Class: Flic::Blocker
- Inherits:
-
Object
- Object
- Flic::Blocker
- Defined in:
- lib/flic/blocker.rb
Instance Attribute Summary collapse
-
#rejection_value ⇒ Object
readonly
Returns the value of attribute rejection_value.
Instance Method Summary collapse
- #block_until_callback ⇒ Object
-
#initialize ⇒ Blocker
constructor
A new instance of Blocker.
- #unblock_all!(*rejection_value) ⇒ Object
Constructor Details
#initialize ⇒ Blocker
Returns a new instance of Blocker.
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# File 'lib/flic/blocker.rb', line 9 def initialize @semaphore = Mutex.new @queues = [] @rejection_value = nil end |
Instance Attribute Details
#rejection_value ⇒ Object (readonly)
Returns the value of attribute rejection_value.
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# File 'lib/flic/blocker.rb', line 7 def rejection_value @rejection_value end |
Instance Method Details
#block_until_callback ⇒ Object
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# File 'lib/flic/blocker.rb', line 15 def block_until_callback queue = Queue.new begin @semaphore.synchronize do if @queues.frozen? raise *rejection_value else @queues << queue end end yield proc { |value| queue << [:resolve, value] } control, value = queue.pop case control when :resolve value when :reject raise *rejection_value end ensure @semaphore.synchronize do unless @queues.frozen? @queues.delete queue end end end end |
#unblock_all!(*rejection_value) ⇒ Object
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# File 'lib/flic/blocker.rb', line 46 def unblock_all!(*rejection_value) @semaphore.synchronize do unless @queues.frozen? @rejection_value = rejection_value @queues.each { |queue| queue << [:reject, *rejection_value] }.clear @queues.freeze freeze end end end |