Function getSeconds

third-party/embreeSrc/common/sys/sysinfo.cpp:506–512

  }

  double getSeconds() 
  {
    LARGE_INTEGER freq, val;
    QueryPerformanceFrequency(&freq);
    QueryPerformanceCounter(&val);
    return (double)val.QuadPart / (double)freq.QuadPart;
  }

  void sleepSeconds(double t) {
    Sleep(DWORD(1000.0*t));