[Bug 503899] Re: Audio shutdown failure (hits watchdog)

[Paul Sladen]

<mezcalero> my guess is that one thread calls snd_pcm_close() while another one is still hanging in snd_pcm_writei()
<mezcalero> is that possible?
<mezcalero> ALSA is not thread safe
<mezcalero> you should not call alsa functions on the same object from two threads at the same time
<mezcalero> if you do things will go boom

is possibly a pointer that multiple thread aren't helping;  eg. if
allocation was doing in one thread, that same thread should probably
also perform shutdown and cleanup.  Whether that should be the
application of the library doing that locking remains to be seen...

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Audio shutdown failure (hits watchdog)
https://bugs.launchpad.net/bugs/503899
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