RFR: 8282475: SafeFetch should not rely on existence of Thread::current [v4]

[Johannes Bechberger]

On Wed, 9 Mar 2022 06:49:37 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> But os is okay? I just use this name for grouping.
>
> "os" is okay. Its historical. Its also more of a namespace really.

but current_thread_wx would be too? Maybe I could change both to namespaces?

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PR: https://git.openjdk.java.net/jdk/pull/7727