[code-reflection] RFR: ONNX FFM Runtime initial work [v3]

[Maurizio Cimadamore]

On Mon, 10 Feb 2025 14:32:07 GMT, Adam Sotona <asotona at openjdk.org> wrote:

> However I don't prefer to start a prototype of relatively simple functionality by dependency on ~90k lines of generated and unreadable sources + external library and tools. I think we need something lightweight to start playing with.

You are of course free to do as you please. I suppose the definition of "lightweight" is what I'm objecting to. Sure, your code is more compact, but in terms of getting started quickly, I think the jextract version is superior. I literally got the example I linked [here](https://github.com/openjdk/babylon/pull/311#issuecomment-2648192400) up and running in 5 minutes. In my view the generated code is... generated code. We will add more filtering option to address this specific use case (jextract design center is not -- yet -- around APIs that are tables of function pointers). But if you are in prototype mode, whether it's 100 LoC, 1K or 100K, does it matter? I'd still rely on a battle-tested tool to generate all the required offsets/API points from me.

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PR Comment: https://git.openjdk.org/babylon/pull/311#issuecomment-2648248483