らくらくRactor

Fukuoka.rb 200回 LT大会 (#202)
https://fukuokarb.connpass.com/event/206956/

発表後にご指摘を頂き、22ページでMutex.newを行なっていた箇所をサンプルコードにて修正しました。
https://github.com/shioimm/til/blob/57b268151751f7f97bbc08c002d81e74fddd6732/activities/20210324_fukuoka_200/producer_consumer/thread.rb#L39

Transcript

1. ԘҪ
   ඒ࡙!DPF@
   .BS
   
   
   'VLVPLBSC
   ճ
   -5େձ
    Β͘Β͘3BDUPS
2. 'VLVPLBSC
   
   ͓ΊͰͱ͏͍͟͝·͢ʂ
3. ຊ೔ͷൃදʹ͍ͭͯ ɹฒߦฒྻϓϩάϥϛϯάઈࢍษڧதͰ͢ɻ
   ɹٕज़తࢦఠͳͲ͓଴͍ͪͯ͠·͢ɻ 8*1
   
4. ຊ೔ͷൃදʹ͍ͭͯ ɹ
   XBSOJOH
   3BDUPS
   JT
   FYQFSJNFOUBM
   
   ɹ
   BOE
   UIF
   CFIBWJPS
   NBZ
   DIBOHF
   JO
   GVUVSF
   WFSTJPOT
   PG
   3VCZ
   ɹ
   "MTP
   UIFSF
   BSF
   NBOZ
   JNQMFNFOUBUJPO
   JTTVFT
   ɹ3BDUPS͸3VCZͷ࣮ݧతػೳͳͷͰɺ
   ɹࠓޙ࢓༷͕มΘΔ͔΋͠Ε·ͤΜɻ 8*1
   ͱ͍͑͹ʜ
   
5. ࣗݾ঺հ ԘҪ
   ඒ࡙ ͓͍͠
   !DPF@
   
   
   ɹ
   8FCϓϩάϥϚ
   
   
   
   
   ˠ
   ɹ
   'VLVPLBSCੜ·Εɺ"TBLVTBSCҭͪ
   ɹ
   ࠷ۙ3VCZͷ৽ػೳɾ3BDUPS͕ؾʹͳ͍ͬͯ·͢
6. ࣗݾ঺հ ԘҪ
   ඒ࡙ ͓͍͠
   !DPF@
   
   
   ɹ
   8FCϓϩάϥϚ
   
   
   
   
   ˠ
   ɹ
   'VLVPLBSCੜ·Εɺ"TBLVTBSCҭͪ
   ɹ
   ࠷ۙ3VCZͷ৽ػೳɾ3BDUPS͕ؾʹͳ͍ͬͯ·͢ ‐ࠓ೔ͷ͓࿩
7. 3BDUPSʹؔ͢ΔυΩϡϝϯτ
   
   
   
   
   3BDUPS
   
   3VCZT
   "DUPSMJLF
   DPODVSSFOU
   BCTUSBDUJPO
   
   
   
   
   
   
   
   
   IUUQTHJUIVCDPNSVCZSVCZCMPCNBTUFSEPDSBDUPSNE
   
   
   
   
   
   3BDUPS
   3VCZ%PDPSH
   
   
   
   
   
   
   
   
   IUUQTSVCZEPDPSHDPSF3BDUPSIUNM
   
   
   
   
   
   3VCZ
   ͷ3BDUPSΛࣗຫ͍ͨ͠
   ΫοΫύου։ൃऀϒϩά
   ɹ
   
   
   
   
   IUUQTUFDIMJGFDPPLQBEDPNFOUSZ
   
   
   
   
   
   3VCZ
   
   ͷ
   3BDUPS
   ʹ͍ͭͯ ۜ࠲3BJMT
   
   
   
   
   
   
   
   
   IUUQXXXBUEPUOFUdLPBDUJWJUJFT@HJO[BSBJMTQEG
8. 3BDUPSʹؔ͢ΔυΩϡϝϯτ
   
   
   
   
   3BDUPS
   
   3VCZT
   "DUPSMJLF
   DPODVSSFOU
   BCTUSBDUJPO
   
   
   
