java-生产者消费者模式

来源：互联网发布：网络录相机输出黑屏编辑：程序博客网时间：2024/05/20 16:40

经常会有公司叫我们手撕代码，比如网易，阿里，那我们是不是该掌握下呢。下面这段代码来自《现代操作系统》进程与线程P49页。

public class ProducerConsumer {    public ProducerConsumer() { }    private static final int N = 100;    static Producer producer = new Producer();    static Consumer consumer = new Consumer();    static Monitor monitor = new Monitor();    private static class Producer extends Thread {        @Override        public void run() {            //你生产的对象            int item;            while(true) {                item = produce_item();                monitor.insert(item);               }        }        public int produce_item() {            //TODO你需要生产的对象        }    }    private static class Consumer extends Thread {        @Override        public void run() {            //你打算消费的对象            int item;            while(true) {                item = monitor.remove();                consumer_item(item);                }        }        private int consumer_item(int item) {            // TODO Auto-generated method stub        }    }    private static class Monitor {    //存放对象的容器        LinkedList<Integer> buffer = new LinkedList<>();        int count =0;        public synchronized void insert(int item) {            if(count == N) {                try {                    wait();                } catch (InterruptedException e) {                    e.printStackTrace();                }            }            buffer.add(item);            count++;            if(count == 1) {                notifyAll();            }        }        public synchronized int remove() {            if(count == 0) {                try {                    wait();                } catch (InterruptedException e) {                    e.printStackTrace();                }            }            int val = buffer.getFirst();            buffer.remove();            count--;            if(count == N-1) {                notifyAll();                }            return val;        }    public static void main(String[] args) {        producer.start();        consumer.start();    }}

阅读全文

0 0