Subj : Re: posix and lock-free algorithms
To   : comp.programming.threads
From : David Schwartz
Date : Thu Aug 04 2005 11:22 am


"John Doug Reynolds" <smspiff@fastmail.fm> wrote in message 
news:1123158538.643009.66240@z14g2000cwz.googlegroups.com...

>     void memory_barrier() { mutex m; m.lock(); m.unlock(); }
>
> does not work for that purpose.  According to David Schwartz,
>
> "In principle, that could be optimized by a sufficiently smart
>  implementation to nothing."

    I was wrong about that. According to POSIX, these functions fully 
synchronize memory.

    DS

.