GoとRust - 並行処理編

GoとRustの変更処理を比較することで両者を深く理解する試みです。

詳しい内容やスライドでは省いたところをブログに書きました
https://zenn.dev/nasa/articles/compare_rust_go_concurrency

Transcript

1. ©2022 Wantedly, Inc.
   GoͱRust - ฒߦॲཧฤ
   \ඇެࣜ/ Go Conferenceޙ໷ࡇ
   2022/4/27 nasa (Asan Kondo)
   

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2. ©2022 Wantedly, Inc.
   ࣗݾ঺հ
   • nasa Ͱ͢
   • Backend engineer / Wantedly, in
   c
   
   • ਪનج൫ͷӡ༻։ൃ
   • DSͷੜ࢈ੑര্͛
   • কདྷͷເ͸nasaͱ͍͏ϋϯυϧωʔϜΛ΋͗औΔ͜ͱ
   • GitHub: k-nas
   a
   
   • Twitter: nasa_desu
   
   
   • Zenn: nasa 🎉 🎉 🎉 🎉 🎉
   
   
   

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3. ©2022 Wantedly, Inc.
   ࿩͢͜ͱ
   • goroutineͱ͸ͳʹ͔
   • Goͷฒߦॲཧͷ࢓૊Έ
   • goroutine(Go)ͱasync/await(Rust)ͷൺֱ
   • GoͷϥϯλΠϜɺRustͷϥϯλΠϜͷ࿩
   

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4. ©2022 Wantedly, Inc.
   ࿩͞ͳ͍͜ͱ
   • Ͳ͕ͬͪ༏Ε͍ͯΔͱ͍͏࿩Λ͢Δͭ΋Γ͸ͳ͍
   • ߏจͷҧ͍ʹ͍ͭͯ͸ಛʹ৮Εͳ͍
   • ϕʔεʹͳ͍ͬͯΔࢥ૝ʹ͍ͭͯ͸ಛʹ৮Εͳ͍
   

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5. ©2022 Wantedly, Inc.
   ໨࣍
   1. ͦΕͧΕͷฒߦϓϩάϥϛϯά
   2. ͦΕͧΕͷλεΫ
   3. ϥϯλΠϜ
   4. εέδϡʔϦϯά
   

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6. ©2021 Wantedly, Inc.
   ͦΕͧΕͷฒߦϓϩάϥϛϯά
   

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7. ©2022 Wantedly, Inc.
   • goΩʔϫʔυͰΒ͘Β͘
   • ϥϯλΠϜ͕͍͍ײ͡ʹޮ཰త
   ʹॲཧͯ͘͠ΕΔ
   ͦΕͧΕͷฒߦϓϩάϥϛϯά (Pͷฒߦϓϩάϥϛϯά
   

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8. ©2022 Wantedly, Inc.
   • RustͰ͸ϥϯλΠϜ͕૊Έ
   ࠐΈͰೖͬͯͳ͍ͷͰϥϯ
   λΠϜϥΠϒϥϦΛ࢖͏ඞ
   ཁ͕͋Δ
   • ຊൃදͰ͸tokioͱ͍͏ϥΠ
   ϒϥϦΛ࢖͏
   ͦΕͧΕͷฒߦϓϩάϥϛϯά 3VTUͷฒߦϓϩάϥϛϯά
   

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9. ©2022 Wantedly, Inc.
   • ͳΜ͔mainͷલʹมͳͷ͍ͭͯΔ
   • tokio::spawn??
   ͦΕͧΕͷฒߦϓϩάϥϛϯά 3VTUͷฒߦϓϩάϥϛϯά
   

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10. ©2022 Wantedly, Inc.
    mainલͷσΟϨΫςΟϒ͸ϥϯλ
    ΠϜΛىಈ͢Δ + mainΛasyncؔ
    ਺ʹग़དྷΔ͓·͡ͳ͍
    ͦΕͧΕͷฒߦϓϩάϥϛϯά 3VTUͷฒߦϓϩάϥϛϯά
    

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11. ©2022 Wantedly, Inc.
    tokio::spawn͸goΩʔϫʔυͱ
    ಉ͘͡λεΫΛىಈ͢Δؔ਺
    ͦΕͧΕͷฒߦϓϩάϥϛϯά 3VTUͷฒߦϓϩάϥϛϯά
    

