| /* |
| * Copyright (c) 2012, 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 8005281 |
| * @summary Test that the Properties storeToXML and loadFromXML methods are |
| * thread safe |
| * @key randomness |
| */ |
| |
| import java.io.*; |
| import java.util.Properties; |
| import java.util.Random; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Future; |
| |
| public class ConcurrentLoadAndStoreXML { |
| |
| static final Random RAND = new Random(); |
| |
| static volatile boolean done; |
| |
| /** |
| * Simple task that bashes on storeToXML and loadFromXML until the "done" |
| * flag is set. |
| */ |
| static class Basher implements Callable<Void> { |
| final Properties props; |
| |
| Basher(Properties props) { |
| this.props = props; |
| } |
| |
| public Void call() throws IOException { |
| while (!done) { |
| |
| // store as XML format |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| props.storeToXML(out, null, "UTF-8"); |
| |
| // load from XML format |
| Properties p = new Properties(); |
| ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray()); |
| p.loadFromXML(in); |
| |
| // check that the properties are as expected |
| if (!p.equals(props)) |
| throw new RuntimeException("Properties not equal"); |
| } |
| return null; |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| final int NTASKS = 4 + RAND.nextInt(4); |
| |
| // create Bashers with Properties of random keys and values |
| Basher[] basher = new Basher[NTASKS]; |
| for (int i=0; i<NTASKS; i++) { |
| Properties props = new Properties(); |
| for (int j=0; j<RAND.nextInt(100); j++) { |
| String key = "k" + RAND.nextInt(1000); |
| String value = "v" + RAND.nextInt(1000); |
| props.put(key, value); |
| } |
| basher[i] = new Basher(props); |
| } |
| |
| ExecutorService pool = Executors.newFixedThreadPool(NTASKS); |
| try { |
| // kick off the bashers |
| Future<Void>[] task = new Future[NTASKS]; |
| for (int i=0; i<NTASKS; i++) { |
| task[i] = pool.submit(basher[i]); |
| } |
| |
| // give them time to interfere with each each |
| Thread.sleep(2000); |
| done = true; |
| |
| // check the result |
| for (int i=0; i<NTASKS; i++) { |
| task[i].get(); |
| } |
| } finally { |
| done = true; |
| pool.shutdown(); |
| } |
| |
| } |
| } |