J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2005 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | /* |
| 28 | * The contents of this file are subject to the Sun Public License |
| 29 | * Version 1.0 (the "License"); you may not use this file except in |
| 30 | * compliance with the License. A copy of the License is available at |
| 31 | * http://www.sun.com/, and in the file LICENSE.html in the |
| 32 | * doc directory. |
| 33 | * |
| 34 | * The Original Code is HAT. The Initial Developer of the |
| 35 | * Original Code is Bill Foote, with contributions from others |
| 36 | * at JavaSoft/Sun. Portions created by Bill Foote and others |
| 37 | * at Javasoft/Sun are Copyright (C) 1997-2004. All Rights Reserved. |
| 38 | * |
| 39 | * In addition to the formal license, I ask that you don't |
| 40 | * change the history or donations files without permission. |
| 41 | * |
| 42 | */ |
| 43 | |
| 44 | package com.sun.tools.hat.internal.server; |
| 45 | |
| 46 | import com.sun.tools.hat.internal.model.*; |
| 47 | import java.util.*; |
| 48 | |
| 49 | public class FinalizerSummaryQuery extends QueryHandler { |
| 50 | public void run() { |
| 51 | Enumeration objs = snapshot.getFinalizerObjects(); |
| 52 | startHtml("Finalizer Summary"); |
| 53 | |
| 54 | out.println("<p align='center'>"); |
| 55 | out.println("<b><a href='/'>All Classes (excluding platform)</a></b>"); |
| 56 | out.println("</p>"); |
| 57 | |
| 58 | printFinalizerSummary(objs); |
| 59 | endHtml(); |
| 60 | } |
| 61 | |
| 62 | private static class HistogramElement { |
| 63 | public HistogramElement(JavaClass clazz) { |
| 64 | this.clazz = clazz; |
| 65 | } |
| 66 | |
| 67 | public void updateCount() { |
| 68 | this.count++; |
| 69 | } |
| 70 | |
| 71 | public int compare(HistogramElement other) { |
| 72 | long diff = other.count - count; |
| 73 | return (diff == 0L)? 0 : ((diff > 0L)? +1 : -1); |
| 74 | } |
| 75 | |
| 76 | public JavaClass getClazz() { |
| 77 | return clazz; |
| 78 | } |
| 79 | |
| 80 | public long getCount() { |
| 81 | return count; |
| 82 | } |
| 83 | |
| 84 | private JavaClass clazz; |
| 85 | private long count; |
| 86 | } |
| 87 | |
| 88 | private void printFinalizerSummary(Enumeration objs) { |
| 89 | int count = 0; |
| 90 | Map<JavaClass, HistogramElement> map = new HashMap<JavaClass, HistogramElement>(); |
| 91 | |
| 92 | while (objs.hasMoreElements()) { |
| 93 | JavaHeapObject obj = (JavaHeapObject) objs.nextElement(); |
| 94 | count++; |
| 95 | JavaClass clazz = obj.getClazz(); |
| 96 | if (! map.containsKey(clazz)) { |
| 97 | map.put(clazz, new HistogramElement(clazz)); |
| 98 | } |
| 99 | HistogramElement element = map.get(clazz); |
| 100 | element.updateCount(); |
| 101 | } |
| 102 | |
| 103 | out.println("<p align='center'>"); |
| 104 | out.println("<b>"); |
| 105 | out.println("Total "); |
| 106 | if (count != 0) { |
| 107 | out.print("<a href='/finalizerObjects/'>instances</a>"); |
| 108 | } else { |
| 109 | out.print("instances"); |
| 110 | } |
| 111 | out.println(" pending finalization: "); |
| 112 | out.print(count); |
| 113 | out.println("</b></p><hr>"); |
| 114 | |
| 115 | if (count == 0) { |
| 116 | return; |
| 117 | } |
| 118 | |
| 119 | // calculate and print histogram |
| 120 | HistogramElement[] elements = new HistogramElement[map.size()]; |
| 121 | map.values().toArray(elements); |
| 122 | Arrays.sort(elements, new Comparator<HistogramElement>() { |
| 123 | public int compare(HistogramElement o1, HistogramElement o2) { |
| 124 | return o1.compare(o2); |
| 125 | } |
| 126 | }); |
| 127 | |
| 128 | out.println("<table border=1 align=center>"); |
| 129 | out.println("<tr><th>Count</th><th>Class</th></tr>"); |
| 130 | for (int j = 0; j < elements.length; j++) { |
| 131 | out.println("<tr><td>"); |
| 132 | out.println(elements[j].getCount()); |
| 133 | out.println("</td><td>"); |
| 134 | printClass(elements[j].getClazz()); |
| 135 | out.println("</td><tr>"); |
| 136 | } |
| 137 | out.println("</table>"); |
| 138 | } |
| 139 | } |