| /* |
| * Copyright (c) 2008, 2013, 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 4607272 6842687 |
| * @summary Unit test for AsynchronousChannelGroup |
| */ |
| |
| import java.nio.ByteBuffer; |
| import java.nio.channels.*; |
| import java.net.*; |
| import java.util.concurrent.*; |
| import java.io.IOException; |
| |
| public class Unbounded { |
| // number of concurrent completion handlers |
| static final int CONCURRENCY_COUNT = 256; |
| |
| // set to true if an I/O operation fails |
| static volatile boolean failed; |
| |
| // set to true when the test is done |
| static volatile boolean finished; |
| |
| public static void main(String[] args) throws Exception { |
| // create listener to accept connections |
| AsynchronousServerSocketChannel listener = |
| AsynchronousServerSocketChannel.open() |
| .bind(new InetSocketAddress(0)); |
| |
| // establish connections |
| |
| AsynchronousSocketChannel[] clients = new AsynchronousSocketChannel[CONCURRENCY_COUNT]; |
| AsynchronousSocketChannel[] peers = new AsynchronousSocketChannel[CONCURRENCY_COUNT]; |
| |
| int port = ((InetSocketAddress)(listener.getLocalAddress())).getPort(); |
| SocketAddress sa = new InetSocketAddress(InetAddress.getLocalHost(), port); |
| |
| for (int i=0; i<CONCURRENCY_COUNT; i++) { |
| clients[i] = AsynchronousSocketChannel.open(); |
| Future<Void> result = clients[i].connect(sa); |
| peers[i] = listener.accept().get(); |
| result.get(); |
| } |
| System.out.println("All connection established."); |
| |
| // the barrier where all threads (plus the main thread) wait |
| final CyclicBarrier barrier = new CyclicBarrier(CONCURRENCY_COUNT+1); |
| |
| // initiate a read operation on each channel. |
| for (AsynchronousSocketChannel client: clients) { |
| ByteBuffer buf = ByteBuffer.allocateDirect(100); |
| client.read(buf, client, |
| new CompletionHandler<Integer,AsynchronousSocketChannel>() { |
| public void completed(Integer bytesRead, AsynchronousSocketChannel ch) { |
| try { |
| ch.close(); |
| barrier.await(); |
| } catch (Exception x) { |
| throw new AssertionError(x); |
| } |
| } |
| public void failed(Throwable exc, AsynchronousSocketChannel ch) { |
| failed = true; |
| System.err.println("read failed: " + exc); |
| completed(0, ch); |
| } |
| }); |
| } |
| System.out.println("All read operations outstanding."); |
| |
| // write data to each of the accepted connections |
| for (AsynchronousSocketChannel peer: peers) { |
| peer.write(ByteBuffer.wrap("welcome".getBytes())).get(); |
| peer.shutdownOutput(); |
| peer.close(); |
| } |
| |
| // wait for all threads to reach the barrier |
| System.out.println("Waiting for all threads to reach barrier"); |
| barrier.await(); |
| |
| // finish up |
| finished = true; |
| listener.close(); |
| if (failed) |
| throw new RuntimeException("I/O operation failed, see log for details"); |
| } |
| } |