diff -r 115e09b7a004 -r 3acf8e5e2ca0 jdk/src/solaris/classes/sun/nio/ch/Port.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/solaris/classes/sun/nio/ch/Port.java	Sun Feb 15 12:25:54 2009 +0000
@@ -0,0 +1,168 @@
+/*
+ * 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.spi.AsynchronousChannelProvider;
+import java.nio.channels.*;
+import java.io.IOException;
+import java.io.Closeable;
+import java.io.FileDescriptor;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.concurrent.locks.ReadWriteLock;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+/**
+ * Base implementation of AsynchronousChannelGroupImpl for Unix systems.
+ */
+
+abstract class Port extends AsynchronousChannelGroupImpl {
+    static final short POLLIN       = 0x0001;
+    static final short POLLOUT      = 0x0004;
+    static final short POLLERR      = 0x0008;
+    static final short POLLHUP      = 0x0010;
+
+    /**
+     * Implemented by clients registered with this port.
+     */
+    interface PollableChannel extends Closeable {
+        void onEvent(int events);
+    }
+
+    // maps fd to "pollable" channel
+    protected final ReadWriteLock fdToChannelLock = new ReentrantReadWriteLock();
+    protected final Map<Integer,PollableChannel> fdToChannel =
+        new HashMap<Integer,PollableChannel>();
+
+
+    Port(AsynchronousChannelProvider provider, ThreadPool pool) {
+        super(provider, pool);
+    }
+
+    /**
+     * Register channel identified by its file descriptor
+     */
+    final void register(int fd, PollableChannel ch) {
+        fdToChannelLock.writeLock().lock();
+        try {
+            if (isShutdown())
+                throw new ShutdownChannelGroupException();
+            fdToChannel.put(Integer.valueOf(fd), ch);
+        } finally {
+            fdToChannelLock.writeLock().unlock();
+        }
+    }
+
+    /**
+     * Unregister channel identified by its file descriptor
+     */
+    final void unregister(int fd) {
+        boolean checkForShutdown = false;
+
+        fdToChannelLock.writeLock().lock();
+        try {
+            fdToChannel.remove(Integer.valueOf(fd));
+
+            // last key to be removed so check if group is shutdown
+            if (fdToChannel.isEmpty())
+                checkForShutdown = true;
+
+        } finally {
+            fdToChannelLock.writeLock().unlock();
+        }
+
+        // continue shutdown
+        if (checkForShutdown && isShutdown()) {
+            try {
+                shutdownNow();
+            } catch (IOException ignore) { }
+        }
+    }
+    /**
+     * Register file descriptor with polling mechanism for given events.
+     * The implementation should translate the events as required.
+     */
+    abstract void startPoll(int fd, int events);
+
+    @Override
+    final boolean isEmpty() {
+        fdToChannelLock.writeLock().lock();
+        try {
+            return fdToChannel.isEmpty();
+        } finally {
+            fdToChannelLock.writeLock().unlock();
+        }
+    }
+
+    @Override
+    final Object attachForeignChannel(final Channel channel, FileDescriptor fd) {
+        int fdVal = IOUtil.fdVal(fd);
+        register(fdVal, new PollableChannel() {
+            public void onEvent(int events) { }
+            public void close() throws IOException {
+                channel.close();
+            }
+        });
+        return Integer.valueOf(fdVal);
+    }
+
+    @Override
+    final void detachForeignChannel(Object key) {
+        unregister((Integer)key);
+    }
+
+    @Override
+    final void closeAllChannels() {
+        /**
+         * Close channels in batches of up to 128 channels. This allows close
+         * to remove the channel from the map without interference.
+         */
+        final int MAX_BATCH_SIZE = 128;
+        PollableChannel channels[] = new PollableChannel[MAX_BATCH_SIZE];
+        int count;
+        do {
+            // grab a batch of up to 128 channels
+            fdToChannelLock.writeLock().lock();
+            count = 0;
+            try {
+                for (Integer fd: fdToChannel.keySet()) {
+                    channels[count++] = fdToChannel.get(fd);
+                    if (count >= MAX_BATCH_SIZE)
+                        break;
+                }
+            } finally {
+                fdToChannelLock.writeLock().unlock();
+            }
+
+            // close them
+            for (int i=0; i<count; i++) {
+                try {
+                    channels[i].close();
+                } catch (IOException ignore) { }
+            }
+        } while (count > 0);
+    }
+}