4e3cb200a5
* java/nio/channels/spi/AbstractSelectableChannel.java (registered): Made private. (blocking): Likewise. (LOCK): Likewise. (provider): Likewise. (keys): Made it a private LinkedList. (AbstractSelectableChannel): Initialize keys. (isRegistered): New implementation. (locate): Rewritten. (register): Rewritten. * java/nio/channels/spi/AbstractSelectionKey.java (ok): Removed. (cancelled): New member variable. (cancel): Rewritten. (isValid): Rewritten. * java/nio/channels/spi/AbstractSelector.java: Some methods moved. (closed): Make private. (provider): Likewise. (cancelledKeys): New member variable. (AbstractSelector): Initialize cancelledKeys. (cancelKey): New method. From-SVN: r72275
125 lines
3.4 KiB
Java
125 lines
3.4 KiB
Java
/* AbstractSelector.java --
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Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.nio.channels.spi;
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import java.io.IOException;
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import java.nio.channels.SelectionKey;
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import java.nio.channels.Selector;
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import java.util.Set;
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import java.util.HashSet;
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public abstract class AbstractSelector extends Selector
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{
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private boolean closed = false;
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private SelectorProvider provider;
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private HashSet cancelledKeys;
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/**
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* Initializes the slector.
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*/
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protected AbstractSelector (SelectorProvider provider)
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{
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this.provider = provider;
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this.cancelledKeys = new HashSet();
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}
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/**
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* Closes the channel.
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*
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* @exception IOException If an error occurs
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*/
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public final void close () throws IOException
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{
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if (closed)
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return;
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implCloseSelector();
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closed = true;
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}
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/**
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* Tells whether this channel is open or not.
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*/
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public final boolean isOpen ()
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{
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return ! closed;
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}
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/**
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* Marks the beginning of an I/O operation that might block indefinitely.
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*/
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protected final void begin()
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{
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}
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/**
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* Marks the end of an I/O operation that might block indefinitely.
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*/
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protected final void end()
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{
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}
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public final SelectorProvider provider ()
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{
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return provider;
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}
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protected final Set cancelledKeys()
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{
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return cancelledKeys;
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}
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final void cancelKey (AbstractSelectionKey key)
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{
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cancelledKeys.remove (key);
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}
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/**
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* Closes the channel.
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*/
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protected abstract void implCloseSelector () throws IOException;
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protected abstract SelectionKey register (AbstractSelectableChannel ch,
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int ops, Object att);
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protected final void deregister (AbstractSelectionKey key)
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{
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// FIXME
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}
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}
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