3 /******************************************************************
5 AmigaOS-spesific routines for GC.
6 This file is normally included from os_dep.c
8 ******************************************************************/
11 #if !defined(GC_AMIGA_DEF) && !defined(GC_AMIGA_SB) && !defined(GC_AMIGA_DS) && !defined(GC_AMIGA_AM)
25 # include <exec/exec.h>
27 # include <proto/exec.h>
28 # include <proto/dos.h>
29 # include <dos/dosextens.h>
30 # include <workbench/startup.h>
39 /******************************************************************
40 Find the base of the stack.
41 ******************************************************************/
43 ptr_t GC_get_stack_base()
45 struct Process *proc = (struct Process*)SysBase->ThisTask;
47 /* Reference: Amiga Guru Book Pages: 42,567,574 */
48 if (proc->pr_Task.tc_Node.ln_Type==NT_PROCESS
49 && proc->pr_CLI != NULL) {
50 /* first ULONG is StackSize */
51 /*longPtr = proc->pr_ReturnAddr;
54 return (char *)proc->pr_ReturnAddr + sizeof(ULONG);
56 return (char *)proc->pr_Task.tc_SPUpper;
60 #if 0 /* old version */
61 ptr_t GC_get_stack_base()
63 extern struct WBStartup *_WBenchMsg;
68 struct CommandLineInterface *cli;
71 if ((task = FindTask(0)) == 0) {
72 GC_err_puts("Cannot find own task structure\n");
73 ABORT("task missing");
75 proc = (struct Process *)task;
76 cli = BADDR(proc->pr_CLI);
78 if (_WBenchMsg != 0 || cli == 0) {
79 size = (char *)task->tc_SPUpper - (char *)task->tc_SPLower;
81 size = cli->cli_DefaultStack * 4;
83 return (ptr_t)(__base + GC_max(size, __stack));
92 /******************************************************************
93 Register data segments.
94 ******************************************************************/
96 void GC_register_data_segments()
99 struct CommandLineInterface *cli;
108 GC_bool found_segment = FALSE;
109 extern char __data_size[];
111 dataSegSize=__data_size+8;
112 /* Can`t find the Location of __data_size, because
113 it`s possible that is it, inside the segment. */
117 proc= (struct Process*)SysBase->ThisTask;
119 /* Reference: Amiga Guru Book Pages: 538ff,565,573
121 if (proc->pr_Task.tc_Node.ln_Type==NT_PROCESS) {
122 if (proc->pr_CLI == NULL) {
123 myseglist = proc->pr_SegList;
125 /* ProcLoaded 'Loaded as a command: '*/
126 cli = BADDR(proc->pr_CLI);
127 myseglist = cli->cli_Module;
130 ABORT("Not a Process.");
133 if (myseglist == NULL) {
134 ABORT("Arrrgh.. can't find segments, aborting");
137 /* xoper hunks Shell Process */
140 for (data = (ULONG *)BADDR(myseglist); data != NULL;
141 data = (ULONG *)BADDR(data[0])) {
142 if (((ULONG) GC_register_data_segments < (ULONG) &data[1]) ||
143 ((ULONG) GC_register_data_segments > (ULONG) &data[1] + data[-1])) {
145 if (dataSegSize == data[-1]) {
146 found_segment = TRUE;
149 GC_add_roots_inner((char *)&data[1],
150 ((char *)&data[1]) + data[-1], FALSE);
155 if (!found_segment) {
156 ABORT("Can`t find correct Segments.\nSolution: Use an newer version of ixemul.library");
161 #if 0 /* old version */
162 void GC_register_data_segments()
164 extern struct WBStartup *_WBenchMsg;
165 struct Process *proc;
166 struct CommandLineInterface *cli;
170 if ( _WBenchMsg != 0 ) {
171 if ((myseglist = _WBenchMsg->sm_Segment) == 0) {
172 GC_err_puts("No seglist from workbench\n");
176 if ((proc = (struct Process *)FindTask(0)) == 0) {
177 GC_err_puts("Cannot find process structure\n");
180 if ((cli = BADDR(proc->pr_CLI)) == 0) {
181 GC_err_puts("No CLI\n");
