Patch: wake up duchainlock writers

[Milian Wolff]

On Tuesday 15 December 2009 00:24:29 David Nolden wrote:
> I've re-implemented the duchain locking now using a spin-lock behavior,
>  which makes the locking much faster at least in the single-threaded case.
> 
> The sleeping interval (for writers and readers alike) now is 500
>  nanoseconds, maybe that is enough to warrant a good multi-threaded
>  behavior?

I'm doing callgrind profiles over the night for single threads. Tomorrow I can 
also do with up to 9 threads (i7). Of course, PHP and duchainify (since remote 
machine). Please tell me what I should use for --threads N.

-- 
Milian Wolff
mail at milianw.de
http://milianw.de
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