hg: shenandoah/jdk8u/hotspot: [Backport] Shenandoah string deduplication

[zgu at redhat.com]

Changeset: e83d20a298be
Author:    zgu
Date:      2018-05-18 12:47 -0400
URL:       http://hg.openjdk.java.net/shenandoah/jdk8u/hotspot/rev/e83d20a298be

[Backport] Shenandoah string deduplication

! src/share/vm/gc_implementation/shenandoah/shenandoahConcurrentMark.cpp
! src/share/vm/gc_implementation/shenandoah/shenandoahConcurrentMark.hpp
! src/share/vm/gc_implementation/shenandoah/shenandoahConcurrentMark.inline.hpp
! src/share/vm/gc_implementation/shenandoah/shenandoahHeap.cpp
! src/share/vm/gc_implementation/shenandoah/shenandoahOopClosures.hpp
! src/share/vm/gc_implementation/shenandoah/shenandoahOopClosures.inline.hpp
! src/share/vm/gc_implementation/shenandoah/shenandoahPhaseTimings.cpp
! src/share/vm/gc_implementation/shenandoah/shenandoahPhaseTimings.hpp
! src/share/vm/gc_implementation/shenandoah/shenandoahRootProcessor.cpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahStrDedupQueue.cpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahStrDedupQueue.hpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahStrDedupQueue.inline.hpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahStrDedupTable.cpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahStrDedupTable.hpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahStrDedupThread.cpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahStrDedupThread.hpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahStringDedup.cpp
+ src/share/vm/gc_implementation/shenandoah/shenandoahStringDedup.hpp
! src/share/vm/gc_implementation/shenandoah/shenandoah_specialized_oop_closures.hpp
! src/share/vm/runtime/safepoint.cpp
+ test/gc/shenandoah/ShenandoahStrDedupStress.java
+ test/gc/shenandoah/TestShenandoahStrDedup.java