Current File : //lib64/python3.6/multiprocessing/__pycache__/pool.cpython-36.pyc
3
\�e � @ s8 d dgZ ddlZddlZddlZddlZddlZddlZddlZddlm Z ddlm
Z
m Z dZ dZ
dZej� Zdd � Zd
d � ZG d d
� d
e�ZG dd� d�Zdd� ZG dd� de�Zdf ddfdd�Zdd� ZG dd � d e�ZG dd� de�Z e Z G d d � d e �Z G d d � d e�Z G d d!� d!e �Z G d"d� de�Z!dS )#�Pool�
ThreadPool� N� )�util)� get_context� TimeoutError� c C s t t| � �S )N)�list�map)�args� r �,/usr/lib64/python3.6/multiprocessing/pool.py�mapstar+ s r c C s t tj| d | d ��S )Nr r )r � itertools�starmap)r r r r
� starmapstar. s r c @ s e Zd Zdd� Zdd� ZdS )�RemoteTracebackc C s
|| _ d S )N)�tb)�selfr r r r
�__init__6 s zRemoteTraceback.__init__c C s | j S )N)r )r r r r
�__str__8 s zRemoteTraceback.__str__N)�__name__�
__module__� __qualname__r r r r r r
r 5 s r c @ s e Zd Zdd� Zdd� ZdS )�ExceptionWithTracebackc C s0 t jt|�||�}dj|�}|| _d| | _d S )N� z
"""
%s""")� traceback�format_exception�type�join�excr )r r r r r r
r < s
z ExceptionWithTraceback.__init__c C s t | j| jffS )N)� rebuild_excr r )r r r r
�
__reduce__A s z!ExceptionWithTraceback.__reduce__N)r r r r r" r r r r
r ; s r c C s t |�| _| S )N)r � __cause__)r r r r r
r! D s
r! c s0 e Zd ZdZ� fdd�Zdd� Zdd� Z� ZS )�MaybeEncodingErrorzVWraps possible unpickleable errors, so they can be
safely sent through the socket.c s. t |�| _t |�| _tt| �j| j| j� d S )N)�reprr �value�superr$ r )r r r& )� __class__r r
r P s
zMaybeEncodingError.__init__c C s d| j | jf S )Nz(Error sending result: '%s'. Reason: '%s')r& r )r r r r
r U s zMaybeEncodingError.__str__c C s d| j j| f S )Nz<%s: %s>)r( r )r r r r
�__repr__Y s zMaybeEncodingError.__repr__)r r r �__doc__r r r) �
__classcell__r r )r( r
r$ L s r$ Fc ' C s� |d ks t |�tkr |dks t�|j}| j}t| d�rJ| jj� |jj� |d k rZ||� d}�xL|d ksx|ot||k �r�y
|� } W n$ t t
fk
r� t j d� P Y nX | d kr�t j d� P | \}
} } }
}yd| |
|�f}W nF t
k
�r" } z(|o�| tk �r
t||j�}d|f}W Y d d }~X nX y||
| |f� W nR t
k
�r� } z4t||d �}t j d| � ||
| d|ff� W Y d d }~X nX d } }
} } }
}|d7 }qbW t j d | � d S )
Nr �_writerz)worker got EOFError or OSError -- exitingz worker got sentinel -- exitingTFr z0Possible encoding error while sending result: %sz worker exiting after %d tasks)r �int�AssertionError�put�get�hasattrr, �close�_reader�EOFError�OSErrorr �debug� Exception�_helper_reraises_exceptionr �
__traceback__r$ )�inqueue�outqueue� initializer�initargsZmaxtasksZwrap_exceptionr/ r0 Z completed�task�job�i�funcr �kwds�result�e�wrappedr r r
�worker] sF
$ rF c C s | �dS )z@Pickle-able helper function for use by _guarded_task_generation.Nr )Zexr r r
r8 � s r8 c @ s6 e Zd ZdZdZdd� Zddf ddfdd�Zdd � Zd
d � Zd d
� Z dd� Z
f i fdd�Z d=dd�Z d>dd�Z
d?dd�Zdd� Zd@dd �ZdAd d �Zf i ddfd d �ZdBd!d"�ZdCd#d$�Zed%d&� �Zed'd(� �Zed)d*� �Zed+d,� �Zd-d.� Zd/d0� Zd1d2� Z d3d4� Z ed5d6� �Z e d7d8� �Z d9d:� Z!d;d<� Z"dS )Dr zS
Class which supports an async version of applying functions to arguments.
