| /* |
| * 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.JavaClass; |
| import java.util.Arrays; |
| import java.util.Comparator; |
| |
| /** |
| * Prints histogram sortable by class name, count and size. |
| * |
| */ |
| public class HistogramQuery extends QueryHandler { |
| public void run() { |
| JavaClass[] classes = snapshot.getClassesArray(); |
| Comparator<JavaClass> comparator; |
| if (query.equals("count")) { |
| comparator = new Comparator<JavaClass>() { |
| public int compare(JavaClass first, JavaClass second) { |
| long diff = (second.getInstancesCount(false) - |
| first.getInstancesCount(false)); |
| return (diff == 0)? 0: ((diff < 0)? -1 : + 1); |
| } |
| }; |
| } else if (query.equals("class")) { |
| comparator = new Comparator<JavaClass>() { |
| public int compare(JavaClass first, JavaClass second) { |
| return first.getName().compareTo(second.getName()); |
| } |
| }; |
| } else { |
| // default sort is by total size |
| comparator = new Comparator<JavaClass>() { |
| public int compare(JavaClass first, JavaClass second) { |
| long diff = (second.getTotalInstanceSize() - |
| first.getTotalInstanceSize()); |
| return (diff == 0)? 0: ((diff < 0)? -1 : + 1); |
| } |
| }; |
| } |
| Arrays.sort(classes, comparator); |
| |
| startHtml("Heap Histogram"); |
| |
| out.println("<p align='center'>"); |
| out.println("<b><a href='/'>All Classes (excluding platform)</a></b>"); |
| out.println("</p>"); |
| |
| out.println("<table align=center border=1>"); |
| out.println("<tr><th><a href='/histo/class'>Class</a></th>"); |
| out.println("<th><a href='/histo/count'>Instance Count</a></th>"); |
| out.println("<th><a href='/histo/size'>Total Size</a></th></tr>"); |
| for (int i = 0; i < classes.length; i++) { |
| JavaClass clazz = classes[i]; |
| out.println("<tr><td>"); |
| printClass(clazz); |
| out.println("</td>"); |
| out.println("<td>"); |
| out.println(clazz.getInstancesCount(false)); |
| out.println("</td>"); |
| out.println("<td>"); |
| out.println(clazz.getTotalInstanceSize()); |
| out.println("</td></tr>"); |
| } |
| out.println("</table>"); |
| |
| endHtml(); |
| } |
| } |