Examples of java.util.concurrent.ArrayBlockingQueue$Itr

java.util.concurrent.ArrayBlockingQueue
Iterator for ArrayBlockingQueue. To maintain weak consistency with respect to puts and takes, we read ahead one slot, so as to not report hasNext true but then not have an element to return. We switch into "detached" mode (allowing prompt unlinking from itrs without help from the GC) when all indices are negative, or when hasNext returns false for the first time. This allows the iterator to track concurrent updates completely accurately, except for the corner case of the user calling Iterator.remove() after hasNext() returned false. Even in this case, we ensure that we don't remove the wrong element by keeping track of the expected element to remove, in lastItem. Yes, we may fail to remove lastItem from the queue if it moved due to an interleaved interior remove while in detached mode.

        this.useBatch = pipeline.getParameters().isUseBatch();
    }


    public void afterPropertiesSet() throws Exception {
        executor = new ThreadPoolExecutor(poolSize, poolSize, 0L, TimeUnit.MILLISECONDS,
                                          new ArrayBlockingQueue(poolSize * 4), new NamedThreadFactory(WORKER_NAME),
                                          new ThreadPoolExecutor.CallerRunsPolicy());
    }

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    private BlockingQueue<?> getBlockingQueue(int acceptCount, HandleMode mode) {
        if (acceptCount < 0) {
            return new LinkedBlockingQueue();
        } else if (acceptCount == 0) {
            return new ArrayBlockingQueue(1); // 等于0时等价于队列1
        } else {
            return new ArrayBlockingQueue(acceptCount);
        }
    }

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        }
    }


    public void afterPropertiesSet() throws Exception {
        executor = new ThreadPoolExecutor(poolSize, poolSize, 0L, TimeUnit.MILLISECONDS,
                                          new ArrayBlockingQueue(poolSize * 4), new NamedThreadFactory(WORKER_NAME),
                                          new ThreadPoolExecutor.CallerRunsPolicy());
    }

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    public void afterPropertiesSet() throws Exception {
        executor = new ThreadPoolExecutor(poolSize,
            poolSize,
            0L,
            TimeUnit.MILLISECONDS,
            new ArrayBlockingQueue(poolSize * 4),
            new NamedThreadFactory(WORKER_NAME),
            new ThreadPoolExecutor.CallerRunsPolicy());
    }

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        }
    }


    public void afterPropertiesSet() throws Exception {
        executor = new ThreadPoolExecutor(poolSize, poolSize, 0L, TimeUnit.MILLISECONDS,
                                          new ArrayBlockingQueue(poolSize * 4), new NamedThreadFactory(WORKER_NAME),
                                          new ThreadPoolExecutor.CallerRunsPolicy());
    }

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    public void afterPropertiesSet() throws Exception {
        executor = new ThreadPoolExecutor(poolSize,
            poolSize,
            0L,
            TimeUnit.MILLISECONDS,
            new ArrayBlockingQueue(poolSize * 4),
            new NamedThreadFactory(WORKER_NAME),
            new ThreadPoolExecutor.CallerRunsPolicy());
    }

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    public void afterPropertiesSet() throws Exception {
        executor = new ThreadPoolExecutor(poolSize,
            poolSize,
            0L,
            TimeUnit.MILLISECONDS,
            new ArrayBlockingQueue(poolSize * 4),
            new NamedThreadFactory(WORKER_NAME),
            new ThreadPoolExecutor.CallerRunsPolicy());
    }

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    this( DEFAULT_BUFF_LENGHT, producersToWaitFor );
  }
  
  @SuppressWarnings("unchecked")
  public ProducerConsumerQueue( int queueLenght, int producersToWaitFor ) {
    queue = new ArrayBlockingQueue( queueLenght );
    this.producersToWaitFor = new AtomicInteger( producersToWaitFor );
  }

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    this( DEFAULT_BUFF_LENGHT, producersToWaitFor );
  }


  @SuppressWarnings("unchecked")
  public ProducerConsumerQueue( int queueLenght, int producersToWaitFor ) {
    queue = new ArrayBlockingQueue( queueLenght );
    this.producersToWaitFor = new AtomicInteger( producersToWaitFor );
  }

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    }


    public void afterPropertiesSet() throws Exception {
        if (executor == null) {// 初始化一个默认值
            executor = new ThreadPoolExecutor(poolSize, poolSize, 60, TimeUnit.SECONDS,
                                              new ArrayBlockingQueue(acceptCount), new NamedThreadFactory(name),
                                              new ThreadPoolExecutor.CallerRunsPolicy());
        }
    }

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