/* -*-c++-*- Producer - Copyright (C) 2001-2004  Don Burns
 *
 * This library is open source and may be redistributed and/or modified under
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 *
 * This library 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
 * OpenSceneGraph Public License for more details.
 */

#ifndef _PRODUCER_BLOCKING_QUEUE
#define _PRODUCER_BLOCKING_QUEUE 1

#include <deque>

#include <Producer/Referenced>
#include <Producer/Block>

#include <OpenThreads/Mutex>


namespace Producer {

template <class T>
class BlockingQueue : public Referenced, public std::deque<T>
{
    public:
        BlockingQueue() 
        { 
            _block = new Producer::Block;
        }

        void waitWhileEmpty() 
        {
            if( this->empty() )
                _block->reset();
            _block->block();
        }

        void push_back(const T &val)
        {
            OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mut);

#if defined(WIN32) && !defined(__GNUC__)
using namespace std;
            deque<T>::push_back(val);
#else
            std::deque<T>::push_back(val);
#endif
            _block->release();
        }

    protected:
        ~BlockingQueue() {}

    private:
        Producer::ref_ptr<Block> _block;
        OpenThreads::Mutex _mut;
};

}

#endif
