Logger::LogDevice

 
               # File logger.rb, line 668
def initialize(log = nil, shift_age: nil, shift_size: nil, shift_period_suffix: nil)
  @dev = @filename = @shift_age = @shift_size = @shift_period_suffix = nil
  mon_initialize
  set_dev(log)
  if @filename
    @shift_age = shift_age || 7
    @shift_size = shift_size || 1048576
    @shift_period_suffix = shift_period_suffix || '%Y%m%d'

    unless @shift_age.is_a?(Integer)
      base_time = @dev.respond_to?(:stat) ? @dev.stat.mtime : Time.now
      @next_rotate_time = next_rotate_time(base_time, @shift_age)
    end
  end
end
            

 
               # File logger.rb, line 705
def close
  begin
    synchronize do
      @dev.close rescue nil
    end
  rescue Exception
    @dev.close rescue nil
  end
end
            

 
               # File logger.rb, line 715
def reopen(log = nil)
  # reopen the same filename if no argument, do nothing for IO
  log ||= @filename if @filename
  if log
    synchronize do
      if @filename and @dev
        @dev.close rescue nil # close only file opened by Logger
        @filename = nil
      end
      set_dev(log)
    end
  end
  self
end
            

 
               # File logger.rb, line 684
def write(message)
  begin
    synchronize do
      if @shift_age and @dev.respond_to?(:stat)
        begin
          check_shift_log
        rescue
          warn("log shifting failed. #{$!}")
        end
      end
      begin
        @dev.write(message)
      rescue
        warn("log writing failed. #{$!}")
      end
    end
  rescue Exception => ignored
    warn("log writing failed. #{ignored}")
  end
end