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dd� �Zdd� Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� ZdS )*r a A queue, useful for coordinating producer and consumer coroutines.
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zQueue.get_nowaitc C s8 | j dkrtd��| j d8 _ | j dkr4| j�� dS )a$ Indicate that a formerly enqueued task is complete.
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a subsequent call to task_done() tells the queue that the processing
on the task is complete.
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zQueue.task_donec � s | j dkr| j�� I dH dS )a Block until all items in the queue have been gotten and processed.
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r c @ s4 e Zd ZdZdd� Zejfdd�Zejfdd�Z dS ) r z�A subclass of Queue; retrieves entries in priority order (lowest first).
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r r! �heapqrR r/ rS r* r r r r r � s r c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) r zEA subclass of Queue that retrieves most recently added entries first.c C s
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