RFR: 8334026: Provide a diagnostic PrintMemoryMapAtExit switch on Linux [v2]

[David Holmes]

On Tue, 18 Jun 2024 08:38:35 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> To investigate footprint problems of processes with a short lifespan (e.g. startup footprint problems), we found it very useful to be able to get an annotated memory map at exit - the same map printed by jcmd System.map.
>
> Thomas Stuefe has updated the pull request incrementally with one additional commit since the last revision:
> 
>   feedback david

Looks good. Thanks

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Marked as reviewed by dholmes (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19660#pullrequestreview-2124991067