From: Elias Athanasopoulos <elathan@...>
Date: 2003-12-13T19:08:52+09:00
Subject: Re: getting a method from a block in C

Hello Guy!

On Fri, Dec 12, 2003 at 07:51:30PM +0900, ts wrote:
> >>>>> "e" == elathan  <elathan@phys.uoa.gr> writes:
> 
> >> don't forget to define a mark function, and call rb_gc_mark(proc) 
>  
> e> You mean a mark function for the Ruby garbage collector? 
>  
>  yes, the block must be marked otherwise the ruby GC will remove it.
> 
>  This mean that you must define a mark function for your C++ object and
>  call rb_gc_mark(proc) inside it.

I think I have done what you suggested. However I get:

foo.rb:42: [BUG] rb_gc_mark(): unknown data type 0x28(0x89963f8) non object
ruby 1.8.0 (2003-08-04) [i586-linux]

Which means that I haven't done it in the right way. 

I tried using gdb to identify the 'non-object' variable which can't be
marked, with no luck. Is there another way to accomplish this?

Also, the only way to associate a mark function with a new ruby class
is via Data_Wrap_Struct/Data_Make_Struct. Is this correct?

Regards,
-- 
University of Athens			I bet the human brain 
Physics Department				is a kludge --Marvin Minsky