[LAD] Jack1 and Fl::lock

[Mark D. McCurry]

On 04-14, Aurélien Leblond wrote:
> I have been debugging an issue in Giada where sometimes it would get
> disconnected from Jack1 at start (not Jack2).
> 
> During my debugging, I found that the JackSyncCallback method setup in
> Giada's jack_set_sync_callback uses Fl::lock which blocks the main
> process and Jack doesn't like that.
> I believe that's what the problem is (especially as after removing
> them I cannot reproduce it anymore)...
> 
> Does anyone who knows Jack much better than I do (in fact I'm a real
> noob in that area) think I'm right in my investigation's finding?

From http://jackaudio.org/api/group__TransportControl.html
"This realtime function must not wait."
So, this blocking behavior should not exist and can cause all sorts of
issues.


After running stoat on giada there are a few issues in both the process
callback and the sync callback.
These issues are now documented on giada's github issue tracker:
https://github.com/monocasual/giada/issues/49

--Mark
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 473 bytes
Desc: not available
URL: <http://lists.linuxaudio.org/pipermail/linux-audio-dev/attachments/20150414/c38cac1d/attachment.pgp>