/usr/lib/ruby/vendor_ruby/concurrent/atomic_reference/jruby.rb is in ruby-concurrent 1.0.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | require 'concurrent/synchronization'
if defined?(Concurrent::JavaAtomicReference)
require 'concurrent/atomic_reference/direct_update'
module Concurrent
# @!macro atomic_reference
#
# @!visibility private
# @!macro internal_implementation_note
class JavaAtomicReference
include Concurrent::AtomicDirectUpdate
end
end
end
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