goroutineとマルチスレッドデザインパターン/ goroutine and multithreaded design pattern

Transcript

1. goroutineͱ ϚϧνεϨου
 σβΠϯύλʔϯ ߦ໦ লޗ

2. ࣗݾ঺հ • ߦ໦ লޗ(φϝΩ γϣ΢ΰ) • 2016೥౓৽ଔ • Goݴޠྺ 5ϲ݄

3. goroutine࢖ͬͯ·͔͢?

4. GoݴޠΛޠΔ্Ͱ ֎ͤͳ͍ฒྻԽͷػೳ

5. ͜ͷ࢖͍ํ͋ͬͯΔʁ ͢ΕͬͲ͜Θ͍

6. goroutineͷߟ͑ํͱ σβΠϯύλʔϯ

7. GoͰͷฒߦॲཧ

8. υΩϡϝϯτΛॲ෼͢Δ࢓ࣄ υΩϡϝϯτͷࢁ ম٫࿍ Gopher͘Μͱ
 Χʔτ ͨ͘͞Μ͋ΔυΩϡϝϯτΛ೩΍͍ͨ͠

9. ୯७ͳΞϓϩʔν Gopher͘ΜΛ2ඖ(ਓ?)ʹ

10. ಉظ଴͕ͪൃੜͯ͠͠·͏ ম٫࿍Λ࢖͑Δͷ͸1౓ʹ1ඖ(ਓ?)

11. ಉظ଴͕ͪൃੜͯ͠͠·͏ ম٫࿍Λ࢖͑Δͷ͸1౓ʹ1ඖ(ਓ?)

12. ૿΍ͯ͠΋ޮՌ্͕͕ΓͮΒ͍

13. GoݴޠͰͷΞϓϩʔν

14. ฒྻͳॲཧ Gopher͘ΜΛฒྻʹಈ͔͢ͷͰ͸ͳ͘

15. ฒߦͳॲཧ Gopher͘ΜΛฒߦʹಈ͔͢

16. ฒߦͳॲཧ υΩϡϝϯτΛΧʔτʹੵΉGopher͘Μ

17. ฒߦͳॲཧ ΧʔτΛӡͿGopher͘Μ

18. ฒߦͳॲཧ υΩϡϝϯτΛΧʔτ͔Β͓Ζͯ͠ ೩΍͢Gopher͘Μ

19. ฒߦͳॲཧ υΩϡϝϯτΛੵΜͰ͍ͨ ΧʔτΛ໭͢Gopher͘Μ

20. Կ͕خ͍͠ͷ͔

21. ॲཧΛ଴ͨͳͯ͘ྑ͍

22. ॲཧΛ଴ͨͳͯ͘ྑ͍ ӡͿͷ͕࢓ࣄ

23. ॲཧΛ଴ͨͳͯ͘ྑ͍ ೩΍͠ऴΘΔͷΛ ଴ͨͳ͍

24. ΍Δ͜ͱ͕ͳ͚Ε͹ࢭ·Δ͚ͩ

25. ͜ΕΒΛ࣮ݱ͢Δػೳ • channel • Gopher͘ΜͷؒΛܨ͍Ͱ͘ΕΔ • ෳ਺ͷGopher͘Μ͕channelΛୣ͍߹͏ͷΛ๷͙ • select •

    ෳ਺ͷGopher͘Μ͔ΒຊΛड͚औΕΔ • mutexͷύοέʔδͱ͔

26. ϚϧνεϨου σβΠϯύλʔϯ

27. ϚϧνεϨου
 σβΠϯύλʔϯ • Single Thread Execution • Immutable • Guarded

    Suspension • Balking • Producer-Consumer • Read-Write Lock • Thread-Per-Message • Worker Thread • Future • Two-Phase Termination • Thread-Specific Storage • Active Object

28. channelͰղܾ • Single Thread Execution • Immutable • Guarded Suspension

    • Balking • Producer-Consumer • Read-Write Lock • Thread-Per-Message • Worker Thread • Future • Two-Phase Termination • Thread-Specific Storage • Active Object

29. selectͰղܾ • Single Thread Execution • Immutable • Guarded Suspension

    • Balking • Producer-Consumer • Read-Write Lock • Thread-Per-Message • Worker Thread • Future • Two-Phase Termination • Thread-Specific Storage • Active Object

30. ύοέʔδͰղܾ • Single Thread Execution • Immutable • Guarded Suspension

    • Balking • Producer-Consumer • Read-Write Lock • Thread-Per-Message • Worker Thread • Future • Two-Phase Termination • Thread-Specific Storage • Active Object

31. ؾΛ͚ͭͳ͍ͱ͍͚ͳ͍͜ͱ

32. ϚϧνεϨου σβΠϯύλʔϯ • Single Thread Execution • Immutable • Guarded

    Suspension • Balking • Producer-Consumer • Read-Write Lock • Thread-Per-Message • Worker Thread • Future • Two-Phase Termination • Thread-Specific Storage • Active Object

33. Thread-Per Message • ϝοηʔδΛड͚औΔຖʹεϨουΛཱͯΔ

34. Thread-Per Message • ϝοηʔδΛड͚औΔຖʹεϨουΛཱͯΔ υΩϡϝϯτΛड͚औͬͨΒ……

35. Thread-Per Message • ϝοηʔδΛड͚औΔຖʹεϨουΛཱͯΔ ͦΕຖʹGopher͘ΜΛ࡞Δ

36. Thread-Per Message • ϝοηʔδΛड͚औΔຖʹεϨουΛཱͯΔ

37. Goͩͱ΍Γ͕ͪ func processHandler(w http.ResponseWriter, r *http.Request) { ~~~όϦσʔγϣϯͱ͔Payloadऔಘͱ͔~~ go Heavy()

    // ͜ͷ෦෼ʂʂʂ w.WriteHeader(http.StatusAccepted) }

38. Worker Thread • ࠷ॳ͔ΒεϨουΛಈ͔͓ͯ͘͠

39. Worker Thread • ࠷ॳ͔ΒεϨουΛಈ͔͓ͯ͘͠ υΩϡϝϯτΛ
 ड͚औͬͨΒ…… !

40. Worker Thread • ࠷ॳ͔ΒεϨουΛಈ͔͓ͯ͘͠ ۭ͍ͯΔ ୭͔͕୲౰

41. Worker Thread • ࠷ॳ͔ΒεϨουΛಈ͔͓ͯ͘͠ ! ·ͨདྷͨΒ……

42. Worker Thread • ࠷ॳ͔ΒεϨουΛಈ͔͓ͯ͘͠ ۭ͍ͯΔ ୭͔͕୲౰

43. Worker Thread • ࠷ॳ͔ΒεϨουΛಈ͔͓ͯ͘͠ Gopher͘Μͷ ਺͸૿͑ͳ͍

44. channelͩͱ؆୯ func heavy(queue <-chan string) { url := <-queue //

    ϦΫΤετॲཧ } func main() { queue := make(chan string, 32) for i := 0; i < 3; i++ { go heavy(queue) } queue <- “https://google.co.jp” queue <- “https://google.com” // লུ }

45. ͜ΕͰ΋͏goroutine΋ ා͘ͳ͍ʂʂʂ

46. Α͖goroutineϥΠϑΛ!!!