95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
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/*
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*
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* Copyright (C) 1999-2012, OFFIS e.V.
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* All rights reserved. See COPYRIGHT file for details.
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*
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* This software and supporting documentation were developed by
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*
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* OFFIS e.V.
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* R&D Division Health
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* Escherweg 2
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* D-26121 Oldenburg, Germany
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*
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*
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* Module: ofstd
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*
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* Author: Joerg Riesmeier
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*
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* Purpose: Class for measurement of time (Header)
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*
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*/
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#ifndef OFTIMER_H
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#define OFTIMER_H
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#include "dcmtk/config/osconfig.h"
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#include "dcmtk/ofstd/ofstream.h"
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#include "dcmtk/ofstd/ofdefine.h"
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/*---------------------*
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* class declaration *
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*---------------------*/
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/** A class for measurement of time.
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* Timer intervals are represented as floating point values of seconds.
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*/
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class DCMTK_OFSTD_EXPORT OFTimer
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{
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public:
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/** constructor
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*/
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OFTimer();
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/** reset start time
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*/
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void reset();
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/** get elapsed time.
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* i.e. difference between current and start time
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*
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** @return elapsed time in seconds
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*/
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double getDiff() const;
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/** get difference between current time and specified time
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*
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** @param start reference time (in seconds)
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*
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** @return difference between the two times (in seconds)
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*/
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static double getDiff(double start);
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/** get current time
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*
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** @return current time in seconds
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*/
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static double getTime();
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private:
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/// reference/start time
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double Start;
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};
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/** output the current time difference to the given stream.
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* The output format is "<numeric value> <SI unit>" where "SI unit" is:
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* - "ms" for milliseconds if the time difference is less than 1 second
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* - "s" for seconds if the time difference is less than 60 seconds
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* - "min" for minutes if the time difference is less than 3600 seconds
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* - "h" for hours otherwise (i.e. the difference is 3600 seconds or more)
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* @param stream output stream
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* @param timer OFTimer object to print
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* @return reference to the output stream
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*/
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DCMTK_OFSTD_EXPORT STD_NAMESPACE ostream &operator<<(STD_NAMESPACE ostream &stream, const OFTimer &timer);
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#endif
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