FFI Geiger

Static analysis tool that counts FFI (C function) calls across the Rust codebase. It reports which C functions are called, how often, and from which crates.

Usage

cd src/redisearch_rs && cargo ffi-geiger

The project must be built first so that the bindings.rs file generated by bindgen exists in the target directory.

What it excludes

• c_entrypoint/ crates
• tools/ crates
• Bencher crates (*_bencher)
• Test utility crates (*_test_utils)
• tests/ directories and #[cfg(test)] / #[test] code

Output

A markdown-formatted report with:

• A per-crate table of FFI symbols and their call counts, sorted by total calls descending.
• A summary line with total calls and unique symbols across all crates.