Re: So, what the heck is a continuation anyway?

[Dan Sugalski <address@hidden>]

At 11:00 AM 12/10/2001 -0500, Jeremy Hylton wrote:
> >>>>> "DS" == Dan Sugalski <dan@sidhe.org> writes:
>
>   DS> can I get a continuation object/marker from within A and pass it
>   DS> to B, which then triggers it and returns to A even though I've
>   DS> unwound the stack frames for A?
>   >>
>   >> Sure.
>   >>
>   >> You can invoke the continuation and return through A an arbitrary
>   >> number of times.
>
>   DS> Hmmm. That means I need to snapshot the stack frames and the
>   DS> scratchpads.  Doable.
>
>The problem we run into with Python is that there are so many places
>where C stack frames get intermingled with a chain of Python stack
>frames:

Perl's stack is pretty much independent of the C/system stack, so that's 
not a problem. We have other problems to compensate, of course. :)


					Dan

--------------------------------------"it's like this"-------------------
Dan Sugalski                          even samurai
dan@sidhe.org                         have teddy bears and even
                                      teddy bears get drunk