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Diffstat (limited to 'gnu/java/nio/KqueueSelectionKeyImpl.java')
| -rw-r--r-- | gnu/java/nio/KqueueSelectionKeyImpl.java | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/gnu/java/nio/KqueueSelectionKeyImpl.java b/gnu/java/nio/KqueueSelectionKeyImpl.java new file mode 100644 index 000000000..9e5035eb4 --- /dev/null +++ b/gnu/java/nio/KqueueSelectionKeyImpl.java @@ -0,0 +1,175 @@ +/* KqueueSelectionKeyImpl.java -- selection key for kqueue/kevent. + 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.ByteBuffer; +import java.nio.channels.SelectableChannel; +import java.nio.channels.SelectionKey; +import java.nio.channels.Selector; + +/** + * @author Casey Marshall (csm@gnu.org) + */ +public class KqueueSelectionKeyImpl extends SelectionKey +{ + int interestOps; + int readyOps; + ByteBuffer nstate; + boolean valid; + int key; + boolean readEverEnabled = false; + boolean writeEverEnabled = false; + + /** The selector we were created for. */ + private final KqueueSelectorImpl selector; + + /** The channel we are attached to. */ + private final SelectableChannel channel; + + private final VMChannelOwner natChannel; + + public KqueueSelectionKeyImpl(KqueueSelectorImpl selector, + SelectableChannel channel) + { + this.selector = selector; + this.channel = channel; + natChannel = (VMChannelOwner) channel; + interestOps = 0; + readyOps = 0; + valid = true; + } + + /* (non-Javadoc) + * @see java.nio.channels.SelectionKey#cancel() + */ + //@Override + public void cancel() + { + selector.doCancel(this); + valid = false; + } + + /* (non-Javadoc) + * @see java.nio.channels.SelectionKey#channel() + */ + //@Override + public SelectableChannel channel() + { + return channel; + } + + /* (non-Javadoc) + * @see java.nio.channels.SelectionKey#interestOps() + */ + //@Override + public int interestOps() + { + return interestOps; + } + + /* (non-Javadoc) + * @see java.nio.channels.SelectionKey#interestOps(int) + */ + //@Override + public SelectionKey interestOps(int ops) + { + if (!isValid()) + throw new IllegalStateException(); + if ((ops & ~channel.validOps()) != 0) + throw new IllegalArgumentException(); + this.interestOps = ops; + try + { + selector.updateOps(this, + natChannel.getVMChannel().getState().getNativeFD(), + false); + } + catch (IOException ioe) + { + throw new IllegalStateException("channel is invalid"); + } + return this; + } + + /* (non-Javadoc) + * @see java.nio.channels.SelectionKey#isValid() + */ + //@Override + public boolean isValid() + { + return valid && selector.isOpen(); + } + + /* (non-Javadoc) + * @see java.nio.channels.SelectionKey#readyOps() + */ + //@Override + public int readyOps() + { + return readyOps; + } + + /* (non-Javadoc) + * @see java.nio.channels.SelectionKey#selector() + */ + //@Override + public Selector selector() + { + return selector; + } + + public String toString() + { + if (!isValid()) + return super.toString() + " [ <<invalid>> ]"; + return super.toString() + " [ interest ops: {" + + ((interestOps & OP_ACCEPT) != 0 ? " OP_ACCEPT" : "") + + ((interestOps & OP_CONNECT) != 0 ? " OP_CONNECT" : "") + + ((interestOps & OP_READ) != 0 ? " OP_READ" : "") + + ((interestOps & OP_WRITE) != 0 ? " OP_WRITE" : "") + + " }; ready ops: {" + + ((readyOps & OP_ACCEPT) != 0 ? " OP_ACCEPT" : "") + + ((readyOps & OP_CONNECT) != 0 ? " OP_CONNECT" : "") + + ((readyOps & OP_READ) != 0 ? " OP_READ" : "") + + ((readyOps & OP_WRITE) != 0 ? " OP_WRITE" : "") + + " } ]"; + } +} |