我需要实现一个计划的执行程序服务,该服务每隔x秒在一个间隔中运行一个线程。 如果花费的时间超过y秒,则应该中断线程执行。 我曾尝试使用ScheduledExecutorService实现该解决方案,该服务器具有该时间间隔的可配置参数,但没有一个用于超时。 我有一些想法,我想听听你对实现/技术的建议。
答案 0 :(得分:1)
这有用吗?任务每10秒开始一次,完成需要5秒钟,你会在timedout(3秒)时收到InterruptedException。
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.MoreExecutors;
import java.util.Date;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
public class Worker implements Runnable {
ListeningExecutorService listeningExecutorService;
ScheduledExecutorService scheduledExecutorService;
Runnable task;
public Worker(ListeningExecutorService listeningExecutorService, ScheduledExecutorService scheduledExecutorService, Runnable task) {
this.listeningExecutorService = listeningExecutorService;
this.scheduledExecutorService = scheduledExecutorService;
this.task = task;
}
@Override
public void run() {
ListenableFuture future = listeningExecutorService.submit(task);
Futures.withTimeout(future, 3, TimeUnit.SECONDS, scheduledExecutorService);
}
public static void main(String[] args) {
ListeningExecutorService listeningExecutorService = MoreExecutors
.listeningDecorator(Executors.newCachedThreadPool());
ScheduledExecutorService scheduledExecutorService = Executors.newScheduledThreadPool(5);
Worker worker = new Worker(listeningExecutorService, scheduledExecutorService, new Runnable() {
@Override
public void run() {
System.out.println("Now begin: " + new Date());
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("Now end: " + new Date());
}
});
scheduledExecutorService.scheduleAtFixedRate(worker, 0, 10, TimeUnit.SECONDS);
}
}