Swift 並行性(Concurrency)を読み解く - WWDC21

Swift Concurrency関連プレゼンテーションガイド

Transcript

1. 4XJGUฒߦੑ
   $PODVSSFODZ
   ΛಡΈղ͘
   88%$
   4XJGU$PODVSSFODZؔ࿈ϓϨθϯΨΠυ
   

   View Slide

2. ࢀߟࢿྉ"QQMF%FWFMPQFS
   IUUQTBQQTBQQMFDPNKQBQQBQQMFEFWFMPQFSJE
   88%$಺༰͸ॱ࣍೔ຊޠରԠ͞Ε͍ͯ͘
   

   View Slide

3. 88%$͔Βϲ݄ɻ
   4XJGUݴޠͷ໨ۄͷBXBJUBTZOD
   BDUPS͕ൃද͞Ε·ͨ͠
   

   View Slide

4. ͕ɺϲ݄ܦͬͯ΋৽࢓
   ༷ʹશ͘׳Εͳ͍ʂ
   

   View Slide

5. 88%$ͷؔ࿈͢ΔϓϨθϯ
   ࢿྉ͸໨Λͱ͓ͨ͠ͷͰ঺հɻ
   

   View Slide

6. 88%$ͰԿ͕͓͖ͨͷ͔
   4XJGU
   ͍ͭʹBTZODBXBJU͕ಋೖ͞Ε·ͨ͠ɻBTZODBXBJU
   ͚ͩͰͳ͘ɺBDUPS!.BJO"DUPS͕ಋೖɻ
   

   View Slide

7. 88%$ͰԿ͕͓͖ͨͷ͔
   4XJGU
   ͍ͭʹBTZODBXBJU͕ಋೖ͞Ε·ͨ͠ɻBTZODBXBJU
   ͚ͩͰͳ͘ɺBDUPS!.BJO"DUPS͕ಋೖɻ
   BTZODBXBJUʹ͍ͭͯ͸88%$ҎલΑΓݴޠ࢓༷
   ͱͯ͠ఏҊ͞Ε͓ͯΓɺ৽ٕज़ʹΊ͟ͱ͍ෳ਺ͷ։ൃ
   ऀ༷ΑΓهࣄ͕ެ։͞Ε͍ͯΔɻ
   

   View Slide

8. 1SPQPTBMʹ͸ࡌ
   ͍ͬͯͳ͍4XJGU
   ͷBTZODBXBJU
   ͕ૉ੖Β͍͠ͱࢥ
   ͏ཧ࿦తഎܠ
   IUUQTRJJUBDPN
   LPIFSJUFNT
   CFBFD
   
   

   View Slide

9. ಡΈ෺ͱͯ͠͸໘ന͍ɺ
   ໘ന͍͕ผʹٕज़ͰΩϟοΩϟͨ͠
   ͍Θ͚Ͱͳ͍ͱ͍͏ͷ͕ຊԻɻ
   

   View Slide

10. &$."4DSJQUͰઌΜͯ͡ಋೖ͞Εͯ
    ͍ͨػೳ͕4XJGUʹ΍͖ͬͯͨ͋Γ͕
    ͕ͨΔؾ΋ແ͔ͬͨΓ͢Δɻ
    

    View Slide

11. ৽͍͠ݴޠ࢓༷͕ಋೖ͢Δ
    ඞཁ͕͋Δ఺ ඞવੑ
    ʹೲಘ͠ɺ
    ଉΛు༷͘ʹࣗવʹར༻Ͱ͖Δ͜ͱ͕ཧ૝Ͱ͸
    

    View Slide

12. ͱ͍͏ཧ೦ͷ΋ͱɺBTZODBXBJUBDUPSपΓ͕ಋ
    ೖ͞Εͨࡍͷ4XJGUݴޠʹ͓͚ΔฒߦੑΛѻ͏্Ͱ
    ͷϨΪϡϨʔγϣϯมߋʹ͍ͭͯղܾʹઆ໌͢Δɻ
    

    View Slide

13. 88%$ͷ
    4XJGUʹ͓͚Δฒߦੑ
    ֓ཁ
    

    View Slide

14. BTZODBXBJU
    w "TZODඇಉظΛࣔ͢म০ࢠͰ
    w BTZOD͕෇༩͞ΕΔͱBXBJUΛ࢖ͬͯॲཧऴྃ·Ͱ଴डঢ়ଶʹ͢
    Δ͜ͱΛӅṭͰ͖Δ
    w NBD04J1IPOFͰͷϚϧνεϨου্ͷॲཧ͕࣮ࡍͲ͏ͳͬͯ
    ͍Δ͔͸4XJGUίʔυهड़ऀଆ͔Β͸Ӆṭ͞Ε͍ͯΔ
    

