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thread.cpython-310.pyc
o }5hC" @ s d Z dZddlmZ ddlZddlZddlZddlZddlZddl Z e Z da e Zdd Zee ee drEe jejejejd G d d d eZd d ZG dd dejZG dd dejZ dS )z Implements ThreadPoolExecutor.z"Brian Quinlan (brian@sweetapp.com) )_baseNFc C sf t daW d n1 sw Y tt } | D ] \}}|d q | D ]\}}| q(d S NT)_global_shutdown_lock _shutdownlist_threads_queuesitemsputjoin)r tq r 0/usr/lib/python3.10/concurrent/futures/thread.py _python_exit s r register_at_fork)beforeafter_in_childafter_in_parentc @ s& e Zd Zdd Zdd ZeejZdS ) _WorkItemc C s || _ || _|| _|| _d S N)futurefnargskwargs)selfr r r r r r r __init__/ s z_WorkItem.__init__c C sn | j sd S z | j| ji | j}W n ty. } z| j | d } W Y d }~d S d }~ww | j | d S r )r set_running_or_notify_cancelr r r BaseException set_exception set_result)r resultexcr r r run5 s z _WorkItem.runN) __name__ __module__ __qualname__r r" classmethodtypes GenericAlias__class_getitem__r r r r r . s r c C s |d ur(z|| W n t y' tjjddd | }|d ur$| Y d S w z; |jdd}|d urG| ~| }|d urE|j ~q)| }t sS|d u sS|j rb|d urZd|_ | d W d S ~q* t yu tjjddd Y d S w )NzException in initializer:T)exc_info)blockzException in worker) r r LOGGERcritical_initializer_failedgetr" _idle_semaphorereleaser r )executor_reference work_queue initializerinitargsexecutor work_itemr r r _workerE s@ r8 c @ s e Zd ZdZdS )BrokenThreadPoolzR Raised when a worker thread in a ThreadPoolExecutor failed initializing. N)r# r$ r% __doc__r r r r r9 p s r9 c @ sd e Zd Ze jZ dddZdd Ze j jj e_ dd Z d d Z dd dddZe j jj e_ dS )ThreadPoolExecutorN r c C s |du rt dt p dd }|dkrtd|dur#t|s#td|| _t | _ t d| _ t | _d| _d| _t | _|pGd | | _|| _|| _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)minos cpu_count ValueErrorcallable TypeError _max_workersqueue SimpleQueue _work_queue threading Semaphorer0 set_threads_brokenr Lock_shutdown_lock_counter_thread_name_prefix _initializer _initargs)r max_workersthread_name_prefixr4 r5 r r r r { s$ zThreadPoolExecutor.__init__c O s | j N t; | jrt| j| jrtdtr tdt }t||||}| j | | |W d W d S 1 sDw Y W d d S 1 sTw Y d S )Nz*cannot schedule new futures after shutdownz6cannot schedule new futures after interpreter shutdown) rP r rN r9 r RuntimeErrorr Futurer rI r _adjust_thread_count)r r r r fwr r r submit s RzThreadPoolExecutor.submitc C s | j jddr d S | jfdd}t| j}|| jk rGd| jp | |f }tj|t t | || j| j | j fd}| | j| | jt|< d S 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)nametargetr )r0 acquirerI lenrM rF rR rJ Threadr8 weakrefrefrS rT startaddr )r r_ num_threads thread_namer r r r rY s& z'ThreadPoolExecutor._adjust_thread_countc C st | j - d| _ z| j }W n tjy Y nw |d ur'|jt| j qW d d S 1 s3w Y d S )NzBA thread initializer failed, the thread pool is not usable anymore) rP rN rI get_nowaitrG Emptyr r r9 )r r7 r r r r. s "z&ThreadPoolExecutor._initializer_failedTF)cancel_futuresc C s | j 0 d| _|r& z| j }W n tjy Y n w |d ur%|j q | jd W d n1 s6w Y |rG| j D ]}| q@d S d S r ) rP r rI rk rG rl r cancelr rM r )r waitrm r7 r r r r shutdown s& zThreadPoolExecutor.shutdown)Nr< Nr )T)r# r$ r% itertoolscount__next__rQ r r\ r Executorr: rY r. rp r r r r r; v s & r; ) r: __author__concurrent.futuresr rq rG rJ r' re rA WeakKeyDictionaryr r rO r r _register_atexithasattrr rb _at_fork_reinitr1 objectr r8 BrokenExecutorr9 rt r; r r r r <module> s. +