相关疑难解决方法(0)

我正在寻找一个可以提供超时的ExecutorService实现.提交给ExecutorService的任务如果花费的时间超过运行超时,则会中断.实现这样的野兽不是一项艰巨的任务,但我想知道是否有人知道现有的实施.

以下是我根据下面的一些讨论提出的内容.任何意见？

import java.util.List;
import java.util.concurrent.*;

public class TimeoutThreadPoolExecutor extends ThreadPoolExecutor {
    private final long timeout;
    private final TimeUnit timeoutUnit;

    private final ScheduledExecutorService timeoutExecutor = Executors.newSingleThreadScheduledExecutor();
    private final ConcurrentMap<Runnable, ScheduledFuture> runningTasks = new ConcurrentHashMap<Runnable, ScheduledFuture>();

    public TimeoutThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue, long timeout, TimeUnit timeoutUnit) {
        super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);
        this.timeout = timeout;
        this.timeoutUnit = timeoutUnit;
    }

    public TimeoutThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue, ThreadFactory threadFactory, long timeout, …

我需要在具有特定超时的java中执行外部批处理文件.这意味着如果批处理执行时间超过指定的超时,我需要取消执行.

这是我写的示例代码:

public static void main(String[] args) throws IOException, InterruptedException {
    ProcessBuilder p = new ProcessBuilder("c:\\wait.bat", "25");  // batch file execution will take 25 seconds.
    final long l = System.currentTimeMillis();
    System.out.println("starting..." + (System.currentTimeMillis() - l));
    final Process command = p.start();
    System.out.println("started..." + (System.currentTimeMillis() - l));

    Timer t = new Timer();
    t.schedule(new TimerTask() {

        @Override
        public void run() {
            command.destroy();
        }
    }, 5000);   // it will kill the process after 5 seconds (if it's not finished yet).
    int i = command.waitFor(); …