[E-Lang] multithreading

[Ben Laurie]

> "Jonathan S. Shapiro" wrote:
> 
> In the context of the multithreading discussion, I want to point out
> that there are things that can't really be done *without* preemptive
> multithreading, and that some of them are a damned nuisance. We're
> running into a few of these in the EROS work right now.
> 
> The most obvious is flow control on full-duplex streams. You have an
> input stream and an output stream, and the input stream needs to be
> able to preempt the output stream when XOFF arrives. I think it's
> worth noting that E relies on the underlying runtime to hide certain
> types of underlying asynchrony (like this one).
> 
> Hmm. I was going to write a longer note, but I see that time has
> gotten away from me. Here is the challenge question: how should
> full-duplex streams be managed in E?

I don't understand why this is any harder to do in an event loop than in
a threaded system?

Cheers,

Ben.

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