Subj : Re: Double-width CAS?
To   : comp.programming.threads
From : Joseph Seigh
Date : Fri Jan 14 2005 07:36 pm

On Tue, 11 Jan 2005 11:12:59 +0800, Eerf Kcol <NOSPAM_lockfree@gmail.com> wrote:

> Hi,
>
> In building lockfree algorithms, we often see CAS. But double-width CAS has
> also been mentioned quite a lot.
>
> What is double-width CAS? What is the difference/advantage it has over
> CAS? Can you give an example of its usage when it has an advantage over CAS.
>

http://atomic-ptr-plus.sourceforge.net/

The advantage is you can do things that are impossible to do with CAS
in some cases.

-- 
Joe Seigh

.