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Re: Exclusive Locking: design in a nutshell

From: Michael W Thelen <thelenm_at_cs.utah.edu>
Date: 2004-05-21 19:09:52 CEST

* Greg Hudson <ghudson@MIT.EDU> [2004-05-21 10:21]:
> On Fri, 2004-05-21 at 02:41, Branko ─îibej wrote:
> > OTOH it is the most logical thing in the world for a locker to see
> > different contents of the locked resource than anyone else, after all
> > that's one of the reasons to lock it in the first place.
>
> It is? I thought the reason to lock a resource was so no one else could
> modify it (unless they're allowed to steal the lock, which I suppose is
> ACL fodder). Nothing more, nothing less.

That was my understanding, too. I agree with what Josh Pieper has said,
that the idea of collaborating on an uncommitted transaction (even if
it's just collaborating with yourself, I suppose) is orthogonal to
locking. I don't see why they need to be tied together.

-- Mike

-- 
Michael W. Thelen
It is the duty of every citizen according to his best capacities to give
validity to his convictions in political affairs.
                -- Albert Einstein, "Treasury for the Free World", 1946

Received on Fri May 21 19:11:33 2004

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