-/*
+/*
* 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.
* modified is included with the above copyright notice.
*/
-#include <errno.h>
-#include <string.h>
#include "private/dbg_mlc.h"
-void GC_default_print_heap_obj_proc(ptr_t p);
-GC_API void GC_CALL GC_register_finalizer_no_order
- (void * obj, GC_finalization_proc fn, void * cd,
- GC_finalization_proc *ofn, void * *ocd);
+#ifndef MSWINCE
+# include <errno.h>
+#endif
+#include <string.h>
+
+GC_INNER void GC_default_print_heap_obj_proc(ptr_t p);
+GC_API void GC_CALL GC_register_finalizer_no_order(void * obj,
+ GC_finalization_proc fn, void * cd,
+ GC_finalization_proc *ofn, void * *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(ptr_t p)
-{
- register oh * ohdr = (oh *)p;
- register ptr_t body = (ptr_t)(ohdr + 1);
- register word sz = GC_size((ptr_t) ohdr);
-
+ /* 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_INNER GC_bool GC_has_other_debug_info(ptr_t p)
+ {
+ oh * ohdr = (oh *)p;
+ ptr_t body = (ptr_t)(ohdr + 1);
+ 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);
+ /* 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
# 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. */
+ /* 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)
+ /* be a pointer to the interior of an object. */
+ GC_INNER 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_INNER 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)
+ /* 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_API GC_ref_kind GC_CALL 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);
+ bp = GC_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. */
+ /* 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;
- }
+ 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);
}
}
- /* 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)
+ /* Generate a random heap address. */
+ /* The resulting address is in the heap, but */
+ /* not necessarily inside a valid object. */
+ GC_API void * GC_CALL GC_generate_random_heap_address(void)
{
size_t i;
word heap_offset = RANDOM();
if (GC_heapsize > RAND_MAX) {
- heap_offset *= RAND_MAX;
- heap_offset += RANDOM();
+ 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. */
+ /* 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) {
- size_t size = GC_heap_sects[i].hs_bytes;
- if (heap_offset < size) {
- return GC_heap_sects[i].hs_start + heap_offset;
- } else {
- heap_offset -= size;
- }
+ size_t 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*/
}
/* Generate a random address inside a valid marked heap object. */
- void *GC_generate_random_valid_address(void)
+ GC_API void * GC_CALL 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;
+ 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)
+ GC_API void GC_CALL GC_print_backtrace(void *p)
{
void *current = p;
int i;
for (i = 0; ; ++i) {
source = GC_get_back_ptr_info(current, &base, &offset);
if (GC_UNREFERENCED == source) {
- GC_err_printf("Reference could not be found\n");
- goto out;
+ GC_err_printf("Reference could not be found\n");
+ goto out;
}
if (GC_NO_SPACE == source) {
- GC_err_printf("No debug info in object: Can't find reference\n");
- goto out;
+ GC_err_printf("No debug info in object: Can't find reference\n");
+ goto out;
}
