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
わかった気になる、Coroutine1.7.0のチャンネルのパフォーマンス向上
Search
RyuNen344
May 13, 2023
Technology
0
370
わかった気になる、Coroutine1.7.0のチャンネルのパフォーマンス向上
RyuNen344
May 13, 2023
Tweet
Share
More Decks by RyuNen344
See All by RyuNen344
サプライチェーン攻撃に備える
ryunen344
0
2.4k
Okioに愛を込めて
ryunen344
3
2.2k
Firebase Hostingを使ってPasskeyをandroidアプリで試してみよう
ryunen344
2
1.7k
Xcode Meets Gradle
ryunen344
0
350
K/NとNSKeyedArchiverと私
ryunen344
0
510
ComposeのModalBottomSheetは (まだ)沼
ryunen344
1
1.8k
うわっ…もしかして私のコー ド、遅すぎ…?
ryunen344
1
910
K/NでCryptoKit使いたかった
ryunen344
0
450
SwiftPM with KMMをprivateなGitHub Releaseで運用する
ryunen344
0
380
Other Decks in Technology
See All in Technology
Swiftは最高だよの話
yuukiw00w
1
250
AWS LambdaをTypeScriptで動かして分かった、Node.jsのTypeScriptサポートの利点と課題
smt7174
1
2.8k
Bill One 開発エンジニア 紹介資料
sansan33
PRO
4
12k
大事なのは、AIの精度だけじゃない!〜1円のズレも許されない経理領域とAI〜
jun_nemoto
8
4.6k
継続戦闘能⼒
sansantech
PRO
0
190
The Ultimate Showdown of Database Migration Tools
asm0dey
0
130
MCP で繋ぐ Figma とデザインシステム〜LLM を使った UI 実装のリアル〜
kimuson
1
950
Contract One Dev Group 紹介資料
sansan33
PRO
0
5.8k
オープンソースとビジネス: 位置情報の世界からみえる流れ / 札幌IT石狩鍋#2
sorami
0
220
ITエンジニアを取り巻く環境とキャリアパス / A career path for Japanese IT engineers
takatama
3
1.5k
テスト設計チュートリアル ちびこん編 ’25
omn
1
440
KMP導⼊において、マネジャーとして考えた事
sansantech
PRO
1
180
Featured
See All Featured
How to Think Like a Performance Engineer
csswizardry
23
1.6k
Building a Scalable Design System with Sketch
lauravandoore
462
33k
BBQ
matthewcrist
88
9.6k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
Into the Great Unknown - MozCon
thekraken
38
1.8k
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
eileencodes
34
2.3k
Visualization
eitanlees
146
16k
Stop Working from a Prison Cell
hatefulcrawdad
269
20k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
26k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
The Cult of Friendly URLs
andyhume
78
