1 /* ServerSocketChannelImpl.java -- 2 Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package gnu.java.nio; 40 41 import java.io.IOException; 42 import java.net.ServerSocket; 43 import java.nio.channels.ClosedChannelException; 44 import java.nio.channels.NotYetBoundException; 45 import java.nio.channels.ServerSocketChannel; 46 import java.nio.channels.SocketChannel; 47 import java.nio.channels.spi.SelectorProvider; 48 49 public final class ServerSocketChannelImpl extends ServerSocketChannel 50 implements VMChannelOwner 51 { 52 private VMChannel channel; 53 private NIOServerSocket serverSocket; 54 private boolean connected; 55 ServerSocketChannelImpl(SelectorProvider provider)56 protected ServerSocketChannelImpl (SelectorProvider provider) 57 throws IOException 58 { 59 super (provider); 60 serverSocket = new NIOServerSocket(this); 61 channel = serverSocket.getPlainSocketImpl().getVMChannel(); 62 configureBlocking(true); 63 } 64 65 // XXX do we need this? finalizer()66 public void finalizer() 67 { 68 if (channel.getState().isValid()) 69 { 70 try 71 { 72 close (); 73 } 74 catch (Exception e) 75 { 76 } 77 } 78 } 79 implCloseSelectableChannel()80 protected void implCloseSelectableChannel () throws IOException 81 { 82 connected = false; 83 channel.close(); 84 } 85 implConfigureBlocking(boolean blocking)86 protected void implConfigureBlocking (boolean blocking) throws IOException 87 { 88 channel.setBlocking(blocking); 89 } 90 accept()91 public SocketChannel accept () throws IOException 92 { 93 if (!isOpen()) 94 throw new ClosedChannelException(); 95 96 if (!serverSocket.isBound()) 97 throw new NotYetBoundException(); 98 99 boolean completed = false; 100 101 try 102 { 103 begin(); 104 VMChannel client = channel.accept(); 105 if (client == null) 106 return null; 107 else 108 { 109 completed = true; 110 return new SocketChannelImpl(provider(), client, false); 111 } 112 } 113 finally 114 { 115 end (completed); 116 } 117 } 118 socket()119 public ServerSocket socket() 120 { 121 return serverSocket; 122 } 123 getVMChannel()124 public VMChannel getVMChannel() 125 { 126 return channel; 127 } 128 } 129