[issue15038] Optimize python Locks on Windows

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

> The implementation for multiprocessing.Condition is virtually the same
> as Listing 3 which the author says he thinks is "formally correct" but
> with "a fundamental performance problem".

To me, it seems similar to the last listing (under "The Sequel—NT and
PThreads"): there's a separate semaphore per waiter, used to wake it up
when signal() or broadcast() is called.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15038>
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