IPC::Msg(3) Perl Programmers Reference Guide IPC::Msg(3)NAMEIPC::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;
DESCRIPTIONMETHODS
new ( KEY , FLAGS )
Creates a new message queue associated with KEY. A new
queue is created if
o KEY is equal to IPC_PRIVATE
o 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.
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IPC::Msg(3) Perl Programmers Reference Guide IPC::Msg(3)
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.
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