`$ECHO "$enable_dlopen_self_static" | $SED "$delay_single_quote_subst"`' +old_striplib='`$ECHO "$old_striplib" | $SED "$delay_single_quote_subst"`' +striplib='`$ECHO "$striplib" | $SED "$delay_single_quote_subst"`' +compiler_lib_search_dirs='`$ECHO "$compiler_lib_search_dirs" | $SED "$delay_single_quote_subst"`' +predep_objects='`$ECHO "$predep_objects" | $SED "$delay_single_quote_subst"`' +postdep_objects='`$ECHO "$postdep_objects" | $SED "$delay_single_quote_subst"`' +predeps='`$ECHO "$predeps" | $SED "$delay_single_quote_subst"`' +postdeps='`$ECHO "$postdeps" | $SED "$delay_single_quote_subst"`' +compiler_lib_search_path='`$ECHO "$compiler_lib_search_path" | $SED "$delay_single_quote_subst"`' +LD_CXX='`$ECHO "$LD_CXX" | $SED "$delay_single_quote_subst"`' +reload_flag_CXX='`$ECHO "$reload_flag_CXX" | $SED "$delay_single_quote_subst"`' +reload_cmds_CXX='`$ECHO "$reload_cmds_CXX" | $SED "$delay_single_quote_subst"`' +old_archive_cmds_CXX='`$ECHO "$old_archive_cmds_CXX" | $SED "$delay_single_quote_subst"`' +compiler_CXX='`$ECHO "$compiler_CXX" | $SED "$delay_single_quote_subst"`' +GCC_CXX='`$ECHO "$GCC_CXX" | $SED "$delay_single_quote_subst"`' +lt_prog_compiler_no_builtin_flag_CXX='`$ECHO "$lt_prog_compiler_no_builtin_flag_CXX" | $SED "$delay_single_quote_subst"`' +lt_prog_compiler_pic_CXX='`$ECHO "$lt_prog_compiler_pic_CXX" | $SED "$delay_single_quote_subst"`' +lt_prog_compiler_wl_CXX='`$ECHO "$lt_prog_compiler_wl_CXX" | $SED "$delay_single_quote_subst"`' +lt_prog_compiler_static_CXX='`$ECHO "$lt_prog_compiler_static_CXX" | $SED "$delay_single_quote_subst"`' +lt_cv_prog_compiler_c_o_CXX='`$ECHO "$lt_cv_prog_compiler_c_o_CXX" | $SED "$delay_single_quote_subst"`' +archive_cmds_need_lc_CXX='`$ECHO "$archive_cmds_need_lc_CXX" | $SED "$delay_single_quote_subst"`' +enable_shared_with_static_runtimes_CXX='`$ECHO "$enable_shared_with_static_runtimes_CXX" | $SED "$delay_single_quote_subst"`' +export_dynamic_flag_spec_CXX='`$ECHO "$export_dynamic_flag_spec_CXX" | $SED "$delay_single_quote_subst"`' +whole_archive_flag_spec_CXX='`$ECHO "$whole_archive_flag_spec_CXX" | $SED "$delay_single_quote_subst"`' +compiler_needs_object_CXX='`$ECHO "$compiler_needs_object_CXX" | $SED "$delay_single_quote_subst"`' +old_archive_from_new_cmds_CXX='`$ECHO "$old_archive_from_new_cmds_CXX" | $SED "$delay_single_quote_subst"`' +old_archive_from_expsyms_cmds_CXX='`$ECHO "$old_archive_from_expsyms_cmds_CXX" | $SED "$delay_single_quote_subst"`' +archive_cmds_CXX='`$ECHO "$archive_cmds_CXX" | $SED "$delay_single_quote_subst"`' +archive_expsym_cmds_CXX='`$ECHO "$archive_expsym_cmds_CXX" | $SED "$delay_single_quote_subst"`' +module_cmds_CXX='`$ECHO "$module_cmds_CXX" | $SED "$delay_single_quote_subst"`' +module_expsym_cmds_CXX='`$ECHO "$module_expsym_cmds_CXX" | $SED "$delay_single_quote_subst"`' +with_gnu_ld_CXX='`$ECHO "$with_gnu_ld_CXX" | $SED "$delay_single_quote_subst"`' +allow_undefined_flag_CXX='`$ECHO "$allow_undefined_flag_CXX" | $SED "$delay_single_quote_subst"`' +no_undefined_flag_CXX='`$ECHO "$no_undefined_flag_CXX" | $SED "$delay_single_quote_subst"`' +hardcode_libdir_flag_spec_CXX='`$ECHO "$hardcode_libdir_flag_spec_CXX" | $SED "$delay_single_quote_subst"`' +hardcode_libdir_separator_CXX='`$ECHO "$hardcode_libdir_separator_CXX" | $SED "$delay_single_quote_subst"`' +hardcode_direct_CXX='`$ECHO "$hardcode_direct_CXX" | $SED "$delay_single_quote_subst"`' +hardcode_direct_absolute_CXX='`$ECHO "$hardcode_direct_absolute_CXX" | $SED "$delay_single_quote_subst"`' +hardcode_minus_L_CXX='`$ECHO "$hardcode_minus_L_CXX" | $SED "$delay_single_quote_subst"`' +hardcode_shlibpath_var_CXX='`$ECHO "$hardcode_shlibpath_var_CXX" | $SED "$delay_single_quote_subst"`' +hardcode_automatic_CXX='`$ECHO "$hardcode_automatic_CXX" | $SED "$delay_single_quote_subst"`' +inherit_rpath_CXX='`$ECHO "$inherit_rpath_CXX" | $SED "$delay_single_quote_subst"`' +link_all_deplibs_CXX='`$ECHO "$link_all_deplibs_CXX" | $SED "$delay_single_quote_subst"`' +always_export_symbols_CXX='`$ECHO "$always_export_symbols_CXX" | $SED "$delay_single_quote_subst"`' +export_symbols_cmds_CXX='`$ECHO "$export_symbols_cmds_CXX" | $SED "$delay_single_quote_subst"`' +exclude_expsyms_CXX='`$ECHO "$exclude_expsyms_CXX" | $SED "$delay_single_quote_subst"`' +include_expsyms_CXX='`$ECHO "$include_expsyms_CXX" | $SED "$delay_single_quote_subst"`' +prelink_cmds_CXX='`$ECHO "$prelink_cmds_CXX" | $SED "$delay_single_quote_subst"`' +postlink_cmds_CXX='`$ECHO "$postlink_cmds_CXX" | $SED "$delay_single_quote_subst"`' +file_list_spec_CXX='`$ECHO "$file_list_spec_CXX" | $SED "$delay_single_quote_subst"`' +hardcode_action_CXX='`$ECHO "$hardcode_action_CXX" | $SED "$delay_single_quote_subst"`' +compiler_lib_search_dirs_CXX='`$ECHO "$compiler_lib_search_dirs_CXX" | $SED "$delay_single_quote_subst"`' +predep_objects_CXX='`$ECHO "$predep_objects_CXX" | $SED "$delay_single_quote_subst"`' +postdep_objects_CXX='`$ECHO "$postdep_objects_CXX" | $SED "$delay_single_quote_subst"`' +predeps_CXX='`$ECHO "$predeps_CXX" | $SED "$delay_single_quote_subst"`' +postdeps_CXX='`$ECHO "$postdeps_CXX" | $SED "$delay_single_quote_subst"`' +compiler_lib_search_path_CXX='`$ECHO "$compiler_lib_search_path_CXX" | $SED "$delay_single_quote_subst"`' + +LTCC='$LTCC' +LTCFLAGS='$LTCFLAGS' +compiler='$compiler_DEFAULT' + +# A function that is used when there is no print builtin or printf. +func_fallback_echo () +{ + eval 'cat <<_LTECHO_EOF +\$1 +_LTECHO_EOF' +} + +# Quote evaled strings. +for var in SHELL \ +ECHO \ +PATH_SEPARATOR \ +SED \ +GREP \ +EGREP \ +FGREP \ +LD \ +NM \ +LN_S \ +lt_SP2NL \ +lt_NL2SP \ +reload_flag \ +OBJDUMP \ +deplibs_check_method \ +file_magic_cmd \ +file_magic_glob \ +want_nocaseglob \ +DLLTOOL \ +sharedlib_from_linklib_cmd \ +AR \ +AR_FLAGS \ +archiver_list_spec \ +STRIP \ +RANLIB \ +CC \ +CFLAGS \ +compiler \ +lt_cv_sys_global_symbol_pipe \ +lt_cv_sys_global_symbol_to_cdecl \ +lt_cv_sys_global_symbol_to_import \ +lt_cv_sys_global_symbol_to_c_name_address \ +lt_cv_sys_global_symbol_to_c_name_address_lib_prefix \ +lt_cv_nm_interface \ +nm_file_list_spec \ +lt_cv_truncate_bin \ +lt_prog_compiler_no_builtin_flag \ +lt_prog_compiler_pic \ +lt_prog_compiler_wl \ +lt_prog_compiler_static \ +lt_cv_prog_compiler_c_o \ +need_locks \ +MANIFEST_TOOL \ +DSYMUTIL \ +NMEDIT \ +LIPO \ +OTOOL \ +OTOOL64 \ +shrext_cmds \ +export_dynamic_flag_spec \ +whole_archive_flag_spec \ +compiler_needs_object \ +with_gnu_ld \ +allow_undefined_flag \ +no_undefined_flag \ +hardcode_libdir_flag_spec \ +hardcode_libdir_separator \ +exclude_expsyms \ +include_expsyms \ +file_list_spec \ +variables_saved_for_relink \ +libname_spec \ +library_names_spec \ +soname_spec \ +install_override_mode \ +finish_eval \ +old_striplib \ +striplib \ +compiler_lib_search_dirs \ +predep_objects \ +postdep_objects \ +predeps \ +postdeps \ +compiler_lib_search_path \ +LD_CXX \ +reload_flag_CXX \ +compiler_CXX \ +lt_prog_compiler_no_builtin_flag_CXX \ +lt_prog_compiler_pic_CXX \ +lt_prog_compiler_wl_CXX \ +lt_prog_compiler_static_CXX \ +lt_cv_prog_compiler_c_o_CXX \ +export_dynamic_flag_spec_CXX \ +whole_archive_flag_spec_CXX \ +compiler_needs_object_CXX \ +with_gnu_ld_CXX \ +allow_undefined_flag_CXX \ +no_undefined_flag_CXX \ +hardcode_libdir_flag_spec_CXX \ +hardcode_libdir_separator_CXX \ +exclude_expsyms_CXX \ +include_expsyms_CXX \ +file_list_spec_CXX \ +compiler_lib_search_dirs_CXX \ +predep_objects_CXX \ +postdep_objects_CXX \ +predeps_CXX \ +postdeps_CXX \ +compiler_lib_search_path_CXX; do + case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in + *[\\\\\\\`\\"\\\$]*) + eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\"" ## exclude from sc_prohibit_nested_quotes + ;; + *) + eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\"" + ;; + esac +done + +# Double-quote double-evaled strings. +for var in reload_cmds \ +old_postinstall_cmds \ +old_postuninstall_cmds \ +old_archive_cmds \ +extract_expsyms_cmds \ +old_archive_from_new_cmds \ +old_archive_from_expsyms_cmds \ +archive_cmds \ +archive_expsym_cmds \ +module_cmds \ +module_expsym_cmds \ +export_symbols_cmds \ +prelink_cmds \ +postlink_cmds \ +postinstall_cmds \ +postuninstall_cmds \ +finish_cmds \ +sys_lib_search_path_spec \ +configure_time_dlsearch_path \ +configure_time_lt_sys_library_path \ +reload_cmds_CXX \ +old_archive_cmds_CXX \ +old_archive_from_new_cmds_CXX \ +old_archive_from_expsyms_cmds_CXX \ +archive_cmds_CXX \ +archive_expsym_cmds_CXX \ +module_cmds_CXX \ +module_expsym_cmds_CXX \ +export_symbols_cmds_CXX \ +prelink_cmds_CXX \ +postlink_cmds_CXX; do + case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in + *[\\\\\\\`\\"\\\$]*) + eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\"" ## exclude from sc_prohibit_nested_quotes + ;; + *) + eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\"" + ;; + esac +done + +ac_aux_dir='$ac_aux_dir' + +# See if we are running on zsh, and set the options that allow our +# commands through without removal of \ escapes INIT. +if test -n "\${ZSH_VERSION+set}"; then + setopt NO_GLOB_SUBST +fi + + + PACKAGE='$PACKAGE' + VERSION='$VERSION' + RM='$RM' + ofile='$ofile' + + + + + + srcdir="${srcdir}" + host=${host} + CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} + CC="${CC}" + DEFS="$DEFS" + +_ACEOF + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 + +# Handling of arguments. +for ac_config_target in $ac_config_targets +do + case $ac_config_target in + "include/config.h") CONFIG_HEADERS="$CONFIG_HEADERS include/config.h" ;; + "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;; + "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;; + "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;; + "bdw-gc.pc") CONFIG_FILES="$CONFIG_FILES bdw-gc.pc" ;; + "default") CONFIG_COMMANDS="$CONFIG_COMMANDS default" ;; + + *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;; + esac +done + + +# If the user did not use the arguments to specify the items to instantiate, +# then the envvar interface is used. Set only those that are not. +# We use the long form for the default assignment because of an extremely +# bizarre bug on SunOS 4.1.3. +if $ac_need_defaults; then + test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files + test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers + test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands +fi + +# Have a temporary directory for convenience. Make it in the build tree +# simply because there is no reason against having it here, and in addition, +# creating and moving files from /tmp can sometimes cause problems. +# Hook for its removal unless debugging. +# Note that there is a small window in which the directory will not be cleaned: +# after its creation but before its name has been assigned to `$tmp'. +$debug || +{ + tmp= ac_tmp= + trap 'exit_status=$? + : "${ac_tmp:=$tmp}" + { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status +' 0 + trap 'as_fn_exit 1' 1 2 13 15 +} +# Create a (secure) tmp directory for tmp files. + +{ + tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` && + test -d "$tmp" +} || +{ + tmp=./conf$$-$RANDOM + (umask 077 && mkdir "$tmp") +} || as_fn_error $? "cannot create a temporary directory in ." 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"could not setup config files machinery" "$LINENO" 5 +_ACEOF + +# VPATH may cause trouble with some makes, so we remove sole $(srcdir), +# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and +# trailing colons and then remove the whole line if VPATH becomes empty +# (actually we leave an empty line to preserve line numbers). +if test "x$srcdir" = x.; then + ac_vpsub='/^[ ]*VPATH[ ]*=[ ]*/{ +h +s/// +s/^/:/ +s/[ ]*$/:/ +s/:\$(srcdir):/:/g +s/:\${srcdir}:/:/g +s/:@srcdir@:/:/g +s/^:*// +s/:*$// +x +s/\(=[ ]*\).*/\1/ +G +s/\n// +s/^[^=]*=[ ]*$// +}' +fi + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +fi # test -n "$CONFIG_FILES" + +# Set up the scripts for CONFIG_HEADERS section. +# No need to generate them if there are no CONFIG_HEADERS. +# This happens for instance with `./config.status Makefile'. +if test -n "$CONFIG_HEADERS"; then +cat >"$ac_tmp/defines.awk" <<\_ACAWK || +BEGIN { +_ACEOF + +# Transform confdefs.h into an awk script `defines.awk', embedded as +# here-document in config.status, that substitutes the proper values into +# config.h.in to produce config.h. + +# Create a delimiter string that does not exist in confdefs.h, to ease +# handling of long lines. +ac_delim='%!_!# ' +for ac_last_try in false false :; do + ac_tt=`sed -n "/$ac_delim/p" confdefs.h` + if test -z "$ac_tt"; then + break + elif $ac_last_try; then + as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5 + else + ac_delim="$ac_delim!$ac_delim _$ac_delim!! " + fi +done + +# For the awk script, D is an array of macro values keyed by name, +# likewise P contains macro parameters if any. 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This is necessary, for example, + # in the case of _POSIX_SOURCE, which is predefined and required + # on some systems where configure will not decide to define it. + if (defundef == "undef") { + print "/*", prefix defundef, macro, "*/" + next + } + } +} +{ print } +_ACAWK +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 + as_fn_error $? "could not setup config headers machinery" "$LINENO" 5 +fi # test -n "$CONFIG_HEADERS" + + +eval set X " :F $CONFIG_FILES :H $CONFIG_HEADERS :C $CONFIG_COMMANDS" +shift +for ac_tag +do + case $ac_tag in + :[FHLC]) ac_mode=$ac_tag; continue;; + esac + case $ac_mode$ac_tag in + :[FHL]*:*);; + :L* | :C*:*) as_fn_error $? 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"could not create $ac_file" "$LINENO" 5 ;; + esac + ;; + esac + + ac_dir=`$as_dirname -- "$ac_file" || +$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$ac_file" : 'X\(//\)[^/]' \| \ + X"$ac_file" : 'X\(//\)$' \| \ + X"$ac_file" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$ac_file" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + as_dir="$ac_dir"; as_fn_mkdir_p + ac_builddir=. + +case "$ac_dir" in +.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;; +*) + ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'` + # A ".." for each directory in $ac_dir_suffix. + ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'` + case $ac_top_builddir_sub in + "") ac_top_builddir_sub=. ac_top_build_prefix= ;; + *) ac_top_build_prefix=$ac_top_builddir_sub/ ;; + esac ;; +esac +ac_abs_top_builddir=$ac_pwd +ac_abs_builddir=$ac_pwd$ac_dir_suffix +# for backward compatibility: +ac_top_builddir=$ac_top_build_prefix + +case $srcdir in + .) # We are building in place. + ac_srcdir=. + ac_top_srcdir=$ac_top_builddir_sub + ac_abs_top_srcdir=$ac_pwd ;; + [\\/]* | ?:[\\/]* ) # Absolute name. + ac_srcdir=$srcdir$ac_dir_suffix; + ac_top_srcdir=$srcdir + ac_abs_top_srcdir=$srcdir ;; + *) # Relative name. + ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix + ac_top_srcdir=$ac_top_build_prefix$srcdir + ac_abs_top_srcdir=$ac_pwd/$srcdir ;; +esac +ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix + + + case $ac_mode in + :F) + # + # CONFIG_FILE + # + + case $INSTALL in + [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;; + *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;; + esac + ac_MKDIR_P=$MKDIR_P + case $MKDIR_P in + [\\/$]* | ?:[\\/]* ) ;; + */*) ac_MKDIR_P=$ac_top_build_prefix$MKDIR_P ;; + esac +_ACEOF + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +# If the template does not know about datarootdir, expand it. +# FIXME: This hack should be removed a few years after 2.60. +ac_datarootdir_hack=; ac_datarootdir_seen= +ac_sed_dataroot=' +/datarootdir/ { + p + q +} +/@datadir@/p +/@docdir@/p +/@infodir@/p +/@localedir@/p +/@mandir@/p' +case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in +*datarootdir*) ac_datarootdir_seen=yes;; +*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*) + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5 +$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;} +_ACEOF +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 + ac_datarootdir_hack=' + s&@datadir@&$datadir&g + s&@docdir@&$docdir&g + s&@infodir@&$infodir&g + s&@localedir@&$localedir&g + s&@mandir@&$mandir&g + s&\\\${datarootdir}&$datarootdir&g' ;; +esac +_ACEOF + +# Neutralize VPATH when `$srcdir' = `.'. +# Shell code in configure.ac might set extrasub. +# FIXME: do we really want to maintain this feature? +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 +ac_sed_extra="$ac_vpsub +$extrasub +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +:t +/@[a-zA-Z_][a-zA-Z_0-9]*@/!b +s|@configure_input@|$ac_sed_conf_input|;t t +s&@top_builddir@&$ac_top_builddir_sub&;t t +s&@top_build_prefix@&$ac_top_build_prefix&;t t +s&@srcdir@&$ac_srcdir&;t t +s&@abs_srcdir@&$ac_abs_srcdir&;t t +s&@top_srcdir@&$ac_top_srcdir&;t t +s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t +s&@builddir@&$ac_builddir&;t t +s&@abs_builddir@&$ac_abs_builddir&;t t +s&@abs_top_builddir@&$ac_abs_top_builddir&;t t +s&@INSTALL@&$ac_INSTALL&;t t +s&@MKDIR_P@&$ac_MKDIR_P&;t t +$ac_datarootdir_hack +" +eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \ + >$ac_tmp/out || as_fn_error $? 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We invoke sed twice because it is the + # simplest approach to changing $(DEPDIR) to its actual value in the + # expansion. + for file in `sed -n " + s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \ + sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g'`; do + # Make sure the directory exists. + test -f "$dirpart/$file" && continue + fdir=`$as_dirname -- "$file" || +$as_expr X"$file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$file" : 'X\(//\)[^/]' \| \ + X"$file" : 'X\(//\)$' \| \ + X"$file" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$file" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + as_dir=$dirpart/$fdir; as_fn_mkdir_p + # echo "creating $dirpart/$file" + echo '# dummy' > "$dirpart/$file" + done + done +} + ;; + "libtool":C) + + # See if we are running on zsh, and set the options that allow our + # commands through without removal of \ escapes. + if test -n "${ZSH_VERSION+set}"; then + setopt NO_GLOB_SUBST + fi + + cfgfile=${ofile}T + trap "$RM \"$cfgfile\"; exit 1" 1 2 15 + $RM "$cfgfile" + + cat <<_LT_EOF >> "$cfgfile" +#! $SHELL +# Generated automatically by $as_me ($PACKAGE) $VERSION +# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`: +# NOTE: Changes made to this file will be lost: look at ltmain.sh. + +# Provide generalized library-building support services. +# Written by Gordon Matzigkeit, 1996 + +# Copyright (C) 2014 Free Software Foundation, Inc. +# This is free software; see the source for copying conditions. There is NO +# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + +# GNU Libtool is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of of the License, or +# (at your option) any later version. +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program or library that is built +# using GNU Libtool, you may include this file under the same +# distribution terms that you use for the rest of that program. +# +# GNU Libtool is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + + +# The names of the tagged configurations supported by this script. +available_tags='CXX ' + +# Configured defaults for sys_lib_dlsearch_path munging. +: \${LT_SYS_LIBRARY_PATH="$configure_time_lt_sys_library_path"} + +# ### BEGIN LIBTOOL CONFIG + +# Which release of libtool.m4 was used? +macro_version=$macro_version +macro_revision=$macro_revision + +# Whether or not to build shared libraries. +build_libtool_libs=$enable_shared + +# Whether or not to build static libraries. +build_old_libs=$enable_static + +# What type of objects to build. +pic_mode=$pic_mode + +# Whether or not to optimize for fast installation. +fast_install=$enable_fast_install + +# Shared archive member basename,for filename based shared library versioning on AIX. +shared_archive_member_spec=$shared_archive_member_spec + +# Shell to use when invoking shell scripts. +SHELL=$lt_SHELL + +# An echo program that protects backslashes. +ECHO=$lt_ECHO + +# The PATH separator for the build system. +PATH_SEPARATOR=$lt_PATH_SEPARATOR + +# The host system. +host_alias=$host_alias +host=$host +host_os=$host_os + +# The build system. +build_alias=$build_alias +build=$build +build_os=$build_os + +# A sed program that does not truncate output. +SED=$lt_SED + +# Sed that helps us avoid accidentally triggering echo(1) options like -n. +Xsed="\$SED -e 1s/^X//" + +# A grep program that handles long lines. +GREP=$lt_GREP + +# An ERE matcher. +EGREP=$lt_EGREP + +# A literal string matcher. +FGREP=$lt_FGREP + +# A BSD- or MS-compatible name lister. +NM=$lt_NM + +# Whether we need soft or hard links. +LN_S=$lt_LN_S + +# What is the maximum length of a command? +max_cmd_len=$max_cmd_len + +# Object file suffix (normally "o"). +objext=$ac_objext + +# Executable file suffix (normally ""). +exeext=$exeext + +# whether the shell understands "unset". +lt_unset=$lt_unset + +# turn spaces into newlines. +SP2NL=$lt_lt_SP2NL + +# turn newlines into spaces. +NL2SP=$lt_lt_NL2SP + +# convert \$build file names to \$host format. +to_host_file_cmd=$lt_cv_to_host_file_cmd + +# convert \$build files to toolchain format. +to_tool_file_cmd=$lt_cv_to_tool_file_cmd + +# An object symbol dumper. +OBJDUMP=$lt_OBJDUMP + +# Method to check whether dependent libraries are shared objects. +deplibs_check_method=$lt_deplibs_check_method + +# Command to use when deplibs_check_method = "file_magic". +file_magic_cmd=$lt_file_magic_cmd + +# How to find potential files when deplibs_check_method = "file_magic". +file_magic_glob=$lt_file_magic_glob + +# Find potential files using nocaseglob when deplibs_check_method = "file_magic". +want_nocaseglob=$lt_want_nocaseglob + +# DLL creation program. +DLLTOOL=$lt_DLLTOOL + +# Command to associate shared and link libraries. +sharedlib_from_linklib_cmd=$lt_sharedlib_from_linklib_cmd + +# The archiver. +AR=$lt_AR + +# Flags to create an archive. +AR_FLAGS=$lt_AR_FLAGS + +# How to feed a file listing to the archiver. +archiver_list_spec=$lt_archiver_list_spec + +# A symbol stripping program. +STRIP=$lt_STRIP + +# Commands used to install an old-style archive. +RANLIB=$lt_RANLIB +old_postinstall_cmds=$lt_old_postinstall_cmds +old_postuninstall_cmds=$lt_old_postuninstall_cmds + +# Whether to use a lock for old archive extraction. +lock_old_archive_extraction=$lock_old_archive_extraction + +# A C compiler. +LTCC=$lt_CC + +# LTCC compiler flags. +LTCFLAGS=$lt_CFLAGS + +# Take the output of nm and produce a listing of raw symbols and C names. +global_symbol_pipe=$lt_lt_cv_sys_global_symbol_pipe + +# Transform the output of nm in a proper C declaration. +global_symbol_to_cdecl=$lt_lt_cv_sys_global_symbol_to_cdecl + +# Transform the output of nm into a list of symbols to manually relocate. +global_symbol_to_import=$lt_lt_cv_sys_global_symbol_to_import + +# Transform the output of nm in a C name address pair. +global_symbol_to_c_name_address=$lt_lt_cv_sys_global_symbol_to_c_name_address + +# Transform the output of nm in a C name address pair when lib prefix is needed. +global_symbol_to_c_name_address_lib_prefix=$lt_lt_cv_sys_global_symbol_to_c_name_address_lib_prefix + +# The name lister interface. +nm_interface=$lt_lt_cv_nm_interface + +# Specify filename containing input files for \$NM. +nm_file_list_spec=$lt_nm_file_list_spec + +# The root where to search for dependent libraries,and where our libraries should be installed. +lt_sysroot=$lt_sysroot + +# Command to truncate a binary pipe. +lt_truncate_bin=$lt_lt_cv_truncate_bin + +# The name of the directory that contains temporary libtool files. +objdir=$objdir + +# Used to examine libraries when file_magic_cmd begins with "file". +MAGIC_CMD=$MAGIC_CMD + +# Must we lock files when doing compilation? +need_locks=$lt_need_locks + +# Manifest tool. +MANIFEST_TOOL=$lt_MANIFEST_TOOL + +# Tool to manipulate archived DWARF debug symbol files on Mac OS X. +DSYMUTIL=$lt_DSYMUTIL + +# Tool to change global to local symbols on Mac OS X. +NMEDIT=$lt_NMEDIT + +# Tool to manipulate fat objects and archives on Mac OS X. +LIPO=$lt_LIPO + +# ldd/readelf like tool for Mach-O binaries on Mac OS X. +OTOOL=$lt_OTOOL + +# ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4. +OTOOL64=$lt_OTOOL64 + +# Old archive suffix (normally "a"). +libext=$libext + +# Shared library suffix (normally ".so"). +shrext_cmds=$lt_shrext_cmds + +# The commands to extract the exported symbol list from a shared archive. +extract_expsyms_cmds=$lt_extract_expsyms_cmds + +# Variables whose values should be saved in libtool wrapper scripts and +# restored at link time. +variables_saved_for_relink=$lt_variables_saved_for_relink + +# Do we need the "lib" prefix for modules? +need_lib_prefix=$need_lib_prefix + +# Do we need a version for libraries? +need_version=$need_version + +# Library versioning type. +version_type=$version_type + +# Shared library runtime path variable. +runpath_var=$runpath_var + +# Shared library path variable. +shlibpath_var=$shlibpath_var + +# Is shlibpath searched before the hard-coded library search path? +shlibpath_overrides_runpath=$shlibpath_overrides_runpath + +# Format of library name prefix. +libname_spec=$lt_libname_spec + +# List of archive names. First name is the real one, the rest are links. +# The last name is the one that the linker finds with -lNAME +library_names_spec=$lt_library_names_spec + +# The coded name of the library, if different from the real name. +soname_spec=$lt_soname_spec + +# Permission mode override for installation of shared libraries. +install_override_mode=$lt_install_override_mode + +# Command to use after installation of a shared archive. +postinstall_cmds=$lt_postinstall_cmds + +# Command to use after uninstallation of a shared archive. +postuninstall_cmds=$lt_postuninstall_cmds + +# Commands used to finish a libtool library installation in a directory. +finish_cmds=$lt_finish_cmds + +# As "finish_cmds", except a single script fragment to be evaled but +# not shown. +finish_eval=$lt_finish_eval + +# Whether we should hardcode library paths into libraries. +hardcode_into_libs=$hardcode_into_libs + +# Compile-time system search path for libraries. +sys_lib_search_path_spec=$lt_sys_lib_search_path_spec + +# Detected run-time system search path for libraries. +sys_lib_dlsearch_path_spec=$lt_configure_time_dlsearch_path + +# Explicit LT_SYS_LIBRARY_PATH set during ./configure time. +configure_time_lt_sys_library_path=$lt_configure_time_lt_sys_library_path + +# Whether dlopen is supported. +dlopen_support=$enable_dlopen + +# Whether dlopen of programs is supported. +dlopen_self=$enable_dlopen_self + +# Whether dlopen of statically linked programs is supported. +dlopen_self_static=$enable_dlopen_self_static + +# Commands to strip libraries. +old_striplib=$lt_old_striplib +striplib=$lt_striplib + + +# The linker used to build libraries. +LD=$lt_LD + +# How to create reloadable object files. +reload_flag=$lt_reload_flag +reload_cmds=$lt_reload_cmds + +# Commands used to build an old-style archive. +old_archive_cmds=$lt_old_archive_cmds + +# A language specific compiler. +CC=$lt_compiler + +# Is the compiler the GNU compiler? +with_gcc=$GCC + +# Compiler flag to turn off builtin functions. +no_builtin_flag=$lt_lt_prog_compiler_no_builtin_flag + +# Additional compiler flags for building library objects. +pic_flag=$lt_lt_prog_compiler_pic + +# How to pass a linker flag through the compiler. +wl=$lt_lt_prog_compiler_wl + +# Compiler flag to prevent dynamic linking. +link_static_flag=$lt_lt_prog_compiler_static + +# Does compiler simultaneously support -c and -o options? +compiler_c_o=$lt_lt_cv_prog_compiler_c_o + +# Whether or not to add -lc for building shared libraries. +build_libtool_need_lc=$archive_cmds_need_lc + +# Whether or not to disallow shared libs when runtime libs are static. +allow_libtool_libs_with_static_runtimes=$enable_shared_with_static_runtimes + +# Compiler flag to allow reflexive dlopens. +export_dynamic_flag_spec=$lt_export_dynamic_flag_spec + +# Compiler flag to generate shared objects directly from archives. +whole_archive_flag_spec=$lt_whole_archive_flag_spec + +# Whether the compiler copes with passing no objects directly. +compiler_needs_object=$lt_compiler_needs_object + +# Create an old-style archive from a shared archive. +old_archive_from_new_cmds=$lt_old_archive_from_new_cmds + +# Create a temporary old-style archive to link instead of a shared archive. +old_archive_from_expsyms_cmds=$lt_old_archive_from_expsyms_cmds + +# Commands used to build a shared archive. +archive_cmds=$lt_archive_cmds +archive_expsym_cmds=$lt_archive_expsym_cmds + +# Commands used to build a loadable module if different from building +# a shared archive. +module_cmds=$lt_module_cmds +module_expsym_cmds=$lt_module_expsym_cmds + +# Whether we are building with GNU ld or not. +with_gnu_ld=$lt_with_gnu_ld + +# Flag that allows shared libraries with undefined symbols to be built. +allow_undefined_flag=$lt_allow_undefined_flag + +# Flag that enforces no undefined symbols. +no_undefined_flag=$lt_no_undefined_flag + +# Flag to hardcode \$libdir into a binary during linking. +# This must work even if \$libdir does not exist +hardcode_libdir_flag_spec=$lt_hardcode_libdir_flag_spec + +# Whether we need a single "-rpath" flag with a separated argument. +hardcode_libdir_separator=$lt_hardcode_libdir_separator + +# Set to "yes" if using DIR/libNAME\$shared_ext during linking hardcodes +# DIR into the resulting binary. +hardcode_direct=$hardcode_direct + +# Set to "yes" if using DIR/libNAME\$shared_ext during linking hardcodes +# DIR into the resulting binary and the resulting library dependency is +# "absolute",i.e impossible to change by setting \$shlibpath_var if the +# library is relocated. +hardcode_direct_absolute=$hardcode_direct_absolute + +# Set to "yes" if using the -LDIR flag during linking hardcodes DIR +# into the resulting binary. +hardcode_minus_L=$hardcode_minus_L + +# Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR +# into the resulting binary. +hardcode_shlibpath_var=$hardcode_shlibpath_var + +# Set to "yes" if building a shared library automatically hardcodes DIR +# into the library and all subsequent libraries and executables linked +# against it. +hardcode_automatic=$hardcode_automatic + +# Set to yes if linker adds runtime paths of dependent libraries +# to runtime path list. +inherit_rpath=$inherit_rpath + +# Whether libtool must link a program against all its dependency libraries. +link_all_deplibs=$link_all_deplibs + +# Set to "yes" if exported symbols are required. +always_export_symbols=$always_export_symbols + +# The commands to list exported symbols. +export_symbols_cmds=$lt_export_symbols_cmds + +# Symbols that should not be listed in the preloaded symbols. +exclude_expsyms=$lt_exclude_expsyms + +# Symbols that must always be exported. +include_expsyms=$lt_include_expsyms + +# Commands necessary for linking programs (against libraries) with templates. +prelink_cmds=$lt_prelink_cmds + +# Commands necessary for finishing linking programs. +postlink_cmds=$lt_postlink_cmds + +# Specify filename containing input files. +file_list_spec=$lt_file_list_spec + +# How to hardcode a shared library path into an executable. +hardcode_action=$hardcode_action + +# The directories searched by this compiler when creating a shared library. +compiler_lib_search_dirs=$lt_compiler_lib_search_dirs + +# Dependencies to place before and after the objects being linked to +# create a shared library. +predep_objects=$lt_predep_objects +postdep_objects=$lt_postdep_objects +predeps=$lt_predeps +postdeps=$lt_postdeps + +# The library search path used internally by the compiler when linking +# a shared library. +compiler_lib_search_path=$lt_compiler_lib_search_path + +# ### END LIBTOOL CONFIG + +_LT_EOF + + cat <<'_LT_EOF' >> "$cfgfile" + +# ### BEGIN FUNCTIONS SHARED WITH CONFIGURE + +# func_munge_path_list VARIABLE PATH +# ----------------------------------- +# VARIABLE is name of variable containing _space_ separated list of +# directories to be munged by the contents of PATH, which is string +# having a format: +# "DIR[:DIR]:" +# string "DIR[ DIR]" will be prepended to VARIABLE +# ":DIR[:DIR]" +# string "DIR[ DIR]" will be appended to VARIABLE +# "DIRP[:DIRP]::[DIRA:]DIRA" +# string "DIRP[ DIRP]" will be prepended to VARIABLE and string +# "DIRA[ DIRA]" will be appended to VARIABLE +# "DIR[:DIR]" +# VARIABLE will be replaced by "DIR[ DIR]" +func_munge_path_list () +{ + case x$2 in + x) + ;; + *:) + eval $1=\"`$ECHO $2 | $SED 's/:/ /g'` \$$1\" + ;; + x:*) + eval $1=\"\$$1 `$ECHO $2 | $SED 's/:/ /g'`\" + ;; + *::*) + eval $1=\"\$$1\ `$ECHO $2 | $SED -e 's/.*:://' -e 's/:/ /g'`\" + eval $1=\"`$ECHO $2 | $SED -e 's/::.*//' -e 's/:/ /g'`\ \$$1\" + ;; + *) + eval $1=\"`$ECHO $2 | $SED 's/:/ /g'`\" + ;; + esac +} + + +# Calculate cc_basename. Skip known compiler wrappers and cross-prefix. +func_cc_basename () +{ + for cc_temp in $*""; do + case $cc_temp in + compile | *[\\/]compile | ccache | *[\\/]ccache ) ;; + distcc | *[\\/]distcc | purify | *[\\/]purify ) ;; + \-*) ;; + *) break;; + esac + done + func_cc_basename_result=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"` +} + + +# ### END FUNCTIONS SHARED WITH CONFIGURE + +_LT_EOF + + case $host_os in + aix3*) + cat <<\_LT_EOF >> "$cfgfile" +# AIX sometimes has problems with the GCC collect2 program. For some +# reason, if we set the COLLECT_NAMES environment variable, the problems +# vanish in a puff of smoke. +if test set != "${COLLECT_NAMES+set}"; then + COLLECT_NAMES= + export COLLECT_NAMES +fi +_LT_EOF + ;; + esac + + +ltmain=$ac_aux_dir/ltmain.sh + + + # We use sed instead of cat because bash on DJGPP gets confused if + # if finds mixed CR/LF and LF-only lines. Since sed operates in + # text mode, it properly converts lines to CR/LF. This bash problem + # is reportedly fixed, but why not run on old versions too? + sed '$q' "$ltmain" >> "$cfgfile" \ + || (rm -f "$cfgfile"; exit 1) + + mv -f "$cfgfile" "$ofile" || + (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile") + chmod +x "$ofile" + + + cat <<_LT_EOF >> "$ofile" + +# ### BEGIN LIBTOOL TAG CONFIG: CXX + +# The linker used to build libraries. +LD=$lt_LD_CXX + +# How to create reloadable object files. +reload_flag=$lt_reload_flag_CXX +reload_cmds=$lt_reload_cmds_CXX + +# Commands used to build an old-style archive. +old_archive_cmds=$lt_old_archive_cmds_CXX + +# A language specific compiler. +CC=$lt_compiler_CXX + +# Is the compiler the GNU compiler? +with_gcc=$GCC_CXX + +# Compiler flag to turn off builtin functions. +no_builtin_flag=$lt_lt_prog_compiler_no_builtin_flag_CXX + +# Additional compiler flags for building library objects. +pic_flag=$lt_lt_prog_compiler_pic_CXX + +# How to pass a linker flag through the compiler. +wl=$lt_lt_prog_compiler_wl_CXX + +# Compiler flag to prevent dynamic linking. +link_static_flag=$lt_lt_prog_compiler_static_CXX + +# Does compiler simultaneously support -c and -o options? +compiler_c_o=$lt_lt_cv_prog_compiler_c_o_CXX + +# Whether or not to add -lc for building shared libraries. +build_libtool_need_lc=$archive_cmds_need_lc_CXX + +# Whether or not to disallow shared libs when runtime libs are static. +allow_libtool_libs_with_static_runtimes=$enable_shared_with_static_runtimes_CXX + +# Compiler flag to allow reflexive dlopens. +export_dynamic_flag_spec=$lt_export_dynamic_flag_spec_CXX + +# Compiler flag to generate shared objects directly from archives. +whole_archive_flag_spec=$lt_whole_archive_flag_spec_CXX + +# Whether the compiler copes with passing no objects directly. +compiler_needs_object=$lt_compiler_needs_object_CXX + +# Create an old-style archive from a shared archive. +old_archive_from_new_cmds=$lt_old_archive_from_new_cmds_CXX + +# Create a temporary old-style archive to link instead of a shared archive. +old_archive_from_expsyms_cmds=$lt_old_archive_from_expsyms_cmds_CXX + +# Commands used to build a shared archive. +archive_cmds=$lt_archive_cmds_CXX +archive_expsym_cmds=$lt_archive_expsym_cmds_CXX + +# Commands used to build a loadable module if different from building +# a shared archive. +module_cmds=$lt_module_cmds_CXX +module_expsym_cmds=$lt_module_expsym_cmds_CXX + +# Whether we are building with GNU ld or not. +with_gnu_ld=$lt_with_gnu_ld_CXX + +# Flag that allows shared libraries with undefined symbols to be built. +allow_undefined_flag=$lt_allow_undefined_flag_CXX + +# Flag that enforces no undefined symbols. +no_undefined_flag=$lt_no_undefined_flag_CXX + +# Flag to hardcode \$libdir into a binary during linking. +# This must work even if \$libdir does not exist +hardcode_libdir_flag_spec=$lt_hardcode_libdir_flag_spec_CXX + +# Whether we need a single "-rpath" flag with a separated argument. +hardcode_libdir_separator=$lt_hardcode_libdir_separator_CXX + +# Set to "yes" if using DIR/libNAME\$shared_ext during linking hardcodes +# DIR into the resulting binary. +hardcode_direct=$hardcode_direct_CXX + +# Set to "yes" if using DIR/libNAME\$shared_ext during linking hardcodes +# DIR into the resulting binary and the resulting library dependency is +# "absolute",i.e impossible to change by setting \$shlibpath_var if the +# library is relocated. +hardcode_direct_absolute=$hardcode_direct_absolute_CXX + +# Set to "yes" if using the -LDIR flag during linking hardcodes DIR +# into the resulting binary. +hardcode_minus_L=$hardcode_minus_L_CXX + +# Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR +# into the resulting binary. +hardcode_shlibpath_var=$hardcode_shlibpath_var_CXX + +# Set to "yes" if building a shared library automatically hardcodes DIR +# into the library and all subsequent libraries and executables linked +# against it. +hardcode_automatic=$hardcode_automatic_CXX + +# Set to yes if linker adds runtime paths of dependent libraries +# to runtime path list. +inherit_rpath=$inherit_rpath_CXX + +# Whether libtool must link a program against all its dependency libraries. +link_all_deplibs=$link_all_deplibs_CXX + +# Set to "yes" if exported symbols are required. +always_export_symbols=$always_export_symbols_CXX + +# The commands to list exported symbols. +export_symbols_cmds=$lt_export_symbols_cmds_CXX + +# Symbols that should not be listed in the preloaded symbols. +exclude_expsyms=$lt_exclude_expsyms_CXX + +# Symbols that must always be exported. +include_expsyms=$lt_include_expsyms_CXX + +# Commands necessary for linking programs (against libraries) with templates. +prelink_cmds=$lt_prelink_cmds_CXX + +# Commands necessary for finishing linking programs. +postlink_cmds=$lt_postlink_cmds_CXX + +# Specify filename containing input files. +file_list_spec=$lt_file_list_spec_CXX + +# How to hardcode a shared library path into an executable. +hardcode_action=$hardcode_action_CXX + +# The directories searched by this compiler when creating a shared library. +compiler_lib_search_dirs=$lt_compiler_lib_search_dirs_CXX + +# Dependencies to place before and after the objects being linked to +# create a shared library. +predep_objects=$lt_predep_objects_CXX +postdep_objects=$lt_postdep_objects_CXX +predeps=$lt_predeps_CXX +postdeps=$lt_postdeps_CXX + +# The library search path used internally by the compiler when linking +# a shared library. +compiler_lib_search_path=$lt_compiler_lib_search_path_CXX + +# ### END LIBTOOL TAG CONFIG: CXX +_LT_EOF + + ;; + + esac +done # for ac_tag + + +as_fn_exit 0 +_ACEOF +ac_clean_files=$ac_clean_files_save + +test $ac_write_fail = 0 || + as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5 + + +# configure is writing to config.log, and then calls config.status. +# config.status does its own redirection, appending to config.log. +# Unfortunately, on DOS this fails, as config.log is still kept open +# by configure, so config.status won't be able to write to it; its +# output is simply discarded. So we exec the FD to /dev/null, +# effectively closing config.log, so it can be properly (re)opened and +# appended to by config.status. When coming back to configure, we +# need to make the FD available again. +if test "$no_create" != yes; then + ac_cs_success=: + ac_config_status_args= + test "$silent" = yes && + ac_config_status_args="$ac_config_status_args --quiet" + exec 5>/dev/null + $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false + exec 5>>config.log + # Use ||, not &&, to avoid exiting from the if with $? = 1, which + # would make configure fail if this is the last instruction. + $ac_cs_success || as_fn_exit 1 +fi + +# +# CONFIG_SUBDIRS section. +# +if test "$no_recursion" != yes; then + + # Remove --cache-file, --srcdir, and --disable-option-checking arguments + # so they do not pile up. + ac_sub_configure_args= + ac_prev= + eval "set x $ac_configure_args" + shift + for ac_arg + do + if test -n "$ac_prev"; then + ac_prev= + continue + fi + case $ac_arg in + -cache-file | --cache-file | --cache-fil | --cache-fi \ + | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c) + ac_prev=cache_file ;; + -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \ + | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* \ + | --c=*) + ;; + --config-cache | -C) + ;; + -srcdir | --srcdir | --srcdi | --srcd | --src | --sr) + ac_prev=srcdir ;; + -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*) + ;; + -prefix | --prefix | --prefi | --pref | --pre | --pr | --p) + ac_prev=prefix ;; + -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*) + ;; + --disable-option-checking) + ;; + *) + case $ac_arg in + *\'*) ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;; + esac + as_fn_append ac_sub_configure_args " '$ac_arg'" ;; + esac + done + + # Always prepend --prefix to ensure using the same prefix + # in subdir configurations. + ac_arg="--prefix=$prefix" + case $ac_arg in + *\'*) ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;; + esac + ac_sub_configure_args="'$ac_arg' $ac_sub_configure_args" + + # Pass --silent + if test "$silent" = yes; then + ac_sub_configure_args="--silent $ac_sub_configure_args" + fi + + # Always prepend --disable-option-checking to silence warnings, since + # different subdirs can have different --enable and --with options. + ac_sub_configure_args="--disable-option-checking $ac_sub_configure_args" + + ac_popdir=`pwd` + for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue + + # Do not complain, so a configure script can configure whichever + # parts of a large source tree are present. + test -d "$srcdir/$ac_dir" || continue + + ac_msg="=== configuring in $ac_dir (`pwd`/$ac_dir)" + $as_echo "$as_me:${as_lineno-$LINENO}: $ac_msg" >&5 + $as_echo "$ac_msg" >&6 + as_dir="$ac_dir"; as_fn_mkdir_p + ac_builddir=. + +case "$ac_dir" in +.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;; +*) + ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'` + # A ".." for each directory in $ac_dir_suffix. + ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'` + case $ac_top_builddir_sub in + "") ac_top_builddir_sub=. ac_top_build_prefix= ;; + *) ac_top_build_prefix=$ac_top_builddir_sub/ ;; + esac ;; +esac +ac_abs_top_builddir=$ac_pwd +ac_abs_builddir=$ac_pwd$ac_dir_suffix +# for backward compatibility: +ac_top_builddir=$ac_top_build_prefix + +case $srcdir in + .) # We are building in place. + ac_srcdir=. + ac_top_srcdir=$ac_top_builddir_sub + ac_abs_top_srcdir=$ac_pwd ;; + [\\/]* | ?:[\\/]* ) # Absolute name. + ac_srcdir=$srcdir$ac_dir_suffix; + ac_top_srcdir=$srcdir + ac_abs_top_srcdir=$srcdir ;; + *) # Relative name. + ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix + ac_top_srcdir=$ac_top_build_prefix$srcdir + ac_abs_top_srcdir=$ac_pwd/$srcdir ;; +esac +ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix + + + cd "$ac_dir" + + # Check for guested configure; otherwise get Cygnus style configure. + if test -f "$ac_srcdir/configure.gnu"; then + ac_sub_configure=$ac_srcdir/configure.gnu + elif test -f "$ac_srcdir/configure"; then + ac_sub_configure=$ac_srcdir/configure + elif test -f "$ac_srcdir/configure.in"; then + # This should be Cygnus configure. + ac_sub_configure=$ac_aux_dir/configure + else + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: no configuration information is in $ac_dir" >&5 +$as_echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;} + ac_sub_configure= + fi + + # The recursion is here. + if test -n "$ac_sub_configure"; then + # Make the cache file name correct relative to the subdirectory. + case $cache_file in + [\\/]* | ?:[\\/]* ) ac_sub_cache_file=$cache_file ;; + *) # Relative name. + ac_sub_cache_file=$ac_top_build_prefix$cache_file ;; + esac + + { $as_echo "$as_me:${as_lineno-$LINENO}: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5 +$as_echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;} + # The eval makes quoting arguments work. + eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \ + --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" || + as_fn_error $? "$ac_sub_configure failed for $ac_dir" "$LINENO" 5 + fi + + cd "$ac_popdir" + done +fi +if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 +$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} +fi + diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..da9cded --- /dev/null +++ b/configure.ac @@ -0,0 +1,1044 @@ +# Copyright (c) 1999-2001 by Red Hat, Inc. All rights reserved. +# +# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +# OR IMPLIED. ANY USE IS AT YOUR OWN RISK. +# +# Permission is hereby granted to use or copy this program +# for any purpose, provided the above notices are retained on all copies. +# Permission to modify the code and to distribute modified code is granted, +# provided the above notices are retained, and a notice that the code was +# modified is included with the above copyright notice. + +dnl Process this file with autoconf to produce configure. + +# Initialization +AC_INIT(gc,7.6.4,https://github.com/ivmai/bdwgc/issues) + ## version must conform to [0-9]+[.][0-9]+[.][0-9]+ +AC_CONFIG_SRCDIR(gcj_mlc.c) +AC_CONFIG_MACRO_DIR([m4]) +AC_CANONICAL_TARGET +AC_PREREQ(2.61) +GC_SET_VERSION +AM_INIT_AUTOMAKE([foreign nostdinc subdir-objects]) +AC_CONFIG_HEADERS([include/config.h]) +AM_MAINTAINER_MODE + +AC_SUBST(PACKAGE) +AC_SUBST(GC_VERSION) + +AM_PROG_CC_C_O +AC_PROG_CXX +AM_PROG_AS +AC_PROG_INSTALL +LT_INIT +# Note: If Autoconf reports that LIBTOOL (or AC_ENABLE_SHARED, or +# AC_PROG_LIBTOOL) is undefined, Libtool installation should be checked. + +# Special CFLAGS to use when building +gc_cflags="" + +# gc_use_mmap Set to "yes" on platforms where mmap should be used instead +# of sbrk. This will define USE_MMAP. +gc_use_mmap="" + +# We should set -fexceptions if we are using gcc and might be used +# inside something like gcj. This is the zeroth approximation: +if test :"$GCC": = :yes: ; then + gc_cflags="${gc_cflags} -fexceptions" +else + case "$host" in + hppa*-*-hpux* ) + if test :$GCC: != :"yes": ; then + gc_cflags="${gc_flags} +ESdbgasm" + fi + # :TODO: actually we should check using Autoconf if + # the compiler supports this option. + ;; + esac +fi + +case "${host}" in + *-linux*) + # FIXME: This seems to be no longer needed as configured in gcconfig.h + #gc_use_mmap=yes + ;; +esac + +# target_optspace --enable-target-optspace ("yes", "no", "") +case "${target_optspace}:${host}" in + yes:*) + gc_cflags="${gc_cflags} -Os" + ;; + :m32r-* | :d10v-* | :d30v-*) + gc_cflags="${gc_cflags} -Os" + ;; + no:* | :*) + # Nothing. + ;; +esac + +# Set any host dependent compiler flags. +case "${host}" in + mips-tx39-*|mipstx39-unknown-*) + gc_cflags="${gc_cflags} -G 0" + ;; + *) + ;; +esac + + +GC_CFLAGS=${gc_cflags} +AC_SUBST(GC_CFLAGS) + +# Extra user-defined flags to pass both to C and C++ compilers. +AC_SUBST([CFLAGS_EXTRA]) + +AC_ARG_ENABLE(threads, + [AC_HELP_STRING([--enable-threads=TYPE], [choose threading package])], + THREADS=$enableval, + [ AC_MSG_CHECKING([for thread model used by GCC]) + THREADS=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` + if test -z "$THREADS"; then + THREADS=no + fi + if test "$THREADS" = "posix"; then + case "$host" in + *-*-mingw*) + # Adjust thread model if cross-compiling for MinGW. + THREADS=win32 + ;; + esac + fi + AC_MSG_RESULT([$THREADS]) ]) + +AC_ARG_ENABLE(parallel-mark, + [AC_HELP_STRING([--enable-parallel-mark], + [parallelize marking and free list construction])], + [case "$THREADS" in + no | none | single) + if test "${enable_parallel_mark}" != no; then + AC_MSG_ERROR([Parallel mark requires --enable-threads=x spec]) + fi + ;; + esac ] +) + +AC_ARG_ENABLE(cplusplus, + [AC_HELP_STRING([--enable-cplusplus], [install C++ support])]) + +dnl Features which may be selected in the following thread-detection switch. +AH_TEMPLATE([PARALLEL_MARK], [Define to enable parallel marking.]) +AH_TEMPLATE([THREAD_LOCAL_ALLOC], + [Define to enable thread-local allocation optimization.]) +AH_TEMPLATE([USE_COMPILER_TLS], + [Define to use of compiler-support for thread-local variables.]) + +dnl Thread selection macros. +AH_TEMPLATE([GC_THREADS], [Define to support platform-specific + threads.]) +AH_TEMPLATE([GC_AIX_THREADS], [Define to support IBM AIX threads.]) +AH_TEMPLATE([GC_DARWIN_THREADS], [Define to support Darwin pthreads.]) +AH_TEMPLATE([GC_FREEBSD_THREADS], [Define to support FreeBSD pthreads.]) +AH_TEMPLATE([GC_GNU_THREADS], [Define to support GNU pthreads.]) +AH_TEMPLATE([GC_HPUX_THREADS], [Define to support HP/UX 11 pthreads.]) +AH_TEMPLATE([GC_IRIX_THREADS], [Define to support Irix pthreads.]) +AH_TEMPLATE([GC_LINUX_THREADS], [Define to support pthreads on Linux.]) +AH_TEMPLATE([GC_NETBSD_THREADS], [Define to support NetBSD pthreads.]) +AH_TEMPLATE([GC_OPENBSD_THREADS], [Define to support OpenBSD pthreads.]) +AH_TEMPLATE([GC_OSF1_THREADS], [Define to support Tru64 pthreads.]) +AH_TEMPLATE([GC_SOLARIS_THREADS], [Define to support Solaris pthreads.]) +AH_TEMPLATE([GC_WIN32_THREADS], [Define to support Win32 threads.]) +AH_TEMPLATE([GC_WIN32_PTHREADS], + [Define to support pthreads-win32 or winpthreads.]) +AH_TEMPLATE([GC_RTEMS_PTHREADS], [Define to support rtems-pthreads.]) + +dnl System header feature requests. +AH_TEMPLATE([_POSIX_C_SOURCE], [The POSIX feature macro.]) +AH_TEMPLATE([_PTHREADS], [Indicates the use of pthreads (NetBSD).]) + +dnl Win32-specific API usage controls. +AH_TEMPLATE([GC_UNDERSCORE_STDCALL], + [Explicitly prefix exported/imported WINAPI symbols with '_'.]) +AH_TEMPLATE([UNICODE], + [Use Unicode (W) variant of Win32 API instead of ASCII (A) one.]) + +dnl GC API symbols export control. +AH_TEMPLATE([GC_DLL], + [Define to build dynamic libraries with only API symbols exposed.]) + +dnl Check for a flavor of supported inline keyword. +old_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS $CFLAGS_EXTRA" +AC_C_INLINE +CFLAGS="$old_CFLAGS" + +THREADDLLIBS= +need_atomic_ops_asm=false +## Libraries needed to support dynamic loading and/or threads. +case "$THREADS" in + no | none | single) + THREADS=none + ;; + posix | pthreads) + THREADS=posix + AC_CHECK_LIB(pthread, pthread_self, THREADDLLIBS="-lpthread",,) + case "$host" in + x86-*-linux* | ia64-*-linux* | i586-*-linux* | i686-*-linux* \ + | x86_64-*-linux* | alpha-*-linux* | powerpc*-*-linux* | sparc*-*-linux*) + AC_DEFINE(GC_LINUX_THREADS) + AC_DEFINE(_REENTRANT) + if test "${enable_parallel_mark}" != no; then + AC_DEFINE(PARALLEL_MARK) + fi + AC_DEFINE(THREAD_LOCAL_ALLOC) + AC_MSG_WARN("Explicit GC_INIT() calls may be required.") + ;; + *-*-*linux* | *-*-nacl*) + AC_DEFINE(GC_LINUX_THREADS) + AC_DEFINE(_REENTRANT) + ;; + *-*-aix*) + AC_DEFINE(GC_AIX_THREADS) + AC_DEFINE(_REENTRANT) + ;; + *-*-hpux11*) + AC_MSG_WARN("Only HP/UX 11 POSIX threads are supported.") + AC_DEFINE(GC_HPUX_THREADS) + AC_DEFINE(_POSIX_C_SOURCE,199506L) + if test "${enable_parallel_mark}" = yes; then + AC_DEFINE(PARALLEL_MARK) + fi + AC_DEFINE(THREAD_LOCAL_ALLOC) + AC_MSG_WARN("Explicit GC_INIT() calls may be required.") + THREADDLLIBS="-lpthread -lrt" + # HPUX needs REENTRANT for the _r calls. + AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads.]) + ;; + *-*-hpux10*) + AC_MSG_WARN("Only HP-UX 11 POSIX threads are supported.") + ;; + *-*-openbsd*) + AC_DEFINE(GC_OPENBSD_THREADS) + THREADDLLIBS=-pthread + AM_CFLAGS="$AM_CFLAGS -pthread" + ;; + *-*-freebsd*) + AC_MSG_WARN("FreeBSD does not yet fully support threads with Boehm GC.") + AC_DEFINE(GC_FREEBSD_THREADS) + AM_CFLAGS="$AM_CFLAGS -pthread" + if test "${enable_parallel_mark}" = yes; then + AC_DEFINE(PARALLEL_MARK) + fi + AC_DEFINE(THREAD_LOCAL_ALLOC) + ;; + *-*-kfreebsd*-gnu) + AC_DEFINE(GC_FREEBSD_THREADS) + AM_CFLAGS="$AM_CFLAGS -pthread" + THREADDLLIBS=-pthread + AC_DEFINE(_REENTRANT) + if test "${enable_parallel_mark}" = yes; then + AC_DEFINE(PARALLEL_MARK) + fi + AC_DEFINE(THREAD_LOCAL_ALLOC) + AC_DEFINE(USE_COMPILER_TLS) + ;; + *-*-gnu*) + AC_DEFINE(GC_GNU_THREADS) + AC_DEFINE(_REENTRANT) + AC_DEFINE(THREAD_LOCAL_ALLOC) + ;; + *-*-netbsd*) + AC_MSG_WARN("Only on NetBSD 2.0 or later.") + AC_DEFINE(GC_NETBSD_THREADS) + AC_DEFINE(_REENTRANT) + AC_DEFINE(_PTHREADS) + THREADDLLIBS="-lpthread -lrt" + ;; + *-*-solaris*) + AC_DEFINE(GC_SOLARIS_THREADS) + if test "${enable_parallel_mark}" != no; then + AC_DEFINE(PARALLEL_MARK) + fi + AC_DEFINE(THREAD_LOCAL_ALLOC) + # Need to use alternate thread library, otherwise gctest hangs + # on Solaris 8. + multi_os_directory=`$CC -print-multi-os-directory` + THREADDLLIBS="-L/usr/lib/lwp/$multi_os_directory \ + -R/usr/lib/lwp/$multi_os_directory -lpthread -lrt" + ;; + *-*-irix*) + AC_DEFINE(GC_IRIX_THREADS) + ;; + *-*-cygwin*) + AC_DEFINE(GC_WIN32_THREADS) + if test "${enable_parallel_mark}" != no; then + AC_DEFINE(PARALLEL_MARK) + fi + AC_DEFINE(THREAD_LOCAL_ALLOC) + # Cygwin doesn't have a real libpthread, so Libtool can't link + # against it. + THREADDLLIBS="" + win32_threads=true + ;; + *-*-mingw*) + AC_DEFINE(GC_WIN32_PTHREADS) + # Using pthreads-win32 (or other non-Cygwin pthreads) library. + if test "${enable_parallel_mark}" != no; then + AC_DEFINE(PARALLEL_MARK) + fi + AC_DEFINE(THREAD_LOCAL_ALLOC) + THREADDLLIBS="-lpthread" + win32_threads=true + ;; + *-*-darwin*) + AC_DEFINE(GC_DARWIN_THREADS) + AC_MSG_WARN("Explicit GC_INIT() calls may be required.") + # Parallel-mark is not well-tested on Darwin + if test "${enable_parallel_mark}" != no; then + AC_DEFINE(PARALLEL_MARK) + fi + AC_DEFINE(THREAD_LOCAL_ALLOC) + darwin_threads=true + ;; + *-*-osf*) + AC_DEFINE(GC_OSF1_THREADS) + if test "${enable_parallel_mark}" = yes; then + AC_DEFINE(PARALLEL_MARK) + AC_DEFINE(THREAD_LOCAL_ALLOC) + AC_MSG_WARN("Explicit GC_INIT() calls may be required."); + # May want to enable it in other cases, too. + # Measurements have not yet been done. + fi + AM_CFLAGS="$AM_CFLAGS -pthread" + THREADDLLIBS="-lpthread -lrt" + ;; + *) + AC_MSG_ERROR("Pthreads not supported by the GC on this platform.") + ;; + esac + case "$host" in + sparc*-*-solaris*) + if test "$GCC" != yes; then + need_atomic_ops_asm=true + fi + ;; + esac + ;; + win32) + AC_DEFINE(GC_WIN32_THREADS) + if test "${enable_parallel_mark}" != no; then + AC_DEFINE(PARALLEL_MARK) + AC_DEFINE(THREAD_LOCAL_ALLOC) + else + if test "${enable_shared}" != yes || test "${enable_static}" != no; then + # Imply THREAD_LOCAL_ALLOC unless GC_DLL. + AC_DEFINE(THREAD_LOCAL_ALLOC) + fi + fi + if test "${enable_win32_dllmain}" = yes; then + AC_DEFINE(GC_INSIDE_DLL, 1, + [Enable Win32 DllMain-based approach of threads registering.]) + fi + win32_threads=true + AC_DEFINE([EMPTY_GETENV_RESULTS], [1], + [Wine getenv may not return NULL for missing entry.]) + ;; + dgux386) + THREADS=dgux386 + AC_MSG_RESULT($THREADDLLIBS) + # Use pthread GCC switch + THREADDLLIBS=-pthread + if test "${enable_parallel_mark}" = yes; then + AC_DEFINE(PARALLEL_MARK) + fi + AC_DEFINE(THREAD_LOCAL_ALLOC) + AC_MSG_WARN("Explicit GC_INIT() calls may be required.") + AC_DEFINE([GC_DGUX386_THREADS], 1, + [Define to enable support for DB/UX threads on i386.]) + AC_DEFINE([DGUX_THREADS], 1, + [Define to enable support for DB/UX threads.]) + # Enable _POSIX4A_DRAFT10_SOURCE with flag -pthread + AM_CFLAGS="-pthread $AM_CFLAGS" + ;; + aix) + THREADS=posix + THREADDLLIBS=-lpthread + AC_DEFINE(GC_AIX_THREADS) + AC_DEFINE(_REENTRANT) + ;; + rtems) + THREADS=posix + AC_DEFINE(GC_RTEMS_PTHREADS) + AC_DEFINE(THREAD_LOCAL_ALLOC) + ;; + decosf1 | irix | mach | os2 | solaris | dce | vxworks) + AC_MSG_ERROR(thread package $THREADS not yet supported) + ;; + *) + AC_MSG_ERROR($THREADS is an unknown thread package) + ;; +esac +AC_SUBST(THREADDLLIBS) +AM_CONDITIONAL(THREADS, test x$THREADS != xnone) +AM_CONDITIONAL(PTHREADS, test x$THREADS = xposix) +AM_CONDITIONAL(DARWIN_THREADS, test x$darwin_threads = xtrue) +AM_CONDITIONAL(WIN32_THREADS, test x$win32_threads = xtrue) + +compiler_suncc=no +pthread_start_standalone=no +case "$host" in + *-*-*linux*) + # Turn on the workaround described in pthread_start.c. + AS_IF([test "$THREADS" = posix], [pthread_start_standalone=yes]) + ;; + powerpc-*-darwin*) + powerpc_darwin=true + ;; + *-*-solaris*) + if test "$GCC" != yes; then + # Solaris SunCC + compiler_suncc=yes + CFLAGS="-O $CFLAGS" + fi + ;; + *-*-wince*) + if test "$enable_gc_debug" != "no"; then + AC_DEFINE([GC_READ_ENV_FILE], 1, + [Read environment variables from the GC 'env' file.]) + fi + ;; +esac +AM_CONDITIONAL(PTHREAD_START_STANDALONE, + test x$pthread_start_standalone = xyes) + +if test "$GCC" = yes; then + # Output all warnings. + AC_MSG_CHECKING([whether compiler supports -Wextra]) + old_CFLAGS="$CFLAGS" + CFLAGS="-Wextra $CFLAGS" + AC_TRY_COMPILE([],[], [ac_cv_cc_wextra=yes], [ac_cv_cc_wextra=no]) + CFLAGS="$old_CFLAGS" + AC_MSG_RESULT($ac_cv_cc_wextra) + AS_IF([test "$ac_cv_cc_wextra" = yes], [WEXTRA="-Wextra"], [WEXTRA="-W"]) + AC_MSG_CHECKING([whether compiler supports -Wpedantic]) + CFLAGS="-Wpedantic -Wno-long-long $CFLAGS" + AC_TRY_COMPILE([],[ + extern int quiet; + ], [ac_cv_cc_pedantic=yes], [ac_cv_cc_pedantic=no]) + CFLAGS="$old_CFLAGS" + AC_MSG_RESULT($ac_cv_cc_pedantic) + WPEDANTIC= + AS_IF([test "$ac_cv_cc_pedantic" = yes], + [WPEDANTIC="-Wpedantic -Wno-long-long"]) + CFLAGS="-Wall $WEXTRA $WPEDANTIC $CFLAGS" +fi + +AC_MSG_CHECKING(for xlc) +AC_TRY_COMPILE([],[ + #ifndef __xlC__ + # error + #endif +], [compiler_xlc=yes], [compiler_xlc=no]) +AC_MSG_RESULT($compiler_xlc) +if test $compiler_xlc = yes -a "$powerpc_darwin" = true; then + # the darwin stack-frame-walking code is completely broken on xlc + AC_DEFINE([DARWIN_DONT_PARSE_STACK], 1, [See doc/README.macros.]) +fi + +# XLC neither requires nor tolerates the unnecessary assembler goop. +# Similar for the Sun C compiler. +AM_CONDITIONAL([ASM_WITH_CPP_UNSUPPORTED], + [test $compiler_xlc = yes -o $compiler_suncc = yes]) + +if test "$GCC" = yes; then + # Disable aliasing optimization unless forced to. + AC_MSG_CHECKING([whether compiler supports -fno-strict-aliasing]) + ac_cv_fno_strict_aliasing=no + for cflag in $CFLAGS; do + case "$cflag" in + -fstrict-aliasing) + # Opposite option already present + ac_cv_fno_strict_aliasing=skipped + break + ;; + esac + done + if test "$ac_cv_fno_strict_aliasing" != skipped; then + old_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -fno-strict-aliasing" + AC_TRY_COMPILE([],[], [ac_cv_fno_strict_aliasing=yes], []) + CFLAGS="$old_CFLAGS" + AS_IF([test "$ac_cv_fno_strict_aliasing" = yes], + [CFLAGS="$CFLAGS -fno-strict-aliasing"], []) + fi + AC_MSG_RESULT($ac_cv_fno_strict_aliasing) +fi + +# Check for getcontext (uClibc can be configured without it, for example) +AC_CHECK_FUNCS([getcontext]) +if test "$ac_cv_func_getcontext" = "no"; then + AC_DEFINE([NO_GETCONTEXT], [1], [Missing getcontext()]) +fi + +# Check whether dl_iterate_phdr exists (as a strong symbol). +AC_CHECK_FUNCS([dl_iterate_phdr]) +if test "$ac_cv_func_dl_iterate_phdr" = "yes"; then + AC_DEFINE([HAVE_DL_ITERATE_PHDR], [1], + [Define if 'dl_iterate_phdr' function is available.]) +fi + +case "$host" in +# While IRIX 6 has libdl for the O32 and N32 ABIs, it's missing for N64 +# and unnecessary everywhere. + mips-sgi-irix6*) ;; +# We never want libdl on darwin. It is a fake libdl that just ends up making +# dyld calls anyway. The same applies to Cygwin. + *-*-darwin*) ;; + *-*-cygwin*) ;; + *) + AC_CHECK_LIB(dl, dlopen, THREADDLLIBS="$THREADDLLIBS -ldl") + ;; +esac + +case "$host" in + *-*-hpux*) + avoid_cpp_lib=yes;; + *) + avoid_cpp_lib=no; + ;; +esac +AM_CONDITIONAL(AVOID_CPP_LIB,test $avoid_cpp_lib = yes) + +# Check for various headers. +AC_CHECK_HEADERS([execinfo.h]) +if test "$ac_cv_header_execinfo_h" != "yes"; then + AC_DEFINE([GC_MISSING_EXECINFO_H], [1], [Missing execinfo.h header]) +fi + +# extra LD Flags which are required for targets +case "${host}" in + *-*-darwin*) + extra_ldflags_libgc=-Wl,-single_module + ;; +esac +AC_SUBST(extra_ldflags_libgc) + +AC_SUBST(EXTRA_TEST_LIBS) + +target_all=libgc.la +AC_SUBST(target_all) + +dnl If the target is an eCos system, use the appropriate eCos +dnl I/O routines. +dnl FIXME: this should not be a local option but a global target +dnl system; at present there is no eCos target. +TARGET_ECOS="no" +AC_ARG_WITH(ecos, +[ --with-ecos enable runtime eCos target support], +TARGET_ECOS="$with_ecos" +) + +addobjs= +addlibs= +CXXLIBS= + +case "$TARGET_ECOS" in + no) + ;; + *) + AC_DEFINE([ECOS], 1, [Define to enable eCos target support.]) + AM_CPPFLAGS="-I${TARGET_ECOS}/include $AM_CPPFLAGS" + addobjs="$addobjs ecos.lo" + ;; +esac + +AM_CONDITIONAL(CPLUSPLUS, test "${enable_cplusplus}" = yes) + +if test "$GCC" = yes; then + if test "${enable_cplusplus}" = yes; then + case "$host" in + *-*-cygwin* | *-*-mingw*) + AC_MSG_CHECKING([whether libsupc++ required]) + SUPC="`$CXX -print-file-name=libsupc++.a 2>/dev/null`" + if test -n "$SUPC" -a "$SUPC" != "libsupc++.a"; then + AC_MSG_RESULT(yes) + CXXLIBS="-lsupc++" + else + AC_MSG_RESULT(no) + fi + ;; + esac + fi +fi + +AC_SUBST(CXX) +AC_SUBST(AM_CFLAGS) +AC_SUBST(AM_CPPFLAGS) +AC_SUBST(CXXLIBS) + +# Configuration of shared libraries +# +AC_MSG_CHECKING(whether to build shared libraries) +AC_ENABLE_SHARED + +case "$host" in + alpha-*-openbsd*) + enable_shared=no + ;; + *) + ;; +esac + +AC_MSG_RESULT($enable_shared) + +# Compile with GC_DLL defined unless building static libraries. +if test "${enable_shared}" = yes; then + if test "${enable_static}" = no; then + AC_DEFINE(GC_DLL) + if test "$GCC" = yes; then + # Pass -fvisibility=hidden option if supported + AC_MSG_CHECKING([whether compiler supports -fvisibility]) + old_CFLAGS="$CFLAGS" + CFLAGS="-Werror -fvisibility=hidden $CFLAGS" + AC_TRY_COMPILE([],[], [ac_cv_fvisibility_hidden=yes], + [ac_cv_fvisibility_hidden=no]) + CFLAGS="$old_CFLAGS" + AS_IF([test "$ac_cv_fvisibility_hidden" = yes], + [CFLAGS="-DGC_VISIBILITY_HIDDEN_SET -fvisibility=hidden $CFLAGS"], + [CFLAGS="-DGC_NO_VISIBILITY $CFLAGS"]) + AC_MSG_RESULT($ac_cv_fvisibility_hidden) + fi + fi +fi + +# Configuration of machine-dependent code +# +AC_MSG_CHECKING(which machine-dependent code should be used) +machdep= +case "$host" in + alpha-*-openbsd*) + if test x"${ac_cv_lib_dl_dlopen}" != xyes ; then + AC_MSG_WARN( + "OpenBSD/Alpha without dlopen(). Shared library support is disabled.") + fi + ;; + i?86-*-solaris2.[[89]]) + # PROC_VDB appears to work in 2.8 and 2.9 but not in 2.10+ (for now). + AC_DEFINE([SOLARIS25_PROC_VDB_BUG_FIXED], 1, + [See the comment in gcconfig.h.]) + ;; + mips-*-*) + dnl AC_DEFINE(NO_EXECUTE_PERMISSION) + dnl This is now redundant, but it is also important for incremental GC + dnl performance under Irix. + ;; + sparc-*-netbsd*) + machdep="sparc_netbsd_mach_dep.lo" + ;; + sparc*-*-linux* | sparc*-*-openbsd* | sparc64-*-freebsd* | sparc64-*-netbsd*) + machdep="sparc_mach_dep.lo" + ;; + sparc-sun-solaris2.3) + machdep="sparc_mach_dep.lo" + AC_DEFINE(SUNOS53_SHARED_LIB, 1, + [Define to work around a Solaris 5.3 bug (see dyn_load.c).]) + ;; + sparc*-sun-solaris2*) + machdep="sparc_mach_dep.lo" + ;; + ia64-*-*) + machdep="ia64_save_regs_in_stack.lo" + ;; + *-*-nacl*) + AC_DEFINE(NO_EXECUTE_PERMISSION) + ;; +esac +AC_MSG_RESULT($machdep) +addobjs="$addobjs $machdep" +AC_SUBST(addobjs) +AC_SUBST(addlibs) + +AC_PROG_LIBTOOL + +dnl We use these options to decide which functions to include. +AC_ARG_WITH(target-subdir, +[ --with-target-subdir=SUBDIR + configuring with a cross compiler]) +AC_ARG_WITH(cross-host, +[ --with-cross-host=HOST configuring with a cross compiler]) + +# automake wants to see AC_EXEEXT. But we don't need it. And having +# it is actually a problem, because the compiler we're passed can't +# necessarily do a full link. So we fool automake here. +if false; then + # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands + # to nothing, so nothing would remain between `then' and `fi' if it + # were not for the `:' below. + : + AC_EXEEXT +fi + +dnl As of 4.13a2, the collector will not properly work on Solaris when +dnl built with gcc and -O. So we remove -O in the appropriate case. +dnl Not needed anymore on Solaris. +AC_MSG_CHECKING(whether Solaris gcc optimization fix is necessary) +case "$host" in + *aix*) + if test "$GCC" = yes; then + AC_MSG_RESULT(yes) + new_CFLAGS= + for i in $CFLAGS; do + case "$i" in + -O*) + ;; + *) + new_CFLAGS="$new_CFLAGS $i" + ;; + esac + done + CFLAGS="$new_CFLAGS" + else + AC_MSG_RESULT(no) + fi + ;; + *) AC_MSG_RESULT(no) ;; +esac + +dnl Include defines that have become de facto standard. +dnl ALL_INTERIOR_POINTERS and NO_EXECUTE_PERMISSION can be overridden +dnl in the startup code. +AC_DEFINE([NO_EXECUTE_PERMISSION], [1], + [Define to make the collector not allocate executable memory + by default.]) +AC_DEFINE([ALL_INTERIOR_POINTERS], [1], + [Define to recognise all pointers to the interior of objects.]) + + +dnl Interface Selection +dnl ------------------- +dnl +dnl By default, make the library as general as possible. +dnl enable_gcj_support=no +AC_ARG_ENABLE(gcj-support, + [AC_HELP_STRING([--disable-gcj-support], + [Disable support for gcj.])]) +if test x"$enable_gcj_support" != xno; then + AC_DEFINE(GC_GCJ_SUPPORT, 1, [Define to include support for gcj.]) + AC_DEFINE([GC_ENABLE_SUSPEND_THREAD], 1, + [Define to turn on GC_suspend_thread support.]) +fi + +dnl Interaction with other programs that might use signals. +AC_ARG_ENABLE(sigrt-signals, + [AC_HELP_STRING([--enable-sigrt-signals], + [Force GC to use SIGRTMIN-based signals for thread suspend/resume])]) +if test x"${enable_sigrt_signals}" = xyes; then + AC_DEFINE([GC_USESIGRT_SIGNALS], 1, + [Force the GC to use signals based on SIGRTMIN+k.]) +fi + + +dnl Debugging +dnl --------- + +AH_TEMPLATE([GC_HAVE_BUILTIN_BACKTRACE], + [Define if backtrace information is supported.]) +AH_TEMPLATE([MAKE_BACK_GRAPH], [See doc/README.macros.]) +AH_TEMPLATE([SAVE_CALL_COUNT], + [The number of caller frames saved when allocating with the + debugging API.]) +UNWINDLIBS= +AC_ARG_ENABLE(gc-debug, +[AC_HELP_STRING([--enable-gc-debug], + [include full support for pointer backtracing etc.])], +[ if test "$enable_gc_debug" = "yes"; then + AC_MSG_WARN("Should define GC_DEBUG and use debug alloc in clients.") + AC_DEFINE([KEEP_BACK_PTRS], 1, + [Define to save back-pointers in debugging headers.]) + keep_back_ptrs=true + AC_DEFINE([DBG_HDRS_ALL], 1, + [Define to force debug headers on all objects.]) + AH_TEMPLATE([SHORT_DBG_HDRS], + [Shorten the headers to minimize object size at the expense + of checking for writes past the end (see doc/README.macros).]) + + case $host in + ia64-*-linux* ) + AC_DEFINE(MAKE_BACK_GRAPH) + AC_DEFINE(SAVE_CALL_COUNT, 8) + AC_CHECK_LIB(unwind, backtrace, [ + AC_DEFINE(GC_HAVE_BUILTIN_BACKTRACE) + UNWINDLIBS=-lunwind + AC_MSG_WARN("Client code may need to link against libunwind.") + ]) + ;; + x86-*-linux* | i586-*-linux* | i686-*-linux* | x86_64-*-linux* ) + AC_DEFINE(MAKE_BACK_GRAPH) + AC_MSG_WARN("Client must not use -fomit-frame-pointer.") + AC_DEFINE(SAVE_CALL_COUNT, 8) + ;; + i[3456]86-*-dgux*) + AC_DEFINE(MAKE_BACK_GRAPH) + ;; + esac ] + fi) +AM_CONDITIONAL([MAKE_BACK_GRAPH], [test x"$enable_gc_debug" = xyes]) +AM_CONDITIONAL([KEEP_BACK_PTRS], [test x"$keep_back_ptrs" = xtrue]) + +# Check for dladdr (used for debugging). +AC_MSG_CHECKING(for dladdr) +have_dladdr=no +old_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS $CFLAGS_EXTRA" +AC_TRY_COMPILE([ +#define _GNU_SOURCE 1 +#include ], [{ + Dl_info info; + (void)dladdr("", &info); +}], [ have_dladdr=yes ]) +CFLAGS="$old_CFLAGS" +AC_MSG_RESULT($have_dladdr) +if test x"$have_dladdr" = xyes; then + AC_DEFINE([HAVE_DLADDR], 1, [Define to use 'dladdr' function.]) +fi + +# Check for AViiON Machines running DGUX +ac_is_dgux=no +AC_CHECK_HEADER(sys/dg_sys_info.h, +[ac_is_dgux=yes;]) + + ## :GOTCHA: we do not check anything but sys/dg_sys_info.h +if test $ac_is_dgux = yes; then + dgux_spec_opts="-DDGUX -D_DGUX_SOURCE -Di386 -mno-legend -O2" + CFLAGS="$dgux_spec_opts $CFLAGS" + CXXFLAGS="$dgux_spec_opts $CXXFLAGS" + if test "$enable_gc_debug" = "yes"; then + CFLAGS="-g -mstandard $CFLAGS" + CXXFLAGS="-g -mstandard $CXXFLAGS" + fi + AC_SUBST(CFLAGS) + AC_SUBST(CXXFLAGS) +fi + +AC_ARG_ENABLE(java-finalization, + [AC_HELP_STRING([--disable-java-finalization], + [Disable support for java finalization.])]) +if test x"$enable_java_finalization" != xno; then + AC_DEFINE([JAVA_FINALIZATION], 1, [See doc/README.macros.]) +fi + +AC_ARG_ENABLE(atomic-uncollectable, + [AC_HELP_STRING([--disable-atomic-uncollectible], + [Disable support for atomic uncollectible allocation.])]) +if test x"$enable_atomic_uncollectible" != x"no"; then + AC_DEFINE([GC_ATOMIC_UNCOLLECTABLE], 1, + [Define to enable atomic uncollectible allocation.]) +fi + +AC_ARG_ENABLE(redirect-malloc, + [AC_HELP_STRING([--enable-redirect-malloc], + [Redirect malloc and friends to GC routines])]) + +if test "${enable_redirect_malloc}" = yes; then + if test "${enable_gc_debug}" = yes; then + AC_DEFINE([REDIRECT_MALLOC], GC_debug_malloc_replacement, + [If defined, redirect malloc to this function.]) + AC_DEFINE([REDIRECT_REALLOC], GC_debug_realloc_replacement, + [If defined, redirect GC_realloc to this function.]) + AC_DEFINE([REDIRECT_FREE], GC_debug_free, + [If defined, redirect free to this function.]) + else + AC_DEFINE(REDIRECT_MALLOC, GC_malloc) + fi + AC_DEFINE([GC_USE_DLOPEN_WRAP], 1, [See doc/README.macros.]) +fi + +AC_ARG_ENABLE(disclaim, + [AC_HELP_STRING([--disable-disclaim], + [Disable alternative (more efficient) finalization interface.])]) +if test x"$enable_disclaim" != xno; then + AC_DEFINE(ENABLE_DISCLAIM, 1, + [Define to enable alternative finalization interface.]) +fi +AM_CONDITIONAL(ENABLE_DISCLAIM, + [test x"$enable_disclaim" != xno]) + +AC_ARG_ENABLE(large-config, + [AC_HELP_STRING([--enable-large-config], + [Optimize for large (> 100 MB) heap or root set])]) + +if test "${enable_large_config}" = yes; then + AC_DEFINE(LARGE_CONFIG, 1, [Define to optimize for large heaps or root sets.]) +fi + +AC_ARG_ENABLE(handle-fork, + [AC_HELP_STRING([--enable-handle-fork], + [Attempt to ensure a usable collector after fork() in multi-threaded + programs.])]) + +if test "${enable_handle_fork}" = yes; then + AC_DEFINE(HANDLE_FORK, 1, + [Define to install pthread_atfork() handlers by default.]) +elif test "${enable_handle_fork}" = no; then + AC_DEFINE(NO_HANDLE_FORK, 1, + [Prohibit installation of pthread_atfork() handlers.]) +fi + +dnl This is something of a hack. When cross-compiling we turn off +dnl some functionality. We also enable the "small" configuration. +dnl These is only correct when targeting an embedded system. FIXME. +if test -n "${with_cross_host}"; then + AC_DEFINE([NO_CLOCK], 1, [Define to not use system clock (cross compiling).]) + AC_DEFINE([SMALL_CONFIG], 1, + [Define to tune the collector for small heap sizes.]) +fi + +if test "$enable_gc_debug" = "no"; then + AC_DEFINE([NO_DEBUGGING], 1, + [Disable debugging, like GC_dump and its callees.]) +fi + +AC_SUBST(UNWINDLIBS) + +AC_ARG_ENABLE(gc-assertions, + [AC_HELP_STRING([--enable-gc-assertions], + [collector-internal assertion checking])]) +if test "${enable_gc_assertions}" = yes; then + AC_DEFINE([GC_ASSERTIONS], 1, [Define to enable internal debug assertions.]) +fi + +AC_ARG_ENABLE(munmap, + [AC_HELP_STRING([--enable-munmap=N], + [return page to the os if empty for N collections])], + MUNMAP_THRESHOLD=$enableval) +if test x$enable_munmap != x -a x$enable_munmap != xno; then + AC_DEFINE([USE_MMAP], 1, + [Define to use mmap instead of sbrk to expand the heap.]) + AH_TEMPLATE([USE_WINALLOC], + [Define to use Win32 VirtualAlloc (instead of sbrk or + mmap) to expand the heap.]) + AC_DEFINE([USE_MUNMAP], 1, + [Define to return memory to OS with munmap calls + (see doc/README.macros).]) + if test "${MUNMAP_THRESHOLD}" = "yes"; then + MUNMAP_THRESHOLD=6 + fi + AC_DEFINE_UNQUOTED([MUNMAP_THRESHOLD], [${MUNMAP_THRESHOLD}], + [Number of GC cycles to wait before unmapping an unused block.]) +else + if test "${gc_use_mmap}" = "yes"; then + AC_DEFINE([USE_MMAP], 1, + [Define to use mmap instead of sbrk to expand the heap.]) + fi +fi + +AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host") + +AC_ARG_ENABLE(werror, [--enable-werror Pass -Werror to the C compiler], + werror_flag=$enableval, werror_flag=no) +if test x$werror_flag = xyes; then + WERROR_CFLAGS="-Werror" + case "$host" in + # _dyld_bind_fully_image_containing_address is deprecated in OS X 10.5+ + *-*-darwin*) + WERROR_CFLAGS="$WERROR_CFLAGS -Wno-deprecated-declarations" + ;; + esac +fi +AC_SUBST([WERROR_CFLAGS]) + +AC_ARG_ENABLE(single-obj-compilation, + [AC_HELP_STRING([--enable-single-obj-compilation], + [Compile all library .c files into single .o])], + [single_obj_compilation=yes]) +AM_CONDITIONAL([SINGLE_GC_OBJ], [test "$single_obj_compilation" = "yes"]) + +AC_ARG_ENABLE(gcov, AC_HELP_STRING([--enable-gcov], + [Turn on code coverage analysis])) +if test "$enable_gcov" = "yes"; then + CFLAGS="$CFLAGS --coverage" + if test "${enable_shared}" = no; then + # FIXME: As of g++-4.8.4/x86_64, in case of shared library build, test_cpp + # linkage fails with "hidden symbol atexit is referenced by DSO" message. + CXXFLAGS="$CXXFLAGS --coverage" + fi + # Turn off optimization to get accurate line numbers. + CFLAGS=`echo "$CFLAGS" | sed -e 's/-O\(1\|2\|3\|4\|s\|fast\)\?//g'` + CXXFLAGS=`echo "$CXXFLAGS" | sed -e 's/-O\(1\|2\|3\|4\|s\|fast\)\?//g'` +fi + +AC_ARG_ENABLE(docs, + [AC_HELP_STRING([--disable-docs], + [Do not build and install documentation])]) +AM_CONDITIONAL(ENABLE_DOCS, test x$enable_docs != xno) + +# Atomic Ops +# ---------- + +# Do we want to use an external libatomic_ops? By default use it if it's +# found. +AC_ARG_WITH([libatomic-ops], + [AS_HELP_STRING([--with-libatomic-ops[=yes|no|check]], + [Use an external libatomic_ops? (default: check)])], + [], [with_libatomic_ops=check]) + +# Check for an external libatomic_ops if the above answer is "yes" or "check". +# If not found, fail on "yes", and convert "check" to "no". +# First, check that libatomic_ops usage is not disabled explicitly. +missing_libatomic_ops=false +AS_IF([test x"$with_libatomic_ops" != xno -a x"$THREADS" != xnone], + [ missing_libatomic_ops=true ]) + +# Note: "syntax error near unexpected token ATOMIC_OPS" reported by configure +# means Autotools pkg.m4 file was not found during aclocal.m4 generation; +# in this case, most probably, you should run pkg-config once before running +# autogen.sh (autoreconf); alternatively, comment out the following 3 lines. +AS_IF([test x$missing_libatomic_ops = xtrue], + [ PKG_CHECK_MODULES([ATOMIC_OPS], [atomic_ops], + [ missing_libatomic_ops=false ], [ [] ]) ]) + +# Retry with AC_CHECK_HEADER if PKG_CHECK_MODULES failed. +AS_IF([test x$missing_libatomic_ops = xtrue], + [ AC_CHECK_HEADER([atomic_ops.h], [missing_libatomic_ops=false]) ]) +AS_IF([test x$missing_libatomic_ops = xtrue], + [ AS_IF([test x"$with_libatomic_ops" != xcheck], + [ AC_MSG_ERROR([An external libatomic_ops was not found]) ]) + with_libatomic_ops=no ]) + +# If we have neither an external or an internal version, offer a useful hint +# and exit. +AS_IF([test x"$with_libatomic_ops" = xno \ + -a ! -e "$srcdir/libatomic_ops/src/atomic_ops.h"], + [ AC_MSG_ERROR([libatomic_ops is required. You can either install it on + your system, or fetch and unpack a recent version into the + source directory and link or rename it to libatomic_ops.]) ]) + +# Finally, emit the definitions for bundled or external AO. +AC_MSG_CHECKING([which libatomic_ops to use]) +AS_IF([test x"$with_libatomic_ops" != xno], + [ AS_IF([test x"$THREADS" != xnone], + [ AC_MSG_RESULT([external]) ], [ AC_MSG_RESULT([none]) ]) ], + [ AC_MSG_RESULT([internal]) + ATOMIC_OPS_CFLAGS='-I$(top_builddir)/libatomic_ops/src -I$(top_srcdir)/libatomic_ops/src' + ATOMIC_OPS_LIBS="" + AC_SUBST([ATOMIC_OPS_CFLAGS]) + AC_CONFIG_SUBDIRS([libatomic_ops]) + ]) +AM_CONDITIONAL([USE_INTERNAL_LIBATOMIC_OPS], + [test x$with_libatomic_ops = xno -a x"$THREADS" != xnone]) +AM_CONDITIONAL([NEED_ATOMIC_OPS_ASM], + [test x$with_libatomic_ops = xno -a x$need_atomic_ops_asm = xtrue]) + +dnl Produce the Files +dnl ----------------- + +AC_CONFIG_FILES([Makefile bdw-gc.pc]) + +AC_CONFIG_COMMANDS([default],, + [ srcdir="${srcdir}" + host=${host} + CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} + CC="${CC}" + DEFS="$DEFS" ]) + +AC_OUTPUT diff --git a/cord/cord.am b/cord/cord.am new file mode 100644 index 0000000..b8794c2 --- /dev/null +++ b/cord/cord.am @@ -0,0 +1,34 @@ +## This file is processed with automake. + +# Info (current:revision:age) for the Libtool versioning system. +# These numbers should be updated at most once just before the release, +# and, optionally, at most once during the development (after the release). +LIBCORD_VER_INFO = 4:0:3 + +lib_LTLIBRARIES += libcord.la + +libcord_la_LIBADD = $(top_builddir)/libgc.la +libcord_la_LDFLAGS = -version-info $(LIBCORD_VER_INFO) -no-undefined +libcord_la_CPPFLAGS = $(AM_CPPFLAGS) + +libcord_la_SOURCES = \ + cord/cordbscs.c \ + cord/cordprnt.c \ + cord/cordxtra.c + +TESTS += cordtest$(EXEEXT) +check_PROGRAMS += cordtest +cordtest_SOURCES = cord/tests/cordtest.c +cordtest_LDADD = $(top_builddir)/libgc.la $(top_builddir)/libcord.la + +EXTRA_DIST += \ + cord/tests/de.c \ + cord/tests/de_cmds.h \ + cord/tests/de_win.c \ + cord/tests/de_win.h \ + cord/tests/de_win.rc + +pkginclude_HEADERS += \ + include/cord.h \ + include/cord_pos.h \ + include/ec.h diff --git a/cord/cordbscs.c b/cord/cordbscs.c new file mode 100644 index 0000000..032c4fb --- /dev/null +++ b/cord/cordbscs.c @@ -0,0 +1,929 @@ +/* + * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif +#ifndef CORD_BUILD +# define CORD_BUILD +#endif + +# include "gc.h" +# include "cord.h" +# include +# include +# include + +/* An implementation of the cord primitives. These are the only */ +/* Functions that understand the representation. We perform only */ +/* minimal checks on arguments to these functions. Out of bounds */ +/* arguments to the iteration functions may result in client functions */ +/* invoked on garbage data. In most cases, client functions should be */ +/* programmed defensively enough that this does not result in memory */ +/* smashes. */ + +typedef void (* oom_fn)(void); + +oom_fn CORD_oom_fn = (oom_fn) 0; + +# define OUT_OF_MEMORY { if (CORD_oom_fn != (oom_fn) 0) (*CORD_oom_fn)(); \ + ABORT("Out of memory"); } +# define ABORT(msg) { fprintf(stderr, "%s\n", msg); abort(); } + +typedef unsigned long word; + +typedef union { + struct Concatenation { + char null; + char header; + char depth; /* concatenation nesting depth. */ + unsigned char left_len; + /* Length of left child if it is sufficiently */ + /* short; 0 otherwise. */ +# define MAX_LEFT_LEN 255 + word len; + CORD left; /* length(left) > 0 */ + CORD right; /* length(right) > 0 */ + } concatenation; + struct Function { + char null; + char header; + char depth; /* always 0 */ + char left_len; /* always 0 */ + word len; + CORD_fn fn; + void * client_data; + } function; + struct Generic { + char null; + char header; + char depth; + char left_len; + word len; + } generic; + char string[1]; +} CordRep; + +# define CONCAT_HDR 1 + +# define FN_HDR 4 +# define SUBSTR_HDR 6 + /* Substring nodes are a special case of function nodes. */ + /* The client_data field is known to point to a substr_args */ + /* structure, and the function is either CORD_apply_access_fn */ + /* or CORD_index_access_fn. */ + +/* The following may be applied only to function and concatenation nodes: */ +#define IS_CONCATENATION(s) (((CordRep *)s)->generic.header == CONCAT_HDR) + +#define IS_FUNCTION(s) ((((CordRep *)s)->generic.header & FN_HDR) != 0) + +#define IS_SUBSTR(s) (((CordRep *)s)->generic.header == SUBSTR_HDR) + +#define LEN(s) (((CordRep *)s) -> generic.len) +#define DEPTH(s) (((CordRep *)s) -> generic.depth) +#define GEN_LEN(s) (CORD_IS_STRING(s) ? strlen(s) : LEN(s)) + +#define LEFT_LEN(c) ((c) -> left_len != 0? \ + (c) -> left_len \ + : (CORD_IS_STRING((c) -> left) ? \ + (c) -> len - GEN_LEN((c) -> right) \ + : LEN((c) -> left))) + +#define SHORT_LIMIT (sizeof(CordRep) - 1) + /* Cords shorter than this are C strings */ + + +/* Dump the internal representation of x to stdout, with initial */ +/* indentation level n. */ +void CORD_dump_inner(CORD x, unsigned n) +{ + register size_t i; + + for (i = 0; i < (size_t)n; i++) { + fputs(" ", stdout); + } + if (x == 0) { + fputs("NIL\n", stdout); + } else if (CORD_IS_STRING(x)) { + for (i = 0; i <= SHORT_LIMIT; i++) { + if (x[i] == '\0') break; + putchar(x[i]); + } + if (x[i] != '\0') fputs("...", stdout); + putchar('\n'); + } else if (IS_CONCATENATION(x)) { + register struct Concatenation * conc = + &(((CordRep *)x) -> concatenation); + printf("Concatenation: %p (len: %d, depth: %d)\n", + (void *)x, (int)(conc -> len), (int)(conc -> depth)); + CORD_dump_inner(conc -> left, n+1); + CORD_dump_inner(conc -> right, n+1); + } else /* function */{ + register struct Function * func = + &(((CordRep *)x) -> function); + if (IS_SUBSTR(x)) printf("(Substring) "); + printf("Function: %p (len: %d): ", (void *)x, (int)(func -> len)); + for (i = 0; i < 20 && i < func -> len; i++) { + putchar((*(func -> fn))(i, func -> client_data)); + } + if (i < func -> len) fputs("...", stdout); + putchar('\n'); + } +} + +/* Dump the internal representation of x to stdout */ +void CORD_dump(CORD x) +{ + CORD_dump_inner(x, 0); + fflush(stdout); +} + +CORD CORD_cat_char_star(CORD x, const char * y, size_t leny) +{ + register size_t result_len; + register size_t lenx; + register int depth; + + if (x == CORD_EMPTY) return(y); + if (leny == 0) return(x); + if (CORD_IS_STRING(x)) { + lenx = strlen(x); + result_len = lenx + leny; + if (result_len <= SHORT_LIMIT) { + register char * result = GC_MALLOC_ATOMIC(result_len+1); + + if (result == 0) OUT_OF_MEMORY; + memcpy(result, x, lenx); + memcpy(result + lenx, y, leny); + result[result_len] = '\0'; + return((CORD) result); + } else { + depth = 1; + } + } else { + register CORD right; + register CORD left; + register char * new_right; + + lenx = LEN(x); + + if (leny <= SHORT_LIMIT/2 + && IS_CONCATENATION(x) + && CORD_IS_STRING(right = ((CordRep *)x) -> concatenation.right)) { + size_t right_len; + + /* Merge y into right part of x. */ + if (!CORD_IS_STRING(left = ((CordRep *)x) -> concatenation.left)) { + right_len = lenx - LEN(left); + } else if (((CordRep *)x) -> concatenation.left_len != 0) { + right_len = lenx - ((CordRep *)x) -> concatenation.left_len; + } else { + right_len = strlen(right); + } + result_len = right_len + leny; /* length of new_right */ + if (result_len <= SHORT_LIMIT) { + new_right = GC_MALLOC_ATOMIC(result_len + 1); + if (new_right == 0) OUT_OF_MEMORY; + memcpy(new_right, right, right_len); + memcpy(new_right + right_len, y, leny); + new_right[result_len] = '\0'; + y = new_right; + leny = result_len; + x = left; + lenx -= right_len; + /* Now fall through to concatenate the two pieces: */ + } + if (CORD_IS_STRING(x)) { + depth = 1; + } else { + depth = DEPTH(x) + 1; + } + } else { + depth = DEPTH(x) + 1; + } + result_len = lenx + leny; + } + { + /* The general case; lenx, result_len is known: */ + register struct Concatenation * result; + + result = GC_NEW(struct Concatenation); + if (result == 0) OUT_OF_MEMORY; + result->header = CONCAT_HDR; + result->depth = (char)depth; + if (lenx <= MAX_LEFT_LEN) + result->left_len = (unsigned char)lenx; + result->len = (word)result_len; + result->left = x; + result->right = y; + if (depth >= MAX_DEPTH) { + return(CORD_balance((CORD)result)); + } else { + return((CORD) result); + } + } +} + + +CORD CORD_cat(CORD x, CORD y) +{ + register size_t result_len; + register int depth; + register size_t lenx; + + if (x == CORD_EMPTY) return(y); + if (y == CORD_EMPTY) return(x); + if (CORD_IS_STRING(y)) { + return(CORD_cat_char_star(x, y, strlen(y))); + } else if (CORD_IS_STRING(x)) { + lenx = strlen(x); + depth = DEPTH(y) + 1; + } else { + register int depthy = DEPTH(y); + + lenx = LEN(x); + depth = DEPTH(x) + 1; + if (depthy >= depth) depth = depthy + 1; + } + result_len = lenx + LEN(y); + { + register struct Concatenation * result; + + result = GC_NEW(struct Concatenation); + if (result == 0) OUT_OF_MEMORY; + result->header = CONCAT_HDR; + result->depth = (char)depth; + if (lenx <= MAX_LEFT_LEN) + result->left_len = (unsigned char)lenx; + result->len = (word)result_len; + result->left = x; + result->right = y; + if (depth >= MAX_DEPTH) { + return(CORD_balance((CORD)result)); + } else { + return((CORD) result); + } + } +} + + +static CordRep *CORD_from_fn_inner(CORD_fn fn, void * client_data, size_t len) +{ + if (len == 0) return(0); + if (len <= SHORT_LIMIT) { + register char * result; + register size_t i; + char buf[SHORT_LIMIT+1]; + + for (i = 0; i < len; i++) { + char c = (*fn)(i, client_data); + + if (c == '\0') goto gen_case; + buf[i] = c; + } + + result = GC_MALLOC_ATOMIC(len+1); + if (result == 0) OUT_OF_MEMORY; + memcpy(result, buf, len); + result[len] = '\0'; + return (CordRep *)result; + } + gen_case: + { + register struct Function * result; + + result = GC_NEW(struct Function); + if (result == 0) OUT_OF_MEMORY; + result->header = FN_HDR; + /* depth is already 0 */ + result->len = (word)len; + result->fn = fn; + result->client_data = client_data; + return (CordRep *)result; + } +} + +CORD CORD_from_fn(CORD_fn fn, void * client_data, size_t len) +{ + return (/* const */ CORD) CORD_from_fn_inner(fn, client_data, len); +} + +size_t CORD_len(CORD x) +{ + if (x == 0) { + return(0); + } else { + return(GEN_LEN(x)); + } +} + +struct substr_args { + CordRep * sa_cord; + size_t sa_index; +}; + +char CORD_index_access_fn(size_t i, void * client_data) +{ + register struct substr_args *descr = (struct substr_args *)client_data; + + return(((char *)(descr->sa_cord))[i + descr->sa_index]); +} + +char CORD_apply_access_fn(size_t i, void * client_data) +{ + register struct substr_args *descr = (struct substr_args *)client_data; + register struct Function * fn_cord = &(descr->sa_cord->function); + + return((*(fn_cord->fn))(i + descr->sa_index, fn_cord->client_data)); +} + +/* A version of CORD_substr that simply returns a function node, thus */ +/* postponing its work. The fourth argument is a function that may */ +/* be used for efficient access to the ith character. */ +/* Assumes i >= 0 and i + n < length(x). */ +CORD CORD_substr_closure(CORD x, size_t i, size_t n, CORD_fn f) +{ + register struct substr_args * sa = GC_NEW(struct substr_args); + CordRep * result; + + if (sa == 0) OUT_OF_MEMORY; + sa->sa_cord = (CordRep *)x; + sa->sa_index = i; + result = CORD_from_fn_inner(f, (void *)sa, n); + if ((CORD)result != CORD_EMPTY && 0 == result -> function.null) + result -> function.header = SUBSTR_HDR; + return (CORD)result; +} + +# define SUBSTR_LIMIT (10 * SHORT_LIMIT) + /* Substrings of function nodes and flat strings shorter than */ + /* this are flat strings. Othewise we use a functional */ + /* representation, which is significantly slower to access. */ + +/* A version of CORD_substr that assumes i >= 0, n > 0, and i + n < length(x).*/ +CORD CORD_substr_checked(CORD x, size_t i, size_t n) +{ + if (CORD_IS_STRING(x)) { + if (n > SUBSTR_LIMIT) { + return(CORD_substr_closure(x, i, n, CORD_index_access_fn)); + } else { + register char * result = GC_MALLOC_ATOMIC(n+1); + + if (result == 0) OUT_OF_MEMORY; + strncpy(result, x+i, n); + result[n] = '\0'; + return(result); + } + } else if (IS_CONCATENATION(x)) { + register struct Concatenation * conc + = &(((CordRep *)x) -> concatenation); + register size_t left_len; + register size_t right_len; + + left_len = LEFT_LEN(conc); + right_len = conc -> len - left_len; + if (i >= left_len) { + if (n == right_len) return(conc -> right); + return(CORD_substr_checked(conc -> right, i - left_len, n)); + } else if (i+n <= left_len) { + if (n == left_len) return(conc -> left); + return(CORD_substr_checked(conc -> left, i, n)); + } else { + /* Need at least one character from each side. */ + register CORD left_part; + register CORD right_part; + register size_t left_part_len = left_len - i; + + if (i == 0) { + left_part = conc -> left; + } else { + left_part = CORD_substr_checked(conc -> left, i, left_part_len); + } + if (i + n == right_len + left_len) { + right_part = conc -> right; + } else { + right_part = CORD_substr_checked(conc -> right, 0, + n - left_part_len); + } + return(CORD_cat(left_part, right_part)); + } + } else /* function */ { + if (n > SUBSTR_LIMIT) { + if (IS_SUBSTR(x)) { + /* Avoid nesting substring nodes. */ + register struct Function * f = &(((CordRep *)x) -> function); + register struct substr_args *descr = + (struct substr_args *)(f -> client_data); + + return(CORD_substr_closure((CORD)descr->sa_cord, + i + descr->sa_index, + n, f -> fn)); + } else { + return(CORD_substr_closure(x, i, n, CORD_apply_access_fn)); + } + } else { + char * result; + register struct Function * f = &(((CordRep *)x) -> function); + char buf[SUBSTR_LIMIT+1]; + register char * p = buf; + register size_t j; + register size_t lim = i + n; + + for (j = i; j < lim; j++) { + char c = (*(f -> fn))(j, f -> client_data); + + if (c == '\0') { + return(CORD_substr_closure(x, i, n, CORD_apply_access_fn)); + } + *p++ = c; + } + result = GC_MALLOC_ATOMIC(n+1); + if (result == 0) OUT_OF_MEMORY; + memcpy(result, buf, n); + result[n] = '\0'; + return(result); + } + } +} + +CORD CORD_substr(CORD x, size_t i, size_t n) +{ + register size_t len = CORD_len(x); + + if (i >= len || n == 0) return(0); + if (i + n > len) n = len - i; + return(CORD_substr_checked(x, i, n)); +} + +/* See cord.h for definition. We assume i is in range. */ +int CORD_iter5(CORD x, size_t i, CORD_iter_fn f1, + CORD_batched_iter_fn f2, void * client_data) +{ + if (x == 0) return(0); + if (CORD_IS_STRING(x)) { + register const char *p = x+i; + + if (*p == '\0') ABORT("2nd arg to CORD_iter5 too big"); + if (f2 != CORD_NO_FN) { + return((*f2)(p, client_data)); + } else { + while (*p) { + if ((*f1)(*p, client_data)) return(1); + p++; + } + return(0); + } + } else if (IS_CONCATENATION(x)) { + register struct Concatenation * conc + = &(((CordRep *)x) -> concatenation); + + + if (i > 0) { + register size_t left_len = LEFT_LEN(conc); + + if (i >= left_len) { + return(CORD_iter5(conc -> right, i - left_len, f1, f2, + client_data)); + } + } + if (CORD_iter5(conc -> left, i, f1, f2, client_data)) { + return(1); + } + return(CORD_iter5(conc -> right, 0, f1, f2, client_data)); + } else /* function */ { + register struct Function * f = &(((CordRep *)x) -> function); + register size_t j; + register size_t lim = f -> len; + + for (j = i; j < lim; j++) { + if ((*f1)((*(f -> fn))(j, f -> client_data), client_data)) { + return(1); + } + } + return(0); + } +} + +#undef CORD_iter +int CORD_iter(CORD x, CORD_iter_fn f1, void * client_data) +{ + return(CORD_iter5(x, 0, f1, CORD_NO_FN, client_data)); +} + +int CORD_riter4(CORD x, size_t i, CORD_iter_fn f1, void * client_data) +{ + if (x == 0) return(0); + if (CORD_IS_STRING(x)) { + register const char *p = x + i; + + for(;;) { + char c = *p; + + if (c == '\0') ABORT("2nd arg to CORD_riter4 too big"); + if ((*f1)(c, client_data)) return(1); + if (p == x) break; + p--; + } + return(0); + } else if (IS_CONCATENATION(x)) { + register struct Concatenation * conc + = &(((CordRep *)x) -> concatenation); + register CORD left_part = conc -> left; + register size_t left_len; + + left_len = LEFT_LEN(conc); + if (i >= left_len) { + if (CORD_riter4(conc -> right, i - left_len, f1, client_data)) { + return(1); + } + return(CORD_riter4(left_part, left_len - 1, f1, client_data)); + } else { + return(CORD_riter4(left_part, i, f1, client_data)); + } + } else /* function */ { + register struct Function * f = &(((CordRep *)x) -> function); + register size_t j; + + for (j = i; ; j--) { + if ((*f1)((*(f -> fn))(j, f -> client_data), client_data)) { + return(1); + } + if (j == 0) return(0); + } + } +} + +int CORD_riter(CORD x, CORD_iter_fn f1, void * client_data) +{ + size_t len = CORD_len(x); + if (len == 0) return(0); + return(CORD_riter4(x, len - 1, f1, client_data)); +} + +/* + * The following functions are concerned with balancing cords. + * Strategy: + * Scan the cord from left to right, keeping the cord scanned so far + * as a forest of balanced trees of exponentially decreasing length. + * When a new subtree needs to be added to the forest, we concatenate all + * shorter ones to the new tree in the appropriate order, and then insert + * the result into the forest. + * Crucial invariants: + * 1. The concatenation of the forest (in decreasing order) with the + * unscanned part of the rope is equal to the rope being balanced. + * 2. All trees in the forest are balanced. + * 3. forest[i] has depth at most i. + */ + +typedef struct { + CORD c; + size_t len; /* Actual length of c */ +} ForestElement; + +static size_t min_len [ MAX_DEPTH ]; + +static int min_len_init = 0; + +int CORD_max_len; + +typedef ForestElement Forest [ MAX_DEPTH ]; + /* forest[i].len >= fib(i+1) */ + /* The string is the concatenation */ + /* of the forest in order of DECREASING */ + /* indices. */ + +void CORD_init_min_len(void) +{ + register int i; + size_t last, previous; + + min_len[0] = previous = 1; + min_len[1] = last = 2; + for (i = 2; i < MAX_DEPTH; i++) { + size_t current = last + previous; + + if (current < last) /* overflow */ current = last; + min_len[i] = current; + previous = last; + last = current; + } + CORD_max_len = (int)last - 1; + min_len_init = 1; +} + + +void CORD_init_forest(ForestElement * forest, size_t max_len) +{ + register int i; + + for (i = 0; i < MAX_DEPTH; i++) { + forest[i].c = 0; + if (min_len[i] > max_len) return; + } + ABORT("Cord too long"); +} + +/* Add a leaf to the appropriate level in the forest, cleaning */ +/* out lower levels as necessary. */ +/* Also works if x is a balanced tree of concatenations; however */ +/* in this case an extra concatenation node may be inserted above x; */ +/* This node should not be counted in the statement of the invariants. */ +void CORD_add_forest(ForestElement * forest, CORD x, size_t len) +{ + register int i = 0; + register CORD sum = CORD_EMPTY; + register size_t sum_len = 0; + + while (len > min_len[i + 1]) { + if (forest[i].c != 0) { + sum = CORD_cat(forest[i].c, sum); + sum_len += forest[i].len; + forest[i].c = 0; + } + i++; + } + /* Sum has depth at most 1 greter than what would be required */ + /* for balance. */ + sum = CORD_cat(sum, x); + sum_len += len; + /* If x was a leaf, then sum is now balanced. To see this */ + /* consider the two cases in which forest[i-1] either is or is */ + /* not empty. */ + while (sum_len >= min_len[i]) { + if (forest[i].c != 0) { + sum = CORD_cat(forest[i].c, sum); + sum_len += forest[i].len; + /* This is again balanced, since sum was balanced, and has */ + /* allowable depth that differs from i by at most 1. */ + forest[i].c = 0; + } + i++; + } + i--; + forest[i].c = sum; + forest[i].len = sum_len; +} + +CORD CORD_concat_forest(ForestElement * forest, size_t expected_len) +{ + register int i = 0; + CORD sum = 0; + size_t sum_len = 0; + + while (sum_len != expected_len) { + if (forest[i].c != 0) { + sum = CORD_cat(forest[i].c, sum); + sum_len += forest[i].len; + } + i++; + } + return(sum); +} + +/* Insert the frontier of x into forest. Balanced subtrees are */ +/* treated as leaves. This potentially adds one to the depth */ +/* of the final tree. */ +void CORD_balance_insert(CORD x, size_t len, ForestElement * forest) +{ + register int depth; + + if (CORD_IS_STRING(x)) { + CORD_add_forest(forest, x, len); + } else if (IS_CONCATENATION(x) + && ((depth = DEPTH(x)) >= MAX_DEPTH + || len < min_len[depth])) { + register struct Concatenation * conc + = &(((CordRep *)x) -> concatenation); + size_t left_len = LEFT_LEN(conc); + + CORD_balance_insert(conc -> left, left_len, forest); + CORD_balance_insert(conc -> right, len - left_len, forest); + } else /* function or balanced */ { + CORD_add_forest(forest, x, len); + } +} + + +CORD CORD_balance(CORD x) +{ + Forest forest; + register size_t len; + + if (x == 0) return(0); + if (CORD_IS_STRING(x)) return(x); + if (!min_len_init) CORD_init_min_len(); + len = LEN(x); + CORD_init_forest(forest, len); + CORD_balance_insert(x, len, forest); + return(CORD_concat_forest(forest, len)); +} + + +/* Position primitives */ + +/* Private routines to deal with the hard cases only: */ + +/* P contains a prefix of the path to cur_pos. Extend it to a full */ +/* path and set up leaf info. */ +/* Return 0 if past the end of cord, 1 o.w. */ +void CORD__extend_path(register CORD_pos p) +{ + register struct CORD_pe * current_pe = &(p[0].path[p[0].path_len]); + register CORD top = current_pe -> pe_cord; + register size_t pos = p[0].cur_pos; + register size_t top_pos = current_pe -> pe_start_pos; + register size_t top_len = GEN_LEN(top); + + /* Fill in the rest of the path. */ + while(!CORD_IS_STRING(top) && IS_CONCATENATION(top)) { + register struct Concatenation * conc = + &(((CordRep *)top) -> concatenation); + register size_t left_len; + + left_len = LEFT_LEN(conc); + current_pe++; + if (pos >= top_pos + left_len) { + current_pe -> pe_cord = top = conc -> right; + current_pe -> pe_start_pos = top_pos = top_pos + left_len; + top_len -= left_len; + } else { + current_pe -> pe_cord = top = conc -> left; + current_pe -> pe_start_pos = top_pos; + top_len = left_len; + } + p[0].path_len++; + } + /* Fill in leaf description for fast access. */ + if (CORD_IS_STRING(top)) { + p[0].cur_leaf = top; + p[0].cur_start = top_pos; + p[0].cur_end = top_pos + top_len; + } else { + p[0].cur_end = 0; + } + if (pos >= top_pos + top_len) p[0].path_len = CORD_POS_INVALID; +} + +char CORD__pos_fetch(register CORD_pos p) +{ + /* Leaf is a function node */ + struct CORD_pe * pe = &((p)[0].path[(p)[0].path_len]); + CORD leaf = pe -> pe_cord; + register struct Function * f = &(((CordRep *)leaf) -> function); + + if (!IS_FUNCTION(leaf)) ABORT("CORD_pos_fetch: bad leaf"); + return ((*(f -> fn))(p[0].cur_pos - pe -> pe_start_pos, f -> client_data)); +} + +void CORD__next(register CORD_pos p) +{ + register size_t cur_pos = p[0].cur_pos + 1; + register struct CORD_pe * current_pe = &((p)[0].path[(p)[0].path_len]); + register CORD leaf = current_pe -> pe_cord; + + /* Leaf is not a string or we're at end of leaf */ + p[0].cur_pos = cur_pos; + if (!CORD_IS_STRING(leaf)) { + /* Function leaf */ + register struct Function * f = &(((CordRep *)leaf) -> function); + register size_t start_pos = current_pe -> pe_start_pos; + register size_t end_pos = start_pos + f -> len; + + if (cur_pos < end_pos) { + /* Fill cache and return. */ + register size_t i; + register size_t limit = cur_pos + FUNCTION_BUF_SZ; + register CORD_fn fn = f -> fn; + register void * client_data = f -> client_data; + + if (limit > end_pos) { + limit = end_pos; + } + for (i = cur_pos; i < limit; i++) { + p[0].function_buf[i - cur_pos] = + (*fn)(i - start_pos, client_data); + } + p[0].cur_start = cur_pos; + p[0].cur_leaf = p[0].function_buf; + p[0].cur_end = limit; + return; + } + } + /* End of leaf */ + /* Pop the stack until we find two concatenation nodes with the */ + /* same start position: this implies we were in left part. */ + { + while (p[0].path_len > 0 + && current_pe[0].pe_start_pos != current_pe[-1].pe_start_pos) { + p[0].path_len--; + current_pe--; + } + if (p[0].path_len == 0) { + p[0].path_len = CORD_POS_INVALID; + return; + } + } + p[0].path_len--; + CORD__extend_path(p); +} + +void CORD__prev(register CORD_pos p) +{ + register struct CORD_pe * pe = &(p[0].path[p[0].path_len]); + + if (p[0].cur_pos == 0) { + p[0].path_len = CORD_POS_INVALID; + return; + } + p[0].cur_pos--; + if (p[0].cur_pos >= pe -> pe_start_pos) return; + + /* Beginning of leaf */ + + /* Pop the stack until we find two concatenation nodes with the */ + /* different start position: this implies we were in right part. */ + { + register struct CORD_pe * current_pe = &((p)[0].path[(p)[0].path_len]); + + while (p[0].path_len > 0 + && current_pe[0].pe_start_pos == current_pe[-1].pe_start_pos) { + p[0].path_len--; + current_pe--; + } + } + p[0].path_len--; + CORD__extend_path(p); +} + +#undef CORD_pos_fetch +#undef CORD_next +#undef CORD_prev +#undef CORD_pos_to_index +#undef CORD_pos_to_cord +#undef CORD_pos_valid + +char CORD_pos_fetch(register CORD_pos p) +{ + if (p[0].cur_end != 0) { + return(p[0].cur_leaf[p[0].cur_pos - p[0].cur_start]); + } else { + return(CORD__pos_fetch(p)); + } +} + +void CORD_next(CORD_pos p) +{ + if (p[0].cur_pos + 1 < p[0].cur_end) { + p[0].cur_pos++; + } else { + CORD__next(p); + } +} + +void CORD_prev(CORD_pos p) +{ + if (p[0].cur_end != 0 && p[0].cur_pos > p[0].cur_start) { + p[0].cur_pos--; + } else { + CORD__prev(p); + } +} + +size_t CORD_pos_to_index(CORD_pos p) +{ + return(p[0].cur_pos); +} + +CORD CORD_pos_to_cord(CORD_pos p) +{ + return(p[0].path[0].pe_cord); +} + +int CORD_pos_valid(CORD_pos p) +{ + return(p[0].path_len != CORD_POS_INVALID); +} + +void CORD_set_pos(CORD_pos p, CORD x, size_t i) +{ + if (x == CORD_EMPTY) { + p[0].path_len = CORD_POS_INVALID; + return; + } + p[0].path[0].pe_cord = x; + p[0].path[0].pe_start_pos = 0; + p[0].path_len = 0; + p[0].cur_pos = i; + CORD__extend_path(p); +} diff --git a/cord/cordprnt.c b/cord/cordprnt.c new file mode 100644 index 0000000..051e893 --- /dev/null +++ b/cord/cordprnt.c @@ -0,0 +1,437 @@ +/* + * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ +/* An sprintf implementation that understands cords. This is probably */ +/* not terribly portable. It assumes an ANSI stdarg.h. It further */ +/* assumes that I can make copies of va_list variables, and read */ +/* arguments repeatedly by applying va_arg to the copies. This */ +/* could be avoided at some performance cost. */ +/* We also assume that unsigned and signed integers of various kinds */ +/* have the same sizes, and can be cast back and forth. */ +/* We assume that void * and char * have the same size. */ +/* All this cruft is needed because we want to rely on the underlying */ +/* sprintf implementation whenever possible. */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif +#ifndef CORD_BUILD +# define CORD_BUILD +#endif + +#include "cord.h" +#include "ec.h" + +#include +#include +#include +#include + +#include "gc.h" + +#define CONV_SPEC_LEN 50 /* Maximum length of a single */ + /* conversion specification. */ +#define CONV_RESULT_LEN 50 /* Maximum length of any */ + /* conversion with default */ + /* width and prec. */ + +#define OUT_OF_MEMORY do { \ + if (CORD_oom_fn != 0) (*CORD_oom_fn)(); \ + fprintf(stderr, "Out of memory\n"); \ + abort(); \ + } while (0) + +static int ec_len(CORD_ec x) +{ + return(CORD_len(x[0].ec_cord) + (x[0].ec_bufptr - x[0].ec_buf)); +} + +/* Possible nonumeric precision values. */ +# define NONE -1 +# define VARIABLE -2 +/* Copy the conversion specification from CORD_pos into the buffer buf */ +/* Return negative on error. */ +/* Source initially points one past the leading %. */ +/* It is left pointing at the conversion type. */ +/* Assign field width and precision to *width and *prec. */ +/* If width or prec is *, VARIABLE is assigned. */ +/* Set *left to 1 if left adjustment flag is present. */ +/* Set *long_arg to 1 if long flag ('l' or 'L') is present, or to */ +/* -1 if 'h' is present. */ +static int extract_conv_spec(CORD_pos source, char *buf, + int * width, int *prec, int *left, int * long_arg) +{ + register int result = 0; + register int current_number = 0; + register int saw_period = 0; + register int saw_number = 0; + register int chars_so_far = 0; + register char current; + + *width = NONE; + buf[chars_so_far++] = '%'; + while(CORD_pos_valid(source)) { + if (chars_so_far >= CONV_SPEC_LEN) return(-1); + current = CORD_pos_fetch(source); + buf[chars_so_far++] = current; + switch(current) { + case '*': + saw_number = 1; + current_number = VARIABLE; + break; + case '0': + if (!saw_number) { + /* Zero fill flag; ignore */ + break; + } + current_number *= 10; + break; + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + saw_number = 1; + current_number *= 10; + current_number += current - '0'; + break; + case '.': + saw_period = 1; + if(saw_number) { + *width = current_number; + saw_number = 0; + } + current_number = 0; + break; + case 'l': + case 'L': + *long_arg = 1; + current_number = 0; + break; + case 'h': + *long_arg = -1; + current_number = 0; + break; + case ' ': + case '+': + case '#': + current_number = 0; + break; + case '-': + *left = 1; + current_number = 0; + break; + case 'd': + case 'i': + case 'o': + case 'u': + case 'x': + case 'X': + case 'f': + case 'e': + case 'E': + case 'g': + case 'G': + case 'c': + case 'C': + case 's': + case 'S': + case 'p': + case 'n': + case 'r': + goto done; + default: + return(-1); + } + CORD_next(source); + } + return(-1); + done: + if (saw_number) { + if (saw_period) { + *prec = current_number; + } else { + *prec = NONE; + *width = current_number; + } + } else { + *prec = NONE; + } + buf[chars_so_far] = '\0'; + return(result); +} + +#if defined(DJGPP) || defined(__STRICT_ANSI__) + /* vsnprintf is missing in DJGPP (v2.0.3) */ +# define GC_VSNPRINTF(buf, bufsz, format, args) vsprintf(buf, format, args) +#elif defined(_MSC_VER) +# ifdef MSWINCE + /* _vsnprintf is deprecated in WinCE */ +# define GC_VSNPRINTF StringCchVPrintfA +# else +# define GC_VSNPRINTF _vsnprintf +# endif +#else +# define GC_VSNPRINTF vsnprintf +#endif + +int CORD_vsprintf(CORD * out, CORD format, va_list args) +{ + CORD_ec result; + register int count; + register char current; + CORD_pos pos; + char conv_spec[CONV_SPEC_LEN + 1]; + + CORD_ec_init(result); + for (CORD_set_pos(pos, format, 0); CORD_pos_valid(pos); CORD_next(pos)) { + current = CORD_pos_fetch(pos); + if (current == '%') { + CORD_next(pos); + if (!CORD_pos_valid(pos)) return(-1); + current = CORD_pos_fetch(pos); + if (current == '%') { + CORD_ec_append(result, current); + } else { + int width, prec; + int left_adj = 0; + int long_arg = 0; + CORD arg; + size_t len; + + if (extract_conv_spec(pos, conv_spec, + &width, &prec, + &left_adj, &long_arg) < 0) { + return(-1); + } + current = CORD_pos_fetch(pos); + switch(current) { + case 'n': + /* Assign length to next arg */ + if (long_arg == 0) { + int * pos_ptr; + pos_ptr = va_arg(args, int *); + *pos_ptr = ec_len(result); + } else if (long_arg > 0) { + long * pos_ptr; + pos_ptr = va_arg(args, long *); + *pos_ptr = ec_len(result); + } else { + short * pos_ptr; + pos_ptr = va_arg(args, short *); + *pos_ptr = ec_len(result); + } + goto done; + case 'r': + /* Append cord and any padding */ + if (width == VARIABLE) width = va_arg(args, int); + if (prec == VARIABLE) prec = va_arg(args, int); + arg = va_arg(args, CORD); + len = CORD_len(arg); + if (prec != NONE && len > (size_t)prec) { + if (prec < 0) return(-1); + arg = CORD_substr(arg, 0, prec); + len = (unsigned)prec; + } + if (width != NONE && len < (size_t)width) { + char * blanks = GC_MALLOC_ATOMIC(width-len+1); + + if (NULL == blanks) OUT_OF_MEMORY; + memset(blanks, ' ', width-len); + blanks[width-len] = '\0'; + if (left_adj) { + arg = CORD_cat(arg, blanks); + } else { + arg = CORD_cat(blanks, arg); + } + } + CORD_ec_append_cord(result, arg); + goto done; + case 'c': + if (width == NONE && prec == NONE) { + register char c; + + c = (char)va_arg(args, int); + CORD_ec_append(result, c); + goto done; + } + break; + case 's': + if (width == NONE && prec == NONE) { + char * str = va_arg(args, char *); + register char c; + + while ((c = *str++)) { + CORD_ec_append(result, c); + } + goto done; + } + break; + default: + break; + } + /* Use standard sprintf to perform conversion */ + { + register char * buf; + va_list vsprintf_args; + int max_size = 0; + int res = 0; + +# if defined(CPPCHECK) + va_copy(vsprintf_args, args); +# elif defined(__va_copy) + __va_copy(vsprintf_args, args); +# elif defined(__GNUC__) && !defined(__DJGPP__) \ + && !defined(__EMX__) /* and probably in other cases */ + va_copy(vsprintf_args, args); +# else + vsprintf_args = args; +# endif + if (width == VARIABLE) width = va_arg(args, int); + if (prec == VARIABLE) prec = va_arg(args, int); + if (width != NONE) max_size = width; + if (prec != NONE && prec > max_size) max_size = prec; + max_size += CONV_RESULT_LEN; + if (max_size >= CORD_BUFSZ) { + buf = GC_MALLOC_ATOMIC(max_size + 1); + if (NULL == buf) OUT_OF_MEMORY; + } else { + if (CORD_BUFSZ - (result[0].ec_bufptr-result[0].ec_buf) + < max_size) { + CORD_ec_flush_buf(result); + } + buf = result[0].ec_bufptr; + } + switch(current) { + case 'd': + case 'i': + case 'o': + case 'u': + case 'x': + case 'X': + case 'c': + if (long_arg <= 0) { + (void) va_arg(args, int); + } else /* long_arg > 0 */ { + (void) va_arg(args, long); + } + break; + case 's': + case 'p': + (void) va_arg(args, char *); + break; + case 'f': + case 'e': + case 'E': + case 'g': + case 'G': + (void) va_arg(args, double); + break; + default: + res = -1; + } + if (0 == res) + res = GC_VSNPRINTF(buf, max_size + 1, conv_spec, + vsprintf_args); +# if defined(CPPCHECK) || defined(__va_copy) \ + || (defined(__GNUC__) && !defined(__DJGPP__) \ + && !defined(__EMX__)) + va_end(vsprintf_args); +# endif + len = (size_t)res; + if ((char *)(GC_word)res == buf) { + /* old style vsprintf */ + len = strlen(buf); + } else if (res < 0) { + return(-1); + } + if (buf != result[0].ec_bufptr) { + register char c; + + while ((c = *buf++)) { + CORD_ec_append(result, c); + } + } else { + result[0].ec_bufptr = buf + len; + } + } + done:; + } + } else { + CORD_ec_append(result, current); + } + } + count = ec_len(result); + *out = CORD_balance(CORD_ec_to_cord(result)); + return(count); +} + +int CORD_sprintf(CORD * out, CORD format, ...) +{ + va_list args; + int result; + + va_start(args, format); + result = CORD_vsprintf(out, format, args); + va_end(args); + return(result); +} + +int CORD_fprintf(FILE * f, CORD format, ...) +{ + va_list args; + int result; + CORD out = CORD_EMPTY; /* initialized to prevent compiler warning */ + + va_start(args, format); + result = CORD_vsprintf(&out, format, args); + va_end(args); + if (result > 0) CORD_put(out, f); + return(result); +} + +int CORD_vfprintf(FILE * f, CORD format, va_list args) +{ + int result; + CORD out = CORD_EMPTY; + + result = CORD_vsprintf(&out, format, args); + if (result > 0) CORD_put(out, f); + return(result); +} + +int CORD_printf(CORD format, ...) +{ + va_list args; + int result; + CORD out = CORD_EMPTY; + + va_start(args, format); + result = CORD_vsprintf(&out, format, args); + va_end(args); + if (result > 0) CORD_put(out, stdout); + return(result); +} + +int CORD_vprintf(CORD format, va_list args) +{ + int result; + CORD out = CORD_EMPTY; + + result = CORD_vsprintf(&out, format, args); + if (result > 0) CORD_put(out, stdout); + return(result); +} diff --git a/cord/cordxtra.c b/cord/cordxtra.c new file mode 100644 index 0000000..1101964 --- /dev/null +++ b/cord/cordxtra.c @@ -0,0 +1,637 @@ +/* + * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* + * These are functions on cords that do not need to understand their + * implementation. They serve also serve as example client code for + * cord_basics. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif +#ifndef CORD_BUILD +# define CORD_BUILD +#endif + +# include +# include +# include +# include + +# include "cord.h" +# include "ec.h" + +# define I_HIDE_POINTERS /* So we get access to allocation lock. */ + /* We use this for lazy file reading, */ + /* so that we remain independent */ + /* of the threads primitives. */ +# include "gc.h" + +/* For now we assume that pointer reads and writes are atomic, */ +/* i.e. another thread always sees the state before or after */ +/* a write. This might be false on a Motorola M68K with */ +/* pointers that are not 32-bit aligned. But there probably */ +/* aren't too many threads packages running on those. */ +# define ATOMIC_WRITE(x,y) (x) = (y) +# define ATOMIC_READ(x) (*(x)) + +/* The standard says these are in stdio.h, but they aren't always: */ +# ifndef SEEK_SET +# define SEEK_SET 0 +# endif +# ifndef SEEK_END +# define SEEK_END 2 +# endif + +# define BUFSZ 2048 /* Size of stack allocated buffers when */ + /* we want large buffers. */ + +typedef void (* oom_fn)(void); + +# define OUT_OF_MEMORY { if (CORD_oom_fn != (oom_fn) 0) (*CORD_oom_fn)(); \ + ABORT("Out of memory"); } +# define ABORT(msg) { fprintf(stderr, "%s\n", msg); abort(); } + +#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) +# define CORD_ATTR_UNUSED __attribute__((__unused__)) +#else +# define CORD_ATTR_UNUSED /* empty */ +#endif + +CORD CORD_cat_char(CORD x, char c) +{ + register char * string; + + if (c == '\0') return(CORD_cat(x, CORD_nul(1))); + string = GC_MALLOC_ATOMIC(2); + if (string == 0) OUT_OF_MEMORY; + string[0] = c; + string[1] = '\0'; + return(CORD_cat_char_star(x, string, 1)); +} + +CORD CORD_catn(int nargs, ...) +{ + register CORD result = CORD_EMPTY; + va_list args; + register int i; + + va_start(args, nargs); + for (i = 0; i < nargs; i++) { + register CORD next = va_arg(args, CORD); + result = CORD_cat(result, next); + } + va_end(args); + return(result); +} + +typedef struct { + size_t len; + size_t count; + char * buf; +} CORD_fill_data; + +int CORD_fill_proc(char c, void * client_data) +{ + register CORD_fill_data * d = (CORD_fill_data *)client_data; + register size_t count = d -> count; + + (d -> buf)[count] = c; + d -> count = ++count; + if (count >= d -> len) { + return(1); + } else { + return(0); + } +} + +int CORD_batched_fill_proc(const char * s, void * client_data) +{ + register CORD_fill_data * d = (CORD_fill_data *)client_data; + register size_t count = d -> count; + register size_t max = d -> len; + register char * buf = d -> buf; + register const char * t = s; + + while((buf[count] = *t++) != '\0') { + count++; + if (count >= max) { + d -> count = count; + return(1); + } + } + d -> count = count; + return(0); +} + +/* Fill buf with len characters starting at i. */ +/* Assumes len characters are available in buf. */ +/* Return 1 if buf is filled fully (and len is */ +/* non-zero), 0 otherwise. */ +int CORD_fill_buf(CORD x, size_t i, size_t len, char * buf) +{ + CORD_fill_data fd; + + fd.len = len; + fd.buf = buf; + fd.count = 0; + return CORD_iter5(x, i, CORD_fill_proc, CORD_batched_fill_proc, &fd); +} + +int CORD_cmp(CORD x, CORD y) +{ + CORD_pos xpos; + CORD_pos ypos; + + if (y == CORD_EMPTY) return(x != CORD_EMPTY); + if (x == CORD_EMPTY) return(-1); + if (CORD_IS_STRING(y) && CORD_IS_STRING(x)) return(strcmp(x,y)); + CORD_set_pos(xpos, x, 0); + CORD_set_pos(ypos, y, 0); + for(;;) { + size_t avail, yavail; + + if (!CORD_pos_valid(xpos)) { + if (CORD_pos_valid(ypos)) { + return(-1); + } else { + return(0); + } + } + if (!CORD_pos_valid(ypos)) { + return(1); + } + avail = CORD_pos_chars_left(xpos); + if (avail == 0 + || (yavail = CORD_pos_chars_left(ypos)) == 0) { + register char xcurrent = CORD_pos_fetch(xpos); + register char ycurrent = CORD_pos_fetch(ypos); + if (xcurrent != ycurrent) return(xcurrent - ycurrent); + CORD_next(xpos); + CORD_next(ypos); + } else { + /* process as many characters as we can */ + register int result; + + if (avail > yavail) avail = yavail; + result = strncmp(CORD_pos_cur_char_addr(xpos), + CORD_pos_cur_char_addr(ypos), avail); + if (result != 0) return(result); + CORD_pos_advance(xpos, avail); + CORD_pos_advance(ypos, avail); + } + } +} + +int CORD_ncmp(CORD x, size_t x_start, CORD y, size_t y_start, size_t len) +{ + CORD_pos xpos; + CORD_pos ypos; + register size_t count; + + CORD_set_pos(xpos, x, x_start); + CORD_set_pos(ypos, y, y_start); + for(count = 0; count < len;) { + long avail, yavail; + + if (!CORD_pos_valid(xpos)) { + if (CORD_pos_valid(ypos)) { + return(-1); + } else { + return(0); + } + } + if (!CORD_pos_valid(ypos)) { + return(1); + } + if ((avail = CORD_pos_chars_left(xpos)) <= 0 + || (yavail = CORD_pos_chars_left(ypos)) <= 0) { + register char xcurrent = CORD_pos_fetch(xpos); + register char ycurrent = CORD_pos_fetch(ypos); + if (xcurrent != ycurrent) return(xcurrent - ycurrent); + CORD_next(xpos); + CORD_next(ypos); + count++; + } else { + /* process as many characters as we can */ + register int result; + + if (avail > yavail) avail = yavail; + count += avail; + if (count > len) + avail -= (long)(count - len); + result = strncmp(CORD_pos_cur_char_addr(xpos), + CORD_pos_cur_char_addr(ypos), (size_t)avail); + if (result != 0) return(result); + CORD_pos_advance(xpos, (size_t)avail); + CORD_pos_advance(ypos, (size_t)avail); + } + } + return(0); +} + +char * CORD_to_char_star(CORD x) +{ + register size_t len = CORD_len(x); + char * result = GC_MALLOC_ATOMIC(len + 1); + + if (result == 0) OUT_OF_MEMORY; + if (len > 0 && CORD_fill_buf(x, 0, len, result) != 1) + ABORT("CORD_fill_buf malfunction"); + result[len] = '\0'; + return(result); +} + +CORD CORD_from_char_star(const char *s) +{ + char * result; + size_t len = strlen(s); + + if (0 == len) return(CORD_EMPTY); + result = GC_MALLOC_ATOMIC(len + 1); + if (result == 0) OUT_OF_MEMORY; + memcpy(result, s, len+1); + return(result); +} + +const char * CORD_to_const_char_star(CORD x) +{ + if (x == 0) return(""); + if (CORD_IS_STRING(x)) return((const char *)x); + return(CORD_to_char_star(x)); +} + +char CORD_fetch(CORD x, size_t i) +{ + CORD_pos xpos; + + CORD_set_pos(xpos, x, i); + if (!CORD_pos_valid(xpos)) ABORT("bad index?"); + return(CORD_pos_fetch(xpos)); +} + + +int CORD_put_proc(char c, void * client_data) +{ + register FILE * f = (FILE *)client_data; + + return(putc(c, f) == EOF); +} + +int CORD_batched_put_proc(const char * s, void * client_data) +{ + register FILE * f = (FILE *)client_data; + + return(fputs(s, f) == EOF); +} + + +int CORD_put(CORD x, FILE * f) +{ + if (CORD_iter5(x, 0, CORD_put_proc, CORD_batched_put_proc, f)) { + return(EOF); + } else { + return(1); + } +} + +typedef struct { + size_t pos; /* Current position in the cord */ + char target; /* Character we're looking for */ +} chr_data; + +int CORD_chr_proc(char c, void * client_data) +{ + register chr_data * d = (chr_data *)client_data; + + if (c == d -> target) return(1); + (d -> pos) ++; + return(0); +} + +int CORD_rchr_proc(char c, void * client_data) +{ + register chr_data * d = (chr_data *)client_data; + + if (c == d -> target) return(1); + (d -> pos) --; + return(0); +} + +int CORD_batched_chr_proc(const char *s, void * client_data) +{ + register chr_data * d = (chr_data *)client_data; + register char * occ = strchr(s, d -> target); + + if (occ == 0) { + d -> pos += strlen(s); + return(0); + } else { + d -> pos += occ - s; + return(1); + } +} + +size_t CORD_chr(CORD x, size_t i, int c) +{ + chr_data d; + + d.pos = i; + d.target = (char)c; + if (CORD_iter5(x, i, CORD_chr_proc, CORD_batched_chr_proc, &d)) { + return(d.pos); + } else { + return(CORD_NOT_FOUND); + } +} + +size_t CORD_rchr(CORD x, size_t i, int c) +{ + chr_data d; + + d.pos = i; + d.target = (char)c; + if (CORD_riter4(x, i, CORD_rchr_proc, &d)) { + return(d.pos); + } else { + return(CORD_NOT_FOUND); + } +} + +/* Find the first occurrence of s in x at position start or later. */ +/* This uses an asymptotically poor algorithm, which should typically */ +/* perform acceptably. We compare the first few characters directly, */ +/* and call CORD_ncmp whenever there is a partial match. */ +/* This has the advantage that we allocate very little, or not at all. */ +/* It's very fast if there are few close misses. */ +size_t CORD_str(CORD x, size_t start, CORD s) +{ + CORD_pos xpos; + size_t xlen = CORD_len(x); + size_t slen; + register size_t start_len; + const char * s_start; + unsigned long s_buf = 0; /* The first few characters of s */ + unsigned long x_buf = 0; /* Start of candidate substring. */ + /* Initialized only to make compilers */ + /* happy. */ + unsigned long mask = 0; + register size_t i; + register size_t match_pos; + + if (s == CORD_EMPTY) return(start); + if (CORD_IS_STRING(s)) { + s_start = s; + slen = strlen(s); + } else { + s_start = CORD_to_char_star(CORD_substr(s, 0, sizeof(unsigned long))); + slen = CORD_len(s); + } + if (xlen < start || xlen - start < slen) return(CORD_NOT_FOUND); + start_len = slen; + if (start_len > sizeof(unsigned long)) start_len = sizeof(unsigned long); + CORD_set_pos(xpos, x, start); + for (i = 0; i < start_len; i++) { + mask <<= 8; + mask |= 0xff; + s_buf <<= 8; + s_buf |= (unsigned char)s_start[i]; + x_buf <<= 8; + x_buf |= (unsigned char)CORD_pos_fetch(xpos); + CORD_next(xpos); + } + for (match_pos = start; ; match_pos++) { + if ((x_buf & mask) == s_buf) { + if (slen == start_len || + CORD_ncmp(x, match_pos + start_len, + s, start_len, slen - start_len) == 0) { + return(match_pos); + } + } + if ( match_pos == xlen - slen ) { + return(CORD_NOT_FOUND); + } + x_buf <<= 8; + x_buf |= (unsigned char)CORD_pos_fetch(xpos); + CORD_next(xpos); + } +} + +void CORD_ec_flush_buf(CORD_ec x) +{ + register size_t len = x[0].ec_bufptr - x[0].ec_buf; + char * s; + + if (len == 0) return; + s = GC_MALLOC_ATOMIC(len+1); + if (NULL == s) OUT_OF_MEMORY; + memcpy(s, x[0].ec_buf, len); + s[len] = '\0'; + x[0].ec_cord = CORD_cat_char_star(x[0].ec_cord, s, len); + x[0].ec_bufptr = x[0].ec_buf; +} + +void CORD_ec_append_cord(CORD_ec x, CORD s) +{ + CORD_ec_flush_buf(x); + x[0].ec_cord = CORD_cat(x[0].ec_cord, s); +} + +char CORD_nul_func(size_t i CORD_ATTR_UNUSED, void * client_data) +{ + return (char)(GC_word)client_data; +} + +CORD CORD_chars(char c, size_t i) +{ + return CORD_from_fn(CORD_nul_func, (void *)(GC_word)(unsigned char)c, i); +} + +CORD CORD_from_file_eager(FILE * f) +{ + CORD_ec ecord; + + CORD_ec_init(ecord); + for(;;) { + int c = getc(f); + + if (c == 0) { + /* Append the right number of NULs */ + /* Note that any string of NULs is represented in 4 words, */ + /* independent of its length. */ + register size_t count = 1; + + CORD_ec_flush_buf(ecord); + while ((c = getc(f)) == 0) count++; + ecord[0].ec_cord = CORD_cat(ecord[0].ec_cord, CORD_nul(count)); + } + if (c == EOF) break; + CORD_ec_append(ecord, (char)c); + } + (void) fclose(f); + return(CORD_balance(CORD_ec_to_cord(ecord))); +} + +/* The state maintained for a lazily read file consists primarily */ +/* of a large direct-mapped cache of previously read values. */ +/* We could rely more on stdio buffering. That would have 2 */ +/* disadvantages: */ +/* 1) Empirically, not all fseek implementations preserve the */ +/* buffer whenever they could. */ +/* 2) It would fail if 2 different sections of a long cord */ +/* were being read alternately. */ +/* We do use the stdio buffer for read ahead. */ +/* To guarantee thread safety in the presence of atomic pointer */ +/* writes, cache lines are always replaced, and never modified in */ +/* place. */ + +# define LOG_CACHE_SZ 14 +# define CACHE_SZ (1 << LOG_CACHE_SZ) +# define LOG_LINE_SZ 9 +# define LINE_SZ (1 << LOG_LINE_SZ) + +typedef struct { + size_t tag; + char data[LINE_SZ]; + /* data[i%LINE_SZ] = ith char in file if tag = i/LINE_SZ */ +} cache_line; + +typedef struct { + FILE * lf_file; + size_t lf_current; /* Current file pointer value */ + cache_line * volatile lf_cache[CACHE_SZ/LINE_SZ]; +} lf_state; + +# define MOD_CACHE_SZ(n) ((n) & (CACHE_SZ - 1)) +# define DIV_CACHE_SZ(n) ((n) >> LOG_CACHE_SZ) +# define MOD_LINE_SZ(n) ((n) & (LINE_SZ - 1)) +# define DIV_LINE_SZ(n) ((n) >> LOG_LINE_SZ) +# define LINE_START(n) ((n) & ~(LINE_SZ - 1)) + +typedef struct { + lf_state * state; + size_t file_pos; /* Position of needed character. */ + cache_line * new_cache; +} refill_data; + +/* Executed with allocation lock. */ +static char refill_cache(refill_data * client_data) +{ + register lf_state * state = client_data -> state; + register size_t file_pos = client_data -> file_pos; + FILE *f = state -> lf_file; + size_t line_start = LINE_START(file_pos); + size_t line_no = DIV_LINE_SZ(MOD_CACHE_SZ(file_pos)); + cache_line * new_cache = client_data -> new_cache; + + if (line_start != state -> lf_current + && fseek(f, (long)line_start, SEEK_SET) != 0) { + ABORT("fseek failed"); + } + if (fread(new_cache -> data, sizeof(char), LINE_SZ, f) + <= file_pos - line_start) { + ABORT("fread failed"); + } + new_cache -> tag = DIV_LINE_SZ(file_pos); + /* Store barrier goes here. */ + ATOMIC_WRITE(state -> lf_cache[line_no], new_cache); + state -> lf_current = line_start + LINE_SZ; + return(new_cache->data[MOD_LINE_SZ(file_pos)]); +} + +char CORD_lf_func(size_t i, void * client_data) +{ + register lf_state * state = (lf_state *)client_data; + register cache_line * volatile * cl_addr = + &(state -> lf_cache[DIV_LINE_SZ(MOD_CACHE_SZ(i))]); + register cache_line * cl = (cache_line *)ATOMIC_READ(cl_addr); + + if (cl == 0 || cl -> tag != DIV_LINE_SZ(i)) { + /* Cache miss */ + refill_data rd; + + rd.state = state; + rd.file_pos = i; + rd.new_cache = GC_NEW_ATOMIC(cache_line); + if (rd.new_cache == 0) OUT_OF_MEMORY; + return((char)(GC_word) + GC_call_with_alloc_lock((GC_fn_type) refill_cache, &rd)); + } + return(cl -> data[MOD_LINE_SZ(i)]); +} + +void CORD_lf_close_proc(void * obj, void * client_data CORD_ATTR_UNUSED) +{ + if (fclose(((lf_state *)obj) -> lf_file) != 0) { + ABORT("CORD_lf_close_proc: fclose failed"); + } +} + +CORD CORD_from_file_lazy_inner(FILE * f, size_t len) +{ + register lf_state * state = GC_NEW(lf_state); + register int i; + + if (state == 0) OUT_OF_MEMORY; + if (len != 0) { + /* Dummy read to force buffer allocation. */ + /* This greatly increases the probability */ + /* of avoiding deadlock if buffer allocation */ + /* is redirected to GC_malloc and the */ + /* world is multi-threaded. */ + char buf[1]; + + if (fread(buf, 1, 1, f) > 1 + || fseek(f, 0l, SEEK_SET) != 0) { + ABORT("Bad f argument or I/O failure"); + } + } + state -> lf_file = f; + for (i = 0; i < CACHE_SZ/LINE_SZ; i++) { + state -> lf_cache[i] = 0; + } + state -> lf_current = 0; + GC_REGISTER_FINALIZER(state, CORD_lf_close_proc, 0, 0, 0); + return(CORD_from_fn(CORD_lf_func, state, len)); +} + +CORD CORD_from_file_lazy(FILE * f) +{ + register long len; + + if (fseek(f, 0l, SEEK_END) != 0 + || (len = ftell(f)) < 0 + || fseek(f, 0l, SEEK_SET) != 0) { + ABORT("Bad f argument or I/O failure"); + } + return(CORD_from_file_lazy_inner(f, (size_t)len)); +} + +# define LAZY_THRESHOLD (128*1024 + 1) + +CORD CORD_from_file(FILE * f) +{ + register long len; + + if (fseek(f, 0l, SEEK_END) != 0 + || (len = ftell(f)) < 0 + || fseek(f, 0l, SEEK_SET) != 0) { + ABORT("Bad f argument or I/O failure"); + } + if (len < LAZY_THRESHOLD) { + return(CORD_from_file_eager(f)); + } else { + return(CORD_from_file_lazy_inner(f, (size_t)len)); + } +} diff --git a/cord/tests/cordtest.c b/cord/tests/cordtest.c new file mode 100644 index 0000000..e05e6a5 --- /dev/null +++ b/cord/tests/cordtest.c @@ -0,0 +1,316 @@ +/* + * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +# include "gc.h" /* For GC_INIT() only */ +# include "cord.h" + +# include +# include +# include +# include + +/* This is a very incomplete test of the cord package. It knows about */ +/* a few internals of the package (e.g. when C strings are returned) */ +/* that real clients shouldn't rely on. */ + +# define ABORT(string) \ + { fprintf(stderr, "FAILED: %s\n", string); abort(); } + +#if defined(CPPCHECK) +# undef CORD_iter +# undef CORD_next +# undef CORD_pos_fetch +# undef CORD_pos_to_cord +# undef CORD_pos_to_index +# undef CORD_pos_valid +# undef CORD_prev +#endif + +int count; + +int test_fn(char c, void * client_data) +{ + if (client_data != (void *)13) ABORT("bad client data"); + if (count < 64*1024+1) { + if ((count & 1) == 0) { + if (c != 'b') ABORT("bad char"); + } else { + if (c != 'a') ABORT("bad char"); + } + count++; + return(0); + } else { + if (c != 'c') ABORT("bad char"); + count++; + return(1); + } +} + +char id_cord_fn(size_t i, void * client_data) +{ + if (client_data != 0) ABORT("id_cord_fn: bad client data"); + return((char)i); +} + +void test_basics(void) +{ + CORD x = CORD_from_char_star("ab"); + register int i; + CORD y; + CORD_pos p; + + x = CORD_cat(x,x); + if (x == CORD_EMPTY) ABORT("CORD_cat(x,x) returned empty cord"); + if (!CORD_IS_STRING(x)) ABORT("short cord should usually be a string"); + if (strcmp(x, "abab") != 0) ABORT("bad CORD_cat result"); + + for (i = 1; i < 16; i++) { + x = CORD_cat(x,x); + } + x = CORD_cat(x,"c"); + if (CORD_len(x) != 128*1024+1) ABORT("bad length"); + + count = 0; + if (CORD_iter5(x, 64*1024-1, test_fn, CORD_NO_FN, (void *)13) == 0) { + ABORT("CORD_iter5 failed"); + } + if (count != 64*1024 + 2) ABORT("CORD_iter5 failed"); + + count = 0; + CORD_set_pos(p, x, 64*1024-1); + while(CORD_pos_valid(p)) { + (void) test_fn(CORD_pos_fetch(p), (void *)13); + CORD_next(p); + } + if (count != 64*1024 + 2) ABORT("Position based iteration failed"); + + y = CORD_substr(x, 1023, 5); + if (!y) ABORT("CORD_substr returned NULL"); + if (!CORD_IS_STRING(y)) ABORT("short cord should usually be a string"); + if (strcmp(y, "babab") != 0) ABORT("bad CORD_substr result"); + + y = CORD_substr(x, 1024, 8); + if (!y) ABORT("CORD_substr returned NULL"); + if (!CORD_IS_STRING(y)) ABORT("short cord should usually be a string"); + if (strcmp(y, "abababab") != 0) ABORT("bad CORD_substr result"); + + y = CORD_substr(x, 128*1024-1, 8); + if (!y) ABORT("CORD_substr returned NULL"); + if (!CORD_IS_STRING(y)) ABORT("short cord should usually be a string"); + if (strcmp(y, "bc") != 0) ABORT("bad CORD_substr result"); + + x = CORD_balance(x); + if (CORD_len(x) != 128*1024+1) ABORT("bad length"); + + count = 0; + if (CORD_iter5(x, 64*1024-1, test_fn, CORD_NO_FN, (void *)13) == 0) { + ABORT("CORD_iter5 failed"); + } + if (count != 64*1024 + 2) ABORT("CORD_iter5 failed"); + + y = CORD_substr(x, 1023, 5); + if (!y) ABORT("CORD_substr returned NULL"); + if (!CORD_IS_STRING(y)) ABORT("short cord should usually be a string"); + if (strcmp(y, "babab") != 0) ABORT("bad CORD_substr result"); + y = CORD_from_fn(id_cord_fn, 0, 13); + i = 0; + CORD_set_pos(p, y, i); + while(CORD_pos_valid(p)) { + char c = CORD_pos_fetch(p); + + if(c != i) ABORT("Traversal of function node failed"); + CORD_next(p); + i++; + } + if (i != 13) ABORT("Bad apparent length for function node"); +# if defined(CPPCHECK) + /* TODO: Actually test these functions. */ + CORD_prev(p); + (void)CORD_pos_to_cord(p); + (void)CORD_pos_to_index(p); + (void)CORD_iter(CORD_EMPTY, test_fn, NULL); + (void)CORD_riter(CORD_EMPTY, test_fn, NULL); + CORD_dump(y); +# endif +} + +void test_extras(void) +{ +# define FNAME1 "cordtst1.tmp" /* short name (8+3) for portability */ +# define FNAME2 "cordtst2.tmp" + register int i; + CORD y = "abcdefghijklmnopqrstuvwxyz0123456789"; + CORD x = "{}"; + CORD u, w, z; + FILE *f; + FILE *f1a, *f1b, *f2; + + w = CORD_cat(CORD_cat(y,y),y); + z = CORD_catn(3,y,y,y); + if (CORD_cmp(w,z) != 0) ABORT("CORD_catn comparison wrong"); + for (i = 1; i < 100; i++) { + x = CORD_cat(x, y); + } + z = CORD_balance(x); + if (CORD_cmp(x,z) != 0) ABORT("balanced string comparison wrong"); + if (CORD_cmp(x,CORD_cat(z, CORD_nul(13))) >= 0) ABORT("comparison 2"); + if (CORD_cmp(CORD_cat(x, CORD_nul(13)), z) <= 0) ABORT("comparison 3"); + if (CORD_cmp(x,CORD_cat(z, "13")) >= 0) ABORT("comparison 4"); + if ((f = fopen(FNAME1, "w")) == 0) ABORT("open failed"); + if (CORD_put(z,f) == EOF) ABORT("CORD_put failed"); + if (fclose(f) == EOF) ABORT("fclose failed"); + f1a = fopen(FNAME1, "rb"); + if (!f1a) ABORT("Unable to open " FNAME1); + w = CORD_from_file(f1a); + if (CORD_len(w) != CORD_len(z)) ABORT("file length wrong"); + if (CORD_cmp(w,z) != 0) ABORT("file comparison wrong"); + if (CORD_cmp(CORD_substr(w, 50*36+2, 36), y) != 0) + ABORT("file substr wrong"); + f1b = fopen(FNAME1, "rb"); + if (!f1b) ABORT("2nd open failed: " FNAME1); + z = CORD_from_file_lazy(f1b); + if (CORD_cmp(w,z) != 0) ABORT("File conversions differ"); + if (CORD_chr(w, 0, '9') != 37) ABORT("CORD_chr failed 1"); + if (CORD_chr(w, 3, 'a') != 38) ABORT("CORD_chr failed 2"); + if (CORD_rchr(w, CORD_len(w) - 1, '}') != 1) ABORT("CORD_rchr failed"); + x = y; + for (i = 1; i < 14; i++) { + x = CORD_cat(x,x); + } + if ((f = fopen(FNAME2, "w")) == 0) ABORT("2nd open failed"); +# ifdef __DJGPP__ + /* FIXME: DJGPP workaround. Why does this help? */ + if (fflush(f) != 0) ABORT("fflush failed"); +# endif + if (CORD_put(x,f) == EOF) ABORT("CORD_put failed"); + if (fclose(f) == EOF) ABORT("fclose failed"); + f2 = fopen(FNAME2, "rb"); + if (!f2) ABORT("Unable to open " FNAME2); + w = CORD_from_file(f2); + if (CORD_len(w) != CORD_len(x)) ABORT("file length wrong"); + if (CORD_cmp(w,x) != 0) ABORT("file comparison wrong"); + if (CORD_cmp(CORD_substr(w, 1000*36, 36), y) != 0) + ABORT("file substr wrong"); + if (strcmp(CORD_to_char_star(CORD_substr(w, 1000*36, 36)), y) != 0) + ABORT("char * file substr wrong"); + u = CORD_substr(w, 1000*36, 2); + if (!u) ABORT("CORD_substr returned NULL"); + if (strcmp(u, "ab") != 0) + ABORT("short file substr wrong"); + if (CORD_str(x,1,"9a") != 35) ABORT("CORD_str failed 1"); + if (CORD_str(x,0,"9abcdefghijk") != 35) ABORT("CORD_str failed 2"); + if (CORD_str(x,0,"9abcdefghijx") != CORD_NOT_FOUND) + ABORT("CORD_str failed 3"); + if (CORD_str(x,0,"9>") != CORD_NOT_FOUND) ABORT("CORD_str failed 4"); + /* Note: f1a, f1b, f2 handles are closed lazily by CORD library. */ + /* TODO: Propose and use CORD_fclose. */ + *(CORD volatile *)&w = CORD_EMPTY; + *(CORD volatile *)&z = CORD_EMPTY; + GC_gcollect(); + GC_invoke_finalizers(); + /* Of course, this does not guarantee the files are closed. */ + if (remove(FNAME1) != 0) { + /* On some systems, e.g. OS2, this may fail if f1 is still open. */ + /* But we cannot call fclose as it might lead to double close. */ + fprintf(stderr, "WARNING: remove failed: " FNAME1 "\n"); + } + if (remove(FNAME2) != 0) { + fprintf(stderr, "WARNING: remove failed: " FNAME2 "\n"); + } +} + +int wrap_vprintf(CORD format, ...) +{ + va_list args; + int result; + + va_start(args, format); + result = CORD_vprintf(format, args); + va_end(args); + return result; +} + +int wrap_vfprintf(FILE * f, CORD format, ...) +{ + va_list args; + int result; + + va_start(args, format); + result = CORD_vfprintf(f, format, args); + va_end(args); + return result; +} + +#if defined(__DJGPP__) || defined(__STRICT_ANSI__) + /* snprintf is missing in DJGPP (v2.0.3) */ +#else +# if defined(_MSC_VER) +# if defined(_WIN32_WCE) + /* _snprintf is deprecated in WinCE */ +# define GC_SNPRINTF StringCchPrintfA +# else +# define GC_SNPRINTF _snprintf +# endif +# else +# define GC_SNPRINTF snprintf +# endif +#endif + +void test_printf(void) +{ + CORD result; + char result2[200]; + long l = -1; + short s = (short)-1; + CORD x; + + if (CORD_sprintf(&result, "%7.2f%ln", 3.14159F, &l) != 7) + ABORT("CORD_sprintf failed 1"); + if (CORD_cmp(result, " 3.14") != 0)ABORT("CORD_sprintf goofed 1"); + if (l != 7) ABORT("CORD_sprintf goofed 2"); + if (CORD_sprintf(&result, "%-7.2s%hn%c%s", "abcd", &s, 'x', "yz") != 10) + ABORT("CORD_sprintf failed 2"); + if (CORD_cmp(result, "ab xyz") != 0)ABORT("CORD_sprintf goofed 3"); + if (s != 7) ABORT("CORD_sprintf goofed 4"); + x = "abcdefghij"; + x = CORD_cat(x,x); + x = CORD_cat(x,x); + x = CORD_cat(x,x); + if (CORD_sprintf(&result, "->%-120.78r!\n", x) != 124) + ABORT("CORD_sprintf failed 3"); +# ifdef GC_SNPRINTF + (void)GC_SNPRINTF(result2, sizeof(result2), "->%-120.78s!\n", + CORD_to_char_star(x)); +# else + (void)sprintf(result2, "->%-120.78s!\n", CORD_to_char_star(x)); +# endif + result2[sizeof(result2) - 1] = '\0'; + if (CORD_cmp(result, result2) != 0)ABORT("CORD_sprintf goofed 5"); + /* TODO: Better test CORD_[v][f]printf. */ + (void)CORD_printf(CORD_EMPTY); + (void)wrap_vfprintf(stdout, CORD_EMPTY); + (void)wrap_vprintf(CORD_EMPTY); +} + +int main(void) +{ +# ifdef THINK_C + printf("cordtest:\n"); +# endif + GC_INIT(); + test_basics(); + test_extras(); + test_printf(); + CORD_fprintf(stdout, "SUCCEEDED\n"); + return(0); +} diff --git a/cord/tests/de.c b/cord/tests/de.c new file mode 100644 index 0000000..1c00270 --- /dev/null +++ b/cord/tests/de.c @@ -0,0 +1,615 @@ +/* + * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* + * A really simple-minded text editor based on cords. + * Things it does right: + * No size bounds. + * Inbounded undo. + * Shouldn't crash no matter what file you invoke it on (e.g. /vmunix) + * (Make sure /vmunix is not writable before you try this.) + * Scrolls horizontally. + * Things it does wrong: + * It doesn't handle tabs reasonably (use "expand" first). + * The command set is MUCH too small. + * The redisplay algorithm doesn't let curses do the scrolling. + * The rule for moving the window over the file is suboptimal. + */ + +#include +#include /* for exit() */ + +#include "gc.h" +#include "cord.h" + +#ifdef THINK_C +#define MACINTOSH +#endif +#include + +#if (defined(__BORLANDC__) || defined(__CYGWIN__)) && !defined(WIN32) + /* If this is DOS or win16, we'll fail anyway. */ + /* Might as well assume win32. */ +# define WIN32 +#endif + +#if defined(WIN32) +# include +# include "de_win.h" +#elif defined(MACINTOSH) +# include +/* curses emulation. */ +# define initscr() +# define endwin() +# define nonl() +# define noecho() csetmode(C_NOECHO, stdout) +# define cbreak() csetmode(C_CBREAK, stdout) +# define refresh() +# define addch(c) putchar(c) +# define standout() cinverse(1, stdout) +# define standend() cinverse(0, stdout) +# define move(line,col) cgotoxy(col + 1, line + 1, stdout) +# define clrtoeol() ccleol(stdout) +# define de_error(s) { fprintf(stderr, s); getchar(); } +# define LINES 25 +# define COLS 80 +#else +# include +# include /* for sleep() */ +# define de_error(s) { fprintf(stderr, s); sleep(2); } +#endif +#include "de_cmds.h" + +#define OUT_OF_MEMORY do { \ + fprintf(stderr, "Out of memory\n"); \ + exit(3); \ + } while (0) + +/* List of line number to position mappings, in descending order. */ +/* There may be holes. */ +typedef struct LineMapRep { + int line; + size_t pos; + struct LineMapRep * previous; +} * line_map; + +/* List of file versions, one per edit operation */ +typedef struct HistoryRep { + CORD file_contents; + struct HistoryRep * previous; + line_map map; /* Invalid for first record "now" */ +} * history; + +history now = 0; +CORD current; /* == now -> file_contents. */ +size_t current_len; /* Current file length. */ +line_map current_map = 0; /* Current line no. to pos. map */ +size_t current_map_size = 0; /* Number of current_map entries. */ + /* Not always accurate, but reset */ + /* by prune_map. */ +# define MAX_MAP_SIZE 3000 + +/* Current display position */ +int dis_line = 0; +int dis_col = 0; + +# define ALL -1 +# define NONE - 2 +int need_redisplay = 0; /* Line that needs to be redisplayed. */ + + +/* Current cursor position. Always within file. */ +int line = 0; +int col = 0; +size_t file_pos = 0; /* Character position corresponding to cursor. */ + +/* Invalidate line map for lines > i */ +void invalidate_map(int i) +{ + while(current_map -> line > i) { + current_map = current_map -> previous; + current_map_size--; + } +} + +/* Reduce the number of map entries to save space for huge files. */ +/* This also affects maps in histories. */ +void prune_map(void) +{ + line_map map = current_map; + int start_line = map -> line; + + current_map_size = 0; + do { + current_map_size++; + if (map -> line < start_line - LINES && map -> previous != 0) { + map -> previous = map -> previous -> previous; + } + map = map -> previous; + } while (map != 0); +} + +/* Add mapping entry */ +void add_map(int line, size_t pos) +{ + line_map new_map = GC_NEW(struct LineMapRep); + + if (NULL == new_map) OUT_OF_MEMORY; + if (current_map_size >= MAX_MAP_SIZE) prune_map(); + new_map -> line = line; + new_map -> pos = pos; + new_map -> previous = current_map; + current_map = new_map; + current_map_size++; +} + + + +/* Return position of column *c of ith line in */ +/* current file. Adjust *c to be within the line.*/ +/* A 0 pointer is taken as 0 column. */ +/* Returns CORD_NOT_FOUND if i is too big. */ +/* Assumes i > dis_line. */ +size_t line_pos(int i, int *c) +{ + int j; + size_t cur; + line_map map = current_map; + + while (map -> line > i) map = map -> previous; + if (map -> line < i - 2) /* rebuild */ invalidate_map(i); + for (j = map -> line, cur = map -> pos; j < i;) { + cur = CORD_chr(current, cur, '\n'); + if (cur == current_len-1) return(CORD_NOT_FOUND); + cur++; + if (++j > current_map -> line) add_map(j, cur); + } + if (c != 0) { + size_t next = CORD_chr(current, cur, '\n'); + + if (next == CORD_NOT_FOUND) next = current_len - 1; + if (next < cur + *c) { + *c = (int)(next - cur); + } + cur += *c; + } + return(cur); +} + +void add_hist(CORD s) +{ + history new_file = GC_NEW(struct HistoryRep); + + if (NULL == new_file) OUT_OF_MEMORY; + new_file -> file_contents = current = s; + current_len = CORD_len(s); + new_file -> previous = now; + if (now != 0) now -> map = current_map; + now = new_file; +} + +void del_hist(void) +{ + now = now -> previous; + current = now -> file_contents; + current_map = now -> map; + current_len = CORD_len(current); +} + +/* Current screen_contents; a dynamically allocated array of CORDs */ +CORD * screen = 0; +int screen_size = 0; + +# ifndef WIN32 +/* Replace a line in the curses stdscr. All control characters are */ +/* displayed as upper case characters in standout mode. This isn't */ +/* terribly appropriate for tabs. */ +void replace_line(int i, CORD s) +{ + CORD_pos p; +# if !defined(MACINTOSH) + size_t len = CORD_len(s); +# endif + + if (screen == 0 || LINES > screen_size) { + screen_size = LINES; + screen = (CORD *)GC_MALLOC(screen_size * sizeof(CORD)); + if (NULL == screen) OUT_OF_MEMORY; + } +# if !defined(MACINTOSH) + /* A gross workaround for an apparent curses bug: */ + if (i == LINES-1 && len == (unsigned)COLS) { + s = CORD_substr(s, 0, len - 1); + } +# endif + if (CORD_cmp(screen[i], s) != 0) { + move(i, 0); clrtoeol(); move(i,0); + + CORD_FOR (p, s) { + int c = CORD_pos_fetch(p) & 0x7f; + + if (iscntrl(c)) { + standout(); addch(c + 0x40); standend(); + } else { + addch(c); + } + } + screen[i] = s; + } +} +#else +# define replace_line(i,s) invalidate_line(i) +#endif + +/* Return up to COLS characters of the line of s starting at pos, */ +/* returning only characters after the given column. */ +CORD retrieve_line(CORD s, size_t pos, unsigned column) +{ + CORD candidate = CORD_substr(s, pos, column + COLS); + /* avoids scanning very long lines */ + size_t eol = CORD_chr(candidate, 0, '\n'); + int len; + + if (eol == CORD_NOT_FOUND) eol = CORD_len(candidate); + len = (int)eol - (int)column; + if (len < 0) len = 0; + return(CORD_substr(s, pos + column, len)); +} + +# ifdef WIN32 +# define refresh(); + + CORD retrieve_screen_line(int i) + { + register size_t pos; + + invalidate_map(dis_line + LINES); /* Prune search */ + pos = line_pos(dis_line + i, 0); + if (pos == CORD_NOT_FOUND) return(CORD_EMPTY); + return(retrieve_line(current, pos, dis_col)); + } +# endif + +/* Display the visible section of the current file */ +void redisplay(void) +{ + register int i; + + invalidate_map(dis_line + LINES); /* Prune search */ + for (i = 0; i < LINES; i++) { + if (need_redisplay == ALL || need_redisplay == i) { + register size_t pos = line_pos(dis_line + i, 0); + + if (pos == CORD_NOT_FOUND) break; + replace_line(i, retrieve_line(current, pos, dis_col)); + if (need_redisplay == i) goto done; + } + } + for (; i < LINES; i++) replace_line(i, CORD_EMPTY); +done: + refresh(); + need_redisplay = NONE; +} + +int dis_granularity; + +/* Update dis_line, dis_col, and dis_pos to make cursor visible. */ +/* Assumes line, col, dis_line, dis_pos are in bounds. */ +void normalize_display(void) +{ + int old_line = dis_line; + int old_col = dis_col; + + dis_granularity = 1; + if (LINES > 15 && COLS > 15) dis_granularity = 2; + while (dis_line > line) dis_line -= dis_granularity; + while (dis_col > col) dis_col -= dis_granularity; + while (line >= dis_line + LINES) dis_line += dis_granularity; + while (col >= dis_col + COLS) dis_col += dis_granularity; + if (old_line != dis_line || old_col != dis_col) { + need_redisplay = ALL; + } +} + +# if defined(WIN32) +# elif defined(MACINTOSH) +# define move_cursor(x,y) cgotoxy(x + 1, y + 1, stdout) +# else +# define move_cursor(x,y) move(y,x) +# endif + +/* Adjust display so that cursor is visible; move cursor into position */ +/* Update screen if necessary. */ +void fix_cursor(void) +{ + normalize_display(); + if (need_redisplay != NONE) redisplay(); + move_cursor(col - dis_col, line - dis_line); + refresh(); +# ifndef WIN32 + fflush(stdout); +# endif +} + +/* Make sure line, col, and dis_pos are somewhere inside file. */ +/* Recompute file_pos. Assumes dis_pos is accurate or past eof */ +void fix_pos(void) +{ + int my_col = col; + + if ((size_t)line > current_len) + line = (int)current_len; + file_pos = line_pos(line, &my_col); + if (file_pos == CORD_NOT_FOUND) { + for (line = current_map -> line, file_pos = current_map -> pos; + file_pos < current_len; + line++, file_pos = CORD_chr(current, file_pos, '\n') + 1); + line--; + file_pos = line_pos(line, &col); + } else { + col = my_col; + } +} + +#if defined(WIN32) +# define beep() Beep(1000 /* Hz */, 300 /* msecs */) +#elif defined(MACINTOSH) +# define beep() SysBeep(1) +#else +/* + * beep() is part of some curses packages and not others. + * We try to match the type of the builtin one, if any. + */ + int beep(void) + { + putc('\007', stderr); + return(0); + } +#endif /* !WIN32 && !MACINTOSH */ + +# define NO_PREFIX -1 +# define BARE_PREFIX -2 +int repeat_count = NO_PREFIX; /* Current command prefix. */ + +int locate_mode = 0; /* Currently between 2 ^Ls */ +CORD locate_string = CORD_EMPTY; /* Current search string. */ + +char * arg_file_name; + +#ifdef WIN32 +/* Change the current position to whatever is currently displayed at */ +/* the given SCREEN coordinates. */ +void set_position(int c, int l) +{ + line = l + dis_line; + col = c + dis_col; + fix_pos(); + move_cursor(col - dis_col, line - dis_line); +} +#endif /* WIN32 */ + +/* Perform the command associated with character c. C may be an */ +/* integer > 256 denoting a windows command, one of the above control */ +/* characters, or another ASCII character to be used as either a */ +/* character to be inserted, a repeat count, or a search string, */ +/* depending on the current state. */ +void do_command(int c) +{ + int i; + int need_fix_pos; + FILE * out; + + if ( c == '\r') c = '\n'; + if (locate_mode) { + size_t new_pos; + + if (c == LOCATE) { + locate_mode = 0; + locate_string = CORD_EMPTY; + return; + } + locate_string = CORD_cat_char(locate_string, (char)c); + new_pos = CORD_str(current, file_pos - CORD_len(locate_string) + 1, + locate_string); + if (new_pos != CORD_NOT_FOUND) { + need_redisplay = ALL; + new_pos += CORD_len(locate_string); + for (;;) { + file_pos = line_pos(line + 1, 0); + if (file_pos > new_pos) break; + line++; + } + col = (int)(new_pos - line_pos(line, 0)); + file_pos = new_pos; + fix_cursor(); + } else { + locate_string = CORD_substr(locate_string, 0, + CORD_len(locate_string) - 1); + beep(); + } + return; + } + if (c == REPEAT) { + repeat_count = BARE_PREFIX; return; + } else if (c < 0x100 && isdigit(c)){ + if (repeat_count == BARE_PREFIX) { + repeat_count = c - '0'; return; + } else if (repeat_count != NO_PREFIX) { + repeat_count = 10 * repeat_count + c - '0'; return; + } + } + if (repeat_count == NO_PREFIX) repeat_count = 1; + if (repeat_count == BARE_PREFIX && (c == UP || c == DOWN)) { + repeat_count = LINES - dis_granularity; + } + if (repeat_count == BARE_PREFIX) repeat_count = 8; + need_fix_pos = 0; + for (i = 0; i < repeat_count; i++) { + switch(c) { + case LOCATE: + locate_mode = 1; + break; + case TOP: + line = col = 0; + file_pos = 0; + break; + case UP: + if (line != 0) { + line--; + need_fix_pos = 1; + } + break; + case DOWN: + line++; + need_fix_pos = 1; + break; + case LEFT: + if (col != 0) { + col--; file_pos--; + } + break; + case RIGHT: + if (CORD_fetch(current, file_pos) == '\n') break; + col++; file_pos++; + break; + case UNDO: + del_hist(); + need_redisplay = ALL; need_fix_pos = 1; + break; + case BS: + if (col == 0) { + beep(); + break; + } + col--; file_pos--; + /* FALLTHRU */ + case DEL: + if (file_pos == current_len-1) break; + /* Can't delete trailing newline */ + if (CORD_fetch(current, file_pos) == '\n') { + need_redisplay = ALL; need_fix_pos = 1; + } else { + need_redisplay = line - dis_line; + } + add_hist(CORD_cat( + CORD_substr(current, 0, file_pos), + CORD_substr(current, file_pos+1, current_len))); + invalidate_map(line); + break; + case WRITE: + { + CORD name = CORD_cat(CORD_from_char_star(arg_file_name), + ".new"); + + if ((out = fopen(CORD_to_const_char_star(name), "wb")) == NULL + || CORD_put(current, out) == EOF) { + de_error("Write failed\n"); + need_redisplay = ALL; + } else { + fclose(out); + } + } + break; + default: + { + CORD left_part = CORD_substr(current, 0, file_pos); + CORD right_part = CORD_substr(current, file_pos, current_len); + + add_hist(CORD_cat(CORD_cat_char(left_part, (char)c), + right_part)); + invalidate_map(line); + if (c == '\n') { + col = 0; line++; file_pos++; + need_redisplay = ALL; + } else { + col++; file_pos++; + need_redisplay = line - dis_line; + } + break; + } + } + } + if (need_fix_pos) fix_pos(); + fix_cursor(); + repeat_count = NO_PREFIX; +} + +/* OS independent initialization */ + +void generic_init(void) +{ + FILE * f; + CORD initial; + + if ((f = fopen(arg_file_name, "rb")) == NULL) { + initial = "\n"; + } else { + size_t len; + + initial = CORD_from_file(f); + len = CORD_len(initial); + if (0 == len || CORD_fetch(initial, len - 1) != '\n') { + initial = CORD_cat(initial, "\n"); + } + } + add_map(0,0); + add_hist(initial); + now -> map = current_map; + now -> previous = now; /* Can't back up further: beginning of the world */ + need_redisplay = ALL; + fix_cursor(); +} + +#ifndef WIN32 + +int main(int argc, char **argv) +{ + int c; + void *buf; + +# if defined(MACINTOSH) + console_options.title = "\pDumb Editor"; + cshow(stdout); + argc = ccommand(&argv); +# endif + GC_INIT(); + + if (argc != 2) { + fprintf(stderr, "Usage: %s file\n", argv[0]); + fprintf(stderr, "Cursor keys: ^B(left) ^F(right) ^P(up) ^N(down)\n"); + fprintf(stderr, "Undo: ^U Write to .new: ^W"); + fprintf(stderr, "Quit:^D Repeat count: ^R[n]\n"); + fprintf(stderr, "Top: ^T Locate (search, find): ^L text ^L\n"); + exit(1); + } + arg_file_name = argv[1]; + buf = GC_MALLOC_ATOMIC(8192); + if (NULL == buf) OUT_OF_MEMORY; + setvbuf(stdout, buf, _IOFBF, 8192); + initscr(); + noecho(); nonl(); cbreak(); + generic_init(); + while ((c = getchar()) != QUIT) { + if (c == EOF) break; + do_command(c); + } + move(LINES-1, 0); + clrtoeol(); + refresh(); + nl(); + echo(); + endwin(); + return 0; +} + +#endif /* !WIN32 */ diff --git a/cord/tests/de_cmds.h b/cord/tests/de_cmds.h new file mode 100644 index 0000000..2a69594 --- /dev/null +++ b/cord/tests/de_cmds.h @@ -0,0 +1,31 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef DE_CMDS_H + +# define DE_CMDS_H + +# define UP 16 /* ^P */ +# define DOWN 14 /* ^N */ +# define LEFT 2 /* ^B */ +# define RIGHT 6 /* ^F */ +# define DEL 127 /* ^? */ +# define BS 8 /* ^H */ +# define UNDO 21 /* ^U */ +# define WRITE 23 /* ^W */ +# define QUIT 4 /* ^D */ +# define REPEAT 18 /* ^R */ +# define LOCATE 12 /* ^L */ +# define TOP 20 /* ^T */ + +#endif diff --git a/cord/tests/de_win.c b/cord/tests/de_win.c new file mode 100644 index 0000000..64ab804 --- /dev/null +++ b/cord/tests/de_win.c @@ -0,0 +1,368 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* + * The MS Windows specific part of de. + * This started as the generic Windows application template + * but significant parts didn't survive to the final version. + * + * This was written by a nonexpert windows programmer. + */ + +#include "windows.h" +#include "gc.h" +#include "cord.h" +#include "de_cmds.h" +#include "de_win.h" + +int LINES = 0; +int COLS = 0; + +#define szAppName TEXT("DE") + +HWND hwnd; + +void de_error(char *s) +{ + (void)MessageBoxA(hwnd, s, "Demonstration Editor", + MB_ICONINFORMATION | MB_OK); + InvalidateRect(hwnd, NULL, TRUE); +} + +int APIENTRY WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, + LPSTR command_line, int nCmdShow) +{ + MSG msg; + WNDCLASS wndclass; + HANDLE hAccel; + + GC_INIT(); +# if defined(CPPCHECK) + GC_noop1((GC_word)&WinMain); +# endif + + if (!hPrevInstance) + { + wndclass.style = CS_HREDRAW | CS_VREDRAW; + wndclass.lpfnWndProc = WndProc; + wndclass.cbClsExtra = 0; + wndclass.cbWndExtra = DLGWINDOWEXTRA; + wndclass.hInstance = hInstance; + wndclass.hIcon = LoadIcon (hInstance, szAppName); + wndclass.hCursor = LoadCursor (NULL, IDC_ARROW); + wndclass.hbrBackground = GetStockObject(WHITE_BRUSH); + wndclass.lpszMenuName = TEXT("DE"); + wndclass.lpszClassName = szAppName; + + if (RegisterClass (&wndclass) == 0) { + de_error("RegisterClass error"); + return(0); + } + } + + /* Empirically, the command line does not include the command name ... + if (command_line != 0) { + while (isspace(*command_line)) command_line++; + while (*command_line != 0 && !isspace(*command_line)) command_line++; + while (isspace(*command_line)) command_line++; + } */ + + if (command_line == 0 || *command_line == 0) { + de_error("File name argument required"); + return( 0 ); + } else { + char *p = command_line; + + while (*p != 0 && !isspace(*(unsigned char *)p)) + p++; + arg_file_name = CORD_to_char_star( + CORD_substr(command_line, 0, p - command_line)); + } + + hwnd = CreateWindow (szAppName, + TEXT("Demonstration Editor"), + WS_OVERLAPPEDWINDOW | WS_CAPTION, /* Window style */ + CW_USEDEFAULT, 0, /* default pos. */ + CW_USEDEFAULT, 0, /* default width, height */ + NULL, /* No parent */ + NULL, /* Window class menu */ + hInstance, NULL); + if (hwnd == NULL) { + de_error("CreateWindow error"); + return(0); + } + + ShowWindow (hwnd, nCmdShow); + + hAccel = LoadAccelerators( hInstance, szAppName ); + + while (GetMessage (&msg, NULL, 0, 0)) + { + if( !TranslateAccelerator( hwnd, hAccel, &msg ) ) + { + TranslateMessage (&msg); + DispatchMessage (&msg); + } + } + return (int)msg.wParam; +} + +/* Return the argument with all control characters replaced by blanks. */ +char * plain_chars(char * text, size_t len) +{ + char * result = GC_MALLOC_ATOMIC(len + 1); + register size_t i; + + if (NULL == result) return NULL; + for (i = 0; i < len; i++) { + if (iscntrl(((unsigned char *)text)[i])) { + result[i] = ' '; + } else { + result[i] = text[i]; + } + } + result[len] = '\0'; + return(result); +} + +/* Return the argument with all non-control-characters replaced by */ +/* blank, and all control characters c replaced by c + 32. */ +char * control_chars(char * text, size_t len) +{ + char * result = GC_MALLOC_ATOMIC(len + 1); + register size_t i; + + if (NULL == result) return NULL; + for (i = 0; i < len; i++) { + if (iscntrl(((unsigned char *)text)[i])) { + result[i] = text[i] + 0x40; + } else { + result[i] = ' '; + } + } + result[len] = '\0'; + return(result); +} + +int char_width; +int char_height; + +void get_line_rect(int line, int win_width, RECT * rectp) +{ + rectp -> top = line * (LONG)char_height; + rectp -> bottom = rectp->top + char_height; + rectp -> left = 0; + rectp -> right = win_width; +} + +int caret_visible = 0; /* Caret is currently visible. */ + +int screen_was_painted = 0;/* Screen has been painted at least once. */ + +void update_cursor(void); + +INT_PTR CALLBACK AboutBoxCallback( HWND hDlg, UINT message, + WPARAM wParam, LPARAM lParam ) +{ + (void)lParam; + switch( message ) + { + case WM_INITDIALOG: + SetFocus( GetDlgItem( hDlg, IDOK ) ); + break; + + case WM_COMMAND: + switch( wParam ) + { + case IDOK: + EndDialog( hDlg, TRUE ); + break; + } + break; + + case WM_CLOSE: + EndDialog( hDlg, TRUE ); + return TRUE; + + } + return FALSE; +} + +LRESULT CALLBACK WndProc (HWND hwnd, UINT message, + WPARAM wParam, LPARAM lParam) +{ + static HANDLE hInstance; + HDC dc; + PAINTSTRUCT ps; + RECT client_area; + RECT this_line; + RECT dummy; + TEXTMETRIC tm; + register int i; + int id; + + switch (message) + { + case WM_CREATE: + hInstance = ( (LPCREATESTRUCT) lParam)->hInstance; + dc = GetDC(hwnd); + SelectObject(dc, GetStockObject(SYSTEM_FIXED_FONT)); + GetTextMetrics(dc, &tm); + ReleaseDC(hwnd, dc); + char_width = tm.tmAveCharWidth; + char_height = tm.tmHeight + tm.tmExternalLeading; + GetClientRect(hwnd, &client_area); + COLS = (client_area.right - client_area.left)/char_width; + LINES = (client_area.bottom - client_area.top)/char_height; + generic_init(); + return(0); + + case WM_CHAR: + if (wParam == QUIT) { + SendMessage( hwnd, WM_CLOSE, 0, 0L ); + } else { + do_command((int)wParam); + } + return(0); + + case WM_SETFOCUS: + CreateCaret(hwnd, NULL, char_width, char_height); + ShowCaret(hwnd); + caret_visible = 1; + update_cursor(); + return(0); + + case WM_KILLFOCUS: + HideCaret(hwnd); + DestroyCaret(); + caret_visible = 0; + return(0); + + case WM_LBUTTONUP: + { + unsigned xpos = LOWORD(lParam); /* From left */ + unsigned ypos = HIWORD(lParam); /* from top */ + + set_position(xpos / (unsigned)char_width, + ypos / (unsigned)char_height); + return(0); + } + + case WM_COMMAND: + id = LOWORD(wParam); + if (id & EDIT_CMD_FLAG) { + if (id & REPEAT_FLAG) do_command(REPEAT); + do_command(CHAR_CMD(id)); + return( 0 ); + } else { + switch(id) { + case IDM_FILEEXIT: + SendMessage( hwnd, WM_CLOSE, 0, 0L ); + return( 0 ); + + case IDM_HELPABOUT: + if( DialogBox( hInstance, TEXT("ABOUTBOX"), + hwnd, AboutBoxCallback ) ) + InvalidateRect( hwnd, NULL, TRUE ); + return( 0 ); + case IDM_HELPCONTENTS: + de_error( + "Cursor keys: ^B(left) ^F(right) ^P(up) ^N(down)\n" + "Undo: ^U Write: ^W Quit:^D Repeat count: ^R[n]\n" + "Top: ^T Locate (search, find): ^L text ^L\n"); + return( 0 ); + } + } + break; + + case WM_CLOSE: + DestroyWindow( hwnd ); + return 0; + + case WM_DESTROY: + PostQuitMessage (0); + GC_win32_free_heap(); + return 0; + + case WM_PAINT: + dc = BeginPaint(hwnd, &ps); + GetClientRect(hwnd, &client_area); + COLS = (client_area.right - client_area.left)/char_width; + LINES = (client_area.bottom - client_area.top)/char_height; + SelectObject(dc, GetStockObject(SYSTEM_FIXED_FONT)); + for (i = 0; i < LINES; i++) { + get_line_rect(i, client_area.right, &this_line); + if (IntersectRect(&dummy, &this_line, &ps.rcPaint)) { + CORD raw_line = retrieve_screen_line(i); + size_t len = CORD_len(raw_line); + char * text = CORD_to_char_star(raw_line); + /* May contain embedded NULLs */ + char * plain = plain_chars(text, len); + char * blanks = CORD_to_char_star(CORD_chars(' ', + COLS - len)); + char * control = control_chars(text, len); + if (NULL == plain || NULL == control) + de_error("Out of memory!"); + +# define RED RGB(255,0,0) + + SetBkMode(dc, OPAQUE); + SetTextColor(dc, GetSysColor(COLOR_WINDOWTEXT)); + + if (plain != NULL) + TextOutA(dc, this_line.left, this_line.top, + plain, (int)len); + TextOutA(dc, this_line.left + (int)len * char_width, + this_line.top, + blanks, (int)(COLS - len)); + SetBkMode(dc, TRANSPARENT); + SetTextColor(dc, RED); + if (control != NULL) + TextOutA(dc, this_line.left, this_line.top, + control, (int)strlen(control)); + } + } + EndPaint(hwnd, &ps); + screen_was_painted = 1; + return 0; + } + return DefWindowProc (hwnd, message, wParam, lParam); +} + +int last_col; +int last_line; + +void move_cursor(int c, int l) +{ + last_col = c; + last_line = l; + + if (caret_visible) update_cursor(); +} + +void update_cursor(void) +{ + SetCaretPos(last_col * char_width, last_line * char_height); + ShowCaret(hwnd); +} + +void invalidate_line(int i) +{ + RECT line; + + if (!screen_was_painted) return; + /* Invalidating a rectangle before painting seems result in a */ + /* major performance problem. */ + get_line_rect(i, COLS*char_width, &line); + InvalidateRect(hwnd, &line, FALSE); +} diff --git a/cord/tests/de_win.h b/cord/tests/de_win.h new file mode 100644 index 0000000..93c5eeb --- /dev/null +++ b/cord/tests/de_win.h @@ -0,0 +1,97 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* cord.h, de_cmds.h, and windows.h should be included before this. */ + +# define OTHER_FLAG 0x100 +# define EDIT_CMD_FLAG 0x200 +# define REPEAT_FLAG 0x400 + +# define CHAR_CMD(i) ((i) & 0xff) + +/* MENU: DE */ +#define IDM_FILESAVE (EDIT_CMD_FLAG + WRITE) +#define IDM_FILEEXIT (OTHER_FLAG + 1) +#define IDM_HELPABOUT (OTHER_FLAG + 2) +#define IDM_HELPCONTENTS (OTHER_FLAG + 3) + +#define IDM_EDITPDOWN (REPEAT_FLAG + EDIT_CMD_FLAG + DOWN) +#define IDM_EDITPUP (REPEAT_FLAG + EDIT_CMD_FLAG + UP) +#define IDM_EDITUNDO (EDIT_CMD_FLAG + UNDO) +#define IDM_EDITLOCATE (EDIT_CMD_FLAG + LOCATE) +#define IDM_EDITDOWN (EDIT_CMD_FLAG + DOWN) +#define IDM_EDITUP (EDIT_CMD_FLAG + UP) +#define IDM_EDITLEFT (EDIT_CMD_FLAG + LEFT) +#define IDM_EDITRIGHT (EDIT_CMD_FLAG + RIGHT) +#define IDM_EDITBS (EDIT_CMD_FLAG + BS) +#define IDM_EDITDEL (EDIT_CMD_FLAG + DEL) +#define IDM_EDITREPEAT (EDIT_CMD_FLAG + REPEAT) +#define IDM_EDITTOP (EDIT_CMD_FLAG + TOP) + + + + +/* Windows UI stuff */ + +LRESULT CALLBACK WndProc (HWND hwnd, UINT message, + WPARAM wParam, LPARAM lParam); + +/* Screen dimensions. Maintained by de_win.c. */ +extern int LINES; +extern int COLS; + +/* File being edited. */ +extern char * arg_file_name; + +/* Current display position in file. Maintained by de.c */ +extern int dis_line; +extern int dis_col; + +/* Current cursor position in file. */ +extern int line; +extern int col; + +/* + * Calls from de_win.c to de.c + */ + +CORD retrieve_screen_line(int i); + /* Get the contents of i'th screen line. */ + /* Relies on COLS. */ + +void set_position(int x, int y); + /* Set column, row. Upper left of window = (0,0). */ + +void do_command(int); + /* Execute an editor command. */ + /* Agument is a command character or one */ + /* of the IDM_ commands. */ + +void generic_init(void); + /* OS independent initialization */ + + +/* + * Calls from de.c to de_win.c + */ + +void move_cursor(int column, int line); + /* Physically move the cursor on the display, */ + /* so that it appears at */ + /* (column, line). */ + +void invalidate_line(int line); + /* Invalidate line i on the screen. */ + +void de_error(char *s); + /* Display error message. */ diff --git a/cord/tests/de_win.rc b/cord/tests/de_win.rc new file mode 100644 index 0000000..4ea3475 --- /dev/null +++ b/cord/tests/de_win.rc @@ -0,0 +1,71 @@ +/* + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to copy this garbage collector for any purpose, + * provided the above notices are retained on all copies. + */ + +#include "windows.h" +#include "de_cmds.h" +#include "de_win.h" + +ABOUTBOX DIALOG 19, 21, 163, 47 +STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU +CAPTION "About Demonstration Text Editor" +BEGIN + /* ICON "DE", -1, 8, 8, 13, 13, WS_CHILD | WS_VISIBLE */ + LTEXT "Demonstration Text Editor", -1, 44, 8, 118, 8, WS_CHILD | WS_VISIBLE | WS_GROUP + LTEXT "Version 4.1", -1, 44, 16, 60, 8, WS_CHILD | WS_VISIBLE | WS_GROUP + PUSHBUTTON "OK", IDOK, 118, 27, 24, 14, WS_CHILD | WS_VISIBLE | WS_TABSTOP +END + +DE MENU +BEGIN + POPUP "&File" + BEGIN + MENUITEM "&Save\t^W", IDM_FILESAVE + MENUITEM "E&xit\t^D", IDM_FILEEXIT + END + + POPUP "&Edit" + BEGIN + MENUITEM "Page &Down\t^R^N", IDM_EDITPDOWN + MENUITEM "Page &Up\t^R^P", IDM_EDITPUP + MENUITEM "U&ndo\t^U", IDM_EDITUNDO + MENUITEM "&Locate\t^L ... ^L", IDM_EDITLOCATE + MENUITEM "D&own\t^N", IDM_EDITDOWN + MENUITEM "U&p\t^P", IDM_EDITUP + MENUITEM "Le&ft\t^B", IDM_EDITLEFT + MENUITEM "&Right\t^F", IDM_EDITRIGHT + MENUITEM "Delete &Backward\tBS", IDM_EDITBS + MENUITEM "Delete F&orward\tDEL", IDM_EDITDEL + MENUITEM "&Top\t^T", IDM_EDITTOP + END + + POPUP "&Help" + BEGIN + MENUITEM "&Contents", IDM_HELPCONTENTS + MENUITEM "&About...", IDM_HELPABOUT + END + + MENUITEM "Page_&Down", IDM_EDITPDOWN + MENUITEM "Page_&Up", IDM_EDITPUP +END + +DE ACCELERATORS +BEGIN + "^R", IDM_EDITREPEAT + "^N", IDM_EDITDOWN + "^P", IDM_EDITUP + "^L", IDM_EDITLOCATE + "^B", IDM_EDITLEFT + "^F", IDM_EDITRIGHT + "^T", IDM_EDITTOP + VK_DELETE, IDM_EDITDEL, VIRTKEY + VK_BACK, IDM_EDITBS, VIRTKEY +END + +/* DE ICON cord\de_win.ICO */ diff --git a/darwin_stop_world.c b/darwin_stop_world.c new file mode 100644 index 0000000..37aee97 --- /dev/null +++ b/darwin_stop_world.c @@ -0,0 +1,768 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2010 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/pthread_support.h" + +/* This probably needs more porting work to ppc64. */ + +#if defined(GC_DARWIN_THREADS) + +#include +#include +#include + +/* From "Inside Mac OS X - Mach-O Runtime Architecture" published by Apple + Page 49: + "The space beneath the stack pointer, where a new stack frame would normally + be allocated, is called the red zone. This area as shown in Figure 3-2 may + be used for any purpose as long as a new stack frame does not need to be + added to the stack." + + Page 50: "If a leaf procedure's red zone usage would exceed 224 bytes, then + it must set up a stack frame just like routines that call other routines." +*/ +#ifdef POWERPC +# if CPP_WORDSZ == 32 +# define PPC_RED_ZONE_SIZE 224 +# elif CPP_WORDSZ == 64 +# define PPC_RED_ZONE_SIZE 320 +# endif +#endif + +#ifndef DARWIN_DONT_PARSE_STACK + +typedef struct StackFrame { + unsigned long savedSP; + unsigned long savedCR; + unsigned long savedLR; + unsigned long reserved[2]; + unsigned long savedRTOC; +} StackFrame; + +GC_INNER ptr_t GC_FindTopOfStack(unsigned long stack_start) +{ + StackFrame *frame; + +# ifdef POWERPC + if (stack_start == 0) { +# if CPP_WORDSZ == 32 + __asm__ __volatile__ ("lwz %0,0(r1)" : "=r" (frame)); +# else + __asm__ __volatile__ ("ld %0,0(r1)" : "=r" (frame)); +# endif + } else +# else + GC_ASSERT(stack_start != 0); /* not implemented */ +# endif /* !POWERPC */ + /* else */ { + frame = (StackFrame *)stack_start; + } + +# ifdef DEBUG_THREADS_EXTRA + GC_log_printf("FindTopOfStack start at sp = %p\n", (void *)frame); +# endif + while (frame->savedSP != 0) { + /* if there are no more stack frames, stop */ + + frame = (StackFrame*)frame->savedSP; + + /* we do these next two checks after going to the next frame + because the LR for the first stack frame in the loop + is not set up on purpose, so we shouldn't check it. */ + if ((frame->savedLR & ~0x3) == 0 || (frame->savedLR & ~0x3) == ~0x3UL) + break; /* if the next LR is bogus, stop */ + } +# ifdef DEBUG_THREADS_EXTRA + GC_log_printf("FindTopOfStack finish at sp = %p\n", (void *)frame); +# endif + return (ptr_t)frame; +} + +#endif /* !DARWIN_DONT_PARSE_STACK */ + +/* GC_query_task_threads controls whether to obtain the list of */ +/* the threads from the kernel or to use GC_threads table. */ +#ifdef GC_NO_THREADS_DISCOVERY +# define GC_query_task_threads FALSE +#elif defined(GC_DISCOVER_TASK_THREADS) +# define GC_query_task_threads TRUE +#else + STATIC GC_bool GC_query_task_threads = FALSE; +#endif /* !GC_NO_THREADS_DISCOVERY */ + +/* Use implicit threads registration (all task threads excluding the GC */ +/* special ones are stopped and scanned). Should be called before */ +/* GC_INIT() (or, at least, before going multi-threaded). Deprecated. */ +GC_API void GC_CALL GC_use_threads_discovery(void) +{ +# if defined(GC_NO_THREADS_DISCOVERY) || defined(DARWIN_DONT_PARSE_STACK) + ABORT("Darwin task-threads-based stop and push unsupported"); +# else +# ifndef GC_ALWAYS_MULTITHREADED + GC_ASSERT(!GC_need_to_lock); +# endif +# ifndef GC_DISCOVER_TASK_THREADS + GC_query_task_threads = TRUE; +# endif + GC_init_parallel(); /* just to be consistent with Win32 one */ +# endif +} + +#ifndef kCFCoreFoundationVersionNumber_iOS_8_0 +# define kCFCoreFoundationVersionNumber_iOS_8_0 1140.1 +#endif + +/* Evaluates the stack range for a given thread. Returns the lower */ +/* bound and sets *phi to the upper one. */ +STATIC ptr_t GC_stack_range_for(ptr_t *phi, thread_act_t thread, GC_thread p, + GC_bool thread_blocked, mach_port_t my_thread, + ptr_t *paltstack_lo, + ptr_t *paltstack_hi GC_ATTR_UNUSED) +{ + ptr_t lo; + if (thread == my_thread) { + GC_ASSERT(!thread_blocked); + lo = GC_approx_sp(); +# ifndef DARWIN_DONT_PARSE_STACK + *phi = GC_FindTopOfStack(0); +# endif + + } else if (thread_blocked) { +# if defined(CPPCHECK) + if (NULL == p) ABORT("Invalid GC_thread passed to GC_stack_range_for"); +# endif + lo = p->stop_info.stack_ptr; +# ifndef DARWIN_DONT_PARSE_STACK + *phi = p->topOfStack; +# endif + + } else { + /* MACHINE_THREAD_STATE_COUNT does not seem to be defined */ + /* everywhere. Hence we use our own version. Alternatively, */ + /* we could use THREAD_STATE_MAX (but seems to be not optimal). */ + kern_return_t kern_result; + GC_THREAD_STATE_T state; + +# if defined(ARM32) && defined(ARM_THREAD_STATE32) + /* Use ARM_UNIFIED_THREAD_STATE on iOS8+ 32-bit targets and on */ + /* 64-bit H/W (iOS7+ 32-bit mode). */ + size_t size; + static cpu_type_t cputype = 0; + + if (cputype == 0) { + sysctlbyname("hw.cputype", &cputype, &size, NULL, 0); + } + if (cputype == CPU_TYPE_ARM64 + || kCFCoreFoundationVersionNumber + >= kCFCoreFoundationVersionNumber_iOS_8_0) { + arm_unified_thread_state_t unified_state; + mach_msg_type_number_t unified_thread_state_count + = ARM_UNIFIED_THREAD_STATE_COUNT; +# if defined(CPPCHECK) +# define GC_ARM_UNIFIED_THREAD_STATE 1 +# else +# define GC_ARM_UNIFIED_THREAD_STATE ARM_UNIFIED_THREAD_STATE +# endif + kern_result = thread_get_state(thread, GC_ARM_UNIFIED_THREAD_STATE, + (natural_t *)&unified_state, + &unified_thread_state_count); +# if !defined(CPPCHECK) + if (unified_state.ash.flavor != ARM_THREAD_STATE32) { + ABORT("unified_state flavor should be ARM_THREAD_STATE32"); + } +# endif + state = unified_state.ts_32; + } else +# endif + /* else */ { + mach_msg_type_number_t thread_state_count = GC_MACH_THREAD_STATE_COUNT; + + /* Get the thread state (registers, etc) */ + kern_result = thread_get_state(thread, GC_MACH_THREAD_STATE, + (natural_t *)&state, + &thread_state_count); + } +# ifdef DEBUG_THREADS + GC_log_printf("thread_get_state returns value = %d\n", kern_result); +# endif + if (kern_result != KERN_SUCCESS) + ABORT("thread_get_state failed"); + +# if defined(I386) + lo = (void *)state.THREAD_FLD(esp); +# ifndef DARWIN_DONT_PARSE_STACK + *phi = GC_FindTopOfStack(state.THREAD_FLD(esp)); +# endif + GC_push_one(state.THREAD_FLD(eax)); + GC_push_one(state.THREAD_FLD(ebx)); + GC_push_one(state.THREAD_FLD(ecx)); + GC_push_one(state.THREAD_FLD(edx)); + GC_push_one(state.THREAD_FLD(edi)); + GC_push_one(state.THREAD_FLD(esi)); + GC_push_one(state.THREAD_FLD(ebp)); + +# elif defined(X86_64) + lo = (void *)state.THREAD_FLD(rsp); +# ifndef DARWIN_DONT_PARSE_STACK + *phi = GC_FindTopOfStack(state.THREAD_FLD(rsp)); +# endif + GC_push_one(state.THREAD_FLD(rax)); + GC_push_one(state.THREAD_FLD(rbx)); + GC_push_one(state.THREAD_FLD(rcx)); + GC_push_one(state.THREAD_FLD(rdx)); + GC_push_one(state.THREAD_FLD(rdi)); + GC_push_one(state.THREAD_FLD(rsi)); + GC_push_one(state.THREAD_FLD(rbp)); + /* GC_push_one(state.THREAD_FLD(rsp)); */ + GC_push_one(state.THREAD_FLD(r8)); + GC_push_one(state.THREAD_FLD(r9)); + GC_push_one(state.THREAD_FLD(r10)); + GC_push_one(state.THREAD_FLD(r11)); + GC_push_one(state.THREAD_FLD(r12)); + GC_push_one(state.THREAD_FLD(r13)); + GC_push_one(state.THREAD_FLD(r14)); + GC_push_one(state.THREAD_FLD(r15)); + +# elif defined(POWERPC) + lo = (void *)(state.THREAD_FLD(r1) - PPC_RED_ZONE_SIZE); +# ifndef DARWIN_DONT_PARSE_STACK + *phi = GC_FindTopOfStack(state.THREAD_FLD(r1)); +# endif + GC_push_one(state.THREAD_FLD(r0)); + GC_push_one(state.THREAD_FLD(r2)); + GC_push_one(state.THREAD_FLD(r3)); + GC_push_one(state.THREAD_FLD(r4)); + GC_push_one(state.THREAD_FLD(r5)); + GC_push_one(state.THREAD_FLD(r6)); + GC_push_one(state.THREAD_FLD(r7)); + GC_push_one(state.THREAD_FLD(r8)); + GC_push_one(state.THREAD_FLD(r9)); + GC_push_one(state.THREAD_FLD(r10)); + GC_push_one(state.THREAD_FLD(r11)); + GC_push_one(state.THREAD_FLD(r12)); + GC_push_one(state.THREAD_FLD(r13)); + GC_push_one(state.THREAD_FLD(r14)); + GC_push_one(state.THREAD_FLD(r15)); + GC_push_one(state.THREAD_FLD(r16)); + GC_push_one(state.THREAD_FLD(r17)); + GC_push_one(state.THREAD_FLD(r18)); + GC_push_one(state.THREAD_FLD(r19)); + GC_push_one(state.THREAD_FLD(r20)); + GC_push_one(state.THREAD_FLD(r21)); + GC_push_one(state.THREAD_FLD(r22)); + GC_push_one(state.THREAD_FLD(r23)); + GC_push_one(state.THREAD_FLD(r24)); + GC_push_one(state.THREAD_FLD(r25)); + GC_push_one(state.THREAD_FLD(r26)); + GC_push_one(state.THREAD_FLD(r27)); + GC_push_one(state.THREAD_FLD(r28)); + GC_push_one(state.THREAD_FLD(r29)); + GC_push_one(state.THREAD_FLD(r30)); + GC_push_one(state.THREAD_FLD(r31)); + +# elif defined(ARM32) + lo = (void *)state.THREAD_FLD(sp); +# ifndef DARWIN_DONT_PARSE_STACK + *phi = GC_FindTopOfStack(state.THREAD_FLD(sp)); +# endif + { + int j; + for (j = 0; j <= 12; j++) { + GC_push_one(state.THREAD_FLD(r[j])); + } + } + /* "pc" and "sp" are skipped */ + GC_push_one(state.THREAD_FLD(lr)); + GC_push_one(state.THREAD_FLD(cpsr)); + +# elif defined(AARCH64) + lo = (void *)state.THREAD_FLD(sp); +# ifndef DARWIN_DONT_PARSE_STACK + *phi = GC_FindTopOfStack(state.THREAD_FLD(sp)); +# endif + { + int j; + for (j = 0; j <= 28; j++) { + GC_push_one(state.THREAD_FLD(x[j])); + } + } + /* "cpsr", "pc" and "sp" are skipped */ + GC_push_one(state.THREAD_FLD(fp)); + GC_push_one(state.THREAD_FLD(lr)); + +# elif defined(CPPCHECK) + lo = NULL; +# else +# error FIXME for non-x86 || ppc || arm architectures +# endif + } /* thread != my_thread */ + +# ifdef DARWIN_DONT_PARSE_STACK + /* p is guaranteed to be non-NULL regardless of GC_query_task_threads. */ + *phi = (p->flags & MAIN_THREAD) != 0 ? GC_stackbottom : p->stack_end; +# endif + + /* TODO: Determine p and handle altstack if !DARWIN_DONT_PARSE_STACK */ +# ifdef DARWIN_DONT_PARSE_STACK + if (p->altstack != NULL && (word)p->altstack <= (word)lo + && (word)lo <= (word)p->altstack + p->altstack_size) { + *paltstack_lo = lo; + *paltstack_hi = p->altstack + p->altstack_size; + lo = p->stack; + *phi = p->stack + p->stack_size; + } else +# endif + /* else */ { + *paltstack_lo = NULL; + } +# ifdef DEBUG_THREADS + GC_log_printf("Darwin: Stack for thread %p = [%p,%p)\n", + (void *)(word)thread, (void *)lo, (void *)(*phi)); +# endif + return lo; +} + +GC_INNER void GC_push_all_stacks(void) +{ + ptr_t hi, altstack_lo, altstack_hi; + task_t my_task = current_task(); + mach_port_t my_thread = mach_thread_self(); + GC_bool found_me = FALSE; + int nthreads = 0; + word total_size = 0; + mach_msg_type_number_t listcount = (mach_msg_type_number_t)THREAD_TABLE_SZ; + if (!EXPECT(GC_thr_initialized, TRUE)) + GC_thr_init(); + +# ifndef DARWIN_DONT_PARSE_STACK + if (GC_query_task_threads) { + int i; + kern_return_t kern_result; + thread_act_array_t act_list = 0; + + /* Obtain the list of the threads from the kernel. */ + kern_result = task_threads(my_task, &act_list, &listcount); + if (kern_result != KERN_SUCCESS) + ABORT("task_threads failed"); + + for (i = 0; i < (int)listcount; i++) { + thread_act_t thread = act_list[i]; + ptr_t lo = GC_stack_range_for(&hi, thread, NULL, FALSE, my_thread, + &altstack_lo, &altstack_hi); + + if (lo) { + GC_ASSERT((word)lo <= (word)hi); + total_size += hi - lo; + GC_push_all_stack(lo, hi); + } + /* TODO: Handle altstack */ + nthreads++; + if (thread == my_thread) + found_me = TRUE; + mach_port_deallocate(my_task, thread); + } /* for (i=0; ...) */ + + vm_deallocate(my_task, (vm_address_t)act_list, + sizeof(thread_t) * listcount); + } else +# endif /* !DARWIN_DONT_PARSE_STACK */ + /* else */ { + int i; + + for (i = 0; i < (int)listcount; i++) { + GC_thread p; + + for (p = GC_threads[i]; p != NULL; p = p->next) + if ((p->flags & FINISHED) == 0) { + thread_act_t thread = (thread_act_t)p->stop_info.mach_thread; + ptr_t lo = GC_stack_range_for(&hi, thread, p, + (GC_bool)p->thread_blocked, + my_thread, &altstack_lo, + &altstack_hi); + + if (lo) { + GC_ASSERT((word)lo <= (word)hi); + total_size += hi - lo; + GC_push_all_stack_sections(lo, hi, p->traced_stack_sect); + } + if (altstack_lo) { + total_size += altstack_hi - altstack_lo; + GC_push_all_stack(altstack_lo, altstack_hi); + } + nthreads++; + if (thread == my_thread) + found_me = TRUE; + } + } /* for (i=0; ...) */ + } + + mach_port_deallocate(my_task, my_thread); + GC_VERBOSE_LOG_PRINTF("Pushed %d thread stacks\n", nthreads); + if (!found_me && !GC_in_thread_creation) + ABORT("Collecting from unknown thread"); + GC_total_stacksize = total_size; +} + +#ifndef GC_NO_THREADS_DISCOVERY + +# ifdef MPROTECT_VDB + STATIC mach_port_t GC_mach_handler_thread = 0; + STATIC GC_bool GC_use_mach_handler_thread = FALSE; + + GC_INNER void GC_darwin_register_mach_handler_thread(mach_port_t thread) + { + GC_mach_handler_thread = thread; + GC_use_mach_handler_thread = TRUE; + } +# endif /* MPROTECT_VDB */ + +# ifndef GC_MAX_MACH_THREADS +# define GC_MAX_MACH_THREADS THREAD_TABLE_SZ +# endif + + struct GC_mach_thread { + thread_act_t thread; + GC_bool already_suspended; + }; + + struct GC_mach_thread GC_mach_threads[GC_MAX_MACH_THREADS]; + STATIC int GC_mach_threads_count = 0; + /* FIXME: it is better to implement GC_mach_threads as a hash set. */ + +/* returns true if there's a thread in act_list that wasn't in old_list */ +STATIC GC_bool GC_suspend_thread_list(thread_act_array_t act_list, int count, + thread_act_array_t old_list, + int old_count, mach_port_t my_thread) +{ + int i; + int j = -1; + GC_bool changed = FALSE; + + for (i = 0; i < count; i++) { + thread_act_t thread = act_list[i]; + GC_bool found; + struct thread_basic_info info; + mach_msg_type_number_t outCount; + kern_return_t kern_result; + + if (thread == my_thread +# ifdef MPROTECT_VDB + || (GC_mach_handler_thread == thread && GC_use_mach_handler_thread) +# endif + ) { + /* Don't add our and the handler threads. */ + continue; + } +# ifdef PARALLEL_MARK + if (GC_is_mach_marker(thread)) + continue; /* ignore the parallel marker threads */ +# endif + +# ifdef DEBUG_THREADS + GC_log_printf("Attempting to suspend thread %p\n", + (void *)(word)thread); +# endif + /* find the current thread in the old list */ + found = FALSE; + { + int last_found = j; /* remember the previous found thread index */ + + /* Search for the thread starting from the last found one first. */ + while (++j < old_count) + if (old_list[j] == thread) { + found = TRUE; + break; + } + if (!found) { + /* If not found, search in the rest (beginning) of the list. */ + for (j = 0; j < last_found; j++) + if (old_list[j] == thread) { + found = TRUE; + break; + } + + if (!found) { + /* add it to the GC_mach_threads list */ + if (GC_mach_threads_count == GC_MAX_MACH_THREADS) + ABORT("Too many threads"); + GC_mach_threads[GC_mach_threads_count].thread = thread; + /* default is not suspended */ + GC_mach_threads[GC_mach_threads_count].already_suspended = FALSE; + changed = TRUE; + } + } + } + + outCount = THREAD_INFO_MAX; + kern_result = thread_info(thread, THREAD_BASIC_INFO, + (thread_info_t)&info, &outCount); + if (kern_result != KERN_SUCCESS) { + /* The thread may have quit since the thread_threads() call we */ + /* mark already suspended so it's not dealt with anymore later. */ + if (!found) + GC_mach_threads[GC_mach_threads_count++].already_suspended = TRUE; + continue; + } +# ifdef DEBUG_THREADS + GC_log_printf("Thread state for %p = %d\n", (void *)(word)thread, + info.run_state); +# endif + if (info.suspend_count != 0) { + /* thread is already suspended. */ + if (!found) + GC_mach_threads[GC_mach_threads_count++].already_suspended = TRUE; + continue; + } + +# ifdef DEBUG_THREADS + GC_log_printf("Suspending %p\n", (void *)(word)thread); +# endif + kern_result = thread_suspend(thread); + if (kern_result != KERN_SUCCESS) { + /* The thread may have quit since the thread_threads() call we */ + /* mark already suspended so it's not dealt with anymore later. */ + if (!found) + GC_mach_threads[GC_mach_threads_count++].already_suspended = TRUE; + continue; + } + if (!found) + GC_mach_threads_count++; + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_SUSPENDED, (void *)(word)thread); + } + return changed; +} + +#endif /* !GC_NO_THREADS_DISCOVERY */ + +/* Caller holds allocation lock. */ +GC_INNER void GC_stop_world(void) +{ + task_t my_task = current_task(); + mach_port_t my_thread = mach_thread_self(); + kern_return_t kern_result; + +# ifdef DEBUG_THREADS + GC_log_printf("Stopping the world from thread %p\n", + (void *)(word)my_thread); +# endif +# ifdef PARALLEL_MARK + if (GC_parallel) { + /* Make sure all free list construction has stopped before we */ + /* start. No new construction can start, since free list */ + /* construction is required to acquire and release the GC lock */ + /* before it starts, and we have the lock. */ + GC_acquire_mark_lock(); + GC_ASSERT(GC_fl_builder_count == 0); + /* We should have previously waited for it to become zero. */ + } +# endif /* PARALLEL_MARK */ + + if (GC_query_task_threads) { +# ifndef GC_NO_THREADS_DISCOVERY + unsigned i; + GC_bool changed; + thread_act_array_t act_list, prev_list; + mach_msg_type_number_t listcount, prevcount; + + /* Clear out the mach threads list table. We do not need to */ + /* really clear GC_mach_threads[] as it is used only in the range */ + /* from 0 to GC_mach_threads_count-1, inclusive. */ + GC_mach_threads_count = 0; + + /* Loop stopping threads until you have gone over the whole list */ + /* twice without a new one appearing. thread_create() won't */ + /* return (and thus the thread stop) until the new thread exists, */ + /* so there is no window whereby you could stop a thread, */ + /* recognize it is stopped, but then have a new thread it created */ + /* before stopping show up later. */ + changed = TRUE; + prev_list = NULL; + prevcount = 0; + do { + kern_result = task_threads(my_task, &act_list, &listcount); + + if (kern_result == KERN_SUCCESS) { + changed = GC_suspend_thread_list(act_list, listcount, prev_list, + prevcount, my_thread); + + if (prev_list != NULL) { + for (i = 0; i < prevcount; i++) + mach_port_deallocate(my_task, prev_list[i]); + + vm_deallocate(my_task, (vm_address_t)prev_list, + sizeof(thread_t) * prevcount); + } + + /* Repeat while having changes. */ + prev_list = act_list; + prevcount = listcount; + } + } while (changed); + + GC_ASSERT(prev_list != 0); + for (i = 0; i < prevcount; i++) + mach_port_deallocate(my_task, prev_list[i]); + vm_deallocate(my_task, (vm_address_t)act_list, + sizeof(thread_t) * listcount); +# endif /* !GC_NO_THREADS_DISCOVERY */ + + } else { + unsigned i; + + for (i = 0; i < THREAD_TABLE_SZ; i++) { + GC_thread p; + + for (p = GC_threads[i]; p != NULL; p = p->next) { + if ((p->flags & FINISHED) == 0 && !p->thread_blocked && + p->stop_info.mach_thread != my_thread) { + + kern_result = thread_suspend(p->stop_info.mach_thread); + if (kern_result != KERN_SUCCESS) + ABORT("thread_suspend failed"); + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_SUSPENDED, + (void *)(word)p->stop_info.mach_thread); + } + } + } + } + +# ifdef MPROTECT_VDB + if(GC_incremental) { + GC_mprotect_stop(); + } +# endif +# ifdef PARALLEL_MARK + if (GC_parallel) + GC_release_mark_lock(); +# endif + +# ifdef DEBUG_THREADS + GC_log_printf("World stopped from %p\n", (void *)(word)my_thread); +# endif + mach_port_deallocate(my_task, my_thread); +} + +GC_INLINE void GC_thread_resume(thread_act_t thread) +{ + kern_return_t kern_result; +# if defined(DEBUG_THREADS) || defined(GC_ASSERTIONS) + struct thread_basic_info info; + mach_msg_type_number_t outCount = THREAD_INFO_MAX; + kern_result = thread_info(thread, THREAD_BASIC_INFO, + (thread_info_t)&info, &outCount); + if (kern_result != KERN_SUCCESS) + ABORT("thread_info failed"); +# endif +# ifdef DEBUG_THREADS + GC_log_printf("Resuming thread %p with state %d\n", (void *)(word)thread, + info.run_state); +# endif + /* Resume the thread */ + kern_result = thread_resume(thread); + if (kern_result != KERN_SUCCESS) + ABORT("thread_resume failed"); + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_UNSUSPENDED, (void *)(word)thread); +} + +/* Caller holds allocation lock, and has held it continuously since */ +/* the world stopped. */ +GC_INNER void GC_start_world(void) +{ + task_t my_task = current_task(); +# ifdef DEBUG_THREADS + GC_log_printf("World starting\n"); +# endif +# ifdef MPROTECT_VDB + if(GC_incremental) { + GC_mprotect_resume(); + } +# endif + + if (GC_query_task_threads) { +# ifndef GC_NO_THREADS_DISCOVERY + int i; + int j = GC_mach_threads_count; + kern_return_t kern_result; + thread_act_array_t act_list; + mach_msg_type_number_t listcount; + + kern_result = task_threads(my_task, &act_list, &listcount); + if (kern_result != KERN_SUCCESS) + ABORT("task_threads failed"); + + for (i = 0; i < (int)listcount; i++) { + thread_act_t thread = act_list[i]; + int last_found = j; /* The thread index found during the */ + /* previous iteration (count value */ + /* means no thread found yet). */ + + /* Search for the thread starting from the last found one first. */ + while (++j < GC_mach_threads_count) { + if (GC_mach_threads[j].thread == thread) + break; + } + if (j >= GC_mach_threads_count) { + /* If not found, search in the rest (beginning) of the list. */ + for (j = 0; j < last_found; j++) { + if (GC_mach_threads[j].thread == thread) + break; + } + } + + if (j != last_found) { + /* The thread is found in GC_mach_threads. */ + if (GC_mach_threads[j].already_suspended) { +# ifdef DEBUG_THREADS + GC_log_printf("Not resuming already suspended thread %p\n", + (void *)(word)thread); +# endif + } else { + GC_thread_resume(thread); + } + } + + mach_port_deallocate(my_task, thread); + } + vm_deallocate(my_task, (vm_address_t)act_list, + sizeof(thread_t) * listcount); +# endif /* !GC_NO_THREADS_DISCOVERY */ + + } else { + int i; + mach_port_t my_thread = mach_thread_self(); + + for (i = 0; i < THREAD_TABLE_SZ; i++) { + GC_thread p; + for (p = GC_threads[i]; p != NULL; p = p->next) { + if ((p->flags & FINISHED) == 0 && !p->thread_blocked && + p->stop_info.mach_thread != my_thread) + GC_thread_resume(p->stop_info.mach_thread); + } + } + + mach_port_deallocate(my_task, my_thread); + } + +# ifdef DEBUG_THREADS + GC_log_printf("World started\n"); +# endif +} + +#endif /* GC_DARWIN_THREADS */ diff --git a/dbg_mlc.c b/dbg_mlc.c new file mode 100644 index 0000000..724d9cf --- /dev/null +++ b/dbg_mlc.c @@ -0,0 +1,1296 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. + * Copyright (c) 1997 by Silicon Graphics. All rights reserved. + * Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P. + * Copyright (C) 2007 Free Software Foundation, Inc + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/dbg_mlc.h" + +#ifndef MSWINCE +# include +#endif +#include + +#ifndef SHORT_DBG_HDRS + /* Check whether object with base pointer p has debugging info. */ + /* p is assumed to point to a legitimate object in our part */ + /* of the heap. */ + /* This excludes the check as to whether the back pointer is */ + /* odd, which is added by the GC_HAS_DEBUG_INFO macro. */ + /* Note that if DBG_HDRS_ALL is set, uncollectible objects */ + /* on free lists may not have debug information set. Thus it's */ + /* not always safe to return TRUE (1), even if the client does */ + /* its part. Return -1 if the object with debug info has been */ + /* marked as deallocated. */ + GC_INNER int GC_has_other_debug_info(ptr_t p) + { + ptr_t body = (ptr_t)((oh *)p + 1); + word sz = GC_size(p); + + if (HBLKPTR(p) != HBLKPTR((ptr_t)body) + || sz < DEBUG_BYTES + EXTRA_BYTES) { + return 0; + } + if (((oh *)p) -> oh_sf != (START_FLAG ^ (word)body) + && ((word *)p)[BYTES_TO_WORDS(sz)-1] != (END_FLAG ^ (word)body)) { + return 0; + } + if (((oh *)p)->oh_sz == sz) { + /* Object may have had debug info, but has been deallocated */ + return -1; + } + return 1; + } +#endif /* !SHORT_DBG_HDRS */ + +#ifdef LINT2 + long GC_random(void) + { + static unsigned seed = 1; /* not thread-safe */ + + /* Linear congruential pseudo-random numbers generator. */ + seed = (seed * 1103515245U + 12345) & GC_RAND_MAX; /* overflow is ok */ + return (long)seed; + } +#endif + +#ifdef KEEP_BACK_PTRS + +#ifdef LINT2 +# define RANDOM() GC_random() +#else +# include +# define GC_RAND_MAX RAND_MAX + +# if defined(__GLIBC__) || defined(SOLARIS) \ + || defined(HPUX) || defined(IRIX5) || defined(OSF1) +# define RANDOM() random() +# else +# define RANDOM() (long)rand() +# endif +#endif /* !LINT2 */ + + /* Store back pointer to source in dest, if that appears to be possible. */ + /* This is not completely safe, since we may mistakenly conclude that */ + /* dest has a debugging wrapper. But the error probability is very */ + /* small, and this shouldn't be used in production code. */ + /* We assume that dest is the real base pointer. Source will usually */ + /* be a pointer to the interior of an object. */ + GC_INNER void GC_store_back_pointer(ptr_t source, ptr_t dest) + { + if (GC_HAS_DEBUG_INFO(dest)) { + ((oh *)dest) -> oh_back_ptr = HIDE_BACK_PTR(source); + } + } + + GC_INNER void GC_marked_for_finalization(ptr_t dest) + { + GC_store_back_pointer(MARKED_FOR_FINALIZATION, dest); + } + + /* Store information about the object referencing dest in *base_p */ + /* and *offset_p. */ + /* source is root ==> *base_p = address, *offset_p = 0 */ + /* source is heap object ==> *base_p != 0, *offset_p = offset */ + /* Returns 1 on success, 0 if source couldn't be determined. */ + /* Dest can be any address within a heap object. */ + GC_API GC_ref_kind GC_CALL GC_get_back_ptr_info(void *dest, void **base_p, + size_t *offset_p) + { + oh * hdr = (oh *)GC_base(dest); + ptr_t bp; + ptr_t bp_base; + +# ifdef LINT2 + /* Explicitly instruct the code analysis tool that */ + /* GC_get_back_ptr_info is not expected to be called with an */ + /* incorrect "dest" value. */ + if (!hdr) ABORT("Invalid GC_get_back_ptr_info argument"); +# endif + if (!GC_HAS_DEBUG_INFO((ptr_t) hdr)) return GC_NO_SPACE; + bp = GC_REVEAL_POINTER(hdr -> oh_back_ptr); + if (MARKED_FOR_FINALIZATION == bp) return GC_FINALIZER_REFD; + if (MARKED_FROM_REGISTER == bp) return GC_REFD_FROM_REG; + if (NOT_MARKED == bp) return GC_UNREFERENCED; +# if ALIGNMENT == 1 + /* Heuristically try to fix off by 1 errors we introduced by */ + /* insisting on even addresses. */ + { + ptr_t alternate_ptr = bp + 1; + ptr_t target = *(ptr_t *)bp; + ptr_t alternate_target = *(ptr_t *)alternate_ptr; + + if ((word)alternate_target >= (word)GC_least_plausible_heap_addr + && (word)alternate_target <= (word)GC_greatest_plausible_heap_addr + && ((word)target < (word)GC_least_plausible_heap_addr + || (word)target > (word)GC_greatest_plausible_heap_addr)) { + bp = alternate_ptr; + } + } +# endif + bp_base = GC_base(bp); + if (0 == bp_base) { + *base_p = bp; + *offset_p = 0; + return GC_REFD_FROM_ROOT; + } else { + if (GC_HAS_DEBUG_INFO(bp_base)) bp_base += sizeof(oh); + *base_p = bp_base; + *offset_p = bp - bp_base; + return GC_REFD_FROM_HEAP; + } + } + + /* Generate a random heap address. */ + /* The resulting address is in the heap, but */ + /* not necessarily inside a valid object. */ + GC_API void * GC_CALL GC_generate_random_heap_address(void) + { + size_t i; + word heap_offset = RANDOM(); + + if (GC_heapsize > GC_RAND_MAX) { + heap_offset *= GC_RAND_MAX; + heap_offset += RANDOM(); + } + heap_offset %= GC_heapsize; + /* This doesn't yield a uniform distribution, especially if */ + /* e.g. RAND_MAX = 1.5* GC_heapsize. But for typical cases, */ + /* it's not too bad. */ + for (i = 0;; ++i) { + size_t size; + + if (i >= GC_n_heap_sects) + ABORT("GC_generate_random_heap_address: size inconsistency"); + + size = GC_heap_sects[i].hs_bytes; + if (heap_offset < size) { + break; + } else { + heap_offset -= size; + } + } + return GC_heap_sects[i].hs_start + heap_offset; + } + + /* Generate a random address inside a valid marked heap object. */ + GC_API void * GC_CALL GC_generate_random_valid_address(void) + { + ptr_t result; + ptr_t base; + do { + result = GC_generate_random_heap_address(); + base = GC_base(result); + } while (base == 0 || !GC_is_marked(base)); + return result; + } + + /* Print back trace for p */ + GC_API void GC_CALL GC_print_backtrace(void *p) + { + void *current = p; + int i; + GC_ref_kind source; + size_t offset; + void *base; + + GC_print_heap_obj(GC_base(current)); + + for (i = 0; ; ++i) { + source = GC_get_back_ptr_info(current, &base, &offset); + if (GC_UNREFERENCED == source) { + GC_err_printf("Reference could not be found\n"); + goto out; + } + if (GC_NO_SPACE == source) { + GC_err_printf("No debug info in object: Can't find reference\n"); + goto out; + } + GC_err_printf("Reachable via %d levels of pointers from ", i); + switch(source) { + case GC_REFD_FROM_ROOT: + GC_err_printf("root at %p\n\n", base); + goto out; + case GC_REFD_FROM_REG: + GC_err_printf("root in register\n\n"); + goto out; + case GC_FINALIZER_REFD: + GC_err_printf("list of finalizable objects\n\n"); + goto out; + case GC_REFD_FROM_HEAP: + GC_err_printf("offset %ld in object:\n", (long)offset); + /* Take GC_base(base) to get real base, i.e. header. */ + GC_print_heap_obj(GC_base(base)); + break; + default: + GC_err_printf("INTERNAL ERROR: UNEXPECTED SOURCE!!!!\n"); + goto out; + } + current = base; + } + out:; + } + + /* Force a garbage collection and generate/print a backtrace */ + /* from a random heap address. */ + GC_INNER void GC_generate_random_backtrace_no_gc(void) + { + void * current; + current = GC_generate_random_valid_address(); + GC_printf("\n****Chosen address %p in object\n", current); + GC_print_backtrace(current); + } + + GC_API void GC_CALL GC_generate_random_backtrace(void) + { + if (GC_try_to_collect(GC_never_stop_func) == 0) { + GC_err_printf("Cannot generate a backtrace: " + "garbage collection is disabled!\n"); + return; + } + GC_generate_random_backtrace_no_gc(); + } + +#endif /* KEEP_BACK_PTRS */ + +# define CROSSES_HBLK(p, sz) \ + (((word)((p) + sizeof(oh) + (sz) - 1) ^ (word)(p)) >= HBLKSIZE) + +/* Store debugging info into p. Return displaced pointer. */ +/* This version assumes we do hold the allocation lock. */ +STATIC ptr_t GC_store_debug_info_inner(ptr_t p, word sz GC_ATTR_UNUSED, + const char *string, int linenum) +{ + word * result = (word *)((oh *)p + 1); + + GC_ASSERT(GC_size(p) >= sizeof(oh) + sz); + GC_ASSERT(!(SMALL_OBJ(sz) && CROSSES_HBLK(p, sz))); +# ifdef KEEP_BACK_PTRS + ((oh *)p) -> oh_back_ptr = HIDE_BACK_PTR(NOT_MARKED); +# endif +# ifdef MAKE_BACK_GRAPH + ((oh *)p) -> oh_bg_ptr = HIDE_BACK_PTR((ptr_t)0); +# endif + ((oh *)p) -> oh_string = string; + ((oh *)p) -> oh_int = (word)linenum; +# ifndef SHORT_DBG_HDRS + ((oh *)p) -> oh_sz = sz; + ((oh *)p) -> oh_sf = START_FLAG ^ (word)result; + ((word *)p)[BYTES_TO_WORDS(GC_size(p))-1] = + result[SIMPLE_ROUNDED_UP_WORDS(sz)] = END_FLAG ^ (word)result; +# endif + return((ptr_t)result); +} + +GC_INNER ptr_t GC_store_debug_info(ptr_t p, word sz, const char *string, + int linenum) +{ + ptr_t result; + DCL_LOCK_STATE; + + LOCK(); + result = GC_store_debug_info_inner(p, sz, string, linenum); + UNLOCK(); + return result; +} + +#ifndef SHORT_DBG_HDRS + /* Check the object with debugging info at ohdr. */ + /* Return NULL if it's OK. Else return clobbered */ + /* address. */ + STATIC ptr_t GC_check_annotated_obj(oh *ohdr) + { + ptr_t body = (ptr_t)(ohdr + 1); + word gc_sz = GC_size((ptr_t)ohdr); + if (ohdr -> oh_sz + DEBUG_BYTES > gc_sz) { + return((ptr_t)(&(ohdr -> oh_sz))); + } + if (ohdr -> oh_sf != (START_FLAG ^ (word)body)) { + return((ptr_t)(&(ohdr -> oh_sf))); + } + if (((word *)ohdr)[BYTES_TO_WORDS(gc_sz)-1] != (END_FLAG ^ (word)body)) { + return((ptr_t)((word *)ohdr + BYTES_TO_WORDS(gc_sz)-1)); + } + if (((word *)body)[SIMPLE_ROUNDED_UP_WORDS(ohdr -> oh_sz)] + != (END_FLAG ^ (word)body)) { + return((ptr_t)((word *)body + SIMPLE_ROUNDED_UP_WORDS(ohdr->oh_sz))); + } + return(0); + } +#endif /* !SHORT_DBG_HDRS */ + +STATIC GC_describe_type_fn GC_describe_type_fns[MAXOBJKINDS] = {0}; + +GC_API void GC_CALL GC_register_describe_type_fn(int kind, + GC_describe_type_fn fn) +{ + GC_describe_type_fns[kind] = fn; +} + +#define GET_OH_LINENUM(ohdr) ((int)(ohdr)->oh_int) + +#ifndef SHORT_DBG_HDRS +# define IF_NOT_SHORTDBG_HDRS(x) x +# define COMMA_IFNOT_SHORTDBG_HDRS(x) /* comma */, x +#else +# define IF_NOT_SHORTDBG_HDRS(x) /* empty */ +# define COMMA_IFNOT_SHORTDBG_HDRS(x) /* empty */ +#endif + +/* Print a human-readable description of the object to stderr. */ +/* p points to somewhere inside an object with the debugging info. */ +STATIC void GC_print_obj(ptr_t p) +{ + oh * ohdr = (oh *)GC_base(p); + ptr_t q; + hdr * hhdr; + int kind; + char *kind_str; + char buffer[GC_TYPE_DESCR_LEN + 1]; + + GC_ASSERT(I_DONT_HOLD_LOCK()); +# ifdef LINT2 + if (!ohdr) ABORT("Invalid GC_print_obj argument"); +# endif + + q = (ptr_t)(ohdr + 1); + /* Print a type description for the object whose client-visible */ + /* address is q. */ + hhdr = GC_find_header(q); + kind = hhdr -> hb_obj_kind; + if (0 != GC_describe_type_fns[kind] && GC_is_marked(ohdr)) { + /* This should preclude free list objects except with */ + /* thread-local allocation. */ + buffer[GC_TYPE_DESCR_LEN] = 0; + (GC_describe_type_fns[kind])(q, buffer); + GC_ASSERT(buffer[GC_TYPE_DESCR_LEN] == 0); + kind_str = buffer; + } else { + switch(kind) { + case PTRFREE: + kind_str = "PTRFREE"; + break; + case NORMAL: + kind_str = "NORMAL"; + break; + case UNCOLLECTABLE: + kind_str = "UNCOLLECTABLE"; + break; +# ifdef GC_ATOMIC_UNCOLLECTABLE + case AUNCOLLECTABLE: + kind_str = "ATOMIC_UNCOLLECTABLE"; + break; +# endif + case STUBBORN: + kind_str = "STUBBORN"; + break; + default: + kind_str = NULL; + /* The alternative is to use snprintf(buffer) but it is */ + /* not quite portable (see vsnprintf in misc.c). */ + } + } + + if (NULL != kind_str) { + GC_err_printf("%p (%s:%d," IF_NOT_SHORTDBG_HDRS(" sz=%lu,") " %s)\n", + (void *)((ptr_t)ohdr + sizeof(oh)), + ohdr->oh_string, GET_OH_LINENUM(ohdr) /*, */ + COMMA_IFNOT_SHORTDBG_HDRS((unsigned long)ohdr->oh_sz), + kind_str); + } else { + GC_err_printf("%p (%s:%d," IF_NOT_SHORTDBG_HDRS(" sz=%lu,") + " kind=%d descr=0x%lx)\n", + (void *)((ptr_t)ohdr + sizeof(oh)), + ohdr->oh_string, GET_OH_LINENUM(ohdr) /*, */ + COMMA_IFNOT_SHORTDBG_HDRS((unsigned long)ohdr->oh_sz), + kind, (unsigned long)hhdr->hb_descr); + } + PRINT_CALL_CHAIN(ohdr); +} + +STATIC void GC_debug_print_heap_obj_proc(ptr_t p) +{ + GC_ASSERT(I_DONT_HOLD_LOCK()); + if (GC_HAS_DEBUG_INFO(p)) { + GC_print_obj(p); + } else { + GC_default_print_heap_obj_proc(p); + } +} + +#ifndef SHORT_DBG_HDRS + /* Use GC_err_printf and friends to print a description of the object */ + /* whose client-visible address is p, and which was smashed at */ + /* clobbered_addr. */ + STATIC void GC_print_smashed_obj(const char *msg, ptr_t p, + ptr_t clobbered_addr) + { + oh * ohdr = (oh *)GC_base(p); + + GC_ASSERT(I_DONT_HOLD_LOCK()); +# ifdef LINT2 + if (!ohdr) ABORT("Invalid GC_print_smashed_obj argument"); +# endif + if ((word)clobbered_addr <= (word)(&ohdr->oh_sz) + || ohdr -> oh_string == 0) { + GC_err_printf( + "%s %p in or near object at %p(, appr. sz = %lu)\n", + msg, (void *)clobbered_addr, (void *)p, + (unsigned long)(GC_size((ptr_t)ohdr) - DEBUG_BYTES)); + } else { + GC_err_printf("%s %p in or near object at %p (%s:%d, sz=%lu)\n", + msg, (void *)clobbered_addr, (void *)p, + (word)(ohdr -> oh_string) < HBLKSIZE ? "(smashed string)" : + ohdr -> oh_string[0] == '\0' ? "EMPTY(smashed?)" : + ohdr -> oh_string, + GET_OH_LINENUM(ohdr), (unsigned long)(ohdr -> oh_sz)); + PRINT_CALL_CHAIN(ohdr); + } + } + + STATIC void GC_check_heap_proc (void); + STATIC void GC_print_all_smashed_proc (void); +#else + STATIC void GC_do_nothing(void) {} +#endif + +STATIC void GC_start_debugging_inner(void) +{ + GC_ASSERT(I_HOLD_LOCK()); +# ifndef SHORT_DBG_HDRS + GC_check_heap = GC_check_heap_proc; + GC_print_all_smashed = GC_print_all_smashed_proc; +# else + GC_check_heap = GC_do_nothing; + GC_print_all_smashed = GC_do_nothing; +# endif + GC_print_heap_obj = GC_debug_print_heap_obj_proc; + GC_debugging_started = TRUE; + GC_register_displacement_inner((word)sizeof(oh)); +} + +GC_INNER void GC_start_debugging(void) +{ + DCL_LOCK_STATE; + + LOCK(); + GC_start_debugging_inner(); + UNLOCK(); +} + +size_t GC_debug_header_size = sizeof(oh); + +GC_API void GC_CALL GC_debug_register_displacement(size_t offset) +{ + DCL_LOCK_STATE; + + LOCK(); + GC_register_displacement_inner(offset); + GC_register_displacement_inner((word)sizeof(oh) + offset); + UNLOCK(); +} + +#ifdef GC_ADD_CALLER +# if defined(HAVE_DLADDR) && defined(GC_HAVE_RETURN_ADDR_PARENT) +# include + + STATIC void GC_caller_func_offset(word ad, const char **symp, int *offp) + { + Dl_info caller; + + if (ad && dladdr((void *)ad, &caller) && caller.dli_sname != NULL) { + *symp = caller.dli_sname; + *offp = (int)((char *)ad - (char *)caller.dli_saddr); + } + if (NULL == *symp) { + *symp = "unknown"; + } + } +# else +# define GC_caller_func_offset(ad, symp, offp) (void)(*(symp) = "unknown") +# endif +#endif /* GC_ADD_CALLER */ + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_malloc(size_t lb, + GC_EXTRA_PARAMS) +{ + void * result; + + /* Note that according to malloc() specification, if size is 0 then */ + /* malloc() returns either NULL, or a unique pointer value that can */ + /* later be successfully passed to free(). We always do the latter. */ + result = GC_malloc(SIZET_SAT_ADD(lb, DEBUG_BYTES)); +# ifdef GC_ADD_CALLER + if (s == NULL) { + GC_caller_func_offset(ra, &s, &i); + } +# endif + if (result == 0) { + GC_err_printf("GC_debug_malloc(%lu) returning NULL (%s:%d)\n", + (unsigned long)lb, s, i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, i)); +} + +GC_API GC_ATTR_MALLOC void * GC_CALL + GC_debug_malloc_ignore_off_page(size_t lb, GC_EXTRA_PARAMS) +{ + void * result = GC_malloc_ignore_off_page(SIZET_SAT_ADD(lb, DEBUG_BYTES)); + + if (result == 0) { + GC_err_printf("GC_debug_malloc_ignore_off_page(%lu)" + " returning NULL (%s:%d)\n", (unsigned long)lb, s, i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, i)); +} + +GC_API GC_ATTR_MALLOC void * GC_CALL + GC_debug_malloc_atomic_ignore_off_page(size_t lb, GC_EXTRA_PARAMS) +{ + void * result = GC_malloc_atomic_ignore_off_page( + SIZET_SAT_ADD(lb, DEBUG_BYTES)); + + if (result == 0) { + GC_err_printf("GC_debug_malloc_atomic_ignore_off_page(%lu)" + " returning NULL (%s:%d)\n", (unsigned long)lb, s, i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, i)); +} + +STATIC void * GC_debug_generic_malloc(size_t lb, int knd, GC_EXTRA_PARAMS) +{ + void * result = GC_generic_malloc(SIZET_SAT_ADD(lb, DEBUG_BYTES), knd); + + if (NULL == result) { + GC_err_printf( + "GC_debug_generic_malloc(%lu, %d) returning NULL (%s:%d)\n", + (unsigned long)lb, knd, s, i); + return NULL; + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return GC_store_debug_info(result, (word)lb, s, i); +} + +#ifdef DBG_HDRS_ALL + /* An allocation function for internal use. Normally internally */ + /* allocated objects do not have debug information. But in this */ + /* case, we need to make sure that all objects have debug headers. */ + /* We assume debugging was started in collector initialization, and */ + /* we already hold the GC lock. */ + GC_INNER void * GC_debug_generic_malloc_inner(size_t lb, int k) + { + void * result = GC_generic_malloc_inner( + SIZET_SAT_ADD(lb, DEBUG_BYTES), k); + + if (result == 0) { + GC_err_printf("GC internal allocation (%lu bytes) returning NULL\n", + (unsigned long) lb); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging_inner(); + } + ADD_CALL_CHAIN(result, GC_RETURN_ADDR); + return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", 0)); + } + + GC_INNER void * GC_debug_generic_malloc_inner_ignore_off_page(size_t lb, + int k) + { + void * result = GC_generic_malloc_inner_ignore_off_page( + SIZET_SAT_ADD(lb, DEBUG_BYTES), k); + + if (result == 0) { + GC_err_printf("GC internal allocation (%lu bytes) returning NULL\n", + (unsigned long) lb); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging_inner(); + } + ADD_CALL_CHAIN(result, GC_RETURN_ADDR); + return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", 0)); + } +#endif /* DBG_HDRS_ALL */ + +#ifdef STUBBORN_ALLOC + GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_malloc_stubborn(size_t lb, + GC_EXTRA_PARAMS) + { + void * result = GC_malloc_stubborn(SIZET_SAT_ADD(lb, DEBUG_BYTES)); + + if (result == 0) { + GC_err_printf("GC_debug_malloc_stubborn(%lu)" + " returning NULL (%s:%d)\n", (unsigned long)lb, s, i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, i)); + } + + GC_API void GC_CALL GC_debug_change_stubborn(const void *p) + { + const void * q = GC_base_C(p); + hdr * hhdr; + + if (q == 0) { + ABORT_ARG1("GC_debug_change_stubborn: bad arg", ": %p", p); + } + hhdr = HDR(q); + if (hhdr -> hb_obj_kind != STUBBORN) { + ABORT_ARG1("GC_debug_change_stubborn: arg not stubborn", ": %p", p); + } + GC_change_stubborn(q); + } + + GC_API void GC_CALL GC_debug_end_stubborn_change(const void *p) + { + const void * q = GC_base_C(p); + hdr * hhdr; + + if (q == 0) { + ABORT_ARG1("GC_debug_end_stubborn_change: bad arg", ": %p", p); + } + hhdr = HDR(q); + if (hhdr -> hb_obj_kind != STUBBORN) { + ABORT_ARG1("GC_debug_end_stubborn_change: arg not stubborn", + ": %p", p); + } + GC_end_stubborn_change(q); + } + +#else /* !STUBBORN_ALLOC */ + + GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_malloc_stubborn(size_t lb, + GC_EXTRA_PARAMS) + { + return GC_debug_malloc(lb, OPT_RA s, i); + } + + GC_API void GC_CALL GC_debug_change_stubborn( + const void * p GC_ATTR_UNUSED) {} + + GC_API void GC_CALL GC_debug_end_stubborn_change( + const void * p GC_ATTR_UNUSED) {} +#endif /* !STUBBORN_ALLOC */ + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_malloc_atomic(size_t lb, + GC_EXTRA_PARAMS) +{ + void * result = GC_malloc_atomic(SIZET_SAT_ADD(lb, DEBUG_BYTES)); + + if (result == 0) { + GC_err_printf("GC_debug_malloc_atomic(%lu) returning NULL (%s:%d)\n", + (unsigned long)lb, s, i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, i)); +} + +GC_API GC_ATTR_MALLOC char * GC_CALL GC_debug_strdup(const char *str, + GC_EXTRA_PARAMS) +{ + char *copy; + size_t lb; + if (str == NULL) { + if (GC_find_leak) + GC_err_printf("strdup(NULL) behavior is undefined\n"); + return NULL; + } + + lb = strlen(str) + 1; + copy = GC_debug_malloc_atomic(lb, OPT_RA s, i); + if (copy == NULL) { +# ifndef MSWINCE + errno = ENOMEM; +# endif + return NULL; + } + BCOPY(str, copy, lb); + return copy; +} + +GC_API GC_ATTR_MALLOC char * GC_CALL GC_debug_strndup(const char *str, + size_t size, GC_EXTRA_PARAMS) +{ + char *copy; + size_t len = strlen(str); /* str is expected to be non-NULL */ + if (len > size) + len = size; + copy = GC_debug_malloc_atomic(len + 1, OPT_RA s, i); + if (copy == NULL) { +# ifndef MSWINCE + errno = ENOMEM; +# endif + return NULL; + } + BCOPY(str, copy, len); + copy[len] = '\0'; + return copy; +} + +#ifdef GC_REQUIRE_WCSDUP +# include /* for wcslen() */ + + GC_API GC_ATTR_MALLOC wchar_t * GC_CALL GC_debug_wcsdup(const wchar_t *str, + GC_EXTRA_PARAMS) + { + size_t lb = (wcslen(str) + 1) * sizeof(wchar_t); + wchar_t *copy = GC_debug_malloc_atomic(lb, OPT_RA s, i); + if (copy == NULL) { +# ifndef MSWINCE + errno = ENOMEM; +# endif + return NULL; + } + BCOPY(str, copy, lb); + return copy; + } +#endif /* GC_REQUIRE_WCSDUP */ + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_malloc_uncollectable(size_t lb, + GC_EXTRA_PARAMS) +{ + void * result = GC_malloc_uncollectable( + SIZET_SAT_ADD(lb, UNCOLLECTABLE_DEBUG_BYTES)); + + if (result == 0) { + GC_err_printf("GC_debug_malloc_uncollectable(%lu)" + " returning NULL (%s:%d)\n", (unsigned long)lb, s, i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, i)); +} + +#ifdef GC_ATOMIC_UNCOLLECTABLE + GC_API GC_ATTR_MALLOC void * GC_CALL + GC_debug_malloc_atomic_uncollectable(size_t lb, GC_EXTRA_PARAMS) + { + void * result = GC_malloc_atomic_uncollectable( + SIZET_SAT_ADD(lb, UNCOLLECTABLE_DEBUG_BYTES)); + + if (result == 0) { + GC_err_printf("GC_debug_malloc_atomic_uncollectable(%lu)" + " returning NULL (%s:%d)\n", (unsigned long)lb, s, i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, i)); + } +#endif /* GC_ATOMIC_UNCOLLECTABLE */ + +#ifndef GC_FREED_MEM_MARKER +# if CPP_WORDSZ == 32 +# define GC_FREED_MEM_MARKER 0xdeadbeef +# else +# define GC_FREED_MEM_MARKER GC_WORD_C(0xEFBEADDEdeadbeef) +# endif +#endif + +GC_API void GC_CALL GC_debug_free(void * p) +{ + ptr_t base; + if (0 == p) return; + + base = GC_base(p); + if (base == 0) { +# if defined(REDIRECT_MALLOC) \ + && ((defined(NEED_CALLINFO) && defined(GC_HAVE_BUILTIN_BACKTRACE)) \ + || defined(GC_LINUX_THREADS) || defined(GC_SOLARIS_THREADS) \ + || defined(MSWIN32)) + /* In some cases, we should ignore objects that do not belong */ + /* to the GC heap. See the comment in GC_free. */ + if (!GC_is_heap_ptr(p)) return; +# endif + ABORT_ARG1("Invalid pointer passed to free()", ": %p", p); + } + if ((ptr_t)p - (ptr_t)base != sizeof(oh)) { + GC_err_printf( + "GC_debug_free called on pointer %p w/o debugging info\n", p); + } else { +# ifndef SHORT_DBG_HDRS + ptr_t clobbered = GC_check_annotated_obj((oh *)base); + word sz = GC_size(base); + if (clobbered != 0) { + GC_have_errors = TRUE; + if (((oh *)base) -> oh_sz == sz) { + GC_print_smashed_obj( + "GC_debug_free: found previously deallocated (?) object at", + p, clobbered); + return; /* ignore double free */ + } else { + GC_print_smashed_obj("GC_debug_free: found smashed location at", + p, clobbered); + } + } + /* Invalidate size (mark the object as deallocated) */ + ((oh *)base) -> oh_sz = sz; +# endif /* SHORT_DBG_HDRS */ + } + if (GC_find_leak +# ifndef SHORT_DBG_HDRS + && ((ptr_t)p - (ptr_t)base != sizeof(oh) || !GC_findleak_delay_free) +# endif + ) { + GC_free(base); + } else { + hdr * hhdr = HDR(p); + if (hhdr -> hb_obj_kind == UNCOLLECTABLE +# ifdef GC_ATOMIC_UNCOLLECTABLE + || hhdr -> hb_obj_kind == AUNCOLLECTABLE +# endif + ) { + GC_free(base); + } else { + size_t i; + size_t obj_sz = BYTES_TO_WORDS(hhdr -> hb_sz - sizeof(oh)); + + for (i = 0; i < obj_sz; ++i) + ((word *)p)[i] = GC_FREED_MEM_MARKER; + GC_ASSERT((word *)p + i == (word *)(base + hhdr -> hb_sz)); + } + } /* !GC_find_leak */ +} + +#if defined(THREADS) && defined(DBG_HDRS_ALL) + /* Used internally; we assume it's called correctly. */ + GC_INNER void GC_debug_free_inner(void * p) + { + ptr_t base = GC_base(p); + GC_ASSERT((ptr_t)p - (ptr_t)base == sizeof(oh)); +# ifdef LINT2 + if (!base) ABORT("Invalid GC_debug_free_inner argument"); +# endif +# ifndef SHORT_DBG_HDRS + /* Invalidate size */ + ((oh *)base) -> oh_sz = GC_size(base); +# endif + GC_free_inner(base); + } +#endif + +GC_API void * GC_CALL GC_debug_realloc(void * p, size_t lb, GC_EXTRA_PARAMS) +{ + void * base; + void * result; + hdr * hhdr; + + if (p == 0) { + return GC_debug_malloc(lb, OPT_RA s, i); + } + if (0 == lb) /* and p != NULL */ { + GC_debug_free(p); + return NULL; + } + +# ifdef GC_ADD_CALLER + if (s == NULL) { + GC_caller_func_offset(ra, &s, &i); + } +# endif + base = GC_base(p); + if (base == 0) { + ABORT_ARG1("Invalid pointer passed to realloc()", ": %p", p); + } + if ((ptr_t)p - (ptr_t)base != sizeof(oh)) { + GC_err_printf( + "GC_debug_realloc called on pointer %p w/o debugging info\n", p); + return(GC_realloc(p, lb)); + } + hhdr = HDR(base); + switch (hhdr -> hb_obj_kind) { +# ifdef STUBBORN_ALLOC + case STUBBORN: + result = GC_debug_malloc_stubborn(lb, OPT_RA s, i); + break; +# endif + case NORMAL: + result = GC_debug_malloc(lb, OPT_RA s, i); + break; + case PTRFREE: + result = GC_debug_malloc_atomic(lb, OPT_RA s, i); + break; + case UNCOLLECTABLE: + result = GC_debug_malloc_uncollectable(lb, OPT_RA s, i); + break; +# ifdef GC_ATOMIC_UNCOLLECTABLE + case AUNCOLLECTABLE: + result = GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i); + break; +# endif + default: + result = NULL; /* initialized to prevent warning. */ + ABORT_RET("GC_debug_realloc: encountered bad kind"); + } + + if (result != NULL) { + size_t old_sz; +# ifdef SHORT_DBG_HDRS + old_sz = GC_size(base) - sizeof(oh); +# else + old_sz = ((oh *)base) -> oh_sz; +# endif + BCOPY(p, result, old_sz < lb ? old_sz : lb); + GC_debug_free(p); + } + return(result); +} + +GC_API GC_ATTR_MALLOC void * GC_CALL + GC_debug_generic_or_special_malloc(size_t lb, int knd, GC_EXTRA_PARAMS) +{ + switch (knd) { +# ifdef STUBBORN_ALLOC + case STUBBORN: + return GC_debug_malloc_stubborn(lb, OPT_RA s, i); +# endif + case PTRFREE: + return GC_debug_malloc_atomic(lb, OPT_RA s, i); + case NORMAL: + return GC_debug_malloc(lb, OPT_RA s, i); + case UNCOLLECTABLE: + return GC_debug_malloc_uncollectable(lb, OPT_RA s, i); +# ifdef GC_ATOMIC_UNCOLLECTABLE + case AUNCOLLECTABLE: + return GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i); +# endif + default: + return GC_debug_generic_malloc(lb, knd, OPT_RA s, i); + } +} + +#ifndef SHORT_DBG_HDRS + +/* List of smashed (clobbered) locations. We defer printing these, */ +/* since we can't always print them nicely with the allocation lock */ +/* held. We put them here instead of in GC_arrays, since it may be */ +/* useful to be able to look at them with the debugger. */ +#ifndef MAX_SMASHED +# define MAX_SMASHED 20 +#endif +STATIC ptr_t GC_smashed[MAX_SMASHED] = {0}; +STATIC unsigned GC_n_smashed = 0; + +STATIC void GC_add_smashed(ptr_t smashed) +{ + GC_ASSERT(GC_is_marked(GC_base(smashed))); + /* FIXME: Prevent adding an object while printing smashed list. */ + GC_smashed[GC_n_smashed] = smashed; + if (GC_n_smashed < MAX_SMASHED - 1) ++GC_n_smashed; + /* In case of overflow, we keep the first MAX_SMASHED-1 */ + /* entries plus the last one. */ + GC_have_errors = TRUE; +} + +/* Print all objects on the list. Clear the list. */ +STATIC void GC_print_all_smashed_proc(void) +{ + unsigned i; + + GC_ASSERT(I_DONT_HOLD_LOCK()); + if (GC_n_smashed == 0) return; + GC_err_printf("GC_check_heap_block: found %u smashed heap objects:\n", + GC_n_smashed); + for (i = 0; i < GC_n_smashed; ++i) { + ptr_t base = (ptr_t)GC_base(GC_smashed[i]); + +# ifdef LINT2 + if (!base) ABORT("Invalid GC_smashed element"); +# endif + GC_print_smashed_obj("", base + sizeof(oh), GC_smashed[i]); + GC_smashed[i] = 0; + } + GC_n_smashed = 0; +} + +/* Check all marked objects in the given block for validity */ +/* Avoid GC_apply_to_each_object for performance reasons. */ +STATIC void GC_check_heap_block(struct hblk *hbp, word dummy GC_ATTR_UNUSED) +{ + struct hblkhdr * hhdr = HDR(hbp); + size_t sz = hhdr -> hb_sz; + size_t bit_no; + char *p, *plim; + + p = hbp->hb_body; + if (sz > MAXOBJBYTES) { + plim = p; + } else { + plim = hbp->hb_body + HBLKSIZE - sz; + } + /* go through all words in block */ + for (bit_no = 0; (word)p <= (word)plim; + bit_no += MARK_BIT_OFFSET(sz), p += sz) { + if (mark_bit_from_hdr(hhdr, bit_no) && GC_HAS_DEBUG_INFO((ptr_t)p)) { + ptr_t clobbered = GC_check_annotated_obj((oh *)p); + if (clobbered != 0) + GC_add_smashed(clobbered); + } + } +} + +/* This assumes that all accessible objects are marked, and that */ +/* I hold the allocation lock. Normally called by collector. */ +STATIC void GC_check_heap_proc(void) +{ + GC_STATIC_ASSERT((sizeof(oh) & (GRANULE_BYTES - 1)) == 0); + /* FIXME: Should we check for twice that alignment? */ + GC_apply_to_all_blocks(GC_check_heap_block, 0); +} + +GC_INNER GC_bool GC_check_leaked(ptr_t base) +{ + size_t i; + size_t obj_sz; + word *p; + + if ( +# if defined(KEEP_BACK_PTRS) || defined(MAKE_BACK_GRAPH) + (*(word *)base & 1) != 0 && +# endif + GC_has_other_debug_info(base) >= 0) + return TRUE; /* object has leaked */ + + /* Validate freed object's content. */ + p = (word *)(base + sizeof(oh)); + obj_sz = BYTES_TO_WORDS(HDR(base)->hb_sz - sizeof(oh)); + for (i = 0; i < obj_sz; ++i) + if (p[i] != GC_FREED_MEM_MARKER) { + GC_set_mark_bit(base); /* do not reclaim it in this cycle */ + GC_add_smashed((ptr_t)(&p[i])); /* alter-after-free detected */ + break; /* don't report any other smashed locations in the object */ + } + + return FALSE; /* GC_debug_free() has been called */ +} + +#endif /* !SHORT_DBG_HDRS */ + +#ifndef GC_NO_FINALIZATION + +struct closure { + GC_finalization_proc cl_fn; + void * cl_data; +}; + +STATIC void * GC_make_closure(GC_finalization_proc fn, void * data) +{ + struct closure * result = +# ifdef DBG_HDRS_ALL + (struct closure *) GC_debug_malloc(sizeof (struct closure), + GC_EXTRAS); +# else + (struct closure *) GC_malloc(sizeof (struct closure)); +# endif + if (result != 0) { + result -> cl_fn = fn; + result -> cl_data = data; + } + return((void *)result); +} + +/* An auxiliary fns to make finalization work correctly with displaced */ +/* pointers introduced by the debugging allocators. */ +STATIC void GC_CALLBACK GC_debug_invoke_finalizer(void * obj, void * data) +{ + struct closure * cl = (struct closure *) data; + (*(cl -> cl_fn))((void *)((char *)obj + sizeof(oh)), cl -> cl_data); +} + +/* Special finalizer_proc value to detect GC_register_finalizer() failure. */ +#define OFN_UNSET ((GC_finalization_proc)~(signed_word)0) + +/* Set ofn and ocd to reflect the values we got back. */ +static void store_old(void *obj, GC_finalization_proc my_old_fn, + struct closure *my_old_cd, GC_finalization_proc *ofn, + void **ocd) +{ + if (0 != my_old_fn) { + if (my_old_fn == OFN_UNSET) { + /* register_finalizer() failed; (*ofn) and (*ocd) are unchanged. */ + return; + } + if (my_old_fn != GC_debug_invoke_finalizer) { + GC_err_printf("Debuggable object at %p had a non-debug finalizer\n", + obj); + /* This should probably be fatal. */ + } else { + if (ofn) *ofn = my_old_cd -> cl_fn; + if (ocd) *ocd = my_old_cd -> cl_data; + } + } else { + if (ofn) *ofn = 0; + if (ocd) *ocd = 0; + } +} + +GC_API void GC_CALL GC_debug_register_finalizer(void * obj, + GC_finalization_proc fn, + void * cd, GC_finalization_proc *ofn, + void * *ocd) +{ + GC_finalization_proc my_old_fn = OFN_UNSET; + void * my_old_cd; + ptr_t base = GC_base(obj); + if (0 == base) { + /* We won't collect it, hence finalizer wouldn't be run. */ + if (ocd) *ocd = 0; + if (ofn) *ofn = 0; + return; + } + if ((ptr_t)obj - base != sizeof(oh)) { + GC_err_printf("GC_debug_register_finalizer called with" + " non-base-pointer %p\n", obj); + } + if (0 == fn) { + GC_register_finalizer(base, 0, 0, &my_old_fn, &my_old_cd); + } else { + cd = GC_make_closure(fn, cd); + if (cd == 0) return; /* out of memory */ + GC_register_finalizer(base, GC_debug_invoke_finalizer, + cd, &my_old_fn, &my_old_cd); + } + store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd); +} + +GC_API void GC_CALL GC_debug_register_finalizer_no_order + (void * obj, GC_finalization_proc fn, + void * cd, GC_finalization_proc *ofn, + void * *ocd) +{ + GC_finalization_proc my_old_fn = OFN_UNSET; + void * my_old_cd; + ptr_t base = GC_base(obj); + if (0 == base) { + /* We won't collect it, hence finalizer wouldn't be run. */ + if (ocd) *ocd = 0; + if (ofn) *ofn = 0; + return; + } + if ((ptr_t)obj - base != sizeof(oh)) { + GC_err_printf("GC_debug_register_finalizer_no_order called with" + " non-base-pointer %p\n", obj); + } + if (0 == fn) { + GC_register_finalizer_no_order(base, 0, 0, &my_old_fn, &my_old_cd); + } else { + cd = GC_make_closure(fn, cd); + if (cd == 0) return; /* out of memory */ + GC_register_finalizer_no_order(base, GC_debug_invoke_finalizer, + cd, &my_old_fn, &my_old_cd); + } + store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd); +} + +GC_API void GC_CALL GC_debug_register_finalizer_unreachable + (void * obj, GC_finalization_proc fn, + void * cd, GC_finalization_proc *ofn, + void * *ocd) +{ + GC_finalization_proc my_old_fn = OFN_UNSET; + void * my_old_cd; + ptr_t base = GC_base(obj); + if (0 == base) { + /* We won't collect it, hence finalizer wouldn't be run. */ + if (ocd) *ocd = 0; + if (ofn) *ofn = 0; + return; + } + if ((ptr_t)obj - base != sizeof(oh)) { + GC_err_printf("GC_debug_register_finalizer_unreachable called with" + " non-base-pointer %p\n", obj); + } + if (0 == fn) { + GC_register_finalizer_unreachable(base, 0, 0, &my_old_fn, &my_old_cd); + } else { + cd = GC_make_closure(fn, cd); + if (cd == 0) return; /* out of memory */ + GC_register_finalizer_unreachable(base, GC_debug_invoke_finalizer, + cd, &my_old_fn, &my_old_cd); + } + store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd); +} + +GC_API void GC_CALL GC_debug_register_finalizer_ignore_self + (void * obj, GC_finalization_proc fn, + void * cd, GC_finalization_proc *ofn, + void * *ocd) +{ + GC_finalization_proc my_old_fn = OFN_UNSET; + void * my_old_cd; + ptr_t base = GC_base(obj); + if (0 == base) { + /* We won't collect it, hence finalizer wouldn't be run. */ + if (ocd) *ocd = 0; + if (ofn) *ofn = 0; + return; + } + if ((ptr_t)obj - base != sizeof(oh)) { + GC_err_printf("GC_debug_register_finalizer_ignore_self called with" + " non-base-pointer %p\n", obj); + } + if (0 == fn) { + GC_register_finalizer_ignore_self(base, 0, 0, &my_old_fn, &my_old_cd); + } else { + cd = GC_make_closure(fn, cd); + if (cd == 0) return; /* out of memory */ + GC_register_finalizer_ignore_self(base, GC_debug_invoke_finalizer, + cd, &my_old_fn, &my_old_cd); + } + store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd); +} + +#endif /* !GC_NO_FINALIZATION */ + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_malloc_replacement(size_t lb) +{ + return GC_debug_malloc(lb, GC_DBG_EXTRAS); +} + +GC_API void * GC_CALL GC_debug_realloc_replacement(void *p, size_t lb) +{ + return GC_debug_realloc(p, lb, GC_DBG_EXTRAS); +} diff --git a/depcomp b/depcomp new file mode 100755 index 0000000..fc98710 --- /dev/null +++ b/depcomp @@ -0,0 +1,791 @@ +#! /bin/sh +# depcomp - compile a program generating dependencies as side-effects + +scriptversion=2013-05-30.07; # UTC + +# Copyright (C) 1999-2014 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that program. + +# Originally written by Alexandre Oliva . + +case $1 in + '') + echo "$0: No command. Try '$0 --help' for more information." 1>&2 + exit 1; + ;; + -h | --h*) + cat <<\EOF +Usage: depcomp [--help] [--version] PROGRAM [ARGS] + +Run PROGRAMS ARGS to compile a file, generating dependencies +as side-effects. + +Environment variables: + depmode Dependency tracking mode. + source Source file read by 'PROGRAMS ARGS'. + object Object file output by 'PROGRAMS ARGS'. + DEPDIR directory where to store dependencies. + depfile Dependency file to output. + tmpdepfile Temporary file to use when outputting dependencies. + libtool Whether libtool is used (yes/no). + +Report bugs to . +EOF + exit $? + ;; + -v | --v*) + echo "depcomp $scriptversion" + exit $? + ;; +esac + +# Get the directory component of the given path, and save it in the +# global variables '$dir'. Note that this directory component will +# be either empty or ending with a '/' character. This is deliberate. +set_dir_from () +{ + case $1 in + */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;; + *) dir=;; + esac +} + +# Get the suffix-stripped basename of the given path, and save it the +# global variable '$base'. +set_base_from () +{ + base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'` +} + +# If no dependency file was actually created by the compiler invocation, +# we still have to create a dummy depfile, to avoid errors with the +# Makefile "include basename.Plo" scheme. +make_dummy_depfile () +{ + echo "#dummy" > "$depfile" +} + +# Factor out some common post-processing of the generated depfile. +# Requires the auxiliary global variable '$tmpdepfile' to be set. +aix_post_process_depfile () +{ + # If the compiler actually managed to produce a dependency file, + # post-process it. + if test -f "$tmpdepfile"; then + # Each line is of the form 'foo.o: dependency.h'. + # Do two passes, one to just change these to + # $object: dependency.h + # and one to simply output + # dependency.h: + # which is needed to avoid the deleted-header problem. + { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile" + sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile" + } > "$depfile" + rm -f "$tmpdepfile" + else + make_dummy_depfile + fi +} + +# A tabulation character. +tab=' ' +# A newline character. +nl=' +' +# Character ranges might be problematic outside the C locale. +# These definitions help. +upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ +lower=abcdefghijklmnopqrstuvwxyz +digits=0123456789 +alpha=${upper}${lower} + +if test -z "$depmode" || test -z "$source" || test -z "$object"; then + echo "depcomp: Variables source, object and depmode must be set" 1>&2 + exit 1 +fi + +# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po. +depfile=${depfile-`echo "$object" | + sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`} +tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`} + +rm -f "$tmpdepfile" + +# Avoid interferences from the environment. +gccflag= dashmflag= + +# Some modes work just like other modes, but use different flags. We +# parameterize here, but still list the modes in the big case below, +# to make depend.m4 easier to write. Note that we *cannot* use a case +# here, because this file can only contain one case statement. +if test "$depmode" = hp; then + # HP compiler uses -M and no extra arg. + gccflag=-M + depmode=gcc +fi + +if test "$depmode" = dashXmstdout; then + # This is just like dashmstdout with a different argument. + dashmflag=-xM + depmode=dashmstdout +fi + +cygpath_u="cygpath -u -f -" +if test "$depmode" = msvcmsys; then + # This is just like msvisualcpp but w/o cygpath translation. + # Just convert the backslash-escaped backslashes to single forward + # slashes to satisfy depend.m4 + cygpath_u='sed s,\\\\,/,g' + depmode=msvisualcpp +fi + +if test "$depmode" = msvc7msys; then + # This is just like msvc7 but w/o cygpath translation. + # Just convert the backslash-escaped backslashes to single forward + # slashes to satisfy depend.m4 + cygpath_u='sed s,\\\\,/,g' + depmode=msvc7 +fi + +if test "$depmode" = xlc; then + # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information. + gccflag=-qmakedep=gcc,-MF + depmode=gcc +fi + +case "$depmode" in +gcc3) +## gcc 3 implements dependency tracking that does exactly what +## we want. Yay! Note: for some reason libtool 1.4 doesn't like +## it if -MD -MP comes after the -MF stuff. Hmm. +## Unfortunately, FreeBSD c89 acceptance of flags depends upon +## the command line argument order; so add the flags where they +## appear in depend2.am. Note that the slowdown incurred here +## affects only configure: in makefiles, %FASTDEP% shortcuts this. + for arg + do + case $arg in + -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;; + *) set fnord "$@" "$arg" ;; + esac + shift # fnord + shift # $arg + done + "$@" + stat=$? + if test $stat -ne 0; then + rm -f "$tmpdepfile" + exit $stat + fi + mv "$tmpdepfile" "$depfile" + ;; + +gcc) +## Note that this doesn't just cater to obsosete pre-3.x GCC compilers. +## but also to in-use compilers like IMB xlc/xlC and the HP C compiler. +## (see the conditional assignment to $gccflag above). +## There are various ways to get dependency output from gcc. Here's +## why we pick this rather obscure method: +## - Don't want to use -MD because we'd like the dependencies to end +## up in a subdir. Having to rename by hand is ugly. +## (We might end up doing this anyway to support other compilers.) +## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like +## -MM, not -M (despite what the docs say). Also, it might not be +## supported by the other compilers which use the 'gcc' depmode. +## - Using -M directly means running the compiler twice (even worse +## than renaming). + if test -z "$gccflag"; then + gccflag=-MD, + fi + "$@" -Wp,"$gccflag$tmpdepfile" + stat=$? + if test $stat -ne 0; then + rm -f "$tmpdepfile" + exit $stat + fi + rm -f "$depfile" + echo "$object : \\" > "$depfile" + # The second -e expression handles DOS-style file names with drive + # letters. + sed -e 's/^[^:]*: / /' \ + -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile" +## This next piece of magic avoids the "deleted header file" problem. +## The problem is that when a header file which appears in a .P file +## is deleted, the dependency causes make to die (because there is +## typically no way to rebuild the header). We avoid this by adding +## dummy dependencies for each header file. Too bad gcc doesn't do +## this for us directly. +## Some versions of gcc put a space before the ':'. On the theory +## that the space means something, we add a space to the output as +## well. hp depmode also adds that space, but also prefixes the VPATH +## to the object. Take care to not repeat it in the output. +## Some versions of the HPUX 10.20 sed can't process this invocation +## correctly. Breaking it into two sed invocations is a workaround. + tr ' ' "$nl" < "$tmpdepfile" \ + | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \ + | sed -e 's/$/ :/' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +hp) + # This case exists only to let depend.m4 do its work. It works by + # looking at the text of this script. This case will never be run, + # since it is checked for above. + exit 1 + ;; + +sgi) + if test "$libtool" = yes; then + "$@" "-Wp,-MDupdate,$tmpdepfile" + else + "$@" -MDupdate "$tmpdepfile" + fi + stat=$? + if test $stat -ne 0; then + rm -f "$tmpdepfile" + exit $stat + fi + rm -f "$depfile" + + if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files + echo "$object : \\" > "$depfile" + # Clip off the initial element (the dependent). Don't try to be + # clever and replace this with sed code, as IRIX sed won't handle + # lines with more than a fixed number of characters (4096 in + # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines; + # the IRIX cc adds comments like '#:fec' to the end of the + # dependency line. + tr ' ' "$nl" < "$tmpdepfile" \ + | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \ + | tr "$nl" ' ' >> "$depfile" + echo >> "$depfile" + # The second pass generates a dummy entry for each header file. + tr ' ' "$nl" < "$tmpdepfile" \ + | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \ + >> "$depfile" + else + make_dummy_depfile + fi + rm -f "$tmpdepfile" + ;; + +xlc) + # This case exists only to let depend.m4 do its work. It works by + # looking at the text of this script. This case will never be run, + # since it is checked for above. + exit 1 + ;; + +aix) + # The C for AIX Compiler uses -M and outputs the dependencies + # in a .u file. In older versions, this file always lives in the + # current directory. Also, the AIX compiler puts '$object:' at the + # start of each line; $object doesn't have directory information. + # Version 6 uses the directory in both cases. + set_dir_from "$object" + set_base_from "$object" + if test "$libtool" = yes; then + tmpdepfile1=$dir$base.u + tmpdepfile2=$base.u + tmpdepfile3=$dir.libs/$base.u + "$@" -Wc,-M + else + tmpdepfile1=$dir$base.u + tmpdepfile2=$dir$base.u + tmpdepfile3=$dir$base.u + "$@" -M + fi + stat=$? + if test $stat -ne 0; then + rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" + exit $stat + fi + + for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" + do + test -f "$tmpdepfile" && break + done + aix_post_process_depfile + ;; + +tcc) + # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26 + # FIXME: That version still under development at the moment of writing. + # Make that this statement remains true also for stable, released + # versions. + # It will wrap lines (doesn't matter whether long or short) with a + # trailing '\', as in: + # + # foo.o : \ + # foo.c \ + # foo.h \ + # + # It will put a trailing '\' even on the last line, and will use leading + # spaces rather than leading tabs (at least since its commit 0394caf7 + # "Emit spaces for -MD"). + "$@" -MD -MF "$tmpdepfile" + stat=$? + if test $stat -ne 0; then + rm -f "$tmpdepfile" + exit $stat + fi + rm -f "$depfile" + # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'. + # We have to change lines of the first kind to '$object: \'. + sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile" + # And for each line of the second kind, we have to emit a 'dep.h:' + # dummy dependency, to avoid the deleted-header problem. + sed -n -e 's|^ *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile" + rm -f "$tmpdepfile" + ;; + +## The order of this option in the case statement is important, since the +## shell code in configure will try each of these formats in the order +## listed in this file. A plain '-MD' option would be understood by many +## compilers, so we must ensure this comes after the gcc and icc options. +pgcc) + # Portland's C compiler understands '-MD'. + # Will always output deps to 'file.d' where file is the root name of the + # source file under compilation, even if file resides in a subdirectory. + # The object file name does not affect the name of the '.d' file. + # pgcc 10.2 will output + # foo.o: sub/foo.c sub/foo.h + # and will wrap long lines using '\' : + # foo.o: sub/foo.c ... \ + # sub/foo.h ... \ + # ... + set_dir_from "$object" + # Use the source, not the object, to determine the base name, since + # that's sadly what pgcc will do too. + set_base_from "$source" + tmpdepfile=$base.d + + # For projects that build the same source file twice into different object + # files, the pgcc approach of using the *source* file root name can cause + # problems in parallel builds. Use a locking strategy to avoid stomping on + # the same $tmpdepfile. + lockdir=$base.d-lock + trap " + echo '$0: caught signal, cleaning up...' >&2 + rmdir '$lockdir' + exit 1 + " 1 2 13 15 + numtries=100 + i=$numtries + while test $i -gt 0; do + # mkdir is a portable test-and-set. + if mkdir "$lockdir" 2>/dev/null; then + # This process acquired the lock. + "$@" -MD + stat=$? + # Release the lock. + rmdir "$lockdir" + break + else + # If the lock is being held by a different process, wait + # until the winning process is done or we timeout. + while test -d "$lockdir" && test $i -gt 0; do + sleep 1 + i=`expr $i - 1` + done + fi + i=`expr $i - 1` + done + trap - 1 2 13 15 + if test $i -le 0; then + echo "$0: failed to acquire lock after $numtries attempts" >&2 + echo "$0: check lockdir '$lockdir'" >&2 + exit 1 + fi + + if test $stat -ne 0; then + rm -f "$tmpdepfile" + exit $stat + fi + rm -f "$depfile" + # Each line is of the form `foo.o: dependent.h', + # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'. + # Do two passes, one to just change these to + # `$object: dependent.h' and one to simply `dependent.h:'. + sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile" + # Some versions of the HPUX 10.20 sed can't process this invocation + # correctly. Breaking it into two sed invocations is a workaround. + sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \ + | sed -e 's/$/ :/' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +hp2) + # The "hp" stanza above does not work with aCC (C++) and HP's ia64 + # compilers, which have integrated preprocessors. The correct option + # to use with these is +Maked; it writes dependencies to a file named + # 'foo.d', which lands next to the object file, wherever that + # happens to be. + # Much of this is similar to the tru64 case; see comments there. + set_dir_from "$object" + set_base_from "$object" + if test "$libtool" = yes; then + tmpdepfile1=$dir$base.d + tmpdepfile2=$dir.libs/$base.d + "$@" -Wc,+Maked + else + tmpdepfile1=$dir$base.d + tmpdepfile2=$dir$base.d + "$@" +Maked + fi + stat=$? + if test $stat -ne 0; then + rm -f "$tmpdepfile1" "$tmpdepfile2" + exit $stat + fi + + for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" + do + test -f "$tmpdepfile" && break + done + if test -f "$tmpdepfile"; then + sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile" + # Add 'dependent.h:' lines. + sed -ne '2,${ + s/^ *// + s/ \\*$// + s/$/:/ + p + }' "$tmpdepfile" >> "$depfile" + else + make_dummy_depfile + fi + rm -f "$tmpdepfile" "$tmpdepfile2" + ;; + +tru64) + # The Tru64 compiler uses -MD to generate dependencies as a side + # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'. + # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put + # dependencies in 'foo.d' instead, so we check for that too. + # Subdirectories are respected. + set_dir_from "$object" + set_base_from "$object" + + if test "$libtool" = yes; then + # Libtool generates 2 separate objects for the 2 libraries. These + # two compilations output dependencies in $dir.libs/$base.o.d and + # in $dir$base.o.d. We have to check for both files, because + # one of the two compilations can be disabled. We should prefer + # $dir$base.o.d over $dir.libs/$base.o.d because the latter is + # automatically cleaned when .libs/ is deleted, while ignoring + # the former would cause a distcleancheck panic. + tmpdepfile1=$dir$base.o.d # libtool 1.5 + tmpdepfile2=$dir.libs/$base.o.d # Likewise. + tmpdepfile3=$dir.libs/$base.d # Compaq CCC V6.2-504 + "$@" -Wc,-MD + else + tmpdepfile1=$dir$base.d + tmpdepfile2=$dir$base.d + tmpdepfile3=$dir$base.d + "$@" -MD + fi + + stat=$? + if test $stat -ne 0; then + rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" + exit $stat + fi + + for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" + do + test -f "$tmpdepfile" && break + done + # Same post-processing that is required for AIX mode. + aix_post_process_depfile + ;; + +msvc7) + if test "$libtool" = yes; then + showIncludes=-Wc,-showIncludes + else + showIncludes=-showIncludes + fi + "$@" $showIncludes > "$tmpdepfile" + stat=$? + grep -v '^Note: including file: ' "$tmpdepfile" + if test $stat -ne 0; then + rm -f "$tmpdepfile" + exit $stat + fi + rm -f "$depfile" + echo "$object : \\" > "$depfile" + # The first sed program below extracts the file names and escapes + # backslashes for cygpath. The second sed program outputs the file + # name when reading, but also accumulates all include files in the + # hold buffer in order to output them again at the end. This only + # works with sed implementations that can handle large buffers. + sed < "$tmpdepfile" -n ' +/^Note: including file: *\(.*\)/ { + s//\1/ + s/\\/\\\\/g + p +}' | $cygpath_u | sort -u | sed -n ' +s/ /\\ /g +s/\(.*\)/'"$tab"'\1 \\/p +s/.\(.*\) \\/\1:/ +H +$ { + s/.*/'"$tab"'/ + G + p +}' >> "$depfile" + echo >> "$depfile" # make sure the fragment doesn't end with a backslash + rm -f "$tmpdepfile" + ;; + +msvc7msys) + # This case exists only to let depend.m4 do its work. It works by + # looking at the text of this script. This case will never be run, + # since it is checked for above. + exit 1 + ;; + +#nosideeffect) + # This comment above is used by automake to tell side-effect + # dependency tracking mechanisms from slower ones. + +dashmstdout) + # Important note: in order to support this mode, a compiler *must* + # always write the preprocessed file to stdout, regardless of -o. + "$@" || exit $? + + # Remove the call to Libtool. + if test "$libtool" = yes; then + while test "X$1" != 'X--mode=compile'; do + shift + done + shift + fi + + # Remove '-o $object'. + IFS=" " + for arg + do + case $arg in + -o) + shift + ;; + $object) + shift + ;; + *) + set fnord "$@" "$arg" + shift # fnord + shift # $arg + ;; + esac + done + + test -z "$dashmflag" && dashmflag=-M + # Require at least two characters before searching for ':' + # in the target name. This is to cope with DOS-style filenames: + # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise. + "$@" $dashmflag | + sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile" + rm -f "$depfile" + cat < "$tmpdepfile" > "$depfile" + # Some versions of the HPUX 10.20 sed can't process this sed invocation + # correctly. Breaking it into two sed invocations is a workaround. + tr ' ' "$nl" < "$tmpdepfile" \ + | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \ + | sed -e 's/$/ :/' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +dashXmstdout) + # This case only exists to satisfy depend.m4. It is never actually + # run, as this mode is specially recognized in the preamble. + exit 1 + ;; + +makedepend) + "$@" || exit $? + # Remove any Libtool call + if test "$libtool" = yes; then + while test "X$1" != 'X--mode=compile'; do + shift + done + shift + fi + # X makedepend + shift + cleared=no eat=no + for arg + do + case $cleared in + no) + set ""; shift + cleared=yes ;; + esac + if test $eat = yes; then + eat=no + continue + fi + case "$arg" in + -D*|-I*) + set fnord "$@" "$arg"; shift ;; + # Strip any option that makedepend may not understand. Remove + # the object too, otherwise makedepend will parse it as a source file. + -arch) + eat=yes ;; + -*|$object) + ;; + *) + set fnord "$@" "$arg"; shift ;; + esac + done + obj_suffix=`echo "$object" | sed 's/^.*\././'` + touch "$tmpdepfile" + ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@" + rm -f "$depfile" + # makedepend may prepend the VPATH from the source file name to the object. + # No need to regex-escape $object, excess matching of '.' is harmless. + sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile" + # Some versions of the HPUX 10.20 sed can't process the last invocation + # correctly. Breaking it into two sed invocations is a workaround. + sed '1,2d' "$tmpdepfile" \ + | tr ' ' "$nl" \ + | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \ + | sed -e 's/$/ :/' >> "$depfile" + rm -f "$tmpdepfile" "$tmpdepfile".bak + ;; + +cpp) + # Important note: in order to support this mode, a compiler *must* + # always write the preprocessed file to stdout. + "$@" || exit $? + + # Remove the call to Libtool. + if test "$libtool" = yes; then + while test "X$1" != 'X--mode=compile'; do + shift + done + shift + fi + + # Remove '-o $object'. + IFS=" " + for arg + do + case $arg in + -o) + shift + ;; + $object) + shift + ;; + *) + set fnord "$@" "$arg" + shift # fnord + shift # $arg + ;; + esac + done + + "$@" -E \ + | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \ + -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \ + | sed '$ s: \\$::' > "$tmpdepfile" + rm -f "$depfile" + echo "$object : \\" > "$depfile" + cat < "$tmpdepfile" >> "$depfile" + sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +msvisualcpp) + # Important note: in order to support this mode, a compiler *must* + # always write the preprocessed file to stdout. + "$@" || exit $? + + # Remove the call to Libtool. + if test "$libtool" = yes; then + while test "X$1" != 'X--mode=compile'; do + shift + done + shift + fi + + IFS=" " + for arg + do + case "$arg" in + -o) + shift + ;; + $object) + shift + ;; + "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI") + set fnord "$@" + shift + shift + ;; + *) + set fnord "$@" "$arg" + shift + shift + ;; + esac + done + "$@" -E 2>/dev/null | + sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile" + rm -f "$depfile" + echo "$object : \\" > "$depfile" + sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile" + echo "$tab" >> "$depfile" + sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +msvcmsys) + # This case exists only to let depend.m4 do its work. It works by + # looking at the text of this script. This case will never be run, + # since it is checked for above. + exit 1 + ;; + +none) + exec "$@" + ;; + +*) + echo "Unknown depmode $depmode" 1>&2 + exit 1 + ;; +esac + +exit 0 + +# Local Variables: +# mode: shell-script +# sh-indentation: 2 +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "scriptversion=" +# time-stamp-format: "%:y-%02m-%02d.%02H" +# time-stamp-time-zone: "UTC" +# time-stamp-end: "; # UTC" +# End: diff --git a/digimars.mak b/digimars.mak new file mode 100644 index 0000000..7c75eb4 --- /dev/null +++ b/digimars.mak @@ -0,0 +1,92 @@ +# Makefile to build Hans Boehm garbage collector using the Digital Mars +# compiler from www.digitalmars.com +# Written by Walter Bright + + +DEFINES=-DNDEBUG -D_WINDOWS -DGC_DLL -DALL_INTERIOR_POINTERS -DWIN32_THREADS +CFLAGS=-Iinclude $(DEFINES) -wx -g +LFLAGS=/ma/implib/co +CC=sc + +.c.obj: + $(CC) -c $(CFLAGS) $* + +.cpp.obj: + $(CC) -c $(CFLAGS) -Aa $* + +OBJS= \ + allchblk.obj\ + alloc.obj\ + blacklst.obj\ + checksums.obj\ + dbg_mlc.obj\ + fnlz_mlc.obj\ + dyn_load.obj\ + finalize.obj\ + gc_cpp.obj\ + headers.obj\ + mach_dep.obj\ + malloc.obj\ + mallocx.obj\ + mark.obj\ + mark_rts.obj\ + misc.obj\ + new_hblk.obj\ + obj_map.obj\ + os_dep.obj\ + ptr_chck.obj\ + reclaim.obj\ + stubborn.obj\ + typd_mlc.obj\ + win32_threads.obj + +targets: gc.dll gc.lib gctest.exe + +gc.dll: $(OBJS) gc.def digimars.mak + sc -ogc.dll $(OBJS) -L$(LFLAGS) gc.def kernel32.lib user32.lib + +gc.def: digimars.mak + echo LIBRARY GC >gc.def + echo DESCRIPTION "Hans Boehm Garbage Collector" >>gc.def + echo EXETYPE NT >>gc.def + echo EXPORTS >>gc.def + echo GC_is_visible_print_proc >>gc.def + echo GC_is_valid_displacement_print_proc >>gc.def + +clean: + del gc.def + del $(OBJS) + + +gctest.exe : gc.lib tests\test.obj + sc -ogctest.exe tests\test.obj gc.lib + +tests\test.obj : tests\test.c + $(CC) -c -g -DNDEBUG -D_WINDOWS -DGC_DLL \ + -DALL_INTERIOR_POINTERS -DWIN32_THREADS \ + -Iinclude tests\test.c -otests\test.obj + +allchblk.obj: allchblk.c +alloc.obj: alloc.c +blacklst.obj: blacklst.c +checksums.obj: checksums.c +dbg_mlc.obj: dbg_mlc.c +dyn_load.obj: dyn_load.c +finalize.obj: finalize.c +fnlz_mlc.obj: fnlz_mlc.c +gc_cpp.obj: gc_cpp.cpp +headers.obj: headers.c +mach_dep.obj: mach_dep.c +malloc.obj: malloc.c +mallocx.obj: mallocx.c +mark.obj: mark.c +mark_rts.obj: mark_rts.c +misc.obj: misc.c +new_hblk.obj: new_hblk.c +obj_map.obj: obj_map.c +os_dep.obj: os_dep.c +ptr_chck.obj: ptr_chck.c +reclaim.obj: reclaim.c +stubborn.obj: stubborn.c +typd_mlc.obj: typd_mlc.c +win32_threads.obj: win32_threads.c diff --git a/doc/README.DGUX386 b/doc/README.DGUX386 new file mode 100644 index 0000000..2683f14 --- /dev/null +++ b/doc/README.DGUX386 @@ -0,0 +1,39 @@ + Garbage Collector (parallel version) for x86 DG/UX Release R4.20MU07 + + + *READ* the file README.QUICK. + + You need the GCC-3.0.3 rev (DG/UX) compiler to build this tree. + This compiler has the new "dgux386" threads package implemented. + It also supports the switch "-pthread" needed to link correctly + the DG/UX's -lrte -lthread with -lgcc and the system's -lc. + Finally, we support parallel mark for the SMP DG/UX machines. + To build the garbage collector do: + + ./configure --enable-parallel-mark + make + make gctest + + Before you run "gctest" you need to set your LD_LIBRARY_PATH + correctly so that "gctest" can find the shared library libgc. + Alternatively you can do a configuration + + ./configure --enable-parallel-mark --disable-shared + + to build only the static version of libgc. + + To enable debugging messages please do: + 1) Add the "--enable-gc-debug" flag during configuration. + 2) Pass "CFLAGS=-DDEBUG_THREADS" to "make". + + In a machine with 4 CPUs (my own machine) the option parallel + mark (aka --enable-parallel-mark) makes a BIG difference. + + Takis Psarogiannakopoulos + +Note (HB): + The integration of this patch is currently not complete. + The following patches against 6.1alpha3 where hard to move + to alpha4, and are not integrated. There may also be minor + problems with stylistic corrections made by me. +[The diff for ltconfig and ltmain.sh was removed from this file on 2011-08-22] diff --git a/doc/README.Mac b/doc/README.Mac new file mode 100644 index 0000000..aea1d17 --- /dev/null +++ b/doc/README.Mac @@ -0,0 +1,363 @@ +The contents of this file are old and pertain to pre-MacOSX versions. +You probably really wanted README.darwin. + +--------------------------------------------- + +Patrick Beard's Notes for building GC v4.12 with CodeWarrior Pro 2: +---------------------------------------------------------------------------- +The current build environment for the collector is CodeWarrior Pro 2. +Projects for CodeWarrior Pro 2 (and for quite a few older versions) +are distributed in the file Mac_projects.sit.hqx. The project file +:Mac_projects:gc.prj builds static library versions of the collector. +:Mac_projects:gctest.prj builds the GC test suite. + +Configuring the collector is still done by editing the file +:extra:Mac_files:MacOS_config.h. + +Lars Farm's suggestions on building the collector: +---------------------------------------------------------------------------- +Garbage Collection on MacOS - a manual 'MakeFile' +------------------------------------------------- + +Project files and IDE's are great on the Macintosh, but they do have +problems when used as distribution media. This note tries to provide +porting instructions in pure TEXT form to avoid those problems. A manual +'makefile' if you like. + + GC version: 4.12a2 + Codewarrior: CWPro1 + date: 18 July 1997 + +The notes may or may not apply to earlier or later versions of the +GC/CWPro. Actually, they do apply to earlier versions of both except that +until recently a project could only build one target so each target was a +separate project. The notes will most likely apply to future versions too. +Possibly with minor tweaks. + +This is just to record my experiences. These notes do not mean I now +provide a supported port of the GC to MacOS. It works for me. If it works +for you, great. If it doesn't, sorry, try again...;-) Still, if you find +errors, please let me know. + + +Porting to MacOS is a bit more complex than it first seems. Which MacOS? +68K/PowerPC? Which compiler? Each supports both 68K and PowerPC and offer a +large number of (unique to each environment) compiler settings. Each +combination of compiler/68K/PPC/settings require a unique combination of +standard libraries. And the IDE's does not select them for you. They don't +even check that the library is built with compatible setting and this is +the major source of problems when porting the GC (and otherwise too). + +You will have to make choices when you configure the GC. I've made some +choices here, but there are other combinations of settings and #defines +that work too. + +As for target settings the major obstacles may be: +- 68K Processor: check "4-byte Ints". +- PPC Processor: uncheck "Store Static Data in TOC". + +What you need to do: +1) Build the GC as a library +2) Test that the library works with 'test.c'. +3) Test that the C++ interface 'gc_cpp.cc/h' works with 'test_cpp.cc'. + +== 1. The Libraries == + +I made one project with four targets (68K/PPC tempmem or appheap). One target +will suffice if you're able to decide which one you want. I wasn't... + +Codewarrior allows a large number of compiler/linker settings. I used these: + +Settings shared by all targets: +------------------------------ +o Access Paths: + - User Paths: the GC folder + - System Paths: {Compiler}:Metrowerks Standard Library: + {Compiler}:MacOS Support:Headers: + {Compiler}:MacOS Support:MacHeaders: +o C/C++ language: + - inlining: normal + - direct to SOM: off + - enable/check: exceptions, RTTI, bool (and if you like pool strings) + +PowerPC target settings +----------------------- +o Target Settings: + - name of target + - MacOS PPC Linker +o PPC Target + - name of library +o C/C++ language + - prefix file as described below +o PPC Processor + - Struct Alignment: PowerPC + - uncheck "Store Static Data in TOC" -- important! + I don't think the others matter, I use full optimization and it is OK +o PPC Linker + - Factory Settings (SYM file with full paths, faster linking, dead-strip + static init, Main: __start) + + +68K target settings +------------------- +o Target Settings: + - name of target + - MacOS 68K Linker +o 68K Target + - name of library + - A5 relative data +o C/C++ language + - prefix file as described below +o 68K Processor + - Code model: smart + - Struct alignment: 68K + - FP: SANE + - enable 4-Byte Ints -- important! + I don't think the others matter. I selected... + - enable: 68020 + - enable: global register allocation +o IR Optimizer + - enable: Optimize Space, Optimize Speed + I suppose the others would work too, but haven't tried... +o 68K Linker + - Factory Settings (New Style MacsBug, SYM file with full paths, + A6 Frames, fast link, Merge compiler glue into segment 1, + dead-strip static init) + +Prefix Files to configure the GC sources +---------------------------------------- +The Codewarrior equivalent of command-line compilers -DNAME=X is to use +prefix-files. A TEXT file that is automatically #included before the first byte +of every source file. I used these: + +---- ( cut here ) ---- gc_prefix_tempmem.h -- 68K and PPC ----- + #include "gc_prefix_common.h" + #undef USE_TEMPORARY_MEMORY + #define USE_TEMPORARY_MEMORY +---- ( cut here ) ---- gc_prefix_appmem.h -- 68K and PPC ----- + #include "gc_prefix_common.h" + #undef USE_TEMPORARY_MEMORY +// #define USE_TEMPORARY_MEMORY + +---- ( cut here ) ---- gc_prefix_common.h -------------------- +// gc_prefix_common.h +// ------------------ +// Codewarrior prefix file to configure the GC libraries +// +// prefix files are the Codewarrior equivalent of the +// command line option -Dname=x frequently seen in makefiles + +#if !__MWERKS__ + #error only tried this with Codewarrior +#endif + +#if macintosh + #define MSL_USE_PRECOMPILED_HEADERS 0 + #include + + // See list of #defines to configure the library in: 'MakeFile' + // see also README + + #define ALL_INTERIOR_POINTERS // follows interior pointers. +//#define DONT_ADD_BYTE_AT_END // disables the padding if defined. +//#define SMALL_CONFIG // whether to use a smaller heap. + #define GC_ATOMIC_UNCOLLECTABLE // GC_malloc_atomic_uncollectable() + + // define either or none as per personal preference + // used in malloc.c + #define REDIRECT_MALLOC GC_malloc +//#define REDIRECT_MALLOC GC_malloc_uncollectable + // if REDIRECT_MALLOC is #defined make sure that the GC library + // is listed before the ANSI/ISO libs in the Codewarrior + // 'Link order' panel +//#define IGNORE_FREE + + // mac specific configs +//#define USE_TEMPORARY_MEMORY // use Macintosh temporary memory. +//#define SHARED_LIBRARY_BUILD // build for use in a shared library. + +#else + // could build Win32 here too, or in the future + // Rhapsody PPC-mach, Rhapsody PPC-MacOS, + // Rhapsody Intel-mach, Rhapsody Intel-Win32,... + // ... ugh this will get messy ... +#endif + +// make sure ints are at least 32-bit +// ( could be set to 16-bit by compiler settings (68K) ) + +struct gc_private_assert_intsize_{ char x[ sizeof(int)>=4 ? 1 : 0 ]; }; + +#if __powerc + #if __option(toc_data) + #error turn off "store static data in TOC" when using GC + // ... or find a way to add TOC to the root set...(?) + #endif +#endif +---- ( cut here ) ---- end of gc_prefix_common.h ----------------- + +Files to build the GC libraries: +-------------------------------- + allchblk.c + alloc.c + blacklst.c + checksums.c + dbg_mlc.c + finalize.c + headers.c + mach_dep.c + MacOS.c -- contains MacOS code + malloc.c + mallocx.c + mark.c + mark_rts.c + misc.c + new_hblk.c + obj_map.c + os_dep.c -- contains MacOS code + ptr_chck.c + reclaim.c + stubborn.c + typd_mlc.c + gc++.cc -- this is 'gc_cpp.cc' with less 'inline' and + -- throw std::bad_alloc when out of memory + -- gc_cpp.cc works just fine too + +== 2. Test that the library works with 'test.c' == + +The test app is just an ordinary ANSI-C console app. Make sure settings +match the library you're testing. + +Files +----- + test.c + the GC library to test -- link order before ANSI libs + suitable Mac+ANSI libraries + +prefix: +------ +---- ( cut here ) ---- gc_prefix_testlib.h -- all libs ----- +#define MSL_USE_PRECOMPILED_HEADERS 0 +#include +#undef NDEBUG + +#define ALL_INTERIOR_POINTERS /* for GC_priv.h */ +---- ( cut here ) ---- + +== 3. Test that the C++ interface 'gc_cpp.cc/h' works with 'test_cpp.cc' == + +The test app is just an ordinary ANSI-C console app. Make sure settings match +the library you're testing. + +Files +----- + test_cpp.cc + the GC library to test -- link order before ANSI libs + suitable Mac+ANSI libraries + +prefix: +------ +same as for test.c + +For convenience I used one test-project with several targets so that all +test apps are build at once. Two for each library to test: test.c and +gc_app.cc. When I was satisfied that the libraries were OK. I put the +libraries + gc.h + the c++ interface-file in a folder that I then put into +the MSL hierarchy so that I don't have to alter access-paths in projects +that use the GC. + +After that, just add the proper GC library to your project and the GC is in +action! malloc will call GC_malloc and free GC_free, new/delete too. You +don't have to call free or delete. You may have to be a bit cautious about +delete if you're freeing other resources than RAM. See gc_cpp.h. You can +also keep coding as always with delete/free. That works too. If you want, +include "gc.h" and tweak its use a bit. + +== Symantec SPM == + +It has been a while since I tried the GC in SPM, but I think that the above +instructions should be sufficient to guide you through in SPM too. SPM +needs to know where the global data is. Use the files 'datastart.c' and +'dataend.c'. Put 'datastart.c' at the top of your project and 'dataend.c' +at the bottom of your project so that all data is surrounded. This is not +needed in Codewarrior because it provides intrinsic variables +__datastart__, __data_end__ that wraps all globals. + +== Source Changes (GC 4.12a2) == + +Very few. Just one tiny in the GC, not strictly needed. +- test_cpp.cc + made the first lines of main() look like this: + ------------ + int main( int argc, char* argv[] ) { + #endif + #if macintosh // MacOS + char* argv_[] = {"test_cpp","10"}; // doesn't + argv=argv_; // have a + argc = sizeof(argv_)/sizeof(argv_[0]); // commandline + #endif // + + int i, iters, n; + # ifndef __GNUC__ + alloc dummy_to_fool_the_compiler_into_doing_things_it_currently_cant_handle; + ------------ + +- config.h [now gcconfig.h] + __MWERKS__ does not have to mean MACOS. You can use Codewarrior to + build a Win32 or BeOS library and soon a Rhapsody library. You may + have to change that #if... + + + + It worked for me, hope it works for you. + + Lars Farm +---------------------------------------------------------------------------- + + +Patrick Beard's instructions (may be dated): + +v4.3 of the collector now runs under Symantec C++/THINK C v7.0.4, and +Metrowerks C/C++ v4.5 both 68K and PowerPC. Project files are provided +to build and test the collector under both development systems. + +Configuration +------------- + +To configure the collector, under both development systems, a prefix file +is used to set preprocessor directives. This file is called "MacOS_config.h". + +Testing +------- + +To test the collector (always a good idea), build one of the gctest projects, +gctest. (Symantec C++/THINK C), mw/gctest.68K, or mw/gctest.PPC. The +test will ask you how many times to run; 1 should be sufficient. + +Building +-------- + +For your convenience project files for the major Macintosh development +systems are provided. + +For Symantec C++/THINK C, you must build the two projects gclib-1 and +gclib-2. It has to be split up because the collector has more than 32k +of static data and no library can have more than this in the Symantec +environment. (Future versions will probably fix this.) + +For Metrowerks C/C++ 4.5 you build gc.68K/PPC and the result will +be a library called gc.68K.lib/gc.PPC.lib. + +Using +----- + +Under Symantec C++/THINK C, you can just add the gclib-1 and gclib-2 +projects to your own project. Under Metrowerks, you add gc.68K.lib or +gc.PPC.lib and two additional files. You add the files called datastart.c +and dataend.c to your project, bracketing all files that use the collector. +See mw/gctest for an example. + +Include the projects/libraries you built above into your own project, +#include "gc.h", and call GC_malloc. You don't have to call GC_free. + +Patrick C. Beard diff --git a/doc/README.OS2 b/doc/README.OS2 new file mode 100644 index 0000000..5345bbd --- /dev/null +++ b/doc/README.OS2 @@ -0,0 +1,6 @@ +The code assumes static linking, and a single thread. The editor de has +not been ported. The cord test program has. The supplied OS2_MAKEFILE +assumes the IBM C Set/2 environment, but the code shouldn't. + +Since we haven't figured out hoe to do perform partial links or to build static +libraries, clients currently need to link against a long list of executables. diff --git a/doc/README.amiga b/doc/README.amiga new file mode 100644 index 0000000..fb9aacc --- /dev/null +++ b/doc/README.amiga @@ -0,0 +1,288 @@ + Kjetil S. Matheussen's notes (28-11-2000) + +Compiles under SAS/C again. Should also still compile under other +Amiga compilers without big changes. I haven't checked if it still +works under gcc, because I don't have gcc for Amiga. But I have +updated 'Makefile', and hope it compiles fine. + + +WHATS NEW: + +1. + Made a pretty big effort in preventing GCs allocating-functions from returning + chip-mem. + + The lower part of the new file AmigaOS.c does this in various ways, mainly by + wrapping GC_malloc, GC_malloc_atomic, GC_malloc_uncollectable, + GC_malloc_atomic_uncollectable, GC_malloc_stubborn, GC_malloc_ignore_off_page + and GC_malloc_atomic_ignore_off_page. GC_realloc is also wrapped, but + doesn't do the same effort in preventing to return chip-mem. + Other allocating-functions (f.ex. GC_*_typed_) can probably be + used without any problems, but beware that the warn hook will not be called. + In case of problems, don't define GC_AMIGA_FASTALLOC. + + Programs using more time actually using the memory allocated + (instead of just allocate and free rapidly) have + the most to earn on this, but even gctest now normally runs twice + as fast and uses less memory, on my poor 8MB machine. + + The changes have only effect when there is no more + fast-mem left. But with the way GC works, it + could happen quite often. Beware that an atexit handler had to be added, + so using the abort() function will make a big memory-loss. + If you absolutely must call abort() instead of exit(), try calling + the GC_amiga_free_all_mem function before abort(). + + New Amiga-specific compilation flags: + + GC_AMIGA_FASTALLOC - By NOT defining this option, GC will work like before, + it will not try to force fast-mem out of the OS, and + it will use normal calloc for allocation, and the rest + of the following flags will have no effect. + + GC_AMIGA_ONLYFAST - Makes GC never to return chip-mem. GC_AMIGA_RETRY have + no effect if this flag is set. + + GC_AMIGA_GC - If gc returns NULL, do a GC_gcollect, and try again. This + usually is a success with the standard GC configuration. + It is also the most important flag to set to prevent + GC from returning chip-mem. Beware that it slows down a lot + when a program is rapidly allocating/deallocating when + there's either very little fast-memory left or very little + chip-memory left. Its not a very common situation, but gctest + sometimes (very rare) use many minutes because of this. + + GC_AMIGA_RETRY - If gc succeed allocating memory, but it is chip-mem, + try again and see if it is fast-mem. Most of the time, + it will actually return fast-mem for the second try. + I have set max number of retries to 9 or size/5000. You + can change this if you like. (see GC_amiga_rec_alloc()) + + GC_AMIGA_PRINTSTATS - Gather some statistics during the execution of a + program, and prints out the info when the atexit-handler + is called. + + My recommendation is to set all this flags, except GC_AMIGA_PRINTSTATS and + GC_AMIGA_ONLYFAST. + + If your program demands high response-time, you should + not define GC_AMIGA_GC, and possible also define GC_AMIGA_ONLYFAST. + GC_AMIGA_RETRY does not seem to slow down much. + + Also, when compiling up programs, and GC_AMIGA_FASTALLOC was not defined when + compiling gc, you can define GC_AMIGA_MAKINGLIB to avoid having these allocation- + functions wrapped. (see gc.h) + + Note that GC_realloc must not be called before any of + the other above mentioned allocating-functions have been called. (shouldn't be + any programs doing so either, I hope). + + Another note. The allocation-function is wrapped when defining + GC_AMIGA_FASTALLOC by letting the function go thru the new + GC_amiga_allocwrapper_do function-pointer (see gc.h). Means that + sending function-pointers, such as GC_malloc, GC_malloc_atomic, etc., + for later to be called like f.ex this, (*GC_malloc_function_pointer)(size), + will not wrap the function. This is normally not a big problem, unless + all allocation function is called like this, which will cause the + atexit un-allocating function never to be called. Then you either + have to manually add the atexit handler, or call the allocation- + functions function-pointer functions like this; + (*GC_amiga_allocwrapper_do)(size,GC_malloc_function_pointer). + There are probably better ways this problem could be handled, unfortunately, + I didn't find any without rewriting or replacing a lot of the GC-code, which + I really didn't want to. (Making new GC_malloc_* functions, and just + define f.ex GC_malloc as GC_amiga_malloc should work too). + + + New Amiga-specific function: + + void GC_amiga_set_toany(void (*func)(void)); + + 'func' is a function that will be called right before gc has to change + allocation-method from MEMF_FAST to MEMF_ANY. Ie. when it is likely + it will return chip-mem. + + +2. A few small compiler-specific additions to make it compile with SAS/C again. + +3. Updated and rewritten the smakefile, so that it works again and that + the "unnecessary" 'SCOPTIONS' files could be removed. Also included + the cord-smakefile stuff in the main smakefile, so that the cord smakefile + could be removed too. By writing smake -f Smakefile.smk, both gc.lib and + cord.lib will be made. + + + +STILL MISSING: + +Programs can not be started from workbench, at least not for SAS/C. (Martin +Tauchmanns note about that it now works with workbench is definitely wrong +when concerning SAS/C). An iconx-script solves this problem. + + +BEWARE! + +-To run gctest, set the stack to around 200000 bytes first. +-SAS/C-specific: cord will crash if you compile gc.lib with + either parm=reg or parm=both. (missing legal prototypes for + function-pointers someplace is the reason I guess.). + + +tested with software: Radium, http://www.stud.ifi.uio.no/~ksvalast/radium/ +tested with hardware: MC68060 + + + Martin Tauchmann's notes (1-Apr-99) + +Works now, also with the GNU-C compiler V2.7.2.1. +Modify the `Makefile` +CC=cc $(ABI_FLAG) +to +CC=gcc $(ABI_FLAG) + +TECHNICAL NOTES + +- `GC_get_stack_base()`, `GC_register_data_segments()` works now with every + C compiler; also Workbench. + +- Removed AMIGA_SKIP_SEG, but the Code-Segment must not be scanned by GC. + + +PROBLEMS +- When the Linker, does`t merge all Code-Segments to an single one. LD of GCC + do it always. + +- With ixemul.library V47.3, when an GC program launched from another program + (example: `Make` or `if_mach M68K AMIGA gctest`), `GC_register_data_segments()` + found the Segment-List of the caller program. + Can be fixed, if the run-time initialization code (for C programs, usually *crt0*) + support `__data` and `__bss`. + +- PowerPC Amiga currently not supported. + +- Dynamic libraries (dyn_load.c) not supported. + + +TESTED WITH SOFTWARE + +`Optimized Oberon 2 C` (oo2c) + + +TESTED WITH HARDWARE + +MC68030 + + + Michel Schinz's notes + +WHO DID WHAT + +The original Amiga port was made by Jesper Peterson. I (Michel Schinz) +modified it slightly to reflect the changes made in the new official +distributions, and to take advantage of the new SAS/C 6.x features. I also +created a makefile to compile the "cord" package (see the cord +subdirectory). + +TECHNICAL NOTES + +In addition to Jesper's notes, I have the following to say: + +- Starting with version 4.3, gctest checks to see if the code segment is + added to the root set or not, and complains if it is. Previous versions + of this Amiga port added the code segment to the root set, so I tried to + fix that. The only problem is that, as far as I know, it is impossible to + know which segments are code segments and which are data segments (there + are indeed solutions to this problem, like scanning the program on disk + or patch the LoadSeg functions, but they are rather complicated). The + solution I have chosen (see os_dep.c) is to test whether the program + counter is in the segment we are about to add to the root set, and if it + is, to skip the segment. The problems are that this solution is rather + awkward and that it works only for one code segment. This means that if + your program has more than one code segment, all of them but one will be + added to the root set. This isn't a big problem in fact, since the + collector will continue to work correctly, but it may be slower. + + Anyway, the code which decides whether to skip a segment or not can be + removed simply by not defining AMIGA_SKIP_SEG. But notice that if you do + so, gctest will complain (it will say that "GC_is_visible produced wrong + failure indication"). However, it may be useful if you happen to have + pointers stored in a code segment (you really shouldn't). + + If anyone has a good solution to the problem of finding, when a program + is loaded in memory, whether a segment is a code or a data segment, + please let me know. + + + Jesper Peterson's notes + +ADDITIONAL NOTES FOR AMIGA PORT + +These notes assume some familiarity with Amiga internals. + +WHY I PORTED TO THE AMIGA + +The sole reason why I made this port was as a first step in getting +the Sather(*) language on the Amiga. A port of this language will +be done as soon as the Sather 1.0 sources are made available to me. +Given this motivation, the garbage collection (GC) port is rather +minimal. + +(*) For information on Sather read the comp.lang.sather newsgroup. + +LIMITATIONS + +This port assumes that the startup code linked with target programs +is that supplied with SAS/C versions 6.0 or later. This allows +assumptions to be made about where to find the stack base pointer +and data segments when programs are run from WorkBench, as opposed +to running from the CLI. The compiler dependent code is all in the +GC_get_stack_base() and GC_register_data_segments() functions, but +may spread as I add Amiga specific features. + +Given that SAS/C was assumed, the port is set up to be built with +"smake" using the "SMakefile". Compiler options in "SCoptions" can +be set with "scopts" program. Both "smake" and "scopts" are part of +the SAS/C commercial development system. + +In keeping with the porting philosophy outlined above, this port +will not behave well with Amiga specific code. Especially not inter- +process comms via messages, and setting up public structures like +Intuition objects or anything else in the system lists. For the +time being the use of this library is limited to single threaded +ANSI/POSIX compliant or near-compliant code. (ie. Stick to stdio +for now). Given this limitation there is currently no mechanism for +allocating "CHIP" or "PUBLIC" memory under the garbage collector. +I'll add this after giving it considerable thought. The major +problem is the entire physical address space may have to me scanned, +since there is no telling who we may have passed memory to. + +If you allocate your own stack in client code, you will have to +assign the pointer plus stack size to GC_stackbottom. + +The initial stack size of the target program can be compiled in by +setting the __stack symbol (see SAS documentation). It can be over- +ridden from the CLI by running the AmigaDOS "stack" program, or from +the WorkBench by setting the stack size in the tool types window. + +SAS/C COMPILER OPTIONS (SCoptions) + +You may wish to check the "CPU" code option is appropriate for your +intended target system. + +Under no circumstances set the "StackExtend" code option in either +compiling the library or *ANY* client code. + +All benign compiler warnings have been suppressed. These mainly +involve lack of prototypes in the code, and dead assignments +detected by the optimizer. + +THE GOOD NEWS + +The library as it stands is compatible with the GigaMem commercial +virtual memory software, and probably similar PD software. + +The performance of "gctest" on an Amiga 2630 (68030 @ 25Mhz) +compares favorably with an HP9000 with similar architecture (a 325 +with a 68030 I think). + +----------------------------------------------------------------------- diff --git a/doc/README.arm.cross b/doc/README.arm.cross new file mode 100644 index 0000000..0ededbd --- /dev/null +++ b/doc/README.arm.cross @@ -0,0 +1,62 @@ +From: Margaret Fleck + +Here's the key details of what worked for me, in case anyone else needs them. +There may well be better ways to do some of this, but .... + -- Margaret + + +The badge4 has a StrongArm-1110 processor and a StrongArm-1111 coprocessor. + +Assume that the garbage collector distribution is unpacked into /home/arm/gc6.0, +which is visible to both the ARM machine and a linux desktop (e.g. via NFS mounting). + +Assume that you have a file /home/arm/config.site with contents something like the +example attached below. Notice that our local ARM toolchain lives in +/skiff/local. + +Go to /home/arm/gc6.0 directory. Do + CONFIG_SITE=/home/arm/config.site ./configure --target=arm-linux +--prefix=/home/arm/gc6.0 + +On your desktop, do: + make + make install +The main garbage collector library should now be in ../gc6.0/lib/libgc.so. + +To test the garbage collector, first do the following on your desktop + make gctest + ./gctest +Then do the following on the ARM machine + cd .libs + ./lt-gctest + +Do not try to do "make test" (the usual way of running the test +program). This does not work and seems to erase some of the important +files. + +The gctest program claims to have succeeded. Haven't run any further tests +with it, though I'll be doing so in the near future. + +------------------------------- +# config.site for configure + +HOSTCC=gcc + +# Names of the cross-compilers +CC=/skiff/local/bin/arm-linux-gcc +CXX=/skiff/local/bin/arm-linux-gcc + +# The cross compiler specific options +CFLAGS="-O2 -fno-exceptions" +CXXFLAGS="-O2 -fno-exceptions" +CPPFLAGS="-O2 -fno-exceptions" +LDFLAGS="" + +# Some other programs +AR=/skiff/local/bin/arm-linux-ar +RANLIB=/skiff/local/bin/arm-linux-ranlib +NM=/skiff/local/bin/arm-linux-nm +ac_cv_path_NM=/skiff/local/bin/arm-linux-nm +ac_cv_func_setpgrp_void=yes +x_includes=/skiff/local/arm-linux/include/X11 +x_libraries=/skiff/local/arm-linux/lib/X11 diff --git a/doc/README.autoconf b/doc/README.autoconf new file mode 100644 index 0000000..e892873 --- /dev/null +++ b/doc/README.autoconf @@ -0,0 +1,59 @@ +Starting from GC v6.0, we support GNU-style builds based on automake, +autoconf and libtool. This is based almost entirely on Tom Tromey's work +with gcj. + +To build and install libraries use + +configure; make; make install + +The advantages of this process are: + +1) It should eventually do a better job of automatically determining the +right compiler to use, etc. It probably already does in some cases. + +2) It tries to automatically set a good set of default GC parameters for +the platform (e.g. thread support). It provides an easier way to configure +some of the others. + +3) It integrates better with other projects using a GNU-style build process. + +4) It builds both dynamic and static libraries. + +The known disadvantages are: + +1) The build scripts are much more complex and harder to debug (though largely +standard). I don't understand them all, and there's probably lots of redundant +stuff. + +2) It probably doesn't work on all Un*x-like platforms yet. It probably will +never work on the rest. + +3) The scripts are not yet complete. Some of the standard GNU targets don't +yet work. (Corrections/additions are very welcome.) + +The distribution should contain all files needed to run "configure" and "make", +as well as the sources needed to regenerate the derived files. (If I missed +some, please let me know.) + +Note that the distribution comes without "Makefile" which is generated by +"configure". The distribution also contains "Makefile.direct" which is not +always equivalent to the generated one. + +Important options to configure: + + --prefix=PREFIX install architecture-independent files in PREFIX + [/usr/local] + --exec-prefix=EPREFIX install architecture-dependent files in EPREFIX + [same as prefix] + --enable-threads=TYPE choose threading package + --enable-parallel-mark parallelize marking and free list construction + --enable-gc-debug (--enable-full-debug before about 7.0) + include full support for pointer back-tracing etc. + + +Unless --prefix is set (or --exec-prefix or one of the more obscure options), +make install will install libgc.a and libgc.so in /usr/local/bin, which +would typically require the "make install" to be run as root. + +Most commonly --enable-threads=posix or will be needed. --enable-parallel-mark +is recommended for multiprocessors if it is supported on the platform. diff --git a/doc/README.cmake b/doc/README.cmake new file mode 100644 index 0000000..e691fa9 --- /dev/null +++ b/doc/README.cmake @@ -0,0 +1,50 @@ + +CMAKE +----- + +Win32 binaries (both 32- and 64-bit) can be built using CMake. CMake is an +open-source tool like automake - it generates makefiles. + +Some preliminary work has been done to make this work on other platforms, but +the support is not yet complete. + +CMake will generate: + + Borland Makefiles + MSYS Makefiles + MinGW Makefiles + NMake Makefiles + Unix Makefiles + . Visual Studio project files + Visual Studio 6 + Visual Studio 7 + Visual Studio 7 .NET 2003 + Visual Studio 8 2005 + Visual Studio 8 2005 Win64 + Visual Studio 9 2008 + Visual Studio 9 2008 Win64 + Watcom WMake + + +BUILD PROCESS +------------- + + . install cmake (cmake.org) + . add directory containing cmake.exe to %PATH% + . run cmake from the gc root directory, passing the target with -G: + e.g., + > cmake -G "Visual Studio 8 2005" + use the gc.sln file generated by cmake to build gc + . you can also run cmake from a build directory to build outside of + the source tree. Just specify the path to the source tree: + e.g., + > mkdir build + > cd build + > cmake .. -G "Visual Studio 8 2005" + + +INPUT +----- + +The main input to cmake are the CMakeLists.txt files in each directory. For +help, goto cmake.org. diff --git a/doc/README.cords b/doc/README.cords new file mode 100644 index 0000000..985a3a1 --- /dev/null +++ b/doc/README.cords @@ -0,0 +1,50 @@ +Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. + +THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + +Permission is hereby granted to use or copy this program +for any purpose, provided the above notices are retained on all copies. +Permission to modify the code and to distribute modified code is granted, +provided the above notices are retained, and a notice that the code was +modified is included with the above copyright notice. + +Please send bug reports to Hans-J. Boehm. + +This is a string packages that uses a tree-based representation. +See cord.h for a description of the functions provided. Ec.h describes +"extensible cords", which are essentially output streams that write +to a cord. These allow for efficient construction of cords without +requiring a bound on the size of a cord. + +More details on the data structure can be found in + +Boehm, Atkinson, and Plass, "Ropes: An Alternative to Strings", +Software Practice and Experience 25, 12, December 1995, pp. 1315-1330. + +A fundamentally similar "rope" data structure is also part of SGI's standard +template library implementation, and its descendants, which include the +GNU C++ library. That uses reference counting by default. +There is a short description of that data structure at +http://www.sgi.com/tech/stl/ropeimpl.html . + +All of these are descendants of the "ropes" in Xerox Cedar. + +cord/tests/de.c is a very dumb text editor that illustrates the use of cords. +It maintains a list of file versions. Each version is simply a +cord representing the file contents. Nonetheless, standard +editing operations are efficient, even on very large files. +(Its 3 line "user manual" can be obtained by invoking it without +arguments. Note that ^R^N and ^R^P move the cursor by +almost a screen. It does not understand tabs, which will show +up as highlighted "I"s. Use the UNIX "expand" program first.) +To build the editor, type "make cord/de" in the gc directory. + +This package assumes an ANSI C compiler such as gcc. It will +not compile with an old-style K&R compiler. + +Note that CORD_printf and friends use C functions with variable numbers +of arguments in non-standard-conforming ways. This code is known to +break on some platforms, notably PowerPC. It should be possible to +build the remainder of the library (everything but cordprnt.c) on +any platform that supports the collector. diff --git a/doc/README.darwin b/doc/README.darwin new file mode 100644 index 0000000..11bb7e2 --- /dev/null +++ b/doc/README.darwin @@ -0,0 +1,144 @@ +Darwin/MacOSX Support - December 16, 2003 + +== Build Notes == + +Building can be done with autoconf as normal. If you want to build +a Universal library using autoconf, you need to disable dependency +tracking and specify your desired architectures in CFLAGS: + +CFLAGS="-arch ppc -arch i386 -arch x86_64" ./configure --disable-dependency-tracking + + +== Important Usage Notes == + +GC_init() MUST be called before calling any other GC functions. This +is necessary to properly register segments in dynamic libraries. This +call is required even if you code does not use dynamic libraries as the +dyld code handles registering all data segments. + +When your use of the garbage collector is confined to dylibs and you +cannot call GC_init() before your libraries' static initializers have +run and perhaps called GC_malloc(), create an initialization routine +for each library to call GC_init(): + +#include "gc.h" +extern "C" void my_library_init() { GC_init(); } + +Compile this code into a my_library_init.o, and link it into your +dylib. When you link the dylib, pass the -init argument with +_my_library_init (e.g. gcc -dynamiclib -o my_library.dylib a.o b.o c.o +my_library_init.o -init _my_library_init). This causes +my_library_init() to be called before any static initializers, and +will initialize the garbage collector properly. + +Note: It doesn't hurt to call GC_init() more than once, so it's best, +if you have an application or set of libraries that all use the +garbage collector, to create an initialization routine for each of +them that calls GC_init(). Better safe than sorry. + +The incremental collector is still a bit flaky on darwin. It seems to +work reliably with workarounds for a few possible bugs in place however +these workaround may not work correctly in all cases. There may also +be additional problems that I have not found. + +Thread-local GC allocation will not work with threads that are not +created using the GC-provided override of pthread_create(). Threads +created without the GC-provided pthread_create() do not have the +necessary data structures in the GC to store this data. + + +== Implementation Information == + +Darwin/MacOSX support is nearly complete. Thread support is reliable on +Darwin 6.x (MacOSX 10.2) and there have been reports of success on older +Darwin versions (MacOSX 10.1). Shared library support had also been +added and the gc can be run from a shared library. + +Thread support is implemented in terms of mach thread_suspend and +thread_resume calls. These provide a very clean interface to thread +suspension. This implementation doesn't rely on pthread_kill so the +code works on Darwin < 6.0 (MacOSX 10.1). All the code to stop and +start the world is located in darwin_stop_world.c. + +Since not all uses of the GC enable clients to override pthread_create() +before threads have been created, the code for stopping the world has +been rewritten to look for threads using Mach kernel calls. Each +thread identified in this way is suspended and resumed as above. In +addition, since Mach kernel threads do not contain pointers to their +stacks, a stack-walking function has been written to find the stack +limits. Given an initial stack pointer (for the current thread, a +pointer to a stack-allocated local variable will do; for a non-active +thread, we grab the value of register 1 (on PowerPC)), it +will walk the PPC Mach-O-ABI compliant stack chain until it reaches the +top of the stack. This appears to work correctly for GCC-compiled C, +C++, Objective-C, and Objective-C++ code, as well as for Java +programs that use JNI. If you run code that does not follow the stack +layout or stack pointer conventions laid out in the PPC Mach-O ABI, +then this will likely crash the garbage collector. + +The original incremental collector support unfortunately no longer works +on recent Darwin versions. It also relied on some undocumented kernel +structures. Mach, however, does have a very clean interface to exception +handing. The current implementation uses Mach's exception handling. + +Much thanks goes to Andrew Stone, Dietmar Planitzer, Andrew Begel, +Jeff Sturm, and Jesse Rosenstock for all their work on the +Darwin/OS X port. + +-Brian Alliet + +== gc_cpp.h usage == + +Replacement of operator new and delete is apparently not supported with +dynamic libraries. This means that applications using gc_cpp.h +(including the built-in test) will probably not work correctly with +the collector in a dynamic library, unless special care is taken. + +See +http://article.gmane.org/gmane.comp.programming.garbage-collection.boehmgc/1421 +for some details. + +- Hans Boehm (based on information from Andrew Begel) + + +== Older Information (Most of this no longer applies to the current code) == + +While the GC should work on MacOS X Server, MacOS X and Darwin, I only tested +it on MacOS X Server. +I've added a PPC assembly version of GC_push_regs(), thus the setjmp() hack is +no longer necessary. Incremental collection is supported via mprotect/signal. +The current solution isn't really optimal because the signal handler must decode +the faulting PPC machine instruction in order to find the correct heap address. +Further, it must poke around in the register state which the kernel saved away +in some obscure register state structure before it calls the signal handler - +needless to say the layout of this structure is no where documented. +Threads and dynamic libraries are not yet supported (adding dynamic library +support via the low-level dyld API shouldn't be that hard). + +The original MacOS X port was brought to you by Andrew Stone. + + +June, 1 2000 + +Dietmar Planitzer + +Note from Andrew Begel: + +One more fix to enable gc.a to link successfully into a shared library for +MacOS X. You have to add -fno-common to the CFLAGS in the Makefile. MacOSX +disallows common symbols in anything that eventually finds its way into a +shared library. (I don't completely understand why, but -fno-common seems to +work and doesn't mess up the garbage collector's functionality). + +Feb 26, 2003 + +Jeff Sturm and Jesse Rosenstock provided a patch that adds thread support. +GC_MACOSX_THREADS should be defined in the build and in clients. Real +dynamic library support is still missing, i.e. dynamic library data segments +are still not scanned. Code that stores pointers to the garbage collected +heap in statically allocated variables should not reside in a dynamic +library. This still doesn't appear to be 100% reliable. + +Mar 10, 2003 +Brian Alliet contributed dynamic library support for MacOSX. It could also +use more testing. diff --git a/doc/README.environment b/doc/README.environment new file mode 100644 index 0000000..7d4d96c --- /dev/null +++ b/doc/README.environment @@ -0,0 +1,187 @@ +The garbage collector looks at a number of environment variables which are, +then, used to affect its operation. + +GC_INITIAL_HEAP_SIZE= - Initial heap size in bytes. May speed up + process start-up. Optionally, may be + specified with a multiplier ('k', 'M' or 'G') + suffix. + +GC_MAXIMUM_HEAP_SIZE= - Maximum collected heap size. Allows + a multiplier suffix. + +GC_LOOP_ON_ABORT - Causes the collector abort routine to enter a tight loop. + This may make it easier to debug, such a process, especially + for multi-threaded platforms that don't produce usable core + files, or if a core file would be too large. On some + platforms, this also causes SIGSEGV to be caught and + result in an infinite loop in a handler, allowing + similar debugging techniques. + +GC_PRINT_STATS - Turn on GC logging. Not functional with SMALL_CONFIG. + +GC_LOG_FILE - The name of the log file. Stderr by default. Not functional + with SMALL_CONFIG. + +GC_ONLY_LOG_TO_FILE - Turns off redirection of GC stdout and stderr to the log + file specified by GC_LOG_FILE. Has no effect unless + GC_LOG_FILE is set. Not functional with SMALL_CONFIG. + +GC_PRINT_VERBOSE_STATS - Turn on even more logging. Not functional with + SMALL_CONFIG. + +GC_DUMP_REGULARLY - Generate a GC debugging dump GC_dump() on startup + and during every collection. Very verbose. Useful + if you have a bug to report, but please include only the + last complete dump. + +GC_COLLECT_AT_MALLOC= - Override the default value specified by + GC_COLLECT_AT_MALLOC macro. Has no effect unless + GC is built with GC_COLLECT_AT_MALLOC defined. + +GC_BACKTRACES= - Generate n random back-traces (for heap profiling) after + each GC. Collector must have been built with + KEEP_BACK_PTRS. This won't generate useful output unless + most objects in the heap were allocated through debug + allocators. This is intended to be only a statistical + sample; individual traces may be erroneous due to + concurrent heap mutation. + +GC_PRINT_ADDRESS_MAP - Linux only. Dump /proc/self/maps, i.e. various address + maps for the process, to stderr on every GC. Useful for + mapping root addresses to source for deciphering leak + reports. + +GC_NPROCS= - Linux w/threads only. Explicitly sets the number of processors + that the GC should expect to use. Note that setting this to 1 + when multiple processors are available will preserve + correctness, but may lead to really horrible performance, + since the lock implementation will immediately yield without + first spinning. + +GC_MARKERS= - Only if compiled with PARALLEL_MARK. Set the number + of marker threads. This is normally set to the number of + processors. It is safer to adjust GC_MARKERS than GC_NPROCS, + since GC_MARKERS has no impact on the lock implementation. + +GC_NO_BLACKLIST_WARNING - Prevents the collector from issuing + warnings about allocations of very large blocks. + Deprecated. Use GC_LARGE_ALLOC_WARN_INTERVAL instead. + +GC_LARGE_ALLOC_WARN_INTERVAL= - Print every nth warning about very large + block allocations, starting with the nth one. Small values + of n are generally benign, in that a bounded number of + such warnings generally indicate at most a bounded leak. + For best results it should be set at 1 during testing. + Default is 5. Very large numbers effectively disable the + warning. + +GC_IGNORE_GCJ_INFO - Ignore the type descriptors implicitly supplied by + GC_gcj_malloc and friends. This is useful for debugging + descriptor generation problems, and possibly for + temporarily working around such problems. It forces a + fully conservative scan of all heap objects except + those known to be pointer-free, and may thus have other + adverse effects. + +GC_PRINT_BACK_HEIGHT - Print max length of chain through unreachable objects + ending in a reachable one. If this number remains + bounded, then the program is "GC robust". This ensures + that a fixed number of misidentified pointers can only + result in a bounded space leak. This currently only + works if debugging allocation is used throughout. + It increases GC space and time requirements appreciably. + This feature is still somewhat experimental, and requires + that the collector have been built with MAKE_BACK_GRAPH + defined. For details, see Boehm, "Bounding Space Usage + of Conservative Garbage Collectors", POPL 2001 + (http://www.hpl.hp.com/techreports/2001/HPL-2001-251.html). + +GC_RETRY_SIGNALS, GC_NO_RETRY_SIGNALS - Try to compensate for lost + thread suspend signals (Pthreads only). On by + default for GC_OSF1_THREADS, off otherwise. Note + that this does not work around a possible loss of + thread restart signals. This seems to be necessary for + some versions of Tru64. Since we've previously seen + similar issues on some other operating systems, it + was turned into a runtime flag to enable last-minute + work-arounds. + +GC_USE_GETWRITEWATCH= - Only if MPROTECT_VDB and GWW_VDB are both defined + (Win32 only). Explicitly specify which strategy of + keeping track of dirtied pages should be used. + If n=0 then GetWriteWatch() is not used (falling back to + protecting pages and catching memory faults strategy) + else the collector tries to use GetWriteWatch-based + strategy (GWW_VDB) first if available. + +GC_DISABLE_INCREMENTAL - Ignore runtime requests to enable incremental GC. + Useful for debugging. + +The following turn on runtime flags that are also program settable. Checked +only during initialization. We expect that they will usually be set through +other means, but this may help with debugging and testing: + +GC_ENABLE_INCREMENTAL - Turn on incremental collection at startup. Note that, + depending on platform and collector configuration, this + may involve write protecting pieces of the heap to + track modifications. These pieces may include + pointer-free objects or not. Although this is intended + to be transparent, it may cause unintended system call + failures. Use with caution. + +GC_PAUSE_TIME_TARGET - Set the desired garbage collector pause time in msecs. + This only has an effect if incremental collection is + enabled. If a collection requires appreciably more time + than this, the client will be restarted, and the collector + will need to do additional work to compensate. The + special value "999999" indicates that pause time is + unlimited, and the incremental collector will behave + completely like a simple generational collector. If + the collector is configured for parallel marking, and + run on a multiprocessor, incremental collection should + only be used with unlimited pause time. + +GC_FULL_FREQUENCY - Set the desired number of partial collections between full + collections. Matters only if GC_incremental is set. + Not functional with SMALL_CONFIG. + +GC_FREE_SPACE_DIVISOR - Set GC_free_space_divisor to the indicated value. + Setting it to larger values decreases space consumption + and increases GC frequency. + +GC_UNMAP_THRESHOLD - Set the desired memory blocks unmapping threshold (the + number of sequential garbage collections for which + a candidate block for unmapping should remain free). The + special value "0" completely disables unmapping. + +GC_FORCE_UNMAP_ON_GCOLLECT - Turn "unmap as much as possible on explicit GC" + mode on (overrides the default value). Has no effect on + implicitly-initiated garbage collections. Has no effect if + memory unmapping is disabled (or not compiled in) or if the + unmapping threshold is 1. + +GC_FIND_LEAK - Turns on GC_find_leak and thus leak detection. Forces a + collection at program termination to detect leaks that would + otherwise occur after the last GC. + +GC_FINDLEAK_DELAY_FREE - Turns on deferred freeing of objects in the + leak-finding mode (see the corresponding macro + description for more information). + +GC_ABORT_ON_LEAK - Causes the application to be terminated once leaked or + smashed objects are found. + +GC_ALL_INTERIOR_POINTERS - Turns on GC_all_interior_pointers and thus interior + pointer recognition. + +GC_DONT_GC - Turns off garbage collection. Use cautiously. + +GC_USE_ENTIRE_HEAP - Set desired GC_use_entire_heap value at start-up. See + the similar macro description in README.macros. + +GC_TRACE=addr - Intended for collector debugging. Requires that the collector + have been built with ENABLE_TRACE defined. Causes the debugger + to log information about the tracing of address ranges + containing addr. Typically addr is the address that contains + a pointer to an object that mysteriously failed to get marked. + Addr must be specified as a hexadecimal integer. diff --git a/doc/README.ews4800 b/doc/README.ews4800 new file mode 100644 index 0000000..da4cff3 --- /dev/null +++ b/doc/README.ews4800 @@ -0,0 +1,81 @@ +GC on EWS4800 +------------- + +1. About EWS4800 + + EWS4800 is a 32/64-bit workstation. + + Vendor: NEC Corporation + OS: UX/4800 R9.* - R13.* (SystemV R4.2) + CPU: R4000, R4400, R10000 (MIPS) + +2. Compiler + + 32-bit: + Use ANSI C compiler. + CC = /usr/abiccs/bin/cc + + 64-bit: + Use the 64-bit ANSI C compiler. + CC = /usr/ccs64/bin/cc + AR = /usr/ccs64/bin/ar + +3. ELF file format + *** Caution: The following information is empirical. *** + + 32-bit: + ELF file has an unique format. (See a.out(4) and end(3C).) + + &_start + : text segment + &etext + DATASTART + : data segment (initialized) + &edata + DATASTART2 + : data segment (uninitialized) + &end + + Here, DATASTART and DATASTART2 are macros of GC, and are defined as + the following equations. (See include/private/gcconfig.h.) + The algorithm for DATASTART is similar with the function + GC_SysVGetDataStart() in os_dep.c. + + DATASTART = ((&etext + 0x3ffff) & ~0x3ffff) + (&etext & 0xffff) + + Dynamically linked: + DATASTART2 = (&_gp + 0x8000 + 0x3ffff) & ~0x3ffff + + Statically linked: + DATASTART2 = &edata + + GC has to check addresses both between DATASTART and &edata, and + between DATASTART2 and &end. If a program accesses between &etext + and DATASTART, or between &edata and DATASTART2, the segmentation + error occurs and the program stops. + + If a program is statically linked, there is not a gap between + &edata and DATASTART2. The global symbol &_DYNAMIC_LINKING is used + for the detection. + + 64-bit: + ELF file has a simple format. (See end(3C).) + + _ftext + : text segment + _etext + _fdata = DATASTART + : data segment (initialized) + _edata + _fbss + : data segment (uninitialized) + _end = DATAEND + +-- +Hironori SAKAMOTO + + +When using the new "configure; make" build process, please +run configure with the --disable-shared option. "Make check" does not +yet pass with dynamic libraries. The reasons for that are not yet +understood. (HB, paraphrasing message from Hironori SAKAMOTO.) diff --git a/doc/README.hp b/doc/README.hp new file mode 100644 index 0000000..bb583bb --- /dev/null +++ b/doc/README.hp @@ -0,0 +1,18 @@ +Dynamic loading support requires that executables be linked with -ldld. +The alternative is to build the collector without defining DYNAMIC_LOADING +in gcconfig.h and ensuring that all garbage collectible objects are +accessible without considering statically allocated variables in dynamic +libraries. + +The collector should compile with either plain cc or cc -Ae. Cc -Aa +fails to define _HPUX_SOURCE and thus will not configure the collector +correctly. + +Incremental collection support was added recently, and should now work. + +In spite of past claims, pthread support under HP/UX 11 should now work. +Define GC_HPUX_THREADS for the build. Incremental collection still does not +work in combination with it. + +The stack finding code can be confused by putenv calls before collector +initialization. Call GC_malloc or GC_init before any putenv calls. diff --git a/doc/README.linux b/doc/README.linux new file mode 100644 index 0000000..bfa8b18 --- /dev/null +++ b/doc/README.linux @@ -0,0 +1,128 @@ +See README.alpha for Linux on DEC AXP info. + +This file applies mostly to Linux/Intel IA32. Ports to Linux on an M68K, +IA64, SPARC, MIPS, Alpha and PowerPC are integrated too. They should behave +similarly, except that the PowerPC port lacks incremental GC support, and +it is unknown to what extent the Linux threads code is functional. +See below for M68K specific notes. + +Incremental GC is generally supported. + +Dynamic libraries are supported on an ELF system. + +The collector appears to work reliably with Linux threads, but beware +of older versions of glibc and gdb. + +The garbage collector uses SIGPWR and SIGXCPU if it is used with +Linux threads. These should not be touched by the client program. + +To use threads, you need to abide by the following requirements: + +1) You need to use LinuxThreads or NPTL (which are included in libc6). + + The collector relies on some implementation details of the LinuxThreads + package. This code may not work on other + pthread implementations (in particular it will *not* work with + MIT pthreads). + +2) You must compile the collector with -DGC_LINUX_THREADS (or + just -DGC_THREADS) and -D_REENTRANT specified in the Makefile. + +3a) Every file that makes thread calls should define GC_LINUX_THREADS and + _REENTRANT and then include gc.h. Gc.h redefines some of the + pthread primitives as macros which also provide the collector with + information it requires. + +3b) A new alternative to (3a) is to build the collector and compile GC clients + with -DGC_USE_LD_WRAP, and to link the final program with + + (for ld) --wrap dlopen --wrap pthread_create \ + --wrap pthread_join --wrap pthread_detach \ + --wrap pthread_sigmask --wrap pthread_exit --wrap pthread_cancel + + (for gcc) -Wl,--wrap -Wl,dlopen -Wl,--wrap -Wl,pthread_create \ + -Wl,--wrap -Wl,pthread_join -Wl,--wrap -Wl,pthread_detach \ + -Wl,--wrap -Wl,pthread_sigmask -Wl,--wrap -Wl,pthread_exit \ + -Wl,--wrap -Wl,pthread_cancel + + In any case, _REENTRANT should be defined during compilation. + +4) Dlopen() disables collection during its execution. (It can't run + concurrently with the collector, since the collector looks at its + data structures. It can't acquire the allocator lock, since arbitrary + user startup code may run as part of dlopen().) Under unusual + conditions, this may cause unexpected heap growth. + +5) The combination of GC_LINUX_THREADS, REDIRECT_MALLOC, and incremental + collection is probably not fully reliable, though it now seems to work + in simple cases. + +6) Thread local storage may not be viewed as part of the root set by the + collector. This probably depends on the linuxthreads version. For the + time being, any collectible memory referenced by thread local storage + should also be referenced from elsewhere, or be allocated as uncollectible. + (This is really a bug that should be fixed somehow. The current GC + version probably gets things right if there are not too many tls locations + and if dlopen is not used.) + + +M68K LINUX: +(From Richard Zidlicky) +The bad news is that it can crash every linux-m68k kernel on a 68040, +so an additional test is needed somewhere on startup. I have meanwhile +patches to correct the problem in 68040 buserror handler but it is not +yet in any standard kernel. + +Here is a simple test program to detect whether the kernel has the +problem. It could be run as a separate check in configure or tested +upon startup. If it fails (return !0) than mprotect can't be used +on that system. + +/* + * test for bug that may crash 68040 based Linux + */ + +#include +#include +#include +#include +#include + + +char *membase; +int pagesize=4096; +int pageshift=12; +int x_taken=0; + +int sighandler(int sig) +{ + mprotect(membase,pagesize,PROT_READ|PROT_WRITE); + x_taken=1; +} + +main() +{ + long l; + + signal(SIGSEGV,sighandler); + l=(long)mmap(NULL,pagesize,PROT_READ,MAP_PRIVATE | MAP_ANON,-1,0); + if (l==-1) + { + perror("mmap/malloc"); + abort(); + } + membase=(char*)l; + *(long*)(membase+sizeof(long))=123456789; + if (*(long*)(membase+sizeof(long)) != 123456789 ) + { + fprintf(stderr,"writeback failed !\n"); + exit(1); + } + if (!x_taken) + { + fprintf(stderr,"exception not taken !\n"); + exit(1); + } + fprintf(stderr,"vmtest Ok\n"); + exit(0); +} diff --git a/doc/README.macros b/doc/README.macros new file mode 100644 index 0000000..acf609c --- /dev/null +++ b/doc/README.macros @@ -0,0 +1,582 @@ +The collector uses a large amount of conditional compilation in order to +deal with platform dependencies. This violates a number of known coding +standards. On the other hand, it seems to be the only practical way to +support this many platforms without excessive code duplication. + +A few guidelines have mostly been followed in order to keep this manageable: + +1) #if and #ifdef directives are properly indented whenever easily possible. +All known C compilers allow whitespace between the "#" and the "if" to make +this possible. ANSI C also allows white space before the "#", though we +avoid that. It has the known disadvantages that it differs from the normal +GNU conventions, and that it makes patches larger than otherwise necessary. +In my opinion, it's still well worth it, for the same reason that we indent +ordinary "if" statements. + +2) Whenever possible, tests are performed on the macros defined in gcconfig.h +instead of directly testing platform-specific predefined macros. This makes +it relatively easy to adapt to new compilers with a different set of +predefined macros. Currently these macros generally identify platforms +instead of features. In many cases, this is a mistake. + +Many of the tested configuration macros are at least somewhat defined in +either include/private/gcconfig.h or in Makefile.direct. Here is an attempt +at documenting these macros: (Thanks to Walter Bright for suggesting +this. This is a work in progress) + +MACRO EXPLANATION +----- ----------- + +GC_DEBUG Tested by gc.h. Causes all-upper-case macros to + expand to calls to debug versions of collector routines. + +GC_NAMESPACE Tested by gc_cpp.h. Causes gc_cpp symbols to be defined + in "boehmgc" namespace. + +GC_DEBUG_REPLACEMENT Tested by gc.h. Causes GC_MALLOC/REALLOC() to be + defined as GC_debug_malloc/realloc_replacement(). + +GC_NO_THREAD_REDIRECTS Tested by gc.h. Prevents redirection of thread + creation routines etc. to GC_ versions. Requires the + programmer to explicitly handle thread registration. + +GC_NO_THREAD_DECLS Tested by gc.h. MS Windows only. Do not declare + Windows thread creation routines and do not include windows.h. + +GC_DONT_INCLUDE_WINDOWS_H Tested by gc.h. MS Windows only. Do not include + windows.h from gc.h (but Windows-specific thread creation + routines are declared). + +GC_UNDERSCORE_STDCALL Tested by gc.h. Explicitly prefix exported/imported + WINAPI (__stdcall) symbols with '_' (underscore). Could be + used with MinGW (for x86) compiler (in conjunction with + GC_DLL) to follow MS conventions for __stdcall symbols naming. + +_ENABLE_ARRAYNEW + #define'd by the Digital Mars C++ compiler when + operator new[] and delete[] are separately + overloadable. Used in gc_cpp.h. + +_DLL Tested by gc_config_macros.h. Defined by Visual C++ if runtime + dynamic libraries are in use. Used (only if none of GC_DLL, + GC_NOT_DLL, __GNUC__ are defined) to test whether + __declspec(dllimport) needs to be added to declarations + to support the case in which the collector is in a DLL. + +GC_DLL Defined by user if dynamic libraries are being built + or used. Also set by gc.h if _DLL is defined (except for + mingw) while GC_NOT_DLL and __GNUC__ are both undefined. + This is the macro that is tested internally to determine + whether the GC is in its own dynamic library. May need + to be set by clients before including gc.h. Note that + inside the GC implementation it indicates that the + collector is in its own dynamic library, should export + its symbols, etc. But in clients it indicates that the + GC resides in a different DLL, its entry points should + be referenced accordingly, and precautions may need to + be taken to properly deal with statically allocated + variables in the main program. Used for MS Windows. + Also used by GCC v4+ (only when the dynamic shared library + is being built) to hide internally used symbols. + +GC_NOT_DLL User-settable macro that overrides _DLL, e.g. if runtime + dynamic libraries are used, but the collector is in a static + library. Tested by gc_config_macros.h. + +GC_REQUIRE_WCSDUP Force GC to export GC_wcsdup() (the Unicode version + of GC_strdup); could be useful in the leak-finding mode. + + +These define arguments influence the collector configuration: + +FIND_LEAK Causes GC_find_leak to be initially set. This causes the + collector to assume that all inaccessible objects should have been + explicitly deallocated, and reports exceptions. Finalization and the test + program are not usable in this mode. + +GC_FINDLEAK_DELAY_FREE Turns on deferred freeing of objects in the + leak-finding mode letting the collector to detect alter-object-after-free + errors as well as detect leaked objects sooner (instead of only when program + terminates). Has no effect if SHORT_DBG_HDRS. + +GC_ABORT_ON_LEAK Causes the application to be terminated once leaked or + smashed (corrupted on use-after-free) objects are found (after printing the + information about that objects). + +SUNOS5SIGS Solaris-like signal handling. This is probably misnamed, + since it really doesn't guarantee much more than POSIX. Currently set only + for Solaris2.X, HPUX, and DRSNX. Should probably be set for some other + platforms. + +PCR Set if the collector is being built as part of the Xerox Portable + Common Runtime. + +IMPORTANT: Any of the _THREADS options must normally also be defined in + the client before including gc.h. This redefines thread primitives to + invoke the GC_ versions instead. Alternatively, linker-based symbol + interception can be used on a few platforms. + +GC_THREADS Should set the appropriate one of the below macros, + except GC_WIN32_PTHREADS, which must be set explicitly. Tested by gc.h. + +GC_SOLARIS_THREADS Enables support for Solaris pthreads. + Must also define _REENTRANT. + +GC_IRIX_THREADS Enables support for Irix pthreads. See README.sgi. + +GC_HPUX_THREADS Enables support for HP/UX 11 pthreads. + Also requires _REENTRANT or _POSIX_C_SOURCE=199506L. See README.hp. + +GC_LINUX_THREADS Enables support for Xavier Leroy's Linux threads + or NPTL threads. See README.linux. _REENTRANT may also be required. + +GC_OSF1_THREADS Enables support for Tru64 pthreads. + +GC_FREEBSD_THREADS Enables support for FreeBSD pthreads. + Appeared to run into some underlying thread problems. + +GC_NETBSD_THREADS Enables support for NetBSD pthreads. + +GC_OPENBSD_THREADS Enables support for OpenBSD pthreads. + +GC_DARWIN_THREADS Enables support for Mac OS X pthreads. + +GC_AIX_THREADS Enables support for IBM AIX threads. + +GC_DGUX386_THREADS Enables support for DB/UX on I386 threads. + See README.DGUX386. (Probably has not been tested recently.) + +GC_WIN32_THREADS Enables support for Win32 threads. That makes sense + for this Makefile only under Cygwin. + +GC_WIN32_PTHREADS Enables support for pthreads-win32 (or other + non-Cygwin pthreads library for Windows). This cannot be enabled + automatically by GC_THREADS, which would assume Win32 native threads. + +PTW32_STATIC_LIB Causes the static version of the Mingw pthreads + library to be used. Requires GC_WIN32_PTHREADS. + +GC_PTHREADS_PARAMARK Causes pthread-based parallel mark implementation + to be used even if GC_WIN32_PTHREADS is undefined. (Useful for WinCE.) + +ALL_INTERIOR_POINTERS Allows all pointers to the interior of objects to be + recognized. (See gc_priv.h for consequences.) Alternatively, + GC_all_interior_pointers can be set at process initialization time. + +SMALL_CONFIG Tries to tune the collector for small heap sizes, + usually causing it to use less space in such situations. Incremental + collection no longer works in this case. Also, removes some + statistic-printing code. Turns off some optimization algorithms (like data + prefetching in the mark routine). + +GC_DISABLE_INCREMENTAL Turn off the incremental collection support. + +NO_INCREMENTAL Causes the gctest program to not invoke the incremental + collector. This has no impact on the generated library, only on the test + program. (This is often useful for debugging failures unrelated to + incremental GC.) + +LARGE_CONFIG Tunes the collector for unusually large heaps. + Necessary for heaps larger than about 4 GiB on most (64-bit) machines. + Recommended for heaps larger than about 500 MiB. Not recommended for + embedded systems. Could be used in conjunction with SMALL_CONFIG to + generate smaller code (by disabling incremental collection support, + statistic printing and some optimization algorithms). + +DONT_ADD_BYTE_AT_END Meaningful only with ALL_INTERIOR_POINTERS or + GC_all_interior_pointers = 1. Normally ALL_INTERIOR_POINTERS + causes all objects to be padded so that pointers just past the end of + an object can be recognized. This can be expensive. (The padding + is normally more than one byte due to alignment constraints.) + DONT_ADD_BYTE_AT_END disables the padding. + +NO_EXECUTE_PERMISSION May cause some or all of the heap to not + have execute permission, i.e. it may be impossible to execute + code from the heap. Currently this only affects the incremental + collector on UNIX machines. It may greatly improve its performance, + since this may avoid some expensive cache synchronization. Alternatively, + GC_set_pages_executable can be called at the process initialization time. + +GC_NO_OPERATOR_NEW_ARRAY Declares that the C++ compiler does not + support the new syntax "operator new[]" for allocating and deleting arrays. + See gc_cpp.h for details. No effect on the C part of the collector. + This is defined implicitly in a few environments. Must also be defined + by clients that use gc_cpp.h. + +REDIRECT_MALLOC= Causes malloc to be defined as alias for X. + Unless the following macros are defined, realloc is also redirected + to GC_realloc, and free is redirected to GC_free. + Calloc and str[n]dup are redefined in terms of the new malloc. X should + be either GC_malloc or GC_malloc_uncollectable, or + GC_debug_malloc_replacement. (The latter invokes GC_debug_malloc + with dummy source location information, but still results in + properly remembered call stacks on Linux/X86 and Solaris/SPARC. + It requires that the following two macros also be used.) + The former is occasionally useful for working around leaks in code + you don't want to (or can't) look at. It may not work for + existing code, but it often does. Neither works on all platforms, + since some ports use malloc or calloc to obtain system memory. + (Probably works for UNIX, and Win32.) If you build with DBG_HDRS_ALL, + you should only use GC_debug_malloc_replacement as a malloc + replacement. + +REDIRECT_REALLOC= Causes GC_realloc to be redirected to X. + The canonical use is REDIRECT_REALLOC=GC_debug_realloc_replacement, + together with REDIRECT_MALLOC=GC_debug_malloc_replacement to + generate leak reports with call stacks for both malloc and realloc. + This also requires REDIRECT_FREE. + +REDIRECT_FREE= Causes free to be redirected to X. The canonical use + is REDIRECT_FREE=GC_debug_free. + +IGNORE_FREE Turns calls to free into a no-op. Only useful with + REDIRECT_MALLOC. + +NO_DEBUGGING Removes GC_dump and the debugging routines it calls. + Reduces code size slightly at the expense of debuggability. + +GC_DUMP_REGULARLY Generate regular debugging dumps. + +DEBUG_THREADS Turn on printing additional thread-support debugging + information. + +GC_COLLECT_AT_MALLOC= Force garbage collection at every + GC_malloc_* call with the size greater than the specified value. + (Might be useful for application debugging or in find-leak mode.) + +JAVA_FINALIZATION Makes it somewhat safer to finalize objects out of + order by specifying a nonstandard finalization mark procedure (see + finalize.c). Objects reachable from finalizable objects will be marked + in a separate post-pass, and hence their memory won't be reclaimed. + Not recommended unless you are implementing a language that specifies + these semantics. Since 5.0, determines only the initial value + of GC_java_finalization variable. + +FINALIZE_ON_DEMAND Causes finalizers to be run only in response + to explicit GC_invoke_finalizers() calls. + In 5.0 this became runtime adjustable, and this only determines the + initial value of GC_finalize_on_demand. + +GC_NO_FINALIZATION Exclude finalization support (for smaller code size). + +GC_TOGGLE_REFS_NOT_NEEDED Exclude toggle-refs support. + +GC_ATOMIC_UNCOLLECTABLE Includes code for GC_malloc_atomic_uncollectable. + This is useful if either the vendor malloc implementation is poor, + or if REDIRECT_MALLOC is used. + +MARK_BIT_PER_GRANULE Requests that a mark bit (or often byte) + be allocated for each allocation granule, as opposed to each object. + This often improves speed, possibly at some cost in space and/or + cache footprint. Normally it is best to let this decision be + made automatically depending on platform. + +MARK_BIT_PER_OBJ Requests that a mark bit be allocated for each + object instead of allocation granule. The opposite of + MARK_BIT_PER_GRANULE. + +HBLKSIZE= Explicitly sets the heap block size (where ddd is a power of + 2 between 512 and 16384). Each heap block is devoted to a single size and + kind of object. For the incremental collector it makes sense to match + the most likely page size. Otherwise large values result in more + fragmentation, but generally better performance for large heaps. + +USE_MMAP Use MMAP instead of sbrk to get new memory. + Works for Linux, FreeBSD, Cygwin, Solaris and Irix. + +USE_MUNMAP Causes memory to be returned to the OS under the right + circumstances. This currently disables VM-based incremental collection + (except for Win32 with GetWriteWatch() available). + Works under some Unix, Linux and Windows versions. + Requires USE_MMAP except for Windows. + +USE_WINALLOC (Cygwin only) Use Win32 VirtualAlloc (instead of sbrk or mmap) + to get new memory. Useful if memory unmapping (USE_MUNMAP) is enabled. + +MUNMAP_THRESHOLD= Set the desired memory blocks unmapping + threshold (the number of sequential garbage collections for which + a candidate block for unmapping should remain free). + +GC_FORCE_UNMAP_ON_GCOLLECT Set "unmap as much as possible on explicit GC" + mode on by default. The mode could be changed at run-time. Has no effect + unless unmapping is turned on. Has no effect on implicitly-initiated + garbage collections. + +PRINT_BLACK_LIST Whenever a black list entry is added, i.e. whenever + the garbage collector detects a value that looks almost, but not quite, + like a pointer, print both the address containing the value, and the + value of the near-bogus-pointer. Can be used to identify regions of + memory that are likely to contribute misidentified pointers. + +KEEP_BACK_PTRS Add code to save back pointers in debugging headers + for objects allocated with the debugging allocator. If all objects + through GC_MALLOC with GC_DEBUG defined, this allows the client + to determine how particular or randomly chosen objects are reachable + for debugging/profiling purposes. The gc_backptr.h interface is + implemented only if this is defined. + +GC_ASSERTIONS Enable some internal GC assertion checking. Currently + this facility is only used in a few places. It is intended primarily + for debugging of the garbage collector itself, but could also... + +DBG_HDRS_ALL Make sure that all objects have debug headers. Increases + the reliability (from 99.9999% to 100% mod. bugs) of some of the debugging + code (especially KEEP_BACK_PTRS). Makes SHORT_DBG_HDRS possible. + Assumes that all client allocation is done through debugging allocators. + +SHORT_DBG_HDRS Assume that all objects have debug headers. Shorten + the headers to minimize object size, at the expense of checking for + writes past the end of an object. This is intended for environments + in which most client code is written in a "safe" language, such as + Scheme or Java. Assumes that all client allocation is done using + the GC_debug_ functions, or through the macros that expand to these, + or by redirecting malloc to GC_debug_malloc_replacement. + (Also eliminates the field for the requested object size.) + Occasionally could be useful for debugging of client code. Slows down the + collector somewhat, but not drastically. + +SAVE_CALL_COUNT= Set the number of call frames saved with objects + allocated through the debugging interface. Affects the amount of + information generated in leak reports. Only matters on platforms + on which we can quickly generate call stacks, currently Linux/(X86 & SPARC) + and Solaris/SPARC and platforms that provide execinfo.h. + Default is zero. On X86, client + code should NOT be compiled with -fomit-frame-pointer. + +SAVE_CALL_NARGS= Set the number of functions arguments to be saved + with each call frame. Default is zero. Ignored if we don't know how to + retrieve arguments on the platform. + +CHECKSUMS Reports on erroneously clear dirty bits, and unexpectedly + altered stubborn objects, at substantial performance cost. Use only for + debugging of the incremental collector. Not compatible with USE_MUNMAP + or threads. + +GC_GCJ_SUPPORT Includes support for gcj (and possibly other systems + that include a pointer to a type descriptor in each allocated object). + Building this way requires an ANSI C compiler. + +USE_I686_PREFETCH Causes the collector to issue Pentium III style + prefetch instructions. No effect except on X86 Linux platforms. + Assumes a very recent gcc-compatible compiler and assembler. + (Gas prefetcht0 support was added around May 1999.) + Empirically the code appears to still run correctly on Pentium II + processors, though with no performance benefit. May not run on other + X86 processors? In some cases this improves performance by + 15% or so. + +USE_3DNOW_PREFETCH Causes the collector to issue AMD 3DNow style + prefetch instructions. Same restrictions as USE_I686_PREFETCH. + Minimally tested. Didn't appear to be an obvious win on a K6-2/500. + +USE_PPC_PREFETCH Causes the collector to issue PowerPC style + prefetch instructions. No effect except on PowerPC OS X platforms. + Performance impact untested. + +GC_USE_LD_WRAP In combination with the old flags listed in README.linux + causes the collector some system and pthread calls in a more transparent + fashion than the usual macro-based approach. Requires GNU ld, and + currently probably works only with Linux. + +GC_USE_DLOPEN_WRAP Causes the collector to redefine malloc and + intercepted pthread routines with their real names, and causes it to use + dlopen and dlsym to refer to the original versions. This makes it possible + to build an LD_PRELOADable malloc replacement library. + +THREAD_LOCAL_ALLOC Defines GC_malloc(), GC_malloc_atomic() and + GC_gcj_malloc() to use a per-thread set of free-lists. These then allocate + in a way that usually does not involve acquisition of a global lock. + Recommended for multiprocessors. Requires explicit GC_INIT() call, unless + REDIRECT_MALLOC is defined and GC_malloc is used first. + +USE_COMPILER_TLS Causes thread local allocation to use + the compiler-supported "__thread" thread-local variables. This is the + default in HP/UX. It may help performance on recent Linux installations. + (It failed for me on RedHat 8, but appears to work on RedHat 9.) + +GC_ATTR_TLS_FAST Use specific attributes for GC_thread_key like + __attribute__((tls_model("local-exec"))). + +PARALLEL_MARK Allows the marker to run in multiple threads. Recommended + for multiprocessors. + +GC_ALWAYS_MULTITHREADED Force multi-threaded mode at GC initialization. + (Turns GC_allow_register_threads into a no-op routine.) + +GC_ENABLE_SUSPEND_THREAD (Linux only) Turn on thread suspend/resume API +support. + +GC_WINMAIN_REDIRECT (Win32 only) Redirect (rename) an application + WinMain to GC_WinMain; implement the "real" WinMain which starts a new + thread to call GC_WinMain after initializing the GC. Useful for WinCE. + Incompatible with GC_DLL. + +GC_REGISTER_MEM_PRIVATE (Win32 only) Force to register MEM_PRIVATE R/W + sections as data roots. Might be needed for some WinCE 6.0+ custom builds. + (May result in numerous "Data Abort" messages logged to WinCE debugging + console.) Incompatible with GCC toolchains for WinCE. + +NO_GETENV Prevents the collector from looking at environment variables. + These may otherwise alter its configuration, or turn off GC altogether. + I don't know of a reason to disable this, except possibly if the resulting + process runs as a privileged user. (This is on by default for WinCE.) + +EMPTY_GETENV_RESULTS Define to workaround a reputed Wine bug in getenv + (getenv() may return an empty string instead of NULL for a missing entry). + +GC_READ_ENV_FILE (Win32 only) Read environment variables from the GC "env" + file (named as the program name plus ".gc.env" extension). Useful for WinCE + targets (which have no getenv()). In the file, every variable is specified + in a separate line and the format is as "=" (without spaces). + A comment line may start with any character except for the Latin letters, + the digits and the underscore ('_'). The file encoding is Latin-1. + +USE_GLOBAL_ALLOC (Win32 only) Use GlobalAlloc() instead of VirtualAlloc() + to allocate the heap. May be needed to work around a Windows NT/2000 issue. + Incompatible with USE_MUNMAP. See README.win32 for details. + +MAKE_BACK_GRAPH Enable GC_PRINT_BACK_HEIGHT environment variable. + See README.environment for details. Experimental. Limited platform + support. Implies DBG_HDRS_ALL. All allocation should be done using + the debug interface. + +GC_PRINT_BACK_HEIGHT Permanently turn on back-height printing mode + (useful when NO_GETENV). See the similar environment variable description + in README.environment. Requires MAKE_BACK_GRAPH defined. + +STUBBORN_ALLOC Allows allocation of "hard to change" objects, and thus + makes incremental collection easier. Was enabled by default until 6.0. + Rarely used, to my knowledge. + +HANDLE_FORK (Unix and Cygwin only) Attempt by default to make GC_malloc() + work in a child process fork()'ed from a multi-threaded parent. Not fully + POSIX-compliant and could be disabled at runtime (before GC_INIT). + +TEST_WITH_SYSTEM_MALLOC Causes gctest to allocate (and leak) large + chunks of memory with the standard system malloc. This will cause the root + set and collected heap to grow significantly if malloc'ed memory is somehow + getting traced by the collector. This has no impact on the generated + library; it only affects the test. + +POINTER_MASK=<0x...> Causes candidate pointers to be AND'ed with the given + mask before being considered. If either this or the following macro is + defined, it will be assumed that all pointers stored in the heap need to be + processed this way. Stack and register pointers will be considered both + with and without processing. These macros are normally needed only to + support systems that use high-order pointer tags. EXPERIMENTAL. + +POINTER_SHIFT= Causes the collector to left shift candidate pointers + by the indicated amount before trying to interpret them. Applied after + POINTER_MASK. EXPERIMENTAL. See also the preceding macro. + +ENABLE_TRACE Enables the GC_TRACE=addr environment setting to do its job. + By default this is not supported in order to keep the marker as fast as + possible. + +DARWIN_DONT_PARSE_STACK Causes the Darwin port to discover thread + stack bounds in the same way as other pthread ports, without trying to + walk the frames on the stack. This is recommended only as a fall-back for + applications that don't support proper stack unwinding. + +GC_NO_THREADS_DISCOVERY (Darwin and Win32+DLL only) Exclude DllMain-based + (on Windows) and task-threads-based (on Darwin) thread registration support. + +GC_INSIDE_DLL (Win32 only) Enable DllMain-based approach of threads + registering even in case GC_DLL is not defined. + +GC_DISCOVER_TASK_THREADS (Darwin and Win32+DLL only) Compile the collector + with the implicitly turned on task-threads-based (on Darwin) or + DllMain-based (on Windows) approach of threads registering. Only for + compatibility and for the case when it is not possible to call + GC_use_threads_discovery() early (before other GC calls). + +USE_PROC_FOR_LIBRARIES Causes the Linux collector to treat writable + memory mappings (as reported by /proc) as roots, if it doesn't have + other information about them. It no longer traverses dynamic loader + data structures to find dynamic library static data. This may be + required for applications that store pointers in mmapped segments without + informing the collector. But it typically performs poorly, especially + since it will scan inactive but cached NPTL thread stacks completely. + +IGNORE_DYNAMIC_LOADING Don't define DYNAMIC_LOADING even if supported by the + platform (that is, build the collector with disabled tracing of dynamic + library data roots). + +NO_PROC_STAT Causes the collector to avoid relying on Linux + "/proc/self/stat". + +NO_GETCONTEXT Causes the collector to not assume the existence of the + getcontext() function on linux-like platforms. This currently happens + implicitly on Darwin, Hurd, or ARM or MIPS hardware. It is explicitly + needed for some old versions of FreeBSD. + +STATIC=static Causes various GC_ symbols that could logically be declared + static to be declared (this is the default if NO_DEBUGGING is specified). + Reduces the number of visible symbols (letting the optimizer do its work + better), which is probably cleaner, but may make some kinds of debugging + and profiling harder. + +GC_DLL Build dynamic-link library (or dynamic shared object). For Unix this + causes the exported symbols to have 'default' visibility (ignored unless + GCC v4+) and the internal ones to have 'hidden' visibility. + +DONT_USE_USER32_DLL (Win32 only) Don't use "user32" DLL import library + (containing MessageBox() entry); useful for a static GC library. + +GC_PREFER_MPROTECT_VDB Choose MPROTECT_VDB manually in case of multiple + virtual dirty bit strategies are implemented (at present useful on Win32 and + Solaris to force MPROTECT_VDB strategy instead of the default GWW_VDB or + PROC_VDB ones). + +GC_IGNORE_GCJ_INFO Disable GCJ-style type information (useful for + debugging on WinCE). + +GC_PRINT_VERBOSE_STATS Permanently turn on verbose logging (useful for + debugging and profiling on WinCE). + +GC_ONLY_LOG_TO_FILE Don't redirect GC stdout and stderr to the log file + specified by GC_LOG_FILE environment variable. Has effect only when the + variable is set (to anything other than "0"). + +GC_ANDROID_LOG (Android only) Output error/debug information to Android log. + +GC_DONT_EXPAND Don't expand the heap unless explicitly requested or forced to. + +GC_USE_ENTIRE_HEAP Causes the non-incremental collector to use the + entire heap before collecting. This sometimes results in more large block + fragmentation, since very large blocks will tend to get broken up during + each GC cycle. It is likely to result in a larger working set, but lower + collection frequencies, and hence fewer instructions executed in the + collector. This macro controls only the default GC_use_entire_heap value. + +GC_INITIAL_HEAP_SIZE= Set the desired default initial heap size + in bytes. + +GC_FREE_SPACE_DIVISOR= Set alternate default GC_free_space_divisor + value. + +GC_TIME_LIMIT= Set alternate default GC_time_limit value + (setting this to GC_TIME_UNLIMITED will essentially disable incremental + collection while leaving generational collection enabled). + +GC_FULL_FREQ= Set alternate default number of partial collections + between full collections (matters only if incremental collection is on). + +NO_CANCEL_SAFE (Posix platforms with threads only) Don't bother trying + to make the collector safe for thread cancellation; cancellation is not + used. (Note that if cancellation is used anyway, threads may end up + getting canceled in unexpected places.) Even without this option, + PTHREAD_CANCEL_ASYNCHRONOUS is never safe with the collector. (We could + argue about its safety without the collector.) + +UNICODE (Win32 only) Use the Unicode variant ('W') of the Win32 API instead + of ANSI/ASCII one ('A'). Useful for WinCE. + +PLATFORM_ANDROID (or __ANDROID__) Compile for Android NDK platform. + +SN_TARGET_PS3 Compile for Sony PS/3. + +USE_GET_STACKBASE_FOR_MAIN (Linux only) Use pthread_attr_getstack() instead + of __libc_stack_end (or instead of any hard-coded value) for getting the + primordial thread stack base (useful if the client modifies the program's + address space). diff --git a/doc/README.rs6000 b/doc/README.rs6000 new file mode 100644 index 0000000..f5630b2 --- /dev/null +++ b/doc/README.rs6000 @@ -0,0 +1,9 @@ +We have so far failed to find a good way to determine the stack base. +It is highly recommended that GC_stackbottom be set explicitly on program +startup. The supplied value sometimes causes failure under AIX 4.1, though +it appears to work under 3.X. HEURISTIC2 seems to work under 4.1, but +involves a substantial performance penalty, and will fail if there is +no limit on stack size. + +There is no thread support. (I assume recent versions of AIX provide +pthreads? I no longer have access to a machine ...) diff --git a/doc/README.sgi b/doc/README.sgi new file mode 100644 index 0000000..eceb345 --- /dev/null +++ b/doc/README.sgi @@ -0,0 +1,40 @@ +Performance of the incremental collector can be greatly enhanced with +-DNO_EXECUTE_PERMISSION. + +The collector should run with all of the -32, -n32 and -64 ABIs. Remember to +define the AS macro in the Makefile to be "as -64", or "as -n32". + +If you use -DREDIRECT_MALLOC=GC_malloc with C++ code, your code should make +at least one explicit call to malloc instead of new to ensure that the proper +version of malloc is linked in. + +Sproc threads are not supported in this version, though there may exist other +ports. + +Pthreads support is provided. This requires that: + +1) You compile the collector with -DGC_IRIX_THREADS specified in the Makefile. + +2) You have the latest pthreads patches installed. + +(Though the collector makes only documented pthread calls, +it relies on signal/threads interactions working just right in ways +that are not required by the standard. It is unlikely that this code +will run on other pthreads platforms. But please tell me if it does.) + +3) Every file that makes thread calls should define IRIX_THREADS and then +include gc.h. Gc.h redefines some of the pthread primitives as macros which +also provide the collector with information it requires. + +4) pthread_cond_wait and pthread_cond_timedwait should be prepared for +premature wakeups. (I believe the pthreads and related standards require this +anyway. Irix pthreads often terminate a wait if a signal arrives. +The garbage collector uses signals to stop threads.) + +5) It is expensive to stop a thread waiting in IO at the time the request is +initiated. Applications with many such threads may not exhibit acceptable +performance with the collector. (Increasing the heap size may help.) + +6) The collector should not be compiled with -DREDIRECT_MALLOC. This +confuses some library calls made by the pthreads implementation, which +expect the standard malloc. diff --git a/doc/README.solaris2 b/doc/README.solaris2 new file mode 100644 index 0000000..8a2669b --- /dev/null +++ b/doc/README.solaris2 @@ -0,0 +1,72 @@ +The collector supports both incremental collection and threads under +Solaris 2. The incremental collector normally retrieves page dirty information +through the appropriate /proc calls. But it can also be configured +(by defining MPROTECT_VDB instead of PROC_VDB in gcconfig.h) to use mprotect +and signals. This may result in shorter pause times, but it is no longer +safe to issue arbitrary system calls that write to the heap. + +Under other UNIX versions, +the collector normally obtains memory through sbrk. There is some reason +to expect that this is not safe if the client program also calls the system +malloc, or especially realloc. The sbrk man page strongly suggests this is +not safe: "Many library routines use malloc() internally, so use brk() +and sbrk() only when you know that malloc() definitely will not be used by +any library routine." This doesn't make a lot of sense to me, since there +seems to be no documentation as to which routines can transitively call malloc. +Nonetheless, under Solaris2, the collector now allocates +memory using mmap by default. (It defines USE_MMAP in gcconfig.h.) +You may want to reverse this decisions if you use -DREDIRECT_MALLOC=... + +Note: +Before you run "make check", you need to set your LD_LIBRARY_PATH correctly +(e.g., to "/usr/local/lib") so that tests can find the shared library +libgcc_s.so.1. Alternatively, you can configure with --disable-shared. + +SOLARIS THREADS: + +Threads support is enabled by configure "--enable-threads=posix" option. +(In case of GCC compiler, multi-threading support is on by default.) +This causes the collector to be compiled with -D GC_THREADS (or +-D GC_SOLARIS_THREADS) ensuring thread safety. +This assumes use of the pthread_ interface. Old style Solaris threads +are no longer supported. +Thread-local allocation is now on by default. Parallel marking is on by +default starting from GC v7.3 but it could be enabled or disabled manually +by the corresponding "--enable/disable-parallel-mark" options. + +It is also essential that gc.h be included in files that call pthread_create, +pthread_join, pthread_detach, or dlopen. gc.h macro defines these to also do +GC bookkeeping, etc. gc.h must be included with one or both of these macros +defined, otherwise these replacements are not visible. A collector built in +this way way only be used by programs that are linked with the threads library. + +Since 5.0 alpha5, dlopen disables collection temporarily, +unless USE_PROC_FOR_LIBRARIES is defined. In some unlikely cases, this +can result in unpleasant heap growth. But it seems better than the +race/deadlock issues we had before. + +If threads are used on an X86 processor with malloc redirected to +GC_malloc, it is necessary to call GC_INIT explicitly before forking the +first thread. (This avoids a deadlock arising from calling GC_thr_init +with the allocation lock held.) + +It appears that there is a problem in using gc_cpp.h in conjunction with +Solaris threads and Sun's C++ runtime. Apparently the overloaded new operator +is invoked by some iostream initialization code before threads are correctly +initialized. As a result, call to thr_self() in garbage collector +initialization SEGV faults. Currently the only known workaround is to not +invoke the garbage collector from a user defined global operator new, or to +have it invoke the garbage-collector's allocators only after main has started. +(Note that the latter requires a moderately expensive test in operator +delete.) + +I encountered "symbol : offset .... is non-aligned" errors. These +appear to be traceable to the use of the GNU assembler with the Sun linker. +The former appears to generate a relocation not understood by the latter. +The fix appears to be to use a consistent tool chain. (As a non-Solaris-expert +my solution involved hacking the libtool script, but I'm sure you can +do something less ugly.) + +Hans-J. Boehm +(The above contains my personal opinions, which are probably not shared +by anyone else.) diff --git a/doc/README.symbian b/doc/README.symbian new file mode 100644 index 0000000..50658c3 --- /dev/null +++ b/doc/README.symbian @@ -0,0 +1,13 @@ +Instructions for Symbian: +1. base version: libgc 7.1 +2. Build: use libgc.mmp +3. Limitations +3.1.No multi-threaded support + +3.2. Be careful with limitation that emulator introduces: Static roots are not +dynamically accessible (there are Symbian APIs for this purpose but are just +stubs, returning irrelevant values). +Consequently, on emulator, you can only use dlls or exe, and retrieve static +roots by calling global_init_static_root per dll (or exe). +On target, only libs are supported, because static roots are retrieved by +linker flags, by calling global_init_static_root in main exe. diff --git a/doc/README.uts b/doc/README.uts new file mode 100644 index 0000000..6be4966 --- /dev/null +++ b/doc/README.uts @@ -0,0 +1,2 @@ +Alistair Crooks supplied the port. He used Lexa C version 2.1.3 with +-Xa to compile. diff --git a/doc/README.win32 b/doc/README.win32 new file mode 100644 index 0000000..0a32c20 --- /dev/null +++ b/doc/README.win32 @@ -0,0 +1,223 @@ +The collector has at various times been compiled under Windows 95 & later, NT, +and XP, with the original Microsoft SDK, with Visual C++ 2.0, 4.0, and 6, with +the GNU win32 tools, with Borland 4.5, with Watcom C, and recently +with the Digital Mars compiler. It is likely that some of these have been +broken in the meantime. Patches are appreciated. + +For historical reasons, +the collector test program "gctest" is linked as a GUI application, +but does not open any windows. Its output normally appears in the file +"gctest.gc.log". It may be started from the file manager. The hour glass +cursor may appear as long as it's running. If it is started from the +command line, it will usually run in the background. Wait a few +minutes (a few seconds on a modern machine) before you check the output. +You should see either a failure indication or a "Collector appears to +work" message. + +The cord test program has not been ported (but should port +easily). A toy editor (cord/de.exe) based on cords (heavyweight +strings represented as trees) has been ported and is included. +It runs fine under either win32 or win32S. It serves as an example +of a true Windows application, except that it was written by a +nonexpert Windows programmer. (There are some peculiarities +in the way files are displayed. The is displayed explicitly +for standard DOS text files. As in the UNIX version, control +characters are displayed explicitly, but in this case as red text. +This may be suboptimal for some tastes and/or sets of default +window colors.) + +In general -DREDIRECT_MALLOC is unlikely to work unless the +application is completely statically linked. + +The collector normally allocates memory from the OS with VirtualAlloc. +This appears to cause problems under Windows NT and Windows 2000 (but +not Windows 95/98) if the memory is later passed to CreateDIBitmap. +To work around this problem, build the collector with -DUSE_GLOBAL_ALLOC. +This is currently incompatible with -DUSE_MUNMAP. (Thanks to Jonathan +Clark for tracking this down. There's some chance this may be fixed +in 6.1alpha4, since we now separate heap sections with an unused page.) + +[Threads and incremental collection are discussed near the end, below.] + +Microsoft Tools +--------------- +For Microsoft development tools, rename NT_MAKEFILE as +MAKEFILE. (Make sure that the CPU environment variable is defined +to be i386.) In order to use the gc_cpp.h C++ interface, all +client code should include gc_cpp.h. + +For historical reasons, +the collector test program "gctest" is linked as a GUI application, +but does not open any windows. Its output appears in the file +"gctest.gc.log". It may be started from the file manager. The hour glass +cursor may appear as long as it's running. If it is started from the +command line, it will usually run in the background. Wait a few +minutes (a few seconds on a modern machine) before you check the output. +You should see either a failure indication or a "Collector appears to +work" message. + +If you would prefer a VC++ .NET project file, ask Hans Boehm. One has +been contributed, but it seems to contain some absolute paths etc., so +it can presumably only be a starting point, and is not in the standard +distribution. It is unclear (to me, Hans Boehm) whether it is feasible to +change that. + +Clients may need to define GC_NOT_DLL before including gc.h, if the +collector was built as a static library (as it normally is in the +absence of thread support). + +GNU Tools +--------- +The collector should be buildable under Cygwin with the +"./configure; make check" machinery. + +MinGW builds (including for x86_64) are available via cross-compilation, e.g. +"./configure --host=i686-pc-mingw32; make check" + +To build the collector as a DLL, pass "--enable-shared --disable-static" to +configure (this will instruct make compile with -D GC_DLL). + +Parallel marker could be enabled via "--enable-parallel-mark". +Memory unmapping could be enabled via "--enable-munmap". + +Borland Tools +------------- +[Rarely tested.] +For Borland tools, use BCC_MAKEFILE. Note that +Borland's compiler defaults to 1 byte alignment in structures (-a1), +whereas Visual C++ appears to default to 8 byte alignment (/Zp8). +The garbage collector in its default configuration EXPECTS AT +LEAST 4 BYTE ALIGNMENT. Thus the BORLAND DEFAULT MUST +BE OVERRIDDEN. (In my opinion, it should usually be anyway. +I expect that -a1 introduces major performance penalties on a +486 or Pentium.) Note that this changes structure layouts. (As a last +resort, gcconfig.h can be changed to allow 1 byte alignment. But +this has significant negative performance implications.) +The Makefile is set up to assume Borland 4.5. If you have another +version, change the line near the top. By default, it does not +require the assembler. If you do have the assembler, I recommend +removing the -DUSE_GENERIC. + +Digital Mars compiler +--------------------- + +Same as MS Visual C++ but might require +-DAO_OLD_STYLE_INTERLOCKED_COMPARE_EXCHANGE option to compile with the +parallel marker enabled. + +Watcom compiler +--------------- + +Ivan V. Demakov's README for the Watcom port: + +The collector has been compiled with Watcom C 10.6 and 11.0. +It runs under win32, win32s, and even under msdos with dos4gw +dos-extender. It should also run under OS/2, though this isn't +tested. Under win32 the collector can be built either as dll +or as static library. + +Note that all compilations were done under Windows 95 or NT. +For unknown reason compiling under Windows 3.11 for NT (one +attempt has been made) leads to broken executables. + +Incremental collection is not supported. + +cord is not ported. + +Before compiling you may need to edit WCC_MAKEFILE to set target +platform, library type (dynamic or static), calling conventions, and +optimization options. + +To compile the collector and testing programs use the command: + wmake -f WCC_MAKEFILE + +All programs using gc should be compiled with 4-byte alignment. +For further explanations on this see comments about Borland. + +If the gc is compiled as dll, the macro "GC_DLL" should be defined before +including "gc.h" (for example, with -DGC_DLL compiler option). It's +important, otherwise resulting programs will not run. + + +Special note for OpenWatcom users: the C (unlike the C++) compiler (of the +latest stable release, not sure for older ones) doesn't force pointer global +variables (i.e. not struct fields, not sure for locals) to be aligned unless +optimizing for speed (e.g., "-ot" option is set); the "-zp" option (or align +pragma) only controls alignment for structs; I don't know whether it's a bug or +a feature (see an old report of same kind - +http://bugzilla.openwatcom.org/show_bug.cgi?id=664), so You are warned. + + +Incremental Collection +---------------------- +There is some support for incremental collection. By default, the +collector chooses between explicit page protection, and GetWriteWatch-based +write tracking automatically, depending on the platform. + +The former is slow and interacts poorly with a debugger. +Pages are protected. Protection faults are caught by a handler +installed at the bottom of the handler +stack. Whenever possible, I recommend adding a call to +GC_enable_incremental at the last possible moment, after most +debugging is complete. No system +calls are wrapped by the collector itself. It may be necessary +to wrap ReadFile calls that use a buffer in the heap, so that the +call does not encounter a protection fault while it's running. +(As usual, none of this is an issue unless GC_enable_incremental +is called.) + +Note that incremental collection is disabled with -DSMALL_CONFIG. + +Threads +------- + +This version of the collector by default handles threads similarly +to other platforms. James Clark's code which tracks threads attached +to the collector DLL still exists, but requires that both +- the collector is built in a DLL with GC_DLL defined, and +- GC_use_threads_discovery() is called before GC initialization, which + in turn must happen before creating additional threads. +We generally recommend avoiding this if possible, since it seems to +be less than 100% reliable. + +Use gc.mak (a.k.a NT_THREADS_MAKEFILE) instead of NT_MAKEFILE +to build a version that supports both kinds of thread tracking. +To build the garbage collector +test with VC++ from the command line, use + +nmake /F ".\gc.mak" CFG="gctest - Win32 Release" + +This requires that the subdirectory gctest\Release exist. +The test program and DLL will reside in the Release directory. + +This version currently supports incremental collection only if it is +enabled before any additional threads are created. + +Since 6.3alpha2, threads are also better supported in static library builds +with Microsoft tools (use NT_STATIC_THREADS_MAKEFILE) and with the GNU +tools. The collector must be built with GC_THREADS defined. +(NT_STATIC_THREADS_MAKEFILE does this implicitly. Under Cygwin, +./configure --enable-threads=posix should be used.) + +For the normal, non-dll-based thread tracking to work properly, +threads should be created with GC_CreateThread or GC_beginthreadex, +and exit normally or call GC_endthreadex or GC_ExitThread. (For +Cygwin, use standard pthread calls instead.) As in the pthread +case, including gc.h will redefine CreateThread, _beginthreadex, +_endthreadex, and ExitThread to call the GC_ versions instead. + +Note that, as usual, GC_CreateThread tends to introduce resource leaks +that are avoided by GC_beginthreadex. There is currently no equivalent of +_beginthread, and it should not be used. + +GC_INIT should be called from the main executable before other GC calls. + +We strongly advise against using the TerminateThread() win32 API call, +especially with the garbage collector. Any use is likely to provoke a +crash in the GC, since it makes it impossible for the collector to +correctly track threads. + +To build the collector for MinGW pthreads-win32 (or other non-Cygwin pthreads +implementation for Windows), use Makefile.direct and explicitly set +GC_WIN32_PTHREADS (or pass --enable-threads=pthreads to configure). +Use -DPTW32_STATIC_LIB for the static threads library. diff --git a/doc/README.win64 b/doc/README.win64 new file mode 100644 index 0000000..416f034 --- /dev/null +++ b/doc/README.win64 @@ -0,0 +1,26 @@ +64-bit Windows on AMD64/Intel EM64T is somewhat supported in the 7.0 +and later release. A collector can be built with Microsoft Visual C++ 2005 +or with mingw-w64 gcc. +More testing would clearly be helpful. + +NT_X64_STATIC_THREADS_MAKEFILE has been used in +this environment. Copy this file to MAKEFILE, and then type "nmake" +in a Visual C++ command line window to build the static library +and the usual test programs. To verify that the collector is +at least somewhat functional, run gctest.exe. This should create +gctest.gc.log after a few seconds. + +This process is completely analogous to NT_STATIC_THREADS_MAKEFILE +for the 32-bit version. + +A similar procedure using NT_X64_THREADS_MAKEFILE should be usable to +build the dynamic library. Test_cpp.exe did not seem to run correctly this +way. It seems that we're getting the wrong instances of operator new/delete +in some cases. The C tests seemed OK. + +Note that currently a few warnings are still generated by default, +and a number of others have been explicitly turned off in the makefile. + +VC++ note: to suppress warnings use -D_CRT_SECURE_NO_DEPRECATE. + +gcc note: -fno-strict-aliasing should be used if optimizing. diff --git a/doc/debugging.html b/doc/debugging.html new file mode 100644 index 0000000..5c24862 --- /dev/null +++ b/doc/debugging.html @@ -0,0 +1,304 @@ + + + + +Debugging Garbage Collector Related Problems + + +

