1 /* 2 * Copyright (c) 2011 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 */ 34 35 import java.rmi.Remote; 36 import java.rmi.server.UnicastRemoteObject; 37 38 public class GcDuringExport { 39 private static final long MAX_EXPORT_ITERATIONS = 50000; 40 41 public static void main(String[] args) throws Exception { 42 Thread gcInducingThread = new Thread() { 43 public void run() { 44 while (true) { 45 System.gc(); 46 try { Thread.sleep(1); } catch (InterruptedException e) { } 47 } 48 } 49 }; 50 gcInducingThread.setDaemon(true); 51 gcInducingThread.start(); 52 53 long i = 0; 54 try { 55 while (i < MAX_EXPORT_ITERATIONS) { 56 i++; 57 UnicastRemoteObject.exportObject(new Remote() { }, 0); 58 } 59 } catch (Throwable e) { 60 throw new RuntimeException("Test FAILED on iteration " + i + ".", e); 61 } 62 63 System.out.println("Test successfully exported " + i + " objects."); 64 } 65 } 66 67