IPC::Msg - SysV Msg IPC object class
use IPC::SysV qw(IPC_PRIVATE S_IRUSR S_IWUSR); use IPC::Msg; $msg = IPC::Msg->new(IPC_PRIVATE, S_IRUSR | S_IWUSR); $msg->snd(pack("l! a*",$msgtype,$msg)); $msg->rcv($buf,256); $ds = $msg->stat; $msg->remove;
A class providing an object based interface to SysV IPC message queues.
Creates a new message queue associated with
KEY. A new queue is created if
KEY is equal to
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.
Returns the system message queue identifier.
Read a message from the queue. Returns the type of the message read. See msgrcv. The BUF becomes tainted.
Remove and destroy the message queue from the system.
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.
Place a message on the queue with the data from
MSG and with type
TYPE. See msgsnd.
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
Graham Barr <email@example.com>, Marcus Holland-Moritz <firstname.lastname@example.org>
Version 2.x, Copyright (C) 2007, Marcus Holland-Moritz.
Version 1.x, Copyright (c) 1997, Graham Barr.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.