ByteBufferImpl.java, [...]: New files.

2002-11-18  Michael Koch <konqueror@gmx.de>

	* gnu/java/nio/ByteBufferImpl.java,
	gnu/java/nio/CharBufferImpl.java,
	gnu/java/nio/DatagramChannelImpl.java,
	gnu/java/nio/DoubleBufferImpl.java,
	gnu/java/nio/FileChannelImpl.java,
	gnu/java/nio/FloatBufferImpl.java,
	gnu/java/nio/IntBufferImpl.java,
	gnu/java/nio/LongBufferImpl.java,
	gnu/java/nio/PipeImpl.java,
	gnu/java/nio/SelectionKeyImpl.java,
	gnu/java/nio/SelectorImpl.java,
	gnu/java/nio/SelectorProviderImpl.java,
	gnu/java/nio/ServerSocketChannelImpl.java,
	gnu/java/nio/ShortBufferImpl.java,
	gnu/java/nio/SocketChannelImpl.java,
	java/nio/DoubleBuffer.java,
	java/nio/FloatBuffer.java,
	java/nio/IntBuffer.java,
	java/nio/LongBuffer.java,
	java/nio/ShortBuffer.java,
	java/nio/channels/FileChannel.java: New files.

From-SVN: r59216

libjava/gnu/java/nio/SelectorImpl.java

@@ -0,0 +1,204 @@
+/* SelectorImpl.java -- 
+   Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.nio.channels.ClosedSelectorException;
+import java.nio.channels.SelectableChannel;
+import java.nio.channels.SelectionKey;
+import java.nio.channels.Selector;
+import java.nio.channels.spi.AbstractSelectableChannel;
+import java.nio.channels.spi.AbstractSelector;
+import java.nio.channels.spi.SelectorProvider;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+
+public class SelectorImpl extends AbstractSelector
+{
+  boolean closed = false;
+  Set keys, selected, canceled;
+
+  public SelectorImpl (SelectorProvider provider)
+  {
+    super (provider);
+  }
+
+  public Set keys ()
+  {
+    return keys;
+  }
+    
+  public int selectNow ()
+  {
+    return select (1);
+  }
+
+  public int select ()
+  {
+    return select (Long.MAX_VALUE);
+  }
+
+//   private static native int java_do_select(int[] read, int[] write,
+//                                            int[] except, long timeout);
+
+  private static int java_do_select(int[] read, int[] write,
+                                    int[] except, long timeout)
+  {
+    return 0;
+  }
+
+  public int select (long timeout)
+  {
+    if (closed)
+      {
+        throw new ClosedSelectorException ();
+      }
+
+    if (keys == null)
+	    {
+        return 0;
+	    }
+
+    int[] read = new int[keys.size ()];
+    int[] write = new int[keys.size ()];
+    int[] except = new int[keys.size ()];
+    int i = 0;
+    Iterator it = keys.iterator ();
+
+    while (it.hasNext ())
+	    {
+        SelectionKeyImpl k = (SelectionKeyImpl) it.next ();
+        read[i] = k.fd;
+        write[i] = k.fd;
+        except[i] = k.fd;
+        i++;
+	    }
+
+    int ret = java_do_select (read, write, except, timeout);
+
+    i = 0;
+    it = keys.iterator ();
+
+    while (it.hasNext ())
+	    {
+        SelectionKeyImpl k = (SelectionKeyImpl) it.next ();
+
+        if (read[i] != -1 ||
+            write[i] != -1 ||
+            except[i] != -1)
+          {
+            add_selected (k);
+          }
+
+        i++;
+	    }
+
+    return ret;
+  }
+    
+  public Set selectedKeys ()
+  {
+    return selected;
+  }
+
+  public Selector wakeup ()
+  {
+    return null;
+  }
+
+  public void add (SelectionKeyImpl k)
+  {
+    if (keys == null)
+	    keys = new HashSet ();
+
+    keys.add (k);
+  }
+
+  void add_selected (SelectionKeyImpl k)
+  {
+    if (selected == null)
+	    selected = new HashSet ();
+
+    selected.add(k);
+  }
+
+  protected void implCloseSelector ()
+  {
+    closed = true;
+  }
+    
+  protected SelectionKey register (SelectableChannel ch, int ops, Object att)
+  {
+    return register ((AbstractSelectableChannel) ch, ops, att);
+  }
+
+  protected SelectionKey register (AbstractSelectableChannel ch, int ops,
+                                   Object att)
+  {
+// 	  // filechannel is not selectable ?
+//     if (ch instanceof FileChannelImpl)
+//       {
+//         FileChannelImpl fc = (FileChannelImpl) ch;
+//         SelectionKeyImpl impl = new SelectionKeyImpl (ch, this, fc.fd);
+//         keys.add (impl);
+//         return impl;
+//       }
+//     else
+	
+    if (ch instanceof SocketChannelImpl)
+	    {
+        SocketChannelImpl sc = (SocketChannelImpl) ch;
+        SelectionKeyImpl impl = new SelectionKeyImpl (ch, this, sc.fd);
+        add (impl);
+        return impl;
+	    }
+    else if (ch instanceof ServerSocketChannelImpl)
+      {
+        ServerSocketChannelImpl ssc = (ServerSocketChannelImpl) ch;
+        SelectionKeyImpl impl = new SelectionKeyImpl (ch, this, ssc.fd);
+        add (impl);
+        return impl;
+      }
+    else
+	    {
+        System.err.println ("INTERNAL ERROR, no known channel type");
+	    }
+
+    return null;
+  }
+}