Problem with garbaje collection phase

Desktop Ruby-Gnome 2
1

Hello,

I’m having problems with the execution of various programs with ruby
ruby 1.8.7 (2008-08-11 patchlevel 72), and ruby-gnome2 0.17.0~rc1-6.
When
I run the programs, always stop and arise and message like:

./unidades.rb:210: [BUG] object allocation during garbage collection
phase
ruby 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux]

Abortado

This programs are very important for me, because I had worked on them
during the past years and I use them for my work. They are very large
programs, and
I can’t put here to reproduce this problem.

My question is: Is a ruby problem o a ruby-gnome2 problem? Is there any
fix in progress?. Is there anyone with the same problem?

The only way in that I can work with my programs from now is working
with libruby1.8 (1.8.6.114-2)

Thanks
Antonio Ignacio Cabrera Santana

2

On Wed, Oct 22, 2008 at 1:13 PM, Antonio Ignacio Cabrera Santana
[email protected] wrote:

Hello,

I’m having problems with the execution of various programs with ruby ruby
1.8.7 (2008-08-11 patchlevel 72), and ruby-gnome2 0.17.0~rc1-6. When
I run the programs, always stop and arise and message like:

./unidades.rb:210: [BUG] object allocation during garbage collection phase
ruby 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux]

This happens typically when using ruby >= 1.8.7 with ruby-gtk2 <
0.17.0. You have to either downgrade ruby or upgrade ruby-gtk2.

–
Guillaume C. - Guillaume Cottenceau

3

hi,

i have this issue now with the followind combination:
dev-lang/ruby-1.8.6_p287-r11
dev-ruby/rcairo-1.8.0
dev-ruby/ruby-atk-0.18.1-r1
dev-ruby/ruby-gdkpixbuf2-0.18.1-r1
dev-ruby/ruby-glib2-0.18.1-r1
dev-ruby/ruby-gtk2-0.18.1-r1
dev-ruby/ruby-gtksourceview-0.18.1
dev-ruby/ruby-pango-0.18.1-r1
dev-ruby/ruby-prof-0.7.2
dev-ruby/rubygems-1.3.1

i thought it was fixed in 0.17.0 (according to
Rg2 misbehaving with ruby 1.8.7? - Ruby-Gnome 2 - Ruby-Forum)

any news on that?

thanks in advice
balint

4

i can get rid of this error only, if i downgrade to ruby-1.8.6_p114.
both on x86 and amd64.

5

hi,

i was attempting to write a small script to catch the bug, but very soon
ended up with the attached one resulting this:

$ ruby gc_bug_attempt.rb
Xlib: extension “RANDR” missing on display “:0.0”.
“1.8.6”
[2, 14, 7]
[0, 18, 1]
Segmentation fault

clicking the button segfaults.
this is not the garbage allocation bug.

can you reproduce this?

6

Hi,

In [email protected]
“Re: [ruby-gnome2-devel-en] problem with garbaje collection phase” on
Mon, 26 Jan 2009 19:48:25 +0200,
Dobai-Pataky Bálint [email protected] wrote:

i can get rid of this error only, if i downgrade to ruby-1.8.6_p114. both on
x86 and amd64.

Could you show us your test script? I’ll test it on my
environment.

Thanks,

kou

7

Kouhei S. wrote:

$ ruby gc_bug_attempt.rb

% svn co Ruby-GNOME 2 download | SourceForge.net ruby-gnome2
% cd ruby-gnome2
% ruby extconf.rb
% make > /dev/null
% ruby for x in /tmp/ruby-gnome2/*; do echo -n "-I$x/lib -I$x -I$x/src/lib -I$x/src "; done /tmp/gc_bug_attempt.rb

Thanks,

kou

the Segmentation fault generated by the gc_bug_attempt.rb is gone, but
the
[BUG] object allocation during garbage collection phase
ruby 1.8.6 (2008-08-11) [i686-linux]

/usr/lib/ruby/1.8/drb/drb.rb:585: [BUG] Segmentation fault
ruby 1.8.6 (2008-08-11) [i686-linux]

is there in trunk, so i’ll try to simulate it in gc_bug_attempt.rb.

thanks Kou

8

Hi,

In [email protected]
“Re: [ruby-gnome2-devel-en] problem with garbaje collection phase” on
Tue, 27 Jan 2009 23:25:05 +0200,
Dobai-Pataky Bálint [email protected] wrote:

clicking the button segfaults.
this is not the garbage allocation bug.

can you reproduce this?

Thanks for show a sample program.
But I can’t reproduce it with:

  • ruby 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux]
  • Ruby-GNOME2 trunk

If you can, could you try Ruby-GNOME2 trunk?

