[D-runtime] thread_needLock() and related code

Martin Nowak dawg at dawgfoto.de
Mon Jun 25 10:00:35 PDT 2012

On Sun, 24 Jun 2012 18:53:23 +0200, Sean Kelly <sean at invisibleduck.org>  

> Nope. I think the function is effectively ignored these days anyway.
I recently tried to measure performance differences w.r.t. always locking  
in the GC and didn't found any.
Spinlocking an uncontended lock is fairly cheap but I've not tested this  
on Windows.

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