packfile: use object_id in find_pack_entry_one()
The main function we use to search a pack index for an object is find_pack_entry_one(). That function still takes a bare pointer to the hash, despite the fact that its underlying bsearch_pack() function needs an object_id struct. And so we end up making an extra copy of the hash into the struct just to do a lookup. As it turns out, all callers but one already have such an object_id. So we can just take a pointer to that struct and use it directly. This avoids the extra copy and provides a more type-safe interface. The one exception is get_delta_base() in packfile.c, when we are chasing a REF_DELTA from inside the pack (and thus we have a pointer directly to the mmap'd pack memory, not a struct). We can just bump the hashcpy() from inside find_pack_entry_one() to this one caller that needs it. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Taylor Blau <me@ttaylorr.com>
Jeff King committed
Oct 25, 2024 at 03:06 UTC
479ab76c9ffbd35585a1506ac5c99fe218df70b9
7 files changed
+18
-18
builtin/pack-objects.c
+2
-2
index 0fc0680b40..0800714267 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -1556,7 +1556,7 @@ static int want_object_in_pack_one(struct packed_git *p,
if (p == *found_pack)
offset = *found_offset;
else
- offset = find_pack_entry_one(oid->hash, p);
+ offset = find_pack_entry_one(oid, p);
if (offset) {
if (!*found_pack) {
@@ -3984,7 +3984,7 @@ static int has_sha1_pack_kept_or_nonlocal(const struct object_id *oid)
while (p) {
if ((!p->pack_local || p->pack_keep ||
p->pack_keep_in_core) &&
- find_pack_entry_one(oid->hash, p)) {
+ find_pack_entry_one(oid, p)) {
last_found = p;
return 1;
}
connected.c
+2
-2
index 87cc4b57a1..a9e2e13995 100644
--- a/connected.c
+++ b/connected.c
@@ -78,7 +78,7 @@ int check_connected(oid_iterate_fn fn, void *cb_data,
for (p = get_all_packs(the_repository); p; p = p->next) {
if (!p->pack_promisor)
continue;
- if (find_pack_entry_one(oid->hash, p))
+ if (find_pack_entry_one(oid, p))
goto promisor_pack_found;
}
/*
@@ -144,7 +144,7 @@ no_promisor_pack_found:
* are sure the ref is good and not sending it to
* rev-list for verification.
*/
- if (new_pack && find_pack_entry_one(oid->hash, new_pack))
+ if (new_pack && find_pack_entry_one(oid, new_pack))
continue;
if (fprintf(rev_list_in, "%s\n", oid_to_hex(oid)) < 0)
midx.c
+1
-1
index 479812cb9b..e82d4f2e65 100644
--- a/midx.c
+++ b/midx.c
@@ -987,7 +987,7 @@ int verify_midx_file(struct repository *r, const char *object_dir, unsigned flag
}
m_offset = e.offset;
- p_offset = find_pack_entry_one(oid.hash, e.p);
+ p_offset = find_pack_entry_one(&oid, e.p);
if (m_offset != p_offset)
midx_report(_("incorrect object offset for oid[%d] = %s: %"PRIx64" != %"PRIx64),
pack-bitmap.c
+2
-2
index 32b222a7af..4fa9dfc771 100644
--- a/pack-bitmap.c
+++ b/pack-bitmap.c
@@ -935,7 +935,7 @@ static inline int bitmap_position_packfile(struct bitmap_index *bitmap_git,
const struct object_id *oid)
{
uint32_t pos;
- off_t offset = find_pack_entry_one(oid->hash, bitmap_git->pack);
+ off_t offset = find_pack_entry_one(oid, bitmap_git->pack);
if (!offset)
return -1;
@@ -1609,7 +1609,7 @@ static int in_bitmapped_pack(struct bitmap_index *bitmap_git,
if (bsearch_midx(&object->oid, bitmap_git->midx, NULL))
return 1;
} else {
- if (find_pack_entry_one(object->oid.hash, bitmap_git->pack) > 0)
+ if (find_pack_entry_one(&object->oid, bitmap_git->pack) > 0)
return 1;
}
}
packfile.c
+8
-8
index c51eab15a5..005ca670b4 100644
--- a/packfile.c
+++ b/packfile.c
@@ -1239,7 +1239,9 @@ off_t get_delta_base(struct packed_git *p,
*curpos += used;
} else if (type == OBJ_REF_DELTA) {
/* The base entry _must_ be in the same pack */
- base_offset = find_pack_entry_one(base_info, p);
+ struct object_id oid;
+ hashcpy(oid.hash, base_info, the_repository->hash_algo);
+ base_offset = find_pack_entry_one(&oid, p);
*curpos += the_hash_algo->rawsz;
} else
die("I am totally screwed");
@@ -1971,11 +1973,10 @@ off_t nth_packed_object_offset(const struct packed_git *p, uint32_t n)
}
}
-off_t find_pack_entry_one(const unsigned char *sha1,
- struct packed_git *p)
+off_t find_pack_entry_one(const struct object_id *oid,
+ struct packed_git *p)
{
const unsigned char *index = p->index_data;
- struct object_id oid;
uint32_t result;
if (!index) {
@@ -1983,8 +1984,7 @@ off_t find_pack_entry_one(const unsigned char *sha1,
return 0;
}
- hashcpy(oid.hash, sha1, the_repository->hash_algo);
- if (bsearch_pack(&oid, p, &result))
+ if (bsearch_pack(oid, p, &result))
return nth_packed_object_offset(p, result);
return 0;
}
@@ -2016,7 +2016,7 @@ struct packed_git *find_oid_pack(const struct object_id *oid,
struct packed_git *p;
for (p = packs; p; p = p->next) {
- if (find_pack_entry_one(oid->hash, p))
+ if (find_pack_entry_one(oid, p))
return p;
}
return NULL;
@@ -2033,7 +2033,7 @@ static int fill_pack_entry(const struct object_id *oid,
oidset_contains(&p->bad_objects, oid))
return 0;
- offset = find_pack_entry_one(oid->hash, p);
+ offset = find_pack_entry_one(oid, p);
if (!offset)
return 0;
packfile.h
+2
-2
index 3baffa940c..08f88a7ff5 100644
--- a/packfile.h
+++ b/packfile.h
@@ -154,10 +154,10 @@ int nth_packed_object_id(struct object_id *, struct packed_git *, uint32_t n);
off_t nth_packed_object_offset(const struct packed_git *, uint32_t n);
/*
- * If the object named sha1 is present in the specified packfile,
+ * If the object named by oid is present in the specified packfile,
* return its offset within the packfile; otherwise, return 0.
*/
-off_t find_pack_entry_one(const unsigned char *sha1, struct packed_git *);
+off_t find_pack_entry_one(const struct object_id *oid, struct packed_git *);
int is_pack_valid(struct packed_git *);
void *unpack_entry(struct repository *r, struct packed_git *, off_t, enum object_type *, unsigned long *);
t/helper/test-find-pack.c
+1
-1
index 14b2b0c12c..85a69a4e55 100644
--- a/t/helper/test-find-pack.c
+++ b/t/helper/test-find-pack.c
@@ -40,7 +40,7 @@ int cmd__find_pack(int argc, const char **argv)
die("cannot parse %s as an object name", argv[0]);
for (p = get_all_packs(the_repository); p; p = p->next)
- if (find_pack_entry_one(oid.hash, p)) {
+ if (find_pack_entry_one(&oid, p)) {
printf("%s\n", p->pack_name);
actual_count++;
}