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Concorrência, paralelismo e o Ruby

Ricardo Valeriano
March 09, 2013
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Concorrência, paralelismo e o Ruby

GuruSP 09/03/

Ricardo Valeriano

March 09, 2013
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Transcript

  1. Concorrência, paralelismo e o Ruby Ricardo Valeriano github.com/ricardovaleriano @sr_valeriano backslashes.net

  2. None
  3. None

  4. http://www.webforce.com.br/pt/imprensa.php “Forbes Brasil, out 2000”

  5. Start On Rails [sp edition] ruby inside br

  6. None
  7. None

  8. O que e como concorrência...

  9. None
  10. None
  11. None

  12. Rota, params, controler#action...

  13. Rota, params, controler#action...

  14. Rota, params, controler#action...

  15. Rota, params, controler#action...

  16. Rota, params, controler#action... Rota, params, controler#action...

  17. CPU? Rota, params, controler#action... Rota, params, controler#action...

  18. CPU? Rota, params, controler#action... Rota, params, controler#action...

  19. CPU? Rota, params, controler#action... Rota, params, controler#action...

  20. CPU? Rota, params, controler#action... Rota, params, controler#action...

  21. CPU? Rota, params, controler#action... Rota, params, controler#action...

  22. CPU? Rota, params, controler#action... Rota, params, controler#action...

  23. CPU? Rota, params, controler#action... Rota, params, controler#action...

  24. CPU? Rota, params, controler#action... Rota, params, controler#action...

  25. CPU? Rota, params, controler#action... Rota, params, controler#action...

  26. CPU? Rota, params, controler#action... Rota, params, controler#action...

  27. CPU? Rota, params, controler#action... Rota, params, controler#action...

  28. CPU? Rota, params, controler#action... Rota, params, controler#action...

  29. CPU? Rota, params, controler#action... Rota, params, controler#action...

  30. CPU? Rota, params, controler#action... Rota, params, controler#action...

  31. CPU? Rota, params, controler#action... render... Rota, params, controler#action...

  32. CPU? Rota, params, controler#action... render... Rota, params, controler#action...

  33. CPU? Rota, params, controler#action... render... Rota, params, controler#action...

  34. CPU? Rota, params, controler#action... render... Rota, params, controler#action...

  35. CPU? Rota, params, controler#action... render... Rota, params, controler#action...

  36. CPU? Rota, params, controler#action... render... Rota, params, controler#action...

  37. CPU? Rota, params, controler#action... render... Rota, params, controler#action...

  38. CPU? Rota, params, controler#action... render... Rota, params, controler#action...

  39. CPU? Rota, params, controler#action... render... Rota, params, controler#action...

  40. CPU? Rota, params, controler#action... render... Rota, params, controler#action... render...

  41. CPU? Rota, params, controler#action... render... Rota, params, controler#action... render...

  42. Ruby Threads

  43. Ruby Threads (on MRI)

  44. None
  45. None
  46. None

  47. IO?

  48. IO?

  49. IO?

  50. IO?

  51. IO?

  52. IO?

  53. IO? IO?

  54. IO? IO?

  55. IO? IO?

  56. IO? IO?

  57. IO? IO?

  58. IO? IO?

  59. IO? IO? CPU?

  60. IO? IO? CPU?

  61. IO? IO? CPU?

  62. IO? IO? CPU?

  63. IO? IO? CPU?

  64. IO? IO? CPU?

  65. IO? IO? CPU?

  66. IO? IO? CPU?

  67. IO? IO? CPU?

  68. #join IO? IO? CPU?

  69. #join IO? IO? CPU?

  70. #join IO? IO? CPU?

  71. #join IO? IO? CPU?

  72. #join IO? IO? CPU?

  73. #join IO? IO? CPU?

  74. #join IO? IO? CPU?

