Initial revision

From-SVN: r102074

libjava/classpath/gnu/java/nio/ServerSocketChannelImpl.java

@@ -0,0 +1,124 @@
+/* ServerSocketChannelImpl.java -- 
+   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.java.nio;
+
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.net.SocketTimeoutException;
+import java.nio.channels.ClosedChannelException;
+import java.nio.channels.NotYetBoundException;
+import java.nio.channels.ServerSocketChannel;
+import java.nio.channels.SocketChannel;
+import java.nio.channels.spi.SelectorProvider;
+
+public final class ServerSocketChannelImpl extends ServerSocketChannel
+{
+  private NIOServerSocket serverSocket;
+  private boolean connected;
+
+  protected ServerSocketChannelImpl (SelectorProvider provider)
+    throws IOException
+  {
+    super (provider);
+    serverSocket = new NIOServerSocket (this);
+    configureBlocking(true);
+  }
+
+  public void finalizer()
+  {
+    if (connected)
+      {
+        try
+          {
+            close ();
+          }
+        catch (Exception e)
+          {
+          }
+      }
+  }
+
+  protected void implCloseSelectableChannel () throws IOException
+  {
+    connected = false;
+    serverSocket.close();
+  }
+
+  protected void implConfigureBlocking (boolean blocking) throws IOException
+  {
+    serverSocket.setSoTimeout (blocking ? 0 : NIOConstants.DEFAULT_TIMEOUT);
+  }
+
+  public SocketChannel accept () throws IOException
+  {
+    if (!isOpen())
+      throw new ClosedChannelException();
+
+    if (!serverSocket.isBound())
+      throw new NotYetBoundException();
+
+    boolean completed = false;
+    
+    try
+      {
+        begin();
+        serverSocket.getPlainSocketImpl().setInChannelOperation(true);
+          // indicate that a channel is initiating the accept operation
+          // so that the socket ignores the fact that we might be in
+          // non-blocking mode.
+        NIOSocket socket = (NIOSocket) serverSocket.accept();
+        completed = true;
+        return socket.getChannel();
+      }
+    catch (SocketTimeoutException e)
+      {
+        return null;
+      }
+    finally
+      {
+        serverSocket.getPlainSocketImpl().setInChannelOperation(false);
+        end (completed);
+      }
+  }
+
+  public ServerSocket socket ()
+  {
+    return serverSocket;
+  }
+}