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8FCΞϓϦέʔγϣϯʹ ͓͚Δฒߦॲཧͷ೉͠͞ (P$POGFSFODF`JO"VUVNO4&/%"* /BPLJ,JTIJ !QBTT

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ͯ͞ɺօ͞Μ

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ฒߦॲཧ΍ͬͯ·͔͢ʁ !

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ฒߦॲཧਏ͍Ͱ͔͢ʁ "

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๻͸ਏ͔ͬͨͰ͢

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ࠓ೔͸ͦͷਏ͞ʹͲ͏ରॲ͔ͨ͠ ʹ͍ͭͯ঺հ͠·͢

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ࠓ೔ͷτʔΫ ˔ ಺༰ ฒߦॲཧͰϋϚͬͨ໰୊ʹͲ͏Ξϓϩʔν͍͔ͯͬͨ͠ ˓ 8FCΞϓϦέʔγϣϯ "1* Λ୊ࡐʹ ˓ ίʔυͷ࿩ΑΓɺઃܭ΍ߟ͑ํͷ࿩͕ϝΠϯ ˔ Ϩϕϧײ #FHJOOFSd*OUFSNFEJBUFΛ૝ఆ ˓ (Pͷجຊจ๏͸લఏ஌ࣝͱ͠·͢ ˓ HPSPVUJOF΍DIBOOFMͷجຊతͳ࢖͍ํ΋લఏ஌ࣝͱ͠·͢

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ࣗݾ঺հ /BPLJ,JTIJ ˔ (Pྺ೥ ˔ (P$POGFSFODFྺճ ௌߨ ˔ ژ౎େֶ ޻ֶ෦ ˔ $".1)03୅ද !QBTT

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"HFOEB ฒߦॲཧͷԿ͕ਏ͍ʁ ୊ࡐͱͳΔฒߦॲཧΛ࢖ͬͨ8FCΞϓϦέʔγϣϯ ϋϚͬͨͱ͜Ζ ·ͱΊ

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ฒߦॲཧͷԿ͕ਏ͍ʁ

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શମ೺Ѳͷ೉͠͞ ˔ ඞͣ͠΋ιʔείʔυͷ্͔Βॱʹ࣮ߦ͞Εͳ͍ ˔ ͋Δ࣌఺ͰͲͷHPSPVUJOF͕ىಈ͍ͯ͠Δ͔೺Ѳͮ͠Β͍ ˔ ෳ਺ͷHPSPVUJOFΛಉ࣌ʹ೺Ѳ͢Δඞཁ͕͋Γೝ஌ෛՙߴ ༁Θ͔ΒΜ

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HPSPVUJOFηʔϑͷ୲อ ˔ ෳ਺ͷHPSPVUJOF͔Βม਺Λಉ࣌ʹಡΈॻ͖ͯ͠΋໰୊ͳ͍ঢ়ଶ ˓ ଞͷݴޠͰ͸ʮεϨουηʔϑʯͱ΋ݴ͏ ˔ DIBOOFM΍TZOD.VUFYΛ࢖ͬͯHPSPVUJOFηʔϑʹ͠Α͏ͱࢼΈΔ ˓ ࡉ͔͍ม਺Ͱରࡦ࿙Ε͕ͪ͠ ͍ͭͷؒʹ͔஋͕ ॻ͖׵ΘͬͯΔ

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DIBOOFMͷϒϩοΩϯά ˔ DIBOOFMʹ༰ྔҎ্ͷ஋Λૹ৴͠Α͏ͱ͢ΔͱϒϩοΫ͞ΕΔ ˔ DIBOOFM͕ҲΕΔͱҙਤͤͣϒϩοΩϯά͕ൃੜ͢ΔՄೳੑ ˓ ϦΫΤετ਺͕গͳ͍ͱݦࡏԽ͠ʹ͍͘ ٸʹΞϓϦέʔγϣϯࢭ ·ͬͨΜ͚ͩͲ

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͜Εશ෦ϋϚΓ·ͨ͠

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Ͳ͏ཱͪ޲͔͔ͬͨʁ

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ͦͷલʹ

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୊ࡐͱͳΔฒߦॲཧΛ ࢖ͬͨΞϓϦέʔγϣϯ

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৽͍͠Իָͱग़ձ͏ָ͠͞Λ͋ͳͨʹ

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3FMBZN ϦϞʔτϫʔΫதͷ࡞ۀ༻#(.Λ 4/4Ͱืू ༑ୡͱͷυϥΠϒதʹྲྀ͢ۂΛ ֤ʑͷεϚϗ͔Βࣗ༝ʹ௥Ճ օ͕ௌָ͖͍ͨۂΛͭͷεϐʔΧʔͰָ͠ΊΔ8FCΞϓϦ

