2 * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
3 * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved.
4 * Copyright (c) 1997 by Silicon Graphics. All rights reserved.
5 * Copyright (c) 1999-2000 by Hewlett-Packard Company. All rights reserved.
7 * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
8 * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
10 * Permission is hereby granted to use or copy this program
11 * for any purpose, provided the above notices are retained on all copies.
12 * Permission to modify the code and to distribute modified code is granted,
13 * provided the above notices are retained, and a notice that the code was
14 * modified is included with the above copyright notice.
17 #include "private/dbg_mlc.h"
19 void GC_default_print_heap_obj_proc();
20 GC_API void GC_register_finalizer_no_order
21 GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd,
22 GC_finalization_proc *ofn, GC_PTR *ocd));
25 #ifndef SHORT_DBG_HDRS
26 /* Check whether object with base pointer p has debugging info */
27 /* p is assumed to point to a legitimate object in our part */
29 /* This excludes the check as to whether the back pointer is */
30 /* odd, which is added by the GC_HAS_DEBUG_INFO macro. */
31 /* Note that if DBG_HDRS_ALL is set, uncollectable objects */
32 /* on free lists may not have debug information set. Thus it's */
33 /* not always safe to return TRUE, even if the client does */
35 GC_bool GC_has_other_debug_info(p)
38 register oh * ohdr = (oh *)p;
39 register ptr_t body = (ptr_t)(ohdr + 1);
40 register word sz = GC_size((ptr_t) ohdr);
42 if (HBLKPTR((ptr_t)ohdr) != HBLKPTR((ptr_t)body)
43 || sz < sizeof (oh)) {
46 if (ohdr -> oh_sz == sz) {
47 /* Object may have had debug info, but has been deallocated */
50 if (ohdr -> oh_sf == (START_FLAG ^ (word)body)) return(TRUE);
51 if (((word *)ohdr)[BYTES_TO_WORDS(sz)-1] == (END_FLAG ^ (word)body)) {
62 # if defined(LINUX) || defined(SUNOS4) || defined(SUNOS5) \
63 || defined(HPUX) || defined(IRIX) || defined(OSF1)
64 # define RANDOM() random()
66 # define RANDOM() (long)rand()
69 /* Store back pointer to source in dest, if that appears to be possible. */
70 /* This is not completely safe, since we may mistakenly conclude that */
71 /* dest has a debugging wrapper. But the error probability is very */
72 /* small, and this shouldn't be used in production code. */
73 /* We assume that dest is the real base pointer. Source will usually */
74 /* be a pointer to the interior of an object. */
75 void GC_store_back_pointer(ptr_t source, ptr_t dest)
77 if (GC_HAS_DEBUG_INFO(dest)) {
78 ((oh *)dest) -> oh_back_ptr = HIDE_BACK_PTR(source);
82 void GC_marked_for_finalization(ptr_t dest) {
83 GC_store_back_pointer(MARKED_FOR_FINALIZATION, dest);
86 /* Store information about the object referencing dest in *base_p */
88 /* source is root ==> *base_p = address, *offset_p = 0 */
89 /* source is heap object ==> *base_p != 0, *offset_p = offset */
90 /* Returns 1 on success, 0 if source couldn't be determined. */
91 /* Dest can be any address within a heap object. */
