1195 lines
39 KiB
C
1195 lines
39 KiB
C
/*
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* Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
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* Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved.
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* Copyright (c) 1997 by Silicon Graphics. All rights reserved.
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* Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P.
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* Copyright (C) 2007 Free Software Foundation, Inc
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*
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* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
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* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
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*
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* Permission is hereby granted to use or copy this program
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* for any purpose, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*/
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#include "private/dbg_mlc.h"
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#ifndef MSWINCE
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# include <errno.h>
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#endif
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#include <string.h>
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#ifndef SHORT_DBG_HDRS
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/* Check whether object with base pointer p has debugging info. */
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/* p is assumed to point to a legitimate object in our part */
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/* of the heap. */
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/* This excludes the check as to whether the back pointer is */
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/* odd, which is added by the GC_HAS_DEBUG_INFO macro. */
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/* Note that if DBG_HDRS_ALL is set, uncollectible objects */
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/* on free lists may not have debug information set. Thus it's */
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/* not always safe to return TRUE (1), even if the client does */
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/* its part. Return -1 if the object with debug info has been */
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/* marked as deallocated. */
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GC_INNER int GC_has_other_debug_info(ptr_t p)
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{
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ptr_t body = (ptr_t)((oh *)p + 1);
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word sz = GC_size(p);
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if (HBLKPTR(p) != HBLKPTR((ptr_t)body)
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|| sz < DEBUG_BYTES + EXTRA_BYTES) {
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return 0;
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}
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if (((oh *)p) -> oh_sf != (START_FLAG ^ (word)body)
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&& ((word *)p)[BYTES_TO_WORDS(sz)-1] != (END_FLAG ^ (word)body)) {
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return 0;
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}
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if (((oh *)p)->oh_sz == sz) {
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/* Object may have had debug info, but has been deallocated */
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return -1;
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}
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return 1;
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}
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#endif /* !SHORT_DBG_HDRS */
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#ifdef LINT2
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long GC_random(void)
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{
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static unsigned seed = 1; /* not thread-safe */
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/* Linear congruential pseudo-random numbers generator. */
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seed = (seed * 1103515245U + 12345) & GC_RAND_MAX; /* overflow is ok */
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return (long)seed;
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}
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#endif
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#ifdef KEEP_BACK_PTRS
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#ifdef LINT2
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# define RANDOM() GC_random()
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#else
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# include <stdlib.h>
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# define GC_RAND_MAX RAND_MAX
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# if defined(__GLIBC__) || defined(SOLARIS) \
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|| defined(HPUX) || defined(IRIX5) || defined(OSF1)
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# define RANDOM() random()
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# else
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# define RANDOM() (long)rand()
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# endif
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#endif /* !LINT2 */
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/* Store back pointer to source in dest, if that appears to be possible. */
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/* This is not completely safe, since we may mistakenly conclude that */
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/* dest has a debugging wrapper. But the error probability is very */
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/* small, and this shouldn't be used in production code. */
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/* We assume that dest is the real base pointer. Source will usually */
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/* be a pointer to the interior of an object. */
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GC_INNER void GC_store_back_pointer(ptr_t source, ptr_t dest)
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{
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if (GC_HAS_DEBUG_INFO(dest)) {
