`sig
type t = Realtime | Monotonic | Process_cpu | Process_thread
val all : Posix_clock.t list
val to_string : Posix_clock.t -> string
val getres : (Posix_clock.t -> Core.Std.Int63.t) Core.Std.Or_error.t
val gettime : (Posix_clock.t -> Core.Std.Int63.t) Core.Std.Or_error.t
val min_interval : (Posix_clock.t -> Core.Std.Int63.t) Core.Std.Or_error.t
val mean_gettime_cost :
(measure:Posix_clock.t -> using:Posix_clock.t -> Core.Std.Int63.t)
Core.Std.Or_error.t
module Time_stamp_counter :
sig
type t
val rdtsc : unit -> Posix_clock.Time_stamp_counter.t
val rdtscp : unit -> Posix_clock.Time_stamp_counter.t
val diff :
Posix_clock.Time_stamp_counter.t ->
Posix_clock.Time_stamp_counter.t -> int
end
end`