Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Just to be clear, the memory used directly by the lexical is not freed but if, for example, the lexical contains the last reference to something, then that something will be destroyed and its memory freed when the lexical's scope is left (or when the last reference to the lexical is destroyed). So this is mostly a problem when dealing with long strings rather than objects.

No, I don't think that's correct. The memory will not be freed, if by freed you mean "available for use by other variables in my program". It will be re-used if you use that lexical again. See this post from Doug MacEachern for more info on this.

I'm not sure the closures thing I was talking about is really a bug; it's just a side-effect of nested subs and closures. If you do this, it will leak like crazy:

my $foo; sub bar { sub baz { $foo++; } }

It's creating a new private copy of $foo for baz() every time. Using Error.pm can sometimes lead people to do this without realizing it, when they use nested try/catch blocks.


In reply to Re: (tye)Re: Tracking Memory Leaks by perrin
in thread Tracking Memory Leaks by Hrunting

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



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

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

How do I use this? | Other CB clients
Other Users?
Others chanting in the Monastery: (3)
As of 2022-08-15 03:31 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found

    Notices?