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# ifdef PARALLEL_MARK
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AO_store((volatile AO_t *)&((oh *)dest)->oh_back_ptr,
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(AO_t)HIDE_BACK_PTR(source));
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# else
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((oh *)dest) -> oh_back_ptr = HIDE_BACK_PTR(source);
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# endif
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}
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}
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GC_INNER void GC_marked_for_finalization(ptr_t dest)
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{
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GC_store_back_pointer(MARKED_FOR_FINALIZATION, dest);
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}
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/* Store information about the object referencing dest in *base_p */
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/* and *offset_p. */
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/* source is root ==> *base_p = address, *offset_p = 0 */
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/* source is heap object ==> *base_p != 0, *offset_p = offset */
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/* Returns 1 on success, 0 if source couldn't be determined. */
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/* Dest can be any address within a heap object. */
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GC_API GC_ref_kind GC_CALL GC_get_back_ptr_info(void *dest, void **base_p,
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size_t *offset_p)
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{
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oh * hdr = (oh *)GC_base(dest);
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ptr_t bp;
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ptr_t bp_base;
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# ifdef LINT2
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/* Explicitly instruct the code analysis tool that */
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/* GC_get_back_ptr_info is not expected to be called with an */
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/* incorrect "dest" value. */
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if (!hdr) ABORT("Invalid GC_get_back_ptr_info argument");
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# endif
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if (!GC_HAS_DEBUG_INFO((ptr_t) hdr)) return GC_NO_SPACE;
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bp = (ptr_t)GC_REVEAL_POINTER(hdr -> oh_back_ptr);
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if (MARKED_FOR_FINALIZATION == bp) return GC_FINALIZER_REFD;
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if (MARKED_FROM_REGISTER == bp) return GC_REFD_FROM_REG;
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if (NOT_MARKED == bp) return GC_UNREFERENCED;
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# if ALIGNMENT == 1
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/* Heuristically try to fix off by 1 errors we introduced by */
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/* insisting on even addresses. */
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{
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ptr_t alternate_ptr = bp + 1;
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ptr_t target = *(ptr_t *)bp;
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ptr_t alternate_target = *(ptr_t *)alternate_ptr;
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if ((word)alternate_target >= (word)GC_least_plausible_heap_addr
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&& (word)alternate_target <= (word)GC_greatest_plausible_heap_addr
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&& ((word)target < (word)GC_least_plausible_heap_addr
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|| (word)target > (word)GC_greatest_plausible_heap_addr)) {
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bp = alternate_ptr;
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}
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}
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# endif
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bp_base = (ptr_t)GC_base(bp);
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if (NULL == bp_base) {
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*base_p = bp;
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*offset_p = 0;
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return GC_REFD_FROM_ROOT;
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} else {
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if (GC_HAS_DEBUG_INFO(bp_base)) bp_base += sizeof(oh);
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*base_p = bp_base;
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*offset_p = bp - bp_base;
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return GC_REFD_FROM_HEAP;
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}
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}
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/* Generate a random heap address. */
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/* The resulting address is in the heap, but */
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/* not necessarily inside a valid object. */
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GC_API void * GC_CALL GC_generate_random_heap_address(void)
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{
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size_t i;
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word heap_offset = RANDOM();
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if (GC_heapsize > GC_RAND_MAX) {
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heap_offset *= GC_RAND_MAX;
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heap_offset += RANDOM();
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}
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heap_offset %= GC_heapsize;
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/* This doesn't yield a uniform distribution, especially if */
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/* e.g. RAND_MAX = 1.5* GC_heapsize. But for typical cases, */
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/* it's not too bad. */
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for (i = 0;; ++i) {
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size_t size;
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if (i >= GC_n_heap_sects)
