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Copy pathPC.java
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85 lines (74 loc) · 1.72 KB
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package CommonProblems.multithread.pc;/**
* @Classname PC
* @Description 线程间通信:生产者+消费者
* @Date 19-5-25 下午2:29
* @Created by mao<[email protected]>
*/
class Q{
int n;
boolean flag=false;
//尽管使用了同步机制,但是并不能够保证程序运行的先后顺序,需要使用线程之间的通信机制
synchronized int get(){
if (!flag){
try {
wait();
}catch (InterruptedException e){
System.out.println("interrupted");
}
}
System.out.println("Got:"+n);
flag=false;
notify();
return n;
}
synchronized void put(int n){
if(flag){
try {
wait();
}catch (InterruptedException e){
System.out.println("interrupted");
}
}
this.n=n;
flag=true;
System.out.println("Put:"+n);
notify();
}
}
class Producer implements Runnable{
Q q;
Producer(Q q){
this.q=q;
new Thread(this,"Producer").start();
}
public void run(){
int i=0;
while (true){
q.put(i++);
try {
Thread.sleep(1000);
}catch (InterruptedException e){
System.out.println("Main thread interrupted");
}
}
}
}
class Consumer implements Runnable{
Q q;
Consumer(Q q){
this.q=q;
new Thread(this,"Consumer").start();
}
public void run(){
while (true){
q.get();
}
}
}
public class PC {
public static void main(String[] args){
Q q=new Q();
new Producer(q);
new Consumer(q);
}
}