hg: jdk/sandbox: 8246612: Shenandoah: add timing tracking to ShenandoahStringDedupRoots

[chris.hegarty at oracle.com]

Changeset: 7de1c2fac4ca
Author:    zgu
Date:      2020-06-04 15:01 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/7de1c2fac4ca

8246612: Shenandoah: add timing tracking to ShenandoahStringDedupRoots
Reviewed-by: shade

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