K 10 svn:author V 7 davidxu K 8 svn:date V 27 2010-02-09T01:19:10.512883Z K 7 svn:log V 172 MFC r203414: After busied the lock, re-read state word before checking waiters flag, otherwise, the waiters bit may not be set and a wakeup is lost. Approved by: re (kib) END