Hi,

This is the C code that called from a Perl function: (allocation, construction, etc. was used when I didn't attempt to use the Perl parser of the calling function)

    dTHX; // Returns NULL for my_perl :(

    // Call a PERL function
    dSP;                                                        /* Ini
+tialize stack pointer         */
    ENTER;                                                      /* Eve
+rything created after here    */
    SAVETMPS;                                                   /* ...
+is a temporary variable.      */
    PUSHMARK(SP);                                               /* Rem
+ember the stack pointer       */
    XPUSHs(sv_2mortal(newSViv((unsigned int)cbCtx)));           /* Pus
+h callback context onto stack */
    
    my_hash = newHV();
    my_arr  = newAV();

    hv_store( my_hash, "aaaaaa", 6, newSViv(42), 0 );

    for ( int i = 0; i < 50; i++ )
    {
        av_push( my_arr, newSViv((unsigned int)i) );
    }

    // Store reference to parameters on the HASH
    hv_store( my_hash, "bbbbbb", 6, newRV((SV*)my_arr), 0 );

    XPUSHs( sv_2mortal(newRV((SV*)my_hash)) );

    //PUTBACK;                                                  /* Mak
+e local stack pointer global  */
    call_pv( funcName, G_SCALAR );                              /* Cal
+l the function                */
    retVal = POPi;                                              /* POP
+ the return of the PERL function */
    SPAGAIN;                                                    /* Ref
+resh stack pointer            */
    PUTBACK;
    FREETMPS;                                                   /* fre
+e that return value           */
    LEAVE;                                                      /* ...
+and the XPUSHed "mortal" args */

[download]

In reply to Re^8: Perl calls C calls Perl CallBack: How Perl callback use the same interpreter/context as Perl caller? by itamarat
in thread Perl calls C calls Perl CallBack: How Perl callback use the same interpreter/context as Perl caller? by itamarat

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.