On Wed, 15 Oct 2003, Takashi Iwai wrote:
> At Wed, 15 Oct 2003 10:53:51 -0400,
> Paul Davis wrote:
> >
> > >it's not related with threads, but it invokes a fork for a server
> > >process (a main control only, doesn't do mixing stuffs).
> > >it looks like there is something wrong with this together with xmms.
> > >i've seen that Xlib got a spurious async.
> > >magically enough, the attached patch seems to fix.
> >
> > >From http://www.gtk.org/faq/#AEN477
> >
> > ----------------------------------------------------------------------
> > 5.5. Why does this strange 'x io error' occur when I fork() in my GTK+ app?
> > Why does this strange 'x io error' occur when I fork() in my GTK+ app?
> >
> > This is not really a GTK+ problem, and the problem is not related to
> > fork() either. If the 'x io error' occurs then you probably use the
> > exit() function in order to exit from the child process.
> >
> > When GDK opens an X display, it creates a socket file descriptor. When
> > you use the exit() function, you implicitly close all the open file
> > descriptors, and the underlying X library really doesn't like this.
> >
> > The right function to use here is _exit().
>
> oh yeah, that's it. replacing two exit() calls in pcm_direct.c with
> _exit() fixes the problem indeed.
> thanks for the info!
I think that only one replacement makes sense - in
snd_pcm_direct_server_create(). Fixed in CVS now.
BTW: An user already reported that _exit() should be used, but he didn't
explain the reason, so I posponed the change to see, if it's really
necessary.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
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