RFR: 8307517: Add VMErrorCallback infrastructure to extend hs_err dumping

[Stefan Karlsson]

On Mon, 8 May 2023 06:14:21 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> I was treading in Runtime code and Coleen usually wants to use cached-away Thread pointers instead of calling Thread::current() repeatedly. I'm fine with either solution.
>
> Given the context it would have to be `Thread::current_or_null_safe()`. But yes we prefer not to re-materialize the current thread if we already have it at hand.

Could you explain why it would have to be `Thread::current_or_null_safe()`? The constructor and destructor are run in "normal" JVM code and not in the error handler.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13824#discussion_r1187072902