Java Phaser getPhase() 方法

2025 年 3 月 21 日 | 阅读 2 分钟

Phaser 类的 getPhase() 方法用于返回当前的阶段编号。阶段编号的最大值为 Integer.MAX_VALUE。如果阶段编号为负数，它会返回负值。

语法

它返回当前的阶段编号。如果 Phaser 已终止，则返回一个负数。

示例 1

import java.util.concurrent.Phaser;
public class JavaPhaserGetPhaseExample1
{
    public static void main(String[] args) throws InterruptedException
    {
          Phaser p = new Phaser(10);
          p.register();
          int pc = p.getPhase(); 
          System.out.println("Initial Phase count is "+pc);
          System.out.println("Thread is sleeping");
          for(int i=0; i<=10; i++)
          {
            new JavaPhaserGetPhaseExample1().test(p);
                  p.arrive();
          }
          pc = p.getPhase();
          System.out.println("Final Phase count after arrival of Thread is "+pc);
    }
    void test(final Phaser p)
    {
        new Thread(){
                @Override
                public void run()
                    {
                   
                        System.out.println(Thread.currentThread().getName()+" arrived"); 
                    }
               }.start();
    }
}

输出

Initial Phase count is 0
Thread is sleeping
Thread-0 arrived
Thread-1 arrived
Thread-2 arrived
Thread-3 arrived
Thread-4 arrived
Thread-5 arrived
Thread-6 arrived
Thread-7 arrived
Thread-8 arrived
Final Phase count after arrival of Thread is 1
Thread-10 arrived
Thread-9 arrived

示例 2

import java.util.concurrent.Phaser;
public class JavaPhaserGetPhaseExample2
{
    public static void main(String[] args) throws InterruptedException
    {
          Phaser p = new Phaser();
          p.register();
          System.out.println("Phaser Object is register...");
          int pc = p.getPhase();
          System.out.println("Initial Phase count is "+pc);
          new JavaPhaserGetPhaseExample2().test(p);
    }
     private void test(final Phaser p)
    {
        new Thread(){
                @Override
                public void run()
                    {
                        System.out.println(Thread.currentThread().getName()+" arrived");
                        p.arriveAndAwaitAdvance();
                    }
               }.start();
    }
}

输出

Phaser Object is register...
Initial Phase count is 0
Thread-0 arrived

下一话题Java Phaser

Java Phaser getPhase() 方法

语法

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示例 1

示例 2

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Java Phaser getPhase() 方法

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示例 1

示例 2

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