RFR 8012647: Add Arrays.parallelPrefix (prefix sum, scan, cumulative sum)

Alan Bateman Alan.Bateman at oracle.com
Wed Jun 12 16:07:12 UTC 2013

On 12/06/2013 15:50, Chris Hegarty wrote:
> Add implementations of parallelPrefix() in Arrays for Object, int, 
> long, and double arrays.
> Specdiff:
> http://cr.openjdk.java.net/~chegar/8012647/ver.00/specdiff/java/util/Arrays.html 
> Webrev:
>   http://cr.openjdk.java.net/~chegar/8012647/ver.00/webrev/
> This work was done over in the lambda forest mainly by Doug Lea, with 
> some small spec updates by myself.
> Note: Some work still need to be done to clean up the test, but I 
> would like to focus mainly on the API and try to get it finalized first.
> -Chris.
Is the name final? Just curious if other names such as parallelScan have 
been considered (and discarded).

"Cumulates in parallel each element ...", I guess I would put a comma 
before and after "in parallel".

Otherwise the API looks good to me.


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