[mercury-users] Native garbage collector for Mercury

[Tyson Dowd]

On 14-Sep-1998, Thomas Charles CONWAY <conway at cs.mu.OZ.AU> wrote:
> Peter Schachte, you write:
> > of *which* io__state?  count, as I conceived it, takes an io__state as
> > input, and produces an io__state as output, and you aren't allowed to
> > change it between those points.  All parts of the io__state that are
> > needed to implement count *must* be there when you call count.
> > Otherwise you're cheating.
> 
> Ah. What you need is the semantics for fork/4 which we've worked out,
> but I'm still in the process of writing them up. Basically, fork is
> a cc_multi predicate that performs an "arbitary" interleaving of all
> the updates to the io__state of a pair of closures - Fergus alluded
> to it in his post earlier.

So in essence you are splitting the io__state into two states,
and fork defines the order of merging of those states (i.e. arbitrary
interleaving)?

--
Tyson.