Subj : Re: A question about atomic_ptr
To   : comp.programming.threads
From : Peter Dimov
Date : Mon Apr 11 2005 03:30 pm

Alexander Terekhov wrote:
>>>>  if ( ! atomic_dec_acquire( &shared_ptr<X>::refs ) )
>
> That must be upcoming Apple's OSAtomicDecrementRelAcq32() or
> OSAtomicDecrementSlbHsb32() (when X is immutable while managed
> by shared_ptr<>). ;-)

Speaking of which, is it possible to implement the ...SlbHsb variant in a 
more efficient manner on a PPC? On something else? (More effcient than the 
....RelAcq, of course.)

.