[alsa-devel] Third time: Unlink PCM resource ?
tiwai at suse.de
Mon May 25 20:38:50 CEST 2009
At Mon, 25 May 2009 20:31:42 +0200 (CEST),
Jaroslav Kysela wrote:
> On Mon, 25 May 2009, Werner Van Belle wrote:
> > Takashi Iwai wrote:
> >> You can control it via fcntl(). See fcntl(2) man page.
> > I looked at that but I didn't find any place in alsalib (or libalsa
> > whatever the order of those two words), where I can obtain the file
> > handle. They are all of type pcm_something_t. I found a file handle
> > quite deep in this library but there seems no way to actually obtain
> > that handle.
> > Do you think fcntl on a pcm_t device would work (if we got it to compile
> > first :-)
> snd_pcm_poll_descriptors / snd_pcm_poll_descriptors_count
... which doesn't return always all used fd's.
> But I wonder why snd_pcm_close() does not work in child process. Could you
> show us 'strace -f -e trace=open,close' for your program?
Passing O_CLOEXEC would be the best solution, I think.
We just need a few additions.
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