Date: Thu, 01 Feb 2001 10:52:04 -0800 From: Julian Elischer <julian@elischer.org> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-hackers@FreeBSD.org, Matthew Emmerton <matt@gsicomp.on.ca> Subject: Re: Atomic bit operations Message-ID: <3A79B054.BB13FA83@elischer.org> References: <XFMail.010201094914.jhb@FreeBSD.org>
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John Baldwin wrote: > > > The current implementation for it can be found at > http://www.FreeBSD.org/~jhb/patches/refcount.patch. It's all done with simple > atomic operations right now. > what I do at the moment is: do { v = node->nd_refs; } while (! atomic_cmpset_int(&node->nd_refs, v, v - 1)); if (v == 1) { /* we were the last */ .......whatever needs to be done } but I'd rather have something more 'direct' -- __--_|\ Julian Elischer / \ julian@elischer.org ( OZ ) World tour 2000-2001 ---> X_.---._/ v To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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