signature MLTON_RUSAGE =
   sig
      type t = {utime: Time.time, (* user time *)
                stime: Time.time} (* system time *)

      val measureGC: bool -> unit         
      val rusage: unit -> {children: t, gc: t, self: t}
   end

• type t

corresponds to a subset of the C struct rusage.

• measureGC b

controls whether garbage collection time is measured during program execution. This affects the behavior of both rusage and Timer.checkCPUTimes. Note that garbage collection time is always measured when either gc-messages or gc-summary is given as a runtime system option.

• rusage ()

corresponds to the C getrusage function. It returns the resource usage of the exited children, the garbage collector, and the process itself. The process time (self) includes the gc time.