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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.JavaClass; | |
| 36 | +import java.util.Arrays; | |
| 37 | +import java.util.Comparator; | |
| 38 | + | |
| 39 | +/** | |
| 40 | + * Prints histogram sortable by class name, count and size. | |
| 41 | + * | |
| 42 | + */ | |
| 43 | +public class HistogramQuery extends QueryHandler { | |
| 44 | + public void run() { | |
| 45 | + JavaClass[] classes = snapshot.getClassesArray(); | |
| 46 | + Comparator<JavaClass> comparator; | |
| 47 | + if (query.equals("count")) { | |
| 48 | + comparator = new Comparator<JavaClass>() { | |
| 49 | + public int compare(JavaClass first, JavaClass second) { | |
| 50 | + long diff = (second.getInstancesCount(false) - | |
| 51 | + first.getInstancesCount(false)); | |
| 52 | + return (diff == 0)? 0: ((diff < 0)? -1 : + 1); | |
| 53 | + } | |
| 54 | + }; | |
| 55 | + } else if (query.equals("class")) { | |
| 56 | + comparator = new Comparator<JavaClass>() { | |
| 57 | + public int compare(JavaClass first, JavaClass second) { | |
| 58 | + return first.getName().compareTo(second.getName()); | |
| 59 | + } | |
| 60 | + }; | |
| 61 | + } else { | |
| 62 | + // default sort is by total size | |
| 63 | + comparator = new Comparator<JavaClass>() { | |
| 64 | + public int compare(JavaClass first, JavaClass second) { | |
| 65 | + long diff = (second.getTotalInstanceSize() - | |
| 66 | + first.getTotalInstanceSize()); | |
| 67 | + return (diff == 0)? 0: ((diff < 0)? -1 : + 1); | |
| 68 | + } | |
| 69 | + }; | |
| 70 | + } | |
| 71 | + Arrays.sort(classes, comparator); | |
| 72 | + | |
| 73 | + startHtml("Heap Histogram"); | |
| 74 | + | |
| 75 | + out.println("<p align='center'>"); | |
| 76 | + out.println("<b><a href='/'>All Classes (excluding platform)</a></b>"); | |
| 77 | + out.println("</p>"); | |
| 78 | + | |
| 79 | + out.println("<table align=center border=1>"); | |
| 80 | + out.println("<tr><th><a href='/histo/class'>Class</a></th>"); | |
| 81 | + out.println("<th><a href='/histo/count'>Instance Count</a></th>"); | |
| 82 | + out.println("<th><a href='/histo/size'>Total Size</a></th></tr>"); | |
| 83 | + for (int i = 0; i < classes.length; i++) { | |
| 84 | + JavaClass clazz = classes[i]; | |
| 85 | + out.println("<tr><td>"); | |
| 86 | + printClass(clazz); | |
| 87 | + out.println("</td>"); | |
| 88 | + out.println("<td>"); | |
| 89 | + out.println(clazz.getInstancesCount(false)); | |
| 90 | + out.println("</td>"); | |
| 91 | + out.println("<td>"); | |
| 92 | + out.println(clazz.getTotalInstanceSize()); | |
| 93 | + out.println("</td></tr>"); | |
| 94 | + } | |
| 95 | + out.println("</table>"); | |
| 96 | + | |
| 97 | + endHtml(); | |
| 98 | + } | |
| 99 | +} | |