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
Yf                 @   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 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/python35/lib64/python3.5/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   run2   s    #z_WorkItem.runN)__name__
__module____qualname__r   r   r   r   r   r   r   +   s   r   c             C   s   yq xj | j  d d  } | d  k	 r4 | j   ~ q |    } t sX | d  k sX | j ri | 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               @   sj   e  Z d  Z d 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)ThreadPoolExecutorNc             C   sz   | d k r" t  j   p d d } | d k r: t d   | |  _ 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.
        N      r   z"max_workers must be greater than 0F)os	cpu_count
ValueError_max_workersqueueZQueue_work_queueset_threadsr   	threadingZLock_shutdown_lock)r   Zmax_workersr   r   r   r   T   s    		zThreadPoolExecutor.__init__c             O   si   |  j  Y |  j r t d   t j   } t | | | |  } |  j j |  |  j   | SWd  QRXd  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   submith   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 | <d  S)Nc             S   s   | j  d   d  S)N)r   )_r
   r   r   r   
weakref_cbx   s    z;ThreadPoolExecutor._adjust_thread_count.<locals>.weakref_cbtargetr   T)r(   lenr*   r&   r+   ZThreadr   weakrefrefZdaemonstartaddr   )r   r3   r	   r   r   r   r.   u   s    	
z'ThreadPoolExecutor._adjust_thread_countTc          	   C   sR   |  j   d |  _ |  j j d   Wd  QRX| rN x |  j D] } | j   q: Wd  S)NT)r,   r   r(   r   r*   r   )r   waitr	   r   r   r   shutdown   s    
	zThreadPoolExecutor.shutdown)
r   r   r   r   r1   r   Executor__doc__r.   r;   r   r   r   r   r    S   s   r    )r=   
__author__atexitZconcurrent.futuresr   r'   r+   r6   r#   WeakKeyDictionaryr   r   r   registerobjectr   r   r<   r    r   r   r   r   <module>   s   	