781dd5edb5
All these files were removed since accidental commit, revert and merge in 2.8. ea31f0ac3b877e + 0a4e170c28cec + 11f9a23a286c17f + 7b27b10fa6a6
78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
/*******************************************************************************
|
|
* 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.
|
|
******************************************************************************/
|
|
|
|
#pragma once
|
|
|
|
/**
|
|
* @file Barrier.h
|
|
* @ingroup util
|
|
* The Barrier class.
|
|
*/
|
|
|
|
#include "Audaspace.h"
|
|
|
|
#include <mutex>
|
|
#include <condition_variable>
|
|
|
|
AUD_NAMESPACE_BEGIN
|
|
/**
|
|
* This represents a barrier mechanism for thread sychronization.
|
|
*/
|
|
class Barrier
|
|
{
|
|
private:
|
|
/**
|
|
* A mutex needed to use a condition variable.
|
|
*/
|
|
std::mutex m_mutex;
|
|
|
|
/**
|
|
* Condition varieble used to sync threads.
|
|
*/
|
|
std::condition_variable m_condition;
|
|
|
|
/**
|
|
* Number of threads that need to reach the barrier for it to lift.
|
|
*/
|
|
unsigned int m_threshold;
|
|
|
|
/**
|
|
* Conter that count from threshold to 0.
|
|
*/
|
|
unsigned int m_count;
|
|
|
|
/**
|
|
* Variable used for predicate check in the condition variable wait.
|
|
*/
|
|
unsigned int m_generation;
|
|
|
|
// delete copy constructor and operator=
|
|
Barrier(const Barrier&) = delete;
|
|
Barrier& operator=(const Barrier&) = delete;
|
|
public:
|
|
/**
|
|
* Creates a new Barrier object.
|
|
* \param count the number of threads that need to reach the barrier for it to lift.
|
|
*/
|
|
Barrier(unsigned int count);
|
|
virtual ~Barrier();
|
|
|
|
/**
|
|
* Makes the caller thread wait until enough threads are stopped by this method.
|
|
*/
|
|
void wait();
|
|
};
|
|
AUD_NAMESPACE_END |