45 lines
753 B
Plaintext
45 lines
753 B
Plaintext
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.TH TIME 2
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.SH NAME
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time, nsec \- time in seconds and nanoseconds since epoch
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.SH SYNOPSIS
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.B #include <u.h>
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.br
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.B #include <libc.h>
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.PP
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.nf
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.B
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long time(long *tp)
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.PP
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.B
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vlong nsec(void)
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.SH DESCRIPTION
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Both
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.I time
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and
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.I nsec
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return the time since the epoch 00:00:00 GMT, Jan. 1, 1970.
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The return value of the former is in seconds and the latter in nanoseconds.
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For
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.IR time ,
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if
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.I tp
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is not zero then
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.BI * tp
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is also set to the answer.
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.PP
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These functions work by reading
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.BR /dev/bintime ,
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opening that file when they are first called.
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.SH SOURCE
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.B /sys/src/libc/9sys/time.c
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.br
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.B /sys/src/libc/9sys/nsec.c
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.SH SEE ALSO
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.IR cputime (2),
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.IR cons (3)
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.SH DIAGNOSTICS
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Sets
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.IR errstr .
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.SH BUGS
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These routines maintain a static file descriptor.
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