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Pipe (3)
  • >> Pipe (3) ( Solaris man: Библиотечные вызовы )
  • 
    
    

    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 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.
    
    
    

    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

         the IO::Handle manpage
    
    
    

    AUTHOR

         Graham Barr <[email protected]>
    
    
    

    COPYRIGHT

         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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