struct_rusage = ref object
  ru_utime*: float
  ru_stime*: float
  ru_maxrss*: int
  ru_ixrss*: int
  ru_idrss*: int
  ru_isrss*: int
  ru_minflt*: int
  ru_majflt*: int
  ru_nswap*: int
  ru_inblock*: int
  ru_oublock*: int
  ru_msgsnd*: int
  ru_msgrcv*: int
  ru_nsignals*: int
  ru_nvcsw*: int
  ru_nivcsw*: int