Debugging Garbage Collector Related Problems

+This page contains some hints on +debugging issues specific to +the Boehm-Demers-Weiser conservative garbage collector. +It applies both to debugging issues in client code that manifest themselves +as collector misbehavior, and to debugging the collector itself. +

+If you suspect a bug in the collector itself, it is strongly recommended +that you try the latest collector release before proceeding. +

Bus Errors and Segmentation Violations

+

+If the fault occurred in GC_find_limit, or with incremental collection enabled, +this is probably normal. The collector installs handlers to take care of +these. You will not see these unless you are using a debugger. +Your debugger should allow you to continue. +It's often preferable to tell the debugger to ignore SIGBUS and SIGSEGV +("handle SIGSEGV SIGBUS nostop noprint" in gdb, +"ignore SIGSEGV SIGBUS" in most versions of dbx) +and set a breakpoint in abort. +The collector will call abort if the signal had another cause, +and there was not other handler previously installed. +

+We recommend debugging without incremental collection if possible. +(This applies directly to UNIX systems. +Debugging with incremental collection under win32 is worse. See README.win32.) +

+If the application generates an unhandled SIGSEGV or equivalent, it may +often be easiest to set the environment variable GC_LOOP_ON_ABORT. On many +platforms, this will cause the collector to loop in a handler when the +SIGSEGV is encountered (or when the collector aborts for some other reason), +and a debugger can then be attached to the looping +process. This sidesteps common operating system problems related +to incomplete core files for multi-threaded applications, etc. +

Other Signals

+On most platforms, the multi-threaded version of the collector needs one or +two other signals for internal use by the collector in stopping threads. +It is normally wise to tell the debugger to ignore these. On Linux, +the collector currently uses SIGPWR and SIGXCPU by default. +

Warning Messages About Needing to Allocate Blacklisted Blocks

+The garbage collector generates warning messages of the form +
+Needed to allocate blacklisted block at 0x...
+
+or +
+Repeated allocation of very large block ...
+
+when it needs to allocate a block at a location that it knows to be +referenced by a false pointer. These false pointers can be either permanent +(e.g. a static integer variable that never changes) or temporary. +In the latter case, the warning is largely spurious, and the block will +eventually be reclaimed normally. +In the former case, the program will still run correctly, but the block +will never be reclaimed. Unless the block is intended to be +permanent, the warning indicates a memory leak. +
    +
  1. Ignore these warnings while you are using GC_DEBUG. Some of the routines +mentioned below don't have debugging equivalents. (Alternatively, write +the missing routines and send them to me.) +
  2. Replace allocator calls that request large blocks with calls to +GC_malloc_ignore_off_page or +GC_malloc_atomic_ignore_off_page. You may want to set a +breakpoint in GC_default_warn_proc to help you identify such calls. +Make sure that a pointer to somewhere near the beginning of the resulting block +is maintained in a (preferably volatile) variable as long as +the block is needed. +
  3. +If the large blocks are allocated with realloc, we suggest instead allocating +them with something like the following. Note that the realloc size increment +should be fairly large (e.g. a factor of 3/2) for this to exhibit reasonable +performance. But we all know we should do that anyway. +
    +void * big_realloc(void *p, size_t new_size)
+{
+    size_t old_size = GC_size(p);
+    void * result;
+
+    if (new_size <= 10000) return(GC_realloc(p, new_size));
+    if (new_size <= old_size) return(p);
+    result = GC_malloc_ignore_off_page(new_size);
+    if (result == 0) return(0);
+    memcpy(result,p,old_size);
+    GC_free(p);
+    return(result);
+}
+
    + +
  4. In the unlikely case that even relatively small object +(<20KB) allocations are triggering these warnings, then your address +space contains lots of "bogus pointers", i.e. values that appear to +be pointers but aren't. Usually this can be solved by using GC_malloc_atomic +or the routines in gc_typed.h to allocate large pointer-free regions of bitmaps, etc. Sometimes the problem can be solved with trivial changes of encoding +in certain values. It is possible, to identify the source of the bogus +pointers by building the collector with -DPRINT_BLACK_LIST, +which will cause it to print the "bogus pointers", along with their location. + +
  5. If you get only a fixed number of these warnings, you are probably only +introducing a bounded leak by ignoring them. If the data structures being +allocated are intended to be permanent, then it is also safe to ignore them. +The warnings can be turned off by calling GC_set_warn_proc with a procedure +that ignores these warnings (e.g. by doing absolutely nothing). +
+ +

The Collector References a Bad Address in GC_malloc

+ +This typically happens while the collector is trying to remove an entry from +its free list, and the free list pointer is bad because the free list link +in the last allocated object was bad. +

+With > 99% probability, you wrote past the end of an allocated object. +Try setting GC_DEBUG before including gc.h and +allocating with GC_MALLOC. This will try to detect such +overwrite errors. + +

Unexpectedly Large Heap

+ +Unexpected heap growth can be due to one of the following: +
    +
  1. Data structures that are being unintentionally retained. This +is commonly caused by data structures that are no longer being used, +but were not cleared, or by caches growing without bounds. +
  2. Pointer misidentification. The garbage collector is interpreting +integers or other data as pointers and retaining the "referenced" +objects. A common symptom is that GC_dump() shows much of the heap +as black-listed. +
  3. Heap fragmentation. This should never result in unbounded growth, +but it may account for larger heaps. This is most commonly caused +by allocation of large objects. On some platforms it can be reduced +by building with -DUSE_MUNMAP, which will cause the collector to unmap +memory corresponding to pages that have not been recently used. +
  4. Per object overhead. This is usually a relatively minor effect, but +it may be worth considering. If the collector recognizes interior +pointers, object sizes are increased, so that one-past-the-end pointers +are correctly recognized. The collector can be configured not to do this +(-DDONT_ADD_BYTE_AT_END). +

    +The collector rounds up object sizes so the result fits well into the +chunk size (HBLKSIZE, normally 4K on 32 bit machines, 8K +on 64 bit machines) used by the collector. Thus it may be worth avoiding +objects of size 2K + 1 (or 2K if a byte is being added at the end.) +

+The last two cases can often be identified by looking at the output +of a call to GC_dump(). Among other things, it will print the +list of free heap blocks, and a very brief description of all chunks in +the heap, the object sizes they correspond to, and how many live objects +were found in the chunk at the last collection. +

+Growing data structures can usually be identified by +

    +
  1. Building the collector with -DKEEP_BACK_PTRS, +
  2. Preferably using debugging allocation (defining GC_DEBUG +before including gc.h and allocating with GC_MALLOC), +so that objects will be identified by their allocation site, +
  3. Running the application long enough so +that most of the heap is composed of "leaked" memory, and +
  4. Then calling GC_generate_random_backtrace() from gc_backptr.h +a few times to determine why some randomly sampled objects in the heap are +being retained. +
+

+The same technique can often be used to identify problems with false +pointers, by noting whether the reference chains printed by +GC_generate_random_backtrace() involve any misidentified pointers. +An alternate technique is to build the collector with +-DPRINT_BLACK_LIST which will cause it to report values that +are almost, but not quite, look like heap pointers. It is very likely that +actual false pointers will come from similar sources. +

+In the unlikely case that false pointers are an issue, it can usually +be resolved using one or more of the following techniques: +

    +
  1. Use GC_malloc_atomic for objects containing no pointers. +This is especially important for large arrays containing compressed data, +pseudo-random numbers, and the like. It is also likely to improve GC +performance, perhaps drastically so if the application is paging. +
  2. If you allocate large objects containing only +one or two pointers at the beginning, either try the typed allocation +primitives is gc_typed.h, or separate out the pointer-free component. +
  3. Consider using GC_malloc_ignore_off_page() +to allocate large objects. (See gc.h and above for details. +Large means > 100K in most environments.) +
  4. If your heap size is larger than 100MB or so, build the collector with +-DLARGE_CONFIG. +This allows the collector to keep more precise black-list +information. +
  5. If you are using heaps close to, or larger than, a gigabyte on a 32-bit +machine, you may want to consider moving to a platform with 64-bit pointers. +This is very likely to resolve any false pointer issues. +
+

Prematurely Reclaimed Objects

+The usual symptom of this is a segmentation fault, or an obviously overwritten +value in a heap object. This should, of course, be impossible. In practice, +it may happen for reasons like the following: +
    +
  1. The collector did not intercept the creation of threads correctly in +a multi-threaded application, e.g. because the client called +pthread_create without including gc.h, which redefines it. +
  2. The last pointer to an object in the garbage collected heap was stored +somewhere were the collector couldn't see it, e.g. in an +object allocated with system malloc, in certain types of +mmaped files, +or in some data structure visible only to the OS. (On some platforms, +thread-local storage is one of these.) +
  3. The last pointer to an object was somehow disguised, e.g. by +XORing it with another pointer. +
  4. Incorrect use of GC_malloc_atomic or typed allocation. +
  5. An incorrect GC_free call. +
  6. The client program overwrote an internal garbage collector data structure. +
  7. A garbage collector bug. +
  8. (Empirically less likely than any of the above.) A compiler optimization +that disguised the last pointer. +
+The following relatively simple techniques should be tried first to narrow +down the problem: +
    +
  1. If you are using the incremental collector try turning it off for +debugging. +
  2. If you are using shared libraries, try linking statically. If that works, +ensure that DYNAMIC_LOADING is defined on your platform. +
  3. Try to reproduce the problem with fully debuggable unoptimized code. +This will eliminate the last possibility, as well as making debugging easier. +
  4. Try replacing any suspect typed allocation and GC_malloc_atomic +calls with calls to GC_malloc. +
  5. Try removing any GC_free calls (e.g. with a suitable +#define). +
  6. Rebuild the collector with -DGC_ASSERTIONS. +
  7. If the following works on your platform (i.e. if gctest still works +if you do this), try building the collector with +-DREDIRECT_MALLOC=GC_malloc_uncollectable. This will cause +the collector to scan memory allocated with malloc. +
+If all else fails, you will have to attack this with a debugger. +Suggested steps: +
    +
  1. Call GC_dump() from the debugger around the time of the failure. Verify +that the collectors idea of the root set (i.e. static data regions which +it should scan for pointers) looks plausible. If not, i.e. if it doesn't +include some static variables, report this as +a collector bug. Be sure to describe your platform precisely, since this sort +of problem is nearly always very platform dependent. +
  2. Especially if the failure is not deterministic, try to isolate it to +a relatively small test case. +
  3. Set a break point in GC_finish_collection. This is a good +point to examine what has been marked, i.e. found reachable, by the +collector. +
  4. If the failure is deterministic, run the process +up to the last collection before the failure. +Note that the variable GC_gc_no counts collections and can be used +to set a conditional breakpoint in the right one. It is incremented just +before the call to GC_finish_collection. +If object p was prematurely recycled, it may be helpful to +look at *GC_find_header(p) at the failure point. +The hb_last_reclaimed field will identify the collection number +during which its block was last swept. +
  5. Verify that the offending object still has its correct contents at +this point. +Then call GC_is_marked(p) from the debugger to verify that the +object has not been marked, and is about to be reclaimed. Note that +GC_is_marked(p) expects the real address of an object (the +address of the debug header if there is one), and thus it may +be more appropriate to call GC_is_marked(GC_base(p)) +instead. +
  6. Determine a path from a root, i.e. static variable, stack, or +register variable, +to the reclaimed object. Call GC_is_marked(q) for each object +q along the path, trying to locate the first unmarked object, say +r. +
  7. If r is pointed to by a static root, +verify that the location +pointing to it is part of the root set printed by GC_dump(). If it +is on the stack in the main (or only) thread, verify that +GC_stackbottom is set correctly to the base of the stack. If it is +in another thread stack, check the collector's thread data structure +(GC_thread[] on several platforms) to make sure that stack bounds +are set correctly. +
  8. If r is pointed to by heap object s, check that the +collector's layout description for s is such that the pointer field +will be scanned. Call *GC_find_header(s) to look at the descriptor +for the heap chunk. The hb_descr field specifies the layout +of objects in that chunk. See gc_mark.h for the meaning of the descriptor. +(If its low order 2 bits are zero, then it is just the length of the +object prefix to be scanned. This form is always used for objects allocated +with GC_malloc or GC_malloc_atomic.) +
  9. If the failure is not deterministic, you may still be able to apply some +of the above technique at the point of failure. But remember that objects +allocated since the last collection will not have been marked, even if the +collector is functioning properly. On some platforms, the collector +can be configured to save call chains in objects for debugging. +Enabling this feature will also cause it to save the call stack at the +point of the last GC in GC_arrays._last_stack. +
  10. When looking at GC internal data structures remember that a number +of GC_xxx variables are really macro defined to +GC_arrays._xxx, so that +the collector can avoid scanning them. +
+ + diff --git a/doc/doc.am b/doc/doc.am new file mode 100644 index 0000000..8968f1e --- /dev/null +++ b/doc/doc.am @@ -0,0 +1,50 @@ +# +# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +# OR IMPLIED. ANY USE IS AT YOUR OWN RISK. +# +# Permission is hereby granted to use or copy this program +# for any purpose, provided the above notices are retained on all copies. +# Permission to modify the code and to distribute modified code is granted, +# provided the above notices are retained, and a notice that the code was +# modified is included with the above copyright notice. + +## Process this file with automake to produce Makefile.in. + +# installed documentation +if ENABLE_DOCS +dist_doc_DATA = \ + AUTHORS \ + README.md \ + doc/README.DGUX386 \ + doc/README.Mac \ + doc/README.OS2 \ + doc/README.amiga \ + doc/README.arm.cross \ + doc/README.autoconf \ + doc/README.cmake \ + doc/README.cords \ + doc/README.darwin \ + doc/README.environment \ + doc/README.ews4800 \ + doc/README.hp \ + doc/README.linux \ + doc/README.macros \ + doc/README.rs6000 \ + doc/README.sgi \ + doc/README.solaris2 \ + doc/README.symbian \ + doc/README.uts \ + doc/README.win32 \ + doc/README.win64 \ + doc/debugging.html \ + doc/finalization.html \ + doc/gc.man \ + doc/gcdescr.html \ + doc/gcinterface.html \ + doc/leak.html \ + doc/overview.html \ + doc/porting.html \ + doc/scale.html \ + doc/simple_example.html \ + doc/tree.html +endif diff --git a/doc/finalization.html b/doc/finalization.html new file mode 100644 index 0000000..3733c0c --- /dev/null +++ b/doc/finalization.html @@ -0,0 +1,190 @@ + + +Finalization in the Boehm-Demers-Weiser collector + + +

Finalization

+Many garbage collectors provide a facility for executing user code +just before an object is collected. This can be used to reclaim any +system resources or non-garbage-collected memory associated with the +object. +Experience has shown that this can be a useful facility. +It is indispensable in cases in which system resources are embedded +in complex data structures (e.g. file descriptors +in the cord package). +

+Our collector provides the necessary functionality through +GC_register_finalizer in +gc.h, or by +inheriting from gc_cleanup +in gc_cpp.h. +

+However, finalization should not be used in the same way as C++ +destructors. In well-written programs there will typically be +very few uses of finalization. (Garbage collected programs that +interact with explicitly memory-managed libraries may be an exception.) +

+In general the following guidelines should be followed: +

    +
  • +Actions that must be executed promptly do not belong in finalizers. +They should be handled by explicit calls in the code (or C++ +destructors if you prefer). If you expect the action to occur at +a specific point, this is probably not hard. +
  • +Finalizers are intended for resource reclamation. +
  • +Scarce system resources should be managed explicitly whenever +convenient. Use finalizers only as a backup mechanism for the +cases that would be hard to handle explicitly. +
  • +If scarce resources are managed with finalization, the allocation +routine for that resource (e.g. open for file handles) should force +a garbage collection (two if that doesn't suffice) if it finds itself +short of the resource. +
  • +If extremely scarce resources are managed by finalization (e.g. +file descriptors on systems which have a limit of 20 open files), +it may be necessary to introduce a descriptor caching scheme to +hide the resource limit. +(E.g., the program would keep real file descriptors +for the 20 most recently used logically open files. +Any other needed files would be closed after saving their state. +They would then be reopened on demand. +Finalization would logically close the file, closing the +real descriptor only if it happened to be cached.) +Note that most modern systems (e.g. Irix®) allow hundreds or +thousands of open files, and this is typically not an issue. +
  • +Finalization code may +be run anyplace an allocation or other call to the collector +takes place. +In multi-threaded programs, finalizers have to obey the normal +locking conventions to ensure safety. +Code run directly from finalizers should not acquire locks that may +be held during allocation. This restriction can be easily circumvented +by registering a finalizer which enqueues the real action for execution +in a separate thread. +

    +In single-threaded code, it is also often easiest to have finalizers +queue actions, which are then explicitly run during an +explicit call by the user's program. +

+

Topologically Ordered Finalization

+Our conservative garbage collector supports +a form of finalization +(with GC_register_finalizer) +in which objects are finalized in topological +order. If A points to B, and both are registered for +finalization, it is guaranteed the A will be finalized first. +This usually guarantees that finalization procedures see only +unfinalized objects. +

+This decision is often questioned, particularly since it has an obvious +disadvantage. The current implementation finalizes long chains of +finalizable objects one per collection. This is hard to avoid, since +the first finalizer invoked may store a pointer to the rest of the chain +in a global variable, making it accessible again. Or it may mutate the +rest of the chain. +

+Cycles involving one or more finalizable objects are never finalized. +

+Why topological ordering? +

+It is important to keep in mind that the choice of finalization ordering +matters only in relatively rare cases. In spite of the fact that it has +received a lot of discussion, it is not one of the more important +decisions in designing a system. Many, especially smaller, applications +will never notice the difference. Nonetheless, we believe that topologically +ordered finalization is the right choice. +

+To understand the justification, observe that if As +finalization procedure does not refer to B, we could fairly easily have +avoided the dependency. We could have split A into A' +and A'' such that any references to A become references to +A', A' points to A'' but not vice-versa, only fields +needed for finalization are stored in A'', and A'' is enabled +for finalization. (GC_register_disappearing_link provides an +alternative mechanism that does not require breaking up objects.) +

+Thus assume that A actually does need access to B during +finalization. To make things concrete, assume that B is +finalizable because it holds a pointer to a C object, which must be +explicitly deallocated. (This is likely to be one of the most common +uses of finalization.) If B happens to be finalized first, +A will see a dangling pointer during its finalization. But a +principal goal of garbage collection was to avoid dangling pointers. +

+Note that the client program could enforce topological ordering +even if the system didn't. A pointer to B could be stored in +some globally visible place, where it is cleared only by As +finalizer. But this puts the burden to ensure safety back on the +programmer. +

+With topologically ordered finalization, the programmer +can fail to split an object, thus leaving an accidental cycle. This +results in a leak, which is arguably less dangerous than a dangling +pointer. More importantly, it is much easier to diagnose, +since the garbage collector would have to go out of its way not to +notice finalization cycles. It can trivially report them. +

+Furthermore unordered finalization does not really solve the problem +of cycles. Consider the above case in which As +finalization procedure depends on B, and thus a pointer to B +is stored in a global data structure, to be cleared by As finalizer. +If there is an accidental pointer from B back to A, and +thus a cycle, neither B nor A will become unreachable. +The leak is there, just as in the topologically ordered case, but it is +hidden from easy diagnosis. +

+A number of alternative finalization orderings have been proposed, e.g. +based on statically assigned priorities. In our opinion, these are much +more likely to require complex programming discipline to use in a large +modular system. (Some of them, e.g. Guardians proposed by Dybvig, +Bruggeman, and Eby, do avoid some problems which arise in combination +with certain other collection algorithms.) +

+Fundamentally, a garbage collector assumes that objects reachable +via pointer chains may be accessed, and thus should be preserved. +Topologically ordered finalization simply extends this to object finalization; +an finalizable object reachable from another finalizer via a pointer chain +is presumed to be accessible by the finalizer, and thus should not be +finalized. + +

Programming with topological finalization

+Experience with Cedar has shown that cycles or long chains of finalizable +objects are typically not a problem. +Finalizable objects are typically rare. +There are several ways to reduce spurious dependencies between finalizable +objects. Splitting objects as discussed above is one technique. +The collector also provides GC_register_disappearing_link, which +explicitly nils a pointer before determining finalization ordering. +

+Some so-called "operating systems" fail to clean up some resources associated +with a process. These resources must be deallocated at all cost before +process exit whether or not they are still referenced. Probably the best +way to deal with those is by not relying exclusively on finalization. +They should be registered in a table of weak pointers (implemented as +disguised pointers cleared by the finalization procedure that deallocates +the resource). If any references are still left at process exit, they +can be explicitly deallocated then. + +

Getting around topological finalization ordering

+There are certain situations in which cycles between finalizable objects are +genuinely unavoidable. Most notably, C++ compilers introduce self-cycles +to represent inheritance. GC_register_finalizer_ignore_self tells the +finalization part of the collector to ignore self cycles. +This is used by the C++ interface. +

+Finalize.c actually contains an intentionally undocumented mechanism +for registering a finalizable object with user-defined dependencies. +The problem is that this dependency information is also used for memory +reclamation, not just finalization ordering. Thus misuse can result in +dangling pointers even if finalization doesn't create any. +The risk of dangling pointers can be eliminated by building the collector +with -DJAVA_FINALIZATION. This forces objects reachable from finalizers +to be marked, even though this dependency is not considered for finalization +ordering. + + + diff --git a/doc/gc.man b/doc/gc.man new file mode 100644 index 0000000..b5070d3 --- /dev/null +++ b/doc/gc.man @@ -0,0 +1,103 @@ +.TH GC_MALLOC 1L "2 October 2003" +.SH NAME +GC_malloc, GC_malloc_atomic, GC_free, GC_realloc, GC_enable_incremental, GC_register_finalizer, GC_malloc_ignore_off_page, GC_malloc_atomic_ignore_off_page, GC_set_warn_proc \- Garbage collecting malloc replacement +.SH SYNOPSIS +#include "gc.h" +.br +void * GC_malloc(size_t size); +.br +void GC_free(void *ptr); +.br +void * GC_realloc(void *ptr, size_t size); +.br +.sp +cc ... -lgc +.LP +.SH DESCRIPTION +.I GC_malloc +and +.I GC_free +are plug-in replacements for standard malloc and free. However, +.I +GC_malloc +will attempt to reclaim inaccessible space automatically by invoking a conservative garbage collector at appropriate points. The collector traverses all data structures accessible by following pointers from the machines registers, stack(s), data, and bss segments. Inaccessible structures will be reclaimed. A machine word is considered to be a valid pointer if it is an address inside an object allocated by +.I +GC_malloc +or friends. +.LP +In most cases it is preferable to call the macros GC_MALLOC, GC_FREE, etc. +instead of calling GC_malloc and friends directly. This allows debugging +versions of the routines to be substituted by defining GC_DEBUG before +including gc.h. +.LP +See the documentation in the include files gc_cpp.h and gc_allocator.h, +as well as the gcinterface.html file in the distribution, +for an alternate, C++ specific interface to the garbage collector. +Note that C++ programs generally +need to be careful to ensure that all allocated memory (whether via new, +malloc, or STL allocators) that may point to garbage collected memory +is either itself garbage collected, or at least traced by the collector. +.LP +Unlike the standard implementations of malloc, +.I +GC_malloc +clears the newly allocated storage. +.I +GC_malloc_atomic +does not. Furthermore, it informs the collector that the resulting object will never contain any pointers, and should therefore not be scanned by the collector. +.LP +.I +GC_free +can be used to deallocate objects, but its use is optional, and generally discouraged. +.I +GC_realloc +has the standard realloc semantics. It preserves pointer-free-ness. +.I +GC_register_finalizer +allows for registration of functions that are invoked when an object becomes inaccessible. +.LP +The garbage collector tries to avoid allocating memory at locations that already appear to be referenced before allocation. (Such apparent ``pointers'' are usually large integers and the like that just happen to look like an address.) This may make it hard to allocate very large objects. An attempt to do so may generate a warning. +.LP +.I +GC_malloc_ignore_off_page +and +.I +GC_malloc_atomic_ignore_off_page +inform the collector that the client code will always maintain a pointer to near the beginning of the object (within the first 512 bytes), and that pointers beyond that can be ignored by the collector. This makes it much easier for the collector to place large objects. These are recommended for large object allocation. (Objects expected to be larger than about 100KBytes should be allocated this way.) +.LP +It is also possible to use the collector to find storage leaks in programs destined to be run with standard malloc/free. The collector can be compiled for thread-safe operation. Unlike standard malloc, it is safe to call malloc after a previous malloc call was interrupted by a signal, provided the original malloc call is not resumed. +.LP +The collector may, on rare occasion produce warning messages. On UNIX machines these appear on stderr. Warning messages can be filtered, redirected, or ignored with +.I +GC_set_warn_proc +This is recommended for production code. See gc.h for details. +.LP +Fully portable code should call +.I +GC_INIT +from the main program before making any other GC calls. +On most platforms this does nothing and the collector is initialized on first use. +On a few platforms explicit initialization is necessary. And it can never hurt. +.LP +Debugging versions of many of the above routines are provided as macros. Their names are identical to the above, but consist of all capital letters. If GC_DEBUG is defined before gc.h is included, these routines do additional checking, and allow the leak detecting version of the collector to produce slightly more useful output. Without GC_DEBUG defined, they behave exactly like the lower-case versions. +.LP +On some machines, collection will be performed incrementally after a call to +.I +GC_enable_incremental. +This may temporarily write protect pages in the heap. See the README file for more information on how this interacts with system calls that write to the heap. +.LP +Other facilities not discussed here include limited facilities to support incremental collection on machines without appropriate VM support, provisions for providing more explicit object layout information to the garbage collector, more direct support for ``weak'' pointers, support for ``abortable'' garbage collections during idle time, etc. +.LP +.SH "SEE ALSO" +The README and gc.h files in the distribution. More detailed definitions of the functions exported by the collector are given there. (The above list is not complete.) +.LP +The web site at http://www.hboehm.info/gc/ (or https://github.com/ivmai/bdwgc/). +.LP +Boehm, H., and M. Weiser, "Garbage Collection in an Uncooperative Environment", +"Software Practice & Experience", September 1988, pp. 807-820. +.LP +The malloc(3) man page. +.LP +.SH AUTHOR +Hans-J. Boehm (boehm@acm.org). +Some of the code was written by others, most notably Alan Demers. diff --git a/doc/gcdescr.html b/doc/gcdescr.html new file mode 100644 index 0000000..524a14f --- /dev/null +++ b/doc/gcdescr.html @@ -0,0 +1,617 @@ + + + Conservative GC Algorithmic Overview + Hans-J. Boehm, HP Labs (Some of this was written at SGI) + + +

This is under construction, and may always be.

+

Conservative GC Algorithmic Overview

+

+This is a description of the algorithms and data structures used in our +conservative garbage collector. I expect the level of detail to increase +with time. For a survey of GC algorithms, see for example + Paul Wilson's +excellent paper. For an overview of the collector interface, +see here. +

+This description is targeted primarily at someone trying to understand the +source code. It specifically refers to variable and function names. +It may also be useful for understanding the algorithms at a higher level. +

+The description here assumes that the collector is used in default mode. +In particular, we assume that it used as a garbage collector, and not just +a leak detector. We initially assume that it is used in stop-the-world, +non-incremental mode, though the presence of the incremental collector +will be apparent in the design. +We assume the default finalization model, but the code affected by that +is very localized. +

Introduction

+The garbage collector uses a modified mark-sweep algorithm. Conceptually +it operates roughly in four phases, which are performed occasionally +as part of a memory allocation: + +
    + +
  1. +Preparation Each object has an associated mark bit. +Clear all mark bits, indicating that all objects +are potentially unreachable. + +
  2. +Mark phase Marks all objects that can be reachable via chains of +pointers from variables. Often the collector has no real information +about the location of pointer variables in the heap, so it +views all static data areas, stacks and registers as potentially containing +pointers. Any bit patterns that represent addresses inside +heap objects managed by the collector are viewed as pointers. +Unless the client program has made heap object layout information +available to the collector, any heap objects found to be reachable from +variables are again scanned similarly. + +
  3. +Sweep phase Scans the heap for inaccessible, and hence unmarked, +objects, and returns them to an appropriate free list for reuse. This is +not really a separate phase; even in non incremental mode this is operation +is usually performed on demand during an allocation that discovers an empty +free list. Thus the sweep phase is very unlikely to touch a page that +would not have been touched shortly thereafter anyway. + +
  4. +Finalization phase Unreachable objects which had been registered +for finalization are enqueued for finalization outside the collector. + +
+ +

+The remaining sections describe the memory allocation data structures, +and then the last 3 collection phases in more detail. We conclude by +outlining some of the additional features implemented in the collector. + +

Allocation

+The collector includes its own memory allocator. The allocator obtains +memory from the system in a platform-dependent way. Under UNIX, it +uses either malloc, sbrk, or mmap. +

+Most static data used by the allocator, as well as that needed by the +rest of the garbage collector is stored inside the +_GC_arrays structure. +This allows the garbage collector to easily ignore the collectors own +data structures when it searches for root pointers. Other allocator +and collector internal data structures are allocated dynamically +with GC_scratch_alloc. GC_scratch_alloc does not +allow for deallocation, and is therefore used only for permanent data +structures. +

+The allocator allocates objects of different kinds. +Different kinds are handled somewhat differently by certain parts +of the garbage collector. Certain kinds are scanned for pointers, +others are not. Some may have per-object type descriptors that +determine pointer locations. Or a specific kind may correspond +to one specific object layout. Two built-in kinds are uncollectible. +One (STUBBORN) is immutable without special precautions. +In spite of that, it is very likely that most C clients of the +collector currently +use at most two kinds: NORMAL and PTRFREE objects. +The GCJ runtime +also makes heavy use of a kind (allocated with GC_gcj_malloc) that stores +type information at a known offset in method tables. +

+The collector uses a two level allocator. A large block is defined to +be one larger than half of HBLKSIZE, which is a power of 2, +typically on the order of the page size. +

+Large block sizes are rounded up to +the next multiple of HBLKSIZE and then allocated by +GC_allochblk. Recent versions of the collector +use an approximate best fit algorithm by keeping free lists for +several large block sizes. +The actual +implementation of GC_allochblk +is significantly complicated by black-listing issues +(see below). +

+Small blocks are allocated in chunks of size HBLKSIZE. +Each chunk is +dedicated to only one object size and kind. +

+The allocator maintains +separate free lists for each size and kind of object. +Associated with each kind is an array of free list pointers, +with entry freelist[i] pointing to +a free list of size i objects. +In recent versions of the +collector, index i is expressed in granules, which are the +minimum allocatable unit, typically 8 or 16 bytes. +The free lists themselves are +linked through the first word in each object (see obj_link() +macro). +

+Once a large block is split for use in smaller objects, it can only +be used for objects of that size, unless the collector discovers a completely +empty chunk. Completely empty chunks are restored to the appropriate +large block free list. +

+In order to avoid allocating blocks for too many distinct object sizes, +the collector normally does not directly allocate objects of every possible +request size. Instead, the request is rounded up to one of a smaller number +of allocated sizes, for which free lists are maintained. The exact +allocated sizes are computed on demand, but subject to the constraint +that they increase roughly in geometric progression. Thus objects +requested early in the execution are likely to be allocated with exactly +the requested size, subject to alignment constraints. +See GC_init_size_map for details. +

+The actual size rounding operation during small object allocation is +implemented as a table lookup in GC_size_map which maps +a requested allocation size in bytes to a number of granules. +

+Both collector initialization and computation of allocated sizes are +handled carefully so that they do not slow down the small object fast +allocation path. An attempt to allocate before the collector is initialized, +or before the appropriate GC_size_map entry is computed, +will take the same path as an allocation attempt with an empty free list. +This results in a call to the slow path code (GC_generic_malloc_inner) +which performs the appropriate initialization checks. +

+In non-incremental mode, we make a decision about whether to garbage collect +whenever an allocation would otherwise have failed with the current heap size. +If the total amount of allocation since the last collection is less than +the heap size divided by GC_free_space_divisor, we try to +expand the heap. Otherwise, we initiate a garbage collection. This ensures +that the amount of garbage collection work per allocated byte remains +constant. +

+The above is in fact an oversimplification of the real heap expansion +and GC triggering heuristic, which adjusts slightly for root size +and certain kinds of +fragmentation. In particular: +

    +
  • Programs with a large root set size and +little live heap memory will expand the heap to amortize the cost of +scanning the roots. +
  • Versions 5.x of the collector actually collect more frequently in +nonincremental mode. The large block allocator usually refuses to split +large heap blocks once the garbage collection threshold is +reached. This often has the effect of collecting well before the +heap fills up, thus reducing fragmentation and working set size at the +expense of GC time. Versions 6.x choose an intermediate strategy depending +on how much large object allocation has taken place in the past. +(If the collector is configured to unmap unused pages, versions 6.x +use the 5.x strategy.) +
  • In calculating the amount of allocation since the last collection we +give partial credit for objects we expect to be explicitly deallocated. +Even if all objects are explicitly managed, it is often desirable to collect +on rare occasion, since that is our only mechanism for coalescing completely +empty chunks. +
+

+It has been suggested that this should be adjusted so that we favor +expansion if the resulting heap still fits into physical memory. +In many cases, that would no doubt help. But it is tricky to do this +in a way that remains robust if multiple application are contending +for a single pool of physical memory. + +

Mark phase

+ +At each collection, the collector marks all objects that are +possibly reachable from pointer variables. Since it cannot generally +tell where pointer variables are located, it scans the following +root segments for pointers: +
    +
  • The registers. Depending on the architecture, this may be done using +assembly code, or by calling a setjmp-like function which saves +register contents on the stack. +
  • The stack(s). In the case of a single-threaded application, +on most platforms this +is done by scanning the memory between (an approximation of) the current +stack pointer and GC_stackbottom. (For Itanium, the register stack +scanned separately.) The GC_stackbottom variable is set in +a highly platform-specific way depending on the appropriate configuration +information in gcconfig.h. Note that the currently active +stack needs to be scanned carefully, since callee-save registers of +client code may appear inside collector stack frames, which may +change during the mark process. This is addressed by scanning +some sections of the stack "eagerly", effectively capturing a snapshot +at one point in time. +
  • Static data region(s). In the simplest case, this is the region +between DATASTART and DATAEND, as defined in +gcconfig.h. However, in most cases, this will also involve +static data regions associated with dynamic libraries. These are +identified by the mostly platform-specific code in dyn_load.c. +
+The marker maintains an explicit stack of memory regions that are known +to be accessible, but that have not yet been searched for contained pointers. +Each stack entry contains the starting address of the block to be scanned, +as well as a descriptor of the block. If no layout information is +available for the block, then the descriptor is simply a length. +(For other possibilities, see gc_mark.h.) +

+At the beginning of the mark phase, all root segments +(as described above) are pushed on the +stack by GC_push_roots. (Registers and eagerly processed +stack sections are processed by pushing the referenced objects instead +of the stack section itself.) If ALL_INTERIOR_POINTERS is not +defined, then stack roots require special treatment. In this case, the +normal marking code ignores interior pointers, but GC_push_all_stack +explicitly checks for interior pointers and pushes descriptors for target +objects. +

+The marker is structured to allow incremental marking. +Each call to GC_mark_some performs a small amount of +work towards marking the heap. +It maintains +explicit state in the form of GC_mark_state, which +identifies a particular sub-phase. Some other pieces of state, most +notably the mark stack, identify how much work remains to be done +in each sub-phase. The normal progression of mark states for +a stop-the-world collection is: +

    +
  1. MS_INVALID indicating that there may be accessible unmarked +objects. In this case GC_objects_are_marked will simultaneously +be false, so the mark state is advanced to +
  2. MS_PUSH_UNCOLLECTABLE indicating that it suffices to push +uncollectible objects, roots, and then mark everything reachable from them. +Scan_ptr is advanced through the heap until all uncollectible +objects are pushed, and objects reachable from them are marked. +At that point, the next call to GC_mark_some calls +GC_push_roots to push the roots. It the advances the +mark state to +
  3. MS_ROOTS_PUSHED asserting that once the mark stack is +empty, all reachable objects are marked. Once in this state, we work +only on emptying the mark stack. Once this is completed, the state +changes to +
  4. MS_NONE indicating that reachable objects are marked. +
+ +The core mark routine GC_mark_from, is called +repeatedly by several of the sub-phases when the mark stack starts to fill +up. It is also called repeatedly in MS_ROOTS_PUSHED state +to empty the mark stack. +The routine is designed to only perform a limited amount of marking at +each call, so that it can also be used by the incremental collector. +It is fairly carefully tuned, since it usually consumes a large majority +of the garbage collection time. +

+The fact that it performs only a small amount of work per call also +allows it to be used as the core routine of the parallel marker. In that +case it is normally invoked on thread-private mark stacks instead of the +global mark stack. More details can be found in +scale.html +

+The marker correctly handles mark stack overflows. Whenever the mark stack +overflows, the mark state is reset to MS_INVALID. +Since there are already marked objects in the heap, +this eventually forces a complete +scan of the heap, searching for pointers, during which any unmarked objects +referenced by marked objects are again pushed on the mark stack. This +process is repeated until the mark phase completes without a stack overflow. +Each time the stack overflows, an attempt is made to grow the mark stack. +All pieces of the collector that push regions onto the mark stack have to be +careful to ensure forward progress, even in case of repeated mark stack +overflows. Every mark attempt results in additional marked objects. +

+Each mark stack entry is processed by examining all candidate pointers +in the range described by the entry. If the region has no associated +type information, then this typically requires that each 4-byte aligned +quantity (8-byte aligned with 64-bit pointers) be considered a candidate +pointer. +

+We determine whether a candidate pointer is actually the address of +a heap block. This is done in the following steps: + +

  • The candidate pointer is checked against rough heap bounds. +These heap bounds are maintained such that all actual heap objects +fall between them. In order to facilitate black-listing (see below) +we also include address regions that the heap is likely to expand into. +Most non-pointers fail this initial test. +
  • The candidate pointer is divided into two pieces; the most significant +bits identify a HBLKSIZE-sized page in the address space, and +the least significant bits specify an offset within that page. +(A hardware page may actually consist of multiple such pages. +HBLKSIZE is usually the page size divided by a small power of two.) +
  • +The page address part of the candidate pointer is looked up in a +table. +Each table entry contains either 0, indicating that the page is not part +of the garbage collected heap, a small integer n, indicating +that the page is part of large object, starting at least n pages +back, or a pointer to a descriptor for the page. In the first case, +the candidate pointer i not a true pointer and can be safely ignored. +In the last two cases, we can obtain a descriptor for the page containing +the beginning of the object. +
  • +The starting address of the referenced object is computed. +The page descriptor contains the size of the object(s) +in that page, the object kind, and the necessary mark bits for those +objects. The size information can be used to map the candidate pointer +to the object starting address. To accelerate this process, the page header +also contains a pointer to a precomputed map of page offsets to displacements +from the beginning of an object. The use of this map avoids a +potentially slow integer remainder operation in computing the object +start address. +
  • +The mark bit for the target object is checked and set. If the object +was previously unmarked, the object is pushed on the mark stack. +The descriptor is read from the page descriptor. (This is computed +from information GC_obj_kinds when the page is first allocated.) + +

    +At the end of the mark phase, mark bits for left-over free lists are cleared, +in case a free list was accidentally marked due to a stray pointer. + +

    Sweep phase

    + +At the end of the mark phase, all blocks in the heap are examined. +Unmarked large objects are immediately returned to the large object free list. +Each small object page is checked to see if all mark bits are clear. +If so, the entire page is returned to the large object free list. +Small object pages containing some reachable object are queued for later +sweeping, unless we determine that the page contains very little free +space, in which case it is not examined further. +

    +This initial sweep pass touches only block headers, not +the blocks themselves. Thus it does not require significant paging, even +if large sections of the heap are not in physical memory. +

    +Nonempty small object pages are swept when an allocation attempt +encounters an empty free list for that object size and kind. +Pages for the correct size and kind are repeatedly swept until at +least one empty block is found. Sweeping such a page involves +scanning the mark bit array in the page header, and building a free +list linked through the first words in the objects themselves. +This does involve touching the appropriate data page, but in most cases +it will be touched only just before it is used for allocation. +Hence any paging is essentially unavoidable. +

    +Except in the case of pointer-free objects, we maintain the invariant +that any object in a small object free list is cleared (except possibly +for the link field). Thus it becomes the burden of the small object +sweep routine to clear objects. This has the advantage that we can +easily recover from accidentally marking a free list, though that could +also be handled by other means. The collector currently spends a fair +amount of time clearing objects, and this approach should probably be +revisited. +

    +In most configurations, we use specialized sweep routines to handle common +small object sizes. Since we allocate one mark bit per word, it becomes +easier to examine the relevant mark bits if the object size divides +the word length evenly. We also suitably unroll the inner sweep loop +in each case. (It is conceivable that profile-based procedure cloning +in the compiler could make this unnecessary and counterproductive. I +know of no existing compiler to which this applies.) +

    +The sweeping of small object pages could be avoided completely at the expense +of examining mark bits directly in the allocator. This would probably +be more expensive, since each allocation call would have to reload +a large amount of state (e.g. next object address to be swept, position +in mark bit table) before it could do its work. The current scheme +keeps the allocator simple and allows useful optimizations in the sweeper. + +

    Finalization

    +Both GC_register_disappearing_link and +GC_register_finalizer add the request to a corresponding hash +table. The hash table is allocated out of collected memory, but +the reference to the finalizable object is hidden from the collector. +Currently finalization requests are processed non-incrementally at the +end of a mark cycle. +

    +The collector makes an initial pass over the table of finalizable objects, +pushing the contents of unmarked objects onto the mark stack. +After pushing each object, the marker is invoked to mark all objects +reachable from it. The object itself is not explicitly marked. +This assures that objects on which a finalizer depends are neither +collected nor finalized. +

    +If in the process of marking from an object the +object itself becomes marked, we have uncovered +a cycle involving the object. This usually results in a warning from the +collector. Such objects are not finalized, since it may be +unsafe to do so. See the more detailed + discussion of finalization semantics. +

    +Any objects remaining unmarked at the end of this process are added to +a queue of objects whose finalizers can be run. Depending on collector +configuration, finalizers are dequeued and run either implicitly during +allocation calls, or explicitly in response to a user request. +(Note that the former is unfortunately both the default and not generally safe. +If finalizers perform synchronization, it may result in deadlocks. +Nontrivial finalizers generally need to perform synchronization, and +thus require a different collector configuration.) +

    +The collector provides a mechanism for replacing the procedure that is +used to mark through objects. This is used both to provide support for +Java-style unordered finalization, and to ignore certain kinds of cycles, +e.g. those arising from C++ implementations of virtual inheritance. + +

    Generational Collection and Dirty Bits

    +We basically use the concurrent and generational GC algorithm described in +"Mostly Parallel Garbage Collection", +by Boehm, Demers, and Shenker. +

    +The most significant modification is that +the collector always starts running in the allocating thread. +There is no separate garbage collector thread. (If parallel GC is +enabled, helper threads may also be woken up.) +If an allocation attempt either requests a large object, or encounters +an empty small object free list, and notices that there is a collection +in progress, it immediately performs a small amount of marking work +as described above. +

    +This change was made both because we wanted to easily accommodate +single-threaded environments, and because a separate GC thread requires +very careful control over the scheduler to prevent the mutator from +out-running the collector, and hence provoking unneeded heap growth. +

    +In incremental mode, the heap is always expanded when we encounter +insufficient space for an allocation. Garbage collection is triggered +whenever we notice that more than +GC_heap_size/2 * GC_free_space_divisor +bytes of allocation have taken place. +After GC_full_freq minor collections a major collection +is started. +

    +All collections initially run uninterrupted until a predetermined +amount of time (50 msecs by default) has expired. If this allows +the collection to complete entirely, we can avoid correcting +for data structure modifications during the collection. If it does +not complete, we return control to the mutator, and perform small +amounts of additional GC work during those later allocations that +cannot be satisfied from small object free lists. When marking completes, +the set of modified pages is retrieved, and we mark once again from +marked objects on those pages, this time with the mutator stopped. +

    +We keep track of modified pages using one of several distinct mechanisms: +

      +
    1. +Through explicit mutator cooperation. Currently this requires +the use of GC_malloc_stubborn, and is rarely used. +
    2. +(MPROTECT_VDB) By write-protecting physical pages and +catching write faults. This is +implemented for many Unix-like systems and for win32. It is not possible +in a few environments. +
    3. +(GWW_VDB) By using the Win32 GetWriteWatch function to read dirty +bits. +
    4. +(PROC_VDB) By retrieving dirty bit information from /proc. +(Currently only Sun's +Solaris supports this. Though this is considerably cleaner, performance +may actually be better with mprotect and signals.) +
    5. +(PCR_VDB) By relying on an external dirty bit implementation, in this +case the one in Xerox PCR. +
    6. +(DEFAULT_VDB) By treating all pages as dirty. This is the default if +none of the other techniques is known to be usable, and +GC_malloc_stubborn is not used. Practical only for testing, or if +the vast majority of objects use GC_malloc_stubborn. +
    + +

    Black-listing

    + +The collector implements black-listing of pages, as described +in + +Boehm, ``Space Efficient Conservative Collection'', PLDI '93, also available +here. +

    +During the mark phase, the collector tracks ``near misses'', i.e. attempts +to follow a ``pointer'' to just outside the garbage-collected heap, or +to a currently unallocated page inside the heap. Pages that have been +the targets of such near misses are likely to be the targets of +misidentified ``pointers'' in the future. To minimize the future +damage caused by such misidentification, they will be allocated only to +small pointer-free objects. +

    +The collector understands two different kinds of black-listing. A +page may be black listed for interior pointer references +(GC_add_to_black_list_stack), if it was the target of a near +miss from a location that requires interior pointer recognition, +e.g. the stack, or the heap if GC_all_interior_pointers +is set. In this case, we also avoid allocating large blocks that include +this page. +

    +If the near miss came from a source that did not require interior +pointer recognition, it is black-listed with +GC_add_to_black_list_normal. +A page black-listed in this way may appear inside a large object, +so long as it is not the first page of a large object. +

    +The GC_allochblk routine respects black-listing when assigning +a block to a particular object kind and size. It occasionally +drops (i.e. allocates and forgets) blocks that are completely black-listed +in order to avoid excessively long large block free lists containing +only unusable blocks. This would otherwise become an issue +if there is low demand for small pointer-free objects. + +

    Thread support

    +We support several different threading models. Unfortunately Pthreads, +the only reasonably well standardized thread model, supports too narrow +an interface for conservative garbage collection. There appears to be +no completely portable way to allow the collector +to coexist with various Pthreads +implementations. Hence we currently support only the more +common Pthreads implementations. +

    +In particular, it is very difficult for the collector to stop all other +threads in the system and examine the register contents. This is currently +accomplished with very different mechanisms for some Pthreads +implementations. For Linux/HPUX/OSF1, Solaris and Irix it sends signals to +individual Pthreads and has them wait in the signal handler. +

    +The Linux and Irix implementations use +only documented Pthreads calls, but rely on extensions to their semantics. +The Linux implementation pthread_stop_world.c relies on only very +mild extensions to the pthreads semantics, and already supports a large number +of other Unix-like pthreads implementations. Our goal is to make this the +only pthread support in the collector. +

    +All implementations must +intercept thread creation and a few other thread-specific calls to allow +enumeration of threads and location of thread stacks. This is current +accomplished with # define's in gc.h +(really gc_pthread_redirects.h), or optionally +by using ld's function call wrapping mechanism under Linux. +

    +Recent versions of the collector support several facilities to enhance +the processor-scalability and thread performance of the collector. +These are discussed in more detail here. +We briefly outline the data approach to thread-local allocation in the +next section. +

    Thread-local allocation

    +If thread-local allocation is enabled, the collector keeps separate +arrays of free lists for each thread. Thread-local allocation +is currently only supported on a few platforms. +

    +The free list arrays associated +with each thread are only used to satisfy requests for objects that +are both very small, and belong to one of a small number of well-known +kinds. These currently include "normal" and pointer-free objects. +Depending on the configuration, "gcj" objects may also be included. +

    +Thread-local free list entries contain either a pointer to the first +element of a free list, or they contain a counter of the number of +allocation granules, corresponding to objects of this size, +allocated so far. Initially they contain the +value one, i.e. a small counter value. +

    +Thread-local allocation allocates directly through the global +allocator, if the object is of a size or kind not covered by the +local free lists. +

    +If there is an appropriate local free list, the allocator checks whether it +contains a sufficiently small counter value. If so, the counter is simply +incremented by the counter value, and the global allocator is used. +In this way, the initial few allocations of a given size bypass the local +allocator. A thread that only allocates a handful of objects of a given +size will not build up its own free list for that size. This avoids +wasting space for unpopular objects sizes or kinds. +

    +Once the counter passes a threshold, GC_malloc_many is called +to allocate roughly HBLKSIZE space and put it on the corresponding +local free list. Further allocations of that size and kind then use +this free list, and no longer need to acquire the allocation lock. +The allocation procedure is otherwise similar to the global free lists. +The local free lists are also linked using the first word in the object. +In most cases this means they require considerably less time. +

    +Local free lists are treated buy most of the rest of the collector +as though they were in-use reachable data. This requires some care, +since pointer-free objects are not normally traced, and hence a special +tracing procedure is required to mark all objects on pointer-free and +gcj local free lists. +

    +On thread exit, any remaining thread-local free list entries are +transferred back to the global free list. +

    +Note that if the collector is configured for thread-local allocation, +GC versions before 7 do not invoke the thread-local allocator by default. +GC_malloc only uses thread-local allocation in version 7 and later. +

    +For some more details see here, and the +technical report entitled + +"Fast Multiprocessor Memory Allocation and Garbage Collection" + + diff --git a/doc/gcinterface.html b/doc/gcinterface.html new file mode 100644 index 0000000..c315af8 --- /dev/null +++ b/doc/gcinterface.html @@ -0,0 +1,283 @@ + + + + +Garbage Collector Interface + + +

    C Interface

    +On many platforms, a single-threaded garbage collector library can be built +to act as a plug-in malloc replacement. +(Build with -DREDIRECT_MALLOC=GC_malloc -DIGNORE_FREE.) +This is often the best way to deal with third-party libraries +which leak or prematurely free objects. +-DREDIRECT_MALLOC=GC_malloc is intended +primarily as an easy way to adapt old code, not for new development. +

    +New code should use the interface discussed below. +

    +Code must be linked against the GC library. On most UNIX platforms, +depending on how the collector is built, this will be gc.a +or libgc.{a,so}. +

    +The following describes the standard C interface to the garbage collector. +It is not a complete definition of the interface. It describes only the +most commonly used functionality, approximately in decreasing order of +frequency of use. +The full interface is described in +gc.h +or gc.h in the distribution. +

    +Clients should include gc.h. +

    +In the case of multi-threaded code, +gc.h should be included after the threads header file, and +after defining the appropriate GC_XXXX_THREADS macro. +(For 6.2alpha4 and later, simply defining GC_THREADS should suffice.) +The header file gc.h must be included +in files that use either GC or threads primitives, since threads primitives +will be redefined to cooperate with the GC on many platforms. +

    +Thread users should also be aware that on many platforms objects reachable +only from thread-local variables may be prematurely reclaimed. +Thus objects pointed to by thread-local variables should also be pointed to +by a globally visible data structure. (This is viewed as a bug, but as +one that is exceedingly hard to fix without some libc hooks.) +

    +
    void * GC_MALLOC(size_t nbytes) +
    +Allocates and clears nbytes of storage. +Requires (amortized) time proportional to nbytes. +The resulting object will be automatically deallocated when unreferenced. +References from objects allocated with the system malloc are usually not +considered by the collector. (See GC_MALLOC_UNCOLLECTABLE, however. +Building the collector with -DREDIRECT_MALLOC=GC_malloc_uncollectable +is often a way around this.) +GC_MALLOC is a macro which invokes GC_malloc by default or, +if GC_DEBUG +is defined before gc.h is included, a debugging version that checks +occasionally for overwrite errors, and the like. +
    void * GC_MALLOC_ATOMIC(size_t nbytes) +
    +Allocates nbytes of storage. +Requires (amortized) time proportional to nbytes. +The resulting object will be automatically deallocated when unreferenced. +The client promises that the resulting object will never contain any pointers. +The memory is not cleared. +This is the preferred way to allocate strings, floating point arrays, +bitmaps, etc. +More precise information about pointer locations can be communicated to the +collector using the interface in +gc_typed.h in the distribution. +
    void * GC_MALLOC_UNCOLLECTABLE(size_t nbytes) +
    +Identical to GC_MALLOC, +except that the resulting object is not automatically +deallocated. Unlike the system-provided malloc, the collector does +scan the object for pointers to garbage-collectible memory, even if the +block itself does not appear to be reachable. (Objects allocated in this way +are effectively treated as roots by the collector.) +
    void * GC_REALLOC(void *old, size_t new_size) +
    +Allocate a new object of the indicated size and copy (a prefix of) the +old object into the new object. The old object is reused in place if +convenient. If the original object was allocated with +GC_MALLOC_ATOMIC, +the new object is subject to the same constraints. If it was allocated +as an uncollectible object, then the new object is uncollectible, and +the old object (if different) is deallocated. +
    void GC_FREE(void *dead) +
    +Explicitly deallocate an object. Typically not useful for small +collectible objects. +
    void * GC_MALLOC_IGNORE_OFF_PAGE(size_t nbytes) +
    +
    void * GC_MALLOC_ATOMIC_IGNORE_OFF_PAGE(size_t nbytes) +
    +Analogous to GC_MALLOC and GC_MALLOC_ATOMIC, +except that the client +guarantees that as long +as the resulting object is of use, a pointer is maintained to someplace +inside the first 512 bytes of the object. This pointer should be declared +volatile to avoid interference from compiler optimizations. +(Other nonvolatile pointers to the object may exist as well.) +This is the +preferred way to allocate objects that are likely to be > 100KBytes in size. +It greatly reduces the risk that such objects will be accidentally retained +when they are no longer needed. Thus space usage may be significantly reduced. +
    void GC_INIT(void) +
    +On some platforms, it is necessary to invoke this +from the main executable, not from a dynamic library, before +the initial invocation of a GC routine. It is recommended that this be done +in portable code, though we try to ensure that it expands to a no-op +on as many platforms as possible. In GC 7.0, it was required if +thread-local allocation is enabled in the collector build, and malloc +is not redirected to GC_malloc. +
    void GC_gcollect(void) +
    +Explicitly force a garbage collection. +
    void GC_enable_incremental(void) +
    +Cause the garbage collector to perform a small amount of work +every few invocations of GC_MALLOC or the like, instead of performing +an entire collection at once. This is likely to increase total +running time. It will improve response on a platform that either has +suitable support in the garbage collector (Linux and most Unix +versions, win32 if the collector was suitably built) or if "stubborn" +allocation is used (see +gc.h). +On many platforms this interacts poorly with system calls +that write to the garbage collected heap. +
    GC_warn_proc GC_set_warn_proc(GC_warn_proc p) +
    +Replace the default procedure used by the collector to print warnings. +The collector +may otherwise write to stderr, most commonly because GC_malloc was used +in a situation in which GC_malloc_ignore_off_page would have been more +appropriate. See gc.h for details. +
    void GC_REGISTER_FINALIZER(...) +
    +Register a function to be called when an object becomes inaccessible. +This is often useful as a backup method for releasing system resources +(e.g. closing files) when the object referencing them becomes +inaccessible. +It is not an acceptable method to perform actions that must be performed +in a timely fashion. +See gc.h for details of the interface. +See here for a more detailed discussion +of the design. +

    +Note that an object may become inaccessible before client code is done +operating on objects referenced by its fields. +Suitable synchronization is usually required. +See here +or here +for details. +

    +

    +If you are concerned with multiprocessor performance and scalability, +you should consider enabling and using thread local allocation. +

    +If your platform +supports it, you should build the collector with parallel marking support +(-DPARALLEL_MARK, or --enable-parallel-mark). +

    +If the collector is used in an environment in which pointer location +information for heap objects is easily available, this can be passed on +to the collector using the interfaces in either gc_typed.h +or gc_gcj.h. +

    +The collector distribution also includes a string package that takes +advantage of the collector. For details see +cord.h + +

    C++ Interface

    +The C++ interface is implemented as a thin layer on the C interface. +Unfortunately, this thin layer appears to be very sensitive to variations +in C++ implementations, particularly since it tries to replace the global +::new operator, something that appears to not be well-standardized. +Your platform may need minor adjustments in this layer (gc_cpp.cc, gc_cpp.h, +and possibly gc_allocator.h). Such changes do not require understanding +of collector internals, though they may require a good understanding of +your platform. (Patches enhancing portability are welcome. +But it's easy to break one platform by fixing another.) +

    +Usage of the collector from C++ is also complicated by the fact that there +are many "standard" ways to allocate memory in C++. The default ::new +operator, default malloc, and default STL allocators allocate memory +that is not garbage collected, and is not normally "traced" by the +collector. This means that any pointers in memory allocated by these +default allocators will not be seen by the collector. Garbage-collectible +memory referenced only by pointers stored in such default-allocated +objects is likely to be reclaimed prematurely by the collector. +

    +It is the programmers responsibility to ensure that garbage-collectible +memory is referenced by pointers stored in one of +

      +
    • Program variables +
    • Garbage-collected objects +
    • Uncollected but "traceable" objects +
    +"Traceable" objects are not necessarily reclaimed by the collector, +but are scanned for pointers to collectible objects. +They are usually allocated by GC_MALLOC_UNCOLLECTABLE, as described +above, and through some interfaces described below. +

    +(On most platforms, the collector may not trace correctly from in-flight +exception objects. Thus objects thrown as exceptions should only +point to otherwise reachable memory. This is another bug whose +proper repair requires platform hooks.) +

    +The easiest way to ensure that collectible objects are properly referenced +is to allocate only collectible objects. This requires that every +allocation go through one of the following interfaces, each one of +which replaces a standard C++ allocation mechanism. Note that +this requires that all STL containers be explicitly instantiated with +gc_allocator. +

    +
    STL allocators +
    +

    +Recent versions of the collector include a hopefully standard-conforming +allocator implementation in gc_allocator.h. It defines +

      +
    • traceable_allocator +
    • gc_allocator +
    +which may be used either directly to allocate memory or to instantiate +container templates. +The former allocates uncollectible but traced memory. +The latter allocates garbage-collected memory. +

    +These should work with any fully standard-conforming C++ compiler. +

    +Users of the SGI extended STL +or its derivatives (including most g++ versions) +may instead be able to include new_gc_alloc.h before including +STL header files. This is increasingly discouraged. +

    +This defines SGI-style allocators +

      +
    • alloc +
    • single_client_alloc +
    • gc_alloc +
    • single_client_gc_alloc +
    +The first two allocate uncollectible but traced +memory, while the second two allocate collectible memory. +The single_client versions are not safe for concurrent access by +multiple threads, but are faster. +

    +For an example, click here. +

    Class inheritance based interface for new-based allocation +
    +Users may include gc_cpp.h and then cause members of classes to +be allocated in garbage collectible memory by having those classes +inherit from class gc. +For details see gc_cpp.h. +

    +Linking against libgccpp in addition to the gc library overrides +::new (and friends) to allocate traceable memory but uncollectible +memory, making it safe to refer to collectible objects from the resulting +memory. +

    C interface +
    +It is also possible to use the C interface from +gc.h directly. +On platforms which use malloc to implement ::new, it should usually be possible +to use a version of the collector that has been compiled as a malloc +replacement. It is also possible to replace ::new and other allocation +functions suitably, as is done by libgccpp. +

    +Note that user-implemented small-block allocation often works poorly with +an underlying garbage-collected large block allocator, since the collector +has to view all objects accessible from the user's free list as reachable. +This is likely to cause problems if GC_MALLOC +is used with something like +the original HP version of STL. +This approach works well with the SGI versions of the STL only if the +malloc_alloc allocator is used. +

    + + diff --git a/doc/leak.html b/doc/leak.html new file mode 100644 index 0000000..43bc66d --- /dev/null +++ b/doc/leak.html @@ -0,0 +1,207 @@ + + + + +Using the Garbage Collector as Leak Detector + + +

    Using the Garbage Collector as Leak Detector

    +The garbage collector may be used as a leak detector. +In this case, the primary function of the collector is to report +objects that were allocated (typically with GC_MALLOC), +not deallocated (normally with GC_FREE), but are +no longer accessible. Since the object is no longer accessible, +there in normally no way to deallocate the object at a later time; +thus it can safely be assumed that the object has been "leaked". +

    +This is substantially different from counting leak detectors, +which simply verify that all allocated objects are eventually +deallocated. A garbage-collector based leak detector can provide +somewhat more precise information when an object was leaked. +More importantly, it does not report objects that are never +deallocated because they are part of "permanent" data structures. +Thus it does not require all objects to be deallocated at process +exit time, a potentially useless activity that often triggers +large amounts of paging. +

    +All non-ancient versions of the garbage collector provide +leak detection support. Version 5.3 adds the following +features: +

      +
    1. Leak detection mode can be initiated at run-time by +setting GC_find_leak instead of building the +collector with FIND_LEAK +defined. This variable should be set to a nonzero value +at program startup. +
    2. Leaked objects should be reported and then correctly garbage collected. +Prior versions either reported leaks or functioned as a garbage collector. +
    +For the rest of this description we will give instructions that work +with any reasonable version of the collector. +

    +To use the collector as a leak detector, follow the following steps: +

      +
    1. Build the collector with -DFIND_LEAK. Otherwise use default +build options. +
    2. Change the program so that all allocation and deallocation goes +through the garbage collector. +
    3. Arrange to call GC_gcollect at appropriate points to check +for leaks. +(For sufficiently long running programs, this will happen implicitly, +but probably not with sufficient frequency.) +
    +The second step can usually be accomplished with the +-DREDIRECT_MALLOC=GC_malloc option when the collector is built, +or by defining malloc, calloc, +realloc and free +to call the corresponding garbage collector functions. +But this, by itself, will not yield very informative diagnostics, +since the collector does not keep track of information about +how objects were allocated. The error reports will include +only object addresses. +

    +For more precise error reports, as much of the program as possible +should use the all uppercase variants of these functions, after +defining GC_DEBUG, and then including gc.h. +In this environment GC_MALLOC is a macro which causes +at least the file name and line number at the allocation point to +be saved as part of the object. Leak reports will then also include +this information. +

    +Many collector features (e.g. stubborn objects, finalization, +and disappearing links) are less useful in this context, and are not +fully supported. Their use will usually generate additional bogus +leak reports, since the collector itself drops some associated objects. +

    +The same is generally true of thread support. However, as of 6.0alpha4, +correct leak reports should be generated with linuxthreads. +

    +On a few platforms (currently Solaris/SPARC, Irix, and, with -DSAVE_CALL_CHAIN, +Linux/X86), GC_MALLOC +also causes some more information about its call stack to be saved +in the object. Such information is reproduced in the error +reports in very non-symbolic form, but it can be very useful with the +aid of a debugger. +

    An Example

    +The following header file leak_detector.h is included in the +"include" subdirectory of the distribution: +
    +#define GC_DEBUG
+#include "gc.h"
+#define malloc(n) GC_MALLOC(n)
+#define calloc(m,n) GC_MALLOC((m)*(n))
+#define free(p) GC_FREE(p)
+#define realloc(p,n) GC_REALLOC((p),(n))
+#define CHECK_LEAKS() GC_gcollect()
+
    +

    +Assume the collector has been built with -DFIND_LEAK. (For +newer versions of the collector, we could instead add the statement +GC_find_leak = 1 as the first statement in main(). +

    +The program to be tested for leaks can then look like: +

    +#include "leak_detector.h"
+
+main() {
+    int *p[10];
+    int i;
+    /* GC_find_leak = 1; for new collector versions not         */
+    /* compiled with -DFIND_LEAK.                               */
+    for (i = 0; i < 10; ++i) {
+        p[i] = malloc(sizeof(int)+i);
+    }
+    for (i = 1; i < 10; ++i) {
+        free(p[i]);
+    }
+    for (i = 0; i < 9; ++i) {
+        p[i] = malloc(sizeof(int)+i);
+    }
+    CHECK_LEAKS();
+}
+
    +

    +On an Intel X86 Linux system this produces on the stderr stream: +

    +Leaked composite object at 0x806dff0 (leak_test.c:8, sz=4)
+
    +(On most unmentioned operating systems, the output is similar to this. +If the collector had been built on Linux/X86 with -DSAVE_CALL_CHAIN, +the output would be closer to the Solaris example. For this to work, +the program should not be compiled with -fomit_frame_pointer.) +

    +On Irix it reports +

    +Leaked composite object at 0x10040fe0 (leak_test.c:8, sz=4)
+        Caller at allocation:
+                ##PC##= 0x10004910
+
    +and on Solaris the error report is +
    +Leaked composite object at 0xef621fc8 (leak_test.c:8, sz=4)
+        Call chain at allocation:
+                args: 4 (0x4), 200656 (0x30FD0)
+                ##PC##= 0x14ADC
+                args: 1 (0x1), -268436012 (0xEFFFFDD4)
+                ##PC##= 0x14A64
+
    +In the latter two cases some additional information is given about +how malloc was called when the leaked object was allocated. For +Solaris, the first line specifies the arguments to GC_debug_malloc +(the actual allocation routine), The second the program counter inside +main, the third the arguments to main, and finally the program +counter inside the caller to main (i.e. in the C startup code). +

    +In the Irix case, only the address inside the caller to main is given. +

    +In many cases, a debugger is needed to interpret the additional information. +On systems supporting the "adb" debugger, the tools/callprocs.sh +script can be used to replace program counter values with symbolic names. +As of version 6.1, the collector tries to generate symbolic names for +call stacks if it knows how to do so on the platform. This is true on +Linux/X86, but not on most other platforms. +

    Simplified leak detection under Linux

    +Since version 6.1, it should be possible to run the collector in leak +detection mode on a program a.out under Linux/X86 as follows: +
      +
    1. Ensure that a.out is a single-threaded executable, or you are using +a very recent (7.0alpha7+) collector version on Linux. +On most platforms this does not work at all for the multi-threaded programs. +
    2. If possible, ensure that the addr2line program is installed in +/usr/bin. (It comes with most Linux distributions.) +
    3. If possible, compile your program, which we'll call a.out, +with full debug information. +This will improve the quality of the leak reports. With this approach, it is +no longer necessary to call GC_ routines explicitly, +though that can also +improve the quality of the leak reports. +
    4. Build the collector and install it in directory foo as follows: +
        +
      • configure --prefix=foo --enable-gc-debug --enable-redirect-malloc +--disable-threads +
      • make +
      • make install +
      +With a very recent collector on Linux, it may sometimes be safe to omit +the --disable-threads. But the combination of thread support +and malloc replacement is not yet rock solid. +
    5. Set environment variables as follows: +
        +
      • LD_PRELOAD=foo/lib/libgc.so +
      • GC_FIND_LEAK +
      • You may also want to set GC_PRINT_STATS +(to confirm that the collector is running) and/or +GC_LOOP_ON_ABORT (to facilitate debugging from another +window if something goes wrong). +
      +
    6. Simply run a.out as you normally would. Note that if you run anything +else (e.g. your editor) with those environment variables set, +it will also be leak tested. This may or may not be useful and/or +embarrassing. It can generate +mountains of leak reports if the application wasn't designed to avoid leaks, +e.g. because it's always short-lived. +
    +This has not yet been thoroughly tested on large applications, but it's known +to do the right thing on at least some small ones. + + diff --git a/doc/overview.html b/doc/overview.html new file mode 100644 index 0000000..16f5617 --- /dev/null +++ b/doc/overview.html @@ -0,0 +1,431 @@ + +A garbage collector for C and C++ + + + + + + + + + + +
    Interface OverviewTutorial SlidesFAQExampleDownloadLicense
    +

    A garbage collector for C and C++

    + +[ This is an updated version of the page formerly at +www.hpl.hp.com/personal/Hans_Boehm/gc/, +before that at +http://reality.sgi.com/boehm/gc.html +and before that at +ftp://ftp.parc.xerox.com/pub/gc/gc.html. ] +

    +The Boehm-Demers-Weiser +conservative Garbage Collector (BDWGC) can +be used as a garbage collecting +replacement for C malloc or C++ new. +It allows you to allocate memory basically as you normally would, +without explicitly deallocating memory that is no longer useful. +The collector automatically recycles memory when it determines +that it can no longer be otherwise accessed. +A simple example of such a use is given +here. +

    +The collector is also used by a number of programming language +implementations that either use C as intermediate code, want +to facilitate easier interoperation with C libraries, or +just prefer the simple collector interface. +For a more detailed description of the interface, see +here. +

    +Alternatively, the garbage collector may be used as +a leak detector +for C or C++ programs, though that is not its primary goal. +

    +Typically several versions are offered for +downloading: +preview, stable, legacy. +Usually you should use the one marked as the latest stable release. +Preview versions may contain additional features, platform support, +but are likely to be less well tested. +The list of changes for each version is specified on the +releases page. +

    +The arguments for and against conservative garbage collection +in C and C++ are briefly +discussed in +issues.html. +The beginnings of a frequently-asked-questions list are +here. +

    +The garbage collector code is copyrighted by +Hans-J. Boehm, +Alan J. Demers, +Xerox Corporation, +Silicon Graphics, +and +Hewlett-Packard Company. +It may be used and copied without payment of a fee under minimal restrictions. +See the README file in the distribution or the +license for more details. +IT IS PROVIDED AS IS, +WITH ABSOLUTELY NO WARRANTY EXPRESSED OR IMPLIED. ANY USE IS AT YOUR OWN RISK. +

    +Empirically, this collector works with most unmodified C programs, +simply by replacing +malloc with GC_malloc calls, +replacing realloc with GC_realloc calls, and removing +free calls. Exceptions are discussed +in issues.html. +

    Platforms

    +The collector is not completely portable, but the distribution +includes ports to most standard PC and UNIX/Linux platforms. +The collector should work on Linux, *BSD, recent Windows versions, +MacOS X, HP/UX, Solaris, +Tru64, Irix and a few other operating systems. +Some ports are more polished than others. +

    +Irix pthreads, Linux threads, Win32 threads, Solaris threads +(pthreads only), +HP/UX 11 pthreads, Tru64 pthreads, and MacOS X threads are supported +in recent versions. +

    Separately distributed ports

    +For MacOS 9/Classic use, Patrick Beard's latest port is available from +http://homepage.mac.com/pcbeard/gc/. +(Unfortunately, that's now quite dated. +I'm not in a position to test under MacOS. Although I try to +incorporate changes, it is impossible for +me to update the project file.) +

    +Precompiled versions of the collector for NetBSD are available +here. +

    +Debian Linux includes prepackaged +versions of the collector. +

    Scalable multiprocessor versions

    +Kenjiro Taura, Toshio Endo, and Akinori Yonezawa have made available +a parallel collector +based on this one. Their collector takes advantage of multiple processors +during a collection. Starting with collector version 6.0alpha1 +we also do this, though with more modest processor scalability goals. +Our approach is discussed briefly in +scale.html. +

    Some Collector Details

    +The collector uses a mark-sweep algorithm. +It provides incremental and generational +collection under operating systems which provide the right kind of +virtual memory support. (Currently this includes SunOS[45], IRIX, +OSF/1, Linux, and Windows, with varying restrictions.) +It allows finalization code +to be invoked when an object is collected. +It can take advantage of type information to locate pointers if such +information is provided, but it is usually used without such information. +See the README and +gc.h files in the distribution for more details. +

    +For an overview of the implementation, see here. +

    +The garbage collector distribution includes a C string +(cord) package that provides +for fast concatenation and substring operations on long strings. +A simple curses- and win32-based editor that represents the entire file +as a cord is included as a +sample application. +

    +Performance of the nonincremental collector is typically competitive +with malloc/free implementations. Both space and time overhead are +likely to be only slightly higher +for programs written for malloc/free +(see Detlefs, Dosser and Zorn's +Memory Allocation Costs in Large C and C++ Programs.) +For programs allocating primarily very small objects, the collector +may be faster; for programs allocating primarily large objects it will +be slower. If the collector is used in a multi-threaded environment +and configured for thread-local allocation, it may in some cases +significantly outperform malloc/free allocation in time. +

    +We also expect that in many cases any additional overhead +will be more than compensated for by decreased copying etc. +if programs are written +and tuned for garbage collection. +

    Further Reading:

    +The beginnings of a frequently asked questions list for this +collector are here. +

    +The following provide information on garbage collection in general: +

    +Paul Wilson's garbage collection ftp archive and GC survey. +

    +The Ravenbrook +Memory Management Reference. +

    +David Chase's +GC FAQ. +

    +Richard Jones' + +Garbage Collection Page and + +his book. +

    +The following papers describe the collector algorithms we use +and the underlying design decisions at +a higher level. +

    +(Some of the lower level details can be found +here.) +

    +The first one is not available +electronically due to copyright considerations. Most of the others are +subject to ACM copyright. +

    +Boehm, H., "Dynamic Memory Allocation and Garbage Collection", Computers in Physics +9, 3, May/June 1995, pp. 297-303. This is directed at an otherwise sophisticated +audience unfamiliar with memory allocation issues. The algorithmic details differ +from those in the implementation. There is a related letter to the editor and a minor +correction in the next issue. +

    +Boehm, H., and M. Weiser, +"Garbage Collection in an Uncooperative Environment", +Software Practice & Experience, September 1988, pp. 807-820. +

    +Boehm, H., A. Demers, and S. Shenker, "Mostly Parallel Garbage Collection", +Proceedings of the ACM SIGPLAN '91 Conference on Programming Language Design and Implementation, +SIGPLAN Notices 26, 6 (June 1991), pp. 157-164. +

    +Boehm, H., "Space Efficient Conservative Garbage Collection", +Proceedings of the ACM SIGPLAN '93 Conference on Programming Language Design +and Implementation, SIGPLAN Notices 28, 6 (June 1993), pp. 197-206. +

    +Boehm, H., "Reducing Garbage Collector Cache Misses", + Proceedings of the 2000 International Symposium on Memory Management . + +Official version. + +Technical report version. Describes the prefetch strategy +incorporated into the collector for some platforms. Explains why +the sweep phase of a "mark-sweep" collector should not really be +a distinct phase. +

    +M. Serrano, H. Boehm, +"Understanding Memory Allocation of Scheme Programs", +Proceedings of the Fifth ACM SIGPLAN International Conference on +Functional Programming, 2000, Montreal, Canada, pp. 245-256. + +Official version. + +Earlier Technical Report version. Includes some discussion of the +collector debugging facilities for identifying causes of memory retention. +

    +Boehm, H., +"Fast Multiprocessor Memory Allocation and Garbage Collection", + +HP Labs Technical Report HPL 2000-165. Discusses the parallel +collection algorithms, and presents some performance results. +

    +Boehm, H., "Bounding Space Usage of Conservative Garbage Collectors", +Proceedings of the 2002 ACM SIGPLAN-SIGACT Symposium on Principles of +Programming Languages, Jan. 2002, pp. 93-100. + +Official version. + +Technical report version. +Includes a discussion of a collector facility to much more reliably test for +the potential of unbounded heap growth. +

    +The following papers discuss language and compiler restrictions necessary to guaranteed +safety of conservative garbage collection. +

    +We thank John Levine and JCLT for allowing +us to make the second paper available electronically, and providing PostScript for the final +version. +

    +Boehm, H., "Simple Garbage-Collector-Safety", +Proceedings of the ACM SIGPLAN '96 Conference on Programming Language Design +and Implementation. +

    +Boehm, H., and D. Chase, "A Proposal for Garbage-Collector-Safe C Compilation", +Journal of C Language Translation 4, 2 (December 1992), pp. 126-141. +

    +Other related information: +

    +The Detlefs, Dosser and Zorn's Memory Allocation Costs in Large C and C++ Programs. + This is a performance comparison of the Boehm-Demers-Weiser collector to malloc/free, +using programs written for malloc/free. +

    +Joel Bartlett's mostly copying conservative garbage collector for C++. +

    +John Ellis and David Detlef's +Safe Efficient Garbage Collection for C++ +proposal. +

    +Henry Baker's paper collection. +

    +Slides for Hans Boehm's Allocation and GC Myths talk. +

    Current users:

    +Known current users of some variant of this collector include: +

    +The runtime system for +GCJ, +the static GNU java compiler. +

    +W3m, a text-based web browser. +

    +Some versions of the Xerox DocuPrint printer software. +

    +The Mozilla project, as leak +detector. +

    +The Mono project, +an open source implementation of the .NET development framework. +

    +The DotGNU Portable.NET +project, another open source .NET implementation. +

    +The Irssi IRC client. +

    +The Berkeley Titanium project. +

    +The NAGWare f90 Fortran 90 compiler. +

    +Elwood Corporation's Eclipse Common Lisp system, C library, and translator. +

    +The Bigloo Scheme +and Camloo ML compilers +written by Manuel Serrano and others. +

    +Brent Benson's libscheme. +

    +The MzScheme scheme implementation. +

    +The University of Washington Cecil Implementation. +

    +The Berkeley Sather implementation. +

    +The Berkeley Harmonia Project. +

    +The Toba Java Virtual +Machine to C translator. +

    +The Gwydion Dylan compiler. +

    +The +GNU Objective C runtime. +

    +Macaulay 2, a system to support +research in algebraic geometry and commutative algebra. +

    +The Vesta configuration management +system. +

    +Visual Prolog 6. +

    +Asymptote LaTeX-compatible +vector graphics language. +

    More information on the BDWGC primary site

    +A simple illustration of how to build and +use the collector. +

    +Description of alternate interfaces to the +garbage collector. +

    +Slides from an ISMM 2004 tutorial about the GC. +

    +A FAQ (frequently asked questions) list. +

    +How to use the garbage collector as a leak detector. +

    +Some hints on debugging garbage collected +applications. +

    +An overview of the implementation of the +garbage collector. +

    +The data structure used for fast pointer lookups. +

    +Scalability of the collector to multiprocessors. +

    +Directory containing +the distribution files of all garbage collector releases. +It duplicates +Download page on +GitHub. +

    More background information

    +An attempt to establish a bound on space usage of +conservative garbage collectors. +

    +Mark-sweep versus copying garbage collectors +and their complexity. +

    +Pros and cons of conservative garbage collectors, +in comparison to other collectors. +

    +Issues related to garbage collection vs. +manual memory management in C/C++. +

    +An example of a case in which garbage collection +results in a much faster implementation as a result of reduced synchronization. +

    +Slide set discussing performance of nonmoving +garbage collectors. +

    + +Slide set discussing Destructors, Finalizers, and Synchronization +(POPL 2003). +

    + +Paper corresponding to above slide set +( +Technical Report version). +

    +A Java/Scheme/C/C++ garbage collection benchmark. +

    +Slides for talk on memory allocation myths. +

    +Slides for OOPSLA 98 garbage collection talk. +

    +Related papers. +

    Contacts and new release announcements

    +GitHub and Stack Overflow are the major two places for communication. +

    +Technical questions (how to, how does it work, etc.) should be posted to +Stack Overflow +with "boehm-gc" tag. +

    +To contribute, please rebase your code to the latest +master and submit +a pull request to GitHub. +

    +To report a bug, or propose (request) a new feature, create +a GitHub issue. +Please make sure it has not been reported yet by someone else. +

    +To receive notifications on every release, please subscribe to +Releases RSS feed. +Notifications on all issues and pull requests are available by +watching the project. +

    +Mailing lists (bdwgc-announce@lists.opendylan.org, bdwgc@lists.opendylan.org, +and the former gc-announce@linux.hpl.hp.com and gc@linux.hpl.hp.com) are not +used at this moment. Their content is available in +bdwgc-announce +and +bdwgc +archive files, respectively. +The gc list archive may also be read at +Narkive. +

    +Some prior discussion of the collector has taken place on the gcc +java mailing list, whose archives appear +here, and also on +gclist@iecc.com. +

    diff --git a/doc/porting.html b/doc/porting.html new file mode 100644 index 0000000..86349ea --- /dev/null +++ b/doc/porting.html @@ -0,0 +1,327 @@ + + + Conservative GC Porting Directions + + +

    Conservative GC Porting Directions

    +The collector is designed to be relatively easy to port, but is not +portable code per se. The collector inherently has to perform operations, +such as scanning the stack(s), that are not possible in portable C code. +

    +All of the following assumes that the collector is being ported to a +byte-addressable 32- or 64-bit machine. Currently all successful ports +to 64-bit machines involve LP64 targets. The code base includes some +provisions for P64 targets (notably win64), but that has not been tested. +You are hereby discouraged from attempting a port to non-byte-addressable, +or 8-bit, or 16-bit machines. +

    +The difficulty of porting the collector varies greatly depending on the needed +functionality. In the simplest case, only some small additions are needed +for the include/private/gcconfig.h file. This is described in the +following section. Later sections discuss some of the optional features, +which typically involve more porting effort. +

    +Note that the collector makes heavy use of ifdefs. Unlike +some other software projects, we have concluded repeatedly that this is preferable +to system dependent files, with code duplicated between the files. +However, to keep this manageable, we do strongly believe in indenting +ifdefs correctly (for historical reasons usually without the leading +sharp sign). (Separate source files are of course fine if they don't result in +code duplication.) +

    Adding Platforms to gcconfig.h

    +If neither thread support, nor tracing of dynamic library data is required, +these are often the only changes you will need to make. +

    +The gcconfig.h file consists of three sections: +

      +
    1. A section that defines GC-internal macros +that identify the architecture (e.g. IA64 or I386) +and operating system (e.g. LINUX or MSWIN32). +This is usually done by testing predefined macros. By defining +our own macros instead of using the predefined ones directly, we can +impose a bit more consistency, and somewhat isolate ourselves from +compiler differences. +

      +It is relatively straightforward to add a new entry here. But please try +to be consistent with the existing code. In particular, 64-bit variants +of 32-bit architectures general are not treated as a new architecture. +Instead we explicitly test for 64-bit-ness in the few places in which it +matters. (The notable exception here is I386 and X86_64. +This is partially historical, and partially justified by the fact that there +are arguably more substantial architecture and ABI differences here than +for RISC variants.) +

      +on GNU-based systems, cpp -dM empty_source_file.c seems to generate +a set of predefined macros. On some other systems, the "verbose" +compiler option may do so, or the manual page may list them. +

    2. +A section that defines a small number of platform-specific macros, which are +then used directly by the collector. For simple ports, this is where most of +the effort is required. We describe the macros below. +

      +This section contains a subsection for each architecture (enclosed in a +suitable ifdef. Each subsection usually contains some +architecture-dependent defines, followed by several sets of OS-dependent +defines, again enclosed in ifdefs. +

    3. +A section that fills in defaults for some macros left undefined in the preceding +section, and defines some other macros that rarely need adjustment for +new platforms. You will typically not have to touch these. +If you are porting to an OS that +was previously completely unsupported, it is likely that you will +need to add another clause to the definition of GET_MEM. +
    +The following macros must be defined correctly for each architecture and operating +system: +
    +
    MACH_TYPE +
    +Defined to a string that represents the machine architecture. Usually +just the macro name used to identify the architecture, but enclosed in quotes. +
    OS_TYPE +
    +Defined to a string that represents the operating system name. Usually +just the macro name used to identify the operating system, but enclosed in quotes. +
    CPP_WORDSZ +
    +The word size in bits as a constant suitable for preprocessor tests, +i.e. without casts or sizeof expressions. Currently always defined as +either 64 or 32. For platforms supporting both 32- and 64-bit ABIs, +this should be conditionally defined depending on the current ABI. +There is a default of 32. +
    ALIGNMENT +
    +Defined to be the largest N, such that +all pointer are guaranteed to be aligned on N-byte boundaries. +defining it to be 1 will always work, but perform poorly. +For all modern 32-bit platforms, this is 4. For all modern 64-bit +platforms, this is 8. Whether or not X86 qualifies as a modern +architecture here is compiler- and OS-dependent. +
    DATASTART +
    +The beginning of the main data segment. The collector will trace all +memory between DATASTART and DATAEND for root pointers. +On some platforms, this can be defined to a constant address, +though experience has shown that to be risky. Ideally the linker will +define a symbol (e.g. _data whose address is the beginning +of the data segment. Sometimes the value can be computed using +the GC_SysVGetDataStart function. Not used if either +the next macro is defined, or if dynamic loading is supported, and the +dynamic loading support defines a function +GC_register_main_static_data() which returns false. +
    SEARCH_FOR_DATA_START +
    +If this is defined DATASTART will be defined to a dynamically +computed value which is obtained by starting with the address of +_end and walking backwards until non-addressable memory is found. +This often works on Posix-like platforms. It makes it harder to debug +client programs, since startup involves generating and catching a +segmentation fault, which tends to confuse users. +
    DATAEND +
    +Set to the end of the main data segment. Defaults to end, +where that is declared as an array. This works in some cases, since +the linker introduces a suitable symbol. +
    DATASTART2, DATAEND2 +
    +Some platforms have two discontiguous main data segments, e.g. +for initialized and uninitialized data. If so, these two macros +should be defined to the limits of the second main data segment. +
    STACK_GROWS_UP +
    +Should be defined if the stack (or thread stacks) grow towards higher +addresses. (This appears to be true only on PA-RISC. If your architecture +has more than one stack per thread, and is not supported yet, you will +need to do more work. Grep for "IA64" in the source for an example.) +
    STACKBOTTOM +
    +Defined to be the cool end of the stack, which is usually the +highest address in the stack. It must bound the region of the +stack that contains pointers into the GC heap. With thread support, +this must be the cold end of the main stack, which typically +cannot be found in the same way as the other thread stacks. +If this is not defined and none of the following three macros +is defined, client code must explicitly set +GC_stackbottom to an appropriate value before calling +GC_INIT() or any other GC_ routine. +
    LINUX_STACKBOTTOM +
    +May be defined instead of STACKBOTTOM. +If defined, then the cold end of the stack will be determined +Currently we usually read it from /proc. +
    HEURISTIC1 +
    +May be defined instead of STACKBOTTOM. +STACK_GRAN should generally also be undefined and defined. +The cold end of the stack is determined by taking an address inside +GC_init's frame, and rounding it up to +the next multiple of STACK_GRAN. This works well if the stack base is +always aligned to a large power of two. +(STACK_GRAN is predefined to 0x1000000, which is +rarely optimal.) +
    HEURISTIC2 +
    +May be defined instead of STACKBOTTOM. +The cold end of the stack is determined by taking an address inside +GC_init's frame, incrementing it repeatedly +in small steps (decrement if STACK_GROWS_UP), and reading the value +at each location. We remember the value when the first +Segmentation violation or Bus error is signaled, round that +to the nearest plausible page boundary, and use that as the +stack base. +
    DYNAMIC_LOADING +
    +Should be defined if dyn_load.c has been updated for this +platform and tracing of dynamic library roots is supported. +
    MPROTECT_VDB, PROC_VDB +
    +May be defined if the corresponding "virtual dirty bit" +implementation in os_dep.c is usable on this platform. This +allows incremental/generational garbage collection. +MPROTECT_VDB identifies modified pages by +write protecting the heap and catching faults. +PROC_VDB uses the /proc primitives to read dirty bits. +
    PREFETCH, GC_PREFETCH_FOR_WRITE +
    +The collector uses PREFETCH(x) to preload the cache +with *x. +This defaults to a no-op. +
    CLEAR_DOUBLE +
    +If CLEAR_DOUBLE is defined, then +CLEAR_DOUBLE(x) is used as a fast way to +clear the two words at GC_malloc-aligned address x. By default, +word stores of 0 are used instead. +
    HEAP_START +
    +HEAP_START may be defined as the initial address hint for mmap-based +allocation. +
    +

    Additional requirements for a basic port

    +In some cases, you may have to add additional platform-specific code +to other files. A likely candidate is the implementation of +GC_with_callee_saves_pushed in     mach_dep.c. +This ensure that register contents that the collector must trace +from are copied to the stack. Typically this can be done portably, +but on some platforms it may require assembly code, or just +tweaking of conditional compilation tests. +

    +For GC7, if your platform supports getcontext(), then defining +the macro UNIX_LIKE for your OS in gcconfig.h +(if it isn't defined there yet) is likely to solve the problem. +otherwise, if you are using gcc, _builtin_unwind_init() +will be used, and should work fine. If that is not applicable either, +the implementation will try to use setjmp(). This will work if your +setjmp implementation saves all possibly pointer-valued registers +into the buffer, as opposed to trying to unwind the stack at +longjmp time. The setjmp_test test tries to determine this, +but often doesn't get it right. +

    +In GC6.x versions of the collector, tracing of registers +was more commonly handled +with assembly code. In GC7, this is generally to be avoided. +

    +Most commonly os_dep.c will not require attention, but see below. +

    Thread support

    +Supporting threads requires that the collector be able to find and suspend +all threads potentially accessing the garbage-collected heap, and locate +any state associated with each thread that must be traced. +

    +The functionality needed for thread support is generally implemented +in one or more files specific to the particular thread interface. +For example, somewhat portable pthread support is implemented +in pthread_support.c and pthread_stop_world.c. +The essential functionality consists of +

    +
    GC_stop_world() +
    +Stops all threads which may access the garbage collected heap, other +than the caller. +
    GC_start_world() +
    +Restart other threads. +
    GC_push_all_stacks() +
    +Push the contents of all thread stacks (or at least of pointer-containing +regions in the thread stacks) onto the mark stack. +
    +These very often require that the garbage collector maintain its +own data structures to track active threads. +

    +In addition, LOCK and UNLOCK must be implemented +in gc_locks.h +

    +The easiest case is probably a new pthreads platform +on which threads can be stopped +with signals. In this case, the changes involve: +

      +
    1. Introducing a suitable GC_X_THREADS macro, which should +be automatically defined by gc_config_macros.h in the right cases. +It should also result in a definition of GC_PTHREADS, as for the +existing cases. +
    2. For GC7+, ensuring that the atomic_ops package at least +minimally supports the platform. +If incremental GC is needed, or if pthread locks don't +perform adequately as the allocation lock, you will probably need to +ensure that a sufficient atomic_ops port +exists for the platform to provided an atomic test and set +operation. (Current GC7 versions require moreatomic_ops +support than necessary. This is a bug.) For earlier versions define +GC_test_and_set in gc_locks.h. +
    3. Making any needed adjustments to pthread_stop_world.c and +pthread_support.c. Ideally none should be needed. In fact, +not all of this is as well standardized as one would like, and outright +bugs requiring workarounds are common. +
    +Non-preemptive threads packages will probably require further work. Similarly +thread-local allocation and parallel marking requires further work +in pthread_support.c, and may require better atomic_ops +support. +

    Dynamic library support

    +So long as DATASTART and DATAEND are defined correctly, +the collector will trace memory reachable from file scope or static +variables defined as part of the main executable. This is sufficient +if either the program is statically linked, or if pointers to the +garbage-collected heap are never stored in non-stack variables +defined in dynamic libraries. +

    +If dynamic library data sections must also be traced, then +

      +
    • DYNAMIC_LOADING must be defined in the appropriate section +of gcconfig.h. +
    • An appropriate versions of the functions +GC_register_dynamic_libraries() should be defined in +dyn_load.c. This function should invoke +GC_cond_add_roots(region_start, region_end, TRUE) +on each dynamic library data section. +
    +

    +Implementations that scan for writable data segments are error prone, particularly +in the presence of threads. They frequently result in race conditions +when threads exit and stacks disappear. They may also accidentally trace +large regions of graphics memory, or mapped files. On at least +one occasion they have been known to try to trace device memory that +could not safely be read in the manner the GC wanted to read it. +

    +It is usually safer to walk the dynamic linker data structure, especially +if the linker exports an interface to do so. But beware of poorly documented +locking behavior in this case. +

    Incremental GC support

    +For incremental and generational collection to work, os_dep.c +must contain a suitable "virtual dirty bit" implementation, which +allows the collector to track which heap pages (assumed to be +a multiple of the collectors block size) have been written during +a certain time interval. The collector provides several +implementations, which might be adapted. The default +(DEFAULT_VDB) is a placeholder which treats all pages +as having been written. This ensures correctness, but renders +incremental and generational collection essentially useless. +

    Stack traces for debug support

    +If stack traces in objects are need for debug support, +GC_dave_callers and GC_print_callers must be +implemented. +

    Disclaimer

    +This is an initial pass at porting guidelines. Some things +have no doubt been overlooked. + + diff --git a/doc/scale.html b/doc/scale.html new file mode 100644 index 0000000..ae40ccf --- /dev/null +++ b/doc/scale.html @@ -0,0 +1,200 @@ + + +Garbage collector scalability + + +

    Garbage collector scalability

    +In its default configuration, the Boehm-Demers-Weiser garbage collector +is not thread-safe. It can be made thread-safe for a number of environments +by building the collector with the appropriate +-DXXX-THREADS compilation +flag. This has primarily two effects: +
      +
    1. It causes the garbage collector to stop all other threads when +it needs to see a consistent memory state. +
    2. It causes the collector to acquire a lock around essentially all +allocation and garbage collection activity. +
    +Since a single lock is used for all allocation-related activity, only one +thread can be allocating or collecting at one point. This inherently +limits performance of multi-threaded applications on multiprocessors. +

    +On most platforms, the allocator/collector lock is implemented as a +spin lock with exponential back-off. Longer wait times are implemented +by yielding and/or sleeping. If a collection is in progress, the pure +spinning stage is skipped. This has the advantage that uncontested and +thus most uniprocessor lock acquisitions are very cheap. It has the +disadvantage that the application may sleep for small periods of time +even when there is work to be done. And threads may be unnecessarily +woken up for short periods. Nonetheless, this scheme empirically +outperforms native queue-based mutual exclusion implementations in most +cases, sometimes drastically so. +

    Options for enhanced scalability

    +Version 6.0 of the collector adds two facilities to enhance collector +scalability on multiprocessors. As of 6.0alpha1, these are supported +only under Linux on X86 and IA64 processors, though ports to other +otherwise supported Pthreads platforms should be straightforward. +They are intended to be used together. +
      +
    • +Building the collector with -DPARALLEL_MARK allows the collector to +run the mark phase in parallel in multiple threads, and thus on multiple +processors. The mark phase typically consumes the large majority of the +collection time. Thus this largely parallelizes the garbage collector +itself, though not the allocation process. Currently the marking is +performed by the thread that triggered the collection, together with +N-1 dedicated +threads, where N is the number of processors detected by the collector. +The dedicated threads are created once at initialization time. +

      +A second effect of this flag is to switch to a more concurrent +implementation of GC_malloc_many, so that free lists can be +built, and memory can be cleared, by more than one thread concurrently. +

    • +Building the collector with -DTHREAD_LOCAL_ALLOC adds support for thread +local allocation. This causes GC_malloc, GC_malloc_atomic, and +GC_gcj_malloc to be redefined to perform thread-local allocation. +

      +Memory returned from thread-local allocators is completely interchangeable +with that returned by the standard allocators. It may be used by other +threads. The only difference is that, if the thread allocates enough +memory of a certain kind, it will build a thread-local free list for +objects of that kind, and allocate from that. This greatly reduces +locking. The thread-local free lists are refilled using +GC_malloc_many. +

      +An important side effect of this flag is to replace the default +spin-then-sleep lock to be replaced by a spin-then-queue based implementation. +This reduces performance for the standard allocation functions, +though it usually improves performance when thread-local allocation is +used heavily, and thus the number of short-duration lock acquisitions +is greatly reduced. +

    +

    The Parallel Marking Algorithm

    +We use an algorithm similar to +that developed by +Endo, Taura, and Yonezawa at the University of Tokyo. +However, the data structures and implementation are different, +and represent a smaller change to the original collector source, +probably at the expense of extreme scalability. Some of +the refinements they suggest, e.g. splitting large +objects, were also incorporated into out approach. +

    +The global mark stack is transformed into a global work queue. +Unlike the usual case, it never shrinks during a mark phase. +The mark threads remove objects from the queue by copying them to a +local mark stack and changing the global descriptor to zero, indicating +that there is no more work to be done for this entry. +This removal +is done with no synchronization. Thus it is possible for more than +one worker to remove the same entry, resulting in some work duplication. +

    +The global work queue grows only if a marker thread decides to +return some of its local mark stack to the global one. This +is done if the global queue appears to be running low, or if +the local stack is in danger of overflowing. It does require +synchronization, but should be relatively rare. +

    +The sequential marking code is reused to process local mark stacks. +Hence the amount of additional code required for parallel marking +is minimal. +

    +It should be possible to use generational collection in the presence of the +parallel collector, by calling GC_enable_incremental(). +This does not result in fully incremental collection, since parallel mark +phases cannot currently be interrupted, and doing so may be too +expensive. +

    +Gcj-style mark descriptors do not currently mix with the combination +of local allocation and incremental collection. They should work correctly +with one or the other, but not both. +

    +The number of marker threads is set on startup to the number of +available processors (or to the value of the GC_NPROCS +environment variable). If only a single processor is detected, +parallel marking is disabled. +

    +Note that setting GC_NPROCS to 1 also causes some lock acquisitions inside +the collector to immediately yield the processor instead of busy waiting +first. In the case of a multiprocessor and a client with multiple +simultaneously runnable threads, this may have disastrous performance +consequences (e.g. a factor of 10 slowdown). +

    Performance

    +We conducted some simple experiments with a version of +our GC benchmark +that was slightly modified to +run multiple concurrent client threads in the same address space. +Each client thread does the same work as the original benchmark, but they share +a heap. +This benchmark involves very little work outside of memory allocation. +This was run with GC 6.0alpha3 on a dual processor Pentium III/500 machine +under Linux 2.2.12. +

    +Running with a thread-unsafe collector, the benchmark ran in 9 +seconds. With the simple thread-safe collector, +built with -DLINUX_THREADS, the execution time +increased to 10.3 seconds, or 23.5 elapsed seconds with two clients. +(The times for the malloc/free version +with glibc malloc +are 10.51 (standard library, pthreads not linked), +20.90 (one thread, pthreads linked), +and 24.55 seconds respectively. The benchmark favors a +garbage collector, since most objects are small.) +

    +The following table gives execution times for the collector built +with parallel marking and thread-local allocation support +(-DGC_LINUX_THREADS -DPARALLEL_MARK -DTHREAD_LOCAL_ALLOC). We tested +the client using either one or two marker threads, and running +one or two client threads. Note that the client uses thread local +allocation exclusively. With -DTHREAD_LOCAL_ALLOC the collector +switches to a locking strategy that is better tuned to less frequent +lock acquisition. The standard allocation primitives thus perform +slightly worse than without -DTHREAD_LOCAL_ALLOC, and should be +avoided in time-critical code. +

    +(The results using pthread_mutex_lock +directly for allocation locking would have been worse still, at +least for older versions of linuxthreads. +With THREAD_LOCAL_ALLOC, we first repeatedly try to acquire the +lock with pthread_mutex_try_lock(), busy-waiting between attempts. +After a fixed number of attempts, we use pthread_mutex_lock().) +

    +These measurements do not use incremental collection, nor was prefetching +enabled in the marker. We used the C version of the benchmark. +All measurements are in elapsed seconds on an unloaded machine. +

    + + + + + +
    Number of threads1 marker thread (secs.)2 marker threads (secs.)
    1 client10.457.85
    2 clients19.9512.3
    + +The execution time for the single threaded case is slightly worse than with +simple locking. However, even the single-threaded benchmark runs faster than +even the thread-unsafe version if a second processor is available. +The execution time for two clients with thread local allocation time is +only 1.4 times the sequential execution time for a single thread in a +thread-unsafe environment, even though it involves twice the client work. +That represents close to a +factor of 2 improvement over the 2 client case with the old collector. +The old collector clearly +still suffered from some contention overhead, in spite of the fact that the +locking scheme had been fairly well tuned. +

    +Full linear speedup (i.e. the same execution time for 1 client on one +processor as 2 clients on 2 processors) +is probably not achievable on this kind of +hardware even with such a small number of processors, +since the memory system is +a major constraint for the garbage collector, +the processors usually share a single memory bus, and thus +the aggregate memory bandwidth does not increase in +proportion to the number of processors. +

    +These results are likely to be very sensitive to both hardware and OS +issues. Preliminary experiments with an older Pentium Pro machine running +an older kernel were far less encouraging. + + + diff --git a/doc/simple_example.html b/doc/simple_example.html new file mode 100644 index 0000000..8d605f3 --- /dev/null +++ b/doc/simple_example.html @@ -0,0 +1,213 @@ + + + + +Using the Garbage Collector: A simple example + + +

    Using the Garbage Collector: A simple example

    +The following consists of step-by-step instructions for building and +using the collector. We'll assume a Linux/gcc platform and +a single-threaded application. The green +text contains information about other platforms or scenarios. +It can be skipped, especially on first reading. +

    Building the collector

    +If you have not so yet, unpack the collector and enter +the newly created directory with +
    +tar xvfz gc<version>.tar.gz
+cd gc<version>
+
    +

    +You can configure, build, and install the collector in a private +directory, say /home/xyz/gc, with the following commands: +

    +./configure --prefix=/home/xyz/gc --disable-threads
+make
+make check
+make install
+
    +Here the "make check" command is optional, but highly recommended. +It runs a basic correctness test which usually takes well under a minute. +

    Other platforms

    + +On non-Unix, non-Linux platforms, the collector is usually built by copying +the appropriate makefile (see the platform-specific README in doc/README.xxx +in the distribution) to the file "Makefile", and then typing "make" +(or "nmake" or ...). This builds the library in the source tree. You may +want to move it and the files in the include directory to a more convenient +place. + +

    + +If you use a makefile that does not require running a configure script, +you should first look at the makefile, and adjust any options that are +documented there. + +

    + +If your platform provides a "make" utility, that is generally preferred +to platform- and compiler- dependent "project" files. (At least that is the +strong preference of the would-be maintainer of those project files.) + +

    Threads

    + +If you need thread support, configure the collector with + +
    +--enable-threads=posix --enable-parallel-mark
+
    + +instead of +--disable-threads +If your target is a real old-fashioned uniprocessor (no "hyperthreading", +etc.) you will want to omit --enable-parallel-mark. + +

    C++

    + +You will need to include the C++ support, which unfortunately tends to +be among the least portable parts of the collector, since it seems +to rely on some corner cases of the language. On Linux, it +suffices to add --enable-cplusplus to the configure options. + +

    Writing the program

    +You will need a +
    +#include "gc.h"
+
    +at the beginning of every file that allocates memory through the +garbage collector. Call GC_MALLOC wherever you would +have call malloc. This initializes memory to zero like +calloc; there is no need to explicitly clear the +result. +

    +If you know that an object will not contain pointers to the +garbage-collected heap, and you don't need it to be initialized, +call GC_MALLOC_ATOMIC instead. +

    +A function GC_FREE is provided but need not be called. +For very small objects, your program will probably perform better if +you do not call it, and let the collector do its job. +

    +A GC_REALLOC function behaves like the C library realloc. +It allocates uninitialized pointer-free memory if the original +object was allocated that way. +

    +The following program loop.c is a trivial example: +

    +#include "gc.h"
+#include <assert.h>
+#include <stdio.h>
+
+int main()
+{
+  int i;
+
+  GC_INIT();
+  for (i = 0; i < 10000000; ++i)
+   {
+     int **p = (int **) GC_MALLOC(sizeof(int *));
+     int *q = (int *) GC_MALLOC_ATOMIC(sizeof(int));
+     assert(*p == 0);
+     *p = (int *) GC_REALLOC(q, 2 * sizeof(int));
+     if (i % 100000 == 0)
+       printf("Heap size = %d\n", GC_get_heap_size());
+   }
+  return 0;
+}
+
    +

    Interaction with the system malloc

    + +It is usually best not to mix garbage-collected allocation with the system +malloc-free. If you do, you need to be careful not to store +pointers to the garbage-collected heap in memory allocated with the system +malloc. + + +

    Other Platforms

    + +On some other platforms it is necessary to call GC_INIT() from the main program, +which is presumed to be part of the main executable, not a dynamic library. +This can never hurt, and is thus generally good practice. + + +

    Threads

    + +For a multi-threaded program, some more rules apply: + +
      +
    • + +Files that either allocate through the GC or make thread-related calls +should first define the macro GC_THREADS, and then +include "gc.h". On some platforms this will redefine some +threads primitives, e.g. to let the collector keep track of thread creation. + +
    + +

    C++

    + +In the case of C++, you need to be especially careful not to store pointers +to the garbage-collected heap in areas that are not traced by the collector. +The collector includes some alternate interfaces +to make that easier. + + +

    Debugging

    + +Additional debug checks can be performed by defining GC_DEBUG before +including gc.h. Additional options are available if the collector +is also built with --enable-gc-debug (--enable-full-debug in +some older versions) and all allocations are +performed with GC_DEBUG defined. + + +

    What if I can't rewrite/recompile my program?

    + +You may be able to build the collector with --enable-redirect-malloc +and set the LD_PRELOAD environment variable to point to the resulting +library, thus replacing the standard malloc with its garbage-collected +counterpart. This is rather platform dependent. See the +leak detection documentation for some more details. + + +

    Compiling and linking

    + +The above application loop.c test program can be compiled and linked +with + +
    +cc -I/home/xyz/gc/include loop.c /home/xyz/gc/lib/libgc.a -o loop
+
    + +The -I option directs the compiler to the right include +directory. In this case, we list the static library +directly on the compile line; the dynamic library could have been +used instead, provided we arranged for the dynamic loader to find +it, e.g. by setting LD_LIBRARY_PATH. + +

    Threads

    + +On pthread platforms, you will of course also have to link with +-lpthread, +and compile with any thread-safety options required by your compiler. +On some platforms, you may also need to link with -ldl +or -lrt. +Looking at tools/threadlibs.c should give you the appropriate +list if a plain -lpthread doesn't work. + + +

    Running the executable

    + +The executable can of course be run normally, e.g. by typing + +
    +./loop
+
    + +The operation of the collector is affected by a number of environment variables. +For example, setting GC_PRINT_STATS produces some +GC statistics on stdout. +See README.environment in the distribution for details. + + diff --git a/doc/tree.html b/doc/tree.html new file mode 100644 index 0000000..2bfd583 --- /dev/null +++ b/doc/tree.html @@ -0,0 +1,195 @@ + + + Two-Level Tree Structure for Fast Pointer Lookup + Hans-J. Boehm, Silicon Graphics (now at HP) + + +

    Two-Level Tree Structure for Fast Pointer Lookup

    +

    +The BDWGC conservative garbage collector uses a 2-level tree +data structure to aid in fast pointer identification. +This data structure is described in a bit more detail here, since +

      +
    1. Variations of the data structure are more generally useful. +
    2. It appears to be hard to understand by reading the code. +
    3. Some other collectors appear to use inferior data structures to +solve the same problem. +
    4. It is central to fast collector operation. +
    +A candidate pointer is divided into three sections, the high, +middle, and low bits. The exact division between these +three groups of bits is dependent on the detailed collector configuration. +

    +The high and middle bits are used to look up an entry in the table described +here. The resulting table entry consists of either a block descriptor +(struct hblkhdr * or hdr *) +identifying the layout of objects in the block, or an indication that this +address range corresponds to the middle of a large block, together with a +hint for locating the actual block descriptor. Such a hint consist +of a displacement that can be subtracted from the middle bits of the candidate +pointer without leaving the object. +

    +In either case, the block descriptor (struct hblkhdr) +refers to a table of object starting addresses (the hb_map field). +The starting address table is indexed by the low bits if the candidate pointer. +The resulting entry contains a displacement to the beginning of the object, +or an indication that this cannot be a valid object pointer. +(If all interior pointer are recognized, pointers into large objects +are handled specially, as appropriate.) + +

    The Tree

    +

    +The rest of this discussion focuses on the two level data structure +used to map the high and middle bits to the block descriptor. +

    +The high bits are used as an index into the GC_top_index (really +GC_arrays._top_index) array. Each entry points to a +bottom_index data structure. This structure in turn consists +mostly of an array index indexed by the middle bits of +the candidate pointer. The index array contains the actual +hdr pointers. +

    +Thus a pointer lookup consists primarily of a handful of memory references, +and can be quite fast: +

      +
    1. The appropriate bottom_index pointer is looked up in +GC_top_index, based on the high bits of the candidate pointer. +
    2. The appropriate hdr pointer is looked up in the +bottom_index structure, based on the middle bits. +
    3. The block layout map pointer is retrieved from the hdr +structure. (This memory reference is necessary since we try to share +block layout maps.) +
    4. The displacement to the beginning of the object is retrieved from the +above map. +
    +

    +In order to conserve space, not all GC_top_index entries in fact +point to distinct bottom_index structures. If no address with +the corresponding high bits is part of the heap, then the entry points +to GC_all_nils, a single bottom_index structure consisting +only of NULL hdr pointers. +

    +Bottom_index structures contain slightly more information than +just hdr pointers. The asc_link field is used to link +all bottom_index structures in ascending order for fast traversal. +This list is pointed to be GC_all_bottom_indices. +It is maintained with the aid of key field that contains the +high bits corresponding to the bottom_index. + +

    64 bit addresses

    +

    +In the case of 64 bit addresses, this picture is complicated slightly +by the fact that one of the index structures would have to be huge to +cover the entire address space with a two level tree. We deal with this +by turning GC_top_index into a chained hash table, instead of +a simple array. This adds a hash_link field to the +bottom_index structure. +

    +The "hash function" consists of dropping the high bits. This is cheap to +compute, and guarantees that there will be no collisions if the heap +is contiguous and not excessively large. + +

    A picture

    +

    +The following is an ASCII diagram of the data structure. +This was contributed by Dave Barrett several years ago. +

