JUC---06线程间通信(二)
2024-09-01 19:13:49
二、线程间定制化调用通信
要使多线程之间按顺序调用,实现A->B->C按顺序输出,使用Lock锁实现,通过Lock锁创建三个Condition实例(三把钥匙),通过不同的条件,调用不同钥匙的awite()跟singnal()方法,阻塞或唤醒其他线程
代码实现:
package com.jenne.mydemo; import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock; class ShareData { private int num = 1;//1:AA,2:BB,3:CC private Lock lock = new ReentrantLock();
Condition cd1 = lock.newCondition();
Condition cd2 = lock.newCondition();
Condition cd3 = lock.newCondition(); public void print5(int total) {
lock.lock();
try {
//判断
while (num != 1) {
cd1.await();
}
//干活
System.out.println(Thread.currentThread().getName() + "\t " + total + "\t"); //通知
num = 2;
cd2.signal(); } catch (Exception e) {
e.printStackTrace();
} finally {
lock.unlock();
} } public void print10(int total) {
lock.lock();
try {
//判断
while (num != 2) {
cd2.await();
}
//干活
System.out.println(Thread.currentThread().getName() + "\t " + total + "\t"); //通知
num = 3;
cd3.signal(); } catch (Exception e) {
e.printStackTrace();
} finally {
lock.unlock();
} } public void print15(int total) {
lock.lock();
try {
//判断
while (num != 3) {
cd3.await();
}
//干活
System.out.println(Thread.currentThread().getName() + "\t " + total + "\t"); //通知
num = 1;
cd1.signal(); } catch (Exception e) {
e.printStackTrace();
} finally {
lock.unlock();
}
}
} public class TestThreadOrderAccess { public static void main(String[] args) {
ShareData shareData = new ShareData(); new Thread(() -> {
for (int i = 1; i <= 10; i++) {
shareData.print5(i);
}
}, "AA").start(); new Thread(() -> {
for (int i = 1; i <= 10; i++) {
shareData.print10(i);
}
}, "BB").start();
new Thread(() -> {
for (int i = 1; i <= 10; i++) {
shareData.print15(i);
}
}, "CC").start();
}
}
最新文章
- 执行 $Gulp 时发生了什么 —— 基于 Gulp 的前端集成解决方案(二)
- cookie和session简单的用法
- [Android] 建立与使用Library
- linux下文件的特殊权限s和t
- AC日记——接龙游戏 codevs 1051
- ASP.NET Web API实现POST报文的构造与推送
- Spring学习8-Spring事务管理(编程式事务管理)
- Emmet插件使用方法总结
- RTP与RTCP协议介绍
- Code-first示例
- 数据结构(二维线段树,差分): NOI2012 魔幻棋盘
- ggplot2 坐标系相关设置(coord)
- Canvas画布实现自定义时钟效果
- 使用Java编译思想
- 变量类型-Tuple
- How to use GM MDI interface for programming
- MongoDB副本集配置系列一:安装MongoDB
- redis+keepalived安装
- puppet更新失败
- 一文详解 Linux 系统常用监控工具(top,htop,iotop,iftop)