/*

 * Copyright (c) 2001, 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.

 *

 * 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.

 */

/**

 *

 */

import java.util.*;

class UnloadEventTarg {

    static int loadersFinalized = 0;

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

        loadup("first");

        loadup("second");

        if (!forceUnload()) {

            System.err.println("Unable to force unload");

        }

        lastStop();

    }

    static void loadup(String id) throws ClassNotFoundException {

        ClassLoaderTarg cl = new ClassLoaderTarg(id);

        cl.findClass("Unload1Targ").getFields();

        cl.findClass("Unload2Targ").getFields();

    }

    static boolean forceUnload() {

        List holdAlot = new ArrayList();

        for (int chunk=10000000; chunk > 10000; chunk = chunk / 2) {

            if (loadersFinalized > 1) {

                return true;

            }

            try {

                while(true) {

                    holdAlot.add(new byte[chunk]);

                    System.err.println("Allocated " + chunk);

                }

            }

            catch ( Throwable thrown ) {  // OutOfMemoryError

                System.gc();

            }

            System.runFinalization();

        }

        return false;

    }

    static void classLoaderFinalized(String id) {

        System.err.println("finalizing ClassLoaderTarg - " + id);

        loadersFinalized++;

    }

    static void unloading1() {

        System.err.println("unloading Unload1Targ");

    }

    static void unloading2() {

        System.err.println("unloading Unload2Targ");

    }

    static void lastStop() {

        System.err.println("UnloadEventTarg exiting");

    }

}