ABI安定化について

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2017/07/15 ABI҆ఆԽʹ͍ͭͯ SWWDC × AKIBA.swift in Sendai

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About Me

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• ాத ޹໌ (Takaaki Tanaka) • Ϋϥεϝιουגࣜձࣾ • @kongmingtrap • Swift / Objective-C / Scala / JavaScript … • GyazSquare / GitHub

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Swift ϓϩάϥϚʹ͸ ຖ೥߃ྫͷΞϨͷ࣌ظ͕΍ͬͯ͘Δ

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ʊਓਓਓਓਓਓਓਓਓʊ ʼɹ$POWFSU'BJMFEɹʻ ʉ:?:?:?:?:?:?:?:?:?ʉ

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IUUQTUXJUUFSDPNLUBOBLBTUBUVT

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SwiftͷABI͸ ະͩʹ҆ఆԽ͍ͯ͠ͳ͍

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LLVMͷ఩ֶ ΋͏ͻͱͭɺLLVM Λܰྔͳ··ʹอͪଓ͚ ͍ͯΔେ͖ͳಛ௃͕͋Δ (ϥΠϒϥϦΛ࢖͏ ΫϥΠΞϯτଆ͔ΒݟΔͱࢍ൱྆࿦͕͋Δ)ɻ ͦΕ͸ɺաڈͷܾஅ΋ੵۃతʹݟ௚ͯ͠ɺա ڈ ͱͷޓ׵ੑΛؾʹͤͣʹ API Λେ͖͘ม ߋ͍ͯ͘͠ͱ͍͏͜ͱͩɻ 5IF"SDIJUFDUVSFPG0QFO4PVSDF"QQMJDBUJPOT೔ຊޠ༁

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ͭΒ͍

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Application Binary Interface

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Application Binary Interface • ΦϒδΣΫτίʔυϨϕϧͷΠϯλʔϑΣʔ ε • ޓ׵ABIΛαϙʔτ͢ΔγεςϜؒͰɺಉ ࣮͡ߦϑΝΠϧΛมߋແ͠Ͱಈ࡞ͤ͞Δ

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Swift ͷ ABI҆ఆԽ

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4XJGU"#*4UBCJMJUZ.BOJGFTUPΛಡΉ

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Swift ͷ ABI҆ఆԽ Swift ABI Stability Manifesto 4XJGU"#*4UBCJMJUZ.BOJGFTUP

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جຊํ਑ • ΑΓ৽͍͠ίϯύΠϥ͕ݹ͍όʔδϣϯͷSwiftͰ ॻ͔ΕͨίʔυΛίϯύΠϧͰ͖Δ͜ͱ • ৽͍͠SwiftόʔδϣϯʹҠߦ͢ΔࡍʹSwift։ൃ ऀ͕௚໘͢ΔҠߦͷ௧ΈΛܰݮ͢Δ • ιʔεͷޓ׵ੑʹΑΓɺύοέʔδ࡞੒ऀ͸ɺ ෳ਺ͷSwiftόʔδϣϯʹΘͨͬͯ୯Ұͷίʔυ ϕʔεΛҡ࣋͠ͳ͕ΒɺϢʔβʔ͸৽͍͠όʔ δϣϯͷSwiftΛ࢖༻Ͱ͖ΔΑ͏ʹͳΔ

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جຊํ਑ • όΠφϦϑϨʔϜϫʔΫͱϥϯλΠϜͷޓ׵ੑ ʹΑΓɺෳ਺ͷSwiftόʔδϣϯͰಈ࡞͢ΔόΠ φϦܗࣜͷϑϨʔϜϫʔΫΛ഑෍͢Δ • όΠφϦϑϨʔϜϫʔΫʹ͸ɺϑϨʔϜϫʔ ΫͷAPIͷιʔεϨϕϧͷ৘ใΛ఻ୡ͢Δ SwiftϞδϡʔϧϑΝΠϧͱɺ࣮ߦ࣌ʹϩʔυ ͞ΕΔίϯύΠϧࡁΈͷ࣮૷Λఏڙ͢Δڞ༗ ϥΠϒϥϦͷ྆ํؚ͕·ΕΔ