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ABORT("GC_generate_random_heap_address: size inconsistency");
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size = GC_heap_sects[i].hs_bytes;
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if (heap_offset < size) {
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break;
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} else {
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heap_offset -= size;
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}
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}
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return GC_heap_sects[i].hs_start + heap_offset;
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}
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/* Generate a random address inside a valid marked heap object. */
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GC_API void * GC_CALL GC_generate_random_valid_address(void)
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{
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ptr_t result;
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ptr_t base;
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do {
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result = (ptr_t)GC_generate_random_heap_address();
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base = (ptr_t)GC_base(result);
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} while (NULL == base || !GC_is_marked(base));
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return result;
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}
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/* Print back trace for p */
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GC_API void GC_CALL GC_print_backtrace(void *p)
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{
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void *current = p;
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int i;
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GC_ref_kind source;
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size_t offset;
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void *base;
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GC_print_heap_obj((ptr_t)GC_base(current));
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for (i = 0; ; ++i) {
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source = GC_get_back_ptr_info(current, &base, &offset);
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if (GC_UNREFERENCED == source) {
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GC_err_printf("Reference could not be found\n");
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goto out;
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}
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if (GC_NO_SPACE == source) {
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GC_err_printf("No debug info in object: Can't find reference\n");
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goto out;
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}
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GC_err_printf("Reachable via %d levels of pointers from ", i);
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switch(source) {
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case GC_REFD_FROM_ROOT:
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GC_err_printf("root at %p\n\n", base);
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goto out;
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case GC_REFD_FROM_REG:
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GC_err_printf("root in register\n\n");
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goto out;
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case GC_FINALIZER_REFD:
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GC_err_printf("list of finalizable objects\n\n");
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goto out;
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case GC_REFD_FROM_HEAP:
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GC_err_printf("offset %ld in object:\n", (long)offset);
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/* Take GC_base(base) to get real base, i.e. header. */
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GC_print_heap_obj((ptr_t)GC_base(base));
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break;
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default:
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GC_err_printf("INTERNAL ERROR: UNEXPECTED SOURCE!!!!\n");
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goto out;
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}
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current = base;
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}
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out:;
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}
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/* Force a garbage collection and generate/print a backtrace */
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/* from a random heap address. */
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GC_INNER void GC_generate_random_backtrace_no_gc(void)
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{
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void * current;
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current = GC_generate_random_valid_address();
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GC_printf("\n****Chosen address %p in object\n", current);
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GC_print_backtrace(current);
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}
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GC_API void GC_CALL GC_generate_random_backtrace(void)
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{
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if (GC_try_to_collect(GC_never_stop_func) == 0) {
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GC_err_printf("Cannot generate a backtrace: "
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"garbage collection is disabled!\n");
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return;
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}
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GC_generate_random_backtrace_no_gc();
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}
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#endif /* KEEP_BACK_PTRS */
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# define CROSSES_HBLK(p, sz) \
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(((word)((p) + sizeof(oh) + (sz) - 1) ^ (word)(p)) >= HBLKSIZE)
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GC_INNER void *GC_store_debug_info_inner(void *p, word sz GC_ATTR_UNUSED,
