Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical

Comment on

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

  1. No.

    You can replace:

    if( exists $copyRef->{ $step } ) { $copyRef = $copyRef->{ $step }; } else { lock %{ $copyRef }; $copyRef = $copyRef->{ $step } = &share( {} ); }


    lock %{ $copyRef }; $copyRef = $copyRef->{ $step } //= &share( {} )

    Which is more compact, but not easier nor more efficient.

  2. Yes.

    Two possibilities:

    1. You can build a normal (non-shared) subhash and when complete, use threads::shared::shared_clone() to make a shared copy of it and assign a reference to the copy to a key/value pair in the main shared hash:
      ... my %subhash; ... # populate it lock %mainSharedHash; $mainSharedHash{ $key } = shared_clone( \%subhash ); ...
    2. You can create a shared subhash and assign a ref to it without needing to copy:
      ... my %subhash :shared: ... # populate it lock %mainSharedHash; $mainSharedHash{ $key } = \%subhash;
  3. I do not understand the question.

    You'll get better answers if you describe your actual application. Ie. Real requirements garner working responses.

  4. Again, your question makes no sense.

    In a subroutine (or anywhere else), you can use unshared variables and/or shared variables as required.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^5: Is it possible to create a single Hash-of-Hash.. with multiple threads.. by BrowserUk
in thread Is it possible to create a single Hash-of-Hash.. with multiple threads.. by gsat

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, 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
  • 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.
  • Log In?

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

    How do I use this? | Other CB clients
    Other Users?
    Others taking refuge in the Monastery: (7)
    As of 2015-11-25 08:27 GMT
    Find Nodes?
      Voting Booth?

      What would be the most significant thing to happen if a rope (or wire) tied the Earth and the Moon together?

      Results (672 votes), past polls