Tc O s | j j||�S )N)�_ctx�Process)r r rB r r r
rH � s z Pool.ProcessNc C sn |pt � | _| j� tj� | _i | _t| _|| _ || _
|| _ |d krPt j
� pNd}|dk r`td��|d k rzt|� rztd��|| _g | _| j� tjtj| fd�| _d| j_t| j_| jj� tjtj| j| j | j | j| jfd�| _ d| j _t| j _| j j� tjtj | j | j | jfd�| _!d| j!_t| j!_| j!j� t"j#| | j$| j| j%| j | j| j| j | j!| jfdd�| _&d S )Nr z&Number of processes must be at least 1z initializer must be a callable)�targetr T� )r Z exitpriority)'r rG �
_setup_queues�queue�Queue�
_taskqueue�_cache�RUN�_state�_maxtasksperchild� _initializer� _initargs�os� cpu_count�
ValueError�callable� TypeError�
_processes�_pool�_repopulate_pool� threadingZThreadr �_handle_workers�_worker_handler�daemon�start�
_handle_tasks�
_quick_put� _outqueue�
_task_handler�_handle_results�
_quick_get�_result_handlerr ZFinalize�_terminate_pool�_inqueue�
_terminate)r � processesr< r= Zmaxtasksperchild�contextr r r
r � sT
z
Pool.__init__c C sZ d}xPt tt| j���D ]:}| j| }|jdk rtjd| � |j� d}| j|= qW |S )z�Cleanup after any worker processes which have exited due to reaching
their specified lifetime. Returns True if any workers were cleaned up.
FNzcleaning up worker %dT)�reversed�range�lenr[ �exitcoder r6 r )r Zcleanedr@ rF r r r
�_join_exited_workers� s
zPool._join_exited_workersc C s| xvt | jt| j� �D ]^}| jt| j| j| j| j | j
| j fd�}| jj |� |j
jdd�|_
d|_|j� tjd� qW dS )z�Bring the number of pool processes up to the specified number,
for use after reaping workers which have exited.
)rI r rH Z
PoolWorkerTz added workerN)ro rZ rp r[ rH rF rj rd rS rT rR �_wrap_exception�append�name�replacer` ra r r6 )r r@ �wr r r
r\ � s zPool._repopulate_poolc C s | j � r| j� dS )zEClean up any exited workers and start replacements for them.
N)rr r\ )r r r r
�_maintain_pool� s zPool._maintain_poolc C s4 | j j� | _| j j� | _| jjj| _| jjj| _ d S )N)
rG Z SimpleQueuerj rd r, �sendrc r3 �recvrg )r r r r
rK � s zPool._setup_queuesc C s | j tkst�| j|||�j� S )z6
Equivalent of `func(*args, **kwds)`.
)rQ rP r. � apply_asyncr0 )r rA r rB r r r
�apply� s z
Pool.applyc C s | j ||t|�j� S )zx
Apply `func` to each element in `iterable`, collecting the results
in a list that is returned.
)�
_map_asyncr r0 )r rA �iterable� chunksizer r r
r
s zPool.mapc C s | j ||t|�j� S )z�
Like `map()` method but the elements of the `iterable` are expected to
be iterables as well and will be unpacked as arguments. Hence
`func` and (a, b) becomes func(a, b).
)r} r r0 )r rA r~ r r r r
r s z Pool.starmapc C s | j ||t|||�S )z=
Asynchronous version of `starmap()` method.
