Re: [riena-dev] GenerationalListenerList

[Stefan Liebig <Stefan.Liebig@xxxxxxxxxxxx>]

 Hi Elias,

No problem - they are already clipped. ;-)
Independent of any profiling/measurements it is/was a fun project. Just 
to explore if there other solutions.

However, profiling one of our example applications showed e.g. that the 
two listener lists within the NavigationNode were asked about 420 times 
for their iterator when switching the error markers on to off.
Of course we should also ask the question here: are all those 
iterations/notifications necessary?!

Tschüß,
Stefan


On 30.06.2010 23:44, Elias Volanakis wrote:
> Hi Stefan,
>
> I don't want to clip your wings, but I still wonder: how much do we
> gain when examined with a profiler? My gut feeling is that the VM is
> pretty good with garbage collection and the lists are relatively
> small...
>
> Cheers,
> Elias.
>
> On Wed, Jun 30, 2010 at 5:46 AM, Stefan Liebig
> <Stefan.Liebig@xxxxxxxxxxxx>  wrote:
> >   Hi,
> >
> > In the last few weeks while we were doing a few performance optimizations I
> > saw that we very often had the case (e.g. NavigationNode) that there was a
> > list (e.g. LinkedList) keeping track of the listeners. In the case of
> > notifying all the listeners, a copy of the list was created to be used by
> > the iterator. This was done to avoid modification exceptions because the
> > listeners could add or remove listeners.
> > I was thinking about a solution that would avoid creating copies. And so the
> > GenerationalListenerList was born.
> > It is in CVS now but not yet used. It is still in a very rough form but
> > usable. A few test cases exist but yet not covering everything.
> >
> > If you are interested - have a look at it and let me know what you are
> > thinking.
> >
> > Tschüß,
> > Stefan
> >
> >
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