double t0,t1;                    __int64 Freq = 0;                    __int64 Count = 0;                    if (QueryPerformanceFrequency((LARGE_INTEGER*)&Freq)&& Freq > 0&& QueryPerformanceCounter((LARGE_INTEGER*)&Count)){                        t0=(double)Count / (double)Freq * 1000.0;                    }                    Sleep(1);                    if (QueryPerformanceFrequency((LARGE_INTEGER*)&Freq) && Freq > 0 && QueryPerformanceCounter((LARGE_INTEGER*)&Count)) {                        t1 = (double)Count / (double)Freq * 1000.0;                    } TRACE(_T("Sleep=%.3lf\t"),t1-t0);