/*

 * Copyright (c) 2018, 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 SuperDependsTest

 * @bug 8210094

 * @summary Create ClassLoader dependency from initiating loader to class loader through subclassing

 * @modules java.base/jdk.internal.misc

 *          java.compiler

 * @library /runtime/testlibrary /test/lib

 * @build sun.hotspot.WhiteBox

 * @compile p2/c2.java MyDiffClassLoader.java

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

 */

import sun.hotspot.WhiteBox;

import p2.*;

public class SuperDependsTest {

    public static WhiteBox wb = WhiteBox.getWhiteBox();

    public static final String MY_TEST = "SuperDependsTest$c1s";

    // p2.c2 loads through super class and creates dependency

    public static class c1s extends p2.c2 {

        private void test() throws Exception {

            method2();

        }

        public c1s () throws Exception {

            test();

            ClassUnloadCommon.triggerUnloading();  // should not unload anything

            test();

        }

    }

    public void test() throws Throwable {

        // now use the same loader to load class MyTest

        Class MyTest_class = new MyDiffClassLoader(MY_TEST).loadClass(MY_TEST);

        // Call MyTest to load p2.c2 twice and call p2.c2.method2

        MyTest_class.newInstance();

        ClassUnloadCommon.triggerUnloading();  // should not unload anything

        ClassUnloadCommon.failIf(!wb.isClassAlive(MY_TEST), "should not be unloaded");

        ClassUnloadCommon.failIf(!wb.isClassAlive("p2.c2"), "should not be unloaded");

        // Unless MyTest_class is referenced here, the compiler can unload it.

        System.out.println("Should not unload anything before here because " + MyTest_class + " is still alive.");

    }

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

        SuperDependsTest d = new SuperDependsTest();

        d.test();

        ClassUnloadCommon.triggerUnloading();  // should not unload anything

        System.out.println("Should unload MyTest and p2.c2 just now");

        ClassUnloadCommon.failIf(wb.isClassAlive(MY_TEST), "should be unloaded");

        ClassUnloadCommon.failIf(wb.isClassAlive("p2.c2"), "should be unloaded");

    }

}