  75. None

  76. Fibur = Thread bur / lib / bur.rb

  77. Race conditions

  78. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end

  79. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end

  80. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new

  81. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new (1..100).map do Thread.new{ } end

  82. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new (1..100).map do Thread.new{ } end 100.times { omg.pluzz(1) }

  83. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new (1..100).map do Thread.new{ } end 100.times { omg.pluzz(1) } .each(&:join)

  84. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new

  85. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new

  86. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new omg.pluzz 1

  87. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter omg.pluzz 1

  88. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 omg.pluzz 1

  89. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 omg.pluzz 1

  90. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 omg.pluzz 1

  91. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1

  92. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1

  93. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2

  94. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2

  95. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2

  96. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2

  97. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2 @counter 2

  98. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2 @counter 2

  99. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2 @counter 2

  100. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2 @counter 2

  101. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2 @counter 2 @counter 2 2 + 1 @counter= 3

  102. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2 @counter 2 @counter 2 2 + 1 @counter= 3

  103. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2 @counter 2 @counter 2 2 + 1 @counter= 3

  104. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2 @counter 2 2 + 1 @counter 2 2 + 1 @counter= 3

  105. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2 @counter 2 2 + 1 @counter= 3 @counter 2 2 + 1 @counter= 3

  106. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end omg = SomatorOMG.new @counter 0 0 + 1 @counter=1 @counter 1 1 + 1 @counter= 2 @counter 2 2 + 1 @counter= 3 @counter 2 2 + 1 @counter= 3

  107. Locks

  108. Locks #FTW?

  109. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end require 'monitor'

  110. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end require 'monitor' include MonitorMixin

  111. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end require 'monitor' include MonitorMixin super

  112. class SomatorOMG attr_accessor :counter def initialize @counter = 0 end

    def pluzz(how_much) @counter = @counter + how_much end end require 'monitor' include MonitorMixin synchronize do end super

  113. Dead Lock

  114. Dead Lock

  115. Dead Lock

  116. Dead Lock

  117. Dead Lock

  118. Dead Lock

  119. Dead Lock

  120. Dead Lock

  121. Dead Lock

  122. DIFÍCIL!

  123. http://rubyconf2008.confreaks.com/what-all-rubyist-should- know-about-threads.html

  124. Mas e os 428372 cores?

  125. Mas e os 428372 cores? vários

  126. Threads Nativas ... em paralelo?

  127. None
  128. None
  129. None
  130. None
  131. None

  132. Então o SO escalona para os vários cores?

  133. None
  134. None

  135. Global Interpreter Lock

  136. GIL? (ou GVL)

  137. GIL? (ou GVL) NO!

  138. GIL? (ou GVL)

  139. GIL? (ou GVL)

  140. GIL? (ou GVL)

  141. GIL? (ou GVL)

  142. Porque desse tal GIL?

  143. Facilitar escrita de extensões em C

  144. None

  145. mas...

  146. None

  147. require "net/http" threads = (1..4).map { Thread.new { html =

    Net::HTTP.get( URI("http://localhost:4567/go")) puts html } } puts "foi-se-se" threads.each &:join

  148. require "net/http" threads = (1..4).map { Thread.new { html =

    Net::HTTP.get( URI("http://localhost:4567/go")) puts html } } puts "foi-se-se" threads.each &:join

  149. require "net/http" threads = (1..4).map { Thread.new { html =

    Net::HTTP.get( URI("http://localhost:4567/go")) puts html } } puts "foi-se-se" threads.each &:join

  150. require "net/http" threads = (1..4).map { Thread.new { html =

    Net::HTTP.get( URI("http://localhost:4567/go")) puts html } } puts "foi-se-se" threads.each &:join

  151. require "net/http" threads = (1..4).map { Thread.new { html =

    Net::HTTP.get( URI("http://localhost:4567/go")) puts html } } puts "foi-se-se" threads.each &:join
  152. None
  153. None
  154. None
  155. None
  156. None
  157. None
  158. None
  159. None
  160. None
  161. None
  162. None
  163. None
  164. None
  165. None
  166. None
  167. None
  168. None
  169. None
  170. None
  171. None
  172. None
  173. None
  174. None
  175. None
  176. None
  177. None
  178. None
  179. None
  180. None
  181. None
  182. None
  183. None

