initial version

.gitignore

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+.repl_history
+build
+tags
+app/pixate_code.rb
+resources/*.nib
+resources/*.momd
+resources/*.storyboardc
+.DS_Store
+nbproject
+.redcar
+#*#
+*~
+*.sw[po]
+.eprj
+.sass-cache
+.idea
+.dat*.*

Gemfile

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+source 'https://rubygems.org'
+
+gem 'rake'
+# Add your dependencies here:
+gem 'everyday-menu', '>= 1.3.4'
+gem 'ib'

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    activesupport (3.2.18)
+      i18n (~> 0.6, >= 0.6.4)
+      multi_json (~> 1.0)
+    colored (1.2)
+    everyday-menu (1.3.4)
+      rm-digest
+    i18n (0.6.11)
+    ib (0.4.7)
+      thor (~> 0.15.4)
+      tilt (~> 1.4.1)
+      xcodeproj (~> 0.16.0)
+    multi_json (1.10.1)
+    rake (10.3.2)
+    rm-digest (0.0.2)
+    thor (0.15.4)
+    tilt (1.4.1)
+    xcodeproj (0.16.1)
+      activesupport (~> 3.0)
+      colored (~> 1.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  everyday-menu (>= 1.3.4)
+  ib
+  rake

Rakefile

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+# -*- coding: utf-8 -*-
+$:.unshift('/Library/RubyMotion/lib')
+require 'motion/project/template/osx'
+
+begin
+  require 'bundler'
+  Bundler.require
+rescue LoadError
+# ignored
+end
+
+Motion::Project::App.setup do |app|
+  app.icon                           = 'Icon.icns'
+  app.info_plist['CFBundleIconFile'] = 'Icon.icns'
+  app.name                           = 'MemoryTamer'
+  app.version                        = '0.3'
+  app.identifier                     = 'us.myepg.MemoryTamer'
+  app.info_plist['NSUIElement']      = 1
+  app.codesign_certificate           = 'Developer ID Application: Eric Henderson (SKWXXEM822)'
+end

