hg: jdk/sandbox: 8231324: Shenandoah: avoid duplicated weak root works during final traversal

[chris.hegarty at oracle.com]

Changeset: 0279391875bf
Author:    zgu
Date:      2019-10-18 11:36 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/0279391875bf

8231324: Shenandoah: avoid duplicated weak root works during final traversal
Reviewed-by: rkennke

! src/hotspot/share/gc/shenandoah/shenandoahClosures.hpp
! src/hotspot/share/gc/shenandoah/shenandoahClosures.inline.hpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
! src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.cpp
! src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.hpp
! src/hotspot/share/gc/shenandoah/shenandoahTraversalGC.cpp