  184. Loop de Eventos

  185. lógica lógica IO lógica lógica IO Done lógica lógica thread

    lógica

  186. lógica lógica IO lógica lógica IO Done lógica lógica thread

    lógica

  187. lógica lógica IO lógica lógica IO Done lógica lógica thread

    lógica

  188. lógica lógica IO lógica lógica IO Done lógica lógica thread

    lógica

  189. lógica lógica IO lógica lógica IO Done lógica lógica thread

    lógica

  190. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  191. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  192. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  193. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  194. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  195. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  196. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  197. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  198. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  199. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  200. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  201. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  202. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  203. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  204. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  205. lógica lógica IO lógica lógica IO Done lógica lógica thread

    thread lógica

  206. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  207. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  208. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  209. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  210. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  211. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  212. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  213. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  214. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  215. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  216. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  217. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  218. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  219. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  220. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  221. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  222. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  223. google_callback = Fiber.new do |html| t = Thread.new { html

    = Net::HTTP.get(URI("http://google.com")) } puts "fui, vou sair da fiber" Fiber.yield t.join puts "OMG! Voltei para fiber" puts html puts "fiber done" end puts "startando a fiber" google_callback.resume puts "vamos aguardar a Fiber?" 5.times { sleep(1) puts "ainda nao" } puts "vamos voltar deliberadamente para a Fiber" google_callback.resume puts "script done"

  224. Show me the money

  225. Reactor Pattern

  226. None
  227. None

  228. Event Machine

  229. #!/usr/bin/env ruby # # server_1 require 'eventmachine' module EchoServer def

    post_init puts "-- someone connected to the echo server!" end def receive_data data send_data ">>> you sent: #{data}" end end EventMachine::run { EventMachine::start_server "127.0.0.1", 8081, EchoServer puts 'running echo server on 8081' }

  230. #!/usr/bin/env ruby # # server_1 require 'eventmachine' module EchoServer def

    post_init puts "-- someone connected to the echo server!" end def receive_data data send_data ">>> you sent: #{data}" end end EventMachine::run { EventMachine::start_server "127.0.0.1", 8081, EchoServer puts 'running echo server on 8081' }

  231. #!/usr/bin/env ruby require 'eventmachine' class Echo < EventMachine::Connection def post_init

    send_data 'Hello' end def receive_data(data) p data end end EventMachine.run { EventMachine.connect '127.0.0.1', 8081, Echo }

  232. #!/usr/bin/env ruby require 'eventmachine' class Echo < EventMachine::Connection def post_init

    send_data 'Hello' end def receive_data(data) p data end end EventMachine.run { EventMachine.connect '127.0.0.1', 8081, Echo }
  233. None
  234. None

  235. Sintaxe horrível?

  236. Sintaxe horrível? Diferente?

  237. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end

  238. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end

  239. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  240. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  241. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  242. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  243. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  244. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  245. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  246. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  247. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  248. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  249. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos

  250. def http_get(url) f = Fiber.current http = EventMachine::HttpRequest.new(url).get http.callback {

    f.resume(http) } http.errback { f.resume(http) } return Fiber.yield end EventMachine.run do Fiber.new{ page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" if page page = http_get('http://www.google.com/') puts "Fetched: #{page.response_header.status}" end }.resume end Loop de Eventos
  251. None

  252. PARALELISMO FAZER VÁRIAS TAREFAS... PARALELAMENTE XD

  253. None
  254. None
  255. None
  256. None
  257. None
  258. None
  259. None

  260. I’m not a threading guy! I’m not a threading guy!

  261. MRI’s Land

  262. (unix) Process

  263. None

  264. pid = Process.fork

  265. pid = Process.fork puts "#{pid}, eu (#{Process.pid}) sou seu pai!

