[fpc-devel] About GetTickCount

[Hans-Peter Diettrich]

Sven Barth schrieb:

> It's basically a 64-bit type now. Here's ReactOS' implementation of 
> GetTickCount64 (which is called by GetTickCount):
[...]
> You notice the loop regarding SharedUserData again? ;) (though this time 
> it also contains a call to "YieldProcessor" and a comment regarding the 
> loop)

Thanks, this makes it more clear: the implementation avoids a critical 
section or other more expensive synchronization.

Nonetheless this implementation gives no clue on the MS Windows 
implementation, including variations (32/64 bit, WinCE...). We only can 
assume that GetTickCount is fast, and thus may be the base for other 
get-time functions.

DoDi