    +
+                Data Structure used by GC_base in gc3.7:
+                              21-Apr-94
+
+
+
+
+    63                  LOG_TOP_SZ[11]  LOG_BOTTOM_SZ[10]   LOG_HBLKSIZE[13]
+   +------------------+----------------+------------------+------------------+
+ p:|                  |   TL_HASH(hi)  |                  |   HBLKDISPL(p)   |
+   +------------------+----------------+------------------+------------------+
+    \-----------------------HBLKPTR(p)-------------------/
+    \------------hi-------------------/
+                      \______ ________/ \________ _______/ \________ _______/
+                             V                   V                  V
+                             |                   |                  |
+           GC_top_index[]    |                   |                  |
+ ---      +--------------+   |                   |                  |
+  ^       |              |   |                   |                  |
+  |       |              |   |                   |                  |
+ TOP      +--------------+<--+                   |                  |
+ _SZ   +-<|      []      | *                     |                  |
+(items)|  +--------------+  if 0 < bi< HBLKSIZE  |                  |
+  |    |  |              | then large object     |                  |
+  |    |  |              | starts at the bi'th   |                  |
+  v    |  |              | HBLK before p.        |             i    |
+ ---   |  +--------------+                       |          (word-  |
+       v                                         |         aligned) |
+   bi= |GET_BI(p){->hash_link}->key==hi          |                  |
+       v                                         |                  |
+       |   (bottom_index)  \ scratch_alloc'd     |                  |
+       |   ( struct  bi )  / by get_index()      |                  |
+ ---   +->+--------------+                       |                  |
+  ^       |              |                       |                  |
+  ^       |              |                       |                  |
+ BOTTOM   |              |   ha=GET_HDR_ADDR(p)  |                  |
+_SZ(items)+--------------+<----------------------+          +-------+
+  |   +--<|   index[]    |                                  |
+  |   |   +--------------+                      GC_obj_map: v
+  |   |   |              |              from      / +-+-+-----+-+-+-+-+  ---
+  v   |   |              |              GC_add   < 0| | |     | | | | |   ^
+ ---  |   +--------------+             _map_entry \ +-+-+-----+-+-+-+-+   |
+      |   |   asc_link   |                          +-+-+-----+-+-+-+-+ MAXOBJSZ
+      |   +--------------+                      +-->| | |  j  | | | | |  +1
+      |   |     key      |                      |   +-+-+-----+-+-+-+-+   |
+      |   +--------------+                      |   +-+-+-----+-+-+-+-+   |
+      |   |  hash_link   |                      |   | | |     | | | | |   v
+      |   +--------------+                      |   +-+-+-----+-+-+-+-+  ---
+      |                                         |   |<--MAX_OFFSET--->|
+      |                                         |         (bytes)
+HDR(p)| GC_find_header(p)                       |   |<--MAP_ENTRIES-->|
+      |                           \ from        |    =HBLKSIZE/WORDSZ
+      |    (hdr) (struct hblkhdr) / alloc_hdr() |    (1024 on Alpha)
+      +-->+----------------------+              |    (8/16 bits each)
+GET_HDR(p)| word   hb_sz (words) |              |
+          +----------------------+              |
+          | struct hblk *hb_next |              |
+          +----------------------+              |
+          |mark_proc hb_mark_proc|              |
+          +----------------------+              |
+          | char * hb_map        |>-------------+
+          +----------------------+
+          | ushort hb_obj_kind   |
+          +----------------------+
+          |   hb_last_reclaimed  |
+ ---      +----------------------+
+  ^       |                      |
+ MARK_BITS|       hb_marks[]     | *if hdr is free, hb_sz
+_SZ(words)|                      |  is the size of a heap chunk (struct hblk)
+  v       |                      |  of at least MININCR*HBLKSIZE bytes (below),
+ ---      +----------------------+  otherwise, size of each object in chunk.
+
+Dynamic data structures above are interleaved throughout the heap in blocks of
+size MININCR * HBLKSIZE bytes as done by gc_scratch_alloc which cannot be
+freed; free lists are used (e.g. alloc_hdr).  HBLK's below are collected.
+
+              (struct hblk)                                  HDR_BYTES
+ ---      +----------------------+ < HBLKSIZE  ---            (bytes)
+  ^       +-----hb_body----------+ (and WORDSZ) ^         ---   ---
+  |       |                      |   aligned    |          ^     ^
+  |       |                      |              |        hb_sz   |
+  |       |                      |              |       (words)  |
+  |       |      Object 0        |              |          |     |
+  |       |                      |            i |(word-    v     |
+  |       + - - - - - - - - - - -+ ---   (bytes)|aligned) ---    |
+  |       |                      |  ^           |          ^     |
+  |       |                      |  j (words)   |          |     |
+  n *     |      Object 1        |  v           v        hb_sz BODY_SZ
+ HBLKSIZE |                      |---------------          |   (words)
+ (bytes)  |                      |                         v   MAX_OFFSET
+  |       + - - - - - - - - - - -+                        ---  (bytes)
+  |       |                      | !ALL_INTERIOR_POINTERS  ^     |
+  |       |                      | sets j only for       hb_sz   |
+  |       |      Object N        | valid object offsets.   |     |
+  v       |                      | All objects WORDSZ      v     v
+ ---      +----------------------+ aligned.               ---   ---
+
+
    + diff --git a/dyn_load.c b/dyn_load.c new file mode 100644 index 0000000..0f36f77 --- /dev/null +++ b/dyn_load.c @@ -0,0 +1,1539 @@ +/* + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1997 by Silicon Graphics. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +/* + * This is incredibly OS specific code for tracking down data sections in + * dynamic libraries. There appears to be no way of doing this quickly + * without groveling through undocumented data structures. We would argue + * that this is a bug in the design of the dlopen interface. THIS CODE + * MAY BREAK IN FUTURE OS RELEASES. If this matters to you, don't hesitate + * to let your vendor know ... + * + * None of this is safe with dlclose and incremental collection. + * But then not much of anything is safe in the presence of dlclose. + */ + +#if !defined(MACOS) && !defined(_WIN32_WCE) && !defined(__CC_ARM) +# include +#endif + +/* BTL: avoid circular redefinition of dlopen if GC_SOLARIS_THREADS defined */ +#undef GC_MUST_RESTORE_REDEFINED_DLOPEN +#if defined(GC_PTHREADS) && !defined(GC_NO_DLOPEN) \ + && !defined(GC_NO_THREAD_REDIRECTS) && !defined(GC_USE_LD_WRAP) + /* To support threads in Solaris, gc.h interposes on dlopen by */ + /* defining "dlopen" to be "GC_dlopen", which is implemented below. */ + /* However, both GC_FirstDLOpenedLinkMap() and GC_dlopen() use the */ + /* real system dlopen() in their implementation. We first remove */ + /* gc.h's dlopen definition and restore it later, after GC_dlopen(). */ +# undef dlopen +# define GC_MUST_RESTORE_REDEFINED_DLOPEN +#endif /* !GC_NO_DLOPEN */ + +/* A user-supplied routine (custom filter) that might be called to */ +/* determine whether a DSO really needs to be scanned by the GC. */ +/* 0 means no filter installed. May be unused on some platforms. */ +/* FIXME: Add filter support for more platforms. */ +STATIC GC_has_static_roots_func GC_has_static_roots = 0; + +#if (defined(DYNAMIC_LOADING) || defined(MSWIN32) || defined(MSWINCE) \ + || defined(CYGWIN32)) && !defined(PCR) + +#if !defined(DARWIN) && !defined(SCO_ELF) && !defined(SOLARISDL) \ + && !defined(AIX) && !defined(DGUX) && !defined(IRIX5) && !defined(HPUX) \ + && !defined(CYGWIN32) && !defined(MSWIN32) && !defined(MSWINCE) \ + && !(defined(ALPHA) && defined(OSF1)) \ + && !(defined(FREEBSD) && defined(__ELF__)) \ + && !((defined(LINUX) || defined(NACL)) && defined(__ELF__)) \ + && !(defined(NETBSD) && defined(__ELF__)) && !defined(HURD) \ + && !(defined(OPENBSD) && (defined(__ELF__) || defined(M68K))) \ + && !defined(CPPCHECK) +# error We only know how to find data segments of dynamic libraries for above. +# error Additional SVR4 variants might not be too hard to add. +#endif + +#include +#ifdef SOLARISDL +# include +# include +# include +#endif + +#if defined(NETBSD) +# include +# include +# include +# define ELFSIZE ARCH_ELFSIZE +#endif + +#if defined(OPENBSD) +# include +# if (OpenBSD >= 200519) && !defined(HAVE_DL_ITERATE_PHDR) +# define HAVE_DL_ITERATE_PHDR +# endif +#endif /* OPENBSD */ + +#if defined(SCO_ELF) || defined(DGUX) || defined(HURD) \ + || (defined(__ELF__) && (defined(LINUX) || defined(FREEBSD) \ + || defined(NACL) || defined(NETBSD) \ + || defined(OPENBSD))) +# include +# if !defined(OPENBSD) && !defined(PLATFORM_ANDROID) + /* OpenBSD does not have elf.h file; link.h below is sufficient. */ + /* Exclude Android because linker.h below includes its own version. */ +# include +# endif +# ifdef PLATFORM_ANDROID + /* If you don't need the "dynamic loading" feature, you may build */ + /* the collector with -D IGNORE_DYNAMIC_LOADING. */ +# ifdef BIONIC_ELFDATA_REDEF_BUG + /* Workaround a problem in Bionic (as of Android 4.2) which has */ + /* mismatching ELF_DATA definitions in sys/exec_elf.h and */ + /* asm/elf.h included from linker.h file (similar to EM_ALPHA). */ +# include +# include +# undef ELF_DATA +# undef EM_ALPHA +# endif +# include +# if !defined(GC_DONT_DEFINE_LINK_MAP) && !(__ANDROID_API__ >= 21) + /* link_map and r_debug are defined in link.h of NDK r10+. */ + /* bionic/linker/linker.h defines them too but the header */ + /* itself is a C++ one starting from Android 4.3. */ + struct link_map { + uintptr_t l_addr; + char* l_name; + uintptr_t l_ld; + struct link_map* l_next; + struct link_map* l_prev; + }; + struct r_debug { + int32_t r_version; + struct link_map* r_map; + void (*r_brk)(void); + int32_t r_state; + uintptr_t r_ldbase; + }; +# endif +# else +# include +# endif +#endif + +/* Newer versions of GNU/Linux define this macro. We + * define it similarly for any ELF systems that don't. */ +# ifndef ElfW +# if defined(FREEBSD) +# if __ELF_WORD_SIZE == 32 +# define ElfW(type) Elf32_##type +# else +# define ElfW(type) Elf64_##type +# endif +# elif defined(NETBSD) || defined(OPENBSD) +# if ELFSIZE == 32 +# define ElfW(type) Elf32_##type +# else +# define ElfW(type) Elf64_##type +# endif +# else +# if !defined(ELF_CLASS) || ELF_CLASS == ELFCLASS32 +# define ElfW(type) Elf32_##type +# else +# define ElfW(type) Elf64_##type +# endif +# endif +# endif + +#if defined(SOLARISDL) && !defined(USE_PROC_FOR_LIBRARIES) + +#ifdef LINT + Elf32_Dyn _DYNAMIC; +#endif + +STATIC struct link_map * +GC_FirstDLOpenedLinkMap(void) +{ + extern ElfW(Dyn) _DYNAMIC; + ElfW(Dyn) *dp; + static struct link_map * cachedResult = 0; + static ElfW(Dyn) *dynStructureAddr = 0; + /* BTL: added to avoid Solaris 5.3 ld.so _DYNAMIC bug */ + +# ifdef SUNOS53_SHARED_LIB + /* BTL: Avoid the Solaris 5.3 bug that _DYNAMIC isn't being set */ + /* up properly in dynamically linked .so's. This means we have */ + /* to use its value in the set of original object files loaded */ + /* at program startup. */ + if( dynStructureAddr == 0 ) { + void* startupSyms = dlopen(0, RTLD_LAZY); + dynStructureAddr = (ElfW(Dyn)*)(word)dlsym(startupSyms, "_DYNAMIC"); + } +# else + dynStructureAddr = &_DYNAMIC; +# endif + + if (0 == COVERT_DATAFLOW(dynStructureAddr)) { + /* _DYNAMIC symbol not resolved. */ + return(0); + } + if (cachedResult == 0) { + int tag; + for( dp = ((ElfW(Dyn) *)(&_DYNAMIC)); (tag = dp->d_tag) != 0; dp++ ) { + if (tag == DT_DEBUG) { + struct r_debug *rd = (struct r_debug *)dp->d_un.d_ptr; + if (rd != NULL) { + struct link_map *lm = rd->r_map; + if (lm != NULL) + cachedResult = lm->l_next; /* might be NULL */ + } + break; + } + } + } + return cachedResult; +} + +#endif /* SOLARISDL ... */ + +/* BTL: added to fix circular dlopen definition if GC_SOLARIS_THREADS defined */ +# ifdef GC_MUST_RESTORE_REDEFINED_DLOPEN +# define dlopen GC_dlopen +# endif + +# if defined(SOLARISDL) + +/* Add dynamic library data sections to the root set. */ +# if !defined(PCR) && !defined(GC_SOLARIS_THREADS) && defined(THREADS) \ + && !defined(CPPCHECK) +# error Fix mutual exclusion with dlopen +# endif + +# ifndef USE_PROC_FOR_LIBRARIES +GC_INNER void GC_register_dynamic_libraries(void) +{ + struct link_map *lm; + + for (lm = GC_FirstDLOpenedLinkMap(); lm != 0; lm = lm->l_next) { + ElfW(Ehdr) * e; + ElfW(Phdr) * p; + unsigned long offset; + char * start; + int i; + + e = (ElfW(Ehdr) *) lm->l_addr; + p = ((ElfW(Phdr) *)(((char *)(e)) + e->e_phoff)); + offset = ((unsigned long)(lm->l_addr)); + for( i = 0; i < (int)e->e_phnum; i++, p++ ) { + switch( p->p_type ) { + case PT_LOAD: + { + if( !(p->p_flags & PF_W) ) break; + start = ((char *)(p->p_vaddr)) + offset; + GC_add_roots_inner( + start, + start + p->p_memsz, + TRUE + ); + } + break; + default: + break; + } + } + } +} + +# endif /* !USE_PROC ... */ +# endif /* SOLARISDL */ + +#if defined(SCO_ELF) || defined(DGUX) || defined(HURD) \ + || (defined(__ELF__) && (defined(LINUX) || defined(FREEBSD) \ + || defined(NACL) || defined(NETBSD) \ + || defined(OPENBSD))) + +#ifdef USE_PROC_FOR_LIBRARIES + +#include + +#include +#include +#include + +#define MAPS_BUF_SIZE (32*1024) + +/* Sort an array of HeapSects by start address. */ +/* Unfortunately at least some versions of */ +/* Linux qsort end up calling malloc by way of sysconf, and hence can't */ +/* be used in the collector. Hence we roll our own. Should be */ +/* reasonably fast if the array is already mostly sorted, as we expect */ +/* it to be. */ +static void sort_heap_sects(struct HeapSect *base, size_t number_of_elements) +{ + signed_word n = (signed_word)number_of_elements; + signed_word nsorted = 1; + + while (nsorted < n) { + signed_word i; + + while (nsorted < n && + (word)base[nsorted-1].hs_start < (word)base[nsorted].hs_start) + ++nsorted; + if (nsorted == n) break; + GC_ASSERT((word)base[nsorted-1].hs_start > (word)base[nsorted].hs_start); + i = nsorted - 1; + while (i >= 0 && (word)base[i].hs_start > (word)base[i+1].hs_start) { + struct HeapSect tmp = base[i]; + base[i] = base[i+1]; + base[i+1] = tmp; + --i; + } + GC_ASSERT((word)base[nsorted-1].hs_start < (word)base[nsorted].hs_start); + ++nsorted; + } +} + +STATIC word GC_register_map_entries(char *maps) +{ + char *prot; + char *buf_ptr = maps; + ptr_t start, end; + unsigned int maj_dev; + ptr_t least_ha, greatest_ha; + unsigned i; + + GC_ASSERT(I_HOLD_LOCK()); + sort_heap_sects(GC_our_memory, GC_n_memory); + least_ha = GC_our_memory[0].hs_start; + greatest_ha = GC_our_memory[GC_n_memory-1].hs_start + + GC_our_memory[GC_n_memory-1].hs_bytes; + + for (;;) { + buf_ptr = GC_parse_map_entry(buf_ptr, &start, &end, &prot, + &maj_dev, 0); + if (buf_ptr == NULL) return 1; + if (prot[1] == 'w') { + /* This is a writable mapping. Add it to */ + /* the root set unless it is already otherwise */ + /* accounted for. */ + if ((word)start <= (word)GC_stackbottom + && (word)end >= (word)GC_stackbottom) { + /* Stack mapping; discard */ + continue; + } +# ifdef THREADS + /* This may fail, since a thread may already be */ + /* unregistered, but its thread stack may still be there. */ + /* That can fail because the stack may disappear while */ + /* we're marking. Thus the marker is, and has to be */ + /* prepared to recover from segmentation faults. */ + + if (GC_segment_is_thread_stack(start, end)) continue; + + /* FIXME: NPTL squirrels */ + /* away pointers in pieces of the stack segment that we */ + /* don't scan. We work around this */ + /* by treating anything allocated by libpthread as */ + /* uncollectible, as we do in some other cases. */ + /* A specifically identified problem is that */ + /* thread stacks contain pointers to dynamic thread */ + /* vectors, which may be reused due to thread caching. */ + /* They may not be marked if the thread is still live. */ + /* This specific instance should be addressed by */ + /* INCLUDE_LINUX_THREAD_DESCR, but that doesn't quite */ + /* seem to suffice. */ + /* We currently trace entire thread stacks, if they are */ + /* are currently cached but unused. This is */ + /* very suboptimal for performance reasons. */ +# endif + /* We no longer exclude the main data segment. */ + if ((word)end <= (word)least_ha + || (word)start >= (word)greatest_ha) { + /* The easy case; just trace entire segment */ + GC_add_roots_inner((char *)start, (char *)end, TRUE); + continue; + } + /* Add sections that don't belong to us. */ + i = 0; + while ((word)(GC_our_memory[i].hs_start + + GC_our_memory[i].hs_bytes) < (word)start) + ++i; + GC_ASSERT(i < GC_n_memory); + if ((word)GC_our_memory[i].hs_start <= (word)start) { + start = GC_our_memory[i].hs_start + + GC_our_memory[i].hs_bytes; + ++i; + } + while (i < GC_n_memory + && (word)GC_our_memory[i].hs_start < (word)end + && (word)start < (word)end) { + if ((word)start < (word)GC_our_memory[i].hs_start) + GC_add_roots_inner((char *)start, + GC_our_memory[i].hs_start, TRUE); + start = GC_our_memory[i].hs_start + + GC_our_memory[i].hs_bytes; + ++i; + } + if ((word)start < (word)end) + GC_add_roots_inner((char *)start, (char *)end, TRUE); + } + } + return 1; +} + +GC_INNER void GC_register_dynamic_libraries(void) +{ + if (!GC_register_map_entries(GC_get_maps())) + ABORT("Failed to read /proc for library registration"); +} + +/* We now take care of the main data segment ourselves: */ +GC_INNER GC_bool GC_register_main_static_data(void) +{ + return FALSE; +} + +# define HAVE_REGISTER_MAIN_STATIC_DATA + +#else /* !USE_PROC_FOR_LIBRARIES */ + +/* The following is the preferred way to walk dynamic libraries */ +/* for glibc 2.2.4+. Unfortunately, it doesn't work for older */ +/* versions. Thanks to Jakub Jelinek for most of the code. */ + +#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \ + || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)) \ + || defined(PLATFORM_ANDROID) /* Are others OK here, too? */ +# ifndef HAVE_DL_ITERATE_PHDR +# define HAVE_DL_ITERATE_PHDR +# endif +# ifdef PLATFORM_ANDROID + /* Android headers might have no such definition for some targets. */ + int dl_iterate_phdr(int (*cb)(struct dl_phdr_info *, size_t, void *), + void *data); +# endif +#endif /* __GLIBC__ >= 2 || PLATFORM_ANDROID */ + +#if (defined(FREEBSD) && __FreeBSD__ >= 7) || defined(__DragonFly__) + /* On the FreeBSD system, any target system at major version 7 shall */ + /* have dl_iterate_phdr; therefore, we need not make it weak as below. */ +# ifndef HAVE_DL_ITERATE_PHDR +# define HAVE_DL_ITERATE_PHDR +# endif +# define DL_ITERATE_PHDR_STRONG +#elif defined(HAVE_DL_ITERATE_PHDR) + /* We have the header files for a glibc that includes dl_iterate_phdr.*/ + /* It may still not be available in the library on the target system. */ + /* Thus we also treat it as a weak symbol. */ +# pragma weak dl_iterate_phdr +#endif + +#if defined(HAVE_DL_ITERATE_PHDR) + +# ifdef PT_GNU_RELRO +/* Instead of registering PT_LOAD sections directly, we keep them */ +/* in a temporary list, and filter them by excluding PT_GNU_RELRO */ +/* segments. Processing PT_GNU_RELRO sections with */ +/* GC_exclude_static_roots instead would be superficially cleaner. But */ +/* it runs into trouble if a client registers an overlapping segment, */ +/* which unfortunately seems quite possible. */ + +# define MAX_LOAD_SEGS MAX_ROOT_SETS + + static struct load_segment { + ptr_t start; + ptr_t end; + /* Room for a second segment if we remove a RELRO segment */ + /* from the middle. */ + ptr_t start2; + ptr_t end2; + } load_segs[MAX_LOAD_SEGS]; + + static int n_load_segs; + static GC_bool load_segs_overflow; +# endif /* PT_GNU_RELRO */ + +STATIC int GC_register_dynlib_callback(struct dl_phdr_info * info, + size_t size, void * ptr) +{ + const ElfW(Phdr) * p; + ptr_t start, end; + int i; + + /* Make sure struct dl_phdr_info is at least as big as we need. */ + if (size < offsetof (struct dl_phdr_info, dlpi_phnum) + + sizeof (info->dlpi_phnum)) + return -1; + + p = info->dlpi_phdr; + for (i = 0; i < (int)info->dlpi_phnum; i++, p++) { + if (p->p_type == PT_LOAD) { + GC_has_static_roots_func callback = GC_has_static_roots; + if ((p->p_flags & PF_W) == 0) continue; + + start = (ptr_t)p->p_vaddr + info->dlpi_addr; + end = start + p->p_memsz; + if (callback != 0 && !callback(info->dlpi_name, start, p->p_memsz)) + continue; +# ifdef PT_GNU_RELRO +# if CPP_WORDSZ == 64 + /* TODO: GC_push_all eventually does the correct */ + /* rounding to the next multiple of ALIGNMENT, so, most */ + /* probably, we should remove the corresponding assertion */ + /* check in GC_add_roots_inner along with this code line. */ + /* start pointer value may require aligning. */ + start = (ptr_t)((word)start & ~(word)(sizeof(word) - 1)); +# endif + if (n_load_segs >= MAX_LOAD_SEGS) { + if (!load_segs_overflow) { + WARN("Too many PT_LOAD segments;" + " registering as roots directly...\n", 0); + load_segs_overflow = TRUE; + } + GC_add_roots_inner(start, end, TRUE); + } else { + load_segs[n_load_segs].start = start; + load_segs[n_load_segs].end = end; + load_segs[n_load_segs].start2 = 0; + load_segs[n_load_segs].end2 = 0; + ++n_load_segs; + } +# else + GC_add_roots_inner(start, end, TRUE); +# endif /* !PT_GNU_RELRO */ + } + } + +# ifdef PT_GNU_RELRO + p = info->dlpi_phdr; + for (i = 0; i < (int)info->dlpi_phnum; i++, p++) { + if (p->p_type == PT_GNU_RELRO) { + /* This entry is known to be constant and will eventually be */ + /* remapped as read-only. However, the address range covered */ + /* by this entry is typically a subset of a previously */ + /* encountered "LOAD" segment, so we need to exclude it. */ + int j; + + start = (ptr_t)p->p_vaddr + info->dlpi_addr; + end = start + p->p_memsz; + for (j = n_load_segs; --j >= 0; ) { + if ((word)start >= (word)load_segs[j].start + && (word)start < (word)load_segs[j].end) { + if (load_segs[j].start2 != 0) { + WARN("More than one GNU_RELRO segment per load one\n",0); + } else { + GC_ASSERT((word)end <= (word)load_segs[j].end); + /* Remove from the existing load segment */ + load_segs[j].end2 = load_segs[j].end; + load_segs[j].end = start; + load_segs[j].start2 = end; + } + break; + } + if (0 == j && 0 == GC_has_static_roots) + WARN("Failed to find PT_GNU_RELRO segment" + " inside PT_LOAD region\n", 0); + /* No warning reported in case of the callback is present */ + /* because most likely the segment has been excluded. */ + } + } + } +# endif + + *(int *)ptr = 1; /* Signal that we were called */ + return 0; +} + +/* Do we need to separately register the main static data segment? */ +GC_INNER GC_bool GC_register_main_static_data(void) +{ +# ifdef DL_ITERATE_PHDR_STRONG + /* If dl_iterate_phdr is not a weak symbol then don't test against */ + /* zero (otherwise a compiler might issue a warning). */ + return FALSE; +# else + return 0 == COVERT_DATAFLOW(dl_iterate_phdr); +# endif +} + +/* Return TRUE if we succeed, FALSE if dl_iterate_phdr wasn't there. */ +STATIC GC_bool GC_register_dynamic_libraries_dl_iterate_phdr(void) +{ + int did_something; + if (GC_register_main_static_data()) + return FALSE; + +# ifdef PT_GNU_RELRO + { + static GC_bool excluded_segs = FALSE; + n_load_segs = 0; + load_segs_overflow = FALSE; + if (!EXPECT(excluded_segs, TRUE)) { + GC_exclude_static_roots_inner((ptr_t)load_segs, + (ptr_t)load_segs + sizeof(load_segs)); + excluded_segs = TRUE; + } + } +# endif + + did_something = 0; + dl_iterate_phdr(GC_register_dynlib_callback, &did_something); + if (did_something) { +# ifdef PT_GNU_RELRO + int i; + + for (i = 0; i < n_load_segs; ++i) { + if ((word)load_segs[i].end > (word)load_segs[i].start) { + GC_add_roots_inner(load_segs[i].start, load_segs[i].end, TRUE); + } + if ((word)load_segs[i].end2 > (word)load_segs[i].start2) { + GC_add_roots_inner(load_segs[i].start2, load_segs[i].end2, TRUE); + } + } +# endif + } else { + char *datastart; + char *dataend; +# ifdef DATASTART_IS_FUNC + static ptr_t datastart_cached = (ptr_t)(word)-1; + + /* Evaluate DATASTART only once. */ + if (datastart_cached == (ptr_t)(word)-1) { + datastart_cached = DATASTART; + } + datastart = (char *)datastart_cached; +# else + datastart = DATASTART; +# endif +# ifdef DATAEND_IS_FUNC + { + static ptr_t dataend_cached = 0; + /* Evaluate DATAEND only once. */ + if (dataend_cached == 0) { + dataend_cached = DATAEND; + } + dataend = (char *)dataend_cached; + } +# else + dataend = DATAEND; +# endif + if (NULL == *(char * volatile *)&datastart + || (word)datastart > (word)dataend) + ABORT_ARG2("Wrong DATASTART/END pair", + ": %p .. %p", (void *)datastart, (void *)dataend); + + /* dl_iterate_phdr may forget the static data segment in */ + /* statically linked executables. */ + GC_add_roots_inner(datastart, dataend, TRUE); +# ifdef GC_HAVE_DATAREGION2 + if ((word)DATASTART2 - 1U >= (word)DATAEND2) { + /* Subtract one to check also for NULL */ + /* without a compiler warning. */ + ABORT_ARG2("Wrong DATASTART/END2 pair", + ": %p .. %p", (void *)DATASTART2, (void *)DATAEND2); + } + GC_add_roots_inner(DATASTART2, DATAEND2, TRUE); +# endif + } + return TRUE; +} + +# define HAVE_REGISTER_MAIN_STATIC_DATA + +#else /* !HAVE_DL_ITERATE_PHDR */ + +/* Dynamic loading code for Linux running ELF. Somewhat tested on + * Linux/x86, untested but hopefully should work on Linux/Alpha. + * This code was derived from the Solaris/ELF support. Thanks to + * whatever kind soul wrote that. - Patrick Bridges */ + +/* This doesn't necessarily work in all cases, e.g. with preloaded + * dynamic libraries. */ + +# if defined(NETBSD) || defined(OPENBSD) +# include + /* for compatibility with 1.4.x */ +# ifndef DT_DEBUG +# define DT_DEBUG 21 +# endif +# ifndef PT_LOAD +# define PT_LOAD 1 +# endif +# ifndef PF_W +# define PF_W 2 +# endif +# elif !defined(PLATFORM_ANDROID) +# include +# endif + +# ifndef PLATFORM_ANDROID +# include +# endif + +#endif /* !HAVE_DL_ITERATE_PHDR */ + +#ifdef __GNUC__ +# pragma weak _DYNAMIC +#endif +extern ElfW(Dyn) _DYNAMIC[]; + +STATIC struct link_map * +GC_FirstDLOpenedLinkMap(void) +{ + static struct link_map *cachedResult = 0; + + if (0 == COVERT_DATAFLOW(_DYNAMIC)) { + /* _DYNAMIC symbol not resolved. */ + return(0); + } + if( cachedResult == 0 ) { +# if defined(NETBSD) && defined(RTLD_DI_LINKMAP) +# if defined(CPPCHECK) +# define GC_RTLD_DI_LINKMAP 2 +# else +# define GC_RTLD_DI_LINKMAP RTLD_DI_LINKMAP +# endif + struct link_map *lm = NULL; + if (!dlinfo(RTLD_SELF, GC_RTLD_DI_LINKMAP, &lm) && lm != NULL) { + /* Now lm points link_map object of libgc. Since it */ + /* might not be the first dynamically linked object, */ + /* try to find it (object next to the main object). */ + while (lm->l_prev != NULL) { + lm = lm->l_prev; + } + cachedResult = lm->l_next; + } +# else + ElfW(Dyn) *dp; + int tag; + + for( dp = _DYNAMIC; (tag = dp->d_tag) != 0; dp++ ) { + if (tag == DT_DEBUG) { + struct r_debug *rd = (struct r_debug *)dp->d_un.d_ptr; + /* d_ptr could be null if libs are linked statically. */ + if (rd != NULL) { + struct link_map *lm = rd->r_map; + if (lm != NULL) + cachedResult = lm->l_next; /* might be NULL */ + } + break; + } + } +# endif /* !NETBSD || !RTLD_DI_LINKMAP */ + } + return cachedResult; +} + +GC_INNER void GC_register_dynamic_libraries(void) +{ + struct link_map *lm; + +# ifdef HAVE_DL_ITERATE_PHDR + if (GC_register_dynamic_libraries_dl_iterate_phdr()) { + return; + } +# endif + for (lm = GC_FirstDLOpenedLinkMap(); lm != 0; lm = lm->l_next) + { + ElfW(Ehdr) * e; + ElfW(Phdr) * p; + unsigned long offset; + char * start; + int i; + + e = (ElfW(Ehdr) *) lm->l_addr; +# ifdef PLATFORM_ANDROID + if (e == NULL) + continue; +# endif + p = ((ElfW(Phdr) *)(((char *)(e)) + e->e_phoff)); + offset = ((unsigned long)(lm->l_addr)); + for( i = 0; i < (int)e->e_phnum; i++, p++ ) { + switch( p->p_type ) { + case PT_LOAD: + { + if( !(p->p_flags & PF_W) ) break; + start = ((char *)(p->p_vaddr)) + offset; + GC_add_roots_inner(start, start + p->p_memsz, TRUE); + } + break; + default: + break; + } + } + } +} + +#endif /* !USE_PROC_FOR_LIBRARIES */ + +#endif /* LINUX */ + +#if defined(IRIX5) || (defined(USE_PROC_FOR_LIBRARIES) && !defined(LINUX)) + +#include +#include +#include +#include +#include +#include /* Only for the following test. */ +#ifndef _sigargs +# define IRIX6 +#endif + +/* We use /proc to track down all parts of the address space that are */ +/* mapped by the process, and throw out regions we know we shouldn't */ +/* worry about. This may also work under other SVR4 variants. */ +GC_INNER void GC_register_dynamic_libraries(void) +{ + static int fd = -1; + char buf[30]; + static prmap_t * addr_map = 0; + static int current_sz = 0; /* Number of records currently in addr_map */ + int needed_sz = 0; /* Required size of addr_map */ + int i; + long flags; + ptr_t start; + ptr_t limit; + ptr_t heap_start = HEAP_START; + ptr_t heap_end = heap_start; + +# ifdef SOLARISDL +# define MA_PHYS 0 +# endif /* SOLARISDL */ + + if (fd < 0) { + (void)snprintf(buf, sizeof(buf), "/proc/%ld", (long)getpid()); + buf[sizeof(buf) - 1] = '\0'; + /* The above generates a lint complaint, since pid_t varies. */ + /* It's unclear how to improve this. */ + fd = open(buf, O_RDONLY); + if (fd < 0) { + ABORT("/proc open failed"); + } + } + if (ioctl(fd, PIOCNMAP, &needed_sz) < 0) { + ABORT_ARG2("/proc PIOCNMAP ioctl failed", + ": fd = %d, errno = %d", fd, errno); + } + if (needed_sz >= current_sz) { + GC_scratch_recycle_no_gww(addr_map, + (size_t)current_sz * sizeof(prmap_t)); + current_sz = needed_sz * 2 + 1; + /* Expansion, plus room for 0 record */ + addr_map = (prmap_t *)GC_scratch_alloc( + (size_t)current_sz * sizeof(prmap_t)); + if (addr_map == NULL) + ABORT("Insufficient memory for address map"); + } + if (ioctl(fd, PIOCMAP, addr_map) < 0) { + ABORT_ARG3("/proc PIOCMAP ioctl failed", + ": errcode= %d, needed_sz= %d, addr_map= %p", + errno, needed_sz, (void *)addr_map); + }; + if (GC_n_heap_sects > 0) { + heap_end = GC_heap_sects[GC_n_heap_sects-1].hs_start + + GC_heap_sects[GC_n_heap_sects-1].hs_bytes; + if ((word)heap_end < (word)GC_scratch_last_end_ptr) + heap_end = GC_scratch_last_end_ptr; + } + for (i = 0; i < needed_sz; i++) { + flags = addr_map[i].pr_mflags; + if ((flags & (MA_BREAK | MA_STACK | MA_PHYS + | MA_FETCHOP | MA_NOTCACHED)) != 0) goto irrelevant; + if ((flags & (MA_READ | MA_WRITE)) != (MA_READ | MA_WRITE)) + goto irrelevant; + /* The latter test is empirically useless in very old Irix */ + /* versions. Other than the */ + /* main data and stack segments, everything appears to be */ + /* mapped readable, writable, executable, and shared(!!). */ + /* This makes no sense to me. - HB */ + start = (ptr_t)(addr_map[i].pr_vaddr); + if (GC_roots_present(start)) goto irrelevant; + if ((word)start < (word)heap_end && (word)start >= (word)heap_start) + goto irrelevant; + + limit = start + addr_map[i].pr_size; + /* The following seemed to be necessary for very old versions */ + /* of Irix, but it has been reported to discard relevant */ + /* segments under Irix 6.5. */ +# ifndef IRIX6 + if (addr_map[i].pr_off == 0 && strncmp(start, ELFMAG, 4) == 0) { + /* Discard text segments, i.e. 0-offset mappings against */ + /* executable files which appear to have ELF headers. */ + caddr_t arg; + int obj; +# define MAP_IRR_SZ 10 + static ptr_t map_irr[MAP_IRR_SZ]; + /* Known irrelevant map entries */ + static int n_irr = 0; + struct stat buf; + register int j; + + for (j = 0; j < n_irr; j++) { + if (map_irr[j] == start) goto irrelevant; + } + arg = (caddr_t)start; + obj = ioctl(fd, PIOCOPENM, &arg); + if (obj >= 0) { + fstat(obj, &buf); + close(obj); + if ((buf.st_mode & 0111) != 0) { + if (n_irr < MAP_IRR_SZ) { + map_irr[n_irr++] = start; + } + goto irrelevant; + } + } + } +# endif /* !IRIX6 */ + GC_add_roots_inner(start, limit, TRUE); + irrelevant: ; + } + /* Don't keep cached descriptor, for now. Some kernels don't like us */ + /* to keep a /proc file descriptor around during kill -9. */ + if (close(fd) < 0) ABORT("Couldn't close /proc file"); + fd = -1; +} + +# endif /* USE_PROC || IRIX5 */ + +# if defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32) + +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN 1 +# endif +# define NOSERVICE +# include +# include + + /* We traverse the entire address space and register all segments */ + /* that could possibly have been written to. */ + STATIC void GC_cond_add_roots(char *base, char * limit) + { +# ifdef GC_WIN32_THREADS + char * curr_base = base; + char * next_stack_lo; + char * next_stack_hi; + + if (base == limit) return; + for(;;) { + GC_get_next_stack(curr_base, limit, &next_stack_lo, &next_stack_hi); + if ((word)next_stack_lo >= (word)limit) break; + if ((word)next_stack_lo > (word)curr_base) + GC_add_roots_inner(curr_base, next_stack_lo, TRUE); + curr_base = next_stack_hi; + } + if ((word)curr_base < (word)limit) + GC_add_roots_inner(curr_base, limit, TRUE); +# else + char * stack_top + = (char *)((word)GC_approx_sp() & + ~(word)(GC_sysinfo.dwAllocationGranularity - 1)); + + if (base == limit) return; + if ((word)limit > (word)stack_top + && (word)base < (word)GC_stackbottom) { + /* Part of the stack; ignore it. */ + return; + } + GC_add_roots_inner(base, limit, TRUE); +# endif + } + +#ifdef DYNAMIC_LOADING + /* GC_register_main_static_data is not needed unless DYNAMIC_LOADING. */ + GC_INNER GC_bool GC_register_main_static_data(void) + { +# if defined(MSWINCE) || defined(CYGWIN32) + /* Do we need to separately register the main static data segment? */ + return FALSE; +# else + return GC_no_win32_dlls; +# endif + } +# define HAVE_REGISTER_MAIN_STATIC_DATA +#endif /* DYNAMIC_LOADING */ + +# ifdef DEBUG_VIRTUALQUERY + void GC_dump_meminfo(MEMORY_BASIC_INFORMATION *buf) + { + GC_printf("BaseAddress = 0x%lx, AllocationBase = 0x%lx," + " RegionSize = 0x%lx(%lu)\n", buf -> BaseAddress, + buf -> AllocationBase, buf -> RegionSize, buf -> RegionSize); + GC_printf("\tAllocationProtect = 0x%lx, State = 0x%lx, Protect = 0x%lx, " + "Type = 0x%lx\n", buf -> AllocationProtect, buf -> State, + buf -> Protect, buf -> Type); + } +# endif /* DEBUG_VIRTUALQUERY */ + +# if defined(MSWINCE) || defined(CYGWIN32) + /* FIXME: Should we really need to scan MEM_PRIVATE sections? */ + /* For now, we don't add MEM_PRIVATE sections to the data roots for */ + /* WinCE because otherwise SEGV fault sometimes happens to occur in */ + /* GC_mark_from() (and, even if we use WRAP_MARK_SOME, WinCE prints */ + /* a "Data Abort" message to the debugging console). */ + /* To workaround that, use -DGC_REGISTER_MEM_PRIVATE. */ +# define GC_wnt TRUE +# endif + + GC_INNER void GC_register_dynamic_libraries(void) + { + MEMORY_BASIC_INFORMATION buf; + DWORD protect; + LPVOID p; + char * base; + char * limit, * new_limit; + +# ifdef MSWIN32 + if (GC_no_win32_dlls) return; +# endif + base = limit = p = GC_sysinfo.lpMinimumApplicationAddress; + while ((word)p < (word)GC_sysinfo.lpMaximumApplicationAddress) { + size_t result = VirtualQuery(p, &buf, sizeof(buf)); + +# ifdef MSWINCE + if (result == 0) { + /* Page is free; advance to the next possible allocation base */ + new_limit = (char *) + (((DWORD) p + GC_sysinfo.dwAllocationGranularity) + & ~(GC_sysinfo.dwAllocationGranularity-1)); + } else +# endif + /* else */ { + if (result != sizeof(buf)) { + ABORT("Weird VirtualQuery result"); + } + new_limit = (char *)p + buf.RegionSize; + protect = buf.Protect; + if (buf.State == MEM_COMMIT + && (protect == PAGE_EXECUTE_READWRITE + || protect == PAGE_READWRITE) + && (buf.Type == MEM_IMAGE +# ifdef GC_REGISTER_MEM_PRIVATE + || (protect == PAGE_READWRITE && buf.Type == MEM_PRIVATE) +# else + /* There is some evidence that we cannot always */ + /* ignore MEM_PRIVATE sections under Windows ME */ + /* and predecessors. Hence we now also check for */ + /* that case. */ + || (!GC_wnt && buf.Type == MEM_PRIVATE) +# endif + ) + && !GC_is_heap_base(buf.AllocationBase)) { +# ifdef DEBUG_VIRTUALQUERY + GC_dump_meminfo(&buf); +# endif + if ((char *)p != limit) { + GC_cond_add_roots(base, limit); + base = p; + } + limit = new_limit; + } + } + if ((word)p > (word)new_limit /* overflow */) break; + p = (LPVOID)new_limit; + } + GC_cond_add_roots(base, limit); + } + +#endif /* MSWIN32 || MSWINCE || CYGWIN32 */ + +#if defined(ALPHA) && defined(OSF1) + +#include + +extern char *sys_errlist[]; +extern int sys_nerr; +extern int errno; + +GC_INNER void GC_register_dynamic_libraries(void) +{ + ldr_module_t moduleid = LDR_NULL_MODULE; + ldr_process_t mypid = ldr_my_process(); /* obtain id of this process */ + + /* For each module */ + while (TRUE) { + ldr_module_info_t moduleinfo; + size_t modulereturnsize; + ldr_region_t region; + ldr_region_info_t regioninfo; + size_t regionreturnsize; + int status = ldr_next_module(mypid, &moduleid); + /* Get the next (first) module */ + + /* Any more modules? */ + if (moduleid == LDR_NULL_MODULE) + break; /* No more modules */ + + /* Check status AFTER checking moduleid because */ + /* of a bug in the non-shared ldr_next_module stub. */ + if (status != 0) { + ABORT_ARG3("ldr_next_module failed", + ": status= %d, errcode= %d (%s)", status, errno, + errno < sys_nerr ? sys_errlist[errno] : ""); + } + + /* Get the module information */ + status = ldr_inq_module(mypid, moduleid, &moduleinfo, + sizeof(moduleinfo), &modulereturnsize); + if (status != 0 ) + ABORT("ldr_inq_module failed"); + + /* is module for the main program (i.e. nonshared portion)? */ + if (moduleinfo.lmi_flags & LDR_MAIN) + continue; /* skip the main module */ + +# ifdef DL_VERBOSE + GC_log_printf("---Module---\n"); + GC_log_printf("Module ID\t = %16ld\n", moduleinfo.lmi_modid); + GC_log_printf("Count of regions = %16d\n", moduleinfo.lmi_nregion); + GC_log_printf("flags for module = %16lx\n", moduleinfo.lmi_flags); + GC_log_printf("module pathname\t = \"%s\"\n", moduleinfo.lmi_name); +# endif + + /* For each region in this module */ + for (region = 0; region < moduleinfo.lmi_nregion; region++) { + /* Get the region information */ + status = ldr_inq_region(mypid, moduleid, region, ®ioninfo, + sizeof(regioninfo), ®ionreturnsize); + if (status != 0 ) + ABORT("ldr_inq_region failed"); + + /* only process writable (data) regions */ + if (! (regioninfo.lri_prot & LDR_W)) + continue; + +# ifdef DL_VERBOSE + GC_log_printf("--- Region ---\n"); + GC_log_printf("Region number\t = %16ld\n", + regioninfo.lri_region_no); + GC_log_printf("Protection flags = %016x\n", regioninfo.lri_prot); + GC_log_printf("Virtual address\t = %16p\n", regioninfo.lri_vaddr); + GC_log_printf("Mapped address\t = %16p\n", + regioninfo.lri_mapaddr); + GC_log_printf("Region size\t = %16ld\n", regioninfo.lri_size); + GC_log_printf("Region name\t = \"%s\"\n", regioninfo.lri_name); +# endif + + /* register region as a garbage collection root */ + GC_add_roots_inner((char *)regioninfo.lri_mapaddr, + (char *)regioninfo.lri_mapaddr + regioninfo.lri_size, + TRUE); + + } + } +} +#endif + +#if defined(HPUX) + +#include +#include + +extern char *sys_errlist[]; +extern int sys_nerr; + +GC_INNER void GC_register_dynamic_libraries(void) +{ + int index = 1; /* Ordinal position in shared library search list */ + + /* For each dynamic library loaded */ + while (TRUE) { + struct shl_descriptor *shl_desc; /* Shared library info, see dl.h */ + int status = shl_get(index, &shl_desc); + /* Get info about next shared library */ + + /* Check if this is the end of the list or if some error occurred */ + if (status != 0) { +# ifdef GC_HPUX_THREADS + /* I've seen errno values of 0. The man page is not clear */ + /* as to whether errno should get set on a -1 return. */ + break; +# else + if (errno == EINVAL) { + break; /* Moved past end of shared library list --> finished */ + } else { + ABORT_ARG3("shl_get failed", + ": status= %d, errcode= %d (%s)", status, errno, + errno < sys_nerr ? sys_errlist[errno] : ""); + } +# endif + } + +# ifdef DL_VERBOSE + GC_log_printf("---Shared library---\n"); + GC_log_printf("\tfilename\t= \"%s\"\n", shl_desc->filename); + GC_log_printf("\tindex\t\t= %d\n", index); + GC_log_printf("\thandle\t\t= %08x\n", + (unsigned long) shl_desc->handle); + GC_log_printf("\ttext seg.start\t= %08x\n", shl_desc->tstart); + GC_log_printf("\ttext seg.end\t= %08x\n", shl_desc->tend); + GC_log_printf("\tdata seg.start\t= %08x\n", shl_desc->dstart); + GC_log_printf("\tdata seg.end\t= %08x\n", shl_desc->dend); + GC_log_printf("\tref.count\t= %lu\n", shl_desc->ref_count); +# endif + + /* register shared library's data segment as a garbage collection root */ + GC_add_roots_inner((char *) shl_desc->dstart, + (char *) shl_desc->dend, TRUE); + + index++; + } +} +#endif /* HPUX */ + +#ifdef AIX +# pragma alloca +# include +# include + GC_INNER void GC_register_dynamic_libraries(void) + { + int ldibuflen = 8192; + + for (;;) { + int len; + struct ld_info *ldi; +# if defined(CPPCHECK) + char ldibuf[ldibuflen]; +# else + char *ldibuf = alloca(ldibuflen); +# endif + + len = loadquery(L_GETINFO, ldibuf, ldibuflen); + if (len < 0) { + if (errno != ENOMEM) { + ABORT("loadquery failed"); + } + ldibuflen *= 2; + continue; + } + + ldi = (struct ld_info *)ldibuf; + while (ldi) { + len = ldi->ldinfo_next; + GC_add_roots_inner( + ldi->ldinfo_dataorg, + (ptr_t)(unsigned long)ldi->ldinfo_dataorg + + ldi->ldinfo_datasize, + TRUE); + ldi = len ? (struct ld_info *)((char *)ldi + len) : 0; + } + break; + } + } +#endif /* AIX */ + +#ifdef DARWIN + +/* __private_extern__ hack required for pre-3.4 gcc versions. */ +#ifndef __private_extern__ +# define __private_extern__ extern +# include +# undef __private_extern__ +#else +# include +#endif +#include + +/*#define DARWIN_DEBUG*/ + +/* Writable sections generally available on Darwin. */ +STATIC const struct { + const char *seg; + const char *sect; +} GC_dyld_sections[] = { + { SEG_DATA, SECT_DATA }, + /* Used by FSF GCC, but not by OS X system tools, so far. */ + { SEG_DATA, "__static_data" }, + { SEG_DATA, SECT_BSS }, + { SEG_DATA, SECT_COMMON }, + /* FSF GCC - zero-sized object sections for targets */ + /*supporting section anchors. */ + { SEG_DATA, "__zobj_data" }, + { SEG_DATA, "__zobj_bss" } +}; + +/* Additional writable sections: */ +/* GCC on Darwin constructs aligned sections "on demand", where */ +/* the alignment size is embedded in the section name. */ +/* Furthermore, there are distinctions between sections */ +/* containing private vs. public symbols. It also constructs */ +/* sections specifically for zero-sized objects, when the */ +/* target supports section anchors. */ +STATIC const char * const GC_dyld_add_sect_fmts[] = { + "__bss%u", + "__pu_bss%u", + "__zo_bss%u", + "__zo_pu_bss%u" +}; + +/* Currently, mach-o will allow up to the max of 2^15 alignment */ +/* in an object file. */ +#ifndef L2_MAX_OFILE_ALIGNMENT +# define L2_MAX_OFILE_ALIGNMENT 15 +#endif + +STATIC const char *GC_dyld_name_for_hdr(const struct GC_MACH_HEADER *hdr) +{ + unsigned long i, c; + c = _dyld_image_count(); + for (i = 0; i < c; i++) + if ((const struct GC_MACH_HEADER *)_dyld_get_image_header(i) == hdr) + return _dyld_get_image_name(i); + return NULL; +} + +/* This should never be called by a thread holding the lock. */ +STATIC void GC_dyld_image_add(const struct GC_MACH_HEADER *hdr, + intptr_t slide) +{ + unsigned long start, end; + unsigned i, j; + const struct GC_MACH_SECTION *sec; + const char *name; + GC_has_static_roots_func callback = GC_has_static_roots; + DCL_LOCK_STATE; + + if (GC_no_dls) return; +# ifdef DARWIN_DEBUG + name = GC_dyld_name_for_hdr(hdr); +# else + name = callback != 0 ? GC_dyld_name_for_hdr(hdr) : NULL; +# endif + for (i = 0; i < sizeof(GC_dyld_sections)/sizeof(GC_dyld_sections[0]); i++) { + sec = GC_GETSECTBYNAME(hdr, GC_dyld_sections[i].seg, + GC_dyld_sections[i].sect); + if (sec == NULL || sec->size < sizeof(word)) + continue; + start = slide + sec->addr; + end = start + sec->size; + LOCK(); + /* The user callback is called holding the lock. */ + if (callback == 0 || callback(name, (void*)start, (size_t)sec->size)) { +# ifdef DARWIN_DEBUG + GC_log_printf( + "Adding section __DATA,%s at %p-%p (%lu bytes) from image %s\n", + GC_dyld_sections[i].sect, (void*)start, (void*)end, + (unsigned long)sec->size, name); +# endif + GC_add_roots_inner((ptr_t)start, (ptr_t)end, FALSE); + } + UNLOCK(); + } + + /* Sections constructed on demand. */ + for (j = 0; j < sizeof(GC_dyld_add_sect_fmts) / sizeof(char *); j++) { + const char *fmt = GC_dyld_add_sect_fmts[j]; + + /* Add our manufactured aligned BSS sections. */ + for (i = 0; i <= L2_MAX_OFILE_ALIGNMENT; i++) { + char secnam[16]; + + (void)snprintf(secnam, sizeof(secnam), fmt, (unsigned)i); + secnam[sizeof(secnam) - 1] = '\0'; + sec = GC_GETSECTBYNAME(hdr, SEG_DATA, secnam); + if (sec == NULL || sec->size == 0) + continue; + start = slide + sec->addr; + end = start + sec->size; +# ifdef DARWIN_DEBUG + GC_log_printf("Adding on-demand section __DATA,%s at" + " %p-%p (%lu bytes) from image %s\n", + secnam, (void*)start, (void*)end, + (unsigned long)sec->size, name); +# endif + GC_add_roots((char*)start, (char*)end); + } + } + +# ifdef DARWIN_DEBUG + GC_print_static_roots(); +# endif +} + +/* This should never be called by a thread holding the lock. */ +STATIC void GC_dyld_image_remove(const struct GC_MACH_HEADER *hdr, + intptr_t slide) +{ + unsigned long start, end; + unsigned i, j; + const struct GC_MACH_SECTION *sec; + + for (i = 0; i < sizeof(GC_dyld_sections)/sizeof(GC_dyld_sections[0]); i++) { + sec = GC_GETSECTBYNAME(hdr, GC_dyld_sections[i].seg, + GC_dyld_sections[i].sect); + if (sec == NULL || sec->size == 0) + continue; + start = slide + sec->addr; + end = start + sec->size; +# ifdef DARWIN_DEBUG + GC_log_printf( + "Removing section __DATA,%s at %p-%p (%lu bytes) from image %s\n", + GC_dyld_sections[i].sect, (void*)start, (void*)end, + (unsigned long)sec->size, GC_dyld_name_for_hdr(hdr)); +# endif + GC_remove_roots((char*)start, (char*)end); + } + + /* Remove our on-demand sections. */ + for (j = 0; j < sizeof(GC_dyld_add_sect_fmts) / sizeof(char *); j++) { + const char *fmt = GC_dyld_add_sect_fmts[j]; + + for (i = 0; i <= L2_MAX_OFILE_ALIGNMENT; i++) { + char secnam[16]; + + (void)snprintf(secnam, sizeof(secnam), fmt, (unsigned)i); + secnam[sizeof(secnam) - 1] = '\0'; + sec = GC_GETSECTBYNAME(hdr, SEG_DATA, secnam); + if (sec == NULL || sec->size == 0) + continue; + start = slide + sec->addr; + end = start + sec->size; +# ifdef DARWIN_DEBUG + GC_log_printf("Removing on-demand section __DATA,%s at" + " %p-%p (%lu bytes) from image %s\n", secnam, + (void*)start, (void*)end, (unsigned long)sec->size, + GC_dyld_name_for_hdr(hdr)); +# endif + GC_remove_roots((char*)start, (char*)end); + } + } + +# ifdef DARWIN_DEBUG + GC_print_static_roots(); +# endif +} + +GC_INNER void GC_register_dynamic_libraries(void) +{ + /* Currently does nothing. The callbacks are setup by GC_init_dyld() + The dyld library takes it from there. */ +} + +/* The _dyld_* functions have an internal lock so no _dyld functions + can be called while the world is stopped without the risk of a deadlock. + Because of this we MUST setup callbacks BEFORE we ever stop the world. + This should be called BEFORE any thread in created and WITHOUT the + allocation lock held. */ + +GC_INNER void GC_init_dyld(void) +{ + static GC_bool initialized = FALSE; + + if (initialized) return; + +# ifdef DARWIN_DEBUG + GC_log_printf("Registering dyld callbacks...\n"); +# endif + + /* Apple's Documentation: + When you call _dyld_register_func_for_add_image, the dynamic linker + runtime calls the specified callback (func) once for each of the images + that is currently loaded into the program. When a new image is added to + the program, your callback is called again with the mach_header for the + new image, and the virtual memory slide amount of the new image. + + This WILL properly register already linked libraries and libraries + linked in the future. + */ + _dyld_register_func_for_add_image( + (void (*)(const struct mach_header*, intptr_t))GC_dyld_image_add); + _dyld_register_func_for_remove_image( + (void (*)(const struct mach_header*, intptr_t))GC_dyld_image_remove); + /* Structure mach_header64 has the same fields */ + /* as mach_header except for the reserved one */ + /* at the end, so these casts are OK. */ + + /* Set this early to avoid reentrancy issues. */ + initialized = TRUE; + +# ifdef NO_DYLD_BIND_FULLY_IMAGE + /* FIXME: What should we do in this case? */ +# else + if (GC_no_dls) return; /* skip main data segment registration */ + + /* When the environment variable is set, the dynamic linker binds */ + /* all undefined symbols the application needs at launch time. */ + /* This includes function symbols that are normally bound lazily at */ + /* the time of their first invocation. */ + if (GETENV("DYLD_BIND_AT_LAUNCH") == 0) { + /* The environment variable is unset, so we should bind manually. */ +# ifdef DARWIN_DEBUG + GC_log_printf("Forcing full bind of GC code...\n"); +# endif + /* FIXME: '_dyld_bind_fully_image_containing_address' is deprecated. */ + if (!_dyld_bind_fully_image_containing_address( + (unsigned long *)GC_malloc)) + ABORT("_dyld_bind_fully_image_containing_address failed"); + } +# endif +} + +#define HAVE_REGISTER_MAIN_STATIC_DATA +GC_INNER GC_bool GC_register_main_static_data(void) +{ + /* Already done through dyld callbacks */ + return FALSE; +} + +#endif /* DARWIN */ + +#elif defined(PCR) + +# include "il/PCR_IL.h" +# include "th/PCR_ThCtl.h" +# include "mm/PCR_MM.h" + + GC_INNER void GC_register_dynamic_libraries(void) + { + /* Add new static data areas of dynamically loaded modules. */ + PCR_IL_LoadedFile * p = PCR_IL_GetLastLoadedFile(); + PCR_IL_LoadedSegment * q; + + /* Skip uncommitted files */ + while (p != NIL && !(p -> lf_commitPoint)) { + /* The loading of this file has not yet been committed */ + /* Hence its description could be inconsistent. */ + /* Furthermore, it hasn't yet been run. Hence its data */ + /* segments can't possibly reference heap allocated */ + /* objects. */ + p = p -> lf_prev; + } + for (; p != NIL; p = p -> lf_prev) { + for (q = p -> lf_ls; q != NIL; q = q -> ls_next) { + if ((q -> ls_flags & PCR_IL_SegFlags_Traced_MASK) + == PCR_IL_SegFlags_Traced_on) { + GC_add_roots_inner((char *)(q -> ls_addr), + (char *)(q -> ls_addr) + q -> ls_bytes, TRUE); + } + } + } + } +#endif /* PCR && !DYNAMIC_LOADING && !MSWIN32 */ + +#if !defined(HAVE_REGISTER_MAIN_STATIC_DATA) && defined(DYNAMIC_LOADING) + /* Do we need to separately register the main static data segment? */ + GC_INNER GC_bool GC_register_main_static_data(void) + { + return TRUE; + } +#endif /* HAVE_REGISTER_MAIN_STATIC_DATA */ + +/* Register a routine to filter dynamic library registration. */ +GC_API void GC_CALL GC_register_has_static_roots_callback( + GC_has_static_roots_func callback) +{ + GC_has_static_roots = callback; +} diff --git a/extra/AmigaOS.c b/extra/AmigaOS.c new file mode 100644 index 0000000..d8311ee --- /dev/null +++ b/extra/AmigaOS.c @@ -0,0 +1,541 @@ + + +/****************************************************************** + + AmigaOS-specific routines for GC. + This file is normally included from os_dep.c + +******************************************************************/ + + +#if !defined(GC_AMIGA_DEF) && !defined(GC_AMIGA_SB) && !defined(GC_AMIGA_DS) && !defined(GC_AMIGA_AM) +# include "private/gc_priv.h" +# include +# include +# define GC_AMIGA_DEF +# define GC_AMIGA_SB +# define GC_AMIGA_DS +# define GC_AMIGA_AM +#endif + + +#ifdef GC_AMIGA_DEF + +# ifndef __GNUC__ +# include +# endif +# include +# include +# include +# include + +#endif + + + + +#ifdef GC_AMIGA_SB + +/****************************************************************** + Find the base of the stack. +******************************************************************/ + +ptr_t GC_get_main_stack_base(void) +{ + struct Process *proc = (struct Process*)SysBase->ThisTask; + + /* Reference: Amiga Guru Book Pages: 42,567,574 */ + if (proc->pr_Task.tc_Node.ln_Type==NT_PROCESS + && proc->pr_CLI != NULL) { + /* first ULONG is StackSize */ + /*longPtr = proc->pr_ReturnAddr; + size = longPtr[0];*/ + + return (char *)proc->pr_ReturnAddr + sizeof(ULONG); + } else { + return (char *)proc->pr_Task.tc_SPUpper; + } +} + +#endif + + +#ifdef GC_AMIGA_DS +/****************************************************************** + Register data segments. +******************************************************************/ + + void GC_register_data_segments(void) + { + struct Process *proc; + struct CommandLineInterface *cli; + BPTR myseglist; + ULONG *data; + +# ifdef __GNUC__ + ULONG dataSegSize; + GC_bool found_segment = FALSE; + extern char __data_size[]; + + dataSegSize=__data_size+8; + /* Can`t find the Location of __data_size, because + it`s possible that is it, inside the segment. */ + +# endif + + proc= (struct Process*)SysBase->ThisTask; + + /* Reference: Amiga Guru Book Pages: 538ff,565,573 + and XOper.asm */ + myseglist = proc->pr_SegList; + if (proc->pr_Task.tc_Node.ln_Type==NT_PROCESS) { + if (proc->pr_CLI != NULL) { + /* ProcLoaded 'Loaded as a command: '*/ + cli = BADDR(proc->pr_CLI); + myseglist = cli->cli_Module; + } + } else { + ABORT("Not a Process."); + } + + if (myseglist == NULL) { + ABORT("Arrrgh.. can't find segments, aborting"); + } + + /* xoper hunks Shell Process */ + + for (data = (ULONG *)BADDR(myseglist); data != NULL; + data = (ULONG *)BADDR(data[0])) { + if ((ULONG)GC_register_data_segments < (ULONG)(&data[1]) + || (ULONG)GC_register_data_segments > (ULONG)(&data[1]) + + data[-1]) { +# ifdef __GNUC__ + if (dataSegSize == data[-1]) { + found_segment = TRUE; + } +# endif + GC_add_roots_inner((char *)&data[1], + ((char *)&data[1]) + data[-1], FALSE); + } + } /* for */ +# ifdef __GNUC__ + if (!found_segment) { + ABORT("Can`t find correct Segments.\nSolution: Use an newer version of ixemul.library"); + } +# endif + } + +#endif + + + +#ifdef GC_AMIGA_AM + +#ifndef GC_AMIGA_FASTALLOC + +void *GC_amiga_allocwrapper(size_t size,void *(*AllocFunction)(size_t size2)){ + return (*AllocFunction)(size); +} + +void *(*GC_amiga_allocwrapper_do)(size_t size,void *(*AllocFunction)(size_t size2)) + =GC_amiga_allocwrapper; + +#else + + + + +void *GC_amiga_allocwrapper_firsttime(size_t size,void *(*AllocFunction)(size_t size2)); + +void *(*GC_amiga_allocwrapper_do)(size_t size,void *(*AllocFunction)(size_t size2)) + =GC_amiga_allocwrapper_firsttime; + + +/****************************************************************** + Amiga-specific routines to obtain memory, and force GC to give + back fast-mem whenever possible. + These hacks makes gc-programs go many times faster when + the Amiga is low on memory, and are therefore strictly necessary. + + -Kjetil S. Matheussen, 2000. +******************************************************************/ + + + +/* List-header for all allocated memory. */ + +struct GC_Amiga_AllocedMemoryHeader{ + ULONG size; + struct GC_Amiga_AllocedMemoryHeader *next; +}; +struct GC_Amiga_AllocedMemoryHeader *GC_AMIGAMEM=(struct GC_Amiga_AllocedMemoryHeader *)(int)~(NULL); + + + +/* Type of memory. Once in the execution of a program, this might change to MEMF_ANY|MEMF_CLEAR */ + +ULONG GC_AMIGA_MEMF = MEMF_FAST | MEMF_CLEAR; + + +/* Prevents GC_amiga_get_mem from allocating memory if this one is TRUE. */ +#ifndef GC_AMIGA_ONLYFAST +BOOL GC_amiga_dontalloc=FALSE; +#endif + +#ifdef GC_AMIGA_PRINTSTATS +int succ=0,succ2=0; +int nsucc=0,nsucc2=0; +int nullretries=0; +int numcollects=0; +int chipa=0; +int allochip=0; +int allocfast=0; +int cur0=0; +int cur1=0; +int cur10=0; +int cur50=0; +int cur150=0; +int cur151=0; +int ncur0=0; +int ncur1=0; +int ncur10=0; +int ncur50=0; +int ncur150=0; +int ncur151=0; +#endif + +/* Free everything at program-end. */ + +void GC_amiga_free_all_mem(void){ + struct GC_Amiga_AllocedMemoryHeader *gc_am=(struct GC_Amiga_AllocedMemoryHeader *)(~(int)(GC_AMIGAMEM)); + +#ifdef GC_AMIGA_PRINTSTATS + printf("\n\n" + "%d bytes of chip-mem, and %d bytes of fast-mem where allocated from the OS.\n", + allochip,allocfast + ); + printf( + "%d bytes of chip-mem were returned from the GC_AMIGA_FASTALLOC supported allocating functions.\n", + chipa + ); + printf("\n"); + printf("GC_gcollect was called %d times to avoid returning NULL or start allocating with the MEMF_ANY flag.\n",numcollects); + printf("%d of them was a success. (the others had to use allocation from the OS.)\n",nullretries); + printf("\n"); + printf("Succeeded forcing %d gc-allocations (%d bytes) of chip-mem to be fast-mem.\n",succ,succ2); + printf("Failed forcing %d gc-allocations (%d bytes) of chip-mem to be fast-mem.\n",nsucc,nsucc2); + printf("\n"); + printf( + "Number of retries before succeeding a chip->fast force:\n" + "0: %d, 1: %d, 2-9: %d, 10-49: %d, 50-149: %d, >150: %d\n", + cur0,cur1,cur10,cur50,cur150,cur151 + ); + printf( + "Number of retries before giving up a chip->fast force:\n" + "0: %d, 1: %d, 2-9: %d, 10-49: %d, 50-149: %d, >150: %d\n", + ncur0,ncur1,ncur10,ncur50,ncur150,ncur151 + ); +#endif + + while(gc_am!=NULL){ + struct GC_Amiga_AllocedMemoryHeader *temp = gc_am->next; + FreeMem(gc_am,gc_am->size); + gc_am=(struct GC_Amiga_AllocedMemoryHeader *)(~(int)(temp)); + } +} + +#ifndef GC_AMIGA_ONLYFAST + +/* All memory with address lower than this one is chip-mem. */ + +char *chipmax; + + +/* + * Always set to the last size of memory tried to be allocated. + * Needed to ensure allocation when the size is bigger than 100000. + * + */ +size_t latestsize; + +#endif + + +#ifdef GC_AMIGA_FASTALLOC + +/* + * The actual function that is called with the GET_MEM macro. + * + */ + +void *GC_amiga_get_mem(size_t size){ + struct GC_Amiga_AllocedMemoryHeader *gc_am; + +#ifndef GC_AMIGA_ONLYFAST + if(GC_amiga_dontalloc==TRUE){ + return NULL; + } + + /* We really don't want to use chip-mem, but if we must, then as little as possible. */ + if(GC_AMIGA_MEMF==(MEMF_ANY|MEMF_CLEAR) && size>100000 && latestsize<50000) return NULL; +#endif + + gc_am=AllocMem((ULONG)(size + sizeof(struct GC_Amiga_AllocedMemoryHeader)),GC_AMIGA_MEMF); + if(gc_am==NULL) return NULL; + + gc_am->next=GC_AMIGAMEM; + gc_am->size=size + sizeof(struct GC_Amiga_AllocedMemoryHeader); + GC_AMIGAMEM=(struct GC_Amiga_AllocedMemoryHeader *)(~(int)(gc_am)); + +#ifdef GC_AMIGA_PRINTSTATS + if((char *)gc_amchipmax || ret==NULL){ + if(ret==NULL){ + nsucc++; + nsucc2+=size; + if(rec==0) ncur0++; + if(rec==1) ncur1++; + if(rec>1 && rec<10) ncur10++; + if(rec>=10 && rec<50) ncur50++; + if(rec>=50 && rec<150) ncur150++; + if(rec>=150) ncur151++; + }else{ + succ++; + succ2+=size; + if(rec==0) cur0++; + if(rec==1) cur1++; + if(rec>1 && rec<10) cur10++; + if(rec>=10 && rec<50) cur50++; + if(rec>=50 && rec<150) cur150++; + if(rec>=150) cur151++; + } + } +#endif + + if (((char *)ret)<=chipmax && ret!=NULL && (rec<(size>500000?9:size/5000))){ + ret=GC_amiga_rec_alloc(size,AllocFunction,rec+1); + } + + return ret; +} +#endif + + +/* The allocating-functions defined inside the Amiga-blocks in gc.h is called + * via these functions. + */ + + +void *GC_amiga_allocwrapper_any(size_t size,void *(*AllocFunction)(size_t size2)){ + void *ret; + + GC_amiga_dontalloc=TRUE; /* Pretty tough thing to do, but its indeed necessary. */ + latestsize=size; + + ret=(*AllocFunction)(size); + + if(((char *)ret) <= chipmax){ + if(ret==NULL){ + /* Give GC access to allocate memory. */ +#ifdef GC_AMIGA_GC + if(!GC_dont_gc){ + GC_gcollect(); +#ifdef GC_AMIGA_PRINTSTATS + numcollects++; +#endif + ret=(*AllocFunction)(size); + } + if(ret==NULL) +#endif + { + GC_amiga_dontalloc=FALSE; + ret=(*AllocFunction)(size); + if(ret==NULL){ + WARN("Out of Memory! Returning NIL!\n", 0); + } + } +#ifdef GC_AMIGA_PRINTSTATS + else{ + nullretries++; + } + if(ret!=NULL && (char *)ret<=chipmax) chipa+=size; +#endif + } +#ifdef GC_AMIGA_RETRY + else{ + void *ret2; + /* We got chip-mem. Better try again and again and again etc., we might get fast-mem sooner or later... */ + /* Using gctest to check the effectiveness of doing this, does seldom give a very good result. */ + /* However, real programs doesn't normally rapidly allocate and deallocate. */ + if( + AllocFunction!=GC_malloc_uncollectable +#ifdef GC_ATOMIC_UNCOLLECTABLE + && AllocFunction!=GC_malloc_atomic_uncollectable +#endif + ){ + ret2=GC_amiga_rec_alloc(size,AllocFunction,0); + }else{ + ret2=(*AllocFunction)(size); +#ifdef GC_AMIGA_PRINTSTATS + if((char *)ret2chipmax){ + GC_free(ret); + ret=ret2; + }else{ + GC_free(ret2); + } + } +#endif + } + + GC_amiga_dontalloc=FALSE; + + return ret; +} + + + +void (*GC_amiga_toany)(void)=NULL; + +void GC_amiga_set_toany(void (*func)(void)){ + GC_amiga_toany=func; +} + +#endif /* !GC_AMIGA_ONLYFAST */ + + +void *GC_amiga_allocwrapper_fast(size_t size,void *(*AllocFunction)(size_t size2)){ + void *ret; + + ret=(*AllocFunction)(size); + + if(ret==NULL){ + /* Enable chip-mem allocation. */ +#ifdef GC_AMIGA_GC + if(!GC_dont_gc){ + GC_gcollect(); +#ifdef GC_AMIGA_PRINTSTATS + numcollects++; +#endif + ret=(*AllocFunction)(size); + } + if(ret==NULL) +#endif + { +#ifndef GC_AMIGA_ONLYFAST + GC_AMIGA_MEMF=MEMF_ANY | MEMF_CLEAR; + if(GC_amiga_toany!=NULL) (*GC_amiga_toany)(); + GC_amiga_allocwrapper_do=GC_amiga_allocwrapper_any; + return GC_amiga_allocwrapper_any(size,AllocFunction); +#endif + } +#ifdef GC_AMIGA_PRINTSTATS + else{ + nullretries++; + } +#endif + } + + return ret; +} + +void *GC_amiga_allocwrapper_firsttime(size_t size,void *(*AllocFunction)(size_t size2)){ + atexit(&GC_amiga_free_all_mem); + chipmax=(char *)SysBase->MaxLocMem; /* For people still having SysBase in chip-mem, this might speed up a bit. */ + GC_amiga_allocwrapper_do=GC_amiga_allocwrapper_fast; + return GC_amiga_allocwrapper_fast(size,AllocFunction); +} + + +#endif /* GC_AMIGA_FASTALLOC */ + + + +/* + * The wrapped realloc function. + * + */ +void *GC_amiga_realloc(void *old_object,size_t new_size_in_bytes){ +#ifndef GC_AMIGA_FASTALLOC + return GC_realloc(old_object,new_size_in_bytes); +#else + void *ret; + latestsize=new_size_in_bytes; + ret=GC_realloc(old_object,new_size_in_bytes); + if(ret==NULL && new_size_in_bytes != 0 + && GC_AMIGA_MEMF==(MEMF_FAST | MEMF_CLEAR)){ + /* Out of fast-mem. */ +#ifdef GC_AMIGA_GC + if(!GC_dont_gc){ + GC_gcollect(); +#ifdef GC_AMIGA_PRINTSTATS + numcollects++; +#endif + ret=GC_realloc(old_object,new_size_in_bytes); + } + if(ret==NULL) +#endif + { +#ifndef GC_AMIGA_ONLYFAST + GC_AMIGA_MEMF=MEMF_ANY | MEMF_CLEAR; + if(GC_amiga_toany!=NULL) (*GC_amiga_toany)(); + GC_amiga_allocwrapper_do=GC_amiga_allocwrapper_any; + ret=GC_realloc(old_object,new_size_in_bytes); +#endif + } +#ifdef GC_AMIGA_PRINTSTATS + else{ + nullretries++; + } +#endif + } + if(ret==NULL && new_size_in_bytes != 0){ + WARN("Out of Memory! Returning NIL!\n", 0); + } +#ifdef GC_AMIGA_PRINTSTATS + if(((char *)ret) + + 11/22/94 pcb StripAddress the temporary memory handle for 24-bit mode. + 11/30/94 pcb Tracking all memory usage so we can deallocate it all at once. + 02/10/96 pcb Added routine to perform a final collection when +unloading shared library. + + by Patrick C. Beard. + */ +/* Boehm, February 15, 1996 2:55 pm PST */ + +#include +#include +#include +#include +#include +#include + +#define GC_BUILD +#include "gc.h" +#include "private/gc_priv.h" + +/* use 'CODE' resource 0 to get exact location of the beginning of global space. */ + +typedef struct { + unsigned long aboveA5; + unsigned long belowA5; + unsigned long JTSize; + unsigned long JTOffset; +} *CodeZeroPtr, **CodeZeroHandle; + +void* GC_MacGetDataStart(void) +{ + CodeZeroHandle code0 = (CodeZeroHandle)GetResource('CODE', 0); + if (code0) { + long belowA5Size = (**code0).belowA5; + ReleaseResource((Handle)code0); + return (LMGetCurrentA5() - belowA5Size); + } + fprintf(stderr, "Couldn't load the jump table."); + exit(-1); + return 0; +} + +#ifdef USE_TEMPORARY_MEMORY + +/* track the use of temporary memory so it can be freed all at once. */ + +typedef struct TemporaryMemoryBlock TemporaryMemoryBlock, **TemporaryMemoryHandle; + +struct TemporaryMemoryBlock { + TemporaryMemoryHandle nextBlock; + char data[]; +}; + +static TemporaryMemoryHandle theTemporaryMemory = NULL; + +void GC_MacFreeTemporaryMemory(void); + +Ptr GC_MacTemporaryNewPtr(size_t size, Boolean clearMemory) +{ +# if !defined(SHARED_LIBRARY_BUILD) + static Boolean firstTime = true; +# endif + OSErr result; + TemporaryMemoryHandle tempMemBlock; + Ptr tempPtr = nil; + + tempMemBlock = (TemporaryMemoryHandle)TempNewHandle(size + sizeof(TemporaryMemoryBlock), &result); + if (tempMemBlock && result == noErr) { + HLockHi((Handle)tempMemBlock); + tempPtr = (**tempMemBlock).data; + if (clearMemory) memset(tempPtr, 0, size); + tempPtr = StripAddress(tempPtr); + + /* keep track of the allocated blocks. */ + (**tempMemBlock).nextBlock = theTemporaryMemory; + theTemporaryMemory = tempMemBlock; + } + +# if !defined(SHARED_LIBRARY_BUILD) + /* install an exit routine to clean up the memory used at the end. */ + if (firstTime) { + atexit(&GC_MacFreeTemporaryMemory); + firstTime = false; + } +# endif + + return tempPtr; +} + +extern word GC_fo_entries; + +static void perform_final_collection(void) +{ + unsigned i; + word last_fo_entries = 0; + + /* adjust the stack bottom, because CFM calls us from another stack + location. */ + GC_stackbottom = (ptr_t)&i; + + /* try to collect and finalize everything in sight */ + for (i = 0; i < 2 || GC_fo_entries < last_fo_entries; i++) { + last_fo_entries = GC_fo_entries; + GC_gcollect(); + } +} + + +void GC_MacFreeTemporaryMemory(void) +{ +# if defined(SHARED_LIBRARY_BUILD) + /* if possible, collect all memory, and invoke all finalizers. */ + perform_final_collection(); +# endif + + if (theTemporaryMemory != NULL) { +# if !defined(SHARED_LIBRARY_BUILD) + long totalMemoryUsed = 0; +# endif + TemporaryMemoryHandle tempMemBlock = theTemporaryMemory; + while (tempMemBlock != NULL) { + TemporaryMemoryHandle nextBlock = (**tempMemBlock).nextBlock; +# if !defined(SHARED_LIBRARY_BUILD) + totalMemoryUsed += GetHandleSize((Handle)tempMemBlock); +# endif + DisposeHandle((Handle)tempMemBlock); + tempMemBlock = nextBlock; + } + theTemporaryMemory = NULL; + +# if !defined(SHARED_LIBRARY_BUILD) + if (GC_print_stats) { + fprintf(stdout, "[total memory used: %ld bytes.]\n", + totalMemoryUsed); + fprintf(stdout, "[total collections: %lu]\n", + (unsigned long)GC_gc_no); + } +# endif + } +} + +#endif /* USE_TEMPORARY_MEMORY */ + +#if __option(far_data) + + void* GC_MacGetDataEnd(void) + { + CodeZeroHandle code0 = (CodeZeroHandle)GetResource('CODE', 0); + if (code0) { + long aboveA5Size = (**code0).aboveA5; + ReleaseResource((Handle)code0); + return (LMGetCurrentA5() + aboveA5Size); + } + fprintf(stderr, "Couldn't load the jump table."); + exit(-1); + return 0; + } + +#endif /* __option(far_data) */ diff --git a/extra/Mac_files/MacOS_config.h b/extra/Mac_files/MacOS_config.h new file mode 100644 index 0000000..abbf9d8 --- /dev/null +++ b/extra/Mac_files/MacOS_config.h @@ -0,0 +1,27 @@ +/* + MacOS_config.h + + Configuration flags for Macintosh development systems. + + + + 11/16/95 pcb Updated compilation flags to reflect latest 4.6 Makefile. + + by Patrick C. Beard. + */ +/* Boehm, November 17, 1995 12:10 pm PST */ + +#ifdef __MWERKS__ +/* for CodeWarrior Pro with Metrowerks Standard Library (MSL). */ +/* #define MSL_USE_PRECOMPILED_HEADERS 0 */ +#include +#endif /* __MWERKS__ */ + +/* these are defined again in gc_priv.h. */ +#undef TRUE +#undef FALSE + +#define ALL_INTERIOR_POINTERS /* follows interior pointers. */ +/* #define DONT_ADD_BYTE_AT_END */ /* no padding. */ +/* #define SMALL_CONFIG */ /* whether to use a smaller heap. */ +#define USE_TEMPORARY_MEMORY /* use Macintosh temporary memory. */ diff --git a/extra/Mac_files/dataend.c b/extra/Mac_files/dataend.c new file mode 100644 index 0000000..0bed469 --- /dev/null +++ b/extra/Mac_files/dataend.c @@ -0,0 +1,9 @@ +/* + dataend.c + + A hack to get the extent of global data for the Macintosh. + + by Patrick C. Beard. + */ + +long __dataend; diff --git a/extra/Mac_files/datastart.c b/extra/Mac_files/datastart.c new file mode 100644 index 0000000..a1dc6f6 --- /dev/null +++ b/extra/Mac_files/datastart.c @@ -0,0 +1,9 @@ +/* + datastart.c + + A hack to get the extent of global data for the Macintosh. + + by Patrick C. Beard. + */ + +long __datastart; diff --git a/extra/gc.c b/extra/gc.c new file mode 100644 index 0000000..a77fba6 --- /dev/null +++ b/extra/gc.c @@ -0,0 +1,87 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2009 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* This file could be used for the following purposes: */ +/* - get the complete GC as a single link object file (module); */ +/* - enable more compiler optimizations. */ + +/* Tip: to get the highest level of compiler optimizations, the typical */ +/* compiler options (GCC) to use are: */ +/* -O3 -fno-strict-aliasing -march=native -Wall -fprofile-generate/use */ + +/* Warning: GCC for Linux (for C++ clients only): Use -fexceptions both */ +/* for GC and the client otherwise GC_thread_exit_proc() is not */ +/* guaranteed to be invoked (see the comments in pthread_start.c). */ + + +#define GC_INNER STATIC +#define GC_EXTERN GC_INNER + /* STATIC is defined in gcconfig.h. */ + +/* Small files go first... */ +#include "../backgraph.c" +#include "../blacklst.c" +#include "../checksums.c" +#include "../gcj_mlc.c" +#include "../headers.c" +#include "../malloc.c" +#include "../new_hblk.c" +#include "../obj_map.c" +#include "../ptr_chck.c" +#include "../stubborn.c" + +#include "gc_inline.h" +#include "../allchblk.c" +#include "../alloc.c" +#include "../dbg_mlc.c" +#include "../finalize.c" +#include "../fnlz_mlc.c" +#include "../mallocx.c" +#include "../mark.c" +#include "../mark_rts.c" +#include "../reclaim.c" +#include "../typd_mlc.c" + +#include "../misc.c" +#include "../os_dep.c" +#include "../thread_local_alloc.c" + +/* Most platform-specific files go here... */ +#include "../darwin_stop_world.c" +#include "../dyn_load.c" +#include "../gc_dlopen.c" +#include "../mach_dep.c" +#include "../pcr_interface.c" +#include "../pthread_stop_world.c" +#include "../pthread_support.c" +#include "../specific.c" +#include "../win32_threads.c" + +#ifndef GC_PTHREAD_START_STANDALONE +# include "../pthread_start.c" +#endif + +/* Restore pthread calls redirection (if altered in */ +/* pthread_stop_world.c, pthread_support.c or win32_threads.c). */ +/* This is only useful if directly included from application */ +/* (instead of linking gc). */ +#ifndef GC_NO_THREAD_REDIRECTS +# define GC_PTHREAD_REDIRECTS_ONLY +# include "gc_pthread_redirects.h" +#endif + +/* real_malloc.c, extra/MacOS.c, extra/msvc_dbg.c are not included. */ diff --git a/extra/msvc_dbg.c b/extra/msvc_dbg.c new file mode 100644 index 0000000..42aceeb --- /dev/null +++ b/extra/msvc_dbg.c @@ -0,0 +1,385 @@ +/* + Copyright (c) 2004 Andrei Polushin + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ + +#if !defined(_M_AMD64) && defined(_MSC_VER) + +/* X86_64 is currently missing some meachine-dependent code below. */ + +#define GC_BUILD +#include "private/msvc_dbg.h" +#include "gc.h" + +#define WIN32_LEAN_AND_MEAN +#include + +#pragma pack(push, 8) +#include +#pragma pack(pop) + +#pragma comment(lib, "dbghelp.lib") +#pragma optimize("gy", off) + +typedef GC_word word; +#define GC_ULONG_PTR word + +#ifdef _WIN64 + typedef GC_ULONG_PTR ULONG_ADDR; +#else + typedef ULONG ULONG_ADDR; +#endif + +static HANDLE GetSymHandle(void) +{ + static HANDLE symHandle = NULL; + if (!symHandle) { + BOOL bRet = SymInitialize(symHandle = GetCurrentProcess(), NULL, FALSE); + if (bRet) { + DWORD dwOptions = SymGetOptions(); + dwOptions &= ~SYMOPT_UNDNAME; + dwOptions |= SYMOPT_LOAD_LINES; + SymSetOptions(dwOptions); + } + } + return symHandle; +} + +static void* CALLBACK FunctionTableAccess(HANDLE hProcess, + ULONG_ADDR dwAddrBase) +{ + return SymFunctionTableAccess(hProcess, dwAddrBase); +} + +static ULONG_ADDR CALLBACK GetModuleBase(HANDLE hProcess, ULONG_ADDR dwAddress) +{ + MEMORY_BASIC_INFORMATION memoryInfo; + ULONG_ADDR dwAddrBase = SymGetModuleBase(hProcess, dwAddress); + if (dwAddrBase) { + return dwAddrBase; + } + if (VirtualQueryEx(hProcess, (void*)(GC_ULONG_PTR)dwAddress, &memoryInfo, + sizeof(memoryInfo))) { + char filePath[_MAX_PATH]; + char curDir[_MAX_PATH]; + char exePath[_MAX_PATH]; + DWORD size = GetModuleFileNameA((HINSTANCE)memoryInfo.AllocationBase, + filePath, sizeof(filePath)); + + /* Save and restore current directory around SymLoadModule, see KB */ + /* article Q189780. */ + GetCurrentDirectoryA(sizeof(curDir), curDir); + GetModuleFileNameA(NULL, exePath, sizeof(exePath)); +#if defined(_MSC_VER) && _MSC_VER == 1200 + /* use strcat for VC6 */ + strcat(exePath, "\\.."); +#else + strcat_s(exePath, sizeof(exePath), "\\.."); +#endif /* _MSC_VER >= 1200 */ + SetCurrentDirectoryA(exePath); +#ifdef _DEBUG + GetCurrentDirectoryA(sizeof(exePath), exePath); +#endif + SymLoadModule(hProcess, NULL, size ? filePath : NULL, NULL, + (ULONG_ADDR)(GC_ULONG_PTR)memoryInfo.AllocationBase, 0); + SetCurrentDirectoryA(curDir); + } + return (ULONG_ADDR)(GC_ULONG_PTR)memoryInfo.AllocationBase; +} + +static ULONG_ADDR CheckAddress(void* address) +{ + ULONG_ADDR dwAddress = (ULONG_ADDR)(GC_ULONG_PTR)address; + GetModuleBase(GetSymHandle(), dwAddress); + return dwAddress; +} + +size_t GetStackFrames(size_t skip, void* frames[], size_t maxFrames) +{ + HANDLE hProcess = GetSymHandle(); + HANDLE hThread = GetCurrentThread(); + CONTEXT context; + context.ContextFlags = CONTEXT_FULL; + if (!GetThreadContext(hThread, &context)) { + return 0; + } + /* GetThreadContext might return invalid context for the current thread. */ +#if defined(_M_IX86) + __asm mov context.Ebp, ebp +#endif + return GetStackFramesFromContext(hProcess, hThread, &context, skip + 1, + frames, maxFrames); +} + +size_t GetStackFramesFromContext(HANDLE hProcess, HANDLE hThread, + CONTEXT* context, size_t skip, + void* frames[], size_t maxFrames) +{ + size_t frameIndex; + DWORD machineType; + STACKFRAME stackFrame = { 0 }; + stackFrame.AddrPC.Mode = AddrModeFlat; +#if defined(_M_IX86) + machineType = IMAGE_FILE_MACHINE_I386; + stackFrame.AddrPC.Offset = context->Eip; + stackFrame.AddrStack.Mode = AddrModeFlat; + stackFrame.AddrStack.Offset = context->Esp; + stackFrame.AddrFrame.Mode = AddrModeFlat; + stackFrame.AddrFrame.Offset = context->Ebp; +#elif defined(_M_MRX000) + machineType = IMAGE_FILE_MACHINE_R4000; + stackFrame.AddrPC.Offset = context->Fir; +#elif defined(_M_ALPHA) + machineType = IMAGE_FILE_MACHINE_ALPHA; + stackFrame.AddrPC.Offset = (unsigned long)context->Fir; +#elif defined(_M_PPC) + machineType = IMAGE_FILE_MACHINE_POWERPC; + stackFrame.AddrPC.Offset = context->Iar; +#elif defined(_M_IA64) + machineType = IMAGE_FILE_MACHINE_IA64; + stackFrame.AddrPC.Offset = context->StIIP; +#elif defined(_M_ALPHA64) + machineType = IMAGE_FILE_MACHINE_ALPHA64; + stackFrame.AddrPC.Offset = context->Fir; +#elif !defined(CPPCHECK) +# error Unknown CPU +#endif + for (frameIndex = 0; frameIndex < maxFrames; ) { + BOOL bRet = StackWalk(machineType, hProcess, hThread, &stackFrame, + &context, NULL, FunctionTableAccess, GetModuleBase, NULL); + if (!bRet) { + break; + } + if (skip) { + skip--; + } else { + frames[frameIndex++] = (void*)(GC_ULONG_PTR)stackFrame.AddrPC.Offset; + } + } + return frameIndex; +} + +size_t GetModuleNameFromAddress(void* address, char* moduleName, size_t size) +{ + if (size) *moduleName = 0; + { + const char* sourceName; + IMAGEHLP_MODULE moduleInfo = { sizeof (moduleInfo) }; + if (!SymGetModuleInfo(GetSymHandle(), CheckAddress(address), + &moduleInfo)) { + return 0; + } + sourceName = strrchr(moduleInfo.ImageName, '\\'); + if (sourceName) { + sourceName++; + } else { + sourceName = moduleInfo.ImageName; + } + if (size) { + strncpy(moduleName, sourceName, size)[size - 1] = 0; + } + return strlen(sourceName); + } +} + +size_t GetModuleNameFromStack(size_t skip, char* moduleName, size_t size) +{ + void* address = NULL; + GetStackFrames(skip + 1, &address, 1); + if (address) { + return GetModuleNameFromAddress(address, moduleName, size); + } + return 0; +} + +size_t GetSymbolNameFromAddress(void* address, char* symbolName, size_t size, + size_t* offsetBytes) +{ + if (size) *symbolName = 0; + if (offsetBytes) *offsetBytes = 0; + __try { + ULONG_ADDR dwOffset = 0; + union { + IMAGEHLP_SYMBOL sym; + char symNameBuffer[sizeof(IMAGEHLP_SYMBOL) + MAX_SYM_NAME]; + } u; + u.sym.SizeOfStruct = sizeof(u.sym); + u.sym.MaxNameLength = sizeof(u.symNameBuffer) - sizeof(u.sym); + + if (!SymGetSymFromAddr(GetSymHandle(), CheckAddress(address), &dwOffset, + &u.sym)) { + return 0; + } else { + const char* sourceName = u.sym.Name; + char undName[1024]; + if (UnDecorateSymbolName(u.sym.Name, undName, sizeof(undName), + UNDNAME_NO_MS_KEYWORDS | UNDNAME_NO_ACCESS_SPECIFIERS)) { + sourceName = undName; + } else if (SymUnDName(&u.sym, undName, sizeof(undName))) { + sourceName = undName; + } + if (offsetBytes) { + *offsetBytes = dwOffset; + } + if (size) { + strncpy(symbolName, sourceName, size)[size - 1] = 0; + } + return strlen(sourceName); + } + } __except (EXCEPTION_EXECUTE_HANDLER) { + SetLastError(GetExceptionCode()); + } + return 0; +} + +size_t GetSymbolNameFromStack(size_t skip, char* symbolName, size_t size, + size_t* offsetBytes) +{ + void* address = NULL; + GetStackFrames(skip + 1, &address, 1); + if (address) { + return GetSymbolNameFromAddress(address, symbolName, size, offsetBytes); + } + return 0; +} + +size_t GetFileLineFromAddress(void* address, char* fileName, size_t size, + size_t* lineNumber, size_t* offsetBytes) +{ + if (size) *fileName = 0; + if (lineNumber) *lineNumber = 0; + if (offsetBytes) *offsetBytes = 0; + { + char* sourceName; + IMAGEHLP_LINE line = { sizeof (line) }; + GC_ULONG_PTR dwOffset = 0; + if (!SymGetLineFromAddr(GetSymHandle(), CheckAddress(address), &dwOffset, + &line)) { + return 0; + } + if (lineNumber) { + *lineNumber = line.LineNumber; + } + if (offsetBytes) { + *offsetBytes = dwOffset; + } + sourceName = line.FileName; + /* TODO: resolve relative filenames, found in 'source directories' */ + /* registered with MSVC IDE. */ + if (size) { + strncpy(fileName, sourceName, size)[size - 1] = 0; + } + return strlen(sourceName); + } +} + +size_t GetFileLineFromStack(size_t skip, char* fileName, size_t size, + size_t* lineNumber, size_t* offsetBytes) +{ + void* address = NULL; + GetStackFrames(skip + 1, &address, 1); + if (address) { + return GetFileLineFromAddress(address, fileName, size, lineNumber, + offsetBytes); + } + return 0; +} + +size_t GetDescriptionFromAddress(void* address, const char* format, + char* buffer, size_t size) +{ + char*const begin = buffer; + char*const end = buffer + size; + size_t line_number = 0; + + if (size) { + *buffer = 0; + } + buffer += GetFileLineFromAddress(address, buffer, size, &line_number, NULL); + size = (GC_ULONG_PTR)end < (GC_ULONG_PTR)buffer ? 0 : end - buffer; + + if (line_number) { + char str[128]; + + wsprintf(str, "(%d) : ", (int)line_number); + if (size) { + strncpy(buffer, str, size)[size - 1] = 0; + } + buffer += strlen(str); + size = (GC_ULONG_PTR)end < (GC_ULONG_PTR)buffer ? 0 : end - buffer; + } + + if (size) { + strncpy(buffer, "at ", size)[size - 1] = 0; + } + buffer += strlen("at "); + size = (GC_ULONG_PTR)end < (GC_ULONG_PTR)buffer ? 0 : end - buffer; + + buffer += GetSymbolNameFromAddress(address, buffer, size, NULL); + size = (GC_ULONG_PTR)end < (GC_ULONG_PTR)buffer ? 0 : end - buffer; + + if (size) { + strncpy(buffer, " in ", size)[size - 1] = 0; + } + buffer += strlen(" in "); + size = (GC_ULONG_PTR)end < (GC_ULONG_PTR)buffer ? 0 : end - buffer; + + buffer += GetModuleNameFromAddress(address, buffer, size); + return buffer - begin; +} + +size_t GetDescriptionFromStack(void* const frames[], size_t count, + const char* format, char* description[], + size_t size) +{ + char*const begin = (char*)description; + char*const end = begin + size; + char* buffer = begin + (count + 1) * sizeof(char*); + size_t i; + for (i = 0; i < count; ++i) { + if (description) description[i] = buffer; + size = (GC_ULONG_PTR)end < (GC_ULONG_PTR)buffer ? 0 : end - buffer; + buffer += 1 + GetDescriptionFromAddress(frames[i], NULL, buffer, size); + } + if (description) description[count] = NULL; + return buffer - begin; +} + +/* Compatibility with */ + +int backtrace(void* addresses[], int count) +{ + return GetStackFrames(1, addresses, count); +} + +char** backtrace_symbols(void*const* addresses, int count) +{ + size_t size = GetDescriptionFromStack(addresses, count, NULL, NULL, 0); + char** symbols = (char**)malloc(size); + GetDescriptionFromStack(addresses, count, NULL, symbols, size); + return symbols; +} + +#else + + extern int GC_quiet; + /* ANSI C does not allow translation units to be empty. */ + +#endif /* _M_AMD64 */ diff --git a/extra/symbian.cpp b/extra/symbian.cpp new file mode 100644 index 0000000..94dd4de --- /dev/null +++ b/extra/symbian.cpp @@ -0,0 +1,55 @@ + +#include +#include +#include +#include +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +int GC_get_main_symbian_stack_base() + { + TThreadStackInfo aInfo; + TInt err = RThread().StackInfo(aInfo); + if ( !err ) + { + return aInfo.iBase; + } + else + { + return 0; + } + } + +char* GC_get_private_path_and_zero_file() + { + // always on c: drive + RFs fs; + fs.Connect(); + fs.CreatePrivatePath( EDriveC ); + TFileName path; + fs.PrivatePath( path ); + fs.Close(); + _LIT( KCDrive, "c:" ); + path.Insert( 0, KCDrive ); + + + //convert to char*, assume ascii + TBuf8 path8; + path8.Copy( path ); + _LIT8( KZero8, "zero" ); + path8.Append( KZero8 ); + + size_t size = path8.Length() + 1; + char* copyChar = (char*) malloc( size ); + memcpy( copyChar, path8.PtrZ(), size ); + + return copyChar; // ownership passed + } + +#ifdef __cplusplus + } +#endif diff --git a/extra/symbian/global_end.cpp b/extra/symbian/global_end.cpp new file mode 100644 index 0000000..3e2e6d5 --- /dev/null +++ b/extra/symbian/global_end.cpp @@ -0,0 +1,16 @@ +// Symbian-specific file. + +// INCLUDE FILES +#include "private/gcconfig.h" + +#ifdef __cplusplus +extern "C" { +#endif + +int winscw_data_end; + +#ifdef __cplusplus + } +#endif + +// End Of File diff --git a/extra/symbian/global_start.cpp b/extra/symbian/global_start.cpp new file mode 100644 index 0000000..c6d67c3 --- /dev/null +++ b/extra/symbian/global_start.cpp @@ -0,0 +1,16 @@ +// Symbian-specific file. + +// INCLUDE FILES +#include "private/gcconfig.h" + +#ifdef __cplusplus +extern "C" { +#endif + +int winscw_data_start; + +#ifdef __cplusplus + } +#endif + +// End Of File diff --git a/extra/symbian/init_global_static_roots.cpp b/extra/symbian/init_global_static_roots.cpp new file mode 100644 index 0000000..092d341 --- /dev/null +++ b/extra/symbian/init_global_static_roots.cpp @@ -0,0 +1,33 @@ +// Symbian-specific file. + +// INCLUDE FILES +#include + +#include "private/gcconfig.h" +#include "gc.h" + +#ifdef __cplusplus +extern "C" { +#endif + +void GC_init_global_static_roots() +{ + ptr_t dataStart = NULL; + ptr_t dataEnd = NULL; +# if defined (__WINS__) + extern int winscw_data_start, winscw_data_end; + dataStart = ((ptr_t)&winscw_data_start); + dataEnd = ((ptr_t)&winscw_data_end); +# else + extern int Image$$RW$$Limit[], Image$$RW$$Base[]; + dataStart = ((ptr_t)Image$$RW$$Base); + dataEnd = ((ptr_t)Image$$RW$$Limit); +# endif + + GC_add_roots(dataStart, dataEnd); + +} + +#ifdef __cplusplus + } +#endif diff --git a/finalize.c b/finalize.c new file mode 100644 index 0000000..bb607e0 --- /dev/null +++ b/finalize.c @@ -0,0 +1,1337 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1996 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved. + * Copyright (C) 2007 Free Software Foundation, Inc + + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_pmark.h" + +#ifndef GC_NO_FINALIZATION + +/* Type of mark procedure used for marking from finalizable object. */ +/* This procedure normally does not mark the object, only its */ +/* descendants. */ +typedef void (* finalization_mark_proc)(ptr_t /* finalizable_obj_ptr */); + +#define HASH3(addr,size,log_size) \ + ((((word)(addr) >> 3) ^ ((word)(addr) >> (3 + (log_size)))) \ + & ((size) - 1)) +#define HASH2(addr,log_size) HASH3(addr, (word)1 << (log_size), log_size) + +struct hash_chain_entry { + word hidden_key; + struct hash_chain_entry * next; +}; + +struct disappearing_link { + struct hash_chain_entry prolog; +# define dl_hidden_link prolog.hidden_key + /* Field to be cleared. */ +# define dl_next(x) (struct disappearing_link *)((x) -> prolog.next) +# define dl_set_next(x, y) \ + (void)((x)->prolog.next = (struct hash_chain_entry *)(y)) + word dl_hidden_obj; /* Pointer to object base */ +}; + +struct dl_hashtbl_s { + struct disappearing_link **head; + signed_word log_size; + word entries; +}; + +STATIC struct dl_hashtbl_s GC_dl_hashtbl = { + /* head */ NULL, /* log_size */ -1, /* entries */ 0 }; +#ifndef GC_LONG_REFS_NOT_NEEDED + STATIC struct dl_hashtbl_s GC_ll_hashtbl = { NULL, -1, 0 }; +#endif + +struct finalizable_object { + struct hash_chain_entry prolog; +# define fo_hidden_base prolog.hidden_key + /* Pointer to object base. */ + /* No longer hidden once object */ + /* is on finalize_now queue. */ +# define fo_next(x) (struct finalizable_object *)((x) -> prolog.next) +# define fo_set_next(x,y) ((x)->prolog.next = (struct hash_chain_entry *)(y)) + GC_finalization_proc fo_fn; /* Finalizer. */ + ptr_t fo_client_data; + word fo_object_size; /* In bytes. */ + finalization_mark_proc fo_mark_proc; /* Mark-through procedure */ +}; + +static signed_word log_fo_table_size = -1; + +STATIC struct { + struct finalizable_object **fo_head; + /* List of objects that should be finalized now: */ + struct finalizable_object *finalize_now; +} GC_fnlz_roots = { NULL, NULL }; + +GC_API void GC_CALL GC_push_finalizer_structures(void) +{ + GC_ASSERT((word)&GC_dl_hashtbl.head % sizeof(word) == 0); + GC_ASSERT((word)&GC_fnlz_roots % sizeof(word) == 0); +# ifndef GC_LONG_REFS_NOT_NEEDED + GC_ASSERT((word)&GC_ll_hashtbl.head % sizeof(word) == 0); + GC_PUSH_ALL_SYM(GC_ll_hashtbl.head); +# endif + GC_PUSH_ALL_SYM(GC_dl_hashtbl.head); + GC_PUSH_ALL_SYM(GC_fnlz_roots); +} + +/* Double the size of a hash table. *size_ptr is the log of its current */ +/* size. May be a no-op. */ +/* *table is a pointer to an array of hash headers. If we succeed, we */ +/* update both *table and *log_size_ptr. Lock is held. */ +STATIC void GC_grow_table(struct hash_chain_entry ***table, + signed_word *log_size_ptr) +{ + register word i; + register struct hash_chain_entry *p; + signed_word log_old_size = *log_size_ptr; + signed_word log_new_size = log_old_size + 1; + word old_size = log_old_size == -1 ? 0 : (word)1 << log_old_size; + word new_size = (word)1 << log_new_size; + /* FIXME: Power of 2 size often gets rounded up to one more page. */ + struct hash_chain_entry **new_table; + + GC_ASSERT(I_HOLD_LOCK()); + new_table = (struct hash_chain_entry **) + GC_INTERNAL_MALLOC_IGNORE_OFF_PAGE( + (size_t)new_size * sizeof(struct hash_chain_entry *), + NORMAL); + if (new_table == 0) { + if (*table == 0) { + ABORT("Insufficient space for initial table allocation"); + } else { + return; + } + } + for (i = 0; i < old_size; i++) { + p = (*table)[i]; + while (p != 0) { + ptr_t real_key = GC_REVEAL_POINTER(p -> hidden_key); + struct hash_chain_entry *next = p -> next; + size_t new_hash = HASH3(real_key, new_size, log_new_size); + + p -> next = new_table[new_hash]; + new_table[new_hash] = p; + p = next; + } + } + *log_size_ptr = log_new_size; + *table = new_table; +} + +GC_API int GC_CALL GC_register_disappearing_link(void * * link) +{ + ptr_t base; + + base = (ptr_t)GC_base(link); + if (base == 0) + ABORT("Bad arg to GC_register_disappearing_link"); + return(GC_general_register_disappearing_link(link, base)); +} + +STATIC int GC_register_disappearing_link_inner( + struct dl_hashtbl_s *dl_hashtbl, void **link, + const void *obj, const char *tbl_log_name) +{ + struct disappearing_link *curr_dl; + size_t index; + struct disappearing_link * new_dl; + DCL_LOCK_STATE; + + if (EXPECT(GC_find_leak, FALSE)) return GC_UNIMPLEMENTED; + LOCK(); + GC_ASSERT(obj != NULL && GC_base_C(obj) == obj); + if (dl_hashtbl -> log_size == -1 + || dl_hashtbl -> entries > ((word)1 << dl_hashtbl -> log_size)) { + GC_grow_table((struct hash_chain_entry ***)&dl_hashtbl -> head, + &dl_hashtbl -> log_size); +# ifdef LINT2 + if (dl_hashtbl->log_size < 0) ABORT("log_size is negative"); +# endif + GC_COND_LOG_PRINTF("Grew %s table to %u entries\n", tbl_log_name, + 1 << (unsigned)dl_hashtbl -> log_size); + } + index = HASH2(link, dl_hashtbl -> log_size); + for (curr_dl = dl_hashtbl -> head[index]; curr_dl != 0; + curr_dl = dl_next(curr_dl)) { + if (curr_dl -> dl_hidden_link == GC_HIDE_POINTER(link)) { + curr_dl -> dl_hidden_obj = GC_HIDE_POINTER(obj); + UNLOCK(); + return GC_DUPLICATE; + } + } + new_dl = (struct disappearing_link *) + GC_INTERNAL_MALLOC(sizeof(struct disappearing_link),NORMAL); + if (0 == new_dl) { + GC_oom_func oom_fn = GC_oom_fn; + UNLOCK(); + new_dl = (struct disappearing_link *) + (*oom_fn)(sizeof(struct disappearing_link)); + if (0 == new_dl) { + return GC_NO_MEMORY; + } + /* It's not likely we'll make it here, but ... */ + LOCK(); + /* Recalculate index since the table may grow. */ + index = HASH2(link, dl_hashtbl -> log_size); + /* Check again that our disappearing link not in the table. */ + for (curr_dl = dl_hashtbl -> head[index]; curr_dl != 0; + curr_dl = dl_next(curr_dl)) { + if (curr_dl -> dl_hidden_link == GC_HIDE_POINTER(link)) { + curr_dl -> dl_hidden_obj = GC_HIDE_POINTER(obj); + UNLOCK(); +# ifndef DBG_HDRS_ALL + /* Free unused new_dl returned by GC_oom_fn() */ + GC_free((void *)new_dl); +# endif + return GC_DUPLICATE; + } + } + } + new_dl -> dl_hidden_obj = GC_HIDE_POINTER(obj); + new_dl -> dl_hidden_link = GC_HIDE_POINTER(link); + dl_set_next(new_dl, dl_hashtbl -> head[index]); + dl_hashtbl -> head[index] = new_dl; + dl_hashtbl -> entries++; + UNLOCK(); + return GC_SUCCESS; +} + +GC_API int GC_CALL GC_general_register_disappearing_link(void * * link, + const void * obj) +{ + if (((word)link & (ALIGNMENT-1)) != 0 || !NONNULL_ARG_NOT_NULL(link)) + ABORT("Bad arg to GC_general_register_disappearing_link"); + return GC_register_disappearing_link_inner(&GC_dl_hashtbl, link, obj, + "dl"); +} + +#ifdef DBG_HDRS_ALL +# define FREE_DL_ENTRY(curr_dl) dl_set_next(curr_dl, NULL) +#else +# define FREE_DL_ENTRY(curr_dl) GC_free(curr_dl) +#endif + +/* Unregisters given link and returns the link entry to free. */ +/* Assume the lock is held. */ +GC_INLINE struct disappearing_link *GC_unregister_disappearing_link_inner( + struct dl_hashtbl_s *dl_hashtbl, void **link) +{ + struct disappearing_link *curr_dl; + struct disappearing_link *prev_dl = NULL; + size_t index; + + if (dl_hashtbl->log_size == -1) + return NULL; /* prevent integer shift by a negative amount */ + + index = HASH2(link, dl_hashtbl->log_size); + for (curr_dl = dl_hashtbl -> head[index]; curr_dl; + curr_dl = dl_next(curr_dl)) { + if (curr_dl -> dl_hidden_link == GC_HIDE_POINTER(link)) { + /* Remove found entry from the table. */ + if (NULL == prev_dl) { + dl_hashtbl -> head[index] = dl_next(curr_dl); + } else { + dl_set_next(prev_dl, dl_next(curr_dl)); + } + dl_hashtbl -> entries--; + break; + } + prev_dl = curr_dl; + } + return curr_dl; +} + +GC_API int GC_CALL GC_unregister_disappearing_link(void * * link) +{ + struct disappearing_link *curr_dl; + DCL_LOCK_STATE; + + if (((word)link & (ALIGNMENT-1)) != 0) return(0); /* Nothing to do. */ + + LOCK(); + curr_dl = GC_unregister_disappearing_link_inner(&GC_dl_hashtbl, link); + UNLOCK(); + if (NULL == curr_dl) return 0; + FREE_DL_ENTRY(curr_dl); + return 1; +} + +/* Toggle-ref support. */ +#ifndef GC_TOGGLE_REFS_NOT_NEEDED + typedef union { + /* Lowest bit is used to distinguish between choices. */ + void *strong_ref; + GC_hidden_pointer weak_ref; + } GCToggleRef; + + STATIC GC_toggleref_func GC_toggleref_callback = 0; + STATIC GCToggleRef *GC_toggleref_arr = NULL; + STATIC int GC_toggleref_array_size = 0; + STATIC int GC_toggleref_array_capacity = 0; + + GC_INNER void GC_process_togglerefs(void) + { + int i; + int new_size = 0; + + GC_ASSERT(I_HOLD_LOCK()); + for (i = 0; i < GC_toggleref_array_size; ++i) { + GCToggleRef r = GC_toggleref_arr[i]; + void *obj = r.strong_ref; + + if (((word)obj & 1) != 0) { + obj = GC_REVEAL_POINTER(r.weak_ref); + } + if (NULL == obj) { + continue; + } + switch (GC_toggleref_callback(obj)) { + case GC_TOGGLE_REF_DROP: + break; + case GC_TOGGLE_REF_STRONG: + GC_toggleref_arr[new_size++].strong_ref = obj; + break; + case GC_TOGGLE_REF_WEAK: + GC_toggleref_arr[new_size++].weak_ref = GC_HIDE_POINTER(obj); + break; + default: + ABORT("Bad toggle-ref status returned by callback"); + } + } + + if (new_size < GC_toggleref_array_size) { + BZERO(&GC_toggleref_arr[new_size], + (GC_toggleref_array_size - new_size) * sizeof(GCToggleRef)); + GC_toggleref_array_size = new_size; + } + } + + STATIC void GC_normal_finalize_mark_proc(ptr_t); + + static void push_and_mark_object(void *p) + { + GC_normal_finalize_mark_proc(p); + while (!GC_mark_stack_empty()) { + MARK_FROM_MARK_STACK(); + } + GC_set_mark_bit(p); + if (GC_mark_state != MS_NONE) { + while (!GC_mark_some(0)) { + /* Empty. */ + } + } + } + + STATIC void GC_mark_togglerefs(void) + { + int i; + if (NULL == GC_toggleref_arr) + return; + + /* TODO: Hide GC_toggleref_arr to avoid its marking from roots. */ + GC_set_mark_bit(GC_toggleref_arr); + for (i = 0; i < GC_toggleref_array_size; ++i) { + void *obj = GC_toggleref_arr[i].strong_ref; + if (obj != NULL && ((word)obj & 1) == 0) { + push_and_mark_object(obj); + } + } + } + + STATIC void GC_clear_togglerefs(void) + { + int i; + for (i = 0; i < GC_toggleref_array_size; ++i) { + if ((GC_toggleref_arr[i].weak_ref & 1) != 0) { + if (!GC_is_marked(GC_REVEAL_POINTER(GC_toggleref_arr[i].weak_ref))) { + GC_toggleref_arr[i].weak_ref = 0; + } else { + /* No need to copy, BDWGC is a non-moving collector. */ + } + } + } + } + + GC_API void GC_CALL GC_set_toggleref_func(GC_toggleref_func fn) + { + DCL_LOCK_STATE; + + LOCK(); + GC_toggleref_callback = fn; + UNLOCK(); + } + + GC_API GC_toggleref_func GC_CALL GC_get_toggleref_func(void) + { + GC_toggleref_func fn; + DCL_LOCK_STATE; + + LOCK(); + fn = GC_toggleref_callback; + UNLOCK(); + return fn; + } + + static GC_bool ensure_toggleref_capacity(int capacity_inc) + { + GC_ASSERT(capacity_inc >= 0); + if (NULL == GC_toggleref_arr) { + GC_toggleref_array_capacity = 32; /* initial capacity */ + GC_toggleref_arr = GC_INTERNAL_MALLOC_IGNORE_OFF_PAGE( + GC_toggleref_array_capacity * sizeof(GCToggleRef), + NORMAL); + if (NULL == GC_toggleref_arr) + return FALSE; + } + if ((unsigned)GC_toggleref_array_size + (unsigned)capacity_inc + >= (unsigned)GC_toggleref_array_capacity) { + GCToggleRef *new_array; + while ((unsigned)GC_toggleref_array_capacity + < (unsigned)GC_toggleref_array_size + (unsigned)capacity_inc) { + GC_toggleref_array_capacity *= 2; + if (GC_toggleref_array_capacity < 0) /* overflow */ + return FALSE; + } + + new_array = GC_INTERNAL_MALLOC_IGNORE_OFF_PAGE( + GC_toggleref_array_capacity * sizeof(GCToggleRef), + NORMAL); + if (NULL == new_array) + return FALSE; + BCOPY(GC_toggleref_arr, new_array, + GC_toggleref_array_size * sizeof(GCToggleRef)); + GC_INTERNAL_FREE(GC_toggleref_arr); + GC_toggleref_arr = new_array; + } + return TRUE; + } + + GC_API int GC_CALL GC_toggleref_add(void *obj, int is_strong_ref) + { + int res = GC_SUCCESS; + DCL_LOCK_STATE; + + GC_ASSERT(NONNULL_ARG_NOT_NULL(obj)); + LOCK(); + if (GC_toggleref_callback != 0) { + if (!ensure_toggleref_capacity(1)) { + res = GC_NO_MEMORY; + } else { + GC_toggleref_arr[GC_toggleref_array_size++].strong_ref = + is_strong_ref ? obj : (void *)GC_HIDE_POINTER(obj); + } + } + UNLOCK(); + return res; + } +#endif /* !GC_TOGGLE_REFS_NOT_NEEDED */ + +/* Finalizer callback support. */ +STATIC GC_await_finalize_proc GC_object_finalized_proc = 0; + +GC_API void GC_CALL GC_set_await_finalize_proc(GC_await_finalize_proc fn) +{ + DCL_LOCK_STATE; + + LOCK(); + GC_object_finalized_proc = fn; + UNLOCK(); +} + +GC_API GC_await_finalize_proc GC_CALL GC_get_await_finalize_proc(void) +{ + GC_await_finalize_proc fn; + DCL_LOCK_STATE; + + LOCK(); + fn = GC_object_finalized_proc; + UNLOCK(); + return fn; +} + +#ifndef GC_LONG_REFS_NOT_NEEDED + GC_API int GC_CALL GC_register_long_link(void * * link, const void * obj) + { + if (((word)link & (ALIGNMENT-1)) != 0 || !NONNULL_ARG_NOT_NULL(link)) + ABORT("Bad arg to GC_register_long_link"); + return GC_register_disappearing_link_inner(&GC_ll_hashtbl, link, obj, + "long dl"); + } + + GC_API int GC_CALL GC_unregister_long_link(void * * link) + { + struct disappearing_link *curr_dl; + DCL_LOCK_STATE; + + if (((word)link & (ALIGNMENT-1)) != 0) return(0); /* Nothing to do. */ + + LOCK(); + curr_dl = GC_unregister_disappearing_link_inner(&GC_ll_hashtbl, link); + UNLOCK(); + if (NULL == curr_dl) return 0; + FREE_DL_ENTRY(curr_dl); + return 1; + } +#endif /* !GC_LONG_REFS_NOT_NEEDED */ + +#ifndef GC_MOVE_DISAPPEARING_LINK_NOT_NEEDED + /* Moves a link. Assume the lock is held. */ + STATIC int GC_move_disappearing_link_inner( + struct dl_hashtbl_s *dl_hashtbl, + void **link, void **new_link) + { + struct disappearing_link *curr_dl, *prev_dl, *new_dl; + size_t curr_index, new_index; + word curr_hidden_link; + word new_hidden_link; + + if (dl_hashtbl->log_size == -1) + return GC_NOT_FOUND; /* prevent integer shift by a negative amount */ + + /* Find current link. */ + curr_index = HASH2(link, dl_hashtbl -> log_size); + curr_hidden_link = GC_HIDE_POINTER(link); + prev_dl = NULL; + for (curr_dl = dl_hashtbl -> head[curr_index]; curr_dl; + curr_dl = dl_next(curr_dl)) { + if (curr_dl -> dl_hidden_link == curr_hidden_link) + break; + prev_dl = curr_dl; + } + + if (NULL == curr_dl) { + return GC_NOT_FOUND; + } + + if (link == new_link) { + return GC_SUCCESS; /* Nothing to do. */ + } + + /* link found; now check new_link not present. */ + new_index = HASH2(new_link, dl_hashtbl -> log_size); + new_hidden_link = GC_HIDE_POINTER(new_link); + for (new_dl = dl_hashtbl -> head[new_index]; new_dl; + new_dl = dl_next(new_dl)) { + if (new_dl -> dl_hidden_link == new_hidden_link) { + /* Target already registered; bail. */ + return GC_DUPLICATE; + } + } + + /* Remove from old, add to new, update link. */ + if (NULL == prev_dl) { + dl_hashtbl -> head[curr_index] = dl_next(curr_dl); + } else { + dl_set_next(prev_dl, dl_next(curr_dl)); + } + curr_dl -> dl_hidden_link = new_hidden_link; + dl_set_next(curr_dl, dl_hashtbl -> head[new_index]); + dl_hashtbl -> head[new_index] = curr_dl; + return GC_SUCCESS; + } + + GC_API int GC_CALL GC_move_disappearing_link(void **link, void **new_link) + { + int result; + DCL_LOCK_STATE; + + if (((word)new_link & (ALIGNMENT-1)) != 0 + || !NONNULL_ARG_NOT_NULL(new_link)) + ABORT("Bad new_link arg to GC_move_disappearing_link"); + if (((word)link & (ALIGNMENT-1)) != 0) + return GC_NOT_FOUND; /* Nothing to do. */ + + LOCK(); + result = GC_move_disappearing_link_inner(&GC_dl_hashtbl, link, new_link); + UNLOCK(); + return result; + } + +# ifndef GC_LONG_REFS_NOT_NEEDED + GC_API int GC_CALL GC_move_long_link(void **link, void **new_link) + { + int result; + DCL_LOCK_STATE; + + if (((word)new_link & (ALIGNMENT-1)) != 0 + || !NONNULL_ARG_NOT_NULL(new_link)) + ABORT("Bad new_link arg to GC_move_long_link"); + if (((word)link & (ALIGNMENT-1)) != 0) + return GC_NOT_FOUND; /* Nothing to do. */ + + LOCK(); + result = GC_move_disappearing_link_inner(&GC_ll_hashtbl, link, new_link); + UNLOCK(); + return result; + } +# endif /* !GC_LONG_REFS_NOT_NEEDED */ +#endif /* !GC_MOVE_DISAPPEARING_LINK_NOT_NEEDED */ + +/* Possible finalization_marker procedures. Note that mark stack */ +/* overflow is handled by the caller, and is not a disaster. */ +STATIC void GC_normal_finalize_mark_proc(ptr_t p) +{ + hdr * hhdr = HDR(p); + + PUSH_OBJ(p, hhdr, GC_mark_stack_top, + &(GC_mark_stack[GC_mark_stack_size])); +} + +/* This only pays very partial attention to the mark descriptor. */ +/* It does the right thing for normal and atomic objects, and treats */ +/* most others as normal. */ +STATIC void GC_ignore_self_finalize_mark_proc(ptr_t p) +{ + hdr * hhdr = HDR(p); + word descr = hhdr -> hb_descr; + ptr_t q; + ptr_t scan_limit; + ptr_t target_limit = p + hhdr -> hb_sz - 1; + + if ((descr & GC_DS_TAGS) == GC_DS_LENGTH) { + scan_limit = p + descr - sizeof(word); + } else { + scan_limit = target_limit + 1 - sizeof(word); + } + for (q = p; (word)q <= (word)scan_limit; q += ALIGNMENT) { + word r = *(word *)q; + + if (r < (word)p || r > (word)target_limit) { + GC_PUSH_ONE_HEAP(r, q, GC_mark_stack_top); + } + } +} + +STATIC void GC_null_finalize_mark_proc(ptr_t p GC_ATTR_UNUSED) {} + +/* Possible finalization_marker procedures. Note that mark stack */ +/* overflow is handled by the caller, and is not a disaster. */ + +/* GC_unreachable_finalize_mark_proc is an alias for normal marking, */ +/* but it is explicitly tested for, and triggers different */ +/* behavior. Objects registered in this way are not finalized */ +/* if they are reachable by other finalizable objects, even if those */ +/* other objects specify no ordering. */ +STATIC void GC_unreachable_finalize_mark_proc(ptr_t p) +{ + GC_normal_finalize_mark_proc(p); +} + +/* Register a finalization function. See gc.h for details. */ +/* The last parameter is a procedure that determines */ +/* marking for finalization ordering. Any objects marked */ +/* by that procedure will be guaranteed to not have been */ +/* finalized when this finalizer is invoked. */ +STATIC void GC_register_finalizer_inner(void * obj, + GC_finalization_proc fn, void *cd, + GC_finalization_proc *ofn, void **ocd, + finalization_mark_proc mp) +{ + struct finalizable_object * curr_fo; + size_t index; + struct finalizable_object *new_fo = 0; + hdr *hhdr = NULL; /* initialized to prevent warning. */ + DCL_LOCK_STATE; + + if (EXPECT(GC_find_leak, FALSE)) return; + LOCK(); + if (log_fo_table_size == -1 + || GC_fo_entries > ((word)1 << log_fo_table_size)) { + GC_grow_table((struct hash_chain_entry ***)&GC_fnlz_roots.fo_head, + &log_fo_table_size); +# ifdef LINT2 + if (log_fo_table_size < 0) ABORT("log_size is negative"); +# endif + GC_COND_LOG_PRINTF("Grew fo table to %u entries\n", + 1 << (unsigned)log_fo_table_size); + } + /* in the THREADS case we hold allocation lock. */ + for (;;) { + struct finalizable_object *prev_fo = NULL; + GC_oom_func oom_fn; + + index = HASH2(obj, log_fo_table_size); + curr_fo = GC_fnlz_roots.fo_head[index]; + while (curr_fo != 0) { + GC_ASSERT(GC_size(curr_fo) >= sizeof(struct finalizable_object)); + if (curr_fo -> fo_hidden_base == GC_HIDE_POINTER(obj)) { + /* Interruption by a signal in the middle of this */ + /* should be safe. The client may see only *ocd */ + /* updated, but we'll declare that to be his problem. */ + if (ocd) *ocd = (void *) (curr_fo -> fo_client_data); + if (ofn) *ofn = curr_fo -> fo_fn; + /* Delete the structure for obj. */ + if (prev_fo == 0) { + GC_fnlz_roots.fo_head[index] = fo_next(curr_fo); + } else { + fo_set_next(prev_fo, fo_next(curr_fo)); + } + if (fn == 0) { + GC_fo_entries--; + /* May not happen if we get a signal. But a high */ + /* estimate will only make the table larger than */ + /* necessary. */ +# if !defined(THREADS) && !defined(DBG_HDRS_ALL) + GC_free((void *)curr_fo); +# endif + } else { + curr_fo -> fo_fn = fn; + curr_fo -> fo_client_data = (ptr_t)cd; + curr_fo -> fo_mark_proc = mp; + /* Reinsert it. We deleted it first to maintain */ + /* consistency in the event of a signal. */ + if (prev_fo == 0) { + GC_fnlz_roots.fo_head[index] = curr_fo; + } else { + fo_set_next(prev_fo, curr_fo); + } + } + UNLOCK(); +# ifndef DBG_HDRS_ALL + if (EXPECT(new_fo != 0, FALSE)) { + /* Free unused new_fo returned by GC_oom_fn() */ + GC_free((void *)new_fo); + } +# endif + return; + } + prev_fo = curr_fo; + curr_fo = fo_next(curr_fo); + } + if (EXPECT(new_fo != 0, FALSE)) { + /* new_fo is returned by GC_oom_fn(). */ + GC_ASSERT(fn != 0); +# ifdef LINT2 + if (NULL == hhdr) ABORT("Bad hhdr in GC_register_finalizer_inner"); +# endif + break; + } + if (fn == 0) { + if (ocd) *ocd = 0; + if (ofn) *ofn = 0; + UNLOCK(); + return; + } + GET_HDR(obj, hhdr); + if (EXPECT(0 == hhdr, FALSE)) { + /* We won't collect it, hence finalizer wouldn't be run. */ + if (ocd) *ocd = 0; + if (ofn) *ofn = 0; + UNLOCK(); + return; + } + new_fo = (struct finalizable_object *) + GC_INTERNAL_MALLOC(sizeof(struct finalizable_object),NORMAL); + if (EXPECT(new_fo != 0, TRUE)) + break; + oom_fn = GC_oom_fn; + UNLOCK(); + new_fo = (struct finalizable_object *) + (*oom_fn)(sizeof(struct finalizable_object)); + if (0 == new_fo) { + /* No enough memory. *ocd and *ofn remains unchanged. */ + return; + } + /* It's not likely we'll make it here, but ... */ + LOCK(); + /* Recalculate index since the table may grow and */ + /* check again that our finalizer is not in the table. */ + } + GC_ASSERT(GC_size(new_fo) >= sizeof(struct finalizable_object)); + if (ocd) *ocd = 0; + if (ofn) *ofn = 0; + new_fo -> fo_hidden_base = GC_HIDE_POINTER(obj); + new_fo -> fo_fn = fn; + new_fo -> fo_client_data = (ptr_t)cd; + new_fo -> fo_object_size = hhdr -> hb_sz; + new_fo -> fo_mark_proc = mp; + fo_set_next(new_fo, GC_fnlz_roots.fo_head[index]); + GC_fo_entries++; + GC_fnlz_roots.fo_head[index] = new_fo; + UNLOCK(); +} + +GC_API void GC_CALL GC_register_finalizer(void * obj, + GC_finalization_proc fn, void * cd, + GC_finalization_proc *ofn, void ** ocd) +{ + GC_register_finalizer_inner(obj, fn, cd, ofn, + ocd, GC_normal_finalize_mark_proc); +} + +GC_API void GC_CALL GC_register_finalizer_ignore_self(void * obj, + GC_finalization_proc fn, void * cd, + GC_finalization_proc *ofn, void ** ocd) +{ + GC_register_finalizer_inner(obj, fn, cd, ofn, + ocd, GC_ignore_self_finalize_mark_proc); +} + +GC_API void GC_CALL GC_register_finalizer_no_order(void * obj, + GC_finalization_proc fn, void * cd, + GC_finalization_proc *ofn, void ** ocd) +{ + GC_register_finalizer_inner(obj, fn, cd, ofn, + ocd, GC_null_finalize_mark_proc); +} + +static GC_bool need_unreachable_finalization = FALSE; + /* Avoid the work if this isn't used. */ + +GC_API void GC_CALL GC_register_finalizer_unreachable(void * obj, + GC_finalization_proc fn, void * cd, + GC_finalization_proc *ofn, void ** ocd) +{ + need_unreachable_finalization = TRUE; + GC_ASSERT(GC_java_finalization); + GC_register_finalizer_inner(obj, fn, cd, ofn, + ocd, GC_unreachable_finalize_mark_proc); +} + +#ifndef NO_DEBUGGING + STATIC void GC_dump_finalization_links( + const struct dl_hashtbl_s *dl_hashtbl) + { + size_t dl_size = dl_hashtbl->log_size == -1 ? 0 : + (size_t)1 << dl_hashtbl->log_size; + size_t i; + + for (i = 0; i < dl_size; i++) { + struct disappearing_link *curr_dl; + + for (curr_dl = dl_hashtbl -> head[i]; curr_dl != 0; + curr_dl = dl_next(curr_dl)) { + ptr_t real_ptr = GC_REVEAL_POINTER(curr_dl -> dl_hidden_obj); + ptr_t real_link = GC_REVEAL_POINTER(curr_dl -> dl_hidden_link); + + GC_printf("Object: %p, link: %p\n", + (void *)real_ptr, (void *)real_link); + } + } + } + + GC_API void GC_CALL GC_dump_finalization(void) + { + struct finalizable_object * curr_fo; + size_t fo_size = log_fo_table_size == -1 ? 0 : + (size_t)1 << log_fo_table_size; + size_t i; + + GC_printf("Disappearing (short) links:\n"); + GC_dump_finalization_links(&GC_dl_hashtbl); +# ifndef GC_LONG_REFS_NOT_NEEDED + GC_printf("Disappearing long links:\n"); + GC_dump_finalization_links(&GC_ll_hashtbl); +# endif + GC_printf("Finalizers:\n"); + for (i = 0; i < fo_size; i++) { + for (curr_fo = GC_fnlz_roots.fo_head[i]; + curr_fo != NULL; curr_fo = fo_next(curr_fo)) { + ptr_t real_ptr = GC_REVEAL_POINTER(curr_fo -> fo_hidden_base); + + GC_printf("Finalizable object: %p\n", (void *)real_ptr); + } + } + } +#endif /* !NO_DEBUGGING */ + +#ifndef SMALL_CONFIG + STATIC word GC_old_dl_entries = 0; /* for stats printing */ +# ifndef GC_LONG_REFS_NOT_NEEDED + STATIC word GC_old_ll_entries = 0; +# endif +#endif /* !SMALL_CONFIG */ + +#ifndef THREADS + /* Global variables to minimize the level of recursion when a client */ + /* finalizer allocates memory. */ + STATIC int GC_finalizer_nested = 0; + /* Only the lowest byte is used, the rest is */ + /* padding for proper global data alignment */ + /* required for some compilers (like Watcom). */ + STATIC unsigned GC_finalizer_skipped = 0; + + /* Checks and updates the level of finalizers recursion. */ + /* Returns NULL if GC_invoke_finalizers() should not be called by the */ + /* collector (to minimize the risk of a deep finalizers recursion), */ + /* otherwise returns a pointer to GC_finalizer_nested. */ + STATIC unsigned char *GC_check_finalizer_nested(void) + { + unsigned nesting_level = *(unsigned char *)&GC_finalizer_nested; + if (nesting_level) { + /* We are inside another GC_invoke_finalizers(). */ + /* Skip some implicitly-called GC_invoke_finalizers() */ + /* depending on the nesting (recursion) level. */ + if (++GC_finalizer_skipped < (1U << nesting_level)) return NULL; + GC_finalizer_skipped = 0; + } + *(char *)&GC_finalizer_nested = (char)(nesting_level + 1); + return (unsigned char *)&GC_finalizer_nested; + } +#endif /* THREADS */ + +#define ITERATE_DL_HASHTBL_BEGIN(dl_hashtbl, curr_dl, prev_dl) \ + { \ + size_t i; \ + size_t dl_size = dl_hashtbl->log_size == -1 ? 0 : \ + (size_t)1 << dl_hashtbl->log_size; \ + for (i = 0; i < dl_size; i++) { \ + struct disappearing_link *prev_dl = NULL; \ + curr_dl = dl_hashtbl -> head[i]; \ + while (curr_dl) { + +#define ITERATE_DL_HASHTBL_END(curr_dl, prev_dl) \ + prev_dl = curr_dl; \ + curr_dl = dl_next(curr_dl); \ + } \ + } \ + } + +#define DELETE_DL_HASHTBL_ENTRY(dl_hashtbl, curr_dl, prev_dl, next_dl) \ + { \ + next_dl = dl_next(curr_dl); \ + if (NULL == prev_dl) { \ + dl_hashtbl -> head[i] = next_dl; \ + } else { \ + dl_set_next(prev_dl, next_dl); \ + } \ + GC_clear_mark_bit(curr_dl); \ + dl_hashtbl -> entries--; \ + curr_dl = next_dl; \ + continue; \ + } + +GC_INLINE void GC_make_disappearing_links_disappear( + struct dl_hashtbl_s* dl_hashtbl) +{ + struct disappearing_link *curr, *next; + + ITERATE_DL_HASHTBL_BEGIN(dl_hashtbl, curr, prev) + ptr_t real_ptr = GC_REVEAL_POINTER(curr -> dl_hidden_obj); + ptr_t real_link = GC_REVEAL_POINTER(curr -> dl_hidden_link); + + if (!GC_is_marked(real_ptr)) { + *(word *)real_link = 0; + GC_clear_mark_bit(curr); + DELETE_DL_HASHTBL_ENTRY(dl_hashtbl, curr, prev, next); + } + ITERATE_DL_HASHTBL_END(curr, prev) +} + +GC_INLINE void GC_remove_dangling_disappearing_links( + struct dl_hashtbl_s* dl_hashtbl) +{ + struct disappearing_link *curr, *next; + + ITERATE_DL_HASHTBL_BEGIN(dl_hashtbl, curr, prev) + ptr_t real_link = GC_base(GC_REVEAL_POINTER(curr -> dl_hidden_link)); + + if (NULL != real_link && !GC_is_marked(real_link)) { + GC_clear_mark_bit(curr); + DELETE_DL_HASHTBL_ENTRY(dl_hashtbl, curr, prev, next); + } + ITERATE_DL_HASHTBL_END(curr, prev) +} + +/* Called with held lock (but the world is running). */ +/* Cause disappearing links to disappear and unreachable objects to be */ +/* enqueued for finalization. */ +GC_INNER void GC_finalize(void) +{ + struct finalizable_object * curr_fo, * prev_fo, * next_fo; + ptr_t real_ptr; + size_t i; + size_t fo_size = log_fo_table_size == -1 ? 0 : + (size_t)1 << log_fo_table_size; + +# ifndef SMALL_CONFIG + /* Save current GC_[dl/ll]_entries value for stats printing */ + GC_old_dl_entries = GC_dl_hashtbl.entries; +# ifndef GC_LONG_REFS_NOT_NEEDED + GC_old_ll_entries = GC_ll_hashtbl.entries; +# endif +# endif + +# ifndef GC_TOGGLE_REFS_NOT_NEEDED + GC_mark_togglerefs(); +# endif + GC_make_disappearing_links_disappear(&GC_dl_hashtbl); + + /* Mark all objects reachable via chains of 1 or more pointers */ + /* from finalizable objects. */ + GC_ASSERT(GC_mark_state == MS_NONE); + for (i = 0; i < fo_size; i++) { + for (curr_fo = GC_fnlz_roots.fo_head[i]; + curr_fo != NULL; curr_fo = fo_next(curr_fo)) { + GC_ASSERT(GC_size(curr_fo) >= sizeof(struct finalizable_object)); + real_ptr = GC_REVEAL_POINTER(curr_fo -> fo_hidden_base); + if (!GC_is_marked(real_ptr)) { + GC_MARKED_FOR_FINALIZATION(real_ptr); + GC_MARK_FO(real_ptr, curr_fo -> fo_mark_proc); + if (GC_is_marked(real_ptr)) { + WARN("Finalization cycle involving %p\n", real_ptr); + } + } + } + } + /* Enqueue for finalization all objects that are still */ + /* unreachable. */ + GC_bytes_finalized = 0; + for (i = 0; i < fo_size; i++) { + curr_fo = GC_fnlz_roots.fo_head[i]; + prev_fo = 0; + while (curr_fo != 0) { + real_ptr = GC_REVEAL_POINTER(curr_fo -> fo_hidden_base); + if (!GC_is_marked(real_ptr)) { + if (!GC_java_finalization) { + GC_set_mark_bit(real_ptr); + } + /* Delete from hash table */ + next_fo = fo_next(curr_fo); + if (NULL == prev_fo) { + GC_fnlz_roots.fo_head[i] = next_fo; + } else { + fo_set_next(prev_fo, next_fo); + } + GC_fo_entries--; + if (GC_object_finalized_proc) + GC_object_finalized_proc(real_ptr); + + /* Add to list of objects awaiting finalization. */ + fo_set_next(curr_fo, GC_fnlz_roots.finalize_now); + GC_fnlz_roots.finalize_now = curr_fo; + /* unhide object pointer so any future collections will */ + /* see it. */ + curr_fo -> fo_hidden_base = + (word)GC_REVEAL_POINTER(curr_fo -> fo_hidden_base); + GC_bytes_finalized += + curr_fo -> fo_object_size + + sizeof(struct finalizable_object); + GC_ASSERT(GC_is_marked(GC_base(curr_fo))); + curr_fo = next_fo; + } else { + prev_fo = curr_fo; + curr_fo = fo_next(curr_fo); + } + } + } + + if (GC_java_finalization) { + /* make sure we mark everything reachable from objects finalized + using the no_order mark_proc */ + for (curr_fo = GC_fnlz_roots.finalize_now; + curr_fo != NULL; curr_fo = fo_next(curr_fo)) { + real_ptr = (ptr_t)curr_fo -> fo_hidden_base; + if (!GC_is_marked(real_ptr)) { + if (curr_fo -> fo_mark_proc == GC_null_finalize_mark_proc) { + GC_MARK_FO(real_ptr, GC_normal_finalize_mark_proc); + } + if (curr_fo -> fo_mark_proc != GC_unreachable_finalize_mark_proc) { + GC_set_mark_bit(real_ptr); + } + } + } + + /* now revive finalize-when-unreachable objects reachable from + other finalizable objects */ + if (need_unreachable_finalization) { + curr_fo = GC_fnlz_roots.finalize_now; +# if defined(GC_ASSERTIONS) || defined(LINT2) + if (curr_fo != NULL && log_fo_table_size < 0) + ABORT("log_size is negative"); +# endif + prev_fo = NULL; + while (curr_fo != NULL) { + next_fo = fo_next(curr_fo); + if (curr_fo -> fo_mark_proc == GC_unreachable_finalize_mark_proc) { + real_ptr = (ptr_t)curr_fo -> fo_hidden_base; + if (!GC_is_marked(real_ptr)) { + GC_set_mark_bit(real_ptr); + } else { + if (NULL == prev_fo) { + GC_fnlz_roots.finalize_now = next_fo; + } else { + fo_set_next(prev_fo, next_fo); + } + curr_fo -> fo_hidden_base = + GC_HIDE_POINTER(curr_fo -> fo_hidden_base); + GC_bytes_finalized -= + curr_fo->fo_object_size + sizeof(struct finalizable_object); + + i = HASH2(real_ptr, log_fo_table_size); + fo_set_next(curr_fo, GC_fnlz_roots.fo_head[i]); + GC_fo_entries++; + GC_fnlz_roots.fo_head[i] = curr_fo; + curr_fo = prev_fo; + } + } + prev_fo = curr_fo; + curr_fo = next_fo; + } + } + } + + GC_remove_dangling_disappearing_links(&GC_dl_hashtbl); +# ifndef GC_TOGGLE_REFS_NOT_NEEDED + GC_clear_togglerefs(); +# endif +# ifndef GC_LONG_REFS_NOT_NEEDED + GC_make_disappearing_links_disappear(&GC_ll_hashtbl); + GC_remove_dangling_disappearing_links(&GC_ll_hashtbl); +# endif + + if (GC_fail_count) { + /* Don't prevent running finalizers if there has been an allocation */ + /* failure recently. */ +# ifdef THREADS + GC_reset_finalizer_nested(); +# else + GC_finalizer_nested = 0; +# endif + } +} + +#ifndef JAVA_FINALIZATION_NOT_NEEDED + + /* Enqueue all remaining finalizers to be run - Assumes lock is held. */ + STATIC void GC_enqueue_all_finalizers(void) + { + struct finalizable_object * curr_fo, * next_fo; + ptr_t real_ptr; + int i; + int fo_size; + + fo_size = log_fo_table_size == -1 ? 0 : 1 << log_fo_table_size; + GC_bytes_finalized = 0; + for (i = 0; i < fo_size; i++) { + curr_fo = GC_fnlz_roots.fo_head[i]; + GC_fnlz_roots.fo_head[i] = NULL; + while (curr_fo != NULL) { + real_ptr = GC_REVEAL_POINTER(curr_fo -> fo_hidden_base); + GC_MARK_FO(real_ptr, GC_normal_finalize_mark_proc); + GC_set_mark_bit(real_ptr); + + next_fo = fo_next(curr_fo); + + /* Add to list of objects awaiting finalization. */ + fo_set_next(curr_fo, GC_fnlz_roots.finalize_now); + GC_fnlz_roots.finalize_now = curr_fo; + + /* unhide object pointer so any future collections will */ + /* see it. */ + curr_fo -> fo_hidden_base = + (word)GC_REVEAL_POINTER(curr_fo -> fo_hidden_base); + GC_bytes_finalized += + curr_fo -> fo_object_size + sizeof(struct finalizable_object); + curr_fo = next_fo; + } + } + GC_fo_entries = 0; /* all entries deleted from the hash table */ + } + + /* Invoke all remaining finalizers that haven't yet been run. + * This is needed for strict compliance with the Java standard, + * which can make the runtime guarantee that all finalizers are run. + * Unfortunately, the Java standard implies we have to keep running + * finalizers until there are no more left, a potential infinite loop. + * YUCK. + * Note that this is even more dangerous than the usual Java + * finalizers, in that objects reachable from static variables + * may have been finalized when these finalizers are run. + * Finalizers run at this point must be prepared to deal with a + * mostly broken world. + * This routine is externally callable, so is called without + * the allocation lock. + */ + GC_API void GC_CALL GC_finalize_all(void) + { + DCL_LOCK_STATE; + + LOCK(); + while (GC_fo_entries > 0) { + GC_enqueue_all_finalizers(); + UNLOCK(); + GC_invoke_finalizers(); + /* Running the finalizers in this thread is arguably not a good */ + /* idea when we should be notifying another thread to run them. */ + /* But otherwise we don't have a great way to wait for them to */ + /* run. */ + LOCK(); + } + UNLOCK(); + } + +#endif /* !JAVA_FINALIZATION_NOT_NEEDED */ + +/* Returns true if it is worth calling GC_invoke_finalizers. (Useful if */ +/* finalizers can only be called from some kind of "safe state" and */ +/* getting into that safe state is expensive.) */ +GC_API int GC_CALL GC_should_invoke_finalizers(void) +{ + return GC_fnlz_roots.finalize_now != NULL; +} + +/* Invoke finalizers for all objects that are ready to be finalized. */ +/* Should be called without allocation lock. */ +GC_API int GC_CALL GC_invoke_finalizers(void) +{ + int count = 0; + word bytes_freed_before = 0; /* initialized to prevent warning. */ + DCL_LOCK_STATE; + + while (GC_fnlz_roots.finalize_now != NULL) { + struct finalizable_object * curr_fo; + +# ifdef THREADS + LOCK(); +# endif + if (count == 0) { + bytes_freed_before = GC_bytes_freed; + /* Don't do this outside, since we need the lock. */ + } + curr_fo = GC_fnlz_roots.finalize_now; +# ifdef THREADS + if (curr_fo != 0) GC_fnlz_roots.finalize_now = fo_next(curr_fo); + UNLOCK(); + if (curr_fo == 0) break; +# else + GC_fnlz_roots.finalize_now = fo_next(curr_fo); +# endif + fo_set_next(curr_fo, 0); + (*(curr_fo -> fo_fn))((ptr_t)(curr_fo -> fo_hidden_base), + curr_fo -> fo_client_data); + curr_fo -> fo_client_data = 0; + ++count; + /* Explicit freeing of curr_fo is probably a bad idea. */ + /* It throws off accounting if nearly all objects are */ + /* finalizable. Otherwise it should not matter. */ + } + /* bytes_freed_before is initialized whenever count != 0 */ + if (count != 0 && bytes_freed_before != GC_bytes_freed) { + LOCK(); + GC_finalizer_bytes_freed += (GC_bytes_freed - bytes_freed_before); + UNLOCK(); + } + return count; +} + +static word last_finalizer_notification = 0; + +GC_INNER void GC_notify_or_invoke_finalizers(void) +{ + GC_finalizer_notifier_proc notifier_fn = 0; +# if defined(KEEP_BACK_PTRS) || defined(MAKE_BACK_GRAPH) + static word last_back_trace_gc_no = 1; /* Skip first one. */ +# endif + DCL_LOCK_STATE; + +# if defined(THREADS) && !defined(KEEP_BACK_PTRS) \ + && !defined(MAKE_BACK_GRAPH) + /* Quick check (while unlocked) for an empty finalization queue. */ + if (NULL == GC_fnlz_roots.finalize_now) return; +# endif + LOCK(); + + /* This is a convenient place to generate backtraces if appropriate, */ + /* since that code is not callable with the allocation lock. */ +# if defined(KEEP_BACK_PTRS) || defined(MAKE_BACK_GRAPH) + if (GC_gc_no > last_back_trace_gc_no) { +# ifdef KEEP_BACK_PTRS + long i; + /* Stops when GC_gc_no wraps; that's OK. */ + last_back_trace_gc_no = (word)(-1); /* disable others. */ + for (i = 0; i < GC_backtraces; ++i) { + /* FIXME: This tolerates concurrent heap mutation, */ + /* which may cause occasional mysterious results. */ + /* We need to release the GC lock, since GC_print_callers */ + /* acquires it. It probably shouldn't. */ + UNLOCK(); + GC_generate_random_backtrace_no_gc(); + LOCK(); + } + last_back_trace_gc_no = GC_gc_no; +# endif +# ifdef MAKE_BACK_GRAPH + if (GC_print_back_height) { + UNLOCK(); + GC_print_back_graph_stats(); + LOCK(); + } +# endif + } +# endif + if (NULL == GC_fnlz_roots.finalize_now) { + UNLOCK(); + return; + } + + if (!GC_finalize_on_demand) { + unsigned char *pnested = GC_check_finalizer_nested(); + UNLOCK(); + /* Skip GC_invoke_finalizers() if nested */ + if (pnested != NULL) { + (void) GC_invoke_finalizers(); + *pnested = 0; /* Reset since no more finalizers. */ +# ifndef THREADS + GC_ASSERT(NULL == GC_fnlz_roots.finalize_now); +# endif /* Otherwise GC can run concurrently and add more */ + } + return; + } + + /* These variables require synchronization to avoid data races. */ + if (last_finalizer_notification != GC_gc_no) { + last_finalizer_notification = GC_gc_no; + notifier_fn = GC_finalizer_notifier; + } + UNLOCK(); + if (notifier_fn != 0) + (*notifier_fn)(); /* Invoke the notifier */ +} + +#ifndef SMALL_CONFIG +# ifndef GC_LONG_REFS_NOT_NEEDED +# define IF_LONG_REFS_PRESENT_ELSE(x,y) (x) +# else +# define IF_LONG_REFS_PRESENT_ELSE(x,y) (y) +# endif + + GC_INNER void GC_print_finalization_stats(void) + { + struct finalizable_object *fo; + unsigned long ready = 0; + + GC_log_printf("%lu finalization entries;" + " %lu/%lu short/long disappearing links alive\n", + (unsigned long)GC_fo_entries, + (unsigned long)GC_dl_hashtbl.entries, + (unsigned long)IF_LONG_REFS_PRESENT_ELSE( + GC_ll_hashtbl.entries, 0)); + + for (fo = GC_fnlz_roots.finalize_now; fo != NULL; fo = fo_next(fo)) + ++ready; + GC_log_printf("%lu finalization-ready objects;" + " %ld/%ld short/long links cleared\n", + ready, + (long)GC_old_dl_entries - (long)GC_dl_hashtbl.entries, + (long)IF_LONG_REFS_PRESENT_ELSE( + GC_old_ll_entries - GC_ll_hashtbl.entries, 0)); + } +#endif /* !SMALL_CONFIG */ + +#endif /* !GC_NO_FINALIZATION */ diff --git a/fnlz_mlc.c b/fnlz_mlc.c new file mode 100644 index 0000000..ff7b284 --- /dev/null +++ b/fnlz_mlc.c @@ -0,0 +1,99 @@ +/* + * Copyright (c) 2011 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +#include "private/gc_priv.h" + +#ifdef ENABLE_DISCLAIM + +#include "gc_disclaim.h" +#include "gc_inline.h" /* for GC_malloc_kind */ + +STATIC int GC_finalized_kind = 0; + +#if defined(KEEP_BACK_PTRS) || defined(MAKE_BACK_GRAPH) + /* The first bit is already used for a debug purpose. */ +# define FINALIZER_CLOSURE_FLAG 0x2 +#else +# define FINALIZER_CLOSURE_FLAG 0x1 +#endif + +STATIC int GC_CALLBACK GC_finalized_disclaim(void *obj) +{ + word fc_word = *(word *)obj; + + if ((fc_word & FINALIZER_CLOSURE_FLAG) != 0) { + /* The disclaim function may be passed fragments from the */ + /* free-list, on which it should not run finalization. */ + /* To recognize this case, we use the fact that the first word */ + /* on such fragments is always multiple of 4 (a link to the next */ + /* fragment, or NULL). If it is desirable to have a finalizer */ + /* which does not use the first word for storing finalization */ + /* info, GC_reclaim_with_finalization must be extended to clear */ + /* fragments so that the assumption holds for the selected word. */ + const struct GC_finalizer_closure *fc + = (void *)(fc_word & ~(word)FINALIZER_CLOSURE_FLAG); + (*fc->proc)((word *)obj + 1, fc->cd); + } + return 0; +} + +static GC_bool done_init = FALSE; + +GC_API void GC_CALL GC_init_finalized_malloc(void) +{ + DCL_LOCK_STATE; + + GC_init(); /* In case it's not already done. */ + LOCK(); + if (done_init) { + UNLOCK(); + return; + } + done_init = TRUE; + + /* The finalizer closure is placed in the first word in order to */ + /* use the lower bits to distinguish live objects from objects on */ + /* the free list. The downside of this is that we need one-word */ + /* offset interior pointers, and that GC_base does not return the */ + /* start of the user region. */ + GC_register_displacement_inner(sizeof(word)); + + GC_finalized_kind = GC_new_kind_inner(GC_new_free_list_inner(), + GC_DS_LENGTH, TRUE, TRUE); + GC_register_disclaim_proc(GC_finalized_kind, GC_finalized_disclaim, TRUE); + UNLOCK(); +} + +GC_API void GC_CALL GC_register_disclaim_proc(int kind, GC_disclaim_proc proc, + int mark_unconditionally) +{ + GC_ASSERT((unsigned)kind < MAXOBJKINDS); + GC_obj_kinds[kind].ok_disclaim_proc = proc; + GC_obj_kinds[kind].ok_mark_unconditionally = (GC_bool)mark_unconditionally; +} + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_finalized_malloc(size_t lb, + const struct GC_finalizer_closure *fclos) +{ + word *op; + + GC_ASSERT(done_init); + op = GC_malloc_kind(SIZET_SAT_ADD(lb, sizeof(word)), GC_finalized_kind); + if (EXPECT(NULL == op, FALSE)) + return NULL; + *op = (word)fclos | FINALIZER_CLOSURE_FLAG; + return op + 1; +} + +#endif /* ENABLE_DISCLAIM */ diff --git a/gc.mak b/gc.mak new file mode 100644 index 0000000..c0d142a --- /dev/null +++ b/gc.mak @@ -0,0 +1,2290 @@ +# Microsoft Developer Studio Generated NMAKE File, Format Version 4.10 +# This has been hand-edited way too many times. +# A clean, manually generated makefile would be an improvement. + +# TARGTYPE "Win32 (x86) Application" 0x0101 +# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102 + +!IF "$(CFG)" == "" +CFG=gctest - Win32 Release +!MESSAGE No configuration specified. Defaulting to gctest - Win32 Release. +!ENDIF + +!IF "$(CFG)" != "gc - Win32 Release" && "$(CFG)" != "gc - Win32 Debug" &&\ + "$(CFG)" != "gctest - Win32 Release" && "$(CFG)" != "gctest - Win32 Debug" &&\ + "$(CFG)" != "cord - Win32 Release" && "$(CFG)" != "cord - Win32 Debug" +!MESSAGE Invalid configuration "$(CFG)" specified. +!MESSAGE You can specify a configuration when running NMAKE on this makefile +!MESSAGE by defining the macro CFG on the command line. For example: +!MESSAGE +!MESSAGE NMAKE /f "gc.mak" CFG="cord - Win32 Debug" +!MESSAGE +!MESSAGE Possible choices for configuration are: +!MESSAGE +!MESSAGE "gc - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library") +!MESSAGE "gc - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library") +!MESSAGE "gctest - Win32 Release" (based on "Win32 (x86) Application") +!MESSAGE "gctest - Win32 Debug" (based on "Win32 (x86) Application") +!MESSAGE "cord - Win32 Release" (based on "Win32 (x86) Application") +!MESSAGE "cord - Win32 Debug" (based on "Win32 (x86) Application") +!MESSAGE +!ERROR An invalid configuration is specified. +!ENDIF + +!IF "$(OS)" == "Windows_NT" +NULL= +!ELSE +NULL=nul +!ENDIF +################################################################################ +# Begin Project +# PROP Target_Last_Scanned "gctest - Win32 Debug" + +!IF "$(CFG)" == "gc - Win32 Release" + +# PROP BASE Use_MFC 0 +# PROP BASE Use_Debug_Libraries 0 +# PROP BASE Output_Dir "Release" +# PROP BASE Intermediate_Dir "Release" +# PROP BASE Target_Dir "" +# PROP Use_MFC 0 +# PROP Use_Debug_Libraries 0 +# PROP Output_Dir "Release" +# PROP Intermediate_Dir "Release" +# PROP Target_Dir "" +OUTDIR=.\Release +INTDIR=.\Release + +ALL : ".\Release\gc.dll" ".\Release\gc.bsc" + +CLEAN : + -@erase ".\Release\allchblk.obj" + -@erase ".\Release\allchblk.sbr" + -@erase ".\Release\alloc.obj" + -@erase ".\Release\alloc.sbr" + -@erase ".\Release\blacklst.obj" + -@erase ".\Release\blacklst.sbr" + -@erase ".\Release\checksums.obj" + -@erase ".\Release\checksums.sbr" + -@erase ".\Release\dbg_mlc.obj" + -@erase ".\Release\dbg_mlc.sbr" + -@erase ".\Release\dyn_load.obj" + -@erase ".\Release\dyn_load.sbr" + -@erase ".\Release\finalize.obj" + -@erase ".\Release\finalize.sbr" + -@erase ".\Release\fnlz_mlc.obj" + -@erase ".\Release\fnlz_mlc.sbr" + -@erase ".\Release\gc.bsc" + -@erase ".\Release\gc_cpp.obj" + -@erase ".\Release\gc_cpp.sbr" + -@erase ".\Release\gc.dll" + -@erase ".\Release\gc.exp" + 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".\Release\stubborn.sbr"\ + ".\Release\typd_mlc.sbr"\ + ".\Release\msvc_dbg.copied.sbr"\ + ".\Release\win32_threads.sbr" + +".\Release\gc.bsc" : "$(OUTDIR)" $(BSC32_SBRS) + $(BSC32) @<< + $(BSC32_FLAGS) $(BSC32_SBRS) +<< + +LINK32=link.exe +# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /machine:I386 +# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /machine:I386 +LINK32_FLAGS=kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib\ + advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib\ + odbccp32.lib /nologo /subsystem:windows /dll /incremental:no\ + /pdb:"$(OUTDIR)/gc.pdb" /machine:I386 /out:"$(OUTDIR)/gc.dll"\ + /implib:"$(OUTDIR)/gc.lib" +LINK32_OBJS=\ + ".\Release\allchblk.obj"\ + 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+ ".\Debug\win32_threads.sbr" + +".\Debug\gc.bsc" : "$(OUTDIR)" $(BSC32_SBRS) + $(BSC32) @<< + $(BSC32_FLAGS) $(BSC32_SBRS) +<< + +LINK32=link.exe +# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /debug /machine:I386 +# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /incremental:no /map /debug /machine:I386 +LINK32_FLAGS=kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib\ + advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib\ + odbccp32.lib /nologo /subsystem:windows /dll /incremental:no\ + /pdb:"$(OUTDIR)/gc.pdb" /map:"$(INTDIR)/gc.map" /debug /machine:I386\ + /out:"$(OUTDIR)/gc.dll" /implib:"$(OUTDIR)/gc.lib" +LINK32_OBJS=\ + ".\Debug\allchblk.obj"\ + ".\Debug\alloc.obj"\ + ".\Debug\blacklst.obj"\ + ".\Debug\checksums.obj"\ + ".\Debug\dbg_mlc.obj"\ + ".\Debug\dyn_load.obj"\ + ".\Debug\finalize.obj"\ + ".\Debug\fnlz_mlc.obj"\ + ".\Debug\gc_cpp.obj"\ + ".\Debug\headers.obj"\ + ".\Debug\mach_dep.obj"\ + ".\Debug\malloc.obj"\ + ".\Debug\mallocx.obj"\ + ".\Debug\mark.obj"\ + ".\Debug\mark_rts.obj"\ + ".\Debug\misc.obj"\ + ".\Debug\new_hblk.obj"\ + ".\Debug\obj_map.obj"\ + ".\Debug\os_dep.obj"\ + ".\Debug\ptr_chck.obj"\ + ".\Debug\reclaim.obj"\ + ".\Debug\stubborn.obj"\ + ".\Debug\typd_mlc.obj"\ + ".\Debug\msvc_dbg.copied.obj"\ + ".\Debug\win32_threads.obj" + +".\Debug\gc.dll" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS) + $(LINK32) @<< + $(LINK32_FLAGS) $(LINK32_OBJS) +<< + +!ELSEIF "$(CFG)" == "gctest - Win32 Release" + +# PROP BASE Use_MFC 0 +# PROP BASE Use_Debug_Libraries 0 +# PROP BASE Output_Dir "gctest\Release" +# PROP BASE Intermediate_Dir "gctest\Release" +# PROP BASE Target_Dir "gctest" +# PROP Use_MFC 0 +# PROP Use_Debug_Libraries 0 +# PROP Output_Dir 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{$(INCLUDE)}"\sys\STAT.H"\ + {$(INCLUDE)}"\sys\TYPES.H"\ + +NODEP_CPP_DYN_L=\ + ".\il\PCR_IL.h"\ + ".\mm\PCR_MM.h"\ + ".\th\PCR_Th.h"\ + ".\th\PCR_ThCrSec.h"\ + ".\th\PCR_ThCtl.h"\ + + +".\Release\dyn_load.obj" : $(SOURCE) $(DEP_CPP_DYN_L) "$(INTDIR)" + +".\Release\dyn_load.sbr" : $(SOURCE) $(DEP_CPP_DYN_L) "$(INTDIR)" + + +!ELSEIF "$(CFG)" == "gc - Win32 Debug" + +DEP_CPP_DYN_L=\ + ".\include\private\gcconfig.h"\ + ".\include\gc.h"\ + ".\include\private\gc_hdrs.h"\ + ".\include\private\gc_priv.h"\ + {$(INCLUDE)}"\sys\STAT.H"\ + {$(INCLUDE)}"\sys\TYPES.H"\ + +NODEP_CPP_DYN_L=\ + ".\il\PCR_IL.h"\ + ".\mm\PCR_MM.h"\ + ".\th\PCR_Th.h"\ + ".\th\PCR_ThCrSec.h"\ + ".\th\PCR_ThCtl.h"\ + + +".\Debug\dyn_load.obj" : $(SOURCE) $(DEP_CPP_DYN_L) "$(INTDIR)" + +".\Debug\dyn_load.sbr" : $(SOURCE) $(DEP_CPP_DYN_L) "$(INTDIR)" + + +!ENDIF + +# End Source File +################################################################################ +# Begin Source File + +SOURCE=.\win32_threads.c + +!IF "$(CFG)" == "gc - Win32 Release" + +DEP_CPP_WIN32=\ + ".\include\private\gcconfig.h"\ + ".\include\gc.h"\ + ".\include\private\gc_hdrs.h"\ + ".\include\private\gc_priv.h"\ + {$(INCLUDE)}"\sys\TYPES.H"\ + +NODEP_CPP_WIN32=\ + ".\th\PCR_Th.h"\ + ".\th\PCR_ThCrSec.h"\ + ".\th\PCR_ThCtl.h"\ + + +".\Release\win32_threads.obj" : $(SOURCE) $(DEP_CPP_WIN32) "$(INTDIR)" + +".\Release\win32_threads.sbr" : $(SOURCE) $(DEP_CPP_WIN32) "$(INTDIR)" + + +!ELSEIF "$(CFG)" == "gc - Win32 Debug" + +DEP_CPP_WIN32=\ + ".\include\private\gcconfig.h"\ + ".\include\gc.h"\ + ".\include\private\gc_hdrs.h"\ + ".\include\private\gc_priv.h"\ + {$(INCLUDE)}"\sys\TYPES.H"\ + +NODEP_CPP_WIN32=\ + ".\th\PCR_Th.h"\ + ".\th\PCR_ThCrSec.h"\ + ".\th\PCR_ThCtl.h"\ + + +".\Debug\win32_threads.obj" : $(SOURCE) $(DEP_CPP_WIN32) "$(INTDIR)" + +".\Debug\win32_threads.sbr" : $(SOURCE) $(DEP_CPP_WIN32) "$(INTDIR)" + + +!ENDIF + +# End Source File +################################################################################ +# Begin Source File + +SOURCE=.\extra\msvc_dbg.c + +msvc_dbg.copied.c : extra\msvc_dbg.c + copy extra\msvc_dbg.c msvc_dbg.copied.c + +!IF "$(CFG)" == "gc - Win32 Release" + +DEP_CPP_WIN32=\ + ".\include\private\gcconfig.h"\ + ".\include\gc.h"\ + ".\include\private\gc_hdrs.h"\ + ".\include\private\gc_priv.h"\ + ".\include\private\msvc_dbg.h"\ + {$(INCLUDE)}"\sys\TYPES.H"\ + +NODEP_CPP_WIN32=\ + ".\th\PCR_Th.h"\ + ".\th\PCR_ThCrSec.h"\ + ".\th\PCR_ThCtl.h"\ + + +".\Release\msvc_dbg.copied.obj" : $(SOURCE) $(DEP_CPP_WIN32) "$(INTDIR)" + +".\Release\msvc_dbg.copied.sbr" : $(SOURCE) $(DEP_CPP_WIN32) "$(INTDIR)" + + +!ELSEIF "$(CFG)" == "gc - Win32 Debug" + +DEP_CPP_WIN32=\ + ".\include\private\gcconfig.h"\ + ".\include\gc.h"\ + ".\include\private\gc_hdrs.h"\ + ".\include\private\gc_priv.h"\ + ".\include\private\msvc_dbg.h"\ + {$(INCLUDE)}"\sys\TYPES.H"\ + +NODEP_CPP_WIN32=\ + ".\th\PCR_Th.h"\ + ".\th\PCR_ThCrSec.h"\ + ".\th\PCR_ThCtl.h"\ + + +".\Debug\msvc_dbg.copied.obj" : $(SOURCE) $(DEP_CPP_WIN32) "$(INTDIR)" + +".\Debug\msvc_dbg.copied.sbr" : $(SOURCE) $(DEP_CPP_WIN32) "$(INTDIR)" + + +!ENDIF + +# End Source File +################################################################################ +# Begin Source File + +SOURCE=.\checksums.c + +!IF "$(CFG)" == "gc - Win32 Release" + +DEP_CPP_CHECK=\ + ".\include\private\gcconfig.h"\ + ".\include\gc.h"\ + ".\include\private\gc_hdrs.h"\ + ".\include\private\gc_priv.h"\ + {$(INCLUDE)}"\sys\TYPES.H"\ + +NODEP_CPP_CHECK=\ + ".\th\PCR_Th.h"\ + ".\th\PCR_ThCrSec.h"\ + ".\th\PCR_ThCtl.h"\ + + +".\Release\checksums.obj" : $(SOURCE) $(DEP_CPP_CHECK) "$(INTDIR)" + +".\Release\checksums.sbr" : $(SOURCE) $(DEP_CPP_CHECK) "$(INTDIR)" + + +!ELSEIF "$(CFG)" == "gc - Win32 Debug" + +DEP_CPP_CHECK=\ + ".\include\private\gcconfig.h"\ + ".\include\gc.h"\ + ".\include\private\gc_hdrs.h"\ + ".\include\private\gc_priv.h"\ + {$(INCLUDE)}"\sys\TYPES.H"\ + +NODEP_CPP_CHECK=\ + ".\th\PCR_Th.h"\ + ".\th\PCR_ThCrSec.h"\ + ".\th\PCR_ThCtl.h"\ + + +".\Debug\checksums.obj" : $(SOURCE) $(DEP_CPP_CHECK) "$(INTDIR)" + +".\Debug\checksums.sbr" : $(SOURCE) $(DEP_CPP_CHECK) "$(INTDIR)" + + +!ENDIF + +# End Source File +# End Target +################################################################################ +# Begin Target + +# Name "gctest - Win32 Release" +# Name "gctest - Win32 Debug" + +!IF "$(CFG)" == "gctest - Win32 Release" + +!ELSEIF "$(CFG)" == "gctest - Win32 Debug" + +!ENDIF + +################################################################################ +# Begin Project Dependency + +# Project_Dep_Name "gc" + +!IF "$(CFG)" == "gctest - Win32 Release" + +"gc - Win32 Release" : + $(MAKE) /$(MAKEFLAGS) /F ".\gc.mak" CFG="gc - Win32 Release" + +!ELSEIF "$(CFG)" == "gctest - Win32 Debug" + +"gc - Win32 Debug" : + $(MAKE) /$(MAKEFLAGS) /F ".\gc.mak" CFG="gc - Win32 Debug" + +!ENDIF + +# End Project Dependency +################################################################################ +# Begin Source File + +SOURCE=.\tests\test.c +DEP_CPP_TEST_=\ + ".\include\private\gcconfig.h"\ + ".\include\gc.h"\ + ".\include\private\gc_hdrs.h"\ + ".\include\private\gc_priv.h"\ + ".\include\gc_typed.h"\ + {$(INCLUDE)}"\sys\TYPES.H"\ + +NODEP_CPP_TEST_=\ + ".\th\PCR_Th.h"\ + ".\th\PCR_ThCrSec.h"\ + ".\th\PCR_ThCtl.h"\ + + +!IF "$(CFG)" == "gctest - Win32 Release" + + +".\gctest\Release\test.copied.obj" : $(SOURCE) $(DEP_CPP_TEST_) "$(INTDIR)" + + +!ELSEIF "$(CFG)" == "gctest - Win32 Debug" + + +".\gctest\Debug\test.copied.obj" : $(SOURCE) $(DEP_CPP_TEST_) "$(INTDIR)" + +".\gctest\Debug\test.copied.sbr" : $(SOURCE) $(DEP_CPP_TEST_) "$(INTDIR)" + + +!ENDIF + +# End Source File +# End Target +################################################################################ +# Begin Target + +# Name "cord - Win32 Release" +# Name "cord - Win32 Debug" + +!IF "$(CFG)" == "cord - Win32 Release" + +!ELSEIF "$(CFG)" == "cord - Win32 Debug" + +!ENDIF + +################################################################################ +# Begin Project Dependency + +# Project_Dep_Name "gc" + +!IF "$(CFG)" == "cord - Win32 Release" + +"gc - Win32 Release" : + $(MAKE) /$(MAKEFLAGS) /F ".\gc.mak" CFG="gc - Win32 Release" + +!ELSEIF "$(CFG)" == "cord - Win32 Debug" + +"gc - Win32 Debug" : + $(MAKE) /$(MAKEFLAGS) /F ".\gc.mak" CFG="gc - Win32 Debug" + +!ENDIF + +# End Project Dependency +################################################################################ +# Begin Source File + +SOURCE=.\cord\tests\de_win.c +DEP_CPP_DE_WI=\ + ".\include\cord.h"\ + ".\cord\tests\de_cmds.h"\ + ".\cord\tests\de_win.h"\ + ".\include\cord_pos.h"\ + +NODEP_CPP_DE_WI=\ + ".\include\gc.h"\ + + +!IF "$(CFG)" == "cord - Win32 Release" + + +".\cord\Release\de_win.obj" : $(SOURCE) $(DEP_CPP_DE_WI) "$(INTDIR)" + $(CPP) $(CPP_PROJ) $(SOURCE) + + +!ELSEIF "$(CFG)" == "cord - Win32 Debug" + + +".\cord\Debug\de_win.obj" : $(SOURCE) $(DEP_CPP_DE_WI) "$(INTDIR)" + $(CPP) $(CPP_PROJ) $(SOURCE) + + +!ENDIF + +# End Source File +################################################################################ +# Begin Source File + +SOURCE=.\cord\tests\de.c +DEP_CPP_DE_C2e=\ + ".\include\cord.h"\ + ".\cord\tests\de_cmds.h"\ + ".\cord\tests\de_win.h"\ + ".\include\cord_pos.h"\ + +NODEP_CPP_DE_C2e=\ + ".\include\gc.h"\ + + +!IF "$(CFG)" == "cord - Win32 Release" + + +".\cord\Release\de.obj" : $(SOURCE) $(DEP_CPP_DE_C2e) "$(INTDIR)" + $(CPP) $(CPP_PROJ) $(SOURCE) + + +!ELSEIF "$(CFG)" == "cord - Win32 Debug" + + +".\cord\Debug\de.obj" : $(SOURCE) $(DEP_CPP_DE_C2e) "$(INTDIR)" + $(CPP) $(CPP_PROJ) $(SOURCE) + + +!ENDIF + +# End Source File +################################################################################ +# Begin Source File + +SOURCE=.\cord\cordxtra.c +DEP_CPP_CORDX=\ + ".\include\cord.h"\ + ".\include\ec.h"\ + ".\include\cord_pos.h"\ + +NODEP_CPP_CORDX=\ + ".\include\gc.h"\ + + +!IF "$(CFG)" == "cord - Win32 Release" + + +".\cord\Release\cordxtra.obj" : $(SOURCE) $(DEP_CPP_CORDX) "$(INTDIR)" + $(CPP) $(CPP_PROJ) $(SOURCE) + + +!ELSEIF "$(CFG)" == "cord - Win32 Debug" + + +".\cord\Debug\cordxtra.obj" : $(SOURCE) $(DEP_CPP_CORDX) "$(INTDIR)" + $(CPP) $(CPP_PROJ) $(SOURCE) + + +!ENDIF + +# End Source File +################################################################################ +# Begin Source File + +SOURCE=.\cord\cordbscs.c +DEP_CPP_CORDB=\ + ".\include\cord.h"\ + ".\include\cord_pos.h"\ + +NODEP_CPP_CORDB=\ + ".\include\gc.h"\ + + +!IF "$(CFG)" == "cord - Win32 Release" + + +".\cord\Release\cordbscs.obj" : $(SOURCE) $(DEP_CPP_CORDB) "$(INTDIR)" + $(CPP) $(CPP_PROJ) $(SOURCE) + + +!ELSEIF "$(CFG)" == "cord - Win32 Debug" + + +".\cord\Debug\cordbscs.obj" : $(SOURCE) $(DEP_CPP_CORDB) "$(INTDIR)" + $(CPP) $(CPP_PROJ) $(SOURCE) + + +!ENDIF + +# End Source File +################################################################################ +# Begin Source File + +SOURCE=.\cord\tests\de_win.rc + +!IF "$(CFG)" == "cord - Win32 Release" + + +".\cord\Release\de_win.res" : $(SOURCE) "$(INTDIR)" + $(RSC) /l 0x809 /fo"$(INTDIR)/de_win.res" /i "cord" /d "NDEBUG" $(SOURCE) + + +!ELSEIF "$(CFG)" == "cord - Win32 Debug" + + +".\cord\Debug\de_win.res" : $(SOURCE) "$(INTDIR)" + $(RSC) /l 0x809 /fo"$(INTDIR)/de_win.res" /i "cord" /d "_DEBUG" $(SOURCE) + + +!ENDIF + +# End Source File +# End Target +# End Project +################################################################################ diff --git a/gc_cpp.cc b/gc_cpp.cc new file mode 100644 index 0000000..103e66f --- /dev/null +++ b/gc_cpp.cc @@ -0,0 +1,80 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to copy this code for any purpose, + * provided the above notices are retained on all copies. + */ + +/************************************************************************* +This implementation module for gc_c++.h provides an implementation of +the global operators "new" and "delete" that calls the Boehm +allocator. All objects allocated by this implementation will be +uncollectible but part of the root set of the collector. + +You should ensure (using implementation-dependent techniques) that the +linker finds this module before the library that defines the default +built-in "new" and "delete". +**************************************************************************/ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#ifndef GC_BUILD +# define GC_BUILD +#endif + +#include "gc_cpp.h" + +#if !defined(GC_NEW_DELETE_NEED_THROW) && defined(__GNUC__) \ + && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2)) +# define GC_NEW_DELETE_NEED_THROW +#endif + +#ifdef GC_NEW_DELETE_NEED_THROW +# include /* for std::bad_alloc */ +# define GC_DECL_NEW_THROW throw(std::bad_alloc) +# define GC_DECL_DELETE_THROW throw() +#else +# define GC_DECL_NEW_THROW /* empty */ +# define GC_DECL_DELETE_THROW /* empty */ +#endif // !GC_NEW_DELETE_NEED_THROW + +#ifndef _MSC_VER + + void* operator new(size_t size) GC_DECL_NEW_THROW { + return GC_MALLOC_UNCOLLECTABLE(size); + } + + void operator delete(void* obj) GC_DECL_DELETE_THROW { + GC_FREE(obj); + } + +# if defined(GC_OPERATOR_NEW_ARRAY) && !defined(CPPCHECK) + void* operator new[](size_t size) GC_DECL_NEW_THROW { + return GC_MALLOC_UNCOLLECTABLE(size); + } + + void operator delete[](void* obj) GC_DECL_DELETE_THROW { + GC_FREE(obj); + } +# endif // GC_OPERATOR_NEW_ARRAY + +# if __cplusplus > 201103L // C++14 + void operator delete(void* obj, size_t size) GC_DECL_DELETE_THROW { + (void)size; // size is ignored + GC_FREE(obj); + } + +# if defined(GC_OPERATOR_NEW_ARRAY) && !defined(CPPCHECK) + void operator delete[](void* obj, size_t size) GC_DECL_DELETE_THROW { + (void)size; + GC_FREE(obj); + } +# endif +# endif // C++14 + +#endif // !_MSC_VER diff --git a/gc_cpp.cpp b/gc_cpp.cpp new file mode 100644 index 0000000..f6bd95e --- /dev/null +++ b/gc_cpp.cpp @@ -0,0 +1,2 @@ +// Visual C++ seems to prefer a .cpp extension to .cc +#include "gc_cpp.cc" diff --git a/gc_dlopen.c b/gc_dlopen.c new file mode 100644 index 0000000..0da8227 --- /dev/null +++ b/gc_dlopen.c @@ -0,0 +1,100 @@ +/* + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1997 by Silicon Graphics. All rights reserved. + * Copyright (c) 2000 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +/* This used to be in dyn_load.c. It was extracted into a separate */ +/* file to avoid having to link against libdl.{a,so} if the client */ +/* doesn't call dlopen. Of course this fails if the collector is in */ +/* a dynamic library. -HB */ +#if defined(GC_PTHREADS) && !defined(GC_NO_DLOPEN) + +#undef GC_MUST_RESTORE_REDEFINED_DLOPEN +#if defined(dlopen) && !defined(GC_USE_LD_WRAP) + /* To support various threads pkgs, gc.h interposes on dlopen by */ + /* defining "dlopen" to be "GC_dlopen", which is implemented below. */ + /* However, both GC_FirstDLOpenedLinkMap() and GC_dlopen() use the */ + /* real system dlopen() in their implementation. We first remove */ + /* gc.h's dlopen definition and restore it later, after GC_dlopen(). */ +# undef dlopen +# define GC_MUST_RESTORE_REDEFINED_DLOPEN +#endif + +/* Make sure we're not in the middle of a collection, and make sure we */ +/* don't start any. This is invoked prior to a dlopen call to avoid */ +/* synchronization issues. We can't just acquire the allocation lock, */ +/* since startup code in dlopen may try to allocate. This solution */ +/* risks heap growth (or, even, heap overflow) in the presence of many */ +/* dlopen calls in either a multi-threaded environment, or if the */ +/* library initialization code allocates substantial amounts of GC'ed */ +/* memory. */ +#ifndef USE_PROC_FOR_LIBRARIES + static void disable_gc_for_dlopen(void) + { + DCL_LOCK_STATE; + LOCK(); + while (GC_incremental && GC_collection_in_progress()) { + GC_collect_a_little_inner(1000); + } + ++GC_dont_gc; + UNLOCK(); + } +#endif + +/* Redefine dlopen to guarantee mutual exclusion with */ +/* GC_register_dynamic_libraries. Should probably happen for */ +/* other operating systems, too. */ + +/* This is similar to WRAP/REAL_FUNC() in pthread_support.c. */ +#ifdef GC_USE_LD_WRAP +# define WRAP_DLFUNC(f) __wrap_##f +# define REAL_DLFUNC(f) __real_##f + void * REAL_DLFUNC(dlopen)(const char *, int); +#else +# define WRAP_DLFUNC(f) GC_##f +# define REAL_DLFUNC(f) f +#endif + +GC_API void * WRAP_DLFUNC(dlopen)(const char *path, int mode) +{ + void * result; + +# ifndef USE_PROC_FOR_LIBRARIES + /* Disable collections. This solution risks heap growth (or, */ + /* even, heap overflow) but there seems no better solutions. */ + disable_gc_for_dlopen(); +# endif + result = REAL_DLFUNC(dlopen)(path, mode); +# ifndef USE_PROC_FOR_LIBRARIES + GC_enable(); /* undoes disable_gc_for_dlopen */ +# endif + return(result); +} + +#ifdef GC_USE_LD_WRAP + /* Define GC_ function as an alias for the plain one, which will be */ + /* intercepted. This allows files which include gc.h, and hence */ + /* generate references to the GC_ symbol, to see the right symbol. */ + GC_API void *GC_dlopen(const char *path, int mode) + { + return dlopen(path, mode); + } +#endif /* GC_USE_LD_WRAP */ + +#ifdef GC_MUST_RESTORE_REDEFINED_DLOPEN +# define dlopen GC_dlopen +#endif + +#endif /* GC_PTHREADS && !GC_NO_DLOPEN */ diff --git a/gcj_mlc.c b/gcj_mlc.c new file mode 100644 index 0000000..7b4ea9d --- /dev/null +++ b/gcj_mlc.c @@ -0,0 +1,270 @@ +/* + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +#include "private/gc_pmark.h" /* includes gc_priv.h */ + +#ifdef GC_GCJ_SUPPORT + +/* + * This is an allocator interface tuned for gcj (the GNU static + * java compiler). + * + * Each allocated object has a pointer in its first word to a vtable, + * which for our purposes is simply a structure describing the type of + * the object. + * This descriptor structure contains a GC marking descriptor at offset + * MARK_DESCR_OFFSET. + * + * It is hoped that this interface may also be useful for other systems, + * possibly with some tuning of the constants. But the immediate goal + * is to get better gcj performance. + * + * We assume: + * 1) Counting on explicit initialization of this interface is OK; + * 2) FASTLOCK is not a significant win. + */ + +#include "gc_gcj.h" +#include "private/dbg_mlc.h" + +#ifdef GC_ASSERTIONS + GC_INNER /* variable is also used in thread_local_alloc.c */ +#else + STATIC +#endif +GC_bool GC_gcj_malloc_initialized = FALSE; + +int GC_gcj_kind = 0; /* Object kind for objects with descriptors */ + /* in "vtable". */ +int GC_gcj_debug_kind = 0; + /* The kind of objects that is always marked */ + /* with a mark proc call. */ + +GC_INNER ptr_t * GC_gcjobjfreelist = NULL; + +STATIC struct GC_ms_entry * GC_gcj_fake_mark_proc(word * addr GC_ATTR_UNUSED, + struct GC_ms_entry *mark_stack_ptr, + struct GC_ms_entry * mark_stack_limit GC_ATTR_UNUSED, + word env GC_ATTR_UNUSED) +{ + ABORT_RET("No client gcj mark proc is specified"); + return mark_stack_ptr; +} + +/* Caller does not hold allocation lock. */ +GC_API void GC_CALL GC_init_gcj_malloc(int mp_index, + void * /* really GC_mark_proc */mp) +{ + GC_bool ignore_gcj_info; + DCL_LOCK_STATE; + + if (mp == 0) /* In case GC_DS_PROC is unused. */ + mp = (void *)(word)GC_gcj_fake_mark_proc; + + GC_init(); /* In case it's not already done. */ + LOCK(); + if (GC_gcj_malloc_initialized) { + UNLOCK(); + return; + } + GC_gcj_malloc_initialized = TRUE; +# ifdef GC_IGNORE_GCJ_INFO + /* This is useful for debugging on platforms with missing getenv(). */ + ignore_gcj_info = 1; +# else + ignore_gcj_info = (0 != GETENV("GC_IGNORE_GCJ_INFO")); +# endif + if (ignore_gcj_info) { + GC_COND_LOG_PRINTF("Gcj-style type information is disabled!\n"); + } + GC_ASSERT(GC_mark_procs[mp_index] == (GC_mark_proc)0); /* unused */ + GC_mark_procs[mp_index] = (GC_mark_proc)(word)mp; + if ((unsigned)mp_index >= GC_n_mark_procs) + ABORT("GC_init_gcj_malloc: bad index"); + /* Set up object kind gcj-style indirect descriptor. */ + GC_gcjobjfreelist = (ptr_t *)GC_new_free_list_inner(); + if (ignore_gcj_info) { + /* Use a simple length-based descriptor, thus forcing a fully */ + /* conservative scan. */ + GC_gcj_kind = GC_new_kind_inner((void **)GC_gcjobjfreelist, + /* 0 | */ GC_DS_LENGTH, + TRUE, TRUE); + } else { + GC_gcj_kind = GC_new_kind_inner( + (void **)GC_gcjobjfreelist, + (((word)(-(signed_word)MARK_DESCR_OFFSET + - GC_INDIR_PER_OBJ_BIAS)) + | GC_DS_PER_OBJECT), + FALSE, TRUE); + } + /* Set up object kind for objects that require mark proc call. */ + if (ignore_gcj_info) { + GC_gcj_debug_kind = GC_gcj_kind; + } else { + GC_gcj_debug_kind = GC_new_kind_inner(GC_new_free_list_inner(), + GC_MAKE_PROC(mp_index, + 1 /* allocated with debug info */), + FALSE, TRUE); + } + UNLOCK(); +} + +#define GENERAL_MALLOC_INNER(lb,k) \ + GC_clear_stack(GC_generic_malloc_inner(lb, k)) + +#define GENERAL_MALLOC_INNER_IOP(lb,k) \ + GC_clear_stack(GC_generic_malloc_inner_ignore_off_page(lb, k)) + +/* We need a mechanism to release the lock and invoke finalizers. */ +/* We don't really have an opportunity to do this on a rarely executed */ +/* path on which the lock is not held. Thus we check at a */ +/* rarely executed point at which it is safe to release the lock. */ +/* We do this even where we could just call GC_INVOKE_FINALIZERS, */ +/* since it's probably cheaper and certainly more uniform. */ +/* FIXME - Consider doing the same elsewhere? */ +static void maybe_finalize(void) +{ + static word last_finalized_no = 0; + DCL_LOCK_STATE; + + if (GC_gc_no == last_finalized_no || + !EXPECT(GC_is_initialized, TRUE)) return; + UNLOCK(); + GC_INVOKE_FINALIZERS(); + LOCK(); + last_finalized_no = GC_gc_no; +} + +/* Allocate an object, clear it, and store the pointer to the */ +/* type structure (vtable in gcj). */ +/* This adds a byte at the end of the object if GC_malloc would.*/ +#ifdef THREAD_LOCAL_ALLOC + GC_INNER void * GC_core_gcj_malloc(size_t lb, + void * ptr_to_struct_containing_descr) +#else + GC_API GC_ATTR_MALLOC void * GC_CALL GC_gcj_malloc(size_t lb, + void * ptr_to_struct_containing_descr) +#endif +{ + ptr_t op; + DCL_LOCK_STATE; + + GC_DBG_COLLECT_AT_MALLOC(lb); + if(SMALL_OBJ(lb)) { + word lg = GC_size_map[lb]; + + LOCK(); + op = GC_gcjobjfreelist[lg]; + if(EXPECT(0 == op, FALSE)) { + maybe_finalize(); + op = (ptr_t)GENERAL_MALLOC_INNER((word)lb, GC_gcj_kind); + if (0 == op) { + GC_oom_func oom_fn = GC_oom_fn; + UNLOCK(); + return((*oom_fn)(lb)); + } + } else { + GC_gcjobjfreelist[lg] = obj_link(op); + GC_bytes_allocd += GRANULES_TO_BYTES((word)lg); + } + *(void **)op = ptr_to_struct_containing_descr; + GC_ASSERT(((void **)op)[1] == 0); + UNLOCK(); + } else { + LOCK(); + maybe_finalize(); + op = (ptr_t)GENERAL_MALLOC_INNER((word)lb, GC_gcj_kind); + if (0 == op) { + GC_oom_func oom_fn = GC_oom_fn; + UNLOCK(); + return((*oom_fn)(lb)); + } + *(void **)op = ptr_to_struct_containing_descr; + UNLOCK(); + } + return((void *) op); +} + +/* Similar to GC_gcj_malloc, but add debug info. This is allocated */ +/* with GC_gcj_debug_kind. */ +GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_gcj_malloc(size_t lb, + void * ptr_to_struct_containing_descr, GC_EXTRA_PARAMS) +{ + void * result; + DCL_LOCK_STATE; + + /* We're careful to avoid extra calls, which could */ + /* confuse the backtrace. */ + LOCK(); + maybe_finalize(); + result = GC_generic_malloc_inner(SIZET_SAT_ADD(lb, DEBUG_BYTES), + GC_gcj_debug_kind); + if (result == 0) { + GC_oom_func oom_fn = GC_oom_fn; + UNLOCK(); + GC_err_printf("GC_debug_gcj_malloc(%lu, %p) returning NULL (%s:%d)\n", + (unsigned long)lb, ptr_to_struct_containing_descr, s, i); + return((*oom_fn)(lb)); + } + *((void **)((ptr_t)result + sizeof(oh))) = ptr_to_struct_containing_descr; + UNLOCK(); + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, i)); +} + +/* There is no THREAD_LOCAL_ALLOC for GC_gcj_malloc_ignore_off_page(). */ +GC_API GC_ATTR_MALLOC void * GC_CALL GC_gcj_malloc_ignore_off_page(size_t lb, + void * ptr_to_struct_containing_descr) +{ + ptr_t op; + DCL_LOCK_STATE; + + GC_DBG_COLLECT_AT_MALLOC(lb); + if(SMALL_OBJ(lb)) { + word lg = GC_size_map[lb]; + + LOCK(); + op = GC_gcjobjfreelist[lg]; + if (EXPECT(0 == op, FALSE)) { + maybe_finalize(); + op = (ptr_t)GENERAL_MALLOC_INNER_IOP(lb, GC_gcj_kind); + if (0 == op) { + GC_oom_func oom_fn = GC_oom_fn; + UNLOCK(); + return((*oom_fn)(lb)); + } + } else { + GC_gcjobjfreelist[lg] = obj_link(op); + GC_bytes_allocd += GRANULES_TO_BYTES((word)lg); + } + } else { + LOCK(); + maybe_finalize(); + op = (ptr_t)GENERAL_MALLOC_INNER_IOP(lb, GC_gcj_kind); + if (0 == op) { + GC_oom_func oom_fn = GC_oom_fn; + UNLOCK(); + return((*oom_fn)(lb)); + } + } + *(void **)op = ptr_to_struct_containing_descr; + UNLOCK(); + return((void *) op); +} + +#endif /* GC_GCJ_SUPPORT */ diff --git a/headers.c b/headers.c new file mode 100644 index 0000000..0c258de --- /dev/null +++ b/headers.c @@ -0,0 +1,406 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +/* + * This implements: + * 1. allocation of heap block headers + * 2. A map from addresses to heap block addresses to heap block headers + * + * Access speed is crucial. We implement an index structure based on a 2 + * level tree. + */ + +STATIC bottom_index * GC_all_bottom_indices = 0; + /* Pointer to first (lowest addr) */ + /* bottom_index. */ + +STATIC bottom_index * GC_all_bottom_indices_end = 0; + /* Pointer to last (highest addr) */ + /* bottom_index. */ + +/* Non-macro version of header location routine */ +GC_INNER hdr * GC_find_header(ptr_t h) +{ +# ifdef HASH_TL + hdr * result; + GET_HDR(h, result); + return(result); +# else + return(HDR_INNER(h)); +# endif +} + +/* Handle a header cache miss. Returns a pointer to the */ +/* header corresponding to p, if p can possibly be a valid */ +/* object pointer, and 0 otherwise. */ +/* GUARANTEED to return 0 for a pointer past the first page */ +/* of an object unless both GC_all_interior_pointers is set */ +/* and p is in fact a valid object pointer. */ +/* Never returns a pointer to a free hblk. */ +GC_INNER hdr * +#ifdef PRINT_BLACK_LIST + GC_header_cache_miss(ptr_t p, hdr_cache_entry *hce, ptr_t source) +#else + GC_header_cache_miss(ptr_t p, hdr_cache_entry *hce) +#endif +{ + hdr *hhdr; + HC_MISS(); + GET_HDR(p, hhdr); + if (IS_FORWARDING_ADDR_OR_NIL(hhdr)) { + if (GC_all_interior_pointers) { + if (hhdr != 0) { + ptr_t current = p; + + current = (ptr_t)HBLKPTR(current); + do { + current = current - HBLKSIZE*(word)hhdr; + hhdr = HDR(current); + } while(IS_FORWARDING_ADDR_OR_NIL(hhdr)); + /* current points to near the start of the large object */ + if (hhdr -> hb_flags & IGNORE_OFF_PAGE) + return 0; + if (HBLK_IS_FREE(hhdr) + || p - current >= (ptrdiff_t)(hhdr->hb_sz)) { + GC_ADD_TO_BLACK_LIST_NORMAL(p, source); + /* Pointer past the end of the block */ + return 0; + } + } else { + GC_ADD_TO_BLACK_LIST_NORMAL(p, source); + /* And return zero: */ + } + GC_ASSERT(hhdr == 0 || !HBLK_IS_FREE(hhdr)); + return hhdr; + /* Pointers past the first page are probably too rare */ + /* to add them to the cache. We don't. */ + /* And correctness relies on the fact that we don't. */ + } else { + if (hhdr == 0) { + GC_ADD_TO_BLACK_LIST_NORMAL(p, source); + } + return 0; + } + } else { + if (HBLK_IS_FREE(hhdr)) { + GC_ADD_TO_BLACK_LIST_NORMAL(p, source); + return 0; + } else { + hce -> block_addr = (word)(p) >> LOG_HBLKSIZE; + hce -> hce_hdr = hhdr; + return hhdr; + } + } +} + +/* Routines to dynamically allocate collector data structures that will */ +/* never be freed. */ + +static ptr_t scratch_free_ptr = 0; + +/* GC_scratch_last_end_ptr is end point of last obtained scratch area. */ +/* GC_scratch_end_ptr is end point of current scratch area. */ + +GC_INNER ptr_t GC_scratch_alloc(size_t bytes) +{ + ptr_t result = scratch_free_ptr; + size_t bytes_to_get; + + bytes = ROUNDUP_GRANULE_SIZE(bytes); + for (;;) { + scratch_free_ptr += bytes; + if ((word)scratch_free_ptr <= (word)GC_scratch_end_ptr) { + /* Unallocated space of scratch buffer has enough size. */ + return result; + } + + if (bytes >= MINHINCR * HBLKSIZE) { + bytes_to_get = ROUNDUP_PAGESIZE_IF_MMAP(bytes); + result = (ptr_t)GET_MEM(bytes_to_get); + GC_add_to_our_memory(result, bytes_to_get); + /* Undo scratch free area pointer update; get memory directly. */ + scratch_free_ptr -= bytes; + if (result != NULL) { + /* Update end point of last obtained area (needed only */ + /* by GC_register_dynamic_libraries for some targets). */ + GC_scratch_last_end_ptr = result + bytes; + } + return result; + } + + bytes_to_get = ROUNDUP_PAGESIZE_IF_MMAP(MINHINCR * HBLKSIZE); + /* round up for safety */ + result = (ptr_t)GET_MEM(bytes_to_get); + GC_add_to_our_memory(result, bytes_to_get); + if (NULL == result) { + WARN("Out of memory - trying to allocate requested amount" + " (%" WARN_PRIdPTR " bytes)...\n", (word)bytes); + scratch_free_ptr -= bytes; /* Undo free area pointer update */ + bytes_to_get = ROUNDUP_PAGESIZE_IF_MMAP(bytes); + result = (ptr_t)GET_MEM(bytes_to_get); + GC_add_to_our_memory(result, bytes_to_get); + return result; + } + /* Update scratch area pointers and retry. */ + scratch_free_ptr = result; + GC_scratch_end_ptr = scratch_free_ptr + bytes_to_get; + GC_scratch_last_end_ptr = GC_scratch_end_ptr; + } +} + +static hdr * hdr_free_list = 0; + +/* Return an uninitialized header */ +static hdr * alloc_hdr(void) +{ + register hdr * result; + + if (hdr_free_list == 0) { + result = (hdr *)GC_scratch_alloc(sizeof(hdr)); + } else { + result = hdr_free_list; + hdr_free_list = (hdr *) (result -> hb_next); + } + return(result); +} + +GC_INLINE void free_hdr(hdr * hhdr) +{ + hhdr -> hb_next = (struct hblk *) hdr_free_list; + hdr_free_list = hhdr; +} + +#ifdef COUNT_HDR_CACHE_HITS + /* Used for debugging/profiling (the symbols are externally visible). */ + word GC_hdr_cache_hits = 0; + word GC_hdr_cache_misses = 0; +#endif + +GC_INNER void GC_init_headers(void) +{ + register unsigned i; + + GC_all_nils = (bottom_index *)GC_scratch_alloc(sizeof(bottom_index)); + if (GC_all_nils == NULL) { + GC_err_printf("Insufficient memory for GC_all_nils\n"); + EXIT(); + } + BZERO(GC_all_nils, sizeof(bottom_index)); + for (i = 0; i < TOP_SZ; i++) { + GC_top_index[i] = GC_all_nils; + } +} + +/* Make sure that there is a bottom level index block for address addr */ +/* Return FALSE on failure. */ +static GC_bool get_index(word addr) +{ + word hi = (word)(addr) >> (LOG_BOTTOM_SZ + LOG_HBLKSIZE); + bottom_index * r; + bottom_index * p; + bottom_index ** prev; + bottom_index *pi; + +# ifdef HASH_TL + word i = TL_HASH(hi); + bottom_index * old; + + old = p = GC_top_index[i]; + while(p != GC_all_nils) { + if (p -> key == hi) return(TRUE); + p = p -> hash_link; + } + r = (bottom_index *)GC_scratch_alloc(sizeof(bottom_index)); + if (r == 0) return(FALSE); + BZERO(r, sizeof (bottom_index)); + r -> hash_link = old; + GC_top_index[i] = r; +# else + if (GC_top_index[hi] != GC_all_nils) return(TRUE); + r = (bottom_index *)GC_scratch_alloc(sizeof(bottom_index)); + if (r == 0) return(FALSE); + GC_top_index[hi] = r; + BZERO(r, sizeof (bottom_index)); +# endif + r -> key = hi; + /* Add it to the list of bottom indices */ + prev = &GC_all_bottom_indices; /* pointer to p */ + pi = 0; /* bottom_index preceding p */ + while ((p = *prev) != 0 && p -> key < hi) { + pi = p; + prev = &(p -> asc_link); + } + r -> desc_link = pi; + if (0 == p) { + GC_all_bottom_indices_end = r; + } else { + p -> desc_link = r; + } + r -> asc_link = p; + *prev = r; + return(TRUE); +} + +/* Install a header for block h. */ +/* The header is uninitialized. */ +/* Returns the header or 0 on failure. */ +GC_INNER struct hblkhdr * GC_install_header(struct hblk *h) +{ + hdr * result; + + if (!get_index((word) h)) return(0); + result = alloc_hdr(); + if (result) { + SET_HDR(h, result); +# ifdef USE_MUNMAP + result -> hb_last_reclaimed = (unsigned short)GC_gc_no; +# endif + } + return(result); +} + +/* Set up forwarding counts for block h of size sz */ +GC_INNER GC_bool GC_install_counts(struct hblk *h, size_t sz/* bytes */) +{ + struct hblk * hbp; + + for (hbp = h; (word)hbp < (word)h + sz; hbp += BOTTOM_SZ) { + if (!get_index((word) hbp)) return(FALSE); + } + if (!get_index((word)h + sz - 1)) return(FALSE); + for (hbp = h + 1; (word)hbp < (word)h + sz; hbp += 1) { + word i = HBLK_PTR_DIFF(hbp, h); + + SET_HDR(hbp, (hdr *)(i > MAX_JUMP? MAX_JUMP : i)); + } + return(TRUE); +} + +/* Remove the header for block h */ +GC_INNER void GC_remove_header(struct hblk *h) +{ + hdr **ha; + GET_HDR_ADDR(h, ha); + free_hdr(*ha); + *ha = 0; +} + +/* Remove forwarding counts for h */ +GC_INNER void GC_remove_counts(struct hblk *h, size_t sz/* bytes */) +{ + register struct hblk * hbp; + for (hbp = h+1; (word)hbp < (word)h + sz; hbp += 1) { + SET_HDR(hbp, 0); + } +} + +/* Apply fn to all allocated blocks */ +/*VARARGS1*/ +void GC_apply_to_all_blocks(void (*fn)(struct hblk *h, word client_data), + word client_data) +{ + signed_word j; + bottom_index * index_p; + + for (index_p = GC_all_bottom_indices; index_p != 0; + index_p = index_p -> asc_link) { + for (j = BOTTOM_SZ-1; j >= 0;) { + if (!IS_FORWARDING_ADDR_OR_NIL(index_p->index[j])) { + if (!HBLK_IS_FREE(index_p->index[j])) { + (*fn)(((struct hblk *) + (((index_p->key << LOG_BOTTOM_SZ) + (word)j) + << LOG_HBLKSIZE)), + client_data); + } + j--; + } else if (index_p->index[j] == 0) { + j--; + } else { + j -= (signed_word)(index_p->index[j]); + } + } + } +} + +/* Get the next valid block whose address is at least h */ +/* Return 0 if there is none. */ +GC_INNER struct hblk * GC_next_used_block(struct hblk *h) +{ + register bottom_index * bi; + register word j = ((word)h >> LOG_HBLKSIZE) & (BOTTOM_SZ-1); + + GET_BI(h, bi); + if (bi == GC_all_nils) { + register word hi = (word)h >> (LOG_BOTTOM_SZ + LOG_HBLKSIZE); + bi = GC_all_bottom_indices; + while (bi != 0 && bi -> key < hi) bi = bi -> asc_link; + j = 0; + } + while(bi != 0) { + while (j < BOTTOM_SZ) { + hdr * hhdr = bi -> index[j]; + if (IS_FORWARDING_ADDR_OR_NIL(hhdr)) { + j++; + } else { + if (!HBLK_IS_FREE(hhdr)) { + return((struct hblk *) + (((bi -> key << LOG_BOTTOM_SZ) + j) + << LOG_HBLKSIZE)); + } else { + j += divHBLKSZ(hhdr -> hb_sz); + } + } + } + j = 0; + bi = bi -> asc_link; + } + return(0); +} + +/* Get the last (highest address) block whose address is */ +/* at most h. Return 0 if there is none. */ +/* Unlike the above, this may return a free block. */ +GC_INNER struct hblk * GC_prev_block(struct hblk *h) +{ + register bottom_index * bi; + register signed_word j = ((word)h >> LOG_HBLKSIZE) & (BOTTOM_SZ-1); + + GET_BI(h, bi); + if (bi == GC_all_nils) { + register word hi = (word)h >> (LOG_BOTTOM_SZ + LOG_HBLKSIZE); + bi = GC_all_bottom_indices_end; + while (bi != 0 && bi -> key > hi) bi = bi -> desc_link; + j = BOTTOM_SZ - 1; + } + while(bi != 0) { + while (j >= 0) { + hdr * hhdr = bi -> index[j]; + if (0 == hhdr) { + --j; + } else if (IS_FORWARDING_ADDR_OR_NIL(hhdr)) { + j -= (signed_word)hhdr; + } else { + return((struct hblk *) + (((bi -> key << LOG_BOTTOM_SZ) + j) + << LOG_HBLKSIZE)); + } + } + j = BOTTOM_SZ - 1; + bi = bi -> desc_link; + } + return(0); +} diff --git a/ia64_save_regs_in_stack.s b/ia64_save_regs_in_stack.s new file mode 100644 index 0000000..2b81edf --- /dev/null +++ b/ia64_save_regs_in_stack.s @@ -0,0 +1,11 @@ + .text + .align 16 + .global GC_save_regs_in_stack + .proc GC_save_regs_in_stack +GC_save_regs_in_stack: + .body + flushrs + ;; + mov r8=ar.bsp + br.ret.sptk.few rp + .endp GC_save_regs_in_stack diff --git a/include/config.h.in b/include/config.h.in new file mode 100644 index 0000000..b43c1cc --- /dev/null +++ b/include/config.h.in @@ -0,0 +1,283 @@ +/* include/config.h.in. Generated from configure.ac by autoheader. */ + +/* Define to recognise all pointers to the interior of objects. */ +#undef ALL_INTERIOR_POINTERS + +/* See doc/README.macros. */ +#undef DARWIN_DONT_PARSE_STACK + +/* Define to force debug headers on all objects. */ +#undef DBG_HDRS_ALL + +/* Define to enable support for DB/UX threads. */ +#undef DGUX_THREADS + +/* Define to enable eCos target support. */ +#undef ECOS + +/* Wine getenv may not return NULL for missing entry. */ +#undef EMPTY_GETENV_RESULTS + +/* Define to enable alternative finalization interface. */ +#undef ENABLE_DISCLAIM + +/* Define to support IBM AIX threads. */ +#undef GC_AIX_THREADS + +/* Define to enable internal debug assertions. */ +#undef GC_ASSERTIONS + +/* Define to enable atomic uncollectible allocation. */ +#undef GC_ATOMIC_UNCOLLECTABLE + +/* Define to support Darwin pthreads. */ +#undef GC_DARWIN_THREADS + +/* Define to enable support for DB/UX threads on i386. */ +#undef GC_DGUX386_THREADS + +/* Define to build dynamic libraries with only API symbols exposed. */ +#undef GC_DLL + +/* Define to turn on GC_suspend_thread support. */ +#undef GC_ENABLE_SUSPEND_THREAD + +/* Define to support FreeBSD pthreads. */ +#undef GC_FREEBSD_THREADS + +/* Define to include support for gcj. */ +#undef GC_GCJ_SUPPORT + +/* Define to support GNU pthreads. */ +#undef GC_GNU_THREADS + +/* Define if backtrace information is supported. */ +#undef GC_HAVE_BUILTIN_BACKTRACE + +/* Define to support HP/UX 11 pthreads. */ +#undef GC_HPUX_THREADS + +/* Enable Win32 DllMain-based approach of threads registering. */ +#undef GC_INSIDE_DLL + +/* Define to support Irix pthreads. */ +#undef GC_IRIX_THREADS + +/* Define to support pthreads on Linux. */ +#undef GC_LINUX_THREADS + +/* Missing execinfo.h header */ +#undef GC_MISSING_EXECINFO_H + +/* Define to support NetBSD pthreads. */ +#undef GC_NETBSD_THREADS + +/* Define to support OpenBSD pthreads. */ +#undef GC_OPENBSD_THREADS + +/* Define to support Tru64 pthreads. */ +#undef GC_OSF1_THREADS + +/* Read environment variables from the GC 'env' file. */ +#undef GC_READ_ENV_FILE + +/* Define to support rtems-pthreads. */ +#undef GC_RTEMS_PTHREADS + +/* Define to support Solaris pthreads. */ +#undef GC_SOLARIS_THREADS + +/* Define to support platform-specific threads. */ +#undef GC_THREADS + +/* Explicitly prefix exported/imported WINAPI symbols with '_'. */ +#undef GC_UNDERSCORE_STDCALL + +/* Force the GC to use signals based on SIGRTMIN+k. */ +#undef GC_USESIGRT_SIGNALS + +/* See doc/README.macros. */ +#undef GC_USE_DLOPEN_WRAP + +/* The major version number of this GC release. */ +#undef GC_VERSION_MAJOR + +/* The micro version number of this GC release. */ +#undef GC_VERSION_MICRO + +/* The minor version number of this GC release. */ +#undef GC_VERSION_MINOR + +/* Define to support pthreads-win32 or winpthreads. */ +#undef GC_WIN32_PTHREADS + +/* Define to support Win32 threads. */ +#undef GC_WIN32_THREADS + +/* Define to install pthread_atfork() handlers by default. */ +#undef HANDLE_FORK + +/* Define to use 'dladdr' function. */ +#undef HAVE_DLADDR + +/* Define to 1 if you have the header file. */ +#undef HAVE_DLFCN_H + +/* Define if 'dl_iterate_phdr' function is available. */ +#undef HAVE_DL_ITERATE_PHDR + +/* Define to 1 if you have the header file. */ +#undef HAVE_EXECINFO_H + +/* Define to 1 if you have the `getcontext' function. */ +#undef HAVE_GETCONTEXT + +/* Define to 1 if you have the header file. */ +#undef HAVE_INTTYPES_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_MEMORY_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDINT_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDLIB_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STRINGS_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STRING_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_STAT_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_TYPES_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_UNISTD_H + +/* See doc/README.macros. */ +#undef JAVA_FINALIZATION + +/* Define to save back-pointers in debugging headers. */ +#undef KEEP_BACK_PTRS + +/* Define to optimize for large heaps or root sets. */ +#undef LARGE_CONFIG + +/* Define to the sub-directory where libtool stores uninstalled libraries. */ +#undef LT_OBJDIR + +/* See doc/README.macros. */ +#undef MAKE_BACK_GRAPH + +/* Number of GC cycles to wait before unmapping an unused block. */ +#undef MUNMAP_THRESHOLD + +/* Define to not use system clock (cross compiling). */ +#undef NO_CLOCK + +/* Disable debugging, like GC_dump and its callees. */ +#undef NO_DEBUGGING + +/* Define to make the collector not allocate executable memory by default. */ +#undef NO_EXECUTE_PERMISSION + +/* Missing getcontext() */ +#undef NO_GETCONTEXT + +/* Prohibit installation of pthread_atfork() handlers. */ +#undef NO_HANDLE_FORK + +/* Name of package */ +#undef PACKAGE + +/* Define to the address where bug reports for this package should be sent. */ +#undef PACKAGE_BUGREPORT + +/* Define to the full name of this package. */ +#undef PACKAGE_NAME + +/* Define to the full name and version of this package. */ +#undef PACKAGE_STRING + +/* Define to the one symbol short name of this package. */ +#undef PACKAGE_TARNAME + +/* Define to the home page for this package. */ +#undef PACKAGE_URL + +/* Define to the version of this package. */ +#undef PACKAGE_VERSION + +/* Define to enable parallel marking. */ +#undef PARALLEL_MARK + +/* If defined, redirect free to this function. */ +#undef REDIRECT_FREE + +/* If defined, redirect malloc to this function. */ +#undef REDIRECT_MALLOC + +/* If defined, redirect GC_realloc to this function. */ +#undef REDIRECT_REALLOC + +/* The number of caller frames saved when allocating with the debugging API. + */ +#undef SAVE_CALL_COUNT + +/* Shorten the headers to minimize object size at the expense of checking for + writes past the end (see doc/README.macros). */ +#undef SHORT_DBG_HDRS + +/* Define to tune the collector for small heap sizes. */ +#undef SMALL_CONFIG + +/* See the comment in gcconfig.h. */ +#undef SOLARIS25_PROC_VDB_BUG_FIXED + +/* Define to 1 if you have the ANSI C header files. */ +#undef STDC_HEADERS + +/* Define to work around a Solaris 5.3 bug (see dyn_load.c). */ +#undef SUNOS53_SHARED_LIB + +/* Define to enable thread-local allocation optimization. */ +#undef THREAD_LOCAL_ALLOC + +/* Use Unicode (W) variant of Win32 API instead of ASCII (A) one. */ +#undef UNICODE + +/* Define to use of compiler-support for thread-local variables. */ +#undef USE_COMPILER_TLS + +/* Define to use mmap instead of sbrk to expand the heap. */ +#undef USE_MMAP + +/* Define to return memory to OS with munmap calls (see doc/README.macros). */ +#undef USE_MUNMAP + +/* Define to use Win32 VirtualAlloc (instead of sbrk or mmap) to expand the + heap. */ +#undef USE_WINALLOC + +/* Version number of package */ +#undef VERSION + +/* The POSIX feature macro. */ +#undef _POSIX_C_SOURCE + +/* Indicates the use of pthreads (NetBSD). */ +#undef _PTHREADS + +/* Required define if using POSIX threads. */ +#undef _REENTRANT + +/* Define to `__inline__' or `__inline' if that's what the C compiler + calls it, or to nothing if 'inline' is not supported under any name. */ +#ifndef __cplusplus +#undef inline +#endif diff --git a/include/cord.h b/include/cord.h new file mode 100644 index 0000000..adac772 --- /dev/null +++ b/include/cord.h @@ -0,0 +1,354 @@ +/* + * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* + * Cords are immutable character strings. A number of operations + * on long cords are much more efficient than their strings.h counterpart. + * In particular, concatenation takes constant time independent of the length + * of the arguments. (Cords are represented as trees, with internal + * nodes representing concatenation and leaves consisting of either C + * strings or a functional description of the string.) + * + * The following are reasonable applications of cords. They would perform + * unacceptably if C strings were used: + * - A compiler that produces assembly language output by repeatedly + * concatenating instructions onto a cord representing the output file. + * - A text editor that converts the input file to a cord, and then + * performs editing operations by producing a new cord representing + * the file after each character change (and keeping the old ones in an + * edit history) + * + * For optimal performance, cords should be built by + * concatenating short sections. + * This interface is designed for maximum compatibility with C strings. + * ASCII NUL characters may be embedded in cords using CORD_from_fn. + * This is handled correctly, but CORD_to_char_star will produce a string + * with embedded NULs when given such a cord. + * + * This interface is fairly big, largely for performance reasons. + * The most basic constants and functions: + * + * CORD - the type of a cord; + * CORD_EMPTY - empty cord; + * CORD_len(cord) - length of a cord; + * CORD_cat(cord1,cord2) - concatenation of two cords; + * CORD_substr(cord, start, len) - substring (or subcord); + * CORD_pos i; CORD_FOR(i, cord) { ... CORD_pos_fetch(i) ... } - + * examine each character in a cord. CORD_pos_fetch(i) is the char. + * CORD_fetch(int i) - Retrieve i'th character (slowly). + * CORD_cmp(cord1, cord2) - compare two cords. + * CORD_from_file(FILE * f) - turn a read-only file into a cord. + * CORD_to_char_star(cord) - convert to C string. + * (Non-NULL C constant strings are cords.) + * CORD_printf (etc.) - cord version of printf. Use %r for cords. + */ +#ifndef CORD_H +#define CORD_H + +#include +#include + +#if defined(GC_DLL) && !defined(CORD_NOT_DLL) + /* Same as for GC_API in gc_config_macros.h. */ +# ifdef CORD_BUILD +# if defined(__MINGW32__) || defined(__CEGCC__) +# define CORD_API __declspec(dllexport) +# elif defined(_MSC_VER) || defined(__DMC__) || defined(__BORLANDC__) \ + || defined(__CYGWIN__) || defined(__WATCOMC__) +# define CORD_API extern __declspec(dllexport) +# elif defined(__GNUC__) && !defined(GC_NO_VISIBILITY) \ + && (__GNUC__ >= 4 || defined(GC_VISIBILITY_HIDDEN_SET)) + /* Only matters if used in conjunction with -fvisibility=hidden option. */ +# define CORD_API extern __attribute__((__visibility__("default"))) +# endif +# else +# if defined(__MINGW32__) || defined(__CEGCC__) || defined(_MSC_VER) \ + || defined(__DMC__) || defined(__BORLANDC__) || defined(__CYGWIN__) +# define CORD_API __declspec(dllimport) +# elif defined(__WATCOMC__) +# define CORD_API extern __declspec(dllimport) +# endif +# endif /* !CORD_BUILD */ +#endif /* GC_DLL */ + +#ifndef CORD_API +# define CORD_API extern +#endif + +/* Cords have type const char *. This is cheating quite a bit, and not */ +/* 100% portable. But it means that nonempty character string */ +/* constants may be used as cords directly, provided the string is */ +/* never modified in place. The empty cord is represented by, and */ +/* can be written as, 0. */ + +typedef const char * CORD; + +/* An empty cord is always represented as nil */ +#define CORD_EMPTY 0 + +/* Is a nonempty cord represented as a C string? */ +#define CORD_IS_STRING(s) (*(s) != '\0') + +/* Concatenate two cords. If the arguments are C strings, they may */ +/* not be subsequently altered. */ +CORD_API CORD CORD_cat(CORD x, CORD y); + +/* Concatenate a cord and a C string with known length. Except for the */ +/* empty string case, this is a special case of CORD_cat. Since the */ +/* length is known, it can be faster. */ +/* The string y is shared with the resulting CORD. Hence it should */ +/* not be altered by the caller. */ +CORD_API CORD CORD_cat_char_star(CORD x, const char * y, size_t leny); + +/* Compute the length of a cord */ +CORD_API size_t CORD_len(CORD x); + +/* Cords may be represented by functions defining the ith character */ +typedef char (* CORD_fn)(size_t i, void * client_data); + +/* Turn a functional description into a cord. */ +CORD_API CORD CORD_from_fn(CORD_fn fn, void * client_data, size_t len); + +/* Return the substring (subcord really) of x with length at most n, */ +/* starting at position i. (The initial character has position 0.) */ +CORD_API CORD CORD_substr(CORD x, size_t i, size_t n); + +/* Return the argument, but rebalanced to allow more efficient */ +/* character retrieval, substring operations, and comparisons. */ +/* This is useful only for cords that were built using repeated */ +/* concatenation. Guarantees log time access to the result, unless */ +/* x was obtained through a large number of repeated substring ops */ +/* or the embedded functional descriptions take longer to evaluate. */ +/* May reallocate significant parts of the cord. The argument is not */ +/* modified; only the result is balanced. */ +CORD_API CORD CORD_balance(CORD x); + +/* The following traverse a cord by applying a function to each */ +/* character. This is occasionally appropriate, especially where */ +/* speed is crucial. But, since C doesn't have nested functions, */ +/* clients of this sort of traversal are clumsy to write. Consider */ +/* the functions that operate on cord positions instead. */ + +/* Function to iteratively apply to individual characters in cord. */ +typedef int (* CORD_iter_fn)(char c, void * client_data); + +/* Function to apply to substrings of a cord. Each substring is a */ +/* a C character string, not a general cord. */ +typedef int (* CORD_batched_iter_fn)(const char * s, void * client_data); +#define CORD_NO_FN ((CORD_batched_iter_fn)0) + +/* Apply f1 to each character in the cord, in ascending order, */ +/* starting at position i. If */ +/* f2 is not CORD_NO_FN, then multiple calls to f1 may be replaced by */ +/* a single call to f2. The parameter f2 is provided only to allow */ +/* some optimization by the client. This terminates when the right */ +/* end of this string is reached, or when f1 or f2 return != 0. In the */ +/* latter case CORD_iter returns != 0. Otherwise it returns 0. */ +/* The specified value of i must be < CORD_len(x). */ +CORD_API int CORD_iter5(CORD x, size_t i, CORD_iter_fn f1, + CORD_batched_iter_fn f2, void * client_data); + +/* A simpler version that starts at 0, and without f2: */ +CORD_API int CORD_iter(CORD x, CORD_iter_fn f1, void * client_data); +#define CORD_iter(x, f1, cd) CORD_iter5(x, 0, f1, CORD_NO_FN, cd) + +/* Similar to CORD_iter5, but end-to-beginning. No provisions for */ +/* CORD_batched_iter_fn. */ +CORD_API int CORD_riter4(CORD x, size_t i, CORD_iter_fn f1, void * client_data); + +/* A simpler version that starts at the end: */ +CORD_API int CORD_riter(CORD x, CORD_iter_fn f1, void * client_data); + +/* Functions that operate on cord positions. The easy way to traverse */ +/* cords. A cord position is logically a pair consisting of a cord */ +/* and an index into that cord. But it is much faster to retrieve a */ +/* character based on a position than on an index. Unfortunately, */ +/* positions are big (order of a few 100 bytes), so allocate them with */ +/* caution. */ +/* Things in cord_pos.h should be treated as opaque, except as */ +/* described below. Also note that */ +/* CORD_pos_fetch, CORD_next and CORD_prev have both macro and function */ +/* definitions. The former may evaluate their argument more than once. */ +#include "cord_pos.h" + +/* + Visible definitions from above: + + typedef CORD_pos[1]; + + * Extract the cord from a position: + CORD CORD_pos_to_cord(CORD_pos p); + + * Extract the current index from a position: + size_t CORD_pos_to_index(CORD_pos p); + + * Fetch the character located at the given position: + char CORD_pos_fetch(CORD_pos p); + + * Initialize the position to refer to the given cord and index. + * Note that this is the most expensive function on positions: + void CORD_set_pos(CORD_pos p, CORD x, size_t i); + + * Advance the position to the next character. + * P must be initialized and valid. + * Invalidates p if past end: + void CORD_next(CORD_pos p); + + * Move the position to the preceding character. + * P must be initialized and valid. + * Invalidates p if past beginning: + void CORD_prev(CORD_pos p); + + * Is the position valid, i.e. inside the cord? + int CORD_pos_valid(CORD_pos p); +*/ +#define CORD_FOR(pos, cord) \ + for (CORD_set_pos(pos, cord, 0); CORD_pos_valid(pos); CORD_next(pos)) + + +/* An out of memory handler to call. May be supplied by client. */ +/* Must not return. */ +extern void (* CORD_oom_fn)(void); + +/* Dump the representation of x to stdout in an implementation defined */ +/* manner. Intended for debugging only. */ +CORD_API void CORD_dump(CORD x); + +/* The following could easily be implemented by the client. They are */ +/* provided in cordxtra.c for convenience. */ + +/* Concatenate a character to the end of a cord. */ +CORD_API CORD CORD_cat_char(CORD x, char c); + +/* Concatenate n cords. */ +CORD_API CORD CORD_catn(int n, /* CORD */ ...); + +/* Return the character in CORD_substr(x, i, 1) */ +CORD_API char CORD_fetch(CORD x, size_t i); + +/* Return < 0, 0, or > 0, depending on whether x < y, x = y, x > y */ +CORD_API int CORD_cmp(CORD x, CORD y); + +/* A generalization that takes both starting positions for the */ +/* comparison, and a limit on the number of characters to be compared. */ +CORD_API int CORD_ncmp(CORD x, size_t x_start, CORD y, size_t y_start, + size_t len); + +/* Find the first occurrence of s in x at position start or later. */ +/* Return the position of the first character of s in x, or */ +/* CORD_NOT_FOUND if there is none. */ +CORD_API size_t CORD_str(CORD x, size_t start, CORD s); + +/* Return a cord consisting of i copies of (possibly NUL) c. Dangerous */ +/* in conjunction with CORD_to_char_star. */ +/* The resulting representation takes constant space, independent of i. */ +CORD_API CORD CORD_chars(char c, size_t i); +#define CORD_nul(i) CORD_chars('\0', (i)) + +/* Turn a file into cord. The file must be seekable. Its contents */ +/* must remain constant. The file may be accessed as an immediate */ +/* result of this call and/or as a result of subsequent accesses to */ +/* the cord. Short files are likely to be immediately read, but */ +/* long files are likely to be read on demand, possibly relying on */ +/* stdio for buffering. */ +/* We must have exclusive access to the descriptor f, i.e. we may */ +/* read it at any time, and expect the file pointer to be */ +/* where we left it. Normally this should be invoked as */ +/* CORD_from_file(fopen(...)) */ +/* CORD_from_file arranges to close the file descriptor when it is no */ +/* longer needed (e.g. when the result becomes inaccessible). */ +/* The file f must be such that ftell reflects the actual character */ +/* position in the file, i.e. the number of characters that can be */ +/* or were read with fread. On UNIX systems this is always true. On */ +/* MS Windows systems, f must be opened in binary mode. */ +CORD_API CORD CORD_from_file(FILE * f); + +/* Equivalent to the above, except that the entire file will be read */ +/* and the file pointer will be closed immediately. */ +/* The binary mode restriction from above does not apply. */ +CORD_API CORD CORD_from_file_eager(FILE * f); + +/* Equivalent to the above, except that the file will be read on demand.*/ +/* The binary mode restriction applies. */ +CORD_API CORD CORD_from_file_lazy(FILE * f); + +/* Turn a cord into a C string. The result shares no structure with */ +/* x, and is thus modifiable. */ +CORD_API char * CORD_to_char_star(CORD x); + +/* Turn a C string into a CORD. The C string is copied, and so may */ +/* subsequently be modified. */ +CORD_API CORD CORD_from_char_star(const char *s); + +/* Identical to the above, but the result may share structure with */ +/* the argument and is thus not modifiable. */ +CORD_API const char * CORD_to_const_char_star(CORD x); + +/* Write a cord to a file, starting at the current position. No */ +/* trailing NULs are newlines are added. */ +/* Returns EOF if a write error occurs, 1 otherwise. */ +CORD_API int CORD_put(CORD x, FILE * f); + +/* "Not found" result for the following two functions. */ +#define CORD_NOT_FOUND ((size_t)(-1)) + +/* A vague analog of strchr. Returns the position (an integer, not */ +/* a pointer) of the first occurrence of (char) c inside x at position */ +/* i or later. The value i must be < CORD_len(x). */ +CORD_API size_t CORD_chr(CORD x, size_t i, int c); + +/* A vague analog of strrchr. Returns index of the last occurrence */ +/* of (char) c inside x at position i or earlier. The value i */ +/* must be < CORD_len(x). */ +CORD_API size_t CORD_rchr(CORD x, size_t i, int c); + + +/* The following are also not primitive, but are implemented in */ +/* cordprnt.c. They provide functionality similar to the ANSI C */ +/* functions with corresponding names, but with the following */ +/* additions and changes: */ +/* 1. A %r conversion specification specifies a CORD argument. Field */ +/* width, precision, etc. have the same semantics as for %s. */ +/* (Note that %c, %C, and %S were already taken.) */ +/* 2. The format string is represented as a CORD. */ +/* 3. CORD_sprintf and CORD_vsprintf assign the result through the 1st */ +/* argument. Unlike their ANSI C versions, there is no need to guess */ +/* the correct buffer size. */ +/* 4. Most of the conversions are implement through the native */ +/* vsprintf. Hence they are usually no faster, and */ +/* idiosyncrasies of the native printf are preserved. However, */ +/* CORD arguments to CORD_sprintf and CORD_vsprintf are NOT copied; */ +/* the result shares the original structure. This may make them */ +/* very efficient in some unusual applications. */ +/* The format string is copied. */ +/* All functions return the number of characters generated or -1 on */ +/* error. This complies with the ANSI standard, but is inconsistent */ +/* with some older implementations of sprintf. */ + +/* The implementation of these is probably less portable than the rest */ +/* of this package. */ + +#ifndef CORD_NO_IO + +#include + +CORD_API int CORD_sprintf(CORD * out, CORD format, ...); +CORD_API int CORD_vsprintf(CORD * out, CORD format, va_list args); +CORD_API int CORD_fprintf(FILE * f, CORD format, ...); +CORD_API int CORD_vfprintf(FILE * f, CORD format, va_list args); +CORD_API int CORD_printf(CORD format, ...); +CORD_API int CORD_vprintf(CORD format, va_list args); + +#endif /* CORD_NO_IO */ + +#endif /* CORD_H */ diff --git a/include/cord_pos.h b/include/cord_pos.h new file mode 100644 index 0000000..beaa236 --- /dev/null +++ b/include/cord_pos.h @@ -0,0 +1,120 @@ +/* + * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* This should never be included directly; included only from cord.h. */ +#if !defined(CORD_POSITION_H) && defined(CORD_H) +#define CORD_POSITION_H + +/* The representation of CORD_position. This is private to the */ +/* implementation, but the size is known to clients. Also */ +/* the implementation of some exported macros relies on it. */ +/* Don't use anything defined here and not in cord.h. */ + +# define MAX_DEPTH 48 + /* The maximum depth of a balanced cord + 1. */ + /* We don't let cords get deeper than MAX_DEPTH. */ + +struct CORD_pe { + CORD pe_cord; + size_t pe_start_pos; +}; + +/* A structure describing an entry on the path from the root */ +/* to current position. */ +typedef struct CORD_Pos { + size_t cur_pos; + int path_len; +# define CORD_POS_INVALID (0x55555555) + /* path_len == INVALID <==> position invalid */ + const char *cur_leaf; /* Current leaf, if it is a string. */ + /* If the current leaf is a function, */ + /* then this may point to function_buf */ + /* containing the next few characters. */ + /* Always points to a valid string */ + /* containing the current character */ + /* unless cur_end is 0. */ + size_t cur_start; /* Start position of cur_leaf */ + size_t cur_end; /* Ending position of cur_leaf */ + /* 0 if cur_leaf is invalid. */ + struct CORD_pe path[MAX_DEPTH + 1]; + /* path[path_len] is the leaf corresponding to cur_pos */ + /* path[0].pe_cord is the cord we point to. */ +# define FUNCTION_BUF_SZ 8 + char function_buf[FUNCTION_BUF_SZ]; /* Space for next few chars */ + /* from function node. */ +} CORD_pos[1]; + +/* Extract the cord from a position: */ +CORD_API CORD CORD_pos_to_cord(CORD_pos p); + +/* Extract the current index from a position: */ +CORD_API size_t CORD_pos_to_index(CORD_pos p); + +/* Fetch the character located at the given position: */ +CORD_API char CORD_pos_fetch(CORD_pos p); + +/* Initialize the position to refer to the give cord and index. */ +/* Note that this is the most expensive function on positions: */ +CORD_API void CORD_set_pos(CORD_pos p, CORD x, size_t i); + +/* Advance the position to the next character. */ +/* P must be initialized and valid. */ +/* Invalidates p if past end: */ +CORD_API void CORD_next(CORD_pos p); + +/* Move the position to the preceding character. */ +/* P must be initialized and valid. */ +/* Invalidates p if past beginning: */ +CORD_API void CORD_prev(CORD_pos p); + +/* Is the position valid, i.e. inside the cord? */ +CORD_API int CORD_pos_valid(CORD_pos p); + +CORD_API char CORD__pos_fetch(CORD_pos); +CORD_API void CORD__next(CORD_pos); +CORD_API void CORD__prev(CORD_pos); + +#define CORD_pos_fetch(p) \ + (((p)[0].cur_end != 0)? \ + (p)[0].cur_leaf[(p)[0].cur_pos - (p)[0].cur_start] \ + : CORD__pos_fetch(p)) + +#define CORD_next(p) \ + (((p)[0].cur_pos + 1 < (p)[0].cur_end)? \ + (p)[0].cur_pos++ \ + : (CORD__next(p), 0)) + +#define CORD_prev(p) \ + (((p)[0].cur_end != 0 && (p)[0].cur_pos > (p)[0].cur_start)? \ + (p)[0].cur_pos-- \ + : (CORD__prev(p), 0)) + +#define CORD_pos_to_index(p) ((p)[0].cur_pos) + +#define CORD_pos_to_cord(p) ((p)[0].path[0].pe_cord) + +#define CORD_pos_valid(p) ((p)[0].path_len != CORD_POS_INVALID) + +/* Some grubby stuff for performance-critical friends: */ +#define CORD_pos_chars_left(p) ((long)((p)[0].cur_end) - (long)((p)[0].cur_pos)) + /* Number of characters in cache. <= 0 ==> none */ + +#define CORD_pos_advance(p,n) ((p)[0].cur_pos += (n) - 1, CORD_next(p)) + /* Advance position by n characters */ + /* 0 < n < CORD_pos_chars_left(p) */ + +#define CORD_pos_cur_char_addr(p) \ + (p)[0].cur_leaf + ((p)[0].cur_pos - (p)[0].cur_start) + /* address of current character in cache. */ + +#endif diff --git a/include/ec.h b/include/ec.h new file mode 100644 index 0000000..30806ed --- /dev/null +++ b/include/ec.h @@ -0,0 +1,68 @@ +# ifndef EC_H +# define EC_H + +# ifndef CORD_H +# include "cord.h" +# endif + +/* Extensible cords are strings that may be destructively appended to. */ +/* They allow fast construction of cords from characters that are */ +/* being read from a stream. */ +/* + * A client might look like: + * + * { + * CORD_ec x; + * CORD result; + * char c; + * FILE *f; + * + * ... + * CORD_ec_init(x); + * while(...) { + * c = getc(f); + * ... + * CORD_ec_append(x, c); + * } + * result = CORD_balance(CORD_ec_to_cord(x)); + * + * If a C string is desired as the final result, the call to CORD_balance + * may be replaced by a call to CORD_to_char_star. + */ + +# ifndef CORD_BUFSZ +# define CORD_BUFSZ 128 +# endif + +typedef struct CORD_ec_struct { + CORD ec_cord; + char * ec_bufptr; + char ec_buf[CORD_BUFSZ+1]; +} CORD_ec[1]; + +/* This structure represents the concatenation of ec_cord with */ +/* ec_buf[0 ... (ec_bufptr-ec_buf-1)] */ + +/* Flush the buffer part of the extended chord into ec_cord. */ +/* Note that this is almost the only real function, and it is */ +/* implemented in 6 lines in cordxtra.c */ +void CORD_ec_flush_buf(CORD_ec x); + +/* Convert an extensible cord to a cord. */ +# define CORD_ec_to_cord(x) (CORD_ec_flush_buf(x), (x)[0].ec_cord) + +/* Initialize an extensible cord. */ +#define CORD_ec_init(x) \ + ((x)[0].ec_cord = 0, (void)((x)[0].ec_bufptr = (x)[0].ec_buf)) + +/* Append a character to an extensible cord. */ +#define CORD_ec_append(x, c) \ + (((x)[0].ec_bufptr == (x)[0].ec_buf + CORD_BUFSZ ? \ + (CORD_ec_flush_buf(x), 0) : 0), \ + (void)(*(x)[0].ec_bufptr++ = (c))) + +/* Append a cord to an extensible cord. Structure remains shared with */ +/* original. */ +void CORD_ec_append_cord(CORD_ec x, CORD s); + +# endif /* EC_H */ diff --git a/include/extra/gc.h b/include/extra/gc.h new file mode 100644 index 0000000..55ae4c6 --- /dev/null +++ b/include/extra/gc.h @@ -0,0 +1,2 @@ +/* This file is installed for backward compatibility. */ +#include diff --git a/include/extra/gc_cpp.h b/include/extra/gc_cpp.h new file mode 100644 index 0000000..36669f9 --- /dev/null +++ b/include/extra/gc_cpp.h @@ -0,0 +1,2 @@ +/* This file is installed for backward compatibility. */ +#include diff --git a/include/gc.h b/include/gc.h new file mode 100644 index 0000000..fb01b6f --- /dev/null +++ b/include/gc.h @@ -0,0 +1,1971 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. + * Copyright 1996-1999 by Silicon Graphics. All rights reserved. + * Copyright 1999 by Hewlett-Packard Company. All rights reserved. + * Copyright (C) 2007 Free Software Foundation, Inc + * Copyright (c) 2000-2011 by Hewlett-Packard Development Company. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* + * Note that this defines a large number of tuning hooks, which can + * safely be ignored in nearly all cases. For normal use it suffices + * to call only GC_MALLOC and perhaps GC_REALLOC. + * For better performance, also look at GC_MALLOC_ATOMIC, and + * GC_enable_incremental. If you need an action to be performed + * immediately before an object is collected, look at GC_register_finalizer. + * If you are using Solaris threads, look at the end of this file. + * Everything else is best ignored unless you encounter performance + * problems. + */ + +#ifndef GC_H +#define GC_H + +/* Help debug mixed up preprocessor symbols. */ +#if (defined(WIN64) && !defined(_WIN64)) && defined(_MSC_VER) +#pragma message("Warning: Expecting _WIN64 for x64 targets! Notice the leading underscore!") +#endif + +#include "gc_version.h" + /* Define version numbers here to allow test on build machine */ + /* for cross-builds. Note that this defines the header */ + /* version number, which may or may not match that of the */ + /* dynamic library. GC_get_version() can be used to obtain */ + /* the latter. */ + +#include "gc_config_macros.h" + +#ifdef __cplusplus + extern "C" { +#endif + +typedef void * GC_PTR; /* preserved only for backward compatibility */ + +/* Define word and signed_word to be unsigned and signed types of the */ +/* size as char * or void *. There seems to be no way to do this */ +/* even semi-portably. The following is probably no better/worse */ +/* than almost anything else. */ +/* The ANSI standard suggests that size_t and ptrdiff_t might be */ +/* better choices. But those had incorrect definitions on some older */ +/* systems. Notably "typedef int size_t" is WRONG. */ +#ifdef _WIN64 +# if defined(__int64) && !defined(CPPCHECK) + typedef unsigned __int64 GC_word; + typedef __int64 GC_signed_word; +# else + typedef unsigned long long GC_word; + typedef long long GC_signed_word; +# endif +#else + typedef unsigned long GC_word; + typedef long GC_signed_word; +#endif + +/* Get the GC library version. The returned value is a constant in the */ +/* form: ((version_major<<16) | (version_minor<<8) | version_micro). */ +GC_API unsigned GC_CALL GC_get_version(void); + +/* Public read-only variables */ +/* The supplied getter functions are preferred for new code. */ + +GC_API GC_ATTR_DEPRECATED GC_word GC_gc_no; + /* Counter incremented per collection. */ + /* Includes empty GCs at startup. */ +GC_API GC_word GC_CALL GC_get_gc_no(void); + /* GC_get_gc_no() is unsynchronized, so */ + /* it requires GC_call_with_alloc_lock() to */ + /* avoid data races on multiprocessors. */ + +#ifdef GC_THREADS + GC_API GC_ATTR_DEPRECATED int GC_parallel; + /* GC is parallelized for performance on */ + /* multiprocessors. Currently set only */ + /* implicitly if collector is built with */ + /* PARALLEL_MARK defined and if either: */ + /* Env variable GC_NPROC is set to > 1, or */ + /* GC_NPROC is not set and this is an MP. */ + /* If GC_parallel is on (non-zero), incremental */ + /* collection is only partially functional, */ + /* and may not be desirable. The getter does */ + /* not use or need synchronization (i.e. */ + /* acquiring the GC lock). Starting from */ + /* GC v7.3, GC_parallel value is equal to the */ + /* number of marker threads minus one (i.e. */ + /* number of existing parallel marker threads */ + /* excluding the initiating one). */ + GC_API int GC_CALL GC_get_parallel(void); +#endif + + +/* Public R/W variables */ +/* The supplied setter and getter functions are preferred for new code. */ + +typedef void * (GC_CALLBACK * GC_oom_func)(size_t /* bytes_requested */); +GC_API GC_ATTR_DEPRECATED GC_oom_func GC_oom_fn; + /* When there is insufficient memory to satisfy */ + /* an allocation request, we return */ + /* (*GC_oom_fn)(size). By default this just */ + /* returns NULL. */ + /* If it returns, it must return 0 or a valid */ + /* pointer to a previously allocated heap */ + /* object. GC_oom_fn must not be 0. */ + /* Both the supplied setter and the getter */ + /* acquire the GC lock (to avoid data races). */ +GC_API void GC_CALL GC_set_oom_fn(GC_oom_func) GC_ATTR_NONNULL(1); +GC_API GC_oom_func GC_CALL GC_get_oom_fn(void); + +typedef void (GC_CALLBACK * GC_on_heap_resize_proc)(GC_word /* new_size */); +GC_API GC_ATTR_DEPRECATED GC_on_heap_resize_proc GC_on_heap_resize; + /* Invoked when the heap grows or shrinks. */ + /* Called with the world stopped (and the */ + /* allocation lock held). May be 0. */ +GC_API void GC_CALL GC_set_on_heap_resize(GC_on_heap_resize_proc); +GC_API GC_on_heap_resize_proc GC_CALL GC_get_on_heap_resize(void); + /* Both the supplied setter and the getter */ + /* acquire the GC lock (to avoid data races). */ + +typedef enum { + GC_EVENT_START /* COLLECTION */, + GC_EVENT_MARK_START, + GC_EVENT_MARK_END, + GC_EVENT_RECLAIM_START, + GC_EVENT_RECLAIM_END, + GC_EVENT_END /* COLLECTION */, + GC_EVENT_PRE_STOP_WORLD /* STOPWORLD_BEGIN */, + GC_EVENT_POST_STOP_WORLD /* STOPWORLD_END */, + GC_EVENT_PRE_START_WORLD /* STARTWORLD_BEGIN */, + GC_EVENT_POST_START_WORLD /* STARTWORLD_END */, + GC_EVENT_THREAD_SUSPENDED, + GC_EVENT_THREAD_UNSUSPENDED +} GC_EventType; + +typedef void (GC_CALLBACK * GC_on_collection_event_proc)(GC_EventType); + /* Invoked to indicate progress through the */ + /* collection process. Not used for thread */ + /* suspend/resume notifications. Called with */ + /* the GC lock held (or, even, the world */ + /* stopped). May be 0 (means no notifier). */ +GC_API void GC_CALL GC_set_on_collection_event(GC_on_collection_event_proc); +GC_API GC_on_collection_event_proc GC_CALL GC_get_on_collection_event(void); + /* Both the supplied setter and the getter */ + /* acquire the GC lock (to avoid data races). */ + +#ifdef GC_THREADS + typedef void (GC_CALLBACK * GC_on_thread_event_proc)(GC_EventType, + void * /* thread_id */); + /* Invoked when a thread is suspended or */ + /* resumed during collection. Called with the */ + /* GC lock held (and the world stopped */ + /* partially). May be 0 (means no notifier). */ + GC_API void GC_CALL GC_set_on_thread_event(GC_on_thread_event_proc); + GC_API GC_on_thread_event_proc GC_CALL GC_get_on_thread_event(void); + /* Both the supplied setter and the getter */ + /* acquire the GC lock (to avoid data races). */ +#endif + +GC_API GC_ATTR_DEPRECATED int GC_find_leak; + /* Set to true to turn on the leak-finding mode */ + /* (do not actually garbage collect, but simply */ + /* report inaccessible memory that was not */ + /* deallocated with GC_FREE). Initial value */ + /* is determined by FIND_LEAK macro. */ + /* The value should not typically be modified */ + /* after GC initialization (and, thus, it does */ + /* not use or need synchronization). */ +GC_API void GC_CALL GC_set_find_leak(int); +GC_API int GC_CALL GC_get_find_leak(void); + +GC_API GC_ATTR_DEPRECATED int GC_all_interior_pointers; + /* Arrange for pointers to object interiors to */ + /* be recognized as valid. Typically should */ + /* not be changed after GC initialization (in */ + /* case of calling it after the GC is */ + /* initialized, the setter acquires the GC lock */ + /* (to avoid data races). The initial value */ + /* depends on whether the GC is built with */ + /* ALL_INTERIOR_POINTERS macro defined or not. */ + /* Unless DONT_ADD_BYTE_AT_END is defined, this */ + /* also affects whether sizes are increased by */ + /* at least a byte to allow "off the end" */ + /* pointer recognition. Must be only 0 or 1. */ +GC_API void GC_CALL GC_set_all_interior_pointers(int); +GC_API int GC_CALL GC_get_all_interior_pointers(void); + +GC_API GC_ATTR_DEPRECATED int GC_finalize_on_demand; + /* If nonzero, finalizers will only be run in */ + /* response to an explicit GC_invoke_finalizers */ + /* call. The default is determined by whether */ + /* the FINALIZE_ON_DEMAND macro is defined */ + /* when the collector is built. */ + /* The setter and getter are unsynchronized. */ +GC_API void GC_CALL GC_set_finalize_on_demand(int); +GC_API int GC_CALL GC_get_finalize_on_demand(void); + +GC_API GC_ATTR_DEPRECATED int GC_java_finalization; + /* Mark objects reachable from finalizable */ + /* objects in a separate post-pass. This makes */ + /* it a bit safer to use non-topologically- */ + /* ordered finalization. Default value is */ + /* determined by JAVA_FINALIZATION macro. */ + /* Enables register_finalizer_unreachable to */ + /* work correctly. */ + /* The setter and getter are unsynchronized. */ +GC_API void GC_CALL GC_set_java_finalization(int); +GC_API int GC_CALL GC_get_java_finalization(void); + +typedef void (GC_CALLBACK * GC_finalizer_notifier_proc)(void); +GC_API GC_ATTR_DEPRECATED GC_finalizer_notifier_proc GC_finalizer_notifier; + /* Invoked by the collector when there are */ + /* objects to be finalized. Invoked at most */ + /* once per GC cycle. Never invoked unless */ + /* GC_finalize_on_demand is set. */ + /* Typically this will notify a finalization */ + /* thread, which will call GC_invoke_finalizers */ + /* in response. May be 0 (means no notifier). */ + /* Both the supplied setter and the getter */ + /* acquire the GC lock (to avoid data races). */ +GC_API void GC_CALL GC_set_finalizer_notifier(GC_finalizer_notifier_proc); +GC_API GC_finalizer_notifier_proc GC_CALL GC_get_finalizer_notifier(void); + +GC_API +# ifndef GC_DONT_GC + GC_ATTR_DEPRECATED +# endif + int GC_dont_gc; /* != 0 ==> Don't collect. In versions 6.2a1+, */ + /* this overrides explicit GC_gcollect() calls. */ + /* Used as a counter, so that nested enabling */ + /* and disabling work correctly. Should */ + /* normally be updated with GC_enable() and */ + /* GC_disable() calls. Direct assignment to */ + /* GC_dont_gc is deprecated. To check whether */ + /* GC is disabled, GC_is_disabled() is */ + /* preferred for new code. */ + +GC_API GC_ATTR_DEPRECATED int GC_dont_expand; + /* Do not expand the heap unless explicitly */ + /* requested or forced to. The setter and */ + /* getter are unsynchronized. */ +GC_API void GC_CALL GC_set_dont_expand(int); +GC_API int GC_CALL GC_get_dont_expand(void); + +GC_API GC_ATTR_DEPRECATED int GC_use_entire_heap; + /* Causes the non-incremental collector to use the */ + /* entire heap before collecting. This was the only */ + /* option for GC versions < 5.0. This sometimes */ + /* results in more large block fragmentation, since */ + /* very large blocks will tend to get broken up */ + /* during each GC cycle. It is likely to result in a */ + /* larger working set, but lower collection */ + /* frequencies, and hence fewer instructions executed */ + /* in the collector. */ + +GC_API GC_ATTR_DEPRECATED int GC_full_freq; + /* Number of partial collections between */ + /* full collections. Matters only if */ + /* GC_incremental is set. */ + /* Full collections are also triggered if */ + /* the collector detects a substantial */ + /* increase in the number of in-use heap */ + /* blocks. Values in the tens are now */ + /* perfectly reasonable, unlike for */ + /* earlier GC versions. */ + /* The setter and getter are unsynchronized, so */ + /* GC_call_with_alloc_lock() is required to */ + /* avoid data races (if the value is modified */ + /* after the GC is put to multi-threaded mode). */ +GC_API void GC_CALL GC_set_full_freq(int); +GC_API int GC_CALL GC_get_full_freq(void); + +GC_API GC_ATTR_DEPRECATED GC_word GC_non_gc_bytes; + /* Bytes not considered candidates for */ + /* collection. Used only to control scheduling */ + /* of collections. Updated by */ + /* GC_malloc_uncollectable and GC_free. */ + /* Wizards only. */ + /* The setter and getter are unsynchronized, so */ + /* GC_call_with_alloc_lock() is required to */ + /* avoid data races (if the value is modified */ + /* after the GC is put to multi-threaded mode). */ +GC_API void GC_CALL GC_set_non_gc_bytes(GC_word); +GC_API GC_word GC_CALL GC_get_non_gc_bytes(void); + +GC_API GC_ATTR_DEPRECATED int GC_no_dls; + /* Don't register dynamic library data segments. */ + /* Wizards only. Should be used only if the */ + /* application explicitly registers all roots. */ + /* (In some environments like Microsoft Windows */ + /* and Apple's Darwin, this may also prevent */ + /* registration of the main data segment as part */ + /* of the root set.) */ + /* The setter and getter are unsynchronized. */ +GC_API void GC_CALL GC_set_no_dls(int); +GC_API int GC_CALL GC_get_no_dls(void); + +GC_API GC_ATTR_DEPRECATED GC_word GC_free_space_divisor; + /* We try to make sure that we allocate at */ + /* least N/GC_free_space_divisor bytes between */ + /* collections, where N is twice the number */ + /* of traced bytes, plus the number of untraced */ + /* bytes (bytes in "atomic" objects), plus */ + /* a rough estimate of the root set size. */ + /* N approximates GC tracing work per GC. */ + /* The initial value is GC_FREE_SPACE_DIVISOR. */ + /* Increasing its value will use less space */ + /* but more collection time. Decreasing it */ + /* will appreciably decrease collection time */ + /* at the expense of space. */ + /* The setter and getter are unsynchronized, so */ + /* GC_call_with_alloc_lock() is required to */ + /* avoid data races (if the value is modified */ + /* after the GC is put to multi-threaded mode). */ + /* In version 7.1 (and before), the setter */ + /* returned the old value. */ +GC_API void GC_CALL GC_set_free_space_divisor(GC_word); +GC_API GC_word GC_CALL GC_get_free_space_divisor(void); + +GC_API GC_ATTR_DEPRECATED GC_word GC_max_retries; + /* The maximum number of GCs attempted before */ + /* reporting out of memory after heap */ + /* expansion fails. Initially 0. */ + /* The setter and getter are unsynchronized, so */ + /* GC_call_with_alloc_lock() is required to */ + /* avoid data races (if the value is modified */ + /* after the GC is put to multi-threaded mode). */ +GC_API void GC_CALL GC_set_max_retries(GC_word); +GC_API GC_word GC_CALL GC_get_max_retries(void); + + +GC_API GC_ATTR_DEPRECATED char *GC_stackbottom; + /* Cool end of user stack. */ + /* May be set in the client prior to */ + /* calling any GC_ routines. This */ + /* avoids some overhead, and */ + /* potentially some signals that can */ + /* confuse debuggers. Otherwise the */ + /* collector attempts to set it */ + /* automatically. */ + /* For multi-threaded code, this is the */ + /* cold end of the stack for the */ + /* primordial thread. Portable clients */ + /* should use GC_get_stack_base(), */ + /* GC_call_with_gc_active() and */ + /* GC_register_my_thread() instead. */ + +GC_API GC_ATTR_DEPRECATED int GC_dont_precollect; + /* Do not collect as part of GC */ + /* initialization. Should be set only */ + /* if the client wants a chance to */ + /* manually initialize the root set */ + /* before the first collection. */ + /* Interferes with blacklisting. */ + /* Wizards only. The setter and getter */ + /* are unsynchronized (and no external */ + /* locking is needed since the value is */ + /* accessed at GC initialization only). */ +GC_API void GC_CALL GC_set_dont_precollect(int); +GC_API int GC_CALL GC_get_dont_precollect(void); + +GC_API GC_ATTR_DEPRECATED unsigned long GC_time_limit; + /* If incremental collection is enabled, */ + /* We try to terminate collections */ + /* after this many milliseconds. Not a */ + /* hard time bound. Setting this to */ + /* GC_TIME_UNLIMITED will essentially */ + /* disable incremental collection while */ + /* leaving generational collection */ + /* enabled. */ +#define GC_TIME_UNLIMITED 999999 + /* Setting GC_time_limit to this value */ + /* will disable the "pause time exceeded"*/ + /* tests. */ + /* The setter and getter are unsynchronized, so */ + /* GC_call_with_alloc_lock() is required to */ + /* avoid data races (if the value is modified */ + /* after the GC is put to multi-threaded mode). */ +GC_API void GC_CALL GC_set_time_limit(unsigned long); +GC_API unsigned long GC_CALL GC_get_time_limit(void); + +/* Public procedures */ + +/* Set whether the GC will allocate executable memory pages or not. */ +/* A non-zero argument instructs the collector to allocate memory with */ +/* the executable flag on. Must be called before the collector is */ +/* initialized. May have no effect on some platforms. The default */ +/* value is controlled by NO_EXECUTE_PERMISSION macro (if present then */ +/* the flag is off). Portable clients should have */ +/* GC_set_pages_executable(1) call (before GC_INIT) provided they are */ +/* going to execute code on any of the GC-allocated memory objects. */ +GC_API void GC_CALL GC_set_pages_executable(int); + +/* Returns non-zero value if the GC is set to the allocate-executable */ +/* mode. The mode could be changed by GC_set_pages_executable (before */ +/* GC_INIT) unless the former has no effect on the platform. Does not */ +/* use or need synchronization (i.e. acquiring the allocator lock). */ +GC_API int GC_CALL GC_get_pages_executable(void); + +/* Overrides the default handle-fork mode. Non-zero value means GC */ +/* should install proper pthread_atfork handlers. Has effect only if */ +/* called before GC_INIT. Clients should invoke GC_set_handle_fork */ +/* with non-zero argument if going to use fork with GC functions called */ +/* in the forked child. (Note that such client and atfork handlers */ +/* activities are not fully POSIX-compliant.) GC_set_handle_fork */ +/* instructs GC_init to setup GC fork handlers using pthread_atfork, */ +/* the latter might fail (or, even, absent on some targets) causing */ +/* abort at GC initialization. Starting from 7.3alpha3, problems with */ +/* missing (or failed) pthread_atfork() could be avoided by invocation */ +/* of GC_set_handle_fork(-1) at application start-up and surrounding */ +/* each fork() with the relevant GC_atfork_prepare/parent/child calls. */ +GC_API void GC_CALL GC_set_handle_fork(int); + +/* Routines to handle POSIX fork() manually (no-op if handled */ +/* automatically). GC_atfork_prepare should be called immediately */ +/* before fork(); GC_atfork_parent should be invoked just after fork in */ +/* the branch that corresponds to parent process (i.e., fork result is */ +/* non-zero); GC_atfork_child is to be called immediately in the child */ +/* branch (i.e., fork result is 0). Note that GC_atfork_child() call */ +/* should, of course, precede GC_start_mark_threads call (if any). */ +GC_API void GC_CALL GC_atfork_prepare(void); +GC_API void GC_CALL GC_atfork_parent(void); +GC_API void GC_CALL GC_atfork_child(void); + +/* Initialize the collector. Portable clients should call GC_INIT() */ +/* from the main program instead. */ +GC_API void GC_CALL GC_init(void); + +/* Returns non-zero (TRUE) if and only if the collector is initialized */ +/* (or, at least, the initialization is in progress). */ +GC_API int GC_CALL GC_is_init_called(void); + +/* General purpose allocation routines, with roughly malloc calling */ +/* conv. The atomic versions promise that no relevant pointers are */ +/* contained in the object. The non-atomic versions guarantee that the */ +/* new object is cleared. GC_malloc_stubborn promises that no changes */ +/* to the object will occur after GC_end_stubborn_change has been */ +/* called on the result of GC_malloc_stubborn. GC_malloc_uncollectable */ +/* allocates an object that is scanned for pointers to collectible */ +/* objects, but is not itself collectible. The object is scanned even */ +/* if it does not appear to be reachable. GC_malloc_uncollectable and */ +/* GC_free called on the resulting object implicitly update */ +/* GC_non_gc_bytes appropriately. */ +/* Note that the GC_malloc_stubborn support doesn't really exist */ +/* anymore. MANUAL_VDB provides comparable functionality. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc(size_t /* size_in_bytes */); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc_atomic(size_t /* size_in_bytes */); +GC_API GC_ATTR_MALLOC char * GC_CALL GC_strdup(const char *); +GC_API GC_ATTR_MALLOC char * GC_CALL + GC_strndup(const char *, size_t) GC_ATTR_NONNULL(1); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc_uncollectable(size_t /* size_in_bytes */); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc_stubborn(size_t /* size_in_bytes */); + +/* GC_memalign() is not well tested. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(2) void * GC_CALL + GC_memalign(size_t /* align */, size_t /* lb */); +GC_API int GC_CALL GC_posix_memalign(void ** /* memptr */, size_t /* align */, + size_t /* lb */) GC_ATTR_NONNULL(1); + +/* Explicitly deallocate an object. Dangerous if used incorrectly. */ +/* Requires a pointer to the base of an object. */ +/* If the argument is stubborn, it should not be changeable when freed. */ +/* An object should not be enabled for finalization (and it should not */ +/* contain registered disappearing links of any kind) when it is */ +/* explicitly deallocated. */ +/* GC_free(0) is a no-op, as required by ANSI C for free. */ +GC_API void GC_CALL GC_free(void *); + +/* Stubborn objects may be changed only if the collector is explicitly */ +/* informed. The collector is implicitly informed of coming change */ +/* when such an object is first allocated. The following routines */ +/* inform the collector that an object will no longer be changed, or */ +/* that it will once again be changed. Only non-NULL pointer stores */ +/* into the object are considered to be changes. The argument to */ +/* GC_end_stubborn_change must be exactly the value returned by */ +/* GC_malloc_stubborn or passed to GC_change_stubborn. (In the second */ +/* case, it may be an interior pointer within 512 bytes of the */ +/* beginning of the objects.) There is a performance penalty for */ +/* allowing more than one stubborn object to be changed at once, but it */ +/* is acceptable to do so. The same applies to dropping stubborn */ +/* objects that are still changeable. */ +GC_API void GC_CALL GC_change_stubborn(const void *) GC_ATTR_NONNULL(1); +GC_API void GC_CALL GC_end_stubborn_change(const void *) GC_ATTR_NONNULL(1); + +/* Return a pointer to the base (lowest address) of an object given */ +/* a pointer to a location within the object. */ +/* I.e., map an interior pointer to the corresponding base pointer. */ +/* Note that with debugging allocation, this returns a pointer to the */ +/* actual base of the object, i.e. the debug information, not to */ +/* the base of the user object. */ +/* Return 0 if displaced_pointer doesn't point to within a valid */ +/* object. */ +/* Note that a deallocated object in the garbage collected heap */ +/* may be considered valid, even if it has been deallocated with */ +/* GC_free. */ +GC_API void * GC_CALL GC_base(void * /* displaced_pointer */); + +/* Return non-zero (TRUE) if and only if the argument points to */ +/* somewhere in GC heap. Primary use is as a fast alternative to */ +/* GC_base to check whether the pointed object is allocated by GC */ +/* or not. It is assumed that the collector is already initialized. */ +GC_API int GC_CALL GC_is_heap_ptr(const void *); + +/* Given a pointer to the base of an object, return its size in bytes. */ +/* The returned size may be slightly larger than what was originally */ +/* requested. */ +GC_API size_t GC_CALL GC_size(const void * /* obj_addr */) GC_ATTR_NONNULL(1); + +/* For compatibility with C library. This is occasionally faster than */ +/* a malloc followed by a bcopy. But if you rely on that, either here */ +/* or with the standard C library, your code is broken. In my */ +/* opinion, it shouldn't have been invented, but now we're stuck. -HB */ +/* The resulting object has the same kind as the original. */ +/* If the argument is stubborn, the result will have changes enabled. */ +/* It is an error to have changes enabled for the original object. */ +/* It does not change the content of the object from its beginning to */ +/* the minimum of old size and new_size_in_bytes; the content above in */ +/* case of object size growth is initialized to zero (not guaranteed */ +/* for atomic object type). The function follows ANSI conventions for */ +/* NULL old_object (i.e., equivalent to GC_malloc regardless of new */ +/* size). If new size is zero (and old_object is non-NULL) then the */ +/* call is equivalent to GC_free (and NULL is returned). If old_object */ +/* is non-NULL, it must have been returned by an earlier call to */ +/* GC_malloc* or GC_realloc. In case of the allocation failure, the */ +/* memory pointed by old_object is untouched (and not freed). */ +/* If the returned pointer is not the same as old_object and both of */ +/* them are non-NULL then old_object is freed. Returns either NULL (in */ +/* case of the allocation failure or zero new size) or pointer to the */ +/* allocated memory. */ +GC_API void * GC_CALL GC_realloc(void * /* old_object */, + size_t /* new_size_in_bytes */) + /* 'realloc' attr */ GC_ATTR_ALLOC_SIZE(2); + +/* Explicitly increase the heap size. */ +/* Returns 0 on failure, 1 on success. */ +GC_API int GC_CALL GC_expand_hp(size_t /* number_of_bytes */); + +/* Limit the heap size to n bytes. Useful when you're debugging, */ +/* especially on systems that don't handle running out of memory well. */ +/* n == 0 ==> unbounded. This is the default. This setter function is */ +/* unsynchronized (so it might require GC_call_with_alloc_lock to avoid */ +/* data races). */ +GC_API void GC_CALL GC_set_max_heap_size(GC_word /* n */); + +/* Inform the collector that a certain section of statically allocated */ +/* memory contains no pointers to garbage collected memory. Thus it */ +/* need not be scanned. This is sometimes important if the application */ +/* maps large read/write files into the address space, which could be */ +/* mistaken for dynamic library data segments on some systems. */ +/* Both section start and end are not needed to be pointer-aligned. */ +GC_API void GC_CALL GC_exclude_static_roots(void * /* low_address */, + void * /* high_address_plus_1 */); + +/* Clear the set of root segments. Wizards only. */ +GC_API void GC_CALL GC_clear_roots(void); + +/* Add a root segment. Wizards only. */ +/* Both segment start and end are not needed to be pointer-aligned. */ +/* low_address must not be greater than high_address_plus_1. */ +GC_API void GC_CALL GC_add_roots(void * /* low_address */, + void * /* high_address_plus_1 */); + +/* Remove a root segment. Wizards only. */ +/* May be unimplemented on some platforms. */ +GC_API void GC_CALL GC_remove_roots(void * /* low_address */, + void * /* high_address_plus_1 */); + +/* Add a displacement to the set of those considered valid by the */ +/* collector. GC_register_displacement(n) means that if p was returned */ +/* by GC_malloc, then (char *)p + n will be considered to be a valid */ +/* pointer to p. N must be small and less than the size of p. */ +/* (All pointers to the interior of objects from the stack are */ +/* considered valid in any case. This applies to heap objects and */ +/* static data.) */ +/* Preferably, this should be called before any other GC procedures. */ +/* Calling it later adds to the probability of excess memory */ +/* retention. */ +/* This is a no-op if the collector has recognition of */ +/* arbitrary interior pointers enabled, which is now the default. */ +GC_API void GC_CALL GC_register_displacement(size_t /* n */); + +/* The following version should be used if any debugging allocation is */ +/* being done. */ +GC_API void GC_CALL GC_debug_register_displacement(size_t /* n */); + +/* Explicitly trigger a full, world-stop collection. */ +GC_API void GC_CALL GC_gcollect(void); + +/* Same as above but ignores the default stop_func setting and tries to */ +/* unmap as much memory as possible (regardless of the corresponding */ +/* switch setting). The recommended usage: on receiving a system */ +/* low-memory event; before retrying a system call failed because of */ +/* the system is running out of resources. */ +GC_API void GC_CALL GC_gcollect_and_unmap(void); + +/* Trigger a full world-stopped collection. Abort the collection if */ +/* and when stop_func returns a nonzero value. Stop_func will be */ +/* called frequently, and should be reasonably fast. (stop_func is */ +/* called with the allocation lock held and the world might be stopped; */ +/* it's not allowed for stop_func to manipulate pointers to the garbage */ +/* collected heap or call most of GC functions.) This works even */ +/* if virtual dirty bits, and hence incremental collection is not */ +/* available for this architecture. Collections can be aborted faster */ +/* than normal pause times for incremental collection. However, */ +/* aborted collections do no useful work; the next collection needs */ +/* to start from the beginning. stop_func must not be 0. */ +/* GC_try_to_collect() returns 0 if the collection was aborted (or the */ +/* collections are disabled), 1 if it succeeded. */ +typedef int (GC_CALLBACK * GC_stop_func)(void); +GC_API int GC_CALL GC_try_to_collect(GC_stop_func /* stop_func */) + GC_ATTR_NONNULL(1); + +/* Set and get the default stop_func. The default stop_func is used by */ +/* GC_gcollect() and by implicitly trigged collections (except for the */ +/* case when handling out of memory). Must not be 0. */ +/* Both the setter and getter acquire the GC lock to avoid data races. */ +GC_API void GC_CALL GC_set_stop_func(GC_stop_func /* stop_func */) + GC_ATTR_NONNULL(1); +GC_API GC_stop_func GC_CALL GC_get_stop_func(void); + +/* Return the number of bytes in the heap. Excludes collector private */ +/* data structures. Excludes the unmapped memory (returned to the OS). */ +/* Includes empty blocks and fragmentation loss. Includes some pages */ +/* that were allocated but never written. */ +/* This is an unsynchronized getter, so it should be called typically */ +/* with the GC lock held to avoid data races on multiprocessors (the */ +/* alternative is to use GC_get_heap_usage_safe or GC_get_prof_stats */ +/* API calls instead). */ +/* This getter remains lock-free (unsynchronized) for compatibility */ +/* reason since some existing clients call it from a GC callback */ +/* holding the allocator lock. (This API function and the following */ +/* four ones below were made thread-safe in GC v7.2alpha1 and */ +/* reverted back in v7.2alpha7 for the reason described.) */ +GC_API size_t GC_CALL GC_get_heap_size(void); + +/* Return a lower bound on the number of free bytes in the heap */ +/* (excluding the unmapped memory space). This is an unsynchronized */ +/* getter (see GC_get_heap_size comment regarding thread-safety). */ +GC_API size_t GC_CALL GC_get_free_bytes(void); + +/* Return the size (in bytes) of the unmapped memory (which is returned */ +/* to the OS but could be remapped back by the collector later unless */ +/* the OS runs out of system/virtual memory). This is an unsynchronized */ +/* getter (see GC_get_heap_size comment regarding thread-safety). */ +GC_API size_t GC_CALL GC_get_unmapped_bytes(void); + +/* Return the number of bytes allocated since the last collection. */ +/* This is an unsynchronized getter (see GC_get_heap_size comment */ +/* regarding thread-safety). */ +GC_API size_t GC_CALL GC_get_bytes_since_gc(void); + +/* Return the total number of bytes allocated in this process. */ +/* Never decreases, except due to wrapping. This is an unsynchronized */ +/* getter (see GC_get_heap_size comment regarding thread-safety). */ +GC_API size_t GC_CALL GC_get_total_bytes(void); + +/* Return the heap usage information. This is a thread-safe (atomic) */ +/* alternative for the five above getters. (This function acquires */ +/* the allocator lock thus preventing data racing and returning the */ +/* consistent result.) Passing NULL pointer is allowed for any */ +/* argument. Returned (filled in) values are of word type. */ +/* (This API function was introduced in GC v7.2alpha7 at the same time */ +/* when GC_get_heap_size and the friends were made lock-free again.) */ +GC_API void GC_CALL GC_get_heap_usage_safe(GC_word * /* pheap_size */, + GC_word * /* pfree_bytes */, + GC_word * /* punmapped_bytes */, + GC_word * /* pbytes_since_gc */, + GC_word * /* ptotal_bytes */); + +/* Structure used to query GC statistics (profiling information). */ +/* More fields could be added in the future. To preserve compatibility */ +/* new fields should be added only to the end, and no deprecated fields */ +/* should be removed from. */ +struct GC_prof_stats_s { + GC_word heapsize_full; + /* Heap size in bytes (including the area unmapped to OS). */ + /* Same as GC_get_heap_size() + GC_get_unmapped_bytes(). */ + GC_word free_bytes_full; + /* Total bytes contained in free and unmapped blocks. */ + /* Same as GC_get_free_bytes() + GC_get_unmapped_bytes(). */ + GC_word unmapped_bytes; + /* Amount of memory unmapped to OS. Same as the value */ + /* returned by GC_get_unmapped_bytes(). */ + GC_word bytes_allocd_since_gc; + /* Number of bytes allocated since the recent collection. */ + /* Same as returned by GC_get_bytes_since_gc(). */ + GC_word allocd_bytes_before_gc; + /* Number of bytes allocated before the recent garbage */ + /* collection. The value may wrap. Same as the result of */ + /* GC_get_total_bytes() - GC_get_bytes_since_gc(). */ + GC_word non_gc_bytes; + /* Number of bytes not considered candidates for garbage */ + /* collection. Same as returned by GC_get_non_gc_bytes(). */ + GC_word gc_no; + /* Garbage collection cycle number. The value may wrap */ + /* (and could be -1). Same as returned by GC_get_gc_no(). */ + GC_word markers_m1; + /* Number of marker threads (excluding the initiating one). */ + /* Same as returned by GC_get_parallel (or 0 if the */ + /* collector is single-threaded). */ + GC_word bytes_reclaimed_since_gc; + /* Approximate number of reclaimed bytes after recent GC. */ + GC_word reclaimed_bytes_before_gc; + /* Approximate number of bytes reclaimed before the recent */ + /* garbage collection. The value may wrap. */ +}; + +/* Atomically get GC statistics (various global counters). Clients */ +/* should pass the size of the buffer (of GC_prof_stats_s type) to fill */ +/* in the values - this is for interoperability between different GC */ +/* versions, an old client could have fewer fields, and vice versa, */ +/* client could use newer gc.h (with more entries declared in the */ +/* structure) than that of the linked libgc binary; in the latter case, */ +/* unsupported (unknown) fields are filled in with -1. Return the size */ +/* (in bytes) of the filled in part of the structure (excluding all */ +/* unknown fields, if any). */ +GC_API size_t GC_CALL GC_get_prof_stats(struct GC_prof_stats_s *, + size_t /* stats_sz */); +#ifdef GC_THREADS + /* Same as above but unsynchronized (i.e., not holding the allocation */ + /* lock). Clients should call it using GC_call_with_alloc_lock to */ + /* avoid data races on multiprocessors. */ + GC_API size_t GC_CALL GC_get_prof_stats_unsafe(struct GC_prof_stats_s *, + size_t /* stats_sz */); +#endif + +/* Count total memory use in bytes by all allocated blocks. Acquires */ +/* the lock. */ +GC_API size_t GC_CALL GC_get_memory_use(void); + +/* Disable garbage collection. Even GC_gcollect calls will be */ +/* ineffective. */ +GC_API void GC_CALL GC_disable(void); + +/* Return non-zero (TRUE) if and only if garbage collection is disabled */ +/* (i.e., GC_dont_gc value is non-zero). Does not acquire the lock. */ +GC_API int GC_CALL GC_is_disabled(void); + +/* Try to re-enable garbage collection. GC_disable() and GC_enable() */ +/* calls nest. Garbage collection is enabled if the number of calls to */ +/* both functions is equal. */ +GC_API void GC_CALL GC_enable(void); + +/* Enable incremental/generational collection. Not advisable unless */ +/* dirty bits are available or most heap objects are pointer-free */ +/* (atomic) or immutable. Don't use in leak finding mode. Ignored if */ +/* GC_dont_gc is non-zero. Only the generational piece of this is */ +/* functional if GC_parallel is non-zero or if GC_time_limit is */ +/* GC_TIME_UNLIMITED. Causes thread-local variant of GC_gcj_malloc() */ +/* to revert to locked allocation. Must be called before any such */ +/* GC_gcj_malloc() calls. For best performance, should be called as */ +/* early as possible. On some platforms, calling it later may have */ +/* adverse effects. */ +/* Safe to call before GC_INIT(). Includes a GC_init() call. */ +GC_API void GC_CALL GC_enable_incremental(void); + +/* Does incremental mode write-protect pages? Returns zero or */ +/* more of the following, or'ed together: */ +#define GC_PROTECTS_POINTER_HEAP 1 /* May protect non-atomic objects. */ +#define GC_PROTECTS_PTRFREE_HEAP 2 +#define GC_PROTECTS_STATIC_DATA 4 /* Currently never. */ +#define GC_PROTECTS_STACK 8 /* Probably impractical. */ + +#define GC_PROTECTS_NONE 0 +/* The collector is assumed to be initialized before this call. */ +GC_API int GC_CALL GC_incremental_protection_needs(void); + +/* Perform some garbage collection work, if appropriate. */ +/* Return 0 if there is no more work to be done (including the */ +/* case when garbage collection is not appropriate). */ +/* Typically performs an amount of work corresponding roughly */ +/* to marking from one page. May do more work if further */ +/* progress requires it, e.g. if incremental collection is */ +/* disabled. It is reasonable to call this in a wait loop */ +/* until it returns 0. */ +GC_API int GC_CALL GC_collect_a_little(void); + +/* Allocate an object of size lb bytes. The client guarantees that */ +/* as long as the object is live, it will be referenced by a pointer */ +/* that points to somewhere within the first 256 bytes of the object. */ +/* (This should normally be declared volatile to prevent the compiler */ +/* from invalidating this assertion.) This routine is only useful */ +/* if a large array is being allocated. It reduces the chance of */ +/* accidentally retaining such an array as a result of scanning an */ +/* integer that happens to be an address inside the array. (Actually, */ +/* it reduces the chance of the allocator not finding space for such */ +/* an array, since it will try hard to avoid introducing such a false */ +/* reference.) On a SunOS 4.X or MS Windows system this is recommended */ +/* for arrays likely to be larger than 100K or so. For other systems, */ +/* or if the collector is not configured to recognize all interior */ +/* pointers, the threshold is normally much higher. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc_ignore_off_page(size_t /* lb */); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc_atomic_ignore_off_page(size_t /* lb */); + +#ifdef GC_ADD_CALLER +# define GC_EXTRAS GC_RETURN_ADDR, __FILE__, __LINE__ +# define GC_EXTRA_PARAMS GC_word ra, const char * s, int i +#else +# define GC_EXTRAS __FILE__, __LINE__ +# define GC_EXTRA_PARAMS const char * s, int i +#endif + +/* The following is only defined if the library has been suitably */ +/* compiled: */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc_atomic_uncollectable(size_t /* size_in_bytes */); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_debug_malloc_atomic_uncollectable(size_t, GC_EXTRA_PARAMS); + +/* Debugging (annotated) allocation. GC_gcollect will check */ +/* objects allocated in this way for overwrites, etc. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_debug_malloc(size_t /* size_in_bytes */, GC_EXTRA_PARAMS); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_debug_malloc_atomic(size_t /* size_in_bytes */, GC_EXTRA_PARAMS); +GC_API GC_ATTR_MALLOC char * GC_CALL + GC_debug_strdup(const char *, GC_EXTRA_PARAMS); +GC_API GC_ATTR_MALLOC char * GC_CALL + GC_debug_strndup(const char *, size_t, GC_EXTRA_PARAMS) + GC_ATTR_NONNULL(1); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_debug_malloc_uncollectable(size_t /* size_in_bytes */, + GC_EXTRA_PARAMS); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_debug_malloc_stubborn(size_t /* size_in_bytes */, GC_EXTRA_PARAMS); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_debug_malloc_ignore_off_page(size_t /* size_in_bytes */, + GC_EXTRA_PARAMS); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_debug_malloc_atomic_ignore_off_page(size_t /* size_in_bytes */, + GC_EXTRA_PARAMS); +GC_API void GC_CALL GC_debug_free(void *); +GC_API void * GC_CALL GC_debug_realloc(void * /* old_object */, + size_t /* new_size_in_bytes */, GC_EXTRA_PARAMS) + /* 'realloc' attr */ GC_ATTR_ALLOC_SIZE(2); +GC_API void GC_CALL GC_debug_change_stubborn(const void *) GC_ATTR_NONNULL(1); +GC_API void GC_CALL GC_debug_end_stubborn_change(const void *) + GC_ATTR_NONNULL(1); + +/* Routines that allocate objects with debug information (like the */ +/* above), but just fill in dummy file and line number information. */ +/* Thus they can serve as drop-in malloc/realloc replacements. This */ +/* can be useful for two reasons: */ +/* 1) It allows the collector to be built with DBG_HDRS_ALL defined */ +/* even if some allocation calls come from 3rd party libraries */ +/* that can't be recompiled. */ +/* 2) On some platforms, the file and line information is redundant, */ +/* since it can be reconstructed from a stack trace. On such */ +/* platforms it may be more convenient not to recompile, e.g. for */ +/* leak detection. This can be accomplished by instructing the */ +/* linker to replace malloc/realloc with these. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_debug_malloc_replacement(size_t /* size_in_bytes */); +GC_API /* 'realloc' attr */ GC_ATTR_ALLOC_SIZE(2) void * GC_CALL + GC_debug_realloc_replacement(void * /* object_addr */, + size_t /* size_in_bytes */); + +#ifdef GC_DEBUG_REPLACEMENT +# define GC_MALLOC(sz) GC_debug_malloc_replacement(sz) +# define GC_REALLOC(old, sz) GC_debug_realloc_replacement(old, sz) +#elif defined(GC_DEBUG) +# define GC_MALLOC(sz) GC_debug_malloc(sz, GC_EXTRAS) +# define GC_REALLOC(old, sz) GC_debug_realloc(old, sz, GC_EXTRAS) +#else +# define GC_MALLOC(sz) GC_malloc(sz) +# define GC_REALLOC(old, sz) GC_realloc(old, sz) +#endif /* !GC_DEBUG_REPLACEMENT && !GC_DEBUG */ + +#ifdef GC_DEBUG +# define GC_MALLOC_ATOMIC(sz) GC_debug_malloc_atomic(sz, GC_EXTRAS) +# define GC_STRDUP(s) GC_debug_strdup(s, GC_EXTRAS) +# define GC_STRNDUP(s, sz) GC_debug_strndup(s, sz, GC_EXTRAS) +# define GC_MALLOC_ATOMIC_UNCOLLECTABLE(sz) \ + GC_debug_malloc_atomic_uncollectable(sz, GC_EXTRAS) +# define GC_MALLOC_UNCOLLECTABLE(sz) \ + GC_debug_malloc_uncollectable(sz, GC_EXTRAS) +# define GC_MALLOC_IGNORE_OFF_PAGE(sz) \ + GC_debug_malloc_ignore_off_page(sz, GC_EXTRAS) +# define GC_MALLOC_ATOMIC_IGNORE_OFF_PAGE(sz) \ + GC_debug_malloc_atomic_ignore_off_page(sz, GC_EXTRAS) +# define GC_FREE(p) GC_debug_free(p) +# define GC_REGISTER_FINALIZER(p, f, d, of, od) \ + GC_debug_register_finalizer(p, f, d, of, od) +# define GC_REGISTER_FINALIZER_IGNORE_SELF(p, f, d, of, od) \ + GC_debug_register_finalizer_ignore_self(p, f, d, of, od) +# define GC_REGISTER_FINALIZER_NO_ORDER(p, f, d, of, od) \ + GC_debug_register_finalizer_no_order(p, f, d, of, od) +# define GC_REGISTER_FINALIZER_UNREACHABLE(p, f, d, of, od) \ + GC_debug_register_finalizer_unreachable(p, f, d, of, od) +# define GC_MALLOC_STUBBORN(sz) GC_debug_malloc_stubborn(sz, GC_EXTRAS) +# define GC_CHANGE_STUBBORN(p) GC_debug_change_stubborn(p) +# define GC_END_STUBBORN_CHANGE(p) GC_debug_end_stubborn_change(p) +# define GC_GENERAL_REGISTER_DISAPPEARING_LINK(link, obj) \ + GC_general_register_disappearing_link(link, \ + GC_base((/* no const */ void *)(obj))) +# define GC_REGISTER_LONG_LINK(link, obj) \ + GC_register_long_link(link, GC_base((/* no const */ void *)(obj))) +# define GC_REGISTER_DISPLACEMENT(n) GC_debug_register_displacement(n) +#else +# define GC_MALLOC_ATOMIC(sz) GC_malloc_atomic(sz) +# define GC_STRDUP(s) GC_strdup(s) +# define GC_STRNDUP(s, sz) GC_strndup(s, sz) +# define GC_MALLOC_ATOMIC_UNCOLLECTABLE(sz) GC_malloc_atomic_uncollectable(sz) +# define GC_MALLOC_UNCOLLECTABLE(sz) GC_malloc_uncollectable(sz) +# define GC_MALLOC_IGNORE_OFF_PAGE(sz) \ + GC_malloc_ignore_off_page(sz) +# define GC_MALLOC_ATOMIC_IGNORE_OFF_PAGE(sz) \ + GC_malloc_atomic_ignore_off_page(sz) +# define GC_FREE(p) GC_free(p) +# define GC_REGISTER_FINALIZER(p, f, d, of, od) \ + GC_register_finalizer(p, f, d, of, od) +# define GC_REGISTER_FINALIZER_IGNORE_SELF(p, f, d, of, od) \ + GC_register_finalizer_ignore_self(p, f, d, of, od) +# define GC_REGISTER_FINALIZER_NO_ORDER(p, f, d, of, od) \ + GC_register_finalizer_no_order(p, f, d, of, od) +# define GC_REGISTER_FINALIZER_UNREACHABLE(p, f, d, of, od) \ + GC_register_finalizer_unreachable(p, f, d, of, od) +# define GC_MALLOC_STUBBORN(sz) GC_malloc_stubborn(sz) +# define GC_CHANGE_STUBBORN(p) GC_change_stubborn(p) +# define GC_END_STUBBORN_CHANGE(p) GC_end_stubborn_change(p) +# define GC_GENERAL_REGISTER_DISAPPEARING_LINK(link, obj) \ + GC_general_register_disappearing_link(link, obj) +# define GC_REGISTER_LONG_LINK(link, obj) \ + GC_register_long_link(link, obj) +# define GC_REGISTER_DISPLACEMENT(n) GC_register_displacement(n) +#endif /* !GC_DEBUG */ + +/* The following are included because they are often convenient, and */ +/* reduce the chance for a misspecified size argument. But calls may */ +/* expand to something syntactically incorrect if t is a complicated */ +/* type expression. Note that, unlike C++ new operator, these ones */ +/* may return NULL (if out of memory). */ +#define GC_NEW(t) ((t*)GC_MALLOC(sizeof(t))) +#define GC_NEW_ATOMIC(t) ((t*)GC_MALLOC_ATOMIC(sizeof(t))) +#define GC_NEW_STUBBORN(t) ((t*)GC_MALLOC_STUBBORN(sizeof(t))) +#define GC_NEW_UNCOLLECTABLE(t) ((t*)GC_MALLOC_UNCOLLECTABLE(sizeof(t))) + +#ifdef GC_REQUIRE_WCSDUP + /* This might be unavailable on some targets (or not needed). */ + /* wchar_t should be defined in stddef.h */ + GC_API GC_ATTR_MALLOC wchar_t * GC_CALL + GC_wcsdup(const wchar_t *) GC_ATTR_NONNULL(1); + GC_API GC_ATTR_MALLOC wchar_t * GC_CALL + GC_debug_wcsdup(const wchar_t *, GC_EXTRA_PARAMS) GC_ATTR_NONNULL(1); +# ifdef GC_DEBUG +# define GC_WCSDUP(s) GC_debug_wcsdup(s, GC_EXTRAS) +# else +# define GC_WCSDUP(s) GC_wcsdup(s) +# endif +#endif /* GC_REQUIRE_WCSDUP */ + +/* Finalization. Some of these primitives are grossly unsafe. */ +/* The idea is to make them both cheap, and sufficient to build */ +/* a safer layer, closer to Modula-3, Java, or PCedar finalization. */ +/* The interface represents my conclusions from a long discussion */ +/* with Alan Demers, Dan Greene, Carl Hauser, Barry Hayes, */ +/* Christian Jacobi, and Russ Atkinson. It's not perfect, and */ +/* probably nobody else agrees with it. Hans-J. Boehm 3/13/92 */ +typedef void (GC_CALLBACK * GC_finalization_proc)(void * /* obj */, + void * /* client_data */); + +GC_API void GC_CALL GC_register_finalizer(void * /* obj */, + GC_finalization_proc /* fn */, void * /* cd */, + GC_finalization_proc * /* ofn */, void ** /* ocd */) + GC_ATTR_NONNULL(1); +GC_API void GC_CALL GC_debug_register_finalizer(void * /* obj */, + GC_finalization_proc /* fn */, void * /* cd */, + GC_finalization_proc * /* ofn */, void ** /* ocd */) + GC_ATTR_NONNULL(1); + /* When obj is no longer accessible, invoke */ + /* (*fn)(obj, cd). If a and b are inaccessible, and */ + /* a points to b (after disappearing links have been */ + /* made to disappear), then only a will be */ + /* finalized. (If this does not create any new */ + /* pointers to b, then b will be finalized after the */ + /* next collection.) Any finalizable object that */ + /* is reachable from itself by following one or more */ + /* pointers will not be finalized (or collected). */ + /* Thus cycles involving finalizable objects should */ + /* be avoided, or broken by disappearing links. */ + /* All but the last finalizer registered for an object */ + /* is ignored. */ + /* No-op in the leak-finding mode. */ + /* Finalization may be removed by passing 0 as fn. */ + /* Finalizers are implicitly unregistered when they are */ + /* enqueued for finalization (i.e. become ready to be */ + /* finalized). */ + /* The old finalizer and client data are stored in */ + /* *ofn and *ocd. (ofn and/or ocd may be NULL. */ + /* The allocation lock is held while *ofn and *ocd are */ + /* updated. In case of error (no memory to register */ + /* new finalizer), *ofn and *ocd remain unchanged.) */ + /* Fn is never invoked on an accessible object, */ + /* provided hidden pointers are converted to real */ + /* pointers only if the allocation lock is held, and */ + /* such conversions are not performed by finalization */ + /* routines. */ + /* If GC_register_finalizer is aborted as a result of */ + /* a signal, the object may be left with no */ + /* finalization, even if neither the old nor new */ + /* finalizer were NULL. */ + /* Obj should be the starting address of an object */ + /* allocated by GC_malloc or friends. Obj may also be */ + /* NULL or point to something outside GC heap (in this */ + /* case, fn is ignored, *ofn and *ocd are set to NULL). */ + /* Note that any garbage collectible object referenced */ + /* by cd will be considered accessible until the */ + /* finalizer is invoked. */ + +/* Another versions of the above follow. It ignores */ +/* self-cycles, i.e. pointers from a finalizable object to */ +/* itself. There is a stylistic argument that this is wrong, */ +/* but it's unavoidable for C++, since the compiler may */ +/* silently introduce these. It's also benign in that specific */ +/* case. And it helps if finalizable objects are split to */ +/* avoid cycles. */ +/* Note that cd will still be viewed as accessible, even if it */ +/* refers to the object itself. */ +GC_API void GC_CALL GC_register_finalizer_ignore_self(void * /* obj */, + GC_finalization_proc /* fn */, void * /* cd */, + GC_finalization_proc * /* ofn */, void ** /* ocd */) + GC_ATTR_NONNULL(1); +GC_API void GC_CALL GC_debug_register_finalizer_ignore_self(void * /* obj */, + GC_finalization_proc /* fn */, void * /* cd */, + GC_finalization_proc * /* ofn */, void ** /* ocd */) + GC_ATTR_NONNULL(1); + +/* Another version of the above. It ignores all cycles. */ +/* It should probably only be used by Java implementations. */ +/* Note that cd will still be viewed as accessible, even if it */ +/* refers to the object itself. */ +GC_API void GC_CALL GC_register_finalizer_no_order(void * /* obj */, + GC_finalization_proc /* fn */, void * /* cd */, + GC_finalization_proc * /* ofn */, void ** /* ocd */) + GC_ATTR_NONNULL(1); +GC_API void GC_CALL GC_debug_register_finalizer_no_order(void * /* obj */, + GC_finalization_proc /* fn */, void * /* cd */, + GC_finalization_proc * /* ofn */, void ** /* ocd */) + GC_ATTR_NONNULL(1); + +/* This is a special finalizer that is useful when an object's */ +/* finalizer must be run when the object is known to be no */ +/* longer reachable, not even from other finalizable objects. */ +/* It behaves like "normal" finalization, except that the */ +/* finalizer is not run while the object is reachable from */ +/* other objects specifying unordered finalization. */ +/* Effectively it allows an object referenced, possibly */ +/* indirectly, from an unordered finalizable object to override */ +/* the unordered finalization request. */ +/* This can be used in combination with finalizer_no_order so */ +/* as to release resources that must not be released while an */ +/* object can still be brought back to life by other */ +/* finalizers. */ +/* Only works if GC_java_finalization is set. Probably only */ +/* of interest when implementing a language that requires */ +/* unordered finalization (e.g. Java, C#). */ +GC_API void GC_CALL GC_register_finalizer_unreachable(void * /* obj */, + GC_finalization_proc /* fn */, void * /* cd */, + GC_finalization_proc * /* ofn */, void ** /* ocd */) + GC_ATTR_NONNULL(1); +GC_API void GC_CALL GC_debug_register_finalizer_unreachable(void * /* obj */, + GC_finalization_proc /* fn */, void * /* cd */, + GC_finalization_proc * /* ofn */, void ** /* ocd */) + GC_ATTR_NONNULL(1); + +#define GC_NO_MEMORY 2 /* Failure due to lack of memory. */ + +/* The following routine may be used to break cycles between */ +/* finalizable objects, thus causing cyclic finalizable */ +/* objects to be finalized in the correct order. Standard */ +/* use involves calling GC_register_disappearing_link(&p), */ +/* where p is a pointer that is not followed by finalization */ +/* code, and should not be considered in determining */ +/* finalization order. */ +GC_API int GC_CALL GC_register_disappearing_link(void ** /* link */) + GC_ATTR_NONNULL(1); + /* Link should point to a field of a heap allocated */ + /* object obj. *link will be cleared when obj is */ + /* found to be inaccessible. This happens BEFORE any */ + /* finalization code is invoked, and BEFORE any */ + /* decisions about finalization order are made. */ + /* This is useful in telling the finalizer that */ + /* some pointers are not essential for proper */ + /* finalization. This may avoid finalization cycles. */ + /* Note that obj may be resurrected by another */ + /* finalizer, and thus the clearing of *link may */ + /* be visible to non-finalization code. */ + /* There's an argument that an arbitrary action should */ + /* be allowed here, instead of just clearing a pointer. */ + /* But this causes problems if that action alters, or */ + /* examines connectivity. Returns GC_DUPLICATE if link */ + /* was already registered, GC_SUCCESS if registration */ + /* succeeded, GC_NO_MEMORY if it failed for lack of */ + /* memory, and GC_oom_fn did not handle the problem. */ + /* Only exists for backward compatibility. See below: */ + +GC_API int GC_CALL GC_general_register_disappearing_link(void ** /* link */, + const void * /* obj */) + GC_ATTR_NONNULL(1) GC_ATTR_NONNULL(2); + /* A slight generalization of the above. *link is */ + /* cleared when obj first becomes inaccessible. This */ + /* can be used to implement weak pointers easily and */ + /* safely. Typically link will point to a location */ + /* holding a disguised pointer to obj. (A pointer */ + /* inside an "atomic" object is effectively disguised.) */ + /* In this way, weak pointers are broken before any */ + /* object reachable from them gets finalized. */ + /* Each link may be registered only with one obj value, */ + /* i.e. all objects but the last one (link registered */ + /* with) are ignored. This was added after a long */ + /* email discussion with John Ellis. */ + /* link must be non-NULL (and be properly aligned). */ + /* obj must be a pointer to the first word of an object */ + /* allocated by GC_malloc or friends. A link */ + /* disappears when it is unregistered manually, or when */ + /* (*link) is cleared, or when the object containing */ + /* this link is garbage collected. It is unsafe to */ + /* explicitly deallocate the object containing link. */ + /* Explicit deallocation of obj may or may not cause */ + /* link to eventually be cleared. */ + /* No-op in the leak-finding mode. */ + /* This function can be used to implement certain types */ + /* of weak pointers. Note, however, this generally */ + /* requires that the allocation lock is held (see */ + /* GC_call_with_alloc_lock() below) when the disguised */ + /* pointer is accessed. Otherwise a strong pointer */ + /* could be recreated between the time the collector */ + /* decides to reclaim the object and the link is */ + /* cleared. Returns GC_SUCCESS if registration */ + /* succeeded (a new link is registered), GC_DUPLICATE */ + /* if link was already registered (with some object), */ + /* GC_NO_MEMORY if registration failed for lack of */ + /* memory (and GC_oom_fn did not handle the problem), */ + /* GC_UNIMPLEMENTED if GC_find_leak is true. */ + +GC_API int GC_CALL GC_move_disappearing_link(void ** /* link */, + void ** /* new_link */) + GC_ATTR_NONNULL(2); + /* Moves a link previously registered via */ + /* GC_general_register_disappearing_link (or */ + /* GC_register_disappearing_link). Does not change the */ + /* target object of the weak reference. Does not */ + /* change (*new_link) content. May be called with */ + /* new_link equal to link (to check whether link has */ + /* been registered). Returns GC_SUCCESS on success, */ + /* GC_DUPLICATE if there is already another */ + /* disappearing link at the new location (never */ + /* returned if new_link is equal to link), GC_NOT_FOUND */ + /* if no link is registered at the original location. */ + +GC_API int GC_CALL GC_unregister_disappearing_link(void ** /* link */); + /* Undoes a registration by either of the above two */ + /* routines. Returns 0 if link was not actually */ + /* registered (otherwise returns 1). */ + +GC_API int GC_CALL GC_register_long_link(void ** /* link */, + const void * /* obj */) + GC_ATTR_NONNULL(1) GC_ATTR_NONNULL(2); + /* Similar to GC_general_register_disappearing_link but */ + /* *link only gets cleared when obj becomes truly */ + /* inaccessible. An object becomes truly inaccessible */ + /* when it can no longer be resurrected from its */ + /* finalizer (e.g. by assigning itself to a pointer */ + /* traceable from root). This can be used to implement */ + /* long weak pointers easily and safely. */ + +GC_API int GC_CALL GC_move_long_link(void ** /* link */, + void ** /* new_link */) + GC_ATTR_NONNULL(2); + /* Similar to GC_move_disappearing_link but for a link */ + /* previously registered via GC_register_long_link. */ + +GC_API int GC_CALL GC_unregister_long_link(void ** /* link */); + /* Similar to GC_unregister_disappearing_link but for a */ + /* registration by either of the above two routines. */ + +/* Support of toggle-ref style of external memory management */ +/* without hooking up to the host retain/release machinery. */ +/* The idea of toggle-ref is that an external reference to */ +/* an object is kept and it can be either a strong or weak */ +/* reference; a weak reference is used when the external peer */ +/* has no interest in the object, and a strong otherwise. */ +typedef enum { + GC_TOGGLE_REF_DROP, + GC_TOGGLE_REF_STRONG, + GC_TOGGLE_REF_WEAK +} GC_ToggleRefStatus; + +/* The callback is to decide (return) the new state of a given */ +/* object. Invoked by the collector for all objects registered */ +/* for toggle-ref processing. Invoked with the allocation lock */ +/* held (but the "world" is running). */ +typedef GC_ToggleRefStatus (GC_CALLBACK *GC_toggleref_func)(void * /* obj */); + +/* Set (register) a callback that decides the state of a given */ +/* object (by, probably, inspecting its native state). */ +/* The argument may be 0 (means no callback). Both the setter */ +/* and the getter acquire the allocation lock (to avoid data */ +/* races). */ +GC_API void GC_CALL GC_set_toggleref_func(GC_toggleref_func); +GC_API GC_toggleref_func GC_CALL GC_get_toggleref_func(void); + +/* Register a given object for toggle-ref processing. It will */ +/* be stored internally and the toggle-ref callback will be */ +/* invoked on the object until the callback returns */ +/* GC_TOGGLE_REF_DROP or the object is collected. If is_strong */ +/* is true then the object is registered with a strong ref, */ +/* a weak one otherwise. Returns GC_SUCCESS if registration */ +/* succeeded (or no callback registered yet), GC_NO_MEMORY if */ +/* it failed for lack of memory. */ +GC_API int GC_CALL GC_toggleref_add(void * /* obj */, int /* is_strong */) + GC_ATTR_NONNULL(1); + +/* Finalizer callback support. Invoked by the collector (with */ +/* the allocation lock held) for each unreachable object */ +/* enqueued for finalization. */ +typedef void (GC_CALLBACK * GC_await_finalize_proc)(void * /* obj */); +GC_API void GC_CALL GC_set_await_finalize_proc(GC_await_finalize_proc); +GC_API GC_await_finalize_proc GC_CALL GC_get_await_finalize_proc(void); + /* Zero means no callback. The setter */ + /* and getter acquire the lock too. */ + +/* Returns !=0 if GC_invoke_finalizers has something to do. */ +/* Does not use any synchronization. */ +GC_API int GC_CALL GC_should_invoke_finalizers(void); + +GC_API int GC_CALL GC_invoke_finalizers(void); + /* Run finalizers for all objects that are ready to */ + /* be finalized. Return the number of finalizers */ + /* that were run. Normally this is also called */ + /* implicitly during some allocations. If */ + /* GC_finalize_on_demand is nonzero, it must be called */ + /* explicitly. */ + +/* Explicitly tell the collector that an object is reachable */ +/* at a particular program point. This prevents the argument */ +/* pointer from being optimized away, even it is otherwise no */ +/* longer needed. It should have no visible effect in the */ +/* absence of finalizers or disappearing links. But it may be */ +/* needed to prevent finalizers from running while the */ +/* associated external resource is still in use. */ +/* The function is sometimes called keep_alive in other */ +/* settings. */ +#if defined(__GNUC__) && !defined(__INTEL_COMPILER) +# define GC_reachable_here(ptr) \ + __asm__ __volatile__(" " : : "X"(ptr) : "memory") +#else + GC_API void GC_CALL GC_noop1(GC_word); +# define GC_reachable_here(ptr) GC_noop1((GC_word)(ptr)) +#endif + +/* GC_set_warn_proc can be used to redirect or filter warning messages. */ +/* p may not be a NULL pointer. msg is printf format string (arg must */ +/* match the format). Both the setter and the getter acquire the GC */ +/* lock (to avoid data races). In version 7.1 (and before), the setter */ +/* returned the old warn_proc value. */ +typedef void (GC_CALLBACK * GC_warn_proc)(char * /* msg */, + GC_word /* arg */); +GC_API void GC_CALL GC_set_warn_proc(GC_warn_proc /* p */) GC_ATTR_NONNULL(1); +/* GC_get_warn_proc returns the current warn_proc. */ +GC_API GC_warn_proc GC_CALL GC_get_warn_proc(void); + +/* GC_ignore_warn_proc may be used as an argument for GC_set_warn_proc */ +/* to suppress all warnings (unless statistics printing is turned on). */ +GC_API void GC_CALLBACK GC_ignore_warn_proc(char *, GC_word); + +/* Change file descriptor of GC log. Unavailable on some targets. */ +GC_API void GC_CALL GC_set_log_fd(int); + +/* abort_func is invoked on GC fatal aborts (just before OS-dependent */ +/* abort or exit(1) is called). Must be non-NULL. The default one */ +/* outputs msg to stderr provided msg is non-NULL. msg is NULL if */ +/* invoked before exit(1) otherwise msg is non-NULL (i.e., if invoked */ +/* before abort). Both the setter and getter acquire the GC lock. */ +/* Both the setter and getter are defined only if the library has been */ +/* compiled without SMALL_CONFIG. */ +typedef void (GC_CALLBACK * GC_abort_func)(const char * /* msg */); +GC_API void GC_CALL GC_set_abort_func(GC_abort_func) GC_ATTR_NONNULL(1); +GC_API GC_abort_func GC_CALL GC_get_abort_func(void); + +/* The following is intended to be used by a higher level */ +/* (e.g. Java-like) finalization facility. It is expected */ +/* that finalization code will arrange for hidden pointers to */ +/* disappear. Otherwise objects can be accessed after they */ +/* have been collected. */ +/* Note that putting pointers in atomic objects or in */ +/* non-pointer slots of "typed" objects is equivalent to */ +/* disguising them in this way, and may have other advantages. */ +typedef GC_word GC_hidden_pointer; +#define GC_HIDE_POINTER(p) (~(GC_hidden_pointer)(p)) +/* Converting a hidden pointer to a real pointer requires verifying */ +/* that the object still exists. This involves acquiring the */ +/* allocator lock to avoid a race with the collector. */ +#define GC_REVEAL_POINTER(p) ((void *)GC_HIDE_POINTER(p)) + +#if defined(I_HIDE_POINTERS) || defined(GC_I_HIDE_POINTERS) + /* This exists only for compatibility (the GC-prefixed symbols are */ + /* preferred for new code). */ +# define HIDE_POINTER(p) GC_HIDE_POINTER(p) +# define REVEAL_POINTER(p) GC_REVEAL_POINTER(p) +#endif + +typedef void * (GC_CALLBACK * GC_fn_type)(void * /* client_data */); +GC_API void * GC_CALL GC_call_with_alloc_lock(GC_fn_type /* fn */, + void * /* client_data */) GC_ATTR_NONNULL(1); + +/* These routines are intended to explicitly notify the collector */ +/* of new threads. Often this is unnecessary because thread creation */ +/* is implicitly intercepted by the collector, using header-file */ +/* defines, or linker-based interception. In the long run the intent */ +/* is to always make redundant registration safe. In the short run, */ +/* this is being implemented a platform at a time. */ +/* The interface is complicated by the fact that we probably will not */ +/* ever be able to automatically determine the stack base for thread */ +/* stacks on all platforms. */ + +/* Structure representing the base of a thread stack. On most */ +/* platforms this contains just a single address. */ +struct GC_stack_base { + void * mem_base; /* Base of memory stack. */ +# if defined(__ia64) || defined(__ia64__) || defined(_M_IA64) + void * reg_base; /* Base of separate register stack. */ +# endif +}; + +typedef void * (GC_CALLBACK * GC_stack_base_func)( + struct GC_stack_base * /* sb */, void * /* arg */); + +/* Call a function with a stack base structure corresponding to */ +/* somewhere in the GC_call_with_stack_base frame. This often can */ +/* be used to provide a sufficiently accurate stack base. And we */ +/* implement it everywhere. */ +GC_API void * GC_CALL GC_call_with_stack_base(GC_stack_base_func /* fn */, + void * /* arg */) GC_ATTR_NONNULL(1); + +#define GC_SUCCESS 0 +#define GC_DUPLICATE 1 /* Was already registered. */ +#define GC_NO_THREADS 2 /* No thread support in GC. */ + /* GC_NO_THREADS is not returned by any GC function anymore. */ +#define GC_UNIMPLEMENTED 3 /* Not yet implemented on this platform. */ +#define GC_NOT_FOUND 4 /* Requested link not found (returned */ + /* by GC_move_disappearing_link). */ + +#if defined(GC_DARWIN_THREADS) || defined(GC_WIN32_THREADS) + /* Use implicit thread registration and processing (via Win32 DllMain */ + /* or Darwin task_threads). Deprecated. Must be called before */ + /* GC_INIT() and other GC routines. Should be avoided if */ + /* GC_pthread_create, GC_beginthreadex (or GC_CreateThread) could be */ + /* called instead. Disables parallelized GC on Win32. */ + GC_API void GC_CALL GC_use_threads_discovery(void); +#endif + +#ifdef GC_THREADS + /* Suggest the GC to use the specific signal to suspend threads. */ + /* Has no effect after GC_init and on non-POSIX systems. */ + GC_API void GC_CALL GC_set_suspend_signal(int); + + /* Suggest the GC to use the specific signal to resume threads. */ + /* Has no effect after GC_init and on non-POSIX systems. */ + GC_API void GC_CALL GC_set_thr_restart_signal(int); + + /* Return the signal number (constant after initialization) used by */ + /* the GC to suspend threads on POSIX systems. Return -1 otherwise. */ + GC_API int GC_CALL GC_get_suspend_signal(void); + + /* Return the signal number (constant after initialization) used by */ + /* the garbage collector to restart (resume) threads on POSIX */ + /* systems. Return -1 otherwise. */ + GC_API int GC_CALL GC_get_thr_restart_signal(void); + + /* Restart marker threads after POSIX fork in child. Meaningless in */ + /* other situations. Should not be called if fork followed by exec. */ + GC_API void GC_CALL GC_start_mark_threads(void); + + /* Explicitly enable GC_register_my_thread() invocation. */ + /* Done implicitly if a GC thread-creation function is called (or */ + /* implicit thread registration is activated, or the collector is */ + /* compiled with GC_ALWAYS_MULTITHREADED defined). Otherwise, it */ + /* must be called from the main (or any previously registered) thread */ + /* between the collector initialization and the first explicit */ + /* registering of a thread (it should be called as late as possible). */ + GC_API void GC_CALL GC_allow_register_threads(void); + + /* Register the current thread, with the indicated stack base, as */ + /* a new thread whose stack(s) should be traced by the GC. If it */ + /* is not implicitly called by the GC, this must be called before a */ + /* thread can allocate garbage collected memory, or assign pointers */ + /* to the garbage collected heap. Once registered, a thread will be */ + /* stopped during garbage collections. */ + /* This call must be previously enabled (see above). */ + /* This should never be called from the main thread, where it is */ + /* always done implicitly. This is normally done implicitly if GC_ */ + /* functions are called to create the thread, e.g. by including gc.h */ + /* (which redefines some system functions) before calling the system */ + /* thread creation function. Nonetheless, thread cleanup routines */ + /* (e.g., pthread key destructor) typically require manual thread */ + /* registering (and unregistering) if pointers to GC-allocated */ + /* objects are manipulated inside. */ + /* It is also always done implicitly on some platforms if */ + /* GC_use_threads_discovery() is called at start-up. Except for the */ + /* latter case, the explicit call is normally required for threads */ + /* created by third-party libraries. */ + /* A manually registered thread requires manual unregistering. */ + /* Returns GC_SUCCESS on success, GC_DUPLICATE if already registered. */ + GC_API int GC_CALL GC_register_my_thread(const struct GC_stack_base *) + GC_ATTR_NONNULL(1); + + /* Return non-zero (TRUE) if and only if the calling thread is */ + /* registered with the garbage collector. */ + GC_API int GC_CALL GC_thread_is_registered(void); + + /* Notify the collector about the stack and the alt-stack of the */ + /* current thread. stack_start/size is used to determine the stack */ + /* boundaries when a thread is suspended while it is on an alt-stack. */ + GC_API void GC_CALL GC_register_altstack(void * /* stack_start */, + GC_word /* stack_size */, + void * /* altstack_base */, + GC_word /* altstack_size */); + + /* Unregister the current thread. Only an explicitly registered */ + /* thread (i.e. for which GC_register_my_thread() returns GC_SUCCESS) */ + /* is allowed (and required) to call this function. (As a special */ + /* exception, it is also allowed to once unregister the main thread.) */ + /* The thread may no longer allocate garbage collected memory or */ + /* manipulate pointers to the garbage collected heap after making */ + /* this call. Specifically, if it wants to return or otherwise */ + /* communicate a pointer to the garbage-collected heap to another */ + /* thread, it must do this before calling GC_unregister_my_thread, */ + /* most probably by saving it in a global data structure. Must not */ + /* be called inside a GC callback function (except for */ + /* GC_call_with_stack_base() one). */ + GC_API int GC_CALL GC_unregister_my_thread(void); +#endif /* GC_THREADS */ + +/* Wrapper for functions that are likely to block (or, at least, do not */ +/* allocate garbage collected memory and/or manipulate pointers to the */ +/* garbage collected heap) for an appreciable length of time. While fn */ +/* is running, the collector is said to be in the "inactive" state for */ +/* the current thread (this means that the thread is not suspended and */ +/* the thread's stack frames "belonging" to the functions in the */ +/* "inactive" state are not scanned during garbage collections). It is */ +/* allowed for fn to call GC_call_with_gc_active() (even recursively), */ +/* thus temporarily toggling the collector's state back to "active". */ +GC_API void * GC_CALL GC_do_blocking(GC_fn_type /* fn */, + void * /* client_data */) GC_ATTR_NONNULL(1); + +/* Call a function switching to the "active" state of the collector for */ +/* the current thread (i.e. the user function is allowed to call any */ +/* GC function and/or manipulate pointers to the garbage collected */ +/* heap). GC_call_with_gc_active() has the functionality opposite to */ +/* GC_do_blocking() one. It is assumed that the collector is already */ +/* initialized and the current thread is registered. fn may toggle */ +/* the collector thread's state temporarily to "inactive" one by using */ +/* GC_do_blocking. GC_call_with_gc_active() often can be used to */ +/* provide a sufficiently accurate stack base. */ +GC_API void * GC_CALL GC_call_with_gc_active(GC_fn_type /* fn */, + void * /* client_data */) GC_ATTR_NONNULL(1); + +/* Attempt to fill in the GC_stack_base structure with the stack base */ +/* for this thread. This appears to be required to implement anything */ +/* like the JNI AttachCurrentThread in an environment in which new */ +/* threads are not automatically registered with the collector. */ +/* It is also unfortunately hard to implement well on many platforms. */ +/* Returns GC_SUCCESS or GC_UNIMPLEMENTED. This function acquires the */ +/* GC lock on some platforms. */ +GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *) + GC_ATTR_NONNULL(1); + +/* The following routines are primarily intended for use with a */ +/* preprocessor which inserts calls to check C pointer arithmetic. */ +/* They indicate failure by invoking the corresponding _print_proc. */ + +/* Check that p and q point to the same object. */ +/* Fail conspicuously if they don't. */ +/* Returns the first argument. */ +/* Succeeds if neither p nor q points to the heap. */ +/* May succeed if both p and q point to between heap objects. */ +GC_API void * GC_CALL GC_same_obj(void * /* p */, void * /* q */); + +/* Checked pointer pre- and post- increment operations. Note that */ +/* the second argument is in units of bytes, not multiples of the */ +/* object size. This should either be invoked from a macro, or the */ +/* call should be automatically generated. */ +GC_API void * GC_CALL GC_pre_incr(void **, ptrdiff_t /* how_much */) + GC_ATTR_NONNULL(1); +GC_API void * GC_CALL GC_post_incr(void **, ptrdiff_t /* how_much */) + GC_ATTR_NONNULL(1); + +/* Check that p is visible */ +/* to the collector as a possibly pointer containing location. */ +/* If it isn't fail conspicuously. */ +/* Returns the argument in all cases. May erroneously succeed */ +/* in hard cases. (This is intended for debugging use with */ +/* untyped allocations. The idea is that it should be possible, though */ +/* slow, to add such a call to all indirect pointer stores.) */ +/* Currently useless for multi-threaded worlds. */ +GC_API void * GC_CALL GC_is_visible(void * /* p */); + +/* Check that if p is a pointer to a heap page, then it points to */ +/* a valid displacement within a heap object. */ +/* Fail conspicuously if this property does not hold. */ +/* Uninteresting with GC_all_interior_pointers. */ +/* Always returns its argument. */ +GC_API void * GC_CALL GC_is_valid_displacement(void * /* p */); + +/* Explicitly dump the GC state. This is most often called from the */ +/* debugger, or by setting the GC_DUMP_REGULARLY environment variable, */ +/* but it may be useful to call it from client code during debugging. */ +/* Defined only if the library has been compiled without NO_DEBUGGING. */ +GC_API void GC_CALL GC_dump(void); + +/* Dump information about each block of every GC memory section. */ +/* Defined only if the library has been compiled without NO_DEBUGGING. */ +GC_API void GC_CALL GC_dump_regions(void); + +/* Dump information about every registered disappearing link and */ +/* finalizable object. */ +/* Defined only if the library has been compiled without NO_DEBUGGING. */ +GC_API void GC_CALL GC_dump_finalization(void); + +/* Safer, but slow, pointer addition. Probably useful mainly with */ +/* a preprocessor. Useful only for heap pointers. */ +/* Only the macros without trailing digits are meant to be used */ +/* by clients. These are designed to model the available C pointer */ +/* arithmetic expressions. */ +/* Even then, these are probably more useful as */ +/* documentation than as part of the API. */ +/* Note that GC_PTR_ADD evaluates the first argument more than once. */ +#if defined(GC_DEBUG) && defined(__GNUC__) +# define GC_PTR_ADD3(x, n, type_of_result) \ + ((type_of_result)GC_same_obj((x)+(n), (x))) +# define GC_PRE_INCR3(x, n, type_of_result) \ + ((type_of_result)GC_pre_incr((void **)(&(x)), (n)*sizeof(*x))) +# define GC_POST_INCR3(x, n, type_of_result) \ + ((type_of_result)GC_post_incr((void **)(&(x)), (n)*sizeof(*x))) +# define GC_PTR_ADD(x, n) GC_PTR_ADD3(x, n, typeof(x)) +# define GC_PRE_INCR(x, n) GC_PRE_INCR3(x, n, typeof(x)) +# define GC_POST_INCR(x) GC_POST_INCR3(x, 1, typeof(x)) +# define GC_POST_DECR(x) GC_POST_INCR3(x, -1, typeof(x)) +#else /* !GC_DEBUG || !__GNUC__ */ + /* We can't do this right without typeof, which ANSI decided was not */ + /* sufficiently useful. Without it we resort to the non-debug version. */ + /* FIXME: This should eventually support C++0x decltype. */ +# define GC_PTR_ADD(x, n) ((x)+(n)) +# define GC_PRE_INCR(x, n) ((x) += (n)) +# define GC_POST_INCR(x) ((x)++) +# define GC_POST_DECR(x) ((x)--) +#endif /* !GC_DEBUG || !__GNUC__ */ + +/* Safer assignment of a pointer to a non-stack location. */ +#ifdef GC_DEBUG +# define GC_PTR_STORE(p, q) \ + (*(void **)GC_is_visible(p) = GC_is_valid_displacement(q)) +#else +# define GC_PTR_STORE(p, q) (*(p) = (q)) +#endif + +/* Functions called to report pointer checking errors */ +GC_API void (GC_CALLBACK * GC_same_obj_print_proc)(void * /* p */, + void * /* q */); +GC_API void (GC_CALLBACK * GC_is_valid_displacement_print_proc)(void *); +GC_API void (GC_CALLBACK * GC_is_visible_print_proc)(void *); + +#ifdef GC_PTHREADS + /* For pthread support, we generally need to intercept a number of */ + /* thread library calls. We do that here by macro defining them. */ +# include "gc_pthread_redirects.h" +#endif + +/* This returns a list of objects, linked through their first word. */ +/* Its use can greatly reduce lock contention problems, since the */ +/* allocation lock can be acquired and released many fewer times. */ +GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_many(size_t /* lb */); +#define GC_NEXT(p) (*(void * *)(p)) /* Retrieve the next element */ + /* in returned list. */ + +/* A filter function to control the scanning of dynamic libraries. */ +/* If implemented, called by GC before registering a dynamic library */ +/* (discovered by GC) section as a static data root (called only as */ +/* a last reason not to register). The filename of the library, the */ +/* address and the length of the memory region (section) are passed. */ +/* This routine should return nonzero if that region should be scanned. */ +/* Always called with the allocation lock held. Depending on the */ +/* platform, might be called with the "world" stopped. */ +typedef int (GC_CALLBACK * GC_has_static_roots_func)( + const char * /* dlpi_name */, + void * /* section_start */, + size_t /* section_size */); + +/* Register a new callback (a user-supplied filter) to control the */ +/* scanning of dynamic libraries. Replaces any previously registered */ +/* callback. May be 0 (means no filtering). May be unused on some */ +/* platforms (if the filtering is unimplemented or inappropriate). */ +GC_API void GC_CALL GC_register_has_static_roots_callback( + GC_has_static_roots_func); + +#if !defined(CPPCHECK) && !defined(GC_WINDOWS_H_INCLUDED) && defined(WINAPI) + /* windows.h is included before gc.h */ +# define GC_WINDOWS_H_INCLUDED +#endif + +#if defined(GC_WIN32_THREADS) \ + && (!defined(GC_PTHREADS) || defined(GC_BUILD) \ + || defined(GC_WINDOWS_H_INCLUDED)) + /* Note: for Cygwin and pthreads-win32, this is skipped */ + /* unless windows.h is included before gc.h. */ + +# if !defined(GC_NO_THREAD_DECLS) || defined(GC_BUILD) + +# ifdef __cplusplus + } /* Including windows.h in an extern "C" context no longer works. */ +# endif + +# if !defined(_WIN32_WCE) && !defined(__CEGCC__) +# include /* For _beginthreadex, _endthreadex */ +# endif + +# if defined(GC_BUILD) || !defined(GC_DONT_INCLUDE_WINDOWS_H) +# include +# define GC_WINDOWS_H_INCLUDED +# endif + +# ifdef __cplusplus + extern "C" { +# endif + +# ifdef GC_UNDERSCORE_STDCALL + /* Explicitly prefix exported/imported WINAPI (__stdcall) symbols */ + /* with '_' (underscore). Might be useful if MinGW/x86 is used. */ +# define GC_CreateThread _GC_CreateThread +# define GC_ExitThread _GC_ExitThread +# endif + +# ifndef DECLSPEC_NORETURN + /* Typically defined in winnt.h. */ +# ifdef GC_WINDOWS_H_INCLUDED +# define DECLSPEC_NORETURN /* empty */ +# else +# define DECLSPEC_NORETURN __declspec(noreturn) +# endif +# endif + +# if !defined(_UINTPTR_T) && !defined(_UINTPTR_T_DEFINED) \ + && !defined(UINTPTR_MAX) + typedef GC_word GC_uintptr_t; +# else + typedef uintptr_t GC_uintptr_t; +# endif + +# ifdef _WIN64 +# define GC_WIN32_SIZE_T GC_uintptr_t +# elif defined(GC_WINDOWS_H_INCLUDED) +# define GC_WIN32_SIZE_T DWORD +# else +# define GC_WIN32_SIZE_T unsigned long +# endif + +# ifdef GC_INSIDE_DLL + /* Export GC DllMain to be invoked from client DllMain. */ +# ifdef GC_UNDERSCORE_STDCALL +# define GC_DllMain _GC_DllMain +# endif +# ifdef GC_WINDOWS_H_INCLUDED + GC_API BOOL WINAPI GC_DllMain(HINSTANCE /* inst */, + ULONG /* reason */, + LPVOID /* reserved */); +# else + GC_API int __stdcall GC_DllMain(void *, unsigned long, void *); +# endif +# endif /* GC_INSIDE_DLL */ + + /* All threads must be created using GC_CreateThread or */ + /* GC_beginthreadex, or must explicitly call GC_register_my_thread */ + /* (and call GC_unregister_my_thread before thread termination), so */ + /* that they will be recorded in the thread table. For backward */ + /* compatibility, it is possible to build the GC with GC_DLL */ + /* defined, and to call GC_use_threads_discovery. This implicitly */ + /* registers all created threads, but appears to be less robust. */ + /* Currently the collector expects all threads to fall through and */ + /* terminate normally, or call GC_endthreadex() or GC_ExitThread, */ + /* so that the thread is properly unregistered. */ +# ifdef GC_WINDOWS_H_INCLUDED + GC_API HANDLE WINAPI GC_CreateThread( + LPSECURITY_ATTRIBUTES /* lpThreadAttributes */, + GC_WIN32_SIZE_T /* dwStackSize */, + LPTHREAD_START_ROUTINE /* lpStartAddress */, + LPVOID /* lpParameter */, DWORD /* dwCreationFlags */, + LPDWORD /* lpThreadId */); + + GC_API DECLSPEC_NORETURN void WINAPI GC_ExitThread( + DWORD /* dwExitCode */); +# else + struct _SECURITY_ATTRIBUTES; + GC_API void *__stdcall GC_CreateThread(struct _SECURITY_ATTRIBUTES *, + GC_WIN32_SIZE_T, + unsigned long (__stdcall *)(void *), + void *, unsigned long, unsigned long *); + GC_API DECLSPEC_NORETURN void __stdcall GC_ExitThread(unsigned long); +# endif + +# if !defined(_WIN32_WCE) && !defined(__CEGCC__) + GC_API GC_uintptr_t GC_CALL GC_beginthreadex( + void * /* security */, unsigned /* stack_size */, + unsigned (__stdcall *)(void *), + void * /* arglist */, unsigned /* initflag */, + unsigned * /* thrdaddr */); + + /* Note: _endthreadex() is not currently marked as no-return in */ + /* VC++ and MinGW headers, so we don't mark it neither. */ + GC_API void GC_CALL GC_endthreadex(unsigned /* retval */); +# endif /* !_WIN32_WCE */ + +# endif /* !GC_NO_THREAD_DECLS */ + +# ifdef GC_WINMAIN_REDIRECT + /* win32_threads.c implements the real WinMain(), which will start */ + /* a new thread to call GC_WinMain() after initializing the garbage */ + /* collector. */ +# define WinMain GC_WinMain +# endif + + /* For compatibility only. */ +# define GC_use_DllMain GC_use_threads_discovery + +# ifndef GC_NO_THREAD_REDIRECTS +# define CreateThread GC_CreateThread +# define ExitThread GC_ExitThread +# undef _beginthreadex +# define _beginthreadex GC_beginthreadex +# undef _endthreadex +# define _endthreadex GC_endthreadex +/* #define _beginthread { > "Please use _beginthreadex instead of _beginthread" < } */ +# endif /* !GC_NO_THREAD_REDIRECTS */ + +#endif /* GC_WIN32_THREADS */ + +/* Public setter and getter for switching "unmap as much as possible" */ +/* mode on(1) and off(0). Has no effect unless unmapping is turned on. */ +/* Has no effect on implicitly-initiated garbage collections. Initial */ +/* value is controlled by GC_FORCE_UNMAP_ON_GCOLLECT. The setter and */ +/* getter are unsynchronized. */ +GC_API void GC_CALL GC_set_force_unmap_on_gcollect(int); +GC_API int GC_CALL GC_get_force_unmap_on_gcollect(void); + +/* Fully portable code should call GC_INIT() from the main program */ +/* before making any other GC_ calls. On most platforms this is a */ +/* no-op and the collector self-initializes. But a number of */ +/* platforms make that too hard. */ +/* A GC_INIT call is required if the collector is built with */ +/* THREAD_LOCAL_ALLOC defined and the initial allocation call is not */ +/* to GC_malloc() or GC_malloc_atomic(). */ + +#if defined(__CYGWIN32__) || defined(__CYGWIN__) + /* Similarly gnu-win32 DLLs need explicit initialization from the */ + /* main program, as does AIX. */ +# ifdef __x86_64__ + /* Cygwin/x64 does not add leading underscore to symbols anymore. */ + extern int __data_start__[], __data_end__[]; + extern int __bss_start__[], __bss_end__[]; +# define GC_DATASTART ((GC_word)__data_start__ < (GC_word)__bss_start__ \ + ? (void *)__data_start__ : (void *)__bss_start__) +# define GC_DATAEND ((GC_word)__data_end__ > (GC_word)__bss_end__ \ + ? (void *)__data_end__ : (void *)__bss_end__) +# else + extern int _data_start__[], _data_end__[], _bss_start__[], _bss_end__[]; +# define GC_DATASTART ((GC_word)_data_start__ < (GC_word)_bss_start__ \ + ? (void *)_data_start__ : (void *)_bss_start__) +# define GC_DATAEND ((GC_word)_data_end__ > (GC_word)_bss_end__ \ + ? (void *)_data_end__ : (void *)_bss_end__) +# endif /* !__x86_64__ */ +# define GC_INIT_CONF_ROOTS GC_add_roots(GC_DATASTART, GC_DATAEND); \ + GC_gcollect() /* For blacklisting. */ + /* Required at least if GC is in a DLL. And doesn't hurt. */ +#elif defined(_AIX) + extern int _data[], _end[]; +# define GC_DATASTART ((void *)((ulong)_data)) +# define GC_DATAEND ((void *)((ulong)_end)) +# define GC_INIT_CONF_ROOTS GC_add_roots(GC_DATASTART, GC_DATAEND) +#elif (defined(PLATFORM_ANDROID) || defined(__ANDROID__)) \ + && !defined(GC_NOT_DLL) +# pragma weak _etext +# pragma weak __data_start +# pragma weak __dso_handle + extern int _etext[], __data_start[], __dso_handle[]; +# pragma weak __end__ + extern int __end__[], _end[]; + /* Explicitly register caller static data roots. Workaround for */ + /* __data_start: NDK "gold" linker might miss it or place it */ + /* incorrectly, __dso_handle is an alternative data start reference. */ + /* Workaround for _end: NDK Clang 3.5+ does not place it at correct */ + /* offset (as of NDK r10e) but "bfd" linker provides __end__ symbol */ + /* that could be used instead. */ +# define GC_INIT_CONF_ROOTS \ + (void)((GC_word)__data_start < (GC_word)_etext \ + && (GC_word)_etext < (GC_word)__dso_handle \ + ? (__end__ != 0 \ + ? (GC_add_roots(__dso_handle, __end__), 0) \ + : (GC_word)__dso_handle < (GC_word)_end \ + ? (GC_add_roots(__dso_handle, _end), 0) : 0) \ + : __data_start != 0 ? (__end__ != 0 \ + ? (GC_add_roots(__data_start, __end__), 0) \ + : (GC_word)__data_start < (GC_word)_end \ + ? (GC_add_roots(__data_start, _end), 0) : 0) : 0) +#else +# define GC_INIT_CONF_ROOTS /* empty */ +#endif + +#ifdef GC_DONT_EXPAND + /* Set GC_dont_expand to TRUE at start-up */ +# define GC_INIT_CONF_DONT_EXPAND GC_set_dont_expand(1) +#else +# define GC_INIT_CONF_DONT_EXPAND /* empty */ +#endif + +#ifdef GC_FORCE_UNMAP_ON_GCOLLECT + /* Turn on "unmap as much as possible on explicit GC" mode at start-up */ +# define GC_INIT_CONF_FORCE_UNMAP_ON_GCOLLECT \ + GC_set_force_unmap_on_gcollect(1) +#else +# define GC_INIT_CONF_FORCE_UNMAP_ON_GCOLLECT /* empty */ +#endif + +#ifdef GC_DONT_GC + /* This is for debugging only (useful if environment variables are */ + /* unsupported); cannot call GC_disable as goes before GC_init. */ +# define GC_INIT_CONF_MAX_RETRIES (void)(GC_dont_gc = 1) +#elif defined(GC_MAX_RETRIES) && !defined(CPPCHECK) + /* Set GC_max_retries to the desired value at start-up */ +# define GC_INIT_CONF_MAX_RETRIES GC_set_max_retries(GC_MAX_RETRIES) +#else +# define GC_INIT_CONF_MAX_RETRIES /* empty */ +#endif + +#if defined(GC_FREE_SPACE_DIVISOR) && !defined(CPPCHECK) + /* Set GC_free_space_divisor to the desired value at start-up */ +# define GC_INIT_CONF_FREE_SPACE_DIVISOR \ + GC_set_free_space_divisor(GC_FREE_SPACE_DIVISOR) +#else +# define GC_INIT_CONF_FREE_SPACE_DIVISOR /* empty */ +#endif + +#if defined(GC_FULL_FREQ) && !defined(CPPCHECK) + /* Set GC_full_freq to the desired value at start-up */ +# define GC_INIT_CONF_FULL_FREQ GC_set_full_freq(GC_FULL_FREQ) +#else +# define GC_INIT_CONF_FULL_FREQ /* empty */ +#endif + +#if defined(GC_TIME_LIMIT) && !defined(CPPCHECK) + /* Set GC_time_limit to the desired value at start-up */ +# define GC_INIT_CONF_TIME_LIMIT GC_set_time_limit(GC_TIME_LIMIT) +#else +# define GC_INIT_CONF_TIME_LIMIT /* empty */ +#endif + +#if defined(GC_SIG_SUSPEND) && defined(GC_THREADS) && !defined(CPPCHECK) +# define GC_INIT_CONF_SUSPEND_SIGNAL GC_set_suspend_signal(GC_SIG_SUSPEND) +#else +# define GC_INIT_CONF_SUSPEND_SIGNAL /* empty */ +#endif + +#if defined(GC_SIG_THR_RESTART) && defined(GC_THREADS) && !defined(CPPCHECK) +# define GC_INIT_CONF_THR_RESTART_SIGNAL \ + GC_set_thr_restart_signal(GC_SIG_THR_RESTART) +#else +# define GC_INIT_CONF_THR_RESTART_SIGNAL /* empty */ +#endif + +#if defined(GC_MAXIMUM_HEAP_SIZE) && !defined(CPPCHECK) + /* Limit the heap size to the desired value (useful for debugging). */ + /* The limit could be overridden either at the program start-up by */ + /* the similar environment variable or anytime later by the */ + /* corresponding API function call. */ +# define GC_INIT_CONF_MAXIMUM_HEAP_SIZE \ + GC_set_max_heap_size(GC_MAXIMUM_HEAP_SIZE) +#else +# define GC_INIT_CONF_MAXIMUM_HEAP_SIZE /* empty */ +#endif + +#ifdef GC_IGNORE_WARN + /* Turn off all warnings at start-up (after GC initialization) */ +# define GC_INIT_CONF_IGNORE_WARN GC_set_warn_proc(GC_ignore_warn_proc) +#else +# define GC_INIT_CONF_IGNORE_WARN /* empty */ +#endif + +#if defined(GC_INITIAL_HEAP_SIZE) && !defined(CPPCHECK) + /* Set heap size to the desired value at start-up */ +# define GC_INIT_CONF_INITIAL_HEAP_SIZE \ + { size_t heap_size = GC_get_heap_size(); \ + if (heap_size < (GC_INITIAL_HEAP_SIZE)) \ + (void)GC_expand_hp((GC_INITIAL_HEAP_SIZE) - heap_size); } +#else +# define GC_INIT_CONF_INITIAL_HEAP_SIZE /* empty */ +#endif + +/* Portable clients should call this at the program start-up. More */ +/* over, some platforms require this call to be done strictly from the */ +/* primordial thread. */ +#define GC_INIT() { GC_INIT_CONF_DONT_EXPAND; /* pre-init */ \ + GC_INIT_CONF_FORCE_UNMAP_ON_GCOLLECT; \ + GC_INIT_CONF_MAX_RETRIES; \ + GC_INIT_CONF_FREE_SPACE_DIVISOR; \ + GC_INIT_CONF_FULL_FREQ; \ + GC_INIT_CONF_TIME_LIMIT; \ + GC_INIT_CONF_SUSPEND_SIGNAL; \ + GC_INIT_CONF_THR_RESTART_SIGNAL; \ + GC_INIT_CONF_MAXIMUM_HEAP_SIZE; \ + GC_init(); /* real GC initialization */ \ + GC_INIT_CONF_ROOTS; /* post-init */ \ + GC_INIT_CONF_IGNORE_WARN; \ + GC_INIT_CONF_INITIAL_HEAP_SIZE; } + +/* win32S may not free all resources on process exit. */ +/* This explicitly deallocates the heap. */ +GC_API void GC_CALL GC_win32_free_heap(void); + +#if defined(__SYMBIAN32__) + void GC_init_global_static_roots(void); +#endif + +#if defined(_AMIGA) && !defined(GC_AMIGA_MAKINGLIB) + /* Allocation really goes through GC_amiga_allocwrapper_do. */ + void *GC_amiga_realloc(void *, size_t); +# define GC_realloc(a,b) GC_amiga_realloc(a,b) + void GC_amiga_set_toany(void (*)(void)); + extern int GC_amiga_free_space_divisor_inc; + extern void *(*GC_amiga_allocwrapper_do)(size_t, void *(GC_CALL *)(size_t)); +# define GC_malloc(a) \ + (*GC_amiga_allocwrapper_do)(a,GC_malloc) +# define GC_malloc_atomic(a) \ + (*GC_amiga_allocwrapper_do)(a,GC_malloc_atomic) +# define GC_malloc_uncollectable(a) \ + (*GC_amiga_allocwrapper_do)(a,GC_malloc_uncollectable) +# define GC_malloc_stubborn(a) \ + (*GC_amiga_allocwrapper_do)(a,GC_malloc_stubborn) +# define GC_malloc_atomic_uncollectable(a) \ + (*GC_amiga_allocwrapper_do)(a,GC_malloc_atomic_uncollectable) +# define GC_malloc_ignore_off_page(a) \ + (*GC_amiga_allocwrapper_do)(a,GC_malloc_ignore_off_page) +# define GC_malloc_atomic_ignore_off_page(a) \ + (*GC_amiga_allocwrapper_do)(a,GC_malloc_atomic_ignore_off_page) +#endif /* _AMIGA && !GC_AMIGA_MAKINGLIB */ + +#ifdef __cplusplus + } /* end of extern "C" */ +#endif + +#endif /* GC_H */ diff --git a/include/gc_allocator.h b/include/gc_allocator.h new file mode 100644 index 0000000..9d70ed5 --- /dev/null +++ b/include/gc_allocator.h @@ -0,0 +1,328 @@ +/* + * Copyright (c) 1996-1997 + * Silicon Graphics Computer Systems, Inc. + * + * Permission to use, copy, modify, distribute and sell this software + * and its documentation for any purpose is hereby granted without fee, + * provided that the above copyright notice appear in all copies and + * that both that copyright notice and this permission notice appear + * in supporting documentation. Silicon Graphics makes no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + * + * Copyright (c) 2002 + * Hewlett-Packard Company + * + * Permission to use, copy, modify, distribute and sell this software + * and its documentation for any purpose is hereby granted without fee, + * provided that the above copyright notice appear in all copies and + * that both that copyright notice and this permission notice appear + * in supporting documentation. Hewlett-Packard Company makes no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + */ + +/* + * This implements standard-conforming allocators that interact with + * the garbage collector. Gc_allocator allocates garbage-collectible + * objects of type T. Traceable_allocator allocates objects that + * are not themselves garbage collected, but are scanned by the + * collector for pointers to collectible objects. Traceable_alloc + * should be used for explicitly managed STL containers that may + * point to collectible objects. + * + * This code was derived from an earlier version of the GNU C++ standard + * library, which itself was derived from the SGI STL implementation. + * + * Ignore-off-page allocator: George T. Talbot + */ + +#ifndef GC_ALLOCATOR_H + +#define GC_ALLOCATOR_H + +#include "gc.h" +#include // for placement new + +#ifndef GC_ATTR_EXPLICIT +# if (__cplusplus >= 201103L) || defined(CPPCHECK) +# define GC_ATTR_EXPLICIT explicit +# else +# define GC_ATTR_EXPLICIT /* empty */ +# endif +#endif + +/* First some helpers to allow us to dispatch on whether or not a type + * is known to be pointer-free. + * These are private, except that the client may invoke the + * GC_DECLARE_PTRFREE macro. + */ + +struct GC_true_type {}; +struct GC_false_type {}; + +template +struct GC_type_traits { + GC_false_type GC_is_ptr_free; +}; + +# define GC_DECLARE_PTRFREE(T) \ +template<> struct GC_type_traits { GC_true_type GC_is_ptr_free; } + +GC_DECLARE_PTRFREE(char); +GC_DECLARE_PTRFREE(signed char); +GC_DECLARE_PTRFREE(unsigned char); +GC_DECLARE_PTRFREE(signed short); +GC_DECLARE_PTRFREE(unsigned short); +GC_DECLARE_PTRFREE(signed int); +GC_DECLARE_PTRFREE(unsigned int); +GC_DECLARE_PTRFREE(signed long); +GC_DECLARE_PTRFREE(unsigned long); +GC_DECLARE_PTRFREE(float); +GC_DECLARE_PTRFREE(double); +GC_DECLARE_PTRFREE(long double); +/* The client may want to add others. */ + +// In the following GC_Tp is GC_true_type if we are allocating a +// pointer-free object. +template +inline void * GC_selective_alloc(size_t n, GC_Tp, bool ignore_off_page) { + return ignore_off_page?GC_MALLOC_IGNORE_OFF_PAGE(n):GC_MALLOC(n); +} + +template <> +inline void * GC_selective_alloc(size_t n, GC_true_type, + bool ignore_off_page) { + return ignore_off_page? GC_MALLOC_ATOMIC_IGNORE_OFF_PAGE(n) + : GC_MALLOC_ATOMIC(n); +} + +/* Now the public gc_allocator class: + */ +template +class gc_allocator { +public: + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef GC_Tp* pointer; + typedef const GC_Tp* const_pointer; + typedef GC_Tp& reference; + typedef const GC_Tp& const_reference; + typedef GC_Tp value_type; + + template struct rebind { + typedef gc_allocator other; + }; + + gc_allocator() {} + gc_allocator(const gc_allocator&) throw() {} +# if !(GC_NO_MEMBER_TEMPLATES || 0 < _MSC_VER && _MSC_VER <= 1200) + // MSVC++ 6.0 do not support member templates + template GC_ATTR_EXPLICIT + gc_allocator(const gc_allocator&) throw() {} +# endif + ~gc_allocator() throw() {} + + pointer address(reference GC_x) const { return &GC_x; } + const_pointer address(const_reference GC_x) const { return &GC_x; } + + // GC_n is permitted to be 0. The C++ standard says nothing about what + // the return value is when GC_n == 0. + GC_Tp* allocate(size_type GC_n, const void* = 0) { + GC_type_traits traits; + return static_cast + (GC_selective_alloc(GC_n * sizeof(GC_Tp), + traits.GC_is_ptr_free, false)); + } + + // __p is not permitted to be a null pointer. + void deallocate(pointer __p, size_type /* GC_n */) + { GC_FREE(__p); } + + size_type max_size() const throw() + { return size_t(-1) / sizeof(GC_Tp); } + + void construct(pointer __p, const GC_Tp& __val) { new(__p) GC_Tp(__val); } + void destroy(pointer __p) { __p->~GC_Tp(); } +}; + +template<> +class gc_allocator { + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef void* pointer; + typedef const void* const_pointer; + typedef void value_type; + + template struct rebind { + typedef gc_allocator other; + }; +}; + + +template +inline bool operator==(const gc_allocator&, const gc_allocator&) +{ + return true; +} + +template +inline bool operator!=(const gc_allocator&, const gc_allocator&) +{ + return false; +} + + +/* Now the public gc_allocator_ignore_off_page class: + */ +template +class gc_allocator_ignore_off_page { +public: + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef GC_Tp* pointer; + typedef const GC_Tp* const_pointer; + typedef GC_Tp& reference; + typedef const GC_Tp& const_reference; + typedef GC_Tp value_type; + + template struct rebind { + typedef gc_allocator_ignore_off_page other; + }; + + gc_allocator_ignore_off_page() {} + gc_allocator_ignore_off_page(const gc_allocator_ignore_off_page&) throw() {} +# if !(GC_NO_MEMBER_TEMPLATES || 0 < _MSC_VER && _MSC_VER <= 1200) + // MSVC++ 6.0 do not support member templates + template GC_ATTR_EXPLICIT + gc_allocator_ignore_off_page(const gc_allocator_ignore_off_page&) + throw() {} +# endif + ~gc_allocator_ignore_off_page() throw() {} + + pointer address(reference GC_x) const { return &GC_x; } + const_pointer address(const_reference GC_x) const { return &GC_x; } + + // GC_n is permitted to be 0. The C++ standard says nothing about what + // the return value is when GC_n == 0. + GC_Tp* allocate(size_type GC_n, const void* = 0) { + GC_type_traits traits; + return static_cast + (GC_selective_alloc(GC_n * sizeof(GC_Tp), + traits.GC_is_ptr_free, true)); + } + + // __p is not permitted to be a null pointer. + void deallocate(pointer __p, size_type /* GC_n */) + { GC_FREE(__p); } + + size_type max_size() const throw() + { return size_t(-1) / sizeof(GC_Tp); } + + void construct(pointer __p, const GC_Tp& __val) { new(__p) GC_Tp(__val); } + void destroy(pointer __p) { __p->~GC_Tp(); } +}; + +template<> +class gc_allocator_ignore_off_page { + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef void* pointer; + typedef const void* const_pointer; + typedef void value_type; + + template struct rebind { + typedef gc_allocator_ignore_off_page other; + }; +}; + +template +inline bool operator==(const gc_allocator_ignore_off_page&, const gc_allocator_ignore_off_page&) +{ + return true; +} + +template +inline bool operator!=(const gc_allocator_ignore_off_page&, const gc_allocator_ignore_off_page&) +{ + return false; +} + +/* + * And the public traceable_allocator class. + */ + +// Note that we currently don't specialize the pointer-free case, since a +// pointer-free traceable container doesn't make that much sense, +// though it could become an issue due to abstraction boundaries. +template +class traceable_allocator { +public: + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef GC_Tp* pointer; + typedef const GC_Tp* const_pointer; + typedef GC_Tp& reference; + typedef const GC_Tp& const_reference; + typedef GC_Tp value_type; + + template struct rebind { + typedef traceable_allocator other; + }; + + traceable_allocator() throw() {} + traceable_allocator(const traceable_allocator&) throw() {} +# if !(GC_NO_MEMBER_TEMPLATES || 0 < _MSC_VER && _MSC_VER <= 1200) + // MSVC++ 6.0 do not support member templates + template GC_ATTR_EXPLICIT + traceable_allocator(const traceable_allocator&) throw() {} +# endif + ~traceable_allocator() throw() {} + + pointer address(reference GC_x) const { return &GC_x; } + const_pointer address(const_reference GC_x) const { return &GC_x; } + + // GC_n is permitted to be 0. The C++ standard says nothing about what + // the return value is when GC_n == 0. + GC_Tp* allocate(size_type GC_n, const void* = 0) { + return static_cast(GC_MALLOC_UNCOLLECTABLE(GC_n * sizeof(GC_Tp))); + } + + // __p is not permitted to be a null pointer. + void deallocate(pointer __p, size_type /* GC_n */) + { GC_FREE(__p); } + + size_type max_size() const throw() + { return size_t(-1) / sizeof(GC_Tp); } + + void construct(pointer __p, const GC_Tp& __val) { new(__p) GC_Tp(__val); } + void destroy(pointer __p) { __p->~GC_Tp(); } +}; + +template<> +class traceable_allocator { + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef void* pointer; + typedef const void* const_pointer; + typedef void value_type; + + template struct rebind { + typedef traceable_allocator other; + }; +}; + + +template +inline bool operator==(const traceable_allocator&, const traceable_allocator&) +{ + return true; +} + +template +inline bool operator!=(const traceable_allocator&, const traceable_allocator&) +{ + return false; +} + +#endif /* GC_ALLOCATOR_H */ diff --git a/include/gc_backptr.h b/include/gc_backptr.h new file mode 100644 index 0000000..c7e29d2 --- /dev/null +++ b/include/gc_backptr.h @@ -0,0 +1,98 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2009 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* + * This is a simple API to implement pointer back tracing, i.e. + * to answer questions such as "who is pointing to this" or + * "why is this object being retained by the collector" + * + * This API assumes that we have an ANSI C compiler. + * + * Most of these calls yield useful information on only after + * a garbage collection. Usually the client will first force + * a full collection and then gather information, preferably + * before much intervening allocation. + * + * The implementation of the interface is only about 99.9999% + * correct. It is intended to be good enough for profiling, + * but is not intended to be used with production code. + * + * Results are likely to be much more useful if all allocation is + * accomplished through the debugging allocators. + * + * The implementation idea is due to A. Demers. + */ + +#ifndef GC_BACKPTR_H +#define GC_BACKPTR_H + +#ifndef GC_H +# include "gc.h" +#endif + +#ifdef __cplusplus + extern "C" { +#endif + +/* Store information about the object referencing dest in *base_p */ +/* and *offset_p. */ +/* If multiple objects or roots point to dest, the one reported */ +/* will be the last on used by the garbage collector to trace the */ +/* object. */ +/* source is root ==> *base_p = address, *offset_p = 0 */ +/* source is heap object ==> *base_p != 0, *offset_p = offset */ +/* Returns 1 on success, 0 if source couldn't be determined. */ +/* Dest can be any address within a heap object. */ +typedef enum { + GC_UNREFERENCED, /* No reference info available. */ + GC_NO_SPACE, /* Dest not allocated with debug alloc. */ + GC_REFD_FROM_ROOT, /* Referenced directly by root *base_p. */ + GC_REFD_FROM_REG, /* Referenced from a register, i.e. */ + /* a root without an address. */ + GC_REFD_FROM_HEAP, /* Referenced from another heap obj. */ + GC_FINALIZER_REFD /* Finalizable and hence accessible. */ +} GC_ref_kind; + +GC_API GC_ref_kind GC_CALL GC_get_back_ptr_info(void * /* dest */, + void ** /* base_p */, size_t * /* offset_p */) + GC_ATTR_NONNULL(1); + +/* Generate a random heap address. */ +/* The resulting address is in the heap, but */ +/* not necessarily inside a valid object. */ +GC_API void * GC_CALL GC_generate_random_heap_address(void); + +/* Generate a random address inside a valid marked heap object. */ +GC_API void * GC_CALL GC_generate_random_valid_address(void); + +/* Force a garbage collection and generate a backtrace from a */ +/* random heap address. */ +/* This uses the GC logging mechanism (GC_printf) to produce */ +/* output. It can often be called from a debugger. The */ +/* source in dbg_mlc.c also serves as a sample client. */ +GC_API void GC_CALL GC_generate_random_backtrace(void); + +/* Print a backtrace from a specific address. Used by the */ +/* above. The client should call GC_gcollect() immediately */ +/* before invocation. */ +GC_API void GC_CALL GC_print_backtrace(void *) GC_ATTR_NONNULL(1); + +#ifdef __cplusplus + } /* end of extern "C" */ +#endif + +#endif /* GC_BACKPTR_H */ diff --git a/include/gc_config_macros.h b/include/gc_config_macros.h new file mode 100644 index 0000000..e8748f5 --- /dev/null +++ b/include/gc_config_macros.h @@ -0,0 +1,395 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2009 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* This should never be included directly; it is included only from gc.h. */ +/* We separate it only to make gc.h more suitable as documentation. */ +#if defined(GC_H) + +/* Some tests for old macros. These violate our namespace rules and */ +/* will disappear shortly. Use the GC_ names. */ +#if defined(SOLARIS_THREADS) || defined(_SOLARIS_THREADS) \ + || defined(_SOLARIS_PTHREADS) || defined(GC_SOLARIS_PTHREADS) + /* We no longer support old style Solaris threads. */ + /* GC_SOLARIS_THREADS now means pthreads. */ +# ifndef GC_SOLARIS_THREADS +# define GC_SOLARIS_THREADS +# endif +#endif +#if defined(IRIX_THREADS) +# define GC_IRIX_THREADS +#endif +#if defined(DGUX_THREADS) && !defined(GC_DGUX386_THREADS) +# define GC_DGUX386_THREADS +#endif +#if defined(AIX_THREADS) +# define GC_AIX_THREADS +#endif +#if defined(HPUX_THREADS) +# define GC_HPUX_THREADS +#endif +#if defined(OSF1_THREADS) +# define GC_OSF1_THREADS +#endif +#if defined(LINUX_THREADS) +# define GC_LINUX_THREADS +#endif +#if defined(WIN32_THREADS) +# define GC_WIN32_THREADS +#endif +#if defined(RTEMS_THREADS) +# define GC_RTEMS_PTHREADS +#endif +#if defined(USE_LD_WRAP) +# define GC_USE_LD_WRAP +#endif + +#if defined(GC_WIN32_PTHREADS) && !defined(GC_WIN32_THREADS) + /* Using pthreads-win32 library (or other Win32 implementation). */ +# define GC_WIN32_THREADS +#endif + +#if defined(GC_AIX_THREADS) || defined(GC_DARWIN_THREADS) \ + || defined(GC_DGUX386_THREADS) || defined(GC_FREEBSD_THREADS) \ + || defined(GC_GNU_THREADS) || defined(GC_HPUX_THREADS) \ + || defined(GC_IRIX_THREADS) || defined(GC_LINUX_THREADS) \ + || defined(GC_NETBSD_THREADS) || defined(GC_OPENBSD_THREADS) \ + || defined(GC_OSF1_THREADS) || defined(GC_SOLARIS_THREADS) \ + || defined(GC_WIN32_THREADS) || defined(GC_RTEMS_PTHREADS) +# ifndef GC_THREADS +# define GC_THREADS +# endif +#elif defined(GC_THREADS) +# if defined(__linux__) +# define GC_LINUX_THREADS +# endif +# if !defined(__linux__) && (defined(_PA_RISC1_1) || defined(_PA_RISC2_0) \ + || defined(hppa) || defined(__HPPA)) \ + || (defined(__ia64) && defined(_HPUX_SOURCE)) +# define GC_HPUX_THREADS +# endif +# if !defined(__linux__) && (defined(__alpha) || defined(__alpha__)) +# define GC_OSF1_THREADS +# endif +# if defined(__mips) && !defined(__linux__) +# define GC_IRIX_THREADS +# endif +# if defined(__sparc) && !defined(__linux__) \ + || ((defined(sun) || defined(__sun)) \ + && (defined(i386) || defined(__i386__) \ + || defined(__amd64) || defined(__amd64__))) +# define GC_SOLARIS_THREADS +# elif defined(__APPLE__) && defined(__MACH__) +# define GC_DARWIN_THREADS +# elif defined(__OpenBSD__) +# define GC_OPENBSD_THREADS +# elif !defined(GC_LINUX_THREADS) && !defined(GC_HPUX_THREADS) \ + && !defined(GC_OSF1_THREADS) && !defined(GC_IRIX_THREADS) + /* FIXME: Should we really need for FreeBSD and NetBSD to check */ + /* that no other GC_xxx_THREADS macro is set? */ +# if defined(__FreeBSD__) || defined(__DragonFly__) +# define GC_FREEBSD_THREADS +# elif defined(__NetBSD__) +# define GC_NETBSD_THREADS +# endif +# endif +# if defined(DGUX) && (defined(i386) || defined(__i386__)) +# define GC_DGUX386_THREADS +# endif +# if defined(_AIX) +# define GC_AIX_THREADS +# endif +# if (defined(_WIN32) || defined(_MSC_VER) || defined(__BORLANDC__) \ + || defined(__CYGWIN32__) || defined(__CYGWIN__) || defined(__CEGCC__) \ + || defined(_WIN32_WCE) || defined(__MINGW32__)) \ + && !defined(GC_WIN32_THREADS) + /* Either posix or native Win32 threads. */ +# define GC_WIN32_THREADS +# endif +# if defined(__rtems__) && (defined(i386) || defined(__i386__)) +# define GC_RTEMS_PTHREADS +# endif +#endif /* GC_THREADS */ + +#undef GC_PTHREADS +#if (!defined(GC_WIN32_THREADS) || defined(GC_WIN32_PTHREADS) \ + || defined(__CYGWIN32__) || defined(__CYGWIN__)) && defined(GC_THREADS) + /* Posix threads. */ +# define GC_PTHREADS +#endif + +#if !defined(_PTHREADS) && defined(GC_NETBSD_THREADS) +# define _PTHREADS +#endif + +#if defined(GC_DGUX386_THREADS) && !defined(_POSIX4A_DRAFT10_SOURCE) +# define _POSIX4A_DRAFT10_SOURCE 1 +#endif + +#if !defined(_REENTRANT) && defined(GC_PTHREADS) && !defined(GC_WIN32_THREADS) + /* Better late than never. This fails if system headers that depend */ + /* on this were previously included. */ +# define _REENTRANT +#endif + +#define __GC +#if !defined(_WIN32_WCE) || defined(__GNUC__) +# include +# if defined(__MINGW32__) && !defined(_WIN32_WCE) +# include + /* We mention uintptr_t. */ + /* Perhaps this should be included in pure msft environments */ + /* as well? */ +# endif +#else /* _WIN32_WCE */ + /* Yet more kludges for WinCE. */ +# include /* size_t is defined here */ +# ifndef _PTRDIFF_T_DEFINED + /* ptrdiff_t is not defined */ +# define _PTRDIFF_T_DEFINED + typedef long ptrdiff_t; +# endif +#endif /* _WIN32_WCE */ + +#if !defined(GC_NOT_DLL) && !defined(GC_DLL) \ + && ((defined(_DLL) && !defined(__GNUC__)) \ + || (defined(DLL_EXPORT) && defined(GC_BUILD))) +# define GC_DLL +#endif + +#if defined(GC_DLL) && !defined(GC_API) + +# if defined(__MINGW32__) || defined(__CEGCC__) +# if defined(GC_BUILD) || defined(__MINGW32_DELAY_LOAD__) +# define GC_API __declspec(dllexport) +# else +# define GC_API __declspec(dllimport) +# endif + +# elif defined(_MSC_VER) || defined(__DMC__) || defined(__BORLANDC__) \ + || defined(__CYGWIN__) +# ifdef GC_BUILD +# define GC_API extern __declspec(dllexport) +# else +# define GC_API __declspec(dllimport) +# endif + +# elif defined(__WATCOMC__) +# ifdef GC_BUILD +# define GC_API extern __declspec(dllexport) +# else +# define GC_API extern __declspec(dllimport) +# endif + +# elif defined(__SYMBIAN32__) +# ifdef GC_BUILD +# define GC_API extern EXPORT_C +# else +# define GC_API extern IMPORT_C +# endif + +# elif defined(__GNUC__) + /* Only matters if used in conjunction with -fvisibility=hidden option. */ +# if defined(GC_BUILD) && !defined(GC_NO_VISIBILITY) \ + && (__GNUC__ >= 4 || defined(GC_VISIBILITY_HIDDEN_SET)) +# define GC_API extern __attribute__((__visibility__("default"))) +# endif +# endif +#endif /* GC_DLL */ + +#ifndef GC_API +# define GC_API extern +#endif + +#ifndef GC_CALL +# define GC_CALL +#endif + +#ifndef GC_CALLBACK +# define GC_CALLBACK GC_CALL +#endif + +#ifndef GC_ATTR_MALLOC + /* 'malloc' attribute should be used for all malloc-like functions */ + /* (to tell the compiler that a function may be treated as if any */ + /* non-NULL pointer it returns cannot alias any other pointer valid */ + /* when the function returns). If the client code violates this rule */ + /* by using custom GC_oom_func then define GC_OOM_FUNC_RETURNS_ALIAS. */ +# ifdef GC_OOM_FUNC_RETURNS_ALIAS +# define GC_ATTR_MALLOC /* empty */ +# elif defined(__GNUC__) && (__GNUC__ > 3 \ + || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) +# define GC_ATTR_MALLOC __attribute__((__malloc__)) +# elif defined(_MSC_VER) && _MSC_VER >= 1400 +# define GC_ATTR_MALLOC __declspec(noalias) __declspec(restrict) +# else +# define GC_ATTR_MALLOC +# endif +#endif + +#ifndef GC_ATTR_ALLOC_SIZE + /* 'alloc_size' attribute improves __builtin_object_size correctness. */ + /* Only single-argument form of 'alloc_size' attribute is used. */ +# ifdef __clang__ +# if __has_attribute(__alloc_size__) +# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum))) +# else +# define GC_ATTR_ALLOC_SIZE(argnum) /* empty */ +# endif +# elif __GNUC__ > 4 \ + || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3 && !defined(__ICC)) +# define GC_ATTR_ALLOC_SIZE(argnum) __attribute__((__alloc_size__(argnum))) +# else +# define GC_ATTR_ALLOC_SIZE(argnum) /* empty */ +# endif +#endif + +#ifndef GC_ATTR_NONNULL +# if defined(__GNUC__) && __GNUC__ >= 4 +# define GC_ATTR_NONNULL(argnum) __attribute__((__nonnull__(argnum))) +# else +# define GC_ATTR_NONNULL(argnum) /* empty */ +# endif +#endif + +#ifndef GC_ATTR_DEPRECATED +# ifdef GC_BUILD +# undef GC_ATTR_DEPRECATED +# define GC_ATTR_DEPRECATED /* empty */ +# elif defined(__GNUC__) && __GNUC__ >= 4 +# define GC_ATTR_DEPRECATED __attribute__((__deprecated__)) +# elif defined(_MSC_VER) && _MSC_VER >= 1200 +# define GC_ATTR_DEPRECATED __declspec(deprecated) +# else +# define GC_ATTR_DEPRECATED /* empty */ +# endif +#endif + +#if defined(__sgi) && !defined(__GNUC__) && _COMPILER_VERSION >= 720 +# define GC_ADD_CALLER +# define GC_RETURN_ADDR (GC_word)__return_address +#endif + +#if defined(__linux__) || defined(__GLIBC__) +# if !defined(__native_client__) +# include +# endif +# if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1 || __GLIBC__ > 2) \ + && !defined(__ia64__) \ + && !defined(GC_MISSING_EXECINFO_H) \ + && !defined(GC_HAVE_BUILTIN_BACKTRACE) +# define GC_HAVE_BUILTIN_BACKTRACE +# endif +# if defined(__i386__) || defined(__amd64__) || defined(__x86_64__) +# define GC_CAN_SAVE_CALL_STACKS +# endif +#endif /* GLIBC */ + +#if defined(_MSC_VER) && _MSC_VER >= 1200 /* version 12.0+ (MSVC 6.0+) */ \ + && !defined(_AMD64_) && !defined(_M_X64) && !defined(_WIN32_WCE) \ + && !defined(GC_HAVE_NO_BUILTIN_BACKTRACE) \ + && !defined(GC_HAVE_BUILTIN_BACKTRACE) +# define GC_HAVE_BUILTIN_BACKTRACE +#endif + +#if defined(GC_HAVE_BUILTIN_BACKTRACE) && !defined(GC_CAN_SAVE_CALL_STACKS) +# define GC_CAN_SAVE_CALL_STACKS +#endif + +#if defined(__sparc__) +# define GC_CAN_SAVE_CALL_STACKS +#endif + +/* If we're on a platform on which we can't save call stacks, but */ +/* gcc is normally used, we go ahead and define GC_ADD_CALLER. */ +/* We make this decision independent of whether gcc is actually being */ +/* used, in order to keep the interface consistent, and allow mixing */ +/* of compilers. */ +/* This may also be desirable if it is possible but expensive to */ +/* retrieve the call chain. */ +#if (defined(__linux__) || defined(__NetBSD__) || defined(__OpenBSD__) \ + || defined(__FreeBSD__) || defined(__DragonFly__) \ + || defined(PLATFORM_ANDROID) || defined(__ANDROID__)) \ + && !defined(GC_CAN_SAVE_CALL_STACKS) +# define GC_ADD_CALLER +# if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) + /* gcc knows how to retrieve return address, but we don't know */ + /* how to generate call stacks. */ +# define GC_RETURN_ADDR (GC_word)__builtin_return_address(0) +# if (__GNUC__ >= 4) && (defined(__i386__) || defined(__amd64__) \ + || defined(__x86_64__) /* and probably others... */) +# define GC_HAVE_RETURN_ADDR_PARENT +# define GC_RETURN_ADDR_PARENT \ + (GC_word)__builtin_extract_return_addr(__builtin_return_address(1)) +# endif +# else + /* Just pass 0 for gcc compatibility. */ +# define GC_RETURN_ADDR 0 +# endif +#endif /* !GC_CAN_SAVE_CALL_STACKS */ + +#ifdef GC_PTHREADS + +# if (defined(GC_DARWIN_THREADS) || defined(GC_WIN32_PTHREADS) \ + || defined(__native_client__) || defined(GC_RTEMS_PTHREADS)) \ + && !defined(GC_NO_DLOPEN) + /* Either there is no dlopen() or we do not need to intercept it. */ +# define GC_NO_DLOPEN +# endif + +# if (defined(GC_DARWIN_THREADS) || defined(GC_WIN32_PTHREADS) \ + || defined(GC_OPENBSD_THREADS) || defined(__native_client__)) \ + && !defined(GC_NO_PTHREAD_SIGMASK) + /* Either there is no pthread_sigmask() or no need to intercept it. */ +# define GC_NO_PTHREAD_SIGMASK +# endif + +# if defined(__native_client__) + /* At present, NaCl pthread_create() prototype does not have */ + /* "const" for its "attr" argument; also, NaCl pthread_exit() one */ + /* does not have "noreturn" attribute. */ +# ifndef GC_PTHREAD_CREATE_CONST +# define GC_PTHREAD_CREATE_CONST /* empty */ +# endif +# ifndef GC_HAVE_PTHREAD_EXIT +# define GC_HAVE_PTHREAD_EXIT +# define GC_PTHREAD_EXIT_ATTRIBUTE /* empty */ +# endif +# endif + +# if !defined(GC_HAVE_PTHREAD_EXIT) \ + && !defined(PLATFORM_ANDROID) && !defined(__ANDROID__) \ + && (defined(GC_LINUX_THREADS) || defined(GC_SOLARIS_THREADS)) +# define GC_HAVE_PTHREAD_EXIT + /* Intercept pthread_exit on Linux and Solaris. */ +# if defined(__GNUC__) /* since GCC v2.7 */ +# define GC_PTHREAD_EXIT_ATTRIBUTE __attribute__((__noreturn__)) +# elif defined(__NORETURN) /* used in Solaris */ +# define GC_PTHREAD_EXIT_ATTRIBUTE __NORETURN +# else +# define GC_PTHREAD_EXIT_ATTRIBUTE /* empty */ +# endif +# endif + +# if (!defined(GC_HAVE_PTHREAD_EXIT) || defined(__native_client__)) \ + && !defined(GC_NO_PTHREAD_CANCEL) + /* Either there is no pthread_cancel() or no need to intercept it. */ +# define GC_NO_PTHREAD_CANCEL +# endif + +#endif /* GC_PTHREADS */ + +#endif diff --git a/include/gc_cpp.h b/include/gc_cpp.h new file mode 100644 index 0000000..6363f26 --- /dev/null +++ b/include/gc_cpp.h @@ -0,0 +1,496 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program for any + * purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is + * granted, provided the above notices are retained, and a notice that + * the code was modified is included with the above copyright notice. + */ + +#ifndef GC_CPP_H +#define GC_CPP_H + +/**************************************************************************** +C++ Interface to the Boehm Collector + + John R. Ellis and Jesse Hull + +This interface provides access to the Boehm collector. It provides +basic facilities similar to those described in "Safe, Efficient +Garbage Collection for C++", by John R. Ellis and David L. Detlefs +(ftp://ftp.parc.xerox.com/pub/ellis/gc). + +All heap-allocated objects are either "collectible" or +"uncollectible". Programs must explicitly delete uncollectible +objects, whereas the garbage collector will automatically delete +collectible objects when it discovers them to be inaccessible. +Collectible objects may freely point at uncollectible objects and vice +versa. + +Objects allocated with the built-in "::operator new" are uncollectible. + +Objects derived from class "gc" are collectible. For example: + + class A: public gc {...}; + A* a = new A; // a is collectible. + +Collectible instances of non-class types can be allocated using the GC +(or UseGC) placement: + + typedef int A[ 10 ]; + A* a = new (GC) A; + +Uncollectible instances of classes derived from "gc" can be allocated +using the NoGC placement: + + class A: public gc {...}; + A* a = new (NoGC) A; // a is uncollectible. + +The new(PointerFreeGC) syntax allows the allocation of collectible +objects that are not scanned by the collector. This useful if you +are allocating compressed data, bitmaps, or network packets. (In +the latter case, it may remove danger of unfriendly network packets +intentionally containing values that cause spurious memory retention.) + +Both uncollectible and collectible objects can be explicitly deleted +with "delete", which invokes an object's destructors and frees its +storage immediately. + +A collectible object may have a clean-up function, which will be +invoked when the collector discovers the object to be inaccessible. +An object derived from "gc_cleanup" or containing a member derived +from "gc_cleanup" has a default clean-up function that invokes the +object's destructors. Explicit clean-up functions may be specified as +an additional placement argument: + + A* a = ::new (GC, MyCleanup) A; + +An object is considered "accessible" by the collector if it can be +reached by a path of pointers from static variables, automatic +variables of active functions, or from some object with clean-up +enabled; pointers from an object to itself are ignored. + +Thus, if objects A and B both have clean-up functions, and A points at +B, B is considered accessible. After A's clean-up is invoked and its +storage released, B will then become inaccessible and will have its +clean-up invoked. If A points at B and B points to A, forming a +cycle, then that's considered a storage leak, and neither will be +collectible. See the interface gc.h for low-level facilities for +handling such cycles of objects with clean-up. + +The collector cannot guarantee that it will find all inaccessible +objects. In practice, it finds almost all of them. + + +Cautions: + +1. Be sure the collector has been augmented with "make c++" or +"--enable-cplusplus". + +2. If your compiler supports the new "operator new[]" syntax, then +add -DGC_OPERATOR_NEW_ARRAY to the Makefile. + +If your compiler doesn't support "operator new[]", beware that an +array of type T, where T is derived from "gc", may or may not be +allocated as a collectible object (it depends on the compiler). Use +the explicit GC placement to make the array collectible. For example: + + class A: public gc {...}; + A* a1 = new A[ 10 ]; // collectible or uncollectible? + A* a2 = new (GC) A[ 10 ]; // collectible. + +3. The destructors of collectible arrays of objects derived from +"gc_cleanup" will not be invoked properly. For example: + + class A: public gc_cleanup {...}; + A* a = new (GC) A[ 10 ]; // destructors not invoked correctly + +Typically, only the destructor for the first element of the array will +be invoked when the array is garbage-collected. To get all the +destructors of any array executed, you must supply an explicit +clean-up function: + + A* a = new (GC, MyCleanUp) A[ 10 ]; + +(Implementing clean-up of arrays correctly, portably, and in a way +that preserves the correct exception semantics requires a language +extension, e.g. the "gc" keyword.) + +4. Compiler bugs (now hopefully history): + +* Solaris 2's CC (SC3.0) doesn't implement t->~T() correctly, so the +destructors of classes derived from gc_cleanup won't be invoked. +You'll have to explicitly register a clean-up function with +new-placement syntax. + +* Evidently cfront 3.0 does not allow destructors to be explicitly +invoked using the ANSI-conforming syntax t->~T(). If you're using +cfront 3.0, you'll have to comment out the class gc_cleanup, which +uses explicit invocation. + +5. GC name conflicts: + +Many other systems seem to use the identifier "GC" as an abbreviation +for "Graphics Context". Since version 5.0, GC placement has been replaced +by UseGC. GC is an alias for UseGC, unless GC_NAME_CONFLICT is defined. + +****************************************************************************/ + +#include "gc.h" + +#ifdef GC_NAMESPACE +# define GC_NS_QUALIFY(T) boehmgc::T +#else +# define GC_NS_QUALIFY(T) T +#endif + +#ifndef THINK_CPLUS +# define GC_cdecl GC_CALLBACK +#else +# define GC_cdecl _cdecl +#endif + +#if !defined(GC_NO_OPERATOR_NEW_ARRAY) \ + && !defined(_ENABLE_ARRAYNEW) /* Digimars */ \ + && (defined(__BORLANDC__) && (__BORLANDC__ < 0x450) \ + || (defined(__GNUC__) && \ + (__GNUC__ < 2 || __GNUC__ == 2 && __GNUC_MINOR__ < 6)) \ + || (defined(_MSC_VER) && _MSC_VER <= 1020) \ + || (defined(__WATCOMC__) && __WATCOMC__ < 1050)) +# define GC_NO_OPERATOR_NEW_ARRAY +#endif + +#if !defined(GC_NO_OPERATOR_NEW_ARRAY) && !defined(GC_OPERATOR_NEW_ARRAY) +# define GC_OPERATOR_NEW_ARRAY +#endif + +#if (!defined(__BORLANDC__) || __BORLANDC__ > 0x0620) \ + && ! defined (__sgi) && ! defined(__WATCOMC__) \ + && (!defined(_MSC_VER) || _MSC_VER > 1020) +# define GC_PLACEMENT_DELETE +#endif + +#ifdef GC_NAMESPACE +namespace boehmgc +{ +#endif + +enum GCPlacement +{ + UseGC, +# ifndef GC_NAME_CONFLICT + GC = UseGC, +# endif + NoGC, + PointerFreeGC +# ifdef GC_ATOMIC_UNCOLLECTABLE + , PointerFreeNoGC +# endif +}; + +/** + * Instances of classes derived from "gc" will be allocated in the collected + * heap by default, unless an explicit NoGC placement is specified. + */ +class gc +{ +public: + inline void* operator new(size_t size); + inline void* operator new(size_t size, GCPlacement gcp); + inline void* operator new(size_t size, void* p); + // Must be redefined here, since the other overloadings hide + // the global definition. + inline void operator delete(void* obj); + +# ifdef GC_PLACEMENT_DELETE + inline void operator delete(void*, GCPlacement); + // Called if construction fails. + inline void operator delete(void*, void*); +# endif // GC_PLACEMENT_DELETE + +# ifdef GC_OPERATOR_NEW_ARRAY + inline void* operator new[](size_t size); + inline void* operator new[](size_t size, GCPlacement gcp); + inline void* operator new[](size_t size, void* p); + inline void operator delete[](void* obj); +# ifdef GC_PLACEMENT_DELETE + inline void operator delete[](void*, GCPlacement); + inline void operator delete[](void*, void*); +# endif +# endif // GC_OPERATOR_NEW_ARRAY +}; + +/** + * Instances of classes derived from "gc_cleanup" will be allocated + * in the collected heap by default. When the collector discovers + * an inaccessible object derived from "gc_cleanup" or containing + * a member derived from "gc_cleanup", its destructors will be invoked. + */ +class gc_cleanup: virtual public gc +{ +public: + inline gc_cleanup(); + inline virtual ~gc_cleanup(); + +private: + inline static void GC_cdecl cleanup(void* obj, void* clientData); +}; + +extern "C" { + typedef void (GC_CALLBACK * GCCleanUpFunc)(void* obj, void* clientData); +} + +#ifdef GC_NAMESPACE +} +#endif + +#ifdef _MSC_VER + // Disable warning that "no matching operator delete found; memory will + // not be freed if initialization throws an exception" +# pragma warning(disable:4291) +#endif + +inline void* operator new(size_t size, GC_NS_QUALIFY(GCPlacement) gcp, + GC_NS_QUALIFY(GCCleanUpFunc) cleanup = 0, + void* clientData = 0); + // Allocates a collectible or uncollectible object, according to the + // value of "gcp". + // + // For collectible objects, if "cleanup" is non-null, then when the + // allocated object "obj" becomes inaccessible, the collector will + // invoke the function "cleanup(obj, clientData)" but will not + // invoke the object's destructors. It is an error to explicitly + // delete an object allocated with a non-null "cleanup". + // + // It is an error to specify a non-null "cleanup" with NoGC or for + // classes derived from "gc_cleanup" or containing members derived + // from "gc_cleanup". + +#ifdef GC_PLACEMENT_DELETE + inline void operator delete(void*, GC_NS_QUALIFY(GCPlacement), + GC_NS_QUALIFY(GCCleanUpFunc), void*); +#endif + +#ifdef _MSC_VER + // The following ensures that the system default operator new[] does not + // get undefined, which is what seems to happen on VC++ 6 for some reason + // if we define a multi-argument operator new[]. + // There seems to be no way to redirect new in this environment without + // including this everywhere. + // Inlining done to avoid mix up of new and delete operators by VC++ 9 (due + // to arbitrary ordering during linking). + +# if _MSC_VER > 1020 + inline void* operator new[](size_t size) + { + return GC_MALLOC_UNCOLLECTABLE(size); + } + + inline void operator delete[](void* obj) + { + GC_FREE(obj); + } +# endif + + inline void* operator new(size_t size) + { + return GC_MALLOC_UNCOLLECTABLE(size); + } + + inline void operator delete(void* obj) + { + GC_FREE(obj); + } + + // This new operator is used by VC++ in case of Debug builds: +# ifdef GC_DEBUG + inline void* operator new(size_t size, int /* nBlockUse */, + const char* szFileName, int nLine) + { + return GC_debug_malloc_uncollectable(size, szFileName, nLine); + } +# else + inline void* operator new(size_t size, int /* nBlockUse */, + const char* /* szFileName */, int /* nLine */) + { + return GC_malloc_uncollectable(size); + } +# endif /* !GC_DEBUG */ + +# if _MSC_VER > 1020 + // This new operator is used by VC++ 7+ in Debug builds: + inline void* operator new[](size_t size, int nBlockUse, + const char* szFileName, int nLine) + { + return operator new(size, nBlockUse, szFileName, nLine); + } +# endif + +#endif // _MSC_VER + +#ifdef GC_OPERATOR_NEW_ARRAY + // The operator new for arrays, identical to the above. + inline void* operator new[](size_t size, GC_NS_QUALIFY(GCPlacement) gcp, + GC_NS_QUALIFY(GCCleanUpFunc) cleanup = 0, + void* clientData = 0); +#endif // GC_OPERATOR_NEW_ARRAY + +/* Inline implementation */ + +#ifdef GC_NAMESPACE +namespace boehmgc +{ +#endif + +inline void* gc::operator new(size_t size) +{ + return GC_MALLOC(size); +} + +inline void* gc::operator new(size_t size, GCPlacement gcp) +{ + switch (gcp) { + case UseGC: + return GC_MALLOC(size); + case PointerFreeGC: + return GC_MALLOC_ATOMIC(size); +# ifdef GC_ATOMIC_UNCOLLECTABLE + case PointerFreeNoGC: + return GC_MALLOC_ATOMIC_UNCOLLECTABLE(size); +# endif + case NoGC: + default: + return GC_MALLOC_UNCOLLECTABLE(size); + } +} + +inline void* gc::operator new(size_t /* size */, void* p) +{ + return p; +} + +inline void gc::operator delete(void* obj) +{ + GC_FREE(obj); +} + +#ifdef GC_PLACEMENT_DELETE + inline void gc::operator delete(void*, void*) {} + + inline void gc::operator delete(void* p, GCPlacement /* gcp */) + { + GC_FREE(p); + } +#endif // GC_PLACEMENT_DELETE + +#ifdef GC_OPERATOR_NEW_ARRAY + inline void* gc::operator new[](size_t size) + { + return gc::operator new(size); + } + + inline void* gc::operator new[](size_t size, GCPlacement gcp) + { + return gc::operator new(size, gcp); + } + + inline void* gc::operator new[](size_t /* size */, void* p) + { + return p; + } + + inline void gc::operator delete[](void* obj) + { + gc::operator delete(obj); + } + +# ifdef GC_PLACEMENT_DELETE + inline void gc::operator delete[](void*, void*) {} + + inline void gc::operator delete[](void* p, GCPlacement /* gcp */) + { + gc::operator delete(p); + } +# endif +#endif // GC_OPERATOR_NEW_ARRAY + +inline gc_cleanup::~gc_cleanup() +{ + void* base = GC_base(this); + if (0 == base) return; // Non-heap object. + GC_register_finalizer_ignore_self(base, 0, 0, 0, 0); +} + +inline void GC_CALLBACK gc_cleanup::cleanup(void* obj, void* displ) +{ + ((gc_cleanup*) ((char*) obj + (ptrdiff_t) displ))->~gc_cleanup(); +} + +inline gc_cleanup::gc_cleanup() +{ + GC_finalization_proc oldProc; + void* oldData; + void* this_ptr = (void*)this; + void* base = GC_base(this_ptr); + if (base != 0) { + // Don't call the debug version, since this is a real base address. + GC_register_finalizer_ignore_self(base, (GC_finalization_proc) cleanup, + (void*)((char*)this_ptr - (char*)base), + &oldProc, &oldData); + if (oldProc != 0) { + GC_register_finalizer_ignore_self(base, oldProc, oldData, 0, 0); + } + } +} + +#ifdef GC_NAMESPACE +} +#endif + +inline void* operator new(size_t size, GC_NS_QUALIFY(GCPlacement) gcp, + GC_NS_QUALIFY(GCCleanUpFunc) cleanup, + void* clientData) +{ + void* obj; + switch (gcp) { + case GC_NS_QUALIFY(UseGC): + obj = GC_MALLOC(size); + if (cleanup != 0) { + GC_REGISTER_FINALIZER_IGNORE_SELF(obj, cleanup, clientData, 0, 0); + } + return obj; + case GC_NS_QUALIFY(PointerFreeGC): + return GC_MALLOC_ATOMIC(size); +# ifdef GC_ATOMIC_UNCOLLECTABLE + case GC_NS_QUALIFY(PointerFreeNoGC): + return GC_MALLOC_ATOMIC_UNCOLLECTABLE(size); +# endif + case GC_NS_QUALIFY(NoGC): + default: + return GC_MALLOC_UNCOLLECTABLE(size); + } +} + +#ifdef GC_PLACEMENT_DELETE + inline void operator delete(void* p, GC_NS_QUALIFY(GCPlacement) /* gcp */, + GC_NS_QUALIFY(GCCleanUpFunc) /* cleanup */, + void* /* clientData */) + { + GC_FREE(p); + } +#endif // GC_PLACEMENT_DELETE + +#ifdef GC_OPERATOR_NEW_ARRAY + inline void* operator new[](size_t size, GC_NS_QUALIFY(GCPlacement) gcp, + GC_NS_QUALIFY(GCCleanUpFunc) cleanup, + void* clientData) + { + return ::operator new(size, gcp, cleanup, clientData); + } +#endif // GC_OPERATOR_NEW_ARRAY + +#endif /* GC_CPP_H */ diff --git a/include/gc_disclaim.h b/include/gc_disclaim.h new file mode 100644 index 0000000..716b741 --- /dev/null +++ b/include/gc_disclaim.h @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2007-2011 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +#ifndef GC_DISCLAIM_H +#define GC_DISCLAIM_H + +#include "gc.h" + +/* This API is defined only if the library has been suitably compiled */ +/* (i.e. with ENABLE_DISCLAIM defined). */ + +/* Prepare the object kind used by GC_finalized_malloc. Call it from */ +/* your initialization code or, at least, at some point before using */ +/* finalized allocations. The function is thread-safe. */ +GC_API void GC_CALL GC_init_finalized_malloc(void); + +/* Type of a disclaim call-back. */ +typedef int (GC_CALLBACK * GC_disclaim_proc)(void * /*obj*/); + +/* Register "proc" to be called on each object of "kind" ready to be */ +/* reclaimed. If "proc" returns non-zero, the collector will not */ +/* reclaim the object on this GC cycle. Objects reachable from "proc" */ +/* will be protected from collection if "mark_from_all" is non-zero, */ +/* but at the expense that long chains of objects will take many cycles */ +/* to reclaim. */ +GC_API void GC_CALL GC_register_disclaim_proc(int /*kind*/, + GC_disclaim_proc /*proc*/, + int /*mark_from_all*/); + +/* The finalizer closure used by GC_finalized_malloc. */ +struct GC_finalizer_closure { + GC_finalization_proc proc; + void *cd; +}; + +/* Allocate "size" bytes which is finalized by "fc". This uses a */ +/* dedicated object kind with a disclaim procedure, and is more */ +/* efficient than GC_register_finalizer and friends. */ +/* GC_init_finalized_malloc must be called before using this. */ +/* Note that GC_size (applied to such allocated object) returns a value */ +/* slightly bigger than the specified allocation size, and that GC_base */ +/* result points to a word prior to the start of the allocated object. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_finalized_malloc(size_t /*size*/, + const struct GC_finalizer_closure * /*fc*/); + +#endif diff --git a/include/gc_gcj.h b/include/gc_gcj.h new file mode 100644 index 0000000..eba714c --- /dev/null +++ b/include/gc_gcj.h @@ -0,0 +1,110 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. + * Copyright 1996-1999 by Silicon Graphics. All rights reserved. + * Copyright 1999 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* This file assumes the collector has been compiled with GC_GCJ_SUPPORT. */ + +/* + * We allocate objects whose first word contains a pointer to a struct + * describing the object type. This struct contains a garbage collector mark + * descriptor at offset MARK_DESCR_OFFSET. Alternatively, the objects + * may be marked by the mark procedure passed to GC_init_gcj_malloc. + */ + +#ifndef GC_GCJ_H +#define GC_GCJ_H + + /* Gcj keeps GC descriptor as second word of vtable. This */ + /* probably needs to be adjusted for other clients. */ + /* We currently assume that this offset is such that: */ + /* - all objects of this kind are large enough to have */ + /* a value at that offset, and */ + /* - it is not zero. */ + /* These assumptions allow objects on the free list to be */ + /* marked normally. */ + +#ifndef GC_H +# include "gc.h" +#endif + +#ifdef __cplusplus + extern "C" { +#endif + +/* The following allocators signal an out of memory condition with */ +/* return GC_oom_fn(bytes); */ + +/* The following function must be called before the gcj allocators */ +/* can be invoked. */ +/* mp_index and mp are the index and mark_proc (see gc_mark.h) */ +/* respectively for the allocated objects. Mark_proc will be */ +/* used to build the descriptor for objects allocated through the */ +/* debugging interface. The mark_proc will be invoked on all such */ +/* objects with an "environment" value of 1. The client may choose */ +/* to use the same mark_proc for some of its generated mark descriptors.*/ +/* In that case, it should use a different "environment" value to */ +/* detect the presence or absence of the debug header. */ +/* Mp is really of type mark_proc, as defined in gc_mark.h. We don't */ +/* want to include that here for namespace pollution reasons. */ +/* Passing in mp_index here instead of having GC_init_gcj_malloc() */ +/* internally call GC_new_proc() is quite ugly, but in typical usage */ +/* scenarios a compiler also has to know about mp_index, so */ +/* generating it dynamically is not acceptable. Mp_index will */ +/* typically be an integer < RESERVED_MARK_PROCS, so that it doesn't */ +/* collide with GC_new_proc allocated indices. If the application */ +/* needs no other reserved indices, zero */ +/* (GC_GCJ_RESERVED_MARK_PROC_INDEX in gc_mark.h) is an obvious choice. */ +GC_API void GC_CALL GC_init_gcj_malloc(int /* mp_index */, + void * /* really mark_proc */ /* mp */); + +/* Allocate an object, clear it, and store the pointer to the */ +/* type structure (vtable in gcj). */ +/* This adds a byte at the end of the object if GC_malloc would.*/ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_gcj_malloc(size_t /* lb */, + void * /* ptr_to_struct_containing_descr */); + +/* The debug versions allocate such that the specified mark_proc */ +/* is always invoked. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_debug_gcj_malloc(size_t /* lb */, + void * /* ptr_to_struct_containing_descr */, + GC_EXTRA_PARAMS); + +/* Similar to GC_gcj_malloc, but assumes that a pointer to near the */ +/* beginning of the resulting object is always maintained. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_gcj_malloc_ignore_off_page(size_t /* lb */, + void * /* ptr_to_struct_containing_descr */); + +/* The kind numbers of normal and debug gcj objects. */ +/* Useful only for debug support, we hope. */ +GC_API int GC_gcj_kind; + +GC_API int GC_gcj_debug_kind; + +#ifdef GC_DEBUG +# define GC_GCJ_MALLOC(s,d) GC_debug_gcj_malloc(s,d,GC_EXTRAS) +# define GC_GCJ_MALLOC_IGNORE_OFF_PAGE(s,d) GC_debug_gcj_malloc(s,d,GC_EXTRAS) +#else +# define GC_GCJ_MALLOC(s,d) GC_gcj_malloc(s,d) +# define GC_GCJ_MALLOC_IGNORE_OFF_PAGE(s,d) GC_gcj_malloc_ignore_off_page(s,d) +#endif + +#ifdef __cplusplus + } /* end of extern "C" */ +#endif + +#endif /* GC_GCJ_H */ diff --git a/include/gc_inline.h b/include/gc_inline.h new file mode 100644 index 0000000..8f7c967 --- /dev/null +++ b/include/gc_inline.h @@ -0,0 +1,176 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. + * Copyright (c) 2005 Hewlett-Packard Development Company, L.P. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_INLINE_H +#define GC_INLINE_H + +/* WARNING: */ +/* Note that for these routines, it is the clients responsibility to */ +/* add the extra byte at the end to deal with one-past-the-end pointers.*/ +/* In the standard collector configuration, the collector assumes that */ +/* such a byte has been added, and hence does not trace the last word */ +/* in the resulting object. */ +/* This is not an issue if the collector is compiled with */ +/* DONT_ADD_BYTE_AT_END, or if GC_all_interior_pointers is not set. */ +/* This interface is most useful for compilers that generate C. */ +/* It is also used internally for thread-local allocation. */ +/* Manual use is hereby discouraged. */ + +#include "gc.h" +#include "gc_tiny_fl.h" + +#if __GNUC__ >= 3 +# define GC_EXPECT(expr, outcome) __builtin_expect(expr,outcome) + /* Equivalent to (expr), but predict that usually (expr)==outcome. */ +#else +# define GC_EXPECT(expr, outcome) (expr) +#endif /* __GNUC__ */ + +#ifndef GC_ASSERT +# define GC_ASSERT(expr) /* empty */ +#endif + +#ifndef GC_PREFETCH_FOR_WRITE +# define GC_PREFETCH_FOR_WRITE(x) (void)0 +#endif + +/* Object kinds; must match PTRFREE, NORMAL in gc_priv.h. */ +#define GC_I_PTRFREE 0 +#define GC_I_NORMAL 1 + +/* Store a pointer to a list of newly allocated objects of kind k and */ +/* size lb in *result. The caller must make sure that *result is */ +/* traced even if objects are ptrfree. */ +GC_API void GC_CALL GC_generic_malloc_many(size_t /* lb */, int /* k */, + void ** /* result */); + +/* Generalized version of GC_malloc and GC_malloc_atomic. */ +/* Uses appropriately the thread-local (if available) or the global */ +/* free-list of the specified kind. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc_kind(size_t /* lb */, int /* k */); + +#ifdef GC_THREADS + /* Same as above but uses only the global free-list. */ + GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc_kind_global(size_t /* lb */, int /* k */); +#else +# define GC_malloc_kind_global GC_malloc_kind +#endif + +/* The ultimately general inline allocation macro. Allocate an object */ +/* of size granules, putting the resulting pointer in result. Tiny_fl */ +/* is a "tiny" free list array, which will be used first, if the size */ +/* is appropriate. If granules is too large, we allocate with */ +/* default_expr instead. If we need to refill the free list, we use */ +/* GC_generic_malloc_many with the indicated kind. */ +/* Tiny_fl should be an array of GC_TINY_FREELISTS void * pointers. */ +/* If num_direct is nonzero, and the individual free list pointers */ +/* are initialized to (void *)1, then we allocate num_direct granules */ +/* directly using generic_malloc before putting multiple objects into */ +/* the tiny_fl entry. If num_direct is zero, then the free lists may */ +/* also be initialized to (void *)0. */ +/* Note that we use the zeroth free list to hold objects 1 granule in */ +/* size that are used to satisfy size 0 allocation requests. */ +/* We rely on much of this hopefully getting optimized away in the */ +/* num_direct = 0 case. */ +/* Particularly if granules is constant, this should generate a small */ +/* amount of code. */ +# define GC_FAST_MALLOC_GRANS(result,granules,tiny_fl,num_direct, \ + kind,default_expr,init) \ + do { \ + if (GC_EXPECT((granules) >= GC_TINY_FREELISTS,0)) { \ + result = (default_expr); \ + } else { \ + void **my_fl = (tiny_fl) + (granules); \ + void *my_entry=*my_fl; \ + void *next; \ + \ + for (;;) { \ + if (GC_EXPECT((GC_word)my_entry \ + > (num_direct) + GC_TINY_FREELISTS + 1, 1)) { \ + next = *(void **)(my_entry); \ + result = (void *)my_entry; \ + *my_fl = next; \ + init; \ + GC_PREFETCH_FOR_WRITE(next); \ + GC_ASSERT(GC_size(result) >= (granules)*GC_GRANULE_BYTES); \ + GC_ASSERT((kind) == GC_I_PTRFREE \ + || ((GC_word *)result)[1] == 0); \ + break; \ + } \ + /* Entry contains counter or NULL */ \ + if ((GC_signed_word)my_entry - (GC_signed_word)(num_direct) <= 0 \ + /* (GC_word)my_entry <= (num_direct) */ \ + && my_entry != NULL) { \ + /* Small counter value, not NULL */ \ + *my_fl = (char *)my_entry + (granules) + 1; \ + result = (default_expr); \ + break; \ + } else { \ + /* Large counter or NULL */ \ + GC_generic_malloc_many(((granules) == 0? GC_GRANULE_BYTES : \ + GC_RAW_BYTES_FROM_INDEX(granules)), \ + kind, my_fl); \ + my_entry = *my_fl; \ + if (my_entry == 0) { \ + result = (*GC_get_oom_fn())((granules)*GC_GRANULE_BYTES); \ + break; \ + } \ + } \ + } \ + } \ + } while (0) + +# define GC_WORDS_TO_WHOLE_GRANULES(n) \ + GC_WORDS_TO_GRANULES((n) + GC_GRANULE_WORDS - 1) + +/* Allocate n words (NOT BYTES). X is made to point to the result. */ +/* This should really only be used if GC_all_interior_pointers is */ +/* not set, or DONT_ADD_BYTE_AT_END is set. See above. */ +/* The semantics changed in version 7.0; we no longer lock, and */ +/* the caller is responsible for supplying a cleared tiny_fl */ +/* free list array. For single-threaded applications, this may be */ +/* a global array. */ +# define GC_MALLOC_WORDS_KIND(result,n,tiny_fl,k,init) \ + do { \ + size_t grans = GC_WORDS_TO_WHOLE_GRANULES(n); \ + GC_FAST_MALLOC_GRANS(result, grans, tiny_fl, 0, k, \ + GC_malloc_kind(grans * GC_GRANULE_BYTES, k), \ + init); \ + } while (0) + +# define GC_MALLOC_WORDS(result,n,tiny_fl) \ + GC_MALLOC_WORDS_KIND(result, n, tiny_fl, GC_I_NORMAL, \ + *(void **)(result) = 0) + +# define GC_MALLOC_ATOMIC_WORDS(result,n,tiny_fl) \ + GC_MALLOC_WORDS_KIND(result, n, tiny_fl, GC_I_PTRFREE, (void)0) + +/* And once more for two word initialized objects: */ +# define GC_CONS(result, first, second, tiny_fl) \ + do { \ + size_t grans = GC_WORDS_TO_WHOLE_GRANULES(2); \ + GC_FAST_MALLOC_GRANS(result, grans, tiny_fl, 0, GC_I_NORMAL, \ + GC_malloc_kind(grans * GC_GRANULE_BYTES, \ + GC_I_NORMAL), \ + *(void **)(result) = (void *)(first)); \ + ((void **)(result))[1] = (void *)(second); \ + } while (0) + +GC_API void GC_CALL GC_print_free_list(int /* kind */, + size_t /* sz_in_granules */); + +#endif /* !GC_INLINE_H */ diff --git a/include/gc_mark.h b/include/gc_mark.h new file mode 100644 index 0000000..c30da2c --- /dev/null +++ b/include/gc_mark.h @@ -0,0 +1,317 @@ +/* + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 2001 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +/* + * This contains interfaces to the GC marker that are likely to be useful to + * clients that provide detailed heap layout information to the collector. + * This interface should not be used by normal C or C++ clients. + * It will be useful to runtimes for other languages. + * + * This is an experts-only interface! There are many ways to break the + * collector in subtle ways by using this functionality. + */ +#ifndef GC_MARK_H +#define GC_MARK_H + +#ifndef GC_H +# include "gc.h" +#endif + +#ifdef __cplusplus + extern "C" { +#endif + +/* A client supplied mark procedure. Returns new mark stack pointer. */ +/* Primary effect should be to push new entries on the mark stack. */ +/* Mark stack pointer values are passed and returned explicitly. */ +/* Global variables describing mark stack are not necessarily valid. */ +/* (This usually saves a few cycles by keeping things in registers.) */ +/* Assumed to scan about GC_PROC_BYTES on average. If it needs to do */ +/* much more work than that, it should do it in smaller pieces by */ +/* pushing itself back on the mark stack. */ +/* Note that it should always do some work (defined as marking some */ +/* objects) before pushing more than one entry on the mark stack. */ +/* This is required to ensure termination in the event of mark stack */ +/* overflows. */ +/* This procedure is always called with at least one empty entry on the */ +/* mark stack. */ +/* Currently we require that mark procedures look for pointers in a */ +/* subset of the places the conservative marker would. It must be safe */ +/* to invoke the normal mark procedure instead. */ +/* WARNING: Such a mark procedure may be invoked on an unused object */ +/* residing on a free list. Such objects are cleared, except for a */ +/* free list link field in the first word. Thus mark procedures may */ +/* not count on the presence of a type descriptor, and must handle this */ +/* case correctly somehow. */ +#define GC_PROC_BYTES 100 + +#ifdef GC_BUILD + struct GC_ms_entry; +#else + struct GC_ms_entry { void *opaque; }; +#endif +typedef struct GC_ms_entry * (*GC_mark_proc)(GC_word * /* addr */, + struct GC_ms_entry * /* mark_stack_ptr */, + struct GC_ms_entry * /* mark_stack_limit */, + GC_word /* env */); + +#define GC_LOG_MAX_MARK_PROCS 6 +#define GC_MAX_MARK_PROCS (1 << GC_LOG_MAX_MARK_PROCS) + +/* In a few cases it's necessary to assign statically known indices to */ +/* certain mark procs. Thus we reserve a few for well known clients. */ +/* (This is necessary if mark descriptors are compiler generated.) */ +#define GC_RESERVED_MARK_PROCS 8 +#define GC_GCJ_RESERVED_MARK_PROC_INDEX 0 + +/* Object descriptors on mark stack or in objects. Low order two */ +/* bits are tags distinguishing among the following 4 possibilities */ +/* for the high order 30 bits. */ +#define GC_DS_TAG_BITS 2 +#define GC_DS_TAGS ((1 << GC_DS_TAG_BITS) - 1) +#define GC_DS_LENGTH 0 /* The entire word is a length in bytes that */ + /* must be a multiple of 4. */ +#define GC_DS_BITMAP 1 /* 30 (62) bits are a bitmap describing pointer */ + /* fields. The msb is 1 if the first word */ + /* is a pointer. */ + /* (This unconventional ordering sometimes */ + /* makes the marker slightly faster.) */ + /* Zeroes indicate definite nonpointers. Ones */ + /* indicate possible pointers. */ + /* Only usable if pointers are word aligned. */ +#define GC_DS_PROC 2 + /* The objects referenced by this object can be */ + /* pushed on the mark stack by invoking */ + /* PROC(descr). ENV(descr) is passed as the */ + /* last argument. */ +#define GC_MAKE_PROC(proc_index, env) \ + (((((env) << GC_LOG_MAX_MARK_PROCS) \ + | (proc_index)) << GC_DS_TAG_BITS) | GC_DS_PROC) +#define GC_DS_PER_OBJECT 3 /* The real descriptor is at the */ + /* byte displacement from the beginning of the */ + /* object given by descr & ~GC_DS_TAGS. */ + /* If the descriptor is negative, the real */ + /* descriptor is at (*) - */ + /* (descr&~GC_DS_TAGS) - GC_INDIR_PER_OBJ_BIAS */ + /* The latter alternative can be used if each */ + /* object contains a type descriptor in the */ + /* first word. */ + /* Note that in the multi-threaded environments */ + /* per-object descriptors must be located in */ + /* either the first two or last two words of */ + /* the object, since only those are guaranteed */ + /* to be cleared while the allocation lock is */ + /* held. */ +#define GC_INDIR_PER_OBJ_BIAS 0x10 + +GC_API void * GC_least_plausible_heap_addr; +GC_API void * GC_greatest_plausible_heap_addr; + /* Bounds on the heap. Guaranteed valid */ + /* Likely to include future heap expansion. */ + /* Hence usually includes not-yet-mapped */ + /* memory. */ + +/* Handle nested references in a custom mark procedure. */ +/* Check if obj is a valid object. If so, ensure that it is marked. */ +/* If it was not previously marked, push its contents onto the mark */ +/* stack for future scanning. The object will then be scanned using */ +/* its mark descriptor. */ +/* Returns the new mark stack pointer. */ +/* Handles mark stack overflows correctly. */ +/* Since this marks first, it makes progress even if there are mark */ +/* stack overflows. */ +/* Src is the address of the pointer to obj, which is used only */ +/* for back pointer-based heap debugging. */ +/* It is strongly recommended that most objects be handled without mark */ +/* procedures, e.g. with bitmap descriptors, and that mark procedures */ +/* be reserved for exceptional cases. That will ensure that */ +/* performance of this call is not extremely performance critical. */ +/* (Otherwise we would need to inline GC_mark_and_push completely, */ +/* which would tie the client code to a fixed collector version.) */ +/* Note that mark procedures should explicitly call FIXUP_POINTER() */ +/* if required. */ +GC_API struct GC_ms_entry * GC_CALL GC_mark_and_push(void * /* obj */, + struct GC_ms_entry * /* mark_stack_ptr */, + struct GC_ms_entry * /* mark_stack_limit */, + void ** /* src */); + +#define GC_MARK_AND_PUSH(obj, msp, lim, src) \ + ((GC_word)(obj) >= (GC_word)GC_least_plausible_heap_addr && \ + (GC_word)(obj) <= (GC_word)GC_greatest_plausible_heap_addr ? \ + GC_mark_and_push(obj, msp, lim, src) : (msp)) + +GC_API size_t GC_debug_header_size; + /* The size of the header added to objects allocated through */ + /* the GC_debug routines. */ + /* Defined as a variable so that client mark procedures don't */ + /* need to be recompiled for collector version changes. */ +#define GC_USR_PTR_FROM_BASE(p) ((void *)((char *)(p) + GC_debug_header_size)) + +/* And some routines to support creation of new "kinds", e.g. with */ +/* custom mark procedures, by language runtimes. */ +/* The _inner versions assume the caller holds the allocation lock. */ + +/* Return a new free list array. */ +GC_API void ** GC_CALL GC_new_free_list(void); +GC_API void ** GC_CALL GC_new_free_list_inner(void); + +/* Return a new kind, as specified. */ +GC_API unsigned GC_CALL GC_new_kind(void ** /* free_list */, + GC_word /* mark_descriptor_template */, + int /* add_size_to_descriptor */, + int /* clear_new_objects */) GC_ATTR_NONNULL(1); + /* The last two parameters must be zero or one. */ +GC_API unsigned GC_CALL GC_new_kind_inner(void ** /* free_list */, + GC_word /* mark_descriptor_template */, + int /* add_size_to_descriptor */, + int /* clear_new_objects */) GC_ATTR_NONNULL(1); + +/* Return a new mark procedure identifier, suitable for use as */ +/* the first argument in GC_MAKE_PROC. */ +GC_API unsigned GC_CALL GC_new_proc(GC_mark_proc); +GC_API unsigned GC_CALL GC_new_proc_inner(GC_mark_proc); + +/* Allocate an object of a given kind. By default, there are only */ +/* a few kinds: composite (pointer-free), atomic, uncollectible, etc. */ +/* We claim it is possible for clever client code that understands the */ +/* GC internals to add more, e.g. to communicate object layout */ +/* information to the collector. Note that in the multi-threaded */ +/* contexts, this is usually unsafe for kinds that have the descriptor */ +/* in the object itself, since there is otherwise a window in which */ +/* the descriptor is not correct. Even in the single-threaded case, */ +/* we need to be sure that cleared objects on a free list don't */ +/* cause a GC crash if they are accidentally traced. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL GC_generic_malloc( + size_t /* lb */, + int /* knd */); + +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_generic_malloc_ignore_off_page( + size_t /* lb */, int /* knd */); + /* As above, but pointers to past the */ + /* first page of the resulting object */ + /* are ignored. */ + +/* Generalized version of GC_malloc_[atomic_]uncollectable. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_generic_malloc_uncollectable( + size_t /* lb */, int /* knd */); + +/* Same as above but primary for allocating an object of the same kind */ +/* as an existing one (kind obtained by GC_get_kind_and_size). */ +/* Not suitable for GCJ and typed-malloc kinds. */ +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_generic_or_special_malloc( + size_t /* size */, int /* knd */); +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_debug_generic_or_special_malloc( + size_t /* size */, int /* knd */, + GC_EXTRA_PARAMS); + +#ifdef GC_DEBUG +# define GC_GENERIC_OR_SPECIAL_MALLOC(sz, knd) \ + GC_debug_generic_or_special_malloc(sz, knd, GC_EXTRAS) +#else +# define GC_GENERIC_OR_SPECIAL_MALLOC(sz, knd) \ + GC_generic_or_special_malloc(sz, knd) +#endif /* !GC_DEBUG */ + +/* Similar to GC_size but returns object kind. Size is returned too */ +/* if psize is not NULL. */ +GC_API int GC_CALL GC_get_kind_and_size(const void *, size_t * /* psize */) + GC_ATTR_NONNULL(1); + +typedef void (GC_CALLBACK * GC_describe_type_fn)(void * /* p */, + char * /* out_buf */); + /* A procedure which */ + /* produces a human-readable */ + /* description of the "type" of object */ + /* p into the buffer out_buf of length */ + /* GC_TYPE_DESCR_LEN. This is used by */ + /* the debug support when printing */ + /* objects. */ + /* These functions should be as robust */ + /* as possible, though we do avoid */ + /* invoking them on objects on the */ + /* global free list. */ +#define GC_TYPE_DESCR_LEN 40 + +GC_API void GC_CALL GC_register_describe_type_fn(int /* kind */, + GC_describe_type_fn); + /* Register a describe_type function */ + /* to be used when printing objects */ + /* of a particular kind. */ + +/* Clear some of the inaccessible part of the stack. Returns its */ +/* argument, so it can be used in a tail call position, hence clearing */ +/* another frame. Argument may be NULL. */ +GC_API void * GC_CALL GC_clear_stack(void *); + +/* Set and get the client notifier on collections. The client function */ +/* is called at the start of every full GC (called with the allocation */ +/* lock held). May be 0. This is a really tricky interface to use */ +/* correctly. Unless you really understand the collector internals, */ +/* the callback should not, directly or indirectly, make any GC_ or */ +/* potentially blocking calls. In particular, it is not safe to */ +/* allocate memory using the garbage collector from within the callback */ +/* function. Both the setter and getter acquire the GC lock. */ +typedef void (GC_CALLBACK * GC_start_callback_proc)(void); +GC_API void GC_CALL GC_set_start_callback(GC_start_callback_proc); +GC_API GC_start_callback_proc GC_CALL GC_get_start_callback(void); + +/* Slow/general mark bit manipulation. The caller must hold the */ +/* allocation lock. GC_is_marked returns 1 (TRUE) or 0. */ +GC_API int GC_CALL GC_is_marked(const void *) GC_ATTR_NONNULL(1); +GC_API void GC_CALL GC_clear_mark_bit(const void *) GC_ATTR_NONNULL(1); +GC_API void GC_CALL GC_set_mark_bit(const void *) GC_ATTR_NONNULL(1); + +/* Push everything in the given range onto the mark stack. */ +/* (GC_push_conditional pushes either all or only dirty pages depending */ +/* on the third argument.) GC_push_all_eager also ensures that stack */ +/* is scanned immediately, not just scheduled for scanning. */ +GC_API void GC_CALL GC_push_all(char * /* bottom */, char * /* top */); +GC_API void GC_CALL GC_push_all_eager(char * /* bottom */, char * /* top */); +GC_API void GC_CALL GC_push_conditional(char * /* bottom */, char * /* top */, + int /* bool all */); +GC_API void GC_CALL GC_push_finalizer_structures(void); + +/* Set and get the client push-other-roots procedure. A client */ +/* supplied procedure should also call the original procedure. */ +/* Note that both the setter and getter require some external */ +/* synchronization to avoid data race. */ +typedef void (GC_CALLBACK * GC_push_other_roots_proc)(void); +GC_API void GC_CALL GC_set_push_other_roots(GC_push_other_roots_proc); +GC_API GC_push_other_roots_proc GC_CALL GC_get_push_other_roots(void); + +/* Walk the GC heap visiting all reachable objects. Assume the caller */ +/* holds the allocation lock. Object base pointer, object size and */ +/* client custom data are passed to the callback (holding the lock). */ +typedef void (GC_CALLBACK *GC_reachable_object_proc)(void * /* obj */, + size_t /* bytes */, + void * /* client_data */); +GC_API void GC_CALL GC_enumerate_reachable_objects_inner( + GC_reachable_object_proc, + void * /* client_data */) GC_ATTR_NONNULL(1); + +GC_API int GC_CALL GC_is_tmp_root(void *); + +GC_API void GC_CALL GC_print_trace(GC_word /* gc_no */); +GC_API void GC_CALL GC_print_trace_inner(GC_word /* gc_no */); + +#ifdef __cplusplus + } /* end of extern "C" */ +#endif + +#endif /* GC_MARK_H */ diff --git a/include/gc_pthread_redirects.h b/include/gc_pthread_redirects.h new file mode 100644 index 0000000..8dcf7eb --- /dev/null +++ b/include/gc_pthread_redirects.h @@ -0,0 +1,105 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2010 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* Our pthread support normally needs to intercept a number of thread */ +/* calls. We arrange to do that here, if appropriate. */ + +/* Included from gc.h only. Included only if GC_PTHREADS. */ +#if defined(GC_H) && defined(GC_PTHREADS) + +/* We need to intercept calls to many of the threads primitives, so */ +/* that we can locate thread stacks and stop the world. */ +/* Note also that the collector cannot always see thread specific data. */ +/* Thread specific data should generally consist of pointers to */ +/* uncollectible objects (allocated with GC_malloc_uncollectable, */ +/* not the system malloc), which are deallocated using the destructor */ +/* facility in thr_keycreate. Alternatively, keep a redundant pointer */ +/* to thread specific data on the thread stack. */ + +#ifndef GC_PTHREAD_REDIRECTS_ONLY +# include + +# ifndef GC_SUSPEND_THREAD_ID +# define GC_SUSPEND_THREAD_ID pthread_t +# endif + +# ifndef GC_NO_DLOPEN +# include + GC_API void *GC_dlopen(const char * /* path */, int /* mode */); +# endif /* !GC_NO_DLOPEN */ + +# ifndef GC_NO_PTHREAD_SIGMASK +# include /* needed anyway for proper redirection */ +# if defined(GC_PTHREAD_SIGMASK_NEEDED) \ + || defined(_BSD_SOURCE) || defined(_GNU_SOURCE) \ + || (_POSIX_C_SOURCE >= 199506L) || (_XOPEN_SOURCE >= 500) + GC_API int GC_pthread_sigmask(int /* how */, const sigset_t *, + sigset_t * /* oset */); +# endif +# endif /* !GC_NO_PTHREAD_SIGMASK */ + +# ifndef GC_PTHREAD_CREATE_CONST + /* This is used for pthread_create() only. */ +# define GC_PTHREAD_CREATE_CONST const +# endif + + GC_API int GC_pthread_create(pthread_t *, + GC_PTHREAD_CREATE_CONST pthread_attr_t *, + void *(*)(void *), void * /* arg */); + GC_API int GC_pthread_join(pthread_t, void ** /* retval */); + GC_API int GC_pthread_detach(pthread_t); + +# ifndef GC_NO_PTHREAD_CANCEL + GC_API int GC_pthread_cancel(pthread_t); +# endif + +# if defined(GC_HAVE_PTHREAD_EXIT) && !defined(GC_PTHREAD_EXIT_DECLARED) +# define GC_PTHREAD_EXIT_DECLARED + GC_API void GC_pthread_exit(void *) GC_PTHREAD_EXIT_ATTRIBUTE; +# endif +#endif /* !GC_PTHREAD_REDIRECTS_ONLY */ + +#if !defined(GC_NO_THREAD_REDIRECTS) && !defined(GC_USE_LD_WRAP) + /* Unless the compiler supports #pragma extern_prefix, the Tru64 */ + /* UNIX redefines some POSIX thread functions to use */ + /* mangled names. Anyway, it's safe to undef them before redefining. */ +# undef pthread_create +# undef pthread_join +# undef pthread_detach +# define pthread_create GC_pthread_create +# define pthread_join GC_pthread_join +# define pthread_detach GC_pthread_detach + +# ifndef GC_NO_PTHREAD_SIGMASK +# undef pthread_sigmask +# define pthread_sigmask GC_pthread_sigmask +# endif +# ifndef GC_NO_DLOPEN +# undef dlopen +# define dlopen GC_dlopen +# endif +# ifndef GC_NO_PTHREAD_CANCEL +# undef pthread_cancel +# define pthread_cancel GC_pthread_cancel +# endif +# ifdef GC_HAVE_PTHREAD_EXIT +# undef pthread_exit +# define pthread_exit GC_pthread_exit +# endif +#endif /* !GC_NO_THREAD_REDIRECTS */ + +#endif /* GC_PTHREADS */ diff --git a/include/gc_tiny_fl.h b/include/gc_tiny_fl.h new file mode 100644 index 0000000..0382b41 --- /dev/null +++ b/include/gc_tiny_fl.h @@ -0,0 +1,90 @@ +/* + * Copyright (c) 1999-2005 Hewlett-Packard Development Company, L.P. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_TINY_FL_H +#define GC_TINY_FL_H +/* + * Constants and data structures for "tiny" free lists. + * These are used for thread-local allocation or in-lined allocators. + * Each global free list also essentially starts with one of these. + * However, global free lists are known to the GC. "Tiny" free lists + * are basically private to the client. Their contents are viewed as + * "in use" and marked accordingly by the core of the GC. + * + * Note that inlined code might know about the layout of these and the constants + * involved. Thus any change here may invalidate clients, and such changes should + * be avoided. Hence we keep this as simple as possible. + */ + +/* + * We always set GC_GRANULE_BYTES to twice the length of a pointer. + * This means that all allocation requests are rounded up to the next + * multiple of 16 on 64-bit architectures or 8 on 32-bit architectures. + * This appears to be a reasonable compromise between fragmentation overhead + * and space usage for mark bits (usually mark bytes). + * On many 64-bit architectures some memory references require 16-byte + * alignment, making this necessary anyway. + * For a few 32-bit architecture (e.g. x86), we may also need 16-byte alignment + * for certain memory references. But currently that does not seem to be the + * default for all conventional malloc implementations, so we ignore that + * problem. + * It would always be safe, and often useful, to be able to allocate very + * small objects with smaller alignment. But that would cost us mark bit + * space, so we no longer do so. + */ +#ifndef GC_GRANULE_BYTES + /* GC_GRANULE_BYTES should not be overridden in any instances of the GC */ + /* library that may be shared between applications, since it affects */ + /* the binary interface to the library. */ +# if defined(__LP64__) || defined (_LP64) || defined(_WIN64) \ + || defined(__s390x__) \ + || (defined(__x86_64__) && !defined(__ILP32__)) \ + || defined(__alpha__) || defined(__powerpc64__) \ + || defined(__arch64__) +# define GC_GRANULE_BYTES 16 +# define GC_GRANULE_WORDS 2 +# else +# define GC_GRANULE_BYTES 8 +# define GC_GRANULE_WORDS 2 +# endif +#endif /* !GC_GRANULE_BYTES */ + +#if GC_GRANULE_WORDS == 2 +# define GC_WORDS_TO_GRANULES(n) ((n)>>1) +#else +# define GC_WORDS_TO_GRANULES(n) ((n)*sizeof(void *)/GC_GRANULE_BYTES) +#endif + +/* A "tiny" free list header contains TINY_FREELISTS pointers to */ +/* singly linked lists of objects of different sizes, the ith one */ +/* containing objects i granules in size. Note that there is a list */ +/* of size zero objects. */ +#ifndef GC_TINY_FREELISTS +# if GC_GRANULE_BYTES == 16 +# define GC_TINY_FREELISTS 25 +# else +# define GC_TINY_FREELISTS 33 /* Up to and including 256 bytes */ +# endif +#endif /* !GC_TINY_FREELISTS */ + +/* The ith free list corresponds to size i*GC_GRANULE_BYTES */ +/* Internally to the collector, the index can be computed with */ +/* ROUNDED_UP_GRANULES. Externally, we don't know whether */ +/* DONT_ADD_BYTE_AT_END is set, but the client should know. */ + +/* Convert a free list index to the actual size of objects */ +/* on that list, including extra space we added. Not an */ +/* inverse of the above. */ +#define GC_RAW_BYTES_FROM_INDEX(i) ((i) * GC_GRANULE_BYTES) + +#endif /* GC_TINY_FL_H */ diff --git a/include/gc_typed.h b/include/gc_typed.h new file mode 100644 index 0000000..06e8261 --- /dev/null +++ b/include/gc_typed.h @@ -0,0 +1,121 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright 1996 Silicon Graphics. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* + * Some simple primitives for allocation with explicit type information. + * Facilities for dynamic type inference may be added later. + * Should be used only for extremely performance critical applications, + * or if conservative collector leakage is otherwise a problem (unlikely). + * Note that this is implemented completely separately from the rest + * of the collector, and is not linked in unless referenced. + * This does not currently support GC_DEBUG in any interesting way. + */ + +#ifndef GC_TYPED_H +#define GC_TYPED_H + +#ifndef GC_H +# include "gc.h" +#endif + +#ifdef __cplusplus + extern "C" { +#endif + +typedef GC_word * GC_bitmap; + /* The least significant bit of the first word is one if */ + /* the first word in the object may be a pointer. */ + +#define GC_WORDSZ (8 * sizeof(GC_word)) +#define GC_get_bit(bm, index) \ + (((bm)[(index) / GC_WORDSZ] >> ((index) % GC_WORDSZ)) & 1) +#define GC_set_bit(bm, index) \ + ((bm)[(index) / GC_WORDSZ] |= (GC_word)1 << ((index) % GC_WORDSZ)) +#define GC_WORD_OFFSET(t, f) (offsetof(t,f) / sizeof(GC_word)) +#define GC_WORD_LEN(t) (sizeof(t) / sizeof(GC_word)) +#define GC_BITMAP_SIZE(t) ((GC_WORD_LEN(t) + GC_WORDSZ - 1) / GC_WORDSZ) + +typedef GC_word GC_descr; + +GC_API GC_descr GC_CALL GC_make_descriptor(const GC_word * /* GC_bitmap bm */, + size_t /* len (number_of_bits_in_bitmap) */); + /* Return a type descriptor for the object whose layout */ + /* is described by the argument. */ + /* The least significant bit of the first word is one */ + /* if the first word in the object may be a pointer. */ + /* The second argument specifies the number of */ + /* meaningful bits in the bitmap. The actual object */ + /* may be larger (but not smaller). Any additional */ + /* words in the object are assumed not to contain */ + /* pointers. */ + /* Returns a conservative approximation in the */ + /* (unlikely) case of insufficient memory to build */ + /* the descriptor. Calls to GC_make_descriptor */ + /* may consume some amount of a finite resource. This */ + /* is intended to be called once per type, not once */ + /* per allocation. */ + +/* It is possible to generate a descriptor for a C type T with */ +/* word aligned pointer fields f1, f2, ... as follows: */ +/* */ +/* GC_descr T_descr; */ +/* GC_word T_bitmap[GC_BITMAP_SIZE(T)] = {0}; */ +/* GC_set_bit(T_bitmap, GC_WORD_OFFSET(T,f1)); */ +/* GC_set_bit(T_bitmap, GC_WORD_OFFSET(T,f2)); */ +/* ... */ +/* T_descr = GC_make_descriptor(T_bitmap, GC_WORD_LEN(T)); */ + +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc_explicitly_typed(size_t /* size_in_bytes */, + GC_descr /* d */); + /* Allocate an object whose layout is described by d. */ + /* The size may NOT be less than the number of */ + /* meaningful bits in the bitmap of d multiplied by */ + /* sizeof GC_word. The returned object is cleared. */ + /* The returned object may NOT be passed to GC_realloc. */ + +GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL + GC_malloc_explicitly_typed_ignore_off_page(size_t /* size_in_bytes */, + GC_descr /* d */); + +GC_API GC_ATTR_MALLOC void * GC_CALL + GC_calloc_explicitly_typed(size_t /* nelements */, + size_t /* element_size_in_bytes */, + GC_descr /* d */); + /* Allocate an array of nelements elements, each of the */ + /* given size, and with the given descriptor. */ + /* The element size must be a multiple of the byte */ + /* alignment required for pointers. E.g. on a 32-bit */ + /* machine with 16-bit aligned pointers, size_in_bytes */ + /* must be a multiple of 2. The element size may NOT */ + /* be less than the number of meaningful bits in the */ + /* bitmap of d multiplied by sizeof GC_word. */ + /* Returned object is cleared. */ + +#ifdef GC_DEBUG +# define GC_MALLOC_EXPLICITLY_TYPED(bytes, d) GC_MALLOC(bytes) +# define GC_CALLOC_EXPLICITLY_TYPED(n, bytes, d) GC_MALLOC((n) * (bytes)) +#else +# define GC_MALLOC_EXPLICITLY_TYPED(bytes, d) \ + GC_malloc_explicitly_typed(bytes, d) +# define GC_CALLOC_EXPLICITLY_TYPED(n, bytes, d) \ + GC_calloc_explicitly_typed(n, bytes, d) +#endif + +#ifdef __cplusplus + } /* matches extern "C" */ +#endif + +#endif /* GC_TYPED_H */ diff --git a/include/gc_version.h b/include/gc_version.h new file mode 100644 index 0000000..9e31cb8 --- /dev/null +++ b/include/gc_version.h @@ -0,0 +1,47 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2009 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* This should never be included directly; it is included only from gc.h. */ +#if defined(GC_H) + +/* The policy regarding version numbers: development code has odd */ +/* "minor" number (and "micro" part is 0); when development is finished */ +/* and a release is prepared, "minor" number is incremented (keeping */ +/* "micro" number still zero), whenever a defect is fixed a new release */ +/* is prepared incrementing "micro" part to odd value (the most stable */ +/* release has the biggest "micro" number). */ + +/* The version here should match that in configure/configure.ac */ +/* Eventually this one may become unnecessary. For now we need */ +/* it to keep the old-style build process working. */ +#define GC_TMP_VERSION_MAJOR 7 +#define GC_TMP_VERSION_MINOR 6 +#define GC_TMP_VERSION_MICRO 4 /* 7.6.4 */ + +#ifdef GC_VERSION_MAJOR +# if GC_TMP_VERSION_MAJOR != GC_VERSION_MAJOR \ + || GC_TMP_VERSION_MINOR != GC_VERSION_MINOR \ + || GC_TMP_VERSION_MICRO != GC_VERSION_MICRO +# error Inconsistent version info. Check README.md, include/gc_version.h and configure.ac. +# endif +#else +# define GC_VERSION_MAJOR GC_TMP_VERSION_MAJOR +# define GC_VERSION_MINOR GC_TMP_VERSION_MINOR +# define GC_VERSION_MICRO GC_TMP_VERSION_MICRO +#endif /* !GC_VERSION_MAJOR */ + +#endif diff --git a/include/include.am b/include/include.am new file mode 100644 index 0000000..0d95734 --- /dev/null +++ b/include/include.am @@ -0,0 +1,55 @@ +# +# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +# OR IMPLIED. ANY USE IS AT YOUR OWN RISK. +# +# Permission is hereby granted to use or copy this program +# for any purpose, provided the above notices are retained on all copies. +# Permission to modify the code and to distribute modified code is granted, +# provided the above notices are retained, and a notice that the code was +# modified is included with the above copyright notice. + +## Process this file with automake to produce part of Makefile.in. + +# installed headers +# +pkginclude_HEADERS += \ + include/gc.h \ + include/gc_allocator.h \ + include/gc_backptr.h \ + include/gc_config_macros.h \ + include/gc_disclaim.h \ + include/gc_gcj.h \ + include/gc_inline.h \ + include/gc_mark.h \ + include/gc_pthread_redirects.h \ + include/gc_tiny_fl.h \ + include/gc_typed.h \ + include/gc_version.h \ + include/javaxfc.h \ + include/leak_detector.h \ + include/weakpointer.h + +# headers which are not installed +# +dist_noinst_HEADERS += \ + include/cord.h \ + include/cord_pos.h \ + include/ec.h \ + include/new_gc_alloc.h \ + include/private/darwin_semaphore.h \ + include/private/darwin_stop_world.h \ + include/private/dbg_mlc.h \ + include/private/gc_hdrs.h \ + include/private/gc_locks.h \ + include/private/gc_pmark.h \ + include/private/gc_priv.h \ + include/private/gcconfig.h \ + include/private/msvc_dbg.h \ + include/private/pthread_stop_world.h \ + include/private/pthread_support.h \ + include/private/specific.h \ + include/private/thread_local_alloc.h + +# unprefixed header +include_HEADERS += \ + include/extra/gc.h diff --git a/include/javaxfc.h b/include/javaxfc.h new file mode 100644 index 0000000..2a77ea6 --- /dev/null +++ b/include/javaxfc.h @@ -0,0 +1,60 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2009 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_H +# include "gc.h" +#endif + +#ifdef __cplusplus + extern "C" { +#endif + +/* + * Invoke all remaining finalizers that haven't yet been run. (Since the + * notifier is not called, this should be called from a separate thread.) + * This function is needed for strict compliance with the Java standard, + * which can make the runtime guarantee that all finalizers are run. + * This is problematic for several reasons: + * 1) It means that finalizers, and all methods called by them, + * must be prepared to deal with objects that have been finalized in + * spite of the fact that they are still referenced by statically + * allocated pointer variables. + * 2) It may mean that we get stuck in an infinite loop running + * finalizers which create new finalizable objects, though that's + * probably unlikely. + * Thus this is not recommended for general use. + */ +GC_API void GC_CALL GC_finalize_all(void); + +#ifdef GC_THREADS + /* External thread suspension support. No thread suspension count */ + /* (so a thread which has been suspended numerous times will be */ + /* resumed with the very first call to GC_resume_thread). */ + /* Acquire the allocation lock. Thread should be registered in GC */ + /* (otherwise no-op, GC_is_thread_suspended returns false). */ + /* Unimplemented on some platforms. Not recommended for general use. */ +# ifndef GC_SUSPEND_THREAD_ID +# define GC_SUSPEND_THREAD_ID void* +# endif + GC_API void GC_CALL GC_suspend_thread(GC_SUSPEND_THREAD_ID); + GC_API void GC_CALL GC_resume_thread(GC_SUSPEND_THREAD_ID); + GC_API int GC_CALL GC_is_thread_suspended(GC_SUSPEND_THREAD_ID); +#endif /* GC_THREADS */ + +#ifdef __cplusplus + } /* end of extern "C" */ +#endif diff --git a/include/leak_detector.h b/include/leak_detector.h new file mode 100644 index 0000000..0c27eda --- /dev/null +++ b/include/leak_detector.h @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2000-2011 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_LEAK_DETECTOR_H +#define GC_LEAK_DETECTOR_H + +/* Include leak_detector.h (e.g., via GCC --include directive) */ +/* to turn BoehmGC into a Leak Detector. */ + +#ifndef GC_DEBUG +# define GC_DEBUG +#endif +#include "gc.h" + +#ifndef GC_DONT_INCLUDE_STDLIB + /* We ensure stdlib.h and string.h are included before */ + /* redirecting malloc() and the accompanying functions. */ +# include +# include +#endif + +#undef malloc +#define malloc(n) GC_MALLOC(n) +#undef calloc +#define calloc(m,n) GC_MALLOC((m)*(n)) +#undef free +#define free(p) GC_FREE(p) +#undef realloc +#define realloc(p,n) GC_REALLOC(p,n) + +#undef strdup +#define strdup(s) GC_STRDUP(s) +#undef strndup +#define strndup(s,n) GC_STRNDUP(s,n) + +#ifdef GC_REQUIRE_WCSDUP + /* The collector should be built with GC_REQUIRE_WCSDUP */ + /* defined as well to redirect wcsdup(). */ +# include +# undef wcsdup +# define wcsdup(s) GC_WCSDUP(s) +#endif + +#undef memalign +#define memalign(a,n) GC_memalign(a,n) +#undef posix_memalign +#define posix_memalign(p,a,n) GC_posix_memalign(p,a,n) + +#ifndef CHECK_LEAKS +# define CHECK_LEAKS() GC_gcollect() + /* Note 1: CHECK_LEAKS does not have GC prefix (preserved for */ + /* backward compatibility). */ + /* Note 2: GC_gcollect() is also called automatically in the */ + /* leak-finding mode at program exit. */ +#endif + +#endif /* GC_LEAK_DETECTOR_H */ diff --git a/include/new_gc_alloc.h b/include/new_gc_alloc.h new file mode 100644 index 0000000..fc79b5b --- /dev/null +++ b/include/new_gc_alloc.h @@ -0,0 +1,484 @@ +/* + * Copyright (c) 1996-1998 by Silicon Graphics. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +// +// This is a revision of gc_allocator.h for SGI STL versions > 3.0. +// Unlike earlier versions, it supplements the standard (STL) alloc.h +// instead of replacing it. +// +// This is sloppy about variable names used in header files. +// It also doesn't yet understand the new header file names or +// namespaces. +// +// This assumes the collector has been compiled with -DGC_ATOMIC_UNCOLLECTABLE. +// The user should also consider -DREDIRECT_MALLOC=GC_uncollectable_malloc, +// to ensure that object allocated through malloc are traced. +// +// Some of this could be faster in the explicit deallocation case. +// In particular, we spend too much time clearing objects on the +// free lists. That could be avoided. +// +// This uses template classes with static members, and hence does not work +// with g++ 2.7.2 and earlier. +// +// Unlike its predecessor, this one simply defines +// gc_alloc +// single_client_gc_alloc +// traceable_alloc +// single_client_traceable_alloc +// +// It does not redefine alloc. Nor does it change the default allocator, +// though the user may wish to do so. (The argument against changing +// the default allocator is that it may introduce subtle link compatibility +// problems. The argument for changing it is that the usual default +// allocator is usually a very bad choice for a garbage collected environment.) +// + +#ifndef GC_ALLOC_H + +#include "gc.h" + +#if (__GNUC__ < 3) +# include // A more portable way to get stl_alloc.h . +#else +# include +# ifndef __STL_BEGIN_NAMESPACE +# define __STL_BEGIN_NAMESPACE namespace std { +# define __STL_END_NAMESPACE }; +# endif +#ifndef __STL_USE_STD_ALLOCATORS +#define __STL_USE_STD_ALLOCATORS +#endif +#endif + +/* A hack to deal with gcc 3.1. If you are using gcc3.1 and later, */ +/* you should probably really use gc_allocator.h instead. */ +#if defined (__GNUC__) && \ + (__GNUC__ > 3 || (__GNUC__ == 3 && (__GNUC_MINOR__ >= 1))) +# define simple_alloc __simple_alloc +#endif + +#define GC_ALLOC_H + +#include +#include + +// The following need to match collector data structures. +// We can't include gc_priv.h, since that pulls in way too much stuff. +// This should eventually be factored out into another include file. + +extern "C" { + GC_API void ** const GC_objfreelist_ptr; + GC_API void ** const GC_aobjfreelist_ptr; + GC_API void ** const GC_uobjfreelist_ptr; + GC_API void ** const GC_auobjfreelist_ptr; + + GC_API void GC_CALL GC_incr_bytes_allocd(size_t bytes); + GC_API void GC_CALL GC_incr_bytes_freed(size_t bytes); + + GC_API char * GC_CALL GC_generic_malloc_words_small(size_t word, int kind); + /* FIXME: Doesn't exist anymore. */ +} + +// Object kinds; must match PTRFREE, NORMAL, UNCOLLECTABLE, and +// AUNCOLLECTABLE in gc_priv.h. + +enum { GC_PTRFREE = 0, GC_NORMAL = 1, GC_UNCOLLECTABLE = 2, + GC_AUNCOLLECTABLE = 3 }; + +enum { GC_max_fast_bytes = 255 }; + +enum { GC_byte_alignment = 8 }; + +#if defined(CPPCHECK) + const unsigned GC_bytes_per_word = sizeof(char *); + const unsigned GC_word_alignment = GC_byte_alignment/GC_bytes_per_word; +#else + enum { GC_bytes_per_word = sizeof(char *) }; + enum { GC_word_alignment = GC_byte_alignment/GC_bytes_per_word }; +#endif + +inline void * &GC_obj_link(void * p) +{ return *reinterpret_cast(p); } + +// Compute a number of words >= n+1 bytes. +// The +1 allows for pointers one past the end. +inline size_t GC_round_up(size_t n) +{ + return ((n + GC_byte_alignment)/GC_byte_alignment)*GC_word_alignment; +} + +// The same but don't allow for extra byte. +inline size_t GC_round_up_uncollectable(size_t n) +{ + return ((n + GC_byte_alignment - 1)/GC_byte_alignment)*GC_word_alignment; +} + +template +class GC_aux_template { +public: + // File local count of allocated words. Occasionally this is + // added into the global count. A separate count is necessary since the + // real one must be updated with a procedure call. + static size_t GC_bytes_recently_allocd; + + // Same for uncollectible memory. Not yet reflected in either + // GC_bytes_recently_allocd or GC_non_gc_bytes. + static size_t GC_uncollectable_bytes_recently_allocd; + + // Similar counter for explicitly deallocated memory. + static size_t GC_bytes_recently_freed; + + // Again for uncollectible memory. + static size_t GC_uncollectable_bytes_recently_freed; + + static void * GC_out_of_line_malloc(size_t nwords, int kind); +}; + +template +size_t GC_aux_template::GC_bytes_recently_allocd = 0; + +template +size_t GC_aux_template::GC_uncollectable_bytes_recently_allocd = 0; + +template +size_t GC_aux_template::GC_bytes_recently_freed = 0; + +template +size_t GC_aux_template::GC_uncollectable_bytes_recently_freed = 0; + +template +void * GC_aux_template::GC_out_of_line_malloc(size_t nwords, int kind) +{ + GC_bytes_recently_allocd += GC_uncollectable_bytes_recently_allocd; + GC_non_gc_bytes += + GC_uncollectable_bytes_recently_allocd; + GC_uncollectable_bytes_recently_allocd = 0; + + GC_bytes_recently_freed += GC_uncollectable_bytes_recently_freed; + GC_non_gc_bytes -= GC_uncollectable_bytes_recently_freed; + GC_uncollectable_bytes_recently_freed = 0; + + GC_incr_bytes_allocd(GC_bytes_recently_allocd); + GC_bytes_recently_allocd = 0; + + GC_incr_bytes_freed(GC_bytes_recently_freed); + GC_bytes_recently_freed = 0; + + return GC_generic_malloc_words_small(nwords, kind); +} + +typedef GC_aux_template<0> GC_aux; + +// A fast, single-threaded, garbage-collected allocator +// We assume the first word will be immediately overwritten. +// In this version, deallocation is not a no-op, and explicit +// deallocation is likely to help performance. +template +class single_client_gc_alloc_template { + public: + static void * allocate(size_t n) + { + size_t nwords = GC_round_up(n); + void ** flh; + void * op; + + if (n > GC_max_fast_bytes) return GC_malloc(n); + flh = &GC_objfreelist_ptr[nwords]; + op = *flh; + if (0 == op) { + return GC_aux::GC_out_of_line_malloc(nwords, GC_NORMAL); + } + *flh = GC_obj_link(op); + GC_aux::GC_bytes_recently_allocd += nwords * GC_bytes_per_word; + return op; + } + static void * ptr_free_allocate(size_t n) + { + size_t nwords = GC_round_up(n); + void ** flh; + void * op; + + if (n > GC_max_fast_bytes) return GC_malloc_atomic(n); + flh = &GC_aobjfreelist_ptr[nwords]; + op = *flh; + if (0 == op) { + return GC_aux::GC_out_of_line_malloc(nwords, GC_PTRFREE); + } + *flh = GC_obj_link(op); + GC_aux::GC_bytes_recently_allocd += nwords * GC_bytes_per_word; + return op; + } + static void deallocate(void *p, size_t n) + { + if (n > GC_max_fast_bytes) { + GC_free(p); + } else { + size_t nwords = GC_round_up(n); + void ** flh = &GC_objfreelist_ptr[nwords]; + + GC_obj_link(p) = *flh; + memset(reinterpret_cast(p) + GC_bytes_per_word, 0, + GC_bytes_per_word * (nwords - 1)); + *flh = p; + GC_aux::GC_bytes_recently_freed += nwords * GC_bytes_per_word; + } + } + static void ptr_free_deallocate(void *p, size_t n) + { + if (n > GC_max_fast_bytes) { + GC_free(p); + } else { + size_t nwords = GC_round_up(n); + void ** flh = &GC_aobjfreelist_ptr[nwords]; + + GC_obj_link(p) = *flh; + *flh = p; + GC_aux::GC_bytes_recently_freed += nwords * GC_bytes_per_word; + } + } +}; + +typedef single_client_gc_alloc_template<0> single_client_gc_alloc; + +// Once more, for uncollectible objects. +template +class single_client_traceable_alloc_template { + public: + static void * allocate(size_t n) + { + size_t nwords = GC_round_up_uncollectable(n); + void ** flh; + void * op; + + if (n > GC_max_fast_bytes) return GC_malloc_uncollectable(n); + flh = &GC_uobjfreelist_ptr[nwords]; + op = *flh; + if (0 == op) { + return GC_aux::GC_out_of_line_malloc(nwords, GC_UNCOLLECTABLE); + } + *flh = GC_obj_link(op); + GC_aux::GC_uncollectable_bytes_recently_allocd += + nwords * GC_bytes_per_word; + return op; + } + static void * ptr_free_allocate(size_t n) + { + size_t nwords = GC_round_up_uncollectable(n); + void ** flh; + void * op; + + if (n > GC_max_fast_bytes) return GC_malloc_atomic_uncollectable(n); + flh = &GC_auobjfreelist_ptr[nwords]; + op = *flh; + if (0 == op) { + return GC_aux::GC_out_of_line_malloc(nwords, GC_AUNCOLLECTABLE); + } + *flh = GC_obj_link(op); + GC_aux::GC_uncollectable_bytes_recently_allocd += + nwords * GC_bytes_per_word; + return op; + } + static void deallocate(void *p, size_t n) + { + if (n > GC_max_fast_bytes) { + GC_free(p); + } else { + size_t nwords = GC_round_up_uncollectable(n); + void ** flh = &GC_uobjfreelist_ptr[nwords]; + + GC_obj_link(p) = *flh; + *flh = p; + GC_aux::GC_uncollectable_bytes_recently_freed += + nwords * GC_bytes_per_word; + } + } + static void ptr_free_deallocate(void *p, size_t n) + { + if (n > GC_max_fast_bytes) { + GC_free(p); + } else { + size_t nwords = GC_round_up_uncollectable(n); + void ** flh = &GC_auobjfreelist_ptr[nwords]; + + GC_obj_link(p) = *flh; + *flh = p; + GC_aux::GC_uncollectable_bytes_recently_freed += + nwords * GC_bytes_per_word; + } + } +}; + +typedef single_client_traceable_alloc_template<0> single_client_traceable_alloc; + +template < int dummy > +class gc_alloc_template { + public: + static void * allocate(size_t n) { return GC_malloc(n); } + static void * ptr_free_allocate(size_t n) + { return GC_malloc_atomic(n); } + static void deallocate(void *, size_t) { } + static void ptr_free_deallocate(void *, size_t) { } +}; + +typedef gc_alloc_template < 0 > gc_alloc; + +template < int dummy > +class traceable_alloc_template { + public: + static void * allocate(size_t n) { return GC_malloc_uncollectable(n); } + static void * ptr_free_allocate(size_t n) + { return GC_malloc_atomic_uncollectable(n); } + static void deallocate(void *p, size_t) { GC_free(p); } + static void ptr_free_deallocate(void *p, size_t) { GC_free(p); } +}; + +typedef traceable_alloc_template < 0 > traceable_alloc; + +// We want to specialize simple_alloc so that it does the right thing +// for all pointer-free types. At the moment there is no portable way to +// even approximate that. The following approximation should work for +// SGI compilers, and recent versions of g++. + +// GC_SPECIALIZE() is used internally. +#define GC_SPECIALIZE(T,alloc) \ + class simple_alloc { \ + public: \ + static T *allocate(size_t n) \ + { return 0 == n? 0 : \ + reinterpret_cast(alloc::ptr_free_allocate(n * sizeof(T))); } \ + static T *allocate(void) \ + { return reinterpret_cast(alloc::ptr_free_allocate(sizeof(T))); } \ + static void deallocate(T *p, size_t n) \ + { if (0 != n) alloc::ptr_free_deallocate(p, n * sizeof(T)); } \ + static void deallocate(T *p) \ + { alloc::ptr_free_deallocate(p, sizeof(T)); } \ + }; + +__STL_BEGIN_NAMESPACE + +GC_SPECIALIZE(char, gc_alloc) +GC_SPECIALIZE(int, gc_alloc) +GC_SPECIALIZE(unsigned, gc_alloc) +GC_SPECIALIZE(float, gc_alloc) +GC_SPECIALIZE(double, gc_alloc) + +GC_SPECIALIZE(char, traceable_alloc) +GC_SPECIALIZE(int, traceable_alloc) +GC_SPECIALIZE(unsigned, traceable_alloc) +GC_SPECIALIZE(float, traceable_alloc) +GC_SPECIALIZE(double, traceable_alloc) + +GC_SPECIALIZE(char, single_client_gc_alloc) +GC_SPECIALIZE(int, single_client_gc_alloc) +GC_SPECIALIZE(unsigned, single_client_gc_alloc) +GC_SPECIALIZE(float, single_client_gc_alloc) +GC_SPECIALIZE(double, single_client_gc_alloc) + +GC_SPECIALIZE(char, single_client_traceable_alloc) +GC_SPECIALIZE(int, single_client_traceable_alloc) +GC_SPECIALIZE(unsigned, single_client_traceable_alloc) +GC_SPECIALIZE(float, single_client_traceable_alloc) +GC_SPECIALIZE(double, single_client_traceable_alloc) + +__STL_END_NAMESPACE + +#ifdef __STL_USE_STD_ALLOCATORS + +__STL_BEGIN_NAMESPACE + +template +struct _Alloc_traits<_Tp, gc_alloc > +{ + static const bool _S_instanceless = true; + typedef simple_alloc<_Tp, gc_alloc > _Alloc_type; + typedef __allocator<_Tp, gc_alloc > allocator_type; +}; + +inline bool operator==(const gc_alloc&, + const gc_alloc&) +{ + return true; +} + +inline bool operator!=(const gc_alloc&, + const gc_alloc&) +{ + return false; +} + +template +struct _Alloc_traits<_Tp, single_client_gc_alloc > +{ + static const bool _S_instanceless = true; + typedef simple_alloc<_Tp, single_client_gc_alloc > _Alloc_type; + typedef __allocator<_Tp, single_client_gc_alloc > allocator_type; +}; + +inline bool operator==(const single_client_gc_alloc&, + const single_client_gc_alloc&) +{ + return true; +} + +inline bool operator!=(const single_client_gc_alloc&, + const single_client_gc_alloc&) +{ + return false; +} + +template +struct _Alloc_traits<_Tp, traceable_alloc > +{ + static const bool _S_instanceless = true; + typedef simple_alloc<_Tp, traceable_alloc > _Alloc_type; + typedef __allocator<_Tp, traceable_alloc > allocator_type; +}; + +inline bool operator==(const traceable_alloc&, + const traceable_alloc&) +{ + return true; +} + +inline bool operator!=(const traceable_alloc&, + const traceable_alloc&) +{ + return false; +} + +template +struct _Alloc_traits<_Tp, single_client_traceable_alloc > +{ + static const bool _S_instanceless = true; + typedef simple_alloc<_Tp, single_client_traceable_alloc > _Alloc_type; + typedef __allocator<_Tp, single_client_traceable_alloc > allocator_type; +}; + +inline bool operator==(const single_client_traceable_alloc&, + const single_client_traceable_alloc&) +{ + return true; +} + +inline bool operator!=(const single_client_traceable_alloc&, + const single_client_traceable_alloc&) +{ + return false; +} + +__STL_END_NAMESPACE + +#endif /* __STL_USE_STD_ALLOCATORS */ + +#endif /* GC_ALLOC_H */ diff --git a/include/private/darwin_semaphore.h b/include/private/darwin_semaphore.h new file mode 100644 index 0000000..62f185d --- /dev/null +++ b/include/private/darwin_semaphore.h @@ -0,0 +1,80 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2009 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_DARWIN_SEMAPHORE_H +#define GC_DARWIN_SEMAPHORE_H + +#if !defined(GC_DARWIN_THREADS) +# error darwin_semaphore.h included with GC_DARWIN_THREADS not defined +#endif + +/* This is a very simple semaphore implementation for Darwin. It is */ +/* implemented in terms of pthread calls so it is not async signal */ +/* safe. But this is not a problem because signals are not used to */ +/* suspend threads on Darwin. */ + +typedef struct { + pthread_mutex_t mutex; + pthread_cond_t cond; + int value; +} sem_t; + +GC_INLINE int sem_init(sem_t *sem, int pshared, int value) { + if (pshared != 0) { + errno = EPERM; /* unsupported */ + return -1; + } + sem->value = value; + if (pthread_mutex_init(&sem->mutex, NULL) != 0) + return -1; + if (pthread_cond_init(&sem->cond, NULL) != 0) { + (void)pthread_mutex_destroy(&sem->mutex); + return -1; + } + return 0; +} + +GC_INLINE int sem_post(sem_t *sem) { + if (pthread_mutex_lock(&sem->mutex) != 0) + return -1; + sem->value++; + if (pthread_cond_signal(&sem->cond) != 0) { + (void)pthread_mutex_unlock(&sem->mutex); + return -1; + } + return pthread_mutex_unlock(&sem->mutex) != 0 ? -1 : 0; +} + +GC_INLINE int sem_wait(sem_t *sem) { + if (pthread_mutex_lock(&sem->mutex) != 0) + return -1; + while (sem->value == 0) { + if (pthread_cond_wait(&sem->cond, &sem->mutex) != 0) { + (void)pthread_mutex_unlock(&sem->mutex); + return -1; + } + } + sem->value--; + return pthread_mutex_unlock(&sem->mutex) != 0 ? -1 : 0; +} + +GC_INLINE int sem_destroy(sem_t *sem) { + return pthread_cond_destroy(&sem->cond) != 0 + || pthread_mutex_destroy(&sem->mutex) != 0 ? -1 : 0; +} + +#endif diff --git a/include/private/darwin_stop_world.h b/include/private/darwin_stop_world.h new file mode 100644 index 0000000..399304e --- /dev/null +++ b/include/private/darwin_stop_world.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2009 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_DARWIN_STOP_WORLD_H +#define GC_DARWIN_STOP_WORLD_H + +#if !defined(GC_DARWIN_THREADS) +# error darwin_stop_world.h included without GC_DARWIN_THREADS defined +#endif + +#include +#include + +struct thread_stop_info { + mach_port_t mach_thread; + ptr_t stack_ptr; /* Valid only when thread is in a "blocked" state. */ +}; + +#ifndef DARWIN_DONT_PARSE_STACK + GC_INNER ptr_t GC_FindTopOfStack(unsigned long); +#endif + +#ifdef MPROTECT_VDB + GC_INNER void GC_mprotect_stop(void); + GC_INNER void GC_mprotect_resume(void); +#endif + +#if defined(PARALLEL_MARK) && !defined(GC_NO_THREADS_DISCOVERY) + GC_INNER GC_bool GC_is_mach_marker(thread_act_t); +#endif + +#endif diff --git a/include/private/dbg_mlc.h b/include/private/dbg_mlc.h new file mode 100644 index 0000000..ae2c70e --- /dev/null +++ b/include/private/dbg_mlc.h @@ -0,0 +1,170 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. + * Copyright (c) 1997 by Silicon Graphics. All rights reserved. + * Copyright (c) 1999 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* + * This is mostly an internal header file. Typical clients should + * not use it. Clients that define their own object kinds with + * debugging allocators will probably want to include this, however. + * No attempt is made to keep the namespace clean. This should not be + * included from header files that are frequently included by clients. + */ + +#ifndef _DBG_MLC_H +#define _DBG_MLC_H + +#include "gc_priv.h" +#ifdef KEEP_BACK_PTRS +# include "gc_backptr.h" +#endif + +#if CPP_WORDSZ == 32 +# define START_FLAG (word)0xfedcedcb +# define END_FLAG (word)0xbcdecdef +#else +# define START_FLAG GC_WORD_C(0xFEDCEDCBfedcedcb) +# define END_FLAG GC_WORD_C(0xBCDECDEFbcdecdef) +#endif + /* Stored both one past the end of user object, and one before */ + /* the end of the object as seen by the allocator. */ + +#if defined(KEEP_BACK_PTRS) || defined(PRINT_BLACK_LIST) \ + || defined(MAKE_BACK_GRAPH) + /* Pointer "source"s that aren't real locations. */ + /* Used in oh_back_ptr fields and as "source" */ + /* argument to some marking functions. */ +# define NOT_MARKED (ptr_t)0 +# define MARKED_FOR_FINALIZATION ((ptr_t)(word)2) + /* Object was marked because it is finalizable. */ +# define MARKED_FROM_REGISTER ((ptr_t)(word)4) + /* Object was marked from a register. Hence the */ + /* source of the reference doesn't have an address. */ +#endif /* KEEP_BACK_PTRS || PRINT_BLACK_LIST */ + +/* Object header */ +typedef struct { +# if defined(KEEP_BACK_PTRS) || defined(MAKE_BACK_GRAPH) + /* We potentially keep two different kinds of back */ + /* pointers. KEEP_BACK_PTRS stores a single back */ + /* pointer in each reachable object to allow reporting */ + /* of why an object was retained. MAKE_BACK_GRAPH */ + /* builds a graph containing the inverse of all */ + /* "points-to" edges including those involving */ + /* objects that have just become unreachable. This */ + /* allows detection of growing chains of unreachable */ + /* objects. It may be possible to eventually combine */ + /* both, but for now we keep them separate. Both */ + /* kinds of back pointers are hidden using the */ + /* following macros. In both cases, the plain version */ + /* is constrained to have an least significant bit of 1, */ + /* to allow it to be distinguished from a free list */ + /* link. This means the plain version must have an */ + /* lsb of 0. */ + /* Note that blocks dropped by black-listing will */ + /* also have the lsb clear once debugging has */ + /* started. */ + /* We're careful never to overwrite a value with lsb 0. */ +# if ALIGNMENT == 1 + /* Fudge back pointer to be even. */ +# define HIDE_BACK_PTR(p) GC_HIDE_POINTER(~1 & (word)(p)) +# else +# define HIDE_BACK_PTR(p) GC_HIDE_POINTER(p) +# endif +# ifdef KEEP_BACK_PTRS + GC_hidden_pointer oh_back_ptr; +# endif +# ifdef MAKE_BACK_GRAPH + GC_hidden_pointer oh_bg_ptr; +# endif +# if defined(KEEP_BACK_PTRS) != defined(MAKE_BACK_GRAPH) + /* Keep double-pointer-sized alignment. */ + word oh_dummy; +# endif +# endif + const char * oh_string; /* object descriptor string */ + word oh_int; /* object descriptor integers */ +# ifdef NEED_CALLINFO + struct callinfo oh_ci[NFRAMES]; +# endif +# ifndef SHORT_DBG_HDRS + word oh_sz; /* Original malloc arg. */ + word oh_sf; /* start flag */ +# endif /* SHORT_DBG_HDRS */ +} oh; +/* The size of the above structure is assumed not to de-align things, */ +/* and to be a multiple of the word length. */ + +#ifdef SHORT_DBG_HDRS +# define DEBUG_BYTES (sizeof (oh)) +# define UNCOLLECTABLE_DEBUG_BYTES DEBUG_BYTES +#else + /* Add space for END_FLAG, but use any extra space that was already */ + /* added to catch off-the-end pointers. */ + /* For uncollectible objects, the extra byte is not added. */ +# define UNCOLLECTABLE_DEBUG_BYTES (sizeof (oh) + sizeof (word)) +# define DEBUG_BYTES (UNCOLLECTABLE_DEBUG_BYTES - EXTRA_BYTES) +#endif + +/* Round bytes to words without adding extra byte at end. */ +#define SIMPLE_ROUNDED_UP_WORDS(n) BYTES_TO_WORDS((n) + WORDS_TO_BYTES(1) - 1) + +/* ADD_CALL_CHAIN stores a (partial) call chain into an object */ +/* header. It may be called with or without the allocation */ +/* lock. */ +/* PRINT_CALL_CHAIN prints the call chain stored in an object */ +/* to stderr. It requires that we do not hold the lock. */ +#if defined(SAVE_CALL_CHAIN) + struct callinfo; + GC_INNER void GC_save_callers(struct callinfo info[NFRAMES]); + GC_INNER void GC_print_callers(struct callinfo info[NFRAMES]); +# define ADD_CALL_CHAIN(base, ra) GC_save_callers(((oh *)(base)) -> oh_ci) +# define PRINT_CALL_CHAIN(base) GC_print_callers(((oh *)(base)) -> oh_ci) +#elif defined(GC_ADD_CALLER) + struct callinfo; + GC_INNER void GC_print_callers(struct callinfo info[NFRAMES]); +# define ADD_CALL_CHAIN(base, ra) ((oh *)(base)) -> oh_ci[0].ci_pc = (ra) +# define PRINT_CALL_CHAIN(base) GC_print_callers(((oh *)(base)) -> oh_ci) +#else +# define ADD_CALL_CHAIN(base, ra) +# define PRINT_CALL_CHAIN(base) +#endif + +#ifdef GC_ADD_CALLER +# define OPT_RA ra, +#else +# define OPT_RA +#endif + +/* Check whether object with base pointer p has debugging info */ +/* p is assumed to point to a legitimate object in our part */ +/* of the heap. */ +#ifdef SHORT_DBG_HDRS +# define GC_has_other_debug_info(p) 1 +#else + GC_INNER int GC_has_other_debug_info(ptr_t p); +#endif + +#if defined(KEEP_BACK_PTRS) || defined(MAKE_BACK_GRAPH) +# ifdef SHORT_DBG_HDRS +# error Non-ptr stored in object results in GC_HAS_DEBUG_INFO malfunction + /* We may mistakenly conclude that p has a debugging wrapper. */ +# endif +# define GC_HAS_DEBUG_INFO(p) \ + ((*((word *)p) & 1) && GC_has_other_debug_info(p) > 0) +#else +# define GC_HAS_DEBUG_INFO(p) (GC_has_other_debug_info(p) > 0) +#endif + +#endif /* _DBG_MLC_H */ diff --git a/include/private/gc_hdrs.h b/include/private/gc_hdrs.h new file mode 100644 index 0000000..a7892a3 --- /dev/null +++ b/include/private/gc_hdrs.h @@ -0,0 +1,211 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_HEADERS_H +#define GC_HEADERS_H + +typedef struct hblkhdr hdr; + +#if CPP_WORDSZ != 32 && CPP_WORDSZ < 36 +# error Get a real machine +#endif + +/* + * The 2 level tree data structure that is used to find block headers. + * If there are more than 32 bits in a pointer, the top level is a hash + * table. + * + * This defines HDR, GET_HDR, and SET_HDR, the main macros used to + * retrieve and set object headers. + * + * We take advantage of a header lookup + * cache. This is a locally declared direct mapped cache, used inside + * the marker. The HC_GET_HDR macro uses and maintains this + * cache. Assuming we get reasonable hit rates, this shaves a few + * memory references from each pointer validation. + */ + +#if CPP_WORDSZ > 32 +# define HASH_TL +#endif + +/* Define appropriate out-degrees for each of the two tree levels */ +#if defined(LARGE_CONFIG) || !defined(SMALL_CONFIG) +# define LOG_BOTTOM_SZ 10 +#else +# define LOG_BOTTOM_SZ 11 + /* Keep top index size reasonable with smaller blocks. */ +#endif +#define BOTTOM_SZ (1 << LOG_BOTTOM_SZ) + +#ifndef HASH_TL +# define LOG_TOP_SZ (WORDSZ - LOG_BOTTOM_SZ - LOG_HBLKSIZE) +#else +# define LOG_TOP_SZ 11 +#endif +#define TOP_SZ (1 << LOG_TOP_SZ) + +/* #define COUNT_HDR_CACHE_HITS */ + +#ifdef COUNT_HDR_CACHE_HITS + extern word GC_hdr_cache_hits; /* used for debugging/profiling */ + extern word GC_hdr_cache_misses; +# define HC_HIT() ++GC_hdr_cache_hits +# define HC_MISS() ++GC_hdr_cache_misses +#else +# define HC_HIT() +# define HC_MISS() +#endif + +typedef struct hce { + word block_addr; /* right shifted by LOG_HBLKSIZE */ + hdr * hce_hdr; +} hdr_cache_entry; + +#define HDR_CACHE_SIZE 8 /* power of 2 */ + +#define DECLARE_HDR_CACHE \ + hdr_cache_entry hdr_cache[HDR_CACHE_SIZE] + +#define INIT_HDR_CACHE BZERO(hdr_cache, sizeof(hdr_cache)) + +#define HCE(h) hdr_cache + (((word)(h) >> LOG_HBLKSIZE) & (HDR_CACHE_SIZE-1)) + +#define HCE_VALID_FOR(hce,h) ((hce) -> block_addr == \ + ((word)(h) >> LOG_HBLKSIZE)) + +#define HCE_HDR(h) ((hce) -> hce_hdr) + +#ifdef PRINT_BLACK_LIST + GC_INNER hdr * GC_header_cache_miss(ptr_t p, hdr_cache_entry *hce, + ptr_t source); +# define HEADER_CACHE_MISS(p, hce, source) \ + GC_header_cache_miss(p, hce, source) +#else + GC_INNER hdr * GC_header_cache_miss(ptr_t p, hdr_cache_entry *hce); +# define HEADER_CACHE_MISS(p, hce, source) GC_header_cache_miss(p, hce) +#endif + +/* Set hhdr to the header for p. Analogous to GET_HDR below, */ +/* except that in the case of large objects, it gets the header for */ +/* the object beginning if GC_all_interior_pointers is set. */ +/* Returns zero if p points to somewhere other than the first page */ +/* of an object, and it is not a valid pointer to the object. */ +#define HC_GET_HDR(p, hhdr, source) \ + { /* cannot use do-while(0) here */ \ + hdr_cache_entry * hce = HCE(p); \ + if (EXPECT(HCE_VALID_FOR(hce, p), TRUE)) { \ + HC_HIT(); \ + hhdr = hce -> hce_hdr; \ + } else { \ + hhdr = HEADER_CACHE_MISS(p, hce, source); \ + if (NULL == hhdr) break; /* go to the enclosing loop end */ \ + } \ + } + +typedef struct bi { + hdr * index[BOTTOM_SZ]; + /* + * The bottom level index contains one of three kinds of values: + * 0 means we're not responsible for this block, + * or this is a block other than the first one in a free block. + * 1 < (long)X <= MAX_JUMP means the block starts at least + * X * HBLKSIZE bytes before the current address. + * A valid pointer points to a hdr structure. (The above can't be + * valid pointers due to the GET_MEM return convention.) + */ + struct bi * asc_link; /* All indices are linked in */ + /* ascending order... */ + struct bi * desc_link; /* ... and in descending order. */ + word key; /* high order address bits. */ +# ifdef HASH_TL + struct bi * hash_link; /* Hash chain link. */ +# endif +} bottom_index; + +/* bottom_index GC_all_nils; - really part of GC_arrays */ + +/* extern bottom_index * GC_top_index []; - really part of GC_arrays */ + /* Each entry points to a bottom_index. */ + /* On a 32 bit machine, it points to */ + /* the index for a set of high order */ + /* bits equal to the index. For longer */ + /* addresses, we hash the high order */ + /* bits to compute the index in */ + /* GC_top_index, and each entry points */ + /* to a hash chain. */ + /* The last entry in each chain is */ + /* GC_all_nils. */ + + +#define MAX_JUMP (HBLKSIZE - 1) + +#define HDR_FROM_BI(bi, p) \ + ((bi)->index[((word)(p) >> LOG_HBLKSIZE) & (BOTTOM_SZ - 1)]) +#ifndef HASH_TL +# define BI(p) (GC_top_index \ + [(word)(p) >> (LOG_BOTTOM_SZ + LOG_HBLKSIZE)]) +# define HDR_INNER(p) HDR_FROM_BI(BI(p),p) +# ifdef SMALL_CONFIG +# define HDR(p) GC_find_header((ptr_t)(p)) +# else +# define HDR(p) HDR_INNER(p) +# endif +# define GET_BI(p, bottom_indx) (void)((bottom_indx) = BI(p)) +# define GET_HDR(p, hhdr) (void)((hhdr) = HDR(p)) +# define SET_HDR(p, hhdr) (void)(HDR_INNER(p) = (hhdr)) +# define GET_HDR_ADDR(p, ha) (void)((ha) = &HDR_INNER(p)) +#else /* hash */ + /* Hash function for tree top level */ +# define TL_HASH(hi) ((hi) & (TOP_SZ - 1)) + /* Set bottom_indx to point to the bottom index for address p */ +# define GET_BI(p, bottom_indx) \ + do { \ + register word hi = \ + (word)(p) >> (LOG_BOTTOM_SZ + LOG_HBLKSIZE); \ + register bottom_index * _bi = GC_top_index[TL_HASH(hi)]; \ + while (_bi -> key != hi && _bi != GC_all_nils) \ + _bi = _bi -> hash_link; \ + (bottom_indx) = _bi; \ + } while (0) +# define GET_HDR_ADDR(p, ha) \ + do { \ + register bottom_index * bi; \ + GET_BI(p, bi); \ + (ha) = &HDR_FROM_BI(bi, p); \ + } while (0) +# define GET_HDR(p, hhdr) \ + do { \ + register hdr ** _ha; \ + GET_HDR_ADDR(p, _ha); \ + (hhdr) = *_ha; \ + } while (0) +# define SET_HDR(p, hhdr) \ + do { \ + register hdr ** _ha; \ + GET_HDR_ADDR(p, _ha); \ + *_ha = (hhdr); \ + } while (0) +# define HDR(p) GC_find_header((ptr_t)(p)) +#endif + +/* Is the result a forwarding address to someplace closer to the */ +/* beginning of the block or NULL? */ +#define IS_FORWARDING_ADDR_OR_NIL(hhdr) ((size_t) (hhdr) <= MAX_JUMP) + +/* Get an HBLKSIZE aligned address closer to the beginning of the block */ +/* h. Assumes hhdr == HDR(h) and IS_FORWARDING_ADDR(hhdr). */ +#define FORWARDED_ADDR(h, hhdr) ((struct hblk *)(h) - (size_t)(hhdr)) + +#endif /* GC_HEADERS_H */ diff --git a/include/private/gc_locks.h b/include/private/gc_locks.h new file mode 100644 index 0000000..d08dcc4 --- /dev/null +++ b/include/private/gc_locks.h @@ -0,0 +1,241 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved. + * Copyright (c) 1999 by Hewlett-Packard Company. All rights reserved. + * + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_LOCKS_H +#define GC_LOCKS_H + +/* + * Mutual exclusion between allocator/collector routines. + * Needed if there is more than one allocator thread. + * DCL_LOCK_STATE declares any local variables needed by LOCK and UNLOCK. + * + * Note that I_HOLD_LOCK and I_DONT_HOLD_LOCK are used only positively + * in assertions, and may return TRUE in the "don't know" case. + */ +# ifdef THREADS + +# if defined(GC_PTHREADS) && !defined(GC_WIN32_THREADS) +# include "atomic_ops.h" +# endif + +# ifdef PCR +# include +# include + GC_EXTERN PCR_Th_ML GC_allocate_ml; +# if defined(CPPCHECK) +# define DCL_LOCK_STATE /* empty */ +# else +# define DCL_LOCK_STATE \ + PCR_ERes GC_fastLockRes; PCR_sigset_t GC_old_sig_mask +# endif +# define UNCOND_LOCK() PCR_Th_ML_Acquire(&GC_allocate_ml) +# define UNCOND_UNLOCK() PCR_Th_ML_Release(&GC_allocate_ml) +# endif + +# if (!defined(AO_HAVE_test_and_set_acquire) || defined(GC_RTEMS_PTHREADS) \ + || defined(SN_TARGET_PS3) || defined(GC_WIN32_THREADS) \ + || defined(LINT2)) && defined(GC_PTHREADS) +# define USE_PTHREAD_LOCKS +# endif + +# if defined(GC_WIN32_THREADS) && !defined(USE_PTHREAD_LOCKS) +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN 1 +# endif +# define NOSERVICE +# include +# define NO_THREAD (DWORD)(-1) + GC_EXTERN CRITICAL_SECTION GC_allocate_ml; +# ifdef GC_ASSERTIONS + GC_EXTERN DWORD GC_lock_holder; +# define SET_LOCK_HOLDER() GC_lock_holder = GetCurrentThreadId() +# define UNSET_LOCK_HOLDER() GC_lock_holder = NO_THREAD +# define I_HOLD_LOCK() (!GC_need_to_lock \ + || GC_lock_holder == GetCurrentThreadId()) +# define I_DONT_HOLD_LOCK() (!GC_need_to_lock \ + || GC_lock_holder != GetCurrentThreadId()) +# define UNCOND_LOCK() \ + { GC_ASSERT(I_DONT_HOLD_LOCK()); \ + EnterCriticalSection(&GC_allocate_ml); \ + SET_LOCK_HOLDER(); } +# define UNCOND_UNLOCK() \ + { GC_ASSERT(I_HOLD_LOCK()); UNSET_LOCK_HOLDER(); \ + LeaveCriticalSection(&GC_allocate_ml); } +# else +# define UNCOND_LOCK() EnterCriticalSection(&GC_allocate_ml) +# define UNCOND_UNLOCK() LeaveCriticalSection(&GC_allocate_ml) +# endif /* !GC_ASSERTIONS */ +# elif defined(GC_PTHREADS) +# include + + /* Posix allows pthread_t to be a struct, though it rarely is. */ + /* Unfortunately, we need to use a pthread_t to index a data */ + /* structure. It also helps if comparisons don't involve a */ + /* function call. Hence we introduce platform-dependent macros */ + /* to compare pthread_t ids and to map them to integers. */ + /* The mapping to integers does not need to result in different */ + /* integers for each thread, though that should be true as much */ + /* as possible. */ + /* Refine to exclude platforms on which pthread_t is struct. */ +# if !defined(GC_WIN32_PTHREADS) +# define NUMERIC_THREAD_ID(id) ((unsigned long)(id)) +# define THREAD_EQUAL(id1, id2) ((id1) == (id2)) +# define NUMERIC_THREAD_ID_UNIQUE +# elif defined(__WINPTHREADS_VERSION_MAJOR) /* winpthreads */ +# define NUMERIC_THREAD_ID(id) ((unsigned long)(id)) +# define THREAD_EQUAL(id1, id2) ((id1) == (id2)) +# ifndef _WIN64 + /* NUMERIC_THREAD_ID is 32-bit and not unique on Win64. */ +# define NUMERIC_THREAD_ID_UNIQUE +# endif +# else /* pthreads-win32 */ +# define NUMERIC_THREAD_ID(id) ((unsigned long)(word)(id.p)) + /* Using documented internal details of pthreads-win32 library. */ + /* Faster than pthread_equal(). Should not change with */ + /* future versions of pthreads-win32 library. */ +# define THREAD_EQUAL(id1, id2) ((id1.p == id2.p) && (id1.x == id2.x)) +# undef NUMERIC_THREAD_ID_UNIQUE + /* Generic definitions based on pthread_equal() always work but */ + /* will result in poor performance (as NUMERIC_THREAD_ID is */ + /* defined to just a constant) and weak assertion checking. */ +# endif +# define NO_THREAD ((unsigned long)(-1l)) + /* != NUMERIC_THREAD_ID(pthread_self()) for any thread */ + +# if !defined(THREAD_LOCAL_ALLOC) && !defined(USE_PTHREAD_LOCKS) + /* In the THREAD_LOCAL_ALLOC case, the allocation lock tends to */ + /* be held for long periods, if it is held at all. Thus spinning */ + /* and sleeping for fixed periods are likely to result in */ + /* significant wasted time. We thus rely mostly on queued locks. */ +# define USE_SPIN_LOCK + GC_EXTERN volatile AO_TS_t GC_allocate_lock; + GC_INNER void GC_lock(void); + /* Allocation lock holder. Only set if acquired by client through */ + /* GC_call_with_alloc_lock. */ +# ifdef GC_ASSERTIONS +# define UNCOND_LOCK() \ + { GC_ASSERT(I_DONT_HOLD_LOCK()); \ + if (AO_test_and_set_acquire(&GC_allocate_lock) == AO_TS_SET) \ + GC_lock(); \ + SET_LOCK_HOLDER(); } +# define UNCOND_UNLOCK() \ + { GC_ASSERT(I_HOLD_LOCK()); UNSET_LOCK_HOLDER(); \ + AO_CLEAR(&GC_allocate_lock); } +# else +# define UNCOND_LOCK() \ + { if (AO_test_and_set_acquire(&GC_allocate_lock) == AO_TS_SET) \ + GC_lock(); } +# define UNCOND_UNLOCK() AO_CLEAR(&GC_allocate_lock) +# endif /* !GC_ASSERTIONS */ +# else /* THREAD_LOCAL_ALLOC || USE_PTHREAD_LOCKS */ +# ifndef USE_PTHREAD_LOCKS +# define USE_PTHREAD_LOCKS +# endif +# endif /* THREAD_LOCAL_ALLOC || USE_PTHREAD_LOCKS */ +# ifdef USE_PTHREAD_LOCKS +# include + GC_EXTERN pthread_mutex_t GC_allocate_ml; +# ifdef GC_ASSERTIONS +# define UNCOND_LOCK() { GC_ASSERT(I_DONT_HOLD_LOCK()); \ + GC_lock(); SET_LOCK_HOLDER(); } +# define UNCOND_UNLOCK() \ + { GC_ASSERT(I_HOLD_LOCK()); UNSET_LOCK_HOLDER(); \ + pthread_mutex_unlock(&GC_allocate_ml); } +# else /* !GC_ASSERTIONS */ +# if defined(NO_PTHREAD_TRYLOCK) +# define UNCOND_LOCK() pthread_mutex_lock(&GC_allocate_ml) +# else +# define UNCOND_LOCK() \ + { if (0 != pthread_mutex_trylock(&GC_allocate_ml)) \ + GC_lock(); } +# endif +# define UNCOND_UNLOCK() pthread_mutex_unlock(&GC_allocate_ml) +# endif /* !GC_ASSERTIONS */ +# endif /* USE_PTHREAD_LOCKS */ +# ifdef GC_ASSERTIONS + GC_EXTERN unsigned long GC_lock_holder; +# define SET_LOCK_HOLDER() \ + GC_lock_holder = NUMERIC_THREAD_ID(pthread_self()) +# define UNSET_LOCK_HOLDER() GC_lock_holder = NO_THREAD +# define I_HOLD_LOCK() \ + (!GC_need_to_lock \ + || GC_lock_holder == NUMERIC_THREAD_ID(pthread_self())) +# ifndef NUMERIC_THREAD_ID_UNIQUE +# define I_DONT_HOLD_LOCK() 1 /* Conservatively say yes */ +# else +# define I_DONT_HOLD_LOCK() \ + (!GC_need_to_lock \ + || GC_lock_holder != NUMERIC_THREAD_ID(pthread_self())) +# endif +# endif /* GC_ASSERTIONS */ +# ifndef GC_WIN32_THREADS + GC_EXTERN volatile GC_bool GC_collecting; +# define ENTER_GC() (void)(GC_collecting = TRUE) +# define EXIT_GC() (void)(GC_collecting = FALSE) +# endif + GC_INNER void GC_lock(void); +# endif /* GC_PTHREADS */ +# if defined(GC_ALWAYS_MULTITHREADED) \ + && (defined(USE_PTHREAD_LOCKS) || defined(USE_SPIN_LOCK)) +# define GC_need_to_lock TRUE +# define set_need_to_lock() (void)0 +# else +# if defined(GC_ALWAYS_MULTITHREADED) && !defined(CPPCHECK) +# error Runtime initialization of GC lock is needed! +# endif +# undef GC_ALWAYS_MULTITHREADED + GC_EXTERN GC_bool GC_need_to_lock; +# define set_need_to_lock() (void)(GC_need_to_lock = TRUE) + /* We are multi-threaded now. */ +# endif + +# else /* !THREADS */ +# define LOCK() (void)0 +# define UNLOCK() (void)0 +# ifdef GC_ASSERTIONS +# define I_HOLD_LOCK() TRUE +# define I_DONT_HOLD_LOCK() TRUE + /* Used only in positive assertions or to test whether */ + /* we still need to acquire the lock. TRUE works in */ + /* either case. */ +# endif +# endif /* !THREADS */ + +#if defined(UNCOND_LOCK) && !defined(LOCK) +# if (defined(LINT2) && defined(USE_PTHREAD_LOCKS)) \ + || defined(GC_ALWAYS_MULTITHREADED) + /* Instruct code analysis tools not to care about GC_need_to_lock */ + /* influence to LOCK/UNLOCK semantic. */ +# define LOCK() UNCOND_LOCK() +# define UNLOCK() UNCOND_UNLOCK() +# else + /* At least two thread running; need to lock. */ +# define LOCK() do { if (GC_need_to_lock) UNCOND_LOCK(); } while (0) +# define UNLOCK() do { if (GC_need_to_lock) UNCOND_UNLOCK(); } while (0) +# endif +#endif + +# ifndef ENTER_GC +# define ENTER_GC() +# define EXIT_GC() +# endif + +# ifndef DCL_LOCK_STATE +# define DCL_LOCK_STATE +# endif + +#endif /* GC_LOCKS_H */ diff --git a/include/private/gc_pmark.h b/include/private/gc_pmark.h new file mode 100644 index 0000000..34057c0 --- /dev/null +++ b/include/private/gc_pmark.h @@ -0,0 +1,477 @@ +/* + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 2001 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +/* Private declarations of GC marker data structures and macros */ + +/* + * Declarations of mark stack. Needed by marker and client supplied mark + * routines. Transitively include gc_priv.h. + */ +#ifndef GC_PMARK_H +#define GC_PMARK_H + +#if defined(HAVE_CONFIG_H) && !defined(GC_PRIVATE_H) +# include "config.h" +#endif + +#ifndef GC_BUILD +# define GC_BUILD +#endif + +#if (defined(__linux__) || defined(__GLIBC__) || defined(__GNU__)) \ + && !defined(_GNU_SOURCE) && defined(GC_PTHREADS) \ + && !defined(GC_NO_PTHREAD_SIGMASK) +# define _GNU_SOURCE 1 +#endif + +#if defined(KEEP_BACK_PTRS) || defined(PRINT_BLACK_LIST) +# include "dbg_mlc.h" +#endif + +#ifndef GC_MARK_H +# include "../gc_mark.h" +#endif + +#ifndef GC_PRIVATE_H +# include "gc_priv.h" +#endif + +/* The real declarations of the following is in gc_priv.h, so that */ +/* we can avoid scanning the following table. */ +/* +mark_proc GC_mark_procs[MAX_MARK_PROCS]; +*/ + +#ifndef MARK_DESCR_OFFSET +# define MARK_DESCR_OFFSET sizeof(word) +#endif + +/* + * Mark descriptor stuff that should remain private for now, mostly + * because it's hard to export WORDSZ without including gcconfig.h. + */ +#define BITMAP_BITS (WORDSZ - GC_DS_TAG_BITS) +#define PROC(descr) \ + (GC_mark_procs[((descr) >> GC_DS_TAG_BITS) & (GC_MAX_MARK_PROCS-1)]) +#define ENV(descr) \ + ((descr) >> (GC_DS_TAG_BITS + GC_LOG_MAX_MARK_PROCS)) +#define MAX_ENV \ + (((word)1 << (WORDSZ - GC_DS_TAG_BITS - GC_LOG_MAX_MARK_PROCS)) - 1) + +GC_EXTERN unsigned GC_n_mark_procs; + +/* Number of mark stack entries to discard on overflow. */ +#define GC_MARK_STACK_DISCARDS (INITIAL_MARK_STACK_SIZE/8) + +GC_EXTERN size_t GC_mark_stack_size; + +#ifdef PARALLEL_MARK + /* + * Allow multiple threads to participate in the marking process. + * This works roughly as follows: + * The main mark stack never shrinks, but it can grow. + * + * The initiating threads holds the GC lock, and sets GC_help_wanted. + * + * Other threads: + * 1) update helper_count (while holding mark_lock.) + * 2) allocate a local mark stack + * repeatedly: + * 3) Steal a global mark stack entry by atomically replacing + * its descriptor with 0. + * 4) Copy it to the local stack. + * 5) Mark on the local stack until it is empty, or + * it may be profitable to copy it back. + * 6) If necessary, copy local stack to global one, + * holding mark lock. + * 7) Stop when the global mark stack is empty. + * 8) decrement helper_count (holding mark_lock). + * + * This is an experiment to see if we can do something along the lines + * of the University of Tokyo SGC in a less intrusive, though probably + * also less performant, way. + */ + + /* GC_mark_stack_top is protected by mark lock. */ + + /* + * GC_notify_all_marker() is used when GC_help_wanted is first set, + * when the last helper becomes inactive, + * when something is added to the global mark stack, and just after + * GC_mark_no is incremented. + * This could be split into multiple CVs (and probably should be to + * scale to really large numbers of processors.) + */ +#endif /* PARALLEL_MARK */ + +GC_INNER mse * GC_signal_mark_stack_overflow(mse *msp); + +/* Push the object obj with corresponding heap block header hhdr onto */ +/* the mark stack. */ +#define PUSH_OBJ(obj, hhdr, mark_stack_top, mark_stack_limit) \ + do { \ + register word _descr = (hhdr) -> hb_descr; \ + GC_ASSERT(!HBLK_IS_FREE(hhdr)); \ + if (_descr != 0) { \ + mark_stack_top++; \ + if ((word)mark_stack_top >= (word)(mark_stack_limit)) { \ + mark_stack_top = GC_signal_mark_stack_overflow(mark_stack_top); \ + } \ + mark_stack_top -> mse_start = (obj); \ + mark_stack_top -> mse_descr.w = _descr; \ + } \ + } while (0) + +/* Push the contents of current onto the mark stack if it is a valid */ +/* ptr to a currently unmarked object. Mark it. */ +#define PUSH_CONTENTS(current, mark_stack_top, mark_stack_limit, source) \ + do { \ + hdr * my_hhdr; \ + HC_GET_HDR(current, my_hhdr, source); /* contains "break" */ \ + PUSH_CONTENTS_HDR(current, mark_stack_top, mark_stack_limit, \ + source, my_hhdr, TRUE); \ + } while (0) + +/* Set mark bit, exit (using "break" statement) if it is already set. */ +#ifdef USE_MARK_BYTES + /* There is a race here, and we may set */ + /* the bit twice in the concurrent case. This can result in the */ + /* object being pushed twice. But that's only a performance issue. */ +# define SET_MARK_BIT_EXIT_IF_SET(hhdr, bit_no) \ + { /* cannot use do-while(0) here */ \ + char * mark_byte_addr = (char *)hhdr -> hb_marks + (bit_no); \ + if (*mark_byte_addr != 0) break; /* go to the enclosing loop end */ \ + *mark_byte_addr = 1; \ + } +#else +# ifdef PARALLEL_MARK + /* This is used only if we explicitly set USE_MARK_BITS. */ + /* The following may fail to exit even if the bit was already set. */ + /* For our uses, that's benign: */ +# define OR_WORD_EXIT_IF_SET(addr, bits) \ + { /* cannot use do-while(0) here */ \ + if (!(*(addr) & (bits))) { \ + AO_or((volatile AO_t *)(addr), (AO_t)(bits)); \ + } else { \ + break; /* go to the enclosing loop end */ \ + } \ + } +# else +# define OR_WORD_EXIT_IF_SET(addr, bits) \ + { /* cannot use do-while(0) here */ \ + word old = *(addr); \ + word my_bits = (bits); \ + if ((old & my_bits) != 0) \ + break; /* go to the enclosing loop end */ \ + *(addr) = old | my_bits; \ + } +# endif /* !PARALLEL_MARK */ +# define SET_MARK_BIT_EXIT_IF_SET(hhdr, bit_no) \ + { /* cannot use do-while(0) here */ \ + word * mark_word_addr = hhdr -> hb_marks + divWORDSZ(bit_no); \ + OR_WORD_EXIT_IF_SET(mark_word_addr, \ + (word)1 << modWORDSZ(bit_no)); /* contains "break" */ \ + } +#endif /* !USE_MARK_BYTES */ + +#ifdef PARALLEL_MARK +# define INCR_MARKS(hhdr) \ + AO_store(&hhdr->hb_n_marks, AO_load(&hhdr->hb_n_marks) + 1) +#else +# define INCR_MARKS(hhdr) (void)(++hhdr->hb_n_marks) +#endif + +#ifdef ENABLE_TRACE +# define TRACE(source, cmd) \ + if (GC_trace_addr != 0 && (ptr_t)(source) == GC_trace_addr) cmd +# define TRACE_TARGET(target, cmd) \ + if (GC_trace_addr != 0 && (target) == *(ptr_t *)GC_trace_addr) cmd +#else +# define TRACE(source, cmd) +# define TRACE_TARGET(source, cmd) +#endif + +#if defined(I386) && defined(__GNUC__) +# define LONG_MULT(hprod, lprod, x, y) \ + do { \ + __asm__ __volatile__("mull %2" : "=a"(lprod), "=d"(hprod) \ + : "g"(y), "0"(x)); \ + } while (0) +#else +# define LONG_MULT(hprod, lprod, x, y) \ + do { \ + unsigned long long prod = (unsigned long long)(x) \ + * (unsigned long long)(y); \ + GC_STATIC_ASSERT(sizeof(x) + sizeof(y) <= sizeof(prod)); \ + hprod = prod >> 32; \ + lprod = (unsigned32)prod; \ + } while (0) +#endif /* !I386 */ + +/* If the mark bit corresponding to current is not set, set it, and */ +/* push the contents of the object on the mark stack. Current points */ +/* to the beginning of the object. We rely on the fact that the */ +/* preceding header calculation will succeed for a pointer past the */ +/* first page of an object, only if it is in fact a valid pointer */ +/* to the object. Thus we can omit the otherwise necessary tests */ +/* here. Note in particular that the "displ" value is the displacement */ +/* from the beginning of the heap block, which may itself be in the */ +/* interior of a large object. */ +#ifdef MARK_BIT_PER_GRANULE +# define PUSH_CONTENTS_HDR(current, mark_stack_top, mark_stack_limit, \ + source, hhdr, do_offset_check) \ + do { \ + size_t displ = HBLKDISPL(current); /* Displacement in block; in bytes. */\ + /* displ is always within range. If current doesn't point to */ \ + /* first block, then we are in the all_interior_pointers case, and */ \ + /* it is safe to use any displacement value. */ \ + size_t gran_displ = BYTES_TO_GRANULES(displ); \ + size_t gran_offset = hhdr -> hb_map[gran_displ]; \ + size_t byte_offset = displ & (GRANULE_BYTES - 1); \ + ptr_t base = current; \ + /* The following always fails for large block references. */ \ + if (EXPECT((gran_offset | byte_offset) != 0, FALSE)) { \ + if ((hhdr -> hb_flags & LARGE_BLOCK) != 0) { \ + /* gran_offset is bogus. */ \ + size_t obj_displ; \ + base = (ptr_t)(hhdr -> hb_block); \ + obj_displ = (ptr_t)(current) - base; \ + if (obj_displ != displ) { \ + GC_ASSERT(obj_displ < hhdr -> hb_sz); \ + /* Must be in all_interior_pointer case, not first block */ \ + /* already did validity check on cache miss. */ \ + } else { \ + if (do_offset_check && !GC_valid_offsets[obj_displ]) { \ + GC_ADD_TO_BLACK_LIST_NORMAL(current, source); \ + break; /* go to the end of PUSH_CONTENTS_HDR */ \ + } \ + } \ + gran_displ = 0; \ + GC_ASSERT(hhdr -> hb_sz > HBLKSIZE || \ + hhdr -> hb_block == HBLKPTR(current)); \ + GC_ASSERT((word)hhdr->hb_block <= (word)(current)); \ + } else { \ + size_t obj_displ = GRANULES_TO_BYTES(gran_offset) \ + + byte_offset; \ + if (do_offset_check && !GC_valid_offsets[obj_displ]) { \ + GC_ADD_TO_BLACK_LIST_NORMAL(current, source); \ + break; \ + } \ + gran_displ -= gran_offset; \ + base -= obj_displ; \ + } \ + } \ + GC_ASSERT(hhdr == GC_find_header(base)); \ + GC_ASSERT(gran_displ % BYTES_TO_GRANULES(hhdr -> hb_sz) == 0); \ + TRACE(source, GC_log_printf("GC #%u: passed validity tests\n", \ + (unsigned)GC_gc_no)); \ + SET_MARK_BIT_EXIT_IF_SET(hhdr, gran_displ); \ + TRACE(source, GC_log_printf("GC #%u: previously unmarked\n", \ + (unsigned)GC_gc_no)); \ + TRACE_TARGET(base, \ + GC_log_printf("GC #%u: marking %p from %p instead\n", \ + (unsigned)GC_gc_no, (void *)base, (void *)(source))); \ + INCR_MARKS(hhdr); \ + GC_STORE_BACK_PTR((ptr_t)(source), base); \ + PUSH_OBJ(base, hhdr, mark_stack_top, mark_stack_limit); \ + } while (0) +#endif /* MARK_BIT_PER_GRANULE */ + +#ifdef MARK_BIT_PER_OBJ +# define PUSH_CONTENTS_HDR(current, mark_stack_top, mark_stack_limit, \ + source, hhdr, do_offset_check) \ + do { \ + size_t displ = HBLKDISPL(current); /* Displacement in block; in bytes. */\ + unsigned32 low_prod, high_prod; \ + unsigned32 inv_sz = hhdr -> hb_inv_sz; \ + ptr_t base = current; \ + LONG_MULT(high_prod, low_prod, (unsigned32)displ, inv_sz); \ + /* product is > and within sz_in_bytes of displ * sz_in_bytes * 2**32 */ \ + if (EXPECT(low_prod >> 16 != 0, FALSE)) { \ + /* FIXME: fails if offset is a multiple of HBLKSIZE which becomes 0 */ \ + if (inv_sz == LARGE_INV_SZ) { \ + size_t obj_displ; \ + base = (ptr_t)(hhdr -> hb_block); \ + obj_displ = (ptr_t)(current) - base; \ + if (obj_displ != displ) { \ + GC_ASSERT(obj_displ < hhdr -> hb_sz); \ + /* Must be in all_interior_pointer case, not first block */ \ + /* already did validity check on cache miss. */ \ + } else { \ + if (do_offset_check && !GC_valid_offsets[obj_displ]) { \ + GC_ADD_TO_BLACK_LIST_NORMAL(current, source); \ + break; /* go to the end of PUSH_CONTENTS_HDR */ \ + } \ + } \ + GC_ASSERT(hhdr -> hb_sz > HBLKSIZE || \ + hhdr -> hb_block == HBLKPTR(current)); \ + GC_ASSERT((word)hhdr->hb_block < (word)(current)); \ + } else { \ + size_t obj_displ; \ + /* Accurate enough if HBLKSIZE <= 2**15. */ \ + GC_STATIC_ASSERT(HBLKSIZE <= (1 << 15)); \ + obj_displ = (((low_prod >> 16) + 1) * hhdr->hb_sz) >> 16; \ + if (do_offset_check && !GC_valid_offsets[obj_displ]) { \ + GC_ADD_TO_BLACK_LIST_NORMAL(current, source); \ + break; \ + } \ + base -= obj_displ; \ + } \ + } \ + /* May get here for pointer to start of block not at */ \ + /* beginning of object. If so, it's valid, and we're fine. */ \ + GC_ASSERT(high_prod <= HBLK_OBJS(hhdr -> hb_sz)); \ + TRACE(source, GC_log_printf("GC #%u: passed validity tests\n", \ + (unsigned)GC_gc_no)); \ + SET_MARK_BIT_EXIT_IF_SET(hhdr, high_prod); \ + TRACE(source, GC_log_printf("GC #%u: previously unmarked\n", \ + (unsigned)GC_gc_no)); \ + TRACE_TARGET(base, \ + GC_log_printf("GC #%u: marking %p from %p instead\n", \ + (unsigned)GC_gc_no, (void *)base, (void *)(source))); \ + INCR_MARKS(hhdr); \ + GC_STORE_BACK_PTR((ptr_t)(source), base); \ + PUSH_OBJ(base, hhdr, mark_stack_top, mark_stack_limit); \ + } while (0) +#endif /* MARK_BIT_PER_OBJ */ + +#if defined(PRINT_BLACK_LIST) || defined(KEEP_BACK_PTRS) +# define PUSH_ONE_CHECKED_STACK(p, source) \ + GC_mark_and_push_stack((ptr_t)(p), (ptr_t)(source)) +#else +# define PUSH_ONE_CHECKED_STACK(p, source) \ + GC_mark_and_push_stack((ptr_t)(p)) +#endif + +/* + * Push a single value onto mark stack. Mark from the object pointed to by p. + * Invoke FIXUP_POINTER(p) before any further processing. + * P is considered valid even if it is an interior pointer. + * Previously marked objects are not pushed. Hence we make progress even + * if the mark stack overflows. + */ + +#ifdef NEED_FIXUP_POINTER + /* Try both the raw version and the fixed up one. */ +# define GC_PUSH_ONE_STACK(p, source) \ + do { \ + if ((word)(p) >= (word)GC_least_plausible_heap_addr \ + && (word)(p) < (word)GC_greatest_plausible_heap_addr) { \ + PUSH_ONE_CHECKED_STACK(p, source); \ + } \ + FIXUP_POINTER(p); \ + if ((word)(p) >= (word)GC_least_plausible_heap_addr \ + && (word)(p) < (word)GC_greatest_plausible_heap_addr) { \ + PUSH_ONE_CHECKED_STACK(p, source); \ + } \ + } while (0) +#else /* !NEED_FIXUP_POINTER */ +# define GC_PUSH_ONE_STACK(p, source) \ + do { \ + if ((word)(p) >= (word)GC_least_plausible_heap_addr \ + && (word)(p) < (word)GC_greatest_plausible_heap_addr) { \ + PUSH_ONE_CHECKED_STACK(p, source); \ + } \ + } while (0) +#endif + +/* As above, but interior pointer recognition as for normal heap pointers. */ +#define GC_PUSH_ONE_HEAP(p,source,mark_stack_top) \ + do { \ + FIXUP_POINTER(p); \ + if ((word)(p) >= (word)GC_least_plausible_heap_addr \ + && (word)(p) < (word)GC_greatest_plausible_heap_addr) \ + mark_stack_top = GC_mark_and_push((void *)(p), mark_stack_top, \ + GC_mark_stack_limit, (void * *)(source)); \ + } while (0) + +/* Mark starting at mark stack entry top (incl.) down to */ +/* mark stack entry bottom (incl.). Stop after performing */ +/* about one page worth of work. Return the new mark stack */ +/* top entry. */ +GC_INNER mse * GC_mark_from(mse * top, mse * bottom, mse *limit); + +#define MARK_FROM_MARK_STACK() \ + GC_mark_stack_top = GC_mark_from(GC_mark_stack_top, \ + GC_mark_stack, \ + GC_mark_stack + GC_mark_stack_size); + +#define GC_mark_stack_empty() ((word)GC_mark_stack_top < (word)GC_mark_stack) + +/* + * Mark from one finalizable object using the specified + * mark proc. May not mark the object pointed to by + * real_ptr. That is the job of the caller, if appropriate. + * Note that this is called with the mutator running, but + * with us holding the allocation lock. This is safe only if the + * mutator needs the allocation lock to reveal hidden pointers. + * FIXME: Why do we need the GC_mark_state test below? + */ +#define GC_MARK_FO(real_ptr, mark_proc) \ + do { \ + (*(mark_proc))(real_ptr); \ + while (!GC_mark_stack_empty()) MARK_FROM_MARK_STACK(); \ + if (GC_mark_state != MS_NONE) { \ + GC_set_mark_bit(real_ptr); \ + while (!GC_mark_some((ptr_t)0)) { /* empty */ } \ + } \ + } while (0) + +GC_EXTERN GC_bool GC_mark_stack_too_small; + /* We need a larger mark stack. May be */ + /* set by client supplied mark routines.*/ + +typedef int mark_state_t; /* Current state of marking, as follows:*/ + /* Used to remember where we are during */ + /* concurrent marking. */ + + /* We say something is dirty if it was */ + /* written since the last time we */ + /* retrieved dirty bits. We say it's */ + /* grungy if it was marked dirty in the */ + /* last set of bits we retrieved. */ + + /* Invariant "I": all roots and marked */ + /* objects p are either dirty, or point */ + /* to objects q that are either marked */ + /* or a pointer to q appears in a range */ + /* on the mark stack. */ + +#define MS_NONE 0 /* No marking in progress. "I" holds. */ + /* Mark stack is empty. */ + +#define MS_PUSH_RESCUERS 1 /* Rescuing objects are currently */ + /* being pushed. "I" holds, except */ + /* that grungy roots may point to */ + /* unmarked objects, as may marked */ + /* grungy objects above scan_ptr. */ + +#define MS_PUSH_UNCOLLECTABLE 2 /* "I" holds, except that marked */ + /* uncollectible objects above scan_ptr */ + /* may point to unmarked objects. */ + /* Roots may point to unmarked objects */ + +#define MS_ROOTS_PUSHED 3 /* "I" holds, mark stack may be nonempty. */ + +#define MS_PARTIALLY_INVALID 4 /* "I" may not hold, e.g. because of */ + /* the mark stack overflow. However */ + /* marked heap objects below scan_ptr */ + /* point to marked or stacked objects. */ + +#define MS_INVALID 5 /* "I" may not hold. */ + +GC_EXTERN mark_state_t GC_mark_state; + +#endif /* GC_PMARK_H */ diff --git a/include/private/gc_priv.h b/include/private/gc_priv.h new file mode 100644 index 0000000..4b36565 --- /dev/null +++ b/include/private/gc_priv.h @@ -0,0 +1,2631 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved. + * Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P. + * + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_PRIVATE_H +#define GC_PRIVATE_H + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#ifndef GC_BUILD +# define GC_BUILD +#endif + +#if (defined(__linux__) || defined(__GLIBC__) || defined(__GNU__)) \ + && !defined(_GNU_SOURCE) + /* Can't test LINUX, since this must be defined before other includes. */ +# define _GNU_SOURCE 1 +#endif + +#if (defined(DGUX) && defined(GC_THREADS) || defined(DGUX386_THREADS) \ + || defined(GC_DGUX386_THREADS)) && !defined(_USING_POSIX4A_DRAFT10) +# define _USING_POSIX4A_DRAFT10 1 +#endif + +#if defined(__MINGW32__) && !defined(__MINGW_EXCPT_DEFINE_PSDK) \ + && defined(__i386__) && defined(GC_EXTERN) /* defined in gc.c */ + /* See the description in mark.c. */ +# define __MINGW_EXCPT_DEFINE_PSDK 1 +#endif + +# if defined(NO_DEBUGGING) && !defined(GC_ASSERTIONS) && !defined(NDEBUG) + /* To turn off assertion checking (in atomic_ops.h). */ +# define NDEBUG 1 +# endif + +#ifndef GC_H +# include "../gc.h" +#endif + +#include +#if !defined(sony_news) +# include +#endif + +#ifdef DGUX +# include +# include +# include +#endif /* DGUX */ + +#ifdef BSD_TIME +# include +# include +# include +#endif /* BSD_TIME */ + +#ifdef PARALLEL_MARK +# define AO_REQUIRE_CAS +# if !defined(__GNUC__) && !defined(AO_ASSUME_WINDOWS98) +# define AO_ASSUME_WINDOWS98 +# endif +#endif + +#ifndef GC_TINY_FL_H +# include "../gc_tiny_fl.h" +#endif + +#ifndef GC_MARK_H +# include "../gc_mark.h" +#endif + +typedef GC_word word; +typedef GC_signed_word signed_word; +typedef unsigned int unsigned32; + +typedef int GC_bool; +#define TRUE 1 +#define FALSE 0 + +typedef char * ptr_t; /* A generic pointer to which we can add */ + /* byte displacements and which can be used */ + /* for address comparisons. */ + +#ifndef SIZE_MAX +# include +#endif +#if defined(SIZE_MAX) && !defined(CPPCHECK) +# define GC_SIZE_MAX ((size_t)SIZE_MAX) + /* Extra cast to workaround some buggy SIZE_MAX definitions. */ +#else +# define GC_SIZE_MAX (~(size_t)0) +#endif + +/* Saturated addition of size_t values. Used to avoid value wrap */ +/* around on overflow. The arguments should have no side effects. */ +#define SIZET_SAT_ADD(a, b) \ + ((a) < GC_SIZE_MAX - (b) ? (a) + (b) : GC_SIZE_MAX) + +#ifndef GCCONFIG_H +# include "gcconfig.h" +#endif + +#if !defined(GC_ATOMIC_UNCOLLECTABLE) && defined(ATOMIC_UNCOLLECTABLE) + /* For compatibility with old-style naming. */ +# define GC_ATOMIC_UNCOLLECTABLE +#endif + +#ifndef GC_INNER + /* This tagging macro must be used at the start of every variable */ + /* definition which is declared with GC_EXTERN. Should be also used */ + /* for the GC-scope function definitions and prototypes. Must not be */ + /* used in gcconfig.h. Shouldn't be used for the debugging-only */ + /* functions. Currently, not used for the functions declared in or */ + /* called from the "dated" source files (pcr_interface.c and files */ + /* located in the "extra" folder). */ +# if defined(GC_DLL) && defined(__GNUC__) && !defined(MSWIN32) \ + && !defined(MSWINCE) && !defined(CYGWIN32) +# if (__GNUC__ >= 4) && !defined(GC_NO_VISIBILITY) + /* See the corresponding GC_API definition. */ +# define GC_INNER __attribute__((__visibility__("hidden"))) +# else + /* The attribute is unsupported. */ +# define GC_INNER /* empty */ +# endif +# else +# define GC_INNER /* empty */ +# endif + +# define GC_EXTERN extern GC_INNER + /* Used only for the GC-scope variables (prefixed with "GC_") */ + /* declared in the header files. Must not be used for thread-local */ + /* variables. Must not be used in gcconfig.h. Shouldn't be used for */ + /* the debugging-only or profiling-only variables. Currently, not */ + /* used for the variables accessed from the "dated" source files */ + /* (pcr_interface.c, specific.c/h, and in the "extra" folder). */ + /* The corresponding variable definition must start with GC_INNER. */ +#endif /* !GC_INNER */ + +#ifndef HEADERS_H +# include "gc_hdrs.h" +#endif + +#ifndef GC_ATTR_NO_SANITIZE_ADDR +# ifndef ADDRESS_SANITIZER +# define GC_ATTR_NO_SANITIZE_ADDR /* empty */ +# elif __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 8) +# define GC_ATTR_NO_SANITIZE_ADDR __attribute__((no_sanitize("address"))) +# else +# define GC_ATTR_NO_SANITIZE_ADDR __attribute__((no_sanitize_address)) +# endif +#endif /* !GC_ATTR_NO_SANITIZE_ADDR */ + +#ifndef GC_ATTR_NO_SANITIZE_MEMORY +# ifndef MEMORY_SANITIZER +# define GC_ATTR_NO_SANITIZE_MEMORY /* empty */ +# elif __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 8) +# define GC_ATTR_NO_SANITIZE_MEMORY __attribute__((no_sanitize("memory"))) +# else +# define GC_ATTR_NO_SANITIZE_MEMORY __attribute__((no_sanitize_memory)) +# endif +#endif /* !GC_ATTR_NO_SANITIZE_MEMORY */ + +#ifndef GC_ATTR_UNUSED +# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) +# define GC_ATTR_UNUSED __attribute__((__unused__)) +# else +# define GC_ATTR_UNUSED /* empty */ +# endif +#endif /* !GC_ATTR_UNUSED */ + +#if __GNUC__ >= 3 && !defined(LINT2) +# define EXPECT(expr, outcome) __builtin_expect(expr,outcome) + /* Equivalent to (expr), but predict that usually (expr)==outcome. */ +#else +# define EXPECT(expr, outcome) (expr) +#endif /* __GNUC__ */ + +#ifdef HAVE_CONFIG_H + /* The "inline" keyword is determined by Autoconf AC_C_INLINE. */ +# define GC_INLINE static inline +#elif defined(_MSC_VER) || defined(__INTEL_COMPILER) || defined(__DMC__) \ + || ((__GNUC__ >= 3) && defined(__STRICT_ANSI__)) \ + || defined(__WATCOMC__) +# define GC_INLINE static __inline +#elif (__GNUC__ >= 3) || defined(__sun) +# define GC_INLINE static inline +#else +# define GC_INLINE static +#endif + +#ifndef GC_ATTR_NOINLINE +# if __GNUC__ >= 4 +# define GC_ATTR_NOINLINE __attribute__((__noinline__)) +# elif _MSC_VER >= 1400 +# define GC_ATTR_NOINLINE __declspec(noinline) +# else +# define GC_ATTR_NOINLINE /* empty */ +# endif +#endif + +#ifndef GC_API_OSCALL + /* This is used to identify GC routines called by name from OS. */ +# if defined(__GNUC__) +# if (__GNUC__ >= 4) && !defined(GC_NO_VISIBILITY) + /* Same as GC_API if GC_DLL. */ +# define GC_API_OSCALL extern __attribute__((__visibility__("default"))) +# else + /* The attribute is unsupported. */ +# define GC_API_OSCALL extern +# endif +# else +# define GC_API_OSCALL GC_API +# endif +#endif + +#ifndef GC_API_PRIV +# define GC_API_PRIV GC_API +#endif + +#ifndef GC_LOCKS_H +# include "gc_locks.h" +#endif + +#define ONES ((word)(signed_word)(-1)) + +# ifdef STACK_GROWS_DOWN +# define COOLER_THAN > +# define HOTTER_THAN < +# define MAKE_COOLER(x,y) if ((word)((x) + (y)) > (word)(x)) {(x) += (y);} \ + else (x) = (ptr_t)ONES +# define MAKE_HOTTER(x,y) (x) -= (y) +# else +# define COOLER_THAN < +# define HOTTER_THAN > +# define MAKE_COOLER(x,y) if ((word)((x) - (y)) < (word)(x)) {(x) -= (y);} \ + else (x) = 0 +# define MAKE_HOTTER(x,y) (x) += (y) +# endif + +#if defined(AMIGA) && defined(__SASC) +# define GC_FAR __far +#else +# define GC_FAR +#endif + + +/*********************************/ +/* */ +/* Definitions for conservative */ +/* collector */ +/* */ +/*********************************/ + +/*********************************/ +/* */ +/* Easily changeable parameters */ +/* */ +/*********************************/ + +/* #define STUBBORN_ALLOC */ + /* Enable stubborn allocation, and thus a limited */ + /* form of incremental collection w/o dirty bits. */ + +/* #define ALL_INTERIOR_POINTERS */ + /* Forces all pointers into the interior of an */ + /* object to be considered valid. Also causes the */ + /* sizes of all objects to be inflated by at least */ + /* one byte. This should suffice to guarantee */ + /* that in the presence of a compiler that does */ + /* not perform garbage-collector-unsafe */ + /* optimizations, all portable, strictly ANSI */ + /* conforming C programs should be safely usable */ + /* with malloc replaced by GC_malloc and free */ + /* calls removed. There are several disadvantages: */ + /* 1. There are probably no interesting, portable, */ + /* strictly ANSI conforming C programs. */ + /* 2. This option makes it hard for the collector */ + /* to allocate space that is not "pointed to" */ + /* by integers, etc. Under SunOS 4.X with a */ + /* statically linked libc, we empirically */ + /* observed that it would be difficult to */ + /* allocate individual objects larger than 100K. */ + /* Even if only smaller objects are allocated, */ + /* more swap space is likely to be needed. */ + /* Fortunately, much of this will never be */ + /* touched. */ + /* If you can easily avoid using this option, do. */ + /* If not, try to keep individual objects small. */ + /* This is now really controlled at startup, */ + /* through GC_all_interior_pointers. */ + + +#ifndef GC_NO_FINALIZATION +# define GC_INVOKE_FINALIZERS() GC_notify_or_invoke_finalizers() + GC_INNER void GC_notify_or_invoke_finalizers(void); + /* If GC_finalize_on_demand is not set, invoke */ + /* eligible finalizers. Otherwise: */ + /* Call *GC_finalizer_notifier if there are */ + /* finalizers to be run, and we haven't called */ + /* this procedure yet this GC cycle. */ + + GC_INNER void GC_finalize(void); + /* Perform all indicated finalization actions */ + /* on unmarked objects. */ + /* Unreachable finalizable objects are enqueued */ + /* for processing by GC_invoke_finalizers. */ + /* Invoked with lock. */ + +# ifndef GC_TOGGLE_REFS_NOT_NEEDED + GC_INNER void GC_process_togglerefs(void); + /* Process the toggle-refs before GC starts. */ +# endif +# ifndef SMALL_CONFIG + GC_INNER void GC_print_finalization_stats(void); +# endif +#else +# define GC_INVOKE_FINALIZERS() (void)0 +#endif /* GC_NO_FINALIZATION */ + +#if !defined(DONT_ADD_BYTE_AT_END) +# ifdef LINT2 + /* Explicitly instruct the code analysis tool that */ + /* GC_all_interior_pointers is assumed to have only 0 or 1 value. */ +# define EXTRA_BYTES ((size_t)(GC_all_interior_pointers? 1 : 0)) +# else +# define EXTRA_BYTES (size_t)GC_all_interior_pointers +# endif +# define MAX_EXTRA_BYTES 1 +#else +# define EXTRA_BYTES 0 +# define MAX_EXTRA_BYTES 0 +#endif + + +# ifndef LARGE_CONFIG +# define MINHINCR 16 /* Minimum heap increment, in blocks of HBLKSIZE */ + /* Must be multiple of largest page size. */ +# define MAXHINCR 2048 /* Maximum heap increment, in blocks */ +# else +# define MINHINCR 64 +# define MAXHINCR 4096 +# endif + +# define BL_LIMIT GC_black_list_spacing + /* If we need a block of N bytes, and we have */ + /* a block of N + BL_LIMIT bytes available, */ + /* and N > BL_LIMIT, */ + /* but all possible positions in it are */ + /* blacklisted, we just use it anyway (and */ + /* print a warning, if warnings are enabled). */ + /* This risks subsequently leaking the block */ + /* due to a false reference. But not using */ + /* the block risks unreasonable immediate */ + /* heap growth. */ + +/*********************************/ +/* */ +/* Stack saving for debugging */ +/* */ +/*********************************/ + +#ifdef NEED_CALLINFO + struct callinfo { + word ci_pc; /* Caller, not callee, pc */ +# if NARGS > 0 + word ci_arg[NARGS]; /* bit-wise complement to avoid retention */ +# endif +# if (NFRAMES * (NARGS + 1)) % 2 == 1 + /* Likely alignment problem. */ + word ci_dummy; +# endif + }; +#endif + +#ifdef SAVE_CALL_CHAIN + /* Fill in the pc and argument information for up to NFRAMES of my */ + /* callers. Ignore my frame and my callers frame. */ + GC_INNER void GC_save_callers(struct callinfo info[NFRAMES]); + GC_INNER void GC_print_callers(struct callinfo info[NFRAMES]); +#endif + + +/*********************************/ +/* */ +/* OS interface routines */ +/* */ +/*********************************/ + +#ifdef BSD_TIME +# undef CLOCK_TYPE +# undef GET_TIME +# undef MS_TIME_DIFF +# define CLOCK_TYPE struct timeval +# define GET_TIME(x) \ + do { \ + struct rusage rusage; \ + getrusage(RUSAGE_SELF, &rusage); \ + x = rusage.ru_utime; \ + } while (0) +# define MS_TIME_DIFF(a,b) ((unsigned long)(a.tv_sec - b.tv_sec) * 1000 \ + + (unsigned long)(a.tv_usec - b.tv_usec) / 1000) +#elif defined(MSWIN32) || defined(MSWINCE) +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN 1 +# endif +# define NOSERVICE +# include +# include +# define CLOCK_TYPE DWORD +# define GET_TIME(x) (void)(x = GetTickCount()) +# define MS_TIME_DIFF(a,b) ((long)((a)-(b))) +#else /* !MSWIN32, !MSWINCE, !BSD_TIME */ +# include +# if defined(FREEBSD) && !defined(CLOCKS_PER_SEC) +# include +# define CLOCKS_PER_SEC CLK_TCK +# endif +# if !defined(CLOCKS_PER_SEC) +# define CLOCKS_PER_SEC 1000000 + /* This is technically a bug in the implementation. */ + /* ANSI requires that CLOCKS_PER_SEC be defined. But at least */ + /* under SunOS 4.1.1, it isn't. Also note that the combination of */ + /* ANSI C and POSIX is incredibly gross here. The type clock_t */ + /* is used by both clock() and times(). But on some machines */ + /* these use different notions of a clock tick, CLOCKS_PER_SEC */ + /* seems to apply only to clock. Hence we use it here. On many */ + /* machines, including SunOS, clock actually uses units of */ + /* microseconds (which are not really clock ticks). */ +# endif +# define CLOCK_TYPE clock_t +# define GET_TIME(x) (void)(x = clock()) +# define MS_TIME_DIFF(a,b) (CLOCKS_PER_SEC % 1000 == 0 ? \ + (unsigned long)((a) - (b)) / (unsigned long)(CLOCKS_PER_SEC / 1000) \ + : ((unsigned long)((a) - (b)) * 1000) / (unsigned long)CLOCKS_PER_SEC) + /* Avoid using double type since some targets (like ARM) might */ + /* require -lm option for double-to-long conversion. */ +#endif /* !BSD_TIME && !MSWIN32 */ + +/* We use bzero and bcopy internally. They may not be available. */ +# if defined(SPARC) && defined(SUNOS4) +# define BCOPY_EXISTS +# endif +# if defined(M68K) && defined(AMIGA) +# define BCOPY_EXISTS +# endif +# if defined(M68K) && defined(NEXT) +# define BCOPY_EXISTS +# endif +# if defined(VAX) +# define BCOPY_EXISTS +# endif +# if defined(AMIGA) +# include +# define BCOPY_EXISTS +# endif +# if defined(DARWIN) +# include +# define BCOPY_EXISTS +# endif +# if defined(MACOS) && defined(POWERPC) +# include +# define bcopy(x,y,n) BlockMoveData(x, y, n) +# define bzero(x,n) BlockZero(x, n) +# define BCOPY_EXISTS +# endif + +# if !defined(BCOPY_EXISTS) || defined(CPPCHECK) +# include +# define BCOPY(x,y,n) memcpy(y, x, (size_t)(n)) +# define BZERO(x,n) memset(x, 0, (size_t)(n)) +# else +# define BCOPY(x,y,n) bcopy((void *)(x),(void *)(y),(size_t)(n)) +# define BZERO(x,n) bzero((void *)(x),(size_t)(n)) +# endif + +/* + * Stop and restart mutator threads. + */ +# ifdef PCR +# include "th/PCR_ThCtl.h" +# define STOP_WORLD() \ + PCR_ThCtl_SetExclusiveMode(PCR_ThCtl_ExclusiveMode_stopNormal, \ + PCR_allSigsBlocked, \ + PCR_waitForever) +# define START_WORLD() \ + PCR_ThCtl_SetExclusiveMode(PCR_ThCtl_ExclusiveMode_null, \ + PCR_allSigsBlocked, \ + PCR_waitForever) +# else +# if defined(GC_WIN32_THREADS) || defined(GC_PTHREADS) + GC_INNER void GC_stop_world(void); + GC_INNER void GC_start_world(void); +# define STOP_WORLD() GC_stop_world() +# define START_WORLD() GC_start_world() +# else + /* Just do a sanity check: we are not inside GC_do_blocking(). */ +# define STOP_WORLD() GC_ASSERT(GC_blocked_sp == NULL) +# define START_WORLD() +# endif +# endif + +#ifdef THREADS + GC_EXTERN GC_on_thread_event_proc GC_on_thread_event; +#endif + +/* Abandon ship */ +# if defined(SMALL_CONFIG) || defined(PCR) +# define GC_on_abort(msg) (void)0 /* be silent on abort */ +# else + GC_API_PRIV GC_abort_func GC_on_abort; +# endif +# if defined(CPPCHECK) +# define ABORT(msg) { GC_on_abort(msg); abort(); } +# elif defined(PCR) +# define ABORT(s) PCR_Base_Panic(s) +# else +# if defined(MSWINCE) && !defined(DebugBreak) \ + && (!defined(UNDER_CE) || (defined(__MINGW32CE__) && !defined(ARM32))) + /* This simplifies linking for WinCE (and, probably, doesn't */ + /* hurt debugging much); use -DDebugBreak=DebugBreak to override */ + /* this behavior if really needed. This is also a workaround for */ + /* x86mingw32ce toolchain (if it is still declaring DebugBreak() */ + /* instead of defining it as a macro). */ +# define DebugBreak() _exit(-1) /* there is no abort() in WinCE */ +# endif +# if defined(MSWIN32) && (defined(NO_DEBUGGING) || defined(LINT2)) + /* A more user-friendly abort after showing fatal message. */ +# define ABORT(msg) (GC_on_abort(msg), _exit(-1)) + /* Exit on error without running "at-exit" callbacks. */ +# elif defined(MSWINCE) && defined(NO_DEBUGGING) +# define ABORT(msg) (GC_on_abort(msg), ExitProcess(-1)) +# elif defined(MSWIN32) || defined(MSWINCE) +# define ABORT(msg) { GC_on_abort(msg); DebugBreak(); } + /* Note that: on a WinCE box, this could be silently */ + /* ignored (i.e., the program is not aborted); */ + /* DebugBreak is a statement in some toolchains. */ +# else +# define ABORT(msg) (GC_on_abort(msg), abort()) +# endif /* !MSWIN32 */ +# endif /* !PCR */ + +/* For abort message with 1-3 arguments. C_msg and C_fmt should be */ +/* literals. C_msg should not contain format specifiers. Arguments */ +/* should match their format specifiers. */ +#define ABORT_ARG1(C_msg, C_fmt, arg1) \ + do { \ + GC_INFOLOG_PRINTF(C_msg /* + */ C_fmt, arg1); \ + ABORT(C_msg); \ + } while (0) +#define ABORT_ARG2(C_msg, C_fmt, arg1, arg2) \ + do { \ + GC_INFOLOG_PRINTF(C_msg /* + */ C_fmt, arg1, arg2); \ + ABORT(C_msg); \ + } while (0) +#define ABORT_ARG3(C_msg, C_fmt, arg1, arg2, arg3) \ + do { \ + GC_INFOLOG_PRINTF(C_msg /* + */ C_fmt, arg1, arg2, arg3); \ + ABORT(C_msg); \ + } while (0) + +/* Same as ABORT but does not have 'no-return' attribute. */ +/* ABORT on a dummy condition (which is always true). */ +#define ABORT_RET(msg) \ + if ((signed_word)GC_current_warn_proc == -1) {} else ABORT(msg) + +/* Exit abnormally, but without making a mess (e.g. out of memory) */ +# ifdef PCR +# define EXIT() PCR_Base_Exit(1,PCR_waitForever) +# else +# define EXIT() (GC_on_abort(NULL), exit(1 /* EXIT_FAILURE */)) +# endif + +/* Print warning message, e.g. almost out of memory. */ +/* The argument (if any) format specifier should be: */ +/* "%s", "%p" or "%"WARN_PRIdPTR. */ +#define WARN(msg, arg) (*GC_current_warn_proc)("GC Warning: " msg, \ + (word)(arg)) +GC_EXTERN GC_warn_proc GC_current_warn_proc; + +/* Print format type macro for decimal signed_word value passed WARN(). */ +/* This could be redefined for Win64 or LLP64, but typically should */ +/* not be done as the WARN format string is, possibly, processed on the */ +/* client side, so non-standard print type modifiers (like MS "I64d") */ +/* should be avoided here if possible. */ +#ifndef WARN_PRIdPTR + /* Assume sizeof(void *) == sizeof(long) (or a little-endian machine) */ +# define WARN_PRIdPTR "ld" +#endif + +/* A tagging macro (for a code static analyzer) to indicate that the */ +/* string obtained from an untrusted source (e.g., argv[], getenv) is */ +/* safe to use in a vulnerable operation (e.g., open, exec). */ +#define TRUSTED_STRING(s) (char*)COVERT_DATAFLOW(s) + +/* Get environment entry */ +#ifdef GC_READ_ENV_FILE + GC_INNER char * GC_envfile_getenv(const char *name); +# define GETENV(name) GC_envfile_getenv(name) +#elif defined(NO_GETENV) && !defined(CPPCHECK) +# define GETENV(name) NULL +#elif defined(EMPTY_GETENV_RESULTS) + /* Workaround for a reputed Wine bug. */ + GC_INLINE char * fixed_getenv(const char *name) + { + char *value = getenv(name); + return value != NULL && *value != '\0' ? value : NULL; + } +# define GETENV(name) fixed_getenv(name) +#else +# define GETENV(name) getenv(name) +#endif + +#if defined(DARWIN) +# include +# ifndef MAC_OS_X_VERSION_MAX_ALLOWED +# include + /* Include this header just to import the above macro. */ +# endif +# if defined(POWERPC) +# if CPP_WORDSZ == 32 +# define GC_THREAD_STATE_T ppc_thread_state_t +# else +# define GC_THREAD_STATE_T ppc_thread_state64_t +# define GC_MACH_THREAD_STATE PPC_THREAD_STATE64 +# define GC_MACH_THREAD_STATE_COUNT PPC_THREAD_STATE64_COUNT +# endif +# elif defined(I386) || defined(X86_64) +# if CPP_WORDSZ == 32 +# if defined(i386_THREAD_STATE_COUNT) && !defined(x86_THREAD_STATE32_COUNT) + /* Use old naming convention for 32-bit x86. */ +# define GC_THREAD_STATE_T i386_thread_state_t +# define GC_MACH_THREAD_STATE i386_THREAD_STATE +# define GC_MACH_THREAD_STATE_COUNT i386_THREAD_STATE_COUNT +# else +# define GC_THREAD_STATE_T x86_thread_state32_t +# define GC_MACH_THREAD_STATE x86_THREAD_STATE32 +# define GC_MACH_THREAD_STATE_COUNT x86_THREAD_STATE32_COUNT +# endif +# else +# define GC_THREAD_STATE_T x86_thread_state64_t +# define GC_MACH_THREAD_STATE x86_THREAD_STATE64 +# define GC_MACH_THREAD_STATE_COUNT x86_THREAD_STATE64_COUNT +# endif +# elif defined(ARM32) && defined(ARM_UNIFIED_THREAD_STATE) \ + && !defined(CPPCHECK) +# define GC_THREAD_STATE_T arm_unified_thread_state_t +# define GC_MACH_THREAD_STATE ARM_UNIFIED_THREAD_STATE +# define GC_MACH_THREAD_STATE_COUNT ARM_UNIFIED_THREAD_STATE_COUNT +# elif defined(ARM32) +# define GC_THREAD_STATE_T arm_thread_state_t +# ifdef ARM_MACHINE_THREAD_STATE_COUNT +# define GC_MACH_THREAD_STATE ARM_MACHINE_THREAD_STATE +# define GC_MACH_THREAD_STATE_COUNT ARM_MACHINE_THREAD_STATE_COUNT +# endif +# elif defined(AARCH64) +# define GC_THREAD_STATE_T arm_thread_state64_t +# define GC_MACH_THREAD_STATE ARM_THREAD_STATE64 +# define GC_MACH_THREAD_STATE_COUNT ARM_THREAD_STATE64_COUNT +# elif !defined(CPPCHECK) +# error define GC_THREAD_STATE_T +# endif +# ifndef GC_MACH_THREAD_STATE +# define GC_MACH_THREAD_STATE MACHINE_THREAD_STATE +# define GC_MACH_THREAD_STATE_COUNT MACHINE_THREAD_STATE_COUNT +# endif + +# if CPP_WORDSZ == 32 +# define GC_MACH_HEADER mach_header +# define GC_MACH_SECTION section +# define GC_GETSECTBYNAME getsectbynamefromheader +# else +# define GC_MACH_HEADER mach_header_64 +# define GC_MACH_SECTION section_64 +# define GC_GETSECTBYNAME getsectbynamefromheader_64 +# endif + + /* Try to work out the right way to access thread state structure */ + /* members. The structure has changed its definition in different */ + /* Darwin versions. This now defaults to the (older) names */ + /* without __, thus hopefully, not breaking any existing */ + /* Makefile.direct builds. */ +# if __DARWIN_UNIX03 +# define THREAD_FLD_NAME(x) __ ## x +# else +# define THREAD_FLD_NAME(x) x +# endif +# if defined(ARM32) && defined(ARM_UNIFIED_THREAD_STATE) +# define THREAD_FLD(x) ts_32.THREAD_FLD_NAME(x) +# else +# define THREAD_FLD(x) THREAD_FLD_NAME(x) +# endif +#endif /* DARWIN */ + +/*********************************/ +/* */ +/* Word-size-dependent defines */ +/* */ +/*********************************/ + +#if CPP_WORDSZ == 32 +# define WORDS_TO_BYTES(x) ((x)<<2) +# define BYTES_TO_WORDS(x) ((x)>>2) +# define LOGWL ((word)5) /* log[2] of CPP_WORDSZ */ +# define modWORDSZ(n) ((n) & 0x1f) /* n mod size of word */ +# if ALIGNMENT != 4 +# define UNALIGNED_PTRS +# endif +#endif + +#if CPP_WORDSZ == 64 +# define WORDS_TO_BYTES(x) ((x)<<3) +# define BYTES_TO_WORDS(x) ((x)>>3) +# define LOGWL ((word)6) /* log[2] of CPP_WORDSZ */ +# define modWORDSZ(n) ((n) & 0x3f) /* n mod size of word */ +# if ALIGNMENT != 8 +# define UNALIGNED_PTRS +# endif +#endif + +/* The first TINY_FREELISTS free lists correspond to the first */ +/* TINY_FREELISTS multiples of GRANULE_BYTES, i.e. we keep */ +/* separate free lists for each multiple of GRANULE_BYTES */ +/* up to (TINY_FREELISTS-1) * GRANULE_BYTES. After that they */ +/* may be spread out further. */ +#include "../gc_tiny_fl.h" +#define GRANULE_BYTES GC_GRANULE_BYTES +#define TINY_FREELISTS GC_TINY_FREELISTS + +#define WORDSZ ((word)CPP_WORDSZ) +#define SIGNB ((word)1 << (WORDSZ-1)) +#define BYTES_PER_WORD ((word)(sizeof (word))) +#define divWORDSZ(n) ((n) >> LOGWL) /* divide n by size of word */ + +#if GRANULE_BYTES == 8 +# define BYTES_TO_GRANULES(n) ((n)>>3) +# define GRANULES_TO_BYTES(n) ((n)<<3) +# if CPP_WORDSZ == 64 +# define GRANULES_TO_WORDS(n) (n) +# elif CPP_WORDSZ == 32 +# define GRANULES_TO_WORDS(n) ((n)<<1) +# else +# define GRANULES_TO_WORDS(n) BYTES_TO_WORDS(GRANULES_TO_BYTES(n)) +# endif +#elif GRANULE_BYTES == 16 +# define BYTES_TO_GRANULES(n) ((n)>>4) +# define GRANULES_TO_BYTES(n) ((n)<<4) +# if CPP_WORDSZ == 64 +# define GRANULES_TO_WORDS(n) ((n)<<1) +# elif CPP_WORDSZ == 32 +# define GRANULES_TO_WORDS(n) ((n)<<2) +# else +# define GRANULES_TO_WORDS(n) BYTES_TO_WORDS(GRANULES_TO_BYTES(n)) +# endif +#else +# error Bad GRANULE_BYTES value +#endif + +/*********************/ +/* */ +/* Size Parameters */ +/* */ +/*********************/ + +/* Heap block size, bytes. Should be power of 2. */ +/* Incremental GC with MPROTECT_VDB currently requires the */ +/* page size to be a multiple of HBLKSIZE. Since most modern */ +/* architectures support variable page sizes down to 4K, and */ +/* X86 is generally 4K, we now default to 4K, except for */ +/* Alpha: Seems to be used with 8K pages. */ +/* SMALL_CONFIG: Want less block-level fragmentation. */ +#ifndef HBLKSIZE +# if defined(LARGE_CONFIG) || !defined(SMALL_CONFIG) +# ifdef ALPHA +# define CPP_LOG_HBLKSIZE 13 +# else +# define CPP_LOG_HBLKSIZE 12 +# endif +# else +# define CPP_LOG_HBLKSIZE 10 +# endif +#else +# if HBLKSIZE == 512 +# define CPP_LOG_HBLKSIZE 9 +# elif HBLKSIZE == 1024 +# define CPP_LOG_HBLKSIZE 10 +# elif HBLKSIZE == 2048 +# define CPP_LOG_HBLKSIZE 11 +# elif HBLKSIZE == 4096 +# define CPP_LOG_HBLKSIZE 12 +# elif HBLKSIZE == 8192 +# define CPP_LOG_HBLKSIZE 13 +# elif HBLKSIZE == 16384 +# define CPP_LOG_HBLKSIZE 14 +# else +# error fix HBLKSIZE +# endif +# undef HBLKSIZE +#endif + +# define CPP_HBLKSIZE (1 << CPP_LOG_HBLKSIZE) +# define LOG_HBLKSIZE ((size_t)CPP_LOG_HBLKSIZE) +# define HBLKSIZE ((size_t)CPP_HBLKSIZE) + +#define GC_SQRT_SIZE_MAX ((((size_t)1) << (WORDSZ / 2)) - 1) + +/* Max size objects supported by freelist (larger objects are */ +/* allocated directly with allchblk(), by rounding to the next */ +/* multiple of HBLKSIZE). */ +#define CPP_MAXOBJBYTES (CPP_HBLKSIZE/2) +#define MAXOBJBYTES ((size_t)CPP_MAXOBJBYTES) +#define CPP_MAXOBJWORDS BYTES_TO_WORDS(CPP_MAXOBJBYTES) +#define MAXOBJWORDS ((size_t)CPP_MAXOBJWORDS) +#define CPP_MAXOBJGRANULES BYTES_TO_GRANULES(CPP_MAXOBJBYTES) +#define MAXOBJGRANULES ((size_t)CPP_MAXOBJGRANULES) + +# define divHBLKSZ(n) ((n) >> LOG_HBLKSIZE) + +# define HBLK_PTR_DIFF(p,q) divHBLKSZ((ptr_t)p - (ptr_t)q) + /* Equivalent to subtracting 2 hblk pointers. */ + /* We do it this way because a compiler should */ + /* find it hard to use an integer division */ + /* instead of a shift. The bundled SunOS 4.1 */ + /* o.w. sometimes pessimizes the subtraction to */ + /* involve a call to .div. */ + +# define modHBLKSZ(n) ((n) & (HBLKSIZE-1)) + +# define HBLKPTR(objptr) ((struct hblk *)(((word)(objptr)) \ + & ~(word)(HBLKSIZE-1))) +# define HBLKDISPL(objptr) (((size_t) (objptr)) & (HBLKSIZE-1)) + +/* Round up allocation size (in bytes) to a multiple of a granule. */ +#define ROUNDUP_GRANULE_SIZE(lb) /* lb should have no side-effect */ \ + (SIZET_SAT_ADD(lb, GRANULE_BYTES - 1) & ~(GRANULE_BYTES - 1)) + +/* Round up byte allocation requests to integral number of words, etc. */ +# define ROUNDED_UP_GRANULES(lb) /* lb should have no side-effect */ \ + BYTES_TO_GRANULES(SIZET_SAT_ADD(lb, GRANULE_BYTES - 1 + EXTRA_BYTES)) +# if MAX_EXTRA_BYTES == 0 +# define SMALL_OBJ(bytes) EXPECT((bytes) <= (MAXOBJBYTES), TRUE) +# else +# define SMALL_OBJ(bytes) \ + (EXPECT((bytes) <= (MAXOBJBYTES - MAX_EXTRA_BYTES), TRUE) \ + || (bytes) <= MAXOBJBYTES - EXTRA_BYTES) + /* This really just tests bytes <= MAXOBJBYTES - EXTRA_BYTES. */ + /* But we try to avoid looking up EXTRA_BYTES. */ +# endif +# define ADD_SLOP(lb) /* lb should have no side-effect */ \ + SIZET_SAT_ADD(lb, EXTRA_BYTES) +# ifndef MIN_WORDS +# define MIN_WORDS 2 /* FIXME: obsolete */ +# endif + +/* + * Hash table representation of sets of pages. + * Implements a map from aligned HBLKSIZE chunks of the address space to one + * bit each. + * This assumes it is OK to spuriously set bits, e.g. because multiple + * addresses are represented by a single location. + * Used by black-listing code, and perhaps by dirty bit maintenance code. + */ + +# ifdef LARGE_CONFIG +# if CPP_WORDSZ == 32 +# define LOG_PHT_ENTRIES 20 /* Collisions likely at 1M blocks, */ + /* which is >= 4GB. Each table takes */ + /* 128KB, some of which may never be */ + /* touched. */ +# else +# define LOG_PHT_ENTRIES 21 /* Collisions likely at 2M blocks, */ + /* which is >= 8GB. Each table takes */ + /* 256KB, some of which may never be */ + /* touched. */ +# endif +# elif !defined(SMALL_CONFIG) +# define LOG_PHT_ENTRIES 18 /* Collisions are likely if heap grows */ + /* to more than 256K hblks >= 1GB. */ + /* Each hash table occupies 32K bytes. */ + /* Even for somewhat smaller heaps, */ + /* say half that, collisions may be an */ + /* issue because we blacklist */ + /* addresses outside the heap. */ +# else +# define LOG_PHT_ENTRIES 15 /* Collisions are likely if heap grows */ + /* to more than 32K hblks = 128MB. */ + /* Each hash table occupies 4K bytes. */ +# endif +# define PHT_ENTRIES ((word)1 << LOG_PHT_ENTRIES) +# define PHT_SIZE (PHT_ENTRIES >> LOGWL) +typedef word page_hash_table[PHT_SIZE]; + +# define PHT_HASH(addr) ((((word)(addr)) >> LOG_HBLKSIZE) & (PHT_ENTRIES - 1)) + +# define get_pht_entry_from_index(bl, index) \ + (((bl)[divWORDSZ(index)] >> modWORDSZ(index)) & 1) +# define set_pht_entry_from_index(bl, index) \ + (bl)[divWORDSZ(index)] |= (word)1 << modWORDSZ(index) +# define clear_pht_entry_from_index(bl, index) \ + (bl)[divWORDSZ(index)] &= ~((word)1 << modWORDSZ(index)) +/* And a dumb but thread-safe version of set_pht_entry_from_index. */ +/* This sets (many) extra bits. */ +# define set_pht_entry_from_index_safe(bl, index) \ + (bl)[divWORDSZ(index)] = ONES + + +/********************************************/ +/* */ +/* H e a p B l o c k s */ +/* */ +/********************************************/ + +/* heap block header */ +#define HBLKMASK (HBLKSIZE-1) + +#define MARK_BITS_PER_HBLK (HBLKSIZE/GRANULE_BYTES) + /* upper bound */ + /* We allocate 1 bit per allocation granule. */ + /* If MARK_BIT_PER_GRANULE is defined, we use */ + /* every nth bit, where n is the number of */ + /* allocation granules per object. If */ + /* MARK_BIT_PER_OBJ is defined, we only use the */ + /* initial group of mark bits, and it is safe */ + /* to allocate smaller header for large objects. */ + +#ifdef PARALLEL_MARK +# include "atomic_ops.h" +# define counter_t volatile AO_t +#else + typedef size_t counter_t; +# if defined(THREADS) && (defined(MPROTECT_VDB) \ + || (defined(GC_ASSERTIONS) && defined(THREAD_LOCAL_ALLOC))) +# include "atomic_ops.h" +# endif +#endif /* !PARALLEL_MARK */ + +union word_ptr_ao_u { + word w; + signed_word sw; + void *vp; +# ifdef AO_HAVE_load + volatile AO_t ao; +# endif +}; + +/* We maintain layout maps for heap blocks containing objects of a given */ +/* size. Each entry in this map describes a byte offset and has the */ +/* following type. */ +struct hblkhdr { + struct hblk * hb_next; /* Link field for hblk free list */ + /* and for lists of chunks waiting to be */ + /* reclaimed. */ + struct hblk * hb_prev; /* Backwards link for free list. */ + struct hblk * hb_block; /* The corresponding block. */ + unsigned char hb_obj_kind; + /* Kind of objects in the block. Each kind */ + /* identifies a mark procedure and a set of */ + /* list headers. Sometimes called regions. */ + unsigned char hb_flags; +# define IGNORE_OFF_PAGE 1 /* Ignore pointers that do not */ + /* point to the first page of */ + /* this object. */ +# define WAS_UNMAPPED 2 /* This is a free block, which has */ + /* been unmapped from the address */ + /* space. */ + /* GC_remap must be invoked on it */ + /* before it can be reallocated. */ + /* Only set with USE_MUNMAP. */ +# define FREE_BLK 4 /* Block is free, i.e. not in use. */ +# ifdef ENABLE_DISCLAIM +# define HAS_DISCLAIM 8 + /* This kind has a callback on reclaim. */ +# define MARK_UNCONDITIONALLY 0x10 + /* Mark from all objects, marked or */ + /* not. Used to mark objects needed by */ + /* reclaim notifier. */ +# endif +# ifdef MARK_BIT_PER_GRANULE +# define LARGE_BLOCK 0x20 +# endif + unsigned short hb_last_reclaimed; + /* Value of GC_gc_no when block was */ + /* last allocated or swept. May wrap. */ + /* For a free block, this is maintained */ + /* only for USE_MUNMAP, and indicates */ + /* when the header was allocated, or */ + /* when the size of the block last */ + /* changed. */ +# ifdef MARK_BIT_PER_OBJ + unsigned32 hb_inv_sz; /* A good upper bound for 2**32/hb_sz. */ + /* For large objects, we use */ + /* LARGE_INV_SZ. */ +# define LARGE_INV_SZ (1 << 16) +# endif + size_t hb_sz; /* If in use, size in bytes, of objects in the block. */ + /* if free, the size in bytes of the whole block */ + /* We assume that this is convertible to signed_word */ + /* without generating a negative result. We avoid */ + /* generating free blocks larger than that. */ + word hb_descr; /* object descriptor for marking. See */ + /* gc_mark.h. */ +# ifdef MARK_BIT_PER_GRANULE + unsigned short * hb_map; /* Essentially a table of remainders */ + /* mod BYTES_TO_GRANULES(hb_sz), except */ + /* for large blocks. See GC_obj_map. */ +# endif + counter_t hb_n_marks; /* Number of set mark bits, excluding */ + /* the one always set at the end. */ + /* Currently it is concurrently */ + /* updated and hence only approximate. */ + /* But a zero value does guarantee that */ + /* the block contains no marked */ + /* objects. */ + /* Ensuring this property means that we */ + /* never decrement it to zero during a */ + /* collection, and hence the count may */ + /* be one too high. Due to concurrent */ + /* updates, an arbitrary number of */ + /* increments, but not all of them (!) */ + /* may be lost, hence it may in theory */ + /* be much too low. */ + /* The count may also be too high if */ + /* multiple mark threads mark the */ + /* same object due to a race. */ + /* Without parallel marking, the count */ + /* is accurate. */ +# ifdef USE_MARK_BYTES +# define MARK_BITS_SZ (MARK_BITS_PER_HBLK + 1) + /* Unlike the other case, this is in units of bytes. */ + /* Since we force double-word alignment, we need at most one */ + /* mark bit per 2 words. But we do allocate and set one */ + /* extra mark bit to avoid an explicit check for the */ + /* partial object at the end of each block. */ + union { + char _hb_marks[MARK_BITS_SZ]; + /* The i'th byte is 1 if the object */ + /* starting at granule i or object i is */ + /* marked, 0 o.w. */ + /* The mark bit for the "one past the */ + /* end" object is always set to avoid a */ + /* special case test in the marker. */ + word dummy; /* Force word alignment of mark bytes. */ + } _mark_byte_union; +# define hb_marks _mark_byte_union._hb_marks +# else +# define MARK_BITS_SZ (MARK_BITS_PER_HBLK/CPP_WORDSZ + 1) + word hb_marks[MARK_BITS_SZ]; +# endif /* !USE_MARK_BYTES */ +}; + +# define ANY_INDEX 23 /* "Random" mark bit index for assertions */ + +/* heap block body */ + +# define HBLK_WORDS (HBLKSIZE/sizeof(word)) +# define HBLK_GRANULES (HBLKSIZE/GRANULE_BYTES) + +/* The number of objects in a block dedicated to a certain size. */ +/* may erroneously yield zero (instead of one) for large objects. */ +# define HBLK_OBJS(sz_in_bytes) (HBLKSIZE/(sz_in_bytes)) + +struct hblk { + char hb_body[HBLKSIZE]; +}; + +# define HBLK_IS_FREE(hdr) (((hdr) -> hb_flags & FREE_BLK) != 0) + +# define OBJ_SZ_TO_BLOCKS(lb) divHBLKSZ((lb) + HBLKSIZE-1) +# define OBJ_SZ_TO_BLOCKS_CHECKED(lb) /* lb should have no side-effect */ \ + divHBLKSZ(SIZET_SAT_ADD(lb, HBLKSIZE - 1)) + /* Size of block (in units of HBLKSIZE) needed to hold objects of */ + /* given lb (in bytes). The checked variant prevents wrap around. */ + +/* Object free list link */ +# define obj_link(p) (*(void **)(p)) + +# define LOG_MAX_MARK_PROCS 6 +# define MAX_MARK_PROCS (1 << LOG_MAX_MARK_PROCS) + +/* Root sets. Logically private to mark_rts.c. But we don't want the */ +/* tables scanned, so we put them here. */ +/* MAX_ROOT_SETS is the maximum number of ranges that can be */ +/* registered as static roots. */ +# ifdef LARGE_CONFIG +# define MAX_ROOT_SETS 8192 +# elif !defined(SMALL_CONFIG) +# define MAX_ROOT_SETS 2048 +# else +# define MAX_ROOT_SETS 512 +# endif + +# define MAX_EXCLUSIONS (MAX_ROOT_SETS/4) +/* Maximum number of segments that can be excluded from root sets. */ + +/* + * Data structure for excluded static roots. + */ +struct exclusion { + ptr_t e_start; + ptr_t e_end; +}; + +/* Data structure for list of root sets. */ +/* We keep a hash table, so that we can filter out duplicate additions. */ +/* Under Win32, we need to do a better job of filtering overlaps, so */ +/* we resort to sequential search, and pay the price. */ +struct roots { + ptr_t r_start;/* multiple of word size */ + ptr_t r_end; /* multiple of word size and greater than r_start */ +# if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) + struct roots * r_next; +# endif + GC_bool r_tmp; + /* Delete before registering new dynamic libraries */ +}; + +#if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) + /* Size of hash table index to roots. */ +# define LOG_RT_SIZE 6 +# define RT_SIZE (1 << LOG_RT_SIZE) /* Power of 2, may be != MAX_ROOT_SETS */ +#endif + +#ifndef MAX_HEAP_SECTS +# ifdef LARGE_CONFIG +# if CPP_WORDSZ > 32 +# define MAX_HEAP_SECTS 8192 /* overflows at roughly 128 GB */ +# else +# define MAX_HEAP_SECTS 768 /* Separately added heap sections. */ +# endif +# elif defined(SMALL_CONFIG) && !defined(USE_PROC_FOR_LIBRARIES) +# if defined(PARALLEL_MARK) && (defined(MSWIN32) || defined(CYGWIN32)) +# define MAX_HEAP_SECTS 384 +# else +# define MAX_HEAP_SECTS 128 /* Roughly 256MB (128*2048*1K) */ +# endif +# elif CPP_WORDSZ > 32 +# define MAX_HEAP_SECTS 1024 /* Roughly 8GB */ +# else +# define MAX_HEAP_SECTS 512 /* Roughly 4GB */ +# endif +#endif /* !MAX_HEAP_SECTS */ + +typedef struct GC_ms_entry { + ptr_t mse_start; /* First word of object, word aligned. */ + union word_ptr_ao_u mse_descr; + /* Descriptor; low order two bits are tags, */ + /* as described in gc_mark.h. */ +} mse; + +/* Lists of all heap blocks and free lists */ +/* as well as other random data structures */ +/* that should not be scanned by the */ +/* collector. */ +/* These are grouped together in a struct */ +/* so that they can be easily skipped by the */ +/* GC_mark routine. */ +/* The ordering is weird to make GC_malloc */ +/* faster by keeping the important fields */ +/* sufficiently close together that a */ +/* single load of a base register will do. */ +/* Scalars that could easily appear to */ +/* be pointers are also put here. */ +/* The main fields should precede any */ +/* conditionally included fields, so that */ +/* gc_inl.h will work even if a different set */ +/* of macros is defined when the client is */ +/* compiled. */ + +struct _GC_arrays { + word _heapsize; /* Heap size in bytes (value never goes down). */ + word _requested_heapsize; /* Heap size due to explicit expansion. */ + ptr_t _last_heap_addr; + ptr_t _prev_heap_addr; + word _large_free_bytes; + /* Total bytes contained in blocks on large object free */ + /* list. */ + word _large_allocd_bytes; + /* Total number of bytes in allocated large objects blocks. */ + /* For the purposes of this counter and the next one only, a */ + /* large object is one that occupies a block of at least */ + /* 2*HBLKSIZE. */ + word _max_large_allocd_bytes; + /* Maximum number of bytes that were ever allocated in */ + /* large object blocks. This is used to help decide when it */ + /* is safe to split up a large block. */ + word _bytes_allocd_before_gc; + /* Number of bytes allocated before this */ + /* collection cycle. */ +# ifndef SEPARATE_GLOBALS +# define GC_bytes_allocd GC_arrays._bytes_allocd + word _bytes_allocd; + /* Number of bytes allocated during this collection cycle. */ +# endif + word _bytes_dropped; + /* Number of black-listed bytes dropped during GC cycle */ + /* as a result of repeated scanning during allocation */ + /* attempts. These are treated largely as allocated, */ + /* even though they are not useful to the client. */ + word _bytes_finalized; + /* Approximate number of bytes in objects (and headers) */ + /* that became ready for finalization in the last */ + /* collection. */ + word _bytes_freed; + /* Number of explicitly deallocated bytes of memory */ + /* since last collection. */ + word _finalizer_bytes_freed; + /* Bytes of memory explicitly deallocated while */ + /* finalizers were running. Used to approximate mem. */ + /* explicitly deallocated by finalizers. */ + ptr_t _scratch_end_ptr; + ptr_t _scratch_last_end_ptr; + /* Used by headers.c, and can easily appear to point to */ + /* heap. Also used by GC_register_dynamic_libraries(). */ + mse *_mark_stack; + /* Limits of stack for GC_mark routine. All ranges */ + /* between GC_mark_stack (incl.) and GC_mark_stack_top */ + /* (incl.) still need to be marked from. */ + mse *_mark_stack_limit; +# ifdef PARALLEL_MARK + mse *volatile _mark_stack_top; + /* Updated only with mark lock held, but read asynchronously. */ + /* TODO: Use union to avoid casts to AO_t */ +# else + mse *_mark_stack_top; +# endif + word _composite_in_use; /* Number of bytes in the accessible */ + /* composite objects. */ + word _atomic_in_use; /* Number of bytes in the accessible */ + /* atomic objects. */ +# ifdef USE_MUNMAP +# define GC_unmapped_bytes GC_arrays._unmapped_bytes + word _unmapped_bytes; +# else +# define GC_unmapped_bytes 0 +# endif + bottom_index * _all_nils; +# ifdef ENABLE_TRACE +# define GC_trace_addr GC_arrays._trace_addr + ptr_t _trace_addr; +# endif + GC_mark_proc _mark_procs[MAX_MARK_PROCS]; + /* Table of user-defined mark procedures. There is */ + /* a small number of these, which can be referenced */ + /* by DS_PROC mark descriptors. See gc_mark.h. */ + char _modws_valid_offsets[sizeof(word)]; + /* GC_valid_offsets[i] ==> */ + /* GC_modws_valid_offsets[i%sizeof(word)] */ +# if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) +# define GC_root_index GC_arrays._root_index + struct roots * _root_index[RT_SIZE]; +# endif +# ifdef SAVE_CALL_CHAIN +# define GC_last_stack GC_arrays._last_stack + struct callinfo _last_stack[NFRAMES]; + /* Stack at last garbage collection. Useful for */ + /* debugging mysterious object disappearances. In the */ + /* multi-threaded case, we currently only save the */ + /* calling stack. */ +# endif +# ifndef SEPARATE_GLOBALS +# define GC_objfreelist GC_arrays._objfreelist + void *_objfreelist[MAXOBJGRANULES+1]; + /* free list for objects */ +# define GC_aobjfreelist GC_arrays._aobjfreelist + void *_aobjfreelist[MAXOBJGRANULES+1]; + /* free list for atomic objects */ +# endif + void *_uobjfreelist[MAXOBJGRANULES+1]; + /* Uncollectible but traced objects. */ + /* Objects on this and _auobjfreelist */ + /* are always marked, except during */ + /* garbage collections. */ +# ifdef GC_ATOMIC_UNCOLLECTABLE +# define GC_auobjfreelist GC_arrays._auobjfreelist + void *_auobjfreelist[MAXOBJGRANULES+1]; + /* Atomic uncollectible but traced objects. */ +# endif + size_t _size_map[MAXOBJBYTES+1]; + /* Number of granules to allocate when asked for a certain */ + /* number of bytes. */ +# ifdef STUBBORN_ALLOC +# define GC_sobjfreelist GC_arrays._sobjfreelist + ptr_t _sobjfreelist[MAXOBJGRANULES+1]; + /* Free list for immutable objects. */ +# endif +# ifdef MARK_BIT_PER_GRANULE +# define GC_obj_map GC_arrays._obj_map + unsigned short * _obj_map[MAXOBJGRANULES + 1]; + /* If not NULL, then a pointer to a map of valid */ + /* object addresses. */ + /* _obj_map[sz_in_granules][i] is */ + /* i % sz_in_granules. */ + /* This is now used purely to replace a */ + /* division in the marker by a table lookup. */ + /* _obj_map[0] is used for large objects and */ + /* contains all nonzero entries. This gets us */ + /* out of the marker fast path without an extra */ + /* test. */ +# define MAP_LEN BYTES_TO_GRANULES(HBLKSIZE) +# endif +# define VALID_OFFSET_SZ HBLKSIZE + char _valid_offsets[VALID_OFFSET_SZ]; + /* GC_valid_offsets[i] == TRUE ==> i */ + /* is registered as a displacement. */ +# ifdef STUBBORN_ALLOC +# define GC_changed_pages GC_arrays._changed_pages + page_hash_table _changed_pages; + /* Stubborn object pages that were changes since last call to */ + /* GC_read_changed. */ +# define GC_prev_changed_pages GC_arrays._prev_changed_pages + page_hash_table _prev_changed_pages; + /* Stubborn object pages that were changes before last call to */ + /* GC_read_changed. */ +# endif +# if defined(PROC_VDB) || defined(MPROTECT_VDB) \ + || defined(GWW_VDB) || defined(MANUAL_VDB) +# define GC_grungy_pages GC_arrays._grungy_pages + page_hash_table _grungy_pages; /* Pages that were dirty at last */ + /* GC_read_dirty. */ +# endif +# if defined(MPROTECT_VDB) || defined(MANUAL_VDB) +# define GC_dirty_pages GC_arrays._dirty_pages + volatile page_hash_table _dirty_pages; + /* Pages dirtied since last GC_read_dirty. */ +# endif +# if (defined(CHECKSUMS) && defined(GWW_VDB)) || defined(PROC_VDB) +# define GC_written_pages GC_arrays._written_pages + page_hash_table _written_pages; /* Pages ever dirtied */ +# endif +# define GC_heap_sects GC_arrays._heap_sects + struct HeapSect { + ptr_t hs_start; + size_t hs_bytes; + } _heap_sects[MAX_HEAP_SECTS]; /* Heap segments potentially */ + /* client objects. */ +# if defined(USE_PROC_FOR_LIBRARIES) +# define GC_our_memory GC_arrays._our_memory + struct HeapSect _our_memory[MAX_HEAP_SECTS]; + /* All GET_MEM allocated */ + /* memory. Includes block */ + /* headers and the like. */ +# endif +# if defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32) +# define GC_heap_bases GC_arrays._heap_bases + ptr_t _heap_bases[MAX_HEAP_SECTS]; + /* Start address of memory regions obtained from kernel. */ +# endif +# ifdef MSWINCE +# define GC_heap_lengths GC_arrays._heap_lengths + word _heap_lengths[MAX_HEAP_SECTS]; + /* Committed lengths of memory regions obtained from kernel. */ +# endif + struct roots _static_roots[MAX_ROOT_SETS]; + struct exclusion _excl_table[MAX_EXCLUSIONS]; + /* Block header index; see gc_headers.h */ + bottom_index * _top_index[TOP_SZ]; +}; + +GC_API_PRIV GC_FAR struct _GC_arrays GC_arrays; + +#define GC_all_nils GC_arrays._all_nils +#define GC_atomic_in_use GC_arrays._atomic_in_use +#define GC_bytes_allocd_before_gc GC_arrays._bytes_allocd_before_gc +#define GC_bytes_dropped GC_arrays._bytes_dropped +#define GC_bytes_finalized GC_arrays._bytes_finalized +#define GC_bytes_freed GC_arrays._bytes_freed +#define GC_composite_in_use GC_arrays._composite_in_use +#define GC_excl_table GC_arrays._excl_table +#define GC_finalizer_bytes_freed GC_arrays._finalizer_bytes_freed +#define GC_heapsize GC_arrays._heapsize +#define GC_large_allocd_bytes GC_arrays._large_allocd_bytes +#define GC_large_free_bytes GC_arrays._large_free_bytes +#define GC_last_heap_addr GC_arrays._last_heap_addr +#define GC_mark_stack GC_arrays._mark_stack +#define GC_mark_stack_limit GC_arrays._mark_stack_limit +#define GC_mark_stack_top GC_arrays._mark_stack_top +#define GC_mark_procs GC_arrays._mark_procs +#define GC_max_large_allocd_bytes GC_arrays._max_large_allocd_bytes +#define GC_modws_valid_offsets GC_arrays._modws_valid_offsets +#define GC_prev_heap_addr GC_arrays._prev_heap_addr +#define GC_requested_heapsize GC_arrays._requested_heapsize +#define GC_scratch_end_ptr GC_arrays._scratch_end_ptr +#define GC_scratch_last_end_ptr GC_arrays._scratch_last_end_ptr +#define GC_size_map GC_arrays._size_map +#define GC_static_roots GC_arrays._static_roots +#define GC_top_index GC_arrays._top_index +#define GC_uobjfreelist GC_arrays._uobjfreelist +#define GC_valid_offsets GC_arrays._valid_offsets + +#define beginGC_arrays ((ptr_t)(&GC_arrays)) +#define endGC_arrays (((ptr_t)(&GC_arrays)) + (sizeof GC_arrays)) +#define USED_HEAP_SIZE (GC_heapsize - GC_large_free_bytes) + +/* Object kinds: */ +#ifndef MAXOBJKINDS +# define MAXOBJKINDS 16 +#endif +GC_EXTERN struct obj_kind { + void **ok_freelist; /* Array of free list headers for this kind of */ + /* object. Point either to GC_arrays or to */ + /* storage allocated with GC_scratch_alloc. */ + struct hblk **ok_reclaim_list; + /* List headers for lists of blocks waiting to */ + /* be swept. Indexed by object size in */ + /* granules. */ + word ok_descriptor; /* Descriptor template for objects in this */ + /* block. */ + GC_bool ok_relocate_descr; + /* Add object size in bytes to descriptor */ + /* template to obtain descriptor. Otherwise */ + /* template is used as is. */ + GC_bool ok_init; /* Clear objects before putting them on the free list. */ +# ifdef ENABLE_DISCLAIM + GC_bool ok_mark_unconditionally; + /* Mark from all, including unmarked, objects */ + /* in block. Used to protect objects reachable */ + /* from reclaim notifiers. */ + int (GC_CALLBACK *ok_disclaim_proc)(void * /*obj*/); + /* The disclaim procedure is called before obj */ + /* is reclaimed, but must also tolerate being */ + /* called with object from freelist. Non-zero */ + /* exit prevents object from being reclaimed. */ +# define OK_DISCLAIM_INITZ /* comma */, FALSE, 0 +# else +# define OK_DISCLAIM_INITZ /* empty */ +# endif /* !ENABLE_DISCLAIM */ +} GC_obj_kinds[MAXOBJKINDS]; + +#define beginGC_obj_kinds ((ptr_t)(&GC_obj_kinds)) +#define endGC_obj_kinds (beginGC_obj_kinds + (sizeof GC_obj_kinds)) + +/* Variables that used to be in GC_arrays, but need to be accessed by */ +/* inline allocation code. If they were in GC_arrays, the inlined */ +/* allocation code would include GC_arrays offsets (as it did), which */ +/* introduce maintenance problems. */ + +#ifdef SEPARATE_GLOBALS + extern word GC_bytes_allocd; + /* Number of bytes allocated during this collection cycle. */ + extern ptr_t GC_objfreelist[MAXOBJGRANULES+1]; + /* free list for NORMAL objects */ +# define beginGC_objfreelist ((ptr_t)(&GC_objfreelist)) +# define endGC_objfreelist (beginGC_objfreelist + sizeof(GC_objfreelist)) + + extern ptr_t GC_aobjfreelist[MAXOBJGRANULES+1]; + /* free list for atomic (PTRFREE) objects */ +# define beginGC_aobjfreelist ((ptr_t)(&GC_aobjfreelist)) +# define endGC_aobjfreelist (beginGC_aobjfreelist + sizeof(GC_aobjfreelist)) +#endif /* SEPARATE_GLOBALS */ + +/* Predefined kinds: */ +#define PTRFREE 0 +#define NORMAL 1 +#define UNCOLLECTABLE 2 +#ifdef GC_ATOMIC_UNCOLLECTABLE +# define AUNCOLLECTABLE 3 +# define STUBBORN 4 +# define IS_UNCOLLECTABLE(k) (((k) & ~1) == UNCOLLECTABLE) +#else +# define STUBBORN 3 +# define IS_UNCOLLECTABLE(k) ((k) == UNCOLLECTABLE) +#endif + +GC_EXTERN unsigned GC_n_kinds; + +GC_EXTERN word GC_n_heap_sects; /* Number of separately added heap */ + /* sections. */ + +#ifdef USE_PROC_FOR_LIBRARIES + GC_EXTERN word GC_n_memory; /* Number of GET_MEM allocated memory */ + /* sections. */ +#endif + +GC_EXTERN size_t GC_page_size; + +/* Round up allocation size to a multiple of a page size. */ +/* GC_setpagesize() is assumed to be already invoked. */ +#define ROUNDUP_PAGESIZE(lb) /* lb should have no side-effect */ \ + (SIZET_SAT_ADD(lb, GC_page_size - 1) & ~(GC_page_size - 1)) + +/* Same as above but used to make GET_MEM() argument safe. */ +#ifdef MMAP_SUPPORTED +# define ROUNDUP_PAGESIZE_IF_MMAP(lb) ROUNDUP_PAGESIZE(lb) +#else +# define ROUNDUP_PAGESIZE_IF_MMAP(lb) (lb) +#endif + +#if defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32) + struct _SYSTEM_INFO; + GC_EXTERN struct _SYSTEM_INFO GC_sysinfo; + GC_INNER GC_bool GC_is_heap_base(ptr_t p); +#endif + +GC_EXTERN word GC_black_list_spacing; + /* Average number of bytes between blacklisted */ + /* blocks. Approximate. */ + /* Counts only blocks that are */ + /* "stack-blacklisted", i.e. that are */ + /* problematic in the interior of an object. */ + +#ifdef GC_GCJ_SUPPORT + extern struct hblk * GC_hblkfreelist[]; + /* Remains visible to GNU GCJ. */ +#endif + +#ifdef GC_DISABLE_INCREMENTAL +# define GC_incremental FALSE + /* Hopefully allow optimizer to remove some code. */ +# define TRUE_INCREMENTAL FALSE +#else + GC_EXTERN GC_bool GC_incremental; + /* Using incremental/generational collection. */ + /* Assumes dirty bits are being maintained. */ +# define TRUE_INCREMENTAL \ + (GC_incremental && GC_time_limit != GC_TIME_UNLIMITED) + /* True incremental, not just generational, mode */ +#endif /* !GC_DISABLE_INCREMENTAL */ + +GC_EXTERN word GC_root_size; /* Total size of registered root sections. */ + +GC_EXTERN GC_bool GC_debugging_started; + /* GC_debug_malloc has been called. */ + +/* This is used by GC_do_blocking[_inner](). */ +struct blocking_data { + GC_fn_type fn; + void * client_data; /* and result */ +}; + +/* This is used by GC_call_with_gc_active(), GC_push_all_stack_sections(). */ +struct GC_traced_stack_sect_s { + ptr_t saved_stack_ptr; +# ifdef IA64 + ptr_t saved_backing_store_ptr; + ptr_t backing_store_end; +# endif + struct GC_traced_stack_sect_s *prev; +}; + +#ifdef THREADS + /* Process all "traced stack sections" - scan entire stack except for */ + /* frames belonging to the user functions invoked by GC_do_blocking. */ + GC_INNER void GC_push_all_stack_sections(ptr_t lo, ptr_t hi, + struct GC_traced_stack_sect_s *traced_stack_sect); + GC_EXTERN word GC_total_stacksize; /* updated on every push_all_stacks */ +#else + GC_EXTERN ptr_t GC_blocked_sp; + GC_EXTERN struct GC_traced_stack_sect_s *GC_traced_stack_sect; + /* Points to the "frame" data held in stack by */ + /* the innermost GC_call_with_gc_active(). */ + /* NULL if no such "frame" active. */ +#endif /* !THREADS */ + +#ifdef IA64 + /* Similar to GC_push_all_stack_sections() but for IA-64 registers store. */ + GC_INNER void GC_push_all_register_sections(ptr_t bs_lo, ptr_t bs_hi, + int eager, struct GC_traced_stack_sect_s *traced_stack_sect); +#endif + +/* Marks are in a reserved area in */ +/* each heap block. Each word has one mark bit associated */ +/* with it. Only those corresponding to the beginning of an */ +/* object are used. */ + +/* Mark bit operations */ + +/* + * Retrieve, set, clear the nth mark bit in a given heap block. + * + * (Recall that bit n corresponds to nth object or allocation granule + * relative to the beginning of the block, including unused words) + */ + +#ifdef USE_MARK_BYTES +# define mark_bit_from_hdr(hhdr,n) ((hhdr)->hb_marks[n]) +# define set_mark_bit_from_hdr(hhdr,n) ((hhdr)->hb_marks[n] = 1) +# define clear_mark_bit_from_hdr(hhdr,n) ((hhdr)->hb_marks[n] = 0) +#else +/* Set mark bit correctly, even if mark bits may be concurrently */ +/* accessed. */ +# ifdef PARALLEL_MARK + /* This is used only if we explicitly set USE_MARK_BITS. */ +# define OR_WORD(addr, bits) AO_or((volatile AO_t *)(addr), (AO_t)(bits)) +# else +# define OR_WORD(addr, bits) (void)(*(addr) |= (bits)) +# endif +# define mark_bit_from_hdr(hhdr,n) \ + (((hhdr)->hb_marks[divWORDSZ(n)] >> modWORDSZ(n)) & (word)1) +# define set_mark_bit_from_hdr(hhdr,n) \ + OR_WORD((hhdr)->hb_marks+divWORDSZ(n), (word)1 << modWORDSZ(n)) +# define clear_mark_bit_from_hdr(hhdr,n) \ + ((hhdr)->hb_marks[divWORDSZ(n)] &= ~((word)1 << modWORDSZ(n))) +#endif /* !USE_MARK_BYTES */ + +#ifdef MARK_BIT_PER_OBJ +# define MARK_BIT_NO(offset, sz) (((unsigned)(offset))/(sz)) + /* Get the mark bit index corresponding to the given byte */ + /* offset and size (in bytes). */ +# define MARK_BIT_OFFSET(sz) 1 + /* Spacing between useful mark bits. */ +# define IF_PER_OBJ(x) x +# define FINAL_MARK_BIT(sz) ((sz) > MAXOBJBYTES? 1 : HBLK_OBJS(sz)) + /* Position of final, always set, mark bit. */ +#else /* MARK_BIT_PER_GRANULE */ +# define MARK_BIT_NO(offset, sz) BYTES_TO_GRANULES((unsigned)(offset)) +# define MARK_BIT_OFFSET(sz) BYTES_TO_GRANULES(sz) +# define IF_PER_OBJ(x) +# define FINAL_MARK_BIT(sz) \ + ((sz) > MAXOBJBYTES ? MARK_BITS_PER_HBLK \ + : BYTES_TO_GRANULES((sz) * HBLK_OBJS(sz))) +#endif + +/* Important internal collector routines */ + +GC_INNER ptr_t GC_approx_sp(void); + +GC_INNER GC_bool GC_should_collect(void); + +void GC_apply_to_all_blocks(void (*fn)(struct hblk *h, word client_data), + word client_data); + /* Invoke fn(hbp, client_data) for each */ + /* allocated heap block. */ +GC_INNER struct hblk * GC_next_used_block(struct hblk * h); + /* Return first in-use block >= h */ +GC_INNER struct hblk * GC_prev_block(struct hblk * h); + /* Return last block <= h. Returned block */ + /* is managed by GC, but may or may not be in */ + /* use. */ +GC_INNER void GC_mark_init(void); +GC_INNER void GC_clear_marks(void); + /* Clear mark bits for all heap objects. */ +GC_INNER void GC_invalidate_mark_state(void); + /* Tell the marker that marked */ + /* objects may point to unmarked */ + /* ones, and roots may point to */ + /* unmarked objects. Reset mark stack. */ +GC_INNER GC_bool GC_mark_some(ptr_t cold_gc_frame); + /* Perform about one pages worth of marking */ + /* work of whatever kind is needed. Returns */ + /* quickly if no collection is in progress. */ + /* Return TRUE if mark phase finished. */ +GC_INNER void GC_initiate_gc(void); + /* initiate collection. */ + /* If the mark state is invalid, this */ + /* becomes full collection. Otherwise */ + /* it's partial. */ + +GC_INNER GC_bool GC_collection_in_progress(void); + /* Collection is in progress, or was abandoned. */ + +#define GC_PUSH_ALL_SYM(sym) \ + GC_push_all((ptr_t)&(sym), (ptr_t)&(sym) + sizeof(sym)) + +GC_INNER void GC_push_all_stack(ptr_t b, ptr_t t); + /* As GC_push_all but consider */ + /* interior pointers as valid. */ + + /* In the threads case, we push part of the current thread stack */ + /* with GC_push_all_eager when we push the registers. This gets the */ + /* callee-save registers that may disappear. The remainder of the */ + /* stacks are scheduled for scanning in *GC_push_other_roots, which */ + /* is thread-package-specific. */ + +GC_INNER void GC_push_roots(GC_bool all, ptr_t cold_gc_frame); + /* Push all or dirty roots. */ + +GC_API_PRIV GC_push_other_roots_proc GC_push_other_roots; + /* Push system or application specific roots */ + /* onto the mark stack. In some environments */ + /* (e.g. threads environments) this is */ + /* predefined to be non-zero. A client */ + /* supplied replacement should also call the */ + /* original function. Remains externally */ + /* visible as used by some well-known 3rd-party */ + /* software (e.g., ECL) currently. */ + +#ifdef THREADS + void GC_push_thread_structures(void); +#endif +GC_EXTERN void (*GC_push_typed_structures)(void); + /* A pointer such that we can avoid linking in */ + /* the typed allocation support if unused. */ + +GC_INNER void GC_with_callee_saves_pushed(void (*fn)(ptr_t, void *), + volatile ptr_t arg); + +#if defined(SPARC) || defined(IA64) + /* Cause all stacked registers to be saved in memory. Return a */ + /* pointer to the top of the corresponding memory stack. */ + ptr_t GC_save_regs_in_stack(void); +#endif + /* Push register contents onto mark stack. */ + +#if defined(MSWIN32) || defined(MSWINCE) + void __cdecl GC_push_one(word p); +#else + void GC_push_one(word p); + /* If p points to an object, mark it */ + /* and push contents on the mark stack */ + /* Pointer recognition test always */ + /* accepts interior pointers, i.e. this */ + /* is appropriate for pointers found on */ + /* stack. */ +#endif + +#if defined(PRINT_BLACK_LIST) || defined(KEEP_BACK_PTRS) + GC_INNER void GC_mark_and_push_stack(ptr_t p, ptr_t source); + /* Ditto, omits plausibility test */ +#else + GC_INNER void GC_mark_and_push_stack(ptr_t p); +#endif + +GC_INNER void GC_clear_hdr_marks(hdr * hhdr); + /* Clear the mark bits in a header */ +GC_INNER void GC_set_hdr_marks(hdr * hhdr); + /* Set the mark bits in a header */ +GC_INNER void GC_set_fl_marks(ptr_t p); + /* Set all mark bits associated with */ + /* a free list. */ +#if defined(GC_ASSERTIONS) && defined(THREADS) && defined(THREAD_LOCAL_ALLOC) + void GC_check_fl_marks(void **); + /* Check that all mark bits */ + /* associated with a free list are */ + /* set. Abort if not. */ +#endif +void GC_add_roots_inner(ptr_t b, ptr_t e, GC_bool tmp); +GC_INNER void GC_exclude_static_roots_inner(void *start, void *finish); +#if defined(DYNAMIC_LOADING) || defined(MSWIN32) || defined(MSWINCE) \ + || defined(CYGWIN32) || defined(PCR) + GC_INNER void GC_register_dynamic_libraries(void); + /* Add dynamic library data sections to the root set. */ +#endif +GC_INNER void GC_cond_register_dynamic_libraries(void); + /* Remove and reregister dynamic libraries if we're */ + /* configured to do that at each GC. */ + +/* Machine dependent startup routines */ +ptr_t GC_get_main_stack_base(void); /* Cold end of stack. */ +#ifdef IA64 + GC_INNER ptr_t GC_get_register_stack_base(void); + /* Cold end of register stack. */ +#endif +void GC_register_data_segments(void); + +#ifdef THREADS + GC_INNER void GC_thr_init(void); + GC_INNER void GC_init_parallel(void); +#else + GC_INNER GC_bool GC_is_static_root(ptr_t p); + /* Is the address p in one of the registered static */ + /* root sections? */ +#endif + +/* Black listing: */ +#ifdef PRINT_BLACK_LIST + GC_INNER void GC_add_to_black_list_normal(word p, ptr_t source); + /* Register bits as a possible future false */ + /* reference from the heap or static data */ +# define GC_ADD_TO_BLACK_LIST_NORMAL(bits, source) \ + if (GC_all_interior_pointers) { \ + GC_add_to_black_list_stack((word)(bits), (source)); \ + } else \ + GC_add_to_black_list_normal((word)(bits), (source)) + GC_INNER void GC_add_to_black_list_stack(word p, ptr_t source); +# define GC_ADD_TO_BLACK_LIST_STACK(bits, source) \ + GC_add_to_black_list_stack((word)(bits), (source)) +#else + GC_INNER void GC_add_to_black_list_normal(word p); +# define GC_ADD_TO_BLACK_LIST_NORMAL(bits, source) \ + if (GC_all_interior_pointers) { \ + GC_add_to_black_list_stack((word)(bits)); \ + } else \ + GC_add_to_black_list_normal((word)(bits)) + GC_INNER void GC_add_to_black_list_stack(word p); +# define GC_ADD_TO_BLACK_LIST_STACK(bits, source) \ + GC_add_to_black_list_stack((word)(bits)) +#endif /* PRINT_BLACK_LIST */ + +struct hblk * GC_is_black_listed(struct hblk * h, word len); + /* If there are likely to be false references */ + /* to a block starting at h of the indicated */ + /* length, then return the next plausible */ + /* starting location for h that might avoid */ + /* these false references. Remains externally */ + /* visible as used by GNU GCJ currently. */ + +GC_INNER void GC_promote_black_lists(void); + /* Declare an end to a black listing phase. */ +GC_INNER void GC_unpromote_black_lists(void); + /* Approximately undo the effect of the above. */ + /* This actually loses some information, but */ + /* only in a reasonably safe way. */ + +GC_INNER ptr_t GC_scratch_alloc(size_t bytes); + /* GC internal memory allocation for */ + /* small objects. Deallocation is not */ + /* possible. May return NULL. */ + +#ifdef GWW_VDB + /* GC_scratch_recycle_no_gww() not used. */ +#else +# define GC_scratch_recycle_no_gww GC_scratch_recycle_inner +#endif +GC_INNER void GC_scratch_recycle_inner(void *ptr, size_t bytes); + /* Reuse the memory region by the heap. */ + +/* Heap block layout maps: */ +GC_INNER GC_bool GC_add_map_entry(size_t sz); + /* Add a heap block map for objects of */ + /* size sz to obj_map. */ + /* Return FALSE on failure. */ +GC_INNER void GC_register_displacement_inner(size_t offset); + /* Version of GC_register_displacement */ + /* that assumes lock is already held. */ + +/* hblk allocation: */ +GC_INNER void GC_new_hblk(size_t size_in_granules, int kind); + /* Allocate a new heap block, and build */ + /* a free list in it. */ + +GC_INNER ptr_t GC_build_fl(struct hblk *h, size_t words, GC_bool clear, + ptr_t list); + /* Build a free list for objects of */ + /* size sz in block h. Append list to */ + /* end of the free lists. Possibly */ + /* clear objects on the list. Normally */ + /* called by GC_new_hblk, but also */ + /* called explicitly without GC lock. */ + +GC_INNER struct hblk * GC_allochblk(size_t size_in_bytes, int kind, + unsigned flags); + /* Allocate a heap block, inform */ + /* the marker that block is valid */ + /* for objects of indicated size. */ + +GC_INNER ptr_t GC_alloc_large(size_t lb, int k, unsigned flags); + /* Allocate a large block of size lb bytes. */ + /* The block is not cleared. */ + /* Flags is 0 or IGNORE_OFF_PAGE. */ + /* Calls GC_allchblk to do the actual */ + /* allocation, but also triggers GC and/or */ + /* heap expansion as appropriate. */ + /* Does not update GC_bytes_allocd, but does */ + /* other accounting. */ + +GC_INNER void GC_freehblk(struct hblk * p); + /* Deallocate a heap block and mark it */ + /* as invalid. */ + +/* Misc GC: */ +GC_INNER GC_bool GC_expand_hp_inner(word n); +GC_INNER void GC_start_reclaim(GC_bool abort_if_found); + /* Restore unmarked objects to free */ + /* lists, or (if abort_if_found is */ + /* TRUE) report them. */ + /* Sweeping of small object pages is */ + /* largely deferred. */ +GC_INNER void GC_continue_reclaim(size_t sz, int kind); + /* Sweep pages of the given size and */ + /* kind, as long as possible, and */ + /* as long as the corr. free list is */ + /* empty. Sz is in granules. */ + +GC_INNER GC_bool GC_reclaim_all(GC_stop_func stop_func, GC_bool ignore_old); + /* Reclaim all blocks. Abort (in a */ + /* consistent state) if f returns TRUE. */ +GC_INNER ptr_t GC_reclaim_generic(struct hblk * hbp, hdr *hhdr, size_t sz, + GC_bool init, ptr_t list, + signed_word *count); + /* Rebuild free list in hbp with */ + /* header hhdr, with objects of size sz */ + /* bytes. Add list to the end of the */ + /* free list. Add the number of */ + /* reclaimed bytes to *count. */ +GC_INNER GC_bool GC_block_empty(hdr * hhdr); + /* Block completely unmarked? */ +GC_INNER int GC_CALLBACK GC_never_stop_func(void); + /* Always returns 0 (FALSE). */ +GC_INNER GC_bool GC_try_to_collect_inner(GC_stop_func f); + + /* Collect; caller must have acquired */ + /* lock. Collection is aborted if f */ + /* returns TRUE. Returns TRUE if it */ + /* completes successfully. */ +#define GC_gcollect_inner() \ + (void)GC_try_to_collect_inner(GC_never_stop_func) + +GC_EXTERN GC_bool GC_is_initialized; /* GC_init() has been run. */ + +#if defined(MSWIN32) || defined(MSWINCE) + void GC_deinit(void); + /* Free any resources allocated by */ + /* GC_init */ +#endif + +GC_INNER void GC_collect_a_little_inner(int n); + /* Do n units worth of garbage */ + /* collection work, if appropriate. */ + /* A unit is an amount appropriate for */ + /* HBLKSIZE bytes of allocation. */ + +GC_INNER void * GC_generic_malloc_inner(size_t lb, int k); + /* Allocate an object of the given */ + /* kind but assuming lock already held. */ +#if defined(DBG_HDRS_ALL) || defined(GC_GCJ_SUPPORT) \ + || !defined(GC_NO_FINALIZATION) + GC_INNER void * GC_generic_malloc_inner_ignore_off_page(size_t lb, int k); + /* Allocate an object, where */ + /* the client guarantees that there */ + /* will always be a pointer to the */ + /* beginning of the object while the */ + /* object is live. */ +#endif + +GC_INNER ptr_t GC_allocobj(size_t sz, int kind); + /* Make the indicated */ + /* free list nonempty, and return its */ + /* head. Sz is in granules. */ + +#ifdef GC_ADD_CALLER + /* GC_DBG_EXTRAS is used by GC debug API functions (unlike GC_EXTRAS */ + /* used by GC debug API macros) thus GC_RETURN_ADDR_PARENT (pointing */ + /* to client caller) should be used if possible. */ +# ifdef GC_HAVE_RETURN_ADDR_PARENT +# define GC_DBG_EXTRAS GC_RETURN_ADDR_PARENT, NULL, 0 +# else +# define GC_DBG_EXTRAS GC_RETURN_ADDR, NULL, 0 +# endif +#else +# define GC_DBG_EXTRAS "unknown", 0 +#endif + +/* We make the GC_clear_stack() call a tail one, hoping to get more of */ +/* the stack. */ +#define GENERAL_MALLOC(lb,k) \ + GC_clear_stack(GC_generic_malloc(lb, k)) +#define GENERAL_MALLOC_IOP(lb,k) \ + GC_clear_stack(GC_generic_malloc_ignore_off_page(lb, k)) + +#ifdef GC_COLLECT_AT_MALLOC + extern size_t GC_dbg_collect_at_malloc_min_lb; + /* variable visible outside for debugging */ +# define GC_DBG_COLLECT_AT_MALLOC(lb) \ + (void)((lb) >= GC_dbg_collect_at_malloc_min_lb ? \ + (GC_gcollect(), 0) : 0) +#else +# define GC_DBG_COLLECT_AT_MALLOC(lb) (void)0 +#endif /* !GC_COLLECT_AT_MALLOC */ + +/* Allocation routines that bypass the thread local cache. */ +#if defined(THREAD_LOCAL_ALLOC) && defined(GC_GCJ_SUPPORT) + GC_INNER void * GC_core_gcj_malloc(size_t, void *); +#endif + +GC_INNER void GC_init_headers(void); +GC_INNER struct hblkhdr * GC_install_header(struct hblk *h); + /* Install a header for block h. */ + /* Return 0 on failure, or the header */ + /* otherwise. */ +GC_INNER GC_bool GC_install_counts(struct hblk * h, size_t sz); + /* Set up forwarding counts for block */ + /* h of size sz. */ + /* Return FALSE on failure. */ +GC_INNER void GC_remove_header(struct hblk * h); + /* Remove the header for block h. */ +GC_INNER void GC_remove_counts(struct hblk * h, size_t sz); + /* Remove forwarding counts for h. */ +GC_INNER hdr * GC_find_header(ptr_t h); + +GC_INNER void GC_add_to_heap(struct hblk *p, size_t bytes); + /* Add a HBLKSIZE aligned chunk to the heap. */ + +#ifdef USE_PROC_FOR_LIBRARIES + GC_INNER void GC_add_to_our_memory(ptr_t p, size_t bytes); + /* Add a chunk to GC_our_memory. */ + /* If p == 0, do nothing. */ +#else +# define GC_add_to_our_memory(p, bytes) +#endif + +GC_INNER void GC_print_all_errors(void); + /* Print smashed and leaked objects, if any. */ + /* Clear the lists of such objects. */ + +GC_EXTERN void (*GC_check_heap)(void); + /* Check that all objects in the heap with */ + /* debugging info are intact. */ + /* Add any that are not to GC_smashed list. */ +GC_EXTERN void (*GC_print_all_smashed)(void); + /* Print GC_smashed if it's not empty. */ + /* Clear GC_smashed list. */ +GC_EXTERN void (*GC_print_heap_obj)(ptr_t p); + /* If possible print (using GC_err_printf) */ + /* a more detailed description (terminated with */ + /* "\n") of the object referred to by p. */ + +#if defined(LINUX) && defined(__ELF__) && !defined(SMALL_CONFIG) + void GC_print_address_map(void); + /* Print an address map of the process. */ +#endif + +#ifndef SHORT_DBG_HDRS + GC_EXTERN GC_bool GC_findleak_delay_free; + /* Do not immediately deallocate object on */ + /* free() in the leak-finding mode, just mark */ + /* it as freed (and deallocate it after GC). */ + GC_INNER GC_bool GC_check_leaked(ptr_t base); /* from dbg_mlc.c */ +#endif + +GC_EXTERN GC_bool GC_have_errors; /* We saw a smashed or leaked object. */ + /* Call error printing routine */ + /* occasionally. It is OK to read it */ + /* without acquiring the lock. */ + +#define VERBOSE 2 +#ifndef SMALL_CONFIG + /* GC_print_stats should be visible to extra/MacOS.c. */ + extern int GC_print_stats; /* Nonzero generates basic GC log. */ + /* VERBOSE generates add'l messages. */ +#else /* SMALL_CONFIG */ +# define GC_print_stats 0 + /* Will this remove the message character strings from the executable? */ + /* With a particular level of optimizations, it should... */ +#endif + +#ifdef KEEP_BACK_PTRS + GC_EXTERN long GC_backtraces; + GC_INNER void GC_generate_random_backtrace_no_gc(void); +#endif + +#ifdef LINT2 +# define GC_RAND_MAX (~0U >> 1) + GC_API_PRIV long GC_random(void); +#endif + +GC_EXTERN GC_bool GC_print_back_height; + +#ifdef MAKE_BACK_GRAPH + void GC_print_back_graph_stats(void); +#endif + +#ifdef THREADS + GC_INNER void GC_free_inner(void * p); +#endif + +/* Macros used for collector internal allocation. */ +/* These assume the collector lock is held. */ +#ifdef DBG_HDRS_ALL + GC_INNER void * GC_debug_generic_malloc_inner(size_t lb, int k); + GC_INNER void * GC_debug_generic_malloc_inner_ignore_off_page(size_t lb, + int k); +# define GC_INTERNAL_MALLOC GC_debug_generic_malloc_inner +# define GC_INTERNAL_MALLOC_IGNORE_OFF_PAGE \ + GC_debug_generic_malloc_inner_ignore_off_page +# ifdef THREADS + GC_INNER void GC_debug_free_inner(void * p); +# define GC_INTERNAL_FREE GC_debug_free_inner +# else +# define GC_INTERNAL_FREE GC_debug_free +# endif +#else +# define GC_INTERNAL_MALLOC GC_generic_malloc_inner +# define GC_INTERNAL_MALLOC_IGNORE_OFF_PAGE \ + GC_generic_malloc_inner_ignore_off_page +# ifdef THREADS +# define GC_INTERNAL_FREE GC_free_inner +# else +# define GC_INTERNAL_FREE GC_free +# endif +#endif /* !DBG_HDRS_ALL */ + +#ifdef USE_MUNMAP + /* Memory unmapping: */ + GC_INNER void GC_unmap_old(void); + GC_INNER void GC_merge_unmapped(void); + GC_INNER void GC_unmap(ptr_t start, size_t bytes); + GC_INNER void GC_remap(ptr_t start, size_t bytes); + GC_INNER void GC_unmap_gap(ptr_t start1, size_t bytes1, ptr_t start2, + size_t bytes2); +#endif + +#ifdef CAN_HANDLE_FORK + GC_EXTERN int GC_handle_fork; + /* Fork-handling mode: */ + /* 0 means no fork handling requested (but client could */ + /* anyway call fork() provided it is surrounded with */ + /* GC_atfork_prepare/parent/child calls); */ + /* -1 means GC tries to use pthread_at_fork if it is */ + /* available (if it succeeds then GC_handle_fork value */ + /* is changed to 1), client should nonetheless surround */ + /* fork() with GC_atfork_prepare/parent/child (for the */ + /* case of pthread_at_fork failure or absence); */ + /* 1 (or other values) means client fully relies on */ + /* pthread_at_fork (so if it is missing or failed then */ + /* abort occurs in GC_init), GC_atfork_prepare and the */ + /* accompanying routines are no-op in such a case. */ +#endif + +#ifndef GC_DISABLE_INCREMENTAL + /* Virtual dirty bit implementation: */ + /* Each implementation exports the following: */ + GC_INNER void GC_read_dirty(void); + /* Retrieve dirty bits. */ + GC_INNER GC_bool GC_page_was_dirty(struct hblk *h); + /* Read retrieved dirty bits. */ + + GC_INNER void GC_remove_protection(struct hblk *h, word nblocks, + GC_bool pointerfree); + /* h is about to be written or allocated. Ensure that */ + /* it is not write protected by the virtual dirty bit */ + /* implementation. I.e., this is a call that: */ + /* - hints that [h, h+nblocks) is about to be written; */ + /* - guarantees that protection is removed; */ + /* - may speed up some dirty bit implementations; */ + /* - may be essential if we need to ensure that */ + /* pointer-free system call buffers in the heap are */ + /* not protected. */ + + GC_INNER GC_bool GC_dirty_init(void); + /* Returns true if dirty bits are maintained (otherwise */ + /* it is OK to be called again if the client invokes */ + /* GC_enable_incremental once more). */ +#endif /* !GC_DISABLE_INCREMENTAL */ + +/* Same as GC_base but excepts and returns a pointer to const object. */ +#define GC_base_C(p) ((const void *)GC_base((/* no const */ void *)(p))) + +/* Stubborn objects: */ +void GC_read_changed(void); /* Analogous to GC_read_dirty */ +GC_bool GC_page_was_changed(struct hblk * h); + /* Analogous to GC_page_was_dirty */ +void GC_clean_changing_list(void); + /* Collect obsolete changing list entries */ +void GC_stubborn_init(void); + +/* Debugging print routines: */ +void GC_print_block_list(void); +void GC_print_hblkfreelist(void); +void GC_print_heap_sects(void); +void GC_print_static_roots(void); +/* void GC_dump(void); - declared in gc.h */ + +extern word GC_fo_entries; /* should be visible in extra/MacOS.c */ + +#ifdef KEEP_BACK_PTRS + GC_INNER void GC_store_back_pointer(ptr_t source, ptr_t dest); + GC_INNER void GC_marked_for_finalization(ptr_t dest); +# define GC_STORE_BACK_PTR(source, dest) GC_store_back_pointer(source, dest) +# define GC_MARKED_FOR_FINALIZATION(dest) GC_marked_for_finalization(dest) +#else +# define GC_STORE_BACK_PTR(source, dest) +# define GC_MARKED_FOR_FINALIZATION(dest) +#endif + +/* Make arguments appear live to compiler */ +void GC_noop6(word, word, word, word, word, word); + +GC_API void GC_CALL GC_noop1(word); + +#ifndef GC_ATTR_FORMAT_PRINTF +# if defined(__GNUC__) && __GNUC__ >= 3 +# define GC_ATTR_FORMAT_PRINTF(spec_argnum, first_checked) \ + __attribute__((__format__(__printf__, spec_argnum, first_checked))) +# else +# define GC_ATTR_FORMAT_PRINTF(spec_argnum, first_checked) +# endif +#endif + +/* Logging and diagnostic output: */ +/* GC_printf is used typically on client explicit print requests. */ +/* For all GC_X_printf routines, it is recommended to put "\n" at */ +/* 'format' string end (for output atomicity). */ +GC_API_PRIV void GC_printf(const char * format, ...) + GC_ATTR_FORMAT_PRINTF(1, 2); + /* A version of printf that doesn't allocate, */ + /* 1K total output length. */ + /* (We use sprintf. Hopefully that doesn't */ + /* allocate for long arguments.) */ +GC_API_PRIV void GC_err_printf(const char * format, ...) + GC_ATTR_FORMAT_PRINTF(1, 2); + +/* Basic logging routine. Typically, GC_log_printf is called directly */ +/* only inside various DEBUG_x blocks. */ +#if defined(__cplusplus) && defined(SYMBIAN) + extern "C" { +#endif +GC_API_PRIV void GC_log_printf(const char * format, ...) + GC_ATTR_FORMAT_PRINTF(1, 2); +#if defined(__cplusplus) && defined(SYMBIAN) + } +#endif + +#ifndef GC_ANDROID_LOG +# define GC_PRINT_STATS_FLAG (GC_print_stats != 0) +# define GC_INFOLOG_PRINTF GC_COND_LOG_PRINTF + /* GC_verbose_log_printf is called only if GC_print_stats is VERBOSE. */ +# define GC_verbose_log_printf GC_log_printf +#else + extern GC_bool GC_quiet; +# define GC_PRINT_STATS_FLAG (!GC_quiet) + /* INFO/DBG loggers are enabled even if GC_print_stats is off. */ +# ifndef GC_INFOLOG_PRINTF +# define GC_INFOLOG_PRINTF if (GC_quiet) {} else GC_info_log_printf +# endif + GC_INNER void GC_info_log_printf(const char *format, ...) + GC_ATTR_FORMAT_PRINTF(1, 2); + GC_INNER void GC_verbose_log_printf(const char *format, ...) + GC_ATTR_FORMAT_PRINTF(1, 2); +#endif /* GC_ANDROID_LOG */ + +/* Convenient macros for GC_[verbose_]log_printf invocation. */ +#define GC_COND_LOG_PRINTF \ + if (EXPECT(!GC_print_stats, TRUE)) {} else GC_log_printf +#define GC_VERBOSE_LOG_PRINTF \ + if (EXPECT(GC_print_stats != VERBOSE, TRUE)) {} else GC_verbose_log_printf +#ifndef GC_DBGLOG_PRINTF +# define GC_DBGLOG_PRINTF if (!GC_PRINT_STATS_FLAG) {} else GC_log_printf +#endif + +void GC_err_puts(const char *s); + /* Write s to stderr, don't buffer, don't add */ + /* newlines, don't ... */ + +/* Handy macro for logging size values (of word type) in KiB (rounding */ +/* to nearest value). */ +#define TO_KiB_UL(v) ((unsigned long)(((v) + ((1 << 9) - 1)) >> 10)) + +GC_EXTERN unsigned GC_fail_count; + /* How many consecutive GC/expansion failures? */ + /* Reset by GC_allochblk(); defined in alloc.c. */ + +GC_EXTERN long GC_large_alloc_warn_interval; /* defined in misc.c */ + +GC_EXTERN signed_word GC_bytes_found; + /* Number of reclaimed bytes after garbage collection; */ + /* protected by GC lock; defined in reclaim.c. */ + +#ifndef GC_GET_HEAP_USAGE_NOT_NEEDED + GC_EXTERN word GC_reclaimed_bytes_before_gc; + /* Number of bytes reclaimed before this */ + /* collection cycle; used for statistics only. */ +#endif + +#ifdef USE_MUNMAP + GC_EXTERN int GC_unmap_threshold; /* defined in allchblk.c */ + GC_EXTERN GC_bool GC_force_unmap_on_gcollect; /* defined in misc.c */ +#endif + +#ifdef MSWIN32 + GC_EXTERN GC_bool GC_no_win32_dlls; /* defined in os_dep.c */ + GC_EXTERN GC_bool GC_wnt; /* Is Windows NT derivative; */ + /* defined and set in os_dep.c. */ +#endif + +#ifdef THREADS +# if defined(MSWIN32) || defined(MSWINCE) + GC_EXTERN CRITICAL_SECTION GC_write_cs; /* defined in misc.c */ +# ifdef GC_ASSERTIONS + GC_EXTERN GC_bool GC_write_disabled; + /* defined in win32_threads.c; */ + /* protected by GC_write_cs. */ + +# endif +# endif +# ifdef MPROTECT_VDB + GC_EXTERN volatile AO_TS_t GC_fault_handler_lock; + /* defined in os_dep.c */ +# endif +# ifdef MSWINCE + GC_EXTERN GC_bool GC_dont_query_stack_min; + /* Defined and set in os_dep.c. */ +# endif +#elif defined(IA64) + GC_EXTERN ptr_t GC_save_regs_ret_val; /* defined in mach_dep.c. */ + /* Previously set to backing store pointer. */ +#endif /* !THREADS */ + +#ifdef THREAD_LOCAL_ALLOC + GC_EXTERN GC_bool GC_world_stopped; /* defined in alloc.c */ + GC_INNER void GC_mark_thread_local_free_lists(void); +#endif + +#ifdef GC_GCJ_SUPPORT +# ifdef GC_ASSERTIONS + GC_EXTERN GC_bool GC_gcj_malloc_initialized; /* defined in gcj_mlc.c */ +# endif + GC_EXTERN ptr_t * GC_gcjobjfreelist; +#endif + +#if defined(GWW_VDB) && defined(MPROTECT_VDB) + GC_INNER GC_bool GC_gww_dirty_init(void); + /* Defined in os_dep.c. Returns TRUE if GetWriteWatch is available. */ + /* May be called repeatedly. */ +#endif + +#if defined(CHECKSUMS) || defined(PROC_VDB) + GC_INNER GC_bool GC_page_was_ever_dirty(struct hblk * h); + /* Could the page contain valid heap pointers? */ +#endif + +GC_INNER void GC_default_print_heap_obj_proc(ptr_t p); + +GC_INNER void GC_extend_size_map(size_t); /* in misc.c */ + +GC_INNER void GC_setpagesize(void); + +GC_INNER void GC_initialize_offsets(void); /* defined in obj_map.c */ + +GC_INNER void GC_bl_init(void); +GC_INNER void GC_bl_init_no_interiors(void); /* defined in blacklst.c */ + +GC_INNER void GC_start_debugging(void); /* defined in dbg_mlc.c */ + +/* Store debugging info into p. Return displaced pointer. */ +/* Assumes we don't hold allocation lock. */ +GC_INNER ptr_t GC_store_debug_info(ptr_t p, word sz, const char *str, + int linenum); + +#ifdef REDIRECT_MALLOC +# ifdef GC_LINUX_THREADS + GC_INNER GC_bool GC_text_mapping(char *nm, ptr_t *startp, ptr_t *endp); + /* from os_dep.c */ +# endif +#elif defined(USE_WINALLOC) + GC_INNER void GC_add_current_malloc_heap(void); +#endif /* !REDIRECT_MALLOC */ + +#ifdef MAKE_BACK_GRAPH + GC_INNER void GC_build_back_graph(void); + GC_INNER void GC_traverse_back_graph(void); +#endif + +#ifdef MSWIN32 + GC_INNER void GC_init_win32(void); +#endif + +#if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) + GC_INNER void * GC_roots_present(ptr_t); + /* The type is a lie, since the real type doesn't make sense here, */ + /* and we only test for NULL. */ +#endif + +#ifdef GC_WIN32_THREADS + GC_INNER void GC_get_next_stack(char *start, char * limit, char **lo, + char **hi); +# ifdef MPROTECT_VDB + GC_INNER void GC_set_write_fault_handler(void); +# endif +#endif /* GC_WIN32_THREADS */ + +#ifdef THREADS + GC_INNER void GC_reset_finalizer_nested(void); + GC_INNER unsigned char *GC_check_finalizer_nested(void); + GC_INNER void GC_do_blocking_inner(ptr_t data, void * context); + GC_INNER void GC_push_all_stacks(void); +# ifdef USE_PROC_FOR_LIBRARIES + GC_INNER GC_bool GC_segment_is_thread_stack(ptr_t lo, ptr_t hi); +# endif +# ifdef IA64 + GC_INNER ptr_t GC_greatest_stack_base_below(ptr_t bound); +# endif +#endif /* THREADS */ + +#ifdef DYNAMIC_LOADING + GC_INNER GC_bool GC_register_main_static_data(void); +# ifdef DARWIN + GC_INNER void GC_init_dyld(void); +# endif +#endif /* DYNAMIC_LOADING */ + +#ifdef SEARCH_FOR_DATA_START + GC_INNER void GC_init_linux_data_start(void); +#endif + +#if defined(NETBSD) && defined(__ELF__) + GC_INNER void GC_init_netbsd_elf(void); +#endif + +#ifdef UNIX_LIKE + GC_INNER void GC_set_and_save_fault_handler(void (*handler)(int)); +#endif + +#ifdef NEED_PROC_MAPS +# if defined(DYNAMIC_LOADING) && defined(USE_PROC_FOR_LIBRARIES) + GC_INNER char *GC_parse_map_entry(char *buf_ptr, ptr_t *start, ptr_t *end, + char **prot, unsigned int *maj_dev, + char **mapping_name); +# endif + GC_INNER char *GC_get_maps(void); /* from os_dep.c */ +#endif /* NEED_PROC_MAPS */ + +#ifdef GC_ASSERTIONS +# define GC_ASSERT(expr) \ + do { \ + if (!(expr)) { \ + GC_err_printf("Assertion failure: %s:%d\n", \ + __FILE__, __LINE__); \ + ABORT("assertion failure"); \ + } \ + } while (0) + GC_INNER word GC_compute_large_free_bytes(void); + GC_INNER word GC_compute_root_size(void); +#else +# define GC_ASSERT(expr) +#endif + +/* Check a compile time assertion at compile time. The error */ +/* message for failure is a bit baroque, but ... */ +#if defined(mips) && !defined(__GNUC__) +/* DOB: MIPSPro C gets an internal error taking the sizeof an array type. + This code works correctly (ugliness is to avoid "unused var" warnings) */ +# define GC_STATIC_ASSERT(expr) \ + do { if (0) { char j[(expr)? 1 : -1]; j[0]='\0'; j[0]=j[0]; } } while(0) +#else +# define GC_STATIC_ASSERT(expr) (void)sizeof(char[(expr)? 1 : -1]) +#endif + +/* Runtime check for an argument declared as non-null is actually not null. */ +#if defined(__GNUC__) && __GNUC__ >= 4 + /* Workaround tautological-pointer-compare Clang warning. */ +# define NONNULL_ARG_NOT_NULL(arg) (*(volatile void **)&(arg) != NULL) +#else +# define NONNULL_ARG_NOT_NULL(arg) (NULL != (arg)) +#endif + +#define COND_DUMP_CHECKS \ + do { \ + GC_ASSERT(GC_compute_large_free_bytes() == GC_large_free_bytes); \ + GC_ASSERT(GC_compute_root_size() == GC_root_size); \ + } while (0) + +#ifndef NO_DEBUGGING + GC_EXTERN GC_bool GC_dump_regularly; + /* Generate regular debugging dumps. */ +# define COND_DUMP if (EXPECT(GC_dump_regularly, FALSE)) GC_dump(); \ + else COND_DUMP_CHECKS +#else +# define COND_DUMP COND_DUMP_CHECKS +#endif + +#if defined(PARALLEL_MARK) + /* We need additional synchronization facilities from the thread */ + /* support. We believe these are less performance critical */ + /* than the main garbage collector lock; standard pthreads-based */ + /* implementations should be sufficient. */ + +# define GC_markers_m1 GC_parallel + /* Number of mark threads we would like to have */ + /* excluding the initiating thread. */ + + /* The mark lock and condition variable. If the GC lock is also */ + /* acquired, the GC lock must be acquired first. The mark lock is */ + /* used to both protect some variables used by the parallel */ + /* marker, and to protect GC_fl_builder_count, below. */ + /* GC_notify_all_marker() is called when */ + /* the state of the parallel marker changes */ + /* in some significant way (see gc_mark.h for details). The */ + /* latter set of events includes incrementing GC_mark_no. */ + /* GC_notify_all_builder() is called when GC_fl_builder_count */ + /* reaches 0. */ + + GC_INNER void GC_wait_for_markers_init(void); + GC_INNER void GC_acquire_mark_lock(void); + GC_INNER void GC_release_mark_lock(void); + GC_INNER void GC_notify_all_builder(void); + GC_INNER void GC_wait_for_reclaim(void); + + GC_EXTERN signed_word GC_fl_builder_count; /* Protected by mark lock. */ + + GC_INNER void GC_notify_all_marker(void); + GC_INNER void GC_wait_marker(void); + GC_EXTERN word GC_mark_no; /* Protected by mark lock. */ + + GC_INNER void GC_help_marker(word my_mark_no); + /* Try to help out parallel marker for mark cycle */ + /* my_mark_no. Returns if the mark cycle finishes or */ + /* was already done, or there was nothing to do for */ + /* some other reason. */ + + GC_INNER void GC_start_mark_threads_inner(void); +#endif /* PARALLEL_MARK */ + +#if defined(GC_PTHREADS) && !defined(GC_WIN32_THREADS) && !defined(NACL) \ + && !defined(GC_DARWIN_THREADS) && !defined(SIG_SUSPEND) + /* We define the thread suspension signal here, so that we can refer */ + /* to it in the dirty bit implementation, if necessary. Ideally we */ + /* would allocate a (real-time?) signal using the standard mechanism. */ + /* unfortunately, there is no standard mechanism. (There is one */ + /* in Linux glibc, but it's not exported.) Thus we continue to use */ + /* the same hard-coded signals we've always used. */ +# if (defined(GC_LINUX_THREADS) || defined(GC_DGUX386_THREADS)) \ + && !defined(GC_USESIGRT_SIGNALS) +# if defined(SPARC) && !defined(SIGPWR) + /* SPARC/Linux doesn't properly define SIGPWR in . */ + /* It is aliased to SIGLOST in asm/signal.h, though. */ +# define SIG_SUSPEND SIGLOST +# else + /* Linuxthreads itself uses SIGUSR1 and SIGUSR2. */ +# define SIG_SUSPEND SIGPWR +# endif +# elif defined(GC_OPENBSD_THREADS) +# ifndef GC_OPENBSD_UTHREADS +# define SIG_SUSPEND SIGXFSZ +# endif +# elif defined(_SIGRTMIN) && !defined(CPPCHECK) +# define SIG_SUSPEND _SIGRTMIN + 6 +# else +# define SIG_SUSPEND SIGRTMIN + 6 +# endif +#endif /* GC_PTHREADS && !SIG_SUSPEND */ + +#if defined(GC_PTHREADS) && !defined(GC_SEM_INIT_PSHARED) +# define GC_SEM_INIT_PSHARED 0 +#endif + +#include + +/* Some macros for setjmp that works across signal handlers */ +/* were possible, and a couple of routines to facilitate */ +/* catching accesses to bad addresses when that's */ +/* possible/needed. */ +#if (defined(UNIX_LIKE) || (defined(NEED_FIND_LIMIT) && defined(CYGWIN32))) \ + && !defined(GC_NO_SIGSETJMP) +# if defined(SUNOS5SIGS) && !defined(FREEBSD) && !defined(LINUX) +# include +# endif + /* Define SETJMP and friends to be the version that restores */ + /* the signal mask. */ +# define SETJMP(env) sigsetjmp(env, 1) +# define LONGJMP(env, val) siglongjmp(env, val) +# define JMP_BUF sigjmp_buf +#else +# ifdef ECOS +# define SETJMP(env) hal_setjmp(env) +# else +# define SETJMP(env) setjmp(env) +# endif +# define LONGJMP(env, val) longjmp(env, val) +# define JMP_BUF jmp_buf +#endif /* !UNIX_LIKE || GC_NO_SIGSETJMP */ + +/* Do we need the GC_find_limit machinery to find the end of a */ +/* data segment. */ +#if defined(HEURISTIC2) || defined(SEARCH_FOR_DATA_START) +# define NEED_FIND_LIMIT +#endif + +#if !defined(STACKBOTTOM) && defined(HEURISTIC2) +# define NEED_FIND_LIMIT +#endif + +#if (defined(SVR4) || defined(AUX) || defined(DGUX) \ + || (defined(LINUX) && defined(SPARC))) && !defined(PCR) +# define NEED_FIND_LIMIT +#endif + +#if defined(DATASTART_USES_BSDGETDATASTART) +# include +# if !defined(PCR) +# define NEED_FIND_LIMIT +# endif + GC_INNER ptr_t GC_FreeBSDGetDataStart(size_t, ptr_t); +# define DATASTART_IS_FUNC +#endif /* DATASTART_USES_BSDGETDATASTART */ + +#if (defined(NETBSD) || defined(OPENBSD)) && defined(__ELF__) \ + && !defined(NEED_FIND_LIMIT) + /* Used by GC_init_netbsd_elf() in os_dep.c. */ +# define NEED_FIND_LIMIT +#endif + +#if defined(IA64) && !defined(NEED_FIND_LIMIT) +# define NEED_FIND_LIMIT + /* May be needed for register backing store base. */ +#endif + +#if defined(NEED_FIND_LIMIT) \ + || (defined(USE_PROC_FOR_LIBRARIES) && defined(THREADS)) + GC_EXTERN JMP_BUF GC_jmp_buf; + + /* Set up a handler for address faults which will longjmp to */ + /* GC_jmp_buf. */ + GC_INNER void GC_setup_temporary_fault_handler(void); + /* Undo the effect of GC_setup_temporary_fault_handler. */ + GC_INNER void GC_reset_fault_handler(void); +#endif /* NEED_FIND_LIMIT || USE_PROC_FOR_LIBRARIES */ + +/* Some convenience macros for cancellation support. */ +#if defined(CANCEL_SAFE) +# if defined(GC_ASSERTIONS) && (defined(USE_COMPILER_TLS) \ + || (defined(LINUX) && !defined(ARM32) \ + && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)) \ + || defined(HPUX) /* and probably others ... */)) + extern __thread unsigned char GC_cancel_disable_count; +# define NEED_CANCEL_DISABLE_COUNT +# define INCR_CANCEL_DISABLE() ++GC_cancel_disable_count +# define DECR_CANCEL_DISABLE() --GC_cancel_disable_count +# define ASSERT_CANCEL_DISABLED() GC_ASSERT(GC_cancel_disable_count > 0) +# else +# define INCR_CANCEL_DISABLE() +# define DECR_CANCEL_DISABLE() +# define ASSERT_CANCEL_DISABLED() (void)0 +# endif /* GC_ASSERTIONS & ... */ +# define DISABLE_CANCEL(state) \ + do { pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state); \ + INCR_CANCEL_DISABLE(); } while (0) +# define RESTORE_CANCEL(state) \ + do { ASSERT_CANCEL_DISABLED(); \ + pthread_setcancelstate(state, NULL); \ + DECR_CANCEL_DISABLE(); } while (0) +#else /* !CANCEL_SAFE */ +# define DISABLE_CANCEL(state) (void)0 +# define RESTORE_CANCEL(state) (void)0 +# define ASSERT_CANCEL_DISABLED() (void)0 +#endif /* !CANCEL_SAFE */ + +#endif /* GC_PRIVATE_H */ diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h new file mode 100644 index 0000000..ffbdc14 --- /dev/null +++ b/include/private/gcconfig.h @@ -0,0 +1,3339 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 2000-2004 Hewlett-Packard Development Company, L.P. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* + * This header is private to the gc. It is almost always included from + * gc_priv.h. However it is possible to include it by itself if just the + * configuration macros are needed. In that + * case, a few declarations relying on types declared in gc_priv.h will be + * omitted. + */ + +#ifndef GCCONFIG_H +#define GCCONFIG_H + +# ifndef GC_PRIVATE_H + /* Fake ptr_t declaration, just to avoid compilation errors. */ + /* This avoids many instances if "ifndef GC_PRIVATE_H" below. */ + typedef struct GC_undefined_struct * ptr_t; +# include /* For size_t etc. */ +# endif + +#ifdef LINT2 + /* A macro (based on a tricky expression) to prevent false warnings */ + /* like "Array compared to 0", "Comparison of identical expressions", */ + /* "Untrusted loop bound" output by some static code analysis tools. */ + /* The argument should not be a literal value. The result is */ + /* converted to word type. (Actually, GC_word is used instead of */ + /* word type as the latter might be undefined at the place of use.) */ +# define COVERT_DATAFLOW(w) (~(GC_word)(w)^(~(GC_word)0)) +#else +# define COVERT_DATAFLOW(w) ((GC_word)(w)) +#endif + +/* Machine dependent parameters. Some tuning parameters can be found */ +/* near the top of gc_private.h. */ + +/* Machine specific parts contributed by various people. See README file. */ + +#if defined(__ANDROID__) && !defined(PLATFORM_ANDROID) + /* __ANDROID__ macro is defined by Android NDK gcc. */ +# define PLATFORM_ANDROID 1 +#endif + +#if defined(__SYMBIAN32__) && !defined(SYMBIAN) +# define SYMBIAN +# ifdef __WINS__ +# pragma data_seg(".data2") +# endif +#endif + +/* First a unified test for Linux: */ +# if (defined(linux) || defined(__linux__) || defined(PLATFORM_ANDROID)) \ + && !defined(LINUX) && !defined(__native_client__) +# define LINUX +# endif + +/* And one for QNX: */ +# if defined(__QNX__) +# define I386 +# define OS_TYPE "QNX" +# define SA_RESTART 0 +# define HEURISTIC1 + extern char etext[]; + extern int _end[]; +# define DATASTART ((ptr_t)(etext)) +# define DATAEND ((ptr_t)(_end)) +# define mach_type_known +# endif + +/* And one for NetBSD: */ +# if defined(__NetBSD__) +# define NETBSD +# endif + +/* And one for OpenBSD: */ +# if defined(__OpenBSD__) +# define OPENBSD +# endif + +/* And one for FreeBSD: */ +# if (defined(__FreeBSD__) || defined(__DragonFly__) \ + || defined(__FreeBSD_kernel__)) && !defined(FREEBSD) +# define FREEBSD +# endif + +/* And one for Darwin: */ +# if defined(macosx) || (defined(__APPLE__) && defined(__MACH__)) +# define DARWIN +# include +# endif + +/* Determine the machine type: */ +# if defined(__native_client__) +# define NACL +# if !defined(__portable_native_client__) && !defined(__arm__) +# define I386 +# define mach_type_known +# else + /* Here we will rely upon arch-specific defines. */ +# endif +# endif +# if defined(__aarch64__) +# define AARCH64 +# if !defined(LINUX) && !defined(DARWIN) && !defined(FREEBSD) +# define NOSYS +# define mach_type_known +# endif +# endif +# if defined(__arm) || defined(__arm__) || defined(__thumb__) +# define ARM32 +# if defined(NACL) +# define mach_type_known +# elif !defined(LINUX) && !defined(NETBSD) && !defined(FREEBSD) \ + && !defined(OPENBSD) && !defined(DARWIN) \ + && !defined(_WIN32) && !defined(__CEGCC__) && !defined(SYMBIAN) +# define NOSYS +# define mach_type_known +# endif +# endif +# if defined(sun) && defined(mc68000) && !defined(CPPCHECK) +# error SUNOS4 no longer supported +# endif +# if defined(hp9000s300) && !defined(CPPCHECK) +# error M68K based HP machines no longer supported. +# endif +# if defined(OPENBSD) && defined(m68k) + /* FIXME: Should we remove this case? */ +# define M68K +# define mach_type_known +# endif +# if defined(OPENBSD) && defined(__sparc__) +# define SPARC +# define mach_type_known +# endif +# if defined(OPENBSD) && defined(__arm__) +# define ARM32 +# define mach_type_known +# endif +# if defined(OPENBSD) && defined(__sh__) +# define SH +# define mach_type_known +# endif +# if defined(NETBSD) && (defined(m68k) || defined(__m68k__)) +# define M68K +# define mach_type_known +# endif +# if defined(NETBSD) && defined(__powerpc__) +# define POWERPC +# define mach_type_known +# endif +# if defined(NETBSD) && (defined(__arm32__) || defined(__arm__)) +# define ARM32 +# define mach_type_known +# endif +# if defined(NETBSD) && defined(__sh__) +# define SH +# define mach_type_known +# endif +# if defined(vax) || defined(__vax__) +# define VAX +# ifdef ultrix +# define ULTRIX +# else +# define BSD +# endif +# define mach_type_known +# endif +# if defined(__NetBSD__) && defined(__vax__) +# define VAX +# define mach_type_known +# endif +# if defined(mips) || defined(__mips) || defined(_mips) +# define MIPS +# if defined(nec_ews) || defined(_nec_ews) +# define EWS4800 +# endif +# if !defined(LINUX) && !defined(EWS4800) && !defined(NETBSD) \ + && !defined(OPENBSD) +# if defined(ultrix) || defined(__ultrix) +# define ULTRIX +# else +# define IRIX5 /* or IRIX 6.X */ +# endif +# endif /* !LINUX */ +# if defined(__NetBSD__) && defined(__MIPSEL__) +# undef ULTRIX +# endif +# define mach_type_known +# endif +# if defined(__NIOS2__) || defined(__NIOS2) || defined(__nios2__) +# define NIOS2 /* Altera NIOS2 */ +# define mach_type_known +# endif +# if defined(__or1k__) +# define OR1K /* OpenRISC/or1k */ +# define mach_type_known +# endif +# if defined(DGUX) && (defined(i386) || defined(__i386__)) +# define I386 +# ifndef _USING_DGUX +# define _USING_DGUX +# endif +# define mach_type_known +# endif +# if defined(sequent) && (defined(i386) || defined(__i386__)) +# define I386 +# define SEQUENT +# define mach_type_known +# endif +# if (defined(sun) || defined(__sun)) && (defined(i386) || defined(__i386__)) +# define I386 +# define SOLARIS +# define mach_type_known +# endif +# if (defined(sun) || defined(__sun)) && defined(__amd64) +# define X86_64 +# define SOLARIS +# define mach_type_known +# endif +# if (defined(__OS2__) || defined(__EMX__)) && defined(__32BIT__) +# define I386 +# define OS2 +# define mach_type_known +# endif +# if defined(ibm032) && !defined(CPPCHECK) +# error IBM PC/RT no longer supported. +# endif +# if (defined(sun) || defined(__sun)) && (defined(sparc) || defined(__sparc)) +# define SPARC + /* Test for SunOS 5.x */ +# include +# define SOLARIS +# define mach_type_known +# elif defined(sparc) && defined(unix) && !defined(sun) && !defined(linux) \ + && !defined(__OpenBSD__) && !defined(__NetBSD__) \ + && !defined(__FreeBSD__) && !defined(__DragonFly__) +# define SPARC +# define DRSNX +# define mach_type_known +# endif +# if defined(_IBMR2) +# define POWERPC +# define AIX +# define mach_type_known +# endif +# if defined(__NetBSD__) && defined(__sparc__) +# define SPARC +# define mach_type_known +# endif +# if defined(_M_XENIX) && defined(_M_SYSV) && defined(_M_I386) + /* The above test may need refinement */ +# define I386 +# if defined(_SCO_ELF) +# define SCO_ELF +# else +# define SCO +# endif +# define mach_type_known +# endif +# if defined(_AUX_SOURCE) && !defined(CPPCHECK) +# error A/UX no longer supported +# endif +# if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) \ + || defined(hppa) || defined(__hppa__) +# define HP_PA +# if !defined(LINUX) && !defined(HPUX) && !defined(OPENBSD) +# define HPUX +# endif +# define mach_type_known +# endif +# if defined(__ia64) && (defined(_HPUX_SOURCE) || defined(__HP_aCC)) +# define IA64 +# ifndef HPUX +# define HPUX +# endif +# define mach_type_known +# endif +# if defined(__BEOS__) && defined(_X86_) +# define I386 +# define BEOS +# define mach_type_known +# endif +# if defined(OPENBSD) && defined(__amd64__) +# define X86_64 +# define mach_type_known +# endif +# if defined(LINUX) && (defined(i386) || defined(__i386__)) +# define I386 +# define mach_type_known +# endif +# if defined(LINUX) && defined(__x86_64__) +# define X86_64 +# define mach_type_known +# endif +# if defined(LINUX) && (defined(__ia64__) || defined(__ia64)) +# define IA64 +# define mach_type_known +# endif +# if defined(LINUX) && defined(__aarch64__) +# define AARCH64 +# define mach_type_known +# endif +# if defined(LINUX) && (defined(__arm) || defined(__arm__)) +# define ARM32 +# define mach_type_known +# endif +# if defined(LINUX) && defined(__cris__) +# ifndef CRIS +# define CRIS +# endif +# define mach_type_known +# endif +# if defined(LINUX) && (defined(powerpc) || defined(__powerpc__) \ + || defined(powerpc64) || defined(__powerpc64__)) +# define POWERPC +# define mach_type_known +# endif +# if defined(LINUX) && defined(__mc68000__) +# define M68K +# define mach_type_known +# endif +# if defined(LINUX) && (defined(sparc) || defined(__sparc__)) +# define SPARC +# define mach_type_known +# endif +# if defined(LINUX) && defined(__sh__) +# define SH +# define mach_type_known +# endif +# if defined(LINUX) && defined(__avr32__) +# define AVR32 +# define mach_type_known +# endif +# if defined(LINUX) && defined(__m32r__) +# define M32R +# define mach_type_known +# endif +# if defined(__alpha) || defined(__alpha__) +# define ALPHA +# if !defined(LINUX) && !defined(NETBSD) && !defined(OPENBSD) \ + && !defined(FREEBSD) +# define OSF1 /* a.k.a Digital Unix */ +# endif +# define mach_type_known +# endif +# if defined(_AMIGA) && !defined(AMIGA) +# define AMIGA +# endif +# ifdef AMIGA +# define M68K +# define mach_type_known +# endif +# if defined(THINK_C) \ + || (defined(__MWERKS__) && !defined(__powerc) && !defined(SYMBIAN)) +# define M68K +# define MACOS +# define mach_type_known +# endif +# if defined(__MWERKS__) && defined(__powerc) && !defined(__MACH__) \ + && !defined(SYMBIAN) +# define POWERPC +# define MACOS +# define mach_type_known +# endif +# if defined(__OpenBSD__) && defined(__powerpc__) +# define POWERPC +# define OPENBSD +# define mach_type_known +# endif +# if defined(DARWIN) +# if defined(__ppc__) || defined(__ppc64__) +# define POWERPC +# define mach_type_known +# elif defined(__x86_64__) || defined(__x86_64) +# define X86_64 +# define mach_type_known +# elif defined(__i386__) +# define I386 +# define mach_type_known +# elif defined(__arm__) +# define ARM32 +# define mach_type_known +# elif defined(__aarch64__) +# define AARCH64 +# define mach_type_known +# endif +# endif +# if defined(__rtems__) && (defined(i386) || defined(__i386__)) +# define I386 +# define RTEMS +# define mach_type_known +# endif +# if defined(NeXT) && defined(mc68000) +# define M68K +# define NEXT +# define mach_type_known +# endif +# if defined(NeXT) && (defined(i386) || defined(__i386__)) +# define I386 +# define NEXT +# define mach_type_known +# endif +# if defined(__OpenBSD__) && (defined(i386) || defined(__i386__)) +# define I386 +# define OPENBSD +# define mach_type_known +# endif +# if defined(__NetBSD__) && (defined(i386) || defined(__i386__)) +# define I386 +# define mach_type_known +# endif +# if defined(__NetBSD__) && defined(__x86_64__) +# define X86_64 +# define mach_type_known +# endif +# if defined(FREEBSD) && (defined(i386) || defined(__i386__)) +# define I386 +# define mach_type_known +# endif +# if defined(FREEBSD) && (defined(__amd64__) || defined(__x86_64__)) +# define X86_64 +# define mach_type_known +# endif +# if defined(FREEBSD) && defined(__sparc__) +# define SPARC +# define mach_type_known +# endif +# if defined(FREEBSD) && (defined(powerpc) || defined(__powerpc__)) +# define POWERPC +# define mach_type_known +# endif +# if defined(FREEBSD) && defined(__arm__) +# define ARM32 +# define mach_type_known +# endif +# if defined(FREEBSD) && defined(__aarch64__) +# define AARCH64 +# define mach_type_known +# endif +# if defined(FREEBSD) && (defined(mips) || defined(__mips) || defined(_mips)) +# define MIPS +# define mach_type_known +# endif +# if defined(bsdi) && (defined(i386) || defined(__i386__)) +# define I386 +# define BSDI +# define mach_type_known +# endif +# if !defined(mach_type_known) && defined(__386BSD__) +# define I386 +# define THREE86BSD +# define mach_type_known +# endif +# if defined(_CX_UX) && defined(_M88K) +# define M88K +# define CX_UX +# define mach_type_known +# endif +# if defined(DGUX) && defined(m88k) +# define M88K + /* DGUX defined */ +# define mach_type_known +# endif +# if defined(_WIN32_WCE) || defined(__CEGCC__) || defined(__MINGW32CE__) + /* SH3, SH4, MIPS already defined for corresponding architectures */ +# if defined(SH3) || defined(SH4) +# define SH +# endif +# if defined(x86) || defined(__i386__) +# define I386 +# endif +# if defined(_M_ARM) || defined(ARM) || defined(_ARM_) +# define ARM32 +# endif +# define MSWINCE +# define mach_type_known +# else +# if ((defined(_MSDOS) || defined(_MSC_VER)) && (_M_IX86 >= 300)) \ + || (defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__CYGWIN__) \ + && !defined(SYMBIAN)) +# if defined(__LP64__) || defined(_WIN64) +# define X86_64 +# else +# define I386 +# endif +# define MSWIN32 /* or Win64 */ +# define mach_type_known +# endif +# if defined(_MSC_VER) && defined(_M_IA64) +# define IA64 +# define MSWIN32 /* Really win64, but we don't treat 64-bit */ + /* variants as a different platform. */ +# endif +# endif +# if defined(__DJGPP__) +# define I386 +# ifndef DJGPP +# define DJGPP /* MSDOS running the DJGPP port of GCC */ +# endif +# define mach_type_known +# endif +# if defined(__CYGWIN32__) || defined(__CYGWIN__) +# if defined(__LP64__) +# define X86_64 +# else +# define I386 +# endif +# define CYGWIN32 +# define mach_type_known +# endif +# if defined(__MINGW32__) && !defined(mach_type_known) +# define I386 +# define MSWIN32 +# define mach_type_known +# endif +# if defined(__BORLANDC__) +# define I386 +# define MSWIN32 +# define mach_type_known +# endif +# if defined(_UTS) && !defined(mach_type_known) +# define S370 +# define UTS4 +# define mach_type_known +# endif +# if defined(__pj__) && !defined(CPPCHECK) +# error PicoJava no longer supported + /* The implementation had problems, and I haven't heard of users */ + /* in ages. If you want it resurrected, let me know. */ +# endif +# if defined(__embedded__) && defined(PPC) +# define POWERPC +# define NOSYS +# define mach_type_known +# endif + +# if defined(__WATCOMC__) && defined(__386__) +# define I386 +# if !defined(OS2) && !defined(MSWIN32) && !defined(DOS4GW) +# if defined(__OS2__) +# define OS2 +# else +# if defined(__WINDOWS_386__) || defined(__NT__) +# define MSWIN32 +# else +# define DOS4GW +# endif +# endif +# endif +# define mach_type_known +# endif +# if defined(__s390__) && defined(LINUX) +# define S390 +# define mach_type_known +# endif +# if defined(__GNU__) +# if defined(__i386__) +/* The Debian Hurd running on generic PC */ +# define HURD +# define I386 +# define mach_type_known +# endif +# endif +# if defined(__TANDEM) + /* Nonstop S-series */ + /* FIXME: Should recognize Integrity series? */ +# define MIPS +# define NONSTOP +# define mach_type_known +# endif +# if defined(__hexagon__) && defined(LINUX) +# define HEXAGON +# define mach_type_known +# endif +# if defined(__tile__) && defined(LINUX) +# ifdef __tilegx__ +# define TILEGX +# else +# define TILEPRO +# endif +# define mach_type_known +# endif + +# if defined(SYMBIAN) +# define mach_type_known +# endif + +# if defined(__EMSCRIPTEN__) +# define I386 +# define mach_type_known +# endif + +/* Feel free to add more clauses here */ + +/* Or manually define the machine type here. A machine type is */ +/* characterized by the architecture. Some */ +/* machine types are further subdivided by OS. */ +/* Macros such as LINUX, FREEBSD, etc. distinguish them. */ +/* SYSV on an M68K actually means A/UX. */ +/* The distinction in these cases is usually the stack starting address */ +# if !defined(mach_type_known) && !defined(CPPCHECK) +# error "The collector has not been ported to this machine/OS combination." +# endif + /* Mapping is: M68K ==> Motorola 680X0 */ + /* (NEXT, and SYSV (A/UX), */ + /* MACOS and AMIGA variants) */ + /* I386 ==> Intel 386 */ + /* (SEQUENT, OS2, SCO, LINUX, NETBSD, */ + /* FREEBSD, THREE86BSD, MSWIN32, */ + /* BSDI, SOLARIS, NEXT and others) */ + /* NS32K ==> Encore Multimax */ + /* MIPS ==> R2000 through R14K */ + /* (many variants) */ + /* VAX ==> DEC VAX */ + /* (BSD, ULTRIX variants) */ + /* HP_PA ==> HP9000/700 & /800 */ + /* HP/UX, LINUX */ + /* SPARC ==> SPARC v7/v8/v9 */ + /* (SOLARIS, LINUX, DRSNX variants) */ + /* ALPHA ==> DEC Alpha */ + /* (OSF1 and LINUX variants) */ + /* M88K ==> Motorola 88XX0 */ + /* (CX_UX and DGUX) */ + /* S370 ==> 370-like machine */ + /* running Amdahl UTS4 */ + /* S390 ==> 390-like machine */ + /* running LINUX */ + /* AARCH64 ==> ARM AArch64 */ + /* ARM32 ==> Intel StrongARM */ + /* IA64 ==> Intel IPF */ + /* (e.g. Itanium) */ + /* (LINUX and HPUX) */ + /* SH ==> Hitachi SuperH */ + /* (LINUX & MSWINCE) */ + /* X86_64 ==> AMD x86-64 */ + /* POWERPC ==> IBM/Apple PowerPC */ + /* (MACOS(<=9),DARWIN(incl.MACOSX),*/ + /* LINUX, NETBSD, AIX, NOSYS */ + /* variants) */ + /* Handles 32 and 64-bit variants. */ + /* CRIS ==> Axis Etrax */ + /* M32R ==> Renesas M32R */ + /* HEXAGON ==> Qualcomm Hexagon */ + /* TILEPRO ==> Tilera TILEPro */ + /* TILEGX ==> Tilera TILE-Gx */ + + +/* + * For each architecture and OS, the following need to be defined: + * + * CPP_WORDSZ is a simple integer constant representing the word size. + * in bits. We assume byte addressability, where a byte has 8 bits. + * We also assume CPP_WORDSZ is either 32 or 64. + * (We care about the length of pointers, not hardware + * bus widths. Thus a 64 bit processor with a C compiler that uses + * 32 bit pointers should use CPP_WORDSZ of 32, not 64. Default is 32.) + * + * MACH_TYPE is a string representation of the machine type. + * OS_TYPE is analogous for the OS. + * + * ALIGNMENT is the largest N, such that + * all pointer are guaranteed to be aligned on N byte boundaries. + * defining it to be 1 will always work, but perform poorly. + * + * DATASTART is the beginning of the data segment. + * On some platforms SEARCH_FOR_DATA_START is defined. + * SEARCH_FOR_DATASTART will cause GC_data_start to + * be set to an address determined by accessing data backwards from _end + * until an unmapped page is found. DATASTART will be defined to be + * GC_data_start. + * On UNIX-like systems, the collector will scan the area between DATASTART + * and DATAEND for root pointers. + * + * DATAEND, if not "end", where "end" is defined as "extern int end[]". + * RTH suggests gaining access to linker script synth'd values with + * this idiom instead of "&end", where "end" is defined as "extern int end". + * Otherwise, "GCC will assume these are in .sdata/.sbss" and it will, e.g., + * cause failures on alpha*-*-* with -msmall-data or -fpic or mips-*-* + * without any special options. + * + * STACKBOTTOM is the cool end of the stack, which is usually the + * highest address in the stack. + * Under PCR or OS/2, we have other ways of finding thread stacks. + * For each machine, the following should: + * 1) define STACK_GROWS_UP if the stack grows toward higher addresses, and + * 2) define exactly one of + * STACKBOTTOM (should be defined to be an expression) + * LINUX_STACKBOTTOM + * HEURISTIC1 + * HEURISTIC2 + * If STACKBOTTOM is defined, then its value will be used directly as the + * stack base. If LINUX_STACKBOTTOM is defined, then it will be determined + * with a method appropriate for most Linux systems. Currently we look + * first for __libc_stack_end (currently only if USE_LIBC_PRIVATES is + * defined), and if that fails read it from /proc. (If USE_LIBC_PRIVATES + * is not defined and NO_PROC_STAT is defined, we revert to HEURISTIC2.) + * If either of the last two macros are defined, then STACKBOTTOM is computed + * during collector startup using one of the following two heuristics: + * HEURISTIC1: Take an address inside GC_init's frame, and round it up to + * the next multiple of STACK_GRAN. + * HEURISTIC2: Take an address inside GC_init's frame, increment it repeatedly + * in small steps (decrement if STACK_GROWS_UP), and read the value + * at each location. Remember the value when the first + * Segmentation violation or Bus error is signaled. Round that + * to the nearest plausible page boundary, and use that instead + * of STACKBOTTOM. + * + * Gustavo Rodriguez-Rivera points out that on most (all?) Unix machines, + * the value of environ is a pointer that can serve as STACKBOTTOM. + * I expect that HEURISTIC2 can be replaced by this approach, which + * interferes far less with debugging. However it has the disadvantage + * that it's confused by a putenv call before the collector is initialized. + * This could be dealt with by intercepting putenv ... + * + * If no expression for STACKBOTTOM can be found, and neither of the above + * heuristics are usable, the collector can still be used with all of the above + * undefined, provided one of the following is done: + * 1) GC_mark_roots can be changed to somehow mark from the correct stack(s) + * without reference to STACKBOTTOM. This is appropriate for use in + * conjunction with thread packages, since there will be multiple stacks. + * (Allocating thread stacks in the heap, and treating them as ordinary + * heap data objects is also possible as a last resort. However, this is + * likely to introduce significant amounts of excess storage retention + * unless the dead parts of the thread stacks are periodically cleared.) + * 2) Client code may set GC_stackbottom before calling any GC_ routines. + * If the author of the client code controls the main program, this is + * easily accomplished by introducing a new main program, setting + * GC_stackbottom to the address of a local variable, and then calling + * the original main program. The new main program would read something + * like (provided real_main() is not inlined by the compiler): + * + * #include "gc.h" + * + * main(argc, argv, envp) + * int argc; + * char **argv, **envp; + * { + * volatile int dummy; + * + * GC_stackbottom = (ptr_t)(&dummy); + * return(real_main(argc, argv, envp)); + * } + * + * + * Each architecture may also define the style of virtual dirty bit + * implementation to be used: + * MPROTECT_VDB: Write protect the heap and catch faults. + * GWW_VDB: Use win32 GetWriteWatch primitive. + * PROC_VDB: Use the SVR4 /proc primitives to read dirty bits. + * + * The first and second one may be combined, in which case a runtime + * selection will be made, based on GetWriteWatch availability. + * + * An architecture may define DYNAMIC_LOADING if dyn_load.c + * defined GC_register_dynamic_libraries() for the architecture. + * + * An architecture may define PREFETCH(x) to preload the cache with *x. + * This defaults to GCC built-in operation (or a no-op for other compilers). + * + * GC_PREFETCH_FOR_WRITE(x) is used if *x is about to be written. + * + * An architecture may also define CLEAR_DOUBLE(x) to be a fast way to + * clear the two words at GC_malloc-aligned address x. By default, + * word stores of 0 are used instead. + * + * HEAP_START may be defined as the initial address hint for mmap-based + * allocation. + */ + +/* If we are using a recent version of gcc, we can use */ +/* __builtin_unwind_init() to push the relevant registers onto the stack. */ +# if defined(__GNUC__) && ((__GNUC__ >= 3) \ + || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)) \ + && !defined(__INTEL_COMPILER) && !defined(__PATHCC__) \ + && !defined(__FUJITSU) /* for FX10 system */ \ + && !(defined(POWERPC) && defined(DARWIN)) /* for MacOS X 10.3.9 */ \ + && !defined(RTEMS) \ + && !defined(__clang__) /* since no-op in clang (3.0) */ +# define HAVE_BUILTIN_UNWIND_INIT +# endif + +# ifdef SYMBIAN +# define MACH_TYPE "SYMBIAN" +# define OS_TYPE "SYMBIAN" +# define CPP_WORDSZ 32 +# define ALIGNMENT 4 +# define DATASTART (ptr_t)ALIGNMENT /* cannot be null */ +# define DATAEND (ptr_t)ALIGNMENT +# endif + +# ifdef __EMSCRIPTEN__ +# define OS_TYPE "EMSCRIPTEN" +# define CPP_WORDSZ 32 +# define ALIGNMENT 4 +# define DATASTART (ptr_t)ALIGNMENT +# define DATAEND (ptr_t)ALIGNMENT +# define STACK_NOT_SCANNED +# endif + +# define STACK_GRAN 0x1000000 +# ifdef M68K +# define MACH_TYPE "M68K" +# define ALIGNMENT 2 +# ifdef OPENBSD + /* FIXME: Should we remove this case? */ +# define OS_TYPE "OPENBSD" +# define HEURISTIC2 +# ifdef __ELF__ + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +# define DYNAMIC_LOADING +# else + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) +# endif +# endif +# ifdef NETBSD +# define OS_TYPE "NETBSD" +# define HEURISTIC2 +# ifdef __ELF__ + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +# define DYNAMIC_LOADING +# else + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) +# endif +# endif +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# define MPROTECT_VDB +# ifdef __ELF__ +# define DYNAMIC_LOADING +# include +# if defined(__GLIBC__) && __GLIBC__ >= 2 +# define SEARCH_FOR_DATA_START +# else /* !GLIBC2 */ +# ifdef PLATFORM_ANDROID +# define __environ environ +# endif + extern char **__environ; +# define DATASTART ((ptr_t)(&__environ)) + /* hideous kludge: __environ is the first */ + /* word in crt0.o, and delimits the start */ + /* of the data segment, no matter which */ + /* ld options were passed through. */ + /* We could use _etext instead, but that */ + /* would include .rodata, which may */ + /* contain large read-only data tables */ + /* that we'd rather not scan. */ +# endif /* !GLIBC2 */ + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# else + extern int etext[]; +# define DATASTART ((ptr_t)((((word)(etext)) + 0xfff) & ~0xfff)) +# endif +# endif +# ifdef AMIGA +# define OS_TYPE "AMIGA" + /* STACKBOTTOM and DATASTART handled specially */ + /* in os_dep.c */ +# define DATAEND /* not needed */ +# define GETPAGESIZE() 4096 +# endif +# ifdef MACOS +# ifndef __LOWMEM__ +# include +# endif +# define OS_TYPE "MACOS" + /* see os_dep.c for details of global data segments. */ +# define STACKBOTTOM ((ptr_t)LMGetCurStackBase()) +# define DATAEND /* not needed */ +# define GETPAGESIZE() 4096 +# endif +# ifdef NEXT +# define OS_TYPE "NEXT" +# define DATASTART ((ptr_t)get_etext()) +# define DATASTART_IS_FUNC +# define STACKBOTTOM ((ptr_t)0x4000000) +# define DATAEND /* not needed */ +# endif +# endif + +# if defined(POWERPC) +# define MACH_TYPE "POWERPC" +# ifdef MACOS +# define ALIGNMENT 2 /* Still necessary? Could it be 4? */ +# ifndef __LOWMEM__ +# include +# endif +# define OS_TYPE "MACOS" + /* see os_dep.c for details of global data segments. */ +# define STACKBOTTOM ((ptr_t)LMGetCurStackBase()) +# define DATAEND /* not needed */ +# endif +# ifdef LINUX +# if defined(__powerpc64__) +# define ALIGNMENT 8 +# define CPP_WORDSZ 64 +# ifndef HBLKSIZE +# define HBLKSIZE 4096 +# endif +# else +# define ALIGNMENT 4 +# endif +# define OS_TYPE "LINUX" + /* HEURISTIC1 has been reliably reported to fail for a 32-bit */ + /* executable on a 64 bit kernel. */ +# if defined(__bg__) + /* The Linux Compute Node Kernel (used on BlueGene systems) */ + /* does not support LINUX_STACKBOTTOM way. */ +# define HEURISTIC2 +# define NO_PTHREAD_GETATTR_NP +# else +# define LINUX_STACKBOTTOM +# endif +# define DYNAMIC_LOADING +# define SEARCH_FOR_DATA_START + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# endif +# ifdef DARWIN +# define OS_TYPE "DARWIN" +# define DYNAMIC_LOADING +# if defined(__ppc64__) +# define ALIGNMENT 8 +# define CPP_WORDSZ 64 +# define STACKBOTTOM ((ptr_t)0x7fff5fc00000) +# define CACHE_LINE_SIZE 64 +# ifndef HBLKSIZE +# define HBLKSIZE 4096 +# endif +# else +# define ALIGNMENT 4 +# define STACKBOTTOM ((ptr_t)0xc0000000) +# endif + /* XXX: see get_end(3), get_etext() and get_end() should not be used. */ + /* These aren't used when dyld support is enabled (it is by default). */ +# define DATASTART ((ptr_t)get_etext()) +# define DATAEND ((ptr_t)get_end()) +# ifndef USE_MMAP +# define USE_MMAP +# endif +# define USE_MMAP_ANON +# define MPROTECT_VDB +# include +# define GETPAGESIZE() (unsigned)getpagesize() +# if defined(USE_PPC_PREFETCH) && defined(__GNUC__) + /* The performance impact of prefetches is untested */ +# define PREFETCH(x) \ + __asm__ __volatile__ ("dcbt 0,%0" : : "r" ((const void *) (x))) +# define GC_PREFETCH_FOR_WRITE(x) \ + __asm__ __volatile__ ("dcbtst 0,%0" : : "r" ((const void *) (x))) +# endif + /* There seems to be some issues with trylock hanging on darwin. */ + /* This should be looked into some more. */ +# define NO_PTHREAD_TRYLOCK +# endif +# ifdef OPENBSD +# define OS_TYPE "OPENBSD" +# define ALIGNMENT 4 +# ifndef GC_OPENBSD_THREADS +# include +# include + /* USRSTACK is defined in but that is */ + /* protected by _KERNEL in file. */ +# ifdef USRSTACK +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +# endif + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) + extern int _end[]; +# define DATAEND ((ptr_t)(&_end)) +# define DYNAMIC_LOADING +# endif +# ifdef FREEBSD +# if defined(__powerpc64__) +# define ALIGNMENT 8 +# define CPP_WORDSZ 64 +# ifndef HBLKSIZE +# define HBLKSIZE 4096 +# endif +# else +# define ALIGNMENT 4 +# endif +# define OS_TYPE "FREEBSD" +# ifndef GC_FREEBSD_THREADS +# define MPROTECT_VDB +# endif +# define SIG_SUSPEND SIGUSR1 +# define SIG_THR_RESTART SIGUSR2 +# define FREEBSD_STACKBOTTOM +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif + extern char etext[]; +# define DATASTART GC_FreeBSDGetDataStart(0x1000, (ptr_t)etext) +# define DATASTART_USES_BSDGETDATASTART +# endif +# ifdef NETBSD +# define ALIGNMENT 4 +# define OS_TYPE "NETBSD" +# define HEURISTIC2 + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +# define DYNAMIC_LOADING +# endif +# ifdef SN_TARGET_PS3 +# define NO_GETENV +# define CPP_WORDSZ 32 +# define ALIGNMENT 4 + extern int _end[]; + extern int __bss_start; +# define DATASTART ((ptr_t)(__bss_start)) +# define DATAEND ((ptr_t)(_end)) +# define STACKBOTTOM ((ptr_t)ps3_get_stack_bottom()) +# define NO_PTHREAD_TRYLOCK + /* Current GC LOCK() implementation for PS3 explicitly */ + /* use pthread_mutex_lock for some reason. */ +# endif +# ifdef AIX +# define OS_TYPE "AIX" +# undef ALIGNMENT /* in case it's defined */ +# undef IA64 + /* DOB: some AIX installs stupidly define IA64 in */ + /* /usr/include/sys/systemcfg.h */ +# ifdef __64BIT__ +# define ALIGNMENT 8 +# define CPP_WORDSZ 64 +# define STACKBOTTOM ((ptr_t)0x1000000000000000) +# else +# define ALIGNMENT 4 +# define CPP_WORDSZ 32 +# define STACKBOTTOM ((ptr_t)((ulong)&errno)) +# endif +# ifndef USE_MMAP +# define USE_MMAP +# endif +# define USE_MMAP_ANON + /* From AIX linker man page: + _text Specifies the first location of the program. + _etext Specifies the first location after the program. + _data Specifies the first location of the data. + _edata Specifies the first location after the initialized data + _end or end Specifies the first location after all data. + */ + extern int _data[], _end[]; +# define DATASTART ((ptr_t)((ulong)_data)) +# define DATAEND ((ptr_t)((ulong)_end)) + extern int errno; +# define DYNAMIC_LOADING + /* For really old versions of AIX, this may have to be removed. */ +# endif + +# ifdef NOSYS +# define ALIGNMENT 4 +# define OS_TYPE "NOSYS" + extern void __end[], __dso_handle[]; +# define DATASTART ((ptr_t)__dso_handle) /* OK, that's ugly. */ +# define DATAEND ((ptr_t)(__end)) + /* Stack starts at 0xE0000000 for the simulator. */ +# undef STACK_GRAN +# define STACK_GRAN 0x10000000 +# define HEURISTIC1 +# endif +# endif + +# ifdef NACL +# define OS_TYPE "NACL" +# if defined(__GLIBC__) +# define DYNAMIC_LOADING +# endif +# define DATASTART ((ptr_t)0x10020000) + extern int _end[]; +# define DATAEND ((ptr_t)_end) +# undef STACK_GRAN +# define STACK_GRAN 0x10000 +# define HEURISTIC1 +# define NO_PTHREAD_GETATTR_NP +# define USE_MMAP +# define USE_MUNMAP +# define USE_MMAP_ANON +# undef USE_MMAP_FIXED +# define GETPAGESIZE() 65536 +# define MAX_NACL_GC_THREADS 1024 +# endif + +# ifdef VAX +# define MACH_TYPE "VAX" +# define ALIGNMENT 4 /* Pointers are longword aligned by 4.2 C compiler */ + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) +# ifdef BSD +# define OS_TYPE "BSD" +# define HEURISTIC1 + /* HEURISTIC2 may be OK, but it's hard to test. */ +# endif +# ifdef ULTRIX +# define OS_TYPE "ULTRIX" +# define STACKBOTTOM ((ptr_t)0x7fffc800) +# endif +# endif + +# ifdef SPARC +# define MACH_TYPE "SPARC" +# if defined(__arch64__) || defined(__sparcv9) +# define ALIGNMENT 8 +# define CPP_WORDSZ 64 +# define ELF_CLASS ELFCLASS64 +# else +# define ALIGNMENT 4 /* Required by hardware */ +# define CPP_WORDSZ 32 +# endif + /* Don't define USE_ASM_PUSH_REGS. We do use an asm helper, but */ + /* not to push the registers on the mark stack. */ +# ifdef SOLARIS +# define OS_TYPE "SOLARIS" + extern int _etext[]; + extern int _end[]; + ptr_t GC_SysVGetDataStart(size_t, ptr_t); +# define DATASTART GC_SysVGetDataStart(0x10000, (ptr_t)_etext) +# define DATASTART_IS_FUNC +# define DATAEND ((ptr_t)(_end)) +# if !defined(USE_MMAP) && defined(REDIRECT_MALLOC) +# define USE_MMAP + /* Otherwise we now use calloc. Mmap may result in the */ + /* heap interleaved with thread stacks, which can result in */ + /* excessive blacklisting. Sbrk is unusable since it */ + /* doesn't interact correctly with the system malloc. */ +# endif +# ifdef USE_MMAP +# define HEAP_START (ptr_t)0x40000000 +# else +# define HEAP_START DATAEND +# endif +# define PROC_VDB +/* HEURISTIC1 reportedly no longer works under 2.7. */ +/* HEURISTIC2 probably works, but this appears to be preferable. */ +/* Apparently USRSTACK is defined to be USERLIMIT, but in some */ +/* installations that's undefined. We work around this with a */ +/* gross hack: */ +# include +# ifdef USERLIMIT + /* This should work everywhere, but doesn't. */ +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +# include +# define GETPAGESIZE() (unsigned)sysconf(_SC_PAGESIZE) + /* getpagesize() appeared to be missing from at least one */ + /* Solaris 5.4 installation. Weird. */ +# define DYNAMIC_LOADING +# endif +# ifdef DRSNX +# define OS_TYPE "DRSNX" + extern int etext[]; + ptr_t GC_SysVGetDataStart(size_t, ptr_t); +# define DATASTART GC_SysVGetDataStart(0x10000, (ptr_t)etext) +# define DATASTART_IS_FUNC +# define MPROTECT_VDB +# define STACKBOTTOM ((ptr_t)0xdfff0000) +# define DYNAMIC_LOADING +# endif +# ifdef LINUX +# define OS_TYPE "LINUX" +# ifdef __ELF__ +# define DYNAMIC_LOADING +# else +# error --> Linux SPARC a.out not supported +# endif + extern int _end[]; + extern int _etext[]; +# define DATAEND ((ptr_t)(_end)) +# define SVR4 + ptr_t GC_SysVGetDataStart(size_t, ptr_t); +# ifdef __arch64__ +# define DATASTART GC_SysVGetDataStart(0x100000, (ptr_t)_etext) +# else +# define DATASTART GC_SysVGetDataStart(0x10000, (ptr_t)_etext) +# endif +# define DATASTART_IS_FUNC +# define LINUX_STACKBOTTOM +# endif +# ifdef OPENBSD +# define OS_TYPE "OPENBSD" +# ifndef GC_OPENBSD_THREADS +# include +# include +# ifdef USRSTACK +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +# endif + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) + extern int _end[]; +# define DATAEND ((ptr_t)(&_end)) +# define DYNAMIC_LOADING +# endif +# ifdef NETBSD +# define OS_TYPE "NETBSD" +# define HEURISTIC2 +# ifdef __ELF__ + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +# define DYNAMIC_LOADING +# else + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) +# endif +# endif +# ifdef FREEBSD +# define OS_TYPE "FREEBSD" +# define SIG_SUSPEND SIGUSR1 +# define SIG_THR_RESTART SIGUSR2 +# define FREEBSD_STACKBOTTOM +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif + extern char etext[]; + extern char edata[]; + extern char end[]; +# define NEED_FIND_LIMIT +# define DATASTART ((ptr_t)(&etext)) + ptr_t GC_find_limit(ptr_t, GC_bool); +# define DATAEND GC_find_limit(DATASTART, TRUE) +# define DATAEND_IS_FUNC +# define GC_HAVE_DATAREGION2 +# define DATASTART2 ((ptr_t)(&edata)) +# define DATAEND2 ((ptr_t)(&end)) +# endif +# endif + +# ifdef I386 +# define MACH_TYPE "I386" +# if defined(__LP64__) || defined(_WIN64) +# error This should be handled as X86_64 +# else +# define CPP_WORDSZ 32 +# define ALIGNMENT 4 + /* Appears to hold for all "32 bit" compilers */ + /* except Borland. The -a4 option fixes */ + /* Borland. For Watcom the option is -zp4. */ +# endif +# ifdef SEQUENT +# define OS_TYPE "SEQUENT" + extern int etext[]; +# define DATASTART ((ptr_t)((((word)(etext)) + 0xfff) & ~0xfff)) +# define STACKBOTTOM ((ptr_t)0x3ffff000) +# endif +# ifdef BEOS +# define OS_TYPE "BEOS" +# include +# define GETPAGESIZE() (unsigned)B_PAGE_SIZE + extern int etext[]; +# define DATASTART ((ptr_t)((((word)(etext)) + 0xfff) & ~0xfff)) +# endif +# ifdef SOLARIS +# define OS_TYPE "SOLARIS" + extern int _etext[], _end[]; + ptr_t GC_SysVGetDataStart(size_t, ptr_t); +# define DATASTART GC_SysVGetDataStart(0x1000, (ptr_t)_etext) +# define DATASTART_IS_FUNC +# define DATAEND ((ptr_t)(_end)) +/* # define STACKBOTTOM ((ptr_t)(_start)) worked through 2.7, */ +/* but reportedly breaks under 2.8. It appears that the stack */ +/* base is a property of the executable, so this should not break */ +/* old executables. */ +/* HEURISTIC2 probably works, but this appears to be preferable. */ +/* Apparently USRSTACK is defined to be USERLIMIT, but in some */ +/* installations that's undefined. We work around this with a */ +/* gross hack: */ +# include +# ifdef USERLIMIT + /* This should work everywhere, but doesn't. */ +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +/* At least in Solaris 2.5, PROC_VDB gives wrong values for dirty bits. */ +/* It appears to be fixed in 2.8 and 2.9. */ +# ifdef SOLARIS25_PROC_VDB_BUG_FIXED +# define PROC_VDB +# endif +# ifndef GC_THREADS +# define MPROTECT_VDB +# endif +# define DYNAMIC_LOADING +# if !defined(USE_MMAP) && defined(REDIRECT_MALLOC) +# define USE_MMAP + /* Otherwise we now use calloc. Mmap may result in the */ + /* heap interleaved with thread stacks, which can result in */ + /* excessive blacklisting. Sbrk is unusable since it */ + /* doesn't interact correctly with the system malloc. */ +# endif +# ifdef USE_MMAP +# define HEAP_START (ptr_t)0x40000000 +# else +# define HEAP_START DATAEND +# endif +# endif +# ifdef SCO +# define OS_TYPE "SCO" + extern int etext[]; +# define DATASTART ((ptr_t)((((word)(etext)) + 0x3fffff) & ~0x3fffff) \ + + ((word)(etext) & 0xfff)) +# define STACKBOTTOM ((ptr_t)0x7ffffffc) +# endif +# ifdef SCO_ELF +# define OS_TYPE "SCO_ELF" + extern int etext[]; +# define DATASTART ((ptr_t)(etext)) +# define STACKBOTTOM ((ptr_t)0x08048000) +# define DYNAMIC_LOADING +# define ELF_CLASS ELFCLASS32 +# endif +# ifdef DGUX +# define OS_TYPE "DGUX" + extern int _etext, _end; + ptr_t GC_SysVGetDataStart(size_t, ptr_t); +# define DATASTART GC_SysVGetDataStart(0x1000, (ptr_t)(&_etext)) +# define DATASTART_IS_FUNC +# define DATAEND ((ptr_t)(&_end)) +# define STACK_GROWS_DOWN +# define HEURISTIC2 +# include +# define GETPAGESIZE() (unsigned)sysconf(_SC_PAGESIZE) +# define DYNAMIC_LOADING +# ifndef USE_MMAP +# define USE_MMAP +# endif +# define MAP_FAILED (void *) ((word)-1) +# ifdef USE_MMAP +# define HEAP_START (ptr_t)0x40000000 +# else +# define HEAP_START DATAEND +# endif +# endif /* DGUX */ +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# if !defined(GC_LINUX_THREADS) || !defined(REDIRECT_MALLOC) +# define MPROTECT_VDB +# else + /* We seem to get random errors in incremental mode, */ + /* possibly because Linux threads is itself a malloc client */ + /* and can't deal with the signals. */ +# endif +# define HEAP_START (ptr_t)0x1000 + /* This encourages mmap to give us low addresses, */ + /* thus allowing the heap to grow to ~3GB */ +# ifdef __ELF__ +# define DYNAMIC_LOADING +# include +# if defined(__GLIBC__) && __GLIBC__ >= 2 \ + || defined(PLATFORM_ANDROID) +# define SEARCH_FOR_DATA_START +# else + extern char **__environ; +# define DATASTART ((ptr_t)(&__environ)) + /* hideous kludge: __environ is the first */ + /* word in crt0.o, and delimits the start */ + /* of the data segment, no matter which */ + /* ld options were passed through. */ + /* We could use _etext instead, but that */ + /* would include .rodata, which may */ + /* contain large read-only data tables */ + /* that we'd rather not scan. */ +# endif + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# if defined(PLATFORM_ANDROID) && !defined(GC_NO_SIGSETJMP) \ + && !(__ANDROID_API__ >= 18 || __GNUC__ > 4 \ + || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8) \ + || __clang_major__ > 3 \ + || (__clang_major__ == 3 && __clang_minor__ >= 2)) + /* Older Android NDK releases lack sigsetjmp in x86 libc */ + /* (setjmp is used instead to find data_start). The bug */ + /* is fixed in Android NDK r8e (so, ok to use sigsetjmp */ + /* if gcc4.8+, clang3.2+ or Android API level 18+). */ +# define GC_NO_SIGSETJMP +# endif +# else + extern int etext[]; +# define DATASTART ((ptr_t)((((word)(etext)) + 0xfff) & ~0xfff)) +# endif +# ifdef USE_I686_PREFETCH +# define PREFETCH(x) \ + __asm__ __volatile__ ("prefetchnta %0" : : "m"(*(char *)(x))) + /* Empirically prefetcht0 is much more effective at reducing */ + /* cache miss stalls for the targeted load instructions. But it */ + /* seems to interfere enough with other cache traffic that the */ + /* net result is worse than prefetchnta. */ +# ifdef FORCE_WRITE_PREFETCH + /* Using prefetches for write seems to have a slight negative */ + /* impact on performance, at least for a PIII/500. */ +# define GC_PREFETCH_FOR_WRITE(x) \ + __asm__ __volatile__ ("prefetcht0 %0" : : "m"(*(char *)(x))) +# else +# define NO_PREFETCH_FOR_WRITE +# endif +# elif defined(USE_3DNOW_PREFETCH) +# define PREFETCH(x) \ + __asm__ __volatile__ ("prefetch %0" : : "m"(*(char *)(x))) +# define GC_PREFETCH_FOR_WRITE(x) \ + __asm__ __volatile__ ("prefetchw %0" : : "m"(*(char *)(x))) +# endif +# if defined(__GLIBC__) && !defined(__UCLIBC__) + /* Workaround lock elision implementation for some glibc. */ +# define GLIBC_2_19_TSX_BUG +# include /* for gnu_get_libc_version() */ +# endif +# endif +# ifdef CYGWIN32 +# define OS_TYPE "CYGWIN32" +# define DATASTART ((ptr_t)GC_DATASTART) /* From gc.h */ +# define DATAEND ((ptr_t)GC_DATAEND) +# undef STACK_GRAN +# define STACK_GRAN 0x10000 +# ifdef USE_MMAP +# define NEED_FIND_LIMIT +# define USE_MMAP_ANON +# endif +# endif +# ifdef OS2 +# define OS_TYPE "OS2" + /* STACKBOTTOM and DATASTART are handled specially in */ + /* os_dep.c. OS2 actually has the right */ + /* system call! */ +# define DATAEND /* not needed */ +# endif +# ifdef MSWIN32 +# define OS_TYPE "MSWIN32" + /* STACKBOTTOM and DATASTART are handled specially in */ + /* os_dep.c. */ +# define MPROTECT_VDB +# define GWW_VDB +# define DATAEND /* not needed */ +# endif +# ifdef MSWINCE +# define OS_TYPE "MSWINCE" +# define DATAEND /* not needed */ +# endif +# ifdef DJGPP +# define OS_TYPE "DJGPP" +# include "stubinfo.h" + extern int etext[]; + extern int _stklen; + extern int __djgpp_stack_limit; +# define DATASTART ((ptr_t)((((word)(etext)) + 0x1ff) & ~0x1ff)) +/* #define STACKBOTTOM ((ptr_t)((word)_stubinfo+_stubinfo->size+_stklen)) */ +# define STACKBOTTOM ((ptr_t)((word)__djgpp_stack_limit + _stklen)) + /* This may not be right. */ +# endif +# ifdef OPENBSD +# define OS_TYPE "OPENBSD" +# ifndef GC_OPENBSD_THREADS +# include +# include +# ifdef USRSTACK +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +# endif + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) + extern int _end[]; +# define DATAEND ((ptr_t)(&_end)) +# define DYNAMIC_LOADING +# endif +# ifdef FREEBSD +# define OS_TYPE "FREEBSD" +# ifndef GC_FREEBSD_THREADS +# define MPROTECT_VDB +# endif +# ifdef __GLIBC__ +# define SIG_SUSPEND (32+6) +# define SIG_THR_RESTART (32+5) + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# else +# define SIG_SUSPEND SIGUSR1 +# define SIG_THR_RESTART SIGUSR2 + /* SIGTSTP and SIGCONT could be used alternatively. */ +# endif +# define FREEBSD_STACKBOTTOM +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif + extern char etext[]; +# define DATASTART GC_FreeBSDGetDataStart(0x1000, (ptr_t)etext) +# define DATASTART_USES_BSDGETDATASTART +# endif +# ifdef NETBSD +# define OS_TYPE "NETBSD" +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif +# endif +# ifdef THREE86BSD +# define OS_TYPE "THREE86BSD" +# endif +# ifdef BSDI +# define OS_TYPE "BSDI" +# endif +# if defined(NETBSD) || defined(THREE86BSD) || defined(BSDI) +# define HEURISTIC2 + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) +# endif +# ifdef NEXT +# define OS_TYPE "NEXT" +# define DATASTART ((ptr_t)get_etext()) +# define DATASTART_IS_FUNC +# define STACKBOTTOM ((ptr_t)0xc0000000) +# define DATAEND /* not needed */ +# endif +# ifdef RTEMS +# define OS_TYPE "RTEMS" +# include + extern int etext[]; + extern int end[]; + void *rtems_get_stack_bottom(void); +# define InitStackBottom rtems_get_stack_bottom() +# define DATASTART ((ptr_t)etext) +# define DATAEND ((ptr_t)end) +# define STACKBOTTOM ((ptr_t)InitStackBottom) +# define SIG_SUSPEND SIGUSR1 +# define SIG_THR_RESTART SIGUSR2 +# endif +# ifdef DOS4GW +# define OS_TYPE "DOS4GW" + extern long __nullarea; + extern char _end; + extern char *_STACKTOP; + /* Depending on calling conventions Watcom C either precedes */ + /* or does not precedes with underscore names of C-variables. */ + /* Make sure startup code variables always have the same names. */ + #pragma aux __nullarea "*"; + #pragma aux _end "*"; +# define STACKBOTTOM ((ptr_t)_STACKTOP) + /* confused? me too. */ +# define DATASTART ((ptr_t)(&__nullarea)) +# define DATAEND ((ptr_t)(&_end)) +# endif +# ifdef HURD +# define OS_TYPE "HURD" +# define STACK_GROWS_DOWN +# define HEURISTIC2 +# define SIG_SUSPEND SIGUSR1 +# define SIG_THR_RESTART SIGUSR2 +# define SEARCH_FOR_DATA_START + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +/* # define MPROTECT_VDB Not quite working yet? */ +# define DYNAMIC_LOADING +# ifndef USE_MMAP +# define USE_MMAP +# endif +# define USE_MMAP_ANON +# endif +# ifdef DARWIN +# define OS_TYPE "DARWIN" +# define DARWIN_DONT_PARSE_STACK +# ifndef GC_DONT_REGISTER_MAIN_STATIC_DATA +# define DYNAMIC_LOADING +# endif + /* XXX: see get_end(3), get_etext() and get_end() should not be used. */ + /* These aren't used when dyld support is enabled (it is by default). */ +# define DATASTART ((ptr_t)get_etext()) +# define DATAEND ((ptr_t)get_end()) +# define STACKBOTTOM ((ptr_t)0xc0000000) +# ifndef USE_MMAP +# define USE_MMAP +# endif +# define USE_MMAP_ANON +# define MPROTECT_VDB +# include +# define GETPAGESIZE() (unsigned)getpagesize() + /* There seems to be some issues with trylock hanging on darwin. */ + /* This should be looked into some more. */ +# define NO_PTHREAD_TRYLOCK +# if TARGET_OS_IPHONE && !defined(NO_DYLD_BIND_FULLY_IMAGE) + /* iPhone/iPad simulator */ +# define NO_DYLD_BIND_FULLY_IMAGE +# endif +# endif /* DARWIN */ +# endif + +# ifdef NS32K +# define MACH_TYPE "NS32K" +# define ALIGNMENT 4 + extern char **environ; +# define DATASTART ((ptr_t)(&environ)) + /* hideous kludge: environ is the first */ + /* word in crt0.o, and delimits the start */ + /* of the data segment, no matter which */ + /* ld options were passed through. */ +# define STACKBOTTOM ((ptr_t)0xfffff000) /* for Encore */ +# endif + +# ifdef MIPS +# define MACH_TYPE "MIPS" +# ifdef LINUX +# define OS_TYPE "LINUX" +# define DYNAMIC_LOADING + extern int _end[]; +# pragma weak __data_start + extern int __data_start[]; +# define DATASTART ((ptr_t)(__data_start)) +# define DATAEND ((ptr_t)(_end)) +# ifdef _MIPS_SZPTR +# define CPP_WORDSZ _MIPS_SZPTR +# define ALIGNMENT (_MIPS_SZPTR/8) +# else +# define ALIGNMENT 4 +# endif +# ifndef HBLKSIZE +# define HBLKSIZE 4096 +# endif +# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 2 || __GLIBC__ > 2 +# define LINUX_STACKBOTTOM +# else +# define STACKBOTTOM ((ptr_t)0x7fff8000) +# endif +# endif /* Linux */ +# ifdef EWS4800 +# define HEURISTIC2 +# if defined(_MIPS_SZPTR) && (_MIPS_SZPTR == 64) + extern int _fdata[], _end[]; +# define DATASTART ((ptr_t)_fdata) +# define DATAEND ((ptr_t)_end) +# define CPP_WORDSZ _MIPS_SZPTR +# define ALIGNMENT (_MIPS_SZPTR/8) +# else + extern int etext[], edata[], end[]; + extern int _DYNAMIC_LINKING[], _gp[]; +# define DATASTART ((ptr_t)((((word)(etext) + 0x3ffff) & ~0x3ffff) \ + + ((word)(etext) & 0xffff))) +# define DATAEND ((ptr_t)(edata)) +# define GC_HAVE_DATAREGION2 +# define DATASTART2 (_DYNAMIC_LINKING \ + ? (ptr_t)(((word)_gp + 0x8000 + 0x3ffff) & ~0x3ffff) \ + : (ptr_t)edata) +# define DATAEND2 ((ptr_t)(end)) +# define ALIGNMENT 4 +# endif +# define OS_TYPE "EWS4800" +# endif +# ifdef ULTRIX +# define HEURISTIC2 +# define DATASTART ((ptr_t)0x10000000) + /* Could probably be slightly higher since */ + /* startup code allocates lots of stuff. */ +# define OS_TYPE "ULTRIX" +# define ALIGNMENT 4 +# endif +# ifdef IRIX5 +# define HEURISTIC2 + extern int _fdata[]; +# define DATASTART ((ptr_t)(_fdata)) +# ifdef USE_MMAP +# define HEAP_START (ptr_t)0x30000000 +# else +# define HEAP_START DATASTART +# endif + /* Lowest plausible heap address. */ + /* In the MMAP case, we map there. */ + /* In either case it is used to identify */ + /* heap sections so they're not */ + /* considered as roots. */ +# define OS_TYPE "IRIX5" +/*# define MPROTECT_VDB DOB: this should work, but there is evidence */ +/* of recent breakage. */ +# ifdef _MIPS_SZPTR +# define CPP_WORDSZ _MIPS_SZPTR +# define ALIGNMENT (_MIPS_SZPTR/8) +# else +# define ALIGNMENT 4 +# endif +# define DYNAMIC_LOADING +# endif +# ifdef MSWINCE +# define OS_TYPE "MSWINCE" +# define ALIGNMENT 4 +# define DATAEND /* not needed */ +# endif +# if defined(NETBSD) +# define OS_TYPE "NETBSD" +# define ALIGNMENT 4 +# define HEURISTIC2 +# ifdef __ELF__ + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +# define NEED_FIND_LIMIT +# define DYNAMIC_LOADING +# else +# define DATASTART ((ptr_t)0x10000000) +# define STACKBOTTOM ((ptr_t)0x7ffff000) +# endif /* _ELF_ */ +# endif +# ifdef OPENBSD +# define OS_TYPE "OPENBSD" +# define ALIGNMENT 4 +# ifndef GC_OPENBSD_THREADS +# include +# include +# ifdef USRSTACK +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +# endif + extern int _fdata[]; +# define DATASTART ((ptr_t)_fdata) + extern int _end[]; +# define DATAEND ((ptr_t)(&_end)) +# define DYNAMIC_LOADING +# endif +# ifdef FREEBSD +# define OS_TYPE "FREEBSD" +# define ALIGNMENT 4 +# ifndef GC_FREEBSD_THREADS +# define MPROTECT_VDB +# endif +# define SIG_SUSPEND SIGUSR1 +# define SIG_THR_RESTART SIGUSR2 +# define FREEBSD_STACKBOTTOM +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif + extern char etext[]; +# define DATASTART GC_FreeBSDGetDataStart(0x1000, (ptr_t)etext) +# define DATASTART_USES_BSDGETDATASTART +# endif /* FreeBSD */ +# if defined(NONSTOP) +# define CPP_WORDSZ 32 +# define OS_TYPE "NONSTOP" +# define ALIGNMENT 4 +# define DATASTART ((ptr_t)0x08000000) + extern char **environ; +# define DATAEND ((ptr_t)(environ - 0x10)) +# define STACKBOTTOM ((ptr_t)0x4fffffff) +# endif +# endif + +# ifdef NIOS2 +# define CPP_WORDSZ 32 +# define MACH_TYPE "NIOS2" +# ifdef LINUX +# define OS_TYPE "LINUX" +# define DYNAMIC_LOADING + extern int _end[]; + extern int __data_start[]; +# define DATASTART ((ptr_t)(__data_start)) +# define DATAEND ((ptr_t)(_end)) +# define ALIGNMENT 4 +# ifndef HBLKSIZE +# define HBLKSIZE 4096 +# endif +# define LINUX_STACKBOTTOM +# endif /* Linux */ +# endif + +# ifdef OR1K +# define CPP_WORDSZ 32 +# define MACH_TYPE "OR1K" +# ifdef LINUX +# define OS_TYPE "LINUX" +# define DYNAMIC_LOADING + extern int _end[]; + extern int __data_start[]; +# define DATASTART ((ptr_t)(__data_start)) +# define DATAEND ((ptr_t)(_end)) +# define ALIGNMENT 4 +# ifndef HBLKSIZE +# define HBLKSIZE 4096 +# endif +# define LINUX_STACKBOTTOM +# endif /* Linux */ +# endif + +# ifdef HP_PA +# define MACH_TYPE "HP_PA" +# ifdef __LP64__ +# define CPP_WORDSZ 64 +# define ALIGNMENT 8 +# else +# define CPP_WORDSZ 32 +# define ALIGNMENT 4 +# endif +# if !defined(GC_HPUX_THREADS) && !defined(GC_LINUX_THREADS) \ + && !defined(OPENBSD) && !defined(LINUX) /* For now. */ +# define MPROTECT_VDB +# endif +# define STACK_GROWS_UP +# ifdef HPUX +# define OS_TYPE "HPUX" + extern int __data_start[]; +# define DATASTART ((ptr_t)(__data_start)) +# ifdef USE_HPUX_FIXED_STACKBOTTOM + /* The following appears to work for 7xx systems running HP/UX */ + /* 9.xx. Furthermore, it might result in much faster */ + /* collections than HEURISTIC2, which may involve scanning */ + /* segments that directly precede the stack. It is not the */ + /* default, since it may not work on older machine/OS */ + /* combinations. (Thanks to Raymond X.T. Nijssen for uncovering */ + /* this.) */ +# define STACKBOTTOM ((ptr_t)0x7b033000) /* from /etc/conf/h/param.h */ +# else + /* Gustavo Rodriguez-Rivera suggested changing HEURISTIC2 */ + /* to this. Note that the GC must be initialized before the */ + /* first putenv call. */ + extern char ** environ; +# define STACKBOTTOM ((ptr_t)environ) +# endif +# define DYNAMIC_LOADING +# include +# define GETPAGESIZE() (unsigned)sysconf(_SC_PAGE_SIZE) +# ifndef __GNUC__ +# define PREFETCH(x) do { \ + register long addr = (long)(x); \ + (void) _asm ("LDW", 0, 0, addr, 0); \ + } while (0) +# endif +# endif /* HPUX */ +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# define DYNAMIC_LOADING +# define SEARCH_FOR_DATA_START + extern int _end[]; +# define DATAEND ((ptr_t)(&_end)) +# endif /* LINUX */ +# ifdef OPENBSD +# define OS_TYPE "OPENBSD" +# ifndef GC_OPENBSD_THREADS +# include +# include +# ifdef USRSTACK +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +# endif + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) + extern int _end[]; +# define DATAEND ((ptr_t)(&_end)) +# define DYNAMIC_LOADING +# endif +# endif /* HP_PA */ + +# ifdef ALPHA +# define MACH_TYPE "ALPHA" +# define ALIGNMENT 8 +# define CPP_WORDSZ 64 +# ifdef NETBSD +# define OS_TYPE "NETBSD" +# define HEURISTIC2 + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +# define ELFCLASS32 32 +# define ELFCLASS64 64 +# define ELF_CLASS ELFCLASS64 +# define DYNAMIC_LOADING +# endif +# ifdef OPENBSD +# define OS_TYPE "OPENBSD" +# define ELF_CLASS ELFCLASS64 +# ifndef GC_OPENBSD_THREADS +# include +# include +# ifdef USRSTACK +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +# endif + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) + extern int _end[]; +# define DATAEND ((ptr_t)(&_end)) +# define DYNAMIC_LOADING +# endif +# ifdef FREEBSD +# define OS_TYPE "FREEBSD" +/* MPROTECT_VDB is not yet supported at all on FreeBSD/alpha. */ +# define SIG_SUSPEND SIGUSR1 +# define SIG_THR_RESTART SIGUSR2 + /* SIGTSTP and SIGCONT could be used alternatively. */ +# define FREEBSD_STACKBOTTOM +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif +/* Handle unmapped hole alpha*-*-freebsd[45]* puts between etext and edata. */ + extern char etext[]; + extern char edata[]; + extern char end[]; +# define NEED_FIND_LIMIT +# define DATASTART ((ptr_t)(&etext)) + ptr_t GC_find_limit(ptr_t, GC_bool); +# define DATAEND GC_find_limit(DATASTART, TRUE) +# define DATAEND_IS_FUNC +# define GC_HAVE_DATAREGION2 +# define DATASTART2 ((ptr_t)(&edata)) +# define DATAEND2 ((ptr_t)(&end)) +# endif +# ifdef OSF1 +# define OS_TYPE "OSF1" +# define DATASTART ((ptr_t)0x140000000) + extern int _end[]; +# define DATAEND ((ptr_t)(&_end)) + extern char ** environ; + /* round up from the value of environ to the nearest page boundary */ + /* Probably breaks if putenv is called before collector */ + /* initialization. */ +# define STACKBOTTOM ((ptr_t)(((word)(environ) | (getpagesize()-1))+1)) +/* # define HEURISTIC2 */ + /* Normally HEURISTIC2 is too conservative, since */ + /* the text segment immediately follows the stack. */ + /* Hence we give an upper pound. */ + /* This is currently unused, since we disabled HEURISTIC2 */ + extern int __start[]; +# define HEURISTIC2_LIMIT ((ptr_t)((word)(__start) & ~(getpagesize()-1))) +# ifndef GC_OSF1_THREADS + /* Unresolved signal issues with threads. */ +# define MPROTECT_VDB +# endif +# define DYNAMIC_LOADING +# endif +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# ifdef __ELF__ +# define SEARCH_FOR_DATA_START +# define DYNAMIC_LOADING +# else +# define DATASTART ((ptr_t)0x140000000) +# endif + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# define MPROTECT_VDB + /* Has only been superficially tested. May not */ + /* work on all versions. */ +# endif +# endif + +# ifdef IA64 +# define MACH_TYPE "IA64" +# ifdef HPUX +# ifdef _ILP32 +# define CPP_WORDSZ 32 + /* Requires 8 byte alignment for malloc */ +# define ALIGNMENT 4 +# else +# ifndef _LP64 +# error --> unknown ABI +# endif +# define CPP_WORDSZ 64 + /* Requires 16 byte alignment for malloc */ +# define ALIGNMENT 8 +# endif +# define OS_TYPE "HPUX" + extern int __data_start[]; +# define DATASTART ((ptr_t)(__data_start)) + /* Gustavo Rodriguez-Rivera suggested changing HEURISTIC2 */ + /* to this. Note that the GC must be initialized before the */ + /* first putenv call. */ + extern char ** environ; +# define STACKBOTTOM ((ptr_t)environ) +# define HPUX_STACKBOTTOM +# define DYNAMIC_LOADING +# include +# define GETPAGESIZE() (unsigned)sysconf(_SC_PAGE_SIZE) + /* The following was empirically determined, and is probably */ + /* not very robust. */ + /* Note that the backing store base seems to be at a nice */ + /* address minus one page. */ +# define BACKING_STORE_DISPLACEMENT 0x1000000 +# define BACKING_STORE_ALIGNMENT 0x1000 + extern ptr_t GC_register_stackbottom; +# define BACKING_STORE_BASE GC_register_stackbottom + /* Known to be wrong for recent HP/UX versions!!! */ +# endif +# ifdef LINUX +# define CPP_WORDSZ 64 +# define ALIGNMENT 8 +# define OS_TYPE "LINUX" + /* The following works on NUE and older kernels: */ +/* # define STACKBOTTOM ((ptr_t) 0xa000000000000000l) */ + /* This does not work on NUE: */ +# define LINUX_STACKBOTTOM + /* We also need the base address of the register stack */ + /* backing store. */ + extern ptr_t GC_register_stackbottom; +# define BACKING_STORE_BASE GC_register_stackbottom +# define SEARCH_FOR_DATA_START +# ifdef __GNUC__ +# define DYNAMIC_LOADING +# else + /* In the Intel compiler environment, we seem to end up with */ + /* statically linked executables and an undefined reference */ + /* to _DYNAMIC */ +# endif +# define MPROTECT_VDB + /* Requires Linux 2.3.47 or later. */ + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# ifdef __GNUC__ +# ifndef __INTEL_COMPILER +# define PREFETCH(x) \ + __asm__ (" lfetch [%0]": : "r"(x)) +# define GC_PREFETCH_FOR_WRITE(x) \ + __asm__ (" lfetch.excl [%0]": : "r"(x)) +# define CLEAR_DOUBLE(x) \ + __asm__ (" stf.spill [%0]=f0": : "r"((void *)(x))) +# else +# include +# define PREFETCH(x) __lfetch(__lfhint_none, (x)) +# define GC_PREFETCH_FOR_WRITE(x) __lfetch(__lfhint_nta, (x)) +# define CLEAR_DOUBLE(x) __stf_spill((void *)(x), 0) +# endif /* __INTEL_COMPILER */ +# endif +# endif +# ifdef CYGWIN32 +# define OS_TYPE "CYGWIN32" +# define DATASTART ((ptr_t)GC_DATASTART) /* From gc.h */ +# define DATAEND ((ptr_t)GC_DATAEND) +# undef STACK_GRAN +# define STACK_GRAN 0x10000 +# ifdef USE_MMAP +# define NEED_FIND_LIMIT +# define USE_MMAP_ANON +# endif +# endif +# ifdef MSWIN32 + /* FIXME: This is a very partial guess. There is no port, yet. */ +# define OS_TYPE "MSWIN32" + /* STACKBOTTOM and DATASTART are handled specially in */ + /* os_dep.c. */ +# define DATAEND /* not needed */ +# if defined(_WIN64) +# define CPP_WORDSZ 64 +# else +# define CPP_WORDSZ 32 /* Is this possible? */ +# endif +# define ALIGNMENT 8 +# endif +# endif + +# ifdef M88K +# define MACH_TYPE "M88K" +# define ALIGNMENT 4 + extern int etext[]; +# ifdef CX_UX +# define OS_TYPE "CX_UX" +# define DATASTART ((ptr_t)((((word)(etext) + 0x3fffff) & ~0x3fffff) \ + + 0x10000)) +# endif +# ifdef DGUX +# define OS_TYPE "DGUX" + ptr_t GC_SysVGetDataStart(size_t, ptr_t); +# define DATASTART GC_SysVGetDataStart(0x10000, (ptr_t)etext) +# define DATASTART_IS_FUNC +# endif +# define STACKBOTTOM ((char*)0xf0000000) /* determined empirically */ +# endif + +# ifdef S370 + /* If this still works, and if anyone cares, this should probably */ + /* be moved to the S390 category. */ +# define MACH_TYPE "S370" +# define ALIGNMENT 4 /* Required by hardware */ +# ifdef UTS4 +# define OS_TYPE "UTS4" + extern int etext[]; + extern int _etext[]; + extern int _end[]; + ptr_t GC_SysVGetDataStart(size_t, ptr_t); +# define DATASTART GC_SysVGetDataStart(0x10000, (ptr_t)_etext) +# define DATASTART_IS_FUNC +# define DATAEND ((ptr_t)(_end)) +# define HEURISTIC2 +# endif +# endif + +# ifdef S390 +# define MACH_TYPE "S390" +# ifndef __s390x__ +# define ALIGNMENT 4 +# define CPP_WORDSZ 32 +# else +# define ALIGNMENT 8 +# define CPP_WORDSZ 64 +# ifndef HBLKSIZE +# define HBLKSIZE 4096 +# endif +# endif +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# define DYNAMIC_LOADING + extern int __data_start[] __attribute__((__weak__)); +# define DATASTART ((ptr_t)(__data_start)) + extern int _end[] __attribute__((__weak__)); +# define DATAEND ((ptr_t)(_end)) +# define CACHE_LINE_SIZE 256 +# define GETPAGESIZE() 4096 +# endif +# endif + +# ifdef AARCH64 +# define MACH_TYPE "AARCH64" +# ifdef __ILP32__ +# define CPP_WORDSZ 32 +# define ALIGNMENT 4 +# else +# define CPP_WORDSZ 64 +# define ALIGNMENT 8 +# endif +# ifndef HBLKSIZE +# define HBLKSIZE 4096 +# endif +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# define DYNAMIC_LOADING + extern int __data_start[]; + extern int _end[]; +# define DATASTART ((ptr_t)__data_start) +# define DATAEND ((ptr_t)(&_end)) +# endif +# ifdef DARWIN + /* iOS */ +# define OS_TYPE "DARWIN" +# define DARWIN_DONT_PARSE_STACK +# ifndef GC_DONT_REGISTER_MAIN_STATIC_DATA +# define DYNAMIC_LOADING +# endif +# define DATASTART ((ptr_t)get_etext()) +# define DATAEND ((ptr_t)get_end()) +# define STACKBOTTOM ((ptr_t)0x16fdfffff) +# ifndef USE_MMAP +# define USE_MMAP +# endif +# define USE_MMAP_ANON +# define MPROTECT_VDB +# include +# define GETPAGESIZE() (unsigned)getpagesize() + /* FIXME: There seems to be some issues with trylock hanging on */ + /* darwin. This should be looked into some more. */ +# define NO_PTHREAD_TRYLOCK +# if TARGET_OS_IPHONE && !defined(NO_DYLD_BIND_FULLY_IMAGE) +# define NO_DYLD_BIND_FULLY_IMAGE +# endif +# endif +# ifdef FREEBSD +# define OS_TYPE "FREEBSD" +# ifndef GC_FREEBSD_THREADS +# define MPROTECT_VDB +# endif +# define FREEBSD_STACKBOTTOM +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif + extern char etext[]; +# define DATASTART GC_FreeBSDGetDataStart(0x1000, (ptr_t)etext) +# define DATASTART_USES_BSDGETDATASTART +# endif +# ifdef NOSYS + /* __data_start is usually defined in the target linker script. */ + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) + extern void *__stack_base__; +# define STACKBOTTOM ((ptr_t)__stack_base__) +# endif +# endif + +# ifdef ARM32 +# if defined(NACL) +# define MACH_TYPE "NACL" +# else +# define MACH_TYPE "ARM32" +# endif +# define CPP_WORDSZ 32 +# define ALIGNMENT 4 +# ifdef NETBSD +# define OS_TYPE "NETBSD" +# define HEURISTIC2 +# ifdef __ELF__ + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +# define DYNAMIC_LOADING +# else + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) +# endif +# endif +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# undef STACK_GRAN +# define STACK_GRAN 0x10000000 +# ifdef __ELF__ +# define DYNAMIC_LOADING +# include +# if defined(__GLIBC__) && __GLIBC__ >= 2 \ + || defined(PLATFORM_ANDROID) +# define SEARCH_FOR_DATA_START +# else + extern char **__environ; +# define DATASTART ((ptr_t)(&__environ)) + /* hideous kludge: __environ is the first */ + /* word in crt0.o, and delimits the start */ + /* of the data segment, no matter which */ + /* ld options were passed through. */ + /* We could use _etext instead, but that */ + /* would include .rodata, which may */ + /* contain large read-only data tables */ + /* that we'd rather not scan. */ +# endif + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# else + extern int etext[]; +# define DATASTART ((ptr_t)((((word)(etext)) + 0xfff) & ~0xfff)) +# endif +# endif +# ifdef MSWINCE +# define OS_TYPE "MSWINCE" +# define DATAEND /* not needed */ +# endif +# ifdef FREEBSD + /* FreeBSD/arm */ +# define OS_TYPE "FREEBSD" +# ifndef GC_FREEBSD_THREADS +# define MPROTECT_VDB +# endif +# define SIG_SUSPEND SIGUSR1 +# define SIG_THR_RESTART SIGUSR2 +# define FREEBSD_STACKBOTTOM +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif + extern char etext[]; +# define DATASTART GC_FreeBSDGetDataStart(0x1000, (ptr_t)etext) +# define DATASTART_USES_BSDGETDATASTART +# endif +# ifdef DARWIN + /* iOS */ +# define OS_TYPE "DARWIN" +# define DARWIN_DONT_PARSE_STACK +# ifndef GC_DONT_REGISTER_MAIN_STATIC_DATA +# define DYNAMIC_LOADING +# endif +# define DATASTART ((ptr_t)get_etext()) +# define DATAEND ((ptr_t)get_end()) +# define STACKBOTTOM ((ptr_t)0x30000000) +# ifndef USE_MMAP +# define USE_MMAP +# endif +# define USE_MMAP_ANON +# define MPROTECT_VDB +# include +# define GETPAGESIZE() (unsigned)getpagesize() + /* FIXME: There seems to be some issues with trylock hanging on */ + /* darwin. This should be looked into some more. */ +# define NO_PTHREAD_TRYLOCK +# if TARGET_OS_IPHONE && !defined(NO_DYLD_BIND_FULLY_IMAGE) +# define NO_DYLD_BIND_FULLY_IMAGE +# endif +# endif +# ifdef OPENBSD +# define ALIGNMENT 4 +# define OS_TYPE "OPENBSD" +# ifndef GC_OPENBSD_THREADS +# include +# include +# ifdef USRSTACK +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +# endif + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) + extern int _end[]; +# define DATAEND ((ptr_t)(&_end)) +# define DYNAMIC_LOADING +# endif +# ifdef NOSYS + /* __data_start is usually defined in the target linker script. */ + extern int __data_start[]; +# define DATASTART ((ptr_t)(__data_start)) + /* __stack_base__ is set in newlib/libc/sys/arm/crt0.S */ + extern void *__stack_base__; +# define STACKBOTTOM ((ptr_t)(__stack_base__)) +# endif +#endif + +# ifdef CRIS +# define MACH_TYPE "CRIS" +# define CPP_WORDSZ 32 +# define ALIGNMENT 1 +# define OS_TYPE "LINUX" +# define DYNAMIC_LOADING +# define LINUX_STACKBOTTOM +# define SEARCH_FOR_DATA_START + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# endif + +# if defined(SH) && !defined(SH4) +# define MACH_TYPE "SH" +# define ALIGNMENT 4 +# ifdef MSWINCE +# define OS_TYPE "MSWINCE" +# define DATAEND /* not needed */ +# endif +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# define DYNAMIC_LOADING +# define SEARCH_FOR_DATA_START + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# endif +# ifdef NETBSD +# define OS_TYPE "NETBSD" +# define HEURISTIC2 + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +# define DYNAMIC_LOADING +# endif +# ifdef OPENBSD +# define OS_TYPE "OPENBSD" +# ifndef GC_OPENBSD_THREADS +# include +# include +# ifdef USRSTACK +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +# endif + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) + extern int _end[]; +# define DATAEND ((ptr_t)(&_end)) +# define DYNAMIC_LOADING +# endif +# endif + +# ifdef SH4 +# define MACH_TYPE "SH4" +# define OS_TYPE "MSWINCE" +# define ALIGNMENT 4 +# define DATAEND /* not needed */ +# endif + +# ifdef AVR32 +# define MACH_TYPE "AVR32" +# define CPP_WORDSZ 32 +# define ALIGNMENT 4 +# define OS_TYPE "LINUX" +# define DYNAMIC_LOADING +# define LINUX_STACKBOTTOM +# define SEARCH_FOR_DATA_START + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# endif + +# ifdef M32R +# define CPP_WORDSZ 32 +# define MACH_TYPE "M32R" +# define ALIGNMENT 4 +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# undef STACK_GRAN +# define STACK_GRAN 0x10000000 +# define DYNAMIC_LOADING +# define SEARCH_FOR_DATA_START + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# endif +# endif + +# ifdef X86_64 +# define MACH_TYPE "X86_64" +# ifdef __ILP32__ +# define ALIGNMENT 4 +# define CPP_WORDSZ 32 +# else +# define ALIGNMENT 8 +# define CPP_WORDSZ 64 +# endif +# ifndef HBLKSIZE +# define HBLKSIZE 4096 +# endif +# define CACHE_LINE_SIZE 64 +# ifdef OPENBSD +# define OS_TYPE "OPENBSD" +# define ELF_CLASS ELFCLASS64 +# ifndef GC_OPENBSD_THREADS +# include +# include +# ifdef USRSTACK +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +# endif + extern int __data_start[]; + extern int _end[]; +# define DATASTART ((ptr_t)__data_start) +# define DATAEND ((ptr_t)(&_end)) +# define DYNAMIC_LOADING +# endif +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# if !defined(GC_LINUX_THREADS) || !defined(REDIRECT_MALLOC) +# define MPROTECT_VDB +# else + /* We seem to get random errors in incremental mode, */ + /* possibly because Linux threads is itself a malloc client */ + /* and can't deal with the signals. */ +# endif +# ifdef __ELF__ +# define DYNAMIC_LOADING +# include +# define SEARCH_FOR_DATA_START + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# else + extern int etext[]; +# define DATASTART ((ptr_t)((((word)(etext)) + 0xfff) & ~0xfff)) +# endif +# if defined(__GLIBC__) && !defined(__UCLIBC__) + /* At present, there's a bug in GLibc getcontext() on */ + /* Linux/x64 (it clears FPU exception mask). We define this */ + /* macro to workaround it. */ + /* FIXME: This seems to be fixed in GLibc v2.14. */ +# define GETCONTEXT_FPU_EXCMASK_BUG +# endif +# if defined(__GLIBC__) && !defined(__UCLIBC__) + /* Workaround lock elision implementation for some glibc. */ +# define GLIBC_2_19_TSX_BUG +# include /* for gnu_get_libc_version() */ +# endif +# endif +# ifdef DARWIN +# define OS_TYPE "DARWIN" +# define DARWIN_DONT_PARSE_STACK +# ifndef GC_DONT_REGISTER_MAIN_STATIC_DATA +# define DYNAMIC_LOADING +# endif + /* XXX: see get_end(3), get_etext() and get_end() should not be used. */ + /* These aren't used when dyld support is enabled (it is by default) */ +# define DATASTART ((ptr_t)get_etext()) +# define DATAEND ((ptr_t)get_end()) +# define STACKBOTTOM ((ptr_t)0x7fff5fc00000) +# ifndef USE_MMAP +# define USE_MMAP +# endif +# define USE_MMAP_ANON +# define MPROTECT_VDB +# include +# define GETPAGESIZE() (unsigned)getpagesize() + /* There seems to be some issues with trylock hanging on darwin. */ + /* This should be looked into some more. */ +# define NO_PTHREAD_TRYLOCK +# if TARGET_OS_IPHONE && !defined(NO_DYLD_BIND_FULLY_IMAGE) + /* iPhone/iPad simulator */ +# define NO_DYLD_BIND_FULLY_IMAGE +# endif +# endif +# ifdef FREEBSD +# define OS_TYPE "FREEBSD" +# ifndef GC_FREEBSD_THREADS +# define MPROTECT_VDB +# endif +# ifdef __GLIBC__ +# define SIG_SUSPEND (32+6) +# define SIG_THR_RESTART (32+5) + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# else +# define SIG_SUSPEND SIGUSR1 +# define SIG_THR_RESTART SIGUSR2 + /* SIGTSTP and SIGCONT could be used alternatively. */ +# endif +# define FREEBSD_STACKBOTTOM +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif + extern char etext[]; +# define DATASTART GC_FreeBSDGetDataStart(0x1000, (ptr_t)etext) +# define DATASTART_USES_BSDGETDATASTART +# endif +# ifdef NETBSD +# define OS_TYPE "NETBSD" +# define HEURISTIC2 +# ifdef __ELF__ + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +# define DYNAMIC_LOADING +# else +# define SEARCH_FOR_DATA_START +# endif +# endif +# ifdef SOLARIS +# define OS_TYPE "SOLARIS" +# define ELF_CLASS ELFCLASS64 + extern int _etext[], _end[]; + ptr_t GC_SysVGetDataStart(size_t, ptr_t); +# define DATASTART GC_SysVGetDataStart(0x1000, (ptr_t)_etext) +# define DATASTART_IS_FUNC +# define DATAEND ((ptr_t)(_end)) +/* # define STACKBOTTOM ((ptr_t)(_start)) worked through 2.7, */ +/* but reportedly breaks under 2.8. It appears that the stack */ +/* base is a property of the executable, so this should not break */ +/* old executables. */ +/* HEURISTIC2 probably works, but this appears to be preferable. */ +/* Apparently USRSTACK is defined to be USERLIMIT, but in some */ +/* installations that's undefined. We work around this with a */ +/* gross hack: */ +# include +# ifdef USERLIMIT + /* This should work everywhere, but doesn't. */ +# define STACKBOTTOM ((ptr_t)USRSTACK) +# else +# define HEURISTIC2 +# endif +/* At least in Solaris 2.5, PROC_VDB gives wrong values for dirty bits. */ +/* It appears to be fixed in 2.8 and 2.9. */ +# ifdef SOLARIS25_PROC_VDB_BUG_FIXED +# define PROC_VDB +# endif +# ifndef GC_THREADS +# define MPROTECT_VDB +# endif +# define DYNAMIC_LOADING +# if !defined(USE_MMAP) && defined(REDIRECT_MALLOC) +# define USE_MMAP + /* Otherwise we now use calloc. Mmap may result in the */ + /* heap interleaved with thread stacks, which can result in */ + /* excessive blacklisting. Sbrk is unusable since it */ + /* doesn't interact correctly with the system malloc. */ +# endif +# ifdef USE_MMAP +# define HEAP_START (ptr_t)0x40000000 +# else +# define HEAP_START DATAEND +# endif +# endif +# ifdef MSWIN32 +# define OS_TYPE "MSWIN32" + /* STACKBOTTOM and DATASTART are handled specially in */ + /* os_dep.c. */ +# if !defined(__GNUC__) || defined(__INTEL_COMPILER) + /* GCC does not currently support SetUnhandledExceptionFilter */ + /* (does not generate SEH unwinding information) on x64. */ +# define MPROTECT_VDB +# endif +# define GWW_VDB +# define DATAEND /* not needed */ +# endif +# endif /* X86_64 */ + +# ifdef HEXAGON +# define CPP_WORDSZ 32 +# define MACH_TYPE "HEXAGON" +# define ALIGNMENT 4 +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# define MPROTECT_VDB +# ifdef __ELF__ +# define DYNAMIC_LOADING +# include +# if defined(__GLIBC__) && __GLIBC__ >= 2 +# define SEARCH_FOR_DATA_START +# else +# error --> unknown Hexagon libc configuration +# endif + extern int _end[]; +# define DATAEND ((ptr_t)(_end)) +# elif !defined(CPPCHECK) +# error --> bad Hexagon Linux configuration +# endif +# else +# error --> unknown Hexagon OS configuration +# endif +# endif + +# ifdef TILEPRO +# define CPP_WORDSZ 32 +# define MACH_TYPE "TILEPro" +# define ALIGNMENT 4 +# define PREFETCH(x) __insn_prefetch(x) +# define CACHE_LINE_SIZE 64 +# ifdef LINUX +# define OS_TYPE "LINUX" + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) +# define LINUX_STACKBOTTOM +# define DYNAMIC_LOADING +# endif +# endif + +# ifdef TILEGX +# define CPP_WORDSZ (__SIZEOF_POINTER__ * 8) +# define MACH_TYPE "TILE-Gx" +# define ALIGNMENT __SIZEOF_POINTER__ +# if CPP_WORDSZ < 64 +# define CLEAR_DOUBLE(x) (*(long long *)(x) = 0) +# endif +# define PREFETCH(x) __insn_prefetch_l1(x) +# define CACHE_LINE_SIZE 64 +# ifdef LINUX +# define OS_TYPE "LINUX" + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) +# define LINUX_STACKBOTTOM +# define DYNAMIC_LOADING +# endif +# endif + +#if defined(__GLIBC__) && !defined(DONT_USE_LIBC_PRIVATES) + /* Use glibc's stack-end marker. */ +# define USE_LIBC_PRIVATES +#endif + +#if defined(LINUX_STACKBOTTOM) && defined(NO_PROC_STAT) \ + && !defined(USE_LIBC_PRIVATES) + /* This combination will fail, since we have no way to get */ + /* the stack base. Use HEURISTIC2 instead. */ +# undef LINUX_STACKBOTTOM +# define HEURISTIC2 + /* This may still fail on some architectures like IA64. */ + /* We tried ... */ +#endif + +#if defined(LINUX) && defined(USE_MMAP) + /* The kernel may do a somewhat better job merging mappings etc. */ + /* with anonymous mappings. */ +# define USE_MMAP_ANON +#endif + +#if defined(GC_LINUX_THREADS) && defined(REDIRECT_MALLOC) \ + && !defined(USE_PROC_FOR_LIBRARIES) + /* Nptl allocates thread stacks with mmap, which is fine. But it */ + /* keeps a cache of thread stacks. Thread stacks contain the */ + /* thread control blocks. These in turn contain a pointer to */ + /* (sizeof (void *) from the beginning of) the dtv for thread-local */ + /* storage, which is calloc allocated. If we don't scan the cached */ + /* thread stacks, we appear to lose the dtv. This tends to */ + /* result in something that looks like a bogus dtv count, which */ + /* tends to result in a memset call on a block that is way too */ + /* large. Sometimes we're lucky and the process just dies ... */ + /* There seems to be a similar issue with some other memory */ + /* allocated by the dynamic loader. */ + /* This should be avoidable by either: */ + /* - Defining USE_PROC_FOR_LIBRARIES here. */ + /* That performs very poorly, precisely because we end up */ + /* scanning cached stacks. */ + /* - Have calloc look at its callers. */ + /* In spite of the fact that it is gross and disgusting. */ + /* In fact neither seems to suffice, probably in part because */ + /* even with USE_PROC_FOR_LIBRARIES, we don't scan parts of stack */ + /* segments that appear to be out of bounds. Thus we actually */ + /* do both, which seems to yield the best results. */ +# define USE_PROC_FOR_LIBRARIES +#endif + +#ifndef STACK_GROWS_UP +# define STACK_GROWS_DOWN +#endif + +#ifndef CPP_WORDSZ +# define CPP_WORDSZ 32 +#endif + +#ifndef OS_TYPE +# define OS_TYPE "" +#endif + +#ifndef DATAEND + extern int end[]; +# define DATAEND ((ptr_t)(end)) +#endif + +/* Workaround for Android NDK clang 3.5+ (as of NDK r10e) which does */ +/* not provide correct _end symbol. Unfortunately, alternate __end__ */ +/* symbol is provided only by NDK "bfd" linker. */ +#if defined(PLATFORM_ANDROID) && defined(__clang__) +# undef DATAEND +# pragma weak __end__ + extern int __end__[]; +# define DATAEND (__end__ != 0 ? (ptr_t)__end__ : (ptr_t)_end) +#endif + +#if (defined(SVR4) || defined(PLATFORM_ANDROID)) && !defined(GETPAGESIZE) +# include +# define GETPAGESIZE() (unsigned)sysconf(_SC_PAGESIZE) +#endif + +#ifndef GETPAGESIZE +# if defined(SOLARIS) || defined(IRIX5) || defined(LINUX) \ + || defined(NETBSD) || defined(FREEBSD) || defined(HPUX) +# include +# endif +# define GETPAGESIZE() (unsigned)getpagesize() +#endif + +#if defined(PLATFORM_ANDROID) && !(__ANDROID_API__ >= 23) \ + && ((defined(MIPS) && (CPP_WORDSZ == 32)) \ + || defined(ARM32) || defined(I386) /* but not x32 */) + /* tkill() exists only on arm32/mips(32)/x86. */ + /* NDK r11+ deprecates tkill() but keeps it for Mono clients. */ +# define USE_TKILL_ON_ANDROID +#endif + +#if defined(SOLARIS) || defined(DRSNX) || defined(UTS4) + /* OS has SVR4 generic features. */ + /* Probably others also qualify. */ +# define SVR4 +#endif + +#if defined(SOLARIS) || defined(DRSNX) + /* OS has SOLARIS style semi-undocumented interface */ + /* to dynamic loader. */ +# define SOLARISDL + /* OS has SOLARIS style signal handlers. */ +# define SUNOS5SIGS +#endif + +#if defined(HPUX) +# define SUNOS5SIGS +#endif + +#if defined(FREEBSD) && (defined(__DragonFly__) || __FreeBSD__ >= 4 \ + || (__FreeBSD_kernel__ >= 4)) +# define SUNOS5SIGS +#endif + +#if !defined(GC_EXPLICIT_SIGNALS_UNBLOCK) && defined(SUNOS5SIGS) \ + && !defined(GC_NO_PTHREAD_SIGMASK) +# define GC_EXPLICIT_SIGNALS_UNBLOCK +#endif + +#if !defined(NO_MARKER_SPECIAL_SIGMASK) \ + && (defined(NACL) || defined(GC_WIN32_PTHREADS)) + /* Either there is no pthread_sigmask(), or GC marker thread cannot */ + /* steal and drop user signal calls. */ +# define NO_MARKER_SPECIAL_SIGMASK +#endif + +#ifdef GC_NETBSD_THREADS +# define SIGRTMIN 33 +# define SIGRTMAX 63 +#endif + +#ifdef GC_OPENBSD_THREADS +# include + /* Prior to 5.2 release, OpenBSD had user threads and required */ + /* special handling. */ +# if OpenBSD < 201211 +# define GC_OPENBSD_UTHREADS 1 +# endif +#endif /* GC_OPENBSD_THREADS */ + +#if defined(SVR4) || defined(LINUX) || defined(IRIX5) || defined(HPUX) \ + || defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD) \ + || defined(DGUX) || defined(BSD) || defined(HURD) \ + || defined(AIX) || defined(DARWIN) || defined(OSF1) +# define UNIX_LIKE /* Basic Unix-like system calls work. */ +#endif + +#if defined(CPPCHECK) +# undef CPP_WORDSZ +# define CPP_WORDSZ (__SIZEOF_POINTER__ * 8) +#endif + +#if CPP_WORDSZ != 32 && CPP_WORDSZ != 64 +# error --> bad word size +#endif + +#if !defined(ALIGNMENT) && !defined(CPPCHECK) +# error --> undefined ALIGNMENT +#endif + +#ifdef PCR +# undef DYNAMIC_LOADING +# undef STACKBOTTOM +# undef HEURISTIC1 +# undef HEURISTIC2 +# undef PROC_VDB +# undef MPROTECT_VDB +# define PCR_VDB +#endif + +#if !defined(STACKBOTTOM) && (defined(ECOS) || defined(NOSYS)) \ + && !defined(CPPCHECK) +# error --> undefined STACKBOTTOM +#endif + +#ifdef IGNORE_DYNAMIC_LOADING +# undef DYNAMIC_LOADING +#endif + +#if defined(SMALL_CONFIG) && !defined(GC_DISABLE_INCREMENTAL) + /* Presumably not worth the space it takes. */ +# define GC_DISABLE_INCREMENTAL +#endif + +#if (defined(MSWIN32) || defined(MSWINCE)) && !defined(USE_WINALLOC) + /* USE_WINALLOC is only an option for Cygwin. */ +# define USE_WINALLOC +#endif + +#ifdef USE_WINALLOC +# undef USE_MMAP +#endif + +#if defined(LINUX) || defined(FREEBSD) || defined(SOLARIS) || defined(IRIX5) \ + || ((defined(USE_MMAP) || defined(USE_MUNMAP)) && !defined(USE_WINALLOC)) +# define MMAP_SUPPORTED +#endif + +#if defined(GC_DISABLE_INCREMENTAL) || defined(MANUAL_VDB) +# undef GWW_VDB +# undef MPROTECT_VDB +# undef PCR_VDB +# undef PROC_VDB +#endif + +#ifdef GC_DISABLE_INCREMENTAL +# undef CHECKSUMS +#endif + +#ifdef USE_GLOBAL_ALLOC + /* Cannot pass MEM_WRITE_WATCH to GlobalAlloc(). */ +# undef GWW_VDB +#endif + +#ifdef USE_MUNMAP + /* FIXME: Remove this undef if possible. */ +# undef MPROTECT_VDB /* Can't deal with address space holes. */ +#endif + +/* PARALLEL_MARK does not cause undef MPROTECT_VDB any longer. */ + +#if defined(MPROTECT_VDB) && defined(GC_PREFER_MPROTECT_VDB) + /* Choose MPROTECT_VDB manually (if multiple strategies available). */ +# undef PCR_VDB +# undef PROC_VDB + /* #undef GWW_VDB - handled in os_dep.c */ +#endif + +#ifdef PROC_VDB + /* Multi-VDB mode is not implemented. */ +# undef MPROTECT_VDB +#endif + +#if defined(SIGBUS) && !defined(HAVE_SIGBUS) && !defined(CPPCHECK) +# define HAVE_SIGBUS +#endif + +#ifndef SA_SIGINFO +# define NO_SA_SIGACTION +#endif + +#if defined(NO_SA_SIGACTION) && defined(MPROTECT_VDB) && !defined(DARWIN) \ + && !defined(MSWIN32) && !defined(MSWINCE) +# undef MPROTECT_VDB +#endif + +#if !defined(PCR_VDB) && !defined(PROC_VDB) && !defined(MPROTECT_VDB) \ + && !defined(GWW_VDB) && !defined(MANUAL_VDB) \ + && !defined(GC_DISABLE_INCREMENTAL) +# define DEFAULT_VDB +#endif + +#if ((defined(UNIX_LIKE) && (defined(DARWIN) || defined(HURD) \ + || defined(OPENBSD) || defined(ARM32) \ + || defined(MIPS) || defined(AVR32) \ + || defined(OR1K) || defined(NIOS2))) \ + || (defined(LINUX) && !defined(__gnu_linux__)) \ + || (defined(RTEMS) && defined(I386)) || defined(PLATFORM_ANDROID)) \ + && !defined(NO_GETCONTEXT) +# define NO_GETCONTEXT +#endif + +#ifndef PREFETCH +# if defined(__GNUC__) && __GNUC__ >= 3 && !defined(NO_PREFETCH) +# define PREFETCH(x) __builtin_prefetch((x), 0, 0) +# else +# define PREFETCH(x) (void)0 +# endif +#endif + +#ifndef GC_PREFETCH_FOR_WRITE +# if defined(__GNUC__) && __GNUC__ >= 3 && !defined(NO_PREFETCH_FOR_WRITE) +# define GC_PREFETCH_FOR_WRITE(x) __builtin_prefetch((x), 1) +# else +# define GC_PREFETCH_FOR_WRITE(x) (void)0 +# endif +#endif + +#ifndef CACHE_LINE_SIZE +# define CACHE_LINE_SIZE 32 /* Wild guess */ +#endif + +#ifndef STATIC +# ifndef NO_DEBUGGING +# define STATIC /* ignore to aid profiling and possibly debugging */ +# else +# define STATIC static +# endif +#endif + +#if defined(LINUX) && (defined(USE_PROC_FOR_LIBRARIES) || defined(IA64) \ + || !defined(SMALL_CONFIG)) +# define NEED_PROC_MAPS +#endif + +#if defined(LINUX) || defined(HURD) || defined(__GLIBC__) +# define REGISTER_LIBRARIES_EARLY + /* We sometimes use dl_iterate_phdr, which may acquire an internal */ + /* lock. This isn't safe after the world has stopped. So we must */ + /* call GC_register_dynamic_libraries before stopping the world. */ + /* For performance reasons, this may be beneficial on other */ + /* platforms as well, though it should be avoided in win32. */ +#endif /* LINUX */ + +#if defined(SEARCH_FOR_DATA_START) + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +#endif + +#ifndef HEAP_START +# define HEAP_START ((ptr_t)0) +#endif + +#ifndef CLEAR_DOUBLE +# define CLEAR_DOUBLE(x) (((word*)(x))[0] = 0, ((word*)(x))[1] = 0) +#endif + +#if defined(GC_LINUX_THREADS) && defined(REDIRECT_MALLOC) \ + && !defined(INCLUDE_LINUX_THREAD_DESCR) + /* Will not work, since libc and the dynamic loader use thread */ + /* locals, sometimes as the only reference. */ +# define INCLUDE_LINUX_THREAD_DESCR +#endif + +#if !defined(CPPCHECK) +#if defined(GC_IRIX_THREADS) && !defined(IRIX5) +# error --> inconsistent configuration +#endif +#if defined(GC_LINUX_THREADS) && !defined(LINUX) && !defined(NACL) +# error --> inconsistent configuration +#endif +#if defined(GC_NETBSD_THREADS) && !defined(NETBSD) +# error --> inconsistent configuration +#endif +#if defined(GC_FREEBSD_THREADS) && !defined(FREEBSD) +# error --> inconsistent configuration +#endif +#if defined(GC_SOLARIS_THREADS) && !defined(SOLARIS) +# error --> inconsistent configuration +#endif +#if defined(GC_HPUX_THREADS) && !defined(HPUX) +# error --> inconsistent configuration +#endif +#if defined(GC_AIX_THREADS) && !defined(_AIX) +# error --> inconsistent configuration +#endif +#if defined(GC_GNU_THREADS) && !defined(HURD) +# error --> inconsistent configuration +#endif +#if defined(GC_WIN32_THREADS) && !defined(MSWIN32) && !defined(CYGWIN32) \ + && !defined(MSWINCE) +# error --> inconsistent configuration +#endif +#endif /* !CPPCHECK */ + +#if defined(PCR) || defined(GC_WIN32_THREADS) || defined(GC_PTHREADS) \ + || defined(SN_TARGET_PS3) +# define THREADS +#endif + +#if defined(PARALLEL_MARK) && !defined(THREADS) && !defined(CPPCHECK) +# error "invalid config - PARALLEL_MARK requires GC_THREADS" +#endif + +#if (((defined(MSWIN32) || defined(MSWINCE)) && !defined(__GNUC__)) \ + || (defined(MSWIN32) && defined(I386)) /* for Win98 */ \ + || (defined(USE_PROC_FOR_LIBRARIES) && defined(THREADS))) \ + && !defined(NO_WRAP_MARK_SOME) + /* Under rare conditions, we may end up marking from nonexistent */ + /* memory. Hence we need to be prepared to recover by running */ + /* GC_mark_some with a suitable handler in place. */ + /* TODO: Probably replace __GNUC__ above with ndef GC_PTHREADS. */ + /* FIXME: Should we really need it for WinCE? If yes then */ + /* WRAP_MARK_SOME should be also defined for CeGCC which requires */ + /* CPU/OS-specific code in mark_ex_handler and GC_mark_some (for */ + /* manual stack unwinding and exception handler installation). */ +# define WRAP_MARK_SOME +#endif + +#if defined(PARALLEL_MARK) && !defined(DEFAULT_STACK_MAYBE_SMALL) \ + && (defined(HPUX) || defined(GC_DGUX386_THREADS) \ + || defined(NO_GETCONTEXT) /* e.g. musl */) + /* TODO: Test default stack size in configure. */ +# define DEFAULT_STACK_MAYBE_SMALL +#endif + +#ifdef PARALLEL_MARK +# define MIN_STACK_SIZE (8 * HBLKSIZE * sizeof(word)) +#elif defined(THREADS) +# define MIN_STACK_SIZE 65536 +#endif + +#if defined(PLATFORM_ANDROID) && !defined(THREADS) \ + && !defined(USE_GET_STACKBASE_FOR_MAIN) + /* Always use pthread_attr_getstack on Android ("-lpthread" option is */ + /* not needed to be specified manually) since GC_linux_main_stack_base */ + /* causes app crash if invoked inside Dalvik VM. */ +# define USE_GET_STACKBASE_FOR_MAIN +#endif + +/* Outline pthread primitives to use in GC_get_[main_]stack_base. */ +#if ((defined(FREEBSD) && defined(__GLIBC__)) /* kFreeBSD */ \ + || defined(LINUX) || defined(NETBSD) || defined(PLATFORM_ANDROID)) \ + && !defined(NO_PTHREAD_GETATTR_NP) +# define HAVE_PTHREAD_GETATTR_NP 1 +#elif defined(FREEBSD) && !defined(__GLIBC__) \ + && !defined(NO_PTHREAD_ATTR_GET_NP) +# define HAVE_PTHREAD_NP_H 1 /* requires include pthread_np.h */ +# define HAVE_PTHREAD_ATTR_GET_NP 1 +#endif + +#if defined(UNIX_LIKE) && defined(THREADS) && !defined(NO_CANCEL_SAFE) \ + && !defined(PLATFORM_ANDROID) + /* Make the code cancellation-safe. This basically means that we */ + /* ensure that cancellation requests are ignored while we are in */ + /* the collector. This applies only to Posix deferred cancellation; */ + /* we don't handle Posix asynchronous cancellation. */ + /* Note that this only works if pthread_setcancelstate is */ + /* async-signal-safe, at least in the absence of asynchronous */ + /* cancellation. This appears to be true for the glibc version, */ + /* though it is not documented. Without that assumption, there */ + /* seems to be no way to safely wait in a signal handler, which */ + /* we need to do for thread suspension. */ + /* Also note that little other code appears to be cancellation-safe. */ + /* Hence it may make sense to turn this off for performance. */ +# define CANCEL_SAFE +#endif + +#ifdef CANCEL_SAFE +# define IF_CANCEL(x) x +#else +# define IF_CANCEL(x) /* empty */ +#endif + +#if !defined(CAN_HANDLE_FORK) && !defined(NO_HANDLE_FORK) \ + && !defined(HAVE_NO_FORK) \ + && ((defined(GC_PTHREADS) && !defined(NACL) \ + && !defined(GC_WIN32_PTHREADS) && !defined(USE_WINALLOC)) \ + || (defined(DARWIN) && defined(MPROTECT_VDB)) || defined(HANDLE_FORK)) + /* Attempts (where supported and requested) to make GC_malloc work in */ + /* a child process fork'ed from a multi-threaded parent. */ +# define CAN_HANDLE_FORK +#endif + +#if defined(CAN_HANDLE_FORK) && !defined(CAN_CALL_ATFORK) \ + && !defined(HURD) \ + && (!defined(PLATFORM_ANDROID) || __ANDROID_API__ >= 21) + /* Have working pthread_atfork(). */ +# define CAN_CALL_ATFORK +#endif + +#if !defined(CAN_HANDLE_FORK) && !defined(HAVE_NO_FORK) \ + && (defined(MSWIN32) || defined(MSWINCE) || defined(DOS4GW) \ + || defined(OS2) || defined(SYMBIAN) /* and probably others ... */) +# define HAVE_NO_FORK +#endif + +#if !defined(USE_MARK_BITS) && !defined(USE_MARK_BYTES) \ + && defined(PARALLEL_MARK) + /* Minimize compare-and-swap usage. */ +# define USE_MARK_BYTES +#endif + +#if defined(MSWINCE) && !defined(__CEGCC__) && !defined(NO_GETENV) +# define NO_GETENV +#endif + +#if (defined(NO_GETENV) || defined(MSWINCE)) && !defined(NO_GETENV_WIN32) +# define NO_GETENV_WIN32 +#endif + +#ifndef STRTOULL +# if defined(_WIN64) && !defined(__GNUC__) +# define STRTOULL _strtoui64 +# elif defined(_LLP64) || defined(__LLP64__) || defined(_WIN64) +# define STRTOULL strtoull +# else + /* strtoul() fits since sizeof(long) >= sizeof(word). */ +# define STRTOULL strtoul +# endif +#endif /* !STRTOULL */ + +#ifndef GC_WORD_C +# if defined(_WIN64) && !defined(__GNUC__) +# define GC_WORD_C(val) val##ui64 +# elif defined(_LLP64) || defined(__LLP64__) || defined(_WIN64) +# define GC_WORD_C(val) val##ULL +# else +# define GC_WORD_C(val) ((word)val##UL) +# endif +#endif /* !GC_WORD_C */ + +#if defined(__has_feature) + /* __has_feature() is supported. */ +# if __has_feature(address_sanitizer) && !defined(ADDRESS_SANITIZER) +# define ADDRESS_SANITIZER +# endif +# if __has_feature(memory_sanitizer) && !defined(MEMORY_SANITIZER) +# define MEMORY_SANITIZER +# endif +#else +# ifdef __SANITIZE_ADDRESS__ + /* GCC v4.8+ */ +# define ADDRESS_SANITIZER +# endif +#endif /* !__has_feature */ + +#if defined(SPARC) +# define ASM_CLEAR_CODE /* Stack clearing is crucial, and we */ + /* include assembly code to do it well. */ +#endif + +/* Can we save call chain in objects for debugging? */ +/* SET NFRAMES (# of saved frames) and NARGS (#of args for each */ +/* frame) to reasonable values for the platform. */ +/* Set SAVE_CALL_CHAIN if we can. SAVE_CALL_COUNT can be specified */ +/* at build time, though we feel free to adjust it slightly. */ +/* Define NEED_CALLINFO if we either save the call stack or */ +/* GC_ADD_CALLER is defined. */ +/* GC_CAN_SAVE_CALL_STACKS is set in gc.h. */ +#if defined(SPARC) +# define CAN_SAVE_CALL_ARGS +#endif +#if (defined(I386) || defined(X86_64)) \ + && (defined(LINUX) || defined(__GLIBC__)) + /* SAVE_CALL_CHAIN is supported if the code is compiled to save */ + /* frame pointers by default, i.e. no -fomit-frame-pointer flag. */ +# define CAN_SAVE_CALL_ARGS +#endif + +#if defined(SAVE_CALL_COUNT) && !defined(GC_ADD_CALLER) \ + && defined(GC_CAN_SAVE_CALL_STACKS) +# define SAVE_CALL_CHAIN +#endif +#ifdef SAVE_CALL_CHAIN +# if defined(SAVE_CALL_NARGS) && defined(CAN_SAVE_CALL_ARGS) +# define NARGS SAVE_CALL_NARGS +# else +# define NARGS 0 /* Number of arguments to save for each call. */ +# endif +#endif +#ifdef SAVE_CALL_CHAIN +# if !defined(SAVE_CALL_COUNT) || defined(CPPCHECK) +# define NFRAMES 6 /* Number of frames to save. Even for */ + /* alignment reasons. */ +# else +# define NFRAMES ((SAVE_CALL_COUNT + 1) & ~1) +# endif +# define NEED_CALLINFO +#endif /* SAVE_CALL_CHAIN */ +#ifdef GC_ADD_CALLER +# define NFRAMES 1 +# define NARGS 0 +# define NEED_CALLINFO +#endif + +#if (defined(FREEBSD) || (defined(DARWIN) && !defined(_POSIX_C_SOURCE)) \ + || (defined(SOLARIS) && (!defined(_XOPEN_SOURCE) \ + || defined(__EXTENSIONS__))) \ + || defined(LINUX)) && !defined(HAVE_DLADDR) +# define HAVE_DLADDR +#endif + +#if defined(MAKE_BACK_GRAPH) && !defined(DBG_HDRS_ALL) +# define DBG_HDRS_ALL +#endif + +#if defined(POINTER_MASK) && !defined(POINTER_SHIFT) +# define POINTER_SHIFT 0 +#endif + +#if defined(POINTER_SHIFT) && !defined(POINTER_MASK) +# define POINTER_MASK ((word)(-1)) +#endif + +#if !defined(FIXUP_POINTER) && defined(POINTER_MASK) +# if defined(CPPCHECK) +# define FIXUP_POINTER(p) (p = (p) << 4) /* e.g. */ +# else +# define FIXUP_POINTER(p) (p = ((p) & POINTER_MASK) << POINTER_SHIFT) +# endif +#endif + +#if defined(FIXUP_POINTER) +# define NEED_FIXUP_POINTER +#else +# define FIXUP_POINTER(p) +#endif + +#if !defined(MARK_BIT_PER_GRANULE) && !defined(MARK_BIT_PER_OBJ) +# define MARK_BIT_PER_GRANULE /* Usually faster */ +#endif + +/* Some static sanity tests. */ +#if !defined(CPPCHECK) +#if defined(MARK_BIT_PER_GRANULE) && defined(MARK_BIT_PER_OBJ) +# error Define only one of MARK_BIT_PER_GRANULE and MARK_BIT_PER_OBJ. +#endif + +#if defined(STACK_GROWS_UP) && defined(STACK_GROWS_DOWN) +# error "Only one of STACK_GROWS_UP and STACK_GROWS_DOWN should be defd." +#endif +#if !defined(STACK_GROWS_UP) && !defined(STACK_GROWS_DOWN) +# error "One of STACK_GROWS_UP and STACK_GROWS_DOWN should be defd." +#endif + +#if defined(REDIRECT_MALLOC) && defined(THREADS) && !defined(LINUX) \ + && !defined(REDIRECT_MALLOC_IN_HEADER) +# error "REDIRECT_MALLOC with THREADS works at most on Linux." +#endif +#endif /* !CPPCHECK */ + +#ifdef GC_PRIVATE_H + /* This relies on some type definitions from gc_priv.h, from */ + /* where it's normally included. */ + /* */ + /* How to get heap memory from the OS: */ + /* Note that sbrk()-like allocation is preferred, since it */ + /* usually makes it possible to merge consecutively allocated */ + /* chunks. It also avoids unintended recursion with */ + /* REDIRECT_MALLOC macro defined. */ + /* GET_MEM() argument should be of size_t type and have */ + /* no side-effect. GET_MEM() returns HBLKSIZE-aligned chunk; */ + /* 0 is taken to mean failure. */ + /* In case of MMAP_SUPPORTED, the argument must also be */ + /* a multiple of a physical page size. */ + /* GET_MEM is currently not assumed to retrieve 0 filled space, */ + /* though we should perhaps take advantage of the case in which */ + /* does. */ + struct hblk; /* See gc_priv.h. */ +# if defined(PCR) + char * real_malloc(size_t bytes); +# define GET_MEM(bytes) HBLKPTR(real_malloc(SIZET_SAT_ADD(bytes, \ + GC_page_size)) \ + + GC_page_size-1) +# elif defined(OS2) + void * os2_alloc(size_t bytes); +# define GET_MEM(bytes) HBLKPTR((ptr_t)os2_alloc( \ + SIZET_SAT_ADD(bytes, \ + GC_page_size)) \ + + GC_page_size-1) +# elif defined(NEXT) || defined(DOS4GW) || defined(NONSTOP) \ + || (defined(AMIGA) && !defined(GC_AMIGA_FASTALLOC)) \ + || (defined(SOLARIS) && !defined(USE_MMAP)) || defined(RTEMS) \ + || defined(__CC_ARM) +# define GET_MEM(bytes) HBLKPTR((size_t)calloc(1, \ + SIZET_SAT_ADD(bytes, \ + GC_page_size)) \ + + GC_page_size - 1) +# elif defined(MSWIN32) || defined(CYGWIN32) + ptr_t GC_win32_get_mem(size_t bytes); +# define GET_MEM(bytes) (struct hblk *)GC_win32_get_mem(bytes) +# elif defined(MACOS) +# if defined(USE_TEMPORARY_MEMORY) + Ptr GC_MacTemporaryNewPtr(size_t size, Boolean clearMemory); +# define GET_MEM(bytes) HBLKPTR(GC_MacTemporaryNewPtr( \ + SIZET_SAT_ADD(bytes, \ + GC_page_size), true) \ + + GC_page_size-1) +# else +# define GET_MEM(bytes) HBLKPTR(NewPtrClear(SIZET_SAT_ADD(bytes, \ + GC_page_size)) \ + + GC_page_size-1) +# endif +# elif defined(MSWINCE) + ptr_t GC_wince_get_mem(size_t bytes); +# define GET_MEM(bytes) (struct hblk *)GC_wince_get_mem(bytes) +# elif defined(AMIGA) && defined(GC_AMIGA_FASTALLOC) + void *GC_amiga_get_mem(size_t bytes); +# define GET_MEM(bytes) HBLKPTR((size_t)GC_amiga_get_mem( \ + SIZET_SAT_ADD(bytes, \ + GC_page_size)) \ + + GC_page_size-1) +# elif defined(SN_TARGET_PS3) + void *ps3_get_mem(size_t bytes); +# define GET_MEM(bytes) (struct hblk*)ps3_get_mem(bytes) +# else + ptr_t GC_unix_get_mem(size_t bytes); +# define GET_MEM(bytes) (struct hblk *)GC_unix_get_mem(bytes) +# endif +#endif /* GC_PRIVATE_H */ + +#endif /* GCCONFIG_H */ diff --git a/include/private/msvc_dbg.h b/include/private/msvc_dbg.h new file mode 100644 index 0000000..1d3030a --- /dev/null +++ b/include/private/msvc_dbg.h @@ -0,0 +1,69 @@ +/* + Copyright (c) 2004-2005 Andrei Polushin + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ +#ifndef _MSVC_DBG_H +#define _MSVC_DBG_H + +#include + +#ifdef __cplusplus +extern "C" { +#endif + +#if !MSVC_DBG_DLL +#define MSVC_DBG_EXPORT +#elif MSVC_DBG_BUILD +#define MSVC_DBG_EXPORT __declspec(dllexport) +#else +#define MSVC_DBG_EXPORT __declspec(dllimport) +#endif + +#ifndef MAX_SYM_NAME +#define MAX_SYM_NAME 2000 +#endif + +typedef void* HANDLE; +typedef struct _CONTEXT CONTEXT; + +MSVC_DBG_EXPORT size_t GetStackFrames(size_t skip, void* frames[], size_t maxFrames); +MSVC_DBG_EXPORT size_t GetStackFramesFromContext(HANDLE hProcess, HANDLE hThread, CONTEXT* context, size_t skip, void* frames[], size_t maxFrames); + +MSVC_DBG_EXPORT size_t GetModuleNameFromAddress(void* address, char* moduleName, size_t size); +MSVC_DBG_EXPORT size_t GetModuleNameFromStack(size_t skip, char* moduleName, size_t size); + +MSVC_DBG_EXPORT size_t GetSymbolNameFromAddress(void* address, char* symbolName, size_t size, size_t* offsetBytes); +MSVC_DBG_EXPORT size_t GetSymbolNameFromStack(size_t skip, char* symbolName, size_t size, size_t* offsetBytes); + +MSVC_DBG_EXPORT size_t GetFileLineFromAddress(void* address, char* fileName, size_t size, size_t* lineNumber, size_t* offsetBytes); +MSVC_DBG_EXPORT size_t GetFileLineFromStack(size_t skip, char* fileName, size_t size, size_t* lineNumber, size_t* offsetBytes); + +MSVC_DBG_EXPORT size_t GetDescriptionFromAddress(void* address, const char* format, char* description, size_t size); +MSVC_DBG_EXPORT size_t GetDescriptionFromStack(void*const frames[], size_t count, const char* format, char* description[], size_t size); + +/* Compatibility with */ +MSVC_DBG_EXPORT int backtrace(void* addresses[], int count); +MSVC_DBG_EXPORT char** backtrace_symbols(void*const addresses[], int count); + +#ifdef __cplusplus +} +#endif + +#endif/*_MSVC_DBG_H*/ diff --git a/include/private/pthread_stop_world.h b/include/private/pthread_stop_world.h new file mode 100644 index 0000000..ec5dfea --- /dev/null +++ b/include/private/pthread_stop_world.h @@ -0,0 +1,49 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2009 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_PTHREAD_STOP_WORLD_H +#define GC_PTHREAD_STOP_WORLD_H + +struct thread_stop_info { +# if !defined(GC_OPENBSD_UTHREADS) && !defined(NACL) + volatile AO_t last_stop_count; + /* The value of GC_stop_count when the thread */ + /* last successfully handled a suspend signal. */ +# endif + + ptr_t stack_ptr; /* Valid only when stopped. */ + +# ifdef NACL + /* Grab NACL_GC_REG_STORAGE_SIZE pointers off the stack when */ + /* going into a syscall. 20 is more than we need, but it's an */ + /* overestimate in case the instrumented function uses any callee */ + /* saved registers, they may be pushed to the stack much earlier. */ + /* Also, on amd64 'push' puts 8 bytes on the stack even though */ + /* our pointers are 4 bytes. */ +# ifdef ARM32 + /* Space for r4-r8, r10-r12, r14. */ +# define NACL_GC_REG_STORAGE_SIZE 9 +# else +# define NACL_GC_REG_STORAGE_SIZE 20 +# endif + ptr_t reg_storage[NACL_GC_REG_STORAGE_SIZE]; +# endif +}; + +GC_INNER void GC_stop_init(void); + +#endif diff --git a/include/private/pthread_support.h b/include/private/pthread_support.h new file mode 100644 index 0000000..6abe239 --- /dev/null +++ b/include/private/pthread_support.h @@ -0,0 +1,163 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2009 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#ifndef GC_PTHREAD_SUPPORT_H +#define GC_PTHREAD_SUPPORT_H + +#include "private/gc_priv.h" + +#if defined(GC_PTHREADS) && !defined(GC_WIN32_THREADS) + +#if defined(GC_DARWIN_THREADS) +# include "private/darwin_stop_world.h" +#else +# include "private/pthread_stop_world.h" +#endif + +#ifdef THREAD_LOCAL_ALLOC +# include "thread_local_alloc.h" +#endif + +/* We use the allocation lock to protect thread-related data structures. */ + +/* The set of all known threads. We intercept thread creation and */ +/* joins. */ +/* Protected by allocation/GC lock. */ +/* Some of this should be declared volatile, but that's inconsistent */ +/* with some library routine declarations. */ +typedef struct GC_Thread_Rep { + struct GC_Thread_Rep * next; /* More recently allocated threads */ + /* with a given pthread id come */ + /* first. (All but the first are */ + /* guaranteed to be dead, but we may */ + /* not yet have registered the join.) */ + pthread_t id; +# ifdef USE_TKILL_ON_ANDROID + pid_t kernel_id; +# endif + /* Extra bookkeeping information the stopping code uses */ + struct thread_stop_info stop_info; + +# if defined(GC_ENABLE_SUSPEND_THREAD) && !defined(GC_DARWIN_THREADS) \ + && !defined(GC_OPENBSD_UTHREADS) && !defined(NACL) + volatile AO_t suspended_ext; /* Thread was suspended externally. */ +# endif + + unsigned char flags; +# define FINISHED 1 /* Thread has exited. */ +# define DETACHED 2 /* Thread is treated as detached. */ + /* Thread may really be detached, or */ + /* it may have been explicitly */ + /* registered, in which case we can */ + /* deallocate its GC_Thread_Rep once */ + /* it unregisters itself, since it */ + /* may not return a GC pointer. */ +# define MAIN_THREAD 4 /* True for the original thread only. */ +# define DISABLED_GC 0x10 /* Collections are disabled while the */ + /* thread is exiting. */ + + unsigned char thread_blocked; + /* Protected by GC lock. */ + /* Treated as a boolean value. If set, */ + /* thread will acquire GC lock before */ + /* doing any pointer manipulations, and */ + /* has set its SP value. Thus it does */ + /* not need to be sent a signal to stop */ + /* it. */ + + unsigned short finalizer_skipped; + unsigned char finalizer_nested; + /* Used by GC_check_finalizer_nested() */ + /* to minimize the level of recursion */ + /* when a client finalizer allocates */ + /* memory (initially both are 0). */ + + ptr_t stack_end; /* Cold end of the stack (except for */ + /* main thread). */ + ptr_t altstack; /* The start of the alt-stack if there */ + /* is one, NULL otherwise. */ + word altstack_size; /* The size of the alt-stack if exists. */ + ptr_t stack; /* The start and size of the normal */ + /* stack (set by GC_register_altstack). */ + word stack_size; +# if defined(GC_DARWIN_THREADS) && !defined(DARWIN_DONT_PARSE_STACK) + ptr_t topOfStack; /* Result of GC_FindTopOfStack(0); */ + /* valid only if the thread is blocked; */ + /* non-NULL value means already set. */ +# endif +# ifdef IA64 + ptr_t backing_store_end; + ptr_t backing_store_ptr; +# endif + + struct GC_traced_stack_sect_s *traced_stack_sect; + /* Points to the "frame" data held in stack by */ + /* the innermost GC_call_with_gc_active() of */ + /* this thread. May be NULL. */ + + void * status; /* The value returned from the thread. */ + /* Used only to avoid premature */ + /* reclamation of any data it might */ + /* reference. */ + /* This is unfortunately also the */ + /* reason we need to intercept join */ + /* and detach. */ + +# ifdef THREAD_LOCAL_ALLOC + struct thread_local_freelists tlfs; +# endif +} * GC_thread; + +#ifndef THREAD_TABLE_SZ +# define THREAD_TABLE_SZ 256 /* Power of 2 (for speed). */ +#endif +GC_EXTERN volatile GC_thread GC_threads[THREAD_TABLE_SZ]; + +GC_EXTERN GC_bool GC_thr_initialized; + +GC_INNER GC_thread GC_lookup_thread(pthread_t id); + +GC_EXTERN GC_bool GC_in_thread_creation; + /* We may currently be in thread creation or destruction. */ + /* Only set to TRUE while allocation lock is held. */ + /* When set, it is OK to run GC from unknown thread. */ + +#ifdef NACL + GC_EXTERN __thread GC_thread GC_nacl_gc_thread_self; + GC_INNER void GC_nacl_initialize_gc_thread(void); + GC_INNER void GC_nacl_shutdown_gc_thread(void); +#endif + +#ifdef GC_EXPLICIT_SIGNALS_UNBLOCK + GC_INNER void GC_unblock_gc_signals(void); +#endif + +#ifdef GC_PTHREAD_START_STANDALONE +# define GC_INNER_PTHRSTART /* empty */ +#else +# define GC_INNER_PTHRSTART GC_INNER +#endif + +GC_INNER_PTHRSTART GC_thread GC_start_rtn_prepare_thread( + void *(**pstart)(void *), + void **pstart_arg, + struct GC_stack_base *sb, void *arg); +GC_INNER_PTHRSTART void GC_thread_exit_proc(void *); + +#endif /* GC_PTHREADS && !GC_WIN32_THREADS */ + +#endif /* GC_PTHREAD_SUPPORT_H */ diff --git a/include/private/specific.h b/include/private/specific.h new file mode 100644 index 0000000..57dbb19 --- /dev/null +++ b/include/private/specific.h @@ -0,0 +1,100 @@ +/* + * This is a reimplementation of a subset of the pthread_getspecific/setspecific + * interface. This appears to outperform the standard linuxthreads one + * by a significant margin. + * The major restriction is that each thread may only make a single + * pthread_setspecific call on a single key. (The current data structure + * doesn't really require that. The restriction should be easily removable.) + * We don't currently support the destruction functions, though that + * could be done. + * We also currently assume that only one pthread_setspecific call + * can be executed at a time, though that assumption would be easy to remove + * by adding a lock. + */ + +#include +#include "atomic_ops.h" + +/* Called during key creation or setspecific. */ +/* For the GC we already hold lock. */ +/* Currently allocated objects leak on thread exit. */ +/* That's hard to fix, but OK if we allocate garbage */ +/* collected memory. */ +#define MALLOC_CLEAR(n) GC_INTERNAL_MALLOC(n, NORMAL) + +#define TS_CACHE_SIZE 1024 +#define CACHE_HASH(n) ((((n) >> 8) ^ (n)) & (TS_CACHE_SIZE - 1)) + +#define TS_HASH_SIZE 1024 +#define HASH(p) \ + ((unsigned)((((word)(p)) >> 8) ^ (word)(p)) & (TS_HASH_SIZE - 1)) + +/* An entry describing a thread-specific value for a given thread. */ +/* All such accessible structures preserve the invariant that if either */ +/* thread is a valid pthread id or qtid is a valid "quick tread id" */ +/* for a thread, then value holds the corresponding thread specific */ +/* value. This invariant must be preserved at ALL times, since */ +/* asynchronous reads are allowed. */ +typedef struct thread_specific_entry { + volatile AO_t qtid; /* quick thread id, only for cache */ + void * value; + struct thread_specific_entry *next; + pthread_t thread; +} tse; + +/* We represent each thread-specific datum as two tables. The first is */ +/* a cache, indexed by a "quick thread identifier". The "quick" thread */ +/* identifier is an easy to compute value, which is guaranteed to */ +/* determine the thread, though a thread may correspond to more than */ +/* one value. We typically use the address of a page in the stack. */ +/* The second is a hash table, indexed by pthread_self(). It is used */ +/* only as a backup. */ + +/* Return the "quick thread id". Default version. Assumes page size, */ +/* or at least thread stack separation, is at least 4K. */ +/* Must be defined so that it never returns 0. (Page 0 can't really be */ +/* part of any stack, since that would make 0 a valid stack pointer.) */ +#define quick_thread_id() (((word)GC_approx_sp()) >> 12) + +#define INVALID_QTID ((word)0) +#define INVALID_THREADID ((pthread_t)0) + +union ptse_ao_u { + tse *p; + volatile AO_t ao; +}; + +typedef struct thread_specific_data { + tse * volatile cache[TS_CACHE_SIZE]; + /* A faster index to the hash table */ + union ptse_ao_u hash[TS_HASH_SIZE]; + pthread_mutex_t lock; +} tsd; + +typedef tsd * GC_key_t; + +#define GC_key_create(key, d) GC_key_create_inner(key) +GC_INNER int GC_key_create_inner(tsd ** key_ptr); +GC_INNER int GC_setspecific(tsd * key, void * value); +#define GC_remove_specific(key) \ + GC_remove_specific_after_fork(key, pthread_self()) +GC_INNER void GC_remove_specific_after_fork(tsd * key, pthread_t t); + +/* An internal version of getspecific that assumes a cache miss. */ +GC_INNER void * GC_slow_getspecific(tsd * key, word qtid, + tse * volatile * cache_entry); + +/* GC_INLINE is defined in gc_priv.h. */ +GC_INLINE void * GC_getspecific(tsd * key) +{ + word qtid = quick_thread_id(); + tse * volatile * entry_ptr = &key->cache[CACHE_HASH(qtid)]; + tse * entry = *entry_ptr; /* Must be loaded only once. */ + + GC_ASSERT(qtid != INVALID_QTID); + if (EXPECT(entry -> qtid == qtid, TRUE)) { + GC_ASSERT(entry -> thread == pthread_self()); + return entry -> value; + } + return GC_slow_getspecific(key, qtid, entry_ptr); +} diff --git a/include/private/thread_local_alloc.h b/include/private/thread_local_alloc.h new file mode 100644 index 0000000..7e7627c --- /dev/null +++ b/include/private/thread_local_alloc.h @@ -0,0 +1,189 @@ +/* + * Copyright (c) 2000-2005 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* Included indirectly from a thread-library-specific file. */ +/* This is the interface for thread-local allocation, whose */ +/* implementation is mostly thread-library-independent. */ +/* Here we describe only the interface that needs to be known */ +/* and invoked from the thread support layer; the actual */ +/* implementation also exports GC_malloc and friends, which */ +/* are declared in gc.h. */ + +#ifndef GC_THREAD_LOCAL_ALLOC_H +#define GC_THREAD_LOCAL_ALLOC_H + +#include "private/gc_priv.h" + +#ifdef THREAD_LOCAL_ALLOC + +#include "gc_inline.h" + +#if defined(USE_HPUX_TLS) +# error USE_HPUX_TLS macro was replaced by USE_COMPILER_TLS +#endif + +#if !defined(USE_PTHREAD_SPECIFIC) && !defined(USE_WIN32_SPECIFIC) \ + && !defined(USE_WIN32_COMPILER_TLS) && !defined(USE_COMPILER_TLS) \ + && !defined(USE_CUSTOM_SPECIFIC) +# if defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32) +# if defined(CYGWIN32) && (__GNUC__ >= 4) +# if defined(__clang__) + /* As of Cygwin clang3.5.2, thread-local storage is unsupported. */ +# define USE_PTHREAD_SPECIFIC +# else +# define USE_COMPILER_TLS +# endif +# elif defined(__GNUC__) || defined(MSWINCE) +# define USE_WIN32_SPECIFIC +# else +# define USE_WIN32_COMPILER_TLS +# endif /* !GNU */ +# elif (defined(LINUX) && !defined(ARM32) && !defined(AVR32) \ + && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)) \ + && !(defined(__clang__) && defined(PLATFORM_ANDROID))) \ + || (defined(PLATFORM_ANDROID) && !defined(__clang__) \ + && defined(ARM32) \ + && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))) + /* As of Android NDK r10e, Clang cannot find __tls_get_addr. */ +# define USE_COMPILER_TLS +# elif defined(GC_DGUX386_THREADS) || defined(GC_OSF1_THREADS) \ + || defined(GC_AIX_THREADS) || defined(GC_DARWIN_THREADS) \ + || defined(GC_FREEBSD_THREADS) || defined(GC_NETBSD_THREADS) \ + || defined(GC_LINUX_THREADS) || defined(GC_RTEMS_PTHREADS) +# define USE_PTHREAD_SPECIFIC +# elif defined(GC_HPUX_THREADS) +# ifdef __GNUC__ +# define USE_PTHREAD_SPECIFIC + /* Empirically, as of gcc 3.3, USE_COMPILER_TLS doesn't work. */ +# else +# define USE_COMPILER_TLS +# endif +# else +# define USE_CUSTOM_SPECIFIC /* Use our own. */ +# endif +#endif + +#include + +#ifndef THREAD_FREELISTS_KINDS +# ifdef ENABLE_DISCLAIM +# define THREAD_FREELISTS_KINDS (NORMAL+2) +# else +# define THREAD_FREELISTS_KINDS (NORMAL+1) +# endif +#endif /* !THREAD_FREELISTS_KINDS */ + +/* One of these should be declared as the tlfs field in the */ +/* structure pointed to by a GC_thread. */ +typedef struct thread_local_freelists { + void * _freelists[THREAD_FREELISTS_KINDS][TINY_FREELISTS]; +# define ptrfree_freelists _freelists[PTRFREE] +# define normal_freelists _freelists[NORMAL] + /* Note: Preserve *_freelists names for some clients. */ +# ifdef GC_GCJ_SUPPORT + void * gcj_freelists[TINY_FREELISTS]; +# define ERROR_FL ((void *)(word)-1) + /* Value used for gcj_freelists[-1]; allocation is */ + /* erroneous. */ +# endif + /* Free lists contain either a pointer or a small count */ + /* reflecting the number of granules allocated at that */ + /* size. */ + /* 0 ==> thread-local allocation in use, free list */ + /* empty. */ + /* > 0, <= DIRECT_GRANULES ==> Using global allocation, */ + /* too few objects of this size have been */ + /* allocated by this thread. */ + /* >= HBLKSIZE => pointer to nonempty free list. */ + /* > DIRECT_GRANULES, < HBLKSIZE ==> transition to */ + /* local alloc, equivalent to 0. */ +# define DIRECT_GRANULES (HBLKSIZE/GRANULE_BYTES) + /* Don't use local free lists for up to this much */ + /* allocation. */ +} *GC_tlfs; + +#if defined(USE_PTHREAD_SPECIFIC) +# define GC_getspecific pthread_getspecific +# define GC_setspecific pthread_setspecific +# define GC_key_create pthread_key_create +# define GC_remove_specific(key) pthread_setspecific(key, NULL) + /* Explicitly delete the value to stop the TLS */ + /* destructor from being called repeatedly. */ +# define GC_remove_specific_after_fork(key, t) (void)0 + /* Should not need any action. */ + typedef pthread_key_t GC_key_t; +#elif defined(USE_COMPILER_TLS) || defined(USE_WIN32_COMPILER_TLS) +# define GC_getspecific(x) (x) +# define GC_setspecific(key, v) ((key) = (v), 0) +# define GC_key_create(key, d) 0 +# define GC_remove_specific(key) /* No need for cleanup on exit. */ +# define GC_remove_specific_after_fork(key, t) (void)0 + typedef void * GC_key_t; +#elif defined(USE_WIN32_SPECIFIC) +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN 1 +# endif +# define NOSERVICE +# include +# define GC_getspecific TlsGetValue +# define GC_setspecific(key, v) !TlsSetValue(key, v) + /* We assume 0 == success, msft does the opposite. */ +# ifndef TLS_OUT_OF_INDEXES + /* this is currently missing in WinCE */ +# define TLS_OUT_OF_INDEXES (DWORD)0xFFFFFFFF +# endif +# define GC_key_create(key, d) \ + ((d) != 0 || (*(key) = TlsAlloc()) == TLS_OUT_OF_INDEXES ? -1 : 0) +# define GC_remove_specific(key) /* No need for cleanup on exit. */ + /* Need TlsFree on process exit/detach? */ +# define GC_remove_specific_after_fork(key, t) (void)0 + typedef DWORD GC_key_t; +#elif defined(USE_CUSTOM_SPECIFIC) +# include "private/specific.h" +#else +# error implement me +#endif + +/* Each thread structure must be initialized. */ +/* This call must be made from the new thread. */ +/* Caller holds allocation lock. */ +GC_INNER void GC_init_thread_local(GC_tlfs p); + +/* Called when a thread is unregistered, or exits. */ +/* We hold the allocator lock. */ +GC_INNER void GC_destroy_thread_local(GC_tlfs p); + +/* The thread support layer must arrange to mark thread-local */ +/* free lists explicitly, since the link field is often */ +/* invisible to the marker. It knows how to find all threads; */ +/* we take care of an individual thread freelist structure. */ +GC_INNER void GC_mark_thread_local_fls_for(GC_tlfs p); + +#ifndef GC_ATTR_TLS_FAST +# define GC_ATTR_TLS_FAST /* empty */ +#endif + +extern +#if defined(USE_COMPILER_TLS) + __thread GC_ATTR_TLS_FAST +#elif defined(USE_WIN32_COMPILER_TLS) + __declspec(thread) GC_ATTR_TLS_FAST +#endif + GC_key_t GC_thread_key; +/* This is set up by the thread_local_alloc implementation. No need */ +/* for cleanup on thread exit. But the thread support layer makes sure */ +/* that GC_thread_key is traced, if necessary. */ + +#endif /* THREAD_LOCAL_ALLOC */ + +#endif /* GC_THREAD_LOCAL_ALLOC_H */ diff --git a/include/weakpointer.h b/include/weakpointer.h new file mode 100644 index 0000000..b9af99b --- /dev/null +++ b/include/weakpointer.h @@ -0,0 +1,217 @@ +#ifndef _weakpointer_h_ +#define _weakpointer_h_ + +/**************************************************************************** + +WeakPointer and CleanUp + + Copyright (c) 1991 by Xerox Corporation. All rights reserved. + + THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + + Permission is hereby granted to copy this code for any purpose, + provided the above notices are retained on all copies. + +****************************************************************************/ + +/**************************************************************************** + +WeakPointer + +A weak pointer is a pointer to a heap-allocated object that doesn't +prevent the object from being garbage collected. Weak pointers can be +used to track which objects haven't yet been reclaimed by the +collector. A weak pointer is deactivated when the collector discovers +its referent object is unreachable by normal pointers (reachability +and deactivation are defined more precisely below). A deactivated weak +pointer remains deactivated forever. + +****************************************************************************/ + + +template< class T > class WeakPointer { +public: + +WeakPointer( T* t = 0 ) + /* Constructs a weak pointer for *t. t may be null. It is an error + if t is non-null and *t is not a collected object. */ + {impl = _WeakPointer_New( t );} + +T* Pointer() + /* wp.Pointer() returns a pointer to the referent object of wp or + null if wp has been deactivated (because its referent object + has been discovered unreachable by the collector). */ + {return (T*) _WeakPointer_Pointer( this->impl );} + +int operator==( WeakPointer< T > wp2 ) + /* Given weak pointers wp1 and wp2, if wp1 == wp2, then wp1 and + wp2 refer to the same object. If wp1 != wp2, then either wp1 + and wp2 don't refer to the same object, or if they do, one or + both of them has been deactivated. (Note: If objects t1 and t2 + are never made reachable by their clean-up functions, then + WeakPointer(t1) == WeakPointer(t2) if and only t1 == t2.) */ + {return _WeakPointer_Equal( this->impl, wp2.impl );} + +int Hash() + /* Returns a hash code suitable for use by multiplicative- and + division-based hash tables. If wp1 == wp2, then wp1.Hash() == + wp2.Hash(). */ + {return _WeakPointer_Hash( this->impl );} + +private: +void* impl; +}; + +/***************************************************************************** + +CleanUp + +A garbage-collected object can have an associated clean-up function +that will be invoked some time after the collector discovers the +object is unreachable via normal pointers. Clean-up functions can be +used to release resources such as open-file handles or window handles +when their containing objects become unreachable. If a C++ object has +a non-empty explicit destructor (i.e. it contains programmer-written +code), the destructor will be automatically registered as the object's +initial clean-up function. + +There is no guarantee that the collector will detect every unreachable +object (though it will find almost all of them). Clients should not +rely on clean-up to cause some action to occur immediately -- clean-up +is only a mechanism for improving resource usage. + +Every object with a clean-up function also has a clean-up queue. When +the collector finds the object is unreachable, it enqueues it on its +queue. The clean-up function is applied when the object is removed +from the queue. By default, objects are enqueued on the garbage +collector's queue, and the collector removes all objects from its +queue after each collection. If a client supplies another queue for +objects, it is his responsibility to remove objects (and cause their +functions to be called) by polling it periodically. + +Clean-up queues allow clean-up functions accessing global data to +synchronize with the main program. Garbage collection can occur at any +time, and clean-ups invoked by the collector might access data in an +inconsistent state. A client can control this by defining an explicit +queue for objects and polling it at safe points. + +The following definitions are used by the specification below: + +Given a pointer t to a collected object, the base object BO(t) is the +value returned by new when it created the object. (Because of multiple +inheritance, t and BO(t) may not be the same address.) + +A weak pointer wp references an object *t if BO(wp.Pointer()) == +BO(t). + +***************************************************************************/ + +template< class T, class Data > class CleanUp { +public: + +static void Set( T* t, void c( Data* d, T* t ), Data* d = 0 ) + /* Sets the clean-up function of object BO(t) to be , + replacing any previously defined clean-up function for BO(t); c + and d can be null, but t cannot. Sets the clean-up queue for + BO(t) to be the collector's queue. When t is removed from its + clean-up queue, its clean-up will be applied by calling c(d, + t). It is an error if *t is not a collected object. */ + {_CleanUp_Set( t, c, d );} + +static void Call( T* t ) + /* Sets the new clean-up function for BO(t) to be null and, if the + old one is non-null, calls it immediately, even if BO(t) is + still reachable. Deactivates any weak pointers to BO(t). */ + {_CleanUp_Call( t );} + +class Queue {public: + Queue() + /* Constructs a new queue. */ + {this->head = _CleanUp_Queue_NewHead();} + + void Set( T* t ) + /* q.Set(t) sets the clean-up queue of BO(t) to be q. */ + {_CleanUp_Queue_Set( this->head, t );} + + int Call() + /* If q is non-empty, q.Call() removes the first object and + calls its clean-up function; does nothing if q is + empty. Returns true if there are more objects in the + queue. */ + {return _CleanUp_Queue_Call( this->head );} + + private: + void* head; + }; +}; + +/********************************************************************** + +Reachability and Clean-up + +An object O is reachable if it can be reached via a non-empty path of +normal pointers from the registers, stacks, global variables, or an +object with a non-null clean-up function (including O itself), +ignoring pointers from an object to itself. + +This definition of reachability ensures that if object B is accessible +from object A (and not vice versa) and if both A and B have clean-up +functions, then A will always be cleaned up before B. Note that as +long as an object with a clean-up function is contained in a cycle of +pointers, it will always be reachable and will never be cleaned up or +collected. + +When the collector finds an unreachable object with a null clean-up +function, it atomically deactivates all weak pointers referencing the +object and recycles its storage. If object B is accessible from object +A via a path of normal pointers, A will be discovered unreachable no +later than B, and a weak pointer to A will be deactivated no later +than a weak pointer to B. + +When the collector finds an unreachable object with a non-null +clean-up function, the collector atomically deactivates all weak +pointers referencing the object, redefines its clean-up function to be +null, and enqueues it on its clean-up queue. The object then becomes +reachable again and remains reachable at least until its clean-up +function executes. + +The clean-up function is assured that its argument is the only +accessible pointer to the object. Nothing prevents the function from +redefining the object's clean-up function or making the object +reachable again (for example, by storing the pointer in a global +variable). + +If the clean-up function does not make its object reachable again and +does not redefine its clean-up function, then the object will be +collected by a subsequent collection (because the object remains +unreachable and now has a null clean-up function). If the clean-up +function does make its object reachable again and a clean-up function +is subsequently redefined for the object, then the new clean-up +function will be invoked the next time the collector finds the object +unreachable. + +Note that a destructor for a collected object cannot safely redefine a +clean-up function for its object, since after the destructor executes, +the object has been destroyed into "raw memory". (In most +implementations, destroying an object mutates its vtbl.) + +Finally, note that calling delete t on a collected object first +deactivates any weak pointers to t and then invokes its clean-up +function (destructor). + +**********************************************************************/ + +extern "C" { + void* _WeakPointer_New( void* t ); + void* _WeakPointer_Pointer( void* wp ); + int _WeakPointer_Equal( void* wp1, void* wp2 ); + int _WeakPointer_Hash( void* wp ); + void _CleanUp_Set( void* t, void (*c)( void* d, void* t ), void* d ); + void _CleanUp_Call( void* t ); + void* _CleanUp_Queue_NewHead (); + void _CleanUp_Queue_Set( void* h, void* t ); + int _CleanUp_Queue_Call( void* h ); +} + +#endif /* _weakpointer_h_ */ diff --git a/install-sh b/install-sh new file mode 100755 index 0000000..0b0fdcb --- /dev/null +++ b/install-sh @@ -0,0 +1,501 @@ +#!/bin/sh +# install - install a program, script, or datafile + +scriptversion=2013-12-25.23; # UTC + +# This originates from X11R5 (mit/util/scripts/install.sh), which was +# later released in X11R6 (xc/config/util/install.sh) with the +# following copyright and license. +# +# Copyright (C) 1994 X Consortium +# +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to +# deal in the Software without restriction, including without limitation the +# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +# sell copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- +# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +# +# Except as contained in this notice, the name of the X Consortium shall not +# be used in advertising or otherwise to promote the sale, use or other deal- +# ings in this Software without prior written authorization from the X Consor- +# tium. +# +# +# FSF changes to this file are in the public domain. +# +# Calling this script install-sh is preferred over install.sh, to prevent +# 'make' implicit rules from creating a file called install from it +# when there is no Makefile. +# +# This script is compatible with the BSD install script, but was written +# from scratch. + +tab=' ' +nl=' +' +IFS=" $tab$nl" + +# Set DOITPROG to "echo" to test this script. + +doit=${DOITPROG-} +doit_exec=${doit:-exec} + +# Put in absolute file names if you don't have them in your path; +# or use environment vars. + +chgrpprog=${CHGRPPROG-chgrp} +chmodprog=${CHMODPROG-chmod} +chownprog=${CHOWNPROG-chown} +cmpprog=${CMPPROG-cmp} +cpprog=${CPPROG-cp} +mkdirprog=${MKDIRPROG-mkdir} +mvprog=${MVPROG-mv} +rmprog=${RMPROG-rm} +stripprog=${STRIPPROG-strip} + +posix_mkdir= + +# Desired mode of installed file. +mode=0755 + +chgrpcmd= +chmodcmd=$chmodprog +chowncmd= +mvcmd=$mvprog +rmcmd="$rmprog -f" +stripcmd= + +src= +dst= +dir_arg= +dst_arg= + +copy_on_change=false +is_target_a_directory=possibly + +usage="\ +Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE + or: $0 [OPTION]... SRCFILES... DIRECTORY + or: $0 [OPTION]... -t DIRECTORY SRCFILES... + or: $0 [OPTION]... -d DIRECTORIES... + +In the 1st form, copy SRCFILE to DSTFILE. +In the 2nd and 3rd, copy all SRCFILES to DIRECTORY. +In the 4th, create DIRECTORIES. + +Options: + --help display this help and exit. + --version display version info and exit. + + -c (ignored) + -C install only if different (preserve the last data modification time) + -d create directories instead of installing files. + -g GROUP $chgrpprog installed files to GROUP. + -m MODE $chmodprog installed files to MODE. + -o USER $chownprog installed files to USER. + -s $stripprog installed files. + -t DIRECTORY install into DIRECTORY. + -T report an error if DSTFILE is a directory. + +Environment variables override the default commands: + CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG + RMPROG STRIPPROG +" + +while test $# -ne 0; do + case $1 in + -c) ;; + + -C) copy_on_change=true;; + + -d) dir_arg=true;; + + -g) chgrpcmd="$chgrpprog $2" + shift;; + + --help) echo "$usage"; exit $?;; + + -m) mode=$2 + case $mode in + *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*) + echo "$0: invalid mode: $mode" >&2 + exit 1;; + esac + shift;; + + -o) chowncmd="$chownprog $2" + shift;; + + -s) stripcmd=$stripprog;; + + -t) + is_target_a_directory=always + dst_arg=$2 + # Protect names problematic for 'test' and other utilities. + case $dst_arg in + -* | [=\(\)!]) dst_arg=./$dst_arg;; + esac + shift;; + + -T) is_target_a_directory=never;; + + --version) echo "$0 $scriptversion"; exit $?;; + + --) shift + break;; + + -*) echo "$0: invalid option: $1" >&2 + exit 1;; + + *) break;; + esac + shift +done + +# We allow the use of options -d and -T together, by making -d +# take the precedence; this is for compatibility with GNU install. + +if test -n "$dir_arg"; then + if test -n "$dst_arg"; then + echo "$0: target directory not allowed when installing a directory." >&2 + exit 1 + fi +fi + +if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then + # When -d is used, all remaining arguments are directories to create. + # When -t is used, the destination is already specified. + # Otherwise, the last argument is the destination. Remove it from $@. + for arg + do + if test -n "$dst_arg"; then + # $@ is not empty: it contains at least $arg. + set fnord "$@" "$dst_arg" + shift # fnord + fi + shift # arg + dst_arg=$arg + # Protect names problematic for 'test' and other utilities. + case $dst_arg in + -* | [=\(\)!]) dst_arg=./$dst_arg;; + esac + done +fi + +if test $# -eq 0; then + if test -z "$dir_arg"; then + echo "$0: no input file specified." >&2 + exit 1 + fi + # It's OK to call 'install-sh -d' without argument. + # This can happen when creating conditional directories. + exit 0 +fi + +if test -z "$dir_arg"; then + if test $# -gt 1 || test "$is_target_a_directory" = always; then + if test ! -d "$dst_arg"; then + echo "$0: $dst_arg: Is not a directory." >&2 + exit 1 + fi + fi +fi + +if test -z "$dir_arg"; then + do_exit='(exit $ret); exit $ret' + trap "ret=129; $do_exit" 1 + trap "ret=130; $do_exit" 2 + trap "ret=141; $do_exit" 13 + trap "ret=143; $do_exit" 15 + + # Set umask so as not to create temps with too-generous modes. + # However, 'strip' requires both read and write access to temps. + case $mode in + # Optimize common cases. + *644) cp_umask=133;; + *755) cp_umask=22;; + + *[0-7]) + if test -z "$stripcmd"; then + u_plus_rw= + else + u_plus_rw='% 200' + fi + cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;; + *) + if test -z "$stripcmd"; then + u_plus_rw= + else + u_plus_rw=,u+rw + fi + cp_umask=$mode$u_plus_rw;; + esac +fi + +for src +do + # Protect names problematic for 'test' and other utilities. + case $src in + -* | [=\(\)!]) src=./$src;; + esac + + if test -n "$dir_arg"; then + dst=$src + dstdir=$dst + test -d "$dstdir" + dstdir_status=$? + else + + # Waiting for this to be detected by the "$cpprog $src $dsttmp" command + # might cause directories to be created, which would be especially bad + # if $src (and thus $dsttmp) contains '*'. + if test ! -f "$src" && test ! -d "$src"; then + echo "$0: $src does not exist." >&2 + exit 1 + fi + + if test -z "$dst_arg"; then + echo "$0: no destination specified." >&2 + exit 1 + fi + dst=$dst_arg + + # If destination is a directory, append the input filename; won't work + # if double slashes aren't ignored. + if test -d "$dst"; then + if test "$is_target_a_directory" = never; then + echo "$0: $dst_arg: Is a directory" >&2 + exit 1 + fi + dstdir=$dst + dst=$dstdir/`basename "$src"` + dstdir_status=0 + else + dstdir=`dirname "$dst"` + test -d "$dstdir" + dstdir_status=$? + fi + fi + + obsolete_mkdir_used=false + + if test $dstdir_status != 0; then + case $posix_mkdir in + '') + # Create intermediate dirs using mode 755 as modified by the umask. + # This is like FreeBSD 'install' as of 1997-10-28. + umask=`umask` + case $stripcmd.$umask in + # Optimize common cases. + *[2367][2367]) mkdir_umask=$umask;; + .