)r} r )r rA r~ r �callback�error_callbackr r r
�
starmap_async s zPool.starmap_asyncc c sn y0d}x&t |�D ]\}}||||fi fV qW W n8 tk
rh } z ||d t|fi fV W Y dd}~X nX dS )z�Provides a generator of tasks for imap and imap_unordered with
appropriate handling for iterables which throw exceptions during
iteration.r N���)� enumerater7 r8 )r Z
result_jobrA r~ r@ �xrD r r r
�_guarded_task_generation s z Pool._guarded_task_generationr c C s� | j tkrtd��|dkrFt| j�}| jj| j|j||�|j f� |S |dksRt
�t j |||�}t| j�}| jj| j|jt
|�|j f� dd� |D �S dS )zP
Equivalent of `map()` -- can be MUCH slower than `Pool.map()`.
zPool not runningr c s s | ]}|D ]
}|V q
qd S )Nr )�.0�chunk�itemr r r
� <genexpr>@ s z Pool.imap.<locals>.<genexpr>N)rQ rP rW � IMapIteratorrO rN r/ r� �_job� _set_lengthr. r �
_get_tasksr )r rA r~ r rC � task_batchesr r r
�imap' s"
z Pool.imapc C s� | j tkrtd��|dkrFt| j�}| jj| j|j||�|j f� |S |dksRt
�t j |||�}t| j�}| jj| j|jt
|�|j f� dd� |D �S dS )zL
Like `imap()` method but ordering of results is arbitrary.
zPool not runningr c s s | ]}|D ]
}|V q
qd S )Nr )r� r� r� r r r
r� [ s z&Pool.imap_unordered.<locals>.<genexpr>N)rQ rP rW �IMapUnorderedIteratorrO rN r/ r� r� r� r. r r� r )r rA r~ r rC r� r r r
�imap_unorderedB s"
zPool.imap_unorderedc C sB | j tkrtd��t| j||�}| jj|jd|||fgdf� |S )z;
Asynchronous version of `apply()` method.
zPool not runningr N)rQ rP rW � ApplyResultrO rN r/ r� )r rA r rB r� r� rC r r r
r{ ] s
zPool.apply_asyncc C s | j ||t|||�S )z9
Asynchronous version of `map()` method.
)r} r )r rA r~ r r� r� r r r
� map_asynch s zPool.map_asyncc
C s� | j tkrtd��t|d�s$t|�}|dkrTtt|�t| j�d �\}}|rT|d7 }t|�dkrdd}tj |||�}t
| j |t|�||d�} | j j
| j| j||�df� | S )zY
Helper function to implement map, starmap and their async counterparts.
zPool not running�__len__N� r r )r� )rQ rP rW r1 r �divmodrp r[ r r� � MapResultrO rN r/ r� r� )
r rA r~ Zmapperr r� r� Zextrar� rC r r r
r} p s&
zPool._map_asyncc C sT t j� }x0|jtks$| jr8|jtkr8| j� tjd� q
W | j j
d � t j d� d S )Ng�������?zworker handler exiting)
r] �current_threadrQ rP rO � TERMINATErx �time�sleeprN r/ r r6 )�pool�threadr r r
r^ � s zPool._handle_workersc
C sj t j� }x�t| jd �D ]�\}}d }z�x�|D ]�}|jr@tjd� P y ||� W q* tk
r� } zD|d d� \}
} y||
j| d| f� W n t k
r� Y nX W Y d d } ~ X q*X q*W |r�tjd� |r�|d nd } || d � wP W d d } }}
X qW tjd� y:tjd� |j
d � tjd� x|D ]} |d � �q&W W n t k
�rZ tjd � Y nX tjd
� d S ) Nz'task handler found thread._state != RUNr Fzdoing set_length()r ztask handler got sentinelz/task handler sending sentinel to result handlerz(task handler sending sentinel to workersz/task handler got OSError when sending sentinelsztask handler exitingr� ) r] r� �iterr0 rQ r r6 r7 �_set�KeyErrorr/ r5 )
