From: Laurent Sansonetti <lrz@...>
Date: 2004-03-17T03:06:19+09:00
Subject: Re: [Ruby-gnome2] possible bug in memory management

Hi David,

On Tue, 2004-03-16 at 13:49, David Espada wrote:
>  Hi all.
> 
>  I have found a reproducible bug, but I don't know if it is in Gtk2
>  library, Ruby or Ruby-gtk2.
> 
>  You can execute this little program:
> 
> -------------------------------------------
> #!/usr/bin/ruby
> 
> require 'glib2'
> require 'gtk2'
> 
> def bucle
> 	100000.times do |i|
> 		p i
> 		v = Gtk::Window.new.show_all
> 		v.destroy
> 	end
> end
> 
> Gtk::init
> 
> ventana = Gtk::Window.new
> ventana.set_title("Creating windows")
> ventana.signal_connect('delete_event') {exit}
> 
> 
> vbox = Gtk::VBox::new(true, 10)
> 
> boton = Gtk::Button.new('_loop', true)
> boton.signal_connect('clicked') do bucle end
> vbox.pack_start(boton, true, true, 0)
> 
> ventana.add(vbox)
> 
> ventana.show_all
> 
> Gtk.main
> ------------------------------------------
> 
>  Depending of system memory, program fails before or after. Error
>  consist in program freeze.

If I understand correctly the problem is that you're executing an
operation which takes some time in the main thread, which takes care of
periodically refreshing the UI.  So it's quite normal if the program
freezes.  You should start the signal code in a separate thread.

--
Laurent