elixir-ffi/README.md

FFI

*** Warning: Turns out this is a really bad idea, do not use! When the BEAM calls native functions it needs to know how many reductions should be used. Otherwise calling a long running function can break the scheduling completly, because with this approach a long running function is considered 1 reduction ***

An easy way to call external functions (e.g. C functions) from Elixir.

Inspired by Ruby's FFI

** This is alpha software **

Example Program

defmodule MyLib do
  use FFI.Library, name: "libstdc++.so.6"

  attach_function :puts, [:string], :int
end

MyLib.puts("Hello World from C stdlib")

Installation

The package can be installed by adding ffi to your list of dependencies in mix.exs:

def deps do
  [{:ffi, git: "https://github.com/joshnuss/elixir-ffi.git"}]
end

Running Examples

mix run examples/basic.exs

License

MIT