(** Bounded queue based on simple synchronization primitives. This is not the fastest queue but it should be versatile. *) val create : ?measure:('a -> int) -> high_watermark:int -> unit -> 'a Bounded_queue.t (** [create ~high_watermark ()] creates a new bounded queue based on {!Sync_queue}. @param measure maps each item to its signal count (e.g. number of spans in a batch). Used to report accurate signal counts when items are dropped. Default: [fun _ -> 1]. *)