+++ /dev/null
-/*
- * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
- * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved.
- * Copyright (c) 1997 by Silicon Graphics. All rights reserved.
- * Copyright (c) 1999-2000 by Hewlett-Packard Company. All rights reserved.
- *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
- *
- * Permission is hereby granted to use or copy this program
- * for any purpose, provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
- */
-
-#include "private/dbg_mlc.h"
-
-void GC_default_print_heap_obj_proc();
-GC_API void GC_register_finalizer_no_order
- GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd,
- GC_finalization_proc *ofn, GC_PTR *ocd));
-
-
-#ifndef SHORT_DBG_HDRS
-/* Check whether object with base pointer p has debugging info */
-/* p is assumed to point to a legitimate object in our part */
-/* of the heap. */
-/* This excludes the check as to whether the back pointer is */
-/* odd, which is added by the GC_HAS_DEBUG_INFO macro. */
-/* Note that if DBG_HDRS_ALL is set, uncollectable objects */
-/* on free lists may not have debug information set. Thus it's */
-/* not always safe to return TRUE, even if the client does */
-/* its part. */
-GC_bool GC_has_other_debug_info(p)
-ptr_t p;
-{
- register oh * ohdr = (oh *)p;
- register ptr_t body = (ptr_t)(ohdr + 1);
- register word sz = GC_size((ptr_t) ohdr);
-
- if (HBLKPTR((ptr_t)ohdr) != HBLKPTR((ptr_t)body)
- || sz < DEBUG_BYTES + EXTRA_BYTES) {
- return(FALSE);
- }
- if (ohdr -> oh_sz == sz) {
- /* Object may have had debug info, but has been deallocated */
- return(FALSE);
- }
- if (ohdr -> oh_sf == (START_FLAG ^ (word)body)) return(TRUE);
- if (((word *)ohdr)[BYTES_TO_WORDS(sz)-1] == (END_FLAG ^ (word)body)) {
- return(TRUE);
- }
- return(FALSE);
-}
-#endif
-
-#ifdef KEEP_BACK_PTRS
-
-# include <stdlib.h>
-
-# if defined(LINUX) || defined(SUNOS4) || defined(SUNOS5) \
- || defined(HPUX) || defined(IRIX) || defined(OSF1)
-# define RANDOM() random()
-# else
-# define RANDOM() (long)rand()
-# endif
-
- /* Store back pointer to source in dest, if that appears to be possible. */
- /* This is not completely safe, since we may mistakenly conclude that */
- /* dest has a debugging wrapper. But the error probability is very */
- /* small, and this shouldn't be used in production code. */
- /* We assume that dest is the real base pointer. Source will usually */
- /* be a pointer to the interior of an object. */
- void GC_store_back_pointer(ptr_t source, ptr_t dest)
- {
- if (GC_HAS_DEBUG_INFO(dest)) {
- ((oh *)dest) -> oh_back_ptr = HIDE_BACK_PTR(source);
- }
- }
-
- void GC_marked_for_finalization(ptr_t dest) {
- GC_store_back_pointer(MARKED_FOR_FINALIZATION, dest);
- }
-
- /* Store information about the object referencing dest in *base_p */
- /* and *offset_p. */
- /* source is root ==> *base_p = address, *offset_p = 0 */
- /* source is heap object ==> *base_p != 0, *offset_p = offset */
- /* Returns 1 on success, 0 if source couldn't be determined. */
- /* Dest can be any address within a heap object. */
- GC_ref_kind GC_get_back_ptr_info(void *dest, void **base_p, size_t *offset_p)
- {