   
   
   
   
   
   IUUQTHJUIVCDPNSVCZSVCZCMPCNBTUFSEPDSBDUPSNE
   
   
   
   
   
   3BDUPS
   3VCZ%PDPSH
   
   
   
   
   
   
   
   
   IUUQTSVCZEPDPSHDPSF3BDUPSIUNM
   
   
   
   
   
   3VCZ
   ͷ3BDUPSΛࣗຫ͍ͨ͠
   ΫοΫύου։ൃऀϒϩά
   ɹ
   
   
   
   
   IUUQTUFDIMJGFDPPLQBEDPNFOUSZ
   
   
   
   
   
   3VCZ
   
   ͷ
   3BDUPS
   ʹ͍ͭͯ ۜ࠲3BJMT
   
   
   
   
   
   
   
   
   IUUQXXXBUEPUOFUdLPBDUJWJUJFT@HJO[BSBJMTQEG
9. 
   ͨͷ͍͠ฒߦฒྻϓϩάϥϛϯά
   Ҿ༻ɿ3VCZ
   
   ͷ
   3BDUPS
   ʹ͍ͭͯ
   ɹɹɹIUUQXXXBUEPUOFUdLPBDUJWJUJFT@HJO[BSBJMTQEG
10. ैདྷͷ3VCZʹ૊Έࠐ·Ε͍ͯͨ5ISFBEͱൺֱͯ͠
    3BDUPS͕׎͑Δʮͨͷ͠͞ʯͱ͸ͲΜͳ΋ͷʁ
11. ͦΕΛମݧ͢ΔͨΊɺ5ISFBEͱ3BDUPSͰ
    ಉ͡ॲཧΛߦ͏ϓϩάϥϜΛ
    ॻ͖͘Β΂ͯΈ·ͨ͠
12. ͦΕΛମݧ͢ΔͨΊɺ5ISFBEͱ3BDUPSͰ
    1SPEVDFS$POTVNFSύλʔϯΛ
    ॻ͖͘Β΂ͯΈ·ͨ͠ ࠓճͷίʔυ͸ҎԼʹVQ͍ͯ͠·͢
    IUUQTHJUIVCDPNTIJPJNNUJMUSFFNBTUFSBDUJWJUJFT@GVLVPLB@QSPEVDFS@DPOTVNFS
13. ࢀরɿ+BWBݴޠͰֶͿσβΠϯύλʔϯೖ໳ϚϧνεϨουฤɹ݁৓ߒ
    ஶɹୈষ
    1SPEVDFS$POTVNFS σʔλΛૹ৴͢Δ
    εϨου σʔλΛड৴͢Δ
    εϨου σʔλ σʔλΛ
    தܧ఺ʹ౉͢ 1SPEVDFS$POTVNFSύλʔϯ σʔλΛૹ৴͢ΔεϨουͱσʔλΛड৴͢ΔεϨουͷؒʹ
    தܧ఺Λઃ͚Δ͜ͱʹΑΓɺ҆શʹޮ཰Α͘σʔλΛड͚౉͢ தܧ఺ σʔλΛ
    தܧ఺͔ΒऔΔ ͓ޓ͍ͷεϨου͸͓ޓ͍޷͖ͳλΠϛϯάͰಈ࡞͢Δ͜ͱ͕Ͱ͖Δ
14. ࢀরɿ+BWBݴޠͰֶͿσβΠϯύλʔϯೖ໳ϚϧνεϨουฤɹ݁৓ߒ
    ஶɹୈষ
    1SPEVDFS$POTVNFS σʔλ σʔλΛ
    தܧ఺ʹ౉͢ 1SPEVDFS$POTVNFSύλʔϯ σʔλΛૹ৴͢ΔεϨουͱσʔλΛड৴͢ΔεϨουͷؒʹ
    தܧ఺Λઃ͚Δ͜ͱʹΑΓɺ҆શʹޮ཰Α͘σʔλΛड͚౉͢ σʔλΛ
    தܧ఺͔ΒऔΔ ͓ޓ͍ͷεϨου͸͓ޓ͍޷͖ͳλΠϛϯάͰಈ࡞͢Δ͜ͱ͕Ͱ͖Δ 1SPEVDFS $POTVNFS $IBOOFM
15. ࠓճͷϓϩάϥϜͷྲྀΕ 1SPEVDFS $POTVNFS $IBOOFM ൪߸
    σʔλʹ࠾൪͢Δ QSPEVDU
    σʔλΛϓʔϧ͢Δ
    σʔλΛ౉͢
    σʔλΛऔΔ QSPEVDU ࠾൪ػ QSPEVDU QSPEVDU
16. ϓϩάϥϜͷ࣮ߦ݁Ռ ྫ
    ᶃ
    1͕$IBOOFMʹOP
    Λ౉͢
    
