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 4513011 26 * @summary Registering and cancelling same fd many times 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 Alias { 37 38 static int success = 0; 39 static int LIMIT = 20; // Hangs after just 1 if problem is present 40 41 public static void main(String[] args) throws Exception { 42 try (TestUtil.DayTimeServer daytimeServer = 43 TestUtil.DayTimeServer.startNewServer(100)) { 44 test1(daytimeServer); 45 } 46 } 47 48 static void test1(TestUtil.DayTimeServer daytimeServer) 49 throws Exception { 50 Selector selector = SelectorProvider.provider().openSelector(); 51 InetAddress myAddress = daytimeServer.getAddress(); 52 InetSocketAddress isa = 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 result = sc.connect(isa); 58 59 // On solaris - given that we're using a local server, 60 // we probably no longer enter into the if () { 61 // statement below... 62 if (!result) { 63 SelectionKey key = sc.register(selector, 64 SelectionKey.OP_CONNECT); 65 while (!result) { 66 int keysAdded = selector.select(100); 67 if (keysAdded > 0) { 68 Set readyKeys = selector.selectedKeys(); 69 Iterator i = readyKeys.iterator(); 70 while (i.hasNext()) { 71 SelectionKey sk = (SelectionKey)i.next(); 72 SocketChannel nextReady = 73 (SocketChannel)sk.channel(); 74 result = nextReady.finishConnect(); 75 } 76 } 77 } 78 key.cancel(); 79 } else { 80 System.err.println("Can't fully test on " 81 + System.getProperty("os.name")); 82 } 83 read(sc); 84 } 85 selector.close(); 86 } 87 88 static void read(SocketChannel sc) throws Exception { 89 ByteBuffer bb = ByteBuffer.allocateDirect(100); 90 int n = 0; 91 while (n == 0) // Note this is not a rigorous check for done reading 92 n = sc.read(bb); 93 //bb.position(bb.position() - 2); 94 //bb.flip(); 95 //CharBuffer cb = Charset.forName("US-ASCII").newDecoder().decode(bb); 96 //System.out.println("Received: \"" + cb + "\""); 97 sc.close(); 98 success++; 99 } 100 }