module RubyProf

def self.measure_mode

* RubyProf::MEMORY
* RubyProf::ALLOCATIONS
* RubyProf::PROCESS_TIME
* RubyProf::WALL_TIME

Returns what ruby-prof is measuring. Valid values include:

measure_mode -> measure_mode
call-seq: 
def self.measure_mode
  @measure_mode ||= RubyProf::WALL_TIME
end