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;; + + *[0-7]) + mkdir_umask=`expr $umask + 22 \ + - $umask % 100 % 40 + $umask % 20 \ + - $umask % 10 % 4 + $umask % 2 + `;; + *) mkdir_umask=$umask,go-w;; + esac + + # With -d, create the new directory with the user-specified mode. + # Otherwise, rely on $mkdir_umask. + if test -n "$dir_arg"; then + mkdir_mode=-m$mode + else + mkdir_mode= + fi + + posix_mkdir=false + case $umask in + *[123567][0-7][0-7]) + # POSIX mkdir -p sets u+wx bits regardless of umask, which + # is incompatible with FreeBSD 'install' when (umask & 300) != 0. + ;; + *) + tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$ + trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0 + + if (umask $mkdir_umask && + exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1 + then + if test -z "$dir_arg" || { + # Check for POSIX incompatibilities with -m. + # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or + # other-writable bit of parent directory when it shouldn't. + # FreeBSD 6.1 mkdir -m -p sets mode of existing directory. + ls_ld_tmpdir=`ls -ld "$tmpdir"` + case $ls_ld_tmpdir in + d????-?r-*) different_mode=700;; + d????-?--*) different_mode=755;; + *) false;; + esac && + $mkdirprog -m$different_mode -p -- "$tmpdir" && { + ls_ld_tmpdir_1=`ls -ld "$tmpdir"` + test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1" + } + } + then posix_mkdir=: + fi + rmdir "$tmpdir/d" "$tmpdir" + else + # Remove any dirs left behind by ancient mkdir implementations. + rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null + fi + trap '' 0;; + esac;; + esac + + if + $posix_mkdir && ( + umask $mkdir_umask && + $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir" + ) + then : + else + + # The umask is ridiculous, or mkdir does not conform to POSIX, + # or it failed possibly due to a race condition. Create the + # directory the slow way, step by step, checking for races as we go. + + case $dstdir in + /*) prefix='/';; + [-=\(\)!]*) prefix='./';; + *) prefix='';; + esac + + oIFS=$IFS + IFS=/ + set -f + set fnord $dstdir + shift + set +f + IFS=$oIFS + + prefixes= + + for d + do + test X"$d" = X && continue + + prefix=$prefix$d + if test -d "$prefix"; then + prefixes= + else + if $posix_mkdir; then + (umask=$mkdir_umask && + $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break + # Don't fail if two instances are running concurrently. + test -d "$prefix" || exit 1 + else + case $prefix in + *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;; + *) qprefix=$prefix;; + esac + prefixes="$prefixes '$qprefix'" + fi + fi + prefix=$prefix/ + done + + if test -n "$prefixes"; then + # Don't fail if two instances are running concurrently. + (umask $mkdir_umask && + eval "\$doit_exec \$mkdirprog $prefixes") || + test -d "$dstdir" || exit 1 + obsolete_mkdir_used=true + fi + fi + fi + + if test -n "$dir_arg"; then + { test -z "$chowncmd" || $doit $chowncmd "$dst"; } && + { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } && + { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false || + test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1 + else + + # Make a couple of temp file names in the proper directory. + dsttmp=$dstdir/_inst.$$_ + rmtmp=$dstdir/_rm.$$_ + + # Trap to clean up those temp files at exit. + trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0 + + # Copy the file name to the temp name. + (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") && + + # and set any options; do chmod last to preserve setuid bits. + # + # If any of these fail, we abort the whole thing. If we want to + # ignore errors from any of these, just make sure not to ignore + # errors from the above "$doit $cpprog $src $dsttmp" command. + # + { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } && + { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } && + { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } && + { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } && + + # If -C, don't bother to copy if it wouldn't change the file. + if $copy_on_change && + old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` && + new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` && + set -f && + set X $old && old=:$2:$4:$5:$6 && + set X $new && new=:$2:$4:$5:$6 && + set +f && + test "$old" = "$new" && + $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1 + then + rm -f "$dsttmp" + else + # Rename the file to the real destination. + $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null || + + # The rename failed, perhaps because mv can't rename something else + # to itself, or perhaps because mv is so ancient that it does not + # support -f. + { + # Now remove or move aside any old file at destination location. + # We try this two ways since rm can't unlink itself on some + # systems and the destination file might be busy for other + # reasons. In this case, the final cleanup might fail but the new + # file should still install successfully. + { + test ! -f "$dst" || + $doit $rmcmd -f "$dst" 2>/dev/null || + { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null && + { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; } + } || + { echo "$0: cannot unlink or rename $dst" >&2 + (exit 1); exit 1 + } + } && + + # Now rename the file to the real destination. + $doit $mvcmd "$dsttmp" "$dst" + } + fi || exit 1 + + trap '' 0 + fi +done + +# Local variables: +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "scriptversion=" +# time-stamp-format: "%:y-%02m-%02d.%02H" +# time-stamp-time-zone: "UTC" +# time-stamp-end: "; # UTC" +# End: diff --git a/ltmain.sh b/ltmain.sh new file mode 100644 index 0000000..0f0a2da --- /dev/null +++ b/ltmain.sh @@ -0,0 +1,11147 @@ +#! /bin/sh +## DO NOT EDIT - This file generated from ./build-aux/ltmain.in +## by inline-source v2014-01-03.01 + +# libtool (GNU libtool) 2.4.6 +# Provide generalized library-building support services. +# Written by Gordon Matzigkeit , 1996 + +# Copyright (C) 1996-2015 Free Software Foundation, Inc. +# This is free software; see the source for copying conditions. There is NO +# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + +# GNU Libtool is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# As a special exception to the GNU General Public License, +# if you distribute this file as part of a program or library that +# is built using GNU Libtool, you may include this file under the +# same distribution terms that you use for the rest of that program. +# +# GNU Libtool is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + + +PROGRAM=libtool +PACKAGE=libtool +VERSION=2.4.6 +package_revision=2.4.6 + + +## ------ ## +## Usage. ## +## ------ ## + +# Run './libtool --help' for help with using this script from the +# command line. + + +## ------------------------------- ## +## User overridable command paths. ## +## ------------------------------- ## + +# After configure completes, it has a better idea of some of the +# shell tools we need than the defaults used by the functions shared +# with bootstrap, so set those here where they can still be over- +# ridden by the user, but otherwise take precedence. + +: ${AUTOCONF="autoconf"} +: ${AUTOMAKE="automake"} + + +## -------------------------- ## +## Source external libraries. ## +## -------------------------- ## + +# Much of our low-level functionality needs to be sourced from external +# libraries, which are installed to $pkgauxdir. + +# Set a version string for this script. +scriptversion=2015-01-20.17; # UTC + +# General shell script boiler plate, and helper functions. +# Written by Gary V. Vaughan, 2004 + +# Copyright (C) 2004-2015 Free Software Foundation, Inc. +# This is free software; see the source for copying conditions. There is NO +# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. + +# As a special exception to the GNU General Public License, if you distribute +# this file as part of a program or library that is built using GNU Libtool, +# you may include this file under the same distribution terms that you use +# for the rest of that program. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNES FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# Please report bugs or propose patches to gary@gnu.org. + + +## ------ ## +## Usage. ## +## ------ ## + +# Evaluate this file near the top of your script to gain access to +# the functions and variables defined here: +# +# . `echo "$0" | ${SED-sed} 's|[^/]*$||'`/build-aux/funclib.sh +# +# If you need to override any of the default environment variable +# settings, do that before evaluating this file. + + +## -------------------- ## +## Shell normalisation. ## +## -------------------- ## + +# Some shells need a little help to be as Bourne compatible as possible. +# Before doing anything else, make sure all that help has been provided! + +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in *posix*) set -o posix ;; esac +fi + +# NLS nuisances: We save the old values in case they are required later. +_G_user_locale= +_G_safe_locale= +for _G_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES +do + eval "if test set = \"\${$_G_var+set}\"; then + save_$_G_var=\$$_G_var + $_G_var=C + export $_G_var + _G_user_locale=\"$_G_var=\\\$save_\$_G_var; \$_G_user_locale\" + _G_safe_locale=\"$_G_var=C; \$_G_safe_locale\" + fi" +done + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +# Make sure IFS has a sensible default +sp=' ' +nl=' +' +IFS="$sp $nl" + +# There are apparently some retarded systems that use ';' as a PATH separator! +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + + +## ------------------------- ## +## Locate command utilities. ## +## ------------------------- ## + + +# func_executable_p FILE +# ---------------------- +# Check that FILE is an executable regular file. +func_executable_p () +{ + test -f "$1" && test -x "$1" +} + + +# func_path_progs PROGS_LIST CHECK_FUNC [PATH] +# -------------------------------------------- +# Search for either a program that responds to --version with output +# containing "GNU", or else returned by CHECK_FUNC otherwise, by +# trying all the directories in PATH with each of the elements of +# PROGS_LIST. +# +# CHECK_FUNC should accept the path to a candidate program, and +# set $func_check_prog_result if it truncates its output less than +# $_G_path_prog_max characters. +func_path_progs () +{ + _G_progs_list=$1 + _G_check_func=$2 + _G_PATH=${3-"$PATH"} + + _G_path_prog_max=0 + _G_path_prog_found=false + _G_save_IFS=$IFS; IFS=${PATH_SEPARATOR-:} + for _G_dir in $_G_PATH; do + IFS=$_G_save_IFS + test -z "$_G_dir" && _G_dir=. + for _G_prog_name in $_G_progs_list; do + for _exeext in '' .EXE; do + _G_path_prog=$_G_dir/$_G_prog_name$_exeext + func_executable_p "$_G_path_prog" || continue + case `"$_G_path_prog" --version 2>&1` in + *GNU*) func_path_progs_result=$_G_path_prog _G_path_prog_found=: ;; + *) $_G_check_func $_G_path_prog + func_path_progs_result=$func_check_prog_result + ;; + esac + $_G_path_prog_found && break 3 + done + done + done + IFS=$_G_save_IFS + test -z "$func_path_progs_result" && { + echo "no acceptable sed could be found in \$PATH" >&2 + exit 1 + } +} + + +# We want to be able to use the functions in this file before configure +# has figured out where the best binaries are kept, which means we have +# to search for them ourselves - except when the results are already set +# where we skip the searches. + +# Unless the user overrides by setting SED, search the path for either GNU +# sed, or the sed that truncates its output the least. +test -z "$SED" && { + _G_sed_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/ + for _G_i in 1 2 3 4 5 6 7; do + _G_sed_script=$_G_sed_script$nl$_G_sed_script + done + echo "$_G_sed_script" 2>/dev/null | sed 99q >conftest.sed + _G_sed_script= + + func_check_prog_sed () + { + _G_path_prog=$1 + + _G_count=0 + printf 0123456789 >conftest.in + while : + do + cat conftest.in conftest.in >conftest.tmp + mv conftest.tmp conftest.in + cp conftest.in conftest.nl + echo '' >> conftest.nl + "$_G_path_prog" -f conftest.sed conftest.out 2>/dev/null || break + diff conftest.out conftest.nl >/dev/null 2>&1 || break + _G_count=`expr $_G_count + 1` + if test "$_G_count" -gt "$_G_path_prog_max"; then + # Best one so far, save it but keep looking for a better one + func_check_prog_result=$_G_path_prog + _G_path_prog_max=$_G_count + fi + # 10*(2^10) chars as input seems more than enough + test 10 -lt "$_G_count" && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out + } + + func_path_progs "sed gsed" func_check_prog_sed $PATH:/usr/xpg4/bin + rm -f conftest.sed + SED=$func_path_progs_result +} + + +# Unless the user overrides by setting GREP, search the path for either GNU +# grep, or the grep that truncates its output the least. +test -z "$GREP" && { + func_check_prog_grep () + { + _G_path_prog=$1 + + _G_count=0 + _G_path_prog_max=0 + printf 0123456789 >conftest.in + while : + do + cat conftest.in conftest.in >conftest.tmp + mv conftest.tmp conftest.in + cp conftest.in conftest.nl + echo 'GREP' >> conftest.nl + "$_G_path_prog" -e 'GREP$' -e '-(cannot match)-' conftest.out 2>/dev/null || break + diff conftest.out conftest.nl >/dev/null 2>&1 || break + _G_count=`expr $_G_count + 1` + if test "$_G_count" -gt "$_G_path_prog_max"; then + # Best one so far, save it but keep looking for a better one + func_check_prog_result=$_G_path_prog + _G_path_prog_max=$_G_count + fi + # 10*(2^10) chars as input seems more than enough + test 10 -lt "$_G_count" && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out + } + + func_path_progs "grep ggrep" func_check_prog_grep $PATH:/usr/xpg4/bin + GREP=$func_path_progs_result +} + + +## ------------------------------- ## +## User overridable command paths. ## +## ------------------------------- ## + +# All uppercase variable names are used for environment variables. These +# variables can be overridden by the user before calling a script that +# uses them if a suitable command of that name is not already available +# in the command search PATH. + +: ${CP="cp -f"} +: ${ECHO="printf %s\n"} +: ${EGREP="$GREP -E"} +: ${FGREP="$GREP -F"} +: ${LN_S="ln -s"} +: ${MAKE="make"} +: ${MKDIR="mkdir"} +: ${MV="mv -f"} +: ${RM="rm -f"} +: ${SHELL="${CONFIG_SHELL-/bin/sh}"} + + +## -------------------- ## +## Useful sed snippets. ## +## -------------------- ## + +sed_dirname='s|/[^/]*$||' +sed_basename='s|^.*/||' + +# Sed substitution that helps us do robust quoting. It backslashifies +# metacharacters that are still active within double-quoted strings. +sed_quote_subst='s|\([`"$\\]\)|\\\1|g' + +# Same as above, but do not quote variable references. +sed_double_quote_subst='s/\(["`\\]\)/\\\1/g' + +# Sed substitution that turns a string into a regex matching for the +# string literally. +sed_make_literal_regex='s|[].[^$\\*\/]|\\&|g' + +# Sed substitution that converts a w32 file name or path +# that contains forward slashes, into one that contains +# (escaped) backslashes. A very naive implementation. +sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g' + +# Re-'\' parameter expansions in output of sed_double_quote_subst that +# were '\'-ed in input to the same. If an odd number of '\' preceded a +# '$' in input to sed_double_quote_subst, that '$' was protected from +# expansion. Since each input '\' is now two '\'s, look for any number +# of runs of four '\'s followed by two '\'s and then a '$'. '\' that '$'. +_G_bs='\\' +_G_bs2='\\\\' +_G_bs4='\\\\\\\\' +_G_dollar='\$' +sed_double_backslash="\ + s/$_G_bs4/&\\ +/g + s/^$_G_bs2$_G_dollar/$_G_bs&/ + s/\\([^$_G_bs]\\)$_G_bs2$_G_dollar/\\1$_G_bs2$_G_bs$_G_dollar/g + s/\n//g" + + +## ----------------- ## +## Global variables. ## +## ----------------- ## + +# Except for the global variables explicitly listed below, the following +# functions in the '^func_' namespace, and the '^require_' namespace +# variables initialised in the 'Resource management' section, sourcing +# this file will not pollute your global namespace with anything +# else. There's no portable way to scope variables in Bourne shell +# though, so actually running these functions will sometimes place +# results into a variable named after the function, and often use +# temporary variables in the '^_G_' namespace. If you are careful to +# avoid using those namespaces casually in your sourcing script, things +# should continue to work as you expect. And, of course, you can freely +# overwrite any of the functions or variables defined here before +# calling anything to customize them. + +EXIT_SUCCESS=0 +EXIT_FAILURE=1 +EXIT_MISMATCH=63 # $? = 63 is used to indicate version mismatch to missing. +EXIT_SKIP=77 # $? = 77 is used to indicate a skipped test to automake. + +# Allow overriding, eg assuming that you follow the convention of +# putting '$debug_cmd' at the start of all your functions, you can get +# bash to show function call trace with: +# +# debug_cmd='eval echo "${FUNCNAME[0]} $*" >&2' bash your-script-name +debug_cmd=${debug_cmd-":"} +exit_cmd=: + +# By convention, finish your script with: +# +# exit $exit_status +# +# so that you can set exit_status to non-zero if you want to indicate +# something went wrong during execution without actually bailing out at +# the point of failure. +exit_status=$EXIT_SUCCESS + +# Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh +# is ksh but when the shell is invoked as "sh" and the current value of +# the _XPG environment variable is not equal to 1 (one), the special +# positional parameter $0, within a function call, is the name of the +# function. +progpath=$0 + +# The name of this program. +progname=`$ECHO "$progpath" |$SED "$sed_basename"` + +# Make sure we have an absolute progpath for reexecution: +case $progpath in + [\\/]*|[A-Za-z]:\\*) ;; + *[\\/]*) + progdir=`$ECHO "$progpath" |$SED "$sed_dirname"` + progdir=`cd "$progdir" && pwd` + progpath=$progdir/$progname + ;; + *) + _G_IFS=$IFS + IFS=${PATH_SEPARATOR-:} + for progdir in $PATH; do + IFS=$_G_IFS + test -x "$progdir/$progname" && break + done + IFS=$_G_IFS + test -n "$progdir" || progdir=`pwd` + progpath=$progdir/$progname + ;; +esac + + +## ----------------- ## +## Standard options. ## +## ----------------- ## + +# The following options affect the operation of the functions defined +# below, and should be set appropriately depending on run-time para- +# meters passed on the command line. + +opt_dry_run=false +opt_quiet=false +opt_verbose=false + +# Categories 'all' and 'none' are always available. Append any others +# you will pass as the first argument to func_warning from your own +# code. +warning_categories= + +# By default, display warnings according to 'opt_warning_types'. Set +# 'warning_func' to ':' to elide all warnings, or func_fatal_error to +# treat the next displayed warning as a fatal error. +warning_func=func_warn_and_continue + +# Set to 'all' to display all warnings, 'none' to suppress all +# warnings, or a space delimited list of some subset of +# 'warning_categories' to display only the listed warnings. +opt_warning_types=all + + +## -------------------- ## +## Resource management. ## +## -------------------- ## + +# This section contains definitions for functions that each ensure a +# particular resource (a file, or a non-empty configuration variable for +# example) is available, and if appropriate to extract default values +# from pertinent package files. Call them using their associated +# 'require_*' variable to ensure that they are executed, at most, once. +# +# It's entirely deliberate that calling these functions can set +# variables that don't obey the namespace limitations obeyed by the rest +# of this file, in order that that they be as useful as possible to +# callers. + + +# require_term_colors +# ------------------- +# Allow display of bold text on terminals that support it. +require_term_colors=func_require_term_colors +func_require_term_colors () +{ + $debug_cmd + + test -t 1 && { + # COLORTERM and USE_ANSI_COLORS environment variables take + # precedence, because most terminfo databases neglect to describe + # whether color sequences are supported. + test -n "${COLORTERM+set}" && : ${USE_ANSI_COLORS="1"} + + if test 1 = "$USE_ANSI_COLORS"; then + # Standard ANSI escape sequences + tc_reset='' + tc_bold=''; tc_standout='' + tc_red=''; tc_green='' + tc_blue=''; tc_cyan='' + else + # Otherwise trust the terminfo database after all. + test -n "`tput sgr0 2>/dev/null`" && { + tc_reset=`tput sgr0` + test -n "`tput bold 2>/dev/null`" && tc_bold=`tput bold` + tc_standout=$tc_bold + test -n "`tput smso 2>/dev/null`" && tc_standout=`tput smso` + test -n "`tput setaf 1 2>/dev/null`" && tc_red=`tput setaf 1` + test -n "`tput setaf 2 2>/dev/null`" && tc_green=`tput setaf 2` + test -n "`tput setaf 4 2>/dev/null`" && tc_blue=`tput setaf 4` + test -n "`tput setaf 5 2>/dev/null`" && tc_cyan=`tput setaf 5` + } + fi + } + + require_term_colors=: +} + + +## ----------------- ## +## Function library. ## +## ----------------- ## + +# This section contains a variety of useful functions to call in your +# scripts. Take note of the portable wrappers for features provided by +# some modern shells, which will fall back to slower equivalents on +# less featureful shells. + + +# func_append VAR VALUE +# --------------------- +# Append VALUE onto the existing contents of VAR. + + # We should try to minimise forks, especially on Windows where they are + # unreasonably slow, so skip the feature probes when bash or zsh are + # being used: + if test set = "${BASH_VERSION+set}${ZSH_VERSION+set}"; then + : ${_G_HAVE_ARITH_OP="yes"} + : ${_G_HAVE_XSI_OPS="yes"} + # The += operator was introduced in bash 3.1 + case $BASH_VERSION in + [12].* | 3.0 | 3.0*) ;; + *) + : ${_G_HAVE_PLUSEQ_OP="yes"} + ;; + esac + fi + + # _G_HAVE_PLUSEQ_OP + # Can be empty, in which case the shell is probed, "yes" if += is + # useable or anything else if it does not work. + test -z "$_G_HAVE_PLUSEQ_OP" \ + && (eval 'x=a; x+=" b"; test "a b" = "$x"') 2>/dev/null \ + && _G_HAVE_PLUSEQ_OP=yes + +if test yes = "$_G_HAVE_PLUSEQ_OP" +then + # This is an XSI compatible shell, allowing a faster implementation... + eval 'func_append () + { + $debug_cmd + + eval "$1+=\$2" + }' +else + # ...otherwise fall back to using expr, which is often a shell builtin. + func_append () + { + $debug_cmd + + eval "$1=\$$1\$2" + } +fi + + +# func_append_quoted VAR VALUE +# ---------------------------- +# Quote VALUE and append to the end of shell variable VAR, separated +# by a space. +if test yes = "$_G_HAVE_PLUSEQ_OP"; then + eval 'func_append_quoted () + { + $debug_cmd + + func_quote_for_eval "$2" + eval "$1+=\\ \$func_quote_for_eval_result" + }' +else + func_append_quoted () + { + $debug_cmd + + func_quote_for_eval "$2" + eval "$1=\$$1\\ \$func_quote_for_eval_result" + } +fi + + +# func_append_uniq VAR VALUE +# -------------------------- +# Append unique VALUE onto the existing contents of VAR, assuming +# entries are delimited by the first character of VALUE. For example: +# +# func_append_uniq options " --another-option option-argument" +# +# will only append to $options if " --another-option option-argument " +# is not already present somewhere in $options already (note spaces at +# each end implied by leading space in second argument). +func_append_uniq () +{ + $debug_cmd + + eval _G_current_value='`$ECHO $'$1'`' + _G_delim=`expr "$2" : '\(.\)'` + + case $_G_delim$_G_current_value$_G_delim in + *"$2$_G_delim"*) ;; + *) func_append "$@" ;; + esac +} + + +# func_arith TERM... +# ------------------ +# Set func_arith_result to the result of evaluating TERMs. + test -z "$_G_HAVE_ARITH_OP" \ + && (eval 'test 2 = $(( 1 + 1 ))') 2>/dev/null \ + && _G_HAVE_ARITH_OP=yes + +if test yes = "$_G_HAVE_ARITH_OP"; then + eval 'func_arith () + { + $debug_cmd + + func_arith_result=$(( $* )) + }' +else + func_arith () + { + $debug_cmd + + func_arith_result=`expr "$@"` + } +fi + + +# func_basename FILE +# ------------------ +# Set func_basename_result to FILE with everything up to and including +# the last / stripped. +if test yes = "$_G_HAVE_XSI_OPS"; then + # If this shell supports suffix pattern removal, then use it to avoid + # forking. Hide the definitions single quotes in case the shell chokes + # on unsupported syntax... + _b='func_basename_result=${1##*/}' + _d='case $1 in + */*) func_dirname_result=${1%/*}$2 ;; + * ) func_dirname_result=$3 ;; + esac' + +else + # ...otherwise fall back to using sed. + _b='func_basename_result=`$ECHO "$1" |$SED "$sed_basename"`' + _d='func_dirname_result=`$ECHO "$1" |$SED "$sed_dirname"` + if test "X$func_dirname_result" = "X$1"; then + func_dirname_result=$3 + else + func_append func_dirname_result "$2" + fi' +fi + +eval 'func_basename () +{ + $debug_cmd + + '"$_b"' +}' + + +# func_dirname FILE APPEND NONDIR_REPLACEMENT +# ------------------------------------------- +# Compute the dirname of FILE. If nonempty, add APPEND to the result, +# otherwise set result to NONDIR_REPLACEMENT. +eval 'func_dirname () +{ + $debug_cmd + + '"$_d"' +}' + + +# func_dirname_and_basename FILE APPEND NONDIR_REPLACEMENT +# -------------------------------------------------------- +# Perform func_basename and func_dirname in a single function +# call: +# dirname: Compute the dirname of FILE. If nonempty, +# add APPEND to the result, otherwise set result +# to NONDIR_REPLACEMENT. +# value returned in "$func_dirname_result" +# basename: Compute filename of FILE. +# value retuned in "$func_basename_result" +# For efficiency, we do not delegate to the functions above but instead +# duplicate the functionality here. +eval 'func_dirname_and_basename () +{ + $debug_cmd + + '"$_b"' + '"$_d"' +}' + + +# func_echo ARG... +# ---------------- +# Echo program name prefixed message. +func_echo () +{ + $debug_cmd + + _G_message=$* + + func_echo_IFS=$IFS + IFS=$nl + for _G_line in $_G_message; do + IFS=$func_echo_IFS + $ECHO "$progname: $_G_line" + done + IFS=$func_echo_IFS +} + + +# func_echo_all ARG... +# -------------------- +# Invoke $ECHO with all args, space-separated. +func_echo_all () +{ + $ECHO "$*" +} + + +# func_echo_infix_1 INFIX ARG... +# ------------------------------ +# Echo program name, followed by INFIX on the first line, with any +# additional lines not showing INFIX. +func_echo_infix_1 () +{ + $debug_cmd + + $require_term_colors + + _G_infix=$1; shift + _G_indent=$_G_infix + _G_prefix="$progname: $_G_infix: " + _G_message=$* + + # Strip color escape sequences before counting printable length + for _G_tc in "$tc_reset" "$tc_bold" "$tc_standout" "$tc_red" "$tc_green" "$tc_blue" "$tc_cyan" + do + test -n "$_G_tc" && { + _G_esc_tc=`$ECHO "$_G_tc" | $SED "$sed_make_literal_regex"` + _G_indent=`$ECHO "$_G_indent" | $SED "s|$_G_esc_tc||g"` + } + done + _G_indent="$progname: "`echo "$_G_indent" | $SED 's|.| |g'`" " ## exclude from sc_prohibit_nested_quotes + + func_echo_infix_1_IFS=$IFS + IFS=$nl + for _G_line in $_G_message; do + IFS=$func_echo_infix_1_IFS + $ECHO "$_G_prefix$tc_bold$_G_line$tc_reset" >&2 + _G_prefix=$_G_indent + done + IFS=$func_echo_infix_1_IFS +} + + +# func_error ARG... +# ----------------- +# Echo program name prefixed message to standard error. +func_error () +{ + $debug_cmd + + $require_term_colors + + func_echo_infix_1 " $tc_standout${tc_red}error$tc_reset" "$*" >&2 +} + + +# func_fatal_error ARG... +# ----------------------- +# Echo program name prefixed message to standard error, and exit. +func_fatal_error () +{ + $debug_cmd + + func_error "$*" + exit $EXIT_FAILURE +} + + +# func_grep EXPRESSION FILENAME +# ----------------------------- +# Check whether EXPRESSION matches any line of FILENAME, without output. +func_grep () +{ + $debug_cmd + + $GREP "$1" "$2" >/dev/null 2>&1 +} + + +# func_len STRING +# --------------- +# Set func_len_result to the length of STRING. STRING may not +# start with a hyphen. + test -z "$_G_HAVE_XSI_OPS" \ + && (eval 'x=a/b/c; + test 5aa/bb/cc = "${#x}${x%%/*}${x%/*}${x#*/}${x##*/}"') 2>/dev/null \ + && _G_HAVE_XSI_OPS=yes + +if test yes = "$_G_HAVE_XSI_OPS"; then + eval 'func_len () + { + $debug_cmd + + func_len_result=${#1} + }' +else + func_len () + { + $debug_cmd + + func_len_result=`expr "$1" : ".*" 2>/dev/null || echo $max_cmd_len` + } +fi + + +# func_mkdir_p DIRECTORY-PATH +# --------------------------- +# Make sure the entire path to DIRECTORY-PATH is available. +func_mkdir_p () +{ + $debug_cmd + + _G_directory_path=$1 + _G_dir_list= + + if test -n "$_G_directory_path" && test : != "$opt_dry_run"; then + + # Protect directory names starting with '-' + case $_G_directory_path in + -*) _G_directory_path=./$_G_directory_path ;; + esac + + # While some portion of DIR does not yet exist... + while test ! -d "$_G_directory_path"; do + # ...make a list in topmost first order. Use a colon delimited + # list incase some portion of path contains whitespace. + _G_dir_list=$_G_directory_path:$_G_dir_list + + # If the last portion added has no slash in it, the list is done + case $_G_directory_path in */*) ;; *) break ;; esac + + # ...otherwise throw away the child directory and loop + _G_directory_path=`$ECHO "$_G_directory_path" | $SED -e "$sed_dirname"` + done + _G_dir_list=`$ECHO "$_G_dir_list" | $SED 's|:*$||'` + + func_mkdir_p_IFS=$IFS; IFS=: + for _G_dir in $_G_dir_list; do + IFS=$func_mkdir_p_IFS + # mkdir can fail with a 'File exist' error if two processes + # try to create one of the directories concurrently. Don't + # stop in that case! + $MKDIR "$_G_dir" 2>/dev/null || : + done + IFS=$func_mkdir_p_IFS + + # Bail out if we (or some other process) failed to create a directory. + test -d "$_G_directory_path" || \ + func_fatal_error "Failed to create '$1'" + fi +} + + +# func_mktempdir [BASENAME] +# ------------------------- +# Make a temporary directory that won't clash with other running +# libtool processes, and avoids race conditions if possible. If +# given, BASENAME is the basename for that directory. +func_mktempdir () +{ + $debug_cmd + + _G_template=${TMPDIR-/tmp}/${1-$progname} + + if test : = "$opt_dry_run"; then + # Return a directory name, but don't create it in dry-run mode + _G_tmpdir=$_G_template-$$ + else + + # If mktemp works, use that first and foremost + _G_tmpdir=`mktemp -d "$_G_template-XXXXXXXX" 2>/dev/null` + + if test ! -d "$_G_tmpdir"; then + # Failing that, at least try and use $RANDOM to avoid a race + _G_tmpdir=$_G_template-${RANDOM-0}$$ + + func_mktempdir_umask=`umask` + umask 0077 + $MKDIR "$_G_tmpdir" + umask $func_mktempdir_umask + fi + + # If we're not in dry-run mode, bomb out on failure + test -d "$_G_tmpdir" || \ + func_fatal_error "cannot create temporary directory '$_G_tmpdir'" + fi + + $ECHO "$_G_tmpdir" +} + + +# func_normal_abspath PATH +# ------------------------ +# Remove doubled-up and trailing slashes, "." path components, +# and cancel out any ".." path components in PATH after making +# it an absolute path. +func_normal_abspath () +{ + $debug_cmd + + # These SED scripts presuppose an absolute path with a trailing slash. + _G_pathcar='s|^/\([^/]*\).*$|\1|' + _G_pathcdr='s|^/[^/]*||' + _G_removedotparts=':dotsl + s|/\./|/|g + t dotsl + s|/\.$|/|' + _G_collapseslashes='s|/\{1,\}|/|g' + _G_finalslash='s|/*$|/|' + + # Start from root dir and reassemble the path. + func_normal_abspath_result= + func_normal_abspath_tpath=$1 + func_normal_abspath_altnamespace= + case $func_normal_abspath_tpath in + "") + # Empty path, that just means $cwd. + func_stripname '' '/' "`pwd`" + func_normal_abspath_result=$func_stripname_result + return + ;; + # The next three entries are used to spot a run of precisely + # two leading slashes without using negated character classes; + # we take advantage of case's first-match behaviour. + ///*) + # Unusual form of absolute path, do nothing. + ;; + //*) + # Not necessarily an ordinary path; POSIX reserves leading '//' + # and for example Cygwin uses it to access remote file shares + # over CIFS/SMB, so we conserve a leading double slash if found. + func_normal_abspath_altnamespace=/ + ;; + /*) + # Absolute path, do nothing. + ;; + *) + # Relative path, prepend $cwd. + func_normal_abspath_tpath=`pwd`/$func_normal_abspath_tpath + ;; + esac + + # Cancel out all the simple stuff to save iterations. We also want + # the path to end with a slash for ease of parsing, so make sure + # there is one (and only one) here. + func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \ + -e "$_G_removedotparts" -e "$_G_collapseslashes" -e "$_G_finalslash"` + while :; do + # Processed it all yet? + if test / = "$func_normal_abspath_tpath"; then + # If we ascended to the root using ".." the result may be empty now. + if test -z "$func_normal_abspath_result"; then + func_normal_abspath_result=/ + fi + break + fi + func_normal_abspath_tcomponent=`$ECHO "$func_normal_abspath_tpath" | $SED \ + -e "$_G_pathcar"` + func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \ + -e "$_G_pathcdr"` + # Figure out what to do with it + case $func_normal_abspath_tcomponent in + "") + # Trailing empty path component, ignore it. + ;; + ..) + # Parent dir; strip last assembled component from result. + func_dirname "$func_normal_abspath_result" + func_normal_abspath_result=$func_dirname_result + ;; + *) + # Actual path component, append it. + func_append func_normal_abspath_result "/$func_normal_abspath_tcomponent" + ;; + esac + done + # Restore leading double-slash if one was found on entry. + func_normal_abspath_result=$func_normal_abspath_altnamespace$func_normal_abspath_result +} + + +# func_notquiet ARG... +# -------------------- +# Echo program name prefixed message only when not in quiet mode. +func_notquiet () +{ + $debug_cmd + + $opt_quiet || func_echo ${1+"$@"} + + # A bug in bash halts the script if the last line of a function + # fails when set -e is in force, so we need another command to + # work around that: + : +} + + +# func_relative_path SRCDIR DSTDIR +# -------------------------------- +# Set func_relative_path_result to the relative path from SRCDIR to DSTDIR. +func_relative_path () +{ + $debug_cmd + + func_relative_path_result= + func_normal_abspath "$1" + func_relative_path_tlibdir=$func_normal_abspath_result + func_normal_abspath "$2" + func_relative_path_tbindir=$func_normal_abspath_result + + # Ascend the tree starting from libdir + while :; do + # check if we have found a prefix of bindir + case $func_relative_path_tbindir in + $func_relative_path_tlibdir) + # found an exact match + func_relative_path_tcancelled= + break + ;; + $func_relative_path_tlibdir*) + # found a matching prefix + func_stripname "$func_relative_path_tlibdir" '' "$func_relative_path_tbindir" + func_relative_path_tcancelled=$func_stripname_result + if test -z "$func_relative_path_result"; then + func_relative_path_result=. + fi + break + ;; + *) + func_dirname $func_relative_path_tlibdir + func_relative_path_tlibdir=$func_dirname_result + if test -z "$func_relative_path_tlibdir"; then + # Have to descend all the way to the root! + func_relative_path_result=../$func_relative_path_result + func_relative_path_tcancelled=$func_relative_path_tbindir + break + fi + func_relative_path_result=../$func_relative_path_result + ;; + esac + done + + # Now calculate path; take care to avoid doubling-up slashes. + func_stripname '' '/' "$func_relative_path_result" + func_relative_path_result=$func_stripname_result + func_stripname '/' '/' "$func_relative_path_tcancelled" + if test -n "$func_stripname_result"; then + func_append func_relative_path_result "/$func_stripname_result" + fi + + # Normalisation. If bindir is libdir, return '.' else relative path. + if test -n "$func_relative_path_result"; then + func_stripname './' '' "$func_relative_path_result" + func_relative_path_result=$func_stripname_result + fi + + test -n "$func_relative_path_result" || func_relative_path_result=. + + : +} + + +# func_quote_for_eval ARG... +# -------------------------- +# Aesthetically quote ARGs to be evaled later. +# This function returns two values: +# i) func_quote_for_eval_result +# double-quoted, suitable for a subsequent eval +# ii) func_quote_for_eval_unquoted_result +# has all characters that are still active within double +# quotes backslashified. +func_quote_for_eval () +{ + $debug_cmd + + func_quote_for_eval_unquoted_result= + func_quote_for_eval_result= + while test 0 -lt $#; do + case $1 in + *[\\\`\"\$]*) + _G_unquoted_arg=`printf '%s\n' "$1" |$SED "$sed_quote_subst"` ;; + *) + _G_unquoted_arg=$1 ;; + esac + if test -n "$func_quote_for_eval_unquoted_result"; then + func_append func_quote_for_eval_unquoted_result " $_G_unquoted_arg" + else + func_append func_quote_for_eval_unquoted_result "$_G_unquoted_arg" + fi + + case $_G_unquoted_arg in + # Double-quote args containing shell metacharacters to delay + # word splitting, command substitution and variable expansion + # for a subsequent eval. + # Many Bourne shells cannot handle close brackets correctly + # in scan sets, so we specify it separately. + *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"") + _G_quoted_arg=\"$_G_unquoted_arg\" + ;; + *) + _G_quoted_arg=$_G_unquoted_arg + ;; + esac + + if test -n "$func_quote_for_eval_result"; then + func_append func_quote_for_eval_result " $_G_quoted_arg" + else + func_append func_quote_for_eval_result "$_G_quoted_arg" + fi + shift + done +} + + +# func_quote_for_expand ARG +# ------------------------- +# Aesthetically quote ARG to be evaled later; same as above, +# but do not quote variable references. +func_quote_for_expand () +{ + $debug_cmd + + case $1 in + *[\\\`\"]*) + _G_arg=`$ECHO "$1" | $SED \ + -e "$sed_double_quote_subst" -e "$sed_double_backslash"` ;; + *) + _G_arg=$1 ;; + esac + + case $_G_arg in + # Double-quote args containing shell metacharacters to delay + # word splitting and command substitution for a subsequent eval. + # Many Bourne shells cannot handle close brackets correctly + # in scan sets, so we specify it separately. + *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"") + _G_arg=\"$_G_arg\" + ;; + esac + + func_quote_for_expand_result=$_G_arg +} + + +# func_stripname PREFIX SUFFIX NAME +# --------------------------------- +# strip PREFIX and SUFFIX from NAME, and store in func_stripname_result. +# PREFIX and SUFFIX must not contain globbing or regex special +# characters, hashes, percent signs, but SUFFIX may contain a leading +# dot (in which case that matches only a dot). +if test yes = "$_G_HAVE_XSI_OPS"; then + eval 'func_stripname () + { + $debug_cmd + + # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are + # positional parameters, so assign one to ordinary variable first. + func_stripname_result=$3 + func_stripname_result=${func_stripname_result#"$1"} + func_stripname_result=${func_stripname_result%"$2"} + }' +else + func_stripname () + { + $debug_cmd + + case $2 in + .*) func_stripname_result=`$ECHO "$3" | $SED -e "s%^$1%%" -e "s%\\\\$2\$%%"`;; + *) func_stripname_result=`$ECHO "$3" | $SED -e "s%^$1%%" -e "s%$2\$%%"`;; + esac + } +fi + + +# func_show_eval CMD [FAIL_EXP] +# ----------------------------- +# Unless opt_quiet is true, then output CMD. Then, if opt_dryrun is +# not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP +# is given, then evaluate it. +func_show_eval () +{ + $debug_cmd + + _G_cmd=$1 + _G_fail_exp=${2-':'} + + func_quote_for_expand "$_G_cmd" + eval "func_notquiet $func_quote_for_expand_result" + + $opt_dry_run || { + eval "$_G_cmd" + _G_status=$? + if test 0 -ne "$_G_status"; then + eval "(exit $_G_status); $_G_fail_exp" + fi + } +} + + +# func_show_eval_locale CMD [FAIL_EXP] +# ------------------------------------ +# Unless opt_quiet is true, then output CMD. Then, if opt_dryrun is +# not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP +# is given, then evaluate it. Use the saved locale for evaluation. +func_show_eval_locale () +{ + $debug_cmd + + _G_cmd=$1 + _G_fail_exp=${2-':'} + + $opt_quiet || { + func_quote_for_expand "$_G_cmd" + eval "func_echo $func_quote_for_expand_result" + } + + $opt_dry_run || { + eval "$_G_user_locale + $_G_cmd" + _G_status=$? + eval "$_G_safe_locale" + if test 0 -ne "$_G_status"; then + eval "(exit $_G_status); $_G_fail_exp" + fi + } +} + + +# func_tr_sh +# ---------- +# Turn $1 into a string suitable for a shell variable name. +# Result is stored in $func_tr_sh_result. All characters +# not in the set a-zA-Z0-9_ are replaced with '_'. Further, +# if $1 begins with a digit, a '_' is prepended as well. +func_tr_sh () +{ + $debug_cmd + + case $1 in + [0-9]* | *[!a-zA-Z0-9_]*) + func_tr_sh_result=`$ECHO "$1" | $SED -e 's/^\([0-9]\)/_\1/' -e 's/[^a-zA-Z0-9_]/_/g'` + ;; + * ) + func_tr_sh_result=$1 + ;; + esac +} + + +# func_verbose ARG... +# ------------------- +# Echo program name prefixed message in verbose mode only. +func_verbose () +{ + $debug_cmd + + $opt_verbose && func_echo "$*" + + : +} + + +# func_warn_and_continue ARG... +# ----------------------------- +# Echo program name prefixed warning message to standard error. +func_warn_and_continue () +{ + $debug_cmd + + $require_term_colors + + func_echo_infix_1 "${tc_red}warning$tc_reset" "$*" >&2 +} + + +# func_warning CATEGORY ARG... +# ---------------------------- +# Echo program name prefixed warning message to standard error. Warning +# messages can be filtered according to CATEGORY, where this function +# elides messages where CATEGORY is not listed in the global variable +# 'opt_warning_types'. +func_warning () +{ + $debug_cmd + + # CATEGORY must be in the warning_categories list! + case " $warning_categories " in + *" $1 "*) ;; + *) func_internal_error "invalid warning category '$1'" ;; + esac + + _G_category=$1 + shift + + case " $opt_warning_types " in + *" $_G_category "*) $warning_func ${1+"$@"} ;; + esac +} + + +# func_sort_ver VER1 VER2 +# ----------------------- +# 'sort -V' is not generally available. +# Note this deviates from the version comparison in automake +# in that it treats 1.5 < 1.5.0, and treats 1.4.4a < 1.4-p3a +# but this should suffice as we won't be specifying old +# version formats or redundant trailing .0 in bootstrap.conf. +# If we did want full compatibility then we should probably +# use m4_version_compare from autoconf. +func_sort_ver () +{ + $debug_cmd + + printf '%s\n%s\n' "$1" "$2" \ + | sort -t. -k 1,1n -k 2,2n -k 3,3n -k 4,4n -k 5,5n -k 6,6n -k 7,7n -k 8,8n -k 9,9n +} + +# func_lt_ver PREV CURR +# --------------------- +# Return true if PREV and CURR are in the correct order according to +# func_sort_ver, otherwise false. Use it like this: +# +# func_lt_ver "$prev_ver" "$proposed_ver" || func_fatal_error "..." +func_lt_ver () +{ + $debug_cmd + + test "x$1" = x`func_sort_ver "$1" "$2" | $SED 1q` +} + + +# Local variables: +# mode: shell-script +# sh-indentation: 2 +# eval: (add-hook 'before-save-hook 'time-stamp) +# time-stamp-pattern: "10/scriptversion=%:y-%02m-%02d.%02H; # UTC" +# time-stamp-time-zone: "UTC" +# End: +#! /bin/sh + +# Set a version string for this script. +scriptversion=2014-01-07.03; # UTC + +# A portable, pluggable option parser for Bourne shell. +# Written by Gary V. Vaughan, 2010 + +# Copyright (C) 2010-2015 Free Software Foundation, Inc. +# This is free software; see the source for copying conditions. There is NO +# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# Please report bugs or propose patches to gary@gnu.org. + + +## ------ ## +## Usage. ## +## ------ ## + +# This file is a library for parsing options in your shell scripts along +# with assorted other useful supporting features that you can make use +# of too. +# +# For the simplest scripts you might need only: +# +# #!/bin/sh +# . relative/path/to/funclib.sh +# . relative/path/to/options-parser +# scriptversion=1.0 +# func_options ${1+"$@"} +# eval set dummy "$func_options_result"; shift +# ...rest of your script... +# +# In order for the '--version' option to work, you will need to have a +# suitably formatted comment like the one at the top of this file +# starting with '# Written by ' and ending with '# warranty; '. +# +# For '-h' and '--help' to work, you will also need a one line +# description of your script's purpose in a comment directly above the +# '# Written by ' line, like the one at the top of this file. +# +# The default options also support '--debug', which will turn on shell +# execution tracing (see the comment above debug_cmd below for another +# use), and '--verbose' and the func_verbose function to allow your script +# to display verbose messages only when your user has specified +# '--verbose'. +# +# After sourcing this file, you can plug processing for additional +# options by amending the variables from the 'Configuration' section +# below, and following the instructions in the 'Option parsing' +# section further down. + +## -------------- ## +## Configuration. ## +## -------------- ## + +# You should override these variables in your script after sourcing this +# file so that they reflect the customisations you have added to the +# option parser. + +# The usage line for option parsing errors and the start of '-h' and +# '--help' output messages. You can embed shell variables for delayed +# expansion at the time the message is displayed, but you will need to +# quote other shell meta-characters carefully to prevent them being +# expanded when the contents are evaled. +usage='$progpath [OPTION]...' + +# Short help message in response to '-h' and '--help'. Add to this or +# override it after sourcing this library to reflect the full set of +# options your script accepts. +usage_message="\ + --debug enable verbose shell tracing + -W, --warnings=CATEGORY + report the warnings falling in CATEGORY [all] + -v, --verbose verbosely report processing + --version print version information and exit + -h, --help print short or long help message and exit +" + +# Additional text appended to 'usage_message' in response to '--help'. +long_help_message=" +Warning categories include: + 'all' show all warnings + 'none' turn off all the warnings + 'error' warnings are treated as fatal errors" + +# Help message printed before fatal option parsing errors. +fatal_help="Try '\$progname --help' for more information." + + + +## ------------------------- ## +## Hook function management. ## +## ------------------------- ## + +# This section contains functions for adding, removing, and running hooks +# to the main code. A hook is just a named list of of function, that can +# be run in order later on. + +# func_hookable FUNC_NAME +# ----------------------- +# Declare that FUNC_NAME will run hooks added with +# 'func_add_hook FUNC_NAME ...'. +func_hookable () +{ + $debug_cmd + + func_append hookable_fns " $1" +} + + +# func_add_hook FUNC_NAME HOOK_FUNC +# --------------------------------- +# Request that FUNC_NAME call HOOK_FUNC before it returns. FUNC_NAME must +# first have been declared "hookable" by a call to 'func_hookable'. +func_add_hook () +{ + $debug_cmd + + case " $hookable_fns " in + *" $1 "*) ;; + *) func_fatal_error "'$1' does not accept hook functions." ;; + esac + + eval func_append ${1}_hooks '" $2"' +} + + +# func_remove_hook FUNC_NAME HOOK_FUNC +# ------------------------------------ +# Remove HOOK_FUNC from the list of functions called by FUNC_NAME. +func_remove_hook () +{ + $debug_cmd + + eval ${1}_hooks='`$ECHO "\$'$1'_hooks" |$SED "s| '$2'||"`' +} + + +# func_run_hooks FUNC_NAME [ARG]... +# --------------------------------- +# Run all hook functions registered to FUNC_NAME. +# It is assumed that the list of hook functions contains nothing more +# than a whitespace-delimited list of legal shell function names, and +# no effort is wasted trying to catch shell meta-characters or preserve +# whitespace. +func_run_hooks () +{ + $debug_cmd + + case " $hookable_fns " in + *" $1 "*) ;; + *) func_fatal_error "'$1' does not support hook funcions.n" ;; + esac + + eval _G_hook_fns=\$$1_hooks; shift + + for _G_hook in $_G_hook_fns; do + eval $_G_hook '"$@"' + + # store returned options list back into positional + # parameters for next 'cmd' execution. + eval _G_hook_result=\$${_G_hook}_result + eval set dummy "$_G_hook_result"; shift + done + + func_quote_for_eval ${1+"$@"} + func_run_hooks_result=$func_quote_for_eval_result +} + + + +## --------------- ## +## Option parsing. ## +## --------------- ## + +# In order to add your own option parsing hooks, you must accept the +# full positional parameter list in your hook function, remove any +# options that you action, and then pass back the remaining unprocessed +# options in '_result', escaped suitably for +# 'eval'. Like this: +# +# my_options_prep () +# { +# $debug_cmd +# +# # Extend the existing usage message. +# usage_message=$usage_message' +# -s, --silent don'\''t print informational messages +# ' +# +# func_quote_for_eval ${1+"$@"} +# my_options_prep_result=$func_quote_for_eval_result +# } +# func_add_hook func_options_prep my_options_prep +# +# +# my_silent_option () +# { +# $debug_cmd +# +# # Note that for efficiency, we parse as many options as we can +# # recognise in a loop before passing the remainder back to the +# # caller on the first unrecognised argument we encounter. +# while test $# -gt 0; do +# opt=$1; shift +# case $opt in +# --silent|-s) opt_silent=: ;; +# # Separate non-argument short options: +# -s*) func_split_short_opt "$_G_opt" +# set dummy "$func_split_short_opt_name" \ +# "-$func_split_short_opt_arg" ${1+"$@"} +# shift +# ;; +# *) set dummy "$_G_opt" "$*"; shift; break ;; +# esac +# done +# +# func_quote_for_eval ${1+"$@"} +# my_silent_option_result=$func_quote_for_eval_result +# } +# func_add_hook func_parse_options my_silent_option +# +# +# my_option_validation () +# { +# $debug_cmd +# +# $opt_silent && $opt_verbose && func_fatal_help "\ +# '--silent' and '--verbose' options are mutually exclusive." +# +# func_quote_for_eval ${1+"$@"} +# my_option_validation_result=$func_quote_for_eval_result +# } +# func_add_hook func_validate_options my_option_validation +# +# You'll alse need to manually amend $usage_message to reflect the extra +# options you parse. It's preferable to append if you can, so that +# multiple option parsing hooks can be added safely. + + +# func_options [ARG]... +# --------------------- +# All the functions called inside func_options are hookable. See the +# individual implementations for details. +func_hookable func_options +func_options () +{ + $debug_cmd + + func_options_prep ${1+"$@"} + eval func_parse_options \ + ${func_options_prep_result+"$func_options_prep_result"} + eval func_validate_options \ + ${func_parse_options_result+"$func_parse_options_result"} + + eval func_run_hooks func_options \ + ${func_validate_options_result+"$func_validate_options_result"} + + # save modified positional parameters for caller + func_options_result=$func_run_hooks_result +} + + +# func_options_prep [ARG]... +# -------------------------- +# All initialisations required before starting the option parse loop. +# Note that when calling hook functions, we pass through the list of +# positional parameters. If a hook function modifies that list, and +# needs to propogate that back to rest of this script, then the complete +# modified list must be put in 'func_run_hooks_result' before +# returning. +func_hookable func_options_prep +func_options_prep () +{ + $debug_cmd + + # Option defaults: + opt_verbose=false + opt_warning_types= + + func_run_hooks func_options_prep ${1+"$@"} + + # save modified positional parameters for caller + func_options_prep_result=$func_run_hooks_result +} + + +# func_parse_options [ARG]... +# --------------------------- +# The main option parsing loop. +func_hookable func_parse_options +func_parse_options () +{ + $debug_cmd + + func_parse_options_result= + + # this just eases exit handling + while test $# -gt 0; do + # Defer to hook functions for initial option parsing, so they + # get priority in the event of reusing an option name. + func_run_hooks func_parse_options ${1+"$@"} + + # Adjust func_parse_options positional parameters to match + eval set dummy "$func_run_hooks_result"; shift + + # Break out of the loop if we already parsed every option. + test $# -gt 0 || break + + _G_opt=$1 + shift + case $_G_opt in + --debug|-x) debug_cmd='set -x' + func_echo "enabling shell trace mode" + $debug_cmd + ;; + + --no-warnings|--no-warning|--no-warn) + set dummy --warnings none ${1+"$@"} + shift + ;; + + --warnings|--warning|-W) + test $# = 0 && func_missing_arg $_G_opt && break + case " $warning_categories $1" in + *" $1 "*) + # trailing space prevents matching last $1 above + func_append_uniq opt_warning_types " $1" + ;; + *all) + opt_warning_types=$warning_categories + ;; + *none) + opt_warning_types=none + warning_func=: + ;; + *error) + opt_warning_types=$warning_categories + warning_func=func_fatal_error + ;; + *) + func_fatal_error \ + "unsupported warning category: '$1'" + ;; + esac + shift + ;; + + --verbose|-v) opt_verbose=: ;; + --version) func_version ;; + -\?|-h) func_usage ;; + --help) func_help ;; + + # Separate optargs to long options (plugins may need this): + --*=*) func_split_equals "$_G_opt" + set dummy "$func_split_equals_lhs" \ + "$func_split_equals_rhs" ${1+"$@"} + shift + ;; + + # Separate optargs to short options: + -W*) + func_split_short_opt "$_G_opt" + set dummy "$func_split_short_opt_name" \ + "$func_split_short_opt_arg" ${1+"$@"} + shift + ;; + + # Separate non-argument short options: + -\?*|-h*|-v*|-x*) + func_split_short_opt "$_G_opt" + set dummy "$func_split_short_opt_name" \ + "-$func_split_short_opt_arg" ${1+"$@"} + shift + ;; + + --) break ;; + -*) func_fatal_help "unrecognised option: '$_G_opt'" ;; + *) set dummy "$_G_opt" ${1+"$@"}; shift; break ;; + esac + done + + # save modified positional parameters for caller + func_quote_for_eval ${1+"$@"} + func_parse_options_result=$func_quote_for_eval_result +} + + +# func_validate_options [ARG]... +# ------------------------------ +# Perform any sanity checks on option settings and/or unconsumed +# arguments. +func_hookable func_validate_options +func_validate_options () +{ + $debug_cmd + + # Display all warnings if -W was not given. + test -n "$opt_warning_types" || opt_warning_types=" $warning_categories" + + func_run_hooks func_validate_options ${1+"$@"} + + # Bail if the options were screwed! + $exit_cmd $EXIT_FAILURE + + # save modified positional parameters for caller + func_validate_options_result=$func_run_hooks_result +} + + + +## ----------------- ## +## Helper functions. ## +## ----------------- ## + +# This section contains the helper functions used by the rest of the +# hookable option parser framework in ascii-betical order. + + +# func_fatal_help ARG... +# ---------------------- +# Echo program name prefixed message to standard error, followed by +# a help hint, and exit. +func_fatal_help () +{ + $debug_cmd + + eval \$ECHO \""Usage: $usage"\" + eval \$ECHO \""$fatal_help"\" + func_error ${1+"$@"} + exit $EXIT_FAILURE +} + + +# func_help +# --------- +# Echo long help message to standard output and exit. +func_help () +{ + $debug_cmd + + func_usage_message + $ECHO "$long_help_message" + exit 0 +} + + +# func_missing_arg ARGNAME +# ------------------------ +# Echo program name prefixed message to standard error and set global +# exit_cmd. +func_missing_arg () +{ + $debug_cmd + + func_error "Missing argument for '$1'." + exit_cmd=exit +} + + +# func_split_equals STRING +# ------------------------ +# Set func_split_equals_lhs and func_split_equals_rhs shell variables after +# splitting STRING at the '=' sign. +test -z "$_G_HAVE_XSI_OPS" \ + && (eval 'x=a/b/c; + test 5aa/bb/cc = "${#x}${x%%/*}${x%/*}${x#*/}${x##*/}"') 2>/dev/null \ + && _G_HAVE_XSI_OPS=yes + +if test yes = "$_G_HAVE_XSI_OPS" +then + # This is an XSI compatible shell, allowing a faster implementation... + eval 'func_split_equals () + { + $debug_cmd + + func_split_equals_lhs=${1%%=*} + func_split_equals_rhs=${1#*=} + test "x$func_split_equals_lhs" = "x$1" \ + && func_split_equals_rhs= + }' +else + # ...otherwise fall back to using expr, which is often a shell builtin. + func_split_equals () + { + $debug_cmd + + func_split_equals_lhs=`expr "x$1" : 'x\([^=]*\)'` + func_split_equals_rhs= + test "x$func_split_equals_lhs" = "x$1" \ + || func_split_equals_rhs=`expr "x$1" : 'x[^=]*=\(.*\)$'` + } +fi #func_split_equals + + +# func_split_short_opt SHORTOPT +# ----------------------------- +# Set func_split_short_opt_name and func_split_short_opt_arg shell +# variables after splitting SHORTOPT after the 2nd character. +if test yes = "$_G_HAVE_XSI_OPS" +then + # This is an XSI compatible shell, allowing a faster implementation... + eval 'func_split_short_opt () + { + $debug_cmd + + func_split_short_opt_arg=${1#??} + func_split_short_opt_name=${1%"$func_split_short_opt_arg"} + }' +else + # ...otherwise fall back to using expr, which is often a shell builtin. + func_split_short_opt () + { + $debug_cmd + + func_split_short_opt_name=`expr "x$1" : 'x-\(.\)'` + func_split_short_opt_arg=`expr "x$1" : 'x-.\(.*\)$'` + } +fi #func_split_short_opt + + +# func_usage +# ---------- +# Echo short help message to standard output and exit. +func_usage () +{ + $debug_cmd + + func_usage_message + $ECHO "Run '$progname --help |${PAGER-more}' for full usage" + exit 0 +} + + +# func_usage_message +# ------------------ +# Echo short help message to standard output. +func_usage_message () +{ + $debug_cmd + + eval \$ECHO \""Usage: $usage"\" + echo + $SED -n 's|^# || + /^Written by/{ + x;p;x + } + h + /^Written by/q' < "$progpath" + echo + eval \$ECHO \""$usage_message"\" +} + + +# func_version +# ------------ +# Echo version message to standard output and exit. +func_version () +{ + $debug_cmd + + printf '%s\n' "$progname $scriptversion" + $SED -n ' + /(C)/!b go + :more + /\./!{ + N + s|\n# | | + b more + } + :go + /^# Written by /,/# warranty; / { + s|^# || + s|^# *$|| + s|\((C)\)[ 0-9,-]*[ ,-]\([1-9][0-9]* \)|\1 \2| + p + } + /^# Written by / { + s|^# || + p + } + /^warranty; /q' < "$progpath" + + exit $? +} + + +# Local variables: +# mode: shell-script +# sh-indentation: 2 +# eval: (add-hook 'before-save-hook 'time-stamp) +# time-stamp-pattern: "10/scriptversion=%:y-%02m-%02d.%02H; # UTC" +# time-stamp-time-zone: "UTC" +# End: + +# Set a version string. +scriptversion='(GNU libtool) 2.4.6' + + +# func_echo ARG... +# ---------------- +# Libtool also displays the current mode in messages, so override +# funclib.sh func_echo with this custom definition. +func_echo () +{ + $debug_cmd + + _G_message=$* + + func_echo_IFS=$IFS + IFS=$nl + for _G_line in $_G_message; do + IFS=$func_echo_IFS + $ECHO "$progname${opt_mode+: $opt_mode}: $_G_line" + done + IFS=$func_echo_IFS +} + + +# func_warning ARG... +# ------------------- +# Libtool warnings are not categorized, so override funclib.sh +# func_warning with this simpler definition. +func_warning () +{ + $debug_cmd + + $warning_func ${1+"$@"} +} + + +## ---------------- ## +## Options parsing. ## +## ---------------- ## + +# Hook in the functions to make sure our own options are parsed during +# the option parsing loop. + +usage='$progpath [OPTION]... [MODE-ARG]...' + +# Short help message in response to '-h'. +usage_message="Options: + --config show all configuration variables + --debug enable verbose shell tracing + -n, --dry-run display commands without modifying any files + --features display basic configuration information and exit + --mode=MODE use operation mode MODE + --no-warnings equivalent to '-Wnone' + --preserve-dup-deps don't remove duplicate dependency libraries + --quiet, --silent don't print informational messages + --tag=TAG use configuration variables from tag TAG + -v, --verbose print more informational messages than default + --version print version information + -W, --warnings=CATEGORY report the warnings falling in CATEGORY [all] + -h, --help, --help-all print short, long, or detailed help message +" + +# Additional text appended to 'usage_message' in response to '--help'. +func_help () +{ + $debug_cmd + + func_usage_message + $ECHO "$long_help_message + +MODE must be one of the following: + + clean remove files from the build directory + compile compile a source file into a libtool object + execute automatically set library path, then run a program + finish complete the installation of libtool libraries + install install libraries or executables + link create a library or an executable + uninstall remove libraries from an installed directory + +MODE-ARGS vary depending on the MODE. When passed as first option, +'--mode=MODE' may be abbreviated as 'MODE' or a unique abbreviation of that. +Try '$progname --help --mode=MODE' for a more detailed description of MODE. + +When reporting a bug, please describe a test case to reproduce it and +include the following information: + + host-triplet: $host + shell: $SHELL + compiler: $LTCC + compiler flags: $LTCFLAGS + linker: $LD (gnu? $with_gnu_ld) + version: $progname (GNU libtool) 2.4.6 + automake: `($AUTOMAKE --version) 2>/dev/null |$SED 1q` + autoconf: `($AUTOCONF --version) 2>/dev/null |$SED 1q` + +Report bugs to . +GNU libtool home page: . +General help using GNU software: ." + exit 0 +} + + +# func_lo2o OBJECT-NAME +# --------------------- +# Transform OBJECT-NAME from a '.lo' suffix to the platform specific +# object suffix. + +lo2o=s/\\.lo\$/.$objext/ +o2lo=s/\\.$objext\$/.lo/ + +if test yes = "$_G_HAVE_XSI_OPS"; then + eval 'func_lo2o () + { + case $1 in + *.lo) func_lo2o_result=${1%.lo}.$objext ;; + * ) func_lo2o_result=$1 ;; + esac + }' + + # func_xform LIBOBJ-OR-SOURCE + # --------------------------- + # Transform LIBOBJ-OR-SOURCE from a '.o' or '.c' (or otherwise) + # suffix to a '.lo' libtool-object suffix. + eval 'func_xform () + { + func_xform_result=${1%.*}.lo + }' +else + # ...otherwise fall back to using sed. + func_lo2o () + { + func_lo2o_result=`$ECHO "$1" | $SED "$lo2o"` + } + + func_xform () + { + func_xform_result=`$ECHO "$1" | $SED 's|\.[^.]*$|.lo|'` + } +fi + + +# func_fatal_configuration ARG... +# ------------------------------- +# Echo program name prefixed message to standard error, followed by +# a configuration failure hint, and exit. +func_fatal_configuration () +{ + func__fatal_error ${1+"$@"} \ + "See the $PACKAGE documentation for more information." \ + "Fatal configuration error." +} + + +# func_config +# ----------- +# Display the configuration for all the tags in this script. +func_config () +{ + re_begincf='^# ### BEGIN LIBTOOL' + re_endcf='^# ### END LIBTOOL' + + # Default configuration. + $SED "1,/$re_begincf CONFIG/d;/$re_endcf CONFIG/,\$d" < "$progpath" + + # Now print the configurations for the tags. + for tagname in $taglist; do + $SED -n "/$re_begincf TAG CONFIG: $tagname\$/,/$re_endcf TAG CONFIG: $tagname\$/p" < "$progpath" + done + + exit $? +} + + +# func_features +# ------------- +# Display the features supported by this script. +func_features () +{ + echo "host: $host" + if test yes = "$build_libtool_libs"; then + echo "enable shared libraries" + else + echo "disable shared libraries" + fi + if test yes = "$build_old_libs"; then + echo "enable static libraries" + else + echo "disable static libraries" + fi + + exit $? +} + + +# func_enable_tag TAGNAME +# ----------------------- +# Verify that TAGNAME is valid, and either flag an error and exit, or +# enable the TAGNAME tag. We also add TAGNAME to the global $taglist +# variable here. +func_enable_tag () +{ + # Global variable: + tagname=$1 + + re_begincf="^# ### BEGIN LIBTOOL TAG CONFIG: $tagname\$" + re_endcf="^# ### END LIBTOOL TAG CONFIG: $tagname\$" + sed_extractcf=/$re_begincf/,/$re_endcf/p + + # Validate tagname. + case $tagname in + *[!-_A-Za-z0-9,/]*) + func_fatal_error "invalid tag name: $tagname" + ;; + esac + + # Don't test for the "default" C tag, as we know it's + # there but not specially marked. + case $tagname in + CC) ;; + *) + if $GREP "$re_begincf" "$progpath" >/dev/null 2>&1; then + taglist="$taglist $tagname" + + # Evaluate the configuration. Be careful to quote the path + # and the sed script, to avoid splitting on whitespace, but + # also don't use non-portable quotes within backquotes within + # quotes we have to do it in 2 steps: + extractedcf=`$SED -n -e "$sed_extractcf" < "$progpath"` + eval "$extractedcf" + else + func_error "ignoring unknown tag $tagname" + fi + ;; + esac +} + + +# func_check_version_match +# ------------------------ +# Ensure that we are using m4 macros, and libtool script from the same +# release of libtool. +func_check_version_match () +{ + if test "$package_revision" != "$macro_revision"; then + if test "$VERSION" != "$macro_version"; then + if test -z "$macro_version"; then + cat >&2 <<_LT_EOF +$progname: Version mismatch error. This is $PACKAGE $VERSION, but the +$progname: definition of this LT_INIT comes from an older release. +$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION +$progname: and run autoconf again. +_LT_EOF + else + cat >&2 <<_LT_EOF +$progname: Version mismatch error. This is $PACKAGE $VERSION, but the +$progname: definition of this LT_INIT comes from $PACKAGE $macro_version. +$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION +$progname: and run autoconf again. +_LT_EOF + fi + else + cat >&2 <<_LT_EOF +$progname: Version mismatch error. This is $PACKAGE $VERSION, revision $package_revision, +$progname: but the definition of this LT_INIT comes from revision $macro_revision. +$progname: You should recreate aclocal.m4 with macros from revision $package_revision +$progname: of $PACKAGE $VERSION and run autoconf again. +_LT_EOF + fi + + exit $EXIT_MISMATCH + fi +} + + +# libtool_options_prep [ARG]... +# ----------------------------- +# Preparation for options parsed by libtool. +libtool_options_prep () +{ + $debug_mode + + # Option defaults: + opt_config=false + opt_dlopen= + opt_dry_run=false + opt_help=false + opt_mode= + opt_preserve_dup_deps=false + opt_quiet=false + + nonopt= + preserve_args= + + # Shorthand for --mode=foo, only valid as the first argument + case $1 in + clean|clea|cle|cl) + shift; set dummy --mode clean ${1+"$@"}; shift + ;; + compile|compil|compi|comp|com|co|c) + shift; set dummy --mode compile ${1+"$@"}; shift + ;; + execute|execut|execu|exec|exe|ex|e) + shift; set dummy --mode execute ${1+"$@"}; shift + ;; + finish|finis|fini|fin|fi|f) + shift; set dummy --mode finish ${1+"$@"}; shift + ;; + install|instal|insta|inst|ins|in|i) + shift; set dummy --mode install ${1+"$@"}; shift + ;; + link|lin|li|l) + shift; set dummy --mode link ${1+"$@"}; shift + ;; + uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u) + shift; set dummy --mode uninstall ${1+"$@"}; shift + ;; + esac + + # Pass back the list of options. + func_quote_for_eval ${1+"$@"} + libtool_options_prep_result=$func_quote_for_eval_result +} +func_add_hook func_options_prep libtool_options_prep + + +# libtool_parse_options [ARG]... +# --------------------------------- +# Provide handling for libtool specific options. +libtool_parse_options () +{ + $debug_cmd + + # Perform our own loop to consume as many options as possible in + # each iteration. + while test $# -gt 0; do + _G_opt=$1 + shift + case $_G_opt in + --dry-run|--dryrun|-n) + opt_dry_run=: + ;; + + --config) func_config ;; + + --dlopen|-dlopen) + opt_dlopen="${opt_dlopen+$opt_dlopen +}$1" + shift + ;; + + --preserve-dup-deps) + opt_preserve_dup_deps=: ;; + + --features) func_features ;; + + --finish) set dummy --mode finish ${1+"$@"}; shift ;; + + --help) opt_help=: ;; + + --help-all) opt_help=': help-all' ;; + + --mode) test $# = 0 && func_missing_arg $_G_opt && break + opt_mode=$1 + case $1 in + # Valid mode arguments: + clean|compile|execute|finish|install|link|relink|uninstall) ;; + + # Catch anything else as an error + *) func_error "invalid argument for $_G_opt" + exit_cmd=exit + break + ;; + esac + shift + ;; + + --no-silent|--no-quiet) + opt_quiet=false + func_append preserve_args " $_G_opt" + ;; + + --no-warnings|--no-warning|--no-warn) + opt_warning=false + func_append preserve_args " $_G_opt" + ;; + + --no-verbose) + opt_verbose=false + func_append preserve_args " $_G_opt" + ;; + + --silent|--quiet) + opt_quiet=: + opt_verbose=false + func_append preserve_args " $_G_opt" + ;; + + --tag) test $# = 0 && func_missing_arg $_G_opt && break + opt_tag=$1 + func_append preserve_args " $_G_opt $1" + func_enable_tag "$1" + shift + ;; + + --verbose|-v) opt_quiet=false + opt_verbose=: + func_append preserve_args " $_G_opt" + ;; + + # An option not handled by this hook function: + *) set dummy "$_G_opt" ${1+"$@"}; shift; break ;; + esac + done + + + # save modified positional parameters for caller + func_quote_for_eval ${1+"$@"} + libtool_parse_options_result=$func_quote_for_eval_result +} +func_add_hook func_parse_options libtool_parse_options + + + +# libtool_validate_options [ARG]... +# --------------------------------- +# Perform any sanity checks on option settings and/or unconsumed +# arguments. +libtool_validate_options () +{ + # save first non-option argument + if test 0 -lt $#; then + nonopt=$1 + shift + fi + + # preserve --debug + test : = "$debug_cmd" || func_append preserve_args " --debug" + + case $host in + # Solaris2 added to fix http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16452 + # see also: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59788 + *cygwin* | *mingw* | *pw32* | *cegcc* | *solaris2* | *os2*) + # don't eliminate duplications in $postdeps and $predeps + opt_duplicate_compiler_generated_deps=: + ;; + *) + opt_duplicate_compiler_generated_deps=$opt_preserve_dup_deps + ;; + esac + + $opt_help || { + # Sanity checks first: + func_check_version_match + + test yes != "$build_libtool_libs" \ + && test yes != "$build_old_libs" \ + && func_fatal_configuration "not configured to build any kind of library" + + # Darwin sucks + eval std_shrext=\"$shrext_cmds\" + + # Only execute mode is allowed to have -dlopen flags. + if test -n "$opt_dlopen" && test execute != "$opt_mode"; then + func_error "unrecognized option '-dlopen'" + $ECHO "$help" 1>&2 + exit $EXIT_FAILURE + fi + + # Change the help message to a mode-specific one. + generic_help=$help + help="Try '$progname --help --mode=$opt_mode' for more information." + } + + # Pass back the unparsed argument list + func_quote_for_eval ${1+"$@"} + libtool_validate_options_result=$func_quote_for_eval_result +} +func_add_hook func_validate_options libtool_validate_options + + +# Process options as early as possible so that --help and --version +# can return quickly. +func_options ${1+"$@"} +eval set dummy "$func_options_result"; shift + + + +## ----------- ## +## Main. ## +## ----------- ## + +magic='%%%MAGIC variable%%%' +magic_exe='%%%MAGIC EXE variable%%%' + +# Global variables. +extracted_archives= +extracted_serial=0 + +# If this variable is set in any of the actions, the command in it +# will be execed at the end. This prevents here-documents from being +# left over by shells. +exec_cmd= + + +# A function that is used when there is no print builtin or printf. +func_fallback_echo () +{ + eval 'cat <<_LTECHO_EOF +$1 +_LTECHO_EOF' +} + +# func_generated_by_libtool +# True iff stdin has been generated by Libtool. This function is only +# a basic sanity check; it will hardly flush out determined imposters. +func_generated_by_libtool_p () +{ + $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1 +} + +# func_lalib_p file +# True iff FILE is a libtool '.la' library or '.lo' object file. +# This function is only a basic sanity check; it will hardly flush out +# determined imposters. +func_lalib_p () +{ + test -f "$1" && + $SED -e 4q "$1" 2>/dev/null | func_generated_by_libtool_p +} + +# func_lalib_unsafe_p file +# True iff FILE is a libtool '.la' library or '.lo' object file. +# This function implements the same check as func_lalib_p without +# resorting to external programs. To this end, it redirects stdin and +# closes it afterwards, without saving the original file descriptor. +# As a safety measure, use it only where a negative result would be +# fatal anyway. Works if 'file' does not exist. +func_lalib_unsafe_p () +{ + lalib_p=no + if test -f "$1" && test -r "$1" && exec 5<&0 <"$1"; then + for lalib_p_l in 1 2 3 4 + do + read lalib_p_line + case $lalib_p_line in + \#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;; + esac + done + exec 0<&5 5<&- + fi + test yes = "$lalib_p" +} + +# func_ltwrapper_script_p file +# True iff FILE is a libtool wrapper script +# This function is only a basic sanity check; it will hardly flush out +# determined imposters. +func_ltwrapper_script_p () +{ + test -f "$1" && + $lt_truncate_bin < "$1" 2>/dev/null | func_generated_by_libtool_p +} + +# func_ltwrapper_executable_p file +# True iff FILE is a libtool wrapper executable +# This function is only a basic sanity check; it will hardly flush out +# determined imposters. +func_ltwrapper_executable_p () +{ + func_ltwrapper_exec_suffix= + case $1 in + *.exe) ;; + *) func_ltwrapper_exec_suffix=.exe ;; + esac + $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1 +} + +# func_ltwrapper_scriptname file +# Assumes file is an ltwrapper_executable +# uses $file to determine the appropriate filename for a +# temporary ltwrapper_script. +func_ltwrapper_scriptname () +{ + func_dirname_and_basename "$1" "" "." + func_stripname '' '.exe' "$func_basename_result" + func_ltwrapper_scriptname_result=$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper +} + +# func_ltwrapper_p file +# True iff FILE is a libtool wrapper script or wrapper executable +# This function is only a basic sanity check; it will hardly flush out +# determined imposters. +func_ltwrapper_p () +{ + func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1" +} + + +# func_execute_cmds commands fail_cmd +# Execute tilde-delimited COMMANDS. +# If FAIL_CMD is given, eval that upon failure. +# FAIL_CMD may read-access the current command in variable CMD! +func_execute_cmds () +{ + $debug_cmd + + save_ifs=$IFS; IFS='~' + for cmd in $1; do + IFS=$sp$nl + eval cmd=\"$cmd\" + IFS=$save_ifs + func_show_eval "$cmd" "${2-:}" + done + IFS=$save_ifs +} + + +# func_source file +# Source FILE, adding directory component if necessary. +# Note that it is not necessary on cygwin/mingw to append a dot to +# FILE even if both FILE and FILE.exe exist: automatic-append-.exe +# behavior happens only for exec(3), not for open(2)! Also, sourcing +# 'FILE.' does not work on cygwin managed mounts. +func_source () +{ + $debug_cmd + + case $1 in + */* | *\\*) . "$1" ;; + *) . "./$1" ;; + esac +} + + +# func_resolve_sysroot PATH +# Replace a leading = in PATH with a sysroot. Store the result into +# func_resolve_sysroot_result +func_resolve_sysroot () +{ + func_resolve_sysroot_result=$1 + case $func_resolve_sysroot_result in + =*) + func_stripname '=' '' "$func_resolve_sysroot_result" + func_resolve_sysroot_result=$lt_sysroot$func_stripname_result + ;; + esac +} + +# func_replace_sysroot PATH +# If PATH begins with the sysroot, replace it with = and +# store the result into func_replace_sysroot_result. +func_replace_sysroot () +{ + case $lt_sysroot:$1 in + ?*:"$lt_sysroot"*) + func_stripname "$lt_sysroot" '' "$1" + func_replace_sysroot_result='='$func_stripname_result + ;; + *) + # Including no sysroot. + func_replace_sysroot_result=$1 + ;; + esac +} + +# func_infer_tag arg +# Infer tagged configuration to use if any are available and +# if one wasn't chosen via the "--tag" command line option. +# Only attempt this if the compiler in the base compile +# command doesn't match the default compiler. +# arg is usually of the form 'gcc ...' +func_infer_tag () +{ + $debug_cmd + + if test -n "$available_tags" && test -z "$tagname"; then + CC_quoted= + for arg in $CC; do + func_append_quoted CC_quoted "$arg" + done + CC_expanded=`func_echo_all $CC` + CC_quoted_expanded=`func_echo_all $CC_quoted` + case $@ in + # Blanks in the command may have been stripped by the calling shell, + # but not from the CC environment variable when configure was run. + " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \ + " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) ;; + # Blanks at the start of $base_compile will cause this to fail + # if we don't check for them as well. + *) + for z in $available_tags; do + if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then + # Evaluate the configuration. + eval "`$SED -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`" + CC_quoted= + for arg in $CC; do + # Double-quote args containing other shell metacharacters. + func_append_quoted CC_quoted "$arg" + done + CC_expanded=`func_echo_all $CC` + CC_quoted_expanded=`func_echo_all $CC_quoted` + case "$@ " in + " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \ + " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) + # The compiler in the base compile command matches + # the one in the tagged configuration. + # Assume this is the tagged configuration we want. + tagname=$z + break + ;; + esac + fi + done + # If $tagname still isn't set, then no tagged configuration + # was found and let the user know that the "--tag" command + # line option must be used. + if test -z "$tagname"; then + func_echo "unable to infer tagged configuration" + func_fatal_error "specify a tag with '--tag'" +# else +# func_verbose "using $tagname tagged configuration" + fi + ;; + esac + fi +} + + + +# func_write_libtool_object output_name pic_name nonpic_name +# Create a libtool object file (analogous to a ".la" file), +# but don't create it if we're doing a dry run. +func_write_libtool_object () +{ + write_libobj=$1 + if test yes = "$build_libtool_libs"; then + write_lobj=\'$2\' + else + write_lobj=none + fi + + if test yes = "$build_old_libs"; then + write_oldobj=\'$3\' + else + write_oldobj=none + fi + + $opt_dry_run || { + cat >${write_libobj}T </dev/null` + if test "$?" -eq 0 && test -n "$func_convert_core_file_wine_to_w32_tmp"; then + func_convert_core_file_wine_to_w32_result=`$ECHO "$func_convert_core_file_wine_to_w32_tmp" | + $SED -e "$sed_naive_backslashify"` + else + func_convert_core_file_wine_to_w32_result= + fi + fi +} +# end: func_convert_core_file_wine_to_w32 + + +# func_convert_core_path_wine_to_w32 ARG +# Helper function used by path conversion functions when $build is *nix, and +# $host is mingw, cygwin, or some other w32 environment. Relies on a correctly +# configured wine environment available, with the winepath program in $build's +# $PATH. Assumes ARG has no leading or trailing path separator characters. +# +# ARG is path to be converted from $build format to win32. +# Result is available in $func_convert_core_path_wine_to_w32_result. +# Unconvertible file (directory) names in ARG are skipped; if no directory names +# are convertible, then the result may be empty. +func_convert_core_path_wine_to_w32 () +{ + $debug_cmd + + # unfortunately, winepath doesn't convert paths, only file names + func_convert_core_path_wine_to_w32_result= + if test -n "$1"; then + oldIFS=$IFS + IFS=: + for func_convert_core_path_wine_to_w32_f in $1; do + IFS=$oldIFS + func_convert_core_file_wine_to_w32 "$func_convert_core_path_wine_to_w32_f" + if test -n "$func_convert_core_file_wine_to_w32_result"; then + if test -z "$func_convert_core_path_wine_to_w32_result"; then + func_convert_core_path_wine_to_w32_result=$func_convert_core_file_wine_to_w32_result + else + func_append func_convert_core_path_wine_to_w32_result ";$func_convert_core_file_wine_to_w32_result" + fi + fi + done + IFS=$oldIFS + fi +} +# end: func_convert_core_path_wine_to_w32 + + +# func_cygpath ARGS... +# Wrapper around calling the cygpath program via LT_CYGPATH. This is used when +# when (1) $build is *nix and Cygwin is hosted via a wine environment; or (2) +# $build is MSYS and $host is Cygwin, or (3) $build is Cygwin. In case (1) or +# (2), returns the Cygwin file name or path in func_cygpath_result (input +# file name or path is assumed to be in w32 format, as previously converted +# from $build's *nix or MSYS format). In case (3), returns the w32 file name +# or path in func_cygpath_result (input file name or path is assumed to be in +# Cygwin format). Returns an empty string on error. +# +# ARGS are passed to cygpath, with the last one being the file name or path to +# be converted. +# +# Specify the absolute *nix (or w32) name to cygpath in the LT_CYGPATH +# environment variable; do not put it in $PATH. +func_cygpath () +{ + $debug_cmd + + if test -n "$LT_CYGPATH" && test -f "$LT_CYGPATH"; then + func_cygpath_result=`$LT_CYGPATH "$@" 2>/dev/null` + if test "$?" -ne 0; then + # on failure, ensure result is empty + func_cygpath_result= + fi + else + func_cygpath_result= + func_error "LT_CYGPATH is empty or specifies non-existent file: '$LT_CYGPATH'" + fi +} +#end: func_cygpath + + +# func_convert_core_msys_to_w32 ARG +# Convert file name or path ARG from MSYS format to w32 format. Return +# result in func_convert_core_msys_to_w32_result. +func_convert_core_msys_to_w32 () +{ + $debug_cmd + + # awkward: cmd appends spaces to result + func_convert_core_msys_to_w32_result=`( cmd //c echo "$1" ) 2>/dev/null | + $SED -e 's/[ ]*$//' -e "$sed_naive_backslashify"` +} +#end: func_convert_core_msys_to_w32 + + +# func_convert_file_check ARG1 ARG2 +# Verify that ARG1 (a file name in $build format) was converted to $host +# format in ARG2. Otherwise, emit an error message, but continue (resetting +# func_to_host_file_result to ARG1). +func_convert_file_check () +{ + $debug_cmd + + if test -z "$2" && test -n "$1"; then + func_error "Could not determine host file name corresponding to" + func_error " '$1'" + func_error "Continuing, but uninstalled executables may not work." + # Fallback: + func_to_host_file_result=$1 + fi +} +# end func_convert_file_check + + +# func_convert_path_check FROM_PATHSEP TO_PATHSEP FROM_PATH TO_PATH +# Verify that FROM_PATH (a path in $build format) was converted to $host +# format in TO_PATH. Otherwise, emit an error message, but continue, resetting +# func_to_host_file_result to a simplistic fallback value (see below). +func_convert_path_check () +{ + $debug_cmd + + if test -z "$4" && test -n "$3"; then + func_error "Could not determine the host path corresponding to" + func_error " '$3'" + func_error "Continuing, but uninstalled executables may not work." + # Fallback. This is a deliberately simplistic "conversion" and + # should not be "improved". See libtool.info. + if test "x$1" != "x$2"; then + lt_replace_pathsep_chars="s|$1|$2|g" + func_to_host_path_result=`echo "$3" | + $SED -e "$lt_replace_pathsep_chars"` + else + func_to_host_path_result=$3 + fi + fi +} +# end func_convert_path_check + + +# func_convert_path_front_back_pathsep FRONTPAT BACKPAT REPL ORIG +# Modifies func_to_host_path_result by prepending REPL if ORIG matches FRONTPAT +# and appending REPL if ORIG matches BACKPAT. +func_convert_path_front_back_pathsep () +{ + $debug_cmd + + case $4 in + $1 ) func_to_host_path_result=$3$func_to_host_path_result + ;; + esac + case $4 in + $2 ) func_append func_to_host_path_result "$3" + ;; + esac +} +# end func_convert_path_front_back_pathsep + + +################################################## +# $build to $host FILE NAME CONVERSION FUNCTIONS # +################################################## +# invoked via '$to_host_file_cmd ARG' +# +# In each case, ARG is the path to be converted from $build to $host format. +# Result will be available in $func_to_host_file_result. + + +# func_to_host_file ARG +# Converts the file name ARG from $build format to $host format. Return result +# in func_to_host_file_result. +func_to_host_file () +{ + $debug_cmd + + $to_host_file_cmd "$1" +} +# end func_to_host_file + + +# func_to_tool_file ARG LAZY +# converts the file name ARG from $build format to toolchain format. Return +# result in func_to_tool_file_result. If the conversion in use is listed +# in (the comma separated) LAZY, no conversion takes place. +func_to_tool_file () +{ + $debug_cmd + + case ,$2, in + *,"$to_tool_file_cmd",*) + func_to_tool_file_result=$1 + ;; + *) + $to_tool_file_cmd "$1" + func_to_tool_file_result=$func_to_host_file_result + ;; + esac +} +# end func_to_tool_file + + +# func_convert_file_noop ARG +# Copy ARG to func_to_host_file_result. +func_convert_file_noop () +{ + func_to_host_file_result=$1 +} +# end func_convert_file_noop + + +# func_convert_file_msys_to_w32 ARG +# Convert file name ARG from (mingw) MSYS to (mingw) w32 format; automatic +# conversion to w32 is not available inside the cwrapper. Returns result in +# func_to_host_file_result. +func_convert_file_msys_to_w32 () +{ + $debug_cmd + + func_to_host_file_result=$1 + if test -n "$1"; then + func_convert_core_msys_to_w32 "$1" + func_to_host_file_result=$func_convert_core_msys_to_w32_result + fi + func_convert_file_check "$1" "$func_to_host_file_result" +} +# end func_convert_file_msys_to_w32 + + +# func_convert_file_cygwin_to_w32 ARG +# Convert file name ARG from Cygwin to w32 format. Returns result in +# func_to_host_file_result. +func_convert_file_cygwin_to_w32 () +{ + $debug_cmd + + func_to_host_file_result=$1 + if test -n "$1"; then + # because $build is cygwin, we call "the" cygpath in $PATH; no need to use + # LT_CYGPATH in this case. + func_to_host_file_result=`cygpath -m "$1"` + fi + func_convert_file_check "$1" "$func_to_host_file_result" +} +# end func_convert_file_cygwin_to_w32 + + +# func_convert_file_nix_to_w32 ARG +# Convert file name ARG from *nix to w32 format. Requires a wine environment +# and a working winepath. Returns result in func_to_host_file_result. +func_convert_file_nix_to_w32 () +{ + $debug_cmd + + func_to_host_file_result=$1 + if test -n "$1"; then + func_convert_core_file_wine_to_w32 "$1" + func_to_host_file_result=$func_convert_core_file_wine_to_w32_result + fi + func_convert_file_check "$1" "$func_to_host_file_result" +} +# end func_convert_file_nix_to_w32 + + +# func_convert_file_msys_to_cygwin ARG +# Convert file name ARG from MSYS to Cygwin format. Requires LT_CYGPATH set. +# Returns result in func_to_host_file_result. +func_convert_file_msys_to_cygwin () +{ + $debug_cmd + + func_to_host_file_result=$1 + if test -n "$1"; then + func_convert_core_msys_to_w32 "$1" + func_cygpath -u "$func_convert_core_msys_to_w32_result" + func_to_host_file_result=$func_cygpath_result + fi + func_convert_file_check "$1" "$func_to_host_file_result" +} +# end func_convert_file_msys_to_cygwin + + +# func_convert_file_nix_to_cygwin ARG +# Convert file name ARG from *nix to Cygwin format. Requires Cygwin installed +# in a wine environment, working winepath, and LT_CYGPATH set. Returns result +# in func_to_host_file_result. +func_convert_file_nix_to_cygwin () +{ + $debug_cmd + + func_to_host_file_result=$1 + if test -n "$1"; then + # convert from *nix to w32, then use cygpath to convert from w32 to cygwin. + func_convert_core_file_wine_to_w32 "$1" + func_cygpath -u "$func_convert_core_file_wine_to_w32_result" + func_to_host_file_result=$func_cygpath_result + fi + func_convert_file_check "$1" "$func_to_host_file_result" +} +# end func_convert_file_nix_to_cygwin + + +############################################# +# $build to $host PATH CONVERSION FUNCTIONS # +############################################# +# invoked via '$to_host_path_cmd ARG' +# +# In each case, ARG is the path to be converted from $build to $host format. +# The result will be available in $func_to_host_path_result. +# +# Path separators are also converted from $build format to $host format. If +# ARG begins or ends with a path separator character, it is preserved (but +# converted to $host format) on output. +# +# All path conversion functions are named using the following convention: +# file name conversion function : func_convert_file_X_to_Y () +# path conversion function : func_convert_path_X_to_Y () +# where, for any given $build/$host combination the 'X_to_Y' value is the +# same. If conversion functions are added for new $build/$host combinations, +# the two new functions must follow this pattern, or func_init_to_host_path_cmd +# will break. + + +# func_init_to_host_path_cmd +# Ensures that function "pointer" variable $to_host_path_cmd is set to the +# appropriate value, based on the value of $to_host_file_cmd. +to_host_path_cmd= +func_init_to_host_path_cmd () +{ + $debug_cmd + + if test -z "$to_host_path_cmd"; then + func_stripname 'func_convert_file_' '' "$to_host_file_cmd" + to_host_path_cmd=func_convert_path_$func_stripname_result + fi +} + + +# func_to_host_path ARG +# Converts the path ARG from $build format to $host format. Return result +# in func_to_host_path_result. +func_to_host_path () +{ + $debug_cmd + + func_init_to_host_path_cmd + $to_host_path_cmd "$1" +} +# end func_to_host_path + + +# func_convert_path_noop ARG +# Copy ARG to func_to_host_path_result. +func_convert_path_noop () +{ + func_to_host_path_result=$1 +} +# end func_convert_path_noop + + +# func_convert_path_msys_to_w32 ARG +# Convert path ARG from (mingw) MSYS to (mingw) w32 format; automatic +# conversion to w32 is not available inside the cwrapper. Returns result in +# func_to_host_path_result. +func_convert_path_msys_to_w32 () +{ + $debug_cmd + + func_to_host_path_result=$1 + if test -n "$1"; then + # Remove leading and trailing path separator characters from ARG. MSYS + # behavior is inconsistent here; cygpath turns them into '.;' and ';.'; + # and winepath ignores them completely. + func_stripname : : "$1" + func_to_host_path_tmp1=$func_stripname_result + func_convert_core_msys_to_w32 "$func_to_host_path_tmp1" + func_to_host_path_result=$func_convert_core_msys_to_w32_result + func_convert_path_check : ";" \ + "$func_to_host_path_tmp1" "$func_to_host_path_result" + func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" + fi +} +# end func_convert_path_msys_to_w32 + + +# func_convert_path_cygwin_to_w32 ARG +# Convert path ARG from Cygwin to w32 format. Returns result in +# func_to_host_file_result. +func_convert_path_cygwin_to_w32 () +{ + $debug_cmd + + func_to_host_path_result=$1 + if test -n "$1"; then + # See func_convert_path_msys_to_w32: + func_stripname : : "$1" + func_to_host_path_tmp1=$func_stripname_result + func_to_host_path_result=`cygpath -m -p "$func_to_host_path_tmp1"` + func_convert_path_check : ";" \ + "$func_to_host_path_tmp1" "$func_to_host_path_result" + func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" + fi +} +# end func_convert_path_cygwin_to_w32 + + +# func_convert_path_nix_to_w32 ARG +# Convert path ARG from *nix to w32 format. Requires a wine environment and +# a working winepath. Returns result in func_to_host_file_result. +func_convert_path_nix_to_w32 () +{ + $debug_cmd + + func_to_host_path_result=$1 + if test -n "$1"; then + # See func_convert_path_msys_to_w32: + func_stripname : : "$1" + func_to_host_path_tmp1=$func_stripname_result + func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1" + func_to_host_path_result=$func_convert_core_path_wine_to_w32_result + func_convert_path_check : ";" \ + "$func_to_host_path_tmp1" "$func_to_host_path_result" + func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" + fi +} +# end func_convert_path_nix_to_w32 + + +# func_convert_path_msys_to_cygwin ARG +# Convert path ARG from MSYS to Cygwin format. Requires LT_CYGPATH set. +# Returns result in func_to_host_file_result. +func_convert_path_msys_to_cygwin () +{ + $debug_cmd + + func_to_host_path_result=$1 + if test -n "$1"; then + # See func_convert_path_msys_to_w32: + func_stripname : : "$1" + func_to_host_path_tmp1=$func_stripname_result + func_convert_core_msys_to_w32 "$func_to_host_path_tmp1" + func_cygpath -u -p "$func_convert_core_msys_to_w32_result" + func_to_host_path_result=$func_cygpath_result + func_convert_path_check : : \ + "$func_to_host_path_tmp1" "$func_to_host_path_result" + func_convert_path_front_back_pathsep ":*" "*:" : "$1" + fi +} +# end func_convert_path_msys_to_cygwin + + +# func_convert_path_nix_to_cygwin ARG +# Convert path ARG from *nix to Cygwin format. Requires Cygwin installed in a +# a wine environment, working winepath, and LT_CYGPATH set. Returns result in +# func_to_host_file_result. +func_convert_path_nix_to_cygwin () +{ + $debug_cmd + + func_to_host_path_result=$1 + if test -n "$1"; then + # Remove leading and trailing path separator characters from + # ARG. msys behavior is inconsistent here, cygpath turns them + # into '.;' and ';.', and winepath ignores them completely. + func_stripname : : "$1" + func_to_host_path_tmp1=$func_stripname_result + func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1" + func_cygpath -u -p "$func_convert_core_path_wine_to_w32_result" + func_to_host_path_result=$func_cygpath_result + func_convert_path_check : : \ + "$func_to_host_path_tmp1" "$func_to_host_path_result" + func_convert_path_front_back_pathsep ":*" "*:" : "$1" + fi +} +# end func_convert_path_nix_to_cygwin + + +# func_dll_def_p FILE +# True iff FILE is a Windows DLL '.def' file. +# Keep in sync with _LT_DLL_DEF_P in libtool.m4 +func_dll_def_p () +{ + $debug_cmd + + func_dll_def_p_tmp=`$SED -n \ + -e 's/^[ ]*//' \ + -e '/^\(;.*\)*$/d' \ + -e 's/^\(EXPORTS\|LIBRARY\)\([ ].*\)*$/DEF/p' \ + -e q \ + "$1"` + test DEF = "$func_dll_def_p_tmp" +} + + +# func_mode_compile arg... +func_mode_compile () +{ + $debug_cmd + + # Get the compilation command and the source file. + base_compile= + srcfile=$nonopt # always keep a non-empty value in "srcfile" + suppress_opt=yes + suppress_output= + arg_mode=normal + libobj= + later= + pie_flag= + + for arg + do + case $arg_mode in + arg ) + # do not "continue". Instead, add this to base_compile + lastarg=$arg + arg_mode=normal + ;; + + target ) + libobj=$arg + arg_mode=normal + continue + ;; + + normal ) + # Accept any command-line options. + case $arg in + -o) + test -n "$libobj" && \ + func_fatal_error "you cannot specify '-o' more than once" + arg_mode=target + continue + ;; + + -pie | -fpie | -fPIE) + func_append pie_flag " $arg" + continue + ;; + + -shared | -static | -prefer-pic | -prefer-non-pic) + func_append later " $arg" + continue + ;; + + -no-suppress) + suppress_opt=no + continue + ;; + + -Xcompiler) + arg_mode=arg # the next one goes into the "base_compile" arg list + continue # The current "srcfile" will either be retained or + ;; # replaced later. I would guess that would be a bug. + + -Wc,*) + func_stripname '-Wc,' '' "$arg" + args=$func_stripname_result + lastarg= + save_ifs=$IFS; IFS=, + for arg in $args; do + IFS=$save_ifs + func_append_quoted lastarg "$arg" + done + IFS=$save_ifs + func_stripname ' ' '' "$lastarg" + lastarg=$func_stripname_result + + # Add the arguments to base_compile. + func_append base_compile " $lastarg" + continue + ;; + + *) + # Accept the current argument as the source file. + # The previous "srcfile" becomes the current argument. + # + lastarg=$srcfile + srcfile=$arg + ;; + esac # case $arg + ;; + esac # case $arg_mode + + # Aesthetically quote the previous argument. + func_append_quoted base_compile "$lastarg" + done # for arg + + case $arg_mode in + arg) + func_fatal_error "you must specify an argument for -Xcompile" + ;; + target) + func_fatal_error "you must specify a target with '-o'" + ;; + *) + # Get the name of the library object. + test -z "$libobj" && { + func_basename "$srcfile" + libobj=$func_basename_result + } + ;; + esac + + # Recognize several different file suffixes. + # If the user specifies -o file.o, it is replaced with file.lo + case $libobj in + *.[cCFSifmso] | \ + *.ada | *.adb | *.ads | *.asm | \ + *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \ + *.[fF][09]? | *.for | *.java | *.go | *.obj | *.sx | *.cu | *.cup) + func_xform "$libobj" + libobj=$func_xform_result + ;; + esac + + case $libobj in + *.lo) func_lo2o "$libobj"; obj=$func_lo2o_result ;; + *) + func_fatal_error "cannot determine name of library object from '$libobj'" + ;; + esac + + func_infer_tag $base_compile + + for arg in $later; do + case $arg in + -shared) + test yes = "$build_libtool_libs" \ + || func_fatal_configuration "cannot build a shared library" + build_old_libs=no + continue + ;; + + -static) + build_libtool_libs=no + build_old_libs=yes + continue + ;; + + -prefer-pic) + pic_mode=yes + continue + ;; + + -prefer-non-pic) + pic_mode=no + continue + ;; + esac + done + + func_quote_for_eval "$libobj" + test "X$libobj" != "X$func_quote_for_eval_result" \ + && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"' &()|`$[]' \ + && func_warning "libobj name '$libobj' may not contain shell special characters." + func_dirname_and_basename "$obj" "/" "" + objname=$func_basename_result + xdir=$func_dirname_result + lobj=$xdir$objdir/$objname + + test -z "$base_compile" && \ + func_fatal_help "you must specify a compilation command" + + # Delete any leftover library objects. + if test yes = "$build_old_libs"; then + removelist="$obj $lobj $libobj ${libobj}T" + else + removelist="$lobj $libobj ${libobj}T" + fi + + # On Cygwin there's no "real" PIC flag so we must build both object types + case $host_os in + cygwin* | mingw* | pw32* | os2* | cegcc*) + pic_mode=default + ;; + esac + if test no = "$pic_mode" && test pass_all != "$deplibs_check_method"; then + # non-PIC code in shared libraries is not supported + pic_mode=default + fi + + # Calculate the filename of the output object if compiler does + # not support -o with -c + if test no = "$compiler_c_o"; then + output_obj=`$ECHO "$srcfile" | $SED 's%^.*/%%; s%\.[^.]*$%%'`.$objext + lockfile=$output_obj.lock + else + output_obj= + need_locks=no + lockfile= + fi + + # Lock this critical section if it is needed + # We use this script file to make the link, it avoids creating a new file + if test yes = "$need_locks"; then + until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do + func_echo "Waiting for $lockfile to be removed" + sleep 2 + done + elif test warn = "$need_locks"; then + if test -f "$lockfile"; then + $ECHO "\ +*** ERROR, $lockfile exists and contains: +`cat $lockfile 2>/dev/null` + +This indicates that another process is trying to use the same +temporary object file, and libtool could not work around it because +your compiler does not support '-c' and '-o' together. If you +repeat this compilation, it may succeed, by chance, but you had better +avoid parallel builds (make -j) in this platform, or get a better +compiler." + + $opt_dry_run || $RM $removelist + exit $EXIT_FAILURE + fi + func_append removelist " $output_obj" + $ECHO "$srcfile" > "$lockfile" + fi + + $opt_dry_run || $RM $removelist + func_append removelist " $lockfile" + trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15 + + func_to_tool_file "$srcfile" func_convert_file_msys_to_w32 + srcfile=$func_to_tool_file_result + func_quote_for_eval "$srcfile" + qsrcfile=$func_quote_for_eval_result + + # Only build a PIC object if we are building libtool libraries. + if test yes = "$build_libtool_libs"; then + # Without this assignment, base_compile gets emptied. + fbsd_hideous_sh_bug=$base_compile + + if test no != "$pic_mode"; then + command="$base_compile $qsrcfile $pic_flag" + else + # Don't build PIC code + command="$base_compile $qsrcfile" + fi + + func_mkdir_p "$xdir$objdir" + + if test -z "$output_obj"; then + # Place PIC objects in $objdir + func_append command " -o $lobj" + fi + + func_show_eval_locale "$command" \ + 'test -n "$output_obj" && $RM $removelist; exit $EXIT_FAILURE' + + if test warn = "$need_locks" && + test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then + $ECHO "\ +*** ERROR, $lockfile contains: +`cat $lockfile 2>/dev/null` + +but it should contain: +$srcfile + +This indicates that another process is trying to use the same +temporary object file, and libtool could not work around it because +your compiler does not support '-c' and '-o' together. If you +repeat this compilation, it may succeed, by chance, but you had better +avoid parallel builds (make -j) in this platform, or get a better +compiler." + + $opt_dry_run || $RM $removelist + exit $EXIT_FAILURE + fi + + # Just move the object if needed, then go on to compile the next one + if test -n "$output_obj" && test "X$output_obj" != "X$lobj"; then + func_show_eval '$MV "$output_obj" "$lobj"' \ + 'error=$?; $opt_dry_run || $RM $removelist; exit $error' + fi + + # Allow error messages only from the first compilation. + if test yes = "$suppress_opt"; then + suppress_output=' >/dev/null 2>&1' + fi + fi + + # Only build a position-dependent object if we build old libraries. + if test yes = "$build_old_libs"; then + if test yes != "$pic_mode"; then + # Don't build PIC code + command="$base_compile $qsrcfile$pie_flag" + else + command="$base_compile $qsrcfile $pic_flag" + fi + if test yes = "$compiler_c_o"; then + func_append command " -o $obj" + fi + + # Suppress compiler output if we already did a PIC compilation. + func_append command "$suppress_output" + func_show_eval_locale "$command" \ + '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' + + if test warn = "$need_locks" && + test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then + $ECHO "\ +*** ERROR, $lockfile contains: +`cat $lockfile 2>/dev/null` + +but it should contain: +$srcfile + +This indicates that another process is trying to use the same +temporary object file, and libtool could not work around it because +your compiler does not support '-c' and '-o' together. If you +repeat this compilation, it may succeed, by chance, but you had better +avoid parallel builds (make -j) in this platform, or get a better +compiler." + + $opt_dry_run || $RM $removelist + exit $EXIT_FAILURE + fi + + # Just move the object if needed + if test -n "$output_obj" && test "X$output_obj" != "X$obj"; then + func_show_eval '$MV "$output_obj" "$obj"' \ + 'error=$?; $opt_dry_run || $RM $removelist; exit $error' + fi + fi + + $opt_dry_run || { + func_write_libtool_object "$libobj" "$objdir/$objname" "$objname" + + # Unlock the critical section if it was locked + if test no != "$need_locks"; then + removelist=$lockfile + $RM "$lockfile" + fi + } + + exit $EXIT_SUCCESS +} + +$opt_help || { + test compile = "$opt_mode" && func_mode_compile ${1+"$@"} +} + +func_mode_help () +{ + # We need to display help for each of the modes. + case $opt_mode in + "") + # Generic help is extracted from the usage comments + # at the start of this file. + func_help + ;; + + clean) + $ECHO \ +"Usage: $progname [OPTION]... --mode=clean RM [RM-OPTION]... FILE... + +Remove files from the build directory. + +RM is the name of the program to use to delete files associated with each FILE +(typically '/bin/rm'). RM-OPTIONS are options (such as '-f') to be passed +to RM. + +If FILE is a libtool library, object or program, all the files associated +with it are deleted. Otherwise, only FILE itself is deleted using RM." + ;; + + compile) + $ECHO \ +"Usage: $progname [OPTION]... --mode=compile COMPILE-COMMAND... SOURCEFILE + +Compile a source file into a libtool library object. + +This mode accepts the following additional options: + + -o OUTPUT-FILE set the output file name to OUTPUT-FILE + -no-suppress do not suppress compiler output for multiple passes + -prefer-pic try to build PIC objects only + -prefer-non-pic try to build non-PIC objects only + -shared do not build a '.o' file suitable for static linking + -static only build a '.o' file suitable for static linking + -Wc,FLAG pass FLAG directly to the compiler + +COMPILE-COMMAND is a command to be used in creating a 'standard' object file +from the given SOURCEFILE. + +The output file name is determined by removing the directory component from +SOURCEFILE, then substituting the C source code suffix '.c' with the +library object suffix, '.lo'." + ;; + + execute) + $ECHO \ +"Usage: $progname [OPTION]... --mode=execute COMMAND [ARGS]... + +Automatically set library path, then run a program. + +This mode accepts the following additional options: + + -dlopen FILE add the directory containing FILE to the library path + +This mode sets the library path environment variable according to '-dlopen' +flags. + +If any of the ARGS are libtool executable wrappers, then they are translated +into their corresponding uninstalled binary, and any of their required library +directories are added to the library path. + +Then, COMMAND is executed, with ARGS as arguments." + ;; + + finish) + $ECHO \ +"Usage: $progname [OPTION]... --mode=finish [LIBDIR]... + +Complete the installation of libtool libraries. + +Each LIBDIR is a directory that contains libtool libraries. + +The commands that this mode executes may require superuser privileges. Use +the '--dry-run' option if you just want to see what would be executed." + ;; + + install) + $ECHO \ +"Usage: $progname [OPTION]... --mode=install INSTALL-COMMAND... + +Install executables or libraries. + +INSTALL-COMMAND is the installation command. The first component should be +either the 'install' or 'cp' program. + +The following components of INSTALL-COMMAND are treated specially: + + -inst-prefix-dir PREFIX-DIR Use PREFIX-DIR as a staging area for installation + +The rest of the components are interpreted as arguments to that command (only +BSD-compatible install options are recognized)." + ;; + + link) + $ECHO \ +"Usage: $progname [OPTION]... --mode=link LINK-COMMAND... + +Link object files or libraries together to form another library, or to +create an executable program. + +LINK-COMMAND is a command using the C compiler that you would use to create +a program from several object files. + +The following components of LINK-COMMAND are treated specially: + + -all-static do not do any dynamic linking at all + -avoid-version do not add a version suffix if possible + -bindir BINDIR specify path to binaries directory (for systems where + libraries must be found in the PATH setting at runtime) + -dlopen FILE '-dlpreopen' FILE if it cannot be dlopened at runtime + -dlpreopen FILE link in FILE and add its symbols to lt_preloaded_symbols + -export-dynamic allow symbols from OUTPUT-FILE to be resolved with dlsym(3) + -export-symbols SYMFILE + try to export only the symbols listed in SYMFILE + -export-symbols-regex REGEX + try to export only the symbols matching REGEX + -LLIBDIR search LIBDIR for required installed libraries + -lNAME OUTPUT-FILE requires the installed library libNAME + -module build a library that can dlopened + -no-fast-install disable the fast-install mode + -no-install link a not-installable executable + -no-undefined declare that a library does not refer to external symbols + -o OUTPUT-FILE create OUTPUT-FILE from the specified objects + -objectlist FILE use a list of object files found in FILE to specify objects + -os2dllname NAME force a short DLL name on OS/2 (no effect on other OSes) + -precious-files-regex REGEX + don't remove output files matching REGEX + -release RELEASE specify package release information + -rpath LIBDIR the created library will eventually be installed in LIBDIR + -R[ ]LIBDIR add LIBDIR to the runtime path of programs and libraries + -shared only do dynamic linking of libtool libraries + -shrext SUFFIX override the standard shared library file extension + -static do not do any dynamic linking of uninstalled libtool libraries + -static-libtool-libs + do not do any dynamic linking of libtool libraries + -version-info CURRENT[:REVISION[:AGE]] + specify library version info [each variable defaults to 0] + -weak LIBNAME declare that the target provides the LIBNAME interface + -Wc,FLAG + -Xcompiler FLAG pass linker-specific FLAG directly to the compiler + -Wl,FLAG + -Xlinker FLAG pass linker-specific FLAG directly to the linker + -XCClinker FLAG pass link-specific FLAG to the compiler driver (CC) + +All other options (arguments beginning with '-') are ignored. + +Every other argument is treated as a filename. Files ending in '.la' are +treated as uninstalled libtool libraries, other files are standard or library +object files. + +If the OUTPUT-FILE ends in '.la', then a libtool library is created, +only library objects ('.lo' files) may be specified, and '-rpath' is +required, except when creating a convenience library. + +If OUTPUT-FILE ends in '.a' or '.lib', then a standard library is created +using 'ar' and 'ranlib', or on Windows using 'lib'. + +If OUTPUT-FILE ends in '.lo' or '.$objext', then a reloadable object file +is created, otherwise an executable program is created." + ;; + + uninstall) + $ECHO \ +"Usage: $progname [OPTION]... --mode=uninstall RM [RM-OPTION]... FILE... + +Remove libraries from an installation directory. + +RM is the name of the program to use to delete files associated with each FILE +(typically '/bin/rm'). RM-OPTIONS are options (such as '-f') to be passed +to RM. + +If FILE is a libtool library, all the files associated with it are deleted. +Otherwise, only FILE itself is deleted using RM." + ;; + + *) + func_fatal_help "invalid operation mode '$opt_mode'" + ;; + esac + + echo + $ECHO "Try '$progname --help' for more information about other modes." +} + +# Now that we've collected a possible --mode arg, show help if necessary +if $opt_help; then + if test : = "$opt_help"; then + func_mode_help + else + { + func_help noexit + for opt_mode in compile link execute install finish uninstall clean; do + func_mode_help + done + } | $SED -n '1p; 2,$s/^Usage:/ or: /p' + { + func_help noexit + for opt_mode in compile link execute install finish uninstall clean; do + echo + func_mode_help + done + } | + $SED '1d + /^When reporting/,/^Report/{ + H + d + } + $x + /information about other modes/d + /more detailed .*MODE/d + s/^Usage:.*--mode=\([^ ]*\) .*/Description of \1 mode:/' + fi + exit $? +fi + + +# func_mode_execute arg... +func_mode_execute () +{ + $debug_cmd + + # The first argument is the command name. + cmd=$nonopt + test -z "$cmd" && \ + func_fatal_help "you must specify a COMMAND" + + # Handle -dlopen flags immediately. + for file in $opt_dlopen; do + test -f "$file" \ + || func_fatal_help "'$file' is not a file" + + dir= + case $file in + *.la) + func_resolve_sysroot "$file" + file=$func_resolve_sysroot_result + + # Check to see that this really is a libtool archive. + func_lalib_unsafe_p "$file" \ + || func_fatal_help "'$lib' is not a valid libtool archive" + + # Read the libtool library. + dlname= + library_names= + func_source "$file" + + # Skip this library if it cannot be dlopened. + if test -z "$dlname"; then + # Warn if it was a shared library. + test -n "$library_names" && \ + func_warning "'$file' was not linked with '-export-dynamic'" + continue + fi + + func_dirname "$file" "" "." + dir=$func_dirname_result + + if test -f "$dir/$objdir/$dlname"; then + func_append dir "/$objdir" + else + if test ! -f "$dir/$dlname"; then + func_fatal_error "cannot find '$dlname' in '$dir' or '$dir/$objdir'" + fi + fi + ;; + + *.lo) + # Just add the directory containing the .lo file. + func_dirname "$file" "" "." + dir=$func_dirname_result + ;; + + *) + func_warning "'-dlopen' is ignored for non-libtool libraries and objects" + continue + ;; + esac + + # Get the absolute pathname. + absdir=`cd "$dir" && pwd` + test -n "$absdir" && dir=$absdir + + # Now add the directory to shlibpath_var. + if eval "test -z \"\$$shlibpath_var\""; then + eval "$shlibpath_var=\"\$dir\"" + else + eval "$shlibpath_var=\"\$dir:\$$shlibpath_var\"" + fi + done + + # This variable tells wrapper scripts just to set shlibpath_var + # rather than running their programs. + libtool_execute_magic=$magic + + # Check if any of the arguments is a wrapper script. + args= + for file + do + case $file in + -* | *.la | *.lo ) ;; + *) + # Do a test to see if this is really a libtool program. + if func_ltwrapper_script_p "$file"; then + func_source "$file" + # Transform arg to wrapped name. + file=$progdir/$program + elif func_ltwrapper_executable_p "$file"; then + func_ltwrapper_scriptname "$file" + func_source "$func_ltwrapper_scriptname_result" + # Transform arg to wrapped name. + file=$progdir/$program + fi + ;; + esac + # Quote arguments (to preserve shell metacharacters). + func_append_quoted args "$file" + done + + if $opt_dry_run; then + # Display what would be done. + if test -n "$shlibpath_var"; then + eval "\$ECHO \"\$shlibpath_var=\$$shlibpath_var\"" + echo "export $shlibpath_var" + fi + $ECHO "$cmd$args" + exit $EXIT_SUCCESS + else + if test -n "$shlibpath_var"; then + # Export the shlibpath_var. + eval "export $shlibpath_var" + fi + + # Restore saved environment variables + for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES + do + eval "if test \"\${save_$lt_var+set}\" = set; then + $lt_var=\$save_$lt_var; export $lt_var + else + $lt_unset $lt_var + fi" + done + + # Now prepare to actually exec the command. + exec_cmd=\$cmd$args + fi +} + +test execute = "$opt_mode" && func_mode_execute ${1+"$@"} + + +# func_mode_finish arg... +func_mode_finish () +{ + $debug_cmd + + libs= + libdirs= + admincmds= + + for opt in "$nonopt" ${1+"$@"} + do + if test -d "$opt"; then + func_append libdirs " $opt" + + elif test -f "$opt"; then + if func_lalib_unsafe_p "$opt"; then + func_append libs " $opt" + else + func_warning "'$opt' is not a valid libtool archive" + fi + + else + func_fatal_error "invalid argument '$opt'" + fi + done + + if test -n "$libs"; then + if test -n "$lt_sysroot"; then + sysroot_regex=`$ECHO "$lt_sysroot" | $SED "$sed_make_literal_regex"` + sysroot_cmd="s/\([ ']\)$sysroot_regex/\1/g;" + else + sysroot_cmd= + fi + + # Remove sysroot references + if $opt_dry_run; then + for lib in $libs; do + echo "removing references to $lt_sysroot and '=' prefixes from $lib" + done + else + tmpdir=`func_mktempdir` + for lib in $libs; do + $SED -e "$sysroot_cmd s/\([ ']-[LR]\)=/\1/g; s/\([ ']\)=/\1/g" $lib \ + > $tmpdir/tmp-la + mv -f $tmpdir/tmp-la $lib + done + ${RM}r "$tmpdir" + fi + fi + + if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then + for libdir in $libdirs; do + if test -n "$finish_cmds"; then + # Do each command in the finish commands. + func_execute_cmds "$finish_cmds" 'admincmds="$admincmds +'"$cmd"'"' + fi + if test -n "$finish_eval"; then + # Do the single finish_eval. + eval cmds=\"$finish_eval\" + $opt_dry_run || eval "$cmds" || func_append admincmds " + $cmds" + fi + done + fi + + # Exit here if they wanted silent mode. + $opt_quiet && exit $EXIT_SUCCESS + + if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then + echo "----------------------------------------------------------------------" + echo "Libraries have been installed in:" + for libdir in $libdirs; do + $ECHO " $libdir" + done + echo + echo "If you ever happen to want to link against installed libraries" + echo "in a given directory, LIBDIR, you must either use libtool, and" + echo "specify the full pathname of the library, or use the '-LLIBDIR'" + echo "flag during linking and do at least one of the following:" + if test -n "$shlibpath_var"; then + echo " - add LIBDIR to the '$shlibpath_var' environment variable" + echo " during execution" + fi + if test -n "$runpath_var"; then + echo " - add LIBDIR to the '$runpath_var' environment variable" + echo " during linking" + fi + if test -n "$hardcode_libdir_flag_spec"; then + libdir=LIBDIR + eval flag=\"$hardcode_libdir_flag_spec\" + + $ECHO " - use the '$flag' linker flag" + fi + if test -n "$admincmds"; then + $ECHO " - have your system administrator run these commands:$admincmds" + fi + if test -f /etc/ld.so.conf; then + echo " - have your system administrator add LIBDIR to '/etc/ld.so.conf'" + fi + echo + + echo "See any operating system documentation about shared libraries for" + case $host in + solaris2.[6789]|solaris2.1[0-9]) + echo "more information, such as the ld(1), crle(1) and ld.so(8) manual" + echo "pages." + ;; + *) + echo "more information, such as the ld(1) and ld.so(8) manual pages." + ;; + esac + echo "----------------------------------------------------------------------" + fi + exit $EXIT_SUCCESS +} + +test finish = "$opt_mode" && func_mode_finish ${1+"$@"} + + +# func_mode_install arg... +func_mode_install () +{ + $debug_cmd + + # There may be an optional sh(1) argument at the beginning of + # install_prog (especially on Windows NT). + if test "$SHELL" = "$nonopt" || test /bin/sh = "$nonopt" || + # Allow the use of GNU shtool's install command. + case $nonopt in *shtool*) :;; *) false;; esac + then + # Aesthetically quote it. + func_quote_for_eval "$nonopt" + install_prog="$func_quote_for_eval_result " + arg=$1 + shift + else + install_prog= + arg=$nonopt + fi + + # The real first argument should be the name of the installation program. + # Aesthetically quote it. + func_quote_for_eval "$arg" + func_append install_prog "$func_quote_for_eval_result" + install_shared_prog=$install_prog + case " $install_prog " in + *[\\\ /]cp\ *) install_cp=: ;; + *) install_cp=false ;; + esac + + # We need to accept at least all the BSD install flags. + dest= + files= + opts= + prev= + install_type= + isdir=false + stripme= + no_mode=: + for arg + do + arg2= + if test -n "$dest"; then + func_append files " $dest" + dest=$arg + continue + fi + + case $arg in + -d) isdir=: ;; + -f) + if $install_cp; then :; else + prev=$arg + fi + ;; + -g | -m | -o) + prev=$arg + ;; + -s) + stripme=" -s" + continue + ;; + -*) + ;; + *) + # If the previous option needed an argument, then skip it. + if test -n "$prev"; then + if test X-m = "X$prev" && test -n "$install_override_mode"; then + arg2=$install_override_mode + no_mode=false + fi + prev= + else + dest=$arg + continue + fi + ;; + esac + + # Aesthetically quote the argument. + func_quote_for_eval "$arg" + func_append install_prog " $func_quote_for_eval_result" + if test -n "$arg2"; then + func_quote_for_eval "$arg2" + fi + func_append install_shared_prog " $func_quote_for_eval_result" + done + + test -z "$install_prog" && \ + func_fatal_help "you must specify an install program" + + test -n "$prev" && \ + func_fatal_help "the '$prev' option requires an argument" + + if test -n "$install_override_mode" && $no_mode; then + if $install_cp; then :; else + func_quote_for_eval "$install_override_mode" + func_append install_shared_prog " -m $func_quote_for_eval_result" + fi + fi + + if test -z "$files"; then + if test -z "$dest"; then + func_fatal_help "no file or destination specified" + else + func_fatal_help "you must specify a destination" + fi + fi + + # Strip any trailing slash from the destination. + func_stripname '' '/' "$dest" + dest=$func_stripname_result + + # Check to see that the destination is a directory. + test -d "$dest" && isdir=: + if $isdir; then + destdir=$dest + destname= + else + func_dirname_and_basename "$dest" "" "." + destdir=$func_dirname_result + destname=$func_basename_result + + # Not a directory, so check to see that there is only one file specified. + set dummy $files; shift + test "$#" -gt 1 && \ + func_fatal_help "'$dest' is not a directory" + fi + case $destdir in + [\\/]* | [A-Za-z]:[\\/]*) ;; + *) + for file in $files; do + case $file in + *.lo) ;; + *) + func_fatal_help "'$destdir' must be an absolute directory name" + ;; + esac + done + ;; + esac + + # This variable tells wrapper scripts just to set variables rather + # than running their programs. + libtool_install_magic=$magic + + staticlibs= + future_libdirs= + current_libdirs= + for file in $files; do + + # Do each installation. + case $file in + *.$libext) + # Do the static libraries later. + func_append staticlibs " $file" + ;; + + *.la) + func_resolve_sysroot "$file" + file=$func_resolve_sysroot_result + + # Check to see that this really is a libtool archive. + func_lalib_unsafe_p "$file" \ + || func_fatal_help "'$file' is not a valid libtool archive" + + library_names= + old_library= + relink_command= + func_source "$file" + + # Add the libdir to current_libdirs if it is the destination. + if test "X$destdir" = "X$libdir"; then + case "$current_libdirs " in + *" $libdir "*) ;; + *) func_append current_libdirs " $libdir" ;; + esac + else + # Note the libdir as a future libdir. + case "$future_libdirs " in + *" $libdir "*) ;; + *) func_append future_libdirs " $libdir" ;; + esac + fi + + func_dirname "$file" "/" "" + dir=$func_dirname_result + func_append dir "$objdir" + + if test -n "$relink_command"; then + # Determine the prefix the user has applied to our future dir. + inst_prefix_dir=`$ECHO "$destdir" | $SED -e "s%$libdir\$%%"` + + # Don't allow the user to place us outside of our expected + # location b/c this prevents finding dependent libraries that + # are installed to the same prefix. + # At present, this check doesn't affect windows .dll's that + # are installed into $libdir/../bin (currently, that works fine) + # but it's something to keep an eye on. + test "$inst_prefix_dir" = "$destdir" && \ + func_fatal_error "error: cannot install '$file' to a directory not ending in $libdir" + + if test -n "$inst_prefix_dir"; then + # Stick the inst_prefix_dir data into the link command. + relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"` + else + relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%%"` + fi + + func_warning "relinking '$file'" + func_show_eval "$relink_command" \ + 'func_fatal_error "error: relink '\''$file'\'' with the above command before installing it"' + fi + + # See the names of the shared library. + set dummy $library_names; shift + if test -n "$1"; then + realname=$1 + shift + + srcname=$realname + test -n "$relink_command" && srcname=${realname}T + + # Install the shared library and build the symlinks. + func_show_eval "$install_shared_prog $dir/$srcname $destdir/$realname" \ + 'exit $?' + tstripme=$stripme + case $host_os in + cygwin* | mingw* | pw32* | cegcc*) + case $realname in + *.dll.a) + tstripme= + ;; + esac + ;; + os2*) + case $realname in + *_dll.a) + tstripme= + ;; + esac + ;; + esac + if test -n "$tstripme" && test -n "$striplib"; then + func_show_eval "$striplib $destdir/$realname" 'exit $?' + fi + + if test "$#" -gt 0; then + # Delete the old symlinks, and create new ones. + # Try 'ln -sf' first, because the 'ln' binary might depend on + # the symlink we replace! Solaris /bin/ln does not understand -f, + # so we also need to try rm && ln -s. + for linkname + do + test "$linkname" != "$realname" \ + && func_show_eval "(cd $destdir && { $LN_S -f $realname $linkname || { $RM $linkname && $LN_S $realname $linkname; }; })" + done + fi + + # Do each command in the postinstall commands. + lib=$destdir/$realname + func_execute_cmds "$postinstall_cmds" 'exit $?' + fi + + # Install the pseudo-library for information purposes. + func_basename "$file" + name=$func_basename_result + instname=$dir/${name}i + func_show_eval "$install_prog $instname $destdir/$name" 'exit $?' + + # Maybe install the static library, too. + test -n "$old_library" && func_append staticlibs " $dir/$old_library" + ;; + + *.lo) + # Install (i.e. copy) a libtool object. + + # Figure out destination file name, if it wasn't already specified. + if test -n "$destname"; then + destfile=$destdir/$destname + else + func_basename "$file" + destfile=$func_basename_result + destfile=$destdir/$destfile + fi + + # Deduce the name of the destination old-style object file. + case $destfile in + *.lo) + func_lo2o "$destfile" + staticdest=$func_lo2o_result + ;; + *.$objext) + staticdest=$destfile + destfile= + ;; + *) + func_fatal_help "cannot copy a libtool object to '$destfile'" + ;; + esac + + # Install the libtool object if requested. + test -n "$destfile" && \ + func_show_eval "$install_prog $file $destfile" 'exit $?' + + # Install the old object if enabled. + if test yes = "$build_old_libs"; then + # Deduce the name of the old-style object file. + func_lo2o "$file" + staticobj=$func_lo2o_result + func_show_eval "$install_prog \$staticobj \$staticdest" 'exit $?' + fi + exit $EXIT_SUCCESS + ;; + + *) + # Figure out destination file name, if it wasn't already specified. + if test -n "$destname"; then + destfile=$destdir/$destname + else + func_basename "$file" + destfile=$func_basename_result + destfile=$destdir/$destfile + fi + + # If the file is missing, and there is a .exe on the end, strip it + # because it is most likely a libtool script we actually want to + # install + stripped_ext= + case $file in + *.exe) + if test ! -f "$file"; then + func_stripname '' '.exe' "$file" + file=$func_stripname_result + stripped_ext=.exe + fi + ;; + esac + + # Do a test to see if this is really a libtool program. + case $host in + *cygwin* | *mingw*) + if func_ltwrapper_executable_p "$file"; then + func_ltwrapper_scriptname "$file" + wrapper=$func_ltwrapper_scriptname_result + else + func_stripname '' '.exe' "$file" + wrapper=$func_stripname_result + fi + ;; + *) + wrapper=$file + ;; + esac + if func_ltwrapper_script_p "$wrapper"; then + notinst_deplibs= + relink_command= + + func_source "$wrapper" + + # Check the variables that should have been set. + test -z "$generated_by_libtool_version" && \ + func_fatal_error "invalid libtool wrapper script '$wrapper'" + + finalize=: + for lib in $notinst_deplibs; do + # Check to see that each library is installed. + libdir= + if test -f "$lib"; then + func_source "$lib" + fi + libfile=$libdir/`$ECHO "$lib" | $SED 's%^.*/%%g'` + if test -n "$libdir" && test ! -f "$libfile"; then + func_warning "'$lib' has not been installed in '$libdir'" + finalize=false + fi + done + + relink_command= + func_source "$wrapper" + + outputname= + if test no = "$fast_install" && test -n "$relink_command"; then + $opt_dry_run || { + if $finalize; then + tmpdir=`func_mktempdir` + func_basename "$file$stripped_ext" + file=$func_basename_result + outputname=$tmpdir/$file + # Replace the output file specification. + relink_command=`$ECHO "$relink_command" | $SED 's%@OUTPUT@%'"$outputname"'%g'` + + $opt_quiet || { + func_quote_for_expand "$relink_command" + eval "func_echo $func_quote_for_expand_result" + } + if eval "$relink_command"; then : + else + func_error "error: relink '$file' with the above command before installing it" + $opt_dry_run || ${RM}r "$tmpdir" + continue + fi + file=$outputname + else + func_warning "cannot relink '$file'" + fi + } + else + # Install the binary that we compiled earlier. + file=`$ECHO "$file$stripped_ext" | $SED "s%\([^/]*\)$%$objdir/\1%"` + fi + fi + + # remove .exe since cygwin /usr/bin/install will append another + # one anyway + case $install_prog,$host in + */usr/bin/install*,*cygwin*) + case $file:$destfile in + *.exe:*.exe) + # this is ok + ;; + *.exe:*) + destfile=$destfile.exe + ;; + *:*.exe) + func_stripname '' '.exe' "$destfile" + destfile=$func_stripname_result + ;; + esac + ;; + esac + func_show_eval "$install_prog\$stripme \$file \$destfile" 'exit $?' + $opt_dry_run || if test -n "$outputname"; then + ${RM}r "$tmpdir" + fi + ;; + esac + done + + for file in $staticlibs; do + func_basename "$file" + name=$func_basename_result + + # Set up the ranlib parameters. + oldlib=$destdir/$name + func_to_tool_file "$oldlib" func_convert_file_msys_to_w32 + tool_oldlib=$func_to_tool_file_result + + func_show_eval "$install_prog \$file \$oldlib" 'exit $?' + + if test -n "$stripme" && test -n "$old_striplib"; then + func_show_eval "$old_striplib $tool_oldlib" 'exit $?' + fi + + # Do each command in the postinstall commands. + func_execute_cmds "$old_postinstall_cmds" 'exit $?' + done + + test -n "$future_libdirs" && \ + func_warning "remember to run '$progname --finish$future_libdirs'" + + if test -n "$current_libdirs"; then + # Maybe just do a dry run. + $opt_dry_run && current_libdirs=" -n$current_libdirs" + exec_cmd='$SHELL "$progpath" $preserve_args --finish$current_libdirs' + else + exit $EXIT_SUCCESS + fi +} + +test install = "$opt_mode" && func_mode_install ${1+"$@"} + + +# func_generate_dlsyms outputname originator pic_p +# Extract symbols from dlprefiles and create ${outputname}S.o with +# a dlpreopen symbol table. +func_generate_dlsyms () +{ + $debug_cmd + + my_outputname=$1 + my_originator=$2 + my_pic_p=${3-false} + my_prefix=`$ECHO "$my_originator" | $SED 's%[^a-zA-Z0-9]%_%g'` + my_dlsyms= + + if test -n "$dlfiles$dlprefiles" || test no != "$dlself"; then + if test -n "$NM" && test -n "$global_symbol_pipe"; then + my_dlsyms=${my_outputname}S.c + else + func_error "not configured to extract global symbols from dlpreopened files" + fi + fi + + if test -n "$my_dlsyms"; then + case $my_dlsyms in + "") ;; + *.c) + # Discover the nlist of each of the dlfiles. + nlist=$output_objdir/$my_outputname.nm + + func_show_eval "$RM $nlist ${nlist}S ${nlist}T" + + # Parse the name list into a source file. + func_verbose "creating $output_objdir/$my_dlsyms" + + $opt_dry_run || $ECHO > "$output_objdir/$my_dlsyms" "\ +/* $my_dlsyms - symbol resolution table for '$my_outputname' dlsym emulation. */ +/* Generated by $PROGRAM (GNU $PACKAGE) $VERSION */ + +#ifdef __cplusplus +extern \"C\" { +#endif + +#if defined __GNUC__ && (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4)) || (__GNUC__ > 4)) +#pragma GCC diagnostic ignored \"-Wstrict-prototypes\" +#endif + +/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */ +#if defined _WIN32 || defined __CYGWIN__ || defined _WIN32_WCE +/* DATA imports from DLLs on WIN32 can't be const, because runtime + relocations are performed -- see ld's documentation on pseudo-relocs. */ +# define LT_DLSYM_CONST +#elif defined __osf__ +/* This system does not cope well with relocations in const data. */ +# define LT_DLSYM_CONST +#else +# define LT_DLSYM_CONST const +#endif + +#define STREQ(s1, s2) (strcmp ((s1), (s2)) == 0) + +/* External symbol declarations for the compiler. */\ +" + + if test yes = "$dlself"; then + func_verbose "generating symbol list for '$output'" + + $opt_dry_run || echo ': @PROGRAM@ ' > "$nlist" + + # Add our own program objects to the symbol list. + progfiles=`$ECHO "$objs$old_deplibs" | $SP2NL | $SED "$lo2o" | $NL2SP` + for progfile in $progfiles; do + func_to_tool_file "$progfile" func_convert_file_msys_to_w32 + func_verbose "extracting global C symbols from '$func_to_tool_file_result'" + $opt_dry_run || eval "$NM $func_to_tool_file_result | $global_symbol_pipe >> '$nlist'" + done + + if test -n "$exclude_expsyms"; then + $opt_dry_run || { + eval '$EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T' + eval '$MV "$nlist"T "$nlist"' + } + fi + + if test -n "$export_symbols_regex"; then + $opt_dry_run || { + eval '$EGREP -e "$export_symbols_regex" "$nlist" > "$nlist"T' + eval '$MV "$nlist"T "$nlist"' + } + fi + + # Prepare the list of exported symbols + if test -z "$export_symbols"; then + export_symbols=$output_objdir/$outputname.exp + $opt_dry_run || { + $RM $export_symbols + eval "$SED -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' "'< "$nlist" > "$export_symbols"' + case $host in + *cygwin* | *mingw* | *cegcc* ) + eval "echo EXPORTS "'> "$output_objdir/$outputname.def"' + eval 'cat "$export_symbols" >> "$output_objdir/$outputname.def"' + ;; + esac + } + else + $opt_dry_run || { + eval "$SED -e 's/\([].[*^$]\)/\\\\\1/g' -e 's/^/ /' -e 's/$/$/'"' < "$export_symbols" > "$output_objdir/$outputname.exp"' + eval '$GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T' + eval '$MV "$nlist"T "$nlist"' + case $host in + *cygwin* | *mingw* | *cegcc* ) + eval "echo EXPORTS "'> "$output_objdir/$outputname.def"' + eval 'cat "$nlist" >> "$output_objdir/$outputname.def"' + ;; + esac + } + fi + fi + + for dlprefile in $dlprefiles; do + func_verbose "extracting global C symbols from '$dlprefile'" + func_basename "$dlprefile" + name=$func_basename_result + case $host in + *cygwin* | *mingw* | *cegcc* ) + # if an import library, we need to obtain dlname + if func_win32_import_lib_p "$dlprefile"; then + func_tr_sh "$dlprefile" + eval "curr_lafile=\$libfile_$func_tr_sh_result" + dlprefile_dlbasename= + if test -n "$curr_lafile" && func_lalib_p "$curr_lafile"; then + # Use subshell, to avoid clobbering current variable values + dlprefile_dlname=`source "$curr_lafile" && echo "$dlname"` + if test -n "$dlprefile_dlname"; then + func_basename "$dlprefile_dlname" + dlprefile_dlbasename=$func_basename_result + else + # no lafile. user explicitly requested -dlpreopen . + $sharedlib_from_linklib_cmd "$dlprefile" + dlprefile_dlbasename=$sharedlib_from_linklib_result + fi + fi + $opt_dry_run || { + if test -n "$dlprefile_dlbasename"; then + eval '$ECHO ": $dlprefile_dlbasename" >> "$nlist"' + else + func_warning "Could not compute DLL name from $name" + eval '$ECHO ": $name " >> "$nlist"' + fi + func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 + eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe | + $SED -e '/I __imp/d' -e 's/I __nm_/D /;s/_nm__//' >> '$nlist'" + } + else # not an import lib + $opt_dry_run || { + eval '$ECHO ": $name " >> "$nlist"' + func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 + eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'" + } + fi + ;; + *) + $opt_dry_run || { + eval '$ECHO ": $name " >> "$nlist"' + func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 + eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'" + } + ;; + esac + done + + $opt_dry_run || { + # Make sure we have at least an empty file. + test -f "$nlist" || : > "$nlist" + + if test -n "$exclude_expsyms"; then + $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T + $MV "$nlist"T "$nlist" + fi + + # Try sorting and uniquifying the output. + if $GREP -v "^: " < "$nlist" | + if sort -k 3 /dev/null 2>&1; then + sort -k 3 + else + sort +2 + fi | + uniq > "$nlist"S; then + : + else + $GREP -v "^: " < "$nlist" > "$nlist"S + fi + + if test -f "$nlist"S; then + eval "$global_symbol_to_cdecl"' < "$nlist"S >> "$output_objdir/$my_dlsyms"' + else + echo '/* NONE */' >> "$output_objdir/$my_dlsyms" + fi + + func_show_eval '$RM "${nlist}I"' + if test -n "$global_symbol_to_import"; then + eval "$global_symbol_to_import"' < "$nlist"S > "$nlist"I' + fi + + echo >> "$output_objdir/$my_dlsyms" "\ + +/* The mapping between symbol names and symbols. */ +typedef struct { + const char *name; + void *address; +} lt_dlsymlist; +extern LT_DLSYM_CONST lt_dlsymlist +lt_${my_prefix}_LTX_preloaded_symbols[];\ +" + + if test -s "$nlist"I; then + echo >> "$output_objdir/$my_dlsyms" "\ +static void lt_syminit(void) +{ + LT_DLSYM_CONST lt_dlsymlist *symbol = lt_${my_prefix}_LTX_preloaded_symbols; + for (; symbol->name; ++symbol) + {" + $SED 's/.*/ if (STREQ (symbol->name, \"&\")) symbol->address = (void *) \&&;/' < "$nlist"I >> "$output_objdir/$my_dlsyms" + echo >> "$output_objdir/$my_dlsyms" "\ + } +}" + fi + echo >> "$output_objdir/$my_dlsyms" "\ +LT_DLSYM_CONST lt_dlsymlist +lt_${my_prefix}_LTX_preloaded_symbols[] = +{ {\"$my_originator\", (void *) 0}," + + if test -s "$nlist"I; then + echo >> "$output_objdir/$my_dlsyms" "\ + {\"@INIT@\", (void *) <_syminit}," + fi + + case $need_lib_prefix in + no) + eval "$global_symbol_to_c_name_address" < "$nlist" >> "$output_objdir/$my_dlsyms" + ;; + *) + eval "$global_symbol_to_c_name_address_lib_prefix" < "$nlist" >> "$output_objdir/$my_dlsyms" + ;; + esac + echo >> "$output_objdir/$my_dlsyms" "\ + {0, (void *) 0} +}; + +/* This works around a problem in FreeBSD linker */ +#ifdef FREEBSD_WORKAROUND +static const void *lt_preloaded_setup() { + return lt_${my_prefix}_LTX_preloaded_symbols; +} +#endif + +#ifdef __cplusplus +} +#endif\ +" + } # !$opt_dry_run + + pic_flag_for_symtable= + case "$compile_command " in + *" -static "*) ;; + *) + case $host in + # compiling the symbol table file with pic_flag works around + # a FreeBSD bug that causes programs to crash when -lm is + # linked before any other PIC object. But we must not use + # pic_flag when linking with -static. The problem exists in + # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1. + *-*-freebsd2.*|*-*-freebsd3.0*|*-*-freebsdelf3.0*) + pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;; + *-*-hpux*) + pic_flag_for_symtable=" $pic_flag" ;; + *) + $my_pic_p && pic_flag_for_symtable=" $pic_flag" + ;; + esac + ;; + esac + symtab_cflags= + for arg in $LTCFLAGS; do + case $arg in + -pie | -fpie | -fPIE) ;; + *) func_append symtab_cflags " $arg" ;; + esac + done + + # Now compile the dynamic symbol file. + func_show_eval '(cd $output_objdir && $LTCC$symtab_cflags -c$no_builtin_flag$pic_flag_for_symtable "$my_dlsyms")' 'exit $?' + + # Clean up the generated files. + func_show_eval '$RM "$output_objdir/$my_dlsyms" "$nlist" "${nlist}S" "${nlist}T" "${nlist}I"' + + # Transform the symbol file into the correct name. + symfileobj=$output_objdir/${my_outputname}S.$objext + case $host in + *cygwin* | *mingw* | *cegcc* ) + if test -f "$output_objdir/$my_outputname.def"; then + compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"` + finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"` + else + compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"` + finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"` + fi + ;; + *) + compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"` + finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"` + ;; + esac + ;; + *) + func_fatal_error "unknown suffix for '$my_dlsyms'" + ;; + esac + else + # We keep going just in case the user didn't refer to + # lt_preloaded_symbols. The linker will fail if global_symbol_pipe + # really was required. + + # Nullify the symbol file. + compile_command=`$ECHO "$compile_command" | $SED "s% @SYMFILE@%%"` + finalize_command=`$ECHO "$finalize_command" | $SED "s% @SYMFILE@%%"` + fi +} + +# func_cygming_gnu_implib_p ARG +# This predicate returns with zero status (TRUE) if +# ARG is a GNU/binutils-style import library. Returns +# with nonzero status (FALSE) otherwise. +func_cygming_gnu_implib_p () +{ + $debug_cmd + + func_to_tool_file "$1" func_convert_file_msys_to_w32 + func_cygming_gnu_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $EGREP ' (_head_[A-Za-z0-9_]+_[ad]l*|[A-Za-z0-9_]+_[ad]l*_iname)$'` + test -n "$func_cygming_gnu_implib_tmp" +} + +# func_cygming_ms_implib_p ARG +# This predicate returns with zero status (TRUE) if +# ARG is an MS-style import library. Returns +# with nonzero status (FALSE) otherwise. +func_cygming_ms_implib_p () +{ + $debug_cmd + + func_to_tool_file "$1" func_convert_file_msys_to_w32 + func_cygming_ms_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $GREP '_NULL_IMPORT_DESCRIPTOR'` + test -n "$func_cygming_ms_implib_tmp" +} + +# func_win32_libid arg +# return the library type of file 'arg' +# +# Need a lot of goo to handle *both* DLLs and import libs +# Has to be a shell function in order to 'eat' the argument +# that is supplied when $file_magic_command is called. +# Despite the name, also deal with 64 bit binaries. +func_win32_libid () +{ + $debug_cmd + + win32_libid_type=unknown + win32_fileres=`file -L $1 2>/dev/null` + case $win32_fileres in + *ar\ archive\ import\ library*) # definitely import + win32_libid_type="x86 archive import" + ;; + *ar\ archive*) # could be an import, or static + # Keep the egrep pattern in sync with the one in _LT_CHECK_MAGIC_METHOD. + if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null | + $EGREP 'file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' >/dev/null; then + case $nm_interface in + "MS dumpbin") + if func_cygming_ms_implib_p "$1" || + func_cygming_gnu_implib_p "$1" + then + win32_nmres=import + else + win32_nmres= + fi + ;; + *) + func_to_tool_file "$1" func_convert_file_msys_to_w32 + win32_nmres=`eval $NM -f posix -A \"$func_to_tool_file_result\" | + $SED -n -e ' + 1,100{ + / I /{ + s|.*|import| + p + q + } + }'` + ;; + esac + case $win32_nmres in + import*) win32_libid_type="x86 archive import";; + *) win32_libid_type="x86 archive static";; + esac + fi + ;; + *DLL*) + win32_libid_type="x86 DLL" + ;; + *executable*) # but shell scripts are "executable" too... + case $win32_fileres in + *MS\ Windows\ PE\ Intel*) + win32_libid_type="x86 DLL" + ;; + esac + ;; + esac + $ECHO "$win32_libid_type" +} + +# func_cygming_dll_for_implib ARG +# +# Platform-specific function to extract the +# name of the DLL associated with the specified +# import library ARG. +# Invoked by eval'ing the libtool variable +# $sharedlib_from_linklib_cmd +# Result is available in the variable +# $sharedlib_from_linklib_result +func_cygming_dll_for_implib () +{ + $debug_cmd + + sharedlib_from_linklib_result=`$DLLTOOL --identify-strict --identify "$1"` +} + +# func_cygming_dll_for_implib_fallback_core SECTION_NAME LIBNAMEs +# +# The is the core of a fallback implementation of a +# platform-specific function to extract the name of the +# DLL associated with the specified import library LIBNAME. +# +# SECTION_NAME is either .idata$6 or .idata$7, depending +# on the platform and compiler that created the implib. +# +# Echos the name of the DLL associated with the +# specified import library. +func_cygming_dll_for_implib_fallback_core () +{ + $debug_cmd + + match_literal=`$ECHO "$1" | $SED "$sed_make_literal_regex"` + $OBJDUMP -s --section "$1" "$2" 2>/dev/null | + $SED '/^Contents of section '"$match_literal"':/{ + # Place marker at beginning of archive member dllname section + s/.*/====MARK====/ + p + d + } + # These lines can sometimes be longer than 43 characters, but + # are always uninteresting + /:[ ]*file format pe[i]\{,1\}-/d + /^In archive [^:]*:/d + # Ensure marker is printed + /^====MARK====/p + # Remove all lines with less than 43 characters + /^.\{43\}/!d + # From remaining lines, remove first 43 characters + s/^.\{43\}//' | + $SED -n ' + # Join marker and all lines until next marker into a single line + /^====MARK====/ b para + H + $ b para + b + :para + x + s/\n//g + # Remove the marker + s/^====MARK====// + # Remove trailing dots and whitespace + s/[\. \t]*$// + # Print + /./p' | + # we now have a list, one entry per line, of the stringified + # contents of the appropriate section of all members of the + # archive that possess that section. Heuristic: eliminate + # all those that have a first or second character that is + # a '.' (that is, objdump's representation of an unprintable + # character.) This should work for all archives with less than + # 0x302f exports -- but will fail for DLLs whose name actually + # begins with a literal '.' or a single character followed by + # a '.'. + # + # Of those that remain, print the first one. + $SED -e '/^\./d;/^.\./d;q' +} + +# func_cygming_dll_for_implib_fallback ARG +# Platform-specific function to extract the +# name of the DLL associated with the specified +# import library ARG. +# +# This fallback implementation is for use when $DLLTOOL +# does not support the --identify-strict option. +# Invoked by eval'ing the libtool variable +# $sharedlib_from_linklib_cmd +# Result is available in the variable +# $sharedlib_from_linklib_result +func_cygming_dll_for_implib_fallback () +{ + $debug_cmd + + if func_cygming_gnu_implib_p "$1"; then + # binutils import library + sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$7' "$1"` + elif func_cygming_ms_implib_p "$1"; then + # ms-generated import library + sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$6' "$1"` + else + # unknown + sharedlib_from_linklib_result= + fi +} + + +# func_extract_an_archive dir oldlib +func_extract_an_archive () +{ + $debug_cmd + + f_ex_an_ar_dir=$1; shift + f_ex_an_ar_oldlib=$1 + if test yes = "$lock_old_archive_extraction"; then + lockfile=$f_ex_an_ar_oldlib.lock + until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do + func_echo "Waiting for $lockfile to be removed" + sleep 2 + done + fi + func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" \ + 'stat=$?; rm -f "$lockfile"; exit $stat' + if test yes = "$lock_old_archive_extraction"; then + $opt_dry_run || rm -f "$lockfile" + fi + if ($AR t "$f_ex_an_ar_oldlib" | sort | sort -uc >/dev/null 2>&1); then + : + else + func_fatal_error "object name conflicts in archive: $f_ex_an_ar_dir/$f_ex_an_ar_oldlib" + fi +} + + +# func_extract_archives gentop oldlib ... +func_extract_archives () +{ + $debug_cmd + + my_gentop=$1; shift + my_oldlibs=${1+"$@"} + my_oldobjs= + my_xlib= + my_xabs= + my_xdir= + + for my_xlib in $my_oldlibs; do + # Extract the objects. + case $my_xlib in + [\\/]* | [A-Za-z]:[\\/]*) my_xabs=$my_xlib ;; + *) my_xabs=`pwd`"/$my_xlib" ;; + esac + func_basename "$my_xlib" + my_xlib=$func_basename_result + my_xlib_u=$my_xlib + while :; do + case " $extracted_archives " in + *" $my_xlib_u "*) + func_arith $extracted_serial + 1 + extracted_serial=$func_arith_result + my_xlib_u=lt$extracted_serial-$my_xlib ;; + *) break ;; + esac + done + extracted_archives="$extracted_archives $my_xlib_u" + my_xdir=$my_gentop/$my_xlib_u + + func_mkdir_p "$my_xdir" + + case $host in + *-darwin*) + func_verbose "Extracting $my_xabs" + # Do not bother doing anything if just a dry run + $opt_dry_run || { + darwin_orig_dir=`pwd` + cd $my_xdir || exit $? + darwin_archive=$my_xabs + darwin_curdir=`pwd` + func_basename "$darwin_archive" + darwin_base_archive=$func_basename_result + darwin_arches=`$LIPO -info "$darwin_archive" 2>/dev/null | $GREP Architectures 2>/dev/null || true` + if test -n "$darwin_arches"; then + darwin_arches=`$ECHO "$darwin_arches" | $SED -e 's/.*are://'` + darwin_arch= + func_verbose "$darwin_base_archive has multiple architectures $darwin_arches" + for darwin_arch in $darwin_arches; do + func_mkdir_p "unfat-$$/$darwin_base_archive-$darwin_arch" + $LIPO -thin $darwin_arch -output "unfat-$$/$darwin_base_archive-$darwin_arch/$darwin_base_archive" "$darwin_archive" + cd "unfat-$$/$darwin_base_archive-$darwin_arch" + func_extract_an_archive "`pwd`" "$darwin_base_archive" + cd "$darwin_curdir" + $RM "unfat-$$/$darwin_base_archive-$darwin_arch/$darwin_base_archive" + done # $darwin_arches + ## Okay now we've a bunch of thin objects, gotta fatten them up :) + darwin_filelist=`find unfat-$$ -type f -name \*.o -print -o -name \*.lo -print | $SED -e "$sed_basename" | sort -u` + darwin_file= + darwin_files= + for darwin_file in $darwin_filelist; do + darwin_files=`find unfat-$$ -name $darwin_file -print | sort | $NL2SP` + $LIPO -create -output "$darwin_file" $darwin_files + done # $darwin_filelist + $RM -rf unfat-$$ + cd "$darwin_orig_dir" + else + cd $darwin_orig_dir + func_extract_an_archive "$my_xdir" "$my_xabs" + fi # $darwin_arches + } # !$opt_dry_run + ;; + *) + func_extract_an_archive "$my_xdir" "$my_xabs" + ;; + esac + my_oldobjs="$my_oldobjs "`find $my_xdir -name \*.$objext -print -o -name \*.lo -print | sort | $NL2SP` + done + + func_extract_archives_result=$my_oldobjs +} + + +# func_emit_wrapper [arg=no] +# +# Emit a libtool wrapper script on stdout. +# Don't directly open a file because we may want to +# incorporate the script contents within a cygwin/mingw +# wrapper executable. Must ONLY be called from within +# func_mode_link because it depends on a number of variables +# set therein. +# +# ARG is the value that the WRAPPER_SCRIPT_BELONGS_IN_OBJDIR +# variable will take. If 'yes', then the emitted script +# will assume that the directory where it is stored is +# the $objdir directory. This is a cygwin/mingw-specific +# behavior. +func_emit_wrapper () +{ + func_emit_wrapper_arg1=${1-no} + + $ECHO "\ +#! $SHELL + +# $output - temporary wrapper script for $objdir/$outputname +# Generated by $PROGRAM (GNU $PACKAGE) $VERSION +# +# The $output program cannot be directly executed until all the libtool +# libraries that it depends on are installed. +# +# This wrapper script should never be moved out of the build directory. +# If it is, it will not operate correctly. + +# Sed substitution that helps us do robust quoting. It backslashifies +# metacharacters that are still active within double-quoted strings. +sed_quote_subst='$sed_quote_subst' + +# Be Bourne compatible +if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then + emulate sh + NULLCMD=: + # Zsh 3.x and 4.x performs word splitting on \${1+\"\$@\"}, which + # is contrary to our usage. Disable this feature. + alias -g '\${1+\"\$@\"}'='\"\$@\"' + setopt NO_GLOB_SUBST +else + case \`(set -o) 2>/dev/null\` in *posix*) set -o posix;; esac +fi +BIN_SH=xpg4; export BIN_SH # for Tru64 +DUALCASE=1; export DUALCASE # for MKS sh + +# The HP-UX ksh and POSIX shell print the target directory to stdout +# if CDPATH is set. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +relink_command=\"$relink_command\" + +# This environment variable determines our operation mode. +if test \"\$libtool_install_magic\" = \"$magic\"; then + # install mode needs the following variables: + generated_by_libtool_version='$macro_version' + notinst_deplibs='$notinst_deplibs' +else + # When we are sourced in execute mode, \$file and \$ECHO are already set. + if test \"\$libtool_execute_magic\" != \"$magic\"; then + file=\"\$0\"" + + qECHO=`$ECHO "$ECHO" | $SED "$sed_quote_subst"` + $ECHO "\ + +# A function that is used when there is no print builtin or printf. +func_fallback_echo () +{ + eval 'cat <<_LTECHO_EOF +\$1 +_LTECHO_EOF' +} + ECHO=\"$qECHO\" + fi + +# Very basic option parsing. These options are (a) specific to +# the libtool wrapper, (b) are identical between the wrapper +# /script/ and the wrapper /executable/ that is used only on +# windows platforms, and (c) all begin with the string "--lt-" +# (application programs are unlikely to have options that match +# this pattern). +# +# There are only two supported options: --lt-debug and +# --lt-dump-script. There is, deliberately, no --lt-help. +# +# The first argument to this parsing function should be the +# script's $0 value, followed by "$@". +lt_option_debug= +func_parse_lt_options () +{ + lt_script_arg0=\$0 + shift + for lt_opt + do + case \"\$lt_opt\" in + --lt-debug) lt_option_debug=1 ;; + --lt-dump-script) + lt_dump_D=\`\$ECHO \"X\$lt_script_arg0\" | $SED -e 's/^X//' -e 's%/[^/]*$%%'\` + test \"X\$lt_dump_D\" = \"X\$lt_script_arg0\" && lt_dump_D=. + lt_dump_F=\`\$ECHO \"X\$lt_script_arg0\" | $SED -e 's/^X//' -e 's%^.*/%%'\` + cat \"\$lt_dump_D/\$lt_dump_F\" + exit 0 + ;; + --lt-*) + \$ECHO \"Unrecognized --lt- option: '\$lt_opt'\" 1>&2 + exit 1 + ;; + esac + done + + # Print the debug banner immediately: + if test -n \"\$lt_option_debug\"; then + echo \"$outputname:$output:\$LINENO: libtool wrapper (GNU $PACKAGE) $VERSION\" 1>&2 + fi +} + +# Used when --lt-debug. Prints its arguments to stdout +# (redirection is the responsibility of the caller) +func_lt_dump_args () +{ + lt_dump_args_N=1; + for lt_arg + do + \$ECHO \"$outputname:$output:\$LINENO: newargv[\$lt_dump_args_N]: \$lt_arg\" + lt_dump_args_N=\`expr \$lt_dump_args_N + 1\` + done +} + +# Core function for launching the target application +func_exec_program_core () +{ +" + case $host in + # Backslashes separate directories on plain windows + *-*-mingw | *-*-os2* | *-cegcc*) + $ECHO "\ + if test -n \"\$lt_option_debug\"; then + \$ECHO \"$outputname:$output:\$LINENO: newargv[0]: \$progdir\\\\\$program\" 1>&2 + func_lt_dump_args \${1+\"\$@\"} 1>&2 + fi + exec \"\$progdir\\\\\$program\" \${1+\"\$@\"} +" + ;; + + *) + $ECHO "\ + if test -n \"\$lt_option_debug\"; then + \$ECHO \"$outputname:$output:\$LINENO: newargv[0]: \$progdir/\$program\" 1>&2 + func_lt_dump_args \${1+\"\$@\"} 1>&2 + fi + exec \"\$progdir/\$program\" \${1+\"\$@\"} +" + ;; + esac + $ECHO "\ + \$ECHO \"\$0: cannot exec \$program \$*\" 1>&2 + exit 1 +} + +# A function to encapsulate launching the target application +# Strips options in the --lt-* namespace from \$@ and +# launches target application with the remaining arguments. +func_exec_program () +{ + case \" \$* \" in + *\\ --lt-*) + for lt_wr_arg + do + case \$lt_wr_arg in + --lt-*) ;; + *) set x \"\$@\" \"\$lt_wr_arg\"; shift;; + esac + shift + done ;; + esac + func_exec_program_core \${1+\"\$@\"} +} + + # Parse options + func_parse_lt_options \"\$0\" \${1+\"\$@\"} + + # Find the directory that this script lives in. + thisdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*$%%'\` + test \"x\$thisdir\" = \"x\$file\" && thisdir=. + + # Follow symbolic links until we get to the real thisdir. + file=\`ls -ld \"\$file\" | $SED -n 's/.*-> //p'\` + while test -n \"\$file\"; do + destdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*\$%%'\` + + # If there was a directory component, then change thisdir. + if test \"x\$destdir\" != \"x\$file\"; then + case \"\$destdir\" in + [\\\\/]* | [A-Za-z]:[\\\\/]*) thisdir=\"\$destdir\" ;; + *) thisdir=\"\$thisdir/\$destdir\" ;; + esac + fi + + file=\`\$ECHO \"\$file\" | $SED 's%^.*/%%'\` + file=\`ls -ld \"\$thisdir/\$file\" | $SED -n 's/.*-> //p'\` + done + + # Usually 'no', except on cygwin/mingw when embedded into + # the cwrapper. + WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=$func_emit_wrapper_arg1 + if test \"\$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR\" = \"yes\"; then + # special case for '.' + if test \"\$thisdir\" = \".\"; then + thisdir=\`pwd\` + fi + # remove .libs from thisdir + case \"\$thisdir\" in + *[\\\\/]$objdir ) thisdir=\`\$ECHO \"\$thisdir\" | $SED 's%[\\\\/][^\\\\/]*$%%'\` ;; + $objdir ) thisdir=. ;; + esac + fi + + # Try to get the absolute directory name. + absdir=\`cd \"\$thisdir\" && pwd\` + test -n \"\$absdir\" && thisdir=\"\$absdir\" +" + + if test yes = "$fast_install"; then + $ECHO "\ + program=lt-'$outputname'$exeext + progdir=\"\$thisdir/$objdir\" + + if test ! -f \"\$progdir/\$program\" || + { file=\`ls -1dt \"\$progdir/\$program\" \"\$progdir/../\$program\" 2>/dev/null | $SED 1q\`; \\ + test \"X\$file\" != \"X\$progdir/\$program\"; }; then + + file=\"\$\$-\$program\" + + if test ! -d \"\$progdir\"; then + $MKDIR \"\$progdir\" + else + $RM \"\$progdir/\$file\" + fi" + + $ECHO "\ + + # relink executable if necessary + if test -n \"\$relink_command\"; then + if relink_command_output=\`eval \$relink_command 2>&1\`; then : + else + \$ECHO \"\$relink_command_output\" >&2 + $RM \"\$progdir/\$file\" + exit 1 + fi + fi + + $MV \"\$progdir/\$file\" \"\$progdir/\$program\" 2>/dev/null || + { $RM \"\$progdir/\$program\"; + $MV \"\$progdir/\$file\" \"\$progdir/\$program\"; } + $RM \"\$progdir/\$file\" + fi" + else + $ECHO "\ + program='$outputname' + progdir=\"\$thisdir/$objdir\" +" + fi + + $ECHO "\ + + if test -f \"\$progdir/\$program\"; then" + + # fixup the dll searchpath if we need to. + # + # Fix the DLL searchpath if we need to. Do this before prepending + # to shlibpath, because on Windows, both are PATH and uninstalled + # libraries must come first. + if test -n "$dllsearchpath"; then + $ECHO "\ + # Add the dll search path components to the executable PATH + PATH=$dllsearchpath:\$PATH +" + fi + + # Export our shlibpath_var if we have one. + if test yes = "$shlibpath_overrides_runpath" && test -n "$shlibpath_var" && test -n "$temp_rpath"; then + $ECHO "\ + # Add our own library path to $shlibpath_var + $shlibpath_var=\"$temp_rpath\$$shlibpath_var\" + + # Some systems cannot cope with colon-terminated $shlibpath_var + # The second colon is a workaround for a bug in BeOS R4 sed + $shlibpath_var=\`\$ECHO \"\$$shlibpath_var\" | $SED 's/::*\$//'\` + + export $shlibpath_var +" + fi + + $ECHO "\ + if test \"\$libtool_execute_magic\" != \"$magic\"; then + # Run the actual program with our arguments. + func_exec_program \${1+\"\$@\"} + fi + else + # The program doesn't exist. + \$ECHO \"\$0: error: '\$progdir/\$program' does not exist\" 1>&2 + \$ECHO \"This script is just a wrapper for \$program.\" 1>&2 + \$ECHO \"See the $PACKAGE documentation for more information.\" 1>&2 + exit 1 + fi +fi\ +" +} + + +# func_emit_cwrapperexe_src +# emit the source code for a wrapper executable on stdout +# Must ONLY be called from within func_mode_link because +# it depends on a number of variable set therein. +func_emit_cwrapperexe_src () +{ + cat < +#include +#ifdef _MSC_VER +# include +# include +# include +#else +# include +# include +# ifdef __CYGWIN__ +# include +# endif +#endif +#include +#include +#include +#include +#include +#include +#include +#include + +#define STREQ(s1, s2) (strcmp ((s1), (s2)) == 0) + +/* declarations of non-ANSI functions */ +#if defined __MINGW32__ +# ifdef __STRICT_ANSI__ +int _putenv (const char *); +# endif +#elif defined __CYGWIN__ +# ifdef __STRICT_ANSI__ +char *realpath (const char *, char *); +int putenv (char *); +int setenv (const char *, const char *, int); +# endif +/* #elif defined other_platform || defined ... */ +#endif + +/* portability defines, excluding path handling macros */ +#if defined _MSC_VER +# define setmode _setmode +# define stat _stat +# define chmod _chmod +# define getcwd _getcwd +# define putenv _putenv +# define S_IXUSR _S_IEXEC +#elif defined __MINGW32__ +# define setmode _setmode +# define stat _stat +# define chmod _chmod +# define getcwd _getcwd +# define putenv _putenv +#elif defined __CYGWIN__ +# define HAVE_SETENV +# define FOPEN_WB "wb" +/* #elif defined other platforms ... */ +#endif + +#if defined PATH_MAX +# define LT_PATHMAX PATH_MAX +#elif defined MAXPATHLEN +# define LT_PATHMAX MAXPATHLEN +#else +# define LT_PATHMAX 1024 +#endif + +#ifndef S_IXOTH +# define S_IXOTH 0 +#endif +#ifndef S_IXGRP +# define S_IXGRP 0 +#endif + +/* path handling portability macros */ +#ifndef DIR_SEPARATOR +# define DIR_SEPARATOR '/' +# define PATH_SEPARATOR ':' +#endif + +#if defined _WIN32 || defined __MSDOS__ || defined __DJGPP__ || \ + defined __OS2__ +# define HAVE_DOS_BASED_FILE_SYSTEM +# define FOPEN_WB "wb" +# ifndef DIR_SEPARATOR_2 +# define DIR_SEPARATOR_2 '\\' +# endif +# ifndef PATH_SEPARATOR_2 +# define PATH_SEPARATOR_2 ';' +# endif +#endif + +#ifndef DIR_SEPARATOR_2 +# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR) +#else /* DIR_SEPARATOR_2 */ +# define IS_DIR_SEPARATOR(ch) \ + (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2)) +#endif /* DIR_SEPARATOR_2 */ + +#ifndef PATH_SEPARATOR_2 +# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR) +#else /* PATH_SEPARATOR_2 */ +# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR_2) +#endif /* PATH_SEPARATOR_2 */ + +#ifndef FOPEN_WB +# define FOPEN_WB "w" +#endif +#ifndef _O_BINARY +# define _O_BINARY 0 +#endif + +#define XMALLOC(type, num) ((type *) xmalloc ((num) * sizeof(type))) +#define XFREE(stale) do { \ + if (stale) { free (stale); stale = 0; } \ +} while (0) + +#if defined LT_DEBUGWRAPPER +static int lt_debug = 1; +#else +static int lt_debug = 0; +#endif + +const char *program_name = "libtool-wrapper"; /* in case xstrdup fails */ + +void *xmalloc (size_t num); +char *xstrdup (const char *string); +const char *base_name (const char *name); +char *find_executable (const char *wrapper); +char *chase_symlinks (const char *pathspec); +int make_executable (const char *path); +int check_executable (const char *path); +char *strendzap (char *str, const char *pat); +void lt_debugprintf (const char *file, int line, const char *fmt, ...); +void lt_fatal (const char *file, int line, const char *message, ...); +static const char *nonnull (const char *s); +static const char *nonempty (const char *s); +void lt_setenv (const char *name, const char *value); +char *lt_extend_str (const char *orig_value, const char *add, int to_end); +void lt_update_exe_path (const char *name, const char *value); +void lt_update_lib_path (const char *name, const char *value); +char **prepare_spawn (char **argv); +void lt_dump_script (FILE *f); +EOF + + cat <= 0) + && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))) + return 1; + else + return 0; +} + +int +make_executable (const char *path) +{ + int rval = 0; + struct stat st; + + lt_debugprintf (__FILE__, __LINE__, "(make_executable): %s\n", + nonempty (path)); + if ((!path) || (!*path)) + return 0; + + if (stat (path, &st) >= 0) + { + rval = chmod (path, st.st_mode | S_IXOTH | S_IXGRP | S_IXUSR); + } + return rval; +} + +/* Searches for the full path of the wrapper. Returns + newly allocated full path name if found, NULL otherwise + Does not chase symlinks, even on platforms that support them. +*/ +char * +find_executable (const char *wrapper) +{ + int has_slash = 0; + const char *p; + const char *p_next; + /* static buffer for getcwd */ + char tmp[LT_PATHMAX + 1]; + size_t tmp_len; + char *concat_name; + + lt_debugprintf (__FILE__, __LINE__, "(find_executable): %s\n", + nonempty (wrapper)); + + if ((wrapper == NULL) || (*wrapper == '\0')) + return NULL; + + /* Absolute path? */ +#if defined HAVE_DOS_BASED_FILE_SYSTEM + if (isalpha ((unsigned char) wrapper[0]) && wrapper[1] == ':') + { + concat_name = xstrdup (wrapper); + if (check_executable (concat_name)) + return concat_name; + XFREE (concat_name); + } + else + { +#endif + if (IS_DIR_SEPARATOR (wrapper[0])) + { + concat_name = xstrdup (wrapper); + if (check_executable (concat_name)) + return concat_name; + XFREE (concat_name); + } +#if defined HAVE_DOS_BASED_FILE_SYSTEM + } +#endif + + for (p = wrapper; *p; p++) + if (*p == '/') + { + has_slash = 1; + break; + } + if (!has_slash) + { + /* no slashes; search PATH */ + const char *path = getenv ("PATH"); + if (path != NULL) + { + for (p = path; *p; p = p_next) + { + const char *q; + size_t p_len; + for (q = p; *q; q++) + if (IS_PATH_SEPARATOR (*q)) + break; + p_len = (size_t) (q - p); + p_next = (*q == '\0' ? q : q + 1); + if (p_len == 0) + { + /* empty path: current directory */ + if (getcwd (tmp, LT_PATHMAX) == NULL) + lt_fatal (__FILE__, __LINE__, "getcwd failed: %s", + nonnull (strerror (errno))); + tmp_len = strlen (tmp); + concat_name = + XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1); + memcpy (concat_name, tmp, tmp_len); + concat_name[tmp_len] = '/'; + strcpy (concat_name + tmp_len + 1, wrapper); + } + else + { + concat_name = + XMALLOC (char, p_len + 1 + strlen (wrapper) + 1); + memcpy (concat_name, p, p_len); + concat_name[p_len] = '/'; + strcpy (concat_name + p_len + 1, wrapper); + } + if (check_executable (concat_name)) + return concat_name; + XFREE (concat_name); + } + } + /* not found in PATH; assume curdir */ + } + /* Relative path | not found in path: prepend cwd */ + if (getcwd (tmp, LT_PATHMAX) == NULL) + lt_fatal (__FILE__, __LINE__, "getcwd failed: %s", + nonnull (strerror (errno))); + tmp_len = strlen (tmp); + concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1); + memcpy (concat_name, tmp, tmp_len); + concat_name[tmp_len] = '/'; + strcpy (concat_name + tmp_len + 1, wrapper); + + if (check_executable (concat_name)) + return concat_name; + XFREE (concat_name); + return NULL; +} + +char * +chase_symlinks (const char *pathspec) +{ +#ifndef S_ISLNK + return xstrdup (pathspec); +#else + char buf[LT_PATHMAX]; + struct stat s; + char *tmp_pathspec = xstrdup (pathspec); + char *p; + int has_symlinks = 0; + while (strlen (tmp_pathspec) && !has_symlinks) + { + lt_debugprintf (__FILE__, __LINE__, + "checking path component for symlinks: %s\n", + tmp_pathspec); + if (lstat (tmp_pathspec, &s) == 0) + { + if (S_ISLNK (s.st_mode) != 0) + { + has_symlinks = 1; + break; + } + + /* search backwards for last DIR_SEPARATOR */ + p = tmp_pathspec + strlen (tmp_pathspec) - 1; + while ((p > tmp_pathspec) && (!IS_DIR_SEPARATOR (*p))) + p--; + if ((p == tmp_pathspec) && (!IS_DIR_SEPARATOR (*p))) + { + /* no more DIR_SEPARATORS left */ + break; + } + *p = '\0'; + } + else + { + lt_fatal (__FILE__, __LINE__, + "error accessing file \"%s\": %s", + tmp_pathspec, nonnull (strerror (errno))); + } + } + XFREE (tmp_pathspec); + + if (!has_symlinks) + { + return xstrdup (pathspec); + } + + tmp_pathspec = realpath (pathspec, buf); + if (tmp_pathspec == 0) + { + lt_fatal (__FILE__, __LINE__, + "could not follow symlinks for %s", pathspec); + } + return xstrdup (tmp_pathspec); +#endif +} + +char * +strendzap (char *str, const char *pat) +{ + size_t len, patlen; + + assert (str != NULL); + assert (pat != NULL); + + len = strlen (str); + patlen = strlen (pat); + + if (patlen <= len) + { + str += len - patlen; + if (STREQ (str, pat)) + *str = '\0'; + } + return str; +} + +void +lt_debugprintf (const char *file, int line, const char *fmt, ...) +{ + va_list args; + if (lt_debug) + { + (void) fprintf (stderr, "%s:%s:%d: ", program_name, file, line); + va_start (args, fmt); + (void) vfprintf (stderr, fmt, args); + va_end (args); + } +} + +static void +lt_error_core (int exit_status, const char *file, + int line, const char *mode, + const char *message, va_list ap) +{ + fprintf (stderr, "%s:%s:%d: %s: ", program_name, file, line, mode); + vfprintf (stderr, message, ap); + fprintf (stderr, ".\n"); + + if (exit_status >= 0) + exit (exit_status); +} + +void +lt_fatal (const char *file, int line, const char *message, ...) +{ + va_list ap; + va_start (ap, message); + lt_error_core (EXIT_FAILURE, file, line, "FATAL", message, ap); + va_end (ap); +} + +static const char * +nonnull (const char *s) +{ + return s ? s : "(null)"; +} + +static const char * +nonempty (const char *s) +{ + return (s && !*s) ? "(empty)" : nonnull (s); +} + +void +lt_setenv (const char *name, const char *value) +{ + lt_debugprintf (__FILE__, __LINE__, + "(lt_setenv) setting '%s' to '%s'\n", + nonnull (name), nonnull (value)); + { +#ifdef HAVE_SETENV + /* always make a copy, for consistency with !HAVE_SETENV */ + char *str = xstrdup (value); + setenv (name, str, 1); +#else + size_t len = strlen (name) + 1 + strlen (value) + 1; + char *str = XMALLOC (char, len); + sprintf (str, "%s=%s", name, value); + if (putenv (str) != EXIT_SUCCESS) + { + XFREE (str); + } +#endif + } +} + +char * +lt_extend_str (const char *orig_value, const char *add, int to_end) +{ + char *new_value; + if (orig_value && *orig_value) + { + size_t orig_value_len = strlen (orig_value); + size_t add_len = strlen (add); + new_value = XMALLOC (char, add_len + orig_value_len + 1); + if (to_end) + { + strcpy (new_value, orig_value); + strcpy (new_value + orig_value_len, add); + } + else + { + strcpy (new_value, add); + strcpy (new_value + add_len, orig_value); + } + } + else + { + new_value = xstrdup (add); + } + return new_value; +} + +void +lt_update_exe_path (const char *name, const char *value) +{ + lt_debugprintf (__FILE__, __LINE__, + "(lt_update_exe_path) modifying '%s' by prepending '%s'\n", + nonnull (name), nonnull (value)); + + if (name && *name && value && *value) + { + char *new_value = lt_extend_str (getenv (name), value, 0); + /* some systems can't cope with a ':'-terminated path #' */ + size_t len = strlen (new_value); + while ((len > 0) && IS_PATH_SEPARATOR (new_value[len-1])) + { + new_value[--len] = '\0'; + } + lt_setenv (name, new_value); + XFREE (new_value); + } +} + +void +lt_update_lib_path (const char *name, const char *value) +{ + lt_debugprintf (__FILE__, __LINE__, + "(lt_update_lib_path) modifying '%s' by prepending '%s'\n", + nonnull (name), nonnull (value)); + + if (name && *name && value && *value) + { + char *new_value = lt_extend_str (getenv (name), value, 0); + lt_setenv (name, new_value); + XFREE (new_value); + } +} + +EOF + case $host_os in + mingw*) + cat <<"EOF" + +/* Prepares an argument vector before calling spawn(). + Note that spawn() does not by itself call the command interpreter + (getenv ("COMSPEC") != NULL ? getenv ("COMSPEC") : + ({ OSVERSIONINFO v; v.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); + GetVersionEx(&v); + v.dwPlatformId == VER_PLATFORM_WIN32_NT; + }) ? "cmd.exe" : "command.com"). + Instead it simply concatenates the arguments, separated by ' ', and calls + CreateProcess(). We must quote the arguments since Win32 CreateProcess() + interprets characters like ' ', '\t', '\\', '"' (but not '<' and '>') in a + special way: + - Space and tab are interpreted as delimiters. They are not treated as + delimiters if they are surrounded by double quotes: "...". + - Unescaped double quotes are removed from the input. Their only effect is + that within double quotes, space and tab are treated like normal + characters. + - Backslashes not followed by double quotes are not special. + - But 2*n+1 backslashes followed by a double quote become + n backslashes followed by a double quote (n >= 0): + \" -> " + \\\" -> \" + \\\\\" -> \\" + */ +#define SHELL_SPECIAL_CHARS "\"\\ \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037" +#define SHELL_SPACE_CHARS " \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037" +char ** +prepare_spawn (char **argv) +{ + size_t argc; + char **new_argv; + size_t i; + + /* Count number of arguments. */ + for (argc = 0; argv[argc] != NULL; argc++) + ; + + /* Allocate new argument vector. */ + new_argv = XMALLOC (char *, argc + 1); + + /* Put quoted arguments into the new argument vector. */ + for (i = 0; i < argc; i++) + { + const char *string = argv[i]; + + if (string[0] == '\0') + new_argv[i] = xstrdup ("\"\""); + else if (strpbrk (string, SHELL_SPECIAL_CHARS) != NULL) + { + int quote_around = (strpbrk (string, SHELL_SPACE_CHARS) != NULL); + size_t length; + unsigned int backslashes; + const char *s; + char *quoted_string; + char *p; + + length = 0; + backslashes = 0; + if (quote_around) + length++; + for (s = string; *s != '\0'; s++) + { + char c = *s; + if (c == '"') + length += backslashes + 1; + length++; + if (c == '\\') + backslashes++; + else + backslashes = 0; + } + if (quote_around) + length += backslashes + 1; + + quoted_string = XMALLOC (char, length + 1); + + p = quoted_string; + backslashes = 0; + if (quote_around) + *p++ = '"'; + for (s = string; *s != '\0'; s++) + { + char c = *s; + if (c == '"') + { + unsigned int j; + for (j = backslashes + 1; j > 0; j--) + *p++ = '\\'; + } + *p++ = c; + if (c == '\\') + backslashes++; + else + backslashes = 0; + } + if (quote_around) + { + unsigned int j; + for (j = backslashes; j > 0; j--) + *p++ = '\\'; + *p++ = '"'; + } + *p = '\0'; + + new_argv[i] = quoted_string; + } + else + new_argv[i] = (char *) string; + } + new_argv[argc] = NULL; + + return new_argv; +} +EOF + ;; + esac + + cat <<"EOF" +void lt_dump_script (FILE* f) +{ +EOF + func_emit_wrapper yes | + $SED -n -e ' +s/^\(.\{79\}\)\(..*\)/\1\ +\2/ +h +s/\([\\"]\)/\\\1/g +s/$/\\n/ +s/\([^\n]*\).*/ fputs ("\1", f);/p +g +D' + cat <<"EOF" +} +EOF +} +# end: func_emit_cwrapperexe_src + +# func_win32_import_lib_p ARG +# True if ARG is an import lib, as indicated by $file_magic_cmd +func_win32_import_lib_p () +{ + $debug_cmd + + case `eval $file_magic_cmd \"\$1\" 2>/dev/null | $SED -e 10q` in + *import*) : ;; + *) false ;; + esac +} + +# func_suncc_cstd_abi +# !!ONLY CALL THIS FOR SUN CC AFTER $compile_command IS FULLY EXPANDED!! +# Several compiler flags select an ABI that is incompatible with the +# Cstd library. Avoid specifying it if any are in CXXFLAGS. +func_suncc_cstd_abi () +{ + $debug_cmd + + case " $compile_command " in + *" -compat=g "*|*\ -std=c++[0-9][0-9]\ *|*" -library=stdcxx4 "*|*" -library=stlport4 "*) + suncc_use_cstd_abi=no + ;; + *) + suncc_use_cstd_abi=yes + ;; + esac +} + +# func_mode_link arg... +func_mode_link () +{ + $debug_cmd + + case $host in + *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) + # It is impossible to link a dll without this setting, and + # we shouldn't force the makefile maintainer to figure out + # what system we are compiling for in order to pass an extra + # flag for every libtool invocation. + # allow_undefined=no + + # FIXME: Unfortunately, there are problems with the above when trying + # to make a dll that has undefined symbols, in which case not + # even a static library is built. For now, we need to specify + # -no-undefined on the libtool link line when we can be certain + # that all symbols are satisfied, otherwise we get a static library. + allow_undefined=yes + ;; + *) + allow_undefined=yes + ;; + esac + libtool_args=$nonopt + base_compile="$nonopt $@" + compile_command=$nonopt + finalize_command=$nonopt + + compile_rpath= + finalize_rpath= + compile_shlibpath= + finalize_shlibpath= + convenience= + old_convenience= + deplibs= + old_deplibs= + compiler_flags= + linker_flags= + dllsearchpath= + lib_search_path=`pwd` + inst_prefix_dir= + new_inherited_linker_flags= + + avoid_version=no + bindir= + dlfiles= + dlprefiles= + dlself=no + export_dynamic=no + export_symbols= + export_symbols_regex= + generated= + libobjs= + ltlibs= + module=no + no_install=no + objs= + os2dllname= + non_pic_objects= + precious_files_regex= + prefer_static_libs=no + preload=false + prev= + prevarg= + release= + rpath= + xrpath= + perm_rpath= + temp_rpath= + thread_safe=no + vinfo= + vinfo_number=no + weak_libs= + single_module=$wl-single_module + func_infer_tag $base_compile + + # We need to know -static, to get the right output filenames. + for arg + do + case $arg in + -shared) + test yes != "$build_libtool_libs" \ + && func_fatal_configuration "cannot build a shared library" + build_old_libs=no + break + ;; + -all-static | -static | -static-libtool-libs) + case $arg in + -all-static) + if test yes = "$build_libtool_libs" && test -z "$link_static_flag"; then + func_warning "complete static linking is impossible in this configuration" + fi + if test -n "$link_static_flag"; then + dlopen_self=$dlopen_self_static + fi + prefer_static_libs=yes + ;; + -static) + if test -z "$pic_flag" && test -n "$link_static_flag"; then + dlopen_self=$dlopen_self_static + fi + prefer_static_libs=built + ;; + -static-libtool-libs) + if test -z "$pic_flag" && test -n "$link_static_flag"; then + dlopen_self=$dlopen_self_static + fi + prefer_static_libs=yes + ;; + esac + build_libtool_libs=no + build_old_libs=yes + break + ;; + esac + done + + # See if our shared archives depend on static archives. + test -n "$old_archive_from_new_cmds" && build_old_libs=yes + + # Go through the arguments, transforming them on the way. + while test "$#" -gt 0; do + arg=$1 + shift + func_quote_for_eval "$arg" + qarg=$func_quote_for_eval_unquoted_result + func_append libtool_args " $func_quote_for_eval_result" + + # If the previous option needs an argument, assign it. + if test -n "$prev"; then + case $prev in + output) + func_append compile_command " @OUTPUT@" + func_append finalize_command " @OUTPUT@" + ;; + esac + + case $prev in + bindir) + bindir=$arg + prev= + continue + ;; + dlfiles|dlprefiles) + $preload || { + # Add the symbol object into the linking commands. + func_append compile_command " @SYMFILE@" + func_append finalize_command " @SYMFILE@" + preload=: + } + case $arg in + *.la | *.lo) ;; # We handle these cases below. + force) + if test no = "$dlself"; then + dlself=needless + export_dynamic=yes + fi + prev= + continue + ;; + self) + if test dlprefiles = "$prev"; then + dlself=yes + elif test dlfiles = "$prev" && test yes != "$dlopen_self"; then + dlself=yes + else + dlself=needless + export_dynamic=yes + fi + prev= + continue + ;; + *) + if test dlfiles = "$prev"; then + func_append dlfiles " $arg" + else + func_append dlprefiles " $arg" + fi + prev= + continue + ;; + esac + ;; + expsyms) + export_symbols=$arg + test -f "$arg" \ + || func_fatal_error "symbol file '$arg' does not exist" + prev= + continue + ;; + expsyms_regex) + export_symbols_regex=$arg + prev= + continue + ;; + framework) + case $host in + *-*-darwin*) + case "$deplibs " in + *" $qarg.ltframework "*) ;; + *) func_append deplibs " $qarg.ltframework" # this is fixed later + ;; + esac + ;; + esac + prev= + continue + ;; + inst_prefix) + inst_prefix_dir=$arg + prev= + continue + ;; + mllvm) + # Clang does not use LLVM to link, so we can simply discard any + # '-mllvm $arg' options when doing the link step. + prev= + continue + ;; + objectlist) + if test -f "$arg"; then + save_arg=$arg + moreargs= + for fil in `cat "$save_arg"` + do +# func_append moreargs " $fil" + arg=$fil + # A libtool-controlled object. + + # Check to see that this really is a libtool object. + if func_lalib_unsafe_p "$arg"; then + pic_object= + non_pic_object= + + # Read the .lo file + func_source "$arg" + + if test -z "$pic_object" || + test -z "$non_pic_object" || + test none = "$pic_object" && + test none = "$non_pic_object"; then + func_fatal_error "cannot find name of object for '$arg'" + fi + + # Extract subdirectory from the argument. + func_dirname "$arg" "/" "" + xdir=$func_dirname_result + + if test none != "$pic_object"; then + # Prepend the subdirectory the object is found in. + pic_object=$xdir$pic_object + + if test dlfiles = "$prev"; then + if test yes = "$build_libtool_libs" && test yes = "$dlopen_support"; then + func_append dlfiles " $pic_object" + prev= + continue + else + # If libtool objects are unsupported, then we need to preload. + prev=dlprefiles + fi + fi + + # CHECK ME: I think I busted this. -Ossama + if test dlprefiles = "$prev"; then + # Preload the old-style object. + func_append dlprefiles " $pic_object" + prev= + fi + + # A PIC object. + func_append libobjs " $pic_object" + arg=$pic_object + fi + + # Non-PIC object. + if test none != "$non_pic_object"; then + # Prepend the subdirectory the object is found in. + non_pic_object=$xdir$non_pic_object + + # A standard non-PIC object + func_append non_pic_objects " $non_pic_object" + if test -z "$pic_object" || test none = "$pic_object"; then + arg=$non_pic_object + fi + else + # If the PIC object exists, use it instead. + # $xdir was prepended to $pic_object above. + non_pic_object=$pic_object + func_append non_pic_objects " $non_pic_object" + fi + else + # Only an error if not doing a dry-run. + if $opt_dry_run; then + # Extract subdirectory from the argument. + func_dirname "$arg" "/" "" + xdir=$func_dirname_result + + func_lo2o "$arg" + pic_object=$xdir$objdir/$func_lo2o_result + non_pic_object=$xdir$func_lo2o_result + func_append libobjs " $pic_object" + func_append non_pic_objects " $non_pic_object" + else + func_fatal_error "'$arg' is not a valid libtool object" + fi + fi + done + else + func_fatal_error "link input file '$arg' does not exist" + fi + arg=$save_arg + prev= + continue + ;; + os2dllname) + os2dllname=$arg + prev= + continue + ;; + precious_regex) + precious_files_regex=$arg + prev= + continue + ;; + release) + release=-$arg + prev= + continue + ;; + rpath | xrpath) + # We need an absolute path. + case $arg in + [\\/]* | [A-Za-z]:[\\/]*) ;; + *) + func_fatal_error "only absolute run-paths are allowed" + ;; + esac + if test rpath = "$prev"; then + case "$rpath " in + *" $arg "*) ;; + *) func_append rpath " $arg" ;; + esac + else + case "$xrpath " in + *" $arg "*) ;; + *) func_append xrpath " $arg" ;; + esac + fi + prev= + continue + ;; + shrext) + shrext_cmds=$arg + prev= + continue + ;; + weak) + func_append weak_libs " $arg" + prev= + continue + ;; + xcclinker) + func_append linker_flags " $qarg" + func_append compiler_flags " $qarg" + prev= + func_append compile_command " $qarg" + func_append finalize_command " $qarg" + continue + ;; + xcompiler) + func_append compiler_flags " $qarg" + prev= + func_append compile_command " $qarg" + func_append finalize_command " $qarg" + continue + ;; + xlinker) + func_append linker_flags " $qarg" + func_append compiler_flags " $wl$qarg" + prev= + func_append compile_command " $wl$qarg" + func_append finalize_command " $wl$qarg" + continue + ;; + *) + eval "$prev=\"\$arg\"" + prev= + continue + ;; + esac + fi # test -n "$prev" + + prevarg=$arg + + case $arg in + -all-static) + if test -n "$link_static_flag"; then + # See comment for -static flag below, for more details. + func_append compile_command " $link_static_flag" + func_append finalize_command " $link_static_flag" + fi + continue + ;; + + -allow-undefined) + # FIXME: remove this flag sometime in the future. + func_fatal_error "'-allow-undefined' must not be used because it is the default" + ;; + + -avoid-version) + avoid_version=yes + continue + ;; + + -bindir) + prev=bindir + continue + ;; + + -dlopen) + prev=dlfiles + continue + ;; + + -dlpreopen) + prev=dlprefiles + continue + ;; + + -export-dynamic) + export_dynamic=yes + continue + ;; + + -export-symbols | -export-symbols-regex) + if test -n "$export_symbols" || test -n "$export_symbols_regex"; then + func_fatal_error "more than one -exported-symbols argument is not allowed" + fi + if test X-export-symbols = "X$arg"; then + prev=expsyms + else + prev=expsyms_regex + fi + continue + ;; + + -framework) + prev=framework + continue + ;; + + -inst-prefix-dir) + prev=inst_prefix + continue + ;; + + # The native IRIX linker understands -LANG:*, -LIST:* and -LNO:* + # so, if we see these flags be careful not to treat them like -L + -L[A-Z][A-Z]*:*) + case $with_gcc/$host in + no/*-*-irix* | /*-*-irix*) + func_append compile_command " $arg" + func_append finalize_command " $arg" + ;; + esac + continue + ;; + + -L*) + func_stripname "-L" '' "$arg" + if test -z "$func_stripname_result"; then + if test "$#" -gt 0; then + func_fatal_error "require no space between '-L' and '$1'" + else + func_fatal_error "need path for '-L' option" + fi + fi + func_resolve_sysroot "$func_stripname_result" + dir=$func_resolve_sysroot_result + # We need an absolute path. + case $dir in + [\\/]* | [A-Za-z]:[\\/]*) ;; + *) + absdir=`cd "$dir" && pwd` + test -z "$absdir" && \ + func_fatal_error "cannot determine absolute directory name of '$dir'" + dir=$absdir + ;; + esac + case "$deplibs " in + *" -L$dir "* | *" $arg "*) + # Will only happen for absolute or sysroot arguments + ;; + *) + # Preserve sysroot, but never include relative directories + case $dir in + [\\/]* | [A-Za-z]:[\\/]* | =*) func_append deplibs " $arg" ;; + *) func_append deplibs " -L$dir" ;; + esac + func_append lib_search_path " $dir" + ;; + esac + case $host in + *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) + testbindir=`$ECHO "$dir" | $SED 's*/lib$*/bin*'` + case :$dllsearchpath: in + *":$dir:"*) ;; + ::) dllsearchpath=$dir;; + *) func_append dllsearchpath ":$dir";; + esac + case :$dllsearchpath: in + *":$testbindir:"*) ;; + ::) dllsearchpath=$testbindir;; + *) func_append dllsearchpath ":$testbindir";; + esac + ;; + esac + continue + ;; + + -l*) + if test X-lc = "X$arg" || test X-lm = "X$arg"; then + case $host in + *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-beos* | *-cegcc* | *-*-haiku*) + # These systems don't actually have a C or math library (as such) + continue + ;; + *-*-os2*) + # These systems don't actually have a C library (as such) + test X-lc = "X$arg" && continue + ;; + *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig*) + # Do not include libc due to us having libc/libc_r. + test X-lc = "X$arg" && continue + ;; + *-*-rhapsody* | *-*-darwin1.[012]) + # Rhapsody C and math libraries are in the System framework + func_append deplibs " System.ltframework" + continue + ;; + *-*-sco3.2v5* | *-*-sco5v6*) + # Causes problems with __ctype + test X-lc = "X$arg" && continue + ;; + *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*) + # Compiler inserts libc in the correct place for threads to work + test X-lc = "X$arg" && continue + ;; + esac + elif test X-lc_r = "X$arg"; then + case $host in + *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig*) + # Do not include libc_r directly, use -pthread flag. + continue + ;; + esac + fi + func_append deplibs " $arg" + continue + ;; + + -mllvm) + prev=mllvm + continue + ;; + + -module) + module=yes + continue + ;; + + # Tru64 UNIX uses -model [arg] to determine the layout of C++ + # classes, name mangling, and exception handling. + # Darwin uses the -arch flag to determine output architecture. + -model|-arch|-isysroot|--sysroot) + func_append compiler_flags " $arg" + func_append compile_command " $arg" + func_append finalize_command " $arg" + prev=xcompiler + continue + ;; + + -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \ + |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*) + func_append compiler_flags " $arg" + func_append compile_command " $arg" + func_append finalize_command " $arg" + case "$new_inherited_linker_flags " in + *" $arg "*) ;; + * ) func_append new_inherited_linker_flags " $arg" ;; + esac + continue + ;; + + -multi_module) + single_module=$wl-multi_module + continue + ;; + + -no-fast-install) + fast_install=no + continue + ;; + + -no-install) + case $host in + *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*) + # The PATH hackery in wrapper scripts is required on Windows + # and Darwin in order for the loader to find any dlls it needs. + func_warning "'-no-install' is ignored for $host" + func_warning "assuming '-no-fast-install' instead" + fast_install=no + ;; + *) no_install=yes ;; + esac + continue + ;; + + -no-undefined) + allow_undefined=no + continue + ;; + + -objectlist) + prev=objectlist + continue + ;; + + -os2dllname) + prev=os2dllname + continue + ;; + + -o) prev=output ;; + + -precious-files-regex) + prev=precious_regex + continue + ;; + + -release) + prev=release + continue + ;; + + -rpath) + prev=rpath + continue + ;; + + -R) + prev=xrpath + continue + ;; + + -R*) + func_stripname '-R' '' "$arg" + dir=$func_stripname_result + # We need an absolute path. + case $dir in + [\\/]* | [A-Za-z]:[\\/]*) ;; + =*) + func_stripname '=' '' "$dir" + dir=$lt_sysroot$func_stripname_result + ;; + *) + func_fatal_error "only absolute run-paths are allowed" + ;; + esac + case "$xrpath " in + *" $dir "*) ;; + *) func_append xrpath " $dir" ;; + esac + continue + ;; + + -shared) + # The effects of -shared are defined in a previous loop. + continue + ;; + + -shrext) + prev=shrext + continue + ;; + + -static | -static-libtool-libs) + # The effects of -static are defined in a previous loop. + # We used to do the same as -all-static on platforms that + # didn't have a PIC flag, but the assumption that the effects + # would be equivalent was wrong. It would break on at least + # Digital Unix and AIX. + continue + ;; + + -thread-safe) + thread_safe=yes + continue + ;; + + -version-info) + prev=vinfo + continue + ;; + + -version-number) + prev=vinfo + vinfo_number=yes + continue + ;; + + -weak) + prev=weak + continue + ;; + + -Wc,*) + func_stripname '-Wc,' '' "$arg" + args=$func_stripname_result + arg= + save_ifs=$IFS; IFS=, + for flag in $args; do + IFS=$save_ifs + func_quote_for_eval "$flag" + func_append arg " $func_quote_for_eval_result" + func_append compiler_flags " $func_quote_for_eval_result" + done + IFS=$save_ifs + func_stripname ' ' '' "$arg" + arg=$func_stripname_result + ;; + + -Wl,*) + func_stripname '-Wl,' '' "$arg" + args=$func_stripname_result + arg= + save_ifs=$IFS; IFS=, + for flag in $args; do + IFS=$save_ifs + func_quote_for_eval "$flag" + func_append arg " $wl$func_quote_for_eval_result" + func_append compiler_flags " $wl$func_quote_for_eval_result" + func_append linker_flags " $func_quote_for_eval_result" + done + IFS=$save_ifs + func_stripname ' ' '' "$arg" + arg=$func_stripname_result + ;; + + -Xcompiler) + prev=xcompiler + continue + ;; + + -Xlinker) + prev=xlinker + continue + ;; + + -XCClinker) + prev=xcclinker + continue + ;; + + # -msg_* for osf cc + -msg_*) + func_quote_for_eval "$arg" + arg=$func_quote_for_eval_result + ;; + + # Flags to be passed through unchanged, with rationale: + # -64, -mips[0-9] enable 64-bit mode for the SGI compiler + # -r[0-9][0-9]* specify processor for the SGI compiler + # -xarch=*, -xtarget=* enable 64-bit mode for the Sun compiler + # +DA*, +DD* enable 64-bit mode for the HP compiler + # -q* compiler args for the IBM compiler + # -m*, -t[45]*, -txscale* architecture-specific flags for GCC + # -F/path path to uninstalled frameworks, gcc on darwin + # -p, -pg, --coverage, -fprofile-* profiling flags for GCC + # -fstack-protector* stack protector flags for GCC + # @file GCC response files + # -tp=* Portland pgcc target processor selection + # --sysroot=* for sysroot support + # -O*, -g*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization + # -stdlib=* select c++ std lib with clang + -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \ + -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \ + -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*) + func_quote_for_eval "$arg" + arg=$func_quote_for_eval_result + func_append compile_command " $arg" + func_append finalize_command " $arg" + func_append compiler_flags " $arg" + continue + ;; + + -Z*) + if test os2 = "`expr $host : '.*\(os2\)'`"; then + # OS/2 uses -Zxxx to specify OS/2-specific options + compiler_flags="$compiler_flags $arg" + func_append compile_command " $arg" + func_append finalize_command " $arg" + case $arg in + -Zlinker | -Zstack) + prev=xcompiler + ;; + esac + continue + else + # Otherwise treat like 'Some other compiler flag' below + func_quote_for_eval "$arg" + arg=$func_quote_for_eval_result + fi + ;; + + # Some other compiler flag. + -* | +*) + func_quote_for_eval "$arg" + arg=$func_quote_for_eval_result + ;; + + *.$objext) + # A standard object. + func_append objs " $arg" + ;; + + *.lo) + # A libtool-controlled object. + + # Check to see that this really is a libtool object. + if func_lalib_unsafe_p "$arg"; then + pic_object= + non_pic_object= + + # Read the .lo file + func_source "$arg" + + if test -z "$pic_object" || + test -z "$non_pic_object" || + test none = "$pic_object" && + test none = "$non_pic_object"; then + func_fatal_error "cannot find name of object for '$arg'" + fi + + # Extract subdirectory from the argument. + func_dirname "$arg" "/" "" + xdir=$func_dirname_result + + test none = "$pic_object" || { + # Prepend the subdirectory the object is found in. + pic_object=$xdir$pic_object + + if test dlfiles = "$prev"; then + if test yes = "$build_libtool_libs" && test yes = "$dlopen_support"; then + func_append dlfiles " $pic_object" + prev= + continue + else + # If libtool objects are unsupported, then we need to preload. + prev=dlprefiles + fi + fi + + # CHECK ME: I think I busted this. -Ossama + if test dlprefiles = "$prev"; then + # Preload the old-style object. + func_append dlprefiles " $pic_object" + prev= + fi + + # A PIC object. + func_append libobjs " $pic_object" + arg=$pic_object + } + + # Non-PIC object. + if test none != "$non_pic_object"; then + # Prepend the subdirectory the object is found in. + non_pic_object=$xdir$non_pic_object + + # A standard non-PIC object + func_append non_pic_objects " $non_pic_object" + if test -z "$pic_object" || test none = "$pic_object"; then + arg=$non_pic_object + fi + else + # If the PIC object exists, use it instead. + # $xdir was prepended to $pic_object above. + non_pic_object=$pic_object + func_append non_pic_objects " $non_pic_object" + fi + else + # Only an error if not doing a dry-run. + if $opt_dry_run; then + # Extract subdirectory from the argument. + func_dirname "$arg" "/" "" + xdir=$func_dirname_result + + func_lo2o "$arg" + pic_object=$xdir$objdir/$func_lo2o_result + non_pic_object=$xdir$func_lo2o_result + func_append libobjs " $pic_object" + func_append non_pic_objects " $non_pic_object" + else + func_fatal_error "'$arg' is not a valid libtool object" + fi + fi + ;; + + *.$libext) + # An archive. + func_append deplibs " $arg" + func_append old_deplibs " $arg" + continue + ;; + + *.la) + # A libtool-controlled library. + + func_resolve_sysroot "$arg" + if test dlfiles = "$prev"; then + # This library was specified with -dlopen. + func_append dlfiles " $func_resolve_sysroot_result" + prev= + elif test dlprefiles = "$prev"; then + # The library was specified with -dlpreopen. + func_append dlprefiles " $func_resolve_sysroot_result" + prev= + else + func_append deplibs " $func_resolve_sysroot_result" + fi + continue + ;; + + # Some other compiler argument. + *) + # Unknown arguments in both finalize_command and compile_command need + # to be aesthetically quoted because they are evaled later. + func_quote_for_eval "$arg" + arg=$func_quote_for_eval_result + ;; + esac # arg + + # Now actually substitute the argument into the commands. + if test -n "$arg"; then + func_append compile_command " $arg" + func_append finalize_command " $arg" + fi + done # argument parsing loop + + test -n "$prev" && \ + func_fatal_help "the '$prevarg' option requires an argument" + + if test yes = "$export_dynamic" && test -n "$export_dynamic_flag_spec"; then + eval arg=\"$export_dynamic_flag_spec\" + func_append compile_command " $arg" + func_append finalize_command " $arg" + fi + + oldlibs= + # calculate the name of the file, without its directory + func_basename "$output" + outputname=$func_basename_result + libobjs_save=$libobjs + + if test -n "$shlibpath_var"; then + # get the directories listed in $shlibpath_var + eval shlib_search_path=\`\$ECHO \"\$$shlibpath_var\" \| \$SED \'s/:/ /g\'\` + else + shlib_search_path= + fi + eval sys_lib_search_path=\"$sys_lib_search_path_spec\" + eval sys_lib_dlsearch_path=\"$sys_lib_dlsearch_path_spec\" + + # Definition is injected by LT_CONFIG during libtool generation. + func_munge_path_list sys_lib_dlsearch_path "$LT_SYS_LIBRARY_PATH" + + func_dirname "$output" "/" "" + output_objdir=$func_dirname_result$objdir + func_to_tool_file "$output_objdir/" + tool_output_objdir=$func_to_tool_file_result + # Create the object directory. + func_mkdir_p "$output_objdir" + + # Determine the type of output + case $output in + "") + func_fatal_help "you must specify an output file" + ;; + *.$libext) linkmode=oldlib ;; + *.lo | *.$objext) linkmode=obj ;; + *.la) linkmode=lib ;; + *) linkmode=prog ;; # Anything else should be a program. + esac + + specialdeplibs= + + libs= + # Find all interdependent deplibs by searching for libraries + # that are linked more than once (e.g. -la -lb -la) + for deplib in $deplibs; do + if $opt_preserve_dup_deps; then + case "$libs " in + *" $deplib "*) func_append specialdeplibs " $deplib" ;; + esac + fi + func_append libs " $deplib" + done + + if test lib = "$linkmode"; then + libs="$predeps $libs $compiler_lib_search_path $postdeps" + + # Compute libraries that are listed more than once in $predeps + # $postdeps and mark them as special (i.e., whose duplicates are + # not to be eliminated). + pre_post_deps= + if $opt_duplicate_compiler_generated_deps; then + for pre_post_dep in $predeps $postdeps; do + case "$pre_post_deps " in + *" $pre_post_dep "*) func_append specialdeplibs " $pre_post_deps" ;; + esac + func_append pre_post_deps " $pre_post_dep" + done + fi + pre_post_deps= + fi + + deplibs= + newdependency_libs= + newlib_search_path= + need_relink=no # whether we're linking any uninstalled libtool libraries + notinst_deplibs= # not-installed libtool libraries + notinst_path= # paths that contain not-installed libtool libraries + + case $linkmode in + lib) + passes="conv dlpreopen link" + for file in $dlfiles $dlprefiles; do + case $file in + *.la) ;; + *) + func_fatal_help "libraries can '-dlopen' only libtool libraries: $file" + ;; + esac + done + ;; + prog) + compile_deplibs= + finalize_deplibs= + alldeplibs=false + newdlfiles= + newdlprefiles= + passes="conv scan dlopen dlpreopen link" + ;; + *) passes="conv" + ;; + esac + + for pass in $passes; do + # The preopen pass in lib mode reverses $deplibs; put it back here + # so that -L comes before libs that need it for instance... + if test lib,link = "$linkmode,$pass"; then + ## FIXME: Find the place where the list is rebuilt in the wrong + ## order, and fix it there properly + tmp_deplibs= + for deplib in $deplibs; do + tmp_deplibs="$deplib $tmp_deplibs" + done + deplibs=$tmp_deplibs + fi + + if test lib,link = "$linkmode,$pass" || + test prog,scan = "$linkmode,$pass"; then + libs=$deplibs + deplibs= + fi + if test prog = "$linkmode"; then + case $pass in + dlopen) libs=$dlfiles ;; + dlpreopen) libs=$dlprefiles ;; + link) libs="$deplibs %DEPLIBS% $dependency_libs" ;; + esac + fi + if test lib,dlpreopen = "$linkmode,$pass"; then + # Collect and forward deplibs of preopened libtool libs + for lib in $dlprefiles; do + # Ignore non-libtool-libs + dependency_libs= + func_resolve_sysroot "$lib" + case $lib in + *.la) func_source "$func_resolve_sysroot_result" ;; + esac + + # Collect preopened libtool deplibs, except any this library + # has declared as weak libs + for deplib in $dependency_libs; do + func_basename "$deplib" + deplib_base=$func_basename_result + case " $weak_libs " in + *" $deplib_base "*) ;; + *) func_append deplibs " $deplib" ;; + esac + done + done + libs=$dlprefiles + fi + if test dlopen = "$pass"; then + # Collect dlpreopened libraries + save_deplibs=$deplibs + deplibs= + fi + + for deplib in $libs; do + lib= + found=false + case $deplib in + -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \ + |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*) + if test prog,link = "$linkmode,$pass"; then + compile_deplibs="$deplib $compile_deplibs" + finalize_deplibs="$deplib $finalize_deplibs" + else + func_append compiler_flags " $deplib" + if test lib = "$linkmode"; then + case "$new_inherited_linker_flags " in + *" $deplib "*) ;; + * ) func_append new_inherited_linker_flags " $deplib" ;; + esac + fi + fi + continue + ;; + -l*) + if test lib != "$linkmode" && test prog != "$linkmode"; then + func_warning "'-l' is ignored for archives/objects" + continue + fi + func_stripname '-l' '' "$deplib" + name=$func_stripname_result + if test lib = "$linkmode"; then + searchdirs="$newlib_search_path $lib_search_path $compiler_lib_search_dirs $sys_lib_search_path $shlib_search_path" + else + searchdirs="$newlib_search_path $lib_search_path $sys_lib_search_path $shlib_search_path" + fi + for searchdir in $searchdirs; do + for search_ext in .la $std_shrext .so .a; do + # Search the libtool library + lib=$searchdir/lib$name$search_ext + if test -f "$lib"; then + if test .la = "$search_ext"; then + found=: + else + found=false + fi + break 2 + fi + done + done + if $found; then + # deplib is a libtool library + # If $allow_libtool_libs_with_static_runtimes && $deplib is a stdlib, + # We need to do some special things here, and not later. + if test yes = "$allow_libtool_libs_with_static_runtimes"; then + case " $predeps $postdeps " in + *" $deplib "*) + if func_lalib_p "$lib"; then + library_names= + old_library= + func_source "$lib" + for l in $old_library $library_names; do + ll=$l + done + if test "X$ll" = "X$old_library"; then # only static version available + found=false + func_dirname "$lib" "" "." + ladir=$func_dirname_result + lib=$ladir/$old_library + if test prog,link = "$linkmode,$pass"; then + compile_deplibs="$deplib $compile_deplibs" + finalize_deplibs="$deplib $finalize_deplibs" + else + deplibs="$deplib $deplibs" + test lib = "$linkmode" && newdependency_libs="$deplib $newdependency_libs" + fi + continue + fi + fi + ;; + *) ;; + esac + fi + else + # deplib doesn't seem to be a libtool library + if test prog,link = "$linkmode,$pass"; then + compile_deplibs="$deplib $compile_deplibs" + finalize_deplibs="$deplib $finalize_deplibs" + else + deplibs="$deplib $deplibs" + test lib = "$linkmode" && newdependency_libs="$deplib $newdependency_libs" + fi + continue + fi + ;; # -l + *.ltframework) + if test prog,link = "$linkmode,$pass"; then + compile_deplibs="$deplib $compile_deplibs" + finalize_deplibs="$deplib $finalize_deplibs" + else + deplibs="$deplib $deplibs" + if test lib = "$linkmode"; then + case "$new_inherited_linker_flags " in + *" $deplib "*) ;; + * ) func_append new_inherited_linker_flags " $deplib" ;; + esac + fi + fi + continue + ;; + -L*) + case $linkmode in + lib) + deplibs="$deplib $deplibs" + test conv = "$pass" && continue + newdependency_libs="$deplib $newdependency_libs" + func_stripname '-L' '' "$deplib" + func_resolve_sysroot "$func_stripname_result" + func_append newlib_search_path " $func_resolve_sysroot_result" + ;; + prog) + if test conv = "$pass"; then + deplibs="$deplib $deplibs" + continue + fi + if test scan = "$pass"; then + deplibs="$deplib $deplibs" + else + compile_deplibs="$deplib $compile_deplibs" + finalize_deplibs="$deplib $finalize_deplibs" + fi + func_stripname '-L' '' "$deplib" + func_resolve_sysroot "$func_stripname_result" + func_append newlib_search_path " $func_resolve_sysroot_result" + ;; + *) + func_warning "'-L' is ignored for archives/objects" + ;; + esac # linkmode + continue + ;; # -L + -R*) + if test link = "$pass"; then + func_stripname '-R' '' "$deplib" + func_resolve_sysroot "$func_stripname_result" + dir=$func_resolve_sysroot_result + # Make sure the xrpath contains only unique directories. + case "$xrpath " in + *" $dir "*) ;; + *) func_append xrpath " $dir" ;; + esac + fi + deplibs="$deplib $deplibs" + continue + ;; + *.la) + func_resolve_sysroot "$deplib" + lib=$func_resolve_sysroot_result + ;; + *.$libext) + if test conv = "$pass"; then + deplibs="$deplib $deplibs" + continue + fi + case $linkmode in + lib) + # Linking convenience modules into shared libraries is allowed, + # but linking other static libraries is non-portable. + case " $dlpreconveniencelibs " in + *" $deplib "*) ;; + *) + valid_a_lib=false + case $deplibs_check_method in + match_pattern*) + set dummy $deplibs_check_method; shift + match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"` + if eval "\$ECHO \"$deplib\"" 2>/dev/null | $SED 10q \ + | $EGREP "$match_pattern_regex" > /dev/null; then + valid_a_lib=: + fi + ;; + pass_all) + valid_a_lib=: + ;; + esac + if $valid_a_lib; then + echo + $ECHO "*** Warning: Linking the shared library $output against the" + $ECHO "*** static library $deplib is not portable!" + deplibs="$deplib $deplibs" + else + echo + $ECHO "*** Warning: Trying to link with static lib archive $deplib." + echo "*** I have the capability to make that library automatically link in when" + echo "*** you link to this library. But I can only do this if you have a" + echo "*** shared version of the library, which you do not appear to have" + echo "*** because the file extensions .$libext of this argument makes me believe" + echo "*** that it is just a static archive that I should not use here." + fi + ;; + esac + continue + ;; + prog) + if test link != "$pass"; then + deplibs="$deplib $deplibs" + else + compile_deplibs="$deplib $compile_deplibs" + finalize_deplibs="$deplib $finalize_deplibs" + fi + continue + ;; + esac # linkmode + ;; # *.$libext + *.lo | *.$objext) + if test conv = "$pass"; then + deplibs="$deplib $deplibs" + elif test prog = "$linkmode"; then + if test dlpreopen = "$pass" || test yes != "$dlopen_support" || test no = "$build_libtool_libs"; then + # If there is no dlopen support or we're linking statically, + # we need to preload. + func_append newdlprefiles " $deplib" + compile_deplibs="$deplib $compile_deplibs" + finalize_deplibs="$deplib $finalize_deplibs" + else + func_append newdlfiles " $deplib" + fi + fi + continue + ;; + %DEPLIBS%) + alldeplibs=: + continue + ;; + esac # case $deplib + + $found || test -f "$lib" \ + || func_fatal_error "cannot find the library '$lib' or unhandled argument '$deplib'" + + # Check to see that this really is a libtool archive. + func_lalib_unsafe_p "$lib" \ + || func_fatal_error "'$lib' is not a valid libtool archive" + + func_dirname "$lib" "" "." + ladir=$func_dirname_result + + dlname= + dlopen= + dlpreopen= + libdir= + library_names= + old_library= + inherited_linker_flags= + # If the library was installed with an old release of libtool, + # it will not redefine variables installed, or shouldnotlink + installed=yes + shouldnotlink=no + avoidtemprpath= + + + # Read the .la file + func_source "$lib" + + # Convert "-framework foo" to "foo.ltframework" + if test -n "$inherited_linker_flags"; then + tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g'` + for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do + case " $new_inherited_linker_flags " in + *" $tmp_inherited_linker_flag "*) ;; + *) func_append new_inherited_linker_flags " $tmp_inherited_linker_flag";; + esac + done + fi + dependency_libs=`$ECHO " $dependency_libs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` + if test lib,link = "$linkmode,$pass" || + test prog,scan = "$linkmode,$pass" || + { test prog != "$linkmode" && test lib != "$linkmode"; }; then + test -n "$dlopen" && func_append dlfiles " $dlopen" + test -n "$dlpreopen" && func_append dlprefiles " $dlpreopen" + fi + + if test conv = "$pass"; then + # Only check for convenience libraries + deplibs="$lib $deplibs" + if test -z "$libdir"; then + if test -z "$old_library"; then + func_fatal_error "cannot find name of link library for '$lib'" + fi + # It is a libtool convenience library, so add in its objects. + func_append convenience " $ladir/$objdir/$old_library" + func_append old_convenience " $ladir/$objdir/$old_library" + elif test prog != "$linkmode" && test lib != "$linkmode"; then + func_fatal_error "'$lib' is not a convenience library" + fi + tmp_libs= + for deplib in $dependency_libs; do + deplibs="$deplib $deplibs" + if $opt_preserve_dup_deps; then + case "$tmp_libs " in + *" $deplib "*) func_append specialdeplibs " $deplib" ;; + esac + fi + func_append tmp_libs " $deplib" + done + continue + fi # $pass = conv + + + # Get the name of the library we link against. + linklib= + if test -n "$old_library" && + { test yes = "$prefer_static_libs" || + test built,no = "$prefer_static_libs,$installed"; }; then + linklib=$old_library + else + for l in $old_library $library_names; do + linklib=$l + done + fi + if test -z "$linklib"; then + func_fatal_error "cannot find name of link library for '$lib'" + fi + + # This library was specified with -dlopen. + if test dlopen = "$pass"; then + test -z "$libdir" \ + && func_fatal_error "cannot -dlopen a convenience library: '$lib'" + if test -z "$dlname" || + test yes != "$dlopen_support" || + test no = "$build_libtool_libs" + then + # If there is no dlname, no dlopen support or we're linking + # statically, we need to preload. We also need to preload any + # dependent libraries so libltdl's deplib preloader doesn't + # bomb out in the load deplibs phase. + func_append dlprefiles " $lib $dependency_libs" + else + func_append newdlfiles " $lib" + fi + continue + fi # $pass = dlopen + + # We need an absolute path. + case $ladir in + [\\/]* | [A-Za-z]:[\\/]*) abs_ladir=$ladir ;; + *) + abs_ladir=`cd "$ladir" && pwd` + if test -z "$abs_ladir"; then + func_warning "cannot determine absolute directory name of '$ladir'" + func_warning "passing it literally to the linker, although it might fail" + abs_ladir=$ladir + fi + ;; + esac + func_basename "$lib" + laname=$func_basename_result + + # Find the relevant object directory and library name. + if test yes = "$installed"; then + if test ! -f "$lt_sysroot$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then + func_warning "library '$lib' was moved." + dir=$ladir + absdir=$abs_ladir + libdir=$abs_ladir + else + dir=$lt_sysroot$libdir + absdir=$lt_sysroot$libdir + fi + test yes = "$hardcode_automatic" && avoidtemprpath=yes + else + if test ! -f "$ladir/$objdir/$linklib" && test -f "$abs_ladir/$linklib"; then + dir=$ladir + absdir=$abs_ladir + # Remove this search path later + func_append notinst_path " $abs_ladir" + else + dir=$ladir/$objdir + absdir=$abs_ladir/$objdir + # Remove this search path later + func_append notinst_path " $abs_ladir" + fi + fi # $installed = yes + func_stripname 'lib' '.la' "$laname" + name=$func_stripname_result + + # This library was specified with -dlpreopen. + if test dlpreopen = "$pass"; then + if test -z "$libdir" && test prog = "$linkmode"; then + func_fatal_error "only libraries may -dlpreopen a convenience library: '$lib'" + fi + case $host in + # special handling for platforms with PE-DLLs. + *cygwin* | *mingw* | *cegcc* ) + # Linker will automatically link against shared library if both + # static and shared are present. Therefore, ensure we extract + # symbols from the import library if a shared library is present + # (otherwise, the dlopen module name will be incorrect). We do + # this by putting the import library name into $newdlprefiles. + # We recover the dlopen module name by 'saving' the la file + # name in a special purpose variable, and (later) extracting the + # dlname from the la file. + if test -n "$dlname"; then + func_tr_sh "$dir/$linklib" + eval "libfile_$func_tr_sh_result=\$abs_ladir/\$laname" + func_append newdlprefiles " $dir/$linklib" + else + func_append newdlprefiles " $dir/$old_library" + # Keep a list of preopened convenience libraries to check + # that they are being used correctly in the link pass. + test -z "$libdir" && \ + func_append dlpreconveniencelibs " $dir/$old_library" + fi + ;; + * ) + # Prefer using a static library (so that no silly _DYNAMIC symbols + # are required to link). + if test -n "$old_library"; then + func_append newdlprefiles " $dir/$old_library" + # Keep a list of preopened convenience libraries to check + # that they are being used correctly in the link pass. + test -z "$libdir" && \ + func_append dlpreconveniencelibs " $dir/$old_library" + # Otherwise, use the dlname, so that lt_dlopen finds it. + elif test -n "$dlname"; then + func_append newdlprefiles " $dir/$dlname" + else + func_append newdlprefiles " $dir/$linklib" + fi + ;; + esac + fi # $pass = dlpreopen + + if test -z "$libdir"; then + # Link the convenience library + if test lib = "$linkmode"; then + deplibs="$dir/$old_library $deplibs" + elif test prog,link = "$linkmode,$pass"; then + compile_deplibs="$dir/$old_library $compile_deplibs" + finalize_deplibs="$dir/$old_library $finalize_deplibs" + else + deplibs="$lib $deplibs" # used for prog,scan pass + fi + continue + fi + + + if test prog = "$linkmode" && test link != "$pass"; then + func_append newlib_search_path " $ladir" + deplibs="$lib $deplibs" + + linkalldeplibs=false + if test no != "$link_all_deplibs" || test -z "$library_names" || + test no = "$build_libtool_libs"; then + linkalldeplibs=: + fi + + tmp_libs= + for deplib in $dependency_libs; do + case $deplib in + -L*) func_stripname '-L' '' "$deplib" + func_resolve_sysroot "$func_stripname_result" + func_append newlib_search_path " $func_resolve_sysroot_result" + ;; + esac + # Need to link against all dependency_libs? + if $linkalldeplibs; then + deplibs="$deplib $deplibs" + else + # Need to hardcode shared library paths + # or/and link against static libraries + newdependency_libs="$deplib $newdependency_libs" + fi + if $opt_preserve_dup_deps; then + case "$tmp_libs " in + *" $deplib "*) func_append specialdeplibs " $deplib" ;; + esac + fi + func_append tmp_libs " $deplib" + done # for deplib + continue + fi # $linkmode = prog... + + if test prog,link = "$linkmode,$pass"; then + if test -n "$library_names" && + { { test no = "$prefer_static_libs" || + test built,yes = "$prefer_static_libs,$installed"; } || + test -z "$old_library"; }; then + # We need to hardcode the library path + if test -n "$shlibpath_var" && test -z "$avoidtemprpath"; then + # Make sure the rpath contains only unique directories. + case $temp_rpath: in + *"$absdir:"*) ;; + *) func_append temp_rpath "$absdir:" ;; + esac + fi + + # Hardcode the library path. + # Skip directories that are in the system default run-time + # search path. + case " $sys_lib_dlsearch_path " in + *" $absdir "*) ;; + *) + case "$compile_rpath " in + *" $absdir "*) ;; + *) func_append compile_rpath " $absdir" ;; + esac + ;; + esac + case " $sys_lib_dlsearch_path " in + *" $libdir "*) ;; + *) + case "$finalize_rpath " in + *" $libdir "*) ;; + *) func_append finalize_rpath " $libdir" ;; + esac + ;; + esac + fi # $linkmode,$pass = prog,link... + + if $alldeplibs && + { test pass_all = "$deplibs_check_method" || + { test yes = "$build_libtool_libs" && + test -n "$library_names"; }; }; then + # We only need to search for static libraries + continue + fi + fi + + link_static=no # Whether the deplib will be linked statically + use_static_libs=$prefer_static_libs + if test built = "$use_static_libs" && test yes = "$installed"; then + use_static_libs=no + fi + if test -n "$library_names" && + { test no = "$use_static_libs" || test -z "$old_library"; }; then + case $host in + *cygwin* | *mingw* | *cegcc* | *os2*) + # No point in relinking DLLs because paths are not encoded + func_append notinst_deplibs " $lib" + need_relink=no + ;; + *) + if test no = "$installed"; then + func_append notinst_deplibs " $lib" + need_relink=yes + fi + ;; + esac + # This is a shared library + + # Warn about portability, can't link against -module's on some + # systems (darwin). Don't bleat about dlopened modules though! + dlopenmodule= + for dlpremoduletest in $dlprefiles; do + if test "X$dlpremoduletest" = "X$lib"; then + dlopenmodule=$dlpremoduletest + break + fi + done + if test -z "$dlopenmodule" && test yes = "$shouldnotlink" && test link = "$pass"; then + echo + if test prog = "$linkmode"; then + $ECHO "*** Warning: Linking the executable $output against the loadable module" + else + $ECHO "*** Warning: Linking the shared library $output against the loadable module" + fi + $ECHO "*** $linklib is not portable!" + fi + if test lib = "$linkmode" && + test yes = "$hardcode_into_libs"; then + # Hardcode the library path. + # Skip directories that are in the system default run-time + # search path. + case " $sys_lib_dlsearch_path " in + *" $absdir "*) ;; + *) + case "$compile_rpath " in + *" $absdir "*) ;; + *) func_append compile_rpath " $absdir" ;; + esac + ;; + esac + case " $sys_lib_dlsearch_path " in + *" $libdir "*) ;; + *) + case "$finalize_rpath " in + *" $libdir "*) ;; + *) func_append finalize_rpath " $libdir" ;; + esac + ;; + esac + fi + + if test -n "$old_archive_from_expsyms_cmds"; then + # figure out the soname + set dummy $library_names + shift + realname=$1 + shift + libname=`eval "\\$ECHO \"$libname_spec\""` + # use dlname if we got it. it's perfectly good, no? + if test -n "$dlname"; then + soname=$dlname + elif test -n "$soname_spec"; then + # bleh windows + case $host in + *cygwin* | mingw* | *cegcc* | *os2*) + func_arith $current - $age + major=$func_arith_result + versuffix=-$major + ;; + esac + eval soname=\"$soname_spec\" + else + soname=$realname + fi + + # Make a new name for the extract_expsyms_cmds to use + soroot=$soname + func_basename "$soroot" + soname=$func_basename_result + func_stripname 'lib' '.dll' "$soname" + newlib=libimp-$func_stripname_result.a + + # If the library has no export list, then create one now + if test -f "$output_objdir/$soname-def"; then : + else + func_verbose "extracting exported symbol list from '$soname'" + func_execute_cmds "$extract_expsyms_cmds" 'exit $?' + fi + + # Create $newlib + if test -f "$output_objdir/$newlib"; then :; else + func_verbose "generating import library for '$soname'" + func_execute_cmds "$old_archive_from_expsyms_cmds" 'exit $?' + fi + # make sure the library variables are pointing to the new library + dir=$output_objdir + linklib=$newlib + fi # test -n "$old_archive_from_expsyms_cmds" + + if test prog = "$linkmode" || test relink != "$opt_mode"; then + add_shlibpath= + add_dir= + add= + lib_linked=yes + case $hardcode_action in + immediate | unsupported) + if test no = "$hardcode_direct"; then + add=$dir/$linklib + case $host in + *-*-sco3.2v5.0.[024]*) add_dir=-L$dir ;; + *-*-sysv4*uw2*) add_dir=-L$dir ;; + *-*-sysv5OpenUNIX* | *-*-sysv5UnixWare7.[01].[10]* | \ + *-*-unixware7*) add_dir=-L$dir ;; + *-*-darwin* ) + # if the lib is a (non-dlopened) module then we cannot + # link against it, someone is ignoring the earlier warnings + if /usr/bin/file -L $add 2> /dev/null | + $GREP ": [^:]* bundle" >/dev/null; then + if test "X$dlopenmodule" != "X$lib"; then + $ECHO "*** Warning: lib $linklib is a module, not a shared library" + if test -z "$old_library"; then + echo + echo "*** And there doesn't seem to be a static archive available" + echo "*** The link will probably fail, sorry" + else + add=$dir/$old_library + fi + elif test -n "$old_library"; then + add=$dir/$old_library + fi + fi + esac + elif test no = "$hardcode_minus_L"; then + case $host in + *-*-sunos*) add_shlibpath=$dir ;; + esac + add_dir=-L$dir + add=-l$name + elif test no = "$hardcode_shlibpath_var"; then + add_shlibpath=$dir + add=-l$name + else + lib_linked=no + fi + ;; + relink) + if test yes = "$hardcode_direct" && + test no = "$hardcode_direct_absolute"; then + add=$dir/$linklib + elif test yes = "$hardcode_minus_L"; then + add_dir=-L$absdir + # Try looking first in the location we're being installed to. + if test -n "$inst_prefix_dir"; then + case $libdir in + [\\/]*) + func_append add_dir " -L$inst_prefix_dir$libdir" + ;; + esac + fi + add=-l$name + elif test yes = "$hardcode_shlibpath_var"; then + add_shlibpath=$dir + add=-l$name + else + lib_linked=no + fi + ;; + *) lib_linked=no ;; + esac + + if test yes != "$lib_linked"; then + func_fatal_configuration "unsupported hardcode properties" + fi + + if test -n "$add_shlibpath"; then + case :$compile_shlibpath: in + *":$add_shlibpath:"*) ;; + *) func_append compile_shlibpath "$add_shlibpath:" ;; + esac + fi + if test prog = "$linkmode"; then + test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs" + test -n "$add" && compile_deplibs="$add $compile_deplibs" + else + test -n "$add_dir" && deplibs="$add_dir $deplibs" + test -n "$add" && deplibs="$add $deplibs" + if test yes != "$hardcode_direct" && + test yes != "$hardcode_minus_L" && + test yes = "$hardcode_shlibpath_var"; then + case :$finalize_shlibpath: in + *":$libdir:"*) ;; + *) func_append finalize_shlibpath "$libdir:" ;; + esac + fi + fi + fi + + if test prog = "$linkmode" || test relink = "$opt_mode"; then + add_shlibpath= + add_dir= + add= + # Finalize command for both is simple: just hardcode it. + if test yes = "$hardcode_direct" && + test no = "$hardcode_direct_absolute"; then + add=$libdir/$linklib + elif test yes = "$hardcode_minus_L"; then + add_dir=-L$libdir + add=-l$name + elif test yes = "$hardcode_shlibpath_var"; then + case :$finalize_shlibpath: in + *":$libdir:"*) ;; + *) func_append finalize_shlibpath "$libdir:" ;; + esac + add=-l$name + elif test yes = "$hardcode_automatic"; then + if test -n "$inst_prefix_dir" && + test -f "$inst_prefix_dir$libdir/$linklib"; then + add=$inst_prefix_dir$libdir/$linklib + else + add=$libdir/$linklib + fi + else + # We cannot seem to hardcode it, guess we'll fake it. + add_dir=-L$libdir + # Try looking first in the location we're being installed to. + if test -n "$inst_prefix_dir"; then + case $libdir in + [\\/]*) + func_append add_dir " -L$inst_prefix_dir$libdir" + ;; + esac + fi + add=-l$name + fi + + if test prog = "$linkmode"; then + test -n "$add_dir" && finalize_deplibs="$add_dir $finalize_deplibs" + test -n "$add" && finalize_deplibs="$add $finalize_deplibs" + else + test -n "$add_dir" && deplibs="$add_dir $deplibs" + test -n "$add" && deplibs="$add $deplibs" + fi + fi + elif test prog = "$linkmode"; then + # Here we assume that one of hardcode_direct or hardcode_minus_L + # is not unsupported. This is valid on all known static and + # shared platforms. + if test unsupported != "$hardcode_direct"; then + test -n "$old_library" && linklib=$old_library + compile_deplibs="$dir/$linklib $compile_deplibs" + finalize_deplibs="$dir/$linklib $finalize_deplibs" + else + compile_deplibs="-l$name -L$dir $compile_deplibs" + finalize_deplibs="-l$name -L$dir $finalize_deplibs" + fi + elif test yes = "$build_libtool_libs"; then + # Not a shared library + if test pass_all != "$deplibs_check_method"; then + # We're trying link a shared library against a static one + # but the system doesn't support it. + + # Just print a warning and add the library to dependency_libs so + # that the program can be linked against the static library. + echo + $ECHO "*** Warning: This system cannot link to static lib archive $lib." + echo "*** I have the capability to make that library automatically link in when" + echo "*** you link to this library. But I can only do this if you have a" + echo "*** shared version of the library, which you do not appear to have." + if test yes = "$module"; then + echo "*** But as you try to build a module library, libtool will still create " + echo "*** a static module, that should work as long as the dlopening application" + echo "*** is linked with the -dlopen flag to resolve symbols at runtime." + if test -z "$global_symbol_pipe"; then + echo + echo "*** However, this would only work if libtool was able to extract symbol" + echo "*** lists from a program, using 'nm' or equivalent, but libtool could" + echo "*** not find such a program. So, this module is probably useless." + echo "*** 'nm' from GNU binutils and a full rebuild may help." + fi + if test no = "$build_old_libs"; then + build_libtool_libs=module + build_old_libs=yes + else + build_libtool_libs=no + fi + fi + else + deplibs="$dir/$old_library $deplibs" + link_static=yes + fi + fi # link shared/static library? + + if test lib = "$linkmode"; then + if test -n "$dependency_libs" && + { test yes != "$hardcode_into_libs" || + test yes = "$build_old_libs" || + test yes = "$link_static"; }; then + # Extract -R from dependency_libs + temp_deplibs= + for libdir in $dependency_libs; do + case $libdir in + -R*) func_stripname '-R' '' "$libdir" + temp_xrpath=$func_stripname_result + case " $xrpath " in + *" $temp_xrpath "*) ;; + *) func_append xrpath " $temp_xrpath";; + esac;; + *) func_append temp_deplibs " $libdir";; + esac + done + dependency_libs=$temp_deplibs + fi + + func_append newlib_search_path " $absdir" + # Link against this library + test no = "$link_static" && newdependency_libs="$abs_ladir/$laname $newdependency_libs" + # ... and its dependency_libs + tmp_libs= + for deplib in $dependency_libs; do + newdependency_libs="$deplib $newdependency_libs" + case $deplib in + -L*) func_stripname '-L' '' "$deplib" + func_resolve_sysroot "$func_stripname_result";; + *) func_resolve_sysroot "$deplib" ;; + esac + if $opt_preserve_dup_deps; then + case "$tmp_libs " in + *" $func_resolve_sysroot_result "*) + func_append specialdeplibs " $func_resolve_sysroot_result" ;; + esac + fi + func_append tmp_libs " $func_resolve_sysroot_result" + done + + if test no != "$link_all_deplibs"; then + # Add the search paths of all dependency libraries + for deplib in $dependency_libs; do + path= + case $deplib in + -L*) path=$deplib ;; + *.la) + func_resolve_sysroot "$deplib" + deplib=$func_resolve_sysroot_result + func_dirname "$deplib" "" "." + dir=$func_dirname_result + # We need an absolute path. + case $dir in + [\\/]* | [A-Za-z]:[\\/]*) absdir=$dir ;; + *) + absdir=`cd "$dir" && pwd` + if test -z "$absdir"; then + func_warning "cannot determine absolute directory name of '$dir'" + absdir=$dir + fi + ;; + esac + if $GREP "^installed=no" $deplib > /dev/null; then + case $host in + *-*-darwin*) + depdepl= + eval deplibrary_names=`$SED -n -e 's/^library_names=\(.*\)$/\1/p' $deplib` + if test -n "$deplibrary_names"; then + for tmp in $deplibrary_names; do + depdepl=$tmp + done + if test -f "$absdir/$objdir/$depdepl"; then + depdepl=$absdir/$objdir/$depdepl + darwin_install_name=`$OTOOL -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'` + if test -z "$darwin_install_name"; then + darwin_install_name=`$OTOOL64 -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'` + fi + func_append compiler_flags " $wl-dylib_file $wl$darwin_install_name:$depdepl" + func_append linker_flags " -dylib_file $darwin_install_name:$depdepl" + path= + fi + fi + ;; + *) + path=-L$absdir/$objdir + ;; + esac + else + eval libdir=`$SED -n -e 's/^libdir=\(.*\)$/\1/p' $deplib` + test -z "$libdir" && \ + func_fatal_error "'$deplib' is not a valid libtool archive" + test "$absdir" != "$libdir" && \ + func_warning "'$deplib' seems to be moved" + + path=-L$absdir + fi + ;; + esac + case " $deplibs " in + *" $path "*) ;; + *) deplibs="$path $deplibs" ;; + esac + done + fi # link_all_deplibs != no + fi # linkmode = lib + done # for deplib in $libs + if test link = "$pass"; then + if test prog = "$linkmode"; then + compile_deplibs="$new_inherited_linker_flags $compile_deplibs" + finalize_deplibs="$new_inherited_linker_flags $finalize_deplibs" + else + compiler_flags="$compiler_flags "`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` + fi + fi + dependency_libs=$newdependency_libs + if test dlpreopen = "$pass"; then + # Link the dlpreopened libraries before other libraries + for deplib in $save_deplibs; do + deplibs="$deplib $deplibs" + done + fi + if test dlopen != "$pass"; then + test conv = "$pass" || { + # Make sure lib_search_path contains only unique directories. + lib_search_path= + for dir in $newlib_search_path; do + case "$lib_search_path " in + *" $dir "*) ;; + *) func_append lib_search_path " $dir" ;; + esac + done + newlib_search_path= + } + + if test prog,link = "$linkmode,$pass"; then + vars="compile_deplibs finalize_deplibs" + else + vars=deplibs + fi + for var in $vars dependency_libs; do + # Add libraries to $var in reverse order + eval tmp_libs=\"\$$var\" + new_libs= + for deplib in $tmp_libs; do + # FIXME: Pedantically, this is the right thing to do, so + # that some nasty dependency loop isn't accidentally + # broken: + #new_libs="$deplib $new_libs" + # Pragmatically, this seems to cause very few problems in + # practice: + case $deplib in + -L*) new_libs="$deplib $new_libs" ;; + -R*) ;; + *) + # And here is the reason: when a library appears more + # than once as an explicit dependence of a library, or + # is implicitly linked in more than once by the + # compiler, it is considered special, and multiple + # occurrences thereof are not removed. Compare this + # with having the same library being listed as a + # dependency of multiple other libraries: in this case, + # we know (pedantically, we assume) the library does not + # need to be listed more than once, so we keep only the + # last copy. This is not always right, but it is rare + # enough that we require users that really mean to play + # such unportable linking tricks to link the library + # using -Wl,-lname, so that libtool does not consider it + # for duplicate removal. + case " $specialdeplibs " in + *" $deplib "*) new_libs="$deplib $new_libs" ;; + *) + case " $new_libs " in + *" $deplib "*) ;; + *) new_libs="$deplib $new_libs" ;; + esac + ;; + esac + ;; + esac + done + tmp_libs= + for deplib in $new_libs; do + case $deplib in + -L*) + case " $tmp_libs " in + *" $deplib "*) ;; + *) func_append tmp_libs " $deplib" ;; + esac + ;; + *) func_append tmp_libs " $deplib" ;; + esac + done + eval $var=\"$tmp_libs\" + done # for var + fi + + # Add Sun CC postdeps if required: + test CXX = "$tagname" && { + case $host_os in + linux*) + case `$CC -V 2>&1 | sed 5q` in + *Sun\ C*) # Sun C++ 5.9 + func_suncc_cstd_abi + + if test no != "$suncc_use_cstd_abi"; then + func_append postdeps ' -library=Cstd -library=Crun' + fi + ;; + esac + ;; + + solaris*) + func_cc_basename "$CC" + case $func_cc_basename_result in + CC* | sunCC*) + func_suncc_cstd_abi + + if test no != "$suncc_use_cstd_abi"; then + func_append postdeps ' -library=Cstd -library=Crun' + fi + ;; + esac + ;; + esac + } + + # Last step: remove runtime libs from dependency_libs + # (they stay in deplibs) + tmp_libs= + for i in $dependency_libs; do + case " $predeps $postdeps $compiler_lib_search_path " in + *" $i "*) + i= + ;; + esac + if test -n "$i"; then + func_append tmp_libs " $i" + fi + done + dependency_libs=$tmp_libs + done # for pass + if test prog = "$linkmode"; then + dlfiles=$newdlfiles + fi + if test prog = "$linkmode" || test lib = "$linkmode"; then + dlprefiles=$newdlprefiles + fi + + case $linkmode in + oldlib) + if test -n "$dlfiles$dlprefiles" || test no != "$dlself"; then + func_warning "'-dlopen' is ignored for archives" + fi + + case " $deplibs" in + *\ -l* | *\ -L*) + func_warning "'-l' and '-L' are ignored for archives" ;; + esac + + test -n "$rpath" && \ + func_warning "'-rpath' is ignored for archives" + + test -n "$xrpath" && \ + func_warning "'-R' is ignored for archives" + + test -n "$vinfo" && \ + func_warning "'-version-info/-version-number' is ignored for archives" + + test -n "$release" && \ + func_warning "'-release' is ignored for archives" + + test -n "$export_symbols$export_symbols_regex" && \ + func_warning "'-export-symbols' is ignored for archives" + + # Now set the variables for building old libraries. + build_libtool_libs=no + oldlibs=$output + func_append objs "$old_deplibs" + ;; + + lib) + # Make sure we only generate libraries of the form 'libNAME.la'. + case $outputname in + lib*) + func_stripname 'lib' '.la' "$outputname" + name=$func_stripname_result + eval shared_ext=\"$shrext_cmds\" + eval libname=\"$libname_spec\" + ;; + *) + test no = "$module" \ + && func_fatal_help "libtool library '$output' must begin with 'lib'" + + if test no != "$need_lib_prefix"; then + # Add the "lib" prefix for modules if required + func_stripname '' '.la' "$outputname" + name=$func_stripname_result + eval shared_ext=\"$shrext_cmds\" + eval libname=\"$libname_spec\" + else + func_stripname '' '.la' "$outputname" + libname=$func_stripname_result + fi + ;; + esac + + if test -n "$objs"; then + if test pass_all != "$deplibs_check_method"; then + func_fatal_error "cannot build libtool library '$output' from non-libtool objects on this host:$objs" + else + echo + $ECHO "*** Warning: Linking the shared library $output against the non-libtool" + $ECHO "*** objects $objs is not portable!" + func_append libobjs " $objs" + fi + fi + + test no = "$dlself" \ + || func_warning "'-dlopen self' is ignored for libtool libraries" + + set dummy $rpath + shift + test 1 -lt "$#" \ + && func_warning "ignoring multiple '-rpath's for a libtool library" + + install_libdir=$1 + + oldlibs= + if test -z "$rpath"; then + if test yes = "$build_libtool_libs"; then + # Building a libtool convenience library. + # Some compilers have problems with a '.al' extension so + # convenience libraries should have the same extension an + # archive normally would. + oldlibs="$output_objdir/$libname.$libext $oldlibs" + build_libtool_libs=convenience + build_old_libs=yes + fi + + test -n "$vinfo" && \ + func_warning "'-version-info/-version-number' is ignored for convenience libraries" + + test -n "$release" && \ + func_warning "'-release' is ignored for convenience libraries" + else + + # Parse the version information argument. + save_ifs=$IFS; IFS=: + set dummy $vinfo 0 0 0 + shift + IFS=$save_ifs + + test -n "$7" && \ + func_fatal_help "too many parameters to '-version-info'" + + # convert absolute version numbers to libtool ages + # this retains compatibility with .la files and attempts + # to make the code below a bit more comprehensible + + case $vinfo_number in + yes) + number_major=$1 + number_minor=$2 + number_revision=$3 + # + # There are really only two kinds -- those that + # use the current revision as the major version + # and those that subtract age and use age as + # a minor version. But, then there is irix + # that has an extra 1 added just for fun + # + case $version_type in + # correct linux to gnu/linux during the next big refactor + darwin|freebsd-elf|linux|osf|windows|none) + func_arith $number_major + $number_minor + current=$func_arith_result + age=$number_minor + revision=$number_revision + ;; + freebsd-aout|qnx|sunos) + current=$number_major + revision=$number_minor + age=0 + ;; + irix|nonstopux) + func_arith $number_major + $number_minor + current=$func_arith_result + age=$number_minor + revision=$number_minor + lt_irix_increment=no + ;; + esac + ;; + no) + current=$1 + revision=$2 + age=$3 + ;; + esac + + # Check that each of the things are valid numbers. + case $current in + 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;; + *) + func_error "CURRENT '$current' must be a nonnegative integer" + func_fatal_error "'$vinfo' is not valid version information" + ;; + esac + + case $revision in + 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;; + *) + func_error "REVISION '$revision' must be a nonnegative integer" + func_fatal_error "'$vinfo' is not valid version information" + ;; + esac + + case $age in + 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;; + *) + func_error "AGE '$age' must be a nonnegative integer" + func_fatal_error "'$vinfo' is not valid version information" + ;; + esac + + if test "$age" -gt "$current"; then + func_error "AGE '$age' is greater than the current interface number '$current'" + func_fatal_error "'$vinfo' is not valid version information" + fi + + # Calculate the version variables. + major= + versuffix= + verstring= + case $version_type in + none) ;; + + darwin) + # Like Linux, but with the current version available in + # verstring for coding it into the library header + func_arith $current - $age + major=.$func_arith_result + versuffix=$major.$age.$revision + # Darwin ld doesn't like 0 for these options... + func_arith $current + 1 + minor_current=$func_arith_result + xlcverstring="$wl-compatibility_version $wl$minor_current $wl-current_version $wl$minor_current.$revision" + verstring="-compatibility_version $minor_current -current_version $minor_current.$revision" + # On Darwin other compilers + case $CC in + nagfor*) + verstring="$wl-compatibility_version $wl$minor_current $wl-current_version $wl$minor_current.$revision" + ;; + *) + verstring="-compatibility_version $minor_current -current_version $minor_current.$revision" + ;; + esac + ;; + + freebsd-aout) + major=.$current + versuffix=.$current.$revision + ;; + + freebsd-elf) + func_arith $current - $age + major=.$func_arith_result + versuffix=$major.$age.$revision + ;; + + irix | nonstopux) + if test no = "$lt_irix_increment"; then + func_arith $current - $age + else + func_arith $current - $age + 1 + fi + major=$func_arith_result + + case $version_type in + nonstopux) verstring_prefix=nonstopux ;; + *) verstring_prefix=sgi ;; + esac + verstring=$verstring_prefix$major.$revision + + # Add in all the interfaces that we are compatible with. + loop=$revision + while test 0 -ne "$loop"; do + func_arith $revision - $loop + iface=$func_arith_result + func_arith $loop - 1 + loop=$func_arith_result + verstring=$verstring_prefix$major.$iface:$verstring + done + + # Before this point, $major must not contain '.'. + major=.$major + versuffix=$major.$revision + ;; + + linux) # correct to gnu/linux during the next big refactor + func_arith $current - $age + major=.$func_arith_result + versuffix=$major.$age.$revision + ;; + + osf) + func_arith $current - $age + major=.$func_arith_result + versuffix=.$current.$age.$revision + verstring=$current.$age.$revision + + # Add in all the interfaces that we are compatible with. + loop=$age + while test 0 -ne "$loop"; do + func_arith $current - $loop + iface=$func_arith_result + func_arith $loop - 1 + loop=$func_arith_result + verstring=$verstring:$iface.0 + done + + # Make executables depend on our current version. + func_append verstring ":$current.0" + ;; + + qnx) + major=.$current + versuffix=.$current + ;; + + sco) + major=.$current + versuffix=.$current + ;; + + sunos) + major=.$current + versuffix=.$current.$revision + ;; + + windows) + # Use '-' rather than '.', since we only want one + # extension on DOS 8.3 file systems. + func_arith $current - $age + major=$func_arith_result + versuffix=-$major + ;; + + *) + func_fatal_configuration "unknown library version type '$version_type'" + ;; + esac + + # Clear the version info if we defaulted, and they specified a release. + if test -z "$vinfo" && test -n "$release"; then + major= + case $version_type in + darwin) + # we can't check for "0.0" in archive_cmds due to quoting + # problems, so we reset it completely + verstring= + ;; + *) + verstring=0.0 + ;; + esac + if test no = "$need_version"; then + versuffix= + else + versuffix=.0.0 + fi + fi + + # Remove version info from name if versioning should be avoided + if test yes,no = "$avoid_version,$need_version"; then + major= + versuffix= + verstring= + fi + + # Check to see if the archive will have undefined symbols. + if test yes = "$allow_undefined"; then + if test unsupported = "$allow_undefined_flag"; then + if test yes = "$build_old_libs"; then + func_warning "undefined symbols not allowed in $host shared libraries; building static only" + build_libtool_libs=no + else + func_fatal_error "can't build $host shared library unless -no-undefined is specified" + fi + fi + else + # Don't allow undefined symbols. + allow_undefined_flag=$no_undefined_flag + fi + + fi + + func_generate_dlsyms "$libname" "$libname" : + func_append libobjs " $symfileobj" + test " " = "$libobjs" && libobjs= + + if test relink != "$opt_mode"; then + # Remove our outputs, but don't remove object files since they + # may have been created when compiling PIC objects. + removelist= + tempremovelist=`$ECHO "$output_objdir/*"` + for p in $tempremovelist; do + case $p in + *.$objext | *.gcno) + ;; + $output_objdir/$outputname | $output_objdir/$libname.* | $output_objdir/$libname$release.*) + if test -n "$precious_files_regex"; then + if $ECHO "$p" | $EGREP -e "$precious_files_regex" >/dev/null 2>&1 + then + continue + fi + fi + func_append removelist " $p" + ;; + *) ;; + esac + done + test -n "$removelist" && \ + func_show_eval "${RM}r \$removelist" + fi + + # Now set the variables for building old libraries. + if test yes = "$build_old_libs" && test convenience != "$build_libtool_libs"; then + func_append oldlibs " $output_objdir/$libname.$libext" + + # Transform .lo files to .o files. + oldobjs="$objs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.$libext$/d; $lo2o" | $NL2SP` + fi + + # Eliminate all temporary directories. + #for path in $notinst_path; do + # lib_search_path=`$ECHO "$lib_search_path " | $SED "s% $path % %g"` + # deplibs=`$ECHO "$deplibs " | $SED "s% -L$path % %g"` + # dependency_libs=`$ECHO "$dependency_libs " | $SED "s% -L$path % %g"` + #done + + if test -n "$xrpath"; then + # If the user specified any rpath flags, then add them. + temp_xrpath= + for libdir in $xrpath; do + func_replace_sysroot "$libdir" + func_append temp_xrpath " -R$func_replace_sysroot_result" + case "$finalize_rpath " in + *" $libdir "*) ;; + *) func_append finalize_rpath " $libdir" ;; + esac + done + if test yes != "$hardcode_into_libs" || test yes = "$build_old_libs"; then + dependency_libs="$temp_xrpath $dependency_libs" + fi + fi + + # Make sure dlfiles contains only unique files that won't be dlpreopened + old_dlfiles=$dlfiles + dlfiles= + for lib in $old_dlfiles; do + case " $dlprefiles $dlfiles " in + *" $lib "*) ;; + *) func_append dlfiles " $lib" ;; + esac + done + + # Make sure dlprefiles contains only unique files + old_dlprefiles=$dlprefiles + dlprefiles= + for lib in $old_dlprefiles; do + case "$dlprefiles " in + *" $lib "*) ;; + *) func_append dlprefiles " $lib" ;; + esac + done + + if test yes = "$build_libtool_libs"; then + if test -n "$rpath"; then + case $host in + *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-beos* | *-cegcc* | *-*-haiku*) + # these systems don't actually have a c library (as such)! + ;; + *-*-rhapsody* | *-*-darwin1.[012]) + # Rhapsody C library is in the System framework + func_append deplibs " System.ltframework" + ;; + *-*-netbsd*) + # Don't link with libc until the a.out ld.so is fixed. + ;; + *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*) + # Do not include libc due to us having libc/libc_r. + ;; + *-*-sco3.2v5* | *-*-sco5v6*) + # Causes problems with __ctype + ;; + *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*) + # Compiler inserts libc in the correct place for threads to work + ;; + *) + # Add libc to deplibs on all other systems if necessary. + if test yes = "$build_libtool_need_lc"; then + func_append deplibs " -lc" + fi + ;; + esac + fi + + # Transform deplibs into only deplibs that can be linked in shared. + name_save=$name + libname_save=$libname + release_save=$release + versuffix_save=$versuffix + major_save=$major + # I'm not sure if I'm treating the release correctly. I think + # release should show up in the -l (ie -lgmp5) so we don't want to + # add it in twice. Is that correct? + release= + versuffix= + major= + newdeplibs= + droppeddeps=no + case $deplibs_check_method in + pass_all) + # Don't check for shared/static. Everything works. + # This might be a little naive. We might want to check + # whether the library exists or not. But this is on + # osf3 & osf4 and I'm not really sure... Just + # implementing what was already the behavior. + newdeplibs=$deplibs + ;; + test_compile) + # This code stresses the "libraries are programs" paradigm to its + # limits. Maybe even breaks it. We compile a program, linking it + # against the deplibs as a proxy for the library. Then we can check + # whether they linked in statically or dynamically with ldd. + $opt_dry_run || $RM conftest.c + cat > conftest.c </dev/null` + $nocaseglob + else + potential_libs=`ls $i/$libnameglob[.-]* 2>/dev/null` + fi + for potent_lib in $potential_libs; do + # Follow soft links. + if ls -lLd "$potent_lib" 2>/dev/null | + $GREP " -> " >/dev/null; then + continue + fi + # The statement above tries to avoid entering an + # endless loop below, in case of cyclic links. + # We might still enter an endless loop, since a link + # loop can be closed while we follow links, + # but so what? + potlib=$potent_lib + while test -h "$potlib" 2>/dev/null; do + potliblink=`ls -ld $potlib | $SED 's/.* -> //'` + case $potliblink in + [\\/]* | [A-Za-z]:[\\/]*) potlib=$potliblink;; + *) potlib=`$ECHO "$potlib" | $SED 's|[^/]*$||'`"$potliblink";; + esac + done + if eval $file_magic_cmd \"\$potlib\" 2>/dev/null | + $SED -e 10q | + $EGREP "$file_magic_regex" > /dev/null; then + func_append newdeplibs " $a_deplib" + a_deplib= + break 2 + fi + done + done + fi + if test -n "$a_deplib"; then + droppeddeps=yes + echo + $ECHO "*** Warning: linker path does not have real file for library $a_deplib." + echo "*** I have the capability to make that library automatically link in when" + echo "*** you link to this library. But I can only do this if you have a" + echo "*** shared version of the library, which you do not appear to have" + echo "*** because I did check the linker path looking for a file starting" + if test -z "$potlib"; then + $ECHO "*** with $libname but no candidates were found. (...for file magic test)" + else + $ECHO "*** with $libname and none of the candidates passed a file format test" + $ECHO "*** using a file magic. Last file checked: $potlib" + fi + fi + ;; + *) + # Add a -L argument. + func_append newdeplibs " $a_deplib" + ;; + esac + done # Gone through all deplibs. + ;; + match_pattern*) + set dummy $deplibs_check_method; shift + match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"` + for a_deplib in $deplibs; do + case $a_deplib in + -l*) + func_stripname -l '' "$a_deplib" + name=$func_stripname_result + if test yes = "$allow_libtool_libs_with_static_runtimes"; then + case " $predeps $postdeps " in + *" $a_deplib "*) + func_append newdeplibs " $a_deplib" + a_deplib= + ;; + esac + fi + if test -n "$a_deplib"; then + libname=`eval "\\$ECHO \"$libname_spec\""` + for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do + potential_libs=`ls $i/$libname[.-]* 2>/dev/null` + for potent_lib in $potential_libs; do + potlib=$potent_lib # see symlink-check above in file_magic test + if eval "\$ECHO \"$potent_lib\"" 2>/dev/null | $SED 10q | \ + $EGREP "$match_pattern_regex" > /dev/null; then + func_append newdeplibs " $a_deplib" + a_deplib= + break 2 + fi + done + done + fi + if test -n "$a_deplib"; then + droppeddeps=yes + echo + $ECHO "*** Warning: linker path does not have real file for library $a_deplib." + echo "*** I have the capability to make that library automatically link in when" + echo "*** you link to this library. But I can only do this if you have a" + echo "*** shared version of the library, which you do not appear to have" + echo "*** because I did check the linker path looking for a file starting" + if test -z "$potlib"; then + $ECHO "*** with $libname but no candidates were found. (...for regex pattern test)" + else + $ECHO "*** with $libname and none of the candidates passed a file format test" + $ECHO "*** using a regex pattern. Last file checked: $potlib" + fi + fi + ;; + *) + # Add a -L argument. + func_append newdeplibs " $a_deplib" + ;; + esac + done # Gone through all deplibs. + ;; + none | unknown | *) + newdeplibs= + tmp_deplibs=`$ECHO " $deplibs" | $SED 's/ -lc$//; s/ -[LR][^ ]*//g'` + if test yes = "$allow_libtool_libs_with_static_runtimes"; then + for i in $predeps $postdeps; do + # can't use Xsed below, because $i might contain '/' + tmp_deplibs=`$ECHO " $tmp_deplibs" | $SED "s|$i||"` + done + fi + case $tmp_deplibs in + *[!\ \ ]*) + echo + if test none = "$deplibs_check_method"; then + echo "*** Warning: inter-library dependencies are not supported in this platform." + else + echo "*** Warning: inter-library dependencies are not known to be supported." + fi + echo "*** All declared inter-library dependencies are being dropped." + droppeddeps=yes + ;; + esac + ;; + esac + versuffix=$versuffix_save + major=$major_save + release=$release_save + libname=$libname_save + name=$name_save + + case $host in + *-*-rhapsody* | *-*-darwin1.[012]) + # On Rhapsody replace the C library with the System framework + newdeplibs=`$ECHO " $newdeplibs" | $SED 's/ -lc / System.ltframework /'` + ;; + esac + + if test yes = "$droppeddeps"; then + if test yes = "$module"; then + echo + echo "*** Warning: libtool could not satisfy all declared inter-library" + $ECHO "*** dependencies of module $libname. Therefore, libtool will create" + echo "*** a static module, that should work as long as the dlopening" + echo "*** application is linked with the -dlopen flag." + if test -z "$global_symbol_pipe"; then + echo + echo "*** However, this would only work if libtool was able to extract symbol" + echo "*** lists from a program, using 'nm' or equivalent, but libtool could" + echo "*** not find such a program. So, this module is probably useless." + echo "*** 'nm' from GNU binutils and a full rebuild may help." + fi + if test no = "$build_old_libs"; then + oldlibs=$output_objdir/$libname.$libext + build_libtool_libs=module + build_old_libs=yes + else + build_libtool_libs=no + fi + else + echo "*** The inter-library dependencies that have been dropped here will be" + echo "*** automatically added whenever a program is linked with this library" + echo "*** or is declared to -dlopen it." + + if test no = "$allow_undefined"; then + echo + echo "*** Since this library must not contain undefined symbols," + echo "*** because either the platform does not support them or" + echo "*** it was explicitly requested with -no-undefined," + echo "*** libtool will only create a static version of it." + if test no = "$build_old_libs"; then + oldlibs=$output_objdir/$libname.$libext + build_libtool_libs=module + build_old_libs=yes + else + build_libtool_libs=no + fi + fi + fi + fi + # Done checking deplibs! + deplibs=$newdeplibs + fi + # Time to change all our "foo.ltframework" stuff back to "-framework foo" + case $host in + *-*-darwin*) + newdeplibs=`$ECHO " $newdeplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` + new_inherited_linker_flags=`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` + deplibs=`$ECHO " $deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` + ;; + esac + + # move library search paths that coincide with paths to not yet + # installed libraries to the beginning of the library search list + new_libs= + for path in $notinst_path; do + case " $new_libs " in + *" -L$path/$objdir "*) ;; + *) + case " $deplibs " in + *" -L$path/$objdir "*) + func_append new_libs " -L$path/$objdir" ;; + esac + ;; + esac + done + for deplib in $deplibs; do + case $deplib in + -L*) + case " $new_libs " in + *" $deplib "*) ;; + *) func_append new_libs " $deplib" ;; + esac + ;; + *) func_append new_libs " $deplib" ;; + esac + done + deplibs=$new_libs + + # All the library-specific variables (install_libdir is set above). + library_names= + old_library= + dlname= + + # Test again, we may have decided not to build it any more + if test yes = "$build_libtool_libs"; then + # Remove $wl instances when linking with ld. + # FIXME: should test the right _cmds variable. + case $archive_cmds in + *\$LD\ *) wl= ;; + esac + if test yes = "$hardcode_into_libs"; then + # Hardcode the library paths + hardcode_libdirs= + dep_rpath= + rpath=$finalize_rpath + test relink = "$opt_mode" || rpath=$compile_rpath$rpath + for libdir in $rpath; do + if test -n "$hardcode_libdir_flag_spec"; then + if test -n "$hardcode_libdir_separator"; then + func_replace_sysroot "$libdir" + libdir=$func_replace_sysroot_result + if test -z "$hardcode_libdirs"; then + hardcode_libdirs=$libdir + else + # Just accumulate the unique libdirs. + case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in + *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) + ;; + *) + func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" + ;; + esac + fi + else + eval flag=\"$hardcode_libdir_flag_spec\" + func_append dep_rpath " $flag" + fi + elif test -n "$runpath_var"; then + case "$perm_rpath " in + *" $libdir "*) ;; + *) func_append perm_rpath " $libdir" ;; + esac + fi + done + # Substitute the hardcoded libdirs into the rpath. + if test -n "$hardcode_libdir_separator" && + test -n "$hardcode_libdirs"; then + libdir=$hardcode_libdirs + eval "dep_rpath=\"$hardcode_libdir_flag_spec\"" + fi + if test -n "$runpath_var" && test -n "$perm_rpath"; then + # We should set the runpath_var. + rpath= + for dir in $perm_rpath; do + func_append rpath "$dir:" + done + eval "$runpath_var='$rpath\$$runpath_var'; export $runpath_var" + fi + test -n "$dep_rpath" && deplibs="$dep_rpath $deplibs" + fi + + shlibpath=$finalize_shlibpath + test relink = "$opt_mode" || shlibpath=$compile_shlibpath$shlibpath + if test -n "$shlibpath"; then + eval "$shlibpath_var='$shlibpath\$$shlibpath_var'; export $shlibpath_var" + fi + + # Get the real and link names of the library. + eval shared_ext=\"$shrext_cmds\" + eval library_names=\"$library_names_spec\" + set dummy $library_names + shift + realname=$1 + shift + + if test -n "$soname_spec"; then + eval soname=\"$soname_spec\" + else + soname=$realname + fi + if test -z "$dlname"; then + dlname=$soname + fi + + lib=$output_objdir/$realname + linknames= + for link + do + func_append linknames " $link" + done + + # Use standard objects if they are pic + test -z "$pic_flag" && libobjs=`$ECHO "$libobjs" | $SP2NL | $SED "$lo2o" | $NL2SP` + test "X$libobjs" = "X " && libobjs= + + delfiles= + if test -n "$export_symbols" && test -n "$include_expsyms"; then + $opt_dry_run || cp "$export_symbols" "$output_objdir/$libname.uexp" + export_symbols=$output_objdir/$libname.uexp + func_append delfiles " $export_symbols" + fi + + orig_export_symbols= + case $host_os in + cygwin* | mingw* | cegcc*) + if test -n "$export_symbols" && test -z "$export_symbols_regex"; then + # exporting using user supplied symfile + func_dll_def_p "$export_symbols" || { + # and it's NOT already a .def file. Must figure out + # which of the given symbols are data symbols and tag + # them as such. So, trigger use of export_symbols_cmds. + # export_symbols gets reassigned inside the "prepare + # the list of exported symbols" if statement, so the + # include_expsyms logic still works. + orig_export_symbols=$export_symbols + export_symbols= + always_export_symbols=yes + } + fi + ;; + esac + + # Prepare the list of exported symbols + if test -z "$export_symbols"; then + if test yes = "$always_export_symbols" || test -n "$export_symbols_regex"; then + func_verbose "generating symbol list for '$libname.la'" + export_symbols=$output_objdir/$libname.exp + $opt_dry_run || $RM $export_symbols + cmds=$export_symbols_cmds + save_ifs=$IFS; IFS='~' + for cmd1 in $cmds; do + IFS=$save_ifs + # Take the normal branch if the nm_file_list_spec branch + # doesn't work or if tool conversion is not needed. + case $nm_file_list_spec~$to_tool_file_cmd in + *~func_convert_file_noop | *~func_convert_file_msys_to_w32 | ~*) + try_normal_branch=yes + eval cmd=\"$cmd1\" + func_len " $cmd" + len=$func_len_result + ;; + *) + try_normal_branch=no + ;; + esac + if test yes = "$try_normal_branch" \ + && { test "$len" -lt "$max_cmd_len" \ + || test "$max_cmd_len" -le -1; } + then + func_show_eval "$cmd" 'exit $?' + skipped_export=false + elif test -n "$nm_file_list_spec"; then + func_basename "$output" + output_la=$func_basename_result + save_libobjs=$libobjs + save_output=$output + output=$output_objdir/$output_la.nm + func_to_tool_file "$output" + libobjs=$nm_file_list_spec$func_to_tool_file_result + func_append delfiles " $output" + func_verbose "creating $NM input file list: $output" + for obj in $save_libobjs; do + func_to_tool_file "$obj" + $ECHO "$func_to_tool_file_result" + done > "$output" + eval cmd=\"$cmd1\" + func_show_eval "$cmd" 'exit $?' + output=$save_output + libobjs=$save_libobjs + skipped_export=false + else + # The command line is too long to execute in one step. + func_verbose "using reloadable object file for export list..." + skipped_export=: + # Break out early, otherwise skipped_export may be + # set to false by a later but shorter cmd. + break + fi + done + IFS=$save_ifs + if test -n "$export_symbols_regex" && test : != "$skipped_export"; then + func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"' + func_show_eval '$MV "${export_symbols}T" "$export_symbols"' + fi + fi + fi + + if test -n "$export_symbols" && test -n "$include_expsyms"; then + tmp_export_symbols=$export_symbols + test -n "$orig_export_symbols" && tmp_export_symbols=$orig_export_symbols + $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"' + fi + + if test : != "$skipped_export" && test -n "$orig_export_symbols"; then + # The given exports_symbols file has to be filtered, so filter it. + func_verbose "filter symbol list for '$libname.la' to tag DATA exports" + # FIXME: $output_objdir/$libname.filter potentially contains lots of + # 's' commands, which not all seds can handle. GNU sed should be fine + # though. Also, the filter scales superlinearly with the number of + # global variables. join(1) would be nice here, but unfortunately + # isn't a blessed tool. + $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter + func_append delfiles " $export_symbols $output_objdir/$libname.filter" + export_symbols=$output_objdir/$libname.def + $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols + fi + + tmp_deplibs= + for test_deplib in $deplibs; do + case " $convenience " in + *" $test_deplib "*) ;; + *) + func_append tmp_deplibs " $test_deplib" + ;; + esac + done + deplibs=$tmp_deplibs + + if test -n "$convenience"; then + if test -n "$whole_archive_flag_spec" && + test yes = "$compiler_needs_object" && + test -z "$libobjs"; then + # extract the archives, so we have objects to list. + # TODO: could optimize this to just extract one archive. + whole_archive_flag_spec= + fi + if test -n "$whole_archive_flag_spec"; then + save_libobjs=$libobjs + eval libobjs=\"\$libobjs $whole_archive_flag_spec\" + test "X$libobjs" = "X " && libobjs= + else + gentop=$output_objdir/${outputname}x + func_append generated " $gentop" + + func_extract_archives $gentop $convenience + func_append libobjs " $func_extract_archives_result" + test "X$libobjs" = "X " && libobjs= + fi + fi + + if test yes = "$thread_safe" && test -n "$thread_safe_flag_spec"; then + eval flag=\"$thread_safe_flag_spec\" + func_append linker_flags " $flag" + fi + + # Make a backup of the uninstalled library when relinking + if test relink = "$opt_mode"; then + $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}U && $MV $realname ${realname}U)' || exit $? + fi + + # Do each of the archive commands. + if test yes = "$module" && test -n "$module_cmds"; then + if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then + eval test_cmds=\"$module_expsym_cmds\" + cmds=$module_expsym_cmds + else + eval test_cmds=\"$module_cmds\" + cmds=$module_cmds + fi + else + if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then + eval test_cmds=\"$archive_expsym_cmds\" + cmds=$archive_expsym_cmds + else + eval test_cmds=\"$archive_cmds\" + cmds=$archive_cmds + fi + fi + + if test : != "$skipped_export" && + func_len " $test_cmds" && + len=$func_len_result && + test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then + : + else + # The command line is too long to link in one step, link piecewise + # or, if using GNU ld and skipped_export is not :, use a linker + # script. + + # Save the value of $output and $libobjs because we want to + # use them later. If we have whole_archive_flag_spec, we + # want to use save_libobjs as it was before + # whole_archive_flag_spec was expanded, because we can't + # assume the linker understands whole_archive_flag_spec. + # This may have to be revisited, in case too many + # convenience libraries get linked in and end up exceeding + # the spec. + if test -z "$convenience" || test -z "$whole_archive_flag_spec"; then + save_libobjs=$libobjs + fi + save_output=$output + func_basename "$output" + output_la=$func_basename_result + + # Clear the reloadable object creation command queue and + # initialize k to one. + test_cmds= + concat_cmds= + objlist= + last_robj= + k=1 + + if test -n "$save_libobjs" && test : != "$skipped_export" && test yes = "$with_gnu_ld"; then + output=$output_objdir/$output_la.lnkscript + func_verbose "creating GNU ld script: $output" + echo 'INPUT (' > $output + for obj in $save_libobjs + do + func_to_tool_file "$obj" + $ECHO "$func_to_tool_file_result" >> $output + done + echo ')' >> $output + func_append delfiles " $output" + func_to_tool_file "$output" + output=$func_to_tool_file_result + elif test -n "$save_libobjs" && test : != "$skipped_export" && test -n "$file_list_spec"; then + output=$output_objdir/$output_la.lnk + func_verbose "creating linker input file list: $output" + : > $output + set x $save_libobjs + shift + firstobj= + if test yes = "$compiler_needs_object"; then + firstobj="$1 " + shift + fi + for obj + do + func_to_tool_file "$obj" + $ECHO "$func_to_tool_file_result" >> $output + done + func_append delfiles " $output" + func_to_tool_file "$output" + output=$firstobj\"$file_list_spec$func_to_tool_file_result\" + else + if test -n "$save_libobjs"; then + func_verbose "creating reloadable object files..." + output=$output_objdir/$output_la-$k.$objext + eval test_cmds=\"$reload_cmds\" + func_len " $test_cmds" + len0=$func_len_result + len=$len0 + + # Loop over the list of objects to be linked. + for obj in $save_libobjs + do + func_len " $obj" + func_arith $len + $func_len_result + len=$func_arith_result + if test -z "$objlist" || + test "$len" -lt "$max_cmd_len"; then + func_append objlist " $obj" + else + # The command $test_cmds is almost too long, add a + # command to the queue. + if test 1 -eq "$k"; then + # The first file doesn't have a previous command to add. + reload_objs=$objlist + eval concat_cmds=\"$reload_cmds\" + else + # All subsequent reloadable object files will link in + # the last one created. + reload_objs="$objlist $last_robj" + eval concat_cmds=\"\$concat_cmds~$reload_cmds~\$RM $last_robj\" + fi + last_robj=$output_objdir/$output_la-$k.$objext + func_arith $k + 1 + k=$func_arith_result + output=$output_objdir/$output_la-$k.$objext + objlist=" $obj" + func_len " $last_robj" + func_arith $len0 + $func_len_result + len=$func_arith_result + fi + done + # Handle the remaining objects by creating one last + # reloadable object file. All subsequent reloadable object + # files will link in the last one created. + test -z "$concat_cmds" || concat_cmds=$concat_cmds~ + reload_objs="$objlist $last_robj" + eval concat_cmds=\"\$concat_cmds$reload_cmds\" + if test -n "$last_robj"; then + eval concat_cmds=\"\$concat_cmds~\$RM $last_robj\" + fi + func_append delfiles " $output" + + else + output= + fi + + ${skipped_export-false} && { + func_verbose "generating symbol list for '$libname.la'" + export_symbols=$output_objdir/$libname.exp + $opt_dry_run || $RM $export_symbols + libobjs=$output + # Append the command to create the export file. + test -z "$concat_cmds" || concat_cmds=$concat_cmds~ + eval concat_cmds=\"\$concat_cmds$export_symbols_cmds\" + if test -n "$last_robj"; then + eval concat_cmds=\"\$concat_cmds~\$RM $last_robj\" + fi + } + + test -n "$save_libobjs" && + func_verbose "creating a temporary reloadable object file: $output" + + # Loop through the commands generated above and execute them. + save_ifs=$IFS; IFS='~' + for cmd in $concat_cmds; do + IFS=$save_ifs + $opt_quiet || { + func_quote_for_expand "$cmd" + eval "func_echo $func_quote_for_expand_result" + } + $opt_dry_run || eval "$cmd" || { + lt_exit=$? + + # Restore the uninstalled library and exit + if test relink = "$opt_mode"; then + ( cd "$output_objdir" && \ + $RM "${realname}T" && \ + $MV "${realname}U" "$realname" ) + fi + + exit $lt_exit + } + done + IFS=$save_ifs + + if test -n "$export_symbols_regex" && ${skipped_export-false}; then + func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"' + func_show_eval '$MV "${export_symbols}T" "$export_symbols"' + fi + fi + + ${skipped_export-false} && { + if test -n "$export_symbols" && test -n "$include_expsyms"; then + tmp_export_symbols=$export_symbols + test -n "$orig_export_symbols" && tmp_export_symbols=$orig_export_symbols + $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"' + fi + + if test -n "$orig_export_symbols"; then + # The given exports_symbols file has to be filtered, so filter it. + func_verbose "filter symbol list for '$libname.la' to tag DATA exports" + # FIXME: $output_objdir/$libname.filter potentially contains lots of + # 's' commands, which not all seds can handle. GNU sed should be fine + # though. Also, the filter scales superlinearly with the number of + # global variables. join(1) would be nice here, but unfortunately + # isn't a blessed tool. + $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter + func_append delfiles " $export_symbols $output_objdir/$libname.filter" + export_symbols=$output_objdir/$libname.def + $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols + fi + } + + libobjs=$output + # Restore the value of output. + output=$save_output + + if test -n "$convenience" && test -n "$whole_archive_flag_spec"; then + eval libobjs=\"\$libobjs $whole_archive_flag_spec\" + test "X$libobjs" = "X " && libobjs= + fi + # Expand the library linking commands again to reset the + # value of $libobjs for piecewise linking. + + # Do each of the archive commands. + if test yes = "$module" && test -n "$module_cmds"; then + if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then + cmds=$module_expsym_cmds + else + cmds=$module_cmds + fi + else + if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then + cmds=$archive_expsym_cmds + else + cmds=$archive_cmds + fi + fi + fi + + if test -n "$delfiles"; then + # Append the command to remove temporary files to $cmds. + eval cmds=\"\$cmds~\$RM $delfiles\" + fi + + # Add any objects from preloaded convenience libraries + if test -n "$dlprefiles"; then + gentop=$output_objdir/${outputname}x + func_append generated " $gentop" + + func_extract_archives $gentop $dlprefiles + func_append libobjs " $func_extract_archives_result" + test "X$libobjs" = "X " && libobjs= + fi + + save_ifs=$IFS; IFS='~' + for cmd in $cmds; do + IFS=$sp$nl + eval cmd=\"$cmd\" + IFS=$save_ifs + $opt_quiet || { + func_quote_for_expand "$cmd" + eval "func_echo $func_quote_for_expand_result" + } + $opt_dry_run || eval "$cmd" || { + lt_exit=$? + + # Restore the uninstalled library and exit + if test relink = "$opt_mode"; then + ( cd "$output_objdir" && \ + $RM "${realname}T" && \ + $MV "${realname}U" "$realname" ) + fi + + exit $lt_exit + } + done + IFS=$save_ifs + + # Restore the uninstalled library and exit + if test relink = "$opt_mode"; then + $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}T && $MV $realname ${realname}T && $MV ${realname}U $realname)' || exit $? + + if test -n "$convenience"; then + if test -z "$whole_archive_flag_spec"; then + func_show_eval '${RM}r "$gentop"' + fi + fi + + exit $EXIT_SUCCESS + fi + + # Create links to the real library. + for linkname in $linknames; do + if test "$realname" != "$linkname"; then + func_show_eval '(cd "$output_objdir" && $RM "$linkname" && $LN_S "$realname" "$linkname")' 'exit $?' + fi + done + + # If -module or -export-dynamic was specified, set the dlname. + if test yes = "$module" || test yes = "$export_dynamic"; then + # On all known operating systems, these are identical. + dlname=$soname + fi + fi + ;; + + obj) + if test -n "$dlfiles$dlprefiles" || test no != "$dlself"; then + func_warning "'-dlopen' is ignored for objects" + fi + + case " $deplibs" in + *\ -l* | *\ -L*) + func_warning "'-l' and '-L' are ignored for objects" ;; + esac + + test -n "$rpath" && \ + func_warning "'-rpath' is ignored for objects" + + test -n "$xrpath" && \ + func_warning "'-R' is ignored for objects" + + test -n "$vinfo" && \ + func_warning "'-version-info' is ignored for objects" + + test -n "$release" && \ + func_warning "'-release' is ignored for objects" + + case $output in + *.lo) + test -n "$objs$old_deplibs" && \ + func_fatal_error "cannot build library object '$output' from non-libtool objects" + + libobj=$output + func_lo2o "$libobj" + obj=$func_lo2o_result + ;; + *) + libobj= + obj=$output + ;; + esac + + # Delete the old objects. + $opt_dry_run || $RM $obj $libobj + + # Objects from convenience libraries. This assumes + # single-version convenience libraries. Whenever we create + # different ones for PIC/non-PIC, this we'll have to duplicate + # the extraction. + reload_conv_objs= + gentop= + # if reload_cmds runs $LD directly, get rid of -Wl from + # whole_archive_flag_spec and hope we can get by with turning comma + # into space. + case $reload_cmds in + *\$LD[\ \$]*) wl= ;; + esac + if test -n "$convenience"; then + if test -n "$whole_archive_flag_spec"; then + eval tmp_whole_archive_flags=\"$whole_archive_flag_spec\" + test -n "$wl" || tmp_whole_archive_flags=`$ECHO "$tmp_whole_archive_flags" | $SED 's|,| |g'` + reload_conv_objs=$reload_objs\ $tmp_whole_archive_flags + else + gentop=$output_objdir/${obj}x + func_append generated " $gentop" + + func_extract_archives $gentop $convenience + reload_conv_objs="$reload_objs $func_extract_archives_result" + fi + fi + + # If we're not building shared, we need to use non_pic_objs + test yes = "$build_libtool_libs" || libobjs=$non_pic_objects + + # Create the old-style object. + reload_objs=$objs$old_deplibs' '`$ECHO "$libobjs" | $SP2NL | $SED "/\.$libext$/d; /\.lib$/d; $lo2o" | $NL2SP`' '$reload_conv_objs + + output=$obj + func_execute_cmds "$reload_cmds" 'exit $?' + + # Exit if we aren't doing a library object file. + if test -z "$libobj"; then + if test -n "$gentop"; then + func_show_eval '${RM}r "$gentop"' + fi + + exit $EXIT_SUCCESS + fi + + test yes = "$build_libtool_libs" || { + if test -n "$gentop"; then + func_show_eval '${RM}r "$gentop"' + fi + + # Create an invalid libtool object if no PIC, so that we don't + # accidentally link it into a program. + # $show "echo timestamp > $libobj" + # $opt_dry_run || eval "echo timestamp > $libobj" || exit $? + exit $EXIT_SUCCESS + } + + if test -n "$pic_flag" || test default != "$pic_mode"; then + # Only do commands if we really have different PIC objects. + reload_objs="$libobjs $reload_conv_objs" + output=$libobj + func_execute_cmds "$reload_cmds" 'exit $?' + fi + + if test -n "$gentop"; then + func_show_eval '${RM}r "$gentop"' + fi + + exit $EXIT_SUCCESS + ;; + + prog) + case $host in + *cygwin*) func_stripname '' '.exe' "$output" + output=$func_stripname_result.exe;; + esac + test -n "$vinfo" && \ + func_warning "'-version-info' is ignored for programs" + + test -n "$release" && \ + func_warning "'-release' is ignored for programs" + + $preload \ + && test unknown,unknown,unknown = "$dlopen_support,$dlopen_self,$dlopen_self_static" \ + && func_warning "'LT_INIT([dlopen])' not used. Assuming no dlopen support." + + case $host in + *-*-rhapsody* | *-*-darwin1.[012]) + # On Rhapsody replace the C library is the System framework + compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's/ -lc / System.ltframework /'` + finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's/ -lc / System.ltframework /'` + ;; + esac + + case $host in + *-*-darwin*) + # Don't allow lazy linking, it breaks C++ global constructors + # But is supposedly fixed on 10.4 or later (yay!). + if test CXX = "$tagname"; then + case ${MACOSX_DEPLOYMENT_TARGET-10.0} in + 10.[0123]) + func_append compile_command " $wl-bind_at_load" + func_append finalize_command " $wl-bind_at_load" + ;; + esac + fi + # Time to change all our "foo.ltframework" stuff back to "-framework foo" + compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` + finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` + ;; + esac + + + # move library search paths that coincide with paths to not yet + # installed libraries to the beginning of the library search list + new_libs= + for path in $notinst_path; do + case " $new_libs " in + *" -L$path/$objdir "*) ;; + *) + case " $compile_deplibs " in + *" -L$path/$objdir "*) + func_append new_libs " -L$path/$objdir" ;; + esac + ;; + esac + done + for deplib in $compile_deplibs; do + case $deplib in + -L*) + case " $new_libs " in + *" $deplib "*) ;; + *) func_append new_libs " $deplib" ;; + esac + ;; + *) func_append new_libs " $deplib" ;; + esac + done + compile_deplibs=$new_libs + + + func_append compile_command " $compile_deplibs" + func_append finalize_command " $finalize_deplibs" + + if test -n "$rpath$xrpath"; then + # If the user specified any rpath flags, then add them. + for libdir in $rpath $xrpath; do + # This is the magic to use -rpath. + case "$finalize_rpath " in + *" $libdir "*) ;; + *) func_append finalize_rpath " $libdir" ;; + esac + done + fi + + # Now hardcode the library paths + rpath= + hardcode_libdirs= + for libdir in $compile_rpath $finalize_rpath; do + if test -n "$hardcode_libdir_flag_spec"; then + if test -n "$hardcode_libdir_separator"; then + if test -z "$hardcode_libdirs"; then + hardcode_libdirs=$libdir + else + # Just accumulate the unique libdirs. + case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in + *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) + ;; + *) + func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" + ;; + esac + fi + else + eval flag=\"$hardcode_libdir_flag_spec\" + func_append rpath " $flag" + fi + elif test -n "$runpath_var"; then + case "$perm_rpath " in + *" $libdir "*) ;; + *) func_append perm_rpath " $libdir" ;; + esac + fi + case $host in + *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) + testbindir=`$ECHO "$libdir" | $SED -e 's*/lib$*/bin*'` + case :$dllsearchpath: in + *":$libdir:"*) ;; + ::) dllsearchpath=$libdir;; + *) func_append dllsearchpath ":$libdir";; + esac + case :$dllsearchpath: in + *":$testbindir:"*) ;; + ::) dllsearchpath=$testbindir;; + *) func_append dllsearchpath ":$testbindir";; + esac + ;; + esac + done + # Substitute the hardcoded libdirs into the rpath. + if test -n "$hardcode_libdir_separator" && + test -n "$hardcode_libdirs"; then + libdir=$hardcode_libdirs + eval rpath=\" $hardcode_libdir_flag_spec\" + fi + compile_rpath=$rpath + + rpath= + hardcode_libdirs= + for libdir in $finalize_rpath; do + if test -n "$hardcode_libdir_flag_spec"; then + if test -n "$hardcode_libdir_separator"; then + if test -z "$hardcode_libdirs"; then + hardcode_libdirs=$libdir + else + # Just accumulate the unique libdirs. + case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in + *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) + ;; + *) + func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" + ;; + esac + fi + else + eval flag=\"$hardcode_libdir_flag_spec\" + func_append rpath " $flag" + fi + elif test -n "$runpath_var"; then + case "$finalize_perm_rpath " in + *" $libdir "*) ;; + *) func_append finalize_perm_rpath " $libdir" ;; + esac + fi + done + # Substitute the hardcoded libdirs into the rpath. + if test -n "$hardcode_libdir_separator" && + test -n "$hardcode_libdirs"; then + libdir=$hardcode_libdirs + eval rpath=\" $hardcode_libdir_flag_spec\" + fi + finalize_rpath=$rpath + + if test -n "$libobjs" && test yes = "$build_old_libs"; then + # Transform all the library objects into standard objects. + compile_command=`$ECHO "$compile_command" | $SP2NL | $SED "$lo2o" | $NL2SP` + finalize_command=`$ECHO "$finalize_command" | $SP2NL | $SED "$lo2o" | $NL2SP` + fi + + func_generate_dlsyms "$outputname" "@PROGRAM@" false + + # template prelinking step + if test -n "$prelink_cmds"; then + func_execute_cmds "$prelink_cmds" 'exit $?' + fi + + wrappers_required=: + case $host in + *cegcc* | *mingw32ce*) + # Disable wrappers for cegcc and mingw32ce hosts, we are cross compiling anyway. + wrappers_required=false + ;; + *cygwin* | *mingw* ) + test yes = "$build_libtool_libs" || wrappers_required=false + ;; + *) + if test no = "$need_relink" || test yes != "$build_libtool_libs"; then + wrappers_required=false + fi + ;; + esac + $wrappers_required || { + # Replace the output file specification. + compile_command=`$ECHO "$compile_command" | $SED 's%@OUTPUT@%'"$output"'%g'` + link_command=$compile_command$compile_rpath + + # We have no uninstalled library dependencies, so finalize right now. + exit_status=0 + func_show_eval "$link_command" 'exit_status=$?' + + if test -n "$postlink_cmds"; then + func_to_tool_file "$output" + postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` + func_execute_cmds "$postlink_cmds" 'exit $?' + fi + + # Delete the generated files. + if test -f "$output_objdir/${outputname}S.$objext"; then + func_show_eval '$RM "$output_objdir/${outputname}S.$objext"' + fi + + exit $exit_status + } + + if test -n "$compile_shlibpath$finalize_shlibpath"; then + compile_command="$shlibpath_var=\"$compile_shlibpath$finalize_shlibpath\$$shlibpath_var\" $compile_command" + fi + if test -n "$finalize_shlibpath"; then + finalize_command="$shlibpath_var=\"$finalize_shlibpath\$$shlibpath_var\" $finalize_command" + fi + + compile_var= + finalize_var= + if test -n "$runpath_var"; then + if test -n "$perm_rpath"; then + # We should set the runpath_var. + rpath= + for dir in $perm_rpath; do + func_append rpath "$dir:" + done + compile_var="$runpath_var=\"$rpath\$$runpath_var\" " + fi + if test -n "$finalize_perm_rpath"; then + # We should set the runpath_var. + rpath= + for dir in $finalize_perm_rpath; do + func_append rpath "$dir:" + done + finalize_var="$runpath_var=\"$rpath\$$runpath_var\" " + fi + fi + + if test yes = "$no_install"; then + # We don't need to create a wrapper script. + link_command=$compile_var$compile_command$compile_rpath + # Replace the output file specification. + link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output"'%g'` + # Delete the old output file. + $opt_dry_run || $RM $output + # Link the executable and exit + func_show_eval "$link_command" 'exit $?' + + if test -n "$postlink_cmds"; then + func_to_tool_file "$output" + postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` + func_execute_cmds "$postlink_cmds" 'exit $?' + fi + + exit $EXIT_SUCCESS + fi + + case $hardcode_action,$fast_install in + relink,*) + # Fast installation is not supported + link_command=$compile_var$compile_command$compile_rpath + relink_command=$finalize_var$finalize_command$finalize_rpath + + func_warning "this platform does not like uninstalled shared libraries" + func_warning "'$output' will be relinked during installation" + ;; + *,yes) + link_command=$finalize_var$compile_command$finalize_rpath + relink_command=`$ECHO "$compile_var$compile_command$compile_rpath" | $SED 's%@OUTPUT@%\$progdir/\$file%g'` + ;; + *,no) + link_command=$compile_var$compile_command$compile_rpath + relink_command=$finalize_var$finalize_command$finalize_rpath + ;; + *,needless) + link_command=$finalize_var$compile_command$finalize_rpath + relink_command= + ;; + esac + + # Replace the output file specification. + link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output_objdir/$outputname"'%g'` + + # Delete the old output files. + $opt_dry_run || $RM $output $output_objdir/$outputname $output_objdir/lt-$outputname + + func_show_eval "$link_command" 'exit $?' + + if test -n "$postlink_cmds"; then + func_to_tool_file "$output_objdir/$outputname" + postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output_objdir/$outputname"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` + func_execute_cmds "$postlink_cmds" 'exit $?' + fi + + # Now create the wrapper script. + func_verbose "creating $output" + + # Quote the relink command for shipping. + if test -n "$relink_command"; then + # Preserve any variables that may affect compiler behavior + for var in $variables_saved_for_relink; do + if eval test -z \"\${$var+set}\"; then + relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command" + elif eval var_value=\$$var; test -z "$var_value"; then + relink_command="$var=; export $var; $relink_command" + else + func_quote_for_eval "$var_value" + relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command" + fi + done + relink_command="(cd `pwd`; $relink_command)" + relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"` + fi + + # Only actually do things if not in dry run mode. + $opt_dry_run || { + # win32 will think the script is a binary if it has + # a .exe suffix, so we strip it off here. + case $output in + *.exe) func_stripname '' '.exe' "$output" + output=$func_stripname_result ;; + esac + # test for cygwin because mv fails w/o .exe extensions + case $host in + *cygwin*) + exeext=.exe + func_stripname '' '.exe' "$outputname" + outputname=$func_stripname_result ;; + *) exeext= ;; + esac + case $host in + *cygwin* | *mingw* ) + func_dirname_and_basename "$output" "" "." + output_name=$func_basename_result + output_path=$func_dirname_result + cwrappersource=$output_path/$objdir/lt-$output_name.c + cwrapper=$output_path/$output_name.exe + $RM $cwrappersource $cwrapper + trap "$RM $cwrappersource $cwrapper; exit $EXIT_FAILURE" 1 2 15 + + func_emit_cwrapperexe_src > $cwrappersource + + # The wrapper executable is built using the $host compiler, + # because it contains $host paths and files. If cross- + # compiling, it, like the target executable, must be + # executed on the $host or under an emulation environment. + $opt_dry_run || { + $LTCC $LTCFLAGS -o $cwrapper $cwrappersource + $STRIP $cwrapper + } + + # Now, create the wrapper script for func_source use: + func_ltwrapper_scriptname $cwrapper + $RM $func_ltwrapper_scriptname_result + trap "$RM $func_ltwrapper_scriptname_result; exit $EXIT_FAILURE" 1 2 15 + $opt_dry_run || { + # note: this script will not be executed, so do not chmod. + if test "x$build" = "x$host"; then + $cwrapper --lt-dump-script > $func_ltwrapper_scriptname_result + else + func_emit_wrapper no > $func_ltwrapper_scriptname_result + fi + } + ;; + * ) + $RM $output + trap "$RM $output; exit $EXIT_FAILURE" 1 2 15 + + func_emit_wrapper no > $output + chmod +x $output + ;; + esac + } + exit $EXIT_SUCCESS + ;; + esac + + # See if we need to build an old-fashioned archive. + for oldlib in $oldlibs; do + + case $build_libtool_libs in + convenience) + oldobjs="$libobjs_save $symfileobj" + addlibs=$convenience + build_libtool_libs=no + ;; + module) + oldobjs=$libobjs_save + addlibs=$old_convenience + build_libtool_libs=no + ;; + *) + oldobjs="$old_deplibs $non_pic_objects" + $preload && test -f "$symfileobj" \ + && func_append oldobjs " $symfileobj" + addlibs=$old_convenience + ;; + esac + + if test -n "$addlibs"; then + gentop=$output_objdir/${outputname}x + func_append generated " $gentop" + + func_extract_archives $gentop $addlibs + func_append oldobjs " $func_extract_archives_result" + fi + + # Do each command in the archive commands. + if test -n "$old_archive_from_new_cmds" && test yes = "$build_libtool_libs"; then + cmds=$old_archive_from_new_cmds + else + + # Add any objects from preloaded convenience libraries + if test -n "$dlprefiles"; then + gentop=$output_objdir/${outputname}x + func_append generated " $gentop" + + func_extract_archives $gentop $dlprefiles + func_append oldobjs " $func_extract_archives_result" + fi + + # POSIX demands no paths to be encoded in archives. We have + # to avoid creating archives with duplicate basenames if we + # might have to extract them afterwards, e.g., when creating a + # static archive out of a convenience library, or when linking + # the entirety of a libtool archive into another (currently + # not supported by libtool). + if (for obj in $oldobjs + do + func_basename "$obj" + $ECHO "$func_basename_result" + done | sort | sort -uc >/dev/null 2>&1); then + : + else + echo "copying selected object files to avoid basename conflicts..." + gentop=$output_objdir/${outputname}x + func_append generated " $gentop" + func_mkdir_p "$gentop" + save_oldobjs=$oldobjs + oldobjs= + counter=1 + for obj in $save_oldobjs + do + func_basename "$obj" + objbase=$func_basename_result + case " $oldobjs " in + " ") oldobjs=$obj ;; + *[\ /]"$objbase "*) + while :; do + # Make sure we don't pick an alternate name that also + # overlaps. + newobj=lt$counter-$objbase + func_arith $counter + 1 + counter=$func_arith_result + case " $oldobjs " in + *[\ /]"$newobj "*) ;; + *) if test ! -f "$gentop/$newobj"; then break; fi ;; + esac + done + func_show_eval "ln $obj $gentop/$newobj || cp $obj $gentop/$newobj" + func_append oldobjs " $gentop/$newobj" + ;; + *) func_append oldobjs " $obj" ;; + esac + done + fi + func_to_tool_file "$oldlib" func_convert_file_msys_to_w32 + tool_oldlib=$func_to_tool_file_result + eval cmds=\"$old_archive_cmds\" + + func_len " $cmds" + len=$func_len_result + if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then + cmds=$old_archive_cmds + elif test -n "$archiver_list_spec"; then + func_verbose "using command file archive linking..." + for obj in $oldobjs + do + func_to_tool_file "$obj" + $ECHO "$func_to_tool_file_result" + done > $output_objdir/$libname.libcmd + func_to_tool_file "$output_objdir/$libname.libcmd" + oldobjs=" $archiver_list_spec$func_to_tool_file_result" + cmds=$old_archive_cmds + else + # the command line is too long to link in one step, link in parts + func_verbose "using piecewise archive linking..." + save_RANLIB=$RANLIB + RANLIB=: + objlist= + concat_cmds= + save_oldobjs=$oldobjs + oldobjs= + # Is there a better way of finding the last object in the list? + for obj in $save_oldobjs + do + last_oldobj=$obj + done + eval test_cmds=\"$old_archive_cmds\" + func_len " $test_cmds" + len0=$func_len_result + len=$len0 + for obj in $save_oldobjs + do + func_len " $obj" + func_arith $len + $func_len_result + len=$func_arith_result + func_append objlist " $obj" + if test "$len" -lt "$max_cmd_len"; then + : + else + # the above command should be used before it gets too long + oldobjs=$objlist + if test "$obj" = "$last_oldobj"; then + RANLIB=$save_RANLIB + fi + test -z "$concat_cmds" || concat_cmds=$concat_cmds~ + eval concat_cmds=\"\$concat_cmds$old_archive_cmds\" + objlist= + len=$len0 + fi + done + RANLIB=$save_RANLIB + oldobjs=$objlist + if test -z "$oldobjs"; then + eval cmds=\"\$concat_cmds\" + else + eval cmds=\"\$concat_cmds~\$old_archive_cmds\" + fi + fi + fi + func_execute_cmds "$cmds" 'exit $?' + done + + test -n "$generated" && \ + func_show_eval "${RM}r$generated" + + # Now create the libtool archive. + case $output in + *.la) + old_library= + test yes = "$build_old_libs" && old_library=$libname.$libext + func_verbose "creating $output" + + # Preserve any variables that may affect compiler behavior + for var in $variables_saved_for_relink; do + if eval test -z \"\${$var+set}\"; then + relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command" + elif eval var_value=\$$var; test -z "$var_value"; then + relink_command="$var=; export $var; $relink_command" + else + func_quote_for_eval "$var_value" + relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command" + fi + done + # Quote the link command for shipping. + relink_command="(cd `pwd`; $SHELL \"$progpath\" $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)" + relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"` + if test yes = "$hardcode_automatic"; then + relink_command= + fi + + # Only create the output if not a dry run. + $opt_dry_run || { + for installed in no yes; do + if test yes = "$installed"; then + if test -z "$install_libdir"; then + break + fi + output=$output_objdir/${outputname}i + # Replace all uninstalled libtool libraries with the installed ones + newdependency_libs= + for deplib in $dependency_libs; do + case $deplib in + *.la) + func_basename "$deplib" + name=$func_basename_result + func_resolve_sysroot "$deplib" + eval libdir=`$SED -n -e 's/^libdir=\(.*\)$/\1/p' $func_resolve_sysroot_result` + test -z "$libdir" && \ + func_fatal_error "'$deplib' is not a valid libtool archive" + func_append newdependency_libs " ${lt_sysroot:+=}$libdir/$name" + ;; + -L*) + func_stripname -L '' "$deplib" + func_replace_sysroot "$func_stripname_result" + func_append newdependency_libs " -L$func_replace_sysroot_result" + ;; + -R*) + func_stripname -R '' "$deplib" + func_replace_sysroot "$func_stripname_result" + func_append newdependency_libs " -R$func_replace_sysroot_result" + ;; + *) func_append newdependency_libs " $deplib" ;; + esac + done + dependency_libs=$newdependency_libs + newdlfiles= + + for lib in $dlfiles; do + case $lib in + *.la) + func_basename "$lib" + name=$func_basename_result + eval libdir=`$SED -n -e 's/^libdir=\(.*\)$/\1/p' $lib` + test -z "$libdir" && \ + func_fatal_error "'$lib' is not a valid libtool archive" + func_append newdlfiles " ${lt_sysroot:+=}$libdir/$name" + ;; + *) func_append newdlfiles " $lib" ;; + esac + done + dlfiles=$newdlfiles + newdlprefiles= + for lib in $dlprefiles; do + case $lib in + *.la) + # Only pass preopened files to the pseudo-archive (for + # eventual linking with the app. that links it) if we + # didn't already link the preopened objects directly into + # the library: + func_basename "$lib" + name=$func_basename_result + eval libdir=`$SED -n -e 's/^libdir=\(.*\)$/\1/p' $lib` + test -z "$libdir" && \ + func_fatal_error "'$lib' is not a valid libtool archive" + func_append newdlprefiles " ${lt_sysroot:+=}$libdir/$name" + ;; + esac + done + dlprefiles=$newdlprefiles + else + newdlfiles= + for lib in $dlfiles; do + case $lib in + [\\/]* | [A-Za-z]:[\\/]*) abs=$lib ;; + *) abs=`pwd`"/$lib" ;; + esac + func_append newdlfiles " $abs" + done + dlfiles=$newdlfiles + newdlprefiles= + for lib in $dlprefiles; do + case $lib in + [\\/]* | [A-Za-z]:[\\/]*) abs=$lib ;; + *) abs=`pwd`"/$lib" ;; + esac + func_append newdlprefiles " $abs" + done + dlprefiles=$newdlprefiles + fi + $RM $output + # place dlname in correct position for cygwin + # In fact, it would be nice if we could use this code for all target + # systems that can't hard-code library paths into their executables + # and that have no shared library path variable independent of PATH, + # but it turns out we can't easily determine that from inspecting + # libtool variables, so we have to hard-code the OSs to which it + # applies here; at the moment, that means platforms that use the PE + # object format with DLL files. See the long comment at the top of + # tests/bindir.at for full details. + tdlname=$dlname + case $host,$output,$installed,$module,$dlname in + *cygwin*,*lai,yes,no,*.dll | *mingw*,*lai,yes,no,*.dll | *cegcc*,*lai,yes,no,*.dll) + # If a -bindir argument was supplied, place the dll there. + if test -n "$bindir"; then + func_relative_path "$install_libdir" "$bindir" + tdlname=$func_relative_path_result/$dlname + else + # Otherwise fall back on heuristic. + tdlname=../bin/$dlname + fi + ;; + esac + $ECHO > $output "\ +# $outputname - a libtool library file +# Generated by $PROGRAM (GNU $PACKAGE) $VERSION +# +# Please DO NOT delete this file! +# It is necessary for linking the library. + +# The name that we can dlopen(3). +dlname='$tdlname' + +# Names of this library. +library_names='$library_names' + +# The name of the static archive. +old_library='$old_library' + +# Linker flags that cannot go in dependency_libs. +inherited_linker_flags='$new_inherited_linker_flags' + +# Libraries that this one depends upon. +dependency_libs='$dependency_libs' + +# Names of additional weak libraries provided by this library +weak_library_names='$weak_libs' + +# Version information for $libname. +current=$current +age=$age +revision=$revision + +# Is this an already installed library? +installed=$installed + +# Should we warn about portability when linking against -modules? +shouldnotlink=$module + +# Files to dlopen/dlpreopen +dlopen='$dlfiles' +dlpreopen='$dlprefiles' + +# Directory that this library needs to be installed in: +libdir='$install_libdir'" + if test no,yes = "$installed,$need_relink"; then + $ECHO >> $output "\ +relink_command=\"$relink_command\"" + fi + done + } + + # Do a symbolic link so that the libtool archive can be found in + # LD_LIBRARY_PATH before the program is installed. + func_show_eval '( cd "$output_objdir" && $RM "$outputname" && $LN_S "../$outputname" "$outputname" )' 'exit $?' + ;; + esac + exit $EXIT_SUCCESS +} + +if test link = "$opt_mode" || test relink = "$opt_mode"; then + func_mode_link ${1+"$@"} +fi + + +# func_mode_uninstall arg... +func_mode_uninstall () +{ + $debug_cmd + + RM=$nonopt + files= + rmforce=false + exit_status=0 + + # This variable tells wrapper scripts just to set variables rather + # than running their programs. + libtool_install_magic=$magic + + for arg + do + case $arg in + -f) func_append RM " $arg"; rmforce=: ;; + -*) func_append RM " $arg" ;; + *) func_append files " $arg" ;; + esac + done + + test -z "$RM" && \ + func_fatal_help "you must specify an RM program" + + rmdirs= + + for file in $files; do + func_dirname "$file" "" "." + dir=$func_dirname_result + if test . = "$dir"; then + odir=$objdir + else + odir=$dir/$objdir + fi + func_basename "$file" + name=$func_basename_result + test uninstall = "$opt_mode" && odir=$dir + + # Remember odir for removal later, being careful to avoid duplicates + if test clean = "$opt_mode"; then + case " $rmdirs " in + *" $odir "*) ;; + *) func_append rmdirs " $odir" ;; + esac + fi + + # Don't error if the file doesn't exist and rm -f was used. + if { test -L "$file"; } >/dev/null 2>&1 || + { test -h "$file"; } >/dev/null 2>&1 || + test -f "$file"; then + : + elif test -d "$file"; then + exit_status=1 + continue + elif $rmforce; then + continue + fi + + rmfiles=$file + + case $name in + *.la) + # Possibly a libtool archive, so verify it. + if func_lalib_p "$file"; then + func_source $dir/$name + + # Delete the libtool libraries and symlinks. + for n in $library_names; do + func_append rmfiles " $odir/$n" + done + test -n "$old_library" && func_append rmfiles " $odir/$old_library" + + case $opt_mode in + clean) + case " $library_names " in + *" $dlname "*) ;; + *) test -n "$dlname" && func_append rmfiles " $odir/$dlname" ;; + esac + test -n "$libdir" && func_append rmfiles " $odir/$name $odir/${name}i" + ;; + uninstall) + if test -n "$library_names"; then + # Do each command in the postuninstall commands. + func_execute_cmds "$postuninstall_cmds" '$rmforce || exit_status=1' + fi + + if test -n "$old_library"; then + # Do each command in the old_postuninstall commands. + func_execute_cmds "$old_postuninstall_cmds" '$rmforce || exit_status=1' + fi + # FIXME: should reinstall the best remaining shared library. + ;; + esac + fi + ;; + + *.lo) + # Possibly a libtool object, so verify it. + if func_lalib_p "$file"; then + + # Read the .lo file + func_source $dir/$name + + # Add PIC object to the list of files to remove. + if test -n "$pic_object" && test none != "$pic_object"; then + func_append rmfiles " $dir/$pic_object" + fi + + # Add non-PIC object to the list of files to remove. + if test -n "$non_pic_object" && test none != "$non_pic_object"; then + func_append rmfiles " $dir/$non_pic_object" + fi + fi + ;; + + *) + if test clean = "$opt_mode"; then + noexename=$name + case $file in + *.exe) + func_stripname '' '.exe' "$file" + file=$func_stripname_result + func_stripname '' '.exe' "$name" + noexename=$func_stripname_result + # $file with .exe has already been added to rmfiles, + # add $file without .exe + func_append rmfiles " $file" + ;; + esac + # Do a test to see if this is a libtool program. + if func_ltwrapper_p "$file"; then + if func_ltwrapper_executable_p "$file"; then + func_ltwrapper_scriptname "$file" + relink_command= + func_source $func_ltwrapper_scriptname_result + func_append rmfiles " $func_ltwrapper_scriptname_result" + else + relink_command= + func_source $dir/$noexename + fi + + # note $name still contains .exe if it was in $file originally + # as does the version of $file that was added into $rmfiles + func_append rmfiles " $odir/$name $odir/${name}S.$objext" + if test yes = "$fast_install" && test -n "$relink_command"; then + func_append rmfiles " $odir/lt-$name" + fi + if test "X$noexename" != "X$name"; then + func_append rmfiles " $odir/lt-$noexename.c" + fi + fi + fi + ;; + esac + func_show_eval "$RM $rmfiles" 'exit_status=1' + done + + # Try to remove the $objdir's in the directories where we deleted files + for dir in $rmdirs; do + if test -d "$dir"; then + func_show_eval "rmdir $dir >/dev/null 2>&1" + fi + done + + exit $exit_status +} + +if test uninstall = "$opt_mode" || test clean = "$opt_mode"; then + func_mode_uninstall ${1+"$@"} +fi + +test -z "$opt_mode" && { + help=$generic_help + func_fatal_help "you must specify a MODE" +} + +test -z "$exec_cmd" && \ + func_fatal_help "invalid operation mode '$opt_mode'" + +if test -n "$exec_cmd"; then + eval exec "$exec_cmd" + exit $EXIT_FAILURE +fi + +exit $exit_status + + +# The TAGs below are defined such that we never get into a situation +# where we disable both kinds of libraries. Given conflicting +# choices, we go for a static library, that is the most portable, +# since we can't tell whether shared libraries were disabled because +# the user asked for that or because the platform doesn't support +# them. This is particularly important on AIX, because we don't +# support having both static and shared libraries enabled at the same +# time on that platform, so we default to a shared-only configuration. +# If a disable-shared tag is given, we'll fallback to a static-only +# configuration. But we'll never go from static-only to shared-only. + +# ### BEGIN LIBTOOL TAG CONFIG: disable-shared +build_libtool_libs=no +build_old_libs=yes +# ### END LIBTOOL TAG CONFIG: disable-shared + +# ### BEGIN LIBTOOL TAG CONFIG: disable-static +build_old_libs=`case $build_libtool_libs in yes) echo no;; *) echo yes;; esac` +# ### END LIBTOOL TAG CONFIG: disable-static + +# Local Variables: +# mode:shell-script +# sh-indentation:2 +# End: diff --git a/m4/gc_set_version.m4 b/m4/gc_set_version.m4 new file mode 100644 index 0000000..465e4f0 --- /dev/null +++ b/m4/gc_set_version.m4 @@ -0,0 +1,40 @@ +# +# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +# OR IMPLIED. ANY USE IS AT YOUR OWN RISK. +# +# Permission is hereby granted to use or copy this program +# for any purpose, provided the above notices are retained on all copies. +# Permission to modify the code and to distribute modified code is granted, +# provided the above notices are retained, and a notice that the code was +# modified is included with the above copyright notice. + +# GC_SET_VERSION +# sets and AC_DEFINEs GC_VERSION_MAJOR, GC_VERSION_MINOR and GC_VERSION_MICRO +# based on the contents of PACKAGE_VERSION; PACKAGE_VERSION must conform to +# [0-9]+[.][0-9]+[.][0-9]+ +# +AC_DEFUN([GC_SET_VERSION], [ + AC_MSG_CHECKING(GC version numbers) + GC_VERSION_MAJOR=`echo $PACKAGE_VERSION | sed 's/^\([[0-9]][[0-9]]*\)[[.]].*$/\1/g'` + GC_VERSION_MINOR=`echo $PACKAGE_VERSION | sed 's/^[[^.]]*[[.]]\([[0-9]][[0-9]]*\).*$/\1/g'` + GC_VERSION_MICRO=`echo $PACKAGE_VERSION | sed 's/^[[^.]]*[[.]][[^.]]*[[.]]\([[0-9]][[0-9]]*\)$/\1/g'` + + if test :$GC_VERSION_MAJOR: = :: \ + -o :$GC_VERSION_MINOR: = :: \ + -o :$GC_VERSION_MICRO: = :: ; + then + AC_MSG_RESULT(invalid) + AC_MSG_ERROR([nonconforming PACKAGE_VERSION='$PACKAGE_VERSION']) + fi + + AC_DEFINE_UNQUOTED([GC_VERSION_MAJOR], $GC_VERSION_MAJOR, + [The major version number of this GC release.]) + AC_DEFINE_UNQUOTED([GC_VERSION_MINOR], $GC_VERSION_MINOR, + [The minor version number of this GC release.]) + AC_DEFINE_UNQUOTED([GC_VERSION_MICRO], $GC_VERSION_MICRO, + [The micro version number of this GC release.]) + AC_MSG_RESULT(major=$GC_VERSION_MAJOR minor=$GC_VERSION_MINOR \ + micro=$GC_VERSION_MICRO) +]) + +sinclude(libtool.m4) diff --git a/m4/libtool.m4 b/m4/libtool.m4 new file mode 100644 index 0000000..a3bc337 --- /dev/null +++ b/m4/libtool.m4 @@ -0,0 +1,8369 @@ +# libtool.m4 - Configure libtool for the host system. -*-Autoconf-*- +# +# Copyright (C) 1996-2001, 2003-2015 Free Software Foundation, Inc. +# Written by Gordon Matzigkeit, 1996 +# +# This file is free software; the Free Software Foundation gives +# unlimited permission to copy and/or distribute it, with or without +# modifications, as long as this notice is preserved. + +m4_define([_LT_COPYING], [dnl +# Copyright (C) 2014 Free Software Foundation, Inc. +# This is free software; see the source for copying conditions. There is NO +# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + +# GNU Libtool is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of of the License, or +# (at your option) any later version. +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program or library that is built +# using GNU Libtool, you may include this file under the same +# distribution terms that you use for the rest of that program. +# +# GNU Libtool is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . +]) + +# serial 58 LT_INIT + + +# LT_PREREQ(VERSION) +# ------------------ +# Complain and exit if this libtool version is less that VERSION. +m4_defun([LT_PREREQ], +[m4_if(m4_version_compare(m4_defn([LT_PACKAGE_VERSION]), [$1]), -1, + [m4_default([$3], + [m4_fatal([Libtool version $1 or higher is required], + 63)])], + [$2])]) + + +# _LT_CHECK_BUILDDIR +# ------------------ +# Complain if the absolute build directory name contains unusual characters +m4_defun([_LT_CHECK_BUILDDIR], +[case `pwd` in + *\ * | *\ *) + AC_MSG_WARN([Libtool does not cope well with whitespace in `pwd`]) ;; +esac +]) + + +# LT_INIT([OPTIONS]) +# ------------------ +AC_DEFUN([LT_INIT], +[AC_PREREQ([2.62])dnl We use AC_PATH_PROGS_FEATURE_CHECK +AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl +AC_BEFORE([$0], [LT_LANG])dnl +AC_BEFORE([$0], [LT_OUTPUT])dnl +AC_BEFORE([$0], [LTDL_INIT])dnl +m4_require([_LT_CHECK_BUILDDIR])dnl + +dnl Autoconf doesn't catch unexpanded LT_ macros by default: +m4_pattern_forbid([^_?LT_[A-Z_]+$])dnl +m4_pattern_allow([^(_LT_EOF|LT_DLGLOBAL|LT_DLLAZY_OR_NOW|LT_MULTI_MODULE)$])dnl +dnl aclocal doesn't pull ltoptions.m4, ltsugar.m4, or ltversion.m4 +dnl unless we require an AC_DEFUNed macro: +AC_REQUIRE([LTOPTIONS_VERSION])dnl +AC_REQUIRE([LTSUGAR_VERSION])dnl +AC_REQUIRE([LTVERSION_VERSION])dnl +AC_REQUIRE([LTOBSOLETE_VERSION])dnl +m4_require([_LT_PROG_LTMAIN])dnl + +_LT_SHELL_INIT([SHELL=${CONFIG_SHELL-/bin/sh}]) + +dnl Parse OPTIONS +_LT_SET_OPTIONS([$0], [$1]) + +# This can be used to rebuild libtool when needed +LIBTOOL_DEPS=$ltmain + +# Always use our own libtool. +LIBTOOL='$(SHELL) $(top_builddir)/libtool' +AC_SUBST(LIBTOOL)dnl + +_LT_SETUP + +# Only expand once: +m4_define([LT_INIT]) +])# LT_INIT + +# Old names: +AU_ALIAS([AC_PROG_LIBTOOL], [LT_INIT]) +AU_ALIAS([AM_PROG_LIBTOOL], [LT_INIT]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_PROG_LIBTOOL], []) +dnl AC_DEFUN([AM_PROG_LIBTOOL], []) + + +# _LT_PREPARE_CC_BASENAME +# ----------------------- +m4_defun([_LT_PREPARE_CC_BASENAME], [ +# Calculate cc_basename. Skip known compiler wrappers and cross-prefix. +func_cc_basename () +{ + for cc_temp in @S|@*""; do + case $cc_temp in + compile | *[[\\/]]compile | ccache | *[[\\/]]ccache ) ;; + distcc | *[[\\/]]distcc | purify | *[[\\/]]purify ) ;; + \-*) ;; + *) break;; + esac + done + func_cc_basename_result=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"` +} +])# _LT_PREPARE_CC_BASENAME + + +# _LT_CC_BASENAME(CC) +# ------------------- +# It would be clearer to call AC_REQUIREs from _LT_PREPARE_CC_BASENAME, +# but that macro is also expanded into generated libtool script, which +# arranges for $SED and $ECHO to be set by different means. +m4_defun([_LT_CC_BASENAME], +[m4_require([_LT_PREPARE_CC_BASENAME])dnl +AC_REQUIRE([_LT_DECL_SED])dnl +AC_REQUIRE([_LT_PROG_ECHO_BACKSLASH])dnl +func_cc_basename $1 +cc_basename=$func_cc_basename_result +]) + + +# _LT_FILEUTILS_DEFAULTS +# ---------------------- +# It is okay to use these file commands and assume they have been set +# sensibly after 'm4_require([_LT_FILEUTILS_DEFAULTS])'. +m4_defun([_LT_FILEUTILS_DEFAULTS], +[: ${CP="cp -f"} +: ${MV="mv -f"} +: ${RM="rm -f"} +])# _LT_FILEUTILS_DEFAULTS + + +# _LT_SETUP +# --------- +m4_defun([_LT_SETUP], +[AC_REQUIRE([AC_CANONICAL_HOST])dnl +AC_REQUIRE([AC_CANONICAL_BUILD])dnl +AC_REQUIRE([_LT_PREPARE_SED_QUOTE_VARS])dnl +AC_REQUIRE([_LT_PROG_ECHO_BACKSLASH])dnl + +_LT_DECL([], [PATH_SEPARATOR], [1], [The PATH separator for the build system])dnl +dnl +_LT_DECL([], [host_alias], [0], [The host system])dnl +_LT_DECL([], [host], [0])dnl +_LT_DECL([], [host_os], [0])dnl +dnl +_LT_DECL([], [build_alias], [0], [The build system])dnl +_LT_DECL([], [build], [0])dnl +_LT_DECL([], [build_os], [0])dnl +dnl +AC_REQUIRE([AC_PROG_CC])dnl +AC_REQUIRE([LT_PATH_LD])dnl +AC_REQUIRE([LT_PATH_NM])dnl +dnl +AC_REQUIRE([AC_PROG_LN_S])dnl +test -z "$LN_S" && LN_S="ln -s" +_LT_DECL([], [LN_S], [1], [Whether we need soft or hard links])dnl +dnl +AC_REQUIRE([LT_CMD_MAX_LEN])dnl +_LT_DECL([objext], [ac_objext], [0], [Object file suffix (normally "o")])dnl +_LT_DECL([], [exeext], [0], [Executable file suffix (normally "")])dnl +dnl +m4_require([_LT_FILEUTILS_DEFAULTS])dnl +m4_require([_LT_CHECK_SHELL_FEATURES])dnl +m4_require([_LT_PATH_CONVERSION_FUNCTIONS])dnl +m4_require([_LT_CMD_RELOAD])dnl +m4_require([_LT_CHECK_MAGIC_METHOD])dnl +m4_require([_LT_CHECK_SHAREDLIB_FROM_LINKLIB])dnl +m4_require([_LT_CMD_OLD_ARCHIVE])dnl +m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl +m4_require([_LT_WITH_SYSROOT])dnl +m4_require([_LT_CMD_TRUNCATE])dnl + +_LT_CONFIG_LIBTOOL_INIT([ +# See if we are running on zsh, and set the options that allow our +# commands through without removal of \ escapes INIT. +if test -n "\${ZSH_VERSION+set}"; then + setopt NO_GLOB_SUBST +fi +]) +if test -n "${ZSH_VERSION+set}"; then + setopt NO_GLOB_SUBST +fi + +_LT_CHECK_OBJDIR + +m4_require([_LT_TAG_COMPILER])dnl + +case $host_os in +aix3*) + # AIX sometimes has problems with the GCC collect2 program. For some + # reason, if we set the COLLECT_NAMES environment variable, the problems + # vanish in a puff of smoke. + if test set != "${COLLECT_NAMES+set}"; then + COLLECT_NAMES= + export COLLECT_NAMES + fi + ;; +esac + +# Global variables: +ofile=libtool +can_build_shared=yes + +# All known linkers require a '.a' archive for static linking (except MSVC, +# which needs '.lib'). +libext=a + +with_gnu_ld=$lt_cv_prog_gnu_ld + +old_CC=$CC +old_CFLAGS=$CFLAGS + +# Set sane defaults for various variables +test -z "$CC" && CC=cc +test -z "$LTCC" && LTCC=$CC +test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS +test -z "$LD" && LD=ld +test -z "$ac_objext" && ac_objext=o + +_LT_CC_BASENAME([$compiler]) + +# Only perform the check for file, if the check method requires it +test -z "$MAGIC_CMD" && MAGIC_CMD=file +case $deplibs_check_method in +file_magic*) + if test "$file_magic_cmd" = '$MAGIC_CMD'; then + _LT_PATH_MAGIC + fi + ;; +esac + +# Use C for the default configuration in the libtool script +LT_SUPPORTED_TAG([CC]) +_LT_LANG_C_CONFIG +_LT_LANG_DEFAULT_CONFIG +_LT_CONFIG_COMMANDS +])# _LT_SETUP + + +# _LT_PREPARE_SED_QUOTE_VARS +# -------------------------- +# Define a few sed substitution that help us do robust quoting. +m4_defun([_LT_PREPARE_SED_QUOTE_VARS], +[# Backslashify metacharacters that are still active within +# double-quoted strings. +sed_quote_subst='s/\([["`$\\]]\)/\\\1/g' + +# Same as above, but do not quote variable references. +double_quote_subst='s/\([["`\\]]\)/\\\1/g' + +# Sed substitution to delay expansion of an escaped shell variable in a +# double_quote_subst'ed string. +delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g' + +# Sed substitution to delay expansion of an escaped single quote. +delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g' + +# Sed substitution to avoid accidental globbing in evaled expressions +no_glob_subst='s/\*/\\\*/g' +]) + +# _LT_PROG_LTMAIN +# --------------- +# Note that this code is called both from 'configure', and 'config.status' +# now that we use AC_CONFIG_COMMANDS to generate libtool. Notably, +# 'config.status' has no value for ac_aux_dir unless we are using Automake, +# so we pass a copy along to make sure it has a sensible value anyway. +m4_defun([_LT_PROG_LTMAIN], +[m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([ltmain.sh])])dnl +_LT_CONFIG_LIBTOOL_INIT([ac_aux_dir='$ac_aux_dir']) +ltmain=$ac_aux_dir/ltmain.sh +])# _LT_PROG_LTMAIN + + +## ------------------------------------- ## +## Accumulate code for creating libtool. ## +## ------------------------------------- ## + +# So that we can recreate a full libtool script including additional +# tags, we accumulate the chunks of code to send to AC_CONFIG_COMMANDS +# in macros and then make a single call at the end using the 'libtool' +# label. + + +# _LT_CONFIG_LIBTOOL_INIT([INIT-COMMANDS]) +# ---------------------------------------- +# Register INIT-COMMANDS to be passed to AC_CONFIG_COMMANDS later. +m4_define([_LT_CONFIG_LIBTOOL_INIT], +[m4_ifval([$1], + [m4_append([_LT_OUTPUT_LIBTOOL_INIT], + [$1 +])])]) + +# Initialize. +m4_define([_LT_OUTPUT_LIBTOOL_INIT]) + + +# _LT_CONFIG_LIBTOOL([COMMANDS]) +# ------------------------------ +# Register COMMANDS to be passed to AC_CONFIG_COMMANDS later. +m4_define([_LT_CONFIG_LIBTOOL], +[m4_ifval([$1], + [m4_append([_LT_OUTPUT_LIBTOOL_COMMANDS], + [$1 +])])]) + +# Initialize. +m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS]) + + +# _LT_CONFIG_SAVE_COMMANDS([COMMANDS], [INIT_COMMANDS]) +# ----------------------------------------------------- +m4_defun([_LT_CONFIG_SAVE_COMMANDS], +[_LT_CONFIG_LIBTOOL([$1]) +_LT_CONFIG_LIBTOOL_INIT([$2]) +]) + + +# _LT_FORMAT_COMMENT([COMMENT]) +# ----------------------------- +# Add leading comment marks to the start of each line, and a trailing +# full-stop to the whole comment if one is not present already. +m4_define([_LT_FORMAT_COMMENT], +[m4_ifval([$1], [ +m4_bpatsubst([m4_bpatsubst([$1], [^ *], [# ])], + [['`$\]], [\\\&])]m4_bmatch([$1], [[!?.]$], [], [.]) +)]) + + + +## ------------------------ ## +## FIXME: Eliminate VARNAME ## +## ------------------------ ## + + +# _LT_DECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION], [IS-TAGGED?]) +# ------------------------------------------------------------------- +# CONFIGNAME is the name given to the value in the libtool script. +# VARNAME is the (base) name used in the configure script. +# VALUE may be 0, 1 or 2 for a computed quote escaped value based on +# VARNAME. Any other value will be used directly. +m4_define([_LT_DECL], +[lt_if_append_uniq([lt_decl_varnames], [$2], [, ], + [lt_dict_add_subkey([lt_decl_dict], [$2], [libtool_name], + [m4_ifval([$1], [$1], [$2])]) + lt_dict_add_subkey([lt_decl_dict], [$2], [value], [$3]) + m4_ifval([$4], + [lt_dict_add_subkey([lt_decl_dict], [$2], [description], [$4])]) + lt_dict_add_subkey([lt_decl_dict], [$2], + [tagged?], [m4_ifval([$5], [yes], [no])])]) +]) + + +# _LT_TAGDECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION]) +# -------------------------------------------------------- +m4_define([_LT_TAGDECL], [_LT_DECL([$1], [$2], [$3], [$4], [yes])]) + + +# lt_decl_tag_varnames([SEPARATOR], [VARNAME1...]) +# ------------------------------------------------ +m4_define([lt_decl_tag_varnames], +[_lt_decl_filter([tagged?], [yes], $@)]) + + +# _lt_decl_filter(SUBKEY, VALUE, [SEPARATOR], [VARNAME1..]) +# --------------------------------------------------------- +m4_define([_lt_decl_filter], +[m4_case([$#], + [0], [m4_fatal([$0: too few arguments: $#])], + [1], [m4_fatal([$0: too few arguments: $#: $1])], + [2], [lt_dict_filter([lt_decl_dict], [$1], [$2], [], lt_decl_varnames)], + [3], [lt_dict_filter([lt_decl_dict], [$1], [$2], [$3], lt_decl_varnames)], + [lt_dict_filter([lt_decl_dict], $@)])[]dnl +]) + + +# lt_decl_quote_varnames([SEPARATOR], [VARNAME1...]) +# -------------------------------------------------- +m4_define([lt_decl_quote_varnames], +[_lt_decl_filter([value], [1], $@)]) + + +# lt_decl_dquote_varnames([SEPARATOR], [VARNAME1...]) +# --------------------------------------------------- +m4_define([lt_decl_dquote_varnames], +[_lt_decl_filter([value], [2], $@)]) + + +# lt_decl_varnames_tagged([SEPARATOR], [VARNAME1...]) +# --------------------------------------------------- +m4_define([lt_decl_varnames_tagged], +[m4_assert([$# <= 2])dnl +_$0(m4_quote(m4_default([$1], [[, ]])), + m4_ifval([$2], [[$2]], [m4_dquote(lt_decl_tag_varnames)]), + m4_split(m4_normalize(m4_quote(_LT_TAGS)), [ ]))]) +m4_define([_lt_decl_varnames_tagged], +[m4_ifval([$3], [lt_combine([$1], [$2], [_], $3)])]) + + +# lt_decl_all_varnames([SEPARATOR], [VARNAME1...]) +# ------------------------------------------------ +m4_define([lt_decl_all_varnames], +[_$0(m4_quote(m4_default([$1], [[, ]])), + m4_if([$2], [], + m4_quote(lt_decl_varnames), + m4_quote(m4_shift($@))))[]dnl +]) +m4_define([_lt_decl_all_varnames], +[lt_join($@, lt_decl_varnames_tagged([$1], + lt_decl_tag_varnames([[, ]], m4_shift($@))))dnl +]) + + +# _LT_CONFIG_STATUS_DECLARE([VARNAME]) +# ------------------------------------ +# Quote a variable value, and forward it to 'config.status' so that its +# declaration there will have the same value as in 'configure'. VARNAME +# must have a single quote delimited value for this to work. +m4_define([_LT_CONFIG_STATUS_DECLARE], +[$1='`$ECHO "$][$1" | $SED "$delay_single_quote_subst"`']) + + +# _LT_CONFIG_STATUS_DECLARATIONS +# ------------------------------ +# We delimit libtool config variables with single quotes, so when +# we write them to config.status, we have to be sure to quote all +# embedded single quotes properly. In configure, this macro expands +# each variable declared with _LT_DECL (and _LT_TAGDECL) into: +# +# ='`$ECHO "$" | $SED "$delay_single_quote_subst"`' +m4_defun([_LT_CONFIG_STATUS_DECLARATIONS], +[m4_foreach([_lt_var], m4_quote(lt_decl_all_varnames), + [m4_n([_LT_CONFIG_STATUS_DECLARE(_lt_var)])])]) + + +# _LT_LIBTOOL_TAGS +# ---------------- +# Output comment and list of tags supported by the script +m4_defun([_LT_LIBTOOL_TAGS], +[_LT_FORMAT_COMMENT([The names of the tagged configurations supported by this script])dnl +available_tags='_LT_TAGS'dnl +]) + + +# _LT_LIBTOOL_DECLARE(VARNAME, [TAG]) +# ----------------------------------- +# Extract the dictionary values for VARNAME (optionally with TAG) and +# expand to a commented shell variable setting: +# +# # Some comment about what VAR is for. +# visible_name=$lt_internal_name +m4_define([_LT_LIBTOOL_DECLARE], +[_LT_FORMAT_COMMENT(m4_quote(lt_dict_fetch([lt_decl_dict], [$1], + [description])))[]dnl +m4_pushdef([_libtool_name], + m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [libtool_name])))[]dnl +m4_case(m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [value])), + [0], [_libtool_name=[$]$1], + [1], [_libtool_name=$lt_[]$1], + [2], [_libtool_name=$lt_[]$1], + [_libtool_name=lt_dict_fetch([lt_decl_dict], [$1], [value])])[]dnl +m4_ifval([$2], [_$2])[]m4_popdef([_libtool_name])[]dnl +]) + + +# _LT_LIBTOOL_CONFIG_VARS +# ----------------------- +# Produce commented declarations of non-tagged libtool config variables +# suitable for insertion in the LIBTOOL CONFIG section of the 'libtool' +# script. Tagged libtool config variables (even for the LIBTOOL CONFIG +# section) are produced by _LT_LIBTOOL_TAG_VARS. +m4_defun([_LT_LIBTOOL_CONFIG_VARS], +[m4_foreach([_lt_var], + m4_quote(_lt_decl_filter([tagged?], [no], [], lt_decl_varnames)), + [m4_n([_LT_LIBTOOL_DECLARE(_lt_var)])])]) + + +# _LT_LIBTOOL_TAG_VARS(TAG) +# ------------------------- +m4_define([_LT_LIBTOOL_TAG_VARS], +[m4_foreach([_lt_var], m4_quote(lt_decl_tag_varnames), + [m4_n([_LT_LIBTOOL_DECLARE(_lt_var, [$1])])])]) + + +# _LT_TAGVAR(VARNAME, [TAGNAME]) +# ------------------------------ +m4_define([_LT_TAGVAR], [m4_ifval([$2], [$1_$2], [$1])]) + + +# _LT_CONFIG_COMMANDS +# ------------------- +# Send accumulated output to $CONFIG_STATUS. Thanks to the lists of +# variables for single and double quote escaping we saved from calls +# to _LT_DECL, we can put quote escaped variables declarations +# into 'config.status', and then the shell code to quote escape them in +# for loops in 'config.status'. Finally, any additional code accumulated +# from calls to _LT_CONFIG_LIBTOOL_INIT is expanded. +m4_defun([_LT_CONFIG_COMMANDS], +[AC_PROVIDE_IFELSE([LT_OUTPUT], + dnl If the libtool generation code has been placed in $CONFIG_LT, + dnl instead of duplicating it all over again into config.status, + dnl then we will have config.status run $CONFIG_LT later, so it + dnl needs to know what name is stored there: + [AC_CONFIG_COMMANDS([libtool], + [$SHELL $CONFIG_LT || AS_EXIT(1)], [CONFIG_LT='$CONFIG_LT'])], + dnl If the libtool generation code is destined for config.status, + dnl expand the accumulated commands and init code now: + [AC_CONFIG_COMMANDS([libtool], + [_LT_OUTPUT_LIBTOOL_COMMANDS], [_LT_OUTPUT_LIBTOOL_COMMANDS_INIT])]) +])#_LT_CONFIG_COMMANDS + + +# Initialize. +m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS_INIT], +[ + +# The HP-UX ksh and POSIX shell print the target directory to stdout +# if CDPATH is set. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +sed_quote_subst='$sed_quote_subst' +double_quote_subst='$double_quote_subst' +delay_variable_subst='$delay_variable_subst' +_LT_CONFIG_STATUS_DECLARATIONS +LTCC='$LTCC' +LTCFLAGS='$LTCFLAGS' +compiler='$compiler_DEFAULT' + +# A function that is used when there is no print builtin or printf. +func_fallback_echo () +{ + eval 'cat <<_LTECHO_EOF +\$[]1 +_LTECHO_EOF' +} + +# Quote evaled strings. +for var in lt_decl_all_varnames([[ \ +]], lt_decl_quote_varnames); do + case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in + *[[\\\\\\\`\\"\\\$]]*) + eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\"" ## exclude from sc_prohibit_nested_quotes + ;; + *) + eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\"" + ;; + esac +done + +# Double-quote double-evaled strings. +for var in lt_decl_all_varnames([[ \ +]], lt_decl_dquote_varnames); do + case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in + *[[\\\\\\\`\\"\\\$]]*) + eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\"" ## exclude from sc_prohibit_nested_quotes + ;; + *) + eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\"" + ;; + esac +done + +_LT_OUTPUT_LIBTOOL_INIT +]) + +# _LT_GENERATED_FILE_INIT(FILE, [COMMENT]) +# ------------------------------------ +# Generate a child script FILE with all initialization necessary to +# reuse the environment learned by the parent script, and make the +# file executable. If COMMENT is supplied, it is inserted after the +# '#!' sequence but before initialization text begins. After this +# macro, additional text can be appended to FILE to form the body of +# the child script. The macro ends with non-zero status if the +# file could not be fully written (such as if the disk is full). +m4_ifdef([AS_INIT_GENERATED], +[m4_defun([_LT_GENERATED_FILE_INIT],[AS_INIT_GENERATED($@)])], +[m4_defun([_LT_GENERATED_FILE_INIT], +[m4_require([AS_PREPARE])]dnl +[m4_pushdef([AS_MESSAGE_LOG_FD])]dnl +[lt_write_fail=0 +cat >$1 <<_ASEOF || lt_write_fail=1 +#! $SHELL +# Generated by $as_me. +$2 +SHELL=\${CONFIG_SHELL-$SHELL} +export SHELL +_ASEOF +cat >>$1 <<\_ASEOF || lt_write_fail=1 +AS_SHELL_SANITIZE +_AS_PREPARE +exec AS_MESSAGE_FD>&1 +_ASEOF +test 0 = "$lt_write_fail" && chmod +x $1[]dnl +m4_popdef([AS_MESSAGE_LOG_FD])])])# _LT_GENERATED_FILE_INIT + +# LT_OUTPUT +# --------- +# This macro allows early generation of the libtool script (before +# AC_OUTPUT is called), incase it is used in configure for compilation +# tests. +AC_DEFUN([LT_OUTPUT], +[: ${CONFIG_LT=./config.lt} +AC_MSG_NOTICE([creating $CONFIG_LT]) +_LT_GENERATED_FILE_INIT(["$CONFIG_LT"], +[# Run this file to recreate a libtool stub with the current configuration.]) + +cat >>"$CONFIG_LT" <<\_LTEOF +lt_cl_silent=false +exec AS_MESSAGE_LOG_FD>>config.log +{ + echo + AS_BOX([Running $as_me.]) +} >&AS_MESSAGE_LOG_FD + +lt_cl_help="\ +'$as_me' creates a local libtool stub from the current configuration, +for use in further configure time tests before the real libtool is +generated. + +Usage: $[0] [[OPTIONS]] + + -h, --help print this help, then exit + -V, --version print version number, then exit + -q, --quiet do not print progress messages + -d, --debug don't remove temporary files + +Report bugs to ." + +lt_cl_version="\ +m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.lt[]dnl +m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION]) +configured by $[0], generated by m4_PACKAGE_STRING. + +Copyright (C) 2011 Free Software Foundation, Inc. +This config.lt script is free software; the Free Software Foundation +gives unlimited permision to copy, distribute and modify it." + +while test 0 != $[#] +do + case $[1] in + --version | --v* | -V ) + echo "$lt_cl_version"; exit 0 ;; + --help | --h* | -h ) + echo "$lt_cl_help"; exit 0 ;; + --debug | --d* | -d ) + debug=: ;; + --quiet | --q* | --silent | --s* | -q ) + lt_cl_silent=: ;; + + -*) AC_MSG_ERROR([unrecognized option: $[1] +Try '$[0] --help' for more information.]) ;; + + *) AC_MSG_ERROR([unrecognized argument: $[1] +Try '$[0] --help' for more information.]) ;; + esac + shift +done + +if $lt_cl_silent; then + exec AS_MESSAGE_FD>/dev/null +fi +_LTEOF + +cat >>"$CONFIG_LT" <<_LTEOF +_LT_OUTPUT_LIBTOOL_COMMANDS_INIT +_LTEOF + +cat >>"$CONFIG_LT" <<\_LTEOF +AC_MSG_NOTICE([creating $ofile]) +_LT_OUTPUT_LIBTOOL_COMMANDS +AS_EXIT(0) +_LTEOF +chmod +x "$CONFIG_LT" + +# configure is writing to config.log, but config.lt does its own redirection, +# appending to config.log, which fails on DOS, as config.log is still kept +# open by configure. Here we exec the FD to /dev/null, effectively closing +# config.log, so it can be properly (re)opened and appended to by config.lt. +lt_cl_success=: +test yes = "$silent" && + lt_config_lt_args="$lt_config_lt_args --quiet" +exec AS_MESSAGE_LOG_FD>/dev/null +$SHELL "$CONFIG_LT" $lt_config_lt_args || lt_cl_success=false +exec AS_MESSAGE_LOG_FD>>config.log +$lt_cl_success || AS_EXIT(1) +])# LT_OUTPUT + + +# _LT_CONFIG(TAG) +# --------------- +# If TAG is the built-in tag, create an initial libtool script with a +# default configuration from the untagged config vars. Otherwise add code +# to config.status for appending the configuration named by TAG from the +# matching tagged config vars. +m4_defun([_LT_CONFIG], +[m4_require([_LT_FILEUTILS_DEFAULTS])dnl +_LT_CONFIG_SAVE_COMMANDS([ + m4_define([_LT_TAG], m4_if([$1], [], [C], [$1]))dnl + m4_if(_LT_TAG, [C], [ + # See if we are running on zsh, and set the options that allow our + # commands through without removal of \ escapes. + if test -n "${ZSH_VERSION+set}"; then + setopt NO_GLOB_SUBST + fi + + cfgfile=${ofile}T + trap "$RM \"$cfgfile\"; exit 1" 1 2 15 + $RM "$cfgfile" + + cat <<_LT_EOF >> "$cfgfile" +#! $SHELL +# Generated automatically by $as_me ($PACKAGE) $VERSION +# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`: +# NOTE: Changes made to this file will be lost: look at ltmain.sh. + +# Provide generalized library-building support services. +# Written by Gordon Matzigkeit, 1996 + +_LT_COPYING +_LT_LIBTOOL_TAGS + +# Configured defaults for sys_lib_dlsearch_path munging. +: \${LT_SYS_LIBRARY_PATH="$configure_time_lt_sys_library_path"} + +# ### BEGIN LIBTOOL CONFIG +_LT_LIBTOOL_CONFIG_VARS +_LT_LIBTOOL_TAG_VARS +# ### END LIBTOOL CONFIG + +_LT_EOF + + cat <<'_LT_EOF' >> "$cfgfile" + +# ### BEGIN FUNCTIONS SHARED WITH CONFIGURE + +_LT_PREPARE_MUNGE_PATH_LIST +_LT_PREPARE_CC_BASENAME + +# ### END FUNCTIONS SHARED WITH CONFIGURE + +_LT_EOF + + case $host_os in + aix3*) + cat <<\_LT_EOF >> "$cfgfile" +# AIX sometimes has problems with the GCC collect2 program. For some +# reason, if we set the COLLECT_NAMES environment variable, the problems +# vanish in a puff of smoke. +if test set != "${COLLECT_NAMES+set}"; then + COLLECT_NAMES= + export COLLECT_NAMES +fi +_LT_EOF + ;; + esac + + _LT_PROG_LTMAIN + + # We use sed instead of cat because bash on DJGPP gets confused if + # if finds mixed CR/LF and LF-only lines. Since sed operates in + # text mode, it properly converts lines to CR/LF. This bash problem + # is reportedly fixed, but why not run on old versions too? + sed '$q' "$ltmain" >> "$cfgfile" \ + || (rm -f "$cfgfile"; exit 1) + + mv -f "$cfgfile" "$ofile" || + (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile") + chmod +x "$ofile" +], +[cat <<_LT_EOF >> "$ofile" + +dnl Unfortunately we have to use $1 here, since _LT_TAG is not expanded +dnl in a comment (ie after a #). +# ### BEGIN LIBTOOL TAG CONFIG: $1 +_LT_LIBTOOL_TAG_VARS(_LT_TAG) +# ### END LIBTOOL TAG CONFIG: $1 +_LT_EOF +])dnl /m4_if +], +[m4_if([$1], [], [ + PACKAGE='$PACKAGE' + VERSION='$VERSION' + RM='$RM' + ofile='$ofile'], []) +])dnl /_LT_CONFIG_SAVE_COMMANDS +])# _LT_CONFIG + + +# LT_SUPPORTED_TAG(TAG) +# --------------------- +# Trace this macro to discover what tags are supported by the libtool +# --tag option, using: +# autoconf --trace 'LT_SUPPORTED_TAG:$1' +AC_DEFUN([LT_SUPPORTED_TAG], []) + + +# C support is built-in for now +m4_define([_LT_LANG_C_enabled], []) +m4_define([_LT_TAGS], []) + + +# LT_LANG(LANG) +# ------------- +# Enable libtool support for the given language if not already enabled. +AC_DEFUN([LT_LANG], +[AC_BEFORE([$0], [LT_OUTPUT])dnl +m4_case([$1], + [C], [_LT_LANG(C)], + [C++], [_LT_LANG(CXX)], + [Go], [_LT_LANG(GO)], + [Java], [_LT_LANG(GCJ)], + [Fortran 77], [_LT_LANG(F77)], + [Fortran], [_LT_LANG(FC)], + [Windows Resource], [_LT_LANG(RC)], + [m4_ifdef([_LT_LANG_]$1[_CONFIG], + [_LT_LANG($1)], + [m4_fatal([$0: unsupported language: "$1"])])])dnl +])# LT_LANG + + +# _LT_LANG(LANGNAME) +# ------------------ +m4_defun([_LT_LANG], +[m4_ifdef([_LT_LANG_]$1[_enabled], [], + [LT_SUPPORTED_TAG([$1])dnl + m4_append([_LT_TAGS], [$1 ])dnl + m4_define([_LT_LANG_]$1[_enabled], [])dnl + _LT_LANG_$1_CONFIG($1)])dnl +])# _LT_LANG + + +m4_ifndef([AC_PROG_GO], [ +############################################################ +# NOTE: This macro has been submitted for inclusion into # +# GNU Autoconf as AC_PROG_GO. When it is available in # +# a released version of Autoconf we should remove this # +# macro and use it instead. # +############################################################ +m4_defun([AC_PROG_GO], +[AC_LANG_PUSH(Go)dnl +AC_ARG_VAR([GOC], [Go compiler command])dnl +AC_ARG_VAR([GOFLAGS], [Go compiler flags])dnl +_AC_ARG_VAR_LDFLAGS()dnl +AC_CHECK_TOOL(GOC, gccgo) +if test -z "$GOC"; then + if test -n "$ac_tool_prefix"; then + AC_CHECK_PROG(GOC, [${ac_tool_prefix}gccgo], [${ac_tool_prefix}gccgo]) + fi +fi +if test -z "$GOC"; then + AC_CHECK_PROG(GOC, gccgo, gccgo, false) +fi +])#m4_defun +])#m4_ifndef + + +# _LT_LANG_DEFAULT_CONFIG +# ----------------------- +m4_defun([_LT_LANG_DEFAULT_CONFIG], +[AC_PROVIDE_IFELSE([AC_PROG_CXX], + [LT_LANG(CXX)], + [m4_define([AC_PROG_CXX], defn([AC_PROG_CXX])[LT_LANG(CXX)])]) + +AC_PROVIDE_IFELSE([AC_PROG_F77], + [LT_LANG(F77)], + [m4_define([AC_PROG_F77], defn([AC_PROG_F77])[LT_LANG(F77)])]) + +AC_PROVIDE_IFELSE([AC_PROG_FC], + [LT_LANG(FC)], + [m4_define([AC_PROG_FC], defn([AC_PROG_FC])[LT_LANG(FC)])]) + +dnl The call to [A][M_PROG_GCJ] is quoted like that to stop aclocal +dnl pulling things in needlessly. +AC_PROVIDE_IFELSE([AC_PROG_GCJ], + [LT_LANG(GCJ)], + [AC_PROVIDE_IFELSE([A][M_PROG_GCJ], + [LT_LANG(GCJ)], + [AC_PROVIDE_IFELSE([LT_PROG_GCJ], + [LT_LANG(GCJ)], + [m4_ifdef([AC_PROG_GCJ], + [m4_define([AC_PROG_GCJ], defn([AC_PROG_GCJ])[LT_LANG(GCJ)])]) + m4_ifdef([A][M_PROG_GCJ], + [m4_define([A][M_PROG_GCJ], defn([A][M_PROG_GCJ])[LT_LANG(GCJ)])]) + m4_ifdef([LT_PROG_GCJ], + [m4_define([LT_PROG_GCJ], defn([LT_PROG_GCJ])[LT_LANG(GCJ)])])])])]) + +AC_PROVIDE_IFELSE([AC_PROG_GO], + [LT_LANG(GO)], + [m4_define([AC_PROG_GO], defn([AC_PROG_GO])[LT_LANG(GO)])]) + +AC_PROVIDE_IFELSE([LT_PROG_RC], + [LT_LANG(RC)], + [m4_define([LT_PROG_RC], defn([LT_PROG_RC])[LT_LANG(RC)])]) +])# _LT_LANG_DEFAULT_CONFIG + +# Obsolete macros: +AU_DEFUN([AC_LIBTOOL_CXX], [LT_LANG(C++)]) +AU_DEFUN([AC_LIBTOOL_F77], [LT_LANG(Fortran 77)]) +AU_DEFUN([AC_LIBTOOL_FC], [LT_LANG(Fortran)]) +AU_DEFUN([AC_LIBTOOL_GCJ], [LT_LANG(Java)]) +AU_DEFUN([AC_LIBTOOL_RC], [LT_LANG(Windows Resource)]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_LIBTOOL_CXX], []) +dnl AC_DEFUN([AC_LIBTOOL_F77], []) +dnl AC_DEFUN([AC_LIBTOOL_FC], []) +dnl AC_DEFUN([AC_LIBTOOL_GCJ], []) +dnl AC_DEFUN([AC_LIBTOOL_RC], []) + + +# _LT_TAG_COMPILER +# ---------------- +m4_defun([_LT_TAG_COMPILER], +[AC_REQUIRE([AC_PROG_CC])dnl + +_LT_DECL([LTCC], [CC], [1], [A C compiler])dnl +_LT_DECL([LTCFLAGS], [CFLAGS], [1], [LTCC compiler flags])dnl +_LT_TAGDECL([CC], [compiler], [1], [A language specific compiler])dnl +_LT_TAGDECL([with_gcc], [GCC], [0], [Is the compiler the GNU compiler?])dnl + +# If no C compiler was specified, use CC. +LTCC=${LTCC-"$CC"} + +# If no C compiler flags were specified, use CFLAGS. +LTCFLAGS=${LTCFLAGS-"$CFLAGS"} + +# Allow CC to be a program name with arguments. +compiler=$CC +])# _LT_TAG_COMPILER + + +# _LT_COMPILER_BOILERPLATE +# ------------------------ +# Check for compiler boilerplate output or warnings with +# the simple compiler test code. +m4_defun([_LT_COMPILER_BOILERPLATE], +[m4_require([_LT_DECL_SED])dnl +ac_outfile=conftest.