RFR(S): 8170672: Event-based tracing to support classloader instances

[Erik Gahlin]

Looks good.

Erik

> Greetings,
>
> Kindly asking for reviews for the following changeset:
>
> Bug/Enh: https://bugs.openjdk.java.net/browse/JDK-8170672
>
> Webrev: http://cr.openjdk.java.net/~mgronlun/8170672/webrev01/ 
> <http://cr.openjdk.java.net/%7Emgronlun/8170672/webrev01/>
>
> (this work is covered by an FC exception)
>
> Summary:
>
> Event-based tracing previously had little information about class 
> loaders; a class loader was essentially treated no different than from 
> a regular class (type information only).
>
> With JDK9, supported has been added to java.lang.ClassLoader to 
> associate a name with an individual class loader instance.
>
> This changeset will allow the name information of individual class 
> loader instances to be provided by the event-based tracing framework.
>
> Aux info:
>
> Some folding of the numerous macros completed as well.
>
> Thanks in advance
> Markus
>

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