1 /*
   2  * Copyright (c) 2001, 2010, 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
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  22  */
  23 
  24 /* @test
  25  * @bug 4511624
  26  * @summary Test Making lots of Selectors
  27  * @library ..
  28  */
  29 
  30 import java.io.*;
  31 import java.net.*;
  32 import java.nio.*;
  33 import java.nio.channels.*;
  34 import java.util.*;
  35 import java.nio.channels.spi.SelectorProvider;
  36 
  37 public class Connect {
  38 
  39     static int success = 0;
  40     static int LIMIT = 100;
  41 
  42     public static void main(String[] args) throws Exception {
  43         scaleTest();
  44     }
  45 
  46     public static void scaleTest() throws Exception {
  47         InetAddress myAddress=InetAddress.getByName(TestUtil.HOST);
  48         InetSocketAddress isa = new InetSocketAddress(myAddress,13);
  49 
  50         for (int j=0; j<LIMIT; j++) {
  51             SocketChannel sc = SocketChannel.open();
  52             sc.configureBlocking(false);
  53             boolean connected = sc.connect(isa);
  54             if (!connected) {
  55                 Selector RSelector = SelectorProvider.provider().openSelector();
  56                 SelectionKey RKey = sc.register (RSelector, SelectionKey.OP_CONNECT);
  57                 while (!connected) {
  58                     int keysAdded = RSelector.select(100);
  59                     if (keysAdded > 0) {
  60                         Set<SelectionKey> readyKeys = RSelector.selectedKeys();
  61                         Iterator<SelectionKey> i = readyKeys.iterator();
  62                         while (i.hasNext()) {
  63                             SelectionKey sk = i.next();
  64                             SocketChannel nextReady = (SocketChannel)sk.channel();
  65                             connected = nextReady.finishConnect();
  66                         }
  67                         readyKeys.clear();
  68                     }
  69                 }
  70                 RSelector.close();
  71             }
  72             readAndClose(sc);
  73         }
  74     }
  75 
  76     static void readAndClose(SocketChannel sc) throws Exception {
  77         ByteBuffer bb = ByteBuffer.allocateDirect(100);
  78         int n = 0;
  79         while (n == 0) // Note this is not a rigorous check for done reading
  80             n = sc.read(bb);
  81         //bb.position(bb.position() - 2);
  82         //bb.flip();
  83         //CharBuffer cb = Charset.forName("US-ASCII").newDecoder().decode(bb);
  84         //System.out.println("Received: \"" + cb + "\"");
  85         sc.close();
  86         success++;
  87     }
  88 }