From: pharo@googlecode.com

Subject: [Pharo-bugtracker] Issue 7608 in pharo: Add a parallel Collection enumeration

Date: February 26, 2013 11:03:36 PM GMT+01:00

To: pharo-bugtracker@lists.gforge.inria.fr

Reply-To: codesite-noreply@google.com

Status: Accepted
Owner: camillob...@gmail.com
Labels: Type-Feature Target-Collection Milestone-3.0

New issue 7608 by camillob...@gmail.com: Add a parallel Collection enumeration
http://code.google.com/p/pharo/issues/detail?id=7608

I starte a small project to implement parallel operations on these collection.

Example:
--------

"Download url contents in parallel"
urls parallel collect: [ :url | ZnClient get: url ]

"Download url contents with 100 connections in parallel"
(urls parallel: 100) collect: [ :url | ZnClient get: url ]


New Classes:
------------
- ParallelIterator
 Manages the number of concurrent processes and implementes the basic enumeration methods (such as #do: #select: #collect:) in a parallel manner
- ThreadPool: following the java implementation, manages a set of threads and runs only a certain amount of processes in parallel


Parallel Methods so far:
------------------------
- allSatisfy:
- anySatisfy:
- collect:
- collect:thenSelect:
- detect:
- do:without:
- noneSatisfy:
- reject:
- withIndexDo:
- detect:ifNone:
- do:
- doWithIndex:

Application:
------------
Mainly when doing file and network operations it is nice to have a simple parallel interface


Sources:
--------
http://smalltalkhub.com/#!/~dh83/parallel-iterator

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