mruby VM

RubyKaigi 2023 LT

The internal of the mruby VM (in 5 minutes)

Transcript

1. Powered by Rabbit 3.0.1
   mruby VM
   OSS Vision
   Ruby Association
   Yukihiro "Matz" Matsumoto
   @yukihiro_matz
   

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2. Powered by Rabbit 3.0.1
   　
   mruby
   

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3. Powered by Rabbit 3.0.1
   　
   Alternative Ruby Implementation
   

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4. Powered by Rabbit 3.0.1
   　
   M-Ruby
   

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5. Powered by Rabbit 3.0.1
   　
   Modular Ruby
   

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6. Powered by Rabbit 3.0.1
   　
   eMbeddable Ruby
   

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7. Powered by Rabbit 3.0.1
   　
   Memory efficient Ruby
   

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8. Powered by Rabbit 3.0.1
   　
   Embeddable VM
   

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9. Powered by Rabbit 3.0.1
   　
   Register Based Instruction Set
   Ruby Specialized Instructions
   Portable Instruction Set
   

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10. Powered by Rabbit 3.0.1
    　
    Register vs Stack
    

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11. Powered by Rabbit 3.0.1
    Stack based Instructions
    PUSH 1
    PUSH 2
    ADD
    

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12. Powered by Rabbit 3.0.1
    　
    Less Operands
    Smaller Instructions
    Highly Dependent Instruction Order
    

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13. Powered by Rabbit 3.0.1
    Register based Instructions
    LOADINT R1 1
    LOADINT R2 2
    ADD R1 R2
    

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14. Powered by Rabbit 3.0.1
    　
    More Operands
    Longer Instructions
    Independent Instruction Order
    Easier to Peep-hole Optimize
    

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15. Powered by Rabbit 3.0.1
    　
    # a (R1) = 42
    LOADINT R2 42
    MOVE R1 R2
    

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16. Powered by Rabbit 3.0.1
    　
    # a (R1) = 42
    LOADINT R1 42
    

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17. Powered by Rabbit 3.0.1
    　
    Ruby Specialized Instructions
    

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18. Powered by Rabbit 3.0.1
    　
    GETIV,GETCV,GETCONST
    SEND,SENDB
    SUPER
    EXCEPT,RESCUE,RAISEIF
    

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19. Powered by Rabbit 3.0.1
    　
    Portable
    

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20. Powered by Rabbit 3.0.1
    　
    Can be dumped in binary format
    

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21. Powered by Rabbit 3.0.1
    　
    Used by mruby, mruby/c
    

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22. Powered by Rabbit 3.0.1
    　
    Not easy to upgrade
    

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23. Powered by Rabbit 3.0.1
    　
    Compile Once, Run Anywhere
    

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24. Powered by Rabbit 3.0.1
    　
    Even on Keyboards
    

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25. Powered by Rabbit 3.0.1
    　
    Sponsored by
    Salesforce.com
    

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26. Powered by Rabbit 3.0.1
    　
    Sponsored by
    NaCl
    

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27. Powered by Rabbit 3.0.1
    　
    Sponsored by
    GitHub Sponsors
    

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28. Powered by Rabbit 3.0.1
    　
    Sponsored by
    Ruby Community
    

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29. Powered by Rabbit 3.0.1
    　
    Thank you
    

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