Re: winmm: Use a pipe for timer

[Steven Edwards]

Hi,

On 5/5/07, Maarten Lankhorst  wrote:
> This avoids expensive server calls in a time critical timer.
>
> Without priority patch it drops stddev in winmm timer tests to < 2 ms as
> compared to ~7 ms before. With priority patch it drops to < .20 ms.
>
> Backwards compatibility code is kept just in case.

Even though backward compatibility is kept I worry about a couple of
things. A lot of work was done on WinMM to make it portable to windows
for testing and I don't like seeing new code to tie it back to unix
even with the old code left in place. Also shouldn't there be a way to
speed up the server performance instead? If this is accepted here then
what about other areas of wine such as directx where timers similar
may be used? Should we make this sort of patch global? I don't think
so but then I don't know enough to no what the proper fix would be.

Thanks

winmm: Use a pipe for timer

[Maarten Lankhorst]

Steven Edwards schreef:
> Hi,
>
> Even though backward compatibility is kept I worry about a couple of
> things. A lot of work was done on WinMM to make it portable to windows
> for testing and I don't like seeing new code to tie it back to unix
> even with the old code left in place. Also shouldn't there be a way to
> speed up the server performance instead? If this is accepted here then
> what about other areas of wine such as directx where timers similar
> may be used? Should we make this sort of patch global? I don't think
> so but then I don't know enough to no what the proper fix would be.
>
> Thanks

Winmm has a generic timer interface that you could probably use in d3d
as well. If windows doesn't have pipe.h and sys/pipe.h then we could
change it so that this implementation is only used if sys/pipe.h or
pipe.h is found. That should keep winmm portable while keeping speed on
both platforms. As for making this patch global: I don't know.

Maarten

winmm: Use a pipe for timer

[Amy Fox]

i dnt understand wot ur on abwt m8 im only 15 and plus im blonde so i hav no 
idea?????
> From: "Steven Edwards" 
> Reply-To: [e-mail]
> To: [e-mail]
> CC: [e-mail]
> Subject: Re: winmm: Use a pipe for timer
> Date: Sat, 5 May 2007 16:59:26 -0400
>
> Hi,
>
> On 5/5/07, Maarten Lankhorst  wrote:
> > This avoids expensive server calls in a time critical timer.
> >
> > Without priority patch it drops stddev in winmm timer tests to < 2 ms as
> > compared to ~7 ms before. With priority patch it drops to < .20 ms.
> >
> > Backwards compatibility code is kept just in case.
>
> Even though backward compatibility is kept I worry about a couple of
> things. A lot of work was done on WinMM to make it portable to windows
> for testing and I don't like seeing new code to tie it back to unix
> even with the old code left in place. Also shouldn't there be a way to
> speed up the server performance instead? If this is accepted here then
> what about other areas of wine such as directx where timers similar
> may be used? Should we make this sort of patch global? I don't think
> so but then I don't know enough to no what the proper fix would be.
>
> Thanks
>
> --
> Steven Edwards
>
> "There is one thing stronger than all the armies in the world, and
> that is an idea whose time has come." - Victor Hugo

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