class Rack::RubyProf

def call(env)
  request = Rack::Request.new(env)
  if should_profile?(request.path)
    begin
      result = nil
      profile = ::RubyProf::Profile.profile(**profiling_options) do
        result = @app.call(env)
      end
      if @merge_fibers
        profile.merge!
      end
      path = request.path.gsub('/', '-')
      path.slice!(0)
      print(profile, path)
      result
    end
  else
    @app.call(env)
  end
end