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const char *string, int linenum)
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{
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word * result = (word *)((oh *)p + 1);
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GC_ASSERT(I_HOLD_LOCK());
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GC_ASSERT(GC_size(p) >= sizeof(oh) + sz);
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GC_ASSERT(!(SMALL_OBJ(sz) && CROSSES_HBLK((ptr_t)p, sz)));
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# ifdef KEEP_BACK_PTRS
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((oh *)p) -> oh_back_ptr = HIDE_BACK_PTR(NOT_MARKED);
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# endif
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# ifdef MAKE_BACK_GRAPH
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((oh *)p) -> oh_bg_ptr = HIDE_BACK_PTR((ptr_t)0);
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# endif
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((oh *)p) -> oh_string = string;
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((oh *)p) -> oh_int = (word)linenum;
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# ifndef SHORT_DBG_HDRS
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((oh *)p) -> oh_sz = sz;
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((oh *)p) -> oh_sf = START_FLAG ^ (word)result;
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((word *)p)[BYTES_TO_WORDS(GC_size(p))-1] =
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result[SIMPLE_ROUNDED_UP_WORDS(sz)] = END_FLAG ^ (word)result;
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# endif
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return result;
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}
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/* Check the allocation is successful, store debugging info into p, */
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/* start the debugging mode (if not yet), and return displaced pointer. */
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static void *store_debug_info(void *p, size_t lb,
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const char *fn, GC_EXTRA_PARAMS)
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{
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void *result;
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DCL_LOCK_STATE;
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if (NULL == p) {
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GC_err_printf("%s(%lu) returning NULL (%s:%d)\n",
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fn, (unsigned long)lb, s, i);
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return NULL;
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}
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LOCK();
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if (!GC_debugging_started)
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GC_start_debugging_inner();
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ADD_CALL_CHAIN(p, ra);
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result = GC_store_debug_info_inner(p, (word)lb, s, i);
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UNLOCK();
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return result;
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}
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#ifndef SHORT_DBG_HDRS
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/* Check the object with debugging info at ohdr. */
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/* Return NULL if it's OK. Else return clobbered */
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/* address. */
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STATIC ptr_t GC_check_annotated_obj(oh *ohdr)
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{
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ptr_t body = (ptr_t)(ohdr + 1);
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word gc_sz = GC_size((ptr_t)ohdr);
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if (ohdr -> oh_sz + DEBUG_BYTES > gc_sz) {
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return((ptr_t)(&(ohdr -> oh_sz)));
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}
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if (ohdr -> oh_sf != (START_FLAG ^ (word)body)) {
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return((ptr_t)(&(ohdr -> oh_sf)));
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}
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if (((word *)ohdr)[BYTES_TO_WORDS(gc_sz)-1] != (END_FLAG ^ (word)body)) {
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return((ptr_t)((word *)ohdr + BYTES_TO_WORDS(gc_sz)-1));
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}
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if (((word *)body)[SIMPLE_ROUNDED_UP_WORDS(ohdr -> oh_sz)]
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!= (END_FLAG ^ (word)body)) {
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return((ptr_t)((word *)body + SIMPLE_ROUNDED_UP_WORDS(ohdr->oh_sz)));
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}
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return(0);
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}
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#endif /* !SHORT_DBG_HDRS */
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STATIC GC_describe_type_fn GC_describe_type_fns[MAXOBJKINDS] = {0};
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GC_API void GC_CALL GC_register_describe_type_fn(int kind,
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GC_describe_type_fn fn)
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{
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GC_describe_type_fns[kind] = fn;
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}
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#define GET_OH_LINENUM(ohdr) ((int)(ohdr)->oh_int)
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#ifndef SHORT_DBG_HDRS
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# define IF_NOT_SHORTDBG_HDRS(x) x
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# define COMMA_IFNOT_SHORTDBG_HDRS(x) /* comma */, x
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#else
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# define IF_NOT_SHORTDBG_HDRS(x) /* empty */
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# define COMMA_IFNOT_SHORTDBG_HDRS(x) /* empty */
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#endif
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/* Print a human-readable description of the object to stderr. */
