<<On Thu, 10 Dec 2009 00:24:28 +0000 (GMT), Robert Watson <rwat...@freebsd.org> 
said:

> It's beginning to sound like our POSIX semaphores should be behaving more 
> like 
> umtx, which requires only a shared page, and less like file descriptors.  Of 
> course, that would make the global namespace more tricky...

Ultimately, the problem is that "POSIX semaphores" are actually three
different kinds of object, which just happen to ostensibly use the
same programming interface.

-GAWollman

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