| /* |
| * 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 |
| * @summary Test asynchronous close during a blocking write |
| * @key randomness |
| */ |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.*; |
| import java.net.*; |
| import java.util.concurrent.*; |
| import java.util.Random; |
| |
| public class CloseDuringWrite { |
| |
| static final Random rand = new Random(); |
| |
| /** |
| * A task that closes a Closeable |
| */ |
| static class Closer implements Callable<Void> { |
| final Closeable c; |
| Closer(Closeable c) { |
| this.c = c; |
| } |
| public Void call() throws IOException { |
| c.close(); |
| return null; |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| ScheduledExecutorService pool = Executors.newSingleThreadScheduledExecutor(); |
| try { |
| try (ServerSocketChannel ssc = ServerSocketChannel.open()) { |
| ssc.bind(new InetSocketAddress(0)); |
| InetAddress lh = InetAddress.getLocalHost(); |
| int port = ssc.socket().getLocalPort(); |
| SocketAddress sa = new InetSocketAddress(lh, port); |
| |
| ByteBuffer bb = ByteBuffer.allocate(2*1024*1024); |
| |
| for (int i=0; i<20; i++) { |
| try (SocketChannel source = SocketChannel.open(sa); |
| SocketChannel sink = ssc.accept()) |
| { |
| // schedule channel to be closed |
| Closer c = new Closer(source); |
| int when = 1000 + rand.nextInt(2000); |
| Future<Void> result = pool.schedule(c, when, TimeUnit.MILLISECONDS); |
| |
| // the write should either succeed or else throw a |
| // ClosedChannelException (more likely an |
| // AsynchronousCloseException) |
| try { |
| for (;;) { |
| int limit = rand.nextInt(bb.capacity()); |
| bb.position(0); |
| bb.limit(limit); |
| int n = source.write(bb); |
| System.out.format("wrote %d, expected %d%n", n, limit); |
| } |
| } catch (ClosedChannelException expected) { |
| System.out.println(expected + " (expected)"); |
| } finally { |
| result.get(); |
| } |
| } |
| } |
| } |
| } finally { |
| pool.shutdown(); |
| } |
| } |
| } |