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12. ©2022 Wantedly, Inc.
    • ඇಉظؔ਺Λఆٛ͢Δ͔൱͔
    • ϥϯλΠϜ͕ඪ४Ͱ͋Δ͔
    • ޙʹݟΔҧ͍͸ඪ४͔൱͔
    ʹΑΔ΋ͷͩͱࢥ͍ͬͯΔ
    ͦΕͧΕͷฒߦϓϩάϥϛϯά (Pͱ3VTUൺֱ
    

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13. ©2021 Wantedly, Inc.
    λεΫʹ͍ͭͯ
    ͦΕͧΕ͕ੜ੒ͨ͠λεΫʹ͍ͭͯݟ͍ͯ͘
    

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14. ©2022 Wantedly, Inc.
    • ͦΕͧΕ͕ੜ੒ͨ͠φχΧΛλε
    Ϋͱݺͼ·͢
    • ͜ΕΒʹ͍ͭͯݟ͍͖ͯ·͠ΐ͏
    λεΫʹ͍ͭͯ
    

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15. ©2022 Wantedly, Inc.
    • GoͰىಈͨ͠λεΫΛgrouting
    λεΫʹ͍ͭͯ
    • Tokio::spawnͰىಈͨ͠λεΫΛ
    ඇಉظλεΫ
    

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16. ©2021 Wantedly, Inc.
    ·ͣHPSPVUJOFʹ͍ͭͯݟ͍͖ͯ·͠ΐ͏
    

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17. ©2022 Wantedly, Inc.
    HPSPVUJOFͱ͸
    ίϧʔνϯͷந৅Խ
    

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18. ©2022 Wantedly, Inc.
    HPSPVUJOFͱ͸
    🤔🤔🤔🤔
    

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19. ©2022 Wantedly, Inc.
    • ίϧʔνϯͷงғؾΛ௫Ή
    • ؔ਺͸ݺͼग़ͨ͠Β࠷ޙ·Ͱ࣮ߦ
    • ίϧʔνϯ͸ॲཧΛதஅग़དྷΔɺ
    ్ͦͯ͠த͔Β࠶։Ͱ͖Δ
    ίϧʔνϯͱ͸
    

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20. ©2022 Wantedly, Inc.
    • goroutine΋్தͰதஅͱ࠶։Λ܁
    Γฦ͍ͯ͠Δ
    • ͜ΕΒͷ؅ཧ͸GoϥϯλΠϜ͕
    ΍͍ͬͯΔ
    ίϧʔνϯͱ͸
    

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21. ©2022 Wantedly, Inc.
    • Ͳ͜Ͱதஅɾ࠶։͢Δͷ͔?
    HSPVUJOH ࠶։தஅͷ࿩
    

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22. ©2022 Wantedly, Inc.
    • ๻Β͸࠶։ɾதஅϙΠϯτ͸໌͍ࣔͯ͠ͳ͍
    HSPVUJOH ࠶։தஅͷ࿩
    

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23. ©2022 Wantedly, Inc.
    • զʑϓϩάϥϚʔ͕໌ࣔͤͣͱ΋ϥϯλΠϜ͕ӨͰ͏·͍͜
    ͱ΍ͬͯ͘Ε͍ͯΔ
    • ͏Ζ֮͑Ͱ͕͢Լهͷ࣌ʹ੾ΓସΘΔ͸ͣ
    • time.Slee
    p
    
    • I
    O
    
    • Memory allocation
    HSPVUJOH ࠶։தஅͷ࿩
    

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24. ©2022 Wantedly, Inc.
    HSPVUJOH ࠶։தஅͷ࿩
    

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25. ©2021 Wantedly, Inc.
    ඇಉظλεΫʹ͍ͭͯݟ͍͖ͯ·͠ΐ͏
    

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26. ©2022 Wantedly, Inc.
    • Ͳ͜Ͱதஅɾ࠶։͢Δͷ͔
    ?
    
