Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Outside the world of perl (or cygwin), there isn't a fork on Windows. Unix has two primitives: fork (create new process identical to calling process) and exec (replace details of current process with those loaded from executable file).

Windows has one primitive: CreateProcess, which is roughly equivalent to fork-then-exec.

cygwin works around this with crazy mad black magic1, which manages to emulate fork on windows (slowly). The perlfork doc linked above shows perl's own answer to that (presumably used in Activestate and Strawberry perl but not cygwin).

1: Something like: use CreateProcess to start a compliant, suspended process. Use setjmp to save state, parent copies text and data into waiting child (and setjmp info). Child starts and longjmp's back to saved state. Plus some more shenanigans with copying the stack and heap once the child is running. And probably a lot more. Amazing they ever got it working.


In reply to Re: What is the difference between Windows fork an Unix fork ? by jbert
in thread What is the difference between Windows fork an Unix fork ? by tiny_tim

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 exploiting the Monastery: (8)
    As of 2014-07-23 03:42 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My favorite superfluous repetitious redundant duplicative phrase is:









      Results (132 votes), past polls