Function get_delta

http-push.c:1342–1390

}

static int get_delta(struct rev_info *revs, struct remote_lock *lock)
{
	struct commit *commit;
	struct object_list **p = &objects;
	int count = 0;

	while ((commit = get_revision(revs)) != NULL) {
		p = process_tree(repo_get_commit_tree(the_repository, commit),
				 p);
		commit->object.flags |= LOCAL;
		if (!(commit->object.flags & UNINTERESTING))
			count += add_send_request(&commit->object, lock);
	}

	for (size_t i = 0; i < revs->pending.nr; i++) {
		struct object_array_entry *entry = revs->pending.objects + i;
		struct object *obj = entry->item;
		const char *name = entry->name;

		if (obj->flags & (UNINTERESTING | SEEN))
			continue;
		if (obj->type == OBJ_TAG) {
			obj->flags |= SEEN;
			p = add_one_object(obj, p);
			continue;
		}
		if (obj->type == OBJ_TREE) {
			p = process_tree((struct tree *)obj, p);
			continue;
		}
		if (obj->type == OBJ_BLOB) {
			p = process_blob((struct blob *)obj, p);
			continue;
		}
		die("unknown pending object %s (%s)", oid_to_hex(&obj->oid), name);
	}

	while (objects) {
		struct object_list *next = objects->next;

		if (!(objects->item->flags & UNINTERESTING))
			count += add_send_request(objects->item, lock);

		free(objects);
		objects = next;
	}

	return count;
}

static int update_remote(const struct object_id *oid, struct remote_lock *lock)
{