    • awaitͱॻ͍ͨͱ͖
    • ϓϩάϥϚʔ͕໌ه͢Δ
    ඇಉظλεΫ ࠶։தஅͷ࿩
    

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27. ©2022 Wantedly, Inc.
    • ϒϩοΩϯάॲཧΛࠞೖͤ͞Δͱ
    ଞͷλεΫʹ੾ΓସΘΒͣ1ͭͷλ
    εΫ͕ઐ༗ͯ͠͠·͏
    • ৻ॏ͕͞ඞཁ
    ඇಉظλεΫ ࠶։தஅͷ࿩
    

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28. ©2022 Wantedly, Inc.
    • ੑೳͷ੹೚͸ϥϯλΠϜ͕͔࣋ͭϓϩά
    ϥϚʔ͕͔࣋ͭ
    • Go͸ϓϩάϥϚʔϑϨϯυϦʔײ͕͋Δ
    • ҰํͰΦʔόʔϔου͕͋Δ(Β͍͠
    )
    
    λεΫʹ͍ͭͯ
    

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29. ©2021 Wantedly, Inc.
    ϓϦΤϯϓςΟϒɾϊϯϓϦΤϯϓςΟϒ
    

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30. ©2022 Wantedly, Inc.
    w ·Ͱ
    (PͰ΋·Ͱ͸ແݶϧʔϓͳͲ͕͋ͬͨ৔߹ʹ
    ଞͷHPSPVUJOF͕࣮ߦ͞Εͳ͍ͱ͍͏໰୊͕͋ͬ
    ͨΑ͏
    ϓϦΤϯϓςΟϒɾϊϯϓϦΤϯϓςΟϒ
    

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31. ©2022 Wantedly, Inc.
    w ͔Β
    λεΫ͕͠͹Β࣮͘ߦ͞Ε͍ͯΔ͜ͱΛݕ஌ͯ͠ϥ
    ϯλΠϜʹ໭ΔίʔυʯΛૠೖ͢Δ༻ʹͳͬͨΑ͏
    Ͱ͢ɻศརʂ
    ϓϦΤϯϓςΟϒɾϊϯϓϦΤϯϓςΟϒ
    

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32. ©2022 Wantedly, Inc.
    w (PͷΑ͏ʹϥϯλΠϜ͕λεΫͷ࣮ߦΛதஅͯ͠ଞͷλεΫͷ࣮ߦʹҠΔΑ
    ͏ͳϚϧνλεΫํ๏ΛϓϦΤϯϓςΟϒϚϧνλεΫ
    w 3VTU ͱ͍͏͔BTZODBXBJUʁ
    ͷΑ͏ʹλεΫ͕ࣗൃతʹ࣮ߦݖΛ໌͚౉͢
    Α͏ͳϚϧνλεΫํ๏ΛϊϯϓϦΤϯϓςΟϒϚϧνλεΫ·ͨ͸ɺڠௐత
    ϚϧνλεΫ
    ϓϦΤϯϓςΟϒɾϊϯϓϦΤϯϓςΟϒ
    

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33. ©2022 Wantedly, Inc.
    w (P
    w ϓϦΤϯϓςΟϒϚϧνλεΫ
    w ࠶։ɾఀࢭϙΠϯτ͸ϥϯλΠϜ͕͍͍ײ͡ʹؤுΔ
    w 3VTU
    w ϊϯϓϦΤϯϓςΟϒϚϧνλεΫ
    w ࠶։ఀࢭ͸ϓϩάϥϚʔ͕࣮૷
    ϓϦΤϯϓςΟϒɾϊϯϓϦΤϯϓςΟϒ
    

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34. ©2021 Wantedly, Inc.
    λεΫεέδϡʔϦϯά
    

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35. ©2022 Wantedly, Inc.
    λεΫεέδϡʔϦϯά
    ͋·Γҧ͍͕ͳ͍ͷͰ(PϥϯλΠ
    ϜΛݟ͍ͯ͘
    ͜͜Ͱઆ໌͍ͯ͠ΔϥϯλΠϜͷಈ࡞͸ݹ͍΋ͷ͔΋͠Ε·ͤΜ
    

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36. ©2022 Wantedly, Inc.
    λεΫεέδϡʔϦϯά
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37. ©2022 Wantedly, Inc.
    λεΫεέδϡʔϦϯά ϫʔΫεςΟʔϦϯάεέδϡʔϦϯά
    w HMPCBMUBTLRVFVFͦͷ໊ͷ௨Γάϩʔ
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38. ©2022 Wantedly, Inc.
    λεΫεέδϡʔϦϯά ϫʔΫεςΟʔϦϯάεέδϡʔϦϯά
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39. ©2022 Wantedly, Inc.
    λεΫεέδϡʔϦϯά ϫʔΫεςΟʔϦϯά
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40. ©2022 Wantedly, Inc.
    λεΫεέδϡʔϦϯά ଞͷQSPDFTTPS͔Β౪Ή
    w ଞͷQSPDFTTPSͷϩʔΧϧΩϡʔ͔Β
    λεΫΛ౪Ή͜ͱ͔Β͜ͷΞϧΰϦζ
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    Δ
    w ͜ΕʹΑΓɺͭͷQSPDFTTPSʹλε
    Ϋ͕ूதͨ͠ͱͯ͠΋ଞͷQSPDFTTPS
    ʹॲཧΛ෼ࢄ͢Δ͜ͱ͕ग़དྷɺޮ཰త
    ʹλεΫΛॲཧ͍ͯ͘͜͠ͱ͕Ͱ͖Δ
    

