1 /*

     2  * Copyright (c) 1997, 2014, 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 com.sun.tools.hat.internal.util.ArraySorter;

    37 import com.sun.tools.hat.internal.util.Comparer;

    38 

    39 import java.util.Enumeration;

    40 

    41 /**

    42  *

    43  * @author      Bill Foote

    44  */

    45 

    46 

    47 class ClassQuery extends QueryHandler {

    48 

    49 

    50     public ClassQuery() {

    51     }

    52 

    53     public void run() {

    54         startHtml("Class " + query);

    55         JavaClass clazz = snapshot.findClass(query);

    56         if (clazz == null) {

    57             error("class not found: " + query);

    58         } else {

    59             printFullClass(clazz);

    60         }

    61         endHtml();

    62     }

    63 

    64     protected void printFullClass(JavaClass clazz) {

    65         out.print("<h1>");

    66         print(clazz.toString());

    67         out.println("</h1>");

    68 

    69         out.println("<h2>Superclass:</h2>");

    70         printClass(clazz.getSuperclass());

    71 

    72         out.println("<h2>Loader Details</h2>");

    73         out.println("<h3>ClassLoader:</h3>");

    74         printThing(clazz.getLoader());

    75 

    76         out.println("<h3>Signers:</h3>");

    77         printThing(clazz.getSigners());

    78 

    79         out.println("<h3>Protection Domain:</h3>");

    80         printThing(clazz.getProtectionDomain());

    81 

    82         out.println("<h2>Subclasses:</h2>");

    83         JavaClass[] sc = clazz.getSubclasses();

    84         for (int i = 0; i < sc.length; i++) {

    85             out.print("    ");

    86             printClass(sc[i]);

    87             out.println("<br>");

    88         }

    89 

    90         out.println("<h2>Instance Data Members:</h2>");

    91         JavaField[] ff = clazz.getFields().clone();

    92         ArraySorter.sort(ff, new Comparer() {

    93             public int compare(Object lhs, Object rhs) {

    94                 JavaField left = (JavaField) lhs;

    95                 JavaField right = (JavaField) rhs;

    96                 return left.getName().compareTo(right.getName());

    97             }

    98         });

    99         for (int i = 0; i < ff.length; i++) {

   100             out.print("    ");

   101             printField(ff[i]);

   102             out.println("<br>");

   103         }

   104 

   105         out.println("<h2>Static Data Members:</h2>");

   106         JavaStatic[] ss = clazz.getStatics();

   107         for (int i = 0; i < ss.length; i++) {

   108             printStatic(ss[i]);

   109             out.println("<br>");

   110         }

   111 

   112         out.println("<h2>Instances</h2>");

   113 

   114         printAnchorStart();

   115         print("instances/" + encodeForURL(clazz));

   116         out.print("\">");

   117         out.println("Exclude subclasses</a><br>");

   118 

   119         printAnchorStart();

   120         print("allInstances/" + encodeForURL(clazz));

   121         out.print("\">");

   122         out.println("Include subclasses</a><br>");

   123 

   124 

   125         if (snapshot.getHasNewSet()) {

   126             out.println("<h2>New Instances</h2>");

   127 

   128             printAnchorStart();

   129             print("newInstances/" + encodeForURL(clazz));

   130             out.print("\">");

   131             out.println("Exclude subclasses</a><br>");

   132 

   133             printAnchorStart();

   134             print("allNewInstances/" + encodeForURL(clazz));

   135             out.print("\">");

   136             out.println("Include subclasses</a><br>");

   137         }

   138 

   139         out.println("<h2>References summary by Type</h2>");

   140         printAnchorStart();

   141         print("refsByType/" + encodeForURL(clazz));

   142         out.print("\">");

   143         out.println("References summary by type</a>");

   144 

   145         printReferencesTo(clazz);

   146     }

   147 

   148     protected void printReferencesTo(JavaHeapObject obj) {

   149         if (obj.getId() == -1) {

   150             return;

   151         }

   152         out.println("<h2>References to this object:</h2>");

   153         out.flush();

   154         Enumeration<JavaThing> referers = obj.getReferers();

   155         while (referers.hasMoreElements()) {

   156             JavaHeapObject ref = (JavaHeapObject) referers.nextElement();

   157             printThing(ref);

   158             print (" : " + ref.describeReferenceTo(obj, snapshot));

   159             // If there are more than one references, this only gets the

   160             // first one.

   161             out.println("<br>");

   162         }

   163 

   164         out.println("<h2>Other Queries</h2>");

   165         out.println("Reference Chains from Rootset");

   166         long id = obj.getId();

   167 

   168         out.print("<ul><li>");

   169         printAnchorStart();

   170         out.print("roots/");

   171         printHex(id);

   172         out.print("\">");

   173         out.println("Exclude weak refs</a>");

   174 

   175         out.print("<li>");

   176         printAnchorStart();

   177         out.print("allRoots/");

   178         printHex(id);

   179         out.print("\">");

   180         out.println("Include weak refs</a></ul>");

   181 

   182         printAnchorStart();

   183         out.print("reachableFrom/");

   184         printHex(id);

   185         out.print("\">");

   186         out.println("Objects reachable from here</a><br>");

   187     }

   188 

   189 

   190 }