GC_err_printf("Reachable via %d levels of pointers from ", i);
switch(source) {
- case GC_REFD_FROM_ROOT:
- GC_err_printf("root at %p\n\n", base);
- goto out;
- case GC_REFD_FROM_REG:
- GC_err_printf("root in register\n\n");
- goto out;
- case GC_FINALIZER_REFD:
- GC_err_printf("list of finalizable objects\n\n");
- goto out;
- case GC_REFD_FROM_HEAP:
- GC_err_printf("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_printf("\n");
- break;
- default:
- GC_err_printf("INTERNAL ERROR: UNEXPECTED SOURCE!!!!\n");
- goto out;
+ case GC_REFD_FROM_ROOT:
+ GC_err_printf("root at %p\n\n", base);
+ goto out;
+ case GC_REFD_FROM_REG:
+ GC_err_printf("root in register\n\n");
+ goto out;
+ case GC_FINALIZER_REFD:
+ GC_err_printf("list of finalizable objects\n\n");
+ goto out;
+ case GC_REFD_FROM_HEAP:
+ GC_err_printf("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_printf("\n");
+ break;
+ default:
+ GC_err_printf("INTERNAL ERROR: UNEXPECTED SOURCE!!!!\n");
+ goto out;
}
current = base;
}
out:;
}
- /* Force a garbage collection and generate a backtrace from a */
- /* random heap address. */
- void GC_generate_random_backtrace_no_gc(void)
+ /* Force a garbage collection and generate a backtrace from a */
+ /* random heap address. */
+ GC_INNER void GC_generate_random_backtrace_no_gc(void)
{
void * current;
current = GC_generate_random_valid_address();
GC_printf("\n****Chose address %p in object\n", current);
GC_print_backtrace(current);
}
-
- void GC_generate_random_backtrace(void)
+
+ GC_API void GC_CALL GC_generate_random_backtrace(void)
{
- GC_gcollect();
+ if (GC_try_to_collect(GC_never_stop_func) == 0) {
+ GC_err_printf("Cannot generate a backtrace: "
+ "garbage collection is disabled!\n");
+ return;
+ }
GC_generate_random_backtrace_no_gc();
}
-
+
#endif /* KEEP_BACK_PTRS */
# define CROSSES_HBLK(p, sz) \
- (((word)(p + sizeof(oh) + sz - 1) ^ (word)p) >= HBLKSIZE)
+ (((word)(p + sizeof(oh) + sz - 1) ^ (word)p) >= HBLKSIZE)
/* Store debugging info into p. Return displaced pointer. */
-/* Assumes we don't hold allocation lock. */
-ptr_t GC_store_debug_info(ptr_t p, word sz, const char *string, word integer)
+/* Assumes we don't hold allocation lock. */
+GC_INNER ptr_t GC_store_debug_info(ptr_t p, word sz, const char *string,
+ word integer)
{
- register word * result = (word *)((oh *)p + 1);
+ word * result = (word *)((oh *)p + 1);
DCL_LOCK_STATE;
-
+
LOCK();
GC_ASSERT(GC_size(p) >= sizeof(oh) + sz);
GC_ASSERT(!(SMALL_OBJ(sz) && CROSSES_HBLK(p, sz)));
}
#ifdef DBG_HDRS_ALL
-/* Store debugging info into p. Return displaced pointer. */
-/* This version assumes we do hold the allocation lock. */
+/* Store debugging info into p. Return displaced pointer. */
+/* This version assumes we do hold the allocation lock. */
STATIC ptr_t GC_store_debug_info_inner(ptr_t p, word sz, char *string,
- word integer)
+ word integer)
{
- register word * result = (word *)((oh *)p + 1);
-
+ word * result = (word *)((oh *)p + 1);
+
GC_ASSERT(GC_size(p) >= sizeof(oh) + sz);
GC_ASSERT(!(SMALL_OBJ(sz) && CROSSES_HBLK(p, sz)));
# ifdef KEEP_BACK_PTRS
#endif
#ifndef SHORT_DBG_HDRS
-/* Check the object with debugging info at ohdr */
-/* return NIL if it's OK. Else return clobbered */
-/* address. */
-STATIC ptr_t GC_check_annotated_obj(oh *ohdr)
