Kotlin Native in 1.6

Transcript

1. Kotlin/Native in 1.6
   2011.11.16 Mobileษڧձ Wantedly × νʔϜϥϘ
   Bunjiro Miyoshi
   

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2. About Me
   • (ࣗশ)ϚϧνϓϥοτϑΥʔϜܳਓ
   
   
   • KMM, Flutter etc...
   
   
   • ΞΠίϯ͕ϒϩοίϦʔͩͬͨΓɺγϯόϧͩͬͨΓ
   

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3. KMM will go Beta in Spring 2022
   

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4. Kotlin/Native 1.6ͷ໨ۄػೳ
   ......ͷલʹ
   

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5. ͝ଘ͡Ͱ͔͢ʁ
   
   
   Kotlin/Native 1.5ͷػೳ
   

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6. Kotlin 1.5.0
   • Performance޲্
   
   
   • Memory Leak Checkerͷެ։
   
   
   • ಺෦։ൃ༻ύϥϝʔλ͕ެ։͞Εͨ
   

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7. Kotlin 1.5.20
   • Performance޲্
   
   
   • KDocΛObjective-C Headerʹग़ྗՄೳʹͳͬͨ
   
   
   • JavaDocͷKotlinόʔδϣϯ(https://kotlinlang.org/docs/kotlin-
   doc.html)
   
   
   • Dokka(https://github.com/Kotlin/dokka)Λ࢖͏ͱ͓खܰʹυΩϡ
   ϝϯτΛੜ੒Ͱ͖Δ
   

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8. Kotlin 1.5.20 KDoc
   • build.gradleͰcompilerArgsʹ-Xexport-kdocΛ௥Ճ
   

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9. Kotlin 1.5.20 KDoc
   👇
   

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10. Kotlin 1.5.30
    • Apple Silicon Support
    
    
    • arm64ܥͷαϙʔτ
    
    
    • CocoaPods Gradle Pluginͷ֦ு
    
    
    • Swift 5.5 async/awaitޓ׵ੑ޲্
    
    
    • Companion Objectͷޓ׵ੑ޲্
    

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11. Kotlin 1.5.30 CocoaPods Gradle Plugin
    

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12. Kotlin 1.5.30 Swift 5.5 async/await
    • kotlinͷsuspendؔ਺ͷޓ׵ࣗମ͸kotlin 1.4Ͱಋೖ
    
    
    • Swift/Objective-CڞʹCompletion Handlerͱͯ͠ఏڙ͞Ε͍ͯͨ
    
    
    • Swift5.5Ҏ߱ʹ͍ͭͯ͸async/awaitͱͯ͠kotlinͷsuspendؔ਺Λ
    ࢖͑Δ
    

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13. Kotlin 1.5.30 Companion Object
    👉
    

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14. Kotlin/Native 1.6ͷ໨ۄػೳ
    ຊ୊ʹ໭ͬͯ
    

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15. ৽͍͠Memory Managementͷొ৔
    
    
    (experimental)
    

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16. WARNING
    
    
    Kotlin 1.6 RC2Ͱͷ಺༰Ͱ͢
    
    
    (લ೔ʹͳͬͯ1.6 Stable͕Release͞Ε·ͨ͠😢)
    

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17. େࡶ೺ʹݴ͏ͱ......
    • Tracing Garbage Collection͕ಋೖ͞Εͨ
    
    
    • freeze, @SharedImmutable, @ThreadLocal౳ͷKotlin/Nativeಛ༗ͷه
    ड़͕ෆཁʹͳͬͨ*
    

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18. ݱঢ়ͷMemory Management....ͷલʹ
    JVM/android Swift, Objective-C/iOS
    Tracing Garbage Collection Automatic Reference Counting
    Full GCͷ૸Δͱ͢΂͕ͯࢭ·Δ͜ͱ͕͋Δ
    (Stop The World)
    compile timeʹΧ΢ϯτ͢ΔॲཧΛຒΊࠐΉ
    
    
    increment, decrement͢ΔॲཧͷͨΊϧʔϓ
    ౳ͷॲཧͰΦʔόʔϔου͕ൃੜ
    

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19. ݱঢ়ͷMemory Management
    0ME /FX
    Deferred Reference Counting
    GC
    Stop The World mark and
    sweep GC
    εϨουͷϒϩοΫΛճආ͢Δඞཁ͕͋Δ(ཁ
    freeze)
    
