atomic_*_barrier macros

[Rémi Denis-Courmont]

On Wed, 5 Aug 2009 22:34:00 -0400, Matt Turner <mattst88@gmail.com> wrote:
> What's the correct thing to do here? Could we add atomic macros for
> needed platforms and export atomic.h?

With recent enough GCC, I think you can get a full R/W barrier with the
__sync_synchronize() built-in (there is no support for weaker ones though)
on about any platform.

-- 
Rémi Denis-Courmont