- oh * hdr = (oh *)GC_base(dest);
- ptr_t bp;
- ptr_t bp_base;
- if (!GC_HAS_DEBUG_INFO((ptr_t) hdr)) return GC_NO_SPACE;
- bp = REVEAL_POINTER(hdr -> oh_back_ptr);
- if (MARKED_FOR_FINALIZATION == bp) return GC_FINALIZER_REFD;
- if (MARKED_FROM_REGISTER == bp) return GC_REFD_FROM_REG;
- if (NOT_MARKED == bp) return GC_UNREFERENCED;
-# if ALIGNMENT == 1
- /* Heuristically try to fix off by 1 errors we introduced by */
- /* insisting on even addresses. */
- {
- ptr_t alternate_ptr = bp + 1;
- ptr_t target = *(ptr_t *)bp;
- ptr_t alternate_target = *(ptr_t *)alternate_ptr;
-
- if (alternate_target >= GC_least_plausible_heap_addr
- && alternate_target <= GC_greatest_plausible_heap_addr
- && (target < GC_least_plausible_heap_addr
- || target > GC_greatest_plausible_heap_addr)) {
- bp = alternate_ptr;
- }
- }
-# endif
- bp_base = GC_base(bp);
- if (0 == bp_base) {
- *base_p = bp;
- *offset_p = 0;
- return GC_REFD_FROM_ROOT;
- } else {
- if (GC_HAS_DEBUG_INFO(bp_base)) bp_base += sizeof(oh);
- *base_p = bp_base;
- *offset_p = bp - bp_base;
- return GC_REFD_FROM_HEAP;
- }
- }
-
- /* Generate a random heap address. */
- /* The resulting address is in the heap, but */
- /* not necessarily inside a valid object. */
- void *GC_generate_random_heap_address(void)
- {
- int i;
- long heap_offset = RANDOM();
- if (GC_heapsize > RAND_MAX) {
- heap_offset *= RAND_MAX;
- heap_offset += RANDOM();
- }
- heap_offset %= GC_heapsize;
- /* This doesn't yield a uniform distribution, especially if */
- /* e.g. RAND_MAX = 1.5* GC_heapsize. But for typical cases, */
- /* it's not too bad. */
- for (i = 0; i < GC_n_heap_sects; ++ i) {
- int size = GC_heap_sects[i].hs_bytes;
- if (heap_offset < size) {
- return GC_heap_sects[i].hs_start + heap_offset;
- } else {
- heap_offset -= size;
- }
- }
- ABORT("GC_generate_random_heap_address: size inconsistency");
- /*NOTREACHED*/
- return 0;
- }
-
- /* Generate a random address inside a valid marked heap object. */
- void *GC_generate_random_valid_address(void)
- {
- ptr_t result;
- ptr_t base;
- for (;;) {
- result = GC_generate_random_heap_address();
- base = GC_base(result);
- if (0 == base) continue;
- if (!GC_is_marked(base)) continue;
- return result;
- }
- }
-
- /* Print back trace for p */
- void GC_print_backtrace(void *p)
- {
- void *current = p;
- int i;
- GC_ref_kind source;
- size_t offset;
- void *base;
-
- GC_print_heap_obj(GC_base(current));
- GC_err_printf0("\n");
- for (i = 0; ; ++i) {
- source = GC_get_back_ptr_info(current, &base, &offset);
- if (GC_UNREFERENCED == source) {
- GC_err_printf0("Reference could not be found\n");
- goto out;
- }
- if (GC_NO_SPACE == source) {
- GC_err_printf0("No debug info in object: Can't find reference\n");
- goto out;
- }
- GC_err_printf1("Reachable via %d levels of pointers from ",
- (unsigned long)i);
- switch(source) {
- case GC_REFD_FROM_ROOT:
- GC_err_printf1("root at 0x%lx\n", (unsigned long)base);
- goto out;
- case GC_REFD_FROM_REG:
- GC_err_printf0("root in register\n");
- goto out;
- case GC_FINALIZER_REFD:
- GC_err_printf0("list of finalizable objects\n");
- goto out;
- case GC_REFD_FROM_HEAP:
