--- old/src/hotspot/share/gc/g1/g1MonitoringSupport.hpp	2018-02-13 12:35:58.570519784 +0900
+++ new/src/hotspot/share/gc/g1/g1MonitoringSupport.hpp	2018-02-13 12:35:58.411516929 +0900
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -124,6 +124,8 @@
   CollectorCounters*   _incremental_collection_counters;
   //  full stop-the-world collections
   CollectorCounters*   _full_collection_counters;
+  //  stop-the-world phases in G1
+  CollectorCounters*   _conc_collection_counters;
   //  young collection set counters.  The _eden_counters,
   // _from_counters, and _to_counters are associated with
   // this "generational" counter.
@@ -212,6 +214,9 @@
   CollectorCounters* full_collection_counters() {
     return _full_collection_counters;
   }
+  CollectorCounters* conc_collection_counters() {
+    return _conc_collection_counters;
+  }
   GenerationCounters* young_collection_counters() {
     return _young_collection_counters;
   }