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). ------------- Commit messages: - fixed trailing space in jvmtiEnvBase.hpp - 8346143: add ClearAllFramePops function to speedup debugger single stepping in some cases Changes: https://git.openjdk.org/jdk/pull/22744/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22744&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8346143 Stats: 132 lines in 10 files changed: 116 ins; 3 del; 13 mod Patch: https://git.openjdk.org/jdk/pull/22744.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/22744/head:pull/22744 PR: https://git.openjdk.org/jdk/pull/22744
