Date: Tue, 12 Dec 2000 15:06:29 -0600 From: Jonathan Lemon <jlemon@flugsvamp.com> To: John Baldwin <jhb@FreeBSD.ORG> Cc: arch@FreeBSD.ORG Subject: Re: An opaque refcount type Message-ID: <20001212150629.B37608@prism.flugsvamp.com> In-Reply-To: <XFMail.001212122450.jhb@FreeBSD.org> References: <XFMail.001212122450.jhb@FreeBSD.org>
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On Tue, Dec 12, 2000 at 12:24:50PM -0800, John Baldwin wrote:
> Here's another bikeshed war for everyone to get in on: I've implemented a
> relatively light weight and very simple opaque reference counter. It defines
> an opaque refcount_t type. In the INVARIANTS case, this maps to a structure
I find myself wanting something more like a gated refcount; if the
gate is "open", then bump the reference (all atomically), otherwise
fail. However, it isn't quite clear what to do on a release, and it
probably is not going to fit into this model.
I can say at this point that I'm going to need something more
complicated than what is proposed for reference counts on route entries
and code that can be kld{load/unload}ed.
--
Jonathan
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