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.
CCOONNSSTTRRUUCCTTOORR new ( [READER, WRITER] )Creates an "IO::Pipe", which is a reference to a newly created sym-
bol (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 sys-
tem 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. MMEETTHHOODDSS 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 reportall bugs to
COPYRIGHT. Copyright (c) 1996-8 Graham Barr
reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.. All rights perl v5.8.8 2001-09-21 IO::Pipe(3pm)