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# @!macro [new] atomic_reference
#
# An object reference that may be updated atomically. All read and write
# operations have java volatile semantic.
#
# @!macro thread_safe_variable_comparison
#
# @see http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicReference.html
# @see http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/package-summary.html
#
# @!method initialize
# @!macro [new] atomic_reference_method_initialize
# @param [Object] value The initial value.
#
# @!method get
# @!macro [new] atomic_reference_method_get
# Gets the current value.
# @return [Object] the current value
#
# @!method set
# @!macro [new] atomic_reference_method_set
# Sets to the given value.
# @param [Object] new_value the new value
# @return [Object] the new value
#
# @!method get_and_set
# @!macro [new] atomic_reference_method_get_and_set
# Atomically sets to the given value and returns the old value.
# @param [Object] new_value the new value
# @return [Object] the old value
#
# @!method compare_and_set
# @!macro [new] atomic_reference_method_compare_and_set
#
# Atomically sets the value to the given updated value if
# the current value == the expected value.
#
# @param [Object] old_value the expected value
# @param [Object] new_value the new value
#
# @return [Boolean] `true` if successful. A `false` return indicates
# that the actual value was not equal to the expected value.
require 'concurrent/atomic/atomic_reference'
require 'concurrent/atomic/atomic_boolean'
require 'concurrent/atomic/atomic_fixnum'
require 'concurrent/atomic/cyclic_barrier'
require 'concurrent/atomic/count_down_latch'
require 'concurrent/atomic/event'
require 'concurrent/atomic/read_write_lock'
require 'concurrent/atomic/semaphore'
require 'concurrent/atomic/thread_local_var'
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