Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

Perl uses reference counting as its garbage collection technique. When the last reference to a given object falls out of scope, or is explicitly eradicated (as in your call to delete), the object's reference count drops to zero, and Perl is permitted to clean it up. Memory leaks typically occur when reference counts are prevented from dropping to zero, and that usually happens with self-referential or co-referential objects. If $a = \$a, then when $a falls out of scope the reference count cannot drop to zero. This is what Scalar::Util's weaken() is there to address, or object destructors that are written to break known circular cycles.

A more thorough, and community-refined explanation is available in perlref, under the section Circular References.


Dave


In reply to Re: Possible Memory Leak? by davido
in thread Possible Memory Leak? by Clovis_Sangrail

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!
  • 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, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others taking refuge in the Monastery: (16)
    As of 2014-07-14 14:23 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      When choosing user names for websites, I prefer to use:








      Results (261 votes), past polls