Gecko [ vacationseastafrica.com ]

Name	Size	Permission	Date
bigdecimal	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
cgi	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
did_you_mean	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
digest	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
erb	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
error_highlight	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
forwardable	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
io	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
json	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
net	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
objspace	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
open3	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
openssl	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
optparse	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
prism	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
psych	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
random	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
ripper	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
set	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
strscan	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
syntax_suggest	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
unicode_normalize	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
uri	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
vendor_ruby	[ DIR ]	drwxr-xr-x	2026-04-24 16:07
yaml	[ DIR ]	drwxr-xr-x	2026-05-14 08:42
English.rb	5.96 KB	-rw-r--r--	2026-04-24 16:08
bundled_gems.rb	8.41 KB	-rw-r--r--	2026-04-24 16:08
cgi.rb	311 B	-rw-r--r--	2026-04-24 16:08
coverage.rb	517 B	-rw-r--r--	2026-04-24 16:08
date.rb	1.17 KB	-rw-r--r--	2026-04-24 16:08
delegate.rb	11.96 KB	-rw-r--r--	2026-04-24 16:08
did_you_mean.rb	4.51 KB	-rw-r--r--	2026-04-24 16:08
digest.rb	3.3 KB	-rw-r--r--	2026-04-24 16:08
erb.rb	32.57 KB	-rw-r--r--	2026-04-24 16:08
error_highlight.rb	84 B	-rw-r--r--	2026-04-24 16:08
expect.rb	2.19 KB	-rw-r--r--	2026-04-24 16:08
fileutils.rb	79.18 KB	-rw-r--r--	2026-04-24 16:08
find.rb	2.54 KB	-rw-r--r--	2026-04-24 16:08
forwardable.rb	8.81 KB	-rw-r--r--	2026-04-24 16:08
ipaddr.rb	22.86 KB	-rw-r--r--	2026-04-24 16:08
json.rb	21.45 KB	-rw-r--r--	2026-04-24 16:08
mkmf.rb	93.16 KB	-rw-r--r--	2026-04-24 16:08
monitor.rb	6.97 KB	-rw-r--r--	2026-04-24 16:08
objspace.rb	4.14 KB	-rw-r--r--	2026-04-24 16:08
open-uri.rb	28.58 KB	-rw-r--r--	2026-04-24 16:08
open3.rb	47.51 KB	-rw-r--r--	2026-04-24 16:08
openssl.rb	1.24 KB	-rw-r--r--	2026-04-24 16:08
optionparser.rb	59 B	-rw-r--r--	2026-04-24 16:08
optparse.rb	65.44 KB	-rw-r--r--	2026-04-24 16:08
pathname.rb	2 KB	-rw-r--r--	2026-04-24 16:08
pp.rb	19.21 KB	-rw-r--r--	2026-04-24 16:08
prettyprint.rb	15.95 KB	-rw-r--r--	2026-04-24 16:08
prism.rb	3.74 KB	-rw-r--r--	2026-04-24 16:08
psych.rb	26.05 KB	-rw-r--r--	2026-04-24 16:08
resolv.rb	88.39 KB	-rw-r--r--	2026-04-24 16:08
ripper.rb	2.44 KB	-rw-r--r--	2026-04-24 16:08
securerandom.rb	2.28 KB	-rw-r--r--	2026-04-24 16:08
shellwords.rb	7.53 KB	-rw-r--r--	2026-04-24 16:08
singleton.rb	5.59 KB	-rw-r--r--	2026-04-24 16:08
socket.rb	61.26 KB	-rw-r--r--	2026-04-24 16:08
syntax_suggest.rb	74 B	-rw-r--r--	2026-04-24 16:08
tempfile.rb	20.7 KB	-rw-r--r--	2026-04-24 16:08
time.rb	24.01 KB	-rw-r--r--	2026-04-24 16:08
timeout.rb	10.48 KB	-rw-r--r--	2026-04-24 16:08
tmpdir.rb	5.62 KB	-rw-r--r--	2026-04-24 16:08
tsort.rb	14.36 KB	-rw-r--r--	2026-04-24 16:08
un.rb	11.17 KB	-rw-r--r--	2026-04-24 16:08
uri.rb	3.09 KB	-rw-r--r--	2026-04-24 16:08
weakref.rb	1.39 KB	-rw-r--r--	2026-04-24 16:08
yaml.rb	2.16 KB	-rw-r--r--	2026-04-24 16:08

