man IPC::Msg () - SysV Msg IPC object class

NAME

IPC::Msg - SysV Msg IPC object class

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 CWKEY. A new queue is created if
*
CWKEY is equal to CWIPC_PRIVATE
*
CWKEY does not already have a message queue associated with it, and CWCIFLAGSCW & IPC_CREAT is true. On creation of a new message queue CWFLAGS 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 ...] )
CWset will set the following values of the CWstat structure associated with the message queue. 
    uid
    gid
    mode (oly the permission bits)
    qbytes
CWset accepts either a stat object, as returned by the CWstat method, or a list of name-value pairs.
snd ( TYPE, MSG [, FLAGS ] )
Place a message on the queue with the data from CWMSG and with type CWTYPE. See msgsnd.
stat
Returns an object of type CWIPC::Msg::stat which is a sub-class of CWClass::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.