RFR: 8368781: PerfMemory - make issues more transparent [v7]

[Matthias Baesken]

On Tue, 21 Oct 2025 14:35:28 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> Currently issues with perfMemory like problems with the secure tmp subdirectory creation are not very transparent in release JVMs.
>> 
>> There exists some warnings traces but they are behind develop flags like Verbose so only available in debug JVMs.
>> We could (in case of issues) store some information and write it later into hsinfo/hserr files ; or make the existing warnings available too in release JVMs.
>
> Matthias Baesken has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Reformatting suggested by David
>  - unneeded \ removed

I added one more commit following the suggestions from Goetz .

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PR Comment: https://git.openjdk.org/jdk/pull/27602#issuecomment-3431050398