RFR+RFA [11u]: 8215175: Inconsistencies in JFR event metadata

[Erik Gahlin]

Great minds think alike. I did something similar for Oracle JDK.

Not exactly the same down to white spaces and line breaks, but it will 
result in the same output, which is what matters for users and Mission 
Control.

Erik

> Hi,
>
> and another one...
>
> May I please get reviews for the downport of 8215175 to jdk11u.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8215175
> Original Change: http://hg.openjdk.java.net/jdk/jdk/rev/c8b2a408628b
> Backport Webrev: http://cr.openjdk.java.net/~clanger/webrevs/8215175.jdk11u/
>
> The patch did not apply cleanly.
>
> src/hotspot/share/jfr/metadata/metadata.xml had some fuzz but change is effectively the same as the original one.
> src/jdk.jfr/share/classes/jdk/jfr/internal/Utils.java also failed. I copied the changed methods from the code that can be found in jdk/jdk currently.
> src/jdk.jfr/share/classes/jdk/jfr/internal/tool/PrettyWriter.java does not exist because of the missing jfr tool. So patch could obviously not be applied to that file.
>
> I'll run the full test suite before pushing.
>
> Best regards
> Christoph
>