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)
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 🎉 🎉 🎉 🎉 🎉
3. ©2022 Wantedly, Inc. ࿩͢͜ͱ • goroutineͱ͸ͳʹ͔ • Goͷฒߦॲཧͷ࢓૊Έ • goroutine(Go)ͱasync/await(Rust)ͷൺֱ • GoͷϥϯλΠϜɺRustͷϥϯλΠϜͷ࿩
4. ©2022 Wantedly, Inc. ࿩͞ͳ͍͜ͱ • Ͳ͕ͬͪ༏Ε͍ͯΔͱ͍͏࿩Λ͢Δͭ΋Γ͸ͳ͍ • ߏจͷҧ͍ʹ͍ͭͯ͸ಛʹ৮Εͳ͍ • ϕʔεʹͳ͍ͬͯΔࢥ૝ʹ͍ͭͯ͸ಛʹ৮Εͳ͍
5. ©2022 Wantedly, Inc. ໨࣍ 1. ͦΕͧΕͷฒߦϓϩάϥϛϯά 2. ͦΕͧΕͷλεΫ 3. ϥϯλΠϜ 4. εέδϡʔϦϯά
6. ©2021 Wantedly, Inc. ͦΕͧΕͷฒߦϓϩάϥϛϯά
7. ©2022 Wantedly, Inc. • goΩʔϫʔυͰΒ͘Β͘ • ϥϯλΠϜ͕͍͍ײ͡ʹޮ཰త ʹॲཧͯ͘͠ΕΔ ͦΕͧΕͷฒߦϓϩάϥϛϯά (Pͷฒߦϓϩάϥϛϯά
8. ©2022 Wantedly, Inc. • RustͰ͸ϥϯλΠϜ͕૊Έ ࠐΈͰೖͬͯͳ͍ͷͰϥϯ λΠϜϥΠϒϥϦΛ࢖͏ඞ ཁ͕͋Δ • ຊൃදͰ͸tokioͱ͍͏ϥΠ ϒϥϦΛ࢖͏ ͦΕͧΕͷฒߦϓϩάϥϛϯά 3VTUͷฒߦϓϩάϥϛϯά
9. ©2022 Wantedly, Inc. • ͳΜ͔mainͷલʹมͳͷ͍ͭͯΔ • tokio::spawn?? ͦΕͧΕͷฒߦϓϩάϥϛϯά 3VTUͷฒߦϓϩάϥϛϯά
10. ©2022 Wantedly, Inc. mainલͷσΟϨΫςΟϒ͸ϥϯλ ΠϜΛىಈ͢Δ + mainΛasyncؔ ਺ʹग़དྷΔ͓·͡ͳ͍ ͦΕͧΕͷฒߦϓϩάϥϛϯά 3VTUͷฒߦϓϩάϥϛϯά
11. ©2022 Wantedly, Inc. tokio::spawn͸goΩʔϫʔυͱ ಉ͘͡λεΫΛىಈ͢Δؔ਺ ͦΕͧΕͷฒߦϓϩάϥϛϯά 3VTUͷฒߦϓϩάϥϛϯά
12. ©2022 Wantedly, Inc. • ඇಉظؔ਺Λఆٛ͢Δ͔൱͔ • ϥϯλΠϜ͕ඪ४Ͱ͋Δ͔ • ޙʹݟΔҧ͍͸ඪ४͔൱͔ ʹΑΔ΋ͷͩͱࢥ͍ͬͯΔ ͦΕͧΕͷฒߦϓϩάϥϛϯά (Pͱ3VTUൺֱ
13. ©2021 Wantedly, Inc. λεΫʹ͍ͭͯ ͦΕͧΕ͕ੜ੒ͨ͠λεΫʹ͍ͭͯݟ͍ͯ͘
14. ©2022 Wantedly, Inc. • ͦΕͧΕ͕ੜ੒ͨ͠φχΧΛλε Ϋͱݺͼ·͢ • ͜ΕΒʹ͍ͭͯݟ͍͖ͯ·͠ΐ͏ λεΫʹ͍ͭͯ
15. ©2022 Wantedly, Inc. • GoͰىಈͨ͠λεΫΛgrouting λεΫʹ͍ͭͯ • Tokio::spawnͰىಈͨ͠λεΫΛ ඇಉظλεΫ
16. ©2021 Wantedly, Inc. ·ͣHPSPVUJOFʹ͍ͭͯݟ͍͖ͯ·͠ΐ͏
17. ©2022 Wantedly, Inc. HPSPVUJOFͱ͸ ίϧʔνϯͷந৅Խ
18. ©2022 Wantedly, Inc. HPSPVUJOFͱ͸ 🤔
    🤔
    🤔
    🤔
    
