Java Phaser arriveAndDeregister() 方法

2025 年 3 月 21 日 | 阅读 2 分钟

arriveAndDeregister() 方法属于 Phaser 类。该方法在当前 phaser 到达时注销自己，而无需等待队列中其他 phaser 的到达。

语法

它返回到达的 phaser 数量。

抛出

IllegalStateException - 当未到达的参与者数量为负数时，会抛出此异常。

示例 1

import java.util.concurrent.Phaser;
public class PhaserArriveAndDeregisterExample1
{
    public static void main(String[] args) throws InterruptedException
    {
          Phaser p = new Phaser(10);
          p.register();
         int pc = p.getPhase();
          System.out.println("Thread is sleeping");
          Thread.sleep(5000);
           new PhaserArriveAndDeregisterExample1().test1(p);
          System.out.println("Final Phase count after arrival of Thread is "+pc);   
    }
    void test1(final Phaser p)
    {
        new Thread(){
                @Override
                public void run()
                    {
                        try{
                        System.out.println(Thread.currentThread().getName()+" arrived");
                        }
                       finally {
                                System.out.println("Thread Arrive And Deregister... ");
                                 p.arriveAndDeregister();
                            }
                    }

               }.start();
    }
}

输出

Thread is sleeping
Final Phase count after arrival of Thread is 0
Thread-0 arrived
Thread Arrive And Deregister...

示例 2

import java.util.concurrent.Phaser;
public class PhaserArriveAndDeregisterExample2
{
    public static void main(String[] args) throws InterruptedException
    {
          Phaser p = new Phaser(10);
          p.register();
         int pc = p.getPhase();
          System.out.println("Thread is sleeping");
          Thread.sleep(5000);
          for(int i=0; i<=5; i++)
          {
           new PhaserArriveAndDeregisterExample2().test1(p);
          }
          System.out.println("Final Phase count after arrival of Thread is "+pc);   
    }
    void test1(final Phaser p)
    {
        new Thread(){
                @Override
                public void run()
                    {
                        try{
                        System.out.println(Thread.currentThread().getName()+" arrived");
                        }
                       finally {
                                System.out.println("Thread Arrive And Deregister... ");
                                 p.arriveAndDeregister();
                            }
                    }

               }.start();
    }
}

输出

Thread is sleeping
Thread-2 arrived
Thread Arrive And Deregister... 
Thread-1 arrived
Thread Arrive And Deregister... 
Thread-3 arrived
Thread Arrive And Deregister... 
Thread-5 arrived
Thread Arrive And Deregister... 
Thread-0 arrived
Thread Arrive And Deregister... 
Thread-4 arrived
Thread Arrive And Deregister... 
Final Phase count after arrival of Thread is 0

下一话题Java Phaser

Java Phaser arriveAndDeregister() 方法

语法

返回

抛出

示例 1

示例 2

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Java Phaser arriveAndDeregister() 方法

语法

返回

抛出

示例 1

示例 2

相关帖子

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