[mythtv] Crash of MythMusic

[Gerhard Gappmeier]

Hi Stuart,

sorry for my late answer, but your mail was in my spam folder...
I attached my backtrace already in my last mail.
It was version 0.20 (revsision 12172) on Gentoo.
I already checked out HEAD from subversion and compiled it,
but I had no time to test for now.
I also use MythTV for recording via DVB-T.
So I can test if I see deadlocks with the patch.
But first I will test the current version without the patch
to see if the problem still happens.
I think so, because the list still isn't lock.

regards,
Gerhard.

On Tuesday 20 March 2007 16:33, Stuart Morgan wrote:
> On Tuesday 20 March 2007 14:59:50 Gerhard Gappmeier wrote:
> > Hi all,
> >
> > I experience a crash of MythMusic like discussed in
> > http://svn.mythtv.org/trac/ticket/2557 .
> >
> > I can reproduce the problem all the time when I'm doing the following:
> > 1.) Start MythMusic and play MP3s AND M4A files. (you need two file
> > types for the problem)
> > 2.) Leave MythMusic
> > 3.) Start MythMusic again. When it starts playing it crashes.
> >
> > My backtrace looks pretty much the same as already in the system.
>
> What version? If head I'd be interested in the backtrace even if it does
> appear to point to the same problem.
>
> > In my opinion the mythobservable.patch
> > <http://svn.mythtv.org/trac/attachment/ticket/2557/mythobservable.patch>
> > is the right solution for the problem,
> > but I have not tested it yet. (Will do that as soon as possible)
> > Iterating over a list without locking is never a good idea,
> > when the list is also used from other threads.
> >
> > What was the reason that this patch has been removed?
>
> The patch caused problems (deadlocks ?) in every other part of mythtv
> basically preventing it from working at all. When I get some free time I'll
> try to sort it out - unless someone else figures it out before then.