    XD"

  266. do puts "OMG! Nasci!" end pid = Process.fork puts "#{pid},

    eu (#{Process.pid}) sou seu pai! XD"

  267. do puts "OMG! Nasci!" end pid = Process.fork while true

    sleep(1) end puts "#{pid}, eu (#{Process.pid}) sou seu pai! XD"

  268. do puts "OMG! Nasci!" end pid = Process.fork while true

    sleep(1) end while true sleep(1) end puts "#{pid}, eu (#{Process.pid}) sou seu pai! XD"
  269. None

  270. Sem shared memory, sem lock’s

  271. None

  272. rupy = "Rupy BR" Process.fork do end

  273. rupy = "Rupy BR" Process.fork do end rupy << "

    2012" puts "no filho: #{rupy}"

  274. rupy = "Rupy BR" Process.fork do end rupy << "

    2012" puts "no filho: #{rupy}" puts "no pai: #{rupy}"

  275. rupy = "Rupy BR" Process.fork do end rupy << "

    2012" puts "no filho: #{rupy}" puts "no pai: #{rupy}"

  276. rupy = "Rupy BR" Process.fork do end rupy << "

    2012" puts "no filho: #{rupy}" puts "no pai: #{rupy}"

  277. rupy = "Rupy BR" Process.fork do end rupy << "

    2012" puts "no filho: #{rupy}" puts "no pai: #{rupy}"

  278. rupy = "Rupy BR" Process.fork do end rupy << "

    2012" puts "no filho: #{rupy}" puts "no pai: #{rupy}"
  279. None

  280. RAM? Desperdício?

  281. THE FINAL GC!!!

  282. None

  283. Sem shared memory?

  284. E a comunicação?

  285. pid = Process.fork do end

  286. pid = Process.fork do end reader, writer = IO.pipe

  287. pid = Process.fork do end reader, writer = IO.pipe while(

    (msg = gets.chomp) != "fui") writer.puts "Papa: #{msg}" end

  288. pid = Process.fork do end reader, writer = IO.pipe while(

    (msg = gets.chomp) != "fui") writer.puts "Papa: #{msg}" end puts "fui papa!"

  289. pid = Process.fork do end reader, writer = IO.pipe while(

    (msg = gets.chomp) != "fui") writer.puts "Papa: #{msg}" end puts "fui papa!" while(msg = reader.gets) puts msg end

  290. pid = Process.fork do end reader, writer = IO.pipe while(

    (msg = gets.chomp) != "fui") writer.puts "Papa: #{msg}" end puts "fui papa!" while(msg = reader.gets) puts msg end writer.close

  291. pid = Process.fork do end reader, writer = IO.pipe while(

    (msg = gets.chomp) != "fui") writer.puts "Papa: #{msg}" end reader.close puts "fui papa!" while(msg = reader.gets) puts msg end writer.close

  292. Tá de sacanagem! Ficar trocando string?

  293. class Armenga attr_accessor :lol def sera? "oh yeah baby!" end

    end

  294. class Armenga attr_accessor :lol def sera? "oh yeah baby!" end

    end
  295. None

  296. reader, writer = IO.pipe

  297. reader, writer = IO.pipe armenga = Armenga.new armenga.lol = "LoLoLoLing"

    writer.puts Marshal::dump armenga

  298. reader, writer = IO.pipe pid = Process.fork do end armenga

    = Armenga.new armenga.lol = "LoLoLoLing" writer.puts Marshal::dump armenga

  299. reader, writer = IO.pipe pid = Process.fork do end armenga

    = Armenga.new armenga.lol = "LoLoLoLing" writer.puts Marshal::dump armenga reader.close

  300. reader, writer = IO.pipe writer.close data = reader.gets omg =

    Marshal::load data pid = Process.fork do end armenga = Armenga.new armenga.lol = "LoLoLoLing" writer.puts Marshal::dump armenga reader.close

