1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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   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
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  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
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  22  */
  23 
  24 /* @test
  25  * @bug 8195160
  26  * @summary Test if keys reported ready multiple times
  27  * @requires (os.family == "linux")
  28  * @library .. /test/lib
  29  * @build jdk.test.lib.Utils TestServers
  30  * @build RsocketTest
  31  * @run main/othervm -Djava.net.preferIPv4Stack=true KeysReady
  32  */
  33 
  34 import java.net.*;
  35 import java.nio.channels.*;
  36 import java.nio.channels.spi.SelectorProvider;
  37 import jdk.net.Sockets;
  38 
  39 public class KeysReady {
  40 
  41     static void test(TestServers.DayTimeServer dayTimeServer) throws Exception {
  42         InetSocketAddress isa
  43             = new InetSocketAddress(dayTimeServer.getAddress(),
  44                                     dayTimeServer.getPort());
  45         SocketChannel sc = Sockets.openRdmaSocketChannel();
  46         sc.configureBlocking(false);
  47         sc.connect(isa);
  48 
  49         // Prepare a selector
  50         Selector selector = Sockets.openRdmaSelector();
  51         try {
  52             SelectionKey key = sc.register(selector, SelectionKey.OP_CONNECT);
  53             int keysAdded = selector.select();
  54             if (keysAdded > 0) {
  55                 keysAdded = selector.select(1000);
  56                 if (keysAdded > 0)
  57                     throw new Exception("Same key reported added twice");
  58             }
  59         } finally {
  60             selector.close();
  61             sc.close();
  62         }
  63     }
  64 
  65     public static void main(String[] args) throws Exception {
  66         if (!RsocketTest.isRsocketAvailable())
  67             return;
  68 
  69         try (TestServers.DayTimeServer daytimeServer
  70                 = TestServers.DayTimeServer.startNewServer(50)) {
  71             test(daytimeServer);
  72         }
  73     }
  74 
  75 }