多线程之生产者消费者--管程法

刺骨的言语ヽ痛彻心扉 2022-12-27 01:54 132阅读 0赞

线程之间的交互通讯可以通过生产者消费者方式解决。

生产者： 负责生产数据

消费者：负责消费数据

缓冲区：消费者从缓冲区中消费数据，如果没有就等待阻塞，生产生产数据往缓冲区，缓冲区满了则阻塞等待消费者消费。

package thread;
    
    /**
     * 生产者消费者-- 管程法
     */
    
    public class TestPC {
    
        public static void main(String[] args) {
            Container synContainer = new Container();
            Producer producer = new Producer(synContainer);
            Consumer comsumer = new Consumer(synContainer);
    
            Thread p = new Thread(producer, "producer");
            Thread c = new Thread(comsumer, "comsumer");
            p.start();
            c.start();
        }
    
    }
    
    class Prodect {
        private int id;
        private String name;
    
        public Prodect(int id, String name) {
            this.id = id;
            this.name = name;
        }
    
        public int getId() {
            return id;
        }
    
        public void setId(int id) {
            this.id = id;
        }
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    }
    
    class Container {
        Prodect[] prodects = new Prodect[10];
        int count = 0;
    
        public synchronized void produce(Prodect prodect) {
            if (count == prodects.length) {
                try {
                    System.out.println(Thread.currentThread().getName() + "生产者生产了产品未消费，阻塞等待！");
                    this.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            this.prodects[count] = prodect;
            count++;
            this.notifyAll();
        }
    
        public synchronized Prodect comsumer() {
            if (count == 0) {
                try {
                    System.out.println(Thread.currentThread().getName() + "消费者没有产品消费，等待阻塞！");
                    this.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
    
            }
            count--;
            Prodect prodect = this.prodects[count];
            this.notifyAll();
            return prodect;
        }
    }
    
    class Producer implements Runnable {
        private Container container;
    
        public Producer(Container container) {
            this.container = container;
        }
    
    
        @Override
        public void run() {
            for (int i = 0; i < 100; i++) {
                container.produce(new Prodect(i, "产品：" + i));
                System.out.println(Thread.currentThread().getName() + "生产者生产了产品");
            }
        }
    }
    
    
    class Consumer implements Runnable  {
        private Container container;
    
        public Consumer(Container container) {
            this.container = container;
        }
    
        @Override
        public void run() {
            for (int i = 0; i < 100; i++) {
                Prodect prodect = container.comsumer();
                System.out.println(Thread.currentThread().getName() + "消费者消费了产品 : " + prodect.getName());
            }
        }
    
    
    }

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