ElapsedMilliseconds for C/C++

[Mistrel]

From what I understand, time() is implementation-specific. So I wrote a replacement using Win32. if anyone has a way of doing this in a standardized way that is more portable, I'm all ears.

I programmed this for C++. I'm assuming that it should work fine in C as well.

Code: Select all

INT64 elapsedMilliseconds() {
   SYSTEMTIME sysTime;
   FILETIME elapsed;
   INT64 posix;
   
   GetSystemTime(&sysTime);
   SystemTimeToFileTime(&sysTime, &elapsed);
   
   // FILETIME to POSIX
   posix = *(INT64*)&elapsed;
   
   posix = (posix - 116444736000000000) / 10000;
   
   return posix;
}

[freak]

I moved this to OffTopic. The Tips section is for PureBasic codes.

[Joakim Christiansen]

Helping Kwaï chang caïne or something?

[idle]

was there some problem with using GetTickCount_() ?

[Nituvious]

was there some problem with using GetTickCount_() ?

He may have wanted a cross platform function.

[DarkDragon]

was there some problem with using GetTickCount_() ?

He may have wanted a cross platform function.

Euh.. but GetSystemTime and SystemTimeToFileTime are more WinAPI functions than one GetTickCount or timeGetTime.

[idle]

I was just wondering if there was a difference with GetTickCount_() on 64 bit systems

[Mistrel]

GetTickCount_() has a 49 day resolution.

[Rescator]

I was just wondering if there was a difference with GetTickCount_() on 64 bit systems

Nope, which is why you should use GetTickCount64 it's only Windows 6.x or later but it gives you like hundreds of years before it wraps?