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 RdmaSocket with OP_WRITE would get selected only once 27 * @requires (os.family == "linux") 28 * @library .. /test/lib 29 * @build RsocketTest 30 * @run main/othervm -Djava.net.preferIPv4Stack=true SelectWrite 31 */ 32 33 import java.nio.channels.Selector; 34 import java.nio.channels.SelectionKey; 35 import java.nio.channels.SocketChannel; 36 import jdk.net.Sockets; 37 38 public class SelectWrite implements Runnable { 39 40 static SocketChannel sc; 41 static ByteServer server; 42 43 public static void main(String[] argv) throws Exception { 44 if (!RsocketTest.isRsocketAvailable()) 45 return; 46 47 try { 48 server = new ByteServer(); 49 sc = Sockets.openRdmaSocketChannel(); 50 51 Thread t = new Thread(new SelectWrite()); 52 t.start(); 53 54 server.acceptConnection(); 55 56 try (Selector sel = Sockets.openRdmaSelector()) { 57 sc.configureBlocking(false); 58 sc.register(sel, SelectionKey.OP_WRITE); 59 sel.select(); 60 sel.selectedKeys().clear(); 61 if (sel.select() == 0) { 62 throw new Exception("Select returned zero"); 63 } 64 } 65 } catch (Exception e) { 66 e.printStackTrace(); 67 throw new RuntimeException("Test Failed!"); 68 } 69 } 70 71 public void run() { 72 try { 73 sc.connect(server.address()); 74 } catch (Exception e) { 75 e.printStackTrace(); 76 throw new RuntimeException("Test Failed!"); 77 } 78 } 79 }