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3FMBZNͷಛ௃ օ͕ௌָ͖͍ͨۂΛͭͷεϐʔΧʔͰָ͠ΊΔ8FCΞϓϦ

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3FMBZNͷ։ൃ ˔ ֶੜͷʮझຯ։ൃʯ ˔ 044Ͱ։ൃ ˓ IUUQTHJUIVCDPNDBNQIPSSFMBZNTFSWFS ˓ IUUQTHJUIVCDPNDBNQIPSSFMBZNDMJFOU ˔ ࢖༻ٕज़(P 7VF

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3FMBZNʹ͓͚Δʮηογϣϯʯ ˔ ͭͷ࠶ੜΛද͢୯Ґ ˓ /ਓͷϢʔβʢࢀՃऀʣ͕ηογϣϯʹࢀՃͰ͖Δ ˓ .ۂָۂΛ௥ՃͰ͖Δ ͜Ε͕ηογϣϯ ˞ηογϣϯʹΧϥΦέϧʔϜͱߟ͑Δͱཧղ͠΍͍͔͢΋

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ฒߦॲཧΛ࢖͍ͬͯΔՕॴ

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ࢀՃऀಉ࢜ͷϦΞϧλΠϜಉظ ˔ ۂͷ௥Ճɺ࠶ੜ։࢝౳ͷΠϕϯτΛશͯͷ୺຤ʹ൓ө͍ͤͨ͞ ˔ 8FC4PDLFUΛ࢖࣮ͬͯݱ ˓ 4FSWFSˠ$MJFOU

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ηογϣϯͷ࠶ੜঢ়گͷ؅ཧ ˔ ࠶ੜঢ়گͷมԽΛ؂ࢹ ˔ ηογϣϯʹHPSPVUJOF ˔ Πϕϯτ͸8FC4PDLFUͰ഑৴

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ۂͷ࠶ੜ͕ऴྃͨ͠λΠϛϯάͰ%#ͷߋ৽΍Πϕϯτͷ഑৴Λ͍ͨ͠ ͳͥηογϣϯ؅ཧHPSPVUJOF͕ඞཁͳͷ͔ʁ ΞϓϦέʔγϣϯଆͰλΠϚʔΛ࣋ͬͯ࠶ੜऴྃΛݕ஌͢Δ͜ͱʹ ˔ 4QPUJGZ8FC"1*ʹ͸8FCIPPL͕ͳ͍ ˔ ʮ͍ͭۂͷ࠶ੜ͕ऴ͔ྃͨ͠ʯΛ஌Δ͢΂͕ͳ͍

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ϋϚͬͨͱ͜Ζ

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࿈ଧ͢Δͱฦͬͯ͜ͳ͘ͳΔ"1*

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࿈ଧ͢Δͱฦͬͯ͜ͳ͘ͳΔ"1* ˔ ָۂͷεΩοϓૢ࡞Λߦ͏ΤϯυϙΠϯτ ˓ ୟ͘ͱ࣍ͷۂʹભҠ͢Δ ˔ NT͓͖ʹλοϓͨ͠Β໰୊ͳ͘ಈ࡞ ˔ ௒଎࿈ଧͨ͠ΒϨεϙϯε͕ฦͬͯ͜ͳ͘ͳΔ

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εΩοϓ"1*ͷ࣮૷Λ෼ੳ εΩοϓ"1*͸ඇಉظͰηογϣϯͷ࠶ੜঢ়گΛߋ৽ ηογϣϯऴྃঢ়ଶͳΒ#BE3FRVFTUͯ͠SFUVSO 4QPUJGZ8FC"1*Λୟ͍ͯۂΛεΩοϓ TLJQ$Iͱ͍͏DIBOOFMΛ௨ͯ͡ɺηογϣϯ؅ཧHPSPVUJOFʹ "1*͕ݺ͹Εͨ͜ͱΛૹ৴ B λΠϚʔͷ࣌ؒΛϦηοτ͢Δඞཁ͕͋Δ "DDFQUFE )BOEMFSHPSPVUJOF͸ऴྃ

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DIBOOFMͷૹ৴͕ոͦ͠͏

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HPSPVUJOFͷϥΠϑαΠΫϧΛ ҙࣝͯ͠ DIBOOFMͷ௨৴Λௐࠪ͢Δ

