RubyConf 2010 - MacRuby: Why and How

by Matt Aimonetti

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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

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ABOUT ME Friday, November 12, 2010

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Friday, November 12, 2010

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Hacker Friday, November 12, 2010

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MacRuby Friday, November 12, 2010

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http://macruby.labs.oreilly.com/ Friday, November 12, 2010

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MACRUBY A p p l e ’ s R u b y Friday, November 12, 2010

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MacRuby YARV Parser GC Runtime Stdlib Builtin classes Ruby 1.9 Friday, November 12, 2010

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MacRuby LLVM/Roxor Parser Stdlib AOT JIT Obj-C Runtime libobjc libauto Builtin Classes CoreFoundation MacRuby Friday, November 12, 2010

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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

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MacRuby LLVM Friday, November 12, 2010

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JIT Compilation MacRuby Friday, November 12, 2010

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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

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AOT Compilation MacRuby Friday, November 12, 2010

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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

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NO GIL No Global Interpreter Lock Friday, November 12, 2010

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GC Thread Thread VM VM VM Core Friday, November 12, 2010

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MULTI-THREADED GENERATIONAL GC Friday, November 12, 2010

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NATIVE ACCESS TO COCOA Friday, November 12, 2010

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WHEN . TO USE MACRUBY? NOT Friday, November 12, 2010

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YOU DON’T HAVE A MAC Friday, November 12, 2010

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LINUX HOSTING Friday, November 12, 2010

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YOU DON’T WANT TO LEARN Friday, November 12, 2010

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WHAT’S NEW? Friday, November 12, 2010

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COCOA DEV IS STABLE Friday, November 12, 2010

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DNA Sequencing by Hampton Catlin Friday, November 12, 2010

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AOT COMPILATION Friday, November 12, 2010

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MacRuby: De nitive Guide Hello World Example Friday, November 12, 2010

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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

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$ 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

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w00t!! Friday, November 12, 2010

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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

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DEBUGGER Friday, November 12, 2010

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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

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$ 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

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$ 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

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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

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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

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cylon_detector.rb:8> p character => "Six" cylon_detector.rb:8> p cylon?(character) => false Bug con rmed :( Friday, November 12, 2010

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cylon_detector.rb:8> p def cylon?(character) character == 'Six' end ZOMG live bug xing! Friday, November 12, 2010

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cylon_detector.rb:8> c Six is a Cylon! Program exited. w00t!! Friday, November 12, 2010

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GCD API https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ Friday, November 12, 2010

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https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ Threads can be complicated to program :( Friday, November 12, 2010

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Global Interpreter Lock VM Friday, November 12, 2010

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Slow :( Friday, November 12, 2010

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Full concurrency via multiple processes :( Friday, November 12, 2010

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Safe data :) Friday, November 12, 2010

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https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ MacRuby doesn’t have a global VM lock Friday, November 12, 2010

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https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ MacRuby VM Core VM VM Friday, November 12, 2010

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Good but not good enough, threads are still a pain in the butt! Friday, November 12, 2010

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https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ libdispatch Friday, November 12, 2010

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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

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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

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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

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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

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https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ Remember: MacRuby doesn’t have a global VM lock! Friday, November 12, 2010

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https://github.com/MacRuby/MacRuby/tree/trunk/lib/dispatch/ Serial queues: lock free synchronization Friday, November 12, 2010

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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

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CONTROLTOWER http://github.com/MacRuby/ControlTower Friday, November 12, 2010

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http://github.com/MacRuby/ControlTower Web server for Rack apps Friday, November 12, 2010

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NEW DISPATCHER Friday, November 12, 2010

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ONIGURUMA TO ICU Friday, November 12, 2010

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MORE SOLID FOUNDATIONS Friday, November 12, 2010

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SUPPORT FOR C BLOCKS Friday, November 12, 2010

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SANDBOX Friday, November 12, 2010

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$ 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

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•Sandbox.pure_computation •Sandbox.no_internet •Sandbox.no_network •Sandbox.temporary_writes •Sandbox.no_writes 5 default pro les Friday, November 12, 2010

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APP STORE Friday, November 12, 2010

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Great exposure! Friday, November 12, 2010

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Better user experience Friday, November 12, 2010

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Reinvent desktop apps Friday, November 12, 2010

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/Developer/Examples/Ruby/MacRuby/ What can you do with MacRuby?! Friday, November 12, 2010

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Speech Recognizer Friday, November 12, 2010

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CoreLocation Friday, November 12, 2010

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Address Book.app Friday, November 12, 2010

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String Tokenizer Friday, November 12, 2010

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framework 'Foundation' class String def language CFStringTokenizerCopyBestStringLanguage(self, CFRangeMake(0, self.size)) end end Call a C function directly Friday, November 12, 2010

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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

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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

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Bluetooth Hardware WebKit JS Bridge Friday, November 12, 2010

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http://macruby.org download & dble click No conﬂict with your Rubies Friday, November 12, 2010

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@merbist http://merbist.com http://macruby.labs.oreilly.com http://github.com/mattetti Friday, November 12, 2010