java闭锁_java8中CountDownLatch闭锁

重新修改程序，每次线程执行减少1

package com.gwolf;

import java.util.concurrent.CountDownLatch;

public class TestCountDownLatch {

public static void main(String[] args) throws InterruptedException {

CountDownLatch countDownLatch = new CountDownLatch(5);

LatchDemo latchDemo = new LatchDemo(countDownLatch);

long start = System.currentTimeMillis();

for(int i = 0;i< 10;i++) {

new Thread(latchDemo).start();

}

countDownLatch.await();

long end = System.currentTimeMillis();

System.out.println("耗费时间：" + (end -start));

}

class LatchDemo implements Runnable {

//闭锁

private CountDownLatch countDownLatch;

public LatchDemo(CountDownLatch countDownLatch) {

this.countDownLatch = countDownLatch;

}

@Override

public void run() {

synchronized (this) {

try {

for (int i = 0; i < 500000; i++) {

if (i % 2 == 0) {

System.out.println(i);

}

} finally {

countDownLatch.countDown();

}

java闭锁_java8中CountDownLatch闭锁相关推荐

Java并发编程之CountDownLatch(闭锁)使用详解
package com.zhangxueliang.day_20191108;import java.util.concurrent.CountDownLatch;/*** 计算多线程的运行时间* @ ...
Java并发编程之CountDownLatch闭锁
CountDownLatch 典型应用场景:主线程启动多个子线程同时执行业务逻辑,所有子线程都执行完毕,再唤醒主线程继续执行. 例子: public class CountDownLatchTest ...
Java并发工具类（闭锁CountDownLatch）
并发工具类系列: Java并发工具类(闭锁CountDownLatch) Java并发工具类(栅栏CyclicBarrier) Java并发工具类(信号量Semaphore) 闭锁是一种同步工具类,可 ...
聊聊高并发（二十六）解析java.util.concurrent各个组件（八）理解CountDownLatch闭锁
CountDownLatch闭锁也是基于AQS实现的一种同步器,它表示了"所有线程都等待,直到锁打开才继续执行"的含义.它和Semaphore的语意不同, Semaphore的获取 ...
同步机制之--java之CountDownLatch闭锁
CountDownLatch闭锁 1.类介绍一个同步辅助类,在完成一组正在其他线程中执行的操作之前,它允许一个或多个线程一直等待.用给定的计数初始化 CountDownLatch.CountDown ...
Java并发编程笔记之 CountDownLatch闭锁的源码分析
转自: Java并发编程笔记之 CountDownLatch闭锁的源码分析 JUC 中倒数计数器 CountDownLatch 的使用与原理分析,当需要等待多个线程执行完毕后在做一件事情时候 C ...
并发编程-16AQS同步组件之CountDownLatch 闭锁
文章目录脑图 CountDownLatch闭锁示例 Thread#join() CountDownLatch CountDownLatch示例二 await一直等待其他线程执行完 CountDow ...
同步工具之CountDownLatch闭锁
CountDownLatch是一个同步辅助类,在完成一组正在其他线程中执行的操作之前,它允许一个或多个线程一直等待 ,即CountDownLatch允许一个或多个线程等待其他线程完成操作.闭锁可以延迟 ...
java闭锁_【Java并发编程三】闭锁
1.什么是闭锁? 闭锁(latch)是一种Synchronizer(Synchronizer:是一个对象,它根据本身的状态调节线程的控制流.常见类型的Synchronizer包括信号量.关卡和闭锁). ...

java闭锁_java8中CountDownLatch闭锁

java闭锁_java8中CountDownLatch闭锁相关推荐

最新文章

热门文章