NAME

POSIX::1003::Sysconf - POSIX access to sysconf()

INHERITANCE

POSIX::1003::Sysconf
  is a POSIX::1003

SYNOPSIS

use POSIX::1003::Sysconf; # load all names

use POSIX::1003::Sysconf qw(sysconf);
# keys are strings!
$ticks = sysconf('_SC_CLK_TCK');

use POSIX::1003::Sysconf qw(sysconf _SC_CLK_TCK);
$ticks  = _SC_CLK_TCK;   # constants are subs

use POSIX::1003::Sysconf '%sysconf';
my $key = $sysconf{_SC_CLK_TCK};
$sysconf{_SC_NEW_KEY} = $key_code;
$ticks  = sysconf($key);

print "$_\n" for keys %sysconf;

FUNCTIONS

Standard POSIX

sysconf(NAME)

Returns the sysconf value related to the NAMEd constant. The NAME must be a string. undef will be returned when the NAME is not known by the system.

example:

my $ticks = confstr('_SC_CLK_TCK') || 1000;

Additional

sysconf_names()

Returns a list with all known names, unsorted.

CONSTANTS

The exported variable %sysconf is a HASH which maps _SC_* names on unique numbers, to be used with the system's sysconf() function.

SEE ALSO

This module is part of POSIX-1003 distribution version 0.02, built on December 19, 2011. Website: http://perl.overmeer.net. The code is based on POSIX, which is released with Perl itself.

COPYRIGHTS

Copyrights of the perl code and the related documentation by 2011 by Mark Overmeer. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://www.perl.com/perl/misc/Artistic.html