33 lines
874 B
C
33 lines
874 B
C
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#include <Windows.h>
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#include <stdio.h>
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double getCPUTime(void)
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{ /* Windows */
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FILETIME createTime, exitTime, kernelTime, userTime;
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if(GetProcessTimes(GetCurrentProcess(),
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&createTime, &exitTime, &kernelTime,
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&userTime) != -1 )
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{
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SYSTEMTIME userSystemTime;
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if(FileTimeToSystemTime(&userTime,
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&userSystemTime)!= -1 )
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return (double)userSystemTime.wHour * 3600.0 +
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(double)userSystemTime.wMinute * 60.0 +
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(double)userSystemTime.wSecond +
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(double)userSystemTime.wMilliseconds
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/ 1000.0;
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}
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return -1; /* Failed. */
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}
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int main(int argc, char **argv)
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{
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double startTime, endTime;
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startTime = getCPUTime( );
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for(int i=0;i<600000000;i++)
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{}
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endTime = getCPUTime( );
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printf( "CPU time used = %lf\n",
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(endTime-startTime) );
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return 0;
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}
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