1 /* |
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2 * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 |
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27 /* |
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28 * The Original Code is HAT. The Initial Developer of the |
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29 * Original Code is Bill Foote, with contributions from others |
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30 * at JavaSoft/Sun. |
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31 */ |
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32 |
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33 package com.sun.tools.hat.internal.server; |
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34 |
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35 import com.sun.tools.hat.internal.model.JavaClass; |
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36 import java.util.Arrays; |
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37 import java.util.Comparator; |
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38 |
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39 /** |
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40 * Prints histogram sortable by class name, count and size. |
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41 * |
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42 */ |
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43 public class HistogramQuery extends QueryHandler { |
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44 public void run() { |
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45 JavaClass[] classes = snapshot.getClassesArray(); |
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46 Comparator<JavaClass> comparator; |
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47 if (query.equals("count")) { |
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48 comparator = new Comparator<JavaClass>() { |
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49 public int compare(JavaClass first, JavaClass second) { |
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50 long diff = (second.getInstancesCount(false) - |
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51 first.getInstancesCount(false)); |
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52 return (diff == 0)? 0: ((diff < 0)? -1 : + 1); |
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53 } |
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54 }; |
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55 } else if (query.equals("class")) { |
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56 comparator = new Comparator<JavaClass>() { |
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57 public int compare(JavaClass first, JavaClass second) { |
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58 return first.getName().compareTo(second.getName()); |
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59 } |
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60 }; |
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61 } else { |
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62 // default sort is by total size |
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63 comparator = new Comparator<JavaClass>() { |
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64 public int compare(JavaClass first, JavaClass second) { |
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65 long diff = (second.getTotalInstanceSize() - |
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66 first.getTotalInstanceSize()); |
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67 return (diff == 0)? 0: ((diff < 0)? -1 : + 1); |
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68 } |
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69 }; |
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70 } |
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71 Arrays.sort(classes, comparator); |
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72 |
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73 startHtml("Heap Histogram"); |
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74 |
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75 out.println("<p align='center'>"); |
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76 out.println("<b><a href='/'>All Classes (excluding platform)</a></b>"); |
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77 out.println("</p>"); |
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78 |
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79 out.println("<table align=center border=1>"); |
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80 out.println("<tr><th><a href='/histo/class'>Class</a></th>"); |
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81 out.println("<th><a href='/histo/count'>Instance Count</a></th>"); |
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82 out.println("<th><a href='/histo/size'>Total Size</a></th></tr>"); |
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83 for (int i = 0; i < classes.length; i++) { |
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84 JavaClass clazz = classes[i]; |
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85 out.println("<tr><td>"); |
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86 printClass(clazz); |
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87 out.println("</td>"); |
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88 out.println("<td>"); |
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89 out.println(clazz.getInstancesCount(false)); |
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90 out.println("</td>"); |
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91 out.println("<td>"); |
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92 out.println(clazz.getTotalInstanceSize()); |
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93 out.println("</td></tr>"); |
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94 } |
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95 out.println("</table>"); |
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96 |
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97 endHtml(); |
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98 } |
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99 } |
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