> */ private static array $map = []; /** * @param \Fiber $fiber * @param PromiseInterface $promise */ public static function setPromise(\Fiber $fiber, PromiseInterface $promise): void { self::$map[\spl_object_id($fiber)] = $promise; } /** * @param \Fiber $fiber */ public static function unsetPromise(\Fiber $fiber): void { unset(self::$map[\spl_object_id($fiber)]); } /** * @param \Fiber $fiber * @return ?PromiseInterface */ public static function getPromise(\Fiber $fiber): ?PromiseInterface { return self::$map[\spl_object_id($fiber)] ?? null; } }