5522N/A/*
5522N/A * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
5522N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5522N/A *
5522N/A * This code is free software; you can redistribute it and/or modify it
5522N/A * under the terms of the GNU General Public License version 2 only, as
5522N/A * published by the Free Software Foundation.
5522N/A *
5522N/A * This code is distributed in the hope that it will be useful, but WITHOUT
5522N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
5522N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
5522N/A * version 2 for more details (a copy is included in the LICENSE file that
5522N/A * accompanied this code).
5522N/A *
5522N/A * You should have received a copy of the GNU General Public License version
5522N/A * 2 along with this work; if not, write to the Free Software Foundation,
5522N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
5522N/A *
5522N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
5522N/A * or visit www.oracle.com if you need additional information or have any
5522N/A * questions.
5522N/A */
5522N/A
5522N/A/* @test
5522N/A * @bug 7132889
5522N/A * @summary Test that register does not return a valid SelectionKey when
5522N/A * invoked at around the time that the channel is closed
5522N/A */
5522N/A
5522N/Aimport java.nio.channels.*;
5522N/Aimport java.util.concurrent.*;
5522N/Aimport java.util.Random;
5522N/Aimport java.io.IOException;
5522N/A
5522N/Apublic class RacyRegister {
5522N/A
5522N/A public static void main(String[] args) throws Exception {
5522N/A ExecutorService pool = Executors.newFixedThreadPool(1);
5522N/A try (Selector sel = Selector.open()) {
5522N/A int count = 100;
5522N/A while (count-- > 0) {
5522N/A final SocketChannel sc = SocketChannel.open();
5522N/A sc.configureBlocking(false);
5522N/A
5522N/A // close channel asynchronously
5522N/A Future<Void> result = pool.submit(new Callable<Void>() {
5522N/A public Void call() throws IOException {
5522N/A sc.close();
5522N/A return null;
5522N/A }
5522N/A });
5522N/A
5522N/A // attempt to register channel with Selector
5522N/A SelectionKey key = null;
5522N/A try {
5522N/A key = sc.register(sel, SelectionKey.OP_READ);
5522N/A } catch (ClosedChannelException ignore) {
5522N/A }
5522N/A
5522N/A // ensure close is done
5522N/A result.get();
5522N/A
5522N/A // if we have a key then it should be invalid
5522N/A if (key != null && key.isValid())
5522N/A throw new RuntimeException("Key is valid");
5522N/A }
5522N/A } finally {
5522N/A pool.shutdown();
5522N/A }
5522N/A }
5522N/A}