1 /*
   2  * Copyright (c) 2002, 2012, 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 4530007
  26  * @summary Test if keys reported ready multiple times
  27  * @library ..
  28  */
  29 
  30 import java.net.*;
  31 import java.nio.channels.*;
  32 import java.nio.channels.spi.SelectorProvider;
  33 
  34 public class KeysReady {
  35 
  36     static void test(TestClass.DayTimeServer dayTimeServer) throws Exception {
  37         InetSocketAddress isa
  38             = new InetSocketAddress(dayTimeServer.getAddress(),
  39                                     dayTimeServer.getPort());
  40         SocketChannel sc = SocketChannel.open();
  41         sc.configureBlocking(false);
  42         sc.connect(isa);
  43 
  44         // Prepare a selector
  45         Selector selector = SelectorProvider.provider().openSelector();
  46         try {
  47             SelectionKey key = sc.register(selector, SelectionKey.OP_CONNECT);
  48             int keysAdded = selector.select();
  49             if (keysAdded > 0) {
  50                 keysAdded = selector.select(1000);
  51                 if (keysAdded > 0)
  52                     throw new Exception("Same key reported added twice");
  53             }
  54         } finally {
  55             selector.close();
  56             sc.close();
  57         }
  58     }
  59 
  60     public static void main(String[] args) throws Exception {
  61         try (TestClass.DayTimeServer daytimeServer
  62                 = TestClass.DayTimeServer.startNewServer(50)) {
  63             test(daytimeServer);
  64         }
  65     }
  66 
  67 }