/usr/include/fcitx-utils/memory.h is in fcitx-libs-dev 1:4.2.9.1-1ubuntu1.
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* Copyright (C) 2012~2012 by CSSlayer *
* wengxt@gmail.com *
* *
* This program 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 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
/**
* @addtogroup FcitxUtils
* @{
*/
/**
* @file memory.h
*
* a simple naive memory pool for fcitx, scenerio is many small allocation,
* but don't need to free, or only free all the allocated memory at once.
*
* A common usage for simple memory pool
* @code
* FcitxMemoryPool* pool = fcitx_memory_pool_create();
* void* mem = fcitx_memory_pool_alloc(pool, 20);
* ...
* fcitx_memory_pool_destroy(pool);
* @endcode
*
* Memory pool will alloc new memory block by 8k, and mark the page to full when there
* is only 16 bytes left. It can achieve good performance and little memory foot print
* when you need a lot of small allocation.
*/
#ifndef _FCITX_MEMORY_H_
#define _FCITX_MEMORY_H_
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
/** memory pool private struct */
typedef struct _FcitxMemoryPool FcitxMemoryPool;
/**
* create a memroy pool
*
* @return FcitxMemoryPool*
**/
FcitxMemoryPool* fcitx_memory_pool_create();
/**
* allocate piece of memory from pool
*
* @param pool memory pool
* @param size size of wanted memory
* @return void*
**/
void* fcitx_memory_pool_alloc(FcitxMemoryPool* pool, size_t size);
#define fcitx_memory_pool_alloc(pool, size) \
fcitx_memory_pool_alloc_align(pool, size, 0)
void *fcitx_memory_pool_alloc_align(FcitxMemoryPool* pool,
size_t size, int align);
#define fcitx_memory_pool_alloc_align(pool, size, args...) \
_fcitx_memory_pool_alloc_align(pool, size, ##args, 1)
#define _fcitx_memory_pool_alloc_align(pool, size, align, ...) \
(fcitx_memory_pool_alloc_align)(pool, size, align)
/**
* free memory pool and free all the memory inside the pool
*
* @param pool memory ppol
* @return void
**/
void fcitx_memory_pool_destroy(FcitxMemoryPool* pool);
/**
* free all the memory inside the pool but keep the pool itself
*
* @param pool memory ppol
* @return void
* @since 4.2.6
**/
void fcitx_memory_pool_clear(FcitxMemoryPool* pool);
#ifdef __cplusplus
}
#endif
#endif
/**
* @}
*/
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