/usr/include/Poco/Util/Timer.h is in libpoco-dev 1.3.6p1-1ubuntu3.
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// Timer.h
//
// $Id: //poco/1.3/Util/include/Poco/Util/Timer.h#2 $
//
// Library: Util
// Package: Timer
// Module: Timer
//
// Definition of the Timer class.
//
// Copyright (c) 2009, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#ifndef Util_Timer_INCLUDED
#define Util_Timer_INCLUDED
#include "Poco/Util/Util.h"
#include "Poco/Util/TimerTask.h"
#include "Poco/TimedNotificationQueue.h"
#include "Poco/Thread.h"
#include "Poco/Runnable.h"
namespace Poco {
namespace Util {
class Util_API Timer: protected Poco::Runnable
/// A Timer allows to schedule tasks (TimerTask objects) for future execution
/// in a background thread. Tasks may be scheduled for one-time execution,
/// or for repeated execution at regular intervals.
///
/// The Timer object creates a thread that executes all scheduled tasks
/// sequentially. Therefore, tasks should complete their work as quickly
/// as possible, otherwise subsequent tasks may be delayed.
///
/// Timer is save for multithreaded use - multiple threads can schedule
/// new tasks simultaneously.
///
/// Acknowledgement: The interface of this class has been inspired by
/// the java.util.Timer class from Java 1.3.
{
public:
Timer();
/// Creates the Timer.
explicit Timer(Poco::Thread::Priority priority);
/// Creates the Timer, using a timer thread with
/// the given priority.
~Timer();
/// Destroys the Timer, cancelling all pending tasks.
void cancel();
/// Cancels all pending tasks.
///
/// If a task is currently running, it is allowed to finish.
void schedule(TimerTask::Ptr pTask, Poco::Timestamp time);
/// Schedules a task for execution at the specified time.
///
/// If the time lies in the past, the task is executed
/// immediately.
void schedule(TimerTask::Ptr pTask, long delay, long interval);
/// Schedules a task for periodic execution.
///
/// The task is first executed after the given delay.
/// Subsequently, the task is executed periodically with
/// the given interval in milliseconds between invocations.
void schedule(TimerTask::Ptr pTask, Poco::Timestamp time, long interval);
/// Schedules a task for periodic execution.
///
/// The task is first executed at the given time.
/// Subsequently, the task is executed periodically with
/// the given interval in milliseconds between invocations.
void scheduleAtFixedRate(TimerTask::Ptr pTask, long delay, long interval);
/// Schedules a task for periodic execution at a fixed rate.
///
/// The task is first executed after the given delay.
/// Subsequently, the task is executed periodically
/// every number of milliseconds specified by interval.
///
/// If task execution takes longer than the given interval,
/// further executions are delayed.
void scheduleAtFixedRate(TimerTask::Ptr pTask, Poco::Timestamp time, long interval);
/// Schedules a task for periodic execution at a fixed rate.
///
/// The task is first executed at the given time.
/// Subsequently, the task is executed periodically
/// every number of milliseconds specified by interval.
///
/// If task execution takes longer than the given interval,
/// further executions are delayed.
protected:
void run();
private:
Timer(const Timer&);
Timer& operator = (const Timer&);
Poco::TimedNotificationQueue _queue;
Poco::Thread _thread;
};
} } // namespace Poco::Util
#endif // Util_Timer_INCLUDED
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