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.
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