92 GC_ref_kind GC_get_back_ptr_info(void *dest, void **base_p, size_t *offset_p)
94 oh * hdr = (oh *)GC_base(dest);
97 if (!GC_HAS_DEBUG_INFO((ptr_t) hdr)) return GC_NO_SPACE;
98 bp = REVEAL_POINTER(hdr -> oh_back_ptr);
99 if (MARKED_FOR_FINALIZATION == bp) return GC_FINALIZER_REFD;
100 if (MARKED_FROM_REGISTER == bp) return GC_REFD_FROM_REG;
101 if (NOT_MARKED == bp) return GC_UNREFERENCED;
103 /* Heuristically try to fix off by 1 errors we introduced by */
104 /* insisting on even addresses. */
106 ptr_t alternate_ptr = bp + 1;
107 ptr_t target = *(ptr_t *)bp;
108 ptr_t alternate_target = *(ptr_t *)alternate_ptr;
110 if (alternate_target >= GC_least_plausible_heap_addr
111 && alternate_target <= GC_greatest_plausible_heap_addr
112 && (target < GC_least_plausible_heap_addr
113 || target > GC_greatest_plausible_heap_addr)) {
118 bp_base = GC_base(bp);
122 return GC_REFD_FROM_ROOT;
124 if (GC_HAS_DEBUG_INFO(bp_base)) bp_base += sizeof(oh);
126 *offset_p = bp - bp_base;
127 return GC_REFD_FROM_HEAP;
131 /* Generate a random heap address. */
132 /* The resulting address is in the heap, but */
133 /* not necessarily inside a valid object. */
134 void *GC_generate_random_heap_address(void)
137 long heap_offset = RANDOM();
138 if (GC_heapsize > RAND_MAX) {
139 heap_offset *= RAND_MAX;
140 heap_offset += RANDOM();
142 heap_offset %= GC_heapsize;
143 /* This doesn't yield a uniform distribution, especially if */
144 /* e.g. RAND_MAX = 1.5* GC_heapsize. But for typical cases, */
145 /* it's not too bad. */
146 for (i = 0; i < GC_n_heap_sects; ++ i) {
147 int size = GC_heap_sects[i].hs_bytes;
148 if (heap_offset < size) {
149 return GC_heap_sects[i].hs_start + heap_offset;
154 ABORT("GC_generate_random_heap_address: size inconsistency");
159 /* Generate a random address inside a valid marked heap object. */
160 void *GC_generate_random_valid_address(void)
165 result = GC_generate_random_heap_address();
166 base = GC_base(result);
167 if (0 == base) continue;
168 if (!GC_is_marked(base)) continue;
173 /* Print back trace for p */
174 void GC_print_backtrace(void *p)
182 GC_print_heap_obj(GC_base(current));
183 GC_err_printf0("\n");
185 source = GC_get_back_ptr_info(current, &base, &offset);
186 if (GC_UNREFERENCED == source) {
187 GC_err_printf0("Reference could not be found\n");
190 if (GC_NO_SPACE == source) {
191 GC_err_printf0("No debug info in object: Can't find reference\n");
194 GC_err_printf1("Reachable via %d levels of pointers from ",
197 case GC_REFD_FROM_ROOT:
198 GC_err_printf1("root at 0x%lx\n", (unsigned long)base);
200 case GC_REFD_FROM_REG:
201 GC_err_printf0("root in register\n");
203 case GC_FINALIZER_REFD:
204 GC_err_printf0("list of finalizable objects\n");
206 case GC_REFD_FROM_HEAP:
207 GC_err_printf1("offset %ld in object:\n", (unsigned long)offset);
208 /* Take GC_base(base) to get real base, i.e. header. */
209 GC_print_heap_obj(GC_base(base));
210 GC_err_printf0("\n");
218 /* Force a garbage collection and generate a backtrace from a */
219 /* random heap address. */
220 void GC_generate_random_backtrace(void)
