Manual Reference Pages  - IPC::Msg (3pm)

NAME

IPC::Msg - SysV Msg IPC object class

CONTENTS

SYNOPSIS



    use IPC::SysV qw(IPC_PRIVATE S_IRWXU);
    use IPC::Msg;





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





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





    $msg->rcv($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 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 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

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.


perl v5.8.8 IPC::Msg (3pm) 2001-09-21
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