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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 | +/** | |
| 39 | + * References by type summary | |
| 40 | + * | |
| 41 | + */ | |
| 42 | +public class RefsByTypeQuery extends QueryHandler { | |
| 43 | + public void run() { | |
| 44 | + JavaClass clazz = snapshot.findClass(query); | |
| 45 | + if (clazz == null) { | |
| 46 | + error("class not found: " + query); | |
| 47 | + } else { | |
| 48 | + Map<JavaClass, Long> referrersStat = new HashMap<JavaClass, Long>(); | |
| 49 | + final Map<JavaClass, Long> refereesStat = new HashMap<JavaClass, Long>(); | |
| 50 | + Enumeration instances = clazz.getInstances(false); | |
| 51 | + while (instances.hasMoreElements()) { | |
| 52 | + JavaHeapObject instance = (JavaHeapObject) instances.nextElement(); | |
| 53 | + if (instance.getId() == -1) { | |
| 54 | + continue; | |
| 55 | + } | |
| 56 | + Enumeration e = instance.getReferers(); | |
| 57 | + while (e.hasMoreElements()) { | |
| 58 | + JavaHeapObject ref = (JavaHeapObject) e.nextElement(); | |
| 59 | + JavaClass cl = ref.getClazz(); | |
| 60 | + if (cl == null) { | |
| 61 | + System.out.println("null class for " + ref); | |
| 62 | + continue; | |
| 63 | + } | |
| 64 | + Long count = referrersStat.get(cl); | |
| 65 | + if (count == null) { | |
| 66 | + count = new Long(1); | |
| 67 | + } else { | |
| 68 | + count = new Long(count.longValue() + 1); | |
| 69 | + } | |
| 70 | + referrersStat.put(cl, count); | |
| 71 | + } | |
| 72 | + instance.visitReferencedObjects( | |
| 73 | + new AbstractJavaHeapObjectVisitor() { | |
| 74 | + public void visit(JavaHeapObject obj) { | |
| 75 | + JavaClass cl = obj.getClazz(); | |
| 76 | + Long count = refereesStat.get(cl); | |
| 77 | + if (count == null) { | |
| 78 | + count = new Long(1); | |
| 79 | + } else { | |
| 80 | + count = new Long(count.longValue() + 1); | |
| 81 | + } | |
| 82 | + refereesStat.put(cl, count); | |
| 83 | + } | |
| 84 | + } | |
| 85 | + ); | |
| 86 | + } // for each instance | |
| 87 | + | |
| 88 | + startHtml("References by Type"); | |
| 89 | + out.println("<p align='center'>"); | |
| 90 | + printClass(clazz); | |
| 91 | + if (clazz.getId() != -1) { | |
| 92 | + out.println("[" + clazz.getIdString() + "]"); | |
| 93 | + } | |
| 94 | + out.println("</p>"); | |
| 95 | + | |
| 96 | + if (referrersStat.size() != 0) { | |
| 97 | + out.println("<h3 align='center'>Referrers by Type</h3>"); | |
| 98 | + print(referrersStat); | |
| 99 | + } | |
| 100 | + | |
| 101 | + if (refereesStat.size() != 0) { | |
| 102 | + out.println("<h3 align='center'>Referees by Type</h3>"); | |
| 103 | + print(refereesStat); | |
| 104 | + } | |
| 105 | + | |
| 106 | + endHtml(); | |
| 107 | + } // clazz != null | |
| 108 | + } // run | |
| 109 | + | |
| 110 | + private void print(final Map<JavaClass, Long> map) { | |
| 111 | + out.println("<table border='1' align='center'>"); | |
| 112 | + Set<JavaClass> keys = map.keySet(); | |
| 113 | + JavaClass[] classes = new JavaClass[keys.size()]; | |
| 114 | + keys.toArray(classes); | |
| 115 | + Arrays.sort(classes, new Comparator<JavaClass>() { | |
| 116 | + public int compare(JavaClass first, JavaClass second) { | |
| 117 | + Long count1 = map.get(first); | |
| 118 | + Long count2 = map.get(second); | |
| 119 | + return count2.compareTo(count1); | |
| 120 | + } | |
| 121 | + }); | |
| 122 | + | |
| 123 | + out.println("<tr><th>Class</th><th>Count</th></tr>"); | |
| 124 | + for (int i = 0; i < classes.length; i++) { | |
| 125 | + JavaClass clazz = classes[i]; | |
| 126 | + out.println("<tr><td>"); | |
| 127 | + out.print("<a href='/refsByType/"); | |
| 128 | + out.print(clazz.getIdString()); | |
| 129 | + out.print("'>"); | |
| 130 | + out.print(clazz.getName()); | |
| 131 | + out.println("</a>"); | |
| 132 | + out.println("</td><td>"); | |
| 133 | + out.println(map.get(clazz)); | |
| 134 | + out.println("</td></tr>"); | |
| 135 | + } | |
| 136 | + out.println("</table>"); | |
| 137 | + } | |
| 138 | +} | |