Re: debugging the gtk fe
Here's what Mike has found out:
Okay it looks like a bug outside of gtk Davide and I got a standalone dev
env its attached. Bottom line is it looks like its outside the gtk code at
least now. I've got no idea what going on with the forked process etc etc.
I've never attached gdb through forks but it looks like one of the child
process crashed prob not the frontend.
In short I don't see what I can do to help here except I do note that mutiple
frontends are supported do the otheres work. Failing that a few printfs to
track the initialization of the gtk fronted so you could attach and break
in the debugger before the crash is possible. I'm not in a position to build.
If the bug is only in the gtk frontend then printfs and commenting out code
can isolate the problem area so you know where to attach the debugger thats
what I have to do.
Mike
Here is and important email
Hi Mike,
I should mention that last night I did not find what the cause of the crash
is, but I managed to grab an interesting gdb backtrace; atm I'm at work and
I don't have it. last night I posted it on the #debian-boot IRC channel,
and here is a message that could be interesting
http://lists.debian.org/debian-boot/2005/07/msg01014.html
let me know if you managed to start debconf
Here is the trace
---------------------- DirectFB v0.9.23 ---------------------
(c) 2000-2002 convergence integrated media GmbH
(c) 2002-2004 convergence GmbH
-----------------------------------------------------------
(*) DirectFB/Core: Single Application Core. (2005-07-21 22:02)
(*) Direct/Memcpy: Using MMXEXT optimized memcpy()
[New Thread 27106224 (LWP 14601)]
(*) Direct/Thread: Running 'SDL Input' (INPUT, 14601)...
(!!!) *** UNIMPLEMENTED [fusion_reactor_set_lock] *** [reactor.c:802]
(*) DirectFB/Input: SDL Input 0.1 (Denis Oliver Kropp)
(*) DirectFB/Genefx: MMX detected and enabled
(*) DirectFB/Graphics: MMX Software Rasterizer 0.6 (convergence integrated
media GmbH)
(*) DirectFB/Core/WM: Default 0.2 (Convergence GmbH)
[New Thread 66788272 (LWP 14602)]
(*) Direct/Thread: Running 'EventBufferFeed' (MESSAGING, 14602)...
(debconf:14598): Gdk-DirectFB-WARNING **: gdk_display_request_selection_notification
Unimplemented function
(debconf:14598): Gdk-DirectFB-WARNING **: gdk_window_set_keep_above() not
implemented.
(debconf:14598): Gdk-DirectFB-WARNING **: gdk_window_set_keep_below() not
implemented.
Detaching after fork from child process 14604.
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1208772928 (LWP 14598)]
0x00000000 in ?? ()
(gdb) bt
#0 0x00000000 in ?? ()
#1 0x006d2379 in frontend_delete (obj=0x9fed348) at frontend.c:208 #2 0x08048a30
in cleanup () at debconf.c:41 #3 0x08048abf in sighandler (sig=17) at debconf.c:65
#4 <signal handler called> #5 0x00fd8402 in __kernel_vsyscall () #6 0x0080bd3b
in __read_nocancel () from /lib/libc.so.6 #7 0x006cf833 in confmodule_communicate
(mod=0xa0f2a20) at confmodule.c:77 #8 0x0804918a in main (argc=4, argv=0xbf85f134)
at debconf.c:153
(gdb) quit
On 7/27/05, Mike Emmel <mike.emmel@gmail.com> wrote:
> On 7/27/05, Attilio Fiandrotti <fiandro@tiscalinet.it> wrote:
> > since i'm very interested in the debugging of the frontend, could
> > you add me in the cc list?
>
> Sure no problem your on for me. At the moment nothing happening I'm missing
>
> linux-gate.so.1 => (0x00815000)
> libdebconf.so => not found
> libdl.so.2 => /lib/libdl.so.2 (0x00357000)
> libc.so.6 => /lib/libc.so.6 (0x00205000)
> /lib/ld-linux.so.2 (0x001e7000)
> libdebian-installer.so.4 => not found
>
> And want the source for the gtk part.
>
> Mike
>
>
> I'm currently missing these libs
>
>
> >
> > thanks
> >
> > attilio
> > Mike Emmel wrote:
> > > On 7/27/05, Davide Viti <zinosat@tiscali.it> wrote:
> > >
> > >>I recompiled DirectFB with --enable-debug=yes
> > >>here are some more details:
> > >>
> > >>http://www.webalice.it/zinosat/dfb_2.7_dbgen2.png
> > >>http://www.webalice.it/zinosat/dfb_2.7_dbgen.png
> > >>
> > >>hope this helps,
> > >>Davide
> > >>
> > >
> > > Yep you crashed :(
> > >
> > > I've got your app I'll try and run it.
> > >
> > > This is the last time I'll cc the list we can just continue with
> > > private emails. Mine is mike.emmel@gmail.com if its not showing
> > > for you.
> > >
> > > Mike
> > >
> > > _______________________________________________
> > > directfb-dev mailing list
> > > directfb-dev@directfb.org
> > > http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev
> > >
> >
> >
>
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