in the case that the consumer is already blocked by take() , will producer’s completeAdding wake it up? using BlockingCollection. MSDN does not state it clearly.
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in the case that the consumer is already blocked by take() , will producer’s completeAdding wake it up? using BlockingCollection. MSDN does not state it clearly.
No.
A quick experiment shows it will throw an InvalidOperation exception in the Take() method.
And that makes sense:
What would
valuebe when the Thread/Task would just ‘wake up’ without any data to return ?If you are blocked with
TryTake(out x)it will return withfalsewhen Adding is completed.