Subj : Re: A question about atomic_ptr
To   : comp.programming.threads
From : Alexander Terekhov
Date : Mon Apr 11 2005 02:22 pm


Chris Thomasson wrote:
> 
> >> if ( ! atomic_dec_release( &shared_ptr<X>::refs ) )
> >
> > Depending on value, you'll need either acquire or release here.
> 
> Ahh yes... Release on > 0 and Acquire for < 1 correct?

Well, given that in my (unwritten) book, mad std::string cows "eat" 
("OS" comes from Apple) OSAtomicDecrementIfGreaterThanOneSlbHsb32() 
with checking and no msync for zero ("unsharable" indicator), I'd 
say "almost". Okay? ;-)

regards,
alexander.

.