What kinds of things would you want in the GNU OS?

[John F. Haugh II]

In article <4347 at ficc.uu.net> peter at ficc.uu.net (Peter da Silva) writes:
>An efficient version of threads would not even duplicate the stack area...
>instead the child would have a virgin stack, wit its starting address
>passed from the parent. It's highlt desirable to make thread creation
>a cheap process.

You have to duplicate the stack - even if you only duplicate it via
a copy-on-write mechanism.

As you unwind stack frames in either thread, you would reach a point
where you start trashing the stack frames of the either thread.
-- 
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