Re: [gambit-list] shift/reset with *correct* dynamic environment

On 30-Oct-07, at 8:29 PM, James Long wrote:

Marc... what are thoughts on a native implementation of shift/reset?

It is on my TODO (it was the first thing I added to the Gambit wish list page!). I think a correct implementation of shift/reset is necessary to properly serialize continuations and do distributed parallel computation. The hard part in all of this is to find a good representation for the dynamic environment. The problem I see with the PLT Scheme implementation is that the dynamic wind stack must be copied (in O(n)) when a delimited continuation is invoked. I think I have found a solution, but it is only by going through the details that I can confirm that it works.

Marc