-{
- register ptr_t body = (ptr_t)(ohdr + 1);
- register word gc_sz = GC_size((ptr_t)ohdr);
+ /* Check the object with debugging info at ohdr */
+ /* return NIL if it's OK. Else return clobbered */
+ /* address. */
+ STATIC ptr_t GC_check_annotated_obj(oh *ohdr)
+ {
+ ptr_t body = (ptr_t)(ohdr + 1);
+ word gc_sz = GC_size((ptr_t)ohdr);
if (ohdr -> oh_sz + DEBUG_BYTES > gc_sz) {
return((ptr_t)(&(ohdr -> oh_sz)));
}
}
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((ptr_t)((word *)body + SIMPLE_ROUNDED_UP_WORDS(ohdr->oh_sz)));
}
return(0);
-}
+ }
#endif /* !SHORT_DBG_HDRS */
-static GC_describe_type_fn GC_describe_type_fns[MAXOBJKINDS] = {0};
+STATIC GC_describe_type_fn GC_describe_type_fns[MAXOBJKINDS] = {0};
-void GC_CALL GC_register_describe_type_fn(int kind, GC_describe_type_fn fn)
+GC_API void GC_CALL GC_register_describe_type_fn(int kind,
+ GC_describe_type_fn fn)
{
GC_describe_type_fns[kind] = fn;
}
-/* Print a type description for the object whose client-visible address */
-/* is p. */
+/* Print a type description for the object whose client-visible address */
+/* is p. */
STATIC void GC_print_type(ptr_t p)
{
hdr * hhdr = GC_find_header(p);
int kind = hhdr -> hb_obj_kind;
if (0 != GC_describe_type_fns[kind] && GC_is_marked(GC_base(p))) {
- /* This should preclude free list objects except with */
- /* thread-local allocation. */
- buffer[GC_TYPE_DESCR_LEN] = 0;
- (GC_describe_type_fns[kind])(p, buffer);
- GC_ASSERT(buffer[GC_TYPE_DESCR_LEN] == 0);
- GC_err_puts(buffer);
+ /* This should preclude free list objects except with */
+ /* thread-local allocation. */
+ buffer[GC_TYPE_DESCR_LEN] = 0;
+ (GC_describe_type_fns[kind])(p, buffer);
+ GC_ASSERT(buffer[GC_TYPE_DESCR_LEN] == 0);
+ GC_err_puts(buffer);
} else {
- switch(kind) {
- case PTRFREE:
- GC_err_puts("PTRFREE");
- break;
- case NORMAL:
- GC_err_puts("NORMAL");
- break;
- case UNCOLLECTABLE:
- GC_err_puts("UNCOLLECTABLE");
- break;
-# ifdef ATOMIC_UNCOLLECTABLE
- case AUNCOLLECTABLE:
- GC_err_puts("ATOMIC UNCOLLECTABLE");
- break;
-# endif
- case STUBBORN:
- GC_err_puts("STUBBORN");
- break;
- default:
- GC_err_printf("kind %d, descr 0x%lx", kind,
- (unsigned long)(hhdr -> hb_descr));
- }
+ switch(kind) {
+ case PTRFREE:
+ GC_err_puts("PTRFREE");
+ break;
+ case NORMAL:
+ GC_err_puts("NORMAL");
+ break;
+ case UNCOLLECTABLE:
+ GC_err_puts("UNCOLLECTABLE");
+ break;
+# ifdef ATOMIC_UNCOLLECTABLE
+ case AUNCOLLECTABLE:
+ GC_err_puts("ATOMIC UNCOLLECTABLE");
+ break;
+# endif
+ case STUBBORN:
+ GC_err_puts("STUBBORN");
+ break;
+ default:
+ GC_err_printf("kind %d, descr 0x%lx", kind,
+ (unsigned long)(hhdr -> hb_descr));
+ }
}
}
-
-
-void GC_print_obj(ptr_t p)
+/* Print a human-readable description of the object to stderr. p points */
+/* to somewhere inside an object with the debugging info. */
+STATIC void GC_print_obj(ptr_t p)
{
- register oh * ohdr = (oh *)GC_base(p);
-
+ oh * ohdr = (oh *)GC_base(p);
+
GC_ASSERT(I_DONT_HOLD_LOCK());
GC_err_printf("%p (", ((ptr_t)ohdr + sizeof(oh)));
GC_err_puts(ohdr -> oh_string);
GC_err_printf(":%ld, ", (unsigned long)(ohdr -> oh_int));
# else
GC_err_printf(":%ld, sz=%ld, ", (unsigned long)(ohdr -> oh_int),
- (unsigned long)(ohdr -> oh_sz));
+ (unsigned long)(ohdr -> oh_sz));
