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comparison agent/src/share/classes/sun/jvm/hotspot/debugger/OopHandle.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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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 }