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.Enumeration;
  37 
  38 /**
  39  *
  40  * @author      Bill Foote
  41  */
  42 
  43 
  44 class InstancesQuery extends QueryHandler {
  45 
  46     private boolean includeSubclasses;
  47     private boolean newObjects;
  48 
  49     public InstancesQuery(boolean includeSubclasses) {
  50         this.includeSubclasses = includeSubclasses;
  51     }
  52 
  53     public InstancesQuery(boolean includeSubclasses, boolean newObjects) {
  54         this.includeSubclasses = includeSubclasses;
  55         this.newObjects = newObjects;
  56     }
  57 
  58     public void run() {
  59         JavaClass clazz = snapshot.findClass(query);
  60         String instancesOf;
  61         if (newObjects)
  62             instancesOf = "New instances of ";
  63         else
  64             instancesOf = "Instances of ";
  65         if (includeSubclasses) {
  66             startHtml(instancesOf + query + " (including subclasses)");
  67         } else {
  68             startHtml(instancesOf + query);
  69         }
  70         if (clazz == null) {
  71             error("Class not found");
  72         } else {
  73             out.print("<strong>");
  74             printClass(clazz);
  75             out.print("</strong><br><br>");
  76             Enumeration<JavaHeapObject> objects = clazz.getInstances(includeSubclasses);
  77             long totalSize = 0;
  78             long instances = 0;
  79             while (objects.hasMoreElements()) {
  80                 JavaHeapObject obj = objects.nextElement();
  81                 if (newObjects && !obj.isNew())
  82                     continue;
  83                 printThing(obj);
  84                 out.println("<br>");
  85                 totalSize += obj.getSize();
  86                 instances++;
  87             }
  88             out.println("<h2>Total of " + instances + " instances occupying " + totalSize + " bytes.</h2>");
  89         }
  90         endHtml();
  91     }
  92 }