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久々のブログです. 6月ぐらいにWebAssembly の仕様をざっくり読んだので,なんか WebAssembly でやりたいなと思って,Vim を WebAssembly に移植してブラウザで動くようにしてみました,という話です. github.com 多分実物を見ていただくのが一番早いので,下記のリンクにアクセスしてみてください. デモページはこちら(下記の注意事項を先にお読みください) 注意 デスクトップ版の Chrome か Firefox か Safari か Edge を使ってください.どうやら macOS では Safari が一番動きが良いです. デモページは全部で1MBほどのリソースを fetch します.モバイルネットワークなどからアクセスする場合はお気をつけください. keydown でキー入力を取っているので,キー入力を横取りするブラウザ拡張などが有効になっていると
As Lin Clark emphasizes in her article about Rust and WebAssembly: the goal of WebAssembly is not to replace JavaScript, but to be an awesome tool to use with JavaScript. Lots of amazing work has been done to simplify crossing the language boundary between JavaScript and WebAssembly, and you can read all about that in Alex Crichton’s post on wasm-bindgen. This post focuses on a different type of J
Googleが中心となってオープンソースで開発されているGo言語は、WindowsやmacOS、Linux、FreeBSD、iOS、Androidなど、さまざまなOSやCPUに対応したバイナリを生成できることが特長の1つとなっています。 そのGo言語のコンパイラが生成するバイナリにWebAssemblyが追加されました。WebAssemblyは、Webブラウザ上でネイティブコードに近い実行速度で高速に実行できるバイナリフォーマットです。 WebAssemblyのサポートは昨年2月から検討がはじまり、先月末に最初のコードがコミットされた状態で、現在も開発が進んでいます。 GOの今後のバージョンアップで正式にWebAssemblyがサポートされる見通しです。 Go言語はサポートするOSやCPUの種類をそれぞれ「GOOS」と「GOARCH」の値で示しています。例えばWindowsのGOOS値は「
Since March 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers. Learn moreSee full compatibilityReport feedback WebAssembly は現代のウェブブラウザーで実行できる新しい種類のコードです。ネイティブに近いパフォーマンスで動作する、コンパクトなバイナリー形式の低レベルなアセンブリー風言語です。さらに、 C/C++、C# や Rust などの言語のコンパイル先となり、それらの言語をウェブ上で実行することができます。 WebAssembly は JavaScript と並行して動作するように設計されているため、両方を連携さ
WebAssembly.Studio is an online IDE (integrated development environment) that helps you learn and teach others about WebAssembly. It’s also a Swiss Army knife that comes in handy whenever working with WebAssembly. We started working on WebAssembly Studio in late December 2017, in an attempt to merge two existing tools that we had developed: WasmExplorer and WasmFiddle. Since then, thanks to severa
Recently we’ve seen how WebAssembly is incredibly fast to compile, speeding up JS libraries, and generating even smaller binaries. We’ve even got a high-level plan for better interoperability between the Rust and JavaScript communities, as well as other web programming languages. As alluded to in that previous post, I’d like to dive into more detail about a specific component, wasm-bindgen. Today
One big 2018 goal for the Rust community is to become a web language. By targeting WebAssembly, Rust can run on the web just like JavaScript. But what does this mean? Does it mean that Rust is trying to replace JavaScript? The answer to that question is no. We don’t expect Rust WebAssembly apps to be written completely in Rust. In fact, we expect the bulk of application code will still be JS, even
Shrinking WebAssembly and JavaScript code sizes in Emscripten Emscripten is a compiler toolchain for asm.js and WebAssembly which lets you run C and C++ on the web at near-native speed. Emscripten output sizes have decreased a lot recently, especially for smaller programs. For example, here’s a little C code: #include <emscripten.h> EMSCRIPTEN_KEEPALIVE int add(int x, int y) { return x + y; } This
Making WebAssembly even faster: Firefox’s new streaming and tiering compiler People call WebAssembly a game changer because it makes it possible to run code on the web faster. Some of these speedups are already present, and some are yet to come. One of these speedups is streaming compilation, where the browser compiles the code while the code is still being downloaded. Up until now, this was just
目的 これは WebAssembly Advent Calendar 2017 23日目の記事です。 昨年、haskellのインタプリタのhugsをemscriptenを用いさまざまな困難がありましたが、printfデバッグで無事javascript(web版, nodejs版)にしてきました。 その後、firefox quantumによって上記のjavascriptは申し分ないほど高速化されたのですが、WebAssemblyによってさらに高速化できないか確認したくなり、今回asm.jsからWebAssemblyへの移行を行いました。 これがasm.jsからWebAssemblyへの移行に必要だった変更(PR)でした。 まとめると下記の5つです。 1, dlopenで読み込むshared libraryがjsからwasmになっている。 2, Module['locateFile']でwas
WebAssembly Official LogoOne of the signature features of webpack is its use of the “dependency graph” to manage and bundle assets. However, every resource that is loaded into webpack must be treated as JavaScript (this includes css, images, svgs, html, etc.). Because of this, only JavaScript is a first-class module type in webpack. The downsides of this are that assets like CSS, HTML, cannot be l
The biggest improvement this year to web performance has been the introduction of WebAssembly. Now available in Firefox and Chrome, and coming soon in Edge and WebKit, WebAssembly enables the execution of code at a low assembly-like level in the browser. Mozilla has worked closely with the games industry for several years to reach this stage: including milestones like the release of games built wi
This is the 1st article in a 3-part series: Creating a WebAssembly module instance with JavaScript Memory in WebAssembly (and why it’s safer than you think) WebAssembly table imports… what are they? WebAssembly is a new way of running code on the web. With it, you can write modules in languages like C or C++ and run them in the browser. Currently modules can’t run on their own, though. This is exp
This is the 2nd article in a 3-part series: Creating a WebAssembly module instance with JavaScript Memory in WebAssembly (and why it’s safer than you think) WebAssembly table imports… what are they? Memory in WebAssembly works a little differently than it does in JavaScript. With WebAssembly, you have direct access to the raw bytes… and that worries some people. But it’s actually safer than you mi
This is the 3rd article in a 3-part series: Creating a WebAssembly module instance with JavaScript Memory in WebAssembly (and why it’s safer than you think) WebAssembly table imports… what are they? In the first article, I introduced the four different kinds of imports that a WebAssembly module instance can have: values function imports memory tables That last one is probably a little unfamiliar.
WebAssembly, a new binary execution format for the Web, is starting to arrive in stable versions of browsers. A major goal of WebAssembly is to be fast. This post gives some technical details about how it achieves that. Of course, “fast” is relative. Compared to JavaScript and other dynamic languages, WebAssembly is fast because it is statically typed and simple to optimize. But WebAssembly is als
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