$ac_objext +echo "$lt_simple_compile_test_code" >conftest.$ac_ext +eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err +_lt_compiler_boilerplate=`cat conftest.err` +$RM conftest* +])# _LT_COMPILER_BOILERPLATE + + +# _LT_LINKER_BOILERPLATE +# ---------------------- +# Check for linker boilerplate output or warnings with +# the simple link test code. +m4_defun([_LT_LINKER_BOILERPLATE], +[m4_require([_LT_DECL_SED])dnl +ac_outfile=conftest.$ac_objext +echo "$lt_simple_link_test_code" >conftest.$ac_ext +eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err +_lt_linker_boilerplate=`cat conftest.err` +$RM -r conftest* +])# _LT_LINKER_BOILERPLATE + +# _LT_REQUIRED_DARWIN_CHECKS +# ------------------------- +m4_defun_once([_LT_REQUIRED_DARWIN_CHECKS],[ + case $host_os in + rhapsody* | darwin*) + AC_CHECK_TOOL([DSYMUTIL], [dsymutil], [:]) + AC_CHECK_TOOL([NMEDIT], [nmedit], [:]) + AC_CHECK_TOOL([LIPO], [lipo], [:]) + AC_CHECK_TOOL([OTOOL], [otool], [:]) + AC_CHECK_TOOL([OTOOL64], [otool64], [:]) + _LT_DECL([], [DSYMUTIL], [1], + [Tool to manipulate archived DWARF debug symbol files on Mac OS X]) + _LT_DECL([], [NMEDIT], [1], + [Tool to change global to local symbols on Mac OS X]) + _LT_DECL([], [LIPO], [1], + [Tool to manipulate fat objects and archives on Mac OS X]) + _LT_DECL([], [OTOOL], [1], + [ldd/readelf like tool for Mach-O binaries on Mac OS X]) + _LT_DECL([], [OTOOL64], [1], + [ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4]) + + AC_CACHE_CHECK([for -single_module linker flag],[lt_cv_apple_cc_single_mod], + [lt_cv_apple_cc_single_mod=no + if test -z "$LT_MULTI_MODULE"; then + # By default we will add the -single_module flag. You can override + # by either setting the environment variable LT_MULTI_MODULE + # non-empty at configure time, or by adding -multi_module to the + # link flags. + rm -rf libconftest.dylib* + echo "int foo(void){return 1;}" > conftest.c + echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \ +-dynamiclib -Wl,-single_module conftest.c" >&AS_MESSAGE_LOG_FD + $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \ + -dynamiclib -Wl,-single_module conftest.c 2>conftest.err + _lt_result=$? + # If there is a non-empty error log, and "single_module" + # appears in it, assume the flag caused a linker warning + if test -s conftest.err && $GREP single_module conftest.err; then + cat conftest.err >&AS_MESSAGE_LOG_FD + # Otherwise, if the output was created with a 0 exit code from + # the compiler, it worked. + elif test -f libconftest.dylib && test 0 = "$_lt_result"; then + lt_cv_apple_cc_single_mod=yes + else + cat conftest.err >&AS_MESSAGE_LOG_FD + fi + rm -rf libconftest.dylib* + rm -f conftest.* + fi]) + + AC_CACHE_CHECK([for -exported_symbols_list linker flag], + [lt_cv_ld_exported_symbols_list], + [lt_cv_ld_exported_symbols_list=no + save_LDFLAGS=$LDFLAGS + echo "_main" > conftest.sym + LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym" + AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])], + [lt_cv_ld_exported_symbols_list=yes], + [lt_cv_ld_exported_symbols_list=no]) + LDFLAGS=$save_LDFLAGS + ]) + + AC_CACHE_CHECK([for -force_load linker flag],[lt_cv_ld_force_load], + [lt_cv_ld_force_load=no + cat > conftest.c << _LT_EOF +int forced_loaded() { return 2;} +_LT_EOF + echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&AS_MESSAGE_LOG_FD + $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&AS_MESSAGE_LOG_FD + echo "$AR cru libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD + $AR cru libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD + echo "$RANLIB libconftest.a" >&AS_MESSAGE_LOG_FD + $RANLIB libconftest.a 2>&AS_MESSAGE_LOG_FD + cat > conftest.c << _LT_EOF +int main() { return 0;} +_LT_EOF + echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&AS_MESSAGE_LOG_FD + $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err + _lt_result=$? + if test -s conftest.err && $GREP force_load conftest.err; then + cat conftest.err >&AS_MESSAGE_LOG_FD + elif test -f conftest && test 0 = "$_lt_result" && $GREP forced_load conftest >/dev/null 2>&1; then + lt_cv_ld_force_load=yes + else + cat conftest.err >&AS_MESSAGE_LOG_FD + fi + rm -f conftest.err libconftest.a conftest conftest.c + rm -rf conftest.dSYM + ]) + case $host_os in + rhapsody* | darwin1.[[012]]) + _lt_dar_allow_undefined='$wl-undefined ${wl}suppress' ;; + darwin1.*) + _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;; + darwin*) # darwin 5.x on + # if running on 10.5 or later, the deployment target defaults + # to the OS version, if on x86, and 10.4, the deployment + # target defaults to 10.4. Don't you love it? + case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in + 10.0,*86*-darwin8*|10.0,*-darwin[[91]]*) + _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;; + 10.[[012]][[,.]]*) + _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;; + 10.*) + _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;; + esac + ;; + esac + if test yes = "$lt_cv_apple_cc_single_mod"; then + _lt_dar_single_mod='$single_module' + fi + if test yes = "$lt_cv_ld_exported_symbols_list"; then + _lt_dar_export_syms=' $wl-exported_symbols_list,$output_objdir/$libname-symbols.expsym' + else + _lt_dar_export_syms='~$NMEDIT -s $output_objdir/$libname-symbols.expsym $lib' + fi + if test : != "$DSYMUTIL" && test no = "$lt_cv_ld_force_load"; then + _lt_dsymutil='~$DSYMUTIL $lib || :' + else + _lt_dsymutil= + fi + ;; + esac +]) + + +# _LT_DARWIN_LINKER_FEATURES([TAG]) +# --------------------------------- +# Checks for linker and compiler features on darwin +m4_defun([_LT_DARWIN_LINKER_FEATURES], +[ + m4_require([_LT_REQUIRED_DARWIN_CHECKS]) + _LT_TAGVAR(archive_cmds_need_lc, $1)=no + _LT_TAGVAR(hardcode_direct, $1)=no + _LT_TAGVAR(hardcode_automatic, $1)=yes + _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported + if test yes = "$lt_cv_ld_force_load"; then + _LT_TAGVAR(whole_archive_flag_spec, $1)='`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience $wl-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`' + m4_case([$1], [F77], [_LT_TAGVAR(compiler_needs_object, $1)=yes], + [FC], [_LT_TAGVAR(compiler_needs_object, $1)=yes]) + else + _LT_TAGVAR(whole_archive_flag_spec, $1)='' + fi + _LT_TAGVAR(link_all_deplibs, $1)=yes + _LT_TAGVAR(allow_undefined_flag, $1)=$_lt_dar_allow_undefined + case $cc_basename in + ifort*|nagfor*) _lt_dar_can_shared=yes ;; + *) _lt_dar_can_shared=$GCC ;; + esac + if test yes = "$_lt_dar_can_shared"; then + output_verbose_link_cmd=func_echo_all + _LT_TAGVAR(archive_cmds, $1)="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dsymutil" + _LT_TAGVAR(module_cmds, $1)="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dsymutil" + _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod$_lt_dar_export_syms$_lt_dsymutil" + _LT_TAGVAR(module_expsym_cmds, $1)="sed -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil" + m4_if([$1], [CXX], +[ if test yes != "$lt_cv_apple_cc_single_mod"; then + _LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs -nostdlib -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dsymutil" + _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dar_export_syms$_lt_dsymutil" + fi +],[]) + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi +]) + +# _LT_SYS_MODULE_PATH_AIX([TAGNAME]) +# ---------------------------------- +# Links a minimal program and checks the executable +# for the system default hardcoded library path. In most cases, +# this is /usr/lib:/lib, but when the MPI compilers are used +# the location of the communication and MPI libs are included too. +# If we don't find anything, use the default library path according +# to the aix ld manual. +# Store the results from the different compilers for each TAGNAME. +# Allow to override them for all tags through lt_cv_aix_libpath. +m4_defun([_LT_SYS_MODULE_PATH_AIX], +[m4_require([_LT_DECL_SED])dnl +if test set = "${lt_cv_aix_libpath+set}"; then + aix_libpath=$lt_cv_aix_libpath +else + AC_CACHE_VAL([_LT_TAGVAR([lt_cv_aix_libpath_], [$1])], + [AC_LINK_IFELSE([AC_LANG_PROGRAM],[ + lt_aix_libpath_sed='[ + /Import File Strings/,/^$/ { + /^0/ { + s/^0 *\([^ ]*\) *$/\1/ + p + } + }]' + _LT_TAGVAR([lt_cv_aix_libpath_], [$1])=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` + # Check for a 64-bit object if we didn't find anything. + if test -z "$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])"; then + _LT_TAGVAR([lt_cv_aix_libpath_], [$1])=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` + fi],[]) + if test -z "$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])"; then + _LT_TAGVAR([lt_cv_aix_libpath_], [$1])=/usr/lib:/lib + fi + ]) + aix_libpath=$_LT_TAGVAR([lt_cv_aix_libpath_], [$1]) +fi +])# _LT_SYS_MODULE_PATH_AIX + + +# _LT_SHELL_INIT(ARG) +# ------------------- +m4_define([_LT_SHELL_INIT], +[m4_divert_text([M4SH-INIT], [$1 +])])# _LT_SHELL_INIT + + + +# _LT_PROG_ECHO_BACKSLASH +# ----------------------- +# Find how we can fake an echo command that does not interpret backslash. +# In particular, with Autoconf 2.60 or later we add some code to the start +# of the generated configure script that will find a shell with a builtin +# printf (that we can use as an echo command). +m4_defun([_LT_PROG_ECHO_BACKSLASH], +[ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO +ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO + +AC_MSG_CHECKING([how to print strings]) +# Test print first, because it will be a builtin if present. +if test "X`( print -r -- -n ) 2>/dev/null`" = X-n && \ + test "X`print -r -- $ECHO 2>/dev/null`" = "X$ECHO"; then + ECHO='print -r --' +elif test "X`printf %s $ECHO 2>/dev/null`" = "X$ECHO"; then + ECHO='printf %s\n' +else + # Use this function as a fallback that always works. + func_fallback_echo () + { + eval 'cat <<_LTECHO_EOF +$[]1 +_LTECHO_EOF' + } + ECHO='func_fallback_echo' +fi + +# func_echo_all arg... +# Invoke $ECHO with all args, space-separated. +func_echo_all () +{ + $ECHO "$*" +} + +case $ECHO in + printf*) AC_MSG_RESULT([printf]) ;; + print*) AC_MSG_RESULT([print -r]) ;; + *) AC_MSG_RESULT([cat]) ;; +esac + +m4_ifdef([_AS_DETECT_SUGGESTED], +[_AS_DETECT_SUGGESTED([ + test -n "${ZSH_VERSION+set}${BASH_VERSION+set}" || ( + ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' + ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO + ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO + PATH=/empty FPATH=/empty; export PATH FPATH + test "X`printf %s $ECHO`" = "X$ECHO" \ + || test "X`print -r -- $ECHO`" = "X$ECHO" )])]) + +_LT_DECL([], [SHELL], [1], [Shell to use when invoking shell scripts]) +_LT_DECL([], [ECHO], [1], [An echo program that protects backslashes]) +])# _LT_PROG_ECHO_BACKSLASH + + +# _LT_WITH_SYSROOT +# ---------------- +AC_DEFUN([_LT_WITH_SYSROOT], +[AC_MSG_CHECKING([for sysroot]) +AC_ARG_WITH([sysroot], +[AS_HELP_STRING([--with-sysroot@<:@=DIR@:>@], + [Search for dependent libraries within DIR (or the compiler's sysroot + if not specified).])], +[], [with_sysroot=no]) + +dnl lt_sysroot will always be passed unquoted. We quote it here +dnl in case the user passed a directory name. +lt_sysroot= +case $with_sysroot in #( + yes) + if test yes = "$GCC"; then + lt_sysroot=`$CC --print-sysroot 2>/dev/null` + fi + ;; #( + /*) + lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"` + ;; #( + no|'') + ;; #( + *) + AC_MSG_RESULT([$with_sysroot]) + AC_MSG_ERROR([The sysroot must be an absolute path.]) + ;; +esac + + AC_MSG_RESULT([${lt_sysroot:-no}]) +_LT_DECL([], [lt_sysroot], [0], [The root where to search for ]dnl +[dependent libraries, and where our libraries should be installed.])]) + +# _LT_ENABLE_LOCK +# --------------- +m4_defun([_LT_ENABLE_LOCK], +[AC_ARG_ENABLE([libtool-lock], + [AS_HELP_STRING([--disable-libtool-lock], + [avoid locking (might break parallel builds)])]) +test no = "$enable_libtool_lock" || enable_libtool_lock=yes + +# Some flags need to be propagated to the compiler or linker for good +# libtool support. +case $host in +ia64-*-hpux*) + # Find out what ABI is being produced by ac_compile, and set mode + # options accordingly. + echo 'int i;' > conftest.$ac_ext + if AC_TRY_EVAL(ac_compile); then + case `/usr/bin/file conftest.$ac_objext` in + *ELF-32*) + HPUX_IA64_MODE=32 + ;; + *ELF-64*) + HPUX_IA64_MODE=64 + ;; + esac + fi + rm -rf conftest* + ;; +*-*-irix6*) + # Find out what ABI is being produced by ac_compile, and set linker + # options accordingly. + echo '[#]line '$LINENO' "configure"' > conftest.$ac_ext + if AC_TRY_EVAL(ac_compile); then + if test yes = "$lt_cv_prog_gnu_ld"; then + case `/usr/bin/file conftest.$ac_objext` in + *32-bit*) + LD="${LD-ld} -melf32bsmip" + ;; + *N32*) + LD="${LD-ld} -melf32bmipn32" + ;; + *64-bit*) + LD="${LD-ld} -melf64bmip" + ;; + esac + else + case `/usr/bin/file conftest.$ac_objext` in + *32-bit*) + LD="${LD-ld} -32" + ;; + *N32*) + LD="${LD-ld} -n32" + ;; + *64-bit*) + LD="${LD-ld} -64" + ;; + esac + fi + fi + rm -rf conftest* + ;; + +mips64*-*linux*) + # Find out what ABI is being produced by ac_compile, and set linker + # options accordingly. + echo '[#]line '$LINENO' "configure"' > conftest.$ac_ext + if AC_TRY_EVAL(ac_compile); then + emul=elf + case `/usr/bin/file conftest.$ac_objext` in + *32-bit*) + emul="${emul}32" + ;; + *64-bit*) + emul="${emul}64" + ;; + esac + case `/usr/bin/file conftest.$ac_objext` in + *MSB*) + emul="${emul}btsmip" + ;; + *LSB*) + emul="${emul}ltsmip" + ;; + esac + case `/usr/bin/file conftest.$ac_objext` in + *N32*) + emul="${emul}n32" + ;; + esac + LD="${LD-ld} -m $emul" + fi + rm -rf conftest* + ;; + +x86_64-*kfreebsd*-gnu|x86_64-*linux*|powerpc*-*linux*| \ +s390*-*linux*|s390*-*tpf*|sparc*-*linux*) + # Find out what ABI is being produced by ac_compile, and set linker + # options accordingly. Note that the listed cases only cover the + # situations where additional linker options are needed (such as when + # doing 32-bit compilation for a host where ld defaults to 64-bit, or + # vice versa); the common cases where no linker options are needed do + # not appear in the list. + echo 'int i;' > conftest.$ac_ext + if AC_TRY_EVAL(ac_compile); then + case `/usr/bin/file conftest.o` in + *32-bit*) + case $host in + x86_64-*kfreebsd*-gnu) + LD="${LD-ld} -m elf_i386_fbsd" + ;; + x86_64-*linux*) + case `/usr/bin/file conftest.o` in + *x86-64*) + LD="${LD-ld} -m elf32_x86_64" + ;; + *) + LD="${LD-ld} -m elf_i386" + ;; + esac + ;; + powerpc64le-*linux*) + LD="${LD-ld} -m elf32lppclinux" + ;; + powerpc64-*linux*) + LD="${LD-ld} -m elf32ppclinux" + ;; + s390x-*linux*) + LD="${LD-ld} -m elf_s390" + ;; + sparc64-*linux*) + LD="${LD-ld} -m elf32_sparc" + ;; + esac + ;; + *64-bit*) + case $host in + x86_64-*kfreebsd*-gnu) + LD="${LD-ld} -m elf_x86_64_fbsd" + ;; + x86_64-*linux*) + LD="${LD-ld} -m elf_x86_64" + ;; + powerpcle-*linux*) + LD="${LD-ld} -m elf64lppc" + ;; + powerpc-*linux*) + LD="${LD-ld} -m elf64ppc" + ;; + s390*-*linux*|s390*-*tpf*) + LD="${LD-ld} -m elf64_s390" + ;; + sparc*-*linux*) + LD="${LD-ld} -m elf64_sparc" + ;; + esac + ;; + esac + fi + rm -rf conftest* + ;; + +*-*-sco3.2v5*) + # On SCO OpenServer 5, we need -belf to get full-featured binaries. + SAVE_CFLAGS=$CFLAGS + CFLAGS="$CFLAGS -belf" + AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf, + [AC_LANG_PUSH(C) + AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no]) + AC_LANG_POP]) + if test yes != "$lt_cv_cc_needs_belf"; then + # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf + CFLAGS=$SAVE_CFLAGS + fi + ;; +*-*solaris*) + # Find out what ABI is being produced by ac_compile, and set linker + # options accordingly. + echo 'int i;' > conftest.$ac_ext + if AC_TRY_EVAL(ac_compile); then + case `/usr/bin/file conftest.o` in + *64-bit*) + case $lt_cv_prog_gnu_ld in + yes*) + case $host in + i?86-*-solaris*|x86_64-*-solaris*) + LD="${LD-ld} -m elf_x86_64" + ;; + sparc*-*-solaris*) + LD="${LD-ld} -m elf64_sparc" + ;; + esac + # GNU ld 2.21 introduced _sol2 emulations. Use them if available. + if ${LD-ld} -V | grep _sol2 >/dev/null 2>&1; then + LD=${LD-ld}_sol2 + fi + ;; + *) + if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then + LD="${LD-ld} -64" + fi + ;; + esac + ;; + esac + fi + rm -rf conftest* + ;; +esac + +need_locks=$enable_libtool_lock +])# _LT_ENABLE_LOCK + + +# _LT_PROG_AR +# ----------- +m4_defun([_LT_PROG_AR], +[AC_CHECK_TOOLS(AR, [ar], false) +: ${AR=ar} +: ${AR_FLAGS=cru} +_LT_DECL([], [AR], [1], [The archiver]) +_LT_DECL([], [AR_FLAGS], [1], [Flags to create an archive]) + +AC_CACHE_CHECK([for archiver @FILE support], [lt_cv_ar_at_file], + [lt_cv_ar_at_file=no + AC_COMPILE_IFELSE([AC_LANG_PROGRAM], + [echo conftest.$ac_objext > conftest.lst + lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&AS_MESSAGE_LOG_FD' + AC_TRY_EVAL([lt_ar_try]) + if test 0 -eq "$ac_status"; then + # Ensure the archiver fails upon bogus file names. + rm -f conftest.$ac_objext libconftest.a + AC_TRY_EVAL([lt_ar_try]) + if test 0 -ne "$ac_status"; then + lt_cv_ar_at_file=@ + fi + fi + rm -f conftest.* libconftest.a + ]) + ]) + +if test no = "$lt_cv_ar_at_file"; then + archiver_list_spec= +else + archiver_list_spec=$lt_cv_ar_at_file +fi +_LT_DECL([], [archiver_list_spec], [1], + [How to feed a file listing to the archiver]) +])# _LT_PROG_AR + + +# _LT_CMD_OLD_ARCHIVE +# ------------------- +m4_defun([_LT_CMD_OLD_ARCHIVE], +[_LT_PROG_AR + +AC_CHECK_TOOL(STRIP, strip, :) +test -z "$STRIP" && STRIP=: +_LT_DECL([], [STRIP], [1], [A symbol stripping program]) + +AC_CHECK_TOOL(RANLIB, ranlib, :) +test -z "$RANLIB" && RANLIB=: +_LT_DECL([], [RANLIB], [1], + [Commands used to install an old-style archive]) + +# Determine commands to create old-style static archives. +old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs' +old_postinstall_cmds='chmod 644 $oldlib' +old_postuninstall_cmds= + +if test -n "$RANLIB"; then + case $host_os in + bitrig* | openbsd*) + old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib" + ;; + *) + old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib" + ;; + esac + old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib" +fi + +case $host_os in + darwin*) + lock_old_archive_extraction=yes ;; + *) + lock_old_archive_extraction=no ;; +esac +_LT_DECL([], [old_postinstall_cmds], [2]) +_LT_DECL([], [old_postuninstall_cmds], [2]) +_LT_TAGDECL([], [old_archive_cmds], [2], + [Commands used to build an old-style archive]) +_LT_DECL([], [lock_old_archive_extraction], [0], + [Whether to use a lock for old archive extraction]) +])# _LT_CMD_OLD_ARCHIVE + + +# _LT_COMPILER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS, +# [OUTPUT-FILE], [ACTION-SUCCESS], [ACTION-FAILURE]) +# ---------------------------------------------------------------- +# Check whether the given compiler option works +AC_DEFUN([_LT_COMPILER_OPTION], +[m4_require([_LT_FILEUTILS_DEFAULTS])dnl +m4_require([_LT_DECL_SED])dnl +AC_CACHE_CHECK([$1], [$2], + [$2=no + m4_if([$4], , [ac_outfile=conftest.$ac_objext], [ac_outfile=$4]) + echo "$lt_simple_compile_test_code" > conftest.$ac_ext + lt_compiler_flag="$3" ## exclude from sc_useless_quotes_in_assignment + # Insert the option either (1) after the last *FLAGS variable, or + # (2) before a word containing "conftest.", or (3) at the end. + # Note that $ac_compile itself does not contain backslashes and begins + # with a dollar sign (not a hyphen), so the echo should work correctly. + # The option is referenced via a variable to avoid confusing sed. + lt_compile=`echo "$ac_compile" | $SED \ + -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ + -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \ + -e 's:$: $lt_compiler_flag:'` + (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD) + (eval "$lt_compile" 2>conftest.err) + ac_status=$? + cat conftest.err >&AS_MESSAGE_LOG_FD + echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD + if (exit $ac_status) && test -s "$ac_outfile"; then + # The compiler can only warn and ignore the option if not recognized + # So say no if there are warnings other than the usual output. + $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp + $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 + if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then + $2=yes + fi + fi + $RM conftest* +]) + +if test yes = "[$]$2"; then + m4_if([$5], , :, [$5]) +else + m4_if([$6], , :, [$6]) +fi +])# _LT_COMPILER_OPTION + +# Old name: +AU_ALIAS([AC_LIBTOOL_COMPILER_OPTION], [_LT_COMPILER_OPTION]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_LIBTOOL_COMPILER_OPTION], []) + + +# _LT_LINKER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS, +# [ACTION-SUCCESS], [ACTION-FAILURE]) +# ---------------------------------------------------- +# Check whether the given linker option works +AC_DEFUN([_LT_LINKER_OPTION], +[m4_require([_LT_FILEUTILS_DEFAULTS])dnl +m4_require([_LT_DECL_SED])dnl +AC_CACHE_CHECK([$1], [$2], + [$2=no + save_LDFLAGS=$LDFLAGS + LDFLAGS="$LDFLAGS $3" + echo "$lt_simple_link_test_code" > conftest.$ac_ext + if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then + # The linker can only warn and ignore the option if not recognized + # So say no if there are warnings + if test -s conftest.err; then + # Append any errors to the config.log. + cat conftest.err 1>&AS_MESSAGE_LOG_FD + $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp + $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 + if diff conftest.exp conftest.er2 >/dev/null; then + $2=yes + fi + else + $2=yes + fi + fi + $RM -r conftest* + LDFLAGS=$save_LDFLAGS +]) + +if test yes = "[$]$2"; then + m4_if([$4], , :, [$4]) +else + m4_if([$5], , :, [$5]) +fi +])# _LT_LINKER_OPTION + +# Old name: +AU_ALIAS([AC_LIBTOOL_LINKER_OPTION], [_LT_LINKER_OPTION]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_LIBTOOL_LINKER_OPTION], []) + + +# LT_CMD_MAX_LEN +#--------------- +AC_DEFUN([LT_CMD_MAX_LEN], +[AC_REQUIRE([AC_CANONICAL_HOST])dnl +# find the maximum length of command line arguments +AC_MSG_CHECKING([the maximum length of command line arguments]) +AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl + i=0 + teststring=ABCD + + case $build_os in + msdosdjgpp*) + # On DJGPP, this test can blow up pretty badly due to problems in libc + # (any single argument exceeding 2000 bytes causes a buffer overrun + # during glob expansion). Even if it were fixed, the result of this + # check would be larger than it should be. + lt_cv_sys_max_cmd_len=12288; # 12K is about right + ;; + + gnu*) + # Under GNU Hurd, this test is not required because there is + # no limit to the length of command line arguments. + # Libtool will interpret -1 as no limit whatsoever + lt_cv_sys_max_cmd_len=-1; + ;; + + cygwin* | mingw* | cegcc*) + # On Win9x/ME, this test blows up -- it succeeds, but takes + # about 5 minutes as the teststring grows exponentially. + # Worse, since 9x/ME are not pre-emptively multitasking, + # you end up with a "frozen" computer, even though with patience + # the test eventually succeeds (with a max line length of 256k). + # Instead, let's just punt: use the minimum linelength reported by + # all of the supported platforms: 8192 (on NT/2K/XP). + lt_cv_sys_max_cmd_len=8192; + ;; + + mint*) + # On MiNT this can take a long time and run out of memory. + lt_cv_sys_max_cmd_len=8192; + ;; + + amigaos*) + # On AmigaOS with pdksh, this test takes hours, literally. + # So we just punt and use a minimum line length of 8192. + lt_cv_sys_max_cmd_len=8192; + ;; + + bitrig* | darwin* | dragonfly* | freebsd* | netbsd* | openbsd*) + # This has been around since 386BSD, at least. Likely further. + if test -x /sbin/sysctl; then + lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax` + elif test -x /usr/sbin/sysctl; then + lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax` + else + lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs + fi + # And add a safety zone + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` + ;; + + interix*) + # We know the value 262144 and hardcode it with a safety zone (like BSD) + lt_cv_sys_max_cmd_len=196608 + ;; + + os2*) + # The test takes a long time on OS/2. + lt_cv_sys_max_cmd_len=8192 + ;; + + osf*) + # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure + # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not + # nice to cause kernel panics so lets avoid the loop below. + # First set a reasonable default. + lt_cv_sys_max_cmd_len=16384 + # + if test -x /sbin/sysconfig; then + case `/sbin/sysconfig -q proc exec_disable_arg_limit` in + *1*) lt_cv_sys_max_cmd_len=-1 ;; + esac + fi + ;; + sco3.2v5*) + lt_cv_sys_max_cmd_len=102400 + ;; + sysv5* | sco5v6* | sysv4.2uw2*) + kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null` + if test -n "$kargmax"; then + lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[[ ]]//'` + else + lt_cv_sys_max_cmd_len=32768 + fi + ;; + *) + lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null` + if test -n "$lt_cv_sys_max_cmd_len" && \ + test undefined != "$lt_cv_sys_max_cmd_len"; then + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` + else + # Make teststring a little bigger before we do anything with it. + # a 1K string should be a reasonable start. + for i in 1 2 3 4 5 6 7 8; do + teststring=$teststring$teststring + done + SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}} + # If test is not a shell built-in, we'll probably end up computing a + # maximum length that is only half of the actual maximum length, but + # we can't tell. + while { test X`env echo "$teststring$teststring" 2>/dev/null` \ + = "X$teststring$teststring"; } >/dev/null 2>&1 && + test 17 != "$i" # 1/2 MB should be enough + do + i=`expr $i + 1` + teststring=$teststring$teststring + done + # Only check the string length outside the loop. + lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1` + teststring= + # Add a significant safety factor because C++ compilers can tack on + # massive amounts of additional arguments before passing them to the + # linker. It appears as though 1/2 is a usable value. + lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2` + fi + ;; + esac +]) +if test -n "$lt_cv_sys_max_cmd_len"; then + AC_MSG_RESULT($lt_cv_sys_max_cmd_len) +else + AC_MSG_RESULT(none) +fi +max_cmd_len=$lt_cv_sys_max_cmd_len +_LT_DECL([], [max_cmd_len], [0], + [What is the maximum length of a command?]) +])# LT_CMD_MAX_LEN + +# Old name: +AU_ALIAS([AC_LIBTOOL_SYS_MAX_CMD_LEN], [LT_CMD_MAX_LEN]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_LIBTOOL_SYS_MAX_CMD_LEN], []) + + +# _LT_HEADER_DLFCN +# ---------------- +m4_defun([_LT_HEADER_DLFCN], +[AC_CHECK_HEADERS([dlfcn.h], [], [], [AC_INCLUDES_DEFAULT])dnl +])# _LT_HEADER_DLFCN + + +# _LT_TRY_DLOPEN_SELF (ACTION-IF-TRUE, ACTION-IF-TRUE-W-USCORE, +# ACTION-IF-FALSE, ACTION-IF-CROSS-COMPILING) +# ---------------------------------------------------------------- +m4_defun([_LT_TRY_DLOPEN_SELF], +[m4_require([_LT_HEADER_DLFCN])dnl +if test yes = "$cross_compiling"; then : + [$4] +else + lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 + lt_status=$lt_dlunknown + cat > conftest.$ac_ext <<_LT_EOF +[#line $LINENO "configure" +#include "confdefs.h" + +#if HAVE_DLFCN_H +#include +#endif + +#include + +#ifdef RTLD_GLOBAL +# define LT_DLGLOBAL RTLD_GLOBAL +#else +# ifdef DL_GLOBAL +# define LT_DLGLOBAL DL_GLOBAL +# else +# define LT_DLGLOBAL 0 +# endif +#endif + +/* We may have to define LT_DLLAZY_OR_NOW in the command line if we + find out it does not work in some platform. */ +#ifndef LT_DLLAZY_OR_NOW +# ifdef RTLD_LAZY +# define LT_DLLAZY_OR_NOW RTLD_LAZY +# else +# ifdef DL_LAZY +# define LT_DLLAZY_OR_NOW DL_LAZY +# else +# ifdef RTLD_NOW +# define LT_DLLAZY_OR_NOW RTLD_NOW +# else +# ifdef DL_NOW +# define LT_DLLAZY_OR_NOW DL_NOW +# else +# define LT_DLLAZY_OR_NOW 0 +# endif +# endif +# endif +# endif +#endif + +/* When -fvisibility=hidden is used, assume the code has been annotated + correspondingly for the symbols needed. */ +#if defined __GNUC__ && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)) +int fnord () __attribute__((visibility("default"))); +#endif + +int fnord () { return 42; } +int main () +{ + void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW); + int status = $lt_dlunknown; + + if (self) + { + if (dlsym (self,"fnord")) status = $lt_dlno_uscore; + else + { + if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore; + else puts (dlerror ()); + } + /* dlclose (self); */ + } + else + puts (dlerror ()); + + return status; +}] +_LT_EOF + if AC_TRY_EVAL(ac_link) && test -s "conftest$ac_exeext" 2>/dev/null; then + (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null + lt_status=$? + case x$lt_status in + x$lt_dlno_uscore) $1 ;; + x$lt_dlneed_uscore) $2 ;; + x$lt_dlunknown|x*) $3 ;; + esac + else : + # compilation failed + $3 + fi +fi +rm -fr conftest* +])# _LT_TRY_DLOPEN_SELF + + +# LT_SYS_DLOPEN_SELF +# ------------------ +AC_DEFUN([LT_SYS_DLOPEN_SELF], +[m4_require([_LT_HEADER_DLFCN])dnl +if test yes != "$enable_dlopen"; then + enable_dlopen=unknown + enable_dlopen_self=unknown + enable_dlopen_self_static=unknown +else + lt_cv_dlopen=no + lt_cv_dlopen_libs= + + case $host_os in + beos*) + lt_cv_dlopen=load_add_on + lt_cv_dlopen_libs= + lt_cv_dlopen_self=yes + ;; + + mingw* | pw32* | cegcc*) + lt_cv_dlopen=LoadLibrary + lt_cv_dlopen_libs= + ;; + + cygwin*) + lt_cv_dlopen=dlopen + lt_cv_dlopen_libs= + ;; + + darwin*) + # if libdl is installed we need to link against it + AC_CHECK_LIB([dl], [dlopen], + [lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-ldl],[ + lt_cv_dlopen=dyld + lt_cv_dlopen_libs= + lt_cv_dlopen_self=yes + ]) + ;; + + tpf*) + # Don't try to run any link tests for TPF. We know it's impossible + # because TPF is a cross-compiler, and we know how we open DSOs. + lt_cv_dlopen=dlopen + lt_cv_dlopen_libs= + lt_cv_dlopen_self=no + ;; + + *) + AC_CHECK_FUNC([shl_load], + [lt_cv_dlopen=shl_load], + [AC_CHECK_LIB([dld], [shl_load], + [lt_cv_dlopen=shl_load lt_cv_dlopen_libs=-ldld], + [AC_CHECK_FUNC([dlopen], + [lt_cv_dlopen=dlopen], + [AC_CHECK_LIB([dl], [dlopen], + [lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-ldl], + [AC_CHECK_LIB([svld], [dlopen], + [lt_cv_dlopen=dlopen lt_cv_dlopen_libs=-lsvld], + [AC_CHECK_LIB([dld], [dld_link], + [lt_cv_dlopen=dld_link lt_cv_dlopen_libs=-ldld]) + ]) + ]) + ]) + ]) + ]) + ;; + esac + + if test no = "$lt_cv_dlopen"; then + enable_dlopen=no + else + enable_dlopen=yes + fi + + case $lt_cv_dlopen in + dlopen) + save_CPPFLAGS=$CPPFLAGS + test yes = "$ac_cv_header_dlfcn_h" && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H" + + save_LDFLAGS=$LDFLAGS + wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\" + + save_LIBS=$LIBS + LIBS="$lt_cv_dlopen_libs $LIBS" + + AC_CACHE_CHECK([whether a program can dlopen itself], + lt_cv_dlopen_self, [dnl + _LT_TRY_DLOPEN_SELF( + lt_cv_dlopen_self=yes, lt_cv_dlopen_self=yes, + lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross) + ]) + + if test yes = "$lt_cv_dlopen_self"; then + wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\" + AC_CACHE_CHECK([whether a statically linked program can dlopen itself], + lt_cv_dlopen_self_static, [dnl + _LT_TRY_DLOPEN_SELF( + lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=yes, + lt_cv_dlopen_self_static=no, lt_cv_dlopen_self_static=cross) + ]) + fi + + CPPFLAGS=$save_CPPFLAGS + LDFLAGS=$save_LDFLAGS + LIBS=$save_LIBS + ;; + esac + + case $lt_cv_dlopen_self in + yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;; + *) enable_dlopen_self=unknown ;; + esac + + case $lt_cv_dlopen_self_static in + yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;; + *) enable_dlopen_self_static=unknown ;; + esac +fi +_LT_DECL([dlopen_support], [enable_dlopen], [0], + [Whether dlopen is supported]) +_LT_DECL([dlopen_self], [enable_dlopen_self], [0], + [Whether dlopen of programs is supported]) +_LT_DECL([dlopen_self_static], [enable_dlopen_self_static], [0], + [Whether dlopen of statically linked programs is supported]) +])# LT_SYS_DLOPEN_SELF + +# Old name: +AU_ALIAS([AC_LIBTOOL_DLOPEN_SELF], [LT_SYS_DLOPEN_SELF]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_LIBTOOL_DLOPEN_SELF], []) + + +# _LT_COMPILER_C_O([TAGNAME]) +# --------------------------- +# Check to see if options -c and -o are simultaneously supported by compiler. +# This macro does not hard code the compiler like AC_PROG_CC_C_O. +m4_defun([_LT_COMPILER_C_O], +[m4_require([_LT_DECL_SED])dnl +m4_require([_LT_FILEUTILS_DEFAULTS])dnl +m4_require([_LT_TAG_COMPILER])dnl +AC_CACHE_CHECK([if $compiler supports -c -o file.$ac_objext], + [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)], + [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=no + $RM -r conftest 2>/dev/null + mkdir conftest + cd conftest + mkdir out + echo "$lt_simple_compile_test_code" > conftest.$ac_ext + + lt_compiler_flag="-o out/conftest2.$ac_objext" + # Insert the option either (1) after the last *FLAGS variable, or + # (2) before a word containing "conftest.", or (3) at the end. + # Note that $ac_compile itself does not contain backslashes and begins + # with a dollar sign (not a hyphen), so the echo should work correctly. + lt_compile=`echo "$ac_compile" | $SED \ + -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \ + -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \ + -e 's:$: $lt_compiler_flag:'` + (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD) + (eval "$lt_compile" 2>out/conftest.err) + ac_status=$? + cat out/conftest.err >&AS_MESSAGE_LOG_FD + echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD + if (exit $ac_status) && test -s out/conftest2.$ac_objext + then + # The compiler can only warn and ignore the option if not recognized + # So say no if there are warnings + $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp + $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2 + if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then + _LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes + fi + fi + chmod u+w . 2>&AS_MESSAGE_LOG_FD + $RM conftest* + # SGI C++ compiler will create directory out/ii_files/ for + # template instantiation + test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files + $RM out/* && rmdir out + cd .. + $RM -r conftest + $RM conftest* +]) +_LT_TAGDECL([compiler_c_o], [lt_cv_prog_compiler_c_o], [1], + [Does compiler simultaneously support -c and -o options?]) +])# _LT_COMPILER_C_O + + +# _LT_COMPILER_FILE_LOCKS([TAGNAME]) +# ---------------------------------- +# Check to see if we can do hard links to lock some files if needed +m4_defun([_LT_COMPILER_FILE_LOCKS], +[m4_require([_LT_ENABLE_LOCK])dnl +m4_require([_LT_FILEUTILS_DEFAULTS])dnl +_LT_COMPILER_C_O([$1]) + +hard_links=nottested +if test no = "$_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)" && test no != "$need_locks"; then + # do not overwrite the value of need_locks provided by the user + AC_MSG_CHECKING([if we can lock with hard links]) + hard_links=yes + $RM conftest* + ln conftest.a conftest.b 2>/dev/null && hard_links=no + touch conftest.a + ln conftest.a conftest.b 2>&5 || hard_links=no + ln conftest.a conftest.b 2>/dev/null && hard_links=no + AC_MSG_RESULT([$hard_links]) + if test no = "$hard_links"; then + AC_MSG_WARN(['$CC' does not support '-c -o', so 'make -j' may be unsafe]) + need_locks=warn + fi +else + need_locks=no +fi +_LT_DECL([], [need_locks], [1], [Must we lock files when doing compilation?]) +])# _LT_COMPILER_FILE_LOCKS + + +# _LT_CHECK_OBJDIR +# ---------------- +m4_defun([_LT_CHECK_OBJDIR], +[AC_CACHE_CHECK([for objdir], [lt_cv_objdir], +[rm -f .libs 2>/dev/null +mkdir .libs 2>/dev/null +if test -d .libs; then + lt_cv_objdir=.libs +else + # MS-DOS does not allow filenames that begin with a dot. + lt_cv_objdir=_libs +fi +rmdir .libs 2>/dev/null]) +objdir=$lt_cv_objdir +_LT_DECL([], [objdir], [0], + [The name of the directory that contains temporary libtool files])dnl +m4_pattern_allow([LT_OBJDIR])dnl +AC_DEFINE_UNQUOTED([LT_OBJDIR], "$lt_cv_objdir/", + [Define to the sub-directory where libtool stores uninstalled libraries.]) +])# _LT_CHECK_OBJDIR + + +# _LT_LINKER_HARDCODE_LIBPATH([TAGNAME]) +# -------------------------------------- +# Check hardcoding attributes. +m4_defun([_LT_LINKER_HARDCODE_LIBPATH], +[AC_MSG_CHECKING([how to hardcode library paths into programs]) +_LT_TAGVAR(hardcode_action, $1)= +if test -n "$_LT_TAGVAR(hardcode_libdir_flag_spec, $1)" || + test -n "$_LT_TAGVAR(runpath_var, $1)" || + test yes = "$_LT_TAGVAR(hardcode_automatic, $1)"; then + + # We can hardcode non-existent directories. + if test no != "$_LT_TAGVAR(hardcode_direct, $1)" && + # If the only mechanism to avoid hardcoding is shlibpath_var, we + # have to relink, otherwise we might link with an installed library + # when we should be linking with a yet-to-be-installed one + ## test no != "$_LT_TAGVAR(hardcode_shlibpath_var, $1)" && + test no != "$_LT_TAGVAR(hardcode_minus_L, $1)"; then + # Linking always hardcodes the temporary library directory. + _LT_TAGVAR(hardcode_action, $1)=relink + else + # We can link without hardcoding, and we can hardcode nonexisting dirs. + _LT_TAGVAR(hardcode_action, $1)=immediate + fi +else + # We cannot hardcode anything, or else we can only hardcode existing + # directories. + _LT_TAGVAR(hardcode_action, $1)=unsupported +fi +AC_MSG_RESULT([$_LT_TAGVAR(hardcode_action, $1)]) + +if test relink = "$_LT_TAGVAR(hardcode_action, $1)" || + test yes = "$_LT_TAGVAR(inherit_rpath, $1)"; then + # Fast installation is not supported + enable_fast_install=no +elif test yes = "$shlibpath_overrides_runpath" || + test no = "$enable_shared"; then + # Fast installation is not necessary + enable_fast_install=needless +fi +_LT_TAGDECL([], [hardcode_action], [0], + [How to hardcode a shared library path into an executable]) +])# _LT_LINKER_HARDCODE_LIBPATH + + +# _LT_CMD_STRIPLIB +# ---------------- +m4_defun([_LT_CMD_STRIPLIB], +[m4_require([_LT_DECL_EGREP]) +striplib= +old_striplib= +AC_MSG_CHECKING([whether stripping libraries is possible]) +if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then + test -z "$old_striplib" && old_striplib="$STRIP --strip-debug" + test -z "$striplib" && striplib="$STRIP --strip-unneeded" + AC_MSG_RESULT([yes]) +else +# FIXME - insert some real tests, host_os isn't really good enough + case $host_os in + darwin*) + if test -n "$STRIP"; then + striplib="$STRIP -x" + old_striplib="$STRIP -S" + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi + ;; + *) + AC_MSG_RESULT([no]) + ;; + esac +fi +_LT_DECL([], [old_striplib], [1], [Commands to strip libraries]) +_LT_DECL([], [striplib], [1]) +])# _LT_CMD_STRIPLIB + + +# _LT_PREPARE_MUNGE_PATH_LIST +# --------------------------- +# Make sure func_munge_path_list() is defined correctly. +m4_defun([_LT_PREPARE_MUNGE_PATH_LIST], +[[# func_munge_path_list VARIABLE PATH +# ----------------------------------- +# VARIABLE is name of variable containing _space_ separated list of +# directories to be munged by the contents of PATH, which is string +# having a format: +# "DIR[:DIR]:" +# string "DIR[ DIR]" will be prepended to VARIABLE +# ":DIR[:DIR]" +# string "DIR[ DIR]" will be appended to VARIABLE +# "DIRP[:DIRP]::[DIRA:]DIRA" +# string "DIRP[ DIRP]" will be prepended to VARIABLE and string +# "DIRA[ DIRA]" will be appended to VARIABLE +# "DIR[:DIR]" +# VARIABLE will be replaced by "DIR[ DIR]" +func_munge_path_list () +{ + case x@S|@2 in + x) + ;; + *:) + eval @S|@1=\"`$ECHO @S|@2 | $SED 's/:/ /g'` \@S|@@S|@1\" + ;; + x:*) + eval @S|@1=\"\@S|@@S|@1 `$ECHO @S|@2 | $SED 's/:/ /g'`\" + ;; + *::*) + eval @S|@1=\"\@S|@@S|@1\ `$ECHO @S|@2 | $SED -e 's/.*:://' -e 's/:/ /g'`\" + eval @S|@1=\"`$ECHO @S|@2 | $SED -e 's/::.*//' -e 's/:/ /g'`\ \@S|@@S|@1\" + ;; + *) + eval @S|@1=\"`$ECHO @S|@2 | $SED 's/:/ /g'`\" + ;; + esac +} +]])# _LT_PREPARE_PATH_LIST + + +# _LT_SYS_DYNAMIC_LINKER([TAG]) +# ----------------------------- +# PORTME Fill in your ld.so characteristics +m4_defun([_LT_SYS_DYNAMIC_LINKER], +[AC_REQUIRE([AC_CANONICAL_HOST])dnl +m4_require([_LT_DECL_EGREP])dnl +m4_require([_LT_FILEUTILS_DEFAULTS])dnl +m4_require([_LT_DECL_OBJDUMP])dnl +m4_require([_LT_DECL_SED])dnl +m4_require([_LT_CHECK_SHELL_FEATURES])dnl +m4_require([_LT_PREPARE_MUNGE_PATH_LIST])dnl +AC_MSG_CHECKING([dynamic linker characteristics]) +m4_if([$1], + [], [ +if test yes = "$GCC"; then + case $host_os in + darwin*) lt_awk_arg='/^libraries:/,/LR/' ;; + *) lt_awk_arg='/^libraries:/' ;; + esac + case $host_os in + mingw* | cegcc*) lt_sed_strip_eq='s|=\([[A-Za-z]]:\)|\1|g' ;; + *) lt_sed_strip_eq='s|=/|/|g' ;; + esac + lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq` + case $lt_search_path_spec in + *\;*) + # if the path contains ";" then we assume it to be the separator + # otherwise default to the standard path separator (i.e. ":") - it is + # assumed that no part of a normal pathname contains ";" but that should + # okay in the real world where ";" in dirpaths is itself problematic. + lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED 's/;/ /g'` + ;; + *) + lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED "s/$PATH_SEPARATOR/ /g"` + ;; + esac + # Ok, now we have the path, separated by spaces, we can step through it + # and add multilib dir if necessary... + lt_tmp_lt_search_path_spec= + lt_multi_os_dir=/`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null` + # ...but if some path component already ends with the multilib dir we assume + # that all is fine and trust -print-search-dirs as is (GCC 4.2? or newer). + case "$lt_multi_os_dir; $lt_search_path_spec " in + "/; "* | "/.; "* | "/./; "* | *"$lt_multi_os_dir "* | *"$lt_multi_os_dir/ "*) + lt_multi_os_dir= + ;; + esac + for lt_sys_path in $lt_search_path_spec; do + if test -d "$lt_sys_path$lt_multi_os_dir"; then + lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path$lt_multi_os_dir" + elif test -n "$lt_multi_os_dir"; then + test -d "$lt_sys_path" && \ + lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path" + fi + done + lt_search_path_spec=`$ECHO "$lt_tmp_lt_search_path_spec" | awk ' +BEGIN {RS = " "; FS = "/|\n";} { + lt_foo = ""; + lt_count = 0; + for (lt_i = NF; lt_i > 0; lt_i--) { + if ($lt_i != "" && $lt_i != ".") { + if ($lt_i == "..") { + lt_count++; + } else { + if (lt_count == 0) { + lt_foo = "/" $lt_i lt_foo; + } else { + lt_count--; + } + } + } + } + if (lt_foo != "") { lt_freq[[lt_foo]]++; } + if (lt_freq[[lt_foo]] == 1) { print lt_foo; } +}'` + # AWK program above erroneously prepends '/' to C:/dos/paths + # for these hosts. + case $host_os in + mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\ + $SED 's|/\([[A-Za-z]]:\)|\1|g'` ;; + esac + sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP` +else + sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib" +fi]) +library_names_spec= +libname_spec='lib$name' +soname_spec= +shrext_cmds=.so +postinstall_cmds= +postuninstall_cmds= +finish_cmds= +finish_eval= +shlibpath_var= +shlibpath_overrides_runpath=unknown +version_type=none +dynamic_linker="$host_os ld.so" +sys_lib_dlsearch_path_spec="/lib /usr/lib" +need_lib_prefix=unknown +hardcode_into_libs=no + +# when you set need_version to no, make sure it does not cause -set_version +# flags to be left without arguments +need_version=unknown + +AC_ARG_VAR([LT_SYS_LIBRARY_PATH], +[User-defined run-time library search path.]) + +case $host_os in +aix3*) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname.a' + shlibpath_var=LIBPATH + + # AIX 3 has no versioning support, so we append a major version to the name. + soname_spec='$libname$release$shared_ext$major' + ;; + +aix[[4-9]]*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + hardcode_into_libs=yes + if test ia64 = "$host_cpu"; then + # AIX 5 supports IA64 + library_names_spec='$libname$release$shared_ext$major $libname$release$shared_ext$versuffix $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + else + # With GCC up to 2.95.x, collect2 would create an import file + # for dependence libraries. The import file would start with + # the line '#! .'. This would cause the generated library to + # depend on '.', always an invalid library. This was fixed in + # development snapshots of GCC prior to 3.0. + case $host_os in + aix4 | aix4.[[01]] | aix4.[[01]].*) + if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)' + echo ' yes ' + echo '#endif'; } | $CC -E - | $GREP yes > /dev/null; then + : + else + can_build_shared=no + fi + ;; + esac + # Using Import Files as archive members, it is possible to support + # filename-based versioning of shared library archives on AIX. While + # this would work for both with and without runtime linking, it will + # prevent static linking of such archives. So we do filename-based + # shared library versioning with .so extension only, which is used + # when both runtime linking and shared linking is enabled. + # Unfortunately, runtime linking may impact performance, so we do + # not want this to be the default eventually. Also, we use the + # versioned .so libs for executables only if there is the -brtl + # linker flag in LDFLAGS as well, or --with-aix-soname=svr4 only. + # To allow for filename-based versioning support, we need to create + # libNAME.so.V as an archive file, containing: + # *) an Import File, referring to the versioned filename of the + # archive as well as the shared archive member, telling the + # bitwidth (32 or 64) of that shared object, and providing the + # list of exported symbols of that shared object, eventually + # decorated with the 'weak' keyword + # *) the shared object with the F_LOADONLY flag set, to really avoid + # it being seen by the linker. + # At run time we better use the real file rather than another symlink, + # but for link time we create the symlink libNAME.so -> libNAME.so.V + + case $with_aix_soname,$aix_use_runtimelinking in + # AIX (on Power*) has no versioning support, so currently we cannot hardcode correct + # soname into executable. Probably we can add versioning support to + # collect2, so additional links can be useful in future. + aix,yes) # traditional libtool + dynamic_linker='AIX unversionable lib.so' + # If using run time linking (on AIX 4.2 or later) use lib.so + # instead of lib.a to let people know that these are not + # typical AIX shared libraries. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + ;; + aix,no) # traditional AIX only + dynamic_linker='AIX lib.a[(]lib.so.V[)]' + # We preserve .a as extension for shared libraries through AIX4.2 + # and later when we are not doing run time linking. + library_names_spec='$libname$release.a $libname.a' + soname_spec='$libname$release$shared_ext$major' + ;; + svr4,*) # full svr4 only + dynamic_linker="AIX lib.so.V[(]$shared_archive_member_spec.o[)]" + library_names_spec='$libname$release$shared_ext$major $libname$shared_ext' + # We do not specify a path in Import Files, so LIBPATH fires. + shlibpath_overrides_runpath=yes + ;; + *,yes) # both, prefer svr4 + dynamic_linker="AIX lib.so.V[(]$shared_archive_member_spec.o[)], lib.a[(]lib.so.V[)]" + library_names_spec='$libname$release$shared_ext$major $libname$shared_ext' + # unpreferred sharedlib libNAME.a needs extra handling + postinstall_cmds='test -n "$linkname" || linkname="$realname"~func_stripname "" ".so" "$linkname"~$install_shared_prog "$dir/$func_stripname_result.$libext" "$destdir/$func_stripname_result.$libext"~test -z "$tstripme" || test -z "$striplib" || $striplib "$destdir/$func_stripname_result.$libext"' + postuninstall_cmds='for n in $library_names $old_library; do :; done~func_stripname "" ".so" "$n"~test "$func_stripname_result" = "$n" || func_append rmfiles " $odir/$func_stripname_result.$libext"' + # We do not specify a path in Import Files, so LIBPATH fires. + shlibpath_overrides_runpath=yes + ;; + *,no) # both, prefer aix + dynamic_linker="AIX lib.a[(]lib.so.V[)], lib.so.V[(]$shared_archive_member_spec.o[)]" + library_names_spec='$libname$release.a $libname.a' + soname_spec='$libname$release$shared_ext$major' + # unpreferred sharedlib libNAME.so.V and symlink libNAME.so need extra handling + postinstall_cmds='test -z "$dlname" || $install_shared_prog $dir/$dlname $destdir/$dlname~test -z "$tstripme" || test -z "$striplib" || $striplib $destdir/$dlname~test -n "$linkname" || linkname=$realname~func_stripname "" ".a" "$linkname"~(cd "$destdir" && $LN_S -f $dlname $func_stripname_result.so)' + postuninstall_cmds='test -z "$dlname" || func_append rmfiles " $odir/$dlname"~for n in $old_library $library_names; do :; done~func_stripname "" ".a" "$n"~func_append rmfiles " $odir/$func_stripname_result.so"' + ;; + esac + shlibpath_var=LIBPATH + fi + ;; + +amigaos*) + case $host_cpu in + powerpc) + # Since July 2007 AmigaOS4 officially supports .so libraries. + # When compiling the executable, add -use-dynld -Lsobjs: to the compileline. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + ;; + m68k) + library_names_spec='$libname.ixlibrary $libname.a' + # Create ${libname}_ixlibrary.a entries in /sys/libs. + finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([[^/]]*\)\.ixlibrary$%\1%'\''`; $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done' + ;; + esac + ;; + +beos*) + library_names_spec='$libname$shared_ext' + dynamic_linker="$host_os ld.so" + shlibpath_var=LIBRARY_PATH + ;; + +bsdi[[45]]*) + version_type=linux # correct to gnu/linux during the next big refactor + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir' + shlibpath_var=LD_LIBRARY_PATH + sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib" + sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib" + # the default ld.so.conf also contains /usr/contrib/lib and + # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow + # libtool to hard-code these into programs + ;; + +cygwin* | mingw* | pw32* | cegcc*) + version_type=windows + shrext_cmds=.dll + need_version=no + need_lib_prefix=no + + case $GCC,$cc_basename in + yes,*) + # gcc + library_names_spec='$libname.dll.a' + # DLL is installed to $(libdir)/../bin by postinstall_cmds + postinstall_cmds='base_file=`basename \$file`~ + dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; echo \$dlname'\''`~ + dldir=$destdir/`dirname \$dlpath`~ + test -d \$dldir || mkdir -p \$dldir~ + $install_prog $dir/$dlname \$dldir/$dlname~ + chmod a+x \$dldir/$dlname~ + if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then + eval '\''$striplib \$dldir/$dlname'\'' || exit \$?; + fi' + postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~ + dlpath=$dir/\$dldll~ + $RM \$dlpath' + shlibpath_overrides_runpath=yes + + case $host_os in + cygwin*) + # Cygwin DLLs use 'cyg' prefix rather than 'lib' + soname_spec='`echo $libname | sed -e 's/^lib/cyg/'``echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext' +m4_if([$1], [],[ + sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"]) + ;; + mingw* | cegcc*) + # MinGW DLLs use traditional 'lib' prefix + soname_spec='$libname`echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext' + ;; + pw32*) + # pw32 DLLs use 'pw' prefix rather than 'lib' + library_names_spec='`echo $libname | sed -e 's/^lib/pw/'``echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext' + ;; + esac + dynamic_linker='Win32 ld.exe' + ;; + + *,cl*) + # Native MSVC + libname_spec='$name' + soname_spec='$libname`echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext' + library_names_spec='$libname.dll.lib' + + case $build_os in + mingw*) + sys_lib_search_path_spec= + lt_save_ifs=$IFS + IFS=';' + for lt_path in $LIB + do + IFS=$lt_save_ifs + # Let DOS variable expansion print the short 8.3 style file name. + lt_path=`cd "$lt_path" 2>/dev/null && cmd //C "for %i in (".") do @echo %~si"` + sys_lib_search_path_spec="$sys_lib_search_path_spec $lt_path" + done + IFS=$lt_save_ifs + # Convert to MSYS style. + sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([[a-zA-Z]]\\):| /\\1|g' -e 's|^ ||'` + ;; + cygwin*) + # Convert to unix form, then to dos form, then back to unix form + # but this time dos style (no spaces!) so that the unix form looks + # like /cygdrive/c/PROGRA~1:/cygdr... + sys_lib_search_path_spec=`cygpath --path --unix "$LIB"` + sys_lib_search_path_spec=`cygpath --path --dos "$sys_lib_search_path_spec" 2>/dev/null` + sys_lib_search_path_spec=`cygpath --path --unix "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"` + ;; + *) + sys_lib_search_path_spec=$LIB + if $ECHO "$sys_lib_search_path_spec" | [$GREP ';[c-zC-Z]:/' >/dev/null]; then + # It is most probably a Windows format PATH. + sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'` + else + sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"` + fi + # FIXME: find the short name or the path components, as spaces are + # common. (e.g. "Program Files" -> "PROGRA~1") + ;; + esac + + # DLL is installed to $(libdir)/../bin by postinstall_cmds + postinstall_cmds='base_file=`basename \$file`~ + dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; echo \$dlname'\''`~ + dldir=$destdir/`dirname \$dlpath`~ + test -d \$dldir || mkdir -p \$dldir~ + $install_prog $dir/$dlname \$dldir/$dlname' + postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~ + dlpath=$dir/\$dldll~ + $RM \$dlpath' + shlibpath_overrides_runpath=yes + dynamic_linker='Win32 link.exe' + ;; + + *) + # Assume MSVC wrapper + library_names_spec='$libname`echo $release | $SED -e 's/[[.]]/-/g'`$versuffix$shared_ext $libname.lib' + dynamic_linker='Win32 ld.exe' + ;; + esac + # FIXME: first we should search . and the directory the executable is in + shlibpath_var=PATH + ;; + +darwin* | rhapsody*) + dynamic_linker="$host_os dyld" + version_type=darwin + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$major$shared_ext $libname$shared_ext' + soname_spec='$libname$release$major$shared_ext' + shlibpath_overrides_runpath=yes + shlibpath_var=DYLD_LIBRARY_PATH + shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`' +m4_if([$1], [],[ + sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"]) + sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib' + ;; + +dgux*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + ;; + +freebsd* | dragonfly*) + # DragonFly does not have aout. When/if they implement a new + # versioning mechanism, adjust this. + if test -x /usr/bin/objformat; then + objformat=`/usr/bin/objformat` + else + case $host_os in + freebsd[[23]].*) objformat=aout ;; + *) objformat=elf ;; + esac + fi + version_type=freebsd-$objformat + case $version_type in + freebsd-elf*) + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + need_version=no + need_lib_prefix=no + ;; + freebsd-*) + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + need_version=yes + ;; + esac + shlibpath_var=LD_LIBRARY_PATH + case $host_os in + freebsd2.*) + shlibpath_overrides_runpath=yes + ;; + freebsd3.[[01]]* | freebsdelf3.[[01]]*) + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + ;; + freebsd3.[[2-9]]* | freebsdelf3.[[2-9]]* | \ + freebsd4.[[0-5]] | freebsdelf4.[[0-5]] | freebsd4.1.1 | freebsdelf4.1.1) + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + ;; + *) # from 4.6 on, and DragonFly + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + ;; + esac + ;; + +haiku*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + dynamic_linker="$host_os runtime_loader" + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LIBRARY_PATH + shlibpath_overrides_runpath=no + sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/system/lib' + hardcode_into_libs=yes + ;; + +hpux9* | hpux10* | hpux11*) + # Give a soname corresponding to the major version so that dld.sl refuses to + # link against other versions. + version_type=sunos + need_lib_prefix=no + need_version=no + case $host_cpu in + ia64*) + shrext_cmds='.so' + hardcode_into_libs=yes + dynamic_linker="$host_os dld.so" + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes # Unless +noenvvar is specified. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + if test 32 = "$HPUX_IA64_MODE"; then + sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib" + sys_lib_dlsearch_path_spec=/usr/lib/hpux32 + else + sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64" + sys_lib_dlsearch_path_spec=/usr/lib/hpux64 + fi + ;; + hppa*64*) + shrext_cmds='.sl' + hardcode_into_libs=yes + dynamic_linker="$host_os dld.sl" + shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH + shlibpath_overrides_runpath=yes # Unless +noenvvar is specified. + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64" + sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec + ;; + *) + shrext_cmds='.sl' + dynamic_linker="$host_os dld.sl" + shlibpath_var=SHLIB_PATH + shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + ;; + esac + # HP-UX runs *really* slowly unless shared libraries are mode 555, ... + postinstall_cmds='chmod 555 $lib' + # or fails outright, so override atomically: + install_override_mode=555 + ;; + +interix[[3-9]]*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + ;; + +irix5* | irix6* | nonstopux*) + case $host_os in + nonstopux*) version_type=nonstopux ;; + *) + if test yes = "$lt_cv_prog_gnu_ld"; then + version_type=linux # correct to gnu/linux during the next big refactor + else + version_type=irix + fi ;; + esac + need_lib_prefix=no + need_version=no + soname_spec='$libname$release$shared_ext$major' + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$release$shared_ext $libname$shared_ext' + case $host_os in + irix5* | nonstopux*) + libsuff= shlibsuff= + ;; + *) + case $LD in # libtool.m4 will add one of these switches to LD + *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ") + libsuff= shlibsuff= libmagic=32-bit;; + *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ") + libsuff=32 shlibsuff=N32 libmagic=N32;; + *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ") + libsuff=64 shlibsuff=64 libmagic=64-bit;; + *) libsuff= shlibsuff= libmagic=never-match;; + esac + ;; + esac + shlibpath_var=LD_LIBRARY${shlibsuff}_PATH + shlibpath_overrides_runpath=no + sys_lib_search_path_spec="/usr/lib$libsuff /lib$libsuff /usr/local/lib$libsuff" + sys_lib_dlsearch_path_spec="/usr/lib$libsuff /lib$libsuff" + hardcode_into_libs=yes + ;; + +# No shared lib support for Linux oldld, aout, or coff. +linux*oldld* | linux*aout* | linux*coff*) + dynamic_linker=no + ;; + +linux*android*) + version_type=none # Android doesn't support versioned libraries. + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext' + soname_spec='$libname$release$shared_ext' + finish_cmds= + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + + # This implies no fast_install, which is unacceptable. + # Some rework will be needed to allow for fast_install + # before this can be enabled. + hardcode_into_libs=yes + + dynamic_linker='Android linker' + # Don't embed -rpath directories since the linker doesn't support them. + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + ;; + +# This must be glibc/ELF. +linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + + # Some binutils ld are patched to set DT_RUNPATH + AC_CACHE_VAL([lt_cv_shlibpath_overrides_runpath], + [lt_cv_shlibpath_overrides_runpath=no + save_LDFLAGS=$LDFLAGS + save_libdir=$libdir + eval "libdir=/foo; wl=\"$_LT_TAGVAR(lt_prog_compiler_wl, $1)\"; \ + LDFLAGS=\"\$LDFLAGS $_LT_TAGVAR(hardcode_libdir_flag_spec, $1)\"" + AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])], + [AS_IF([ ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null], + [lt_cv_shlibpath_overrides_runpath=yes])]) + LDFLAGS=$save_LDFLAGS + libdir=$save_libdir + ]) + shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath + + # This implies no fast_install, which is unacceptable. + # Some rework will be needed to allow for fast_install + # before this can be enabled. + hardcode_into_libs=yes + + # Ideally, we could use ldconfig to report *all* directores which are + # searched for libraries, however this is still not possible. Aside from not + # being certain /sbin/ldconfig is available, command + # 'ldconfig -N -X -v | grep ^/' on 64bit Fedora does not report /usr/lib64, + # even though it is searched at run-time. Try to do the best guess by + # appending ld.so.conf contents (and includes) to the search path. + if test -f /etc/ld.so.conf; then + lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '` + sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra" + fi + + # We used to test for /lib/ld.so.1 and disable shared libraries on + # powerpc, because MkLinux only supported shared libraries with the + # GNU dynamic linker. Since this was broken with cross compilers, + # most powerpc-linux boxes support dynamic linking these days and + # people can always --disable-shared, the test was removed, and we + # assume the GNU/Linux dynamic linker is in use. + dynamic_linker='GNU/Linux ld.so' + ;; + +netbsd*) + version_type=sunos + need_lib_prefix=no + need_version=no + if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir' + dynamic_linker='NetBSD (a.out) ld.so' + else + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + dynamic_linker='NetBSD ld.elf_so' + fi + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + ;; + +newsos6) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + ;; + +*nto* | *qnx*) + version_type=qnx + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + dynamic_linker='ldqnx.so' + ;; + +openbsd* | bitrig*) + version_type=sunos + sys_lib_dlsearch_path_spec=/usr/lib + need_lib_prefix=no + if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then + need_version=no + else + need_version=yes + fi + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + ;; + +os2*) + libname_spec='$name' + version_type=windows + shrext_cmds=.dll + need_version=no + need_lib_prefix=no + # OS/2 can only load a DLL with a base name of 8 characters or less. + soname_spec='`test -n "$os2dllname" && libname="$os2dllname"; + v=$($ECHO $release$versuffix | tr -d .-); + n=$($ECHO $libname | cut -b -$((8 - ${#v})) | tr . _); + $ECHO $n$v`$shared_ext' + library_names_spec='${libname}_dll.$libext' + dynamic_linker='OS/2 ld.exe' + shlibpath_var=BEGINLIBPATH + sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib" + sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec + postinstall_cmds='base_file=`basename \$file`~ + dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\$base_file'\''i; $ECHO \$dlname'\''`~ + dldir=$destdir/`dirname \$dlpath`~ + test -d \$dldir || mkdir -p \$dldir~ + $install_prog $dir/$dlname \$dldir/$dlname~ + chmod a+x \$dldir/$dlname~ + if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then + eval '\''$striplib \$dldir/$dlname'\'' || exit \$?; + fi' + postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; $ECHO \$dlname'\''`~ + dlpath=$dir/\$dldll~ + $RM \$dlpath' + ;; + +osf3* | osf4* | osf5*) + version_type=osf + need_lib_prefix=no + need_version=no + soname_spec='$libname$release$shared_ext$major' + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib" + sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec + ;; + +rdos*) + dynamic_linker=no + ;; + +solaris*) + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + # ldd complains unless libraries are executable + postinstall_cmds='chmod +x $lib' + ;; + +sunos4*) + version_type=sunos + library_names_spec='$libname$release$shared_ext$versuffix $libname$shared_ext$versuffix' + finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + if test yes = "$with_gnu_ld"; then + need_lib_prefix=no + fi + need_version=yes + ;; + +sysv4 | sysv4.3*) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + case $host_vendor in + sni) + shlibpath_overrides_runpath=no + need_lib_prefix=no + runpath_var=LD_RUN_PATH + ;; + siemens) + need_lib_prefix=no + ;; + motorola) + need_lib_prefix=no + need_version=no + shlibpath_overrides_runpath=no + sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib' + ;; + esac + ;; + +sysv4*MP*) + if test -d /usr/nec; then + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$shared_ext.$versuffix $libname$shared_ext.$major $libname$shared_ext' + soname_spec='$libname$shared_ext.$major' + shlibpath_var=LD_LIBRARY_PATH + fi + ;; + +sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) + version_type=sco + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=yes + hardcode_into_libs=yes + if test yes = "$with_gnu_ld"; then + sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib' + else + sys_lib_search_path_spec='/usr/ccs/lib /usr/lib' + case $host_os in + sco3.2v5*) + sys_lib_search_path_spec="$sys_lib_search_path_spec /lib" + ;; + esac + fi + sys_lib_dlsearch_path_spec='/usr/lib' + ;; + +tpf*) + # TPF is a cross-target only. Preferred cross-host = GNU/Linux. + version_type=linux # correct to gnu/linux during the next big refactor + need_lib_prefix=no + need_version=no + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + shlibpath_var=LD_LIBRARY_PATH + shlibpath_overrides_runpath=no + hardcode_into_libs=yes + ;; + +uts4*) + version_type=linux # correct to gnu/linux during the next big refactor + library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext' + soname_spec='$libname$release$shared_ext$major' + shlibpath_var=LD_LIBRARY_PATH + ;; + +*) + dynamic_linker=no + ;; +esac +AC_MSG_RESULT([$dynamic_linker]) +test no = "$dynamic_linker" && can_build_shared=no + +variables_saved_for_relink="PATH $shlibpath_var $runpath_var" +if test yes = "$GCC"; then + variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH" +fi + +if test set = "${lt_cv_sys_lib_search_path_spec+set}"; then + sys_lib_search_path_spec=$lt_cv_sys_lib_search_path_spec +fi + +if test set = "${lt_cv_sys_lib_dlsearch_path_spec+set}"; then + sys_lib_dlsearch_path_spec=$lt_cv_sys_lib_dlsearch_path_spec +fi + +# remember unaugmented sys_lib_dlsearch_path content for libtool script decls... +configure_time_dlsearch_path=$sys_lib_dlsearch_path_spec + +# ... but it needs LT_SYS_LIBRARY_PATH munging for other configure-time code +func_munge_path_list sys_lib_dlsearch_path_spec "$LT_SYS_LIBRARY_PATH" + +# to be used as default LT_SYS_LIBRARY_PATH value in generated libtool +configure_time_lt_sys_library_path=$LT_SYS_LIBRARY_PATH + +_LT_DECL([], [variables_saved_for_relink], [1], + [Variables whose values should be saved in libtool wrapper scripts and + restored at link time]) +_LT_DECL([], [need_lib_prefix], [0], + [Do we need the "lib" prefix for modules?]) +_LT_DECL([], [need_version], [0], [Do we need a version for libraries?]) +_LT_DECL([], [version_type], [0], [Library versioning type]) +_LT_DECL([], [runpath_var], [0], [Shared library runtime path variable]) +_LT_DECL([], [shlibpath_var], [0],[Shared library path variable]) +_LT_DECL([], [shlibpath_overrides_runpath], [0], + [Is shlibpath searched before the hard-coded library search path?]) +_LT_DECL([], [libname_spec], [1], [Format of library name prefix]) +_LT_DECL([], [library_names_spec], [1], + [[List of archive names. First name is the real one, the rest are links. + The last name is the one that the linker finds with -lNAME]]) +_LT_DECL([], [soname_spec], [1], + [[The coded name of the library, if different from the real name]]) +_LT_DECL([], [install_override_mode], [1], + [Permission mode override for installation of shared libraries]) +_LT_DECL([], [postinstall_cmds], [2], + [Command to use after installation of a shared archive]) +_LT_DECL([], [postuninstall_cmds], [2], + [Command to use after uninstallation of a shared archive]) +_LT_DECL([], [finish_cmds], [2], + [Commands used to finish a libtool library installation in a directory]) +_LT_DECL([], [finish_eval], [1], + [[As "finish_cmds", except a single script fragment to be evaled but + not shown]]) +_LT_DECL([], [hardcode_into_libs], [0], + [Whether we should hardcode library paths into libraries]) +_LT_DECL([], [sys_lib_search_path_spec], [2], + [Compile-time system search path for libraries]) +_LT_DECL([sys_lib_dlsearch_path_spec], [configure_time_dlsearch_path], [2], + [Detected run-time system search path for libraries]) +_LT_DECL([], [configure_time_lt_sys_library_path], [2], + [Explicit LT_SYS_LIBRARY_PATH set during ./configure time]) +])# _LT_SYS_DYNAMIC_LINKER + + +# _LT_PATH_TOOL_PREFIX(TOOL) +# -------------------------- +# find a file program that can recognize shared library +AC_DEFUN([_LT_PATH_TOOL_PREFIX], +[m4_require([_LT_DECL_EGREP])dnl +AC_MSG_CHECKING([for $1]) +AC_CACHE_VAL(lt_cv_path_MAGIC_CMD, +[case $MAGIC_CMD in +[[\\/*] | ?:[\\/]*]) + lt_cv_path_MAGIC_CMD=$MAGIC_CMD # Let the user override the test with a path. + ;; +*) + lt_save_MAGIC_CMD=$MAGIC_CMD + lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR +dnl $ac_dummy forces splitting on constant user-supplied paths. +dnl POSIX.2 word splitting is done only on the output of word expansions, +dnl not every word. This closes a longstanding sh security hole. + ac_dummy="m4_if([$2], , $PATH, [$2])" + for ac_dir in $ac_dummy; do + IFS=$lt_save_ifs + test -z "$ac_dir" && ac_dir=. + if test -f "$ac_dir/$1"; then + lt_cv_path_MAGIC_CMD=$ac_dir/"$1" + if test -n "$file_magic_test_file"; then + case $deplibs_check_method in + "file_magic "*) + file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"` + MAGIC_CMD=$lt_cv_path_MAGIC_CMD + if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null | + $EGREP "$file_magic_regex" > /dev/null; then + : + else + cat <<_LT_EOF 1>&2 + +*** Warning: the command libtool uses to detect shared libraries, +*** $file_magic_cmd, produces output that libtool cannot recognize. +*** The result is that libtool may fail to recognize shared libraries +*** as such. This will affect the creation of libtool libraries that +*** depend on shared libraries, but programs linked with such libtool +*** libraries will work regardless of this problem. Nevertheless, you +*** may want to report the problem to your system manager and/or to +*** bug-libtool@gnu.org + +_LT_EOF + fi ;; + esac + fi + break + fi + done + IFS=$lt_save_ifs + MAGIC_CMD=$lt_save_MAGIC_CMD + ;; +esac]) +MAGIC_CMD=$lt_cv_path_MAGIC_CMD +if test -n "$MAGIC_CMD"; then + AC_MSG_RESULT($MAGIC_CMD) +else + AC_MSG_RESULT(no) +fi +_LT_DECL([], [MAGIC_CMD], [0], + [Used to examine libraries when file_magic_cmd begins with "file"])dnl +])# _LT_PATH_TOOL_PREFIX + +# Old name: +AU_ALIAS([AC_PATH_TOOL_PREFIX], [_LT_PATH_TOOL_PREFIX]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_PATH_TOOL_PREFIX], []) + + +# _LT_PATH_MAGIC +# -------------- +# find a file program that can recognize a shared library +m4_defun([_LT_PATH_MAGIC], +[_LT_PATH_TOOL_PREFIX(${ac_tool_prefix}file, /usr/bin$PATH_SEPARATOR$PATH) +if test -z "$lt_cv_path_MAGIC_CMD"; then + if test -n "$ac_tool_prefix"; then + _LT_PATH_TOOL_PREFIX(file, /usr/bin$PATH_SEPARATOR$PATH) + else + MAGIC_CMD=: + fi +fi +])# _LT_PATH_MAGIC + + +# LT_PATH_LD +# ---------- +# find the pathname to the GNU or non-GNU linker +AC_DEFUN([LT_PATH_LD], +[AC_REQUIRE([AC_PROG_CC])dnl +AC_REQUIRE([AC_CANONICAL_HOST])dnl +AC_REQUIRE([AC_CANONICAL_BUILD])dnl +m4_require([_LT_DECL_SED])dnl +m4_require([_LT_DECL_EGREP])dnl +m4_require([_LT_PROG_ECHO_BACKSLASH])dnl + +AC_ARG_WITH([gnu-ld], + [AS_HELP_STRING([--with-gnu-ld], + [assume the C compiler uses GNU ld @<:@default=no@:>@])], + [test no = "$withval" || with_gnu_ld=yes], + [with_gnu_ld=no])dnl + +ac_prog=ld +if test yes = "$GCC"; then + # Check if gcc -print-prog-name=ld gives a path. + AC_MSG_CHECKING([for ld used by $CC]) + case $host in + *-*-mingw*) + # gcc leaves a trailing carriage return, which upsets mingw + ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; + *) + ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; + esac + case $ac_prog in + # Accept absolute paths. + [[\\/]]* | ?:[[\\/]]*) + re_direlt='/[[^/]][[^/]]*/\.\./' + # Canonicalize the pathname of ld + ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'` + while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do + ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"` + done + test -z "$LD" && LD=$ac_prog + ;; + "") + # If it fails, then pretend we aren't using GCC. + ac_prog=ld + ;; + *) + # If it is relative, then search for the first ld in PATH. + with_gnu_ld=unknown + ;; + esac +elif test yes = "$with_gnu_ld"; then + AC_MSG_CHECKING([for GNU ld]) +else + AC_MSG_CHECKING([for non-GNU ld]) +fi +AC_CACHE_VAL(lt_cv_path_LD, +[if test -z "$LD"; then + lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR + for ac_dir in $PATH; do + IFS=$lt_save_ifs + test -z "$ac_dir" && ac_dir=. + if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then + lt_cv_path_LD=$ac_dir/$ac_prog + # Check to see if the program is GNU ld. I'd rather use --version, + # but apparently some variants of GNU ld only accept -v. + # Break only if it was the GNU/non-GNU ld that we prefer. + case `"$lt_cv_path_LD" -v 2>&1 &1 conftest.i +cat conftest.i conftest.i >conftest2.i +: ${lt_DD:=$DD} +AC_PATH_PROGS_FEATURE_CHECK([lt_DD], [dd], +[if "$ac_path_lt_DD" bs=32 count=1 conftest.out 2>/dev/null; then + cmp -s conftest.i conftest.out \ + && ac_cv_path_lt_DD="$ac_path_lt_DD" ac_path_lt_DD_found=: +fi]) +rm -f conftest.i conftest2.i conftest.out]) +])# _LT_PATH_DD + + +# _LT_CMD_TRUNCATE +# ---------------- +# find command to truncate a binary pipe +m4_defun([_LT_CMD_TRUNCATE], +[m4_require([_LT_PATH_DD]) +AC_CACHE_CHECK([how to truncate binary pipes], [lt_cv_truncate_bin], +[printf 0123456789abcdef0123456789abcdef >conftest.i +cat conftest.i conftest.i >conftest2.i +lt_cv_truncate_bin= +if "$ac_cv_path_lt_DD" bs=32 count=1 conftest.out 2>/dev/null; then + cmp -s conftest.i conftest.out \ + && lt_cv_truncate_bin="$ac_cv_path_lt_DD bs=4096 count=1" +fi +rm -f conftest.i conftest2.i conftest.out +test -z "$lt_cv_truncate_bin" && lt_cv_truncate_bin="$SED -e 4q"]) +_LT_DECL([lt_truncate_bin], [lt_cv_truncate_bin], [1], + [Command to truncate a binary pipe]) +])# _LT_CMD_TRUNCATE + + +# _LT_CHECK_MAGIC_METHOD +# ---------------------- +# how to check for library dependencies +# -- PORTME fill in with the dynamic library characteristics +m4_defun([_LT_CHECK_MAGIC_METHOD], +[m4_require([_LT_DECL_EGREP]) +m4_require([_LT_DECL_OBJDUMP]) +AC_CACHE_CHECK([how to recognize dependent libraries], +lt_cv_deplibs_check_method, +[lt_cv_file_magic_cmd='$MAGIC_CMD' +lt_cv_file_magic_test_file= +lt_cv_deplibs_check_method='unknown' +# Need to set the preceding variable on all platforms that support +# interlibrary dependencies. +# 'none' -- dependencies not supported. +# 'unknown' -- same as none, but documents that we really don't know. +# 'pass_all' -- all dependencies passed with no checks. +# 'test_compile' -- check by making test program. +# 'file_magic [[regex]]' -- check by looking for files in library path +# that responds to the $file_magic_cmd with a given extended regex. +# If you have 'file' or equivalent on your system and you're not sure +# whether 'pass_all' will *always* work, you probably want this one. + +case $host_os in +aix[[4-9]]*) + lt_cv_deplibs_check_method=pass_all + ;; + +beos*) + lt_cv_deplibs_check_method=pass_all + ;; + +bsdi[[45]]*) + lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib)' + lt_cv_file_magic_cmd='/usr/bin/file -L' + lt_cv_file_magic_test_file=/shlib/libc.so + ;; + +cygwin*) + # func_win32_libid is a shell function defined in ltmain.sh + lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL' + lt_cv_file_magic_cmd='func_win32_libid' + ;; + +mingw* | pw32*) + # Base MSYS/MinGW do not provide the 'file' command needed by + # func_win32_libid shell function, so use a weaker test based on 'objdump', + # unless we find 'file', for example because we are cross-compiling. + if ( file / ) >/dev/null 2>&1; then + lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL' + lt_cv_file_magic_cmd='func_win32_libid' + else + # Keep this pattern in sync with the one in func_win32_libid. + lt_cv_deplibs_check_method='file_magic file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' + lt_cv_file_magic_cmd='$OBJDUMP -f' + fi + ;; + +cegcc*) + # use the weaker test based on 'objdump'. See mingw*. + lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?' + lt_cv_file_magic_cmd='$OBJDUMP -f' + ;; + +darwin* | rhapsody*) + lt_cv_deplibs_check_method=pass_all + ;; + +freebsd* | dragonfly*) + if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then + case $host_cpu in + i*86 ) + # Not sure whether the presence of OpenBSD here was a mistake. + # Let's accept both of them until this is cleared up. + lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[[3-9]]86 (compact )?demand paged shared library' + lt_cv_file_magic_cmd=/usr/bin/file + lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*` + ;; + esac + else + lt_cv_deplibs_check_method=pass_all + fi + ;; + +haiku*) + lt_cv_deplibs_check_method=pass_all + ;; + +hpux10.20* | hpux11*) + lt_cv_file_magic_cmd=/usr/bin/file + case $host_cpu in + ia64*) + lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|ELF-[[0-9]][[0-9]]) shared object file - IA64' + lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so + ;; + hppa*64*) + [lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]'] + lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl + ;; + *) + lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|PA-RISC[[0-9]]\.[[0-9]]) shared library' + lt_cv_file_magic_test_file=/usr/lib/libc.sl + ;; + esac + ;; + +interix[[3-9]]*) + # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here + lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|\.a)$' + ;; + +irix5* | irix6* | nonstopux*) + case $LD in + *-32|*"-32 ") libmagic=32-bit;; + *-n32|*"-n32 ") libmagic=N32;; + *-64|*"-64 ") libmagic=64-bit;; + *) libmagic=never-match;; + esac + lt_cv_deplibs_check_method=pass_all + ;; + +# This must be glibc/ELF. +linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) + lt_cv_deplibs_check_method=pass_all + ;; + +netbsd*) + if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then + lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$' + else + lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|_pic\.a)$' + fi + ;; + +newos6*) + lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (executable|dynamic lib)' + lt_cv_file_magic_cmd=/usr/bin/file + lt_cv_file_magic_test_file=/usr/lib/libnls.so + ;; + +*nto* | *qnx*) + lt_cv_deplibs_check_method=pass_all + ;; + +openbsd* | bitrig*) + if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then + lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|\.so|_pic\.a)$' + else + lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$' + fi + ;; + +osf3* | osf4* | osf5*) + lt_cv_deplibs_check_method=pass_all + ;; + +rdos*) + lt_cv_deplibs_check_method=pass_all + ;; + +solaris*) + lt_cv_deplibs_check_method=pass_all + ;; + +sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) + lt_cv_deplibs_check_method=pass_all + ;; + +sysv4 | sysv4.3*) + case $host_vendor in + motorola) + lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib) M[[0-9]][[0-9]]* Version [[0-9]]' + lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*` + ;; + ncr) + lt_cv_deplibs_check_method=pass_all + ;; + sequent) + lt_cv_file_magic_cmd='/bin/file' + lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB (shared object|dynamic lib )' + ;; + sni) + lt_cv_file_magic_cmd='/bin/file' + lt_cv_deplibs_check_method="file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB dynamic lib" + lt_cv_file_magic_test_file=/lib/libc.so + ;; + siemens) + lt_cv_deplibs_check_method=pass_all + ;; + pc) + lt_cv_deplibs_check_method=pass_all + ;; + esac + ;; + +tpf*) + lt_cv_deplibs_check_method=pass_all + ;; +os2*) + lt_cv_deplibs_check_method=pass_all + ;; +esac +]) + +file_magic_glob= +want_nocaseglob=no +if test "$build" = "$host"; then + case $host_os in + mingw* | pw32*) + if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then + want_nocaseglob=yes + else + file_magic_glob=`echo aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ | $SED -e "s/\(..\)/s\/[[\1]]\/[[\1]]\/g;/g"` + fi + ;; + esac +fi + +file_magic_cmd=$lt_cv_file_magic_cmd +deplibs_check_method=$lt_cv_deplibs_check_method +test -z "$deplibs_check_method" && deplibs_check_method=unknown + +_LT_DECL([], [deplibs_check_method], [1], + [Method to check whether dependent libraries are shared objects]) +_LT_DECL([], [file_magic_cmd], [1], + [Command to use when deplibs_check_method = "file_magic"]) +_LT_DECL([], [file_magic_glob], [1], + [How to find potential files when deplibs_check_method = "file_magic"]) +_LT_DECL([], [want_nocaseglob], [1], + [Find potential files using nocaseglob when deplibs_check_method = "file_magic"]) +])# _LT_CHECK_MAGIC_METHOD + + +# LT_PATH_NM +# ---------- +# find the pathname to a BSD- or MS-compatible name lister +AC_DEFUN([LT_PATH_NM], +[AC_REQUIRE([AC_PROG_CC])dnl +AC_CACHE_CHECK([for BSD- or MS-compatible name lister (nm)], lt_cv_path_NM, +[if test -n "$NM"; then + # Let the user override the test. + lt_cv_path_NM=$NM +else + lt_nm_to_check=${ac_tool_prefix}nm + if test -n "$ac_tool_prefix" && test "$build" = "$host"; then + lt_nm_to_check="$lt_nm_to_check nm" + fi + for lt_tmp_nm in $lt_nm_to_check; do + lt_save_ifs=$IFS; IFS=$PATH_SEPARATOR + for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do + IFS=$lt_save_ifs + test -z "$ac_dir" && ac_dir=. + tmp_nm=$ac_dir/$lt_tmp_nm + if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext"; then + # Check to see if the nm accepts a BSD-compat flag. + # Adding the 'sed 1q' prevents false positives on HP-UX, which says: + # nm: unknown option "B" ignored + # Tru64's nm complains that /dev/null is an invalid object file + # MSYS converts /dev/null to NUL, MinGW nm treats NUL as empty + case $build_os in + mingw*) lt_bad_file=conftest.nm/nofile ;; + *) lt_bad_file=/dev/null ;; + esac + case `"$tmp_nm" -B $lt_bad_file 2>&1 | sed '1q'` in + *$lt_bad_file* | *'Invalid file or object type'*) + lt_cv_path_NM="$tmp_nm -B" + break 2 + ;; + *) + case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in + */dev/null*) + lt_cv_path_NM="$tmp_nm -p" + break 2 + ;; + *) + lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but + continue # so that we can try to find one that supports BSD flags + ;; + esac + ;; + esac + fi + done + IFS=$lt_save_ifs + done + : ${lt_cv_path_NM=no} +fi]) +if test no != "$lt_cv_path_NM"; then + NM=$lt_cv_path_NM +else + # Didn't find any BSD compatible name lister, look for dumpbin. + if test -n "$DUMPBIN"; then : + # Let the user override the test. + else + AC_CHECK_TOOLS(DUMPBIN, [dumpbin "link -dump"], :) + case `$DUMPBIN -symbols -headers /dev/null 2>&1 | sed '1q'` in + *COFF*) + DUMPBIN="$DUMPBIN -symbols -headers" + ;; + *) + DUMPBIN=: + ;; + esac + fi + AC_SUBST([DUMPBIN]) + if test : != "$DUMPBIN"; then + NM=$DUMPBIN + fi +fi +test -z "$NM" && NM=nm +AC_SUBST([NM]) +_LT_DECL([], [NM], [1], [A BSD- or MS-compatible name lister])dnl + +AC_CACHE_CHECK([the name lister ($NM) interface], [lt_cv_nm_interface], + [lt_cv_nm_interface="BSD nm" + echo "int some_variable = 0;" > conftest.$ac_ext + (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&AS_MESSAGE_LOG_FD) + (eval "$ac_compile" 2>conftest.err) + cat conftest.err >&AS_MESSAGE_LOG_FD + (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&AS_MESSAGE_LOG_FD) + (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out) + cat conftest.err >&AS_MESSAGE_LOG_FD + (eval echo "\"\$as_me:$LINENO: output\"" >&AS_MESSAGE_LOG_FD) + cat conftest.out >&AS_MESSAGE_LOG_FD + if $GREP 'External.*some_variable' conftest.out > /dev/null; then + lt_cv_nm_interface="MS dumpbin" + fi + rm -f conftest*]) +])# LT_PATH_NM + +# Old names: +AU_ALIAS([AM_PROG_NM], [LT_PATH_NM]) +AU_ALIAS([AC_PROG_NM], [LT_PATH_NM]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AM_PROG_NM], []) +dnl AC_DEFUN([AC_PROG_NM], []) + +# _LT_CHECK_SHAREDLIB_FROM_LINKLIB +# -------------------------------- +# how to determine the name of the shared library +# associated with a specific link library. +# -- PORTME fill in with the dynamic library characteristics +m4_defun([_LT_CHECK_SHAREDLIB_FROM_LINKLIB], +[m4_require([_LT_DECL_EGREP]) +m4_require([_LT_DECL_OBJDUMP]) +m4_require([_LT_DECL_DLLTOOL]) +AC_CACHE_CHECK([how to associate runtime and link libraries], +lt_cv_sharedlib_from_linklib_cmd, +[lt_cv_sharedlib_from_linklib_cmd='unknown' + +case $host_os in +cygwin* | mingw* | pw32* | cegcc*) + # two different shell functions defined in ltmain.sh; + # decide which one to use based on capabilities of $DLLTOOL + case `$DLLTOOL --help 2>&1` in + *--identify-strict*) + lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib + ;; + *) + lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib_fallback + ;; + esac + ;; +*) + # fallback: assume linklib IS sharedlib + lt_cv_sharedlib_from_linklib_cmd=$ECHO + ;; +esac +]) +sharedlib_from_linklib_cmd=$lt_cv_sharedlib_from_linklib_cmd +test -z "$sharedlib_from_linklib_cmd" && sharedlib_from_linklib_cmd=$ECHO + +_LT_DECL([], [sharedlib_from_linklib_cmd], [1], + [Command to associate shared and link libraries]) +])# _LT_CHECK_SHAREDLIB_FROM_LINKLIB + + +# _LT_PATH_MANIFEST_TOOL +# ---------------------- +# locate the manifest tool +m4_defun([_LT_PATH_MANIFEST_TOOL], +[AC_CHECK_TOOL(MANIFEST_TOOL, mt, :) +test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt +AC_CACHE_CHECK([if $MANIFEST_TOOL is a manifest tool], [lt_cv_path_mainfest_tool], + [lt_cv_path_mainfest_tool=no + echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&AS_MESSAGE_LOG_FD + $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out + cat conftest.err >&AS_MESSAGE_LOG_FD + if $GREP 'Manifest Tool' conftest.out > /dev/null; then + lt_cv_path_mainfest_tool=yes + fi + rm -f conftest*]) +if test yes != "$lt_cv_path_mainfest_tool"; then + MANIFEST_TOOL=: +fi +_LT_DECL([], [MANIFEST_TOOL], [1], [Manifest tool])dnl +])# _LT_PATH_MANIFEST_TOOL + + +# _LT_DLL_DEF_P([FILE]) +# --------------------- +# True iff FILE is a Windows DLL '.def' file. +# Keep in sync with func_dll_def_p in the libtool script +AC_DEFUN([_LT_DLL_DEF_P], +[dnl + test DEF = "`$SED -n dnl + -e '\''s/^[[ ]]*//'\'' dnl Strip leading whitespace + -e '\''/^\(;.*\)*$/d'\'' dnl Delete empty lines and comments + -e '\''s/^\(EXPORTS\|LIBRARY\)\([[ ]].*\)*$/DEF/p'\'' dnl + -e q dnl Only consider the first "real" line + $1`" dnl +])# _LT_DLL_DEF_P + + +# LT_LIB_M +# -------- +# check for math library +AC_DEFUN([LT_LIB_M], +[AC_REQUIRE([AC_CANONICAL_HOST])dnl +LIBM= +case $host in +*-*-beos* | *-*-cegcc* | *-*-cygwin* | *-*-haiku* | *-*-pw32* | *-*-darwin*) + # These system don't have libm, or don't need it + ;; +*-ncr-sysv4.3*) + AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM=-lmw) + AC_CHECK_LIB(m, cos, LIBM="$LIBM -lm") + ;; +*) + AC_CHECK_LIB(m, cos, LIBM=-lm) + ;; +esac +AC_SUBST([LIBM]) +])# LT_LIB_M + +# Old name: +AU_ALIAS([AC_CHECK_LIBM], [LT_LIB_M]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_CHECK_LIBM], []) + + +# _LT_COMPILER_NO_RTTI([TAGNAME]) +# ------------------------------- +m4_defun([_LT_COMPILER_NO_RTTI], +[m4_require([_LT_TAG_COMPILER])dnl + +_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)= + +if test yes = "$GCC"; then + case $cc_basename in + nvcc*) + _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -Xcompiler -fno-builtin' ;; + *) + _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin' ;; + esac + + _LT_COMPILER_OPTION([if $compiler supports -fno-rtti -fno-exceptions], + lt_cv_prog_compiler_rtti_exceptions, + [-fno-rtti -fno-exceptions], [], + [_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)="$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1) -fno-rtti -fno-exceptions"]) +fi +_LT_TAGDECL([no_builtin_flag], [lt_prog_compiler_no_builtin_flag], [1], + [Compiler flag to turn off builtin functions]) +])# _LT_COMPILER_NO_RTTI + + +# _LT_CMD_GLOBAL_SYMBOLS +# ---------------------- +m4_defun([_LT_CMD_GLOBAL_SYMBOLS], +[AC_REQUIRE([AC_CANONICAL_HOST])dnl +AC_REQUIRE([AC_PROG_CC])dnl +AC_REQUIRE([AC_PROG_AWK])dnl +AC_REQUIRE([LT_PATH_NM])dnl +AC_REQUIRE([LT_PATH_LD])dnl +m4_require([_LT_DECL_SED])dnl +m4_require([_LT_DECL_EGREP])dnl +m4_require([_LT_TAG_COMPILER])dnl + +# Check for command to grab the raw symbol name followed by C symbol from nm. +AC_MSG_CHECKING([command to parse $NM output from $compiler object]) +AC_CACHE_VAL([lt_cv_sys_global_symbol_pipe], +[ +# These are sane defaults that work on at least a few old systems. +# [They come from Ultrix. What could be older than Ultrix?!! ;)] + +# Character class describing NM global symbol codes. +symcode='[[BCDEGRST]]' + +# Regexp to match symbols that can be accessed directly from C. +sympat='\([[_A-Za-z]][[_A-Za-z0-9]]*\)' + +# Define system-specific variables. +case $host_os in +aix*) + symcode='[[BCDT]]' + ;; +cygwin* | mingw* | pw32* | cegcc*) + symcode='[[ABCDGISTW]]' + ;; +hpux*) + if test ia64 = "$host_cpu"; then + symcode='[[ABCDEGRST]]' + fi + ;; +irix* | nonstopux*) + symcode='[[BCDEGRST]]' + ;; +osf*) + symcode='[[BCDEGQRST]]' + ;; +solaris*) + symcode='[[BDRT]]' + ;; +sco3.2v5*) + symcode='[[DT]]' + ;; +sysv4.2uw2*) + symcode='[[DT]]' + ;; +sysv5* | sco5v6* | unixware* | OpenUNIX*) + symcode='[[ABDT]]' + ;; +sysv4) + symcode='[[DFNSTU]]' + ;; +esac + +# If we're using GNU nm, then use its standard symbol codes. +case `$NM -V 2>&1` in +*GNU* | *'with BFD'*) + symcode='[[ABCDGIRSTW]]' ;; +esac + +if test "$lt_cv_nm_interface" = "MS dumpbin"; then + # Gets list of data symbols to import. + lt_cv_sys_global_symbol_to_import="sed -n -e 's/^I .* \(.*\)$/\1/p'" + # Adjust the below global symbol transforms to fixup imported variables. + lt_cdecl_hook=" -e 's/^I .* \(.*\)$/extern __declspec(dllimport) char \1;/p'" + lt_c_name_hook=" -e 's/^I .* \(.*\)$/ {\"\1\", (void *) 0},/p'" + lt_c_name_lib_hook="\ + -e 's/^I .* \(lib.*\)$/ {\"\1\", (void *) 0},/p'\ + -e 's/^I .* \(.*\)$/ {\"lib\1\", (void *) 0},/p'" +else + # Disable hooks by default. + lt_cv_sys_global_symbol_to_import= + lt_cdecl_hook= + lt_c_name_hook= + lt_c_name_lib_hook= +fi + +# Transform an extracted symbol line into a proper C declaration. +# Some systems (esp. on ia64) link data and code symbols differently, +# so use this general approach. +lt_cv_sys_global_symbol_to_cdecl="sed -n"\ +$lt_cdecl_hook\ +" -e 's/^T .* \(.*\)$/extern int \1();/p'"\ +" -e 's/^$symcode$symcode* .* \(.*\)$/extern char \1;/p'" + +# Transform an extracted symbol line into symbol name and symbol address +lt_cv_sys_global_symbol_to_c_name_address="sed -n"\ +$lt_c_name_hook\ +" -e 's/^: \(.*\) .*$/ {\"\1\", (void *) 0},/p'"\ +" -e 's/^$symcode$symcode* .* \(.*\)$/ {\"\1\", (void *) \&\1},/p'" + +# Transform an extracted symbol line into symbol name with lib prefix and +# symbol address. +lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n"\ +$lt_c_name_lib_hook\ +" -e 's/^: \(.*\) .*$/ {\"\1\", (void *) 0},/p'"\ +" -e 's/^$symcode$symcode* .* \(lib.*\)$/ {\"\1\", (void *) \&\1},/p'"\ +" -e 's/^$symcode$symcode* .* \(.*\)$/ {\"lib\1\", (void *) \&\1},/p'" + +# Handle CRLF in mingw tool chain +opt_cr= +case $build_os in +mingw*) + opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp + ;; +esac + +# Try without a prefix underscore, then with it. +for ac_symprfx in "" "_"; do + + # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol. + symxfrm="\\1 $ac_symprfx\\2 \\2" + + # Write the raw and C identifiers. + if test "$lt_cv_nm_interface" = "MS dumpbin"; then + # Fake it for dumpbin and say T for any non-static function, + # D for any global variable and I for any imported variable. + # Also find C++ and __fastcall symbols from MSVC++, + # which start with @ or ?. + lt_cv_sys_global_symbol_pipe="$AWK ['"\ +" {last_section=section; section=\$ 3};"\ +" /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\ +" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\ +" /^ *Symbol name *: /{split(\$ 0,sn,\":\"); si=substr(sn[2],2)};"\ +" /^ *Type *: code/{print \"T\",si,substr(si,length(prfx))};"\ +" /^ *Type *: data/{print \"I\",si,substr(si,length(prfx))};"\ +" \$ 0!~/External *\|/{next};"\ +" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\ +" {if(hide[section]) next};"\ +" {f=\"D\"}; \$ 0~/\(\).*\|/{f=\"T\"};"\ +" {split(\$ 0,a,/\||\r/); split(a[2],s)};"\ +" s[1]~/^[@?]/{print f,s[1],s[1]; next};"\ +" s[1]~prfx {split(s[1],t,\"@\"); print f,t[1],substr(t[1],length(prfx))}"\ +" ' prfx=^$ac_symprfx]" + else + lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[ ]]\($symcode$symcode*\)[[ ]][[ ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'" + fi + lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'" + + # Check to see that the pipe works correctly. + pipe_works=no + + rm -f conftest* + cat > conftest.$ac_ext <<_LT_EOF +#ifdef __cplusplus +extern "C" { +#endif +char nm_test_var; +void nm_test_func(void); +void nm_test_func(void){} +#ifdef __cplusplus +} +#endif +int main(){nm_test_var='a';nm_test_func();return(0);} +_LT_EOF + + if AC_TRY_EVAL(ac_compile); then + # Now try to grab the symbols. + nlist=conftest.nm + if AC_TRY_EVAL(NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) && test -s "$nlist"; then + # Try sorting and uniquifying the output. + if sort "$nlist" | uniq > "$nlist"T; then + mv -f "$nlist"T "$nlist" + else + rm -f "$nlist"T + fi + + # Make sure that we snagged all the symbols we need. + if $GREP ' nm_test_var$' "$nlist" >/dev/null; then + if $GREP ' nm_test_func$' "$nlist" >/dev/null; then + cat <<_LT_EOF > conftest.$ac_ext +/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */ +#if defined _WIN32 || defined __CYGWIN__ || defined _WIN32_WCE +/* DATA imports from DLLs on WIN32 can't be const, because runtime + relocations are performed -- see ld's documentation on pseudo-relocs. */ +# define LT@&t@_DLSYM_CONST +#elif defined __osf__ +/* This system does not cope well with relocations in const data. */ +# define LT@&t@_DLSYM_CONST +#else +# define LT@&t@_DLSYM_CONST const +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +_LT_EOF + # Now generate the symbol file. + eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext' + + cat <<_LT_EOF >> conftest.$ac_ext + +/* The mapping between symbol names and symbols. */ +LT@&t@_DLSYM_CONST struct { + const char *name; + void *address; +} +lt__PROGRAM__LTX_preloaded_symbols[[]] = +{ + { "@PROGRAM@", (void *) 0 }, +_LT_EOF + $SED "s/^$symcode$symcode* .* \(.*\)$/ {\"\1\", (void *) \&\1},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext + cat <<\_LT_EOF >> conftest.$ac_ext + {0, (void *) 0} +}; + +/* This works around a problem in FreeBSD linker */ +#ifdef FREEBSD_WORKAROUND +static const void *lt_preloaded_setup() { + return lt__PROGRAM__LTX_preloaded_symbols; +} +#endif + +#ifdef __cplusplus +} +#endif +_LT_EOF + # Now try linking the two files. + mv conftest.$ac_objext conftstm.$ac_objext + lt_globsym_save_LIBS=$LIBS + lt_globsym_save_CFLAGS=$CFLAGS + LIBS=conftstm.$ac_objext + CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)" + if AC_TRY_EVAL(ac_link) && test -s conftest$ac_exeext; then + pipe_works=yes + fi + LIBS=$lt_globsym_save_LIBS + CFLAGS=$lt_globsym_save_CFLAGS + else + echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD + fi + else + echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD + fi + else + echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD + fi + else + echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD + cat conftest.$ac_ext >&5 + fi + rm -rf conftest* conftst* + + # Do not use the global_symbol_pipe unless it works. + if test yes = "$pipe_works"; then + break + else + lt_cv_sys_global_symbol_pipe= + fi +done +]) +if test -z "$lt_cv_sys_global_symbol_pipe"; then + lt_cv_sys_global_symbol_to_cdecl= +fi +if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then + AC_MSG_RESULT(failed) +else + AC_MSG_RESULT(ok) +fi + +# Response file support. +if test "$lt_cv_nm_interface" = "MS dumpbin"; then + nm_file_list_spec='@' +elif $NM --help 2>/dev/null | grep '[[@]]FILE' >/dev/null; then + nm_file_list_spec='@' +fi + +_LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1], + [Take the output of nm and produce a listing of raw symbols and C names]) +_LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1], + [Transform the output of nm in a proper C declaration]) +_LT_DECL([global_symbol_to_import], [lt_cv_sys_global_symbol_to_import], [1], + [Transform the output of nm into a list of symbols to manually relocate]) +_LT_DECL([global_symbol_to_c_name_address], + [lt_cv_sys_global_symbol_to_c_name_address], [1], + [Transform the output of nm in a C name address pair]) +_LT_DECL([global_symbol_to_c_name_address_lib_prefix], + [lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1], + [Transform the output of nm in a C name address pair when lib prefix is needed]) +_LT_DECL([nm_interface], [lt_cv_nm_interface], [1], + [The name lister interface]) +_LT_DECL([], [nm_file_list_spec], [1], + [Specify filename containing input files for $NM]) +]) # _LT_CMD_GLOBAL_SYMBOLS + + +# _LT_COMPILER_PIC([TAGNAME]) +# --------------------------- +m4_defun([_LT_COMPILER_PIC], +[m4_require([_LT_TAG_COMPILER])dnl +_LT_TAGVAR(lt_prog_compiler_wl, $1)= +_LT_TAGVAR(lt_prog_compiler_pic, $1)= +_LT_TAGVAR(lt_prog_compiler_static, $1)= + +m4_if([$1], [CXX], [ + # C++ specific cases for pic, static, wl, etc. + if test yes = "$GXX"; then + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' + + case $host_os in + aix*) + # All AIX code is PIC. + if test ia64 = "$host_cpu"; then + # AIX 5 now supports IA64 processor + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + fi + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + ;; + + amigaos*) + case $host_cpu in + powerpc) + # see comment about AmigaOS4 .so support + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + ;; + m68k) + # FIXME: we need at least 68020 code to build shared libraries, but + # adding the '-m68020' flag to GCC prevents building anything better, + # like '-m68040'. + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4' + ;; + esac + ;; + + beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*) + # PIC is the default for these OSes. + ;; + mingw* | cygwin* | os2* | pw32* | cegcc*) + # This hack is so that the source file can tell whether it is being + # built for inclusion in a dll (and should export symbols for example). + # Although the cygwin gcc ignores -fPIC, still need this for old-style + # (--disable-auto-import) libraries + m4_if([$1], [GCJ], [], + [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) + case $host_os in + os2*) + _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-static' + ;; + esac + ;; + darwin* | rhapsody*) + # PIC is the default on this platform + # Common symbols not allowed in MH_DYLIB files + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common' + ;; + *djgpp*) + # DJGPP does not support shared libraries at all + _LT_TAGVAR(lt_prog_compiler_pic, $1)= + ;; + haiku*) + # PIC is the default for Haiku. + # The "-static" flag exists, but is broken. + _LT_TAGVAR(lt_prog_compiler_static, $1)= + ;; + interix[[3-9]]*) + # Interix 3.x gcc -fpic/-fPIC options generate broken code. + # Instead, we relocate shared libraries at runtime. + ;; + sysv4*MP*) + if test -d /usr/nec; then + _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic + fi + ;; + hpux*) + # PIC is the default for 64-bit PA HP-UX, but not for 32-bit + # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag + # sets the default TLS model and affects inlining. + case $host_cpu in + hppa*64*) + ;; + *) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + ;; + esac + ;; + *qnx* | *nto*) + # QNX uses GNU C++, but need to define -shared option too, otherwise + # it will coredump. + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared' + ;; + *) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + ;; + esac + else + case $host_os in + aix[[4-9]]*) + # All AIX code is PIC. + if test ia64 = "$host_cpu"; then + # AIX 5 now supports IA64 processor + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + else + _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp' + fi + ;; + chorus*) + case $cc_basename in + cxch68*) + # Green Hills C++ Compiler + # _LT_TAGVAR(lt_prog_compiler_static, $1)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a" + ;; + esac + ;; + mingw* | cygwin* | os2* | pw32* | cegcc*) + # This hack is so that the source file can tell whether it is being + # built for inclusion in a dll (and should export symbols for example). + m4_if([$1], [GCJ], [], + [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) + ;; + dgux*) + case $cc_basename in + ec++*) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + ;; + ghcx*) + # Green Hills C++ Compiler + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' + ;; + *) + ;; + esac + ;; + freebsd* | dragonfly*) + # FreeBSD uses GNU C++ + ;; + hpux9* | hpux10* | hpux11*) + case $cc_basename in + CC*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-a ${wl}archive' + if test ia64 != "$host_cpu"; then + _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z' + fi + ;; + aCC*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-a ${wl}archive' + case $host_cpu in + hppa*64*|ia64*) + # +Z the default + ;; + *) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z' + ;; + esac + ;; + *) + ;; + esac + ;; + interix*) + # This is c89, which is MS Visual C++ (no shared libs) + # Anyone wants to do a port? + ;; + irix5* | irix6* | nonstopux*) + case $cc_basename in + CC*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' + # CC pic flag -KPIC is the default. + ;; + *) + ;; + esac + ;; + linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) + case $cc_basename in + KCC*) + # KAI C++ Compiler + _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + ;; + ecpc* ) + # old Intel C++ for x86_64, which still supported -KPIC. + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' + ;; + icpc* ) + # Intel C++, used to be incompatible with GCC. + # ICC 10 doesn't accept -KPIC any more. + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' + ;; + pgCC* | pgcpp*) + # Portland Group C++ compiler + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + cxx*) + # Compaq C++ + # Make sure the PIC flag is empty. It appears that all Alpha + # Linux and Compaq Tru64 Unix objects are PIC. + _LT_TAGVAR(lt_prog_compiler_pic, $1)= + _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' + ;; + xlc* | xlC* | bgxl[[cC]]* | mpixl[[cC]]*) + # IBM XL 8.0, 9.0 on PPC and BlueGene + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink' + ;; + *) + case `$CC -V 2>&1 | sed 5q` in + *Sun\ C*) + # Sun C++ 5.9 + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ' + ;; + esac + ;; + esac + ;; + lynxos*) + ;; + m88k*) + ;; + mvs*) + case $cc_basename in + cxx*) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-W c,exportall' + ;; + *) + ;; + esac + ;; + netbsd*) + ;; + *qnx* | *nto*) + # QNX uses GNU C++, but need to define -shared option too, otherwise + # it will coredump. + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared' + ;; + osf3* | osf4* | osf5*) + case $cc_basename in + KCC*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,' + ;; + RCC*) + # Rational C++ 2.4.1 + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' + ;; + cxx*) + # Digital/Compaq C++ + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + # Make sure the PIC flag is empty. It appears that all Alpha + # Linux and Compaq Tru64 Unix objects are PIC. + _LT_TAGVAR(lt_prog_compiler_pic, $1)= + _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' + ;; + *) + ;; + esac + ;; + psos*) + ;; + solaris*) + case $cc_basename in + CC* | sunCC*) + # Sun C++ 4.2, 5.x and Centerline C++ + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ' + ;; + gcx*) + # Green Hills C++ Compiler + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC' + ;; + *) + ;; + esac + ;; + sunos4*) + case $cc_basename in + CC*) + # Sun C++ 4.x + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + lcc*) + # Lucid + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' + ;; + *) + ;; + esac + ;; + sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*) + case $cc_basename in + CC*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + esac + ;; + tandem*) + case $cc_basename in + NCC*) + # NonStop-UX NCC 3.20 + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + ;; + *) + ;; + esac + ;; + vxworks*) + ;; + *) + _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no + ;; + esac + fi +], +[ + if test yes = "$GCC"; then + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' + + case $host_os in + aix*) + # All AIX code is PIC. + if test ia64 = "$host_cpu"; then + # AIX 5 now supports IA64 processor + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + fi + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + ;; + + amigaos*) + case $host_cpu in + powerpc) + # see comment about AmigaOS4 .so support + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + ;; + m68k) + # FIXME: we need at least 68020 code to build shared libraries, but + # adding the '-m68020' flag to GCC prevents building anything better, + # like '-m68040'. + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4' + ;; + esac + ;; + + beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*) + # PIC is the default for these OSes. + ;; + + mingw* | cygwin* | pw32* | os2* | cegcc*) + # This hack is so that the source file can tell whether it is being + # built for inclusion in a dll (and should export symbols for example). + # Although the cygwin gcc ignores -fPIC, still need this for old-style + # (--disable-auto-import) libraries + m4_if([$1], [GCJ], [], + [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) + case $host_os in + os2*) + _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-static' + ;; + esac + ;; + + darwin* | rhapsody*) + # PIC is the default on this platform + # Common symbols not allowed in MH_DYLIB files + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common' + ;; + + haiku*) + # PIC is the default for Haiku. + # The "-static" flag exists, but is broken. + _LT_TAGVAR(lt_prog_compiler_static, $1)= + ;; + + hpux*) + # PIC is the default for 64-bit PA HP-UX, but not for 32-bit + # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag + # sets the default TLS model and affects inlining. + case $host_cpu in + hppa*64*) + # +Z the default + ;; + *) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + ;; + esac + ;; + + interix[[3-9]]*) + # Interix 3.x gcc -fpic/-fPIC options generate broken code. + # Instead, we relocate shared libraries at runtime. + ;; + + msdosdjgpp*) + # Just because we use GCC doesn't mean we suddenly get shared libraries + # on systems that don't support them. + _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no + enable_shared=no + ;; + + *nto* | *qnx*) + # QNX uses GNU C++, but need to define -shared option too, otherwise + # it will coredump. + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared' + ;; + + sysv4*MP*) + if test -d /usr/nec; then + _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic + fi + ;; + + *) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + ;; + esac + + case $cc_basename in + nvcc*) # Cuda Compiler Driver 2.2 + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Xlinker ' + if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then + _LT_TAGVAR(lt_prog_compiler_pic, $1)="-Xcompiler $_LT_TAGVAR(lt_prog_compiler_pic, $1)" + fi + ;; + esac + else + # PORTME Check for flag to pass linker flags through the system compiler. + case $host_os in + aix*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + if test ia64 = "$host_cpu"; then + # AIX 5 now supports IA64 processor + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + else + _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp' + fi + ;; + + darwin* | rhapsody*) + # PIC is the default on this platform + # Common symbols not allowed in MH_DYLIB files + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common' + case $cc_basename in + nagfor*) + # NAG Fortran compiler + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,-Wl,,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + esac + ;; + + mingw* | cygwin* | pw32* | os2* | cegcc*) + # This hack is so that the source file can tell whether it is being + # built for inclusion in a dll (and should export symbols for example). + m4_if([$1], [GCJ], [], + [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT']) + case $host_os in + os2*) + _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-static' + ;; + esac + ;; + + hpux9* | hpux10* | hpux11*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but + # not for PA HP-UX. + case $host_cpu in + hppa*64*|ia64*) + # +Z the default + ;; + *) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z' + ;; + esac + # Is there a better lt_prog_compiler_static that works with the bundled CC? + _LT_TAGVAR(lt_prog_compiler_static, $1)='$wl-a ${wl}archive' + ;; + + irix5* | irix6* | nonstopux*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + # PIC (with -KPIC) is the default. + _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' + ;; + + linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) + case $cc_basename in + # old Intel for x86_64, which still supported -KPIC. + ecc*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' + ;; + # icc used to be incompatible with GCC. + # ICC 10 doesn't accept -KPIC any more. + icc* | ifort*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' + ;; + # Lahey Fortran 8.1. + lf95*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='--shared' + _LT_TAGVAR(lt_prog_compiler_static, $1)='--static' + ;; + nagfor*) + # NAG Fortran compiler + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,-Wl,,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + tcc*) + # Fabrice Bellard et al's Tiny C Compiler + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' + ;; + pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*) + # Portland Group compilers (*not* the Pentium gcc compiler, + # which looks to be a dead project) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + ccc*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + # All Alpha code is PIC. + _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' + ;; + xl* | bgxl* | bgf* | mpixl*) + # IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink' + ;; + *) + case `$CC -V 2>&1 | sed 5q` in + *Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [[1-7]].* | *Sun*Fortran*\ 8.[[0-3]]*) + # Sun Fortran 8.3 passes all unrecognized flags to the linker + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + _LT_TAGVAR(lt_prog_compiler_wl, $1)='' + ;; + *Sun\ F* | *Sun*Fortran*) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ' + ;; + *Sun\ C*) + # Sun C 5.9 + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + ;; + *Intel*\ [[CF]]*Compiler*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-static' + ;; + *Portland\ Group*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + esac + ;; + esac + ;; + + newsos6) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + + *nto* | *qnx*) + # QNX uses GNU C++, but need to define -shared option too, otherwise + # it will coredump. + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared' + ;; + + osf3* | osf4* | osf5*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + # All OSF/1 code is PIC. + _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' + ;; + + rdos*) + _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared' + ;; + + solaris*) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + case $cc_basename in + f77* | f90* | f95* | sunf77* | sunf90* | sunf95*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ';; + *) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,';; + esac + ;; + + sunos4*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + + sysv4 | sysv4.2uw2* | sysv4.3*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + + sysv4*MP*) + if test -d /usr/nec; then + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-Kconform_pic' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + fi + ;; + + sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + + unicos*) + _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,' + _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no + ;; + + uts4*) + _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic' + _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic' + ;; + + *) + _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no + ;; + esac + fi +]) +case $host_os in + # For platforms that do not support PIC, -DPIC is meaningless: + *djgpp*) + _LT_TAGVAR(lt_prog_compiler_pic, $1)= + ;; + *) + _LT_TAGVAR(lt_prog_compiler_pic, $1)="$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])" + ;; +esac + +AC_CACHE_CHECK([for $compiler option to produce PIC], + [_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)], + [_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)=$_LT_TAGVAR(lt_prog_compiler_pic, $1)]) +_LT_TAGVAR(lt_prog_compiler_pic, $1)=$_LT_TAGVAR(lt_cv_prog_compiler_pic, $1) + +# +# Check to make sure the PIC flag actually works. +# +if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then + _LT_COMPILER_OPTION([if $compiler PIC flag $_LT_TAGVAR(lt_prog_compiler_pic, $1) works], + [_LT_TAGVAR(lt_cv_prog_compiler_pic_works, $1)], + [$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])], [], + [case $_LT_TAGVAR(lt_prog_compiler_pic, $1) in + "" | " "*) ;; + *) _LT_TAGVAR(lt_prog_compiler_pic, $1)=" $_LT_TAGVAR(lt_prog_compiler_pic, $1)" ;; + esac], + [_LT_TAGVAR(lt_prog_compiler_pic, $1)= + _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no]) +fi +_LT_TAGDECL([pic_flag], [lt_prog_compiler_pic], [1], + [Additional compiler flags for building library objects]) + +_LT_TAGDECL([wl], [lt_prog_compiler_wl], [1], + [How to pass a linker flag through the compiler]) +# +# Check to make sure the static flag actually works. +# +wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1) eval lt_tmp_static_flag=\"$_LT_TAGVAR(lt_prog_compiler_static, $1)\" +_LT_LINKER_OPTION([if $compiler static flag $lt_tmp_static_flag works], + _LT_TAGVAR(lt_cv_prog_compiler_static_works, $1), + $lt_tmp_static_flag, + [], + [_LT_TAGVAR(lt_prog_compiler_static, $1)=]) +_LT_TAGDECL([link_static_flag], [lt_prog_compiler_static], [1], + [Compiler flag to prevent dynamic linking]) +])# _LT_COMPILER_PIC + + +# _LT_LINKER_SHLIBS([TAGNAME]) +# ---------------------------- +# See if the linker supports building shared libraries. +m4_defun([_LT_LINKER_SHLIBS], +[AC_REQUIRE([LT_PATH_LD])dnl +AC_REQUIRE([LT_PATH_NM])dnl +m4_require([_LT_PATH_MANIFEST_TOOL])dnl +m4_require([_LT_FILEUTILS_DEFAULTS])dnl +m4_require([_LT_DECL_EGREP])dnl +m4_require([_LT_DECL_SED])dnl +m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl +m4_require([_LT_TAG_COMPILER])dnl +AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries]) +m4_if([$1], [CXX], [ + _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols' + _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*'] + case $host_os in + aix[[4-9]]*) + # If we're using GNU nm, then we don't want the "-C" option. + # -C means demangle to GNU nm, but means don't demangle to AIX nm. + # Without the "-l" option, or with the "-B" option, AIX nm treats + # weak defined symbols like other global defined symbols, whereas + # GNU nm marks them as "W". + # While the 'weak' keyword is ignored in the Export File, we need + # it in the Import File for the 'aix-soname' feature, so we have + # to replace the "-B" option with "-P" for AIX nm. + if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then + _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { if (\$ 2 == "W") { print \$ 3 " weak" } else { print \$ 3 } } }'\'' | sort -u > $export_symbols' + else + _LT_TAGVAR(export_symbols_cmds, $1)='`func_echo_all $NM | $SED -e '\''s/B\([[^B]]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && ([substr](\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols' + fi + ;; + pw32*) + _LT_TAGVAR(export_symbols_cmds, $1)=$ltdll_cmds + ;; + cygwin* | mingw* | cegcc*) + case $cc_basename in + cl*) + _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*' + ;; + *) + _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols' + _LT_TAGVAR(exclude_expsyms, $1)=['[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname'] + ;; + esac + ;; + *) + _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols' + ;; + esac +], [ + runpath_var= + _LT_TAGVAR(allow_undefined_flag, $1)= + _LT_TAGVAR(always_export_symbols, $1)=no + _LT_TAGVAR(archive_cmds, $1)= + _LT_TAGVAR(archive_expsym_cmds, $1)= + _LT_TAGVAR(compiler_needs_object, $1)=no + _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no + _LT_TAGVAR(export_dynamic_flag_spec, $1)= + _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols' + _LT_TAGVAR(hardcode_automatic, $1)=no + _LT_TAGVAR(hardcode_direct, $1)=no + _LT_TAGVAR(hardcode_direct_absolute, $1)=no + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)= + _LT_TAGVAR(hardcode_libdir_separator, $1)= + _LT_TAGVAR(hardcode_minus_L, $1)=no + _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported + _LT_TAGVAR(inherit_rpath, $1)=no + _LT_TAGVAR(link_all_deplibs, $1)=unknown + _LT_TAGVAR(module_cmds, $1)= + _LT_TAGVAR(module_expsym_cmds, $1)= + _LT_TAGVAR(old_archive_from_new_cmds, $1)= + _LT_TAGVAR(old_archive_from_expsyms_cmds, $1)= + _LT_TAGVAR(thread_safe_flag_spec, $1)= + _LT_TAGVAR(whole_archive_flag_spec, $1)= + # include_expsyms should be a list of space-separated symbols to be *always* + # included in the symbol list + _LT_TAGVAR(include_expsyms, $1)= + # exclude_expsyms can be an extended regexp of symbols to exclude + # it will be wrapped by ' (' and ')$', so one must not match beginning or + # end of line. Example: 'a|bc|.*d.*' will exclude the symbols 'a' and 'bc', + # as well as any symbol that contains 'd'. + _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*'] + # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out + # platforms (ab)use it in PIC code, but their linkers get confused if + # the symbol is explicitly referenced. Since portable code cannot + # rely on this symbol name, it's probably fine to never include it in + # preloaded symbol tables. + # Exclude shared library initialization/finalization symbols. +dnl Note also adjust exclude_expsyms for C++ above. + extract_expsyms_cmds= + + case $host_os in + cygwin* | mingw* | pw32* | cegcc*) + # FIXME: the MSVC++ port hasn't been tested in a loooong time + # When not using gcc, we currently assume that we are using + # Microsoft Visual C++. + if test yes != "$GCC"; then + with_gnu_ld=no + fi + ;; + interix*) + # we just hope/assume this is gcc and not c89 (= MSVC++) + with_gnu_ld=yes + ;; + openbsd* | bitrig*) + with_gnu_ld=no + ;; + esac + + _LT_TAGVAR(ld_shlibs, $1)=yes + + # On some targets, GNU ld is compatible enough with the native linker + # that we're better off using the native interface for both. + lt_use_gnu_ld_interface=no + if test yes = "$with_gnu_ld"; then + case $host_os in + aix*) + # The AIX port of GNU ld has always aspired to compatibility + # with the native linker. However, as the warning in the GNU ld + # block says, versions before 2.19.5* couldn't really create working + # shared libraries, regardless of the interface used. + case `$LD -v 2>&1` in + *\ \(GNU\ Binutils\)\ 2.19.5*) ;; + *\ \(GNU\ Binutils\)\ 2.[[2-9]]*) ;; + *\ \(GNU\ Binutils\)\ [[3-9]]*) ;; + *) + lt_use_gnu_ld_interface=yes + ;; + esac + ;; + *) + lt_use_gnu_ld_interface=yes + ;; + esac + fi + + if test yes = "$lt_use_gnu_ld_interface"; then + # If archive_cmds runs LD, not CC, wlarc should be empty + wlarc='$wl' + + # Set some defaults for GNU ld with shared library support. These + # are reset later if shared libraries are not supported. Putting them + # here allows them to be overridden if necessary. + runpath_var=LD_RUN_PATH + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-dynamic' + # ancient GNU ld didn't support --whole-archive et. al. + if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then + _LT_TAGVAR(whole_archive_flag_spec, $1)=$wlarc'--whole-archive$convenience '$wlarc'--no-whole-archive' + else + _LT_TAGVAR(whole_archive_flag_spec, $1)= + fi + supports_anon_versioning=no + case `$LD -v | $SED -e 's/([^)]\+)\s\+//' 2>&1` in + *GNU\ gold*) supports_anon_versioning=yes ;; + *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.10.*) ;; # catch versions < 2.11 + *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ... + *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ... + *\ 2.11.*) ;; # other 2.11 versions + *) supports_anon_versioning=yes ;; + esac + + # See if GNU ld supports shared libraries. + case $host_os in + aix[[3-9]]*) + # On AIX/PPC, the GNU linker is very broken + if test ia64 != "$host_cpu"; then + _LT_TAGVAR(ld_shlibs, $1)=no + cat <<_LT_EOF 1>&2 + +*** Warning: the GNU linker, at least up to release 2.19, is reported +*** to be unable to reliably create shared libraries on AIX. +*** Therefore, libtool is disabling shared libraries support. If you +*** really care for shared libraries, you may want to install binutils +*** 2.20 or above, or modify your PATH so that a non-GNU linker is found. +*** You will then need to restart the configuration process. + +_LT_EOF + fi + ;; + + amigaos*) + case $host_cpu in + powerpc) + # see comment about AmigaOS4 .so support + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='' + ;; + m68k) + _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(hardcode_minus_L, $1)=yes + ;; + esac + ;; + + beos*) + if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + # Joseph Beckenbach says some releases of gcc + # support --undefined. This deserves some investigation. FIXME + _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + + cygwin* | mingw* | pw32* | cegcc*) + # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless, + # as there is no search path for DLLs. + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-all-symbols' + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + _LT_TAGVAR(always_export_symbols, $1)=no + _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes + _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols' + _LT_TAGVAR(exclude_expsyms, $1)=['[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname'] + + if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib' + # If the export-symbols file already is a .def file, use it as + # is; otherwise, prepend EXPORTS... + _LT_TAGVAR(archive_expsym_cmds, $1)='if _LT_DLL_DEF_P([$export_symbols]); then + cp $export_symbols $output_objdir/$soname.def; + else + echo EXPORTS > $output_objdir/$soname.def; + cat $export_symbols >> $output_objdir/$soname.def; + fi~ + $CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib' + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + + haiku*) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(link_all_deplibs, $1)=yes + ;; + + os2*) + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(hardcode_minus_L, $1)=yes + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + shrext_cmds=.dll + _LT_TAGVAR(archive_cmds, $1)='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ + $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ + $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ + $ECHO EXPORTS >> $output_objdir/$libname.def~ + emxexp $libobjs | $SED /"_DLL_InitTerm"/d >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + _LT_TAGVAR(archive_expsym_cmds, $1)='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ + $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ + $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ + $ECHO EXPORTS >> $output_objdir/$libname.def~ + prefix_cmds="$SED"~ + if test EXPORTS = "`$SED 1q $export_symbols`"; then + prefix_cmds="$prefix_cmds -e 1d"; + fi~ + prefix_cmds="$prefix_cmds -e \"s/^\(.*\)$/_\1/g\""~ + cat $export_symbols | $prefix_cmds >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + _LT_TAGVAR(old_archive_From_new_cmds, $1)='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def' + _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes + ;; + + interix[[3-9]]*) + _LT_TAGVAR(hardcode_direct, $1)=no + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath,$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-E' + # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc. + # Instead, shared libraries are loaded at an image base (0x10000000 by + # default) and relocated if they conflict, which is a slow very memory + # consuming and fragmenting process. To avoid this, we pick a random, + # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link + # time. Moving up from 0x10000000 also allows more sbrk(2) space. + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib' + ;; + + gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu) + tmp_diet=no + if test linux-dietlibc = "$host_os"; then + case $cc_basename in + diet\ *) tmp_diet=yes;; # linux-dietlibc with static linking (!diet-dyn) + esac + fi + if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \ + && test no = "$tmp_diet" + then + tmp_addflag=' $pic_flag' + tmp_sharedflag='-shared' + case $cc_basename,$host_cpu in + pgcc*) # Portland Group C compiler + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + tmp_addflag=' $pic_flag' + ;; + pgf77* | pgf90* | pgf95* | pgfortran*) + # Portland Group f77 and f90 compilers + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + tmp_addflag=' $pic_flag -Mnomain' ;; + ecc*,ia64* | icc*,ia64*) # Intel C compiler on ia64 + tmp_addflag=' -i_dynamic' ;; + efc*,ia64* | ifort*,ia64*) # Intel Fortran compiler on ia64 + tmp_addflag=' -i_dynamic -nofor_main' ;; + ifc* | ifort*) # Intel Fortran compiler + tmp_addflag=' -nofor_main' ;; + lf95*) # Lahey Fortran 8.1 + _LT_TAGVAR(whole_archive_flag_spec, $1)= + tmp_sharedflag='--shared' ;; + nagfor*) # NAGFOR 5.3 + tmp_sharedflag='-Wl,-shared' ;; + xl[[cC]]* | bgxl[[cC]]* | mpixl[[cC]]*) # IBM XL C 8.0 on PPC (deal with xlf below) + tmp_sharedflag='-qmkshrobj' + tmp_addflag= ;; + nvcc*) # Cuda Compiler Driver 2.2 + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + _LT_TAGVAR(compiler_needs_object, $1)=yes + ;; + esac + case `$CC -V 2>&1 | sed 5q` in + *Sun\ C*) # Sun C 5.9 + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + _LT_TAGVAR(compiler_needs_object, $1)=yes + tmp_sharedflag='-G' ;; + *Sun\ F*) # Sun Fortran 8.3 + tmp_sharedflag='-G' ;; + esac + _LT_TAGVAR(archive_cmds, $1)='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + + if test yes = "$supports_anon_versioning"; then + _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~ + cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~ + echo "local: *; };" >> $output_objdir/$libname.ver~ + $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-version-script $wl$output_objdir/$libname.ver -o $lib' + fi + + case $cc_basename in + tcc*) + _LT_TAGVAR(export_dynamic_flag_spec, $1)='-rdynamic' + ;; + xlf* | bgf* | bgxlf* | mpixlf*) + # IBM XL Fortran 10.1 on PPC cannot create shared libs itself + _LT_TAGVAR(whole_archive_flag_spec, $1)='--whole-archive$convenience --no-whole-archive' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + _LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib' + if test yes = "$supports_anon_versioning"; then + _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~ + cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~ + echo "local: *; };" >> $output_objdir/$libname.ver~ + $LD -shared $libobjs $deplibs $linker_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib' + fi + ;; + esac + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + + netbsd*) + if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then + _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib' + wlarc= + else + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + fi + ;; + + solaris*) + if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then + _LT_TAGVAR(ld_shlibs, $1)=no + cat <<_LT_EOF 1>&2 + +*** Warning: The releases 2.8.* of the GNU linker cannot reliably +*** create shared libraries on Solaris systems. Therefore, libtool +*** is disabling shared libraries support. We urge you to upgrade GNU +*** binutils to release 2.9.1 or newer. Another option is to modify +*** your PATH or compiler configuration so that the native linker is +*** used, and then restart. + +_LT_EOF + elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + + sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*) + case `$LD -v 2>&1` in + *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.1[[0-5]].*) + _LT_TAGVAR(ld_shlibs, $1)=no + cat <<_LT_EOF 1>&2 + +*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 cannot +*** reliably create shared libraries on SCO systems. Therefore, libtool +*** is disabling shared libraries support. We urge you to upgrade GNU +*** binutils to release 2.16.91.0.3 or newer. Another option is to modify +*** your PATH or compiler configuration so that the native linker is +*** used, and then restart. + +_LT_EOF + ;; + *) + # For security reasons, it is highly recommended that you always + # use absolute paths for naming shared libraries, and exclude the + # DT_RUNPATH tag from executables and libraries. But doing so + # requires that you compile everything twice, which is a pain. + if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + esac + ;; + + sunos4*) + _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags' + wlarc= + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + + *) + if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + esac + + if test no = "$_LT_TAGVAR(ld_shlibs, $1)"; then + runpath_var= + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)= + _LT_TAGVAR(export_dynamic_flag_spec, $1)= + _LT_TAGVAR(whole_archive_flag_spec, $1)= + fi + else + # PORTME fill in a description of your system's linker (not GNU ld) + case $host_os in + aix3*) + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + _LT_TAGVAR(always_export_symbols, $1)=yes + _LT_TAGVAR(archive_expsym_cmds, $1)='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname' + # Note: this linker hardcodes the directories in LIBPATH if there + # are no directories specified by -L. + _LT_TAGVAR(hardcode_minus_L, $1)=yes + if test yes = "$GCC" && test -z "$lt_prog_compiler_static"; then + # Neither direct hardcoding nor static linking is supported with a + # broken collect2. + _LT_TAGVAR(hardcode_direct, $1)=unsupported + fi + ;; + + aix[[4-9]]*) + if test ia64 = "$host_cpu"; then + # On IA64, the linker does run time linking by default, so we don't + # have to do anything special. + aix_use_runtimelinking=no + exp_sym_flag='-Bexport' + no_entry_flag= + else + # If we're using GNU nm, then we don't want the "-C" option. + # -C means demangle to GNU nm, but means don't demangle to AIX nm. + # Without the "-l" option, or with the "-B" option, AIX nm treats + # weak defined symbols like other global defined symbols, whereas + # GNU nm marks them as "W". + # While the 'weak' keyword is ignored in the Export File, we need + # it in the Import File for the 'aix-soname' feature, so we have + # to replace the "-B" option with "-P" for AIX nm. + if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then + _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { if (\$ 2 == "W") { print \$ 3 " weak" } else { print \$ 3 } } }'\'' | sort -u > $export_symbols' + else + _LT_TAGVAR(export_symbols_cmds, $1)='`func_echo_all $NM | $SED -e '\''s/B\([[^B]]*\)$/P\1/'\''` -PCpgl $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) && ([substr](\$ 1,1,1) != ".")) { if ((\$ 2 == "W") || (\$ 2 == "V") || (\$ 2 == "Z")) { print \$ 1 " weak" } else { print \$ 1 } } }'\'' | sort -u > $export_symbols' + fi + aix_use_runtimelinking=no + + # Test if we are trying to use run time linking or normal + # AIX style linking. If -brtl is somewhere in LDFLAGS, we + # have runtime linking enabled, and use it for executables. + # For shared libraries, we enable/disable runtime linking + # depending on the kind of the shared library created - + # when "with_aix_soname,aix_use_runtimelinking" is: + # "aix,no" lib.a(lib.so.V) shared, rtl:no, for executables + # "aix,yes" lib.so shared, rtl:yes, for executables + # lib.a static archive + # "both,no" lib.so.V(shr.o) shared, rtl:yes + # lib.a(lib.so.V) shared, rtl:no, for executables + # "both,yes" lib.so.V(shr.o) shared, rtl:yes, for executables + # lib.a(lib.so.V) shared, rtl:no + # "svr4,*" lib.so.V(shr.o) shared, rtl:yes, for executables + # lib.a static archive + case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*) + for ld_flag in $LDFLAGS; do + if (test x-brtl = "x$ld_flag" || test x-Wl,-brtl = "x$ld_flag"); then + aix_use_runtimelinking=yes + break + fi + done + if test svr4,no = "$with_aix_soname,$aix_use_runtimelinking"; then + # With aix-soname=svr4, we create the lib.so.V shared archives only, + # so we don't have lib.a shared libs to link our executables. + # We have to force runtime linking in this case. + aix_use_runtimelinking=yes + LDFLAGS="$LDFLAGS -Wl,-brtl" + fi + ;; + esac + + exp_sym_flag='-bexport' + no_entry_flag='-bnoentry' + fi + + # When large executables or shared objects are built, AIX ld can + # have problems creating the table of contents. If linking a library + # or program results in "error TOC overflow" add -mminimal-toc to + # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not + # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS. + + _LT_TAGVAR(archive_cmds, $1)='' + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_direct_absolute, $1)=yes + _LT_TAGVAR(hardcode_libdir_separator, $1)=':' + _LT_TAGVAR(link_all_deplibs, $1)=yes + _LT_TAGVAR(file_list_spec, $1)='$wl-f,' + case $with_aix_soname,$aix_use_runtimelinking in + aix,*) ;; # traditional, no import file + svr4,* | *,yes) # use import file + # The Import File defines what to hardcode. + _LT_TAGVAR(hardcode_direct, $1)=no + _LT_TAGVAR(hardcode_direct_absolute, $1)=no + ;; + esac + + if test yes = "$GCC"; then + case $host_os in aix4.[[012]]|aix4.[[012]].*) + # We only want to do this on AIX 4.2 and lower, the check + # below for broken collect2 doesn't work under 4.3+ + collect2name=`$CC -print-prog-name=collect2` + if test -f "$collect2name" && + strings "$collect2name" | $GREP resolve_lib_name >/dev/null + then + # We have reworked collect2 + : + else + # We have old collect2 + _LT_TAGVAR(hardcode_direct, $1)=unsupported + # It fails to find uninstalled libraries when the uninstalled + # path is not listed in the libpath. Setting hardcode_minus_L + # to unsupported forces relinking + _LT_TAGVAR(hardcode_minus_L, $1)=yes + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)= + fi + ;; + esac + shared_flag='-shared' + if test yes = "$aix_use_runtimelinking"; then + shared_flag="$shared_flag "'$wl-G' + fi + # Need to ensure runtime linking is disabled for the traditional + # shared library, or the linker may eventually find shared libraries + # /with/ Import File - we do not want to mix them. + shared_flag_aix='-shared' + shared_flag_svr4='-shared $wl-G' + else + # not using gcc + if test ia64 = "$host_cpu"; then + # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release + # chokes on -Wl,-G. The following line is correct: + shared_flag='-G' + else + if test yes = "$aix_use_runtimelinking"; then + shared_flag='$wl-G' + else + shared_flag='$wl-bM:SRE' + fi + shared_flag_aix='$wl-bM:SRE' + shared_flag_svr4='$wl-G' + fi + fi + + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-bexpall' + # It seems that -bexpall does not export symbols beginning with + # underscore (_), so it is better to generate a list of symbols to export. + _LT_TAGVAR(always_export_symbols, $1)=yes + if test aix,yes = "$with_aix_soname,$aix_use_runtimelinking"; then + # Warning - without using the other runtime loading flags (-brtl), + # -berok will link without error, but may produce a broken library. + _LT_TAGVAR(allow_undefined_flag, $1)='-berok' + # Determine the default libpath from the value encoded in an + # empty executable. + _LT_SYS_MODULE_PATH_AIX([$1]) + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-blibpath:$libdir:'"$aix_libpath" + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs $wl'$no_entry_flag' $compiler_flags `if test -n "$allow_undefined_flag"; then func_echo_all "$wl$allow_undefined_flag"; else :; fi` $wl'$exp_sym_flag:\$export_symbols' '$shared_flag + else + if test ia64 = "$host_cpu"; then + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-R $libdir:/usr/lib:/lib' + _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs" + _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\$wl$no_entry_flag"' $compiler_flags $wl$allow_undefined_flag '"\$wl$exp_sym_flag:\$export_symbols" + else + # Determine the default libpath from the value encoded in an + # empty executable. + _LT_SYS_MODULE_PATH_AIX([$1]) + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-blibpath:$libdir:'"$aix_libpath" + # Warning - without using the other run time loading flags, + # -berok will link without error, but may produce a broken library. + _LT_TAGVAR(no_undefined_flag, $1)=' $wl-bernotok' + _LT_TAGVAR(allow_undefined_flag, $1)=' $wl-berok' + if test yes = "$with_gnu_ld"; then + # We only use this code for GNU lds that support --whole-archive. + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive$convenience $wl--no-whole-archive' + else + # Exported symbols can be pulled into shared objects from archives + _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience' + fi + _LT_TAGVAR(archive_cmds_need_lc, $1)=yes + _LT_TAGVAR(archive_expsym_cmds, $1)='$RM -r $output_objdir/$realname.d~$MKDIR $output_objdir/$realname.d' + # -brtl affects multiple linker settings, -berok does not and is overridden later + compiler_flags_filtered='`func_echo_all "$compiler_flags " | $SED -e "s%-brtl\\([[, ]]\\)%-berok\\1%g"`' + if test svr4 != "$with_aix_soname"; then + # This is similar to how AIX traditionally builds its shared libraries. + _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$CC '$shared_flag_aix' -o $output_objdir/$realname.d/$soname $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$realname.d/$soname' + fi + if test aix != "$with_aix_soname"; then + _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$CC '$shared_flag_svr4' -o $output_objdir/$realname.d/$shared_archive_member_spec.o $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$STRIP -e $output_objdir/$realname.d/$shared_archive_member_spec.o~( func_echo_all "#! $soname($shared_archive_member_spec.o)"; if test shr_64 = "$shared_archive_member_spec"; then func_echo_all "# 64"; else func_echo_all "# 32"; fi; cat $export_symbols ) > $output_objdir/$realname.d/$shared_archive_member_spec.imp~$AR $AR_FLAGS $output_objdir/$soname $output_objdir/$realname.d/$shared_archive_member_spec.o $output_objdir/$realname.d/$shared_archive_member_spec.imp' + else + # used by -dlpreopen to get the symbols + _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$MV $output_objdir/$realname.d/$soname $output_objdir' + fi + _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$RM -r $output_objdir/$realname.d' + fi + fi + ;; + + amigaos*) + case $host_cpu in + powerpc) + # see comment about AmigaOS4 .so support + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='' + ;; + m68k) + _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(hardcode_minus_L, $1)=yes + ;; + esac + ;; + + bsdi[[45]]*) + _LT_TAGVAR(export_dynamic_flag_spec, $1)=-rdynamic + ;; + + cygwin* | mingw* | pw32* | cegcc*) + # When not using gcc, we currently assume that we are using + # Microsoft Visual C++. + # hardcode_libdir_flag_spec is actually meaningless, as there is + # no search path for DLLs. + case $cc_basename in + cl*) + # Native MSVC + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' ' + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + _LT_TAGVAR(always_export_symbols, $1)=yes + _LT_TAGVAR(file_list_spec, $1)='@' + # Tell ltmain to make .lib files, not .a files. + libext=lib + # Tell ltmain to make .dll files, not .so files. + shrext_cmds=.dll + # FIXME: Setting linknames here is a bad hack. + _LT_TAGVAR(archive_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~linknames=' + _LT_TAGVAR(archive_expsym_cmds, $1)='if _LT_DLL_DEF_P([$export_symbols]); then + cp "$export_symbols" "$output_objdir/$soname.def"; + echo "$tool_output_objdir$soname.def" > "$output_objdir/$soname.exp"; + else + $SED -e '\''s/^/-link -EXPORT:/'\'' < $export_symbols > $output_objdir/$soname.exp; + fi~ + $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~ + linknames=' + # The linker will not automatically build a static lib if we build a DLL. + # _LT_TAGVAR(old_archive_from_new_cmds, $1)='true' + _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes + _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*' + _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1,DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols' + # Don't use ranlib + _LT_TAGVAR(old_postinstall_cmds, $1)='chmod 644 $oldlib' + _LT_TAGVAR(postlink_cmds, $1)='lt_outputfile="@OUTPUT@"~ + lt_tool_outputfile="@TOOL_OUTPUT@"~ + case $lt_outputfile in + *.exe|*.EXE) ;; + *) + lt_outputfile=$lt_outputfile.exe + lt_tool_outputfile=$lt_tool_outputfile.exe + ;; + esac~ + if test : != "$MANIFEST_TOOL" && test -f "$lt_outputfile.manifest"; then + $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1; + $RM "$lt_outputfile.manifest"; + fi' + ;; + *) + # Assume MSVC wrapper + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' ' + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + # Tell ltmain to make .lib files, not .a files. + libext=lib + # Tell ltmain to make .dll files, not .so files. + shrext_cmds=.dll + # FIXME: Setting linknames here is a bad hack. + _LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames=' + # The linker will automatically build a .lib file if we build a DLL. + _LT_TAGVAR(old_archive_from_new_cmds, $1)='true' + # FIXME: Should let the user specify the lib program. + _LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs' + _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes + ;; + esac + ;; + + darwin* | rhapsody*) + _LT_DARWIN_LINKER_FEATURES($1) + ;; + + dgux*) + _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + + # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor + # support. Future versions do this automatically, but an explicit c++rt0.o + # does not break anything, and helps significantly (at the cost of a little + # extra space). + freebsd2.2*) + _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir' + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + + # Unfortunately, older versions of FreeBSD 2 do not have this feature. + freebsd2.*) + _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_minus_L, $1)=yes + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + + # FreeBSD 3 and greater uses gcc -shared to do shared libraries. + freebsd* | dragonfly*) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir' + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + + hpux9*) + if test yes = "$GCC"; then + _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared $pic_flag $wl+b $wl$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib' + else + _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib' + fi + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl+b $wl$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + _LT_TAGVAR(hardcode_direct, $1)=yes + + # hardcode_minus_L: Not really in the search PATH, + # but as the default location of the library. + _LT_TAGVAR(hardcode_minus_L, $1)=yes + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-E' + ;; + + hpux10*) + if test yes,no = "$GCC,$with_gnu_ld"; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $libobjs $deplibs $compiler_flags' + else + _LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' + fi + if test no = "$with_gnu_ld"; then + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl+b $wl$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_direct_absolute, $1)=yes + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-E' + # hardcode_minus_L: Not really in the search PATH, + # but as the default location of the library. + _LT_TAGVAR(hardcode_minus_L, $1)=yes + fi + ;; + + hpux11*) + if test yes,no = "$GCC,$with_gnu_ld"; then + case $host_cpu in + hppa*64*) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $wl+h $wl$soname -o $lib $libobjs $deplibs $compiler_flags' + ;; + ia64*) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $wl+h $wl$soname $wl+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags' + ;; + *) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $libobjs $deplibs $compiler_flags' + ;; + esac + else + case $host_cpu in + hppa*64*) + _LT_TAGVAR(archive_cmds, $1)='$CC -b $wl+h $wl$soname -o $lib $libobjs $deplibs $compiler_flags' + ;; + ia64*) + _LT_TAGVAR(archive_cmds, $1)='$CC -b $wl+h $wl$soname $wl+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags' + ;; + *) + m4_if($1, [], [ + # Older versions of the 11.00 compiler do not understand -b yet + # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does) + _LT_LINKER_OPTION([if $CC understands -b], + _LT_TAGVAR(lt_cv_prog_compiler__b, $1), [-b], + [_LT_TAGVAR(archive_cmds, $1)='$CC -b $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $libobjs $deplibs $compiler_flags'], + [_LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'])], + [_LT_TAGVAR(archive_cmds, $1)='$CC -b $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $libobjs $deplibs $compiler_flags']) + ;; + esac + fi + if test no = "$with_gnu_ld"; then + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl+b $wl$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + + case $host_cpu in + hppa*64*|ia64*) + _LT_TAGVAR(hardcode_direct, $1)=no + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + *) + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_direct_absolute, $1)=yes + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-E' + + # hardcode_minus_L: Not really in the search PATH, + # but as the default location of the library. + _LT_TAGVAR(hardcode_minus_L, $1)=yes + ;; + esac + fi + ;; + + irix5* | irix6* | nonstopux*) + if test yes = "$GCC"; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' + # Try to use the -exported_symbol ld option, if it does not + # work, assume that -exports_file does not work either and + # implicitly export all symbols. + # This should be the same for all languages, so no per-tag cache variable. + AC_CACHE_CHECK([whether the $host_os linker accepts -exported_symbol], + [lt_cv_irix_exported_symbol], + [save_LDFLAGS=$LDFLAGS + LDFLAGS="$LDFLAGS -shared $wl-exported_symbol ${wl}foo $wl-update_registry $wl/dev/null" + AC_LINK_IFELSE( + [AC_LANG_SOURCE( + [AC_LANG_CASE([C], [[int foo (void) { return 0; }]], + [C++], [[int foo (void) { return 0; }]], + [Fortran 77], [[ + subroutine foo + end]], + [Fortran], [[ + subroutine foo + end]])])], + [lt_cv_irix_exported_symbol=yes], + [lt_cv_irix_exported_symbol=no]) + LDFLAGS=$save_LDFLAGS]) + if test yes = "$lt_cv_irix_exported_symbol"; then + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations $wl-exports_file $wl$export_symbols -o $lib' + fi + else + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -exports_file $export_symbols -o $lib' + fi + _LT_TAGVAR(archive_cmds_need_lc, $1)='no' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + _LT_TAGVAR(inherit_rpath, $1)=yes + _LT_TAGVAR(link_all_deplibs, $1)=yes + ;; + + linux*) + case $cc_basename in + tcc*) + # Fabrice Bellard et al's Tiny C Compiler + _LT_TAGVAR(ld_shlibs, $1)=yes + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' + ;; + esac + ;; + + netbsd*) + if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then + _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out + else + _LT_TAGVAR(archive_cmds, $1)='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF + fi + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir' + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + + newsos6) + _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + + *nto* | *qnx*) + ;; + + openbsd* | bitrig*) + if test -f /usr/libexec/ld.so; then + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + _LT_TAGVAR(hardcode_direct_absolute, $1)=yes + if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags $wl-retain-symbols-file,$export_symbols' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath,$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-E' + else + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath,$libdir' + fi + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + + os2*) + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(hardcode_minus_L, $1)=yes + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + shrext_cmds=.dll + _LT_TAGVAR(archive_cmds, $1)='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ + $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ + $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ + $ECHO EXPORTS >> $output_objdir/$libname.def~ + emxexp $libobjs | $SED /"_DLL_InitTerm"/d >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + _LT_TAGVAR(archive_expsym_cmds, $1)='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ + $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ + $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ + $ECHO EXPORTS >> $output_objdir/$libname.def~ + prefix_cmds="$SED"~ + if test EXPORTS = "`$SED 1q $export_symbols`"; then + prefix_cmds="$prefix_cmds -e 1d"; + fi~ + prefix_cmds="$prefix_cmds -e \"s/^\(.*\)$/_\1/g\""~ + cat $export_symbols | $prefix_cmds >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + _LT_TAGVAR(old_archive_From_new_cmds, $1)='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def' + _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes + ;; + + osf3*) + if test yes = "$GCC"; then + _LT_TAGVAR(allow_undefined_flag, $1)=' $wl-expect_unresolved $wl\*' + _LT_TAGVAR(archive_cmds, $1)='$CC -shared$allow_undefined_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' + else + _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*' + _LT_TAGVAR(archive_cmds, $1)='$CC -shared$allow_undefined_flag $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' + fi + _LT_TAGVAR(archive_cmds_need_lc, $1)='no' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + ;; + + osf4* | osf5*) # as osf3* with the addition of -msym flag + if test yes = "$GCC"; then + _LT_TAGVAR(allow_undefined_flag, $1)=' $wl-expect_unresolved $wl\*' + _LT_TAGVAR(archive_cmds, $1)='$CC -shared$allow_undefined_flag $pic_flag $libobjs $deplibs $compiler_flags $wl-msym $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + else + _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*' + _LT_TAGVAR(archive_cmds, $1)='$CC -shared$allow_undefined_flag $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~ + $CC -shared$allow_undefined_flag $wl-input $wl$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib~$RM $lib.exp' + + # Both c and cxx compiler support -rpath directly + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir' + fi + _LT_TAGVAR(archive_cmds_need_lc, $1)='no' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + ;; + + solaris*) + _LT_TAGVAR(no_undefined_flag, $1)=' -z defs' + if test yes = "$GCC"; then + wlarc='$wl' + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $wl-z ${wl}text $wl-h $wl$soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $CC -shared $pic_flag $wl-z ${wl}text $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp' + else + case `$CC -V 2>&1` in + *"Compilers 5.0"*) + wlarc='' + _LT_TAGVAR(archive_cmds, $1)='$LD -G$allow_undefined_flag -h $soname -o $lib $libobjs $deplibs $linker_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $LD -G$allow_undefined_flag -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp' + ;; + *) + wlarc='$wl' + _LT_TAGVAR(archive_cmds, $1)='$CC -G$allow_undefined_flag -h $soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $CC -G$allow_undefined_flag -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp' + ;; + esac + fi + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir' + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + case $host_os in + solaris2.[[0-5]] | solaris2.[[0-5]].*) ;; + *) + # The compiler driver will combine and reorder linker options, + # but understands '-z linker_flag'. GCC discards it without '$wl', + # but is careful enough not to reorder. + # Supported since Solaris 2.6 (maybe 2.5.1?) + if test yes = "$GCC"; then + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl-z ${wl}allextract$convenience $wl-z ${wl}defaultextract' + else + _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract' + fi + ;; + esac + _LT_TAGVAR(link_all_deplibs, $1)=yes + ;; + + sunos4*) + if test sequent = "$host_vendor"; then + # Use $CC to link under sequent, because it throws in some extra .o + # files that make .init and .fini sections work. + _LT_TAGVAR(archive_cmds, $1)='$CC -G $wl-h $soname -o $lib $libobjs $deplibs $compiler_flags' + else + _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags' + fi + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_minus_L, $1)=yes + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + + sysv4) + case $host_vendor in + sni) + _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + _LT_TAGVAR(hardcode_direct, $1)=yes # is this really true??? + ;; + siemens) + ## LD is ld it makes a PLAMLIB + ## CC just makes a GrossModule. + _LT_TAGVAR(archive_cmds, $1)='$LD -G -o $lib $libobjs $deplibs $linker_flags' + _LT_TAGVAR(reload_cmds, $1)='$CC -r -o $output$reload_objs' + _LT_TAGVAR(hardcode_direct, $1)=no + ;; + motorola) + _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + _LT_TAGVAR(hardcode_direct, $1)=no #Motorola manual says yes, but my tests say they lie + ;; + esac + runpath_var='LD_RUN_PATH' + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + + sysv4.3*) + _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + _LT_TAGVAR(export_dynamic_flag_spec, $1)='-Bexport' + ;; + + sysv4*MP*) + if test -d /usr/nec; then + _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + runpath_var=LD_RUN_PATH + hardcode_runpath_var=yes + _LT_TAGVAR(ld_shlibs, $1)=yes + fi + ;; + + sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*) + _LT_TAGVAR(no_undefined_flag, $1)='$wl-z,text' + _LT_TAGVAR(archive_cmds_need_lc, $1)=no + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + runpath_var='LD_RUN_PATH' + + if test yes = "$GCC"; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + else + _LT_TAGVAR(archive_cmds, $1)='$CC -G $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + fi + ;; + + sysv5* | sco3.2v5* | sco5v6*) + # Note: We CANNOT use -z defs as we might desire, because we do not + # link with -lc, and that would cause any symbols used from libc to + # always be unresolved, which means just about no library would + # ever link correctly. If we're not using GNU ld we use -z text + # though, which does catch some bad symbols but isn't as heavy-handed + # as -z defs. + _LT_TAGVAR(no_undefined_flag, $1)='$wl-z,text' + _LT_TAGVAR(allow_undefined_flag, $1)='$wl-z,nodefs' + _LT_TAGVAR(archive_cmds_need_lc, $1)=no + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-R,$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=':' + _LT_TAGVAR(link_all_deplibs, $1)=yes + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-Bexport' + runpath_var='LD_RUN_PATH' + + if test yes = "$GCC"; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + else + _LT_TAGVAR(archive_cmds, $1)='$CC -G $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + fi + ;; + + uts4*) + _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + + *) + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + esac + + if test sni = "$host_vendor"; then + case $host in + sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*) + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-Blargedynsym' + ;; + esac + fi + fi +]) +AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)]) +test no = "$_LT_TAGVAR(ld_shlibs, $1)" && can_build_shared=no + +_LT_TAGVAR(with_gnu_ld, $1)=$with_gnu_ld + +_LT_DECL([], [libext], [0], [Old archive suffix (normally "a")])dnl +_LT_DECL([], [shrext_cmds], [1], [Shared library suffix (normally ".so")])dnl +_LT_DECL([], [extract_expsyms_cmds], [2], + [The commands to extract the exported symbol list from a shared archive]) + +# +# Do we need to explicitly link libc? +# +case "x$_LT_TAGVAR(archive_cmds_need_lc, $1)" in +x|xyes) + # Assume -lc should be added + _LT_TAGVAR(archive_cmds_need_lc, $1)=yes + + if test yes,yes = "$GCC,$enable_shared"; then + case $_LT_TAGVAR(archive_cmds, $1) in + *'~'*) + # FIXME: we may have to deal with multi-command sequences. + ;; + '$CC '*) + # Test whether the compiler implicitly links with -lc since on some + # systems, -lgcc has to come before -lc. If gcc already passes -lc + # to ld, don't add -lc before -lgcc. + AC_CACHE_CHECK([whether -lc should be explicitly linked in], + [lt_cv_]_LT_TAGVAR(archive_cmds_need_lc, $1), + [$RM conftest* + echo "$lt_simple_compile_test_code" > conftest.$ac_ext + + if AC_TRY_EVAL(ac_compile) 2>conftest.err; then + soname=conftest + lib=conftest + libobjs=conftest.$ac_objext + deplibs= + wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1) + pic_flag=$_LT_TAGVAR(lt_prog_compiler_pic, $1) + compiler_flags=-v + linker_flags=-v + verstring= + output_objdir=. + libname=conftest + lt_save_allow_undefined_flag=$_LT_TAGVAR(allow_undefined_flag, $1) + _LT_TAGVAR(allow_undefined_flag, $1)= + if AC_TRY_EVAL(_LT_TAGVAR(archive_cmds, $1) 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1) + then + lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=no + else + lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=yes + fi + _LT_TAGVAR(allow_undefined_flag, $1)=$lt_save_allow_undefined_flag + else + cat conftest.err 1>&5 + fi + $RM conftest* + ]) + _LT_TAGVAR(archive_cmds_need_lc, $1)=$lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1) + ;; + esac + fi + ;; +esac + +_LT_TAGDECL([build_libtool_need_lc], [archive_cmds_need_lc], [0], + [Whether or not to add -lc for building shared libraries]) +_LT_TAGDECL([allow_libtool_libs_with_static_runtimes], + [enable_shared_with_static_runtimes], [0], + [Whether or not to disallow shared libs when runtime libs are static]) +_LT_TAGDECL([], [export_dynamic_flag_spec], [1], + [Compiler flag to allow reflexive dlopens]) +_LT_TAGDECL([], [whole_archive_flag_spec], [1], + [Compiler flag to generate shared objects directly from archives]) +_LT_TAGDECL([], [compiler_needs_object], [1], + [Whether the compiler copes with passing no objects directly]) +_LT_TAGDECL([], [old_archive_from_new_cmds], [2], + [Create an old-style archive from a shared archive]) +_LT_TAGDECL([], [old_archive_from_expsyms_cmds], [2], + [Create a temporary old-style archive to link instead of a shared archive]) +_LT_TAGDECL([], [archive_cmds], [2], [Commands used to build a shared archive]) +_LT_TAGDECL([], [archive_expsym_cmds], [2]) +_LT_TAGDECL([], [module_cmds], [2], + [Commands used to build a loadable module if different from building + a shared archive.]) +_LT_TAGDECL([], [module_expsym_cmds], [2]) +_LT_TAGDECL([], [with_gnu_ld], [1], + [Whether we are building with GNU ld or not]) +_LT_TAGDECL([], [allow_undefined_flag], [1], + [Flag that allows shared libraries with undefined symbols to be built]) +_LT_TAGDECL([], [no_undefined_flag], [1], + [Flag that enforces no undefined symbols]) +_LT_TAGDECL([], [hardcode_libdir_flag_spec], [1], + [Flag to hardcode $libdir into a binary during linking. + This must work even if $libdir does not exist]) +_LT_TAGDECL([], [hardcode_libdir_separator], [1], + [Whether we need a single "-rpath" flag with a separated argument]) +_LT_TAGDECL([], [hardcode_direct], [0], + [Set to "yes" if using DIR/libNAME$shared_ext during linking hardcodes + DIR into the resulting binary]) +_LT_TAGDECL([], [hardcode_direct_absolute], [0], + [Set to "yes" if using DIR/libNAME$shared_ext during linking hardcodes + DIR into the resulting binary and the resulting library dependency is + "absolute", i.e impossible to change by setting $shlibpath_var if the + library is relocated]) +_LT_TAGDECL([], [hardcode_minus_L], [0], + [Set to "yes" if using the -LDIR flag during linking hardcodes DIR + into the resulting binary]) +_LT_TAGDECL([], [hardcode_shlibpath_var], [0], + [Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR + into the resulting binary]) +_LT_TAGDECL([], [hardcode_automatic], [0], + [Set to "yes" if building a shared library automatically hardcodes DIR + into the library and all subsequent libraries and executables linked + against it]) +_LT_TAGDECL([], [inherit_rpath], [0], + [Set to yes if linker adds runtime paths of dependent libraries + to runtime path list]) +_LT_TAGDECL([], [link_all_deplibs], [0], + [Whether libtool must link a program against all its dependency libraries]) +_LT_TAGDECL([], [always_export_symbols], [0], + [Set to "yes" if exported symbols are required]) +_LT_TAGDECL([], [export_symbols_cmds], [2], + [The commands to list exported symbols]) +_LT_TAGDECL([], [exclude_expsyms], [1], + [Symbols that should not be listed in the preloaded symbols]) +_LT_TAGDECL([], [include_expsyms], [1], + [Symbols that must always be exported]) +_LT_TAGDECL([], [prelink_cmds], [2], + [Commands necessary for linking programs (against libraries) with templates]) +_LT_TAGDECL([], [postlink_cmds], [2], + [Commands necessary for finishing linking programs]) +_LT_TAGDECL([], [file_list_spec], [1], + [Specify filename containing input files]) +dnl FIXME: Not yet implemented +dnl _LT_TAGDECL([], [thread_safe_flag_spec], [1], +dnl [Compiler flag to generate thread safe objects]) +])# _LT_LINKER_SHLIBS + + +# _LT_LANG_C_CONFIG([TAG]) +# ------------------------ +# Ensure that the configuration variables for a C compiler are suitably +# defined. These variables are subsequently used by _LT_CONFIG to write +# the compiler configuration to 'libtool'. +m4_defun([_LT_LANG_C_CONFIG], +[m4_require([_LT_DECL_EGREP])dnl +lt_save_CC=$CC +AC_LANG_PUSH(C) + +# Source file extension for C test sources. +ac_ext=c + +# Object file extension for compiled C test sources. +objext=o +_LT_TAGVAR(objext, $1)=$objext + +# Code to be used in simple compile tests +lt_simple_compile_test_code="int some_variable = 0;" + +# Code to be used in simple link tests +lt_simple_link_test_code='int main(){return(0);}' + +_LT_TAG_COMPILER +# Save the default compiler, since it gets overwritten when the other +# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP. +compiler_DEFAULT=$CC + +# save warnings/boilerplate of simple test code +_LT_COMPILER_BOILERPLATE +_LT_LINKER_BOILERPLATE + +## CAVEAT EMPTOR: +## There is no encapsulation within the following macros, do not change +## the running order or otherwise move them around unless you know exactly +## what you are doing... +if test -n "$compiler"; then + _LT_COMPILER_NO_RTTI($1) + _LT_COMPILER_PIC($1) + _LT_COMPILER_C_O($1) + _LT_COMPILER_FILE_LOCKS($1) + _LT_LINKER_SHLIBS($1) + _LT_SYS_DYNAMIC_LINKER($1) + _LT_LINKER_HARDCODE_LIBPATH($1) + LT_SYS_DLOPEN_SELF + _LT_CMD_STRIPLIB + + # Report what library types will actually be built + AC_MSG_CHECKING([if libtool supports shared libraries]) + AC_MSG_RESULT([$can_build_shared]) + + AC_MSG_CHECKING([whether to build shared libraries]) + test no = "$can_build_shared" && enable_shared=no + + # On AIX, shared libraries and static libraries use the same namespace, and + # are all built from PIC. + case $host_os in + aix3*) + test yes = "$enable_shared" && enable_static=no + if test -n "$RANLIB"; then + archive_cmds="$archive_cmds~\$RANLIB \$lib" + postinstall_cmds='$RANLIB $lib' + fi + ;; + + aix[[4-9]]*) + if test ia64 != "$host_cpu"; then + case $enable_shared,$with_aix_soname,$aix_use_runtimelinking in + yes,aix,yes) ;; # shared object as lib.so file only + yes,svr4,*) ;; # shared object as lib.so archive member only + yes,*) enable_static=no ;; # shared object in lib.a archive as well + esac + fi + ;; + esac + AC_MSG_RESULT([$enable_shared]) + + AC_MSG_CHECKING([whether to build static libraries]) + # Make sure either enable_shared or enable_static is yes. + test yes = "$enable_shared" || enable_static=yes + AC_MSG_RESULT([$enable_static]) + + _LT_CONFIG($1) +fi +AC_LANG_POP +CC=$lt_save_CC +])# _LT_LANG_C_CONFIG + + +# _LT_LANG_CXX_CONFIG([TAG]) +# -------------------------- +# Ensure that the configuration variables for a C++ compiler are suitably +# defined. These variables are subsequently used by _LT_CONFIG to write +# the compiler configuration to 'libtool'. +m4_defun([_LT_LANG_CXX_CONFIG], +[m4_require([_LT_FILEUTILS_DEFAULTS])dnl +m4_require([_LT_DECL_EGREP])dnl +m4_require([_LT_PATH_MANIFEST_TOOL])dnl +if test -n "$CXX" && ( test no != "$CXX" && + ( (test g++ = "$CXX" && `g++ -v >/dev/null 2>&1` ) || + (test g++ != "$CXX"))); then + AC_PROG_CXXCPP +else + _lt_caught_CXX_error=yes +fi + +AC_LANG_PUSH(C++) +_LT_TAGVAR(archive_cmds_need_lc, $1)=no +_LT_TAGVAR(allow_undefined_flag, $1)= +_LT_TAGVAR(always_export_symbols, $1)=no +_LT_TAGVAR(archive_expsym_cmds, $1)= +_LT_TAGVAR(compiler_needs_object, $1)=no +_LT_TAGVAR(export_dynamic_flag_spec, $1)= +_LT_TAGVAR(hardcode_direct, $1)=no +_LT_TAGVAR(hardcode_direct_absolute, $1)=no +_LT_TAGVAR(hardcode_libdir_flag_spec, $1)= +_LT_TAGVAR(hardcode_libdir_separator, $1)= +_LT_TAGVAR(hardcode_minus_L, $1)=no +_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported +_LT_TAGVAR(hardcode_automatic, $1)=no +_LT_TAGVAR(inherit_rpath, $1)=no +_LT_TAGVAR(module_cmds, $1)= +_LT_TAGVAR(module_expsym_cmds, $1)= +_LT_TAGVAR(link_all_deplibs, $1)=unknown +_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds +_LT_TAGVAR(reload_flag, $1)=$reload_flag +_LT_TAGVAR(reload_cmds, $1)=$reload_cmds +_LT_TAGVAR(no_undefined_flag, $1)= +_LT_TAGVAR(whole_archive_flag_spec, $1)= +_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no + +# Source file extension for C++ test sources. +ac_ext=cpp + +# Object file extension for compiled C++ test sources. +objext=o +_LT_TAGVAR(objext, $1)=$objext + +# No sense in running all these tests if we already determined that +# the CXX compiler isn't working. Some variables (like enable_shared) +# are currently assumed to apply to all compilers on this platform, +# and will be corrupted by setting them based on a non-working compiler. +if test yes != "$_lt_caught_CXX_error"; then + # Code to be used in simple compile tests + lt_simple_compile_test_code="int some_variable = 0;" + + # Code to be used in simple link tests + lt_simple_link_test_code='int main(int, char *[[]]) { return(0); }' + + # ltmain only uses $CC for tagged configurations so make sure $CC is set. + _LT_TAG_COMPILER + + # save warnings/boilerplate of simple test code + _LT_COMPILER_BOILERPLATE + _LT_LINKER_BOILERPLATE + + # Allow CC to be a program name with arguments. + lt_save_CC=$CC + lt_save_CFLAGS=$CFLAGS + lt_save_LD=$LD + lt_save_GCC=$GCC + GCC=$GXX + lt_save_with_gnu_ld=$with_gnu_ld + lt_save_path_LD=$lt_cv_path_LD + if test -n "${lt_cv_prog_gnu_ldcxx+set}"; then + lt_cv_prog_gnu_ld=$lt_cv_prog_gnu_ldcxx + else + $as_unset lt_cv_prog_gnu_ld + fi + if test -n "${lt_cv_path_LDCXX+set}"; then + lt_cv_path_LD=$lt_cv_path_LDCXX + else + $as_unset lt_cv_path_LD + fi + test -z "${LDCXX+set}" || LD=$LDCXX + CC=${CXX-"c++"} + CFLAGS=$CXXFLAGS + compiler=$CC + _LT_TAGVAR(compiler, $1)=$CC + _LT_CC_BASENAME([$compiler]) + + if test -n "$compiler"; then + # We don't want -fno-exception when compiling C++ code, so set the + # no_builtin_flag separately + if test yes = "$GXX"; then + _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin' + else + _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)= + fi + + if test yes = "$GXX"; then + # Set up default GNU C++ configuration + + LT_PATH_LD + + # Check if GNU C++ uses GNU ld as the underlying linker, since the + # archiving commands below assume that GNU ld is being used. + if test yes = "$with_gnu_ld"; then + _LT_TAGVAR(archive_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-dynamic' + + # If archive_cmds runs LD, not CC, wlarc should be empty + # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to + # investigate it a little bit more. (MM) + wlarc='$wl' + + # ancient GNU ld didn't support --whole-archive et. al. + if eval "`$CC -print-prog-name=ld` --help 2>&1" | + $GREP 'no-whole-archive' > /dev/null; then + _LT_TAGVAR(whole_archive_flag_spec, $1)=$wlarc'--whole-archive$convenience '$wlarc'--no-whole-archive' + else + _LT_TAGVAR(whole_archive_flag_spec, $1)= + fi + else + with_gnu_ld=no + wlarc= + + # A generic and very simple default shared library creation + # command for GNU C++ for the case where it uses the native + # linker, instead of GNU ld. If possible, this setting should + # overridden to take advantage of the native linker features on + # the platform it is being used on. + _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib' + fi + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"' + + else + GXX=no + with_gnu_ld=no + wlarc= + fi + + # PORTME: fill in a description of your system's C++ link characteristics + AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries]) + _LT_TAGVAR(ld_shlibs, $1)=yes + case $host_os in + aix3*) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + aix[[4-9]]*) + if test ia64 = "$host_cpu"; then + # On IA64, the linker does run time linking by default, so we don't + # have to do anything special. + aix_use_runtimelinking=no + exp_sym_flag='-Bexport' + no_entry_flag= + else + aix_use_runtimelinking=no + + # Test if we are trying to use run time linking or normal + # AIX style linking. If -brtl is somewhere in LDFLAGS, we + # have runtime linking enabled, and use it for executables. + # For shared libraries, we enable/disable runtime linking + # depending on the kind of the shared library created - + # when "with_aix_soname,aix_use_runtimelinking" is: + # "aix,no" lib.a(lib.so.V) shared, rtl:no, for executables + # "aix,yes" lib.so shared, rtl:yes, for executables + # lib.a static archive + # "both,no" lib.so.V(shr.o) shared, rtl:yes + # lib.a(lib.so.V) shared, rtl:no, for executables + # "both,yes" lib.so.V(shr.o) shared, rtl:yes, for executables + # lib.a(lib.so.V) shared, rtl:no + # "svr4,*" lib.so.V(shr.o) shared, rtl:yes, for executables + # lib.a static archive + case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*) + for ld_flag in $LDFLAGS; do + case $ld_flag in + *-brtl*) + aix_use_runtimelinking=yes + break + ;; + esac + done + if test svr4,no = "$with_aix_soname,$aix_use_runtimelinking"; then + # With aix-soname=svr4, we create the lib.so.V shared archives only, + # so we don't have lib.a shared libs to link our executables. + # We have to force runtime linking in this case. + aix_use_runtimelinking=yes + LDFLAGS="$LDFLAGS -Wl,-brtl" + fi + ;; + esac + + exp_sym_flag='-bexport' + no_entry_flag='-bnoentry' + fi + + # When large executables or shared objects are built, AIX ld can + # have problems creating the table of contents. If linking a library + # or program results in "error TOC overflow" add -mminimal-toc to + # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not + # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS. + + _LT_TAGVAR(archive_cmds, $1)='' + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_direct_absolute, $1)=yes + _LT_TAGVAR(hardcode_libdir_separator, $1)=':' + _LT_TAGVAR(link_all_deplibs, $1)=yes + _LT_TAGVAR(file_list_spec, $1)='$wl-f,' + case $with_aix_soname,$aix_use_runtimelinking in + aix,*) ;; # no import file + svr4,* | *,yes) # use import file + # The Import File defines what to hardcode. + _LT_TAGVAR(hardcode_direct, $1)=no + _LT_TAGVAR(hardcode_direct_absolute, $1)=no + ;; + esac + + if test yes = "$GXX"; then + case $host_os in aix4.[[012]]|aix4.[[012]].*) + # We only want to do this on AIX 4.2 and lower, the check + # below for broken collect2 doesn't work under 4.3+ + collect2name=`$CC -print-prog-name=collect2` + if test -f "$collect2name" && + strings "$collect2name" | $GREP resolve_lib_name >/dev/null + then + # We have reworked collect2 + : + else + # We have old collect2 + _LT_TAGVAR(hardcode_direct, $1)=unsupported + # It fails to find uninstalled libraries when the uninstalled + # path is not listed in the libpath. Setting hardcode_minus_L + # to unsupported forces relinking + _LT_TAGVAR(hardcode_minus_L, $1)=yes + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)= + fi + esac + shared_flag='-shared' + if test yes = "$aix_use_runtimelinking"; then + shared_flag=$shared_flag' $wl-G' + fi + # Need to ensure runtime linking is disabled for the traditional + # shared library, or the linker may eventually find shared libraries + # /with/ Import File - we do not want to mix them. + shared_flag_aix='-shared' + shared_flag_svr4='-shared $wl-G' + else + # not using gcc + if test ia64 = "$host_cpu"; then + # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release + # chokes on -Wl,-G. The following line is correct: + shared_flag='-G' + else + if test yes = "$aix_use_runtimelinking"; then + shared_flag='$wl-G' + else + shared_flag='$wl-bM:SRE' + fi + shared_flag_aix='$wl-bM:SRE' + shared_flag_svr4='$wl-G' + fi + fi + + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-bexpall' + # It seems that -bexpall does not export symbols beginning with + # underscore (_), so it is better to generate a list of symbols to + # export. + _LT_TAGVAR(always_export_symbols, $1)=yes + if test aix,yes = "$with_aix_soname,$aix_use_runtimelinking"; then + # Warning - without using the other runtime loading flags (-brtl), + # -berok will link without error, but may produce a broken library. + # The "-G" linker flag allows undefined symbols. + _LT_TAGVAR(no_undefined_flag, $1)='-bernotok' + # Determine the default libpath from the value encoded in an empty + # executable. + _LT_SYS_MODULE_PATH_AIX([$1]) + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-blibpath:$libdir:'"$aix_libpath" + + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs $wl'$no_entry_flag' $compiler_flags `if test -n "$allow_undefined_flag"; then func_echo_all "$wl$allow_undefined_flag"; else :; fi` $wl'$exp_sym_flag:\$export_symbols' '$shared_flag + else + if test ia64 = "$host_cpu"; then + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-R $libdir:/usr/lib:/lib' + _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs" + _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\$wl$no_entry_flag"' $compiler_flags $wl$allow_undefined_flag '"\$wl$exp_sym_flag:\$export_symbols" + else + # Determine the default libpath from the value encoded in an + # empty executable. + _LT_SYS_MODULE_PATH_AIX([$1]) + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-blibpath:$libdir:'"$aix_libpath" + # Warning - without using the other run time loading flags, + # -berok will link without error, but may produce a broken library. + _LT_TAGVAR(no_undefined_flag, $1)=' $wl-bernotok' + _LT_TAGVAR(allow_undefined_flag, $1)=' $wl-berok' + if test yes = "$with_gnu_ld"; then + # We only use this code for GNU lds that support --whole-archive. + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive$convenience $wl--no-whole-archive' + else + # Exported symbols can be pulled into shared objects from archives + _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience' + fi + _LT_TAGVAR(archive_cmds_need_lc, $1)=yes + _LT_TAGVAR(archive_expsym_cmds, $1)='$RM -r $output_objdir/$realname.d~$MKDIR $output_objdir/$realname.d' + # -brtl affects multiple linker settings, -berok does not and is overridden later + compiler_flags_filtered='`func_echo_all "$compiler_flags " | $SED -e "s%-brtl\\([[, ]]\\)%-berok\\1%g"`' + if test svr4 != "$with_aix_soname"; then + # This is similar to how AIX traditionally builds its shared + # libraries. Need -bnortl late, we may have -brtl in LDFLAGS. + _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$CC '$shared_flag_aix' -o $output_objdir/$realname.d/$soname $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$realname.d/$soname' + fi + if test aix != "$with_aix_soname"; then + _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$CC '$shared_flag_svr4' -o $output_objdir/$realname.d/$shared_archive_member_spec.o $libobjs $deplibs $wl-bnoentry '$compiler_flags_filtered'$wl-bE:$export_symbols$allow_undefined_flag~$STRIP -e $output_objdir/$realname.d/$shared_archive_member_spec.o~( func_echo_all "#! $soname($shared_archive_member_spec.o)"; if test shr_64 = "$shared_archive_member_spec"; then func_echo_all "# 64"; else func_echo_all "# 32"; fi; cat $export_symbols ) > $output_objdir/$realname.d/$shared_archive_member_spec.imp~$AR $AR_FLAGS $output_objdir/$soname $output_objdir/$realname.d/$shared_archive_member_spec.o $output_objdir/$realname.d/$shared_archive_member_spec.imp' + else + # used by -dlpreopen to get the symbols + _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$MV $output_objdir/$realname.d/$soname $output_objdir' + fi + _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_expsym_cmds, $1)"'~$RM -r $output_objdir/$realname.d' + fi + fi + ;; + + beos*) + if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + # Joseph Beckenbach says some releases of gcc + # support --undefined. This deserves some investigation. FIXME + _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + + chorus*) + case $cc_basename in + *) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + esac + ;; + + cygwin* | mingw* | pw32* | cegcc*) + case $GXX,$cc_basename in + ,cl* | no,cl*) + # Native MSVC + # hardcode_libdir_flag_spec is actually meaningless, as there is + # no search path for DLLs. + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' ' + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + _LT_TAGVAR(always_export_symbols, $1)=yes + _LT_TAGVAR(file_list_spec, $1)='@' + # Tell ltmain to make .lib files, not .a files. + libext=lib + # Tell ltmain to make .dll files, not .so files. + shrext_cmds=.dll + # FIXME: Setting linknames here is a bad hack. + _LT_TAGVAR(archive_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~linknames=' + _LT_TAGVAR(archive_expsym_cmds, $1)='if _LT_DLL_DEF_P([$export_symbols]); then + cp "$export_symbols" "$output_objdir/$soname.def"; + echo "$tool_output_objdir$soname.def" > "$output_objdir/$soname.exp"; + else + $SED -e '\''s/^/-link -EXPORT:/'\'' < $export_symbols > $output_objdir/$soname.exp; + fi~ + $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~ + linknames=' + # The linker will not automatically build a static lib if we build a DLL. + # _LT_TAGVAR(old_archive_from_new_cmds, $1)='true' + _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes + # Don't use ranlib + _LT_TAGVAR(old_postinstall_cmds, $1)='chmod 644 $oldlib' + _LT_TAGVAR(postlink_cmds, $1)='lt_outputfile="@OUTPUT@"~ + lt_tool_outputfile="@TOOL_OUTPUT@"~ + case $lt_outputfile in + *.exe|*.EXE) ;; + *) + lt_outputfile=$lt_outputfile.exe + lt_tool_outputfile=$lt_tool_outputfile.exe + ;; + esac~ + func_to_tool_file "$lt_outputfile"~ + if test : != "$MANIFEST_TOOL" && test -f "$lt_outputfile.manifest"; then + $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1; + $RM "$lt_outputfile.manifest"; + fi' + ;; + *) + # g++ + # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless, + # as there is no search path for DLLs. + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-all-symbols' + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + _LT_TAGVAR(always_export_symbols, $1)=no + _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes + + if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib' + # If the export-symbols file already is a .def file, use it as + # is; otherwise, prepend EXPORTS... + _LT_TAGVAR(archive_expsym_cmds, $1)='if _LT_DLL_DEF_P([$export_symbols]); then + cp $export_symbols $output_objdir/$soname.def; + else + echo EXPORTS > $output_objdir/$soname.def; + cat $export_symbols >> $output_objdir/$soname.def; + fi~ + $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib' + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + esac + ;; + darwin* | rhapsody*) + _LT_DARWIN_LINKER_FEATURES($1) + ;; + + os2*) + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir' + _LT_TAGVAR(hardcode_minus_L, $1)=yes + _LT_TAGVAR(allow_undefined_flag, $1)=unsupported + shrext_cmds=.dll + _LT_TAGVAR(archive_cmds, $1)='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ + $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ + $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ + $ECHO EXPORTS >> $output_objdir/$libname.def~ + emxexp $libobjs | $SED /"_DLL_InitTerm"/d >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + _LT_TAGVAR(archive_expsym_cmds, $1)='$ECHO "LIBRARY ${soname%$shared_ext} INITINSTANCE TERMINSTANCE" > $output_objdir/$libname.def~ + $ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~ + $ECHO "DATA MULTIPLE NONSHARED" >> $output_objdir/$libname.def~ + $ECHO EXPORTS >> $output_objdir/$libname.def~ + prefix_cmds="$SED"~ + if test EXPORTS = "`$SED 1q $export_symbols`"; then + prefix_cmds="$prefix_cmds -e 1d"; + fi~ + prefix_cmds="$prefix_cmds -e \"s/^\(.*\)$/_\1/g\""~ + cat $export_symbols | $prefix_cmds >> $output_objdir/$libname.def~ + $CC -Zdll -Zcrtdll -o $output_objdir/$soname $libobjs $deplibs $compiler_flags $output_objdir/$libname.def~ + emximp -o $lib $output_objdir/$libname.def' + _LT_TAGVAR(old_archive_From_new_cmds, $1)='emximp -o $output_objdir/${libname}_dll.a $output_objdir/$libname.def' + _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes + ;; + + dgux*) + case $cc_basename in + ec++*) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + ghcx*) + # Green Hills C++ Compiler + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + *) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + esac + ;; + + freebsd2.*) + # C++ shared libraries reported to be fairly broken before + # switch to ELF + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + + freebsd-elf*) + _LT_TAGVAR(archive_cmds_need_lc, $1)=no + ;; + + freebsd* | dragonfly*) + # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF + # conventions + _LT_TAGVAR(ld_shlibs, $1)=yes + ;; + + haiku*) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(link_all_deplibs, $1)=yes + ;; + + hpux9*) + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl+b $wl$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-E' + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH, + # but as the default + # location of the library. + + case $cc_basename in + CC*) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + aCC*) + _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -b $wl+b $wl$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib' + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + # + # There doesn't appear to be a way to prevent this compiler from + # explicitly linking system object files so we need to strip them + # from the output so that they don't get included in the library + # dependencies. + output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"' + ;; + *) + if test yes = "$GXX"; then + _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib $pic_flag $wl+b $wl$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib' + else + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + esac + ;; + + hpux10*|hpux11*) + if test no = "$with_gnu_ld"; then + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl+b $wl$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + + case $host_cpu in + hppa*64*|ia64*) + ;; + *) + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-E' + ;; + esac + fi + case $host_cpu in + hppa*64*|ia64*) + _LT_TAGVAR(hardcode_direct, $1)=no + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + ;; + *) + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_direct_absolute, $1)=yes + _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH, + # but as the default + # location of the library. + ;; + esac + + case $cc_basename in + CC*) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + aCC*) + case $host_cpu in + hppa*64*) + _LT_TAGVAR(archive_cmds, $1)='$CC -b $wl+h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' + ;; + ia64*) + _LT_TAGVAR(archive_cmds, $1)='$CC -b $wl+h $wl$soname $wl+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' + ;; + *) + _LT_TAGVAR(archive_cmds, $1)='$CC -b $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' + ;; + esac + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + # + # There doesn't appear to be a way to prevent this compiler from + # explicitly linking system object files so we need to strip them + # from the output so that they don't get included in the library + # dependencies. + output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"' + ;; + *) + if test yes = "$GXX"; then + if test no = "$with_gnu_ld"; then + case $host_cpu in + hppa*64*) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC $wl+h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' + ;; + ia64*) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $pic_flag $wl+h $wl$soname $wl+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' + ;; + *) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $pic_flag $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' + ;; + esac + fi + else + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + esac + ;; + + interix[[3-9]]*) + _LT_TAGVAR(hardcode_direct, $1)=no + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath,$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-E' + # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc. + # Instead, shared libraries are loaded at an image base (0x10000000 by + # default) and relocated if they conflict, which is a slow very memory + # consuming and fragmenting process. To avoid this, we pick a random, + # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link + # time. Moving up from 0x10000000 also allows more sbrk(2) space. + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s|^|_|" $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h,$soname $wl--retain-symbols-file,$output_objdir/$soname.expsym $wl--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib' + ;; + irix5* | irix6*) + case $cc_basename in + CC*) + # SGI C++ + _LT_TAGVAR(archive_cmds, $1)='$CC -shared -all -multigot $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' + + # Archives containing C++ object files must be created using + # "CC -ar", where "CC" is the IRIX C++ compiler. This is + # necessary to make sure instantiated templates are included + # in the archive. + _LT_TAGVAR(old_archive_cmds, $1)='$CC -ar -WR,-u -o $oldlib $oldobjs' + ;; + *) + if test yes = "$GXX"; then + if test no = "$with_gnu_ld"; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' + else + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` -o $lib' + fi + fi + _LT_TAGVAR(link_all_deplibs, $1)=yes + ;; + esac + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + _LT_TAGVAR(inherit_rpath, $1)=yes + ;; + + linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu*) + case $cc_basename in + KCC*) + # Kuck and Associates, Inc. (KAI) C++ Compiler + + # KCC will only create a shared library if the output file + # ends with ".so" (or ".sl" for HP-UX), so rename the library + # to its proper name (with version) after linking. + _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\$tempext\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\$tempext\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib $wl-retain-symbols-file,$export_symbols; mv \$templib $lib' + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + # + # There doesn't appear to be a way to prevent this compiler from + # explicitly linking system object files so we need to strip them + # from the output so that they don't get included in the library + # dependencies. + output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 | $GREP "ld"`; rm -f libconftest$shared_ext; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"' + + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath,$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-dynamic' + + # Archives containing C++ object files must be created using + # "CC -Bstatic", where "CC" is the KAI C++ compiler. + _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs' + ;; + icpc* | ecpc* ) + # Intel C++ + with_gnu_ld=yes + # version 8.0 and above of icpc choke on multiply defined symbols + # if we add $predep_objects and $postdep_objects, however 7.1 and + # earlier do not add the objects themselves. + case `$CC -V 2>&1` in + *"Version 7."*) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + ;; + *) # Version 8.0 or newer + tmp_idyn= + case $host_cpu in + ia64*) tmp_idyn=' -i_dynamic';; + esac + _LT_TAGVAR(archive_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + ;; + esac + _LT_TAGVAR(archive_cmds_need_lc, $1)=no + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath,$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-dynamic' + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive$convenience $wl--no-whole-archive' + ;; + pgCC* | pgcpp*) + # Portland Group C++ compiler + case `$CC -V` in + *pgCC\ [[1-5]].* | *pgcpp\ [[1-5]].*) + _LT_TAGVAR(prelink_cmds, $1)='tpldir=Template.dir~ + rm -rf $tpldir~ + $CC --prelink_objects --instantiation_dir $tpldir $objs $libobjs $compile_deplibs~ + compile_command="$compile_command `find $tpldir -name \*.o | sort | $NL2SP`"' + _LT_TAGVAR(old_archive_cmds, $1)='tpldir=Template.dir~ + rm -rf $tpldir~ + $CC --prelink_objects --instantiation_dir $tpldir $oldobjs$old_deplibs~ + $AR $AR_FLAGS $oldlib$oldobjs$old_deplibs `find $tpldir -name \*.o | sort | $NL2SP`~ + $RANLIB $oldlib' + _LT_TAGVAR(archive_cmds, $1)='tpldir=Template.dir~ + rm -rf $tpldir~ + $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~ + $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='tpldir=Template.dir~ + rm -rf $tpldir~ + $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~ + $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + ;; + *) # Version 6 and above use weak symbols + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib' + ;; + esac + + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl--rpath $wl$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-dynamic' + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + ;; + cxx*) + # Compaq C++ + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib $wl-retain-symbols-file $wl$export_symbols' + + runpath_var=LD_RUN_PATH + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + # + # There doesn't appear to be a way to prevent this compiler from + # explicitly linking system object files so we need to strip them + # from the output so that they don't get included in the library + # dependencies. + output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld"`; templist=`func_echo_all "$templist" | $SED "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "X$list" | $Xsed' + ;; + xl* | mpixl* | bgxl*) + # IBM XL 8.0 on PPC, with GNU ld + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-dynamic' + _LT_TAGVAR(archive_cmds, $1)='$CC -qmkshrobj $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib' + if test yes = "$supports_anon_versioning"; then + _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~ + cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~ + echo "local: *; };" >> $output_objdir/$libname.ver~ + $CC -qmkshrobj $libobjs $deplibs $compiler_flags $wl-soname $wl$soname $wl-version-script $wl$output_objdir/$libname.ver -o $lib' + fi + ;; + *) + case `$CC -V 2>&1 | sed 5q` in + *Sun\ C*) + # Sun C++ 5.9 + _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs' + _LT_TAGVAR(archive_cmds, $1)='$CC -G$allow_undefined_flag -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G$allow_undefined_flag -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-retain-symbols-file $wl$export_symbols' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir' + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` $wl--no-whole-archive' + _LT_TAGVAR(compiler_needs_object, $1)=yes + + # Not sure whether something based on + # $CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 + # would be better. + output_verbose_link_cmd='func_echo_all' + + # Archives containing C++ object files must be created using + # "CC -xar", where "CC" is the Sun C++ compiler. This is + # necessary to make sure instantiated templates are included + # in the archive. + _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs' + ;; + esac + ;; + esac + ;; + + lynxos*) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + + m88k*) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + + mvs*) + case $cc_basename in + cxx*) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + *) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + esac + ;; + + netbsd*) + if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then + _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags' + wlarc= + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir' + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + fi + # Workaround some broken pre-1.5 toolchains + output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP conftest.$objext | $SED -e "s:-lgcc -lc -lgcc::"' + ;; + + *nto* | *qnx*) + _LT_TAGVAR(ld_shlibs, $1)=yes + ;; + + openbsd* | bitrig*) + if test -f /usr/libexec/ld.so; then + _LT_TAGVAR(hardcode_direct, $1)=yes + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + _LT_TAGVAR(hardcode_direct_absolute, $1)=yes + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath,$libdir' + if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`"; then + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-retain-symbols-file,$export_symbols -o $lib' + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-E' + _LT_TAGVAR(whole_archive_flag_spec, $1)=$wlarc'--whole-archive$convenience '$wlarc'--no-whole-archive' + fi + output_verbose_link_cmd=func_echo_all + else + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + + osf3* | osf4* | osf5*) + case $cc_basename in + KCC*) + # Kuck and Associates, Inc. (KAI) C++ Compiler + + # KCC will only create a shared library if the output file + # ends with ".so" (or ".sl" for HP-UX), so rename the library + # to its proper name (with version) after linking. + _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo "$lib" | $SED -e "s/\$tempext\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib' + + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath,$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + + # Archives containing C++ object files must be created using + # the KAI C++ compiler. + case $host in + osf3*) _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs' ;; + *) _LT_TAGVAR(old_archive_cmds, $1)='$CC -o $oldlib $oldobjs' ;; + esac + ;; + RCC*) + # Rational C++ 2.4.1 + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + cxx*) + case $host in + osf3*) + _LT_TAGVAR(allow_undefined_flag, $1)=' $wl-expect_unresolved $wl\*' + _LT_TAGVAR(archive_cmds, $1)='$CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $soname `test -n "$verstring" && func_echo_all "$wl-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + ;; + *) + _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*' + _LT_TAGVAR(archive_cmds, $1)='$CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done~ + echo "-hidden">> $lib.exp~ + $CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname $wl-input $wl$lib.exp `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry $output_objdir/so_locations -o $lib~ + $RM $lib.exp' + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir' + ;; + esac + + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + # + # There doesn't appear to be a way to prevent this compiler from + # explicitly linking system object files so we need to strip them + # from the output so that they don't get included in the library + # dependencies. + output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld" | $GREP -v "ld:"`; templist=`func_echo_all "$templist" | $SED "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"' + ;; + *) + if test yes,no = "$GXX,$with_gnu_ld"; then + _LT_TAGVAR(allow_undefined_flag, $1)=' $wl-expect_unresolved $wl\*' + case $host in + osf3*) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' + ;; + *) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-msym $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib' + ;; + esac + + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=: + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"' + + else + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + fi + ;; + esac + ;; + + psos*) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + + sunos4*) + case $cc_basename in + CC*) + # Sun C++ 4.x + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + lcc*) + # Lucid + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + *) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + esac + ;; + + solaris*) + case $cc_basename in + CC* | sunCC*) + # Sun C++ 4.2, 5.x and Centerline C++ + _LT_TAGVAR(archive_cmds_need_lc,$1)=yes + _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs' + _LT_TAGVAR(archive_cmds, $1)='$CC -G$allow_undefined_flag -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $CC -G$allow_undefined_flag $wl-M $wl$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp' + + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir' + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + case $host_os in + solaris2.[[0-5]] | solaris2.[[0-5]].*) ;; + *) + # The compiler driver will combine and reorder linker options, + # but understands '-z linker_flag'. + # Supported since Solaris 2.6 (maybe 2.5.1?) + _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract' + ;; + esac + _LT_TAGVAR(link_all_deplibs, $1)=yes + + output_verbose_link_cmd='func_echo_all' + + # Archives containing C++ object files must be created using + # "CC -xar", where "CC" is the Sun C++ compiler. This is + # necessary to make sure instantiated templates are included + # in the archive. + _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs' + ;; + gcx*) + # Green Hills C++ Compiler + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib' + + # The C++ compiler must be used to create the archive. + _LT_TAGVAR(old_archive_cmds, $1)='$CC $LDFLAGS -archive -o $oldlib $oldobjs' + ;; + *) + # GNU C++ compiler with Solaris linker + if test yes,no = "$GXX,$with_gnu_ld"; then + _LT_TAGVAR(no_undefined_flag, $1)=' $wl-z ${wl}defs' + if $CC --version | $GREP -v '^2\.7' > /dev/null; then + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $CC -shared $pic_flag -nostdlib $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp' + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"' + else + # g++ 2.7 appears to require '-G' NOT '-shared' on this + # platform. + _LT_TAGVAR(archive_cmds, $1)='$CC -G -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib' + _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ + $CC -G -nostdlib $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp' + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"' + fi + + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-R $wl$libdir' + case $host_os in + solaris2.[[0-5]] | solaris2.[[0-5]].*) ;; + *) + _LT_TAGVAR(whole_archive_flag_spec, $1)='$wl-z ${wl}allextract$convenience $wl-z ${wl}defaultextract' + ;; + esac + fi + ;; + esac + ;; + + sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*) + _LT_TAGVAR(no_undefined_flag, $1)='$wl-z,text' + _LT_TAGVAR(archive_cmds_need_lc, $1)=no + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + runpath_var='LD_RUN_PATH' + + case $cc_basename in + CC*) + _LT_TAGVAR(archive_cmds, $1)='$CC -G $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + ;; + *) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + ;; + esac + ;; + + sysv5* | sco3.2v5* | sco5v6*) + # Note: We CANNOT use -z defs as we might desire, because we do not + # link with -lc, and that would cause any symbols used from libc to + # always be unresolved, which means just about no library would + # ever link correctly. If we're not using GNU ld we use -z text + # though, which does catch some bad symbols but isn't as heavy-handed + # as -z defs. + _LT_TAGVAR(no_undefined_flag, $1)='$wl-z,text' + _LT_TAGVAR(allow_undefined_flag, $1)='$wl-z,nodefs' + _LT_TAGVAR(archive_cmds_need_lc, $1)=no + _LT_TAGVAR(hardcode_shlibpath_var, $1)=no + _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-R,$libdir' + _LT_TAGVAR(hardcode_libdir_separator, $1)=':' + _LT_TAGVAR(link_all_deplibs, $1)=yes + _LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl-Bexport' + runpath_var='LD_RUN_PATH' + + case $cc_basename in + CC*) + _LT_TAGVAR(archive_cmds, $1)='$CC -G $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(old_archive_cmds, $1)='$CC -Tprelink_objects $oldobjs~ + '"$_LT_TAGVAR(old_archive_cmds, $1)" + _LT_TAGVAR(reload_cmds, $1)='$CC -Tprelink_objects $reload_objs~ + '"$_LT_TAGVAR(reload_cmds, $1)" + ;; + *) + _LT_TAGVAR(archive_cmds, $1)='$CC -shared $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $wl-Bexport:$export_symbols $wl-h,$soname -o $lib $libobjs $deplibs $compiler_flags' + ;; + esac + ;; + + tandem*) + case $cc_basename in + NCC*) + # NonStop-UX NCC 3.20 + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + *) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + esac + ;; + + vxworks*) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + + *) + # FIXME: insert proper C++ library support + _LT_TAGVAR(ld_shlibs, $1)=no + ;; + esac + + AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)]) + test no = "$_LT_TAGVAR(ld_shlibs, $1)" && can_build_shared=no + + _LT_TAGVAR(GCC, $1)=$GXX + _LT_TAGVAR(LD, $1)=$LD + + ## CAVEAT EMPTOR: + ## There is no encapsulation within the following macros, do not change + ## the running order or otherwise move them around unless you know exactly + ## what you are doing... + _LT_SYS_HIDDEN_LIBDEPS($1) + _LT_COMPILER_PIC($1) + _LT_COMPILER_C_O($1) + _LT_COMPILER_FILE_LOCKS($1) + _LT_LINKER_SHLIBS($1) + _LT_SYS_DYNAMIC_LINKER($1) + _LT_LINKER_HARDCODE_LIBPATH($1) + + _LT_CONFIG($1) + fi # test -n "$compiler" + + CC=$lt_save_CC + CFLAGS=$lt_save_CFLAGS + LDCXX=$LD + LD=$lt_save_LD + GCC=$lt_save_GCC + with_gnu_ld=$lt_save_with_gnu_ld + lt_cv_path_LDCXX=$lt_cv_path_LD + lt_cv_path_LD=$lt_save_path_LD + lt_cv_prog_gnu_ldcxx=$lt_cv_prog_gnu_ld + lt_cv_prog_gnu_ld=$lt_save_with_gnu_ld +fi # test yes != "$_lt_caught_CXX_error" + +AC_LANG_POP +])# _LT_LANG_CXX_CONFIG + + +# _LT_FUNC_STRIPNAME_CNF +# ---------------------- +# func_stripname_cnf prefix suffix name +# strip PREFIX and SUFFIX off of NAME. +# PREFIX and SUFFIX must not contain globbing or regex special +# characters, hashes, percent signs, but SUFFIX may contain a leading +# dot (in which case that matches only a dot). +# +# This function is identical to the (non-XSI) version of func_stripname, +# except this one can be used by m4 code that may be executed by configure, +# rather than the libtool script. +m4_defun([_LT_FUNC_STRIPNAME_CNF],[dnl +AC_REQUIRE([_LT_DECL_SED]) +AC_REQUIRE([_LT_PROG_ECHO_BACKSLASH]) +func_stripname_cnf () +{ + case @S|@2 in + .*) func_stripname_result=`$ECHO "@S|@3" | $SED "s%^@S|@1%%; s%\\\\@S|@2\$%%"`;; + *) func_stripname_result=`$ECHO "@S|@3" | $SED "s%^@S|@1%%; s%@S|@2\$%%"`;; + esac +} # func_stripname_cnf +])# _LT_FUNC_STRIPNAME_CNF + + +# _LT_SYS_HIDDEN_LIBDEPS([TAGNAME]) +# --------------------------------- +# Figure out "hidden" library dependencies from verbose +# compiler output when linking a shared library. +# Parse the compiler output and extract the necessary +# objects, libraries and library flags. +m4_defun([_LT_SYS_HIDDEN_LIBDEPS], +[m4_require([_LT_FILEUTILS_DEFAULTS])dnl +AC_REQUIRE([_LT_FUNC_STRIPNAME_CNF])dnl +# Dependencies to place before and after the object being linked: +_LT_TAGVAR(predep_objects, $1)= +_LT_TAGVAR(postdep_objects, $1)= +_LT_TAGVAR(predeps, $1)= +_LT_TAGVAR(postdeps, $1)= +_LT_TAGVAR(compiler_lib_search_path, $1)= + +dnl we can't use the lt_simple_compile_test_code here, +dnl because it contains code intended for an executable, +dnl not a library. It's possible we should let each +dnl tag define a new lt_????_link_test_code variable, +dnl but it's only used here... +m4_if([$1], [], [cat > conftest.$ac_ext <<_LT_EOF +int a; +void foo (void) { a = 0; } +_LT_EOF +], [$1], [CXX], [cat > conftest.$ac_ext <<_LT_EOF +class Foo +{ +public: + Foo (void) { a = 0; } +private: + int a; +}; +_LT_EOF +], [$1], [F77], [cat > conftest.$ac_ext <<_LT_EOF + subroutine foo + implicit none + integer*4 a + a=0 + return + end +_LT_EOF +], [$1], [FC], [cat > conftest.$ac_ext <<_LT_EOF + subroutine foo + implicit none + integer a + a=0 + return + end +_LT_EOF +], [$1], [GCJ], [cat > conftest.$ac_ext <<_LT_EOF +public class foo { + private int a; + public void bar (void) { + a = 0; + } +}; +_LT_EOF +], [$1], [GO], [cat > conftest.$ac_ext <<_LT_EOF +package foo +func foo() { +} +_LT_EOF +]) + +_lt_libdeps_save_CFLAGS=$CFLAGS +case "$CC $CFLAGS " in #( +*\ -flto*\ *) CFLAGS="$CFLAGS -fno-lto" ;; +*\ -fwhopr*\ *) CFLAGS="$CFLAGS -fno-whopr" ;; +*\ -fuse-linker-plugin*\ *) CFLAGS="$CFLAGS -fno-use-linker-plugin" ;; +esac + +dnl Parse the compiler output and extract the necessary +dnl objects, libraries and library flags. +if AC_TRY_EVAL(ac_compile); then + # Parse the compiler output and extract the necessary + # objects, libraries and library flags. + + # Sentinel used to keep track of whether or not we are before + # the conftest object file. + pre_test_object_deps_done=no + + for p in `eval "$output_verbose_link_cmd"`; do + case $prev$p in + + -L* | -R* | -l*) + # Some compilers place space between "-{L,R}" and the path. + # Remove the space. + if test x-L = "$p" || + test x-R = "$p"; then + prev=$p + continue + fi + + # Expand the sysroot to ease extracting the directories later. + if test -z "$prev"; then + case $p in + -L*) func_stripname_cnf '-L' '' "$p"; prev=-L; p=$func_stripname_result ;; + -R*) func_stripname_cnf '-R' '' "$p"; prev=-R; p=$func_stripname_result ;; + -l*) func_stripname_cnf '-l' '' "$p"; prev=-l; p=$func_stripname_result ;; + esac + fi + case $p in + =*) func_stripname_cnf '=' '' "$p"; p=$lt_sysroot$func_stripname_result ;; + esac + if test no = "$pre_test_object_deps_done"; then + case $prev in + -L | -R) + # Internal compiler library paths should come after those + # provided the user. The postdeps already come after the + # user supplied libs so there is no need to process them. + if test -z "$_LT_TAGVAR(compiler_lib_search_path, $1)"; then + _LT_TAGVAR(compiler_lib_search_path, $1)=$prev$p + else + _LT_TAGVAR(compiler_lib_search_path, $1)="${_LT_TAGVAR(compiler_lib_search_path, $1)} $prev$p" + fi + ;; + # The "-l" case would never come before the object being + # linked, so don't bother handling this case. + esac + else + if test -z "$_LT_TAGVAR(postdeps, $1)"; then + _LT_TAGVAR(postdeps, $1)=$prev$p + else + _LT_TAGVAR(postdeps, $1)="${_LT_TAGVAR(postdeps, $1)} $prev$p" + fi + fi + prev= + ;; + + *.lto.$objext) ;; # Ignore GCC LTO objects + *.$objext) + # This assumes that the test object file only shows up + # once in the compiler output. + if test "$p" = "conftest.$objext"; then + pre_test_object_deps_done=yes + continue + fi + + if test no = "$pre_test_object_deps_done"; then + if test -z "$_LT_TAGVAR(predep_objects, $1)"; then + _LT_TAGVAR(predep_objects, $1)=$p + else + _LT_TAGVAR(predep_objects, $1)="$_LT_TAGVAR(predep_objects, $1) $p" + fi + else + if test -z "$_LT_TAGVAR(postdep_objects, $1)"; then + _LT_TAGVAR(postdep_objects, $1)=$p + else + _LT_TAGVAR(postdep_objects, $1)="$_LT_TAGVAR(postdep_objects, $1) $p" + fi + fi + ;; + + *) ;; # Ignore the rest. + + esac + done + + # Clean up. + rm -f a.out a.exe +else + echo "libtool.m4: error: problem compiling $1 test program" +fi + +$RM -f confest.$objext +CFLAGS=$_lt_libdeps_save_CFLAGS + +# PORTME: override above test on systems where it is broken +m4_if([$1], [CXX], +[case $host_os in +interix[[3-9]]*) + # Interix 3.5 installs completely hosed .la files for C++, so rather than + # hack all around it, let's just trust "g++" to DTRT. + _LT_TAGVAR(predep_objects,$1)= + _LT_TAGVAR(postdep_objects,$1)= + _LT_TAGVAR(postdeps,$1)= + ;; +esac +]) + +case " $_LT_TAGVAR(postdeps, $1) " in +*" -lc "*) _LT_TAGVAR(archive_cmds_need_lc, $1)=no ;; +esac + _LT_TAGVAR(compiler_lib_search_dirs, $1)= +if test -n "${_LT_TAGVAR(compiler_lib_search_path, $1)}"; then + _LT_TAGVAR(compiler_lib_search_dirs, $1)=`echo " ${_LT_TAGVAR(compiler_lib_search_path, $1)}" | $SED -e 's! -L! !g' -e 's!^ !!'` +fi +_LT_TAGDECL([], [compiler_lib_search_dirs], [1], + [The directories searched by this compiler when creating a shared library]) +_LT_TAGDECL([], [predep_objects], [1], + [Dependencies to place before and after the objects being linked to + create a shared library]) +_LT_TAGDECL([], [postdep_objects], [1]) +_LT_TAGDECL([], [predeps], [1]) +_LT_TAGDECL([], [postdeps], [1]) +_LT_TAGDECL([], [compiler_lib_search_path], [1], + [The library search path used internally by the compiler when linking + a shared library]) +])# _LT_SYS_HIDDEN_LIBDEPS + + +# _LT_LANG_F77_CONFIG([TAG]) +# -------------------------- +# Ensure that the configuration variables for a Fortran 77 compiler are +# suitably defined. These variables are subsequently used by _LT_CONFIG +# to write the compiler configuration to 'libtool'. +m4_defun([_LT_LANG_F77_CONFIG], +[AC_LANG_PUSH(Fortran 77) +if test -z "$F77" || test no = "$F77"; then + _lt_disable_F77=yes +fi + +_LT_TAGVAR(archive_cmds_need_lc, $1)=no +_LT_TAGVAR(allow_undefined_flag, $1)= +_LT_TAGVAR(always_export_symbols, $1)=no +_LT_TAGVAR(archive_expsym_cmds, $1)= +_LT_TAGVAR(export_dynamic_flag_spec, $1)= +_LT_TAGVAR(hardcode_direct, $1)=no +_LT_TAGVAR(hardcode_direct_absolute, $1)=no +_LT_TAGVAR(hardcode_libdir_flag_spec, $1)= +_LT_TAGVAR(hardcode_libdir_separator, $1)= +_LT_TAGVAR(hardcode_minus_L, $1)=no +_LT_TAGVAR(hardcode_automatic, $1)=no +_LT_TAGVAR(inherit_rpath, $1)=no +_LT_TAGVAR(module_cmds, $1)= +_LT_TAGVAR(module_expsym_cmds, $1)= +_LT_TAGVAR(link_all_deplibs, $1)=unknown +_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds +_LT_TAGVAR(reload_flag, $1)=$reload_flag +_LT_TAGVAR(reload_cmds, $1)=$reload_cmds +_LT_TAGVAR(no_undefined_flag, $1)= +_LT_TAGVAR(whole_archive_flag_spec, $1)= +_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no + +# Source file extension for f77 test sources. +ac_ext=f + +# Object file extension for compiled f77 test sources. +objext=o +_LT_TAGVAR(objext, $1)=$objext + +# No sense in running all these tests if we already determined that +# the F77 compiler isn't working. Some variables (like enable_shared) +# are currently assumed to apply to all compilers on this platform, +# and will be corrupted by setting them based on a non-working compiler. +if test yes != "$_lt_disable_F77"; then + # Code to be used in simple compile tests + lt_simple_compile_test_code="\ + subroutine t + return + end +" + + # Code to be used in simple link tests + lt_simple_link_test_code="\ + program t + end +" + + # ltmain only uses $CC for tagged configurations so make sure $CC is set. + _LT_TAG_COMPILER + + # save warnings/boilerplate of simple test code + _LT_COMPILER_BOILERPLATE + _LT_LINKER_BOILERPLATE + + # Allow CC to be a program name with arguments. + lt_save_CC=$CC + lt_save_GCC=$GCC + lt_save_CFLAGS=$CFLAGS + CC=${F77-"f77"} + CFLAGS=$FFLAGS + compiler=$CC + _LT_TAGVAR(compiler, $1)=$CC + _LT_CC_BASENAME([$compiler]) + GCC=$G77 + if test -n "$compiler"; then + AC_MSG_CHECKING([if libtool supports shared libraries]) + AC_MSG_RESULT([$can_build_shared]) + + AC_MSG_CHECKING([whether to build shared libraries]) + test no = "$can_build_shared" && enable_shared=no + + # On AIX, shared libraries and static libraries use the same namespace, and + # are all built from PIC. + case $host_os in + aix3*) + test yes = "$enable_shared" && enable_static=no + if test -n "$RANLIB"; then + archive_cmds="$archive_cmds~\$RANLIB \$lib" + postinstall_cmds='$RANLIB $lib' + fi + ;; + aix[[4-9]]*) + if test ia64 != "$host_cpu"; then + case $enable_shared,$with_aix_soname,$aix_use_runtimelinking in + yes,aix,yes) ;; # shared object as lib.so file only + yes,svr4,*) ;; # shared object as lib.so archive member only + yes,*) enable_static=no ;; # shared object in lib.a archive as well + esac + fi + ;; + esac + AC_MSG_RESULT([$enable_shared]) + + AC_MSG_CHECKING([whether to build static libraries]) + # Make sure either enable_shared or enable_static is yes. + test yes = "$enable_shared" || enable_static=yes + AC_MSG_RESULT([$enable_static]) + + _LT_TAGVAR(GCC, $1)=$G77 + _LT_TAGVAR(LD, $1)=$LD + + ## CAVEAT EMPTOR: + ## There is no encapsulation within the following macros, do not change + ## the running order or otherwise move them around unless you know exactly + ## what you are doing... + _LT_COMPILER_PIC($1) + _LT_COMPILER_C_O($1) + _LT_COMPILER_FILE_LOCKS($1) + _LT_LINKER_SHLIBS($1) + _LT_SYS_DYNAMIC_LINKER($1) + _LT_LINKER_HARDCODE_LIBPATH($1) + + _LT_CONFIG($1) + fi # test -n "$compiler" + + GCC=$lt_save_GCC + CC=$lt_save_CC + CFLAGS=$lt_save_CFLAGS +fi # test yes != "$_lt_disable_F77" + +AC_LANG_POP +])# _LT_LANG_F77_CONFIG + + +# _LT_LANG_FC_CONFIG([TAG]) +# ------------------------- +# Ensure that the configuration variables for a Fortran compiler are +# suitably defined. These variables are subsequently used by _LT_CONFIG +# to write the compiler configuration to 'libtool'. +m4_defun([_LT_LANG_FC_CONFIG], +[AC_LANG_PUSH(Fortran) + +if test -z "$FC" || test no = "$FC"; then + _lt_disable_FC=yes +fi + +_LT_TAGVAR(archive_cmds_need_lc, $1)=no +_LT_TAGVAR(allow_undefined_flag, $1)= +_LT_TAGVAR(always_export_symbols, $1)=no +_LT_TAGVAR(archive_expsym_cmds, $1)= +_LT_TAGVAR(export_dynamic_flag_spec, $1)= +_LT_TAGVAR(hardcode_direct, $1)=no +_LT_TAGVAR(hardcode_direct_absolute, $1)=no +_LT_TAGVAR(hardcode_libdir_flag_spec, $1)= +_LT_TAGVAR(hardcode_libdir_separator, $1)= +_LT_TAGVAR(hardcode_minus_L, $1)=no +_LT_TAGVAR(hardcode_automatic, $1)=no +_LT_TAGVAR(inherit_rpath, $1)=no +_LT_TAGVAR(module_cmds, $1)= +_LT_TAGVAR(module_expsym_cmds, $1)= +_LT_TAGVAR(link_all_deplibs, $1)=unknown +_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds +_LT_TAGVAR(reload_flag, $1)=$reload_flag +_LT_TAGVAR(reload_cmds, $1)=$reload_cmds +_LT_TAGVAR(no_undefined_flag, $1)= +_LT_TAGVAR(whole_archive_flag_spec, $1)= +_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no + +# Source file extension for fc test sources. +ac_ext=${ac_fc_srcext-f} + +# Object file extension for compiled fc test sources. +objext=o +_LT_TAGVAR(objext, $1)=$objext + +# No sense in running all these tests if we already determined that +# the FC compiler isn't working. Some variables (like enable_shared) +# are currently assumed to apply to all compilers on this platform, +# and will be corrupted by setting them based on a non-working compiler. +if test yes != "$_lt_disable_FC"; then + # Code to be used in simple compile tests + lt_simple_compile_test_code="\ + subroutine t + return + end +" + + # Code to be used in simple link tests + lt_simple_link_test_code="\ + program t + end +" + + # ltmain only uses $CC for tagged configurations so make sure $CC is set. + _LT_TAG_COMPILER + + # save warnings/boilerplate of simple test code + _LT_COMPILER_BOILERPLATE + _LT_LINKER_BOILERPLATE + + # Allow CC to be a program name with arguments. + lt_save_CC=$CC + lt_save_GCC=$GCC + lt_save_CFLAGS=$CFLAGS + CC=${FC-"f95"} + CFLAGS=$FCFLAGS + compiler=$CC + GCC=$ac_cv_fc_compiler_gnu + + _LT_TAGVAR(compiler, $1)=$CC + _LT_CC_BASENAME([$compiler]) + + if test -n "$compiler"; then + AC_MSG_CHECKING([if libtool supports shared libraries]) + AC_MSG_RESULT([$can_build_shared]) + + AC_MSG_CHECKING([whether to build shared libraries]) + test no = "$can_build_shared" && enable_shared=no + + # On AIX, shared libraries and static libraries use the same namespace, and + # are all built from PIC. + case $host_os in + aix3*) + test yes = "$enable_shared" && enable_static=no + if test -n "$RANLIB"; then + archive_cmds="$archive_cmds~\$RANLIB \$lib" + postinstall_cmds='$RANLIB $lib' + fi + ;; + aix[[4-9]]*) + if test ia64 != "$host_cpu"; then + case $enable_shared,$with_aix_soname,$aix_use_runtimelinking in + yes,aix,yes) ;; # shared object as lib.so file only + yes,svr4,*) ;; # shared object as lib.so archive member only + yes,*) enable_static=no ;; # shared object in lib.a archive as well + esac + fi + ;; + esac + AC_MSG_RESULT([$enable_shared]) + + AC_MSG_CHECKING([whether to build static libraries]) + # Make sure either enable_shared or enable_static is yes. + test yes = "$enable_shared" || enable_static=yes + AC_MSG_RESULT([$enable_static]) + + _LT_TAGVAR(GCC, $1)=$ac_cv_fc_compiler_gnu + _LT_TAGVAR(LD, $1)=$LD + + ## CAVEAT EMPTOR: + ## There is no encapsulation within the following macros, do not change + ## the running order or otherwise move them around unless you know exactly + ## what you are doing... + _LT_SYS_HIDDEN_LIBDEPS($1) + _LT_COMPILER_PIC($1) + _LT_COMPILER_C_O($1) + _LT_COMPILER_FILE_LOCKS($1) + _LT_LINKER_SHLIBS($1) + _LT_SYS_DYNAMIC_LINKER($1) + _LT_LINKER_HARDCODE_LIBPATH($1) + + _LT_CONFIG($1) + fi # test -n "$compiler" + + GCC=$lt_save_GCC + CC=$lt_save_CC + CFLAGS=$lt_save_CFLAGS +fi # test yes != "$_lt_disable_FC" + +AC_LANG_POP +])# _LT_LANG_FC_CONFIG + + +# _LT_LANG_GCJ_CONFIG([TAG]) +# -------------------------- +# Ensure that the configuration variables for the GNU Java Compiler compiler +# are suitably defined. These variables are subsequently used by _LT_CONFIG +# to write the compiler configuration to 'libtool'. +m4_defun([_LT_LANG_GCJ_CONFIG], +[AC_REQUIRE([LT_PROG_GCJ])dnl +AC_LANG_SAVE + +# Source file extension for Java test sources. +ac_ext=java + +# Object file extension for compiled Java test sources. +objext=o +_LT_TAGVAR(objext, $1)=$objext + +# Code to be used in simple compile tests +lt_simple_compile_test_code="class foo {}" + +# Code to be used in simple link tests +lt_simple_link_test_code='public class conftest { public static void main(String[[]] argv) {}; }' + +# ltmain only uses $CC for tagged configurations so make sure $CC is set. +_LT_TAG_COMPILER + +# save warnings/boilerplate of simple test code +_LT_COMPILER_BOILERPLATE +_LT_LINKER_BOILERPLATE + +# Allow CC to be a program name with arguments. +lt_save_CC=$CC +lt_save_CFLAGS=$CFLAGS +lt_save_GCC=$GCC +GCC=yes +CC=${GCJ-"gcj"} +CFLAGS=$GCJFLAGS +compiler=$CC +_LT_TAGVAR(compiler, $1)=$CC +_LT_TAGVAR(LD, $1)=$LD +_LT_CC_BASENAME([$compiler]) + +# GCJ did not exist at the time GCC didn't implicitly link libc in. +_LT_TAGVAR(archive_cmds_need_lc, $1)=no + +_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds +_LT_TAGVAR(reload_flag, $1)=$reload_flag +_LT_TAGVAR(reload_cmds, $1)=$reload_cmds + +## CAVEAT EMPTOR: +## There is no encapsulation within the following macros, do not change +## the running order or otherwise move them around unless you know exactly +## what you are doing... +if test -n "$compiler"; then + _LT_COMPILER_NO_RTTI($1) + _LT_COMPILER_PIC($1) + _LT_COMPILER_C_O($1) + _LT_COMPILER_FILE_LOCKS($1) + _LT_LINKER_SHLIBS($1) + _LT_LINKER_HARDCODE_LIBPATH($1) + + _LT_CONFIG($1) +fi + +AC_LANG_RESTORE + +GCC=$lt_save_GCC +CC=$lt_save_CC +CFLAGS=$lt_save_CFLAGS +])# _LT_LANG_GCJ_CONFIG + + +# _LT_LANG_GO_CONFIG([TAG]) +# -------------------------- +# Ensure that the configuration variables for the GNU Go compiler +# are suitably defined. These variables are subsequently used by _LT_CONFIG +# to write the compiler configuration to 'libtool'. +m4_defun([_LT_LANG_GO_CONFIG], +[AC_REQUIRE([LT_PROG_GO])dnl +AC_LANG_SAVE + +# Source file extension for Go test sources. +ac_ext=go + +# Object file extension for compiled Go test sources. +objext=o +_LT_TAGVAR(objext, $1)=$objext + +# Code to be used in simple compile tests +lt_simple_compile_test_code="package main; func main() { }" + +# Code to be used in simple link tests +lt_simple_link_test_code='package main; func main() { }' + +# ltmain only uses $CC for tagged configurations so make sure $CC is set. +_LT_TAG_COMPILER + +# save warnings/boilerplate of simple test code +_LT_COMPILER_BOILERPLATE +_LT_LINKER_BOILERPLATE + +# Allow CC to be a program name with arguments. +lt_save_CC=$CC +lt_save_CFLAGS=$CFLAGS +lt_save_GCC=$GCC +GCC=yes +CC=${GOC-"gccgo"} +CFLAGS=$GOFLAGS +compiler=$CC +_LT_TAGVAR(compiler, $1)=$CC +_LT_TAGVAR(LD, $1)=$LD +_LT_CC_BASENAME([$compiler]) + +# Go did not exist at the time GCC didn't implicitly link libc in. +_LT_TAGVAR(archive_cmds_need_lc, $1)=no + +_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds +_LT_TAGVAR(reload_flag, $1)=$reload_flag +_LT_TAGVAR(reload_cmds, $1)=$reload_cmds + +## CAVEAT EMPTOR: +## There is no encapsulation within the following macros, do not change +## the running order or otherwise move them around unless you know exactly +## what you are doing... +if test -n "$compiler"; then + _LT_COMPILER_NO_RTTI($1) + _LT_COMPILER_PIC($1) + _LT_COMPILER_C_O($1) + _LT_COMPILER_FILE_LOCKS($1) + _LT_LINKER_SHLIBS($1) + _LT_LINKER_HARDCODE_LIBPATH($1) + + _LT_CONFIG($1) +fi + +AC_LANG_RESTORE + +GCC=$lt_save_GCC +CC=$lt_save_CC +CFLAGS=$lt_save_CFLAGS +])# _LT_LANG_GO_CONFIG + + +# _LT_LANG_RC_CONFIG([TAG]) +# ------------------------- +# Ensure that the configuration variables for the Windows resource compiler +# are suitably defined. These variables are subsequently used by _LT_CONFIG +# to write the compiler configuration to 'libtool'. +m4_defun([_LT_LANG_RC_CONFIG], +[AC_REQUIRE([LT_PROG_RC])dnl +AC_LANG_SAVE + +# Source file extension for RC test sources. +ac_ext=rc + +# Object file extension for compiled RC test sources. +objext=o +_LT_TAGVAR(objext, $1)=$objext + +# Code to be used in simple compile tests +lt_simple_compile_test_code='sample MENU { MENUITEM "&Soup", 100, CHECKED }' + +# Code to be used in simple link tests +lt_simple_link_test_code=$lt_simple_compile_test_code + +# ltmain only uses $CC for tagged configurations so make sure $CC is set. +_LT_TAG_COMPILER + +# save warnings/boilerplate of simple test code +_LT_COMPILER_BOILERPLATE +_LT_LINKER_BOILERPLATE + +# Allow CC to be a program name with arguments. +lt_save_CC=$CC +lt_save_CFLAGS=$CFLAGS +lt_save_GCC=$GCC +GCC= +CC=${RC-"windres"} +CFLAGS= +compiler=$CC +_LT_TAGVAR(compiler, $1)=$CC +_LT_CC_BASENAME([$compiler]) +_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes + +if test -n "$compiler"; then + : + _LT_CONFIG($1) +fi + +GCC=$lt_save_GCC +AC_LANG_RESTORE +CC=$lt_save_CC +CFLAGS=$lt_save_CFLAGS +])# _LT_LANG_RC_CONFIG + + +# LT_PROG_GCJ +# ----------- +AC_DEFUN([LT_PROG_GCJ], +[m4_ifdef([AC_PROG_GCJ], [AC_PROG_GCJ], + [m4_ifdef([A][M_PROG_GCJ], [A][M_PROG_GCJ], + [AC_CHECK_TOOL(GCJ, gcj,) + test set = "${GCJFLAGS+set}" || GCJFLAGS="-g -O2" + AC_SUBST(GCJFLAGS)])])[]dnl +]) + +# Old name: +AU_ALIAS([LT_AC_PROG_GCJ], [LT_PROG_GCJ]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([LT_AC_PROG_GCJ], []) + + +# LT_PROG_GO +# ---------- +AC_DEFUN([LT_PROG_GO], +[AC_CHECK_TOOL(GOC, gccgo,) +]) + + +# LT_PROG_RC +# ---------- +AC_DEFUN([LT_PROG_RC], +[AC_CHECK_TOOL(RC, windres,) +]) + +# Old name: +AU_ALIAS([LT_AC_PROG_RC], [LT_PROG_RC]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([LT_AC_PROG_RC], []) + + +# _LT_DECL_EGREP +# -------------- +# If we don't have a new enough Autoconf to choose the best grep +# available, choose the one first in the user's PATH. +m4_defun([_LT_DECL_EGREP], +[AC_REQUIRE([AC_PROG_EGREP])dnl +AC_REQUIRE([AC_PROG_FGREP])dnl +test -z "$GREP" && GREP=grep +_LT_DECL([], [GREP], [1], [A grep program that handles long lines]) +_LT_DECL([], [EGREP], [1], [An ERE matcher]) +_LT_DECL([], [FGREP], [1], [A literal string matcher]) +dnl Non-bleeding-edge autoconf doesn't subst GREP, so do it here too +AC_SUBST([GREP]) +]) + + +# _LT_DECL_OBJDUMP +# -------------- +# If we don't have a new enough Autoconf to choose the best objdump +# available, choose the one first in the user's PATH. +m4_defun([_LT_DECL_OBJDUMP], +[AC_CHECK_TOOL(OBJDUMP, objdump, false) +test -z "$OBJDUMP" && OBJDUMP=objdump +_LT_DECL([], [OBJDUMP], [1], [An object symbol dumper]) +AC_SUBST([OBJDUMP]) +]) + +# _LT_DECL_DLLTOOL +# ---------------- +# Ensure DLLTOOL variable is set. +m4_defun([_LT_DECL_DLLTOOL], +[AC_CHECK_TOOL(DLLTOOL, dlltool, false) +test -z "$DLLTOOL" && DLLTOOL=dlltool +_LT_DECL([], [DLLTOOL], [1], [DLL creation program]) +AC_SUBST([DLLTOOL]) +]) + +# _LT_DECL_SED +# ------------ +# Check for a fully-functional sed program, that truncates +# as few characters as possible. Prefer GNU sed if found. +m4_defun([_LT_DECL_SED], +[AC_PROG_SED +test -z "$SED" && SED=sed +Xsed="$SED -e 1s/^X//" +_LT_DECL([], [SED], [1], [A sed program that does not truncate output]) +_LT_DECL([], [Xsed], ["\$SED -e 1s/^X//"], + [Sed that helps us avoid accidentally triggering echo(1) options like -n]) +])# _LT_DECL_SED + +m4_ifndef([AC_PROG_SED], [ +############################################################ +# NOTE: This macro has been submitted for inclusion into # +# GNU Autoconf as AC_PROG_SED. When it is available in # +# a released version of Autoconf we should remove this # +# macro and use it instead. # +############################################################ + +m4_defun([AC_PROG_SED], +[AC_MSG_CHECKING([for a sed that does not truncate output]) +AC_CACHE_VAL(lt_cv_path_SED, +[# Loop through the user's path and test for sed and gsed. +# Then use that list of sed's as ones to test for truncation. +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for lt_ac_prog in sed gsed; do + for ac_exec_ext in '' $ac_executable_extensions; do + if $as_executable_p "$as_dir/$lt_ac_prog$ac_exec_ext"; then + lt_ac_sed_list="$lt_ac_sed_list $as_dir/$lt_ac_prog$ac_exec_ext" + fi + done + done +done +IFS=$as_save_IFS +lt_ac_max=0 +lt_ac_count=0 +# Add /usr/xpg4/bin/sed as it is typically found on Solaris +# along with /bin/sed that truncates output. +for lt_ac_sed in $lt_ac_sed_list /usr/xpg4/bin/sed; do + test ! -f "$lt_ac_sed" && continue + cat /dev/null > conftest.in + lt_ac_count=0 + echo $ECHO_N "0123456789$ECHO_C" >conftest.in + # Check for GNU sed and select it if it is found. + if "$lt_ac_sed" --version 2>&1 < /dev/null | grep 'GNU' > /dev/null; then + lt_cv_path_SED=$lt_ac_sed + break + fi + while true; do + cat conftest.in conftest.in >conftest.tmp + mv conftest.tmp conftest.in + cp conftest.in conftest.nl + echo >>conftest.nl + $lt_ac_sed -e 's/a$//' < conftest.nl >conftest.out || break + cmp -s conftest.out conftest.nl || break + # 10000 chars as input seems more than enough + test 10 -lt "$lt_ac_count" && break + lt_ac_count=`expr $lt_ac_count + 1` + if test "$lt_ac_count" -gt "$lt_ac_max"; then + lt_ac_max=$lt_ac_count + lt_cv_path_SED=$lt_ac_sed + fi + done +done +]) +SED=$lt_cv_path_SED +AC_SUBST([SED]) +AC_MSG_RESULT([$SED]) +])#AC_PROG_SED +])#m4_ifndef + +# Old name: +AU_ALIAS([LT_AC_PROG_SED], [AC_PROG_SED]) +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([LT_AC_PROG_SED], []) + + +# _LT_CHECK_SHELL_FEATURES +# ------------------------ +# Find out whether the shell is Bourne or XSI compatible, +# or has some other useful features. +m4_defun([_LT_CHECK_SHELL_FEATURES], +[if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then + lt_unset=unset +else + lt_unset=false +fi +_LT_DECL([], [lt_unset], [0], [whether the shell understands "unset"])dnl + +# test EBCDIC or ASCII +case `echo X|tr X '\101'` in + A) # ASCII based system + # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr + lt_SP2NL='tr \040 \012' + lt_NL2SP='tr \015\012 \040\040' + ;; + *) # EBCDIC based system + lt_SP2NL='tr \100 \n' + lt_NL2SP='tr \r\n \100\100' + ;; +esac +_LT_DECL([SP2NL], [lt_SP2NL], [1], [turn spaces into newlines])dnl +_LT_DECL([NL2SP], [lt_NL2SP], [1], [turn newlines into spaces])dnl +])# _LT_CHECK_SHELL_FEATURES + + +# _LT_PATH_CONVERSION_FUNCTIONS +# ----------------------------- +# Determine what file name conversion functions should be used by +# func_to_host_file (and, implicitly, by func_to_host_path). These are needed +# for certain cross-compile configurations and native mingw. +m4_defun([_LT_PATH_CONVERSION_FUNCTIONS], +[AC_REQUIRE([AC_CANONICAL_HOST])dnl +AC_REQUIRE([AC_CANONICAL_BUILD])dnl +AC_MSG_CHECKING([how to convert $build file names to $host format]) +AC_CACHE_VAL(lt_cv_to_host_file_cmd, +[case $host in + *-*-mingw* ) + case $build in + *-*-mingw* ) # actually msys + lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32 + ;; + *-*-cygwin* ) + lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32 + ;; + * ) # otherwise, assume *nix + lt_cv_to_host_file_cmd=func_convert_file_nix_to_w32 + ;; + esac + ;; + *-*-cygwin* ) + case $build in + *-*-mingw* ) # actually msys + lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin + ;; + *-*-cygwin* ) + lt_cv_to_host_file_cmd=func_convert_file_noop + ;; + * ) # otherwise, assume *nix + lt_cv_to_host_file_cmd=func_convert_file_nix_to_cygwin + ;; + esac + ;; + * ) # unhandled hosts (and "normal" native builds) + lt_cv_to_host_file_cmd=func_convert_file_noop + ;; +esac +]) +to_host_file_cmd=$lt_cv_to_host_file_cmd +AC_MSG_RESULT([$lt_cv_to_host_file_cmd]) +_LT_DECL([to_host_file_cmd], [lt_cv_to_host_file_cmd], + [0], [convert $build file names to $host format])dnl + +AC_MSG_CHECKING([how to convert $build file names to toolchain format]) +AC_CACHE_VAL(lt_cv_to_tool_file_cmd, +[#assume ordinary cross tools, or native build. +lt_cv_to_tool_file_cmd=func_convert_file_noop +case $host in + *-*-mingw* ) + case $build in + *-*-mingw* ) # actually msys + lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32 + ;; + esac + ;; +esac +]) +to_tool_file_cmd=$lt_cv_to_tool_file_cmd +AC_MSG_RESULT([$lt_cv_to_tool_file_cmd]) +_LT_DECL([to_tool_file_cmd], [lt_cv_to_tool_file_cmd], + [0], [convert $build files to toolchain format])dnl +])# _LT_PATH_CONVERSION_FUNCTIONS diff --git a/m4/ltoptions.m4 b/m4/ltoptions.m4 new file mode 100644 index 0000000..94b0829 --- /dev/null +++ b/m4/ltoptions.m4 @@ -0,0 +1,437 @@ +# Helper functions for option handling. -*- Autoconf -*- +# +# Copyright (C) 2004-2005, 2007-2009, 2011-2015 Free Software +# Foundation, Inc. +# Written by Gary V. Vaughan, 2004 +# +# This file is free software; the Free Software Foundation gives +# unlimited permission to copy and/or distribute it, with or without +# modifications, as long as this notice is preserved. + +# serial 8 ltoptions.m4 + +# This is to help aclocal find these macros, as it can't see m4_define. +AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])]) + + +# _LT_MANGLE_OPTION(MACRO-NAME, OPTION-NAME) +# ------------------------------------------ +m4_define([_LT_MANGLE_OPTION], +[[_LT_OPTION_]m4_bpatsubst($1__$2, [[^a-zA-Z0-9_]], [_])]) + + +# _LT_SET_OPTION(MACRO-NAME, OPTION-NAME) +# --------------------------------------- +# Set option OPTION-NAME for macro MACRO-NAME, and if there is a +# matching handler defined, dispatch to it. Other OPTION-NAMEs are +# saved as a flag. +m4_define([_LT_SET_OPTION], +[m4_define(_LT_MANGLE_OPTION([$1], [$2]))dnl +m4_ifdef(_LT_MANGLE_DEFUN([$1], [$2]), + _LT_MANGLE_DEFUN([$1], [$2]), + [m4_warning([Unknown $1 option '$2'])])[]dnl +]) + + +# _LT_IF_OPTION(MACRO-NAME, OPTION-NAME, IF-SET, [IF-NOT-SET]) +# ------------------------------------------------------------ +# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise. +m4_define([_LT_IF_OPTION], +[m4_ifdef(_LT_MANGLE_OPTION([$1], [$2]), [$3], [$4])]) + + +# _LT_UNLESS_OPTIONS(MACRO-NAME, OPTION-LIST, IF-NOT-SET) +# ------------------------------------------------------- +# Execute IF-NOT-SET unless all options in OPTION-LIST for MACRO-NAME +# are set. +m4_define([_LT_UNLESS_OPTIONS], +[m4_foreach([_LT_Option], m4_split(m4_normalize([$2])), + [m4_ifdef(_LT_MANGLE_OPTION([$1], _LT_Option), + [m4_define([$0_found])])])[]dnl +m4_ifdef([$0_found], [m4_undefine([$0_found])], [$3 +])[]dnl +]) + + +# _LT_SET_OPTIONS(MACRO-NAME, OPTION-LIST) +# ---------------------------------------- +# OPTION-LIST is a space-separated list of Libtool options associated +# with MACRO-NAME. If any OPTION has a matching handler declared with +# LT_OPTION_DEFINE, dispatch to that macro; otherwise complain about +# the unknown option and exit. +m4_defun([_LT_SET_OPTIONS], +[# Set options +m4_foreach([_LT_Option], m4_split(m4_normalize([$2])), + [_LT_SET_OPTION([$1], _LT_Option)]) + +m4_if([$1],[LT_INIT],[ + dnl + dnl Simply set some default values (i.e off) if boolean options were not + dnl specified: + _LT_UNLESS_OPTIONS([LT_INIT], [dlopen], [enable_dlopen=no + ]) + _LT_UNLESS_OPTIONS([LT_INIT], [win32-dll], [enable_win32_dll=no + ]) + dnl + dnl If no reference was made to various pairs of opposing options, then + dnl we run the default mode handler for the pair. For example, if neither + dnl 'shared' nor 'disable-shared' was passed, we enable building of shared + dnl archives by default: + _LT_UNLESS_OPTIONS([LT_INIT], [shared disable-shared], [_LT_ENABLE_SHARED]) + _LT_UNLESS_OPTIONS([LT_INIT], [static disable-static], [_LT_ENABLE_STATIC]) + _LT_UNLESS_OPTIONS([LT_INIT], [pic-only no-pic], [_LT_WITH_PIC]) + _LT_UNLESS_OPTIONS([LT_INIT], [fast-install disable-fast-install], + [_LT_ENABLE_FAST_INSTALL]) + _LT_UNLESS_OPTIONS([LT_INIT], [aix-soname=aix aix-soname=both aix-soname=svr4], + [_LT_WITH_AIX_SONAME([aix])]) + ]) +])# _LT_SET_OPTIONS + + +## --------------------------------- ## +## Macros to handle LT_INIT options. ## +## --------------------------------- ## + +# _LT_MANGLE_DEFUN(MACRO-NAME, OPTION-NAME) +# ----------------------------------------- +m4_define([_LT_MANGLE_DEFUN], +[[_LT_OPTION_DEFUN_]m4_bpatsubst(m4_toupper([$1__$2]), [[^A-Z0-9_]], [_])]) + + +# LT_OPTION_DEFINE(MACRO-NAME, OPTION-NAME, CODE) +# ----------------------------------------------- +m4_define([LT_OPTION_DEFINE], +[m4_define(_LT_MANGLE_DEFUN([$1], [$2]), [$3])[]dnl +])# LT_OPTION_DEFINE + + +# dlopen +# ------ +LT_OPTION_DEFINE([LT_INIT], [dlopen], [enable_dlopen=yes +]) + +AU_DEFUN([AC_LIBTOOL_DLOPEN], +[_LT_SET_OPTION([LT_INIT], [dlopen]) +AC_DIAGNOSE([obsolete], +[$0: Remove this warning and the call to _LT_SET_OPTION when you +put the 'dlopen' option into LT_INIT's first parameter.]) +]) + +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_LIBTOOL_DLOPEN], []) + + +# win32-dll +# --------- +# Declare package support for building win32 dll's. +LT_OPTION_DEFINE([LT_INIT], [win32-dll], +[enable_win32_dll=yes + +case $host in +*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*) + AC_CHECK_TOOL(AS, as, false) + AC_CHECK_TOOL(DLLTOOL, dlltool, false) + AC_CHECK_TOOL(OBJDUMP, objdump, false) + ;; +esac + +test -z "$AS" && AS=as +_LT_DECL([], [AS], [1], [Assembler program])dnl + +test -z "$DLLTOOL" && DLLTOOL=dlltool +_LT_DECL([], [DLLTOOL], [1], [DLL creation program])dnl + +test -z "$OBJDUMP" && OBJDUMP=objdump +_LT_DECL([], [OBJDUMP], [1], [Object dumper program])dnl +])# win32-dll + +AU_DEFUN([AC_LIBTOOL_WIN32_DLL], +[AC_REQUIRE([AC_CANONICAL_HOST])dnl +_LT_SET_OPTION([LT_INIT], [win32-dll]) +AC_DIAGNOSE([obsolete], +[$0: Remove this warning and the call to _LT_SET_OPTION when you +put the 'win32-dll' option into LT_INIT's first parameter.]) +]) + +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_LIBTOOL_WIN32_DLL], []) + + +# _LT_ENABLE_SHARED([DEFAULT]) +# ---------------------------- +# implement the --enable-shared flag, and supports the 'shared' and +# 'disable-shared' LT_INIT options. +# DEFAULT is either 'yes' or 'no'. If omitted, it defaults to 'yes'. +m4_define([_LT_ENABLE_SHARED], +[m4_define([_LT_ENABLE_SHARED_DEFAULT], [m4_if($1, no, no, yes)])dnl +AC_ARG_ENABLE([shared], + [AS_HELP_STRING([--enable-shared@<:@=PKGS@:>@], + [build shared libraries @<:@default=]_LT_ENABLE_SHARED_DEFAULT[@:>@])], + [p=${PACKAGE-default} + case $enableval in + yes) enable_shared=yes ;; + no) enable_shared=no ;; + *) + enable_shared=no + # Look at the argument we got. We use all the common list separators. + lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, + for pkg in $enableval; do + IFS=$lt_save_ifs + if test "X$pkg" = "X$p"; then + enable_shared=yes + fi + done + IFS=$lt_save_ifs + ;; + esac], + [enable_shared=]_LT_ENABLE_SHARED_DEFAULT) + + _LT_DECL([build_libtool_libs], [enable_shared], [0], + [Whether or not to build shared libraries]) +])# _LT_ENABLE_SHARED + +LT_OPTION_DEFINE([LT_INIT], [shared], [_LT_ENABLE_SHARED([yes])]) +LT_OPTION_DEFINE([LT_INIT], [disable-shared], [_LT_ENABLE_SHARED([no])]) + +# Old names: +AC_DEFUN([AC_ENABLE_SHARED], +[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[shared]) +]) + +AC_DEFUN([AC_DISABLE_SHARED], +[_LT_SET_OPTION([LT_INIT], [disable-shared]) +]) + +AU_DEFUN([AM_ENABLE_SHARED], [AC_ENABLE_SHARED($@)]) +AU_DEFUN([AM_DISABLE_SHARED], [AC_DISABLE_SHARED($@)]) + +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AM_ENABLE_SHARED], []) +dnl AC_DEFUN([AM_DISABLE_SHARED], []) + + + +# _LT_ENABLE_STATIC([DEFAULT]) +# ---------------------------- +# implement the --enable-static flag, and support the 'static' and +# 'disable-static' LT_INIT options. +# DEFAULT is either 'yes' or 'no'. If omitted, it defaults to 'yes'. +m4_define([_LT_ENABLE_STATIC], +[m4_define([_LT_ENABLE_STATIC_DEFAULT], [m4_if($1, no, no, yes)])dnl +AC_ARG_ENABLE([static], + [AS_HELP_STRING([--enable-static@<:@=PKGS@:>@], + [build static libraries @<:@default=]_LT_ENABLE_STATIC_DEFAULT[@:>@])], + [p=${PACKAGE-default} + case $enableval in + yes) enable_static=yes ;; + no) enable_static=no ;; + *) + enable_static=no + # Look at the argument we got. We use all the common list separators. + lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, + for pkg in $enableval; do + IFS=$lt_save_ifs + if test "X$pkg" = "X$p"; then + enable_static=yes + fi + done + IFS=$lt_save_ifs + ;; + esac], + [enable_static=]_LT_ENABLE_STATIC_DEFAULT) + + _LT_DECL([build_old_libs], [enable_static], [0], + [Whether or not to build static libraries]) +])# _LT_ENABLE_STATIC + +LT_OPTION_DEFINE([LT_INIT], [static], [_LT_ENABLE_STATIC([yes])]) +LT_OPTION_DEFINE([LT_INIT], [disable-static], [_LT_ENABLE_STATIC([no])]) + +# Old names: +AC_DEFUN([AC_ENABLE_STATIC], +[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[static]) +]) + +AC_DEFUN([AC_DISABLE_STATIC], +[_LT_SET_OPTION([LT_INIT], [disable-static]) +]) + +AU_DEFUN([AM_ENABLE_STATIC], [AC_ENABLE_STATIC($@)]) +AU_DEFUN([AM_DISABLE_STATIC], [AC_DISABLE_STATIC($@)]) + +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AM_ENABLE_STATIC], []) +dnl AC_DEFUN([AM_DISABLE_STATIC], []) + + + +# _LT_ENABLE_FAST_INSTALL([DEFAULT]) +# ---------------------------------- +# implement the --enable-fast-install flag, and support the 'fast-install' +# and 'disable-fast-install' LT_INIT options. +# DEFAULT is either 'yes' or 'no'. If omitted, it defaults to 'yes'. +m4_define([_LT_ENABLE_FAST_INSTALL], +[m4_define([_LT_ENABLE_FAST_INSTALL_DEFAULT], [m4_if($1, no, no, yes)])dnl +AC_ARG_ENABLE([fast-install], + [AS_HELP_STRING([--enable-fast-install@<:@=PKGS@:>@], + [optimize for fast installation @<:@default=]_LT_ENABLE_FAST_INSTALL_DEFAULT[@:>@])], + [p=${PACKAGE-default} + case $enableval in + yes) enable_fast_install=yes ;; + no) enable_fast_install=no ;; + *) + enable_fast_install=no + # Look at the argument we got. We use all the common list separators. + lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, + for pkg in $enableval; do + IFS=$lt_save_ifs + if test "X$pkg" = "X$p"; then + enable_fast_install=yes + fi + done + IFS=$lt_save_ifs + ;; + esac], + [enable_fast_install=]_LT_ENABLE_FAST_INSTALL_DEFAULT) + +_LT_DECL([fast_install], [enable_fast_install], [0], + [Whether or not to optimize for fast installation])dnl +])# _LT_ENABLE_FAST_INSTALL + +LT_OPTION_DEFINE([LT_INIT], [fast-install], [_LT_ENABLE_FAST_INSTALL([yes])]) +LT_OPTION_DEFINE([LT_INIT], [disable-fast-install], [_LT_ENABLE_FAST_INSTALL([no])]) + +# Old names: +AU_DEFUN([AC_ENABLE_FAST_INSTALL], +[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[fast-install]) +AC_DIAGNOSE([obsolete], +[$0: Remove this warning and the call to _LT_SET_OPTION when you put +the 'fast-install' option into LT_INIT's first parameter.]) +]) + +AU_DEFUN([AC_DISABLE_FAST_INSTALL], +[_LT_SET_OPTION([LT_INIT], [disable-fast-install]) +AC_DIAGNOSE([obsolete], +[$0: Remove this warning and the call to _LT_SET_OPTION when you put +the 'disable-fast-install' option into LT_INIT's first parameter.]) +]) + +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_ENABLE_FAST_INSTALL], []) +dnl AC_DEFUN([AM_DISABLE_FAST_INSTALL], []) + + +# _LT_WITH_AIX_SONAME([DEFAULT]) +# ---------------------------------- +# implement the --with-aix-soname flag, and support the `aix-soname=aix' +# and `aix-soname=both' and `aix-soname=svr4' LT_INIT options. DEFAULT +# is either `aix', `both' or `svr4'. If omitted, it defaults to `aix'. +m4_define([_LT_WITH_AIX_SONAME], +[m4_define([_LT_WITH_AIX_SONAME_DEFAULT], [m4_if($1, svr4, svr4, m4_if($1, both, both, aix))])dnl +shared_archive_member_spec= +case $host,$enable_shared in +power*-*-aix[[5-9]]*,yes) + AC_MSG_CHECKING([which variant of shared library versioning to provide]) + AC_ARG_WITH([aix-soname], + [AS_HELP_STRING([--with-aix-soname=aix|svr4|both], + [shared library versioning (aka "SONAME") variant to provide on AIX, @<:@default=]_LT_WITH_AIX_SONAME_DEFAULT[@:>@.])], + [case $withval in + aix|svr4|both) + ;; + *) + AC_MSG_ERROR([Unknown argument to --with-aix-soname]) + ;; + esac + lt_cv_with_aix_soname=$with_aix_soname], + [AC_CACHE_VAL([lt_cv_with_aix_soname], + [lt_cv_with_aix_soname=]_LT_WITH_AIX_SONAME_DEFAULT) + with_aix_soname=$lt_cv_with_aix_soname]) + AC_MSG_RESULT([$with_aix_soname]) + if test aix != "$with_aix_soname"; then + # For the AIX way of multilib, we name the shared archive member + # based on the bitwidth used, traditionally 'shr.o' or 'shr_64.o', + # and 'shr.imp' or 'shr_64.imp', respectively, for the Import File. + # Even when GNU compilers ignore OBJECT_MODE but need '-maix64' flag, + # the AIX toolchain works better with OBJECT_MODE set (default 32). + if test 64 = "${OBJECT_MODE-32}"; then + shared_archive_member_spec=shr_64 + else + shared_archive_member_spec=shr + fi + fi + ;; +*) + with_aix_soname=aix + ;; +esac + +_LT_DECL([], [shared_archive_member_spec], [0], + [Shared archive member basename, for filename based shared library versioning on AIX])dnl +])# _LT_WITH_AIX_SONAME + +LT_OPTION_DEFINE([LT_INIT], [aix-soname=aix], [_LT_WITH_AIX_SONAME([aix])]) +LT_OPTION_DEFINE([LT_INIT], [aix-soname=both], [_LT_WITH_AIX_SONAME([both])]) +LT_OPTION_DEFINE([LT_INIT], [aix-soname=svr4], [_LT_WITH_AIX_SONAME([svr4])]) + + +# _LT_WITH_PIC([MODE]) +# -------------------- +# implement the --with-pic flag, and support the 'pic-only' and 'no-pic' +# LT_INIT options. +# MODE is either 'yes' or 'no'. If omitted, it defaults to 'both'. +m4_define([_LT_WITH_PIC], +[AC_ARG_WITH([pic], + [AS_HELP_STRING([--with-pic@<:@=PKGS@:>@], + [try to use only PIC/non-PIC objects @<:@default=use both@:>@])], + [lt_p=${PACKAGE-default} + case $withval in + yes|no) pic_mode=$withval ;; + *) + pic_mode=default + # Look at the argument we got. We use all the common list separators. + lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR, + for lt_pkg in $withval; do + IFS=$lt_save_ifs + if test "X$lt_pkg" = "X$lt_p"; then + pic_mode=yes + fi + done + IFS=$lt_save_ifs + ;; + esac], + [pic_mode=m4_default([$1], [default])]) + +_LT_DECL([], [pic_mode], [0], [What type of objects to build])dnl +])# _LT_WITH_PIC + +LT_OPTION_DEFINE([LT_INIT], [pic-only], [_LT_WITH_PIC([yes])]) +LT_OPTION_DEFINE([LT_INIT], [no-pic], [_LT_WITH_PIC([no])]) + +# Old name: +AU_DEFUN([AC_LIBTOOL_PICMODE], +[_LT_SET_OPTION([LT_INIT], [pic-only]) +AC_DIAGNOSE([obsolete], +[$0: Remove this warning and the call to _LT_SET_OPTION when you +put the 'pic-only' option into LT_INIT's first parameter.]) +]) + +dnl aclocal-1.4 backwards compatibility: +dnl AC_DEFUN([AC_LIBTOOL_PICMODE], []) + +## ----------------- ## +## LTDL_INIT Options ## +## ----------------- ## + +m4_define([_LTDL_MODE], []) +LT_OPTION_DEFINE([LTDL_INIT], [nonrecursive], + [m4_define([_LTDL_MODE], [nonrecursive])]) +LT_OPTION_DEFINE([LTDL_INIT], [recursive], + [m4_define([_LTDL_MODE], [recursive])]) +LT_OPTION_DEFINE([LTDL_INIT], [subproject], + [m4_define([_LTDL_MODE], [subproject])]) + +m4_define([_LTDL_TYPE], []) +LT_OPTION_DEFINE([LTDL_INIT], [installable], + [m4_define([_LTDL_TYPE], [installable])]) +LT_OPTION_DEFINE([LTDL_INIT], [convenience], + [m4_define([_LTDL_TYPE], [convenience])]) diff --git a/m4/ltsugar.m4 b/m4/ltsugar.m4 new file mode 100644 index 0000000..48bc934 --- /dev/null +++ b/m4/ltsugar.m4 @@ -0,0 +1,124 @@ +# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*- +# +# Copyright (C) 2004-2005, 2007-2008, 2011-2015 Free Software +# Foundation, Inc. +# Written by Gary V. Vaughan, 2004 +# +# This file is free software; the Free Software Foundation gives +# unlimited permission to copy and/or distribute it, with or without +# modifications, as long as this notice is preserved. + +# serial 6 ltsugar.m4 + +# This is to help aclocal find these macros, as it can't see m4_define. +AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])]) + + +# lt_join(SEP, ARG1, [ARG2...]) +# ----------------------------- +# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their +# associated separator. +# Needed until we can rely on m4_join from Autoconf 2.62, since all earlier +# versions in m4sugar had bugs. +m4_define([lt_join], +[m4_if([$#], [1], [], + [$#], [2], [[$2]], + [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])]) +m4_define([_lt_join], +[m4_if([$#$2], [2], [], + [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])]) + + +# lt_car(LIST) +# lt_cdr(LIST) +# ------------ +# Manipulate m4 lists. +# These macros are necessary as long as will still need to support +# Autoconf-2.59, which quotes differently. +m4_define([lt_car], [[$1]]) +m4_define([lt_cdr], +[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])], + [$#], 1, [], + [m4_dquote(m4_shift($@))])]) +m4_define([lt_unquote], $1) + + +# lt_append(MACRO-NAME, STRING, [SEPARATOR]) +# ------------------------------------------ +# Redefine MACRO-NAME to hold its former content plus 'SEPARATOR''STRING'. +# Note that neither SEPARATOR nor STRING are expanded; they are appended +# to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked). +# No SEPARATOR is output if MACRO-NAME was previously undefined (different +# than defined and empty). +# +# This macro is needed until we can rely on Autoconf 2.62, since earlier +# versions of m4sugar mistakenly expanded SEPARATOR but not STRING. +m4_define([lt_append], +[m4_define([$1], + m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])]) + + + +# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...]) +# ---------------------------------------------------------- +# Produce a SEP delimited list of all paired combinations of elements of +# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list +# has the form PREFIXmINFIXSUFFIXn. +# Needed until we can rely on m4_combine added in Autoconf 2.62. +m4_define([lt_combine], +[m4_if(m4_eval([$# > 3]), [1], + [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl +[[m4_foreach([_Lt_prefix], [$2], + [m4_foreach([_Lt_suffix], + ]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[, + [_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])]) + + +# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ]) +# ----------------------------------------------------------------------- +# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited +# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ. +m4_define([lt_if_append_uniq], +[m4_ifdef([$1], + [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1], + [lt_append([$1], [$2], [$3])$4], + [$5])], + [lt_append([$1], [$2], [$3])$4])]) + + +# lt_dict_add(DICT, KEY, VALUE) +# ----------------------------- +m4_define([lt_dict_add], +[m4_define([$1($2)], [$3])]) + + +# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE) +# -------------------------------------------- +m4_define([lt_dict_add_subkey], +[m4_define([$1($2:$3)], [$4])]) + + +# lt_dict_fetch(DICT, KEY, [SUBKEY]) +# ---------------------------------- +m4_define([lt_dict_fetch], +[m4_ifval([$3], + m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]), + m4_ifdef([$1($2)], [m4_defn([$1($2)])]))]) + + +# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE]) +# ----------------------------------------------------------------- +m4_define([lt_if_dict_fetch], +[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4], + [$5], + [$6])]) + + +# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...]) +# -------------------------------------------------------------- +m4_define([lt_dict_filter], +[m4_if([$5], [], [], + [lt_join(m4_quote(m4_default([$4], [[, ]])), + lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]), + [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl +]) diff --git a/m4/ltversion.m4 b/m4/ltversion.m4 new file mode 100644 index 0000000..fa04b52 --- /dev/null +++ b/m4/ltversion.m4 @@ -0,0 +1,23 @@ +# ltversion.m4 -- version numbers -*- Autoconf -*- +# +# Copyright (C) 2004, 2011-2015 Free Software Foundation, Inc. +# Written by Scott James Remnant, 2004 +# +# This file is free software; the Free Software Foundation gives +# unlimited permission to copy and/or distribute it, with or without +# modifications, as long as this notice is preserved. + +# @configure_input@ + +# serial 4179 ltversion.m4 +# This file is part of GNU Libtool + +m4_define([LT_PACKAGE_VERSION], [2.4.6]) +m4_define([LT_PACKAGE_REVISION], [2.4.6]) + +AC_DEFUN([LTVERSION_VERSION], +[macro_version='2.4.6' +macro_revision='2.4.6' +_LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?]) +_LT_DECL(, macro_revision, 0) +]) diff --git a/m4/lt~obsolete.m4 b/m4/lt~obsolete.m4 new file mode 100644 index 0000000..c6b26f8 --- /dev/null +++ b/m4/lt~obsolete.m4 @@ -0,0 +1,99 @@ +# lt~obsolete.m4 -- aclocal satisfying obsolete definitions. -*-Autoconf-*- +# +# Copyright (C) 2004-2005, 2007, 2009, 2011-2015 Free Software +# Foundation, Inc. +# Written by Scott James Remnant, 2004. +# +# This file is free software; the Free Software Foundation gives +# unlimited permission to copy and/or distribute it, with or without +# modifications, as long as this notice is preserved. + +# serial 5 lt~obsolete.m4 + +# These exist entirely to fool aclocal when bootstrapping libtool. +# +# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN), +# which have later been changed to m4_define as they aren't part of the +# exported API, or moved to Autoconf or Automake where they belong. +# +# The trouble is, aclocal is a bit thick. It'll see the old AC_DEFUN +# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us +# using a macro with the same name in our local m4/libtool.m4 it'll +# pull the old libtool.m4 in (it doesn't see our shiny new m4_define +# and doesn't know about Autoconf macros at all.) +# +# So we provide this file, which has a silly filename so it's always +# included after everything else. This provides aclocal with the +# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything +# because those macros already exist, or will be overwritten later. +# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6. +# +# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here. +# Yes, that means every name once taken will need to remain here until +# we give up compatibility with versions before 1.7, at which point +# we need to keep only those names which we still refer to. + +# This is to help aclocal find these macros, as it can't see m4_define. +AC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])]) + +m4_ifndef([AC_LIBTOOL_LINKER_OPTION], [AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])]) +m4_ifndef([AC_PROG_EGREP], [AC_DEFUN([AC_PROG_EGREP])]) +m4_ifndef([_LT_AC_PROG_ECHO_BACKSLASH], [AC_DEFUN([_LT_AC_PROG_ECHO_BACKSLASH])]) +m4_ifndef([_LT_AC_SHELL_INIT], [AC_DEFUN([_LT_AC_SHELL_INIT])]) +m4_ifndef([_LT_AC_SYS_LIBPATH_AIX], [AC_DEFUN([_LT_AC_SYS_LIBPATH_AIX])]) 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[AC_DEFUN([_LT_COMPILER_BOILERPLATE])]) +m4_ifndef([_LT_LINKER_BOILERPLATE], [AC_DEFUN([_LT_LINKER_BOILERPLATE])]) +m4_ifndef([_AC_PROG_LIBTOOL], [AC_DEFUN([_AC_PROG_LIBTOOL])]) +m4_ifndef([AC_LIBTOOL_SETUP], [AC_DEFUN([AC_LIBTOOL_SETUP])]) +m4_ifndef([_LT_AC_CHECK_DLFCN], [AC_DEFUN([_LT_AC_CHECK_DLFCN])]) +m4_ifndef([AC_LIBTOOL_SYS_DYNAMIC_LINKER], [AC_DEFUN([AC_LIBTOOL_SYS_DYNAMIC_LINKER])]) +m4_ifndef([_LT_AC_TAGCONFIG], [AC_DEFUN([_LT_AC_TAGCONFIG])]) +m4_ifndef([AC_DISABLE_FAST_INSTALL], [AC_DEFUN([AC_DISABLE_FAST_INSTALL])]) +m4_ifndef([_LT_AC_LANG_CXX], [AC_DEFUN([_LT_AC_LANG_CXX])]) +m4_ifndef([_LT_AC_LANG_F77], [AC_DEFUN([_LT_AC_LANG_F77])]) +m4_ifndef([_LT_AC_LANG_GCJ], [AC_DEFUN([_LT_AC_LANG_GCJ])]) +m4_ifndef([AC_LIBTOOL_LANG_C_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_C_CONFIG])]) +m4_ifndef([_LT_AC_LANG_C_CONFIG], [AC_DEFUN([_LT_AC_LANG_C_CONFIG])]) +m4_ifndef([AC_LIBTOOL_LANG_CXX_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_CXX_CONFIG])]) +m4_ifndef([_LT_AC_LANG_CXX_CONFIG], 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[AC_DEFUN([_LT_PROG_F77])]) +m4_ifndef([_LT_PROG_FC], [AC_DEFUN([_LT_PROG_FC])]) +m4_ifndef([_LT_PROG_CXX], [AC_DEFUN([_LT_PROG_CXX])]) diff --git a/mach_dep.c b/mach_dep.c new file mode 100644 index 0000000..5f64d4d --- /dev/null +++ b/mach_dep.c @@ -0,0 +1,337 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +#include + +#ifdef AMIGA +# ifndef __GNUC__ +# include +# else +# include +# endif +#endif + +#if defined(MACOS) && defined(__MWERKS__) + +#if defined(POWERPC) + +# define NONVOLATILE_GPR_COUNT 19 + struct ppc_registers { + unsigned long gprs[NONVOLATILE_GPR_COUNT]; /* R13-R31 */ + }; + typedef struct ppc_registers ppc_registers; + +# if defined(CPPCHECK) + void getRegisters(ppc_registers* regs); +# else + asm static void getRegisters(register ppc_registers* regs) + { + stmw r13,regs->gprs /* save R13-R31 */ + blr + } +# endif + + static void PushMacRegisters(void) + { + ppc_registers regs; + int i; + getRegisters(®s); + for (i = 0; i < NONVOLATILE_GPR_COUNT; i++) + GC_push_one(regs.gprs[i]); + } + +#else /* M68K */ + + asm static void PushMacRegisters(void) + { + sub.w #4,sp /* reserve space for one parameter */ + move.l a2,(sp) + jsr GC_push_one + move.l a3,(sp) + jsr GC_push_one + move.l a4,(sp) + jsr GC_push_one +# if !__option(a6frames) + /* perhaps a6 should be pushed if stack frames are not being used */ + move.l a6,(sp) + jsr GC_push_one +# endif + /* skip a5 (globals), a6 (frame pointer), and a7 (stack pointer) */ + move.l d2,(sp) + jsr GC_push_one + move.l d3,(sp) + jsr GC_push_one + move.l d4,(sp) + jsr GC_push_one + move.l d5,(sp) + jsr GC_push_one + move.l d6,(sp) + jsr GC_push_one + move.l d7,(sp) + jsr GC_push_one + add.w #4,sp /* fix stack */ + rts + } + +#endif /* M68K */ + +#endif /* MACOS && __MWERKS__ */ + +# if defined(SPARC) || defined(IA64) + /* Value returned from register flushing routine; either sp (SPARC) */ + /* or ar.bsp (IA64). */ + GC_INNER ptr_t GC_save_regs_ret_val = NULL; +# endif + +/* Routine to mark from registers that are preserved by the C compiler. */ +/* This must be ported to every new architecture. It is not optional, */ +/* and should not be used on platforms that are either UNIX-like, or */ +/* require thread support. */ + +#undef HAVE_PUSH_REGS + +#if defined(USE_ASM_PUSH_REGS) +# define HAVE_PUSH_REGS +#else /* No asm implementation */ + +# ifdef STACK_NOT_SCANNED + void GC_push_regs(void) + { + /* empty */ + } +# define HAVE_PUSH_REGS + +# elif defined(M68K) && defined(AMIGA) + /* This function is not static because it could also be */ + /* erroneously defined in .S file, so this error would be caught */ + /* by the linker. */ + void GC_push_regs(void) + { + /* AMIGA - could be replaced by generic code */ + /* a0, a1, d0 and d1 are caller save */ + +# ifdef __GNUC__ + asm("subq.w &0x4,%sp"); /* allocate word on top of stack */ + + asm("mov.l %a2,(%sp)"); asm("jsr _GC_push_one"); + asm("mov.l %a3,(%sp)"); asm("jsr _GC_push_one"); + asm("mov.l %a4,(%sp)"); asm("jsr _GC_push_one"); + asm("mov.l %a5,(%sp)"); asm("jsr _GC_push_one"); + asm("mov.l %a6,(%sp)"); asm("jsr _GC_push_one"); + /* Skip frame pointer and stack pointer */ + asm("mov.l %d2,(%sp)"); asm("jsr _GC_push_one"); + asm("mov.l %d3,(%sp)"); asm("jsr _GC_push_one"); + asm("mov.l %d4,(%sp)"); asm("jsr _GC_push_one"); + asm("mov.l %d5,(%sp)"); asm("jsr _GC_push_one"); + asm("mov.l %d6,(%sp)"); asm("jsr _GC_push_one"); + asm("mov.l %d7,(%sp)"); asm("jsr _GC_push_one"); + + asm("addq.w &0x4,%sp"); /* put stack back where it was */ +# else /* !__GNUC__ */ + GC_push_one(getreg(REG_A2)); + GC_push_one(getreg(REG_A3)); +# ifndef __SASC + /* Can probably be changed to #if 0 -Kjetil M. (a4=globals) */ + GC_push_one(getreg(REG_A4)); +# endif + GC_push_one(getreg(REG_A5)); + GC_push_one(getreg(REG_A6)); + /* Skip stack pointer */ + GC_push_one(getreg(REG_D2)); + GC_push_one(getreg(REG_D3)); + GC_push_one(getreg(REG_D4)); + GC_push_one(getreg(REG_D5)); + GC_push_one(getreg(REG_D6)); + GC_push_one(getreg(REG_D7)); +# endif /* !__GNUC__ */ + } +# define HAVE_PUSH_REGS + +# elif defined(MACOS) + +# if defined(M68K) && defined(THINK_C) && !defined(CPPCHECK) +# define PushMacReg(reg) \ + move.l reg,(sp) \ + jsr GC_push_one + void GC_push_regs(void) + { + asm { + sub.w #4,sp ; reserve space for one parameter. + PushMacReg(a2); + PushMacReg(a3); + PushMacReg(a4); + ; skip a5 (globals), a6 (frame pointer), and a7 (stack pointer) + PushMacReg(d2); + PushMacReg(d3); + PushMacReg(d4); + PushMacReg(d5); + PushMacReg(d6); + PushMacReg(d7); + add.w #4,sp ; fix stack. + } + } +# define HAVE_PUSH_REGS +# undef PushMacReg +# elif defined(__MWERKS__) + void GC_push_regs(void) + { + PushMacRegisters(); + } +# define HAVE_PUSH_REGS +# endif /* __MWERKS__ */ +# endif /* MACOS */ + +#endif /* !USE_ASM_PUSH_REGS */ + +#if defined(HAVE_PUSH_REGS) && defined(THREADS) +# error GC_push_regs cannot be used with threads + /* Would fail for GC_do_blocking. There are probably other safety */ + /* issues. */ +# undef HAVE_PUSH_REGS +#endif + +#if !defined(HAVE_PUSH_REGS) && defined(UNIX_LIKE) +# include +# ifndef NO_GETCONTEXT +# if defined(DARWIN) \ + && (MAC_OS_X_VERSION_MAX_ALLOWED >= 1060 /*MAC_OS_X_VERSION_10_6*/) +# include +# else +# include +# endif /* !DARWIN */ +# ifdef GETCONTEXT_FPU_EXCMASK_BUG +# include +# endif +# endif +#endif /* !HAVE_PUSH_REGS */ + +/* Ensure that either registers are pushed, or callee-save registers */ +/* are somewhere on the stack, and then call fn(arg, ctxt). */ +/* ctxt is either a pointer to a ucontext_t we generated, or NULL. */ +GC_ATTR_NO_SANITIZE_ADDR +GC_INNER void GC_with_callee_saves_pushed(void (*fn)(ptr_t, void *), + volatile ptr_t arg) +{ + volatile int dummy; + void * volatile context = 0; + +# if defined(HAVE_PUSH_REGS) + GC_push_regs(); +# else +# if defined(UNIX_LIKE) && !defined(NO_GETCONTEXT) + /* Older versions of Darwin seem to lack getcontext(). */ + /* ARM and MIPS Linux often doesn't support a real */ + /* getcontext(). */ + ucontext_t ctxt; +# ifdef GETCONTEXT_FPU_EXCMASK_BUG + /* Workaround a bug (clearing the FPU exception mask) in */ + /* getcontext on Linux/x86_64. */ +# ifdef X86_64 + /* We manipulate FPU control word here just not to force the */ + /* client application to use -lm linker option. */ + unsigned short old_fcw; + +# if defined(CPPCHECK) + GC_noop1((word)&old_fcw); +# endif + __asm__ __volatile__ ("fstcw %0" : "=m" (*&old_fcw)); +# else + int except_mask = fegetexcept(); +# endif +# endif + + if (getcontext(&ctxt) < 0) { + WARN("getcontext failed:" + " using another register retrieval method...\n", 0); + /* E.g., to workaround a bug in Docker ubuntu_32bit. */ + } else { + context = &ctxt; + } +# ifdef GETCONTEXT_FPU_EXCMASK_BUG +# ifdef X86_64 + __asm__ __volatile__ ("fldcw %0" : : "m" (*&old_fcw)); + { + unsigned mxcsr; + /* And now correct the exception mask in SSE MXCSR. */ + __asm__ __volatile__ ("stmxcsr %0" : "=m" (*&mxcsr)); + mxcsr = (mxcsr & ~(FE_ALL_EXCEPT << 7)) | + ((old_fcw & FE_ALL_EXCEPT) << 7); + __asm__ __volatile__ ("ldmxcsr %0" : : "m" (*&mxcsr)); + } +# else /* !X86_64 */ + if (feenableexcept(except_mask) < 0) + ABORT("feenableexcept failed"); +# endif +# endif /* GETCONTEXT_FPU_EXCMASK_BUG */ +# if defined(SPARC) || defined(IA64) + /* On a register window machine, we need to save register */ + /* contents on the stack for this to work. This may already be */ + /* subsumed by the getcontext() call. */ + GC_save_regs_ret_val = GC_save_regs_in_stack(); +# endif + if (NULL == context) /* getcontext failed */ +# endif /* !NO_GETCONTEXT */ + { +# if defined(HAVE_BUILTIN_UNWIND_INIT) + /* This was suggested by Richard Henderson as the way to */ + /* force callee-save registers and register windows onto */ + /* the stack. */ + __builtin_unwind_init(); +# else + /* Generic code */ + /* The idea is due to Parag Patel at HP. */ + /* We're not sure whether he would like */ + /* to be acknowledged for it or not. */ + jmp_buf regs; + register word * i = (word *) ®s; + register ptr_t lim = (ptr_t)(®s) + (sizeof regs); + + /* Setjmp doesn't always clear all of the buffer. */ + /* That tends to preserve garbage. Clear it. */ + for (; (word)i < (word)lim; i++) { + *i = 0; + } +# if defined(MSWIN32) || defined(MSWINCE) || defined(UTS4) \ + || defined(OS2) || defined(CX_UX) || defined(__CC_ARM) \ + || defined(LINUX) || defined(EWS4800) || defined(RTEMS) + (void) setjmp(regs); +# else + (void) _setjmp(regs); + /* We don't want to mess with signals. According to */ + /* SUSV3, setjmp() may or may not save signal mask. */ + /* _setjmp won't, but is less portable. */ +# endif +# endif /* !HAVE_BUILTIN_UNWIND_INIT */ + } +# endif /* !HAVE_PUSH_REGS */ + /* FIXME: context here is sometimes just zero. At the moment the */ + /* callees don't really need it. */ + fn(arg, context); + /* Strongly discourage the compiler from treating the above */ + /* as a tail-call, since that would pop the register */ + /* contents before we get a chance to look at them. */ + GC_noop1((word)(&dummy)); +} + +#if defined(ASM_CLEAR_CODE) +# ifdef LINT + ptr_t GC_clear_stack_inner(ptr_t arg, word limit) + { + return limit ? arg : 0; /* use both arguments */ + } + /* The real version is in a .S file */ +# endif +#endif /* ASM_CLEAR_CODE */ diff --git a/malloc.c b/malloc.c new file mode 100644 index 0000000..502b3e3 --- /dev/null +++ b/malloc.c @@ -0,0 +1,644 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" +#include "gc_inline.h" /* for GC_malloc_kind */ + +#include +#include + +/* Allocate reclaim list for kind: */ +/* Return TRUE on success */ +STATIC GC_bool GC_alloc_reclaim_list(struct obj_kind *kind) +{ + struct hblk ** result = (struct hblk **) + GC_scratch_alloc((MAXOBJGRANULES+1) * sizeof(struct hblk *)); + if (result == 0) return(FALSE); + BZERO(result, (MAXOBJGRANULES+1)*sizeof(struct hblk *)); + kind -> ok_reclaim_list = result; + return(TRUE); +} + +GC_INNER GC_bool GC_collect_or_expand(word needed_blocks, + GC_bool ignore_off_page, + GC_bool retry); /* from alloc.c */ + +/* Allocate a large block of size lb bytes. */ +/* The block is not cleared. */ +/* Flags is 0 or IGNORE_OFF_PAGE. */ +/* EXTRA_BYTES were already added to lb. */ +GC_INNER ptr_t GC_alloc_large(size_t lb, int k, unsigned flags) +{ + struct hblk * h; + word n_blocks; + ptr_t result; + GC_bool retry = FALSE; + + GC_ASSERT(I_HOLD_LOCK()); + lb = ROUNDUP_GRANULE_SIZE(lb); + n_blocks = OBJ_SZ_TO_BLOCKS_CHECKED(lb); + if (!EXPECT(GC_is_initialized, TRUE)) { + DCL_LOCK_STATE; + UNLOCK(); /* just to unset GC_lock_holder */ + GC_init(); + LOCK(); + } + /* Do our share of marking work */ + if (GC_incremental && !GC_dont_gc) + GC_collect_a_little_inner((int)n_blocks); + h = GC_allochblk(lb, k, flags); +# ifdef USE_MUNMAP + if (0 == h) { + GC_merge_unmapped(); + h = GC_allochblk(lb, k, flags); + } +# endif + while (0 == h && GC_collect_or_expand(n_blocks, flags != 0, retry)) { + h = GC_allochblk(lb, k, flags); + retry = TRUE; + } + if (h == 0) { + result = 0; + } else { + size_t total_bytes = n_blocks * HBLKSIZE; + if (n_blocks > 1) { + GC_large_allocd_bytes += total_bytes; + if (GC_large_allocd_bytes > GC_max_large_allocd_bytes) + GC_max_large_allocd_bytes = GC_large_allocd_bytes; + } + /* FIXME: Do we need some way to reset GC_max_large_allocd_bytes? */ + result = h -> hb_body; + } + return result; +} + +/* Allocate a large block of size lb bytes. Clear if appropriate. */ +/* EXTRA_BYTES were already added to lb. */ +STATIC ptr_t GC_alloc_large_and_clear(size_t lb, int k, unsigned flags) +{ + ptr_t result; + + GC_ASSERT(I_HOLD_LOCK()); + result = GC_alloc_large(lb, k, flags); + if (result != NULL + && (GC_debugging_started || GC_obj_kinds[k].ok_init)) { + word n_blocks = OBJ_SZ_TO_BLOCKS(lb); + + /* Clear the whole block, in case of GC_realloc call. */ + BZERO(result, n_blocks * HBLKSIZE); + } + return result; +} + +/* allocate lb bytes for an object of kind k. */ +/* Should not be used to directly to allocate */ +/* objects such as STUBBORN objects that */ +/* require special handling on allocation. */ +GC_INNER void * GC_generic_malloc_inner(size_t lb, int k) +{ + void *op; + + GC_ASSERT(I_HOLD_LOCK()); + GC_ASSERT(k < MAXOBJKINDS); + if (SMALL_OBJ(lb)) { + struct obj_kind * kind = GC_obj_kinds + k; + size_t lg = GC_size_map[lb]; + void ** opp = &(kind -> ok_freelist[lg]); + + op = *opp; + if (EXPECT(0 == op, FALSE)) { + if (lg == 0) { + if (!EXPECT(GC_is_initialized, TRUE)) { + DCL_LOCK_STATE; + UNLOCK(); /* just to unset GC_lock_holder */ + GC_init(); + LOCK(); + lg = GC_size_map[lb]; + } + if (0 == lg) { + GC_extend_size_map(lb); + lg = GC_size_map[lb]; + GC_ASSERT(lg != 0); + } + /* Retry */ + opp = &(kind -> ok_freelist[lg]); + op = *opp; + } + if (0 == op) { + if (0 == kind -> ok_reclaim_list && + !GC_alloc_reclaim_list(kind)) + return NULL; + op = GC_allocobj(lg, k); + if (0 == op) + return NULL; + } + } + *opp = obj_link(op); + obj_link(op) = 0; + GC_bytes_allocd += GRANULES_TO_BYTES((word)lg); + } else { + op = (ptr_t)GC_alloc_large_and_clear(ADD_SLOP(lb), k, 0); + if (op != NULL) + GC_bytes_allocd += lb; + } + + return op; +} + +#if defined(DBG_HDRS_ALL) || defined(GC_GCJ_SUPPORT) \ + || !defined(GC_NO_FINALIZATION) + /* Allocate a composite object of size n bytes. The caller */ + /* guarantees that pointers past the first page are not relevant. */ + GC_INNER void * GC_generic_malloc_inner_ignore_off_page(size_t lb, int k) + { + word lb_adjusted; + void * op; + + GC_ASSERT(I_HOLD_LOCK()); + if (lb <= HBLKSIZE) + return GC_generic_malloc_inner(lb, k); + GC_ASSERT(k < MAXOBJKINDS); + lb_adjusted = ADD_SLOP(lb); + op = GC_alloc_large_and_clear(lb_adjusted, k, IGNORE_OFF_PAGE); + if (op != NULL) + GC_bytes_allocd += lb_adjusted; + return op; + } +#endif + +#ifdef GC_COLLECT_AT_MALLOC + /* Parameter to force GC at every malloc of size greater or equal to */ + /* the given value. This might be handy during debugging. */ +# if defined(CPPCHECK) + size_t GC_dbg_collect_at_malloc_min_lb = 16*1024; /* e.g. */ +# else + size_t GC_dbg_collect_at_malloc_min_lb = (GC_COLLECT_AT_MALLOC); +# endif +#endif + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_generic_malloc(size_t lb, int k) +{ + void * result; + DCL_LOCK_STATE; + + GC_ASSERT(k < MAXOBJKINDS); + if (EXPECT(GC_have_errors, FALSE)) + GC_print_all_errors(); + GC_INVOKE_FINALIZERS(); + GC_DBG_COLLECT_AT_MALLOC(lb); + if (SMALL_OBJ(lb)) { + LOCK(); + result = GC_generic_malloc_inner(lb, k); + UNLOCK(); + } else { + size_t lg; + size_t lb_rounded; + word n_blocks; + GC_bool init; + + lg = ROUNDED_UP_GRANULES(lb); + lb_rounded = GRANULES_TO_BYTES(lg); + n_blocks = OBJ_SZ_TO_BLOCKS(lb_rounded); + init = GC_obj_kinds[k].ok_init; + LOCK(); + result = (ptr_t)GC_alloc_large(lb_rounded, k, 0); + if (0 != result) { + if (GC_debugging_started) { + BZERO(result, n_blocks * HBLKSIZE); + } else { +# ifdef THREADS + /* Clear any memory that might be used for GC descriptors */ + /* before we release the lock. */ + ((word *)result)[0] = 0; + ((word *)result)[1] = 0; + ((word *)result)[GRANULES_TO_WORDS(lg)-1] = 0; + ((word *)result)[GRANULES_TO_WORDS(lg)-2] = 0; +# endif + } + GC_bytes_allocd += lb_rounded; + } + UNLOCK(); + if (init && !GC_debugging_started && 0 != result) { + BZERO(result, n_blocks * HBLKSIZE); + } + } + if (0 == result) { + return((*GC_get_oom_fn())(lb)); + } else { + return(result); + } +} + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_kind_global(size_t lb, int k) +{ + GC_ASSERT(k < MAXOBJKINDS); + if (SMALL_OBJ(lb)) { + void *op; + void **opp; + size_t lg = GC_size_map[lb]; + DCL_LOCK_STATE; + + GC_DBG_COLLECT_AT_MALLOC(lb); + LOCK(); + opp = &GC_obj_kinds[k].ok_freelist[lg]; + op = *opp; + if (EXPECT(op != NULL, TRUE)) { + if (k == PTRFREE) { + *opp = obj_link(op); + } else { + GC_ASSERT(0 == obj_link(op) + || ((word)obj_link(op) + <= (word)GC_greatest_plausible_heap_addr + && (word)obj_link(op) + >= (word)GC_least_plausible_heap_addr)); + *opp = obj_link(op); + obj_link(op) = 0; + } + GC_bytes_allocd += GRANULES_TO_BYTES((word)lg); + UNLOCK(); + return op; + } + UNLOCK(); + } + return GENERAL_MALLOC(lb, k); +} + +#if defined(THREADS) && !defined(THREAD_LOCAL_ALLOC) + GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_kind(size_t lb, int k) + { + return GC_malloc_kind_global(lb, k); + } +#endif + +/* Allocate lb bytes of atomic (pointer-free) data. */ +GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_atomic(size_t lb) +{ + return GC_malloc_kind(lb, PTRFREE); +} + +/* Allocate lb bytes of composite (pointerful) data. */ +GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc(size_t lb) +{ + return GC_malloc_kind(lb, NORMAL); +} + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_generic_malloc_uncollectable( + size_t lb, int k) +{ + void *op; + DCL_LOCK_STATE; + + GC_ASSERT(k < MAXOBJKINDS); + if (SMALL_OBJ(lb)) { + void **opp; + size_t lg; + + GC_DBG_COLLECT_AT_MALLOC(lb); + if (EXTRA_BYTES != 0 && lb != 0) lb--; + /* We don't need the extra byte, since this won't be */ + /* collected anyway. */ + lg = GC_size_map[lb]; + LOCK(); + opp = &GC_obj_kinds[k].ok_freelist[lg]; + op = *opp; + if (EXPECT(op != NULL, TRUE)) { + *opp = obj_link(op); + obj_link(op) = 0; + GC_bytes_allocd += GRANULES_TO_BYTES((word)lg); + /* Mark bit was already set on free list. It will be */ + /* cleared only temporarily during a collection, as a */ + /* result of the normal free list mark bit clearing. */ + GC_non_gc_bytes += GRANULES_TO_BYTES((word)lg); + UNLOCK(); + } else { + UNLOCK(); + op = GC_generic_malloc(lb, k); + /* For small objects, the free lists are completely marked. */ + } + GC_ASSERT(0 == op || GC_is_marked(op)); + } else { + hdr * hhdr; + + op = GC_generic_malloc(lb, k); + if (NULL == op) + return NULL; + + GC_ASSERT(((word)op & (HBLKSIZE - 1)) == 0); /* large block */ + hhdr = HDR(op); + /* We don't need the lock here, since we have an undisguised */ + /* pointer. We do need to hold the lock while we adjust */ + /* mark bits. */ + LOCK(); + set_mark_bit_from_hdr(hhdr, 0); /* Only object. */ +# ifndef THREADS + GC_ASSERT(hhdr -> hb_n_marks == 0); + /* This is not guaranteed in the multi-threaded case */ + /* because the counter could be updated before locking. */ +# endif + hhdr -> hb_n_marks = 1; + UNLOCK(); + } + return op; +} + +/* Allocate lb bytes of pointerful, traced, but not collectible data. */ +GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_uncollectable(size_t lb) +{ + return GC_generic_malloc_uncollectable(lb, UNCOLLECTABLE); +} + +#ifdef GC_ATOMIC_UNCOLLECTABLE + /* Allocate lb bytes of pointer-free, untraced, uncollectible data */ + /* This is normally roughly equivalent to the system malloc. */ + /* But it may be useful if malloc is redefined. */ + GC_API GC_ATTR_MALLOC void * GC_CALL + GC_malloc_atomic_uncollectable(size_t lb) + { + return GC_generic_malloc_uncollectable(lb, AUNCOLLECTABLE); + } +#endif /* GC_ATOMIC_UNCOLLECTABLE */ + +#if defined(REDIRECT_MALLOC) && !defined(REDIRECT_MALLOC_IN_HEADER) + +# ifndef MSWINCE +# include +# endif + + /* Avoid unnecessary nested procedure calls here, by #defining some */ + /* malloc replacements. Otherwise we end up saving a meaningless */ + /* return address in the object. It also speeds things up, but it is */ + /* admittedly quite ugly. */ +# define GC_debug_malloc_replacement(lb) GC_debug_malloc(lb, GC_DBG_EXTRAS) + +# if defined(CPPCHECK) +# define REDIRECT_MALLOC_F GC_malloc /* e.g. */ +# else +# define REDIRECT_MALLOC_F REDIRECT_MALLOC +# endif + + void * malloc(size_t lb) + { + /* It might help to manually inline the GC_malloc call here. */ + /* But any decent compiler should reduce the extra procedure call */ + /* to at most a jump instruction in this case. */ +# if defined(I386) && defined(GC_SOLARIS_THREADS) + /* Thread initialization can call malloc before we are ready for. */ + /* It is not clear that this is enough to help matters. */ + /* The thread implementation may well call malloc at other */ + /* inopportune times. */ + if (!EXPECT(GC_is_initialized, TRUE)) return sbrk(lb); +# endif + return (void *)REDIRECT_MALLOC_F(lb); + } + +# if defined(GC_LINUX_THREADS) + STATIC ptr_t GC_libpthread_start = 0; + STATIC ptr_t GC_libpthread_end = 0; + STATIC ptr_t GC_libld_start = 0; + STATIC ptr_t GC_libld_end = 0; + + STATIC void GC_init_lib_bounds(void) + { + IF_CANCEL(int cancel_state;) + + if (GC_libpthread_start != 0) return; + DISABLE_CANCEL(cancel_state); + GC_init(); /* if not called yet */ + if (!GC_text_mapping("libpthread-", + &GC_libpthread_start, &GC_libpthread_end)) { + WARN("Failed to find libpthread.so text mapping: Expect crash\n", 0); + /* This might still work with some versions of libpthread, */ + /* so we don't abort. Perhaps we should. */ + /* Generate message only once: */ + GC_libpthread_start = (ptr_t)1; + } + if (!GC_text_mapping("ld-", &GC_libld_start, &GC_libld_end)) { + WARN("Failed to find ld.so text mapping: Expect crash\n", 0); + } + RESTORE_CANCEL(cancel_state); + } +# endif /* GC_LINUX_THREADS */ + + void * calloc(size_t n, size_t lb) + { + if ((lb | n) > GC_SQRT_SIZE_MAX /* fast initial test */ + && lb && n > GC_SIZE_MAX / lb) + return (*GC_get_oom_fn())(GC_SIZE_MAX); /* n*lb overflow */ +# if defined(GC_LINUX_THREADS) + /* libpthread allocated some memory that is only pointed to by */ + /* mmapped thread stacks. Make sure it is not collectible. */ + { + static GC_bool lib_bounds_set = FALSE; + ptr_t caller = (ptr_t)__builtin_return_address(0); + /* This test does not need to ensure memory visibility, since */ + /* the bounds will be set when/if we create another thread. */ + if (!EXPECT(lib_bounds_set, TRUE)) { + GC_init_lib_bounds(); + lib_bounds_set = TRUE; + } + if (((word)caller >= (word)GC_libpthread_start + && (word)caller < (word)GC_libpthread_end) + || ((word)caller >= (word)GC_libld_start + && (word)caller < (word)GC_libld_end)) + return GC_generic_malloc_uncollectable(n * lb, UNCOLLECTABLE); + /* The two ranges are actually usually adjacent, so there may */ + /* be a way to speed this up. */ + } +# endif + return (void *)REDIRECT_MALLOC_F(n * lb); + } + +# ifndef strdup + char *strdup(const char *s) + { + size_t lb = strlen(s) + 1; + char *result = (char *)REDIRECT_MALLOC_F(lb); + if (result == 0) { + errno = ENOMEM; + return 0; + } + BCOPY(s, result, lb); + return result; + } +# endif /* !defined(strdup) */ + /* If strdup is macro defined, we assume that it actually calls malloc, */ + /* and thus the right thing will happen even without overriding it. */ + /* This seems to be true on most Linux systems. */ + +# ifndef strndup + /* This is similar to strdup(). */ + char *strndup(const char *str, size_t size) + { + char *copy; + size_t len = strlen(str); + if (len > size) + len = size; + copy = (char *)REDIRECT_MALLOC_F(len + 1); + if (copy == NULL) { + errno = ENOMEM; + return NULL; + } + BCOPY(str, copy, len); + copy[len] = '\0'; + return copy; + } +# endif /* !strndup */ + +# undef GC_debug_malloc_replacement + +#endif /* REDIRECT_MALLOC */ + +/* Explicitly deallocate an object p. */ +GC_API void GC_CALL GC_free(void * p) +{ + struct hblk *h; + hdr *hhdr; + size_t sz; /* In bytes */ + size_t ngranules; /* sz in granules */ + int knd; + struct obj_kind * ok; + DCL_LOCK_STATE; + + if (p == 0) return; + /* Required by ANSI. It's not my fault ... */ +# ifdef LOG_ALLOCS + GC_log_printf("GC_free(%p) after GC #%lu\n", + p, (unsigned long)GC_gc_no); +# endif + h = HBLKPTR(p); + hhdr = HDR(h); +# if defined(REDIRECT_MALLOC) && \ + ((defined(NEED_CALLINFO) && defined(GC_HAVE_BUILTIN_BACKTRACE)) \ + || defined(GC_SOLARIS_THREADS) || defined(GC_LINUX_THREADS) \ + || defined(MSWIN32)) + /* This might be called indirectly by GC_print_callers to free */ + /* the result of backtrace_symbols. */ + /* For Solaris, we have to redirect malloc calls during */ + /* initialization. For the others, this seems to happen */ + /* implicitly. */ + /* Don't try to deallocate that memory. */ + if (0 == hhdr) return; +# endif + GC_ASSERT(GC_base(p) == p); + sz = hhdr -> hb_sz; + ngranules = BYTES_TO_GRANULES(sz); + knd = hhdr -> hb_obj_kind; + ok = &GC_obj_kinds[knd]; + if (EXPECT(ngranules <= MAXOBJGRANULES, TRUE)) { + void **flh; + + LOCK(); + GC_bytes_freed += sz; + if (IS_UNCOLLECTABLE(knd)) GC_non_gc_bytes -= sz; + /* Its unnecessary to clear the mark bit. If the */ + /* object is reallocated, it doesn't matter. O.w. the */ + /* collector will do it, since it's on a free list. */ + if (ok -> ok_init) { + BZERO((word *)p + 1, sz-sizeof(word)); + } + flh = &(ok -> ok_freelist[ngranules]); + obj_link(p) = *flh; + *flh = (ptr_t)p; + UNLOCK(); + } else { + size_t nblocks = OBJ_SZ_TO_BLOCKS(sz); + + LOCK(); + GC_bytes_freed += sz; + if (IS_UNCOLLECTABLE(knd)) GC_non_gc_bytes -= sz; + if (nblocks > 1) { + GC_large_allocd_bytes -= nblocks * HBLKSIZE; + } + GC_freehblk(h); + UNLOCK(); + } +} + +/* Explicitly deallocate an object p when we already hold lock. */ +/* Only used for internally allocated objects, so we can take some */ +/* shortcuts. */ +#ifdef THREADS + GC_INNER void GC_free_inner(void * p) + { + struct hblk *h; + hdr *hhdr; + size_t sz; /* bytes */ + size_t ngranules; /* sz in granules */ + int knd; + struct obj_kind * ok; + + h = HBLKPTR(p); + hhdr = HDR(h); + knd = hhdr -> hb_obj_kind; + sz = hhdr -> hb_sz; + ngranules = BYTES_TO_GRANULES(sz); + ok = &GC_obj_kinds[knd]; + if (ngranules <= MAXOBJGRANULES) { + void ** flh; + + GC_bytes_freed += sz; + if (IS_UNCOLLECTABLE(knd)) GC_non_gc_bytes -= sz; + if (ok -> ok_init) { + BZERO((word *)p + 1, sz-sizeof(word)); + } + flh = &(ok -> ok_freelist[ngranules]); + obj_link(p) = *flh; + *flh = (ptr_t)p; + } else { + size_t nblocks = OBJ_SZ_TO_BLOCKS(sz); + GC_bytes_freed += sz; + if (IS_UNCOLLECTABLE(knd)) GC_non_gc_bytes -= sz; + if (nblocks > 1) { + GC_large_allocd_bytes -= nblocks * HBLKSIZE; + } + GC_freehblk(h); + } + } +#endif /* THREADS */ + +#if defined(REDIRECT_MALLOC) && !defined(REDIRECT_FREE) +# define REDIRECT_FREE GC_free +#endif + +#if defined(REDIRECT_FREE) && !defined(REDIRECT_MALLOC_IN_HEADER) + +# if defined(CPPCHECK) +# define REDIRECT_FREE_F GC_free /* e.g. */ +# else +# define REDIRECT_FREE_F REDIRECT_FREE +# endif + + void free(void * p) + { +# ifndef IGNORE_FREE +# if defined(GC_LINUX_THREADS) && !defined(USE_PROC_FOR_LIBRARIES) + /* Don't bother with initialization checks. If nothing */ + /* has been initialized, the check fails, and that's safe, */ + /* since we have not allocated uncollectible objects neither. */ + ptr_t caller = (ptr_t)__builtin_return_address(0); + /* This test does not need to ensure memory visibility, since */ + /* the bounds will be set when/if we create another thread. */ + if (((word)caller >= (word)GC_libpthread_start + && (word)caller < (word)GC_libpthread_end) + || ((word)caller >= (word)GC_libld_start + && (word)caller < (word)GC_libld_end)) { + GC_free(p); + return; + } +# endif + REDIRECT_FREE_F(p); +# endif + } +#endif /* REDIRECT_FREE */ diff --git a/mallocx.c b/mallocx.c new file mode 100644 index 0000000..f7a680a --- /dev/null +++ b/mallocx.c @@ -0,0 +1,566 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 2000 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" +#include "gc_inline.h" /* for GC_malloc_kind */ + +/* + * These are extra allocation routines which are likely to be less + * frequently used than those in malloc.c. They are separate in the + * hope that the .o file will be excluded from statically linked + * executables. We should probably break this up further. + */ + +#include +#include + +#ifdef MSWINCE +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN 1 +# endif +# define NOSERVICE +# include +#else +# include +#endif + +/* Some externally visible but unadvertised variables to allow access to */ +/* free lists from inlined allocators without including gc_priv.h */ +/* or introducing dependencies on internal data structure layouts. */ +void ** const GC_objfreelist_ptr = GC_objfreelist; +void ** const GC_aobjfreelist_ptr = GC_aobjfreelist; +void ** const GC_uobjfreelist_ptr = GC_uobjfreelist; +# ifdef GC_ATOMIC_UNCOLLECTABLE + void ** const GC_auobjfreelist_ptr = GC_auobjfreelist; +# endif + +GC_API int GC_CALL GC_get_kind_and_size(const void * p, size_t * psize) +{ + hdr * hhdr = HDR(p); + + if (psize != NULL) { + *psize = hhdr -> hb_sz; + } + return hhdr -> hb_obj_kind; +} + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_generic_or_special_malloc(size_t lb, + int knd) +{ + switch(knd) { +# ifdef STUBBORN_ALLOC + case STUBBORN: + return GC_malloc_stubborn(lb); +# endif + case PTRFREE: + case NORMAL: + return GC_malloc_kind(lb, knd); + case UNCOLLECTABLE: +# ifdef GC_ATOMIC_UNCOLLECTABLE + case AUNCOLLECTABLE: +# endif + return GC_generic_malloc_uncollectable(lb, knd); + default: + return GC_generic_malloc(lb, knd); + } +} + +/* Change the size of the block pointed to by p to contain at least */ +/* lb bytes. The object may be (and quite likely will be) moved. */ +/* The kind (e.g. atomic) is the same as that of the old. */ +/* Shrinking of large blocks is not implemented well. */ +GC_API void * GC_CALL GC_realloc(void * p, size_t lb) +{ + struct hblk * h; + hdr * hhdr; + void * result; + size_t sz; /* Current size in bytes */ + size_t orig_sz; /* Original sz in bytes */ + int obj_kind; + + if (p == 0) return(GC_malloc(lb)); /* Required by ANSI */ + if (0 == lb) /* and p != NULL */ { +# ifndef IGNORE_FREE + GC_free(p); +# endif + return NULL; + } + h = HBLKPTR(p); + hhdr = HDR(h); + sz = hhdr -> hb_sz; + obj_kind = hhdr -> hb_obj_kind; + orig_sz = sz; + + if (sz > MAXOBJBYTES) { + /* Round it up to the next whole heap block */ + word descr; + + sz = (sz+HBLKSIZE-1) & (~HBLKMASK); + hhdr -> hb_sz = sz; + descr = GC_obj_kinds[obj_kind].ok_descriptor; + if (GC_obj_kinds[obj_kind].ok_relocate_descr) descr += sz; + hhdr -> hb_descr = descr; +# ifdef MARK_BIT_PER_OBJ + GC_ASSERT(hhdr -> hb_inv_sz == LARGE_INV_SZ); +# else + GC_ASSERT((hhdr -> hb_flags & LARGE_BLOCK) != 0 + && hhdr -> hb_map[ANY_INDEX] == 1); +# endif + if (IS_UNCOLLECTABLE(obj_kind)) GC_non_gc_bytes += (sz - orig_sz); + /* Extra area is already cleared by GC_alloc_large_and_clear. */ + } + if (ADD_SLOP(lb) <= sz) { + if (lb >= (sz >> 1)) { +# ifdef STUBBORN_ALLOC + if (obj_kind == STUBBORN) GC_change_stubborn(p); +# endif + if (orig_sz > lb) { + /* Clear unneeded part of object to avoid bogus pointer */ + /* tracing. */ + /* Safe for stubborn objects. */ + BZERO(((ptr_t)p) + lb, orig_sz - lb); + } + return(p); + } + /* shrink */ + sz = lb; + } + result = GC_generic_or_special_malloc((word)lb, obj_kind); + if (result != NULL) { + /* In case of shrink, it could also return original object. */ + /* But this gives the client warning of imminent disaster. */ + BCOPY(p, result, sz); +# ifndef IGNORE_FREE + GC_free(p); +# endif + } + return result; +} + +# if defined(REDIRECT_MALLOC) && !defined(REDIRECT_REALLOC) +# define REDIRECT_REALLOC GC_realloc +# endif + +# ifdef REDIRECT_REALLOC + +/* As with malloc, avoid two levels of extra calls here. */ +# define GC_debug_realloc_replacement(p, lb) \ + GC_debug_realloc(p, lb, GC_DBG_EXTRAS) + +# if !defined(REDIRECT_MALLOC_IN_HEADER) + void * realloc(void * p, size_t lb) + { + return(REDIRECT_REALLOC(p, lb)); + } +# endif + +# undef GC_debug_realloc_replacement +# endif /* REDIRECT_REALLOC */ + +/* Allocate memory such that only pointers to near the */ +/* beginning of the object are considered. */ +/* We avoid holding allocation lock while we clear the memory. */ +GC_API GC_ATTR_MALLOC void * GC_CALL + GC_generic_malloc_ignore_off_page(size_t lb, int k) +{ + void *result; + size_t lg; + size_t lb_rounded; + word n_blocks; + GC_bool init; + DCL_LOCK_STATE; + + if (SMALL_OBJ(lb)) + return GC_generic_malloc(lb, k); + GC_ASSERT(k < MAXOBJKINDS); + lg = ROUNDED_UP_GRANULES(lb); + lb_rounded = GRANULES_TO_BYTES(lg); + n_blocks = OBJ_SZ_TO_BLOCKS(lb_rounded); + init = GC_obj_kinds[k].ok_init; + if (EXPECT(GC_have_errors, FALSE)) + GC_print_all_errors(); + GC_INVOKE_FINALIZERS(); + GC_DBG_COLLECT_AT_MALLOC(lb); + LOCK(); + result = (ptr_t)GC_alloc_large(ADD_SLOP(lb), k, IGNORE_OFF_PAGE); + if (NULL == result) { + GC_oom_func oom_fn = GC_oom_fn; + UNLOCK(); + return (*oom_fn)(lb); + } + + if (GC_debugging_started) { + BZERO(result, n_blocks * HBLKSIZE); + } else { +# ifdef THREADS + /* Clear any memory that might be used for GC descriptors */ + /* before we release the lock. */ + ((word *)result)[0] = 0; + ((word *)result)[1] = 0; + ((word *)result)[GRANULES_TO_WORDS(lg)-1] = 0; + ((word *)result)[GRANULES_TO_WORDS(lg)-2] = 0; +# endif + } + GC_bytes_allocd += lb_rounded; + UNLOCK(); + if (init && !GC_debugging_started) { + BZERO(result, n_blocks * HBLKSIZE); + } + return(result); +} + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_ignore_off_page(size_t lb) +{ + return GC_generic_malloc_ignore_off_page(lb, NORMAL); +} + +GC_API GC_ATTR_MALLOC void * GC_CALL + GC_malloc_atomic_ignore_off_page(size_t lb) +{ + return GC_generic_malloc_ignore_off_page(lb, PTRFREE); +} + +/* Increment GC_bytes_allocd from code that doesn't have direct access */ +/* to GC_arrays. */ +GC_API void GC_CALL GC_incr_bytes_allocd(size_t n) +{ + GC_bytes_allocd += n; +} + +/* The same for GC_bytes_freed. */ +GC_API void GC_CALL GC_incr_bytes_freed(size_t n) +{ + GC_bytes_freed += n; +} + +# ifdef PARALLEL_MARK + STATIC volatile AO_t GC_bytes_allocd_tmp = 0; + /* Number of bytes of memory allocated since */ + /* we released the GC lock. Instead of */ + /* reacquiring the GC lock just to add this in, */ + /* we add it in the next time we reacquire */ + /* the lock. (Atomically adding it doesn't */ + /* work, since we would have to atomically */ + /* update it in GC_malloc, which is too */ + /* expensive.) */ +# endif /* PARALLEL_MARK */ + +/* Return a list of 1 or more objects of the indicated size, linked */ +/* through the first word in the object. This has the advantage that */ +/* it acquires the allocation lock only once, and may greatly reduce */ +/* time wasted contending for the allocation lock. Typical usage would */ +/* be in a thread that requires many items of the same size. It would */ +/* keep its own free list in thread-local storage, and call */ +/* GC_malloc_many or friends to replenish it. (We do not round up */ +/* object sizes, since a call indicates the intention to consume many */ +/* objects of exactly this size.) */ +/* We assume that the size is a multiple of GRANULE_BYTES. */ +/* We return the free-list by assigning it to *result, since it is */ +/* not safe to return, e.g. a linked list of pointer-free objects, */ +/* since the collector would not retain the entire list if it were */ +/* invoked just as we were returning. */ +/* Note that the client should usually clear the link field. */ +GC_API void GC_CALL GC_generic_malloc_many(size_t lb, int k, void **result) +{ + void *op; + void *p; + void **opp; + size_t lw; /* Length in words. */ + size_t lg; /* Length in granules. */ + signed_word my_bytes_allocd = 0; + struct obj_kind * ok = &(GC_obj_kinds[k]); + struct hblk ** rlh; + DCL_LOCK_STATE; + + GC_ASSERT(lb != 0 && (lb & (GRANULE_BYTES-1)) == 0); + if (!SMALL_OBJ(lb)) { + op = GC_generic_malloc(lb, k); + if (EXPECT(0 != op, TRUE)) + obj_link(op) = 0; + *result = op; + return; + } + GC_ASSERT(k < MAXOBJKINDS); + lw = BYTES_TO_WORDS(lb); + lg = BYTES_TO_GRANULES(lb); + if (EXPECT(GC_have_errors, FALSE)) + GC_print_all_errors(); + GC_INVOKE_FINALIZERS(); + GC_DBG_COLLECT_AT_MALLOC(lb); + if (!EXPECT(GC_is_initialized, TRUE)) GC_init(); + LOCK(); + /* Do our share of marking work */ + if (GC_incremental && !GC_dont_gc) { + ENTER_GC(); + GC_collect_a_little_inner(1); + EXIT_GC(); + } + /* First see if we can reclaim a page of objects waiting to be */ + /* reclaimed. */ + rlh = ok -> ok_reclaim_list; + if (rlh != NULL) { + struct hblk * hbp; + hdr * hhdr; + + rlh += lg; + while ((hbp = *rlh) != 0) { + hhdr = HDR(hbp); + *rlh = hhdr -> hb_next; + GC_ASSERT(hhdr -> hb_sz == lb); + hhdr -> hb_last_reclaimed = (unsigned short) GC_gc_no; +# ifdef PARALLEL_MARK + if (GC_parallel) { + signed_word my_bytes_allocd_tmp = + (signed_word)AO_load(&GC_bytes_allocd_tmp); + GC_ASSERT(my_bytes_allocd_tmp >= 0); + /* We only decrement it while holding the GC lock. */ + /* Thus we can't accidentally adjust it down in more */ + /* than one thread simultaneously. */ + + if (my_bytes_allocd_tmp != 0) { + (void)AO_fetch_and_add(&GC_bytes_allocd_tmp, + (AO_t)(-my_bytes_allocd_tmp)); + GC_bytes_allocd += my_bytes_allocd_tmp; + } + GC_acquire_mark_lock(); + ++ GC_fl_builder_count; + UNLOCK(); + GC_release_mark_lock(); + } +# endif + op = GC_reclaim_generic(hbp, hhdr, lb, + ok -> ok_init, 0, &my_bytes_allocd); + if (op != 0) { + /* We also reclaimed memory, so we need to adjust */ + /* that count. */ + /* This should be atomic, so the results may be */ + /* inaccurate. */ + GC_bytes_found += my_bytes_allocd; +# ifdef PARALLEL_MARK + if (GC_parallel) { + *result = op; + (void)AO_fetch_and_add(&GC_bytes_allocd_tmp, + (AO_t)my_bytes_allocd); + GC_acquire_mark_lock(); + -- GC_fl_builder_count; + if (GC_fl_builder_count == 0) GC_notify_all_builder(); + GC_release_mark_lock(); + (void) GC_clear_stack(0); + return; + } +# endif + GC_bytes_allocd += my_bytes_allocd; + goto out; + } +# ifdef PARALLEL_MARK + if (GC_parallel) { + GC_acquire_mark_lock(); + -- GC_fl_builder_count; + if (GC_fl_builder_count == 0) GC_notify_all_builder(); + GC_release_mark_lock(); + LOCK(); + /* GC lock is needed for reclaim list access. We */ + /* must decrement fl_builder_count before reacquiring */ + /* the lock. Hopefully this path is rare. */ + } +# endif + } + } + /* Next try to use prefix of global free list if there is one. */ + /* We don't refill it, but we need to use it up before allocating */ + /* a new block ourselves. */ + opp = &(GC_obj_kinds[k].ok_freelist[lg]); + if ( (op = *opp) != 0 ) { + *opp = 0; + my_bytes_allocd = 0; + for (p = op; p != 0; p = obj_link(p)) { + my_bytes_allocd += lb; + if ((word)my_bytes_allocd >= HBLKSIZE) { + *opp = obj_link(p); + obj_link(p) = 0; + break; + } + } + GC_bytes_allocd += my_bytes_allocd; + goto out; + } + /* Next try to allocate a new block worth of objects of this size. */ + { + struct hblk *h = GC_allochblk(lb, k, 0); + if (h != 0) { + if (IS_UNCOLLECTABLE(k)) GC_set_hdr_marks(HDR(h)); + GC_bytes_allocd += HBLKSIZE - HBLKSIZE % lb; +# ifdef PARALLEL_MARK + if (GC_parallel) { + GC_acquire_mark_lock(); + ++ GC_fl_builder_count; + UNLOCK(); + GC_release_mark_lock(); + + op = GC_build_fl(h, lw, + (ok -> ok_init || GC_debugging_started), 0); + + *result = op; + GC_acquire_mark_lock(); + -- GC_fl_builder_count; + if (GC_fl_builder_count == 0) GC_notify_all_builder(); + GC_release_mark_lock(); + (void) GC_clear_stack(0); + return; + } +# endif + op = GC_build_fl(h, lw, (ok -> ok_init || GC_debugging_started), 0); + goto out; + } + } + + /* As a last attempt, try allocating a single object. Note that */ + /* this may trigger a collection or expand the heap. */ + op = GC_generic_malloc_inner(lb, k); + if (0 != op) obj_link(op) = 0; + + out: + *result = op; + UNLOCK(); + (void) GC_clear_stack(0); +} + +/* Note that the "atomic" version of this would be unsafe, since the */ +/* links would not be seen by the collector. */ +GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_many(size_t lb) +{ + void *result; + + /* Add EXTRA_BYTES and round up to a multiple of a granule. */ + lb = SIZET_SAT_ADD(lb, EXTRA_BYTES + GRANULE_BYTES - 1) + & ~(GRANULE_BYTES - 1); + + GC_generic_malloc_many(lb, NORMAL, &result); + return result; +} + +#include + +/* Debug version is tricky and currently missing. */ +GC_API GC_ATTR_MALLOC void * GC_CALL GC_memalign(size_t align, size_t lb) +{ + size_t new_lb; + size_t offset; + ptr_t result; + + if (align <= GRANULE_BYTES) return GC_malloc(lb); + if (align >= HBLKSIZE/2 || lb >= HBLKSIZE/2) { + if (align > HBLKSIZE) { + return (*GC_get_oom_fn())(LONG_MAX-1024); /* Fail */ + } + return GC_malloc(lb <= HBLKSIZE? HBLKSIZE : lb); + /* Will be HBLKSIZE aligned. */ + } + /* We could also try to make sure that the real rounded-up object size */ + /* is a multiple of align. That would be correct up to HBLKSIZE. */ + new_lb = SIZET_SAT_ADD(lb, align - 1); + result = GC_malloc(new_lb); + /* It is OK not to check result for NULL as in that case */ + /* GC_memalign returns NULL too since (0 + 0 % align) is 0. */ + offset = (word)result % align; + if (offset != 0) { + offset = align - offset; + if (!GC_all_interior_pointers) { + GC_STATIC_ASSERT(VALID_OFFSET_SZ <= HBLKSIZE); + GC_ASSERT(offset < VALID_OFFSET_SZ); + GC_register_displacement(offset); + } + } + result = (void *) ((ptr_t)result + offset); + GC_ASSERT((word)result % align == 0); + return result; +} + +/* This one exists largely to redirect posix_memalign for leaks finding. */ +GC_API int GC_CALL GC_posix_memalign(void **memptr, size_t align, size_t lb) +{ + /* Check alignment properly. */ + if (((align - 1) & align) != 0 || align < sizeof(void *)) { +# ifdef MSWINCE + return ERROR_INVALID_PARAMETER; +# else + return EINVAL; +# endif + } + + if ((*memptr = GC_memalign(align, lb)) == NULL) { +# ifdef MSWINCE + return ERROR_NOT_ENOUGH_MEMORY; +# else + return ENOMEM; +# endif + } + return 0; +} + +/* provide a version of strdup() that uses the collector to allocate the + copy of the string */ +GC_API GC_ATTR_MALLOC char * GC_CALL GC_strdup(const char *s) +{ + char *copy; + size_t lb; + if (s == NULL) return NULL; + lb = strlen(s) + 1; + if ((copy = GC_malloc_atomic(lb)) == NULL) { +# ifndef MSWINCE + errno = ENOMEM; +# endif + return NULL; + } + BCOPY(s, copy, lb); + return copy; +} + +GC_API GC_ATTR_MALLOC char * GC_CALL GC_strndup(const char *str, size_t size) +{ + char *copy; + size_t len = strlen(str); /* str is expected to be non-NULL */ + if (len > size) + len = size; + copy = GC_malloc_atomic(len + 1); + if (copy == NULL) { +# ifndef MSWINCE + errno = ENOMEM; +# endif + return NULL; + } + BCOPY(str, copy, len); + copy[len] = '\0'; + return copy; +} + +#ifdef GC_REQUIRE_WCSDUP +# include /* for wcslen() */ + + GC_API GC_ATTR_MALLOC wchar_t * GC_CALL GC_wcsdup(const wchar_t *str) + { + size_t lb = (wcslen(str) + 1) * sizeof(wchar_t); + wchar_t *copy = GC_malloc_atomic(lb); + if (copy == NULL) { +# ifndef MSWINCE + errno = ENOMEM; +# endif + return NULL; + } + BCOPY(str, copy, lb); + return copy; + } +#endif /* GC_REQUIRE_WCSDUP */ diff --git a/mark.c b/mark.c new file mode 100644 index 0000000..4b143dd --- /dev/null +++ b/mark.c @@ -0,0 +1,2034 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. + * Copyright (c) 2000 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +#if defined(__MINGW32__) && !defined(__MINGW_EXCPT_DEFINE_PSDK) \ + && defined(__i386__) /* cannot use macros from gcconfig.h */ + /* Otherwise EXCEPTION_REGISTRATION type declaration from winnt.h */ + /* might be used. That declaration has "handler" callback with NTAPI */ + /* attribute. The proper type (with "handler" field compatible with */ + /* GC mark_ex_handler) is declared in excpt.h. The given macro is */ + /* defined before any system header include. */ +# define __MINGW_EXCPT_DEFINE_PSDK 1 +#endif + +#include "private/gc_pmark.h" + +#include + +#if defined(MSWIN32) && defined(__GNUC__) +# include +#endif + +/* Make arguments appear live to compiler. Put here to minimize the */ +/* risk of inlining. Used to minimize junk left in registers. */ +GC_ATTR_NOINLINE +void GC_noop6(word arg1 GC_ATTR_UNUSED, word arg2 GC_ATTR_UNUSED, + word arg3 GC_ATTR_UNUSED, word arg4 GC_ATTR_UNUSED, + word arg5 GC_ATTR_UNUSED, word arg6 GC_ATTR_UNUSED) +{ + /* Avoid GC_noop6 calls to be optimized away. */ +# if defined(GC_PTHREADS) && !defined(GC_WIN32_THREADS) \ + || defined(PARALLEL_MARK) + AO_compiler_barrier(); /* to serve as a special side-effect */ +# else + GC_noop1(0); +# endif +} + +/* Single argument version, robust against whole program analysis. */ +volatile word GC_noop_sink; +GC_API void GC_CALL GC_noop1(word x) +{ + GC_noop_sink = x; +} + +/* mark_proc GC_mark_procs[MAX_MARK_PROCS] = {0} -- declared in gc_priv.h */ + +GC_INNER unsigned GC_n_mark_procs = GC_RESERVED_MARK_PROCS; + +/* Initialize GC_obj_kinds properly and standard free lists properly. */ +/* This must be done statically since they may be accessed before */ +/* GC_init is called. */ +/* It's done here, since we need to deal with mark descriptors. */ +GC_INNER struct obj_kind GC_obj_kinds[MAXOBJKINDS] = { +/* PTRFREE */ { &GC_aobjfreelist[0], 0 /* filled in dynamically */, + /* 0 | */ GC_DS_LENGTH, FALSE, FALSE + /*, */ OK_DISCLAIM_INITZ }, +/* NORMAL */ { &GC_objfreelist[0], 0, + /* 0 | */ GC_DS_LENGTH, + /* adjusted in GC_init for EXTRA_BYTES */ + TRUE /* add length to descr */, TRUE + /*, */ OK_DISCLAIM_INITZ }, +/* UNCOLLECTABLE */ + { &GC_uobjfreelist[0], 0, + /* 0 | */ GC_DS_LENGTH, TRUE /* add length to descr */, TRUE + /*, */ OK_DISCLAIM_INITZ }, +# ifdef GC_ATOMIC_UNCOLLECTABLE + { &GC_auobjfreelist[0], 0, + /* 0 | */ GC_DS_LENGTH, FALSE /* add length to descr */, FALSE + /*, */ OK_DISCLAIM_INITZ }, +# endif +# ifdef STUBBORN_ALLOC + { (void **)&GC_sobjfreelist[0], 0, + /* 0 | */ GC_DS_LENGTH, TRUE /* add length to descr */, TRUE + /*, */ OK_DISCLAIM_INITZ }, +# endif +}; + +# ifdef STUBBORN_ALLOC +# define GC_N_KINDS_INITIAL_VALUE (STUBBORN+1) +# else +# define GC_N_KINDS_INITIAL_VALUE STUBBORN +# endif + +GC_INNER unsigned GC_n_kinds = GC_N_KINDS_INITIAL_VALUE; + +# ifndef INITIAL_MARK_STACK_SIZE +# define INITIAL_MARK_STACK_SIZE (1*HBLKSIZE) + /* INITIAL_MARK_STACK_SIZE * sizeof(mse) should be a */ + /* multiple of HBLKSIZE. */ + /* The incremental collector actually likes a larger */ + /* size, since it wants to push all marked dirty */ + /* objects before marking anything new. Currently we */ + /* let it grow dynamically. */ +# endif + +STATIC word GC_n_rescuing_pages = 0; + /* Number of dirty pages we marked from */ + /* excludes ptrfree pages, etc. */ + +GC_INNER size_t GC_mark_stack_size = 0; + +#ifdef PARALLEL_MARK + STATIC volatile AO_t GC_first_nonempty = 0; + /* Lowest entry on mark stack */ + /* that may be nonempty. */ + /* Updated only by initiating */ + /* thread. */ +#endif + +GC_INNER mark_state_t GC_mark_state = MS_NONE; + +GC_INNER GC_bool GC_mark_stack_too_small = FALSE; + +static struct hblk * scan_ptr; + +STATIC GC_bool GC_objects_are_marked = FALSE; + /* Are there collectible marked objects in the heap? */ + +/* Is a collection in progress? Note that this can return true in the */ +/* nonincremental case, if a collection has been abandoned and the */ +/* mark state is now MS_INVALID. */ +GC_INNER GC_bool GC_collection_in_progress(void) +{ + return(GC_mark_state != MS_NONE); +} + +/* clear all mark bits in the header */ +GC_INNER void GC_clear_hdr_marks(hdr *hhdr) +{ + size_t last_bit = FINAL_MARK_BIT(hhdr -> hb_sz); + BZERO(hhdr -> hb_marks, sizeof(hhdr->hb_marks)); + set_mark_bit_from_hdr(hhdr, last_bit); + hhdr -> hb_n_marks = 0; +} + +/* Set all mark bits in the header. Used for uncollectible blocks. */ +GC_INNER void GC_set_hdr_marks(hdr *hhdr) +{ + unsigned i; + size_t sz = hhdr -> hb_sz; + unsigned n_marks = (unsigned)FINAL_MARK_BIT(sz); + +# ifdef USE_MARK_BYTES + for (i = 0; i <= n_marks; i += (unsigned)MARK_BIT_OFFSET(sz)) { + hhdr -> hb_marks[i] = 1; + } +# else + for (i = 0; i < divWORDSZ(n_marks + WORDSZ); ++i) { + hhdr -> hb_marks[i] = ONES; + } +# endif +# ifdef MARK_BIT_PER_OBJ + hhdr -> hb_n_marks = n_marks; +# else + hhdr -> hb_n_marks = HBLK_OBJS(sz); +# endif +} + +/* + * Clear all mark bits associated with block h. + */ +static void clear_marks_for_block(struct hblk *h, word dummy GC_ATTR_UNUSED) +{ + register hdr * hhdr = HDR(h); + + if (IS_UNCOLLECTABLE(hhdr -> hb_obj_kind)) return; + /* Mark bit for these is cleared only once the object is */ + /* explicitly deallocated. This either frees the block, or */ + /* the bit is cleared once the object is on the free list. */ + GC_clear_hdr_marks(hhdr); +} + +/* Slow but general routines for setting/clearing/asking about mark bits */ +GC_API void GC_CALL GC_set_mark_bit(const void *p) +{ + struct hblk *h = HBLKPTR(p); + hdr * hhdr = HDR(h); + word bit_no = MARK_BIT_NO((ptr_t)p - (ptr_t)h, hhdr -> hb_sz); + + if (!mark_bit_from_hdr(hhdr, bit_no)) { + set_mark_bit_from_hdr(hhdr, bit_no); + ++hhdr -> hb_n_marks; + } +} + +GC_API void GC_CALL GC_clear_mark_bit(const void *p) +{ + struct hblk *h = HBLKPTR(p); + hdr * hhdr = HDR(h); + word bit_no = MARK_BIT_NO((ptr_t)p - (ptr_t)h, hhdr -> hb_sz); + + if (mark_bit_from_hdr(hhdr, bit_no)) { + size_t n_marks = hhdr -> hb_n_marks; + + GC_ASSERT(n_marks != 0); + clear_mark_bit_from_hdr(hhdr, bit_no); + n_marks--; +# ifdef PARALLEL_MARK + if (n_marks != 0 || !GC_parallel) + hhdr -> hb_n_marks = n_marks; + /* Don't decrement to zero. The counts are approximate due to */ + /* concurrency issues, but we need to ensure that a count of */ + /* zero implies an empty block. */ +# else + hhdr -> hb_n_marks = n_marks; +# endif + } +} + +GC_API int GC_CALL GC_is_marked(const void *p) +{ + struct hblk *h = HBLKPTR(p); + hdr * hhdr = HDR(h); + word bit_no = MARK_BIT_NO((ptr_t)p - (ptr_t)h, hhdr -> hb_sz); + + return (int)mark_bit_from_hdr(hhdr, bit_no); /* 0 or 1 */ +} + +/* + * Clear mark bits in all allocated heap blocks. This invalidates + * the marker invariant, and sets GC_mark_state to reflect this. + * (This implicitly starts marking to reestablish the invariant.) + */ +GC_INNER void GC_clear_marks(void) +{ + GC_apply_to_all_blocks(clear_marks_for_block, (word)0); + GC_objects_are_marked = FALSE; + GC_mark_state = MS_INVALID; + scan_ptr = 0; +} + +#ifdef CHECKSUMS + void GC_check_dirty(void); +#endif + +/* Initiate a garbage collection. Initiates a full collection if the */ +/* mark state is invalid. */ +GC_INNER void GC_initiate_gc(void) +{ +# ifndef GC_DISABLE_INCREMENTAL + if (GC_incremental) { + GC_read_dirty(); + } +# endif +# ifdef STUBBORN_ALLOC + GC_read_changed(); +# endif +# ifdef CHECKSUMS + if (GC_incremental) GC_check_dirty(); +# endif + GC_n_rescuing_pages = 0; + if (GC_mark_state == MS_NONE) { + GC_mark_state = MS_PUSH_RESCUERS; + } else if (GC_mark_state != MS_INVALID) { + ABORT("Unexpected state"); + } /* else this is really a full collection, and mark */ + /* bits are invalid. */ + scan_ptr = 0; +} + +#ifdef PARALLEL_MARK + STATIC void GC_do_parallel_mark(void); /* initiate parallel marking. */ +#endif /* PARALLEL_MARK */ + +#ifdef GC_DISABLE_INCREMENTAL +# define GC_push_next_marked_dirty(h) GC_push_next_marked(h) +#else + STATIC struct hblk * GC_push_next_marked_dirty(struct hblk *h); + /* Invoke GC_push_marked on next dirty block above h. */ + /* Return a pointer just past the end of this block. */ +#endif /* !GC_DISABLE_INCREMENTAL */ +STATIC struct hblk * GC_push_next_marked(struct hblk *h); + /* Ditto, but also mark from clean pages. */ +STATIC struct hblk * GC_push_next_marked_uncollectable(struct hblk *h); + /* Ditto, but mark only from uncollectible pages. */ + +static void alloc_mark_stack(size_t); + +/* Perform a small amount of marking. */ +/* We try to touch roughly a page of memory. */ +/* Return TRUE if we just finished a mark phase. */ +/* Cold_gc_frame is an address inside a GC frame that */ +/* remains valid until all marking is complete. */ +/* A zero value indicates that it's OK to miss some */ +/* register values. */ +/* We hold the allocation lock. In the case of */ +/* incremental collection, the world may not be stopped.*/ +#ifdef WRAP_MARK_SOME + /* For win32, this is called after we establish a structured */ + /* exception handler, in case Windows unmaps one of our root */ + /* segments. See below. In either case, we acquire the */ + /* allocator lock long before we get here. */ + STATIC GC_bool GC_mark_some_inner(ptr_t cold_gc_frame) +#else + GC_INNER GC_bool GC_mark_some(ptr_t cold_gc_frame) +#endif +{ + switch(GC_mark_state) { + case MS_NONE: + break; + + case MS_PUSH_RESCUERS: + if ((word)GC_mark_stack_top + >= (word)(GC_mark_stack_limit - INITIAL_MARK_STACK_SIZE/2)) { + /* Go ahead and mark, even though that might cause us to */ + /* see more marked dirty objects later on. Avoid this */ + /* in the future. */ + GC_mark_stack_too_small = TRUE; + MARK_FROM_MARK_STACK(); + break; + } else { + scan_ptr = GC_push_next_marked_dirty(scan_ptr); + if (scan_ptr == 0) { + GC_COND_LOG_PRINTF("Marked from %lu dirty pages\n", + (unsigned long)GC_n_rescuing_pages); + GC_push_roots(FALSE, cold_gc_frame); + GC_objects_are_marked = TRUE; + if (GC_mark_state != MS_INVALID) { + GC_mark_state = MS_ROOTS_PUSHED; + } + } + } + break; + + case MS_PUSH_UNCOLLECTABLE: + if ((word)GC_mark_stack_top + >= (word)(GC_mark_stack + GC_mark_stack_size/4)) { +# ifdef PARALLEL_MARK + /* Avoid this, since we don't parallelize the marker */ + /* here. */ + if (GC_parallel) GC_mark_stack_too_small = TRUE; +# endif + MARK_FROM_MARK_STACK(); + break; + } else { + scan_ptr = GC_push_next_marked_uncollectable(scan_ptr); + if (scan_ptr == 0) { + GC_push_roots(TRUE, cold_gc_frame); + GC_objects_are_marked = TRUE; + if (GC_mark_state != MS_INVALID) { + GC_mark_state = MS_ROOTS_PUSHED; + } + } + } + break; + + case MS_ROOTS_PUSHED: +# ifdef PARALLEL_MARK + /* In the incremental GC case, this currently doesn't */ + /* quite do the right thing, since it runs to */ + /* completion. On the other hand, starting a */ + /* parallel marker is expensive, so perhaps it is */ + /* the right thing? */ + /* Eventually, incremental marking should run */ + /* asynchronously in multiple threads, without grabbing */ + /* the allocation lock. */ + if (GC_parallel) { + GC_do_parallel_mark(); + GC_ASSERT((word)GC_mark_stack_top < (word)GC_first_nonempty); + GC_mark_stack_top = GC_mark_stack - 1; + if (GC_mark_stack_too_small) { + alloc_mark_stack(2*GC_mark_stack_size); + } + if (GC_mark_state == MS_ROOTS_PUSHED) { + GC_mark_state = MS_NONE; + return(TRUE); + } + break; + } +# endif + if ((word)GC_mark_stack_top >= (word)GC_mark_stack) { + MARK_FROM_MARK_STACK(); + break; + } else { + GC_mark_state = MS_NONE; + if (GC_mark_stack_too_small) { + alloc_mark_stack(2*GC_mark_stack_size); + } + return(TRUE); + } + + case MS_INVALID: + case MS_PARTIALLY_INVALID: + if (!GC_objects_are_marked) { + GC_mark_state = MS_PUSH_UNCOLLECTABLE; + break; + } + if ((word)GC_mark_stack_top >= (word)GC_mark_stack) { + MARK_FROM_MARK_STACK(); + break; + } + if (scan_ptr == 0 && GC_mark_state == MS_INVALID) { + /* About to start a heap scan for marked objects. */ + /* Mark stack is empty. OK to reallocate. */ + if (GC_mark_stack_too_small) { + alloc_mark_stack(2*GC_mark_stack_size); + } + GC_mark_state = MS_PARTIALLY_INVALID; + } + scan_ptr = GC_push_next_marked(scan_ptr); + if (scan_ptr == 0 && GC_mark_state == MS_PARTIALLY_INVALID) { + GC_push_roots(TRUE, cold_gc_frame); + GC_objects_are_marked = TRUE; + if (GC_mark_state != MS_INVALID) { + GC_mark_state = MS_ROOTS_PUSHED; + } + } + break; + + default: + ABORT("GC_mark_some: bad state"); + } + return(FALSE); +} + +#ifdef WRAP_MARK_SOME + +# if (defined(MSWIN32) || defined(MSWINCE)) && defined(__GNUC__) + + typedef struct { + EXCEPTION_REGISTRATION ex_reg; + void *alt_path; + } ext_ex_regn; + + static EXCEPTION_DISPOSITION mark_ex_handler( + struct _EXCEPTION_RECORD *ex_rec, + void *est_frame, + struct _CONTEXT *context, + void *disp_ctxt GC_ATTR_UNUSED) + { + if (ex_rec->ExceptionCode == STATUS_ACCESS_VIOLATION) { + ext_ex_regn *xer = (ext_ex_regn *)est_frame; + + /* Unwind from the inner function assuming the standard */ + /* function prologue. */ + /* Assumes code has not been compiled with */ + /* -fomit-frame-pointer. */ + context->Esp = context->Ebp; + context->Ebp = *((DWORD *)context->Esp); + context->Esp = context->Esp - 8; + + /* Resume execution at the "real" handler within the */ + /* wrapper function. */ + context->Eip = (DWORD )(xer->alt_path); + + return ExceptionContinueExecution; + + } else { + return ExceptionContinueSearch; + } + } +# endif /* __GNUC__ && MSWIN32 */ + +#if defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS) + GC_INNER GC_bool GC_started_thread_while_stopped(void); + /* In win32_threads.c. Did we invalidate mark phase with an */ + /* unexpected thread start? */ +#endif + + GC_INNER GC_bool GC_mark_some(ptr_t cold_gc_frame) + { + GC_bool ret_val; + +# if defined(MSWIN32) || defined(MSWINCE) +# ifndef __GNUC__ + /* Windows 98 appears to asynchronously create and remove */ + /* writable memory mappings, for reasons we haven't yet */ + /* understood. Since we look for writable regions to */ + /* determine the root set, we may try to mark from an */ + /* address range that disappeared since we started the */ + /* collection. Thus we have to recover from faults here. */ + /* This code does not appear to be necessary for Windows */ + /* 95/NT/2000+. Note that this code should never generate */ + /* an incremental GC write fault. */ + /* This code seems to be necessary for WinCE (at least in */ + /* the case we'd decide to add MEM_PRIVATE sections to */ + /* data roots in GC_register_dynamic_libraries()). */ + /* It's conceivable that this is the same issue with */ + /* terminating threads that we see with Linux and */ + /* USE_PROC_FOR_LIBRARIES. */ + + __try { + ret_val = GC_mark_some_inner(cold_gc_frame); + } __except (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ? + EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH) { + goto handle_ex; + } +# if defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS) + /* With DllMain-based thread tracking, a thread may have */ + /* started while we were marking. This is logically equivalent */ + /* to the exception case; our results are invalid and we have */ + /* to start over. This cannot be prevented since we can't */ + /* block in DllMain. */ + if (GC_started_thread_while_stopped()) goto handle_ex; +# endif + rm_handler: + return ret_val; + +# else /* __GNUC__ */ + + /* Manually install an exception handler since GCC does */ + /* not yet support Structured Exception Handling (SEH) on */ + /* Win32. */ + + ext_ex_regn er; + +# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7) \ + || __clang_major__ > 3 \ + || (__clang_major__ == 3 && __clang_minor__ >= 3) +# pragma GCC diagnostic push + /* Suppress "taking the address of label is non-standard" warning. */ +# if defined(__clang__) || __GNUC__ > 6 \ + || (__GNUC__ == 6 && __GNUC_MINOR__ >= 4) +# pragma GCC diagnostic ignored "-Wpedantic" +# else + /* GCC before ~4.8 does not accept "-Wpedantic" quietly. */ +# pragma GCC diagnostic ignored "-pedantic" +# endif + er.alt_path = &&handle_ex; +# pragma GCC diagnostic pop +# else /* pragma diagnostic is not supported */ + er.alt_path = &&handle_ex; +# endif + er.ex_reg.handler = mark_ex_handler; + __asm__ __volatile__ ("movl %%fs:0, %0" : "=r" (er.ex_reg.prev)); + __asm__ __volatile__ ("movl %0, %%fs:0" : : "r" (&er)); + ret_val = GC_mark_some_inner(cold_gc_frame); + /* Prevent GCC from considering the following code unreachable */ + /* and thus eliminating it. */ + if (er.alt_path == 0) + goto handle_ex; +# if defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS) + if (GC_started_thread_while_stopped()) + goto handle_ex; +# endif + rm_handler: + /* Uninstall the exception handler */ + __asm__ __volatile__ ("mov %0, %%fs:0" : : "r" (er.ex_reg.prev)); + return ret_val; + +# endif /* __GNUC__ */ +# else /* !MSWIN32 */ + /* Here we are handling the case in which /proc is used for root */ + /* finding, and we have threads. We may find a stack for a */ + /* thread that is in the process of exiting, and disappears */ + /* while we are marking it. This seems extremely difficult to */ + /* avoid otherwise. */ + if (GC_incremental) { + WARN("Incremental GC incompatible with /proc roots\n", 0); + /* I'm not sure if this could still work ... */ + } + GC_setup_temporary_fault_handler(); + if(SETJMP(GC_jmp_buf) != 0) goto handle_ex; + ret_val = GC_mark_some_inner(cold_gc_frame); + rm_handler: + GC_reset_fault_handler(); + return ret_val; + +# endif /* !MSWIN32 */ + +handle_ex: + /* Exception handler starts here for all cases. */ + { + static word warned_gc_no; + + /* Warn about it at most once per collection. */ + if (warned_gc_no != GC_gc_no) { + warned_gc_no = GC_gc_no; + WARN("Caught ACCESS_VIOLATION in marker;" + " memory mapping disappeared\n", 0); + } + } + /* We have bad roots on the stack. Discard mark stack. */ + /* Rescan from marked objects. Redetermine roots. */ +# ifdef REGISTER_LIBRARIES_EARLY + START_WORLD(); + GC_cond_register_dynamic_libraries(); + STOP_WORLD(); +# endif + GC_invalidate_mark_state(); + scan_ptr = 0; + + ret_val = FALSE; + goto rm_handler; /* Back to platform-specific code. */ + } +#endif /* WRAP_MARK_SOME */ + +GC_INNER void GC_invalidate_mark_state(void) +{ + GC_mark_state = MS_INVALID; + GC_mark_stack_top = GC_mark_stack-1; +} + +GC_INNER mse * GC_signal_mark_stack_overflow(mse *msp) +{ + GC_mark_state = MS_INVALID; +# ifdef PARALLEL_MARK + /* We are using a local_mark_stack in parallel mode, so */ + /* do not signal the global mark stack to be resized. */ + /* That will be done if required in GC_return_mark_stack. */ + if (!GC_parallel) + GC_mark_stack_too_small = TRUE; +# else + GC_mark_stack_too_small = TRUE; +# endif + GC_COND_LOG_PRINTF("Mark stack overflow; current size = %lu entries\n", + (unsigned long)GC_mark_stack_size); + return(msp - GC_MARK_STACK_DISCARDS); +} + +/* + * Mark objects pointed to by the regions described by + * mark stack entries between mark_stack and mark_stack_top, + * inclusive. Assumes the upper limit of a mark stack entry + * is never 0. A mark stack entry never has size 0. + * We try to traverse on the order of a hblk of memory before we return. + * Caller is responsible for calling this until the mark stack is empty. + * Note that this is the most performance critical routine in the + * collector. Hence it contains all sorts of ugly hacks to speed + * things up. In particular, we avoid procedure calls on the common + * path, we take advantage of peculiarities of the mark descriptor + * encoding, we optionally maintain a cache for the block address to + * header mapping, we prefetch when an object is "grayed", etc. + */ +GC_ATTR_NO_SANITIZE_ADDR GC_ATTR_NO_SANITIZE_MEMORY +GC_INNER mse * GC_mark_from(mse *mark_stack_top, mse *mark_stack, + mse *mark_stack_limit) +{ + signed_word credit = HBLKSIZE; /* Remaining credit for marking work */ + ptr_t current_p; /* Pointer to current candidate ptr. */ + word current; /* Candidate pointer. */ + ptr_t limit = 0; /* (Incl) limit of current candidate range. */ + word descr; + ptr_t greatest_ha = GC_greatest_plausible_heap_addr; + ptr_t least_ha = GC_least_plausible_heap_addr; + DECLARE_HDR_CACHE; + +# define SPLIT_RANGE_WORDS 128 /* Must be power of 2. */ + + GC_objects_are_marked = TRUE; + INIT_HDR_CACHE; +# ifdef OS2 /* Use untweaked version to circumvent compiler problem */ + while ((word)mark_stack_top >= (word)mark_stack && credit >= 0) +# else + while ((((ptr_t)mark_stack_top - (ptr_t)mark_stack) | credit) >= 0) +# endif + { + current_p = mark_stack_top -> mse_start; + descr = mark_stack_top -> mse_descr.w; + retry: + /* current_p and descr describe the current object. */ + /* *mark_stack_top is vacant. */ + /* The following is 0 only for small objects described by a simple */ + /* length descriptor. For many applications this is the common */ + /* case, so we try to detect it quickly. */ + if (descr & ((~(WORDS_TO_BYTES(SPLIT_RANGE_WORDS) - 1)) | GC_DS_TAGS)) { + word tag = descr & GC_DS_TAGS; + + GC_STATIC_ASSERT(GC_DS_TAGS == 0x3); + switch(tag) { + case GC_DS_LENGTH: + /* Large length. */ + /* Process part of the range to avoid pushing too much on the */ + /* stack. */ + GC_ASSERT(descr < (word)GC_greatest_plausible_heap_addr + - (word)GC_least_plausible_heap_addr + || (word)(current_p + descr) + <= (word)GC_least_plausible_heap_addr + || (word)current_p >= (word)GC_greatest_plausible_heap_addr); +# ifdef PARALLEL_MARK +# define SHARE_BYTES 2048 + if (descr > SHARE_BYTES && GC_parallel + && (word)mark_stack_top < (word)(mark_stack_limit - 1)) { + word new_size = (descr/2) & ~(word)(sizeof(word)-1); + + mark_stack_top -> mse_start = current_p; + mark_stack_top -> mse_descr.w = new_size + sizeof(word); + /* makes sure we handle */ + /* misaligned pointers. */ + mark_stack_top++; +# ifdef ENABLE_TRACE + if ((word)GC_trace_addr >= (word)current_p + && (word)GC_trace_addr < (word)(current_p + descr)) { + GC_log_printf("GC #%u: large section; start %p, len %lu," + " splitting (parallel) at %p\n", + (unsigned)GC_gc_no, (void *)current_p, + (unsigned long)descr, + (void *)(current_p + new_size)); + } +# endif + current_p += new_size; + descr -= new_size; + goto retry; + } +# endif /* PARALLEL_MARK */ + mark_stack_top -> mse_start = + limit = current_p + WORDS_TO_BYTES(SPLIT_RANGE_WORDS-1); + mark_stack_top -> mse_descr.w = + descr - WORDS_TO_BYTES(SPLIT_RANGE_WORDS-1); +# ifdef ENABLE_TRACE + if ((word)GC_trace_addr >= (word)current_p + && (word)GC_trace_addr < (word)(current_p + descr)) { + GC_log_printf("GC #%u: large section; start %p, len %lu," + " splitting at %p\n", + (unsigned)GC_gc_no, (void *)current_p, + (unsigned long)descr, (void *)limit); + } +# endif + /* Make sure that pointers overlapping the two ranges are */ + /* considered. */ + limit += sizeof(word) - ALIGNMENT; + break; + case GC_DS_BITMAP: + mark_stack_top--; +# ifdef ENABLE_TRACE + if ((word)GC_trace_addr >= (word)current_p + && (word)GC_trace_addr < (word)(current_p + + WORDS_TO_BYTES(WORDSZ-2))) { + GC_log_printf("GC #%u: tracing from %p bitmap descr %lu\n", + (unsigned)GC_gc_no, (void *)current_p, + (unsigned long)descr); + } +# endif /* ENABLE_TRACE */ + descr &= ~GC_DS_TAGS; + credit -= WORDS_TO_BYTES(WORDSZ/2); /* guess */ + while (descr != 0) { + if ((descr & SIGNB) != 0) { + current = *(word *)current_p; + FIXUP_POINTER(current); + if (current >= (word)least_ha && current < (word)greatest_ha) { + PREFETCH((ptr_t)current); +# ifdef ENABLE_TRACE + if (GC_trace_addr == current_p) { + GC_log_printf("GC #%u: considering(3) %p -> %p\n", + (unsigned)GC_gc_no, (void *)current_p, + (void *)current); + } +# endif /* ENABLE_TRACE */ + PUSH_CONTENTS((ptr_t)current, mark_stack_top, + mark_stack_limit, current_p); + } + } + descr <<= 1; + current_p += sizeof(word); + } + continue; + case GC_DS_PROC: + mark_stack_top--; +# ifdef ENABLE_TRACE + if ((word)GC_trace_addr >= (word)current_p + && GC_base(current_p) != 0 + && GC_base(current_p) == GC_base(GC_trace_addr)) { + GC_log_printf("GC #%u: tracing from %p, proc descr %lu\n", + (unsigned)GC_gc_no, (void *)current_p, + (unsigned long)descr); + } +# endif /* ENABLE_TRACE */ + credit -= GC_PROC_BYTES; + mark_stack_top = (*PROC(descr))((word *)current_p, mark_stack_top, + mark_stack_limit, ENV(descr)); + continue; + case GC_DS_PER_OBJECT: + if ((signed_word)descr >= 0) { + /* Descriptor is in the object. */ + descr = *(word *)(current_p + descr - GC_DS_PER_OBJECT); + } else { + /* Descriptor is in type descriptor pointed to by first */ + /* word in object. */ + ptr_t type_descr = *(ptr_t *)current_p; + /* type_descr is either a valid pointer to the descriptor */ + /* structure, or this object was on a free list. */ + /* If it was anything but the last object on the free list, */ + /* we will misinterpret the next object on the free list as */ + /* the type descriptor, and get a 0 GC descriptor, which */ + /* is ideal. Unfortunately, we need to check for the last */ + /* object case explicitly. */ + if (0 == type_descr) { + /* Rarely executed. */ + mark_stack_top--; + continue; + } + descr = *(word *)(type_descr + - ((signed_word)descr + (GC_INDIR_PER_OBJ_BIAS + - GC_DS_PER_OBJECT))); + } + if (0 == descr) { + /* Can happen either because we generated a 0 descriptor */ + /* or we saw a pointer to a free object. */ + mark_stack_top--; + continue; + } + goto retry; + } + } else /* Small object with length descriptor */ { + mark_stack_top--; +# ifndef SMALL_CONFIG + if (descr < sizeof(word)) + continue; +# endif +# ifdef ENABLE_TRACE + if ((word)GC_trace_addr >= (word)current_p + && (word)GC_trace_addr < (word)(current_p + descr)) { + GC_log_printf("GC #%u: small object; start %p, len %lu\n", + (unsigned)GC_gc_no, (void *)current_p, + (unsigned long)descr); + } +# endif + limit = current_p + (word)descr; + } + /* The simple case in which we're scanning a range. */ + GC_ASSERT(!