*** 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 **
defmodule MyLib do
use FFI.Library, name: "libstdc++.so.6"
attach_function :puts, [:string], :int
end
MyLib.puts("Hello World from C stdlib")
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
mix run examples/basic.exs
MIT