Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Yewにおけるoff-the-main-thread

Yosuke Onoue
October 20, 2020
620

 Yewにおけるoff-the-main-thread

Yosuke Onoue

October 20, 2020
Tweet

Transcript

  1. w ϒϥ΢β্ͷϖʔδͷ؅ཧͷଟ͘͸ ୯ҰͷϝΠϯεϨουʹΑͬͯߦΘΕ͍ͯΔ w ϝΠϯεϨουͷ࢓ࣄ w %0.ͷॲཧ w ϖʔδͷϨΠΞ΢τ w

    ΠϕϯτϋϯυϦϯά w +BWB4DSJQUͷॲཧ w FUD w +BWB4DSJQU΋جຊతʹ͸γϯάϧεϨου 8FCϒϥ΢βͷϝΠϯεϨουʢ6*εϨουʣ
  2. P⒎UIFNBJOUISFBE w 8FC8PSLFS౳Λ࢖༻ͯ͠ϝΠϯεϨουͷॲཧΛ෼ׂ͢Δ 5BTL 'SBNF 'SBNF 'SBNF 'SBNF 'SBNF 'SBNF

    .BJO5ISFBE 5BTL 'SBNF 5BTL 5BTL 5BTL 'SBNF 'SBNF 'SBNF 'SBNF 'SBNF ❌ ❌ .BJO5ISFBE 5BTL 8PSLFS 5BTL 5BTL 5BTL 5BTL 5BTL 5BTL 5BTL
  3. 8PSLFSଆͷίʔυ w ϥΠϑαΠΫϧͷॲཧ w DSFBUF w VQEBUF w IBOEMF@JOQVU 27

    impl Agent for Worker { 28 type Reach = Public<Self>; 29 type Message = Msg; 30 type Input = Request; 31 type Output = Response; 32 33 fn create(link: AgentLink<Self>) -> Self { 34 let duration = Duration::from_secs(3); 35 let callback = link.callback(|_| Msg::Updating); 36 let task = IntervalService::spawn(duration, callback); 37 Worker { 38 link, 39 _task: Box::new(task), 40 } 41 } 42 43 fn update(&mut self, msg: Self::Message) { 44 match msg { 45 Msg::Updating => { 46 info!("Tick..."); 47 } 48 } 49 } 50 51 fn handle_input(&mut self, msg: Self::Input, who: HandlerId) { 52 info!("Request: {:?}", msg); 53 match msg { 54 Request::GetDataFromServer => { 55 // TODO fetch actual data 56 self.link.respond(who, Response::DataFetched); 57 } 58 } 59 } 60 61 fn name_of_resource() -> &'static str { 62 "worker.js" 63 } 64 }
  4. ΞϓϦଆͷίʔυ 19 impl Component for Model { 20 type Message

    = Msg; 21 type Properties = (); 22 23 fn create(_: Self::Properties, link: ComponentLink<Self>) -> Self { 24 let callback = link.callback(|_| Msg::DataReceived); 25 let worker = Worker::bridge(callback); 26 27 Model { link, worker } 28 } 29 30 fn update(&mut self, msg: Self::Message) -> ShouldRender { 31 match msg { 32 Msg::SendToWorker => { 33 self.worker.send(Request::GetDataFromServer); 34 } 35 Msg::DataReceived => { 36 info!("DataReceived"); 37 } 38 } 39 true 40 } 41 42 fn view(&self) -> Html { 43 html! { 44 <div> 45 <nav class="menu"> 46 <button onclick=self.link.callback(|_| Msg::SendToWorker)>{ "Send to Thread" }</button> 47 </nav> 48 </div> 49 } 50 } 51 52 fn change(&mut self, _props: Self::Properties) -> ShouldRender { 53 false 54 } 55 }
  5. Ϗϧυ w ΞϓϦଆͱ8PSLFSଆΛͦΕͧΕϏϧυ 1 const path = require("path"); 2 const

    WasmPackPlugin = require("@wasm-tool/wasm-pack-plugin"); 3 4 module.exports = { 5 plugins: [ 6 new WasmPackPlugin({ 7 crateDirectory: path.resolve(__dirname, "crates/app"), 8 args: "--log-level warn", 9 extraArgs: "--target web --no-typescript", 10 outDir: path.resolve(__dirname, "public"), 11 outName: "app", 12 }), 13 new WasmPackPlugin({ 14 crateDirectory: path.resolve(__dirname, "crates/worker"), 15 args: "--log-level warn", 16 extraArgs: "--target no-modules --no-typescript", 17 outDir: path.resolve(__dirname, "public"), 18 outName: "worker", 19 }), 20 ], 21 devServer: { 22 contentBase: path.join(__dirname, "public"), 23 compress: true, 24 port: 9000, 25 }, 26 };