| /* |
| * Copyright (c) 2008, 2009, 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 6842687 |
| * @summary Unit test for AsynchronousSocketChannel/AsynchronousServerSocketChannel |
| */ |
| import java.nio.ByteBuffer; |
| import java.nio.channels.*; |
| import java.net.*; |
| import java.util.concurrent.*; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| /** |
| * Initiates I/O operation on a thread that terminates before the I/O completes. |
| */ |
| |
| public class DieBeforeComplete { |
| |
| public static void main(String[] args) throws Exception { |
| final AsynchronousServerSocketChannel listener = |
| AsynchronousServerSocketChannel.open().bind(new InetSocketAddress(0)); |
| |
| InetAddress lh = InetAddress.getLocalHost(); |
| int port = ((InetSocketAddress) (listener.getLocalAddress())).getPort(); |
| final SocketAddress sa = new InetSocketAddress(lh, port); |
| |
| // -- accept -- |
| |
| // initiate accept in a thread that dies before connection is established |
| Future<AsynchronousSocketChannel> r1 = |
| initiateAndDie(new Task<AsynchronousSocketChannel>() { |
| public Future<AsynchronousSocketChannel> run() { |
| return listener.accept(); |
| }}); |
| |
| // establish and accept connection |
| SocketChannel peer = SocketChannel.open(sa); |
| final AsynchronousSocketChannel channel = r1.get(); |
| |
| // --- read -- |
| |
| // initiate read in a thread that dies befores bytes are available |
| final ByteBuffer dst = ByteBuffer.allocate(100); |
| Future<Integer> r2 = initiateAndDie(new Task<Integer>() { |
| public Future<Integer> run() { |
| return channel.read(dst); |
| }}); |
| |
| // send bytes |
| peer.write(ByteBuffer.wrap("hello".getBytes())); |
| int nread = r2.get(); |
| if (nread <= 0) |
| throw new RuntimeException("Should have read at least one byte"); |
| |
| // -- write -- |
| |
| // initiate writes in threads that dies |
| boolean completedImmediately; |
| Future<Integer> r3; |
| do { |
| final ByteBuffer src = ByteBuffer.wrap(new byte[10000]); |
| r3 = initiateAndDie(new Task<Integer>() { |
| public Future<Integer> run() { |
| return channel.write(src); |
| }}); |
| try { |
| int nsent = r3.get(5, TimeUnit.SECONDS); |
| if (nsent <= 0) |
| throw new RuntimeException("Should have wrote at least one byte"); |
| completedImmediately = true; |
| } catch (TimeoutException x) { |
| completedImmediately = false; |
| } |
| } while (completedImmediately); |
| |
| // drain connection |
| peer.configureBlocking(false); |
| ByteBuffer src = ByteBuffer.allocateDirect(10000); |
| do { |
| src.clear(); |
| nread = peer.read(src); |
| if (nread == 0) { |
| Thread.sleep(100); |
| nread = peer.read(src); |
| } |
| } while (nread > 0); |
| |
| // write should complete now |
| int nsent = r3.get(); |
| if (nsent <= 0) |
| throw new RuntimeException("Should have wrote at least one byte"); |
| } |
| |
| static interface Task<T> { |
| Future<T> run(); |
| } |
| |
| static <T> Future<T> initiateAndDie(final Task<T> task) { |
| final AtomicReference<Future<T>> result = new AtomicReference<Future<T>>(); |
| Runnable r = new Runnable() { |
| public void run() { |
| result.set(task.run()); |
| } |
| }; |
| Thread t = new Thread(r); |
| t.start(); |
| while (t.isAlive()) { |
| try { |
| t.join(); |
| } catch (InterruptedException x) { |
| } |
| } |
| return result.get(); |
| } |
| } |