-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tuesday 10 August 2010, Hite, Christopher wrote:
shared_from_this contains a weak_ptr. Why not implement a weak_from_this() member function?
Upgrading and downgrading a shared_ptr costs expensive atomic ops. I've got some setup code that just gives weak_ptr's to boost::singals2::slot::track().
Is this a valid (and simple) feature request?
There is a boost/smart_ptr/enable_shared_from_raw.hpp which has a weak_from_raw() free function. Unfortunately, I never got around to documenting enable_shared_from_raw or trying to get it merged to release. The main difference from enable_shared_from_this is that enable_shared_from_raw is not a template class (no curiously recurring template pattern), and shared_from_raw()/weak_from_raw() are free template functions that take an argument instead of being member functions. Also, they can be used in constructors (although it can be dangerous to do so if you're not careful). -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkxh8u4ACgkQ5vihyNWuA4VgugCfX1W2edOqom9Yqhu66qdYOJfk L6gAoKLpsoqbyou1llEwBgFSmoJrwS91 =WD2B -----END PGP SIGNATURE-----