class Concurrent::Atom

def swap(*args)

Raises:
  • (ArgumentError) - When no block is given.

Returns:
  • (Object) - The final value of the atom after all operations and

Other tags:
    Yieldreturn: - The intended new value of the atom.

Other tags:
    Yieldparam: args - All arguments passed to the function, in order.
    Yieldparam: value - The current value of the atom.

Other tags:
    Yield: - Calculates a new value for the atom based on the

Parameters:
  • args (Object) -- Zero or more arguments passed to the block.

Other tags:
    Note: - The given block may be called multiple times, and thus should be free 
def swap(*args)
  raise ArgumentError.new('no block given') unless block_given?
  loop do
    old_value = value
    new_value = yield(old_value, *args)
    begin
      break old_value unless valid?(new_value)
      break new_value if compare_and_set(old_value, new_value)
    rescue
      break old_value
    end
  end
end