private final Condition notFull;
private final Condition notEmpty;

public ArrayBlockingQueue(int capacity, boolean fair) {
    //省略其他代码
    notEmpty = lock.newCondition();
    notFull = lock.newCondition();
  }

public void put(E e) throws InterruptedException {
    checkNotNull(e);
    final ReentrantLock lock = this.lock;
    lock.lockInterruptibly();
    try {
      while (count == items.length)
        notFull.await();
      insert(e);
    } finally {
      lock.unlock();
    }
}

public E take() throws InterruptedException {
    final ReentrantLock lock = this.lock;
    lock.lockInterruptibly();
    try {
      while (count == 0)
        notEmpty.await();
      return extract();
 } finally {
      lock.unlock();
    }
}

private void insert(E x) {
    items[putIndex] = x;
    putIndex = inc(putIndex);
    ++count;
    notEmpty.signal();
  }

public final void await() throws InterruptedException {
      if (Thread.interrupted())
        throw new InterruptedException();
      Node node = addConditionWaiter();
      int savedState = fullyRelease(node);
      int interruptMode = 0;
      while (!isOnSyncQueue(node)) {
        LockSupport.park(this);
        if ((interruptMode = checkInterruptWhileWaiting(node)) != 0)
          break;
      }
      if (acquireQueued(node, savedState) && interruptMode != THROW_IE)
        interruptMode = REINTERRUPT;
      if (node.nextWaiter != null) // clean up if cancelled
        unlinkCancelledWaiters();
      if (interruptMode != 0)

reportInterruptAfterWait(interruptMode);
    }

public static void park(Object blocker) {
    Thread t = Thread.currentThread();
    setBlocker(t, blocker);
    unsafe.park(false, 0L);
    setBlocker(t, null);
  }

public native void park(boolean isAbsolute, long time);

void os::PlatformEvent::park() {   
      int v ;
   for (;;) {
 v = _Event ;
   if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ;
   }
   guarantee (v >= 0, "invariant") ;
   if (v == 0) {
   // Do this the hard way by blocking ...
   int status = pthread_mutex_lock(_mutex);
   assert_status(status == 0, status, "mutex_lock");
   guarantee (_nParked == 0, "invariant") ;
   ++ _nParked ;
   while (_Event < 0) {
   status = pthread_cond_wait(_cond, _mutex);
   // for some reason, under 2.7 lwp_cond_wait() may return ETIME ...
   // Treat this the same as if the wait was interrupted
   if (status == ETIME) { status = EINTR; }
   assert_status(status == 0 || status == EINTR, status, "cond_wait");
   }
   -- _nParked ;
   
   // In theory we could move the ST of 0 into _Event past the unlock(),
   // but then we'd need a MEMBAR after the ST.
   _Event = 0 ;
   status = pthread_mutex_unlock(_mutex);
   assert_status(status == 0, status, "mutex_unlock");
   }
   guarantee (_Event >= 0, "invariant") ;
   }

   }

"main" prio=5 tid=0x00007fc83c000000 nid=0x10164e000 waiting on condition [0x000000010164d000]
  java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for <0x0000000140559fe8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
    at java.util.concurrent.ArrayBlockingQueue.put(ArrayBlockingQueue.java:324)
    at blockingqueue.ArrayBlockingQueueTest.main(ArrayBlockingQueueTest.java:11)

public class Test {
  private int queueSize = 10;
  private PriorityQueue<Integer> queue = new PriorityQueue<Integer>(queueSize);
   
  public static void main(String[] args) {
    Test test = new Test();
    Producer producer = test.new Producer();
    Consumer consumer = test.new Consumer();
     
    producer.start();
    consumer.start();
  }
   
  class Consumer extends Thread{
     
    @Override
    public void run() {
      consume();
    }
     
    private void consume() {
      while(true){
        synchronized (queue) {
          while(queue.size() == 0){
            try {
              System.out.println("队列空，等待数据");
              queue.wait();
            } catch (InterruptedException e) {
              e.printStackTrace();
              queue.notify();
            }
          }
          queue.poll();     //每次移走队首元素
          queue.notify();
          System.out.println("从队列取走一个元素，队列剩余"+queue.size()+"个元素");
        }
      }
    }
  }
   
  class Producer extends Thread{
     
    @Override
    public void run() {
      produce();
    }
     
    private void produce() {
      while(true){
        synchronized (queue) {
          while(queue.size() == queueSize){
            try {
              System.out.println("队列满，等待有空余空间");
              queue.wait();
            } catch (InterruptedException e) {
              e.printStackTrace();
              queue.notify();
            }
          }
          queue.offer(1);    //每次插入一个元素
          queue.notify();
          System.out.println("向队列取中插入一个元素，队列剩余空间："+(queueSize-queue.size()));
        }
      }
    }
  }
}

public class Test {
  private int queueSize = 10;
  private ArrayBlockingQueue<Integer> queue = new ArrayBlockingQueue<Integer>(queueSize);
   
  public static void main(String[] args) {
    Test test = new Test();
    Producer producer = test.new Producer();
    Consumer consumer = test.new Consumer();
     
    producer.start();
    consumer.start();
  }
   
  class Consumer extends Thread{
     
    @Override
    public void run() {
      consume();
    }
     
    private void consume() {
      while(true){
        try {
          queue.take();
          System.out.println("从队列取走一个元素，队列剩余"+queue.size()+"个元素");
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }
  }
   
  class Producer extends Thread{
     
    @Override
    public void run() {
      produce();
    }
     
    private void produce() {
      while(true){
        try {
          queue.put(1);
          System.out.println("向队列取中插入一个元素，队列剩余空间："+(queueSize-queue.size()));
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }
  }
}