Strict Concurrencyにしたらdeinitでクラッシュする話

by Shetommy

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4USJDU$PODVSSFODZʹͨ͠Β EFJOJU で Ϋϥογϡ͢Δ࿩ 💥

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࣯ ͠ͱΈ w ݱࡏࣾͰۈ຿ w ࠷͍ۙ͢͝ͱࢥͬͨΞϓϦ͸:"."1 IUUQTXXXTIFUPNNZDPN 2

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3 5-%3

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4 4XJGUY4USJDU$PODVSSFODZͰ EFJOJUʹTFMGͷΩϟϓνϟ͕ ೖͬͯΔͱ💥Ϋϥογϡ͠·͢

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5 ؾΛ͚ͭ·͠ΐ͏

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6 ͋Γ͕ͱ͏͍͟͝·ͨ͠

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7 ࣌ؒ༨ͬͨͷͰ΋͏গ͠࿩͠·͢

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8 4USJDU$PODVSSFODZ

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11 .BJO"DUPS͡Όͳ͍ͱ ౖΒΕͯΔ͔Β .BJO"DUPSʹ͠Α͏

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12 ˞9DPEFͷલ͸ϫʔχϯάग़ͳ͔ͬͨʁ

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13 ࣮ߦ

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14 💥

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15 ղઆʂ

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16 .BJO"DUPS

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17 .BJO"DUPS /POJTPMBUFE

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18 1. Non-isolated 2. Isolated to an actor value 3. Isolated to a global actor https://www.swift.org/migration/documentation/swift-6-concurrency-migration-guide/dataracesafety#Isolation-Domains

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19 1. ΞΫλʔִ཭ͳ͠ 2. ΧελϜΞΫλʔ 3. άϩʔόϧΞΫλʔ https://www.swift.org/migration/documentation/swift-6-concurrency-migration-guide/dataracesafety#Isolation-Domains

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22 ͳͷͰ🆖

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23 ͜Ε͸ʁ

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24 TFMGͷԆ໋͸࣮ߦ࣌Ϋϥογϡ https://www.swift.org/migration/documentation/swift-6-concurrency-migration-guide/commonproblems#Non-Isolated-Deinitialization

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25 ɾݩʑEFJOJU͸TFMGͷࢀরϦεΫ͕͋ͬͨ ɾTFMGͷࢀরΧ΢ϯτ͕ʹͳͬͨͱ͖ ݺ͹ΕΔͷ͕EFJOJU ɾEFJOJUͷதͰߋʹTFMGΛࢀরͯ͠ɺ ࢀরΧ΢ϯτͱͳΔ ɾͳͷʹίϯύΠϥͷܯࠂ͕ͳ͔ͬͨ

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26 ରࡦ

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27 https://www.swift.org/migration/documentation/swift-6-concurrency-migration-guide/commonproblems#Non-Isolated-Deinitialization

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28 ɾEFJOJUͷॲཧ͸ಉظతʹߦΘͳͯ͘ྑ͍έʔε͕΄ͱΜͲ ɾඇߏ଄ԽλεΫΛ࢖ִͬͯ཭͞ΕͨσʔλΛѻ͏ ɾؒҧͬͯ΋TFMG͸Ωϟϓνϟ͠ͳ͍ʂ

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29 EFJOJUͰߦ͍ͬͯͨॲཧ 7JFX$POUSPMMFSͷ਌ࢠؔ܎ղআ /PUJ fi DBUJPO$FOUFSͷSFNPWF0CTFSWFS

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30 TFMG৮Βͳ͍ͱॲཧͰ͖ͳ͍

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31 😇

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32 ˞࣮͸/PUJ fi DBUJPO$FOUFSʹ͸ରॲͰ͖ͯ·͕͢ɺ ࢠ7JFX$POUSPMMFSͷѻ͍Ͱຊ౰ʹࠔͬͯ·͢ ͍͍ํ๏஌ͬͯΔํ͍ͨΒڭ͍͑ͯͩ͘͞ 5BTLͰอ࣋ͯ͠ɺEFJOJUதͰDBODFM

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33 ͋Γ͕ͱ͏͍͟͝·ͨ͠