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ocaml-core / base / core / extended / lib / posix_clock.mli

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(* Note: this module is only compiled if the system supports Posix Timers *)

type t =
  | Realtime
  | Monotonic
  | Process_cpu
  | Process_thread

val all : t list

val to_string : t -> string

(* returns the resulution of the given clock in nanoseconds *)
val getres : t -> int

(* returns the current value of the given clock in nanoseconds *)
val gettime : t -> int

(* sleeps the current thread for the specified number of nanoseconds *)
(*val nanosleep : t -> int -> unit*)

(* [min_interval t] returns the minimum measurable interval for t in nanoseconds *)
val min_interval : t -> int

(* [cost t] returns the cost of calling gettime with the given t int nanoseconds *)
val mean_gettime_cost : measure:t -> using:t -> int