* 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.
+ * Copyright (c) 1999-2004 Hewlett-Packard Development Company, L.P.
*
* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
# include <stdlib.h>
# if defined(LINUX) || defined(SUNOS4) || defined(SUNOS5) \
- || defined(HPUX) || defined(IRIX) || defined(OSF1)
+ || defined(HPUX) || defined(IRIX5) || defined(OSF1)
# define RANDOM() random()
# else
# define RANDOM() (long)rand()
(unsigned long)i);
switch(source) {
case GC_REFD_FROM_ROOT:
- GC_err_printf1("root at 0x%lx\n", (unsigned long)base);
+ GC_err_printf1("root at 0x%lx\n\n", (unsigned long)base);
goto out;
case GC_REFD_FROM_REG:
- GC_err_printf0("root in register\n");
+ GC_err_printf0("root in register\n\n");
goto out;
case GC_FINALIZER_REFD:
- GC_err_printf0("list of finalizable objects\n");
+ GC_err_printf0("list of finalizable objects\n\n");
goto out;
case GC_REFD_FROM_HEAP:
GC_err_printf1("offset %ld in object:\n", (unsigned long)offset);
/* Force a garbage collection and generate a backtrace from a */
/* random heap address. */
- void GC_generate_random_backtrace(void)
+ void GC_generate_random_backtrace_no_gc(void)
{
void * current;
- GC_gcollect();
current = GC_generate_random_valid_address();
- GC_printf1("Chose address 0x%lx in object\n", (unsigned long)current);
+ GC_printf1("\n****Chose address 0x%lx in object\n", (unsigned long)current);
GC_print_backtrace(current);
}
+ void GC_generate_random_backtrace(void)
+ {
+ GC_gcollect();
+ GC_generate_random_backtrace_no_gc();
+ }
+
#endif /* KEEP_BACK_PTRS */
+# define CROSSES_HBLK(p, sz) \
+ (((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(p, sz, string, integer)
/* But that's expensive. And this way things should only appear */
/* inconsistent while we're in the handler. */
LOCK();
+ GC_ASSERT(GC_size(p) >= sizeof(oh) + sz);
+ GC_ASSERT(!(SMALL_OBJ(sz) && CROSSES_HBLK(p, sz)));
# ifdef KEEP_BACK_PTRS
((oh *)p) -> oh_back_ptr = HIDE_BACK_PTR(NOT_MARKED);
# endif
/* 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. */
+ GC_ASSERT(GC_size(p) >= sizeof(oh) + sz);
+ GC_ASSERT(!(SMALL_OBJ(sz) && CROSSES_HBLK(p, sz)));
# ifdef KEEP_BACK_PTRS
((oh *)p) -> oh_back_ptr = HIDE_BACK_PTR(NOT_MARKED);
# endif
}
#endif /* !SHORT_DBG_HDRS */
+static GC_describe_type_fn GC_describe_type_fns[MAXOBJKINDS] = {0};
+
+void GC_register_describe_type_fn(kind, 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. */
+void GC_print_type(p)
+ptr_t p;
+{
+ hdr * hhdr = GC_find_header(p);
+ char buffer[GC_TYPE_DESCR_LEN + 1];
+ 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);
+ } 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_printf2("kind %ld, descr 0x%lx", kind, hhdr -> hb_descr);
+ }
+ }
+}
+
+
+
void GC_print_obj(p)
ptr_t p;
{
register oh * ohdr = (oh *)GC_base(p);
+ GC_ASSERT(!I_HOLD_LOCK());
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));
+ GC_err_printf1(":%ld, ", (unsigned long)(ohdr -> oh_int));
# else
- GC_err_printf2(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int),
+ GC_err_printf2(":%ld, sz=%ld, ", (unsigned long)(ohdr -> oh_int),
(unsigned long)(ohdr -> oh_sz));
# endif
+ GC_print_type((ptr_t)(ohdr + 1));
+ GC_err_puts(")\n");
PRINT_CALL_CHAIN(ohdr);
}
ptr_t p;
# endif
{
+ GC_ASSERT(!I_HOLD_LOCK());
if (GC_HAS_DEBUG_INFO(p)) {
GC_print_obj(p);
} else {
{
register oh * ohdr = (oh *)GC_base(p);
+ GC_ASSERT(!I_HOLD_LOCK());
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))
void GC_check_heap_proc GC_PROTO((void));
+void GC_print_all_smashed_proc GC_PROTO((void));
+
void GC_do_nothing() {}
void GC_start_debugging()
{
# 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((word)sizeof(oh));
}
+size_t GC_debug_header_size = sizeof(oh);
+
# if defined(__STDC__) || defined(__cplusplus)
void GC_debug_register_displacement(GC_word offset)
# else
return (GC_store_debug_info(result, (word)lb, s, (word)i));
}
+# ifdef __STDC__
+ GC_PTR GC_debug_malloc_ignore_off_page(size_t lb, GC_EXTRA_PARAMS)
+# else
+ GC_PTR GC_debug_malloc_ignore_off_page(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_ignore_off_page(lb + DEBUG_BYTES);
+
+ if (result == 0) {
+ GC_err_printf1("GC_debug_malloc_ignore_off_page(%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_atomic_ignore_off_page(size_t lb, GC_EXTRA_PARAMS)
+# else
+ GC_PTR GC_debug_malloc_atomic_ignore_off_page(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_atomic_ignore_off_page(lb + DEBUG_BYTES);
+
+ if (result == 0) {
+ GC_err_printf1("GC_debug_malloc_atomic_ignore_off_page(%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.