% cd /tmp
% svn co

ruby-gnome2
% cd ruby-gnome2
% ruby extconf.rb
% make > /dev/null
% ruby for x in /tmp/ruby-gnome2/*; do echo -n "-I$x/lib -I$x -I$x/src/lib -I$x/src "; done /tmp/gc_bug_attempt.rb

Thanks,

kou

9

Kou, i found it, narrowed it down to the attached script.

tested it with rg2 Revision: 3589

affected ruby versions:
ruby 1.8.6 (2008-08-11 patchlevel 287) [i686-linux]
ruby 1.8.7 (2008-08-11 patchlevel 72) [i686-linux]

here are my results:
ruby for x in /opt/ruby-gnome2/*; do echo -n "-I$x/lib -I$x -I$x/src/lib -I$x/src "; done ruby/gc_bug_attempt.rb
“ruby:1.8.6, gtk:[2, 14, 7],rg2:[0, 19, 0]”
“start 02”
“created: #<Gtk::TreeView:0xb5dc76c4 ptr=0x827f050>”
“start 03”
“destroying: #<Gtk::TreeView:0xb5dc76c4 ptr=0x827f050>”
ruby/gc_bug_attempt.rb:33: [BUG] object allocation during garbage
collection phase
ruby 1.8.6 (2008-08-11) [i686-linux]

ruby/gc_bug_attempt.rb:33: [BUG] Segmentation fault
ruby 1.8.6 (2008-08-11) [i686-linux]

unaffected ruby version: ruby 1.8.6 (2008-03-03 patchlevel 114)
[i686-linux]
ruby for x in /opt/ruby-gnome2/*; do echo -n "-I$x/lib -I$x -I$x/src/lib -I$x/src "; done ruby/gc_bug_attempt.rb
Xlib: extension “RANDR” missing on display “:0.0”.
“ruby:1.8.6, gtk:[2, 14, 7],rg2:[0, 19, 0]”
“start 02”
“created: #<Gtk::TreeView:0xb5d7f720 ptr=0x845a030>”
“start 03”
“destroying: #<Gtk::TreeView:0xb5d7f720 ptr=0x845a030>”
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
“created: #<Gtk::TreeView:0xb5d7f6f8 ptr=0x845a200>”
“start 04”
“destroying: #<Gtk::TreeView:0xb5d7f6f8 ptr=0x845a200>”
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
ruby/gc_bug_attempt.rb:20: warning: GRClosure invoking callback: already
destroyed
“created: #<Gtk::TreeView:0xb5d7f6bc ptr=0x845a3d0>”
…

if i trigger GC myself, then it needs 2 runs, if not, it needs around 11
runs on my athlon64/x86_32/3G ram, gentoo
just run it and press the button until the bug appears.

another thing, i got a question, at line 42 there is a block, is there
wrong something with that? i’d like to use that, i want to save some
settings done by the user on TreeViewColumn.destroy

hope it helps finding it
thank you
balint

10

Hi,

In [email protected]
“Re: [ruby-gnome2-devel-en] problem with garbaje collection phase” on
Thu, 29 Jan 2009 10:17:07 +0200,
Dobai-Pataky Bálint [email protected] wrote:

Kou, i found it, narrowed it down to the attached script.

Thanks! I can reproduce the problem.

Detail:

  1. GC
  2. Gtk::Object is destroyed
  3. Gtk::Object emits “destroy” signal
  4. You create an object
  5. “[BUG] object allocation during garbage collection”

Workaround:
before:
col.signal_connect(“destroy”){|me| p “destroy: #{me.inspect}”}
after:
# col.signal_connect(“destroy”){|me| p “destroy: #{me.inspect}”}

I’ll consider other solution but don’t expect quick
fixing. I’m very busy now…

Perhaps Ruby 1.8.8 will not occur the problem because Ruby
1.8.8 defers destroying some objects after mark&sweep phase.

Thanks,

kou

11

Thanks for working on this guys. I didn’t know it before but I think
I’ve been caught by this bug.

best,
Dan

Daniel L.
http://www.daniellucraft.com/

12

Kouhei S. wrote:

Thanks! I can reproduce the problem.
col.signal_connect(“destroy”){|me| p “destroy: #{me.inspect}”}
after:
# col.signal_connect(“destroy”){|me| p “destroy: #{me.inspect}”}

i thought it’s triggered at line 16.

I’ll consider other solution but don’t expect quick
fixing. I’m very busy now…

no problem, thank you for confirming it.

Perhaps Ruby 1.8.8 will not occur the problem because Ruby
1.8.8 defers destroying some objects after mark&sweep phase.

until than i stick at 1.8.6_p114
thanks
balint