Viewing: thread.cpython-38.pyc
U i�f@" � @ s� d Z dZddlZddlmZ ddlZddlZddlZddlZddl Z e� � Z da dd� Z e�e � G dd � d e�Zd d � ZG d d � d ej�ZG dd� dej�ZdS )z Implements ThreadPoolExecutor.z"Brian Quinlan (brian@sweetapp.com)� N)�_baseFc C sB da tt�� �} | D ]\}}|�d � q| D ]\}}|�� q,d S �NT)� _shutdown�list�_threads_queues�items�put�join)r �t�q� r �>/opt/alt/python38/lib64/python3.8/concurrent/futures/thread.py� _python_exit! s r c @ s e Zd Zdd� Zdd� ZdS )� _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 �� sd S z| j| j| j�}W n2 tk rT } z| j �|� d } W 5 d }~X Y nX | j �|� d S r )r Z set_running_or_notify_cancelr r r � BaseException� set_exceptionZ set_result)r �result�excr r r �run4 s z _WorkItem.runN)�__name__� __module__� __qualname__r r r r r r r - s r c C s� |d k rRz ||� W n< t k rP tjjddd� | � }|d k rJ|�� Y d S X zx|jdd�}|d k r�|�� ~| � }|d k r�|j�� ~qT| � }t s�|d ks�|j r�|d k r�d|_ |� d � W d S ~qTW n$ t k r� tjjddd� Y nX d S )NzException in initializer:T)�exc_info)�blockzException in worker) r r ZLOGGERZcritical�_initializer_failed�getr �_idle_semaphore�releaser r )Zexecutor_referenceZ work_queue� initializer�initargsZexecutor� work_itemr r r �_workerB s8 r( c @ s e Zd ZdZdS )�BrokenThreadPoolzR Raised when a worker thread in a ThreadPoolExecutor failed initializing. N)r r r �__doc__r r r r r) m s r) c @ sf e Zd Ze�� jZddd�Zdd� Ze j jj e_ e j jj e_ dd � Z d d � Zdd d�Ze j jj e_ dS )�ThreadPoolExecutorN� r c C s� |dkr t dt�� pdd �}|dkr.td��|dk rFt|�sFtd��|| _t�� | _ t � d�| _ t � | _d| _d| _t �� | _|p�d | �� | _|| _|| _dS ) 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. initializer: A callable used to initialize worker threads. initargs: A tuple of arguments to pass to the initializer. N� � � r z"max_workers must be greater than 0z initializer must be a callableFzThreadPoolExecutor-%d)�min�os� cpu_count� ValueError�callable� TypeError� _max_workers�queueZ SimpleQueue� _work_queue� threadingZ Semaphorer# �set�_threads�_brokenr ZLock�_shutdown_lock�_counter�_thread_name_prefix� _initializer� _initargs)r Z max_workersZthread_name_prefixr% r& r r r r x s$ �zThreadPoolExecutor.__init__c O s� t | �dkr| ^}}} nV| s&td��nHd|krZ|�d�}| ^}} dd l}|jdtdd� ntdt | �d ��|j�f |jr�t|j��|j r�t d ��t r�t d ��t � � }t ||| |�}|j�|� |�� |W 5 Q R � S Q R X d S ) N� zDdescriptor 'submit' of 'ThreadPoolExecutor' object needs an argumentr r z.Passing 'fn' as keyword argument is deprecated)� stacklevelz6submit expected at least 1 positional argument, got %dr. z*cannot schedule new futures after shutdownz6cannot schedule new futures after interpreter shutdown)�lenr5 �pop�warnings�warn�DeprecationWarningr= r< r) r � RuntimeErrorr ZFuturer r8 r �_adjust_thread_count)r r r r rF �f�wr r r �submit� s6 � � zThreadPoolExecutor.submitc C s� | j jdd�rd S | jfdd�}t| j�}|| jk r�d| jp>| |f }tj|t t � | |�| j| j | j fd�}d|_|�� | j�|� | jt|< d S )Nr )Ztimeoutc S s |� d � d S r )r )�_r r r r � weakref_cb� s z;ThreadPoolExecutor._adjust_thread_count.<locals>.weakref_cbz%s_%d)�name�targetr T)r# �acquirer8 rD r; r6 r? r9 ZThreadr( �weakref�refr@ rA Zdaemon�start�addr )r rO Z num_threadsZ thread_namer r r r rJ � s& � �� z'ThreadPoolExecutor._adjust_thread_countc C sb | j �R d| _z| j�� }W n tjk r6 Y qTY nX |d k r|j�t| j�� qW 5 Q R X d S )NzBA thread initializer failed, the thread pool is not usable anymore) r= r< r8 Z get_nowaitr7 ZEmptyr r r) )r r' r r r r! � s z&ThreadPoolExecutor._initializer_failedTc C s@ | j � d| _| j�d � W 5 Q R X |r<| jD ] }|�� q.d S r )r= r r8 r r; r )r �waitr r r r �shutdown� s zThreadPoolExecutor.shutdown)Nr, Nr )T)r r r � itertools�count�__next__r> r rM r �Executor�__text_signature__r* rJ r! rX r r r r r+ s s � & r+ )r* � __author__�atexitZconcurrent.futuresr rY r7 r9 rS r1 �WeakKeyDictionaryr r r �register�objectr r( ZBrokenExecutorr) r\ r+ r r r r �<module> s +
Return