mruby の Hello World

2018/07/20 Fukuoka.rb #100 LT

Transcript

1. mruby ͷ Hello World 2018/07/20 Fukuoka.rb #100 LT ODA Hirohito
2. mruby ͱ͸Կͧ΍ʁ
3. mruby ͱ͸Կͧ΍ʁ https://github.com/mruby/mruby#what-is-mruby
4. mruby ͱ͸Կͧ΍ʁ ૊ࠐιϑτ΢ΣΞʹ࢖ΘΕΔࣄΛ໨తͱͨ͠
 ܰྔͳߴڃϓϩάϥϛϯάݴޠ
5. Hello World
6. αϯϓϧίʔυ https://github.com/mruby/mruby/wiki/Hello-World#source-code
7. ࣮ߦ݁Ռ https://github.com/mruby/mruby/wiki/Hello-World#execution
8. ͪΐͬͱ଴ͬͯʂ
10. ͳΜ͔ίʔυ௕͘ͳ͍ʁ
11. Ruby Ͱॻ͍ͨ Hello World C Ͱॻ͍ͨ Hello World
12. ͜ͷίʔυ͸ԿΛ΍͍ͬͯΔʁ
14. puts ͸ C ͷؔ਺
15. ͜ΕΒ͕ mruby ͷػೳʢͷ͸ͣʣ
16. ͜Ε͸ͻͱ·ͣແࢹ
18. 1. όʔνϟϧϚγϯΛද͢ʮmrb_stateʯͷॳظԽ 2. ϓϩάϥϜݻ༗ͷΫϥεɺϝιουͷఆٛ 3. Ruby ϓϩάϥϜͷίϯύΠϧͱ࣮ߦ 4. ඞཁʹԠͯ͡ʢϓϩάϥϜݻ༗ͷʣϝιουͷ ݺͼग़͠ 5. ޙ࢝຤ ·ͭ΋ͱΏ͖ͻΖ௚఻ ૊ࠐ Rubyʮmrubyʯͷ͢΂ͯ ૯ूฤ ୈ 3 ճ mruby Λ૊ΈࠐΜͩϓϩάϥϜͷڍಈ
19. •mrb_state *mrb = mrb_open();
 
 
 •mrb_load_string(mrb, “p ‘hello world!’”);
 
 
 •mrb_close(mrb);
 

20. •mrb_state *mrb = mrb_open();
 
 
 •mrb_load_string(mrb, “p ‘hello world!’”);
 
 
 •mrb_close(mrb);
 
 → ϙΠϯλʔม਺ mrb ΛΦʔϓϯͯͦ͠͏ → mrb ΛΫϩʔζͯͦ͠͏ → mrb ʹจࣈྻΛϩʔυͯͦ͠͏
21. •mrb_state *mrb = mrb_open();
 
 
 •mrb_load_string(mrb, “p ‘hello world!’”);
 
 
 •mrb_close(mrb);
 
 → ϙΠϯλʔม਺ mrb ΛΦʔϓϯͯͦ͠͏ → mrb ΛΫϩʔζͯͦ͠͏ → mrb ʹจࣈྻΛϩʔυͯͦ͠͏ → mrb ͷϝϞϦʔྖҬΛ֬อͯͦ͠͏ → mrb ͷϝϞϦʔྖҬΛղ์ͯͦ͠͏
22. •mrb_state *mrb = mrb_open();
 
 
 •mrb_load_string(mrb, “p ‘hello world!’”);
 
 
 •mrb_close(mrb);
 
