Google
Edit File: thread.cpython-39.pyc
a �iC" � @ s� d Z dZddlmZ ddlZddlZddlZddlZddlZddl Z e� � Z da e� � Zdd� Ze�e� ee d�r�e jejejejd � G d d � d e�Zd d � ZG dd� dej�ZG dd� dej�Z dS )z Implements ThreadPoolExecutor.z"Brian Quinlan (brian@sweetapp.com)� )�_baseNFc C sf t � daW d � n1 s 0 Y tt�� �} | D ]\}}|�d � q8| D ]\}}|�� qPd S �NT)�_global_shutdown_lock� _shutdown�list�_threads_queues�items�put�join)r �t�q� r �1/usr/lib64/python3.9/concurrent/futures/thread.py� _python_exit s " r �register_at_fork)�before�after_in_child�after_in_parentc @ s& e Zd Zdd� Zdd� Zeej�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 sl | j �� sd S z| j| ji | j��}W n4 tyZ } z | j �|� d } W Y d }~nd }~0 0 | j �|� d S r )r � set_running_or_notify_cancelr r r � BaseException� set_exception� set_result)r �result�excr r r �run5 s z _WorkItem.runN) �__name__� __module__� __qualname__r r" � classmethod�types� GenericAlias�__class_getitem__r r r r r . s r c C s� |d urPz ||� W n: t yN tjjddd� | � }|d urH|�� Y d S 0 zx|jdd�}|d ur�|�� ~| � }|d ur�|j�� ~qR| � }t s�|d u s�|j r�|d ur�d|_ |� d � W d S ~qRW n" t y� tjjddd� Y n0 d S )NzException in initializer:T)�exc_info)�blockzException in worker) r r �LOGGER�critical�_initializer_failed�getr" �_idle_semaphore�releaser r )�executor_referenceZ work_queue� initializer�initargs�executor� work_itemr r r �_workerE s8 r7 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 r8 p s r8 c @ s` e Zd Ze�� jZddd�Zdd� Ze j jj e_ dd � Z d d � Z dd d�dd�Ze j jj e_ dS )�ThreadPoolExecutorN� r c C s� |du r t dt�� pdd �}|dkr.td��|durFt|�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�queue� SimpleQueue� _work_queue� threading� Semaphorer0 �set�_threads�_brokenr �Lock�_shutdown_lock�_counter�_thread_name_prefix� _initializer� _initargs)r � max_workersZthread_name_prefixr3 r4 r r r r { s$ �zThreadPoolExecutor.__init__c O s� | j �� t�v | jr t| j��| jr,td��tr8td��t�� }t||||�}| j � |� | � � |W d � W d � S 1 s�0 Y W d � n1 s�0 Y d S )Nz*cannot schedule new futures after shutdownz6cannot schedule new futures after interpreter shutdown) rO r rM r8 r � RuntimeErrorr �Futurer rH r �_adjust_thread_count)r r r r �f�wr r r �submit� s zThreadPoolExecutor.submitc C s� | j jdd�rd S | jfdd�}t| j�}|| jk r�d| jp>| |f }tj|t t � | |�| j| j | j fd�}|�� | j�|� | jt|< d S )Nr )�timeoutc 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 )r0 �acquirerH �lenrL rE rQ rI �Threadr7 �weakref�refrR rS �start�addr )r r] Z num_threadsZ thread_namer r r r rW � s$ � �� z'ThreadPoolExecutor._adjust_thread_countc C st | j �Z d| _z| j�� }W n tjy4 Y qRY n0 |d ur|j�t| j�� qW d � n1 sf0 Y d S )NzBA thread initializer failed, the thread pool is not usable anymore) rO rM rH � get_nowaitrF �Emptyr r r8 )r r6 r r r r. � s z&ThreadPoolExecutor._initializer_failedTF)�cancel_futuresc C s� | j �b d| _|rNz| j�� }W n tjy8 Y qNY n0 |d ur|j�� q| j�d � W d � n1 sn0 Y |r�| j D ] }|� � q�d S r ) rO r rH rg rF rh r �cancelr rL r )r �waitri r6 r r r r �shutdown� s * zThreadPoolExecutor.shutdown)Nr; Nr )T)r# r$ r% � itertools�count�__next__rP r rZ r �Executorr9 rW r. rl r r r r r: v s � & r: ) r9 � __author__�concurrent.futuresr rm rF rI r' rc r@ �WeakKeyDictionaryr r rN r r �_register_atexit�hasattrr r` �_at_fork_reinitr1 �objectr r7 �BrokenExecutorr8 rp r: r r r r �<module> s, �+