Problems with Win32/WinCE VMs - backing out of changes

Marcel Weiher marcel at system.de
Wed Sep 1 17:27:55 UTC 1999


> From: Dan Ingalls <Dan.Ingalls at disney.com>
> >I tried protected projects and they didn't really work for me...
>
> I'm not surprised.  The code that is there right now is only a  
first pass.
> If we were to give it a warrantee, it would be "Has worked at  
least once".

I should add that I wasn't *really* expecting the very first cut of  
this to "Just Work(tm)", although with something coming from you guys  
it was worth a try... :-)  It was just a non-scientific experiment  
on my part.

> I agree that a good copy-on-write scheme would be a really nice  
solution.  By
> lightening the save/restore overhead, it would allow a very simple 
> checkpoint/rollback mechanism.

It would also enable Squeak as a light-weight scripting engine.

Anyway, it's good to hear that this is considered a good thing by  
Squeak central, even if it's not a priority right now.  Would you be  
able to provide a little support for others implementing something  
along these lines or do you think it's hopeless?  I would certainly  
be willing to burn my Squeak-cycles on something like this while I  
wait for a pronouncement on EncodingFilters/MorphicPostscipt (and  
afterwards as well).

Marcel





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