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جຊํ਑ • ABI҆ఆޙͷ҆ఆੑʹ͓͍ͯɺΑΓੵۃతͳϨΠΞ΢τ վળ͕ൃ໌͞ΕΔՄೳੑ͕͋Γ·͢ɻͨͱ͑͹ɺ֎෦ λΠϓͷσʔλϝϯόʔΛ࢖༻ͯ͠ωετ͞ΕͨλΠϓ ͷσʔλϝϯόʔΛฒ΂ସ͑ͨΓɺύοΩϯάͨ͠Γ ͢Δ͜ͱ͕Ͱ͖·͢ɻͦͷΑ͏ͳվળ͸ɺల։λʔήο τ͓Αͼ/·ͨ͸࠷খόʔδϣϯνΣοΫΛհͯ͠ABI- additiveͳ΍ΓํͰߦΘΕͳ͚Ε͹ͳΒͳ͍ɻ͜Ε͸ɺ ϞδϡʔϧϑΝΠϧ͕λΠϓ͝ͱͷABIόʔδϣϯ৘ใ ΛτϥοΩϯά͢Δඞཁ͕͋Δ͜ͱΛҙຯ͠·͢ɻ

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IUUQTTQFBLFSEFDLDPNVTSOBNFVTXJGUBCJTUBCJMJUZ NBOJGFTUPXPEVNV

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Library Evolution • ͢΂ͯͷϢʔβʔ͕ͦͷϥΠϒϥϦͷ৽͍͠ όʔδϣϯΛ࢖༻ͯ͠࠶ίϯύΠϧ͢Δඞཁ ͕ͳ͘ɺϥΠϒϥϦ΍ίϯϙʔωϯτ͕࣌ ؒͷܦաͱͱ΋ʹมߋ͞Εʹ͘͘ͳΓ·͢ɻ • ϥΠϒϥϦͷ࡞੒ऀʹόΠφϦޓ׵ੑΛҡ ࣋͢ΔॊೈੑΛ༩͑Δ͜ͱΛ໨తͱͨ͠ͷ ͕Library Evolutionͷࢦ਑Ͱ͢ɻ

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Library Evolution • ABIͷ҆ఆੑͷ໨తͷ1ͭ͸ɺઃܭεϖʔε Λ੍ݶ͢Δ͜ͱͳ͘ɺϥΠϒϥϦͷਐԽͷ มԽʹରԠͰ͖ΔॊೈੑΛҡ࣋͢Δ͜ͱͰ ͢ɻϥΠϒϥϦͷόʔδϣϯΞοϓͷݒ೦ ࣄ߲͸ݸʑͷηΫγϣϯͰऔΓ্͛ΒΕ· ͕͢ɺৄࡉ͸ະఆͰ͢ɻ

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Library Evolution IUUQTHJUIVCDPNBQQMFTXJGUCMPCNBTUFSEPDT -JCSBSZ&WPMVUJPOSTU

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҉ӢཱͪࠐΊΔࣄଶ

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ѱԽ͢Δঢ়گ

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Swift͸΋͏μϝͳͷ͔…

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…͍΍ɺఘΊΔͷ͸·ͩૣ͍…!

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…ͦ͏ͩʂ௚઀ฉ͜͏

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ձࣾͷۚͰߦ͖ͬͯͨ 88%$ͰΫϦε͞Μʹ ձ͏ػձ͕͋ͬͨ

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Swift Evolution • ΞϊςʔγϣϯͰSwiftͷόʔδϣϯΛࢦఆ ͢Δ͜ͱͰɺϞδϡʔϧ୯ҐͰͷSwift 3.0ɺ Swift 4.0ͷࠞࡏ͸Մೳͱͳͬͨ

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Recap • Swift 4.0Ͱ΋ABI҆ఆԽ͸ݟૹΒΕͨ • Ϟδϡʔϧ୯ҐͰSwift 3.0ɺSwift 4.0ͷࢦఆ ͕Ͱ͖ΔͨΊɺࠞࡏ͸Մೳʹͳͬͨ • ABI҆ఆԽ೗ԿͰࠓޙͷൃలʹେ͖ͳӨڹ Λ༩͑Δ

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