1 /* 2 * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* @test 25 * @bug 8195160 26 * @summary Test if OP_READ is detected with OP_WRITE in interestOps 27 * @requires (os.family == "linux") 28 * @library .. /test/lib 29 * @build RsocketTest 30 * @run main/othervm -Djava.net.preferIPv4Stack=true OpRead 31 */ 32 33 import java.net.*; 34 import java.nio.*; 35 import java.nio.channels.*; 36 import java.util.*; 37 import jdk.net.Sockets; 38 39 public class OpRead implements Runnable { 40 41 static ServerSocketChannel ssc = null; 42 static SocketChannel sc = null; 43 static SocketChannel peer = null; 44 static InetAddress lh; 45 46 static void test() throws Exception { 47 try { 48 lh = InetAddress.getLocalHost(); 49 ssc = Sockets.openRdmaServerSocketChannel().bind(new InetSocketAddress(lh, 0)); 50 51 // loopback connection 52 sc = Sockets.openRdmaSocketChannel(); 53 Thread t = new Thread(new OpRead()); 54 t.start(); 55 56 peer = ssc.accept(); 57 58 // peer sends message so that "sc" will be readable 59 int n = peer.write(ByteBuffer.wrap("Hello".getBytes())); 60 assert n > 0; 61 62 sc.configureBlocking(false); 63 64 Selector selector = Sockets.openRdmaSelector(); 65 SelectionKey key = sc.register(selector, SelectionKey.OP_READ | 66 SelectionKey.OP_WRITE); 67 68 boolean done = false; 69 int failCount = 0; 70 while (!done) { 71 int nSelected = selector.select(); 72 if (nSelected > 0) { 73 if (nSelected > 1) 74 throw new RuntimeException("More than one channel selected"); 75 Set<SelectionKey> keys = selector.selectedKeys(); 76 Iterator<SelectionKey> iterator = keys.iterator(); 77 while (iterator.hasNext()) { 78 key = iterator.next(); 79 iterator.remove(); 80 if (key.isWritable()) { 81 failCount++; 82 if (failCount > 10) 83 throw new RuntimeException("Test failed"); 84 Thread.sleep(250); 85 } 86 if (key.isReadable()) { 87 done = true; 88 } 89 } 90 } 91 } 92 } finally { 93 if (peer != null) peer.close(); 94 if (sc != null) sc.close(); 95 if (ssc != null) ssc.close(); 96 } 97 } 98 99 public void run() { 100 try { 101 sc.connect(new InetSocketAddress(lh, ssc.socket().getLocalPort())); 102 } catch (Exception e) { 103 e.printStackTrace(); 104 throw new RuntimeException("Test Failed!"); 105 } 106 } 107 108 public static void main(String[] args) throws Exception { 109 if (!RsocketTest.isRsocketAvailable()) 110 return; 111 112 test(); 113 } 114 115 }