[squeak-dev] V3

Vanessa Freudenberg vanessa at codefrau.net
Mon Jan 11 22:56:51 UTC 2021

On Sat, Jan 9, 2021 at 7:09 AM David T. Lewis <lewis at mail.msen.com> wrote:

> On Fri, Jan 08, 2021 at 08:08:33PM -0800, Eliot Miranda wrote:
> > Hi V,
> >
> > On Tue, Jan 5, 2021 at 6:07 PM Vanessa Freudenberg <vanessa at codefrau.net
> >
> > wrote:
> >
> > > Reading the code I again noticed "Squeak V3" as name for the old
> bytecode
> > > set. Always wanted to know: Where does the "V3" nomenclature come from?
> > > What's V1 and V2? And should we consider Sista to be V4, or treat it as
> > > completely unrelated?
> > >
> >
> > In my diseased and uninformed mind V3 came from my noticing that the
> double
> > extended do anything bytecode didn't exist in Smalltalk-80, so I presumed
> > it wasn't in Squeak V1.  I don't know if it's in V2, and I was too lazy
> to
> > go look, but I did know it was in V3, so I called it, and the object
> > representation "V3".  Presumptuous but concise of me.  For me it really
> is
> > a label for no more than the state of play of Squeak when I came to start
> > changing its core execution engine.  I hope this is harmless enough.
> >
> I have become quite comfortable with the "V3" notation by now, regardless
> of its origins. I would prefer not to change it because I have used it
> extensively in some of my own personal projects (e.g. all of the package
> names in my http://www.squeaksource.com/TrunkUpdateStreamV3 hobby
> project).
> I also just like the name. "V3" is short and easily recognized, and it
> works nicely as a prefix or suffix in other names. To me, it also carries
> a vague connotation of "stable but not necessarily the latest thing".
> That's probably based on my recollection of early PC applications and
> operating systems where everyone knew not to trust any product until
> it reached at least version 3 ;-)
> Dave

Can we come up with some major VM milestones to retroactively label as V1 /
V2 / V3?

Off the top of my head these could be

* the original extension from ST80 to Squeak (as documented in Dan's "Back
to the future": 32 bit direct pointers, no refcounting, variable-length
object headers, etc)
* named primitives
* 64 bit support
* closures

V1 would be the 1996 one then
V3 might be the closure-supporting one (which year was that?)
V2 - ?

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