diff options
| author | Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com> | 2022-08-14 19:55:10 +0300 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2022-08-26 20:13:58 +0300 |
| commit | 28cd730680dd7d5c0e0971827315bf8ae32f47b7 (patch) | |
| tree | b1a204d17a3affe9dddaf0801c636fc0737f2329 /pack-bitmap.h | |
| parent | 76f14b777c13ac8d8f6a2e5812945e725bea3d84 (diff) | |
pack-bitmap: prepare to read lookup table extension
Earlier change teaches Git to write bitmap lookup table. But Git
does not know how to parse them.
Teach Git to parse the existing bitmap lookup table. The older
versions of Git are not affected by it. Those versions ignore the
lookup table.
Mentored-by: Taylor Blau <me@ttaylorr.com>
Co-Mentored-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com>
Signed-off-by: Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'pack-bitmap.h')
| -rw-r--r-- | pack-bitmap.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/pack-bitmap.h b/pack-bitmap.h index cb065a263c..f0180b5276 100644 --- a/pack-bitmap.h +++ b/pack-bitmap.h @@ -23,6 +23,15 @@ struct bitmap_disk_header { #define NEEDS_BITMAP (1u<<22) +/* + * The width in bytes of a single triplet in the lookup table + * extension: + * (commit_pos, offset, xor_row) + * + * whose fields ar 32-, 64-, 32- bits wide, respectively. + */ +#define BITMAP_LOOKUP_TABLE_TRIPLET_WIDTH (16) + enum pack_bitmap_opts { BITMAP_OPT_FULL_DAG = 0x1, BITMAP_OPT_HASH_CACHE = 0x4, |