RubyConf 2010 - MacRuby: Why and How

What’s new since RubyConf 2009
See some examples of how fun it is to hack with MacRuby

Summary and more information:
http://matt.aimonetti.net/posts/2010/11/12/rubyconf-2010-macruby-talk/

Video:
http://www.confreaks.com/videos/448-rubyconf2010-macruby-why-and-how

Transcript

1. MACRUBY A p p l e ’ s R u b y M a t t A i m o n e t t i - R u b y C o n f X - N o v 2 0 1 0 Friday, November 12, 2010
2. ABOUT ME Friday, November 12, 2010
3. Friday, November 12, 2010
4. Hacker Friday, November 12, 2010
5. MacRuby Friday, November 12, 2010
6. http://macruby.labs.oreilly.com/ Friday, November 12, 2010
7. MACRUBY A p p l e ’ s R u b y Friday, November 12, 2010
8. MacRuby YARV Parser GC Runtime Stdlib Builtin classes Ruby 1.9 Friday, November 12, 2010
9. MacRuby LLVM/Roxor Parser Stdlib AOT JIT Obj-C Runtime libobjc libauto Builtin Classes CoreFoundation MacRuby Friday, November 12, 2010
10. MacRuby LLVM/Roxor Parser Stdlib AOT JIT Obj-C Runtime libobjc libauto Builtin Classes CoreFoundation YARV Parser GC Runtime Stdlib Builtin classes Ruby 1.9 Friday, November 12, 2010
11. MacRuby LLVM Friday, November 12, 2010
12. JIT Compilation MacRuby Friday, November 12, 2010
13. JIT Compilation MacRuby Ruby AST LLVM IR Machine Code CPU Transforms the AST into LLVM intermediate representation ... optimizes it ... compiles it to machine code ... and executes it! Very good performance for algorithmic operations Friday, November 12, 2010
14. AOT Compilation MacRuby Friday, November 12, 2010
15. AOT Compilation MacRuby Ruby AST LLVM IR Machine Code Mach-O Object File CLI tool or Xcode ... applies more optimizations ... and saves the machine code to disk ... faster bootstrap time Can be used to obfuscate the source code Friday, November 12, 2010
16. NO GIL No Global Interpreter Lock Friday, November 12, 2010
17. GC Thread Thread VM VM VM Core Friday, November 12, 2010
18. MULTI-THREADED GENERATIONAL GC Friday, November 12, 2010
19. NATIVE ACCESS TO COCOA Friday, November 12, 2010
20. WHEN . TO USE MACRUBY? NOT Friday, November 12, 2010
21. YOU DON’T HAVE A MAC Friday, November 12, 2010
22. LINUX HOSTING Friday, November 12, 2010
23. YOU DON’T WANT TO LEARN Friday, November 12, 2010
24. WHAT’S NEW? Friday, November 12, 2010
25. COCOA DEV IS STABLE Friday, November 12, 2010
26. DNA Sequencing by Hampton Catlin Friday, November 12, 2010
27. AOT COMPILATION Friday, November 12, 2010
28. MacRuby: De nitive Guide Hello World Example Friday, November 12, 2010
29. framework 'AppKit' class AppDelegate def applicationDidFinishLaunching(notification) voice_type = "com.apple.speech.synthesis.voice.GoodNews" @voice = NSSpeechSynthesizer.alloc.initWithVoice(voice_type) end def windowWillClose(notification) puts "Bye!" exit end def say_hello(sender) @voice.startSpeakingString("Hello World!") puts "Hello World!" end end app = NSApplication.sharedApplication app.delegate = AppDelegate.new window = NSWindow.alloc.initWithContentRect([200, 300, 300, 100], styleMask:NSTitledWindowMask|NSClosableWindowMask|NSMiniaturizableWindowMask, backing:NSBackingStoreBuffered, defer:false) window.title = 'MacRuby: The Definitive Guide' window.level = 3 window.delegate = app.delegate button = NSButton.alloc.initWithFrame([80, 10, 120, 80]) button.bezelStyle = 4 button.title = 'Hello World!' button.target = app.delegate button.action = 'say_hello:' window.contentView.addSubview(button) window.display window.orderFrontRegardless app.run hello_world.rb Friday, November 12, 2010
