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dd Zdd Zdd Zed d Zd d Zed!d" Zd#d$ Zd%d& Zed'd( ZdS )*r a A queue, useful for coordinating producer and consumer coroutines.
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queue reaches maxsize, until an item is removed by get().
Unlike the standard library Queue, you can reliably know this Queue's size
with qsize(), since your single-threaded asyncio application won't be
interrupted between calling qsize() and doing an operation on the Queue.
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r z!task_done() called too many timesr N)r r= r r )r r r r task_done s
zQueue.task_donec c s | j dkr| jj E dH dS )a Block until all items in the queue have been gotten and processed.
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