_get_cron_lock(): string|int|false

64function _get_cron_lock() {65	global $wpdb;66 67	$value = 0;68	if ( wp_using_ext_object_cache() ) {69		/*70		 * Skip local cache and force re-fetch of doing_cron transient71		 * in case another process updated the cache.72		 */73		$value = wp_cache_get( 'doing_cron', 'transient', true );74	} else {75		$row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", '_transient_doing_cron' ) );76		if ( is_object( $row ) ) {77			$value = $row->option_value;78		}79	}80 81	return $value;82}