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HPSPVUJOFͷϥΠϑαΠΫϧΛҙࣝ͢Δ ˔ HPSPVUJOF͕ʮ͍ͭ։࢝͞ΕΔ͔ʯʮ͍ͭऴྃ͢Δ͔ʯΛߟ͑Δ ˔ DIBOOFMͷૹ৴࣌ʹHPSPVUJOF͕ੜ͖͍ͯΔ͔Ͳ͏͔Λߟ͑Δ ϥΠϑαΠΫϧΛҙࣝ͢ΔͱDIBOOFMͷόάΛൃݟ͠΍͍͢

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؆୯ͳྫ ˔ HPSPVUJOF#͸͍ͭૹ৴ͯ͠΋ྑ͍ ˔ HPSPVUJOF"͸ૹ৴Ͱ͖ͳ͍৔߹͕͋Δ "ˠ#ʹૹ͍ͬͯΔίʔυ͕ ͋Ε͹όάͷةݥ

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࣮ࡍʹߟ͑ͯΈΔ

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TLJQ$Iͷड͚औΓଆͰߦ͍ͬͯͨॲཧ ड͚औΓଆ͸ηογϣϯ؅ཧHPSPVUJOF ˔ ࣍ʹ࠶ੜ͢Δۂ͕ଘࡏ͢Δ৔߹ ࣍ͷۂΛ4QPUJGZͷΩϡʔʹ௥Ճ ˔ શͯͷۂͷ࠶ੜ͕ऴΘͬͨ৔߹ ηογϣϯΛऴྃঢ়ଶʹભҠɺ%#Λߋ৽ શͯͷ୺຤ʹηογϣϯऴྃΠϕϯτΛૹ৴ HPSPVUJOFΛऴྃ ˡո͍͠

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˔ ͷεΩοϓͰηογϣϯ͕ऴྃ ˔ ʙ/ͷεΩοϓॲཧ͸DIBOOFM͕ ͦͷ͏ͪҲΕ్ͯத͔ΒϒϩοΫ Կ͕ى͍͔ͬͯͨ͜ )BOEMFS͕ϒϩοΫ͞Ε Ϩεϙϯε͕ฦΒͳ͍ࣄଶʹ

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ҰԠରࡦΛ͍ͯͨ͠ ˔ ࠶ੜঢ়ଶΛνΣοΫ͠ɺऴྃঢ়ଶͳΒ#BE3FRVFTUͰSFUVSO ˔ τϥϯβΫγϣϯͷϩοΫ͕͖ͪΜͱ͔͔͍ͬͯͳ͔ͬͨ ˓ εΩοϓͷঢ়ଶมߋ͕൓ө͞ΕΔલͷ࠶ੜঢ়ଶΛऔಘ͍ͯͨ͠ ˓ ߴස౓ͰϦΫΤετ͕དྷͳ͍ͱ࠶ݱ͠ͳ͍

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࢑ఆతͳରԠ DIBOOFMͷઃܭΛม͑Δʹ͸͕͔͔࣌ؒΔͱ൑அɺ࢑ఆతͳରԠΛߦ͏ ˔ ద੾ͳϩοΫΛऔΔ ˔ εΩοϓ"1*ͷϦΫΤετഁغ ˓ 4QPUJGZ8FC"1*ͷϨεϙϯε͕஗͍ͷͰͦ΋ͦ΋࿈ଧ͞Εͨ͘ͳ͍ ˓ ࿈ଧ͞ΕͨΒ͍͔ͭ͘ͷϦΫΤετ͸ഁغͯ͠͠·͏

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εΩοϓ"1*ͷϦΫΤετഁغ DIBOOFMͷDBQҎ্ͷϦΫΤετ͸ഁغ͢Δ func sendToSkipCh() { if len(skipCh) < cap(skipCh) { skipCh <- struct{}{} } }

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˔ DIBOOFMपΓͷόά͕͔͋ͬͨΒͱ͍ͬͯɺDIBOOFMΛۦ࢖ͯ͠όά ͷରࡦΛ͠ͳ͍͍ͯ͘ ˔ ΋ͬͱखલͷஈ֊Ͱॲཧ͢Ε͹ɺ؆୯ʹରॲͰ͖Δ͜ͱ΋ଟ͍ ͨͩ͠ɺٕज़తʹഊ๺ײ ฒߦॲཧͷόάΛฒߦॲཧҎ֎ͷͱ͜ΖͰରࡦ