� taskqueuer/ r; r� �cacher� ZtaskseqZ
set_lengthr> rD r? �idx�pr r r
rb � sB
zPool._handle_tasksc C s� t j� }x�y
|� }W n" ttfk
r6 tjd� d S X |jrX|jtksLt�tjd� P |d krltjd� P |\}}}y|| j ||� W n t
k
r� Y nX d } }}q
W x�|o�|jtk�rJy
|� }W n" ttfk
r� tjd� d S X |d k�rtjd� q�|\}}}y|| j ||� W n t
k
�r: Y nX d } }}q�W t | d��r�tjd� y,x&t d�D ]}| j
j� �s�P |� �qnW W n ttfk
�r� Y nX tjdt|�|j� d S ) Nz.result handler got EOFError/OSError -- exitingz,result handler found thread._state=TERMINATEzresult handler got sentinelz&result handler ignoring extra sentinelr3 z"ensuring that outqueue is not full�
z7result handler exiting: len(cache)=%s, thread._state=%s)r] r� r5 r4 r r6 rQ r� r. r� r� r1 ro r3 �pollrp )r; r0 r� r� r> r? r@ �objr r r
rf � s\
zPool._handle_resultsc c s4 t |�}x&ttj||��}|s"d S | |fV q
W d S )N)r� �tupler �islice)rA �it�sizer� r r r
r� s zPool._get_tasksc C s t d��d S )Nz:pool objects cannot be passed between processes or pickled)�NotImplementedError)r r r r
r" s zPool.__reduce__c C s& t jd� | jtkr"t| _t| j_d S )Nz closing pool)r r6 rQ rP �CLOSEr_ )r r r r
r2 s
z
Pool.closec C s$ t jd� t| _t| j_| j� d S )Nzterminating pool)r r6 r� rQ r_ rk )r r r r
� terminate s
zPool.terminatec C sV t jd� | jttfks t�| jj� | jj� | j j� x| j
D ] }|j� qBW d S )Nz joining pool) r r6 rQ r� r� r. r_ r re rh r[ )r r� r r r
r s
z Pool.joinc C sD t jd� | jj� x*|j� r>| jj� r>| jj� tj d� qW d S )Nz7removing tasks from inqueue until task handler finishedr )
r r6 Z_rlock�acquire�is_aliver3 r� rz r� r� )r: � task_handlerr� r r r
�_help_stuff_finish( s
zPool._help_stuff_finishc
C sF t jd� t|_t|_t jd� | j||t|�� |j� sJt|�dksJt�t|_|jd � t jd� t j
� |k rx|j � |r�t |d d�r�t jd� x |D ]} | j
d kr�| j� q�W t jd� t j
� |k r�|j � t jd� t j
� |k r�|j � |�rBt |d d��rBt jd � x0|D ](} | j� �rt jd
| j � | j � �qW d S ) Nzfinalizing poolz&helping task handler/workers to finishr zjoining worker handlerr� zterminating workerszjoining task handlerzjoining result handlerzjoining pool workerszcleaning up worker %d)r r6 r� rQ r� rp r� r. r/ r] r� r r1 rq r� �pid)
�clsr� r: r; r� Zworker_handlerr� Zresult_handlerr� r� r r r
ri 1 s8
zPool._terminate_poolc C s | S )Nr )r r r r
� __enter___ s zPool.__enter__c C s | j � d S )N)r� )r �exc_typeZexc_valZexc_tbr r r
�__exit__b s z
Pool.__exit__)N)N)NNN)r )r )NNN)NNN)#r r r r* rs rH r rr r\ rx rK r| r
r r� r� r� r� r{ r� r} � staticmethodr^ rb rf r� r" r2 r� r r� � classmethodri r� r� r r r r
r � sF 8
. < .c @ s@ e Zd Zdd� Zdd� Zdd� Zddd �Zdd
d �Zd d
� ZdS )r� c C s4 t j� | _tt�| _|| _|| _|| _| || j< d S )N) r] ZEvent�_event�next� job_counterr� rO � _callback�_error_callback)r r� r� r� r r r
r k s
zApplyResult.__init__c C s
| j j� S )N)r� Zis_set)r r r r
