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Full Discussion: POSIX compliance...
Operating Systems OS X (Apple) POSIX compliance... Post 302976999 by drl on Sunday 10th of July 2016 09:43:01 PM
Old 07-10-2016
Hi.

Also:
Code:
            For delays of finer granularity than one second, the Time::HiRes
            module (from CPAN, and starting from Perl 5.8 part of the standard
            distribution) provides usleep(). You may also use Perl's
            four-argument version of select() leaving the first three
            arguments undefined, or you might be able to use the "syscall"
            interface to access setitimer(2) if your system supports it. See
            perlfaq8 for details.

Excerpt from perldoc -f sleep

For example:
Code:
#!/usr/bin/env perl

# @(#) p1       Demonstrate usleep;

use Time::HiRes qw( usleep nanosleep );

$microseconds = 2500000;
usleep($microseconds);

# nanosleep ($nanoseconds);

exit(0);

which would produce something like:
Code:
time ./p1

real    0m2.514s
user    0m0.008s
sys     0m0.000s

On an older OS/X:
Code:
OS, ker|rel, machine: Apple/BSD, Darwin 9.8.0, Power Macintosh
Distribution        : Mac OS X 10.5.8 (leopard, workstation)
perl 5.8.8

real    0m2.578s
user    0m0.045s
sys     0m0.021s

Best wishes ... cheers, drl

Last edited by drl; 07-10-2016 at 11:02 PM..
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Dancer::Timer(3pm)					User Contributed Perl Documentation					Dancer::Timer(3pm)

NAME
Dancer::Timer - a timer for Dancer SYNOPSIS
use Dancer::Timer; my $timer = Dancer::Timer->new(); my $time = $timer->tick; print "[$time]: Doing something "; # (time passes) $time = $timer->tick; print "[$time]: Doing something else "; # (time passes) $time = $timer->to_string; print "[$time]: Doing another thing "; DESCRIPTION
Dancer::Timer provides Dancer with a timing object to clock operations. For example, you might want a logging that shows you when each operation happened (at what time) to determine how long each operation was in order to know where to focus on for possible bugs or perhaps unnecessary slowness. Dancer uses Dancer::Timer in facilities that want to provide this for you. Any plugin author is more than welcome to use it as well. ATTRIBUTES
start_time Retains the starting time of the timer. The default value is when the object is created. It fetches that using "gettimeofday" from Time::HiRes. METHODS
init This method is called when "->new()" is called. It initializes the "start_time" attribute. tick Creates a tick in the timer and returns the interval between the "start_time" and now. to_string Same as "tick", just more expressive. AUTHOR
Alexis Sukrieh LICENSE AND COPYRIGHT
Copyright 2009-2010 Alexis Sukrieh. This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License. See http://dev.perl.org/licenses/ for more information. perl v5.14.2 2012-01-28 Dancer::Timer(3pm)
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