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object-store: factor out odb_loose_cache()

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Add and use a function for loading the entries of a loose object
subdirectory for a given object ID.  It frees callers from deriving the
fanout key; they can use the returned oid_array reference for lookups or
forward range scans.

Suggested-by: Jeff King <peff@peff.net>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe
2019-01-06 17:45:30 +01:00
committed by Junio C Hamano
parent ecbdaf0899
commit 0000d6543f
3 changed files with 21 additions and 8 deletions
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12
sha1-file.c
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@ -924,7 +924,6 @@ static int open_sha1_file(struct repository *r,
static int quick_has_loose(struct repository *r,
const unsigned char *sha1)
{
int subdir_nr = sha1[0];
struct object_id oid;
struct object_directory *odb;
@ -932,8 +931,7 @@ static int quick_has_loose(struct repository *r,
prepare_alt_odb(r);
for (odb = r->objects->odb; odb; odb = odb->next) {
odb_load_loose_cache(odb, subdir_nr);
if (oid_array_lookup(&odb->loose_objects_cache, &oid) >= 0)
if (oid_array_lookup(odb_loose_cache(odb, &oid), &oid) >= 0)
return 1;
}
return 0;
@ -2152,6 +2150,14 @@ static int append_loose_object(const struct object_id *oid, const char *path,
return 0;
}
struct oid_array *odb_loose_cache(struct object_directory *odb,
const struct object_id *oid)
{
int subdir_nr = oid->hash[0];
odb_load_loose_cache(odb, subdir_nr);
return &odb->loose_objects_cache;
}
void odb_load_loose_cache(struct object_directory *odb, int subdir_nr)
{
struct strbuf buf = STRBUF_INIT;