timespec − interval for a timer with nanosecond precision
Standard C library (libc)
#include <time.h>
struct
itimerspec {
struct timespec it_interval; /* Interval for periodic
timer */
struct timespec it_value; /* Initial expiration */
};
Describes the initial expiration of a timer, and its interval, in seconds and nanoseconds.
Linux.
The following header also provides this type: <sys/timerfd.h>.
timerfd_create(2), timer_settime(2), timespec(3type)