# File lib/railsbench/perf_utils.rb, line 35
def determine_rails_root_or_die!(msg=nil)
  unless ENV['RAILS_ROOT']
    if File.directory?("config") && File.exists?("config/environment.rb")
      ENV['RAILS_ROOT'] = File.expand_path(".")
    else
      die(msg || "#{File.basename $PROGRAM_NAME}: $RAILS_ROOT not set and could not be configured automatically")
    end
  end
end