From: Avi Bryant <avi@...4.com>
Date: 2001-11-02T09:41:15+09:00
Subject: [ruby-talk:24130] cost of threads vs. continuations


How different are the costs of a continuation and a suspended thread?  It
seems like they ought to be almost identical, but is there anything in the
internals that makes one preferable to the other?  Is it reasonable to
have, say, a hundred or even a few hundred active threads or continuations
at once?

I'm playing with extending iowa to allow web apps written in something
like a continuation-passing style (normally, passing control to another
page is much like a goto, and I want to allow something that looks like
a subroutine call), and although the idea is most naturally expressed
using call/cc it may be hackable with threads instead.  Of course, if
continuations are cheaper, then I won't bother. ;-)

Avi