RFR(S): Parallelize CLDG and CodeCache root scanning and evacuation

[Roman Kennke]

Am Donnerstag, den 13.10.2016, 12:18 -0400 schrieb Zhengyu Gu:
> Hi,
> 
> This investigation was based Roman's suggestion. By parallelizing
> CLDG and CodeCahe root scanning and evacuation, it results about
> 4% improvement of critical-jOPS without much impact on max-jOPS on
> SPECjbb2015 tests.
> 
> 
> Webrev: http://cr.openjdk.java.net/~zgu/par-scan/webrev.01/

Sorry for late reply, somehow it slipped through my attention ;-)

It's great, please push!

Most of it seems potentially useful for other GCs, so keep it on the
list for proposing upstream. Although we'll have to wait for jdk10 to
branch off...

Cheers,
Roman