/* * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * The Original Code is HAT. The Initial Developer of the * Original Code is Bill Foote, with contributions from others * at JavaSoft/Sun. */ package com.sun.tools.hat.internal.server; import java.util.Enumeration; import com.sun.tools.hat.internal.model.*; import com.sun.tools.hat.internal.util.ArraySorter; import com.sun.tools.hat.internal.util.Comparer; /** * * @author Bill Foote */ class ObjectQuery extends ClassQuery { // We inherit printFullClass from ClassQuery public ObjectQuery() { } public void run() { startHtml("Object at " + query); long id = parseHex(query); JavaHeapObject thing = snapshot.findThing(id); // // In the following, I suppose we really should use a visitor // pattern. I'm not that strongly motivated to do this, however: // This is the only typecase there is, and the default for an // unrecognized type is to do something reasonable. // if (thing == null) { error("object not found"); } else if (thing instanceof JavaClass) { printFullClass((JavaClass) thing); } else if (thing instanceof JavaValueArray) { print(((JavaValueArray) thing).valueString(true)); printAllocationSite(thing); printReferencesTo(thing); } else if (thing instanceof JavaObjectArray) { printFullObjectArray((JavaObjectArray) thing); printAllocationSite(thing); printReferencesTo(thing); } else if (thing instanceof JavaObject) { printFullObject((JavaObject) thing); printAllocationSite(thing); printReferencesTo(thing); } else { // We should never get here print(thing.toString()); printReferencesTo(thing); } endHtml(); } private void printFullObject(JavaObject obj) { out.print("

instance of "); print(obj.toString()); out.print(" (" + obj.getSize() + " bytes)"); out.println("

\n"); out.println("

Class:

"); printClass(obj.getClazz()); out.println("

Instance data members:

"); final JavaThing[] things = obj.getFields(); final JavaField[] fields = obj.getClazz().getFieldsForInstance(); Integer[] hack = new Integer[things.length]; for (int i = 0; i < things.length; i++) { hack[i] = new Integer(i); } ArraySorter.sort(hack, new Comparer() { public int compare(Object lhs, Object rhs) { JavaField left = fields[((Integer) lhs).intValue()]; JavaField right = fields[((Integer) rhs).intValue()]; return left.getName().compareTo(right.getName()); } }); for (int i = 0; i < things.length; i++) { int index = hack[i].intValue(); printField(fields[index]); out.print(" : "); printThing(things[index]); out.println("
"); } } private void printFullObjectArray(JavaObjectArray arr) { JavaThing[] elements = arr.getElements(); out.println("

Array of " + elements.length + " objects

"); out.println("

Class:

"); printClass(arr.getClazz()); out.println("

Values

"); for (int i = 0; i < elements.length; i++) { out.print("" + i + " : "); printThing(elements[i]); out.println("
"); } } // // Print the StackTrace where this was allocated // private void printAllocationSite(JavaHeapObject obj) { StackTrace trace = obj.getAllocatedFrom(); if (trace == null || trace.getFrames().length == 0) { return; } out.println("

Object allocated from:

"); printStackTrace(trace); } }