Barrier.h

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/* -*-c++-*- OpenThreads library, Copyright (C) 2002 - 2007  The Open Thread Group
 *
 * 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.
*/


//
// Barrier - C++ barrier class
// ~~~~~~~
//

#ifndef _OPENTHREADS_BARRIER_
#define _OPENTHREADS_BARRIER_

#include <OpenThreads/Exports>

namespace OpenThreads {


class OPENTHREAD_EXPORT_DIRECTIVE Barrier {

public:

    Barrier(int numThreads=0);

    virtual ~Barrier();

    virtual void reset();

    virtual void block(unsigned int numThreads=0);

    virtual void release();

    virtual int numThreadsCurrentlyBlocked();


    void invalidate();

private:

    Barrier(const Barrier &/*b*/) {};

    Barrier &operator=(const Barrier &/*b*/) {return *(this);};

    void *_prvData;


    bool _valid;

};

}

#endif // !_OPENTHREADS_BARRIER_