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 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(lb + DEBUG_BYTES);
# ifdef GC_ADD_CALLER
if (s == NULL) {
GC_caller_func_offset(ra, &s, &i);
}
# endif
if (result == 0) {
GC_err_printf("GC_debug_malloc(%lu) returning NULL (%s:%d)\n",
(unsigned long)lb, s, i);
return(0);
}
if (!GC_debugging_started) {
GC_start_debugging();
}
ADD_CALL_CHAIN(result, ra);
return (GC_store_debug_info(result, (word)lb, s, i));
}
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);
}
