Dear fellow monks,
I am trying to use one of my own c files to extend (and ultimately speed up) one of my perl script.
I read the perlxstut and friends
I would like to pass a reference to an array of integers to a C function I have. The protype of the function looks like that:
double foo_in_c(int *, int);
I did something in XS that works but that in my opinion is not very elegant, and also not very efficient (I have to copy the array). 
double
foo(aref)
    SV * aref
  INIT:
    int i, last_index;
    int *array;
    if ((!SvROK(aref)) || (SvTYPE(SvRV(aref)) != SVt_PVAV) || ((last_i
+ndex = av_len((AV *)SvRV(aref))) < 0))
    {
      XSRETURN_UNDEF;
    }
    array = (int*)calloc(last_index+1, sizeof(int)
  CODE:
    for(i=0;i<=last_index;i++)
      array[i] = SvIV(*av_fetch((AV *)SvRV(array), i, 0));
    RETVAL = foo_in_c(array, last_index+1);
  OUTPUT:
    RETVAL

[download]
My question is simple: does anyone know of a better way to do that? Especially, how is it possible to avoid the copying part?
Thanks in advance,
--
jey

In reply to Extending Perl with C: how to use an array reference? by jey

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