19. ©2022 Wantedly, Inc. • ίϧʔνϯͷงғؾΛ௫Ή • ؔ਺͸ݺͼग़ͨ͠Β࠷ޙ·Ͱ࣮ߦ • ίϧʔνϯ͸ॲཧΛதஅग़དྷΔɺ ్ͦͯ͠த͔Β࠶։Ͱ͖Δ ίϧʔνϯͱ͸
20. ©2022 Wantedly, Inc. • goroutine΋్தͰதஅͱ࠶։Λ܁ Γฦ͍ͯ͠Δ • ͜ΕΒͷ؅ཧ͸GoϥϯλΠϜ͕ ΍͍ͬͯΔ ίϧʔνϯͱ͸
21. ©2022 Wantedly, Inc. • Ͳ͜Ͱதஅɾ࠶։͢Δͷ͔? HSPVUJOH ࠶։தஅͷ࿩
22. ©2022 Wantedly, Inc. • ๻Β͸࠶։ɾதஅϙΠϯτ͸໌͍ࣔͯ͠ͳ͍ HSPVUJOH ࠶։தஅͷ࿩
23. ©2022 Wantedly, Inc. • զʑϓϩάϥϚʔ͕໌ࣔͤͣͱ΋ϥϯλΠϜ͕ӨͰ͏·͍͜ ͱ΍ͬͯ͘Ε͍ͯΔ • ͏Ζ֮͑Ͱ͕͢Լهͷ࣌ʹ੾ΓସΘΔ͸ͣ • time.Slee p • I O • Memory allocation HSPVUJOH ࠶։தஅͷ࿩
24. ©2022 Wantedly, Inc. HSPVUJOH ࠶։தஅͷ࿩
25. ©2021 Wantedly, Inc. ඇಉظλεΫʹ͍ͭͯݟ͍͖ͯ·͠ΐ͏
26. ©2022 Wantedly, Inc. • Ͳ͜Ͱதஅɾ࠶։͢Δͷ͔ ? • awaitͱॻ͍ͨͱ͖ • ϓϩάϥϚʔ͕໌ه͢Δ ඇಉظλεΫ ࠶։தஅͷ࿩
27. ©2022 Wantedly, Inc. • ϒϩοΩϯάॲཧΛࠞೖͤ͞Δͱ ଞͷλεΫʹ੾ΓସΘΒͣ1ͭͷλ εΫ͕ઐ༗ͯ͠͠·͏ • ৻ॏ͕͞ඞཁ ඇಉظλεΫ ࠶։தஅͷ࿩
28. ©2022 Wantedly, Inc. • ੑೳͷ੹೚͸ϥϯλΠϜ͕͔࣋ͭϓϩά ϥϚʔ͕͔࣋ͭ • Go͸ϓϩάϥϚʔϑϨϯυϦʔײ͕͋Δ • ҰํͰΦʔόʔϔου͕͋Δ(Β͍͠ ) λεΫʹ͍ͭͯ
29. ©2021 Wantedly, Inc. ϓϦΤϯϓςΟϒɾϊϯϓϦΤϯϓςΟϒ
30. ©2022 Wantedly, Inc. w ·Ͱ
    (PͰ΋·Ͱ͸ແݶϧʔϓͳͲ͕͋ͬͨ৔߹ʹ ଞͷHPSPVUJOF͕࣮ߦ͞Εͳ͍ͱ͍͏໰୊͕͋ͬ ͨΑ͏
    ϓϦΤϯϓςΟϒɾϊϯϓϦΤϯϓςΟϒ
31. ©2022 Wantedly, Inc. w ͔Β
    λεΫ͕͠͹Β࣮͘ߦ͞Ε͍ͯΔ͜ͱΛݕ஌ͯ͠ϥ ϯλΠϜʹ໭ΔίʔυʯΛૠೖ͢Δ༻ʹͳͬͨΑ͏ Ͱ͢ɻศརʂ ϓϦΤϯϓςΟϒɾϊϯϓϦΤϯϓςΟϒ
32. ©2022 Wantedly, Inc. w (PͷΑ͏ʹϥϯλΠϜ͕λεΫͷ࣮ߦΛதஅͯ͠ଞͷλεΫͷ࣮ߦʹҠΔΑ ͏ͳϚϧνλεΫํ๏ΛϓϦΤϯϓςΟϒϚϧνλεΫ
    w 3VTU ͱ͍͏͔BTZODBXBJUʁ ͷΑ͏ʹλεΫ͕ࣗൃతʹ࣮ߦݖΛ໌͚౉͢ Α͏ͳϚϧνλεΫํ๏ΛϊϯϓϦΤϯϓςΟϒϚϧνλεΫ·ͨ͸ɺڠௐత ϚϧνλεΫ ϓϦΤϯϓςΟϒɾϊϯϓϦΤϯϓςΟϒ
33. ©2022 Wantedly, Inc. w (P
    w ϓϦΤϯϓςΟϒϚϧνλεΫ
    w ࠶։ɾఀࢭϙΠϯτ͸ϥϯλΠϜ͕͍͍ײ͡ʹؤுΔ
    w 3VTU
    w ϊϯϓϦΤϯϓςΟϒϚϧνλεΫ
    w ࠶։ఀࢭ͸ϓϩάϥϚʔ͕࣮૷ ϓϦΤϯϓςΟϒɾϊϯϓϦΤϯϓςΟϒ
34. ©2021 Wantedly, Inc. λεΫεέδϡʔϦϯά
35. ©2022 Wantedly, Inc. λεΫεέδϡʔϦϯά ͋·Γҧ͍͕ͳ͍ͷͰ(PϥϯλΠ ϜΛݟ͍ͯ͘ ͜͜Ͱઆ໌͍ͯ͠ΔϥϯλΠϜͷಈ࡞͸ݹ͍΋ͷ͔΋͠Ε·ͤΜ
