https://github.com/joshnuss/elixir-ffi

Foreign Function Interface (FFI) for Elixir
https://github.com/joshnuss/elixir-ffi

elixir ffi

Last synced: 4 days ago
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Foreign Function Interface (FFI) for Elixir

• Host: GitHub
• URL: https://github.com/joshnuss/elixir-ffi
• Owner: joshnuss
• Created: 2015-09-21T22:52:17.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2018-09-17T04:20:47.000Z (about 6 years ago)
• Last Synced: 2024-11-01T18:51:40.244Z (11 days ago)
• Topics: elixir, ffi
• Language: Elixir
• Size: 18.6 KB
• Stars: 56
• Watchers: 5
• Forks: 2
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
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](https://github.com/elixir-lang/elixir).

Inspired by [Ruby's FFI](https://github.com/ffi/ffi)

** This is alpha software **

## Example Program

```elixir

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`:

```elixir

def deps do

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

end

```

## Running Examples

```shell

mix run examples/basic.exs

```

## License

MIT