IO::pipe - supply object methods for pipes
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>) { .... }
IO::Pipe
provides an interface to createing pipes between processes.
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.
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.
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.
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.
Graham Barr <bodg@tiuk.ti.com>
Copyright (c) 1996 Graham Barr. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
If rather than formatting bugs, you encounter substantive content errors in these documents, such as mistakes in the explanations or code, please use the perlbug utility included with the Perl distribution.