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