From: "fredlinhares (Frederico Linhares) via ruby-core" <ruby-core@...>
Date: 2025-11-20T01:07:12+00:00
Subject: [ruby-core:123868] [Ruby Feature#21695] Optimizing Ruby performance with Ruby itself instead of Rust

Issue #21695 has been updated by fredlinhares (Frederico Linhares).


Currently, my goal is to rewrite the C++ code I have into C.  To achieve this, I am creating a set of macros in Ruby on top of C that run at compile time, and the output of these macros is C code.  Here is an example of what I am doing, code goes from this:

```
<%= scope do %>
  <%= var :my_texture, Game::Texture("img/some_texture.qoi") %>

  render(my_texture)
<% end %>
```

to this:

```
{
	Texture my_texture;
	Texture_constructor(&my_texture, "img/some_texture.qoi");

	render(my_texture);

	Texture_destructor(&my_texture);
}
```

When I create a Ruby variable, it tracks everything; this way, the tool (I have no name for it yet) can, for example, automatically add a destructor when needed.

Since you are interested, I will move my code to a gem and post the link here.

----------------------------------------
Feature #21695: Optimizing Ruby performance with Ruby itself instead of Rust
https://bugs.ruby-lang.org/issues/21695#change-115267

* Author: fredlinhares (Frederico Linhares)
* Status: Open
----------------------------------------
I am using ERB on top of C for a game I am making now.  We can use the tool to improve the productivity, memory safety, and runtime speed for Ruby.  It can also replace a Rust JIT compiler for better results.  The only problem is that it requires some level of manual memory management, while Rust does it all for you.  If I demonstrate that it is better than Rust in practice, would you be willing to incorporate it into the Ruby language?  I want to know because making it more generic will require more effort from me; if you are not interested, I won���t make the tool public.



-- 
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