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_AS_COMPLETEDPENDINGRUNNING CANCELLEDCANCELLED_AND_NOTIFIEDFINISHEDpendingrunning cancelledfinishedzconcurrent.futuresc @ s e Zd ZdZdS )Errorz-Base class for all future-related exceptions.N__name__
__module__ __qualname____doc__ r r 0/usr/lib64/python3.8/concurrent/futures/_base.pyr , s r c @ s e Zd ZdZdS )CancelledErrorzThe Future was cancelled.Nr r r r r r 0 s r c @ s e Zd ZdZdS ) TimeoutErrorz*The operation exceeded the given deadline.Nr r r r r r 4 s r c @ s e Zd ZdZdS )InvalidStateErrorz+The operation is not allowed in this state.Nr r r r r r 8 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) threadingZEventeventfinished_futuresselfr r r __init__> s
z_Waiter.__init__c C s | j | d S r r appendr futurer r r
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r c sD e Zd ZdZ fddZ fddZ fddZ fdd Z ZS )
_AsCompletedWaiterzUsed by as_completed().c s t t| t | _d S r )superr) r! r Locklockr __class__r r r! N s z_AsCompletedWaiter.__init__c s0 | j tt| | | j W 5 Q R X d S r )r, r* r) r& r setr$ r- r r r& R s z _AsCompletedWaiter.add_resultc s0 | j tt| | | j W 5 Q R X d S r )r, r* r) r' r r/ r$ r- r r r' W s z _AsCompletedWaiter.add_exceptionc s0 | j tt| | | j W 5 Q R X d S r )r, r* r) r( r r/ r$ r- r r r( \ s z _AsCompletedWaiter.add_cancelled) r r r r r! r& r' r(
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r) c s8 e Zd ZdZ fddZ fddZ fddZ ZS )_FirstCompletedWaiterz*Used by wait(return_when=FIRST_COMPLETED).c s t | | j d S r )r* r& r r/ r$ r- r r r& d s z _FirstCompletedWaiter.add_resultc s t | | j d S r )r* r' r r/ r$ r- r r r' h s z#_FirstCompletedWaiter.add_exceptionc s t | | j d S r )r* r( r r/ r$ r- r r r( l s z#_FirstCompletedWaiter.add_cancelled)r r r r r& r' r( r0 r r r- r r1 a s r1 c sL e Zd ZdZ fddZdd Z fddZ fdd Z fd
d Z Z S ) _AllCompletedWaiterz rA r r r r r7 s r7 c C s |t krt }nZ|tkr t }nJtdd | D }|tkrHt|dd}n"|tkr^t|dd}n td| | D ]}|j
| qn|S )Nc s s | ]}|j ttfkV qd S r _stater r
.0fr r r s z._create_and_install_waiters..T)r4 Fz Invalid return condition: %r) r r) r r1 sumr r2 r
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pending_countrF r r r _create_and_install_waiters s rN c c sP | rL| d }|D ]}| | q|j |j | W 5 Q R X ~| V q dS )a~
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.
N)remover< rJ pop)rK rM ref_collectrF Z futures_setr r r _yield_finished_futures s rS c c sB |dk r|t }t| } t| }t| * tdd | D }| | }t| t}W 5 Q R X t|}zt ||| fdE dH |r|dkrd}n(|t }|dk rt dt||f |j
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| W 5 Q R X qX 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 ttfkr|V qd S r rB rD r r r rG s z as_completed..)rR r z %d (of %d) futures unfinished)time monotonicr/ lenr7 rN r listr< rJ rP rS r r waitr, r clearreverse) rK timeoutend_timeZ
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t | tdd | D }t| | }|tkrJ|rJt||W 5 Q R S |tkr~|r~tdd |D r~t||W 5 Q R S t|t| krt||W 5 Q R S t| |}W 5 Q R X |j | | D ]"}|j
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|j t|t| | S )a Wait for the futures in the given sequence to complete.
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fs: The sequence of Futures (possibly created by different Executors) to
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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.
c s s | ]}|j ttfkr|V qd S r rB rD r r r rG ! s zwait..c s s& | ] }| s| d k r|V qd S r )r
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d ddZdd Zdd Zd d ZdS )!Futurez5Represents the result of an asynchronous computation.c C s, t | _t| _d| _d| _g | _g | _dS )z8Initializes the future. Should not be called by clients.N) r Z Conditionr< r rC _result
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C s | j | jtkrx| jrHd| jjt| t| j | jjjf W 5 Q R S d| jjt| t| j | jjjf W 5 Q R S d| jjt| t| j f W 5 Q R 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>) r< rC r
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zFuture.__repr__c C sf | j N | jttfkr$W 5 Q R dS | jttfkr@W 5 Q R dS t| _| j W 5 Q R X | dS )zCancel the future if possible.
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cannot be cancelled if it is running or has already completed.
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C s, | j | jttfkW 5 Q R S Q R X dS )z(Return True if the future was cancelled.N)r< rC r r r r r r r
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C s( | j | jtkW 5 Q R S Q R X dS )z1Return True if the future is currently executing.N)r< rC r r r r r r x s zFuture.runningc
C s. | j | jtttfkW 5 Q R S Q R X dS )z>Return True of the future was cancelled or finished executing.N)r< rC r r r
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| j W 5 d } X n| jS d S r )re rd r r r r Z __get_result s
zFuture.__get_resultc C sn | j 0 | jtttfkr2| j| W 5 Q R dS W 5 Q R X z || W n tk
rh t d| Y nX dS )a% Attaches a callable that will be called when the future finishes.
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argument when the future completes or is cancelled. The callable
will always be called by a thread in the same process in which
it was added. If the future has already completed or been
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callables are called in the order that they were added.
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rf r# rh ri r_ )r fnr r r add_done_callback s zFuture.add_done_callbackNc
C s z| j | jttfkr t n"| jtkrB| W 5 Q R W ZS | j | | jttfkrdt n(| jtkr| W 5 Q R W S t W 5 Q R X W 5 d} 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) r< rC r r r r
_Future__get_resultrX r r r[ r r r result s
z
Future.resultc
C s | j | | jttfkr t n | jtkr:| jW 5 Q R S | j | | jttfkr\t n"| jtkrx| jW 5 Q R S t W 5 Q 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) r< rC r r r r
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zFuture.exceptionc C s | j t | jtkrddl}|jdtdd ntdt | d t dS )
a Submits a callable to be executed with the given arguments.
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z:descriptor 'submit' of 'Executor' object needs an argumentrp r Nz.Passing 'fn' as keyword argument is deprecated)
stacklevelz6submit expected at least 1 positional argument, got %dr5 )rV TypeErrorwarningswarnDeprecationWarningNotImplementedError)r@ kwargsr r r r submit. s
zExecutor.submitz ($self, fn, /, *args, **kwargs)Nr5 )r[ chunksizec sB dk rt fddt| D fdd}| S )a} Returns an iterator equivalent to map(fn, iter).
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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.
Nc s g | ]}j f| qS r )r )rE r@ )rp r r r
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z Executor.mapTc C s dS )a Clean-up the resources associated with the Executor.
It is safe to call this method several times. Otherwise, no other
methods can be called after this one.
Args:
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futures have finished executing and the resources used by the
executor have been reclaimed.
Nr )r rX r r r shutdowns s zExecutor.shutdownc C s | S r r r r r r r> s zExecutor.__enter__c C s | j dd dS )NT)rX F)r )r exc_typeZexc_valZexc_tbr r r rA s zExecutor.__exit__)T)
r r r r r __text_signature__r r r> rA r r r r r{ + s ,
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