From: Newb Newb <revathy.p@...>
Date: 2009-04-20T19:06:40+09:00
Subject: Help on Ruby Segmentation Problem

hi all..
I extend ruby with C.
I m new to these kind of stuffs...
I integrate my dll namely prov.all into C program namely prov.c
afterthat i call those c functions through ruby .


irb(main):001:0> require 'prov1'
=> true
irb(main):002:0> include Prov
=> Object
irb(main):003:0> Prov::load
=> true
irb(main):004:0> Prov::init_engine
(irb):4: [BUG] Segmentation fault
ruby 1.8.6 (2007-03-13) [i386-mswin32]


when i call Prov::init_engine method it gets crashed.

could you pls point me out which causes segmentation Problem.

Thanks in advance.



below is my prov1.c code


#include "windows.h"

#include "ruby.h"

#include "prov.h"




#define _D(string) {OutputDebugString(string);}


VALUE Prov;





void _textline(const char *s, int len)
//************************************
{
  _D(s);
}

static VALUE p_load(VALUE self )
//******************************
{


       prov_load();




  return Qtrue;
}

static VALUE p_init(VALUE self)
//*****************************
{
  _D("-> init");

        prov_set_textline_callback(_textline);

        prov_renderInit();
  //return Qtrue;
}

static VALUE p_parse(VALUE self, VALUE string_to_parse)
//*****************************************************
{

  _D(StringValuePtr(string_to_parse));
  return prov_parse(StringValuePtr(string_to_parse));

}



static VALUE pr_render( VALUE self )
//**********************************
{


    _D("-> render");


  prov_render(0);
  //return Qtrue;
}


void Init_prov1()
//***************
{
    Prov = rb_define_module( "Prov" );
    rb_define_method(Prov, "load", p_load, 0);
    rb_define_method( Prov, "init_engine", p_init, 0 );
    rb_define_method(Prov, "parse", p_parse, 1);
    rb_define_method(Prov, "render", pr_render, 0);

}
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