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Re: is it a bug of /glibc/sysdeps/arm/atomicity.h ?

On Mon, Feb 17, 2003 at 11:05:07AM -0500, Carlos O'Donell wrote:
> > > let us consider the following scenario. Suppose there are three thread
> > > pathes. 
> > > Init:   *p = 0
> > > T1 compare_and_swap(p, 0, 1) ; 
> > > T2 compare_and_swap(p,0,1); 
> > > T3 compare_and_swap(p,1,2);
> > 
> > Yes, that function is not actually atomic.  If you search the mailing
> > list archives for gcc@gcc.gnu.org you'll find several possible fixes;
> > no one's done any of them.
> 
> Can you get away with a light-weight syscall?

It's neither necessary nor desirable...

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer
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