'\" te
.\" Automatically generated by Pod::Man 2.23 (Pod::Simple 3.14)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is turned on, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.ie \nF \{\
.    de IX
.    tm Index:\\$1\t\\n%\t"\\$2"
..
.    nr % 0
.    rr F
.\}
.el \{\
.    de IX
..
.\}
.\"
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
.\" Fear.  Run.  Save yourself.  No user-serviceable parts.
.    \" fudge factors for nroff and troff
.if n \{\
.    ds #H 0
.    ds #V .8m
.    ds #F .3m
.    ds #[ \f1
.    ds #] \fP
.\}
.if t \{\
.    ds #H ((1u-(\\\\n(.fu%2u))*.13m)
.    ds #V .6m
.    ds #F 0
.    ds #[ \&
.    ds #] \&
.\}
.    \" simple accents for nroff and troff
.if n \{\
.    ds ' \&
.    ds ` \&
.    ds ^ \&
.    ds , \&
.    ds ~ ~
.    ds /
.\}
.if t \{\
.    ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
.    ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
.    ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
.    ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
.    ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
.    ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
.\}
.    \" troff and (daisy-wheel) nroff accents
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
.ds ae a\h'-(\w'a'u*4/10)'e
.ds Ae A\h'-(\w'A'u*4/10)'E
.    \" corrections for vroff
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
.    \" for low resolution devices (crt and lpr)
.if \n(.H>23 .if \n(.V>19 \
\{\
.    ds : e
.    ds 8 ss
.    ds o a
.    ds d- d\h'-1'\(ga
.    ds D- D\h'-1'\(hy
.    ds th \o'bp'
.    ds Th \o'LP'
.    ds ae ae
.    ds Ae AE
.\}
.rm #[ #] #H #V #F C
.\" ========================================================================
.\"
.IX Title "IO::Pipe 3"
.TH IO::Pipe 3 "2012-11-03" "perl v5.12.5" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
IO::Pipe \- supply object methods for pipes
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&        use IO::Pipe;
\&
\&        $pipe = new IO::Pipe;
\&
\&        if($pid = fork()) { # Parent
\&            $pipe\->reader();
\&
\&            while(<$pipe>) {
\&                ...
\&            }
\&
\&        }
\&        elsif(defined $pid) { # Child
\&            $pipe\->writer();
\&
\&            print $pipe ...
\&        }
\&
\&        or
\&
\&        $pipe = new IO::Pipe;
\&
\&        $pipe\->reader(qw(ls \-l));
\&
\&        while(<$pipe>) {
\&            ...
\&        }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\f(CW\*(C`IO::Pipe\*(C'\fR provides an interface to creating pipes between
processes.
.SH "CONSTRUCTOR"
.IX Header "CONSTRUCTOR"
.IP "new ( [\s-1READER\s0, \s-1WRITER\s0] )" 4
.IX Item "new ( [READER, WRITER] )"
Creates an \f(CW\*(C`IO::Pipe\*(C'\fR, which is a reference to a newly created symbol
(see the \f(CW\*(C`Symbol\*(C'\fR package). \f(CW\*(C`IO::Pipe::new\*(C'\fR optionally takes two
arguments, which should be objects blessed into \f(CW\*(C`IO::Handle\*(C'\fR, or a
subclass thereof. These two objects will be used for the system call
to \f(CW\*(C`pipe\*(C'\fR. If no arguments are given then method \f(CW\*(C`handles\*(C'\fR is called
on the new \f(CW\*(C`IO::Pipe\*(C'\fR object.
.Sp
These two handles are held in the array part of the \s-1GLOB\s0 until either
\&\f(CW\*(C`reader\*(C'\fR or \f(CW\*(C`writer\*(C'\fR is called.
.SH "METHODS"
.IX Header "METHODS"
.IP "reader ([\s-1ARGS\s0])" 4
.IX Item "reader ([ARGS])"
The object is re-blessed into a sub-class of \f(CW\*(C`IO::Handle\*(C'\fR, and becomes a
handle at the reading end of the pipe. If \f(CW\*(C`ARGS\*(C'\fR are given then \f(CW\*(C`fork\*(C'\fR
is called and \f(CW\*(C`ARGS\*(C'\fR are passed to exec.
.IP "writer ([\s-1ARGS\s0])" 4
.IX Item "writer ([ARGS])"
The object is re-blessed into a sub-class of \f(CW\*(C`IO::Handle\*(C'\fR, and becomes a
handle at the writing end of the pipe. If \f(CW\*(C`ARGS\*(C'\fR are given then \f(CW\*(C`fork\*(C'\fR
is called and \f(CW\*(C`ARGS\*(C'\fR are passed to exec.
.IP "handles ()" 4
.IX Item "handles ()"
This method is called during construction by \f(CW\*(C`IO::Pipe::new\*(C'\fR
on the newly created \f(CW\*(C`IO::Pipe\*(C'\fR object. It returns an array of two objects
blessed into \f(CW\*(C`IO::Pipe::End\*(C'\fR, or a subclass thereof.

.\" Oracle has added the ARC stability level to this manual page
.SH ATTRIBUTES
See
.BR attributes (5)
for descriptions of the following attributes:
.sp
.TS
box;
cbp-1 | cbp-1
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE 
=
Availability	runtime/perl-512
=
Stability	Uncommitted
.TE 
.PP
.SH "SEE ALSO"
.IX Header "SEE ALSO"
IO::Handle
.SH "AUTHOR"
.IX Header "AUTHOR"
Graham Barr. Currently maintained by the Perl Porters.  Please report all
bugs to <perl5\-porters@perl.org>.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (c) 1996\-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.


.SH NOTES

.\" Oracle has added source availability information to this manual page
This software was built from source available at https://java.net/projects/solaris-userland.  The original community source was downloaded from  http://www.cpan.org/src/5.0/perl-5.12.5.tar.bz2

Further information about this software can be found on the open source community website at http://www.perl.org/.