((word)current_p & (ALIGNMENT-1))); + credit -= limit - current_p; + limit -= sizeof(word); + { +# define PREF_DIST 4 + +# ifndef SMALL_CONFIG + word deferred; + + /* Try to prefetch the next pointer to be examined ASAP. */ + /* Empirically, this also seems to help slightly without */ + /* prefetches, at least on linux/X86. Presumably this loop */ + /* ends up with less register pressure, and gcc thus ends up */ + /* generating slightly better code. Overall gcc code quality */ + /* for this loop is still not great. */ + for(;;) { + PREFETCH(limit - PREF_DIST*CACHE_LINE_SIZE); + GC_ASSERT((word)limit >= (word)current_p); + deferred = *(word *)limit; + FIXUP_POINTER(deferred); + limit -= ALIGNMENT; + if (deferred >= (word)least_ha && deferred < (word)greatest_ha) { + PREFETCH((ptr_t)deferred); + break; + } + if ((word)current_p > (word)limit) goto next_object; + /* Unroll once, so we don't do too many of the prefetches */ + /* based on limit. */ + deferred = *(word *)limit; + FIXUP_POINTER(deferred); + limit -= ALIGNMENT; + if (deferred >= (word)least_ha && deferred < (word)greatest_ha) { + PREFETCH((ptr_t)deferred); + break; + } + if ((word)current_p > (word)limit) goto next_object; + } +# endif + + while ((word)current_p <= (word)limit) { + /* Empirically, unrolling this loop doesn't help a lot. */ + /* Since PUSH_CONTENTS expands to a lot of code, */ + /* we don't. */ + current = *(word *)current_p; + FIXUP_POINTER(current); + PREFETCH(current_p + PREF_DIST*CACHE_LINE_SIZE); + if (current >= (word)least_ha && current < (word)greatest_ha) { + /* Prefetch the contents of the object we just pushed. It's */ + /* likely we will need them soon. */ + PREFETCH((ptr_t)current); +# ifdef ENABLE_TRACE + if (GC_trace_addr == current_p) { + GC_log_printf("GC #%u: considering(1) %p -> %p\n", + (unsigned)GC_gc_no, (void *)current_p, + (void *)current); + } +# endif /* ENABLE_TRACE */ + PUSH_CONTENTS((ptr_t)current, mark_stack_top, + mark_stack_limit, current_p); + } + current_p += ALIGNMENT; + } + +# ifndef SMALL_CONFIG + /* We still need to mark the entry we previously prefetched. */ + /* We already know that it passes the preliminary pointer */ + /* validity test. */ +# ifdef ENABLE_TRACE + if (GC_trace_addr == current_p) { + GC_log_printf("GC #%u: considering(2) %p -> %p\n", + (unsigned)GC_gc_no, (void *)current_p, + (void *)deferred); + } +# endif /* ENABLE_TRACE */ + PUSH_CONTENTS((ptr_t)deferred, mark_stack_top, + mark_stack_limit, current_p); + next_object:; +# endif + } + } + return mark_stack_top; +} + +#ifdef PARALLEL_MARK + +STATIC GC_bool GC_help_wanted = FALSE; /* Protected by mark lock */ +STATIC unsigned GC_helper_count = 0; /* Number of running helpers. */ + /* Protected by mark lock */ +STATIC unsigned GC_active_count = 0; /* Number of active helpers. */ + /* Protected by mark lock */ + /* May increase and decrease */ + /* within each mark cycle. But */ + /* once it returns to 0, it */ + /* stays zero for the cycle. */ + +GC_INNER word GC_mark_no = 0; + +#ifdef LINT2 +# define LOCAL_MARK_STACK_SIZE (HBLKSIZE / 8) +#else +# define LOCAL_MARK_STACK_SIZE HBLKSIZE + /* Under normal circumstances, this is big enough to guarantee */ + /* we don't overflow half of it in a single call to */ + /* GC_mark_from. */ +#endif + +/* Wait all markers to finish initialization (i.e. store */ +/* marker_[b]sp, marker_mach_threads, GC_marker_Id). */ +GC_INNER void GC_wait_for_markers_init(void) +{ + signed_word count; + + if (GC_markers_m1 == 0) + return; + + /* Reuse marker lock and builders count to synchronize */ + /* marker threads startup. */ + GC_acquire_mark_lock(); + GC_fl_builder_count += GC_markers_m1; + count = GC_fl_builder_count; + GC_release_mark_lock(); + if (count != 0) { + GC_ASSERT(count > 0); + GC_wait_for_reclaim(); + } +} + +/* Steal mark stack entries starting at mse low into mark stack local */ +/* until we either steal mse high, or we have max entries. */ +/* Return a pointer to the top of the local mark stack. */ +/* *next is replaced by a pointer to the next unscanned mark stack */ +/* entry. */ +STATIC mse * GC_steal_mark_stack(mse * low, mse * high, mse * local, + unsigned max, mse **next) +{ + mse *p; + mse *top = local - 1; + unsigned i = 0; + + GC_ASSERT((word)high >= (word)(low - 1) + && (word)(high - low + 1) <= GC_mark_stack_size); + for (p = low; (word)p <= (word)high && i <= max; ++p) { + word descr = (word)AO_load(&p->mse_descr.ao); + if (descr != 0) { + /* Must be ordered after read of descr: */ + AO_store_release_write(&p->mse_descr.ao, 0); + /* More than one thread may get this entry, but that's only */ + /* a minor performance problem. */ + ++top; + top -> mse_descr.w = descr; + top -> mse_start = p -> mse_start; + GC_ASSERT((descr & GC_DS_TAGS) != GC_DS_LENGTH + || descr < (word)GC_greatest_plausible_heap_addr + - (word)GC_least_plausible_heap_addr + || (word)(p->mse_start + descr) + <= (word)GC_least_plausible_heap_addr + || (word)p->mse_start + >= (word)GC_greatest_plausible_heap_addr); + /* If this is a big object, count it as */ + /* size/256 + 1 objects. */ + ++i; + if ((descr & GC_DS_TAGS) == GC_DS_LENGTH) i += (int)(descr >> 8); + } + } + *next = p; + return top; +} + +/* Copy back a local mark stack. */ +/* low and high are inclusive bounds. */ +STATIC void GC_return_mark_stack(mse * low, mse * high) +{ + mse * my_top; + mse * my_start; + size_t stack_size; + + if ((word)high < (word)low) return; + stack_size = high - low + 1; + GC_acquire_mark_lock(); + my_top = GC_mark_stack_top; /* Concurrent modification impossible. */ + my_start = my_top + 1; + if ((word)(my_start - GC_mark_stack + stack_size) + > (word)GC_mark_stack_size) { + GC_COND_LOG_PRINTF("No room to copy back mark stack\n"); + GC_mark_state = MS_INVALID; + GC_mark_stack_too_small = TRUE; + /* We drop the local mark stack. We'll fix things later. */ + } else { + BCOPY(low, my_start, stack_size * sizeof(mse)); + GC_ASSERT((mse *)AO_load((volatile AO_t *)(&GC_mark_stack_top)) + == my_top); + AO_store_release_write((volatile AO_t *)(&GC_mark_stack_top), + (AO_t)(my_top + stack_size)); + /* Ensures visibility of previously written stack contents. */ + } + GC_release_mark_lock(); + GC_notify_all_marker(); +} + +/* This function is only called when the local */ +/* and the main mark stacks are both empty. */ +static GC_bool has_inactive_helpers(void) +{ + GC_bool res; + + GC_acquire_mark_lock(); + res = GC_active_count < GC_helper_count; + GC_release_mark_lock(); + return res; +} + +/* Mark from the local mark stack. */ +/* On return, the local mark stack is empty. */ +/* But this may be achieved by copying the */ +/* local mark stack back into the global one. */ +/* We do not hold the mark lock. */ +STATIC void GC_do_local_mark(mse *local_mark_stack, mse *local_top) +{ + unsigned n; +# define N_LOCAL_ITERS 1 + + for (;;) { + for (n = 0; n < N_LOCAL_ITERS; ++n) { + local_top = GC_mark_from(local_top, local_mark_stack, + local_mark_stack + LOCAL_MARK_STACK_SIZE); + if ((word)local_top < (word)local_mark_stack) return; + if ((word)(local_top - local_mark_stack) + >= LOCAL_MARK_STACK_SIZE / 2) { + GC_return_mark_stack(local_mark_stack, local_top); + return; + } + } + if ((word)AO_load((volatile AO_t *)&GC_mark_stack_top) + < (word)AO_load(&GC_first_nonempty) + && (word)local_top > (word)(local_mark_stack + 1) + && has_inactive_helpers()) { + /* Try to share the load, since the main stack is empty, */ + /* and helper threads are waiting for a refill. */ + /* The entries near the bottom of the stack are likely */ + /* to require more work. Thus we return those, even though */ + /* it's harder. */ + mse * new_bottom = local_mark_stack + + (local_top - local_mark_stack)/2; + GC_ASSERT((word)new_bottom > (word)local_mark_stack + && (word)new_bottom < (word)local_top); + GC_return_mark_stack(local_mark_stack, new_bottom - 1); + memmove(local_mark_stack, new_bottom, + (local_top - new_bottom + 1) * sizeof(mse)); + local_top -= (new_bottom - local_mark_stack); + } + } +} + +#define ENTRIES_TO_GET 5 + +/* Mark using the local mark stack until the global mark stack is empty */ +/* and there are no active workers. Update GC_first_nonempty to reflect */ +/* progress. Caller holds the mark lock. */ +/* Caller has already incremented GC_helper_count. We decrement it, */ +/* and maintain GC_active_count. */ +STATIC void GC_mark_local(mse *local_mark_stack, int id) +{ + mse * my_first_nonempty; + + GC_active_count++; + my_first_nonempty = (mse *)AO_load(&GC_first_nonempty); + GC_ASSERT((word)GC_mark_stack <= (word)my_first_nonempty); + GC_ASSERT((word)my_first_nonempty + <= (word)AO_load((volatile AO_t *)&GC_mark_stack_top) + sizeof(mse)); + GC_VERBOSE_LOG_PRINTF("Starting mark helper %d\n", id); + GC_release_mark_lock(); + for (;;) { + size_t n_on_stack; + unsigned n_to_get; + mse * my_top; + mse * local_top; + mse * global_first_nonempty = (mse *)AO_load(&GC_first_nonempty); + + GC_ASSERT((word)my_first_nonempty >= (word)GC_mark_stack && + (word)my_first_nonempty <= + (word)AO_load((volatile AO_t *)&GC_mark_stack_top) + + sizeof(mse)); + GC_ASSERT((word)global_first_nonempty >= (word)GC_mark_stack); + if ((word)my_first_nonempty < (word)global_first_nonempty) { + my_first_nonempty = global_first_nonempty; + } else if ((word)global_first_nonempty < (word)my_first_nonempty) { + (void)AO_compare_and_swap(&GC_first_nonempty, + (AO_t)global_first_nonempty, + (AO_t)my_first_nonempty); + /* If this fails, we just go ahead, without updating */ + /* GC_first_nonempty. */ + } + /* Perhaps we should also update GC_first_nonempty, if it */ + /* is less. But that would require using atomic updates. */ + my_top = (mse *)AO_load_acquire((volatile AO_t *)(&GC_mark_stack_top)); + if ((word)my_top < (word)my_first_nonempty) { + GC_acquire_mark_lock(); + my_top = GC_mark_stack_top; + /* Asynchronous modification impossible here, */ + /* since we hold mark lock. */ + n_on_stack = my_top - my_first_nonempty + 1; + if (0 == n_on_stack) { + GC_active_count--; + GC_ASSERT(GC_active_count <= GC_helper_count); + /* Other markers may redeposit objects */ + /* on the stack. */ + if (0 == GC_active_count) GC_notify_all_marker(); + while (GC_active_count > 0 + && (word)AO_load(&GC_first_nonempty) + > (word)GC_mark_stack_top) { + /* We will be notified if either GC_active_count */ + /* reaches zero, or if more objects are pushed on */ + /* the global mark stack. */ + GC_wait_marker(); + } + if (GC_active_count == 0 + && (word)AO_load(&GC_first_nonempty) + > (word)GC_mark_stack_top) { + GC_bool need_to_notify = FALSE; + /* The above conditions can't be falsified while we */ + /* hold the mark lock, since neither */ + /* GC_active_count nor GC_mark_stack_top can */ + /* change. GC_first_nonempty can only be */ + /* incremented asynchronously. Thus we know that */ + /* both conditions actually held simultaneously. */ + GC_helper_count--; + if (0 == GC_helper_count) need_to_notify = TRUE; + GC_VERBOSE_LOG_PRINTF("Finished mark helper %d\n", id); + if (need_to_notify) GC_notify_all_marker(); + return; + } + /* else there's something on the stack again, or */ + /* another helper may push something. */ + GC_active_count++; + GC_ASSERT(GC_active_count > 0); + GC_release_mark_lock(); + continue; + } else { + GC_release_mark_lock(); + } + } else { + n_on_stack = my_top - my_first_nonempty + 1; + } + n_to_get = ENTRIES_TO_GET; + if (n_on_stack < 2 * ENTRIES_TO_GET) n_to_get = 1; + local_top = GC_steal_mark_stack(my_first_nonempty, my_top, + local_mark_stack, n_to_get, + &my_first_nonempty); + GC_ASSERT((word)my_first_nonempty >= (word)GC_mark_stack && + (word)my_first_nonempty <= + (word)AO_load((volatile AO_t *)&GC_mark_stack_top) + + sizeof(mse)); + GC_do_local_mark(local_mark_stack, local_top); + } +} + +/* Perform Parallel mark. */ +/* We hold the GC lock, not the mark lock. */ +/* Currently runs until the mark stack is */ +/* empty. */ +STATIC void GC_do_parallel_mark(void) +{ + mse local_mark_stack[LOCAL_MARK_STACK_SIZE]; + /* Note: local_mark_stack is quite big (up to 128 KiB). */ + + GC_acquire_mark_lock(); + GC_ASSERT(I_HOLD_LOCK()); + /* This could be a GC_ASSERT, but it seems safer to keep it on */ + /* all the time, especially since it's cheap. */ + if (GC_help_wanted || GC_active_count != 0 || GC_helper_count != 0) + ABORT("Tried to start parallel mark in bad state"); + GC_VERBOSE_LOG_PRINTF("Starting marking for mark phase number %lu\n", + (unsigned long)GC_mark_no); + GC_first_nonempty = (AO_t)GC_mark_stack; + GC_active_count = 0; + GC_helper_count = 1; + GC_help_wanted = TRUE; + GC_notify_all_marker(); + /* Wake up potential helpers. */ + GC_mark_local(local_mark_stack, 0); + GC_help_wanted = FALSE; + /* Done; clean up. */ + while (GC_helper_count > 0) { + GC_wait_marker(); + } + /* GC_helper_count cannot be incremented while GC_help_wanted == FALSE */ + GC_VERBOSE_LOG_PRINTF("Finished marking for mark phase number %lu\n", + (unsigned long)GC_mark_no); + GC_mark_no++; + GC_release_mark_lock(); + GC_notify_all_marker(); +} + + +/* Try to help out the marker, if it's running. */ +/* We do not hold the GC lock, but the requestor does. */ +/* And we hold the mark lock. */ +GC_INNER void GC_help_marker(word my_mark_no) +{ +# define my_id my_id_mse.mse_descr.w + mse my_id_mse; /* align local_mark_stack explicitly */ + mse local_mark_stack[LOCAL_MARK_STACK_SIZE]; + /* Note: local_mark_stack is quite big (up to 128 KiB). */ + + GC_ASSERT(GC_parallel); + while (GC_mark_no < my_mark_no + || (!GC_help_wanted && GC_mark_no == my_mark_no)) { + GC_wait_marker(); + } + my_id = GC_helper_count; + if (GC_mark_no != my_mark_no || my_id > (unsigned)GC_markers_m1) { + /* Second test is useful only if original threads can also */ + /* act as helpers. Under Linux they can't. */ + return; + } + GC_helper_count = (unsigned)my_id + 1; + GC_mark_local(local_mark_stack, (int)my_id); + /* GC_mark_local decrements GC_helper_count. */ +# undef my_id +} + +#endif /* PARALLEL_MARK */ + +GC_INNER void GC_scratch_recycle_inner(void *ptr, size_t bytes) +{ + if (ptr != NULL) { + size_t page_offset = (word)ptr & (GC_page_size - 1); + size_t displ = 0; + size_t recycled_bytes; + + GC_ASSERT(bytes != 0); + GC_ASSERT(GC_page_size != 0); + /* TODO: Assert correct memory flags if GWW_VDB */ + if (page_offset != 0) + displ = GC_page_size - page_offset; + recycled_bytes = (bytes - displ) & ~(GC_page_size - 1); + GC_COND_LOG_PRINTF("Recycle %lu/%lu scratch-allocated bytes at %p\n", + (unsigned long)recycled_bytes, (unsigned long)bytes, + ptr); + if (recycled_bytes > 0) + GC_add_to_heap((struct hblk *)((word)ptr + displ), recycled_bytes); + } +} + +/* Allocate or reallocate space for mark stack of size n entries. */ +/* May silently fail. */ +static void alloc_mark_stack(size_t n) +{ + mse * new_stack = (mse *)GC_scratch_alloc(n * sizeof(struct GC_ms_entry)); +# ifdef GWW_VDB + /* Don't recycle a stack segment obtained with the wrong flags. */ + /* Win32 GetWriteWatch requires the right kind of memory. */ + static GC_bool GC_incremental_at_stack_alloc = FALSE; + GC_bool recycle_old = (!GC_incremental || GC_incremental_at_stack_alloc); + + GC_incremental_at_stack_alloc = GC_incremental; +# else +# define recycle_old TRUE +# endif + + GC_mark_stack_too_small = FALSE; + if (GC_mark_stack != NULL) { + if (new_stack != 0) { + if (recycle_old) { + /* Recycle old space */ + GC_scratch_recycle_inner(GC_mark_stack, + GC_mark_stack_size * sizeof(struct GC_ms_entry)); + } + GC_mark_stack = new_stack; + GC_mark_stack_size = n; + /* FIXME: Do we need some way to reset GC_mark_stack_size? */ + GC_mark_stack_limit = new_stack + n; + GC_COND_LOG_PRINTF("Grew mark stack to %lu frames\n", + (unsigned long)GC_mark_stack_size); + } else { + WARN("Failed to grow mark stack to %" WARN_PRIdPTR " frames\n", n); + } + } else { + if (new_stack == 0) { + GC_err_printf("No space for mark stack\n"); + EXIT(); + } + GC_mark_stack = new_stack; + GC_mark_stack_size = n; + GC_mark_stack_limit = new_stack + n; + } + GC_mark_stack_top = GC_mark_stack-1; +} + +GC_INNER void GC_mark_init(void) +{ + alloc_mark_stack(INITIAL_MARK_STACK_SIZE); +} + +/* + * Push all locations between b and t onto the mark stack. + * b is the first location to be checked. t is one past the last + * location to be checked. + * Should only be used if there is no possibility of mark stack + * overflow. + */ +GC_API void GC_CALL GC_push_all(char *bottom, char *top) +{ + register word length; + + bottom = (char *)(((word) bottom + ALIGNMENT-1) & ~(ALIGNMENT-1)); + top = (char *)(((word) top) & ~(ALIGNMENT-1)); + if ((word)bottom >= (word)top) return; + + GC_mark_stack_top++; + if ((word)GC_mark_stack_top >= (word)GC_mark_stack_limit) { + ABORT("Unexpected mark stack overflow"); + } + length = top - bottom; +# if GC_DS_TAGS > ALIGNMENT - 1 + length += GC_DS_TAGS; + length &= ~GC_DS_TAGS; +# endif + GC_mark_stack_top -> mse_start = bottom; + GC_mark_stack_top -> mse_descr.w = length; +} + +#ifndef GC_DISABLE_INCREMENTAL + + /* Analogous to the above, but push only those pages h with */ + /* dirty_fn(h) != 0. We use GC_push_all to actually push the block. */ + /* Used both to selectively push dirty pages, or to push a block in */ + /* piecemeal fashion, to allow for more marking concurrency. */ + /* Will not overflow mark stack if GC_push_all pushes a small fixed */ + /* number of entries. (This is invoked only if GC_push_all pushes */ + /* a single entry, or if it marks each object before pushing it, thus */ + /* ensuring progress in the event of a stack overflow.) */ + STATIC void GC_push_selected(ptr_t bottom, ptr_t top, + GC_bool (*dirty_fn)(struct hblk *)) + { + struct hblk * h; + + bottom = (ptr_t)(((word) bottom + ALIGNMENT-1) & ~(ALIGNMENT-1)); + top = (ptr_t)(((word) top) & ~(ALIGNMENT-1)); + if ((word)bottom >= (word)top) return; + + h = HBLKPTR(bottom + HBLKSIZE); + if ((word)top <= (word)h) { + if ((*dirty_fn)(h-1)) { + GC_push_all(bottom, top); + } + return; + } + if ((*dirty_fn)(h-1)) { + GC_push_all(bottom, (ptr_t)h); + } + + while ((word)(h+1) <= (word)top) { + if ((*dirty_fn)(h)) { + if ((word)(GC_mark_stack_top - GC_mark_stack) + > 3 * GC_mark_stack_size / 4) { + /* Danger of mark stack overflow */ + GC_push_all((ptr_t)h, top); + return; + } else { + GC_push_all((ptr_t)h, (ptr_t)(h+1)); + } + } + h++; + } + + if ((ptr_t)h != top && (*dirty_fn)(h)) { + GC_push_all((ptr_t)h, top); + } + if ((word)GC_mark_stack_top >= (word)GC_mark_stack_limit) { + ABORT("Unexpected mark stack overflow"); + } + } + + GC_API void GC_CALL GC_push_conditional(char *bottom, char *top, int all) + { + if (!all) { + GC_push_selected((ptr_t)bottom, (ptr_t)top, GC_page_was_dirty); + } else { +# ifdef PROC_VDB + if (GC_incremental) { + /* Pages that were never dirtied cannot contain pointers. */ + GC_push_selected((ptr_t)bottom, (ptr_t)top, GC_page_was_ever_dirty); + } else +# endif + /* else */ { + GC_push_all(bottom, top); + } + } + } +#else + GC_API void GC_CALL GC_push_conditional(char *bottom, char *top, + int all GC_ATTR_UNUSED) + { + GC_push_all(bottom, top); + } +#endif /* GC_DISABLE_INCREMENTAL */ + +#if defined(MSWIN32) || defined(MSWINCE) + void __cdecl GC_push_one(word p) +#else + void GC_push_one(word p) +#endif +{ + GC_PUSH_ONE_STACK(p, MARKED_FROM_REGISTER); +} + +GC_API struct GC_ms_entry * GC_CALL GC_mark_and_push(void *obj, + mse *mark_stack_ptr, + mse *mark_stack_limit, + void ** src GC_ATTR_UNUSED) +{ + hdr * hhdr; + + PREFETCH(obj); + GET_HDR(obj, hhdr); + if ((EXPECT(IS_FORWARDING_ADDR_OR_NIL(hhdr), FALSE) + && (!GC_all_interior_pointers + || NULL == (hhdr = GC_find_header(GC_base(obj))))) + || EXPECT(HBLK_IS_FREE(hhdr), FALSE)) { + GC_ADD_TO_BLACK_LIST_NORMAL(obj, (ptr_t)src); + return mark_stack_ptr; + } + + PUSH_CONTENTS_HDR(obj, mark_stack_ptr /* modified */, mark_stack_limit, + (ptr_t)src, hhdr, TRUE); + return mark_stack_ptr; +} + +#if defined(MANUAL_VDB) && defined(THREADS) + void GC_dirty(ptr_t p); +#endif + +/* Mark and push (i.e. gray) a single object p onto the main */ +/* mark stack. Consider p to be valid if it is an interior */ +/* pointer. */ +/* The object p has passed a preliminary pointer validity */ +/* test, but we do not definitely know whether it is valid. */ +/* Mark bits are NOT atomically updated. Thus this must be the */ +/* only thread setting them. */ +# if defined(PRINT_BLACK_LIST) || defined(KEEP_BACK_PTRS) + GC_INNER void GC_mark_and_push_stack(ptr_t p, ptr_t source) +# else + GC_INNER void GC_mark_and_push_stack(ptr_t p) +# define source ((ptr_t)0) +# endif +{ + hdr * hhdr; + ptr_t r = p; + + PREFETCH(p); + GET_HDR(p, hhdr); + if (EXPECT(IS_FORWARDING_ADDR_OR_NIL(hhdr), FALSE) + && (NULL == hhdr + || (r = GC_base(p)) == NULL + || (hhdr = HDR(r)) == NULL)) { + GC_ADD_TO_BLACK_LIST_STACK(p, source); + return; + } + if (EXPECT(HBLK_IS_FREE(hhdr), FALSE)) { + GC_ADD_TO_BLACK_LIST_NORMAL(p, source); + return; + } +# if defined(MANUAL_VDB) && defined(THREADS) + /* Pointer is on the stack. We may have dirtied the object */ + /* it points to, but not yet have called GC_dirty(); */ + GC_dirty(p); /* Implicitly affects entire object. */ +# endif + PUSH_CONTENTS_HDR(r, GC_mark_stack_top, GC_mark_stack_limit, + source, hhdr, FALSE); + /* We silently ignore pointers to near the end of a block, */ + /* which is very mildly suboptimal. */ + /* FIXME: We should probably add a header word to address */ + /* this. */ +} +# undef source + +#ifdef TRACE_BUF + +# ifndef TRACE_ENTRIES +# define TRACE_ENTRIES 1000 +# endif + +struct trace_entry { + char * kind; + word gc_no; + word bytes_allocd; + word arg1; + word arg2; +} GC_trace_buf[TRACE_ENTRIES]; + +int GC_trace_buf_ptr = 0; + +void GC_add_trace_entry(char *kind, word arg1, word arg2) +{ + GC_trace_buf[GC_trace_buf_ptr].kind = kind; + GC_trace_buf[GC_trace_buf_ptr].gc_no = GC_gc_no; + GC_trace_buf[GC_trace_buf_ptr].bytes_allocd = GC_bytes_allocd; + GC_trace_buf[GC_trace_buf_ptr].arg1 = arg1 ^ 0x80000000; + GC_trace_buf[GC_trace_buf_ptr].arg2 = arg2 ^ 0x80000000; + GC_trace_buf_ptr++; + if (GC_trace_buf_ptr >= TRACE_ENTRIES) GC_trace_buf_ptr = 0; +} + +GC_API void GC_CALL GC_print_trace_inner(word gc_no) +{ + int i; + + for (i = GC_trace_buf_ptr-1; i != GC_trace_buf_ptr; i--) { + struct trace_entry *p; + + if (i < 0) i = TRACE_ENTRIES-1; + p = GC_trace_buf + i; + if (p -> gc_no < gc_no || p -> kind == 0) { + return; + } + GC_printf("Trace:%s (gc:%u, bytes:%lu) 0x%lX, 0x%lX\n", + p -> kind, (unsigned)p -> gc_no, + (unsigned long)p -> bytes_allocd, + (long)p->arg1 ^ 0x80000000L, (long)p->arg2 ^ 0x80000000L); + } + GC_printf("Trace incomplete\n"); +} + +GC_API void GC_CALL GC_print_trace(word gc_no) +{ + DCL_LOCK_STATE; + + LOCK(); + GC_print_trace_inner(gc_no); + UNLOCK(); +} + +#endif /* TRACE_BUF */ + +/* + * A version of GC_push_all that treats all interior pointers as valid + * and scans the entire region immediately, in case the contents + * change. + */ +GC_ATTR_NO_SANITIZE_ADDR GC_ATTR_NO_SANITIZE_MEMORY +GC_API void GC_CALL GC_push_all_eager(char *bottom, char *top) +{ + word * b = (word *)(((word) bottom + ALIGNMENT-1) & ~(ALIGNMENT-1)); + word * t = (word *)(((word) top) & ~(ALIGNMENT-1)); + register word *p; + register word *lim; + register ptr_t greatest_ha = GC_greatest_plausible_heap_addr; + register ptr_t least_ha = GC_least_plausible_heap_addr; +# define GC_greatest_plausible_heap_addr greatest_ha +# define GC_least_plausible_heap_addr least_ha + + if (top == 0) return; + /* check all pointers in range and push if they appear */ + /* to be valid. */ + lim = t - 1 /* longword */; + for (p = b; (word)p <= (word)lim; + p = (word *)(((ptr_t)p) + ALIGNMENT)) { + register word q = *p; + GC_PUSH_ONE_STACK(q, p); + } +# undef GC_greatest_plausible_heap_addr +# undef GC_least_plausible_heap_addr +} + +GC_INNER void GC_push_all_stack(ptr_t bottom, ptr_t top) +{ +# if defined(THREADS) && defined(MPROTECT_VDB) + GC_push_all_eager(bottom, top); +# else +# ifndef NEED_FIXUP_POINTER + if (GC_all_interior_pointers) { + GC_push_all(bottom, top); + } else +# endif + /* else */ { + GC_push_all_eager(bottom, top); + } +# endif +} + +#if defined(WRAP_MARK_SOME) && defined(PARALLEL_MARK) + /* Similar to GC_push_conditional but scans the whole region immediately. */ + GC_ATTR_NO_SANITIZE_ADDR GC_ATTR_NO_SANITIZE_MEMORY + GC_INNER void GC_push_conditional_eager(ptr_t bottom, ptr_t top, + GC_bool all) + { + word * b = (word *)(((word) bottom + ALIGNMENT-1) & ~(ALIGNMENT-1)); + word * t = (word *)(((word) top) & ~(ALIGNMENT-1)); + register word *p; + register word *lim; + register ptr_t greatest_ha = GC_greatest_plausible_heap_addr; + register ptr_t least_ha = GC_least_plausible_heap_addr; +# define GC_greatest_plausible_heap_addr greatest_ha +# define GC_least_plausible_heap_addr least_ha + + if (top == NULL) + return; + (void)all; /* TODO: If !all then scan only dirty pages. */ + + lim = t - 1; + for (p = b; (word)p <= (word)lim; p = (word *)((ptr_t)p + ALIGNMENT)) { + register word q = *p; + GC_PUSH_ONE_HEAP(q, p, GC_mark_stack_top); + } +# undef GC_greatest_plausible_heap_addr +# undef GC_least_plausible_heap_addr + } +#endif /* WRAP_MARK_SOME && PARALLEL_MARK */ + +#if !defined(SMALL_CONFIG) && !defined(USE_MARK_BYTES) && \ + defined(MARK_BIT_PER_GRANULE) +# if GC_GRANULE_WORDS == 1 +# define USE_PUSH_MARKED_ACCELERATORS +# define PUSH_GRANULE(q) \ + do { \ + word qcontents = (q)[0]; \ + GC_PUSH_ONE_HEAP(qcontents, q, GC_mark_stack_top); \ + } while (0) +# elif GC_GRANULE_WORDS == 2 +# define USE_PUSH_MARKED_ACCELERATORS +# define PUSH_GRANULE(q) \ + do { \ + word qcontents = (q)[0]; \ + GC_PUSH_ONE_HEAP(qcontents, q, GC_mark_stack_top); \ + qcontents = (q)[1]; \ + GC_PUSH_ONE_HEAP(qcontents, (q)+1, GC_mark_stack_top); \ + } while (0) +# elif GC_GRANULE_WORDS == 4 +# define USE_PUSH_MARKED_ACCELERATORS +# define PUSH_GRANULE(q) \ + do { \ + word qcontents = (q)[0]; \ + GC_PUSH_ONE_HEAP(qcontents, q, GC_mark_stack_top); \ + qcontents = (q)[1]; \ + GC_PUSH_ONE_HEAP(qcontents, (q)+1, GC_mark_stack_top); \ + qcontents = (q)[2]; \ + GC_PUSH_ONE_HEAP(qcontents, (q)+2, GC_mark_stack_top); \ + qcontents = (q)[3]; \ + GC_PUSH_ONE_HEAP(qcontents, (q)+3, GC_mark_stack_top); \ + } while (0) +# endif +#endif /* !USE_MARK_BYTES && MARK_BIT_PER_GRANULE */ + +#ifdef USE_PUSH_MARKED_ACCELERATORS +/* Push all objects reachable from marked objects in the given block */ +/* containing objects of size 1 granule. */ +STATIC void GC_push_marked1(struct hblk *h, hdr *hhdr) +{ + word * mark_word_addr = &(hhdr->hb_marks[0]); + word *p; + word *plim; + + /* Allow registers to be used for some frequently accessed */ + /* global variables. Otherwise aliasing issues are likely */ + /* to prevent that. */ + ptr_t greatest_ha = GC_greatest_plausible_heap_addr; + ptr_t least_ha = GC_least_plausible_heap_addr; + mse * mark_stack_top = GC_mark_stack_top; + mse * mark_stack_limit = GC_mark_stack_limit; + +# undef GC_mark_stack_top +# undef GC_mark_stack_limit +# define GC_mark_stack_top mark_stack_top +# define GC_mark_stack_limit mark_stack_limit +# define GC_greatest_plausible_heap_addr greatest_ha +# define GC_least_plausible_heap_addr least_ha + + p = (word *)(h->hb_body); + plim = (word *)(((word)h) + HBLKSIZE); + + /* go through all words in block */ + while ((word)p < (word)plim) { + word mark_word = *mark_word_addr++; + word *q = p; + + while(mark_word != 0) { + if (mark_word & 1) { + PUSH_GRANULE(q); + } + q += GC_GRANULE_WORDS; + mark_word >>= 1; + } + p += WORDSZ*GC_GRANULE_WORDS; + } + +# undef GC_greatest_plausible_heap_addr +# undef GC_least_plausible_heap_addr +# undef GC_mark_stack_top +# undef GC_mark_stack_limit +# define GC_mark_stack_limit GC_arrays._mark_stack_limit +# define GC_mark_stack_top GC_arrays._mark_stack_top + GC_mark_stack_top = mark_stack_top; +} + + +#ifndef UNALIGNED_PTRS + +/* Push all objects reachable from marked objects in the given block */ +/* of size 2 (granules) objects. */ +STATIC void GC_push_marked2(struct hblk *h, hdr *hhdr) +{ + word * mark_word_addr = &(hhdr->hb_marks[0]); + word *p; + word *plim; + + ptr_t greatest_ha = GC_greatest_plausible_heap_addr; + ptr_t least_ha = GC_least_plausible_heap_addr; + mse * mark_stack_top = GC_mark_stack_top; + mse * mark_stack_limit = GC_mark_stack_limit; + +# undef GC_mark_stack_top +# undef GC_mark_stack_limit +# define GC_mark_stack_top mark_stack_top +# define GC_mark_stack_limit mark_stack_limit +# define GC_greatest_plausible_heap_addr greatest_ha +# define GC_least_plausible_heap_addr least_ha + + p = (word *)(h->hb_body); + plim = (word *)(((word)h) + HBLKSIZE); + + /* go through all words in block */ + while ((word)p < (word)plim) { + word mark_word = *mark_word_addr++; + word *q = p; + + while(mark_word != 0) { + if (mark_word & 1) { + PUSH_GRANULE(q); + PUSH_GRANULE(q + GC_GRANULE_WORDS); + } + q += 2 * GC_GRANULE_WORDS; + mark_word >>= 2; + } + p += WORDSZ*GC_GRANULE_WORDS; + } + +# undef GC_greatest_plausible_heap_addr +# undef GC_least_plausible_heap_addr +# undef GC_mark_stack_top +# undef GC_mark_stack_limit +# define GC_mark_stack_limit GC_arrays._mark_stack_limit +# define GC_mark_stack_top GC_arrays._mark_stack_top + GC_mark_stack_top = mark_stack_top; +} + +# if GC_GRANULE_WORDS < 4 +/* Push all objects reachable from marked objects in the given block */ +/* of size 4 (granules) objects. */ +/* There is a risk of mark stack overflow here. But we handle that. */ +/* And only unmarked objects get pushed, so it's not very likely. */ +STATIC void GC_push_marked4(struct hblk *h, hdr *hhdr) +{ + word * mark_word_addr = &(hhdr->hb_marks[0]); + word *p; + word *plim; + + ptr_t greatest_ha = GC_greatest_plausible_heap_addr; + ptr_t least_ha = GC_least_plausible_heap_addr; + mse * mark_stack_top = GC_mark_stack_top; + mse * mark_stack_limit = GC_mark_stack_limit; + +# undef GC_mark_stack_top +# undef GC_mark_stack_limit +# define GC_mark_stack_top mark_stack_top +# define GC_mark_stack_limit mark_stack_limit +# define GC_greatest_plausible_heap_addr greatest_ha +# define GC_least_plausible_heap_addr least_ha + + p = (word *)(h->hb_body); + plim = (word *)(((word)h) + HBLKSIZE); + + /* go through all words in block */ + while ((word)p < (word)plim) { + word mark_word = *mark_word_addr++; + word *q = p; + + while(mark_word != 0) { + if (mark_word & 1) { + PUSH_GRANULE(q); + PUSH_GRANULE(q + GC_GRANULE_WORDS); + PUSH_GRANULE(q + 2*GC_GRANULE_WORDS); + PUSH_GRANULE(q + 3*GC_GRANULE_WORDS); + } + q += 4 * GC_GRANULE_WORDS; + mark_word >>= 4; + } + p += WORDSZ*GC_GRANULE_WORDS; + } +# undef GC_greatest_plausible_heap_addr +# undef GC_least_plausible_heap_addr +# undef GC_mark_stack_top +# undef GC_mark_stack_limit +# define GC_mark_stack_limit GC_arrays._mark_stack_limit +# define GC_mark_stack_top GC_arrays._mark_stack_top + GC_mark_stack_top = mark_stack_top; +} + +#endif /* GC_GRANULE_WORDS < 4 */ + +#endif /* UNALIGNED_PTRS */ + +#endif /* USE_PUSH_MARKED_ACCELERATORS */ + +/* Push all objects reachable from marked objects in the given block */ +STATIC void GC_push_marked(struct hblk *h, hdr *hhdr) +{ + size_t sz = hhdr -> hb_sz; + word descr = hhdr -> hb_descr; + ptr_t p; + word bit_no; + ptr_t lim; + mse * GC_mark_stack_top_reg; + mse * mark_stack_limit = GC_mark_stack_limit; + + /* Some quick shortcuts: */ + if ((/* 0 | */ GC_DS_LENGTH) == descr) return; + if (GC_block_empty(hhdr)/* nothing marked */) return; + GC_n_rescuing_pages++; + GC_objects_are_marked = TRUE; + if (sz > MAXOBJBYTES) { + lim = h -> hb_body; + } else { + lim = (ptr_t)((word)(h + 1)->hb_body - sz); + } + + switch(BYTES_TO_GRANULES(sz)) { +# if defined(USE_PUSH_MARKED_ACCELERATORS) + case 1: + GC_push_marked1(h, hhdr); + break; +# if !defined(UNALIGNED_PTRS) + case 2: + GC_push_marked2(h, hhdr); + break; +# if GC_GRANULE_WORDS < 4 + case 4: + GC_push_marked4(h, hhdr); + break; +# endif +# endif +# endif + default: + GC_mark_stack_top_reg = GC_mark_stack_top; + for (p = h -> hb_body, bit_no = 0; (word)p <= (word)lim; + p += sz, bit_no += MARK_BIT_OFFSET(sz)) { + if (mark_bit_from_hdr(hhdr, bit_no)) { + /* Mark from fields inside the object */ + PUSH_OBJ(p, hhdr, GC_mark_stack_top_reg, mark_stack_limit); + } + } + GC_mark_stack_top = GC_mark_stack_top_reg; + } +} + +#ifdef ENABLE_DISCLAIM +/* Unconditionally mark from all objects which have not been reclaimed. */ +/* This is useful in order to retain pointers which are reachable from */ +/* the disclaim notifiers. */ +/* */ +/* To determine whether an object has been reclaimed, we require that */ +/* any live object has a non-zero as one of the two lowest bits of the */ +/* first word. On the other hand, a reclaimed object is a members of */ +/* free-lists, and thus contains a word-aligned next-pointer as the */ +/* first word. */ + STATIC void GC_push_unconditionally(struct hblk *h, hdr *hhdr) + { + size_t sz = hhdr -> hb_sz; + word descr = hhdr -> hb_descr; + ptr_t p; + ptr_t lim; + mse * GC_mark_stack_top_reg; + mse * mark_stack_limit = GC_mark_stack_limit; + + if ((/* 0 | */ GC_DS_LENGTH) == descr) + return; + + GC_n_rescuing_pages++; + GC_objects_are_marked = TRUE; + if (sz > MAXOBJBYTES) + lim = h -> hb_body; + else + lim = (ptr_t)((word)(h + 1)->hb_body - sz); + + GC_mark_stack_top_reg = GC_mark_stack_top; + for (p = h -> hb_body; (word)p <= (word)lim; p += sz) + if ((*(word *)p & 0x3) != 0) + PUSH_OBJ(p, hhdr, GC_mark_stack_top_reg, mark_stack_limit); + GC_mark_stack_top = GC_mark_stack_top_reg; + } +#endif /* ENABLE_DISCLAIM */ + +#ifndef GC_DISABLE_INCREMENTAL + /* Test whether any page in the given block is dirty. */ + STATIC GC_bool GC_block_was_dirty(struct hblk *h, hdr *hhdr) + { + size_t sz = hhdr -> hb_sz; + + if (sz <= MAXOBJBYTES) { + return(GC_page_was_dirty(h)); + } else { + ptr_t p = (ptr_t)h; + while ((word)p < (word)h + sz) { + if (GC_page_was_dirty((struct hblk *)p)) return(TRUE); + p += HBLKSIZE; + } + return(FALSE); + } + } +#endif /* GC_DISABLE_INCREMENTAL */ + +/* Similar to GC_push_marked, but skip over unallocated blocks */ +/* and return address of next plausible block. */ +STATIC struct hblk * GC_push_next_marked(struct hblk *h) +{ + hdr * hhdr = HDR(h); + + if (EXPECT(IS_FORWARDING_ADDR_OR_NIL(hhdr) || HBLK_IS_FREE(hhdr), FALSE)) { + h = GC_next_used_block(h); + if (h == 0) return(0); + hhdr = GC_find_header((ptr_t)h); + } else { +# ifdef LINT2 + if (NULL == h) ABORT("Bad HDR() definition"); +# endif + } + GC_push_marked(h, hhdr); + return(h + OBJ_SZ_TO_BLOCKS(hhdr -> hb_sz)); +} + +#ifndef GC_DISABLE_INCREMENTAL + /* Identical to above, but mark only from dirty pages */ + STATIC struct hblk * GC_push_next_marked_dirty(struct hblk *h) + { + hdr * hhdr = HDR(h); + + if (!GC_incremental) ABORT("Dirty bits not set up"); + for (;;) { + if (EXPECT(IS_FORWARDING_ADDR_OR_NIL(hhdr) + || HBLK_IS_FREE(hhdr), FALSE)) { + h = GC_next_used_block(h); + if (h == 0) return(0); + hhdr = GC_find_header((ptr_t)h); + } else { +# ifdef LINT2 + if (NULL == h) ABORT("Bad HDR() definition"); +# endif + } +# ifdef STUBBORN_ALLOC + if (hhdr -> hb_obj_kind == STUBBORN) { + if (GC_page_was_changed(h) && GC_block_was_dirty(h, hhdr)) + break; + } else +# endif + /* else */ { + if (GC_block_was_dirty(h, hhdr)) break; + } + h += OBJ_SZ_TO_BLOCKS(hhdr -> hb_sz); + hhdr = HDR(h); + } +# ifdef ENABLE_DISCLAIM + if ((hhdr -> hb_flags & MARK_UNCONDITIONALLY) != 0) { + GC_push_unconditionally(h, hhdr); + + /* Then we may ask, why not also add the MARK_UNCONDITIONALLY */ + /* case to GC_push_next_marked, which is also applied to */ + /* uncollectible blocks? But it seems to me that the function */ + /* does not need to scan uncollectible (and unconditionally */ + /* marked) blocks since those are already handled in the */ + /* MS_PUSH_UNCOLLECTABLE phase. */ + } else +# endif + /* else */ { + GC_push_marked(h, hhdr); + } + return(h + OBJ_SZ_TO_BLOCKS(hhdr -> hb_sz)); + } +#endif /* !GC_DISABLE_INCREMENTAL */ + +/* Similar to above, but for uncollectible pages. Needed since we */ +/* do not clear marks for such pages, even for full collections. */ +STATIC struct hblk * GC_push_next_marked_uncollectable(struct hblk *h) +{ + hdr * hhdr = HDR(h); + + for (;;) { + if (EXPECT(IS_FORWARDING_ADDR_OR_NIL(hhdr) + || HBLK_IS_FREE(hhdr), FALSE)) { + h = GC_next_used_block(h); + if (h == 0) return(0); + hhdr = GC_find_header((ptr_t)h); + } else { +# ifdef LINT2 + if (NULL == h) ABORT("Bad HDR() definition"); +# endif + } + if (hhdr -> hb_obj_kind == UNCOLLECTABLE) { + GC_push_marked(h, hhdr); + break; + } +# ifdef ENABLE_DISCLAIM + if ((hhdr -> hb_flags & MARK_UNCONDITIONALLY) != 0) { + GC_push_unconditionally(h, hhdr); + break; + } +# endif + h += OBJ_SZ_TO_BLOCKS(hhdr -> hb_sz); + hhdr = HDR(h); + } + return(h + OBJ_SZ_TO_BLOCKS(hhdr -> hb_sz)); +} diff --git a/mark_rts.c b/mark_rts.c new file mode 100644 index 0000000..650b7d0 --- /dev/null +++ b/mark_rts.c @@ -0,0 +1,853 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +#include + +/* Data structure for list of root sets. */ +/* We keep a hash table, so that we can filter out duplicate additions. */ +/* Under Win32, we need to do a better job of filtering overlaps, so */ +/* we resort to sequential search, and pay the price. */ +/* This is really declared in gc_priv.h: +struct roots { + ptr_t r_start; + ptr_t r_end; +# if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) + struct roots * r_next; +# endif + GC_bool r_tmp; + -- Delete before registering new dynamic libraries +}; + +struct roots GC_static_roots[MAX_ROOT_SETS]; +*/ + +int GC_no_dls = 0; /* Register dynamic library data segments. */ + +static int n_root_sets = 0; + /* GC_static_roots[0..n_root_sets) contains the valid root sets. */ + +#if !defined(NO_DEBUGGING) || defined(GC_ASSERTIONS) + /* Should return the same value as GC_root_size. */ + GC_INNER word GC_compute_root_size(void) + { + int i; + word size = 0; + + for (i = 0; i < n_root_sets; i++) { + size += GC_static_roots[i].r_end - GC_static_roots[i].r_start; + } + return size; + } +#endif /* !NO_DEBUGGING || GC_ASSERTIONS */ + +#if !defined(NO_DEBUGGING) + /* For debugging: */ + void GC_print_static_roots(void) + { + int i; + word size; + + for (i = 0; i < n_root_sets; i++) { + GC_printf("From %p to %p%s\n", + (void *)GC_static_roots[i].r_start, + (void *)GC_static_roots[i].r_end, + GC_static_roots[i].r_tmp ? " (temporary)" : ""); + } + GC_printf("GC_root_size: %lu\n", (unsigned long)GC_root_size); + + if ((size = GC_compute_root_size()) != GC_root_size) + GC_err_printf("GC_root_size incorrect!! Should be: %lu\n", + (unsigned long)size); + } +#endif /* !NO_DEBUGGING */ + +#ifndef THREADS + /* Primarily for debugging support: */ + /* Is the address p in one of the registered static root sections? */ + GC_INNER GC_bool GC_is_static_root(ptr_t p) + { + static int last_root_set = MAX_ROOT_SETS; + int i; + + if (last_root_set < n_root_sets + && (word)p >= (word)GC_static_roots[last_root_set].r_start + && (word)p < (word)GC_static_roots[last_root_set].r_end) + return(TRUE); + for (i = 0; i < n_root_sets; i++) { + if ((word)p >= (word)GC_static_roots[i].r_start + && (word)p < (word)GC_static_roots[i].r_end) { + last_root_set = i; + return(TRUE); + } + } + return(FALSE); + } +#endif /* !THREADS */ + +#if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) +/* +# define LOG_RT_SIZE 6 +# define RT_SIZE (1 << LOG_RT_SIZE) -- Power of 2, may be != MAX_ROOT_SETS + + struct roots * GC_root_index[RT_SIZE]; + -- Hash table header. Used only to check whether a range is + -- already present. + -- really defined in gc_priv.h +*/ + + GC_INLINE int rt_hash(ptr_t addr) + { + word result = (word) addr; +# if CPP_WORDSZ > 8*LOG_RT_SIZE + result ^= result >> 8*LOG_RT_SIZE; +# endif +# if CPP_WORDSZ > 4*LOG_RT_SIZE + result ^= result >> 4*LOG_RT_SIZE; +# endif + result ^= result >> 2*LOG_RT_SIZE; + result ^= result >> LOG_RT_SIZE; + result &= (RT_SIZE-1); + return(result); + } + + /* Is a range starting at b already in the table? If so return a */ + /* pointer to it, else NULL. */ + GC_INNER void * GC_roots_present(ptr_t b) + { + int h = rt_hash(b); + struct roots *p = GC_root_index[h]; + + while (p != 0) { + if (p -> r_start == (ptr_t)b) return(p); + p = p -> r_next; + } + return NULL; + } + + /* Add the given root structure to the index. */ + GC_INLINE void add_roots_to_index(struct roots *p) + { + int h = rt_hash(p -> r_start); + + p -> r_next = GC_root_index[h]; + GC_root_index[h] = p; + } +#endif /* !MSWIN32 && !MSWINCE && !CYGWIN32 */ + +GC_INNER word GC_root_size = 0; + +GC_API void GC_CALL GC_add_roots(void *b, void *e) +{ + DCL_LOCK_STATE; + + if (!EXPECT(GC_is_initialized, TRUE)) GC_init(); + LOCK(); + GC_add_roots_inner((ptr_t)b, (ptr_t)e, FALSE); + UNLOCK(); +} + + +/* Add [b,e) to the root set. Adding the same interval a second time */ +/* is a moderately fast no-op, and hence benign. We do not handle */ +/* different but overlapping intervals efficiently. (We do handle */ +/* them correctly.) */ +/* Tmp specifies that the interval may be deleted before */ +/* re-registering dynamic libraries. */ +void GC_add_roots_inner(ptr_t b, ptr_t e, GC_bool tmp) +{ + GC_ASSERT((word)b <= (word)e); + b = (ptr_t)(((word)b + (sizeof(word) - 1)) & ~(word)(sizeof(word) - 1)); + /* round b up to word boundary */ + e = (ptr_t)((word)e & ~(word)(sizeof(word) - 1)); + /* round e down to word boundary */ + if ((word)b >= (word)e) return; /* nothing to do */ + +# if defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32) + /* Spend the time to ensure that there are no overlapping */ + /* or adjacent intervals. */ + /* This could be done faster with e.g. a */ + /* balanced tree. But the execution time here is */ + /* virtually guaranteed to be dominated by the time it */ + /* takes to scan the roots. */ + { + register int i; + struct roots * old = NULL; /* initialized to prevent warning. */ + + for (i = 0; i < n_root_sets; i++) { + old = GC_static_roots + i; + if ((word)b <= (word)old->r_end + && (word)e >= (word)old->r_start) { + if ((word)b < (word)old->r_start) { + GC_root_size += old->r_start - b; + old -> r_start = b; + } + if ((word)e > (word)old->r_end) { + GC_root_size += e - old->r_end; + old -> r_end = e; + } + old -> r_tmp &= tmp; + break; + } + } + if (i < n_root_sets) { + /* merge other overlapping intervals */ + struct roots *other; + + for (i++; i < n_root_sets; i++) { + other = GC_static_roots + i; + b = other -> r_start; + e = other -> r_end; + if ((word)b <= (word)old->r_end + && (word)e >= (word)old->r_start) { + if ((word)b < (word)old->r_start) { + GC_root_size += old->r_start - b; + old -> r_start = b; + } + if ((word)e > (word)old->r_end) { + GC_root_size += e - old->r_end; + old -> r_end = e; + } + old -> r_tmp &= other -> r_tmp; + /* Delete this entry. */ + GC_root_size -= (other -> r_end - other -> r_start); + other -> r_start = GC_static_roots[n_root_sets-1].r_start; + other -> r_end = GC_static_roots[n_root_sets-1].r_end; + n_root_sets--; + } + } + return; + } + } +# else + { + struct roots * old = (struct roots *)GC_roots_present(b); + + if (old != 0) { + if ((word)e <= (word)old->r_end) + return; /* already there */ + /* else extend */ + GC_root_size += e - old -> r_end; + old -> r_end = e; + return; + } + } +# endif + if (n_root_sets == MAX_ROOT_SETS) { + ABORT("Too many root sets"); + } + +# ifdef DEBUG_ADD_DEL_ROOTS + GC_log_printf("Adding data root section %d: %p .. %p%s\n", + n_root_sets, (void *)b, (void *)e, + tmp ? " (temporary)" : ""); +# endif + GC_static_roots[n_root_sets].r_start = (ptr_t)b; + GC_static_roots[n_root_sets].r_end = (ptr_t)e; + GC_static_roots[n_root_sets].r_tmp = tmp; +# if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) + GC_static_roots[n_root_sets].r_next = 0; + add_roots_to_index(GC_static_roots + n_root_sets); +# endif + GC_root_size += e - b; + n_root_sets++; +} + +static GC_bool roots_were_cleared = FALSE; + +GC_API void GC_CALL GC_clear_roots(void) +{ + DCL_LOCK_STATE; + + if (!EXPECT(GC_is_initialized, TRUE)) GC_init(); + LOCK(); + roots_were_cleared = TRUE; + n_root_sets = 0; + GC_root_size = 0; +# if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) + BZERO(GC_root_index, RT_SIZE * sizeof(void *)); +# endif +# ifdef DEBUG_ADD_DEL_ROOTS + GC_log_printf("Clear all data root sections\n"); +# endif + UNLOCK(); +} + +/* Internal use only; lock held. */ +STATIC void GC_remove_root_at_pos(int i) +{ +# ifdef DEBUG_ADD_DEL_ROOTS + GC_log_printf("Remove data root section at %d: %p .. %p%s\n", + i, (void *)GC_static_roots[i].r_start, + (void *)GC_static_roots[i].r_end, + GC_static_roots[i].r_tmp ? " (temporary)" : ""); +# endif + GC_root_size -= (GC_static_roots[i].r_end - GC_static_roots[i].r_start); + GC_static_roots[i].r_start = GC_static_roots[n_root_sets-1].r_start; + GC_static_roots[i].r_end = GC_static_roots[n_root_sets-1].r_end; + GC_static_roots[i].r_tmp = GC_static_roots[n_root_sets-1].r_tmp; + n_root_sets--; +} + +#if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) + STATIC void GC_rebuild_root_index(void) + { + int i; + BZERO(GC_root_index, RT_SIZE * sizeof(void *)); + for (i = 0; i < n_root_sets; i++) + add_roots_to_index(GC_static_roots + i); + } +#endif + +#if defined(DYNAMIC_LOADING) || defined(MSWIN32) || defined(MSWINCE) \ + || defined(PCR) || defined(CYGWIN32) +/* Internal use only; lock held. */ +STATIC void GC_remove_tmp_roots(void) +{ + int i; + + for (i = 0; i < n_root_sets; ) { + if (GC_static_roots[i].r_tmp) { + GC_remove_root_at_pos(i); + } else { + i++; + } + } +# if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) + GC_rebuild_root_index(); +# endif +} +#endif + +#if !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) + STATIC void GC_remove_roots_inner(ptr_t b, ptr_t e); + + GC_API void GC_CALL GC_remove_roots(void *b, void *e) + { + DCL_LOCK_STATE; + + /* Quick check whether has nothing to do */ + if ((((word)b + (sizeof(word) - 1)) & ~(word)(sizeof(word) - 1)) >= + ((word)e & ~(word)(sizeof(word) - 1))) + return; + + LOCK(); + GC_remove_roots_inner((ptr_t)b, (ptr_t)e); + UNLOCK(); + } + + /* Should only be called when the lock is held */ + STATIC void GC_remove_roots_inner(ptr_t b, ptr_t e) + { + int i; + for (i = 0; i < n_root_sets; ) { + if ((word)GC_static_roots[i].r_start >= (word)b + && (word)GC_static_roots[i].r_end <= (word)e) { + GC_remove_root_at_pos(i); + } else { + i++; + } + } + GC_rebuild_root_index(); + } +#endif /* !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) */ + +#if !defined(NO_DEBUGGING) + /* For the debugging purpose only. */ + /* Workaround for the OS mapping and unmapping behind our back: */ + /* Is the address p in one of the temporary static root sections? */ + GC_API int GC_CALL GC_is_tmp_root(void *p) + { + static int last_root_set = MAX_ROOT_SETS; + register int i; + + if (last_root_set < n_root_sets + && (word)p >= (word)GC_static_roots[last_root_set].r_start + && (word)p < (word)GC_static_roots[last_root_set].r_end) + return GC_static_roots[last_root_set].r_tmp; + for (i = 0; i < n_root_sets; i++) { + if ((word)p >= (word)GC_static_roots[i].r_start + && (word)p < (word)GC_static_roots[i].r_end) { + last_root_set = i; + return GC_static_roots[i].r_tmp; + } + } + return(FALSE); + } +#endif /* !NO_DEBUGGING */ + +GC_INNER ptr_t GC_approx_sp(void) +{ + volatile word sp; +# if defined(__GNUC__) && (__GNUC__ >= 4) + sp = (word)__builtin_frame_address(0); +# else + sp = (word)&sp; +# endif + /* Also force stack to grow if necessary. Otherwise the */ + /* later accesses might cause the kernel to think we're */ + /* doing something wrong. */ + return((ptr_t)sp); +} + +/* + * Data structure for excluded static roots. + * Real declaration is in gc_priv.h. + +struct exclusion { + ptr_t e_start; + ptr_t e_end; +}; + +struct exclusion GC_excl_table[MAX_EXCLUSIONS]; + -- Array of exclusions, ascending + -- address order. +*/ + +STATIC size_t GC_excl_table_entries = 0;/* Number of entries in use. */ + +/* Return the first exclusion range that includes an address >= start_addr */ +/* Assumes the exclusion table contains at least one entry (namely the */ +/* GC data structures). */ +STATIC struct exclusion * GC_next_exclusion(ptr_t start_addr) +{ + size_t low = 0; + size_t high = GC_excl_table_entries - 1; + + while (high > low) { + size_t mid = (low + high) >> 1; + + /* low <= mid < high */ + if ((word) GC_excl_table[mid].e_end <= (word) start_addr) { + low = mid + 1; + } else { + high = mid; + } + } + if ((word) GC_excl_table[low].e_end <= (word) start_addr) return 0; + return GC_excl_table + low; +} + +/* Should only be called when the lock is held. The range boundaries */ +/* should be properly aligned and valid. */ +GC_INNER void GC_exclude_static_roots_inner(void *start, void *finish) +{ + struct exclusion * next; + size_t next_index; + + GC_ASSERT((word)start % sizeof(word) == 0); + GC_ASSERT((word)start < (word)finish); + + if (0 == GC_excl_table_entries) { + next = 0; + } else { + next = GC_next_exclusion(start); + } + if (0 != next) { + size_t i; + + if ((word)(next -> e_start) < (word) finish) { + /* incomplete error check. */ + ABORT("Exclusion ranges overlap"); + } + if ((word)(next -> e_start) == (word) finish) { + /* extend old range backwards */ + next -> e_start = (ptr_t)start; + return; + } + next_index = next - GC_excl_table; + for (i = GC_excl_table_entries; i > next_index; --i) { + GC_excl_table[i] = GC_excl_table[i-1]; + } + } else { + next_index = GC_excl_table_entries; + } + if (GC_excl_table_entries == MAX_EXCLUSIONS) ABORT("Too many exclusions"); + GC_excl_table[next_index].e_start = (ptr_t)start; + GC_excl_table[next_index].e_end = (ptr_t)finish; + ++GC_excl_table_entries; +} + +GC_API void GC_CALL GC_exclude_static_roots(void *b, void *e) +{ + DCL_LOCK_STATE; + + if (b == e) return; /* nothing to exclude? */ + + /* Round boundaries (in direction reverse to that of GC_add_roots). */ + b = (void *)((word)b & ~(word)(sizeof(word) - 1)); + e = (void *)(((word)e + (sizeof(word) - 1)) & ~(word)(sizeof(word) - 1)); + if (NULL == e) + e = (void *)(~(word)(sizeof(word) - 1)); /* handle overflow */ + + LOCK(); + GC_exclude_static_roots_inner(b, e); + UNLOCK(); +} + +#if defined(WRAP_MARK_SOME) && defined(PARALLEL_MARK) + /* GC_mark_local does not handle memory protection faults yet. So, */ + /* the static data regions are scanned immediately by GC_push_roots. */ + GC_INNER void GC_push_conditional_eager(ptr_t bottom, ptr_t top, + GC_bool all); +# define GC_PUSH_CONDITIONAL(b, t, all) \ + (GC_parallel \ + ? GC_push_conditional_eager(b, t, all) \ + : GC_push_conditional((ptr_t)(b), (ptr_t)(t), all)) +#elif defined(GC_DISABLE_INCREMENTAL) +# define GC_PUSH_CONDITIONAL(b, t, all) GC_push_all((ptr_t)(b), (ptr_t)(t)) +#else +# define GC_PUSH_CONDITIONAL(b, t, all) \ + GC_push_conditional((ptr_t)(b), (ptr_t)(t), all) + /* Do either of GC_push_all or GC_push_selected */ + /* depending on the third arg. */ +#endif + +/* Invoke push_conditional on ranges that are not excluded. */ +STATIC void GC_push_conditional_with_exclusions(ptr_t bottom, ptr_t top, + GC_bool all GC_ATTR_UNUSED) +{ + while ((word)bottom < (word)top) { + struct exclusion *next = GC_next_exclusion(bottom); + ptr_t excl_start; + + if (0 == next + || (word)(excl_start = next -> e_start) >= (word)top) { + GC_PUSH_CONDITIONAL(bottom, top, all); + break; + } + if ((word)excl_start > (word)bottom) + GC_PUSH_CONDITIONAL(bottom, excl_start, all); + bottom = next -> e_end; + } +} + +#ifdef IA64 + /* Similar to GC_push_all_stack_sections() but for IA-64 registers store. */ + GC_INNER void GC_push_all_register_sections(ptr_t bs_lo, ptr_t bs_hi, + int eager, struct GC_traced_stack_sect_s *traced_stack_sect) + { + while (traced_stack_sect != NULL) { + ptr_t frame_bs_lo = traced_stack_sect -> backing_store_end; + GC_ASSERT((word)frame_bs_lo <= (word)bs_hi); + if (eager) { + GC_push_all_eager(frame_bs_lo, bs_hi); + } else { + GC_push_all_stack(frame_bs_lo, bs_hi); + } + bs_hi = traced_stack_sect -> saved_backing_store_ptr; + traced_stack_sect = traced_stack_sect -> prev; + } + GC_ASSERT((word)bs_lo <= (word)bs_hi); + if (eager) { + GC_push_all_eager(bs_lo, bs_hi); + } else { + GC_push_all_stack(bs_lo, bs_hi); + } + } +#endif /* IA64 */ + +#ifdef THREADS + +GC_INNER void GC_push_all_stack_sections(ptr_t lo, ptr_t hi, + struct GC_traced_stack_sect_s *traced_stack_sect) +{ + while (traced_stack_sect != NULL) { + GC_ASSERT((word)lo HOTTER_THAN (word)traced_stack_sect); +# ifdef STACK_GROWS_UP + GC_push_all_stack((ptr_t)traced_stack_sect, lo); +# else /* STACK_GROWS_DOWN */ + GC_push_all_stack(lo, (ptr_t)traced_stack_sect); +# endif + lo = traced_stack_sect -> saved_stack_ptr; + GC_ASSERT(lo != NULL); + traced_stack_sect = traced_stack_sect -> prev; + } + GC_ASSERT(!((word)hi HOTTER_THAN (word)lo)); +# ifdef STACK_GROWS_UP + /* We got them backwards! */ + GC_push_all_stack(hi, lo); +# else /* STACK_GROWS_DOWN */ + GC_push_all_stack(lo, hi); +# endif +} + +#else /* !THREADS */ + +# ifdef TRACE_BUF + /* Defined in mark.c. */ + void GC_add_trace_entry(char *kind, word arg1, word arg2); +# endif + + /* Similar to GC_push_all_eager, but only the */ + /* part hotter than cold_gc_frame is scanned */ + /* immediately. Needed to ensure that callee- */ + /* save registers are not missed. */ +/* + * A version of GC_push_all that treats all interior pointers as valid + * and scans part of the area immediately, to make sure that saved + * register values are not lost. + * Cold_gc_frame delimits the stack section that must be scanned + * eagerly. A zero value indicates that no eager scanning is needed. + * We don't need to worry about the MANUAL_VDB case here, since this + * is only called in the single-threaded case. We assume that we + * cannot collect between an assignment and the corresponding + * GC_dirty() call. + */ +STATIC void GC_push_all_stack_partially_eager(ptr_t bottom, ptr_t top, + ptr_t cold_gc_frame) +{ +#ifndef NEED_FIXUP_POINTER + if (GC_all_interior_pointers) { + /* Push the hot end of the stack eagerly, so that register values */ + /* saved inside GC frames are marked before they disappear. */ + /* The rest of the marking can be deferred until later. */ + if (0 == cold_gc_frame) { + GC_push_all_stack(bottom, top); + return; + } + GC_ASSERT((word)bottom <= (word)cold_gc_frame + && (word)cold_gc_frame <= (word)top); +# ifdef STACK_GROWS_DOWN + GC_push_all(cold_gc_frame - sizeof(ptr_t), top); + GC_push_all_eager(bottom, cold_gc_frame); +# else /* STACK_GROWS_UP */ + GC_push_all(bottom, cold_gc_frame + sizeof(ptr_t)); + GC_push_all_eager(cold_gc_frame, top); +# endif /* STACK_GROWS_UP */ + } else +#endif + /* else */ { + GC_push_all_eager(bottom, top); + } +# ifdef TRACE_BUF + GC_add_trace_entry("GC_push_all_stack", (word)bottom, (word)top); +# endif +} + +/* Similar to GC_push_all_stack_sections() but also uses cold_gc_frame. */ +STATIC void GC_push_all_stack_part_eager_sections(ptr_t lo, ptr_t hi, + ptr_t cold_gc_frame, struct GC_traced_stack_sect_s *traced_stack_sect) +{ + GC_ASSERT(traced_stack_sect == NULL || cold_gc_frame == NULL || + (word)cold_gc_frame HOTTER_THAN (word)traced_stack_sect); + + while (traced_stack_sect != NULL) { + GC_ASSERT((word)lo HOTTER_THAN (word)traced_stack_sect); +# ifdef STACK_GROWS_UP + GC_push_all_stack_partially_eager((ptr_t)traced_stack_sect, lo, + cold_gc_frame); +# else /* STACK_GROWS_DOWN */ + GC_push_all_stack_partially_eager(lo, (ptr_t)traced_stack_sect, + cold_gc_frame); +# endif + lo = traced_stack_sect -> saved_stack_ptr; + GC_ASSERT(lo != NULL); + traced_stack_sect = traced_stack_sect -> prev; + cold_gc_frame = NULL; /* Use at most once. */ + } + + GC_ASSERT(!((word)hi HOTTER_THAN (word)lo)); +# ifdef STACK_GROWS_UP + /* We got them backwards! */ + GC_push_all_stack_partially_eager(hi, lo, cold_gc_frame); +# else /* STACK_GROWS_DOWN */ + GC_push_all_stack_partially_eager(lo, hi, cold_gc_frame); +# endif +} + +#endif /* !THREADS */ + + /* Push enough of the current stack eagerly to */ + /* ensure that callee-save registers saved in */ + /* GC frames are scanned. */ + /* In the non-threads case, schedule entire */ + /* stack for scanning. */ + /* The second argument is a pointer to the */ + /* (possibly null) thread context, for */ + /* (currently hypothetical) more precise */ + /* stack scanning. */ +/* + * In the absence of threads, push the stack contents. + * In the presence of threads, push enough of the current stack + * to ensure that callee-save registers saved in collector frames have been + * seen. + * FIXME: Merge with per-thread stuff. + */ +STATIC void GC_push_current_stack(ptr_t cold_gc_frame, + void * context GC_ATTR_UNUSED) +{ +# if defined(THREADS) + if (0 == cold_gc_frame) return; +# ifdef STACK_GROWS_DOWN + GC_push_all_eager(GC_approx_sp(), cold_gc_frame); + /* For IA64, the register stack backing store is handled */ + /* in the thread-specific code. */ +# else + GC_push_all_eager(cold_gc_frame, GC_approx_sp()); +# endif +# else + GC_push_all_stack_part_eager_sections(GC_approx_sp(), GC_stackbottom, + cold_gc_frame, GC_traced_stack_sect); +# ifdef IA64 + /* We also need to push the register stack backing store. */ + /* This should really be done in the same way as the */ + /* regular stack. For now we fudge it a bit. */ + /* Note that the backing store grows up, so we can't use */ + /* GC_push_all_stack_partially_eager. */ + { + ptr_t bsp = GC_save_regs_ret_val; + ptr_t cold_gc_bs_pointer = bsp - 2048; + if (GC_all_interior_pointers + && (word)cold_gc_bs_pointer > (word)BACKING_STORE_BASE) { + /* Adjust cold_gc_bs_pointer if below our innermost */ + /* "traced stack section" in backing store. */ + if (GC_traced_stack_sect != NULL + && (word)cold_gc_bs_pointer + < (word)GC_traced_stack_sect->backing_store_end) + cold_gc_bs_pointer = + GC_traced_stack_sect->backing_store_end; + GC_push_all_register_sections(BACKING_STORE_BASE, + cold_gc_bs_pointer, FALSE, GC_traced_stack_sect); + GC_push_all_eager(cold_gc_bs_pointer, bsp); + } else { + GC_push_all_register_sections(BACKING_STORE_BASE, bsp, + TRUE /* eager */, GC_traced_stack_sect); + } + /* All values should be sufficiently aligned that we */ + /* don't have to worry about the boundary. */ + } +# endif +# endif /* !THREADS */ +} + +GC_INNER void (*GC_push_typed_structures)(void) = 0; + + /* Push GC internal roots. These are normally */ + /* included in the static data segment, and */ + /* Thus implicitly pushed. But we must do this */ + /* explicitly if normal root processing is */ + /* disabled. */ +/* + * Push GC internal roots. Only called if there is some reason to believe + * these would not otherwise get registered. + */ +STATIC void GC_push_gc_structures(void) +{ +# ifndef GC_NO_FINALIZATION + GC_push_finalizer_structures(); +# endif +# if defined(THREADS) + GC_push_thread_structures(); +# endif + if( GC_push_typed_structures ) + GC_push_typed_structures(); +} + +GC_INNER void GC_cond_register_dynamic_libraries(void) +{ +# if defined(DYNAMIC_LOADING) || defined(MSWIN32) || defined(MSWINCE) \ + || defined(CYGWIN32) || defined(PCR) + GC_remove_tmp_roots(); + if (!GC_no_dls) GC_register_dynamic_libraries(); +# else + GC_no_dls = TRUE; +# endif +} + +STATIC void GC_push_regs_and_stack(ptr_t cold_gc_frame) +{ + GC_with_callee_saves_pushed(GC_push_current_stack, cold_gc_frame); +} + +/* + * Call the mark routines (GC_push_one for a single pointer, + * GC_push_conditional on groups of pointers) on every top level + * accessible pointer. + * If all is FALSE, arrange to push only possibly altered values. + * Cold_gc_frame is an address inside a GC frame that + * remains valid until all marking is complete. + * A zero value indicates that it's OK to miss some + * register values. + */ +GC_INNER void GC_push_roots(GC_bool all, ptr_t cold_gc_frame GC_ATTR_UNUSED) +{ + int i; + unsigned kind; + + /* + * Next push static data. This must happen early on, since it's + * not robust against mark stack overflow. + */ + /* Re-register dynamic libraries, in case one got added. */ + /* There is some argument for doing this as late as possible, */ + /* especially on win32, where it can change asynchronously. */ + /* In those cases, we do it here. But on other platforms, it's */ + /* not safe with the world stopped, so we do it earlier. */ +# if !defined(REGISTER_LIBRARIES_EARLY) + GC_cond_register_dynamic_libraries(); +# endif + + /* Mark everything in static data areas */ + for (i = 0; i < n_root_sets; i++) { + GC_push_conditional_with_exclusions( + GC_static_roots[i].r_start, + GC_static_roots[i].r_end, all); + } + + /* Mark all free list header blocks, if those were allocated from */ + /* the garbage collected heap. This makes sure they don't */ + /* disappear if we are not marking from static data. It also */ + /* saves us the trouble of scanning them, and possibly that of */ + /* marking the freelists. */ + for (kind = 0; kind < GC_n_kinds; kind++) { + void *base = GC_base(GC_obj_kinds[kind].ok_freelist); + if (0 != base) { + GC_set_mark_bit(base); + } + } + + /* Mark from GC internal roots if those might otherwise have */ + /* been excluded. */ + if (GC_no_dls || roots_were_cleared) { + GC_push_gc_structures(); + } + + /* Mark thread local free lists, even if their mark */ + /* descriptor excludes the link field. */ + /* If the world is not stopped, this is unsafe. It is */ + /* also unnecessary, since we will do this again with the */ + /* world stopped. */ +# if defined(THREAD_LOCAL_ALLOC) + if (GC_world_stopped) GC_mark_thread_local_free_lists(); +# endif + + /* + * Now traverse stacks, and mark from register contents. + * These must be done last, since they can legitimately overflow + * the mark stack. + * This is usually done by saving the current context on the + * stack, and then just tracing from the stack. + */ +# ifndef STACK_NOT_SCANNED + GC_push_regs_and_stack(cold_gc_frame); +# endif + + if (GC_push_other_roots != 0) (*GC_push_other_roots)(); + /* In the threads case, this also pushes thread stacks. */ + /* Note that without interior pointer recognition lots */ + /* of stuff may have been pushed already, and this */ + /* should be careful about mark stack overflows. */ +} diff --git a/misc.c b/misc.c new file mode 100644 index 0000000..ccde006 --- /dev/null +++ b/misc.c @@ -0,0 +1,2359 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1999-2001 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_pmark.h" + +#include +#include +#include + +#ifndef MSWINCE +# include +#endif + +#ifdef GC_SOLARIS_THREADS +# include +#endif + +#if defined(MSWIN32) || defined(MSWINCE) \ + || (defined(CYGWIN32) && defined(GC_READ_ENV_FILE)) +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN 1 +# endif +# define NOSERVICE +# include +#endif + +#if defined(UNIX_LIKE) || defined(CYGWIN32) || defined(SYMBIAN) +# include +# include +# include +#endif + +#ifdef NONSTOP +# include +#endif + +#ifdef THREADS +# ifdef PCR +# include "il/PCR_IL.h" + GC_INNER PCR_Th_ML GC_allocate_ml; +# elif defined(SN_TARGET_PS3) +# include + GC_INNER pthread_mutex_t GC_allocate_ml; +# endif + /* For other platforms with threads, the lock and possibly */ + /* GC_lock_holder variables are defined in the thread support code. */ +#endif /* THREADS */ + +#ifdef DYNAMIC_LOADING + /* We need to register the main data segment. Returns TRUE unless */ + /* this is done implicitly as part of dynamic library registration. */ +# define GC_REGISTER_MAIN_STATIC_DATA() GC_register_main_static_data() +#elif defined(GC_DONT_REGISTER_MAIN_STATIC_DATA) +# define GC_REGISTER_MAIN_STATIC_DATA() FALSE +#else + /* Don't unnecessarily call GC_register_main_static_data() in case */ + /* dyn_load.c isn't linked in. */ +# define GC_REGISTER_MAIN_STATIC_DATA() TRUE +#endif + +#ifdef NEED_CANCEL_DISABLE_COUNT + __thread unsigned char GC_cancel_disable_count = 0; +#endif + +GC_FAR struct _GC_arrays GC_arrays /* = { 0 } */; + +GC_INNER GC_bool GC_debugging_started = FALSE; + /* defined here so we don't have to load debug_malloc.o */ + +ptr_t GC_stackbottom = 0; + +#ifdef IA64 + ptr_t GC_register_stackbottom = 0; +#endif + +int GC_dont_gc = FALSE; + +int GC_dont_precollect = FALSE; + +GC_bool GC_quiet = 0; /* used also in pcr_interface.c */ + +#ifndef SMALL_CONFIG + int GC_print_stats = 0; +#endif + +#ifdef GC_PRINT_BACK_HEIGHT + GC_INNER GC_bool GC_print_back_height = TRUE; +#else + GC_INNER GC_bool GC_print_back_height = FALSE; +#endif + +#ifndef NO_DEBUGGING +# ifdef GC_DUMP_REGULARLY + GC_INNER GC_bool GC_dump_regularly = TRUE; + /* Generate regular debugging dumps. */ +# else + GC_INNER GC_bool GC_dump_regularly = FALSE; +# endif +#endif + +#ifdef KEEP_BACK_PTRS + GC_INNER long GC_backtraces = 0; + /* Number of random backtraces to generate for each GC. */ +#endif + +#ifdef FIND_LEAK + int GC_find_leak = 1; +#else + int GC_find_leak = 0; +#endif + +#ifndef SHORT_DBG_HDRS +# ifdef GC_FINDLEAK_DELAY_FREE + GC_INNER GC_bool GC_findleak_delay_free = TRUE; +# else + GC_INNER GC_bool GC_findleak_delay_free = FALSE; +# endif +#endif /* !SHORT_DBG_HDRS */ + +#ifdef ALL_INTERIOR_POINTERS + int GC_all_interior_pointers = 1; +#else + int GC_all_interior_pointers = 0; +#endif + +#ifdef FINALIZE_ON_DEMAND + int GC_finalize_on_demand = 1; +#else + int GC_finalize_on_demand = 0; +#endif + +#ifdef JAVA_FINALIZATION + int GC_java_finalization = 1; +#else + int GC_java_finalization = 0; +#endif + +/* All accesses to it should be synchronized to avoid data races. */ +GC_finalizer_notifier_proc GC_finalizer_notifier = + (GC_finalizer_notifier_proc)0; + +#ifdef GC_FORCE_UNMAP_ON_GCOLLECT + /* Has no effect unless USE_MUNMAP. */ + /* Has no effect on implicitly-initiated garbage collections. */ + GC_INNER GC_bool GC_force_unmap_on_gcollect = TRUE; +#else + GC_INNER GC_bool GC_force_unmap_on_gcollect = FALSE; +#endif + +#ifndef GC_LARGE_ALLOC_WARN_INTERVAL +# define GC_LARGE_ALLOC_WARN_INTERVAL 5 +#endif +GC_INNER long GC_large_alloc_warn_interval = GC_LARGE_ALLOC_WARN_INTERVAL; + /* Interval between unsuppressed warnings. */ + +STATIC void * GC_CALLBACK GC_default_oom_fn( + size_t bytes_requested GC_ATTR_UNUSED) +{ + return(0); +} + +/* All accesses to it should be synchronized to avoid data races. */ +GC_oom_func GC_oom_fn = GC_default_oom_fn; + +#ifdef CAN_HANDLE_FORK +# ifdef HANDLE_FORK + GC_INNER int GC_handle_fork = 1; + /* The value is examined by GC_thr_init. */ +# else + GC_INNER int GC_handle_fork = FALSE; +# endif + +#elif !defined(HAVE_NO_FORK) + + /* Same as above but with GC_CALL calling conventions. */ + GC_API void GC_CALL GC_atfork_prepare(void) + { +# ifdef THREADS + ABORT("fork() handling unsupported"); +# endif + } + + GC_API void GC_CALL GC_atfork_parent(void) + { + /* empty */ + } + + GC_API void GC_CALL GC_atfork_child(void) + { + /* empty */ + } +#endif /* !CAN_HANDLE_FORK && !HAVE_NO_FORK */ + +/* Overrides the default automatic handle-fork mode. Has effect only */ +/* if called before GC_INIT. */ +GC_API void GC_CALL GC_set_handle_fork(int value GC_ATTR_UNUSED) +{ +# ifdef CAN_HANDLE_FORK + if (!GC_is_initialized) + GC_handle_fork = value >= -1 ? value : 1; + /* Map all negative values except for -1 to a positive one. */ +# elif defined(THREADS) || (defined(DARWIN) && defined(MPROTECT_VDB)) + if (!GC_is_initialized && value) { +# ifndef SMALL_CONFIG + GC_init(); /* just to initialize GC_stderr */ +# endif + ABORT("fork() handling unsupported"); + } +# else + /* No at-fork handler is needed in the single-threaded mode. */ +# endif +} + +/* Set things up so that GC_size_map[i] >= granules(i), */ +/* but not too much bigger */ +/* and so that size_map contains relatively few distinct entries */ +/* This was originally stolen from Russ Atkinson's Cedar */ +/* quantization algorithm (but we precompute it). */ +STATIC void GC_init_size_map(void) +{ + size_t i; + + /* Map size 0 to something bigger. */ + /* This avoids problems at lower levels. */ + GC_size_map[0] = 1; + for (i = 1; i <= GRANULES_TO_BYTES(TINY_FREELISTS-1) - EXTRA_BYTES; i++) { + GC_size_map[i] = ROUNDED_UP_GRANULES(i); +# ifndef _MSC_VER + GC_ASSERT(GC_size_map[i] < TINY_FREELISTS); + /* Seems to tickle bug in VC++ 2008 for AMD64 */ +# endif + } + /* We leave the rest of the array to be filled in on demand. */ +} + +/* Fill in additional entries in GC_size_map, including the ith one */ +/* We assume the ith entry is currently 0. */ +/* Note that a filled in section of the array ending at n always */ +/* has length at least n/4. */ +GC_INNER void GC_extend_size_map(size_t i) +{ + size_t orig_granule_sz = ROUNDED_UP_GRANULES(i); + size_t granule_sz = orig_granule_sz; + size_t byte_sz = GRANULES_TO_BYTES(granule_sz); + /* The size we try to preserve. */ + /* Close to i, unless this would */ + /* introduce too many distinct sizes. */ + size_t smaller_than_i = byte_sz - (byte_sz >> 3); + size_t much_smaller_than_i = byte_sz - (byte_sz >> 2); + size_t low_limit; /* The lowest indexed entry we */ + /* initialize. */ + size_t j; + + if (GC_size_map[smaller_than_i] == 0) { + low_limit = much_smaller_than_i; + while (GC_size_map[low_limit] != 0) low_limit++; + } else { + low_limit = smaller_than_i + 1; + while (GC_size_map[low_limit] != 0) low_limit++; + granule_sz = ROUNDED_UP_GRANULES(low_limit); + granule_sz += granule_sz >> 3; + if (granule_sz < orig_granule_sz) granule_sz = orig_granule_sz; + } + /* For these larger sizes, we use an even number of granules. */ + /* This makes it easier to, e.g., construct a 16-byte-aligned */ + /* allocator even if GRANULE_BYTES is 8. */ + granule_sz += 1; + granule_sz &= ~1; + if (granule_sz > MAXOBJGRANULES) { + granule_sz = MAXOBJGRANULES; + } + /* If we can fit the same number of larger objects in a block, */ + /* do so. */ + { + size_t number_of_objs = HBLK_GRANULES/granule_sz; + GC_ASSERT(number_of_objs != 0); + granule_sz = HBLK_GRANULES/number_of_objs; + granule_sz &= ~1; + } + byte_sz = GRANULES_TO_BYTES(granule_sz); + /* We may need one extra byte; */ + /* don't always fill in GC_size_map[byte_sz] */ + byte_sz -= EXTRA_BYTES; + + for (j = low_limit; j <= byte_sz; j++) GC_size_map[j] = granule_sz; +} + + +/* + * The following is a gross hack to deal with a problem that can occur + * on machines that are sloppy about stack frame sizes, notably SPARC. + * Bogus pointers may be written to the stack and not cleared for + * a LONG time, because they always fall into holes in stack frames + * that are not written. We partially address this by clearing + * sections of the stack whenever we get control. + */ +# ifdef THREADS +# define BIG_CLEAR_SIZE 2048 /* Clear this much now and then. */ +# define SMALL_CLEAR_SIZE 256 /* Clear this much every time. */ +# else + STATIC word GC_stack_last_cleared = 0; /* GC_no when we last did this */ + STATIC ptr_t GC_min_sp = NULL; + /* Coolest stack pointer value from which */ + /* we've already cleared the stack. */ + STATIC ptr_t GC_high_water = NULL; + /* "hottest" stack pointer value we have seen */ + /* recently. Degrades over time. */ + STATIC word GC_bytes_allocd_at_reset = 0; +# define DEGRADE_RATE 50 +# endif + +# define CLEAR_SIZE 213 /* Granularity for GC_clear_stack_inner */ + +#if defined(ASM_CLEAR_CODE) + void *GC_clear_stack_inner(void *, ptr_t); +#else + /* Clear the stack up to about limit. Return arg. This function is */ + /* not static because it could also be erroneously defined in .S */ + /* file, so this error would be caught by the linker. */ + void * GC_clear_stack_inner(void *arg, ptr_t limit) + { + volatile word dummy[CLEAR_SIZE]; + + BZERO((/* no volatile */ void *)dummy, sizeof(dummy)); + if ((word)GC_approx_sp() COOLER_THAN (word)limit) { + (void) GC_clear_stack_inner(arg, limit); + } + /* Make sure the recursive call is not a tail call, and the bzero */ + /* call is not recognized as dead code. */ + GC_noop1((word)dummy); + return(arg); + } +#endif + +/* Clear some of the inaccessible part of the stack. Returns its */ +/* argument, so it can be used in a tail call position, hence clearing */ +/* another frame. */ +GC_API void * GC_CALL GC_clear_stack(void *arg) +{ +# ifndef STACK_NOT_SCANNED + ptr_t sp = GC_approx_sp(); /* Hotter than actual sp */ +# ifdef THREADS + word volatile dummy[SMALL_CLEAR_SIZE]; + static unsigned random_no = 0; + /* Should be more random than it is ... */ + /* Used to occasionally clear a bigger */ + /* chunk. */ +# endif + +# define SLOP 400 + /* Extra bytes we clear every time. This clears our own */ + /* activation record, and should cause more frequent */ + /* clearing near the cold end of the stack, a good thing. */ +# define GC_SLOP 4000 + /* We make GC_high_water this much hotter than we really saw */ + /* it, to cover for GC noise etc. above our current frame. */ +# define CLEAR_THRESHOLD 100000 + /* We restart the clearing process after this many bytes of */ + /* allocation. Otherwise very heavily recursive programs */ + /* with sparse stacks may result in heaps that grow almost */ + /* without bounds. As the heap gets larger, collection */ + /* frequency decreases, thus clearing frequency would decrease, */ + /* thus more junk remains accessible, thus the heap gets */ + /* larger ... */ +# ifdef THREADS + if (++random_no % 13 == 0) { + ptr_t limit = sp; + + MAKE_HOTTER(limit, BIG_CLEAR_SIZE*sizeof(word)); + limit = (ptr_t)((word)limit & ~0xf); + /* Make it sufficiently aligned for assembly */ + /* implementations of GC_clear_stack_inner. */ + return GC_clear_stack_inner(arg, limit); + } + BZERO((void *)dummy, SMALL_CLEAR_SIZE*sizeof(word)); +# else + if (GC_gc_no > GC_stack_last_cleared) { + /* Start things over, so we clear the entire stack again */ + if (GC_stack_last_cleared == 0) + GC_high_water = (ptr_t)GC_stackbottom; + GC_min_sp = GC_high_water; + GC_stack_last_cleared = GC_gc_no; + GC_bytes_allocd_at_reset = GC_bytes_allocd; + } + /* Adjust GC_high_water */ + MAKE_COOLER(GC_high_water, WORDS_TO_BYTES(DEGRADE_RATE) + GC_SLOP); + if ((word)sp HOTTER_THAN (word)GC_high_water) { + GC_high_water = sp; + } + MAKE_HOTTER(GC_high_water, GC_SLOP); + { + ptr_t limit = GC_min_sp; + + MAKE_HOTTER(limit, SLOP); + if ((word)sp COOLER_THAN (word)limit) { + limit = (ptr_t)((word)limit & ~0xf); + /* Make it sufficiently aligned for assembly */ + /* implementations of GC_clear_stack_inner. */ + GC_min_sp = sp; + return GC_clear_stack_inner(arg, limit); + } + } + if (GC_bytes_allocd - GC_bytes_allocd_at_reset > CLEAR_THRESHOLD) { + /* Restart clearing process, but limit how much clearing we do. */ + GC_min_sp = sp; + MAKE_HOTTER(GC_min_sp, CLEAR_THRESHOLD/4); + if ((word)GC_min_sp HOTTER_THAN (word)GC_high_water) + GC_min_sp = GC_high_water; + GC_bytes_allocd_at_reset = GC_bytes_allocd; + } +# endif +# endif + return arg; +} + +/* Return a pointer to the base address of p, given a pointer to a */ +/* an address within an object. Return 0 o.w. */ +GC_API void * GC_CALL GC_base(void * p) +{ + ptr_t r; + struct hblk *h; + bottom_index *bi; + hdr *candidate_hdr; + + r = p; + if (!EXPECT(GC_is_initialized, TRUE)) return 0; + h = HBLKPTR(r); + GET_BI(r, bi); + candidate_hdr = HDR_FROM_BI(bi, r); + if (candidate_hdr == 0) return(0); + /* If it's a pointer to the middle of a large object, move it */ + /* to the beginning. */ + while (IS_FORWARDING_ADDR_OR_NIL(candidate_hdr)) { + h = FORWARDED_ADDR(h,candidate_hdr); + r = (ptr_t)h; + candidate_hdr = HDR(h); + } + if (HBLK_IS_FREE(candidate_hdr)) return(0); + /* Make sure r points to the beginning of the object */ + r = (ptr_t)((word)r & ~(WORDS_TO_BYTES(1) - 1)); + { + size_t offset = HBLKDISPL(r); + word sz = candidate_hdr -> hb_sz; + size_t obj_displ = offset % sz; + ptr_t limit; + + r -= obj_displ; + limit = r + sz; + if ((word)limit > (word)(h + 1) && sz <= HBLKSIZE) { + return(0); + } + if ((word)p >= (word)limit) return(0); + } + return((void *)r); +} + +/* Return TRUE if and only if p points to somewhere in GC heap. */ +GC_API int GC_CALL GC_is_heap_ptr(const void *p) +{ + bottom_index *bi; + + GC_ASSERT(GC_is_initialized); + GET_BI(p, bi); + return HDR_FROM_BI(bi, p) != 0; +} + +/* Return the size of an object, given a pointer to its base. */ +/* (For small objects this also happens to work from interior pointers, */ +/* but that shouldn't be relied upon.) */ +GC_API size_t GC_CALL GC_size(const void * p) +{ + hdr * hhdr = HDR(p); + + return hhdr -> hb_sz; +} + + +/* These getters remain unsynchronized for compatibility (since some */ +/* clients could call some of them from a GC callback holding the */ +/* allocator lock). */ +GC_API size_t GC_CALL GC_get_heap_size(void) +{ + /* ignore the memory space returned to OS (i.e. count only the */ + /* space owned by the garbage collector) */ + return (size_t)(GC_heapsize - GC_unmapped_bytes); +} + +GC_API size_t GC_CALL GC_get_free_bytes(void) +{ + /* ignore the memory space returned to OS */ + return (size_t)(GC_large_free_bytes - GC_unmapped_bytes); +} + +GC_API size_t GC_CALL GC_get_unmapped_bytes(void) +{ + return (size_t)GC_unmapped_bytes; +} + +GC_API size_t GC_CALL GC_get_bytes_since_gc(void) +{ + return (size_t)GC_bytes_allocd; +} + +GC_API size_t GC_CALL GC_get_total_bytes(void) +{ + return (size_t)(GC_bytes_allocd + GC_bytes_allocd_before_gc); +} + +#ifndef GC_GET_HEAP_USAGE_NOT_NEEDED + +/* Return the heap usage information. This is a thread-safe (atomic) */ +/* alternative for the five above getters. NULL pointer is allowed for */ +/* any argument. Returned (filled in) values are of word type. */ +GC_API void GC_CALL GC_get_heap_usage_safe(GC_word *pheap_size, + GC_word *pfree_bytes, GC_word *punmapped_bytes, + GC_word *pbytes_since_gc, GC_word *ptotal_bytes) +{ + DCL_LOCK_STATE; + + LOCK(); + if (pheap_size != NULL) + *pheap_size = GC_heapsize - GC_unmapped_bytes; + if (pfree_bytes != NULL) + *pfree_bytes = GC_large_free_bytes - GC_unmapped_bytes; + if (punmapped_bytes != NULL) + *punmapped_bytes = GC_unmapped_bytes; + if (pbytes_since_gc != NULL) + *pbytes_since_gc = GC_bytes_allocd; + if (ptotal_bytes != NULL) + *ptotal_bytes = GC_bytes_allocd + GC_bytes_allocd_before_gc; + UNLOCK(); +} + + GC_INNER word GC_reclaimed_bytes_before_gc = 0; + + /* Fill in GC statistics provided the destination is of enough size. */ + static void fill_prof_stats(struct GC_prof_stats_s *pstats) + { + pstats->heapsize_full = GC_heapsize; + pstats->free_bytes_full = GC_large_free_bytes; + pstats->unmapped_bytes = GC_unmapped_bytes; + pstats->bytes_allocd_since_gc = GC_bytes_allocd; + pstats->allocd_bytes_before_gc = GC_bytes_allocd_before_gc; + pstats->non_gc_bytes = GC_non_gc_bytes; + pstats->gc_no = GC_gc_no; /* could be -1 */ +# ifdef PARALLEL_MARK + pstats->markers_m1 = (word)GC_markers_m1; +# else + pstats->markers_m1 = 0; /* one marker */ +# endif + pstats->bytes_reclaimed_since_gc = GC_bytes_found > 0 ? + (word)GC_bytes_found : 0; + pstats->reclaimed_bytes_before_gc = GC_reclaimed_bytes_before_gc; + } + +# include /* for memset() */ + + GC_API size_t GC_CALL GC_get_prof_stats(struct GC_prof_stats_s *pstats, + size_t stats_sz) + { + struct GC_prof_stats_s stats; + DCL_LOCK_STATE; + + LOCK(); + fill_prof_stats(stats_sz >= sizeof(stats) ? pstats : &stats); + UNLOCK(); + + if (stats_sz == sizeof(stats)) { + return sizeof(stats); + } else if (stats_sz > sizeof(stats)) { + /* Fill in the remaining part with -1. */ + memset((char *)pstats + sizeof(stats), 0xff, stats_sz - sizeof(stats)); + return sizeof(stats); + } else { + BCOPY(&stats, pstats, stats_sz); + return stats_sz; + } + } + +# ifdef THREADS + /* The _unsafe version assumes the caller holds the allocation lock. */ + GC_API size_t GC_CALL GC_get_prof_stats_unsafe( + struct GC_prof_stats_s *pstats, + size_t stats_sz) + { + struct GC_prof_stats_s stats; + + if (stats_sz >= sizeof(stats)) { + fill_prof_stats(pstats); + if (stats_sz > sizeof(stats)) + memset((char *)pstats + sizeof(stats), 0xff, + stats_sz - sizeof(stats)); + return sizeof(stats); + } else { + fill_prof_stats(&stats); + BCOPY(&stats, pstats, stats_sz); + return stats_sz; + } + } +# endif /* THREADS */ + +#endif /* !GC_GET_HEAP_USAGE_NOT_NEEDED */ + +#if defined(GC_DARWIN_THREADS) || defined(GC_OPENBSD_UTHREADS) \ + || defined(GC_WIN32_THREADS) || (defined(NACL) && defined(THREADS)) + /* GC does not use signals to suspend and restart threads. */ + GC_API void GC_CALL GC_set_suspend_signal(int sig GC_ATTR_UNUSED) + { + /* empty */ + } + + GC_API void GC_CALL GC_set_thr_restart_signal(int sig GC_ATTR_UNUSED) + { + /* empty */ + } + + GC_API int GC_CALL GC_get_suspend_signal(void) + { + return -1; + } + + GC_API int GC_CALL GC_get_thr_restart_signal(void) + { + return -1; + } +#endif /* GC_DARWIN_THREADS || GC_WIN32_THREADS || ... */ + +#if !defined(_MAX_PATH) && (defined(MSWIN32) || defined(MSWINCE) \ + || defined(CYGWIN32)) +# define _MAX_PATH MAX_PATH +#endif + +#ifdef GC_READ_ENV_FILE + /* This works for Win32/WinCE for now. Really useful only for WinCE. */ + STATIC char *GC_envfile_content = NULL; + /* The content of the GC "env" file with CR and */ + /* LF replaced to '\0'. NULL if the file is */ + /* missing or empty. Otherwise, always ends */ + /* with '\0'. */ + STATIC unsigned GC_envfile_length = 0; + /* Length of GC_envfile_content (if non-NULL). */ + +# ifndef GC_ENVFILE_MAXLEN +# define GC_ENVFILE_MAXLEN 0x4000 +# endif + + /* The routine initializes GC_envfile_content from the GC "env" file. */ + STATIC void GC_envfile_init(void) + { +# if defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32) + HANDLE hFile; + char *content; + unsigned ofs; + unsigned len; + DWORD nBytesRead; + TCHAR path[_MAX_PATH + 0x10]; /* buffer for path + ext */ + len = (unsigned)GetModuleFileName(NULL /* hModule */, path, + _MAX_PATH + 1); + /* If GetModuleFileName() has failed then len is 0. */ + if (len > 4 && path[len - 4] == (TCHAR)'.') { + len -= 4; /* strip executable file extension */ + } + BCOPY(TEXT(".gc.env"), &path[len], sizeof(TEXT(".gc.env"))); + hFile = CreateFile(path, GENERIC_READ, + FILE_SHARE_READ | FILE_SHARE_WRITE, + NULL /* lpSecurityAttributes */, OPEN_EXISTING, + FILE_ATTRIBUTE_NORMAL, NULL /* hTemplateFile */); + if (hFile == INVALID_HANDLE_VALUE) + return; /* the file is absent or the operation is failed */ + len = (unsigned)GetFileSize(hFile, NULL); + if (len <= 1 || len >= GC_ENVFILE_MAXLEN) { + CloseHandle(hFile); + return; /* invalid file length - ignoring the file content */ + } + /* At this execution point, GC_setpagesize() and GC_init_win32() */ + /* must already be called (for GET_MEM() to work correctly). */ + content = (char *)GET_MEM(ROUNDUP_PAGESIZE_IF_MMAP((size_t)len + 1)); + if (content == NULL) { + CloseHandle(hFile); + return; /* allocation failure */ + } + ofs = 0; + nBytesRead = (DWORD)-1L; + /* Last ReadFile() call should clear nBytesRead on success. */ + while (ReadFile(hFile, content + ofs, len - ofs + 1, &nBytesRead, + NULL /* lpOverlapped */) && nBytesRead != 0) { + if ((ofs += nBytesRead) > len) + break; + } + CloseHandle(hFile); + if (ofs != len || nBytesRead != 0) + return; /* read operation is failed - ignoring the file content */ + content[ofs] = '\0'; + while (ofs-- > 0) { + if (content[ofs] == '\r' || content[ofs] == '\n') + content[ofs] = '\0'; + } + GC_ASSERT(NULL == GC_envfile_content); + GC_envfile_length = len + 1; + GC_envfile_content = content; +# endif + } + + /* This routine scans GC_envfile_content for the specified */ + /* environment variable (and returns its value if found). */ + GC_INNER char * GC_envfile_getenv(const char *name) + { + char *p; + char *end_of_content; + unsigned namelen; +# ifndef NO_GETENV + p = getenv(name); /* try the standard getenv() first */ + if (p != NULL) + return *p != '\0' ? p : NULL; +# endif + p = GC_envfile_content; + if (p == NULL) + return NULL; /* "env" file is absent (or empty) */ + namelen = strlen(name); + if (namelen == 0) /* a sanity check */ + return NULL; + for (end_of_content = p + GC_envfile_length; + p != end_of_content; p += strlen(p) + 1) { + if (strncmp(p, name, namelen) == 0 && *(p += namelen) == '=') { + p++; /* the match is found; skip '=' */ + return *p != '\0' ? p : NULL; + } + /* If not matching then skip to the next line. */ + } + return NULL; /* no match found */ + } +#endif /* GC_READ_ENV_FILE */ + +GC_INNER GC_bool GC_is_initialized = FALSE; + +GC_API int GC_CALL GC_is_init_called(void) +{ + return GC_is_initialized; +} + +#if (defined(MSWIN32) || defined(MSWINCE)) && defined(THREADS) + GC_INNER CRITICAL_SECTION GC_write_cs; +#endif + +#ifndef DONT_USE_ATEXIT + STATIC void GC_exit_check(void) + { + if (GC_find_leak) { + GC_gcollect(); + } + } +#endif + +#if defined(UNIX_LIKE) && !defined(NO_DEBUGGING) + static void looping_handler(int sig) + { + GC_err_printf("Caught signal %d: looping in handler\n", sig); + for (;;) { + /* empty */ + } + } + + static GC_bool installed_looping_handler = FALSE; + + static void maybe_install_looping_handler(void) + { + /* Install looping handler before the write fault handler, so we */ + /* handle write faults correctly. */ + if (!installed_looping_handler && 0 != GETENV("GC_LOOP_ON_ABORT")) { + GC_set_and_save_fault_handler(looping_handler); + installed_looping_handler = TRUE; + } + } + +#else /* !UNIX_LIKE */ +# define maybe_install_looping_handler() +#endif + +#define GC_DEFAULT_STDOUT_FD 1 +#define GC_DEFAULT_STDERR_FD 2 + +#if !defined(OS2) && !defined(MACOS) && !defined(GC_ANDROID_LOG) \ + && !defined(MSWIN32) && !defined(MSWINCE) + STATIC int GC_stdout = GC_DEFAULT_STDOUT_FD; + STATIC int GC_stderr = GC_DEFAULT_STDERR_FD; + STATIC int GC_log = GC_DEFAULT_STDERR_FD; + + GC_API void GC_CALL GC_set_log_fd(int fd) + { + GC_log = fd; + } +#endif + +#if defined(MSWIN32) && (!defined(SMALL_CONFIG) \ + || (!defined(_WIN64) && defined(GC_WIN32_THREADS) \ + && defined(CHECK_NOT_WOW64))) + STATIC void GC_win32_MessageBoxA(const char *msg, const char *caption, + unsigned flags) + { +# ifndef DONT_USE_USER32_DLL + /* Use static binding to "user32.dll". */ + (void)MessageBoxA(NULL, msg, caption, flags); +# else + /* This simplifies linking - resolve "MessageBoxA" at run-time. */ + HINSTANCE hU32 = LoadLibrary(TEXT("user32.dll")); + if (hU32) { + FARPROC pfn = GetProcAddress(hU32, "MessageBoxA"); + if (pfn) + (void)(*(int (WINAPI *)(HWND, LPCSTR, LPCSTR, UINT))pfn)( + NULL /* hWnd */, msg, caption, flags); + (void)FreeLibrary(hU32); + } +# endif + } +#endif /* MSWIN32 */ + +STATIC word GC_parse_mem_size_arg(const char *str) +{ + word result = 0; /* bad value */ + + if (*str != '\0') { + char *endptr; + char ch; + + result = (word)STRTOULL(str, &endptr, 10); + ch = *endptr; + if (ch != '\0') { + if (*(endptr + 1) != '\0') + return 0; + /* Allow k, M or G suffix. */ + switch (ch) { + case 'K': + case 'k': + result <<= 10; + break; + case 'M': + case 'm': + result <<= 20; + break; + case 'G': + case 'g': + result <<= 30; + break; + default: + result = 0; + } + } + } + return result; +} + +#define GC_LOG_STD_NAME "gc.log" + +GC_API void GC_CALL GC_init(void) +{ + /* LOCK(); -- no longer does anything this early. */ + word initial_heap_sz; + IF_CANCEL(int cancel_state;) + + if (EXPECT(GC_is_initialized, TRUE)) return; +# ifdef REDIRECT_MALLOC + { + static GC_bool init_started = FALSE; + if (init_started) + ABORT("Redirected malloc() called during GC init"); + init_started = TRUE; + } +# endif + +# if defined(GC_INITIAL_HEAP_SIZE) && !defined(CPPCHECK) + initial_heap_sz = GC_INITIAL_HEAP_SIZE; +# else + initial_heap_sz = MINHINCR * HBLKSIZE; +# endif + +# if defined(MSWIN32) && !defined(_WIN64) && defined(GC_WIN32_THREADS) \ + && defined(CHECK_NOT_WOW64) + { + /* Windows: running 32-bit GC on 64-bit system is broken! */ + /* WoW64 bug affects SuspendThread, no workaround exists. */ + HMODULE hK32 = GetModuleHandle(TEXT("kernel32.dll")); + if (hK32) { + FARPROC pfn = GetProcAddress(hK32, "IsWow64Process"); + BOOL bIsWow64 = FALSE; + if (pfn + && (*(BOOL (WINAPI*)(HANDLE, BOOL*))pfn)(GetCurrentProcess(), + &bIsWow64) + && bIsWow64) { + GC_win32_MessageBoxA("This program uses BDWGC garbage collector" + " compiled for 32-bit but running on 64-bit Windows.\n" + "This is known to be broken due to a design flaw" + " in Windows itself! Expect erratic behavior...", + "32-bit program running on 64-bit system", + MB_ICONWARNING | MB_OK); + } + } + } +# endif + + DISABLE_CANCEL(cancel_state); + /* Note that although we are nominally called with the */ + /* allocation lock held, the allocation lock is now */ + /* only really acquired once a second thread is forked.*/ + /* And the initialization code needs to run before */ + /* then. Thus we really don't hold any locks, and can */ + /* in fact safely initialize them here. */ +# ifdef THREADS +# ifndef GC_ALWAYS_MULTITHREADED + GC_ASSERT(!GC_need_to_lock); +# endif +# ifdef SN_TARGET_PS3 + { + pthread_mutexattr_t mattr; + + if (0 != pthread_mutexattr_init(&mattr)) { + ABORT("pthread_mutexattr_init failed"); + } + if (0 != pthread_mutex_init(&GC_allocate_ml, &mattr)) { + ABORT("pthread_mutex_init failed"); + } + (void)pthread_mutexattr_destroy(&mattr); + } +# endif +# endif /* THREADS */ +# if defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS) + { +# ifndef MSWINCE + BOOL (WINAPI *pfn) (LPCRITICAL_SECTION, DWORD) = NULL; + HMODULE hK32 = GetModuleHandle(TEXT("kernel32.dll")); + if (hK32) + pfn = (BOOL (WINAPI *) (LPCRITICAL_SECTION, DWORD)) + GetProcAddress (hK32, + "InitializeCriticalSectionAndSpinCount"); + if (pfn) + pfn(&GC_allocate_ml, 4000); + else +# endif /* !MSWINCE */ + /* else */ InitializeCriticalSection (&GC_allocate_ml); + } +# endif /* GC_WIN32_THREADS */ +# if (defined(MSWIN32) || defined(MSWINCE)) && defined(THREADS) + InitializeCriticalSection(&GC_write_cs); +# endif + GC_setpagesize(); +# ifdef MSWIN32 + GC_init_win32(); +# endif +# ifdef GC_READ_ENV_FILE + GC_envfile_init(); +# endif +# ifndef SMALL_CONFIG +# ifdef GC_PRINT_VERBOSE_STATS + /* This is useful for debugging and profiling on platforms with */ + /* missing getenv() (like WinCE). */ + GC_print_stats = VERBOSE; +# else + if (0 != GETENV("GC_PRINT_VERBOSE_STATS")) { + GC_print_stats = VERBOSE; + } else if (0 != GETENV("GC_PRINT_STATS")) { + GC_print_stats = 1; + } +# endif +# if (defined(UNIX_LIKE) && !defined(GC_ANDROID_LOG)) \ + || defined(CYGWIN32) || defined(SYMBIAN) + { + char * file_name = TRUSTED_STRING(GETENV("GC_LOG_FILE")); +# ifdef GC_LOG_TO_FILE_ALWAYS + if (NULL == file_name) + file_name = GC_LOG_STD_NAME; +# else + if (0 != file_name) +# endif + { + int log_d = open(file_name, O_CREAT|O_WRONLY|O_APPEND, 0666); + if (log_d < 0) { + GC_err_printf("Failed to open %s as log file\n", file_name); + } else { + char *str; + GC_log = log_d; + str = GETENV("GC_ONLY_LOG_TO_FILE"); +# ifdef GC_ONLY_LOG_TO_FILE + /* The similar environment variable set to "0" */ + /* overrides the effect of the macro defined. */ + if (str != NULL && *str == '0' && *(str + 1) == '\0') +# else + /* Otherwise setting the environment variable */ + /* to anything other than "0" will prevent from */ + /* redirecting stdout/err to the log file. */ + if (str == NULL || (*str == '0' && *(str + 1) == '\0')) +# endif + { + GC_stdout = log_d; + GC_stderr = log_d; + } + } + } + } +# endif +# endif /* !SMALL_CONFIG */ +# if !defined(NO_DEBUGGING) && !defined(GC_DUMP_REGULARLY) + if (0 != GETENV("GC_DUMP_REGULARLY")) { + GC_dump_regularly = TRUE; + } +# endif +# ifdef KEEP_BACK_PTRS + { + char * backtraces_string = GETENV("GC_BACKTRACES"); + if (0 != backtraces_string) { + GC_backtraces = atol(backtraces_string); + if (backtraces_string[0] == '\0') GC_backtraces = 1; + } + } +# endif + if (0 != GETENV("GC_FIND_LEAK")) { + GC_find_leak = 1; + } +# ifndef SHORT_DBG_HDRS + if (0 != GETENV("GC_FINDLEAK_DELAY_FREE")) { + GC_findleak_delay_free = TRUE; + } +# endif + if (0 != GETENV("GC_ALL_INTERIOR_POINTERS")) { + GC_all_interior_pointers = 1; + } + if (0 != GETENV("GC_DONT_GC")) { + GC_dont_gc = 1; + } + if (0 != GETENV("GC_PRINT_BACK_HEIGHT")) { + GC_print_back_height = TRUE; + } + if (0 != GETENV("GC_NO_BLACKLIST_WARNING")) { + GC_large_alloc_warn_interval = LONG_MAX; + } + { + char * addr_string = GETENV("GC_TRACE"); + if (0 != addr_string) { +# ifndef ENABLE_TRACE + WARN("Tracing not enabled: Ignoring GC_TRACE value\n", 0); +# else + word addr = (word)STRTOULL(addr_string, NULL, 16); + if (addr < 0x1000) + WARN("Unlikely trace address: %p\n", (void *)addr); + GC_trace_addr = (ptr_t)addr; +# endif + } + } +# ifdef GC_COLLECT_AT_MALLOC + { + char * string = GETENV("GC_COLLECT_AT_MALLOC"); + if (0 != string) { + size_t min_lb = (size_t)STRTOULL(string, NULL, 10); + if (min_lb > 0) + GC_dbg_collect_at_malloc_min_lb = min_lb; + } + } +# endif +# ifndef GC_DISABLE_INCREMENTAL + { + char * time_limit_string = GETENV("GC_PAUSE_TIME_TARGET"); + if (0 != time_limit_string) { + long time_limit = atol(time_limit_string); + if (time_limit < 5) { + WARN("GC_PAUSE_TIME_TARGET environment variable value too small " + "or bad syntax: Ignoring\n", 0); + } else { + GC_time_limit = time_limit; + } + } + } +# endif +# ifndef SMALL_CONFIG + { + char * full_freq_string = GETENV("GC_FULL_FREQUENCY"); + if (full_freq_string != NULL) { + int full_freq = atoi(full_freq_string); + if (full_freq > 0) + GC_full_freq = full_freq; + } + } +# endif + { + char * interval_string = GETENV("GC_LARGE_ALLOC_WARN_INTERVAL"); + if (0 != interval_string) { + long interval = atol(interval_string); + if (interval <= 0) { + WARN("GC_LARGE_ALLOC_WARN_INTERVAL environment variable has " + "bad value: Ignoring\n", 0); + } else { + GC_large_alloc_warn_interval = interval; + } + } + } + { + char * space_divisor_string = GETENV("GC_FREE_SPACE_DIVISOR"); + if (space_divisor_string != NULL) { + int space_divisor = atoi(space_divisor_string); + if (space_divisor > 0) + GC_free_space_divisor = (word)space_divisor; + } + } +# ifdef USE_MUNMAP + { + char * string = GETENV("GC_UNMAP_THRESHOLD"); + if (string != NULL) { + if (*string == '0' && *(string + 1) == '\0') { + /* "0" is used to disable unmapping. */ + GC_unmap_threshold = 0; + } else { + int unmap_threshold = atoi(string); + if (unmap_threshold > 0) + GC_unmap_threshold = unmap_threshold; + } + } + } + { + char * string = GETENV("GC_FORCE_UNMAP_ON_GCOLLECT"); + if (string != NULL) { + if (*string == '0' && *(string + 1) == '\0') { + /* "0" is used to turn off the mode. */ + GC_force_unmap_on_gcollect = FALSE; + } else { + GC_force_unmap_on_gcollect = TRUE; + } + } + } + { + char * string = GETENV("GC_USE_ENTIRE_HEAP"); + if (string != NULL) { + if (*string == '0' && *(string + 1) == '\0') { + /* "0" is used to turn off the mode. */ + GC_use_entire_heap = FALSE; + } else { + GC_use_entire_heap = TRUE; + } + } + } +# endif + maybe_install_looping_handler(); +# if ALIGNMENT > GC_DS_TAGS + /* Adjust normal object descriptor for extra allocation. */ + if (EXTRA_BYTES != 0) + GC_obj_kinds[NORMAL].ok_descriptor = (word)(-ALIGNMENT) | GC_DS_LENGTH; +# endif + GC_exclude_static_roots_inner(beginGC_arrays, endGC_arrays); + GC_exclude_static_roots_inner(beginGC_obj_kinds, endGC_obj_kinds); +# ifdef SEPARATE_GLOBALS + GC_exclude_static_roots_inner(beginGC_objfreelist, endGC_objfreelist); + GC_exclude_static_roots_inner(beginGC_aobjfreelist, endGC_aobjfreelist); +# endif +# if defined(USE_PROC_FOR_LIBRARIES) && defined(GC_LINUX_THREADS) + WARN("USE_PROC_FOR_LIBRARIES + GC_LINUX_THREADS performs poorly.\n", 0); + /* If thread stacks are cached, they tend to be scanned in */ + /* entirety as part of the root set. This wil grow them to */ + /* maximum size, and is generally not desirable. */ +# endif +# if defined(SEARCH_FOR_DATA_START) + GC_init_linux_data_start(); +# endif +# if defined(NETBSD) && defined(__ELF__) + GC_init_netbsd_elf(); +# endif +# if !defined(THREADS) || defined(GC_PTHREADS) \ + || defined(GC_WIN32_THREADS) || defined(GC_SOLARIS_THREADS) + if (GC_stackbottom == 0) { + GC_stackbottom = GC_get_main_stack_base(); +# if (defined(LINUX) || defined(HPUX)) && defined(IA64) + GC_register_stackbottom = GC_get_register_stack_base(); +# endif + } else { +# if (defined(LINUX) || defined(HPUX)) && defined(IA64) + if (GC_register_stackbottom == 0) { + WARN("GC_register_stackbottom should be set with GC_stackbottom\n", 0); + /* The following may fail, since we may rely on */ + /* alignment properties that may not hold with a user set */ + /* GC_stackbottom. */ + GC_register_stackbottom = GC_get_register_stack_base(); + } +# endif + } +# endif +# if !defined(CPPCHECK) + GC_STATIC_ASSERT(sizeof(ptr_t) == sizeof(word)); + GC_STATIC_ASSERT(sizeof(signed_word) == sizeof(word)); +# if !defined(_AUX_SOURCE) || defined(__GNUC__) + GC_STATIC_ASSERT((word)(-1) > (word)0); + /* word should be unsigned */ +# endif + /* We no longer check for ((void*)(-1) > NULL) since all pointers */ + /* are explicitly cast to word in every less/greater comparison. */ + GC_STATIC_ASSERT((signed_word)(-1) < (signed_word)0); +# endif + GC_STATIC_ASSERT(sizeof (struct hblk) == HBLKSIZE); +# ifndef THREADS + GC_ASSERT(!((word)GC_stackbottom HOTTER_THAN (word)GC_approx_sp())); +# endif +# ifndef GC_DISABLE_INCREMENTAL + if (GC_incremental || 0 != GETENV("GC_ENABLE_INCREMENTAL")) { + /* For GWW_VDB on Win32, this needs to happen before any */ + /* heap memory is allocated. */ + GC_incremental = GC_dirty_init(); + GC_ASSERT(GC_bytes_allocd == 0); + } +# endif + + /* Add initial guess of root sets. Do this first, since sbrk(0) */ + /* might be used. */ + if (GC_REGISTER_MAIN_STATIC_DATA()) GC_register_data_segments(); + GC_init_headers(); + GC_bl_init(); + GC_mark_init(); + { + char * sz_str = GETENV("GC_INITIAL_HEAP_SIZE"); + if (sz_str != NULL) { + initial_heap_sz = GC_parse_mem_size_arg(sz_str); + if (initial_heap_sz <= MINHINCR * HBLKSIZE) { + WARN("Bad initial heap size %s - ignoring it.\n", sz_str); + } + } + } + { + char * sz_str = GETENV("GC_MAXIMUM_HEAP_SIZE"); + if (sz_str != NULL) { + word max_heap_sz = GC_parse_mem_size_arg(sz_str); + if (max_heap_sz < initial_heap_sz) { + WARN("Bad maximum heap size %s - ignoring it.\n", sz_str); + } + if (0 == GC_max_retries) GC_max_retries = 2; + GC_set_max_heap_size(max_heap_sz); + } + } + if (!GC_expand_hp_inner(divHBLKSZ(initial_heap_sz))) { + GC_err_printf("Can't start up: not enough memory\n"); + EXIT(); + } else { + GC_requested_heapsize += initial_heap_sz; + } + if (GC_all_interior_pointers) + GC_initialize_offsets(); + GC_register_displacement_inner(0L); +# if defined(GC_LINUX_THREADS) && defined(REDIRECT_MALLOC) + if (!GC_all_interior_pointers) { + /* TLS ABI uses pointer-sized offsets for dtv. */ + GC_register_displacement_inner(sizeof(void *)); + } +# endif + GC_init_size_map(); +# ifdef PCR + if (PCR_IL_Lock(PCR_Bool_false, PCR_allSigsBlocked, PCR_waitForever) + != PCR_ERes_okay) { + ABORT("Can't lock load state"); + } else if (PCR_IL_Unlock() != PCR_ERes_okay) { + ABORT("Can't unlock load state"); + } + PCR_IL_Unlock(); + GC_pcr_install(); +# endif + GC_is_initialized = TRUE; +# if defined(GC_PTHREADS) || defined(GC_WIN32_THREADS) +# if defined(GC_ASSERTIONS) && defined(GC_ALWAYS_MULTITHREADED) + DCL_LOCK_STATE; + LOCK(); /* just to set GC_lock_holder */ + GC_thr_init(); + UNLOCK(); +# else + GC_thr_init(); +# endif +# ifdef PARALLEL_MARK + /* Actually start helper threads. */ + GC_start_mark_threads_inner(); +# endif +# endif + COND_DUMP; + /* Get black list set up and/or incremental GC started */ + if (!GC_dont_precollect || GC_incremental) { +# if defined(GC_ASSERTIONS) && defined(GC_ALWAYS_MULTITHREADED) + LOCK(); + GC_gcollect_inner(); + UNLOCK(); +# else + GC_gcollect_inner(); +# endif + } +# ifdef STUBBORN_ALLOC + GC_stubborn_init(); +# endif +# ifndef DONT_USE_ATEXIT + if (GC_find_leak) { + /* This is to give us at least one chance to detect leaks. */ + /* This may report some very benign leaks, but ... */ + atexit(GC_exit_check); + } +# endif + + /* The rest of this again assumes we don't really hold */ + /* the allocation lock. */ +# if defined(PARALLEL_MARK) || defined(THREAD_LOCAL_ALLOC) \ + || (defined(GC_ALWAYS_MULTITHREADED) && defined(GC_WIN32_THREADS) \ + && !defined(GC_NO_THREADS_DISCOVERY)) + /* Make sure marker threads are started and thread local */ + /* allocation is initialized, in case we didn't get */ + /* called from GC_init_parallel. */ + GC_init_parallel(); +# endif /* PARALLEL_MARK || THREAD_LOCAL_ALLOC */ + +# if defined(DYNAMIC_LOADING) && defined(DARWIN) + /* This must be called WITHOUT the allocation lock held */ + /* and before any threads are created. */ + GC_init_dyld(); +# endif + RESTORE_CANCEL(cancel_state); +} + +GC_API void GC_CALL GC_enable_incremental(void) +{ +# if !defined(GC_DISABLE_INCREMENTAL) && !defined(KEEP_BACK_PTRS) + DCL_LOCK_STATE; + /* If we are keeping back pointers, the GC itself dirties all */ + /* pages on which objects have been marked, making */ + /* incremental GC pointless. */ + if (!GC_find_leak && 0 == GETENV("GC_DISABLE_INCREMENTAL")) { + LOCK(); + if (!GC_incremental) { + GC_setpagesize(); + /* if (GC_no_win32_dlls) goto out; Should be win32S test? */ + maybe_install_looping_handler(); /* Before write fault handler! */ + if (!GC_is_initialized) { + UNLOCK(); + GC_incremental = TRUE; /* indicate intention to turn it on */ + GC_init(); + LOCK(); + } else { + GC_incremental = GC_dirty_init(); + } + if (GC_incremental && !GC_dont_gc) { + /* Can't easily do it if GC_dont_gc. */ + IF_CANCEL(int cancel_state;) + + DISABLE_CANCEL(cancel_state); + if (GC_bytes_allocd > 0) { + /* There may be unmarked reachable objects. */ + GC_gcollect_inner(); + } + /* else we're OK in assuming everything's */ + /* clean since nothing can point to an */ + /* unmarked object. */ + GC_read_dirty(); + RESTORE_CANCEL(cancel_state); + } + } + UNLOCK(); + return; + } +# endif + GC_init(); +} + +#if defined(THREADS) + GC_API void GC_CALL GC_start_mark_threads(void) + { +# if defined(PARALLEL_MARK) && defined(CAN_HANDLE_FORK) + IF_CANCEL(int cancel_state;) + + DISABLE_CANCEL(cancel_state); + GC_start_mark_threads_inner(); + RESTORE_CANCEL(cancel_state); +# else + /* No action since parallel markers are disabled (or no POSIX fork). */ + GC_ASSERT(I_DONT_HOLD_LOCK()); +# endif + } +#endif + +#if defined(MSWIN32) || defined(MSWINCE) + +# if defined(_MSC_VER) && defined(_DEBUG) && !defined(MSWINCE) +# include +# endif + + STATIC HANDLE GC_log = 0; + + void GC_deinit(void) + { +# ifdef THREADS + if (GC_is_initialized) { + DeleteCriticalSection(&GC_write_cs); + } +# endif + } + +# ifdef THREADS +# if defined(PARALLEL_MARK) && !defined(GC_ALWAYS_MULTITHREADED) +# define IF_NEED_TO_LOCK(x) if (GC_parallel || GC_need_to_lock) x +# else +# define IF_NEED_TO_LOCK(x) if (GC_need_to_lock) x +# endif +# else +# define IF_NEED_TO_LOCK(x) +# endif /* !THREADS */ + + STATIC HANDLE GC_CreateLogFile(void) + { + HANDLE hFile; + TCHAR *logPath; + BOOL appendToFile = FALSE; +# if !defined(NO_GETENV_WIN32) || !defined(OLD_WIN32_LOG_FILE) + TCHAR pathBuf[_MAX_PATH + 0x10]; /* buffer for path + ext */ + + logPath = pathBuf; +# endif + + /* Use GetEnvironmentVariable instead of GETENV() for unicode support. */ +# ifndef NO_GETENV_WIN32 + if (GetEnvironmentVariable(TEXT("GC_LOG_FILE"), pathBuf, + _MAX_PATH + 1) - 1U < (DWORD)_MAX_PATH) { + appendToFile = TRUE; + } else +# endif + /* else */ { + /* Env var not found or its value too long. */ +# ifdef OLD_WIN32_LOG_FILE + logPath = TEXT(GC_LOG_STD_NAME); +# else + int len = (int)GetModuleFileName(NULL /* hModule */, pathBuf, + _MAX_PATH + 1); + /* If GetModuleFileName() has failed then len is 0. */ + if (len > 4 && pathBuf[len - 4] == (TCHAR)'.') { + len -= 4; /* strip executable file extension */ + } + BCOPY(TEXT(".") TEXT(GC_LOG_STD_NAME), &pathBuf[len], + sizeof(TEXT(".") TEXT(GC_LOG_STD_NAME))); +# endif + } + + hFile = CreateFile(logPath, GENERIC_WRITE, FILE_SHARE_READ, + NULL /* lpSecurityAttributes */, + appendToFile ? OPEN_ALWAYS : CREATE_ALWAYS, + GC_print_stats == VERBOSE ? FILE_ATTRIBUTE_NORMAL : + /* immediately flush writes unless very verbose */ + FILE_ATTRIBUTE_NORMAL | FILE_FLAG_WRITE_THROUGH, + NULL /* hTemplateFile */); +# ifndef NO_GETENV_WIN32 + if (appendToFile && hFile != INVALID_HANDLE_VALUE) { + LONG posHigh = 0; + (void)SetFilePointer(hFile, 0, &posHigh, FILE_END); + /* Seek to file end (ignoring any error) */ + } +# endif + return hFile; + } + + STATIC int GC_write(const char *buf, size_t len) + { + BOOL res; + DWORD written; +# if defined(THREADS) && defined(GC_ASSERTIONS) + static GC_bool inside_write = FALSE; + /* to prevent infinite recursion at abort. */ + if (inside_write) + return -1; +# endif + + if (len == 0) + return 0; + IF_NEED_TO_LOCK(EnterCriticalSection(&GC_write_cs)); +# if defined(THREADS) && defined(GC_ASSERTIONS) + if (GC_write_disabled) { + inside_write = TRUE; + ABORT("Assertion failure: GC_write called with write_disabled"); + } +# endif + if (GC_log == 0) { + GC_log = GC_CreateLogFile(); + } + if (GC_log == INVALID_HANDLE_VALUE) { + IF_NEED_TO_LOCK(LeaveCriticalSection(&GC_write_cs)); +# ifdef NO_DEBUGGING + /* Ignore open log failure (e.g., it might be caused by */ + /* read-only folder of the client application). */ + return 0; +# else + return -1; +# endif + } + res = WriteFile(GC_log, buf, (DWORD)len, &written, NULL); +# if defined(_MSC_VER) && defined(_DEBUG) +# ifdef MSWINCE + /* There is no CrtDbgReport() in WinCE */ + { + WCHAR wbuf[1024]; + /* Always use Unicode variant of OutputDebugString() */ + wbuf[MultiByteToWideChar(CP_ACP, 0 /* dwFlags */, + buf, len, wbuf, + sizeof(wbuf) / sizeof(wbuf[0]) - 1)] = 0; + OutputDebugStringW(wbuf); + } +# else + _CrtDbgReport(_CRT_WARN, NULL, 0, NULL, "%.*s", len, buf); +# endif +# endif + IF_NEED_TO_LOCK(LeaveCriticalSection(&GC_write_cs)); + return res ? (int)written : -1; + } + + /* FIXME: This is pretty ugly ... */ +# define WRITE(f, buf, len) GC_write(buf, len) + +#elif defined(OS2) || defined(MACOS) + STATIC FILE * GC_stdout = NULL; + STATIC FILE * GC_stderr = NULL; + STATIC FILE * GC_log = NULL; + + /* Initialize GC_log (and the friends) passed to GC_write(). */ + STATIC void GC_set_files(void) + { + if (GC_stdout == NULL) { + GC_stdout = stdout; + } + if (GC_stderr == NULL) { + GC_stderr = stderr; + } + if (GC_log == NULL) { + GC_log = stderr; + } + } + + GC_INLINE int GC_write(FILE *f, const char *buf, size_t len) + { + int res = fwrite(buf, 1, len, f); + fflush(f); + return res; + } + +# define WRITE(f, buf, len) (GC_set_files(), GC_write(f, buf, len)) + +#elif defined(GC_ANDROID_LOG) + +# include + +# ifndef GC_ANDROID_LOG_TAG +# define GC_ANDROID_LOG_TAG "BDWGC" +# endif + +# define GC_stdout ANDROID_LOG_DEBUG +# define GC_stderr ANDROID_LOG_ERROR +# define GC_log GC_stdout + +# define WRITE(level, buf, unused_len) \ + __android_log_write(level, GC_ANDROID_LOG_TAG, buf) + +#else +# if !defined(AMIGA) && !defined(__CC_ARM) +# include +# endif + + STATIC int GC_write(int fd, const char *buf, size_t len) + { +# if defined(ECOS) || defined(NOSYS) +# ifdef ECOS + /* FIXME: This seems to be defined nowhere at present. */ + /* _Jv_diag_write(buf, len); */ +# else + /* No writing. */ +# endif + return len; +# else + int bytes_written = 0; + IF_CANCEL(int cancel_state;) + + DISABLE_CANCEL(cancel_state); + while ((size_t)bytes_written < len) { +# ifdef GC_SOLARIS_THREADS + int result = syscall(SYS_write, fd, buf + bytes_written, + len - bytes_written); +# else + int result = write(fd, buf + bytes_written, len - bytes_written); +# endif + + if (-1 == result) { + RESTORE_CANCEL(cancel_state); + return(result); + } + bytes_written += result; + } + RESTORE_CANCEL(cancel_state); + return(bytes_written); +# endif + } + +# define WRITE(f, buf, len) GC_write(f, buf, len) +#endif /* !MSWIN32 && !OS2 && !MACOS && !GC_ANDROID_LOG */ + +#define BUFSZ 1024 + +#if defined(DJGPP) || defined(__STRICT_ANSI__) + /* vsnprintf is missing in DJGPP (v2.0.3) */ +# define GC_VSNPRINTF(buf, bufsz, format, args) vsprintf(buf, format, args) +#elif defined(_MSC_VER) +# ifdef MSWINCE + /* _vsnprintf is deprecated in WinCE */ +# define GC_VSNPRINTF StringCchVPrintfA +# else +# define GC_VSNPRINTF _vsnprintf +# endif +#else +# define GC_VSNPRINTF vsnprintf +#endif + +/* A version of printf that is unlikely to call malloc, and is thus safer */ +/* to call from the collector in case malloc has been bound to GC_malloc. */ +/* Floating point arguments and formats should be avoided, since FP */ +/* conversion is more likely to allocate memory. */ +/* Assumes that no more than BUFSZ-1 characters are written at once. */ +#define GC_PRINTF_FILLBUF(buf, format) \ + do { \ + va_list args; \ + va_start(args, format); \ + (buf)[sizeof(buf) - 1] = 0x15; /* guard */ \ + (void)GC_VSNPRINTF(buf, sizeof(buf) - 1, format, args); \ + va_end(args); \ + if ((buf)[sizeof(buf) - 1] != 0x15) \ + ABORT("GC_printf clobbered stack"); \ + } while (0) + +void GC_printf(const char *format, ...) +{ + if (!GC_quiet) { + char buf[BUFSZ + 1]; + + GC_PRINTF_FILLBUF(buf, format); +# ifdef NACL + (void)WRITE(GC_stdout, buf, strlen(buf)); + /* Ignore errors silently. */ +# else + if (WRITE(GC_stdout, buf, strlen(buf)) < 0) + ABORT("write to stdout failed"); +# endif + } +} + +void GC_err_printf(const char *format, ...) +{ + char buf[BUFSZ + 1]; + + GC_PRINTF_FILLBUF(buf, format); + GC_err_puts(buf); +} + +void GC_log_printf(const char *format, ...) +{ + char buf[BUFSZ + 1]; + + GC_PRINTF_FILLBUF(buf, format); +# ifdef NACL + (void)WRITE(GC_log, buf, strlen(buf)); +# else + if (WRITE(GC_log, buf, strlen(buf)) < 0) + ABORT("write to GC log failed"); +# endif +} + +#ifndef GC_ANDROID_LOG + +# define GC_warn_printf GC_err_printf + +#else + + GC_INNER void GC_info_log_printf(const char *format, ...) + { + char buf[BUFSZ + 1]; + + GC_PRINTF_FILLBUF(buf, format); + (void)WRITE(ANDROID_LOG_INFO, buf, 0 /* unused */); + } + + GC_INNER void GC_verbose_log_printf(const char *format, ...) + { + char buf[BUFSZ + 1]; + + GC_PRINTF_FILLBUF(buf, format); + (void)WRITE(ANDROID_LOG_VERBOSE, buf, 0); /* ignore write errors */ + } + + STATIC void GC_warn_printf(const char *format, ...) + { + char buf[BUFSZ + 1]; + + GC_PRINTF_FILLBUF(buf, format); + (void)WRITE(ANDROID_LOG_WARN, buf, 0); + } + +#endif /* GC_ANDROID_LOG */ + +void GC_err_puts(const char *s) +{ + (void)WRITE(GC_stderr, s, strlen(s)); /* ignore errors */ +} + +STATIC void GC_CALLBACK GC_default_warn_proc(char *msg, GC_word arg) +{ + /* TODO: Add assertion on arg comply with msg (format). */ + GC_warn_printf(msg, arg); +} + +GC_INNER GC_warn_proc GC_current_warn_proc = GC_default_warn_proc; + +/* This is recommended for production code (release). */ +GC_API void GC_CALLBACK GC_ignore_warn_proc(char *msg, GC_word arg) +{ + if (GC_print_stats) { + /* Don't ignore warnings if stats printing is on. */ + GC_default_warn_proc(msg, arg); + } +} + +GC_API void GC_CALL GC_set_warn_proc(GC_warn_proc p) +{ + DCL_LOCK_STATE; + GC_ASSERT(NONNULL_ARG_NOT_NULL(p)); +# ifdef GC_WIN32_THREADS +# ifdef CYGWIN32 + /* Need explicit GC_INIT call */ + GC_ASSERT(GC_is_initialized); +# else + if (!GC_is_initialized) GC_init(); +# endif +# endif + LOCK(); + GC_current_warn_proc = p; + UNLOCK(); +} + +GC_API GC_warn_proc GC_CALL GC_get_warn_proc(void) +{ + GC_warn_proc result; + DCL_LOCK_STATE; + LOCK(); + result = GC_current_warn_proc; + UNLOCK(); + return(result); +} + +#if !defined(PCR) && !defined(SMALL_CONFIG) + /* Print (or display) a message before abnormal exit (including */ + /* abort). Invoked from ABORT(msg) macro (there msg is non-NULL) */ + /* and from EXIT() macro (msg is NULL in that case). */ + STATIC void GC_CALLBACK GC_default_on_abort(const char *msg) + { + GC_find_leak = FALSE; /* disable at-exit GC_gcollect() */ + + if (msg != NULL) { +# if defined(MSWIN32) + GC_win32_MessageBoxA(msg, "Fatal error in GC", MB_ICONERROR | MB_OK); + /* Also duplicate msg to GC log file. */ +# endif + +# ifndef GC_ANDROID_LOG + /* Avoid calling GC_err_printf() here, as GC_on_abort() could be */ + /* called from it. Note 1: this is not an atomic output. */ + /* Note 2: possible write errors are ignored. */ +# if defined(THREADS) && defined(GC_ASSERTIONS) \ + && (defined(MSWIN32) || defined(MSWINCE)) + if (!GC_write_disabled) +# endif + { + if (WRITE(GC_stderr, (void *)msg, strlen(msg)) >= 0) + (void)WRITE(GC_stderr, (void *)("\n"), 1); + } +# else + __android_log_assert("*" /* cond */, GC_ANDROID_LOG_TAG, "%s\n", msg); +# endif + } + +# if !defined(NO_DEBUGGING) && !defined(GC_ANDROID_LOG) + if (GETENV("GC_LOOP_ON_ABORT") != NULL) { + /* In many cases it's easier to debug a running process. */ + /* It's arguably nicer to sleep, but that makes it harder */ + /* to look at the thread if the debugger doesn't know much */ + /* about threads. */ + for(;;) { + /* Empty */ + } + } +# endif + } + + GC_abort_func GC_on_abort = GC_default_on_abort; + + GC_API void GC_CALL GC_set_abort_func(GC_abort_func fn) + { + DCL_LOCK_STATE; + GC_ASSERT(NONNULL_ARG_NOT_NULL(fn)); + LOCK(); + GC_on_abort = fn; + UNLOCK(); + } + + GC_API GC_abort_func GC_CALL GC_get_abort_func(void) + { + GC_abort_func fn; + DCL_LOCK_STATE; + LOCK(); + fn = GC_on_abort; + UNLOCK(); + return fn; + } +#endif /* !SMALL_CONFIG */ + +GC_API void GC_CALL GC_enable(void) +{ + DCL_LOCK_STATE; + + LOCK(); + GC_ASSERT(GC_dont_gc != 0); /* ensure no counter underflow */ + GC_dont_gc--; + UNLOCK(); +} + +GC_API void GC_CALL GC_disable(void) +{ + DCL_LOCK_STATE; + LOCK(); + GC_dont_gc++; + UNLOCK(); +} + +GC_API int GC_CALL GC_is_disabled(void) +{ + return GC_dont_gc != 0; +} + +/* Helper procedures for new kind creation. */ +GC_API void ** GC_CALL GC_new_free_list_inner(void) +{ + void *result; + + GC_ASSERT(I_HOLD_LOCK()); + result = GC_INTERNAL_MALLOC((MAXOBJGRANULES+1) * sizeof(ptr_t), PTRFREE); + if (NULL == result) ABORT("Failed to allocate freelist for new kind"); + BZERO(result, (MAXOBJGRANULES+1)*sizeof(ptr_t)); + return result; +} + +GC_API void ** GC_CALL GC_new_free_list(void) +{ + void *result; + DCL_LOCK_STATE; + LOCK(); + result = GC_new_free_list_inner(); + UNLOCK(); + return result; +} + +GC_API unsigned GC_CALL GC_new_kind_inner(void **fl, GC_word descr, + int adjust, int clear) +{ + unsigned result = GC_n_kinds; + + GC_ASSERT(adjust == FALSE || adjust == TRUE); + GC_ASSERT(clear == FALSE || clear == TRUE); + if (result < MAXOBJKINDS) { + GC_n_kinds++; + GC_obj_kinds[result].ok_freelist = fl; + GC_obj_kinds[result].ok_reclaim_list = 0; + GC_obj_kinds[result].ok_descriptor = descr; + GC_obj_kinds[result].ok_relocate_descr = adjust; + GC_obj_kinds[result].ok_init = (GC_bool)clear; +# ifdef ENABLE_DISCLAIM + GC_obj_kinds[result].ok_mark_unconditionally = FALSE; + GC_obj_kinds[result].ok_disclaim_proc = 0; +# endif + } else { + ABORT("Too many kinds"); + } + return result; +} + +GC_API unsigned GC_CALL GC_new_kind(void **fl, GC_word descr, int adjust, + int clear) +{ + unsigned result; + DCL_LOCK_STATE; + LOCK(); + result = GC_new_kind_inner(fl, descr, adjust, clear); + UNLOCK(); + return result; +} + +GC_API unsigned GC_CALL GC_new_proc_inner(GC_mark_proc proc) +{ + unsigned result = GC_n_mark_procs; + + if (result < MAX_MARK_PROCS) { + GC_n_mark_procs++; + GC_mark_procs[result] = proc; + } else { + ABORT("Too many mark procedures"); + } + return result; +} + +GC_API unsigned GC_CALL GC_new_proc(GC_mark_proc proc) +{ + unsigned result; + DCL_LOCK_STATE; + LOCK(); + result = GC_new_proc_inner(proc); + UNLOCK(); + return result; +} + +GC_API void * GC_CALL GC_call_with_alloc_lock(GC_fn_type fn, void *client_data) +{ + void * result; + DCL_LOCK_STATE; + +# ifdef THREADS + LOCK(); +# endif + result = (*fn)(client_data); +# ifdef THREADS + UNLOCK(); +# endif + return(result); +} + +GC_API void * GC_CALL GC_call_with_stack_base(GC_stack_base_func fn, void *arg) +{ + struct GC_stack_base base; + void *result; + + base.mem_base = (void *)&base; +# ifdef IA64 + base.reg_base = (void *)GC_save_regs_in_stack(); + /* Unnecessarily flushes register stack, */ + /* but that probably doesn't hurt. */ +# endif + result = fn(&base, arg); + /* Strongly discourage the compiler from treating the above */ + /* as a tail call. */ + GC_noop1((word)(&base)); + return result; +} + +#ifndef THREADS + +GC_INNER ptr_t GC_blocked_sp = NULL; + /* NULL value means we are not inside GC_do_blocking() call. */ +# ifdef IA64 + STATIC ptr_t GC_blocked_register_sp = NULL; +# endif + +GC_INNER struct GC_traced_stack_sect_s *GC_traced_stack_sect = NULL; + +/* This is nearly the same as in win32_threads.c */ +GC_API void * GC_CALL GC_call_with_gc_active(GC_fn_type fn, + void * client_data) +{ + struct GC_traced_stack_sect_s stacksect; + GC_ASSERT(GC_is_initialized); + + /* Adjust our stack base value (this could happen if */ + /* GC_get_main_stack_base() is unimplemented or broken for */ + /* the platform). */ + if ((word)GC_stackbottom HOTTER_THAN (word)(&stacksect)) + GC_stackbottom = (ptr_t)(&stacksect); + + if (GC_blocked_sp == NULL) { + /* We are not inside GC_do_blocking() - do nothing more. */ + client_data = fn(client_data); + /* Prevent treating the above as a tail call. */ + GC_noop1((word)(&stacksect)); + return client_data; /* result */ + } + + /* Setup new "stack section". */ + stacksect.saved_stack_ptr = GC_blocked_sp; +# ifdef IA64 + /* This is the same as in GC_call_with_stack_base(). */ + stacksect.backing_store_end = GC_save_regs_in_stack(); + /* Unnecessarily flushes register stack, */ + /* but that probably doesn't hurt. */ + stacksect.saved_backing_store_ptr = GC_blocked_register_sp; +# endif + stacksect.prev = GC_traced_stack_sect; + GC_blocked_sp = NULL; + GC_traced_stack_sect = &stacksect; + + client_data = fn(client_data); + GC_ASSERT(GC_blocked_sp == NULL); + GC_ASSERT(GC_traced_stack_sect == &stacksect); + +# if defined(CPPCHECK) + GC_noop1((word)GC_traced_stack_sect - (word)GC_blocked_sp); +# endif + /* Restore original "stack section". */ + GC_traced_stack_sect = stacksect.prev; +# ifdef IA64 + GC_blocked_register_sp = stacksect.saved_backing_store_ptr; +# endif + GC_blocked_sp = stacksect.saved_stack_ptr; + + return client_data; /* result */ +} + +/* This is nearly the same as in win32_threads.c */ +STATIC void GC_do_blocking_inner(ptr_t data, void * context GC_ATTR_UNUSED) +{ + struct blocking_data * d = (struct blocking_data *) data; + GC_ASSERT(GC_is_initialized); + GC_ASSERT(GC_blocked_sp == NULL); +# ifdef SPARC + GC_blocked_sp = GC_save_regs_in_stack(); +# else + GC_blocked_sp = (ptr_t) &d; /* save approx. sp */ +# endif +# ifdef IA64 + GC_blocked_register_sp = GC_save_regs_in_stack(); +# endif + + d -> client_data = (d -> fn)(d -> client_data); + +# ifdef SPARC + GC_ASSERT(GC_blocked_sp != NULL); +# else + GC_ASSERT(GC_blocked_sp == (ptr_t)(&d)); +# endif +# if defined(CPPCHECK) + GC_noop1((word)GC_blocked_sp); +# endif + GC_blocked_sp = NULL; +} + +#endif /* !THREADS */ + +/* Wrapper for functions that are likely to block (or, at least, do not */ +/* allocate garbage collected memory and/or manipulate pointers to the */ +/* garbage collected heap) for an appreciable length of time. */ +/* In the single threaded case, GC_do_blocking() (together */ +/* with GC_call_with_gc_active()) might be used to make stack scanning */ +/* more precise (i.e. scan only stack frames of functions that allocate */ +/* garbage collected memory and/or manipulate pointers to the garbage */ +/* collected heap). */ +GC_API void * GC_CALL GC_do_blocking(GC_fn_type fn, void * client_data) +{ + struct blocking_data my_data; + + my_data.fn = fn; + my_data.client_data = client_data; + GC_with_callee_saves_pushed(GC_do_blocking_inner, (ptr_t)(&my_data)); + return my_data.client_data; /* result */ +} + +#if !defined(NO_DEBUGGING) + GC_API void GC_CALL GC_dump(void) + { + GC_printf("***Static roots:\n"); + GC_print_static_roots(); + GC_printf("\n***Heap sections:\n"); + GC_print_heap_sects(); + GC_printf("\n***Free blocks:\n"); + GC_print_hblkfreelist(); + GC_printf("\n***Blocks in use:\n"); + GC_print_block_list(); + } +#endif /* !NO_DEBUGGING */ + +static void block_add_size(struct hblk *h, word pbytes) +{ + hdr *hhdr = HDR(h); + *(word *)pbytes += (WORDS_TO_BYTES((word)hhdr->hb_sz) + (HBLKSIZE - 1)) + & ~(word)(HBLKSIZE - 1); +} + +GC_API size_t GC_CALL GC_get_memory_use(void) +{ + word bytes = 0; + DCL_LOCK_STATE; + + LOCK(); + GC_apply_to_all_blocks(block_add_size, (word)(&bytes)); + UNLOCK(); + return (size_t)bytes; +} + +/* Getter functions for the public Read-only variables. */ + +/* GC_get_gc_no() is unsynchronized and should be typically called */ +/* inside the context of GC_call_with_alloc_lock() to prevent data */ +/* races (on multiprocessors). */ +GC_API GC_word GC_CALL GC_get_gc_no(void) +{ + return GC_gc_no; +} + +#ifdef THREADS + GC_API int GC_CALL GC_get_parallel(void) + { + /* GC_parallel is initialized at start-up. */ + return GC_parallel; + } + + GC_INNER GC_on_thread_event_proc GC_on_thread_event = 0; + + GC_API void GC_CALL GC_set_on_thread_event(GC_on_thread_event_proc fn) + { + /* fn may be 0 (means no event notifier). */ + DCL_LOCK_STATE; + LOCK(); + GC_on_thread_event = fn; + UNLOCK(); + } + + GC_API GC_on_thread_event_proc GC_CALL GC_get_on_thread_event(void) + { + GC_on_thread_event_proc fn; + DCL_LOCK_STATE; + LOCK(); + fn = GC_on_thread_event; + UNLOCK(); + return fn; + } +#endif /* THREADS */ + +/* Setter and getter functions for the public R/W function variables. */ +/* These functions are synchronized (like GC_set_warn_proc() and */ +/* GC_get_warn_proc()). */ + +GC_API void GC_CALL GC_set_oom_fn(GC_oom_func fn) +{ + GC_ASSERT(NONNULL_ARG_NOT_NULL(fn)); + DCL_LOCK_STATE; + LOCK(); + GC_oom_fn = fn; + UNLOCK(); +} + +GC_API GC_oom_func GC_CALL GC_get_oom_fn(void) +{ + GC_oom_func fn; + DCL_LOCK_STATE; + LOCK(); + fn = GC_oom_fn; + UNLOCK(); + return fn; +} + +GC_API void GC_CALL GC_set_on_heap_resize(GC_on_heap_resize_proc fn) +{ + /* fn may be 0 (means no event notifier). */ + DCL_LOCK_STATE; + LOCK(); + GC_on_heap_resize = fn; + UNLOCK(); +} + +GC_API GC_on_heap_resize_proc GC_CALL GC_get_on_heap_resize(void) +{ + GC_on_heap_resize_proc fn; + DCL_LOCK_STATE; + LOCK(); + fn = GC_on_heap_resize; + UNLOCK(); + return fn; +} + +GC_API void GC_CALL GC_set_finalizer_notifier(GC_finalizer_notifier_proc fn) +{ + /* fn may be 0 (means no finalizer notifier). */ + DCL_LOCK_STATE; + LOCK(); + GC_finalizer_notifier = fn; + UNLOCK(); +} + +GC_API GC_finalizer_notifier_proc GC_CALL GC_get_finalizer_notifier(void) +{ + GC_finalizer_notifier_proc fn; + DCL_LOCK_STATE; + LOCK(); + fn = GC_finalizer_notifier; + UNLOCK(); + return fn; +} + +/* Setter and getter functions for the public numeric R/W variables. */ +/* It is safe to call these functions even before GC_INIT(). */ +/* These functions are unsynchronized and should be typically called */ +/* inside the context of GC_call_with_alloc_lock() (if called after */ +/* GC_INIT()) to prevent data races (unless it is guaranteed the */ +/* collector is not multi-threaded at that execution point). */ + +GC_API void GC_CALL GC_set_find_leak(int value) +{ + /* value is of boolean type. */ + GC_find_leak = value; +} + +GC_API int GC_CALL GC_get_find_leak(void) +{ + return GC_find_leak; +} + +GC_API void GC_CALL GC_set_all_interior_pointers(int value) +{ + DCL_LOCK_STATE; + + GC_all_interior_pointers = value ? 1 : 0; + if (GC_is_initialized) { + /* It is not recommended to change GC_all_interior_pointers value */ + /* after GC is initialized but it seems GC could work correctly */ + /* even after switching the mode. */ + LOCK(); + GC_initialize_offsets(); /* NOTE: this resets manual offsets as well */ + if (!GC_all_interior_pointers) + GC_bl_init_no_interiors(); + UNLOCK(); + } +} + +GC_API int GC_CALL GC_get_all_interior_pointers(void) +{ + return GC_all_interior_pointers; +} + +GC_API void GC_CALL GC_set_finalize_on_demand(int value) +{ + GC_ASSERT(value != -1); + /* value is of boolean type. */ + GC_finalize_on_demand = value; +} + +GC_API int GC_CALL GC_get_finalize_on_demand(void) +{ + return GC_finalize_on_demand; +} + +GC_API void GC_CALL GC_set_java_finalization(int value) +{ + GC_ASSERT(value != -1); + /* value is of boolean type. */ + GC_java_finalization = value; +} + +GC_API int GC_CALL GC_get_java_finalization(void) +{ + return GC_java_finalization; +} + +GC_API void GC_CALL GC_set_dont_expand(int value) +{ + GC_ASSERT(value != -1); + /* value is of boolean type. */ + GC_dont_expand = value; +} + +GC_API int GC_CALL GC_get_dont_expand(void) +{ + return GC_dont_expand; +} + +GC_API void GC_CALL GC_set_no_dls(int value) +{ + GC_ASSERT(value != -1); + /* value is of boolean type. */ + GC_no_dls = value; +} + +GC_API int GC_CALL GC_get_no_dls(void) +{ + return GC_no_dls; +} + +GC_API void GC_CALL GC_set_non_gc_bytes(GC_word value) +{ + GC_non_gc_bytes = value; +} + +GC_API GC_word GC_CALL GC_get_non_gc_bytes(void) +{ + return GC_non_gc_bytes; +} + +GC_API void GC_CALL GC_set_free_space_divisor(GC_word value) +{ + GC_ASSERT(value > 0); + GC_free_space_divisor = value; +} + +GC_API GC_word GC_CALL GC_get_free_space_divisor(void) +{ + return GC_free_space_divisor; +} + +GC_API void GC_CALL GC_set_max_retries(GC_word value) +{ + GC_ASSERT(value != ~(word)0); + GC_max_retries = value; +} + +GC_API GC_word GC_CALL GC_get_max_retries(void) +{ + return GC_max_retries; +} + +GC_API void GC_CALL GC_set_dont_precollect(int value) +{ + GC_ASSERT(value != -1); + /* value is of boolean type. */ + GC_dont_precollect = value; +} + +GC_API int GC_CALL GC_get_dont_precollect(void) +{ + return GC_dont_precollect; +} + +GC_API void GC_CALL GC_set_full_freq(int value) +{ + GC_ASSERT(value >= 0); + GC_full_freq = value; +} + +GC_API int GC_CALL GC_get_full_freq(void) +{ + return GC_full_freq; +} + +GC_API void GC_CALL GC_set_time_limit(unsigned long value) +{ + GC_ASSERT(value != (unsigned long)-1L); + GC_time_limit = value; +} + +GC_API unsigned long GC_CALL GC_get_time_limit(void) +{ + return GC_time_limit; +} + +GC_API void GC_CALL GC_set_force_unmap_on_gcollect(int value) +{ + GC_force_unmap_on_gcollect = (GC_bool)value; +} + +GC_API int GC_CALL GC_get_force_unmap_on_gcollect(void) +{ + return (int)GC_force_unmap_on_gcollect; +} diff --git a/missing b/missing new file mode 100755 index 0000000..f62bbae --- /dev/null +++ b/missing @@ -0,0 +1,215 @@ +#! /bin/sh +# Common wrapper for a few potentially missing GNU programs. + +scriptversion=2013-10-28.13; # UTC + +# Copyright (C) 1996-2014 Free Software Foundation, Inc. +# Originally written by Fran,cois Pinard , 1996. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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PROGRAM [ARGUMENT]... + +Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due +to PROGRAM being missing or too old. + +Options: + -h, --help display this help and exit + -v, --version output version information and exit + +Supported PROGRAM values: + aclocal autoconf autoheader autom4te automake makeinfo + bison yacc flex lex help2man + +Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and +'g' are ignored when checking the name. + +Send bug reports to ." + exit $? + ;; + + -v|--v|--ve|--ver|--vers|--versi|--versio|--version) + echo "missing $scriptversion (GNU Automake)" + exit $? + ;; + + -*) + echo 1>&2 "$0: unknown '$1' option" + echo 1>&2 "Try '$0 --help' for more information" + exit 1 + ;; + +esac + +# Run the given program, remember its exit status. +"$@"; st=$? + +# If it succeeded, we are done. +test $st -eq 0 && exit 0 + +# Also exit now if we it failed (or wasn't found), and '--version' was +# passed; such an option is passed most likely to detect whether the +# program is present and works. +case $2 in --version|--help) exit $st;; esac + +# Exit code 63 means version mismatch. This often happens when the user +# tries to use an ancient version of a tool on a file that requires a +# minimum version. +if test $st -eq 63; then + msg="probably too old" +elif test $st -eq 127; then + # Program was missing. + msg="missing on your system" +else + # Program was found and executed, but failed. Give up. + exit $st +fi + +perl_URL=http://www.perl.org/ +flex_URL=http://flex.sourceforge.net/ +gnu_software_URL=http://www.gnu.org/software + +program_details () +{ + case $1 in + aclocal|automake) + echo "The '$1' program is part of the GNU Automake package:" + echo "<$gnu_software_URL/automake>" + echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:" + echo "<$gnu_software_URL/autoconf>" + echo "<$gnu_software_URL/m4/>" + echo "<$perl_URL>" + ;; + autoconf|autom4te|autoheader) + echo "The '$1' program is part of the GNU Autoconf package:" + echo "<$gnu_software_URL/autoconf/>" + echo "It also requires GNU m4 and Perl in order to run:" + echo "<$gnu_software_URL/m4/>" + echo "<$perl_URL>" + ;; + esac +} + +give_advice () +{ + # Normalize program name to check for. + normalized_program=`echo "$1" | sed ' + s/^gnu-//; t + s/^gnu//; t + s/^g//; t'` + + printf '%s\n' "'$1' is $msg." + + configure_deps="'configure.ac' or m4 files included by 'configure.ac'" + case $normalized_program in + autoconf*) + echo "You should only need it if you modified 'configure.ac'," + echo "or m4 files included by it." + program_details 'autoconf' + ;; + autoheader*) + echo "You should only need it if you modified 'acconfig.h' or" + echo "$configure_deps." + program_details 'autoheader' + ;; + automake*) + echo "You should only need it if you modified 'Makefile.am' or" + echo "$configure_deps." + program_details 'automake' + ;; + aclocal*) + echo "You should only need it if you modified 'acinclude.m4' or" + echo "$configure_deps." + program_details 'aclocal' + ;; + autom4te*) + echo "You might have modified some maintainer files that require" + echo "the 'autom4te' program to be rebuilt." + program_details 'autom4te' + ;; + bison*|yacc*) + echo "You should only need it if you modified a '.y' file." + echo "You may want to install the GNU Bison package:" + echo "<$gnu_software_URL/bison/>" + ;; + lex*|flex*) + echo "You should only need it if you modified a '.l' file." + echo "You may want to install the Fast Lexical Analyzer package:" + echo "<$flex_URL>" + ;; + help2man*) + echo "You should only need it if you modified a dependency" \ + "of a man page." + echo "You may want to install the GNU Help2man package:" + echo "<$gnu_software_URL/help2man/>" + ;; + makeinfo*) + echo "You should only need it if you modified a '.texi' file, or" + echo "any other file indirectly affecting the aspect of the manual." + echo "You might want to install the Texinfo package:" + echo "<$gnu_software_URL/texinfo/>" + echo "The spurious makeinfo call might also be the consequence of" + echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might" + echo "want to install GNU make:" + echo "<$gnu_software_URL/make/>" + ;; + *) + echo "You might have modified some files without having the proper" + echo "tools for further handling them. Check the 'README' file, it" + echo "often tells you about the needed prerequisites for installing" + echo "this package. You may also peek at any GNU archive site, in" + echo "case some other package contains this missing '$1' program." + ;; + esac +} + +give_advice "$1" | sed -e '1s/^/WARNING: /' \ + -e '2,$s/^/ /' >&2 + +# Propagate the correct exit status (expected to be 127 for a program +# not found, 63 for a program that failed due to version mismatch). +exit $st + +# Local variables: +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "scriptversion=" +# time-stamp-format: "%:y-%02m-%02d.%02H" +# time-stamp-time-zone: "UTC" +# time-stamp-end: "; # UTC" +# End: diff --git a/new_hblk.c b/new_hblk.c new file mode 100644 index 0000000..108bdc0 --- /dev/null +++ b/new_hblk.c @@ -0,0 +1,191 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 2000 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +/* + * This file contains the functions: + * ptr_t GC_build_flXXX(h, old_fl) + * void GC_new_hblk(size) + */ + +#include + +#ifndef SMALL_CONFIG + /* Build a free list for size 2 (words) cleared objects inside */ + /* hblk h. Set the last link to be ofl. Return a pointer to the */ + /* first free list entry. */ + STATIC ptr_t GC_build_fl_clear2(struct hblk *h, ptr_t ofl) + { + word * p = (word *)(h -> hb_body); + word * lim = (word *)(h + 1); + + p[0] = (word)ofl; + p[1] = 0; + p[2] = (word)p; + p[3] = 0; + p += 4; + for (; (word)p < (word)lim; p += 4) { + p[0] = (word)(p-2); + p[1] = 0; + p[2] = (word)p; + p[3] = 0; + }; + return((ptr_t)(p-2)); + } + + /* The same for size 4 cleared objects. */ + STATIC ptr_t GC_build_fl_clear4(struct hblk *h, ptr_t ofl) + { + word * p = (word *)(h -> hb_body); + word * lim = (word *)(h + 1); + + p[0] = (word)ofl; + p[1] = 0; + p[2] = 0; + p[3] = 0; + p += 4; + for (; (word)p < (word)lim; p += 4) { + GC_PREFETCH_FOR_WRITE((ptr_t)(p + 64)); + p[0] = (word)(p-4); + p[1] = 0; + CLEAR_DOUBLE(p+2); + }; + return((ptr_t)(p-4)); + } + + /* The same for size 2 uncleared objects. */ + STATIC ptr_t GC_build_fl2(struct hblk *h, ptr_t ofl) + { + word * p = (word *)(h -> hb_body); + word * lim = (word *)(h + 1); + + p[0] = (word)ofl; + p[2] = (word)p; + p += 4; + for (; (word)p < (word)lim; p += 4) { + p[0] = (word)(p-2); + p[2] = (word)p; + }; + return((ptr_t)(p-2)); + } + + /* The same for size 4 uncleared objects. */ + STATIC ptr_t GC_build_fl4(struct hblk *h, ptr_t ofl) + { + word * p = (word *)(h -> hb_body); + word * lim = (word *)(h + 1); + + p[0] = (word)ofl; + p[4] = (word)p; + p += 8; + for (; (word)p < (word)lim; p += 8) { + GC_PREFETCH_FOR_WRITE((ptr_t)(p + 64)); + p[0] = (word)(p-4); + p[4] = (word)p; + }; + return((ptr_t)(p-4)); + } +#endif /* !SMALL_CONFIG */ + +/* Build a free list for objects of size sz inside heap block h. */ +/* Clear objects inside h if clear is set. Add list to the end of */ +/* the free list we build. Return the new free list. */ +/* This could be called without the main GC lock, if we ensure that */ +/* there is no concurrent collection which might reclaim objects that */ +/* we have not yet allocated. */ +GC_INNER ptr_t GC_build_fl(struct hblk *h, size_t sz, GC_bool clear, + ptr_t list) +{ + word *p, *prev; + word *last_object; /* points to last object in new hblk */ + + /* Do a few prefetches here, just because its cheap. */ + /* If we were more serious about it, these should go inside */ + /* the loops. But write prefetches usually don't seem to */ + /* matter much. */ + GC_PREFETCH_FOR_WRITE((ptr_t)h); + GC_PREFETCH_FOR_WRITE((ptr_t)h + 128); + GC_PREFETCH_FOR_WRITE((ptr_t)h + 256); + GC_PREFETCH_FOR_WRITE((ptr_t)h + 378); +# ifndef SMALL_CONFIG + /* Handle small objects sizes more efficiently. For larger objects */ + /* the difference is less significant. */ + switch (sz) { + case 2: if (clear) { + return GC_build_fl_clear2(h, list); + } else { + return GC_build_fl2(h, list); + } + case 4: if (clear) { + return GC_build_fl_clear4(h, list); + } else { + return GC_build_fl4(h, list); + } + default: + break; + } +# endif /* !SMALL_CONFIG */ + + /* Clear the page if necessary. */ + if (clear) BZERO(h, HBLKSIZE); + + /* Add objects to free list */ + p = (word *)(h -> hb_body) + sz; /* second object in *h */ + prev = (word *)(h -> hb_body); /* One object behind p */ + last_object = (word *)((char *)h + HBLKSIZE); + last_object -= sz; + /* Last place for last object to start */ + + /* make a list of all objects in *h with head as last object */ + while ((word)p <= (word)last_object) { + /* current object's link points to last object */ + obj_link(p) = (ptr_t)prev; + prev = p; + p += sz; + } + p -= sz; /* p now points to last object */ + + /* Put p (which is now head of list of objects in *h) as first */ + /* pointer in the appropriate free list for this size. */ + *(ptr_t *)h = list; + return ((ptr_t)p); +} + +/* Allocate a new heapblock for small objects of size gran granules. */ +/* Add all of the heapblock's objects to the free list for objects */ +/* of that size. Set all mark bits if objects are uncollectible. */ +/* Will fail to do anything if we are out of memory. */ +GC_INNER void GC_new_hblk(size_t gran, int kind) +{ + struct hblk *h; /* the new heap block */ + GC_bool clear = GC_obj_kinds[kind].ok_init; + + GC_STATIC_ASSERT((sizeof (struct hblk)) == HBLKSIZE); + + if (GC_debugging_started) clear = TRUE; + + /* Allocate a new heap block */ + h = GC_allochblk(GRANULES_TO_BYTES(gran), kind, 0); + if (h == 0) return; + + /* Mark all objects if appropriate. */ + if (IS_UNCOLLECTABLE(kind)) GC_set_hdr_marks(HDR(h)); + + /* Build the free list */ + GC_obj_kinds[kind].ok_freelist[gran] = + GC_build_fl(h, GRANULES_TO_WORDS(gran), clear, + GC_obj_kinds[kind].ok_freelist[gran]); +} diff --git a/obj_map.c b/obj_map.c new file mode 100644 index 0000000..9fdeb0a --- /dev/null +++ b/obj_map.c @@ -0,0 +1,90 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991, 1992 by Xerox Corporation. All rights reserved. + * Copyright (c) 1999-2001 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +/* Routines for maintaining maps describing heap block + * layouts for various object sizes. Allows fast pointer validity checks + * and fast location of object start locations on machines (such as SPARC) + * with slow division. + */ + +/* Consider pointers that are offset bytes displaced from the beginning */ +/* of an object to be valid. */ + +GC_API void GC_CALL GC_register_displacement(size_t offset) +{ + DCL_LOCK_STATE; + + LOCK(); + GC_register_displacement_inner(offset); + UNLOCK(); +} + +GC_INNER void GC_register_displacement_inner(size_t offset) +{ + if (offset >= VALID_OFFSET_SZ) { + ABORT("Bad argument to GC_register_displacement"); + } + if (!GC_valid_offsets[offset]) { + GC_valid_offsets[offset] = TRUE; + GC_modws_valid_offsets[offset % sizeof(word)] = TRUE; + } +} + +#ifdef MARK_BIT_PER_GRANULE + /* Add a heap block map for objects of size granules to obj_map. */ + /* Return FALSE on failure. */ + /* A size of 0 granules is used for large objects. */ + GC_INNER GC_bool GC_add_map_entry(size_t granules) + { + unsigned displ; + unsigned short * new_map; + + if (granules > BYTES_TO_GRANULES(MAXOBJBYTES)) granules = 0; + if (GC_obj_map[granules] != 0) { + return(TRUE); + } + new_map = (unsigned short *)GC_scratch_alloc(MAP_LEN * sizeof(short)); + if (new_map == 0) return(FALSE); + GC_COND_LOG_PRINTF( + "Adding block map for size of %u granules (%u bytes)\n", + (unsigned)granules, (unsigned)GRANULES_TO_BYTES(granules)); + if (granules == 0) { + for (displ = 0; displ < BYTES_TO_GRANULES(HBLKSIZE); displ++) { + new_map[displ] = 1; /* Nonzero to get us out of marker fast path. */ + } + } else { + for (displ = 0; displ < BYTES_TO_GRANULES(HBLKSIZE); displ++) { + new_map[displ] = (unsigned short)(displ % granules); + } + } + GC_obj_map[granules] = new_map; + return(TRUE); + } +#endif /* MARK_BIT_PER_GRANULE */ + +GC_INNER void GC_initialize_offsets(void) +{ + unsigned i; + if (GC_all_interior_pointers) { + for (i = 0; i < VALID_OFFSET_SZ; ++i) + GC_valid_offsets[i] = TRUE; + } else { + BZERO(GC_valid_offsets, sizeof(GC_valid_offsets)); + for (i = 0; i < sizeof(word); ++i) + GC_modws_valid_offsets[i] = FALSE; + } +} diff --git a/os_dep.c b/os_dep.c new file mode 100644 index 0000000..d3429d0 --- /dev/null +++ b/os_dep.c @@ -0,0 +1,4741 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved. + * Copyright (c) 1999 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +#if !defined(OS2) && !defined(PCR) && !defined(AMIGA) && !defined(MACOS) \ + && !defined(MSWINCE) && !defined(__CC_ARM) +# include +# if !defined(MSWIN32) +# include +# endif +#endif + +#include +#if defined(MSWINCE) || defined(SN_TARGET_PS3) +# define SIGSEGV 0 /* value is irrelevant */ +#else +# include +#endif + +#if defined(UNIX_LIKE) || defined(CYGWIN32) || defined(NACL) \ + || defined(SYMBIAN) +# include +#endif + +#if defined(LINUX) || defined(LINUX_STACKBOTTOM) +# include +#endif + +/* Blatantly OS dependent routines, except for those that are related */ +/* to dynamic loading. */ + +#ifdef AMIGA +# define GC_AMIGA_DEF +# include "extra/AmigaOS.c" +# undef GC_AMIGA_DEF +#endif + +#if defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32) +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN 1 +# endif +# define NOSERVICE +# include + /* It's not clear this is completely kosher under Cygwin. But it */ + /* allows us to get a working GC_get_stack_base. */ +#endif + +#ifdef MACOS +# include +#endif + +#ifdef IRIX5 +# include +# include /* for locking */ +#endif + +#if defined(MMAP_SUPPORTED) || defined(ADD_HEAP_GUARD_PAGES) +# if defined(USE_MUNMAP) && !defined(USE_MMAP) && !defined(CPPCHECK) +# error "invalid config - USE_MUNMAP requires USE_MMAP" +# endif +# include +# include +# include +# include +#endif + +#ifdef DARWIN + /* for get_etext and friends */ +# include +#endif + +#ifdef DJGPP + /* Apparently necessary for djgpp 2.01. May cause problems with */ + /* other versions. */ + typedef long unsigned int caddr_t; +#endif + +#ifdef PCR +# include "il/PCR_IL.h" +# include "th/PCR_ThCtl.h" +# include "mm/PCR_MM.h" +#endif + +#if !defined(NO_EXECUTE_PERMISSION) + STATIC GC_bool GC_pages_executable = TRUE; +#else + STATIC GC_bool GC_pages_executable = FALSE; +#endif +#define IGNORE_PAGES_EXECUTABLE 1 + /* Undefined on GC_pages_executable real use. */ + +#ifdef NEED_PROC_MAPS +/* We need to parse /proc/self/maps, either to find dynamic libraries, */ +/* and/or to find the register backing store base (IA64). Do it once */ +/* here. */ + +#define READ read + +/* Repeatedly perform a read call until the buffer is filled or */ +/* we encounter EOF. */ +STATIC ssize_t GC_repeat_read(int fd, char *buf, size_t count) +{ + size_t num_read = 0; + + ASSERT_CANCEL_DISABLED(); + while (num_read < count) { + ssize_t result = READ(fd, buf + num_read, count - num_read); + + if (result < 0) return result; + if (result == 0) break; + num_read += result; + } + return num_read; +} + +#ifdef THREADS + /* Determine the length of a file by incrementally reading it into a */ + /* buffer. This would be silly to use it on a file supporting lseek, */ + /* but Linux /proc files usually do not. */ + STATIC size_t GC_get_file_len(int f) + { + size_t total = 0; + ssize_t result; +# define GET_FILE_LEN_BUF_SZ 500 + char buf[GET_FILE_LEN_BUF_SZ]; + + do { + result = read(f, buf, GET_FILE_LEN_BUF_SZ); + if (result == -1) return 0; + total += result; + } while (result > 0); + return total; + } + + STATIC size_t GC_get_maps_len(void) + { + int f = open("/proc/self/maps", O_RDONLY); + size_t result; + if (f < 0) return 0; /* treat missing file as empty */ + result = GC_get_file_len(f); + close(f); + return result; + } +#endif /* THREADS */ + +/* Copy the contents of /proc/self/maps to a buffer in our address */ +/* space. Return the address of the buffer, or zero on failure. */ +/* This code could be simplified if we could determine its size ahead */ +/* of time. */ +GC_INNER char * GC_get_maps(void) +{ + ssize_t result; + static char *maps_buf = NULL; + static size_t maps_buf_sz = 1; + size_t maps_size, old_maps_size = 0; + + /* The buffer is essentially static, so there must be a single client. */ + GC_ASSERT(I_HOLD_LOCK()); + + /* Note that in the presence of threads, the maps file can */ + /* essentially shrink asynchronously and unexpectedly as */ + /* threads that we already think of as dead release their */ + /* stacks. And there is no easy way to read the entire */ + /* file atomically. This is arguably a misfeature of the */ + /* /proc/.../maps interface. */ + /* Since we expect the file can grow asynchronously in rare */ + /* cases, it should suffice to first determine */ + /* the size (using lseek or read), and then to reread the */ + /* file. If the size is inconsistent we have to retry. */ + /* This only matters with threads enabled, and if we use */ + /* this to locate roots (not the default). */ + +# ifdef THREADS + /* Determine the initial size of /proc/self/maps. */ + /* Note that lseek doesn't work, at least as of 2.6.15. */ + maps_size = GC_get_maps_len(); + if (0 == maps_size) return 0; +# else + maps_size = 4000; /* Guess */ +# endif + + /* Read /proc/self/maps, growing maps_buf as necessary. */ + /* Note that we may not allocate conventionally, and */ + /* thus can't use stdio. */ + do { + int f; + + while (maps_size >= maps_buf_sz) { + GC_scratch_recycle_no_gww(maps_buf, maps_buf_sz); + /* Grow only by powers of 2, since we leak "too small" buffers.*/ + while (maps_size >= maps_buf_sz) maps_buf_sz *= 2; + maps_buf = GC_scratch_alloc(maps_buf_sz); +# ifdef THREADS + /* Recompute initial length, since we allocated. */ + /* This can only happen a few times per program */ + /* execution. */ + maps_size = GC_get_maps_len(); + if (0 == maps_size) return 0; +# endif + if (maps_buf == 0) return 0; + } + GC_ASSERT(maps_buf_sz >= maps_size + 1); + f = open("/proc/self/maps", O_RDONLY); + if (-1 == f) return 0; +# ifdef THREADS + old_maps_size = maps_size; +# endif + maps_size = 0; + do { + result = GC_repeat_read(f, maps_buf, maps_buf_sz-1); + if (result <= 0) + break; + maps_size += result; + } while ((size_t)result == maps_buf_sz-1); + close(f); + if (result <= 0) + return 0; +# ifdef THREADS + if (maps_size > old_maps_size) { + /* This might be caused by e.g. thread creation. */ + WARN("Unexpected asynchronous /proc/self/maps growth" + " (to %" WARN_PRIdPTR " bytes)\n", maps_size); + } +# endif + } while (maps_size >= maps_buf_sz || maps_size < old_maps_size); + /* In the single-threaded case, the second clause is false. */ + maps_buf[maps_size] = '\0'; + + /* Apply fn to result. */ + return maps_buf; +} + +/* + * GC_parse_map_entry parses an entry from /proc/self/maps so we can + * locate all writable data segments that belong to shared libraries. + * The format of one of these entries and the fields we care about + * is as follows: + * XXXXXXXX-XXXXXXXX r-xp 00000000 30:05 260537 name of mapping...\n + * ^^^^^^^^ ^^^^^^^^ ^^^^ ^^ + * start end prot maj_dev + * + * Note that since about august 2003 kernels, the columns no longer have + * fixed offsets on 64-bit kernels. Hence we no longer rely on fixed offsets + * anywhere, which is safer anyway. + */ + +/* Assign various fields of the first line in buf_ptr to (*start), */ +/* (*end), (*prot), (*maj_dev) and (*mapping_name). mapping_name may */ +/* be NULL. (*prot) and (*mapping_name) are assigned pointers into the */ +/* original buffer. */ +#if (defined(DYNAMIC_LOADING) && defined(USE_PROC_FOR_LIBRARIES)) \ + || defined(IA64) || defined(INCLUDE_LINUX_THREAD_DESCR) \ + || defined(REDIRECT_MALLOC) + GC_INNER char *GC_parse_map_entry(char *buf_ptr, ptr_t *start, ptr_t *end, + char **prot, unsigned int *maj_dev, + char **mapping_name) + { + unsigned char *start_start, *end_start, *maj_dev_start; + unsigned char *p; /* unsigned for isspace, isxdigit */ + + if (buf_ptr == NULL || *buf_ptr == '\0') { + return NULL; + } + + p = (unsigned char *)buf_ptr; + while (isspace(*p)) ++p; + start_start = p; + GC_ASSERT(isxdigit(*start_start)); + *start = (ptr_t)strtoul((char *)start_start, (char **)&p, 16); + GC_ASSERT(*p=='-'); + + ++p; + end_start = p; + GC_ASSERT(isxdigit(*end_start)); + *end = (ptr_t)strtoul((char *)end_start, (char **)&p, 16); + GC_ASSERT(isspace(*p)); + + while (isspace(*p)) ++p; + GC_ASSERT(*p == 'r' || *p == '-'); + *prot = (char *)p; + /* Skip past protection field to offset field */ + while (!isspace(*p)) ++p; while (isspace(*p)) ++p; + GC_ASSERT(isxdigit(*p)); + /* Skip past offset field, which we ignore */ + while (!isspace(*p)) ++p; while (isspace(*p)) ++p; + maj_dev_start = p; + GC_ASSERT(isxdigit(*maj_dev_start)); + *maj_dev = strtoul((char *)maj_dev_start, NULL, 16); + + if (mapping_name == 0) { + while (*p && *p++ != '\n'); + } else { + while (*p && *p != '\n' && *p != '/' && *p != '[') p++; + *mapping_name = (char *)p; + while (*p && *p++ != '\n'); + } + return (char *)p; + } +#endif /* REDIRECT_MALLOC || DYNAMIC_LOADING || IA64 || ... */ + +#if defined(IA64) || defined(INCLUDE_LINUX_THREAD_DESCR) + /* Try to read the backing store base from /proc/self/maps. */ + /* Return the bounds of the writable mapping with a 0 major device, */ + /* which includes the address passed as data. */ + /* Return FALSE if there is no such mapping. */ + GC_INNER GC_bool GC_enclosing_mapping(ptr_t addr, ptr_t *startp, + ptr_t *endp) + { + char *prot; + ptr_t my_start, my_end; + unsigned int maj_dev; + char *maps = GC_get_maps(); + char *buf_ptr = maps; + + if (0 == maps) return(FALSE); + for (;;) { + buf_ptr = GC_parse_map_entry(buf_ptr, &my_start, &my_end, + &prot, &maj_dev, 0); + + if (buf_ptr == NULL) return FALSE; + if (prot[1] == 'w' && maj_dev == 0) { + if ((word)my_end > (word)addr && (word)my_start <= (word)addr) { + *startp = my_start; + *endp = my_end; + return TRUE; + } + } + } + return FALSE; + } +#endif /* IA64 || INCLUDE_LINUX_THREAD_DESCR */ + +#if defined(REDIRECT_MALLOC) + /* Find the text(code) mapping for the library whose name, after */ + /* stripping the directory part, starts with nm. */ + GC_INNER GC_bool GC_text_mapping(char *nm, ptr_t *startp, ptr_t *endp) + { + size_t nm_len = strlen(nm); + char *prot; + char *map_path; + ptr_t my_start, my_end; + unsigned int maj_dev; + char *maps = GC_get_maps(); + char *buf_ptr = maps; + + if (0 == maps) return(FALSE); + for (;;) { + buf_ptr = GC_parse_map_entry(buf_ptr, &my_start, &my_end, + &prot, &maj_dev, &map_path); + + if (buf_ptr == NULL) return FALSE; + if (prot[0] == 'r' && prot[1] == '-' && prot[2] == 'x') { + char *p = map_path; + /* Set p to point just past last slash, if any. */ + while (*p != '\0' && *p != '\n' && *p != ' ' && *p != '\t') ++p; + while (*p != '/' && (word)p >= (word)map_path) --p; + ++p; + if (strncmp(nm, p, nm_len) == 0) { + *startp = my_start; + *endp = my_end; + return TRUE; + } + } + } + return FALSE; + } +#endif /* REDIRECT_MALLOC */ + +#ifdef IA64 + static ptr_t backing_store_base_from_proc(void) + { + ptr_t my_start, my_end; + if (!GC_enclosing_mapping(GC_save_regs_in_stack(), &my_start, &my_end)) { + GC_COND_LOG_PRINTF("Failed to find backing store base from /proc\n"); + return 0; + } + return my_start; + } +#endif + +#endif /* NEED_PROC_MAPS */ + +#if defined(SEARCH_FOR_DATA_START) + /* The I386 case can be handled without a search. The Alpha case */ + /* used to be handled differently as well, but the rules changed */ + /* for recent Linux versions. This seems to be the easiest way to */ + /* cover all versions. */ + +# if defined(LINUX) || defined(HURD) + /* Some Linux distributions arrange to define __data_start. Some */ + /* define data_start as a weak symbol. The latter is technically */ + /* broken, since the user program may define data_start, in which */ + /* case we lose. Nonetheless, we try both, preferring __data_start.*/ + /* We assume gcc-compatible pragmas. */ +# pragma weak __data_start +# pragma weak data_start + extern int __data_start[], data_start[]; +# ifdef PLATFORM_ANDROID +# pragma weak _etext +# pragma weak __dso_handle + extern int _etext[], __dso_handle[]; +# endif +# endif /* LINUX */ + + ptr_t GC_data_start = NULL; + + ptr_t GC_find_limit(ptr_t, GC_bool); + + GC_INNER void GC_init_linux_data_start(void) + { + ptr_t data_end = DATAEND; + +# if (defined(LINUX) || defined(HURD)) && !defined(IGNORE_PROG_DATA_START) + /* Try the easy approaches first: */ +# ifdef PLATFORM_ANDROID + /* Workaround for "gold" (default) linker (as of Android NDK r10e). */ + if ((word)__data_start < (word)_etext + && (word)_etext < (word)__dso_handle) { + GC_data_start = (ptr_t)(__dso_handle); +# ifdef DEBUG_ADD_DEL_ROOTS + GC_log_printf( + "__data_start is wrong; using __dso_handle as data start\n"); +# endif + } else +# endif + /* else */ if (COVERT_DATAFLOW(__data_start) != 0) { + GC_data_start = (ptr_t)(__data_start); + } else { + GC_data_start = (ptr_t)(data_start); + } + if (COVERT_DATAFLOW(GC_data_start) != 0) { + if ((word)GC_data_start > (word)data_end) + ABORT_ARG2("Wrong __data_start/_end pair", + ": %p .. %p", (void *)GC_data_start, (void *)data_end); + return; + } +# ifdef DEBUG_ADD_DEL_ROOTS + GC_log_printf("__data_start not provided\n"); +# endif +# endif /* LINUX */ + + if (GC_no_dls) { + /* Not needed, avoids the SIGSEGV caused by */ + /* GC_find_limit which complicates debugging. */ + GC_data_start = data_end; /* set data root size to 0 */ + return; + } + + GC_data_start = GC_find_limit(data_end, FALSE); + } +#endif /* SEARCH_FOR_DATA_START */ + +#ifdef ECOS + +# ifndef ECOS_GC_MEMORY_SIZE +# define ECOS_GC_MEMORY_SIZE (448 * 1024) +# endif /* ECOS_GC_MEMORY_SIZE */ + + /* FIXME: This is a simple way of allocating memory which is */ + /* compatible with ECOS early releases. Later releases use a more */ + /* sophisticated means of allocating memory than this simple static */ + /* allocator, but this method is at least bound to work. */ + static char ecos_gc_memory[ECOS_GC_MEMORY_SIZE]; + static char *ecos_gc_brk = ecos_gc_memory; + + static void *tiny_sbrk(ptrdiff_t increment) + { + void *p = ecos_gc_brk; + ecos_gc_brk += increment; + if ((word)ecos_gc_brk > (word)(ecos_gc_memory + sizeof(ecos_gc_memory))) { + ecos_gc_brk -= increment; + return NULL; + } + return p; + } +# define sbrk tiny_sbrk +#endif /* ECOS */ + +#if defined(NETBSD) && defined(__ELF__) + ptr_t GC_data_start = NULL; + ptr_t GC_find_limit(ptr_t, GC_bool); + + extern char **environ; + + GC_INNER void GC_init_netbsd_elf(void) + { + /* This may need to be environ, without the underscore, for */ + /* some versions. */ + GC_data_start = GC_find_limit((ptr_t)&environ, FALSE); + } +#endif /* NETBSD */ + +#if defined(ADDRESS_SANITIZER) && (defined(UNIX_LIKE) \ + || defined(NEED_FIND_LIMIT) || defined(MPROTECT_VDB)) \ + && !defined(CUSTOM_ASAN_DEF_OPTIONS) + /* To tell ASan to allow GC to use its own SIGBUS/SEGV handlers. */ + /* The function is exported just to be visible to ASan library. */ + GC_API const char *__asan_default_options(void) + { + return "allow_user_segv_handler=1"; + } +#endif + +#ifdef OPENBSD + static struct sigaction old_segv_act; + STATIC sigjmp_buf GC_jmp_buf_openbsd; + +# ifdef THREADS +# include + extern sigset_t __syscall(quad_t, ...); +# endif + + /* Don't use GC_find_limit() because siglongjmp() outside of the */ + /* signal handler by-passes our userland pthreads lib, leaving */ + /* SIGSEGV and SIGPROF masked. Instead, use this custom one that */ + /* works-around the issues. */ + + STATIC void GC_fault_handler_openbsd(int sig GC_ATTR_UNUSED) + { + siglongjmp(GC_jmp_buf_openbsd, 1); + } + + /* Return the first non-addressable location > p or bound. */ + /* Requires the allocation lock. */ + STATIC ptr_t GC_find_limit_openbsd(ptr_t p, ptr_t bound) + { + static volatile ptr_t result; + /* Safer if static, since otherwise it may not be */ + /* preserved across the longjmp. Can safely be */ + /* static since it's only called with the */ + /* allocation lock held. */ + + struct sigaction act; + word pgsz = (word)sysconf(_SC_PAGESIZE); + + GC_ASSERT((word)bound >= pgsz); + GC_ASSERT(I_HOLD_LOCK()); + + act.sa_handler = GC_fault_handler_openbsd; + sigemptyset(&act.sa_mask); + act.sa_flags = SA_NODEFER | SA_RESTART; + /* act.sa_restorer is deprecated and should not be initialized. */ + sigaction(SIGSEGV, &act, &old_segv_act); + + if (sigsetjmp(GC_jmp_buf_openbsd, 1) == 0) { + result = (ptr_t)((word)p & ~(pgsz-1)); + for (;;) { + if ((word)result >= (word)bound - pgsz) { + result = bound; + break; + } + result += pgsz; /* no overflow expected */ + GC_noop1((word)(*result)); + } + } + +# ifdef THREADS + /* Due to the siglongjump we need to manually unmask SIGPROF. */ + __syscall(SYS_sigprocmask, SIG_UNBLOCK, sigmask(SIGPROF)); +# endif + + sigaction(SIGSEGV, &old_segv_act, 0); + return(result); + } + + /* Return first addressable location > p or bound. */ + /* Requires the allocation lock. */ + STATIC ptr_t GC_skip_hole_openbsd(ptr_t p, ptr_t bound) + { + static volatile ptr_t result; + static volatile int firstpass; + + struct sigaction act; + word pgsz = (word)sysconf(_SC_PAGESIZE); + + GC_ASSERT((word)bound >= pgsz); + GC_ASSERT(I_HOLD_LOCK()); + + act.sa_handler = GC_fault_handler_openbsd; + sigemptyset(&act.sa_mask); + act.sa_flags = SA_NODEFER | SA_RESTART; + /* act.sa_restorer is deprecated and should not be initialized. */ + sigaction(SIGSEGV, &act, &old_segv_act); + + firstpass = 1; + result = (ptr_t)((word)p & ~(pgsz-1)); + if (sigsetjmp(GC_jmp_buf_openbsd, 1) != 0 || firstpass) { + firstpass = 0; + if ((word)result >= (word)bound - pgsz) { + result = bound; + } else { + result += pgsz; /* no overflow expected */ + GC_noop1((word)(*result)); + } + } + + sigaction(SIGSEGV, &old_segv_act, 0); + return(result); + } +#endif /* OPENBSD */ + +# ifdef OS2 + +# include + +# if !defined(__IBMC__) && !defined(__WATCOMC__) /* e.g. EMX */ + +struct exe_hdr { + unsigned short magic_number; + unsigned short padding[29]; + long new_exe_offset; +}; + +#define E_MAGIC(x) (x).magic_number +#define EMAGIC 0x5A4D +#define E_LFANEW(x) (x).new_exe_offset + +struct e32_exe { + unsigned char magic_number[2]; + unsigned char byte_order; + unsigned char word_order; + unsigned long exe_format_level; + unsigned short cpu; + unsigned short os; + unsigned long padding1[13]; + unsigned long object_table_offset; + unsigned long object_count; + unsigned long padding2[31]; +}; + +#define E32_MAGIC1(x) (x).magic_number[0] +#define E32MAGIC1 'L' +#define E32_MAGIC2(x) (x).magic_number[1] +#define E32MAGIC2 'X' +#define E32_BORDER(x) (x).byte_order +#define E32LEBO 0 +#define E32_WORDER(x) (x).word_order +#define E32LEWO 0 +#define E32_CPU(x) (x).cpu +#define E32CPU286 1 +#define E32_OBJTAB(x) (x).object_table_offset +#define E32_OBJCNT(x) (x).object_count + +struct o32_obj { + unsigned long size; + unsigned long base; + unsigned long flags; + unsigned long pagemap; + unsigned long mapsize; + unsigned long reserved; +}; + +#define O32_FLAGS(x) (x).flags +#define OBJREAD 0x0001L +#define OBJWRITE 0x0002L +#define OBJINVALID 0x0080L +#define O32_SIZE(x) (x).size +#define O32_BASE(x) (x).base + +# else /* IBM's compiler */ + +/* A kludge to get around what appears to be a header file bug */ +# ifndef WORD +# define WORD unsigned short +# endif +# ifndef DWORD +# define DWORD unsigned long +# endif + +# define EXE386 1 +# include +# include + +# endif /* __IBMC__ */ + +# define INCL_DOSEXCEPTIONS +# define INCL_DOSPROCESS +# define INCL_DOSERRORS +# define INCL_DOSMODULEMGR +# define INCL_DOSMEMMGR +# include + +# endif /* OS/2 */ + +/* Find the page size */ +GC_INNER size_t GC_page_size = 0; + +#if defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32) +# ifndef VER_PLATFORM_WIN32_CE +# define VER_PLATFORM_WIN32_CE 3 +# endif + +# if defined(MSWINCE) && defined(THREADS) + GC_INNER GC_bool GC_dont_query_stack_min = FALSE; +# endif + + GC_INNER SYSTEM_INFO GC_sysinfo; + + GC_INNER void GC_setpagesize(void) + { + GetSystemInfo(&GC_sysinfo); +# if defined(CYGWIN32) && defined(USE_MUNMAP) + /* Allocations made with mmap() are aligned to the allocation */ + /* granularity, which (at least on 64-bit Windows OS) is not the */ + /* same as the page size. Probably a separate variable could */ + /* be added to distinguish the allocation granularity from the */ + /* actual page size, but in practice there is no good reason to */ + /* make allocations smaller than dwAllocationGranularity, so we */ + /* just use it instead of the actual page size here (as Cygwin */ + /* itself does in many cases). */ + GC_page_size = (size_t)GC_sysinfo.dwAllocationGranularity; + GC_ASSERT(GC_page_size >= (size_t)GC_sysinfo.dwPageSize); +# else + GC_page_size = (size_t)GC_sysinfo.dwPageSize; +# endif +# if defined(MSWINCE) && !defined(_WIN32_WCE_EMULATION) + { + OSVERSIONINFO verInfo; + /* Check the current WinCE version. */ + verInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); + if (!GetVersionEx(&verInfo)) + ABORT("GetVersionEx failed"); + if (verInfo.dwPlatformId == VER_PLATFORM_WIN32_CE && + verInfo.dwMajorVersion < 6) { + /* Only the first 32 MB of address space belongs to the */ + /* current process (unless WinCE 6.0+ or emulation). */ + GC_sysinfo.lpMaximumApplicationAddress = (LPVOID)((word)32 << 20); +# ifdef THREADS + /* On some old WinCE versions, it's observed that */ + /* VirtualQuery calls don't work properly when used to */ + /* get thread current stack committed minimum. */ + if (verInfo.dwMajorVersion < 5) + GC_dont_query_stack_min = TRUE; +# endif + } + } +# endif + } + +# ifndef CYGWIN32 +# define is_writable(prot) ((prot) == PAGE_READWRITE \ + || (prot) == PAGE_WRITECOPY \ + || (prot) == PAGE_EXECUTE_READWRITE \ + || (prot) == PAGE_EXECUTE_WRITECOPY) + /* Return the number of bytes that are writable starting at p. */ + /* The pointer p is assumed to be page aligned. */ + /* If base is not 0, *base becomes the beginning of the */ + /* allocation region containing p. */ + STATIC word GC_get_writable_length(ptr_t p, ptr_t *base) + { + MEMORY_BASIC_INFORMATION buf; + word result; + word protect; + + result = VirtualQuery(p, &buf, sizeof(buf)); + if (result != sizeof(buf)) ABORT("Weird VirtualQuery result"); + if (base != 0) *base = (ptr_t)(buf.AllocationBase); + protect = (buf.Protect & ~(PAGE_GUARD | PAGE_NOCACHE)); + if (!is_writable(protect)) { + return(0); + } + if (buf.State != MEM_COMMIT) return(0); + return(buf.RegionSize); + } + + GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *sb) + { + ptr_t trunc_sp; + word size; + + /* Set page size if it is not ready (so client can use this */ + /* function even before GC is initialized). */ + if (!GC_page_size) GC_setpagesize(); + + trunc_sp = (ptr_t)((word)GC_approx_sp() & ~(GC_page_size - 1)); + /* FIXME: This won't work if called from a deeply recursive */ + /* client code (and the committed stack space has grown). */ + size = GC_get_writable_length(trunc_sp, 0); + GC_ASSERT(size != 0); + sb -> mem_base = trunc_sp + size; + return GC_SUCCESS; + } +# else /* CYGWIN32 */ + /* An alternate version for Cygwin (adapted from Dave Korn's */ + /* gcc version of boehm-gc). */ + GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *sb) + { +# ifdef X86_64 + sb -> mem_base = ((NT_TIB*)NtCurrentTeb())->StackBase; +# else + void * _tlsbase; + + __asm__ ("movl %%fs:4, %0" + : "=r" (_tlsbase)); + sb -> mem_base = _tlsbase; +# endif + return GC_SUCCESS; + } +# endif /* CYGWIN32 */ +# define HAVE_GET_STACK_BASE + +#else /* !MSWIN32 */ + GC_INNER void GC_setpagesize(void) + { +# if defined(MPROTECT_VDB) || defined(PROC_VDB) || defined(USE_MMAP) + GC_page_size = (size_t)GETPAGESIZE(); +# if !defined(CPPCHECK) + if (0 == GC_page_size) + ABORT("getpagesize failed"); +# endif +# else + /* It's acceptable to fake it. */ + GC_page_size = HBLKSIZE; +# endif + } +#endif /* !MSWIN32 */ + +#ifdef BEOS +# include + + GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *sb) + { + thread_info th; + get_thread_info(find_thread(NULL),&th); + sb->mem_base = th.stack_end; + return GC_SUCCESS; + } +# define HAVE_GET_STACK_BASE +#endif /* BEOS */ + +#ifdef OS2 + GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *sb) + { + PTIB ptib; /* thread information block */ + PPIB ppib; + if (DosGetInfoBlocks(&ptib, &ppib) != NO_ERROR) { + WARN("DosGetInfoBlocks failed\n", 0); + return GC_UNIMPLEMENTED; + } + sb->mem_base = ptib->tib_pstacklimit; + return GC_SUCCESS; + } +# define HAVE_GET_STACK_BASE +#endif /* OS2 */ + +# ifdef AMIGA +# define GC_AMIGA_SB +# include "extra/AmigaOS.c" +# undef GC_AMIGA_SB +# define GET_MAIN_STACKBASE_SPECIAL +# endif /* AMIGA */ + +# if defined(NEED_FIND_LIMIT) || defined(UNIX_LIKE) + + typedef void (*GC_fault_handler_t)(int); + +# if defined(SUNOS5SIGS) || defined(IRIX5) || defined(OSF1) \ + || defined(HURD) || defined(FREEBSD) || defined(NETBSD) + static struct sigaction old_segv_act; +# if defined(_sigargs) /* !Irix6.x */ \ + || defined(HURD) || defined(NETBSD) || defined(FREEBSD) + static struct sigaction old_bus_act; +# endif +# else + static GC_fault_handler_t old_segv_handler; +# ifdef HAVE_SIGBUS + static GC_fault_handler_t old_bus_handler; +# endif +# endif + + GC_INNER void GC_set_and_save_fault_handler(GC_fault_handler_t h) + { +# if defined(SUNOS5SIGS) || defined(IRIX5) || defined(OSF1) \ + || defined(HURD) || defined(FREEBSD) || defined(NETBSD) + struct sigaction act; + + act.sa_handler = h; +# ifdef SIGACTION_FLAGS_NODEFER_HACK + /* Was necessary for Solaris 2.3 and very temporary */ + /* NetBSD bugs. */ + act.sa_flags = SA_RESTART | SA_NODEFER; +# else + act.sa_flags = SA_RESTART; +# endif + + (void) sigemptyset(&act.sa_mask); + /* act.sa_restorer is deprecated and should not be initialized. */ +# ifdef GC_IRIX_THREADS + /* Older versions have a bug related to retrieving and */ + /* and setting a handler at the same time. */ + (void) sigaction(SIGSEGV, 0, &old_segv_act); + (void) sigaction(SIGSEGV, &act, 0); +# else + (void) sigaction(SIGSEGV, &act, &old_segv_act); +# if defined(IRIX5) && defined(_sigargs) /* Irix 5.x, not 6.x */ \ + || defined(HURD) || defined(NETBSD) || defined(FREEBSD) + /* Under Irix 5.x or HP/UX, we may get SIGBUS. */ + /* Pthreads doesn't exist under Irix 5.x, so we */ + /* don't have to worry in the threads case. */ + (void) sigaction(SIGBUS, &act, &old_bus_act); +# endif +# endif /* !GC_IRIX_THREADS */ +# else + old_segv_handler = signal(SIGSEGV, h); +# ifdef HAVE_SIGBUS + old_bus_handler = signal(SIGBUS, h); +# endif +# endif +# if defined(CPPCHECK) && defined(ADDRESS_SANITIZER) + GC_noop1((word)&__asan_default_options); +# endif + } +# endif /* NEED_FIND_LIMIT || UNIX_LIKE */ + +# if defined(NEED_FIND_LIMIT) \ + || (defined(USE_PROC_FOR_LIBRARIES) && defined(THREADS)) + /* Some tools to implement HEURISTIC2 */ +# define MIN_PAGE_SIZE 256 /* Smallest conceivable page size, bytes */ + + GC_INNER JMP_BUF GC_jmp_buf; + + STATIC void GC_fault_handler(int sig GC_ATTR_UNUSED) + { + LONGJMP(GC_jmp_buf, 1); + } + + GC_INNER void GC_setup_temporary_fault_handler(void) + { + /* Handler is process-wide, so this should only happen in */ + /* one thread at a time. */ + GC_ASSERT(I_HOLD_LOCK()); + GC_set_and_save_fault_handler(GC_fault_handler); + } + + GC_INNER void GC_reset_fault_handler(void) + { +# if defined(SUNOS5SIGS) || defined(IRIX5) || defined(OSF1) \ + || defined(HURD) || defined(FREEBSD) || defined(NETBSD) + (void) sigaction(SIGSEGV, &old_segv_act, 0); +# if defined(IRIX5) && defined(_sigargs) /* Irix 5.x, not 6.x */ \ + || defined(HURD) || defined(NETBSD) + (void) sigaction(SIGBUS, &old_bus_act, 0); +# endif +# else + (void) signal(SIGSEGV, old_segv_handler); +# ifdef HAVE_SIGBUS + (void) signal(SIGBUS, old_bus_handler); +# endif +# endif + } + + /* Return the first non-addressable location > p (up) or */ + /* the smallest location q s.t. [q,p) is addressable (!up). */ + /* We assume that p (up) or p-1 (!up) is addressable. */ + /* Requires allocation lock. */ + STATIC ptr_t GC_find_limit_with_bound(ptr_t p, GC_bool up, ptr_t bound) + { + static volatile ptr_t result; + /* Safer if static, since otherwise it may not be */ + /* preserved across the longjmp. Can safely be */ + /* static since it's only called with the */ + /* allocation lock held. */ + + GC_ASSERT(up ? (word)bound >= MIN_PAGE_SIZE + : (word)bound <= ~(word)MIN_PAGE_SIZE); + GC_ASSERT(I_HOLD_LOCK()); + GC_setup_temporary_fault_handler(); + if (SETJMP(GC_jmp_buf) == 0) { + result = (ptr_t)(((word)(p)) + & ~(MIN_PAGE_SIZE-1)); + for (;;) { + if (up) { + if ((word)result >= (word)bound - MIN_PAGE_SIZE) { + result = bound; + break; + } + result += MIN_PAGE_SIZE; /* no overflow expected */ + } else { + if ((word)result <= (word)bound + MIN_PAGE_SIZE) { + result = bound - MIN_PAGE_SIZE; + /* This is to compensate */ + /* further result increment (we */ + /* do not modify "up" variable */ + /* since it might be clobbered */ + /* by setjmp otherwise). */ + break; + } + result -= MIN_PAGE_SIZE; /* no underflow expected */ + } + GC_noop1((word)(*result)); + } + } + GC_reset_fault_handler(); + if (!up) { + result += MIN_PAGE_SIZE; + } + return(result); + } + + ptr_t GC_find_limit(ptr_t p, GC_bool up) + { + return GC_find_limit_with_bound(p, up, up ? (ptr_t)(word)(-1) : 0); + } +# endif /* NEED_FIND_LIMIT || USE_PROC_FOR_LIBRARIES */ + +#ifdef HPUX_STACKBOTTOM + +#include +#include + + GC_INNER ptr_t GC_get_register_stack_base(void) + { + struct pst_vm_status vm_status; + + int i = 0; + while (pstat_getprocvm(&vm_status, sizeof(vm_status), 0, i++) == 1) { + if (vm_status.pst_type == PS_RSESTACK) { + return (ptr_t) vm_status.pst_vaddr; + } + } + + /* old way to get the register stackbottom */ + return (ptr_t)(((word)GC_stackbottom - BACKING_STORE_DISPLACEMENT - 1) + & ~(BACKING_STORE_ALIGNMENT - 1)); + } + +#endif /* HPUX_STACK_BOTTOM */ + +#ifdef LINUX_STACKBOTTOM + +# include +# include + +# define STAT_SKIP 27 /* Number of fields preceding startstack */ + /* field in /proc/self/stat */ + +# ifdef USE_LIBC_PRIVATES +# pragma weak __libc_stack_end + extern ptr_t __libc_stack_end; +# endif + +# ifdef IA64 +# ifdef USE_LIBC_PRIVATES +# pragma weak __libc_ia64_register_backing_store_base + extern ptr_t __libc_ia64_register_backing_store_base; +# endif + + GC_INNER ptr_t GC_get_register_stack_base(void) + { + ptr_t result; + +# ifdef USE_LIBC_PRIVATES + if (0 != &__libc_ia64_register_backing_store_base + && 0 != __libc_ia64_register_backing_store_base) { + /* Glibc 2.2.4 has a bug such that for dynamically linked */ + /* executables __libc_ia64_register_backing_store_base is */ + /* defined but uninitialized during constructor calls. */ + /* Hence we check for both nonzero address and value. */ + return __libc_ia64_register_backing_store_base; + } +# endif + result = backing_store_base_from_proc(); + if (0 == result) { + result = GC_find_limit(GC_save_regs_in_stack(), FALSE); + /* Now seems to work better than constant displacement */ + /* heuristic used in 6.X versions. The latter seems to */ + /* fail for 2.6 kernels. */ + } + return result; + } +# endif /* IA64 */ + + STATIC ptr_t GC_linux_main_stack_base(void) + { + /* We read the stack base value from /proc/self/stat. We do this */ + /* using direct I/O system calls in order to avoid calling malloc */ + /* in case REDIRECT_MALLOC is defined. */ +# ifndef STAT_READ + /* Also defined in pthread_support.c. */ +# define STAT_BUF_SIZE 4096 +# define STAT_READ read +# endif + /* Should probably call the real read, if read is wrapped. */ + char stat_buf[STAT_BUF_SIZE]; + int f; + word result; + int i, buf_offset = 0, len; + + /* First try the easy way. This should work for glibc 2.2 */ + /* This fails in a prelinked ("prelink" command) executable */ + /* since the correct value of __libc_stack_end never */ + /* becomes visible to us. The second test works around */ + /* this. */ +# ifdef USE_LIBC_PRIVATES + if (0 != &__libc_stack_end && 0 != __libc_stack_end ) { +# if defined(IA64) + /* Some versions of glibc set the address 16 bytes too */ + /* low while the initialization code is running. */ + if (((word)__libc_stack_end & 0xfff) + 0x10 < 0x1000) { + return __libc_stack_end + 0x10; + } /* Otherwise it's not safe to add 16 bytes and we fall */ + /* back to using /proc. */ +# elif defined(SPARC) + /* Older versions of glibc for 64-bit SPARC do not set this */ + /* variable correctly, it gets set to either zero or one. */ + if (__libc_stack_end != (ptr_t) (unsigned long)0x1) + return __libc_stack_end; +# else + return __libc_stack_end; +# endif + } +# endif + f = open("/proc/self/stat", O_RDONLY); + if (f < 0) + ABORT("Couldn't read /proc/self/stat"); + len = STAT_READ(f, stat_buf, STAT_BUF_SIZE); + close(f); + + /* Skip the required number of fields. This number is hopefully */ + /* constant across all Linux implementations. */ + for (i = 0; i < STAT_SKIP; ++i) { + while (buf_offset < len && isspace(stat_buf[buf_offset++])) { + /* empty */ + } + while (buf_offset < len && !isspace(stat_buf[buf_offset++])) { + /* empty */ + } + } + /* Skip spaces. */ + while (buf_offset < len && isspace(stat_buf[buf_offset])) { + buf_offset++; + } + /* Find the end of the number and cut the buffer there. */ + for (i = 0; buf_offset + i < len; i++) { + if (!isdigit(stat_buf[buf_offset + i])) break; + } + if (buf_offset + i >= len) ABORT("Could not parse /proc/self/stat"); + stat_buf[buf_offset + i] = '\0'; + + result = (word)STRTOULL(&stat_buf[buf_offset], NULL, 10); + if (result < 0x100000 || (result & (sizeof(word) - 1)) != 0) + ABORT("Absurd stack bottom value"); + return (ptr_t)result; + } +#endif /* LINUX_STACKBOTTOM */ + +#ifdef FREEBSD_STACKBOTTOM + /* This uses an undocumented sysctl call, but at least one expert */ + /* believes it will stay. */ + +# include +# include +# include + + STATIC ptr_t GC_freebsd_main_stack_base(void) + { + int nm[2] = {CTL_KERN, KERN_USRSTACK}; + ptr_t base; + size_t len = sizeof(ptr_t); + int r = sysctl(nm, 2, &base, &len, NULL, 0); + if (r) ABORT("Error getting main stack base"); + return base; + } +#endif /* FREEBSD_STACKBOTTOM */ + +#if defined(ECOS) || defined(NOSYS) + ptr_t GC_get_main_stack_base(void) + { + return STACKBOTTOM; + } +# define GET_MAIN_STACKBASE_SPECIAL +#elif defined(SYMBIAN) + extern int GC_get_main_symbian_stack_base(void); + ptr_t GC_get_main_stack_base(void) + { + return (ptr_t)GC_get_main_symbian_stack_base(); + } +# define GET_MAIN_STACKBASE_SPECIAL +#elif !defined(BEOS) && !defined(AMIGA) && !defined(OS2) \ + && !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) \ + && !defined(GC_OPENBSD_THREADS) \ + && (!defined(GC_SOLARIS_THREADS) || defined(_STRICT_STDC)) + +# if (defined(HAVE_PTHREAD_ATTR_GET_NP) || defined(HAVE_PTHREAD_GETATTR_NP)) \ + && (defined(THREADS) || defined(USE_GET_STACKBASE_FOR_MAIN)) +# include +# ifdef HAVE_PTHREAD_NP_H +# include /* for pthread_attr_get_np() */ +# endif +# elif defined(DARWIN) && !defined(NO_PTHREAD_GET_STACKADDR_NP) + /* We could use pthread_get_stackaddr_np even in case of a */ + /* single-threaded gclib (there is no -lpthread on Darwin). */ +# include +# undef STACKBOTTOM +# define STACKBOTTOM (ptr_t)pthread_get_stackaddr_np(pthread_self()) +# endif + + ptr_t GC_get_main_stack_base(void) + { + ptr_t result; +# if (defined(HAVE_PTHREAD_ATTR_GET_NP) \ + || defined(HAVE_PTHREAD_GETATTR_NP)) \ + && (defined(USE_GET_STACKBASE_FOR_MAIN) \ + || (defined(THREADS) && !defined(REDIRECT_MALLOC))) + pthread_attr_t attr; + void *stackaddr; + size_t size; + +# ifdef HAVE_PTHREAD_ATTR_GET_NP + if (pthread_attr_init(&attr) == 0 + && (pthread_attr_get_np(pthread_self(), &attr) == 0 + ? TRUE : (pthread_attr_destroy(&attr), FALSE))) +# else /* HAVE_PTHREAD_GETATTR_NP */ + if (pthread_getattr_np(pthread_self(), &attr) == 0) +# endif + { + if (pthread_attr_getstack(&attr, &stackaddr, &size) == 0 + && stackaddr != NULL) { + (void)pthread_attr_destroy(&attr); +# ifdef STACK_GROWS_DOWN + stackaddr = (char *)stackaddr + size; +# endif + return (ptr_t)stackaddr; + } + (void)pthread_attr_destroy(&attr); + } + WARN("pthread_getattr_np or pthread_attr_getstack failed" + " for main thread\n", 0); +# endif +# ifdef STACKBOTTOM + result = STACKBOTTOM; +# else +# define STACKBOTTOM_ALIGNMENT_M1 ((word)STACK_GRAN - 1) +# ifdef HEURISTIC1 +# ifdef STACK_GROWS_DOWN + result = (ptr_t)(((word)GC_approx_sp() + STACKBOTTOM_ALIGNMENT_M1) + & ~STACKBOTTOM_ALIGNMENT_M1); +# else + result = (ptr_t)((word)GC_approx_sp() & ~STACKBOTTOM_ALIGNMENT_M1); +# endif +# elif defined(LINUX_STACKBOTTOM) + result = GC_linux_main_stack_base(); +# elif defined(FREEBSD_STACKBOTTOM) + result = GC_freebsd_main_stack_base(); +# elif defined(HEURISTIC2) + { + ptr_t sp = GC_approx_sp(); +# ifdef STACK_GROWS_DOWN + result = GC_find_limit(sp, TRUE); +# if defined(HEURISTIC2_LIMIT) && !defined(CPPCHECK) + if ((word)result > (word)HEURISTIC2_LIMIT + && (word)sp < (word)HEURISTIC2_LIMIT) { + result = HEURISTIC2_LIMIT; + } +# endif +# else + result = GC_find_limit(sp, FALSE); +# if defined(HEURISTIC2_LIMIT) && !defined(CPPCHECK) + if ((word)result < (word)HEURISTIC2_LIMIT + && (word)sp > (word)HEURISTIC2_LIMIT) { + result = HEURISTIC2_LIMIT; + } +# endif +# endif + } +# elif defined(STACK_NOT_SCANNED) || defined(CPPCHECK) + result = NULL; +# else +# error None of HEURISTIC* and *STACKBOTTOM defined! +# endif +# if defined(STACK_GROWS_DOWN) && !defined(CPPCHECK) + if (result == 0) + result = (ptr_t)(signed_word)(-sizeof(ptr_t)); +# endif +# endif + GC_ASSERT((word)GC_approx_sp() HOTTER_THAN (word)result); + return(result); + } +# define GET_MAIN_STACKBASE_SPECIAL +#endif /* !AMIGA, !BEOS, !OPENBSD, !OS2, !Windows */ + +#if (defined(HAVE_PTHREAD_ATTR_GET_NP) || defined(HAVE_PTHREAD_GETATTR_NP)) \ + && defined(THREADS) && !defined(HAVE_GET_STACK_BASE) +# include +# ifdef HAVE_PTHREAD_NP_H +# include +# endif + + GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *b) + { + pthread_attr_t attr; + size_t size; +# ifdef IA64 + DCL_LOCK_STATE; +# endif + +# ifdef HAVE_PTHREAD_ATTR_GET_NP + if (pthread_attr_init(&attr) != 0) + ABORT("pthread_attr_init failed"); + if (pthread_attr_get_np(pthread_self(), &attr) != 0) { + WARN("pthread_attr_get_np failed\n", 0); + (void)pthread_attr_destroy(&attr); + return GC_UNIMPLEMENTED; + } +# else /* HAVE_PTHREAD_GETATTR_NP */ + if (pthread_getattr_np(pthread_self(), &attr) != 0) { + WARN("pthread_getattr_np failed\n", 0); + return GC_UNIMPLEMENTED; + } +# endif + if (pthread_attr_getstack(&attr, &(b -> mem_base), &size) != 0) { + ABORT("pthread_attr_getstack failed"); + } + (void)pthread_attr_destroy(&attr); +# ifdef STACK_GROWS_DOWN + b -> mem_base = (char *)(b -> mem_base) + size; +# endif +# ifdef IA64 + /* We could try backing_store_base_from_proc, but that's safe */ + /* only if no mappings are being asynchronously created. */ + /* Subtracting the size from the stack base doesn't work for at */ + /* least the main thread. */ + LOCK(); + { + IF_CANCEL(int cancel_state;) + ptr_t bsp; + ptr_t next_stack; + + DISABLE_CANCEL(cancel_state); + bsp = GC_save_regs_in_stack(); + next_stack = GC_greatest_stack_base_below(bsp); + if (0 == next_stack) { + b -> reg_base = GC_find_limit(bsp, FALSE); + } else { + /* Avoid walking backwards into preceding memory stack and */ + /* growing it. */ + b -> reg_base = GC_find_limit_with_bound(bsp, FALSE, next_stack); + } + RESTORE_CANCEL(cancel_state); + } + UNLOCK(); +# endif + return GC_SUCCESS; + } +# define HAVE_GET_STACK_BASE +#endif /* THREADS && (HAVE_PTHREAD_ATTR_GET_NP || HAVE_PTHREAD_GETATTR_NP) */ + +#if defined(GC_DARWIN_THREADS) && !defined(NO_PTHREAD_GET_STACKADDR_NP) +# include + + GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *b) + { + /* pthread_get_stackaddr_np() should return stack bottom (highest */ + /* stack address plus 1). */ + b->mem_base = pthread_get_stackaddr_np(pthread_self()); + GC_ASSERT((word)GC_approx_sp() HOTTER_THAN (word)b->mem_base); + return GC_SUCCESS; + } +# define HAVE_GET_STACK_BASE +#endif /* GC_DARWIN_THREADS */ + +#ifdef GC_OPENBSD_THREADS +# include +# include +# include + + /* Find the stack using pthread_stackseg_np(). */ + GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *sb) + { + stack_t stack; + if (pthread_stackseg_np(pthread_self(), &stack)) + ABORT("pthread_stackseg_np(self) failed"); + sb->mem_base = stack.ss_sp; + return GC_SUCCESS; + } +# define HAVE_GET_STACK_BASE +#endif /* GC_OPENBSD_THREADS */ + +#if defined(GC_SOLARIS_THREADS) && !defined(_STRICT_STDC) + +# include +# include +# include + + /* These variables are used to cache ss_sp value for the primordial */ + /* thread (it's better not to call thr_stksegment() twice for this */ + /* thread - see JDK bug #4352906). */ + static pthread_t stackbase_main_self = 0; + /* 0 means stackbase_main_ss_sp value is unset. */ + static void *stackbase_main_ss_sp = NULL; + + GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *b) + { + stack_t s; + pthread_t self = pthread_self(); + + if (self == stackbase_main_self) + { + /* If the client calls GC_get_stack_base() from the main thread */ + /* then just return the cached value. */ + b -> mem_base = stackbase_main_ss_sp; + GC_ASSERT(b -> mem_base != NULL); + return GC_SUCCESS; + } + + if (thr_stksegment(&s)) { + /* According to the manual, the only failure error code returned */ + /* is EAGAIN meaning "the information is not available due to the */ + /* thread is not yet completely initialized or it is an internal */ + /* thread" - this shouldn't happen here. */ + ABORT("thr_stksegment failed"); + } + /* s.ss_sp holds the pointer to the stack bottom. */ + GC_ASSERT((word)GC_approx_sp() HOTTER_THAN (word)s.ss_sp); + + if (!stackbase_main_self && thr_main() != 0) + { + /* Cache the stack base value for the primordial thread (this */ + /* is done during GC_init, so there is no race). */ + stackbase_main_ss_sp = s.ss_sp; + stackbase_main_self = self; + } + + b -> mem_base = s.ss_sp; + return GC_SUCCESS; + } +# define HAVE_GET_STACK_BASE +#endif /* GC_SOLARIS_THREADS */ + +#ifdef GC_RTEMS_PTHREADS + GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *sb) + { + sb->mem_base = rtems_get_stack_bottom(); + return GC_SUCCESS; + } +# define HAVE_GET_STACK_BASE +#endif /* GC_RTEMS_PTHREADS */ + +#ifndef HAVE_GET_STACK_BASE +# ifdef NEED_FIND_LIMIT + /* Retrieve stack base. */ + /* Using the GC_find_limit version is risky. */ + /* On IA64, for example, there is no guard page between the */ + /* stack of one thread and the register backing store of the */ + /* next. Thus this is likely to identify way too large a */ + /* "stack" and thus at least result in disastrous performance. */ + /* FIXME - Implement better strategies here. */ + GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *b) + { + IF_CANCEL(int cancel_state;) + DCL_LOCK_STATE; + + LOCK(); + DISABLE_CANCEL(cancel_state); /* May be unnecessary? */ +# ifdef STACK_GROWS_DOWN + b -> mem_base = GC_find_limit(GC_approx_sp(), TRUE); +# ifdef IA64 + b -> reg_base = GC_find_limit(GC_save_regs_in_stack(), FALSE); +# endif +# else + b -> mem_base = GC_find_limit(GC_approx_sp(), FALSE); +# endif + RESTORE_CANCEL(cancel_state); + UNLOCK(); + return GC_SUCCESS; + } +# else + GC_API int GC_CALL GC_get_stack_base( + struct GC_stack_base *b GC_ATTR_UNUSED) + { +# if defined(GET_MAIN_STACKBASE_SPECIAL) && !defined(THREADS) \ + && !defined(IA64) + b->mem_base = GC_get_main_stack_base(); + return GC_SUCCESS; +# else + return GC_UNIMPLEMENTED; +# endif + } +# endif /* !NEED_FIND_LIMIT */ +#endif /* !HAVE_GET_STACK_BASE */ + +#ifndef GET_MAIN_STACKBASE_SPECIAL + /* This is always called from the main thread. Default implementation. */ + ptr_t GC_get_main_stack_base(void) + { + struct GC_stack_base sb; + + if (GC_get_stack_base(&sb) != GC_SUCCESS) + ABORT("GC_get_stack_base failed"); + GC_ASSERT((word)GC_approx_sp() HOTTER_THAN (word)sb.mem_base); + return (ptr_t)sb.mem_base; + } +#endif /* !GET_MAIN_STACKBASE_SPECIAL */ + +/* Register static data segment(s) as roots. If more data segments are */ +/* added later then they need to be registered at that point (as we do */ +/* with SunOS dynamic loading), or GC_mark_roots needs to check for */ +/* them (as we do with PCR). Called with allocator lock held. */ +# ifdef OS2 + +void GC_register_data_segments(void) +{ + PTIB ptib; + PPIB ppib; + HMODULE module_handle; +# define PBUFSIZ 512 + UCHAR path[PBUFSIZ]; + FILE * myexefile; + struct exe_hdr hdrdos; /* MSDOS header. */ + struct e32_exe hdr386; /* Real header for my executable */ + struct o32_obj seg; /* Current segment */ + int nsegs; + +# if defined(CPPCHECK) + hdrdos.padding[0] = 0; /* to prevent "field unused" warnings */ + hdr386.exe_format_level = 0; + hdr386.os = 0; + hdr386.padding1[0] = 0; + hdr386.padding2[0] = 0; + seg.pagemap = 0; + seg.mapsize = 0; + seg.reserved = 0; +# endif + if (DosGetInfoBlocks(&ptib, &ppib) != NO_ERROR) { + ABORT("DosGetInfoBlocks failed"); + } + module_handle = ppib -> pib_hmte; + if (DosQueryModuleName(module_handle, PBUFSIZ, path) != NO_ERROR) { + ABORT("DosQueryModuleName failed"); + } + myexefile = fopen(path, "rb"); + if (myexefile == 0) { + ABORT_ARG1("Failed to open executable", ": %s", path); + } + if (fread((char *)(&hdrdos), 1, sizeof(hdrdos), myexefile) + < sizeof(hdrdos)) { + ABORT_ARG1("Could not read MSDOS header", " from: %s", path); + } + if (E_MAGIC(hdrdos) != EMAGIC) { + ABORT_ARG1("Bad DOS magic number", " in file: %s", path); + } + if (fseek(myexefile, E_LFANEW(hdrdos), SEEK_SET) != 0) { + ABORT_ARG1("Bad DOS magic number", " in file: %s", path); + } + if (fread((char *)(&hdr386), 1, sizeof(hdr386), myexefile) + < sizeof(hdr386)) { + ABORT_ARG1("Could not read OS/2 header", " from: %s", path); + } + if (E32_MAGIC1(hdr386) != E32MAGIC1 || E32_MAGIC2(hdr386) != E32MAGIC2) { + ABORT_ARG1("Bad OS/2 magic number", " in file: %s", path); + } + if (E32_BORDER(hdr386) != E32LEBO || E32_WORDER(hdr386) != E32LEWO) { + ABORT_ARG1("Bad byte order in executable", " file: %s", path); + } + if (E32_CPU(hdr386) == E32CPU286) { + ABORT_ARG1("GC cannot handle 80286 executables", ": %s", path); + } + if (fseek(myexefile, E_LFANEW(hdrdos) + E32_OBJTAB(hdr386), + SEEK_SET) != 0) { + ABORT_ARG1("Seek to object table failed", " in file: %s", path); + } + for (nsegs = E32_OBJCNT(hdr386); nsegs > 0; nsegs--) { + int flags; + if (fread((char *)(&seg), 1, sizeof(seg), myexefile) < sizeof(seg)) { + ABORT_ARG1("Could not read obj table entry", " from file: %s", path); + } + flags = O32_FLAGS(seg); + if (!(flags & OBJWRITE)) continue; + if (!(flags & OBJREAD)) continue; + if (flags & OBJINVALID) { + GC_err_printf("Object with invalid pages?\n"); + continue; + } + GC_add_roots_inner((ptr_t)O32_BASE(seg), + (ptr_t)(O32_BASE(seg)+O32_SIZE(seg)), FALSE); + } + (void)fclose(myexefile); +} + +# else /* !OS2 */ + +# if defined(GWW_VDB) +# ifndef MEM_WRITE_WATCH +# define MEM_WRITE_WATCH 0x200000 +# endif +# ifndef WRITE_WATCH_FLAG_RESET +# define WRITE_WATCH_FLAG_RESET 1 +# endif + + /* Since we can't easily check whether ULONG_PTR and SIZE_T are */ + /* defined in Win32 basetsd.h, we define own ULONG_PTR. */ +# define GC_ULONG_PTR word + + typedef UINT (WINAPI * GetWriteWatch_type)( + DWORD, PVOID, GC_ULONG_PTR /* SIZE_T */, + PVOID *, GC_ULONG_PTR *, PULONG); + static GetWriteWatch_type GetWriteWatch_func; + static DWORD GetWriteWatch_alloc_flag; + +# define GC_GWW_AVAILABLE() (GetWriteWatch_func != NULL) + + static void detect_GetWriteWatch(void) + { + static GC_bool done; + HMODULE hK32; + if (done) + return; + +# if defined(MPROTECT_VDB) + { + char * str = GETENV("GC_USE_GETWRITEWATCH"); +# if defined(GC_PREFER_MPROTECT_VDB) + if (str == NULL || (*str == '0' && *(str + 1) == '\0')) { + /* GC_USE_GETWRITEWATCH is unset or set to "0". */ + done = TRUE; /* falling back to MPROTECT_VDB strategy. */ + /* This should work as if GWW_VDB is undefined. */ + return; + } +# else + if (str != NULL && *str == '0' && *(str + 1) == '\0') { + /* GC_USE_GETWRITEWATCH is set "0". */ + done = TRUE; /* falling back to MPROTECT_VDB strategy. */ + return; + } +# endif + } +# endif + + hK32 = GetModuleHandle(TEXT("kernel32.dll")); + if (hK32 != (HMODULE)0 && + (GetWriteWatch_func = (GetWriteWatch_type)GetProcAddress(hK32, + "GetWriteWatch")) != NULL) { + /* Also check whether VirtualAlloc accepts MEM_WRITE_WATCH, */ + /* as some versions of kernel32.dll have one but not the */ + /* other, making the feature completely broken. */ + void * page = VirtualAlloc(NULL, GC_page_size, + MEM_WRITE_WATCH | MEM_RESERVE, + PAGE_READWRITE); + if (page != NULL) { + PVOID pages[16]; + GC_ULONG_PTR count = 16; + DWORD page_size; + /* Check that it actually works. In spite of some */ + /* documentation it actually seems to exist on W2K. */ + /* This test may be unnecessary, but ... */ + if (GetWriteWatch_func(WRITE_WATCH_FLAG_RESET, + page, GC_page_size, + pages, + &count, + &page_size) != 0) { + /* GetWriteWatch always fails. */ + GetWriteWatch_func = NULL; + } else { + GetWriteWatch_alloc_flag = MEM_WRITE_WATCH; + } + VirtualFree(page, 0 /* dwSize */, MEM_RELEASE); + } else { + /* GetWriteWatch will be useless. */ + GetWriteWatch_func = NULL; + } + } +# ifndef SMALL_CONFIG + if (GetWriteWatch_func == NULL) { + GC_COND_LOG_PRINTF("Did not find a usable GetWriteWatch()\n"); + } else { + GC_COND_LOG_PRINTF("Using GetWriteWatch()\n"); + } +# endif + done = TRUE; + } + +# else +# define GetWriteWatch_alloc_flag 0 +# endif /* !GWW_VDB */ + +# if defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32) + +# ifdef MSWIN32 + /* Unfortunately, we have to handle win32s very differently from NT, */ + /* Since VirtualQuery has very different semantics. In particular, */ + /* under win32s a VirtualQuery call on an unmapped page returns an */ + /* invalid result. Under NT, GC_register_data_segments is a no-op */ + /* and all real work is done by GC_register_dynamic_libraries. Under */ + /* win32s, we cannot find the data segments associated with dll's. */ + /* We register the main data segment here. */ + GC_INNER GC_bool GC_no_win32_dlls = FALSE; + /* This used to be set for gcc, to avoid dealing with */ + /* the structured exception handling issues. But we now have */ + /* assembly code to do that right. */ + + GC_INNER GC_bool GC_wnt = FALSE; + /* This is a Windows NT derivative, i.e. NT, W2K, XP or later. */ + + GC_INNER void GC_init_win32(void) + { +# if defined(_WIN64) || (defined(_MSC_VER) && _MSC_VER >= 1800) + /* MS Visual Studio 2013 deprecates GetVersion, but on the other */ + /* hand it cannot be used to target pre-Win2K. */ + GC_wnt = TRUE; +# else + /* Set GC_wnt. If we're running under win32s, assume that no */ + /* DLLs will be loaded. I doubt anyone still runs win32s, but... */ + DWORD v = GetVersion(); + + GC_wnt = !(v & 0x80000000); + GC_no_win32_dlls |= ((!GC_wnt) && (v & 0xff) <= 3); +# endif +# ifdef USE_MUNMAP + if (GC_no_win32_dlls) { + /* Turn off unmapping for safety (since may not work well with */ + /* GlobalAlloc). */ + GC_unmap_threshold = 0; + } +# endif + } + + /* Return the smallest address a such that VirtualQuery */ + /* returns correct results for all addresses between a and start. */ + /* Assumes VirtualQuery returns correct information for start. */ + STATIC ptr_t GC_least_described_address(ptr_t start) + { + MEMORY_BASIC_INFORMATION buf; + LPVOID limit; + ptr_t p; + + limit = GC_sysinfo.lpMinimumApplicationAddress; + p = (ptr_t)((word)start & ~(GC_page_size - 1)); + for (;;) { + size_t result; + LPVOID q = (LPVOID)(p - GC_page_size); + + if ((word)q > (word)p /* underflow */ || (word)q < (word)limit) break; + result = VirtualQuery(q, &buf, sizeof(buf)); + if (result != sizeof(buf) || buf.AllocationBase == 0) break; + p = (ptr_t)(buf.AllocationBase); + } + return p; + } +# endif /* MSWIN32 */ + +# ifndef REDIRECT_MALLOC + /* We maintain a linked list of AllocationBase values that we know */ + /* correspond to malloc heap sections. Currently this is only called */ + /* during a GC. But there is some hope that for long running */ + /* programs we will eventually see most heap sections. */ + + /* In the long run, it would be more reliable to occasionally walk */ + /* the malloc heap with HeapWalk on the default heap. But that */ + /* apparently works only for NT-based Windows. */ + + STATIC size_t GC_max_root_size = 100000; /* Appr. largest root size. */ + +# ifdef USE_WINALLOC + /* In the long run, a better data structure would also be nice ... */ + STATIC struct GC_malloc_heap_list { + void * allocation_base; + struct GC_malloc_heap_list *next; + } *GC_malloc_heap_l = 0; + + /* Is p the base of one of the malloc heap sections we already know */ + /* about? */ + STATIC GC_bool GC_is_malloc_heap_base(ptr_t p) + { + struct GC_malloc_heap_list *q = GC_malloc_heap_l; + + while (0 != q) { + if (q -> allocation_base == p) return TRUE; + q = q -> next; + } + return FALSE; + } + + STATIC void *GC_get_allocation_base(void *p) + { + MEMORY_BASIC_INFORMATION buf; + size_t result = VirtualQuery(p, &buf, sizeof(buf)); + if (result != sizeof(buf)) { + ABORT("Weird VirtualQuery result"); + } + return buf.AllocationBase; + } + + GC_INNER void GC_add_current_malloc_heap(void) + { + struct GC_malloc_heap_list *new_l = + malloc(sizeof(struct GC_malloc_heap_list)); + void * candidate = GC_get_allocation_base(new_l); + + if (new_l == 0) return; + if (GC_is_malloc_heap_base(candidate)) { + /* Try a little harder to find malloc heap. */ + size_t req_size = 10000; + do { + void *p = malloc(req_size); + if (0 == p) { + free(new_l); + return; + } + candidate = GC_get_allocation_base(p); + free(p); + req_size *= 2; + } while (GC_is_malloc_heap_base(candidate) + && req_size < GC_max_root_size/10 && req_size < 500000); + if (GC_is_malloc_heap_base(candidate)) { + free(new_l); + return; + } + } + GC_COND_LOG_PRINTF("Found new system malloc AllocationBase at %p\n", + candidate); + new_l -> allocation_base = candidate; + new_l -> next = GC_malloc_heap_l; + GC_malloc_heap_l = new_l; + } +# endif /* USE_WINALLOC */ + +# endif /* !REDIRECT_MALLOC */ + + STATIC word GC_n_heap_bases = 0; /* See GC_heap_bases. */ + + /* Is p the start of either the malloc heap, or of one of our */ + /* heap sections? */ + GC_INNER GC_bool GC_is_heap_base(ptr_t p) + { + unsigned i; +# ifndef REDIRECT_MALLOC + if (GC_root_size > GC_max_root_size) GC_max_root_size = GC_root_size; +# ifdef USE_WINALLOC + if (GC_is_malloc_heap_base(p)) return TRUE; +# endif +# endif + for (i = 0; i < GC_n_heap_bases; i++) { + if (GC_heap_bases[i] == p) return TRUE; + } + return FALSE; + } + +#ifdef MSWIN32 + STATIC void GC_register_root_section(ptr_t static_root) + { + MEMORY_BASIC_INFORMATION buf; + LPVOID p; + char * base; + char * limit; + + if (!GC_no_win32_dlls) return; + p = base = limit = GC_least_described_address(static_root); + while ((word)p < (word)GC_sysinfo.lpMaximumApplicationAddress) { + size_t result = VirtualQuery(p, &buf, sizeof(buf)); + char * new_limit; + DWORD protect; + + if (result != sizeof(buf) || buf.AllocationBase == 0 + || GC_is_heap_base(buf.AllocationBase)) break; + new_limit = (char *)p + buf.RegionSize; + protect = buf.Protect; + if (buf.State == MEM_COMMIT + && is_writable(protect)) { + if ((char *)p == limit) { + limit = new_limit; + } else { + if (base != limit) GC_add_roots_inner(base, limit, FALSE); + base = p; + limit = new_limit; + } + } + if ((word)p > (word)new_limit /* overflow */) break; + p = (LPVOID)new_limit; + } + if (base != limit) GC_add_roots_inner(base, limit, FALSE); + } +#endif /* MSWIN32 */ + + void GC_register_data_segments(void) + { +# ifdef MSWIN32 + GC_register_root_section((ptr_t)&GC_pages_executable); + /* any other GC global variable would fit too. */ +# endif + } + +# else /* !OS2 && !Windows */ + +# if (defined(SVR4) || defined(AUX) || defined(DGUX) \ + || (defined(LINUX) && defined(SPARC))) && !defined(PCR) + ptr_t GC_SysVGetDataStart(size_t max_page_size, ptr_t etext_addr) + { + word text_end = ((word)(etext_addr) + sizeof(word) - 1) + & ~(word)(sizeof(word) - 1); + /* etext rounded to word boundary */ + word next_page = ((text_end + (word)max_page_size - 1) + & ~((word)max_page_size - 1)); + word page_offset = (text_end & ((word)max_page_size - 1)); + char * volatile result = (char *)(next_page + page_offset); + /* Note that this isn't equivalent to just adding */ + /* max_page_size to &etext if &etext is at a page boundary */ + + GC_setup_temporary_fault_handler(); + if (SETJMP(GC_jmp_buf) == 0) { + /* Try writing to the address. */ +# ifdef AO_HAVE_fetch_and_add + volatile AO_t zero = 0; + (void)AO_fetch_and_add((volatile AO_t *)result, zero); +# else + /* Fallback to non-atomic fetch-and-store. */ + char v = *result; +# if defined(CPPCHECK) + GC_noop1((word)&v); +# endif + *result = v; +# endif + GC_reset_fault_handler(); + } else { + GC_reset_fault_handler(); + /* We got here via a longjmp. The address is not readable. */ + /* This is known to happen under Solaris 2.4 + gcc, which place */ + /* string constants in the text segment, but after etext. */ + /* Use plan B. Note that we now know there is a gap between */ + /* text and data segments, so plan A brought us something. */ + result = (char *)GC_find_limit(DATAEND, FALSE); + } + return((ptr_t)result); + } +# endif + +#ifdef DATASTART_USES_BSDGETDATASTART +/* Its unclear whether this should be identical to the above, or */ +/* whether it should apply to non-X86 architectures. */ +/* For now we don't assume that there is always an empty page after */ +/* etext. But in some cases there actually seems to be slightly more. */ +/* This also deals with holes between read-only data and writable data. */ + GC_INNER ptr_t GC_FreeBSDGetDataStart(size_t max_page_size, + ptr_t etext_addr) + { + word text_end = ((word)(etext_addr) + sizeof(word) - 1) + & ~(word)(sizeof(word) - 1); + /* etext rounded to word boundary */ + volatile word next_page = (text_end + (word)max_page_size - 1) + & ~((word)max_page_size - 1); + volatile ptr_t result = (ptr_t)text_end; + GC_setup_temporary_fault_handler(); + if (SETJMP(GC_jmp_buf) == 0) { + /* Try reading at the address. */ + /* This should happen before there is another thread. */ + for (; next_page < (word)DATAEND; next_page += (word)max_page_size) + *(volatile char *)next_page; + GC_reset_fault_handler(); + } else { + GC_reset_fault_handler(); + /* As above, we go to plan B */ + result = GC_find_limit(DATAEND, FALSE); + } + return(result); + } +#endif /* DATASTART_USES_BSDGETDATASTART */ + +#ifdef AMIGA + +# define GC_AMIGA_DS +# include "extra/AmigaOS.c" +# undef GC_AMIGA_DS + +#elif defined(OPENBSD) + +/* Depending on arch alignment, there can be multiple holes */ +/* between DATASTART and DATAEND. Scan in DATASTART .. DATAEND */ +/* and register each region. */ +void GC_register_data_segments(void) +{ + ptr_t region_start = DATASTART; + + if ((word)region_start - 1U >= (word)DATAEND) + ABORT_ARG2("Wrong DATASTART/END pair", + ": %p .. %p", (void *)region_start, (void *)DATAEND); + for (;;) { + ptr_t region_end = GC_find_limit_openbsd(region_start, DATAEND); + + GC_add_roots_inner(region_start, region_end, FALSE); + if ((word)region_end >= (word)DATAEND) + break; + region_start = GC_skip_hole_openbsd(region_end, DATAEND); + } +} + +# else /* !OS2 && !Windows && !AMIGA && !OPENBSD */ + +void GC_register_data_segments(void) +{ +# if !defined(PCR) && !defined(MACOS) +# if defined(REDIRECT_MALLOC) && defined(GC_SOLARIS_THREADS) + /* As of Solaris 2.3, the Solaris threads implementation */ + /* allocates the data structure for the initial thread with */ + /* sbrk at process startup. It needs to be scanned, so that */ + /* we don't lose some malloc allocated data structures */ + /* hanging from it. We're on thin ice here ... */ + extern caddr_t sbrk(int); + + GC_ASSERT(DATASTART); + { + ptr_t p = (ptr_t)sbrk(0); + if ((word)DATASTART < (word)p) + GC_add_roots_inner(DATASTART, p, FALSE); + } +# else + if ((word)DATASTART - 1U >= (word)DATAEND) { + /* Subtract one to check also for NULL */ + /* without a compiler warning. */ + ABORT_ARG2("Wrong DATASTART/END pair", + ": %p .. %p", (void *)DATASTART, (void *)DATAEND); + } + GC_add_roots_inner(DATASTART, DATAEND, FALSE); +# ifdef GC_HAVE_DATAREGION2 + if ((word)DATASTART2 - 1U >= (word)DATAEND2) + ABORT_ARG2("Wrong DATASTART/END2 pair", + ": %p .. %p", (void *)DATASTART2, (void *)DATAEND2); + GC_add_roots_inner(DATASTART2, DATAEND2, FALSE); +# endif +# endif +# endif +# if defined(MACOS) + { +# if defined(THINK_C) + extern void* GC_MacGetDataStart(void); + /* globals begin above stack and end at a5. */ + GC_add_roots_inner((ptr_t)GC_MacGetDataStart(), + (ptr_t)LMGetCurrentA5(), FALSE); +# else +# if defined(__MWERKS__) +# if !__POWERPC__ + extern void* GC_MacGetDataStart(void); + /* MATTHEW: Function to handle Far Globals (CW Pro 3) */ +# if __option(far_data) + extern void* GC_MacGetDataEnd(void); +# endif + /* globals begin above stack and end at a5. */ + GC_add_roots_inner((ptr_t)GC_MacGetDataStart(), + (ptr_t)LMGetCurrentA5(), FALSE); + /* MATTHEW: Handle Far Globals */ +# if __option(far_data) + /* Far globals follow he QD globals: */ + GC_add_roots_inner((ptr_t)LMGetCurrentA5(), + (ptr_t)GC_MacGetDataEnd(), FALSE); +# endif +# else + extern char __data_start__[], __data_end__[]; + GC_add_roots_inner((ptr_t)&__data_start__, + (ptr_t)&__data_end__, FALSE); +# endif /* __POWERPC__ */ +# endif /* __MWERKS__ */ +# endif /* !THINK_C */ + } +# endif /* MACOS */ + + /* Dynamic libraries are added at every collection, since they may */ + /* change. */ +} + +# endif /* !AMIGA */ +# endif /* !MSWIN32 && !MSWINCE */ +# endif /* !OS2 */ + +/* + * Auxiliary routines for obtaining memory from OS. + */ + +# if !defined(OS2) && !defined(PCR) && !defined(AMIGA) \ + && !defined(USE_WINALLOC) && !defined(MACOS) && !defined(DOS4GW) \ + && !defined(NONSTOP) && !defined(SN_TARGET_PS3) && !defined(RTEMS) \ + && !defined(__CC_ARM) + +# define SBRK_ARG_T ptrdiff_t + +#if defined(MMAP_SUPPORTED) + +#ifdef USE_MMAP_FIXED +# define GC_MMAP_FLAGS MAP_FIXED | MAP_PRIVATE + /* Seems to yield better performance on Solaris 2, but can */ + /* be unreliable if something is already mapped at the address. */ +#else +# define GC_MMAP_FLAGS MAP_PRIVATE +#endif + +#ifdef USE_MMAP_ANON +# define zero_fd -1 +# if defined(MAP_ANONYMOUS) && !defined(CPPCHECK) +# define OPT_MAP_ANON MAP_ANONYMOUS +# else +# define OPT_MAP_ANON MAP_ANON +# endif +#else + static int zero_fd; +# define OPT_MAP_ANON 0 +#endif + +#ifdef SYMBIAN + extern char* GC_get_private_path_and_zero_file(void); +#endif + +STATIC ptr_t GC_unix_mmap_get_mem(size_t bytes) +{ + void *result; + static ptr_t last_addr = HEAP_START; + +# ifndef USE_MMAP_ANON + static GC_bool initialized = FALSE; + + if (!EXPECT(initialized, TRUE)) { +# ifdef SYMBIAN + char* path = GC_get_private_path_and_zero_file(); + zero_fd = open(path, O_RDWR | O_CREAT, 0666); + free(path); +# else + zero_fd = open("/dev/zero", O_RDONLY); +# endif + if (zero_fd == -1) + ABORT("Could not open /dev/zero"); + if (fcntl(zero_fd, F_SETFD, FD_CLOEXEC) == -1) + WARN("Could not set FD_CLOEXEC for /dev/zero\n", 0); + + initialized = TRUE; + } +# endif + + if (bytes & (GC_page_size - 1)) ABORT("Bad GET_MEM arg"); + result = mmap(last_addr, bytes, (PROT_READ | PROT_WRITE) + | (GC_pages_executable ? PROT_EXEC : 0), + GC_MMAP_FLAGS | OPT_MAP_ANON, zero_fd, 0/* offset */); +# undef IGNORE_PAGES_EXECUTABLE + + if (result == MAP_FAILED) return(0); + last_addr = (ptr_t)(((word)result + bytes + GC_page_size - 1) + & ~(GC_page_size - 1)); +# if !defined(LINUX) + if (last_addr == 0) { + /* Oops. We got the end of the address space. This isn't */ + /* usable by arbitrary C code, since one-past-end pointers */ + /* don't work, so we discard it and try again. */ + munmap(result, ~GC_page_size - (size_t)result + 1); + /* Leave last page mapped, so we can't repeat. */ + return GC_unix_mmap_get_mem(bytes); + } +# else + GC_ASSERT(last_addr != 0); +# endif + if (((word)result % HBLKSIZE) != 0) + ABORT( + "GC_unix_get_mem: Memory returned by mmap is not aligned to HBLKSIZE."); + return((ptr_t)result); +} + +# endif /* MMAP_SUPPORTED */ + +#if defined(USE_MMAP) + ptr_t GC_unix_get_mem(size_t bytes) + { + return GC_unix_mmap_get_mem(bytes); + } +#else /* !USE_MMAP */ + +STATIC ptr_t GC_unix_sbrk_get_mem(size_t bytes) +{ + ptr_t result; +# ifdef IRIX5 + /* Bare sbrk isn't thread safe. Play by malloc rules. */ + /* The equivalent may be needed on other systems as well. */ + __LOCK_MALLOC(); +# endif + { + ptr_t cur_brk = (ptr_t)sbrk(0); + SBRK_ARG_T lsbs = (word)cur_brk & (GC_page_size-1); + + if ((SBRK_ARG_T)bytes < 0) { + result = 0; /* too big */ + goto out; + } + if (lsbs != 0) { + if((ptr_t)sbrk((SBRK_ARG_T)GC_page_size - lsbs) == (ptr_t)(-1)) { + result = 0; + goto out; + } + } +# ifdef ADD_HEAP_GUARD_PAGES + /* This is useful for catching severe memory overwrite problems that */ + /* span heap sections. It shouldn't otherwise be turned on. */ + { + ptr_t guard = (ptr_t)sbrk((SBRK_ARG_T)GC_page_size); + if (mprotect(guard, GC_page_size, PROT_NONE) != 0) + ABORT("ADD_HEAP_GUARD_PAGES: mprotect failed"); + } +# endif /* ADD_HEAP_GUARD_PAGES */ + result = (ptr_t)sbrk((SBRK_ARG_T)bytes); + if (result == (ptr_t)(-1)) result = 0; + } + out: +# ifdef IRIX5 + __UNLOCK_MALLOC(); +# endif + return(result); +} + +ptr_t GC_unix_get_mem(size_t bytes) +{ +# if defined(MMAP_SUPPORTED) + /* By default, we try both sbrk and mmap, in that order. */ + static GC_bool sbrk_failed = FALSE; + ptr_t result = 0; + + if (!sbrk_failed) result = GC_unix_sbrk_get_mem(bytes); + if (0 == result) { + sbrk_failed = TRUE; + result = GC_unix_mmap_get_mem(bytes); + } + if (0 == result) { + /* Try sbrk again, in case sbrk memory became available. */ + result = GC_unix_sbrk_get_mem(bytes); + } + return result; +# else /* !MMAP_SUPPORTED */ + return GC_unix_sbrk_get_mem(bytes); +# endif +} + +#endif /* !USE_MMAP */ + +# endif /* UN*X */ + +# ifdef OS2 + +void * os2_alloc(size_t bytes) +{ + void * result; + + if (DosAllocMem(&result, bytes, (PAG_READ | PAG_WRITE | PAG_COMMIT) + | (GC_pages_executable ? PAG_EXECUTE : 0)) + != NO_ERROR) { + return(0); + } + /* FIXME: What's the purpose of this recursion? (Probably, if */ + /* DosAllocMem returns memory at 0 address then just retry once.) */ + if (result == 0) return(os2_alloc(bytes)); + return(result); +} + +# endif /* OS2 */ + +#ifdef MSWINCE + ptr_t GC_wince_get_mem(size_t bytes) + { + ptr_t result = 0; /* initialized to prevent warning. */ + word i; + + bytes = ROUNDUP_PAGESIZE(bytes); + + /* Try to find reserved, uncommitted pages */ + for (i = 0; i < GC_n_heap_bases; i++) { + if (((word)(-(signed_word)GC_heap_lengths[i]) + & (GC_sysinfo.dwAllocationGranularity-1)) + >= bytes) { + result = GC_heap_bases[i] + GC_heap_lengths[i]; + break; + } + } + + if (i == GC_n_heap_bases) { + /* Reserve more pages */ + size_t res_bytes = + SIZET_SAT_ADD(bytes, (size_t)GC_sysinfo.dwAllocationGranularity-1) + & ~((size_t)GC_sysinfo.dwAllocationGranularity-1); + /* If we ever support MPROTECT_VDB here, we will probably need to */ + /* ensure that res_bytes is strictly > bytes, so that VirtualProtect */ + /* never spans regions. It seems to be OK for a VirtualFree */ + /* argument to span regions, so we should be OK for now. */ + result = (ptr_t) VirtualAlloc(NULL, res_bytes, + MEM_RESERVE | MEM_TOP_DOWN, + GC_pages_executable ? PAGE_EXECUTE_READWRITE : + PAGE_READWRITE); + if (HBLKDISPL(result) != 0) ABORT("Bad VirtualAlloc result"); + /* If I read the documentation correctly, this can */ + /* only happen if HBLKSIZE > 64k or not a power of 2. */ + if (GC_n_heap_bases >= MAX_HEAP_SECTS) ABORT("Too many heap sections"); + if (result == NULL) return NULL; + GC_heap_bases[GC_n_heap_bases] = result; + GC_heap_lengths[GC_n_heap_bases] = 0; + GC_n_heap_bases++; + } + + /* Commit pages */ + result = (ptr_t) VirtualAlloc(result, bytes, MEM_COMMIT, + GC_pages_executable ? PAGE_EXECUTE_READWRITE : + PAGE_READWRITE); +# undef IGNORE_PAGES_EXECUTABLE + + if (result != NULL) { + if (HBLKDISPL(result) != 0) ABORT("Bad VirtualAlloc result"); + GC_heap_lengths[i] += bytes; + } + + return(result); + } + +#elif defined(USE_WINALLOC) || defined(CYGWIN32) + +# ifdef USE_GLOBAL_ALLOC +# define GLOBAL_ALLOC_TEST 1 +# else +# define GLOBAL_ALLOC_TEST GC_no_win32_dlls +# endif + +# if (defined(GC_USE_MEM_TOP_DOWN) && defined(USE_WINALLOC)) \ + || defined(CPPCHECK) + DWORD GC_mem_top_down = MEM_TOP_DOWN; + /* Use GC_USE_MEM_TOP_DOWN for better 64-bit */ + /* testing. Otherwise all addresses tend to */ + /* end up in first 4GB, hiding bugs. */ +# else +# define GC_mem_top_down 0 +# endif /* !GC_USE_MEM_TOP_DOWN */ + + ptr_t GC_win32_get_mem(size_t bytes) + { + ptr_t result; + +# ifndef USE_WINALLOC + result = GC_unix_get_mem(bytes); +# else +# ifdef MSWIN32 + if (GLOBAL_ALLOC_TEST) { + /* VirtualAlloc doesn't like PAGE_EXECUTE_READWRITE. */ + /* There are also unconfirmed rumors of other */ + /* problems, so we dodge the issue. */ + result = (ptr_t)GlobalAlloc(0, SIZET_SAT_ADD(bytes, HBLKSIZE)); + /* Align it at HBLKSIZE boundary. */ + result = (ptr_t)(((word)result + HBLKSIZE - 1) + & ~(word)(HBLKSIZE - 1)); + } else +# endif + /* else */ { + /* VirtualProtect only works on regions returned by a */ + /* single VirtualAlloc call. Thus we allocate one */ + /* extra page, which will prevent merging of blocks */ + /* in separate regions, and eliminate any temptation */ + /* to call VirtualProtect on a range spanning regions. */ + /* This wastes a small amount of memory, and risks */ + /* increased fragmentation. But better alternatives */ + /* would require effort. */ +# ifdef MPROTECT_VDB + /* We can't check for GC_incremental here (because */ + /* GC_enable_incremental() might be called some time */ + /* later after the GC initialization). */ +# ifdef GWW_VDB +# define VIRTUAL_ALLOC_PAD (GC_GWW_AVAILABLE() ? 0 : 1) +# else +# define VIRTUAL_ALLOC_PAD 1 +# endif +# else +# define VIRTUAL_ALLOC_PAD 0 +# endif + /* Pass the MEM_WRITE_WATCH only if GetWriteWatch-based */ + /* VDBs are enabled and the GetWriteWatch function is */ + /* available. Otherwise we waste resources or possibly */ + /* cause VirtualAlloc to fail (observed in Windows 2000 */ + /* SP2). */ + result = (ptr_t) VirtualAlloc(NULL, + SIZET_SAT_ADD(bytes, VIRTUAL_ALLOC_PAD), + GetWriteWatch_alloc_flag + | (MEM_COMMIT | MEM_RESERVE) + | GC_mem_top_down, + GC_pages_executable ? PAGE_EXECUTE_READWRITE : + PAGE_READWRITE); +# undef IGNORE_PAGES_EXECUTABLE + } +# endif /* USE_WINALLOC */ + if (HBLKDISPL(result) != 0) ABORT("Bad VirtualAlloc result"); + /* If I read the documentation correctly, this can */ + /* only happen if HBLKSIZE > 64k or not a power of 2. */ + if (GC_n_heap_bases >= MAX_HEAP_SECTS) ABORT("Too many heap sections"); + if (0 != result) GC_heap_bases[GC_n_heap_bases++] = result; + return(result); + } + + GC_API void GC_CALL GC_win32_free_heap(void) + { +# ifndef CYGWIN32 + if (GLOBAL_ALLOC_TEST) +# endif + { + while (GC_n_heap_bases-- > 0) { +# ifdef CYGWIN32 + /* FIXME: Is it OK to use non-GC free() here? */ +# else + GlobalFree(GC_heap_bases[GC_n_heap_bases]); +# endif + GC_heap_bases[GC_n_heap_bases] = 0; + } + } /* else */ +# ifndef CYGWIN32 + else { + /* Avoiding VirtualAlloc leak. */ + while (GC_n_heap_bases > 0) { + VirtualFree(GC_heap_bases[--GC_n_heap_bases], 0, MEM_RELEASE); + GC_heap_bases[GC_n_heap_bases] = 0; + } + } +# endif + } +#endif /* USE_WINALLOC || CYGWIN32 */ + +#ifdef AMIGA +# define GC_AMIGA_AM +# include "extra/AmigaOS.c" +# undef GC_AMIGA_AM +#endif + +#ifdef USE_MUNMAP + +/* For now, this only works on Win32/WinCE and some Unix-like */ +/* systems. If you have something else, don't define */ +/* USE_MUNMAP. */ + +#if !defined(MSWIN32) && !defined(MSWINCE) +# include +# include +# include +# include +#endif + +/* Compute a page aligned starting address for the unmap */ +/* operation on a block of size bytes starting at start. */ +/* Return 0 if the block is too small to make this feasible. */ +STATIC ptr_t GC_unmap_start(ptr_t start, size_t bytes) +{ + ptr_t result = (ptr_t)(((word)start + GC_page_size - 1) + & ~(GC_page_size - 1)); + + if ((word)(result + GC_page_size) > (word)(start + bytes)) return 0; + return result; +} + +/* Compute end address for an unmap operation on the indicated */ +/* block. */ +STATIC ptr_t GC_unmap_end(ptr_t start, size_t bytes) +{ + return (ptr_t)((word)(start + bytes) & ~(GC_page_size - 1)); +} + +/* Under Win32/WinCE we commit (map) and decommit (unmap) */ +/* memory using VirtualAlloc and VirtualFree. These functions */ +/* work on individual allocations of virtual memory, made */ +/* previously using VirtualAlloc with the MEM_RESERVE flag. */ +/* The ranges we need to (de)commit may span several of these */ +/* allocations; therefore we use VirtualQuery to check */ +/* allocation lengths, and split up the range as necessary. */ + +/* We assume that GC_remap is called on exactly the same range */ +/* as a previous call to GC_unmap. It is safe to consistently */ +/* round the endpoints in both places. */ +GC_INNER void GC_unmap(ptr_t start, size_t bytes) +{ + ptr_t start_addr = GC_unmap_start(start, bytes); + ptr_t end_addr = GC_unmap_end(start, bytes); + word len = end_addr - start_addr; + + if (0 == start_addr) return; +# ifdef USE_WINALLOC + while (len != 0) { + MEMORY_BASIC_INFORMATION mem_info; + word free_len; + + if (VirtualQuery(start_addr, &mem_info, sizeof(mem_info)) + != sizeof(mem_info)) + ABORT("Weird VirtualQuery result"); + free_len = (len < mem_info.RegionSize) ? len : mem_info.RegionSize; + if (!VirtualFree(start_addr, free_len, MEM_DECOMMIT)) + ABORT("VirtualFree failed"); + GC_unmapped_bytes += free_len; + start_addr += free_len; + len -= free_len; + } +# else + /* We immediately remap it to prevent an intervening mmap from */ + /* accidentally grabbing the same address space. */ + { +# ifdef CYGWIN32 + /* Calling mmap() with the new protection flags on an */ + /* existing memory map with MAP_FIXED is broken on Cygwin. */ + /* However, calling mprotect() on the given address range */ + /* with PROT_NONE seems to work fine. */ + if (mprotect(start_addr, len, PROT_NONE)) + ABORT("mprotect(PROT_NONE) failed"); +# else + void * result = mmap(start_addr, len, PROT_NONE, + MAP_PRIVATE | MAP_FIXED | OPT_MAP_ANON, + zero_fd, 0/* offset */); + + if (result != (void *)start_addr) + ABORT("mmap(PROT_NONE) failed"); +# if defined(CPPCHECK) || defined(LINT2) + /* Explicitly store the resource handle to a global variable. */ + GC_noop1((word)result); +# endif +# endif /* !CYGWIN32 */ + } + GC_unmapped_bytes += len; +# endif +} + +GC_INNER void GC_remap(ptr_t start, size_t bytes) +{ + ptr_t start_addr = GC_unmap_start(start, bytes); + ptr_t end_addr = GC_unmap_end(start, bytes); + word len = end_addr - start_addr; + if (0 == start_addr) return; + + /* FIXME: Handle out-of-memory correctly (at least for Win32) */ +# ifdef USE_WINALLOC + while (len != 0) { + MEMORY_BASIC_INFORMATION mem_info; + word alloc_len; + ptr_t result; + + if (VirtualQuery(start_addr, &mem_info, sizeof(mem_info)) + != sizeof(mem_info)) + ABORT("Weird VirtualQuery result"); + alloc_len = (len < mem_info.RegionSize) ? len : mem_info.RegionSize; + result = VirtualAlloc(start_addr, alloc_len, MEM_COMMIT, + GC_pages_executable ? PAGE_EXECUTE_READWRITE : + PAGE_READWRITE); + if (result != start_addr) { + if (GetLastError() == ERROR_NOT_ENOUGH_MEMORY || + GetLastError() == ERROR_OUTOFMEMORY) { + ABORT("Not enough memory to process remapping"); + } else { + ABORT("VirtualAlloc remapping failed"); + } + } +# ifdef LINT2 + GC_noop1((word)result); +# endif + GC_unmapped_bytes -= alloc_len; + start_addr += alloc_len; + len -= alloc_len; + } +# else + /* It was already remapped with PROT_NONE. */ + { +# ifdef NACL + /* NaCl does not expose mprotect, but mmap should work fine. */ + void *result = mmap(start_addr, len, (PROT_READ | PROT_WRITE) + | (GC_pages_executable ? PROT_EXEC : 0), + MAP_PRIVATE | MAP_FIXED | OPT_MAP_ANON, + zero_fd, 0 /* offset */); + if (result != (void *)start_addr) + ABORT("mmap as mprotect failed"); +# if defined(CPPCHECK) || defined(LINT2) + GC_noop1((word)result); +# endif +# else + if (mprotect(start_addr, len, (PROT_READ | PROT_WRITE) + | (GC_pages_executable ? PROT_EXEC : 0)) != 0) { + ABORT_ARG3("mprotect remapping failed", + " at %p (length %lu), errcode= %d", + (void *)start_addr, (unsigned long)len, errno); + } +# endif /* !NACL */ + } +# undef IGNORE_PAGES_EXECUTABLE + GC_unmapped_bytes -= len; +# endif +} + +/* Two adjacent blocks have already been unmapped and are about to */ +/* be merged. Unmap the whole block. This typically requires */ +/* that we unmap a small section in the middle that was not previously */ +/* unmapped due to alignment constraints. */ +GC_INNER void GC_unmap_gap(ptr_t start1, size_t bytes1, ptr_t start2, + size_t bytes2) +{ + ptr_t start1_addr = GC_unmap_start(start1, bytes1); + ptr_t end1_addr = GC_unmap_end(start1, bytes1); + ptr_t start2_addr = GC_unmap_start(start2, bytes2); + ptr_t start_addr = end1_addr; + ptr_t end_addr = start2_addr; + size_t len; + + GC_ASSERT(start1 + bytes1 == start2); + if (0 == start1_addr) start_addr = GC_unmap_start(start1, bytes1 + bytes2); + if (0 == start2_addr) end_addr = GC_unmap_end(start1, bytes1 + bytes2); + if (0 == start_addr) return; + len = end_addr - start_addr; +# ifdef USE_WINALLOC + while (len != 0) { + MEMORY_BASIC_INFORMATION mem_info; + word free_len; + + if (VirtualQuery(start_addr, &mem_info, sizeof(mem_info)) + != sizeof(mem_info)) + ABORT("Weird VirtualQuery result"); + free_len = (len < mem_info.RegionSize) ? len : mem_info.RegionSize; + if (!VirtualFree(start_addr, free_len, MEM_DECOMMIT)) + ABORT("VirtualFree failed"); + GC_unmapped_bytes += free_len; + start_addr += free_len; + len -= free_len; + } +# else + if (len != 0) { + /* Immediately remap as above. */ +# ifdef CYGWIN32 + if (mprotect(start_addr, len, PROT_NONE)) + ABORT("mprotect(PROT_NONE) failed"); +# else + void * result = mmap(start_addr, len, PROT_NONE, + MAP_PRIVATE | MAP_FIXED | OPT_MAP_ANON, + zero_fd, 0/* offset */); + + if (result != (void *)start_addr) + ABORT("mmap(PROT_NONE) failed"); +# if defined(CPPCHECK) || defined(LINT2) + GC_noop1((word)result); +# endif +# endif /* !CYGWIN32 */ + GC_unmapped_bytes += len; + } +# endif +} + +#endif /* USE_MUNMAP */ + +/* Routine for pushing any additional roots. In THREADS */ +/* environment, this is also responsible for marking from */ +/* thread stacks. */ +#ifndef THREADS + GC_push_other_roots_proc GC_push_other_roots = 0; +#else /* THREADS */ + +# ifdef PCR +PCR_ERes GC_push_thread_stack(PCR_Th_T *t, PCR_Any dummy) +{ + struct PCR_ThCtl_TInfoRep info; + PCR_ERes result; + + info.ti_stkLow = info.ti_stkHi = 0; + result = PCR_ThCtl_GetInfo(t, &info); + GC_push_all_stack((ptr_t)(info.ti_stkLow), (ptr_t)(info.ti_stkHi)); + return(result); +} + +/* Push the contents of an old object. We treat this as stack */ +/* data only because that makes it robust against mark stack */ +/* overflow. */ +PCR_ERes GC_push_old_obj(void *p, size_t size, PCR_Any data) +{ + GC_push_all_stack((ptr_t)p, (ptr_t)p + size); + return(PCR_ERes_okay); +} + +extern struct PCR_MM_ProcsRep * GC_old_allocator; + /* defined in pcr_interface.c. */ + +STATIC void GC_CALLBACK GC_default_push_other_roots(void) +{ + /* Traverse data allocated by previous memory managers. */ + if ((*(GC_old_allocator->mmp_enumerate))(PCR_Bool_false, + GC_push_old_obj, 0) + != PCR_ERes_okay) { + ABORT("Old object enumeration failed"); + } + /* Traverse all thread stacks. */ + if (PCR_ERes_IsErr( + PCR_ThCtl_ApplyToAllOtherThreads(GC_push_thread_stack,0)) + || PCR_ERes_IsErr(GC_push_thread_stack(PCR_Th_CurrThread(), 0))) { + ABORT("Thread stack marking failed"); + } +} + +# endif /* PCR */ + +# if defined(GC_PTHREADS) || defined(GC_WIN32_THREADS) + STATIC void GC_CALLBACK GC_default_push_other_roots(void) + { + GC_push_all_stacks(); + } +# endif /* GC_WIN32_THREADS || GC_PTHREADS */ + +# ifdef SN_TARGET_PS3 + STATIC void GC_CALLBACK GC_default_push_other_roots(void) + { + ABORT("GC_default_push_other_roots is not implemented"); + } + + void GC_push_thread_structures(void) + { + ABORT("GC_push_thread_structures is not implemented"); + } +# endif /* SN_TARGET_PS3 */ + + GC_push_other_roots_proc GC_push_other_roots = GC_default_push_other_roots; +#endif /* THREADS */ + +GC_API void GC_CALL GC_set_push_other_roots(GC_push_other_roots_proc fn) +{ + GC_push_other_roots = fn; +} + +GC_API GC_push_other_roots_proc GC_CALL GC_get_push_other_roots(void) +{ + return GC_push_other_roots; +} + +/* + * Routines for accessing dirty bits on virtual pages. + * There are six ways to maintain this information: + * DEFAULT_VDB: A simple dummy implementation that treats every page + * as possibly dirty. This makes incremental collection + * useless, but the implementation is still correct. + * MANUAL_VDB: Stacks and static data are always considered dirty. + * Heap pages are considered dirty if GC_dirty(p) has been + * called on some pointer p pointing to somewhere inside + * an object on that page. A GC_dirty() call on a large + * object directly dirties only a single page, but for + * MANUAL_VDB we are careful to treat an object with a dirty + * page as completely dirty. + * In order to avoid races, an object must be marked dirty + * after it is written, and a reference to the object + * must be kept on a stack or in a register in the interim. + * With threads enabled, an object directly reachable from the + * stack at the time of a collection is treated as dirty. + * In single-threaded mode, it suffices to ensure that no + * collection can take place between the pointer assignment + * and the GC_dirty() call. + * PCR_VDB: Use PPCRs virtual dirty bit facility. + * PROC_VDB: Use the /proc facility for reading dirty bits. Only + * works under some SVR4 variants. Even then, it may be + * too slow to be entirely satisfactory. Requires reading + * dirty bits for entire address space. Implementations tend + * to assume that the client is a (slow) debugger. + * MPROTECT_VDB:Protect pages and then catch the faults to keep track of + * dirtied pages. The implementation (and implementability) + * is highly system dependent. This usually fails when system + * calls write to a protected page. We prevent the read system + * call from doing so. It is the clients responsibility to + * make sure that other system calls are similarly protected + * or write only to the stack. + * GWW_VDB: Use the Win32 GetWriteWatch functions, if available, to + * read dirty bits. In case it is not available (because we + * are running on Windows 95, Windows 2000 or earlier), + * MPROTECT_VDB may be defined as a fallback strategy. + */ + +#if defined(GWW_VDB) || defined(MPROTECT_VDB) || defined(PROC_VDB) \ + || defined(MANUAL_VDB) + /* Is the HBLKSIZE sized page at h marked dirty in the local buffer? */ + /* If the actual page size is different, this returns TRUE if any */ + /* of the pages overlapping h are dirty. This routine may err on the */ + /* side of labeling pages as dirty (and this implementation does). */ + GC_INNER GC_bool GC_page_was_dirty(struct hblk * h) + { + register word index; + + if (HDR(h) == 0) + return TRUE; + index = PHT_HASH(h); + return get_pht_entry_from_index(GC_grungy_pages, index); + } +#endif + +#if (defined(CHECKSUMS) && defined(GWW_VDB)) || defined(PROC_VDB) + /* Add all pages in pht2 to pht1. */ + STATIC void GC_or_pages(page_hash_table pht1, page_hash_table pht2) + { + register unsigned i; + for (i = 0; i < PHT_SIZE; i++) pht1[i] |= pht2[i]; + } + + /* Used only if GWW_VDB. */ +# ifdef MPROTECT_VDB + STATIC GC_bool GC_gww_page_was_ever_dirty(struct hblk * h) +# else + GC_INNER GC_bool GC_page_was_ever_dirty(struct hblk * h) +# endif + { + register word index; + if (HDR(h) == 0) + return TRUE; + index = PHT_HASH(h); + return get_pht_entry_from_index(GC_written_pages, index); + } +#endif /* CHECKSUMS && GWW_VDB || PROC_VDB */ + +#if ((defined(GWW_VDB) || defined(PROC_VDB)) && !defined(MPROTECT_VDB)) \ + || defined(MANUAL_VDB) || defined(DEFAULT_VDB) + /* Ignore write hints. They don't help us here. */ + GC_INNER void GC_remove_protection(struct hblk * h GC_ATTR_UNUSED, + word nblocks GC_ATTR_UNUSED, + GC_bool is_ptrfree GC_ATTR_UNUSED) {} +#endif + +#ifdef GWW_VDB + +# define GC_GWW_BUF_LEN (MAXHINCR * HBLKSIZE / 4096 /* X86 page size */) + /* Still susceptible to overflow, if there are very large allocations, */ + /* and everything is dirty. */ + static PVOID gww_buf[GC_GWW_BUF_LEN]; + +# ifndef MPROTECT_VDB +# define GC_gww_dirty_init GC_dirty_init +# endif + + GC_INNER GC_bool GC_gww_dirty_init(void) + { + detect_GetWriteWatch(); + return GC_GWW_AVAILABLE(); + } + +# ifdef MPROTECT_VDB + STATIC void GC_gww_read_dirty(void) +# else + GC_INNER void GC_read_dirty(void) +# endif + { + word i; + + BZERO(GC_grungy_pages, sizeof(GC_grungy_pages)); + + for (i = 0; i != GC_n_heap_sects; ++i) { + GC_ULONG_PTR count; + + do { + PVOID * pages = gww_buf; + DWORD page_size; + + count = GC_GWW_BUF_LEN; + /* GetWriteWatch is documented as returning non-zero when it */ + /* fails, but the documentation doesn't explicitly say why it */ + /* would fail or what its behaviour will be if it fails. */ + /* It does appear to fail, at least on recent W2K instances, if */ + /* the underlying memory was not allocated with the appropriate */ + /* flag. This is common if GC_enable_incremental is called */ + /* shortly after GC initialization. To avoid modifying the */ + /* interface, we silently work around such a failure, it only */ + /* affects the initial (small) heap allocation. If there are */ + /* more dirty pages than will fit in the buffer, this is not */ + /* treated as a failure; we must check the page count in the */ + /* loop condition. Since each partial call will reset the */ + /* status of some pages, this should eventually terminate even */ + /* in the overflow case. */ + if (GetWriteWatch_func(WRITE_WATCH_FLAG_RESET, + GC_heap_sects[i].hs_start, + GC_heap_sects[i].hs_bytes, + pages, + &count, + &page_size) != 0) { + static int warn_count = 0; + unsigned j; + struct hblk * start = (struct hblk *)GC_heap_sects[i].hs_start; + static struct hblk *last_warned = 0; + size_t nblocks = divHBLKSZ(GC_heap_sects[i].hs_bytes); + + if ( i != 0 && last_warned != start && warn_count++ < 5) { + last_warned = start; + WARN( + "GC_gww_read_dirty unexpectedly failed at %p: " + "Falling back to marking all pages dirty\n", start); + } + for (j = 0; j < nblocks; ++j) { + word hash = PHT_HASH(start + j); + set_pht_entry_from_index(GC_grungy_pages, hash); + } + count = 1; /* Done with this section. */ + } else /* succeeded */ { + PVOID * pages_end = pages + count; + + while (pages != pages_end) { + struct hblk * h = (struct hblk *) *pages++; + struct hblk * h_end = (struct hblk *) ((char *) h + page_size); + do { + set_pht_entry_from_index(GC_grungy_pages, PHT_HASH(h)); + } while ((word)(++h) < (word)h_end); + } + } + } while (count == GC_GWW_BUF_LEN); + /* FIXME: It's unclear from Microsoft's documentation if this loop */ + /* is useful. We suspect the call just fails if the buffer fills */ + /* up. But that should still be handled correctly. */ + } + +# ifdef CHECKSUMS + GC_or_pages(GC_written_pages, GC_grungy_pages); +# endif + } +#endif /* GWW_VDB */ + +#ifdef DEFAULT_VDB + /* All of the following assume the allocation lock is held. */ + + /* The client asserts that unallocated pages in the heap are never */ + /* written. */ + + /* Initialize virtual dirty bit implementation. */ + GC_INNER GC_bool GC_dirty_init(void) + { + GC_VERBOSE_LOG_PRINTF("Initializing DEFAULT_VDB...\n"); + return TRUE; + } + + /* Retrieve system dirty bits for heap to a local buffer. */ + /* Restore the systems notion of which pages are dirty. */ + GC_INNER void GC_read_dirty(void) {} + + /* Is the HBLKSIZE sized page at h marked dirty in the local buffer? */ + /* If the actual page size is different, this returns TRUE if any */ + /* of the pages overlapping h are dirty. This routine may err on the */ + /* side of labeling pages as dirty (and this implementation does). */ + GC_INNER GC_bool GC_page_was_dirty(struct hblk * h GC_ATTR_UNUSED) + { + return(TRUE); + } + + /* The following two routines are typically less crucial. */ + /* They matter most with large dynamic libraries, or if we can't */ + /* accurately identify stacks, e.g. under Solaris 2.X. Otherwise the */ + /* following default versions are adequate. */ +# ifdef CHECKSUMS + /* Could any valid GC heap pointer ever have been written to this page? */ + GC_INNER GC_bool GC_page_was_ever_dirty(struct hblk * h GC_ATTR_UNUSED) + { + return(TRUE); + } +# endif /* CHECKSUMS */ + +#endif /* DEFAULT_VDB */ + +#ifdef MANUAL_VDB + /* Initialize virtual dirty bit implementation. */ + GC_INNER GC_bool GC_dirty_init(void) + { + GC_VERBOSE_LOG_PRINTF("Initializing MANUAL_VDB...\n"); + /* GC_dirty_pages and GC_grungy_pages are already cleared. */ + return TRUE; + } + + /* Retrieve system dirty bits for heap to a local buffer. */ + /* Restore the systems notion of which pages are dirty. */ + GC_INNER void GC_read_dirty(void) + { + BCOPY((word *)GC_dirty_pages, GC_grungy_pages, + (sizeof GC_dirty_pages)); + BZERO((word *)GC_dirty_pages, (sizeof GC_dirty_pages)); + } + +# define async_set_pht_entry_from_index(db, index) \ + set_pht_entry_from_index(db, index) /* for now */ + + /* Mark the page containing p as dirty. Logically, this dirties the */ + /* entire object. */ + void GC_dirty(ptr_t p) + { + word index = PHT_HASH(p); + async_set_pht_entry_from_index(GC_dirty_pages, index); + } + +# ifdef CHECKSUMS + /* Could any valid GC heap pointer ever have been written to this page? */ + GC_INNER GC_bool GC_page_was_ever_dirty(struct hblk * h GC_ATTR_UNUSED) + { + /* FIXME - implement me. */ + return(TRUE); + } +# endif /* CHECKSUMS */ + +#endif /* MANUAL_VDB */ + +#ifdef MPROTECT_VDB + /* See DEFAULT_VDB for interface descriptions. */ + + /* + * This implementation maintains dirty bits itself by catching write + * faults and keeping track of them. We assume nobody else catches + * SIGBUS or SIGSEGV. We assume no write faults occur in system calls. + * This means that clients must ensure that system calls don't write + * to the write-protected heap. Probably the best way to do this is to + * ensure that system calls write at most to pointer-free objects in the + * heap, and do even that only if we are on a platform on which those + * are not protected. Another alternative is to wrap system calls + * (see example for read below), but the current implementation holds + * applications. + * We assume the page size is a multiple of HBLKSIZE. + * We prefer them to be the same. We avoid protecting pointer-free + * objects only if they are the same. + */ +# ifdef DARWIN + /* Using vm_protect (mach syscall) over mprotect (BSD syscall) seems to + decrease the likelihood of some of the problems described below. */ +# include + STATIC mach_port_t GC_task_self = 0; +# define PROTECT(addr,len) \ + if (vm_protect(GC_task_self, (vm_address_t)(addr), (vm_size_t)(len), \ + FALSE, VM_PROT_READ \ + | (GC_pages_executable ? VM_PROT_EXECUTE : 0)) \ + == KERN_SUCCESS) {} else ABORT("vm_protect(PROTECT) failed") +# define UNPROTECT(addr,len) \ + if (vm_protect(GC_task_self, (vm_address_t)(addr), (vm_size_t)(len), \ + FALSE, (VM_PROT_READ | VM_PROT_WRITE) \ + | (GC_pages_executable ? VM_PROT_EXECUTE : 0)) \ + == KERN_SUCCESS) {} else ABORT("vm_protect(UNPROTECT) failed") + +# elif !defined(USE_WINALLOC) +# include +# include +# include + +# define PROTECT(addr, len) \ + if (mprotect((caddr_t)(addr), (size_t)(len), \ + PROT_READ \ + | (GC_pages_executable ? PROT_EXEC : 0)) >= 0) { \ + } else ABORT("mprotect failed") +# define UNPROTECT(addr, len) \ + if (mprotect((caddr_t)(addr), (size_t)(len), \ + (PROT_READ | PROT_WRITE) \ + | (GC_pages_executable ? PROT_EXEC : 0)) >= 0) { \ + } else ABORT(GC_pages_executable ? \ + "un-mprotect executable page failed" \ + " (probably disabled by OS)" : \ + "un-mprotect failed") +# undef IGNORE_PAGES_EXECUTABLE + +# else /* USE_WINALLOC */ +# ifndef MSWINCE +# include +# endif + + static DWORD protect_junk; +# define PROTECT(addr, len) \ + if (VirtualProtect((addr), (len), \ + GC_pages_executable ? PAGE_EXECUTE_READ : \ + PAGE_READONLY, \ + &protect_junk)) { \ + } else ABORT_ARG1("VirtualProtect failed", \ + ": errcode= 0x%X", (unsigned)GetLastError()) +# define UNPROTECT(addr, len) \ + if (VirtualProtect((addr), (len), \ + GC_pages_executable ? PAGE_EXECUTE_READWRITE : \ + PAGE_READWRITE, \ + &protect_junk)) { \ + } else ABORT("un-VirtualProtect failed") +# endif /* USE_WINALLOC */ + +# if defined(MSWIN32) + typedef LPTOP_LEVEL_EXCEPTION_FILTER SIG_HNDLR_PTR; +# undef SIG_DFL +# define SIG_DFL (LPTOP_LEVEL_EXCEPTION_FILTER)((signed_word)-1) +# elif defined(MSWINCE) + typedef LONG (WINAPI *SIG_HNDLR_PTR)(struct _EXCEPTION_POINTERS *); +# undef SIG_DFL +# define SIG_DFL (SIG_HNDLR_PTR) (-1) +# elif defined(DARWIN) + typedef void (* SIG_HNDLR_PTR)(); +# else + typedef void (* SIG_HNDLR_PTR)(int, siginfo_t *, void *); + typedef void (* PLAIN_HNDLR_PTR)(int); +# endif + +# if defined(__GLIBC__) +# if __GLIBC__ < 2 || __GLIBC__ == 2 && __GLIBC_MINOR__ < 2 +# error glibc too old? +# endif +# endif + +#ifndef DARWIN + STATIC SIG_HNDLR_PTR GC_old_segv_handler = 0; + /* Also old MSWIN32 ACCESS_VIOLATION filter */ +# if !defined(MSWIN32) && !defined(MSWINCE) + STATIC SIG_HNDLR_PTR GC_old_bus_handler = 0; +# if defined(FREEBSD) || defined(HURD) || defined(HPUX) + STATIC GC_bool GC_old_bus_handler_used_si = FALSE; +# endif + STATIC GC_bool GC_old_segv_handler_used_si = FALSE; +# endif /* !MSWIN32 */ +#endif /* !DARWIN */ + +#if defined(THREADS) +/* We need to lock around the bitmap update in the write fault handler */ +/* in order to avoid the risk of losing a bit. We do this with a */ +/* test-and-set spin lock if we know how to do that. Otherwise we */ +/* check whether we are already in the handler and use the dumb but */ +/* safe fallback algorithm of setting all bits in the word. */ +/* Contention should be very rare, so we do the minimum to handle it */ +/* correctly. */ +#ifdef AO_HAVE_test_and_set_acquire + GC_INNER volatile AO_TS_t GC_fault_handler_lock = AO_TS_INITIALIZER; + static void async_set_pht_entry_from_index(volatile page_hash_table db, + size_t index) + { + while (AO_test_and_set_acquire(&GC_fault_handler_lock) == AO_TS_SET) { + /* empty */ + } + /* Could also revert to set_pht_entry_from_index_safe if initial */ + /* GC_test_and_set fails. */ + set_pht_entry_from_index(db, index); + AO_CLEAR(&GC_fault_handler_lock); + } +#else /* !AO_HAVE_test_and_set_acquire */ +# error No test_and_set operation: Introduces a race. + /* THIS WOULD BE INCORRECT! */ + /* The dirty bit vector may be temporarily wrong, */ + /* just before we notice the conflict and correct it. We may end up */ + /* looking at it while it's wrong. But this requires contention */ + /* exactly when a GC is triggered, which seems far less likely to */ + /* fail than the old code, which had no reported failures. Thus we */ + /* leave it this way while we think of something better, or support */ + /* GC_test_and_set on the remaining platforms. */ + static int * volatile currently_updating = 0; + static void async_set_pht_entry_from_index(volatile page_hash_table db, + size_t index) + { + int update_dummy; + currently_updating = &update_dummy; + set_pht_entry_from_index(db, index); + /* If we get contention in the 10 or so instruction window here, */ + /* and we get stopped by a GC between the two updates, we lose! */ + if (currently_updating != &update_dummy) { + set_pht_entry_from_index_safe(db, index); + /* We claim that if two threads concurrently try to update the */ + /* dirty bit vector, the first one to execute UPDATE_START */ + /* will see it changed when UPDATE_END is executed. (Note that */ + /* &update_dummy must differ in two distinct threads.) It */ + /* will then execute set_pht_entry_from_index_safe, thus */ + /* returning us to a safe state, though not soon enough. */ + } + } +#endif /* !AO_HAVE_test_and_set_acquire */ +#else /* !THREADS */ +# define async_set_pht_entry_from_index(db, index) \ + set_pht_entry_from_index(db, index) +#endif /* !THREADS */ + +#ifndef DARWIN + +# ifdef CHECKSUMS + void GC_record_fault(struct hblk * h); /* from checksums.c */ +# endif + +# if !defined(MSWIN32) && !defined(MSWINCE) +# include +# if defined(FREEBSD) || defined(HURD) || defined(HPUX) +# define SIG_OK (sig == SIGBUS || sig == SIGSEGV) +# else +# define SIG_OK (sig == SIGSEGV) + /* Catch SIGSEGV but ignore SIGBUS. */ +# endif +# if defined(FREEBSD) +# ifndef SEGV_ACCERR +# define SEGV_ACCERR 2 +# endif +# if defined(AARCH64) || defined(ARM32) || defined(MIPS) +# define CODE_OK (si -> si_code == SEGV_ACCERR) +# elif defined(POWERPC) +# define AIM /* Pretend that we're AIM. */ +# include +# define CODE_OK (si -> si_code == EXC_DSI \ + || si -> si_code == SEGV_ACCERR) +# else +# define CODE_OK (si -> si_code == BUS_PAGE_FAULT \ + || si -> si_code == SEGV_ACCERR) +# endif +# elif defined(OSF1) +# define CODE_OK (si -> si_code == 2 /* experimentally determined */) +# elif defined(IRIX5) +# define CODE_OK (si -> si_code == EACCES) +# elif defined(HURD) +# define CODE_OK TRUE +# elif defined(LINUX) +# define CODE_OK TRUE + /* Empirically c.trapno == 14, on IA32, but is that useful? */ + /* Should probably consider alignment issues on other */ + /* architectures. */ +# elif defined(HPUX) +# define CODE_OK (si -> si_code == SEGV_ACCERR \ + || si -> si_code == BUS_ADRERR \ + || si -> si_code == BUS_UNKNOWN \ + || si -> si_code == SEGV_UNKNOWN \ + || si -> si_code == BUS_OBJERR) +# elif defined(SUNOS5SIGS) +# define CODE_OK (si -> si_code == SEGV_ACCERR) +# endif +# ifndef NO_GETCONTEXT +# include +# endif + STATIC void GC_write_fault_handler(int sig, siginfo_t *si, void *raw_sc) +# else +# define SIG_OK (exc_info -> ExceptionRecord -> ExceptionCode \ + == STATUS_ACCESS_VIOLATION) +# define CODE_OK (exc_info -> ExceptionRecord -> ExceptionInformation[0] \ + == 1) /* Write fault */ + STATIC LONG WINAPI GC_write_fault_handler( + struct _EXCEPTION_POINTERS *exc_info) +# endif /* MSWIN32 || MSWINCE */ + { +# if !defined(MSWIN32) && !defined(MSWINCE) + char *addr = si -> si_addr; +# else + char * addr = (char *) (exc_info -> ExceptionRecord + -> ExceptionInformation[1]); +# endif + + if (SIG_OK && CODE_OK) { + register struct hblk * h = + (struct hblk *)((word)addr & ~(GC_page_size-1)); + GC_bool in_allocd_block; + size_t i; + +# ifdef CHECKSUMS + GC_record_fault(h); +# endif +# ifdef SUNOS5SIGS + /* Address is only within the correct physical page. */ + in_allocd_block = FALSE; + for (i = 0; i < divHBLKSZ(GC_page_size); i++) { + if (HDR(h+i) != 0) { + in_allocd_block = TRUE; + break; + } + } +# else + in_allocd_block = (HDR(addr) != 0); +# endif + if (!in_allocd_block) { + /* FIXME - We should make sure that we invoke the */ + /* old handler with the appropriate calling */ + /* sequence, which often depends on SA_SIGINFO. */ + + /* Heap blocks now begin and end on page boundaries */ + SIG_HNDLR_PTR old_handler; + +# if defined(MSWIN32) || defined(MSWINCE) + old_handler = GC_old_segv_handler; +# else + GC_bool used_si; + +# if defined(FREEBSD) || defined(HURD) || defined(HPUX) + if (sig == SIGBUS) { + old_handler = GC_old_bus_handler; + used_si = GC_old_bus_handler_used_si; + } else +# endif + /* else */ { + old_handler = GC_old_segv_handler; + used_si = GC_old_segv_handler_used_si; + } +# endif + + if (old_handler == (SIG_HNDLR_PTR)SIG_DFL) { +# if !defined(MSWIN32) && !defined(MSWINCE) + ABORT_ARG1("Unexpected bus error or segmentation fault", + " at %p", (void *)addr); +# else + return(EXCEPTION_CONTINUE_SEARCH); +# endif + } else { + /* + * FIXME: This code should probably check if the + * old signal handler used the traditional style and + * if so call it using that style. + */ +# if defined(MSWIN32) || defined(MSWINCE) + return((*old_handler)(exc_info)); +# else + if (used_si) + ((SIG_HNDLR_PTR)old_handler) (sig, si, raw_sc); + else + /* FIXME: should pass nonstandard args as well. */ + ((PLAIN_HNDLR_PTR)old_handler) (sig); + return; +# endif + } + } + UNPROTECT(h, GC_page_size); + /* We need to make sure that no collection occurs between */ + /* the UNPROTECT and the setting of the dirty bit. Otherwise */ + /* a write by a third thread might go unnoticed. Reversing */ + /* the order is just as bad, since we would end up unprotecting */ + /* a page in a GC cycle during which it's not marked. */ + /* Currently we do this by disabling the thread stopping */ + /* signals while this handler is running. An alternative might */ + /* be to record the fact that we're about to unprotect, or */ + /* have just unprotected a page in the GC's thread structure, */ + /* and then to have the thread stopping code set the dirty */ + /* flag, if necessary. */ + for (i = 0; i < divHBLKSZ(GC_page_size); i++) { + size_t index = PHT_HASH(h+i); + + async_set_pht_entry_from_index(GC_dirty_pages, index); + } + /* The write may not take place before dirty bits are read. */ + /* But then we'll fault again ... */ +# if defined(MSWIN32) || defined(MSWINCE) + return(EXCEPTION_CONTINUE_EXECUTION); +# else + return; +# endif + } +# if defined(MSWIN32) || defined(MSWINCE) + return EXCEPTION_CONTINUE_SEARCH; +# else + ABORT_ARG1("Unexpected bus error or segmentation fault", + " at %p", (void *)addr); +# endif + } + +# ifdef GC_WIN32_THREADS + GC_INNER void GC_set_write_fault_handler(void) + { + SetUnhandledExceptionFilter(GC_write_fault_handler); + } +# endif +#endif /* !DARWIN */ + +/* We hold the allocation lock. We expect block h to be written */ +/* shortly. Ensure that all pages containing any part of the n hblks */ +/* starting at h are no longer protected. If is_ptrfree is false, also */ +/* ensure that they will subsequently appear to be dirty. Not allowed */ +/* to call GC_printf (and the friends) here, see Win32 GC_stop_world() */ +/* for the information. */ +GC_INNER void GC_remove_protection(struct hblk *h, word nblocks, + GC_bool is_ptrfree) +{ + struct hblk * h_trunc; /* Truncated to page boundary */ + struct hblk * h_end; /* Page boundary following block end */ + struct hblk * current; + +# if defined(GWW_VDB) + if (GC_GWW_AVAILABLE()) return; +# endif + if (!GC_incremental) return; + h_trunc = (struct hblk *)((word)h & ~(GC_page_size-1)); + h_end = (struct hblk *)(((word)(h + nblocks) + GC_page_size - 1) + & ~(GC_page_size - 1)); + if (h_end == h_trunc + 1 && + get_pht_entry_from_index(GC_dirty_pages, PHT_HASH(h_trunc))) { + /* already marked dirty, and hence unprotected. */ + return; + } + for (current = h_trunc; (word)current < (word)h_end; ++current) { + size_t index = PHT_HASH(current); + if (!is_ptrfree || (word)current < (word)h + || (word)current >= (word)(h + nblocks)) { + async_set_pht_entry_from_index(GC_dirty_pages, index); + } + } + UNPROTECT(h_trunc, (ptr_t)h_end - (ptr_t)h_trunc); +} + +#if !defined(DARWIN) + GC_INNER GC_bool GC_dirty_init(void) + { +# if !defined(MSWIN32) && !defined(MSWINCE) + struct sigaction act, oldact; + act.sa_flags = SA_RESTART | SA_SIGINFO; + act.sa_sigaction = GC_write_fault_handler; + (void)sigemptyset(&act.sa_mask); +# if defined(THREADS) && !defined(GC_OPENBSD_UTHREADS) \ + && !defined(GC_WIN32_THREADS) && !defined(NACL) + /* Arrange to postpone the signal while we are in a write fault */ + /* handler. This effectively makes the handler atomic w.r.t. */ + /* stopping the world for GC. */ + (void)sigaddset(&act.sa_mask, GC_get_suspend_signal()); +# endif +# endif /* !MSWIN32 */ + GC_VERBOSE_LOG_PRINTF( + "Initializing mprotect virtual dirty bit implementation\n"); + if (GC_page_size % HBLKSIZE != 0) { + ABORT("Page size not multiple of HBLKSIZE"); + } +# if !defined(MSWIN32) && !defined(MSWINCE) + /* act.sa_restorer is deprecated and should not be initialized. */ +# if defined(GC_IRIX_THREADS) + sigaction(SIGSEGV, 0, &oldact); + sigaction(SIGSEGV, &act, 0); +# else + { + int res = sigaction(SIGSEGV, &act, &oldact); + if (res != 0) ABORT("Sigaction failed"); + } +# endif + if (oldact.sa_flags & SA_SIGINFO) { + GC_old_segv_handler = oldact.sa_sigaction; + GC_old_segv_handler_used_si = TRUE; + } else { + GC_old_segv_handler = (SIG_HNDLR_PTR)oldact.sa_handler; + GC_old_segv_handler_used_si = FALSE; + } + if (GC_old_segv_handler == (SIG_HNDLR_PTR)SIG_IGN) { + WARN("Previously ignored segmentation violation!?\n", 0); + GC_old_segv_handler = (SIG_HNDLR_PTR)SIG_DFL; + } + if (GC_old_segv_handler != (SIG_HNDLR_PTR)SIG_DFL) { + GC_VERBOSE_LOG_PRINTF("Replaced other SIGSEGV handler\n"); + } +# if defined(HPUX) || defined(LINUX) || defined(HURD) \ + || (defined(FREEBSD) && defined(SUNOS5SIGS)) + sigaction(SIGBUS, &act, &oldact); + if ((oldact.sa_flags & SA_SIGINFO) != 0) { + GC_old_bus_handler = oldact.sa_sigaction; +# if !defined(LINUX) + GC_old_bus_handler_used_si = TRUE; +# endif + } else { + GC_old_bus_handler = (SIG_HNDLR_PTR)oldact.sa_handler; +# if !defined(LINUX) + GC_old_bus_handler_used_si = FALSE; +# endif + } + if (GC_old_bus_handler == (SIG_HNDLR_PTR)SIG_IGN) { + WARN("Previously ignored bus error!?\n", 0); +# if !defined(LINUX) + GC_old_bus_handler = (SIG_HNDLR_PTR)SIG_DFL; +# else + /* GC_old_bus_handler is not used by GC_write_fault_handler. */ +# endif + } else if (GC_old_bus_handler != (SIG_HNDLR_PTR)SIG_DFL) { + GC_VERBOSE_LOG_PRINTF("Replaced other SIGBUS handler\n"); + } +# endif /* HPUX || LINUX || HURD || (FREEBSD && SUNOS5SIGS) */ +# endif /* ! MS windows */ +# if defined(GWW_VDB) + if (GC_gww_dirty_init()) + return TRUE; +# endif +# if defined(MSWIN32) + GC_old_segv_handler = SetUnhandledExceptionFilter(GC_write_fault_handler); + if (GC_old_segv_handler != NULL) { + GC_COND_LOG_PRINTF("Replaced other UnhandledExceptionFilter\n"); + } else { + GC_old_segv_handler = SIG_DFL; + } +# elif defined(MSWINCE) + /* MPROTECT_VDB is unsupported for WinCE at present. */ + /* FIXME: implement it (if possible). */ +# endif +# if defined(CPPCHECK) && defined(ADDRESS_SANITIZER) + GC_noop1((word)&__asan_default_options); +# endif + return TRUE; + } +#endif /* !DARWIN */ + +GC_API int GC_CALL GC_incremental_protection_needs(void) +{ + GC_ASSERT(GC_is_initialized); + + if (GC_page_size == HBLKSIZE) { + return GC_PROTECTS_POINTER_HEAP; + } else { + return GC_PROTECTS_POINTER_HEAP | GC_PROTECTS_PTRFREE_HEAP; + } +} +#define HAVE_INCREMENTAL_PROTECTION_NEEDS + +#define IS_PTRFREE(hhdr) ((hhdr)->hb_descr == 0) +#define PAGE_ALIGNED(x) !((word)(x) & (GC_page_size - 1)) + +STATIC void GC_protect_heap(void) +{ + unsigned i; + GC_bool protect_all = + (0 != (GC_incremental_protection_needs() & GC_PROTECTS_PTRFREE_HEAP)); + + for (i = 0; i < GC_n_heap_sects; i++) { + ptr_t start = GC_heap_sects[i].hs_start; + size_t len = GC_heap_sects[i].hs_bytes; + + if (protect_all) { + PROTECT(start, len); + } else { + struct hblk * current; + struct hblk * current_start; /* Start of block to be protected. */ + struct hblk * limit; + + GC_ASSERT(PAGE_ALIGNED(len)); + GC_ASSERT(PAGE_ALIGNED(start)); + current_start = current = (struct hblk *)start; + limit = (struct hblk *)(start + len); + while ((word)current < (word)limit) { + hdr * hhdr; + word nhblks; + GC_bool is_ptrfree; + + GC_ASSERT(PAGE_ALIGNED(current)); + GET_HDR(current, hhdr); + if (IS_FORWARDING_ADDR_OR_NIL(hhdr)) { + /* This can happen only if we're at the beginning of a */ + /* heap segment, and a block spans heap segments. */ + /* We will handle that block as part of the preceding */ + /* segment. */ + GC_ASSERT(current_start == current); + current_start = ++current; + continue; + } + if (HBLK_IS_FREE(hhdr)) { + GC_ASSERT(PAGE_ALIGNED(hhdr -> hb_sz)); + nhblks = divHBLKSZ(hhdr -> hb_sz); + is_ptrfree = TRUE; /* dirty on alloc */ + } else { + nhblks = OBJ_SZ_TO_BLOCKS(hhdr -> hb_sz); + is_ptrfree = IS_PTRFREE(hhdr); + } + if (is_ptrfree) { + if ((word)current_start < (word)current) { + PROTECT(current_start, (ptr_t)current - (ptr_t)current_start); + } + current_start = (current += nhblks); + } else { + current += nhblks; + } + } + if ((word)current_start < (word)current) { + PROTECT(current_start, (ptr_t)current - (ptr_t)current_start); + } + } + } +} + +/* We assume that either the world is stopped or its OK to lose dirty */ +/* bits while this is happening (as in GC_enable_incremental). */ +GC_INNER void GC_read_dirty(void) +{ +# if defined(GWW_VDB) + if (GC_GWW_AVAILABLE()) { + GC_gww_read_dirty(); + return; + } +# endif + BCOPY((word *)GC_dirty_pages, GC_grungy_pages, + (sizeof GC_dirty_pages)); + BZERO((word *)GC_dirty_pages, (sizeof GC_dirty_pages)); + GC_protect_heap(); +} + +/* + * Acquiring the allocation lock here is dangerous, since this + * can be called from within GC_call_with_alloc_lock, and the cord + * package does so. On systems that allow nested lock acquisition, this + * happens to work. + */ + +/* We no longer wrap read by default, since that was causing too many */ +/* problems. It is preferred that the client instead avoids writing */ +/* to the write-protected heap with a system call. */ + +# ifdef CHECKSUMS + GC_INNER GC_bool GC_page_was_ever_dirty(struct hblk * h GC_ATTR_UNUSED) + { +# if defined(GWW_VDB) + if (GC_GWW_AVAILABLE()) + return GC_gww_page_was_ever_dirty(h); +# endif + return(TRUE); + } +# endif /* CHECKSUMS */ + +#endif /* MPROTECT_VDB */ + +#ifdef PROC_VDB +/* See DEFAULT_VDB for interface descriptions. */ + +/* This implementation assumes a Solaris 2.X like /proc */ +/* pseudo-file-system from which we can read page modified bits. This */ +/* facility is far from optimal (e.g. we would like to get the info for */ +/* only some of the address space), but it avoids intercepting system */ +/* calls. */ + +# include +# include +# include +# include +# include +# include +# include + +# define INITIAL_BUF_SZ 16384 + STATIC size_t GC_proc_buf_size = INITIAL_BUF_SZ; + STATIC char *GC_proc_buf = NULL; + STATIC int GC_proc_fd = 0; + +GC_INNER GC_bool GC_dirty_init(void) +{ + char buf[40]; + + if (GC_bytes_allocd != 0 || GC_bytes_allocd_before_gc != 0) { + memset(GC_written_pages, 0xff, sizeof(page_hash_table)); + GC_VERBOSE_LOG_PRINTF( + "Allocated %lu bytes: all pages may have been written\n", + (unsigned long)(GC_bytes_allocd + GC_bytes_allocd_before_gc)); + } + + (void)snprintf(buf, sizeof(buf), "/proc/%ld/pagedata", (long)getpid()); + buf[sizeof(buf) - 1] = '\0'; + GC_proc_fd = open(buf, O_RDONLY); + if (GC_proc_fd < 0) { + WARN("/proc open failed; cannot enable GC incremental mode\n", 0); + return FALSE; + } + if (syscall(SYS_fcntl, GC_proc_fd, F_SETFD, FD_CLOEXEC) == -1) + WARN("Could not set FD_CLOEXEC for /proc\n", 0); + + GC_proc_buf = GC_scratch_alloc(GC_proc_buf_size); + if (GC_proc_buf == NULL) + ABORT("Insufficient space for /proc read"); + return TRUE; +} + +# define READ read + +GC_INNER void GC_read_dirty(void) +{ + int nmaps; + char * bufp = GC_proc_buf; + int i; + + BZERO(GC_grungy_pages, sizeof(GC_grungy_pages)); + if (READ(GC_proc_fd, bufp, GC_proc_buf_size) <= 0) { + /* Retry with larger buffer. */ + size_t new_size = 2 * GC_proc_buf_size; + char *new_buf; + + WARN("/proc read failed: GC_proc_buf_size = %" WARN_PRIdPTR "\n", + (signed_word)GC_proc_buf_size); + new_buf = GC_scratch_alloc(new_size); + if (new_buf != 0) { + GC_scratch_recycle_no_gww(bufp, GC_proc_buf_size); + GC_proc_buf = bufp = new_buf; + GC_proc_buf_size = new_size; + } + if (READ(GC_proc_fd, bufp, GC_proc_buf_size) <= 0) { + WARN("Insufficient space for /proc read\n", 0); + /* Punt: */ + memset(GC_grungy_pages, 0xff, sizeof (page_hash_table)); + memset(GC_written_pages, 0xff, sizeof(page_hash_table)); + return; + } + } + + /* Copy dirty bits into GC_grungy_pages */ + nmaps = ((struct prpageheader *)bufp) -> pr_nmap; +# ifdef DEBUG_DIRTY_BITS + GC_log_printf("Proc VDB read: pr_nmap= %u, pr_npage= %lu\n", + nmaps, ((struct prpageheader *)bufp)->pr_npage); +# endif + bufp += sizeof(struct prpageheader); + for (i = 0; i < nmaps; i++) { + struct prasmap * map = (struct prasmap *)bufp; + ptr_t vaddr = (ptr_t)(map -> pr_vaddr); + unsigned long npages = map -> pr_npage; + unsigned pagesize = map -> pr_pagesize; + ptr_t limit; + +# ifdef DEBUG_DIRTY_BITS + GC_log_printf( + "pr_vaddr= %p, npage= %lu, mflags= 0x%x, pagesize= 0x%x\n", + (void *)vaddr, npages, map->pr_mflags, pagesize); +# endif + + bufp += sizeof(struct prasmap); + limit = vaddr + pagesize * npages; + for (; (word)vaddr < (word)limit; vaddr += pagesize) { + if ((*bufp++) & PG_MODIFIED) { + register struct hblk * h; + ptr_t next_vaddr = vaddr + pagesize; +# ifdef DEBUG_DIRTY_BITS + GC_log_printf("dirty page at: %p\n", (void *)vaddr); +# endif + for (h = (struct hblk *)vaddr; + (word)h < (word)next_vaddr; h++) { + register word index = PHT_HASH(h); + set_pht_entry_from_index(GC_grungy_pages, index); + } + } + } + bufp = (char *)(((word)bufp + (sizeof(long)-1)) + & ~(word)(sizeof(long)-1)); + } +# ifdef DEBUG_DIRTY_BITS + GC_log_printf("Proc VDB read done\n"); +# endif + + /* Update GC_written_pages. */ + GC_or_pages(GC_written_pages, GC_grungy_pages); +} + +# undef READ +#endif /* PROC_VDB */ + +#ifdef PCR_VDB + +# include "vd/PCR_VD.h" + +# define NPAGES (32*1024) /* 128 MB */ + +PCR_VD_DB GC_grungy_bits[NPAGES]; + +STATIC ptr_t GC_vd_base = NULL; + /* Address corresponding to GC_grungy_bits[0] */ + /* HBLKSIZE aligned. */ + +GC_INNER GC_bool GC_dirty_init(void) +{ + /* For the time being, we assume the heap generally grows up */ + GC_vd_base = GC_heap_sects[0].hs_start; + if (GC_vd_base == 0) { + ABORT("Bad initial heap segment"); + } + if (PCR_VD_Start(HBLKSIZE, GC_vd_base, NPAGES*HBLKSIZE) + != PCR_ERes_okay) { + ABORT("Dirty bit initialization failed"); + } + return TRUE; +} + +GC_INNER void GC_read_dirty(void) +{ + /* lazily enable dirty bits on newly added heap sects */ + { + static int onhs = 0; + int nhs = GC_n_heap_sects; + for(; onhs < nhs; onhs++) { + PCR_VD_WriteProtectEnable( + GC_heap_sects[onhs].hs_start, + GC_heap_sects[onhs].hs_bytes ); + } + } + + if (PCR_VD_Clear(GC_vd_base, NPAGES*HBLKSIZE, GC_grungy_bits) + != PCR_ERes_okay) { + ABORT("Dirty bit read failed"); + } +} + +GC_INNER GC_bool GC_page_was_dirty(struct hblk *h) +{ + if ((word)h < (word)GC_vd_base + || (word)h >= (word)(GC_vd_base + NPAGES*HBLKSIZE)) { + return(TRUE); + } + return(GC_grungy_bits[h - (struct hblk *)GC_vd_base] & PCR_VD_DB_dirtyBit); +} + +GC_INNER void GC_remove_protection(struct hblk *h, word nblocks, + GC_bool is_ptrfree GC_ATTR_UNUSED) +{ + PCR_VD_WriteProtectDisable(h, nblocks*HBLKSIZE); + PCR_VD_WriteProtectEnable(h, nblocks*HBLKSIZE); +} + +#endif /* PCR_VDB */ + +#if defined(MPROTECT_VDB) && defined(DARWIN) +/* The following sources were used as a "reference" for this exception + handling code: + 1. Apple's mach/xnu documentation + 2. Timothy J. Wood's "Mach Exception Handlers 101" post to the + omnigroup's macosx-dev list. + www.omnigroup.com/mailman/archive/macosx-dev/2000-June/014178.html + 3. macosx-nat.c from Apple's GDB source code. +*/ + +/* The bug that caused all this trouble should now be fixed. This should + eventually be removed if all goes well. */ + +/* #define BROKEN_EXCEPTION_HANDLING */ + +#include +#include +#include +#include +#include + +/* These are not defined in any header, although they are documented */ +extern boolean_t +exc_server(mach_msg_header_t *, mach_msg_header_t *); + +extern kern_return_t +exception_raise(mach_port_t, mach_port_t, mach_port_t, exception_type_t, + exception_data_t, mach_msg_type_number_t); + +extern kern_return_t +exception_raise_state(mach_port_t, mach_port_t, mach_port_t, exception_type_t, + exception_data_t, mach_msg_type_number_t, + thread_state_flavor_t*, thread_state_t, + mach_msg_type_number_t, thread_state_t, + mach_msg_type_number_t*); + +extern kern_return_t +exception_raise_state_identity(mach_port_t, mach_port_t, mach_port_t, + exception_type_t, exception_data_t, + mach_msg_type_number_t, thread_state_flavor_t*, + thread_state_t, mach_msg_type_number_t, + thread_state_t, mach_msg_type_number_t*); + +GC_API_OSCALL kern_return_t +catch_exception_raise(mach_port_t exception_port, mach_port_t thread, + mach_port_t task, exception_type_t exception, + exception_data_t code, mach_msg_type_number_t code_count); + +/* These should never be called, but just in case... */ +GC_API_OSCALL kern_return_t +catch_exception_raise_state(mach_port_name_t exception_port GC_ATTR_UNUSED, + int exception GC_ATTR_UNUSED, exception_data_t code GC_ATTR_UNUSED, + mach_msg_type_number_t codeCnt GC_ATTR_UNUSED, int flavor GC_ATTR_UNUSED, + thread_state_t old_state GC_ATTR_UNUSED, int old_stateCnt GC_ATTR_UNUSED, + thread_state_t new_state GC_ATTR_UNUSED, int new_stateCnt GC_ATTR_UNUSED) +{ + ABORT_RET("Unexpected catch_exception_raise_state invocation"); + return(KERN_INVALID_ARGUMENT); +} + +GC_API_OSCALL kern_return_t +catch_exception_raise_state_identity( + mach_port_name_t exception_port GC_ATTR_UNUSED, + mach_port_t thread GC_ATTR_UNUSED, mach_port_t task GC_ATTR_UNUSED, + int exception GC_ATTR_UNUSED, exception_data_t code GC_ATTR_UNUSED, + mach_msg_type_number_t codeCnt GC_ATTR_UNUSED, int flavor GC_ATTR_UNUSED, + thread_state_t old_state GC_ATTR_UNUSED, int old_stateCnt GC_ATTR_UNUSED, + thread_state_t new_state GC_ATTR_UNUSED, int new_stateCnt GC_ATTR_UNUSED) +{ + ABORT_RET("Unexpected catch_exception_raise_state_identity invocation"); + return(KERN_INVALID_ARGUMENT); +} + +#define MAX_EXCEPTION_PORTS 16 + +static struct { + mach_msg_type_number_t count; + exception_mask_t masks[MAX_EXCEPTION_PORTS]; + exception_handler_t ports[MAX_EXCEPTION_PORTS]; + exception_behavior_t behaviors[MAX_EXCEPTION_PORTS]; + thread_state_flavor_t flavors[MAX_EXCEPTION_PORTS]; +} GC_old_exc_ports; + +STATIC struct { + void (*volatile os_callback[3])(void); + mach_port_t exception; +# if defined(THREADS) + mach_port_t reply; +# endif +} GC_ports = { + { + /* This is to prevent stripping these routines as dead. */ + (void (*)(void))catch_exception_raise, + (void (*)(void))catch_exception_raise_state, + (void (*)(void))catch_exception_raise_state_identity + }, +# ifdef THREADS + 0, /* for 'exception' */ +# endif + 0 +}; + +typedef struct { + mach_msg_header_t head; +} GC_msg_t; + +typedef enum { + GC_MP_NORMAL, + GC_MP_DISCARDING, + GC_MP_STOPPED +} GC_mprotect_state_t; + +#ifdef THREADS + /* FIXME: 1 and 2 seem to be safe to use in the msgh_id field, but it */ + /* is not documented. Use the source and see if they should be OK. */ +# define ID_STOP 1 +# define ID_RESUME 2 + + /* This value is only used on the reply port. */ +# define ID_ACK 3 + + STATIC GC_mprotect_state_t GC_mprotect_state = 0; + + /* The following should ONLY be called when the world is stopped. */ + STATIC void GC_mprotect_thread_notify(mach_msg_id_t id) + { + struct { + GC_msg_t msg; + mach_msg_trailer_t trailer; + } buf; + mach_msg_return_t r; + + /* remote, local */ + buf.msg.head.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_MAKE_SEND, 0); + buf.msg.head.msgh_size = sizeof(buf.msg); + buf.msg.head.msgh_remote_port = GC_ports.exception; + buf.msg.head.msgh_local_port = MACH_PORT_NULL; + buf.msg.head.msgh_id = id; + + r = mach_msg(&buf.msg.head, MACH_SEND_MSG | MACH_RCV_MSG | MACH_RCV_LARGE, + sizeof(buf.msg), sizeof(buf), GC_ports.reply, + MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); + if (r != MACH_MSG_SUCCESS) + ABORT("mach_msg failed in GC_mprotect_thread_notify"); + if (buf.msg.head.msgh_id != ID_ACK) + ABORT("Invalid ack in GC_mprotect_thread_notify"); + } + + /* Should only be called by the mprotect thread */ + STATIC void GC_mprotect_thread_reply(void) + { + GC_msg_t msg; + mach_msg_return_t r; + /* remote, local */ + + msg.head.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_MAKE_SEND, 0); + msg.head.msgh_size = sizeof(msg); + msg.head.msgh_remote_port = GC_ports.reply; + msg.head.msgh_local_port = MACH_PORT_NULL; + msg.head.msgh_id = ID_ACK; + + r = mach_msg(&msg.head, MACH_SEND_MSG, sizeof(msg), 0, MACH_PORT_NULL, + MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); + if (r != MACH_MSG_SUCCESS) + ABORT("mach_msg failed in GC_mprotect_thread_reply"); + } + + GC_INNER void GC_mprotect_stop(void) + { + GC_mprotect_thread_notify(ID_STOP); + } + + GC_INNER void GC_mprotect_resume(void) + { + GC_mprotect_thread_notify(ID_RESUME); + } + +# ifndef GC_NO_THREADS_DISCOVERY + GC_INNER void GC_darwin_register_mach_handler_thread(mach_port_t thread); +# endif + +#else + /* The compiler should optimize away any GC_mprotect_state computations */ +# define GC_mprotect_state GC_MP_NORMAL +#endif /* !THREADS */ + +STATIC void *GC_mprotect_thread(void *arg) +{ + mach_msg_return_t r; + /* These two structures contain some private kernel data. We don't */ + /* need to access any of it so we don't bother defining a proper */ + /* struct. The correct definitions are in the xnu source code. */ + struct { + mach_msg_header_t head; + char data[256]; + } reply; + struct { + mach_msg_header_t head; + mach_msg_body_t msgh_body; + char data[1024]; + } msg; + mach_msg_id_t id; + + if ((word)arg == (word)-1) return 0; /* to make compiler happy */ +# if defined(CPPCHECK) + reply.data[0] = 0; /* to prevent "field unused" warnings */ + msg.data[0] = 0; +# endif + +# if defined(THREADS) && !defined(GC_NO_THREADS_DISCOVERY) + GC_darwin_register_mach_handler_thread(mach_thread_self()); +# endif + + for(;;) { + r = mach_msg(&msg.head, MACH_RCV_MSG | MACH_RCV_LARGE | + (GC_mprotect_state == GC_MP_DISCARDING ? MACH_RCV_TIMEOUT : 0), + 0, sizeof(msg), GC_ports.exception, + GC_mprotect_state == GC_MP_DISCARDING ? 0 + : MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); + id = r == MACH_MSG_SUCCESS ? msg.head.msgh_id : -1; + +# if defined(THREADS) + if(GC_mprotect_state == GC_MP_DISCARDING) { + if(r == MACH_RCV_TIMED_OUT) { + GC_mprotect_state = GC_MP_STOPPED; + GC_mprotect_thread_reply(); + continue; + } + if(r == MACH_MSG_SUCCESS && (id == ID_STOP || id == ID_RESUME)) + ABORT("Out of order mprotect thread request"); + } +# endif /* THREADS */ + + if (r != MACH_MSG_SUCCESS) { + ABORT_ARG2("mach_msg failed", + ": errcode= %d (%s)", (int)r, mach_error_string(r)); + } + + switch(id) { +# if defined(THREADS) + case ID_STOP: + if(GC_mprotect_state != GC_MP_NORMAL) + ABORT("Called mprotect_stop when state wasn't normal"); + GC_mprotect_state = GC_MP_DISCARDING; + break; + case ID_RESUME: + if(GC_mprotect_state != GC_MP_STOPPED) + ABORT("Called mprotect_resume when state wasn't stopped"); + GC_mprotect_state = GC_MP_NORMAL; + GC_mprotect_thread_reply(); + break; +# endif /* THREADS */ + default: + /* Handle the message (calls catch_exception_raise) */ + if(!exc_server(&msg.head, &reply.head)) + ABORT("exc_server failed"); + /* Send the reply */ + r = mach_msg(&reply.head, MACH_SEND_MSG, reply.head.msgh_size, 0, + MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, + MACH_PORT_NULL); + if(r != MACH_MSG_SUCCESS) { + /* This will fail if the thread dies, but the thread */ + /* shouldn't die... */ +# ifdef BROKEN_EXCEPTION_HANDLING + GC_err_printf("mach_msg failed with %d %s while sending " + "exc reply\n", (int)r, mach_error_string(r)); +# else + ABORT("mach_msg failed while sending exception reply"); +# endif + } + } /* switch */ + } /* for(;;) */ +} + +/* All this SIGBUS code shouldn't be necessary. All protection faults should + be going through the mach exception handler. However, it seems a SIGBUS is + occasionally sent for some unknown reason. Even more odd, it seems to be + meaningless and safe to ignore. */ +#ifdef BROKEN_EXCEPTION_HANDLING + + /* Updates to this aren't atomic, but the SIGBUS'es seem pretty rare. */ + /* Even if this doesn't get updated property, it isn't really a problem. */ + STATIC int GC_sigbus_count = 0; + + STATIC void GC_darwin_sigbus(int num, siginfo_t *sip, void *context) + { + if (num != SIGBUS) + ABORT("Got a non-sigbus signal in the sigbus handler"); + + /* Ugh... some seem safe to ignore, but too many in a row probably means + trouble. GC_sigbus_count is reset for each mach exception that is + handled */ + if (GC_sigbus_count >= 8) { + ABORT("Got more than 8 SIGBUSs in a row!"); + } else { + GC_sigbus_count++; + WARN("Ignoring SIGBUS\n", 0); + } + } +#endif /* BROKEN_EXCEPTION_HANDLING */ + +GC_INNER GC_bool GC_dirty_init(void) +{ + kern_return_t r; + mach_port_t me; + pthread_t thread; + pthread_attr_t attr; + exception_mask_t mask; + +# ifdef CAN_HANDLE_FORK + if (GC_handle_fork) { + /* To both support GC incremental mode and GC functions usage in */ + /* the forked child, pthread_atfork should be used to install */ + /* handlers that switch off GC_incremental in the child */ + /* gracefully (unprotecting all pages and clearing */ + /* GC_mach_handler_thread). For now, we just disable incremental */ + /* mode if fork() handling is requested by the client. */ + WARN("Can't turn on GC incremental mode as fork()" + " handling requested\n", 0); + return FALSE; + } +# endif + + GC_VERBOSE_LOG_PRINTF("Initializing mach/darwin mprotect" + " virtual dirty bit implementation\n"); +# ifdef BROKEN_EXCEPTION_HANDLING + WARN("Enabling workarounds for various darwin " + "exception handling bugs\n", 0); +# endif + if (GC_page_size % HBLKSIZE != 0) { + ABORT("Page size not multiple of HBLKSIZE"); + } + + GC_task_self = me = mach_task_self(); + + r = mach_port_allocate(me, MACH_PORT_RIGHT_RECEIVE, &GC_ports.exception); + /* TODO: WARN and return FALSE in case of a failure. */ + if (r != KERN_SUCCESS) + ABORT("mach_port_allocate failed (exception port)"); + + r = mach_port_insert_right(me, GC_ports.exception, GC_ports.exception, + MACH_MSG_TYPE_MAKE_SEND); + if (r != KERN_SUCCESS) + ABORT("mach_port_insert_right failed (exception port)"); + +# if defined(THREADS) + r = mach_port_allocate(me, MACH_PORT_RIGHT_RECEIVE, &GC_ports.reply); + if(r != KERN_SUCCESS) + ABORT("mach_port_allocate failed (reply port)"); +# endif + + /* The exceptions we want to catch */ + mask = EXC_MASK_BAD_ACCESS; + + r = task_get_exception_ports(me, mask, GC_old_exc_ports.masks, + &GC_old_exc_ports.count, GC_old_exc_ports.ports, + GC_old_exc_ports.behaviors, + GC_old_exc_ports.flavors); + if (r != KERN_SUCCESS) + ABORT("task_get_exception_ports failed"); + + r = task_set_exception_ports(me, mask, GC_ports.exception, EXCEPTION_DEFAULT, + GC_MACH_THREAD_STATE); + if (r != KERN_SUCCESS) + ABORT("task_set_exception_ports failed"); + if (pthread_attr_init(&attr) != 0) + ABORT("pthread_attr_init failed"); + if (pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0) + ABORT("pthread_attr_setdetachedstate failed"); + +# undef pthread_create + /* This will call the real pthread function, not our wrapper */ + if (pthread_create(&thread, &attr, GC_mprotect_thread, NULL) != 0) + ABORT("pthread_create failed"); + (void)pthread_attr_destroy(&attr); + + /* Setup the sigbus handler for ignoring the meaningless SIGBUSs */ +# ifdef BROKEN_EXCEPTION_HANDLING + { + struct sigaction sa, oldsa; + sa.sa_handler = (SIG_HNDLR_PTR)GC_darwin_sigbus; + sigemptyset(&sa.sa_mask); + sa.sa_flags = SA_RESTART|SA_SIGINFO; + /* sa.sa_restorer is deprecated and should not be initialized. */ + if (sigaction(SIGBUS, &sa, &oldsa) < 0) + ABORT("sigaction failed"); + if ((SIG_HNDLR_PTR)oldsa.sa_handler != SIG_DFL) { + GC_VERBOSE_LOG_PRINTF("Replaced other SIGBUS handler\n"); + } + } +# endif /* BROKEN_EXCEPTION_HANDLING */ + return TRUE; +} + +/* The source code for Apple's GDB was used as a reference for the */ +/* exception forwarding code. This code is similar to be GDB code only */ +/* because there is only one way to do it. */ +STATIC kern_return_t GC_forward_exception(mach_port_t thread, mach_port_t task, + exception_type_t exception, + exception_data_t data, + mach_msg_type_number_t data_count) +{ + unsigned int i; + kern_return_t r; + mach_port_t port; + exception_behavior_t behavior; + thread_state_flavor_t flavor; + + thread_state_data_t thread_state; + mach_msg_type_number_t thread_state_count = THREAD_STATE_MAX; + + for (i=0; i < GC_old_exc_ports.count; i++) + if (GC_old_exc_ports.masks[i] & (1 << exception)) + break; + if (i == GC_old_exc_ports.count) + ABORT("No handler for exception!"); + + port = GC_old_exc_ports.ports[i]; + behavior = GC_old_exc_ports.behaviors[i]; + flavor = GC_old_exc_ports.flavors[i]; + + if (behavior == EXCEPTION_STATE || behavior == EXCEPTION_STATE_IDENTITY) { + r = thread_get_state(thread, flavor, thread_state, &thread_state_count); + if(r != KERN_SUCCESS) + ABORT("thread_get_state failed in forward_exception"); + } + + switch(behavior) { + case EXCEPTION_STATE: + r = exception_raise_state(port, thread, task, exception, data, data_count, + &flavor, thread_state, thread_state_count, + thread_state, &thread_state_count); + break; + case EXCEPTION_STATE_IDENTITY: + r = exception_raise_state_identity(port, thread, task, exception, data, + data_count, &flavor, thread_state, + thread_state_count, thread_state, + &thread_state_count); + break; + /* case EXCEPTION_DEFAULT: */ /* default signal handlers */ + default: /* user-supplied signal handlers */ + r = exception_raise(port, thread, task, exception, data, data_count); + } + + if (behavior == EXCEPTION_STATE || behavior == EXCEPTION_STATE_IDENTITY) { + r = thread_set_state(thread, flavor, thread_state, thread_state_count); + if (r != KERN_SUCCESS) + ABORT("thread_set_state failed in forward_exception"); + } + return r; +} + +#define FWD() GC_forward_exception(thread, task, exception, code, code_count) + +#ifdef ARM32 +# define DARWIN_EXC_STATE ARM_EXCEPTION_STATE +# define DARWIN_EXC_STATE_COUNT ARM_EXCEPTION_STATE_COUNT +# define DARWIN_EXC_STATE_T arm_exception_state_t +# define DARWIN_EXC_STATE_DAR THREAD_FLD_NAME(far) +#elif defined(AARCH64) +# define DARWIN_EXC_STATE ARM_EXCEPTION_STATE64 +# define DARWIN_EXC_STATE_COUNT ARM_EXCEPTION_STATE64_COUNT +# define DARWIN_EXC_STATE_T arm_exception_state64_t +# define DARWIN_EXC_STATE_DAR THREAD_FLD_NAME(far) +#elif defined(POWERPC) +# if CPP_WORDSZ == 32 +# define DARWIN_EXC_STATE PPC_EXCEPTION_STATE +# define DARWIN_EXC_STATE_COUNT PPC_EXCEPTION_STATE_COUNT +# define DARWIN_EXC_STATE_T ppc_exception_state_t +# else +# define DARWIN_EXC_STATE PPC_EXCEPTION_STATE64 +# define DARWIN_EXC_STATE_COUNT PPC_EXCEPTION_STATE64_COUNT +# define DARWIN_EXC_STATE_T ppc_exception_state64_t +# endif +# define DARWIN_EXC_STATE_DAR THREAD_FLD_NAME(dar) +#elif defined(I386) || defined(X86_64) +# if CPP_WORDSZ == 32 +# if defined(i386_EXCEPTION_STATE_COUNT) \ + && !defined(x86_EXCEPTION_STATE32_COUNT) + /* Use old naming convention for 32-bit x86. */ +# define DARWIN_EXC_STATE i386_EXCEPTION_STATE +# define DARWIN_EXC_STATE_COUNT i386_EXCEPTION_STATE_COUNT +# define DARWIN_EXC_STATE_T i386_exception_state_t +# else +# define DARWIN_EXC_STATE x86_EXCEPTION_STATE32 +# define DARWIN_EXC_STATE_COUNT x86_EXCEPTION_STATE32_COUNT +# define DARWIN_EXC_STATE_T x86_exception_state32_t +# endif +# else +# define DARWIN_EXC_STATE x86_EXCEPTION_STATE64 +# define DARWIN_EXC_STATE_COUNT x86_EXCEPTION_STATE64_COUNT +# define DARWIN_EXC_STATE_T x86_exception_state64_t +# endif +# define DARWIN_EXC_STATE_DAR THREAD_FLD_NAME(faultvaddr) +#elif !defined(CPPCHECK) +# error FIXME for non-arm/ppc/x86 darwin +#endif + +/* This violates the namespace rules but there isn't anything that can */ +/* be done about it. The exception handling stuff is hard coded to */ +/* call this. catch_exception_raise, catch_exception_raise_state and */ +/* and catch_exception_raise_state_identity are called from OS. */ +GC_API_OSCALL kern_return_t +catch_exception_raise(mach_port_t exception_port GC_ATTR_UNUSED, + mach_port_t thread, mach_port_t task GC_ATTR_UNUSED, + exception_type_t exception, exception_data_t code, + mach_msg_type_number_t code_count GC_ATTR_UNUSED) +{ + kern_return_t r; + char *addr; + thread_state_flavor_t flavor = DARWIN_EXC_STATE; + mach_msg_type_number_t exc_state_count = DARWIN_EXC_STATE_COUNT; + DARWIN_EXC_STATE_T exc_state; + + if (exception != EXC_BAD_ACCESS || code[0] != KERN_PROTECTION_FAILURE) { +# ifdef DEBUG_EXCEPTION_HANDLING + /* We aren't interested, pass it on to the old handler */ + GC_log_printf("Exception: 0x%x Code: 0x%x 0x%x in catch...\n", + exception, code_count > 0 ? code[0] : -1, + code_count > 1 ? code[1] : -1); +# endif + return FWD(); + } + + r = thread_get_state(thread, flavor, (natural_t*)&exc_state, + &exc_state_count); + if(r != KERN_SUCCESS) { + /* The thread is supposed to be suspended while the exception */ + /* handler is called. This shouldn't fail. */ +# ifdef BROKEN_EXCEPTION_HANDLING + GC_err_printf("thread_get_state failed in catch_exception_raise\n"); + return KERN_SUCCESS; +# else + ABORT("thread_get_state failed in catch_exception_raise"); +# endif + } + + /* This is the address that caused the fault */ + addr = (char*) exc_state.DARWIN_EXC_STATE_DAR; + if (HDR(addr) == 0) { + /* Ugh... just like the SIGBUS problem above, it seems we get */ + /* a bogus KERN_PROTECTION_FAILURE every once and a while. We wait */ + /* till we get a bunch in a row before doing anything about it. */ + /* If a "real" fault ever occurs it'll just keep faulting over and */ + /* over and we'll hit the limit pretty quickly. */ +# ifdef BROKEN_EXCEPTION_HANDLING + static char *last_fault; + static int last_fault_count; + + if(addr != last_fault) { + last_fault = addr; + last_fault_count = 0; + } + if(++last_fault_count < 32) { + if(last_fault_count == 1) + WARN("Ignoring KERN_PROTECTION_FAILURE at %p\n", addr); + return KERN_SUCCESS; + } + + GC_err_printf("Unexpected KERN_PROTECTION_FAILURE at %p; aborting...\n", + (void *)addr); + /* Can't pass it along to the signal handler because that is */ + /* ignoring SIGBUS signals. We also shouldn't call ABORT here as */ + /* signals don't always work too well from the exception handler. */ + EXIT(); +# else /* BROKEN_EXCEPTION_HANDLING */ + /* Pass it along to the next exception handler + (which should call SIGBUS/SIGSEGV) */ + return FWD(); +# endif /* !BROKEN_EXCEPTION_HANDLING */ + } + +# ifdef BROKEN_EXCEPTION_HANDLING + /* Reset the number of consecutive SIGBUSs */ + GC_sigbus_count = 0; +# endif + + if (GC_mprotect_state == GC_MP_NORMAL) { /* common case */ + struct hblk * h = (struct hblk*)((word)addr & ~(GC_page_size-1)); + size_t i; + + UNPROTECT(h, GC_page_size); + for (i = 0; i < divHBLKSZ(GC_page_size); i++) { + register int index = PHT_HASH(h+i); + async_set_pht_entry_from_index(GC_dirty_pages, index); + } + } else if (GC_mprotect_state == GC_MP_DISCARDING) { + /* Lie to the thread for now. No sense UNPROTECT()ing the memory + when we're just going to PROTECT() it again later. The thread + will just fault again once it resumes */ + } else { + /* Shouldn't happen, i don't think */ + GC_err_printf("KERN_PROTECTION_FAILURE while world is stopped\n"); + return FWD(); + } + return KERN_SUCCESS; +} +#undef FWD + +#ifndef NO_DESC_CATCH_EXCEPTION_RAISE + /* These symbols should have REFERENCED_DYNAMICALLY (0x10) bit set to */ + /* let strip know they are not to be stripped. */ + __asm__(".desc _catch_exception_raise, 0x10"); + __asm__(".desc _catch_exception_raise_state, 0x10"); + __asm__(".desc _catch_exception_raise_state_identity, 0x10"); +#endif + +#endif /* DARWIN && MPROTECT_VDB */ + +#ifndef HAVE_INCREMENTAL_PROTECTION_NEEDS + GC_API int GC_CALL GC_incremental_protection_needs(void) + { + return GC_PROTECTS_NONE; + } +#endif /* !HAVE_INCREMENTAL_PROTECTION_NEEDS */ + +#ifdef ECOS + /* Undo sbrk() redirection. */ +# undef sbrk +#endif + +/* If value is non-zero then allocate executable memory. */ +GC_API void GC_CALL GC_set_pages_executable(int value) +{ + GC_ASSERT(!GC_is_initialized); + /* Even if IGNORE_PAGES_EXECUTABLE is defined, GC_pages_executable is */ + /* touched here to prevent a compiler warning. */ + GC_pages_executable = (GC_bool)(value != 0); +} + +/* Returns non-zero if the GC-allocated memory is executable. */ +/* GC_get_pages_executable is defined after all the places */ +/* where GC_get_pages_executable is undefined. */ +GC_API int GC_CALL GC_get_pages_executable(void) +{ +# ifdef IGNORE_PAGES_EXECUTABLE + return 1; /* Always allocate executable memory. */ +# else + return (int)GC_pages_executable; +# endif +} + +/* Call stack save code for debugging. Should probably be in */ +/* mach_dep.c, but that requires reorganization. */ + +/* I suspect the following works for most X86 *nix variants, so */ +/* long as the frame pointer is explicitly stored. In the case of gcc, */ +/* compiler flags (e.g. -fomit-frame-pointer) determine whether it is. */ +#if defined(I386) && defined(LINUX) && defined(SAVE_CALL_CHAIN) +# include + + struct frame { + struct frame *fr_savfp; + long fr_savpc; +# if NARGS > 0 + long fr_arg[NARGS]; /* All the arguments go here. */ +# endif + }; +#endif + +#if defined(SPARC) +# if defined(LINUX) +# include + + struct frame { + long fr_local[8]; + long fr_arg[6]; + struct frame *fr_savfp; + long fr_savpc; +# ifndef __arch64__ + char *fr_stret; +# endif + long fr_argd[6]; + long fr_argx[0]; + }; +# elif defined (DRSNX) +# include +# elif defined(OPENBSD) +# include +# elif defined(FREEBSD) || defined(NETBSD) +# include +# else +# include +# endif +# if NARGS > 6 +# error We only know how to get the first 6 arguments +# endif +#endif /* SPARC */ + +#ifdef NEED_CALLINFO +/* Fill in the pc and argument information for up to NFRAMES of my */ +/* callers. Ignore my frame and my callers frame. */ + +#ifdef LINUX +# include +#endif + +#endif /* NEED_CALLINFO */ + +#if defined(GC_HAVE_BUILTIN_BACKTRACE) +# ifdef _MSC_VER +# include "private/msvc_dbg.h" +# else +# include +# endif +#endif + +#ifdef SAVE_CALL_CHAIN + +#if NARGS == 0 && NFRAMES % 2 == 0 /* No padding */ \ + && defined(GC_HAVE_BUILTIN_BACKTRACE) + +#ifdef REDIRECT_MALLOC + /* Deal with possible malloc calls in backtrace by omitting */ + /* the infinitely recursing backtrace. */ +# ifdef THREADS + __thread /* If your compiler doesn't understand this */ + /* you could use something like pthread_getspecific. */ +# endif + GC_bool GC_in_save_callers = FALSE; +#endif + +GC_INNER void GC_save_callers(struct callinfo info[NFRAMES]) +{ + void * tmp_info[NFRAMES + 1]; + int npcs, i; +# define IGNORE_FRAMES 1 + + /* We retrieve NFRAMES+1 pc values, but discard the first, since it */ + /* points to our own frame. */ +# ifdef REDIRECT_MALLOC + if (GC_in_save_callers) { + info[0].ci_pc = (word)(&GC_save_callers); + for (i = 1; i < NFRAMES; ++i) info[i].ci_pc = 0; + return; + } + GC_in_save_callers = TRUE; +# endif + GC_STATIC_ASSERT(sizeof(struct callinfo) == sizeof(void *)); + npcs = backtrace((void **)tmp_info, NFRAMES + IGNORE_FRAMES); + BCOPY(tmp_info+IGNORE_FRAMES, info, (npcs - IGNORE_FRAMES) * sizeof(void *)); + for (i = npcs - IGNORE_FRAMES; i < NFRAMES; ++i) info[i].ci_pc = 0; +# ifdef REDIRECT_MALLOC + GC_in_save_callers = FALSE; +# endif +} + +#else /* No builtin backtrace; do it ourselves */ + +#if (defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD)) && defined(SPARC) +# define FR_SAVFP fr_fp +# define FR_SAVPC fr_pc +#else +# define FR_SAVFP fr_savfp +# define FR_SAVPC fr_savpc +#endif + +#if defined(SPARC) && (defined(__arch64__) || defined(__sparcv9)) +# define BIAS 2047 +#else +# define BIAS 0 +#endif + +GC_INNER void GC_save_callers(struct callinfo info[NFRAMES]) +{ + struct frame *frame; + struct frame *fp; + int nframes = 0; +# ifdef I386 + /* We assume this is turned on only with gcc as the compiler. */ + asm("movl %%ebp,%0" : "=r"(frame)); + fp = frame; +# else + frame = (struct frame *)GC_save_regs_in_stack(); + fp = (struct frame *)((long) frame -> FR_SAVFP + BIAS); +#endif + + for (; !((word)fp HOTTER_THAN (word)frame) + && !((word)GC_stackbottom HOTTER_THAN (word)fp) + && nframes < NFRAMES; + fp = (struct frame *)((long) fp -> FR_SAVFP + BIAS), nframes++) { +# if NARGS > 0 + register int i; +# endif + + info[nframes].ci_pc = fp->FR_SAVPC; +# if NARGS > 0 + for (i = 0; i < NARGS; i++) { + info[nframes].ci_arg[i] = ~(fp->fr_arg[i]); + } +# endif /* NARGS > 0 */ + } + if (nframes < NFRAMES) info[nframes].ci_pc = 0; +} + +#endif /* No builtin backtrace */ + +#endif /* SAVE_CALL_CHAIN */ + +#ifdef NEED_CALLINFO + +/* Print info to stderr. We do NOT hold the allocation lock */ +GC_INNER void GC_print_callers(struct callinfo info[NFRAMES]) +{ + int i; + static int reentry_count = 0; + GC_bool stop = FALSE; + DCL_LOCK_STATE; + + /* FIXME: This should probably use a different lock, so that we */ + /* become callable with or without the allocation lock. */ + LOCK(); + ++reentry_count; + UNLOCK(); + +# if NFRAMES == 1 + GC_err_printf("\tCaller at allocation:\n"); +# else + GC_err_printf("\tCall chain at allocation:\n"); +# endif + for (i = 0; i < NFRAMES && !stop; i++) { + if (info[i].ci_pc == 0) break; +# if NARGS > 0 + { + int j; + + GC_err_printf("\t\targs: "); + for (j = 0; j < NARGS; j++) { + if (j != 0) GC_err_printf(", "); + GC_err_printf("%d (0x%X)", ~(info[i].ci_arg[j]), + ~(info[i].ci_arg[j])); + } + GC_err_printf("\n"); + } +# endif + if (reentry_count > 1) { + /* We were called during an allocation during */ + /* a previous GC_print_callers call; punt. */ + GC_err_printf("\t\t##PC##= 0x%lx\n", + (unsigned long)info[i].ci_pc); + continue; + } + { +# if defined(GC_HAVE_BUILTIN_BACKTRACE) \ + && !defined(GC_BACKTRACE_SYMBOLS_BROKEN) + char **sym_name = + backtrace_symbols((void **)(&(info[i].ci_pc)), 1); + char *name = sym_name[0]; +# else + char buf[40]; + char *name = buf; + (void)snprintf(buf, sizeof(buf), "##PC##= 0x%lx", + (unsigned long)info[i].ci_pc); + buf[sizeof(buf) - 1] = '\0'; +# endif +# if defined(LINUX) && !defined(SMALL_CONFIG) + /* Try for a line number. */ + { + FILE *pipe; +# define EXE_SZ 100 + static char exe_name[EXE_SZ]; +# define CMD_SZ 200 + char cmd_buf[CMD_SZ]; +# define RESULT_SZ 200 + static char result_buf[RESULT_SZ]; + size_t result_len; + char *old_preload; +# define PRELOAD_SZ 200 + char preload_buf[PRELOAD_SZ]; + static GC_bool found_exe_name = FALSE; + static GC_bool will_fail = FALSE; + int ret_code; + /* Try to get it via a hairy and expensive scheme. */ + /* First we get the name of the executable: */ + if (will_fail) goto out; + if (!found_exe_name) { + ret_code = readlink("/proc/self/exe", exe_name, EXE_SZ); + if (ret_code < 0 || ret_code >= EXE_SZ + || exe_name[0] != '/') { + will_fail = TRUE; /* Don't try again. */ + goto out; + } + exe_name[ret_code] = '\0'; + found_exe_name = TRUE; + } + /* Then we use popen to start addr2line -e */ + /* There are faster ways to do this, but hopefully this */ + /* isn't time critical. */ + (void)snprintf(cmd_buf, sizeof(cmd_buf), + "/usr/bin/addr2line -f -e %s 0x%lx", + exe_name, (unsigned long)info[i].ci_pc); + cmd_buf[sizeof(cmd_buf) - 1] = '\0'; + old_preload = GETENV("LD_PRELOAD"); + if (0 != old_preload) { + size_t old_len = strlen(old_preload); + if (old_len >= PRELOAD_SZ) { + will_fail = TRUE; + goto out; + } + BCOPY(old_preload, preload_buf, old_len + 1); + unsetenv ("LD_PRELOAD"); + } + pipe = popen(cmd_buf, "r"); + if (0 != old_preload + && 0 != setenv ("LD_PRELOAD", preload_buf, 0)) { + WARN("Failed to reset LD_PRELOAD\n", 0); + } + if (pipe == NULL + || (result_len = fread(result_buf, 1, + RESULT_SZ - 1, pipe)) == 0) { + if (pipe != NULL) pclose(pipe); + will_fail = TRUE; + goto out; + } + if (result_buf[result_len - 1] == '\n') --result_len; + result_buf[result_len] = 0; + if (result_buf[0] == '?' + || (result_buf[result_len-2] == ':' + && result_buf[result_len-1] == '0')) { + pclose(pipe); + goto out; + } + /* Get rid of embedded newline, if any. Test for "main" */ + { + char * nl = strchr(result_buf, '\n'); + if (nl != NULL + && (word)nl < (word)(result_buf + result_len)) { + *nl = ':'; + } + if (strncmp(result_buf, "main", nl - result_buf) == 0) { + stop = TRUE; + } + } + if (result_len < RESULT_SZ - 25) { + /* Add in hex address */ + (void)snprintf(&result_buf[result_len], + sizeof(result_buf) - result_len, + " [0x%lx]", (unsigned long)info[i].ci_pc); + result_buf[sizeof(result_buf) - 1] = '\0'; + } + name = result_buf; + pclose(pipe); + out:; + } +# endif /* LINUX */ + GC_err_printf("\t\t%s\n", name); +# if defined(GC_HAVE_BUILTIN_BACKTRACE) \ + && !defined(GC_BACKTRACE_SYMBOLS_BROKEN) + free(sym_name); /* May call GC_[debug_]free; that's OK */ +# endif + } + } + LOCK(); + --reentry_count; + UNLOCK(); +} + +#endif /* NEED_CALLINFO */ + +#if defined(LINUX) && defined(__ELF__) && !defined(SMALL_CONFIG) + /* Dump /proc/self/maps to GC_stderr, to enable looking up names for */ + /* addresses in FIND_LEAK output. */ + void GC_print_address_map(void) + { + char *maps; + + GC_err_printf("---------- Begin address map ----------\n"); + maps = GC_get_maps(); + GC_err_puts(maps != NULL ? maps : "Failed to get map!\n"); + GC_err_printf("---------- End address map ----------\n"); + } +#endif /* LINUX && ELF */ diff --git a/pcr_interface.c b/pcr_interface.c new file mode 100644 index 0000000..35213bf --- /dev/null +++ b/pcr_interface.c @@ -0,0 +1,181 @@ +/* + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ +# include "private/gc_priv.h" + +# ifdef PCR +/* + * Note that POSIX PCR requires an ANSI C compiler. Hence we are allowed + * to make the same assumption here. + * We wrap all of the allocator functions to avoid questions of + * compatibility between the prototyped and nonprototyped versions of the f + */ +# include "config/PCR_StdTypes.h" +# include "mm/PCR_MM.h" +# include + +# define MY_MAGIC 17L +# define MY_DEBUGMAGIC 42L + +void * GC_AllocProc(size_t size, PCR_Bool ptrFree, PCR_Bool clear ) +{ + if (ptrFree) { + void * result = (void *)GC_malloc_atomic(size); + if (clear && result != 0) BZERO(result, size); + return(result); + } else { + return((void *)GC_malloc(size)); + } +} + +void * GC_DebugAllocProc(size_t size, PCR_Bool ptrFree, PCR_Bool clear ) +{ + if (ptrFree) { + void * result = (void *)GC_debug_malloc_atomic(size, __FILE__, + __LINE__); + if (clear && result != 0) BZERO(result, size); + return(result); + } else { + return((void *)GC_debug_malloc(size, __FILE__, __LINE__)); + } +} + +# define GC_ReallocProc GC_realloc +void * GC_DebugReallocProc(void * old_object, size_t new_size_in_bytes) +{ + return(GC_debug_realloc(old_object, new_size_in_bytes, __FILE__, __LINE__)); +} + +# define GC_FreeProc GC_free +# define GC_DebugFreeProc GC_debug_free + +typedef struct { + PCR_ERes (*ed_proc)(void *p, size_t size, PCR_Any data); + GC_bool ed_pointerfree; + PCR_ERes ed_fail_code; + PCR_Any ed_client_data; +} enumerate_data; + +void GC_enumerate_block(struct hblk *h; enumerate_data * ed) +{ + register hdr * hhdr; + register int sz; + ptr_t p; + ptr_t lim; + word descr; + +# if !defined(CPPCHECK) +# error This code was updated without testing. +# error and its precursor was clearly broken. +# endif + hhdr = HDR(h); + descr = hhdr -> hb_descr; + sz = hhdr -> hb_sz; + if (descr != 0 && ed -> ed_pointerfree + || descr == 0 && !(ed -> ed_pointerfree)) return; + lim = (ptr_t)(h+1) - sz; + p = (ptr_t)h; + do { + if (PCR_ERes_IsErr(ed -> ed_fail_code)) return; + ed -> ed_fail_code = + (*(ed -> ed_proc))(p, sz, ed -> ed_client_data); + p+= sz; + } while ((word)p <= (word)lim); +} + +struct PCR_MM_ProcsRep * GC_old_allocator = 0; + +PCR_ERes GC_EnumerateProc( + PCR_Bool ptrFree, + PCR_ERes (*proc)(void *p, size_t size, PCR_Any data), + PCR_Any data +) +{ + enumerate_data ed; + + ed.ed_proc = proc; + ed.ed_pointerfree = ptrFree; + ed.ed_fail_code = PCR_ERes_okay; + ed.ed_client_data = data; + GC_apply_to_all_blocks(GC_enumerate_block, &ed); + if (ed.ed_fail_code != PCR_ERes_okay) { + return(ed.ed_fail_code); + } else { + /* Also enumerate objects allocated by my predecessors */ + return((*(GC_old_allocator->mmp_enumerate))(ptrFree, proc, data)); + } +} + +void GC_DummyFreeProc(void *p) {} + +void GC_DummyShutdownProc(void) {} + +struct PCR_MM_ProcsRep GC_Rep = { + MY_MAGIC, + GC_AllocProc, + GC_ReallocProc, + GC_DummyFreeProc, /* mmp_free */ + GC_FreeProc, /* mmp_unsafeFree */ + GC_EnumerateProc, + GC_DummyShutdownProc /* mmp_shutdown */ +}; + +struct PCR_MM_ProcsRep GC_DebugRep = { + MY_DEBUGMAGIC, + GC_DebugAllocProc, + GC_DebugReallocProc, + GC_DummyFreeProc, /* mmp_free */ + GC_DebugFreeProc, /* mmp_unsafeFree */ + GC_EnumerateProc, + GC_DummyShutdownProc /* mmp_shutdown */ +}; + +GC_bool GC_use_debug = 0; + +void GC_pcr_install() +{ + PCR_MM_Install((GC_use_debug? &GC_DebugRep : &GC_Rep), &GC_old_allocator); +} + +PCR_ERes +PCR_GC_Setup(void) +{ + return PCR_ERes_okay; +} + +PCR_ERes +PCR_GC_Run(void) +{ + + if( !PCR_Base_TestPCRArg("-nogc") ) { + GC_quiet = ( PCR_Base_TestPCRArg("-gctrace") ? 0 : 1 ); + GC_use_debug = (GC_bool)PCR_Base_TestPCRArg("-debug_alloc"); + GC_init(); + if( !PCR_Base_TestPCRArg("-nogc_incremental") ) { + /* + * awful hack to test whether VD is implemented ... + */ + if( PCR_VD_Start( 0, NIL, 0) != PCR_ERes_FromErr(ENOSYS) ) { + GC_enable_incremental(); + } + } + } + return PCR_ERes_okay; +} + +void GC_push_thread_structures(void) +{ + /* PCR doesn't work unless static roots are pushed. Can't get here. */ + ABORT("In GC_push_thread_structures()"); +} + +# endif diff --git a/pthread_start.c b/pthread_start.c new file mode 100644 index 0000000..bd4fc4a --- /dev/null +++ b/pthread_start.c @@ -0,0 +1,70 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2010 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* We want to make sure that GC_thread_exit_proc() is unconditionally */ +/* invoked, even if the client is not compiled with -fexceptions, but */ +/* the GC is. The workaround is to put GC_inner_start_routine() in its */ +/* own file (pthread_start.c), and undefine __EXCEPTIONS in the GCC */ +/* case at the top of the file. FIXME: it's still unclear whether this */ +/* will actually cause the exit handler to be invoked last when */ +/* thread_exit is called (and if -fexceptions is used). */ +#if defined(__GNUC__) && defined(__linux__) + /* We undefine __EXCEPTIONS to avoid using GCC __cleanup__ attribute. */ + /* The current NPTL implementation of pthread_cleanup_push uses */ + /* __cleanup__ attribute when __EXCEPTIONS is defined (-fexceptions). */ + /* The stack unwinding and cleanup with __cleanup__ attributes work */ + /* correctly when everything is compiled with -fexceptions, but it is */ + /* not the requirement for this library clients to use -fexceptions */ + /* everywhere. With __EXCEPTIONS undefined, the cleanup routines are */ + /* registered with __pthread_register_cancel thus should work anyway. */ +# undef __EXCEPTIONS +#endif + +#include "private/pthread_support.h" + +#if defined(GC_PTHREADS) && !defined(GC_WIN32_THREADS) + +#include +#include + +/* Invoked from GC_start_routine(). */ +GC_INNER_PTHRSTART void * GC_CALLBACK GC_inner_start_routine( + struct GC_stack_base *sb, void *arg) +{ + void * (*start)(void *); + void * start_arg; + void * result; + volatile GC_thread me = + GC_start_rtn_prepare_thread(&start, &start_arg, sb, arg); + +# ifndef NACL + pthread_cleanup_push(GC_thread_exit_proc, me); +# endif + result = (*start)(start_arg); +# if defined(DEBUG_THREADS) && !defined(GC_PTHREAD_START_STANDALONE) + GC_log_printf("Finishing thread %p\n", (void *)pthread_self()); +# endif + me -> status = result; +# ifndef NACL + pthread_cleanup_pop(1); + /* Cleanup acquires lock, ensuring that we can't exit while */ + /* a collection that thinks we're alive is trying to stop us. */ +# endif + return result; +} + +#endif /* GC_PTHREADS */ diff --git a/pthread_stop_world.c b/pthread_stop_world.c new file mode 100644 index 0000000..43bee5c --- /dev/null +++ b/pthread_stop_world.c @@ -0,0 +1,1154 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2009 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/pthread_support.h" + +#if defined(GC_PTHREADS) && !defined(GC_WIN32_THREADS) && \ + !defined(GC_DARWIN_THREADS) + +#ifdef NACL + +# include +# include + + STATIC int GC_nacl_num_gc_threads = 0; + STATIC __thread int GC_nacl_thread_idx = -1; + STATIC volatile int GC_nacl_park_threads_now = 0; + STATIC volatile pthread_t GC_nacl_thread_parker = -1; + + GC_INNER __thread GC_thread GC_nacl_gc_thread_self = NULL; + + volatile int GC_nacl_thread_parked[MAX_NACL_GC_THREADS]; + int GC_nacl_thread_used[MAX_NACL_GC_THREADS]; + +#elif defined(GC_OPENBSD_UTHREADS) + +# include + +#else /* !GC_OPENBSD_UTHREADS && !NACL */ + +#include +#include +#include +#include /* for nanosleep() */ +#include +#include "atomic_ops.h" + +/* It's safe to call original pthread_sigmask() here. */ +#undef pthread_sigmask + +#ifdef GC_ENABLE_SUSPEND_THREAD + static void *GC_CALLBACK suspend_self_inner(void *client_data); +#endif + +#ifdef DEBUG_THREADS +# ifndef NSIG +# if defined(MAXSIG) +# define NSIG (MAXSIG+1) +# elif defined(_NSIG) +# define NSIG _NSIG +# elif defined(__SIGRTMAX) +# define NSIG (__SIGRTMAX+1) +# else +# error define NSIG +# endif +# endif /* NSIG */ + + void GC_print_sig_mask(void) + { + sigset_t blocked; + int i; + + if (pthread_sigmask(SIG_BLOCK, NULL, &blocked) != 0) + ABORT("pthread_sigmask failed"); + for (i = 1; i < NSIG; i++) { + if (sigismember(&blocked, i)) + GC_printf("Signal blocked: %d\n", i); + } + } +#endif /* DEBUG_THREADS */ + +/* Remove the signals that we want to allow in thread stopping */ +/* handler from a set. */ +STATIC void GC_remove_allowed_signals(sigset_t *set) +{ + if (sigdelset(set, SIGINT) != 0 + || sigdelset(set, SIGQUIT) != 0 + || sigdelset(set, SIGABRT) != 0 + || sigdelset(set, SIGTERM) != 0) { + ABORT("sigdelset failed"); + } + +# ifdef MPROTECT_VDB + /* Handlers write to the thread structure, which is in the heap, */ + /* and hence can trigger a protection fault. */ + if (sigdelset(set, SIGSEGV) != 0 +# ifdef HAVE_SIGBUS + || sigdelset(set, SIGBUS) != 0 +# endif + ) { + ABORT("sigdelset failed"); + } +# endif +} + +static sigset_t suspend_handler_mask; + +STATIC volatile AO_t GC_stop_count = 0; + /* Incremented at the beginning of GC_stop_world. */ + +STATIC volatile AO_t GC_world_is_stopped = FALSE; + /* FALSE ==> it is safe for threads to restart, */ + /* i.e. they will see another suspend signal */ + /* before they are expected to stop (unless */ + /* they have stopped voluntarily). */ + +#ifdef GC_OSF1_THREADS + STATIC GC_bool GC_retry_signals = TRUE; +#else + STATIC GC_bool GC_retry_signals = FALSE; +#endif + +/* + * We use signals to stop threads during GC. + * + * Suspended threads wait in signal handler for SIG_THR_RESTART. + * That's more portable than semaphores or condition variables. + * (We do use sem_post from a signal handler, but that should be portable.) + * + * The thread suspension signal SIG_SUSPEND is now defined in gc_priv.h. + * Note that we can't just stop a thread; we need it to save its stack + * pointer(s) and acknowledge. + */ +#ifndef SIG_THR_RESTART +# if defined(GC_HPUX_THREADS) || defined(GC_OSF1_THREADS) \ + || defined(GC_NETBSD_THREADS) || defined(GC_USESIGRT_SIGNALS) +# if defined(_SIGRTMIN) && !defined(CPPCHECK) +# define SIG_THR_RESTART _SIGRTMIN + 5 +# else +# define SIG_THR_RESTART SIGRTMIN + 5 +# endif +# else +# define SIG_THR_RESTART SIGXCPU +# endif +#endif + +#define SIGNAL_UNSET (-1) + /* Since SIG_SUSPEND and/or SIG_THR_RESTART could represent */ + /* a non-constant expression (e.g., in case of SIGRTMIN), */ + /* actual signal numbers are determined by GC_stop_init() */ + /* unless manually set (before GC initialization). */ +STATIC int GC_sig_suspend = SIGNAL_UNSET; +STATIC int GC_sig_thr_restart = SIGNAL_UNSET; + +GC_API void GC_CALL GC_set_suspend_signal(int sig) +{ + if (GC_is_initialized) return; + + GC_sig_suspend = sig; +} + +GC_API void GC_CALL GC_set_thr_restart_signal(int sig) +{ + if (GC_is_initialized) return; + + GC_sig_thr_restart = sig; +} + +GC_API int GC_CALL GC_get_suspend_signal(void) +{ + return GC_sig_suspend != SIGNAL_UNSET ? GC_sig_suspend : SIG_SUSPEND; +} + +GC_API int GC_CALL GC_get_thr_restart_signal(void) +{ + return GC_sig_thr_restart != SIGNAL_UNSET + ? GC_sig_thr_restart : SIG_THR_RESTART; +} + +#ifdef GC_EXPLICIT_SIGNALS_UNBLOCK + /* Some targets (e.g., Solaris) might require this to be called when */ + /* doing thread registering from the thread destructor. */ + GC_INNER void GC_unblock_gc_signals(void) + { + sigset_t set; + sigemptyset(&set); + GC_ASSERT(GC_sig_suspend != SIGNAL_UNSET); + GC_ASSERT(GC_sig_thr_restart != SIGNAL_UNSET); + sigaddset(&set, GC_sig_suspend); + sigaddset(&set, GC_sig_thr_restart); + if (pthread_sigmask(SIG_UNBLOCK, &set, NULL) != 0) + ABORT("pthread_sigmask failed"); + } +#endif /* GC_EXPLICIT_SIGNALS_UNBLOCK */ + +STATIC sem_t GC_suspend_ack_sem; + +#ifdef GC_NETBSD_THREADS +# define GC_NETBSD_THREADS_WORKAROUND + /* It seems to be necessary to wait until threads have restarted. */ + /* But it is unclear why that is the case. */ + STATIC sem_t GC_restart_ack_sem; +#endif + +STATIC void GC_suspend_handler_inner(ptr_t dummy, void *context); + +#ifndef NO_SA_SIGACTION + STATIC void GC_suspend_handler(int sig, siginfo_t * info GC_ATTR_UNUSED, + void * context GC_ATTR_UNUSED) +#else + STATIC void GC_suspend_handler(int sig) +#endif +{ + int old_errno = errno; + + if (sig != GC_sig_suspend) { +# if defined(GC_FREEBSD_THREADS) + /* Workaround "deferred signal handling" bug in FreeBSD 9.2. */ + if (0 == sig) return; +# endif + ABORT("Bad signal in suspend_handler"); + } + +# if defined(IA64) || defined(HP_PA) || defined(M68K) + GC_with_callee_saves_pushed(GC_suspend_handler_inner, NULL); +# else + /* We believe that in all other cases the full context is already */ + /* in the signal handler frame. */ + { +# ifdef NO_SA_SIGACTION + void *context = 0; +# endif + GC_suspend_handler_inner(NULL, context); + } +# endif + errno = old_errno; +} + +STATIC void GC_suspend_handler_inner(ptr_t dummy GC_ATTR_UNUSED, + void * context GC_ATTR_UNUSED) +{ + pthread_t self = pthread_self(); + GC_thread me; + IF_CANCEL(int cancel_state;) + AO_t my_stop_count = AO_load_acquire(&GC_stop_count); + /* After the barrier, this thread should see */ + /* the actual content of GC_threads. */ + + DISABLE_CANCEL(cancel_state); + /* pthread_setcancelstate is not defined to be async-signal-safe. */ + /* But the glibc version appears to be in the absence of */ + /* asynchronous cancellation. And since this signal handler */ + /* to block on sigsuspend, which is both async-signal-safe */ + /* and a cancellation point, there seems to be no obvious way */ + /* out of it. In fact, it looks to me like an async-signal-safe */ + /* cancellation point is inherently a problem, unless there is */ + /* some way to disable cancellation in the handler. */ +# ifdef DEBUG_THREADS + GC_log_printf("Suspending %p\n", (void *)self); +# endif + + me = GC_lookup_thread(self); + /* The lookup here is safe, since I'm doing this on behalf */ + /* of a thread which holds the allocation lock in order */ + /* to stop the world. Thus concurrent modification of the */ + /* data structure is impossible. */ + +# ifdef GC_ENABLE_SUSPEND_THREAD + if (AO_load(&me->suspended_ext)) { +# ifdef SPARC + me -> stop_info.stack_ptr = GC_save_regs_in_stack(); +# else + me -> stop_info.stack_ptr = GC_approx_sp(); +# ifdef IA64 + me -> backing_store_ptr = GC_save_regs_in_stack(); +# endif +# endif + sem_post(&GC_suspend_ack_sem); + suspend_self_inner(me); +# ifdef DEBUG_THREADS + GC_log_printf("Continuing %p on GC_resume_thread\n", (void *)self); +# endif + RESTORE_CANCEL(cancel_state); + return; + } +# endif + + if (me -> stop_info.last_stop_count == my_stop_count) { + /* Duplicate signal. OK if we are retrying. */ + if (!GC_retry_signals) { + WARN("Duplicate suspend signal in thread %p\n", self); + } + RESTORE_CANCEL(cancel_state); + return; + } +# ifdef SPARC + me -> stop_info.stack_ptr = GC_save_regs_in_stack(); +# else + me -> stop_info.stack_ptr = GC_approx_sp(); +# endif +# ifdef IA64 + me -> backing_store_ptr = GC_save_regs_in_stack(); +# endif + + /* Tell the thread that wants to stop the world that this */ + /* thread has been stopped. Note that sem_post() is */ + /* the only async-signal-safe primitive in LinuxThreads. */ + sem_post(&GC_suspend_ack_sem); + AO_store_release(&me->stop_info.last_stop_count, my_stop_count); + + /* Wait until that thread tells us to restart by sending */ + /* this thread a GC_sig_thr_restart signal (should be masked */ + /* at this point thus there is no race). */ + /* We do not continue until we receive that signal, */ + /* but we do not take that as authoritative. (We may be */ + /* accidentally restarted by one of the user signals we */ + /* don't block.) After we receive the signal, we use a */ + /* primitive and expensive mechanism to wait until it's */ + /* really safe to proceed. Under normal circumstances, */ + /* this code should not be executed. */ + do { + sigsuspend (&suspend_handler_mask); + } while (AO_load_acquire(&GC_world_is_stopped) + && AO_load(&GC_stop_count) == my_stop_count); + /* If the RESTART signal gets lost, we can still lose. That should */ + /* be less likely than losing the SUSPEND signal, since we don't do */ + /* much between the sem_post and sigsuspend. */ + /* We'd need more handshaking to work around that. */ + /* Simply dropping the sigsuspend call should be safe, but is */ + /* unlikely to be efficient. */ + +# ifdef DEBUG_THREADS + GC_log_printf("Continuing %p\n", (void *)self); +# endif + RESTORE_CANCEL(cancel_state); +} + +STATIC void GC_restart_handler(int sig) +{ +# if defined(DEBUG_THREADS) || defined(GC_NETBSD_THREADS_WORKAROUND) + int old_errno = errno; /* Preserve errno value. */ +# endif + + if (sig != GC_sig_thr_restart) + ABORT("Bad signal in restart handler"); + +# ifdef GC_NETBSD_THREADS_WORKAROUND + sem_post(&GC_restart_ack_sem); +# endif + + /* + ** Note: even if we don't do anything useful here, + ** it would still be necessary to have a signal handler, + ** rather than ignoring the signals, otherwise + ** the signals will not be delivered at all, and + ** will thus not interrupt the sigsuspend() above. + */ + +# ifdef DEBUG_THREADS + GC_log_printf("In GC_restart_handler for %p\n", (void *)pthread_self()); +# endif +# if defined(DEBUG_THREADS) || defined(GC_NETBSD_THREADS_WORKAROUND) + errno = old_errno; +# endif +} + +# ifdef USE_TKILL_ON_ANDROID + extern int tkill(pid_t tid, int sig); /* from sys/linux-unistd.h */ + + static int android_thread_kill(pid_t tid, int sig) + { + int ret; + int old_errno = errno; + + ret = tkill(tid, sig); + if (ret < 0) { + ret = errno; + errno = old_errno; + } + return ret; + } + +# define THREAD_SYSTEM_ID(t) (t)->kernel_id +# define RAISE_SIGNAL(t, sig) android_thread_kill(THREAD_SYSTEM_ID(t), sig) +# else +# define THREAD_SYSTEM_ID(t) (t)->id +# define RAISE_SIGNAL(t, sig) pthread_kill(THREAD_SYSTEM_ID(t), sig) +# endif /* !USE_TKILL_ON_ANDROID */ + +# ifdef GC_ENABLE_SUSPEND_THREAD +# include + + STATIC void GC_brief_async_signal_safe_sleep(void) + { + struct timeval tv; + tv.tv_sec = 0; +# if defined(GC_TIME_LIMIT) && !defined(CPPCHECK) + tv.tv_usec = 1000 * GC_TIME_LIMIT / 2; +# else + tv.tv_usec = 1000 * 50 / 2; +# endif + (void)select(0, 0, 0, 0, &tv); + } + + static void *GC_CALLBACK suspend_self_inner(void *client_data) { + GC_thread me = (GC_thread)client_data; + + while (AO_load_acquire(&me->suspended_ext)) { + /* TODO: Use sigsuspend() instead. */ + GC_brief_async_signal_safe_sleep(); + } + return NULL; + } + + GC_API void GC_CALL GC_suspend_thread(GC_SUSPEND_THREAD_ID thread) { + GC_thread t; + IF_CANCEL(int cancel_state;) + DCL_LOCK_STATE; + + LOCK(); + t = GC_lookup_thread((pthread_t)thread); + if (t == NULL || t -> suspended_ext) { + UNLOCK(); + return; + } + + /* Set the flag making the change visible to the signal handler. */ + AO_store_release(&t->suspended_ext, TRUE); + + if ((pthread_t)thread == pthread_self()) { + UNLOCK(); + /* It is safe as "t" cannot become invalid here (no race with */ + /* GC_unregister_my_thread). */ + (void)GC_do_blocking(suspend_self_inner, t); + return; + } + if ((t -> flags & FINISHED) != 0) { + /* Terminated but not joined yet. */ + UNLOCK(); + return; + } + + DISABLE_CANCEL(cancel_state); + /* GC_suspend_thread is not a cancellation point. */ +# ifdef PARALLEL_MARK + /* Ensure we do not suspend a thread while it is rebuilding */ + /* a free list, otherwise such a dead-lock is possible: */ + /* thread 1 is blocked in GC_wait_for_reclaim holding */ + /* the allocation lock, thread 2 is suspended in */ + /* GC_reclaim_generic invoked from GC_generic_malloc_many */ + /* (with GC_fl_builder_count > 0), and thread 3 is blocked */ + /* acquiring the allocation lock in GC_resume_thread. */ + if (GC_parallel) + GC_wait_for_reclaim(); +# endif + + /* TODO: Support GC_retry_signals */ + switch (RAISE_SIGNAL(t, GC_sig_suspend)) { + /* ESRCH cannot happen as terminated threads are handled above. */ + case 0: + break; + default: + ABORT("pthread_kill failed"); + } + + /* Wait for the thread to complete threads table lookup and */ + /* stack_ptr assignment. */ + GC_ASSERT(GC_thr_initialized); + while (sem_wait(&GC_suspend_ack_sem) != 0) { + if (errno != EINTR) + ABORT("sem_wait for handler failed (suspend_self)"); + } + RESTORE_CANCEL(cancel_state); + UNLOCK(); + } + + GC_API void GC_CALL GC_resume_thread(GC_SUSPEND_THREAD_ID thread) { + GC_thread t; + DCL_LOCK_STATE; + + LOCK(); + t = GC_lookup_thread((pthread_t)thread); + if (t != NULL) + AO_store(&t->suspended_ext, FALSE); + UNLOCK(); + } + + GC_API int GC_CALL GC_is_thread_suspended(GC_SUSPEND_THREAD_ID thread) { + GC_thread t; + int is_suspended = 0; + DCL_LOCK_STATE; + + LOCK(); + t = GC_lookup_thread((pthread_t)thread); + if (t != NULL && t -> suspended_ext) + is_suspended = (int)TRUE; + UNLOCK(); + return is_suspended; + } +# endif /* GC_ENABLE_SUSPEND_THREAD */ + +#endif /* !GC_OPENBSD_UTHREADS && !NACL */ + +#ifdef IA64 +# define IF_IA64(x) x +#else +# define IF_IA64(x) +#endif +/* We hold allocation lock. Should do exactly the right thing if the */ +/* world is stopped. Should not fail if it isn't. */ +GC_INNER void GC_push_all_stacks(void) +{ + GC_bool found_me = FALSE; + size_t nthreads = 0; + int i; + GC_thread p; + ptr_t lo, hi; + /* On IA64, we also need to scan the register backing store. */ + IF_IA64(ptr_t bs_lo; ptr_t bs_hi;) + struct GC_traced_stack_sect_s *traced_stack_sect; + pthread_t self = pthread_self(); + word total_size = 0; + + if (!EXPECT(GC_thr_initialized, TRUE)) + GC_thr_init(); +# ifdef DEBUG_THREADS + GC_log_printf("Pushing stacks from thread %p\n", (void *)self); +# endif + for (i = 0; i < THREAD_TABLE_SZ; i++) { + for (p = GC_threads[i]; p != 0; p = p -> next) { + if (p -> flags & FINISHED) continue; + ++nthreads; + traced_stack_sect = p -> traced_stack_sect; + if (THREAD_EQUAL(p -> id, self)) { + GC_ASSERT(!p->thread_blocked); +# ifdef SPARC + lo = (ptr_t)GC_save_regs_in_stack(); +# else + lo = GC_approx_sp(); +# endif + found_me = TRUE; + IF_IA64(bs_hi = (ptr_t)GC_save_regs_in_stack();) + } else { + lo = p -> stop_info.stack_ptr; + IF_IA64(bs_hi = p -> backing_store_ptr;) + if (traced_stack_sect != NULL + && traced_stack_sect->saved_stack_ptr == lo) { + /* If the thread has never been stopped since the recent */ + /* GC_call_with_gc_active invocation then skip the top */ + /* "stack section" as stack_ptr already points to. */ + traced_stack_sect = traced_stack_sect->prev; + } + } + if ((p -> flags & MAIN_THREAD) == 0) { + hi = p -> stack_end; + IF_IA64(bs_lo = p -> backing_store_end); + } else { + /* The original stack. */ + hi = GC_stackbottom; + IF_IA64(bs_lo = BACKING_STORE_BASE;) + } +# ifdef DEBUG_THREADS + GC_log_printf("Stack for thread %p = [%p,%p)\n", + (void *)p->id, (void *)lo, (void *)hi); +# endif + if (0 == lo) ABORT("GC_push_all_stacks: sp not set!"); + if (p->altstack != NULL && (word)p->altstack <= (word)lo + && (word)lo <= (word)p->altstack + p->altstack_size) { + hi = p->altstack + p->altstack_size; + /* FIXME: Need to scan the normal stack too, but how ? */ + /* FIXME: Assume stack grows down */ + } + GC_push_all_stack_sections(lo, hi, traced_stack_sect); +# ifdef STACK_GROWS_UP + total_size += lo - hi; +# else + total_size += hi - lo; /* lo <= hi */ +# endif +# ifdef NACL + /* Push reg_storage as roots, this will cover the reg context. */ + GC_push_all_stack((ptr_t)p -> stop_info.reg_storage, + (ptr_t)(p -> stop_info.reg_storage + NACL_GC_REG_STORAGE_SIZE)); + total_size += NACL_GC_REG_STORAGE_SIZE * sizeof(ptr_t); +# endif +# ifdef IA64 +# ifdef DEBUG_THREADS + GC_log_printf("Reg stack for thread %p = [%p,%p)\n", + (void *)p->id, (void *)bs_lo, (void *)bs_hi); +# endif + /* FIXME: This (if p->id==self) may add an unbounded number of */ + /* entries, and hence overflow the mark stack, which is bad. */ + GC_push_all_register_sections(bs_lo, bs_hi, + THREAD_EQUAL(p -> id, self), + traced_stack_sect); + total_size += bs_hi - bs_lo; /* bs_lo <= bs_hi */ +# endif + } + } + GC_VERBOSE_LOG_PRINTF("Pushed %d thread stacks\n", (int)nthreads); + if (!found_me && !GC_in_thread_creation) + ABORT("Collecting from unknown thread"); + GC_total_stacksize = total_size; +} + +#ifdef DEBUG_THREADS + /* There seems to be a very rare thread stopping problem. To help us */ + /* debug that, we save the ids of the stopping thread. */ + pthread_t GC_stopping_thread; + int GC_stopping_pid = 0; +#endif + +/* We hold the allocation lock. Suspend all threads that might */ +/* still be running. Return the number of suspend signals that */ +/* were sent. */ +STATIC int GC_suspend_all(void) +{ + int n_live_threads = 0; + int i; +# ifndef NACL + GC_thread p; +# ifndef GC_OPENBSD_UTHREADS + int result; +# endif + pthread_t self = pthread_self(); + +# ifdef DEBUG_THREADS + GC_stopping_thread = self; + GC_stopping_pid = getpid(); +# endif + for (i = 0; i < THREAD_TABLE_SZ; i++) { + for (p = GC_threads[i]; p != 0; p = p -> next) { + if (!THREAD_EQUAL(p -> id, self)) { + if ((p -> flags & FINISHED) != 0) continue; + if (p -> thread_blocked) /* Will wait */ continue; +# ifndef GC_OPENBSD_UTHREADS +# ifdef GC_ENABLE_SUSPEND_THREAD + if (p -> suspended_ext) continue; +# endif + if (AO_load(&p->stop_info.last_stop_count) == GC_stop_count) + continue; + n_live_threads++; +# endif +# ifdef DEBUG_THREADS + GC_log_printf("Sending suspend signal to %p\n", (void *)p->id); +# endif + +# ifdef GC_OPENBSD_UTHREADS + { + stack_t stack; + if (pthread_suspend_np(p -> id) != 0) + ABORT("pthread_suspend_np failed"); + if (pthread_stackseg_np(p->id, &stack)) + ABORT("pthread_stackseg_np failed"); + p -> stop_info.stack_ptr = (ptr_t)stack.ss_sp - stack.ss_size; + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_SUSPENDED, + (void *)p->id); + } +# else + result = RAISE_SIGNAL(p, GC_sig_suspend); + switch(result) { + case ESRCH: + /* Not really there anymore. Possible? */ + n_live_threads--; + break; + case 0: + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_SUSPENDED, + (void *)(word)THREAD_SYSTEM_ID(p)); + /* Note: thread id might be truncated. */ + break; + default: + ABORT_ARG1("pthread_kill failed at suspend", + ": errcode= %d", result); + } +# endif + } + } + } + +# else /* NACL */ +# ifndef NACL_PARK_WAIT_NANOSECONDS +# define NACL_PARK_WAIT_NANOSECONDS (100 * 1000) +# endif +# define NANOS_PER_SECOND (1000UL * 1000 * 1000) + unsigned long num_sleeps = 0; + +# ifdef DEBUG_THREADS + GC_log_printf("pthread_stop_world: num_threads %d\n", + GC_nacl_num_gc_threads - 1); +# endif + GC_nacl_thread_parker = pthread_self(); + GC_nacl_park_threads_now = 1; +# ifdef DEBUG_THREADS + GC_stopping_thread = GC_nacl_thread_parker; + GC_stopping_pid = getpid(); +# endif + + while (1) { + int num_threads_parked = 0; + struct timespec ts; + int num_used = 0; + + /* Check the 'parked' flag for each thread the GC knows about. */ + for (i = 0; i < MAX_NACL_GC_THREADS + && num_used < GC_nacl_num_gc_threads; i++) { + if (GC_nacl_thread_used[i] == 1) { + num_used++; + if (GC_nacl_thread_parked[i] == 1) { + num_threads_parked++; + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_SUSPENDED, (void *)(word)i); + } + } + } + /* -1 for the current thread. */ + if (num_threads_parked >= GC_nacl_num_gc_threads - 1) + break; + ts.tv_sec = 0; + ts.tv_nsec = NACL_PARK_WAIT_NANOSECONDS; +# ifdef DEBUG_THREADS + GC_log_printf("Sleep waiting for %d threads to park...\n", + GC_nacl_num_gc_threads - num_threads_parked - 1); +# endif + /* This requires _POSIX_TIMERS feature. */ + nanosleep(&ts, 0); + if (++num_sleeps > NANOS_PER_SECOND / NACL_PARK_WAIT_NANOSECONDS) { + WARN("GC appears stalled waiting for %" WARN_PRIdPTR + " threads to park...\n", + GC_nacl_num_gc_threads - num_threads_parked - 1); + num_sleeps = 0; + } + } +# endif /* NACL */ + return n_live_threads; +} + +GC_INNER void GC_stop_world(void) +{ +# if !defined(GC_OPENBSD_UTHREADS) && !defined(NACL) + int i; + int n_live_threads; + int code; +# endif + GC_ASSERT(I_HOLD_LOCK()); +# ifdef DEBUG_THREADS + GC_log_printf("Stopping the world from %p\n", (void *)pthread_self()); +# endif + + /* Make sure all free list construction has stopped before we start. */ + /* No new construction can start, since free list construction is */ + /* required to acquire and release the GC lock before it starts, */ + /* and we have the lock. */ +# ifdef PARALLEL_MARK + if (GC_parallel) { + GC_acquire_mark_lock(); + GC_ASSERT(GC_fl_builder_count == 0); + /* We should have previously waited for it to become zero. */ + } +# endif /* PARALLEL_MARK */ + +# if defined(GC_OPENBSD_UTHREADS) || defined(NACL) + (void)GC_suspend_all(); +# else + AO_store(&GC_stop_count, GC_stop_count+1); + /* Only concurrent reads are possible. */ + AO_store_release(&GC_world_is_stopped, TRUE); + n_live_threads = GC_suspend_all(); + + if (GC_retry_signals) { + unsigned long wait_usecs = 0; /* Total wait since retry. */ +# define WAIT_UNIT 3000 +# define RETRY_INTERVAL 100000 + for (;;) { + int ack_count; + + sem_getvalue(&GC_suspend_ack_sem, &ack_count); + if (ack_count == n_live_threads) break; + if (wait_usecs > RETRY_INTERVAL) { + int newly_sent = GC_suspend_all(); + + GC_COND_LOG_PRINTF("Resent %d signals after timeout\n", newly_sent); + sem_getvalue(&GC_suspend_ack_sem, &ack_count); + if (newly_sent < n_live_threads - ack_count) { + WARN("Lost some threads during GC_stop_world?!\n",0); + n_live_threads = ack_count + newly_sent; + } + wait_usecs = 0; + } + +# ifdef LINT2 + /* Workaround "waiting while holding a lock" warning. */ +# undef WAIT_UNIT +# define WAIT_UNIT 1 + sched_yield(); +# elif defined(CPPCHECK) /* || _POSIX_C_SOURCE >= 199309L */ + { + struct timespec ts; + + ts.tv_sec = 0; + ts.tv_nsec = WAIT_UNIT * 1000; + (void)nanosleep(&ts, NULL); + } +# else + usleep(WAIT_UNIT); +# endif + wait_usecs += WAIT_UNIT; + } + } + + for (i = 0; i < n_live_threads; i++) { + retry: + code = sem_wait(&GC_suspend_ack_sem); + if (0 != code) { + /* On Linux, sem_wait is documented to always return zero. */ + /* But the documentation appears to be incorrect. */ + if (errno == EINTR) { + /* Seems to happen with some versions of gdb. */ + goto retry; + } + ABORT("sem_wait for handler failed"); + } + } +# endif + +# ifdef PARALLEL_MARK + if (GC_parallel) + GC_release_mark_lock(); +# endif +# ifdef DEBUG_THREADS + GC_log_printf("World stopped from %p\n", (void *)pthread_self()); + GC_stopping_thread = 0; +# endif +} + +#ifdef NACL +# if defined(__x86_64__) +# define NACL_STORE_REGS() \ + do { \ + __asm__ __volatile__ ("push %rbx"); \ + __asm__ __volatile__ ("push %rbp"); \ + __asm__ __volatile__ ("push %r12"); \ + __asm__ __volatile__ ("push %r13"); \ + __asm__ __volatile__ ("push %r14"); \ + __asm__ __volatile__ ("push %r15"); \ + __asm__ __volatile__ ("mov %%esp, %0" \ + : "=m" (GC_nacl_gc_thread_self->stop_info.stack_ptr)); \ + BCOPY(GC_nacl_gc_thread_self->stop_info.stack_ptr, \ + GC_nacl_gc_thread_self->stop_info.reg_storage, \ + NACL_GC_REG_STORAGE_SIZE * sizeof(ptr_t)); \ + __asm__ __volatile__ ("naclasp $48, %r15"); \ + } while (0) +# elif defined(__i386__) +# define NACL_STORE_REGS() \ + do { \ + __asm__ __volatile__ ("push %ebx"); \ + __asm__ __volatile__ ("push %ebp"); \ + __asm__ __volatile__ ("push %esi"); \ + __asm__ __volatile__ ("push %edi"); \ + __asm__ __volatile__ ("mov %%esp, %0" \ + : "=m" (GC_nacl_gc_thread_self->stop_info.stack_ptr)); \ + BCOPY(GC_nacl_gc_thread_self->stop_info.stack_ptr, \ + GC_nacl_gc_thread_self->stop_info.reg_storage, \ + NACL_GC_REG_STORAGE_SIZE * sizeof(ptr_t));\ + __asm__ __volatile__ ("add $16, %esp"); \ + } while (0) +# elif defined(__arm__) +# define NACL_STORE_REGS() \ + do { \ + __asm__ __volatile__ ("push {r4-r8,r10-r12,lr}"); \ + __asm__ __volatile__ ("mov r0, %0" \ + : : "r" (&GC_nacl_gc_thread_self->stop_info.stack_ptr)); \ + __asm__ __volatile__ ("bic r0, r0, #0xc0000000"); \ + __asm__ __volatile__ ("str sp, [r0]"); \ + BCOPY(GC_nacl_gc_thread_self->stop_info.stack_ptr, \ + GC_nacl_gc_thread_self->stop_info.reg_storage, \ + NACL_GC_REG_STORAGE_SIZE * sizeof(ptr_t)); \ + __asm__ __volatile__ ("add sp, sp, #40"); \ + __asm__ __volatile__ ("bic sp, sp, #0xc0000000"); \ + } while (0) +# else +# error TODO Please port NACL_STORE_REGS +# endif + + GC_API_OSCALL void nacl_pre_syscall_hook(void) + { + if (GC_nacl_thread_idx != -1) { + NACL_STORE_REGS(); + GC_nacl_gc_thread_self->stop_info.stack_ptr = GC_approx_sp(); + GC_nacl_thread_parked[GC_nacl_thread_idx] = 1; + } + } + + GC_API_OSCALL void __nacl_suspend_thread_if_needed(void) + { + if (GC_nacl_park_threads_now) { + pthread_t self = pthread_self(); + + /* Don't try to park the thread parker. */ + if (GC_nacl_thread_parker == self) + return; + + /* This can happen when a thread is created outside of the GC */ + /* system (wthread mostly). */ + if (GC_nacl_thread_idx < 0) + return; + + /* If it was already 'parked', we're returning from a syscall, */ + /* so don't bother storing registers again, the GC has a set. */ + if (!GC_nacl_thread_parked[GC_nacl_thread_idx]) { + NACL_STORE_REGS(); + GC_nacl_gc_thread_self->stop_info.stack_ptr = GC_approx_sp(); + } + GC_nacl_thread_parked[GC_nacl_thread_idx] = 1; + while (GC_nacl_park_threads_now) { + /* Just spin. */ + } + GC_nacl_thread_parked[GC_nacl_thread_idx] = 0; + + /* Clear out the reg storage for next suspend. */ + BZERO(GC_nacl_gc_thread_self->stop_info.reg_storage, + NACL_GC_REG_STORAGE_SIZE * sizeof(ptr_t)); + } + } + + GC_API_OSCALL void nacl_post_syscall_hook(void) + { + /* Calling __nacl_suspend_thread_if_needed right away should */ + /* guarantee we don't mutate the GC set. */ + __nacl_suspend_thread_if_needed(); + if (GC_nacl_thread_idx != -1) { + GC_nacl_thread_parked[GC_nacl_thread_idx] = 0; + } + } + + STATIC GC_bool GC_nacl_thread_parking_inited = FALSE; + STATIC pthread_mutex_t GC_nacl_thread_alloc_lock = PTHREAD_MUTEX_INITIALIZER; + + struct nacl_irt_blockhook { + int (*register_block_hooks)(void (*pre)(void), void (*post)(void)); + }; + + extern size_t nacl_interface_query(const char *interface_ident, + void *table, size_t tablesize); + + GC_INNER void GC_nacl_initialize_gc_thread(void) + { + int i; + static struct nacl_irt_blockhook gc_hook; + + pthread_mutex_lock(&GC_nacl_thread_alloc_lock); + if (!EXPECT(GC_nacl_thread_parking_inited, TRUE)) { + BZERO(GC_nacl_thread_parked, sizeof(GC_nacl_thread_parked)); + BZERO(GC_nacl_thread_used, sizeof(GC_nacl_thread_used)); + /* TODO: replace with public 'register hook' function when */ + /* available from glibc. */ + nacl_interface_query("nacl-irt-blockhook-0.1", + &gc_hook, sizeof(gc_hook)); + gc_hook.register_block_hooks(nacl_pre_syscall_hook, + nacl_post_syscall_hook); + GC_nacl_thread_parking_inited = TRUE; + } + GC_ASSERT(GC_nacl_num_gc_threads <= MAX_NACL_GC_THREADS); + for (i = 0; i < MAX_NACL_GC_THREADS; i++) { + if (GC_nacl_thread_used[i] == 0) { + GC_nacl_thread_used[i] = 1; + GC_nacl_thread_idx = i; + GC_nacl_num_gc_threads++; + break; + } + } + pthread_mutex_unlock(&GC_nacl_thread_alloc_lock); + } + + GC_INNER void GC_nacl_shutdown_gc_thread(void) + { + pthread_mutex_lock(&GC_nacl_thread_alloc_lock); + GC_ASSERT(GC_nacl_thread_idx >= 0); + GC_ASSERT(GC_nacl_thread_idx < MAX_NACL_GC_THREADS); + GC_ASSERT(GC_nacl_thread_used[GC_nacl_thread_idx] != 0); + GC_nacl_thread_used[GC_nacl_thread_idx] = 0; + GC_nacl_thread_idx = -1; + GC_nacl_num_gc_threads--; + pthread_mutex_unlock(&GC_nacl_thread_alloc_lock); + } +#endif /* NACL */ + +/* Caller holds allocation lock, and has held it continuously since */ +/* the world stopped. */ +GC_INNER void GC_start_world(void) +{ +# ifndef NACL + pthread_t self = pthread_self(); + register int i; + register GC_thread p; +# ifndef GC_OPENBSD_UTHREADS + register int n_live_threads = 0; + register int result; +# endif + +# ifdef DEBUG_THREADS + GC_log_printf("World starting\n"); +# endif + +# ifndef GC_OPENBSD_UTHREADS + AO_store_release(&GC_world_is_stopped, FALSE); + /* The updated value should now be visible to the */ + /* signal handler (note that pthread_kill is not on */ + /* the list of functions which synchronize memory). */ +# endif + for (i = 0; i < THREAD_TABLE_SZ; i++) { + for (p = GC_threads[i]; p != 0; p = p -> next) { + if (!THREAD_EQUAL(p -> id, self)) { + if ((p -> flags & FINISHED) != 0) continue; + if (p -> thread_blocked) continue; +# ifndef GC_OPENBSD_UTHREADS +# ifdef GC_ENABLE_SUSPEND_THREAD + if (p -> suspended_ext) continue; +# endif + n_live_threads++; +# endif +# ifdef DEBUG_THREADS + GC_log_printf("Sending restart signal to %p\n", (void *)p->id); +# endif + +# ifdef GC_OPENBSD_UTHREADS + if (pthread_resume_np(p -> id) != 0) + ABORT("pthread_resume_np failed"); + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_UNSUSPENDED, (void *)p->id); +# else + result = RAISE_SIGNAL(p, GC_sig_thr_restart); + switch(result) { + case ESRCH: + /* Not really there anymore. Possible? */ + n_live_threads--; + break; + case 0: + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_UNSUSPENDED, + (void *)(word)THREAD_SYSTEM_ID(p)); + break; + default: + ABORT_ARG1("pthread_kill failed at resume", + ": errcode= %d", result); + } +# endif + } + } + } +# ifdef GC_NETBSD_THREADS_WORKAROUND + for (i = 0; i < n_live_threads; i++) { + while (0 != sem_wait(&GC_restart_ack_sem)) { + if (errno != EINTR) { + ABORT_ARG1("sem_wait() for restart handler failed", + ": errcode= %d", errno); + } + } + } +# endif +# ifdef DEBUG_THREADS + GC_log_printf("World started\n"); +# endif +# else /* NACL */ +# ifdef DEBUG_THREADS + GC_log_printf("World starting...\n"); +# endif + GC_nacl_park_threads_now = 0; + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_UNSUSPENDED, NULL); + /* TODO: Send event for every unsuspended thread. */ +# endif +} + +GC_INNER void GC_stop_init(void) +{ +# if !defined(GC_OPENBSD_UTHREADS) && !defined(NACL) + struct sigaction act; + + if (SIGNAL_UNSET == GC_sig_suspend) + GC_sig_suspend = SIG_SUSPEND; + if (SIGNAL_UNSET == GC_sig_thr_restart) + GC_sig_thr_restart = SIG_THR_RESTART; + if (GC_sig_suspend == GC_sig_thr_restart) + ABORT("Cannot use same signal for thread suspend and resume"); + + if (sem_init(&GC_suspend_ack_sem, GC_SEM_INIT_PSHARED, 0) != 0) + ABORT("sem_init failed"); +# ifdef GC_NETBSD_THREADS_WORKAROUND + if (sem_init(&GC_restart_ack_sem, GC_SEM_INIT_PSHARED, 0) != 0) + ABORT("sem_init failed"); +# endif + +# ifdef SA_RESTART + act.sa_flags = SA_RESTART +# else + act.sa_flags = 0 +# endif +# ifndef NO_SA_SIGACTION + | SA_SIGINFO +# endif + ; + if (sigfillset(&act.sa_mask) != 0) { + ABORT("sigfillset failed"); + } +# ifdef GC_RTEMS_PTHREADS + if(sigprocmask(SIG_UNBLOCK, &act.sa_mask, NULL) != 0) { + ABORT("sigprocmask failed"); + } +# endif + GC_remove_allowed_signals(&act.sa_mask); + /* GC_sig_thr_restart is set in the resulting mask. */ + /* It is unmasked by the handler when necessary. */ +# ifndef NO_SA_SIGACTION + act.sa_sigaction = GC_suspend_handler; +# else + act.sa_handler = GC_suspend_handler; +# endif + /* act.sa_restorer is deprecated and should not be initialized. */ + if (sigaction(GC_sig_suspend, &act, NULL) != 0) { + ABORT("Cannot set SIG_SUSPEND handler"); + } + +# ifndef NO_SA_SIGACTION + act.sa_flags &= ~SA_SIGINFO; +# endif + act.sa_handler = GC_restart_handler; + if (sigaction(GC_sig_thr_restart, &act, NULL) != 0) { + ABORT("Cannot set SIG_THR_RESTART handler"); + } + + /* Initialize suspend_handler_mask (excluding GC_sig_thr_restart). */ + if (sigfillset(&suspend_handler_mask) != 0) ABORT("sigfillset failed"); + GC_remove_allowed_signals(&suspend_handler_mask); + if (sigdelset(&suspend_handler_mask, GC_sig_thr_restart) != 0) + ABORT("sigdelset failed"); + + /* Check for GC_RETRY_SIGNALS. */ + if (0 != GETENV("GC_RETRY_SIGNALS")) { + GC_retry_signals = TRUE; + } + if (0 != GETENV("GC_NO_RETRY_SIGNALS")) { + GC_retry_signals = FALSE; + } + if (GC_retry_signals) { + GC_COND_LOG_PRINTF("Will retry suspend signal if necessary\n"); + } +# endif /* !GC_OPENBSD_UTHREADS && !NACL */ +} + +#endif /* GC_PTHREADS && !GC_DARWIN_THREADS && !GC_WIN32_THREADS */ diff --git a/pthread_support.c b/pthread_support.c new file mode 100644 index 0000000..335e6eb --- /dev/null +++ b/pthread_support.c @@ -0,0 +1,2225 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2005 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/pthread_support.h" + +/* + * Support code originally for LinuxThreads, the clone()-based kernel + * thread package for Linux which is included in libc6. + * + * This code no doubt makes some assumptions beyond what is + * guaranteed by the pthread standard, though it now does + * very little of that. It now also supports NPTL, and many + * other Posix thread implementations. We are trying to merge + * all flavors of pthread support code into this file. + */ + +#if defined(GC_PTHREADS) && !defined(GC_WIN32_THREADS) + +# include +# include +# include +# include +# include +# include +# if !defined(GC_RTEMS_PTHREADS) +# include +# endif +# include +# include +# include +# include +# include + +# include "gc_inline.h" + +#if defined(GC_DARWIN_THREADS) +# include "private/darwin_semaphore.h" +#else +# include +#endif /* !GC_DARWIN_THREADS */ + +#if defined(GC_DARWIN_THREADS) || defined(GC_FREEBSD_THREADS) +# include +#endif /* GC_DARWIN_THREADS */ + +#if defined(GC_NETBSD_THREADS) || defined(GC_OPENBSD_THREADS) +# include +# include +#endif /* GC_NETBSD_THREADS */ + +/* Allocator lock definitions. */ +#if !defined(USE_SPIN_LOCK) + GC_INNER pthread_mutex_t GC_allocate_ml = PTHREAD_MUTEX_INITIALIZER; +#endif + +#ifdef GC_ASSERTIONS + GC_INNER unsigned long GC_lock_holder = NO_THREAD; + /* Used only for assertions. */ +#endif + +#if defined(GC_DGUX386_THREADS) +# include +# include + /* sem_t is an uint in DG/UX */ + typedef unsigned int sem_t; +#endif /* GC_DGUX386_THREADS */ + +/* Undefine macros used to redirect pthread primitives. */ +# undef pthread_create +# ifndef GC_NO_PTHREAD_SIGMASK +# undef pthread_sigmask +# endif +# ifndef GC_NO_PTHREAD_CANCEL +# undef pthread_cancel +# endif +# ifdef GC_HAVE_PTHREAD_EXIT +# undef pthread_exit +# endif +# undef pthread_join +# undef pthread_detach +# if defined(GC_OSF1_THREADS) && defined(_PTHREAD_USE_MANGLED_NAMES_) \ + && !defined(_PTHREAD_USE_PTDNAM_) + /* Restore the original mangled names on Tru64 UNIX. */ +# define pthread_create __pthread_create +# define pthread_join __pthread_join +# define pthread_detach __pthread_detach +# ifndef GC_NO_PTHREAD_CANCEL +# define pthread_cancel __pthread_cancel +# endif +# ifdef GC_HAVE_PTHREAD_EXIT +# define pthread_exit __pthread_exit +# endif +# endif + +#ifdef GC_USE_LD_WRAP +# define WRAP_FUNC(f) __wrap_##f +# define REAL_FUNC(f) __real_##f + int REAL_FUNC(pthread_create)(pthread_t *, + GC_PTHREAD_CREATE_CONST pthread_attr_t *, + void *(*start_routine)(void *), void *); + int REAL_FUNC(pthread_join)(pthread_t, void **); + int REAL_FUNC(pthread_detach)(pthread_t); +# ifndef GC_NO_PTHREAD_SIGMASK + int REAL_FUNC(pthread_sigmask)(int, const sigset_t *, sigset_t *); +# endif +# ifndef GC_NO_PTHREAD_CANCEL + int REAL_FUNC(pthread_cancel)(pthread_t); +# endif +# ifdef GC_HAVE_PTHREAD_EXIT + void REAL_FUNC(pthread_exit)(void *) GC_PTHREAD_EXIT_ATTRIBUTE; +# endif +#else +# ifdef GC_USE_DLOPEN_WRAP +# include +# define WRAP_FUNC(f) f +# define REAL_FUNC(f) GC_real_##f + /* We define both GC_f and plain f to be the wrapped function. */ + /* In that way plain calls work, as do calls from files that */ + /* included gc.h, which redefined f to GC_f. */ + /* FIXME: Needs work for DARWIN and True64 (OSF1) */ + typedef int (* GC_pthread_create_t)(pthread_t *, + GC_PTHREAD_CREATE_CONST pthread_attr_t *, + void * (*)(void *), void *); + static GC_pthread_create_t REAL_FUNC(pthread_create); +# ifndef GC_NO_PTHREAD_SIGMASK + typedef int (* GC_pthread_sigmask_t)(int, const sigset_t *, + sigset_t *); + static GC_pthread_sigmask_t REAL_FUNC(pthread_sigmask); +# endif + typedef int (* GC_pthread_join_t)(pthread_t, void **); + static GC_pthread_join_t REAL_FUNC(pthread_join); + typedef int (* GC_pthread_detach_t)(pthread_t); + static GC_pthread_detach_t REAL_FUNC(pthread_detach); +# ifndef GC_NO_PTHREAD_CANCEL + typedef int (* GC_pthread_cancel_t)(pthread_t); + static GC_pthread_cancel_t REAL_FUNC(pthread_cancel); +# endif +# ifdef GC_HAVE_PTHREAD_EXIT + typedef void (* GC_pthread_exit_t)(void *) GC_PTHREAD_EXIT_ATTRIBUTE; + static GC_pthread_exit_t REAL_FUNC(pthread_exit); +# endif +# else +# define WRAP_FUNC(f) GC_##f +# if !defined(GC_DGUX386_THREADS) +# define REAL_FUNC(f) f +# else /* GC_DGUX386_THREADS */ +# define REAL_FUNC(f) __d10_##f +# endif /* GC_DGUX386_THREADS */ +# endif +#endif + +#if defined(GC_USE_LD_WRAP) || defined(GC_USE_DLOPEN_WRAP) + /* Define GC_ functions as aliases for the plain ones, which will */ + /* be intercepted. This allows files which include gc.h, and hence */ + /* generate references to the GC_ symbols, to see the right symbols. */ + GC_API int GC_pthread_create(pthread_t * t, + GC_PTHREAD_CREATE_CONST pthread_attr_t *a, + void * (* fn)(void *), void * arg) + { + return pthread_create(t, a, fn, arg); + } + +# ifndef GC_NO_PTHREAD_SIGMASK + GC_API int GC_pthread_sigmask(int how, const sigset_t *mask, + sigset_t *old) + { + return pthread_sigmask(how, mask, old); + } +# endif /* !GC_NO_PTHREAD_SIGMASK */ + + GC_API int GC_pthread_join(pthread_t t, void **res) + { + return pthread_join(t, res); + } + + GC_API int GC_pthread_detach(pthread_t t) + { + return pthread_detach(t); + } + +# ifndef GC_NO_PTHREAD_CANCEL + GC_API int GC_pthread_cancel(pthread_t t) + { + return pthread_cancel(t); + } +# endif /* !GC_NO_PTHREAD_CANCEL */ + +# ifdef GC_HAVE_PTHREAD_EXIT + GC_API GC_PTHREAD_EXIT_ATTRIBUTE void GC_pthread_exit(void *retval) + { + pthread_exit(retval); + } +# endif +#endif /* Linker-based interception. */ + +#ifdef GC_USE_DLOPEN_WRAP + STATIC GC_bool GC_syms_initialized = FALSE; + + STATIC void GC_init_real_syms(void) + { + void *dl_handle; + + if (GC_syms_initialized) return; +# ifdef RTLD_NEXT + dl_handle = RTLD_NEXT; +# else + dl_handle = dlopen("libpthread.so.0", RTLD_LAZY); + if (NULL == dl_handle) { + dl_handle = dlopen("libpthread.so", RTLD_LAZY); /* without ".0" */ + } + if (NULL == dl_handle) ABORT("Couldn't open libpthread"); +# endif + REAL_FUNC(pthread_create) = (GC_pthread_create_t)(word) + dlsym(dl_handle, "pthread_create"); +# ifdef RTLD_NEXT + if (REAL_FUNC(pthread_create) == 0) + ABORT("pthread_create not found" + " (probably -lgc is specified after -lpthread)"); +# endif +# ifndef GC_NO_PTHREAD_SIGMASK + REAL_FUNC(pthread_sigmask) = (GC_pthread_sigmask_t)(word) + dlsym(dl_handle, "pthread_sigmask"); +# endif + REAL_FUNC(pthread_join) = (GC_pthread_join_t)(word) + dlsym(dl_handle, "pthread_join"); + REAL_FUNC(pthread_detach) = (GC_pthread_detach_t)(word) + dlsym(dl_handle, "pthread_detach"); +# ifndef GC_NO_PTHREAD_CANCEL + REAL_FUNC(pthread_cancel) = (GC_pthread_cancel_t)(word) + dlsym(dl_handle, "pthread_cancel"); +# endif +# ifdef GC_HAVE_PTHREAD_EXIT + REAL_FUNC(pthread_exit) = (GC_pthread_exit_t)(word) + dlsym(dl_handle, "pthread_exit"); +# endif + GC_syms_initialized = TRUE; + } + +# define INIT_REAL_SYMS() if (EXPECT(GC_syms_initialized, TRUE)) {} \ + else GC_init_real_syms() +#else +# define INIT_REAL_SYMS() (void)0 +#endif + +static GC_bool parallel_initialized = FALSE; + +#ifndef GC_ALWAYS_MULTITHREADED + GC_INNER GC_bool GC_need_to_lock = FALSE; +#endif + +STATIC int GC_nprocs = 1; + /* Number of processors. We may not have */ + /* access to all of them, but this is as good */ + /* a guess as any ... */ + +#ifdef THREAD_LOCAL_ALLOC + /* We must explicitly mark ptrfree and gcj free lists, since the free */ + /* list links wouldn't otherwise be found. We also set them in the */ + /* normal free lists, since that involves touching less memory than */ + /* if we scanned them normally. */ + GC_INNER void GC_mark_thread_local_free_lists(void) + { + int i; + GC_thread p; + + for (i = 0; i < THREAD_TABLE_SZ; ++i) { + for (p = GC_threads[i]; 0 != p; p = p -> next) { + if (!