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Re: Threads, waiting for last one to finish

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Am 11.01.2013 22:56, schrieb Roedy Green:
> I have 25 threads that start at once. I need to wait until the last
> one completes. Is there a better way to handle that than using a
> ThreadPoolExecutor which seems overkill.

You could use a Phaser, like so:

   final Phaser phaser = new Phaser(1);
   for(int i=0; i < taskCount; i++) {
     phaser.register();
     executor.execute(new Runnable() {
       public void run() {
         try {
              // do sth
           );
         } catch (InterruptedException e) {
              Thread.currentThread().interrupt();
         }
         phaser.arrive();
       }
     });
   }
   phaser.arriveAndAwaitAdvance();


-- Sebastian

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Threads, waiting for last one to finish Roedy Green <see_website@mindprod.com.invalid> - 2013-01-11 13:56 -0800
  Re: Threads, waiting for last one to finish markspace <markspace@nospam.nospam> - 2013-01-11 14:05 -0800
    Re: Threads, waiting for last one to finish Roedy Green <see_website@mindprod.com.invalid> - 2013-01-11 14:14 -0800
      Re: Threads, waiting for last one to finish markspace <markspace@nospam.nospam> - 2013-01-11 15:11 -0800
        Re: Threads, waiting for last one to finish Arne Vajhøj <arne@vajhoej.dk> - 2013-01-11 20:02 -0500
        Re: Threads, waiting for last one to finish Roedy Green <see_website@mindprod.com.invalid> - 2013-01-12 01:51 -0800
        Re: Threads, waiting for last one to finish Roedy Green <see_website@mindprod.com.invalid> - 2013-01-12 02:20 -0800
          Re: Threads, waiting for last one to finish Arne Vajhøj <arne@vajhoej.dk> - 2013-01-12 09:08 -0500
        Re: Threads, waiting for last one to finish Roedy Green <see_website@mindprod.com.invalid> - 2013-01-12 10:36 -0800
          Re: Threads, waiting for last one to finish Arne Vajhøj <arne@vajhoej.dk> - 2013-01-12 16:17 -0500
    Re: Threads, waiting for last one to finish Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-01-12 23:39 -0800
      Re: Threads, waiting for last one to finish Arne Vajhøj <arne@vajhoej.dk> - 2013-01-13 22:35 -0500
        Re: Threads, waiting for last one to finish Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-01-14 09:12 -0800
        Re: Threads, waiting for last one to finish Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-01-14 22:29 -0800
          Re: Threads, waiting for last one to finish markspace <markspace@nospam.nospam> - 2013-01-15 08:19 -0800
            Re: Threads, waiting for last one to finish Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-01-16 01:28 -0800
              Re: Threads, waiting for last one to finish Robert Klemme <shortcutter@googlemail.com> - 2013-01-20 15:21 +0100
            Re: Threads, waiting for last one to finish Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-01-18 21:58 -0800
      Re: Threads, waiting for last one to finish Robert Klemme <shortcutter@googlemail.com> - 2013-01-26 17:20 +0100
  Re: Threads, waiting for last one to finish Knute Johnson <nospam@knutejohnson.com> - 2013-01-11 21:19 -0800
    Re: Threads, waiting for last one to finish Robert Klemme <shortcutter@googlemail.com> - 2013-01-13 19:38 +0100
      Re: Threads, waiting for last one to finish Knute Johnson <nospam@knutejohnson.com> - 2013-01-14 08:58 -0800
      Re: Threads, waiting for last one to finish Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-01-15 05:05 -0400
  Re: Threads, waiting for last one to finish Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-01-12 08:42 -0400
    Re: Threads, waiting for last one to finish Roedy Green <see_website@mindprod.com.invalid> - 2013-01-12 23:56 -0800
      Re: Threads, waiting for last one to finish Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-01-13 10:53 -0400
        Re: Threads, waiting for last one to finish Roedy Green <see_website@mindprod.com.invalid> - 2013-01-13 19:18 -0800
          Re: Threads, waiting for last one to finish Arne Vajhøj <arne@vajhoej.dk> - 2013-01-13 22:26 -0500
            Re: Threads, waiting for last one to finish Arved Sandstrom <asandstrom2@eastlink.ca> - 2013-01-14 05:51 -0400
              Re: Threads, waiting for last one to finish Arne Vajhøj <arne@vajhoej.dk> - 2013-01-14 19:02 -0500
        Re: Threads, waiting for last one to finish Roedy Green <see_website@mindprod.com.invalid> - 2013-01-13 19:43 -0800
  Re: Threads, waiting for last one to finish Sebastian <news@seyweiler.dyndns.org> - 2013-01-13 15:19 +0100

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