1/*
2 * Copyright (c) 2001, 2012, 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
25package sun.jvm.hotspot.oops;
26
27import java.io.*;
28import java.util.*;
29import sun.jvm.hotspot.debugger.*;
30import sun.jvm.hotspot.interpreter.*;
31import sun.jvm.hotspot.runtime.*;
32import sun.jvm.hotspot.types.*;
33import sun.jvm.hotspot.utilities.*;
34
35public class CheckedExceptionElement {
36  static {
37    VM.registerVMInitializedObserver(new Observer() {
38        public void update(Observable o, Object data) {
39          initialize(VM.getVM().getTypeDataBase());
40        }
41      });
42  }
43
44  private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
45    Type type            = db.lookupType("CheckedExceptionElement");
46    offsetOfClassCPIndex = type.getCIntegerField("class_cp_index").getOffset();
47  }
48
49  private static long offsetOfClassCPIndex;
50
51  private Address   handle;
52  private long      offset;
53
54  public CheckedExceptionElement(Address handle, long offset) {
55    this.handle = handle;
56    this.offset = offset;
57  }
58
59  public int getClassCPIndex() {
60    return (int) handle.getCIntegerAt(offset + offsetOfClassCPIndex, 2, true);
61  }
62}
63