time, nsec – time in seconds and nanoseconds since epoch|
long time(long *tp)
Both time and nsec return the time since the epoch 00:00:00 GMT,
Jan. 1, 1970. The return value of the former is in seconds and
the latter in nanoseconds. For time, if tp is not zero then *tp
is also set to the answer. |
Times from time should be stored in and treated as ulongs; this extends the range of valid times into the year 2106.
Time simply calls nsec and returns the value divided by 1000000000.
Nsec is a system call. Previous implementations read /dev/bintime,
opening that file when first called, and maintaining a static
file descriptor; however, the maintenance of file descriptors
in the face of process forks is overly complex and prone to error.