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If not given, value defaults to 1. cb|dkr tdtt|_||_y)Nrz$semaphore initial value must be >= 0)rr r_cond_value)rFvalues r&rGzSemaphore.__init__s* 19CD Dtv&  r%c |j}d|jd|jdt|dd|jd S)N<. at #x: value=>)rNrOrPrRrrFclss r&rTzSemaphore.__repr__sKnnCNN#1S%5%5$6d2d8B-H++a) *r%Ncb|s | tdd}d}|j5|jdk(rS|sng|#|t|z}n|tz }|dkrnB|jj ||jdk(rS|xjdzc_d}ddd|S#1swY|SxYw)aAcquire a semaphore, decrementing the internal counter by one. When invoked without arguments: if the internal counter is larger than zero on entry, decrement it by one and return immediately. If it is zero on entry, block, waiting until some other thread has called release() to make it larger than zero. This is done with proper interlocking so that if multiple acquire() calls are blocked, release() will wake exactly one of them up. The implementation may pick one at random, so the order in which blocked threads are awakened should not be relied on. There is no return value in this case. When invoked with blocking set to true, do the same thing as when called without arguments, and return true. When invoked with blocking set to false, do not block. If a call without an argument would block, return false immediately; otherwise, do the same thing as when called without arguments, and return true. When invoked with a timeout other than None, it will block for at most timeout seconds. If acquire does not complete successfully in that interval, return false. Return true otherwise. Nz.can't specify timeout for non-blocking acquireFrrXT)rrrrr)rFrZr[r]rs r&rYzSemaphore.acquires0G/MN N  ZZ ++"&"''G"3")EG"3"a<! (++" q     sA"B$B$$B.c|dkr td|j5|xj|z c_|jj|dddy#1swYyxYw)zRelease a semaphore, incrementing the internal counter by one or more. When the counter is zero on entry and another thread is waiting for it to become larger than zero again, wake up that thread. rXn must be one or moreN)rrrrrFrs r&razSemaphore.releasesS q545 5 ZZ ! KK1 K JJ  a  ! ! !s 1AA c$|jyrcrdres r&rizSemaphore.__exit__rjr%r)TN) rvrOrPrwrGrTrYrxrarir$r%r&rrs( * +ZI !r%rc2eZdZdZdfd ZdZddZxZS)raImplements a bounded semaphore. A bounded semaphore checks to make sure its current value doesn't exceed its initial value. If it does, ValueError is raised. In most situations semaphores are used to guard resources with limited capacity. If the semaphore is released too many times it's a sign of a bug. If not given, value defaults to 1. Like regular semaphores, bounded semaphores manage a counter representing the number of release() calls minus the number of acquire() calls, plus an initial value. The acquire() method blocks if necessary until it can return without making the counter negative. If not given, value defaults to 1. c2t||||_yrc)superrG_initial_value)rFrrNs r&rGzBoundedSemaphore.__init__%s #r%c |j}d|jd|jdt|dd|jd|j d S)Nrrrrr/r)rNrOrPrRrrrs r&rTzBoundedSemaphore.__repr__)sYnnCNN#1S%5%5$6d2d8B-H++a(;(;'Release a semaphore, incrementing the internal counter by one or more. When the counter is zero on entry and another thread is waiting for it to become larger than zero again, wake up that thread. If the number of releases exceeds the number of acquires, raise a ValueError. rXrz!Semaphore released too many timesN)rrrrrrs r&razBoundedSemaphore.release.su q545 5 ZZ !