184 if ((myseglist = cli->cli_Module) == 0) {
185 GC_err_puts("No seglist from CLI\n");
190 for (data = (ULONG *)BADDR(myseglist); data != 0;
191 data = (ULONG *)BADDR(data[0])) {
192 # ifdef AMIGA_SKIP_SEG
193 if (((ULONG) GC_register_data_segments < (ULONG) &data[1]) ||
194 ((ULONG) GC_register_data_segments > (ULONG) &data[1] + data[-1])) {
197 # endif /* AMIGA_SKIP_SEG */
198 GC_add_roots_inner((char *)&data[1],
199 ((char *)&data[1]) + data[-1], FALSE);
203 #endif /* old version */
212 #ifndef GC_AMIGA_FASTALLOC
214 void *GC_amiga_allocwrapper(size_t size,void *(*AllocFunction)(size_t size2)){
215 return (*AllocFunction)(size);
218 void *(*GC_amiga_allocwrapper_do)(size_t size,void *(*AllocFunction)(size_t size2))
219 =GC_amiga_allocwrapper;
226 void *GC_amiga_allocwrapper_firsttime(size_t size,void *(*AllocFunction)(size_t size2));
228 void *(*GC_amiga_allocwrapper_do)(size_t size,void *(*AllocFunction)(size_t size2))
229 =GC_amiga_allocwrapper_firsttime;
232 /******************************************************************
233 Amiga-spesific routines to obtain memory, and force GC to give
234 back fast-mem whenever possible.
235 These hacks makes gc-programs go many times faster when
236 the amiga is low on memory, and are therefore strictly necesarry.
238 -Kjetil S. Matheussen, 2000.
239 ******************************************************************/
243 /* List-header for all allocated memory. */
245 struct GC_Amiga_AllocedMemoryHeader{
247 struct GC_Amiga_AllocedMemoryHeader *next;
249 struct GC_Amiga_AllocedMemoryHeader *GC_AMIGAMEM=(struct GC_Amiga_AllocedMemoryHeader *)(int)~(NULL);
253 /* Type of memory. Once in the execution of a program, this might change to MEMF_ANY|MEMF_CLEAR */
255 ULONG GC_AMIGA_MEMF = MEMF_FAST | MEMF_CLEAR;
258 /* Prevents GC_amiga_get_mem from allocating memory if this one is TRUE. */
259 #ifndef GC_AMIGA_ONLYFAST
260 BOOL GC_amiga_dontalloc=FALSE;
263 #ifdef GC_AMIGA_PRINTSTATS
265 int nsucc=0,nsucc2=0;
285 /* Free everything at program-end. */
287 void GC_amiga_free_all_mem(void){
288 struct GC_Amiga_AllocedMemoryHeader *gc_am=(struct GC_Amiga_AllocedMemoryHeader *)(~(int)(GC_AMIGAMEM));
289 struct GC_Amiga_AllocedMemoryHeader *temp;
291 #ifdef GC_AMIGA_PRINTSTATS
293 "%d bytes of chip-mem, and %d bytes of fast-mem where allocated from the OS.\n",
297 "%d bytes of chip-mem were returned from the GC_AMIGA_FASTALLOC supported allocating functions.\n",
301 printf("GC_gcollect was called %d times to avoid returning NULL or start allocating with the MEMF_ANY flag.\n",numcollects);
302 printf("%d of them was a success. (the others had to use allocation from the OS.)\n",nullretries);
304 printf("Succeded forcing %d gc-allocations (%d bytes) of chip-mem to be fast-mem.\n",succ,succ2);
305 printf("Failed forcing %d gc-allocations (%d bytes) of chip-mem to be fast-mem.\n",nsucc,nsucc2);
308 "Number of retries before succeding a chip->fast force:\n"
309 "0: %d, 1: %d, 2-9: %d, 10-49: %d, 50-149: %d, >150: %d\n",
310 cur0,cur1,cur10,cur50,cur150,cur151
313 "Number of retries before giving up a chip->fast force:\n"
314 "0: %d, 1: %d, 2-9: %d, 10-49: %d, 50-149: %d, >150: %d\n",
315 ncur0,ncur1,ncur10,ncur50,ncur150,ncur151
321 FreeMem(gc_am,gc_am->size);
322 gc_am=(struct GC_Amiga_AllocedMemoryHeader *)(~(int)(temp));
326 #ifndef GC_AMIGA_ONLYFAST
328 /* All memory with address lower than this one is chip-mem. */
334 * Allways set to the last size of memory tried to be allocated.
