101 lines
2.6 KiB
Plaintext
101 lines
2.6 KiB
Plaintext
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.TH TIME 3am "Jul 11 2022" "Free Software Foundation" "GNU Awk Extension Modules"
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.SH NAME
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time \- time functions for gawk
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.SH SYNOPSIS
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.ft CW
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@load "time"
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.sp
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time = gettimeofday()
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.br
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ret = sleep(amount)
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.ft R
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.SH CAUTION
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This extension is deprecated in favor of the
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.B timex
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extension in the
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.I gawkextlib
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project.
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Loading it issues a warning.
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It will be removed from the
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.I gawk
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distribution in the next major release.
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.SH DESCRIPTION
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The
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.I time
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extension adds two functions named
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.B gettimeofday()
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and
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.BR sleep() ,
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as follows.
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.TP
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.B gettimeofday()
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This function returns the number of seconds since the Epoch
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as a floating-point value. It should have subsecond precision.
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It returns \-1 upon error and sets
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.B ERRNO
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to indicate the problem.
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.TP
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.BI sleep( seconds )
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This function attempts to sleep for the given amount of seconds, which
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may include a fractional portion.
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If
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.I seconds
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is negative, or the attempt to sleep fails,
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then it returns \-1 and sets
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.BR ERRNO .
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Otherwise, the function should return 0 after sleeping
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for the indicated amount of time.
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.\" .SH NOTES
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.\" .SH BUGS
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.SH EXAMPLE
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.ft CW
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.nf
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@load "time"
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\&...
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printf "It is now %g seconds since the Epoch\en", gettimeofday()
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printf "Pausing for a while... " ; sleep(2.5) ; print "done"
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.fi
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.ft R
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.SH "SEE ALSO"
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.IR "GAWK: Effective AWK Programming" ,
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.IR filefuncs (3am),
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.IR fnmatch (3am),
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.IR fork (3am),
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.IR inplace (3am),
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.IR ordchr (3am),
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.IR readdir (3am),
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.IR readfile (3am),
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.IR revoutput (3am),
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.IR rwarray (3am).
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.PP
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.IR gettimeofday (2),
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.IR nanosleep (2),
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.IR select (2).
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.SH AUTHOR
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Arnold Robbins,
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.BR arnold@skeeve.com .
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.SH COPYING PERMISSIONS
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Copyright \(co 2012, 2013, 2018, 2022,
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Free Software Foundation, Inc.
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.PP
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Permission is granted to make and distribute verbatim copies of
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this manual page provided the copyright notice and this permission
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notice are preserved on all copies.
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.ig
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Permission is granted to process this file through troff and print the
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results, provided the printed document carries copying permission
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notice identical to this one except for the removal of this paragraph
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(this paragraph not being relevant to the printed manual page).
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..
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.PP
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Permission is granted to copy and distribute modified versions of this
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manual page under the conditions for verbatim copying, provided that
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the entire resulting derived work is distributed under the terms of a
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permission notice identical to this one.
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.PP
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Permission is granted to copy and distribute translations of this
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manual page into another language, under the above conditions for
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modified versions, except that this permission notice may be stated in
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a translation approved by the Foundation.
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.\" vim: set filetype=nroff :
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