- GC_err_printf1("offset %ld in object:\n", (unsigned long)offset);
- /* Take GC_base(base) to get real base, i.e. header. */
- GC_print_heap_obj(GC_base(base));
- GC_err_printf0("\n");
- break;
- }
- current = base;
- }
- out:;
- }
-
- /* Force a garbage collection and generate a backtrace from a */
- /* random heap address. */
- void GC_generate_random_backtrace(void)
- {
- void * current;
- GC_gcollect();
- current = GC_generate_random_valid_address();
- GC_printf1("Chose address 0x%lx in object\n", (unsigned long)current);
- GC_print_backtrace(current);
- }
-
-#endif /* KEEP_BACK_PTRS */
-
-/* Store debugging info into p. Return displaced pointer. */
-/* Assumes we don't hold allocation lock. */
-ptr_t GC_store_debug_info(p, sz, string, integer)
-register ptr_t p; /* base pointer */
-word sz; /* bytes */
-GC_CONST char * string;
-word integer;
-{
- register word * result = (word *)((oh *)p + 1);
- DCL_LOCK_STATE;
-
- /* There is some argument that we should dissble signals here. */
- /* But that's expensive. And this way things should only appear */
- /* inconsistent while we're in the handler. */
- LOCK();
-# ifdef KEEP_BACK_PTRS
- ((oh *)p) -> oh_back_ptr = HIDE_BACK_PTR(NOT_MARKED);
-# endif
-# ifdef MAKE_BACK_GRAPH
- ((oh *)p) -> oh_bg_ptr = HIDE_BACK_PTR((ptr_t)0);
-# endif
- ((oh *)p) -> oh_string = string;
- ((oh *)p) -> oh_int = integer;
-# ifndef SHORT_DBG_HDRS
- ((oh *)p) -> oh_sz = sz;
- ((oh *)p) -> oh_sf = START_FLAG ^ (word)result;
- ((word *)p)[BYTES_TO_WORDS(GC_size(p))-1] =
- result[SIMPLE_ROUNDED_UP_WORDS(sz)] = END_FLAG ^ (word)result;
-# endif
- UNLOCK();
- return((ptr_t)result);
-}
-
-#ifdef DBG_HDRS_ALL
-/* Store debugging info into p. Return displaced pointer. */
-/* This version assumes we do hold the allocation lock. */
-ptr_t GC_store_debug_info_inner(p, sz, string, integer)
-register ptr_t p; /* base pointer */
-word sz; /* bytes */
-char * string;
-word integer;
-{
- register word * result = (word *)((oh *)p + 1);
-
- /* There is some argument that we should disable signals here. */
- /* But that's expensive. And this way things should only appear */
- /* inconsistent while we're in the handler. */
-# ifdef KEEP_BACK_PTRS
- ((oh *)p) -> oh_back_ptr = HIDE_BACK_PTR(NOT_MARKED);
-# endif
-# ifdef MAKE_BACK_GRAPH
- ((oh *)p) -> oh_bg_ptr = HIDE_BACK_PTR((ptr_t)0);
-# endif
- ((oh *)p) -> oh_string = string;
- ((oh *)p) -> oh_int = integer;
-# ifndef SHORT_DBG_HDRS
- ((oh *)p) -> oh_sz = sz;
- ((oh *)p) -> oh_sf = START_FLAG ^ (word)result;
- ((word *)p)[BYTES_TO_WORDS(GC_size(p))-1] =
- result[SIMPLE_ROUNDED_UP_WORDS(sz)] = END_FLAG ^ (word)result;
-# endif
- return((ptr_t)result);
-}
-#endif
-
-#ifndef SHORT_DBG_HDRS
-/* Check the object with debugging info at ohdr */
-/* return NIL if it's OK. Else return clobbered */
-/* address. */
-ptr_t GC_check_annotated_obj(ohdr)
-register oh * ohdr;
-{
- register ptr_t body = (ptr_t)(ohdr + 1);
- register word gc_sz = GC_size((ptr_t)ohdr);
- if (ohdr -> oh_sz + DEBUG_BYTES > gc_sz) {
- return((ptr_t)(&(ohdr -> oh_sz)));
- }
- if (ohdr -> oh_sf != (START_FLAG ^ (word)body)) {
- return((ptr_t)(&(ohdr -> oh_sf)));
- }
