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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
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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
> 


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