--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/nio/ch/CompletedFuture.java	Sun Feb 15 12:25:54 2009 +0000
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2008-2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.nio.ch;
+
+import java.nio.channels.AsynchronousChannel;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.ExecutionException;
+import java.io.IOException;
+
+/**
+ * A Future representing the result of an I/O operation that has already
+ * completed.
+ */
+
+final class CompletedFuture<V,A>
+    extends AbstractFuture<V,A>
+{
+    private final V result;
+    private final Throwable exc;
+
+    private CompletedFuture(AsynchronousChannel channel,
+                            V result,
+                            Throwable exc,
+                            A attachment)
+    {
+        super(channel, attachment);
+        this.result = result;
+        this.exc = exc;
+    }
+
+    @SuppressWarnings("unchecked")
+    static <V,A> CompletedFuture<V,A> withResult(AsynchronousChannel channel,
+                                                 V result,
+                                                 A attachment)
+    {
+        return new CompletedFuture<V,A>(channel, result, null, attachment);
+    }
+
+    @SuppressWarnings("unchecked")
+    static <V,A> CompletedFuture<V,A> withFailure(AsynchronousChannel channel,
+                                                  Throwable exc,
+                                                  A attachment)
+    {
+        // exception must be IOException or SecurityException
+        if (!(exc instanceof IOException) && !(exc instanceof SecurityException))
+            exc = new IOException(exc);
+        return new CompletedFuture(channel, null, exc, attachment);
+    }
+
+    @Override
+    public V get() throws ExecutionException {
+        if (exc != null)
+            throw new ExecutionException(exc);
+        return result;
+    }
+
+    @Override
+    public V get(long timeout, TimeUnit unit) throws ExecutionException {
+        if (unit == null)
+            throw new NullPointerException();
+        if (exc != null)
+            throw new ExecutionException(exc);
+        return result;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return false;
+    }
+
+    @Override
+    public boolean isDone() {
+        return true;
+    }
+
+    @Override
+    public boolean cancel(boolean mayInterruptIfRunning) {
+        return false;
+    }
+
+    @Override
+    Throwable exception() {
+        return exc;
+    }
+
+    @Override
+    V value() {
+        return result;
+    }
+}