gtk.events_pending() freezes when I think it is TRUE
- From: Brian <dol-sen telus net>
- To: "gtk-app-devel-list gnome org" <gtk-app-devel-list gnome org>
- Subject: gtk.events_pending() freezes when I think it is TRUE
- Date: Fri, 13 Feb 2004 13:56:43 -0800
I am working on a python app that (currently) is using a dialog box
that retrieves output from a forked application. Most of the display is
fine until there is rapid text deletion and insertion emulating a
terminal screen output where the subprocess is sending a carriage return
without a linefeed, or rapid char insertion/backspace (ascii spinner
using '/-\|' characters) From what I have googled the following routine
is needed (dprint statements are to direct debug prints to a terminal
screen). All seems to be ok until the gtk.events_pending() call I
think should be returning TRUE. But it never returns and all processes
in the app are showing 0% cpu time. This particular crash is only
because the screen did not keep up to text additions and the window
display needed to scroll down and was getting a little behind.
def view_update():
gtk.threads_enter()
dprint('pending check')
p = gtk.events_pending()
dprint('events_pending? '+str(p))
while p:
dprint('an event')
x = gtk.main_iteration()
dprint('did main_iteration')
gtk.threads_leave()
dprint('pending done')
sample of debug print statements from test:
# escape sequences are only printed here for now and are not being used
at the moment
HOME = /home/brian
Process window realizing
begining run of os.read() loop
pending check
events_pending? 0
pending done
escape_seq=[31;01m
pending check
events_pending? 0
pending done
escape_seq=[0m
escape_seq=[31;01m
pending check
events_pending? 0
[snip]
[/snip]
pending check
events_pending? 0
pending done
pending check
events_pending? 0
pending done
pending check
------
end of snipit. Actually that is the point where it froze about 3 hrs
ago, as I haven't killed it yet.
I have right after this crash, switched over to the idle python
interpreter shell and did a quick test:
import gtk
gtk.events_pending()
1
which returned true without freezing.
This problem has persisted thru 2 python versions and a recent gnome
update, although pygtk remains the same.
Anyone have any similatr problems or solutions? Is this a pygtk bug? Or
am I just doing something wrong?
Any and all help greatly appreciated.
some info:
* dev-python/pygtk
Latest version available: 2.0.0
Latest version installed: 2.0.0
Size of downloaded files: 514 kB
Homepage: http://www.daa.com.au/~james/pygtk/
Description: GTK+2 bindings for Python
License: LGPL-2.1
* dev-lang/python
Latest version available: 2.3.3
Latest version installed: 2.3.3
Size of downloaded files: 7,026 kB
Homepage: http://www.python.org
Description: A really great language
License: PSF-2.2
And from our main gtk interface we are having this problem in:
gnome-base/gnome
Meta package for the GNOME desktop.
http://www.gnome.org/
Installed versions:
Slot 2.0: 2.4.2
Available versions:
Slot 1.4: 1.4-r3
Slot 2.0: 2.0.2-r1, 2.2-r2, 2.2.1, 2.2.2-r1, 2.4, 2.4.1, (2.4.1_p1),
2.4.2
--
Brian <dol-sen telus net>
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