    ᶄ
    1͕$IBOOFMʹOP
    Λ౉͢
    
    ᶅ
    $͕$IBOOFM͔ΒOP
    ΛऔΔ
    
    ᶆ
    $͕$IBOOFM͔ΒOP
    ΛऔΔ
    
    ᶇ
    1͕$IBOOFMʹOP
    Λ౉͢
    
    ᶈ
    $͕$IBOOFM͔ΒOP
    ΛऔΔ
    
    
    ᶉ
    1͕$IBOOFMʹOP
    Λ౉͢
    
    
    ᶊ
    1͕$IBOOFMʹOP
    Λ౉͢
    
    ᶋ
    $͕$IBOOFM͔ΒOP
    ΛऔΔ
    
    
    
    
    
    ʜ ͭͷ1SPEVDFSεϨουͱ̏ͭͷ$POTVNFSεϨου͕
    ͦΕͧΕಉ࣌ʹಈ࡞͢Δ৔߹ͷྫ
17. 
    
    5ISFBEΛ࢖࣮ͬͨ૷ ˞
    ͨͩ͠ࠓճ(7-ͷ͜ͱ͸ߟ͑ͳ͍΋ͷͱ͠·͢
18. 5ISFBEΛ࢖͏ϓϩάϥϜͷશମ૾ class Producer # … class Consumer # … class Numbering # … class Channel # … channel = Channel.new(3) producers = 3.times.map { Thread.new { # … } } consumers = 3.times.map { Thread.new { # … } } producers.each(&:join) consumers.each(&:join) $IBOOFMΫϥε ࠾൪ػΫϥε 1SPEVDFSΫϥε $POTVNFSΫϥε ϝΠϯϓϩάϥϜ
19. ϝΠϯϓϩάϥϜͷ࣮૷ channel = Channel.new(3) producers = 3.times.map { |i| Thread.new do Producer.new(“P-#{i + 1}”, channel).run end } consumers = 3.times.map { |i| Thread.new do Consumer.new(“C-#{i + 1}”, channel).run end } producers.each(&:join) consumers.each(&:join)
    QSPEVDUΛͭϓʔϧ͢Δ$IBOOFMΛੜ੒
    ͭͷεϨουͰ
    
    1SPEVDFSΦϒδΣΫτΛ
    
    ੜ੒͠ɺՔಇͤ͞Δ
    ͭͷεϨουͰ
    
    $POTVNFSΦϒδΣΫτΛ
    
    ੜ੒͠ɺՔಇͤ͞Δ
20. ϝΠϯϓϩάϥϜͷ࣮૷ channel = Channel.new(3) producers = 3.times.map { |i| Thread.new do Producer.new(“P-#{i + 1}”, channel).run end } consumers = 3.times.map { |i| Thread.new do Consumer.new(“C-#{i + 1}”, channel).run end } producers.each(&:join) consumers.each(&:join)
    Ҿ਺ͱ֤ͯ͠εϨουͷ໊લͱ
    
    $IBOOFMΛ౉͢
    ֤εϨουͷ࣮ߦΛ଴ͪ߹ΘͤΔ
21. 1SPEVDFSΫϥεͷ࣮૷ class Producer def initialize(name, channel) Thread.current.name = name @channel = channel end def run loop do product_no = Numbering.issue @channel.put "Product no. #{product_no}" end end end
    ࠾൪ػ͔Β
    
