Barrier.h

// This file is a part of the OpenSurgSim project.
// Copyright 2013, SimQuest Solutions Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Based on barrier.hpp from Boost 1.51
// Copyright (C) 2002-2003
// David Moore, William E. Kempf
// Copyright (C) 2007-8 Anthony Williams
//
// Which was distributed under the Boost Software License, Version 1.0.
// (See accomanying NOTICES or a copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef SURGSIM_FRAMEWORK_BARRIER_H
#define SURGSIM_FRAMEWORK_BARRIER_H

#include <boost/thread/mutex.hpp>
#include <boost/thread/condition_variable.hpp>
#include <string>
#include <stdexcept>

#include "SurgSim/Framework/Assert.h"

namespace SurgSim
{
namespace Framework
{

class Barrier
{
public:
    explicit Barrier(size_t count);

    bool wait(bool success);

private:
    boost::mutex m_mutex;
    boost::condition_variable m_cond;
    size_t m_threshold;
    size_t m_count;
    size_t m_generation;
    bool m_success;
    bool m_successResult;
};

} // namespace Framework
} // namespace SurgSim

#endif