first patch for process-shared semaphore

[Alexander Kabaev]

On Thu, 24 Dec 2009 09:58:50 +0800
David Xu <davidxu at freebsd.org> wrote:

> Alexander Kabaev wrote:
> > On Thu, 24 Dec 2009 09:22:34 +0800
> > David Xu <davidxu at freebsd.org> wrote:
> >> libthr does not require semaphore, it implements semaphore,
> >> it is easier than other ways to implement the process-shared.
> >>
> > Let me rephrase: I do not think semaphores belong in libthr. They
> > should be either in libc or in librt.
> > 
> > 
> OK, does others really implement semaphore in librt ?
> unfortunately, the librt already requires libpthread to implement
> SIGEV_THREAD.

I retract that. It appears that there is no consistency - Solaris put
these into libc, Linux into libpthread ans SUSv2 hints that these
belong with realtime functions. libthr is fine.

-- 
Alexander Kabaev
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