- if (((word *)ohdr)[BYTES_TO_WORDS(gc_sz)-1] != (END_FLAG ^ (word)body)) {
- return((ptr_t)((word *)ohdr + BYTES_TO_WORDS(gc_sz)-1));
- }
- if (((word *)body)[SIMPLE_ROUNDED_UP_WORDS(ohdr -> oh_sz)]
- != (END_FLAG ^ (word)body)) {
- return((ptr_t)((word *)body + SIMPLE_ROUNDED_UP_WORDS(ohdr -> oh_sz)));
- }
- return(0);
-}
-#endif /* !SHORT_DBG_HDRS */
-
-void GC_print_obj(p)
-ptr_t p;
-{
- register oh * ohdr = (oh *)GC_base(p);
-
- GC_err_printf1("0x%lx (", ((unsigned long)ohdr + sizeof(oh)));
- GC_err_puts(ohdr -> oh_string);
-# ifdef SHORT_DBG_HDRS
- GC_err_printf1(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int));
-# else
- GC_err_printf2(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int),
- (unsigned long)(ohdr -> oh_sz));
-# endif
- PRINT_CALL_CHAIN(ohdr);
-}
-
-# if defined(__STDC__) || defined(__cplusplus)
- void GC_debug_print_heap_obj_proc(ptr_t p)
-# else
- void GC_debug_print_heap_obj_proc(p)
- ptr_t p;
-# endif
-{
- if (GC_HAS_DEBUG_INFO(p)) {
- GC_print_obj(p);
- } else {
- GC_default_print_heap_obj_proc(p);
- }
-}
-
-#ifndef SHORT_DBG_HDRS
-void GC_print_smashed_obj(p, clobbered_addr)
-ptr_t p, clobbered_addr;
-{
- register oh * ohdr = (oh *)GC_base(p);
-
- GC_err_printf2("0x%lx in object at 0x%lx(", (unsigned long)clobbered_addr,
- (unsigned long)p);
- if (clobbered_addr <= (ptr_t)(&(ohdr -> oh_sz))
- || ohdr -> oh_string == 0) {
- GC_err_printf1("<smashed>, appr. sz = %ld)\n",
- (GC_size((ptr_t)ohdr) - DEBUG_BYTES));
- } else {
- if (ohdr -> oh_string[0] == '\0') {
- GC_err_puts("EMPTY(smashed?)");
- } else {
- GC_err_puts(ohdr -> oh_string);
- }
- GC_err_printf2(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int),
- (unsigned long)(ohdr -> oh_sz));
- PRINT_CALL_CHAIN(ohdr);
- }
-}
-#endif
-
-void GC_check_heap_proc GC_PROTO((void));
-
-void GC_do_nothing() {}
-
-void GC_start_debugging()
-{
-# ifndef SHORT_DBG_HDRS
- GC_check_heap = GC_check_heap_proc;
-# else
- GC_check_heap = GC_do_nothing;
-# endif
- GC_print_heap_obj = GC_debug_print_heap_obj_proc;
- GC_debugging_started = TRUE;
- GC_register_displacement((word)sizeof(oh));
-}
-
-# if defined(__STDC__) || defined(__cplusplus)
- void GC_debug_register_displacement(GC_word offset)
-# else
- void GC_debug_register_displacement(offset)
- GC_word offset;
-# endif
-{
- GC_register_displacement(offset);
- GC_register_displacement((word)sizeof(oh) + offset);
-}
-
-# ifdef __STDC__
- GC_PTR GC_debug_malloc(size_t lb, GC_EXTRA_PARAMS)
-# else
- GC_PTR GC_debug_malloc(lb, s, i)
- size_t lb;
- char * s;
- int i;
-# ifdef GC_ADD_CALLER
- --> GC_ADD_CALLER not implemented for K&R C
-# endif
-# endif
-{
- GC_PTR result = GC_malloc(lb + DEBUG_BYTES);
-
- if (result == 0) {
- GC_err_printf1("GC_debug_malloc(%ld) returning NIL (",
- (unsigned long) lb);
- GC_err_puts(s);
- GC_err_printf1(":%ld)\n", (unsigned long)i);
- return(0);
- }
- if (!GC_debugging_started) {
- GC_start_debugging();
- }
- ADD_CALL_CHAIN(result, ra);
- return (GC_store_debug_info(result, (word)lb, s, (word)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.
- * We assume debugging was started in collector initialization,
- * and we already hold the GC lock.