# endif
GC_print_type((ptr_t)(ohdr + 1));
GC_err_puts(")\n");
{
GC_ASSERT(I_DONT_HOLD_LOCK());
if (GC_HAS_DEBUG_INFO(p)) {
- GC_print_obj(p);
+ GC_print_obj(p);
} else {
- GC_default_print_heap_obj_proc(p);
+ 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(ptr_t p, ptr_t clobbered_addr)
-{
- register oh * ohdr = (oh *)GC_base(p);
-
+ /* 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(ptr_t p, ptr_t clobbered_addr)
+ {
+ oh * ohdr = (oh *)GC_base(p);
+
GC_ASSERT(I_DONT_HOLD_LOCK());
if (clobbered_addr <= (ptr_t)(&(ohdr -> oh_sz))
|| ohdr -> oh_string == 0) {
- GC_err_printf(
- "%p in or near object at %p(<smashed>, appr. sz = %lu)\n",
- clobbered_addr, p,
- (unsigned long)(GC_size((ptr_t)ohdr) - DEBUG_BYTES));
+ GC_err_printf(
+ "%p in or near object at %p(<smashed>, appr. sz = %lu)\n",
+ clobbered_addr, p,
+ (unsigned long)(GC_size((ptr_t)ohdr) - DEBUG_BYTES));
} else {
- GC_err_printf("%p in or near object at %p(%s:%lu, sz=%lu)\n",
- clobbered_addr, p,
- (word)(ohdr -> oh_string) < HBLKSIZE ? "(smashed string)" :
- ohdr -> oh_string[0] == '\0' ? "EMPTY(smashed?)" :
- ohdr -> oh_string,
- (unsigned long)(ohdr -> oh_int),
- (unsigned long)(ohdr -> oh_sz));
+ GC_err_printf("%p in or near object at %p(%s:%lu, sz=%lu)\n",
+ clobbered_addr, p,
+ (word)(ohdr -> oh_string) < HBLKSIZE ? "(smashed string)" :
+ ohdr -> oh_string[0] == '\0' ? "EMPTY(smashed?)" :
+ ohdr -> oh_string,
+ (unsigned long)(ohdr -> oh_int),
+ (unsigned long)(ohdr -> oh_sz));
PRINT_CALL_CHAIN(ohdr);
}
-}
+ }
#endif
#ifndef SHORT_DBG_HDRS
STATIC void GC_do_nothing(void) {}
#endif
-void GC_start_debugging(void)
+GC_INNER void GC_start_debugging(void)
{
# ifndef SHORT_DBG_HDRS
GC_check_heap = GC_check_heap_proc;
GC_API void * GC_CALL GC_debug_malloc(size_t lb, GC_EXTRA_PARAMS)
{
void * result = GC_malloc(lb + DEBUG_BYTES);
-
+
if (result == 0) {
GC_err_printf("GC_debug_malloc(%lu) returning NIL (",
- (unsigned long) lb);
+ (unsigned long) lb);
GC_err_puts(s);
GC_err_printf(":%ld)\n", (unsigned long)i);
return(0);
}
if (!GC_debugging_started) {
- GC_start_debugging();
+ GC_start_debugging();
}
ADD_CALL_CHAIN(result, ra);
return (GC_store_debug_info(result, (word)lb, s, (word)i));
}
GC_API void * GC_CALL GC_debug_malloc_ignore_off_page(size_t lb,
- GC_EXTRA_PARAMS)
+ GC_EXTRA_PARAMS)
{
void * result = GC_malloc_ignore_off_page(lb + DEBUG_BYTES);
-
+
if (result == 0) {
GC_err_printf("GC_debug_malloc_ignore_off_page(%lu) returning NIL (",
- (unsigned long) lb);
+ (unsigned long) lb);
GC_err_puts(s);
GC_err_printf(":%lu)\n", (unsigned long)i);
return(0);
}
if (!GC_debugging_started) {
- GC_start_debugging();
+ GC_start_debugging();
}
ADD_CALL_CHAIN(result, ra);
return (GC_store_debug_info(result, (word)lb, s, (word)i));
}
GC_API void * GC_CALL GC_debug_malloc_atomic_ignore_off_page(size_t lb,
- GC_EXTRA_PARAMS)
+ GC_EXTRA_PARAMS)
{
void * result = GC_malloc_atomic_ignore_off_page(lb + DEBUG_BYTES);
-
+
if (result == 0) {
GC_err_printf("GC_debug_malloc_atomic_ignore_off_page(%lu)"
- " returning NIL (", (unsigned long) lb);
+ " returning NIL (", (unsigned long) lb);
GC_err_puts(s);
GC_err_printf(":%lu)\n", (unsigned long)i);
return(0);
}
if (!GC_debugging_started) {
- GC_start_debugging();
+ 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.
