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Annotation of embedaddon/strongswan/src/libstrongswan/database/database_factory.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2008 Martin Willi
        !             3:  * HSR Hochschule fuer Technik Rapperswil
        !             4:  *
        !             5:  * This program is free software; you can redistribute it and/or modify it
        !             6:  * under the terms of the GNU General Public License as published by the
        !             7:  * Free Software Foundation; either version 2 of the License, or (at your
        !             8:  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
        !             9:  *
        !            10:  * This program is distributed in the hope that it will be useful, but
        !            11:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            12:  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
        !            13:  * for more details.
        !            14:  */
        !            15: 
        !            16: #include "database_factory.h"
        !            17: 
        !            18: #include <collections/linked_list.h>
        !            19: #include <threading/mutex.h>
        !            20: 
        !            21: typedef struct private_database_factory_t private_database_factory_t;
        !            22: 
        !            23: /**
        !            24:  * private data of database_factory
        !            25:  */
        !            26: struct private_database_factory_t {
        !            27: 
        !            28:        /**
        !            29:         * public functions
        !            30:         */
        !            31:        database_factory_t public;
        !            32: 
        !            33:        /**
        !            34:         * list of registered database_t implementations
        !            35:         */
        !            36:        linked_list_t *databases;
        !            37: 
        !            38:        /**
        !            39:         * mutex to lock access to databases
        !            40:         */
        !            41:        mutex_t *mutex;
        !            42: };
        !            43: 
        !            44: METHOD(database_factory_t, create, database_t*,
        !            45:        private_database_factory_t *this, char *uri)
        !            46: {
        !            47:        enumerator_t *enumerator;
        !            48:        database_t *database = NULL;
        !            49:        database_constructor_t create;
        !            50: 
        !            51:        this->mutex->lock(this->mutex);
        !            52:        enumerator = this->databases->create_enumerator(this->databases);
        !            53:        while (enumerator->enumerate(enumerator, &create))
        !            54:        {
        !            55:                database = create(uri);
        !            56:                if (database)
        !            57:                {
        !            58:                        break;
        !            59:                }
        !            60:        }
        !            61:        enumerator->destroy(enumerator);
        !            62:        this->mutex->unlock(this->mutex);
        !            63:        return database;
        !            64: }
        !            65: 
        !            66: METHOD(database_factory_t, add_database, void,
        !            67:        private_database_factory_t *this, database_constructor_t create)
        !            68: {
        !            69:        this->mutex->lock(this->mutex);
        !            70:        this->databases->insert_last(this->databases, create);
        !            71:        this->mutex->unlock(this->mutex);
        !            72: }
        !            73: 
        !            74: METHOD(database_factory_t, remove_database, void,
        !            75:        private_database_factory_t *this, database_constructor_t create)
        !            76: {
        !            77:        this->mutex->lock(this->mutex);
        !            78:        this->databases->remove(this->databases, create, NULL);
        !            79:        this->mutex->unlock(this->mutex);
        !            80: }
        !            81: 
        !            82: METHOD(database_factory_t, destroy, void,
        !            83:        private_database_factory_t *this)
        !            84: {
        !            85:        this->databases->destroy(this->databases);
        !            86:        this->mutex->destroy(this->mutex);
        !            87:        free(this);
        !            88: }
        !            89: 
        !            90: /*
        !            91:  * see header file
        !            92:  */
        !            93: database_factory_t *database_factory_create()
        !            94: {
        !            95:        private_database_factory_t *this;
        !            96: 
        !            97:        INIT(this,
        !            98:                .public = {
        !            99:                        .create = _create,
        !           100:                        .add_database = _add_database,
        !           101:                        .remove_database = _remove_database,
        !           102:                        .destroy = _destroy,
        !           103:                },
        !           104:                .databases = linked_list_create(),
        !           105:                .mutex = mutex_create(MUTEX_TYPE_DEFAULT),
        !           106:        );
        !           107: 
        !           108:        return &this->public;
        !           109: }
        !           110: