100 lines
3.8 KiB
Java
100 lines
3.8 KiB
Java
/*
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* Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* The Original Code is HAT. The Initial Developer of the
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* Original Code is Bill Foote, with contributions from others
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* at JavaSoft/Sun.
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*/
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package com.sun.tools.hat.internal.server;
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import com.sun.tools.hat.internal.model.JavaClass;
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import java.util.Arrays;
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import java.util.Comparator;
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/**
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* Prints histogram sortable by class name, count and size.
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*
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*/
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public class HistogramQuery extends QueryHandler {
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public void run() {
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JavaClass[] classes = snapshot.getClassesArray();
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Comparator<JavaClass> comparator;
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if (query.equals("count")) {
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comparator = new Comparator<JavaClass>() {
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public int compare(JavaClass first, JavaClass second) {
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long diff = (second.getInstancesCount(false) -
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first.getInstancesCount(false));
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return (diff == 0)? 0: ((diff < 0)? -1 : + 1);
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}
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};
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} else if (query.equals("class")) {
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comparator = new Comparator<JavaClass>() {
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public int compare(JavaClass first, JavaClass second) {
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return first.getName().compareTo(second.getName());
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}
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};
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} else {
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// default sort is by total size
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comparator = new Comparator<JavaClass>() {
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public int compare(JavaClass first, JavaClass second) {
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long diff = (second.getTotalInstanceSize() -
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first.getTotalInstanceSize());
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return (diff == 0)? 0: ((diff < 0)? -1 : + 1);
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}
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};
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}
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Arrays.sort(classes, comparator);
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startHtml("Heap Histogram");
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out.println("<p align='center'>");
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out.println("<b><a href='/'>All Classes (excluding platform)</a></b>");
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out.println("</p>");
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out.println("<table align=center border=1>");
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out.println("<tr><th><a href='/histo/class'>Class</a></th>");
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out.println("<th><a href='/histo/count'>Instance Count</a></th>");
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out.println("<th><a href='/histo/size'>Total Size</a></th></tr>");
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for (int i = 0; i < classes.length; i++) {
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JavaClass clazz = classes[i];
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out.println("<tr><td>");
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printClass(clazz);
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out.println("</td>");
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out.println("<td>");
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out.println(clazz.getInstancesCount(false));
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out.println("</td>");
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out.println("<td>");
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out.println(clazz.getTotalInstanceSize());
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out.println("</td></tr>");
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}
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out.println("</table>");
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endHtml();
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}
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}
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