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/* p points to somewhere inside an object with the debugging info. */
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STATIC void GC_print_obj(ptr_t p)
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{
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oh * ohdr = (oh *)GC_base(p);
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ptr_t q;
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hdr * hhdr;
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int kind;
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const char *kind_str;
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char buffer[GC_TYPE_DESCR_LEN + 1];
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GC_ASSERT(I_DONT_HOLD_LOCK());
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# ifdef LINT2
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if (!ohdr) ABORT("Invalid GC_print_obj argument");
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# endif
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q = (ptr_t)(ohdr + 1);
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/* Print a type description for the object whose client-visible */
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/* address is q. */
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hhdr = GC_find_header(q);
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kind = hhdr -> hb_obj_kind;
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if (0 != GC_describe_type_fns[kind] && GC_is_marked(ohdr)) {
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/* This should preclude free list objects except with */
|
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/* thread-local allocation. */
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buffer[GC_TYPE_DESCR_LEN] = 0;
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(GC_describe_type_fns[kind])(q, buffer);
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GC_ASSERT(buffer[GC_TYPE_DESCR_LEN] == 0);
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kind_str = buffer;
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} else {
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switch(kind) {
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case PTRFREE:
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kind_str = "PTRFREE";
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break;
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case NORMAL:
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kind_str = "NORMAL";
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break;
|
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case UNCOLLECTABLE:
|
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kind_str = "UNCOLLECTABLE";
|
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break;
|
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# ifdef GC_ATOMIC_UNCOLLECTABLE
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case AUNCOLLECTABLE:
|
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kind_str = "ATOMIC_UNCOLLECTABLE";
|
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break;
|
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# endif
|
|
default:
|
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kind_str = NULL;
|
|
/* The alternative is to use snprintf(buffer) but it is */
|
|
/* not quite portable (see vsnprintf in misc.c). */
|
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}
|
|
}
|
|
|
|
if (NULL != kind_str) {
|
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GC_err_printf("%p (%s:%d," IF_NOT_SHORTDBG_HDRS(" sz=%lu,") " %s)\n",
|
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(void *)((ptr_t)ohdr + sizeof(oh)),
|
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ohdr->oh_string, GET_OH_LINENUM(ohdr) /*, */
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COMMA_IFNOT_SHORTDBG_HDRS((unsigned long)ohdr->oh_sz),
|
|
kind_str);
|
|
} else {
|
|
GC_err_printf("%p (%s:%d," IF_NOT_SHORTDBG_HDRS(" sz=%lu,")
|
|
" kind=%d descr=0x%lx)\n",
|
|
(void *)((ptr_t)ohdr + sizeof(oh)),
|
|
ohdr->oh_string, GET_OH_LINENUM(ohdr) /*, */
|
|
COMMA_IFNOT_SHORTDBG_HDRS((unsigned long)ohdr->oh_sz),
|
|
kind, (unsigned long)hhdr->hb_descr);
|
|
}
|
|
PRINT_CALL_CHAIN(ohdr);
|
|
}
|
|
|
|
STATIC void GC_debug_print_heap_obj_proc(ptr_t p)
|
|
{
|
|
GC_ASSERT(I_DONT_HOLD_LOCK());
|
|
if (GC_HAS_DEBUG_INFO(p)) {
|
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GC_print_obj(p);
|
|
} else {
|
|
GC_default_print_heap_obj_proc(p);
|
|
}
|
|
}
|
|
|
|
#ifndef SHORT_DBG_HDRS
|
|
/* Use GC_err_printf and friends to print a description of the object */
|
|
/* whose client-visible address is p, and which was smashed at */
|
|
/* clobbered_addr. */
|
|
STATIC void GC_print_smashed_obj(const char *msg, void *p,
|
|
ptr_t clobbered_addr)
|
|
{
|
|
oh * ohdr = (oh *)GC_base(p);
|
|
|
|
GC_ASSERT(I_DONT_HOLD_LOCK());
|
|
# ifdef LINT2
|
|
if (!ohdr) ABORT("Invalid GC_print_smashed_obj argument");
|
|
# endif
|
|
if ((word)clobbered_addr <= (word)(&ohdr->oh_sz)
|
|
|| ohdr -> oh_string == 0) {
|
|
GC_err_printf(
|
|
"%s %p in or near object at %p(<smashed>, appr. sz = %lu)\n",
|
|
msg, (void *)clobbered_addr, p,
|
|
(unsigned long)(GC_size((ptr_t)ohdr) - DEBUG_BYTES));
|
|
} else {
|
|
GC_err_printf("%s %p in or near object at %p (%s:%d, sz=%lu)\n",
|
|
msg, (void *)clobbered_addr, p,
|
|
(word)(ohdr -> oh_string) < HBLKSIZE ? "(smashed string)" :
|
|
ohdr -> oh_string[0] == '\0' ? "EMPTY(smashed?)" :
|
|
ohdr -> oh_string,
|
|
GET_OH_LINENUM(ohdr), (unsigned long)(ohdr -> oh_sz));
|
|
PRINT_CALL_CHAIN(ohdr);
|
|
}
|
|
}
|
|
|
|
STATIC void GC_check_heap_proc (void);
|
|
STATIC void GC_print_all_smashed_proc (void);
|
|
#else
|
|
STATIC void GC_do_nothing(void) {}
|
|
#endif
|
|
|
|
GC_INNER void GC_start_debugging_inner(void)
|
|
{
|
|
GC_ASSERT(I_HOLD_LOCK());
|
|
# ifndef SHORT_DBG_HDRS
|
|
GC_check_heap = GC_check_heap_proc;
|
|
GC_print_all_smashed = GC_print_all_smashed_proc;
|
|
# else
|
|
GC_check_heap = GC_do_nothing;
|
|
GC_print_all_smashed = GC_do_nothing;
|
|
# endif
|
|
GC_print_heap_obj = GC_debug_print_heap_obj_proc;
|
|
GC_debugging_started = TRUE;
|
|
GC_register_displacement_inner((word)sizeof(oh));
|
|
}
|
|
|
|
size_t GC_debug_header_size = sizeof(oh);
|
|
|
|
GC_API void GC_CALL GC_debug_register_displacement(size_t offset)
|
|
{
|
|
DCL_LOCK_STATE;
|
|
|
|
LOCK();
|
|
GC_register_displacement_inner(offset);
|
|
GC_register_displacement_inner((word)sizeof(oh) + offset);
|
|
UNLOCK();
|
|
}
|
|
|
|
#ifdef GC_ADD_CALLER
|
|
# if defined(HAVE_DLADDR) && defined(GC_HAVE_RETURN_ADDR_PARENT)
|
|
# include <dlfcn.h>
|
|
|
|
STATIC void GC_caller_func_offset(word ad, const char **symp, int *offp)
|
|
{
|
|
Dl_info caller;
|
|
|
|
if (ad && dladdr((void *)ad, &caller) && caller.dli_sname != NULL) {
