New allocation profiler

[Aleksey Shipilev]

On 04/16/2015 12:39 AM, Vladimir Sitnikov wrote:
>> Please start a separate thread.
> 
> Please, nooo. I should have silently fixed that (see [1])
> I beg on your forgiveness here since the fix touches pretty much the
> same source file (see [2]).

All right, I filed:
 https://bugs.openjdk.java.net/browse/CODETOOLS-7901390

...and will close it as duplicate.

> Please review alloc.rate being added to GCProfiler.

Good, I have pushed it with some minor polishing (rearranged code a bit,
inlined a few functions, etc):
  https://bugs.openjdk.java.net/browse/CODETOOLS-7901386

If you have time, please pull the fresh JMH workspace, and try to run it
through any use cases you have for this profiler. I ran mine, and it
performs well.

Thank you for the contribution!

Cheers,
-Aleksey.