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42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
/*
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* Original Author: Oliver Lorenz (ol), olli@olorenz.org, https://olorenz.org
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* License: This is licensed under the same terms as uthash itself
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*/
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#ifndef _CACHE_
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#define _CACHE_
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#include "uthash.h"
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#define KEY_MAX_LENGTH 32
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/**
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* A cache entry
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*/
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struct cache_entry
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{
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char *key; /**<The key */
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void *data; /**<Payload */
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UT_hash_handle hh; /**<Hash Handle for uthash */
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};
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/**
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* A cache object
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*/
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struct cache
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{
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size_t max_entries; /**<Amount of entries this cache object can hold */
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struct cache_entry *entries; /**<Head pointer for uthash */
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void (*free_cb) (void *element);/**<Callback function to free cache entries */
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};
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extern int cache_create(struct cache **dst, const size_t capacity,
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void (*free_cb) (void *element));
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extern int cache_delete(struct cache *cache, int keep_data);
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extern int cache_lookup(struct cache *cache, char *key, void *result);
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extern int cache_insert(struct cache *cache, char *key, void *data);
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extern int cache_remove(struct cache *cache, char *key);
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#endif
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