    QSPEVDU൪߸Λऔಘ͢Δ
    ࠾൪ͨ͠QSPEVDUΛ$IBOOFMʹஔ͘ # εϨουͷ໊લΛอଘ # ChannelΦϒδΣΫτ
22. ࠾൪ػΫϥεͷ࣮૷ class Numbering @@product_no = 0 def self.issue Mutex.new.synchronize do @@product_no += 1 end end end
    QSPEVDU൪߸ΛΧ΢ϯτΞοϓ͠ɺฦ͢
    .VUFYTZODISPOJ[F
    
    ಉ࣌ʹΞΫηεͰ͖ΔͷΛ
    
    εϨουʹ੍ݶ͢Δ͜ͱͰ
    
    ةݥྖҬΛอޢ͢Δ
    ෳ਺ͷ1SPEVDFSεϨου͔Β
    
    ಉ࣌ʹΞΫηε͞ΕΔͨΊ
    
    ڝ߹͠ͳ͍Α͏ϩοΫΛ͔͚Δ
23. $IBOOFMΫϥεͷ࣮૷ class Channel def initialize(size) @products = [] @size = size @mutex = Mutex.new @cond = ConditionVariable.new end def put(product) # … end def take # … end end
    1SPEVDFSΦϒδΣΫτͷதͰݺ͹ΕΔϝιου
    
    QSPEVDUΛϓʔϧʹೖΕΔͨΊͷ΋ͷ
    $POTVNFSΦϒδΣΫτͷதͰݺ͹ΕΔϝιου
    
    QSPEVDUΛϓʔϧ͔ΒऔΓग़ͨ͢Ίͷ΋ͷ # mutex # ৚݅ม਺ # Channelͷϓʔϧ # Channel͕ಉ࣌ʹϓʔϧͰ͖Δ࠷େ਺
24. $IBOOFMΫϥεͷ࣮૷ QVUϝιου class Channel def initialize(size) # … def put(product) @mutex.synchronize do while @products.size >= @size @cond.wait(@mutex) end # … end end def take # … end
    $POEJUJPO7BSJBCMFXBJU
    
    ৚͕݅ຬͨ͞ΕΔ·Ͱ
    
    NVUFYͷϩοΫΛղআ͠ɺ
    
    ॲཧΛ଴ػͤ͞Δ
    ϓʔϧʹۭ͖͕ͳ͍৔߹ɺ
    
    QSPEVDUΛϓʔϧʹೖΕΔ
    
    ͜ͱ͕Ͱ͖ͳ͍
25. $IBOOFMΫϥεͷ࣮૷ QVUϝιου class Channel def initialize(size) # … def put(product) @mutex.synchronize do while @products.size >= @size @cond.wait(@mutex) end # … end end def take # … end
    ϓʔϧʹۭ͖͕ͳ͍৔߹ɺ
    
    QSPEVDUΛϓʔϧʹೖΕΔ
    
    ͜ͱ͕Ͱ͖ͳ͍
    
    ‎
    ৚݅ม਺Λ࢖ͬͯ
    
    
    
    
    
    ϓʔϧʹۭ͖͕Ͱ͖Δ·Ͱ
    
    
    
    
    
    ͜͜ͰॲཧΛ଴ػ͢Δ
    $POEJUJPO7BSJBCMFXBJU
    
    ৚͕݅ຬͨ͞ΕΔ·Ͱ
    
    NVUFYͷϩοΫΛղআ͠ɺ
    
    ॲཧΛ଴ػͤ͞Δ
26. $IBOOFMΫϥεͷ࣮૷ QVUϝιου class Channel def initialize(size) # … def put(product) @mutex.synchronize do while @products.size >= @size @cond.wait(@mutex) end # … end end def take # … end
    ϓʔϧʹۭ͖͕Ͱ͖Δͷ͸
    
    ͍ͭʁ
27. class Channel def initialize(size) # … def put(product) # … def take @mutex.synchronize do # … product = @products.pop @cond.signal product end end end $IBOOFMΫϥεͷ࣮૷ UBLFϝιου
    $POTVNFSΦϒδΣΫτͷதͰ
    
