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/*******************************************************************************
* Copyright 2015-2016 Juan Francisco Crespo Galán
*
* 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.
******************************************************************************/
#include "util/Barrier.h"
AUD_NAMESPACE_BEGIN
Barrier::Barrier(unsigned int count) :
m_threshold(count), m_count(count), m_generation(0)
{
}
Barrier::~Barrier()
{
}
void Barrier::wait()
{
std::unique_lock<std::mutex> lck(m_mutex);
int gen = m_generation;
if(!--m_count)
{
m_count = m_threshold;
m_generation++;
m_condition.notify_all();
}
else
m_condition.wait(lck, [this, gen] { return gen != m_generation; });
}
AUD_NAMESPACE_END
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