多线程 CyclicBarrier

import java.util.concurrent.CyclicBarrier;

/**
 * 循环屏障
 */
public class CyclicBarrierTest {
    static CyclicBarrier cyclicBarrier;

    public static void main(String[] args) {
        int count = 10;
        // 当所有子任务都执行完毕时,barrierAction的run方法会被调用
        cyclicBarrier = new CyclicBarrier(count, () ->
                System.out.println("执行barrierAction操作!"));
        // 开启多个线程执行子任务
        for (int i = 0; i < count; i++) {
            new Thread(new CyclicBarrierThread(cyclicBarrier, i)).start();
        }

    }

    private static class CyclicBarrierThread implements Runnable {

        public CyclicBarrier cyclicBarrier;

        // 任务序号
        public int taskNum;

        public CyclicBarrierThread(CyclicBarrier cyclicBarrier, int taskNum) {
            this.cyclicBarrier = cyclicBarrier;
            this.taskNum = taskNum;
        }

        @Override
        public void run() {
            // 执行子任务
            System.out.println("子任务：" + taskNum + " 执行完毕!");
            try {
                // 等待所有子任务执行完成
                cyclicBarrier.await();

            } catch (Exception e) {
                e.printStackTrace();
            }
            // 释放资源
            System.out.println("线程：" + taskNum + " 释放资源!");

        }
    }
}

 

来源：oschina

链接：https://my.oschina.net/u/3777515/blog/3214943