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https://git.rwth-aachen.de/acs/public/villas/node/
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61 lines
1.5 KiB
C++
61 lines
1.5 KiB
C++
/** Wrapper around queue that uses POSIX CV's for signalling writes.
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*
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* @file
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* @author Georg Martin Reinke <georg.reinke@rwth-aachen.de>
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* @copyright 2014-2020, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLASnode
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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#pragma once
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#include <mutex>
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#include <condition_variable>
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#include <villas/queue.hpp>
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namespace villas {
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template<typename T>
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class QueueSignalled : public Queue<T> {
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private:
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std::condition_variable cv;
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public:
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void push(const T &data)
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{
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Queue<T>::push(data);
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cv.notify_one();
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}
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T pop()
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{
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std::unique_lock<std::mutex> l(Queue<T>::mtx);
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while (Queue<T>::queue.empty())
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cv.wait(l);
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T res = Queue<T>::queue.front();
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Queue<T>::queue.pop();
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return res;
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}
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};
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} /* namespace villas */
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