testing the single QQmlEngine plasmashell

[Marco Martin]

And it's now merged in master, meaning that should be in 5.4, feel
free to test and search for problems ;)

On Mon, May 11, 2015 at 6:24 AM, Marco Martin <notmart at gmail.com> wrote:
> Hi all,
> I've pushed all what's needed for running plasmashell with a single
> QQmlEngine, surprisingly seemed to have taken less work/problems than i
> feared.
>
> the repos are needed are:
> * kdeclarative
> * plasma-framework
> * plasma-workspace
> * plasma-desktop
>
> the branch is always called mart/singleQmlEngineExperiment in all repos
> last two is due to all applets having added
> X-Plasma-RequiredExtensions=SharedEngine
> in the metadata file (still on the fence with an X-Plasma-RequiredAPIVersion
> key instead)
>
> now all applets in a default setup, in p-d and p-w should share one single
> engine (on a normal setup still networkmanager and bluetooth would make their
> own engines) could still need some change in plasmashell and kdeclarative if
> we want to go all the way and reuse the same engine for the desktop/panel
> views as well.
>
> please test it to see if there are obvious regressions, if it's faster or
> slower, more or less crashy, if it takes more or less memory (dere it slims by
> about 25 MB on a 32bit system, of about 40 on a 64 bit), good profiling of
> memory and startup time may be nice as well (will try in massif later)
> particularly important to test as many aplets as possible, as it may be
> perfect for one and break another
>
> known regression atm is broken translations but should be easily fixable
>
> --
> Marco Martin