36. ©2022 Wantedly, Inc. λεΫεέδϡʔϦϯά w λεΫ͸ʹ.ݸͷ04εϨου্ʹ ߏங͞Εͨ/ݸͷάϦʔϯεϨου ্Ͱ࣮ߦ͞Ε·͢ɻ
    w ./Ϟσϧͱݺ͹ΕΔ΋ͷͰ͢ ./Ϟσϧ
37. ©2022 Wantedly, Inc. λεΫεέδϡʔϦϯά ϫʔΫεςΟʔϦϯάεέδϡʔϦϯά w HMPCBM
    UBTL
    RVFVF
    ͦͷ໊ͷ௨Γάϩʔ όϧͳλεΫΩϡʔ
    w MPDBM
    UBTL
    RVFVF
    PTεϨουʹ͖ͭͭ ͷϩʔΧϧλεΫΩϡʔ͕͋Δ
    w QSPDFTTPS
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    w 04
    UISFBE
38. ©2022 Wantedly, Inc. λεΫεέδϡʔϦϯά ϫʔΫεςΟʔϦϯάεέδϡʔϦϯά w λεΫΛফԽͨ͠ͱ͖ͷಈ͖
39. ©2022 Wantedly, Inc. λεΫεέδϡʔϦϯά ϫʔΫεςΟʔϦϯά w λεΫͷ୳ࡧ͕࢝ΊΔ
    w ୳ࡧॱং͸ϥϯλΠϜʹΑͬͯҧ͏͔΋
40. ©2022 Wantedly, Inc. λεΫεέδϡʔϦϯά ଞͷQSPDFTTPS͔Β౪Ή w ଞͷQSPDFTTPSͷϩʔΧϧΩϡʔ͔Β λεΫΛ౪Ή͜ͱ͔Β͜ͷΞϧΰϦζ Ϝ͸ϫʔΫεςΟʔϦϯάͱݺ͹Εͯ Δ
    w ͜ΕʹΑΓɺͭͷQSPDFTTPSʹλε Ϋ͕ूதͨ͠ͱͯ͠΋ଞͷQSPDFTTPS ʹॲཧΛ෼ࢄ͢Δ͜ͱ͕ग़དྷɺޮ཰త ʹλεΫΛॲཧ͍ͯ͘͜͠ͱ͕Ͱ͖Δ
41. ©2021 Wantedly, Inc. νϟΠϧυεςΟʔϦϯάɾܧଓεςΟʔϦϯά
42. ©2022 Wantedly, Inc. νϟΠϧυεςΟʔϦϯάɾܧଓεςΟʔϦϯά w ͜ͷΑ͏ͳΠϝʔδͷํ͕ଟ͍ͱ༧૝͍ͯ͠·͢
43. ©2021 Wantedly, Inc. Goͩͱ͜Ε͸ؒҧ͍Ͱ͢ Page Title Page Subtitle
44. ©2022 Wantedly, Inc. νϟΠϧυεςΟʔϦϯάɾܧଓεςΟʔϦϯά w QSPDFTTPSͰ͸AHP
    TBZ lIFMMPz A͕ಈ࡞͢Δ
    w λεΫੜ੒ޙͷॲཧ͕λεΫͱͯ͠ΤϯΩϡʔ͞ΕΔ
45. ©2022 Wantedly, Inc. νϟΠϧυεςΟʔϦϯάɾܧଓεςΟʔϦϯά w ܧଓεςΟʔϦϯά͸ੑೳ্ͷར఺͕͋ΔͨΊ (PͰ࠾༻͞Ε͍ͯ·͢
    w ܧଓεςΟʔϦϯά͸ίϯύΠϥͷαϙʔτ͕ ඞཁʹͳΔΒ͘͠ɺ3VTUͰ͸࠾༻Ͱ͖͍ͯͳ ͍ͷ͕ݱঢ়Ͱ͢
    w 3VTUͰ͸εέδϡʔϦϯάͷͱ͖ʹઆ໌ͨ͠ λεΫ͕ΩϡʔΛग़ೖΓ͢ΔνϟΠϧυε ςΟʔϦϯάͱ͍͏ํࣜΛऔ͍ͬͯ·͢ɻ
46. ©2021 Wantedly, Inc. ·ͱΊ
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
48. ©2022 Wantedly, Inc. Wantedly Engineering Handbook ෺ཧຊΛϓϨθϯτʂ ࣾ಺ͷΤϯδχΞ͕஌Δ΂͖৘ใͷ͏ͪ֎෦ʹ΋ެ։Ͱ͖Δ৘ใΛ
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