RFR: 8356173: Remove ThreadCritical [v5]

[Johan Sjölen]

On Tue, 13 May 2025 11:58:06 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Updated the description in the bug.  This removes the last use of ThreadCritical and replaces it with a global PlatformMutex lock.
>> Tested with tier1-4, and tier1 on all Oracle-supported OSs.
>
> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Use Camel case for global lock variable.

This seems fine by me as well. Thanks for removing some more code :-).

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Marked as reviewed by jsjolen (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/25072#pullrequestreview-2838917114