Universal Time test functions under Windows and Linux platforms

Time.cpp

////////////////////////////////////////////////////////////////////////////////Timer.cpp//=========//High Resolution Timer.//This timer was able to measure the elapsed time with 1 micro-second accuracy//In both Windows, Linux and Unix system////Author:song Ho Ahn ([email protected])//Created:2003-01-13//Updated:2006-01-13////Copyright (c) 2003 Song Ho Ahn//////////////////////////////////////////////////////////////////////////////#include"Timer.h"#include <stdlib.h>/////////////////////////////////////////////////////////////////////////////////Constructor///////////////////////////////////////////////////////////////////////////////Timer::timer () {#ifdef WIN32 queryperformancefrequency (&frequency); Startcount.quadpart =0; Endcount.quadpart =0;#elseStartcount.tv_sec = Startcount.tv_usec =0; Endcount.tv_sec = Endcount.tv_usec =0;#endifstopped =0; Starttimeinmicrosec =0; Endtimeinmicrosec =0;}/////////////////////////////////////////////////////////////////////////////////Distructor///////////////////////////////////////////////////////////////////////////////timer::~Timer () {}/////////////////////////////////////////////////////////////////////////////////Start timer.//Startcount'll is set at the this point.///////////////////////////////////////////////////////////////////////////////voidTimer::start () {stopped =0;//Reset Stop Flag#ifdef WIN32 QueryPerformanceCounter (&Startcount);#elseGettimeofday (&Startcount, NULL);#endif}/////////////////////////////////////////////////////////////////////////////////Stop the timer.//Endcount'll is set at the this point.///////////////////////////////////////////////////////////////////////////////voidTimer::stop () {stopped =1;//Set timer stopped flag#ifdef WIN32 QueryPerformanceCounter (&Endcount);#elseGettimeofday (&Endcount, NULL);#endif}/////////////////////////////////////////////////////////////////////////////////COMPUTE elapsed time in micro-second resolution.//Other GetElapsedTime would call the this first and then convert to correspond resolution.///////////////////////////////////////////////////////////////////////////////DoubleTimer::getelapsedtimeinmicrosec () {#ifdef WIN32if (!Stopped) QueryPerformanceCounter (&Endcount); Starttimeinmicrosec = Startcount.quadpart * (1000000.0/Frequency. QuadPart); Endtimeinmicrosec = Endcount.quadpart * (1000000.0/Frequency. QuadPart);#elseif (!Stopped) Gettimeofday (&Endcount, NULL); Starttimeinmicrosec = (STARTCOUNT.TV_SEC *1000000.0) +Startcount.tv_usec; Endtimeinmicrosec = (ENDCOUNT.TV_SEC *1000000.0) +Endcount.tv_usec;#endifReturn Endtimeinmicrosec-Starttimeinmicrosec;}/////////////////////////////////////////////////////////////////////////////////Divide elapsedtimeinmicrosec by 1000///////////////////////////////////////////////////////////////////////////////DoubleTimer::getelapsedtimeinmillisec () {ReturnThis->getelapsedtimeinmicrosec () *0.001;}/////////////////////////////////////////////////////////////////////////////////Divide elapsedtimeinmicrosec by 1000000///////////////////////////////////////////////////////////////////////////////double Timer::getelapsedtimeinsec () {return this->getelapsedtimeinmicrosec () * ///////////////////////////////////////////////////////////////////////////////// same as getelapsedtimeinsec () ///////////////////////////////////////////////////////////////////////////////< Span style= "color: #0000ff;" >double Timer::getelapsedtime () {return this->getelapsedtimeinsec ();}         

////////////////////////////////////////////////////////////////////////////////Timer.h//=======//High Resolution Timer.//This timer was able to measure the elapsed time with 1 micro-second accuracy//In both Windows, Linux and Unix system////Author:song Ho Ahn ([email protected])//Created:2003-01-13//Updated:2006-01-13////Copyright (c) 2003 Song Ho Ahn//////////////////////////////////////////////////////////////////////////////#ifndef Timer_h_def#define Timer_h_def#ifdef WIN32//Windows system Specific#include <windows.h>#else//Unix based System specific#include <sys/time.h>#endifClasstimer{Public: Timer ();//Default constructor ~timer ();//Default destructorvoid Start ();//Start timervoid Stop ();//Stop the timerDouble GetElapsedTime ();//Get elapsed time in secondDouble Getelapsedtimeinsec ();//Get elapsed time in second (same as GetElapsedTime)Double Getelapsedtimeinmillisec ();//Get elapsed time in Milli-secondDouble Getelapsedtimeinmicrosec ();//Get elapsed time in Micro-secondProtected:Private:Double starttimeinmicrosec;//Starting time in Micro-secondDouble endtimeinmicrosec;// Ending time in micro-second int stopped; // Stop flag #ifdef WIN32 large_integer frequency; // ticks per second large_integer Startcount; //Large_integer endcount; //#else timeval startcount; //Timeval endcount; //#endif};  #endif // timer_h_def              

Call Mode:

#include"Timer.h"Timer timer; //TimerDoubleElapsedTime;//Time in millisecondDoubleAvgtime =0;DoubleTestnum =0;voidTimebegin () {Timer.start ();}voidTimeend (stringstr) {ElapsedTime=timer.getelapsedtimeinmillisec (); Avgtime+=ElapsedTime; STR= str +"Time is :";//%lf ms\n ";cout << str << elapsedtime <<"Ms"<<Endl;}

Universal Time test functions under Windows and Linux platforms