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    νϟΠϧυεςΟʔϦϯάɾܧଓεςΟʔϦϯά
    

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42. ©2022 Wantedly, Inc.
    νϟΠϧυεςΟʔϦϯάɾܧଓεςΟʔϦϯά
    w ͜ͷΑ͏ͳΠϝʔδͷํ͕ଟ͍ͱ༧૝͍ͯ͠·͢
    

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43. ©2021 Wantedly, Inc.
    Goͩͱ͜Ε͸ؒҧ͍Ͱ͢
    Page Title Page Subtitle
    

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44. ©2022 Wantedly, Inc.
    νϟΠϧυεςΟʔϦϯάɾܧଓεςΟʔϦϯά
    w QSPDFTTPSͰ͸AHPTBZ lIFMMPz
    A͕ಈ࡞͢Δ
    w λεΫੜ੒ޙͷॲཧ͕λεΫͱͯ͠ΤϯΩϡʔ͞ΕΔ
    

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45. ©2022 Wantedly, Inc.
    νϟΠϧυεςΟʔϦϯάɾܧଓεςΟʔϦϯά
    w ܧଓεςΟʔϦϯά͸ੑೳ্ͷར఺͕͋ΔͨΊ
    (PͰ࠾༻͞Ε͍ͯ·͢
    w ܧଓεςΟʔϦϯά͸ίϯύΠϥͷαϙʔτ͕
    ඞཁʹͳΔΒ͘͠ɺ3VTUͰ͸࠾༻Ͱ͖͍ͯͳ
    ͍ͷ͕ݱঢ়Ͱ͢
    w 3VTUͰ͸εέδϡʔϦϯάͷͱ͖ʹઆ໌ͨ͠
    λεΫ͕ΩϡʔΛग़ೖΓ͢ΔνϟΠϧυε
    ςΟʔϦϯάͱ͍͏ํࣜΛऔ͍ͬͯ·͢ɻ
    

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46. ©2021 Wantedly, Inc.
    ·ͱΊ
    

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47. ©2022 Wantedly, Inc.
    ·ͱΊ
    w (Pʹ͸ඪ४ͷϥϯλΠϜ͕͋ΔΑɺ3VTUͰ͸ϥϯλΠϜϥΠϒϥϦΛ࢖͏ඞཁ͕͋ΔΑ
    w (P͸ϥϯλΠϜ͕தஅ࠶։Λ؅ཧ͢ΔΑɺ3VTUͰ͸ϓϩάϥϚʔ͕؅ཧ͢ΔΑ
    w ϒϩοΩϯάॲཧΛࠞೖͪ͠Ό͏ͱةݥͩͶ
    w (P͸ϓϦΤϯϓςΟϒͩΑ 3VTUͩͱϊϯϓϦΤϯϓςΟϒͩΑ
    w Ͳͬͪ΋λεΫͷεέδϡʔϦϯά͸ϫʔΫεςΟʔϦϯάͱ͍͏ઓུͩΑ
    w (P͸λεΫຊମͰ͸ͳ͘ܧଓΛ౪Έ߹͍ͬͯΔΑ ܧଓϫʔΫεςΟʔϦϯά
    
    w 3VTU͸λεΫຊମΛ౪Έ߹͍ͬͯΔΑ νϟΠϧυϫʔΫεςΟʔϦϯά
    
    

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48. ©2022 Wantedly, Inc.
    Wantedly Engineering Handbook ෺ཧຊΛϓϨθϯτʂ
    ࣾ಺ͷΤϯδχΞ͕஌Δ΂͖৘ใͷ͏ͪ֎෦ʹ΋ެ։Ͱ͖Δ৘ใΛ
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