NAME

timespec_get — get current calendar time

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <time.h>

int
timespec_get(struct timespec *ts, int base);

DESCRIPTION

The timespec_get function sets the interval pointed to by ts to hold the current calendar time based on the specified time base in base.

The base TIME_UTC returns the time since the epoch. This time is expressed in seconds and nanoseconds since midnight (0 hour), January 1, 1970. In FreeBSD, this corresponds to CLOCK_REALTIME.

The base TIME_MONOTONIC returns a monotonically-increasing time since an unspecified point in the past. In FreeBSD, this corresponds to CLOCK_MONOTONIC.

RETURN VALUES

The timespec_get function returns the passed value of base if successful, otherwise 0 on failure.

SEE ALSO

clock_gettime(2), gettimeofday(2), time(3), timespec_getres(3)

STANDARDS

The timespec_get function with a base of TIME_UTC conforms to ISO/IEC 9899:2011 (“ISO C11”).

HISTORY

This interface first appeared in FreeBSD 12.

AUTHORS

Kamil Rytarowski <kamil@NetBSD.org>
Warner Losh <imp@FreeBSD.org>