1 /*
 2  * Copyright (c) 2020, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  *
23  */
24 
25 package sun.jvm.hotspot.oops;
26 
27 import sun.jvm.hotspot.debugger.*;
28 import sun.jvm.hotspot.memory.*;
29 import sun.jvm.hotspot.runtime.*;
30 import sun.jvm.hotspot.types.*;
31 import sun.jvm.hotspot.utilities.*;
32 import sun.jvm.hotspot.utilities.Observable;
33 import sun.jvm.hotspot.utilities.Observer;
34 
35 // An InstanceKlass is the VM level representation of a Java class.
36 
37 public class InstanceStackChunkKlass extends InstanceKlass {
38   static {
39     VM.registerVMInitializedObserver(new Observer() {
40         public void update(Observable o, Object data) {
41           initialize(VM.getVM().getTypeDataBase());
42         }
43       });
44   }
45 
46   private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
47     // Just make sure it's there for now
48     Type type = db.lookupType("InstanceStackChunkKlass");
49     System.out.println("InstanceStackChunkKlass: " + type);
50   }
51 
52   public InstanceStackChunkKlass(Address addr) {
53     super(addr);
54   }
55 }