1. The Rubinius Virtual Machine
Brian Ford
brixen @ {twitter IRC gmail}
presented at Galois, Inc 30 Nov 10

3. Rubinius runs Ruby

4. Methods

5. Methods

6. Methods

7. Blocks

8. Blocks

9. Scopes

10. Classes

11. Classes

12. Modules

13. Modules

14. Modules

15. Singleton Classes

16. Singleton Classes

17. Expressions

18. Rubinius History

20. Sydney
thread-safe MRI
prototype B
prototype S

21. ~4 years
early Git user
open commit policy

22. virtual machines
garbage collectors
bytecode compilers
Ruby core library
primitives systems
JIT compilers
of RubySpecs
2
1.75
3
1
2
2
tons

23. Virtual Machine

24. bootstrapping

25. VM | OM

26. object memory
ontology
methods

27. vm/ontology.cpp
vm/environment.cpp
vm/builtin/

28. VM | OM
alpha.rb

29. VM | OM
alpha.rb
bootstrap/

30. kernel/bootstrap/array.rb

31. VM | OM
alpha.rb
bootstrap/
platform/

32. kernel/platform/posix.rb

33. VM | OM
alpha.rb
bootstrap/
platform/
common/

34. VM | OM
alpha.rb
bootstrap/
platform/
common/
delta/

35. VM | OM
alpha.rb
bootstrap/
platform/
common/
delta/
loader.rb

36. set paths
process options
run application

37. VM | OM
alpha.rb
bootstrap/
platform/
common/
delta/
loader.rb
Ruby
C++

38. interpreters

39. vm/instructions.def

40. vm/instructions.def

41. vm/instructions.def

42. vm/instructions.def

43. vm/instructions.def

44. vm/instructions.def

45. vm/instructions.def

46. String
Bytecode Compiler
File
AST
Symbolic
Bytecode
Compiled
Method
Compiled
File

47. lib/compiler/compiler.rb

48. lib/compiler/ast/operators.rb

49. spec/compiler/and_spec.rb

50. field access

51. kernel/bootstrap/array.rb

52. vm/builtin/array.hpp

53. primitives

54. kernel/bootstrap/array.rb

55. vm/builtin/array.hpp

56. vm/gen/primitives_glue.gen.hpp

57. Garbage Collector

58. Large Object Space
Nursery
Young
Semi-
Space
Mature
Immix
Generational

59. Nursery
slab 1 slab 2

60. auto-tuned
lifetime

61. Immix:
A Mark-Region Garbage Collector
with Space Efficiency, Fast
Collection, and Mutator
Performance
Blackburn, S. & McKinley, K.
(PLDI 2008)

62. C-API

63. MRI native API
legacy code
poor quality

64. Inflated Headers
Flags
field 1
...

65. Inflated Headers
Tagged
Pointer
field 1
...
Flags
handle

66. JIT

67. bytecode to LLVM IR

68. program
threads
JIT
threads

69. vm/llvm/jit_visit.hpp

70. uncommon_interpreter

71. pure functions

72. Custom Passes
guard elimination

73. rbx -Xjit.dump_code=N
LLVM IR = 1
optimized IR = 2
machine code = 4

74. exceptions

75. RubySpec

76. array/index_spec.rb

77. array/index_spec.rb

78. integer/even_spec.rb

79. file/open_spec.rb

80. 3521 files,
15769 examples,
43797 expectations,
0 failures, 0 errors

81. Future Rubinius

82. full concurrency
(hydra branch)

83. method store
(image?)
lazy loading

84. build system

85. modularity
swap core library

86. LLVM metadata
type propagation

87. LLVM metadata
type propagation

88. runtime compilation
with clang
(Windows, C-ext)

89. StrongRuby ?

90. Android
mobile

91. Web
rubini.us
Github
github.com/evanphx/rubinius
IRC
#rubinius

92. Thank you