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VILLASnode/include/villas/queue.hpp

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C++

/** Wrapper around queue that uses POSIX CV's for signalling writes.
*
* @file
* @author Georg Martin Reinke <georg.reinke@rwth-aachen.de>
* @copyright 2014-2020, Institute for Automation of Complex Power Systems, EONERC
* @license GNU General Public License (version 3)
*
* VILLASnode
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program 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
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************************/
#pragma once
#include <mutex>
#include <queue>
namespace villas {
template<typename T>
class Queue {
protected:
std::queue<T> queue;
std::mutex mtx;
public:
void push(T p)
{
std::unique_lock<std::mutex> guard(mtx);
queue.push(p);
}
T pop()
{
std::unique_lock<std::mutex> guard(mtx);
T res = queue.front();
queue.pop();
return res;
}
bool empty()
{
std::unique_lock<std::mutex> guard(mtx);
return queue.empty();
}
};
} /* namespace villas */