hg: jdk/sandbox: 8232747: Shenandoah: Concurrent GC should deactivate SATB before processing weak roots

[chris.hegarty at oracle.com]

Changeset: ef2b75750838
Author:    zgu
Date:      2019-10-22 11:59 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/ef2b75750838

8232747: Shenandoah: Concurrent GC should deactivate SATB before processing weak roots
Reviewed-by: shade

! src/hotspot/share/gc/shenandoah/shenandoahConcurrentMark.cpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
! src/hotspot/share/gc/shenandoah/shenandoahMarkCompact.cpp