hg: jdk10/hs/hotspot: 8178836: Improve PtrQueue index abstraction

[kim.barrett at oracle.com]

Changeset: f37660e24e9e
Author:    kbarrett
Date:      2017-05-08 07:16 -0400
URL:       http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/f37660e24e9e

8178836: Improve PtrQueue index abstraction
Summary: Prefer element indexes where possible.
Reviewed-by: shade, mgerdin

! src/share/vm/gc/g1/dirtyCardQueue.cpp
! src/share/vm/gc/g1/g1CollectedHeap.cpp
! src/share/vm/gc/g1/ptrQueue.cpp
! src/share/vm/gc/g1/ptrQueue.hpp
! src/share/vm/gc/g1/satbMarkQueue.cpp
! src/share/vm/gc/g1/satbMarkQueue.hpp