  301. reader, writer = IO.pipe writer.close data = reader.gets omg =

    Marshal::load data pid = Process.fork do end armenga = Armenga.new armenga.lol = "LoLoLoLing" writer.puts Marshal::dump armenga reader.close puts omg.lol puts omg.sera?
  302. None

  303. Tudo lindo! SO cuida de tudo!

  304. Não cuida?

  305. E se tiver 8 cores? 16? 128?

  306. Tem que cuidar dos processos...

  307. http://tomayko.com/writings/unicorn-is-unix

  308. http://www.confreaks.com/videos/1289-rubyconf2012-grow- your-unix-beard-using-ruby Jesse Storimer

  309. None
  310. None
  311. None
  312. None
  313. None
  314. None
  315. None

  316. ACTOR MODEL ROBUSTES MALANDRA INSPIRADA NO ERLANG (OU NO SMALLTALK?)

  317. None
  318. None
  319. None
  320. None
  321. None
  322. None
  323. None
  324. None
  325. None

  326. Futures

  327. class Charlie def report # some sloooooow process here. end

    end

  328. >> future = charlie.future.report class Charlie def report # some

    sloooooow process here. end end

  329. >> future = charlie.future.report => #<Celluloid::Future:0x000001009759b8> class Charlie def report

    # some sloooooow process here. end end

  330. >> future = charlie.future.report => #<Celluloid::Future:0x000001009759b8> >> future.value class Charlie

    def report # some sloooooow process here. end end

  331. >> future = charlie.future.report => #<Celluloid::Future:0x000001009759b8> >> future.value => "Charlie

    Sheen is winning!" class Charlie def report # some sloooooow process here. end end

  332. >> future = charlie.future.report => #<Celluloid::Future:0x000001009759b8> >> future.value => "Charlie

    Sheen is winning!" class Charlie def report # some sloooooow process here. end end include Celluloid
  333. None
  334. None
  335. None

  336. You don't have to choose between threaded and evented IO!

  337. You don't have to choose between threaded and evented IO!

    Celluloid::IO is ideal for servers which handle large numbers of mostly-idle connections.

  338. Yukihiro Matsumoto, RubyConf 2012 Yukihiro Matsumoto, RubyConf 2012 “i’m not

    a threading guy” “i’m not a threading guy”
  339. None
  340. None

  341. Concorrência é uma forma de organizar o pensamento

  342. Concorrência pode ser executada paralelamente

  343. MRI threads não bloqueantes ou processos unix

  344. JRuby e Rubinius threads nativas, sem GIL

  345. Evented IO muitas conexões grande inatividade de cpu

  346. Actor Model Abstração sobre modelos de concorrência

  347. http://merbist.com/2011/10/03/about-concurrency-and-the-gil http://www.confreaks.com/videos/1302-rubyconf2012-the-celluloid-ecosystem http://vimeo.com/groups/waza2012/videos/49718712 http://www.confreaks.com/videos/1281-rubyconf2012-why-jruby-works http://yehudakatz.com/2010/08/14/threads-in-ruby-enough-already http://www.confreaks.com/videos/1289-rubyconf2012-grow-your-unix-beard- using-ruby http://www.engineyard.com/blog/2011/ruby-concurrency-and-you http://jsconf.eu/2009/video_nodejs_by_ryan_dahl.html http://rubyconf2008.confreaks.com/what-all-rubyist-should-know-about-

    threads.html http://jstorimer.com/2012/11/08/matz-is-not-a-threading-guy.html http://tomayko.com/writings/unicorn-is-unix http://www.igvita.com/2010/03/22/untangling-evented-code-with-ruby-fibers http://us2.campaign-archive1.com/? u=542a01cc849b6e2f33b5ada6f&id=2b99e31b31&e=aac63d546b Referências

  348. MUITO Obrigado! Ricardo Valeriano github.com/ ricardovaleriano @sr_valeriano backslashes.net