StackOverflow2013

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plurals

PO
primarykey
Id
6375009
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2011-06-16T16:08:24.770
FavoriteCount
0
LastActivityDate
2015-03-25T09:47:11.110
LastEditDate
2015-03-25T09:47:11.110
LastEditorUserId
2611083
OwnerUserId
177800
ParentId
3269445
PostTypeId
2
Score
-1
ViewCount
0
LastEditorDisplayName
text
Body
You can use a <a href="http://download.oracle.com/javase/6/docs/api/java/util/concurrent/CompletionService.html" rel="nofollow">ThreadPoolExecutor</a> with a pool size set to <a href="http://download.oracle.com/javase/6/docs/api/java/lang/Runtime.html#availableProcessors%28%29" rel="nofollow">Runtime.getRuntime().availableProcessors()</a> and <code>.execute()</code> it all the tasks you want to execute, then call <code>tpe.shutdown()</code> and then wait in a <code>while(!tpe.terminated()) { /* waiting for all tasks to complete */}</code> which blocks for all the submitted tasks to complete. where <code>tpe</code> is a reference to your <code>ThreadPoolExecutor</code> instance. Or if it is more appropriate use an <a href="http://download.oracle.com/javase/6/docs/api/java/util/concurrent/ExecutorCompletionService.html" rel="nofollow">ExecutorCompletionService</a> A <a href="http://download.oracle.com/javase/6/docs/api/java/util/concurrent/CompletionService.html" rel="nofollow">CompletionService</a> that uses a supplied Executor to execute tasks. This class arranges that submitted tasks are, upon completion, placed on a queue accessible using take. The class is lightweight enough to be suitable for transient use when processing groups of tasks. NOTE: This solutions does not block like <code>ExecutorService.invokeAll()</code> does while waiting on all the jobs to finish. So while the simplest it is also the most limited as it will block the main thread of the application. Not good if you want status about what is going on, or to do other things while these jobs are running, like post processing the results or producing and incremental aggregated result.
Tags
Title
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1. This table or related slice is empty.
PostParentId
1. POExecutorService, how to wait for all tasks to finish
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 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USBenoît Sauvère
UserOwnerUserId
1. USfeeling unwelcome
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1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
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 VTUpMod
2. VO
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CommentsPostId
1. COIsn't while(!tpe.isTerminated()) called busywait and potentially very CPU intensive?
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 USjontejj

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