Subj : Re: A question about atomic_ptr
To   : comp.programming.threads
From : Chris Thomasson
Date : Sun Apr 17 2005 09:02 am

> I wonder if I am missing any race-conditions. The object compare after the 
> increment should work... Humm...

"Seems" to work for transferring a "shared" shared_ptr to a "strictly local" 
shared_ptr. Its an expensive technique as well ( smr based check "after" 
inc ); DWCAS would work like a charm.


And of course, transferring a "strictly local" shared_ptr to a "shared" 
shared_ptr would require another "tricky" scheme.


DWCAS ( when you have access to it! ) is looking more and more attractive 
wrt shared_ptr...

.