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原 lock绑定多条件Condition

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题目：

多线程之间按顺序调用，实现A->B->C三个线程启动，要求A打印5次，B打印10次，C打印15次，ABC都循环10次


代码如下：

package com.mszl.thread;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * 功能：锁绑定多个条件：多线程之间按顺序调用，实现A->B->C三个线程启动，要求A打印5次，B打印10次，C打印15次，ABC都循环10次
 * 备注：更多资料请访问 http://www.91mszl.com
 * @author bobo teacher
 */
class shareData{
	
	private int number=1; // 为1是A打印，为2时B打印，为3时C打印
	private Lock lk=new ReentrantLock();
	private Condition cd1=lk.newCondition();
	private Condition cd2=lk.newCondition();
	private Condition cd3=lk.newCondition();
	
	
	public void print5(){
		lk.lock();
		try{
			// 1 判断
			while(number!=1){ // A==1时开始打印
				cd1.await();
			}
			// 2 业务逻辑
			for(int i=1; i<=5; i++){
				System.out.println(Thread.currentThread().getName() + "\t" + number);
			}
			// 3 通知
			number=2;
			cd2.signal();
		} catch(Exception ex){
			ex.printStackTrace();
		} finally{
			lk.unlock();
		}
	}
	
	public void print10(){
		lk.lock();
		try{
			// 1 判断
			while(number!=2){ // B==2时开始打印
				cd2.await();
			}
			// 2 业务逻辑
			for(int i=1; i<=10; i++){
				System.out.println(Thread.currentThread().getName() + "\t" + number);
			}
			// 3 通知
			number=3;
			cd3.signal();
		} catch(Exception ex){
			ex.printStackTrace();
		} finally{
			lk.unlock();
		}
	}
	
	public void print15(){
		lk.lock();
		try{
			// 1 判断
			while(number!=3){ // C==3时开始打印
				cd3.await();
			}
			// 2 业务逻辑
			for(int i=1; i<=15; i++){
				System.out.println(Thread.currentThread().getName() + "\t" + number);
			}
			// 3 通知
			number=1;
			cd1.signal();
		} catch(Exception ex){
			ex.printStackTrace();
		} finally{
			lk.unlock();
		}
	}
	
	
}

public class MoreConditionDemo {
	
	public static void main(String[] args) {
		shareData sd=new shareData();
		
		// A线程
		Thread t1=new Thread(new Runnable() {
			@Override
			public void run() {
				for (int i = 1; i <=10; i++) {
					sd.print5();
				}
			}
		});
		t1.start();
		
		// B线程
		Thread t2=new Thread(new Runnable() {
			@Override
			public void run() {
				for (int i = 1; i <=10; i++) {
					sd.print10();
				}
			}
		});
		t2.start();
		
		// C线程
		Thread t3=new Thread(new Runnable() {
			@Override
			public void run() {
				for (int i = 1; i <=10; i++) {
					sd.print15();
				}
			}
		});
		t3.start();
	}
	

}


执行结果：

Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-0	1
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-1	2
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3
Thread-2	3


2019-12-02 14:30:49     阅读(1182)

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