Class: Concurrent::LockFreeQueue::Node

Inherits:
Synchronization::Object show all
Defined in:
lib/concurrent-ruby-edge/concurrent/edge/lock_free_queue.rb

Instance Method Summary collapse

Constructor Details

#initialize(item, successor) ⇒ Node

Returns a new instance of Node.



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# File 'lib/concurrent-ruby-edge/concurrent/edge/lock_free_queue.rb', line 9

def initialize(item, successor)
  super()
  # published through queue, no need to be volatile or final
  @Item          = item
  self.successor = successor
end

Instance Method Details

#compare_and_set_successor(expected_successor, new_successor) ⇒ true, false

Sets the successor to new_successor if the current successor is expected_successor

Returns:

  • (true, false) 


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# File 'lib/concurrent-ruby-edge/concurrent/edge/lock_free_queue.rb', line 7

attr_atomic :successor

#item ⇒ undocumented 



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# File 'lib/concurrent-ruby-edge/concurrent/edge/lock_free_queue.rb', line 16

def item
  @Item
end

#successor ⇒ Object

Returns The successor.

Returns:

  • (Object) —

    The successor.



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# File 'lib/concurrent-ruby-edge/concurrent/edge/lock_free_queue.rb', line 7

attr_atomic :successor

#successor=(new_successor) ⇒ Object

Set the successor.

Returns:

  • (Object) —

    new_successor.



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# File 'lib/concurrent-ruby-edge/concurrent/edge/lock_free_queue.rb', line 7

attr_atomic :successor

#swap_successor(new_successor) ⇒ Object

Set the successor to new_successor and return the old successor.

Returns:

  • (Object) —

    old successor



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# File 'lib/concurrent-ruby-edge/concurrent/edge/lock_free_queue.rb', line 7

attr_atomic :successor

#update_successor {|Object| ... } ⇒ Object

Updates the successor using the block.

Yields:

  • (Object) —

    Calculate a new successor using given (old) successor

Yield Parameters:

  • old (Object) —

    successor

Returns:

  • (Object) —

    new successor



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# File 'lib/concurrent-ruby-edge/concurrent/edge/lock_free_queue.rb', line 7

attr_atomic :successor