IPC::Msg

See the current Perl documentation for IPC::Msg.

Here is our local, out-dated (pre-5.6) version:

IPC::Msg - SysV Msg IPC object class

    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);

    

    


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 <EM>FLAGS</EM> & 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

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

SysV  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.