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63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
/***
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This file is part of snapcast
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Copyright (C) 2014-2017 Johannes Pohl
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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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(at your option) any later version.
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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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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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#ifndef WATCH_DOG_H
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#define WATCH_DOG_H
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#include <mutex>
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#include <thread>
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#include <memory>
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#include <atomic>
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#include <condition_variable>
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class Watchdog;
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class WatchdogListener
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{
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public:
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virtual void onTimeout(const Watchdog* watchdog, size_t ms) = 0;
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};
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/// Watchdog
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class Watchdog
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{
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public:
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Watchdog(WatchdogListener* listener = nullptr);
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virtual ~Watchdog();
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void start(size_t timeoutMs);
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void stop();
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void trigger();
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private:
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WatchdogListener* listener_;
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std::condition_variable cv_;
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std::mutex mtx_;
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std::unique_ptr<std::thread> thread_;
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size_t timeoutMs_;
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std::atomic<bool> active_;
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void worker();
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};
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#endif
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