|
|
*symp = caller.dli_sname;
|
|
*offp = (int)((char *)ad - (char *)caller.dli_saddr);
|
|
}
|
|
if (NULL == *symp) {
|
|
*symp = "unknown";
|
|
}
|
|
}
|
|
# else
|
|
# define GC_caller_func_offset(ad, symp, offp) (void)(*(symp) = "unknown")
|
|
# endif
|
|
#endif /* GC_ADD_CALLER */
|
|
|
|
GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_malloc(size_t lb,
|
|
GC_EXTRA_PARAMS)
|
|
{
|
|
void * result;
|
|
|
|
/* Note that according to malloc() specification, if size is 0 then */
|
|
/* malloc() returns either NULL, or a unique pointer value that can */
|
|
/* later be successfully passed to free(). We always do the latter. */
|
|
result = GC_malloc(SIZET_SAT_ADD(lb, DEBUG_BYTES));
|
|
# ifdef GC_ADD_CALLER
|
|
if (s == NULL) {
|
|
GC_caller_func_offset(ra, &s, &i);
|
|
}
|
|
# endif
|
|
return store_debug_info(result, lb, "GC_debug_malloc", OPT_RA s, i);
|
|
}
|
|
|
|
GC_API GC_ATTR_MALLOC void * GC_CALL
|
|
GC_debug_malloc_ignore_off_page(size_t lb, GC_EXTRA_PARAMS)
|
|
{
|
|
void * result = GC_malloc_ignore_off_page(SIZET_SAT_ADD(lb, DEBUG_BYTES));
|
|
|
|
return store_debug_info(result, lb, "GC_debug_malloc_ignore_off_page",
|
|
OPT_RA s, i);
|
|
}
|
|
|
|
GC_API GC_ATTR_MALLOC void * GC_CALL
|
|
GC_debug_malloc_atomic_ignore_off_page(size_t lb, GC_EXTRA_PARAMS)
|
|
{
|
|
void * result = GC_malloc_atomic_ignore_off_page(
|
|
SIZET_SAT_ADD(lb, DEBUG_BYTES));
|
|
|
|
return store_debug_info(result, lb,
|
|
"GC_debug_malloc_atomic_ignore_off_page",
|
|
OPT_RA s, i);
|
|
}
|
|
|
|
STATIC void * GC_debug_generic_malloc(size_t lb, int knd, GC_EXTRA_PARAMS)
|
|
{
|
|
void * result = GC_generic_malloc(SIZET_SAT_ADD(lb, DEBUG_BYTES), knd);
|
|
|
|
return store_debug_info(result, lb, "GC_debug_generic_malloc",
|
|
OPT_RA s, i);
|
|
}
|
|
|
|
#ifdef DBG_HDRS_ALL
|
|
/* An allocation function for internal use. Normally internally */
|
|
/* allocated objects do not have debug information. But in this */
|
|
/* case, we need to make sure that all objects have debug headers. */
|
|
GC_INNER void * GC_debug_generic_malloc_inner(size_t lb, int k)
|
|
{
|
|
void * result;
|
|
|
|
GC_ASSERT(I_HOLD_LOCK());
|
|
result = GC_generic_malloc_inner(SIZET_SAT_ADD(lb, DEBUG_BYTES), k);
|
|
if (NULL == result) {
|
|
GC_err_printf("GC internal allocation (%lu bytes) returning NULL\n",
|
|
(unsigned long) lb);
|
|
return(0);
|
|
}
|
|
if (!GC_debugging_started) {
|
|
GC_start_debugging_inner();
|
|
}
|
|
ADD_CALL_CHAIN(result, GC_RETURN_ADDR);
|
|
return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", 0));
|
|
}
|
|
|
|
GC_INNER void * GC_debug_generic_malloc_inner_ignore_off_page(size_t lb,
|
|
int k)
|
|
{
|
|
void * result;
|
|
|
|
GC_ASSERT(I_HOLD_LOCK());
|
|
result = GC_generic_malloc_inner_ignore_off_page(
|
|
SIZET_SAT_ADD(lb, DEBUG_BYTES), k);
|
|
if (NULL == result) {
|
|
GC_err_printf("GC internal allocation (%lu bytes) returning NULL\n",
|
|
(unsigned long) lb);
|
|
return(0);
|
|
}
|
|
if (!GC_debugging_started) {
|
|
GC_start_debugging_inner();
|
|
}
|
|
ADD_CALL_CHAIN(result, GC_RETURN_ADDR);
|
|
return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", 0));
|
|
}
|
|
#endif /* DBG_HDRS_ALL */
|
|
|
|
GC_API void * GC_CALL GC_debug_malloc_stubborn(size_t lb, GC_EXTRA_PARAMS)
|
|
{
|
|
return GC_debug_malloc(lb, OPT_RA s, i);
|
|
}
|
|
|
|
GC_API void GC_CALL GC_debug_change_stubborn(
|
|
const void * p GC_ATTR_UNUSED) {}
|
|
|
|
GC_API void GC_CALL GC_debug_end_stubborn_change(const void *p)
|
|
{
|
|
const void * q = GC_base_C(p);
|
|
|
|
if (NULL == q) {
|
|
ABORT_ARG1("GC_debug_end_stubborn_change: bad arg", ": %p", p);
|
|
}
|
|
GC_end_stubborn_change(q);
|
|
}
|
|
|
|
GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_malloc_atomic(size_t lb,
|
|
GC_EXTRA_PARAMS)
|
|
{
|
|
void * result = GC_malloc_atomic(SIZET_SAT_ADD(lb, DEBUG_BYTES));
|
|
|
|
return store_debug_info(result, lb, "GC_debug_malloc_atomic",
|
|
OPT_RA s, i);
|
|
}
|
|
|
|
GC_API GC_ATTR_MALLOC char * GC_CALL GC_debug_strdup(const char *str,
|
|
GC_EXTRA_PARAMS)
|
|
{
|
|
char *copy;
|
|
size_t lb;
|
|
if (str == NULL) {
|
|
if (GC_find_leak)
|
|
GC_err_printf("strdup(NULL) behavior is undefined\n");
|
|
return NULL;
|
|
}
|
|
|
|
lb = strlen(str) + 1;
|
|
copy = (char *)GC_debug_malloc_atomic(lb, OPT_RA s, i);
|
|
if (copy == NULL) {
|
|
# ifndef MSWINCE
|
|
errno = ENOMEM;
|
|
# endif
|
|
return NULL;
|
|
}
|
|
BCOPY(str, copy, lb);
|
|
return copy;
|
|
}
|
|
|
|
GC_API GC_ATTR_MALLOC char * GC_CALL GC_debug_strndup(const char *str,
|
|
size_t size, GC_EXTRA_PARAMS)
|
|
{
|
|
char *copy;
|
|
size_t len = strlen(str); /* str is expected to be non-NULL */
|
|
if (len > size)
|
|
len = size;
|
|
copy = (char *)GC_debug_malloc_atomic(len + 1, OPT_RA s, i);
|
|
if (copy == NULL) {
|
|
# ifndef MSWINCE
|
|
errno = ENOMEM;
|
|
# endif
|
|
return NULL;
|
|
}
|
|
if (len > 0)
|
|
BCOPY(str, copy, len);
|
|
copy[len] = '\0';
|
|
return copy;
|
|
}
|
|
|
|
#ifdef GC_REQUIRE_WCSDUP
|
|
# include <wchar.h> /* for wcslen() */
|
|
|
|
GC_API GC_ATTR_MALLOC wchar_t * GC_CALL GC_debug_wcsdup(const wchar_t *str,
|
|
GC_EXTRA_PARAMS)
|
|
{
|
|
size_t lb = (wcslen(str) + 1) * sizeof(wchar_t);
|
|
wchar_t *copy = (wchar_t *)GC_debug_malloc_atomic(lb, OPT_RA s, i);
|
|
if (copy == NULL) {
|
|
# ifndef MSWINCE
|
|
errno = ENOMEM;
|
|
# endif
|
|
return NULL;
|
|
}
|
|
BCOPY(str, copy, lb);
|
|
return copy;
|
|
}
|
|
#endif /* GC_REQUIRE_WCSDUP */
|
|
|
|
GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_malloc_uncollectable(size_t lb,
|
|
GC_EXTRA_PARAMS)
|
|
{
|
|
void * result = GC_malloc_uncollectable(
|
|
SIZET_SAT_ADD(lb, UNCOLLECTABLE_DEBUG_BYTES));
|
|
|
|
return store_debug_info(result, lb, "GC_debug_malloc_uncollectable",
|
|
OPT_RA s, i);
|
|
}
|
|
|
|
#ifdef GC_ATOMIC_UNCOLLECTABLE
|
|
GC_API GC_ATTR_MALLOC void * GC_CALL
|
|
GC_debug_malloc_atomic_uncollectable(size_t lb, GC_EXTRA_PARAMS)
|
|
{
|
|
void * result = GC_malloc_atomic_uncollectable(
|
|
SIZET_SAT_ADD(lb, UNCOLLECTABLE_DEBUG_BYTES));
|
|
|
|
return store_debug_info(result, lb,
|
|
"GC_debug_malloc_atomic_uncollectable",
|
|
OPT_RA s, i);
|
|
}
|
|
#endif /* GC_ATOMIC_UNCOLLECTABLE */
|
|
|
|
#ifndef GC_FREED_MEM_MARKER
|
|
# if CPP_WORDSZ == 32
|
|
# define GC_FREED_MEM_MARKER 0xdeadbeef
|
|
# else
|
|
# define GC_FREED_MEM_MARKER GC_WORD_C(0xEFBEADDEdeadbeef)
|
|
# endif
|
|
#endif
|
|
|
|
GC_API void GC_CALL GC_debug_free(void * p)
|
|
{
|
|
ptr_t base;
|
|
if (0 == p) return;
|
|
|
|
base = (ptr_t)GC_base(p);
|
|
if (NULL == base) {
|
|
# if defined(REDIRECT_MALLOC) \
|
|
&& ((defined(NEED_CALLINFO) && defined(GC_HAVE_BUILTIN_BACKTRACE)) \
|
|
|| defined(GC_LINUX_THREADS) || defined(GC_SOLARIS_THREADS) \
|
|
|| defined(MSWIN32))
|
|
/* In some cases, we should ignore objects that do not belong */
|
|
/* to the GC heap. See the comment in GC_free. */
|
|
