通过wait和notify实现的生产者消费者demo

迷南。 2022-04-15 07:44 142阅读 0赞

Java代码 :  
import java.util.ArrayList;  
import java.util.List;  
/\*\*  
\* 通过wait和notify实现的生产者消费者demo  
\* User: zhangb  
\* Date: 12-12-1  
\* Time: 下午7:19  
\*/  
public class ProducerAndCustomerDemo \{  
private static int capacity = 150;  
private static List<String> basket = new ArrayList<String>(capacity);  
  
public static void main(String\[\] args) \{  
// 多生产者与多消费者  
int producerSize = 2;  
Thread\[\] ps = new Thread\[producerSize\];  
for (int i = 0, step = 500; i < producerSize; i ++) \{  
ps\[i\] = new Thread(new Producer((i) \* step, (i+1) \* step), "生产-->线程--" + (i+1));  
ps\[i\].start();  
\}  
  
int customerSize = 10;  
Thread\[\] cs = new Thread\[customerSize\];  
for (int i = 0; i < customerSize; i ++) \{  
cs\[i\] = new Thread(new Customer(), "消费线程--" + (i+1));  
cs\[i\].start();  
\}  
  
// 等待生产线程结束并中断消费线程  
for (int i = 0; i < producerSize; i ++) \{  
try \{  
ps\[i\].join();  
\} catch (InterruptedException e) \{  
e.printStackTrace();  
\}  
\}  
for (int i = 0; i < customerSize; i ++) \{  
cs\[i\].interrupt();  
\}  
\}  
static class Producer implements Runnable \{  
private int start;  
private int end;  
  
Producer(int start, int end) \{  
this.start = start;  
this.end = end;  
\}  
  
@Override  
public void run() \{  
for (int i = start; i < end; i ++) \{  
synchronized (basket) \{  
try \{  
while (basket.size() == capacity) \{  
basket.wait();  
\}  
String p = " PRO" + i;  
System.out.println(Thread.currentThread().getName() + p);  
basket.add(p);  
basket.notifyAll();  
Thread.yield(); // 让出当前线程的执行权,有利于看出交替线程运行的效果  
\} catch (InterruptedException e) \{  
e.printStackTrace();  
break;  
\}  
\}  
\}  
\}  
\}  
static class Customer implements Runnable \{  
@Override  
public void run() \{  
while (true) \{  
synchronized (basket) \{  
try\{  
while (basket.size() == 0) \{  
basket.wait();  
\}  
System.out.println(Thread.currentThread().getName() + basket.remove(0));  
basket.notifyAll();  
\} catch (InterruptedException e) \{  
System.out.println(Thread.currentThread().getName() + "退出");  
break;  
\}  
\}  
\}  
\}  
\}  
\}