`object
method private virtual cleanup : unit
method destroy : unit
method fake_io : Unix.file_descr -> unit
method virtual iter : bool -> unit
method on_readable :
Unix.file_descr -> (Lwt_engine.event -> unit) -> Lwt_engine.event
method on_timer :
float -> bool -> (Lwt_engine.event -> unit) -> Lwt_engine.event
method on_writable :
Unix.file_descr -> (Lwt_engine.event -> unit) -> Lwt_engine.event
method readable_count : int
method private virtual register_readable :
Unix.file_descr -> (unit -> unit) -> unit Lazy.t
method private virtual register_timer :
float -> bool -> (unit -> unit) -> unit Lazy.t
method private virtual register_writable :
Unix.file_descr -> (unit -> unit) -> unit Lazy.t
method timer_count : int
method transfer : Lwt_engine.abstract -> unit
method writable_count : int
end`