6.4k
Become a Pro
speakerdeck
PRO
28
5.3k
Transcript
Θ͔ͬͨؾʹͳΔɺCoroutine1.7.0ͷ νϟϯωϧͷύϑΥʔϚϯε্ 2023.05.13 KotlinConf 2023 Global in Kyoto Bunjiro Miyoshi
About Me • teamLab Inc.ॴଐ • (ࣗশ)ϚϧνϓϥοτϑΥʔϜܳਓ • ࠷ۙGoogle/TinkͷKMMϥούʔϥΠϒϥϦ࡞ͬͨ •
https://github.com/RyuNen344/tink-kmm
kotlinx.coroutine 1.7 ϦϦʔε͞Ε·ͨ͠Ͷ
Release Note
Release Note runTestͷdefault timeout͕60s͔Β10sʹมߋ͞ΕͨΓ
Release Note Kotlin NativeʹDispatchers.IO͕ొ
Release Note Kotlin NativeͷOld Memory Model͕আ͞Εͨ
Release Note Channelͷ࠶࣮
͢͜ͱɾ͞ͳ͍͜ͱ • ͢͜ͱ • چ࣮ɾ৽࣮ͷҧ͍ • ;ΜΘΓͱͨ͠Lock freeपΓͷ • ͞ͳ͍͜ͱ
• Lock freeपΓͷఆٛతʹਖ਼͍͠ղઆ • kumagi͞Μͷࢿྉ͕ͱͯษڧʹͳΓ·͢ • https://www.docswell.com/s/kumagi/ZP99EQ-lock-free • Ktorͷ3rd PartyϥΠϒϥϦͷӨڹ
ͳͥ࠶࣮ #1 • σʔλߏConcurrent Double Linked List • ͦͦޡͬͨཧΛݩʹ࣮ͯ͠ •
อकੑͷ • ઢܗԽՄೳੑͷ • ૢ࡞͕ஞ࣮࣍ߦ͞Ε͍ͯΔ͜ͱͷอূ
ͳͥ࠶࣮(Double Linked List) #1 ઌ಄ͱ࠷ޙͷϙΠϯλΛอ࣋ w w w w
ͳͥ࠶࣮(Double Linked List) #1 ཁૉྡ͢ΔͷϙΠϯλΛอ࣋
ͳͥ࠶࣮(Double Linked List) #1
ͳͥ࠶࣮(Double Linked List) #1 ৽͍͠ཁૉͷੜ DoubleLinkedListࣗମͷઌ಄ͱ چઌ಄ͷཁૉͷྡ͢ΔཁૉΛߋ৽
ͳͥ࠶࣮ #2 • ࣮͕ෳࡶʹͳ͍ͬͯͯbyte code size, dex sizeʹѱӨڹ • DCAS,
N-word CASͰ࣮ • ֦ுੑɺਖ਼֬ੑɺύϑΥʔϚϯεʹ͕͋Δ • CASɿCompare And Swap જࡏతͳσʔλڝ߹ͷ͕ൃੜͨ͠߹ͷਪଌͱमਖ਼Λࠔʹ͍ͯͨ͠
ͳͥ࠶࣮(Compare And Swap) #2
ͳͥ࠶࣮(Compare And Swap) #2 Pointerͷٙࣅίʔυ
ͳͥ࠶࣮(Compare And Swap) #2 PointerͷͱPointerʹೖͬͯΔ͖ΛνΣοΫ w w
ͳͥ࠶࣮(Compare And Swap) #2 ظͲ͓Γͷ͕Pointerʹ֨ೲ͞Ε͍ͯͨΒߋ৽
ͳͥ࠶࣮(D-Compare And Swap) #2
ͳͥ࠶࣮(D-Compare And Swap) #2 ظͲ͓Γͷ͕Pointerʹ֨ೲ͞ΕΔ·ͰԿCAS
ͲͷΑ͏ʹ࠶࣮ • σʔλߏྻͰ࣮ • ΦϒδΣΫτૢ࡞Fetch And Addʹมߋ
ͲͷΑ͏ʹ࠶࣮(Fetch And Add) Pointerʹೖ͍ͬͯͨݹ͍ΛҰ࣌อଘͯ͠ॲཧΛ࣮ߦ
ͲͷΑ͏ʹ࠶࣮(Fetch And Add) Ұ࣌อଘͨ͠ݹ͍Λݺͼग़͠ݩʹฦ٫
࠶࣮ͯ͠Ͳ͏ͳΔ • ҰൠతͳڥͰ10 ʙ 25%ߴԽ
·ͱΊ • 1.7.0ͰChannelࣗମͷ࠶࣮͕ͳ͞ΕͯύϑΥʔϚϯε্͕ͨ͠ • (Opt)BroadcastChannelܥΛআ͢Δ४උ͕ͬͨ • (Opt)͜ͷ࠶࣮ͷ͓͔͛ͰsemaphoremutexपΓͷվળೖͬͯ ͍Δ
͍͞͝ʹ ࢿྉ࡞ͬͯͨΒ1.7.1ϦϦʔε͞Εͨ😂
Ҿ༻ • https://github.com/Kotlin/kotlinx.coroutines/releases/tag/1.7.0 • https://github.com/Kotlin/kotlinx.coroutines/issues/3621 • https://github.com/Kotlin/kotlinx.coroutines/pull/3103 • https://arxiv.org/abs/2211.04986