1 files changed, 100 insertions, 0 deletions
diff --git a/libjava/java/nio/channels/spi/AbstractSelector.java b/libjava/java/nio/channels/spi/AbstractSelector.java
new file mode 100644
index 00000000000..033a8d7f98b
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+++ b/libjava/java/nio/channels/spi/AbstractSelector.java
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+/* AbstractSelector.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 java.nio.channels.spi;
+
+import java.nio.channels.SelectionKey;
+import java.nio.channels.Selector;
+import java.util.List;
+import java.util.Set;
+
+public abstract class AbstractSelector extends Selector
+{
+  boolean closed = true;
+  SelectorProvider provider;
+
+  protected AbstractSelector(SelectorProvider provider)
+  {
+    this.provider = provider;
+  }
+ 
+  protected final void begin()
+  {
+  }
+
+  /**
+   * @exception IOException If an error occurs
+   */
+  public final void close()
+  {
+    if (closed)
+      return;
+    closed = true;
+    implCloseSelector();
+  }
+
+  protected final void deregister(AbstractSelectionKey key)
+  {
+    cancelledKeys().remove(key);
+  }
+    
+  protected final void end()
+  {
+  }
+    
+  public final boolean isOpen()
+  {
+    return ! closed;
+  }
+    
+  public final SelectorProvider provider()
+  {
+    return provider;
+  }
+    
+  protected final Set cancelledKeys()
+  {
+    return null;
+  }
+  
+  /**
+   * @exception IOException If an error occurs
+   */
+  protected abstract void implCloseSelector();	
+  
+  protected abstract SelectionKey register(AbstractSelectableChannel ch, int ops, Object att);   
+}