hg: jdk8/tl/jdk: 8023234: StampedLock serializes readers on writer unlock

[paul.sandoz at oracle.com]

Changeset: 8a36fc7f494c
Author:    shade
Date:      2013-08-26 17:50 +0400
URL:       http://hg.openjdk.java.net/jdk8/tl/jdk/rev/8a36fc7f494c

8023234: StampedLock serializes readers on writer unlock
Summary: Sync-up the fix from jsr166 CVS, signal more readers on writer unlock
Reviewed-by: martin, shade
Contributed-by: Doug Lea <dl at cs.oswego.edu>

! src/share/classes/java/util/concurrent/locks/StampedLock.java
+ test/java/util/concurrent/locks/StampedLock/ReadersUnlockAfterWriteUnlock.java