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Stackless issue #275: Support PEP-523 eval_frame-hook #276
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added 6 commits
June 20, 2021 23:15
Integrate the C-function PyEval_EvalFrameEx_slp into into the C-function slp_eval_frame_value and rename slp_eval_frame_value to PyEval_EvalFrameEx_slp. Adapt the gdb support library and document the change.
Support the PEP-523 eval_frame-hook for one particular use case: byte code instrumentation. An example is the pydev-debugger. It can use the hook to inject "break-points". This is much more efficient, than traditional trace functions.
Support the PEP-523 eval_frame-hook for one particular use case: byte code instrumentation. An example is the pydev-debugger. It can use the hook to inject "break-points". This is much more efficient, than traditional trace functions. Improve the implementation and add a test case.
Update changelog.txt
This was referenced Jun 22, 2021
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Now that upstream commit bdace21 has been merged (commit 05f4c34 in branch 3.8-slp) Stackless 3.8 is ABI compatible with Cython for C-Python 3.8. Therefore I could test the latest PyDev Debugger and it works well. I used gdb to verify that the eval_frame_hook is indeed used as expected. Time to merge the pull request and to port it to main-slp. |
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Stackless issue #275: Support PEP-523 eval_frame-hook
Support the PEP-523 eval_frame-hook for one particular use case: byte
code instrumentation. An example is the pydev-debugger. It can use the
hook to inject "break-points". This is much more efficient, than
traditional trace functions.
Tested with eclipse pydev 8.3.0.202104101217 and with the current 'main' branch of https://github.com/fabioz/PyDev.Debugger. It works, and does not crash, but it does not modify byte code, because Stackless main-slp does not yet support PEP-570.
Support for PEP-570 comes between v3.8.0a3 and v3.8.0a4 with commit 8c77b8c.
Therefore we should delay this pull request until after merging 8c77b8c.We need additional commits, at least bdace21.