Re: using threads with GTK+

[Paul Pogonyshev <pogonyshev gmx net>]

Russell Shaw wrote:
> Paul Pogonyshev wrote:
> > Hi.
> >
> > I'm going to use the following threads with GTK+:
> >   - thread 1 does all GUI job (widgets etc.) and launches more threads
> >     when needed;
> >   - threads 2, ... (launched by 1) do some time consuming computations
> >     and inform thread 1 once they are done so it can present the results
> >     to user.
> >
> > The only thing i'm not sure how to implement is how to let thread 1 know
> > when one of working threads is finished.  Current best way i found while
> > studying GTK+ and Glib manuals is like this:
> >
> > Thread 1 uses a new event source in its the main loop which pops events
> > from a GAsyncQueue.  Once a working thread finishes it jobs, it pushes a
> > structure onto the queue, calls g_main_context_wakeup() to wake thread 1
> > up if needed, and terminates.
> >
> > This does not seem to be very hard to implement, but before starting on
> > it, i would like to be sure i didn't miss some more simple way of
> > implementing the schema above.
>
> Thread 1 can simply retrieve events from a g_async_queue with
> g_async_queue_pop() or g_async_queue_timed_pop(). The finishing
> threads just push an apropriate message onto the queue with
> g_async_queue_push().

This is exactly what i said.  And i have implemented that already, with
Tristan's blessing (thanks, Tristan :).  Everything works just fine.

Paul