    UBLFϝιου͕ݺ͹ΕΔ
    
    
    
    ‎
    ϓʔϧ͔ΒQSPEVDU͕औΓग़͞ΕΔ
    
    
    
    ‎
    ϓʔϧʹۭ͖͕Ͱ͖Δ
    
28. $IBOOFMΫϥεͷ࣮૷ UBLFϝιου class Channel def initialize(size) # … def put(product) # … def take @mutex.synchronize do # … product = @products.pop @cond.signal product end end end
    $POEJUJPO7BSJBCMFTJHOBM
    
    ॲཧͷ଴ػΛղআ͠ɺ
    
    ࠶ͼϩοΫΛऔಘͰ͖ΔΑ͏
    
    ৚݅ม਺΁௨஌ΛૹΔ
    ϓʔϧʹۭ͖͕Ͱ͖ͨ͜ͱΛ
    
    ৚݅ม਺΁௨஌͢Δ
29. $IBOOFMΫϥεͷ࣮૷ UBLFϝιου class Channel def initialize(size) # … def put(product) # … def take @mutex.synchronize do # … product = @products.pop @cond.signal product end end end
    $POEJUJPO7BSJBCMFTJHOBM
    
    ॲཧͷ଴ػΛղআ͠ɺ
    
    ࠶ͼϩοΫΛऔಘͰ͖ΔΑ͏
    
    ৚݅ม਺΁௨஌ΛૹΔ
    ϓʔϧʹۭ͖͕Ͱ͖ͨ͜ͱΛ
    
    ৚݅ม਺΁௨஌͢Δ
    ‎
    QVUϝιουͷ଴ػΛղআ͢Δ
30. $IBOOFMΫϥεͷ࣮૷ ࠶ͼQVUϝιου class Channel def initialize(size) # … def put(product) @mutex.synchronize do while @products.size >= @size @cond.wait(@mutex) end @products.push product puts "#{Thread.current.name} produces #{product}." @cond.signal end end def take # … end
    ॲཧΛ࠶։ͨ͠Β
    
    QSPEVDUΛϓʔϧʹೖΕΔ
31. $IBOOFMΫϥεͷ࣮૷ ࠶ͼQVUϝιου class Channel def initialize(size) # … def put(product) @mutex.synchronize do while @products.size >= @size @cond.wait(@mutex) end @products.push product puts "#{Thread.current.name} produces #{product}." @cond.signal end end def take # … end
    QVUϝιουͷதͰ΋
    
    ৚݅ม਺΁ͷ௨஌Λߦͳ͍ͬͯΔ
    
32. $IBOOFMΫϥεͷ࣮૷ ࠶ͼUBLFϝιου class Channel def initialize(size) # … def put(product) # … def take @mutex.synchronize do while @products.size <= 0 @cond.wait(@mutex) end product = @products.pop @cond.signal product end end end
    ˞
    UBLFϝιου͸QVUϝιουΛ
    
    ɹ
    ൓సͤͨ͞Α͏ͳॲཧΛߦͳ͍ͬͯΔ
    ϓʔϧ͕ۭͰ͋Δ৔߹ɺ
    
    ϓʔϧ͔ΒQSPEVDUΛऔΔ
    
    ͜ͱ͕Ͱ͖ͳ͍
    
    ‎
    ৚݅ม਺Λ࢖ͬͯ
    
    
    
    
    
    
    ϓʔϧʹQSPEVDU͕ೖΔ·Ͱ
    
    
    
    
    
