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j f                 @   s   d  Z  d Z d d l Z d d l m Z d d l Z d d l Z d d l Z e j   Z	 d a
 d d   Z e j e  Gd d	   d	 e  Z d
 d   Z Gd d   d e j  Z d S)zImplements ThreadPoolExecutor.z"Brian Quinlan (brian@sweetapp.com)    N)_baseFc              C   sa   d a  t t j    }  x! |  D] \ } } | j d   q Wx |  D] \ } } | j   qC Wd  S)NT)	_shutdownlist_threads_queuesitemsputjoin)r   tq r   >/opt/alt/python34/lib64/python3.4/concurrent/futures/thread.py_python_exit   s    r   c               @   s(   e  Z d  Z d d   Z d d   Z d S)	_WorkItemc             C   s(   | |  _  | |  _ | |  _ | |  _ d  S)N)futurefnargskwargs)selfr   r   r   r   r   r   r   __init__+   s    			z_WorkItem.__init__c             C   s{   |  j  j   s d  Sy |  j |  j |  j   } Wn5 t k
 rf } z |  j  j |  WYd  d  } ~ Xn X|  j  j |  d  S)N)r   Zset_running_or_notify_cancelr   r   r   BaseExceptionZset_exceptionZ
set_result)r   resulter   r   r   run1   s    #z_WorkItem.runN)__name__
__module____qualname__r   r   r   r   r   r   r   *   s   r   c             C   s   yt xm | j  d d  } | d  k	 r7 | j   ~ q n  |    } t s[ | d  k s[ | j rl | j d   d  S~ q WWn( t k
 r t j j d d d Yn Xd  S)NblockTzException in workerexc_info)getr   r   r   r   r   ZLOGGERZcritical)Zexecutor_referenceZ
work_queueZ	work_itemZexecutorr   r   r   _worker<   s    
	r   c               @   sg   e  Z d  Z d d   Z d d   Z e j j j e _ d d   Z d d d	  Z	 e j j	 j e	 _ d
 S)ThreadPoolExecutorc             C   s@   | |  _  t j   |  _ t   |  _ d |  _ t j   |  _	 d S)zInitializes a new ThreadPoolExecutor instance.

        Args:
            max_workers: The maximum number of threads that can be used to
                execute the given calls.
        FN)
_max_workersqueueZQueue_work_queueset_threadsr   	threadingZLock_shutdown_lock)r   Zmax_workersr   r   r   r   S   s
    		zThreadPoolExecutor.__init__c             O   sk   |  j  \ |  j r" t d   n  t j   } t | | | |  } |  j j |  |  j   | SWd  QXd  S)Nz*cannot schedule new futures after shutdown)	r'   r   RuntimeErrorr   ZFuturer   r#   r   _adjust_thread_count)r   r   r   r   fwr   r   r   submit`   s    
	
zThreadPoolExecutor.submitc             C   s   |  j  d d  } t |  j  |  j k  r t j d t d t j |  |  |  j  f  } d | _	 | j
   |  j j |  |  j  t | <n  d  S)Nc             S   s   | j  d   d  S)N)r   )_r
   r   r   r   
weakref_cbp   s    z;ThreadPoolExecutor._adjust_thread_count.<locals>.weakref_cbtargetr   T)r#   lenr%   r!   r&   ZThreadr   weakrefrefZdaemonstartaddr   )r   r.   r	   r   r   r   r)   m   s    	
z'ThreadPoolExecutor._adjust_thread_countTc          	   C   sT   |  j   d |  _ |  j j d   Wd  QX| rP x |  j D] } | j   q9 Wn  d  S)NT)r'   r   r#   r   r%   r   )r   waitr	   r   r   r   shutdown}   s    
	zThreadPoolExecutor.shutdownN)
r   r   r   r   r,   r   Executor__doc__r)   r6   r   r   r   r   r    R   s   r    )r8   
__author__atexitZconcurrent.futuresr   r"   r&   r1   WeakKeyDictionaryr   r   r   registerobjectr   r   r7   r    r   r   r   r   <module>   s   	