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  \                 @   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ddl	Z	ej
 Zdadd Zeje G dd	 d	eZd
d ZG dd dejZdS )zImplements ThreadPoolExecutor.z"Brian Quinlan (brian@sweetapp.com)    N)_baseFc              C   sJ   da ttj } x| D ]\}}|jd  qW x| D ]\}}|j  q2W d S )NT)	_shutdownlist_threads_queuesitemsputjoin)r   tq r   1/usr/lib64/python3.6/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   sf   | j j sd S y| j| j| j}W n2 tk
rT } z| j j| d } W Y d d }~X nX | j j| d S )N)r   Zset_running_or_notify_cancelr   r   r   BaseExceptionZset_exceptionZ
set_result)r   resultexcr   r   r   run3   s    
z_WorkItem.runN)__name__
__module____qualname__r   r   r   r   r   r   r   ,   s   r   c             C   s|   yRxL|j dd}|d k	r$|j  ~q|  }ts<|d ks<|jrJ|jd  d S ~qW W n$ tk
rv   tjjddd Y nX d S )NT)blockz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               @   sR   e Zd Zej j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 )ThreadPoolExecutorN c             C   sf   |dkrt j pdd }|dkr(td|| _tj | _t | _d| _	t
j | _|p^d| j  | _dS )a  Initializes a new ThreadPoolExecutor instance.

        Args:
            max_workers: The maximum number of threads that can be used to
                execute the given calls.
            thread_name_prefix: An optional name prefix to give our threads.
        N      r   z"max_workers must be greater than 0FzThreadPoolExecutor-%d)os	cpu_count
ValueError_max_workersqueueZQueue_work_queueset_threadsr   	threadingZLock_shutdown_lock_counter_thread_name_prefix)r   Zmax_workersZthread_name_prefixr   r   r   r   [   s    

zThreadPoolExecutor.__init__c             O   sN   | j > | jrtdtj }t||||}| jj| | j  |S Q R X d 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   submitr   s    zThreadPoolExecutor.submitc             C   sz   | j fdd}t| j}|| jk rvd| jp,| |f }tj|ttj	| || j fd}d|_
|j  | jj| | j t|< d S )Nc             S   s   |j d  d S )N)r   )_r
   r   r   r   
weakref_cb   s    z;ThreadPoolExecutor._adjust_thread_count.<locals>.weakref_cbz%s_%d)nametargetr   T)r)   lenr+   r'   r/   r,   ZThreadr   weakrefrefZdaemonstartaddr   )r   r6   Znum_threadsZthread_namer	   r   r   r   r1      s    



z'ThreadPoolExecutor._adjust_thread_countTc          	   C   sD   | j  d| _| jjd  W d Q R X |r@x| jD ]}|j  q0W d S )NT)r-   r   r)   r   r+   r   )r   waitr	   r   r   r   shutdown   s    zThreadPoolExecutor.shutdown)Nr!   )T)r   r   r   	itertoolscount__next__r.   r   r4   r   Executor__doc__r1   r?   r   r   r   r   r    V   s   


r    )rD   
__author__atexitZconcurrent.futuresr   r@   r(   r,   r:   r$   WeakKeyDictionaryr   r   r   registerobjectr   r   rC   r    r   r   r   r   <module>   s   	
