生产者与消费者-N：1-基于list

多个生产者/一个消费者：

 1 /**
 2  *    生产者
 3  */
 4 public class P {
 5     
 6     private MyStack stack;
 7     
 8     public P(MyStack stack) {
 9         this.stack = stack;
10     }
11     
12     public void pushService() {
13         stack.push();
14     }
15 }

 1 /**
 2  *    消费者
 3  */
 4 public class C {
 5     
 6     private MyStack stack;
 7     
 8     public C(MyStack stack) {
 9         this.stack = stack;
10     }
11     
12     public void popService() {
13         System.out.println("pop = " + stack.pop());
14     }
15 }

 1 /**
 2  *    模拟栈
 3  */
 4 public class MyStack {
 5     private List<Object> list = new ArrayList<>();
 6     
 7     public synchronized void push() {
 8         try {
 9             while(list.size() == 1) {
10                 this.wait();
11             }
12             list.add(""+Math.random());
13             this.notifyAll();
14             System.out.println("push:" + list.size());
15         } catch (InterruptedException e) {
16             e.printStackTrace();
17         }
18     }
19     
20     public synchronized String pop() {
21         String value = "";
22         try {
23             while(list.size() == 0) {
24                 System.out.println("pop 操作中：" + Thread.currentThread().getName() + "wait状态");
25                 this.wait();
26             }
27             value = ""+list.get(0);
28             list.remove(0);
29             this.notifyAll();
30             System.out.println("pop:" + list.size());
31         } catch (InterruptedException e) {
32             e.printStackTrace();
33         }
34         return value;
35     }
36 }

 1 /**
 2  *    生产者线程
 3  */
 4 public class P_Thread extends Thread {
 5     
 6     private P p;
 7     
 8     public P_Thread(P p) {
 9         this.p = p;
10     }
11     
12     @Override
13     public void run() {
14         while (true) {
15             p.pushService();
16         }
17     }
18 }

 1 /**
 2  *    消费者线程
 3  */
 4 public class C_Thread extends Thread {
 5     
 6     private C c;
 7     
 8     public C_Thread(C c) {
 9         this.c = c;
10     }
11     
12     @Override
13     public void run() {
14         while (true) {
15             c.popService();
16         }
17     }
18 }

 1 /**
 2  *    测试类
 3  */
 4 public class Run {
 5 
 6     public static void main(String[] args) {
 7         MyStack stack = new MyStack();
 8         P p1 = new P(stack);
 9         P p2 = new P(stack);
10         P p3 = new P(stack);
11         C c1 = new C(stack);
12         
13         P_Thread pThread1 = new P_Thread(p1);
14         P_Thread pThread2 = new P_Thread(p2);
15         P_Thread pThread3 = new P_Thread(p3);
16         C_Thread cThread1 = new C_Thread(c1);
17         
18         pThread1.start();
19         pThread2.start();
20         pThread3.start();
21         cThread1.start();
22     }
23 }

运行结果如下：