On Sat, Jun 08, 2002 at 02:39:33PM -0400, Dan Sugalski wrote: > >Instead of using some space on the stack, co-routines can store all > >their local variables into their closure. Then, there is no need to > >swap in any context. > > You still need to store the stack frames created since the start of > the coroutine when picking up after the yield. Otherwise we're > declaring that coroutines can't use any stack at the point a yield is > called, which is a rather big thing to declare.
Python-style co-routines have this very restriction. If we want real co-routines, we can build them on top of callcc, which will take care of storing the stack frames. -- Jerome
