Method: Concurrent::Future#set

Defined in:

lib/concurrent-ruby/concurrent/future.rb

#set(value = NULL) { ... } ⇒ IVar

Set the IVar to a value and wake or notify all threads waiting on it.

Parameters:

• value (Object) (defaults to: NULL) —

  the value to store in the IVar

Yields:

• A block operation to use for setting the value

Returns:

• (IVar) —

  self

Raises:

• (ArgumentError) —

  if both a value and a block are given

• (Concurrent::MultipleAssignmentError) —

  if the IVar has already been set or otherwise completed

# File 'lib/concurrent-ruby/concurrent/future.rb', line 82

def set(value = NULL, &block)
  check_for_block_or_value!(block_given?, value)
  synchronize do
    if @state != :unscheduled
      raise MultipleAssignmentError
    else
      @task = block || Proc.new { value }
    end
  end
  execute
end