Ruby volatile APIs

gistfile1.rb

# using accessors:

attr_volatile :table, :size_control

def check_for_resize
  while (current_table = table) && MAX_CAP > (table_size = current_table.size) && RESIZING != (size_ctrl = size_control) && size_ctrl < @counter.sum
    try_in_resize_lock(current_table, size_ctrl) do
      self.table = rebuild(current_table)
      (table_size << 1) - (table_size >> 1) # 75% load factor
    end
  end
end

# using i-vars:

volatile :@table, :@size_control

def check_for_resize
  while (table = @table) && MAX_CAP > (table_size = table.size) && RESIZING != (size_control = @size_control) && size_control < @counter.sum
    try_in_resize_lock(table, size_control) do
      @table = rebuild(table)
      (table_size << 1) - (table_size >> 1) # 75% load factor
    end
  end
end