app/app_delegate.rb

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+class AppDelegate
+  attr_accessor :free_display_title
+
+  def applicationDidFinishLaunching(notification)
+    # buildMenu
+    # buildWindow
+    @freeing = false
+    MainMenu.build!
+    MainMenu[:statusbar].subscribe(:status_free) { |_, _|
+      Thread.start { free_mem_default(get_free_mem) }
+    }.canExecuteBlock { |_| !@freeing }
+    MainMenu[:statusbar].subscribe(:status_quit) { |_, _|
+      NSApp.terminate
+    }
+    NSUserNotificationCenter.defaultUserNotificationCenter.setDelegate(self)
+    @statusItem = MainMenu[:statusbar].statusItem
+    pth         = File.expand_path('~/prefs.mtprefs')
+    @mem        = 1024
+    @pressure   = 'warn'
+    unless File.exist?(pth)
+      File.open(pth, mode_string='w+') { |io| io.puts('1024|warn') }
+    end
+    begin
+      if File.exist?(pth)
+        fc        = IO.read(pth).chomp
+        pts       = fc.split(/\|/)
+        @pressure = pts[1] if %w(normal warn critical).include?(pts[1].chomp)
+        @mem      = pts[0].chomp.to_i
+      end
+    rescue
+      # ignored
+    end
+    @dfm = @mem * 1024**2
+    puts("Starting up with memory = #{@dfm}; pressure = #{@pressure}")
+    Thread.start {
+      @last_free = NSDate.date - 120
+      loop do
+        cfm = get_free_mem
+        @statusItem.setTitle(format_bytes(cfm))
+        # @statusItem.didChangeValueForKey('title')
+        # @free_display.containedObject.setTitle("#{'%.1f' % (cfm / 1024**2)} MB free")
+        # @free_display.containedObject.didChangeValueForKey('title')
+        if cfm <= @dfm && (NSDate.date - @last_free) >= 60 && !@freeing
+          Thread.start { free_mem_default(cfm) }
+        end
+        sleep(2)
+      end
+    }
+  end
+
+  def free_mem_default(cfm)
+    @freeing = true
+    notify 'Beginning memory freeing'
+    free_mem(@pressure)
+    nfm = get_free_mem
+    notify "Finished freeing #{format_bytes(nfm - cfm)}"
+    @freeing = false
+    @last_free = NSDate.date
+  end
+
+  def format_bytes(bytes, show_raw = false)
+    lg   = (Math.log(bytes)/Math.log(1024)).floor.to_f
+    unit = %w(B KB MB GB TB)[lg]
+    "#{'%.2f' % (bytes.to_f / 1024.0**lg)} #{unit}#{show_raw ? " (#{bytes} B)" : ''}"
+  end
+
+  def get_free_mem
+    vm_stat = `vm_stat`
+
+    vm_stat = vm_stat.split("\n")
+
+    page_size = vm_stat[0].match(/(\d+) bytes/)[1].to_i
+
+    pages_free = vm_stat[1].match(/(\d+)/)[1].to_i
+    #pages_inactive = vm_stat[3].match(/(\d+)/)[1].to_i
+
+    page_size*pages_free #+ page_size*pages_inactive
+  end
+
+  def get_memory_pressure
+    `/usr/sbin/sysctl kern.memorystatus_vm_pressure_level`.chomp.to_i
+  end
+
+  def free_mem(pressure)
+    cmp = get_memory_pressure
+    if cmp >= 4
+      notify 'Memory Pressure too high! Running not a good idea.'
+      return
+    end
+    dmp      = pressure == 'normal' ? 1 : (pressure == 'warn' ? 2 : 4)
+    pressure = cmp == 1 ? 'warn' : 'critical' if cmp >= dmp
+    IO.popen("memory_pressure -l #{pressure}") { |pipe|
+      pipe.sync = true
+      pipe.each { |l|
+        puts l
+        # if l.include?('CMD: Allocating pages')
+        if l.include?('Stabilizing at')
+          Process.kill 'SIGINT', pipe.pid
+          break
+        end
+      }
+    }
+  end
+
+  def notify(msg)
+    notification                 = NSUserNotification.alloc.init
+    notification.title           = 'MemoryTamer'
+    notification.informativeText = msg
+    notification.soundName       = NSUserNotificationDefaultSoundName
+    NSUserNotificationCenter.defaultUserNotificationCenter.scheduleNotification(notification)
+  end
+
+  # def buildWindow
+  #   @mainWindow = NSWindow.alloc.initWithContentRect([[240, 180], [480, 360]],
+  #     styleMask: NSTitledWindowMask|NSClosableWindowMask|NSMiniaturizableWindowMask|NSResizableWindowMask,
+  #     backing: NSBackingStoreBuffered,
+  #     defer: false)
+  #   @mainWindow.title = NSBundle.mainBundle.infoDictionary['CFBundleName']
+  #   @mainWindow.orderFrontRegardless
+  # end
+end

app/menu.rb

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+class MainMenu
+  extend EverydayMenu::MenuBuilder
+
+  def self.def_items
+    menuItem :hide_others, 'Hide Others', preset: :hide_others
+    menuItem :show_all, 'Show All', preset: :show_all
+    menuItem :quit, 'Quit'
+
+    menuItem :services_item, 'Services', preset: :services
+
+    menuItem :status_free, 'Free memory now'
+    menuItem :status_preferences, 'Preferences'
+    menuItem :status_quit, 'Quit', preset: :quit
+  end
+
+  def self.def_menus
+    mainMenu(:app, 'MemoryTamer') {
+      hide_others
+      show_all
+      ___
+      services_item
+      ___
+      quit
+    }
+
+    statusbarMenu(:statusbar, '', status_item_icon: NSImage.imageNamed('Status'), status_item_length: NSVariableStatusItemLength) {
+      status_free
+      ___
+      status_preferences
+      ___
+      status_quit
+    }
+  end
+
+  def_menus
+  def_items
+end

resources/Credits.rtf

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+{\rtf0\ansi{\fonttbl\f0\fswiss Helvetica;}
+{\colortbl;\red255\green255\blue255;}
+\paperw9840\paperh8400
+\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural
+
+\f0\b\fs24 \cf0 Engineering:
+\b0 \
+	Some people\
+\
+
+\b Human Interface Design:
+\b0 \
+	Some other people\
+\
+
+\b Testing:
+\b0 \
+	Hopefully not nobody\
+\
+
+\b Documentation:
+\b0 \
+	Whoever\
+\
+
+\b With special thanks to:
+\b0 \
+	Mom\
+}

spec/main_spec.rb

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+describe "Application 'MemoryTamer'" do
+  before do
+    @app = NSApplication.sharedApplication
+  end
+
+  it "has one window" do
+    @app.windows.size.should == 1
+  end
+end