RFR: 8338405: JFR: Use FILE type for dcmds

[Sonia Zaldana Calles]

On Mon, 23 Sep 2024 19:52:57 GMT, Leonid Mesnik <lmesnik at openjdk.org> wrote:

>> Hi all, 
>> 
>> This PR addresses [8338405](https://bugs.openjdk.org/browse/JDK-8338405) switching `STRING` to `FILE` for JFR.start, JFR.stop and JFR.dump where appropriate. 
>> 
>> This is consistent with the new `FILE` type that was introduced in [8334492](https://bugs.openjdk.org/browse/JDK-8334492).
>> 
>> Testing:
>> - [x] JFR test suite passes 
>> - [x] GHA 
>> 
>> Thanks, 
>> Sonia
>
> Marked as reviewed by lmesnik (Reviewer).

Thanks! @lmesnik @egahlin

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PR Comment: https://git.openjdk.org/jdk/pull/21025#issuecomment-2371507606