--- old/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/shared/GenCollectedHeap.java	2019-02-13 16:34:59.446271458 +0100
+++ new/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/shared/GenCollectedHeap.java	2019-02-13 16:34:59.062271471 +0100
@@ -28,6 +28,7 @@
 import java.util.*;
 
 import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.gc.shared.*;
 import sun.jvm.hotspot.runtime.*;
 import sun.jvm.hotspot.types.*;
 import sun.jvm.hotspot.utilities.*;
@@ -134,6 +135,14 @@
     }
   }
 
+  public void liveRegionsIterate(LiveRegionsClosure closure) {
+    // Run through all generations, obtaining bottom-top pairs.
+    for (int i = 0; i < nGens(); i++) {
+      Generation gen = getGen(i);
+      gen.liveRegionsIterate(closure);
+    }
+  }
+
   public void printOn(PrintStream tty) {
     for (int i = 0; i < nGens(); i++) {
       tty.print("Gen " + i + ": ");