IO::Pipe

version 1.123

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NAME
SYNOPSIS
DESCRIPTION
CONSTRUCTOR
METHODS
SEE ALSO
AUTHOR
COPYRIGHT

#NAME

IO::Pipe - supply object methods for pipes

#SYNOPSIS

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>) {
 ...
}

#DESCRIPTION

IO::Pipe provides an interface to creating pipes between processes.

#CONSTRUCTOR

#new ( [READER, WRITER] )

Creates an IO::Pipe, which is a reference to a newly created symbol (see the Symbol package). IO::Pipe::new optionally takes two arguments, which should be objects blessed into IO::Handle, or a subclass thereof. These two objects will be used for the system call to pipe. If no arguments are given then method handles is called on the new IO::Pipe object.

These two handles are held in the array part of the GLOB until either reader or writer is called.

#METHODS

#reader ([ARGS]): The object is re-blessed into a sub-class of IO::Handle, and becomes a handle at the reading end of the pipe. If ARGS are given then fork is called and ARGS are passed to exec.
#writer ([ARGS]): The object is re-blessed into a sub-class of IO::Handle, and becomes a handle at the writing end of the pipe. If ARGS are given then fork is called and ARGS are passed to exec.
#handles (): This method is called during construction by IO::Pipe::new on the newly created IO::Pipe object. It returns an array of two objects blessed into IO::Pipe::End, or a subclass thereof.

#SEE ALSO

IO::Handle

#AUTHOR

Graham Barr. Currently maintained by the Perl Porters. Please report all bugs to <perl5-porters@perl.org>.

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