NIFs and C-Nodes

! Lukas Rieder

Erlang and Elixir

Erlang and Elixir ❤

Erlang and Elixir are fast

fast enough for 99%

Erlang and Elixir are stable

stable for 99.99%

Chances are you will never need a NIF

Excursion: HTML Parsers

<html lang="en"> {"html", [{"lang", "en"}], [_]} Excursion: HTML Parsers

What is the correct tree?

<html> <head> <body> <svg> <desc> <style> <a> Answer B: <svg><desc><style><a>

<html> <head> <body> <svg:svg> <svg:desc> <style> <-text>: <a> Answer C:

<html> <head> <body> <svg:svg> <svg:desc> <svg:style> <svg:a> Answer D: <svg><desc><style><a>

<html> <head> <body> <svg:svg> <svg:desc> <svg:style> <-text>: <a> Answer C:

ﬂoki html5ever mochiweb HTML parsers in Erlang *2017 edition

fast, correct

fast, correct ﬂoki html5ever mochiweb

ﬂoki html5ever mochiweb myhtml fast, correct

ﬂoki html5ever mochiweb myhtml Usable in Erlang

Implementing Bindings in Erlang

Port drivers

C-Nodes

What are NIFs?

Native Implemented Functions

NIFs VM module shared library

superfast NIFs

superfragile NIFs

Excursion: NIFs on RUST https://github.com/hansihe/rustler

VM external program stdin/out Port Drivers

superSTDIN/STDOUT Port Drivers

C-Nodes erlang network VM hidden node client or server VM
VM

supercompromise

superannoyingtomaintain

Meet: cnodex

Mount a C-Node inside your supervision tree

Please open your Terminal, Lukas.

https://github.com/Overbryd/cnodex {:cnodex, git: "…"}

https://github.com/Overbryd/myhtmlex {:myhtmlex, "~> 0.1.3"}

http://github.com/Overbryd/cnodex @Overbryd [email protected] https://stackoverﬂow.com/story/Overbryd Work with me:

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