source: trunk/src/gcc/boehm-gc/AmigaOS.c@ 1036

Last change on this file since 1036 was 2, checked in by bird, 22 years ago

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1
2
3/******************************************************************
4
5 AmigaOS-spesific routines for GC.
6 This file is normally included from os_dep.c
7
8******************************************************************/
9
10
11#if !defined(GC_AMIGA_DEF) && !defined(GC_AMIGA_SB) && !defined(GC_AMIGA_DS) && !defined(GC_AMIGA_AM)
12# include "gc_priv.h"
13# include <stdio.h>
14# include <signal.h>
15# define GC_AMIGA_DEF
16# define GC_AMIGA_SB
17# define GC_AMIGA_DS
18# define GC_AMIGA_AM
19#endif
20
21
22#ifdef GC_AMIGA_DEF
23
24# ifndef __GNUC__
25# include <exec/exec.h>
26# endif
27# include <proto/exec.h>
28# include <proto/dos.h>
29# include <dos/dosextens.h>
30# include <workbench/startup.h>
31
32#endif
33
34
35
36
37#ifdef GC_AMIGA_SB
38
39/******************************************************************
40 Find the base of the stack.
41******************************************************************/
42
43ptr_t GC_get_stack_base()
44{
45 struct Process *proc = (struct Process*)SysBase->ThisTask;
46
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;
52 size = longPtr[0];*/
53
54 return (char *)proc->pr_ReturnAddr + sizeof(ULONG);
55 } else {
56 return (char *)proc->pr_Task.tc_SPUpper;
57 }
58}
59
60#if 0 /* old version */
61ptr_t GC_get_stack_base()
62{
63 extern struct WBStartup *_WBenchMsg;
64 extern long __base;
65 extern long __stack;
66 struct Task *task;
67 struct Process *proc;
68 struct CommandLineInterface *cli;
69 long size;
70
71 if ((task = FindTask(0)) == 0) {
72 GC_err_puts("Cannot find own task structure\n");
73 ABORT("task missing");
74 }
75 proc = (struct Process *)task;
76 cli = BADDR(proc->pr_CLI);
77
78 if (_WBenchMsg != 0 || cli == 0) {
79 size = (char *)task->tc_SPUpper - (char *)task->tc_SPLower;
80 } else {
81 size = cli->cli_DefaultStack * 4;
82 }
83 return (ptr_t)(__base + GC_max(size, __stack));
84}
85#endif
86
87
88#endif
89
90
91#ifdef GC_AMIGA_DS
92/******************************************************************
93 Register data segments.
94******************************************************************/
95
96 void GC_register_data_segments()
97 {
98 struct Process *proc;
99 struct CommandLineInterface *cli;
100 BPTR myseglist;
101 ULONG *data;
102
103 int num;
104
105
106# ifdef __GNUC__
107 ULONG dataSegSize;
108 GC_bool found_segment = FALSE;
109 extern char __data_size[];
110
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. */
114
115# endif
116
117 proc= (struct Process*)SysBase->ThisTask;
118
119 /* Reference: Amiga Guru Book Pages: 538ff,565,573
120 and XOper.asm */
121 if (proc->pr_Task.tc_Node.ln_Type==NT_PROCESS) {
122 if (proc->pr_CLI == NULL) {
123 myseglist = proc->pr_SegList;
124 } else {
125 /* ProcLoaded 'Loaded as a command: '*/
126 cli = BADDR(proc->pr_CLI);
127 myseglist = cli->cli_Module;
128 }
129 } else {
130 ABORT("Not a Process.");
131 }
132
133 if (myseglist == NULL) {
134 ABORT("Arrrgh.. can't find segments, aborting");
135 }
136
137 /* xoper hunks Shell Process */
138
139 num=0;
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])) {
144# ifdef __GNUC__
145 if (dataSegSize == data[-1]) {
146 found_segment = TRUE;
147 }
148# endif
149 GC_add_roots_inner((char *)&data[1],
150 ((char *)&data[1]) + data[-1], FALSE);
151 }
152 ++num;
153 } /* for */
154# ifdef __GNUC__
155 if (!found_segment) {
156 ABORT("Can`t find correct Segments.\nSolution: Use an newer version of ixemul.library");
157 }
158# endif
159 }
160
161#if 0 /* old version */
162 void GC_register_data_segments()