- */
- GC_PTR GC_debug_generic_malloc_inner(size_t lb, int k)
- {
- GC_PTR result = GC_generic_malloc_inner(lb + DEBUG_BYTES, k);
-
- if (result == 0) {
- GC_err_printf1("GC internal allocation (%ld bytes) returning NIL\n",
- (unsigned long) lb);
- return(0);
- }
- ADD_CALL_CHAIN(result, ra);
- return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", (word)0));
- }
-
- GC_PTR GC_debug_generic_malloc_inner_ignore_off_page(size_t lb, int k)
- {
- GC_PTR result = GC_generic_malloc_inner_ignore_off_page(
- lb + DEBUG_BYTES, k);
-
- if (result == 0) {
- GC_err_printf1("GC internal allocation (%ld bytes) returning NIL\n",
- (unsigned long) lb);
- return(0);
- }
- ADD_CALL_CHAIN(result, ra);
- return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", (word)0));
- }
-# endif
-
-#ifdef STUBBORN_ALLOC
-# ifdef __STDC__
- GC_PTR GC_debug_malloc_stubborn(size_t lb, GC_EXTRA_PARAMS)
-# else
- GC_PTR GC_debug_malloc_stubborn(lb, s, i)
- size_t lb;
- char * s;
- int i;
-# endif
-{
- GC_PTR result = GC_malloc_stubborn(lb + DEBUG_BYTES);
-
- if (result == 0) {
- GC_err_printf1("GC_debug_malloc(%ld) returning NIL (",
- (unsigned long) lb);
- GC_err_puts(s);
- GC_err_printf1(":%ld)\n", (unsigned long)i);
- return(0);
- }
- if (!GC_debugging_started) {
- GC_start_debugging();
- }
- ADD_CALL_CHAIN(result, ra);
- return (GC_store_debug_info(result, (word)lb, s, (word)i));
-}
-
-void GC_debug_change_stubborn(p)
-GC_PTR p;
-{
- register GC_PTR q = GC_base(p);
- register hdr * hhdr;
-
- if (q == 0) {
- GC_err_printf1("Bad argument: 0x%lx to GC_debug_change_stubborn\n",
- (unsigned long) p);
- ABORT("GC_debug_change_stubborn: bad arg");
- }
- hhdr = HDR(q);
- if (hhdr -> hb_obj_kind != STUBBORN) {
- GC_err_printf1("GC_debug_change_stubborn arg not stubborn: 0x%lx\n",
- (unsigned long) p);
- ABORT("GC_debug_change_stubborn: arg not stubborn");
- }
- GC_change_stubborn(q);
-}
-
-void GC_debug_end_stubborn_change(p)
-GC_PTR p;
-{
- register GC_PTR q = GC_base(p);
- register hdr * hhdr;
-
- if (q == 0) {
- GC_err_printf1("Bad argument: 0x%lx to GC_debug_end_stubborn_change\n",
- (unsigned long) p);
- ABORT("GC_debug_end_stubborn_change: bad arg");
- }
- hhdr = HDR(q);
- if (hhdr -> hb_obj_kind != STUBBORN) {
- GC_err_printf1("debug_end_stubborn_change arg not stubborn: 0x%lx\n",
- (unsigned long) p);
- ABORT("GC_debug_end_stubborn_change: arg not stubborn");
- }
- GC_end_stubborn_change(q);
-}
-
-#else /* !STUBBORN_ALLOC */
-
-# ifdef __STDC__
- GC_PTR GC_debug_malloc_stubborn(size_t lb, GC_EXTRA_PARAMS)
-# else
- GC_PTR GC_debug_malloc_stubborn(lb, s, i)
- size_t lb;
- char * s;
- int i;
-# endif
-{
- return GC_debug_malloc(lb, OPT_RA s, i);
-}
-
-void GC_debug_change_stubborn(p)
-GC_PTR p;
-{
-}
-
-void GC_debug_end_stubborn_change(p)
-GC_PTR p;
-{
-}
-
-#endif /* !STUBBORN_ALLOC */
-
-# ifdef __STDC__
- GC_PTR GC_debug_malloc_atomic(size_t lb, GC_EXTRA_PARAMS)
-# else
- GC_PTR GC_debug_malloc_atomic(lb, s, i)
- size_t lb;
- char * s;
- int i;
-# endif
-{
- GC_PTR result = GC_malloc_atomic(lb + DEBUG_BYTES);
-
- if (result == 0) {
- GC_err_printf1("GC_debug_malloc_atomic(%ld) returning NIL (",
- (unsigned long) lb);
- GC_err_puts(s);
- GC_err_printf1(":%ld)\n", (unsigned long)i);
- return(0);
- }
- if (!GC_debugging_started) {
- GC_start_debugging();
- }
- ADD_CALL_CHAIN(result, ra);
