J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2005-2006 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | /* |
| 28 | * The contents of this file are subject to the Sun Public License |
| 29 | * Version 1.0 (the "License"); you may not use this file except in |
| 30 | * compliance with the License. A copy of the License is available at |
| 31 | * http://www.sun.com/, and in the file LICENSE.html in the |
| 32 | * doc directory. |
| 33 | * |
| 34 | * The Original Code is HAT. The Initial Developer of the |
| 35 | * Original Code is Bill Foote, with contributions from others |
| 36 | * at JavaSoft/Sun. Portions created by Bill Foote and others |
| 37 | * at Javasoft/Sun are Copyright (C) 1997-2004. All Rights Reserved. |
| 38 | * |
| 39 | * In addition to the formal license, I ask that you don't |
| 40 | * change the history or donations files without permission. |
| 41 | * |
| 42 | */ |
| 43 | |
| 44 | package com.sun.tools.hat.internal.model; |
| 45 | |
| 46 | import com.sun.tools.hat.internal.util.Misc; |
| 47 | |
| 48 | /** |
| 49 | * A forward reference to an object. This is an intermediate representation |
| 50 | * for a JavaThing, when we have the thing's ID, but we might not have read |
| 51 | * the thing yet. |
| 52 | * |
| 53 | * @author Bill Foote |
| 54 | */ |
| 55 | public class JavaObjectRef extends JavaThing { |
| 56 | private long id; |
| 57 | |
| 58 | public JavaObjectRef(long id) { |
| 59 | this.id = id; |
| 60 | } |
| 61 | |
| 62 | public long getId() { |
| 63 | return id; |
| 64 | } |
| 65 | |
| 66 | public boolean isHeapAllocated() { |
| 67 | return true; |
| 68 | } |
| 69 | |
| 70 | public JavaThing dereference(Snapshot snapshot, JavaField field) { |
| 71 | return dereference(snapshot, field, true); |
| 72 | } |
| 73 | |
| 74 | public JavaThing dereference(Snapshot snapshot, JavaField field, boolean verbose) { |
| 75 | if (field != null && !field.hasId()) { |
| 76 | // If this happens, we must be a field that represents an int. |
| 77 | // (This only happens with .bod-style files) |
| 78 | return new JavaLong(id); |
| 79 | } |
| 80 | if (id == 0) { |
| 81 | return snapshot.getNullThing(); |
| 82 | } |
| 83 | JavaThing result = snapshot.findThing(id); |
| 84 | if (result == null) { |
| 85 | if (!snapshot.getUnresolvedObjectsOK() && verbose) { |
| 86 | String msg = "WARNING: Failed to resolve object id " |
| 87 | + Misc.toHex(id); |
| 88 | if (field != null) { |
| 89 | msg += " for field " + field.getName() |
| 90 | + " (signature " + field.getSignature() + ")"; |
| 91 | } |
| 92 | System.out.println(msg); |
| 93 | // Thread.dumpStack(); |
| 94 | } |
| 95 | result = new HackJavaValue("Unresolved object " |
| 96 | + Misc.toHex(id), 0); |
| 97 | } |
| 98 | return result; |
| 99 | } |
| 100 | |
| 101 | public int getSize() { |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | public String toString() { |
| 106 | return "Unresolved object " + Misc.toHex(id); |
| 107 | } |
| 108 | } |