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94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2009, Distributed Systems Architecture Group, Universidad */
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/* Complutense de Madrid (dsa-research.org) */
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/* */
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/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
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/* not use this file except in compliance with the License. You may obtain */
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/* a copy of the License at */
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/* */
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/* http://www.apache.org/licenses/LICENSE-2.0 */
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/* */
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/* Unless required by applicable law or agreed to in writing, software */
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/* distributed under the License is distributed on an "AS IS" BASIS, */
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/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
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/* See the License for the specific language governing permissions and */
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/* limitations under the License. */
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/* -------------------------------------------------------------------------- */
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#ifndef POOL_OBJECT_SQL_H_
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#define POOL_OBJECT_SQL_H_
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#include "SqliteDB.h"
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#include "ObjectSQL.h"
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#include <pthread.h>
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using namespace std;
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/**
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* PoolObject class. Provides a SQL backend interface for Pool components. Each
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* object is identified with and unique OID
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*
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* Note: The PoolObject provides a synchronization mechanism (mutex). This
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* implementation assumes that the mutex IS LOCKED when the class destructor
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* is called.
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*/
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class PoolObjectSQL : public ObjectSQL
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{
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public:
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PoolObjectSQL(int id=-1):oid(id)
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{
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pthread_mutex_init(&mutex,0);
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};
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virtual ~PoolObjectSQL()
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{
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pthread_mutex_unlock(&mutex);
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pthread_mutex_destroy(&mutex);
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};
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int get_oid() const
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{
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return oid;
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};
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/**
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* Function to lock the object
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*/
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void lock()
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{
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pthread_mutex_lock(&mutex);
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};
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/**
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* Function to unlock the object
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*/
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void unlock()
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{
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pthread_mutex_unlock(&mutex);
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};
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protected:
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/**
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* The object unique ID
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*/
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int oid;
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private:
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/**
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* The PoolSQL, friend to easily manipulate its Objects
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*/
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friend class PoolSQL;
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/**
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* The mutex for the PoolObject. This implementation assumes that the mutex
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* IS LOCKED when the class destructor is called.
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*/
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pthread_mutex_t mutex;
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};
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#endif /*POOL_OBJECT_SQL_H_*/
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