Function IDX_delete_indices

src/jrd/idx.cpp:1056–1096

void IDX_delete_indices(thread_db* tdbb, jrd_rel* relation, RelationPages* relPages)
{
/**************************************
 *
 *	I D X _ d e l e t e _ i n d i c e s
 *
 **************************************
 *
 * Functional description
 *	Delete all known indices in preparation for deleting a
 *	complete relation.
 *
 **************************************/
	SET_TDBB(tdbb);

	fb_assert(relPages->rel_index_root);

	WIN window(relPages->rel_pg_space_id, relPages->rel_index_root);
	index_root_page* root = (index_root_page*) CCH_FETCH(tdbb, &window, LCK_write, pag_root);

	const bool is_temp = (relation->rel_flags & REL_temp_conn) && (relPages->rel_instance_id != 0);

	for (USHORT i = 0; i < root->irt_count; i++)
	{
		const bool tree_exists = BTR_delete_index(tdbb, &window, i);
		root = (index_root_page*) CCH_FETCH(tdbb, &window, LCK_write, pag_root);

		if (is_temp && tree_exists)
		{
			IndexLock* idx_lock = CMP_get_index_lock(tdbb, relation, i);
			if (idx_lock)
			{
				if (!--idx_lock->idl_count) {
					LCK_release(tdbb, idx_lock->idl_lock);
				}
			}
		}
	}

	CCH_RELEASE(tdbb, &window);
}


void IDX_erase(thread_db* tdbb, record_param* rpb, jrd_tra* transaction)