- return (GC_store_debug_info(result, (word)lb, s, (word)i));
-}
-
-# ifdef __STDC__
- GC_PTR GC_debug_malloc_uncollectable(size_t lb, GC_EXTRA_PARAMS)
-# else
- GC_PTR GC_debug_malloc_uncollectable(lb, s, i)
- size_t lb;
- char * s;
- int i;
-# endif
-{
- GC_PTR result = GC_malloc_uncollectable(lb + DEBUG_BYTES);
-
- if (result == 0) {
- GC_err_printf1("GC_debug_malloc_uncollectable(%ld) returning NIL (",
- (unsigned long) lb);
- GC_err_puts(s);
- GC_err_printf1(":%ld)\n", (unsigned long)i);
- return(0);
- }
- if (!GC_debugging_started) {
- GC_start_debugging();
- }
- ADD_CALL_CHAIN(result, ra);
- return (GC_store_debug_info(result, (word)lb, s, (word)i));
-}
-
-#ifdef ATOMIC_UNCOLLECTABLE
-# ifdef __STDC__
- GC_PTR GC_debug_malloc_atomic_uncollectable(size_t lb, GC_EXTRA_PARAMS)
-# else
- GC_PTR GC_debug_malloc_atomic_uncollectable(lb, s, i)
- size_t lb;
- char * s;
- int i;
-# endif
-{
- GC_PTR result = GC_malloc_atomic_uncollectable(lb + DEBUG_BYTES);
-
- if (result == 0) {
- GC_err_printf1(
- "GC_debug_malloc_atomic_uncollectable(%ld) returning NIL (",
- (unsigned long) lb);
- GC_err_puts(s);
- GC_err_printf1(":%ld)\n", (unsigned long)i);
- return(0);
- }
- if (!GC_debugging_started) {
- GC_start_debugging();
- }
- ADD_CALL_CHAIN(result, ra);
- return (GC_store_debug_info(result, (word)lb, s, (word)i));
-}
-#endif /* ATOMIC_UNCOLLECTABLE */
-
-# ifdef __STDC__
- void GC_debug_free(GC_PTR p)
-# else
- void GC_debug_free(p)
- GC_PTR p;
-# endif
-{
- register GC_PTR base;
- register ptr_t clobbered;
-
- if (0 == p) return;
- base = GC_base(p);
- if (base == 0) {
- GC_err_printf1("Attempt to free invalid pointer %lx\n",
- (unsigned long)p);
- ABORT("free(invalid pointer)");
- }
- if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
- GC_err_printf1(
- "GC_debug_free called on pointer %lx wo debugging info\n",
- (unsigned long)p);
- } else {
-# ifndef SHORT_DBG_HDRS
- clobbered = GC_check_annotated_obj((oh *)base);
- if (clobbered != 0) {
- if (((oh *)base) -> oh_sz == GC_size(base)) {
- GC_err_printf0(
- "GC_debug_free: found previously deallocated (?) object at ");
- } else {
- GC_err_printf0("GC_debug_free: found smashed location at ");
- }
- GC_print_smashed_obj(p, clobbered);
- }
- /* Invalidate size */
- ((oh *)base) -> oh_sz = GC_size(base);
-# endif /* SHORT_DBG_HDRS */
- }
- if (GC_find_leak) {
- GC_free(base);
- } else {
- register hdr * hhdr = HDR(p);
- GC_bool uncollectable = FALSE;
-
- if (hhdr -> hb_obj_kind == UNCOLLECTABLE) {
- uncollectable = TRUE;
- }
-# ifdef ATOMIC_UNCOLLECTABLE
- if (hhdr -> hb_obj_kind == AUNCOLLECTABLE) {
- uncollectable = TRUE;
- }
-# endif
- if (uncollectable) GC_free(base);
- } /* !GC_find_leak */
-}
-
-#ifdef THREADS
-
-extern void GC_free_inner(GC_PTR p);
-
-/* Used internally; we assume it's called correctly. */
-void GC_debug_free_inner(GC_PTR p)
-{
- GC_free_inner(GC_base(p));
-}
-#endif
-
-# ifdef __STDC__
- GC_PTR GC_debug_realloc(GC_PTR p, size_t lb, GC_EXTRA_PARAMS)
-# else
- GC_PTR GC_debug_realloc(p, lb, s, i)
- GC_PTR p;
- size_t lb;
- char *s;
- int i;
-# endif
-{
- register GC_PTR base = GC_base(p);
- register ptr_t clobbered;
- register GC_PTR result;
- register size_t copy_sz = lb;
- register size_t old_sz;
- register hdr * hhdr;
-
- if (p == 0) return(GC_debug_malloc(lb, OPT_RA s, i));
- if (base == 0) {
- GC_err_printf1(
