All these functions can raise Unix_error.
val get_time : (t ‑> Core__.Import.Time.Span.t) Core__.Import.Or_error.t
val set_time : (t ‑> Core__.Import.Time.Span.t ‑> unit) Core__.Import.Or_error.t
val get_resolution : (t ‑> Core__.Import.Time.Span.t) Core__.Import.Or_error.t
val get_process_clock : (unit ‑> t) Core__.Import.Or_error.t
get_process_clock
the clock measuring the CPU-time of a process.
val get_thread_clock : (unit ‑> t) Core__.Import.Or_error.t
get_thread_clock
the clock measuring the CPU-time of the current thread.