RFR: 8327990: [macosx-aarch64] JFR enters VM without WXWrite

[Richard Reingruber]

On Wed, 13 Mar 2024 09:49:19 GMT, David Holmes <dholmes at openjdk.org> wrote:

> As I wrote in JBS, shouldn't this be handled by `ThreadInVMfromNative`?

(I wanted to publish the PR before answering your comment)

This would be reasonable in my opinion.
I've hoisted setting `WXWrite` mode in `JfrJvmtiAgent::retransform_classes()` because multiple instances of `ThreadInVMfromNative` are reached. This is likely not even necessary. Still exceptions could be made if there are usages of `ThreadInVMfromNative` where it is needed.

While I agree I'd prefer to do it as a separate enhancement.

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PR Comment: https://git.openjdk.org/jdk/pull/18238#issuecomment-1994000304