Re: [spice-server 2/8] Move RedChannel::data to ClientCbs::cbs_data

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> 
> On Tue, Mar 15, 2016 at 05:11:36PM -0400, Frediano Ziglio wrote:
> > > -static void red_channel_client_default_disconnect(RedChannelClient
> > > *base)
> > > +static void red_channel_client_default_disconnect(RedChannelClient
> > > *base,
> > > gpointer cbs_data)
> > >  {
> > >      red_channel_client_disconnect(base);
> > >  }
> > > @@ -1062,7 +1062,7 @@ RedChannel *red_channel_create(int size,
> > >  
> > >      client_cbs.connect = red_channel_client_default_connect;
> > >      client_cbs.disconnect = red_channel_client_default_disconnect;
> > > -    client_cbs.migrate = red_channel_client_default_migrate;
> > > +    client_cbs.migrate =
> > > (channel_client_migrate_proc)red_channel_client_default_migrate;
> > > 
> > 
> > I don't like these kind of cast. Why don't you add a parameter (unused)
> > to these functions?
> 
> red_channel_client_default_migrate() is not used only as a
> ClientCbs::migrate vfunc, it's also called a few times in other code
> (red_migrate_display() for example).
> red_channel_client_default_migrate(rcc, NULL) did not look so great
> there, and I prefer to have a cast rather than an intermediate function
> with the right number of args calling directly the real function with
> one arg less.
> 
> Christophe
> 

I still don't like these casts.

What about this:
https://cgit.freedesktop.org/~fziglio/spice-server/commit/?h=christophe&id=f3660395933ccd3198d59f52c02d6bb6f34788e7

Actually considering this function

static void red_channel_client_migrate_client(RedChannelClient *rcc)
{
    rcc->channel->client_cbs.migrate(rcc, rcc->channel->client_cbs.cbs_data);
}

why not using rcc->channel->client_cbs.cbs_data inside the callback?
Without the parameter change both subject and comment make sense so looks like
adding the parameter is not necessary.

Frediano
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