30. $ macrubyc hello_world.rb -o demo $ file demo demo: Mach-O 64-bit executable x86_64 $ ./demo Compile to machine code Friday, November 12, 2010
31. w00t!! Friday, November 12, 2010
32. Create compiled/ dynamic libraries $ macrubyc file1.rb file2.rb -o shared.dylib --dylib $ macrubyc other_project_source.rb shared.dylib -o example $ ./example Friday, November 12, 2010
33. DEBUGGER Friday, November 12, 2010
34. characters = %w{Adama Apollo Baltar Roslin StarBuck Six} def cylon?(character) false # buggy detector end characters.each do |character| if cylon?(character) puts "#{character} is a Cylon!" else puts "#{character} is not a cylon." end end Friday, November 12, 2010
35. $ macruby cylon_detector.rb Adama is not a cylon. Apollo is not a cylon. Baltar is not a cylon. Roslin is not a cylon. StarBuck is not a cylon. Six is not a cylon. Buggy code :( Friday, November 12, 2010
36. $ macrubyd cylon_detector.rb Starting program. 1! characters = %w{Adama Apollo Baltar Roslin StarBuck Six} cylon_detector.rb:1> Debug the detector live Friday, November 12, 2010
37. cylon_detector.rb:1> b cylon_detector.rb:8 if character == 'Six' Added breakpoint 1. Added a breakpoint on a speci c le/line based on a condition Friday, November 12, 2010
38. cylon_detector.rb:1> c Adama is not a cylon. Apollo is not a cylon. Baltar is not a cylon. Roslin is not a cylon. StarBuck is not a cylon. 8! if cylon?(character) cylon_detector.rb:8> Breaks on condition Friday, November 12, 2010
39. cylon_detector.rb:8> p character => "Six" cylon_detector.rb:8> p cylon?(character) => false Bug con rmed :( Friday, November 12, 2010
40. cylon_detector.rb:8> p def cylon?(character) character == 'Six' end ZOMG live bug xing! Friday, November 12, 2010
41. cylon_detector.rb:8> c Six is a Cylon! Program exited. w00t!! Friday, November 12, 2010
42. GCD API https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ Friday, November 12, 2010
43. https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ Threads can be complicated to program :( Friday, November 12, 2010
44. Global Interpreter Lock VM Friday, November 12, 2010
45. Slow :( Friday, November 12, 2010
46. Full concurrency via multiple processes :( Friday, November 12, 2010
47. Safe data :) Friday, November 12, 2010
48. https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ MacRuby doesn’t have a global VM lock Friday, November 12, 2010
49. https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ MacRuby VM Core VM VM Friday, November 12, 2010
50. Good but not good enough, threads are still a pain in the butt! Friday, November 12, 2010
51. https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ libdispatch Friday, November 12, 2010
52. Let GCD gure out how many threads to use! https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ require 'dispatch' job = Dispatch::Job.new { slow_operation } job.value # => “wait for the result” Friday, November 12, 2010
53. Asynchronous API https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ require 'dispatch' job = Dispatch::Job.new { slow_operation } job.value do |v| "asynchronous dispatch when done!" end Friday, November 12, 2010
54. Elegant wrapper API https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ require 'dispatch' job = Dispatch::Job.new job.add { slow_operation(a) } job.add { slow_operation(b) } job.add { slow_operation(c) } job.join job.values # =>[result_a, result_b, result_c] Friday, November 12, 2010
