/*

 * 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

 * @bug 8151486

 * @summary Call Class.forName() on the system classloader from a class loaded

 *          from a custom classloader, using the current class's protection domain.

 * @library /test/jdk/lib/testlibrary

 * @build jdk.testlibrary.Utils JarUtils

 * @build ClassForName ProtectionDomainCacheTest

 * @run main/othervm/policy=test.policy -XX:+UnlockDiagnosticVMOptions -XX:VerifySubSet=dictionary -XX:+VerifyAfterGC -Xlog:gc+verify=debug,protectiondomain=trace,class+unload:gc.log -Djava.security.manager ProtectionDomainCacheTest

 */

import java.net.URL;

import java.net.URLClassLoader;

import java.nio.file.FileSystems;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.List;

import jdk.testlibrary.Utils;

/*

 * Create .jar, load ClassForName from .jar using a URLClassLoader

 */

public class ProtectionDomainCacheTest {

    private static final long TIMEOUT = (long)(5000.0 * Utils.TIMEOUT_FACTOR);

    private static final String TESTCLASSES = System.getProperty("test.classes", ".");

    private static final String CLASSFILENAME = "ClassForName.class";

    // Use a new classloader to load the ClassForName class.

    public static void loadAndRun(Path jarFilePath)

            throws Exception {

        ClassLoader classLoader = new URLClassLoader(

                new URL[]{jarFilePath.toUri().toURL()}) {

            @Override public String toString() { return "LeakedClassLoader"; }

        };

        Class<?> loadClass = Class.forName("ClassForName", true, classLoader);

        loadClass.newInstance();

        System.out.println("returning : " + classLoader);

    }

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

        // Create a temporary .jar file containing ClassForName.class

        Path testClassesDir = Paths.get(TESTCLASSES);

        Path jarFilePath = Files.createTempFile("cfn", ".jar");

        JarUtils.createJarFile(jarFilePath, testClassesDir, CLASSFILENAME);

        jarFilePath.toFile().deleteOnExit();

        // Remove the ClassForName.class file that jtreg built, to make sure

        // we're loading from the tmp .jar

        Path classFile = FileSystems.getDefault().getPath(TESTCLASSES,

                                                          CLASSFILENAME);

        Files.delete(classFile);

        loadAndRun(jarFilePath);

        // Give the GC a chance to unload protection domains

        for (int i = 0; i < 100; i++) {

            System.gc();

        }

        System.out.println("All Classloaders and protection domain cache entries successfully unloaded");

    }

}