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Diffstat (limited to 'src/lib/third_party/include/libcache.h')
-rw-r--r-- | src/lib/third_party/include/libcache.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/lib/third_party/include/libcache.h b/src/lib/third_party/include/libcache.h new file mode 100644 index 000000000..7f84b89ad --- /dev/null +++ b/src/lib/third_party/include/libcache.h @@ -0,0 +1,109 @@ +/** + * libcache.h + * +Copyright (c) 2017 William Guglielmo <william@deselmo.com> + +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, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS 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. + * + */ + + +#ifndef __DESELMO_LIBCACHE_H__ +#define __DESELMO_LIBCACHE_H__ + +#include <stdint.h> + +typedef struct cache_entry *cache_entry; + +typedef struct cache_entry_map *cache_entry_map; + +/** + * @brief Codes representing the result of some functions + * + */ +typedef enum cache_result { + CACHE_NO_ERROR = 0, /**< Returned by a function if no error occurs. */ + CACHE_CONTAINS_FALSE = 0, /**< Returned by function cache_contains if item is not present. */ + CACHE_CONTAINS_TRUE, /**< Returned by function cache_contains if item is present. */ + CACHE_INVALID_INPUT, /**< Returned by a function if it is called with invalid input parameters. */ + CACHE_REMOVE_NOT_FOUND, /**< Returned by function cache_remove if item is not present. */ + CACHE_MALLOC_ERROR /**< Returned by a function if a malloc fail. */ +} cache_result; + + +typedef struct cache *cache_t; + + +/** + * @brief Returns a new cache_t + * + * @par cache_max_size = max number of item that the new cache_t can contain + * @return a new cache_t, or NULL if an error occurred + * + */ +cache_t cache_new(uint32_t cache_max_size); + + +/** + * @brief Add an item in the specified cache_t + * + * @par cache = the cache_t + * @par item = pointer to the item to add + * @par item_size = size of the item + * @return a code representing the result of the function + * + */ +cache_result cache_add(cache_t cache, void *item, uint32_t item_size); + + +/** + * @brief Check if an item is in the specified cache_t + * + * @par cache = the cache_t + * @par item = pointer to the item to check + * @par item_size = size of the item + * @return a code representing the result of the function + * + */ +cache_result cache_contains(cache_t cache, void *item, uint32_t item_size); + + +/** + * @brief Remove an item in the specified cache_t + * + * @par cache = the cache_t + * @par item = pointer to the item to remove + * @par item_size = size of the item + * @return a code representing the result of the function + * + */ +cache_result cache_remove(cache_t cache, void *item, uint32_t item_size); + +/** + * @brief Free the specified cache_t + * + * @par alist = the cache + * + */ +void cache_free(cache_t cache); + +cache_entry cache_entry_new(void); +cache_entry_map cache_entry_map_new(void); + +#endif |