U e5dY @spdZddlZddlZddlZddlZdZdZdZdZdZ dZ d Z d Z d Z e e e e e gZe d e d e de de diZedZGdddeZGdddeZGdddeZGdddeZGdddeZGdddeZGdddeZGdd d eZGd!d"d"eZd#d$Zd%d&Zd3d'd(Ze d)d*Z!defd+d,Z"Gd-d.d.eZ#Gd/d0d0eZ$Gd1d2d2e%Z&dS)4z"Brian Quinlan (brian@sweetapp.com)NFIRST_COMPLETEDFIRST_EXCEPTION ALL_COMPLETED _AS_COMPLETEDPENDINGRUNNING CANCELLEDCANCELLED_AND_NOTIFIEDFINISHEDpendingrunning cancelledfinishedzconcurrent.futuresc@seZdZdZdS)Errorz-Base class for all future-related exceptions.N__name__ __module__ __qualname____doc__rr0/usr/lib64/python3.8/concurrent/futures/_base.pyr,src@seZdZdZdS)CancelledErrorzThe Future was cancelled.Nrrrrrr0src@seZdZdZdS) TimeoutErrorz*The operation exceeded the given deadline.Nrrrrrr4src@seZdZdZdS)InvalidStateErrorz+The operation is not allowed in this state.Nrrrrrr8src@s0eZdZdZddZddZddZdd Zd S) _Waiterz;Provides the event that wait() and as_completed() block on.cCst|_g|_dSN) threadingZEventeventfinished_futuresselfrrr__init__>s z_Waiter.__init__cCs|j|dSrrappendr futurerrr add_resultBsz_Waiter.add_resultcCs|j|dSrr"r$rrr add_exceptionEsz_Waiter.add_exceptioncCs|j|dSrr"r$rrr add_cancelledHsz_Waiter.add_cancelledN)rrrrr!r&r'r(rrrrr<s rcsDeZdZdZfddZfddZfddZfdd ZZS) _AsCompletedWaiterzUsed by as_completed().cstt|t|_dSr)superr)r!rLocklockr __class__rrr!Nsz_AsCompletedWaiter.__init__c s0|j tt|||jW5QRXdSr)r,r*r)r&rsetr$r-rrr&Rsz_AsCompletedWaiter.add_resultc s0|j tt|||jW5QRXdSr)r,r*r)r'rr/r$r-rrr'Wsz _AsCompletedWaiter.add_exceptionc s0|j tt|||jW5QRXdSr)r,r*r)r(rr/r$r-rrr(\sz _AsCompletedWaiter.add_cancelled) rrrrr!r&r'r( __classcell__rrr-rr)Ks    r)cs8eZdZdZfddZfddZfddZZS)_FirstCompletedWaiterz*Used by wait(return_when=FIRST_COMPLETED).cst||jdSr)r*r&rr/r$r-rrr&ds z _FirstCompletedWaiter.add_resultcst||jdSr)r*r'rr/r$r-rrr'hs z#_FirstCompletedWaiter.add_exceptioncst||jdSr)r*r(rr/r$r-rrr(ls z#_FirstCompletedWaiter.add_cancelled)rrrrr&r'r(r0rrr-rr1as  r1csLeZdZdZfddZddZfddZfdd Zfd d ZZ S) _AllCompletedWaiterzrArrrrr7sr7cCs|tkrt}nZ|tkr t}nJtdd|D}|tkrHt|dd}n"|tkr^t|dd}n td||D]}|j |qn|S)Ncss|]}|jttfkVqdSr_stater r .0frrr sz._create_and_install_waiters..T)r4FzInvalid return condition: %r) rr)rr1sumrr2r ValueError_waitersr#)fs return_whenwaiterZ pending_countrFrrr_create_and_install_waiterss rNc csP|rL|d}|D]}||q|j|j|W5QRX~|VqdS)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<rJpop)rKrM ref_collectrFZ futures_setrrr_yield_finished_futuress  rSc csB|dk r|t}t|}t|}t|*tdd|D}||}t|t}W5QRXt|}zt |||fdEdH|r|dkrd}n(|t}|dkrt dt||f|j ||j|j}g|_|j W5QRX|t ||||fdEdHq|W5|D]$}|j|j |W5QRXqXdS)anAn 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. Ncss |]}|jttfkr|VqdSrrBrDrrrrGszas_completed..)rRrz%d (of %d) futures unfinished)time monotonicr/lenr7rNrlistr<rJrPrSrrwaitr,rclearreverse) rKtimeoutend_timeZ total_futuresrr rMrFZ wait_timeoutrrr as_completedsL     r]DoneAndNotDoneFuturesz done not_donec Cs t|tdd|D}t||}|tkrJ|rJt||W5QRS|tkr~|r~tdd|Dr~t||W5QRSt|t|krt||W5QRSt||}W5QRX|j ||D]"}|j |j |W5QRXq| |jt|t||S)aWait 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. css |]}|jttfkr|VqdSrrBrDrrrrG!szwait..css&|]}|s|dk r|VqdSr)r exceptionrDrrrrG(s )r7r/rr^ranyrVrNrrXr<rJrPupdater)rKr[rLdoneZnot_donerMrFrrrrXs"      rXc@seZdZdZddZddZddZdd Zd d Zd d Z ddZ ddZ ddZ dddZ d ddZddZddZddZdS)!Futurez5Represents the result of an asynchronous computation.cCs,t|_t|_d|_d|_g|_g|_dS)z8Initializes the future. Should not be called by clients.N) rZ Conditionr<rrC_result _exceptionrJ_done_callbacksrrrrr!