mcostalba/Stockfish — pull request #60 by jromang (2013-04-29 06:55:23+00:00)
Title: Support the hashfull UCI info

As decripbed here, support the hashfull UCI command : http://wbec-ridderkerk.nl/html/UCIProtocol.html
* hashfull
the hash is x permill full, the engine should send this info regularly

This is just an approximaiton, but should be a good indicator.