[boost] Re: live_ptr => live_container / live_iterator

From: Greg Colvin (gcolvin_at_[hidden])
Date: 1999-08-15 12:16:38

From: Reid Sweatman <reids_at_[hidden]>
> 
> I can see benefits to going either way, so I wonder whether you couldn't
> combine them.  That is, use the registry method, but don't physically remove
> the pointer, even when its count goes to zero; that way, you'd get a (small)
> win by simply reassigning the nulled pointer, rather than having to
> reallocate it.  Don't know if this would be enough of a win to matter,
> though.  If not, I think I'd personally prefer deferred.  Or perhaps combine
> the two by maintaining a simple linked list of nulled pointers still in the
> map, sort of an available allocation pool.  I've written schemes like that
> often enough to appreciate having them built in.

I think an std::map of my weak_ptr, combined with a function to sweep out
null pointers, might provided such a deferred map.