--- a/hotspot/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/VM.java	Mon Dec 19 16:26:22 2016 +0100
+++ b/hotspot/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/VM.java	Tue Dec 20 13:35:40 2016 +0300
@@ -38,6 +38,7 @@
 import sun.jvm.hotspot.types.*;
 import sun.jvm.hotspot.utilities.*;
 import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.classfile.*;
 
 /** <P> This class encapsulates the global state of the VM; the
     universe, object heap, interpreter, etc. It is a Singleton and
@@ -80,6 +81,7 @@
   private SymbolTable  symbols;
   private StringTable  strings;
   private SystemDictionary dict;
+  private ClassLoaderDataGraph cldGraph;
   private Threads      threads;
   private ObjectSynchronizer synchronizer;
   private JNIHandles   handles;
@@ -660,6 +662,13 @@
     return dict;
   }
 
+  public ClassLoaderDataGraph getClassLoaderDataGraph() {
+    if (cldGraph == null) {
+      cldGraph = new ClassLoaderDataGraph();
+    }
+    return cldGraph;
+  }
+
   public Threads     getThreads() {
     if (threads == null) {
       threads = new Threads();