--- /dev/null	Fri Sep  9 14:16:21 2011
+++ new/agent/src/share/classes/sun/jvm/hotspot/oops/ArrayData.java	Fri Sep  9 14:16:43 2011
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+
+package sun.jvm.hotspot.oops;
+
+import java.io.*;
+import java.util.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+import sun.jvm.hotspot.utilities.*;
+
+// ArrayData
+//
+// A ArrayData is a base class for accessing profiling data which does
+// not have a statically known size.  It consists of an array length
+// and an array start.
+abstract class ArrayData extends ProfileData {
+
+  static final int arrayLenOffSet = 0;
+  static final int arrayStartOffSet = 1;
+
+  int arrayUintAt(int index) {
+    int aindex = index + arrayStartOffSet;
+    return uintAt(aindex);
+  }
+  int arrayIntAt(int index) {
+    int aindex = index + arrayStartOffSet;
+    return intAt(aindex);
+  }
+  Oop arrayOopAt(int index) {
+    int aindex = index + arrayStartOffSet;
+    return oopAt(aindex);
+  }
+
+  // Code generation support for subclasses.
+  static int arrayElementOffset(int index) {
+    return cellOffset(arrayStartOffSet + index);
+  }
+
+  ArrayData(DataLayout layout) {
+    super(layout);
+  }
+
+  static int staticCellCount() {
+    return -1;
+  }
+
+  int arrayLen() {
+    return intAt(arrayLenOffSet);
+  }
+
+  public int cellCount() {
+    return arrayLen() + 1;
+  }
+
+  // Code generation support
+  static int arrayLenOffset() {
+    return cellOffset(arrayLenOffSet);
+  }
+  static int arrayStartOffset() {
+    return cellOffset(arrayStartOffSet);
+  }
+
+}