(p -> flags & FINISHED)) + GC_mark_thread_local_fls_for(&(p->tlfs)); + } + } + } + +# if defined(GC_ASSERTIONS) + void GC_check_tls_for(GC_tlfs p); +# if defined(USE_CUSTOM_SPECIFIC) + void GC_check_tsd_marks(tsd *key); +# endif + + /* Check that all thread-local free-lists are completely marked. */ + /* Also check that thread-specific-data structures are marked. */ + void GC_check_tls(void) + { + int i; + GC_thread p; + + for (i = 0; i < THREAD_TABLE_SZ; ++i) { + for (p = GC_threads[i]; 0 != p; p = p -> next) { + if (!(p -> flags & FINISHED)) + GC_check_tls_for(&(p->tlfs)); + } + } +# if defined(USE_CUSTOM_SPECIFIC) + if (GC_thread_key != 0) + GC_check_tsd_marks(GC_thread_key); +# endif + } +# endif /* GC_ASSERTIONS */ + +#endif /* THREAD_LOCAL_ALLOC */ + +#ifdef PARALLEL_MARK + +# ifndef MAX_MARKERS +# define MAX_MARKERS 16 +# endif + +static ptr_t marker_sp[MAX_MARKERS - 1] = {0}; +#ifdef IA64 + static ptr_t marker_bsp[MAX_MARKERS - 1] = {0}; +#endif + +#if defined(GC_DARWIN_THREADS) && !defined(GC_NO_THREADS_DISCOVERY) + static mach_port_t marker_mach_threads[MAX_MARKERS - 1] = {0}; + + /* Used only by GC_suspend_thread_list(). */ + GC_INNER GC_bool GC_is_mach_marker(thread_act_t thread) + { + int i; + for (i = 0; i < GC_markers_m1; i++) { + if (marker_mach_threads[i] == thread) + return TRUE; + } + return FALSE; + } +#endif /* GC_DARWIN_THREADS */ + +STATIC void * GC_mark_thread(void * id) +{ + word my_mark_no = 0; + IF_CANCEL(int cancel_state;) + + if ((word)id == (word)-1) return 0; /* to make compiler happy */ + DISABLE_CANCEL(cancel_state); + /* Mark threads are not cancellable; they */ + /* should be invisible to client. */ + marker_sp[(word)id] = GC_approx_sp(); +# ifdef IA64 + marker_bsp[(word)id] = GC_save_regs_in_stack(); +# endif +# if defined(GC_DARWIN_THREADS) && !defined(GC_NO_THREADS_DISCOVERY) + marker_mach_threads[(word)id] = mach_thread_self(); +# endif + + /* Inform GC_start_mark_threads about completion of marker data init. */ + GC_acquire_mark_lock(); + if (0 == --GC_fl_builder_count) /* count may have a negative value */ + GC_notify_all_builder(); + + for (;; ++my_mark_no) { + /* GC_mark_no is passed only to allow GC_help_marker to terminate */ + /* promptly. This is important if it were called from the signal */ + /* handler or from the GC lock acquisition code. Under Linux, it's */ + /* not safe to call it from a signal handler, since it uses mutexes */ + /* and condition variables. Since it is called only here, the */ + /* argument is unnecessary. */ + if (my_mark_no < GC_mark_no || my_mark_no > GC_mark_no + 2) { + /* resynchronize if we get far off, e.g. because GC_mark_no */ + /* wrapped. */ + my_mark_no = GC_mark_no; + } +# ifdef DEBUG_THREADS + GC_log_printf("Starting mark helper for mark number %lu\n", + (unsigned long)my_mark_no); +# endif + GC_help_marker(my_mark_no); + } +} + +STATIC pthread_t GC_mark_threads[MAX_MARKERS]; + +#ifdef CAN_HANDLE_FORK + static int available_markers_m1 = 0; + static pthread_cond_t mark_cv; + /* initialized by GC_start_mark_threads_inner */ +#else +# define available_markers_m1 GC_markers_m1 + static pthread_cond_t mark_cv = PTHREAD_COND_INITIALIZER; +#endif + +GC_INNER void GC_start_mark_threads_inner(void) +{ + int i; + pthread_attr_t attr; +# ifndef NO_MARKER_SPECIAL_SIGMASK + sigset_t set, oldset; +# endif + + GC_ASSERT(I_DONT_HOLD_LOCK()); + if (available_markers_m1 <= 0) return; + /* Skip if parallel markers disabled or already started. */ +# ifdef CAN_HANDLE_FORK + if (GC_parallel) return; + + /* Initialize mark_cv (for the first time), or cleanup its value */ + /* after forking in the child process. All the marker threads in */ + /* the parent process were blocked on this variable at fork, so */ + /* pthread_cond_wait() malfunction (hang) is possible in the */ + /* child process without such a cleanup. */ + /* TODO: This is not portable, it is better to shortly unblock */ + /* all marker threads in the parent process at fork. */ + { + pthread_cond_t mark_cv_local = PTHREAD_COND_INITIALIZER; + BCOPY(&mark_cv_local, &mark_cv, sizeof(mark_cv)); + } +# endif + + GC_ASSERT(GC_fl_builder_count == 0); + INIT_REAL_SYMS(); /* for pthread_create */ + if (0 != pthread_attr_init(&attr)) ABORT("pthread_attr_init failed"); + if (0 != pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED)) + ABORT("pthread_attr_setdetachstate failed"); + +# ifdef DEFAULT_STACK_MAYBE_SMALL + /* Default stack size is usually too small: increase it. */ + /* Otherwise marker threads or GC may run out of space. */ + { + size_t old_size; + + if (pthread_attr_getstacksize(&attr, &old_size) != 0) + ABORT("pthread_attr_getstacksize failed"); + if (old_size < MIN_STACK_SIZE + && old_size != 0 /* stack size is known */) { + if (pthread_attr_setstacksize(&attr, MIN_STACK_SIZE) != 0) + ABORT("pthread_attr_setstacksize failed"); + } + } +# endif /* DEFAULT_STACK_MAYBE_SMALL */ + +# ifndef NO_MARKER_SPECIAL_SIGMASK + /* Apply special signal mask to GC marker threads, and don't drop */ + /* user defined signals by GC marker threads. */ + if (sigfillset(&set) != 0) + ABORT("sigfillset failed"); + +# if !defined(GC_DARWIN_THREADS) && !defined(GC_OPENBSD_UTHREADS) \ + && !defined(NACL) + /* These are used by GC to stop and restart the world. */ + if (sigdelset(&set, GC_get_suspend_signal()) != 0 + || sigdelset(&set, GC_get_thr_restart_signal()) != 0) + ABORT("sigdelset failed"); +# endif + + if (pthread_sigmask(SIG_BLOCK, &set, &oldset) < 0) { + WARN("pthread_sigmask set failed, no markers started," + " errno = %" WARN_PRIdPTR "\n", errno); + GC_markers_m1 = 0; + (void)pthread_attr_destroy(&attr); + return; + } +# endif /* !NO_MARKER_SPECIAL_SIGMASK */ + +# ifdef CAN_HANDLE_FORK + /* To have proper GC_parallel value in GC_help_marker. */ + GC_markers_m1 = available_markers_m1; +# endif + for (i = 0; i < available_markers_m1; ++i) { + if (0 != REAL_FUNC(pthread_create)(GC_mark_threads + i, &attr, + GC_mark_thread, (void *)(word)i)) { + WARN("Marker thread creation failed, errno = %" WARN_PRIdPTR "\n", + errno); + /* Don't try to create other marker threads. */ + GC_markers_m1 = i; + break; + } + } + +# ifndef NO_MARKER_SPECIAL_SIGMASK + /* Restore previous signal mask. */ + if (pthread_sigmask(SIG_SETMASK, &oldset, NULL) < 0) { + WARN("pthread_sigmask restore failed, errno = %" WARN_PRIdPTR "\n", + errno); + } +# endif + + (void)pthread_attr_destroy(&attr); + GC_wait_for_markers_init(); + GC_COND_LOG_PRINTF("Started %d mark helper threads\n", GC_markers_m1); +} + +#endif /* PARALLEL_MARK */ + +GC_INNER GC_bool GC_thr_initialized = FALSE; + +GC_INNER volatile GC_thread GC_threads[THREAD_TABLE_SZ] = {0}; + +void GC_push_thread_structures(void) +{ + GC_ASSERT(I_HOLD_LOCK()); + GC_PUSH_ALL_SYM(GC_threads); +# if defined(THREAD_LOCAL_ALLOC) + GC_PUSH_ALL_SYM(GC_thread_key); +# endif +} + +#ifdef DEBUG_THREADS + STATIC int GC_count_threads(void) + { + int i; + int count = 0; + GC_ASSERT(I_HOLD_LOCK()); + for (i = 0; i < THREAD_TABLE_SZ; ++i) { + GC_thread th = GC_threads[i]; + while (th) { + if (!(th->flags & FINISHED)) + ++count; + th = th->next; + } + } + return count; + } +#endif /* DEBUG_THREADS */ + +/* It may not be safe to allocate when we register the first thread. */ +static struct GC_Thread_Rep first_thread; + +#define THREAD_TABLE_INDEX(id) \ + (int)(((NUMERIC_THREAD_ID(id) >> 16) \ + ^ (NUMERIC_THREAD_ID(id) >> 8) \ + ^ NUMERIC_THREAD_ID(id)) % THREAD_TABLE_SZ) + +/* Add a thread to GC_threads. We assume it wasn't already there. */ +/* Caller holds allocation lock. */ +STATIC GC_thread GC_new_thread(pthread_t id) +{ + int hv = THREAD_TABLE_INDEX(id); + GC_thread result; + static GC_bool first_thread_used = FALSE; + +# ifdef DEBUG_THREADS + GC_log_printf("Creating thread %p\n", (void *)id); +# endif + GC_ASSERT(I_HOLD_LOCK()); + if (!EXPECT(first_thread_used, TRUE)) { + result = &first_thread; + first_thread_used = TRUE; + } else { + result = (struct GC_Thread_Rep *) + GC_INTERNAL_MALLOC(sizeof(struct GC_Thread_Rep), NORMAL); + if (result == 0) return(0); + } + result -> id = id; +# ifdef USE_TKILL_ON_ANDROID + result -> kernel_id = gettid(); +# endif + result -> next = GC_threads[hv]; + GC_threads[hv] = result; +# ifdef NACL + GC_nacl_gc_thread_self = result; + GC_nacl_initialize_gc_thread(); +# endif + GC_ASSERT(result -> flags == 0 && result -> thread_blocked == 0); + return(result); +} + +/* Delete a thread from GC_threads. We assume it is there. */ +/* (The code intentionally traps if it wasn't.) */ +/* It is safe to delete the main thread. */ +STATIC void GC_delete_thread(pthread_t id) +{ + int hv = THREAD_TABLE_INDEX(id); + register GC_thread p = GC_threads[hv]; + register GC_thread prev = 0; + +# ifdef DEBUG_THREADS + GC_log_printf("Deleting thread %p, n_threads = %d\n", + (void *)id, GC_count_threads()); +# endif + +# ifdef NACL + GC_nacl_shutdown_gc_thread(); + GC_nacl_gc_thread_self = NULL; +# endif + + GC_ASSERT(I_HOLD_LOCK()); + while (!THREAD_EQUAL(p -> id, id)) { + prev = p; + p = p -> next; + } + if (prev == 0) { + GC_threads[hv] = p -> next; + } else { + prev -> next = p -> next; + } + if (p != &first_thread) { +# ifdef GC_DARWIN_THREADS + mach_port_deallocate(mach_task_self(), p->stop_info.mach_thread); +# endif + GC_INTERNAL_FREE(p); + } +} + +/* If a thread has been joined, but we have not yet */ +/* been notified, then there may be more than one thread */ +/* in the table with the same pthread id. */ +/* This is OK, but we need a way to delete a specific one. */ +STATIC void GC_delete_gc_thread(GC_thread t) +{ + pthread_t id = t -> id; + int hv = THREAD_TABLE_INDEX(id); + register GC_thread p = GC_threads[hv]; + register GC_thread prev = 0; + + GC_ASSERT(I_HOLD_LOCK()); + while (p != t) { + prev = p; + p = p -> next; + } + if (prev == 0) { + GC_threads[hv] = p -> next; + } else { + prev -> next = p -> next; + } +# ifdef GC_DARWIN_THREADS + mach_port_deallocate(mach_task_self(), p->stop_info.mach_thread); +# endif + GC_INTERNAL_FREE(p); + +# ifdef DEBUG_THREADS + GC_log_printf("Deleted thread %p, n_threads = %d\n", + (void *)id, GC_count_threads()); +# endif +} + +/* Return a GC_thread corresponding to a given pthread_t. */ +/* Returns 0 if it's not there. */ +/* Caller holds allocation lock or otherwise inhibits */ +/* updates. */ +/* If there is more than one thread with the given id we */ +/* return the most recent one. */ +GC_INNER GC_thread GC_lookup_thread(pthread_t id) +{ + GC_thread p = GC_threads[THREAD_TABLE_INDEX(id)]; + + while (p != 0 && !THREAD_EQUAL(p -> id, id)) p = p -> next; + return(p); +} + +/* Called by GC_finalize() (in case of an allocation failure observed). */ +GC_INNER void GC_reset_finalizer_nested(void) +{ + GC_thread me = GC_lookup_thread(pthread_self()); + me->finalizer_nested = 0; +} + +/* Checks and updates the thread-local level of finalizers recursion. */ +/* Returns NULL if GC_invoke_finalizers() should not be called by the */ +/* collector (to minimize the risk of a deep finalizers recursion), */ +/* otherwise returns a pointer to the thread-local finalizer_nested. */ +/* Called by GC_notify_or_invoke_finalizers() only (the lock is held). */ +GC_INNER unsigned char *GC_check_finalizer_nested(void) +{ + GC_thread me = GC_lookup_thread(pthread_self()); + unsigned nesting_level = me->finalizer_nested; + if (nesting_level) { + /* We are inside another GC_invoke_finalizers(). */ + /* Skip some implicitly-called GC_invoke_finalizers() */ + /* depending on the nesting (recursion) level. */ + if (++me->finalizer_skipped < (1U << nesting_level)) return NULL; + me->finalizer_skipped = 0; + } + me->finalizer_nested = (unsigned char)(nesting_level + 1); + return &me->finalizer_nested; +} + +#if defined(GC_ASSERTIONS) && defined(THREAD_LOCAL_ALLOC) + /* This is called from thread-local GC_malloc(). */ + GC_bool GC_is_thread_tsd_valid(void *tsd) + { + GC_thread me; + DCL_LOCK_STATE; + + LOCK(); + me = GC_lookup_thread(pthread_self()); + UNLOCK(); + return (word)tsd >= (word)(&me->tlfs) + && (word)tsd < (word)(&me->tlfs) + sizeof(me->tlfs); + } +#endif /* GC_ASSERTIONS && THREAD_LOCAL_ALLOC */ + +GC_API int GC_CALL GC_thread_is_registered(void) +{ + pthread_t self = pthread_self(); + GC_thread me; + DCL_LOCK_STATE; + + LOCK(); + me = GC_lookup_thread(self); + UNLOCK(); + return me != NULL; +} + +static pthread_t main_pthread_id; +static void *main_stack, *main_altstack; +static word main_stack_size, main_altstack_size; + +GC_API void GC_CALL GC_register_altstack(void *stack, GC_word stack_size, + void *altstack, + GC_word altstack_size) +{ + GC_thread me; + pthread_t self = pthread_self(); + DCL_LOCK_STATE; + + LOCK(); + me = GC_lookup_thread(self); + if (me != NULL) { + me->stack = stack; + me->stack_size = stack_size; + me->altstack = altstack; + me->altstack_size = altstack_size; + } else { + /* This happens if we are called before GC_thr_init. */ + main_pthread_id = self; + main_stack = stack; + main_stack_size = stack_size; + main_altstack = altstack; + main_altstack_size = altstack_size; + } + UNLOCK(); +} + +#ifdef CAN_HANDLE_FORK +/* Remove all entries from the GC_threads table, except the */ +/* one for the current thread. We need to do this in the child */ +/* process after a fork(), since only the current thread */ +/* survives in the child. */ +STATIC void GC_remove_all_threads_but_me(void) +{ + pthread_t self = pthread_self(); + int hv; + GC_thread p, next, me; + + for (hv = 0; hv < THREAD_TABLE_SZ; ++hv) { + me = 0; + for (p = GC_threads[hv]; 0 != p; p = next) { + next = p -> next; + if (THREAD_EQUAL(p -> id, self) + && me == NULL) { /* ignore dead threads with the same id */ + me = p; + p -> next = 0; +# ifdef GC_DARWIN_THREADS + /* Update thread Id after fork (it is OK to call */ + /* GC_destroy_thread_local and GC_free_internal */ + /* before update). */ + me -> stop_info.mach_thread = mach_thread_self(); +# endif +# ifdef USE_TKILL_ON_ANDROID + me -> kernel_id = gettid(); +# endif +# if defined(THREAD_LOCAL_ALLOC) && !defined(USE_CUSTOM_SPECIFIC) + { + int res; + + /* Some TLS implementations might be not fork-friendly, so */ + /* we re-assign thread-local pointer to 'tlfs' for safety */ + /* instead of the assertion check (again, it is OK to call */ + /* GC_destroy_thread_local and GC_free_internal before). */ + res = GC_setspecific(GC_thread_key, &me->tlfs); + if (COVERT_DATAFLOW(res) != 0) + ABORT("GC_setspecific failed (in child)"); + } +# endif + } else { +# ifdef THREAD_LOCAL_ALLOC + if (!(p -> flags & FINISHED)) { + /* Cannot call GC_destroy_thread_local here. The free */ + /* lists may be in an inconsistent state (as thread p may */ + /* be updating one of the lists by GC_generic_malloc_many */ + /* or GC_FAST_MALLOC_GRANS when fork is invoked). */ + /* This should not be a problem because the lost elements */ + /* of the free lists will be collected during GC. */ + GC_remove_specific_after_fork(GC_thread_key, p -> id); + } +# endif + if (p != &first_thread) GC_INTERNAL_FREE(p); + } + } + GC_threads[hv] = me; + } +} +#endif /* CAN_HANDLE_FORK */ + +#ifdef USE_PROC_FOR_LIBRARIES + GC_INNER GC_bool GC_segment_is_thread_stack(ptr_t lo, ptr_t hi) + { + int i; + GC_thread p; + + GC_ASSERT(I_HOLD_LOCK()); +# ifdef PARALLEL_MARK + for (i = 0; i < GC_markers_m1; ++i) { + if ((word)marker_sp[i] > (word)lo && (word)marker_sp[i] < (word)hi) + return TRUE; +# ifdef IA64 + if ((word)marker_bsp[i] > (word)lo + && (word)marker_bsp[i] < (word)hi) + return TRUE; +# endif + } +# endif + for (i = 0; i < THREAD_TABLE_SZ; i++) { + for (p = GC_threads[i]; p != 0; p = p -> next) { + if (0 != p -> stack_end) { +# ifdef STACK_GROWS_UP + if ((word)p->stack_end >= (word)lo + && (word)p->stack_end < (word)hi) + return TRUE; +# else /* STACK_GROWS_DOWN */ + if ((word)p->stack_end > (word)lo + && (word)p->stack_end <= (word)hi) + return TRUE; +# endif + } + } + } + return FALSE; + } +#endif /* USE_PROC_FOR_LIBRARIES */ + +#ifdef IA64 + /* Find the largest stack_base smaller than bound. May be used */ + /* to find the boundary between a register stack and adjacent */ + /* immediately preceding memory stack. */ + GC_INNER ptr_t GC_greatest_stack_base_below(ptr_t bound) + { + int i; + GC_thread p; + ptr_t result = 0; + + GC_ASSERT(I_HOLD_LOCK()); +# ifdef PARALLEL_MARK + for (i = 0; i < GC_markers_m1; ++i) { + if ((word)marker_sp[i] > (word)result + && (word)marker_sp[i] < (word)bound) + result = marker_sp[i]; + } +# endif + for (i = 0; i < THREAD_TABLE_SZ; i++) { + for (p = GC_threads[i]; p != 0; p = p -> next) { + if ((word)p->stack_end > (word)result + && (word)p->stack_end < (word)bound) { + result = p -> stack_end; + } + } + } + return result; + } +#endif /* IA64 */ + +#ifndef STAT_READ + /* Also defined in os_dep.c. */ +# define STAT_BUF_SIZE 4096 +# define STAT_READ read + /* If read is wrapped, this may need to be redefined to call */ + /* the real one. */ +#endif + +#ifdef GC_HPUX_THREADS +# define GC_get_nprocs() pthread_num_processors_np() + +#elif defined(GC_OSF1_THREADS) || defined(GC_AIX_THREADS) \ + || defined(GC_SOLARIS_THREADS) || defined(GC_GNU_THREADS) \ + || defined(PLATFORM_ANDROID) || defined(NACL) + GC_INLINE int GC_get_nprocs(void) + { + int nprocs = (int)sysconf(_SC_NPROCESSORS_ONLN); + return nprocs > 0 ? nprocs : 1; /* ignore error silently */ + } + +#elif defined(GC_IRIX_THREADS) + GC_INLINE int GC_get_nprocs(void) + { + int nprocs = (int)sysconf(_SC_NPROC_ONLN); + return nprocs > 0 ? nprocs : 1; /* ignore error silently */ + } + +#elif defined(GC_LINUX_THREADS) /* && !PLATFORM_ANDROID && !NACL */ + /* Return the number of processors. */ + STATIC int GC_get_nprocs(void) + { + /* Should be "return sysconf(_SC_NPROCESSORS_ONLN);" but that */ + /* appears to be buggy in many cases. */ + /* We look for lines "cpu" in /proc/stat. */ + char stat_buf[STAT_BUF_SIZE]; + int f; + int result, i, len; + + f = open("/proc/stat", O_RDONLY); + if (f < 0) { + WARN("Couldn't read /proc/stat\n", 0); + return 1; /* assume an uniprocessor */ + } + len = STAT_READ(f, stat_buf, STAT_BUF_SIZE); + close(f); + + result = 1; + /* Some old kernels only have a single "cpu nnnn ..." */ + /* entry in /proc/stat. We identify those as */ + /* uniprocessors. */ + + for (i = 0; i < len - 100; ++i) { + if (stat_buf[i] == '\n' && stat_buf[i+1] == 'c' + && stat_buf[i+2] == 'p' && stat_buf[i+3] == 'u') { + int cpu_no = atoi(&stat_buf[i + 4]); + if (cpu_no >= result) + result = cpu_no + 1; + } + } + return result; + } + +#elif defined(GC_DGUX386_THREADS) + /* Return the number of processors, or i <= 0 if it can't be determined. */ + STATIC int GC_get_nprocs(void) + { + int numCpus; + struct dg_sys_info_pm_info pm_sysinfo; + int status = 0; + + status = dg_sys_info((long int *) &pm_sysinfo, + DG_SYS_INFO_PM_INFO_TYPE, DG_SYS_INFO_PM_CURRENT_VERSION); + if (status < 0) + /* set -1 for error */ + numCpus = -1; + else + /* Active CPUs */ + numCpus = pm_sysinfo.idle_vp_count; + return(numCpus); + } + +#elif defined(GC_DARWIN_THREADS) || defined(GC_FREEBSD_THREADS) \ + || defined(GC_NETBSD_THREADS) || defined(GC_OPENBSD_THREADS) + STATIC int GC_get_nprocs(void) + { + int mib[] = {CTL_HW,HW_NCPU}; + int res; + size_t len = sizeof(res); + + sysctl(mib, sizeof(mib)/sizeof(int), &res, &len, NULL, 0); + return res; + } + +#else + /* E.g., GC_RTEMS_PTHREADS */ +# define GC_get_nprocs() 1 /* not implemented */ +#endif /* !GC_LINUX_THREADS && !GC_DARWIN_THREADS && ... */ + +#if defined(ARM32) && defined(GC_LINUX_THREADS) && !defined(NACL) + /* Some buggy Linux/arm kernels show only non-sleeping CPUs in */ + /* /proc/stat (and /proc/cpuinfo), so another data system source is */ + /* tried first. Result <= 0 on error. */ + STATIC int GC_get_nprocs_present(void) + { + char stat_buf[16]; + int f; + int len; + + f = open("/sys/devices/system/cpu/present", O_RDONLY); + if (f < 0) + return -1; /* cannot open the file */ + + len = STAT_READ(f, stat_buf, sizeof(stat_buf)); + close(f); + + /* Recognized file format: "0\n" or "0-\n" */ + /* The file might probably contain a comma-separated list */ + /* but we do not need to handle it (just silently ignore). */ + if (len < 2 || stat_buf[0] != '0' || stat_buf[len - 1] != '\n') { + return 0; /* read error or unrecognized content */ + } else if (len == 2) { + return 1; /* an uniprocessor */ + } else if (stat_buf[1] != '-') { + return 0; /* unrecognized content */ + } + + stat_buf[len - 1] = '\0'; /* terminate the string */ + return atoi(&stat_buf[2]) + 1; /* skip "0-" and parse max_cpu_num */ + } +#endif /* ARM32 && GC_LINUX_THREADS && !NACL */ + +/* We hold the GC lock. Wait until an in-progress GC has finished. */ +/* Repeatedly RELEASES GC LOCK in order to wait. */ +/* If wait_for_all is true, then we exit with the GC lock held and no */ +/* collection in progress; otherwise we just wait for the current GC */ +/* to finish. */ +STATIC void GC_wait_for_gc_completion(GC_bool wait_for_all) +{ + DCL_LOCK_STATE; + GC_ASSERT(I_HOLD_LOCK()); + ASSERT_CANCEL_DISABLED(); + if (GC_incremental && GC_collection_in_progress()) { + word old_gc_no = GC_gc_no; + + /* Make sure that no part of our stack is still on the mark stack, */ + /* since it's about to be unmapped. */ + while (GC_incremental && GC_collection_in_progress() + && (wait_for_all || old_gc_no == GC_gc_no)) { + ENTER_GC(); + GC_in_thread_creation = TRUE; + GC_collect_a_little_inner(1); + GC_in_thread_creation = FALSE; + EXIT_GC(); + UNLOCK(); + sched_yield(); + LOCK(); + } + } +} + +#ifdef CAN_HANDLE_FORK +/* Procedures called before and after a fork. The goal here is to make */ +/* it safe to call GC_malloc() in a forked child. It's unclear that is */ +/* attainable, since the single UNIX spec seems to imply that one */ +/* should only call async-signal-safe functions, and we probably can't */ +/* quite guarantee that. But we give it our best shot. (That same */ +/* spec also implies that it's not safe to call the system malloc */ +/* between fork() and exec(). Thus we're doing no worse than it.) */ + +IF_CANCEL(static int fork_cancel_state;) + /* protected by allocation lock. */ + +/* Called before a fork() */ +static void fork_prepare_proc(void) +{ + /* Acquire all relevant locks, so that after releasing the locks */ + /* the child will see a consistent state in which monitor */ + /* invariants hold. Unfortunately, we can't acquire libc locks */ + /* we might need, and there seems to be no guarantee that libc */ + /* must install a suitable fork handler. */ + /* Wait for an ongoing GC to finish, since we can't finish it in */ + /* the (one remaining thread in) the child. */ + LOCK(); + DISABLE_CANCEL(fork_cancel_state); + /* Following waits may include cancellation points. */ +# if defined(PARALLEL_MARK) + if (GC_parallel) + GC_wait_for_reclaim(); +# endif + GC_wait_for_gc_completion(TRUE); +# if defined(PARALLEL_MARK) + if (GC_parallel) + GC_acquire_mark_lock(); +# endif +} + +/* Called in parent after a fork() (even if the latter failed). */ +static void fork_parent_proc(void) +{ +# if defined(PARALLEL_MARK) + if (GC_parallel) + GC_release_mark_lock(); +# endif + RESTORE_CANCEL(fork_cancel_state); + UNLOCK(); +} + +/* Called in child after a fork() */ +static void fork_child_proc(void) +{ + /* Clean up the thread table, so that just our thread is left. */ +# if defined(PARALLEL_MARK) + if (GC_parallel) + GC_release_mark_lock(); +# endif + GC_remove_all_threads_but_me(); +# ifdef PARALLEL_MARK + /* Turn off parallel marking in the child, since we are probably */ + /* just going to exec, and we would have to restart mark threads. */ + GC_parallel = FALSE; +# endif /* PARALLEL_MARK */ + RESTORE_CANCEL(fork_cancel_state); + UNLOCK(); + /* Even though after a fork the child only inherits the single */ + /* thread that called the fork(), if another thread in the parent */ + /* was attempting to lock the mutex while being held in */ + /* fork_child_prepare(), the mutex will be left in an inconsistent */ + /* state in the child after the UNLOCK. This is the case, at */ + /* least, in Mac OS X and leads to an unusable GC in the child */ + /* which will block when attempting to perform any GC operation */ + /* that acquires the allocation mutex. */ +# ifdef USE_PTHREAD_LOCKS + GC_ASSERT(I_DONT_HOLD_LOCK()); + /* Reinitialize the mutex. It should be safe since we are */ + /* running this in the child which only inherits a single thread. */ + /* mutex_destroy() may return EBUSY, which makes no sense, but */ + /* that is the reason for the need of the reinitialization. */ + (void)pthread_mutex_destroy(&GC_allocate_ml); + /* TODO: Probably some targets might need the default mutex */ + /* attribute to be passed instead of NULL. */ + if (0 != pthread_mutex_init(&GC_allocate_ml, NULL)) + ABORT("pthread_mutex_init failed (in child)"); +# endif +} + + /* Routines for fork handling by client (no-op if pthread_atfork works). */ + GC_API void GC_CALL GC_atfork_prepare(void) + { + if (!EXPECT(GC_is_initialized, TRUE)) GC_init(); +# if defined(GC_DARWIN_THREADS) && defined(MPROTECT_VDB) + if (GC_incremental) { + GC_ASSERT(0 == GC_handle_fork); + ABORT("Unable to fork while mprotect_thread is running"); + } +# endif + if (GC_handle_fork <= 0) + fork_prepare_proc(); + } + + GC_API void GC_CALL GC_atfork_parent(void) + { + if (GC_handle_fork <= 0) + fork_parent_proc(); + } + + GC_API void GC_CALL GC_atfork_child(void) + { + if (GC_handle_fork <= 0) + fork_child_proc(); + } +#endif /* CAN_HANDLE_FORK */ + +#ifdef INCLUDE_LINUX_THREAD_DESCR + __thread int GC_dummy_thread_local; + GC_INNER GC_bool GC_enclosing_mapping(ptr_t addr, + ptr_t *startp, ptr_t *endp); +#endif + +#ifdef PARALLEL_MARK + static void setup_mark_lock(void); +#endif + +GC_INNER void GC_thr_init(void) +{ + GC_ASSERT(I_HOLD_LOCK()); + if (GC_thr_initialized) return; + GC_thr_initialized = TRUE; + + GC_ASSERT((word)&GC_threads % sizeof(word) == 0); +# ifdef CAN_HANDLE_FORK + /* Prepare for forks if requested. */ + if (GC_handle_fork) { +# ifdef CAN_CALL_ATFORK + if (pthread_atfork(fork_prepare_proc, fork_parent_proc, + fork_child_proc) == 0) { + /* Handlers successfully registered. */ + GC_handle_fork = 1; + } else +# endif + /* else */ if (GC_handle_fork != -1) + ABORT("pthread_atfork failed"); + } +# endif +# ifdef INCLUDE_LINUX_THREAD_DESCR + /* Explicitly register the region including the address */ + /* of a thread local variable. This should include thread */ + /* locals for the main thread, except for those allocated */ + /* in response to dlopen calls. */ + { + ptr_t thread_local_addr = (ptr_t)(&GC_dummy_thread_local); + ptr_t main_thread_start, main_thread_end; + if (!GC_enclosing_mapping(thread_local_addr, &main_thread_start, + &main_thread_end)) { + ABORT("Failed to find mapping for main thread thread locals"); + } else { + /* main_thread_start and main_thread_end are initialized. */ + GC_add_roots_inner(main_thread_start, main_thread_end, FALSE); + } + } +# endif + /* Add the initial thread, so we can stop it. */ + { + pthread_t self = pthread_self(); + GC_thread t = GC_new_thread(self); + + if (t == NULL) + ABORT("Failed to allocate memory for the initial thread"); +# ifdef GC_DARWIN_THREADS + t -> stop_info.mach_thread = mach_thread_self(); +# else + t -> stop_info.stack_ptr = GC_approx_sp(); +# endif + t -> flags = DETACHED | MAIN_THREAD; + if (THREAD_EQUAL(self, main_pthread_id)) { + t -> stack = main_stack; + t -> stack_size = main_stack_size; + t -> altstack = main_altstack; + t -> altstack_size = main_altstack_size; + } + } + +# ifndef GC_DARWIN_THREADS + GC_stop_init(); +# endif + + /* Set GC_nprocs. */ + { + char * nprocs_string = GETENV("GC_NPROCS"); + GC_nprocs = -1; + if (nprocs_string != NULL) GC_nprocs = atoi(nprocs_string); + } + if (GC_nprocs <= 0 +# if defined(ARM32) && defined(GC_LINUX_THREADS) && !defined(NACL) + && (GC_nprocs = GC_get_nprocs_present()) <= 1 + /* Workaround for some Linux/arm kernels */ +# endif + ) + { + GC_nprocs = GC_get_nprocs(); + } + if (GC_nprocs <= 0) { + WARN("GC_get_nprocs() returned %" WARN_PRIdPTR "\n", GC_nprocs); + GC_nprocs = 2; /* assume dual-core */ +# ifdef PARALLEL_MARK + available_markers_m1 = 0; /* but use only one marker */ +# endif + } else { +# ifdef PARALLEL_MARK + { + char * markers_string = GETENV("GC_MARKERS"); + int markers; + + if (markers_string != NULL) { + markers = atoi(markers_string); + if (markers <= 0 || markers > MAX_MARKERS) { + WARN("Too big or invalid number of mark threads: %" WARN_PRIdPTR + "; using maximum threads\n", (signed_word)markers); + markers = MAX_MARKERS; + } + } else { + markers = GC_nprocs; +# if defined(GC_MIN_MARKERS) && !defined(CPPCHECK) + /* This is primarily for targets without getenv(). */ + if (markers < GC_MIN_MARKERS) + markers = GC_MIN_MARKERS; +# endif + if (markers > MAX_MARKERS) + markers = MAX_MARKERS; /* silently limit the value */ + } + available_markers_m1 = markers - 1; + } +# endif + } + GC_COND_LOG_PRINTF("Number of processors = %d\n", GC_nprocs); +# ifdef PARALLEL_MARK + if (available_markers_m1 <= 0) { + /* Disable parallel marking. */ + GC_parallel = FALSE; + GC_COND_LOG_PRINTF( + "Single marker thread, turning off parallel marking\n"); + } else { + /* Disable true incremental collection, but generational is OK. */ + GC_time_limit = GC_TIME_UNLIMITED; + setup_mark_lock(); + } +# endif +} + +/* Perform all initializations, including those that */ +/* may require allocation. */ +/* Called without allocation lock. */ +/* Must be called before a second thread is created. */ +/* Did we say it's called without the allocation lock? */ +GC_INNER void GC_init_parallel(void) +{ +# if defined(THREAD_LOCAL_ALLOC) + DCL_LOCK_STATE; +# endif + if (parallel_initialized) return; + parallel_initialized = TRUE; + + /* GC_init() calls us back, so set flag first. */ + if (!GC_is_initialized) GC_init(); + /* Initialize thread local free lists if used. */ +# if defined(THREAD_LOCAL_ALLOC) + LOCK(); + GC_init_thread_local(&(GC_lookup_thread(pthread_self())->tlfs)); + UNLOCK(); +# endif +} + +#ifndef GC_NO_PTHREAD_SIGMASK + GC_API int WRAP_FUNC(pthread_sigmask)(int how, const sigset_t *set, + sigset_t *oset) + { + sigset_t fudged_set; + + INIT_REAL_SYMS(); + if (set != NULL && (how == SIG_BLOCK || how == SIG_SETMASK)) { + int sig_suspend = GC_get_suspend_signal(); + + fudged_set = *set; + GC_ASSERT(sig_suspend >= 0); + if (sigdelset(&fudged_set, sig_suspend) != 0) + ABORT("sigdelset failed"); + set = &fudged_set; + } + return(REAL_FUNC(pthread_sigmask)(how, set, oset)); + } +#endif /* !GC_NO_PTHREAD_SIGMASK */ + +/* Wrapper for functions that are likely to block for an appreciable */ +/* length of time. */ + +GC_INNER void GC_do_blocking_inner(ptr_t data, void * context GC_ATTR_UNUSED) +{ + struct blocking_data * d = (struct blocking_data *) data; + pthread_t self = pthread_self(); + GC_thread me; +# if defined(SPARC) || defined(IA64) + ptr_t stack_ptr = GC_save_regs_in_stack(); +# endif +# if defined(GC_DARWIN_THREADS) && !defined(DARWIN_DONT_PARSE_STACK) + GC_bool topOfStackUnset = FALSE; +# endif + DCL_LOCK_STATE; + + LOCK(); + me = GC_lookup_thread(self); + GC_ASSERT(!(me -> thread_blocked)); +# ifdef SPARC + me -> stop_info.stack_ptr = stack_ptr; +# else + me -> stop_info.stack_ptr = GC_approx_sp(); +# endif +# if defined(GC_DARWIN_THREADS) && !defined(DARWIN_DONT_PARSE_STACK) + if (me -> topOfStack == NULL) { + /* GC_do_blocking_inner is not called recursively, */ + /* so topOfStack should be computed now. */ + topOfStackUnset = TRUE; + me -> topOfStack = GC_FindTopOfStack(0); + } +# endif +# ifdef IA64 + me -> backing_store_ptr = stack_ptr; +# endif + me -> thread_blocked = (unsigned char)TRUE; + /* Save context here if we want to support precise stack marking */ + UNLOCK(); + d -> client_data = (d -> fn)(d -> client_data); + LOCK(); /* This will block if the world is stopped. */ + me -> thread_blocked = FALSE; +# if defined(GC_DARWIN_THREADS) && !defined(DARWIN_DONT_PARSE_STACK) + if (topOfStackUnset) + me -> topOfStack = NULL; /* make topOfStack unset again */ +# endif + UNLOCK(); +} + +/* GC_call_with_gc_active() has the opposite to GC_do_blocking() */ +/* functionality. It might be called from a user function invoked by */ +/* GC_do_blocking() to temporarily back allow calling any GC function */ +/* and/or manipulating pointers to the garbage collected heap. */ +GC_API void * GC_CALL GC_call_with_gc_active(GC_fn_type fn, + void * client_data) +{ + struct GC_traced_stack_sect_s stacksect; + pthread_t self = pthread_self(); + GC_thread me; + DCL_LOCK_STATE; + + LOCK(); /* This will block if the world is stopped. */ + me = GC_lookup_thread(self); + + /* Adjust our stack base value (this could happen unless */ + /* GC_get_stack_base() was used which returned GC_SUCCESS). */ + if ((me -> flags & MAIN_THREAD) == 0) { + GC_ASSERT(me -> stack_end != NULL); + if ((word)me->stack_end HOTTER_THAN (word)(&stacksect)) + me -> stack_end = (ptr_t)(&stacksect); + } else { + /* The original stack. */ + if ((word)GC_stackbottom HOTTER_THAN (word)(&stacksect)) + GC_stackbottom = (ptr_t)(&stacksect); + } + + if (!me->thread_blocked) { + /* We are not inside GC_do_blocking() - do nothing more. */ + UNLOCK(); + client_data = fn(client_data); + /* Prevent treating the above as a tail call. */ + GC_noop1((word)(&stacksect)); + return client_data; /* result */ + } + + /* Setup new "stack section". */ + stacksect.saved_stack_ptr = me -> stop_info.stack_ptr; +# ifdef IA64 + /* This is the same as in GC_call_with_stack_base(). */ + stacksect.backing_store_end = GC_save_regs_in_stack(); + /* Unnecessarily flushes register stack, */ + /* but that probably doesn't hurt. */ + stacksect.saved_backing_store_ptr = me -> backing_store_ptr; +# endif + stacksect.prev = me -> traced_stack_sect; + me -> thread_blocked = FALSE; + me -> traced_stack_sect = &stacksect; + + UNLOCK(); + client_data = fn(client_data); + GC_ASSERT(me -> thread_blocked == FALSE); + GC_ASSERT(me -> traced_stack_sect == &stacksect); + + /* Restore original "stack section". */ + LOCK(); + me -> traced_stack_sect = stacksect.prev; +# ifdef IA64 + me -> backing_store_ptr = stacksect.saved_backing_store_ptr; +# endif + me -> thread_blocked = (unsigned char)TRUE; + me -> stop_info.stack_ptr = stacksect.saved_stack_ptr; + UNLOCK(); + + return client_data; /* result */ +} + +STATIC void GC_unregister_my_thread_inner(GC_thread me) +{ +# ifdef DEBUG_THREADS + GC_log_printf( + "Unregistering thread %p, gc_thread = %p, n_threads = %d\n", + (void *)me->id, (void *)me, GC_count_threads()); +# endif + GC_ASSERT(!(me -> flags & FINISHED)); +# if defined(THREAD_LOCAL_ALLOC) + GC_ASSERT(GC_getspecific(GC_thread_key) == &me->tlfs); + GC_destroy_thread_local(&(me->tlfs)); +# endif +# if defined(GC_HAVE_PTHREAD_EXIT) || !defined(GC_NO_PTHREAD_CANCEL) + /* Handle DISABLED_GC flag which is set by the */ + /* intercepted pthread_cancel or pthread_exit. */ + if ((me -> flags & DISABLED_GC) != 0) { + GC_dont_gc--; + } +# endif + if (me -> flags & DETACHED) { + GC_delete_thread(pthread_self()); + } else { + me -> flags |= FINISHED; + } +# if defined(THREAD_LOCAL_ALLOC) + /* It is required to call remove_specific defined in specific.c. */ + GC_remove_specific(GC_thread_key); +# endif +} + +GC_API int GC_CALL GC_unregister_my_thread(void) +{ + pthread_t self = pthread_self(); + GC_thread me; + IF_CANCEL(int cancel_state;) + DCL_LOCK_STATE; + + LOCK(); + DISABLE_CANCEL(cancel_state); + /* Wait for any GC that may be marking from our stack to */ + /* complete before we remove this thread. */ + GC_wait_for_gc_completion(FALSE); + me = GC_lookup_thread(self); +# ifdef DEBUG_THREADS + GC_log_printf( + "Called GC_unregister_my_thread on %p, gc_thread = %p\n", + (void *)self, (void *)me); +# endif + GC_ASSERT(me->id == self); + GC_unregister_my_thread_inner(me); + RESTORE_CANCEL(cancel_state); + UNLOCK(); + return GC_SUCCESS; +} + +/* Called at thread exit. */ +/* Never called for main thread. That's OK, since it */ +/* results in at most a tiny one-time leak. And */ +/* linuxthreads doesn't reclaim the main threads */ +/* resources or id anyway. */ +GC_INNER_PTHRSTART void GC_thread_exit_proc(void *arg) +{ + IF_CANCEL(int cancel_state;) + DCL_LOCK_STATE; + +# ifdef DEBUG_THREADS + GC_log_printf("Called GC_thread_exit_proc on %p, gc_thread = %p\n", + (void *)((GC_thread)arg)->id, arg); +# endif + LOCK(); + DISABLE_CANCEL(cancel_state); + GC_wait_for_gc_completion(FALSE); + GC_unregister_my_thread_inner((GC_thread)arg); + RESTORE_CANCEL(cancel_state); + UNLOCK(); +} + +GC_API int WRAP_FUNC(pthread_join)(pthread_t thread, void **retval) +{ + int result; + GC_thread t; + DCL_LOCK_STATE; + + INIT_REAL_SYMS(); + LOCK(); + t = GC_lookup_thread(thread); + /* This is guaranteed to be the intended one, since the thread id */ + /* can't have been recycled by pthreads. */ + UNLOCK(); + result = REAL_FUNC(pthread_join)(thread, retval); +# if defined(GC_FREEBSD_THREADS) + /* On FreeBSD, the wrapped pthread_join() sometimes returns (what + appears to be) a spurious EINTR which caused the test and real code + to gratuitously fail. Having looked at system pthread library source + code, I see how this return code may be generated. In one path of + code, pthread_join() just returns the errno setting of the thread + being joined. This does not match the POSIX specification or the + local man pages thus I have taken the liberty to catch this one + spurious return value properly conditionalized on GC_FREEBSD_THREADS. */ + if (result == EINTR) result = 0; +# endif + if (result == 0) { + LOCK(); + /* Here the pthread thread id may have been recycled. */ + /* Delete the thread from GC_threads (unless it has been */ + /* registered again from the client thread key destructor). */ + if ((t -> flags & FINISHED) != 0) + GC_delete_gc_thread(t); + UNLOCK(); + } + return result; +} + +GC_API int WRAP_FUNC(pthread_detach)(pthread_t thread) +{ + int result; + GC_thread t; + DCL_LOCK_STATE; + + INIT_REAL_SYMS(); + LOCK(); + t = GC_lookup_thread(thread); + UNLOCK(); + result = REAL_FUNC(pthread_detach)(thread); + if (result == 0) { + LOCK(); + t -> flags |= DETACHED; + /* Here the pthread thread id may have been recycled. */ + if ((t -> flags & FINISHED) != 0) { + GC_delete_gc_thread(t); + } + UNLOCK(); + } + return result; +} + +#ifndef GC_NO_PTHREAD_CANCEL + /* We should deal with the fact that apparently on Solaris and, */ + /* probably, on some Linux we can't collect while a thread is */ + /* exiting, since signals aren't handled properly. This currently */ + /* gives rise to deadlocks. The only workaround seen is to intercept */ + /* pthread_cancel() and pthread_exit(), and disable the collections */ + /* until the thread exit handler is called. That's ugly, because we */ + /* risk growing the heap unnecessarily. But it seems that we don't */ + /* really have an option in that the process is not in a fully */ + /* functional state while a thread is exiting. */ + GC_API int WRAP_FUNC(pthread_cancel)(pthread_t thread) + { +# ifdef CANCEL_SAFE + GC_thread t; + DCL_LOCK_STATE; +# endif + + INIT_REAL_SYMS(); +# ifdef CANCEL_SAFE + LOCK(); + t = GC_lookup_thread(thread); + /* We test DISABLED_GC because pthread_exit could be called at */ + /* the same time. (If t is NULL then pthread_cancel should */ + /* return ESRCH.) */ + if (t != NULL && (t -> flags & DISABLED_GC) == 0) { + t -> flags |= DISABLED_GC; + GC_dont_gc++; + } + UNLOCK(); +# endif + return REAL_FUNC(pthread_cancel)(thread); + } +#endif /* !GC_NO_PTHREAD_CANCEL */ + +#ifdef GC_HAVE_PTHREAD_EXIT + GC_API GC_PTHREAD_EXIT_ATTRIBUTE void WRAP_FUNC(pthread_exit)(void *retval) + { + pthread_t self = pthread_self(); + GC_thread me; + DCL_LOCK_STATE; + + INIT_REAL_SYMS(); + LOCK(); + me = GC_lookup_thread(self); + /* We test DISABLED_GC because someone else could call */ + /* pthread_cancel at the same time. */ + if (me != 0 && (me -> flags & DISABLED_GC) == 0) { + me -> flags |= DISABLED_GC; + GC_dont_gc++; + } + UNLOCK(); + + REAL_FUNC(pthread_exit)(retval); + } +#endif /* GC_HAVE_PTHREAD_EXIT */ + +GC_INNER GC_bool GC_in_thread_creation = FALSE; + /* Protected by allocation lock. */ + +GC_INLINE void GC_record_stack_base(GC_thread me, + const struct GC_stack_base *sb) +{ +# ifndef GC_DARWIN_THREADS + me -> stop_info.stack_ptr = sb -> mem_base; +# endif + me -> stack_end = sb -> mem_base; + if (me -> stack_end == NULL) + ABORT("Bad stack base in GC_register_my_thread"); +# ifdef IA64 + me -> backing_store_end = sb -> reg_base; +# endif +} + +STATIC GC_thread GC_register_my_thread_inner(const struct GC_stack_base *sb, + pthread_t my_pthread) +{ + GC_thread me; + + GC_in_thread_creation = TRUE; /* OK to collect from unknown thread. */ + me = GC_new_thread(my_pthread); + GC_in_thread_creation = FALSE; + if (me == 0) + ABORT("Failed to allocate memory for thread registering"); +# ifdef GC_DARWIN_THREADS + me -> stop_info.mach_thread = mach_thread_self(); +# endif + GC_record_stack_base(me, sb); +# ifdef GC_EXPLICIT_SIGNALS_UNBLOCK + /* Since this could be executed from a detached thread */ + /* destructor, our signals might already be blocked. */ + GC_unblock_gc_signals(); +# endif + return me; +} + +GC_API void GC_CALL GC_allow_register_threads(void) +{ + /* Check GC is initialized and the current thread is registered. */ + GC_ASSERT(GC_lookup_thread(pthread_self()) != 0); + set_need_to_lock(); +} + +GC_API int GC_CALL GC_register_my_thread(const struct GC_stack_base *sb) +{ + pthread_t self = pthread_self(); + GC_thread me; + DCL_LOCK_STATE; + + if (GC_need_to_lock == FALSE) + ABORT("Threads explicit registering is not previously enabled"); + + LOCK(); + me = GC_lookup_thread(self); + if (0 == me) { + me = GC_register_my_thread_inner(sb, self); + me -> flags |= DETACHED; + /* Treat as detached, since we do not need to worry about */ + /* pointer results. */ +# if defined(THREAD_LOCAL_ALLOC) + GC_init_thread_local(&(me->tlfs)); +# endif + UNLOCK(); + return GC_SUCCESS; + } else if ((me -> flags & FINISHED) != 0) { + /* This code is executed when a thread is registered from the */ + /* client thread key destructor. */ + GC_record_stack_base(me, sb); + me -> flags &= ~FINISHED; /* but not DETACHED */ +# ifdef GC_EXPLICIT_SIGNALS_UNBLOCK + /* Since this could be executed from a thread destructor, */ + /* our signals might be blocked. */ + GC_unblock_gc_signals(); +# endif +# if defined(THREAD_LOCAL_ALLOC) + GC_init_thread_local(&(me->tlfs)); +# endif + UNLOCK(); + return GC_SUCCESS; + } else { + UNLOCK(); + return GC_DUPLICATE; + } +} + +struct start_info { + void *(*start_routine)(void *); + void *arg; + word flags; + sem_t registered; /* 1 ==> in our thread table, but */ + /* parent hasn't yet noticed. */ +}; + +/* Called from GC_inner_start_routine(). Defined in this file to */ +/* minimize the number of include files in pthread_start.c (because */ +/* sem_t and sem_post() are not used that file directly). */ +GC_INNER_PTHRSTART GC_thread GC_start_rtn_prepare_thread( + void *(**pstart)(void *), + void **pstart_arg, + struct GC_stack_base *sb, void *arg) +{ + struct start_info * si = arg; + pthread_t self = pthread_self(); + GC_thread me; + DCL_LOCK_STATE; + +# ifdef DEBUG_THREADS + GC_log_printf("Starting thread %p, pid = %ld, sp = %p\n", + (void *)self, (long)getpid(), (void *)&arg); +# endif + LOCK(); + me = GC_register_my_thread_inner(sb, self); + me -> flags = si -> flags; +# if defined(THREAD_LOCAL_ALLOC) + GC_init_thread_local(&(me->tlfs)); +# endif + UNLOCK(); + *pstart = si -> start_routine; +# ifdef DEBUG_THREADS + GC_log_printf("start_routine = %p\n", (void *)(signed_word)(*pstart)); +# endif + *pstart_arg = si -> arg; + sem_post(&(si -> registered)); /* Last action on si. */ + /* OK to deallocate. */ + return me; +} + +GC_INNER_PTHRSTART void * GC_CALLBACK GC_inner_start_routine( + struct GC_stack_base *sb, void *arg); + /* defined in pthread_start.c */ + +STATIC void * GC_start_routine(void * arg) +{ +# ifdef INCLUDE_LINUX_THREAD_DESCR + struct GC_stack_base sb; + +# ifdef REDIRECT_MALLOC + /* GC_get_stack_base may call pthread_getattr_np, which can */ + /* unfortunately call realloc, which may allocate from an */ + /* unregistered thread. This is unpleasant, since it might */ + /* force heap growth (or, even, heap overflow). */ + GC_disable(); +# endif + if (GC_get_stack_base(&sb) != GC_SUCCESS) + ABORT("Failed to get thread stack base"); +# ifdef REDIRECT_MALLOC + GC_enable(); +# endif + return GC_inner_start_routine(&sb, arg); +# else + return GC_call_with_stack_base(GC_inner_start_routine, arg); +# endif +} + +GC_API int WRAP_FUNC(pthread_create)(pthread_t *new_thread, + GC_PTHREAD_CREATE_CONST pthread_attr_t *attr, + void *(*start_routine)(void *), void *arg) +{ + int result; + int detachstate; + word my_flags = 0; + struct start_info * si; + DCL_LOCK_STATE; + /* This is otherwise saved only in an area mmapped by the thread */ + /* library, which isn't visible to the collector. */ + + /* We resist the temptation to muck with the stack size here, */ + /* even if the default is unreasonably small. That's the client's */ + /* responsibility. */ + + INIT_REAL_SYMS(); + LOCK(); + si = (struct start_info *)GC_INTERNAL_MALLOC(sizeof(struct start_info), + NORMAL); + UNLOCK(); + if (!EXPECT(parallel_initialized, TRUE)) + GC_init_parallel(); + if (EXPECT(0 == si, FALSE) && + (si = (struct start_info *) + (*GC_get_oom_fn())(sizeof(struct start_info))) == 0) + return(ENOMEM); + if (sem_init(&(si -> registered), GC_SEM_INIT_PSHARED, 0) != 0) + ABORT("sem_init failed"); + + si -> start_routine = start_routine; + si -> arg = arg; + LOCK(); + if (!EXPECT(GC_thr_initialized, TRUE)) + GC_thr_init(); +# ifdef GC_ASSERTIONS + { + size_t stack_size = 0; + if (NULL != attr) { + if (pthread_attr_getstacksize(attr, &stack_size) != 0) + ABORT("pthread_attr_getstacksize failed"); + } + if (0 == stack_size) { + pthread_attr_t my_attr; + + if (pthread_attr_init(&my_attr) != 0) + ABORT("pthread_attr_init failed"); + if (pthread_attr_getstacksize(&my_attr, &stack_size) != 0) + ABORT("pthread_attr_getstacksize failed"); + (void)pthread_attr_destroy(&my_attr); + } + /* On Solaris 10, with default attr initialization, */ + /* stack_size remains 0. Fudge it. */ + if (0 == stack_size) { +# ifndef SOLARIS + WARN("Failed to get stack size for assertion checking\n", 0); +# endif + stack_size = 1000000; + } + GC_ASSERT(stack_size >= MIN_STACK_SIZE); + /* Our threads may need to do some work for the GC. */ + /* Ridiculously small threads won't work, and they */ + /* probably wouldn't work anyway. */ + } +# endif + if (NULL == attr) { + detachstate = PTHREAD_CREATE_JOINABLE; + } else { + pthread_attr_getdetachstate(attr, &detachstate); + } + if (PTHREAD_CREATE_DETACHED == detachstate) my_flags |= DETACHED; + si -> flags = my_flags; + UNLOCK(); +# ifdef DEBUG_THREADS + GC_log_printf("About to start new thread from thread %p\n", + (void *)pthread_self()); +# endif + set_need_to_lock(); + result = REAL_FUNC(pthread_create)(new_thread, attr, GC_start_routine, si); + + /* Wait until child has been added to the thread table. */ + /* This also ensures that we hold onto si until the child is done */ + /* with it. Thus it doesn't matter whether it is otherwise */ + /* visible to the collector. */ + if (0 == result) { + IF_CANCEL(int cancel_state;) + +# ifdef DEBUG_THREADS + /* new_thread is non-NULL because pthread_create requires it. */ + GC_log_printf("Started thread %p\n", (void *)(*new_thread)); +# endif + DISABLE_CANCEL(cancel_state); + /* pthread_create is not a cancellation point. */ + while (0 != sem_wait(&(si -> registered))) { + if (EINTR != errno) ABORT("sem_wait failed"); + } + RESTORE_CANCEL(cancel_state); + } + sem_destroy(&(si -> registered)); + LOCK(); + GC_INTERNAL_FREE(si); + UNLOCK(); + + return(result); +} + +#if defined(USE_SPIN_LOCK) || !defined(NO_PTHREAD_TRYLOCK) +/* Spend a few cycles in a way that can't introduce contention with */ +/* other threads. */ +STATIC void GC_pause(void) +{ + int i; +# if !defined(__GNUC__) || defined(__INTEL_COMPILER) + volatile word dummy = 0; +# endif + + for (i = 0; i < 10; ++i) { +# if defined(__GNUC__) && !defined(__INTEL_COMPILER) + __asm__ __volatile__ (" " : : : "memory"); +# else + /* Something that's unlikely to be optimized away. */ + GC_noop1(++dummy); +# endif + } +} +#endif + +#define SPIN_MAX 128 /* Maximum number of calls to GC_pause before */ + /* give up. */ + +GC_INNER volatile GC_bool GC_collecting = 0; + /* A hint that we're in the collector and */ + /* holding the allocation lock for an */ + /* extended period. */ + +#if (!defined(USE_SPIN_LOCK) && !defined(NO_PTHREAD_TRYLOCK)) \ + || defined(PARALLEL_MARK) +/* If we don't want to use the below spinlock implementation, either */ +/* because we don't have a GC_test_and_set implementation, or because */ +/* we don't want to risk sleeping, we can still try spinning on */ +/* pthread_mutex_trylock for a while. This appears to be very */ +/* beneficial in many cases. */ +/* I suspect that under high contention this is nearly always better */ +/* than the spin lock. But it's a bit slower on a uniprocessor. */ +/* Hence we still default to the spin lock. */ +/* This is also used to acquire the mark lock for the parallel */ +/* marker. */ + +/* Here we use a strict exponential backoff scheme. I don't know */ +/* whether that's better or worse than the above. We eventually */ +/* yield by calling pthread_mutex_lock(); it never makes sense to */ +/* explicitly sleep. */ + +/* #define LOCK_STATS */ +/* Note that LOCK_STATS requires AO_HAVE_test_and_set. */ +#ifdef LOCK_STATS + volatile AO_t GC_spin_count = 0; + volatile AO_t GC_block_count = 0; + volatile AO_t GC_unlocked_count = 0; +#endif + +STATIC void GC_generic_lock(pthread_mutex_t * lock) +{ +#ifndef NO_PTHREAD_TRYLOCK + unsigned pause_length = 1; + unsigned i; + + if (0 == pthread_mutex_trylock(lock)) { +# ifdef LOCK_STATS + (void)AO_fetch_and_add1(&GC_unlocked_count); +# endif + return; + } + for (; pause_length <= SPIN_MAX; pause_length <<= 1) { + for (i = 0; i < pause_length; ++i) { + GC_pause(); + } + switch(pthread_mutex_trylock(lock)) { + case 0: +# ifdef LOCK_STATS + (void)AO_fetch_and_add1(&GC_spin_count); +# endif + return; + case EBUSY: + break; + default: + ABORT("Unexpected error from pthread_mutex_trylock"); + } + } +#endif /* !NO_PTHREAD_TRYLOCK */ +# ifdef LOCK_STATS + (void)AO_fetch_and_add1(&GC_block_count); +# endif + pthread_mutex_lock(lock); +} + +#endif /* !USE_SPIN_LOCK || ... */ + +#if defined(USE_SPIN_LOCK) + +/* Reasonably fast spin locks. Basically the same implementation */ +/* as STL alloc.h. This isn't really the right way to do this. */ +/* but until the POSIX scheduling mess gets straightened out ... */ + +GC_INNER volatile AO_TS_t GC_allocate_lock = AO_TS_INITIALIZER; + +GC_INNER void GC_lock(void) +{ +# define low_spin_max 30 /* spin cycles if we suspect uniprocessor */ +# define high_spin_max SPIN_MAX /* spin cycles for multiprocessor */ + static unsigned spin_max = low_spin_max; + unsigned my_spin_max; + static unsigned last_spins = 0; + unsigned my_last_spins; + unsigned i; + + if (AO_test_and_set_acquire(&GC_allocate_lock) == AO_TS_CLEAR) { + return; + } + my_spin_max = spin_max; + my_last_spins = last_spins; + for (i = 0; i < my_spin_max; i++) { + if (GC_collecting || GC_nprocs == 1) goto yield; + if (i < my_last_spins/2) { + GC_pause(); + continue; + } + if (AO_test_and_set_acquire(&GC_allocate_lock) == AO_TS_CLEAR) { + /* + * got it! + * Spinning worked. Thus we're probably not being scheduled + * against the other process with which we were contending. + * Thus it makes sense to spin longer the next time. + */ + last_spins = i; + spin_max = high_spin_max; + return; + } + } + /* We are probably being scheduled against the other process. Sleep. */ + spin_max = low_spin_max; +yield: + for (i = 0;; ++i) { + if (AO_test_and_set_acquire(&GC_allocate_lock) == AO_TS_CLEAR) { + return; + } +# define SLEEP_THRESHOLD 12 + /* Under Linux very short sleeps tend to wait until */ + /* the current time quantum expires. On old Linux */ + /* kernels nanosleep (<= 2 msecs) just spins. */ + /* (Under 2.4, this happens only for real-time */ + /* processes.) We want to minimize both behaviors */ + /* here. */ + if (i < SLEEP_THRESHOLD) { + sched_yield(); + } else { + struct timespec ts; + + if (i > 24) i = 24; + /* Don't wait for more than about 15 msecs, */ + /* even under extreme contention. */ + ts.tv_sec = 0; + ts.tv_nsec = 1 << i; + nanosleep(&ts, 0); + } + } +} + +#else /* !USE_SPIN_LOCK */ +GC_INNER void GC_lock(void) +{ +#ifndef NO_PTHREAD_TRYLOCK + if (1 == GC_nprocs || GC_collecting) { + pthread_mutex_lock(&GC_allocate_ml); + } else { + GC_generic_lock(&GC_allocate_ml); + } +#else /* !NO_PTHREAD_TRYLOCK */ + pthread_mutex_lock(&GC_allocate_ml); +#endif /* !NO_PTHREAD_TRYLOCK */ +} + +#endif /* !USE_SPIN_LOCK */ + +#ifdef PARALLEL_MARK + +# ifdef GC_ASSERTIONS + STATIC unsigned long GC_mark_lock_holder = NO_THREAD; +# define SET_MARK_LOCK_HOLDER \ + (void)(GC_mark_lock_holder = NUMERIC_THREAD_ID(pthread_self())) +# define UNSET_MARK_LOCK_HOLDER \ + do { \ + GC_ASSERT(GC_mark_lock_holder \ + == NUMERIC_THREAD_ID(pthread_self())); \ + GC_mark_lock_holder = NO_THREAD; \ + } while (0) +# else +# define SET_MARK_LOCK_HOLDER (void)0 +# define UNSET_MARK_LOCK_HOLDER (void)0 +# endif /* !GC_ASSERTIONS */ + +#ifdef GLIBC_2_1_MUTEX_HACK + /* Ugly workaround for a linux threads bug in the final versions */ + /* of glibc2.1. Pthread_mutex_trylock sets the mutex owner */ + /* field even when it fails to acquire the mutex. This causes */ + /* pthread_cond_wait to die. Remove for glibc2.2. */ + /* According to the man page, we should use */ + /* PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP, but that isn't actually */ + /* defined. */ + static pthread_mutex_t mark_mutex = + {0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, {0, 0}}; +#else + static pthread_mutex_t mark_mutex = PTHREAD_MUTEX_INITIALIZER; +#endif + +static pthread_cond_t builder_cv = PTHREAD_COND_INITIALIZER; + +#ifdef GLIBC_2_19_TSX_BUG + /* Parse string like [.[]] and return major value. */ + static int parse_version(int *pminor, const char *pverstr) { + char *endp; + unsigned long value = strtoul(pverstr, &endp, 10); + int major = (int)value; + + if (major < 0 || (char *)pverstr == endp || (unsigned)major != value) { + /* Parse error */ + return -1; + } + if (*endp != '.') { + /* No minor part. */ + *pminor = -1; + } else { + value = strtoul(endp + 1, &endp, 10); + *pminor = (int)value; + if (*pminor < 0 || (unsigned)(*pminor) != value) { + return -1; + } + } + return major; + } +#endif /* GLIBC_2_19_TSX_BUG */ + +static void setup_mark_lock(void) +{ +# ifdef GLIBC_2_19_TSX_BUG + pthread_mutexattr_t mattr; + int glibc_minor = -1; + int glibc_major = parse_version(&glibc_minor, gnu_get_libc_version()); + + if (glibc_major > 2 || (glibc_major == 2 && glibc_minor >= 19)) { + /* TODO: disable this workaround for glibc with fixed TSX */ + /* This disables lock elision to workaround a bug in glibc 2.19+ */ + if (0 != pthread_mutexattr_init(&mattr)) { + ABORT("pthread_mutexattr_init failed"); + } + if (0 != pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_NORMAL)) { + ABORT("pthread_mutexattr_settype failed"); + } + if (0 != pthread_mutex_init(&mark_mutex, &mattr)) { + ABORT("pthread_mutex_init failed"); + } + (void)pthread_mutexattr_destroy(&mattr); + } +# endif +} + +GC_INNER void GC_acquire_mark_lock(void) +{ +# ifdef NUMERIC_THREAD_ID_UNIQUE + GC_ASSERT(GC_mark_lock_holder != NUMERIC_THREAD_ID(pthread_self())); +# endif + GC_generic_lock(&mark_mutex); + SET_MARK_LOCK_HOLDER; +} + +GC_INNER void GC_release_mark_lock(void) +{ + UNSET_MARK_LOCK_HOLDER; + if (pthread_mutex_unlock(&mark_mutex) != 0) { + ABORT("pthread_mutex_unlock failed"); + } +} + +/* Collector must wait for a freelist builders for 2 reasons: */ +/* 1) Mark bits may still be getting examined without lock. */ +/* 2) Partial free lists referenced only by locals may not be scanned */ +/* correctly, e.g. if they contain "pointer-free" objects, since the */ +/* free-list link may be ignored. */ +STATIC void GC_wait_builder(void) +{ + ASSERT_CANCEL_DISABLED(); + UNSET_MARK_LOCK_HOLDER; + if (pthread_cond_wait(&builder_cv, &mark_mutex) != 0) { + ABORT("pthread_cond_wait failed"); + } + GC_ASSERT(GC_mark_lock_holder == NO_THREAD); + SET_MARK_LOCK_HOLDER; +} + +GC_INNER void GC_wait_for_reclaim(void) +{ + GC_acquire_mark_lock(); + while (GC_fl_builder_count > 0) { + GC_wait_builder(); + } + GC_release_mark_lock(); +} + +GC_INNER void GC_notify_all_builder(void) +{ + GC_ASSERT(GC_mark_lock_holder == NUMERIC_THREAD_ID(pthread_self())); + if (pthread_cond_broadcast(&builder_cv) != 0) { + ABORT("pthread_cond_broadcast failed"); + } +} + +GC_INNER void GC_wait_marker(void) +{ + ASSERT_CANCEL_DISABLED(); + GC_ASSERT(GC_parallel); + UNSET_MARK_LOCK_HOLDER; + if (pthread_cond_wait(&mark_cv, &mark_mutex) != 0) { + ABORT("pthread_cond_wait failed"); + } + GC_ASSERT(GC_mark_lock_holder == NO_THREAD); + SET_MARK_LOCK_HOLDER; +} + +GC_INNER void GC_notify_all_marker(void) +{ + GC_ASSERT(GC_parallel); + if (pthread_cond_broadcast(&mark_cv) != 0) { + ABORT("pthread_cond_broadcast failed"); + } +} + +#endif /* PARALLEL_MARK */ + +#ifdef PTHREAD_REGISTER_CANCEL_WEAK_STUBS + /* Workaround "undefined reference" linkage errors on some targets. */ + void __pthread_register_cancel() __attribute__((__weak__)); + void __pthread_unregister_cancel() __attribute__((__weak__)); + void __pthread_register_cancel() {} + void __pthread_unregister_cancel() {} +#endif + +#endif /* GC_PTHREADS */ diff --git a/ptr_chck.c b/ptr_chck.c new file mode 100644 index 0000000..e86378e --- /dev/null +++ b/ptr_chck.c @@ -0,0 +1,278 @@ +/* + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_pmark.h" + +/* + * These are checking routines calls to which could be inserted by a + * preprocessor to validate C pointer arithmetic. + */ + +STATIC void GC_CALLBACK GC_default_same_obj_print_proc(void * p, void * q) +{ + ABORT_ARG2("GC_same_obj test failed", + ": %p and %p are not in the same object", p, q); +} + +void (GC_CALLBACK *GC_same_obj_print_proc) (void *, void *) + = GC_default_same_obj_print_proc; + +/* Check that p and q point to the same object. Call */ +/* *GC_same_obj_print_proc if they don't. */ +/* Returns the first argument. (Return value may be hard */ +/* to use due to typing issues. But if we had a suitable */ +/* preprocessor...) */ +/* Succeeds if neither p nor q points to the heap. */ +/* We assume this is performance critical. (It shouldn't */ +/* be called by production code, but this can easily make */ +/* debugging intolerably slow.) */ +GC_API void * GC_CALL GC_same_obj(void *p, void *q) +{ + struct hblk *h; + hdr *hhdr; + ptr_t base, limit; + word sz; + + if (!EXPECT(GC_is_initialized, TRUE)) GC_init(); + hhdr = HDR((word)p); + if (hhdr == 0) { + if (divHBLKSZ((word)p) != divHBLKSZ((word)q) + && HDR((word)q) != 0) { + goto fail; + } + return(p); + } + /* If it's a pointer to the middle of a large object, move it */ + /* to the beginning. */ + if (IS_FORWARDING_ADDR_OR_NIL(hhdr)) { + h = HBLKPTR(p) - (word)hhdr; + hhdr = HDR(h); + while (IS_FORWARDING_ADDR_OR_NIL(hhdr)) { + h = FORWARDED_ADDR(h, hhdr); + hhdr = HDR(h); + } + limit = (ptr_t)h + hhdr -> hb_sz; + if ((word)p >= (word)limit || (word)q >= (word)limit + || (word)q < (word)h) { + goto fail; + } + return(p); + } + sz = hhdr -> hb_sz; + if (sz > MAXOBJBYTES) { + base = (ptr_t)HBLKPTR(p); + limit = base + sz; + if ((word)p >= (word)limit) { + goto fail; + } + } else { + size_t offset; + size_t pdispl = HBLKDISPL(p); + + offset = pdispl % sz; + if (HBLKPTR(p) != HBLKPTR(q)) goto fail; + /* W/o this check, we might miss an error if */ + /* q points to the first object on a page, and */ + /* points just before the page. */ + base = (ptr_t)p - offset; + limit = base + sz; + } + /* [base, limit) delimits the object containing p, if any. */ + /* If p is not inside a valid object, then either q is */ + /* also outside any valid object, or it is outside */ + /* [base, limit). */ + if ((word)q >= (word)limit || (word)q < (word)base) { + goto fail; + } + return(p); +fail: + (*GC_same_obj_print_proc)((ptr_t)p, (ptr_t)q); + return(p); +} + +STATIC void GC_CALLBACK GC_default_is_valid_displacement_print_proc (void *p) +{ + ABORT_ARG1("GC_is_valid_displacement test failed", ": %p not valid", p); +} + +void (GC_CALLBACK *GC_is_valid_displacement_print_proc)(void *) = + GC_default_is_valid_displacement_print_proc; + +/* Check that if p is a pointer to a heap page, then it points to */ +/* a valid displacement within a heap object. */ +/* Uninteresting with GC_all_interior_pointers. */ +/* Always returns its argument. */ +/* Note that we don't lock, since nothing relevant about the header */ +/* should change while we have a valid object pointer to the block. */ +GC_API void * GC_CALL GC_is_valid_displacement(void *p) +{ + hdr *hhdr; + word pdispl; + word offset; + struct hblk *h; + word sz; + + if (!EXPECT(GC_is_initialized, TRUE)) GC_init(); + hhdr = HDR((word)p); + if (hhdr == 0) return(p); + h = HBLKPTR(p); + if (GC_all_interior_pointers) { + while (IS_FORWARDING_ADDR_OR_NIL(hhdr)) { + h = FORWARDED_ADDR(h, hhdr); + hhdr = HDR(h); + } + } + if (IS_FORWARDING_ADDR_OR_NIL(hhdr)) { + goto fail; + } + sz = hhdr -> hb_sz; + pdispl = HBLKDISPL(p); + offset = pdispl % sz; + if ((sz > MAXOBJBYTES && (word)p >= (word)h + sz) + || !GC_valid_offsets[offset] + || (word)p - offset + sz > (word)(h + 1)) { + goto fail; + } + return(p); +fail: + (*GC_is_valid_displacement_print_proc)((ptr_t)p); + return(p); +} + +STATIC void GC_CALLBACK GC_default_is_visible_print_proc(void * p) +{ + ABORT_ARG1("GC_is_visible test failed", ": %p not GC-visible", p); +} + +void (GC_CALLBACK *GC_is_visible_print_proc)(void * p) = + GC_default_is_visible_print_proc; + +#ifndef THREADS +/* Could p be a stack address? */ + STATIC GC_bool GC_on_stack(ptr_t p) + { +# ifdef STACK_GROWS_DOWN + if ((word)p >= (word)GC_approx_sp() + && (word)p < (word)GC_stackbottom) { + return(TRUE); + } +# else + if ((word)p <= (word)GC_approx_sp() + && (word)p > (word)GC_stackbottom) { + return(TRUE); + } +# endif + return(FALSE); + } +#endif + +/* Check that p is visible */ +/* to the collector as a possibly pointer containing location. */ +/* If it isn't, invoke *GC_is_visible_print_proc. */ +/* Returns the argument in all cases. May erroneously succeed */ +/* in hard cases. (This is intended for debugging use with */ +/* untyped allocations. The idea is that it should be possible, though */ +/* slow, to add such a call to all indirect pointer stores.) */ +/* Currently useless for the multi-threaded worlds. */ +GC_API void * GC_CALL GC_is_visible(void *p) +{ + hdr *hhdr; + + if ((word)p & (ALIGNMENT - 1)) goto fail; + if (!EXPECT(GC_is_initialized, TRUE)) GC_init(); +# ifdef THREADS + hhdr = HDR((word)p); + if (hhdr != 0 && GC_base(p) == 0) { + goto fail; + } else { + /* May be inside thread stack. We can't do much. */ + return(p); + } +# else + /* Check stack first: */ + if (GC_on_stack(p)) return(p); + hhdr = HDR((word)p); + if (hhdr == 0) { + if (GC_is_static_root(p)) return(p); + /* Else do it again correctly: */ +# if defined(DYNAMIC_LOADING) || defined(MSWIN32) \ + || defined(MSWINCE) || defined(CYGWIN32) || defined(PCR) + GC_register_dynamic_libraries(); + if (GC_is_static_root(p)) + return(p); +# endif + goto fail; + } else { + /* p points to the heap. */ + word descr; + ptr_t base = GC_base(p); /* Should be manually inlined? */ + + if (base == 0) goto fail; + if (HBLKPTR(base) != HBLKPTR(p)) hhdr = HDR((word)p); + descr = hhdr -> hb_descr; + retry: + switch(descr & GC_DS_TAGS) { + case GC_DS_LENGTH: + if ((word)p - (word)base > descr) goto fail; + break; + case GC_DS_BITMAP: + if ((word)p - (word)base >= WORDS_TO_BYTES(BITMAP_BITS) + || ((word)p & (sizeof(word) - 1))) goto fail; + if (!(((word)1 << (WORDSZ - ((ptr_t)p - (ptr_t)base) - 1)) + & descr)) goto fail; + break; + case GC_DS_PROC: + /* We could try to decipher this partially. */ + /* For now we just punt. */ + break; + case GC_DS_PER_OBJECT: + if ((signed_word)descr >= 0) { + descr = *(word *)((ptr_t)base + (descr & ~GC_DS_TAGS)); + } else { + ptr_t type_descr = *(ptr_t *)base; + descr = *(word *)(type_descr + - (descr - (word)(GC_DS_PER_OBJECT + - GC_INDIR_PER_OBJ_BIAS))); + } + goto retry; + } + return(p); + } +# endif +fail: + (*GC_is_visible_print_proc)((ptr_t)p); + return(p); +} + +GC_API void * GC_CALL GC_pre_incr (void **p, ptrdiff_t how_much) +{ + void * initial = *p; + void * result = GC_same_obj((void *)((ptr_t)initial + how_much), initial); + + if (!GC_all_interior_pointers) { + (void) GC_is_valid_displacement(result); + } + return (*p = result); +} + +GC_API void * GC_CALL GC_post_incr (void **p, ptrdiff_t how_much) +{ + void * initial = *p; + void * result = GC_same_obj((void *)((ptr_t)initial + how_much), initial); + + if (!GC_all_interior_pointers) { + (void) GC_is_valid_displacement(result); + } + *p = result; + return(initial); +} diff --git a/real_malloc.c b/real_malloc.c new file mode 100644 index 0000000..145e73f --- /dev/null +++ b/real_malloc.c @@ -0,0 +1,39 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +# ifdef HAVE_CONFIG_H +# include "config.h" +# endif + +# ifdef PCR +/* + * This definition should go in its own file that includes no other + * header files. Otherwise, we risk not getting the underlying system + * malloc. + */ +# define PCR_NO_RENAME +# include + +void * real_malloc(size_t size) +{ + return(malloc(size)); +} + +# else + +extern int GC_quiet; + /* ANSI C doesn't allow translation units to be empty. */ + /* So we guarantee this one is nonempty. */ + +#endif /* PCR */ diff --git a/reclaim.c b/reclaim.c new file mode 100644 index 0000000..78bd9c0 --- /dev/null +++ b/reclaim.c @@ -0,0 +1,827 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1996 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved. + * Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +#ifdef ENABLE_DISCLAIM +# include "gc_disclaim.h" +#endif + +#include + +GC_INNER signed_word GC_bytes_found = 0; + /* Number of bytes of memory reclaimed */ + /* minus the number of bytes originally */ + /* on free lists which we had to drop. */ + +#if defined(PARALLEL_MARK) + GC_INNER signed_word GC_fl_builder_count = 0; + /* Number of threads currently building free lists without */ + /* holding GC lock. It is not safe to collect if this is */ + /* nonzero. Also, together with the mark lock, it is used as */ + /* a semaphore during marker threads startup. */ +#endif /* PARALLEL_MARK */ + +/* We defer printing of leaked objects until we're done with the GC */ +/* cycle, since the routine for printing objects needs to run outside */ +/* the collector, e.g. without the allocation lock. */ +#ifndef MAX_LEAKED +# define MAX_LEAKED 40 +#endif +STATIC ptr_t GC_leaked[MAX_LEAKED] = { NULL }; +STATIC unsigned GC_n_leaked = 0; + +GC_INNER GC_bool GC_have_errors = FALSE; + +#if !defined(EAGER_SWEEP) && defined(ENABLE_DISCLAIM) + STATIC void GC_reclaim_unconditionally_marked(void); +#endif + +GC_INLINE void GC_add_leaked(ptr_t leaked) +{ +# ifndef SHORT_DBG_HDRS + if (GC_findleak_delay_free && !GC_check_leaked(leaked)) + return; +# endif + + GC_have_errors = TRUE; + if (GC_n_leaked < MAX_LEAKED) { + GC_leaked[GC_n_leaked++] = leaked; + /* Make sure it's not reclaimed this cycle */ + GC_set_mark_bit(leaked); + } +} + +/* Print all objects on the list after printing any smashed objects. */ +/* Clear both lists. Called without the allocation lock held. */ +GC_INNER void GC_print_all_errors(void) +{ + static GC_bool printing_errors = FALSE; + GC_bool have_errors; + unsigned i, n_leaked; + ptr_t leaked[MAX_LEAKED]; + DCL_LOCK_STATE; + + LOCK(); + if (printing_errors) { + UNLOCK(); + return; + } + have_errors = GC_have_errors; + printing_errors = TRUE; + n_leaked = GC_n_leaked; + GC_ASSERT(n_leaked <= MAX_LEAKED); + BCOPY(GC_leaked, leaked, n_leaked * sizeof(ptr_t)); + GC_n_leaked = 0; + BZERO(GC_leaked, n_leaked * sizeof(ptr_t)); + UNLOCK(); + + if (GC_debugging_started) { + GC_print_all_smashed(); + } else { + have_errors = FALSE; + } + + if (n_leaked > 0) { + GC_err_printf("Found %u leaked objects:\n", n_leaked); + have_errors = TRUE; + } + for (i = 0; i < n_leaked; i++) { + ptr_t p = leaked[i]; + GC_print_heap_obj(p); + GC_free(p); + } + + if (have_errors +# ifndef GC_ABORT_ON_LEAK + && GETENV("GC_ABORT_ON_LEAK") != NULL +# endif + ) { + ABORT("Leaked or smashed objects encountered"); + } + + LOCK(); + printing_errors = FALSE; + UNLOCK(); +} + + +/* + * reclaim phase + * + */ + +/* Test whether a block is completely empty, i.e. contains no marked */ +/* objects. This does not require the block to be in physical memory. */ +GC_INNER GC_bool GC_block_empty(hdr *hhdr) +{ + return (hhdr -> hb_n_marks == 0); +} + +STATIC GC_bool GC_block_nearly_full(hdr *hhdr) +{ + return (hhdr -> hb_n_marks > 7 * HBLK_OBJS(hhdr -> hb_sz)/8); +} + +/* FIXME: This should perhaps again be specialized for USE_MARK_BYTES */ +/* and USE_MARK_BITS cases. */ + +/* + * Restore unmarked small objects in h of size sz to the object + * free list. Returns the new list. + * Clears unmarked objects. Sz is in bytes. + */ +STATIC ptr_t GC_reclaim_clear(struct hblk *hbp, hdr *hhdr, size_t sz, + ptr_t list, signed_word *count) +{ + word bit_no = 0; + word *p, *q, *plim; + signed_word n_bytes_found = 0; + + GC_ASSERT(hhdr == GC_find_header((ptr_t)hbp)); + GC_ASSERT(sz == hhdr -> hb_sz); + GC_ASSERT((sz & (BYTES_PER_WORD-1)) == 0); + p = (word *)(hbp->hb_body); + plim = (word *)(hbp->hb_body + HBLKSIZE - sz); + + /* go through all words in block */ + while ((word)p <= (word)plim) { + if (mark_bit_from_hdr(hhdr, bit_no)) { + p = (word *)((ptr_t)p + sz); + } else { + n_bytes_found += sz; + /* object is available - put on list */ + obj_link(p) = list; + list = ((ptr_t)p); + /* Clear object, advance p to next object in the process */ + q = (word *)((ptr_t)p + sz); +# ifdef USE_MARK_BYTES + GC_ASSERT(!(sz & 1) + && !((word)p & (2 * sizeof(word) - 1))); + p[1] = 0; + p += 2; + while ((word)p < (word)q) { + CLEAR_DOUBLE(p); + p += 2; + } +# else + p++; /* Skip link field */ + while ((word)p < (word)q) { + *p++ = 0; + } +# endif + } + bit_no += MARK_BIT_OFFSET(sz); + } + *count += n_bytes_found; + return(list); +} + +/* The same thing, but don't clear objects: */ +STATIC ptr_t GC_reclaim_uninit(struct hblk *hbp, hdr *hhdr, size_t sz, + ptr_t list, signed_word *count) +{ + word bit_no = 0; + word *p, *plim; + signed_word n_bytes_found = 0; + + GC_ASSERT(sz == hhdr -> hb_sz); + p = (word *)(hbp->hb_body); + plim = (word *)((ptr_t)hbp + HBLKSIZE - sz); + + /* go through all words in block */ + while ((word)p <= (word)plim) { + if (!mark_bit_from_hdr(hhdr, bit_no)) { + n_bytes_found += sz; + /* object is available - put on list */ + obj_link(p) = list; + list = ((ptr_t)p); + } + p = (word *)((ptr_t)p + sz); + bit_no += MARK_BIT_OFFSET(sz); + } + *count += n_bytes_found; + return(list); +} + +#ifdef ENABLE_DISCLAIM + /* Call reclaim notifier for block's kind on each unmarked object in */ + /* block, all within a pair of corresponding enter/leave callbacks. */ + STATIC ptr_t GC_disclaim_and_reclaim(struct hblk *hbp, hdr *hhdr, size_t sz, + ptr_t list, signed_word *count) + { + word bit_no = 0; + word *p, *q, *plim; + signed_word n_bytes_found = 0; + struct obj_kind *ok = &GC_obj_kinds[hhdr->hb_obj_kind]; + int (GC_CALLBACK *disclaim)(void *) = ok->ok_disclaim_proc; + + GC_ASSERT(sz == hhdr -> hb_sz); + p = (word *)(hbp -> hb_body); + plim = (word *)((ptr_t)p + HBLKSIZE - sz); + + while ((word)p <= (word)plim) { + int marked = mark_bit_from_hdr(hhdr, bit_no); + if (!marked && (*disclaim)(p)) { + hhdr -> hb_n_marks++; + marked = 1; + } + if (marked) + p = (word *)((ptr_t)p + sz); + else { + n_bytes_found += sz; + /* object is available - put on list */ + obj_link(p) = list; + list = ((ptr_t)p); + /* Clear object, advance p to next object in the process */ + q = (word *)((ptr_t)p + sz); +# ifdef USE_MARK_BYTES + GC_ASSERT((sz & 1) == 0); + GC_ASSERT(((word)p & (2 * sizeof(word) - 1)) == 0); + p[1] = 0; + p += 2; + while ((word)p < (word)q) { + CLEAR_DOUBLE(p); + p += 2; + } +# else + p++; /* Skip link field */ + while ((word)p < (word)q) { + *p++ = 0; + } +# endif + } + bit_no += MARK_BIT_OFFSET(sz); + } + *count += n_bytes_found; + return list; + } +#endif /* ENABLE_DISCLAIM */ + +/* Don't really reclaim objects, just check for unmarked ones: */ +STATIC void GC_reclaim_check(struct hblk *hbp, hdr *hhdr, word sz) +{ + word bit_no; + ptr_t p, plim; + GC_ASSERT(sz == hhdr -> hb_sz); + + /* go through all words in block */ + p = hbp->hb_body; + plim = p + HBLKSIZE - sz; + for (bit_no = 0; (word)p <= (word)plim; + p += sz, bit_no += MARK_BIT_OFFSET(sz)) { + if (!mark_bit_from_hdr(hhdr, bit_no)) { + GC_add_leaked(p); + } + } +} + +/* + * Generic procedure to rebuild a free list in hbp. + * Also called directly from GC_malloc_many. + * Sz is now in bytes. + */ +GC_INNER ptr_t GC_reclaim_generic(struct hblk * hbp, hdr *hhdr, size_t sz, + GC_bool init, ptr_t list, + signed_word *count) +{ + ptr_t result; + + GC_ASSERT(GC_find_header((ptr_t)hbp) == hhdr); +# ifndef GC_DISABLE_INCREMENTAL + GC_remove_protection(hbp, 1, (hhdr)->hb_descr == 0 /* Pointer-free? */); +# endif +# ifdef ENABLE_DISCLAIM + if ((hhdr -> hb_flags & HAS_DISCLAIM) != 0) { + result = GC_disclaim_and_reclaim(hbp, hhdr, sz, list, count); + } else +# endif + /* else */ if (init || GC_debugging_started) { + result = GC_reclaim_clear(hbp, hhdr, sz, list, count); + } else { + GC_ASSERT((hhdr)->hb_descr == 0 /* Pointer-free block */); + result = GC_reclaim_uninit(hbp, hhdr, sz, list, count); + } + if (IS_UNCOLLECTABLE(hhdr -> hb_obj_kind)) GC_set_hdr_marks(hhdr); + return result; +} + +/* + * Restore unmarked small objects in the block pointed to by hbp + * to the appropriate object free list. + * If entirely empty blocks are to be completely deallocated, then + * caller should perform that check. + */ +STATIC void GC_reclaim_small_nonempty_block(struct hblk *hbp, + GC_bool report_if_found) +{ + hdr *hhdr = HDR(hbp); + size_t sz = hhdr -> hb_sz; + struct obj_kind * ok = &GC_obj_kinds[hhdr -> hb_obj_kind]; + void **flh = &(ok -> ok_freelist[BYTES_TO_GRANULES(sz)]); + + hhdr -> hb_last_reclaimed = (unsigned short) GC_gc_no; + + if (report_if_found) { + GC_reclaim_check(hbp, hhdr, sz); + } else { + *flh = GC_reclaim_generic(hbp, hhdr, sz, ok -> ok_init, + *flh, &GC_bytes_found); + } +} + +#ifdef ENABLE_DISCLAIM + STATIC void GC_disclaim_and_reclaim_or_free_small_block(struct hblk *hbp) + { + hdr *hhdr = HDR(hbp); + size_t sz = hhdr -> hb_sz; + struct obj_kind * ok = &GC_obj_kinds[hhdr -> hb_obj_kind]; + void **flh = &(ok -> ok_freelist[BYTES_TO_GRANULES(sz)]); + void *flh_next; + + hhdr -> hb_last_reclaimed = (unsigned short) GC_gc_no; + flh_next = GC_reclaim_generic(hbp, hhdr, sz, ok -> ok_init, + *flh, &GC_bytes_found); + if (hhdr -> hb_n_marks) + *flh = flh_next; + else { + GC_bytes_found += HBLKSIZE; + GC_freehblk(hbp); + } + } +#endif /* ENABLE_DISCLAIM */ + +/* + * Restore an unmarked large object or an entirely empty blocks of small objects + * to the heap block free list. + * Otherwise enqueue the block for later processing + * by GC_reclaim_small_nonempty_block. + * If report_if_found is TRUE, then process any block immediately, and + * simply report free objects; do not actually reclaim them. + */ +STATIC void GC_reclaim_block(struct hblk *hbp, word report_if_found) +{ + hdr * hhdr = HDR(hbp); + size_t sz = hhdr -> hb_sz; /* size of objects in current block */ + struct obj_kind * ok = &GC_obj_kinds[hhdr -> hb_obj_kind]; + + if( sz > MAXOBJBYTES ) { /* 1 big object */ + if( !mark_bit_from_hdr(hhdr, 0) ) { + if (report_if_found) { + GC_add_leaked((ptr_t)hbp); + } else { + size_t blocks; + +# ifdef ENABLE_DISCLAIM + if (EXPECT(hhdr->hb_flags & HAS_DISCLAIM, 0)) { + struct obj_kind *ok = &GC_obj_kinds[hhdr->hb_obj_kind]; + if ((*ok->ok_disclaim_proc)(hbp)) { + /* Not disclaimed => resurrect the object. */ + set_mark_bit_from_hdr(hhdr, 0); + goto in_use; + } + } +# endif + blocks = OBJ_SZ_TO_BLOCKS(sz); + if (blocks > 1) { + GC_large_allocd_bytes -= blocks * HBLKSIZE; + } + GC_bytes_found += sz; + GC_freehblk(hbp); + } + } else { +# ifdef ENABLE_DISCLAIM + in_use: +# endif + if (hhdr -> hb_descr != 0) { + GC_composite_in_use += sz; + } else { + GC_atomic_in_use += sz; + } + } + } else { + GC_bool empty = GC_block_empty(hhdr); +# ifdef PARALLEL_MARK + /* Count can be low or one too high because we sometimes */ + /* have to ignore decrements. Objects can also potentially */ + /* be repeatedly marked by each marker. */ + /* Here we assume two markers, but this is extremely */ + /* unlikely to fail spuriously with more. And if it does, it */ + /* should be looked at. */ + GC_ASSERT(hhdr -> hb_n_marks <= 2 * (HBLKSIZE/sz + 1) + 16); +# else + GC_ASSERT(sz * hhdr -> hb_n_marks <= HBLKSIZE); +# endif + if (report_if_found) { + GC_reclaim_small_nonempty_block(hbp, TRUE /* report_if_found */); + } else if (empty) { +# ifdef ENABLE_DISCLAIM + if ((hhdr -> hb_flags & HAS_DISCLAIM) != 0) { + GC_disclaim_and_reclaim_or_free_small_block(hbp); + } else +# endif + /* else */ { + GC_bytes_found += HBLKSIZE; + GC_freehblk(hbp); + } + } else if (GC_find_leak || !GC_block_nearly_full(hhdr)) { + /* group of smaller objects, enqueue the real work */ + struct hblk **rlh = ok -> ok_reclaim_list; + + if (rlh != NULL) { + rlh += BYTES_TO_GRANULES(sz); + hhdr -> hb_next = *rlh; + *rlh = hbp; + } + } /* else not worth salvaging. */ + /* We used to do the nearly_full check later, but we */ + /* already have the right cache context here. Also */ + /* doing it here avoids some silly lock contention in */ + /* GC_malloc_many. */ + + if (hhdr -> hb_descr != 0) { + GC_composite_in_use += sz * hhdr -> hb_n_marks; + } else { + GC_atomic_in_use += sz * hhdr -> hb_n_marks; + } + } +} + +#if !defined(NO_DEBUGGING) +/* Routines to gather and print heap block info */ +/* intended for debugging. Otherwise should be called */ +/* with lock. */ + +struct Print_stats +{ + size_t number_of_blocks; + size_t total_bytes; +}; + +#ifdef USE_MARK_BYTES + +/* Return the number of set mark bits in the given header. */ +/* Remains externally visible as used by GNU GCJ currently. */ +int GC_n_set_marks(hdr *hhdr) +{ + int result = 0; + int i; + size_t sz = hhdr -> hb_sz; + int offset = (int)MARK_BIT_OFFSET(sz); + int limit = (int)FINAL_MARK_BIT(sz); + + for (i = 0; i < limit; i += offset) { + result += hhdr -> hb_marks[i]; + } + GC_ASSERT(hhdr -> hb_marks[limit]); + return(result); +} + +#else + +/* Number of set bits in a word. Not performance critical. */ +static int set_bits(word n) +{ + word m = n; + int result = 0; + + while (m > 0) { + if (m & 1) result++; + m >>= 1; + } + return(result); +} + +int GC_n_set_marks(hdr *hhdr) +{ + int result = 0; + int i; + int n_mark_words; +# ifdef MARK_BIT_PER_OBJ + int n_objs = (int)HBLK_OBJS(hhdr -> hb_sz); + + if (0 == n_objs) n_objs = 1; + n_mark_words = divWORDSZ(n_objs + WORDSZ - 1); +# else /* MARK_BIT_PER_GRANULE */ + n_mark_words = MARK_BITS_SZ; +# endif + for (i = 0; i < n_mark_words - 1; i++) { + result += set_bits(hhdr -> hb_marks[i]); + } +# ifdef MARK_BIT_PER_OBJ + result += set_bits((hhdr -> hb_marks[n_mark_words - 1]) + << (n_mark_words * WORDSZ - n_objs)); +# else + result += set_bits(hhdr -> hb_marks[n_mark_words - 1]); +# endif + return(result - 1); +} + +#endif /* !USE_MARK_BYTES */ + +STATIC void GC_print_block_descr(struct hblk *h, + word /* struct PrintStats */ raw_ps) +{ + hdr * hhdr = HDR(h); + size_t bytes = hhdr -> hb_sz; + struct Print_stats *ps; + unsigned n_marks = GC_n_set_marks(hhdr); + unsigned n_objs = (unsigned)HBLK_OBJS(bytes); + + if (0 == n_objs) n_objs = 1; + if (hhdr -> hb_n_marks != n_marks) { + GC_printf("%u,%u,%u!=%u,%u\n", hhdr->hb_obj_kind, (unsigned)bytes, + (unsigned)hhdr->hb_n_marks, n_marks, n_objs); + } else { + GC_printf("%u,%u,%u,%u\n", hhdr->hb_obj_kind, (unsigned)bytes, + n_marks, n_objs); + } + + ps = (struct Print_stats *)raw_ps; + ps->total_bytes += (bytes + (HBLKSIZE-1)) & ~(HBLKSIZE-1); /* round up */ + ps->number_of_blocks++; +} + +void GC_print_block_list(void) +{ + struct Print_stats pstats; + + GC_printf("kind(0=ptrfree,1=normal,2=unc.)," + "size_in_bytes,#_marks_set,#objs\n"); + pstats.number_of_blocks = 0; + pstats.total_bytes = 0; + GC_apply_to_all_blocks(GC_print_block_descr, (word)&pstats); + GC_printf("blocks= %lu, bytes= %lu\n", + (unsigned long)pstats.number_of_blocks, + (unsigned long)pstats.total_bytes); +} + +#include "gc_inline.h" /* for GC_print_free_list prototype */ + +/* Currently for debugger use only: */ +GC_API void GC_CALL GC_print_free_list(int kind, size_t sz_in_granules) +{ + ptr_t flh; + int n; + + GC_ASSERT(kind < MAXOBJKINDS); + GC_ASSERT(sz_in_granules <= MAXOBJGRANULES); + flh = GC_obj_kinds[kind].ok_freelist[sz_in_granules]; + for (n = 0; flh; n++) { + struct hblk *block = HBLKPTR(flh); + GC_printf("Free object in heap block %p [%d]: %p\n", + (void *)block, n, (void *)flh); + flh = obj_link(flh); + } +} + +#endif /* !NO_DEBUGGING */ + +/* + * Clear all obj_link pointers in the list of free objects *flp. + * Clear *flp. + * This must be done before dropping a list of free gcj-style objects, + * since may otherwise end up with dangling "descriptor" pointers. + * It may help for other pointer-containing objects. + */ +STATIC void GC_clear_fl_links(void **flp) +{ + void *next = *flp; + + while (0 != next) { + *flp = 0; + flp = &(obj_link(next)); + next = *flp; + } +} + +/* + * Perform GC_reclaim_block on the entire heap, after first clearing + * small object free lists (if we are not just looking for leaks). + */ +GC_INNER void GC_start_reclaim(GC_bool report_if_found) +{ + unsigned kind; + +# if defined(PARALLEL_MARK) + GC_ASSERT(0 == GC_fl_builder_count); +# endif + /* Reset in use counters. GC_reclaim_block recomputes them. */ + GC_composite_in_use = 0; + GC_atomic_in_use = 0; + /* Clear reclaim- and free-lists */ + for (kind = 0; kind < GC_n_kinds; kind++) { + struct hblk ** rlist = GC_obj_kinds[kind].ok_reclaim_list; + GC_bool should_clobber = (GC_obj_kinds[kind].ok_descriptor != 0); + + if (rlist == 0) continue; /* This kind not used. */ + if (!report_if_found) { + void **fop; + void **lim = &(GC_obj_kinds[kind].ok_freelist[MAXOBJGRANULES+1]); + + for (fop = GC_obj_kinds[kind].ok_freelist; + (word)fop < (word)lim; (*(word **)&fop)++) { + if (*fop != 0) { + if (should_clobber) { + GC_clear_fl_links(fop); + } else { + *fop = 0; + } + } + } + } /* otherwise free list objects are marked, */ + /* and its safe to leave them */ + BZERO(rlist, (MAXOBJGRANULES + 1) * sizeof(void *)); + } + + + /* Go through all heap blocks (in hblklist) and reclaim unmarked objects */ + /* or enqueue the block for later processing. */ + GC_apply_to_all_blocks(GC_reclaim_block, (word)report_if_found); + +# ifdef EAGER_SWEEP + /* This is a very stupid thing to do. We make it possible anyway, */ + /* so that you can convince yourself that it really is very stupid. */ + GC_reclaim_all((GC_stop_func)0, FALSE); +# elif defined(ENABLE_DISCLAIM) + /* However, make sure to clear reclaimable objects of kinds with */ + /* unconditional marking enabled before we do any significant */ + /* marking work. */ + GC_reclaim_unconditionally_marked(); +# endif +# if defined(PARALLEL_MARK) + GC_ASSERT(0 == GC_fl_builder_count); +# endif + +} + +/* + * Sweep blocks of the indicated object size and kind until either the + * appropriate free list is nonempty, or there are no more blocks to + * sweep. + */ +GC_INNER void GC_continue_reclaim(size_t sz /* granules */, int kind) +{ + hdr * hhdr; + struct hblk * hbp; + struct obj_kind * ok = &(GC_obj_kinds[kind]); + struct hblk ** rlh = ok -> ok_reclaim_list; + void **flh = &(ok -> ok_freelist[sz]); + + if (rlh == 0) return; /* No blocks of this kind. */ + rlh += sz; + while ((hbp = *rlh) != 0) { + hhdr = HDR(hbp); + *rlh = hhdr -> hb_next; + GC_reclaim_small_nonempty_block(hbp, FALSE); + if (*flh != 0) break; + } +} + +/* + * Reclaim all small blocks waiting to be reclaimed. + * Abort and return FALSE when/if (*stop_func)() returns TRUE. + * If this returns TRUE, then it's safe to restart the world + * with incorrectly cleared mark bits. + * If ignore_old is TRUE, then reclaim only blocks that have been + * recently reclaimed, and discard the rest. + * Stop_func may be 0. + */ +GC_INNER GC_bool GC_reclaim_all(GC_stop_func stop_func, GC_bool ignore_old) +{ + word sz; + unsigned kind; + hdr * hhdr; + struct hblk * hbp; + struct obj_kind * ok; + struct hblk ** rlp; + struct hblk ** rlh; +# ifndef SMALL_CONFIG + CLOCK_TYPE start_time = 0; /* initialized to prevent warning. */ + + if (GC_print_stats == VERBOSE) + GET_TIME(start_time); +# endif + + for (kind = 0; kind < GC_n_kinds; kind++) { + ok = &(GC_obj_kinds[kind]); + rlp = ok -> ok_reclaim_list; + if (rlp == 0) continue; + for (sz = 1; sz <= MAXOBJGRANULES; sz++) { + rlh = rlp + sz; + while ((hbp = *rlh) != 0) { + if (stop_func != (GC_stop_func)0 && (*stop_func)()) { + return(FALSE); + } + hhdr = HDR(hbp); + *rlh = hhdr -> hb_next; + if (!ignore_old || hhdr -> hb_last_reclaimed == GC_gc_no - 1) { + /* It's likely we'll need it this time, too */ + /* It's been touched recently, so this */ + /* shouldn't trigger paging. */ + GC_reclaim_small_nonempty_block(hbp, FALSE); + } + } + } + } +# ifndef SMALL_CONFIG + if (GC_print_stats == VERBOSE) { + CLOCK_TYPE done_time; + + GET_TIME(done_time); + GC_verbose_log_printf("Disposing of reclaim lists took %lu msecs\n", + MS_TIME_DIFF(done_time,start_time)); + } +# endif + return(TRUE); +} + +#if !defined(EAGER_SWEEP) && defined(ENABLE_DISCLAIM) +/* We do an eager sweep on heap blocks where unconditional marking has */ +/* been enabled, so that any reclaimable objects have been reclaimed */ +/* before we start marking. This is a simplified GC_reclaim_all */ +/* restricted to kinds where ok_mark_unconditionally is true. */ + STATIC void GC_reclaim_unconditionally_marked(void) + { + word sz; + unsigned kind; + hdr * hhdr; + struct hblk * hbp; + struct obj_kind * ok; + struct hblk ** rlp; + struct hblk ** rlh; + + for (kind = 0; kind < GC_n_kinds; kind++) { + ok = &(GC_obj_kinds[kind]); + if (!ok->ok_mark_unconditionally) + continue; + rlp = ok->ok_reclaim_list; + if (rlp == 0) + continue; + for (sz = 1; sz <= MAXOBJGRANULES; sz++) { + rlh = rlp + sz; + while ((hbp = *rlh) != 0) { + hhdr = HDR(hbp); + *rlh = hhdr->hb_next; + GC_reclaim_small_nonempty_block(hbp, FALSE); + } + } + } + } +#endif /* !EAGER_SWEEP && ENABLE_DISCLAIM */ + +struct enumerate_reachable_s { + GC_reachable_object_proc proc; + void *client_data; +}; + +STATIC void GC_do_enumerate_reachable_objects(struct hblk *hbp, word ped) +{ + struct hblkhdr *hhdr = HDR(hbp); + size_t sz = hhdr -> hb_sz; + size_t bit_no; + char *p, *plim; + + if (GC_block_empty(hhdr)) { + return; + } + + p = hbp->hb_body; + if (sz > MAXOBJBYTES) { /* one big object */ + plim = p; + } else { + plim = hbp->hb_body + HBLKSIZE - sz; + } + /* Go through all words in block. */ + for (bit_no = 0; p <= plim; bit_no += MARK_BIT_OFFSET(sz), p += sz) { + if (mark_bit_from_hdr(hhdr, bit_no)) { + ((struct enumerate_reachable_s *)ped)->proc(p, sz, + ((struct enumerate_reachable_s *)ped)->client_data); + } + } +} + +GC_API void GC_CALL GC_enumerate_reachable_objects_inner( + GC_reachable_object_proc proc, + void *client_data) +{ + struct enumerate_reachable_s ed; + + GC_ASSERT(I_HOLD_LOCK()); + ed.proc = proc; + ed.client_data = client_data; + GC_apply_to_all_blocks(GC_do_enumerate_reachable_objects, (word)&ed); +} diff --git a/sparc_mach_dep.S b/sparc_mach_dep.S new file mode 100644 index 0000000..d204dc4 --- /dev/null +++ b/sparc_mach_dep.S @@ -0,0 +1,61 @@ +! SPARCompiler 3.0 and later apparently no longer handles +! asm outside functions. So we need a separate .s file +! This is only set up for SunOS 5, not SunOS 4. +! Assumes this is called before the stack contents are +! examined. + + .seg "text" + .globl GC_save_regs_in_stack +GC_save_regs_in_stack: +#if defined(__arch64__) || defined(__sparcv9) + save %sp,-128,%sp + flushw + ret + restore %sp,2047+128,%o0 +#else /* 32 bit SPARC */ + ta 0x3 ! ST_FLUSH_WINDOWS + mov %sp,%o0 + retl + nop +#endif /* 32 bit SPARC */ +.GC_save_regs_in_stack_end: + .size GC_save_regs_in_stack,.GC_save_regs_in_stack_end-GC_save_regs_in_stack + +! GC_clear_stack_inner(arg, limit) clears stack area up to limit and +! returns arg. Stack clearing is crucial on SPARC, so we supply +! an assembly version that s more careful. Assumes limit is hotter +! than sp, and limit is 8 byte aligned. + .globl GC_clear_stack_inner +GC_clear_stack_inner: +#if defined(__arch64__) || defined(__sparcv9) + mov %sp,%o2 ! Save sp + add %sp,2047-8,%o3 ! p = sp+bias-8 + add %o1,-2047-192,%sp ! Move sp out of the way, + ! so that traps still work. + ! Includes some extra words + ! so we can be sloppy below. +loop: + stx %g0,[%o3] ! *(long *)p = 0 + cmp %o3,%o1 + bgu,pt %xcc, loop ! if (p > limit) goto loop + add %o3,-8,%o3 ! p -= 8 (delay slot) + retl + mov %o2,%sp ! Restore sp., delay slot +#else /* 32 bit SPARC */ + mov %sp,%o2 ! Save sp + add %sp,-8,%o3 ! p = sp-8 + clr %g1 ! [g0,g1] = 0 + add %o1,-0x60,%sp ! Move sp out of the way, + ! so that traps still work. + ! Includes some extra words + ! so we can be sloppy below. +loop: + std %g0,[%o3] ! *(long long *)p = 0 + cmp %o3,%o1 + bgu loop ! if (p > limit) goto loop + add %o3,-8,%o3 ! p -= 8 (delay slot) + retl + mov %o2,%sp ! Restore sp., delay slot +#endif /* 32 bit SPARC */ +.GC_clear_stack_inner_end: + .size GC_clear_stack_inner,.GC_clear_stack_inner_end-GC_clear_stack_inner diff --git a/sparc_netbsd_mach_dep.s b/sparc_netbsd_mach_dep.s new file mode 100644 index 0000000..14feb15 --- /dev/null +++ b/sparc_netbsd_mach_dep.s @@ -0,0 +1,34 @@ +! SPARCompiler 3.0 and later apparently no longer handles +! asm outside functions. So we need a separate .s file +! This is only set up for SunOS 4. +! Assumes this is called before the stack contents are +! examined. + +#include "machine/asm.h" + + .seg "text" + .globl _C_LABEL(GC_save_regs_in_stack) + .globl _C_LABEL(GC_push_regs) +_C_LABEL(GC_save_regs_in_stack): +_C_LABEL(GC_push_regs): + ta 0x3 ! ST_FLUSH_WINDOWS + mov %sp,%o0 + retl + nop + + .globl _C_LABEL(GC_clear_stack_inner) +_C_LABEL(GC_clear_stack_inner): + mov %sp,%o2 ! Save sp + add %sp,-8,%o3 ! p = sp-8 + clr %g1 ! [g0,g1] = 0 + add %o1,-0x60,%sp ! Move sp out of the way, + ! so that traps still work. + ! Includes some extra words + ! so we can be sloppy below. +loop: + std %g0,[%o3] ! *(long long *)p = 0 + cmp %o3,%o1 + bgu loop ! if (p > limit) goto loop + add %o3,-8,%o3 ! p -= 8 (delay slot) + retl + mov %o2,%sp ! Restore sp., delay slot diff --git a/sparc_sunos4_mach_dep.s b/sparc_sunos4_mach_dep.s new file mode 100644 index 0000000..923f5ea --- /dev/null +++ b/sparc_sunos4_mach_dep.s @@ -0,0 +1,32 @@ +! SPARCompiler 3.0 and later apparently no longer handles +! asm outside functions. So we need a separate .s file +! This is only set up for SunOS 4. +! Assumes this is called before the stack contents are +! examined. + + .seg "text" + .globl _GC_save_regs_in_stack + .globl _GC_push_regs +_GC_save_regs_in_stack: +_GC_push_regs: + ta 0x3 ! ST_FLUSH_WINDOWS + mov %sp,%o0 + retl + nop + + .globl _GC_clear_stack_inner +_GC_clear_stack_inner: + mov %sp,%o2 ! Save sp + add %sp,-8,%o3 ! p = sp-8 + clr %g1 ! [g0,g1] = 0 + add %o1,-0x60,%sp ! Move sp out of the way, + ! so that traps still work. + ! Includes some extra words + ! so we can be sloppy below. +loop: + std %g0,[%o3] ! *(long long *)p = 0 + cmp %o3,%o1 + bgu loop ! if (p > limit) goto loop + add %o3,-8,%o3 ! p -= 8 (delay slot) + retl + mov %o2,%sp ! Restore sp., delay slot diff --git a/specific.c b/specific.c new file mode 100644 index 0000000..eca2d93 --- /dev/null +++ b/specific.c @@ -0,0 +1,178 @@ +/* + * Copyright (c) 2000 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/thread_local_alloc.h" + /* To determine type of tsd impl. */ + /* Includes private/specific.h */ + /* if needed. */ + +#if defined(USE_CUSTOM_SPECIFIC) + +static const tse invalid_tse = {INVALID_QTID, 0, 0, INVALID_THREADID}; + /* A thread-specific data entry which will never */ + /* appear valid to a reader. Used to fill in empty */ + /* cache entries to avoid a check for 0. */ + +GC_INNER int GC_key_create_inner(tsd ** key_ptr) +{ + int i; + int ret; + tsd * result = (tsd *)MALLOC_CLEAR(sizeof(tsd)); + + /* A quick alignment check, since we need atomic stores */ + GC_ASSERT((word)(&invalid_tse.next) % sizeof(tse *) == 0); + if (0 == result) return ENOMEM; + ret = pthread_mutex_init(&result->lock, NULL); + if (ret != 0) return ret; + for (i = 0; i < TS_CACHE_SIZE; ++i) { + result -> cache[i] = (/* no const */ tse *)&invalid_tse; + } +# ifdef GC_ASSERTIONS + for (i = 0; i < TS_HASH_SIZE; ++i) { + GC_ASSERT(result -> hash[i].p == 0); + } +# endif + *key_ptr = result; + return 0; +} + +GC_INNER int GC_setspecific(tsd * key, void * value) +{ + pthread_t self = pthread_self(); + int hash_val = HASH(self); + volatile tse * entry; + + GC_ASSERT(I_HOLD_LOCK()); + GC_ASSERT(self != INVALID_THREADID); + GC_dont_gc++; /* disable GC */ + entry = (volatile tse *)MALLOC_CLEAR(sizeof(tse)); + GC_dont_gc--; + if (0 == entry) return ENOMEM; + + pthread_mutex_lock(&(key -> lock)); + /* Could easily check for an existing entry here. */ + entry -> next = key->hash[hash_val].p; + entry -> thread = self; + entry -> value = value; + GC_ASSERT(entry -> qtid == INVALID_QTID); + /* There can only be one writer at a time, but this needs to be */ + /* atomic with respect to concurrent readers. */ + AO_store_release(&key->hash[hash_val].ao, (AO_t)entry); + pthread_mutex_unlock(&(key -> lock)); + return 0; +} + +/* Remove thread-specific data for a given thread. This function is */ +/* called at fork from the child process for all threads except for the */ +/* survived one. GC_remove_specific() should be called on thread exit. */ +GC_INNER void GC_remove_specific_after_fork(tsd * key, pthread_t t) +{ + unsigned hash_val = HASH(t); + tse *entry; + tse **link = &key->hash[hash_val].p; + +# ifdef CAN_HANDLE_FORK + /* Both GC_setspecific and GC_remove_specific should be called */ + /* with the allocation lock held to ensure the consistency of */ + /* the hash table in the forked child. */ + GC_ASSERT(I_HOLD_LOCK()); +# endif + pthread_mutex_lock(&(key -> lock)); + entry = *link; + while (entry != NULL && entry -> thread != t) { + link = &(entry -> next); + entry = *link; + } + /* Invalidate qtid field, since qtids may be reused, and a later */ + /* cache lookup could otherwise find this entry. */ + if (entry != NULL) { + entry -> qtid = INVALID_QTID; + *link = entry -> next; + /* Atomic! concurrent accesses still work. */ + /* They must, since readers don't lock. */ + /* We shouldn't need a volatile access here, */ + /* since both this and the preceding write */ + /* should become visible no later than */ + /* the pthread_mutex_unlock() call. */ + } + /* If we wanted to deallocate the entry, we'd first have to clear */ + /* any cache entries pointing to it. That probably requires */ + /* additional synchronization, since we can't prevent a concurrent */ + /* cache lookup, which should still be examining deallocated memory.*/ + /* This can only happen if the concurrent access is from another */ + /* thread, and hence has missed the cache, but still... */ +# ifdef LINT2 + GC_noop1((word)entry); +# endif + + /* With GC, we're done, since the pointers from the cache will */ + /* be overwritten, all local pointers to the entries will be */ + /* dropped, and the entry will then be reclaimed. */ + pthread_mutex_unlock(&(key -> lock)); +} + +/* Note that even the slow path doesn't lock. */ +GC_INNER void * GC_slow_getspecific(tsd * key, word qtid, + tse * volatile * cache_ptr) +{ + pthread_t self = pthread_self(); + unsigned hash_val = HASH(self); + tse *entry = key->hash[hash_val].p; + + GC_ASSERT(qtid != INVALID_QTID); + while (entry != NULL && entry -> thread != self) { + entry = entry -> next; + } + if (entry == NULL) return NULL; + /* Set cache_entry. */ + entry -> qtid = (AO_t)qtid; + /* It's safe to do this asynchronously. Either value */ + /* is safe, though may produce spurious misses. */ + /* We're replacing one qtid with another one for the */ + /* same thread. */ + *cache_ptr = entry; + /* Again this is safe since pointer assignments are */ + /* presumed atomic, and either pointer is valid. */ + return entry -> value; +} + +#ifdef GC_ASSERTIONS + /* Check that that all elements of the data structure associated */ + /* with key are marked. */ + void GC_check_tsd_marks(tsd *key) + { + int i; + tse *p; + + if (!GC_is_marked(GC_base(key))) { + ABORT("Unmarked thread-specific-data table"); + } + for (i = 0; i < TS_HASH_SIZE; ++i) { + for (p = key->hash[i].p; p != 0; p = p -> next) { + if (!GC_is_marked(GC_base(p))) { + ABORT_ARG1("Unmarked thread-specific-data entry", + " at %p", (void *)p); + } + } + } + for (i = 0; i < TS_CACHE_SIZE; ++i) { + p = key -> cache[i]; + if (p != &invalid_tse && !GC_is_marked(GC_base(p))) { + ABORT_ARG1("Unmarked cached thread-specific-data entry", + " at %p", (void *)p); + } + } + } +#endif /* GC_ASSERTIONS */ + +#endif /* USE_CUSTOM_SPECIFIC */ diff --git a/stubborn.c b/stubborn.c new file mode 100644 index 0000000..cc5d08a --- /dev/null +++ b/stubborn.c @@ -0,0 +1,56 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +#if defined(MANUAL_VDB) + + /* Stubborn object (hard to change, nearly immutable) allocation. */ + /* This interface is deprecated. We mostly emulate it using */ + /* MANUAL_VDB. But that imposes the additional constraint that */ + /* written, but not yet GC_dirty()ed objects must be referenced */ + /* by a stack. */ + + void GC_dirty(ptr_t p); + + GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_stubborn(size_t lb) + { + return(GC_malloc(lb)); + } + + GC_API void GC_CALL GC_end_stubborn_change(const void *p) + { + GC_dirty((ptr_t)p); + } + + GC_API void GC_CALL GC_change_stubborn(const void *p GC_ATTR_UNUSED) + { + } + +#else /* !MANUAL_VDB */ + + GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_stubborn(size_t lb) + { + return(GC_malloc(lb)); + } + + GC_API void GC_CALL GC_end_stubborn_change(const void *p GC_ATTR_UNUSED) + { + } + + GC_API void GC_CALL GC_change_stubborn(const void *p GC_ATTR_UNUSED) + { + } + +#endif /* !MANUAL_VDB */ diff --git a/test-driver b/test-driver new file mode 100755 index 0000000..8e575b0 --- /dev/null +++ b/test-driver @@ -0,0 +1,148 @@ +#! /bin/sh +# test-driver - basic testsuite driver script. + +scriptversion=2013-07-13.22; # UTC + +# Copyright (C) 2011-2014 Free Software Foundation, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that program. + +# This file is maintained in Automake, please report +# bugs to or send patches to +# . + +# Make unconditional expansion of undefined variables an error. This +# helps a lot in preventing typo-related bugs. +set -u + +usage_error () +{ + echo "$0: $*" >&2 + print_usage >&2 + exit 2 +} + +print_usage () +{ + cat <$log_file 2>&1 +estatus=$? + +if test $enable_hard_errors = no && test $estatus -eq 99; then + tweaked_estatus=1 +else + tweaked_estatus=$estatus +fi + +case $tweaked_estatus:$expect_failure in + 0:yes) col=$red res=XPASS recheck=yes gcopy=yes;; + 0:*) col=$grn res=PASS recheck=no gcopy=no;; + 77:*) col=$blu res=SKIP recheck=no gcopy=yes;; + 99:*) col=$mgn res=ERROR recheck=yes gcopy=yes;; + *:yes) col=$lgn res=XFAIL recheck=no gcopy=yes;; + *:*) col=$red res=FAIL recheck=yes gcopy=yes;; +esac + +# Report the test outcome and exit status in the logs, so that one can +# know whether the test passed or failed simply by looking at the '.log' +# file, without the need of also peaking into the corresponding '.trs' +# file (automake bug#11814). +echo "$res $test_name (exit status: $estatus)" >>$log_file + +# Report outcome to console. +echo "${col}${res}${std}: $test_name" + +# Register the test result, and other relevant metadata. +echo ":test-result: $res" > $trs_file +echo ":global-test-result: $res" >> $trs_file +echo ":recheck: $recheck" >> $trs_file +echo ":copy-in-global-log: $gcopy" >> $trs_file + +# Local Variables: +# mode: shell-script +# sh-indentation: 2 +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "scriptversion=" +# time-stamp-format: "%:y-%02m-%02d.%02H" +# time-stamp-time-zone: "UTC" +# time-stamp-end: "; # UTC" +# End: diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt new file mode 100644 index 0000000..2666349 --- /dev/null +++ b/tests/CMakeLists.txt @@ -0,0 +1,41 @@ +# +# Copyright (c) 1994 by Xerox Corporation. All rights reserved. +# Copyright (c) 1996 by Silicon Graphics. All rights reserved. +# Copyright (c) 1998 by Fergus Henderson. All rights reserved. +# Copyright (c) 2000-2010 by Hewlett-Packard Company. All rights reserved. +## +# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +# OR IMPLIED. ANY USE IS AT YOUR OWN RISK. +## +# Permission is hereby granted to use or copy this program +# for any purpose, provided the above notices are retained on all copies. +# Permission to modify the code and to distribute modified code is granted, +# provided the above notices are retained, and a notice that the code was +# modified is included with the above copyright notice. +## + +ADD_DEFINITIONS(-DGC_NOT_DLL) + +ADD_EXECUTABLE(gctest WIN32 test.c) +TARGET_LINK_LIBRARIES(gctest gc-lib) +ADD_TEST(NAME gctest COMMAND gctest) + +ADD_EXECUTABLE(hugetest huge_test.c) +TARGET_LINK_LIBRARIES(hugetest gc-lib) +ADD_TEST(NAME hugetest COMMAND hugetest) + +ADD_EXECUTABLE(leaktest leak_test.c) +TARGET_LINK_LIBRARIES(leaktest gc-lib) +ADD_TEST(NAME leaktest COMMAND leaktest) + +ADD_EXECUTABLE(middletest middle.c) +TARGET_LINK_LIBRARIES(middletest gc-lib) +ADD_TEST(NAME middletest COMMAND middletest) + +ADD_EXECUTABLE(realloc_test realloc_test.c) +TARGET_LINK_LIBRARIES(realloc_test gc-lib) +ADD_TEST(NAME realloc_test COMMAND realloc_test) + +ADD_EXECUTABLE(smashtest smash_test.c) +TARGET_LINK_LIBRARIES(smashtest gc-lib) +ADD_TEST(NAME smashtest COMMAND smashtest) diff --git a/tests/disclaim_bench.c b/tests/disclaim_bench.c new file mode 100644 index 0000000..cf95232 --- /dev/null +++ b/tests/disclaim_bench.c @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2011 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +#include +#include +#include + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include "gc_disclaim.h" + +/* Include gc_priv.h is done after including GC public headers, so */ +/* that GC_BUILD has no effect on the public prototypes. */ +#include "private/gc_priv.h" /* for CLOCK_TYPE, COVERT_DATAFLOW, GC_random */ + +#ifdef LINT2 +# undef rand +# define rand() (int)GC_random() +#endif + +#define my_assert(e) \ + if (!(e)) { \ + fprintf(stderr, "Assertion failure, line %d: " #e "\n", __LINE__); \ + exit(-1); \ + } + +static int free_count = 0; + +struct testobj_s { + struct testobj_s *keep_link; + int i; +}; + +typedef struct testobj_s *testobj_t; + +void GC_CALLBACK testobj_finalize(void *obj, void *carg) +{ + ++*(int *)carg; + my_assert(((testobj_t)obj)->i == 109); + ((testobj_t)obj)->i = 110; +} + +static const struct GC_finalizer_closure fclos = { + testobj_finalize, + &free_count +}; + +testobj_t testobj_new(int model) +{ + testobj_t obj; + switch (model) { + case 0: + obj = GC_MALLOC(sizeof(struct testobj_s)); + if (obj != NULL) + GC_REGISTER_FINALIZER_NO_ORDER(obj, testobj_finalize, + &free_count, NULL, NULL); + break; + case 1: + obj = GC_finalized_malloc(sizeof(struct testobj_s), &fclos); + break; + case 2: + obj = GC_MALLOC(sizeof(struct testobj_s)); + break; + default: + exit(-1); + } + if (obj == NULL) { + fprintf(stderr, "Out of memory!\n"); + exit(3); + } + my_assert(obj->i == 0 && obj->keep_link == NULL); + obj->i = 109; + return obj; +} + +#define ALLOC_CNT (4*1024*1024) +#define KEEP_CNT (32*1024) + +static char const *model_str[3] = { + "regular finalization", + "finalize on reclaim", + "no finalization" +}; + +int main(int argc, char **argv) +{ + int i; + int model, model_min, model_max; + testobj_t *keep_arr; + + GC_INIT(); + GC_init_finalized_malloc(); + if (argc == 2 && strcmp(argv[1], "--help") == 0) { + fprintf(stderr, + "Usage: %s [FINALIZATION_MODEL]\n" + "\t0 -- original finalization\n" + "\t1 -- finalization on reclaim\n" + "\t2 -- no finalization\n", argv[0]); + return 1; + } + if (argc == 2) { + model_min = model_max = (int)COVERT_DATAFLOW(atoi(argv[1])); + if (model_min < 0 || model_max > 2) + exit(2); + } + else { + model_min = 0; + model_max = 2; + } + + keep_arr = GC_MALLOC(sizeof(void *) * KEEP_CNT); + if (NULL == keep_arr) { + fprintf(stderr, "Out of memory!\n"); + exit(3); + } + + printf("\t\t\tfin. ratio time/s time/fin.\n"); + for (model = model_min; model <= model_max; ++model) { + double t = 0.0; +# ifndef NO_CLOCK + CLOCK_TYPE tI, tF; + + GET_TIME(tI); +# endif + free_count = 0; + for (i = 0; i < ALLOC_CNT; ++i) { + int k = rand() % KEEP_CNT; + keep_arr[k] = testobj_new(model); + } + GC_gcollect(); +# ifndef NO_CLOCK + GET_TIME(tF); + t = MS_TIME_DIFF(tF, tI)*1e-3; +# endif + + if (model < 2 && free_count > 0) + printf("%20s: %12.4f %12g %12g\n", model_str[model], + free_count/(double)ALLOC_CNT, t, t/free_count); + else + printf("%20s: %12.4f %12g %12s\n", + model_str[model], 0.0, t, "N/A"); + } + return 0; +} diff --git a/tests/disclaim_test.c b/tests/disclaim_test.c new file mode 100644 index 0000000..f737ede --- /dev/null +++ b/tests/disclaim_test.c @@ -0,0 +1,244 @@ +/* + * Copyright (c) 2011 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +/* Test that objects reachable from an object allocated with */ +/* GC_malloc_with_finalizer is not reclaimable before the finalizer */ +/* is called. */ + +#include +#include +#include + +#ifdef HAVE_CONFIG_H + /* For GC_[P]THREADS */ +# include "config.h" +#endif + +#undef GC_NO_THREAD_REDIRECTS +#include "gc_disclaim.h" + +#ifdef LINT2 + /* Avoid include gc_priv.h. */ +# ifndef GC_API_PRIV +# define GC_API_PRIV GC_API +# endif + GC_API_PRIV long GC_random(void); +# undef rand +# define rand() (int)GC_random() +#endif /* LINT2 */ + +#define my_assert(e) \ + if (!(e)) { \ + fflush(stdout); \ + fprintf(stderr, "Assertion failure, line %d: " #e "\n", __LINE__); \ + exit(-1); \ + } + +int memeq(void *s, int c, size_t len) +{ + while (len--) { + if (*(char *)s != c) + return 0; + s = (char *)s + 1; + } + return 1; +} + +void GC_CALLBACK misc_sizes_dct(void *obj, void *cd) +{ + unsigned log_size = *(unsigned char *)obj; + size_t size; + + my_assert(log_size < sizeof(size_t) * 8); + my_assert(cd == NULL); + size = (size_t)1 << log_size; + my_assert(memeq((char *)obj + 1, 0x56, size - 1)); +} + +void test_misc_sizes(void) +{ + static const struct GC_finalizer_closure fc = { misc_sizes_dct, NULL }; + int i; + for (i = 1; i <= 20; ++i) { /* Up to 1 MiB. */ + void *p = GC_finalized_malloc((size_t)1 << i, &fc); + if (p == NULL) { + fprintf(stderr, "Out of memory!\n"); + exit(3); + } + my_assert(memeq(p, 0, (size_t)1 << i)); + memset(p, 0x56, (size_t)1 << i); + *(unsigned char *)p = i; + } +} + +typedef struct pair_s *pair_t; + +struct pair_s { + char magic[16]; + int checksum; + pair_t car; + pair_t cdr; +}; + +static const char * const pair_magic = "PAIR_MAGIC_BYTES"; + +int is_pair(pair_t p) +{ + return memcmp(p->magic, pair_magic, sizeof(p->magic)) == 0; +} + +void GC_CALLBACK pair_dct(void *obj, void *cd) +{ + pair_t p = obj; + int checksum; + + /* Check that obj and its car and cdr are not trashed. */ +# ifdef DEBUG_DISCLAIM_DESTRUCT + printf("Destruct %p = (%p, %p)\n", + (void *)p, (void *)p->car, (void *)p->cdr); +# endif + my_assert(GC_base(obj)); + my_assert(is_pair(p)); + my_assert(!p->car || is_pair(p->car)); + my_assert(!p->cdr || is_pair(p->cdr)); + checksum = 782; + if (p->car) checksum += p->car->checksum; + if (p->cdr) checksum += p->cdr->checksum; + my_assert(p->checksum == checksum); + + /* Invalidate it. */ + memset(p->magic, '*', sizeof(p->magic)); + p->checksum = 0; + p->car = cd; + p->cdr = NULL; +} + +pair_t +pair_new(pair_t car, pair_t cdr) +{ + pair_t p; + static const struct GC_finalizer_closure fc = { pair_dct, NULL }; + + p = GC_finalized_malloc(sizeof(struct pair_s), &fc); + if (p == NULL) { + fprintf(stderr, "Out of memory!\n"); + exit(3); + } + my_assert(!is_pair(p)); + my_assert(memeq(p, 0, sizeof(struct pair_s))); + memcpy(p->magic, pair_magic, sizeof(p->magic)); + p->checksum = 782 + (car? car->checksum : 0) + (cdr? cdr->checksum : 0); + p->car = car; + p->cdr = cdr; +# ifdef DEBUG_DISCLAIM_DESTRUCT + printf("Construct %p = (%p, %p)\n", + (void *)p, (void *)p->car, (void *)p->cdr); +# endif + return p; +} + +void +pair_check_rec(pair_t p) +{ + while (p) { + int checksum = 782; + if (p->car) checksum += p->car->checksum; + if (p->cdr) checksum += p->cdr->checksum; + my_assert(p->checksum == checksum); + if (rand() % 2) + p = p->car; + else + p = p->cdr; + } +} + +#ifdef GC_PTHREADS +# define THREAD_CNT 6 +# include +#else +# define THREAD_CNT 1 +#endif + +#define POP_SIZE 1000 +#if THREAD_CNT > 1 +# define MUTATE_CNT 2000000/THREAD_CNT +#else +# define MUTATE_CNT 10000000 +#endif +#define GROW_LIMIT (MUTATE_CNT/10) + +void *test(void *data) +{ + int i; + pair_t pop[POP_SIZE]; + memset(pop, 0, sizeof(pop)); + for (i = 0; i < MUTATE_CNT; ++i) { + int t = rand() % POP_SIZE; + switch (rand() % (i > GROW_LIMIT? 5 : 3)) { + case 0: case 3: + if (pop[t]) + pop[t] = pop[t]->car; + break; + case 1: case 4: + if (pop[t]) + pop[t] = pop[t]->cdr; + break; + case 2: + pop[t] = pair_new(pop[rand() % POP_SIZE], + pop[rand() % POP_SIZE]); + break; + } + if (rand() % 8 == 1) + pair_check_rec(pop[rand() % POP_SIZE]); + } + return data; +} + +int main(void) +{ +#if THREAD_CNT > 1 + pthread_t th[THREAD_CNT]; + int i; +#endif + + GC_set_all_interior_pointers(0); /* for a stricter test */ + GC_INIT(); + GC_init_finalized_malloc(); + + test_misc_sizes(); + +#if THREAD_CNT > 1 + printf("Threaded disclaim test.\n"); + for (i = 0; i < THREAD_CNT; ++i) { + int err = pthread_create(&th[i], NULL, test, NULL); + if (err) { + fprintf(stderr, "Failed to create thread # %d: %s\n", i, + strerror(err)); + exit(1); + } + } + for (i = 0; i < THREAD_CNT; ++i) { + int err = pthread_join(th[i], NULL); + if (err) { + fprintf(stderr, "Failed to join thread # %d: %s\n", i, + strerror(err)); + exit(69); + } + } +#else + printf("Unthreaded disclaim test.\n"); + test(NULL); +#endif + return 0; +} diff --git a/tests/huge_test.c b/tests/huge_test.c new file mode 100644 index 0000000..bd3ad6c --- /dev/null +++ b/tests/huge_test.c @@ -0,0 +1,64 @@ + +#include +#include +#include + +#ifndef GC_IGNORE_WARN + /* Ignore misleading "Out of Memory!" warning (which is printed on */ + /* every GC_MALLOC call below) by defining this macro before "gc.h" */ + /* inclusion. */ +# define GC_IGNORE_WARN +#endif + +#ifndef GC_MAXIMUM_HEAP_SIZE +# define GC_MAXIMUM_HEAP_SIZE 100 * 1024 * 1024 +# define GC_INITIAL_HEAP_SIZE GC_MAXIMUM_HEAP_SIZE / 20 + /* Otherwise heap expansion aborts when deallocating large block. */ + /* That's OK. We test this corner case mostly to make sure that */ + /* it fails predictably. */ +#endif + +#ifndef GC_ATTR_ALLOC_SIZE + /* Omit alloc_size attribute to avoid compiler warnings about */ + /* exceeding maximum object size when values close to GC_SWORD_MAX */ + /* are passed to GC_MALLOC. */ +# define GC_ATTR_ALLOC_SIZE(argnum) /* empty */ +#endif + +#include "gc.h" + +/* + * Check that very large allocation requests fail. "Success" would usually + * indicate that the size was somehow converted to a negative + * number. Clients shouldn't do this, but we should fail in the + * expected manner. + */ + +#define CHECK_ALLOC_FAILED(r, sz_str) \ + do { \ + if (NULL != (r)) { \ + fprintf(stderr, \ + "Size " sz_str " allocation unexpectedly succeeded\n"); \ + exit(1); \ + } \ + } while (0) + +#define GC_WORD_MAX ((GC_word)-1) +#define GC_SWORD_MAX ((GC_signed_word)(GC_WORD_MAX >> 1)) + +int main(void) +{ + GC_INIT(); + + CHECK_ALLOC_FAILED(GC_MALLOC(GC_SWORD_MAX - 1024), "SWORD_MAX-1024"); + CHECK_ALLOC_FAILED(GC_MALLOC(GC_SWORD_MAX), "SWORD_MAX"); + CHECK_ALLOC_FAILED(GC_MALLOC((GC_word)GC_SWORD_MAX + 1), "SWORD_MAX+1"); + CHECK_ALLOC_FAILED(GC_MALLOC((GC_word)GC_SWORD_MAX + 1024), + "SWORD_MAX+1024"); + CHECK_ALLOC_FAILED(GC_MALLOC(GC_WORD_MAX - 1024), "WORD_MAX-1024"); + CHECK_ALLOC_FAILED(GC_MALLOC(GC_WORD_MAX - 16), "WORD_MAX-16"); + CHECK_ALLOC_FAILED(GC_MALLOC(GC_WORD_MAX - 8), "WORD_MAX-8"); + CHECK_ALLOC_FAILED(GC_MALLOC(GC_WORD_MAX - 4), "WORD_MAX-4"); + CHECK_ALLOC_FAILED(GC_MALLOC(GC_WORD_MAX), "WORD_MAX"); + return 0; +} diff --git a/tests/initsecondarythread.c b/tests/initsecondarythread.c new file mode 100644 index 0000000..9893fb5 --- /dev/null +++ b/tests/initsecondarythread.c @@ -0,0 +1,107 @@ +/* + * Copyright (C) 2011 Ludovic Courtes + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* Make sure 'GC_INIT' can be called from threads other than the initial + * thread. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#ifndef GC_THREADS +# define GC_THREADS +#endif + +#define GC_NO_THREAD_REDIRECTS 1 + /* Do not redirect thread creation and join calls. */ + +#include "gc.h" + +#ifdef GC_PTHREADS +# include +#else +# include +#endif + +#include +#include + +#ifdef GC_PTHREADS + static void *thread(void *arg) +#else + static DWORD WINAPI thread(LPVOID arg) +#endif +{ + GC_INIT(); + (void)GC_MALLOC(123); + (void)GC_MALLOC(12345); +# ifdef GC_PTHREADS + return arg; +# else + return (DWORD)(GC_word)arg; +# endif +} + +#include "private/gcconfig.h" + +int main(void) +{ +# ifdef GC_PTHREADS + int code; + pthread_t t; + +# ifdef LINT2 + t = pthread_self(); /* explicitly initialize to some value */ +# endif +# else + HANDLE t; + DWORD thread_id; +# endif +# if !(defined(BEOS) || defined(MSWIN32) || defined(MSWINCE) \ + || defined(CYGWIN32) || defined(GC_OPENBSD_UTHREADS) \ + || (defined(DARWIN) && !defined(NO_PTHREAD_GET_STACKADDR_NP)) \ + || ((defined(FREEBSD) || defined(LINUX) || defined(NETBSD) \ + || defined(PLATFORM_ANDROID)) && !defined(NO_PTHREAD_GETATTR_NP) \ + && !defined(NO_PTHREAD_ATTR_GET_NP)) \ + || (defined(GC_SOLARIS_THREADS) && !defined(_STRICT_STDC)) \ + || (!defined(STACKBOTTOM) && (defined(HEURISTIC1) \ + || (!defined(LINUX_STACKBOTTOM) && !defined(FREEBSD_STACKBOTTOM))))) + /* GC_INIT() must be called from main thread only. */ + GC_INIT(); +# endif + (void)GC_get_parallel(); /* linking fails if no threads support */ +# ifdef GC_PTHREADS + if ((code = pthread_create (&t, NULL, thread, NULL)) != 0) { + fprintf(stderr, "Thread creation failed %d\n", code); + return 1; + } + if ((code = pthread_join (t, NULL)) != 0) { + fprintf(stderr, "Thread join failed %d\n", code); + return 1; + } +# else + t = CreateThread(NULL, 0, thread, 0, 0, &thread_id); + if (t == NULL) { + fprintf(stderr, "Thread creation failed %d\n", (int)GetLastError()); + return 1; + } + if (WaitForSingleObject(t, INFINITE) != WAIT_OBJECT_0) { + fprintf(stderr, "Thread join failed %d\n", (int)GetLastError()); + CloseHandle(t); + return 1; + } + CloseHandle(t); +# endif + return 0; +} diff --git a/tests/leak_test.c b/tests/leak_test.c new file mode 100644 index 0000000..ae0a9af --- /dev/null +++ b/tests/leak_test.c @@ -0,0 +1,25 @@ +#include "leak_detector.h" + +int main(void) { + int *p[10]; + int i; + GC_set_find_leak(1); /* for new collect versions not compiled */ + /* with -DFIND_LEAK. */ + + GC_INIT(); /* Needed if thread-local allocation is enabled. */ + /* FIXME: This is not ideal. */ + for (i = 0; i < 10; ++i) { + p[i] = malloc(sizeof(int)+i); + } + CHECK_LEAKS(); + for (i = 1; i < 10; ++i) { + free(p[i]); + } + for (i = 0; i < 9; ++i) { + p[i] = malloc(sizeof(int)+i); + } + CHECK_LEAKS(); + CHECK_LEAKS(); + CHECK_LEAKS(); + return 0; +} diff --git a/tests/middle.c b/tests/middle.c new file mode 100644 index 0000000..55686f7 --- /dev/null +++ b/tests/middle.c @@ -0,0 +1,25 @@ +/* + * Test at the boundary between small and large objects. + * Inspired by a test case from Zoltan Varga. + */ +#include "gc.h" +#include + +int main (void) +{ + int i; + + GC_set_all_interior_pointers(0); + GC_INIT(); + + for (i = 0; i < 20000; ++i) { + (void)GC_malloc_atomic(4096); + (void)GC_malloc(4096); + } + for (i = 0; i < 20000; ++i) { + (void)GC_malloc_atomic(2048); + (void)GC_malloc(2048); + } + printf("Final heap size is %lu\n", (unsigned long)GC_get_heap_size()); + return 0; +} diff --git a/tests/realloc_test.c b/tests/realloc_test.c new file mode 100644 index 0000000..1c1668f --- /dev/null +++ b/tests/realloc_test.c @@ -0,0 +1,34 @@ + +#include +#include +#include "gc.h" + +#define COUNT 10000000 + +int main(void) { + int i; + unsigned long last_heap_size = 0; + + GC_INIT(); + + for (i = 0; i < COUNT; i++) { + int **p = GC_MALLOC(sizeof(int *)); + int *q = GC_MALLOC_ATOMIC(sizeof(int)); + + if (p == 0 || *p != 0) { + fprintf(stderr, "GC_malloc returned garbage (or NULL)\n"); + exit(1); + } + + *p = GC_REALLOC(q, 2 * sizeof(int)); + + if (i % 10 == 0) { + unsigned long heap_size = (unsigned long)GC_get_heap_size(); + if (heap_size != last_heap_size) { + printf("Heap size: %lu\n", heap_size); + last_heap_size = heap_size; + } + } + } + return 0; +} diff --git a/tests/smash_test.c b/tests/smash_test.c new file mode 100644 index 0000000..0e8b1f0 --- /dev/null +++ b/tests/smash_test.c @@ -0,0 +1,28 @@ +/* + * Test that overwrite error detection works reasonably. + */ +#define GC_DEBUG +#include "gc.h" + +#include + +#define COUNT 7000 +#define SIZE 40 + +char * A[COUNT]; + +int main(void) +{ + int i; + char *p; + + GC_INIT(); + + for (i = 0; i < COUNT; ++i) { + A[i] = p = GC_MALLOC(SIZE); + + if (i%3000 == 0) GC_gcollect(); + if (i%5678 == 0 && p != 0) p[SIZE + i/2000] = 42; + } + return 0; +} diff --git a/tests/staticrootslib.c b/tests/staticrootslib.c new file mode 100644 index 0000000..ef828c7 --- /dev/null +++ b/tests/staticrootslib.c @@ -0,0 +1,57 @@ + +/* This test file is intended to be compiled into a DLL. */ + +#ifndef GC_DEBUG +# define GC_DEBUG +#endif + +#include "gc.h" + +#ifndef GC_TEST_EXPORT_API +# if defined(GC_VISIBILITY_HIDDEN_SET) \ + && !defined(__CEGCC__) && !defined(__CYGWIN__) && !defined(__MINGW32__) +# define GC_TEST_EXPORT_API \ + extern __attribute__((__visibility__("default"))) +# else +# define GC_TEST_EXPORT_API extern +# endif +#endif + +struct treenode { + struct treenode *x; + struct treenode *y; +}; + +static struct treenode *root[10] = { 0 }; +static struct treenode *root_nz[10] = { (void *)(GC_word)2 }; + +#ifdef STATICROOTSLIB2 +# define libsrl_getpelem libsrl_getpelem2 +#else + + GC_TEST_EXPORT_API struct treenode * libsrl_mktree(int i) + { + struct treenode * r = GC_MALLOC(sizeof(struct treenode)); + if (0 == i) return 0; + if (1 == i) r = GC_MALLOC_ATOMIC(sizeof(struct treenode)); + if (r) { + r -> x = libsrl_mktree(i-1); + r -> y = libsrl_mktree(i-1); + } + return r; + } + + GC_TEST_EXPORT_API void * libsrl_init(void) + { +# ifndef STATICROOTSLIB_INIT_IN_MAIN + GC_INIT(); +# endif + return GC_MALLOC(sizeof(struct treenode)); + } + +#endif /* !STATICROOTSLIB2 */ + +GC_TEST_EXPORT_API struct treenode ** libsrl_getpelem(int i, int j) +{ + return &((j & 1) != 0 ? root_nz : root)[i]; +} diff --git a/tests/staticrootstest.c b/tests/staticrootstest.c new file mode 100644 index 0000000..fc2b9b3 --- /dev/null +++ b/tests/staticrootstest.c @@ -0,0 +1,75 @@ + +#include +#include + +#ifndef GC_DEBUG +# define GC_DEBUG +#endif + +#include "gc.h" +#include "gc_backptr.h" + +#ifndef GC_TEST_IMPORT_API +# define GC_TEST_IMPORT_API extern +#endif + +/* Should match that in staticrootslib.c. */ +struct treenode { + struct treenode *x; + struct treenode *y; +}; + +struct treenode *root[10] = { NULL }; + +/* Same as "root" variable but initialized to some non-zero value (to */ +/* be placed to .data section instead of .bss). */ +struct treenode *root_nz[10] = { (void *)(GC_word)1 }; + +static char *staticroot; /* intentionally static */ + +GC_TEST_IMPORT_API struct treenode * libsrl_mktree(int i); +GC_TEST_IMPORT_API void * libsrl_init(void); +GC_TEST_IMPORT_API struct treenode ** libsrl_getpelem(int i, int j); + +GC_TEST_IMPORT_API struct treenode ** libsrl_getpelem2(int i, int j); + +void init_staticroot(void) +{ + /* Intentionally put staticroot initialization in a function other */ + /* than main to prevent CSA warning that staticroot variable can be */ + /* changed to be a local one). */ + staticroot = libsrl_init(); +} + +int main(void) +{ + int i, j; + +# ifdef STATICROOTSLIB_INIT_IN_MAIN + GC_INIT(); +# endif + init_staticroot(); + if (NULL == staticroot) { + fprintf(stderr, "GC_malloc returned NULL\n"); + return 2; + } + memset(staticroot, 0x42, sizeof(struct treenode)); + GC_gcollect(); + for (j = 0; j < 4; j++) { + for (i = 0; i < (int)(sizeof(root) / sizeof(root[0])); ++i) { +# ifdef STATICROOTSLIB2 + *libsrl_getpelem2(i, j) = libsrl_mktree(12); +# endif + *libsrl_getpelem(i, j) = libsrl_mktree(12); + ((j & 1) != 0 ? root_nz : root)[i] = libsrl_mktree(12); + GC_gcollect(); + } + for (i = 0; i < (int)sizeof(struct treenode); ++i) { + if (staticroot[i] != 0x42) { + fprintf(stderr, "Memory check failed\n"); + return -1; + } + } + } + return 0; +} diff --git a/tests/subthread_create.c b/tests/subthread_create.c new file mode 100644 index 0000000..e30eae5 --- /dev/null +++ b/tests/subthread_create.c @@ -0,0 +1,153 @@ + +#ifdef HAVE_CONFIG_H + /* For PARALLEL_MARK */ +# include "config.h" +#endif + +#ifndef GC_THREADS +# define GC_THREADS +#endif +#include "gc.h" + +#ifdef PARALLEL_MARK +# define AO_REQUIRE_CAS +#endif +#include "atomic_ops.h" + +#include + +#ifdef AO_HAVE_fetch_and_add1 + +#ifdef GC_PTHREADS +# include +#else +# include +#endif + +#include +#include + +#ifndef MAX_SUBTHREAD_DEPTH +# define INITIAL_THREAD_COUNT 31 +# define MAX_ALIVE_THREAD_COUNT 55 +# define MAX_SUBTHREAD_DEPTH 7 +# define MAX_SUBTHREAD_COUNT 200 +#endif + +#ifndef DECAY_NUMER +# define DECAY_NUMER 15 +# define DECAY_DENOM 16 +#endif + +volatile AO_t thread_created_cnt = 0; +volatile AO_t thread_ended_cnt = 0; + +#ifdef GC_PTHREADS + void *entry(void *arg) +#else + DWORD WINAPI entry(LPVOID arg) +#endif +{ + int thread_num = AO_fetch_and_add1(&thread_created_cnt); + GC_word my_depth = (GC_word)arg + 1; + + if (my_depth <= MAX_SUBTHREAD_DEPTH + && thread_num < MAX_SUBTHREAD_COUNT + && (thread_num % DECAY_DENOM) < DECAY_NUMER + && thread_num - (int)AO_load(&thread_ended_cnt) + <= MAX_ALIVE_THREAD_COUNT) { +# ifdef GC_PTHREADS + int err; + pthread_t th; + + err = pthread_create(&th, NULL, entry, (void *)my_depth); + if (err != 0) { + fprintf(stderr, "Thread #%d creation failed: %s\n", thread_num, + strerror(err)); + exit(2); + } + err = pthread_detach(th); + if (err != 0) { + fprintf(stderr, "Thread #%d detach failed: %s\n", thread_num, + strerror(err)); + exit(2); + } +# else + HANDLE th; + DWORD thread_id; + + th = CreateThread(NULL, 0, entry, (LPVOID)my_depth, 0, &thread_id); + if (th == NULL) { + fprintf(stderr, "Thread #%d creation failed: %d\n", thread_num, + (int)GetLastError()); + exit(2); + } + CloseHandle(th); +# endif + } + + (void)AO_fetch_and_add1(&thread_ended_cnt); + return 0; +} + +int main(void) +{ + int i; +# ifdef GC_PTHREADS + int err; + pthread_t th[INITIAL_THREAD_COUNT]; +# else + HANDLE th[INITIAL_THREAD_COUNT]; +# endif + + GC_INIT(); + for (i = 0; i < INITIAL_THREAD_COUNT; ++i) { +# ifdef GC_PTHREADS + err = pthread_create(&th[i], NULL, entry, 0); + if (err) { + fprintf(stderr, "Thread creation failed: %s\n", strerror(err)); + exit(1); + } +# else + DWORD thread_id; + th[i] = CreateThread(NULL, 0, entry, 0, 0, &thread_id); + if (th[i] == NULL) { + fprintf(stderr, "Thread creation failed: %d\n", + (int)GetLastError()); + exit(1); + } +# endif + } + + for (i = 0; i < INITIAL_THREAD_COUNT; ++i) { +# ifdef GC_PTHREADS + void *res; + err = pthread_join(th[i], &res); + if (err) { + fprintf(stderr, "Failed to join thread: %s\n", strerror(err)); + exit(1); + } +# else + if (WaitForSingleObject(th[i], INFINITE) != WAIT_OBJECT_0) { + fprintf(stderr, "Failed to join thread: %d\n", + (int)GetLastError()); + CloseHandle(th[i]); + exit(1); + } + CloseHandle(th[i]); +# endif + } + printf("subthread_create: created %d threads (%d ended)\n", + (int)AO_load(&thread_created_cnt), (int)AO_load(&thread_ended_cnt)); + return 0; +} + +#else + +int main(void) +{ + printf("subthread_create test skipped\n"); + return 0; +} + +#endif /* !AO_HAVE_fetch_and_add1 */ diff --git a/tests/test.c b/tests/test.c new file mode 100644 index 0000000..7a45884 --- /dev/null +++ b/tests/test.c @@ -0,0 +1,2311 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ +/* An incomplete test for the garbage collector. */ +/* Some more obscure entry points are not tested at all. */ +/* This must be compiled with the same flags used to build the */ +/* GC. It uses GC internals to allow more precise results */ +/* checking for some of the tests. */ + +# ifdef HAVE_CONFIG_H +# include "config.h" +# endif + +# undef GC_BUILD + +#if (defined(DBG_HDRS_ALL) || defined(MAKE_BACK_GRAPH)) \ + && !defined(GC_DEBUG) && !defined(CPPCHECK) +# define GC_DEBUG +#endif + +#if defined(CPPCHECK) && defined(GC_PTHREADS) && !defined(_GNU_SOURCE) +# define _GNU_SOURCE 1 +#endif +#undef GC_NO_THREAD_REDIRECTS +#include "gc.h" + +#ifndef NTHREADS /* Number of additional threads to fork. */ +# define NTHREADS 5 /* excludes main thread, which also runs a test. */ + /* Not respected by PCR test. */ +#endif + +# if defined(mips) && defined(SYSTYPE_BSD43) + /* MIPS RISCOS 4 */ +# else +# include +# endif +# include +# if defined(_WIN32_WCE) && !defined(__GNUC__) +# include +/* # define assert ASSERT */ +# else +# include /* Not normally used, but handy for debugging. */ +# endif + +# include "gc_typed.h" +# include "private/gc_priv.h" /* For output, locking, MIN_WORDS, */ + /* some statistics and gcconfig.h. */ + +# if defined(MSWIN32) || defined(MSWINCE) +# include +# endif + +#ifdef GC_PRINT_VERBOSE_STATS +# define print_stats VERBOSE +# define INIT_PRINT_STATS /* empty */ +#else + /* Use own variable as GC_print_stats might not be exported. */ + static int print_stats = 0; +# ifdef GC_READ_ENV_FILE + /* GETENV uses GC internal function in this case. */ +# define INIT_PRINT_STATS /* empty */ +# else +# define INIT_PRINT_STATS \ + { \ + if (0 != GETENV("GC_PRINT_VERBOSE_STATS")) \ + print_stats = VERBOSE; \ + else if (0 != GETENV("GC_PRINT_STATS")) \ + print_stats = 1; \ + } +# endif +#endif /* !GC_PRINT_VERBOSE_STATS */ + +# ifdef PCR +# include "th/PCR_ThCrSec.h" +# include "th/PCR_Th.h" +# define GC_printf printf +# endif + +# if defined(GC_PTHREADS) && !defined(GC_WIN32_PTHREADS) +# include +# else +# define NO_TEST_HANDLE_FORK +# endif + +# if (!defined(THREADS) || !defined(HANDLE_FORK) \ + || (defined(DARWIN) && defined(MPROTECT_VDB) \ + && !defined(NO_INCREMENTAL) && !defined(MAKE_BACK_GRAPH))) \ + && !defined(NO_TEST_HANDLE_FORK) && !defined(TEST_HANDLE_FORK) \ + && !defined(TEST_FORK_WITHOUT_ATFORK) +# define NO_TEST_HANDLE_FORK +# endif + +# ifndef NO_TEST_HANDLE_FORK +# include +# include +# include +# ifdef HANDLE_FORK +# define INIT_FORK_SUPPORT GC_set_handle_fork(1) + /* Causes abort in GC_init on pthread_atfork failure. */ +# elif !defined(TEST_FORK_WITHOUT_ATFORK) +# define INIT_FORK_SUPPORT GC_set_handle_fork(-1) + /* Passing -1 implies fork() should be as well manually */ + /* surrounded with GC_atfork_prepare/parent/child. */ +# endif +# endif + +# ifndef INIT_FORK_SUPPORT +# define INIT_FORK_SUPPORT /* empty */ +# endif + +#ifdef PCR +# define FINALIZER_LOCK() PCR_ThCrSec_EnterSys() +# define FINALIZER_UNLOCK() PCR_ThCrSec_ExitSys() +#elif defined(GC_PTHREADS) + static pthread_mutex_t incr_lock = PTHREAD_MUTEX_INITIALIZER; +# define FINALIZER_LOCK() pthread_mutex_lock(&incr_lock) +# define FINALIZER_UNLOCK() pthread_mutex_unlock(&incr_lock) +#elif defined(GC_WIN32_THREADS) + static CRITICAL_SECTION incr_cs; +# define FINALIZER_LOCK() EnterCriticalSection(&incr_cs) +# define FINALIZER_UNLOCK() LeaveCriticalSection(&incr_cs) +#else +# define FINALIZER_LOCK() (void)0 +# define FINALIZER_UNLOCK() (void)0 +#endif /* !THREADS */ + +#include + +#define CHECK_GCLIB_VERSION \ + if (GC_get_version() != ((GC_VERSION_MAJOR<<16) \ + | (GC_VERSION_MINOR<<8) \ + | GC_VERSION_MICRO)) { \ + GC_printf("libgc version mismatch\n"); \ + exit(1); \ + } + +/* Call GC_INIT only on platforms on which we think we really need it, */ +/* so that we can test automatic initialization on the rest. */ +#if defined(TEST_EXPLICIT_GC_INIT) || defined(AIX) || defined(CYGWIN32) \ + || defined(DARWIN) || defined(PLATFORM_ANDROID) \ + || (defined(MSWINCE) && !defined(GC_WINMAIN_REDIRECT)) +# define GC_OPT_INIT GC_INIT() +#else +# define GC_OPT_INIT /* empty */ +#endif + +#define GC_COND_INIT() \ + INIT_FORK_SUPPORT; GC_OPT_INIT; CHECK_GCLIB_VERSION; INIT_PRINT_STATS + +#define CHECK_OUT_OF_MEMORY(p) \ + if ((p) == NULL) { \ + GC_printf("Out of memory\n"); \ + exit(1); \ + } + +#if defined(THREADS) && (defined(PARALLEL_MARK) \ + || !defined(GC_WIN32_THREADS)) +# include "atomic_ops.h" /* for counters */ +#endif + +/* Define AO primitives for a single-threaded mode. */ +#ifndef AO_CLEAR + /* AO_t not defined. */ +# define AO_t GC_word +#endif +#ifndef AO_HAVE_load_acquire + static AO_t AO_load_acquire(const volatile AO_t *addr) + { + AO_t result; + + FINALIZER_LOCK(); + result = *addr; + FINALIZER_UNLOCK(); + return result; + } +#endif +#ifndef AO_HAVE_store_release + /* Not a macro as new_val argument should be evaluated before the lock. */ + static void AO_store_release(volatile AO_t *addr, AO_t new_val) + { + FINALIZER_LOCK(); + *addr = new_val; + FINALIZER_UNLOCK(); + } +#endif +#ifndef AO_HAVE_fetch_and_add1 +# define AO_fetch_and_add1(p) ((*(p))++) + /* This is used only to update counters. */ +#endif + +/* Allocation Statistics. Synchronization is not strictly necessary. */ +volatile AO_t stubborn_count = 0; +volatile AO_t uncollectable_count = 0; +volatile AO_t collectable_count = 0; +volatile AO_t atomic_count = 0; +volatile AO_t realloc_count = 0; + +volatile AO_t extra_count = 0; /* Amount of space wasted in cons node; */ + /* also used in gcj_cons, mktree and */ + /* chktree (for other purposes). */ + +#if defined(GC_AMIGA_FASTALLOC) && defined(AMIGA) + + void GC_amiga_free_all_mem(void); + void Amiga_Fail(void){GC_amiga_free_all_mem();abort();} +# define FAIL Amiga_Fail() + void *GC_amiga_gctest_malloc_explicitly_typed(size_t lb, GC_descr d){ + void *ret=GC_malloc_explicitly_typed(lb,d); + if(ret==NULL){ + GC_gcollect(); + ret=GC_malloc_explicitly_typed(lb,d); + if(ret==NULL){ + GC_printf("Out of memory, (typed allocations are not directly " + "supported with the GC_AMIGA_FASTALLOC option.)\n"); + FAIL; + } + } + return ret; + } + void *GC_amiga_gctest_calloc_explicitly_typed(size_t a,size_t lb, GC_descr d){ + void *ret=GC_calloc_explicitly_typed(a,lb,d); + if(ret==NULL){ + GC_gcollect(); + ret=GC_calloc_explicitly_typed(a,lb,d); + if(ret==NULL){ + GC_printf("Out of memory, (typed allocations are not directly " + "supported with the GC_AMIGA_FASTALLOC option.)\n"); + FAIL; + } + } + return ret; + } +# define GC_malloc_explicitly_typed(a,b) GC_amiga_gctest_malloc_explicitly_typed(a,b) +# define GC_calloc_explicitly_typed(a,b,c) GC_amiga_gctest_calloc_explicitly_typed(a,b,c) + +#else /* !AMIGA_FASTALLOC */ + +# if defined(PCR) || defined(LINT2) +# define FAIL abort() +# else +# define FAIL ABORT("Test failed") +# endif + +#endif /* !AMIGA_FASTALLOC */ + +/* AT_END may be defined to exercise the interior pointer test */ +/* if the collector is configured with ALL_INTERIOR_POINTERS. */ +/* As it stands, this test should succeed with either */ +/* configuration. In the FIND_LEAK configuration, it should */ +/* find lots of leaks, since we free almost nothing. */ + +struct SEXPR { + struct SEXPR * sexpr_car; + struct SEXPR * sexpr_cdr; +}; + + +typedef struct SEXPR * sexpr; + +# define INT_TO_SEXPR(x) ((sexpr)(GC_word)(x)) +# define SEXPR_TO_INT(x) ((int)(GC_word)(x)) + +# undef nil +# define nil (INT_TO_SEXPR(0)) +# define car(x) ((x) -> sexpr_car) +# define cdr(x) ((x) -> sexpr_cdr) +# define is_nil(x) ((x) == nil) + +/* Silly implementation of Lisp cons. Intentionally wastes lots of space */ +/* to test collector. */ +# ifdef VERY_SMALL_CONFIG +# define cons small_cons +# else +sexpr cons (sexpr x, sexpr y) +{ + sexpr r; + int *p; + unsigned my_extra = (unsigned)AO_fetch_and_add1(&extra_count) % 5000; + + r = (sexpr) GC_MALLOC_STUBBORN(sizeof(struct SEXPR) + my_extra); + CHECK_OUT_OF_MEMORY(r); + AO_fetch_and_add1(&stubborn_count); + for (p = (int *)r; + (word)p < (word)r + my_extra + sizeof(struct SEXPR); p++) { + if (*p) { + GC_printf("Found nonzero at %p - allocator is broken\n", + (void *)p); + FAIL; + } + *p = (int)((13 << 12) + ((p - (int *)r) & 0xfff)); + } +# ifdef AT_END + r = (sexpr)((char *)r + (my_extra & ~7)); +# endif + r -> sexpr_car = x; + r -> sexpr_cdr = y; + GC_END_STUBBORN_CHANGE(r); + return(r); +} +# endif + +#include "gc_mark.h" + +#ifdef GC_GCJ_SUPPORT + +#include "gc_gcj.h" + +/* The following struct emulates the vtable in gcj. */ +/* This assumes the default value of MARK_DESCR_OFFSET. */ +struct fake_vtable { + void * dummy; /* class pointer in real gcj. */ + GC_word descr; +}; + +struct fake_vtable gcj_class_struct1 = { 0, sizeof(struct SEXPR) + + sizeof(struct fake_vtable *) }; + /* length based descriptor. */ +struct fake_vtable gcj_class_struct2 = + { 0, ((GC_word)3 << (CPP_WORDSZ - 3)) | GC_DS_BITMAP}; + /* Bitmap based descriptor. */ + +struct GC_ms_entry * fake_gcj_mark_proc(word * addr, + struct GC_ms_entry *mark_stack_ptr, + struct GC_ms_entry *mark_stack_limit, + word env ) +{ + sexpr x; + if (1 == env) { + /* Object allocated with debug allocator. */ + addr = (word *)GC_USR_PTR_FROM_BASE(addr); + } + x = (sexpr)(addr + 1); /* Skip the vtable pointer. */ + mark_stack_ptr = GC_MARK_AND_PUSH( + (void *)(x -> sexpr_cdr), mark_stack_ptr, + mark_stack_limit, (void * *)&(x -> sexpr_cdr)); + mark_stack_ptr = GC_MARK_AND_PUSH( + (void *)(x -> sexpr_car), mark_stack_ptr, + mark_stack_limit, (void * *)&(x -> sexpr_car)); + return(mark_stack_ptr); +} + +#endif /* GC_GCJ_SUPPORT */ + + +sexpr small_cons (sexpr x, sexpr y) +{ + sexpr r = (sexpr)GC_MALLOC(sizeof(struct SEXPR)); + + CHECK_OUT_OF_MEMORY(r); + AO_fetch_and_add1(&collectable_count); + r -> sexpr_car = x; + r -> sexpr_cdr = y; + return(r); +} + +sexpr small_cons_uncollectable (sexpr x, sexpr y) +{ + sexpr r = (sexpr)GC_MALLOC_UNCOLLECTABLE(sizeof(struct SEXPR)); + + CHECK_OUT_OF_MEMORY(r); + AO_fetch_and_add1(&uncollectable_count); + r -> sexpr_car = x; + r -> sexpr_cdr = (sexpr)(~(GC_word)y); + return(r); +} + +#ifdef GC_GCJ_SUPPORT + sexpr gcj_cons(sexpr x, sexpr y) + { + sexpr result; + GC_word * r = (GC_word *)GC_GCJ_MALLOC( + sizeof(struct SEXPR) + sizeof(struct fake_vtable*), + (AO_fetch_and_add1(&extra_count) & 1) != 0 + ? &gcj_class_struct1 + : &gcj_class_struct2); + + CHECK_OUT_OF_MEMORY(r); + result = (sexpr)(r + 1); + result -> sexpr_car = x; + result -> sexpr_cdr = y; + return(result); + } +#endif /* GC_GCJ_SUPPORT */ + +/* Return reverse(x) concatenated with y */ +sexpr reverse1(sexpr x, sexpr y) +{ + if (is_nil(x)) { + return(y); + } else { + return( reverse1(cdr(x), cons(car(x), y)) ); + } +} + +sexpr reverse(sexpr x) +{ +# ifdef TEST_WITH_SYSTEM_MALLOC + GC_noop1(GC_HIDE_POINTER(malloc(100000))); +# endif + return( reverse1(x, nil) ); +} + +sexpr ints(int low, int up) +{ + if (low > up) { + return(nil); + } else { + return(small_cons(small_cons(INT_TO_SEXPR(low), nil), ints(low+1, up))); + } +} + +#ifdef GC_GCJ_SUPPORT +/* Return reverse(x) concatenated with y */ +sexpr gcj_reverse1(sexpr x, sexpr y) +{ + if (is_nil(x)) { + return(y); + } else { + return( gcj_reverse1(cdr(x), gcj_cons(car(x), y)) ); + } +} + +sexpr gcj_reverse(sexpr x) +{ + return( gcj_reverse1(x, nil) ); +} + +sexpr gcj_ints(int low, int up) +{ + if (low > up) { + return(nil); + } else { + return(gcj_cons(gcj_cons(INT_TO_SEXPR(low), nil), gcj_ints(low+1, up))); + } +} +#endif /* GC_GCJ_SUPPORT */ + +/* To check uncollectible allocation we build lists with disguised cdr */ +/* pointers, and make sure they don't go away. */ +sexpr uncollectable_ints(int low, int up) +{ + if (low > up) { + return(nil); + } else { + return(small_cons_uncollectable(small_cons(INT_TO_SEXPR(low), nil), + uncollectable_ints(low+1, up))); + } +} + +void check_ints(sexpr list, int low, int up) +{ + if (is_nil(list)) { + GC_printf("list is nil\n"); + FAIL; + } + if (SEXPR_TO_INT(car(car(list))) != low) { + GC_printf( + "List reversal produced incorrect list - collector is broken\n"); + FAIL; + } + if (low == up) { + if (cdr(list) != nil) { + GC_printf("List too long - collector is broken\n"); + FAIL; + } + } else { + check_ints(cdr(list), low+1, up); + } +} + +# define UNCOLLECTABLE_CDR(x) (sexpr)(~(GC_word)(cdr(x))) + +void check_uncollectable_ints(sexpr list, int low, int up) +{ + if (SEXPR_TO_INT(car(car(list))) != low) { + GC_printf("Uncollectable list corrupted - collector is broken\n"); + FAIL; + } + if (low == up) { + if (UNCOLLECTABLE_CDR(list) != nil) { + GC_printf("Uncollectable list too long - collector is broken\n"); + FAIL; + } + } else { + check_uncollectable_ints(UNCOLLECTABLE_CDR(list), low+1, up); + } +} + +/* Not used, but useful for debugging: */ +void print_int_list(sexpr x) +{ + if (is_nil(x)) { + GC_printf("NIL\n"); + } else { + GC_printf("(%d)", SEXPR_TO_INT(car(car(x)))); + if (!is_nil(cdr(x))) { + GC_printf(", "); + print_int_list(cdr(x)); + } else { + GC_printf("\n"); + } + } +} + +/* ditto: */ +void check_marks_int_list(sexpr x) +{ + if (!GC_is_marked(x)) + GC_printf("[unm:%p]", (void *)x); + else + GC_printf("[mkd:%p]", (void *)x); + if (is_nil(x)) { + GC_printf("NIL\n"); + } else { + if (!GC_is_marked(car(x))) + GC_printf("[unm car:%p]", (void *)car(x)); + GC_printf("(%d)", SEXPR_TO_INT(car(car(x)))); + if (!is_nil(cdr(x))) { + GC_printf(", "); + check_marks_int_list(cdr(x)); + } else { + GC_printf("\n"); + } + } +} + +/* + * A tiny list reversal test to check thread creation. + */ +#ifdef THREADS + +# ifdef VERY_SMALL_CONFIG +# define TINY_REVERSE_UPPER_VALUE 4 +# else +# define TINY_REVERSE_UPPER_VALUE 10 +# endif + +# if defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS) + DWORD __stdcall tiny_reverse_test(void * arg GC_ATTR_UNUSED) +# else + void * tiny_reverse_test(void * arg GC_ATTR_UNUSED) +# endif +{ + int i; + for (i = 0; i < 5; ++i) { + check_ints(reverse(reverse(ints(1, TINY_REVERSE_UPPER_VALUE))), + 1, TINY_REVERSE_UPPER_VALUE); + } +# if defined(GC_ENABLE_SUSPEND_THREAD) + /* Force collection from a thread. */ + GC_gcollect(); +# endif + return 0; +} + +# if defined(GC_PTHREADS) +# if defined(GC_ENABLE_SUSPEND_THREAD) +# include "javaxfc.h" +# endif + + void fork_a_thread(void) + { + pthread_t t; + int code; +# ifdef DEFAULT_STACK_MAYBE_SMALL + pthread_attr_t attr; + + code = pthread_attr_init(&attr); + if (code != 0) { + GC_printf("pthread_attr_init failed, error=%d\n", code); + FAIL; + } + code = pthread_attr_setstacksize(&attr, MIN_STACK_SIZE); + if (code != 0) { + GC_printf("pthread_attr_setstacksize(MIN_STACK_SIZE) failed," + " error=%d\n", code); + FAIL; + } + code = pthread_create(&t, &attr, tiny_reverse_test, 0); + (void)pthread_attr_destroy(&attr); +# else + code = pthread_create(&t, NULL, tiny_reverse_test, 0); +# endif + if (code != 0) { + GC_printf("Small thread creation failed %d\n", code); + FAIL; + } +# if defined(GC_ENABLE_SUSPEND_THREAD) && !defined(GC_DARWIN_THREADS) \ + && !defined(GC_OPENBSD_UTHREADS) && !defined(GC_WIN32_THREADS) \ + && !defined(NACL) && !defined(GC_OSF1_THREADS) + if (GC_is_thread_suspended(t)) { + GC_printf("Running thread should be not suspended\n"); + FAIL; + } + /* Thread could be running or already terminated (but not joined). */ + GC_suspend_thread(t); + if (!GC_is_thread_suspended(t)) { + GC_printf("Thread expected to be suspended\n"); + FAIL; + } + GC_suspend_thread(t); /* should be no-op */ + GC_resume_thread(t); + if (GC_is_thread_suspended(t)) { + GC_printf("Resumed thread should be not suspended\n"); + FAIL; + } + GC_resume_thread(t); /* should be no-op */ +# endif + if ((code = pthread_join(t, 0)) != 0) { + GC_printf("Small thread join failed %d\n", code); + FAIL; + } + } + +# elif defined(GC_WIN32_THREADS) + void fork_a_thread(void) + { + DWORD thread_id; + HANDLE h; + h = GC_CreateThread((SECURITY_ATTRIBUTES *)NULL, (word)0, + tiny_reverse_test, NULL, (DWORD)0, &thread_id); + /* Explicitly specify types of the */ + /* arguments to test the prototype. */ + if (h == (HANDLE)NULL) { + GC_printf("Small thread creation failed %d\n", + (int)GetLastError()); + FAIL; + } + if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) { + GC_printf("Small thread wait failed %d\n", + (int)GetLastError()); + FAIL; + } + } + +# endif + +#endif + +void test_generic_malloc_or_special(void *p) { + size_t size; + int kind = GC_get_kind_and_size(p, &size); + void *p2; + + if (size != GC_size(p)) { + GC_printf("GC_get_kind_and_size returned size not matching GC_size\n"); + FAIL; + } + p2 = GC_GENERIC_OR_SPECIAL_MALLOC(10, kind); + CHECK_OUT_OF_MEMORY(p2); + if (GC_get_kind_and_size(p2, NULL) != kind) { + GC_printf("GC_generic_or_special_malloc:" + " unexpected kind of returned object\n"); + FAIL; + } + GC_FREE(p2); +} + +/* Try to force a to be strangely aligned */ +volatile struct { + char dummy; + AO_t aa; +} A; +#define a_set(p) AO_store_release(&A.aa, (AO_t)(p)) +#define a_get() (sexpr)AO_load_acquire(&A.aa) + +/* + * Repeatedly reverse lists built out of very different sized cons cells. + * Check that we didn't lose anything. + */ +void *GC_CALLBACK reverse_test_inner(void *data) +{ + int i; + sexpr b; + sexpr c; + sexpr d; + sexpr e; + sexpr *f, *g, *h; + + if (data == 0) { + /* This stack frame is not guaranteed to be scanned. */ + return GC_call_with_gc_active(reverse_test_inner, (void*)(word)1); + } + +# if defined(MACOS) \ + || (defined(UNIX_LIKE) && defined(NO_GETCONTEXT)) /* e.g. musl */ + /* Assume 128K stacks at least. */ +# define BIG 1000 +# elif defined(PCR) + /* PCR default stack is 100K. Stack frames are up to 120 bytes. */ +# define BIG 700 +# elif defined(MSWINCE) || defined(RTEMS) + /* WinCE only allows 64K stacks */ +# define BIG 500 +# elif defined(OSF1) + /* OSF has limited stack space by default, and large frames. */ +# define BIG 200 +# elif defined(__MACH__) && defined(__ppc64__) +# define BIG 2500 +# else +# define BIG 4500 +# endif + + a_set(ints(1, 49)); + b = ints(1, 50); + c = ints(1, BIG); + d = uncollectable_ints(1, 100); + test_generic_malloc_or_special(d); + e = uncollectable_ints(1, 1); + /* Check that realloc updates object descriptors correctly */ + AO_fetch_and_add1(&collectable_count); + f = (sexpr *)GC_MALLOC(4 * sizeof(sexpr)); + f = (sexpr *)GC_REALLOC((void *)f, 6 * sizeof(sexpr)); + CHECK_OUT_OF_MEMORY(f); + AO_fetch_and_add1(&realloc_count); + f[5] = ints(1,17); + AO_fetch_and_add1(&collectable_count); + g = (sexpr *)GC_MALLOC(513 * sizeof(sexpr)); + test_generic_malloc_or_special(g); + g = (sexpr *)GC_REALLOC((void *)g, 800 * sizeof(sexpr)); + CHECK_OUT_OF_MEMORY(g); + AO_fetch_and_add1(&realloc_count); + g[799] = ints(1,18); + AO_fetch_and_add1(&collectable_count); + h = (sexpr *)GC_MALLOC(1025 * sizeof(sexpr)); + h = (sexpr *)GC_REALLOC((void *)h, 2000 * sizeof(sexpr)); + CHECK_OUT_OF_MEMORY(h); + AO_fetch_and_add1(&realloc_count); +# ifdef GC_GCJ_SUPPORT + h[1999] = gcj_ints(1,200); + for (i = 0; i < 51; ++i) + h[1999] = gcj_reverse(h[1999]); + /* Leave it as the reversed list for now. */ +# else + h[1999] = ints(1,200); +# endif + /* Try to force some collections and reuse of small list elements */ + for (i = 0; i < 10; i++) { + (void)ints(1, BIG); + } + /* Superficially test interior pointer recognition on stack */ + c = (sexpr)((char *)c + sizeof(char *)); + d = (sexpr)((char *)d + sizeof(char *)); + + GC_FREE((void *)e); + + check_ints(b,1,50); + check_ints(a_get(),1,49); + for (i = 0; i < 50; i++) { + check_ints(b,1,50); + b = reverse(reverse(b)); + } + check_ints(b,1,50); + check_ints(a_get(),1,49); + for (i = 0; i < 60; i++) { +# if (defined(GC_PTHREADS) || defined(GC_WIN32_THREADS)) \ + && (NTHREADS > 0) + if (i % 10 == 0) fork_a_thread(); +# endif + /* This maintains the invariant that a always points to a list */ + /* of 49 integers. Thus, this is thread safe without locks, */ + /* assuming acquire/release barriers in a_get/set() and atomic */ + /* pointer assignments (otherwise, e.g., check_ints() may see */ + /* an uninitialized object returned by GC_MALLOC_STUBBORN). */ + a_set(reverse(reverse(a_get()))); +# if !defined(AT_END) && !defined(THREADS) + /* This is not thread safe, since realloc explicitly deallocates */ + a_set(GC_REALLOC(a_get(), (i & 1) != 0 ? 500 : 8200)); + AO_fetch_and_add1(&realloc_count); +# endif + } + check_ints(a_get(),1,49); + check_ints(b,1,50); + + /* Restore c and d values. */ + c = (sexpr)((char *)c - sizeof(char *)); + d = (sexpr)((char *)d - sizeof(char *)); + + check_ints(c,1,BIG); + check_uncollectable_ints(d, 1, 100); + check_ints(f[5], 1,17); + check_ints(g[799], 1,18); +# ifdef GC_GCJ_SUPPORT + h[1999] = gcj_reverse(h[1999]); +# endif + check_ints(h[1999], 1,200); +# ifndef THREADS + a_set(NULL); +# endif + *(sexpr volatile *)&b = 0; + *(sexpr volatile *)&c = 0; + return 0; +} + +void reverse_test(void) +{ + /* Test GC_do_blocking/GC_call_with_gc_active. */ + (void)GC_do_blocking(reverse_test_inner, 0); +} + +/* + * The rest of this builds balanced binary trees, checks that they don't + * disappear, and tests finalization. + */ +typedef struct treenode { + int level; + struct treenode * lchild; + struct treenode * rchild; +} tn; + +int finalizable_count = 0; +int finalized_count = 0; +int dropped_something = 0; + +void GC_CALLBACK finalizer(void * obj, void * client_data) +{ + tn * t = (tn *)obj; + + FINALIZER_LOCK(); + if ((int)(GC_word)client_data != t -> level) { + GC_printf("Wrong finalization data - collector is broken\n"); + FAIL; + } + finalized_count++; + t -> level = -1; /* detect duplicate finalization immediately */ + FINALIZER_UNLOCK(); +} + +# define MAX_FINALIZED ((NTHREADS+1)*4000) + +# if !defined(MACOS) + GC_FAR GC_word live_indicators[MAX_FINALIZED] = {0}; +# ifndef GC_LONG_REFS_NOT_NEEDED + GC_FAR void *live_long_refs[MAX_FINALIZED] = { NULL }; +# endif +#else + /* Too big for THINK_C. have to allocate it dynamically. */ + GC_word *live_indicators = 0; +# ifndef GC_LONG_REFS_NOT_NEEDED +# define GC_LONG_REFS_NOT_NEEDED +# endif +#endif + +int live_indicators_count = 0; + +tn * mktree(int n) +{ + tn * result = (tn *)GC_MALLOC(sizeof(tn)); + + AO_fetch_and_add1(&collectable_count); +# if defined(MACOS) + /* get around static data limitations. */ + if (!live_indicators) { + live_indicators = + (GC_word*)NewPtrClear(MAX_FINALIZED * sizeof(GC_word)); + CHECK_OUT_OF_MEMORY(live_indicators); + } +# endif + if (n == 0) return(0); + CHECK_OUT_OF_MEMORY(result); + result -> level = n; + result -> lchild = mktree(n-1); + result -> rchild = mktree(n-1); + if (AO_fetch_and_add1(&extra_count) % 17 == 0 && n >= 2) { + tn * tmp; + + CHECK_OUT_OF_MEMORY(result->lchild); + tmp = result -> lchild -> rchild; + CHECK_OUT_OF_MEMORY(result->rchild); + result -> lchild -> rchild = result -> rchild -> lchild; + result -> rchild -> lchild = tmp; + } + if (AO_fetch_and_add1(&extra_count) % 119 == 0) { +# ifndef GC_NO_FINALIZATION + int my_index; + void *new_link; +# endif + + { + FINALIZER_LOCK(); + /* Losing a count here causes erroneous report of failure. */ + finalizable_count++; +# ifndef GC_NO_FINALIZATION + my_index = live_indicators_count++; +# endif + FINALIZER_UNLOCK(); + } + +# ifndef GC_NO_FINALIZATION + GC_REGISTER_FINALIZER((void *)result, finalizer, (void *)(GC_word)n, + (GC_finalization_proc *)0, (void * *)0); + if (my_index >= MAX_FINALIZED) { + GC_printf("live_indicators overflowed\n"); + FAIL; + } + live_indicators[my_index] = 13; + if (GC_GENERAL_REGISTER_DISAPPEARING_LINK( + (void * *)(&(live_indicators[my_index])), result) != 0) { + GC_printf("GC_general_register_disappearing_link failed\n"); + FAIL; + } + if (GC_move_disappearing_link((void **)(&(live_indicators[my_index])), + (void **)(&(live_indicators[my_index]))) != GC_SUCCESS) { + GC_printf("GC_move_disappearing_link(link,link) failed\n"); + FAIL; + } + new_link = (void *)live_indicators[my_index]; + if (GC_move_disappearing_link((void **)(&(live_indicators[my_index])), + &new_link) != GC_SUCCESS) { + GC_printf("GC_move_disappearing_link(new_link) failed\n"); + FAIL; + } + if (GC_unregister_disappearing_link(&new_link) == 0) { + GC_printf("GC_unregister_disappearing_link failed\n"); + FAIL; + } + if (GC_move_disappearing_link((void **)(&(live_indicators[my_index])), + &new_link) != GC_NOT_FOUND) { + GC_printf("GC_move_disappearing_link(new_link) failed 2\n"); + FAIL; + } + if (GC_GENERAL_REGISTER_DISAPPEARING_LINK( + (void * *)(&(live_indicators[my_index])), result) != 0) { + GC_printf("GC_general_register_disappearing_link failed 2\n"); + FAIL; + } +# ifndef GC_LONG_REFS_NOT_NEEDED + if (GC_REGISTER_LONG_LINK(&live_long_refs[my_index], result) != 0) { + GC_printf("GC_register_long_link failed\n"); + FAIL; + } + if (GC_move_long_link(&live_long_refs[my_index], + &live_long_refs[my_index]) != GC_SUCCESS) { + GC_printf("GC_move_long_link(link,link) failed\n"); + FAIL; + } + new_link = live_long_refs[my_index]; + if (GC_move_long_link(&live_long_refs[my_index], + &new_link) != GC_SUCCESS) { + GC_printf("GC_move_long_link(new_link) failed\n"); + FAIL; + } + if (GC_unregister_long_link(&new_link) == 0) { + GC_printf("GC_unregister_long_link failed\n"); + FAIL; + } + if (GC_move_long_link(&live_long_refs[my_index], + &new_link) != GC_NOT_FOUND) { + GC_printf("GC_move_long_link(new_link) failed 2\n"); + FAIL; + } + if (GC_REGISTER_LONG_LINK(&live_long_refs[my_index], result) != 0) { + GC_printf("GC_register_long_link failed 2\n"); + FAIL; + } +# endif +# endif + GC_reachable_here(result); + } + return(result); +} + +void chktree(tn *t, int n) +{ + if (0 == n) { + if (NULL == t) /* is a leaf? */ + return; + GC_printf("Clobbered a leaf - collector is broken\n"); + FAIL; + } + if (t -> level != n) { + GC_printf("Lost a node at level %d - collector is broken\n", n); + FAIL; + } + if (AO_fetch_and_add1(&extra_count) % 373 == 0) { + (void)GC_MALLOC((unsigned)AO_fetch_and_add1(&extra_count) % 5001); + AO_fetch_and_add1(&collectable_count); + } + chktree(t -> lchild, n-1); + if (AO_fetch_and_add1(&extra_count) % 73 == 0) { + (void)GC_MALLOC((unsigned)AO_fetch_and_add1(&extra_count) % 373); + AO_fetch_and_add1(&collectable_count); + } + chktree(t -> rchild, n-1); +} + + +#if defined(GC_PTHREADS) +pthread_key_t fl_key; + +void * alloc8bytes(void) +{ +# if defined(SMALL_CONFIG) || defined(GC_DEBUG) + AO_fetch_and_add1(&collectable_count); + return(GC_MALLOC(8)); +# else + void ** my_free_list_ptr; + void * my_free_list; + + my_free_list_ptr = (void **)pthread_getspecific(fl_key); + if (my_free_list_ptr == 0) { + my_free_list_ptr = GC_NEW_UNCOLLECTABLE(void *); + CHECK_OUT_OF_MEMORY(my_free_list_ptr); + AO_fetch_and_add1(&uncollectable_count); + if (pthread_setspecific(fl_key, my_free_list_ptr) != 0) { + GC_printf("pthread_setspecific failed\n"); + FAIL; + } + } + my_free_list = *my_free_list_ptr; + if (my_free_list == 0) { + my_free_list = GC_malloc_many(8); + CHECK_OUT_OF_MEMORY(my_free_list); + } + *my_free_list_ptr = GC_NEXT(my_free_list); + GC_NEXT(my_free_list) = 0; + AO_fetch_and_add1(&collectable_count); + return(my_free_list); +# endif +} + +#else +# define alloc8bytes() GC_MALLOC_ATOMIC(8) +#endif + +#include "gc_inline.h" + +void test_tinyfl(void) +{ + void *results[3]; + void *tfls[3][GC_TINY_FREELISTS]; + +# ifndef DONT_ADD_BYTE_AT_END + if (GC_get_all_interior_pointers()) return; /* skip */ +# endif + BZERO(tfls, sizeof(tfls)); + /* TODO: Improve testing of FAST_MALLOC functionality. */ + GC_MALLOC_WORDS(results[0], 11, tfls[0]); + GC_MALLOC_ATOMIC_WORDS(results[1], 20, tfls[1]); + GC_CONS(results[2], results[0], results[1], tfls[2]); +} + +void alloc_small(int n) +{ + int i; + + for (i = 0; i < n; i += 8) { + if (alloc8bytes() == 0) { + GC_printf("Out of memory\n"); + FAIL; + } + AO_fetch_and_add1(&atomic_count); + } +} + +# if defined(THREADS) && defined(GC_DEBUG) +# ifdef VERY_SMALL_CONFIG +# define TREE_HEIGHT 12 +# else +# define TREE_HEIGHT 15 +# endif +# else +# ifdef VERY_SMALL_CONFIG +# define TREE_HEIGHT 13 +# else +# define TREE_HEIGHT 16 +# endif +# endif +void tree_test(void) +{ + tn * root; + int i; + + root = mktree(TREE_HEIGHT); +# ifndef VERY_SMALL_CONFIG + alloc_small(5000000); +# endif + chktree(root, TREE_HEIGHT); + FINALIZER_LOCK(); + if (finalized_count && !dropped_something) { + GC_printf("Premature finalization - collector is broken\n"); + FAIL; + } + dropped_something = 1; + FINALIZER_UNLOCK(); + GC_noop1((word)root); /* Root needs to remain live until */ + /* dropped_something is set. */ + root = mktree(TREE_HEIGHT); + chktree(root, TREE_HEIGHT); + for (i = TREE_HEIGHT; i >= 0; i--) { + root = mktree(i); + chktree(root, i); + } +# ifndef VERY_SMALL_CONFIG + alloc_small(5000000); +# endif +} + +unsigned n_tests = 0; + +const GC_word bm_huge[320 / CPP_WORDSZ] = { +# if CPP_WORDSZ == 32 + 0xffffffff, + 0xffffffff, + 0xffffffff, + 0xffffffff, + 0xffffffff, +# endif + (GC_word)((GC_signed_word)-1), + (GC_word)((GC_signed_word)-1), + (GC_word)((GC_signed_word)-1), + (GC_word)((GC_signed_word)-1), + ((GC_word)((GC_signed_word)-1)) >> 8 /* highest byte is zero */ +}; + +/* A very simple test of explicitly typed allocation */ +void typed_test(void) +{ + GC_word * old, * new; + GC_word bm3[1] = {0}; + GC_word bm2[1] = {0}; + GC_word bm_large[1] = { 0xf7ff7fff }; + GC_descr d1; + GC_descr d2; + GC_descr d3 = GC_make_descriptor(bm_large, 32); + GC_descr d4 = GC_make_descriptor(bm_huge, 320); + GC_word * x = (GC_word *)GC_malloc_explicitly_typed( + 320 * sizeof(GC_word) + 123, d4); + int i; + + AO_fetch_and_add1(&collectable_count); +# ifndef LINT + (void)GC_make_descriptor(bm_large, 32); +# endif + if (GC_get_bit(bm_huge, 32) == 0 || GC_get_bit(bm_huge, 311) == 0 + || GC_get_bit(bm_huge, 319) != 0) { + GC_printf("Bad GC_get_bit() or bm_huge initialization\n"); + FAIL; + } + GC_set_bit(bm3, 0); + GC_set_bit(bm3, 1); + d1 = GC_make_descriptor(bm3, 2); + GC_set_bit(bm2, 1); + d2 = GC_make_descriptor(bm2, 2); + old = 0; + for (i = 0; i < 4000; i++) { + new = (GC_word *) GC_malloc_explicitly_typed(4 * sizeof(GC_word), d1); + CHECK_OUT_OF_MEMORY(new); + AO_fetch_and_add1(&collectable_count); + if (0 != new[0] || 0 != new[1]) { + GC_printf("Bad initialization by GC_malloc_explicitly_typed\n"); + FAIL; + } + new[0] = 17; + new[1] = (GC_word)old; + old = new; + AO_fetch_and_add1(&collectable_count); + new = (GC_word *) GC_malloc_explicitly_typed(4 * sizeof(GC_word), d2); + CHECK_OUT_OF_MEMORY(new); + new[0] = 17; + new[1] = (GC_word)old; + old = new; + AO_fetch_and_add1(&collectable_count); + new = (GC_word *) GC_malloc_explicitly_typed(33 * sizeof(GC_word), d3); + CHECK_OUT_OF_MEMORY(new); + new[0] = 17; + new[1] = (GC_word)old; + old = new; + AO_fetch_and_add1(&collectable_count); + new = (GC_word *) GC_calloc_explicitly_typed(4, 2 * sizeof(GC_word), + d1); + CHECK_OUT_OF_MEMORY(new); + new[0] = 17; + new[1] = (GC_word)old; + old = new; + AO_fetch_and_add1(&collectable_count); + if (i & 0xff) { + new = (GC_word *) GC_calloc_explicitly_typed(7, 3 * sizeof(GC_word), + d2); + } else { + new = (GC_word *) GC_calloc_explicitly_typed(1001, + 3 * sizeof(GC_word), + d2); + if (new && (0 != new[0] || 0 != new[1])) { + GC_printf("Bad initialization by GC_malloc_explicitly_typed\n"); + FAIL; + } + } + CHECK_OUT_OF_MEMORY(new); + new[0] = 17; + new[1] = (GC_word)old; + old = new; + } + for (i = 0; i < 20000; i++) { + if (new[0] != 17) { + GC_printf("Typed alloc failed at %d\n", i); + FAIL; + } + new[0] = 0; + old = new; + new = (GC_word *)(old[1]); + } + GC_gcollect(); + GC_noop1((word)x); +} + +#ifdef DBG_HDRS_ALL +# define set_print_procs() (void)(A.dummy = 17) +#else + int fail_count = 0; + + void GC_CALLBACK fail_proc1(void *x GC_ATTR_UNUSED) + { + fail_count++; + } + + void set_print_procs(void) + { + /* Set these global variables just once to avoid TSan false positives. */ + A.dummy = 17; + GC_is_valid_displacement_print_proc = fail_proc1; + GC_is_visible_print_proc = fail_proc1; + } + +# ifdef THREADS +# define TEST_FAIL_COUNT(n) 1 +# else +# define TEST_FAIL_COUNT(n) (fail_count >= (n)) +# endif +#endif /* !DBG_HDRS_ALL */ + +static void uniq(void *p, ...) { + va_list a; + void *q[100]; + int n = 0, i, j; + q[n++] = p; + va_start(a,p); + for (;(q[n] = va_arg(a,void *)) != NULL;n++) ; + va_end(a); + for (i=0; i finalizable_count + || finalized_count < finalizable_count/2) { + GC_printf("finalization is probably broken\n"); + FAIL; + } else { + GC_printf("finalization is probably ok\n"); + } + still_live = 0; + for (i = 0; i < MAX_FINALIZED; i++) { + if (live_indicators[i] != 0) { + still_live++; + } +# ifndef GC_LONG_REFS_NOT_NEEDED + if (live_long_refs[i] != NULL) { + still_long_live++; + } +# endif + } + i = finalizable_count - finalized_count - still_live; + if (0 != i) { + GC_printf("%d disappearing links remain and %d more objects " + "were not finalized\n", still_live, i); + if (i > 10) { + GC_printf("\tVery suspicious!\n"); + } else { + GC_printf("\tSlightly suspicious, but probably OK\n"); + } + } +# ifndef GC_LONG_REFS_NOT_NEEDED + if (0 != still_long_live) { + GC_printf("%d 'long' links remain\n", still_long_live); + } +# endif +# endif + GC_printf("Total number of bytes allocated is %lu\n", + (unsigned long)GC_get_total_bytes()); + GC_printf("Total memory use by allocated blocks is %lu bytes\n", + (unsigned long)GC_get_memory_use()); + GC_printf("Final heap size is %lu bytes\n", + (unsigned long)GC_get_heap_size()); + if (GC_get_total_bytes() < (size_t)n_tests * +# ifdef VERY_SMALL_CONFIG + 2700000 +# else + 33500000 +# endif + ) { + GC_printf("Incorrect execution - missed some allocations\n"); + FAIL; + } + if (GC_get_heap_size() + GC_get_unmapped_bytes() > max_heap_sz) { + GC_printf("Unexpected heap growth - collector may be broken" + " (heapsize: %lu, expected: %lu)\n", + (unsigned long)(GC_get_heap_size() + GC_get_unmapped_bytes()), + (unsigned long)max_heap_sz); + FAIL; + } + GC_printf("Final number of reachable objects is %u\n", obj_count); + +# ifndef GC_GET_HEAP_USAGE_NOT_NEEDED + /* Get global counters (just to check the functions work). */ + GC_get_heap_usage_safe(NULL, NULL, NULL, NULL, NULL); + { + struct GC_prof_stats_s stats; + (void)GC_get_prof_stats(&stats, sizeof(stats)); +# ifdef THREADS + (void)GC_get_prof_stats_unsafe(&stats, sizeof(stats)); +# endif + } +# endif + +# ifdef THREADS + GC_unregister_my_thread(); /* just to check it works (for main) */ +# endif + GC_printf("Completed %u collections", (unsigned)GC_get_gc_no()); +# ifdef PARALLEL_MARK + GC_printf(" (using %d marker threads)", GC_get_parallel() + 1); +# endif + GC_printf("\n" "Collector appears to work\n"); +} + +#if defined(MACOS) +void SetMinimumStack(long minSize) +{ + if (minSize > LMGetDefltStack()) + { + long newApplLimit = (long) GetApplLimit() + - (minSize - LMGetDefltStack()); + SetApplLimit((Ptr) newApplLimit); + MaxApplZone(); + } +} + +#define cMinStackSpace (512L * 1024L) + +#endif + +void GC_CALLBACK warn_proc(char *msg, GC_word p) +{ + GC_printf(msg, (unsigned long)p); + /*FAIL;*/ +} + +#if defined(CPPCHECK) +# include "javaxfc.h" /* for GC_finalize_all */ +# define UNTESTED(sym) GC_noop1((word)&sym) +#endif + +#if defined(MSWINCE) && defined(UNDER_CE) +# define WINMAIN_LPTSTR LPWSTR +#else +# define WINMAIN_LPTSTR LPSTR +#endif + +#if !defined(PCR) && !defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS) \ + || defined(LINT) +#if ((defined(MSWIN32) && !defined(__MINGW32__)) || defined(MSWINCE)) \ + && !defined(NO_WINMAIN_ENTRY) + int APIENTRY WinMain(HINSTANCE instance GC_ATTR_UNUSED, + HINSTANCE prev GC_ATTR_UNUSED, + WINMAIN_LPTSTR cmd GC_ATTR_UNUSED, + int n GC_ATTR_UNUSED) +#elif defined(RTEMS) +# include +# define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER +# define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER +# define CONFIGURE_RTEMS_INIT_TASKS_TABLE +# define CONFIGURE_MAXIMUM_TASKS 1 +# define CONFIGURE_INIT +# define CONFIGURE_INIT_TASK_STACK_SIZE (64*1024) +# include + rtems_task Init(rtems_task_argument ignord) +#else + int main(void) +#endif +{ +# if defined(CPPCHECK) && !defined(NO_WINMAIN_ENTRY) \ + && ((defined(MSWIN32) && !defined(__MINGW32__)) || defined(MSWINCE)) + GC_noop1((GC_word)&WinMain); +# elif defined(CPPCHECK) && defined(RTEMS) + GC_noop1((GC_word)&Init); +# endif + n_tests = 0; +# if defined(MACOS) + /* Make sure we have lots and lots of stack space. */ + SetMinimumStack(cMinStackSpace); + /* Cheat and let stdio initialize toolbox for us. */ + printf("Testing GC Macintosh port\n"); +# endif + GC_COND_INIT(); + GC_set_warn_proc(warn_proc); +# if (defined(MPROTECT_VDB) || defined(PROC_VDB) || defined(GWW_VDB)) \ + && !defined(MAKE_BACK_GRAPH) && !defined(NO_INCREMENTAL) \ + && !(defined(MPROTECT_VDB) && defined(USE_MUNMAP)) + GC_enable_incremental(); + GC_printf("Switched to incremental mode\n"); +# ifdef PROC_VDB + GC_printf("Reading dirty bits from /proc\n"); +# elif defined(GWW_VDB) + GC_printf("Using GetWriteWatch-based implementation\n"); +# ifdef MPROTECT_VDB + GC_printf("Or emulating dirty bits with mprotect/signals\n"); +# endif +# else /* MPROTECT_VDB && !GWW_VDB */ + GC_printf("Emulating dirty bits with mprotect/signals\n"); +# endif +# endif + set_print_procs(); + run_one_test(); + check_heap_stats(); +# ifndef MSWINCE + fflush(stdout); +# endif +# if defined(CPPCHECK) + /* Entry points we should be testing, but aren't. */ +# ifndef GC_DEBUG + UNTESTED(GC_debug_end_stubborn_change); + UNTESTED(GC_debug_generic_or_special_malloc); + UNTESTED(GC_debug_register_displacement); + UNTESTED(GC_post_incr); + UNTESTED(GC_pre_incr); +# ifdef GC_GCJ_SUPPORT + UNTESTED(GC_debug_gcj_malloc); +# endif +# endif +# ifdef AMIGA +# ifdef GC_AMIGA_FASTALLOC + UNTESTED(GC_amiga_get_mem); +# endif +# ifndef GC_AMIGA_ONLYFAST + UNTESTED(GC_amiga_set_toany); +# endif +# endif +# if defined(MACOS) && defined(USE_TEMPORARY_MEMORY) + UNTESTED(GC_MacTemporaryNewPtr); +# endif +# if !defined(_M_AMD64) && defined(_MSC_VER) + UNTESTED(GetFileLineFromStack); + UNTESTED(GetModuleNameFromStack); + UNTESTED(GetSymbolNameFromStack); +# endif + UNTESTED(GC_get_bytes_since_gc); + UNTESTED(GC_get_dont_expand); + UNTESTED(GC_get_dont_precollect); + UNTESTED(GC_get_finalize_on_demand); + UNTESTED(GC_get_finalizer_notifier); + UNTESTED(GC_get_find_leak); + UNTESTED(GC_get_force_unmap_on_gcollect); + UNTESTED(GC_get_free_bytes); + UNTESTED(GC_get_free_space_divisor); + UNTESTED(GC_get_full_freq); + UNTESTED(GC_get_java_finalization); + UNTESTED(GC_get_max_retries); + UNTESTED(GC_get_no_dls); + UNTESTED(GC_get_non_gc_bytes); + UNTESTED(GC_get_on_collection_event); + UNTESTED(GC_get_on_heap_resize); + UNTESTED(GC_get_pages_executable); + UNTESTED(GC_get_push_other_roots); + UNTESTED(GC_get_start_callback); + UNTESTED(GC_get_stop_func); + UNTESTED(GC_get_time_limit); + UNTESTED(GC_get_warn_proc); + UNTESTED(GC_is_disabled); + UNTESTED(GC_set_dont_precollect); + UNTESTED(GC_set_finalize_on_demand); + UNTESTED(GC_set_finalizer_notifier); + UNTESTED(GC_set_free_space_divisor); + UNTESTED(GC_set_full_freq); + UNTESTED(GC_set_java_finalization); + UNTESTED(GC_set_max_retries); + UNTESTED(GC_set_no_dls); + UNTESTED(GC_set_non_gc_bytes); + UNTESTED(GC_set_on_collection_event); + UNTESTED(GC_set_on_heap_resize); + UNTESTED(GC_set_oom_fn); + UNTESTED(GC_set_pages_executable); + UNTESTED(GC_set_push_other_roots); + UNTESTED(GC_set_start_callback); + UNTESTED(GC_set_stop_func); + UNTESTED(GC_set_time_limit); + UNTESTED(GC_malloc_explicitly_typed_ignore_off_page); + UNTESTED(GC_debug_change_stubborn); + UNTESTED(GC_debug_strndup); + UNTESTED(GC_strndup); + UNTESTED(GC_posix_memalign); + UNTESTED(GC_new_free_list); + UNTESTED(GC_new_kind); + UNTESTED(GC_new_proc); + UNTESTED(GC_clear_roots); + UNTESTED(GC_exclude_static_roots); + UNTESTED(GC_expand_hp); + UNTESTED(GC_register_describe_type_fn); + UNTESTED(GC_register_has_static_roots_callback); +# if !defined(PCR) && !defined(SMALL_CONFIG) + UNTESTED(GC_get_abort_func); + UNTESTED(GC_set_abort_func); +# endif +# ifdef GC_GCJ_SUPPORT + UNTESTED(GC_gcj_malloc_ignore_off_page); +# endif +# ifndef NO_DEBUGGING + UNTESTED(GC_dump_regions); + UNTESTED(GC_is_tmp_root); + UNTESTED(GC_print_free_list); +# endif +# ifdef TRACE_BUF + UNTESTED(GC_print_trace); +# endif +# ifndef GC_NO_FINALIZATION + UNTESTED(GC_debug_register_finalizer_unreachable); + UNTESTED(GC_get_await_finalize_proc); + UNTESTED(GC_register_disappearing_link); + UNTESTED(GC_set_await_finalize_proc); + UNTESTED(GC_should_invoke_finalizers); +# ifndef JAVA_FINALIZATION_NOT_NEEDED + UNTESTED(GC_finalize_all); +# endif +# ifndef NO_DEBUGGING + UNTESTED(GC_dump_finalization); +# endif +# ifndef GC_TOGGLE_REFS_NOT_NEEDED + UNTESTED(GC_get_toggleref_func); + UNTESTED(GC_set_toggleref_func); + UNTESTED(GC_toggleref_add); +# endif +# endif +# if !defined(OS2) && !defined(MACOS) && !defined(GC_ANDROID_LOG) \ + && !defined(MSWIN32) && !defined(MSWINCE) + UNTESTED(GC_set_log_fd); +# endif +# ifdef THREADS + UNTESTED(GC_allow_register_threads); + UNTESTED(GC_get_on_thread_event); + UNTESTED(GC_register_altstack); + UNTESTED(GC_set_on_thread_event); +# endif +# ifndef REDIRECT_MALLOC_IN_HEADER +# ifdef REDIRECT_MALLOC +# ifndef strndup + UNTESTED(strndup); +# endif +# ifndef strdup + UNTESTED(strdup); +# endif +# endif +# ifdef REDIRECT_REALLOC + UNTESTED(realloc); +# endif +# endif /* !REDIRECT_MALLOC_IN_HEADER */ +# ifdef GC_REQUIRE_WCSDUP + UNTESTED(GC_wcsdup); + UNTESTED(GC_debug_wcsdup); +# endif +# endif +# ifdef MSWIN32 + GC_win32_free_heap(); +# endif +# ifdef RTEMS + exit(0); +# else + return(0); +# endif +} +# endif + +#if defined(GC_WIN32_THREADS) && !defined(GC_PTHREADS) + +DWORD __stdcall thr_run_one_test(void * arg GC_ATTR_UNUSED) +{ + run_one_test(); + return 0; +} + +#ifdef MSWINCE +HANDLE win_created_h; +HWND win_handle; + +LRESULT CALLBACK window_proc(HWND hwnd, UINT uMsg, WPARAM wParam, + LPARAM lParam) +{ + LRESULT ret = 0; + switch (uMsg) { + case WM_HIBERNATE: + GC_printf("Received WM_HIBERNATE, calling GC_gcollect\n"); + /* Force "unmap as much memory as possible" mode. */ + GC_gcollect_and_unmap(); + break; + case WM_CLOSE: + GC_printf("Received WM_CLOSE, closing window\n"); + DestroyWindow(hwnd); + break; + case WM_DESTROY: + PostQuitMessage(0); + break; + default: + ret = DefWindowProc(hwnd, uMsg, wParam, lParam); + break; + } + return ret; +} + +DWORD __stdcall thr_window(void * arg GC_ATTR_UNUSED) +{ + WNDCLASS win_class = { + CS_NOCLOSE, + window_proc, + 0, + 0, + GetModuleHandle(NULL), + NULL, + NULL, + (HBRUSH)(COLOR_APPWORKSPACE+1), + NULL, + TEXT("GCtestWindow") + }; + MSG msg; + + if (!RegisterClass(&win_class)) + FAIL; + + win_handle = CreateWindowEx( + 0, + TEXT("GCtestWindow"), + TEXT("GCtest"), + 0, + CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, + NULL, + NULL, + GetModuleHandle(NULL), + NULL); + + if (win_handle == NULL) + FAIL; + + SetEvent(win_created_h); + + ShowWindow(win_handle, SW_SHOW); + UpdateWindow(win_handle); + + while (GetMessage(&msg, NULL, 0, 0)) { + TranslateMessage(&msg); + DispatchMessage(&msg); + } + + return 0; +} +#endif + +#if !defined(NO_WINMAIN_ENTRY) + int APIENTRY WinMain(HINSTANCE instance GC_ATTR_UNUSED, + HINSTANCE prev GC_ATTR_UNUSED, + WINMAIN_LPTSTR cmd GC_ATTR_UNUSED, + int n GC_ATTR_UNUSED) +#else + int main(void) +#endif +{ +# if NTHREADS > 0 + HANDLE h[NTHREADS]; + int i; +# endif +# ifdef MSWINCE + HANDLE win_thr_h; +# endif + DWORD thread_id; + +# if defined(CPPCHECK) && !defined(NO_WINMAIN_ENTRY) + GC_noop1((GC_word)&WinMain); +# endif +# if defined(GC_DLL) && !defined(GC_NO_THREADS_DISCOVERY) \ + && !defined(MSWINCE) && !defined(THREAD_LOCAL_ALLOC) \ + && !defined(PARALLEL_MARK) + GC_use_threads_discovery(); + /* Test with implicit thread registration if possible. */ + GC_printf("Using DllMain to track threads\n"); +# endif + GC_COND_INIT(); +# if !defined(MAKE_BACK_GRAPH) && !defined(NO_INCREMENTAL) + GC_enable_incremental(); +# endif + InitializeCriticalSection(&incr_cs); + GC_set_warn_proc(warn_proc); +# ifdef MSWINCE + win_created_h = CreateEvent(NULL, FALSE, FALSE, NULL); + if (win_created_h == (HANDLE)NULL) { + GC_printf("Event creation failed %d\n", (int)GetLastError()); + FAIL; + } + win_thr_h = GC_CreateThread(NULL, 0, thr_window, 0, 0, &thread_id); + if (win_thr_h == (HANDLE)NULL) { + GC_printf("Thread creation failed %d\n", (int)GetLastError()); + FAIL; + } + if (WaitForSingleObject(win_created_h, INFINITE) != WAIT_OBJECT_0) + FAIL; + CloseHandle(win_created_h); +# endif + set_print_procs(); +# if NTHREADS > 0 + for (i = 0; i < NTHREADS; i++) { + h[i] = GC_CreateThread(NULL, 0, thr_run_one_test, 0, 0, &thread_id); + if (h[i] == (HANDLE)NULL) { + GC_printf("Thread creation failed %d\n", (int)GetLastError()); + FAIL; + } + } +# endif /* NTHREADS > 0 */ + run_one_test(); +# if NTHREADS > 0 + for (i = 0; i < NTHREADS; i++) { + if (WaitForSingleObject(h[i], INFINITE) != WAIT_OBJECT_0) { + GC_printf("Thread wait failed %d\n", (int)GetLastError()); + FAIL; + } + } +# endif /* NTHREADS > 0 */ +# ifdef MSWINCE + PostMessage(win_handle, WM_CLOSE, 0, 0); + if (WaitForSingleObject(win_thr_h, INFINITE) != WAIT_OBJECT_0) + FAIL; +# endif + check_heap_stats(); +# if defined(CPPCHECK) && defined(GC_WIN32_THREADS) + UNTESTED(GC_ExitThread); +# if !defined(MSWINCE) && !defined(CYGWIN32) + UNTESTED(GC_beginthreadex); + UNTESTED(GC_endthreadex); +# endif +# endif + return(0); +} + +#endif /* GC_WIN32_THREADS */ + + +#ifdef PCR +int test(void) +{ + PCR_Th_T * th1; + PCR_Th_T * th2; + int code; + +# if defined(CPPCHECK) + GC_noop1((word)&PCR_GC_Run); + GC_noop1((word)&PCR_GC_Setup); + GC_noop1((word)&test); +# endif + n_tests = 0; + /* GC_enable_incremental(); */ + GC_set_warn_proc(warn_proc); + set_print_procs(); + th1 = PCR_Th_Fork(run_one_test, 0); + th2 = PCR_Th_Fork(run_one_test, 0); + run_one_test(); + if (PCR_Th_T_Join(th1, &code, NIL, PCR_allSigsBlocked, PCR_waitForever) + != PCR_ERes_okay || code != 0) { + GC_printf("Thread 1 failed\n"); + } + if (PCR_Th_T_Join(th2, &code, NIL, PCR_allSigsBlocked, PCR_waitForever) + != PCR_ERes_okay || code != 0) { + GC_printf("Thread 2 failed\n"); + } + check_heap_stats(); + return(0); +} +#endif + +#if defined(GC_PTHREADS) +void * thr_run_one_test(void * arg GC_ATTR_UNUSED) +{ + run_one_test(); + return(0); +} + +#ifdef GC_DEBUG +# define GC_free GC_debug_free +#endif + +int main(void) +{ +# if NTHREADS > 0 + pthread_t th[NTHREADS]; + int i; +# endif + pthread_attr_t attr; + int code; +# ifdef GC_IRIX_THREADS + /* Force a larger stack to be preallocated */ + /* Since the initial can't always grow later. */ + *((volatile char *)&code - 1024*1024) = 0; /* Require 1 MB */ +# endif /* GC_IRIX_THREADS */ +# if defined(GC_HPUX_THREADS) + /* Default stack size is too small, especially with the 64 bit ABI */ + /* Increase it. */ + if (pthread_default_stacksize_np(1024*1024, 0) != 0) { + GC_printf("pthread_default_stacksize_np failed\n"); + } +# endif /* GC_HPUX_THREADS */ +# ifdef PTW32_STATIC_LIB + pthread_win32_process_attach_np (); + pthread_win32_thread_attach_np (); +# endif +# if defined(GC_DARWIN_THREADS) && !defined(GC_NO_THREADS_DISCOVERY) \ + && !defined(DARWIN_DONT_PARSE_STACK) && !defined(THREAD_LOCAL_ALLOC) + /* Test with the Darwin implicit thread registration. */ + GC_use_threads_discovery(); + GC_printf("Using Darwin task-threads-based world stop and push\n"); +# endif + GC_COND_INIT(); + + if ((code = pthread_attr_init(&attr)) != 0) { + GC_printf("pthread_attr_init failed, error=%d\n", code); + FAIL; + } +# if defined(GC_IRIX_THREADS) || defined(GC_FREEBSD_THREADS) \ + || defined(GC_DARWIN_THREADS) || defined(GC_AIX_THREADS) \ + || defined(GC_OPENBSD_THREADS) || defined(DEFAULT_STACK_MAYBE_SMALL) + if ((code = pthread_attr_setstacksize(&attr, 1000 * 1024)) != 0) { + GC_printf("pthread_attr_setstacksize failed, error=%d\n", code); + FAIL; + } +# endif + n_tests = 0; +# if defined(MPROTECT_VDB) && !defined(REDIRECT_MALLOC) \ + && !defined(MAKE_BACK_GRAPH) && !defined(USE_PROC_FOR_LIBRARIES) \ + && !defined(NO_INCREMENTAL) && !defined(USE_MUNMAP) + GC_enable_incremental(); + GC_printf("Switched to incremental mode\n"); + GC_printf("Emulating dirty bits with mprotect/signals\n"); +# endif + GC_set_warn_proc(warn_proc); + if ((code = pthread_key_create(&fl_key, 0)) != 0) { + GC_printf("Key creation failed %d\n", code); + FAIL; + } + set_print_procs(); +# if NTHREADS > 0 + for (i = 0; i < NTHREADS; ++i) { + if ((code = pthread_create(th+i, &attr, thr_run_one_test, 0)) != 0) { + GC_printf("Thread %d creation failed %d\n", i, code); + FAIL; + } + } +# endif + run_one_test(); +# if NTHREADS > 0 + for (i = 0; i < NTHREADS; ++i) { + if ((code = pthread_join(th[i], 0)) != 0) { + GC_printf("Thread %d failed %d\n", i, code); + FAIL; + } + } +# endif + check_heap_stats(); + (void)fflush(stdout); + (void)pthread_attr_destroy(&attr); +# if defined(CPPCHECK) + UNTESTED(GC_set_suspend_signal); + UNTESTED(GC_set_thr_restart_signal); +# ifndef GC_NO_DLOPEN + UNTESTED(GC_dlopen); +# endif +# ifndef GC_NO_PTHREAD_CANCEL + UNTESTED(GC_pthread_cancel); +# endif +# ifdef GC_HAVE_PTHREAD_EXIT + UNTESTED(GC_pthread_exit); +# endif +# ifndef GC_NO_PTHREAD_SIGMASK + UNTESTED(GC_pthread_sigmask); +# endif +# ifdef NO_TEST_HANDLE_FORK + UNTESTED(GC_atfork_child); + UNTESTED(GC_atfork_parent); + UNTESTED(GC_atfork_prepare); + UNTESTED(GC_set_handle_fork); + UNTESTED(GC_start_mark_threads); +# endif +# endif /* CPPCHECK */ +# ifdef PTW32_STATIC_LIB + pthread_win32_thread_detach_np (); + pthread_win32_process_detach_np (); +# endif + return(0); +} +#endif /* GC_PTHREADS */ diff --git a/tests/test_cpp.cc b/tests/test_cpp.cc new file mode 100644 index 0000000..2b774fb --- /dev/null +++ b/tests/test_cpp.cc @@ -0,0 +1,365 @@ +/**************************************************************************** +Copyright (c) 1994 by Xerox Corporation. All rights reserved. + +THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + +Permission is hereby granted to use or copy this program for any +purpose, provided the above notices are retained on all copies. +Permission to modify the code and to distribute modified code is +granted, provided the above notices are retained, and a notice that +the code was modified is included with the above copyright notice. +**************************************************************************** + +usage: test_cpp number-of-iterations + +This program tries to test the specific C++ functionality provided by +gc_c++.h that isn't tested by the more general test routines of the +collector. + +A recommended value for number-of-iterations is 10, which will take a +few minutes to complete. + +***************************************************************************/ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#undef GC_BUILD + +#include "gc_cpp.h" + +#include +#include +#include + +#ifndef DONT_USE_STD_ALLOCATOR +# include "gc_allocator.h" +#else + /* Note: This works only for ancient STL versions. */ +# include "new_gc_alloc.h" +#endif + +extern "C" { +# include "private/gcconfig.h" + +# ifndef GC_API_PRIV +# define GC_API_PRIV GC_API +# endif + GC_API_PRIV void GC_printf(const char * format, ...); + /* Use GC private output to reach the same log file. */ + /* Don't include gc_priv.h, since that may include Windows system */ + /* header files that don't take kindly to this context. */ +} + +#ifdef MSWIN32 +# include +#endif + +#ifdef GC_NAME_CONFLICT +# define USE_GC GC_NS_QUALIFY(UseGC) + struct foo * GC; +#else +# define USE_GC GC_NS_QUALIFY(GC) +#endif + +#define my_assert( e ) \ + if (! (e)) { \ + GC_printf( "Assertion failure in " __FILE__ ", line %d: " #e "\n", \ + __LINE__ ); \ + exit( 1 ); } + +#ifndef GC_ATTR_EXPLICIT +# if (__cplusplus >= 201103L) || defined(CPPCHECK) +# define GC_ATTR_EXPLICIT explicit +# else +# define GC_ATTR_EXPLICIT /* empty */ +# endif +#endif + +class A {public: + /* An uncollectible class. */ + + GC_ATTR_EXPLICIT A( int iArg ): i( iArg ) {} + void Test( int iArg ) { + my_assert( i == iArg );} + int i;}; + + +class B: public GC_NS_QUALIFY(gc), public A { public: + /* A collectible class. */ + + GC_ATTR_EXPLICIT B( int j ): A( j ) {} + virtual ~B() { + my_assert( deleting );} + static void Deleting( int on ) { + deleting = on;} + static int deleting;}; + +int B::deleting = 0; + + +class C: public GC_NS_QUALIFY(gc_cleanup), public A { public: + /* A collectible class with cleanup and virtual multiple inheritance. */ + + GC_ATTR_EXPLICIT C( int levelArg ): A( levelArg ), level( levelArg ) { + nAllocated++; + if (level > 0) { + left = new C( level - 1 ); + right = new C( level - 1 );} + else { + left = right = 0;}} + ~C() { + this->A::Test( level ); + nFreed++; + my_assert( level == 0 ? + left == 0 && right == 0 : + level == left->level + 1 && level == right->level + 1 ); + left = right = 0; + level = -123456;} + static void Test() { + my_assert( nFreed <= nAllocated && nFreed >= .8 * nAllocated );} + + static int nFreed; + static int nAllocated; + int level; + C* left; + C* right;}; + +int C::nFreed = 0; +int C::nAllocated = 0; + + +class D: public GC_NS_QUALIFY(gc) { public: + /* A collectible class with a static member function to be used as + an explicit clean-up function supplied to ::new. */ + + GC_ATTR_EXPLICIT D( int iArg ): i( iArg ) { + nAllocated++;} + static void CleanUp( void* obj, void* data ) { + D* self = static_cast(obj); + nFreed++; + my_assert( (GC_word)self->i == (GC_word)data );} + static void Test() { + my_assert( nFreed >= .8 * nAllocated );} + + int i; + static int nFreed; + static int nAllocated;}; + +int D::nFreed = 0; +int D::nAllocated = 0; + + +class E: public GC_NS_QUALIFY(gc_cleanup) { public: + /* A collectible class with clean-up for use by F. */ + + E() { + nAllocated++;} + ~E() { + nFreed++;} + + static int nFreed; + static int nAllocated;}; + +int E::nFreed = 0; +int E::nAllocated = 0; + + +class F: public E {public: + /* A collectible class with clean-up, a base with clean-up, and a + member with clean-up. */ + + F() { + nAllocatedF++; + } + + ~F() { + nFreedF++; + } + + static void Test() { + my_assert(nFreedF >= .8 * nAllocatedF); + my_assert(2 * nFreedF == nFreed); + } + + E e; + static int nFreedF; + static int nAllocatedF; +}; + +int F::nFreedF = 0; +int F::nAllocatedF = 0; + + +GC_word Disguise( void* p ) { + return ~ (GC_word) p;} + +void* Undisguise( GC_word i ) { + return (void*) ~ i;} + +#if ((defined(MSWIN32) && !defined(__MINGW32__)) || defined(MSWINCE)) \ + && !defined(NO_WINMAIN_ENTRY) + int APIENTRY WinMain( HINSTANCE /* instance */, HINSTANCE /* prev */, + LPSTR cmd, int /* cmdShow */) + { + int argc = 0; + char* argv[ 3 ]; + +# if defined(CPPCHECK) + GC_noop1((GC_word)&WinMain); +# endif + if (cmd != 0) + for (argc = 1; argc < (int)(sizeof(argv) / sizeof(argv[0])); argc++) { + // Parse the command-line string. Non-reentrant strtok() is not used + // to avoid complains of static analysis tools. (And, strtok_r() is + // not available on some platforms.) The code is equivalent to: + // if (!(argv[argc] = strtok(argc == 1 ? cmd : 0, " \t"))) break; + if (NULL == cmd) { + argv[argc] = NULL; + break; + } + argv[argc] = cmd; + for (; *cmd != '\0'; cmd++) { + if (*cmd != ' ' && *cmd != '\t') + break; + } + if ('\0' == *cmd) { + argv[argc] = NULL; + break; + } + argv[argc] = cmd; + while (*(++cmd) != '\0') { + if (*cmd == ' ' || *cmd == '\t') + break; + } + if (*cmd != '\0') { + *(cmd++) = '\0'; + } else { + cmd = NULL; + } + } +#elif defined(MACOS) + int main() { + char* argv_[] = {"test_cpp", "10"}; // MacOS doesn't have a command line + argv = argv_; + argc = sizeof(argv_)/sizeof(argv_[0]); +#else + int main( int argc, char* argv[] ) { +#endif + + GC_set_all_interior_pointers(1); + /* needed due to C++ multiple inheritance used */ + + GC_INIT(); + + int i, iters, n; +# ifndef DONT_USE_STD_ALLOCATOR + int *x = gc_allocator().allocate(1); + int *xio; + xio = gc_allocator_ignore_off_page().allocate(1); + (void)xio; + int **xptr = traceable_allocator().allocate(1); +# else + int *x = (int *)gc_alloc::allocate(sizeof(int)); +# endif + *x = 29; +# ifndef DONT_USE_STD_ALLOCATOR + if (!xptr) { + fprintf(stderr, "Out of memory!\n"); + exit(3); + } + *xptr = x; + x = 0; +# endif + if (argc != 2 + || (n = (int)COVERT_DATAFLOW(atoi(argv[1]))) <= 0) { + GC_printf("usage: test_cpp number-of-iterations\n" + "Assuming 10 iters\n"); + n = 10; + } + + for (iters = 1; iters <= n; iters++) { + GC_printf( "Starting iteration %d\n", iters ); + + /* Allocate some uncollectible As and disguise their pointers. + Later we'll check to see if the objects are still there. We're + checking to make sure these objects really are uncollectible. */ + GC_word as[ 1000 ]; + GC_word bs[ 1000 ]; + for (i = 0; i < 1000; i++) { + as[ i ] = Disguise( new (GC_NS_QUALIFY(NoGC)) A(i) ); + bs[ i ] = Disguise( new (GC_NS_QUALIFY(NoGC)) B(i) ); } + + /* Allocate a fair number of finalizable Cs, Ds, and Fs. + Later we'll check to make sure they've gone away. */ + for (i = 0; i < 1000; i++) { + C* c = new C( 2 ); + C c1( 2 ); /* stack allocation should work too */ + D* d; + F* f; + d = ::new (USE_GC, D::CleanUp, (void*)(GC_word)i) D( i ); + (void)d; + f = new F; + F** fa = new F*[1]; + fa[0] = f; + (void)fa; + delete[] fa; + if (0 == i % 10) delete c;} + + /* Allocate a very large number of collectible As and Bs and + drop the references to them immediately, forcing many + collections. */ + for (i = 0; i < 1000000; i++) { + A* a; + a = new (USE_GC) A( i ); + (void)a; + B* b; + b = new B( i ); + (void)b; + b = new (USE_GC) B( i ); + if (0 == i % 10) { + B::Deleting( 1 ); + delete b; + B::Deleting( 0 );} +# ifdef FINALIZE_ON_DEMAND + GC_invoke_finalizers(); +# endif + } + + /* Make sure the uncollectible As and Bs are still there. */ + for (i = 0; i < 1000; i++) { + A* a = static_cast(Undisguise(as[i])); + B* b = static_cast(Undisguise(bs[i])); + a->Test( i ); +# if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) + // Workaround for ASan/MSan: the linker uses operator delete + // implementation from libclang_rt instead of gc_cpp (thus + // causing incompatible alloc/free). + GC_FREE(a); +# else + delete a; +# endif + b->Test( i ); + B::Deleting( 1 ); + delete b; + B::Deleting( 0 ); +# ifdef FINALIZE_ON_DEMAND + GC_invoke_finalizers(); +# endif + } + + /* Make sure most of the finalizable Cs, Ds, and Fs have + gone away. */ + C::Test(); + D::Test(); + F::Test();} + +# ifndef DONT_USE_STD_ALLOCATOR + x = *xptr; +# endif + my_assert (29 == x[0]); + GC_printf( "The test appears to have succeeded.\n" ); + return( 0 ); +} diff --git a/tests/tests.am b/tests/tests.am new file mode 100644 index 0000000..66f69b8 --- /dev/null +++ b/tests/tests.am @@ -0,0 +1,123 @@ +# +# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED +# OR IMPLIED. ANY USE IS AT YOUR OWN RISK. +# +# Permission is hereby granted to use or copy this program +# for any purpose, provided the above notices are retained on all copies. +# Permission to modify the code and to distribute modified code is granted, +# provided the above notices are retained, and a notice that the code was +# modified is included with the above copyright notice. + +# Common libs to _LDADD for all tests. +test_ldadd = $(top_builddir)/libgc.la $(EXTRA_TEST_LIBS) + +TESTS += gctest$(EXEEXT) +check_PROGRAMS += gctest +gctest_SOURCES = tests/test.c +gctest_LDADD = $(test_ldadd) +if THREADS +gctest_LDADD += $(THREADDLLIBS) +endif +gctest_DEPENDENCIES = $(top_builddir)/libgc.la + +TESTS += leaktest$(EXEEXT) +check_PROGRAMS += leaktest +leaktest_SOURCES = tests/leak_test.c +leaktest_LDADD = $(test_ldadd) + +TESTS += middletest$(EXEEXT) +check_PROGRAMS += middletest +middletest_SOURCES = tests/middle.c +middletest_LDADD = $(test_ldadd) + +TESTS += smashtest$(EXEEXT) +check_PROGRAMS += smashtest +smashtest_SOURCES = tests/smash_test.c +smashtest_LDADD = $(test_ldadd) + +TESTS += hugetest$(EXEEXT) +check_PROGRAMS += hugetest +hugetest_SOURCES = tests/huge_test.c +hugetest_LDADD = $(test_ldadd) + +TESTS += realloc_test$(EXEEXT) +check_PROGRAMS += realloc_test +realloc_test_SOURCES = tests/realloc_test.c +realloc_test_LDADD = $(test_ldadd) + +TESTS += staticrootstest$(EXEEXT) +check_PROGRAMS += staticrootstest +staticrootstest_SOURCES = tests/staticrootstest.c +staticrootstest_CFLAGS = -DSTATICROOTSLIB2 +staticrootstest_LDADD = $(test_ldadd) libstaticrootslib_test.la \ + libstaticrootslib2_test.la +check_LTLIBRARIES += libstaticrootslib_test.la libstaticrootslib2_test.la +libstaticrootslib_test_la_SOURCES = tests/staticrootslib.c +libstaticrootslib_test_la_LIBADD = $(test_ldadd) +libstaticrootslib_test_la_LDFLAGS = -version-info 1:3:0 -no-undefined \ + -rpath /nowhere +libstaticrootslib_test_la_DEPENDENCIES = $(top_builddir)/libgc.la +libstaticrootslib2_test_la_SOURCES = tests/staticrootslib.c +libstaticrootslib2_test_la_LIBADD = $(test_ldadd) +libstaticrootslib2_test_la_CFLAGS = -DSTATICROOTSLIB2 +libstaticrootslib2_test_la_LDFLAGS = -version-info 1:3:0 -no-undefined \ + -rpath /nowhere + +if KEEP_BACK_PTRS +TESTS += tracetest$(EXEEXT) +check_PROGRAMS += tracetest +tracetest_SOURCES = tests/trace_test.c +tracetest_LDADD = $(test_ldadd) +endif + +if THREADS + +TESTS += threadleaktest$(EXEEXT) +check_PROGRAMS += threadleaktest +threadleaktest_SOURCES = tests/thread_leak_test.c +threadleaktest_LDADD = $(test_ldadd) $(THREADDLLIBS) + +TESTS += threadkey_test$(EXEEXT) +check_PROGRAMS += threadkey_test +threadkey_test_SOURCES = tests/threadkey_test.c +threadkey_test_LDADD = $(test_ldadd) $(THREADDLLIBS) + +TESTS += subthreadcreate_test$(EXEEXT) +check_PROGRAMS += subthreadcreate_test +subthreadcreate_test_SOURCES = tests/subthread_create.c +subthreadcreate_test_LDADD = $(test_ldadd) $(THREADDLLIBS) + +TESTS += initsecondarythread_test$(EXEEXT) +check_PROGRAMS += initsecondarythread_test +initsecondarythread_test_SOURCES = tests/initsecondarythread.c +initsecondarythread_test_LDADD = $(test_ldadd) $(THREADDLLIBS) + +endif + +if CPLUSPLUS +TESTS += test_cpp$(EXEEXT) +check_PROGRAMS += test_cpp +test_cpp_SOURCES = tests/test_cpp.cc +if AVOID_CPP_LIB +test_cpp_LDADD = gc_cpp.o $(test_ldadd) $(CXXLIBS) +else +test_cpp_LDADD = libgccpp.la $(test_ldadd) $(CXXLIBS) +endif +endif + +if ENABLE_DISCLAIM + +TESTS += disclaim_test$(EXEEXT) +check_PROGRAMS += disclaim_test +disclaim_test_SOURCES = tests/disclaim_test.c +disclaim_test_LDADD = $(test_ldadd) +if THREADS +disclaim_test_LDADD += $(THREADDLLIBS) +endif + +TESTS += disclaim_bench$(EXEEXT) +check_PROGRAMS += disclaim_bench +disclaim_bench_SOURCES = tests/disclaim_bench.c +disclaim_bench_LDADD = $(test_ldadd) + +endif diff --git a/tests/thread_leak_test.c b/tests/thread_leak_test.c new file mode 100644 index 0000000..6cb7ab3 --- /dev/null +++ b/tests/thread_leak_test.c @@ -0,0 +1,95 @@ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#ifndef GC_THREADS +# define GC_THREADS +#endif + +#undef GC_NO_THREAD_REDIRECTS +#include "leak_detector.h" + +#ifdef GC_PTHREADS +# include +#else +# include +#endif + +#include + +#ifdef GC_PTHREADS + void * test(void * arg) +#else + DWORD WINAPI test(LPVOID arg) +#endif +{ + int *p[10]; + int i; + for (i = 0; i < 10; ++i) { + p[i] = malloc(sizeof(int)+i); + } + CHECK_LEAKS(); + for (i = 1; i < 10; ++i) { + free(p[i]); + } +# ifdef GC_PTHREADS + return arg; +# else + return (DWORD)(GC_word)arg; +# endif +} + +#ifndef NTHREADS +# define NTHREADS 5 +#endif + +int main(void) { +# if NTHREADS > 0 + int i; +# ifdef GC_PTHREADS + pthread_t t[NTHREADS]; +# else + HANDLE t[NTHREADS]; + DWORD thread_id; +# endif + int code; +# endif + + GC_set_find_leak(1); /* for new collect versions not compiled */ + /* with -DFIND_LEAK. */ + GC_INIT(); + +# if NTHREADS > 0 + for (i = 0; i < NTHREADS; ++i) { +# ifdef GC_PTHREADS + code = pthread_create(t + i, 0, test, 0); +# else + t[i] = CreateThread(NULL, 0, test, 0, 0, &thread_id); + code = t[i] != NULL ? 0 : (int)GetLastError(); +# endif + if (code != 0) { + fprintf(stderr, "Thread creation failed %d\n", code); + exit(2); + } + } + + for (i = 0; i < NTHREADS; ++i) { +# ifdef GC_PTHREADS + code = pthread_join(t[i], 0); +# else + code = WaitForSingleObject(t[i], INFINITE) == WAIT_OBJECT_0 ? 0 : + (int)GetLastError(); +# endif + if (code != 0) { + fprintf(stderr, "Thread join failed %d\n", code); + exit(2); + } + } +# endif + + CHECK_LEAKS(); + CHECK_LEAKS(); + CHECK_LEAKS(); + return 0; +} diff --git a/tests/threadkey_test.c b/tests/threadkey_test.c new file mode 100644 index 0000000..b08a0a9 --- /dev/null +++ b/tests/threadkey_test.c @@ -0,0 +1,115 @@ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#ifndef GC_THREADS +# define GC_THREADS +#endif + +#define GC_NO_THREAD_REDIRECTS 1 + +#include "gc.h" + +#include +#include + +#if (!defined(GC_PTHREADS) || defined(GC_SOLARIS_THREADS) \ + || defined(__native_client__)) && !defined(SKIP_THREADKEY_TEST) + /* FIXME: Skip this test on Solaris for now. The test may fail on */ + /* other targets as well. Currently, tested only on Linux, Cygwin */ + /* and Darwin. */ +# define SKIP_THREADKEY_TEST +#endif + +#ifdef SKIP_THREADKEY_TEST + +int main (void) +{ + printf("threadkey_test skipped\n"); + return 0; +} + +#else + +#include + +pthread_key_t key; + +#ifdef GC_SOLARIS_THREADS + /* pthread_once_t key_once = { PTHREAD_ONCE_INIT }; */ +#else + pthread_once_t key_once = PTHREAD_ONCE_INIT; +#endif + +void * entry (void *arg) +{ + pthread_setspecific(key, + (void *)GC_HIDE_POINTER(GC_STRDUP("hello, world"))); + return arg; +} + +void * GC_CALLBACK on_thread_exit_inner (struct GC_stack_base * sb, void * arg) +{ + int res = GC_register_my_thread (sb); + pthread_t t; + int creation_res; /* Used to suppress a warning about */ + /* unchecked pthread_create() result. */ + pthread_attr_t attr; + + if (pthread_attr_init(&attr) != 0 + || pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0) { + fprintf(stderr, "Thread attribute init or setdetachstate failed\n"); + exit(2); + } + creation_res = GC_pthread_create(&t, &attr, entry, NULL); + (void)pthread_attr_destroy(&attr); + if (res == GC_SUCCESS) + GC_unregister_my_thread (); + + return arg ? (void*)(GC_word)creation_res : 0; +} + +void on_thread_exit (void *v) +{ + GC_call_with_stack_base (on_thread_exit_inner, v); +} + +void make_key (void) +{ + pthread_key_create (&key, on_thread_exit); +} + +#ifndef LIMIT +# define LIMIT 30 +#endif + +int main (void) +{ + int i; + GC_INIT (); + +# ifdef GC_SOLARIS_THREADS + pthread_key_create (&key, on_thread_exit); +# else + pthread_once (&key_once, make_key); +# endif + for (i = 0; i < LIMIT; i++) { + pthread_t t; + + if (GC_pthread_create(&t, NULL, entry, NULL) == 0) { + void *res; + int code = (i & 1) != 0 ? GC_pthread_join(t, &res) + : GC_pthread_detach(t); + + if (code != 0) { + fprintf(stderr, "Thread %s failed %d\n", + (i & 1) != 0 ? "join" : "detach", code); + exit(2); + } + } + } + return 0; +} + +#endif /* !SKIP_THREADKEY_TEST */ diff --git a/tests/trace_test.c b/tests/trace_test.c new file mode 100644 index 0000000..79c353f --- /dev/null +++ b/tests/trace_test.c @@ -0,0 +1,41 @@ +#include +#include + +#ifndef GC_DEBUG +# define GC_DEBUG +#endif + +#include "gc.h" +#include "gc_backptr.h" + +struct treenode { + struct treenode *x; + struct treenode *y; +} * root[10]; + +struct treenode * mktree(int i) { + struct treenode * r = GC_MALLOC(sizeof(struct treenode)); + if (0 == i) return 0; + if (1 == i) r = GC_MALLOC_ATOMIC(sizeof(struct treenode)); + if (r == NULL) { + fprintf(stderr, "Out of memory\n"); + exit(1); + } + r -> x = mktree(i-1); + r -> y = mktree(i-1); + return r; +} + +int main(void) +{ + int i; + GC_INIT(); + for (i = 0; i < 10; ++i) { + root[i] = mktree(12); + } + GC_generate_random_backtrace(); + GC_generate_random_backtrace(); + GC_generate_random_backtrace(); + GC_generate_random_backtrace(); + return 0; +} diff --git a/thread_local_alloc.c b/thread_local_alloc.c new file mode 100644 index 0000000..25568b4 --- /dev/null +++ b/thread_local_alloc.c @@ -0,0 +1,306 @@ +/* + * Copyright (c) 2000-2005 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +#if defined(THREAD_LOCAL_ALLOC) + +#ifndef THREADS +# error "invalid config - THREAD_LOCAL_ALLOC requires GC_THREADS" +#endif + +#include "private/thread_local_alloc.h" + +#include + +#if defined(USE_COMPILER_TLS) + __thread GC_ATTR_TLS_FAST +#elif defined(USE_WIN32_COMPILER_TLS) + __declspec(thread) GC_ATTR_TLS_FAST +#endif +GC_key_t GC_thread_key; + +static GC_bool keys_initialized; + +/* Return a single nonempty freelist fl to the global one pointed to */ +/* by gfl. */ + +static void return_single_freelist(void *fl, void **gfl) +{ + if (*gfl == 0) { + *gfl = fl; + } else { + void *q, **qptr; + + GC_ASSERT(GC_size(fl) == GC_size(*gfl)); + /* Concatenate: */ + qptr = &(obj_link(fl)); + while ((word)(q = *qptr) >= HBLKSIZE) + qptr = &(obj_link(q)); + GC_ASSERT(0 == q); + *qptr = *gfl; + *gfl = fl; + } +} + +/* Recover the contents of the freelist array fl into the global one gfl.*/ +/* We hold the allocator lock. */ +static void return_freelists(void **fl, void **gfl) +{ + int i; + + for (i = 1; i < TINY_FREELISTS; ++i) { + if ((word)(fl[i]) >= HBLKSIZE) { + return_single_freelist(fl[i], &gfl[i]); + } + /* Clear fl[i], since the thread structure may hang around. */ + /* Do it in a way that is likely to trap if we access it. */ + fl[i] = (ptr_t)HBLKSIZE; + } + /* The 0 granule freelist really contains 1 granule objects. */ +# ifdef GC_GCJ_SUPPORT + if (fl[0] == ERROR_FL) return; +# endif + if ((word)(fl[0]) >= HBLKSIZE) { + return_single_freelist(fl[0], &gfl[1]); + } +} + +#ifdef USE_PTHREAD_SPECIFIC + /* Re-set the TLS value on thread cleanup to allow thread-local */ + /* allocations to happen in the TLS destructors. */ + /* GC_unregister_my_thread (and similar routines) will finally set */ + /* the GC_thread_key to NULL preventing this destructor from being */ + /* called repeatedly. */ + static void reset_thread_key(void* v) { + pthread_setspecific(GC_thread_key, v); + } +#else +# define reset_thread_key 0 +#endif + +/* Each thread structure must be initialized. */ +/* This call must be made from the new thread. */ +GC_INNER void GC_init_thread_local(GC_tlfs p) +{ + int i, j, res; + + GC_ASSERT(I_HOLD_LOCK()); + if (!EXPECT(keys_initialized, TRUE)) { + GC_ASSERT((word)&GC_thread_key % sizeof(word) == 0); + res = GC_key_create(&GC_thread_key, reset_thread_key); + if (COVERT_DATAFLOW(res) != 0) { + ABORT("Failed to create key for local allocator"); + } + keys_initialized = TRUE; + } + res = GC_setspecific(GC_thread_key, p); + if (COVERT_DATAFLOW(res) != 0) { + ABORT("Failed to set thread specific allocation pointers"); + } + for (j = 0; j < TINY_FREELISTS; ++j) { + for (i = 0; i < THREAD_FREELISTS_KINDS; ++i) { + p -> _freelists[i][j] = (void *)(word)1; + } +# ifdef GC_GCJ_SUPPORT + p -> gcj_freelists[j] = (void *)(word)1; +# endif + } + /* The size 0 free lists are handled like the regular free lists, */ + /* to ensure that the explicit deallocation works. However, */ + /* allocation of a size 0 "gcj" object is always an error. */ +# ifdef GC_GCJ_SUPPORT + p -> gcj_freelists[0] = ERROR_FL; +# endif +} + +/* We hold the allocator lock. */ +GC_INNER void GC_destroy_thread_local(GC_tlfs p) +{ + int k; + + /* We currently only do this from the thread itself. */ + GC_STATIC_ASSERT(THREAD_FREELISTS_KINDS <= MAXOBJKINDS); + for (k = 0; k < THREAD_FREELISTS_KINDS; ++k) { + if (k == (int)GC_n_kinds) + break; /* kind is not created */ + return_freelists(p -> _freelists[k], GC_obj_kinds[k].ok_freelist); + } +# ifdef GC_GCJ_SUPPORT + return_freelists(p -> gcj_freelists, (void **)GC_gcjobjfreelist); +# endif +} + +#ifdef GC_ASSERTIONS + /* Defined in pthread_support.c or win32_threads.c. */ + GC_bool GC_is_thread_tsd_valid(void *tsd); +#endif + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_kind(size_t bytes, int knd) +{ + size_t granules; + void *tsd; + void *result; + +# if MAXOBJKINDS > THREAD_FREELISTS_KINDS + if (EXPECT(knd >= THREAD_FREELISTS_KINDS, FALSE)) { + return GC_malloc_kind_global(bytes, knd); + } +# endif +# if !defined(USE_PTHREAD_SPECIFIC) && !defined(USE_WIN32_SPECIFIC) + { + GC_key_t k = GC_thread_key; + + if (EXPECT(0 == k, FALSE)) { + /* We haven't yet run GC_init_parallel. That means */ + /* we also aren't locking, so this is fairly cheap. */ + return GC_malloc_kind_global(bytes, knd); + } + tsd = GC_getspecific(k); + } +# else + if (!EXPECT(keys_initialized, TRUE)) + return GC_malloc_kind_global(bytes, knd); + tsd = GC_getspecific(GC_thread_key); +# endif +# if !defined(USE_COMPILER_TLS) && !defined(USE_WIN32_COMPILER_TLS) + if (EXPECT(0 == tsd, FALSE)) { + return GC_malloc_kind_global(bytes, knd); + } +# endif + GC_ASSERT(GC_is_initialized); + GC_ASSERT(GC_is_thread_tsd_valid(tsd)); + granules = ROUNDED_UP_GRANULES(bytes); + GC_FAST_MALLOC_GRANS(result, granules, + ((GC_tlfs)tsd) -> _freelists[knd], DIRECT_GRANULES, + knd, GC_malloc_kind_global(bytes, knd), + (void)(knd == PTRFREE ? NULL + : (obj_link(result) = 0))); +# ifdef LOG_ALLOCS + GC_log_printf("GC_malloc_kind(%lu, %d) returned %p, recent GC #%lu\n", + (unsigned long)bytes, knd, result, + (unsigned long)GC_gc_no); +# endif + return result; +} + +#ifdef GC_GCJ_SUPPORT + +# include "atomic_ops.h" /* for AO_compiler_barrier() */ + +# include "include/gc_gcj.h" + +/* Gcj-style allocation without locks is extremely tricky. The */ +/* fundamental issue is that we may end up marking a free list, which */ +/* has freelist links instead of "vtable" pointers. That is usually */ +/* OK, since the next object on the free list will be cleared, and */ +/* will thus be interpreted as containing a zero descriptor. That's */ +/* fine if the object has not yet been initialized. But there are */ +/* interesting potential races. */ +/* In the case of incremental collection, this seems hopeless, since */ +/* the marker may run asynchronously, and may pick up the pointer to */ +/* the next freelist entry (which it thinks is a vtable pointer), get */ +/* suspended for a while, and then see an allocated object instead */ +/* of the vtable. This may be avoidable with either a handshake with */ +/* the collector or, probably more easily, by moving the free list */ +/* links to the second word of each object. The latter isn't a */ +/* universal win, since on architecture like Itanium, nonzero offsets */ +/* are not necessarily free. And there may be cache fill order issues. */ +/* For now, we punt with incremental GC. This probably means that */ +/* incremental GC should be enabled before we fork a second thread. */ +/* Unlike the other thread local allocation calls, we assume that the */ +/* collector has been explicitly initialized. */ +GC_API GC_ATTR_MALLOC void * GC_CALL GC_gcj_malloc(size_t bytes, + void * ptr_to_struct_containing_descr) +{ + if (EXPECT(GC_incremental, FALSE)) { + return GC_core_gcj_malloc(bytes, ptr_to_struct_containing_descr); + } else { + size_t granules = ROUNDED_UP_GRANULES(bytes); + void *result; + void **tiny_fl = ((GC_tlfs)GC_getspecific(GC_thread_key)) + -> gcj_freelists; + GC_ASSERT(GC_gcj_malloc_initialized); + GC_FAST_MALLOC_GRANS(result, granules, tiny_fl, DIRECT_GRANULES, + GC_gcj_kind, + GC_core_gcj_malloc(bytes, + ptr_to_struct_containing_descr), + {AO_compiler_barrier(); + *(void **)result = ptr_to_struct_containing_descr;}); + /* This forces the initialization of the "method ptr". */ + /* This is necessary to ensure some very subtle properties */ + /* required if a GC is run in the middle of such an allocation. */ + /* Here we implicitly also assume atomicity for the free list. */ + /* and method pointer assignments. */ + /* We must update the freelist before we store the pointer. */ + /* Otherwise a GC at this point would see a corrupted */ + /* free list. */ + /* A real memory barrier is not needed, since the */ + /* action of stopping this thread will cause prior writes */ + /* to complete. */ + /* We assert that any concurrent marker will stop us. */ + /* Thus it is impossible for a mark procedure to see the */ + /* allocation of the next object, but to see this object */ + /* still containing a free list pointer. Otherwise the */ + /* marker, by misinterpreting the freelist link as a vtable */ + /* pointer, might find a random "mark descriptor" in the next */ + /* object. */ + return result; + } +} + +#endif /* GC_GCJ_SUPPORT */ + +/* The thread support layer must arrange to mark thread-local */ +/* free lists explicitly, since the link field is often */ +/* invisible to the marker. It knows how to find all threads; */ +/* we take care of an individual thread freelist structure. */ +GC_INNER void GC_mark_thread_local_fls_for(GC_tlfs p) +{ + ptr_t q; + int i, j; + + for (j = 0; j < TINY_FREELISTS; ++j) { + for (i = 0; i < THREAD_FREELISTS_KINDS; ++i) { + q = p -> _freelists[i][j]; + if ((word)q > HBLKSIZE) + GC_set_fl_marks(q); + } +# ifdef GC_GCJ_SUPPORT + if (EXPECT(j > 0, TRUE)) { + q = p -> gcj_freelists[j]; + if ((word)q > HBLKSIZE) + GC_set_fl_marks(q); + } +# endif + } +} + +#if defined(GC_ASSERTIONS) + /* Check that all thread-local free-lists in p are completely marked. */ + void GC_check_tls_for(GC_tlfs p) + { + int i, j; + + for (j = 1; j < TINY_FREELISTS; ++j) { + for (i = 0; i < THREAD_FREELISTS_KINDS; ++i) { + GC_check_fl_marks(&p->_freelists[i][j]); + } +# ifdef GC_GCJ_SUPPORT + GC_check_fl_marks(&p->gcj_freelists[j]); +# endif + } + } +#endif /* GC_ASSERTIONS */ + +#endif /* THREAD_LOCAL_ALLOC */ diff --git a/tools/add_gc_prefix.c b/tools/add_gc_prefix.c new file mode 100644 index 0000000..60afa5f --- /dev/null +++ b/tools/add_gc_prefix.c @@ -0,0 +1,13 @@ +# include +# include + +int main(int argc, char ** argv) +{ + int i; + + for (i = 1; i < argc; i++) { + printf("gc-%d.%d.%d/%s ", + GC_VERSION_MAJOR, GC_VERSION_MINOR, GC_VERSION_MICRO, argv[i]); + } + return(0); +} diff --git a/tools/callprocs.sh b/tools/callprocs.sh new file mode 100755 index 0000000..a8793f0 --- /dev/null +++ b/tools/callprocs.sh @@ -0,0 +1,4 @@ +#!/bin/sh +GC_DEBUG=1 +export GC_DEBUG +$* 2>&1 | awk '{print "0x3e=c\""$0"\""};/^\t##PC##=/ {if ($2 != 0) {print $2"?i"}}' | adb $1 | sed "s/^ >/>/" diff --git a/tools/gcname.c b/tools/gcname.c new file mode 100644 index 0000000..b9f3364 --- /dev/null +++ b/tools/gcname.c @@ -0,0 +1,9 @@ +#include +#include + +int main(void) +{ + printf("gc-%d.%d.%d", + GC_VERSION_MAJOR, GC_VERSION_MINOR, GC_VERSION_MICRO); + return 0; +} diff --git a/tools/if_mach.c b/tools/if_mach.c new file mode 100644 index 0000000..18c40e5 --- /dev/null +++ b/tools/if_mach.c @@ -0,0 +1,24 @@ +/* Conditionally execute a command based on machine and OS from gcconfig.h */ + +# include "private/gc_priv.h" +# include +# include +# include + +int main(int argc, char **argv) +{ + if (argc < 4) goto Usage; + if (strcmp(MACH_TYPE, argv[1]) != 0) return(0); + if (strlen(OS_TYPE) > 0 && strlen(argv[2]) > 0 + && strcmp(OS_TYPE, argv[2]) != 0) return(0); + fprintf(stderr, "^^^^Starting command^^^^\n"); + fflush(stdout); + execvp(TRUSTED_STRING(argv[3]), (void *)(argv + 3)); + perror("Couldn't execute"); + +Usage: + fprintf(stderr, "Usage: %s mach_type os_type command\n", argv[0]); + fprintf(stderr, "Currently mach_type = %s, os_type = %s\n", + MACH_TYPE, OS_TYPE); + return(1); +} diff --git a/tools/if_not_there.c b/tools/if_not_there.c new file mode 100644 index 0000000..68946d2 --- /dev/null +++ b/tools/if_not_there.c @@ -0,0 +1,47 @@ +/* Conditionally execute a command based if the file argv[1] doesn't exist */ +/* Except for execvp, we stick to ANSI C. */ + +# include "private/gc_priv.h" +# include +# include +# include +#ifdef __DJGPP__ +#include +#endif /* __DJGPP__ */ + +int main(int argc, char **argv) +{ + FILE * f; +#ifdef __DJGPP__ + DIR * d; +#endif /* __DJGPP__ */ + char *fname; + + if (argc < 3) goto Usage; + + fname = TRUSTED_STRING(argv[1]); + f = fopen(fname, "rb"); + if (f != NULL) { + fclose(f); + return(0); + } + f = fopen(fname, "r"); + if (f != NULL) { + fclose(f); + return(0); + } +#ifdef __DJGPP__ + if ((d = opendir(fname)) != 0) { + closedir(d); + return(0); + } +#endif + printf("^^^^Starting command^^^^\n"); + fflush(stdout); + execvp(TRUSTED_STRING(argv[2]), (void *)(argv + 2)); + exit(1); + +Usage: + fprintf(stderr, "Usage: %s file_name command\n", argv[0]); + return(1); +} diff --git a/tools/setjmp_t.c b/tools/setjmp_t.c new file mode 100644 index 0000000..1850769 --- /dev/null +++ b/tools/setjmp_t.c @@ -0,0 +1,155 @@ +/* + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +/* Check whether setjmp actually saves registers in jmp_buf. */ +/* If it doesn't, the generic mark_regs code won't work. */ +/* Compilers vary as to whether they will put x in a */ +/* (callee-save) register without -O. The code is */ +/* contrived such that any decent compiler should put x in */ +/* a callee-save register with -O. Thus it is */ +/* recommended that this be run optimized. (If the machine */ +/* has no callee-save registers, then the generic code is */ +/* safe, but this will not be noticed by this piece of */ +/* code.) This test appears to be far from perfect. */ +#include +#include +#include +#include "private/gc_priv.h" + +#ifdef OS2 +/* GETPAGESIZE() is set to getpagesize() by default, but that */ +/* doesn't really exist, and the collector doesn't need it. */ +#define INCL_DOSFILEMGR +#define INCL_DOSMISC +#define INCL_DOSERRORS +#include + +int getpagesize(void) +{ + ULONG result[1]; + + if (DosQuerySysInfo(QSV_PAGE_SIZE, QSV_PAGE_SIZE, + (void *)result, sizeof(ULONG)) != NO_ERROR) { + fprintf(stderr, "DosQuerySysInfo failed\n"); + result[0] = 4096; + } + return((int)(result[0])); +} +#elif defined(MSWIN32) || defined(MSWINCE) || defined(CYGWIN32) +# include + int getpagesize(void) + { + SYSTEM_INFO sysinfo; + GetSystemInfo(&sysinfo); + return sysinfo.dwPageSize; + } +#endif + +struct { + char a_a; + char * a_b; +} a; + +word nested_sp(void) +{ +# if defined(__GNUC__) && (__GNUC__ >= 4) + return (word)__builtin_frame_address(0); +# else + volatile word sp; + sp = (word)(&sp); + return sp; +# endif +} + +/* To prevent nested_sp inlining. */ +word (*volatile nested_sp_fn)(void) = nested_sp; + +int g(int x); + +int main(void) +{ + volatile word sp; + unsigned ps = GETPAGESIZE(); + jmp_buf b; + register int x = (int)strlen("a"); /* 1, slightly disguised */ + static volatile int y = 0; + + sp = (word)(&sp); + printf("This appears to be a %s running %s\n", MACH_TYPE, OS_TYPE); + if (nested_sp_fn() < sp) { + printf("Stack appears to grow down, which is the default.\n"); + printf("A good guess for STACKBOTTOM on this machine is 0x%lx.\n", + ((unsigned long)sp + ps) & ~(ps-1)); + } else { + printf("Stack appears to grow up.\n"); + printf("Define STACK_GROWS_UP in gc_private.h\n"); + printf("A good guess for STACKBOTTOM on this machine is 0x%lx.\n", + ((unsigned long)sp + ps) & ~(ps-1)); + } + printf("Note that this may vary between machines of ostensibly\n"); + printf("the same architecture (e.g. Sun 3/50s and 3/80s).\n"); + printf("On many machines the value is not fixed.\n"); + printf("A good guess for ALIGNMENT on this machine is %lu.\n", + (unsigned long)((word)(&(a.a_b)) - (word)(&a))); + + printf("The following is a very dubious test of one root marking" + " strategy.\n"); + printf("Results may not be accurate/useful:\n"); + /* Encourage the compiler to keep x in a callee-save register */ + x = 2*x-1; + printf("\n"); + x = 2*x-1; + setjmp(b); + if (y == 1) { + if (x == 2) { + printf("Setjmp-based generic mark_regs code probably won't work.\n"); + printf("But we rarely try that anymore. If you have getcontect()\n"); + printf("this probably doesn't matter.\n"); + } else if (x == 1) { + printf("Setjmp-based register marking code may work.\n"); + } else { + printf("Very strange setjmp implementation.\n"); + } + } + y++; + x = 2; + if (y == 1) longjmp(b,1); + printf("Some GC internal configuration stuff: \n"); + printf("\tWORDSZ = %lu, ALIGNMENT = %d, GC_GRANULE_BYTES = %d\n", + (unsigned long)WORDSZ, ALIGNMENT, GC_GRANULE_BYTES); + printf("\tUsing one mark "); +# if defined(USE_MARK_BYTES) + printf("byte"); +# else + printf("bit"); +# endif + printf(" per "); +# if defined(MARK_BIT_PER_OBJ) + printf("object.\n"); +# elif defined(MARK_BIT_PER_GRANULE) + printf("granule.\n"); +# endif +# ifdef THREAD_LOCAL_ALLOC + printf("Thread local allocation enabled.\n"); +# endif +# ifdef PARALLEL_MARK + printf("Parallel marking enabled.\n"); +# endif + (void)g(x); + return(0); +} + +int g(int x) +{ + return(x); +} diff --git a/tools/threadlibs.c b/tools/threadlibs.c new file mode 100644 index 0000000..bebca53 --- /dev/null +++ b/tools/threadlibs.c @@ -0,0 +1,82 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2010 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +# include "private/gc_priv.h" + +# include + +int main(void) +{ +# if defined(GC_USE_LD_WRAP) + printf("-Wl,--wrap -Wl,dlopen " + "-Wl,--wrap -Wl,pthread_create -Wl,--wrap -Wl,pthread_join " + "-Wl,--wrap -Wl,pthread_detach -Wl,--wrap -Wl,pthread_sigmask " + "-Wl,--wrap -Wl,pthread_exit -Wl,--wrap -Wl,pthread_cancel\n"); +# endif +# if (defined(GC_LINUX_THREADS) && !defined(PLATFORM_ANDROID)) \ + || defined(GC_IRIX_THREADS) || defined(GC_DARWIN_THREADS) \ + || defined(GC_AIX_THREADS) || defined(GC_GNU_THREADS) +# ifdef GC_USE_DLOPEN_WRAP + printf("-ldl "); +# endif + printf("-lpthread\n"); +# endif +# if defined(GC_OPENBSD_THREADS) + printf("-pthread\n"); +# endif +# if defined(GC_FREEBSD_THREADS) +# ifdef GC_USE_DLOPEN_WRAP + printf("-ldl "); +# endif +# if (__FREEBSD_version < 500000) + printf("-pthread\n"); +# else /* __FREEBSD__ || __DragonFly__ */ + printf("-lpthread\n"); +# endif +# endif +# if defined(GC_NETBSD_THREADS) + printf("-lpthread -lrt\n"); +# endif + +# if defined(GC_HPUX_THREADS) || defined(GC_OSF1_THREADS) + printf("-lpthread -lrt\n"); +# endif +# if defined(GC_SOLARIS_THREADS) + printf("-lthread -lposix4\n"); + /* Is this right for recent versions? */ +# endif +# if defined(GC_WIN32_THREADS) && defined(CYGWIN32) + printf("-lpthread\n"); +# endif +# if defined(GC_WIN32_PTHREADS) +# ifdef PTW32_STATIC_LIB + /* assume suffix s for static version of the win32 pthread library */ + printf("-lpthreadGC2s -lws2_32\n"); +# else + printf("-lpthreadGC2\n"); +# endif +# endif +# if defined(GC_OSF1_THREADS) + printf("-pthread -lrt\n"); /* DOB: must be -pthread, not -lpthread */ +# endif + /* You need GCC 3.0.3 to build this one! */ + /* DG/UX native gcc doesn't know what "-pthread" is */ +# if defined(GC_DGUX386_THREADS) + printf("-ldl -pthread\n"); +# endif + return 0; +} diff --git a/typd_mlc.c b/typd_mlc.c new file mode 100644 index 0000000..a7e814c --- /dev/null +++ b/typd_mlc.c @@ -0,0 +1,704 @@ +/* + * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1999-2000 by Hewlett-Packard Company. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +#include "private/gc_pmark.h" +#include "gc_inline.h" /* for GC_malloc_kind */ + +/* + * Some simple primitives for allocation with explicit type information. + * Simple objects are allocated such that they contain a GC_descr at the + * end (in the last allocated word). This descriptor may be a procedure + * which then examines an extended descriptor passed as its environment. + * + * Arrays are treated as simple objects if they have sufficiently simple + * structure. Otherwise they are allocated from an array kind that supplies + * a special mark procedure. These arrays contain a pointer to a + * complex_descriptor as their last word. + * This is done because the environment field is too small, and the collector + * must trace the complex_descriptor. + * + * Note that descriptors inside objects may appear cleared, if we encounter a + * false reference to an object on a free list. In the GC_descr case, this + * is OK, since a 0 descriptor corresponds to examining no fields. + * In the complex_descriptor case, we explicitly check for that case. + * + * MAJOR PARTS OF THIS CODE HAVE NOT BEEN TESTED AT ALL and are not testable, + * since they are not accessible through the current interface. + */ + +#include "gc_typed.h" + +#define TYPD_EXTRA_BYTES (sizeof(word) - EXTRA_BYTES) + +STATIC int GC_explicit_kind = 0; + /* Object kind for objects with indirect */ + /* (possibly extended) descriptors. */ + +STATIC int GC_array_kind = 0; + /* Object kind for objects with complex */ + /* descriptors and GC_array_mark_proc. */ + +/* Extended descriptors. GC_typed_mark_proc understands these. */ +/* These are used for simple objects that are larger than what */ +/* can be described by a BITMAP_BITS sized bitmap. */ +typedef struct { + word ed_bitmap; /* lsb corresponds to first word. */ + GC_bool ed_continued; /* next entry is continuation. */ +} ext_descr; + +/* Array descriptors. GC_array_mark_proc understands these. */ +/* We may eventually need to add provisions for headers and */ +/* trailers. Hence we provide for tree structured descriptors, */ +/* though we don't really use them currently. */ +typedef union ComplexDescriptor { + struct LeafDescriptor { /* Describes simple array */ + word ld_tag; +# define LEAF_TAG 1 + size_t ld_size; /* bytes per element */ + /* multiple of ALIGNMENT */ + size_t ld_nelements; /* Number of elements. */ + GC_descr ld_descriptor; /* A simple length, bitmap, */ + /* or procedure descriptor. */ + } ld; + struct ComplexArrayDescriptor { + word ad_tag; +# define ARRAY_TAG 2 + size_t ad_nelements; + union ComplexDescriptor * ad_element_descr; + } ad; + struct SequenceDescriptor { + word sd_tag; +# define SEQUENCE_TAG 3 + union ComplexDescriptor * sd_first; + union ComplexDescriptor * sd_second; + } sd; +} complex_descriptor; +#define TAG ad.ad_tag + +STATIC ext_descr * GC_ext_descriptors = NULL; + /* Points to array of extended */ + /* descriptors. */ + +STATIC size_t GC_ed_size = 0; /* Current size of above arrays. */ +#define ED_INITIAL_SIZE 100 + +STATIC size_t GC_avail_descr = 0; /* Next available slot. */ + +STATIC int GC_typed_mark_proc_index = 0; /* Indices of my mark */ +STATIC int GC_array_mark_proc_index = 0; /* procedures. */ + +#if !defined(AO_HAVE_load_acquire) && defined(GC_FORCE_INCLUDE_ATOMIC_OPS) +# include "atomic_ops.h" +#endif + +#ifdef AO_HAVE_load_acquire + STATIC volatile AO_t GC_explicit_typing_initialized = FALSE; +#else + STATIC GC_bool GC_explicit_typing_initialized = FALSE; +#endif + +STATIC void GC_push_typed_structures_proc(void) +{ + GC_PUSH_ALL_SYM(GC_ext_descriptors); +} + +/* Add a multiword bitmap to GC_ext_descriptors arrays. Return */ +/* starting index. */ +/* Returns -1 on failure. */ +/* Caller does not hold allocation lock. */ +STATIC signed_word GC_add_ext_descriptor(const word * bm, word nbits) +{ + size_t nwords = divWORDSZ(nbits + WORDSZ-1); + signed_word result; + size_t i; + word last_part; + size_t extra_bits; + DCL_LOCK_STATE; + + LOCK(); + while (GC_avail_descr + nwords >= GC_ed_size) { + ext_descr * new; + size_t new_size; + word ed_size = GC_ed_size; + + if (ed_size == 0) { + GC_ASSERT((word)&GC_ext_descriptors % sizeof(word) == 0); + GC_push_typed_structures = GC_push_typed_structures_proc; + UNLOCK(); + new_size = ED_INITIAL_SIZE; + } else { + UNLOCK(); + new_size = 2 * ed_size; + if (new_size > MAX_ENV) return(-1); + } + new = (ext_descr *) GC_malloc_atomic(new_size * sizeof(ext_descr)); + if (new == 0) return(-1); + LOCK(); + if (ed_size == GC_ed_size) { + if (GC_avail_descr != 0) { + BCOPY(GC_ext_descriptors, new, + GC_avail_descr * sizeof(ext_descr)); + } + GC_ed_size = new_size; + GC_ext_descriptors = new; + } /* else another thread already resized it in the meantime */ + } + result = GC_avail_descr; + for (i = 0; i < nwords-1; i++) { + GC_ext_descriptors[result + i].ed_bitmap = bm[i]; + GC_ext_descriptors[result + i].ed_continued = TRUE; + } + last_part = bm[i]; + /* Clear irrelevant bits. */ + extra_bits = nwords * WORDSZ - nbits; + last_part <<= extra_bits; + last_part >>= extra_bits; + GC_ext_descriptors[result + i].ed_bitmap = last_part; + GC_ext_descriptors[result + i].ed_continued = FALSE; + GC_avail_descr += nwords; + UNLOCK(); + return(result); +} + +/* Table of bitmap descriptors for n word long all pointer objects. */ +STATIC GC_descr GC_bm_table[WORDSZ/2]; + +/* Return a descriptor for the concatenation of 2 nwords long objects, */ +/* each of which is described by descriptor. */ +/* The result is known to be short enough to fit into a bitmap */ +/* descriptor. */ +/* Descriptor is a GC_DS_LENGTH or GC_DS_BITMAP descriptor. */ +STATIC GC_descr GC_double_descr(GC_descr descriptor, word nwords) +{ + if ((descriptor & GC_DS_TAGS) == GC_DS_LENGTH) { + descriptor = GC_bm_table[BYTES_TO_WORDS((word)descriptor)]; + }; + descriptor |= (descriptor & ~GC_DS_TAGS) >> nwords; + return(descriptor); +} + +STATIC complex_descriptor * +GC_make_sequence_descriptor(complex_descriptor *first, + complex_descriptor *second); + +/* Build a descriptor for an array with nelements elements, */ +/* each of which can be described by a simple descriptor. */ +/* We try to optimize some common cases. */ +/* If the result is COMPLEX, then a complex_descr* is returned */ +/* in *complex_d. */ +/* If the result is LEAF, then we built a LeafDescriptor in */ +/* the structure pointed to by leaf. */ +/* The tag in the leaf structure is not set. */ +/* If the result is SIMPLE, then a GC_descr */ +/* is returned in *simple_d. */ +/* If the result is NO_MEM, then */ +/* we failed to allocate the descriptor. */ +/* The implementation knows that GC_DS_LENGTH is 0. */ +/* *leaf, *complex_d, and *simple_d may be used as temporaries */ +/* during the construction. */ +#define COMPLEX 2 +#define LEAF 1 +#define SIMPLE 0 +#define NO_MEM (-1) +STATIC int GC_make_array_descriptor(size_t nelements, size_t size, + GC_descr descriptor, GC_descr *simple_d, + complex_descriptor **complex_d, + struct LeafDescriptor * leaf) +{ +# define OPT_THRESHOLD 50 + /* For larger arrays, we try to combine descriptors of adjacent */ + /* descriptors to speed up marking, and to reduce the amount */ + /* of space needed on the mark stack. */ + if ((descriptor & GC_DS_TAGS) == GC_DS_LENGTH) { + if (descriptor == (GC_descr)size) { + *simple_d = nelements * descriptor; + return(SIMPLE); + } else if ((word)descriptor == 0) { + *simple_d = (GC_descr)0; + return(SIMPLE); + } + } + if (nelements <= OPT_THRESHOLD) { + if (nelements <= 1) { + if (nelements == 1) { + *simple_d = descriptor; + return(SIMPLE); + } else { + *simple_d = (GC_descr)0; + return(SIMPLE); + } + } + } else if (size <= BITMAP_BITS/2 + && (descriptor & GC_DS_TAGS) != GC_DS_PROC + && (size & (sizeof(word)-1)) == 0) { + int result = + GC_make_array_descriptor(nelements/2, 2*size, + GC_double_descr(descriptor, + BYTES_TO_WORDS(size)), + simple_d, complex_d, leaf); + if ((nelements & 1) == 0) { + return(result); + } else { + struct LeafDescriptor * one_element = + (struct LeafDescriptor *) + GC_malloc_atomic(sizeof(struct LeafDescriptor)); + + if (result == NO_MEM || one_element == 0) return(NO_MEM); + one_element -> ld_tag = LEAF_TAG; + one_element -> ld_size = size; + one_element -> ld_nelements = 1; + one_element -> ld_descriptor = descriptor; + switch(result) { + case SIMPLE: + { + struct LeafDescriptor * beginning = + (struct LeafDescriptor *) + GC_malloc_atomic(sizeof(struct LeafDescriptor)); + if (beginning == 0) return(NO_MEM); + beginning -> ld_tag = LEAF_TAG; + beginning -> ld_size = size; + beginning -> ld_nelements = 1; + beginning -> ld_descriptor = *simple_d; + *complex_d = GC_make_sequence_descriptor( + (complex_descriptor *)beginning, + (complex_descriptor *)one_element); + break; + } + case LEAF: + { + struct LeafDescriptor * beginning = + (struct LeafDescriptor *) + GC_malloc_atomic(sizeof(struct LeafDescriptor)); + if (beginning == 0) return(NO_MEM); + beginning -> ld_tag = LEAF_TAG; + beginning -> ld_size = leaf -> ld_size; + beginning -> ld_nelements = leaf -> ld_nelements; + beginning -> ld_descriptor = leaf -> ld_descriptor; + *complex_d = GC_make_sequence_descriptor( + (complex_descriptor *)beginning, + (complex_descriptor *)one_element); + break; + } + case COMPLEX: + *complex_d = GC_make_sequence_descriptor( + *complex_d, + (complex_descriptor *)one_element); + break; + } + return(COMPLEX); + } + } + + leaf -> ld_size = size; + leaf -> ld_nelements = nelements; + leaf -> ld_descriptor = descriptor; + return(LEAF); +} + +STATIC complex_descriptor * +GC_make_sequence_descriptor(complex_descriptor *first, + complex_descriptor *second) +{ + struct SequenceDescriptor * result = + (struct SequenceDescriptor *) + GC_malloc(sizeof(struct SequenceDescriptor)); + /* Can't result in overly conservative marking, since tags are */ + /* very small integers. Probably faster than maintaining type */ + /* info. */ + if (result != 0) { + result -> sd_tag = SEQUENCE_TAG; + result -> sd_first = first; + result -> sd_second = second; + } + return((complex_descriptor *)result); +} + +STATIC ptr_t * GC_eobjfreelist = NULL; + +STATIC mse * GC_typed_mark_proc(word * addr, mse * mark_stack_ptr, + mse * mark_stack_limit, word env); + +STATIC mse * GC_array_mark_proc(word * addr, mse * mark_stack_ptr, + mse * mark_stack_limit, word env); + +STATIC void GC_init_explicit_typing(void) +{ + unsigned i; + + GC_STATIC_ASSERT(sizeof(struct LeafDescriptor) % sizeof(word) == 0); + /* Set up object kind with simple indirect descriptor. */ + GC_eobjfreelist = (ptr_t *)GC_new_free_list_inner(); + GC_explicit_kind = GC_new_kind_inner( + (void **)GC_eobjfreelist, + (WORDS_TO_BYTES((word)-1) | GC_DS_PER_OBJECT), + TRUE, TRUE); + /* Descriptors are in the last word of the object. */ + GC_typed_mark_proc_index = GC_new_proc_inner(GC_typed_mark_proc); + /* Set up object kind with array descriptor. */ + GC_array_mark_proc_index = GC_new_proc_inner(GC_array_mark_proc); + GC_array_kind = GC_new_kind_inner(GC_new_free_list_inner(), + GC_MAKE_PROC(GC_array_mark_proc_index, 0), + FALSE, TRUE); + GC_bm_table[0] = GC_DS_BITMAP; + for (i = 1; i < WORDSZ/2; i++) { + GC_bm_table[i] = (((word)-1) << (WORDSZ - i)) | GC_DS_BITMAP; + } +} + +STATIC mse * GC_typed_mark_proc(word * addr, mse * mark_stack_ptr, + mse * mark_stack_limit, word env) +{ + word bm = GC_ext_descriptors[env].ed_bitmap; + word * current_p = addr; + word current; + ptr_t greatest_ha = GC_greatest_plausible_heap_addr; + ptr_t least_ha = GC_least_plausible_heap_addr; + DECLARE_HDR_CACHE; + + INIT_HDR_CACHE; + for (; bm != 0; bm >>= 1, current_p++) { + if (bm & 1) { + current = *current_p; + FIXUP_POINTER(current); + if (current >= (word)least_ha && current <= (word)greatest_ha) { + PUSH_CONTENTS((ptr_t)current, mark_stack_ptr, + mark_stack_limit, (ptr_t)current_p); + } + } + } + if (GC_ext_descriptors[env].ed_continued) { + /* Push an entry with the rest of the descriptor back onto the */ + /* stack. Thus we never do too much work at once. Note that */ + /* we also can't overflow the mark stack unless we actually */ + /* mark something. */ + mark_stack_ptr++; + if ((word)mark_stack_ptr >= (word)mark_stack_limit) { + mark_stack_ptr = GC_signal_mark_stack_overflow(mark_stack_ptr); + } + mark_stack_ptr -> mse_start = (ptr_t)(addr + WORDSZ); + mark_stack_ptr -> mse_descr.w = + GC_MAKE_PROC(GC_typed_mark_proc_index, env + 1); + } + return(mark_stack_ptr); +} + +/* Return the size of the object described by d. It would be faster to */ +/* store this directly, or to compute it as part of */ +/* GC_push_complex_descriptor, but hopefully it doesn't matter. */ +STATIC word GC_descr_obj_size(complex_descriptor *d) +{ + switch(d -> TAG) { + case LEAF_TAG: + return(d -> ld.ld_nelements * d -> ld.ld_size); + case ARRAY_TAG: + return(d -> ad.ad_nelements + * GC_descr_obj_size(d -> ad.ad_element_descr)); + case SEQUENCE_TAG: + return(GC_descr_obj_size(d -> sd.sd_first) + + GC_descr_obj_size(d -> sd.sd_second)); + default: + ABORT_RET("Bad complex descriptor"); + return 0; + } +} + +/* Push descriptors for the object at addr with complex descriptor d */ +/* onto the mark stack. Return 0 if the mark stack overflowed. */ +STATIC mse * GC_push_complex_descriptor(word *addr, complex_descriptor *d, + mse *msp, mse *msl) +{ + register ptr_t current = (ptr_t) addr; + register word nelements; + register word sz; + register word i; + + switch(d -> TAG) { + case LEAF_TAG: + { + register GC_descr descr = d -> ld.ld_descriptor; + + nelements = d -> ld.ld_nelements; + if (msl - msp <= (ptrdiff_t)nelements) return(0); + sz = d -> ld.ld_size; + for (i = 0; i < nelements; i++) { + msp++; + msp -> mse_start = current; + msp -> mse_descr.w = descr; + current += sz; + } + return(msp); + } + case ARRAY_TAG: + { + register complex_descriptor *descr = d -> ad.ad_element_descr; + + nelements = d -> ad.ad_nelements; + sz = GC_descr_obj_size(descr); + for (i = 0; i < nelements; i++) { + msp = GC_push_complex_descriptor((word *)current, descr, + msp, msl); + if (msp == 0) return(0); + current += sz; + } + return(msp); + } + case SEQUENCE_TAG: + { + sz = GC_descr_obj_size(d -> sd.sd_first); + msp = GC_push_complex_descriptor((word *)current, d -> sd.sd_first, + msp, msl); + if (msp == 0) return(0); + current += sz; + msp = GC_push_complex_descriptor((word *)current, d -> sd.sd_second, + msp, msl); + return(msp); + } + default: + ABORT_RET("Bad complex descriptor"); + return 0; + } +} + +STATIC mse * GC_array_mark_proc(word * addr, mse * mark_stack_ptr, + mse * mark_stack_limit, + word env GC_ATTR_UNUSED) +{ + hdr * hhdr = HDR(addr); + size_t sz = hhdr -> hb_sz; + size_t nwords = BYTES_TO_WORDS(sz); + complex_descriptor * descr = (complex_descriptor *)(addr[nwords-1]); + mse * orig_mark_stack_ptr = mark_stack_ptr; + mse * new_mark_stack_ptr; + + if (descr == 0) { + /* Found a reference to a free list entry. Ignore it. */ + return(orig_mark_stack_ptr); + } + /* In use counts were already updated when array descriptor was */ + /* pushed. Here we only replace it by subobject descriptors, so */ + /* no update is necessary. */ + new_mark_stack_ptr = GC_push_complex_descriptor(addr, descr, + mark_stack_ptr, + mark_stack_limit-1); + if (new_mark_stack_ptr == 0) { + /* Explicitly instruct Clang Static Analyzer that ptr is non-null. */ + if (NULL == mark_stack_ptr) ABORT("Bad mark_stack_ptr"); + + /* Doesn't fit. Conservatively push the whole array as a unit */ + /* and request a mark stack expansion. */ + /* This cannot cause a mark stack overflow, since it replaces */ + /* the original array entry. */ +# ifdef PARALLEL_MARK + /* We might be using a local_mark_stack in parallel mode. */ + if (GC_mark_stack + GC_mark_stack_size == mark_stack_limit) +# endif + { + GC_mark_stack_too_small = TRUE; + } + new_mark_stack_ptr = orig_mark_stack_ptr + 1; + new_mark_stack_ptr -> mse_start = (ptr_t)addr; + new_mark_stack_ptr -> mse_descr.w = sz | GC_DS_LENGTH; + } else { + /* Push descriptor itself */ + new_mark_stack_ptr++; + new_mark_stack_ptr -> mse_start = (ptr_t)(addr + nwords - 1); + new_mark_stack_ptr -> mse_descr.w = sizeof(word) | GC_DS_LENGTH; + } + return new_mark_stack_ptr; +} + +GC_API GC_descr GC_CALL GC_make_descriptor(const GC_word * bm, size_t len) +{ + signed_word last_set_bit = len - 1; + GC_descr result; +# define HIGH_BIT (((word)1) << (WORDSZ - 1)) + DCL_LOCK_STATE; + +# if defined(AO_HAVE_load_acquire) && defined(AO_HAVE_store_release) + if (!EXPECT(AO_load_acquire(&GC_explicit_typing_initialized), TRUE)) { + LOCK(); + if (!GC_explicit_typing_initialized) { + GC_init_explicit_typing(); + AO_store_release(&GC_explicit_typing_initialized, TRUE); + } + UNLOCK(); + } +# else + LOCK(); + if (!EXPECT(GC_explicit_typing_initialized, TRUE)) { + GC_init_explicit_typing(); + GC_explicit_typing_initialized = TRUE; + } + UNLOCK(); +# endif + + while (last_set_bit >= 0 && !GC_get_bit(bm, last_set_bit)) + last_set_bit--; + if (last_set_bit < 0) return(0 /* no pointers */); + +# if ALIGNMENT == CPP_WORDSZ/8 + { + signed_word i; + + for (i = 0; i < last_set_bit; i++) { + if (!GC_get_bit(bm, i)) { + break; + } + } + if (i == last_set_bit) { + /* An initial section contains all pointers. Use length descriptor. */ + return (WORDS_TO_BYTES(last_set_bit+1) | GC_DS_LENGTH); + } + } +# endif + if ((word)last_set_bit < BITMAP_BITS) { + signed_word i; + + /* Hopefully the common case. */ + /* Build bitmap descriptor (with bits reversed) */ + result = HIGH_BIT; + for (i = last_set_bit - 1; i >= 0; i--) { + result >>= 1; + if (GC_get_bit(bm, i)) result |= HIGH_BIT; + } + result |= GC_DS_BITMAP; + } else { + signed_word index = GC_add_ext_descriptor(bm, (word)last_set_bit + 1); + if (index == -1) return(WORDS_TO_BYTES(last_set_bit+1) | GC_DS_LENGTH); + /* Out of memory: use conservative */ + /* approximation. */ + result = GC_MAKE_PROC(GC_typed_mark_proc_index, (word)index); + } + return result; +} + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_malloc_explicitly_typed(size_t lb, + GC_descr d) +{ + word *op; + size_t lg; + + GC_ASSERT(GC_explicit_typing_initialized); + lb = SIZET_SAT_ADD(lb, TYPD_EXTRA_BYTES); + op = GC_malloc_kind(lb, GC_explicit_kind); + if (EXPECT(NULL == op, FALSE)) + return NULL; + /* It is not safe to use GC_size_map[lb] to compute lg here as the */ + /* the former might be updated asynchronously. */ + lg = BYTES_TO_GRANULES(GC_size(op)); + op[GRANULES_TO_WORDS(lg) - 1] = d; + return op; +} + +GC_API GC_ATTR_MALLOC void * GC_CALL + GC_malloc_explicitly_typed_ignore_off_page(size_t lb, GC_descr d) +{ + ptr_t op; + size_t lg; + DCL_LOCK_STATE; + + GC_ASSERT(GC_explicit_typing_initialized); + lb = SIZET_SAT_ADD(lb, TYPD_EXTRA_BYTES); + if (SMALL_OBJ(lb)) { + GC_DBG_COLLECT_AT_MALLOC(lb); + lg = GC_size_map[lb]; + LOCK(); + op = GC_eobjfreelist[lg]; + if (EXPECT(0 == op, FALSE)) { + UNLOCK(); + op = (ptr_t)GENERAL_MALLOC_IOP(lb, GC_explicit_kind); + if (0 == op) return 0; + /* See the comment in GC_malloc_explicitly_typed. */ + lg = BYTES_TO_GRANULES(GC_size(op)); + } else { + GC_eobjfreelist[lg] = obj_link(op); + obj_link(op) = 0; + GC_bytes_allocd += GRANULES_TO_BYTES((word)lg); + UNLOCK(); + } + ((word *)op)[GRANULES_TO_WORDS(lg) - 1] = d; + } else { + op = (ptr_t)GENERAL_MALLOC_IOP(lb, GC_explicit_kind); + if (op != NULL) { + lg = BYTES_TO_GRANULES(GC_size(op)); + ((word *)op)[GRANULES_TO_WORDS(lg) - 1] = d; + } + } + return((void *) op); +} + +GC_API GC_ATTR_MALLOC void * GC_CALL GC_calloc_explicitly_typed(size_t n, + size_t lb, GC_descr d) +{ + word *op; + size_t lg; + GC_descr simple_descr; + complex_descriptor *complex_descr; + int descr_type; + struct LeafDescriptor leaf; + + GC_ASSERT(GC_explicit_typing_initialized); + descr_type = GC_make_array_descriptor((word)n, (word)lb, d, &simple_descr, + &complex_descr, &leaf); + if ((lb | n) > GC_SQRT_SIZE_MAX /* fast initial check */ + && lb > 0 && n > GC_SIZE_MAX / lb) + return (*GC_get_oom_fn())(GC_SIZE_MAX); /* n*lb overflow */ + lb *= n; + switch(descr_type) { + case NO_MEM: return(0); + case SIMPLE: + return GC_malloc_explicitly_typed(lb, simple_descr); + case LEAF: + lb = SIZET_SAT_ADD(lb, + sizeof(struct LeafDescriptor) + TYPD_EXTRA_BYTES); + break; + case COMPLEX: + lb = SIZET_SAT_ADD(lb, TYPD_EXTRA_BYTES); + break; + } + op = GC_malloc_kind(lb, GC_array_kind); + if (EXPECT(NULL == op, FALSE)) + return NULL; + lg = BYTES_TO_GRANULES(GC_size(op)); + if (descr_type == LEAF) { + /* Set up the descriptor inside the object itself. */ + volatile struct LeafDescriptor * lp = + (struct LeafDescriptor *) + (op + GRANULES_TO_WORDS(lg) + - (BYTES_TO_WORDS(sizeof(struct LeafDescriptor)) + 1)); + + lp -> ld_tag = LEAF_TAG; + lp -> ld_size = leaf.ld_size; + lp -> ld_nelements = leaf.ld_nelements; + lp -> ld_descriptor = leaf.ld_descriptor; + ((volatile word *)op)[GRANULES_TO_WORDS(lg) - 1] = (word)lp; + } else { +# ifndef GC_NO_FINALIZATION + size_t lw = GRANULES_TO_WORDS(lg); + + op[lw - 1] = (word)complex_descr; + /* Make sure the descriptor is cleared once there is any danger */ + /* it may have been collected. */ + if (EXPECT(GC_general_register_disappearing_link( + (void **)(op + lw - 1), op) + == GC_NO_MEMORY, FALSE)) +# endif + { + /* Couldn't register it due to lack of memory. Punt. */ + return (*GC_get_oom_fn())(lb); + } + } + return op; +} diff --git a/win32_threads.c b/win32_threads.c new file mode 100644 index 0000000..58fa133 --- /dev/null +++ b/win32_threads.c @@ -0,0 +1,2923 @@ +/* + * Copyright (c) 1994 by Xerox Corporation. All rights reserved. + * Copyright (c) 1996 by Silicon Graphics. All rights reserved. + * Copyright (c) 1998 by Fergus Henderson. All rights reserved. + * Copyright (c) 2000-2008 by Hewlett-Packard Development Company. + * All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ + +#include "private/gc_priv.h" + +#if defined(GC_WIN32_THREADS) + +#ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN 1 +#endif +#define NOSERVICE +#include + +#ifdef THREAD_LOCAL_ALLOC +# include "private/thread_local_alloc.h" +#endif /* THREAD_LOCAL_ALLOC */ + +/* Allocation lock declarations. */ +#if !defined(USE_PTHREAD_LOCKS) + GC_INNER CRITICAL_SECTION GC_allocate_ml; +# ifdef GC_ASSERTIONS + GC_INNER DWORD GC_lock_holder = NO_THREAD; + /* Thread id for current holder of allocation lock */ +# endif +#else + GC_INNER pthread_mutex_t GC_allocate_ml = PTHREAD_MUTEX_INITIALIZER; +# ifdef GC_ASSERTIONS + GC_INNER unsigned long GC_lock_holder = NO_THREAD; +# endif +#endif + +#undef CreateThread +#undef ExitThread +#undef _beginthreadex +#undef _endthreadex + +#ifdef GC_PTHREADS +# include /* for EAGAIN */ + + /* Cygwin-specific forward decls */ +# undef pthread_create +# undef pthread_join +# undef pthread_detach + +# ifndef GC_NO_PTHREAD_SIGMASK +# undef pthread_sigmask +# endif + + STATIC void * GC_pthread_start(void * arg); + STATIC void GC_thread_exit_proc(void *arg); + +# include +# ifdef CAN_CALL_ATFORK +# include +# endif + +#elif !defined(MSWINCE) +# include /* For _beginthreadex, _endthreadex */ +# include /* for errno, EAGAIN */ + +#endif /* !GC_PTHREADS && !MSWINCE */ + +/* DllMain-based thread registration is currently incompatible */ +/* with thread-local allocation, pthreads and WinCE. */ +#if (defined(GC_DLL) || defined(GC_INSIDE_DLL)) \ + && !defined(GC_NO_THREADS_DISCOVERY) && !defined(MSWINCE) \ + && !defined(THREAD_LOCAL_ALLOC) && !defined(GC_PTHREADS) +# include "atomic_ops.h" + + /* This code operates in two distinct modes, depending on */ + /* the setting of GC_win32_dll_threads. */ + /* If GC_win32_dll_threads is set, all threads in the process */ + /* are implicitly registered with the GC by DllMain. */ + /* No explicit registration is required, and attempts at */ + /* explicit registration are ignored. This mode is */ + /* very different from the Posix operation of the collector. */ + /* In this mode access to the thread table is lock-free. */ + /* Hence there is a static limit on the number of threads. */ + +# ifdef GC_DISCOVER_TASK_THREADS + /* GC_DISCOVER_TASK_THREADS should be used if DllMain-based */ + /* thread registration is required but it is impossible to */ + /* call GC_use_threads_discovery before other GC routines. */ +# define GC_win32_dll_threads TRUE +# else + STATIC GC_bool GC_win32_dll_threads = FALSE; + /* GC_win32_dll_threads must be set (if needed) at the */ + /* application initialization time, i.e. before any */ + /* collector or thread calls. We make it a "dynamic" */ + /* option only to avoid multiple library versions. */ +# endif + +#else + /* If GC_win32_dll_threads is FALSE (or the collector is */ + /* built without GC_DLL defined), things operate in a way */ + /* that is very similar to Posix platforms, and new threads */ + /* must be registered with the collector, e.g. by using */ + /* preprocessor-based interception of the thread primitives. */ + /* In this case, we use a real data structure for the thread */ + /* table. Note that there is no equivalent of linker-based */ + /* call interception, since we don't have ELF-like */ + /* facilities. The Windows analog appears to be "API */ + /* hooking", which really seems to be a standard way to */ + /* do minor binary rewriting (?). I'd prefer not to have */ + /* the basic collector rely on such facilities, but an */ + /* optional package that intercepts thread calls this way */ + /* would probably be nice. */ +# ifndef GC_NO_THREADS_DISCOVERY +# define GC_NO_THREADS_DISCOVERY +# endif +# define GC_win32_dll_threads FALSE +# undef MAX_THREADS +# define MAX_THREADS 1 /* dll_thread_table[] is always empty. */ +#endif /* GC_NO_THREADS_DISCOVERY */ + +/* We have two versions of the thread table. Which one */ +/* we us depends on whether or not GC_win32_dll_threads */ +/* is set. Note that before initialization, we don't */ +/* add any entries to either table, even if DllMain is */ +/* called. The main thread will be added on */ +/* initialization. */ + +/* The type of the first argument to InterlockedExchange. */ +/* Documented to be LONG volatile *, but at least gcc likes */ +/* this better. */ +typedef LONG * IE_t; + +STATIC GC_bool GC_thr_initialized = FALSE; + +#ifndef GC_ALWAYS_MULTITHREADED + GC_INNER GC_bool GC_need_to_lock = FALSE; +#endif + +static GC_bool parallel_initialized = FALSE; + +/* GC_use_threads_discovery() is currently incompatible with pthreads */ +/* and WinCE. It might be possible to get DllMain-based thread */ +/* registration to work with Cygwin, but if you try it then you are on */ +/* your own. */ +GC_API void GC_CALL GC_use_threads_discovery(void) +{ +# ifdef GC_NO_THREADS_DISCOVERY + ABORT("GC DllMain-based thread registration unsupported"); +# else + /* Turn on GC_win32_dll_threads. */ + GC_ASSERT(!parallel_initialized); + /* Note that GC_use_threads_discovery is expected to be called by */ + /* the client application (not from DllMain) at start-up. */ +# ifndef GC_DISCOVER_TASK_THREADS + GC_win32_dll_threads = TRUE; +# endif + GC_init_parallel(); +# endif +} + +STATIC DWORD GC_main_thread = 0; + +#define ADDR_LIMIT ((ptr_t)(word)-1) + +struct GC_Thread_Rep { + union { +# ifndef GC_NO_THREADS_DISCOVERY + volatile AO_t in_use; + /* Updated without lock. */ + /* We assert that unused */ + /* entries have invalid ids of */ + /* zero and zero stack fields. */ + /* Used only with GC_win32_dll_threads. */ +# endif + struct GC_Thread_Rep * next; + /* Hash table link without */ + /* GC_win32_dll_threads. */ + /* More recently allocated threads */ + /* with a given pthread id come */ + /* first. (All but the first are */ + /* guaranteed to be dead, but we may */ + /* not yet have registered the join.) */ + } tm; /* table_management */ + DWORD id; + +# ifdef MSWINCE + /* According to MSDN specs for WinCE targets: */ + /* - DuplicateHandle() is not applicable to thread handles; and */ + /* - the value returned by GetCurrentThreadId() could be used as */ + /* a "real" thread handle (for SuspendThread(), ResumeThread() and */ + /* GetThreadContext()). */ +# define THREAD_HANDLE(t) (HANDLE)(word)(t)->id +# else + HANDLE handle; +# define THREAD_HANDLE(t) (t)->handle +# endif + + ptr_t stack_base; /* The cold end of the stack. */ + /* 0 ==> entry not valid. */ + /* !in_use ==> stack_base == 0 */ + ptr_t last_stack_min; /* Last known minimum (hottest) address */ + /* in stack or ADDR_LIMIT if unset */ +# ifdef IA64 + ptr_t backing_store_end; + ptr_t backing_store_ptr; +# endif + + ptr_t thread_blocked_sp; /* Protected by GC lock. */ + /* NULL value means thread unblocked. */ + /* If set to non-NULL, thread will */ + /* acquire GC lock before doing any */ + /* pointer manipulations. Thus it does */ + /* not need to stop this thread. */ + + struct GC_traced_stack_sect_s *traced_stack_sect; + /* Points to the "stack section" data */ + /* held in stack by the innermost */ + /* GC_call_with_gc_active() of this */ + /* thread. May be NULL. */ + + unsigned short finalizer_skipped; + unsigned char finalizer_nested; + /* Used by GC_check_finalizer_nested() */ + /* to minimize the level of recursion */ + /* when a client finalizer allocates */ + /* memory (initially both are 0). */ + + unsigned char suspended; /* really of GC_bool type */ + +# ifdef GC_PTHREADS + unsigned char flags; /* Protected by GC lock. */ +# define FINISHED 1 /* Thread has exited. */ +# define DETACHED 2 /* Thread is intended to be detached. */ +# define KNOWN_FINISHED(t) (((t) -> flags) & FINISHED) + pthread_t pthread_id; + void *status; /* hold exit value until join in case it's a pointer */ +# else +# define KNOWN_FINISHED(t) 0 +# endif + +# ifdef THREAD_LOCAL_ALLOC + struct thread_local_freelists tlfs; +# endif +}; + +typedef struct GC_Thread_Rep * GC_thread; +typedef volatile struct GC_Thread_Rep * GC_vthread; + +#ifndef GC_NO_THREADS_DISCOVERY + /* We assumed that volatile ==> memory ordering, at least among */ + /* volatiles. This code should consistently use atomic_ops. */ + STATIC volatile GC_bool GC_please_stop = FALSE; +#elif defined(GC_ASSERTIONS) + STATIC GC_bool GC_please_stop = FALSE; +#endif + +/* + * We track thread attachments while the world is supposed to be stopped. + * Unfortunately, we can't stop them from starting, since blocking in + * DllMain seems to cause the world to deadlock. Thus we have to recover + * If we notice this in the middle of marking. + */ + +#ifndef GC_NO_THREADS_DISCOVERY + STATIC volatile AO_t GC_attached_thread = FALSE; +#endif + +#if defined(WRAP_MARK_SOME) && !defined(GC_PTHREADS) + /* Return TRUE if an thread was attached since we last asked or */ + /* since GC_attached_thread was explicitly reset. */ + GC_INNER GC_bool GC_started_thread_while_stopped(void) + { +# ifndef GC_NO_THREADS_DISCOVERY + if (GC_win32_dll_threads) { +# ifdef AO_HAVE_compare_and_swap_release + if (AO_compare_and_swap_release(&GC_attached_thread, TRUE, + FALSE /* stored */)) + return TRUE; +# else + AO_nop_full(); /* Prior heap reads need to complete earlier. */ + if (AO_load(&GC_attached_thread)) { + AO_store(&GC_attached_thread, FALSE); + return TRUE; + } +# endif + } +# endif + return FALSE; + } +#endif /* WRAP_MARK_SOME */ + +/* Thread table used if GC_win32_dll_threads is set. */ +/* This is a fixed size array. */ +/* Since we use runtime conditionals, both versions */ +/* are always defined. */ +# ifndef MAX_THREADS +# define MAX_THREADS 512 +# endif + +/* Things may get quite slow for large numbers of threads, */ +/* since we look them up with sequential search. */ +volatile struct GC_Thread_Rep dll_thread_table[MAX_THREADS]; + +STATIC volatile LONG GC_max_thread_index = 0; + /* Largest index in dll_thread_table */ + /* that was ever used. */ + +/* And now the version used if GC_win32_dll_threads is not set. */ +/* This is a chained hash table, with much of the code borrowed */ +/* From the Posix implementation. */ +#ifndef THREAD_TABLE_SZ +# define THREAD_TABLE_SZ 256 /* Power of 2 (for speed). */ +#endif +#define THREAD_TABLE_INDEX(id) /* id is of DWORD type */ \ + (int)((((id) >> 8) ^ (id)) % THREAD_TABLE_SZ) +STATIC GC_thread GC_threads[THREAD_TABLE_SZ]; + +/* It may not be safe to allocate when we register the first thread. */ +/* Thus we allocated one statically. It does not contain any field we */ +/* need to push ("next" and "status" fields are unused). */ +static struct GC_Thread_Rep first_thread; +static GC_bool first_thread_used = FALSE; + +/* Add a thread to GC_threads. We assume it wasn't already there. */ +/* Caller holds allocation lock. */ +/* Unlike the pthreads version, the id field is set by the caller. */ +STATIC GC_thread GC_new_thread(DWORD id) +{ + int hv = THREAD_TABLE_INDEX(id); + GC_thread result; + + GC_ASSERT(I_HOLD_LOCK()); + if (!EXPECT(first_thread_used, TRUE)) { + result = &first_thread; + first_thread_used = TRUE; + } else { + GC_ASSERT(!GC_win32_dll_threads); + result = (struct GC_Thread_Rep *) + GC_INTERNAL_MALLOC(sizeof(struct GC_Thread_Rep), NORMAL); + /* result can be NULL */ + if (result == 0) return(0); + } + /* result -> id = id; Done by caller. */ + result -> tm.next = GC_threads[hv]; + GC_threads[hv] = result; +# ifdef GC_PTHREADS + GC_ASSERT(result -> flags == 0); +# endif + GC_ASSERT(result -> thread_blocked_sp == NULL); + return(result); +} + +STATIC GC_bool GC_in_thread_creation = FALSE; + /* Protected by allocation lock. */ + +GC_INLINE void GC_record_stack_base(GC_vthread me, + const struct GC_stack_base *sb) +{ + me -> stack_base = sb -> mem_base; +# ifdef IA64 + me -> backing_store_end = sb -> reg_base; +# endif + if (me -> stack_base == NULL) + ABORT("Bad stack base in GC_register_my_thread"); +} + +/* This may be called from DllMain, and hence operates under unusual */ +/* constraints. In particular, it must be lock-free if */ +/* GC_win32_dll_threads is set. Always called from the thread being */ +/* added. If GC_win32_dll_threads is not set, we already hold the */ +/* allocation lock except possibly during single-threaded startup code. */ +STATIC GC_thread GC_register_my_thread_inner(const struct GC_stack_base *sb, + DWORD thread_id) +{ + GC_vthread me; + + /* The following should be a no-op according to the win32 */ + /* documentation. There is empirical evidence that it */ + /* isn't. - HB */ +# if defined(MPROTECT_VDB) + if (GC_incremental +# ifdef GWW_VDB + && !GC_gww_dirty_init() +# endif + ) + GC_set_write_fault_handler(); +# endif + +# ifndef GC_NO_THREADS_DISCOVERY + if (GC_win32_dll_threads) { + int i; + /* It appears to be unsafe to acquire a lock here, since this */ + /* code is apparently not preemptible on some systems. */ + /* (This is based on complaints, not on Microsoft's official */ + /* documentation, which says this should perform "only simple */ + /* initialization tasks".) */ + /* Hence we make do with nonblocking synchronization. */ + /* It has been claimed that DllMain is really only executed with */ + /* a particular system lock held, and thus careful use of locking */ + /* around code that doesn't call back into the system libraries */ + /* might be OK. But this hasn't been tested across all win32 */ + /* variants. */ + /* cast away volatile qualifier */ + for (i = 0; + InterlockedExchange((void*)&dll_thread_table[i].tm.in_use, 1) != 0; + i++) { + /* Compare-and-swap would make this cleaner, but that's not */ + /* supported before Windows 98 and NT 4.0. In Windows 2000, */ + /* InterlockedExchange is supposed to be replaced by */ + /* InterlockedExchangePointer, but that's not really what I */ + /* want here. */ + /* FIXME: We should eventually declare Win95 dead and use AO_ */ + /* primitives here. */ + if (i == MAX_THREADS - 1) + ABORT("Too many threads"); + } + /* Update GC_max_thread_index if necessary. The following is */ + /* safe, and unlike CompareExchange-based solutions seems to work */ + /* on all Windows95 and later platforms. */ + /* Unfortunately, GC_max_thread_index may be temporarily out of */ + /* bounds, so readers have to compensate. */ + while (i > GC_max_thread_index) { + InterlockedIncrement((IE_t)&GC_max_thread_index); + } + if (GC_max_thread_index >= MAX_THREADS) { + /* We overshot due to simultaneous increments. */ + /* Setting it to MAX_THREADS-1 is always safe. */ + GC_max_thread_index = MAX_THREADS - 1; + } + me = dll_thread_table + i; + } else +# endif + /* else */ /* Not using DllMain */ { + GC_ASSERT(I_HOLD_LOCK()); + GC_in_thread_creation = TRUE; /* OK to collect from unknown thread. */ + me = GC_new_thread(thread_id); + GC_in_thread_creation = FALSE; + if (me == 0) + ABORT("Failed to allocate memory for thread registering"); + } +# ifdef GC_PTHREADS + /* me can be NULL -> segfault */ + me -> pthread_id = pthread_self(); +# endif +# ifndef MSWINCE + /* GetCurrentThread() returns a pseudohandle (a const value). */ + if (!DuplicateHandle(GetCurrentProcess(), GetCurrentThread(), + GetCurrentProcess(), + (HANDLE*)&(me -> handle), + 0 /* dwDesiredAccess */, FALSE /* bInheritHandle */, + DUPLICATE_SAME_ACCESS)) { + ABORT_ARG1("DuplicateHandle failed", + ": errcode= 0x%X", (unsigned)GetLastError()); + } +# endif + me -> last_stack_min = ADDR_LIMIT; + GC_record_stack_base(me, sb); + /* Up until this point, GC_push_all_stacks considers this thread */ + /* invalid. */ + /* Up until this point, this entry is viewed as reserved but invalid */ + /* by GC_delete_thread. */ + me -> id = thread_id; +# if defined(THREAD_LOCAL_ALLOC) + GC_init_thread_local((GC_tlfs)(&(me->tlfs))); +# endif +# ifndef GC_NO_THREADS_DISCOVERY + if (GC_win32_dll_threads) { + if (GC_please_stop) { + AO_store(&GC_attached_thread, TRUE); + AO_nop_full(); /* Later updates must become visible after this. */ + } + /* We'd like to wait here, but can't, since waiting in DllMain */ + /* provokes deadlocks. */ + /* Thus we force marking to be restarted instead. */ + } else +# endif + /* else */ { + GC_ASSERT(!GC_please_stop); + /* Otherwise both we and the thread stopping code would be */ + /* holding the allocation lock. */ + } + return (GC_thread)(me); +} + +/* + * GC_max_thread_index may temporarily be larger than MAX_THREADS. + * To avoid subscript errors, we check on access. + */ +GC_INLINE LONG GC_get_max_thread_index(void) +{ + LONG my_max = GC_max_thread_index; + if (my_max >= MAX_THREADS) return MAX_THREADS - 1; + return my_max; +} + +/* Return the GC_thread corresponding to a thread id. May be called */ +/* without a lock, but should be called in contexts in which the */ +/* requested thread cannot be asynchronously deleted, e.g. from the */ +/* thread itself. */ +/* This version assumes that either GC_win32_dll_threads is set, or */ +/* we hold the allocator lock. */ +/* Also used (for assertion checking only) from thread_local_alloc.c. */ +STATIC GC_thread GC_lookup_thread_inner(DWORD thread_id) +{ +# ifndef GC_NO_THREADS_DISCOVERY + if (GC_win32_dll_threads) { + int i; + LONG my_max = GC_get_max_thread_index(); + for (i = 0; i <= my_max && + (!AO_load_acquire(&dll_thread_table[i].tm.in_use) + || dll_thread_table[i].id != thread_id); + /* Must still be in_use, since nobody else can store our */ + /* thread_id. */ + i++) { + /* empty */ + } + return i <= my_max ? (GC_thread)(dll_thread_table + i) : NULL; + } else +# endif + /* else */ { + GC_thread p = GC_threads[THREAD_TABLE_INDEX(thread_id)]; + + GC_ASSERT(I_HOLD_LOCK()); + while (p != 0 && p -> id != thread_id) p = p -> tm.next; + return(p); + } +} + +#ifdef LINT2 +# define CHECK_LOOKUP_MY_THREAD(me) \ + if (!(me)) ABORT("GC_lookup_thread_inner(GetCurrentThreadId) failed") +#else +# define CHECK_LOOKUP_MY_THREAD(me) /* empty */ +#endif + +/* Called by GC_finalize() (in case of an allocation failure observed). */ +/* GC_reset_finalizer_nested() is the same as in pthread_support.c. */ +GC_INNER void GC_reset_finalizer_nested(void) +{ + GC_thread me = GC_lookup_thread_inner(GetCurrentThreadId()); + CHECK_LOOKUP_MY_THREAD(me); + me->finalizer_nested = 0; +} + +/* Checks and updates the thread-local level of finalizers recursion. */ +/* Returns NULL if GC_invoke_finalizers() should not be called by the */ +/* collector (to minimize the risk of a deep finalizers recursion), */ +/* otherwise returns a pointer to the thread-local finalizer_nested. */ +/* Called by GC_notify_or_invoke_finalizers() only (the lock is held). */ +/* GC_check_finalizer_nested() is the same as in pthread_support.c. */ +GC_INNER unsigned char *GC_check_finalizer_nested(void) +{ + GC_thread me = GC_lookup_thread_inner(GetCurrentThreadId()); + unsigned nesting_level; + CHECK_LOOKUP_MY_THREAD(me); + nesting_level = me->finalizer_nested; + if (nesting_level) { + /* We are inside another GC_invoke_finalizers(). */ + /* Skip some implicitly-called GC_invoke_finalizers() */ + /* depending on the nesting (recursion) level. */ + if (++me->finalizer_skipped < (1U << nesting_level)) return NULL; + me->finalizer_skipped = 0; + } + me->finalizer_nested = (unsigned char)(nesting_level + 1); + return &me->finalizer_nested; +} + +#if defined(GC_ASSERTIONS) && defined(THREAD_LOCAL_ALLOC) + /* This is called from thread-local GC_malloc(). */ + GC_bool GC_is_thread_tsd_valid(void *tsd) + { + GC_thread me; + DCL_LOCK_STATE; + + LOCK(); + me = GC_lookup_thread_inner(GetCurrentThreadId()); + UNLOCK(); + return (word)tsd >= (word)(&me->tlfs) + && (word)tsd < (word)(&me->tlfs) + sizeof(me->tlfs); + } +#endif /* GC_ASSERTIONS && THREAD_LOCAL_ALLOC */ + +GC_API int GC_CALL GC_thread_is_registered(void) +{ + DWORD thread_id = GetCurrentThreadId(); + GC_thread me; + DCL_LOCK_STATE; + + LOCK(); + me = GC_lookup_thread_inner(thread_id); + UNLOCK(); + return me != NULL; +} + +GC_API void GC_CALL GC_register_altstack(void *stack GC_ATTR_UNUSED, + GC_word stack_size GC_ATTR_UNUSED, + void *altstack GC_ATTR_UNUSED, + GC_word altstack_size GC_ATTR_UNUSED) +{ + /* TODO: Implement */ +} + +/* Make sure thread descriptor t is not protected by the VDB */ +/* implementation. */ +/* Used to prevent write faults when the world is (partially) stopped, */ +/* since it may have been stopped with a system lock held, and that */ +/* lock may be required for fault handling. */ +#if defined(MPROTECT_VDB) +# define UNPROTECT_THREAD(t) \ + if (!GC_win32_dll_threads && GC_incremental && t != &first_thread) { \ + GC_ASSERT(SMALL_OBJ(GC_size(t))); \ + GC_remove_protection(HBLKPTR(t), 1, FALSE); \ + } else (void)0 +#else +# define UNPROTECT_THREAD(t) (void)0 +#endif + +#ifdef CYGWIN32 +# define GC_PTHREAD_PTRVAL(pthread_id) pthread_id +#elif defined(GC_WIN32_PTHREADS) || defined(GC_PTHREADS_PARAMARK) +# include /* to check for winpthreads */ +# if defined(__WINPTHREADS_VERSION_MAJOR) +# define GC_PTHREAD_PTRVAL(pthread_id) pthread_id +# else +# define GC_PTHREAD_PTRVAL(pthread_id) pthread_id.p +# endif +#endif + +/* If a thread has been joined, but we have not yet */ +/* been notified, then there may be more than one thread */ +/* in the table with the same win32 id. */ +/* This is OK, but we need a way to delete a specific one. */ +/* Assumes we hold the allocation lock unless */ +/* GC_win32_dll_threads is set. Does not actually free */ +/* GC_thread entry (only unlinks it). */ +/* If GC_win32_dll_threads is set it should be called from the */ +/* thread being deleted. */ +STATIC void GC_delete_gc_thread_no_free(GC_vthread t) +{ +# ifndef MSWINCE + CloseHandle(t->handle); +# endif +# ifndef GC_NO_THREADS_DISCOVERY + if (GC_win32_dll_threads) { + /* This is intended to be lock-free. */ + /* It is either called synchronously from the thread being */ + /* deleted, or by the joining thread. */ + /* In this branch asynchronous changes to (*t) are possible. */ + /* It's not allowed to call GC_printf (and the friends) here, */ + /* see GC_stop_world() for the information. */ + t -> stack_base = 0; + t -> id = 0; + AO_store_release(&t->tm.in_use, FALSE); + } else +# endif + /* else */ { + DWORD id = ((GC_thread)t) -> id; + /* Cast away volatile qualifier, since we have lock. */ + int hv = THREAD_TABLE_INDEX(id); + register GC_thread p = GC_threads[hv]; + register GC_thread prev = 0; + + GC_ASSERT(I_HOLD_LOCK()); + while (p != (GC_thread)t) { + prev = p; + p = p -> tm.next; + } + if (prev == 0) { + GC_threads[hv] = p -> tm.next; + } else { + prev -> tm.next = p -> tm.next; + } + } +} + +/* Delete a thread from GC_threads. We assume it is there. */ +/* (The code intentionally traps if it wasn't.) Assumes we */ +/* hold the allocation lock unless GC_win32_dll_threads is set. */ +/* If GC_win32_dll_threads is set then it should be called from */ +/* the thread being deleted. It is also safe to delete the */ +/* main thread (unless GC_win32_dll_threads). */ +STATIC void GC_delete_thread(DWORD id) +{ + if (GC_win32_dll_threads) { + GC_vthread t = GC_lookup_thread_inner(id); + + if (0 == t) { + WARN("Removing nonexistent thread, id = %" WARN_PRIdPTR "\n", id); + } else { + GC_delete_gc_thread_no_free(t); + } + } else { + int hv = THREAD_TABLE_INDEX(id); + register GC_thread p = GC_threads[hv]; + register GC_thread prev = 0; + + GC_ASSERT(I_HOLD_LOCK()); + while (p -> id != id) { + prev = p; + p = p -> tm.next; + } +# ifndef MSWINCE + CloseHandle(p->handle); +# endif + if (prev == 0) { + GC_threads[hv] = p -> tm.next; + } else { + prev -> tm.next = p -> tm.next; + } + if (p != &first_thread) { + GC_INTERNAL_FREE(p); + } + } +} + +GC_API void GC_CALL GC_allow_register_threads(void) +{ + /* Check GC is initialized and the current thread is registered. */ + GC_ASSERT(GC_lookup_thread_inner(GetCurrentThreadId()) != 0); +# if !defined(GC_ALWAYS_MULTITHREADED) && !defined(PARALLEL_MARK) \ + && !defined(GC_NO_THREADS_DISCOVERY) + /* GC_init() does not call GC_init_parallel() in this case. */ + parallel_initialized = TRUE; +# endif + set_need_to_lock(); +} + +GC_API int GC_CALL GC_register_my_thread(const struct GC_stack_base *sb) +{ + GC_thread me; + DWORD thread_id = GetCurrentThreadId(); + DCL_LOCK_STATE; + + if (GC_need_to_lock == FALSE) + ABORT("Threads explicit registering is not previously enabled"); + + /* We lock here, since we want to wait for an ongoing GC. */ + LOCK(); + me = GC_lookup_thread_inner(thread_id); + if (me == 0) { +# ifdef GC_PTHREADS + me = GC_register_my_thread_inner(sb, thread_id); + me -> flags |= DETACHED; + /* Treat as detached, since we do not need to worry about */ + /* pointer results. */ +# else + GC_register_my_thread_inner(sb, thread_id); +# endif + UNLOCK(); + return GC_SUCCESS; + } else +# ifdef GC_PTHREADS + /* else */ if ((me -> flags & FINISHED) != 0) { + GC_record_stack_base(me, sb); + me -> flags &= ~FINISHED; /* but not DETACHED */ +# ifdef THREAD_LOCAL_ALLOC + GC_init_thread_local((GC_tlfs)(&me->tlfs)); +# endif + UNLOCK(); + return GC_SUCCESS; + } else +# endif + /* else */ { + UNLOCK(); + return GC_DUPLICATE; + } +} + +/* Similar to that in pthread_support.c. */ +STATIC void GC_wait_for_gc_completion(GC_bool wait_for_all) +{ + GC_ASSERT(I_HOLD_LOCK()); + if (GC_incremental && GC_collection_in_progress()) { + word old_gc_no = GC_gc_no; + + /* Make sure that no part of our stack is still on the mark stack, */ + /* since it's about to be unmapped. */ + do { + ENTER_GC(); + GC_in_thread_creation = TRUE; + GC_collect_a_little_inner(1); + GC_in_thread_creation = FALSE; + EXIT_GC(); + + UNLOCK(); + Sleep(0); /* yield */ + LOCK(); + } while (GC_incremental && GC_collection_in_progress() + && (wait_for_all || old_gc_no == GC_gc_no)); + } +} + +GC_API int GC_CALL GC_unregister_my_thread(void) +{ + DCL_LOCK_STATE; + +# ifdef DEBUG_THREADS + GC_log_printf("Unregistering thread 0x%lx\n", (long)GetCurrentThreadId()); +# endif + + if (GC_win32_dll_threads) { +# if defined(THREAD_LOCAL_ALLOC) + /* Can't happen: see GC_use_threads_discovery(). */ + GC_ASSERT(FALSE); +# else + /* FIXME: Should we just ignore this? */ + GC_delete_thread(GetCurrentThreadId()); +# endif + } else { +# if defined(THREAD_LOCAL_ALLOC) || defined(GC_PTHREADS) + GC_thread me; +# endif + DWORD thread_id = GetCurrentThreadId(); + + LOCK(); + GC_wait_for_gc_completion(FALSE); +# if defined(THREAD_LOCAL_ALLOC) || defined(GC_PTHREADS) + me = GC_lookup_thread_inner(thread_id); + CHECK_LOOKUP_MY_THREAD(me); + GC_ASSERT(!KNOWN_FINISHED(me)); +# endif +# if defined(THREAD_LOCAL_ALLOC) + GC_ASSERT(GC_getspecific(GC_thread_key) == &me->tlfs); + GC_destroy_thread_local(&(me->tlfs)); +# endif +# ifdef GC_PTHREADS + if ((me -> flags & DETACHED) == 0) { + me -> flags |= FINISHED; + } else +# endif + /* else */ { + GC_delete_thread(thread_id); + } +# if defined(THREAD_LOCAL_ALLOC) + /* It is required to call remove_specific defined in specific.c. */ + GC_remove_specific(GC_thread_key); +# endif + UNLOCK(); + } + return GC_SUCCESS; +} + +/* Wrapper for functions that are likely to block for an appreciable */ +/* length of time. */ + +/* GC_do_blocking_inner() is nearly the same as in pthread_support.c */ +GC_INNER void GC_do_blocking_inner(ptr_t data, void * context GC_ATTR_UNUSED) +{ + struct blocking_data * d = (struct blocking_data *) data; + DWORD thread_id = GetCurrentThreadId(); + GC_thread me; +# ifdef IA64 + ptr_t stack_ptr = GC_save_regs_in_stack(); +# endif + DCL_LOCK_STATE; + + LOCK(); + me = GC_lookup_thread_inner(thread_id); + CHECK_LOOKUP_MY_THREAD(me); + GC_ASSERT(me -> thread_blocked_sp == NULL); +# ifdef IA64 + me -> backing_store_ptr = stack_ptr; +# endif + me -> thread_blocked_sp = (ptr_t) &d; /* save approx. sp */ + /* Save context here if we want to support precise stack marking */ + UNLOCK(); + d -> client_data = (d -> fn)(d -> client_data); + LOCK(); /* This will block if the world is stopped. */ +# if defined(CPPCHECK) + GC_noop1((word)me->thread_blocked_sp); +# endif + me -> thread_blocked_sp = NULL; + UNLOCK(); +} + +/* GC_call_with_gc_active() has the opposite to GC_do_blocking() */ +/* functionality. It might be called from a user function invoked by */ +/* GC_do_blocking() to temporarily back allow calling any GC function */ +/* and/or manipulating pointers to the garbage collected heap. */ +GC_API void * GC_CALL GC_call_with_gc_active(GC_fn_type fn, + void * client_data) +{ + struct GC_traced_stack_sect_s stacksect; + DWORD thread_id = GetCurrentThreadId(); + GC_thread me; + DCL_LOCK_STATE; + + LOCK(); /* This will block if the world is stopped. */ + me = GC_lookup_thread_inner(thread_id); + CHECK_LOOKUP_MY_THREAD(me); + /* Adjust our stack base value (this could happen unless */ + /* GC_get_stack_base() was used which returned GC_SUCCESS). */ + GC_ASSERT(me -> stack_base != NULL); + if ((word)me->stack_base < (word)(&stacksect)) + me -> stack_base = (ptr_t)(&stacksect); + + if (me -> thread_blocked_sp == NULL) { + /* We are not inside GC_do_blocking() - do nothing more. */ + UNLOCK(); + client_data = fn(client_data); + /* Prevent treating the above as a tail call. */ + GC_noop1((word)(&stacksect)); + return client_data; /* result */ + } + + /* Setup new "stack section". */ + stacksect.saved_stack_ptr = me -> thread_blocked_sp; +# ifdef IA64 + /* This is the same as in GC_call_with_stack_base(). */ + stacksect.backing_store_end = GC_save_regs_in_stack(); + /* Unnecessarily flushes register stack, */ + /* but that probably doesn't hurt. */ + stacksect.saved_backing_store_ptr = me -> backing_store_ptr; +# endif + stacksect.prev = me -> traced_stack_sect; + me -> thread_blocked_sp = NULL; + me -> traced_stack_sect = &stacksect; + + UNLOCK(); + client_data = fn(client_data); + GC_ASSERT(me -> thread_blocked_sp == NULL); + GC_ASSERT(me -> traced_stack_sect == &stacksect); + + /* Restore original "stack section". */ + LOCK(); +# if defined(CPPCHECK) + GC_noop1((word)me->traced_stack_sect); +# endif + me -> traced_stack_sect = stacksect.prev; +# ifdef IA64 + me -> backing_store_ptr = stacksect.saved_backing_store_ptr; +# endif + me -> thread_blocked_sp = stacksect.saved_stack_ptr; + UNLOCK(); + + return client_data; /* result */ +} + +#ifdef GC_PTHREADS + + /* A quick-and-dirty cache of the mapping between pthread_t */ + /* and win32 thread id. */ +# define PTHREAD_MAP_SIZE 512 + DWORD GC_pthread_map_cache[PTHREAD_MAP_SIZE] = {0}; +# define PTHREAD_MAP_INDEX(pthread_id) \ + ((NUMERIC_THREAD_ID(pthread_id) >> 5) % PTHREAD_MAP_SIZE) + /* It appears pthread_t is really a pointer type ... */ +# define SET_PTHREAD_MAP_CACHE(pthread_id, win32_id) \ + (void)(GC_pthread_map_cache[PTHREAD_MAP_INDEX(pthread_id)] = (win32_id)) +# define GET_PTHREAD_MAP_CACHE(pthread_id) \ + GC_pthread_map_cache[PTHREAD_MAP_INDEX(pthread_id)] + + /* Return a GC_thread corresponding to a given pthread_t. */ + /* Returns 0 if it's not there. */ + /* We assume that this is only called for pthread ids that */ + /* have not yet terminated or are still joinable, and */ + /* cannot be concurrently terminated. */ + /* Assumes we do NOT hold the allocation lock. */ + STATIC GC_thread GC_lookup_pthread(pthread_t id) + { +# ifndef GC_NO_THREADS_DISCOVERY + if (GC_win32_dll_threads) { + int i; + LONG my_max = GC_get_max_thread_index(); + + for (i = 0; i <= my_max && + (!AO_load_acquire(&dll_thread_table[i].tm.in_use) + || THREAD_EQUAL(dll_thread_table[i].pthread_id, id)); + /* Must still be in_use, since nobody else can */ + /* store our thread_id. */ + i++) { + /* empty */ + } + return i <= my_max ? (GC_thread)(dll_thread_table + i) : NULL; + } else +# endif + /* else */ { + /* We first try the cache. If that fails, we use a very slow */ + /* approach. */ + DWORD win32_id = GET_PTHREAD_MAP_CACHE(id); + int hv_guess = THREAD_TABLE_INDEX(win32_id); + int hv; + GC_thread p; + DCL_LOCK_STATE; + + LOCK(); + for (p = GC_threads[hv_guess]; 0 != p; p = p -> tm.next) { + if (THREAD_EQUAL(p -> pthread_id, id)) + goto foundit; + } + for (hv = 0; hv < THREAD_TABLE_SZ; ++hv) { + for (p = GC_threads[hv]; 0 != p; p = p -> tm.next) { + if (THREAD_EQUAL(p -> pthread_id, id)) + goto foundit; + } + } + p = 0; + foundit: + UNLOCK(); + return p; + } + } + +#endif /* GC_PTHREADS */ + +#ifdef CAN_HANDLE_FORK + /* Similar to that in pthread_support.c but also rehashes the table */ + /* since hash map key (thread_id) differs from that in the parent. */ + STATIC void GC_remove_all_threads_but_me(void) + { + int hv; + GC_thread p, next, me = NULL; + DWORD thread_id; + pthread_t pthread_id = pthread_self(); /* same as in parent */ + + GC_ASSERT(!GC_win32_dll_threads); + for (hv = 0; hv < THREAD_TABLE_SZ; ++hv) { + for (p = GC_threads[hv]; 0 != p; p = next) { + next = p -> tm.next; + if (THREAD_EQUAL(p -> pthread_id, pthread_id) + && me == NULL) { /* ignore dead threads with the same id */ + me = p; + p -> tm.next = 0; + } else { +# ifdef THREAD_LOCAL_ALLOC + if ((p -> flags & FINISHED) == 0) { + /* Cannot call GC_destroy_thread_local here (see the */ + /* corresponding comment in pthread_support.c). */ + GC_remove_specific_after_fork(GC_thread_key, p -> pthread_id); + } +# endif + if (&first_thread != p) + GC_INTERNAL_FREE(p); + } + } + GC_threads[hv] = NULL; + } + + /* Put "me" back to GC_threads. */ + GC_ASSERT(me != NULL); + thread_id = GetCurrentThreadId(); /* differs from that in parent */ + GC_threads[THREAD_TABLE_INDEX(thread_id)] = me; + + /* Update Win32 thread Id and handle. */ + me -> id = thread_id; +# ifndef MSWINCE + if (!DuplicateHandle(GetCurrentProcess(), GetCurrentThread(), + GetCurrentProcess(), (HANDLE *)&me->handle, + 0 /* dwDesiredAccess */, FALSE /* bInheritHandle */, + DUPLICATE_SAME_ACCESS)) + ABORT("DuplicateHandle failed"); +# endif + +# if defined(THREAD_LOCAL_ALLOC) && !defined(USE_CUSTOM_SPECIFIC) + /* For Cygwin, we need to re-assign thread-local pointer to */ + /* 'tlfs' (it is OK to call GC_destroy_thread_local and */ + /* GC_free_internal before this action). */ + if (GC_setspecific(GC_thread_key, &me->tlfs) != 0) + ABORT("GC_setspecific failed (in child)"); +# endif + } + + static void fork_prepare_proc(void) + { + LOCK(); +# ifdef PARALLEL_MARK + if (GC_parallel) + GC_wait_for_reclaim(); +# endif + GC_wait_for_gc_completion(TRUE); +# ifdef PARALLEL_MARK + if (GC_parallel) + GC_acquire_mark_lock(); +# endif + } + + static void fork_parent_proc(void) + { +# ifdef PARALLEL_MARK + if (GC_parallel) + GC_release_mark_lock(); +# endif + UNLOCK(); + } + + static void fork_child_proc(void) + { +# ifdef PARALLEL_MARK + if (GC_parallel) { + GC_release_mark_lock(); + GC_parallel = FALSE; /* or GC_markers_m1 = 0 */ + /* Turn off parallel marking in the child, since we are */ + /* probably just going to exec, and we would have to */ + /* restart mark threads. */ + } +# endif + GC_remove_all_threads_but_me(); + UNLOCK(); + } + + /* Routines for fork handling by client (no-op if pthread_atfork works). */ + GC_API void GC_CALL GC_atfork_prepare(void) + { + if (!EXPECT(GC_is_initialized, TRUE)) GC_init(); + if (GC_handle_fork <= 0) + fork_prepare_proc(); + } + + GC_API void GC_CALL GC_atfork_parent(void) + { + if (GC_handle_fork <= 0) + fork_parent_proc(); + } + + GC_API void GC_CALL GC_atfork_child(void) + { + if (GC_handle_fork <= 0) + fork_child_proc(); + } +#endif /* CAN_HANDLE_FORK */ + +void GC_push_thread_structures(void) +{ + GC_ASSERT(I_HOLD_LOCK()); +# ifndef GC_NO_THREADS_DISCOVERY + if (GC_win32_dll_threads) { + /* Unlike the other threads implementations, the thread table */ + /* here contains no pointers to the collectible heap (note also */ + /* that GC_PTHREADS is incompatible with DllMain-based thread */ + /* registration). Thus we have no private structures we need */ + /* to preserve. */ + } else +# endif + /* else */ { + GC_PUSH_ALL_SYM(GC_threads); + } +# if defined(THREAD_LOCAL_ALLOC) + GC_PUSH_ALL_SYM(GC_thread_key); + /* Just in case we ever use our own TLS implementation. */ +# endif +} + +/* Suspend the given thread, if it's still active. */ +STATIC void GC_suspend(GC_thread t) +{ +# ifndef MSWINCE + /* Apparently the Windows 95 GetOpenFileName call creates */ + /* a thread that does not properly get cleaned up, and */ + /* SuspendThread on its descriptor may provoke a crash. */ + /* This reduces the probability of that event, though it still */ + /* appears there's a race here. */ + DWORD exitCode; +# endif + UNPROTECT_THREAD(t); +# ifndef MSWINCE + if (GetExitCodeThread(t -> handle, &exitCode) && + exitCode != STILL_ACTIVE) { +# ifdef GC_PTHREADS + t -> stack_base = 0; /* prevent stack from being pushed */ +# else + /* this breaks pthread_join on Cygwin, which is guaranteed to */ + /* only see user pthreads */ + GC_ASSERT(GC_win32_dll_threads); + GC_delete_gc_thread_no_free(t); +# endif + return; + } +# endif +# if defined(MPROTECT_VDB) + /* Acquire the spin lock we use to update dirty bits. */ + /* Threads shouldn't get stopped holding it. But we may */ + /* acquire and release it in the UNPROTECT_THREAD call. */ + while (AO_test_and_set_acquire(&GC_fault_handler_lock) == AO_TS_SET) { + /* empty */ + } +# endif + +# ifdef MSWINCE + /* SuspendThread() will fail if thread is running kernel code. */ + while (SuspendThread(THREAD_HANDLE(t)) == (DWORD)-1) + Sleep(10); /* in millis */ +# else + if (SuspendThread(t -> handle) == (DWORD)-1) + ABORT("SuspendThread failed"); +# endif /* !MSWINCE */ + t -> suspended = (unsigned char)TRUE; +# if defined(MPROTECT_VDB) + AO_CLEAR(&GC_fault_handler_lock); +# endif + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_SUSPENDED, THREAD_HANDLE(t)); +} + +#if defined(GC_ASSERTIONS) && !defined(CYGWIN32) + GC_INNER GC_bool GC_write_disabled = FALSE; + /* TRUE only if GC_stop_world() acquired GC_write_cs. */ +#endif + +GC_INNER void GC_stop_world(void) +{ + DWORD thread_id = GetCurrentThreadId(); + + if (!GC_thr_initialized) + ABORT("GC_stop_world() called before GC_thr_init()"); + GC_ASSERT(I_HOLD_LOCK()); + + /* This code is the same as in pthread_stop_world.c */ +# ifdef PARALLEL_MARK + if (GC_parallel) { + GC_acquire_mark_lock(); + GC_ASSERT(GC_fl_builder_count == 0); + /* We should have previously waited for it to become zero. */ + } +# endif /* PARALLEL_MARK */ + +# if !defined(GC_NO_THREADS_DISCOVERY) || defined(GC_ASSERTIONS) + GC_please_stop = TRUE; +# endif +# ifndef CYGWIN32 + GC_ASSERT(!GC_write_disabled); + EnterCriticalSection(&GC_write_cs); + /* It's not allowed to call GC_printf() (and friends) here down to */ + /* LeaveCriticalSection (same applies recursively to GC_suspend, */ + /* GC_delete_gc_thread_no_free, GC_get_max_thread_index, GC_size */ + /* and GC_remove_protection). */ +# ifdef GC_ASSERTIONS + GC_write_disabled = TRUE; +# endif +# endif +# ifndef GC_NO_THREADS_DISCOVERY + if (GC_win32_dll_threads) { + int i; + int my_max; + /* Any threads being created during this loop will end up setting */ + /* GC_attached_thread when they start. This will force marking */ + /* to restart. This is not ideal, but hopefully correct. */ + AO_store(&GC_attached_thread, FALSE); + my_max = (int)GC_get_max_thread_index(); + for (i = 0; i <= my_max; i++) { + GC_vthread t = dll_thread_table + i; + if (t -> stack_base != 0 && t -> thread_blocked_sp == NULL + && t -> id != thread_id) { + GC_suspend((GC_thread)t); + } + } + } else +# endif + /* else */ { + GC_thread t; + int i; + + for (i = 0; i < THREAD_TABLE_SZ; i++) { + for (t = GC_threads[i]; t != 0; t = t -> tm.next) { + if (t -> stack_base != 0 && t -> thread_blocked_sp == NULL + && !KNOWN_FINISHED(t) && t -> id != thread_id) { + GC_suspend(t); + } + } + } + } +# ifndef CYGWIN32 +# ifdef GC_ASSERTIONS + GC_write_disabled = FALSE; +# endif + LeaveCriticalSection(&GC_write_cs); +# endif +# ifdef PARALLEL_MARK + if (GC_parallel) + GC_release_mark_lock(); +# endif +} + +GC_INNER void GC_start_world(void) +{ +# ifdef GC_ASSERTIONS + DWORD thread_id = GetCurrentThreadId(); +# endif + + GC_ASSERT(I_HOLD_LOCK()); + if (GC_win32_dll_threads) { + LONG my_max = GC_get_max_thread_index(); + int i; + + for (i = 0; i <= my_max; i++) { + GC_thread t = (GC_thread)(dll_thread_table + i); + if (t -> suspended) { + GC_ASSERT(t -> stack_base != 0 && t -> id != thread_id); + if (ResumeThread(THREAD_HANDLE(t)) == (DWORD)-1) + ABORT("ResumeThread failed"); + t -> suspended = FALSE; + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_UNSUSPENDED, THREAD_HANDLE(t)); + } + } + } else { + GC_thread t; + int i; + + for (i = 0; i < THREAD_TABLE_SZ; i++) { + for (t = GC_threads[i]; t != 0; t = t -> tm.next) { + if (t -> suspended) { + GC_ASSERT(t -> stack_base != 0 && t -> id != thread_id); + if (ResumeThread(THREAD_HANDLE(t)) == (DWORD)-1) + ABORT("ResumeThread failed"); + UNPROTECT_THREAD(t); + t -> suspended = FALSE; + if (GC_on_thread_event) + GC_on_thread_event(GC_EVENT_THREAD_UNSUSPENDED, THREAD_HANDLE(t)); + } + } + } + } +# if !defined(GC_NO_THREADS_DISCOVERY) || defined(GC_ASSERTIONS) + GC_please_stop = FALSE; +# endif +} + +#ifdef MSWINCE + /* The VirtualQuery calls below won't work properly on some old WinCE */ + /* versions, but since each stack is restricted to an aligned 64 KiB */ + /* region of virtual memory we can just take the next lowest multiple */ + /* of 64 KiB. The result of this macro must not be used as its */ + /* argument later and must not be used as the lower bound for sp */ + /* check (since the stack may be bigger than 64 KiB). */ +# define GC_wince_evaluate_stack_min(s) \ + (ptr_t)(((word)(s) - 1) & ~(word)0xFFFF) +#elif defined(GC_ASSERTIONS) +# define GC_dont_query_stack_min FALSE +#endif + +/* A cache holding the results of the recent VirtualQuery call. */ +/* Protected by the allocation lock. */ +static ptr_t last_address = 0; +static MEMORY_BASIC_INFORMATION last_info; + +/* Probe stack memory region (starting at "s") to find out its */ +/* lowest address (i.e. stack top). */ +/* S must be a mapped address inside the region, NOT the first */ +/* unmapped address. */ +STATIC ptr_t GC_get_stack_min(ptr_t s) +{ + ptr_t bottom; + + GC_ASSERT(I_HOLD_LOCK()); + if (s != last_address) { + VirtualQuery(s, &last_info, sizeof(last_info)); + last_address = s; + } + do { + bottom = last_info.BaseAddress; + VirtualQuery(bottom - 1, &last_info, sizeof(last_info)); + last_address = bottom - 1; + } while ((last_info.Protect & PAGE_READWRITE) + && !(last_info.Protect & PAGE_GUARD)); + return(bottom); +} + +/* Return true if the page at s has protections appropriate */ +/* for a stack page. */ +static GC_bool may_be_in_stack(ptr_t s) +{ + GC_ASSERT(I_HOLD_LOCK()); + if (s != last_address) { + VirtualQuery(s, &last_info, sizeof(last_info)); + last_address = s; + } + return (last_info.Protect & PAGE_READWRITE) + && !(last_info.Protect & PAGE_GUARD); +} + +STATIC word GC_push_stack_for(GC_thread thread, DWORD me) +{ + ptr_t sp, stack_min; + + struct GC_traced_stack_sect_s *traced_stack_sect = + thread -> traced_stack_sect; + if (thread -> id == me) { + GC_ASSERT(thread -> thread_blocked_sp == NULL); + sp = GC_approx_sp(); + } else if ((sp = thread -> thread_blocked_sp) == NULL) { + /* Use saved sp value for blocked threads. */ + /* For unblocked threads call GetThreadContext(). */ + CONTEXT context; + context.ContextFlags = CONTEXT_INTEGER|CONTEXT_CONTROL; + if (!GetThreadContext(THREAD_HANDLE(thread), &context)) + ABORT("GetThreadContext failed"); + + /* Push all registers that might point into the heap. Frame */ + /* pointer registers are included in case client code was */ + /* compiled with the 'omit frame pointer' optimization. */ +# define PUSH1(reg) GC_push_one((word)context.reg) +# define PUSH2(r1,r2) (PUSH1(r1), PUSH1(r2)) +# define PUSH4(r1,r2,r3,r4) (PUSH2(r1,r2), PUSH2(r3,r4)) +# if defined(I386) + PUSH4(Edi,Esi,Ebx,Edx), PUSH2(Ecx,Eax), PUSH1(Ebp); + sp = (ptr_t)context.Esp; +# elif defined(X86_64) + PUSH4(Rax,Rcx,Rdx,Rbx); PUSH2(Rbp, Rsi); PUSH1(Rdi); + PUSH4(R8, R9, R10, R11); PUSH4(R12, R13, R14, R15); + sp = (ptr_t)context.Rsp; +# elif defined(ARM32) + PUSH4(R0,R1,R2,R3),PUSH4(R4,R5,R6,R7),PUSH4(R8,R9,R10,R11); + PUSH1(R12); + sp = (ptr_t)context.Sp; +# elif defined(SHx) + PUSH4(R0,R1,R2,R3), PUSH4(R4,R5,R6,R7), PUSH4(R8,R9,R10,R11); + PUSH2(R12,R13), PUSH1(R14); + sp = (ptr_t)context.R15; +# elif defined(MIPS) + PUSH4(IntAt,IntV0,IntV1,IntA0), PUSH4(IntA1,IntA2,IntA3,IntT0); + PUSH4(IntT1,IntT2,IntT3,IntT4), PUSH4(IntT5,IntT6,IntT7,IntS0); + PUSH4(IntS1,IntS2,IntS3,IntS4), PUSH4(IntS5,IntS6,IntS7,IntT8); + PUSH4(IntT9,IntK0,IntK1,IntS8); + sp = (ptr_t)context.IntSp; +# elif defined(PPC) + PUSH4(Gpr0, Gpr3, Gpr4, Gpr5), PUSH4(Gpr6, Gpr7, Gpr8, Gpr9); + PUSH4(Gpr10,Gpr11,Gpr12,Gpr14), PUSH4(Gpr15,Gpr16,Gpr17,Gpr18); + PUSH4(Gpr19,Gpr20,Gpr21,Gpr22), PUSH4(Gpr23,Gpr24,Gpr25,Gpr26); + PUSH4(Gpr27,Gpr28,Gpr29,Gpr30), PUSH1(Gpr31); + sp = (ptr_t)context.Gpr1; +# elif defined(ALPHA) + PUSH4(IntV0,IntT0,IntT1,IntT2), PUSH4(IntT3,IntT4,IntT5,IntT6); + PUSH4(IntT7,IntS0,IntS1,IntS2), PUSH4(IntS3,IntS4,IntS5,IntFp); + PUSH4(IntA0,IntA1,IntA2,IntA3), PUSH4(IntA4,IntA5,IntT8,IntT9); + PUSH4(IntT10,IntT11,IntT12,IntAt); + sp = (ptr_t)context.IntSp; +# elif !defined(CPPCHECK) +# error "architecture is not supported" +# endif + } /* ! current thread */ + + /* Set stack_min to the lowest address in the thread stack, */ + /* or to an address in the thread stack no larger than sp, */ + /* taking advantage of the old value to avoid slow traversals */ + /* of large stacks. */ + if (thread -> last_stack_min == ADDR_LIMIT) { +# ifdef MSWINCE + if (GC_dont_query_stack_min) { + stack_min = GC_wince_evaluate_stack_min(traced_stack_sect != NULL ? + (ptr_t)traced_stack_sect : thread -> stack_base); + /* Keep last_stack_min value unmodified. */ + } else +# endif + /* else */ { + stack_min = GC_get_stack_min(traced_stack_sect != NULL ? + (ptr_t)traced_stack_sect : thread -> stack_base); + UNPROTECT_THREAD(thread); + thread -> last_stack_min = stack_min; + } + } else { + /* First, adjust the latest known minimum stack address if we */ + /* are inside GC_call_with_gc_active(). */ + if (traced_stack_sect != NULL && + (word)thread->last_stack_min > (word)traced_stack_sect) { + UNPROTECT_THREAD(thread); + thread -> last_stack_min = (ptr_t)traced_stack_sect; + } + + if ((word)sp < (word)thread->stack_base + && (word)sp >= (word)thread->last_stack_min) { + stack_min = sp; + } else { + /* In the current thread it is always safe to use sp value. */ + if (may_be_in_stack(thread -> id == me && + (word)sp < (word)thread->last_stack_min ? + sp : thread -> last_stack_min)) { + stack_min = last_info.BaseAddress; + /* Do not probe rest of the stack if sp is correct. */ + if ((word)sp < (word)stack_min + || (word)sp >= (word)thread->stack_base) + stack_min = GC_get_stack_min(thread -> last_stack_min); + } else { + /* Stack shrunk? Is this possible? */ + stack_min = GC_get_stack_min(thread -> stack_base); + } + UNPROTECT_THREAD(thread); + thread -> last_stack_min = stack_min; + } + } + + GC_ASSERT(GC_dont_query_stack_min + || stack_min == GC_get_stack_min(thread -> stack_base) + || ((word)sp >= (word)stack_min + && (word)stack_min < (word)thread->stack_base + && (word)stack_min + > (word)GC_get_stack_min(thread -> stack_base))); + + if ((word)sp >= (word)stack_min && (word)sp < (word)thread->stack_base) { +# ifdef DEBUG_THREADS + GC_log_printf("Pushing stack for 0x%x from sp %p to %p from 0x%x\n", + (int)thread->id, (void *)sp, (void *)thread->stack_base, + (int)me); +# endif + GC_push_all_stack_sections(sp, thread->stack_base, traced_stack_sect); + } else { + /* If not current thread then it is possible for sp to point to */ + /* the guarded (untouched yet) page just below the current */ + /* stack_min of the thread. */ + if (thread -> id == me || (word)sp >= (word)thread->stack_base + || (word)(sp + GC_page_size) < (word)stack_min) + WARN("Thread stack pointer %p out of range, pushing everything\n", + sp); +# ifdef DEBUG_THREADS + GC_log_printf("Pushing stack for 0x%x from (min) %p to %p from 0x%x\n", + (int)thread->id, (void *)stack_min, + (void *)thread->stack_base, (int)me); +# endif + /* Push everything - ignore "traced stack section" data. */ + GC_push_all_stack(stack_min, thread->stack_base); + } + return thread->stack_base - sp; /* stack grows down */ +} + +GC_INNER void GC_push_all_stacks(void) +{ + DWORD thread_id = GetCurrentThreadId(); + GC_bool found_me = FALSE; +# ifndef SMALL_CONFIG + unsigned nthreads = 0; +# endif + word total_size = 0; +# ifndef GC_NO_THREADS_DISCOVERY + if (GC_win32_dll_threads) { + int i; + LONG my_max = GC_get_max_thread_index(); + + for (i = 0; i <= my_max; i++) { + GC_thread t = (GC_thread)(dll_thread_table + i); + if (t -> tm.in_use && t -> stack_base) { +# ifndef SMALL_CONFIG + ++nthreads; +# endif + total_size += GC_push_stack_for(t, thread_id); + if (t -> id == thread_id) found_me = TRUE; + } + } + } else +# endif + /* else */ { + int i; + for (i = 0; i < THREAD_TABLE_SZ; i++) { + GC_thread t; + for (t = GC_threads[i]; t != 0; t = t -> tm.next) { + if (!KNOWN_FINISHED(t) && t -> stack_base) { +# ifndef SMALL_CONFIG + ++nthreads; +# endif + total_size += GC_push_stack_for(t, thread_id); + if (t -> id == thread_id) found_me = TRUE; + } + } + } + } +# ifndef SMALL_CONFIG + GC_VERBOSE_LOG_PRINTF("Pushed %d thread stacks%s\n", nthreads, + GC_win32_dll_threads ? + " based on DllMain thread tracking" : ""); +# endif + if (!found_me && !GC_in_thread_creation) + ABORT("Collecting from unknown thread"); + GC_total_stacksize = total_size; +} + +#ifdef PARALLEL_MARK + +# ifndef MAX_MARKERS +# define MAX_MARKERS 16 +# endif + + static ptr_t marker_sp[MAX_MARKERS - 1]; /* The cold end of the stack */ + /* for markers. */ +# ifdef IA64 + static ptr_t marker_bsp[MAX_MARKERS - 1]; +# endif + + static ptr_t marker_last_stack_min[MAX_MARKERS - 1]; + /* Last known minimum (hottest) address */ + /* in stack (or ADDR_LIMIT if unset) */ + /* for markers. */ + +#endif /* PARALLEL_MARK */ + +/* Find stack with the lowest address which overlaps the */ +/* interval [start, limit). */ +/* Return stack bounds in *lo and *hi. If no such stack */ +/* is found, both *hi and *lo will be set to an address */ +/* higher than limit. */ +GC_INNER void GC_get_next_stack(char *start, char *limit, + char **lo, char **hi) +{ + int i; + char * current_min = ADDR_LIMIT; /* Least in-range stack base */ + ptr_t *plast_stack_min = NULL; /* Address of last_stack_min */ + /* field for thread corresponding */ + /* to current_min. */ + GC_thread thread = NULL; /* Either NULL or points to the */ + /* thread's hash table entry */ + /* containing *plast_stack_min. */ + + /* First set current_min, ignoring limit. */ + if (GC_win32_dll_threads) { + LONG my_max = GC_get_max_thread_index(); + + for (i = 0; i <= my_max; i++) { + ptr_t s = (ptr_t)(dll_thread_table[i].stack_base); + + if ((word)s > (word)start && (word)s < (word)current_min) { + /* Update address of last_stack_min. */ + plast_stack_min = (ptr_t * /* no volatile */) + &dll_thread_table[i].last_stack_min; + current_min = s; +# if defined(CPPCHECK) + /* To avoid a warning that thread is always null. */ + thread = (GC_thread)&dll_thread_table[i]; +# endif + } + } + } else { + for (i = 0; i < THREAD_TABLE_SZ; i++) { + GC_thread t; + + for (t = GC_threads[i]; t != 0; t = t -> tm.next) { + ptr_t s = t -> stack_base; + + if ((word)s > (word)start && (word)s < (word)current_min) { + /* Update address of last_stack_min. */ + plast_stack_min = &t -> last_stack_min; + thread = t; /* Remember current thread to unprotect. */ + current_min = s; + } + } + } +# ifdef PARALLEL_MARK + for (i = 0; i < GC_markers_m1; ++i) { + ptr_t s = marker_sp[i]; +# ifdef IA64 + /* FIXME: not implemented */ +# endif + if ((word)s > (word)start && (word)s < (word)current_min) { + GC_ASSERT(marker_last_stack_min[i] != NULL); + plast_stack_min = &marker_last_stack_min[i]; + current_min = s; + thread = NULL; /* Not a thread's hash table entry. */ + } + } +# endif + } + + *hi = current_min; + if (current_min == ADDR_LIMIT) { + *lo = ADDR_LIMIT; + return; + } + + GC_ASSERT((word)current_min > (word)start && plast_stack_min != NULL); +# ifdef MSWINCE + if (GC_dont_query_stack_min) { + *lo = GC_wince_evaluate_stack_min(current_min); + /* Keep last_stack_min value unmodified. */ + return; + } +# endif + + if ((word)current_min > (word)limit && !may_be_in_stack(limit)) { + /* Skip the rest since the memory region at limit address is */ + /* not a stack (so the lowest address of the found stack would */ + /* be above the limit value anyway). */ + *lo = ADDR_LIMIT; + return; + } + + /* Get the minimum address of the found stack by probing its memory */ + /* region starting from the recent known minimum (if set). */ + if (*plast_stack_min == ADDR_LIMIT + || !may_be_in_stack(*plast_stack_min)) { + /* Unsafe to start from last_stack_min value. */ + *lo = GC_get_stack_min(current_min); + } else { + /* Use the recent value to optimize search for min address. */ + *lo = GC_get_stack_min(*plast_stack_min); + } + + /* Remember current stack_min value. */ + if (thread != NULL) { + UNPROTECT_THREAD(thread); + } + *plast_stack_min = *lo; +} + +#ifdef PARALLEL_MARK + +# if defined(GC_PTHREADS) && !defined(GC_PTHREADS_PARAMARK) + /* Use pthread-based parallel mark implementation. */ + + /* Workaround a deadlock in winpthreads-3.0b internals (observed */ + /* with MinGW 32/64). */ +# if !defined(__MINGW32__) +# define GC_PTHREADS_PARAMARK +# endif +# endif + +# if !defined(GC_PTHREADS_PARAMARK) + STATIC HANDLE GC_marker_cv[MAX_MARKERS - 1] = {0}; + /* Events with manual reset (one for each */ + /* mark helper). */ + + STATIC DWORD GC_marker_Id[MAX_MARKERS - 1] = {0}; + /* This table is used for mapping helper */ + /* threads ID to mark helper index (linear */ + /* search is used since the mapping contains */ + /* only a few entries). */ +# endif + + /* GC_mark_thread() is the same as in pthread_support.c */ +# ifdef GC_PTHREADS_PARAMARK + STATIC void * GC_mark_thread(void * id) +# elif defined(MSWINCE) + STATIC DWORD WINAPI GC_mark_thread(LPVOID id) +# else + STATIC unsigned __stdcall GC_mark_thread(void * id) +# endif + { + word my_mark_no = 0; + + if ((word)id == (word)-1) return 0; /* to make compiler happy */ + marker_sp[(word)id] = GC_approx_sp(); +# ifdef IA64 + marker_bsp[(word)id] = GC_save_regs_in_stack(); +# endif +# if !defined(GC_PTHREADS_PARAMARK) + GC_marker_Id[(word)id] = GetCurrentThreadId(); +# endif + + /* Inform GC_start_mark_threads about completion of marker data init. */ + GC_acquire_mark_lock(); + if (0 == --GC_fl_builder_count) /* count may have a negative value */ + GC_notify_all_builder(); + + for (;; ++my_mark_no) { + if (my_mark_no - GC_mark_no > (word)2) { + /* resynchronize if we get far off, e.g. because GC_mark_no */ + /* wrapped. */ + my_mark_no = GC_mark_no; + } +# ifdef DEBUG_THREADS + GC_log_printf("Starting mark helper for mark number %lu\n", + (unsigned long)my_mark_no); +# endif + GC_help_marker(my_mark_no); + } + } + +# ifndef GC_ASSERTIONS +# define SET_MARK_LOCK_HOLDER (void)0 +# define UNSET_MARK_LOCK_HOLDER (void)0 +# endif + + /* GC_mark_threads[] is unused here unlike that in pthread_support.c */ + +# ifdef CAN_HANDLE_FORK + static int available_markers_m1 = 0; +# else +# define available_markers_m1 GC_markers_m1 +# endif + +# ifdef GC_PTHREADS_PARAMARK +# include + +# if defined(GC_ASSERTIONS) && !defined(NUMERIC_THREAD_ID) +# define NUMERIC_THREAD_ID(id) (unsigned long)(word)GC_PTHREAD_PTRVAL(id) + /* Id not guaranteed to be unique. */ +# endif + +# ifdef CAN_HANDLE_FORK + static pthread_cond_t mark_cv; + /* initialized by GC_start_mark_threads_inner */ +# else + static pthread_cond_t mark_cv = PTHREAD_COND_INITIALIZER; +# endif + + /* GC_start_mark_threads is the same as in pthread_support.c except */ + /* for thread stack that is assumed to be large enough. */ + + GC_INNER void GC_start_mark_threads_inner(void) + { + int i; + pthread_attr_t attr; + pthread_t new_thread; +# ifndef NO_MARKER_SPECIAL_SIGMASK + sigset_t set, oldset; +# endif + + GC_ASSERT(I_DONT_HOLD_LOCK()); + if (available_markers_m1 <= 0) return; + /* Skip if parallel markers disabled or already started. */ +# ifdef CAN_HANDLE_FORK + if (GC_parallel) return; + + /* Reset mark_cv state after forking (as in pthread_support.c). */ + { + pthread_cond_t mark_cv_local = PTHREAD_COND_INITIALIZER; + BCOPY(&mark_cv_local, &mark_cv, sizeof(mark_cv)); + } +# endif + + GC_ASSERT(GC_fl_builder_count == 0); + if (0 != pthread_attr_init(&attr)) ABORT("pthread_attr_init failed"); + if (0 != pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED)) + ABORT("pthread_attr_setdetachstate failed"); + +# ifndef NO_MARKER_SPECIAL_SIGMASK + /* Apply special signal mask to GC marker threads, and don't drop */ + /* user defined signals by GC marker threads. */ + if (sigfillset(&set) != 0) + ABORT("sigfillset failed"); + if (pthread_sigmask(SIG_BLOCK, &set, &oldset) < 0) { + WARN("pthread_sigmask set failed, no markers started," + " errno = %" WARN_PRIdPTR "\n", errno); + GC_markers_m1 = 0; + (void)pthread_attr_destroy(&attr); + return; + } +# endif /* !NO_MARKER_SPECIAL_SIGMASK */ + +# ifdef CAN_HANDLE_FORK + /* To have proper GC_parallel value in GC_help_marker. */ + GC_markers_m1 = available_markers_m1; +# endif + for (i = 0; i < available_markers_m1; ++i) { + marker_last_stack_min[i] = ADDR_LIMIT; + if (0 != pthread_create(&new_thread, &attr, + GC_mark_thread, (void *)(word)i)) { + WARN("Marker thread creation failed\n", 0); + /* Don't try to create other marker threads. */ + GC_markers_m1 = i; + break; + } + } + +# ifndef NO_MARKER_SPECIAL_SIGMASK + /* Restore previous signal mask. */ + if (pthread_sigmask(SIG_SETMASK, &oldset, NULL) < 0) { + WARN("pthread_sigmask restore failed, errno = %" WARN_PRIdPTR "\n", + errno); + } +# endif + + (void)pthread_attr_destroy(&attr); + GC_wait_for_markers_init(); + GC_COND_LOG_PRINTF("Started %d mark helper threads\n", GC_markers_m1); + } + +# ifdef GC_ASSERTIONS + STATIC unsigned long GC_mark_lock_holder = NO_THREAD; +# define SET_MARK_LOCK_HOLDER \ + (void)(GC_mark_lock_holder = NUMERIC_THREAD_ID(pthread_self())) +# define UNSET_MARK_LOCK_HOLDER \ + do { \ + GC_ASSERT(GC_mark_lock_holder \ + == NUMERIC_THREAD_ID(pthread_self())); \ + GC_mark_lock_holder = NO_THREAD; \ + } while (0) +# endif /* GC_ASSERTIONS */ + + static pthread_mutex_t mark_mutex = PTHREAD_MUTEX_INITIALIZER; + + static pthread_cond_t builder_cv = PTHREAD_COND_INITIALIZER; + + /* GC_acquire/release_mark_lock(), GC_wait_builder/marker(), */ + /* GC_wait_for_reclaim(), GC_notify_all_builder/marker() are the same */ + /* as in pthread_support.c except that GC_generic_lock() is not used. */ + +# ifdef LOCK_STATS + volatile AO_t GC_block_count = 0; +# endif + + GC_INNER void GC_acquire_mark_lock(void) + { +# ifdef NUMERIC_THREAD_ID_UNIQUE + GC_ASSERT(GC_mark_lock_holder != NUMERIC_THREAD_ID(pthread_self())); +# endif + if (pthread_mutex_lock(&mark_mutex) != 0) { + ABORT("pthread_mutex_lock failed"); + } +# ifdef LOCK_STATS + (void)AO_fetch_and_add1(&GC_block_count); +# endif + /* GC_generic_lock(&mark_mutex); */ + SET_MARK_LOCK_HOLDER; + } + + GC_INNER void GC_release_mark_lock(void) + { + UNSET_MARK_LOCK_HOLDER; + if (pthread_mutex_unlock(&mark_mutex) != 0) { + ABORT("pthread_mutex_unlock failed"); + } + } + + /* Collector must wait for a freelist builders for 2 reasons: */ + /* 1) Mark bits may still be getting examined without lock. */ + /* 2) Partial free lists referenced only by locals may not be */ + /* scanned correctly, e.g. if they contain "pointer-free" objects, */ + /* since the free-list link may be ignored. */ + STATIC void GC_wait_builder(void) + { + UNSET_MARK_LOCK_HOLDER; + if (pthread_cond_wait(&builder_cv, &mark_mutex) != 0) { + ABORT("pthread_cond_wait failed"); + } + GC_ASSERT(GC_mark_lock_holder == NO_THREAD); + SET_MARK_LOCK_HOLDER; + } + + GC_INNER void GC_wait_for_reclaim(void) + { + GC_acquire_mark_lock(); + while (GC_fl_builder_count > 0) { + GC_wait_builder(); + } + GC_release_mark_lock(); + } + + GC_INNER void GC_notify_all_builder(void) + { + GC_ASSERT(GC_mark_lock_holder == NUMERIC_THREAD_ID(pthread_self())); + if (pthread_cond_broadcast(&builder_cv) != 0) { + ABORT("pthread_cond_broadcast failed"); + } + } + + GC_INNER void GC_wait_marker(void) + { + GC_ASSERT(GC_parallel); + UNSET_MARK_LOCK_HOLDER; + if (pthread_cond_wait(&mark_cv, &mark_mutex) != 0) { + ABORT("pthread_cond_wait failed"); + } + GC_ASSERT(GC_mark_lock_holder == NO_THREAD); + SET_MARK_LOCK_HOLDER; + } + + GC_INNER void GC_notify_all_marker(void) + { + GC_ASSERT(GC_parallel); + if (pthread_cond_broadcast(&mark_cv) != 0) { + ABORT("pthread_cond_broadcast failed"); + } + } + +# else /* ! GC_PTHREADS_PARAMARK */ + +# ifndef MARK_THREAD_STACK_SIZE +# define MARK_THREAD_STACK_SIZE 0 /* default value */ +# endif + + /* mark_mutex_event, builder_cv, mark_cv are initialized in GC_thr_init */ + static HANDLE mark_mutex_event = (HANDLE)0; /* Event with auto-reset. */ + static HANDLE builder_cv = (HANDLE)0; /* Event with manual reset. */ + static HANDLE mark_cv = (HANDLE)0; /* Event with manual reset. */ + + GC_INNER void GC_start_mark_threads_inner(void) + { + int i; + + GC_ASSERT(I_DONT_HOLD_LOCK()); + if (available_markers_m1 <= 0) return; + + GC_ASSERT(GC_fl_builder_count == 0); + /* Initialize GC_marker_cv[] fully before starting the */ + /* first helper thread. */ + for (i = 0; i < GC_markers_m1; ++i) { + if ((GC_marker_cv[i] = CreateEvent(NULL /* attrs */, + TRUE /* isManualReset */, + FALSE /* initialState */, + NULL /* name (A/W) */)) == (HANDLE)0) + ABORT("CreateEvent failed"); + } + + for (i = 0; i < GC_markers_m1; ++i) { +# ifdef MSWINCE + HANDLE handle; + DWORD thread_id; + + marker_last_stack_min[i] = ADDR_LIMIT; + /* There is no _beginthreadex() in WinCE. */ + handle = CreateThread(NULL /* lpsa */, + MARK_THREAD_STACK_SIZE /* ignored */, + GC_mark_thread, (LPVOID)(word)i, + 0 /* fdwCreate */, &thread_id); + if (handle == NULL) { + WARN("Marker thread creation failed\n", 0); + /* The most probable failure reason is "not enough memory". */ + /* Don't try to create other marker threads. */ + break; + } else { + /* It's safe to detach the thread. */ + CloseHandle(handle); + } +# else + GC_uintptr_t handle; + unsigned thread_id; + + marker_last_stack_min[i] = ADDR_LIMIT; + handle = _beginthreadex(NULL /* security_attr */, + MARK_THREAD_STACK_SIZE, GC_mark_thread, + (void *)(word)i, 0 /* flags */, &thread_id); + if (!handle || handle == (GC_uintptr_t)-1L) { + WARN("Marker thread creation failed\n", 0); + /* Don't try to create other marker threads. */ + break; + } else {/* We may detach the thread (if handle is of HANDLE type) */ + /* CloseHandle((HANDLE)handle); */ + } +# endif + } + + /* Adjust GC_markers_m1 (and free unused resources) if failed. */ + while (GC_markers_m1 > i) { + GC_markers_m1--; + CloseHandle(GC_marker_cv[GC_markers_m1]); + } + GC_wait_for_markers_init(); + GC_COND_LOG_PRINTF("Started %d mark helper threads\n", GC_markers_m1); + if (i == 0) { + CloseHandle(mark_cv); + CloseHandle(builder_cv); + CloseHandle(mark_mutex_event); + } + } + +# ifdef GC_ASSERTIONS + STATIC DWORD GC_mark_lock_holder = NO_THREAD; +# define SET_MARK_LOCK_HOLDER \ + (void)(GC_mark_lock_holder = GetCurrentThreadId()) +# define UNSET_MARK_LOCK_HOLDER \ + do { \ + GC_ASSERT(GC_mark_lock_holder == GetCurrentThreadId()); \ + GC_mark_lock_holder = NO_THREAD; \ + } while (0) +# endif /* GC_ASSERTIONS */ + + STATIC /* volatile */ LONG GC_mark_mutex_state = 0; + /* Mutex state: 0 - unlocked, */ + /* 1 - locked and no other waiters, */ + /* -1 - locked and waiters may exist. */ + /* Accessed by InterlockedExchange(). */ + + /* #define LOCK_STATS */ +# ifdef LOCK_STATS + volatile AO_t GC_block_count = 0; + volatile AO_t GC_unlocked_count = 0; +# endif + + GC_INNER void GC_acquire_mark_lock(void) + { + GC_ASSERT(GC_mark_lock_holder != GetCurrentThreadId()); + if (InterlockedExchange(&GC_mark_mutex_state, 1 /* locked */) != 0) { +# ifdef LOCK_STATS + (void)AO_fetch_and_add1(&GC_block_count); +# endif + /* Repeatedly reset the state and wait until acquire the lock. */ + while (InterlockedExchange(&GC_mark_mutex_state, + -1 /* locked_and_has_waiters */) != 0) { + if (WaitForSingleObject(mark_mutex_event, INFINITE) == WAIT_FAILED) + ABORT("WaitForSingleObject failed"); + } + } +# ifdef LOCK_STATS + else { + (void)AO_fetch_and_add1(&GC_unlocked_count); + } +# endif + + GC_ASSERT(GC_mark_lock_holder == NO_THREAD); + SET_MARK_LOCK_HOLDER; + } + + GC_INNER void GC_release_mark_lock(void) + { + UNSET_MARK_LOCK_HOLDER; + if (InterlockedExchange(&GC_mark_mutex_state, 0 /* unlocked */) < 0) { + /* wake a waiter */ + if (SetEvent(mark_mutex_event) == FALSE) + ABORT("SetEvent failed"); + } + } + + /* In GC_wait_for_reclaim/GC_notify_all_builder() we emulate POSIX */ + /* cond_wait/cond_broadcast() primitives with WinAPI Event object */ + /* (working in "manual reset" mode). This works here because */ + /* GC_notify_all_builder() is always called holding lock on */ + /* mark_mutex and the checked condition (GC_fl_builder_count == 0) */ + /* is the only one for which broadcasting on builder_cv is performed. */ + + GC_INNER void GC_wait_for_reclaim(void) + { + GC_ASSERT(builder_cv != 0); + for (;;) { + GC_acquire_mark_lock(); + if (GC_fl_builder_count == 0) + break; + if (ResetEvent(builder_cv) == FALSE) + ABORT("ResetEvent failed"); + GC_release_mark_lock(); + if (WaitForSingleObject(builder_cv, INFINITE) == WAIT_FAILED) + ABORT("WaitForSingleObject failed"); + } + GC_release_mark_lock(); + } + + GC_INNER void GC_notify_all_builder(void) + { + GC_ASSERT(GC_mark_lock_holder == GetCurrentThreadId()); + GC_ASSERT(builder_cv != 0); + GC_ASSERT(GC_fl_builder_count == 0); + if (SetEvent(builder_cv) == FALSE) + ABORT("SetEvent failed"); + } + + /* mark_cv is used (for waiting) by a non-helper thread. */ + + GC_INNER void GC_wait_marker(void) + { + HANDLE event = mark_cv; + DWORD thread_id = GetCurrentThreadId(); + int i = GC_markers_m1; + + while (i-- > 0) { + if (GC_marker_Id[i] == thread_id) { + event = GC_marker_cv[i]; + break; + } + } + + if (ResetEvent(event) == FALSE) + ABORT("ResetEvent failed"); + GC_release_mark_lock(); + if (WaitForSingleObject(event, INFINITE) == WAIT_FAILED) + ABORT("WaitForSingleObject failed"); + GC_acquire_mark_lock(); + } + + GC_INNER void GC_notify_all_marker(void) + { + DWORD thread_id = GetCurrentThreadId(); + int i = GC_markers_m1; + + while (i-- > 0) { + /* Notify every marker ignoring self (for efficiency). */ + if (SetEvent(GC_marker_Id[i] != thread_id ? GC_marker_cv[i] : + mark_cv) == FALSE) + ABORT("SetEvent failed"); + } + } + +# endif /* ! GC_PTHREADS_PARAMARK */ + +#endif /* PARALLEL_MARK */ + + /* We have no DllMain to take care of new threads. Thus we */ + /* must properly intercept thread creation. */ + + typedef struct { + LPTHREAD_START_ROUTINE start; + LPVOID param; + } thread_args; + + STATIC void * GC_CALLBACK GC_win32_start_inner(struct GC_stack_base *sb, + void *arg) + { + void * ret; + LPTHREAD_START_ROUTINE start = ((thread_args *)arg)->start; + LPVOID param = ((thread_args *)arg)->param; + + GC_register_my_thread(sb); /* This waits for an in-progress GC. */ + +# ifdef DEBUG_THREADS + GC_log_printf("thread 0x%lx starting...\n", (long)GetCurrentThreadId()); +# endif + + GC_free(arg); + + /* Clear the thread entry even if we exit with an exception. */ + /* This is probably pointless, since an uncaught exception is */ + /* supposed to result in the process being killed. */ +# ifndef __GNUC__ + __try +# endif + { + ret = (void *)(word)(*start)(param); + } +# ifndef __GNUC__ + __finally +# endif + { + GC_unregister_my_thread(); + } + +# ifdef DEBUG_THREADS + GC_log_printf("thread 0x%lx returned from start routine\n", + (long)GetCurrentThreadId()); +# endif + return ret; + } + + STATIC DWORD WINAPI GC_win32_start(LPVOID arg) + { + return (DWORD)(word)GC_call_with_stack_base(GC_win32_start_inner, arg); + } + + GC_API HANDLE WINAPI GC_CreateThread( + LPSECURITY_ATTRIBUTES lpThreadAttributes, + GC_WIN32_SIZE_T dwStackSize, + LPTHREAD_START_ROUTINE lpStartAddress, + LPVOID lpParameter, DWORD dwCreationFlags, + LPDWORD lpThreadId) + { + if (!EXPECT(parallel_initialized, TRUE)) + GC_init_parallel(); + /* make sure GC is initialized (i.e. main thread is */ + /* attached, tls initialized). */ + +# ifdef DEBUG_THREADS + GC_log_printf("About to create a thread from 0x%lx\n", + (long)GetCurrentThreadId()); +# endif + if (GC_win32_dll_threads) { + return CreateThread(lpThreadAttributes, dwStackSize, lpStartAddress, + lpParameter, dwCreationFlags, lpThreadId); + } else { + thread_args *args = GC_malloc_uncollectable(sizeof(thread_args)); + /* Handed off to and deallocated by child thread. */ + HANDLE thread_h; + + if (0 == args) { + SetLastError(ERROR_NOT_ENOUGH_MEMORY); + return NULL; + } + + /* set up thread arguments */ + args -> start = lpStartAddress; + args -> param = lpParameter; + + set_need_to_lock(); + thread_h = CreateThread(lpThreadAttributes, dwStackSize, GC_win32_start, + args, dwCreationFlags, lpThreadId); + if (thread_h == 0) GC_free(args); + return thread_h; + } + } + + GC_API DECLSPEC_NORETURN void WINAPI GC_ExitThread(DWORD dwExitCode) + { + GC_unregister_my_thread(); + ExitThread(dwExitCode); + } + +# if !defined(MSWINCE) && !defined(CYGWIN32) + + GC_API GC_uintptr_t GC_CALL GC_beginthreadex( + void *security, unsigned stack_size, + unsigned (__stdcall *start_address)(void *), + void *arglist, unsigned initflag, + unsigned *thrdaddr) + { + if (!EXPECT(parallel_initialized, TRUE)) + GC_init_parallel(); + /* make sure GC is initialized (i.e. main thread is */ + /* attached, tls initialized). */ +# ifdef DEBUG_THREADS + GC_log_printf("About to create a thread from 0x%lx\n", + (long)GetCurrentThreadId()); +# endif + + if (GC_win32_dll_threads) { + return _beginthreadex(security, stack_size, start_address, + arglist, initflag, thrdaddr); + } else { + GC_uintptr_t thread_h; + thread_args *args = GC_malloc_uncollectable(sizeof(thread_args)); + /* Handed off to and deallocated by child thread. */ + + if (0 == args) { + /* MSDN docs say _beginthreadex() returns 0 on error and sets */ + /* errno to either EAGAIN (too many threads) or EINVAL (the */ + /* argument is invalid or the stack size is incorrect), so we */ + /* set errno to EAGAIN on "not enough memory". */ + errno = EAGAIN; + return 0; + } + + /* set up thread arguments */ + args -> start = (LPTHREAD_START_ROUTINE)start_address; + args -> param = arglist; + + set_need_to_lock(); + thread_h = _beginthreadex(security, stack_size, + (unsigned (__stdcall *)(void *))GC_win32_start, + args, initflag, thrdaddr); + if (thread_h == 0) GC_free(args); + return thread_h; + } + } + + GC_API void GC_CALL GC_endthreadex(unsigned retval) + { + GC_unregister_my_thread(); + _endthreadex(retval); + } + +# endif /* !MSWINCE && !CYGWIN32 */ + +#ifdef GC_WINMAIN_REDIRECT + /* This might be useful on WinCE. Shouldn't be used with GC_DLL. */ + +# if defined(MSWINCE) && defined(UNDER_CE) +# define WINMAIN_LPTSTR LPWSTR +# else +# define WINMAIN_LPTSTR LPSTR +# endif + + /* This is defined in gc.h. */ +# undef WinMain + + /* Defined outside GC by an application. */ + int WINAPI GC_WinMain(HINSTANCE, HINSTANCE, WINMAIN_LPTSTR, int); + + typedef struct { + HINSTANCE hInstance; + HINSTANCE hPrevInstance; + WINMAIN_LPTSTR lpCmdLine; + int nShowCmd; + } main_thread_args; + + static DWORD WINAPI main_thread_start(LPVOID arg) + { + main_thread_args * args = (main_thread_args *) arg; + return (DWORD)GC_WinMain(args->hInstance, args->hPrevInstance, + args->lpCmdLine, args->nShowCmd); + } + + STATIC void * GC_waitForSingleObjectInfinite(void * handle) + { + return (void *)(word)WaitForSingleObject((HANDLE)handle, INFINITE); + } + +# ifndef WINMAIN_THREAD_STACK_SIZE +# define WINMAIN_THREAD_STACK_SIZE 0 /* default value */ +# endif + + int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, + WINMAIN_LPTSTR lpCmdLine, int nShowCmd) + { + DWORD exit_code = 1; + + main_thread_args args = { + hInstance, hPrevInstance, lpCmdLine, nShowCmd + }; + HANDLE thread_h; + DWORD thread_id; + + /* initialize everything */ + GC_INIT(); + + /* start the main thread */ + thread_h = GC_CreateThread(NULL /* lpsa */, + WINMAIN_THREAD_STACK_SIZE /* ignored on WinCE */, + main_thread_start, &args, 0 /* fdwCreate */, + &thread_id); + + if (thread_h != NULL) { + if ((DWORD)(word)GC_do_blocking(GC_waitForSingleObjectInfinite, + (void *)thread_h) == WAIT_FAILED) + ABORT("WaitForSingleObject(main_thread) failed"); + GetExitCodeThread (thread_h, &exit_code); + CloseHandle (thread_h); + } else { + ABORT("GC_CreateThread(main_thread) failed"); + } + +# ifdef MSWINCE + GC_deinit(); + DeleteCriticalSection(&GC_allocate_ml); +# endif + return (int) exit_code; + } + +#endif /* GC_WINMAIN_REDIRECT */ + +GC_INNER void GC_thr_init(void) +{ + struct GC_stack_base sb; +# ifdef GC_ASSERTIONS + int sb_result; +# endif + + GC_ASSERT(I_HOLD_LOCK()); + if (GC_thr_initialized) return; + + GC_ASSERT((word)&GC_threads % sizeof(word) == 0); + GC_main_thread = GetCurrentThreadId(); + GC_thr_initialized = TRUE; + +# ifdef CAN_HANDLE_FORK + /* Prepare for forks if requested. */ + if (GC_handle_fork) { +# ifdef CAN_CALL_ATFORK + if (pthread_atfork(fork_prepare_proc, fork_parent_proc, + fork_child_proc) == 0) { + /* Handlers successfully registered. */ + GC_handle_fork = 1; + } else +# endif + /* else */ if (GC_handle_fork != -1) + ABORT("pthread_atfork failed"); + } +# endif + + /* Add the initial thread, so we can stop it. */ +# ifdef GC_ASSERTIONS + sb_result = +# endif + GC_get_stack_base(&sb); + GC_ASSERT(sb_result == GC_SUCCESS); + +# if defined(PARALLEL_MARK) + { + char * markers_string = GETENV("GC_MARKERS"); + int markers; + + if (markers_string != NULL) { + markers = atoi(markers_string); + if (markers <= 0 || markers > MAX_MARKERS) { + WARN("Too big or invalid number of mark threads: %" WARN_PRIdPTR + "; using maximum threads\n", (signed_word)markers); + markers = MAX_MARKERS; + } + } else { +# ifdef MSWINCE + /* There is no GetProcessAffinityMask() in WinCE. */ + /* GC_sysinfo is already initialized. */ + markers = (int)GC_sysinfo.dwNumberOfProcessors; +# else +# ifdef _WIN64 + DWORD_PTR procMask = 0; + DWORD_PTR sysMask; +# else + DWORD procMask = 0; + DWORD sysMask; +# endif + int ncpu = 0; + if (GetProcessAffinityMask(GetCurrentProcess(), + (void *)&procMask, (void *)&sysMask) + && procMask) { + do { + ncpu++; + } while ((procMask &= procMask - 1) != 0); + } + markers = ncpu; +# endif +# if defined(GC_MIN_MARKERS) && !defined(CPPCHECK) + /* This is primarily for testing on systems without getenv(). */ + if (markers < GC_MIN_MARKERS) + markers = GC_MIN_MARKERS; +# endif + if (markers > MAX_MARKERS) + markers = MAX_MARKERS; /* silently limit the value */ + } + available_markers_m1 = markers - 1; + } + + /* Check whether parallel mode could be enabled. */ + { + if (GC_win32_dll_threads || available_markers_m1 <= 0) { + /* Disable parallel marking. */ + GC_parallel = FALSE; + GC_COND_LOG_PRINTF( + "Single marker thread, turning off parallel marking\n"); + } else { +# ifndef GC_PTHREADS_PARAMARK + /* Initialize Win32 event objects for parallel marking. */ + mark_mutex_event = CreateEvent(NULL /* attrs */, + FALSE /* isManualReset */, + FALSE /* initialState */, NULL /* name */); + builder_cv = CreateEvent(NULL /* attrs */, + TRUE /* isManualReset */, + FALSE /* initialState */, NULL /* name */); + mark_cv = CreateEvent(NULL /* attrs */, TRUE /* isManualReset */, + FALSE /* initialState */, NULL /* name */); + if (mark_mutex_event == (HANDLE)0 || builder_cv == (HANDLE)0 + || mark_cv == (HANDLE)0) + ABORT("CreateEvent failed"); +# endif + /* Disable true incremental collection, but generational is OK. */ + GC_time_limit = GC_TIME_UNLIMITED; + } + } +# endif /* PARALLEL_MARK */ + + GC_ASSERT(0 == GC_lookup_thread_inner(GC_main_thread)); + GC_register_my_thread_inner(&sb, GC_main_thread); +} + +#ifdef GC_PTHREADS + + struct start_info { + void *(*start_routine)(void *); + void *arg; + GC_bool detached; + }; + + GC_API int GC_pthread_join(pthread_t pthread_id, void **retval) + { + int result; + GC_thread t; + DCL_LOCK_STATE; + + GC_ASSERT(!GC_win32_dll_threads); +# ifdef DEBUG_THREADS + GC_log_printf("thread %p(0x%lx) is joining thread %p\n", + (void *)GC_PTHREAD_PTRVAL(pthread_self()), + (long)GetCurrentThreadId(), + (void *)GC_PTHREAD_PTRVAL(pthread_id)); +# endif + + /* Thread being joined might not have registered itself yet. */ + /* After the join, thread id may have been recycled. */ + /* FIXME: It would be better if this worked more like */ + /* pthread_support.c. */ +# ifndef GC_WIN32_PTHREADS + while ((t = GC_lookup_pthread(pthread_id)) == 0) + Sleep(10); +# endif + result = pthread_join(pthread_id, retval); + if (0 == result) { +# ifdef GC_WIN32_PTHREADS + /* pthreads-win32 and winpthreads id are unique (not recycled). */ + t = GC_lookup_pthread(pthread_id); + if (NULL == t) ABORT("Thread not registered"); +# endif + + LOCK(); + if ((t -> flags & FINISHED) != 0) { + GC_delete_gc_thread_no_free(t); + GC_INTERNAL_FREE(t); + } + UNLOCK(); + } + +# ifdef DEBUG_THREADS + GC_log_printf("thread %p(0x%lx) join with thread %p %s\n", + (void *)GC_PTHREAD_PTRVAL(pthread_self()), + (long)GetCurrentThreadId(), + (void *)GC_PTHREAD_PTRVAL(pthread_id), + result != 0 ? "failed" : "succeeded"); +# endif + return result; + } + + /* Cygwin-pthreads calls CreateThread internally, but it's not easily */ + /* interceptable by us..., so intercept pthread_create instead. */ + GC_API int GC_pthread_create(pthread_t *new_thread, + GC_PTHREAD_CREATE_CONST pthread_attr_t *attr, + void *(*start_routine)(void *), void *arg) + { + int result; + struct start_info * si; + + if (!EXPECT(parallel_initialized, TRUE)) + GC_init_parallel(); + /* make sure GC is initialized (i.e. main thread is attached) */ + GC_ASSERT(!GC_win32_dll_threads); + + /* This is otherwise saved only in an area mmapped by the thread */ + /* library, which isn't visible to the collector. */ + si = GC_malloc_uncollectable(sizeof(struct start_info)); + if (0 == si) return(EAGAIN); + + si -> start_routine = start_routine; + si -> arg = arg; + if (attr != 0 && + pthread_attr_getdetachstate(attr, &si->detached) + == PTHREAD_CREATE_DETACHED) { + si->detached = TRUE; + } + +# ifdef DEBUG_THREADS + GC_log_printf("About to create a thread from %p(0x%lx)\n", + (void *)GC_PTHREAD_PTRVAL(pthread_self()), + (long)GetCurrentThreadId()); +# endif + set_need_to_lock(); + result = pthread_create(new_thread, attr, GC_pthread_start, si); + + if (result) { /* failure */ + GC_free(si); + } + return(result); + } + + STATIC void * GC_CALLBACK GC_pthread_start_inner(struct GC_stack_base *sb, + void * arg) + { + struct start_info * si = arg; + void * result; + void *(*start)(void *); + void *start_arg; + DWORD thread_id = GetCurrentThreadId(); + pthread_t pthread_id = pthread_self(); + GC_thread me; + DCL_LOCK_STATE; + +# ifdef DEBUG_THREADS + GC_log_printf("thread %p(0x%x) starting...\n", + (void *)GC_PTHREAD_PTRVAL(pthread_id), (int)thread_id); +# endif + + GC_ASSERT(!GC_win32_dll_threads); + /* If a GC occurs before the thread is registered, that GC will */ + /* ignore this thread. That's fine, since it will block trying to */ + /* acquire the allocation lock, and won't yet hold interesting */ + /* pointers. */ + LOCK(); + /* We register the thread here instead of in the parent, so that */ + /* we don't need to hold the allocation lock during pthread_create. */ + me = GC_register_my_thread_inner(sb, thread_id); + SET_PTHREAD_MAP_CACHE(pthread_id, thread_id); + me -> pthread_id = pthread_id; + if (si->detached) me -> flags |= DETACHED; + UNLOCK(); + + start = si -> start_routine; + start_arg = si -> arg; + + GC_free(si); /* was allocated uncollectible */ + + pthread_cleanup_push(GC_thread_exit_proc, (void *)me); + result = (*start)(start_arg); + me -> status = result; + pthread_cleanup_pop(1); + +# ifdef DEBUG_THREADS + GC_log_printf("thread %p(0x%x) returned from start routine\n", + (void *)GC_PTHREAD_PTRVAL(pthread_id), (int)thread_id); +# endif + return(result); + } + + STATIC void * GC_pthread_start(void * arg) + { + return GC_call_with_stack_base(GC_pthread_start_inner, arg); + } + + STATIC void GC_thread_exit_proc(void *arg) + { + GC_thread me = (GC_thread)arg; + DCL_LOCK_STATE; + + GC_ASSERT(!GC_win32_dll_threads); +# ifdef DEBUG_THREADS + GC_log_printf("thread %p(0x%lx) called pthread_exit()\n", + (void *)GC_PTHREAD_PTRVAL(pthread_self()), + (long)GetCurrentThreadId()); +# endif + + LOCK(); + GC_wait_for_gc_completion(FALSE); +# if defined(THREAD_LOCAL_ALLOC) + GC_ASSERT(GC_getspecific(GC_thread_key) == &me->tlfs); + GC_destroy_thread_local(&(me->tlfs)); +# endif + if (me -> flags & DETACHED) { + GC_delete_thread(GetCurrentThreadId()); + } else { + /* deallocate it as part of join */ + me -> flags |= FINISHED; + } +# if defined(THREAD_LOCAL_ALLOC) + /* It is required to call remove_specific defined in specific.c. */ + GC_remove_specific(GC_thread_key); +# endif + UNLOCK(); + } + +# ifndef GC_NO_PTHREAD_SIGMASK + /* Win32 pthread does not support sigmask. */ + /* So, nothing required here... */ + GC_API int GC_pthread_sigmask(int how, const sigset_t *set, + sigset_t *oset) + { + return pthread_sigmask(how, set, oset); + } +# endif /* !GC_NO_PTHREAD_SIGMASK */ + + GC_API int GC_pthread_detach(pthread_t thread) + { + int result; + GC_thread t; + DCL_LOCK_STATE; + + GC_ASSERT(!GC_win32_dll_threads); + /* The thread might not have registered itself yet. */ + /* TODO: Wait for registration of the created thread in pthread_create. */ + while ((t = GC_lookup_pthread(thread)) == NULL) + Sleep(10); + result = pthread_detach(thread); + if (result == 0) { + LOCK(); + t -> flags |= DETACHED; + /* Here the pthread thread id may have been recycled. */ + if ((t -> flags & FINISHED) != 0) { + GC_delete_gc_thread_no_free(t); + GC_INTERNAL_FREE(t); + } + UNLOCK(); + } + return result; + } + +#elif !defined(GC_NO_THREADS_DISCOVERY) + /* We avoid acquiring locks here, since this doesn't seem to be */ + /* preemptible. This may run with an uninitialized collector, in */ + /* which case we don't do much. This implies that no threads other */ + /* than the main one should be created with an uninitialized */ + /* collector. (The alternative of initializing the collector here */ + /* seems dangerous, since DllMain is limited in what it can do.) */ + +# ifdef GC_INSIDE_DLL + /* Export only if needed by client. */ + GC_API +# else +# define GC_DllMain DllMain +# endif + BOOL WINAPI GC_DllMain(HINSTANCE inst GC_ATTR_UNUSED, ULONG reason, + LPVOID reserved GC_ATTR_UNUSED) + { + DWORD thread_id; + static int entry_count = 0; + + /* Note that GC_use_threads_discovery should be called by the */ + /* client application at start-up to activate automatic thread */ + /* registration (it is the default GC behavior since v7.0alpha7); */ + /* to always have automatic thread registration turned on, the GC */ + /* should be compiled with -D GC_DISCOVER_TASK_THREADS. */ + if (!GC_win32_dll_threads && parallel_initialized) return TRUE; + + switch (reason) { + case DLL_THREAD_ATTACH: +# ifdef PARALLEL_MARK + /* Don't register marker threads. */ + if (GC_parallel) { + /* We could reach here only if parallel_initialized == FALSE. */ + break; + } +# endif + GC_ASSERT(entry_count == 0 || parallel_initialized); + ++entry_count; + /* FALLTHRU */ + case DLL_PROCESS_ATTACH: + /* This may run with the collector uninitialized. */ + thread_id = GetCurrentThreadId(); + if (parallel_initialized && GC_main_thread != thread_id) { +# ifdef PARALLEL_MARK + ABORT("Cannot initialize parallel marker from DllMain"); +# else + struct GC_stack_base sb; + /* Don't lock here. */ +# ifdef GC_ASSERTIONS + int sb_result = +# endif + GC_get_stack_base(&sb); + GC_ASSERT(sb_result == GC_SUCCESS); + GC_register_my_thread_inner(&sb, thread_id); +# endif + } /* o.w. we already did it during GC_thr_init, called by GC_init */ + break; + + case DLL_THREAD_DETACH: + /* We are hopefully running in the context of the exiting thread. */ + GC_ASSERT(parallel_initialized); + if (GC_win32_dll_threads) { + GC_delete_thread(GetCurrentThreadId()); + } + break; + + case DLL_PROCESS_DETACH: + if (GC_win32_dll_threads) { + int i; + int my_max = (int)GC_get_max_thread_index(); + + for (i = 0; i <= my_max; ++i) { + if (AO_load(&(dll_thread_table[i].tm.in_use))) + GC_delete_gc_thread_no_free(&dll_thread_table[i]); + } + GC_deinit(); + DeleteCriticalSection(&GC_allocate_ml); + } + break; + } + return TRUE; + } +#endif /* !GC_NO_THREADS_DISCOVERY && !GC_PTHREADS */ + +/* Perform all initializations, including those that */ +/* may require allocation. */ +/* Called without allocation lock. */ +/* Must be called before a second thread is created. */ +GC_INNER void GC_init_parallel(void) +{ +# if defined(THREAD_LOCAL_ALLOC) + GC_thread me; + DCL_LOCK_STATE; +# endif + + if (parallel_initialized) return; + parallel_initialized = TRUE; + /* GC_init() calls us back, so set flag first. */ + + if (!GC_is_initialized) GC_init(); +# if defined(CPPCHECK) && !defined(GC_NO_THREADS_DISCOVERY) + GC_noop1((word)&GC_DllMain); +# endif + if (GC_win32_dll_threads) { + set_need_to_lock(); + /* Cannot intercept thread creation. Hence we don't know if */ + /* other threads exist. However, client is not allowed to */ + /* create other threads before collector initialization. */ + /* Thus it's OK not to lock before this. */ + } + /* Initialize thread local free lists if used. */ +# if defined(THREAD_LOCAL_ALLOC) + LOCK(); + me = GC_lookup_thread_inner(GetCurrentThreadId()); + CHECK_LOOKUP_MY_THREAD(me); + GC_init_thread_local(&me->tlfs); + UNLOCK(); +# endif +} + +#if defined(USE_PTHREAD_LOCKS) + /* Support for pthread locking code. */ + /* pthread_mutex_trylock may not win here, */ + /* due to builtin support for spinning first? */ + + GC_INNER void GC_lock(void) + { + pthread_mutex_lock(&GC_allocate_ml); + } +#endif /* USE_PTHREAD_LOCKS */ + +#if defined(THREAD_LOCAL_ALLOC) + + /* Add thread-local allocation support. VC++ uses __declspec(thread). */ + + /* We must explicitly mark ptrfree and gcj free lists, since the free */ + /* list links wouldn't otherwise be found. We also set them in the */ + /* normal free lists, since that involves touching less memory than if */ + /* we scanned them normally. */ + GC_INNER void GC_mark_thread_local_free_lists(void) + { + int i; + GC_thread p; + + for (i = 0; i < THREAD_TABLE_SZ; ++i) { + for (p = GC_threads[i]; 0 != p; p = p -> tm.next) { + if (!KNOWN_FINISHED(p)) { +# ifdef DEBUG_THREADS + GC_log_printf("Marking thread locals for 0x%x\n", (int)p -> id); +# endif + GC_mark_thread_local_fls_for(&(p->tlfs)); + } + } + } + } + +# if defined(GC_ASSERTIONS) + void GC_check_tls_for(GC_tlfs p); +# if defined(USE_CUSTOM_SPECIFIC) + void GC_check_tsd_marks(tsd *key); +# endif + /* Check that all thread-local free-lists are completely marked. */ + /* also check that thread-specific-data structures are marked. */ + void GC_check_tls(void) + { + int i; + GC_thread p; + + for (i = 0; i < THREAD_TABLE_SZ; ++i) { + for (p = GC_threads[i]; 0 != p; p = p -> tm.next) { + if (!KNOWN_FINISHED(p)) + GC_check_tls_for(&(p->tlfs)); + } + } +# if defined(USE_CUSTOM_SPECIFIC) + if (GC_thread_key != 0) + GC_check_tsd_marks(GC_thread_key); +# endif + } +# endif /* GC_ASSERTIONS */ + +#endif /* THREAD_LOCAL_ALLOC ... */ + +# ifndef GC_NO_THREAD_REDIRECTS + /* Restore thread calls redirection. */ +# define CreateThread GC_CreateThread +# define ExitThread GC_ExitThread +# undef _beginthreadex +# define _beginthreadex GC_beginthreadex +# undef _endthreadex +# define _endthreadex GC_endthreadex +# endif /* !GC_NO_THREAD_REDIRECTS */ + +#endif /* GC_WIN32_THREADS */