Re: glib ref counting problem

[Stefan Kost <kost imn htwk-leipzig de>]

Hi Russel,

Russell Shaw wrote:
> Stefan Kost wrote:
>
> > hi hi,
> >
> > hope that someone can enlighten me with my understanding of the gobject
> > ref-counting regarding to object destruction.
> >
> > I have a gobject called BtSong. Upon construction it creates instances of
> > BtPattern, BtSetup and so on where it passes itself along.
> > Thus each child object now holds a reference to the BtSong object.
> > When the application that initialy created the BtSong instance is
> > done, it would
> > like to destroy the object with all the accosiated ressources. It
> > therefore
> > calles g_object_unref(song);.
> > Now the problem is that this only decreases the ref-count from e.g. 5
> > to 4,
> > because the child objects still have their reference on it.
> > Therefore the dispose() routine is not called and therefore the BtSong
> > does not
> > release (unref) its child objects.
> >
> > Apparently I have not yet understand the gobject system fully :-(
> > Can anyone tell me how to do it properly?
>
> Do you need BtPattern etc to ref BtSong?
When I receive a reference to an object and I keep this reference localy, I
should ref it.
> Unref BtPattern etc in BtSong dispose handler, and in BtPattern etc
> dispose handlers, unref BtSong.
I posted a more detailed description to Tristans reply. Hopefully that makes the
deadlocking situation clearer.

Ciao
  Stefan
-- 
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