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Name	Size	Permission	Date
acl.rb	4.36 KB	-rw-r--r--	2016-11-21 08:58
drb.rb	56.28 KB	-rw-r--r--	2016-11-21 08:58
eq.rb	275 B	-rw-r--r--	2016-11-21 08:58
extserv.rb	831 B	-rw-r--r--	2016-11-21 08:58
extservm.rb	1.73 KB	-rw-r--r--	2016-11-21 08:58
gw.rb	3 KB	-rw-r--r--	2016-11-21 08:58
invokemethod.rb	777 B	-rw-r--r--	2016-11-21 08:58
observer.rb	667 B	-rw-r--r--	2016-11-21 08:58
ssl.rb	11.58 KB	-rw-r--r--	2016-11-21 08:58
timeridconv.rb	2.05 KB	-rw-r--r--	2016-11-21 08:58
unix.rb	2.75 KB	-rw-r--r--	2016-11-21 08:58

Rename

# frozen_string_literal: false
require 'drb/drb'
require 'monitor'

module DRb

# Timer id conversion keeps objects alive for a certain amount of time after
  # their last access.  The default time period is 600 seconds and can be
  # changed upon initialization.
  #
  # To use TimerIdConv:
  #
  #  DRb.install_id_conv TimerIdConv.new 60 # one minute

class TimerIdConv < DRbIdConv
    class TimerHolder2 # :nodoc:
      include MonitorMixin

class InvalidIndexError < RuntimeError; end

def initialize(keeping=600)
        super()
        @sentinel = Object.new
        @gc = {}
        @renew = {}
        @keeping = keeping
        @expires = Time.now + @keeping
      end

def add(obj)
        synchronize do
          rotate
          key = obj.__id__
          @renew[key] = obj
          return key
        end
      end

def fetch(key, dv=@sentinel)
        synchronize do
          rotate
          obj = peek(key)
          if obj == @sentinel
            return dv unless dv == @sentinel
            raise InvalidIndexError
          end
          @renew[key] = obj # KeepIt
          return obj
        end
      end

private
      def peek(key)
        synchronize do
          return @renew.fetch(key) { @gc.fetch(key, @sentinel) }
        end
      end

def rotate
        synchronize do
          return if @expires > Time.now
          @gc = @renew      # GCed
          @renew = {}
          @expires = Time.now + @keeping
        end
      end

def keeper
        Thread.new do
          loop do
            rotate
            sleep(@keeping)
          end
        end
      end
    end

# Creates a new TimerIdConv which will hold objects for +keeping+ seconds.
    def initialize(keeping=600)
      @holder = TimerHolder2.new(keeping)
    end

def to_obj(ref) # :nodoc:
      return super if ref.nil?
      @holder.fetch(ref)
    rescue TimerHolder2::InvalidIndexError
      raise "invalid reference"
    end

def to_id(obj) # :nodoc:
      return @holder.add(obj)
    end
  end
end

# DRb.install_id_conv(TimerIdConv.new)