- */
- void * GC_debug_generic_malloc_inner(size_t lb, int k)
+#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_INNER void * GC_debug_generic_malloc_inner(size_t lb, int k)
{
void * result = GC_generic_malloc_inner(lb + DEBUG_BYTES, k);
-
+
if (result == 0) {
GC_err_printf("GC internal allocation (%lu bytes) returning NIL\n",
- (unsigned long) lb);
+ (unsigned long) lb);
return(0);
}
ADD_CALL_CHAIN(result, GC_RETURN_ADDR);
return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", (word)0));
}
- void * GC_debug_generic_malloc_inner_ignore_off_page(size_t lb, int k)
+ GC_INNER void * GC_debug_generic_malloc_inner_ignore_off_page(size_t lb,
+ int k)
{
void * result = GC_generic_malloc_inner_ignore_off_page(
- lb + DEBUG_BYTES, k);
-
+ lb + DEBUG_BYTES, k);
+
if (result == 0) {
GC_err_printf("GC internal allocation (%lu bytes) returning NIL\n",
- (unsigned long) lb);
+ (unsigned long) lb);
return(0);
}
ADD_CALL_CHAIN(result, GC_RETURN_ADDR);
return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", (word)0));
}
-# endif
+#endif
#ifdef STUBBORN_ALLOC
GC_API void * GC_CALL GC_debug_malloc_stubborn(size_t lb, GC_EXTRA_PARAMS)
{
void * result = GC_malloc_stubborn(lb + DEBUG_BYTES);
-
+
if (result == 0) {
GC_err_printf("GC_debug_malloc(%lu) returning NIL (",
- (unsigned long) lb);
+ (unsigned long) lb);
GC_err_puts(s);
GC_err_printf(":%lu)\n", (unsigned long)i);
return(0);
}
if (!GC_debugging_started) {
- GC_start_debugging();
+ GC_start_debugging();
}
ADD_CALL_CHAIN(result, ra);
return (GC_store_debug_info(result, (word)lb, s, (word)i));
{
void * q = GC_base(p);
hdr * hhdr;
-
+
if (q == 0) {
GC_err_printf("Bad argument: %p to GC_debug_change_stubborn\n", p);
ABORT("GC_debug_change_stubborn: bad arg");
GC_API void GC_CALL GC_debug_end_stubborn_change(void *p)
{
- register void * q = GC_base(p);
- register hdr * hhdr;
-
+ void * q = GC_base(p);
+ hdr * hhdr;
+
if (q == 0) {
GC_err_printf("Bad argument: %p to GC_debug_end_stubborn_change\n", p);
ABORT("GC_debug_end_stubborn_change: bad arg");
}
/*ARGSUSED*/
-GC_API void GC_CALL GC_debug_change_stubborn(void *p)
-{
-}
+GC_API void GC_CALL GC_debug_change_stubborn(void *p) {}
/*ARGSUSED*/
-GC_API void GC_CALL GC_debug_end_stubborn_change(void *p)
-{
-}
+GC_API void GC_CALL GC_debug_end_stubborn_change(void *p) {}
#endif /* !STUBBORN_ALLOC */
GC_API void * GC_CALL GC_debug_malloc_atomic(size_t lb, GC_EXTRA_PARAMS)
{
void * result = GC_malloc_atomic(lb + DEBUG_BYTES);
-
+
if (result == 0) {
GC_err_printf("GC_debug_malloc_atomic(%lu) returning NIL (",
- (unsigned long) lb);
+ (unsigned long) lb);
GC_err_puts(s);
GC_err_printf(":%lu)\n", (unsigned long)i);
return(0);
GC_API char * GC_CALL GC_debug_strdup(const char *str, GC_EXTRA_PARAMS)
{
char *copy;
+ size_t lb;
if (str == NULL) return NULL;
- copy = GC_debug_malloc_atomic(strlen(str) + 1, OPT_RA s, i);
+ lb = strlen(str) + 1;
+ copy = GC_debug_malloc_atomic(lb, OPT_RA s, i);
