| /* |
| * Copyright (c) 2005, 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 6232010 |
| * @summary this test checks that replacing SoftCache class with ConcurrentMap |
| * in ObjectInputStream/ObjectOutputStream gives an opportunity to |
| * classes which are inherited from OIS and OOS and loaded through |
| * separete ClassLoaders be available for garbage collection |
| * |
| * @author Andrey Ozerov |
| * @run main/othervm/policy=security.policy SubclassGC |
| */ |
| |
| import java.io.*; |
| import java.lang.ref.Reference; |
| import java.lang.ref.ReferenceQueue; |
| import java.lang.ref.WeakReference; |
| import java.lang.reflect.Constructor; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| |
| public class SubclassGC { |
| private static final long TIMEOUT = 1000; |
| |
| public static final void main(String[] args) throws Exception { |
| System.err.println("\n Regression test for bug 6232010\n"); |
| if (System.getSecurityManager() == null) { |
| System.setSecurityManager(new SecurityManager()); |
| } |
| |
| ClassLoader systemLoader = ClassLoader.getSystemClassLoader(); |
| ClassLoader loader = new URLClassLoader(((URLClassLoader) systemLoader).getURLs(), |
| systemLoader.getParent()); |
| Class<? extends ObjectOutputStream> cl = |
| Class.forName(SubclassOfOOS.class.getName(), false, |
| loader).asSubclass(ObjectOutputStream.class); |
| |
| Constructor<? extends ObjectOutputStream> cons = |
| cl.getConstructor(OutputStream.class); |
| |
| OutputStream os = new ByteArrayOutputStream(); |
| ObjectOutputStream obj = cons.newInstance(os); |
| |
| final ReferenceQueue<Class<?>> queue = new ReferenceQueue<Class<?>>(); |
| WeakReference<Class<?>> ref = new WeakReference<Class<?>>(cl, queue); |
| |
| cl = null; |
| obj = null; |
| loader = null; |
| cons = null; |
| systemLoader = null; |
| |
| System.err.println("\nStart Garbage Collection right now"); |
| System.gc(); |
| |
| Reference<? extends Class<?>> dequeued = queue.remove(TIMEOUT); |
| if (dequeued == ref) { |
| System.err.println("\nTEST PASSED"); |
| } else { |
| throw new Error(); |
| } |
| } |
| } |