    
    ͜͜ͰॲཧΛ଴ػ͢Δ
    ॲཧΛ࠶։ͨ͠Β
    
    QSPEVDUΛϓʔϧ͔ΒऔΓग़͢
33. $POTVNFSΫϥεͷ࣮૷ class Consumer def initialize(name, channel) Thread.current.name = name @channel = channel end def run loop do product = @channel.take puts "#{Thread.current.name} consumes #{product}." end end end # εϨουͷ໊લΛอଘ # ChannelΦϒδΣΫτ
    $IBOOFM͔ΒQSPEVDUΛऔΓग़͢
34. $POTVNFSΫϥεͷ࣮૷ class Consumer def initialize(name, channel) Thread.current.name = name @channel = channel end def run loop do product = @channel.take puts "#{Thread.current.name} consumes #{product}." end end end
    $IBOOFM͔ΒQSPEVDUΛऔΓग़͢ ׬੒ʂ # εϨουͷ໊લΛอଘ # ChannelΦϒδΣΫτ
35. 5ISFBEΛ࢖࣮ͬͨ૷ͷͨͷ͘͠ͳ͍ͱ͜Ζ
    
    ?
    ొ৔ਓ෺͕ଟ͍ εϨουɺNVUFYɺ৚݅ม਺
    
    
    ?
    ϧʔϧ͕ଟ͍
    
    
    
    
    
    
    
    
    ᶃ
    σʔλ΁ͷॻ͖ࠐΈΛߦ͏ͱ͖͸
    
    
    
    
    
    
    ɾ
    
    
    ڝ߹Λ๷͙ͨΊʹNVUFYΛ࢖ͬͯϩοΫΛ͔͚Δ
    
    
    
    
    
    
    
    
    ᶄ
    $IBOOFMͷঢ়ଶʹԠͯ͡৚݅ม਺ͰॲཧΛ଴ػͤ͞Δ
    
    
    
    
    
    
    
    
    ᶅ
    ଴ػͤͨ͞ॲཧΛ࠶։͢Δͱ͖͸৚݅ม਺΁௨஌͢Δ
36. 5ISFBEΛ࢖࣮ͬͨ૷ͷͨͷ͘͠ͳ͍ͱ͜Ζ
    
    ?
    ొ৔ਓ෺͕ଟ͍ εϨουɺNVUFYɺ৚݅ม਺
    
    
    ?
    ϧʔϧ͕ଟ͍
    
    
    
    
    
    
    
    
    ᶃ
    σʔλ΁ͷॻ͖ࠐΈΛߦ͏ͱ͖͸
    
    
    
    
    
    
    ɾ
    
    
    ڝ߹Λ๷͙ͨΊʹNVUFYΛ࢖ͬͯϩοΫΛ͔͚Δ
    
    
    
    
    
    
    
    
    ᶄ
    $IBOOFMͷঢ়ଶʹԠͯ͡৚݅ม਺ͰॲཧΛ଴ػͤ͞Δ
    
    
    
    
    
    
    
    
    ᶅ
    ଴ػͤͨ͞ॲཧΛ࠶։͢Δͱ͖͸৚݅ม਺΁௨஌͢Δ
    ϧʔϧͷద༻࿙Ε͕͋ΔͱࠔΔʜ
    ϧʔϧΛద੾ʹద༻͢Δͷ͕೉͍͠ʜ
37. 
    
    3BDUPSΛ࢖࣮ͬͨ૷
38. 3BDUPSΛ࢖͏ϓϩάϥϜͷશମ૾ class Producer # … class Consumer # … channel = Ractor.new { # … } numbering = Ractor.new { # … } producers = 3.times.map { Ractor.new { # … } } consumers = 3.times.map { Ractor.new { # … } } producers.each(&:take) consumers.each(&:take) 1SPEVDFSΫϥε $POTVNFSΫϥε $IBOOFM
    3BDUPS ϝΠϯϓϩάϥϜ ࠾൪ػ
    3BDUPS
39. ϝΠϯϓϩάϥϜͷ࣮૷ producers = 3.times.map { |i| Ractor.new(channel, numbering, name: "P-#{i + 1}") do |ch, num| Producer.new(ch, num).run end } consumers = 3.times.map { |i| Ractor.new(channel, name: "C-#{i + 1}") do |ch| Consumer.new(ch).run end } producers.each(&:take) consumers.each(&:take)
    ͭͷ3BDUPSͰ
    