224 current = GC_generate_random_valid_address();
225 GC_printf1("Chose address 0x%lx in object\n", (unsigned long)current);
226 GC_print_backtrace(current);
229 #endif /* KEEP_BACK_PTRS */
231 /* Store debugging info into p. Return displaced pointer. */
232 /* Assumes we don't hold allocation lock. */
233 ptr_t GC_store_debug_info(p, sz, string, integer)
234 register ptr_t p; /* base pointer */
236 GC_CONST char * string;
239 register word * result = (word *)((oh *)p + 1);
242 /* There is some argument that we should dissble signals here. */
243 /* But that's expensive. And this way things should only appear */
244 /* inconsistent while we're in the handler. */
246 # ifdef KEEP_BACK_PTRS
247 ((oh *)p) -> oh_back_ptr = HIDE_BACK_PTR(NOT_MARKED);
249 ((oh *)p) -> oh_string = string;
250 ((oh *)p) -> oh_int = integer;
251 # ifndef SHORT_DBG_HDRS
252 ((oh *)p) -> oh_sz = sz;
253 ((oh *)p) -> oh_sf = START_FLAG ^ (word)result;
254 ((word *)p)[BYTES_TO_WORDS(GC_size(p))-1] =
255 result[SIMPLE_ROUNDED_UP_WORDS(sz)] = END_FLAG ^ (word)result;
258 return((ptr_t)result);
262 /* Store debugging info into p. Return displaced pointer. */
263 /* This version assumes we do hold the allocation lock. */
264 ptr_t GC_store_debug_info_inner(p, sz, string, integer)
265 register ptr_t p; /* base pointer */
270 register word * result = (word *)((oh *)p + 1);
272 /* There is some argument that we should disable signals here. */
273 /* But that's expensive. And this way things should only appear */
274 /* inconsistent while we're in the handler. */
275 # ifdef KEEP_BACK_PTRS
276 ((oh *)p) -> oh_back_ptr = 0;
278 ((oh *)p) -> oh_string = string;
279 ((oh *)p) -> oh_int = integer;
280 # ifndef SHORT_DBG_HDRS
281 ((oh *)p) -> oh_sz = sz;
282 ((oh *)p) -> oh_sf = START_FLAG ^ (word)result;
283 ((word *)p)[BYTES_TO_WORDS(GC_size(p))-1] =
284 result[SIMPLE_ROUNDED_UP_WORDS(sz)] = END_FLAG ^ (word)result;
286 return((ptr_t)result);
290 #ifndef SHORT_DBG_HDRS
291 /* Check the object with debugging info at ohdr */
292 /* return NIL if it's OK. Else return clobbered */
294 ptr_t GC_check_annotated_obj(ohdr)
297 register ptr_t body = (ptr_t)(ohdr + 1);
298 register word gc_sz = GC_size((ptr_t)ohdr);
299 if (ohdr -> oh_sz + DEBUG_BYTES > gc_sz) {
300 return((ptr_t)(&(ohdr -> oh_sz)));
302 if (ohdr -> oh_sf != (START_FLAG ^ (word)body)) {
303 return((ptr_t)(&(ohdr -> oh_sf)));
305 if (((word *)ohdr)[BYTES_TO_WORDS(gc_sz)-1] != (END_FLAG ^ (word)body)) {
306 return((ptr_t)((word *)ohdr + BYTES_TO_WORDS(gc_sz)-1));
308 if (((word *)body)[SIMPLE_ROUNDED_UP_WORDS(ohdr -> oh_sz)]
309 != (END_FLAG ^ (word)body)) {
310 return((ptr_t)((word *)body + SIMPLE_ROUNDED_UP_WORDS(ohdr -> oh_sz)));
314 #endif /* !SHORT_DBG_HDRS */
319 register oh * ohdr = (oh *)GC_base(p);
321 GC_err_printf1("0x%lx (", ((unsigned long)ohdr + sizeof(oh)));
322 GC_err_puts(ohdr -> oh_string);
323 # ifdef SHORT_DBG_HDRS
324 GC_err_printf1(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int));
326 GC_err_printf2(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int),
