Time-specification structure
#include <time.h>
struct timespec {
time_t tv_sec;
long tv_nsec;
}
The timespec structure specifies a time in seconds and
nanoseconds.
The members include:
- tv_sec
- The number of seconds.
If specifying an absolute time, this member is the number of seconds since
1970.
- tv_nsec
- The number of nanoseconds.
POSIX 1003.1
nsec2timespec(),
timespec2nsec()