| /* |
| * Copyright (c) 2015, 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 8145981 |
| * @summary LinuxWatchService sometimes reports inotify events against wrong directory |
| * @run main UpdateInterference |
| */ |
| import java.io.IOException; |
| import java.nio.file.*; |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| import static java.nio.file.StandardWatchEventKinds.*; |
| |
| public class UpdateInterference { |
| public static void main(String[] args) throws IOException, InterruptedException { |
| final Path root = Files.createTempDirectory("test"); |
| final Path foo = root.resolve("foo"); |
| final Path bar = root.resolve("bar"); |
| final Path baz = root.resolve("baz"); |
| |
| Files.createDirectory(foo); |
| Files.createDirectory(bar); |
| Files.createDirectory(baz); |
| |
| final WatchService watcher = root.getFileSystem().newWatchService(); |
| final WatchKey fooKey = foo.register(watcher, ENTRY_CREATE); |
| final WatchKey barKey = bar.register(watcher, ENTRY_CREATE); |
| |
| new Thread() { |
| { setDaemon(true); } |
| |
| @Override |
| public void run() { |
| while (true) { |
| try { |
| final Path temp = Files.createTempFile(foo, "temp", ".tmp"); |
| Files.delete(temp); |
| Thread.sleep(10); |
| } catch (IOException | InterruptedException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| }.start(); |
| |
| new Thread() { |
| { setDaemon(true); } |
| |
| @Override |
| public void run() { |
| WatchKey bazKeys[] = new WatchKey[32]; |
| while (true) { |
| try { |
| for( int i = 0; i < bazKeys.length; i++) { |
| bazKeys[i] = baz.register(watcher, ENTRY_CREATE); |
| } |
| for( int i = 0; i < bazKeys.length; i++) { |
| bazKeys[i].cancel(); |
| } |
| Thread.sleep(1); |
| } catch (IOException | InterruptedException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| }.start(); |
| |
| long time = System.currentTimeMillis(); |
| while ((System.currentTimeMillis() - time) < 15000) { |
| final WatchKey key = watcher.poll(60, TimeUnit.SECONDS); |
| if (key == null) continue; |
| |
| if (key != fooKey) { |
| List<WatchEvent<?>> pollEvents = key.pollEvents(); |
| for (WatchEvent<?> watchEvent : pollEvents) { |
| System.out.println(watchEvent.count() + " " + |
| watchEvent.kind() + " " + |
| watchEvent.context()); |
| } |
| throw new RuntimeException("Event received for unexpected key"); |
| } |
| key.reset(); |
| } |
| } |
| } |
| |