--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/com/sun/tools/hat/internal/server/HistogramQuery.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+
+/*
+ * The contents of this file are subject to the Sun Public License
+ * Version 1.0 (the "License"); you may not use this file except in
+ * compliance with the License. A copy of the License is available at
+ * http://www.sun.com/, and in the file LICENSE.html in the
+ * doc directory.
+ *
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun. Portions created by Bill Foote and others
+ * at Javasoft/Sun are Copyright (C) 1997-2004. All Rights Reserved.
+ *
+ * In addition to the formal license, I ask that you don't
+ * change the history or donations files without permission.
+ *
+ */
+
+package com.sun.tools.hat.internal.server;
+
+import com.sun.tools.hat.internal.model.JavaClass;
+import java.util.Arrays;
+import java.util.Comparator;
+
+/**
+ * Prints histogram sortable by class name, count and size.
+ *
+ */
+public class HistogramQuery extends QueryHandler {
+    public void run() {
+        JavaClass[] classes = snapshot.getClassesArray();
+        Comparator<JavaClass> comparator;
+        if (query.equals("count")) {
+            comparator = new Comparator<JavaClass>() {
+                public int compare(JavaClass first, JavaClass second) {
+                    long diff = (second.getInstancesCount(false) -
+                             first.getInstancesCount(false));
+                    return (diff == 0)? 0: ((diff < 0)? -1 : + 1);
+                }
+            };
+        } else if (query.equals("class")) {
+            comparator = new Comparator<JavaClass>() {
+                public int compare(JavaClass first, JavaClass second) {
+                    return first.getName().compareTo(second.getName());
+                }
+            };
+        } else {
+            // default sort is by total size
+            comparator = new Comparator<JavaClass>() {
+                public int compare(JavaClass first, JavaClass second) {
+                    long diff = (second.getTotalInstanceSize() -
+                             first.getTotalInstanceSize());
+                    return (diff == 0)? 0: ((diff < 0)? -1 : + 1);
+                }
+            };
+        }
+        Arrays.sort(classes, comparator);
+
+        startHtml("Heap Histogram");
+
+        out.println("<p align='center'>");
+        out.println("<b><a href='/'>All Classes (excluding platform)</a></b>");
+        out.println("</p>");
+
+        out.println("<table align=center border=1>");
+        out.println("<tr><th><a href='/histo/class'>Class</a></th>");
+        out.println("<th><a href='/histo/count'>Instance Count</a></th>");
+        out.println("<th><a href='/histo/size'>Total Size</a></th></tr>");
+        for (int i = 0; i < classes.length; i++) {
+            JavaClass clazz = classes[i];
+            out.println("<tr><td>");
+            printClass(clazz);
+            out.println("</td>");
+            out.println("<td>");
+            out.println(clazz.getInstancesCount(false));
+            out.println("</td>");
+            out.println("<td>");
+            out.println(clazz.getTotalInstanceSize());
+            out.println("</td></tr>");
+        }
+        out.println("</table>");
+
+        endHtml();
+    }
+}