[issue11618] Locks broken wrt timeouts on Windows

[Antoine Pitrou]

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

> I'm just providing this as a fast alternative to the Semaphore, which
> as far as I know, will cause a kernel call every time.

A Semaphore might be "slow", but I'm not sure other primitives are
faster. For the record, I tried another implementation using a critical
section, and it's not significantly faster under a VM (even though MSDN
claims critical sections are fast).

Have you timed your solution?

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