1 /*
   2  * Copyright 2000-2007 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 package sun.jvm.hotspot.debugger;
  26 
  27 /** <P> This is a tag interface (similar to Cloneable) which indicates
  28     that the contained address is "special" and is updated under the
  29     hood by the VM. The purpose is to support implementation of
  30     reflection on the current VM with these interfaces; if the Java
  31     code implementing parts of the VM requires proxies for objects in
  32     the heap, it must be the case that those proxies are updated if GC
  33     occurs. This is the level at which this updating is handled. The
  34     VM (and specifically the GC code) must have intimate knowledge of
  35     the VM-specific implementation of this interface. </P>
  36 
  37     <P> Note that in the case of debugging a remote VM, it is not
  38     workable to handle the automatic updating of these handles.
  39     If the debugger allows the VM to resume running, it will have to
  40     look up once again any object references via the path they were
  41     found (i.e., the activation on the stack as the root, etc.) </P>
  42 */
  43 
  44 public interface OopHandle extends Address {
  45 }