hg: jdk/sandbox: 8228490: Shenandoah: Shenandoah concurrent root evacuation may race against OopStorage::release()

[chris.hegarty at oracle.com]

Changeset: a2912ba36422
Author:    zgu
Date:      2019-07-22 16:32 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/a2912ba36422

8228490: Shenandoah: Shenandoah concurrent root evacuation may race against OopStorage::release()
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