/******************************************************************
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 <stdio.h>
# include <signal.h>
# define GC_AMIGA_DEF
# define GC_AMIGA_SB
# define GC_AMIGA_DS
# define GC_AMIGA_AM
#endif
#ifdef GC_AMIGA_DEF
# ifndef __GNUC__
# include <exec/exec.h>
# endif
# include <proto/exec.h>
# include <proto/dos.h>
# include <dos/dosextens.h>
# include <workbench/startup.h>
#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_am<chipmax){
allochip+=size;
}else{
allocfast+=size;
}
#endif
return gc_am+1;
}
#endif
#ifndef GC_AMIGA_ONLYFAST
/* Tries very hard to force GC to find fast-mem to return. Done recursively
* to hold the rejected memory-pointers reachable from the collector in an
* easy way.
*
*/
#ifdef GC_AMIGA_RETRY
void *GC_amiga_rec_alloc(size_t size,void *(*AllocFunction)(size_t size2),const int rec){
void *ret;
ret=(*AllocFunction)(size);
#ifdef GC_AMIGA_PRINTSTATS
if((char *)ret>chipmax || 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 *)ret2<chipmax || ret2==NULL){
nsucc++;
nsucc2+=size;
ncur0++;
}else{
succ++;
succ2+=size;
cur0++;
}
#endif
}
if(((char *)ret2)>chipmax){
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)<chipmax && ret!=NULL){
chipa+=new_size_in_bytes;
}
#endif
return ret;
#endif
}
#endif /* GC_AMIGA_AM */