335 * Needed to ensure allocation when the size is bigger than 100000.
344 * The actual function that is called with the GET_MEM macro.
348 void *GC_amiga_get_mem(size_t size){
349 struct GC_Amiga_AllocedMemoryHeader *gc_am;
351 #ifndef GC_AMIGA_ONLYFAST
352 if(GC_amiga_dontalloc==TRUE){
353 // printf("rejected, size: %d, latestsize: %d\n",size,latestsize);
357 // We really don't want to use chip-mem, but if we must, then as little as possible.
358 if(GC_AMIGA_MEMF==(MEMF_ANY|MEMF_CLEAR) && size>100000 && latestsize<50000) return NULL;
361 gc_am=AllocMem((ULONG)(size + sizeof(struct GC_Amiga_AllocedMemoryHeader)),GC_AMIGA_MEMF);
362 if(gc_am==NULL) return NULL;
364 gc_am->next=GC_AMIGAMEM;
365 gc_am->size=size + sizeof(struct GC_Amiga_AllocedMemoryHeader);
366 GC_AMIGAMEM=(struct GC_Amiga_AllocedMemoryHeader *)(~(int)(gc_am));
368 // printf("Allocated %d (%d) bytes at address: %x. Latest: %d\n",size,tot,gc_am,latestsize);
370 #ifdef GC_AMIGA_PRINTSTATS
371 if((char *)gc_am<chipmax){
385 #ifndef GC_AMIGA_ONLYFAST
387 /* Tries very hard to force GC to find fast-mem to return. Done recursively
388 * to hold the rejected memory-pointers reachable from the collector in an
392 #ifdef GC_AMIGA_RETRY
393 void *GC_amiga_rec_alloc(size_t size,void *(*AllocFunction)(size_t size2),const int rec){
396 ret=(*AllocFunction)(size);
398 #ifdef GC_AMIGA_PRINTSTATS
399 if((char *)ret>chipmax || ret==NULL){
405 if(rec>1 && rec<10) ncur10++;
406 if(rec>=10 && rec<50) ncur50++;
407 if(rec>=50 && rec<150) ncur150++;
408 if(rec>=150) ncur151++;
414 if(rec>1 && rec<10) cur10++;
415 if(rec>=10 && rec<50) cur50++;
416 if(rec>=50 && rec<150) cur150++;
417 if(rec>=150) cur151++;
422 if (((char *)ret)<=chipmax && ret!=NULL && (rec<(size>500000?9:size/5000))){
423 ret=GC_amiga_rec_alloc(size,AllocFunction,rec+1);
432 /* The allocating-functions defined inside the amiga-blocks in gc.h is called
433 * via these functions.
437 void *GC_amiga_allocwrapper_any(size_t size,void *(*AllocFunction)(size_t size2)){
440 GC_amiga_dontalloc=TRUE; // Pretty tough thing to do, but its indeed necesarry.
443 ret=(*AllocFunction)(size);
445 if(((char *)ret) <= chipmax){
447 //Give GC access to allocate memory.
