Hi Michael,

I think the word 'logged' is not the right word. When you send
#removeFromSystemUnlogged, what happens really is 'remove from system
without notifying'. You might want to try to unregister the classes
you do not want to be notified.

Bye

2007/10/16, Michael Fremont <fremontmj at gmail.com>:
> Thanks for explaining, Damien.
>
> I'm calling #removeFromSystemUnlogged because my program dynamically
> creates, uses, and discards lots of classes; logging all this makes it
> hard for me to see what really matters in the changeset.
>
> It seems to me that asking for something not to be *logged* is not the
> same as asking for side-effects like hanging onto a class that no
> longer exists.
>
> However, looking at the comment for
> SystemDictionary>>forgetClass:logged:, it says: 'Note that this
> doesn't do everything required to dispose of a class - to do that use
> Class>>removeFromSystem.  I call >>removeFromSystemUnlogged.
>
> I see also that in forgetClass>>logged, you must be depending on the
> SystemChangeNotifier>>classRemoved:fromCategory call to be notified...
> and that makes sense.
>
> I guess my problem is that I want only *some* side-effects, and not others!
>
> Thanks for your excellent work!
>
> Best,
>
> Mike
>
> On 10/15/07, Damien Cassou <damien.cassou at gmail.com> wrote:
> > Hi Michael
> >
> > 2007/10/15, Michael Fremont <fremontmj at gmail.com>:
> > > I have now downloaded the same image you're using.  I make no changes
> > > to it whatsoever.  Doing 'SystemNavigation default obsoleteClasses'
> > > returns an empty array.
> > >
> > > Then I make a new class 'Test'.  I delete it by doing: 'Test
> > > removeFromSystemUnlogged' in a workspace.
> >
> >
> > How do you want DynamicProtocols to update its cache if you explicitly
> > say «remove this silently»? Please send #removeFromSystem instead and
> > DynamicProtocols will be notified.
> >
> >
> > > Now 'SystemNavigation default obsoleteClasses' returns (AnObsoleteTest).
> > >
> > > Using PointerFinder I see that DPRecentlyModified's cache is holding a
> > > reference to the deleted class.
> > >
> > > Perhaps the problem is I'm not deleting the class through the browser?
> >
> >
> > You can bypass the browser, but you must use the notification system.
> >
> >
> > > I also noticed that turning off dynamicProtocolActivation in the
> > > Preference Browser doesn't make a difference;
> >
> >
> > It depends when you deactivate them. If you deactivate them in the
> > begining, their cache should not be updated. If you deactivate them
> > after having removed the class, it doesn't change anything.
> >
> > > and if I make a method
> > > with 'self halt' in it, the OB shows a red flag for that method, even
> > > though I turned off BOTH dynamicProtocolActivation AND Debugging.
> >
> >
> > The red flag is not part of the dynamicprotocols. It's a feature of
> > the OmniBrowser.
> >
> >
> > > Very strange.
> >
> > I hope things get clearer now.
> >
> > --
> > Damien Cassou
> >
> >
> >
> >
>
>


-- 
Damien Cassou