author | ohair |
Tue, 25 May 2010 15:58:33 -0700 | |
changeset 5506 | 202f599c92aa |
parent 715 | f16baef3a20e |
child 13256 | 5886d7607acd |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* @test |
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* @bug 4486732 |
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* @summary When a remote stub contains a client socket factory and a |
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* remote invocation is made using that stub, the factory should not |
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* be held strongly reachable by the RMI implementation forever; in |
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* particular, after the stub has become unreachable and all |
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* connections to its endpoint have been closed, then the factory |
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* should become unreachable too (through the RMI implementation). |
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* @author Peter Jones |
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* |
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* @run main/othervm -Dsun.rmi.transport.connectionTimeout=2000 |
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* PinClientSocketFactory |
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*/ |
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import java.io.IOException; |
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import java.io.ObjectInputStream; |
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import java.io.Serializable; |
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import java.lang.ref.Reference; |
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import java.lang.ref.WeakReference; |
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import java.net.ServerSocket; |
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import java.net.Socket; |
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import java.rmi.Remote; |
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import java.rmi.RemoteException; |
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import java.rmi.registry.LocateRegistry; |
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import java.rmi.registry.Registry; |
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import java.rmi.server.RMIClientSocketFactory; |
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import java.rmi.server.RMIServerSocketFactory; |
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import java.rmi.server.UnicastRemoteObject; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.List; |
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import java.util.concurrent.atomic.AtomicInteger; |
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public class PinClientSocketFactory { |
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private static final int PORT = 2345; |
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private static final int SESSIONS = 50; |
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public interface Factory extends Remote { |
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Session getSession() throws RemoteException; |
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} |
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public interface Session extends Remote { |
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void ping() throws RemoteException; |
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} |
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private static class FactoryImpl implements Factory { |
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FactoryImpl() { } |
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public Session getSession() throws RemoteException { |
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Session impl = new SessionImpl(); |
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UnicastRemoteObject.exportObject(impl, 0, new CSF(), new SSF()); |
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// return impl instead of stub to work around 4114579 |
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return impl; |
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} |
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} |
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private static class SessionImpl implements Session { |
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SessionImpl() { } |
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public void ping() { } |
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} |
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public static void main(String[] args) throws Exception { |
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System.err.println("\nRegression test for bug 4486732\n"); |
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Factory factoryImpl = new FactoryImpl(); |
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Factory factoryStub = |
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(Factory) UnicastRemoteObject.exportObject(factoryImpl, 0); |
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for (int i = 0; i < SESSIONS; i++) { |
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Session session = factoryStub.getSession(); |
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session.ping(); |
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} |
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UnicastRemoteObject.unexportObject(factoryImpl, true); |
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Registry registryImpl = LocateRegistry.createRegistry(PORT); |
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CSF csf = new CSF(); |
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Reference<CSF> registryRef = new WeakReference<CSF>(csf); |
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Registry registryStub = LocateRegistry.getRegistry("", PORT, csf); |
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csf = null; |
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registryStub.list(); |
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registryStub = null; |
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UnicastRemoteObject.unexportObject(registryImpl, true); |
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System.gc(); |
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// allow connections to time out |
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Thread.sleep(3 * Long.getLong("sun.rmi.transport.connectionTimeout", |
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15000)); |
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System.gc(); |
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if (CSF.deserializedInstances.size() != SESSIONS) { |
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throw new Error("unexpected number of deserialized instances: " + |
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CSF.deserializedInstances.size()); |
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} |
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int nonNullCount = 0; |
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for (Reference<CSF> ref : CSF.deserializedInstances) { |
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csf = ref.get(); |
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if (csf != null) { |
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System.err.println("non-null deserialized instance: " + csf); |
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nonNullCount++; |
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} |
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} |
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if (nonNullCount > 0) { |
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throw new Error("TEST FAILED: " + |
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nonNullCount + " non-null deserialized instances"); |
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} |
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csf = registryRef.get(); |
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if (csf != null) { |
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System.err.println("non-null registry instance: " + csf); |
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throw new Error("TEST FAILED: non-null registry instance"); |
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} |
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System.err.println("TEST PASSED"); |
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} |
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private static class CSF implements RMIClientSocketFactory, Serializable { |
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static final List<Reference<CSF>> deserializedInstances = |
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Collections.synchronizedList(new ArrayList<Reference<CSF>>()); |
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private static final AtomicInteger count = new AtomicInteger(0); |
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private int num = count.incrementAndGet(); |
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CSF() { } |
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public Socket createSocket(String host, int port) throws IOException { |
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return new Socket(host, port); |
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} |
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public int hashCode() { |
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return num; |
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} |
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public boolean equals(Object obj) { |
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return obj instanceof CSF && ((CSF) obj).num == num; |
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} |
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private void readObject(ObjectInputStream in) |
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throws IOException, ClassNotFoundException |
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{ |
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in.defaultReadObject(); |
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deserializedInstances.add(new WeakReference<CSF>(this)); |
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} |
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} |
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private static class SSF implements RMIServerSocketFactory { |
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SSF() { } |
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public ServerSocket createServerSocket(int port) throws IOException { |
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return new ServerSocket(port); |
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} |
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} |
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} |