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Merge branch 'ac/bitmap-lookup-table'

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The pack bitmap file gained a bitmap-lookup table to speed up
locating the necessary bitmap for a given commit.

* ac/bitmap-lookup-table:
  pack-bitmap-write: drop unused pack_idx_entry parameters
  bitmap-lookup-table: add performance tests for lookup table
  pack-bitmap: prepare to read lookup table extension
  pack-bitmap-write: learn pack.writeBitmapLookupTable and add tests
  pack-bitmap-write.c: write lookup table extension
  bitmap: move `get commit positions` code to `bitmap_writer_finish`
  Documentation/technical: describe bitmap lookup table extension
This commit is contained in:
Junio C Hamano
2022-09-05 18:33:39 -07:00
parent cf98b69053 969a564587
commit 3fe0121479
18 changed files with 1399 additions and 735 deletions
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3
midx.c
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@ -1119,6 +1119,9 @@ static int write_midx_bitmap(const char *midx_name,
if (flags & MIDX_WRITE_BITMAP_HASH_CACHE)
options |= BITMAP_OPT_HASH_CACHE;
if (flags & MIDX_WRITE_BITMAP_LOOKUP_TABLE)
options |= BITMAP_OPT_LOOKUP_TABLE;
/*
* Build the MIDX-order index based on pdata.objects (which is already
* in MIDX order; c.f., 'midx_pack_order_cmp()' for the definition of