From 3df28caefb2193fb7bbc87a427a620d96d508c8d Mon Sep 17 00:00:00 2001 From: Jeff King Date: Thu, 20 Jun 2019 03:41:03 -0400 Subject: [PATCH] pack-objects: convert packlist_find() to use object_id We take a raw hash pointer, but most of our callers have a "struct object_id" already. Let's switch to taking the full struct, which will let us continue removing uses of raw sha1 buffers. There are two callers that do need special attention: - in rebuild_existing_bitmaps(), we need to switch to nth_packed_object_oid(). This incurs an extra hash copy over pointing straight to the mmap'd sha1, but it shouldn't be measurable compared to the rest of the operation. - in can_reuse_delta() we already spent the effort to copy the sha1 into a "struct object_id", but now we just have to do so a little earlier in the function (we can't easily convert that function's callers because they may be pointing at mmap'd REF_DELTA blocks). Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- builtin/pack-objects.c | 19 ++++++++++--------- pack-bitmap-write.c | 2 +- pack-bitmap.c | 6 +++--- pack-objects.c | 4 ++-- pack-objects.h | 2 +- 5 files changed, 17 insertions(+), 16 deletions(-) diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c index b2be8869c2..c95693fd4b 100644 --- a/builtin/pack-objects.c +++ b/builtin/pack-objects.c @@ -606,12 +606,12 @@ static int mark_tagged(const char *path, const struct object_id *oid, int flag, void *cb_data) { struct object_id peeled; - struct object_entry *entry = packlist_find(&to_pack, oid->hash, NULL); + struct object_entry *entry = packlist_find(&to_pack, oid, NULL); if (entry) entry->tagged = 1; if (!peel_ref(path, &peeled)) { - entry = packlist_find(&to_pack, peeled.hash, NULL); + entry = packlist_find(&to_pack, &peeled, NULL); if (entry) entry->tagged = 1; } @@ -996,7 +996,7 @@ static int have_duplicate_entry(const struct object_id *oid, { struct object_entry *entry; - entry = packlist_find(&to_pack, oid->hash, index_pos); + entry = packlist_find(&to_pack, oid, index_pos); if (!entry) return 0; @@ -1494,11 +1494,13 @@ static int can_reuse_delta(const unsigned char *base_sha1, if (!base_sha1) return 0; + oidread(&base_oid, base_sha1); + /* * First see if we're already sending the base (or it's explicitly in * our "excluded" list). */ - base = packlist_find(&to_pack, base_sha1, NULL); + base = packlist_find(&to_pack, &base_oid, NULL); if (base) { if (!in_same_island(&delta->idx.oid, &base->idx.oid)) return 0; @@ -1511,7 +1513,6 @@ static int can_reuse_delta(const unsigned char *base_sha1, * even if it was buried too deep in history to make it into the * packing list. */ - oidread(&base_oid, base_sha1); if (thin && bitmap_has_oid_in_uninteresting(bitmap_git, &base_oid)) { if (use_delta_islands) { if (!in_same_island(&delta->idx.oid, &base_oid)) @@ -2571,7 +2572,7 @@ static void add_tag_chain(const struct object_id *oid) * it was included via bitmaps, we would not have parsed it * previously). */ - if (packlist_find(&to_pack, oid->hash, NULL)) + if (packlist_find(&to_pack, oid, NULL)) return; tag = lookup_tag(the_repository, oid); @@ -2595,7 +2596,7 @@ static int add_ref_tag(const char *path, const struct object_id *oid, int flag, if (starts_with(path, "refs/tags/") && /* is a tag? */ !peel_ref(path, &peeled) && /* peelable? */ - packlist_find(&to_pack, peeled.hash, NULL)) /* object packed? */ + packlist_find(&to_pack, &peeled, NULL)) /* object packed? */ add_tag_chain(oid); return 0; } @@ -2795,7 +2796,7 @@ static void show_object(struct object *obj, const char *name, void *data) for (p = strchr(name, '/'); p; p = strchr(p + 1, '/')) depth++; - ent = packlist_find(&to_pack, obj->oid.hash, NULL); + ent = packlist_find(&to_pack, &obj->oid, NULL); if (ent && depth > oe_tree_depth(&to_pack, ent)) oe_set_tree_depth(&to_pack, ent, depth); } @@ -3026,7 +3027,7 @@ static void loosen_unused_packed_objects(void) for (i = 0; i < p->num_objects; i++) { nth_packed_object_oid(&oid, p, i); - if (!packlist_find(&to_pack, oid.hash, NULL) && + if (!packlist_find(&to_pack, &oid, NULL) && !has_sha1_pack_kept_or_nonlocal(&oid) && !loosened_object_can_be_discarded(&oid, p->mtime)) if (force_object_loose(&oid, p->mtime)) diff --git a/pack-bitmap-write.c b/pack-bitmap-write.c index 59aa201043..0637378533 100644 --- a/pack-bitmap-write.c +++ b/pack-bitmap-write.c @@ -144,7 +144,7 @@ static inline void reset_all_seen(void) static uint32_t find_object_pos(const struct object_id *oid) { - struct object_entry *entry = packlist_find(writer.to_pack, oid->hash, NULL); + struct object_entry *entry = packlist_find(writer.to_pack, oid, NULL); if (!entry) { die("Failed to write bitmap index. Packfile doesn't have full closure " diff --git a/pack-bitmap.c b/pack-bitmap.c index 6069b2fe55..ff1f07e249 100644 --- a/pack-bitmap.c +++ b/pack-bitmap.c @@ -1057,13 +1057,13 @@ int rebuild_existing_bitmaps(struct bitmap_index *bitmap_git, reposition = xcalloc(num_objects, sizeof(uint32_t)); for (i = 0; i < num_objects; ++i) { - const unsigned char *sha1; + struct object_id oid; struct revindex_entry *entry; struct object_entry *oe; entry = &bitmap_git->pack->revindex[i]; - sha1 = nth_packed_object_sha1(bitmap_git->pack, entry->nr); - oe = packlist_find(mapping, sha1, NULL); + nth_packed_object_oid(&oid, bitmap_git->pack, entry->nr); + oe = packlist_find(mapping, &oid, NULL); if (oe) reposition[i] = oe_in_pack_pos(mapping, oe) + 1; diff --git a/pack-objects.c b/pack-objects.c index ce33b8906e..49fdf52ea6 100644 --- a/pack-objects.c +++ b/pack-objects.c @@ -68,7 +68,7 @@ static void rehash_objects(struct packing_data *pdata) } struct object_entry *packlist_find(struct packing_data *pdata, - const unsigned char *sha1, + const struct object_id *oid, uint32_t *index_pos) { uint32_t i; @@ -77,7 +77,7 @@ struct object_entry *packlist_find(struct packing_data *pdata, if (!pdata->index_size) return NULL; - i = locate_object_entry_hash(pdata, sha1, &found); + i = locate_object_entry_hash(pdata, oid->hash, &found); if (index_pos) *index_pos = i; diff --git a/pack-objects.h b/pack-objects.h index 6fde7ce27c..857d43850b 100644 --- a/pack-objects.h +++ b/pack-objects.h @@ -187,7 +187,7 @@ struct object_entry *packlist_alloc(struct packing_data *pdata, uint32_t index_pos); struct object_entry *packlist_find(struct packing_data *pdata, - const unsigned char *sha1, + const struct object_id *oid, uint32_t *index_pos); static inline uint32_t pack_name_hash(const char *name)