reactos/ntoskrnl/tests/TestTimer.c
Cameron Gutman c2d0d784c7 [USB-BRINGUP-TRUNK]
- Create a branch to do a proper merge of USB work from a trunk base instead of from cmake-bringup
- In the future, DO NOT under any circumstances branch another branch. This leads to merge problems!

svn path=/branches/usb-bringup-trunk/; revision=55018
2012-01-20 20:58:46 +00:00

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C

#include <stdio.h>
#include <conio.h>
#include <windows.h>
void main ( int argc, char** argv, char** environ )
{
LARGE_INTEGER liFrequency;
LARGE_INTEGER liStartTime;
LARGE_INTEGER liCurrentTime;
QueryPerformanceFrequency ( &liFrequency );
printf ( "HIGH RESOLUTION PERFOMANCE COUNTER Frequency = %I64d CLOCKS IN SECOND\n",
liFrequency.QuadPart );
if (liFrequency.QuadPart == 0)
{
printf("Your computer does not support High Resolution Performance counter\n");
return;
}
printf ( "Press <ENTER> to start test...\n" );
getchar();
printf ( "\nPress any key to quit test\n\n" );
QueryPerformanceCounter ( &liStartTime );
for (;;)
{
QueryPerformanceCounter ( &liCurrentTime );
printf("Elapsed Time : %8.6f mSec\r",
((double)( (liCurrentTime.QuadPart - liStartTime.QuadPart)* (double)1000.0/(double)liFrequency.QuadPart )) );
if (_kbhit())
break;
}
}