Rails - Mar 2012 - RubyInline passing VALUE with pthread

I am trying to apply C multithreading to a ruby class method
Here is the code:

require ''inline''

class Example

  inline :C do |builder|
  builder.include "<pthread.h>"

    builder.c ''
    static void run_thread(VALUE name){
        // I added a ruby User class to test posting a variable from
thread to db
        VALUE user = rb_const_get( rb_cObject, rb_intern("User") );
        rb_funcall(user, rb_intern("add"), 1, name);
    }''


    builder.c ''
    static void simple(VALUE name){
        run_thread(self, name);
    }''


    builder.c ''
    static void threads(VALUE name){
        pthread_t pth;

        pthread_create(&pth, NULL, (void *)run_thread, (VALUE *)name );

        pthread_join(pth, NULL);
    }''
end

end



if I run Example.new.run_thread("Adam") i get the expected result
---------
(0.3ms)  BEGIN
SQL (19.9ms)  INSERT INTO `users` (`created_at`, `name`, `updated_at`)
VALUES (''2012-03-16 04:53:15'', ''Adam'',
''2012-03-16 04:53:15'')
(0.5ms)  COMMIT

if I run Example.new.simple("Adam") I get the expected result
---------
(0.3ms)  BEGIN
SQL (19.9ms)  INSERT INTO `users` (`created_at`, `name`, `updated_at`)
VALUES (''2012-03-16 04:53:15'', ''Adam'',
''2012-03-16 04:53:15'')
(0.5ms)  COMMIT

if I run Example.new.threads("Adam") i get the error
---------
[FATAL] failed to allocate memory


I think the problem is that I am not passing the VALUE properly to
thread.
I would need guidance with this please. Thank you.

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