Date: Thu, 28 Mar 2002 14:14:31 -0800 (PST) From: Julian Elischer <julian@elischer.org> To: Bosko Milekic <bmilekic@unixdaemons.com> Cc: John Baldwin <jhb@FreeBSD.ORG>, arch@FreeBSD.ORG Subject: Re: SMP safe reference counting Message-ID: <Pine.BSF.4.21.0203281412340.53693-100000@InterJet.elischer.org> In-Reply-To: <20020328164618.A95605@unixdaemons.com>
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On Thu, 28 Mar 2002, Bosko Milekic wrote: > > On Thu, Mar 28, 2002 at 09:45:02AM -0500, John Baldwin wrote: > > > > On 28-Mar-2002 Bosko Milekic wrote: > > > > > > I don't think we really need a ref. count API, per-se. I can think of > > > several places that may need to do ref. counting but wouldn't want to > > > do it with a bus-locked instruction because their reference counter(s) > > > are already protected by an existing mutex. > > > > > > -Bosko > > > > Those places wouldn't use the API then I think. However, this would be good > > for things like ucreds, pargs, uidinfos and others. > > Yeah, absolutely. I was just pointing out that there's little point > in having a reference counting API when a lot of the reference counting > implementations won't be using it. but a lot would.. and that's GOOD. John, can you put your sugfgested API up again? I remember it would work but was (in my mind) 'different'. I didn't think it was intuative but at least get it up for discussion.. (I posted my suggested API a few mails ago.. I'm sure it too has weaknesses though) Julian > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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