Examples of edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue

Package edu.emory.mathcs.backport.java.util.concurrent

Examples of edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue

edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue
An optionally-bounded {@linkplain BlockingQueue blocking queue} based onlinked nodes. This queue orders elements FIFO (first-in-first-out). The head of the queue is that element that has been on the queue the longest time. The tail of the queue is that element that has been on the queue the shortest time. New elements are inserted at the tail of the queue, and the queue retrieval operations obtain elements at the head of the queue. Linked queues typically have higher throughput than array-based queues but less predictable performance in most concurrent applications.
The optional capacity bound constructor argument serves as a way to prevent excessive queue expansion. The capacity, if unspecified, is equal to {@link Integer#MAX_VALUE}. Linked nodes are dynamically created upon each insertion unless this would bring the queue above capacity.
This class and its iterator implement all of the optional methods of the {@link Collection} and {@link Iterator} interfaces.
This class is a member of the Java Collections Framework. @since 1.5 @author Doug Lea

    /**
     * Create the executor used to launch the single requestConnectionListener
     */
    public ExecutorService newListenerExecutor(int port) {
        return new ThreadPoolExecutor(1, 1, 0L, TimeUnit.MILLISECONDS,
                                      new LinkedBlockingQueue(),
                                      new DefaultThreadFactory(
                                              new ThreadGroup("Listener thread group"),
                                              "HttpListener-" + this.port));
    }

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    /**
     * Create the queue used to hold incoming requests when requestCoreThreadPoolSize threads are busy.
     * Default is an unbounded queue.
     */
    public BlockingQueue newRequestBlockingQueue() {
        return new LinkedBlockingQueue();
    }

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    public void start() throws AxisFault {
        // create thread pool of workers
        ExecutorService workerPool = new ThreadPoolExecutor(
                1,
                WORKERS_MAX_THREADS, WORKER_KEEP_ALIVE, TIME_UNIT,
                new LinkedBlockingQueue(),
                new org.apache.axis2.util.threadpool.DefaultThreadFactory(
                        new ThreadGroup("JMS Worker thread group"),
                        "JMSWorker"));


        Iterator iter = connectionFactories.values().iterator();

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     * Creates a new instace with the default thread pool implementation
     * (<tt>new ThreadPoolExecutor(16, 16, 60, TimeUnit.SECONDS, new LinkedBlockingQueue() )</tt>).
     */
    public ExecutorFilter() {
        this(new ThreadPoolExecutor(16, 16, 60, TimeUnit.SECONDS,
                new LinkedBlockingQueue()));
    }

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    }


    protected Object createInstance() throws Exception {
        BlockingQueue queue = null;
        if (queueCapacity > 0) {
            queue = new LinkedBlockingQueue(queueCapacity);
        } else {
            queue = new SynchronousQueue();
        }
        return new ThreadPoolExecutor(corePoolSize, maxPoolSize,
                keepAliveSeconds, TimeUnit.SECONDS, queue, threadFactory,

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    protected Object createInstance() throws Exception
    {
        BlockingQueue queue = null;
        if( queueCapacity > 0 ) 
        {
            queue = new LinkedBlockingQueue( queueCapacity );
        }
        else
        {
            queue = new SynchronousQueue();
        }

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     * Creates a new instace with the default thread pool implementation
     * (<tt>new ThreadPoolExecutor(16, 16, 60, TimeUnit.SECONDS, new LinkedBlockingQueue() )</tt>).
     */
    public ExecutorFilter()
    {
        this( new ThreadPoolExecutor(16, 16, 60, TimeUnit.SECONDS, new LinkedBlockingQueue() ) );
    }

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     * one.
     *
     * @param maxSize Maximum size of the work executor pool.
     */
    public WorkExecutorPoolImpl(int maxSize) {
        pooledExecutor = new ThreadPoolExecutor(1, maxSize, 1, TimeUnit.MINUTES, new LinkedBlockingQueue());
        /*


        FIXME: How to do this with concurrent.util ?
        pooledExecutor.waitWhenBlocked();
        */

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   * @see edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue
   * @see edu.emory.mathcs.backport.java.util.concurrent.SynchronousQueue
   */
  protected BlockingQueue createQueue(int queueCapacity) {
    if (queueCapacity > 0) {
      return new LinkedBlockingQueue(queueCapacity);
    }
    else {
      return new SynchronousQueue();
    }
  }

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        this.transport = transport;
        this.clientIdGenerator = clientIdGenerator;
        this.factoryStats = factoryStats;
        
        // Configure a single threaded executor who's core thread can timeout if idle
        asyncConnectionThread = new ThreadPoolExecutor(1,1,5,TimeUnit.SECONDS, new LinkedBlockingQueue(), new ThreadFactory() {
            public Thread newThread(Runnable r) {
                Thread thread = new Thread(r, "AcitveMQ Connection Worker: "+transport);
                thread.setDaemon(true);
                return thread;
            }});

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