AIOContextTask.java

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package com.sun.grizzly.aio;

import com.sun.grizzly.Context;
import com.sun.grizzly.ContextTask;
import com.sun.grizzly.ProtocolChain;
import com.sun.grizzly.util.ByteBufferFactory.ByteBufferType;
import com.sun.grizzly.util.DefaultThreadPool;
import com.sun.grizzly.util.WorkerThread;
import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousSocketChannel;
import java.util.concurrent.TimeUnit;

/**
 * {@link ProtocolChain} task, which will be executed by 
 * {@link Context}, when Context.execute({@link ContextTask}) 
 * is called.
 * 
 * @author Jeanfrancois Arcand
 */
public class AIOContextTask extends ContextTask {

    public Object call() throws Exception {
        final WorkerThread workerThread = ((WorkerThread) Thread.currentThread());
        AIOContext ctx = (AIOContext)context;
        AsynchronousSocketChannel channel = ctx.getChannel();
        ByteBuffer buffer = workerThread.getByteBuffer();
        ByteBuffer bb = ctx.getByteBuffer();
        
        if (bb == null && buffer != null){
            bb = buffer;
            workerThread.setByteBuffer(null);
        } else if (bb == null && buffer == null){
            int size = 8192;
            ByteBufferType bbt = ByteBufferType.DIRECT;
            if (ctx.getThreadPool() instanceof DefaultThreadPool){
                size = ((DefaultThreadPool)ctx.getThreadPool() )
                        .getInitialByteBufferSize();
                bbt = ((DefaultThreadPool)ctx.getThreadPool() )
                        .getByteBufferType();
            }
            bb = ByteBuffer.allocateDirect(size);
        }
        ctx.setByteBuffer(bb);

        channel.read(bb, (Long)ctx.getAttribute("timeout"), TimeUnit.SECONDS,
                null, ctx);
       
        return null;
    }


}