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125 lines
3.0 KiB
C++
125 lines
3.0 KiB
C++
//
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// Stopwatch.h
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//
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// $Id: //poco/svn/Foundation/include/Poco/Stopwatch.h#2 $
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//
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// Library: Foundation
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// Package: DateTime
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// Module: Stopwatch
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//
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// Definition of the Stopwatch class.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Foundation_Stopwatch_INCLUDED
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#define Foundation_Stopwatch_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/Timestamp.h"
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namespace Poco {
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class Foundation_API Stopwatch
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/// A simple facility to measure time intervals
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/// with microsecond resolution.
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{
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public:
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Stopwatch();
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~Stopwatch();
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void start();
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/// Starts (or restarts) the stopwatch.
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void stop();
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/// Stops or pauses the stopwatch.
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void reset();
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/// Resets the stopwatch.
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void restart();
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/// Resets and starts the stopwatch.
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Timestamp::TimeDiff elapsed() const;
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/// Returns the elapsed time in microseconds
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/// since the stopwatch started.
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int elapsedSeconds() const;
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/// Returns the number of seconds elapsed
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/// since the stopwatch started.
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static Timestamp::TimeVal resolution();
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/// Returns the resolution of the stopwatch.
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private:
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Stopwatch(const Stopwatch&);
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Stopwatch& operator = (const Stopwatch&);
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Timestamp _start;
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Timestamp::TimeDiff _elapsed;
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bool _running;
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};
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//
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// inlines
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//
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inline void Stopwatch::start()
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{
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_start.update();
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_running = true;
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}
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inline void Stopwatch::stop()
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{
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Timestamp current;
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_elapsed += current - _start;
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_running = false;
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}
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inline int Stopwatch::elapsedSeconds() const
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{
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return int(elapsed()/resolution());
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}
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inline Timestamp::TimeVal Stopwatch::resolution()
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{
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return Timestamp::resolution();
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}
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} // namespace Poco
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#endif // Foundation_Stopwatch_INCLUDED
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