Rust FFI Guide

Create safe foreign function interfaces between Rust and other languages like C, C++, and Python.

Usage

Describe the FFI scenario you need and get implementation guidance with safety considerations.

Examples

• "Call a C library from Rust using bindgen"
• "Expose Rust functions as a C shared library"
• "Create a Python extension module with PyO3"

Guidelines

• Always wrap unsafe FFI calls in safe Rust abstractions
• Show proper memory management across FFI boundaries
• Cover string handling between Rust and C
• Explain cbindgen for generating C headers from Rust
• Include error handling strategies across language boundaries