Hello, I'm trying to write something with "flock" and need to take care of ALL the special cases, for example - when a filehandle got closed before the flock call: 
my $result = sysopen my $handle, "abc", O_WRONLY | O_CREAT;
close $handle;
eval {$result = flock $handle, LOCK_EX | LOCK_NB};
if ($@)
{
  print "------$@------";
}

[download]
How to make Perl NOT to throw out the message below? (it's without dashes, so it's not from my "print") 
flock() on closed filehandle $handle at ...line ...

[download]
(I want just to detect this case, I don't want any confusing messages)

Thanks,
Alex

In reply to A flock question by AlexFromNJ

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.