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