| /* |
| * Copyright (c) 2000, 2008, 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 4331349 |
| * @summary synopsis: unexporting doesn't guarantee that DGC will |
| * let go of remote object |
| * |
| * @author Ann Wollrath |
| * |
| * @build UnexportLeak |
| * @build UnexportLeak_Stub |
| * @build Ping |
| * @run main/othervm UnexportLeak |
| */ |
| |
| import java.lang.ref.*; |
| import java.rmi.*; |
| import java.rmi.server.*; |
| import java.rmi.registry.*; |
| |
| public class UnexportLeak implements Ping { |
| |
| private static int PORT = 2006; |
| |
| public void ping() { |
| } |
| |
| public static void main(String[] args) { |
| try { |
| System.err.println("\nRegression test for bug 4331349\n"); |
| LocateRegistry.createRegistry(PORT); |
| Remote obj = new UnexportLeak(); |
| WeakReference wr = new WeakReference(obj); |
| UnicastRemoteObject.exportObject(obj); |
| LocateRegistry.getRegistry(PORT).rebind("UnexportLeak", obj); |
| UnicastRemoteObject.unexportObject(obj, true); |
| obj = null; |
| flushRefs(); |
| if (wr.get() != null) { |
| System.err.println("FAILED: unexported object not collected"); |
| throw new RuntimeException( |
| "FAILED: unexported object not collected"); |
| } else { |
| System.err.println("PASSED: unexported object collected"); |
| } |
| } catch (RemoteException e) { |
| System.err.println( |
| "FAILED: RemoteException encountered: " + e.getMessage()); |
| e.printStackTrace(); |
| throw new RuntimeException("FAILED: RemoteException encountered"); |
| } |
| } |
| |
| /** |
| * Force desparate garbage collection so that all WeakReference instances |
| * will be cleared. |
| */ |
| private static void flushRefs() { |
| java.util.Vector chain = new java.util.Vector(); |
| try { |
| while (true) { |
| int[] hungry = new int[65536]; |
| chain.addElement(hungry); |
| } |
| } catch (OutOfMemoryError e) { |
| } |
| } |
| } |