> -----Original Message-----
> From: Jecel Assumpcao Jr [mailto:jecel at merlintec.com]
> Sent: Tuesday, August 21, 2001 5:20 PM
> To: squeak-dev at lists.squeakfoundation.org
> Cc: modsqueak at bluefish.se
> Subject: Re: [Modules] Components or Modules??
> 
> 
> On Tuesday 21 August 2001 14:27, Withers, Robert wrote:
> > Do you have a link to NewtonOS soups?
> 
> This seems like a great place to start:
> 
>    http://www.best.com/~wsmith/works.html
>

Thanks for the link.  Soups and Stores with Domain Managers, I see.

> > I think your concept of Viewpoints is like my UserSpace, no?
> 
> Actually, your UserSpace would be what I call a "Session", 
> though there 
> is an overlap between the two ideas. Hmmm... I don't seem to 
> have a web 
> description of that anywhere.
> 
> But it is very simple - just think of sessions as separate VMs that 
> have some shared memory but mostly communicate using messages. A 
> special "boot session" has direct access to the hardware (or OS) and 
> each logged in person has a separate "user session".

This is exactly what I would like to see within one Squeak image.
Communication should be normal sends, and the context of the reference
should transform that send appropriately.

> >  It is also the context of an OasisModule, I believe.
> 
> Very likely.
> 
> > Cross space references would be an interesting problem, that I have
> > been toying with for the past year or so  (see AddressSpaces in the
> > outdated, and limited Chatter).  I'm getting ready to ask 
> Allen about
> > this in Firewall..:)
> 
> I started working on my design in 1984. It isn't simple to get it 
> simple. Lately I have made progress by throwing things out, including 
> cross space references (if you don't count proxies).

So you used to have a cross-space reference that wasn't a proxy pattern?  Or
rather it was implemented differently than the standard "subclass from
ProtoObject" style proxy?  If so, how did you work it?  I have a proxy that
works, and with the Delegation model, from Stephen, we can preserve
identity; however, I want it to be completely transparent, if possible.  It
would require VM support, I believe.  I am clearly violating the 80/20 rule,
but I feel that it would open many, many doors.  It is a pluggable proxy,
with the ability to transform the message send. It should be completely
weightless, aside from the oop header and 2 slots, target and
messageManager.  Perhaps we have a registry of managers, that we lookup
using a referenceHandle, to cut an oop from the stack.  If we could use a
bit in the Oop header, we may be able keep it to 2 words.  Thus I am out to
learn the vm, and stop talkin' about it so much.  :)

- Rob

> -- Jecel
> 
> 
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