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111 lines
1.8 KiB
C++
111 lines
1.8 KiB
C++
//
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// Stopwatch.h
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//
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// $Id: //poco/1.4/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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// SPDX-License-Identifier: BSL-1.0
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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/Clock.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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Clock::ClockDiff 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 Clock::ClockVal 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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Clock _start;
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Clock::ClockDiff _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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if (!_running)
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{
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_start.update();
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_running = true;
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}
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}
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inline void Stopwatch::stop()
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{
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if (_running)
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{
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Clock current;
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_elapsed += current - _start;
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_running = false;
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}
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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 Clock::ClockVal Stopwatch::resolution()
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{
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return Clock::resolution();
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}
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} // namespace Poco
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#endif // Foundation_Stopwatch_INCLUDED
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