Subj : Re: std::msync
To   : comp.programming.threads
From : Peter Dimov
Date : Sat Apr 02 2005 05:43 pm

Alexander Terekhov wrote:
> bool lock() throw() {
>   return use_count_.increment_if_not_min(); // naked
> }

msync::naked_competing, IIUC? Is cmpxchg on x86 a proper implementation of 
naked_competing, or does it need a lock prefix? And if lockless cmpxchg is 
fine,

> void add_ref() throw() {
>   use_count_.increment(); // naked
> }

should this use cmpxchg too instead of lock inc/lock xadd?

.