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/*
* Copyright 2003-2017 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_SOCKET_TIMEOUT_MONITOR_HXX
#define MPD_SOCKET_TIMEOUT_MONITOR_HXX
#include "check.h"
#include <chrono>
class EventLoop;
/**
* This class monitors a timeout. Use Schedule() to begin the timeout
* or Cancel() to cancel it.
*
* This class is not thread-safe, all methods must be called from the
* thread that runs the #EventLoop, except where explicitly documented
* as thread-safe.
*/
class TimeoutMonitor {
friend class EventLoop;
EventLoop &loop;
/**
* When is this timer due? This is only valid if #active is
* true.
*/
std::chrono::steady_clock::time_point due;
bool active;
public:
TimeoutMonitor(EventLoop &_loop)
:loop(_loop), active(false) {
}
~TimeoutMonitor() {
Cancel();
}
EventLoop &GetEventLoop() {
return loop;
}
bool IsActive() const {
return active;
}
void Schedule(std::chrono::steady_clock::duration d);
void Cancel();
protected:
virtual void OnTimeout() = 0;
private:
void Run();
};
#endif /* MAIN_NOTIFY_H */
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