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/*
Replacement memory allocation handling etc.
Copyright (C) 1999-2005, Joe Orton <joe@manyfish.co.uk>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA
*/
#include "config.h"
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#include "ne_alloc.h"
static ne_oom_callback_fn oom;
void ne_oom_callback(ne_oom_callback_fn callback)
{
oom = callback;
}
#ifndef NEON_MEMLEAK
#define DO_MALLOC(ptr, len) do { \
ptr = malloc((len)); \
if (!ptr) { \
if (oom != NULL) \
oom(); \
abort(); \
} \
} while(0);
void *ne_malloc(size_t len)
{
void *ptr;
DO_MALLOC(ptr, len);
return ptr;
}
void *ne_calloc(size_t len)
{
void *ptr;
DO_MALLOC(ptr, len);
return memset(ptr, 0, len);
}
void *ne_realloc(void *ptr, size_t len)
{
void *ret = realloc(ptr, len);
if (!ret) {
if (oom)
oom();
abort();
}
return ret;
}
#ifdef WIN32
/* Implemented only to ensure free is bound to the correct DLL. */
void ne_free(void *ptr)
{
free(ptr);
}
#endif
char *ne_strdup(const char *s)
{
char *ret;
DO_MALLOC(ret, strlen(s) + 1);
return strcpy(ret, s);
}
char *ne_strndup(const char *s, size_t n)
{
char *new;
DO_MALLOC(new, n+1);
new[n] = '\0';
memcpy(new, s, n);
return new;
}
#else /* NEON_MEMLEAK */
#include <assert.h>
/* Memory-leak detection implementation: ne_malloc and friends are
* #defined to ne_malloc_ml etc by memleak.h, which is conditionally
* included by config.h. */
/* memory allocated be ne_*alloc, but not freed. */
size_t ne_alloc_used = 0;
static struct block {
void *ptr;
size_t len;
const char *file;
int line;
struct block *next;
} *blocks = NULL;
void ne_alloc_dump(FILE *f)
{
struct block *b;
for (b = blocks; b != NULL; b = b->next)
fprintf(f, "%" NE_FMT_SIZE_T "b@%s:%d%s", b->len, b->file, b->line,
b->next?", ":"");
}
static void *tracking_malloc(size_t len, const char *file, int line)
{
void *ptr = malloc((len));
struct block *block;
if (!ptr) {
if (oom) oom();
abort();
}
block = malloc(sizeof *block);
if (block != NULL) {
block->ptr = ptr;
block->len = len;
block->file = file;
block->line = line;
block->next = blocks;
blocks = block;
ne_alloc_used += len;
}
return ptr;
}
void *ne_malloc_ml(size_t size, const char *file, int line)
{
return tracking_malloc(size, file, line);
}
void *ne_calloc_ml(size_t size, const char *file, int line)
{
return memset(tracking_malloc(size, file, line), 0, size);
}
void *ne_realloc_ml(void *ptr, size_t s, const char *file, int line)
{
void *ret;
struct block *b;
if (ptr == NULL)
return tracking_malloc(s, file, line);
ret = realloc(ptr, s);
if (!ret) {
if (oom) oom();
abort();
}
for (b = blocks; b != NULL; b = b->next) {
if (b->ptr == ptr) {
ne_alloc_used += s - b->len;
b->ptr = ret;
b->len = s;
break;
}
}
assert(b != NULL);
return ret;
}
char *ne_strdup_ml(const char *s, const char *file, int line)
{
return strcpy(tracking_malloc(strlen(s) + 1, file, line), s);
}
char *ne_strndup_ml(const char *s, size_t n, const char *file, int line)
{
char *ret = tracking_malloc(n + 1, file, line);
ret[n] = '\0';
return memcpy(ret, s, n);
}
void ne_free_ml(void *ptr)
{
struct block *b, *last = NULL;
for (b = blocks; b != NULL; last = b, b = b->next) {
if (b->ptr == ptr) {
ne_alloc_used -= b->len;
if (last)
last->next = b->next;
else
blocks = b->next;
free(b);
break;
}
}
free(ptr);
}
#endif /* NEON_MEMLEAK */
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