mr_p has asked for the wisdom of the Perl Monks concerning the following question:

Hi again everyone,

I am using threads in my program, and I wanted to know if it is a must for me to compile perl with -Dusethreads option?

What does -Dusethreads option do? Also, Major part of my code deals with using Net::FTP in threads, does anyone know if I should use semaphores with it?

Thanks for you help.

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Re: perl -Dusethreads compilation
by moritz (Cardinal) on Apr 05, 2010 at 14:27 UTC
    -Dusethreads enables threading in Perl. It is described in the INSTALL file in the perl source tree, which also describes the rest of the compilation process.
    Perl 6 - links to (nearly) everything that is Perl 6.
[reply]
[d/l]
      What does it mean when it says...
      The default is to compile without thread support.
      Does it mean that it installs a thread module or there are some internal code base protection that are copiled and used to prevent race conditions in threads?
[reply]
        without thread support

        means just what it says. There will be no module threads, and there will be no support for more than one thread at a time.

[reply]
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Re: perl -Dusethreads compilation
by BrowserUk (Patriarch) on Apr 05, 2010 at 14:33 UTC
    Also, Major part of my code deals with using Net::FTP in threads, does anyone know if I should use semaphores with it?

    What would you use the semaphores for? (Ie. Why do you think you might need to use semaphores?)

    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.
[reply]
      Blocking certain critical blocks of code.
[reply]

        Which critical blocks of code?

        (This would go a lot quicker of you gave us some clue as to what you are trying to do! Ie. Post your code, or at the very least, some pseudo-code of what you're intending to do. As is, your question is impossible to answer.)

        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.
[reply]

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