[ck] Re: Threading issues? [ck-request@vds.kolivas.org: ck Digest, Vol 3, Issue 16]

Andreas Mohr andi at rhlx01.fht-esslingen.de
Sun Aug 29 15:35:19 CDT 2004


On Sun, Aug 29, 2004 at 10:07:18PM +1000, Con Kolivas wrote:
> Audio runs as a separate thread outside of wine potentially through who 
> knows how many layers as a combination of both process and kernel 
> context so that's already complicating the issue by having a separate 
> thread. X does the same again. So what the win32 game is doing under 
> wine when it asks for audio or graphics to be done will be handled 
> completely differently to windows. How blocking is done between the 
> graphics and audio calls, when you have a highly cpu bound task (the 
> game) as well is definitely complex and not just the kernel that is 
> responsible here. Add to that the fact that wine itself runs a few 
> threads and as I said before, it's a miracle it runs smoothly at all.
This shows that dynamic reloading of different schedulers
is a very useful thing: if playing some game on Wine doesn't work with the
currently used scheduler, you just load a specially adapted scheduler (say a
"Wine" scheduler for close Windows scheduling compatibility ;) in order to
have some great gaming session, and that's it.
(of course it'd be useful to have a universally usable scheduler instead,
but that is very difficult if not impossible to achieve)

Andreas Mohr

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