Re: [gtk-osx-users] CoreAnimation: warning, deleted thread with uncommitted CATransaction.

[Pascal <p p14 orange fr>]

Thanks John for your quick answer.

Well I was not aware of that rule!
I'm programming with GTKAda so I don't know if it is possible and how to "use idle events for 
synchronization".

Do you know some examples?

Anyway, I will see on GTKAda list.

Thanks, Pascal.
http://blady.pagesperso-orange.fr


> Le 26 déc. 2015 à 19:34, John Ralls <jralls ceridwen us> a écrit :
>
>
> > On Dec 26, 2015, at 8:53 AM, Pascal <p p14 orange fr> wrote:
> >
> > Hello.
> >
> > I've got issues with the following warning:
> >
> > CoreAnimation: warning, deleted thread with uncommitted CATransaction; set CA_DEBUG_TRANSACTIONS=1 in 
> > environment to log backtraces.
<...>
> > My program is multi-threaded with no problem since I upgraded to MacOS 10.11 and XCode 7.
> >
> > In fact it's more than a simple warning because the thread is deleted.
> >
> > There are some clues on:
> > http://stackoverflow.com/questions/12507193/coreanimation-warning-deleted-thread-with-uncommitted-catransaction
> >
> > Is it a GTK-OSX concern? How to solve it?
> >
> > Season greetings, Pascal.
> > http://blady.pagesperso-orange.fr
>
> The SO article you cite indicates that this is a thread lifetime issue. One of the requirements of using 
> Gtk or Quartz in a multi-threaded environment is that all GUI operations take place in the main thread and 
> that other threads use idle events for synchronization. If you can create a simple demonstration program 
> that raises the warning within that constraint then by all means file a bug against gtk+, quartz backend. 
> Otherwise the problem is likely that your code violates the single-GUI-thread constraint.
>
> Regards,
> John Ralls