- "Attempt to reallocate invalid pointer %lx\n", (unsigned long)p);
- ABORT("realloc(invalid pointer)");
- }
- if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
- GC_err_printf1(
- "GC_debug_realloc called on pointer %lx wo debugging info\n",
- (unsigned long)p);
- return(GC_realloc(p, lb));
- }
- hhdr = HDR(base);
- switch (hhdr -> hb_obj_kind) {
-# ifdef STUBBORN_ALLOC
- case STUBBORN:
- result = GC_debug_malloc_stubborn(lb, OPT_RA s, i);
- break;
-# endif
- 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 ATOMIC_UNCOLLECTABLE
- case AUNCOLLECTABLE:
- result = GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i);
- break;
-# endif
- default:
- GC_err_printf0("GC_debug_realloc: encountered bad kind\n");
- ABORT("bad kind");
- }
-# ifdef SHORT_DBG_HDRS
- old_sz = GC_size(base) - sizeof(oh);
-# else
- clobbered = GC_check_annotated_obj((oh *)base);
- if (clobbered != 0) {
- GC_err_printf0("GC_debug_realloc: found smashed location at ");
- GC_print_smashed_obj(p, clobbered);
- }
- old_sz = ((oh *)base) -> oh_sz;
-# endif
- if (old_sz < copy_sz) copy_sz = old_sz;
- if (result == 0) return(0);
- BCOPY(p, result, copy_sz);
- GC_debug_free(p);
- return(result);
-}
-
-#ifndef SHORT_DBG_HDRS
-/* Check all marked objects in the given block for validity */
-/*ARGSUSED*/
-# if defined(__STDC__) || defined(__cplusplus)
- void GC_check_heap_block(register struct hblk *hbp, word dummy)
-# else
- void GC_check_heap_block(hbp, dummy)
- register struct hblk *hbp; /* ptr to current heap block */
- word dummy;
-# endif
-{
- register struct hblkhdr * hhdr = HDR(hbp);
- register word sz = hhdr -> hb_sz;
- register int word_no;
- register word *p, *plim;
-
- p = (word *)(hbp->hb_body);
- word_no = 0;
- if (sz > MAXOBJSZ) {
- plim = p;
- } else {
- plim = (word *)((((word)hbp) + HBLKSIZE) - WORDS_TO_BYTES(sz));
- }
- /* go through all words in block */
- while( p <= plim ) {
- if( mark_bit_from_hdr(hhdr, word_no)
- && GC_HAS_DEBUG_INFO((ptr_t)p)) {
- ptr_t clobbered = GC_check_annotated_obj((oh *)p);
-
- if (clobbered != 0) {
- GC_err_printf0(
- "GC_check_heap_block: found smashed location at ");
- GC_print_smashed_obj((ptr_t)p, clobbered);
- }
- }
- word_no += sz;
- p += sz;
- }
-}
-
-
-/* This assumes that all accessible objects are marked, and that */
-/* I hold the allocation lock. Normally called by collector. */
-void GC_check_heap_proc()
-{
-# ifndef SMALL_CONFIG
- if (sizeof(oh) & (2 * sizeof(word) - 1) != 0) {
- ABORT("Alignment problem: object header has inappropriate size\n");
- }
-# endif
- GC_apply_to_all_blocks(GC_check_heap_block, (word)0);
-}
-
-#endif /* !SHORT_DBG_HDRS */
-
-struct closure {
- GC_finalization_proc cl_fn;
- GC_PTR cl_data;
-};
-
-# ifdef __STDC__
- void * GC_make_closure(GC_finalization_proc fn, void * data)
-# else
- GC_PTR GC_make_closure(fn, data)
- GC_finalization_proc fn;
- GC_PTR data;
-# endif
-{
- 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
-
- result -> cl_fn = fn;
- result -> cl_data = data;
- return((GC_PTR)result);
-}
-
-# ifdef __STDC__
- void GC_debug_invoke_finalizer(void * obj, void * data)
-# else
- void GC_debug_invoke_finalizer(obj, data)
- char * obj;
- char * data;
-# endif
-{
- register struct closure * cl = (struct closure *) data;
-
- (*(cl -> cl_fn))((GC_PTR)((char *)obj + sizeof(oh)), cl -> cl_data);
-}
-
