1 /*
   2  * Copyright (c) 2001, 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 4511624
  26  * @summary Test Making lots of Selectors
  27  * @library ..
  28  */
  29 
  30 import java.net.*;
  31 import java.nio.*;
  32 import java.nio.channels.*;
  33 import java.nio.channels.spi.SelectorProvider;
  34 import java.util.*;
  35 
  36 public class Connect {
  37 
  38     static int success = 0;
  39     static int LIMIT = 100;
  40 
  41     public static void main(String[] args) throws Exception {
  42         try (TestUtil.DayTimeServer daytimeServer =
  43                         TestUtil.DayTimeServer.startNewServer(50)) {
  44             scaleTest(daytimeServer);
  45         }
  46     }
  47 
  48     static void scaleTest(TestUtil.DayTimeServer daytimeServer)
  49             throws Exception {
  50         InetAddress myAddress = daytimeServer.getAddress();
  51         InetSocketAddress isa =
  52                 new InetSocketAddress(myAddress, daytimeServer.getPort());
  53 
  54         for (int j=0; j<LIMIT; j++) {
  55             SocketChannel sc = SocketChannel.open();
  56             sc.configureBlocking(false);
  57             boolean connected = sc.connect(isa);
  58             if (!connected) {
  59                 Selector RSelector = SelectorProvider.provider().openSelector();
  60                 SelectionKey RKey = sc.register (RSelector, SelectionKey.OP_CONNECT);
  61                 while (!connected) {
  62                     int keysAdded = RSelector.select(100);
  63                     if (keysAdded > 0) {
  64                         Set<SelectionKey> readyKeys = RSelector.selectedKeys();
  65                         Iterator<SelectionKey> i = readyKeys.iterator();
  66                         while (i.hasNext()) {
  67                             SelectionKey sk = i.next();
  68                             SocketChannel nextReady = (SocketChannel)sk.channel();
  69                             connected = nextReady.finishConnect();
  70                         }
  71                         readyKeys.clear();
  72                     }
  73                 }
  74                 RSelector.close();
  75             }
  76             readAndClose(sc);
  77         }
  78     }
  79 
  80     static void readAndClose(SocketChannel sc) throws Exception {
  81         ByteBuffer bb = ByteBuffer.allocateDirect(100);
  82         int n = 0;
  83         while (n == 0) // Note this is not a rigorous check for done reading
  84             n = sc.read(bb);
  85         //bb.position(bb.position() - 2);
  86         //bb.flip();
  87         //CharBuffer cb = Charset.forName("US-ASCII").newDecoder().decode(bb);
  88         //System.out.println("Received: \"" + cb + "\"");
  89         sc.close();
  90         success++;
  91     }
  92 }