147 lines
5.0 KiB
Java
147 lines
5.0 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.server;
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import java.util.Enumeration;
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import com.sun.tools.hat.internal.model.*;
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import com.sun.tools.hat.internal.util.ArraySorter;
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import com.sun.tools.hat.internal.util.Comparer;
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/**
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*
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* @author Bill Foote
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*/
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class ObjectQuery extends ClassQuery {
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// We inherit printFullClass from ClassQuery
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public ObjectQuery() {
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}
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public void run() {
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startHtml("Object at " + query);
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long id = parseHex(query);
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JavaHeapObject thing = snapshot.findThing(id);
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//
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// In the following, I suppose we really should use a visitor
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// pattern. I'm not that strongly motivated to do this, however:
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// This is the only typecase there is, and the default for an
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// unrecognized type is to do something reasonable.
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//
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if (thing == null) {
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error("object not found");
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} else if (thing instanceof JavaClass) {
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printFullClass((JavaClass) thing);
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} else if (thing instanceof JavaValueArray) {
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print(((JavaValueArray) thing).valueString(true));
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printAllocationSite(thing);
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printReferencesTo(thing);
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} else if (thing instanceof JavaObjectArray) {
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printFullObjectArray((JavaObjectArray) thing);
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printAllocationSite(thing);
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printReferencesTo(thing);
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} else if (thing instanceof JavaObject) {
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printFullObject((JavaObject) thing);
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printAllocationSite(thing);
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printReferencesTo(thing);
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} else {
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// We should never get here
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print(thing.toString());
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printReferencesTo(thing);
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}
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endHtml();
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}
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private void printFullObject(JavaObject obj) {
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out.print("<h1>instance of ");
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print(obj.toString());
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out.print(" <small>(" + obj.getSize() + " bytes)</small>");
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out.println("</h1>\n");
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out.println("<h2>Class:</h2>");
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printClass(obj.getClazz());
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out.println("<h2>Instance data members:</h2>");
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final JavaThing[] things = obj.getFields();
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final JavaField[] fields = obj.getClazz().getFieldsForInstance();
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Integer[] hack = new Integer[things.length];
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for (int i = 0; i < things.length; i++) {
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hack[i] = new Integer(i);
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}
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ArraySorter.sort(hack, new Comparer() {
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public int compare(Object lhs, Object rhs) {
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JavaField left = fields[((Integer) lhs).intValue()];
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JavaField right = fields[((Integer) rhs).intValue()];
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return left.getName().compareTo(right.getName());
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}
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});
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for (int i = 0; i < things.length; i++) {
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int index = hack[i].intValue();
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printField(fields[index]);
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out.print(" : ");
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printThing(things[index]);
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out.println("<br>");
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}
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}
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private void printFullObjectArray(JavaObjectArray arr) {
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JavaThing[] elements = arr.getElements();
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out.println("<h1>Array of " + elements.length + " objects</h1>");
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out.println("<h2>Class:</h2>");
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printClass(arr.getClazz());
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out.println("<h2>Values</h2>");
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for (int i = 0; i < elements.length; i++) {
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out.print("" + i + " : ");
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printThing(elements[i]);
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out.println("<br>");
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}
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}
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//
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// Print the StackTrace where this was allocated
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//
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private void printAllocationSite(JavaHeapObject obj) {
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StackTrace trace = obj.getAllocatedFrom();
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if (trace == null || trace.getFrames().length == 0) {
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return;
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}
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out.println("<h2>Object allocated from:</h2>");
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printStackTrace(trace);
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}
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}
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