1 /* 2 * Copyright (c) 2001, 2002, 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.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 Alias { 38 39 static int success = 0; 40 static int LIMIT = 20; // Hangs after just 1 if problem is present 41 42 public static void main(String[] args) throws Exception { 43 test1(); 44 } 45 46 public static void test1() throws Exception { 47 Selector selector = SelectorProvider.provider().openSelector(); 48 InetAddress myAddress=InetAddress.getByName(TestUtil.HOST); 49 InetSocketAddress isa = new InetSocketAddress(myAddress,13); 50 51 for (int j=0; j<LIMIT; j++) { 52 SocketChannel sc = SocketChannel.open(); 53 sc.configureBlocking(false); 54 boolean result = sc.connect(isa); 55 if (!result) { 56 SelectionKey key = sc.register(selector, 57 SelectionKey.OP_CONNECT); 58 while (!result) { 59 int keysAdded = selector.select(100); 60 if (keysAdded > 0) { 61 Set readyKeys = selector.selectedKeys(); 62 Iterator i = readyKeys.iterator(); 63 while (i.hasNext()) { 64 SelectionKey sk = (SelectionKey)i.next(); 65 SocketChannel nextReady = 66 (SocketChannel)sk.channel(); 67 result = nextReady.finishConnect(); 68 } 69 } 70 } 71 key.cancel(); 72 } 73 read(sc); 74 } 75 selector.close(); 76 } 77 78 static void read(SocketChannel sc) throws Exception { 79 ByteBuffer bb = ByteBuffer.allocateDirect(100); 80 int n = 0; 81 while (n == 0) // Note this is not a rigorous check for done reading 82 n = sc.read(bb); 83 //bb.position(bb.position() - 2); 84 //bb.flip(); 85 //CharBuffer cb = Charset.forName("US-ASCII").newDecoder().decode(bb); 86 //System.out.println("Received: \"" + cb + "\""); 87 sc.close(); 88 success++; 89 } 90 }