heapdump

class DebugController < ApplicationController
  # Many Thanks to Jens Himmelreich for the Idea!
  def heapdump
    living_objects = Hash.new 0
    file_path = timestamp_filepath
    ObjectSpace.each_object do |object|
      living_objects[object.class] += 1
    end
    sorted_array = living_objects.sort{|a,b| b[1] <=> a[1] }
    File.open(file_path, 'w') do |file|
      sorted_array.each do |pair|
        file.puts "#{pair[0]} -> #{pair[1]}"
      end
    end
    render :file => file_path
  end


  private

  def timestamp
    Time.now.strftime("%Y%m%d-%H:%I:%S")
  end

  def timestamp_filepath
    "#{RAILS_ROOT}/log/heapdump#{timestamp}.log"
  end

end