/*

 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * The Original Code is HAT. The Initial Developer of the

 * Original Code is Bill Foote, with contributions from others

 * at JavaSoft/Sun.

 */

package com.sun.tools.hat.internal.server;

import com.sun.tools.hat.internal.model.*;

import com.sun.tools.hat.internal.util.ArraySorter;

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

import java.util.Enumeration;

/**

 *

 * @author      Bill Foote

 */

class InstancesCountQuery extends QueryHandler {

    private boolean excludePlatform;

    public InstancesCountQuery(boolean excludePlatform) {

        this.excludePlatform = excludePlatform;

    }

    public void run() {

        if (excludePlatform) {

            startHtml("Instance Counts for All Classes (excluding platform)");

        } else {

            startHtml("Instance Counts for All Classes (including platform)");

        }

        JavaClass[] classes = snapshot.getClassesArray();

        if (excludePlatform) {

            int num = 0;

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

                if (! PlatformClasses.isPlatformClass(classes[i])) {

                    classes[num++] = classes[i];

                }

            }

            JavaClass[] tmp = new JavaClass[num];

            System.arraycopy(classes, 0, tmp, 0, tmp.length);

            classes = tmp;

        }

        ArraySorter.sort(classes, new Comparer() {

            public int compare(Object lhso, Object rhso) {

                JavaClass lhs = (JavaClass) lhso;

                JavaClass rhs = (JavaClass) rhso;

                int diff = lhs.getInstancesCount(false)

                                - rhs.getInstancesCount(false);

                if (diff != 0) {

                    return -diff;       // Sort from biggest to smallest

                }

                String left = lhs.getName();

                String right = rhs.getName();

                if (left.startsWith("[") != right.startsWith("[")) {

                    // Arrays at the end

                    if (left.startsWith("[")) {

                        return 1;

                    } else {

                        return -1;

                    }

                }

                return left.compareTo(right);

            }

        });

        String lastPackage = null;

        long totalSize = 0;

        long instances = 0;

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

            JavaClass clazz = classes[i];

            int count = clazz.getInstancesCount(false);

            print("" + count);

            printAnchorStart();

            print("instances/" + encodeForURL(classes[i]));

            out.print("\"> ");

            if (count == 1) {

                print("instance");

            } else {

                print("instances");

            }

            out.print("</a> ");

            if (snapshot.getHasNewSet()) {

                Enumeration objects = clazz.getInstances(false);

                int newInst = 0;

                while (objects.hasMoreElements()) {

                    JavaHeapObject obj = (JavaHeapObject)objects.nextElement();

                    if (obj.isNew()) {

                        newInst++;

                    }

                }

                print("(");

                printAnchorStart();

                print("newInstances/" + encodeForURL(classes[i]));

                out.print("\">");

                print("" + newInst + " new");

                out.print("</a>) ");

            }

            print("of ");

            printClass(classes[i]);

            out.println("<br>");

            instances += count;

            totalSize += classes[i].getTotalInstanceSize();

        }

        out.println("<h2>Total of " + instances + " instances occupying " + totalSize + " bytes.</h2>");

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

        out.println("<ul>");

        out.print("<li>");

        printAnchorStart();

        if (!excludePlatform) {

            out.print("showInstanceCounts/\">");

            print("Show instance counts for all classes (excluding platform)");

        } else {

            out.print("showInstanceCounts/includePlatform/\">");

            print("Show instance counts for all classes (including platform)");

        }

        out.println("</a>");

        out.print("<li>");

        printAnchorStart();

        out.print("allClassesWithPlatform/\">");

        print("Show All Classes (including platform)");

        out.println("</a>");

        out.print("<li>");

        printAnchorStart();

        out.print("\">");

        print("Show All Classes (excluding platform)");

        out.println("</a>");

        out.println("</ul>");

        endHtml();

    }

}