Function GetTimeInMillis

rtpose_wrapper/src/gtest/gtest-all.cpp:2068–2117

Returns the current time in milliseconds.

// Returns the current time in milliseconds.
TimeInMillis GetTimeInMillis() {
#if GTEST_OS_WINDOWS_MOBILE || defined(__BORLANDC__)
  // Difference between 1970-01-01 and 1601-01-01 in milliseconds.
  // http://analogous.blogspot.com/2005/04/epoch.html
  const TimeInMillis kJavaEpochToWinFileTimeDelta =
    static_cast<TimeInMillis>(116444736UL) * 100000UL;
  const DWORD kTenthMicrosInMilliSecond = 10000;

  SYSTEMTIME now_systime;
  FILETIME now_filetime;
  ULARGE_INTEGER now_int64;
  // TODO(kenton@google.com): Shouldn't this just use
  //   GetSystemTimeAsFileTime()?
  GetSystemTime(&now_systime);
  if (SystemTimeToFileTime(&now_systime, &now_filetime)) {
    now_int64.LowPart = now_filetime.dwLowDateTime;
    now_int64.HighPart = now_filetime.dwHighDateTime;
    now_int64.QuadPart = (now_int64.QuadPart / kTenthMicrosInMilliSecond) -
      kJavaEpochToWinFileTimeDelta;
    return now_int64.QuadPart;
  }
  return 0;
#elif GTEST_OS_WINDOWS && !GTEST_HAS_GETTIMEOFDAY_
  __timeb64 now;

# ifdef _MSC_VER

  // MSVC 8 deprecates _ftime64(), so we want to suppress warning 4996
  // (deprecated function) there.
  // TODO(kenton@google.com): Use GetTickCount()?  Or use
  //   SystemTimeToFileTime()
#  pragma warning(push)          // Saves the current warning state.
#  pragma warning(disable:4996)  // Temporarily disables warning 4996.
  _ftime64(&now);
#  pragma warning(pop)           // Restores the warning state.
# else

  _ftime64(&now);

# endif  // _MSC_VER

  return static_cast<TimeInMillis>(now.time) * 1000 + now.millitm;
#elif GTEST_HAS_GETTIMEOFDAY_
  struct timeval now;
  gettimeofday(&now, NULL);
  return static_cast<TimeInMillis>(now.tv_sec) * 1000 + now.tv_usec / 1000;
#else
# error "Don't know how to get the current time on your system."
#endif
}

// Utilities