Thanks for the help. I read the URL you gave me and I couldn't find where it explicitly said not to use gdk.threads_enter() and gdk.threads_leave() when gtk main loop was running. However, I think this is a good idea. The best overall solution seems to be to put all GTK+ commands in main/parent thread and never in child threads. Then I can forget about gdk.threads_enter() and gdk.threads_leave() because no other thread will ever clash with the GUI work (1 thread has GTK+ stuff only.). Thanks again. Chris On Thu, Jul 31, 2003 at 05:34:05PM -0700, Bharat Bhushan wrote: > We cannnot use gdk.threads_enter() and gdk.threads_leave() blindly. You > need to understand why / when these functions are used, otherwise the > program will freeze. For example, you cannot use these functions when > gtk main loop is running (like it does when we call gtk_dialog_run(), > for example). There is decent documentation abt it at: > > http://developer.gnome.org/doc/API/2.0/gdk/gdk-Threads.html > > good luck, > Bharat > -------------------------------------------------------------------------------- > > > On Thu, 31 Jul 2003 seberino@spawar.navy.mil wrote: > > > We have a Python GTK+ program that uses threads. > > If we DON'T run the GTK+ GUI > > code then multitasking is fine and every thread gets a little CPU time. > > > > If we run a GTK+ GUI in the main parent process/thread then program > > freezes. > > > > The PyGTK commands called gtk.threads.thread_enter() and > > gtk.gdk.threads_leave() are used to avoid conflicts caused by > > two threads writing to GUI at the same time. The disallow/allow > > other threads to write to GUI as needed. > > > > It would seem that the problem are with these two commands but > > we cannot seem to find the problem. As you know, threads > > are not the easiest things to debug. > > > > We are wondering if Python threads are unstable. > > Are they?? > > > > Any ideas at all how to begin to solve this? > > > > Chris > > > > -- > > _______________________________________ > > > > Christian Seberino, Ph.D. > > SPAWAR Systems Center San Diego > > Code 2872 > > 49258 Mills Street, Room 158 > > San Diego, CA 92152-5385 > > U.S.A. > > > > Phone: (619) 553-9973 > > Fax : (619) 553-6521 > > Email: seberino@spawar.navy.mil > > _______________________________________ > > _______________________________________________ > > > > gtk-list@gnome.org > > http://mail.gnome.org/mailman/listinfo/gtk-list > > -- _______________________________________ Christian Seberino, Ph.D. SPAWAR Systems Center San Diego Code 2872 49258 Mills Street, Room 158 San Diego, CA 92152-5385 U.S.A. Phone: (619) 553-9973 Fax : (619) 553-6521 Email: seberino@spawar.navy.mil _______________________________________
