| /* |
| * Copyright (c) 2018, 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 |
| * @run testng UpdateReadyOps |
| * @summary Test that the ready set from a selection operation is bitwise-disjoined |
| * into a key's ready set when the key is already in the selected-key set |
| */ |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.net.InetSocketAddress; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.SelectionKey; |
| import java.nio.channels.Selector; |
| import java.nio.channels.ServerSocketChannel; |
| import java.nio.channels.SocketChannel; |
| |
| import org.testng.annotations.Test; |
| import static org.testng.Assert.*; |
| |
| @Test |
| public class UpdateReadyOps { |
| |
| /** |
| * Test that OP_WRITE is preserved when updating the ready set of a key in |
| * the selected-key set to add OP_READ. |
| */ |
| public void testOpWritePreserved() throws Exception { |
| try (ConnectionPair pair = new ConnectionPair(); |
| Selector sel = Selector.open()) { |
| |
| SocketChannel sc1 = pair.channel1(); |
| SocketChannel sc2 = pair.channel2(); |
| |
| sc1.configureBlocking(false); |
| SelectionKey key = sc1.register(sel, SelectionKey.OP_WRITE); |
| |
| int updated = sel.select(); |
| assertTrue(updated == 1); |
| assertTrue(sel.selectedKeys().contains(key)); |
| assertFalse(key.isReadable()); |
| assertTrue(key.isWritable()); |
| |
| // select again, should be no updates |
| updated = sel.select(); |
| assertTrue(updated == 0); |
| assertTrue(sel.selectedKeys().contains(key)); |
| assertFalse(key.isReadable()); |
| assertTrue(key.isWritable()); |
| |
| // write some bytes |
| sc2.write(helloMessage()); |
| |
| // change interest ops to OP_READ, do a selection operation, and |
| // check that the ready set becomes OP_READ|OP_WRITE. |
| |
| key.interestOps(SelectionKey.OP_READ); |
| updated = sel.select(); |
| assertTrue(updated == 1); |
| assertTrue(sel.selectedKeys().size() == 1); |
| assertTrue(key.isReadable()); |
| assertTrue(key.isWritable()); |
| assertTrue(key.readyOps() == (SelectionKey.OP_READ|SelectionKey.OP_WRITE)); |
| |
| // select again, should be no updates |
| updated = sel.select(); |
| assertTrue(updated == 0); |
| assertTrue(sel.selectedKeys().size() == 1); |
| assertTrue(key.isReadable()); |
| assertTrue(key.isWritable()); |
| } |
| } |
| |
| /** |
| * Test that OP_READ is preserved when updating the ready set of a key in |
| * the selected-key set to add OP_WRITE. |
| */ |
| public void testOpReadPreserved() throws Exception { |
| try (ConnectionPair pair = new ConnectionPair(); |
| Selector sel = Selector.open()) { |
| |
| SocketChannel sc1 = pair.channel1(); |
| SocketChannel sc2 = pair.channel2(); |
| |
| sc1.configureBlocking(false); |
| SelectionKey key = sc1.register(sel, SelectionKey.OP_READ); |
| |
| // write some bytes |
| sc2.write(helloMessage()); |
| |
| int updated = sel.select(); |
| assertTrue(updated == 1); |
| assertTrue(sel.selectedKeys().size() == 1); |
| assertTrue(sel.selectedKeys().contains(key)); |
| assertTrue(key.isReadable()); |
| assertFalse(key.isWritable()); |
| |
| // select again, should be no updates |
| updated = sel.select(); |
| assertTrue(updated == 0); |
| assertTrue(sel.selectedKeys().contains(key)); |
| assertTrue(key.isReadable()); |
| assertFalse(key.isWritable()); |
| |
| key.interestOps(SelectionKey.OP_WRITE); |
| updated = sel.select(); |
| assertTrue(updated == 1); |
| assertTrue(sel.selectedKeys().size() == 1); |
| assertTrue(sel.selectedKeys().contains(key)); |
| assertTrue(key.isReadable()); |
| assertTrue(key.isWritable()); |
| assertTrue(key.readyOps() == (SelectionKey.OP_READ|SelectionKey.OP_WRITE)); |
| |
| // select again, should be no updates |
| updated = sel.select(); |
| assertTrue(updated == 0); |
| assertTrue(sel.selectedKeys().size() == 1); |
| assertTrue(key.isReadable()); |
| assertTrue(key.isWritable()); |
| } |
| } |
| |
| static class ConnectionPair implements Closeable { |
| |
| private final SocketChannel sc1; |
| private final SocketChannel sc2; |
| |
| ConnectionPair() throws IOException { |
| InetAddress lb = InetAddress.getLoopbackAddress(); |
| try (ServerSocketChannel ssc = ServerSocketChannel.open()) { |
| ssc.bind(new InetSocketAddress(lb, 0)); |
| this.sc1 = SocketChannel.open(ssc.getLocalAddress()); |
| this.sc2 = ssc.accept(); |
| } |
| } |
| |
| SocketChannel channel1() { |
| return sc1; |
| } |
| |
| SocketChannel channel2() { |
| return sc2; |
| } |
| |
| public void close() throws IOException { |
| sc1.close(); |
| sc2.close(); |
| } |
| } |
| |
| static ByteBuffer helloMessage() throws Exception { |
| return ByteBuffer.wrap("hello".getBytes("UTF-8")); |
| } |
| } |