Renamed global_timer_pool to global_timer_set to be more consistent.

lib/concurrent/configuration.rb

@@ -23,7 +23,7 @@ def self.configure
       # initialize the global thread pools if necessary
       configuration.global_task_pool
       configuration.global_operation_pool
-      configuration.global_timer_pool
+      configuration.global_timer_set
     end
   end
 
@@ -66,8 +66,8 @@ def global_operation_pool
     # @return [ThreadPoolExecutor] the thread pool
     #
     # @see Concurrent::timer
-    def global_timer_pool
-      @global_timer_pool ||= Concurrent::TimerSet.new
+    def global_timer_set
+      @global_timer_set ||= Concurrent::TimerSet.new
     end
 
     # Global thread pool optimized for short *tasks*.
@@ -134,6 +134,7 @@ def self.finalize_executor(executor)
 
   # set exit hook to shutdown global thread pools
   at_exit do
+    self.finalize_executor(self.configuration.global_timer_set)
     self.finalize_executor(self.configuration.global_task_pool)
     self.finalize_executor(self.configuration.global_operation_pool)
   end

lib/concurrent/utility/timer.rb

@@ -14,7 +14,7 @@ def timer(seconds, &block)
     raise ArgumentError.new('no block given') unless block_given?
     raise ArgumentError.new('interval must be greater than or equal to zero') if seconds < 0
 
-    Concurrent.configuration.global_timer_pool.post(seconds, &block)
+    Concurrent.configuration.global_timer_set.post(seconds, &block)
     true
   end
   module_function :timer

spec/concurrent/configuration_spec.rb

@@ -5,8 +5,8 @@ module Concurrent
   describe Configuration do
 
     it 'creates a global timer pool' do
-      Concurrent.configuration.global_timer_pool.should_not be_nil
-      Concurrent.configuration.global_timer_pool.should respond_to(:post)
+      Concurrent.configuration.global_timer_set.should_not be_nil
+      Concurrent.configuration.global_timer_set.should respond_to(:post)
     end
 
     context 'global task pool' do

spec/concurrent/utility/timer_spec.rb

@@ -34,7 +34,7 @@ module Concurrent
     end
 
     it 'runs the task on the global timer pool' do
-      Concurrent.configuration.global_timer_pool.should_receive(:post).with(0.1)
+      Concurrent.configuration.global_timer_set.should_receive(:post).with(0.1)
       Concurrent::timer(0.1){ :foo }
     end
   end