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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2008-2015 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
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* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.pdd.pop.ext.glassfish.grizzly.nio;
import java.io.IOException;
import java.nio.channels.SelectableChannel;
import java.nio.channels.SelectionKey;
import java.util.Set;
import com.pdd.pop.ext.glassfish.grizzly.CompletionHandler;
/**
*
* @author Alexey Stashok
*/
public interface SelectorHandler {
/**
* The default {@link SelectorHandler} used by all created builder instances.
*/
SelectorHandler DEFAULT_SELECTOR_HANDLER = new DefaultSelectorHandler();
long getSelectTimeout();
boolean preSelect(SelectorRunner selectorRunner) throws IOException;
Set select(SelectorRunner selectorRunner) throws IOException;
void postSelect(SelectorRunner selectorRunner) throws IOException;
void registerKeyInterest(SelectorRunner selectorRunner,
SelectionKey key,
int interest)
throws IOException;
/**
* Deregisters SelectionKey interest.
*
* This method must be called from the SelectorRunner's thread only!
* @throws IOException
*/
void deregisterKeyInterest(SelectorRunner selectorRunner,
SelectionKey key,
int interest)
throws IOException;
void registerChannel(SelectorRunner selectorRunner,
SelectableChannel channel,
int interest,
Object attachment)
throws IOException;
void registerChannelAsync(
SelectorRunner selectorRunner,
SelectableChannel channel,
int interest,
Object attachment,
CompletionHandler completionHandler);
/**
* Deregister the channel from the {@link SelectorRunner}'s Selector.
* @param selectorRunner {@link SelectorRunner}
* @param channel {@link SelectableChannel} channel to deregister
* @throws IOException
*/
void deregisterChannel(SelectorRunner selectorRunner,
SelectableChannel channel) throws IOException;
/**
* Deregister the channel from the {@link SelectorRunner}'s Selector.
* @param selectorRunner {@link SelectorRunner}
* @param channel {@link SelectableChannel} channel to deregister
* @param completionHandler {@link CompletionHandler}
*/
void deregisterChannelAsync(
SelectorRunner selectorRunner,
SelectableChannel channel,
CompletionHandler completionHandler);
/**
* Execute task in a selector thread.
* Unlike {@link #enque(com.pdd.pop.ext.glassfish.grizzly.nio.SelectorRunner, com.pdd.pop.ext.glassfish.grizzly.nio.SelectorHandler.Task, com.pdd.pop.ext.glassfish.grizzly.CompletionHandler)},
* this operation will execute the task immediately if the current
* is a selector thread.
*
* @param selectorRunner
* @param task
* @param completionHandler
*/
void execute(
final SelectorRunner selectorRunner,
final Task task,
final CompletionHandler completionHandler);
/**
* Execute task in a selector thread.
* Unlike {@link #execute(com.pdd.pop.ext.glassfish.grizzly.nio.SelectorRunner, com.pdd.pop.ext.glassfish.grizzly.nio.SelectorHandler.Task, com.pdd.pop.ext.glassfish.grizzly.CompletionHandler)},
* this operation will postpone the task execution if current thread
* is a selector thread, and execute it during the next
* {@link #select(com.pdd.pop.ext.glassfish.grizzly.nio.SelectorRunner)} iteration.
*
* @param selectorRunner
* @param task
* @param completionHandler
*/
void enque(
final SelectorRunner selectorRunner,
final Task task,
final CompletionHandler completionHandler);
boolean onSelectorClosed(SelectorRunner selectorRunner);
interface Task {
boolean run() throws Exception;
}
}
