--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/oops/MethodData.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2000-2004 Sun Microsystems, Inc.  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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+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.*;
+
+// A MethodData provides interpreter profiling information
+
+public class MethodData extends Oop {
+  static {
+    VM.registerVMInitializedObserver(new Observer() {
+        public void update(Observable o, Object data) {
+          initialize(VM.getVM().getTypeDataBase());
+        }
+      });
+  }
+
+  private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
+    Type type      = db.lookupType("methodDataOopDesc");
+    baseOffset     = type.getSize();
+
+    size           = new CIntField(type.getCIntegerField("_size"), 0);
+    method         = new OopField(type.getOopField("_method"), 0);
+    // FIXME: add more fields and accessors
+  }
+
+  MethodData(OopHandle handle, ObjectHeap heap) {
+    super(handle, heap);
+  }
+
+  public boolean isMethodData()        { return true; }
+
+  private static long baseOffset;
+  private static CIntField size;
+  private static OopField  method;
+
+  public long getObjectSize() {
+    return alignObjectSize(size.getValue(this));
+  }
+
+  public Method getMethod() {
+    return (Method) method.getValue(this);
+  }
+
+  public void printValueOn(PrintStream tty) {
+    Method m = getMethod();
+    tty.print("MethodData for " + m.getName().asString() + m.getSignature().asString());
+  }
+
+  public void iterateFields(OopVisitor visitor, boolean doVMFields) {
+    super.iterateFields(visitor, doVMFields);
+    if (doVMFields) {
+      visitor.doOop(method, true);
+      visitor.doCInt(size, true);
+    }
+  }
+}