1 /* 2 * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* @test 25 * @bug 6275081 26 * @summary Rapidly alternating the number of remote objects exported 27 * on an explicit port between zero and greater than zero (thus 28 * causing the associated server socket to be created and closed 29 * repeatedly) should not encounter substantial synchronous delays 30 * because of the server socket accept loop's failure throttling 31 * procedure (which sleeps 10 seconds after 10 rapid failures). 32 * @author Peter Jones 33 * 34 * @library ../../testlibrary 35 * @modules java.rmi/sun.rmi.registry 36 * java.rmi/sun.rmi.server 37 * java.rmi/sun.rmi.transport 38 * java.rmi/sun.rmi.transport.tcp 39 * @build TestLibrary 40 * @run main/othervm RapidExportUnexport 41 */ 42 43 import java.rmi.Remote; 44 import java.rmi.server.UnicastRemoteObject; 45 46 public class RapidExportUnexport { 47 private static final int PORT = TestLibrary.getUnusedRandomPort(); 48 private static final int REPS = 100; 49 private static final long TIMEOUT = 60000; 50 51 public static void main(String[] args) throws Exception { 52 System.err.println("\nRegression test for bug 6275081\n"); 53 54 Remote impl = new Remote() { }; 55 long start = System.currentTimeMillis(); 56 for (int i = 0; i < REPS; i++) { 57 System.err.println(i); 58 UnicastRemoteObject.exportObject(impl, PORT); 59 UnicastRemoteObject.unexportObject(impl, true); 60 Thread.sleep(1); // work around BindException (bug?) 61 } 62 long delta = System.currentTimeMillis() - start; 63 System.err.println(REPS + " export/unexport operations took " + 64 delta + "ms"); 65 if (delta > TIMEOUT) { 66 throw new Error("TEST FAILED: took over " + TIMEOUT + "ms"); 67 } 68 System.err.println("TEST PASSED"); 69 } 70 }