Open source threadpool lib

问题

I was looking for open source thread pool lib which I can use to schedule the jobs and once that individual job is done I want some notification in the thread so that I can finish the rest of the task. Do you guys know any open source lib that is doing similar kind of work. I might be using this lib in multiple diff server.

Basic overview of my task is I have list of items. Each items needs to be submitted to other system throgh JMS/Webservice and then wait for response for each items being processed and do the rest of the task.

Thanks in advance

回答1:

How about j.u.c.ThreadPoolExecutor? Properly wrapped and coupled with judicious use of Future it should meet your stated specs. If you have specific "block this thread until the following task set completes" behavior, you may also make use of a CompletionService.

As another answerer pointed out, you could also jump all the way to using Quartz Scheduler, if you really need a fully-fleshed-out task scheduling service. It sounds like that's overkill for your problem, but you didn't give specifics. If this is the path you take, there's a lot of good Q+A on Quartz Scheduler here at SO.

回答2:

Check out ScheduledExecutors, run beepForAnHour once after 10 seconds, then every 10 seconds thereafter:

 import static java.util.concurrent.TimeUnit.*;
 class BeeperControl {
    private final ScheduledExecutorService scheduler =
       Executors.newScheduledThreadPool(1);

    public void beepForAnHour() {
        final Runnable beeper = new Runnable() {
                public void run() { System.out.println("beep"); }
            };
        final ScheduledFuture<?> beeperHandle =
            scheduler.scheduleAtFixedRate(beeper, 10, 10, SECONDS);
        scheduler.schedule(new Runnable() {
                public void run() { beeperHandle.cancel(true); }
            }, 60 * 60, SECONDS);
    }
 }

From:

http://download.oracle.com/javase/6/docs/api/java/util/concurrent/ScheduledExecutorService.html