| /* EpollSelectionKeyImpl.java -- selection key for the epoll selector. |
| Copyright (C) 2006 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., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 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.io.IOException; |
| import java.nio.channels.CancelledKeyException; |
| import java.nio.channels.SelectableChannel; |
| import java.nio.channels.SelectionKey; |
| import java.nio.channels.Selector; |
| import java.nio.channels.spi.AbstractSelectionKey; |
| |
| /** |
| * @author Casey Marshall (csm@gnu.org) |
| */ |
| public class EpollSelectionKeyImpl extends AbstractSelectionKey |
| { |
| final int fd; |
| private final EpollSelectorImpl selector; |
| private final SelectableChannel channel; |
| int interestOps; |
| int selectedOps; |
| int key; |
| boolean valid; |
| boolean cancelled; |
| |
| EpollSelectionKeyImpl(EpollSelectorImpl selector, |
| SelectableChannel channel, int fd) |
| { |
| this.selector = selector; |
| this.channel = channel; |
| this.fd = fd; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.nio.channels.SelectionKey#channel() |
| */ |
| public SelectableChannel channel() |
| { |
| return channel; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.nio.channels.SelectionKey#interestOps() |
| */ |
| public int interestOps() |
| { |
| return interestOps; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.nio.channels.SelectionKey#interestOps(int) |
| */ |
| public SelectionKey interestOps(int ops) |
| { |
| if (cancelled) |
| throw new CancelledKeyException(); |
| if ((ops & ~(channel.validOps())) != 0) |
| throw new IllegalArgumentException("unsupported channel ops"); |
| try |
| { |
| selector.epoll_modify(this, ops); |
| interestOps = ops; |
| } |
| catch (IOException ioe) |
| { |
| throw new IllegalArgumentException(ioe); |
| } |
| return this; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.nio.channels.SelectionKey#readyOps() |
| */ |
| public int readyOps() |
| { |
| return selectedOps; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.nio.channels.SelectionKey#selector() |
| */ |
| public Selector selector() |
| { |
| return selector; |
| } |
| } |