src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/g1/G1CollectedHeap.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2019, 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -30,12 +30,13 @@
 import java.util.Observer;
 
 import sun.jvm.hotspot.debugger.Address;
 import sun.jvm.hotspot.gc.shared.CollectedHeap;
 import sun.jvm.hotspot.gc.shared.CollectedHeapName;
-import sun.jvm.hotspot.gc.shared.SpaceClosure;
+import sun.jvm.hotspot.gc.shared.LiveRegionsClosure;
 import sun.jvm.hotspot.gc.shared.PrintRegionClosure;
+import sun.jvm.hotspot.gc.shared.SpaceClosure;
 import sun.jvm.hotspot.memory.MemRegion;
 import sun.jvm.hotspot.runtime.VM;
 import sun.jvm.hotspot.runtime.VMObjectFactory;
 import sun.jvm.hotspot.types.AddressField;
 import sun.jvm.hotspot.types.CIntegerField;

@@ -136,10 +137,19 @@
     public CollectedHeapName kind() {
         return CollectedHeapName.G1;
     }
 
     @Override
+    public void liveRegionsIterate(LiveRegionsClosure closure) {
+        Iterator<HeapRegion> iter = heapRegionIterator();
+        while (iter.hasNext()) {
+            HeapRegion hr = iter.next();
+            closure.doLiveRegions(hr);
+        }
+    }
+
+    @Override
     public void printOn(PrintStream tty) {
         MemRegion mr = reservedRegion();
 
         tty.print("garbage-first heap");
         tty.print(" [" + mr.start() + ", " + mr.end() + "]");