local_weak_ptr ?

[tower120]

I do understand that local_shared_ptr <=> shared_ptr . And that local_shared_ptr is basically wrap shared_ptr.

But which "weak counter" use weak_ptr? Here:

   local_shared_ptr<X> px(new X());
   weak_ptr<X> wp(px);

local or atomic? From interface described in documentation - I suppose atomic. Because it's impossible to get local_shared_ptr directly from weak_ptr.

So... Is it possible to have local_weak_ptr?

[pdimov]

No, it's not possible to have a local_weak_ptr. A local_shared_ptr may share ownership with a normal shared_ptr, or with another local_shared_ptr in a different thread. To properly keep track of ownership, the weak pointer has to be atomic.

[tower120]

I see. Maybe there is need in non-convertible version of local_shared_ptr? Plus, I suppose non-convertible version would be more efficient... Something like unsync_shared_ptr / unsync_weak_ptr ?