Re: Gnome Session Services Framework

[Bill Haneman <Bill Haneman Sun COM>]

Hi Mark;

A couple of comments follow...

Mark McLoughlin wrote:

> Hi Bill,
> 	Thanks, this sounds fairly straightforward.
>
> On Wed, 2005-07-13 at 14:24 +0100, Bill Haneman wrote:
>  
>
> > Hi Mark:
> >
> > Thanks for the reply.  Yes, I was thinking about when the ATs are 
> > started.  On thinking further I realize that my memory of AT startup 
> > order issues has become fuzzy, so I am probably forgetting some 
> > things.    Here's what I recall:
> >
> > 1) g-s-d needs to have been started before any applications (including 
> > the panel, nautilus, etc.); this is probably true generally of gnome and 
> > so isn't relevant to the Session Services discussion.  
> >    
>
> 	I don't think its true that g-s-d absolutely has to be started before
> all other apps - applications should be able to react to most, if not
> all, changes g-s-d makes, I think - but we certainly would prefer if
> apps didn't map a window before g-s-d set the gtk+ theme Xsetting, for
> example.
>  
The 'accessibility' gconf key has to be set before any apps start, since 
there is currently no means for loading accessibility support "after the 
fact".

> 	So, its not as simple as "don't start any apps until g-s-d has applied
> all its settings", since there's a lot these apps could be doing before
> they need g-s-d to have applied its settings.
>
>  
>
> > Similarly 
> > bonobo-activation needs to be working on first query.
> >    
>
> 	The first app which makes a query launches b-a-s, so there's no
> implications here, I think.
>  
Right.

> > 2) gnome-session's own environment needs to include any 
> > accessibility-specific env settings such as GNOME_DISABLE_CRASH_DIALOG=1 
> > and GTK_MODULES=gail:atk-bridge (the latter for GTK-only apps that need 
> > to be accessible).  Again, probably not affected by the Session Services 
> > proposal.
> >    
>
> 	And, indeed, I think D-BUS needs to have these env variables. If any
> app is launched using D-BUS activation, those apps need to have those
> env variables too.
>
>  
Sounds correct to me.

> > 3) Performance is much better if ATs are started last, because otherwise 
> > they have to process a stream of events that are mostly just a result of 
> > 'constructing' the desktop services and apps. 
> >    
>
> 	Right, that sounds sensible.
>  
Thanks again

Bill

> Cheers,
> Mark.
>
>