hg: jdk/jdk: 8200557: OopStorage parallel iteration scales poorly

[kim.barrett at oracle.com]

Changeset: 9f758f0bb058
Author:    kbarrett
Date:      2018-05-03 17:36 -0400
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/9f758f0bb058

8200557: OopStorage parallel iteration scales poorly
Summary: Change representation of sequence of all blocks for better scaling.
Reviewed-by: coleenp, eosterlund

! src/hotspot/share/gc/shared/oopStorage.cpp
! src/hotspot/share/gc/shared/oopStorage.hpp
! src/hotspot/share/gc/shared/oopStorage.inline.hpp
! src/hotspot/share/gc/shared/oopStorageParState.hpp
! src/hotspot/share/gc/shared/oopStorageParState.inline.hpp
! test/hotspot/gtest/gc/shared/test_oopStorage.cpp
+ test/hotspot/gtest/gc/shared/test_oopStorage_parperf.cpp