Re: Exiting from snd_pcm_wait or snd_pcm_write.

[Takashi Iwai <tiwai@suse.de>]

At Sun, 06 Apr 2003 21:25:06 +0100,
James Courtier-Dutton wrote:
> 
> Hi all,
> 
> If I have an application running 2 or more threads.
> Thread 1 is currently calling snd_pcm_wait() waiting for enough 
> availiable space to appear in the sound buffer.
> Thread 2 wants to stop thread 1 doing that( abort the snd_pcm_wait() 
> call), and then wants thread 1 to restart with new data.
> 
> Can Thread 2 just call snd_pcm_drop() while thread 1 is calling 
> snd_pcm_wait() ?

it should be ok.  the thread 1 will be woken up after the pcm is
stopped, but POLLOUT won't be set in this case.

> What about Thread 2 calling snd_pcm_reset() while thread 1 is calling 
> snd_pcm_wait()?

this may not work (although i'm not 100% sure).
the thread 1 might lose sync.


ciao,

Takashi


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