| /* |
| * 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 com.sun.tools.hat.internal.model.*; |
| import java.util.*; |
| |
| public class FinalizerSummaryQuery extends QueryHandler { |
| public void run() { |
| Enumeration objs = snapshot.getFinalizerObjects(); |
| startHtml("Finalizer Summary"); |
| |
| out.println("<p align='center'>"); |
| out.println("<b><a href='/'>All Classes (excluding platform)</a></b>"); |
| out.println("</p>"); |
| |
| printFinalizerSummary(objs); |
| endHtml(); |
| } |
| |
| private static class HistogramElement { |
| public HistogramElement(JavaClass clazz) { |
| this.clazz = clazz; |
| } |
| |
| public void updateCount() { |
| this.count++; |
| } |
| |
| public int compare(HistogramElement other) { |
| long diff = other.count - count; |
| return (diff == 0L)? 0 : ((diff > 0L)? +1 : -1); |
| } |
| |
| public JavaClass getClazz() { |
| return clazz; |
| } |
| |
| public long getCount() { |
| return count; |
| } |
| |
| private JavaClass clazz; |
| private long count; |
| } |
| |
| private void printFinalizerSummary(Enumeration objs) { |
| int count = 0; |
| Map<JavaClass, HistogramElement> map = new HashMap<JavaClass, HistogramElement>(); |
| |
| while (objs.hasMoreElements()) { |
| JavaHeapObject obj = (JavaHeapObject) objs.nextElement(); |
| count++; |
| JavaClass clazz = obj.getClazz(); |
| if (! map.containsKey(clazz)) { |
| map.put(clazz, new HistogramElement(clazz)); |
| } |
| HistogramElement element = map.get(clazz); |
| element.updateCount(); |
| } |
| |
| out.println("<p align='center'>"); |
| out.println("<b>"); |
| out.println("Total "); |
| if (count != 0) { |
| out.print("<a href='/finalizerObjects/'>instances</a>"); |
| } else { |
| out.print("instances"); |
| } |
| out.println(" pending finalization: "); |
| out.print(count); |
| out.println("</b></p><hr>"); |
| |
| if (count == 0) { |
| return; |
| } |
| |
| // calculate and print histogram |
| HistogramElement[] elements = new HistogramElement[map.size()]; |
| map.values().toArray(elements); |
| Arrays.sort(elements, new Comparator<HistogramElement>() { |
| public int compare(HistogramElement o1, HistogramElement o2) { |
| return o1.compare(o2); |
| } |
| }); |
| |
| out.println("<table border=1 align=center>"); |
| out.println("<tr><th>Count</th><th>Class</th></tr>"); |
| for (int j = 0; j < elements.length; j++) { |
| out.println("<tr><td>"); |
| out.println(elements[j].getCount()); |
| out.println("</td><td>"); |
| printClass(elements[j].getClazz()); |
| out.println("</td><tr>"); |
| } |
| out.println("</table>"); |
| } |
| } |