Messages in this thread | | | From | "Manfred Spraul" <> | Subject | Re: Use semaphore for producer/consumer case... | Date | Mon, 26 Mar 2001 19:12:55 +0200 |
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From: "Stelian Pop" <stelian.pop@fr.alcove.com> > > > > That doesn't work, at least the i386 semaphore implementation doesn't > > support semaphore counts < 0. > > Does that mean that kernel semaphore can not be used for something > else than mutual exclusion ? > It's a bit better: counts >= 0 are supported, i.e. you can call up() before down(), and that's used in several places.
The for loop that Nigel proposed should solve your problem. Multiple up's are handled correctly.
-- Manfred
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