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

NAME
       IPC::Msg - SysV Msg IPC object class

SYNOPSIS
           use IPC::SysV qw(IPCPRIVATE SIRUSR SIWUSR);
           use IPC::Msg;

           $msg = IPC::Msg->new(IPCPRIVATE, SIRUSR | SIWUSR);

           $msg->snd($msgtype, $msgdata);

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

           $ds = $msg->stat;

           $msg->remove;

DESCRIPTION
       A class providing an object based interface to SysV IPC message queues.

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

           ·   "KEY" is equal to "IPCPRIVATE"

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

           On creation of a new message queue "FLAGS" is used to set the
           permissions.  Be careful not to set any flags that the Sys V IPC
           implementation does not allow: in some systems setting execute bits
           makes the operations fail.

       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 msgrcv.  The BUF becomes tainted.

       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 msgsnd.

       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
       IPC::SysV, Class::Struct

AUTHORS
       Graham Barr , Marcus Holland-Moritz 

COPYRIGHT
       Version 2.x, Copyright (C) 2007-2010, Marcus Holland-Moritz.

       Version 1.x, Copyright (c) 1997, Graham Barr.

       This program is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself.



perl v5.16.3                      2013-03-04                     IPC::Msg(3pm)