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感谢Blader同学的抛砖
首先，这段代码会编译成功吗，运行起来会有异常吗，他会打印什么？
- import java.util.concurrent.BlockingQueue;
- import java.util.concurrent.LinkedBlockingQueue;
- public class Foo {
- public static void main(String[] args) throws InterruptedException {
- BlockingQueue q = new LinkedBlockingQueue();
- q.put(1);
- Thread.currentThread().interrupt();
- System.out.println(q.take());
- }
- }
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
public class Foo {
public static void main(String[] args) throws InterruptedException {
BlockingQueue q = new LinkedBlockingQueue();
q.put(1);
Thread.currentThread().interrupt();
System.out.println(q.take());
}
}运行后结果如下：
- Exception in thread "main" java.lang.InterruptedException
- at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireInterruptibly(AbstractQueuedSynchronizer.java:1135)
- at java.util.concurrent.locks.ReentrantLock.lockInterruptibly(ReentrantLock.java:312)
- at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:354)
- at Foo.main(Foo.java:9)
Exception in thread "main" java.lang.InterruptedException at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireInterruptibly(AbstractQueuedSynchronizer.java:1135) at java.util.concurrent.locks.ReentrantLock.lockInterruptibly(ReentrantLock.java:312) at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:354) at Foo.main(Foo.java:9)
看了一下源代码，阻塞队列的访问方法（take、put、poll、offer）会在执行之前检查Lock对象的中断标记，而Lock对象则是检查当前线程的中断标记
原创内容，转载请注明： 转载自拈花微笑