    1SPEVDFSΦϒδΣΫτΛ
    
    ੜ੒͠ɺՔಇͤ͞Δ
    ͭͷ3BDUPSͰ
    
    $POTVNFSΦϒδΣΫτΛ
    
    ੜ੒͠ɺՔಇͤ͞Δ
40. ϝΠϯϓϩάϥϜͷ࣮૷ producers = 3.times.map { |i| Ractor.new(channel, numbering, name: "P-#{i + 1}") do |ch, num| Producer.new(ch, num).run end } consumers = 3.times.map { |i| Ractor.new(channel, name: "C-#{i + 1}") do |ch| Consumer.new(ch).run end } producers.each(&:take) consumers.each(&:take)
    ֤3BDUPSͷ࣮ߦΛ଴ͪ߹ΘͤΔ
    Ҿ਺ͱ֤ͯ͠3BDUPSͷ໊લͱ
    
    $IBOOFMͱ࠾൪ػΛ౉͢
    Ҿ਺ͱ֤ͯ͠3BDUPSͷ໊લͱ
    
    $IBOOFMΛ౉͢
41. 1SPEVDFSΫϥεͷ࣮૷ class Producer def initialize(channel, numbering) @channel = channel @numbering = numbering end def run # … end private def issue_product_no # … end end # Channel Ractor # ࠾൪ػ3BDUPS
    QSPEVDU൪߸Λൃߦ͢ΔͨΊͷϝιου
42. class Producer def initialize(channel, numbering) # … def run loop do product_no = issue_product_no # … end end private def issue_product_no @numbering.send Ractor.current # … end end
    3BDUPSTFOE
    ⾩
    SFDFJWF
    
    ର৅ͷ3BDUPSΦϒδΣΫτ΁
    
    ϝοηʔδΛૹΔ
    ࠾൪ػʹ͜ͷ3BDUPSࣗ਎ΛૹΔ 1SPEVDFSΫϥεͷ࣮૷ SVO
    
    JTTVF@QSPEVDU@OPϝιου
43. ϝΠϯϓϩάϥϜͷ࣮૷ ࠾൪ػ3BDUPS numbering = Ractor.new(no = 0) do |no| loop do no += 1 producer = Ractor.receive producer.send no end end
    ड͚औͬͨ1SPEVDFS
    3BDUPSʹQSPEVDU൪߸Λฦૹ͢Δ
    1SPEVDFS
    3BDUPSΛड͚औΔ
    3BDUPSSFDFJWF
    ⾩
    TFOE
    
    ࣗ਎ͷJODPNJOHQPSU͔Β
    
    ϝοηʔδΛड͚ೖΕΔ
    QSPEVDU൪߸ΛΧ΢ϯτΞοϓ͢Δ
44. 1SPEVDFSΫϥεͷ࣮૷ SVO
    
    JTTVF@QSPEVDU@OPϝιου class Producer def initialize(channel, numbering) # … def run loop do product_no = issue_product_no # … end end private def issue_product_no @numbering.send Ractor.current Ractor.receive end end
    ࠾൪ػ͔Βड͚औͬͨQSPEVDU൪߸Λฦ͢
45. class Producer def initialize(channel, numbering) # … def run loop do product_no = issue_product_no @channel.send ["Product no. #{product_no}”, Ractor.current] end end private def issue_product_no @numbering.send Ractor.current Ractor.receive end end
    ࠾൪ͨ͠QSPEVDUͱɺ͜ͷ3BDUPSࣗ਎Λ$IBOOFMʹૹΔ 1SPEVDFSΫϥεͷ࣮૷ SVO
    
    JTTVF@QSPEVDU@OPϝιου
46. ϝΠϯϓϩάϥϜͷ࣮૷ $IBOOFM
    3BDUPS channel = Ractor.new do loop do product, producer = Ractor.receive puts “#{producer.name} produces #{product}." Ractor.yield product end end
    3BDUPSZJFME
    ⾩
    UBLF
    
    ࣗ਎ͷPVUHPJOHQPSU͔Β
    
    ϝοηʔδΛૹΓग़͢
    1SPEVDFS
    3BDUPS͔ΒσʔλΛड͚औͬͯ
    
    ͦͷ··$POTVNFS
    3BDUPS΁ૹΓग़͚ͩ͢ʂ
    QSPEVDUΛૹΓग़͢
    QSPEVDUΛड͚औΔ
47. $POTVNFSΫϥεͷ࣮૷ class Consumer def initialize(channel) @channel = channel end def run loop do product = @channel.take puts "#{Ractor.current.name} consumes #{product}" end end end
    3BDUPSUBLF
    ⾩
    ZJFME
    
