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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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7
builtin/multi-pack-index.c
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@@ -87,6 +87,13 @@ static int git_multi_pack_index_write_config(const char *var, const char *value,
opts.flags &= ~MIDX_WRITE_BITMAP_HASH_CACHE;
}
if (!strcmp(var, "pack.writebitmaplookuptable")) {
if (git_config_bool(var, value))
opts.flags |= MIDX_WRITE_BITMAP_LOOKUP_TABLE;
else
opts.flags &= ~MIDX_WRITE_BITMAP_LOOKUP_TABLE;
}
/*
* We should never make a fall-back call to 'git_default_config', since
* this was already called in 'cmd_multi_pack_index()'.