#ifndef JEMALLOC_INTERNAL_DEFS_H_ #define JEMALLOC_INTERNAL_DEFS_H_ /* * If JEMALLOC_PREFIX is defined via --with-jemalloc-prefix, it will cause all * public APIs to be prefixed. This makes it possible, with some care, to use * multiple allocators simultaneously. */ #undef JEMALLOC_PREFIX #undef JEMALLOC_CPREFIX /* * Define overrides for non-standard allocator-related functions if they are * present on the system. */ #undef JEMALLOC_OVERRIDE___LIBC_CALLOC #undef JEMALLOC_OVERRIDE___LIBC_FREE #undef JEMALLOC_OVERRIDE___LIBC_MALLOC #undef JEMALLOC_OVERRIDE___LIBC_MEMALIGN #undef JEMALLOC_OVERRIDE___LIBC_REALLOC #undef JEMALLOC_OVERRIDE___LIBC_VALLOC #undef JEMALLOC_OVERRIDE___POSIX_MEMALIGN /* * JEMALLOC_PRIVATE_NAMESPACE is used as a prefix for all library-private APIs. * For shared libraries, symbol visibility mechanisms prevent these symbols * from being exported, but for static libraries, naming collisions are a real * possibility. */ #undef JEMALLOC_PRIVATE_NAMESPACE /* * Hyper-threaded CPUs may need a special instruction inside spin loops in * order to yield to another virtual CPU. */ #undef CPU_SPINWAIT /* 1 if CPU_SPINWAIT is defined, 0 otherwise. */ #undef HAVE_CPU_SPINWAIT /* * Number of significant bits in virtual addresses. This may be less than the * total number of bits in a pointer, e.g. on x64, for which the uppermost 16 * bits are the same as bit 47. */ #undef LG_VADDR /* Defined if C11 atomics are available. */ #undef JEMALLOC_C11_ATOMICS /* Defined if GCC __atomic atomics are available. */ #undef JEMALLOC_GCC_ATOMIC_ATOMICS /* and the 8-bit variant support. */ #undef JEMALLOC_GCC_U8_ATOMIC_ATOMICS /* Defined if GCC __sync atomics are available. */ #undef JEMALLOC_GCC_SYNC_ATOMICS /* and the 8-bit variant support. */ #undef JEMALLOC_GCC_U8_SYNC_ATOMICS /* * Defined if __builtin_clz() and __builtin_clzl() are available. */ #undef JEMALLOC_HAVE_BUILTIN_CLZ /* * Defined if os_unfair_lock_*() functions are available, as provided by Darwin. */ #undef JEMALLOC_OS_UNFAIR_LOCK /* Defined if syscall(2) is usable. */ #undef JEMALLOC_USE_SYSCALL /* * Defined if secure_getenv(3) is available. */ #undef JEMALLOC_HAVE_SECURE_GETENV /* * Defined if issetugid(2) is available. */ #undef JEMALLOC_HAVE_ISSETUGID /* Defined if pthread_atfork(3) is available. */ #undef JEMALLOC_HAVE_PTHREAD_ATFORK /* Defined if pthread_setname_np(3) is available. */ #undef JEMALLOC_HAVE_PTHREAD_SETNAME_NP /* * Defined if clock_gettime(CLOCK_MONOTONIC_COARSE, ...) is available. */ #undef JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE /* * Defined if clock_gettime(CLOCK_MONOTONIC, ...) is available. */ #undef JEMALLOC_HAVE_CLOCK_MONOTONIC /* * Defined if mach_absolute_time() is available. */ #undef JEMALLOC_HAVE_MACH_ABSOLUTE_TIME /* * Defined if _malloc_thread_cleanup() exists. At least in the case of * FreeBSD, pthread_key_create() allocates, which if used during malloc * bootstrapping will cause recursion into the pthreads library. Therefore, if * _malloc_thread_cleanup() exists, use it as the basis for thread cleanup in * malloc_tsd. */ #undef JEMALLOC_MALLOC_THREAD_CLEANUP /* * Defined if threaded initialization is known to be safe on this platform. * Among other things, it must be possible to initialize a mutex without * triggering allocation in order for threaded allocation to be safe. */ #undef JEMALLOC_THREADED_INIT /* * Defined if the pthreads implementation defines * _pthread_mutex_init_calloc_cb(), in which case the function is used in order * to avoid recursive allocation during mutex initialization. */ #undef JEMALLOC_MUTEX_INIT_CB /* Non-empty if the tls_model attribute is supported. */ #undef JEMALLOC_TLS_MODEL /* * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables * inline functions. */ #undef JEMALLOC_DEBUG /* JEMALLOC_STATS enables statistics calculation. */ #undef JEMALLOC_STATS /* JEMALLOC_EXPERIMENTAL_SMALLOCX_API enables experimental smallocx API. */ #undef JEMALLOC_EXPERIMENTAL_SMALLOCX_API /* JEMALLOC_PROF enables allocation profiling. */ #undef JEMALLOC_PROF /* Use libunwind for profile backtracing if defined. */ #undef JEMALLOC_PROF_LIBUNWIND /* Use libgcc for profile backtracing if defined. */ #undef JEMALLOC_PROF_LIBGCC /* Use gcc intrinsics for profile backtracing if defined. */ #undef JEMALLOC_PROF_GCC /* * JEMALLOC_DSS enables use of sbrk(2) to allocate extents from the data storage * segment (DSS). */ #undef JEMALLOC_DSS /* Support memory filling (junk/zero). */ #undef JEMALLOC_FILL /* Support utrace(2)-based tracing. */ #undef JEMALLOC_UTRACE /* Support optional abort() on OOM. */ #undef JEMALLOC_XMALLOC /* Support lazy locking (avoid locking unless a second thread is launched). */ #undef JEMALLOC_LAZY_LOCK /* * Minimum allocation alignment is 2^LG_QUANTUM bytes (ignoring tiny size * classes). */ #undef LG_QUANTUM /* One page is 2^LG_PAGE bytes. */ #undef LG_PAGE /* * One huge page is 2^LG_HUGEPAGE bytes. Note that this is defined even if the * system does not explicitly support huge pages; system calls that require * explicit huge page support are separately configured. */ #undef LG_HUGEPAGE /* * If defined, adjacent virtual memory mappings with identical attributes * automatically coalesce, and they fragment when changes are made to subranges. * This is the normal order of things for mmap()/munmap(), but on Windows * VirtualAlloc()/VirtualFree() operations must be precisely matched, i.e. * mappings do *not* coalesce/fragment. */ #undef JEMALLOC_MAPS_COALESCE /* * If defined, retain memory for later reuse by default rather than using e.g. * munmap() to unmap freed extents. This is enabled on 64-bit Linux because * common sequences of mmap()/munmap() calls will cause virtual memory map * holes. */ #undef JEMALLOC_RETAIN /* TLS is used to map arenas and magazine caches to threads. */ #undef JEMALLOC_TLS /* * Used to mark unreachable code to quiet "end of non-void" compiler warnings. * Don't use this directly; instead use unreachable() from util.h */ #undef JEMALLOC_INTERNAL_UNREACHABLE /* * ffs*() functions to use for bitmapping. Don't use these directly; instead, * use ffs_*() from util.h. */ #undef JEMALLOC_INTERNAL_FFSLL #undef JEMALLOC_INTERNAL_FFSL #undef JEMALLOC_INTERNAL_FFS /* * popcount*() functions to use for bitmapping. */ #undef JEMALLOC_INTERNAL_POPCOUNTL #undef JEMALLOC_INTERNAL_POPCOUNT /* * If defined, explicitly attempt to more uniformly distribute large allocation * pointer alignments across all cache indices. */ #undef JEMALLOC_CACHE_OBLIVIOUS /* * If defined, enable logging facilities. We make this a configure option to * avoid taking extra branches everywhere. */ #undef JEMALLOC_LOG /* * If defined, use readlinkat() (instead of readlink()) to follow * /etc/malloc_conf. */ #undef