Re: Multi-threaded UI Freezes on GDK Call

["Michael R. Head" <burner suppressingfire org>]

I'll break protocol and reply to my own message _again_...

On Tue, 2007-12-18 at 19:05 -0500, Michael R. Head wrote:
> On Tue, 2007-12-18 at 18:46 -0500, Michael McCann wrote:
> > Ahh, ok. How else can I accomplish my goal, then? I need to give GTK the 
> > lock, as I'm calling GDK from another function not in the main GTK loop. 
> > I tried leaving out gdk_threads_enter()/leave() in the CPU-intensive 
> > function, but X gives me errors.
>
> Well, I guess what you need to do is to separate out the CPU intensive
> bits of the function from the widget manipulation bits...
>
> my_function() {
> compute_real_hard();
>
> gdk_threads_enter();
> update_ui();
> gdk_threads_leave();
>
> }
>
> Or something like that.

Also, you can skip using gdk_threads_enter() and gdk_threads_leave() if
you instead use g_idle_add(update_ui) and make update_ui a suitable
callback:

http://library.gnome.org/devel/glib/stable/glib-The-Main-Event-Loop.html#g-idle-add

mike

> mike
-- 
Michael R. Head <burner suppressingfire org>
suppressingfire.org