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/**************************************************************************
*
* Copyright 2008 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* @file
* Simple cache.
*
* @author Jose Fonseca <jfonseca@vmware.com>
*/
#ifndef U_CACHE_H_
#define U_CACHE_H_
#include "pipe/p_compiler.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* Least Recently Used (LRU) cache.
*/
struct util_cache;
/**
* Create a cache.
*
* @param hash hash function
* @param compare should return 0 for two equal keys
* @param destroy destruction callback (optional)
* @param size maximum number of entries
*/
struct util_cache *
util_cache_create(uint32_t (*hash)(const void *key),
int (*compare)(const void *key1, const void *key2),
void (*destroy)(void *key, void *value),
uint32_t size);
void
util_cache_set(struct util_cache *cache,
void *key,
void *value);
void *
util_cache_get(struct util_cache *cache,
const void *key);
void
util_cache_clear(struct util_cache *cache);
void
util_cache_destroy(struct util_cache *cache);
#ifdef __cplusplus
}
#endif
#endif /* U_CACHE_H_ */
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