////////////////////////////////////////////////////////////////////////////////
// test01.c - HRT and RDTSC tests for Windows OS.
//
// Note:	Hrt - High Resolution Timer
//			Pcv - Performance Counter Value
//			Cc  - Clock Cycles
//			Ns  - Nano Seconds

#include <stdio.h>
#include <windows.h>

int main( void )
{
	BOOL bOK = FALSE;
	DWORD dwLastError = 0;

	double dHrtFrequency = 0.0L;
	LARGE_INTEGER liHrtFrequency = { 0, 0 };
	LARGE_INTEGER liCc1 = { 0, 0 };
	LARGE_INTEGER liCc2 = { 0, 0 };

	unsigned __int64 uiCc1 = 0;
	unsigned __int64 uiCc2 = 0;

	double dValue1;
	double dValue2;

	size_t i;

	bOK = QueryPerformanceFrequency(  &liHrtFrequency );
	if( bOK == FALSE )
		return ( int )0;
	dwLastError = GetLastError();

	// Sub-Test1
	{
		printf( "QueryPerformanceFrequency - Ticks Per Second: %ld Last Error: %d\n",
				liHrtFrequency.QuadPart, dwLastError );
		dHrtFrequency = ( double )liHrtFrequency.QuadPart;
		printf( "QueryPerformanceFrequency - Ticks Per Second: %.0f Last Error: %d\n",
					dHrtFrequency, dwLastError );
		printf( "\n" );
	}

	// Sub-Test2
	{
		printf( "QueryPerformanceCounter ( Pcv )  Rdtsc ( Cc )\n" );

		for( i = 0; i < 300; i += 1 )
		{
			uiCc1 = __rdtsc();
			QueryPerformanceCounter( &liCc1 );
			Sleep( 1000 );
			uiCc2 = __rdtsc();
			QueryPerformanceCounter( &liCc2 );

			dValue1 = ( double )( liCc2.QuadPart - liCc1.QuadPart ) * 1000.0L;
			dValue2 = ( double )( uiCc2 - uiCc1 );

			printf( "%.0f                       %.0f\n",
						dValue1,
						dValue2 );
		}
	}

	return ( int )1;
}