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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

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