Virtual Machines: Down the Rabbit Hole

Transcript

1. Virtual Machines DOWN THE RABBIT HOLE Ruby USER GROUP BERLIN

   6. JUNE 2013

2. TXUSTICE

3. None

4. POLITICAL SCIENCE DROPOUT

5. DON'T TRUST A WORDI SAY

6. BARCELONA / BERLIN =>

7. PROCESS VIRTUAL MACHINES

8. WHY oh why

9. WHY oh why Portability

10. WHY oh why Portability PERFORMANCE

11. WHY oh why PELICAN

12. wat

13. SOURCE CODE puts "hello world"

14. SOURCE CODE puts "hello world" AST send self puts hello

    world

15. SOURCE CODE puts "hello world" AST send self puts hello

    world BYTECODE PUSH_SELF PUSH "puts" PUSH "hello world" CALL 1

16. COMPALER

17. COMPILER

18. BUT HOW DOES A VM LOOK LIKE?

19. HUGE-ASS CASE STATEMENT

20. STACK PUSH 2 PUSH 3 ADD PROGRAM IP 2 *

    3

21. 2 STACK PUSH 2 PUSH 3 ADD PROGRAM IP 2

    * 3

22. 3 2 STACK PUSH 2 PUSH 3 ADD PROGRAM IP

    2 * 3

23. 5 STACK PUSH 2 PUSH 3 ADD PROGRAM IP 2

    * 3

24. STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT 1 PUSH_LIT 2 CALL 2

    PROGRAM IP puts "hello world", 42 "puts" "hello world" 42 LITERALS

25. <SELF> STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT 1 PUSH_LIT 2 CALL

    2 PROGRAM IP puts "hello world", 42 "puts" "hello world" 42 LITERALS

26. "puts" <SELF> STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT 1 PUSH_LIT 2

    CALL 2 PROGRAM IP puts "hello world", 42 "puts" "hello world" 42 LITERALS

27. BABY DUCK

28. "hello world" "puts" <SELF> STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT 1

    PUSH_LIT 2 CALL 2 PROGRAM IP puts "hello world", 42 "puts" "hello world" 42 LITERALS

29. 42 "hello world" "puts" <SELF> STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT

    1 PUSH_LIT 2 CALL 2 PROGRAM IP puts "hello world", 42 "puts" "hello world" 42 LITERALS

30. nil STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT 1 PUSH_LIT 2 CALL

    2 PROGRAM IP puts "hello world", 42 "puts" "hello world" 42 LITERALS

31. IT PRINTED "HELLO WORLD" HEH

32. EVER SEEN A FUNCTION? def greet(name) puts "Hello, ", name

    end

33. STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT 1 PUSH_LOCAL 0 CALL 2

    PROGRAM IP def greet(name) puts "Hello, ", name end "puts" "Hello, " LITERALS name: "John" LOCALS

34. <SELF> STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT 1 PUSH_LOCAL 0 CALL

    2 PROGRAM IP def greet(name) puts "Hello, ", name end "puts" "Hello, " LITERALS name: "John" LOCALS

35. "puts" <SELF> STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT 1 PUSH_LOCAL 0

    CALL 2 PROGRAM IP def greet(name) puts "Hello, ", name end "puts" "Hello, " LITERALS name: "John" LOCALS

36. "Hello, " "puts" <SELF> STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT 1

    PUSH_LOCAL 0 CALL 2 PROGRAM IP def greet(name) puts "Hello, ", name end "puts" "Hello, " LITERALS name: "John" LOCALS

37. "John" "Hello, " "puts" <SELF> STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT

    1 PUSH_LOCAL 0 CALL 2 PROGRAM IP def greet(name) puts "Hello, ", name end "puts" "Hello, " LITERALS name: "John" LOCALS

38. nil STACK PUSH_SELF PUSH_LIT 0 PUSH_LIT 1 PUSH_LOCAL 0 CALL

    2 PROGRAM IP def greet(name) puts "Hello, ", name end "puts" "Hello, " LITERALS name: "John" LOCALS

39. GARBAGE COLLECTION

40. THE ALLOCATOR

41. WHAT'S THE OPPOSITE OF AN ALLIGATOR?

42. REFERENCE COUNTING object.refcount++ WHEN WE PUSH AN OBJECT TO THE

    STACK object.refcount-- WHEN WE POP AN OBJECT FROM THE STACK BROUGHT TO YOU BY NAIVETY

43. COOLER ALGORITHMS GENERATIONAL BAKER'S TREADMILL BROUGHT TO YOU BY COMPUTER

    SCIENCE MASTERMINDS REAL-TIME INCREMENTAL NON-MOVING NON-COPYING MOVING COPYING CONCURRENT BITMAP MARKING TRICOLOR STOP-THE-WORLD MARK & SWEEP BACON-FLAVOURED SENTIMENTAL KEBAP

44. JUST IN TIME

45. JUST IN TIME COMPILING VM Bytecode MACHINE CODE x86 x86_64

    arm

46. CHECK THIS OUT breaux: even cooler cool IF THIS TOPIC

    IS RELEVANT TO YOUR INTERESTS

47. THANKS! txustice txus QUESTIONS?