163 {
164 extern struct WBStartup *_WBenchMsg;
165 struct Process *proc;
166 struct CommandLineInterface *cli;
167 BPTR myseglist;
168 ULONG *data;
169
170 if ( _WBenchMsg != 0 ) {
171 if ((myseglist = _WBenchMsg->sm_Segment) == 0) {
172 GC_err_puts("No seglist from workbench\n");
173 return;
174 }
175 } else {
176 if ((proc = (struct Process *)FindTask(0)) == 0) {
177 GC_err_puts("Cannot find process structure\n");
178 return;
179 }
180 if ((cli = BADDR(proc->pr_CLI)) == 0) {
181 GC_err_puts("No CLI\n");
182 return;
183 }
184 if ((myseglist = cli->cli_Module) == 0) {
185 GC_err_puts("No seglist from CLI\n");
186 return;
187 }
188 }
189
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])) {
195# else
196 {
197# endif /* AMIGA_SKIP_SEG */
198 GC_add_roots_inner((char *)&data[1],
199 ((char *)&data[1]) + data[-1], FALSE);
200 }
201 }
202 }
203#endif /* old version */
204
205
206#endif
207
208
209
210#ifdef GC_AMIGA_AM
211
212#ifndef GC_AMIGA_FASTALLOC
213
214void *GC_amiga_allocwrapper(size_t size,void *(*AllocFunction)(size_t size2)){
215 return (*AllocFunction)(size);
216}
217
218void *(*GC_amiga_allocwrapper_do)(size_t size,void *(*AllocFunction)(size_t size2))
219 =GC_amiga_allocwrapper;
220
221#else
222
223
224
225
226void *GC_amiga_allocwrapper_firsttime(size_t size,void *(*AllocFunction)(size_t size2));
227
228void *(*GC_amiga_allocwrapper_do)(size_t size,void *(*AllocFunction)(size_t size2))
229 =GC_amiga_allocwrapper_firsttime;
230
231
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.
237
238 -Kjetil S. Matheussen, 2000.
239******************************************************************/
240
241
242
243/* List-header for all allocated memory. */
244
245struct GC_Amiga_AllocedMemoryHeader{
246 ULONG size;
247 struct GC_Amiga_AllocedMemoryHeader *next;
248};
249struct GC_Amiga_AllocedMemoryHeader *GC_AMIGAMEM=(struct GC_Amiga_AllocedMemoryHeader *)(int)~(NULL);
250
251
252
253/* Type of memory. Once in the execution of a program, this might change to MEMF_ANY|MEMF_CLEAR */
254
255ULONG GC_AMIGA_MEMF = MEMF_FAST | MEMF_CLEAR;
256
257
258/* Prevents GC_amiga_get_mem from allocating memory if this one is TRUE. */
259#ifndef GC_AMIGA_ONLYFAST
260BOOL GC_amiga_dontalloc=FALSE;
261#endif
262
263#ifdef GC_AMIGA_PRINTSTATS
264int succ=0,succ2=0;
265int nsucc=0,nsucc2=0;
266int nullretries=0;
267int numcollects=0;
268int chipa=0;
269int allochip=0;
270int allocfast=0;
271int cur0=0;
272int cur1=0;
273int cur10=0;
274int cur50=0;
275int cur150=0;
276int cur151=0;
277int ncur0=0;
278int ncur1=0;
279int ncur10=0;
280int ncur50=0;
281int ncur150=0;
282int ncur151=0;
283#endif
284
285/* Free everything at program-end. */
286
287void 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;
290
291#ifdef GC_AMIGA_PRINTSTATS
292 printf("\n\n"
293 "%d bytes of chip-mem, and %d bytes of fast-mem where allocated from the OS.\n",
294 allochip,allocfast
295 );
296 printf(
297 "%d bytes of chip-mem were returned from the GC_AMIGA_FASTALLOC supported allocating functions.\n",
298 chipa
299 );
300 printf("\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);
303 printf("\n");
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);
306 printf("\n");
307 printf(
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
311 );
312 printf(
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
316 );
317#endif
318
319 while(gc_am!=NULL){
320 temp=gc_am->next;
321 FreeMem(gc_am,gc_am->size);
322 gc_am=(struct GC_Amiga_AllocedMemoryHeader *)(~(int)(temp));
323 }
324}
325
326#ifndef GC_AMIGA_ONLYFAST
327
328/* All memory with address lower than this one is chip-mem. */
329
330char *chipmax;
331
332
333/*
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.
