lib/dtas.rb in dtas-0.11.0 vs lib/dtas.rb in dtas-0.12.0

@@ -1,7 +1,24 @@
 # Copyright (C) 2013-2015 all contributors <[e-mail]>
 # License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
 module DTAS # :nodoc:
+  # try to use the monotonic clock in Ruby >= 2.1, it is immune to clock
+  # offset adjustments and generates less garbage (Float vs Time object)
+  begin
+    ::Process.clock_gettime(::Process::CLOCK_MONOTONIC)
+    def self.now
+      ::Process.clock_gettime(::Process::CLOCK_MONOTONIC)
+    end
+  rescue NameError, NoMethodError
+    def self.now # Ruby <= 2.0
+      Time.now.to_f
+    end
+  end
+
+  @null = nil
+  def self.null
+    @null ||= File.open('/dev/null', 'r+')
+  end
 end
 
 require_relative 'dtas/compat_onenine'
 require_relative 'dtas/spawn_fix'