Removed confusing parameter from Concurrent.monotonic_time.

Author: jdantonio

lib/concurrent/utility/monotonic_time.rb

@@ -7,13 +7,13 @@ module Concurrent
 
     if defined?(Process::CLOCK_MONOTONIC)
       # @!visibility private
-      def get_time(since = 0.0)
-        Process.clock_gettime(Process::CLOCK_MONOTONIC) - since.to_f
+      def get_time
+        Process.clock_gettime(Process::CLOCK_MONOTONIC)
       end
     elsif RUBY_PLATFORM == 'java'
       # @!visibility private
-      def get_time(since = 0.0)
-        (java.lang.System.nanoTime() / 1_000_000_000.0) - since.to_f
+      def get_time
+        java.lang.System.nanoTime() / 1_000_000_000.0
       end
     else
 
@@ -27,7 +27,7 @@ def initialize
       end
 
       # @!visibility private
-      def get_time(since = 0.0)
+      def get_time
         @mutex.synchronize {
           @correction ||= 0 # compensating any back time shifts
           now = Time.now.to_f
@@ -38,26 +38,21 @@ def get_time(since = 0.0)
             @correction += @last_time - corrected_now + 0.000_001
             @last_time = @correction + now
           end
-        } - since.to_f
+        }
       end
     end
   }.new
 
   # @!macro [attach] monotonic_get_time
   # 
   #   Returns the current time a tracked by the application monotonic clock.
-  #   When no `since` time is given the return value will bet he current time.
-  #   When an `since` value is given the return value will be the monotonic time
-  #   interval which has been passed since the `since` time.
   #
-  #   @param [Float] since the monotonic time from which to calculate
-  #     the time interval
   #   @return [Float] The current monotonic time when `since` not given else
   #     the elapsed monotonic time between `since` and the current time
   #
   #   @!macro monotonic_clock_warning
-  def monotonic_time(since = 0.0)
-    GLOBAL_MONOTONIC_CLOCK.get_time(since)
+  def monotonic_time
+    GLOBAL_MONOTONIC_CLOCK.get_time
   end
   module_function :monotonic_time
 end