if (copy == NULL) {
- errno = ENOMEM;
+# ifndef MSWINCE
+ errno = ENOMEM;
+# endif
return NULL;
}
- strcpy(copy, str);
+# ifndef MSWINCE
+ strcpy(copy, str);
+# else
+ /* strcpy() is deprecated in WinCE */
+ memcpy(copy, str, lb);
+# endif
return copy;
}
-GC_API void * GC_CALL GC_debug_malloc_uncollectable(size_t lb, GC_EXTRA_PARAMS)
+GC_API void * GC_CALL GC_debug_malloc_uncollectable(size_t lb,
+ GC_EXTRA_PARAMS)
{
void * result = GC_malloc_uncollectable(lb + UNCOLLECTABLE_DEBUG_BYTES);
-
+
if (result == 0) {
GC_err_printf("GC_debug_malloc_uncollectable(%lu) returning NIL (",
- (unsigned long) lb);
+ (unsigned long) lb);
GC_err_puts(s);
GC_err_printf(":%lu)\n", (unsigned long)i);
return(0);
}
#ifdef ATOMIC_UNCOLLECTABLE
-void * GC_debug_malloc_atomic_uncollectable(size_t lb, GC_EXTRA_PARAMS)
-{
+ void * GC_debug_malloc_atomic_uncollectable(size_t lb, GC_EXTRA_PARAMS)
+ {
void * result =
- GC_malloc_atomic_uncollectable(lb + UNCOLLECTABLE_DEBUG_BYTES);
-
+ GC_malloc_atomic_uncollectable(lb + UNCOLLECTABLE_DEBUG_BYTES);
+
if (result == 0) {
GC_err_printf(
- "GC_debug_malloc_atomic_uncollectable(%lu) returning NIL (",
+ "GC_debug_malloc_atomic_uncollectable(%lu) returning NIL (",
(unsigned long) lb);
GC_err_puts(s);
GC_err_printf(":%lu)\n", (unsigned long)i);
}
ADD_CALL_CHAIN(result, ra);
return (GC_store_debug_info(result, (word)lb, s, (word)i));
-}
+ }
#endif /* ATOMIC_UNCOLLECTABLE */
GC_API void GC_CALL GC_debug_free(void * p)
# ifndef SHORT_DBG_HDRS
ptr_t clobbered;
# endif
-
+
if (0 == p) return;
base = GC_base(p);
if (base == 0) {
}
if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
GC_err_printf(
- "GC_debug_free called on pointer %p w/o debugging info\n", p);
+ "GC_debug_free called on pointer %p w/o debugging info\n", p);
} else {
# ifndef SHORT_DBG_HDRS
clobbered = GC_check_annotated_obj((oh *)base);
if (GC_find_leak) {
GC_free(base);
} else {
- hdr * hhdr = HDR(p);
- GC_bool uncollectable = FALSE;
+ 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);
- } else {
- size_t i;
- size_t obj_sz = BYTES_TO_WORDS(hhdr -> hb_sz - sizeof(oh));
-
- for (i = 0; i < obj_sz; ++i) ((word *)p)[i] = 0xdeadbeef;
- GC_ASSERT((word *)p + i == (word *)(base + hhdr -> hb_sz));
- }
+ uncollectable = TRUE;
+ }
+# ifdef ATOMIC_UNCOLLECTABLE
+ if (hhdr -> hb_obj_kind == AUNCOLLECTABLE) {
+ uncollectable = TRUE;
+ }
+# endif
+ if (uncollectable) {
+ GC_free(base);
+ } else {
+ size_t i;
+ size_t obj_sz = BYTES_TO_WORDS(hhdr -> hb_sz - sizeof(oh));
+
+ for (i = 0; i < obj_sz; ++i) ((word *)p)[i] = 0xdeadbeef;
+ GC_ASSERT((word *)p + i == (word *)(base + hhdr -> hb_sz));
+ }
} /* !GC_find_leak */
}
-#ifdef THREADS
-
-extern void GC_free_inner(void * p);
-
-/* Used internally; we assume it's called correctly. */
-void GC_debug_free_inner(void * p)
-{
+#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 = GC_base(p);
GC_ASSERT((ptr_t)p - (ptr_t)base == sizeof(oh));
