RFR: 7894: Provide an alternative Java based flamegraph visualization [v18]

[Alex Macdonald]

On Fri, 9 Jun 2023 15:24:56 GMT, Brice Dutheil <bdutheil at openjdk.org> wrote:

>> Not quite sure why it's complaining here .. when I step through the code it correctly checks for the null and then moves on, but eventually throws an NPE on that line that checks for the module name.
>
> That's really odd, could you share the JFR and the searched text

Yeah sure, I'll send some info to you over slack

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PR Review Comment: https://git.openjdk.org/jmc/pull/408#discussion_r1224457736