发出其他线程停止信号的更好方法? [英] Better way to signal other thread to stop?
问题描述
启动了几个工作线程,需要通知他们停止。由于某些线程在下一轮工作之前会休眠一段时间,因此需要一种方法即使在他们正在睡觉时也能通知他们。
Started several worker threads , need to notify them to stop. Since some of the threads will sleep for a while before next round of working, need a way which can notify them even when they are sleeping.
如果是Windows编程我可以使用事件和等待功能。在Java中我通过使用CountDownLatch对象来做到这一点,该对象的计数为1.它工作但感觉不优雅,特别是我必须检查计数值以查看是否需要退出:
If it was Windows programming I could use Event and wait functions. In Java I am doing this by using a CountDownLatch object which count is 1. It works but don't feel elegant, especially I have to check the count value to see if need to exit :
run(){
while(countDownLatch.count()>0){
//working
// ...
countDownLatch.wait(60,TimeUnit.SECONDS);
}
}
信号量是另一种选择,但也感觉不到非常正确。我想知道有没有更好的办法呢?谢谢。
Semaphore is another choice, but also don't feel very right. I am wondering is there any better way to do this? Thank you.
推荐答案
最佳方法是 interrupt()
工作线程。
Best approach is to interrupt()
the worker thread.
Thread t = new Thread(new Runnable(){
@Override
public void run(){
while(!Thread.currentThread().isInterrupted()){
//do stuff
try{
Thread.sleep(TIME_TO_SLEEP);
}catch(InterruptedException e){
Thread.currentThread().interrupt(); //propagate interrupt
}
}
}
});
t.start();
只要你引用 t
,停止 t
所需要的只是调用 t.interrupt()
。
And as long as you have a reference to t
, all that is required to "stop" t
is to invoke t.interrupt()
.
这篇关于发出其他线程停止信号的更好方法?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!