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82 lines
1.8 KiB
C++
82 lines
1.8 KiB
C++
/***
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This file is part of snapcast
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Copyright (C) 2014-2019 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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#include "watchdog.h"
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#include <chrono>
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using namespace std;
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Watchdog::Watchdog(WatchdogListener* listener) : listener_(listener), thread_(nullptr), active_(false)
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{
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}
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Watchdog::~Watchdog()
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{
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stop();
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}
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void Watchdog::start(size_t timeoutMs)
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{
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timeoutMs_ = timeoutMs;
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if (!thread_ || !active_)
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{
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active_ = true;
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thread_.reset(new thread(&Watchdog::worker, this));
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}
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else
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trigger();
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}
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void Watchdog::stop()
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{
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active_ = false;
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trigger();
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if (thread_ && thread_->joinable())
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thread_->join();
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thread_ = nullptr;
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}
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void Watchdog::trigger()
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{
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// std::unique_lock<std::mutex> lck(mtx_);
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cv_.notify_one();
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}
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void Watchdog::worker()
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{
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while (active_)
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{
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std::unique_lock<std::mutex> lck(mtx_);
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if (cv_.wait_for(lck, std::chrono::milliseconds(timeoutMs_)) == std::cv_status::timeout)
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{
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if (listener_)
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{
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listener_->onTimeout(this, timeoutMs_);
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break;
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}
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}
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}
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active_ = false;
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}
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