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Re: [PATCH v2 08/11] reftable/writer: unify releasing memory

From
Han-Wen Nienhuys <hanwenn@gmail.com>
Date
Apr 4, 2024, 07:08 UTC
Message-ID
<CAOw_e7aBPF1vPvF7iYXCM5VBQu-Nw00dO2pRC_6DU3PtdDUsbg@mail.gmail.com>
In-Reply-To
<41db7414e17201f85b476af5e0183e72de450310.1712209149.git.ps@pks.im>
On Thu, Apr 4, 2024 at 7:48 AM Patrick Steinhardt <ps@pks.im> wrote:
Show 7 quoted lines
> There are two code paths which release memory of the reftable writer:
>
>   - `reftable_writer_close()` releases internal state after it has
>     written data.
>
>   - `reftable_writer_free()` releases the block that was written to and
>     the writer itself.

The bifurcation is there so you can read the stats after closing the writer. The new method makes it harder to misuse, but now you have two ways to end a writer. Suggestion: drop reftable_writer_{free,close} from reftable-writer.h (rename to remove the reftable_ prefix because they are no longer considered public) and find another way to read out the stats. Either pass an optional reftable_writer_stats into the construction of the writer, return the stats from the close function, or drop stats altogether. IIRC They are only used in the unit tests.

-- 
Han-Wen Nienhuys - hanwenn@gmail.com - http://www.xs4all.nl/~hanwen
Previous: Patrick SteinhardtNext: Patrick Steinhardt
Message 27 of 49 in “reftable: optimize write performance”
  1. 0/9 reftable: optimize write performancePatrick Steinhardt, Apr 2, 2024
  2. 1/9 refs/reftable: fix D/F conflict error message on ref copyPatrick Steinhardt, Apr 2, 2024
  3. Junio C HamanoApr 3, 2024
  4. 2/9 refs/reftable: perform explicit D/F check when writing symrefsPatrick Steinhardt, Apr 2, 2024
  5. 3/9 refs/reftable: skip duplicate name checksPatrick Steinhardt, Apr 2, 2024
  6. 4/9 refs/reftable: don't recompute committer identPatrick Steinhardt, Apr 2, 2024
  7. Junio C HamanoApr 3, 2024
  8. Patrick SteinhardtApr 4, 2024
  9. 5/9 reftable/writer: refactorings for `writer_add_record()`Patrick Steinhardt, Apr 2, 2024
  10. 6/9 reftable/writer: refactorings for `writer_flush_nonempty_block()`Patrick Steinhardt, Apr 2, 2024
  11. 7/9 reftable/block: reuse zstream when writing log blocksPatrick Steinhardt, Apr 2, 2024
  12. Junio C HamanoApr 3, 2024
  13. Patrick SteinhardtApr 4, 2024
  14. 8/9 reftable/block: reuse compressed arrayPatrick Steinhardt, Apr 2, 2024
  15. 9/9 reftable/writer: reset `last_key` instead of releasing itPatrick Steinhardt, Apr 2, 2024
  16. 00/11 reftable: optimize write performancePatrick Steinhardt, Apr 4, 2024
  17. 01/11 refs/reftable: fix D/F conflict error message on ref copyPatrick Steinhardt, Apr 4, 2024
  18. 02/11 refs/reftable: perform explicit D/F check when writing symrefsPatrick Steinhardt, Apr 4, 2024
  19. 03/11 refs/reftable: skip duplicate name checksPatrick Steinhardt, Apr 4, 2024
  20. 04/11 reftable: remove name checksPatrick Steinhardt, Apr 4, 2024
  21. 05/11 refs/reftable: don't recompute committer identPatrick Steinhardt, Apr 4, 2024
  22. 06/11 reftable/writer: refactorings for `writer_add_record()`Patrick Steinhardt, Apr 4, 2024
  23. Han-Wen NienhuysApr 4, 2024
  24. Patrick SteinhardtApr 4, 2024
  25. 07/11 reftable/writer: refactorings for `writer_flush_nonempty_block()`Patrick Steinhardt, Apr 4, 2024
  26. 08/11 reftable/writer: unify releasing memoryPatrick Steinhardt, Apr 4, 2024
  27. Han-Wen NienhuysApr 4, 2024
  28. Patrick SteinhardtApr 4, 2024
  29. Han-Wen NienhuysApr 4, 2024
  30. Patrick SteinhardtApr 4, 2024
  31. 09/11 reftable/writer: reset `last_key` instead of releasing itPatrick Steinhardt, Apr 4, 2024
  32. 10/11 reftable/block: reuse zstream when writing log blocksPatrick Steinhardt, Apr 4, 2024
  33. 11/11 reftable/block: reuse compressed arrayPatrick Steinhardt, Apr 4, 2024
  34. Han-Wen NienhuysApr 4, 2024
  35. Patrick SteinhardtApr 4, 2024
  36. 00/11 reftable: optimize write performancePatrick Steinhardt, Apr 8, 2024
  37. 01/11 refs/reftable: fix D/F conflict error message on ref copyPatrick Steinhardt, Apr 8, 2024
  38. 02/11 refs/reftable: perform explicit D/F check when writing symrefsPatrick Steinhardt, Apr 8, 2024
  39. 03/11 refs/reftable: skip duplicate name checksPatrick Steinhardt, Apr 8, 2024
  40. 04/11 reftable: remove name checksPatrick Steinhardt, Apr 8, 2024
  41. 05/11 refs/reftable: don't recompute committer identPatrick Steinhardt, Apr 8, 2024
  42. 06/11 reftable/writer: refactorings for `writer_add_record()`Patrick Steinhardt, Apr 8, 2024
  43. 07/11 reftable/writer: refactorings for `writer_flush_nonempty_block()`Patrick Steinhardt, Apr 8, 2024
  44. 08/11 reftable/writer: unify releasing memoryPatrick Steinhardt, Apr 8, 2024
  45. 09/11 reftable/writer: reset `last_key` instead of releasing itPatrick Steinhardt, Apr 8, 2024
  46. 10/11 reftable/block: reuse zstream when writing log blocksPatrick Steinhardt, Apr 8, 2024
  47. 11/11 reftable/block: reuse compressed arrayPatrick Steinhardt, Apr 8, 2024
  48. Junio C HamanoApr 9, 2024
  49. Patrick SteinhardtApr 9, 2024

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