Java Phaser arrive() 方法

2025年3月21日 | 阅读 1 分钟

Phaser 类的 arrive() 方法用于通知当前 Phaser 的到达，而无需等待其他 Phaser 到达。

语法

它返回当前 Phaser 的到达编号。

抛出

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

示例 1

import java.util.concurrent.Phaser;
public class JavaPhaserArriveExample1
{	
    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 JavaPhaserArriveExample1().test1(p);
           p.arrive();
          }
          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");
                        }catch(Exception e){};
                    }

               }.start();
    }
}

输出

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

示例 2

import java.util.concurrent.Phaser;
public class JavaPhaserArriveExample2
{
	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 JavaPhaserArriveExample2().test1(p);
           p.arrive();
           new JavaPhaserArriveExample2().test1(p);
           p.arrive();
         
          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");
                        }catch(Exception e){};
                    }

               }.start();
    }
}

输出

Thread is sleeping
Final Phase count after arrival of Thread is 0
Thread-1 arrived
Thread-0 arrived

下一话题Java Phaser

Java Phaser arrive() 方法

语法

返回

抛出

示例 1

示例 2

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Java Phaser arrive() 方法

语法

返回

抛出

示例 1

示例 2

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