�readys s zApplyResult.readyc C s | j � s t�| jS )N)r� r. �_success)r r r r
�
successfulv s zApplyResult.successfulNc C s | j j|� d S )N)r� �wait)r �timeoutr r r
r� z s zApplyResult.waitc C s, | j |� | j� st�| jr"| jS | j�d S )N)r� r� r r� �_value)r r� r r r
r0 } s
zApplyResult.getc C sV |\| _ | _| jr$| j r$| j| j� | jr>| j r>| j| j� | jj� | j| j= d S )N)r� r� r� r� r� �setrO r� )r r@ r� r r r
r� � s
zApplyResult._set)N)N) r r r r r� r� r� r0 r� r r r r
r� i s
r� c @ s e Zd Zdd� Zdd� ZdS )r� c C sf t j| |||d� d| _d g| | _|| _|dkrLd| _| jj� || j= n|| t || � | _d S )N)r� Tr )
r� r r� r� �
_chunksize� _number_leftr� r� r� �bool)r r� r �lengthr� r� r r r
r � s
zMapResult.__init__c C s� | j d8 _ |\}}|rp| jrp|| j|| j |d | j �< | j dkr�| jrZ| j| j� | j| j= | jj� nH| r�| jr�d| _|| _| j dkr�| j r�| j | j� | j| j= | jj� d S )Nr r F)
r� r� r� r� r� rO r� r� r� r� )r r@ Zsuccess_result�successrC r r r
r� � s"
zMapResult._setN)r r r r r� r r r r
r� � s
r� c @ s: e Zd Zdd� Zdd� Zd dd�ZeZdd � Zd
d � ZdS )
r� c C sJ t jt j� �| _tt�| _|| _tj � | _
d| _ d | _ i | _
| || j< d S )Nr )r] Z ConditionZLock�_condr� r� r� rO � collections�deque�_items�_index�_length� _unsorted)r r� r r r
r � s
zIMapIterator.__init__c C s | S )Nr )r r r r
�__iter__� s zIMapIterator.__iter__Nc C s� | j �~ y| jj� }W nh tk
r~ | j| jkr6t�| j j|� y| jj� }W n( tk
rx | j| jkrpt�t�Y nX Y nX W d Q R X |\}}|r�|S |�d S )N) r� r� �popleft�
IndexErrorr� r� �
StopIterationr� r )r r� r� r� r& r r r
r� � s" zIMapIterator.nextc
C s� | j �� | j|krr| jj|� | jd7 _x8| j| jkrd| jj| j�}| jj|� | jd7 _q.W | j j� n
|| j|< | j| jkr�| j| j = W d Q R X d S )Nr )
r� r� r� rt r� �pop�notifyr� rO r� )r r@ r� r r r
r� � s
zIMapIterator._setc C s< | j �, || _| j| jkr.| j j� | j| j= W d Q R X d S )N)r� r� r� r� rO r� )r r� r r r
r� � s
zIMapIterator._set_length)N) r r r r r� r� �__next__r� r� r r r r
r� � s
r� c @ s e Zd Zdd� ZdS )r� c
C sP | j �@ | jj|� | jd7 _| j j� | j| jkrB| j| j= W d Q R X d S )Nr )r� r� rt r� r� r� rO r� )r r@ r� r r r
r� s
zIMapUnorderedIterator._setN)r r r r� r r r r
r� � s r� c @ s@ e Zd ZdZedd� �Zddf fdd�Zdd� Zed d
� �ZdS ) r Fc O s ddl m} || |�S )Nr )rH )ZdummyrH )r rB rH r r r
rH s zThreadPool.ProcessNc C s t j| |||� d S )N)r r )r rl r< r= r r r
r s zThreadPool.__init__c C s, t j� | _t j� | _| jj| _| jj| _d S )N)rL rM rj rd r/ rc r0 rg )r r r r
rK s
zThreadPool._setup_queuesc
C s< | j �, | jj� | jjd g| � | j j� W d Q R X d S )N)Z not_emptyrL �clear�extendZ
notify_all)r: r� r� r r r
r� s
z ThreadPool._help_stuff_finish) r r r rs r� rH r rK r� r r r r
r s
)"�__all__r] rL r r� rU r� r r r r r rP r� r� �countr� r r r7 r r r! r$ rF r8 �objectr r� Z AsyncResultr� r� r� r r r r r
�<module>
s@ * \&)@
Mini Shell