RFR: JDK-8150367: Add back information about the number of GC workers

[Bengt Rutisson]

Forgot to add the webrev link:

http://cr.openjdk.java.net/~brutisso/8150367/webrev.00/

Thanks Thomas for notifying me about it :)

Bengt

On 2016-02-22 13:46, Bengt Rutisson wrote:
>
> Hi everyone,
>
> Could I have a couple of reviews for this change?
>
> https://bugs.openjdk.java.net/browse/JDK-8150367
>
> Before the changes to use the unified logging framework for the GC 
> logging the number of GC worker threads was logged for each G1 
> evacuation pause. It was printed as part of the "Parallel Time" line:
>
> [Parallel Time: 5,5 ms, GC Workers: 23]
>
> This information was lost in the conversion to the unified logging 
> framework. This is relevant information and should be added back.
>
> The proposed patch adds this back as a separate log line. That looks 
> like this:
>
> [1,647s][info][gc,task     ] GC(36) GC Workers: 23
>
> The logging is done in AbstractWorkGang which is shared between G1 and 
> CMS (ParNew). So, this information is now also logged for CMS.
>
> Thanks,
> Bengt
>
>