RubyKaigi 2024 にみんなで参加した Techouse の その後の進捗 with Ruby

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1. RubyKaigi 2024 にみんなで参加した Techouse の その後の進捗 with Ruby RubyKaigi 2024 follow up スポンサーLT 2024.8.31 Techouse 山崎良祐 ( @nappa )
2. P2 ©︎Techouse All Rights Reserved Techouse @nappa と申します
3. P3 ©︎Techouse All Rights Reserved 今春入社の フレッシャーな仲間と RubyKaigi 2024 参加 しました
4. P4 ©︎Techouse All Rights Reserved
5. P5 ©︎Techouse All Rights Reserved
6. P6 ©︎Techouse All Rights Reserved Ruby 1.6 のころ 生まれた世代
7. P7 ©︎Techouse All Rights Reserved
8. P8 ©︎Techouse All Rights Reserved 高校1年で Bignum/Fixnum 廃止 (=Ruby 2.4+)
9. P9 ©︎Techouse All Rights Reserved with…
10. P10 ©︎Techouse All Rights Reserved わたくし
11. P11 ©︎Techouse All Rights Reserved 高校1年のころ Ruby 1.6 で 遊んでた世代 マヨネーズ色の本
12. P12 ©︎Techouse All Rights Reserved 世代を超えて 愛される Ruby
13. P13 ©︎Techouse All Rights Reserved 世代を超えて 技術継承したい
14. P14 ©︎Techouse All Rights Reserved
15. P15 ©︎Techouse All Rights Reserved RubyKaigi 2024 参加前には Ruby Internal を みんなで学習
16. struct RObject { /** Basic part, including flags and class. */ struct RBasic basic; /** Object's specific fields. */ union { struct { VALUE *ivptr; struct rb_id_table *iv_index_tbl; } heap; /* Embedded instance variables. When an object is small enough, it * uses this area to store the instance variables. */ VALUE ary[1]; } as; }; Ruby Object (RObject型) https://github.com/ruby/ruby/blob/master/include/ruby/internal/core/robject. h Cソース (robject.h) RBasic VALUE *ivptr struct rb_id_table *iv_index_tbl; RObject 社内イベント資料より抜粋
17. struct RObject { /** Basic part, including flags and class. */ struct RBasic basic; /** Object's specific fields. */ union { struct { VALUE *ivptr; struct rb_id_table *iv_index_tbl; } heap; /* Embedded instance variables. When an object is small enough, it * uses this area to store the instance variables. */ VALUE ary[1]; } as; }; Ruby Object (RObject型) https://github.com/ruby/ruby/blob/master/include/ruby/internal/core/robject. h Cソース (robject.h) Struct RBasic VALUE *ivptr struct rb_id_table *iv_index_tbl; RObject 社内イベント資料より抜粋
18. struct RBasic { /** * Per-object flags. Each Ruby object has its own characteristics apart * from its class. For instance, whether an object is frozen or not is not * controlled by its class. This is where such properties are stored. * * @see enum ::ruby_fl_type * * @note This is ::VALUE rather than an enum for alignment purposes. Back * in the 1990s there were no such thing like `_Alignas` in C. */ VALUE flags; /** * Class of an object. Every object has its class. Also, everything is an * object in Ruby. This means classes are also objects. Classes have * their own classes, classes of classes have their classes too, and it * recursively continues forever. * * Also note the `const` qualifier. In Ruby, an object cannot "change" its * class. */ const VALUE klass; }; Ruby Object 共通データ (RBasic 型) https://github.com/ruby/ruby/blob/master/include/ruby/internal/core/robject. Cソース (rbasic.h) VALUE *ivptr struct rb_id_table *iv_index_tbl; RObject struct RBasic VALUE flags VALUE klass 社内イベント資料より抜粋
19. struct RBasic { /** * Per-object flags. Each Ruby object has its own characteristics apart * from its class. For instance, whether an object is frozen or not is not * controlled by its class. This is where such properties are stored. * * @see enum ::ruby_fl_type * * @note This is ::VALUE rather than an enum for alignment purposes. Back * in the 1990s there were no such thing like `_Alignas` in C. */ VALUE flags; /** * Class of an object. Every object has its class. Also, everything is an * object in Ruby. This means classes are also objects. Classes have * their own classes, classes of classes have their classes too, and it * recursively continues forever. * * Also note the `const` qualifier. In Ruby, an object cannot "change" its * class. */ const VALUE klass; }; Ruby Object 共通データ (RBasic 型) https://github.com/ruby/ruby/blob/master/include/ruby/internal/core/robject. Cソース (rbasic.h) VALUE *ivptr struct rb_id_table *iv_index_tbl; RObject struct RBasic VALUE flags VALUE klass 社内イベント資料より抜粋
20. Ruby Object 共通データ (RBasic 型) VALUE *ivptr struct rb_id_table *iv_index_tbl; RObject struct RBasic VALUE flags VALUE klass インスタンス変数を収納する配列へのポインタ メソッドを探索するハッシュテーブルへのポインタ クラス フラグ (freeze or not, GC のマーク (後述)) 社内イベント資料より抜粋
21. P21 ©︎Techouse All Rights Reserved フレッシャーズブログ
23. P23 ©︎Techouse All Rights Reserved RubyKaigi ではみなさま 本当にありがとうございました
24. P24 ©︎Techouse All Rights Reserved その後の進捗
25. P25 ©︎Techouse All Rights Reserved https://www.cecs.uci.edu/~papers/mpr/MPR/ARTICLES/101402.PDF CPUの中の パイプラインとか 分岐予測とか キャッシュライン とか……
26. P26 ©︎Techouse All Rights Reserved http://ithare.com/infographics-operation-costs-in-cpu-clock-cycles/ CPU内で 何が何サイクル かかるとかいう話
27. P27 ©︎Techouse All Rights Reserved Ruby で!
28. P28 ©︎Techouse All Rights Reserved 4.8 sec 5.1 sec 0から1億までの数を ソート済にした配列のなかの 奇数をかぞえる 0から1億までの数を シャッフルした配列のなかの 奇数をかぞえる 分岐予測に当たるとき・当たらないときに計算コストの差
29. P29 ©︎Techouse All Rights Reserved 2次元配列を 行→列方向に アクセス 2次元配列を 列→行方向に アクセス 6.4 sec 12.9 sec キャッシュメモリに当たるとき・当たらないときの計算コストの差
30. P30 ©︎Techouse All Rights Reserved 3.4 sec 6.0 sec 2**63 に 10000000回 ゼロを足す 0に 10000000回 ゼロを足す 固定長整数と可変長整数の計算コストの差
31. P31 ©︎Techouse All Rights Reserved 通じあえる仲間
32. P32 ©︎Techouse All Rights Reserved さて
33. P33 ©︎Techouse All Rights Reserved 「技術は手段にすぎない」
34. P34 ©︎Techouse All Rights Reserved と、よく 言われますが
35. P35 ©︎Techouse All Rights Reserved 私は違うと思います
36. P36 ©︎Techouse All Rights Reserved それ自体を 楽しむ 目的がある
37. P37 ©︎Techouse All Rights Reserved わかればわかるほど 楽しい世界
38. P38 ©︎Techouse All Rights Reserved その楽しさを 知ってるエンジニアと いっしょに働きたい
39. P39 ©︎Techouse All Rights Reserved その楽しさを 世代を超えて 伝えていきたい
40. P40 ©︎Techouse All Rights Reserved 世代を超える 「その後」 のために
41. P41 ©︎Techouse All Rights Reserved Techouse の 今後の進捗に ご期待ください 〜つづく〜