find Mutex in instance_variables

find-mutex-in-instance_variables.rb

def find_mutex(v, rootname, level=1)
  prefix = "\t" * level
  found_name = nil
  puts prefix + "now find " + rootname
  v.instance_variable_names.each {|name|
    puts prefix + "find " + rootname + " > " + name
    namev = v.instance_variable_get(name);
    puts prefix + "find " + rootname + " > " + name + " class : " + namev.class.to_s

    found_name = if(namev.class == Mutex)
      rootname + " > " + name
    else
      find_mutex(namev, rootname + " > " + name, level + 1)
    end
    break unless found_name.nil?
  }
  return found_name
end

find_mutex(aa, "root", 1)