+ //\r
+ // Retrieve the frequency of the performance counter in Hz.\r
+ // \r
+ gWinNt->QueryPerformanceFrequency ((LARGE_INTEGER *)&Frequency);\r
+ \r
+ //\r
+ // Convert frequency in Hz to a clock period in femtoseconds.\r
+ //\r
+ mTimerPeriod = DivU64x64Remainder (1000000000000000, Frequency, NULL);\r
+ \r