[UI] Well, shall we do something then?

[Igor Stasenko]

On 17/09/2007, Bill Schwab <BSchwab at anest.ufl.edu> wrote:
> Dave,
>
> Thanks.  A related thought is the following: use critical sections early
> and often.  Deadlocks are (in my experience at least) generally easy to
> resolve from a dump of callstacks.  All but one thread will be waiting
> on a semaphore of some type; then look for the ones you created, and
> look for the critical sections to see if you are making it impossible
> for the code to run.  Common fixes involve (carefully!) splitting one
> critical section into pieces, adding a shared queue to move objects from
> source to sink thread, etc.  When interacting with the GUI, post an
> action to the input queue vs. making the calls directly from the worker
> thread.
>
> Bill
>
I generally interesting in something similar to javascript event
scheme. Don't remember details, but i think it worth some evaluation
and analysis, as well as others, for designing own event scheme
considering cos and pros of existing ones.

>
>
> Wilhelm K. Schwab, Ph.D.
> University of Florida
> Department of Anesthesiology
> PO Box 100254
> Gainesville, FL 32610-0254
>
> Email: bschwab at anest.ufl.edu
> Tel: (352) 846-1285
> FAX: (352) 392-7029
>
> >>> lewis at mail.msen.com 09/17/07 7:33 AM >>>
> On Sun, Sep 16, 2007 at 10:51:51PM -0400, Bill Schwab wrote:
> > Another thing to consider is that user interfaces tend to like
> > changes to be injected on their main thread.  I forget the name of
> > Squeak's notion of a "deferred action," but I can find it later if
> there
> > is a need - I suspect you or one of our peers will be able to provide
> > the relevant selector name.  My primary contribution is to ask whether
> > you have considered it.  I tend to queue GUI updates whether they need
> > it or not ;)
>
> The selector is WorldState class>>addDeferredUIMessage:
>
> See also http://bugs.squeak.org/view.php?id=1578 if MVC consistency is
> if interest.
>
> Dave
>
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-- 
Best regards,
Igor Stasenko AKA sig.