Integrated: 8340698: JVMTI FRAME_POP event is sometimes missed if NotifyFramePop is called as a method is returning

[Serguei Spitsyn]

On Fri, 11 Oct 2024 08:39:42 GMT, Serguei Spitsyn <sspitsyn at openjdk.org> wrote:

> There is a race between JVMTI NotifyFramePop function and FramePop event posting code.
> The fix is to return JVMTI_ERROR_OPAQUE_FRAME if if a FramePop event with depth 0 is requested by NotifyFramePop at the time when the target frame is in exit epilogue, and MethodExit/FramePop events are being posted for it.
> 
> Testing:
>  - verified locally with new test (developed by Chris): `serviceability/jvmti/events/NotifyFramePopStressTest`
>  - TBD: mach5 tiers 1-6

This pull request has now been integrated.

Changeset: 85911094
Author:    Serguei Spitsyn <sspitsyn at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/8591109419efc8f71544a98bdb04a48cb1afc47e
Stats:     340 lines in 6 files changed: 339 ins; 0 del; 1 mod

8340698: JVMTI FRAME_POP event is sometimes missed if NotifyFramePop is called as a method is returning

Reviewed-by: cjplummer, amenkov

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PR: https://git.openjdk.org/jdk/pull/21468