From: Beoran Aegul <redmine@...>
Date: 2010-08-22T17:36:03+09:00
Subject: [ruby-core:31821] [Feature #3731] Easier Embedding API for Ruby

Issue #3731 has been updated by Beoran Aegul.


Dear Asher,

Well, I certainly agree documentation should be improved for this use case! :)

However, the problem with what you suggest is that it doesn't work more than once. 

For example; I get a segmentation violation (crash) with a "You may encounter a bug of Ruby interpreter."
on the second call to ruby_run_node();
if I try this on a ruby1.9.1 p0:
 

#include <ruby.h>

RUBY_GLOBAL_SETUP
int main( int argc __attribute__((unused)), char *argv[] __attribute__((unused)) )	{
        RUBY_INIT_STACK 
	ruby_init();	
        {
	char*	options[]	=	{ "", "-e", "puts 'hello'"  };
	void*	node		=	ruby_options( 2, options );
	char*	options2[]	=	{ "", "-e", "puts 'world'"  };
	void*	node2		=	ruby_options( 2, options2 );	
        ruby_run_node( node  );
        ruby_run_node( node2 );
        }
}	

It may be that this bug is fixed in later versions, but I still have to install them to try.

Another problem is that it's a rather unwieldy API. It's nicer if you can run multiple scripts, or call rb_eval_string multiple times. 
It's also nice if you can catch syntax errors in the ruby files loaded and handle them on the C side.

Kind Regards,

B.

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