55. Dispatch Enumerable Parallel Iterations https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ require 'dispatch' geeks.p_each do |user| print find_pair(user) end Friday, November 12, 2010
56. https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ Remember: MacRuby doesn’t have a global VM lock! Friday, November 12, 2010
57. https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ Serial queues: lock free synchronization Friday, November 12, 2010
58. https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ require 'dispatch' job = Dispatch::Job.new @scores = job.synchronize Hash.new [user1, user2, user3].each do |user| job.add \ { @scores[user.name] = calculate(user) } end job.join @scores[user1.name] # => 1042 @scores[user2.name] # => 673 @scores[user3.name] # => 845 Friday, November 12, 2010
59. https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ require 'dispatch' job = Dispatch::Job.new @scores = job.synchronize Hash.new [user1, user2, user3].each do |user| job.add \ { @scores[user.name] = calculate(user) } end job.join @scores[user1.name] # => 1042 @scores[user2.name] # => 673 @scores[user3.name] # => 845 safe proxy object Friday, November 12, 2010
60. CONTROLTOWER http://github.com/MacRuby/ControlTower Friday, November 12, 2010
61. http://github.com/MacRuby/ControlTower Web server for Rack apps Friday, November 12, 2010
62. NEW DISPATCHER Friday, November 12, 2010
63. ONIGURUMA TO ICU Friday, November 12, 2010
64. MORE SOLID FOUNDATIONS Friday, November 12, 2010
65. SUPPORT FOR C BLOCKS Friday, November 12, 2010
66. SANDBOX Friday, November 12, 2010
67. $ macirb --simple-prompt >> require 'open-uri' => true >> begin >> Sandbox.no_internet.apply! >> open('http://www.macruby.org') >> rescue SystemCallError => exception >> puts exception >> end Operation not permitted - connect(2) => nil Friday, November 12, 2010
68. •Sandbox.pure_computation •Sandbox.no_internet •Sandbox.no_network •Sandbox.temporary_writes •Sandbox.no_writes 5 default pro les Friday, November 12, 2010
69. APP STORE Friday, November 12, 2010
70. Great exposure! Friday, November 12, 2010
71. Better user experience Friday, November 12, 2010
72. Reinvent desktop apps Friday, November 12, 2010
73. /Developer/Examples/Ruby/MacRuby/ What can you do with MacRuby?! Friday, November 12, 2010
74. Speech Recognizer Friday, November 12, 2010
75. Friday, November 12, 2010
76. CoreLocation Friday, November 12, 2010
77. Friday, November 12, 2010
78. Friday, November 12, 2010
79. Address Book.app Friday, November 12, 2010
80. Friday, November 12, 2010
81. String Tokenizer Friday, November 12, 2010
82. framework 'Foundation' class String def language CFStringTokenizerCopyBestStringLanguage(self, CFRangeMake(0, self.size)) end end Call a C function directly Friday, November 12, 2010
83. framework 'Foundation' class String def language CFStringTokenizerCopyBestStringLanguage(self, CFRangeMake(0, self.size)) end end ["Bonne année!", "Happy new year!", "¡Feliz año nuevo!", "Felice anno nuovo!", "ةﺪﻴﻌﺳ دﺎﻴﻋأ", "໌͚·͓ͯ͠ΊͰͱ͏͍͟͝·͢ɻ"].each do |msg| puts "#{msg} (#{msg.language})" end Friday, November 12, 2010
84. Bonne année! (fr) Happy new year! (en) ¡Feliz año nuevo! (es) Felice anno nuovo! (it) (ar) ةﺪﻴﻌﺳ دﺎﻴﻋأ ໌͚·͓ͯ͠ΊͰͱ͏͍͟͝·͢ɻ (ja) Friday, November 12, 2010
85. Bluetooth Hardware WebKit JS Bridge Friday, November 12, 2010
86. Friday, November 12, 2010
87. http://macruby.org download & dble click No conflict with your Rubies Friday, November 12, 2010
88. @merbist http://merbist.com http://macruby.labs.oreilly.com http://github.com/mattetti Friday, November 12, 2010