    ର৅ͷ3BDUPSΦϒδΣΫτ͔Β
    
    ϝοηʔδΛҾ͖ग़͢ # Channel Ractor
    $IBOOFM͔ΒૹΓग़͞ΕͨQSPEVDUΛड͚औΔ
48. $POTVNFSΫϥεͷ࣮૷ class Consumer def initialize(channel) @channel = channel end def run loop do product = @channel.take puts "#{Ractor.current.name} consumes #{product}" end end end
    3BDUPSUBLF
    ⾩
    ZJFME
    
    ର৅ͷ3BDUPSΦϒδΣΫτ͔Β
    
    ϝοηʔδΛҾ͖ग़͢ ׬੒ʂ # Channel Ractor
    $IBOOFM͔ΒૹΓग़͞ΕͨQSPEVDUΛड͚औΔ
49. 3BDUPSΛ࢖࣮ͬͨ૷ͷͨͷ͍͠ͱ͜Ζ
    
    ✔
    ొ৔ਓ෺͸3BDUPS͚ͩͳͷͰΒ͘Β࣮͘૷Ͱ͖Δ
    
    
    ✔
    ϧʔϧ͕γϯϓϧͳͷͰΒ͘Β࣮͘૷Ͱ͖Δ
    
    
    
    
    
    
    
    ʮ3BDUPS͸3BDUPS͔ΒϝοηʔδΛͻͱͭड͚औΔ
    
    
    
    
    
    
    
    ʮ3BDUPS͸3BDUPS΁ϝοηʔδΛͻͱͭૹΔʯ
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    ڝ߹͕ൃੜ͠ͳ͍
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    $IBOOFM͕ঢ়ଶΛ࣋ͨͳ͍
    
    
    ✔
    3BDUPSಉ࢜Λ૊Έ߹Θͤͯ
    
    
    
    
    
    ϓϩάϥϜΛߟ͑Δͷ͕ͨͷ͍͠ʂ ‎
50. 3BDUPSΛ࢖࣮ͬͨ૷ͷͨͷ͍͠ͱ͜Ζ
    
    ✔
    ొ৔ਓ෺͸3BDUPS͚ͩͳͷͰΒ͘Β࣮͘૷Ͱ͖Δ
    
    
    ✔
    ϧʔϧ͕γϯϓϧͳͷͰΒ͘Β࣮͘૷Ͱ͖Δ
    
    
    
    
    
    
    
    ʮ3BDUPS͸3BDUPS͔ΒϝοηʔδΛͻͱͭड͚औΔ
    
    
    
    
    
    
    
    ʮ3BDUPS͸3BDUPS΁ϝοηʔδΛͻͱͭૹΔʯ
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    ڝ߹͕ൃੜ͠ͳ͍
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    $IBOOFM͕ঢ়ଶΛ࣋ͨͳ͍
    
    
    ✔
    3BDUPSಉ࢜Λ૊Έ߹Θͤͯ
    
    
    
    
    
    ϓϩάϥϜΛߟ͑Δͷ͕ͨͷ͍͠ʂ ॏཁ ‎
51. ͓ർΕ༷Ͱͨ͠
52. ༨ஊ ࡢ೥य़ɺ3VCZ͞Έͬͱʹͯ
53. ༨ஊ ࡢ೥य़ɺ3VCZ͞Έͬͱʹͯ
54. ෬ઢճऩEPOF Ұ೥ӽ͠Ͱ ༨ஊ ࡢ೥य़ɺ3VCZ͞Έͬͱʹͯ
55. ·ͱΊ 3BDUPSͰ
    ฒߦฒྻϓϩάϥϛϯάΛ
    Β͘Βͨ͘ͷ͠ΜͰ͍͖·͠ΐ͏ʂ
56. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