[Boost-users] [asio] File I/O

I know I'm not the first person to bring this up and it seems that some work has been done: http://lists.boost.org/Archives/boost/2006/03/102350.php . Does anybody know if Felipe has posted his code somewhere? Or when we might an implementation of asynchronous file I/O in asio itself? Failing that - is there some class in the library (or examples) which would be a suitable starting point or reference/guide for creating a non-socket asynchronous I/O service? Thanks in advance.