hg: jdk/sandbox: 8223215: Shenandoah: Support verifying subset of roots

[chris.hegarty at oracle.com]

Changeset: b99e97bc5040
Author:    zgu
Date:      2019-05-15 08:58 -0400
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/b99e97bc5040

8223215: Shenandoah: Support verifying subset of roots
Reviewed-by: shade, rkennke

! 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/shenandoahRootVerifier.cpp
+ src/hotspot/share/gc/shenandoah/shenandoahRootVerifier.hpp
! src/hotspot/share/gc/shenandoah/shenandoahVerifier.cpp
! src/hotspot/share/gc/shenandoah/shenandoahVerifier.hpp