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diZe�d�ZG dd� de�ZG dd� de�ZG dd� de�ZG dd� de�ZG dd� de�ZG dd � d e�ZG d d � d e�ZG d d � d e�Zd!d"� Z d#d$� Z d1d%d&�Z e� d'd(�Z defd)d*�Z!G d+d,� d,e�Z"G d-d.� d.e�Z#G d/d0� d0e$�Z%dS )2z"Brian Quinlan (brian@sweetapp.com)� N�FIRST_COMPLETED�FIRST_EXCEPTION�
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_AS_COMPLETED�PENDING�RUNNING� CANCELLED�CANCELLED_AND_NOTIFIED�FINISHED�pending�running� cancelled�finishedzconcurrent.futuresc @ s e Zd ZdZdS )�Errorz-Base class for all future-related exceptions.N)�__name__�
__module__� __qualname__�__doc__� r r �=/opt/alt/python37/lib64/python3.7/concurrent/futures/_base.pyr , s r c @ s e Zd ZdZdS )�CancelledErrorzThe Future was cancelled.N)r r r r r r r r r 0 s r c @ s e Zd ZdZdS )� TimeoutErrorz*The operation exceeded the given deadline.N)r r r r r r r r r 4 s r c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
S ) �_Waiterz;Provides the event that wait() and as_completed() block on.c C s t �� | _g | _d S )N)� threadingZEvent�event�finished_futures)�selfr r r �__init__: s
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�_AsCompletedWaiterzUsed by as_completed().c s t t| ��� t�� | _d S )N)�superr# r r �Lock�lock)r )� __class__r r r J s z_AsCompletedWaiter.__init__c s0 | j � tt| ��|� | j�� W d Q R X d S )N)r& r$ r# r r �set)r r )r' r r r N s z _AsCompletedWaiter.add_resultc s0 | j � tt| ��|� | j�� W d Q R X d S )N)r& r$ r# r! r r( )r r )r' r r r! S s z _AsCompletedWaiter.add_exceptionc s0 | j � tt| ��|� | j�� W d Q R X d S )N)r& r$ r# r" r r( )r r )r' r r r" X s z _AsCompletedWaiter.add_cancelled) r r r r r r r! r" �
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r# c s8 e Zd ZdZ� fdd�Z� fdd�Z� fdd�Z� ZS )�_FirstCompletedWaiterz*Used by wait(return_when=FIRST_COMPLETED).c s t � �|� | j�� d S )N)r$ r r r( )r r )r' r r r ` s z _FirstCompletedWaiter.add_resultc s t � �|� | j�� d S )N)r$ r! r r( )r r )r' r r r! d s z#_FirstCompletedWaiter.add_exceptionc s t � �|� | j�� d S )N)r$ r" r r( )r r )r' r r r" h s z#_FirstCompletedWaiter.add_cancelled)r r r r r r! r" r) r r )r' r r* ] s r* c sL e Zd ZdZ� fdd�Zdd� Z� fdd�Z� fdd �Z� fd
d �Z� Z S ) �_AllCompletedWaiterz<Used by wait(return_when=FIRST_EXCEPTION and ALL_COMPLETED).c s$ || _ || _t�� | _t� �� d S )N)�num_pending_calls�stop_on_exceptionr r% r& r$ r )r r, r- )r' r r r o s
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r r r r r r/ r r! r" r) r r )r' r r+ l s r+ c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) �_AcquireFutureszDA context manager that does an ordered acquire of Future conditions.c C s t |td�| _d S )N)�key)�sorted�id�futures)r r4 r r r r � s z_AcquireFutures.__init__c C s x| j D ]}|j�� qW d S )N)r4 �
_condition�acquire)r r r r r � __enter__� s z_AcquireFutures.__enter__c G s x| j D ]}|j�� qW d S )N)r4 r5 �release)r �argsr r r r �__exit__� s z_AcquireFutures.__exit__N)r r r r r r7 r: r r r r r0 � s r0 c C s� |t krt� }nZ|tkr t� }nJtdd� | D ��}|tkrHt|dd�}n"|tkr^t|dd�}n td| ��x| D ]}|j �
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)�.0�fr r r � <genexpr>� s z._create_and_install_waiters.<locals>.<genexpr>T)r- Fz Invalid return condition: %r) r r# r r* �sumr r+ r �
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Iterate on the list *fs*, yielding finished futures one by one in
reverse order.
Before yielding a future, *waiter* is removed from its waiters
and the future is removed from each set in the collection of sets
*ref_collect*.
The aim of this function is to avoid keeping stale references after
the future is yielded and before the iterator resumes.
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�� W dQ R X |�� t||| |fd�E dH q~W W dx,| D ]$}|j� |j�|� W dQ R X �q W X dS )an An iterator over the given futures that yields each as it completes.
Args:
fs: The sequence of Futures (possibly created by different Executors) to
iterate over.
timeout: The maximum number of seconds to wait. If None, then there
is no limit on the wait time.
Returns:
An iterator that yields the given Futures as they complete (finished or
cancelled). If any given Futures are duplicated, they will be returned
once.
Raises:
TimeoutError: If the entire result iterator could not be generated
before the given timeout.
Nc s s | ]}|j ttgkr|V qd S )N)r; r r
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|j� t|t| �| �S )a Wait for the futures in the given sequence to complete.
Args:
fs: The sequence of Futures (possibly created by different Executors) to
wait upon.
timeout: The maximum number of seconds to wait. If None, then there
is no limit on the wait time.
return_when: Indicates when this function should return. The options
are:
FIRST_COMPLETED - Return when any future finishes or is
cancelled.
