RFR: JDK-8261034: improve jcmd GC.class_histogram to support parallel [v8]

Tue Apr 27 01:16:42 UTC 2021

On Mon, 26 Apr 2021 02:22:47 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> parallel -histo of jmap was added by JDK-8214535, it's better to support parallel for jcmd GC.class_histogram too.
>
> Hamlin Li has updated the pull request incrementally with one additional commit since the last revision:
> 
>   refine help message.

Seems the build failures on windows are not related to this change.
So, I think this change is ready for a reviewing.

-------------

PR: https://git.openjdk.java.net/jdk/pull/2379