[brabel]

Exactly. That's what Extism is trying to solve. That WASI post doesn't show at all how to use the WASM code from C, or vice versa, because it just compiles the entire C program to WASM which uses the POSIX-based WASI API. If you want an alternative to Extism, you need something like wasmer.io, not just wasmtime (Extism actually uses wasmtime as mentioned in the post).

[ramesh31]

Right. The point being that you can take your pick of WASI compliant runtimes which have those features. Extism isn't something special compared to any other open source project in this domain, yet it smells of a commercial venture. Count me out.

[xmonkee]

>Extism isn't something special compared to any other open source project in this domain

Well, ok, can you give me an example of some other project doing this sort of interop without manual memory mapping?