Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
WebAssembly in NodeJS
Search
Willian Martins
October 17, 2017
Technology
4
610
WebAssembly in NodeJS
My presentation about WASM in NodeJS @ NodeJS Meetup Berlin
Willian Martins
October 17, 2017
Tweet
Share
More Decks by Willian Martins
See All by Willian Martins
Empirical Observations on the The Future of Scalable UI Architecture
wmsbill
0
140
Além do else! Categorizando Pokemóns com Pattern Matching no JavaScript
wmsbill
0
860
De volta ao Futuro do JS: As próximas features e propostas incríveis
wmsbill
0
94
Back to the future of JS II: Beyond what we can foresee
wmsbill
0
110
A, B, C. 1, 2, 3. Iterables you and me.
wmsbill
0
91
Back to the future of JS II: Beyond what we can foresee
wmsbill
0
100
Back to the future of JS.
wmsbill
0
11
Node conf ar 2018.
wmsbill
0
520
Back to the future of JS
wmsbill
1
70
Other Decks in Technology
See All in Technology
キャディでのApache Iceberg, Trino採用事例 -Apache Iceberg and Trino Usecase in CADDi--
caddi_eng
0
150
AWS全冠したので振りかえってみる
tajimon
0
150
Definition of Done
kawaguti
PRO
5
370
TODAY 看世界(?) 是我們在看扣啦!
line_developers_tw
PRO
0
260
ユーザーのプロフィールデータを活用した推薦精度向上の取り組み
yudai00
0
420
「伝える」を加速させるCursor術
naomix
0
640
Tensix Core アーキテクチャ解説
tenstorrent_japan
0
360
本部長の代わりに提案書レビュー! KDDI営業が毎日使うAIエージェント「A-BOSS」開発秘話
minorun365
PRO
14
1.9k
ゆるSRE #11 LT
okaru
1
640
工具人的一生: 開發很多 AI 工具讓我 慵懶過一生
line_developers_tw
PRO
0
240
原則から考える保守しやすいComposable関数設計
moriatsushi
3
470
QAはソフトウェアエンジニアリングを学んで実践するのが大事なの
ymty
1
460
Featured
See All Featured
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
161
15k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
30
2.1k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
3k
The Pragmatic Product Professional
lauravandoore
35
6.7k
Measuring & Analyzing Core Web Vitals
bluesmoon
7
480
Building a Scalable Design System with Sketch
lauravandoore
462
33k
A designer walks into a library…
pauljervisheath
206
24k
Product Roadmaps are Hard
iamctodd
PRO
53
11k
Navigating Team Friction
lara
186
15k
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
331
22k
Adopting Sorbet at Scale
ufuk
77
9.4k
Writing Fast Ruby
sferik
628
61k
Transcript
The Need for Speed and WebAssembly Willian Martins Autumn 2017
None
Timeline…
How did we achieve it Moore law Pushed Tech industries
to evolve until today Allowed huge computation power even on small devices
All this power for what? Faster applications More immersive games
Virtual reality Augmented reality Live video/image processing Big Data/Machine learning
The languages over time
But what about JS?
JS - Early days Created in 1995 by Brendan Eich
Was written in 11 days Designed to be easy and simple Designed to be a glue code for dynamic Web
None
JS - 2008 until now 2008 - JIT Compiler by
google w/ Chrome Jump of performance Allowed more complex applications What is the next step?
Willian Elia @wmsbill
None
WE’RE HIRING!!
What is WebAssembly?
What’s WebAssembly? New binary format Run compiled programs (C, C++,
Rust) on a browser Works alongside Javascript Performance and flexibility API
Why WebAssembly is faster?
V8 - JiT in action
V8 - JiT in action
V8 - JiT in action
V8 - JiT in action
V8 - JiT in action
V8 - JiT in action
V8 - JiT in action
JiT: Code life cycle in summary 1. Parse 2. Compile
3. Optimize (de-optimize) 4. Execute 5. Garbage Collector
WebAssembly
WebAssembly is fast Parse Compile Optimize Execute GC Decode Compile
+ Optimize Execute JS WASM
WebAssembly is fast WASM is more compact -> Faster FETCH
of the source WASM is closer to machine code -> Faster DECODING, COMPILING and OPTIMISING No need to RE-OPTIMISE No garbage collection
So WebAssembly looks fast, let’s see how to use it
How to run WASM modules Current situation: not possible to
run WASM modules on their own Need for some Javascript glue
WebAssembly JS API 1. Fetch/Load the module binary 2. Instantiate
it 3. Access exported functionalities
fs.readFile(‘./module.wasm’, async function(err, file) => { const { instance }
= await WebAssembly.instantiate(file); // Do something with the compiled results! });
How to generate a WASM file
Compile C to WASM + JS WASM emcc my-module.c -o
my-module.js -s WASM=1
Then we can simply import the generated JS code as
a module
Export functions to JS Keyword EMSCRIPTEN_KEEPALIVE EMSCRIPTEN_KEEPALIVE int sum(int x,
int y) { return x + y; } Expose only the interface of the WASM module to JS
What about WebAssembly memory? How can we access it?
Memory management Emscripten provide three useful functions to manage WebAssembly
memory _malloc(memoryNeeded) getValue(ptr, type) setValue(ptr, value, type)
Elia @eliamain
DEMO TIME
The WASM implementation was still slower
Why??
JIT handover
“Currently, calling a WebAssembly function in JS code is slower
than it needs to be. The JIT doesn’t know how to deal directly with WebAssembly, so it has to route the WebAssembly to something that does. … This can be up to 100x slower than it would be if the JIT knew how to handle it directly. ” Lin Clark
The future of WebAssembly
Future features Formal Specification Threads supports SIMD acronym to Single
Instruction Multiple Data (back to Stage 3 on TC39) Exception handling Garbage collection Direct DOM access ES6 Module integration
Danke! Thank you!
What about Native modules?