com.sun.grizzly.async.AsyncQueueWriterContextTask Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of grizzly-module
Grizzly HTTP/Comet Module for GlassFish v3
There is a newer version: 10.0-b28
/*
 * 
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 2007-2008 Sun Microsystems, Inc. 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.html
 * or glassfish/bootstrap/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 glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * 
 * 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.sun.grizzly.async;

import com.sun.grizzly.SelectionKeyContextTask;
import java.nio.channels.SelectionKey;



/**
 * {@link AsyncQueueWriter} task, which will be executed by 
 * {@link Context}, when Context.execute({@link ContextTask}) 
 * is called.
 * 
 * @author Alexey Stashok
 */
public class AsyncQueueWriterContextTask extends SelectionKeyContextTask {
    private static final TaskPool taskPool =
            new TaskPool() {
        @Override
        public AsyncQueueWriterContextTask newInstance() {
            return new AsyncQueueWriterContextTask();
        }
    };
    
    private AsyncQueueWriter asyncQueueWriter;

    public static AsyncQueueWriterContextTask poll() {
        return taskPool.poll();
    }
    
    public static void offer(AsyncQueueWriterContextTask contextTask) {
        taskPool.offer(contextTask);
    }

    @Override
    protected void afterCall() {
    }

    @Override
    protected void beforeCall() {
    }

    protected Object doCall() throws Exception {
        SelectionKey selectionKey = context.getSelectionKey();
        if (selectionKey == null) {
            throw new IllegalStateException("SelectionKey could not be null!");
        }

        asyncQueueWriter.onWrite(selectionKey);
        
        return null;
    }

    public AsyncQueueWriter getAsyncQueueWriter() {
        return asyncQueueWriter;
    }

    public void setAsyncQueueWriter(AsyncQueueWriter asyncWriter) {
        this.asyncQueueWriter = asyncWriter;
    }

    @Override
    public void recycle() {
        asyncQueueWriter = null;
        super.recycle();
    }

    @Override
    public void offer() {
        offer(this);
    }
}