我们的时间函数。

hanma

//
static LARGE_INTEGER g_PerformanceFrequency;
static LARGE_INTEGER g_MSPerformanceFrequency;
static LARGE_INTEGER g_ClockStart;

static void InitTime()
{
        if( !g_PerformanceFrequency.QuadPart )
        {
                QueryPerformanceFrequency(&g_PerformanceFrequency);
                g_MSPerformanceFrequency.QuadPart = g_PerformanceFrequency.QuadPart / 1000;
                QueryPerformanceCounter(&g_ClockStart);
        }
}

double FloatTime()
{
        InitTime();

        LARGE_INTEGER CurrentTime;

        QueryPerformanceCounter( &CurrentTime );

        return (double)( CurrentTime.QuadPart - g_ClockStart.QuadPart ) / (double)(g_PerformanceFrequency.QuadPart);
}

unsigned long MSTime()
{
        InitTime();

        LARGE_INTEGER CurrentTime;

        QueryPerformanceCounter( &CurrentTime );

        return (unsigned long) ( ( CurrentTime.QuadPart - g_ClockStart.QuadPart ) / g_MSPerformanceFrequency.QuadPart);
}