JezK
Edit File: power_of_two_tuple.rb
module ThreadSafe module Util class PowerOfTwoTuple < VolatileTuple def initialize(size) raise ArgumentError, "size must be a power of 2 (#{size.inspect} provided)" unless size > 0 && size & (size - 1) == 0 super(size) end def hash_to_index(hash) (size - 1) & hash end def volatile_get_by_hash(hash) volatile_get(hash_to_index(hash)) end def volatile_set_by_hash(hash, value) volatile_set(hash_to_index(hash), value) end def next_in_size_table self.class.new(size << 1) end end end end