[issue11618] Locks broken wrt timeouts on Windows

[sbt]

sbt <shibturn at gmail.com> added the comment:

Have you tried benchmarking it?

Interlocked functions are *much* faster than Win32 mutex/semaphores in the uncontended case.  

It only doubles the time taken for a "l.acquire(); l.release()" loop in Python code, but at the C level it is probably 10 times slower.  

Do you really want the GIL to be 10 times slower in the uncontended case? ;-)

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