RAILS_ROOT = File.dirname(__FILE__)+'/../'
class MemoryProfiler
  def initialize(method_name)
    @object_ids = []
    @leaked_objects = []
    @methodlog = "#{RAILS_ROOT}/log/#{method_name}_profile.log"
  end

  def start
    GC.start
    ObjectSpace.each_object do |o|
      @object_ids << o.object_id
    end
  end

  def end
    GC.start
    ObjectSpace.each_object do |o|
      @leaked_objects << o.object_id
    end


    @leaked_objects = @leaked_objects - @object_ids

    puts "Oops..You've got #{@leaked_objects.size} screwed up objects!!" unless @leaked_objects.empty?

    File.open(@methodlog,'w') do |f|
      @leaked_objects.each do |o|
        begin
          f.puts ObjectSpace._id2ref(o).inspect
        rescue Exception => e
          puts "Something wrong happened while processing object #{o}"
        end
      end
    end
  end
end

module LeakSpector
  def self.included(base)
    base.extend LeakSpectorClassMethods
  end

  module LeakSpectorClassMethods

    def leakspect(method)
      define_method(:"#{method.to_s}_with_inspection") do |*args|
        mp = MemoryProfiler.new(method.to_s)
        mp.start
        self.send "#{method.to_s}_without_inspection", *args
        mp.end
      end
      #alias_method_chain method, :inspection
      alias_method :"#{method.to_s}_without_inspection", method
      alias_method method, :"#{method.to_s}_with_inspection"
    end
  end
end

class << self
  include LeakSpector

  def leaker
    y = "hello"
  end
  leakspect :leaker
end

leaker