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IRIX Base Documentation 1998 November
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IRIX 6.5.2 Base Documentation November 1998.img
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IO::Pipe.z
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IO::Pipe
Wrap
Text File
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1998-10-30
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3KB
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133 lines
IIIIOOOO::::::::PPPPiiiippppeeee((((3333)))) IIIIOOOO::::::::PPPPiiiippppeeee((((3333))))
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IO::pipe - supply object methods for pipes
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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>) {
....
}
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
IO::Pipe provides an interface to createing pipes between processes.
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new ( [READER, WRITER] )
Creates a 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.
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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
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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.
SSSSEEEEEEEE AAAALLLLSSSSOOOO
the _I_O::_H_a_n_d_l_e manpage
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Graham Barr <bodg@tiuk.ti.com>
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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.
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