104 lines
2.5 KiB
C++
104 lines
2.5 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_STOP_WATCH_H
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#define NL_STOP_WATCH_H
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#include "types_nl.h"
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#include "time_nl.h"
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#include <deque>
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namespace NLMISC {
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typedef uint32 TTickDuration;
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typedef uint32 TMsDuration;
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/**
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* Stopwatch class used for performance measurements and statistics.
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* To measure the duration of a cycle, call stop(), get the results, then call start().
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* \author Olivier Cado
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* \author Nevrax France
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* \date 2001
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*/
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class CStopWatch
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{
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public:
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/// Constructor. Set a non-zero queueLength for partial average calculation
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CStopWatch( uint queueLength=0 );
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/// Begin measurement
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void start();
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/// Pause
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void pause();
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/// Resume
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void resume();
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/// Add time (in ticks unit) to the current measurement
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void addTime( TTickDuration t );
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/// End measurement
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void stop();
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/// Add an external duration (in ticks unit) to the average queue
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void addMeasurement( TTickDuration t );
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/// Elapsed time in millisecond (call it after stop())
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TMsDuration getDuration() const;
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/// Average duration of the queueLength last durations (using the queueLength argument specified in the constructor)
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TMsDuration getPartialAverage() const;
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/// Average of the duration
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TMsDuration getAverageDuration() const;
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/// Sum of the measured durations (in ticks)
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TTickDuration sumTicks() const { return _SumTicks; }
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/// Number of measurements
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uint32 measurementNumber() const { return _MeasurementNumber; }
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private:
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TTicks _BeginTime;
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TTickDuration _ElapsedTicks;
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TTickDuration _SumTicks;
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uint32 _MeasurementNumber;
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std::deque<TTickDuration> _Queue;
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uint _QLength;
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};
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} // NLMISC
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#endif // NL_STOP_WATCH_H
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/* End of stop_watch.h */
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