sys/times.h - file access and modification times structure
The <sys/times.h> header defines the structure tms, which is returned by times() and includes at least the following members:
clock_t tms_utime user CPU time clock_t tms_stime system CPU time clock_t tms_cutime user CPU time of terminated child processes clock_t tms_cstime system CPU time of terminated child processes
The clock_t type is defined as described in <sys/types.h>.
The following is declared as a function and may also be defined as a macro. Function prototypes must be provided for use with an ISO C compiler.
clock_t times(struct tms *);