125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
// stb_leakcheck.h - v0.2 - quick & dirty malloc leak-checking - public domain
|
|
// LICENSE
|
|
//
|
|
// This software is in the public domain. Where that dedication is not
|
|
// recognized, you are granted a perpetual, irrevocable license to copy,
|
|
// distribute, and modify this file as you see fit.
|
|
|
|
#ifdef STB_LEAKCHECK_IMPLEMENTATION
|
|
#undef STB_LEAKCHECK_IMPLEMENTATION // don't implenment more than once
|
|
|
|
// if we've already included leakcheck before, undefine the macros
|
|
#ifdef malloc
|
|
#undef malloc
|
|
#undef free
|
|
#undef realloc
|
|
#endif
|
|
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <stddef.h>
|
|
typedef struct malloc_info stb_leakcheck_malloc_info;
|
|
|
|
struct malloc_info
|
|
{
|
|
char *file;
|
|
int line;
|
|
size_t size;
|
|
stb_leakcheck_malloc_info *next,*prev;
|
|
};
|
|
|
|
static stb_leakcheck_malloc_info *mi_head;
|
|
|
|
void *stb_leakcheck_malloc(size_t sz, char *file, int line)
|
|
{
|
|
stb_leakcheck_malloc_info *mi = (stb_leakcheck_malloc_info *) malloc(sz + sizeof(*mi));
|
|
if (mi == NULL) return mi;
|
|
mi->file = file;
|
|
mi->line = line;
|
|
mi->next = mi_head;
|
|
if (mi_head)
|
|
mi->next->prev = mi;
|
|
mi->prev = NULL;
|
|
mi->size = (int) sz;
|
|
mi_head = mi;
|
|
return mi+1;
|
|
}
|
|
|
|
void stb_leakcheck_free(void *ptr)
|
|
{
|
|
if (ptr != NULL) {
|
|
stb_leakcheck_malloc_info *mi = (stb_leakcheck_malloc_info *) ptr - 1;
|
|
mi->size = ~mi->size;
|
|
#ifndef STB_LEAKCHECK_SHOWALL
|
|
if (mi->prev == NULL) {
|
|
assert(mi_head == mi);
|
|
mi_head = mi->next;
|
|
} else
|
|
mi->prev->next = mi->next;
|
|
if (mi->next)
|
|
mi->next->prev = mi->prev;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void *stb_leakcheck_realloc(void *ptr, size_t sz, char *file, int line)
|
|
{
|
|
if (ptr == NULL) {
|
|
return stb_leakcheck_malloc(sz, file, line);
|
|
} else if (sz == 0) {
|
|
stb_leakcheck_free(ptr);
|
|
return NULL;
|
|
} else {
|
|
stb_leakcheck_malloc_info *mi = (stb_leakcheck_malloc_info *) ptr - 1;
|
|
if (sz <= mi->size)
|
|
return ptr;
|
|
else {
|
|
#ifdef STB_LEAKCHECK_REALLOC_PRESERVE_MALLOC_FILELINE
|
|
void *q = stb_leakcheck_malloc(sz, mi->file, mi->line);
|
|
#else
|
|
void *q = stb_leakcheck_malloc(sz, file, line);
|
|
#endif
|
|
if (q) {
|
|
memcpy(q, ptr, mi->size);
|
|
stb_leakcheck_free(ptr);
|
|
}
|
|
return q;
|
|
}
|
|
}
|
|
}
|
|
|
|
void stb_leakcheck_dumpmem(void)
|
|
{
|
|
stb_leakcheck_malloc_info *mi = mi_head;
|
|
while (mi) {
|
|
if ((ptrdiff_t) mi->size >= 0)
|
|
printf("LEAKED: %s (%4d): %8z bytes at %p\n", mi->file, mi->line, mi->size, mi+1);
|
|
mi = mi->next;
|
|
}
|
|
#ifdef STB_LEAKCHECK_SHOWALL
|
|
mi = mi_head;
|
|
while (mi) {
|
|
if ((ptrdiff_t) mi->size < 0)
|
|
printf("FREED : %s (%4d): %8z bytes at %p\n", mi->file, mi->line, ~mi->size, mi+1);
|
|
mi = mi->next;
|
|
}
|
|
#endif
|
|
}
|
|
#endif // STB_LEAKCHECK_IMPLEMENTATION
|
|
|
|
#ifndef INCLUDE_STB_LEAKCHECK_H
|
|
#define INCLUDE_STB_LEAKCHECK_H
|
|
|
|
#define malloc(sz) stb_leakcheck_malloc(sz, __FILE__, __LINE__)
|
|
#define free(p) stb_leakcheck_free(p)
|
|
#define realloc(p,sz) stb_leakcheck_realloc(p,sz, __FILE__, __LINE__)
|
|
|
|
extern void * stb_leakcheck_malloc(size_t sz, char *file, int line);
|
|
extern void * stb_leakcheck_realloc(void *ptr, size_t sz, char *file, int line);
|
|
extern void stb_leakcheck_free(void *ptr);
|
|
extern void stb_leakcheck_dumpmem(void);
|
|
|
|
#endif // INCLUDE_STB_LEAKCHECK_H
|