This makes perfectly sense, at least if you're in Linux - try using ps afx to see the process list. In Linux, every thread shows up as a different process, even if the creation process uses the clone system call that makes the right thing. This allows the creation of user space thread libraries, even if it has drawbacks which make the implementation depart significantly from POSIX in some areas.

When you use threads in Linux, a special control thread is created to manage all the other subthreads; moreover, you have to take into account the main thread, i.e. the one that starts it all:

    my-test-program.pl         # Main thread
    \_ my-test-program.pl      # Control thread
       \_ my-test-program.pl   # 1st subthread
       \_ my-test-program.pl   # 2nd subthread
       \_ my-test-program.pl   # 3rd subthread

[download]
so they sum up to 5.

As a side note, please take a look to the Writeup Formatting Tips.

Flavio
perl -ple'$_=reverse' <<<ti.xittelop@oivalf

Don't fool yourself.

In reply to Re: (supposingly) threads now being fork()'ed... by polettix
in thread (supposingly) threads now being fork()'ed... by lwknet

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.