/*

 * Copyright (c) 2003, 2015, 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.

 *

 * 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.

 *

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 */

/*

 * @test

 * @bug     4858522

 * @summary Basic unit test of HotspotClassLoadingMBean.getUnloadedClassSize()

 * @author  Steve Bohne

 *

 * @run main/othervm -XX:+UsePerfData GetUnloadedClassSize

 */

/*

 * This test is just a sanity check and does not check for the correct value.

 */

import sun.management.*;

public class GetUnloadedClassSize {

    private static HotspotClassLoadingMBean mbean =

        (HotspotClassLoadingMBean)ManagementFactoryHelper.getHotspotClassLoadingMBean();

    // Careful with these values.

    private static final long MIN_VALUE_FOR_PASS = 0;

    private static final long MAX_VALUE_FOR_PASS = Long.MAX_VALUE;

    private static boolean trace = false;

    public static void main(String args[]) throws Exception {

        if (args.length > 0 && args[0].equals("trace")) {

            trace = true;

        }

        long value = mbean.getUnloadedClassSize();

        if (trace) {

            System.out.println("Unloaded class size (bytes): " + value);

        }

        if (value < MIN_VALUE_FOR_PASS || value > MAX_VALUE_FOR_PASS) {

            throw new RuntimeException("Unloaded class size " +

                                       "illegal value: " + value + " bytes " +

                                       "(MIN = " + MIN_VALUE_FOR_PASS + "; " +

                                       "MAX = " + MAX_VALUE_FOR_PASS + ")");

        }

        System.out.println("Test passed.");

    }

}