451 #ifdef GC_AMIGA_PRINTSTATS
454 ret=(*AllocFunction)(size);
458 GC_amiga_dontalloc=FALSE;
459 ret=(*AllocFunction)(size);
461 WARN("Out of Memory! Returning NIL!\n", 0);
464 #ifdef GC_AMIGA_PRINTSTATS
468 if(ret!=NULL && (char *)ret<=chipmax) chipa+=size;
471 #ifdef GC_AMIGA_RETRY
473 /* We got chip-mem. Better try again and again and again etc., we might get fast-mem sooner or later... */
474 /* Using gctest to check the effectiviness of doing this, does seldom give a very good result. */
475 /* However, real programs doesn't normally rapidly allocate and deallocate. */
476 // printf("trying to force... %d bytes... ",size);
478 AllocFunction!=GC_malloc_uncollectable
479 #ifdef ATOMIC_UNCOLLECTABLE
480 && AllocFunction!=GC_malloc_atomic_uncollectable
483 ret2=GC_amiga_rec_alloc(size,AllocFunction,0);
485 ret2=(*AllocFunction)(size);
486 #ifdef GC_AMIGA_PRINTSTATS
487 if((char *)ret2<chipmax || ret2==NULL){
498 if(((char *)ret2)>chipmax){
499 // printf("Succeeded.\n");
504 // printf("But did not succeed.\n");
510 GC_amiga_dontalloc=FALSE;
517 void (*GC_amiga_toany)(void)=NULL;
519 void GC_amiga_set_toany(void (*func)(void)){
523 #endif // !GC_AMIGA_ONLYFAST
526 void *GC_amiga_allocwrapper_fast(size_t size,void *(*AllocFunction)(size_t size2)){
529 ret=(*AllocFunction)(size);
532 // Enable chip-mem allocation.
533 // printf("ret==NULL\n");
537 #ifdef GC_AMIGA_PRINTSTATS
540 ret=(*AllocFunction)(size);
544 #ifndef GC_AMIGA_ONLYFAST
545 GC_AMIGA_MEMF=MEMF_ANY | MEMF_CLEAR;
546 if(GC_amiga_toany!=NULL) (*GC_amiga_toany)();
547 GC_amiga_allocwrapper_do=GC_amiga_allocwrapper_any;
548 return GC_amiga_allocwrapper_any(size,AllocFunction);
551 #ifdef GC_AMIGA_PRINTSTATS
561 void *GC_amiga_allocwrapper_firsttime(size_t size,void *(*AllocFunction)(size_t size2)){
562 atexit(&GC_amiga_free_all_mem);
563 chipmax=(char *)SysBase->MaxLocMem; // For people still having SysBase in chip-mem, this might speed up a bit.
564 GC_amiga_allocwrapper_do=GC_amiga_allocwrapper_fast;
565 return GC_amiga_allocwrapper_fast(size,AllocFunction);
569 #endif //GC_AMIGA_FASTALLOC
574 * The wrapped realloc function.
577 void *GC_amiga_realloc(void *old_object,size_t new_size_in_bytes){
578 #ifndef GC_AMIGA_FASTALLOC
579 return GC_realloc(old_object,new_size_in_bytes);
582 latestsize=new_size_in_bytes;
583 ret=GC_realloc(old_object,new_size_in_bytes);
584 if(ret==NULL && GC_AMIGA_MEMF==(MEMF_FAST | MEMF_CLEAR)){
585 /* Out of fast-mem. */
589 #ifdef GC_AMIGA_PRINTSTATS
592 ret=GC_realloc(old_object,new_size_in_bytes);
596 #ifndef GC_AMIGA_ONLYFAST
597 GC_AMIGA_MEMF=MEMF_ANY | MEMF_CLEAR;
598 if(GC_amiga_toany!=NULL) (*GC_amiga_toany)();
599 GC_amiga_allocwrapper_do=GC_amiga_allocwrapper_any;
600 ret=GC_realloc(old_object,new_size_in_bytes);
603 #ifdef GC_AMIGA_PRINTSTATS
610 WARN("Out of Memory! Returning NIL!\n", 0);
612 #ifdef GC_AMIGA_PRINTSTATS
613 if(((char *)ret)<chipmax && ret!=NULL){
614 chipa+=new_size_in_bytes;