RFR: JDK-8055845 - Add trace event for promoted objects

[Erik Gahlin]

Did you manage to call the field "class"? It's a reserved word in C++, 
so we had to use "klass" in the past

Descriptions with only one sentence shouldn't end with "."

How is "Object Age" measured?

As a user, I would expect the number to be in seconds/minutes/hours, but 
that is not the case. Perhaps an explanation in the description and/or a 
field name that better reflects what we really mean with age.

Otherwise trace.xml looks good!

Erik

Staffan Friberg skrev 25/08/14 18:28:
> Hi,
>
> Could I please get reviews for this RFE that adds a trace event for 
> aging and promotion for young collections in G1, CMS and Parallel GC.
> It works similarly to allocation events, and generates the event on 
> the slow path when either a direct copy occurs or a new PLAB is request.
>
> Since I'm adding an event I cc:ed the serviceability list in case 
> anyone has any comments on the event and changes to trace.xml.
>
> RFE: https://bugs.openjdk.java.net/browse/JDK-8055845
> Webrev: http://cr.openjdk.java.net/~brutisso/8055845/webrev.00
>
> Bengt has been kind and agreed to both sponsor and host the the webrev.
>
> Thanks,
> Staffan
>