    View Slide

15. BDUPS
    w ෳ਺ͷεϨου͔Βݺͼग़͞ΕΔ஋Λอޢ͢Δ࢓૊ΈΛDMBTTϥ
    ΠΫͳఆٛͰهड़Ͱ͖Δ
    w ϓϩύςΟ͸ෳ਺͔Βͷ஋มߋͷࡍʹBXBJUͰ଴डՄೳ
    w ϝιουΛఆٛ͢Δͱͦͷϝιου͕ݺͼऴΘΔ·Ͱ֎෦͔Βม
    ߋ͕ՃΘΒͳ͍
    w ஋ͷڝ߹Λ͚͞ΔͨΊ಺෦తʹ͸4JHOBMɺ4FNBQIPSFͳͲΞΫ
    ηε੍ޚػೳΛ࢖͍ͬͯΔ͕4XJGUίʔυهड़ऀଆ͔Β͸Ӆṭ͞
    Ε͍ͯΔɻ
    

    View Slide

16. ߏ଄Խ͞Εͨಉظॲཧ
    w "TZODBXBJUΛ֊૚తʹݺͼग़͠ͱݺͼग़͠֊૚Λߟྀͨ͠ಉظ
    ॲཧΛ࣮ݱͰ͖Δ
    w 4XJGUΑΓલ͸ಠཱͨ͠ಉظॲཧΛ·ͱΊΔͳͲ࣮ͯ͠ݱͰ
    ͖ͨ͜ͱ͕4XJGU͔Β͸σϑΥϧτͷಉظॲཧѻ͍ͱͳͬͨ
    w ͜Ε·Ͱͷಉظॲཧ͸Φϓγϣϯѻ͍ͱͳΓಠཱͨ͠ಉظॲཧͱ
    ໋໊
    w ಠཱͨ͠ಉظॲཧ͸Φϓγϣϯѻ͍ʹͳͬͨ෼ɺBTZODBXBJU
    ΑΓ͸໌ࣔతʹݺͼग़͠ඞཁ
    

    View Slide

17. !.BJO"DUPS
    w "DUPS͸ෳ਺ΞΫηε͕͋ͬͨ৔߹ͷ஋Λอޢ͢Δ࢓૊ΈΛఏڙ
    ͢Δ͚͕ͩͩͬͨ
    w !.BJO"DUPS͸଴डޙʹඞͣϝΠϯεϨου͔Βݺͼग़͞ΕΔอ
    ূ͢ΔͨΊͷ࢓૊Έ
    w 4XJGU"UUSJCVUFTͳͷͰ4XJGUͷ࢓༷͔Β͸एׯ֎ΕΔ
    w 4%,Ͱ͸ϝΠϯεϨουPSϝΠϯεϨουҎ֎ݺͼग़͔͠໌ࣔͰ
    ͖͍ͯͳ͔ͬͨ΋ͷ ؔ਺ɺΫϥεͷϓϩύςΟͳͲ
    ͕໌ࣔతʹ
    ͳͬͨ
    

    View Slide

18. ୺తʹ͍͏ͱʜ
    w ৽͍͠ϘΩϟϒϥϦʔͱͯ͠BTZODBXBJUΛಋೖ͢Δ͜ͱͰॲཧ଴
    ͪͷهड़Λ୹͘هड़Ͱ͖ΔΑ͏ʹͳͬͨɻͨͩ͠ඇಉظʹͨ͠ࡍʹى
    ͖Δτϥϒϧ͸ίʔυهड़ऀଆͷ੹೚Ͱ͋Δ͜ͱ͸มԽແ͠
    w ฒྻಉظͷฒྻੑͱߏ଄Խ͞ΕͨฒྻॲཧʹΑΓฒྻॲཧʹίʔυత
    ͳॊೈੑ͕ੜ·Ε͍ͯΔɻͦΕΛ࣮ݱ͢ΔͨΊ࣮ݱ͢ΔͨΊBTZOD
    BXBJUͰεϨουΛίʔυهड़ऀ͔ΒӅṭ͍ͯ͠ΔΑ͏ͳ΋ͷ
    w 6*ύʔπͳͲϝΠϯεϨουݺͼग़͠Λอূ͢ΔͨΊͷهड़ͱͯ͠
    !.BJO"DUPS͕௥Ճ͞Εͨɻίʔυهड़ऀ͸ݺͼग़͠ݩͷεϨουʹ
    ஫ҙΛ޲͚Δඞཁ͕͕͋ͬͨݴޠϨϕϧͰ҆શͳݺͼग़͕͠อূ͞Ε
    ͨ
    

    View Slide

19. ϓϨθϯςʔγϣϯ঺հ
    

    View Slide

20. w .FFUBTZODBXBJUJO4XJGU
    w .FFU"TZOD4FRVFODF
    w &YQMPSFTUSVDUVSFE
    DPODVSSFODZJO4XJGU
    w 1SPUFDUNVUBCMFTUBUFXJUI
    4XJGUBDUPST
    w %JTDPWFSDPODVSSFODZJO
    4XJGU6*
    ϓϨθϯςʔγϣϯ঺հ
    

    View Slide

21. .FFUBTZODBXBJUJO
    4XJGU
    IUUQTEFWFMPQFSBQQMFDPNWJEFPT
    QMBZXXED
    w BTZODΛ࢖͏ؔ਺ͷఆٛํ
    ๏ͱɺBXBJUͷ࢖͍ํʹͭ
    ͍ͯͷϓϨθϯςʔγϣ
    ϯɻ
    