if (!GC_is_heap_ptr(p)) return;
|
|
# endif
|
|
ABORT_ARG1("Invalid pointer passed to free()", ": %p", p);
|
|
}
|
|
if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
|
|
# if defined(REDIRECT_FREE) && defined(USE_PROC_FOR_LIBRARIES)
|
|
/* TODO: Suppress the warning if free() caller is in libpthread */
|
|
/* or libdl. */
|
|
# endif
|
|
GC_err_printf(
|
|
"GC_debug_free called on pointer %p w/o debugging info\n", p);
|
|
} else {
|
|
# ifndef SHORT_DBG_HDRS
|
|
ptr_t clobbered = GC_check_annotated_obj((oh *)base);
|
|
word sz = GC_size(base);
|
|
if (clobbered != 0) {
|
|
GC_have_errors = TRUE;
|
|
if (((oh *)base) -> oh_sz == sz) {
|
|
GC_print_smashed_obj(
|
|
"GC_debug_free: found previously deallocated (?) object at",
|
|
p, clobbered);
|
|
return; /* ignore double free */
|
|
} else {
|
|
GC_print_smashed_obj("GC_debug_free: found smashed location at",
|
|
p, clobbered);
|
|
}
|
|
}
|
|
/* Invalidate size (mark the object as deallocated) */
|
|
((oh *)base) -> oh_sz = sz;
|
|
# endif /* SHORT_DBG_HDRS */
|
|
}
|
|
if (GC_find_leak
|
|
# ifndef SHORT_DBG_HDRS
|
|
&& ((ptr_t)p - (ptr_t)base != sizeof(oh) || !GC_findleak_delay_free)
|
|
# endif
|
|
) {
|
|
GC_free(base);
|
|
} else {
|
|
hdr * hhdr = HDR(p);
|
|
if (hhdr -> hb_obj_kind == UNCOLLECTABLE
|
|
# ifdef GC_ATOMIC_UNCOLLECTABLE
|
|
|| hhdr -> hb_obj_kind == AUNCOLLECTABLE
|
|
# endif
|
|
) {
|
|
GC_free(base);
|
|
} else {
|
|
word i;
|
|
word obj_sz = BYTES_TO_WORDS(hhdr->hb_sz - sizeof(oh));
|
|
|
|
for (i = 0; i < obj_sz; ++i)
|
|
((word *)p)[i] = GC_FREED_MEM_MARKER;
|
|
GC_ASSERT((word *)p + i == (word *)(base + hhdr -> hb_sz));
|
|
}
|
|
} /* !GC_find_leak */
|
|
}
|
|
|
|
#if defined(THREADS) && defined(DBG_HDRS_ALL)
|
|
/* Used internally; we assume it's called correctly. */
|
|
GC_INNER void GC_debug_free_inner(void * p)
|
|
{
|
|
ptr_t base = (ptr_t)GC_base(p);
|
|
GC_ASSERT((ptr_t)p - (ptr_t)base == sizeof(oh));
|
|
# ifdef LINT2
|
|
if (!base) ABORT("Invalid GC_debug_free_inner argument");
|
|
# endif
|
|
# ifndef SHORT_DBG_HDRS
|
|
/* Invalidate size */
|
|
((oh *)base) -> oh_sz = GC_size(base);
|
|
# endif
|
|
GC_free_inner(base);
|
|
}
|
|
#endif
|
|
|
|
GC_API void * GC_CALL GC_debug_realloc(void * p, size_t lb, GC_EXTRA_PARAMS)
|
|
{
|
|
void * base;
|
|
void * result;
|
|
hdr * hhdr;
|
|
|
|
if (p == 0) {
|
|
return GC_debug_malloc(lb, OPT_RA s, i);
|
|
}
|
|
if (0 == lb) /* and p != NULL */ {
|
|
GC_debug_free(p);
|
|
return NULL;
|
|
}
|
|
|
|
# ifdef GC_ADD_CALLER
|
|
if (s == NULL) {
|
|
GC_caller_func_offset(ra, &s, &i);
|
|
}
|
|
# endif
|
|
base = GC_base(p);
|
|
if (base == 0) {
|
|
ABORT_ARG1("Invalid pointer passed to realloc()", ": %p", p);
|
|
}
|
|
if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
|
|
GC_err_printf(
|
|
"GC_debug_realloc called on pointer %p w/o debugging info\n", p);
|
|
return(GC_realloc(p, lb));
|
|
}
|
|
hhdr = HDR(base);
|
|
switch (hhdr -> hb_obj_kind) {
|
|
case NORMAL:
|
|
result = GC_debug_malloc(lb, OPT_RA s, i);
|
|
break;
|
|
case PTRFREE:
|
|
result = GC_debug_malloc_atomic(lb, OPT_RA s, i);
|
|
break;
|
|
case UNCOLLECTABLE:
|
|
result = GC_debug_malloc_uncollectable(lb, OPT_RA s, i);
|
|
break;
|
|
# ifdef GC_ATOMIC_UNCOLLECTABLE
|
|
case AUNCOLLECTABLE:
|
|
result = GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i);
|
|
break;
|
|
# endif
|
|
default:
|
|
result = NULL; /* initialized to prevent warning. */
|
|
ABORT_RET("GC_debug_realloc: encountered bad kind");
|
|
}
|
|
|
|
if (result != NULL) {
|
|
size_t old_sz;
|
|
# ifdef SHORT_DBG_HDRS
|
|
old_sz = GC_size(base) - sizeof(oh);
|
|
# else
|
|
old_sz = ((oh *)base) -> oh_sz;
|
|
# endif
|
|
if (old_sz > 0)
|
|
BCOPY(p, result, old_sz < lb ? old_sz : lb);
|
|
GC_debug_free(p);
|
|
}
|
|
return(result);
|
|
}
|
|
|
|
GC_API GC_ATTR_MALLOC void * GC_CALL
|
|
GC_debug_generic_or_special_malloc(size_t lb, int knd, GC_EXTRA_PARAMS)
|
|
{
|
|
switch (knd) {
|
|
case PTRFREE:
|
|
return GC_debug_malloc_atomic(lb, OPT_RA s, i);
|
|
case NORMAL:
|
|
return GC_debug_malloc(lb, OPT_RA s, i);
|
|
case UNCOLLECTABLE:
|
|
return GC_debug_malloc_uncollectable(lb, OPT_RA s, i);
|
|
# ifdef GC_ATOMIC_UNCOLLECTABLE
|
|
case AUNCOLLECTABLE:
|
|
return GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i);
|
|
# endif
|
|
default:
|
|
return GC_debug_generic_malloc(lb, knd, OPT_RA s, i);
|
|
}
|
|
}
|
|
|
|
#ifndef SHORT_DBG_HDRS
|
|
|
|
/* List of smashed (clobbered) locations. We defer printing these, */
|
|
/* since we can't always print them nicely with the allocation lock */
|
|
/* held. We put them here instead of in GC_arrays, since it may be */
|
|
/* useful to be able to look at them with the debugger. */
|
|
#ifndef MAX_SMASHED
|
|
# define MAX_SMASHED 20
|
|
#endif
|
|
STATIC ptr_t GC_smashed[MAX_SMASHED] = {0};
|
|
STATIC unsigned GC_n_smashed = 0;
|
|
|
|
STATIC void GC_add_smashed(ptr_t smashed)
|
|
{
|
|
GC_ASSERT(GC_is_marked(GC_base(smashed)));
|
|
/* FIXME: Prevent adding an object while printing smashed list. */
|
|
GC_smashed[GC_n_smashed] = smashed;
|
|
if (GC_n_smashed < MAX_SMASHED - 1) ++GC_n_smashed;
|
|
/* In case of overflow, we keep the first MAX_SMASHED-1 */
|
|
/* entries plus the last one. */
|
|
GC_have_errors = TRUE;
|
|
}
|
|
|
|
/* Print all objects on the list. Clear the list. */
|
|
STATIC void GC_print_all_smashed_proc(void)
|
|
{
|
|
unsigned i;
|
|
|
|
GC_ASSERT(I_DONT_HOLD_LOCK());
|
|
if (GC_n_smashed == 0) return;
|
|
GC_err_printf("GC_check_heap_block: found %u smashed heap objects:\n",
|
|
GC_n_smashed);
|
|
for (i = 0; i < GC_n_smashed; ++i) {
|
|
ptr_t base = (ptr_t)GC_base(GC_smashed[i]);
|
|
|
|
# ifdef LINT2
|
|
if (!base) ABORT("Invalid GC_smashed element");
|
|
# endif
|
|
GC_print_smashed_obj("", base + sizeof(oh), GC_smashed[i]);
|
|
GC_smashed[i] = 0;
|
|
}
|
|
GC_n_smashed = 0;
|
|
}
|
|
|
|
/* Check all marked objects in the given block for validity */
|
|
/* Avoid GC_apply_to_each_object for performance reasons. */
|
|
STATIC void GC_check_heap_block(struct hblk *hbp, word dummy GC_ATTR_UNUSED)
|
|
{
|
|
struct hblkhdr * hhdr = HDR(hbp);
|
|
word sz = hhdr -> hb_sz;
|
|
word bit_no;
|
|
char *p, *plim;
|
|
|
|
p = hbp->hb_body;
|
|
if (sz > MAXOBJBYTES) {
|
|
plim = p;
|
|
} else {
|
|
plim = hbp->hb_body + HBLKSIZE - sz;
|
|
}
|
|
/* go through all words in block */
|
|
for (bit_no = 0; (word)p <= (word)plim;
|
|
bit_no += MARK_BIT_OFFSET(sz), p += sz) {
|
|
if (mark_bit_from_hdr(hhdr, bit_no) && GC_HAS_DEBUG_INFO((ptr_t)p)) {
|
|
ptr_t clobbered = GC_check_annotated_obj((oh *)p);
|
|
if (clobbered != 0)
|
|
GC_add_smashed(clobbered);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* This assumes that all accessible objects are marked, and that */
|
|
/* I hold the allocation lock. Normally called by collector. */
|
|
STATIC void GC_check_heap_proc(void)
|
|
{
|
|
