f0a75d274a
ZFS file system was ported from OpenSolaris operating system. The code in under CDDL license. I'd like to thank all SUN developers that created this great piece of software. Supported by: Wheel LTD (http://www.wheel.pl/) Supported by: The FreeBSD Foundation (http://www.freebsdfoundation.org/) Supported by: Sentex (http://www.sentex.net/)
168 lines
3.4 KiB
C
168 lines
3.4 KiB
C
/*
|
|
* 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
|
|
*/
|
|
/*
|
|
* 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);
|
|
}
|