El Thu, Apr 30, 2009 at 06:56:51PM -0400 Robert P. J. Day ha dit:
> that is, at least binary semaphores?
i'd say yes. afaik a binary semaphore offers no advantage over a
mutex, while mutexes have better performance and clearer and enforced
semantics.
> and are there any non-binary semaphores actually in use in the
> kernel?
some time ago i converted a huge bunch of binary semaphores to
mutexes or spinlocks. doing this i encountered some uses of non-binary
semaphores (maybe 10 - 20). i don't remember the places, grep or lxr
are your friends in case you are interested.
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