    
    GCͷλΠϛϯάΛԆظͤ͞ΔͨΊස౓͸ݮΔ
    ͕ॲཧ͕࣌ؒ௕͘ͳΔ
    freeze͠ͳͯ͘΋εϨουΛލ͍ͰΦϒδΣΫ
    τͱϓϩύςΟʹΞΫηεͰ͖Δ*
    
    
    ύϑΥʔϚϯεѱ͍(εϨου͕ࢭ·Δ)
    ΞϧΰϦζϜ͸ݕ౼த
    

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20. Ͳ͏มΘΔʁ
    • ࠷্ҐϓϩύςΟͷ஗ԆॳظԽ
    
    
    • ࠷ॳʹΞΫηεͨ͠λΠϛϯάͰॳظԽ͞ΕΔΑ͏ʹ
    
    
    • ࠓޙ΋ϓϩάϥϜىಈ࣌ʹॳظԽͤ͞ͳ͚Ε͹ͳΒͳ͍΋ͷ͸
    @EagerInitializationΛ෇༩
    
    
    • ݪଇfreezeෆཁ
    
    
    • AtomicReference͸ඞཁ
    
    
    • by lazy {}͕εϨουηʔϑϞʔυΛαϙʔτ
    

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21. ࣮ࡍͷϝϞϦ࢖༻ྔͷΠϝʔδ
    • ը໘ભҠͱϦετੜ੒͢ΔΞϓϦ
    
    
    • Generate instanceϘλϯΛԡ͢ͱ
    data classͷϦετΛ10ສݸੜ੒͢Δ
    
    
    • Run GCϘλϯΛԡ͢ͱGCΛڧ੍త
    ʹ૸ΒͤΔ
    

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22. ࣮ࡍͷϝϞϦ࢖༻ྔͷΠϝʔδ
    ΞϓϦىಈ GCΛΩοΫ
    Ϧετը໘ʹભҠ
    20ສݸͷϦετੜ੒
    Emptyը໘ʹભҠ
    ݩը໘ʹ໭Δ
    ᶃ
    ᶄ
    ᶅ ᶆ
    ᶇ
    ᶈ
    

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23. ࣮ࡍͷϝϞϦ࢖༻ྔͷΠϝʔδ Old
    ᶃ ᶄ ᶅ ᶆ ᶇ ᶈ
    

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24. ࣮ࡍͷϝϞϦ࢖༻ྔͷΠϝʔδ New
    ᶃ ᶄ ᶅ ᶆ ᶇ ᶈ
    

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25. ࣮ࡍͷϝϞϦ࢖༻ྔͷΠϝʔδ
    • ࠓͷΞϧΰϦζϜͩͱKotlin/NativeଆͰॲཧதʹ࢖༻ͨ͠ϝϞϦ͕݁
    ߏ࢒Δ
    
    
    • େ͛͞ͳྫͳͷͰ࣮࢖༻Ͱ͸ී௨ʹ࢖͑ͦ͏
    🤔Ͳ͏ͯ͠΋GCΛ૸Β͍ͤͨ৔߹΋͋Δ͔΋
    

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26. ௕͍ఀࢭ࣌ؒɾΩϧ
    
    
    ϦεΫΛݮΒͨ͢Ίʹ
    

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27. ProgrammaticallyʹGCΛΩοΫ͢Δ
    • GCͷΞϧΰϦζϜͷ੍ݶͱͯ͠εϨουͷఀࢭ࣌ؒ͸ώʔϓ಺ͷΦ
    ϒδΣΫτ਺ʹґଘ͢Δ
    
