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
}
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();
}
/* We hold the allocation lock. */
void GC_thr_init(void)
{
# ifndef GC_DARWIN_THREADS
int dummy;
# endif
GC_thread t;
if (GC_thr_initialized) return;
GC_thr_initialized = TRUE;
# ifdef HANDLE_FORK
/* Prepare for a possible fork. */
pthread_atfork(GC_fork_prepare_proc, GC_fork_parent_proc,
GC_fork_child_proc);
# endif /* HANDLE_FORK */
# if defined(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)(&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");
}
GC_add_roots_inner(main_thread_start, main_thread_end, FALSE);
}
# endif
/* Add the initial thread, so we can stop it. */
t = GC_new_thread(pthread_self());
# ifdef GC_DARWIN_THREADS
t -> stop_info.mach_thread = mach_thread_self();
# else
t -> stop_info.stack_ptr = (ptr_t)(&dummy);
# endif
t -> flags = DETACHED | MAIN_THREAD;
GC_stop_init();
/* 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(GC_HPUX_THREADS)
GC_nprocs = pthread_num_processors_np();
# endif
# if defined(GC_OSF1_THREADS) || defined(GC_AIX_THREADS) \
|| defined(GC_SOLARIS_THREADS) || defined(GC_GNU_THREADS)
GC_nprocs = sysconf(_SC_NPROCESSORS_ONLN);
if (GC_nprocs <= 0) GC_nprocs = 1;
# endif
# if defined(GC_IRIX_THREADS)
GC_nprocs = sysconf(_SC_NPROC_ONLN);
if (GC_nprocs <= 0) GC_nprocs = 1;
# endif
# if defined(GC_NETBSD_THREADS)
GC_nprocs = get_ncpu();
# endif
# if defined(GC_OPENBSD_THREADS)
GC_nprocs = 1;
# endif
# if defined(GC_DARWIN_THREADS) || defined(GC_FREEBSD_THREADS)
int ncpus = 1;
size_t len = sizeof(ncpus);
sysctl((int[2]) {CTL_HW, HW_NCPU}, 2, &ncpus, &len, NULL, 0);
/* xoper hunks Shell Process */
num=0;
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);
}
++num;
} /* for */
# ifdef __GNUC__
if (!found_segment) {
ABORT("Can`t find correct Segments.\nSolution: Use an newer version of ixemul.library");
}
# endif
}
#if 0 /* old version */
void GC_register_data_segments()
{
extern struct WBStartup *_WBenchMsg;
struct Process *proc;
struct CommandLineInterface *cli;
BPTR myseglist;
ULONG *data;
if ( _WBenchMsg != 0 ) {
if ((myseglist = _WBenchMsg->sm_Segment) == 0) {
GC_err_puts("No seglist from workbench\n");
return;
}
} else {
if ((proc = (struct Process *)FindTask(0)) == 0) {
GC_err_puts("Cannot find process structure\n");
return;
}
if ((cli = BADDR(proc->pr_CLI)) == 0) {
GC_err_puts("No CLI\n");
return;
}
if ((myseglist = cli->cli_Module) == 0) {
GC_err_puts("No seglist from CLI\n");
return;
}
}
for (data = (ULONG *)BADDR(myseglist); data != 0;
data = (ULONG *)BADDR(data[0])) {
# ifdef AMIGA_SKIP_SEG
if (((ULONG) GC_register_data_segments < (ULONG) &data[1]) ||
((ULONG) GC_register_data_segments > (ULONG) &data[1] + data[-1])) {
# else
{
# endif /* AMIGA_SKIP_SEG */
GC_add_roots_inner((char *)&data[1],
((char *)&data[1]) + data[-1], FALSE);
}
}
}
#endif /* old version */
#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-spesific 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 necesarry.
-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));
struct GC_Amiga_AllocedMemoryHeader *temp;
#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("Succeded 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 succeding 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) {
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;
/*
* Allways 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
/*
* 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) {
// printf("rejected, size: %d, latestsize: %d\n",size,latestsize);
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));
// printf("Allocated %d (%d) bytes at address: %x. Latest: %d\n",size,tot,gc_am,latestsize);
#ifdef GC_AMIGA_PRINTSTATS
if((char *)gc_am<chipmax) {
allochip+=size;
} else {
allocfast+=size;
}
#endif
return gc_am+1;
}
#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);
// GC_free(ret2);
}
return ret;
}
/* this function is called repeatedly by GC_register_map_entries. */
GC_INNER void GC_remove_roots_subregion(ptr_t b, ptr_t e)
{
int i;
GC_bool rebuild = FALSE;
GC_ASSERT(I_HOLD_LOCK());
GC_ASSERT((word)b % sizeof(word) == 0 && (word)e % sizeof(word) == 0);
for (i = 0; i < n_root_sets; i++) {
ptr_t r_start, r_end;
if (GC_static_roots[i].r_tmp) {
/* The remaining roots are skipped as they are all temporary. */
# ifdef GC_ASSERTIONS
int j;
for (j = i + 1; j < n_root_sets; j++) {
GC_ASSERT(GC_static_roots[j].r_tmp);
}
# endif
break;
}
r_start = GC_static_roots[i].r_start;
r_end = GC_static_roots[i].r_end;
if (!EXPECT((word)e <= (word)r_start || (word)r_end <= (word)b, TRUE)) {
# ifdef DEBUG_ADD_DEL_ROOTS
GC_log_printf("Removing %p .. %p from root section %d (%p .. %p)\n",
(void *)b, (void *)e,
i, (void *)r_start, (void *)r_end);
# endif
if ((word)r_start < (word)b) {
GC_root_size -= r_end - b;
GC_static_roots[i].r_end = b;
/* No need to rebuild as hash does not use r_end value. */
if ((word)e < (word)r_end) {
int j;
if (rebuild) {
GC_rebuild_root_index();
rebuild = FALSE;
}
GC_add_roots_inner(e, r_end, FALSE); /* updates n_root_sets */
for (j = i + 1; j < n_root_sets; j++)
if (GC_static_roots[j].r_tmp)
break;
if (j < n_root_sets-1 && !GC_static_roots[n_root_sets-1].r_tmp) {
/* Exchange the roots to have all temporary ones at the end. */
ptr_t tmp_r_start = GC_static_roots[j].r_start;
ptr_t tmp_r_end = GC_static_roots[j].r_end;
GC_static_roots[j].r_start =
GC_static_roots[n_root_sets-1].r_start;
GC_static_roots[j].r_end = GC_static_roots[n_root_sets-1].r_end;
GC_static_roots[j].r_tmp = FALSE;
GC_static_roots[n_root_sets-1].r_start = tmp_r_start;
GC_static_roots[n_root_sets-1].r_end = tmp_r_end;
GC_static_roots[n_root_sets-1].r_tmp = TRUE;
rebuild = TRUE;
}
}
} else {
if ((word)e < (word)r_end) {
GC_root_size -= e - r_start;
GC_static_roots[i].r_start = e;
} else {
GC_remove_root_at_pos(i);
i--;
}
rebuild = TRUE;
}
}
}
if (rebuild)
GC_rebuild_root_index();
}
