TIME(2) TIME(2)
NAME
time, nsec - time in seconds and nanoseconds since epoch
SYNOPSIS
#include <u.h>
#include <libc.h>
long time(long *tp)
vlong nsec(void)
DESCRIPTION
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 main-
taining a static file descriptor; however, the maintenance
of file descriptors in the face of process forks is overly
complex and prone to error.
SOURCE
/sys/src/libc/9sys/time.c
/sys/src/libc/9syscall
SEE ALSO
cputime(2), cons(3)
DIAGNOSTICS
Sets errstr.
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