Integrated: 8346143: add ClearAllFramePops function to speedup debugger single stepping in some cases

[Serguei Spitsyn]

On Fri, 13 Dec 2024 20:50:37 GMT, Serguei Spitsyn <sspitsyn at openjdk.org> wrote:

> New JVMTI function `ClearAllFramePops` will help to speedup debugger single stepping in some cases.
> Additionally, the JVMTI `NotifyFramePop` implementation was fixed to return `JVMTI_ERROR_DUPLICATE` to make it consistent with the `SetBreakpoint` which also returns this error.
> 
> The JDWP agent fix will be needed to make use of this new JVMTI function. The corresponding debugger bug is:
> [8229012](https://bugs.openjdk.org/browse/JDK-8229012): When single stepping, the debug agent can cause the thread to remain in interpreter mode after single stepping completes
> 
> CSR: [8346144](https://bugs.openjdk.org/browse/JDK-8346144): add ClearAllFramePops function to speedup debugger single stepping in some cases
> 
> Testing:
>  - mach5 tiers 1-6 were run to make sure this fix caused no regressions
>  - Chris tested the JVMTI patch with his JDWP fix of [8229012](https://bugs.openjdk.org/browse/JDK-8229012).

This pull request has now been integrated.

Changeset: 761774a1
Author:    Serguei Spitsyn <sspitsyn at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/761774a120f4aa326da3c55a000dacc5549762e9
Stats:     398 lines in 11 files changed: 362 ins; 12 del; 24 mod

8346143: add ClearAllFramePops function to speedup debugger single stepping in some cases

Reviewed-by: cjplummer, amenkov

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PR: https://git.openjdk.org/jdk/pull/22744