[bitbake-devel] [PATCH] bitbake: enable pdb tracing

[Martin Jansa]

On Fri, Aug 02, 2013 at 09:07:15PM -0400, Joe MacDonald wrote:
> On Fri, Aug 2, 2013 at 5:05 PM, Chris Larson <clarson at kergoth.com> wrote:
> 
> > On Thu, Aug 1, 2013 at 7:19 AM, <joe at deserted.net> wrote:
> >
> >> From: Joe MacDonald <joe at deserted.net>
> >>
> >> Based on:
> >>
> >>    http://blog.devork.be/2009/07/how-to-bring-running-python-program.html
> >>
> >> register a signal handler to dynamically start pdb tracing on receiving
> >> SIGUSR1.
> >>
> >> Signed-off-by: Joe MacDonald <joe at deserted.net>
> >>
> >
> > As long as you keep in mind this will only affect the UI, not the forked
> > off server, this could be useful. I'd suggest adding something for the
> > server as well, but it'd need to listen to a socket for the input, lacking
> > access to the user's tty, or would need to interface with the UI to do it :)
> >
> 
> That's a really good idea.  It seemed like anything was better than what I
> had at the time, but now that you mention it being able to use pdb (or
> something like it) to talk to one of the forked processes would be a really
> helpful with the current problem I'm looking at.  I'll see what I can do
> about extending this (since it doesn't sound like it's a fundamentally bad
> idea, just of limited applicability here) to more than just the UI.

Hi,

one type of hangs is described here
https://bugzilla.yoctoproject.org/show_bug.cgi?id=4338
I have no experience with pdb, but if it will help debuging this king of
issues I'll happily try it next time I get it hanging.

-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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