When you say global, do you mean a lexical with package or file-level scope or do you mean a true global accessible through the symbol table?

If the former, as I suspect, then Perl's reference counting GC may be tripping you up. In that case, every subroutine that refers to a lexical in an outer scope is a closure and increases the refcount of the lexical. At shutdown time, when Perl GCs the subroutines themselves, that reference count decreases.

It sounds to me like you need a separate finalize() method to call explicitly, rather than waiting for DESTROY(). That way, you can avoid the rather messy and unspecified order of destruction errors I think you're having.

Perl's global destruction is a race for the exit. Who knows what order things will happen?

In reply to Re: Global objects and GC by chromatic
in thread Global objects and GC by oyasuminasai

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.