JEMALLOC_READLINKAT /* * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings. */ #undef JEMALLOC_ZONE /* * Methods for determining whether the OS overcommits. * JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY: Linux's * /proc/sys/vm.overcommit_memory file. * JEMALLOC_SYSCTL_VM_OVERCOMMIT: FreeBSD's vm.overcommit sysctl. */ #undef JEMALLOC_SYSCTL_VM_OVERCOMMIT #undef JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY /* Defined if madvise(2) is available. */ #undef JEMALLOC_HAVE_MADVISE /* * Defined if transparent huge pages are supported via the MADV_[NO]HUGEPAGE * arguments to madvise(2). */ #undef JEMALLOC_HAVE_MADVISE_HUGE /* * Methods for purging unused pages differ between operating systems. * * madvise(..., MADV_FREE) : This marks pages as being unused, such that they * will be discarded rather than swapped out. * madvise(..., MADV_DONTNEED) : If JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS is * defined, this immediately discards pages, * such that new pages will be demand-zeroed if * the address region is later touched; * otherwise this behaves similarly to * MADV_FREE, though typically with higher * system overhead. */ #undef JEMALLOC_PURGE_MADVISE_FREE #undef JEMALLOC_PURGE_MADVISE_DONTNEED #undef JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS /* Defined if madvise(2) is available but MADV_FREE is not (x86 Linux only). */ #undef JEMALLOC_DEFINE_MADVISE_FREE /* * Defined if MADV_DO[NT]DUMP is supported as an argument to madvise. */ #undef JEMALLOC_MADVISE_DONTDUMP /* * Defined if transparent huge pages (THPs) are supported via the * MADV_[NO]HUGEPAGE arguments to madvise(2), and THP support is enabled. */ #undef JEMALLOC_THP /* Define if operating system has alloca.h header. */ #undef JEMALLOC_HAS_ALLOCA_H /* C99 restrict keyword supported. */ #undef JEMALLOC_HAS_RESTRICT /* For use by hash code. */ #undef JEMALLOC_BIG_ENDIAN /* sizeof(int) == 2^LG_SIZEOF_INT. */ #undef LG_SIZEOF_INT /* sizeof(long) == 2^LG_SIZEOF_LONG. */ #undef LG_SIZEOF_LONG /* sizeof(long long) == 2^LG_SIZEOF_LONG_LONG. */ #undef LG_SIZEOF_LONG_LONG /* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */ #undef LG_SIZEOF_INTMAX_T /* glibc malloc hooks (__malloc_hook, __realloc_hook, __free_hook). */ #undef JEMALLOC_GLIBC_MALLOC_HOOK /* glibc memalign hook. */ #undef JEMALLOC_GLIBC_MEMALIGN_HOOK /* pthread support */ #undef JEMALLOC_HAVE_PTHREAD /* dlsym() support */ #undef JEMALLOC_HAVE_DLSYM /* Adaptive mutex support in pthreads. */ #undef JEMALLOC_HAVE_PTHREAD_MUTEX_ADAPTIVE_NP /* GNU specific sched_getcpu support */ #undef JEMALLOC_HAVE_SCHED_GETCPU /* GNU specific sched_setaffinity support */ #undef JEMALLOC_HAVE_SCHED_SETAFFINITY /* * If defined, all the features necessary for background threads are present. */ #undef JEMALLOC_BACKGROUND_THREAD /* * If defined, jemalloc symbols are not exported (doesn't work when * JEMALLOC_PREFIX is not defined). */ #undef JEMALLOC_EXPORT /* config.malloc_conf options string. */ #undef JEMALLOC_CONFIG_MALLOC_CONF /* If defined, jemalloc takes the malloc/free/etc. symbol names. */ #undef JEMALLOC_IS_MALLOC /* * Defined if strerror_r returns char * if _GNU_SOURCE is defined. */ #undef JEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE /* Performs additional safety checks when defined. */ #undef JEMALLOC_OPT_SAFETY_CHECKS #endif /* JEMALLOC_INTERNAL_DEFS_H_ */