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simple malloc counter for debugging. disabled so no functional change.

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Use when memory isnt being freed to easily set a breakpoint the Nth allocation.
This commit is contained in:
Campbell Barton 2010-02-13 13:09:06 +00:00
parent e92b5292c8
commit c1ee920db6
1 changed files with 40 additions and 0 deletions
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40
intern/guardedalloc/intern/mallocn.c
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@ -48,6 +48,23 @@
#include "MEM_guardedalloc.h"
/* Only for debugging:
* lets you count the allocations so as to find the allocator of unfreed memory
* in situations where the leak is pradictable */
// #define DEBUG_MEMCOUNTER
#ifdef DEBUG_MEMCOUNTER
#define DEBUG_MEMCOUNTER_ERROR_VAL 0 /* set this to the value that isnt being freed */
static int _mallocn_count = 0;
/* breakpoint here */
static void memcount_raise(const char *name)
{
fprintf(stderr, "%s: memcount-leak, %d\n", name, _mallocn_count);
}
#endif
/* --------------------------------------------------------------------- */
/* Data definition */
/* --------------------------------------------------------------------- */
@ -71,6 +88,9 @@ typedef struct MemHead {
const char * nextname;
int tag2;
int mmap; /* if true, memory was mmapped */
#ifdef DEBUG_MEMCOUNTER
int _count;
#endif
} MemHead;
typedef struct MemTail {
@ -283,6 +303,12 @@ void *MEM_mallocN(unsigned int len, const char *str)
mem_unlock_thread();
if(malloc_debug_memset && len)
memset(memh+1, 255, len);
#ifdef DEBUG_MEMCOUNTER
memh->_count= _mallocn_count++;
if(_mallocn_count==DEBUG_MEMCOUNTER_ERROR_VAL)
memcount_raise("MEM_mallocN");
#endif
return (++memh);
}
mem_unlock_thread();
@ -303,6 +329,11 @@ void *MEM_callocN(unsigned int len, const char *str)
if(memh) {
make_memhead_header(memh, len, str);
mem_unlock_thread();
#ifdef DEBUG_MEMCOUNTER
memh->_count= _mallocn_count++;
if(_mallocn_count==DEBUG_MEMCOUNTER_ERROR_VAL)
memcount_raise("MEM_callocN");
#endif
return (++memh);
}
mem_unlock_thread();
@ -340,6 +371,11 @@ void *MEM_mapallocN(unsigned int len, const char *str)
memh->mmap= 1;
mmap_in_use += len;
mem_unlock_thread();
#ifdef DEBUG_MEMCOUNTER
memh->_count= _mallocn_count++;
if(_mallocn_count==DEBUG_MEMCOUNTER_ERROR_VAL)
memcount_raise("MEM_mapallocN");
#endif
return (++memh);
}
else {
@ -453,7 +489,11 @@ static void MEM_printmemlist_internal( int pydict )
if (pydict) {
fprintf(stderr, "{'len':%i, 'name':'''%s''', 'pointer':'%p'},\\\n", membl->len, membl->name, membl+1);
} else {
#ifdef DEBUG_MEMCOUNTER
print_error("%s len: %d %p, count: %d\n",membl->name,membl->len, membl+1, membl->_count);
#else
print_error("%s len: %d %p\n",membl->name,membl->len, membl+1);
#endif
}
if(membl->next)
membl= MEMNEXT(membl->next);