Rename

# frozen_string_literal: true

# The Singleton module implements the Singleton pattern.
#
# == Usage
#
# To use Singleton, include the module in your class.
#
#    class Klass
#       include Singleton
#       # ...
#    end
#
# This ensures that only one instance of Klass can be created.
#
#      a,b = Klass.instance, Klass.instance
#
#      a == b
#      # => true
#
#      Klass.new
#      # => NoMethodError - new is private ...
#
# The instance is created at upon the first call of Klass.instance().
#
#      class OtherKlass
#        include Singleton
#        # ...
#      end
#
#      ObjectSpace.each_object(OtherKlass){}
#      # => 0
#
#      OtherKlass.instance
#      ObjectSpace.each_object(OtherKlass){}
#      # => 1
#
#
# This behavior is preserved under inheritance and cloning.
#
# == Implementation
#
# This above is achieved by:
#
# *  Making Klass.new and Klass.allocate private.
#
# *  Overriding Klass.inherited(sub_klass) and Klass.clone() to ensure that the
#    Singleton properties are kept when inherited and cloned.
#
# *  Providing the Klass.instance() method that returns the same object each
#    time it is called.
#
# *  Overriding Klass._load(str) to call Klass.instance().
#
# *  Overriding Klass#clone and Klass#dup to raise TypeErrors to prevent
#    cloning or duping.
#
# == Singleton and Marshal
#
# By default Singleton's #_dump(depth) returns the empty string. Marshalling by
# default will strip state information, e.g. instance variables from the instance.
# Classes using Singleton can provide custom _load(str) and _dump(depth) methods
# to retain some of the previous state of the instance.
#
#    require 'singleton'
#
#    class Example
#      include Singleton
#      attr_accessor :keep, :strip
#      def _dump(depth)
#        # this strips the @strip information from the instance
#        Marshal.dump(@keep, depth)
#      end
#
#      def self._load(str)
#        instance.keep = Marshal.load(str)
#        instance
#      end
#    end
#
#    a = Example.instance
#    a.keep = "keep this"
#    a.strip = "get rid of this"
#
#    stored_state = Marshal.dump(a)
#
#    a.keep = nil
#    a.strip = nil
#    b = Marshal.load(stored_state)
#    p a == b  #  => true
#    p a.keep  #  => "keep this"
#    p a.strip #  => nil
#
module Singleton
  # The version string
  VERSION = "0.3.0"

module SingletonInstanceMethods # :nodoc:
    # Raises a TypeError to prevent cloning.
    def clone
      raise TypeError, "can't clone instance of singleton #{self.class}"
    end

# Raises a TypeError to prevent duping.
    def dup
      raise TypeError, "can't dup instance of singleton #{self.class}"
    end

# By default, do not retain any state when marshalling.
    def _dump(depth = -1)
      ''
    end
  end
  include SingletonInstanceMethods

module SingletonClassMethods # :nodoc:

def clone # :nodoc:
      Singleton.__init__(super)
    end

# By default calls instance(). Override to retain singleton state.
    def _load(str)
      instance
    end

def instance # :nodoc:
      @singleton__instance__ || @singleton__mutex__.synchronize { @singleton__instance__ ||= new }
    end

private

def inherited(sub_klass)
      super
      Singleton.__init__(sub_klass)
    end

def set_instance(val)
      @singleton__instance__ = val
    end

def set_mutex(val)
      @singleton__mutex__ = val
    end
  end

def self.module_with_class_methods # :nodoc:
    SingletonClassMethods
  end

module SingletonClassProperties # :nodoc:

def self.included(c)
      # extending an object with Singleton is a bad idea
      c.undef_method :extend_object
    end

def self.extended(c)
      # extending an object with Singleton is a bad idea
      c.singleton_class.send(:undef_method, :extend_object)
    end

def __init__(klass) # :nodoc:
      klass.instance_eval {
        set_instance(nil)
        set_mutex(Thread::Mutex.new)
      }
      klass
    end

private

def append_features(mod)
      #  help out people counting on transitive mixins
      unless mod.instance_of?(Class)
        raise TypeError, "Inclusion of the OO-Singleton module in module #{mod}"
      end
      super
    end

def included(klass)
      super
      klass.private_class_method :new, :allocate
      klass.extend module_with_class_methods
      Singleton.__init__(klass)
    end
  end
  extend SingletonClassProperties

##
  # :singleton-method: _load
  #  By default calls instance(). Override to retain singleton state.

##
  # :singleton-method: instance
  #  Returns the singleton instance.
end

if defined?(Ractor)
  module RactorLocalSingleton # :nodoc:
    include Singleton::SingletonInstanceMethods

module RactorLocalSingletonClassMethods # :nodoc:
      include Singleton::SingletonClassMethods
      def instance
        set_mutex(Thread::Mutex.new) if Ractor.current[mutex_key].nil?
        return Ractor.current[instance_key] if Ractor.current[instance_key]
        Ractor.current[mutex_key].synchronize {
          return Ractor.current[instance_key] if Ractor.current[instance_key]
          set_instance(new())
        }
        Ractor.current[instance_key]
      end

private

def instance_key
        :"__RactorLocalSingleton_instance_with_class_id_#{object_id}__"
      end

def mutex_key
        :"__RactorLocalSingleton_mutex_with_class_id_#{object_id}__"
      end

def set_instance(val)
        Ractor.current[instance_key] = val
      end

def set_mutex(val)
        Ractor.current[mutex_key] = val
      end
    end

def self.module_with_class_methods
      RactorLocalSingletonClassMethods
    end

extend Singleton::SingletonClassProperties
  end
end