RFR: 8140393: Move WorkerDataArray to its own file

[Thomas Schatzl]

Hi,

On Mon, 2015-10-26 at 13:23 +0100, Erik Helin wrote:
> Hi all,
> 
> this patch moves the class WorkerDataArray into its own file. While
> moving to the code, I also refurbished it a bit. WorkerDataArray used
> to cache the results for calls to max(), min(), sum() etc because it
> might be expensive too loop over the array. However, the array we are
> iterating over will at most be as big as the number of GC threads (it is
> very rare to use more than 1000 GC threads). Performance runs shows no
> regressions at all, so I prefer to go with the simpler code.
> 
> Enhancement:
> https://bugs.openjdk.java.net/browse/JDK-8140393
> 
> Webrev:
> http://cr.openjdk.java.net/~ehelin/8140393/webrev.00/
> 
> Testing:
> - JPRT
> - Perf Aurora for performance regressions

  looks good.

Thomas