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/***************************************************************************
 *   Copyright (C) December 20, 2008 by Mattias Runge                             *
 *   mattias@runge.se                                                      *
 *   threadsafequeue.h                                            *
 *                                                                         *
 *   This program 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.                                   *
 *                                                                         *
 *   This program 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 this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef _THREADSAFEQUEUE_H
#define _THREADSAFEQUEUE_H

using namespace std;

#include <queue>
#include "mutex.h"

template <class T>
class ThreadSafeQueue
{
public:
    ThreadSafeQueue() {};
    ~ThreadSafeQueue() {};
    
    void push(T item)
    {
        myMutex.lock();
        myQueue.push(item);
        myMutex.unlock();
    }
    
    T pop()
    {
        myMutex.lock();
        T item = myQueue.front();
        myQueue.pop();
        myMutex.unlock();
        return item;
    }
    
    int size()
    {
        myMutex.lock();
        int size = myQueue.size();
        myMutex.unlock();
        return size;
    }

private:
    queue<T> myQueue;
    Mutex myMutex;
};

#endif  /* _THREADSAFEQUEUE_H */