1 /*
   2  * Copyright (c) 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 Test Making lots of Selectors
  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 Connect
  32  */
  33 
  34 import java.net.InetAddress;
  35 import java.net.InetSocketAddress;
  36 import java.nio.ByteBuffer;
  37 import java.nio.channels.SelectionKey;
  38 import java.nio.channels.Selector;
  39 import java.nio.channels.SocketChannel;
  40 import java.nio.channels.spi.SelectorProvider;
  41 import java.util.Iterator;
  42 import java.util.Set;
  43 import jdk.net.Sockets;
  44 
  45 public class Connect implements Runnable {
  46 
  47     static int success = 0;
  48     static int LIMIT = 30;
  49     static SocketChannel sc;
  50     static InetSocketAddress isa;
  51     static boolean connected;
  52     
  53     public static void main(String[] args) throws Exception {
  54         if (!RsocketTest.isRsocketAvailable())
  55             return;
  56 
  57         try (TestServers.DayTimeServer daytimeServer
  58                 = TestServers.DayTimeServer.startNewServer(50)) {
  59             scaleTest(daytimeServer);
  60         }
  61     }
  62 
  63     static void scaleTest(TestServers.DayTimeServer daytimeServer)
  64         throws Exception
  65     {
  66         InetAddress myAddress = daytimeServer.getAddress();
  67         isa = new InetSocketAddress(myAddress, daytimeServer.getPort());
  68 
  69         for (int j=0; j<LIMIT; j++) {
  70             sc = Sockets.openRdmaSocketChannel();
  71             sc.configureBlocking(false);
  72 
  73             Thread t = new Thread (new Connect());
  74             t.start();
  75             t.join();
  76             if (!connected) {
  77                 Selector RSelector = Sockets.openRdmaSelector();
  78                 SelectionKey RKey = sc.register (RSelector, SelectionKey.OP_CONNECT);
  79                 while (!connected) {
  80                     int keysAdded = RSelector.select(100);
  81                     if (keysAdded > 0) {
  82                         Set<SelectionKey> readyKeys = RSelector.selectedKeys();
  83                         Iterator<SelectionKey> i = readyKeys.iterator();
  84                         while (i.hasNext()) {
  85                             SelectionKey sk = i.next();
  86                             SocketChannel nextReady = (SocketChannel)sk.channel();
  87                             connected = nextReady.finishConnect();
  88                         }
  89                         readyKeys.clear();
  90                     }
  91                 }
  92                 RSelector.close();
  93             }
  94             readAndClose(sc);
  95         }
  96     }
  97 
  98     static void readAndClose(SocketChannel sc) throws Exception {
  99         ByteBuffer bb = ByteBuffer.allocateDirect(100);
 100         int n = 0;
 101         while (n == 0) // Note this is not a rigorous check for done reading
 102             n = sc.read(bb);
 103         sc.close();
 104         success++;
 105         System.out.println("success count = " + success);
 106     }
 107 
 108     public void run() {
 109         try {
 110             connected = sc.connect(isa);
 111             System.out.println("connected = " + connected);
 112         } catch (Exception e) {
 113             e.printStackTrace();
 114             throw new RuntimeException("Test Failed!");
 115         }
 116     }
 117 }