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Re: [PATCH 0/4] trace2: add macOS and Windows process ancestry tracing

From
Junio C Hamano <gitster@pobox.com>
Date
Feb 9, 2026, 17:05 UTC
Message-ID
<xmqqo6lx6e5h.fsf@gitster.g>
In-Reply-To
<56c1a7eb-a645-4453-8024-b320c1ebd55e@gmail.com>
Derrick Stolee <stolee@gmail.com> writes:
Show 12 quoted lines
>> Furthermore, let's refactor the Windows implementation to align with the
>> Linux and macOS versions - by emitting the ancestry information as a
>> cmd_ancestry event. We keep the older, custom data_json event type on
>> Windows for compatibility for consumers of the TRACE2 data that use the
>> older event.
>
> I appreciate this compatibility approach. I mention in my patch-by-patch
> review that we should eventually drop the old mechanism, say in two major
> versions.
>
> The code looks good to me, just a question about the testing and some very
> minor nitpicks around recursion and strvecs.

Thanks for a prompt review (and thanks for the series author for writing the patches, of course).

Will mark as "expecting a hopefully minor and final reroll".
Previous: Derrick StoleeNext: Matthew John Cheetham via GitGitGadget
Message 14 of 25 in “trace2: add macOS and Windows process ancestry tracing”
  1. 0/4 trace2: add macOS and Windows process ancestry tracingMatthew John Cheetham via GitGitGadget, Feb 5, 2026
  2. 2/4 build: include procinfo.c impl for macOSMatthew John Cheetham via GitGitGadget, Feb 5, 2026
  3. Derrick StoleeFeb 9, 2026
  4. 1/4 trace2: add macOS process ancestry tracingMatthew John Cheetham via GitGitGadget, Feb 5, 2026
  5. Derrick StoleeFeb 9, 2026
  6. Matthew John CheethamFeb 9, 2026
  7. Derrick StoleeFeb 10, 2026
  8. 3/4 trace2: refactor Windows process ancestry trace2 eventMatthew John Cheetham via GitGitGadget, Feb 5, 2026
  9. Derrick StoleeFeb 9, 2026
  10. 4/4 trace2: emit cmd_ancestry data for WindowsMatthew John Cheetham via GitGitGadget, Feb 5, 2026
  11. Kristoffer HaugsbakkFeb 5, 2026
  12. Derrick StoleeFeb 9, 2026
  13. Derrick StoleeFeb 9, 2026
  14. Junio C HamanoFeb 9, 2026
  15. 0/6 trace2: add macOS and Windows process ancestry tracingMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  16. 1/6 trace2: add macOS process ancestry tracingMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  17. 2/6 build: include procinfo.c impl for macOSMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  18. Junio C HamanoFeb 13, 2026
  19. 3/6 trace2: refactor Windows process ancestry trace2 eventMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  20. Junio C HamanoFeb 13, 2026
  21. 4/6 trace2: emit cmd_ancestry data for WindowsMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  22. Junio C HamanoFeb 13, 2026
  23. 5/6 test-tool: extend trace2 helper with 400ancestryMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  24. 6/6 t0213: add trace2 cmd_ancestry testsMatthew John Cheetham via GitGitGadget, Feb 13, 2026
  25. Derrick StoleeFeb 14, 2026

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