[SDL] Why not nanosleep()?
f91-men at nada.kth.se
Tue Apr 4 09:04:09 PDT 2000
>Huh. What's the resolution of the internal Pentium timers? It's gotta be
>better than SDL's current resolution, and if that's really important, we
>could go that route and start doing things that way. I have improved
>resolution timer code for both x86 Pentium machines and Mac PPCs, if anybody
The gettimeofday() syscall in Linux (and doubtless other OSes) uses the cycle
counter where available (which is in most modern processors). But having
a high-resolution clock is not the same thing as a high-res timer that
can wakeup and reschedule processes at higher rates. Some effort has been
made, anyway; see http://www.ittc.ukans.edu/utime/ .
It could be useful for giving some cycles to other threads or cooperating
processes though. Has anyone found themselves in a need for this?
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