 → ϙΠϯλʔม਺ mrb ΛΦʔϓϯͯͦ͠͏ → mrb ΛΫϩʔζͯͦ͠͏ → mrb ʹจࣈྻΛϩʔυͯͦ͠͏ → mrb ͷϝϞϦʔྖҬΛ֬อͯͦ͠͏ → mrb ͷϝϞϦʔྖҬΛղ์ͯͦ͠͏ → mrb ʹจࣈྻΛϩʔυ࣮ͯ͠ߦͯͦ͠͏
23. 1. όʔνϟϧϚγϯΛද͢ʮmrb_stateʯͷॳظԽ 2. ϓϩάϥϜݻ༗ͷΫϥεɺϝιουͷఆٛ 3. Ruby ϓϩάϥϜͷίϯύΠϧͱ࣮ߦ 4. ඞཁʹԠͯ͡ʢϓϩάϥϜݻ༗ͷʣϝιουͷ ݺͼग़͠ 5. ޙ࢝຤ ·ͭ΋ͱΏ͖ͻΖ௚఻ ૊ࠐ Rubyʮmrubyʯͷ͢΂ͯ ૯ूฤ ୈ 3 ճ mruby Λ૊ΈࠐΜͩϓϩάϥϜͷڍಈ
24. 1. όʔνϟϧϚγϯΛද͢ʮmrb_stateʯͷॳظԽ 2. ϓϩάϥϜݻ༗ͷΫϥεɺϝιουͷఆٛ 3. Ruby ϓϩάϥϜͷίϯύΠϧͱ࣮ߦ 4. ඞཁʹԠͯ͡ʢϓϩάϥϜݻ༗ͷʣϝιουͷ ݺͼग़͠ 5. ޙ࢝຤ mruby Λ૊ΈࠐΜͩϓϩάϥϜͷڍಈ → mrb_open() → mrb_close(mrb) → mrb_load_string(mrb, “p ‘hello world!’”)
25. gdb
26. ͜͜ʹϒϨΠΫϙΠϯτΛஔ͍ͯ εςοϓΞ΢τ࣮ߦ͢Δ
29. ←͜͜Ͱʮhello world!ʯΛग़ྗ
30. ←͜͜Ͱʮhello world!ʯΛग़ྗ
31. mrb_load_string_cxt Λ
 ௥͍͔͚ͯΈΔ
32. mrb_load_string_cxt ↓ mrb_load_nstring_cxt ↓ mrb_load_exec ↓ mrb_top_run ↓ mrb_vm_run ↓ mrb_vm_exec
33. mrb_vm_exec ͸໿ 2,000 ߦͷؔ਺
35. mruby ͷ verbose Φϓγϣϯ
37. mrb_vm_exec ؔ਺಺ʹ͋Δ
 ΦϖϥϯυͱࣅͨΑ͏ͳ΋ͷ͕
 ग़ྗ͞Ε͍ͯΔؾ͕͢Δ
38. ͳΜ͔ಡΊΔΑ͏ͳ
 ؾ͕͠ͳ͘΋ͳ͘ͳͬͨʂ
39. ᶃ Ϩδελʔ R1 ʹ self ΛϩʔυʢϨγʔόʔΛઃఆʣ ᶄ Ϩδελʔ R2 ʹ ‘hello world!’ Λ୅ೖʢҾ਺Λઃఆʣ ᶅ Ϩδελʔ R1 ͷΦϒδΣΫτʹରͯ͠ ‘p’ ϝιουΛ Ҿ਺͕̍ͭͰ࣮ߦ ɾɾɾᶃ ɾɾɾᶄ ɾɾɾᶅ
40. ᶃ Ϩδελʔ R1 ʹ self ΛϩʔυʢϨγʔόʔΛઃఆʣ ᶄ Ϩδελʔ R2 ʹ ‘hello world!’ Λ୅ೖʢҾ਺Λઃఆʣ ᶅ Ϩδελʔ R1 ͷΦϒδΣΫτʹରͯ͠ ‘p’ ϝιουΛ Ҿ਺͕̍ͭͰ࣮ߦ ɾɾɾᶃ ɾɾɾᶄ ɾɾɾᶅ → ݁Ռ “hello world!” Λग़ྗ͢Δ
41. ͭ·Γ mrb_load_string(mrb, “p ‘hello world!’”) ͸ 1. mruby VM Λද͢ mrb ʹ 2. “p ‘hello world!’” ΛόΠτίʔυʹม׵ͯ͠
 ϩʔυ͠ 3. mruby ͷόΠτίʔυ໋ྩʹै࣮ͬͯߦ͢Δ ͱ͍͏΋ͷͰ͸ͳ͍͔ͱ͍͏ਪଌ
42. ͭ·Γ mrb_load_string(mrb, “p ‘hello world!’”) ͸ 1. mruby VM Λද͢ mrb ʹ 2. “p ‘hello world!’” ΛόΠτίʔυʹม׵ͯ͠
 ϩʔυ͠ 3. mruby ͷόΠτίʔυ໋ྩʹै࣮ͬͯߦ͢Δ ͱ͍͏΋ͷͰ͸ͳ͍͔ͱ͍͏ਪଌ → Ruby ϓϩάϥϜͷίϯύΠϧͱ࣮ߦ
43. ·ͱΊ • Hello World Ͱ΋ϋοΫ͢ΔͱԞ͕ਂ͍ • Ruby ͷ YARV ΋ࣅͨΑ͏ͳײ͡ʁ
44. ͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