RFR (XL): JDK-8086706 Parallel Full GC for CMS

[Jungwoo Ha]

Bug: https://bugs.openjdk.java.net/browse/JDK-8086706
Code: http://cr.openjdk.java.net/~jwha/8086706/webrev.00

Here is our code for parallel full GC in CMS.
We've enabled this by default for a long time, so it won't cause any crash
easily.
We see spaces for improvements in scalability, but correctness-wise it
should be okay.
Though I had to do some manual edit to create the patch.

Please take a look and let me know.
Jon, can you sponsor this change?

-- 
Jungwoo Ha
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.org/pipermail/hotspot-gc-dev/attachments/20150610/538eb8e6/attachment.htm>