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make object_directory.loose_objects_subdir_seen a bitmap

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There's no point in using 8 bits per-directory when 1 bit
will do.  This saves us 224 bytes per object directory, which
ends up being 22MB when dealing with 100K alternates.

Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Eric Wong
2021-07-07 23:10:17 +00:00
committed by Junio C Hamano
parent 407532f82d
commit 33f379eee6
2 changed files with 9 additions and 4 deletions
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2
object-store.h
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@ -22,7 +22,7 @@ struct object_directory {
*
* Be sure to call odb_load_loose_cache() before using.
*/
char loose_objects_subdir_seen[256];
uint32_t loose_objects_subdir_seen[8]; /* 256 bits */
struct oid_array loose_objects_cache[256];
/*