367     struct clock_string<process_real_cpu_clock, CharT>  struct
369       static std::basic_string<CharT> name()  in name()
378       static std::basic_string<CharT> since()  in since()
390     struct clock_string<process_user_cpu_clock, CharT>  struct
392       static std::basic_string<CharT> name()  in name()
401       static std::basic_string<CharT> since()  in since()
412     struct clock_string<process_system_cpu_clock, CharT>  struct
414       static std::basic_string<CharT> name()  in name()
423       static std::basic_string<CharT> since()  in since()
434     struct clock_string<process_cpu_clock, CharT>  struct
436       static std::basic_string<CharT> name()  in name()
444       static std::basic_string<CharT> since()  in since()