RFC: blocking DBus calls

[David Faure]

On Saturday 05 November 2011 13:00:14 Aaron J. Seigo wrote:
> hi... another policy suggestion:
> 
> DBus calls made from within classes should always be async calls and not
> block the class unless one of the following conditions is met:
> 
> * The class can easily be put into a separate thread, so as not to block the
> host application.
> 
> * The DBus call can be guaranteed to take a minimal round trip time
> ("instant" reply gaurantee)
> 
> .. this is another one we keep getting hit with in Plasma, krunner and
> elsewhere. usually it's just "lazy" programming and it absolutely destroys
> user interface fluidity, which is more and more important as we move to more
> animated and fluid UIs.

Seems sensible, but I guess the whole arguing will be over "minimal round trip 
time". What concrete issues did you end up having?

Oh no, I know what you're going to answer .... kservice calling kbuildsycoca4 
which can take a long time... I still need to come up with a better design for 
that stuff ... somewhen.

-- 
David Faure, faure at kde.org, http://www.davidfaure.fr
Sponsored by Nokia to work on KDE, incl. KDE Frameworks 5