At Tue, 19 Aug 2008 17:24:06 -0500, Brian Rhodes wrote: > > When calling snd_pcm_write* from a thread how do you safely cancel the > thread? I've tried masking the signals which are used in alsa lib, yet > I am getting a segfault on pthread_exit(). My thread is looping doing > the following. > > testcancel > snd_pcm_wait > snd_pcm_avail > snd_pcm_writei > > I am checking return values to handle those functions being woken up by > pthread cancel and attempting to exit. In testing the process it > performs fine until I start actually writing data. Once I write some > data, a pthread_exit will segfault. My cancellation routine is calling > snd_pcm_drop, then doing a cancel followed by join. No, alsa-lib functions don't care threads in general. Some codes have uses pthread_mutex, but not in the PCM core code, at least. You need to handle and protect threads by yourself. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