    
    • iOS͸ΞϓϦͷঢ়ଶΛѻ͏ػೳ͕ͳ͍ͷͰόοΫάϥ΢ϯυʹҠߦ͠
    ͨ౳ΛΩοΫʹGCΛ૸ΒͤΔ͜ͱ͕Ͱ͖ͳ͍ͨΊOSʹΞϓϦ͕Ωϧ
    ͞ΕΔ֬཰͕ߴ·Δ
    👉ProgrammaticallyʹGCΛΩοΫͨ͘͠ͳΔ
    

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28. ProgrammaticallyʹGCΛΩοΫ͢Δ
    • kotlin.native.internalʹఆٛ͞Ε͍ͯΔGC.ktͱCleaner.ktΛ࢖༻͢Δ
    
    
    • ͦΕͧΕϦιʔεղফʹఏڙ͞Ε͍ͯΔinterface
    
    
    • C++ίʔυʹinteropͯ͋͠Γɺͦ͜ͰϝϞϦղ์Λߦ͏
    
    
    • σϑΥϧτͰ͸ެ։͞Ε͍ͯͳ͍ͷͰwrapper functionΛ༻ҙͯ͠ݺͼग़ͤΔ
    Α͏ʹͯ͋͛͠Δ
    
    
    • جຊతʹ͸Kotlin/Native Runtime͕ࣗಈͰGCΛΩοΫ͢ΔͷͰ࢖༻ස౓͸௿
    ͍(͸ͣ)
    

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29. ProgrammaticallyʹGCΛΩοΫ͢Δ
    ࣗಈͰ૸ΔGCͰղܾͰ͖ͳ͍΋ͷʹؔ͠
    ͯ͸ࠨهͷϝιουΛୟ͍ͯ΍Δ(ex.
    AppDelegate#applicationDidEnterBackground)
    

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30. ϥΠϒϥϦͷରԠঢ়گ
    • Ktor
    
    
    • 2.0.0ͰରԠ͞Εͨόʔδϣϯ͕stableʹͳΔ
    
    
    • eapΛࢼ͢৔߹͸1.6.2-native-mm-eap-196
    
    
    • Coroutine
    
    
    • 1.5.3ͰstableʹͳΓͦ͏
    
    
    • eapΛࢼ͢৔߹͸1.5.1-new-mm-dev2
    
    
    • SQLDelight
    
    
    • ಈ͔ͳ͍ࢫͷissueཱ͕͍ͬͯΔ (https://github.com/cashapp/sqldelight/issues/2556)
    
    
    • eapʹରԠ͸͠ͳ͍༷ࢠͳͷͰkotlinଆͷnew mm͕ରԠ͞Ε͔ͯΒʹͳΓͦ͏
    

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31. ·ͱΊ
    • Kotlin/Nativeʹ৽͍͠ϝϞϦϚωʔδϝϯτͷ࢓૊Έ͕ಋೖ͞Εɺ
    Kotlin/Nativeಛ༗ͷهड़͕ݮΒͤΔΑ͏ʹͳͬͨ
    
    
    • KtorͷHttpClientEngineੜ੒पΓ͕͔ͳΓָʹͳͬͯخ͍͠
    
    
    • ύϑΥʔϚϯε͸·ͩ·ͩ޲্͞Εͦ͏
    

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32. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
    

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33. ࢀߟࢿྉ
    • σϞΞϓϦ(https://github.com/RyuNen344/koin-mpp-sample/releases/tag/newmm)
    
    
    • Kotlin/Native Memory Management Update(https://blog.jetbrains.com/kotlin/
    2021/05/kotlin-native-memory-management-update/)
    
    
    • Prototype a new garbage collector(https://youtrack.jetbrains.com/issue/KT-42296)
    
    
    • Try the New Kotlin/Native Memory Manager Development Preview(https://
    blog.jetbrains.com/kotlin/2021/08/try-the-new-kotlin-native-memory-manager-
    development-preview/)
    
    
    • NEW_MM.md(https://github.com/JetBrains/kotlin/blob/master/kotlin-native/
    NEW_MM.md)
    

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