IPC::Msg

(source, CPAN)

version 1.02

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NAME
SYNOPSIS
DESCRIPTION
METHODS
SEE ALSO
AUTHOR
COPYRIGHT

#NAME

IPC::Msg - SysV Msg IPC object class

#SYNOPSIS

use IPC::SysV qw(IPC_PRIVATE S_IRUSR S_IWUSR);
use IPC::Msg;

$msg = new IPC::Msg(IPC_PRIVATE, S_IRUSR | S_IWUSR);

$msg->snd(pack("l! a*",$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 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. Be careful not to set any flags that the Sys V IPC implementation does not allow: in some systems setting execute bits makes the operations fail.

#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 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

IPC::SysV Class::Struct

#AUTHOR

Graham Barr <gbarr@pobox.com>

CONTENTS

#NAME

#SYNOPSIS

#DESCRIPTION

#METHODS

#SEE ALSO

#AUTHOR

#COPYRIGHT