Re: [Vala] Problem with Closure in Coroutine

[Jürg Billeter <j bitron ch>]

On Sun, 2009-12-13 at 13:00 +0100, Michael 'Mickey' Lauer wrote:
> Am Sonntag, den 13.12.2009, 11:01 +0100 schrieb Jürg Billeter:
> > On Sat, 2009-12-12 at 19:18 +0100, Michael 'Mickey' Lauer wrote:
> > > The problem seems to be that the data for the closure
> > > (_data_->_data2_)
> > > gets unref'ed when the function ends; however Gst is calling the
> > > callback later on and then the instance is 0x0. The C code for this
> > > function is:
> >
> > Can you check whether it works if you use add_watch_full() instead of
> > add_watch()?
>
> Awesome, that does it! Should we then change add_watch like
>
> -                public uint add_watch (Gst.BusFunc func);
> +                public uint add_watch (owned Gst.BusFunc func);
> ?

No, this is not possible as the C function gst_bus_add_watch does not
have a GDestroyNotify parameter which is necessary to support owned
delegates. However, I've now fixed the binding to always use
gst_bus_add_watch_full to avoid such issues.

Jürg