# File merb-core/lib/merb-core/rack/middleware/profiler.rb, line 12
12:       def initialize(app, types = [RubyProf::ALLOCATIONS, RubyProf::PROCESS_TIME])
13:         super(app)
14:         @types = types
15:       end

    # File merb-core/lib/merb-core/rack/middleware/profiler.rb, line 18
18:       def call(env)
19:         measure_names = { RubyProf::ALLOCATIONS => 'allocations', 
20:           RubyProf::PROCESS_TIME => 'time', RubyProf::MEMORY => "memory" }
21: 
22:         ret = nil
23: 
24:         GC.disable
25:         @types.each do |type|
26:           next if type.nil?
27:           
28:           if GC.respond_to?(:enable_stats)
29:             GC.enable_stats || GC.clear_stats
30:           end
31: 
32:           RubyProf.measure_mode = type
33:           RubyProf.start
34:           100.times do
35:             ret = super
36:           end
37:           result = RubyProf.stop
38:           printer = RubyProf::CallTreePrinter.new(result)
39:           path = "merb_profile_results" / env["PATH_INFO"]
40:           FileUtils.mkdir_p(path)
41:           printer.print(
42:             File.open(
43:               "#{path}/callgrind.out.#{measure_names[RubyProf::measure_mode]}",     
44:               'w'))
45: 
46:           GC.disable_stats if GC.respond_to?(:disable_stats)
47:         end
48:         GC.enable
49:         ret
50:       end