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Re: [PATCH v2 01/10] packfile: move sizep computation

From
Taylor Blau <me@ttaylorr.com>
Date
Sep 17, 2024, 10:06 UTC
Message-ID
<ZulUw6nPfjE/aC+f@nand.local>
In-Reply-To
<20240823224630.1180772-2-e@80x24.org>
On Fri, Aug 23, 2024 at 10:46:21PM +0000, Eric Wong wrote:
Show 23 quoted lines
> From: Jeff King <peff@peff.net>
>
> Moving the sizep computation now makes the next commit to avoid
> redundant object info lookups easier to understand.  There is
> no user-visible change, here.
>
> [ew: commit message]
>
> Signed-off-by: Jeff King <peff@peff.net>
> Signed-off-by: Eric Wong <e@80x24.org>
> ---
>  packfile.c | 32 ++++++++++++++++----------------
>  1 file changed, 16 insertions(+), 16 deletions(-)
>
> diff --git a/packfile.c b/packfile.c
> index 813584646f..4028763947 100644
> --- a/packfile.c
> +++ b/packfile.c
> @@ -1536,24 +1536,24 @@ int packed_object_info(struct repository *r, struct packed_git *p,
>  			type = OBJ_BAD;
>  	} else {
>  		type = unpack_object_header(p, &w_curs, &curpos, &size);
> -	}

Omitted from the context here is that the "if" statement which this "else" belongs to is "if (oi->contentp)", so placing the "if (oi->sizep)" conditional within the else block is equivalent to the pre-image as you suggest.

With that additional detail, this patch looks obviously correct to me.

Thanks, Taylor

Previous: Eric WongNext: Eric Wong
Message 26 of 51 in “cat-file speedups”
  1. 00/10 cat-file speedupsEric Wong, Jul 15, 2024
  2. 01/10 packfile: move sizep computationEric Wong, Jul 15, 2024
  3. Patrick SteinhardtJul 24, 2024
  4. 02/10 packfile: allow content-limit for cat-fileEric Wong, Jul 15, 2024
  5. Patrick SteinhardtJul 24, 2024
  6. Eric WongJul 26, 2024
  7. 03/10 packfile: fix off-by-one in content_limit comparisonEric Wong, Jul 15, 2024
  8. Patrick SteinhardtJul 24, 2024
  9. Eric WongJul 26, 2024
  10. 04/10 packfile: inline cache_or_unpack_entryEric Wong, Jul 15, 2024
  11. 05/10 cat-file: use delta_base_cache entries directlyEric Wong, Jul 15, 2024
  12. Patrick SteinhardtJul 24, 2024
  13. Eric WongJul 26, 2024
  14. assert vs BUG [was: [PATCH v1 05/10] cat-file: use delta_base_cache entries directly]Eric Wong, Aug 18, 2024
  15. Junio C HamanoAug 19, 2024
  16. 06/10 packfile: packed_object_info avoids packed_to_object_typeEric Wong, Jul 15, 2024
  17. Patrick SteinhardtJul 24, 2024
  18. Eric WongJul 26, 2024
  19. 07/10 object_info: content_limit only applies to blobsEric Wong, Jul 15, 2024
  20. 08/10 cat-file: batch-command uses content_limitEric Wong, Jul 15, 2024
  21. 09/10 cat-file: batch_write: use size_t for lengthEric Wong, Jul 15, 2024
  22. 10/10 cat-file: use writev(2) if availableEric Wong, Jul 15, 2024
  23. Patrick SteinhardtJul 24, 2024
  24. 00/10 cat-file speedupsEric Wong, Aug 23, 2024
  25. 01/10 packfile: move sizep computationEric Wong, Aug 23, 2024
  26. Taylor BlauSep 17, 2024
  27. 02/10 packfile: allow content-limit for cat-fileEric Wong, Aug 23, 2024
  28. Junio C HamanoAug 26, 2024
  29. Eric WongAug 27, 2024
  30. Taylor BlauSep 17, 2024
  31. Junio C HamanoSep 17, 2024
  32. 03/10 packfile: fix off-by-one in content_limit comparisonEric Wong, Aug 23, 2024
  33. Junio C HamanoAug 26, 2024
  34. Taylor BlauSep 17, 2024
  35. 04/10 packfile: inline cache_or_unpack_entryEric Wong, Aug 23, 2024
  36. Junio C HamanoAug 26, 2024
  37. Eric WongOct 6, 2024
  38. 05/10 cat-file: use delta_base_cache entries directlyEric Wong, Aug 23, 2024
  39. Junio C HamanoAug 26, 2024
  40. Junio C HamanoAug 26, 2024
  41. 06/10 packfile: packed_object_info avoids packed_to_object_typeEric Wong, Aug 23, 2024
  42. Junio C HamanoAug 26, 2024
  43. 07/10 object_info: content_limit only applies to blobsEric Wong, Aug 23, 2024
  44. Junio C HamanoAug 26, 2024
  45. 08/10 cat-file: batch-command uses content_limitEric Wong, Aug 23, 2024
  46. Junio C HamanoAug 26, 2024
  47. 09/10 cat-file: batch_write: use size_t for lengthEric Wong, Aug 23, 2024
  48. Junio C HamanoAug 27, 2024
  49. 10/10 cat-file: use writev(2) if availableEric Wong, Aug 23, 2024
  50. Junio C HamanoAug 27, 2024
  51. Junio C HamanoAug 27, 2024

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