188 lines
4.1 KiB
C
188 lines
4.1 KiB
C
/* EINA - EFL data type library
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* Copyright (C) 2007-2008 Jorge Luis Zapata Muga
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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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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <assert.h>
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#include "eina_mempool.h"
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#include "eina_list.h"
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#include "eina_module.h"
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#include "eina_private.h"
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/*============================================================================*
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* Local *
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*============================================================================*/
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static Eina_Module_Group *_group;
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static int _init_count = 0;
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struct _Eina_Mempool
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{
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#ifdef DEBUG
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unsigned int magic;
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#endif
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Eina_Module *module;
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Eina_Mempool_Backend *backend;
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void *backend_data;
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};
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static Eina_Mempool *
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_new_from_buffer(const char *module, const char *context, const char *options, va_list args)
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{
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Eina_Mempool *mp;
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Eina_Module *m;
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eina_error_set(0);
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m = eina_module_new(_group, module);
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if (!m) return NULL;
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if (eina_module_load(m) == EINA_FALSE) {
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eina_error_set(EINA_ERROR_NOT_MEMPOOL_MODULE);
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goto on_error;
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}
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mp = malloc(sizeof(Eina_Mempool));
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if (!mp) {
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eina_error_set(EINA_ERROR_OUT_OF_MEMORY);
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goto on_error;
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}
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mp->module = m;
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mp->backend = eina_module_export_object_get(m);
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mp->backend_data = mp->backend->init(context, options, args);
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return mp;
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on_error:
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if (m) eina_module_delete(m);
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return NULL;
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}
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/*============================================================================*
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* Global *
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*============================================================================*/
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/*============================================================================*
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* API *
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*============================================================================*/
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EAPI Eina_Error EINA_ERROR_NOT_MEMPOOL_MODULE = 0;
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/**
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*
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*/
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EAPI int
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eina_mempool_init(void)
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{
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if (!_init_count)
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{
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eina_module_init();
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_group = eina_module_group_new();
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if (!_group) return 0;
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eina_module_app_register(_group, "eina", "mp", NULL);
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EINA_ERROR_NOT_MEMPOOL_MODULE = eina_error_register("Not a memory pool module.");
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}
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/* get all the modules */
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return ++_init_count;
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}
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/**
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*
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*/
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EAPI int
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eina_mempool_shutdown(void)
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{
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if (!_init_count)
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return _init_count;
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_init_count--;
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if (!_init_count)
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{
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/* remove the list of modules */
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eina_module_group_delete(_group);
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eina_module_shutdown();
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}
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return _init_count;
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}
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/**
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*
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*/
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EAPI Eina_Mempool *
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eina_mempool_new(const char *name, const char *context, const char *options, ...)
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{
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Eina_Mempool *mp;
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va_list args;
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assert(name);
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va_start(args, options);
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mp = _new_from_buffer(name, context, options, args);
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va_end(args);
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return mp;
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}
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/**
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*
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*/
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EAPI void eina_mempool_delete(Eina_Mempool *mp)
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{
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assert(mp);
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mp->backend->shutdown(mp->backend_data);
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eina_module_unload(mp->module);
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free(mp);
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}
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/**
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*
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*/
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EAPI void * eina_mempool_realloc(Eina_Mempool *mp, void *element, unsigned int size)
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{
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assert(mp);
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assert(mp->backend->realloc);
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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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*
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*/
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EAPI void * eina_mempool_alloc(Eina_Mempool *mp, unsigned int size)
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{
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assert(mp);
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assert(mp->backend->alloc);
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return mp->backend->alloc(mp->backend_data, size);
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}
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/**
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*
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*/
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EAPI void eina_mempool_free(Eina_Mempool *mp, void *element)
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{
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assert(mp);
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assert(mp->backend->free);
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mp->backend->free(mp->backend_data, element);
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}
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