327 (unsigned long)(ohdr -> oh_sz));
329 PRINT_CALL_CHAIN(ohdr);
332 # if defined(__STDC__) || defined(__cplusplus)
333 void GC_debug_print_heap_obj_proc(ptr_t p)
335 void GC_debug_print_heap_obj_proc(p)
339 if (GC_HAS_DEBUG_INFO(p)) {
342 GC_default_print_heap_obj_proc(p);
346 #ifndef SHORT_DBG_HDRS
347 void GC_print_smashed_obj(p, clobbered_addr)
348 ptr_t p, clobbered_addr;
350 register oh * ohdr = (oh *)GC_base(p);
352 GC_err_printf2("0x%lx in object at 0x%lx(", (unsigned long)clobbered_addr,
354 if (clobbered_addr <= (ptr_t)(&(ohdr -> oh_sz))
355 || ohdr -> oh_string == 0) {
356 GC_err_printf1("<smashed>, appr. sz = %ld)\n",
357 (GC_size((ptr_t)ohdr) - DEBUG_BYTES));
359 if (ohdr -> oh_string[0] == '\0') {
360 GC_err_puts("EMPTY(smashed?)");
362 GC_err_puts(ohdr -> oh_string);
364 GC_err_printf2(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int),
365 (unsigned long)(ohdr -> oh_sz));
366 PRINT_CALL_CHAIN(ohdr);
371 void GC_check_heap_proc GC_PROTO((void));
373 void GC_do_nothing() {}
375 void GC_start_debugging()
377 # ifndef SHORT_DBG_HDRS
378 GC_check_heap = GC_check_heap_proc;
380 GC_check_heap = GC_do_nothing;
382 GC_print_heap_obj = GC_debug_print_heap_obj_proc;
383 GC_debugging_started = TRUE;
384 GC_register_displacement((word)sizeof(oh));
387 # if defined(__STDC__) || defined(__cplusplus)
388 void GC_debug_register_displacement(GC_word offset)
390 void GC_debug_register_displacement(offset)
394 GC_register_displacement(offset);
395 GC_register_displacement((word)sizeof(oh) + offset);
399 GC_PTR GC_debug_malloc(size_t lb, GC_EXTRA_PARAMS)
401 GC_PTR GC_debug_malloc(lb, s, i)
405 # ifdef GC_ADD_CALLER
406 --> GC_ADD_CALLER not implemented for K&R C
410 GC_PTR result = GC_malloc(lb + DEBUG_BYTES);
413 GC_err_printf1("GC_debug_malloc(%ld) returning NIL (",
416 GC_err_printf1(":%ld)\n", (unsigned long)i);
419 if (!GC_debugging_started) {
420 GC_start_debugging();
422 ADD_CALL_CHAIN(result, ra);
423 return (GC_store_debug_info(result, (word)lb, s, (word)i));
428 * An allocation function for internal use.
429 * Normally internally allocated objects do not have debug information.
430 * But in this case, we need to make sure that all objects have debug
432 * We assume debugging was started in collector initialization,
433 * and we already hold the GC lock.
435 GC_PTR GC_debug_generic_malloc_inner(size_t lb, int k)
437 GC_PTR result = GC_generic_malloc_inner(lb + DEBUG_BYTES, k);
440 GC_err_printf1("GC internal allocation (%ld bytes) returning NIL\n",
444 ADD_CALL_CHAIN(result, ra);
445 return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", (word)0));
448 GC_PTR GC_debug_generic_malloc_inner_ignore_off_page(size_t lb, int k)
450 GC_PTR result = GC_generic_malloc_inner_ignore_off_page(
451 lb + DEBUG_BYTES, k);
454 GC_err_printf1("GC internal allocation (%ld bytes) returning NIL\n",
458 ADD_CALL_CHAIN(result, ra);
459 return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", (word)0));
463 #ifdef STUBBORN_ALLOC
465 GC_PTR GC_debug_malloc_stubborn(size_t lb, GC_EXTRA_PARAMS)
467 GC_PTR GC_debug_malloc_stubborn(lb, s, i)
