hg: shenandoah/jdk: Improve scheduling and interleaving of SATB processing in mark loop

[ashipile at redhat.com]

Changeset: d20598df82ba
Author:    shade
Date:      2018-06-18 15:39 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/d20598df82ba

Improve scheduling and interleaving of SATB processing in mark loop

! src/hotspot/share/gc/shenandoah/shenandoahConcurrentMark.cpp
! src/hotspot/share/gc/shenandoah/shenandoahConcurrentMark.hpp
! src/hotspot/share/gc/shenandoah/shenandoahConcurrentMark.inline.hpp
! src/hotspot/share/gc/shenandoah/shenandoahTraversalGC.cpp