| /* |
| * Copyright (c) 2006, 2010, 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 6436220 |
| * @summary SelectionKey.attach should atomically set and return the attachment |
| */ |
| import java.nio.channels.*; |
| import java.util.concurrent.atomic.*; |
| |
| public class AtomicAttachTest { |
| public static void main(String[] args) throws Exception { |
| Selector selector = Selector.open(); |
| Pipe pipe = Pipe.open(); |
| SelectableChannel channel = pipe.sink().configureBlocking(false); |
| final SelectionKey key = channel.register(selector, 0); |
| key.attach(new AtomicBoolean()); |
| |
| final AtomicInteger errorCount = new AtomicInteger(); |
| |
| Thread t = new Thread() { |
| public void run() { |
| AtomicBoolean att = new AtomicBoolean(); |
| for (int i=0; i<(10*1000*1000); i++) { |
| att = (AtomicBoolean)key.attach(att); |
| // We should have exclusive ownership of att. |
| if (!att.compareAndSet(false, true) || |
| !att.compareAndSet(true, false)) |
| { |
| errorCount.incrementAndGet(); |
| } |
| } |
| } |
| { |
| start(); |
| run(); |
| } |
| }; |
| |
| t.join(); |
| |
| pipe.sink().close(); |
| pipe.source().close(); |
| selector.close(); |
| |
| int count = errorCount.get(); |
| if (count > 0) { |
| throw new RuntimeException("Error count:" + count); |
| } |
| } |
| } |