mirror of
https://github.com/42wim/matterbridge.git
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88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
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/*
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* Copyright (c) 2020 Samsung Electronics Co., Ltd. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef VTASKQUEUE_H
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#define VTASKQUEUE_H
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#include <deque>
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template <typename Task>
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class TaskQueue {
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using lock_t = std::unique_lock<std::mutex>;
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std::deque<Task> _q;
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bool _done{false};
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std::mutex _mutex;
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std::condition_variable _ready;
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public:
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bool try_pop(Task &task)
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{
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lock_t lock{_mutex, std::try_to_lock};
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if (!lock || _q.empty()) return false;
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task = std::move(_q.front());
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_q.pop_front();
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return true;
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}
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bool try_push(Task &&task)
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{
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{
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lock_t lock{_mutex, std::try_to_lock};
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if (!lock) return false;
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_q.push_back(std::move(task));
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}
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_ready.notify_one();
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return true;
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}
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void done()
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{
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{
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lock_t lock{_mutex};
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_done = true;
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}
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_ready.notify_all();
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}
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bool pop(Task &task)
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{
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lock_t lock{_mutex};
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while (_q.empty() && !_done) _ready.wait(lock);
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if (_q.empty()) return false;
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task = std::move(_q.front());
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_q.pop_front();
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return true;
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}
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void push(Task &&task)
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{
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{
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lock_t lock{_mutex};
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_q.push_back(std::move(task));
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}
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_ready.notify_one();
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}
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};
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#endif // VTASKQUEUE_H
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