TurboModuleを用いたJSスレッドの負担軽減と Follyを用いたMainスレッドのマルチスレッド化

株式会社BluAgeの業務内容とReact Nativeの最新技術への取り組みの紹介スライドです。

Transcript

1. TurboModuleΛ༻͍ͨJSεϨουͷ ෛ୲ܰݮͱ FollyΛ༻͍ͨMainεϨουͷϚϧν εϨουԽ React Native Matsuri 2021 Taichi Akimoto 2021/10/02
2. ࣗݾ঺հ ໊લ: ѰݩଠҰ (͖͋΋ͱ͍ͨͪ) ৬ۀ: ϑϩϯτΤϯυΤϯδχΞ ※React Native͕ϝΠϯ ܦྺ: 2018೥4݄ʹגࣜձࣾBluAgeΛ૑ۀ ͓෦԰୳͠ΞϓϦͷʮΧφϦʔʯͷ։ൃɾӡ༻ @AkimotoTaichi
3. Ұؾ௨؏ͨ͠σδλϧϓϥοτϑΥʔϜΛߏங ΧφϦʔಠ઎෺݅ ΞϓϦʮΧφϦʔʯΛల։ ࣗࣾ஥հ/ૹ٬ SaaSఏڙʢސ٬؅ཧ[CRM]ʣ ௞ି؅ཧۀΛ࣮ࢪ SaaSఏڙ Ϣʔβʔ ஥հ ෺݅ݩ/؅ཧ ௞ିചങͷ྆ํͰෳ਺ϓϩμΫτΛఏڙ͠ɺ෇ՃՁ஋ΛੵΈॏͶΔ ͦΕΒΛ࿈ܞ͢Δ͜ͱʹΑͬͯɺߏ଄తͳ༏ҐੑʢMOATʣΛߏங
4. TurboModuleͱ͸
5. TurboModuleͱ͸
6. TurboModuleͱ͸
7. JSIʹΑΔ୅ସϥΠϒϥϦ Crypto DataBase Camera https://github.com/mrousavy/react-native-vision-camera
8. CodeGenʹΑΔTurboModuleͷੜ੒
9. ݁ߏ஌ΒΕ͍ͯͳ͍͕TurboModuleͷ࡞੒͸؆୯
10. TurboModuleͷ࡞੒3εςοϓ Console࣮ߦ Schema NativeͷInterfaceੜ੒
11. Schema࡞੒ e.g. Sqlite import { TurboModule, TurboModuleRegistry } from "react-native-tscodegen-types"; type KeyValue = { key: string; text: string; }; export interface Spec extends TurboModule { getDraft: (key: string) => Promise<string>; updateDraft: (draft: KeyValue) => Promise<boolean>; ... } export default TurboModuleRegistry.getEnforcing<Spec>("Poc") as Spec;
12. TurboModuleग़ྗ e.g. Sqlite namespace facebook { namespace react { static jsi::Value __hostFunction_PocModuleSchemaCxxSpecJSI_getDraft( jsi::Runtime &rt, TurboModule &turboModule, const jsi::Vaue *args, size_t count) { return static_cast<PocModuleSchemaCxxSpecJSI *>(&turboModule) ->getData(rt, args[0].getString(rt)); }
13. ࣮૷ e.g. Sqlite namespace poc { using namespace facebook::react; jsi::Value PocModule::getDraft(jsi::Runtime &rt, const jsi::String &key) { std::string keyStr = key.utf8(rt); … draftStr = DatabaseManager::getQueryExecutor().getDraft(keyStr); … this->jsInvoker_->invokeAsync([=, &innerRt]() { if (error.size()) { promise->reject(error); return; } jsi::String draft = jsi::String::createFromUtf8(innerRt, draftStr); promise->resolve(std::move(draft)); }); }; ...
14. TurboModuleʹΑͬͯJSϨΠϠʔͷෛ୲͕ܰݮ͞Εͨʂ
15. FollyʹΑΔMainεϨουͷϚϧνεϨουԽ Main thread Crypto thread DB thread Job 1 Job 2 Job 3 Job 4 Job 5 Job 6
16. NativeϨΠϠʔͷॏ͍ॲཧΛεϨουͰඇಉظʹॲཧ namespace poc { namespace jsi = facebook::jsi; class PocModule : public facebook::react::PocModuleSchemaCxxSpecJSI { std::unique_ptr<WorkerThread> databaseThread; std::unique_ptr<WorkerThread> cryptoThread;
17. ThreadSafeͳMPMCQueueͷར༻ WorkerThread::WorkerThread(const std::string name) : tasks(folly::MPMCQueue<std::unique_ptr<taskType>>(100)), name(name) { auto job = [this]() { while (true) { std::unique_ptr<taskType> lastTask; this->tasks.blockingRead(lastTask); if (lastTask == nullptr) { break; } (*lastTask)(); } }; this->thread = std::make_unique<std::thread>(job); }
18. MultiThreadingΛར༻͍ͯ͠ΔϥΠϒϥϦ ɾreact-native-multithreading https://github.com/mrousavy/react-native-multithreading reanimatedͷworkletΛར༻ͯ͠multithreadԽΛ࣮૷ ɾcomm https://github.com/CommE2E/comm/tree/master/native follyΛར༻ͯ͠multithreadԽΛ࣮૷
19. React Native͸NativeΛ଎౓Ͱ্ճΕΔ!? MultiThreading TurboModule
20. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ ෆಈ࢈ۀքςοΫʹ ڵຯ͕͋Δํ RNͷ࠷৽ಈ޲ʹ ڵຯ͕͋Δํ Meety: https://meety.net/matches/TtNbnknTpdPJ