473 GC_PTR result = GC_malloc_stubborn(lb + DEBUG_BYTES);
476 GC_err_printf1("GC_debug_malloc(%ld) returning NIL (",
479 GC_err_printf1(":%ld)\n", (unsigned long)i);
482 if (!GC_debugging_started) {
483 GC_start_debugging();
485 ADD_CALL_CHAIN(result, ra);
486 return (GC_store_debug_info(result, (word)lb, s, (word)i));
489 void GC_debug_change_stubborn(p)
492 register GC_PTR q = GC_base(p);
496 GC_err_printf1("Bad argument: 0x%lx to GC_debug_change_stubborn\n",
498 ABORT("GC_debug_change_stubborn: bad arg");
501 if (hhdr -> hb_obj_kind != STUBBORN) {
502 GC_err_printf1("GC_debug_change_stubborn arg not stubborn: 0x%lx\n",
504 ABORT("GC_debug_change_stubborn: arg not stubborn");
506 GC_change_stubborn(q);
509 void GC_debug_end_stubborn_change(p)
512 register GC_PTR q = GC_base(p);
516 GC_err_printf1("Bad argument: 0x%lx to GC_debug_end_stubborn_change\n",
518 ABORT("GC_debug_end_stubborn_change: bad arg");
521 if (hhdr -> hb_obj_kind != STUBBORN) {
522 GC_err_printf1("debug_end_stubborn_change arg not stubborn: 0x%lx\n",
524 ABORT("GC_debug_end_stubborn_change: arg not stubborn");
526 GC_end_stubborn_change(q);
529 #else /* !STUBBORN_ALLOC */
532 GC_PTR GC_debug_malloc_stubborn(size_t lb, GC_EXTRA_PARAMS)
534 GC_PTR GC_debug_malloc_stubborn(lb, s, i)
540 return GC_debug_malloc(lb, OPT_RA s, i);
543 void GC_debug_change_stubborn(p)
548 void GC_debug_end_stubborn_change(p)
553 #endif /* !STUBBORN_ALLOC */
556 GC_PTR GC_debug_malloc_atomic(size_t lb, GC_EXTRA_PARAMS)
558 GC_PTR GC_debug_malloc_atomic(lb, s, i)
564 GC_PTR result = GC_malloc_atomic(lb + DEBUG_BYTES);
567 GC_err_printf1("GC_debug_malloc_atomic(%ld) returning NIL (",
570 GC_err_printf1(":%ld)\n", (unsigned long)i);
573 if (!GC_debugging_started) {
574 GC_start_debugging();
576 ADD_CALL_CHAIN(result, ra);
577 return (GC_store_debug_info(result, (word)lb, s, (word)i));
581 GC_PTR GC_debug_malloc_uncollectable(size_t lb, GC_EXTRA_PARAMS)
583 GC_PTR GC_debug_malloc_uncollectable(lb, s, i)
589 GC_PTR result = GC_malloc_uncollectable(lb + DEBUG_BYTES);
592 GC_err_printf1("GC_debug_malloc_uncollectable(%ld) returning NIL (",
595 GC_err_printf1(":%ld)\n", (unsigned long)i);
598 if (!GC_debugging_started) {
599 GC_start_debugging();
601 ADD_CALL_CHAIN(result, ra);
602 return (GC_store_debug_info(result, (word)lb, s, (word)i));
605 #ifdef ATOMIC_UNCOLLECTABLE
607 GC_PTR GC_debug_malloc_atomic_uncollectable(size_t lb, GC_EXTRA_PARAMS)
609 GC_PTR GC_debug_malloc_atomic_uncollectable(lb, s, i)
615 GC_PTR result = GC_malloc_atomic_uncollectable(lb + DEBUG_BYTES);
619 "GC_debug_malloc_atomic_uncollectable(%ld) returning NIL (",
622 GC_err_printf1(":%ld)\n", (unsigned long)i);
625 if (!GC_debugging_started) {
626 GC_start_debugging();
628 ADD_CALL_CHAIN(result, ra);
629 return (GC_store_debug_info(result, (word)lb, s, (word)i));
631 #endif /* ATOMIC_UNCOLLECTABLE */
634 void GC_debug_free(GC_PTR p)
636 void GC_debug_free(p)
640 register GC_PTR base;
641 register ptr_t clobbered;
646 GC_err_printf1("Attempt to free invalid pointer %lx\n",
648 ABORT("free(invalid pointer)");