# ifndef SHORT_DBG_HDRS
((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)
size_t copy_sz = lb;
size_t old_sz;
hdr * hhdr;
-
+
if (p == 0) return(GC_debug_malloc(lb, OPT_RA s, i));
base = GC_base(p);
if (base == 0) {
result = GC_debug_malloc_atomic(lb, OPT_RA s, i);
break;
case UNCOLLECTABLE:
- result = GC_debug_malloc_uncollectable(lb, OPT_RA s, i);
- break;
+ 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;
+ result = GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i);
+ break;
# endif
default:
result = NULL; /* initialized to prevent warning. */
# endif
if (old_sz < copy_sz) copy_sz = old_sz;
if (result == 0) return(0);
- BCOPY(p, result, copy_sz);
+ BCOPY(p, result, copy_sz);
GC_debug_free(p);
return(result);
}
#ifndef SHORT_DBG_HDRS
-/* List of smashed objects. 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. */
+/* List of smashed objects. 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. */
#define MAX_SMASHED 20
-ptr_t GC_smashed[MAX_SMASHED];
-unsigned GC_n_smashed = 0;
+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)));
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. */
+ /* 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. */
+/* Print all objects on the list. Clear the list. */
STATIC void GC_print_all_smashed_proc(void)
{
unsigned i;
GC_err_printf("GC_check_heap_block: found smashed heap objects:\n");
for (i = 0; i < GC_n_smashed; ++i) {
GC_print_smashed_obj((ptr_t)GC_base(GC_smashed[i]) + sizeof(oh),
- GC_smashed[i]);
- GC_smashed[i] = 0;
+ 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. */
+/* Check all marked objects in the given block for validity */
+/* Avoid GC_apply_to_each_object for performance reasons. */
/*ARGSUSED*/
STATIC void GC_check_heap_block(struct hblk *hbp, word dummy)
{
size_t sz = hhdr -> hb_sz;
size_t bit_no;
char *p, *plim;
-
+
p = hbp->hb_body;
bit_no = 0;
if (sz > MAXOBJBYTES) {
- plim = p;
+ plim = p;
} else {
- plim = hbp->hb_body + HBLKSIZE - sz;
+ plim = hbp->hb_body + HBLKSIZE - sz;
}
/* go through all words in block */
- while( p <= plim ) {
- 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);
- }
- bit_no += MARK_BIT_OFFSET(sz);
- p += sz;
- }
+ while( p <= plim ) {
+ 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);
+ }
+ bit_no += MARK_BIT_OFFSET(sz);
+ p += sz;
+ }
}
-
-/* This assumes that all accessible objects are marked, and that */
-/* I hold the allocation lock. Normally called by collector. */
+/* 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)
{
# ifndef SMALL_CONFIG
GC_STATIC_ASSERT((sizeof(oh) & (GRANULE_BYTES - 1)) == 0);
- /* FIXME: Should we check for twice that alignment? */
+ /* FIXME: Should we check for twice that alignment? */
# endif
GC_apply_to_all_blocks(GC_check_heap_block, (word)0);
}
void * cl_data;
};
-void * GC_make_closure(GC_finalization_proc fn, void * 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);
+ GC_EXTRAS);
# else
(struct closure *) GC_malloc(sizeof (struct closure));
