[Python-Dev] uthread strawman
Guido van Rossum
Tue, 07 Nov 2000 21:58:20 -0500
> > I hope that it will be possible to make it a lot simpler than current
> > stackless though, by not doing continuations.
> My feeling is that this won't be the case. The fundamental
> change of structure needed to make it stackless will be
> much the same, as will the thought processes necessary
> to understand how it works.
I hope you are wrong but you may be right. I'll have to have a good
look -- or someone else (not Christian! With all due respect his code
is unreadable :-).
> > Where it gets tricky is when this spawns a new uthread, which also
> > calls C which calls Python... The solution is simply that the
> > application "shouldn't do that."
> I worry that this is going to be a rather severe restriction.
> For instance, it may make it impossible to spawn a uthread
> from within a callback from a GUI framework. Since with many
> GUI frameworks the entire application gets executed in
> callbacks, you wouldn't be able to use uthreads at all with
> such a framework.
But that's the same problem that current stackless has. I take it
that you don't see the point of stackless then? That's fine. Maybe
this is not an application that could use uthreads. They seem more
something for servers anyway.
--Guido van Rossum (home page: http://www.python.org/~guido/)