150 lines
4.3 KiB
Plaintext
150 lines
4.3 KiB
Plaintext
/* EINA - EFL data type library
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* Copyright (C) 2008 Cedric Bail
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library;
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* if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef EINA_INLINE_MEMPOOL_X_
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#define EINA_INLINE_MEMPOOL_X_
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#include <string.h>
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/**
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* @addtogroup Eina_Memory_Pool_Group Memory Pool
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*
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* @{
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*/
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/* Memory Pool */
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typedef struct _Eina_Mempool_Backend_ABI1 Eina_Mempool_Backend_ABI1;
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typedef struct _Eina_Mempool_Backend_ABI2 Eina_Mempool_Backend_ABI2;
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struct _Eina_Mempool_Backend
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{
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const char *name;
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void *(*init)(const char *context, const char *options, va_list args);
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void (*free)(void *data, void *element);
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void *(*alloc)(void *data, unsigned int size);
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void *(*realloc)(void *data, void *element, unsigned int size);
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void (*garbage_collect)(void *data);
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void (*statistics)(void *data);
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void (*shutdown)(void *data);
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void (*repack)(void *data, Eina_Mempool_Repack_Cb cb, void *cb_data);
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};
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struct _Eina_Mempool_Backend_ABI1
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{
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const char *name;
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void *(*init)(const char *context, const char *options, va_list args);
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void (*free)(void *data, void *element);
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void *(*alloc)(void *data, unsigned int size);
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void *(*realloc)(void *data, void *element, unsigned int size);
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void (*garbage_collect)(void *data);
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void (*statistics)(void *data);
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void (*shutdown)(void *data);
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};
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struct _Eina_Mempool_Backend_ABI2
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{
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void (*repack)(void *data, Eina_Mempool_Repack_Cb cb, void *cb_data);
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};
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struct _Eina_Mempool
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{
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Eina_Mempool_Backend_ABI1 backend;
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void *backend_data;
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Eina_Mempool_Backend_ABI2 *backend2;
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};
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/**
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* @brief Re-allocate an amount memory by the given mempool.
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*
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* @param mp The mempool.
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* @param element The element to re-allocate.
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* @param size The size in bytes to re-allocate.
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* @return The newly re-allocated data.
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*
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* This function re-allocates and returns @p element with @p size bytes using the
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* mempool @p mp. If not used anymore, the data must be freed with eina_mempool_free().
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* @warning No checks are done for @p mp.
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*/
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static inline void *
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eina_mempool_realloc(Eina_Mempool *mp, void *element, unsigned int size)
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{
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return mp->backend.realloc(mp->backend_data, element, size);
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}
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/**
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* @brief Allocate memory using the given mempool.
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*
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* @param mp The mempool.
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* @param size The size in bytes to allocate.
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* @return The newly allocated data.
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*
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* This function allocates and returns @p size bytes using the mempool @p mp.
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* If not used anymore, the data must be freed with eina_mempool_free().
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* @warning No checks are done for @p mp.
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*/
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static inline void *
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eina_mempool_malloc(Eina_Mempool *mp, unsigned int size)
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{
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return mp->backend.alloc(mp->backend_data, size);
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}
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/**
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* @brief Allocate and zero memory using the given mempool.
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*
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* @param mp The mempool.
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* @param size The size in bytes to allocate.
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* @return The newly allocated data.
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*
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* This function allocates, zeroes, and returns @p size bytes using the mempool @p mp.
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* If not used anymore, the data must be freed with eina_mempool_free().
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* @warning No checks are done for @p mp.
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* @since 1.2
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*/
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static inline void *
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eina_mempool_calloc(Eina_Mempool *mp, unsigned int size)
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{
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void *r = mp->backend.alloc(mp->backend_data, size);
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if (!r) return NULL;
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memset(r, 0, size);
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return r;
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}
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/**
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* @brief Free resources previously allocated by the given mempool.
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*
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* @param mp The mempool.
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* @param element The data to free.
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*
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* This function frees @p element allocated by @p mp. @p element must
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* have been obtained from eina_mempool_malloc(), eina_mempool_calloc(), or
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* eina_mempool_realloc().
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* @warning No checks are done for @p mp.
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*/
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static inline void
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eina_mempool_free(Eina_Mempool *mp, void *element)
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{
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if (!element) return ;
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mp->backend.free(mp->backend_data, element);
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}
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/**
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* @}
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*/
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#endif
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