_kern_get_cpuclockid
extern status_t _kern_get_cpuclockid(thread_id id, int32 which, clockid_t* _clockID);
status_t error = _kern_get_cpuclockid(pid, TEAM_ID, _clockID);
status_t error = _kern_get_cpuclockid(thread->id, THREAD_ID, _clockID);