*** old/agent/src/share/classes/sun/jvm/hotspot/runtime/OSThread.java	Thu Jan 31 17:36:35 2013
--- new/agent/src/share/classes/sun/jvm/hotspot/runtime/OSThread.java	Thu Jan 31 17:36:35 2013

*** 1,7 ****
--- 1,7 ----
  /*
!  * Copyright (c) 2004, 2013, 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.

*** 30,39 ****
--- 30,40 ----
  
  // The OSThread class holds OS-specific thread information.  It is equivalent
  // to the sys_thread_t structure of the classic JVM implementation.
  public class OSThread extends VMObject {
      private static JIntField interruptedField;
+     private static JIntField threadIdField;
      static {
          VM.registerVMInitializedObserver(new Observer() {
              public void update(Observable o, Object data) {
                  initialize(VM.getVM().getTypeDataBase());
              }

*** 41,55 ****
--- 42,62 ----
      }
  
      private static synchronized void initialize(TypeDataBase db) {
          Type type = db.lookupType("OSThread");
          interruptedField = type.getJIntField("_interrupted");
+         threadIdField = type.getJIntField("_thread_id");
      }
  
      public OSThread(Address addr) {
          super(addr);
      }
  
      public boolean interrupted() {
          return ((int)interruptedField.getValue(addr)) != 0;
      }
+ 
+     public int threadId() {
+         return (int)threadIdField.getValue(addr);
+     }
+ 
  }