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Re: 2(void ) atomic swap?

To: tech-kern%netbsd.org@localhost
Subject: Re: 2*(void *) atomic swap?
From: Joerg Sonnenberger <joerg%britannica.bec.de@localhost>
Date: Sun, 9 Aug 2015 14:25:08 +0200

On Thu, Jul 30, 2015 at 06:23:33PM +0000, Taylor R Campbell wrote:
>    I don't think you can have a portable function like that.
> 
> Not that hard:
> 
> - On i386, use cmpxchg8b.

Just for the archive, this effectively means Pentium+. There are
actually 486-class SMP systems.

Joerg

Follow-Ups:
- Re: 2*(void *) atomic swap?
  - From: Thor Lancelot Simon

References:
- Re: 2*(void *) atomic swap?
  - From: Dennis Ferguson
- Re: 2*(void *) atomic swap?
  - From: Taylor R Campbell

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