IPC::Msg

IPC::Msg(3)            Perl Programmers Reference Guide            IPC::Msg(3)



NAME
       IPC::Msg - SysV Msg IPC object class

SYNOPSIS
           use IPC::SysV qw(IPC_PRIVATE S_IRWXU S_IRWXG S_IRWXO);
           use IPC::Msg;

           $msg = new IPC::Msg(IPC_PRIVATE, S_IRWXU ⎪ S_IRWXG ⎪ S_IRWXO);

           $msg->snd(pack("L a*",$msgtype,$msg));

           $msg->rcv($buf,256);

           $ds = $msg->stat;

           $msg->remove;


DESCRIPTION
METHODS
       new ( KEY , FLAGS )
           Creates a new message queue associated with KEY. A new queue is
           created if

       ·       KEY is equal to IPC_PRIVATE

       ·       KEY does not already  have  a  message queue associated with
               it, and FLAGS & IPC_CREAT is true.

               On creation of a new message queue FLAGS is used to set the
               permissions.

       id  Returns the system message queue identifier.

       rcv ( BUF, LEN [, TYPE [, FLAGS ]] )
           Read a message from the queue. Returns the type of the message
           read. See the msgrcv manpage

       remove
           Remove and destroy the message queue from the system.

       set ( STAT )

       set ( NAME => VALUE [, NAME => VALUE ...] )
           set will set the following values of the stat structure associated
           with the message queue.

               uid
               gid
               mode (oly the permission bits)
               qbytes

           set accepts either a stat object, as returned by the stat method,
           or a list of name-value pairs.

       snd ( TYPE, MSG [, FLAGS ] )
           Place a message on the queue with the data from MSG and with type
           TYPE.  See the msgsnd manpage.

       stat
           Returns an object of type IPC::Msg::stat which is a sub-class of
           Class::Struct. It provides the following fields. For a description
           of these fields see you system documentation.

               uid
               gid
               cuid
               cgid
               mode
               qnum
               qbytes
               lspid
               lrpid
               stime
               rtime
               ctime


SEE ALSO
       the IPC::SysV manpage the Class::Struct manpage

AUTHOR
       Graham Barr <gbarr@pobox.com>

COPYRIGHT
       Copyright (c) 1997 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.






















3rd Berkeley Distribution    perl 5.005, patch 02                  IPC::Msg(3)