QueryPerformanceCounter/QueryPerformanceFrequency

INT64 EscapeTime()
{
    LARGE_INTEGER nFreq;

    LARGE_INTEGER nBeginTime;

    LARGE_INTEGER nEndTime;

    QueryPerformanceFrequency(&nFreq);

    QueryPerformanceCounter(&nBeginTime);


    Sleep(1000);

    QueryPerformanceCounter(&nEndTime);

    INT64 time = (double)(nEndTime.QuadPart - nBeginTime.QuadPart) / (double)nFreq.QuadPart;



    printf("%f\n", time);

    return time;
}