File: //lib/python3.8/concurrent/futures/__pycache__/thread.cpython-38.pyc
U
6&{��NT� @ 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 �D/tmp/_install_python3/usr/lib/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�initargs�executor� 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� threading� Semaphorer# �set�_threads�_brokenr �Lock�_shutdown_lock�_counter�_thread_name_prefix� _initializer� _initargs)r � 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)�lenr6 �pop�warnings�warn�DeprecationWarningr@ r> r* r � RuntimeErrorr ZFuturer r9 r �_adjust_thread_count)r r r r rJ �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 )�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 T)r# �acquirer9 rH r= r7 rB r: �Threadr) �weakref�refrC rD �daemon�start�addr )r rT Z num_threadsZ thread_namer
r r r
rN � 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> r9 Z
get_nowaitr8 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 r9 r r= r )r �waitr
r r r
�shutdown� s
zThreadPoolExecutor.shutdown)Nr- Nr )T)r r r � itertools�count�__next__rA r rQ r �Executor�__text_signature__r+ rN r! r_ r r r r
r, s s
�
&
r, )r+ �
__author__�atexit�concurrent.futuresr r` r8 r: rY r2 �WeakKeyDictionaryr r r �register�objectr r) ZBrokenExecutorr* rc r, r r r r
�<module> s
+