J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * |
| 8 | * - Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * - Neither the name of Sun Microsystems nor the names of its |
| 16 | * contributors may be used to endorse or promote products derived |
| 17 | * from this software without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | import java.io.*; |
| 33 | import java.nio.channels.*; |
| 34 | import java.util.*; |
| 35 | |
| 36 | /** |
| 37 | * A single-threaded dispatcher. |
| 38 | * <P> |
| 39 | * When a SelectionKey is ready, it dispatches the job in this |
| 40 | * thread. |
| 41 | * |
| 42 | * @author Mark Reinhold |
| 43 | * @author Brad R. Wetmore |
| 44 | */ |
| 45 | class Dispatcher1 implements Dispatcher { |
| 46 | |
| 47 | private Selector sel; |
| 48 | |
| 49 | Dispatcher1() throws IOException { |
| 50 | sel = Selector.open(); |
| 51 | } |
| 52 | |
| 53 | // Doesn't really need to be runnable |
| 54 | public void run() { |
| 55 | for (;;) { |
| 56 | try { |
| 57 | dispatch(); |
| 58 | } catch (IOException x) { |
| 59 | x.printStackTrace(); |
| 60 | } |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | private void dispatch() throws IOException { |
| 65 | sel.select(); |
| 66 | for (Iterator i = sel.selectedKeys().iterator(); i.hasNext(); ) { |
| 67 | SelectionKey sk = (SelectionKey)i.next(); |
| 68 | i.remove(); |
| 69 | Handler h = (Handler)sk.attachment(); |
| 70 | h.handle(sk); |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | public void register(SelectableChannel ch, int ops, Handler h) |
| 75 | throws IOException { |
| 76 | ch.register(sel, ops, h); |
| 77 | } |
| 78 | } |