Referencer hangs on Ubuntu 13.10: gtk thread related changes?

[Mads Chr. Olesen]

Pretty much any interaction involving dialogs, even opening the about dialog will cause Referencer to hang.
The backtrace looks something like:
#0 __lll_lock_wait ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1 0x00007ffff4144192 in _L_lock_1142 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#2 0x00007ffff4144110 in __GI___pthread_mutex_lock (mutex=0x7773a0)
    at pthread_mutex_lock.c:104
#3 0x00007ffff54d13a1 in g_mutex_lock (mutex=<optimized out>)
    at /build/buildd/glib2.0-2.38.1/./glib/gthread-posix.c:213
#4 0x00007ffff649dcba in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#5 0x00007ffff54913b6 in g_main_dispatch (context=0x7b0b40)
    at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3065
#6 g_main_context_dispatch (context=context@entry=0x7b0b40)
    at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3641
#7 0x00007ffff5491708 in g_main_context_iterate (context=0x7b0b40,
    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3712
#8 0x00007ffff5491b0a in g_main_loop_run (loop=0x178a320)
    at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3906
#9 0x00007ffff685d277 in gtk_main ()
   from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#10 0x00007ffff7a3d3bd in Gtk::Main::run(Gtk::Window&) ()
   from /usr/lib/x86_64-linux-gnu/libgtkmm-2.4.so.1
#11 0x00000000004a7dfc in RefWindow::run (this=this@entry=0x7fffffffdc80)
    at RefWindow.C:108
#12 0x0000000000428568 in main (argc=1, argv=0x7fffffffdf18) at main.C:96

[Mads Chr. Olesen (shiyee)]

Ubuntu reported bugs at:
https://bugs.launchpad.net/ubuntu/+source/referencer/+bug/1256567
https://bugs.launchpad.net/ubuntu/+source/referencer/+bug/1262820

[Mads Chr. Olesen (shiyee)]

I managed to painfully pin-point the problem to the ThumbnailGenerator and explicitly calling gdk_threads_init. We need to re-factor the ThumbnailGenerator anyway, so I will look at this.

[Mads Chr. Olesen (shiyee)]

For my own notes: There is a new Gnome3 thumbnailer described at http://askubuntu.com/questions/199110/how-can-i-instruct-nautilus-to-pre-generate-thumbnails/201997#201997

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "WIP patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]