Rust in C with FFI

This repo is an example of calling Rust from C code.

In this example we have two functions,

add(a,b) - that adds two numbers

solve_interleave(s1, s2, s3) - that solves Leetcode's 97. Interleaving String problem

The domain logic is clearly separated from FFI code for better reuse.

Also we are careful when using Strings from C code, we do not allocate new memory for Rust code, but we reuse the same memory that was allocated in C code, and we solve the problem by using lifetimes.

Steps

# navigage to rust_solver
$ cargo build

# create link to the build from the root of the project
$ sudo ln -s $(pwd)/rust_solver/target/debug/librust_solver.so librust_solver.so

# compile C code
$ gcc main.c -o main -L. -lrust_solver

# Run the code
$ ./main

leviathanbeak/call_rust_in_c_example

Rust in C with FFI

Steps