1 /* 2 * Copyright (c) 2011, 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 /* 25 * Portions Copyright (c) 2011 IBM Corporation 26 */ 27 28 /* 29 * @test 30 * @bug 6597112 31 * @summary GC'ing objects whilst being exported to RMI should not cause exceptions 32 * @author Neil Richards <neil.richards@ngmr.net>, <neil_richards@uk.ibm.com> 33 * @run main/othervm GcDuringExport 34 */ 35 36 import java.rmi.Remote; 37 import java.rmi.server.UnicastRemoteObject; 38 39 public class GcDuringExport { 40 private static final long MAX_EXPORT_ITERATIONS = 50000; 41 42 public static void main(String[] args) throws Exception { 43 Thread gcInducingThread = new Thread() { 44 public void run() { 45 while (true) { 46 System.gc(); 47 try { Thread.sleep(1); } catch (InterruptedException e) { } 48 } 49 } 50 }; 51 gcInducingThread.setDaemon(true); 52 gcInducingThread.start(); 53 54 long i = 0; 55 try { 56 while (i < MAX_EXPORT_ITERATIONS) { 57 i++; 58 UnicastRemoteObject.exportObject(new Remote() { }, 0); 59 } 60 } catch (Throwable e) { 61 throw new RuntimeException("Test FAILED on iteration " + i + ".", e); 62 } 63 64 System.out.println("Test successfully exported " + i + " objects."); 65 } 66 }