initial import

Foundation/src/Timer.cpp

@@ -0,0 +1,204 @@
+//
+// Timer.cpp
+//
+// $Id: //poco/1.1.0/Foundation/src/Timer.cpp#2 $
+//
+// Library: Foundation
+// Package: Threading
+// Module:  Timer
+//
+// Copyright (c) 2004-2006, 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.
+//
+
+
+#include "Foundation/Timer.h"
+#include "Foundation/ThreadPool.h"
+#include "Foundation/Exception.h"
+#include "Foundation/ErrorHandler.h"
+
+
+Foundation_BEGIN
+
+
+Timer::Timer(long startInterval, long periodicInterval): 
+	_startInterval(startInterval), 
+	_periodicInterval(periodicInterval),
+	_pCallback(0)
+{
+	poco_assert (startInterval >= 0 && periodicInterval >= 0);
+}
+
+
+Timer::~Timer()
+{
+	stop();
+}
+
+
+void Timer::start(const AbstractTimerCallback& method)
+{
+	poco_assert (!_pCallback);
+
+	FastMutex::ScopedLock lock(_mutex);	
+	_pCallback = method.clone();
+	_wakeUp.reset();
+	ThreadPool::defaultPool().start(*this);
+}
+
+
+void Timer::stop()
+{
+	FastMutex::ScopedLock lock(_mutex);
+	if (_pCallback)
+	{
+		_periodicInterval = 0;
+		_mutex.unlock();
+		_wakeUp.set();
+		_done.wait(); // warning: deadlock if called from timer callback
+		_mutex.lock();
+		delete _pCallback;
+		_pCallback = 0;
+	}
+}
+
+
+void Timer::restart()
+{
+	FastMutex::ScopedLock lock(_mutex);
+	if (_pCallback)
+	{
+		_wakeUp.set();
+	}
+}
+
+
+void Timer::restart(long milliseconds)
+{
+	poco_assert (milliseconds >= 0);
+	FastMutex::ScopedLock lock(_mutex);
+	if (_pCallback)
+	{
+		_periodicInterval = milliseconds;
+		_wakeUp.set();
+	}
+}
+
+
+long Timer::getStartInterval() const
+{
+	FastMutex::ScopedLock lock(_mutex);
+	return _startInterval;
+}
+
+
+void Timer::setStartInterval(long milliseconds)
+{
+	poco_assert (milliseconds >= 0);
+	FastMutex::ScopedLock lock(_mutex);
+	_startInterval = milliseconds;
+}
+
+
+long Timer::getPeriodicInterval() const
+{
+	FastMutex::ScopedLock lock(_mutex);
+	return _periodicInterval;
+}
+
+
+void Timer::setPeriodicInterval(long milliseconds)
+{
+	poco_assert (milliseconds >= 0);
+	FastMutex::ScopedLock lock(_mutex);
+	_periodicInterval = milliseconds;
+}
+
+
+void Timer::run()
+{
+	long interval;
+	{
+		FastMutex::ScopedLock lock(_mutex);
+		interval = _startInterval;
+	}
+	do
+	{
+		if (_wakeUp.tryWait(interval))
+		{
+			FastMutex::ScopedLock lock(_mutex);
+			interval = _periodicInterval;
+		}
+		else
+		{
+			try
+			{
+				_pCallback->invoke(*this);
+			}
+			catch (Exception& exc)
+			{
+				ErrorHandler::handle(exc);
+			}
+			catch (std::exception& exc)
+			{
+				ErrorHandler::handle(exc);
+			}
+			catch (...)
+			{
+				ErrorHandler::handle();
+			}
+			{
+				FastMutex::ScopedLock lock(_mutex);
+				interval = _periodicInterval;
+			}
+		}
+	}
+	while (interval > 0);
+	_done.set();
+}
+
+
+AbstractTimerCallback::AbstractTimerCallback()
+{
+}
+
+
+AbstractTimerCallback::AbstractTimerCallback(const AbstractTimerCallback& callback)
+{
+}
+
+
+AbstractTimerCallback::~AbstractTimerCallback()
+{
+}
+
+
+AbstractTimerCallback& AbstractTimerCallback::operator = (const AbstractTimerCallback& callback)
+{
+	return *this;
+}
+
+
+Foundation_END