{{Q!4!44 !DEE KK1 K JJ  a  ! ! !s AA>>Br)rvrOrPrwrGrTra __classcell__)rNs@r&rrs $@ !r%rcBeZdZdZdZdZdZdZdZdZ dZ d d Z y ) rzClass implementing event objects. Events manage a flag that can be set to true with the set() method and reset to false with the clear() method. The wait() method blocks until the flag is true. The flag is initially false. cBtt|_d|_y)NF)r rr_flagrEs r&rGzEvent.__init__Lstv&  r%c |j}|jrdnd}d|jd|jdt |dd|d S) Nsetunsetrrrrz: r)rNrrOrPrR)rFrstatuss r&rTzEvent.__repr__PsLnn**'3>>"!C$4$4#5T"T(2bPQRRr%c8|jjyrc)rrVrEs r&rVzEvent._at_fork_reinitUs ""$r%c|jS)z5Return true if and only if the internal flag is true.)rrEs r&is_setz Event.is_setYs zzr%cZddl}|jdtd|jS)zyReturn true if and only if the internal flag is true. This method is deprecated, use is_set() instead. rNz+isSet() is deprecated, use is_set() insteadrr)rrrrrs r&isSetz Event.isSet]s,  C(Q  8{{}r%c|j5d|_|jjdddy#1swYyxYw)zSet the internal flag to true. All threads waiting for it to become true are awakened. Threads that call wait() once the flag is true will not block at all. TN)rrrrEs r&rz Event.seths7ZZ $DJ JJ ! ! # $ $ $s "8AcT|j5d|_dddy#1swYyxYw)zReset the internal flag to false. Subsequently, threads calling wait() will block until set() is called to set the internal flag to true again. FN)rrrEs r&rz Event.clearss'ZZ DJ   s'Nc|j5|j}|s|jj|}|cdddS#1swYyxYw)aHBlock until the internal flag is true. If the internal flag is true on entry, return immediately. Otherwise, block until another thread calls set() to set the flag to true, or until the optional timeout occurs. When the timeout argument is present and not None, it should be a floating point number specifying a timeout for the operation in seconds (or fractions thereof). This method returns the internal flag on exit, so it will always return True except if a timeout is given and the operation times out. N)rrr)rFr[signaleds r&rz Event.wait}sAZZ zzH::??73    s +AA rc) rvrOrPrwrGrTrVrrrrrr$r%r&rrAs0S %  $r%rceZdZdZddZdZddZdZdZdZ d Z d Z d Z d Z ed ZedZedZy)rzImplements a Barrier. Useful for synchronizing a fixed number of threads at known synchronization points. Threads block on 'wait()' and are simultaneously awoken once they have all made that call. Ncztt|_||_||_||_d|_d|_y)aWCreate a barrier, initialised to 'parties' threads. 'action' is a callable which, when supplied, will be called by one of the threads after they have all entered the barrier and just prior to releasing them all. If a 'timeout' is provided, it is used as the default for all subsequent 'wait()' calls. rN)r rr_action_timeout_parties_staterD)rFpartiesactionr[s r&rGzBarrier.__init__s5tv&      r%c |j}|jr*d|jd|jdt |ddSd|jd|jdt |dd|j d|j d S) Nrrrrz : broken>z : waiters=rr)rNbrokenrOrPrR n_waitingrrs r&rTzBarrier.__repr__snn ;;s~~&a(8(8'9bhr])T TCNN#1S%5%5$6d2d8B-H NN+1T\\N!= >r%c| |j}|j5|j|j}|xjdz c_ |dz|jk(r|j n|j |||xjdzc_|jcdddS#|xjdzc_|jwxYw#1swYyxYw)aNWait for the barrier. When the specified number of threads have started waiting, they are all simultaneously awoken. If an 'action' was provided for the barrier, one of the threads will have executed that callback prior to returning. Returns an individual index number from 0 to 'parties-1'. NrX)rr_enterrDr_release_wait_exit)rFr[indexs r&rz Barrier.waits ?mmG ZZ  KKMKKE KK1 K 19 -MMOJJw' q     q    s#2C5B2%C2'CCC%c|jdvr)|jj|jdvr)|jdkrt|jdk(sJy)NrurXr)rrrrrEs r&rzBarrier._entersOkkW$ JJOO kkW$ ;;?