Merge pull request #472 from reidmorrison/master

Fixes #471 uninitialized constant Concurrent::ReentrantReadWriteLock

Author: jdantonio

lib/concurrent/atomics.rb

@@ -48,5 +48,6 @@
 require 'concurrent/atomic/count_down_latch'
 require 'concurrent/atomic/event'
 require 'concurrent/atomic/read_write_lock'
+require 'concurrent/atomic/reentrant_read_write_lock'
 require 'concurrent/atomic/semaphore'
 require 'concurrent/atomic/thread_local_var'

spec/concurrent/atomic/reentrant_read_write_lock_spec.rb

@@ -9,8 +9,6 @@
   # long as `ReentrantReadWriteLock` is not changed (with respect to
   # `ThreadLocalVar`) we can safely assume proper functionality on JRuby.
 
-  require 'concurrent/atomic/reentrant_read_write_lock'
-  require 'concurrent/atomic/count_down_latch'
   require 'timeout'
 
   module Concurrent