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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.server; | |
| 34 | + | |
| 35 | +import com.sun.tools.hat.internal.model.*; | |
| 36 | +import java.util.*; | |
| 37 | + | |
| 38 | +public class FinalizerSummaryQuery extends QueryHandler { | |
| 39 | + public void run() { | |
| 40 | + Enumeration objs = snapshot.getFinalizerObjects(); | |
| 41 | + startHtml("Finalizer Summary"); | |
| 42 | + | |
| 43 | + out.println("<p align='center'>"); | |
| 44 | + out.println("<b><a href='/'>All Classes (excluding platform)</a></b>"); | |
| 45 | + out.println("</p>"); | |
| 46 | + | |
| 47 | + printFinalizerSummary(objs); | |
| 48 | + endHtml(); | |
| 49 | + } | |
| 50 | + | |
| 51 | + private static class HistogramElement { | |
| 52 | + public HistogramElement(JavaClass clazz) { | |
| 53 | + this.clazz = clazz; | |
| 54 | + } | |
| 55 | + | |
| 56 | + public void updateCount() { | |
| 57 | + this.count++; | |
| 58 | + } | |
| 59 | + | |
| 60 | + public int compare(HistogramElement other) { | |
| 61 | + long diff = other.count - count; | |
| 62 | + return (diff == 0L)? 0 : ((diff > 0L)? +1 : -1); | |
| 63 | + } | |
| 64 | + | |
| 65 | + public JavaClass getClazz() { | |
| 66 | + return clazz; | |
| 67 | + } | |
| 68 | + | |
| 69 | + public long getCount() { | |
| 70 | + return count; | |
| 71 | + } | |
| 72 | + | |
| 73 | + private JavaClass clazz; | |
| 74 | + private long count; | |
| 75 | + } | |
| 76 | + | |
| 77 | + private void printFinalizerSummary(Enumeration objs) { | |
| 78 | + int count = 0; | |
| 79 | + Map<JavaClass, HistogramElement> map = new HashMap<JavaClass, HistogramElement>(); | |
| 80 | + | |
| 81 | + while (objs.hasMoreElements()) { | |
| 82 | + JavaHeapObject obj = (JavaHeapObject) objs.nextElement(); | |
| 83 | + count++; | |
| 84 | + JavaClass clazz = obj.getClazz(); | |
| 85 | + if (! map.containsKey(clazz)) { | |
| 86 | + map.put(clazz, new HistogramElement(clazz)); | |
| 87 | + } | |
| 88 | + HistogramElement element = map.get(clazz); | |
| 89 | + element.updateCount(); | |
| 90 | + } | |
| 91 | + | |
| 92 | + out.println("<p align='center'>"); | |
| 93 | + out.println("<b>"); | |
| 94 | + out.println("Total "); | |
| 95 | + if (count != 0) { | |
| 96 | + out.print("<a href='/finalizerObjects/'>instances</a>"); | |
| 97 | + } else { | |
| 98 | + out.print("instances"); | |
| 99 | + } | |
| 100 | + out.println(" pending finalization: "); | |
| 101 | + out.print(count); | |
| 102 | + out.println("</b></p><hr>"); | |
| 103 | + | |
| 104 | + if (count == 0) { | |
| 105 | + return; | |
| 106 | + } | |
| 107 | + | |
| 108 | + // calculate and print histogram | |
| 109 | + HistogramElement[] elements = new HistogramElement[map.size()]; | |
| 110 | + map.values().toArray(elements); | |
| 111 | + Arrays.sort(elements, new Comparator<HistogramElement>() { | |
| 112 | + public int compare(HistogramElement o1, HistogramElement o2) { | |
| 113 | + return o1.compare(o2); | |
| 114 | + } | |
| 115 | + }); | |
| 116 | + | |
| 117 | + out.println("<table border=1 align=center>"); | |
| 118 | + out.println("<tr><th>Count</th><th>Class</th></tr>"); | |
| 119 | + for (int j = 0; j < elements.length; j++) { | |
| 120 | + out.println("<tr><td>"); | |
| 121 | + out.println(elements[j].getCount()); | |
| 122 | + out.println("</td><td>"); | |
| 123 | + printClass(elements[j].getClazz()); | |
| 124 | + out.println("</td><tr>"); | |
| 125 | + } | |
| 126 | + out.println("</table>"); | |
| 127 | + } | |
| 128 | +} | |