/*

 * Copyright (c) 2012, 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.

 *

 * 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.

 */

/*

 * @test

 * @bug 8003720

 * @summary Method in interpreter stack frame can be deallocated

 * @modules java.base/jdk.internal.org.objectweb.asm

 *          java.base/jdk.internal.misc

 * @compile -XDignore.symbol.file Victim.java

 * @run main/othervm -Xverify:all -Xint Test8003720

 */

// Attempts to make the JVM unload a class while still executing one of its methods.

public class Test8003720 {

    final static String VICTIM_CLASS_NAME = "Victim";

    final static boolean QUIET = true;

    final static long DURATION = 30000;

    public interface CallMe { void callme(); }

    public static void main(String... av) throws Throwable {

        newVictimClassLoader();

        System.gc();

        newVictimClass();

        System.gc();

        newVictimInstance();

        System.gc();

        ((CallMe)newVictimInstance()).callme();

    }

    public static Object newVictimInstance() throws Throwable {

        return newVictimClass().newInstance();

    }

    public static Class<?> newVictimClass() throws Throwable {

        return Class.forName(VICTIM_CLASS_NAME, true, new VictimClassLoader());

    }

    public static ClassLoader newVictimClassLoader() throws Throwable {

        return new VictimClassLoader();

    }

    public static void println(String line) {

        if (!QUIET) {

            System.out.println(line);

        }

    }

}