/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* $FreeBSD$
*/
/*
* Copyright 2006 Ricardo Correia. All rights reserved.
* Use is subject to license terms.
*/
#include <umem.h>
#include <stdlib.h>
#include <assert.h>
static umem_nofail_callback_t *nofail_cb = NULL;
struct umem_cache {
umem_constructor_t *constructor;
umem_destructor_t *destructor;
void *callback_data;
size_t bufsize;
};
/*
* Simple stub for umem_alloc(). The callback isn't expected to return.
*/
void *umem_alloc(size_t size, int flags)
{
assert(flags == UMEM_DEFAULT || flags == UMEM_NOFAIL);
if(size == 0)
return NULL;
void *ret = malloc(size);
if(ret == NULL) {
if(!(flags & UMEM_NOFAIL))
return NULL;
if(nofail_cb != NULL)
nofail_cb();
abort();
}
return ret;
}
/*
* Simple stub for umem_zalloc().
*/
void *umem_zalloc(size_t size, int flags)
{
assert(flags == UMEM_DEFAULT || flags == UMEM_NOFAIL);
if(size == 0)
return NULL;
void *ret = calloc(1, size);
if(ret == NULL) {
if(!(flags & UMEM_NOFAIL))
return NULL;
if(nofail_cb != NULL)
nofail_cb();
abort();
}
return ret;
}
/*
* Simple stub for umem_free().
*/
void umem_free(void *buf, size_t size)
{
free(buf);
}
/*
* Simple stub for umem_nofail_callback().
*/
void umem_nofail_callback(umem_nofail_callback_t *callback)
{
nofail_cb = callback;
}
/*
* Simple stub for umem_cache_create().
*/
umem_cache_t *umem_cache_create(char *debug_name, size_t bufsize, size_t align, umem_constructor_t *constructor, umem_destructor_t *destructor, umem_reclaim_t *reclaim, void *callback_data, void *source, int cflags)
{
assert(source == NULL);
umem_cache_t *cache = malloc(sizeof(umem_cache_t));
if(cache == NULL)
return NULL;
cache->constructor = constructor;
cache->destructor = destructor;
cache->callback_data = callback_data;
cache->bufsize = bufsize;
return cache;
}
/*
* Simple stub for umem_cache_alloc(). The nofail callback isn't expected to return.
*/
void *umem_cache_alloc(umem_cache_t *cache, int flags)
{
void *buf = malloc(cache->bufsize);
if(buf == NULL) {
if(!(flags & UMEM_NOFAIL))
return NULL;
if(nofail_cb != NULL)
nofail_cb();
abort();
}
if(cache->constructor != NULL) {
if(cache->constructor(buf, cache->callback_data, flags) != 0) {
free(buf);
if(!(flags & UMEM_NOFAIL))
return NULL;
if(nofail_cb != NULL)
nofail_cb();
abort();
}
}
return buf;
}
/*
* Simple stub for umem_cache_free().
*/
void umem_cache_free(umem_cache_t *cache, void *buffer)
{
if(cache->destructor != NULL)
cache->destructor(buffer, cache->callback_data);
free(buffer);
}
/*
* Simple stub for umem_cache_destroy().
*/
void umem_cache_destroy(umem_cache_t *cache)
{
free(cache);
}