<s  zFuture.__init__c Cs>|jD]2}z ||Wqtk r6td|YqXqdS)N!exception calling callback for %r)rf ExceptionLOGGERr_)r callbackrrr_invoke_callbacksEs   zFuture._invoke_callbacksc Cs|j|jtkrx|jrHd|jjt|t|j|jjjfW5QRSd|jjt|t|j|jjjfW5QRSd|jjt|t|jfW5QRSQRXdS)Nz<%s at %#x state=%s raised %s>z <%s at %#x state=%s returned %s>z<%s at %#x state=%s>) r<rCr rer.rr:_STATE_TO_DESCRIPTION_MAPrdrrrr__repr__Ls( zFuture.__repr__c Csf|jN|jttfkr$W5QRdS|jttfkr@W5QRdSt|_|jW5QRX|dS)zCancel the future if possible. Returns True if the future was cancelled, False otherwise. A future cannot be cancelled if it is running or has already completed. FT)r<rCrr rr notify_allrkrrrrcancel`sz Future.cancelc Cs,|j|jttfkW5QRSQRXdS)z(Return True if the future was cancelled.N)r<rCrr rrrrr sszFuture.cancelledc Cs(|j|jtkW5QRSQRXdS)z1Return True if the future is currently executing.N)r<rCrrrrrr xszFuture.runningc Cs.|j|jtttfkW5QRSQRXdS)z>Return True of the future was cancelled or finished executing.N)r<rCrr r rrrrrb}sz Future.donecCs$|jrz |jW5d}Xn|jSdSr)rerdrrrrZ __get_results  zFuture.__get_resultc Csn|j0|jtttfkr2|j|W5QRdSW5QRXz ||Wn tk rht d|YnXdS)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 will always be called by a thread in the same process in which 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. Nrg) r<rCrr r rfr#rhrir_)r fnrrradd_done_callbacks   zFuture.add_done_callbackNc Csz|j|jttfkr tn"|jtkrB|W5QRWZS|j||jttfkrdtn(|jtkr|W5QRWStW5QRXW5d}XdS)aBReturn 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<rCrr rr _Future__get_resultrXrr r[rrrresults   z Future.resultc Cs|j||jttfkrtn|jtkr:|jW5QRS|j||jttfkr\tn"|jtkrx|jW5QRStW5QRXdS)aUReturn 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<rCrr rr rerXrrsrrrr_s   zFuture.exceptionc Cs|jt|jtkrddl}|jdtddntdt|d tdS) a Submits a callable to be executed with the given arguments. Schedules the callable to be executed as fn(*args, **kwargs) and returns a Future instance representing the execution of the callable. Returns: A Future representing the given call. z:descriptor 'submit' of 'Executor' object needs an argumentrprNz.Passing 'fn' as keyword argument is deprecated) stacklevelz6submit expected at least 1 positional argument, got %dr5)rV TypeErrorwarningswarnDeprecationWarningNotImplementedError)r@kwargsrrrrsubmit.s   zExecutor.submitz($self, fn, /, *args, **kwargs)Nr5)r[ chunksizecsBdk rtfddt|Dfdd}|S)a}Returns an iterator equivalent to map(fn, iter). 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Otherwise, no other methods can be called after this one. Args: wait: If True then shutdown will not return until all running futures have finished executing and the resources used by the executor have been reclaimed. Nr)r rXrrrshutdownss zExecutor.shutdowncCs|Srrrrrrr>szExecutor.__enter__cCs|jdddS)NT)rXF)r)r exc_typeZexc_valZexc_tbrrrrAs zExecutor.__exit__)T) rrrrr__text_signature__rrr>rArrrrr{+s, r{c@seZdZdZdS)BrokenExecutorzR Raised when a executor has become non-functional after a severe failure. Nrrrrrrsr)N)' __author__ collectionsZloggingrrTrrrrrrrr r Z_FUTURE_STATESrlZ getLoggerrirhrrrrobjectrr)r1r2r7rNrSr] namedtupler^rXrcr{rurrrrrsh   >1s]