module RubyProf

def self.figure_measure_mode
  case ENV["RUBY_PROF_MEASURE_MODE"]
  when "wall", "wall_time"
    RubyProf.measure_mode = RubyProf::WALL_TIME
  when "allocations"
    RubyProf.measure_mode = RubyProf::ALLOCATIONS
  when "memory"
    RubyProf.measure_mode = RubyProf::MEMORY
  when "process", "process_time"
    RubyProf.measure_mode = RubyProf::PROCESS_TIME
  else
    # the default is defined in the measure_mode reader

  end
end