InstancesCountQuery.java

/*
 * Copyright (c) 1997, 2008, 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.google.common.collect.Collections2;
import com.google.common.collect.Ordering;
import com.sun.tools.hat.internal.model.*;

import java.util.Collection;

/**
 *
 * @author      Bill Foote
 */


class InstancesCountQuery extends QueryHandler {
    private final boolean excludePlatform;

    public InstancesCountQuery(boolean excludePlatform) {
        this.excludePlatform = excludePlatform;
    }

    @Override
    public void run() {
        if (excludePlatform) {
            startHtml("Instance Counts for All Classes (excluding platform)");
        } else {
            startHtml("Instance Counts for All Classes (including platform)");
        }

        Collection<JavaClass> classes = snapshot.getClasses();
        if (excludePlatform) {
            classes = Collections2.filter(classes, cls -> !PlatformClasses.isPlatformClass(cls));
        }

        long totalSize = classes.stream().mapToLong(JavaClass::getTotalInstanceSize).sum();
        long instances = classes.stream().mapToLong(cls -> cls.getInstancesCount(false)).sum();
        classes.stream().sorted(Ordering.natural().reverse().onResultOf((JavaClass cls) -> cls.getInstancesCount(false))
                .compound(Ordering.natural().onResultOf((JavaClass cls) -> cls.getName().startsWith("[")))
                .compound(Ordering.natural().onResultOf(JavaClass::getName))).forEach(clazz -> {
            int count = clazz.getInstancesCount(false);
            print("" + count);
            printAnchorStart();
            print("instances/" + encodeForURL(clazz));
            out.print("\"> ");
            if (count == 1) {
                print("instance");
            } else {
                print("instances");
            }
            out.print("</a> ");
            if (snapshot.getHasNewSet()) {
                int newInst = 0;
                for (JavaHeapObject obj : clazz.getInstances(false)) {
                    if (obj.isNew()) {
                        newInst++;
                    }
                }
                print("(");
                printAnchorStart();
                print("newInstances/" + encodeForURL(clazz));
                out.print("\">");
                print("" + newInst + " new");
                out.print("</a>) ");
            }
            print("of ");
            printClass(clazz);
            out.println("<br>");
        });
        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();
    }


}