[pygtk] Threads sync

[Frédéric]

Hi,

I have some troubles with threads in my Papywizard app.

During the shooting process, I launch a thread which iterates over all 
shooting positions, and control the hardware to move the panoramic head, 
and trigger the camera.

Right after this thread is launch, I periodically execute a function from 
the GTK lop, using gobject.timeout_add(). In this function, I read some 
variables of the external thread to refresh the GUI. The user can also 
interact with the GUI during the shooting process, to pause/stop it.

All works fine on my PC (running linux), but I experience several problems 
on maemo. For example, some part of the GUI are not correctly refreshed 
the first time I launch the shooting process. If I stop it, and retry, all 
works fine. Another issue is that I can send user action at wrong moments. 
I think this a related to the lower speed execution of the application, 
showing me some wrong-codeed things in my app.

So I need to add some robust inter-threads sync mecanisms, to ensure I 
can't trigger actions at the wrong place. I tried to use the Event object 
from the standard threading module, but it does not work under maemo 
(while it works fine on the PC) :o(

So, what other mecanism should I use to sync my threads? Is there a 
GTK-based macanism?

Thanks,

-- 
    Frédéric

    http://www.gbiloba.org