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શମઃܭϨϕϧͰ ࠜຊతͳରࡦΛߟ͑ͯΈΔ

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DIBOOFMͷॴ༗ݖΛߟ͑Δ ˔ ߟ͑ํͷ࿩ ʮ(PݴޠʹΑΔฒߦॲཧʯʹͯղઆ ˔ DIBOOFMΛੜ੒ͨ͠HPSPVUJOFͷΈ͕DIBOOFM΁ૹ৴Մೳ ˔ ͦͷଞͷHPSPVUJOF͸ಡΈࠐΈͷΈՄೳ ˔ DIBOOFMͷDMPTF౳ͷϋϯυϦϯά͕͠΍͍͢ func SkipCh() <-chan struct{} { return skipCh } ϥΠϑαΠΫϧͷ୹͍ํ͕DIBOOFMͷॴ༗ݖΛ࣋ͯ͹ ૹ৴͕ϒϩοΫ͞ΕͣʹࡁΉ

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εΩοϓ"1*ʹ͓͚ΔTLJQ$Iͷॴ༗ݖ ˔ /ݸͷ)BOEMFSHPSPVUJOF͔Β DIBOOFM΁ૹ৴͕ඞཁ ˔ ੜ੒ଆͰॴ༗ݖΛ࣋ͯͯͳ͍ঢ়گ ૹ৴ଆͷHPSPVUJOFͰDIBOOFMΛੜ੒ͯ͠΋ɺηογϣϯ؅ཧHPSPVUJOFʹ౉ͤͳ͍

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˔ ͜͜Ͱ͸$PNNBOEFSͱ໋໊ ˔ $PNNBOEFS͕ηογϣϯ؅ཧHPSPVUJOFͷॴ༗ݖΛ࣋ͭ ˔ ηογϣϯૢ࡞͸$PNNBOEFSHPSPVUJOFΛܦ༝͢Δ ͣͬͱىಈ͍ͯ͠Δ਌HPSPVUJOFΛ༻ҙ

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˔ $PNNBOEFS͸)BOEMFSΑΓ௕ੜ͖ͳͷͰϒϩοΫ͞ΕΔ͜ͱ͸ͳ͍ ˔ )BOEMFSଆͷॲཧ͕؆୯ʹ ͜ͷํ๏ͷϝϦοτ

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σϝϦοτ ˔ ࢖༻͢ΔHPSPVUJOF͕૿͑Δ෼ɺશମ૾͕೺Ѳͮ͠Β͍ ˓ ࠷ॳʹڍ͛ͨʮશମ೺Ѳͷ೉͠͞ʯ

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ฒߦॲཧϞϦϞϦͰؤுΔ͔Ͳ͏͔͸νʔϜ࣍ୈ ˔ ؤுΔͳΒ ˓ શମ૾͕೺Ѳ͠ʹ͍͘෼ɺυΩϡϝϯτ౳ͷ੔උ͸ͱͯ΋ॏཁ ˓ ͖Ε͍ͳίʔυͰ͋Ε͹υΩϡϝϯτ͸ෆཁ͸͋·Γ௨͡ͳ͍ʢओ؍ʣ ˔ ͜ΕΒʹ౤ࢿ͕Ͱ͖ͳ͍ͳΒͰ͖Δ͚ͩฒߦॲཧΛආ͚Δͷ΋ख ˓ εΩοϓ"1*ͷ࢑ఆରԠͷΑ͏ʹ΍͍ͬͯ͘ ˓ ͦΕ͚ͩͰे෼ͳέʔε΋ଟ͍ ˓ ຊ౰ʹඞཁͳͱ͜ΖͰϐϯϙΠϯτͰ࢖͍ͬͯ͘

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·ͱΊ

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·ͱΊ ˔ 3FMBZNͷ"1*αʔόͷ࣮૷தʹฒߦॲཧؔ࿈ͰϋϚͬͨࣄྫΛ঺հ ˓ ࿈ଧ͢Δͱฦͬͯ͜ͳ͘ͳΔ"1* ˔ HPSPVUJOFͷϥΠϑαΠΫϧ΍ॴ༗ݖΛҙࣝͯ͠ઃܭ͢Δͱྑͦ͞͏ ˔ ฒߦॲཧͰϞϦϞϦͰؤுΔ͔Ͳ͏͔͸νʔϜ࣍ୈ ˓ ؤுΔ৔߹͸͖ͪΜͱ౤ࢿ͍ͯ͘͜͠ͱ͕େࣄ ਏ͞Λ৐Γӽ͑ͯΑΓྑ͍ฒߦॲཧϥΠϑΛʂ

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ࢀߟϦϯΫ ˔ 3FMBZN ˓ IUUQTSFMBZNDBNQIOFU ˔ $PODVSSFODZJTOPUQBSBMMFMJTN 5IF(P#MPH ˓ IUUQTCMPHHPMBOHPSHXB[BUBML ˔ (PݴޠʹΑΔฒߦॲཧ c,BUIFSJOF$PY#VEBZ ࢁޱ ೳ᫫