Re: [boost] [intrusive_ptr] atomic ref counting?

From: Peter Dimov (pdimov_at_[hidden])
Date: 2006-04-15 15:15:56

Tomas Puverle wrote:
>> shared_ptr doesn't use atomic_count because the addition of weak_ptr
>> has made atomic_count's interface insufficient.
>
> Can you please elaborate on what you mean?  Are you saying that you
> cannot implement atomic refcouting because of weak pointers?

No.

I am saying that the sort of atomic reference counting needed by shared_ptr 
can't be implemented on top of the current interface (and implementation) of 
boost::detail::atomic_count.