extern int do_macos_sysctl(int update_every, usec_t dt);
extern int do_macos_mach_smi(int update_every, usec_t dt);
extern int do_macos_iokit(int update_every, usec_t dt);
extern int do_macos_sysctl(int update_every, usec_t dt);
extern int do_macos_mach_smi(int update_every, usec_t dt);
extern int do_macos_iokit(int update_every, usec_t dt);