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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 | } | ||