IPC::Msg

Section: Perl Programmers Reference Guide (3)
Updated: perl 5.005, patch 02
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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.


 

Index

NAME
SYNOPSIS
DESCRIPTION
METHODS
SEE ALSO
AUTHOR
COPYRIGHT

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Time: 15:39:59 GMT, July 31, 2024