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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
* connectionpool.h
*
* Wed Dec 16 12:20:44 CET 2009
* Copyright 2009 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Pracro.
*
* Pracro 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.
*
* Pracro 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 Pracro; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef __PRACRO_CONNECTIONPOOL_H__
#define __PRACRO_CONNECTIONPOOL_H__
#include <list>
#include "mutex.h"
#include "semaphore.h"
class Database;
class ConnectionPool {
public:
ConnectionPool();
void addDatabase(Database *db);
void removeDatabase(Database *db);
bool testFree(Database *db);
int numFreeDatabases();
Database *borrowDatabase();
void returnDatabase(Database *db);
private:
Semaphore semaphore;
Mutex mutex;
std::list<Database *> activedbs;
std::list<Database *> passivedbs;
};
class AutoBorrower {
public:
AutoBorrower(ConnectionPool &pool);
~AutoBorrower();
Database *db();
private:
ConnectionPool &pool;
Database *_db;
};
#endif/*__PRACRO_CONNECTIONPOOL_H__*/
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