Re: [PATCH 0/24] make atomic_read() behave consistently across allarchitectures

From: Arjan van de Ven
Date: Mon Sep 10 2007 - 09:53:28 EST


On Mon, 10 Sep 2007 11:56:29 +0100
Denys Vlasenko <vda.linux@xxxxxxxxxxxxxx> wrote:

>
> Well, if you insist on having it again:
>
> Waiting for atomic value to be zero:
>
> ÂÂÂÂÂÂÂÂwhile (atomic_read(&x))
> ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂcontinue;
>

and this I would say is buggy code all the way.

Not from a pure C level semantics, but from a "busy waiting is buggy"
semantics level and a "I'm inventing my own locking" semantics level.

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