/usr/include/Poco/Stopwatch.h is in libpoco-dev 1.3.6p1-5+deb8u1.
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// Stopwatch.h
//
// $Id: //poco/1.3/Foundation/include/Poco/Stopwatch.h#3 $
//
// Library: Foundation
// Package: DateTime
// Module: Stopwatch
//
// Definition of the Stopwatch class.
//
// 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.
//
#ifndef Foundation_Stopwatch_INCLUDED
#define Foundation_Stopwatch_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/Timestamp.h"
namespace Poco {
class Foundation_API Stopwatch
/// A simple facility to measure time intervals
/// with microsecond resolution.
///
/// Note that Stopwatch is based on the Timestamp
/// class. Therefore, if during a Stopwatch run,
/// the system time is changed, the measured time
/// will not be correct.
{
public:
Stopwatch();
~Stopwatch();
void start();
/// Starts (or restarts) the stopwatch.
void stop();
/// Stops or pauses the stopwatch.
void reset();
/// Resets the stopwatch.
void restart();
/// Resets and starts the stopwatch.
Timestamp::TimeDiff elapsed() const;
/// Returns the elapsed time in microseconds
/// since the stopwatch started.
int elapsedSeconds() const;
/// Returns the number of seconds elapsed
/// since the stopwatch started.
static Timestamp::TimeVal resolution();
/// Returns the resolution of the stopwatch.
private:
Stopwatch(const Stopwatch&);
Stopwatch& operator = (const Stopwatch&);
Timestamp _start;
Timestamp::TimeDiff _elapsed;
bool _running;
};
//
// inlines
//
inline void Stopwatch::start()
{
if (!_running)
{
_start.update();
_running = true;
}
}
inline void Stopwatch::stop()
{
if (_running)
{
Timestamp current;
_elapsed += current - _start;
_running = false;
}
}
inline int Stopwatch::elapsedSeconds() const
{
return int(elapsed()/resolution());
}
inline Timestamp::TimeVal Stopwatch::resolution()
{
return Timestamp::resolution();
}
} // namespace Poco
#endif // Foundation_Stopwatch_INCLUDED
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