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/*
* cache.c - Define the cache manager interface * * Copyright (C) 2013 - 2014, Max Lv <max.c.lv@gmail.com> * * This file is part of the shadowsocks-libev. * * shadowsocks-libev is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * shadowsocks-libev 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with pdnsd; see the file COPYING. If not, see * <http://www.gnu.org/licenses/>.
*/
/*
* Original Author: Oliver Lorenz (ol), olli@olorenz.org, https://olorenz.org
* License: This is licensed under the same terms as uthash itself */
#ifndef _CACHE_
#define _CACHE_
#include "uthash.h"
#define KEY_MAX_LENGTH 32
/**
* A cache entry */struct cache_entry{ char *key; /**<The key */ void *data; /**<Payload */ UT_hash_handle hh; /**<Hash Handle for uthash */};
/**
* A cache object */struct cache{ size_t max_entries; /**<Amount of entries this cache object can hold */ struct cache_entry *entries; /**<Head pointer for uthash */ void (*free_cb) (void *element);/**<Callback function to free cache entries */};
extern int cache_create(struct cache **dst, const size_t capacity, void (*free_cb) (void *element));extern int cache_delete(struct cache *cache, int keep_data);extern int cache_lookup(struct cache *cache, char *key, void *result);extern int cache_insert(struct cache *cache, char *key, void *data);extern int cache_remove(struct cache *cache, char *key);
#endif
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