K 10
svn:author
V 7
davidxu
K 8
svn:date
V 27
2010-11-05T00:07:56.023194Z
K 7
svn:log
V 257
Merge condition variable work from previous work from
libthr.user_requeue. if the current thread is using the simple
mutex, use userlevel cv, otherwise use kernel based cv.
userlevel cv is fast. may there are other cases, thread
should use kernel based cv.

END