线程通信：生产者消费者阻塞队列版_queueflag.poll(10 timeunit.seconds);-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_40823802/article/details/98360190

本文通过使用volatile、CAS、AtomicInteger和BlockingQueue等工具，详细介绍了如何在Java中实现生产者消费者模式。通过一个具体的例子，展示了线程间的交互过程，包括生产、消费和停止操作。

class MyResource{

    private volatile boolean FLAG = true;//默认开启，进行生产+消费
    private AtomicInteger atomicInteger = new AtomicInteger();

    BlockingQueue<String> blockingQueue = null;

    public MyResource(BlockingQueue<String> blockingQueue) {

        this.blockingQueue = blockingQueue;
        System.out.println(blockingQueue.getClass().getName());

    }

    public void myProd() throws Exception {
        String data = null;
        boolean retValue;
        while (FLAG) {
            data = atomicInteger.incrementAndGet() + "";
            retValue= blockingQueue.offer(data, 2L, TimeUnit.SECONDS);
            if (retValue) {
                System.out.println(Thread.currentThread().getName() + "\t 插入队列" +
                        data + "成功");
            }else{
                System.out.println(Thread.currentThread().getName() + "\t 插入队列" +
                        data + "失败");

            }
            Thread.sleep(1000);
        }
        System.out.println(Thread.currentThread().getName()+"\t stop!!!FLAG=false了，生产动作结束！");

    }

    public void myConsumer()throws Exception {

        String result = null;
        System.out.println();
        System.out.println();
        while (FLAG) {
            result = blockingQueue.poll(2L, TimeUnit.SECONDS);
            if (null == result || result.equalsIgnoreCase("")) {
                FLAG = false;
                System.out.println(Thread.currentThread().getName()+"\t 超过两秒钟没有取到蛋糕，消费退出！");
                return;
            }
            System.out.println(Thread.currentThread().getName() + "\t 消费队列蛋糕" + result + "成功");

        }
    }


    public void stop()throws Exception {
        this.FLAG = false;
    }

}




//  volatile/CAS/atomicInteger/BlockQueue/线程交互/原子引用

public class ProdConsumer_BlockQueueDemo {

    public static void main(String[] args) throws Exception {

        MyResource myResource = new MyResource(new ArrayBlockingQueue<>(10));

        new Thread(() -> {

            System.out.println(Thread.currentThread().getName() + "\t 生产线程启动");
            try {
                myResource.myProd();
            } catch (Exception e) {
                e.printStackTrace();
            }
        },"Prod").start();



        new Thread(() -> {

            System.out.println(Thread.currentThread().getName() + "\t 生产线程启动");
            try {
                myResource.myConsumer();
            } catch (Exception e) {
                e.printStackTrace();
            }
        },"Consumer").start();

        Thread.sleep(5000);

        System.out.println();
        System.out.println();
        System.out.println();

        System.out.println("5秒钟时间到，main线程叫停，活动结束");

        myResource.stop();


    }

}