K 10
svn:author
V 7
weongyo
K 8
svn:date
V 27
2010-09-20T19:20:37.249079Z
K 7
svn:log
V 207
For readability explicitly takes a argument `needwakeup'.  In the
previous `isload' had two meanings that first the callback registered
should be called, second the wakeup isn't allowed that it's confusing.

END