Function add_preferred_base

builtin/pack-objects.c:2126–2157

}

static void add_preferred_base(struct object_id *oid)
{
	struct pbase_tree *it;
	void *data;
	unsigned long size;
	size_t size_st = 0;
	struct object_id tree_oid;

	if (window <= num_preferred_base++)
		return;

	data = odb_read_object_peeled(the_repository->objects, oid,
				      OBJ_TREE, &size_st, &tree_oid);
	size = cast_size_t_to_ulong(size_st);
	if (!data)
		return;

	for (it = pbase_tree; it; it = it->next) {
		if (oideq(&it->pcache.oid, &tree_oid)) {
			free(data);
			return;
		}
	}

	CALLOC_ARRAY(it, 1);
	it->next = pbase_tree;
	pbase_tree = it;

	oidcpy(&it->pcache.oid, &tree_oid);
	it->pcache.tree_data = data;
	it->pcache.tree_size = size;
}

static void cleanup_preferred_base(void)
{