#FFI

Articles about FFI — exploring patterns, best practices, and real-world implementations in production systems.

1 post tagged with ffi. ← All posts

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Pratik Dhanave · ·8 min read

Foreign Function Interface (FFI)

No language is an island. Decades of critical software — operating systems, libraries, codecs, crypto — is written in C, and any systems language that couldn't talk to it would be dead on arrival. Rust's foreign function interface lets it call C code (and be called from C), which is essential for interoperating with the existing world and for adopting Rust incrementally into C/C++ codebases. Crossing that boundary means leaving Rust's safety guarantees behind, so FFI is inherently unsafe — but it's a controlled, well-defined kind of unsafe.

No language is an island. Decades of critical software is written in C, and any systems language that couldn't talk to it would be dead on arrival. Rust's foreign function interface lets it call C (and be called from C) — essential for interoperating with the existing world and adopting Rust incrementally.

#Rust#FFI#Systems Programming#Programming Languages

All posts on this site are written by Pratik Dhanave, an Agentic AI Architect with 7+ years building production distributed systems, multi-agent AI platforms, and cloud-native infrastructure. About the author → Each article includes working code, architecture diagrams, and references to the specific frameworks and standards discussed. Browse all posts or explore related topics using the tag cloud above.