# endif
-
+
result -> cl_fn = fn;
result -> cl_data = data;
return((void *)result);
}
-void GC_CALLBACK GC_debug_invoke_finalizer(void * obj, void * data)
+/* 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)
{
- register struct closure * cl = (struct closure *) 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)-1
-/* 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)
+/* 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 non-debug finalizer.\n",
- obj);
+ obj);
/* This should probably be fatal. */
} else {
if (ofn) *ofn = my_old_cd -> cl_fn;
}
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 fn,
+ void * cd, GC_finalization_proc *ofn,
+ void * *ocd)
{
- GC_finalization_proc my_old_fn;
+ GC_finalization_proc my_old_fn = OFN_UNSET;
void * my_old_cd;
ptr_t base = GC_base(obj);
- if (0 == base) return;
+ if (0 == 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);
+ "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 {
GC_register_finalizer(base, GC_debug_invoke_finalizer,
- GC_make_closure(fn,cd), &my_old_fn, &my_old_cd);
+ GC_make_closure(fn,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)
+ (void * obj, GC_finalization_proc fn,
+ void * cd, GC_finalization_proc *ofn,
+ void * *ocd)
{
- GC_finalization_proc my_old_fn;
+ GC_finalization_proc my_old_fn = OFN_UNSET;
void * my_old_cd;
ptr_t base = GC_base(obj);
- if (0 == base) return;
+ if (0 == 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);
+ "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 {
GC_register_finalizer_no_order(base, GC_debug_invoke_finalizer,
- GC_make_closure(fn,cd), &my_old_fn,
- &my_old_cd);
+ GC_make_closure(fn,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)
+ (void * obj, GC_finalization_proc fn,
+ void * cd, GC_finalization_proc *ofn,
+ void * *ocd)
{
- GC_finalization_proc my_old_fn;
+ GC_finalization_proc my_old_fn = OFN_UNSET;
void * my_old_cd;
ptr_t base = GC_base(obj);
- if (0 == base) return;
+ if (0 == 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);
+ "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 {
GC_register_finalizer_unreachable(base, GC_debug_invoke_finalizer,
- GC_make_closure(fn,cd), &my_old_fn,
- &my_old_cd);
+ GC_make_closure(fn,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)
+ (void * obj, GC_finalization_proc fn,
+ void * cd, GC_finalization_proc *ofn,
+ void * *ocd)
{
- GC_finalization_proc my_old_fn;
+ GC_finalization_proc my_old_fn = OFN_UNSET;
void * my_old_cd;
ptr_t base = GC_base(obj);
- if (0 == base) return;
+ if (0 == 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);
+ "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 {
GC_register_finalizer_ignore_self(base, GC_debug_invoke_finalizer,
- GC_make_closure(fn,cd), &my_old_fn,
- &my_old_cd);
+ GC_make_closure(fn,cd), &my_old_fn,
+ &my_old_cd);
}
store_old(obj, my_old_fn, (struct closure *)my_old_cd, ofn, ocd);
}
projects / cacao.git / blobdiff