


lib::IPC::Msg(3p)Perl Programmers Reference Guidlib::IPC::Msg(3p)


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

       o       KEY is equal to IPC_PRIVATE

       o       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.



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lib::IPC::Msg(3p)Perl Programmers Reference Guidlib::IPC::Msg(3p)


       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.























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