mirror of
https://github.com/JvanKatwijk/dab-cmdline
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66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
#
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/*
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* Copyright (C) 2020
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* Jan van Katwijk (J.vanKatwijk@gmail.com)
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* Lazy Chair Computing
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*
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* This file is part of terminal-DAB
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*
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* terminal-DAB 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 2 of the License, or
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* (at your option) any later version.
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*
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* terminal-DAB 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 terminal-DAB; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __LOCKING_QUEUE__
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#define __LOCKING_QUEUE__
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#include <queue>
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#include <thread>
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#include <mutex>
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#include <chrono>
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#include <condition_variable>
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template <class job>
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class lockingQueue {
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private:
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std::queue <job> theQueue;
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mutex mtx;
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condition_variable cv;
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public:
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lockingQueue () {}
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~lockingQueue () {}
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void push (job content) {
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theQueue. push (content);
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std::unique_lock<mutex> lck (mtx);
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cv. notify_one ();
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}
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bool pop (int delay, job *out) {
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unique_lock <mutex> lck (mtx);
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job xxx;
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if (theQueue. size () == 0) {
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auto now = std::chrono::system_clock:: now ();
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cv. wait_until (lck, now + std::chrono::milliseconds (delay));
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}
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if (theQueue. size () == 0)
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return false;
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xxx = theQueue. front ();
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*out = xxx;
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theQueue. pop ();
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return true;
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}
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};
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#endif
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