TIME
Section: GNU Awk Extension Modules (3am)
Updated: Nov 21 2019
Page Index
NAME
time - time functions for gawk
SYNOPSIS
@load "time"
time = gettimeofday()
ret = sleep(amount)
CAUTION
This extension is deprecated in favor of the
timex
extension in the
gawkextlib
project. In the next major release of
gawk,
loading it will issue a warning.
It will be removed from the
gawk
distribution in the major release after the next one.
DESCRIPTION
The
time
extension adds two functions named
gettimeofday()
and
sleep(),
as follows.
- gettimeofday()
-
This function returns the number of seconds since the Epoch
as a floating-point value. It should have subsecond precision.
It returns -1 upon error and sets
ERRNO
to indicate the problem.
- sleep(seconds)
-
This function attempts to sleep for the given amount of seconds, which
may include a fractional portion.
If
seconds
is negative, or the attempt to sleep fails,
then it returns -1 and sets
ERRNO.
Otherwise, the function should return 0 after sleeping
for the indicated amount of time.
EXAMPLE
@load "time"
...
printf "It is now %g seconds since the Epoch\n", gettimeofday()
printf "Pausing for a while... " ; sleep(2.5) ; print "done"
SEE ALSO
GAWK: Effective AWK Programming,
filefuncs(3am),
fnmatch(3am),
fork(3am),
inplace(3am),
ordchr(3am),
readdir(3am),
readfile(3am),
revoutput(3am),
rwarray(3am).
gettimeofday(2),
nanosleep(2),
select(2).
AUTHOR
Arnold Robbins,
arnold@skeeve.com.
COPYING PERMISSIONS
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Free Software Foundation, Inc.
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