    View Slide

22. .FFU"TZOD4FRVFODF
    IUUQTEFWFMPQFSBQQMFDPNWJEFPT
    QMBZXXED
    w BTZOD͕෇Ճ͞Εͨݺͼग़
    ͠Λ഑ྻԽ͢ΔͱBXBJU͠
    ͨࡍʹ΋ฒߦͯ͠ݺͼग़͞
    ΕΔ͜ͱʹ͍ͭͯͷϓϨθ
    ϯςʔγϣϯɻ
    

    View Slide

23. &YQMPSFTUSVDUVSFE
    DPODVSSFODZJO4XJGU
    IUUQTEFWFMPQFSBQQMFDPNWJEFPT
    QMBZXXED
    w "TZOD͕෇Ճ͞Εͨݺͼग़͠
    ಺෦ͰBXBJUΛ࢖͏͜ͱ͕Ͱ
    ͖Δ఺Λઆ໌ͨ͠ϓϨθϯς
    ʔγϣϯɻ
    w Τϥʔ͕͋ͬͨ৔߹ʹFSSPS
    ΛUISPXͨ͠৔߹ͷڍಈʹͭ
    ͍ͯͷݴٴ͋Γɻ
    w ಠཱͨ͠ඇಉظॲཧʹ͍ͭͯ
    ΋ຊϓϨθϯςʔγϣϯͰઆ
    ໌͍ͯ͠Δɻ
    

    View Slide

24. 1SPUFDUNVUBCMFTUBUF
    XJUI4XJGUBDUPST
    IUUQTEFWFMPQFSBQQMFDPNWJEFPT
    QMBZXXED
    w BDUPSͱ!.BJO"DUPSͷઆ
    ໌
    w ಺༰తʹ͸!.BJO"DUPSΛ
    આ໌͢ΔͨΊͷBDUPSΛઆ
    ໌͢Δͱ͍ͬͨ࿩
    

    View Slide

25. %JTDPWFSDPODVSSFODZJO
    4XJGU6*
    IUUQTEFWFMPQFSBQQMFDPNWJEFPT
    QMBZXXED
    w BTZODBXBJUBDUPS͕6*
    पΓͷίʔσΟϯάελΠ
    ϧΛม͑Δ͜ͱ͸͔͕֬ͩ
    Ұ൪ԸܙΛड͚͍ͯΔͷ͸
    4XJGU6*ͰΔ͜ͱΛࣔ͢ϓ
    Ϩθϯςʔγϣϯɻ
    

    View Slide

26. ࡶ؍
    

    View Slide

27. ίϯγϡʔϚʔιϑτ΢ΣΞʹಉظॲཧ͕ಋೖ͞Ε࢛ͯ൒ੈلᶃ
    w 8JOEPXTͷ͜Ζ͸ϚʔέςΟϯάతʹػೳ͕௥Ճ͞Ε։ൃऀ
    ΁ͷαϙʔτ͸ͳ͔ͬͨ
    w ˡ$$ݴޠͷ؀ڥ͕ϚϧνεϨουΛߟྀ͠ͳ͍ظ͕ؒଓ͍
    ͨ
    w ฒߦੑʹΑΔੑೳʹ͍ͭͯ͸+BWB7.͕αʔόʔαΠυͰূ໌͠
    ͍ͯͨ
    w ˡධՁ͞Εͨͷ͸+BWB4DSJQUͷϚϧνεϨουੑೳͩͬͨ
    w +BWB7.ݴޠͱͯ͠4DBMB͕ొ৔
    

    View Slide

28. ίϯγϡʔϚʔιϑτ΢ΣΞʹಉظॲཧ͕ಋೖ͞Ε࢛ͯ൒ੈلᶄ
    w ΞϓϦͰ͸"QQMF͕Ͱ$FOUSBM%JTQBUDI2VFVFͰCMPDLߏจͱɺ
    ม਺ͷΩϟϓνϟΛಋೖ
    w ˡίϯύΠϥʹϝεΛೖΕΔܾஅ͔Β৽ݴޠ4XJGU͕஀ੜ
    w ฒߦੑʹ͍ͭͯͷٞ࿦͕׆ൃʹͳͬͨͷ͸/PEF+4 αʔόʔαΠ
    υ+BWB4DSJQU
    ͷBTZODBXBJU
    w ˡฒߦੑΛهड़ํ๏ʹܾண͢Δ΋ϚϧνεϨουΛѻ͏ݴޠͰͷ
    ಋೖ͸ݕ౼தͩͬͨ
    

    View Slide

29. ݸਓత4XJGUฒߦੑݟղ
    

    View Slide

30. 4XJGUݴޠͷ$PODVSSFODZͰ೥લʹෆ޾
    ʹ΋ίϯγϡʔϚʔιϑτʹಋೖ͞Εͨಉ
    ظॲཧͷه๏ʹҰఆͷܾண͕͍ͭͨͷͰ͸
    

    View Slide