Java Phaser getRoot() 方法

2025 年 3 月 21 日 | 阅读 2 分钟

getRoot() 方法属于 Phaser 类。此方法用于获取当前 phaser 的根。

语法

它返回当前 phaser 的根。

示例 1

import java.util.concurrent.Phaser;
public class PhaserGetRootExample1
{
    public static void main(String[] args) throws InterruptedException
    {
        int i, j;
          Phaser p = new Phaser();
          p.register();
          int pc = p.getPhase();
          System.out.println("Phasecount is "+pc);
          for(i=0;i<=5;i++)
          {
          new PhaserGetRootExample1().testPhaser(p);
    
          }
              System.out.println("Root : "+p.getRoot());
          Thread.sleep(5000);
          pc = p.getPhase();
          System.out.println("Phasecount is "+pc); 
    }
    private void testPhaser(final Phaser phaser)
    {
        new Thread(){
                @Override
                public void run()
                    {
                        System.out.println(Thread.currentThread().getName()+" arrived");
                       
                    }
               }.start();
    }
}

输出

Phasecount is 0
Thread-0 arrived
Thread-1 arrived
Root : java.util.concurrent.Phaser@7852e922[phase = 0 parties = 1 arrived = 0]
Thread-4 arrived
Thread-3 arrived
Thread-2 arrived
Thread-5 arrived

示例 2

import java.util.concurrent.Phaser;
public class PhaserGetRootExample2
{
    public static void main(String[] args) throws InterruptedException
    {
        int i, j;
          Phaser p = new Phaser();
          p.register();
          int pc = p.getPhase();
          System.out.println("Phasecount is "+pc);
          for(i=0;i<=5;i++)
          {
          new PhaserGetRootExample2().testPhaser(p);
          if(i==3)
          {
          new PhaserGetRootExample2().testPhaser(p);
           System.out.println("Root : "+p.getRoot());
          }
    
          }
              System.out.println("Root : "+p.getRoot());
          Thread.sleep(5000);
          pc = p.getPhase();
          System.out.println("Phasecount is "+pc);
           
    }
    private void testPhaser(final Phaser phaser)
    {
        new Thread(){
                @Override
                public void run()
                    {
                        System.out.println(Thread.currentThread().getName()+" arrived");
                       
                    }
               }.start();
    }
}

输出

Phasecount is 0
Thread-1 arrived
Root : java.util.concurrent.Phaser@7852e922[phase = 0 parties = 1 arrived = 0]
Thread-0 arrived
Root : java.util.concurrent.Phaser@7852e922[phase = 0 parties = 1 arrived = 0]
Thread-4 arrived
Thread-3 arrived
Thread-5 arrived
Thread-2 arrived
Thread-6 arrived
Phasecount is 0

下一话题Java Phaser

Java Phaser getRoot() 方法

语法

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示例 1

示例 2

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Java Phaser getRoot() 方法

语法

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示例 1

示例 2

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