FIRST_EXCEPTION - Return when any future finishes by raising an
exception. If no future raises an exception
then it is equivalent to ALL_COMPLETED.
ALL_COMPLETED - Return when all futures finish or are cancelled.
Returns:
A named 2-tuple of sets. The first set, named 'done', contains the
futures that completed (is finished or cancelled) before the wait
completed. The second set, named 'not_done', contains uncompleted
futures.
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zFuture._invoke_callbacksc C s� | j �v | jtkr`| jr<d| jjt| �t| j | jjjf S d| jjt| �t| j | jjjf S d| jjt| �t| j f S Q R X d S )Nz <%s at %#x state=%s raised %s>z <%s at %#x state=%s returned %s>z<%s at %#x state=%s>) r5 r; r
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zFuture.__repr__c C sR | j �: | jttgkrdS | jttgkr,dS t| _| j �� W dQ R X | �� dS )z�Cancel the future if possible.
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)r r r r rY y s z Future.donec C s | j r| j �n| jS d S )N)r\ r[ )r r r r Z __get_result~ s zFuture.__get_resultc C sd | j �& | jtttgkr(| j�|� dS W dQ R X y || � W n tk
r^ t� d| � Y nX dS )a% Attaches a callable that will be called when the future finishes.
Args:
fn: A callable that will be called with this future as its only
argument when the future completes or is cancelled. The callable
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it was added. If the future has already completed or been
cancelled then the callable will be called immediately. These
callables are called in the order that they were added.
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r] r r^ r_ rV )r �fnr r r �add_done_callback� s zFuture.add_done_callbackNc C sx | j �h | jttgkr t� �n| jtkr0| �� S | j �|� | jttgkrRt� �n| jtkrd| �� S t� �W dQ R X dS )aB Return the result of the call that the future represents.
Args:
timeout: The number of seconds to wait for the result if the future
isn't done. If None, then there is no limit on the wait time.
Returns:
The result of the call that the future represents.
Raises:
CancelledError: If the future was cancelled.
TimeoutError: If the future didn't finish executing before the given
timeout.
Exception: If the call raised then that exception will be raised.
N) r5 r; r r r r
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Future.resultc C st | j �d | jttgkr t� �n| jtkr.| jS | j �|� | jttgkrPt� �n| jtkr`| jS t� �W dQ R X dS )aU Return the exception raised by the call that the future represents.
Args:
timeout: The number of seconds to wait for the exception if the
future isn't done. If None, then there is no limit on the wait
time.
Returns:
The exception raised by the call that the future represents or None
if the call completed without raising.
Raises:
CancelledError: If the future was cancelled.
TimeoutError: If the future didn't finish executing before the given
timeout.
N) r5 r; r r r r
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zFuture.exceptionc C st | j �d | jtkr6t| _x| jD ]}|�| � q W dS | jtkrJt| _dS t� dt
| �| j� t d��W dQ R X dS )a� Mark the future as running or process any cancel notifications.
Should only be used by Executor implementations and unit tests.
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True) then any threads waiting on the future completing (though calls
to as_completed() or wait()) are notified and False is returned.
If the future was not cancelled then it is put in the running state
(future calls to running() will return True) and True is returned.
This method should be called by Executor implementations before
executing the work associated with this future. If this method returns
False then the work should not be executed.
Returns:
False if the Future was cancelled, True otherwise.
Raises:
RuntimeError: if this method was already called or if set_result()
or set_exception() was called.
FTz!Future %s in unexpected state: %szFuture in unexpected stateN) r5 r; r r rA r" r r r_ Zcriticalr3 � RuntimeError)r rD r r r � set_running_or_notify_cancel� s
z#Future.set_running_or_notify_cancelc C sN | j �6 || _t| _x| jD ]}|�| � q W | j �� W dQ R X | �� dS )z�Sets the return value of work associated with the future.
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set_result s zFuture.set_resultc C sN | j �6 || _t| _x| jD ]}|�| � q W | j �� W dQ R X | �� dS )z�Sets the result of the future as being the given exception.
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� Zdd� ZdS )�ExecutorzCThis is an abstract base class for concrete asynchronous executors.c O sB t | �dkrn*| s td��n d|kr8tdt | �d ��t� �dS )a Submits a callable to be executed with the given arguments.
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A Future representing the given call.
� z:descriptor 'submit' of 'Executor' object needs an argumentrf z6submit expected at least 1 positional argument, got %dr. N)rM � TypeError�NotImplementedError)r9 �kwargsr r r �submit s
zExecutor.submitNr. )rR � chunksizec sB �dk r�t �� � ��fdd�t|� D ��� ��fdd�}|� S )a} Returns an iterator equivalent to map(fn, iter).
Args:
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passed iterables.
timeout: The maximum number of seconds to wait. If None, then there
is no limit on the wait time.
chunksize: The size of the chunks the iterable will be broken into
before being passed to a child process. This argument is only
used by ProcessPoolExecutor; it is ignored by
ThreadPoolExecutor.
Returns:
An iterator equivalent to: map(func, *iterables) but the calls may
be evaluated out-of-order.
Raises:
TimeoutError: If the entire result iterator could not be generated
before the given timeout.
Exception: If fn(*args) raises for any values.
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z Executor.mapTc C s dS )a� Clean-up the resources associated with the Executor.
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methods can be called after this one.
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futures have finished executing and the resources used by the
executor have been reclaimed.
Nr )r rO r r r �shutdown^ s zExecutor.shutdownc C s | S )Nr )r r r r r7 k s zExecutor.__enter__c C s | j dd� dS )NT)rO F)rz )r �exc_typeZexc_valZexc_tbr r r r: n s zExecutor.__exit__)T) r r r r rs ry rz r7 r: r r r r rn s ,
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