IPC::Msg(3p) Perl Programmers Reference Guide IPC::Msg(3p)NAMEIPC::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 mes-
sage 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 asso-
ciated 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" struc-
ture associated with the message queue.
uid
gid
mode (oly the permission bits)
qbytes
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IPC::Msg(3p) Perl Programmers Reference Guide IPC::Msg(3p)
"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.
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