non-blocking reads/writes and event loops

[Todd Whitesel]

> I don't know.  Tcl is pretty much all event driven.  It took a lot of work
> to come up with a model that works well for all sorts of different input
> sources, and on a wide variety of different platforms, but having done the
> work, it is not that hard now to plug in new sources, and get them to play
> nice.  I guess I am saying that we have some models where, once correctly
> juked around, the results are quite nice.

While I agree with the theory here, I take issue with the statement that Tcl
implements it.

I was actually quite disappointed by the sources to Tcl/Tk 8.0.2 which
appear to have subtle sub-event loops creeping around whenever callbacks
are used.

-- 
Todd Whitesel
toddpw @ windriver.com