$ ${{ar%c |jr|jd|_|jjy#|j xYw)NrX)rrrr_breakrEs r&rzBarrier._releasesA || DK JJ ! ! #  KKM s =AAcjjfd|sjtjdkrtjdk(sJy)Nc"jdk7Sr@rrEsr&zBarrier._wait..sDKK1,<r%rrX)rrrrrrFr[s` r&rz Barrier._waitsJzz""#cf|j5|jdddy#1swYyxYw)zPlace the barrier into a 'broken' state. Useful in case of error. Any currently waiting threads and threads attempting to 'wait()' will have BrokenBarrierError raised. N)rrrEs r&abortz Barrier.aborts)ZZ  KKM   s'0cFd|_|jjy)Nr)rrrrEs r&rzBarrier._break%s  r%c|jS)z:Return the number of threads required to trip the barrier.)rrEs r&rzBarrier.parties+s}}r%c:|jdk(r |jSy)z>Return the number of threads currently waiting at the barrier.r)rrDrEs r&rzBarrier.n_waiting0s ;;! ;; r%c |jdk(S)z0Return True if the barrier is in a broken state.rrrEs r&rzBarrier.broken9s{{b  r%NNrc)rvrOrPrwrGrTrrrrrrrrpropertyrrrr$r%r&rrsu ><   ($( !!r%rc eZdZy)rN)rvrOrPr$r%r&rr?sr%rrXc|tzSrc)_counter) name_templates r&_newnamerEs 8: %%r%ctDcgc]}|jr|}}tj|ycc}w)a! Drop any shutdown locks that don't correspond to running threads anymore. Calling this from time to time avoids an ever-growing _shutdown_locks set when Thread objects are not joined explicitly. See bpo-37788. This must be called with _shutdown_locks_lock acquired. N)_shutdown_locksrIdifference_update)r to_removes r&_maintain_shutdown_locksrWs3#2G$GIG%%i0Hs;;c&eZdZdZdZ ddddZdZdZdZd Z d Z d Z e rd Z d ZdZdZdZddZd dZedZej,dZedZe redZdZedZej,dZdZdZdZdZy)!raA class that represents a thread of control. This class can be safely subclassed in a limited fashion. There are two ways to specify the activity: by passing a callable object to the constructor, or by overriding the run() method in a subclass. FN)daemonc,|Jd|i}|r t|}n#td}| |j}|d|dz }||_||_||_||_||rts td||_ ntj|_ d|_ trd|_d|_t#|_d|_d|_t*j,|_t1|_t4j7|y#t$rYwxYw) aUThis constructor should always be called with keyword arguments. Arguments are: *group* should be None; reserved for future extension when a ThreadGroup class is implemented. *target* is the callable object to be invoked by the run() method. Defaults to None, meaning nothing is called. *name* is the thread name. By default, a unique name is constructed of the form "Thread-N" where N is a small decimal number. *args* is a list or tuple of arguments for the target invocation. Defaults to (). *kwargs* is a dictionary of keyword arguments for the target invocation. Defaults to {}. If a subclass overrides the constructor, it must make sure to invoke the base class constructor (Thread.__init__()) before doing anything else to the thread. Nz#group argument must be None for nowz Thread-%dz ()z4daemon threads are disabled in this (sub)interpreterFT)strrrvAttributeError_target_name_args_kwargs_daemon_threads_allowedr` _daemonicr r_ident_HAVE_THREAD_NATIVE_ID _native_id _tstate_lockr_started _is_stopped _initializedr/stderr_stderr_make_invoke_excepthook_invoke_excepthook _danglingadd)rFgrouptargetrLr;r<r target_names r&rGzThread.__init__rs.}CCC} >F t9DK(D!"(//Kb Q//D     57"#YZZ#DN+-44DN !"DO    {{ "9"; d1&sD DDc|jj|rB|j5|jj|jjyyd|_d|_yr#)rrVrrYr)rFis_alives r&_reset_internal_lockszThread._reset_internal_lockss` %%'   ,!!113!!))