242 lines
6.0 KiB
C
242 lines
6.0 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 <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "eina_mempool.h"
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#include "eina_hash.h"
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#include "eina_module.h"
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#include "eina_private.h"
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#include "eina_safety_checks.h"
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/*============================================================================*
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* Local *
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*============================================================================*/
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static Eina_Hash *_backends;
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static Eina_Array *_modules;
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static int _init_count = 0;
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static Eina_Mempool *
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_new_from_buffer(const char *name, const char *context, const char *options, va_list args)
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{
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Eina_Mempool_Backend *be;
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Eina_Mempool *mp;
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Eina_Error err = EINA_ERROR_NOT_MEMPOOL_MODULE;
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eina_error_set(0);
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be = eina_hash_find(_backends, name);
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if (!be)
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goto on_error;
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err = EINA_ERROR_OUT_OF_MEMORY;
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mp = malloc(sizeof(Eina_Mempool));
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if (!mp) goto on_error;
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/* FIXME why backend is not a pointer? */
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mp->backend = *be;
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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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eina_error_set(err);
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return NULL;
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}
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/* Built-in backend's prototypes */
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#ifdef EINA_STATIC_BUILD_CHAINED_POOL
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Eina_Bool chained_init(void);
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void chained_shutdown(void);
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#endif
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#ifdef EINA_STATIC_BUILD_PASS_THROUGH
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Eina_Bool pass_through_init(void);
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void pass_through_shutdown(void);
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#endif
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#ifdef EINA_STATIC_BUILD_EMEMOA_UNKNOWN
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Eina_Bool ememoa_unknown_init(void);
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void ememoa_unknown_shutdown(void);
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#endif
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#ifdef EINA_STATIC_BUILD_EMEMOA_FIXED
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Eina_Bool ememoa_fixed_init(void);
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void ememoa_fixed_shutdown(void);
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#endif
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#ifdef EINA_STATIC_BUILD_FIXED_BITMAP
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Eina_Bool fixed_bitmap_init(void);
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void fixed_bitmap_shutdown(void);
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#endif
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/*============================================================================*
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* Global *
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*============================================================================*/
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EAPI Eina_Bool eina_mempool_register(Eina_Mempool_Backend *be)
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{
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return eina_hash_add(_backends, be->name, be);
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}
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EAPI void eina_mempool_unregister(Eina_Mempool_Backend *be)
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{
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eina_hash_del(_backends, be->name, be);
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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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char *path;
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eina_hash_init();
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eina_module_init();
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EINA_ERROR_NOT_MEMPOOL_MODULE = eina_error_msg_register("Not a memory pool module.");
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_backends = eina_hash_string_superfast_new(NULL);
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/* dynamic backends */
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_modules = eina_module_list_get(NULL, PACKAGE_LIB_DIR "/eina/mp/", 0, NULL, NULL);
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path = eina_module_environment_path_get("HOME", "/.eina/mp/");
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_modules = eina_module_list_get(_modules, path, 0, NULL, NULL);
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if (path) free(path);
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path = eina_module_environment_path_get("EINA_MODULES_MEMPOOL_DIR", "/eina/mp/");
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_modules = eina_module_list_get(_modules, path, 0, NULL, NULL);
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if (path) free(path);
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path = eina_module_symbol_path_get(eina_mempool_init, "/eina/mp/");
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_modules = eina_module_list_get(_modules, path, 0, NULL, NULL);
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if (path) free(path);
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if (!_modules)
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{
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EINA_ERROR_PERR("ERROR: no mempool modules able to be loaded.\n");
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abort();
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}
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eina_module_list_load(_modules);
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/* builtin backends */
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#ifdef EINA_STATIC_BUILD_CHAINED_POOL
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chained_init();
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#endif
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#ifdef EINA_STATIC_BUILD_PASS_THROUGH
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pass_through_init();
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#endif
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#ifdef EINA_STATIC_BUILD_EMEMOA_UNKNOWN
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ememoa_unknown_init();
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#endif
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#ifdef EINA_STATIC_BUILD_EMEMOA_FIXED
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ememoa_fixed_init();
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#endif
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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 int
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eina_mempool_shutdown(void)
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{
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_init_count--;
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if (_init_count != 0) return _init_count;
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/* builtin backends */
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#ifdef EINA_STATIC_BUILD_CHAINED_POOL
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chained_shutdown();
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#endif
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#ifdef EINA_STATIC_BUILD_PASS_THROUGH
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pass_through_shutdown();
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#endif
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#ifdef EINA_STATIC_BUILD_EMEMOA_UNKNOWN
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ememoa_unknown_shutdown();
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#endif
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#ifdef EINA_STATIC_BUILD_EMEMOA_FIXED
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ememoa_fixed_shutdown();
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#endif
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/* dynamic backends */
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eina_module_list_unload(_modules);
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eina_module_shutdown();
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/* TODO delete the _modules list */
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eina_hash_shutdown();
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return 0;
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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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EINA_SAFETY_ON_NULL_RETURN_VAL(name, NULL);
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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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EINA_SAFETY_ON_NULL_RETURN(mp);
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EINA_SAFETY_ON_NULL_RETURN(mp->backend.shutdown);
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mp->backend.shutdown(mp->backend_data);
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free(mp);
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}
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EAPI void eina_mempool_gc(Eina_Mempool *mp)
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{
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EINA_SAFETY_ON_NULL_RETURN(mp);
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EINA_SAFETY_ON_NULL_RETURN(mp->backend.garbage_collect);
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mp->backend.garbage_collect(mp->backend_data);
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}
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EAPI void eina_mempool_statistics(Eina_Mempool *mp)
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{
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EINA_SAFETY_ON_NULL_RETURN(mp);
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EINA_SAFETY_ON_NULL_RETURN(mp->backend.statistics);
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mp->backend.statistics(mp->backend_data);
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}
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