336 *
337 */
338size_t latestsize;
339
340#endif
341
342
343/*
344 * The actual function that is called with the GET_MEM macro.
345 *
346 */
347
348void *GC_amiga_get_mem(size_t size){
349 struct GC_Amiga_AllocedMemoryHeader *gc_am;
350
351#ifndef GC_AMIGA_ONLYFAST
352 if(GC_amiga_dontalloc==TRUE){
353// printf("rejected, size: %d, latestsize: %d\n",size,latestsize);
354 return NULL;
355 }
356
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;
359#endif
360
361 gc_am=AllocMem((ULONG)(size + sizeof(struct GC_Amiga_AllocedMemoryHeader)),GC_AMIGA_MEMF);
362 if(gc_am==NULL) return NULL;
363
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));
367
368// printf("Allocated %d (%d) bytes at address: %x. Latest: %d\n",size,tot,gc_am,latestsize);
369
370#ifdef GC_AMIGA_PRINTSTATS
371 if((char *)gc_am<chipmax){
372 allochip+=size;
373 }else{
374 allocfast+=size;
375 }
376#endif
377
378 return gc_am+1;
379
380}
381
382
383
384
385#ifndef GC_AMIGA_ONLYFAST
386
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
389 * easy way.
390 *
391 */
392#ifdef GC_AMIGA_RETRY
393void *GC_amiga_rec_alloc(size_t size,void *(*AllocFunction)(size_t size2),const int rec){
394 void *ret;
395
396 ret=(*AllocFunction)(size);
397
398#ifdef GC_AMIGA_PRINTSTATS
399 if((char *)ret>chipmax || ret==NULL){
400 if(ret==NULL){
401 nsucc++;
402 nsucc2+=size;
403 if(rec==0) ncur0++;
404 if(rec==1) ncur1++;
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++;
409 }else{
410 succ++;
411 succ2+=size;
412 if(rec==0) cur0++;
413 if(rec==1) cur1++;
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++;
418 }
419 }
420#endif
421
422 if (((char *)ret)<=chipmax && ret!=NULL && (rec<(size>500000?9:size/5000))){
423 ret=GC_amiga_rec_alloc(size,AllocFunction,rec+1);
424// GC_free(ret2);
425 }
426
427 return ret;
428}
429#endif
430
431
432/* The allocating-functions defined inside the amiga-blocks in gc.h is called
433 * via these functions.
434 */
435
436
437void *GC_amiga_allocwrapper_any(size_t size,void *(*AllocFunction)(size_t size2)){
438 void *ret,*ret2;
439
440 GC_amiga_dontalloc=TRUE; // Pretty tough thing to do, but its indeed necesarry.
441 latestsize=size;
442
443 ret=(*AllocFunction)(size);
444
445 if(((char *)ret) <= chipmax){
446 if(ret==NULL){
447 //Give GC access to allocate memory.
