98 lines
3.2 KiB
Java
98 lines
3.2 KiB
Java
/*
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* Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* The Original Code is HAT. The Initial Developer of the
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* Original Code is Bill Foote, with contributions from others
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* at JavaSoft/Sun.
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*/
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package com.sun.tools.hat.internal.model;
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import com.sun.tools.hat.internal.util.Misc;
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/**
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* A forward reference to an object. This is an intermediate representation
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* for a JavaThing, when we have the thing's ID, but we might not have read
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* the thing yet.
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*
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* @author Bill Foote
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*/
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public class JavaObjectRef extends JavaThing {
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private long id;
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public JavaObjectRef(long id) {
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this.id = id;
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}
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public long getId() {
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return id;
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}
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public boolean isHeapAllocated() {
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return true;
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}
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public JavaThing dereference(Snapshot snapshot, JavaField field) {
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return dereference(snapshot, field, true);
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}
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public JavaThing dereference(Snapshot snapshot, JavaField field, boolean verbose) {
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if (field != null && !field.hasId()) {
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// If this happens, we must be a field that represents an int.
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// (This only happens with .bod-style files)
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return new JavaLong(id);
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}
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if (id == 0) {
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return snapshot.getNullThing();
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}
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JavaThing result = snapshot.findThing(id);
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if (result == null) {
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if (!snapshot.getUnresolvedObjectsOK() && verbose) {
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String msg = "WARNING: Failed to resolve object id "
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+ Misc.toHex(id);
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if (field != null) {
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msg += " for field " + field.getName()
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+ " (signature " + field.getSignature() + ")";
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}
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System.out.println(msg);
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// Thread.dumpStack();
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}
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result = new HackJavaValue("Unresolved object "
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+ Misc.toHex(id), 0);
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}
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return result;
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}
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public int getSize() {
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return 0;
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}
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public String toString() {
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return "Unresolved object " + Misc.toHex(id);
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}
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}
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