Why shouldn't I use it?

You should, I misread your answer actually (I thought you said the hash would prevent the deletion of the handles), I agree with you that this feature is useful.

But! returning a weakened reference from get_fds is a good idea. Thank you.

Adding it at the last moment, or storing it as a member as soon as the handle is opened (even if that means having two weak reference to the same handle in nearly the same place) is pretty much the same thing. There's a difference when you return $fd => { fd => $fd, %{$fd{$_}} } rather than id_2obj($_) => $fd{$_} though, in the first case, if the user keeps the hashref, it will always have the values it had when acquired, while in the latter, the "close" and "closetime" value will appear when the handle is closed. I like the first version better, because you have to call get_fds to get up-to-date information.

In reply to Re^5: Track open file handles by Eily
in thread Track open file handles by shmem

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.