Re: [Qemu-devel] [RFC v0 5/8] object: make interfaces concrete

[Anthony Liguori]

On 06/13/2012 08:38 AM, Paolo Bonzini wrote:
> Il 13/06/2012 15:36, Anthony Liguori ha scritto:
> > > >
> > >
> > > Concrete doesn't mean "instantiatable by the user".  It means
> > > "instantiatable period".
> >
> > Interfaces are not supposed to be instantiatable by anyone.  The fact
> > that object_new() is used to create the interface is an internal
> > implementation detail.
>
> Whose side effect is that interfaces need to be concrete.
>
> > Interfaces are stateless and by definition, never have an implementation
> > on their own.  So object_new() of an interface type directly results in
> > a useless object.
>
> Yes, and that's why you needn't really care about what the user does.
> Garbage in, garbage out...

Quick chat on IRC and I think we both agree that we need to promote the notion 
of Interface to a first class concept in QOM.

I'll send out a patch later today (that's actually tested..).

Regards,

Anthony Liguori

> Paolo