(unsigned long) lb);
return(0);
}
- ADD_CALL_CHAIN(result, ra);
+ ADD_CALL_CHAIN(result, GC_RETURN_ADDR);
return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", (word)0));
}
(unsigned long) lb);
return(0);
}
- ADD_CALL_CHAIN(result, ra);
+ ADD_CALL_CHAIN(result, GC_RETURN_ADDR);
return (GC_store_debug_info_inner(result, (word)lb, "INTERNAL", (word)0));
}
# endif
int i;
# endif
{
- GC_PTR result = GC_malloc_uncollectable(lb + DEBUG_BYTES);
+ GC_PTR result = GC_malloc_uncollectable(lb + UNCOLLECTABLE_DEBUG_BYTES);
if (result == 0) {
GC_err_printf1("GC_debug_malloc_uncollectable(%ld) returning NIL (",
int i;
# endif
{
- GC_PTR result = GC_malloc_atomic_uncollectable(lb + DEBUG_BYTES);
+ GC_PTR result =
+ GC_malloc_atomic_uncollectable(lb + UNCOLLECTABLE_DEBUG_BYTES);
if (result == 0) {
GC_err_printf1(
uncollectable = TRUE;
}
# endif
- if (uncollectable) GC_free(base);
+ if (uncollectable) {
+ GC_free(base);
+ } else {
+ size_t i;
+ size_t obj_sz = hhdr -> hb_sz - BYTES_TO_WORDS(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 */
}
}
#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. */
+#define MAX_SMASHED 20
+ptr_t GC_smashed[MAX_SMASHED];
+unsigned GC_n_smashed = 0;
+
+# if defined(__STDC__) || defined(__cplusplus)
+ void GC_add_smashed(ptr_t smashed)
+# else
+ void GC_add_smashed(smashed)
+ ptr_t smashed;
+#endif
+{
+ 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. */
+ GC_have_errors = TRUE;
+}
+
+/* Print all objects on the list. Clear the list. */
+void GC_print_all_smashed_proc ()
+{
+ unsigned i;
+
+ GC_ASSERT(!I_HOLD_LOCK());
+ if (GC_n_smashed == 0) return;
+ GC_err_printf0("GC_check_heap_block: found smashed heap objects:\n");
+ for (i = 0; i < GC_n_smashed; ++i) {
+ GC_print_smashed_obj(GC_base(GC_smashed[i]), GC_smashed[i]);
+ GC_smashed[i] = 0;
+ }
+ GC_n_smashed = 0;
+}
+
/* Check all marked objects in the given block for validity */
/*ARGSUSED*/
# if defined(__STDC__) || defined(__cplusplus)
&& 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);
- }
+ if (clobbered != 0) GC_add_smashed(clobbered);
}
word_no += sz;
p += sz;
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");
- }
+# ifdef ALIGN_DOUBLE
+ GC_STATIC_ASSERT((sizeof(oh) & (2 * sizeof(word) - 1)) == 0);
+# else
+ GC_STATIC_ASSERT((sizeof(oh) & (sizeof(word) - 1)) == 0);
+# endif
# endif
GC_apply_to_all_blocks(GC_check_heap_block, (word)0);
}
# 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
+# 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;
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)) {
+ if (0 == base) return;
+ if ((ptr_t)obj - base != sizeof(oh)) {
GC_err_printf1(
- "GC_register_finalizer called with non-base-pointer 0x%lx\n",
+ "GC_debug_register_finalizer called with non-base-pointer 0x%lx\n",
obj);
}
if (0 == fn) {
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)) {
+ if (0 == base) return;
+ if ((ptr_t)obj - base != sizeof(oh)) {
GC_err_printf1(
- "GC_register_finalizer_no_order called with non-base-pointer 0x%lx\n",
+ "GC_debug_register_finalizer_no_order called with non-base-pointer 0x%lx\n",
obj);
}
if (0 == fn) {
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)) {
+ if (0 == base) return;
+ if ((ptr_t)obj - base != sizeof(oh)) {
GC_err_printf1(
- "GC_register_finalizer_ignore_self called with non-base-pointer 0x%lx\n",
+ "GC_debug_register_finalizer_ignore_self called with non-base-pointer 0x%lx\n",
obj);
}
if (0 == fn) {
OSDN Git Service
