BufferInterruptibly.java

package study.java.thread.lock;

import java.util.concurrent.locks.ReentrantLock;

public class BufferInterruptibly {

    private ReentrantLock lock = new ReentrantLock();

    public void write() {
        lock.lock();
        try {
            long startTime = System.currentTimeMillis();
            System.out.println("开始往这个buff写入数据…");
            for (;;)// 模拟要处理很长时间    
            {
                if (System.currentTimeMillis()
                        - startTime > Integer.MAX_VALUE) {
                    break;
                }
            }
            System.out.println("终于写完了");
        } finally {
            lock.unlock();
        }
    }

    public void read() throws InterruptedException {
        lock.lockInterruptibly();// 注意这里，可以响应中断    
        try {
            System.out.println("从这个buff读数据");
        } finally {
            lock.unlock();
        }
    }

    public static void main(String args[]) {
        BufferInterruptibly buff = new BufferInterruptibly();

        final Writer2 writer = new Writer2(buff);
        final Reader2 reader = new Reader2(buff);

        writer.start();
        reader.start();

        new Thread(new Runnable() {

            @Override
            public void run() {
                long start = System.currentTimeMillis();
                for (;;) {
                    if (System.currentTimeMillis()
                            - start > 5000) {
                        System.out.println("不等了，尝试中断");
                        reader.interrupt();  //此处中断读操作
                        break;
                    }
                }
            }
        }).start();

    }
}

class Reader2 extends Thread {

    private BufferInterruptibly buff;

    public Reader2(BufferInterruptibly buff) {
        this.buff = buff;
    }

    @Override
    public void run() {

        try {
            buff.read();//可以收到中断的异常，从而有效退出    
        } catch (InterruptedException e) {
            System.out.println("我不读了");
        }

        System.out.println("读结束");

    }
}

class Writer2 extends Thread {

    private BufferInterruptibly buff;

    public Writer2(BufferInterruptibly buff) {
        this.buff = buff;
    }

    @Override
    public void run() {
        buff.write();
    }
    
}