+- $D  $D r%cR|jsJdd}|jjrd}|j|jrd}|j r|dz }|j |d|j zz }d|jjd|jd |d S) Nz Thread.__init__() was not calledinitialstartedstoppedz daemonz %sr(z, z)>) rrrr#rrrrNrvr )rFrs r&rTzThread.__repr__s  D"DD  ==   !F    F >> i F ;; " edkk) )F!%!8!8$**fMMr%c|js td|jjr tdt5|t |<ddd t |jd|jjy#1swY;xYw#t$r$t5t |=ddd#1swYxYwwxYw)a-Start the thread's activity. It must be called at most once per thread object. It arranges for the object's run() method to be invoked in a separate thread of control. This method will raise a RuntimeError if called more than once on the same thread object. zthread.__init__() not calledz threads can only be started onceNr$) rr`rr_active_limbo_lock_limbo_start_new_thread _bootstrap ExceptionrrEs r&startz Thread.starts  => > ==   !AB B  F4L   door 2    # !4L !  !  s0 BBBC"B3* C3B< 8Cc |j&|j|ji|j|`|`|`y#|`|`|`wxYw)aXMethod representing the thread's activity. You may override this method in a subclass. The standard run() method invokes the callable object passed to the object's constructor as the target argument, if any, with sequential and keyword arguments taken from the args and kwargs arguments, respectively. N)r rrrEs r&runz Thread.runsI 7||' djj9DLL9 dj$, dj$,s 2;AcZ |jy#|jrtYyxYwrc)_bootstrap_innerrr/rEs r&r.zThread._bootstraps+   ! ! # ~~$, s **c"t|_yrc)rrrEs r& _set_identzThread._set_ident s k r%c"t|_yrc)r(rrEs r&_set_native_idzThread._set_native_ids +oDOr%ct|_|jj|js9t5t t j|jdddyy#1swYyxYw)z Set a lock object which will be released by the interpreter when the underlying thread state (see pystate.h) gets deleted. N) _set_sentinelrrYr_shutdown_locks_lockrrrrEs r&_set_tstate_lockzThread._set_tstate_locksc *O !!#{{% 7(*##D$5$56 7 7 7 7s *A00A9c( |j|jtr|j|jj t 5|t|j<t|=dddtrtjttrtjt |j|j#y#1swYixYw#|j!|Y2xYw#|j#wxYwrc)r6r<rr8rrr+rKrr,r4r/rr+rr2r_deleterEs r&r4zThread._bootstrap_inner s  OO   ! ! #%##% MM   # !'+ $4L ! k* . .  LLN ! ! .''- LLNs7AC?C3AC?:C'C$ C?'C<:C??Dc|j}||jrJd|_d|_|jst5t dddyy#1swYyxYwr#)rrIrrr;rrs r&_stopz Thread._stop7sc"    {{} $$ {{% +(* + + + +s  AAcXt5tt=dddy#1swYyxYw)zARemove current thread from the dict of currently running threads.N)r+rKrrEs r&r>zThread._deleteRs$  % $ % % %s )c|js td|jjs td|t ur td||j y|j t |dy)aWait until the thread terminates. This blocks the calling thread until the thread whose join() method is called terminates -- either normally or through an unhandled exception or until the optional timeout occurs. When the timeout argument is present and not None, it should be a floating point number specifying a timeout for the operation in seconds (or fractions thereof). As join() always returns None, you must call is_alive() after join() to decide whether a timeout happened -- if the thread is still alive, the join() call timed out. When the timeout argument is not present or None, the operation will block until the thread terminates. A thread can be join()ed many times. join() raises a RuntimeError if an attempt is made to join the current thread as that would cause a deadlock. It is also an error to join() a thread before it has been started and attempts to do so raises the same exception. Thread.__init__() not calledz'cannot join thread before it is startedzcannot join current threadNr)r[)rr`rrr _wait_for_tstate_lockmaxrs r&joinz Thread.join[sv0  => >}}##%HI I ># #;< < ?  & & (  & &s7A & ?r%c|j}||jsJy |j||r!