From: Sean Chittenden <sean@...>
Date: 2002-06-11T03:55:18+09:00
Subject: Re: multiple instances of Ruby interpreter in my C++ code?

> > I'm new to Ruby and am currently trying to embed Ruby in a C++
> > program. It is pretty straightforward and I've already had some
> > success with that.  However, what I really want is to have several
> > independent instances of the interpreter running. Lua for example
> > makes this easy by encapsulating the interpreter state in a C
> > struct, but I didn't see that facility in Ruby. Is there any way
> > to accomplish this?
>
> Ruby makes use of a lot of global values - there is no way of doing
> this in Ruby currently.
> 
> What reason do you have for wanting multiple instances?  There may
> be another way of accomplishing your goal(s).

Same problem, different application domain: Apache 2.0.  Inorder for
mod_ruby to support the Threaded MPM, there must be support for
multiple interpreters in the same process.  Right now mod_ruby only
supports the prefork MPM.

Are there any plans for locking down the use of globals?  Would it be
possible to create a struct of Globals and push the struct onto a
linked list of interpreter states?

-sc

-- 
Sean Chittenden