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java.nio.channels.spi

Class AbstractSelector

Known Direct Subclasses:
EpollSelectorImpl, KqueueSelectorImpl, SelectorImpl
public abstract class AbstractSelector
extends Selector

Constructor Summary

AbstractSelector(SelectorProvider provider)
Initializes the slector.

Method Summary

protected void
begin()
Marks the beginning of an I/O operation that might block indefinitely.
protected Set
cancelledKeys()
Returns the cancelled keys set.
void
close()
Closes the channel.
protected void
deregister(AbstractSelectionKey key)
Deregisters the given selection key.
protected void
end()
Marks the end of an I/O operation that might block indefinitely.
protected abstract void
implCloseSelector()
Closes the channel.
boolean
isOpen()
Tells whether this channel is open or not.
SelectorProvider
provider()
Returns the provider for this selector object.
protected abstract SelectionKey
register(AbstractSelectableChannel ch, int ops, Object att)
Registers a channel for the selection process.

Methods inherited from class java.nio.channels.Selector

close, isOpen, keys, open, provider, select, select, selectNow, selectedKeys, wakeup

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

AbstractSelector

protected AbstractSelector(SelectorProvider provider)
Initializes the slector.
Parameters:
provider - the provider that created this selector

Method Details

begin

protected final void begin()
Marks the beginning of an I/O operation that might block indefinitely.

cancelledKeys

protected final Set cancelledKeys()
Returns the cancelled keys set.
Returns:
the cancelled keys set

close

public final void close()
            throws IOException
Closes the channel.
Overrides:
close in interface Selector
Throws:
IOException - If an error occurs

deregister

protected final void deregister(AbstractSelectionKey key)
Deregisters the given selection key.
Parameters:
key - the key to deregister

end

protected final void end()
Marks the end of an I/O operation that might block indefinitely.

implCloseSelector

protected abstract void implCloseSelector()
            throws IOException
Closes the channel.
Throws:
IOException - if an error occurs

isOpen

public final boolean isOpen()
Tells whether this channel is open or not.
Overrides:
isOpen in interface Selector
Returns:
true if channel is open, false otherwise.

provider

public final SelectorProvider provider()
Returns the provider for this selector object.
Overrides:
provider in interface Selector
Returns:
the SelectorProvider object that created this seletor

register

protected abstract SelectionKey register(AbstractSelectableChannel ch,
                                         int ops,
                                         Object att)
Registers a channel for the selection process.
Parameters:
ch - the channel register
ops - the interested operations
att - an attachement to the selection key
Returns:
the registered selection key
AbstractSelector.java -- Copyright (C) 2002, 2003, 2004, 2005 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.

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