650 if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
652 "GC_debug_free called on pointer %lx wo debugging info\n",
655 # ifndef SHORT_DBG_HDRS
656 clobbered = GC_check_annotated_obj((oh *)base);
657 if (clobbered != 0) {
658 if (((oh *)base) -> oh_sz == GC_size(base)) {
660 "GC_debug_free: found previously deallocated (?) object at ");
662 GC_err_printf0("GC_debug_free: found smashed location at ");
664 GC_print_smashed_obj(p, clobbered);
666 /* Invalidate size */
667 ((oh *)base) -> oh_sz = GC_size(base);
668 # endif /* SHORT_DBG_HDRS */
673 register hdr * hhdr = HDR(p);
674 GC_bool uncollectable = FALSE;
676 if (hhdr -> hb_obj_kind == UNCOLLECTABLE) {
677 uncollectable = TRUE;
679 # ifdef ATOMIC_UNCOLLECTABLE
680 if (hhdr -> hb_obj_kind == AUNCOLLECTABLE) {
681 uncollectable = TRUE;
684 if (uncollectable) GC_free(base);
685 } /* !GC_find_leak */
690 extern void GC_free_inner(GC_PTR p);
692 /* Used internally; we assume it's called correctly. */
693 void GC_debug_free_inner(GC_PTR p)
695 GC_free_inner(GC_base(p));
700 GC_PTR GC_debug_realloc(GC_PTR p, size_t lb, GC_EXTRA_PARAMS)
702 GC_PTR GC_debug_realloc(p, lb, s, i)
709 register GC_PTR base = GC_base(p);
710 register ptr_t clobbered;
711 register GC_PTR result;
712 register size_t copy_sz = lb;
713 register size_t old_sz;
716 if (p == 0) return(GC_debug_malloc(lb, OPT_RA s, i));
719 "Attempt to reallocate invalid pointer %lx\n", (unsigned long)p);
720 ABORT("realloc(invalid pointer)");
722 if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
724 "GC_debug_realloc called on pointer %lx wo debugging info\n",
726 return(GC_realloc(p, lb));
729 switch (hhdr -> hb_obj_kind) {
730 # ifdef STUBBORN_ALLOC
732 result = GC_debug_malloc_stubborn(lb, OPT_RA s, i);
736 result = GC_debug_malloc(lb, OPT_RA s, i);
739 result = GC_debug_malloc_atomic(lb, OPT_RA s, i);
742 result = GC_debug_malloc_uncollectable(lb, OPT_RA s, i);
744 # ifdef ATOMIC_UNCOLLECTABLE
746 result = GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i);
750 GC_err_printf0("GC_debug_realloc: encountered bad kind\n");
753 # ifdef SHORT_DBG_HDRS
754 old_sz = GC_size(base) - sizeof(oh);
756 clobbered = GC_check_annotated_obj((oh *)base);
757 if (clobbered != 0) {
758 GC_err_printf0("GC_debug_realloc: found smashed location at ");
759 GC_print_smashed_obj(p, clobbered);
761 old_sz = ((oh *)base) -> oh_sz;
763 if (old_sz < copy_sz) copy_sz = old_sz;
764 if (result == 0) return(0);
765 BCOPY(p, result, copy_sz);
770 #ifndef SHORT_DBG_HDRS
771 /* Check all marked objects in the given block for validity */
773 # if defined(__STDC__) || defined(__cplusplus)
774 void GC_check_heap_block(register struct hblk *hbp, word dummy)
776 void GC_check_heap_block(hbp, dummy)
777 register struct hblk *hbp; /* ptr to current heap block */
781 register struct hblkhdr * hhdr = HDR(hbp);
782 register word sz = hhdr -> hb_sz;
783 register int word_no;
784 register word *p, *plim;
786 p = (word *)(hbp->hb_body);
791 plim = (word *)((((word)hbp) + HBLKSIZE) - WORDS_TO_BYTES(sz));
793 /* go through all words in block */
