[英]ScheduledExecutorService and ThreadPoolTaskExecutor that interrupts tasks after a timeout
[英]ScheduledExecutorService that interrupts after a timeout
我需要實現一個計划的執行程序服務,該服務每隔x秒運行一次線程。 如果花費了y秒以上的時間,則應該中斷線程的執行。 我嘗試使用ScheduledExecutorService實現解決方案,該服務的時間間隔具有可配置的參數,但沒有超時參數。 我有一些想法,我想聽聽您對實施/技術的建議。
這對您有幫助嗎?任務每10秒開始執行一次,大約需要5秒才能完成,當超時(3秒)時您會收到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);
}
}
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