[Boost-users] [signals] scoped_blocker for connections?

From: Frank Mori Hess (frank.hess_at_[hidden])
Date: 2007-03-01 16:14:13

I wonder if it might be convenient to provide a scoped_blocker object that 
lets a connection be blocked/unblocked in an exception-safe way, similar 
to how a scoped_lock locks a mutex, or a scoped_ptr owns allocated memory.

A fancier scheme would be to provide a shared_blocker, where when you 
request a shared_block from the connection it does reference counting so 
the connection remains blocked until the last shared_blocker (requested by 
any connection handle object referring to the same connection body) goes 
out of scope.  This could be implemented with a shared_ptr that has a 
custom deleter, and a weak_ptr kept in the connection body to allow 
different connection handles to get copies of the same shared_ptr.

-- 
Frank