Patch: Integrate async-profiler

[Aleksey Shipilev]

Hi Mark,

On 10/1/20 3:25 PM, Mark Price wrote:
> thanks for the work on including async-profiler support.
> I'm seeing some samples from warm-up iterations in the generated output, but it looks as though the 
> intent is to effectively trash the samples from the warm-up phase:

Yes. That explains why I saw warmup profiles as well. I had not followed up back then.

I think the proper fix is this:
   https://github.com/openjdk/jmh/commit/2398e8e8b5518ea1229ba254792a4bd9df428ec0

Would you mind checking if it works for you? I works for me.

(I intended to push it to Git branch, but oh well).

-- 
Thanks,
-Aleksey