RFR: 8356173: Remove ThreadCritical

[Zhengyu Gu]

On Tue, 6 May 2025 20:32:05 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.

src/hotspot/share/nmt/mallocTracker.cpp line 68:

> 66:   // copy is going on, because their size is adjusted using this
> 67:   // buffer in make_adjustment().
> 68:   ChunkPoolLocker lock;

At the time NMT was written, `ThreadCritical` was the only native lock. I wonder it is the time NMT gets its own lock?

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PR Review Comment: https://git.openjdk.org/jdk/pull/25072#discussion_r2081656758