1 files changed, 0 insertions, 118 deletions
diff --git a/lib/mutex_m.rb b/lib/mutex_m.rb
deleted file mode 100644
index abd0fc6add..0000000000
--- a/lib/mutex_m.rb
+++ /dev/null
@@ -1,118 +0,0 @@
-# frozen_string_literal: false
-#
-#   mutex_m.rb -
-#       $Release Version: 3.0$
-#       $Revision: 1.7 $
-#       Original from mutex.rb
-#       by Keiju ISHITSUKA(keiju@ishitsuka.com)
-#       modified by matz
-#       patched by akira yamada
-#
-# --
-
-# = mutex_m.rb
-#
-# When 'mutex_m' is required, any object that extends or includes Mutex_m will
-# be treated like a Mutex.
-#
-# Start by requiring the standard library Mutex_m:
-#
-#   require "mutex_m.rb"
-#
-# From here you can extend an object with Mutex instance methods:
-#
-#   obj = Object.new
-#   obj.extend Mutex_m
-#
-# Or mixin Mutex_m into your module to your class inherit Mutex instance
-# methods --- remember to call super() in your class initialize method.
-#
-#   class Foo
-#     include Mutex_m
-#     def initialize
-#       # ...
-#       super()
-#     end
-#     # ...
-#   end
-#   obj = Foo.new
-#   # this obj can be handled like Mutex
-#
-module Mutex_m
-
-  VERSION = "0.1.1"
-  Ractor.make_shareable(VERSION) if defined?(Ractor)
-
-  def Mutex_m.define_aliases(cl) # :nodoc:
-    cl.module_eval %q{
-      alias locked? mu_locked?
-      alias lock mu_lock
-      alias unlock mu_unlock
-      alias try_lock mu_try_lock
-      alias synchronize mu_synchronize
-    }
-  end
-
-  def Mutex_m.append_features(cl) # :nodoc:
-    super
-    define_aliases(cl) unless cl.instance_of?(Module)
-  end
-
-  def Mutex_m.extend_object(obj) # :nodoc:
-    super
-    obj.mu_extended
-  end
-
-  def mu_extended # :nodoc:
-    unless (defined? locked? and
-            defined? lock and
-            defined? unlock and
-            defined? try_lock and
-            defined? synchronize)
-      Mutex_m.define_aliases(singleton_class)
-    end
-    mu_initialize
-  end
-
-  # See Thread::Mutex#synchronize
-  def mu_synchronize(&block)
-    @_mutex.synchronize(&block)
-  end
-
-  # See Thread::Mutex#locked?
-  def mu_locked?
-    @_mutex.locked?
-  end
-
-  # See Thread::Mutex#try_lock
-  def mu_try_lock
-    @_mutex.try_lock
-  end
-
-  # See Thread::Mutex#lock
-  def mu_lock
-    @_mutex.lock
-  end
-
-  # See Thread::Mutex#unlock
-  def mu_unlock
-    @_mutex.unlock
-  end
-
-  # See Thread::Mutex#sleep
-  def sleep(timeout = nil)
-    @_mutex.sleep(timeout)
-  end
-
-  private
-
-  def mu_initialize # :nodoc:
-    @_mutex = Thread::Mutex.new
-  end
-
-  def initialize(*args) # :nodoc:
-    mu_initialize
-    super
-  end
-  ruby2_keywords(:initialize) if respond_to?(:ruby2_keywords, true)
-end