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� � YZ d e f d � � YZ d S( s' A multi-producer, multi-consumer queue.i����( t timeN( t dequet Emptyt Fullt Queuet
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� Z d � Z d � Z RS( sj Create a queue object with a given maximum size.
If maxsize is <= 0, the queue size is infinite.
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c C ss | j j � zQ | j d } | d k rT | d k rD t d � � n | j j � n | | _ Wd | j j � Xd S( s. Indicate that a formerly enqueued task is complete.
Used by Queue consumer threads. For each get() used to fetch a task,
a subsequent call to task_done() tells the queue that the processing
on the task is complete.
If a join() is currently blocking, it will resume when all items
have been processed (meaning that a task_done() call was received
for every item that had been put() into the queue).
Raises a ValueError if called more times than there were items
placed in the queue.
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The count of unfinished tasks goes up whenever an item is added to the
queue. The count goes down whenever a consumer thread calls task_done()
to indicate the item was retrieved and all work on it is complete.
When the count of unfinished tasks drops to zero, join() unblocks.
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c C s* | j j � | j � } | j j � | S( s9 Return the approximate size of the queue (not reliable!).( R R t _qsizeR ( R t n( ( s* /opt/alt/python27/lib64/python2.7/Queue.pyt qsizeV s
c C s+ | j j � | j � } | j j � | S( sC Return True if the queue is empty, False otherwise (not reliable!).( R R R R ( R R ( ( s* /opt/alt/python27/lib64/python2.7/Queue.pyt empty] s
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� Xd S( s Put an item into the queue.
If optional args 'block' is true and 'timeout' is None (the default),
block if necessary until a free slot is available. If 'timeout' is
a non-negative number, it blocks at most 'timeout' seconds and raises
the Full exception if no free slot was available within that time.
Otherwise ('block' is false), put an item on the queue if a free slot
is immediately available, else raise the Full exception ('timeout'
is ignored in that case).
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c C s | j | t � S( s� Put an item into the queue without blocking.
Only enqueue the item if a free slot is immediately available.
Otherwise raise the Full exception.
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� | SWd | j j � Xd S( s Remove and return an item from the queue.
If optional args 'block' is true and 'timeout' is None (the default),
block if necessary until an item is available. If 'timeout' is
a non-negative number, it blocks at most 'timeout' seconds and raises
the Empty exception if no item was available within that time.
Otherwise ('block' is false), return an item if one is immediately
available, else raise the Empty exception ('timeout' is ignored
in that case).
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| j t � S( s� Remove and return an item from the queue without blocking.
Only get an item if one is immediately available. Otherwise
raise the Empty exception.
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RS( s� Variant of Queue that retrieves open entries in priority order (lowest first).
Entries are typically tuples of the form: (priority number, data).
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c B s5 e Z d Z d � Z e d � Z d � Z d � Z RS( sB Variant of Queue that retrieves most recently added entries first.c C s
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