RFR: 8346123: [REDO] NMT should not use ThreadCritical [v12]

[David Holmes]

On Thu, 9 Jan 2025 16:34:08 GMT, Robert Toyonaga <duke at openjdk.org> wrote:

> Say **thread_A** is the only thread started. It does not acquire the lock (since single threaded) and enters the critical section. While **thread_A** is in the critical section, **thread_B** is started,

Hold on there - who is starting thread B? Only thread A exists and it won't create thread B from within the critical section.

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PR Comment: https://git.openjdk.org/jdk/pull/22745#issuecomment-2581949574