In order to create a compact table for recording scores fast, I want to cast a bytestring with pack (so that the object is under Perls memory management) and send it to a Inline::C function where this bytestring is typecasted as a 2d array and filled with scores. How can this be done? I have been trying stuff like this: 

sub perl_routine
{
        $byte_string = pack "I*", (0) x ( $x_dimension x $y_dimension );

        c_function( $byte_string );
}

void c_function( char *byte_string )
{
        int **table = ( int ** ) byte_string;
        int i, j;

        for ( i = 0; i < foo, i++ )
        {
                for ( j = 0; j < bar, j++ )
                {
                        tableij++;
                }
        }
}
But I can't get it to work -> segfault. Assistance is most welcome! Thanks, Martin

Aaargh, the pre formatting does not work and brackets are eaten. the increment line is supposed to be tableij++

In reply to Passing a bytestring from Perl to Inline::C as a 2d array by maasha

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