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57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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// Timer.h
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// =======
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// High Resolution Timer.
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// This timer is able to measure the elapsed time with 1 micro-second accuracy
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// in both Windows, Linux and Unix system
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//
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// AUTHOR: Song Ho Ahn (song.ahn@gmail.com)
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// CREATED: 2003-01-13
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// UPDATED: 2017-03-30
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//
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// Copyright (c) 2003 Song Ho Ahn
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//////////////////////////////////////////////////////////////////////////////
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#ifndef TIMER_H_DEF
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#define TIMER_H_DEF
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#if defined(WIN32) || defined(_WIN32) // Windows system specific
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#include <windows.h>
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#else // Unix based system specific
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#include <sys/time.h>
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#endif
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class Timer
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{
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public:
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Timer(); // default constructor
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~Timer(); // default destructor
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void start(); // start timer
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void stop(); // stop the timer
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double getElapsedTime(); // get elapsed time in second
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double getElapsedTimeInSec(); // get elapsed time in second (same as getElapsedTime)
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double getElapsedTimeInMilliSec(); // get elapsed time in milli-second
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double getElapsedTimeInMicroSec(); // get elapsed time in micro-second
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protected:
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private:
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double startTimeInMicroSec; // starting time in micro-second
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double endTimeInMicroSec; // ending time in micro-second
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int stopped; // stop flag
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#if defined(WIN32) || defined(_WIN32)
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LARGE_INTEGER frequency; // ticks per second
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LARGE_INTEGER startCount; //
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LARGE_INTEGER endCount; //
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#else
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timeval startCount; //
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timeval endCount; //
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#endif
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};
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#endif // TIMER_H_DEF
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