RFR: 8273912: Add threadControl_dumpThread(jthread) function

[Kevin Walls]

On Thu, 16 Sep 2021 21:20:00 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

> Trivial change to add an internal API that is useful when debugging. Only included in debug builds, and has no impact on debug agent functionality.

Marked as reviewed by kevinw (Committer).

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PR: https://git.openjdk.java.net/jdk/pull/5554