795 if( mark_bit_from_hdr(hhdr, word_no)
796 && GC_HAS_DEBUG_INFO((ptr_t)p)) {
797 ptr_t clobbered = GC_check_annotated_obj((oh *)p);
799 if (clobbered != 0) {
801 "GC_check_heap_block: found smashed location at ");
802 GC_print_smashed_obj((ptr_t)p, clobbered);
811 /* This assumes that all accessible objects are marked, and that */
812 /* I hold the allocation lock. Normally called by collector. */
813 void GC_check_heap_proc()
815 # ifndef SMALL_CONFIG
816 if (sizeof(oh) & (2 * sizeof(word) - 1) != 0) {
817 ABORT("Alignment problem: object header has inappropriate size\n");
820 GC_apply_to_all_blocks(GC_check_heap_block, (word)0);
823 #endif /* !SHORT_DBG_HDRS */
826 GC_finalization_proc cl_fn;
831 void * GC_make_closure(GC_finalization_proc fn, void * data)
833 GC_PTR GC_make_closure(fn, data)
834 GC_finalization_proc fn;
838 struct closure * result =
840 (struct closure *) GC_debug_malloc(sizeof (struct closure),
843 (struct closure *) GC_malloc(sizeof (struct closure));
846 result -> cl_fn = fn;
847 result -> cl_data = data;
848 return((GC_PTR)result);
852 void GC_debug_invoke_finalizer(void * obj, void * data)
854 void GC_debug_invoke_finalizer(obj, data)
859 register struct closure * cl = (struct closure *) data;
861 (*(cl -> cl_fn))((GC_PTR)((char *)obj + sizeof(oh)), cl -> cl_data);
866 void GC_debug_register_finalizer(GC_PTR obj, GC_finalization_proc fn,
867 GC_PTR cd, GC_finalization_proc *ofn,
870 void GC_debug_register_finalizer(obj, fn, cd, ofn, ocd)
872 GC_finalization_proc fn;
874 GC_finalization_proc *ofn;
878 ptr_t base = GC_base(obj);
879 if (0 == base || (ptr_t)obj - base != sizeof(oh)) {
881 "GC_register_finalizer called with non-base-pointer 0x%lx\n",
884 GC_register_finalizer(base, GC_debug_invoke_finalizer,
885 GC_make_closure(fn,cd), ofn, ocd);
889 void GC_debug_register_finalizer_no_order
890 (GC_PTR obj, GC_finalization_proc fn,
891 GC_PTR cd, GC_finalization_proc *ofn,
894 void GC_debug_register_finalizer_no_order
895 (obj, fn, cd, ofn, ocd)
897 GC_finalization_proc fn;
899 GC_finalization_proc *ofn;
903 ptr_t base = GC_base(obj);
904 if (0 == base || (ptr_t)obj - base != sizeof(oh)) {
906 "GC_register_finalizer_no_order called with non-base-pointer 0x%lx\n",
909 GC_register_finalizer_no_order(base, GC_debug_invoke_finalizer,
910 GC_make_closure(fn,cd), ofn, ocd);
914 void GC_debug_register_finalizer_ignore_self
915 (GC_PTR obj, GC_finalization_proc fn,
916 GC_PTR cd, GC_finalization_proc *ofn,
919 void GC_debug_register_finalizer_ignore_self
920 (obj, fn, cd, ofn, ocd)
922 GC_finalization_proc fn;
924 GC_finalization_proc *ofn;
928 ptr_t base = GC_base(obj);
929 if (0 == base || (ptr_t)obj - base != sizeof(oh)) {
931 "GC_register_finalizer_ignore_self called with non-base-pointer 0x%lx\n",
934 GC_register_finalizer_ignore_self(base, GC_debug_invoke_finalizer,
935 GC_make_closure(fn,cd), ofn, ocd);
939 # define RA GC_RETURN_ADDR,
944 GC_PTR GC_debug_malloc_replacement(lb)
947 return GC_debug_malloc(lb, RA "unknown", 0);
950 GC_PTR GC_debug_realloc_replacement(p, lb)
954 return GC_debug_realloc(p, lb, RA "unknown", 0);