448#ifdef GC_AMIGA_GC
449 if(!GC_dont_gc){
450 GC_gcollect();
451#ifdef GC_AMIGA_PRINTSTATS
452 numcollects++;
453#endif
454 ret=(*AllocFunction)(size);
455 }
456#endif
457 if(ret==NULL){
458 GC_amiga_dontalloc=FALSE;
459 ret=(*AllocFunction)(size);
460 if(ret==NULL){
461 WARN("Out of Memory! Returning NIL!\n", 0);
462 }
463 }
464#ifdef GC_AMIGA_PRINTSTATS
465 else{
466 nullretries++;
467 }
468 if(ret!=NULL && (char *)ret<=chipmax) chipa+=size;
469#endif
470 }
471#ifdef GC_AMIGA_RETRY
472 else{
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);
477 if(
478 AllocFunction!=GC_malloc_uncollectable
479#ifdef ATOMIC_UNCOLLECTABLE
480 && AllocFunction!=GC_malloc_atomic_uncollectable
481#endif
482 ){
483 ret2=GC_amiga_rec_alloc(size,AllocFunction,0);
484 }else{
485 ret2=(*AllocFunction)(size);
486#ifdef GC_AMIGA_PRINTSTATS
487 if((char *)ret2<chipmax || ret2==NULL){
488 nsucc++;
489 nsucc2+=size;
490 ncur0++;
491 }else{
492 succ++;
493 succ2+=size;
494 cur0++;
495 }
496#endif
497 }
498 if(((char *)ret2)>chipmax){
499// printf("Succeeded.\n");
500 GC_free(ret);
501 ret=ret2;
502 }else{
503 GC_free(ret2);
504// printf("But did not succeed.\n");
505 }
506 }
507#endif
508 }
509
510 GC_amiga_dontalloc=FALSE;
511
512 return ret;
513}
514
515
516
517void (*GC_amiga_toany)(void)=NULL;
518
519void GC_amiga_set_toany(void (*func)(void)){
520 GC_amiga_toany=func;
521}
522
523#endif // !GC_AMIGA_ONLYFAST
524
525
526void *GC_amiga_allocwrapper_fast(size_t size,void *(*AllocFunction)(size_t size2)){
527 void *ret;
528
529 ret=(*AllocFunction)(size);
530
531 if(ret==NULL){
532 // Enable chip-mem allocation.
533// printf("ret==NULL\n");
534#ifdef GC_AMIGA_GC
535 if(!GC_dont_gc){
536 GC_gcollect();
537#ifdef GC_AMIGA_PRINTSTATS
538 numcollects++;
539#endif
540 ret=(*AllocFunction)(size);
541 }
542#endif
543 if(ret==NULL){
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);
549#endif
550 }
551#ifdef GC_AMIGA_PRINTSTATS
552 else{
553 nullretries++;
554 }
555#endif
556 }
557
558 return ret;
559}
560
561void *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);
566}
567
568
569#endif //GC_AMIGA_FASTALLOC
570
571
572
573/*
574 * The wrapped realloc function.
575 *
576 */
577void *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);
580#else
581 void *ret;
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. */
586#ifdef GC_AMIGA_GC
587 if(!GC_dont_gc){
588 GC_gcollect();
589#ifdef GC_AMIGA_PRINTSTATS
590 numcollects++;
591#endif
592 ret=GC_realloc(old_object,new_size_in_bytes);
593 }
594#endif
595 if(ret==NULL){
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);
601#endif
602 }
603#ifdef GC_AMIGA_PRINTSTATS
604 else{
605 nullretries++;
606 }
607#endif
608 }
609 if(ret==NULL){
610 WARN("Out of Memory! Returning NIL!\n", 0);
611 }
612#ifdef GC_AMIGA_PRINTSTATS
613 if(((char *)ret)<chipmax && ret!=NULL){
614 chipa+=new_size_in_bytes;
615 }
616#endif
617 return ret;
618#endif
619}
620
621#endif //GC_AMIGA_AM
622
623
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