Java多線程問題--方法await()和awaitUninterruptibly()的用法和區別

本文內容部分引自《Java多線程編程核心技術》，感謝作者！！！

代碼地址：https://github.com/xianzhixianzhixian/thread.git

方法await()和awaitUninterruptibly()的用法和區別

方法condition.awaitUninterruptibly()的使用
線程在調用condition.await()後處於await狀態，此時調用thread.interrupt()會報錯
但是使用condition.awaitUninterruptibly()後，調用thread.interrupt()則不會報錯

方法await()和awaitUninterruptibly()的對比示例

Service.java

/**
 * 方法condition.awaitUninterruptibly()的使用
 * 線程在調用condition.await()後處於await狀態，此時調用thread.interrupt()會報錯
 * 但是使用condition.awaitUninterruptibly()後，調用thread.interrupt()則不會報錯
 * @author: xianzhixianzhixian
 * @date: 2019-01-22 20:49
 */
public class Service {
    private ReentrantLock lock = new ReentrantLock();
    private Condition condition = lock.newCondition();
    public void testMethod(){
        try {
            lock.lock();
            System.out.println("wait begin");
            condition.await();
            System.out.println("wait end");
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("catch");
        } finally {
            lock.unlock();
        }
    }

    public void testAwaitUnitMethod(){
        try {
            lock.lock();
            System.out.println("wait begin");
            condition.awaitUninterruptibly();
            System.out.println("wait end");
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("catch");
        } finally {
            lock.unlock();
        }
    }
}

MyThread0.java

/**
 * @author: xianzhixianzhixian
 * @date: 2019-01-22 20:56
 */
public class MyThread0 extends Thread {
    private Service service;

    public MyThread0(Service service) {
        this.service = service;
    }

    @Override
    public void run() {
        service.testMethod();
    }
}

MyThread1.java

/**
 * @author: xianzhixianzhixian
 * @date: 2019-01-22 20:56
 */
public class MyThread1 extends Thread {
    private Service service;

    public MyThread1(Service service) {
        this.service = service;
    }

    @Override
    public void run() {
        service.testAwaitUnitMethod();
    }
}

Run.java

/**
 * @author: xianzhixianzhixian
 * @date: 2019-01-22 20:56
 */
public class Run {
    public static void main(String[] args) {
        try {
            Service service = new Service();
            MyThread0 myThread0 = new MyThread0(service);
            myThread0.start();
            Thread.sleep(3000);
            myThread0.interrupt();

            MyThread1 myThread1 = new MyThread1(service);
            myThread1.start();
            Thread.sleep(3000);
            myThread1.interrupt();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

運行結果：使用了condition.await()的線程被中斷後報錯，使用了condition.awatUninterruptibly()的線程被中斷後不報錯。