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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, 2008, 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. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | + | |
| 27 | +/* | |
| 28 | + * The Original Code is HAT. The Initial Developer of the | |
| 29 | + * Original Code is Bill Foote, with contributions from others | |
| 30 | + * at JavaSoft/Sun. | |
| 31 | + */ | |
| 32 | + | |
| 33 | +package com.sun.tools.hat.internal.model; | |
| 34 | + | |
| 35 | +import com.sun.tools.hat.internal.util.Misc; | |
| 36 | + | |
| 37 | +/** | |
| 38 | + * A forward reference to an object. This is an intermediate representation | |
| 39 | + * for a JavaThing, when we have the thing's ID, but we might not have read | |
| 40 | + * the thing yet. | |
| 41 | + * | |
| 42 | + * @author Bill Foote | |
| 43 | + */ | |
| 44 | +public class JavaObjectRef extends JavaThing { | |
| 45 | + private long id; | |
| 46 | + | |
| 47 | + public JavaObjectRef(long id) { | |
| 48 | + this.id = id; | |
| 49 | + } | |
| 50 | + | |
| 51 | + public long getId() { | |
| 52 | + return id; | |
| 53 | + } | |
| 54 | + | |
| 55 | + public boolean isHeapAllocated() { | |
| 56 | + return true; | |
| 57 | + } | |
| 58 | + | |
| 59 | + public JavaThing dereference(Snapshot snapshot, JavaField field) { | |
| 60 | + return dereference(snapshot, field, true); | |
| 61 | + } | |
| 62 | + | |
| 63 | + public JavaThing dereference(Snapshot snapshot, JavaField field, boolean verbose) { | |
| 64 | + if (field != null && !field.hasId()) { | |
| 65 | + // If this happens, we must be a field that represents an int. | |
| 66 | + // (This only happens with .bod-style files) | |
| 67 | + return new JavaLong(id); | |
| 68 | + } | |
| 69 | + if (id == 0) { | |
| 70 | + return snapshot.getNullThing(); | |
| 71 | + } | |
| 72 | + JavaThing result = snapshot.findThing(id); | |
| 73 | + if (result == null) { | |
| 74 | + if (!snapshot.getUnresolvedObjectsOK() && verbose) { | |
| 75 | + String msg = "WARNING: Failed to resolve object id " | |
| 76 | + + Misc.toHex(id); | |
| 77 | + if (field != null) { | |
| 78 | + msg += " for field " + field.getName() | |
| 79 | + + " (signature " + field.getSignature() + ")"; | |
| 80 | + } | |
| 81 | + System.out.println(msg); | |
| 82 | + // Thread.dumpStack(); | |
| 83 | + } | |
| 84 | + result = new HackJavaValue("Unresolved object " | |
| 85 | + + Misc.toHex(id), 0); | |
| 86 | + } | |
| 87 | + return result; | |
| 88 | + } | |
| 89 | + | |
| 90 | + public int getSize() { | |
| 91 | + return 0; | |
| 92 | + } | |
| 93 | + | |
| 94 | + public String toString() { | |
| 95 | + return "Unresolved object " + Misc.toHex(id); | |
| 96 | + } | |
| 97 | +} | |