Dearest Monks, 
This is perl, v5.8.0 built for i386-linux-thread-multi
$ uname -r => 2.4.21-37.EL
Module id = IPC::Msg CPAN_VERSION 1.00

[download]
First, using IPC::Msg, I'd like to detect when a queue grows full. Typically this happens when there are no readers for a queue being written to. 
#!/usr/bin/perl

use strict;
use warnings;

use IPC::SysV qw(IPC_CREAT IPC_NOWAIT S_IRWXU
                 S_IRWXG S_IRWXO IPC_SET);
use IPC::Msg;

my $msg = new IPC::Msg ("QUEUE_42",
                        IPC_CREAT | S_IRWXU | S_IRWXG | S_IRWXO | IPC_
+SET);

SEND:
while (1) {
  # exit SEND if $msg->full(); # PSEUDO-CODE ONLY
  $msg->snd(1, pack("L a*", 1, "Hello World!"));
}

[download]
Second, I would like to list the avaiable queues by name. ipcs(8) reports msqid only: 
$ ipcs -q
------ Message Queues --------
key        msqid      owner      perms      used-bytes   messages
0x00000000 163844     u92        777        16384        1024

[download]
How do i get "QUEUE_42" from msgid 163844?
--
Best regards
Andreas

In reply to IPC::Msg - determine if queue is full by andreas1234567

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.