RFR: 8324829: Uniform use of synchronizations in NMT

[Afshin Zafari]

On Fri, 1 Mar 2024 14:56:35 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> In NMT, both `ThreadCritical` and `Tracker` objects are used to do synchronizations. `Tracker` class uses `ThreadCritical` internally and used only for uncommit and release memory operations.  In this change, `Tracker` class is replaced with explicit use of `ThreadCritical` to be the same as the other instances of sync'ing NMT operations.
>> 
>> tiers1-5 tests passed.
>
> Sure. Ship it.

Thank you @tstuefe and @jdksjolen for your comments.
Thank you @kevinrushforth and @vnkozlov for your catch and help on fixing the issue number.

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PR Comment: https://git.openjdk.org/jdk/pull/18000#issuecomment-1975969142