diff -r f3187578ddd3 -r 48fd3da4025c hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/InstanceKlass.java
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/InstanceKlass.java	Sun Mar 25 18:08:52 2012 -0400
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/InstanceKlass.java	Thu Mar 29 22:18:56 2012 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2012, 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
@@ -52,7 +52,6 @@
   private static int HIGH_OFFSET;
   private static int GENERIC_SIGNATURE_INDEX_OFFSET;
   private static int FIELD_SLOTS;
-  public static int IMPLEMENTORS_LIMIT;
 
   // ClassState constants
   private static int CLASS_STATE_UNPARSABLE_BY_GC;
@@ -70,13 +69,6 @@
     methodOrdering       = new OopField(type.getOopField("_method_ordering"), Oop.getHeaderSize());
     localInterfaces      = new OopField(type.getOopField("_local_interfaces"), Oop.getHeaderSize());
     transitiveInterfaces = new OopField(type.getOopField("_transitive_interfaces"), Oop.getHeaderSize());
-    nofImplementors      = new CIntField(type.getCIntegerField("_nof_implementors"), Oop.getHeaderSize());
-    IMPLEMENTORS_LIMIT   = db.lookupIntConstant("instanceKlass::implementors_limit").intValue();
-    implementors         = new OopField[IMPLEMENTORS_LIMIT];
-    for (int i = 0; i < IMPLEMENTORS_LIMIT; i++) {
-      long arrayOffset = Oop.getHeaderSize() + (i * db.getAddressSize());
-      implementors[i]    = new OopField(type.getOopField("_implementors[0]"), arrayOffset);
-    }
     fields               = new OopField(type.getOopField("_fields"), Oop.getHeaderSize());
     javaFieldsCount      = new CIntField(type.getCIntegerField("_java_fields_count"), Oop.getHeaderSize());
     constants            = new OopField(type.getOopField("_constants"), Oop.getHeaderSize());
@@ -136,8 +128,6 @@
   private static OopField  methodOrdering;
   private static OopField  localInterfaces;
   private static OopField  transitiveInterfaces;
-  private static CIntField nofImplementors;
-  private static OopField[] implementors;
   private static OopField  fields;
   private static CIntField javaFieldsCount;
   private static OopField  constants;
@@ -317,9 +307,6 @@
   public TypeArray getMethodOrdering()      { return (TypeArray)    methodOrdering.getValue(this); }
   public ObjArray  getLocalInterfaces()     { return (ObjArray)     localInterfaces.getValue(this); }
   public ObjArray  getTransitiveInterfaces() { return (ObjArray)     transitiveInterfaces.getValue(this); }
-  public long      nofImplementors()        { return                nofImplementors.getValue(this); }
-  public Klass     getImplementor()         { return (Klass)        implementors[0].getValue(this); }
-  public Klass     getImplementor(int i)    { return (Klass)        implementors[i].getValue(this); }
   public TypeArray getFields()              { return (TypeArray)    fields.getValue(this); }
   public int       getJavaFieldsCount()     { return                (int) javaFieldsCount.getValue(this); }
   public int       getAllFieldsCount()      { return                (int)getFields().getLength() / FIELD_SLOTS; }
@@ -527,9 +514,6 @@
       visitor.doOop(methodOrdering, true);
       visitor.doOop(localInterfaces, true);
       visitor.doOop(transitiveInterfaces, true);
-      visitor.doCInt(nofImplementors, true);
-      for (int i = 0; i < IMPLEMENTORS_LIMIT; i++)
-        visitor.doOop(implementors[i], true);
       visitor.doOop(fields, true);
       visitor.doOop(constants, true);
       visitor.doOop(classLoader, true);