GC_STATIC_ASSERT((sizeof(oh) & (GRANULE_BYTES - 1)) == 0);
|
|
/* FIXME: Should we check for twice that alignment? */
|
|
GC_apply_to_all_blocks(GC_check_heap_block, 0);
|
|
}
|
|
|
|
GC_INNER GC_bool GC_check_leaked(ptr_t base)
|
|
{
|
|
word i;
|
|
word obj_sz;
|
|
word *p;
|
|
|
|
if (
|
|
# if defined(KEEP_BACK_PTRS) || defined(MAKE_BACK_GRAPH)
|
|
(*(word *)base & 1) != 0 &&
|
|
# endif
|
|
GC_has_other_debug_info(base) >= 0)
|
|
return TRUE; /* object has leaked */
|
|
|
|
/* Validate freed object's content. */
|
|
p = (word *)(base + sizeof(oh));
|
|
obj_sz = BYTES_TO_WORDS(HDR(base)->hb_sz - sizeof(oh));
|
|
for (i = 0; i < obj_sz; ++i)
|
|
if (p[i] != GC_FREED_MEM_MARKER) {
|
|
GC_set_mark_bit(base); /* do not reclaim it in this cycle */
|
|
GC_add_smashed((ptr_t)(&p[i])); /* alter-after-free detected */
|
|
break; /* don't report any other smashed locations in the object */
|
|
}
|
|
|
|
return FALSE; /* GC_debug_free() has been called */
|
|
}
|
|
|
|
#endif /* !SHORT_DBG_HDRS */
|
|
|
|
#ifndef GC_NO_FINALIZATION
|
|
|
|
struct closure {
|
|
GC_finalization_proc cl_fn;
|
|
void * cl_data;
|
|
};
|
|
|
|
STATIC void * GC_make_closure(GC_finalization_proc fn, void * data)
|
|
{
|
|
struct closure * result =
|
|
# ifdef DBG_HDRS_ALL
|
|
(struct closure *) GC_debug_malloc(sizeof (struct closure),
|
|
GC_EXTRAS);
|
|
# else
|
|
(struct closure *) GC_malloc(sizeof (struct closure));
|
|
# endif
|
|
if (result != 0) {
|
|
result -> cl_fn = fn;
|
|
result -> cl_data = data;
|
|
}
|
|
return((void *)result);
|
|
}
|
|
|
|
/* An auxiliary fns to make finalization work correctly with displaced */
|
|
/* pointers introduced by the debugging allocators. */
|
|
STATIC void GC_CALLBACK GC_debug_invoke_finalizer(void * obj, void * data)
|
|
{
|
|
struct closure * cl = (struct closure *) data;
|
|
(*(cl -> cl_fn))((void *)((char *)obj + sizeof(oh)), cl -> cl_data);
|
|
}
|
|
|
|
/* Special finalizer_proc value to detect GC_register_finalizer() failure. */
|
|
#define OFN_UNSET ((GC_finalization_proc)~(signed_word)0)
|
|
|
|
/* Set ofn and ocd to reflect the values we got back. */
|
|
static void store_old(void *obj, GC_finalization_proc my_old_fn,
|
|
struct closure *my_old_cd, GC_finalization_proc *ofn,
|
|
void **ocd)
|
|
{
|
|
if (0 != my_old_fn) {
|
|
if (my_old_fn == OFN_UNSET) {
|
|
/* register_finalizer() failed; (*ofn) and (*ocd) are unchanged. */
|
|
return;
|
|
}
|
|
if (my_old_fn != GC_debug_invoke_finalizer) {
|
|
GC_err_printf("Debuggable object at %p had a non-debug finalizer\n",
|
|
obj);
|
|
/* This should probably be fatal. */
|
|
} else {
|
|
if (ofn) *ofn = my_old_cd -> cl_fn;
|
|
if (ocd) *ocd = my_old_cd -> cl_data;
|
|
}
|
|
} else {
|
|
if (ofn) *ofn = 0;
|
|
if (ocd) *ocd = 0;
|
|
}
|
|
}
|
|
|
|
GC_API void GC_CALL GC_debug_register_finalizer(void * obj,
|
|
GC_finalization_proc fn,
|
|
void * cd, GC_finalization_proc *ofn,
|
|
void * *ocd)
|
|
{
|
|
GC_finalization_proc my_old_fn = OFN_UNSET;
|
|
void * my_old_cd;
|
|
ptr_t base = (ptr_t)GC_base(obj);
|
|
if (NULL == base) {
|
|
/* We won't collect it, hence finalizer wouldn't be run. */
|
|
if (ocd) *ocd = 0;
|
|
if (ofn) *ofn = 0;
|
|
return;
|
|
}
|
|
if ((ptr_t)obj - base != sizeof(oh)) {
|
|
GC_err_printf("GC_debug_register_finalizer called with"
|
|
" non-base-pointer %p\n", obj);
|
|
}
|
|
if (0 == fn) {
|
|
GC_register_finalizer(base, 0, 0, &my_old_fn, &my_old_cd);
|
|
} else {
|
|
cd = GC_make_closure(fn, cd);
|
|
if (cd == 0) return; /* out of memory */
|
|
GC_register_finalizer(base, GC_debug_invoke_finalizer,
|
|
cd, &my_old_fn, &my_old_cd);
|
|
}
|
|
store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd);
|
|
}
|
|
|
|
GC_API void GC_CALL GC_debug_register_finalizer_no_order
|
|
(void * obj, GC_finalization_proc fn,
|
|
void * cd, GC_finalization_proc *ofn,
|
|
void * *ocd)
|
|
{
|
|
GC_finalization_proc my_old_fn = OFN_UNSET;
|
|
void * my_old_cd;
|
|
ptr_t base = (ptr_t)GC_base(obj);
|
|
if (NULL == base) {
|
|
/* We won't collect it, hence finalizer wouldn't be run. */
|
|
if (ocd) *ocd = 0;
|
|
if (ofn) *ofn = 0;
|
|
return;
|
|
}
|
|
if ((ptr_t)obj - base != sizeof(oh)) {
|
|
GC_err_printf("GC_debug_register_finalizer_no_order called with"
|
|
" non-base-pointer %p\n", obj);
|
|
}
|
|
if (0 == fn) {
|
|
GC_register_finalizer_no_order(base, 0, 0, &my_old_fn, &my_old_cd);
|
|
} else {
|
|
cd = GC_make_closure(fn, cd);
|
|
if (cd == 0) return; /* out of memory */
|
|
GC_register_finalizer_no_order(base, GC_debug_invoke_finalizer,
|
|
cd, &my_old_fn, &my_old_cd);
|
|
}
|
|
store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd);
|
|
}
|
|
|
|
GC_API void GC_CALL GC_debug_register_finalizer_unreachable
|
|
(void * obj, GC_finalization_proc fn,
|
|
void * cd, GC_finalization_proc *ofn,
|
|
void * *ocd)
|
|
{
|
|
GC_finalization_proc my_old_fn = OFN_UNSET;
|
|
void * my_old_cd;
|
|
ptr_t base = (ptr_t)GC_base(obj);
|
|
if (NULL == base) {
|
|
/* We won't collect it, hence finalizer wouldn't be run. */
|
|
if (ocd) *ocd = 0;
|
|
if (ofn) *ofn = 0;
|
|
return;
|
|
}
|
|
if ((ptr_t)obj - base != sizeof(oh)) {
|
|
GC_err_printf("GC_debug_register_finalizer_unreachable called with"
|
|
" non-base-pointer %p\n", obj);
|
|
}
|
|
if (0 == fn) {
|
|
GC_register_finalizer_unreachable(base, 0, 0, &my_old_fn, &my_old_cd);
|
|
} else {
|
|
cd = GC_make_closure(fn, cd);
|
|
if (cd == 0) return; /* out of memory */
|
|
GC_register_finalizer_unreachable(base, GC_debug_invoke_finalizer,
|
|
cd, &my_old_fn, &my_old_cd);
|
|
}
|
|
store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd);
|
|
}
|
|
|
|
GC_API void GC_CALL GC_debug_register_finalizer_ignore_self
|
|
(void * obj, GC_finalization_proc fn,
|
|
void * cd, GC_finalization_proc *ofn,
|
|
void * *ocd)
|
|
{
|
|
GC_finalization_proc my_old_fn = OFN_UNSET;
|
|
void * my_old_cd;
|
|
ptr_t base = (ptr_t)GC_base(obj);
|
|
if (NULL == base) {
|
|
/* We won't collect it, hence finalizer wouldn't be run. */
|
|
if (ocd) *ocd = 0;
|
|
if (ofn) *ofn = 0;
|
|
return;
|
|
}
|
|
if ((ptr_t)obj - base != sizeof(oh)) {
|
|
GC_err_printf("GC_debug_register_finalizer_ignore_self called with"
|
|
" non-base-pointer %p\n", obj);
|
|
}
|
|
if (0 == fn) {
|
|
GC_register_finalizer_ignore_self(base, 0, 0, &my_old_fn, &my_old_cd);
|
|
} else {
|
|
cd = GC_make_closure(fn, cd);
|
|
if (cd == 0) return; /* out of memory */
|
|
GC_register_finalizer_ignore_self(base, GC_debug_invoke_finalizer,
|
|
cd, &my_old_fn, &my_old_cd);
|
|
}
|
|
store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd);
|
|
}
|
|
|
|
#endif /* !GC_NO_FINALIZATION */
|
|
|
|
GC_API GC_ATTR_MALLOC void * GC_CALL GC_debug_malloc_replacement(size_t lb)
|
|
{
|
|
return GC_debug_malloc(lb, GC_DBG_EXTRAS);
|
|
}
|
|
|
|
GC_API void * GC_CALL GC_debug_realloc_replacement(void *p, size_t lb)
|
|
{
|
|
return GC_debug_realloc(p, lb, GC_DBG_EXTRAS);
|
|
}
|