Hi Clemens, I missed replying to say thanks for the quick response - appreciated. On Monday 22 August 2016 18:37, you wrote: > Alan Horstmann wrote: > > I am wondering if there is a policy on the thread 'cancelability' / > > 'cancellability' of the functions in Alsa-lib? > > Yes. The policy is "don't even think about it". Too late - it's been happening for years! > > The callback runs in it's own thread; when a user requests 'AbortStream' > > a thread cancel is requested. > > Alsa-lib is not the only library with this 'policy'. You cannot cancel > threads over whose code you do not have complete control. I was unsure whether libraries might disable cancelablility themselves as a defensive measure so as to protect the internal states - in this case to prevent the audio system from getting 'screwed-up', if only for other users. We will have to ensure there is only limited opportunity for cancelling the thread during well-chosen sections. Initial patches to do just that are proving effective. Thanks again, Alan _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