-/* Set ofn and ocd to reflect the values we got back. */
-static void store_old (obj, my_old_fn, my_old_cd, ofn, ocd)
-GC_PTR obj;
-GC_finalization_proc my_old_fn;
-struct closure * my_old_cd;
-GC_finalization_proc *ofn;
-GC_PTR *ocd;
-{
- if (0 != my_old_fn) {
- if (my_old_fn != GC_debug_invoke_finalizer) {
- GC_err_printf1("Debuggable object at 0x%lx had 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;
- }
-}
-
-# ifdef __STDC__
- void GC_debug_register_finalizer(GC_PTR obj, GC_finalization_proc fn,
- GC_PTR cd, GC_finalization_proc *ofn,
- GC_PTR *ocd)
-# else
- void GC_debug_register_finalizer(obj, fn, cd, ofn, ocd)
- GC_PTR obj;
- GC_finalization_proc fn;
- GC_PTR cd;
- GC_finalization_proc *ofn;
- GC_PTR *ocd;
-# endif
-{
- GC_finalization_proc my_old_fn;
- GC_PTR my_old_cd;
- ptr_t base = GC_base(obj);
- if (0 == base || (ptr_t)obj - base != sizeof(oh)) {
- GC_err_printf1(
- "GC_register_finalizer called with non-base-pointer 0x%lx\n",
- obj);
- }
- if (0 == fn) {
- GC_register_finalizer(base, 0, 0, &my_old_fn, &my_old_cd);
- } else {
- GC_register_finalizer(base, GC_debug_invoke_finalizer,
- GC_make_closure(fn,cd), &my_old_fn, &my_old_cd);
- }
- store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd);
-}
-
-# ifdef __STDC__
- void GC_debug_register_finalizer_no_order
- (GC_PTR obj, GC_finalization_proc fn,
- GC_PTR cd, GC_finalization_proc *ofn,
- GC_PTR *ocd)
-# else
- void GC_debug_register_finalizer_no_order
- (obj, fn, cd, ofn, ocd)
- GC_PTR obj;
- GC_finalization_proc fn;
- GC_PTR cd;
- GC_finalization_proc *ofn;
- GC_PTR *ocd;
-# endif
-{
- GC_finalization_proc my_old_fn;
- GC_PTR my_old_cd;
- ptr_t base = GC_base(obj);
- if (0 == base || (ptr_t)obj - base != sizeof(oh)) {
- GC_err_printf1(
- "GC_register_finalizer_no_order called with non-base-pointer 0x%lx\n",
- obj);
- }
- if (0 == fn) {
- GC_register_finalizer_no_order(base, 0, 0, &my_old_fn, &my_old_cd);
- } else {
- GC_register_finalizer_no_order(base, GC_debug_invoke_finalizer,
- GC_make_closure(fn,cd), &my_old_fn,
- &my_old_cd);
- }
- store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd);
- }
-
-# ifdef __STDC__
- void GC_debug_register_finalizer_ignore_self
- (GC_PTR obj, GC_finalization_proc fn,
- GC_PTR cd, GC_finalization_proc *ofn,
- GC_PTR *ocd)
-# else
- void GC_debug_register_finalizer_ignore_self
- (obj, fn, cd, ofn, ocd)
- GC_PTR obj;
- GC_finalization_proc fn;
- GC_PTR cd;
- GC_finalization_proc *ofn;
- GC_PTR *ocd;
-# endif
-{
- GC_finalization_proc my_old_fn;
- GC_PTR my_old_cd;
- ptr_t base = GC_base(obj);
- if (0 == base || (ptr_t)obj - base != sizeof(oh)) {
- GC_err_printf1(
- "GC_register_finalizer_ignore_self called with non-base-pointer 0x%lx\n",
- obj);
- }
- if (0 == fn) {
- GC_register_finalizer_ignore_self(base, 0, 0, &my_old_fn, &my_old_cd);
- } else {
- GC_register_finalizer_ignore_self(base, GC_debug_invoke_finalizer,
- GC_make_closure(fn,cd), &my_old_fn,
- &my_old_cd);
- }
- store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd);
-}
-
-#ifdef GC_ADD_CALLER
-# define RA GC_RETURN_ADDR,
-#else
-# define RA
-#endif
-
-GC_PTR GC_debug_malloc_replacement(lb)
-size_t lb;
-{
- return GC_debug_malloc(lb, RA "unknown", 0);
-}
-
-GC_PTR GC_debug_realloc_replacement(p, lb)
-GC_PTR p;
-size_t lb;
-{
- return GC_debug_realloc(p, lb, RA "unknown", 0);
-}
projects / msp430-gcc.git / blobdiff