--- old/src/hotspot/share/gc/g1/g1GCPhaseTimes.hpp	2018-04-11 13:44:03.476420189 +0200
+++ new/src/hotspot/share/gc/g1/g1GCPhaseTimes.hpp	2018-04-11 13:44:03.210412021 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 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
@@ -196,6 +196,9 @@
   // add a number of seconds to a phase
   void add_time_secs(GCParPhases phase, uint worker_i, double secs);
 
+  // Move a number of seconds from one phase to another.
+  void move_time_secs(GCParPhases from, GCParPhases to, uint worker_i, double secs);
+
   void record_thread_work_item(GCParPhases phase, uint worker_i, size_t count, uint index = 0);
 
   // return the average time for a phase in milliseconds