--- a/src/hotspot/share/gc/g1/g1ConcurrentRefineThread.hpp	Tue Oct 08 20:47:46 2019 +0200
+++ b/src/hotspot/share/gc/g1/g1ConcurrentRefineThread.hpp	Tue Oct 08 15:15:50 2019 -0400
@@ -26,6 +26,7 @@
 #define SHARE_GC_G1_G1CONCURRENTREFINETHREAD_HPP
 
 #include "gc/shared/concurrentGCThread.hpp"
+#include "utilities/ticks.hpp"
 
 // Forward Decl.
 class G1ConcurrentRefine;
@@ -38,6 +39,10 @@
 
   double _vtime_start;  // Initial virtual time.
   double _vtime_accum;  // Accumulated virtual time.
+
+  Tickspan _total_refinement_time;
+  size_t _total_refined_cards;
+
   uint _worker_id;
 
   bool _active;
@@ -61,6 +66,9 @@
   // Activate this thread.
   void activate();
 
+  Tickspan total_refinement_time() const { return _total_refinement_time; }
+  size_t total_refined_cards() const { return _total_refined_cards; }
+
   // Total virtual time so far.
   double vtime_accum() { return _vtime_accum; }
 };