|j|j yy#|j r |j|j xYwrc)rrrYrar@rI)rFblockr[rs r&rDzThread._wait_for_tstate_locksw   <## ##  ||E7+  , {{}   s 2A3Bc@|jsJd|jS)zA string used for identification purposes only. It has no semantics. Multiple threads may be given the same name. The initial name is set by the constructor. rC)rr rEs r&rLz Thread.names#  @"@@ zzr%cJ|jsJdt||_y)NrC)rr r )rFrLs r&rLz Thread.names"  @"@@ Y r%c@|jsJd|jS)a4Thread identifier of this thread or None if it has not been started. This is a nonzero integer. 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NzException in thread :Tfileflush)rf) exc_type SystemExitr/rthreadrrLrprint_print_exception exc_value exc_tracebackrg)r;rrLs r&rr's ==J &    7[[F [[ $[[((F~  ;; ";;##D;D $TF!, '8J8J$ & r%cttj td tdtjttfd}|S)Nzthreading.excepthook is Nonezsys.excepthook is NonecX t}|}tg |}||d}y#t$rm}d|_~j j}n |j }d|dj j}n }| Yd}~d}yd}~wwxYw#d}wxYw)NTz"Exception in threading.excepthook:re)rrr/__suppress_context__rr) rjhookr;excrsys_excepthook local_print local_sysold_excepthookold_sys_excepthook sys_exc_infos r&invoke_excepthookz2_make_invoke_excepthook..invoke_excepthookZs D|%!";LN";F";    !    !  (#'GDKK  ( ( (s /B  BN)rvrOrPrGr$r%r&rrs(r%rc&eZdZdZdZdZddZy) _DummyThreadc2tj|tdt|jj |j tr|jt5|t|j<dddy#1swYyxYw)NzDummy-%dr) rrGrrrrr6rr8r+rKrrEs r&rGz_DummyThread.__init__sq8J#768  :   !    !  (#'GDKK  ( ( (s 0B  Bcyrcr$rEs r&r@z_DummyThread._stops r%cT|js|jjsJyr#)rrrrEs r&r#z_DummyThread.is_alives### (<(<(>>>r%NcJd)Nzcannot join a dummy threadr$rs r&rFz_DummyThread.joins 222ur%rc)rvrOrPrGr@r#rFr$r%r&rrs( 3r%rcX ttS#t$r tcYSwxYw)zReturn the current Thread object, corresponding to the caller's thread of control. If the caller's thread of control was not created through the threading module, a dummy thread object with limited functionality is returned. )rKrrMrr$r%r&r r s+y{## ~s ))cNddl}|jdtdtS)zReturn the current Thread object, corresponding to the caller's thread of control. This function is deprecated, use current_thread() instead. rNz;currentThread() is deprecated, use current_thread() insteadrr)rrrr rs r& currentThreadrs)  MMO$4  r%cxt5ttttzcdddS#1swYyxYw)zReturn the number of Thread objects currently alive. The returned count is equal to the length of the list returned by enumerate(). 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For similarity to atexit, the registered functions are called in reverse. z$can't register atexit after shutdownN)_SHUTTING_DOWNr` functoolspartial_threading_atexitsr)r-argr<calls r&_register_atexitr s;ABB   T 2C 26 2Dd#r%)rctjr trydat t D] }| tj tk(rKtj}|J|jsJ|jtjn t5tt}tjdddsy|D]"}|j!|j$]#1swY4xYw)zS Wait until the Python thread state of all non-daemon threads get deleted. NT) _main_threadrr'rreversedrrLrrrIrar@r;rrrrY) atexit_calltlocklocksrs r& _shutdownr%s$8$:N 23  Y[())   ||~~    ! $)E  ! ! # $  D LLN LLN   $ $s '$C>>DctS)zReturn the main thread object. In normal conditions, the main thread is the thread from which the Python interpreter was started. )rr$r%r&r r ]s  r%)_local)rctai} tt}|atata t5tt}|jt|D]}||ura|jdt}t|t r)t |_d|_d|_|j)||_|||<h|jd|j-t.j1tj1tj|t3tdk(sJ dddy#t$rt }YCwxYw#1swYyxYw)zL Cleanup threading module state that should not exist after a fork. TrFrXN)rr+rKrrMrrrAr;rrrupdaterr$ isinstancerrNr rr<rr@r,rr) new_activecurrentthreadsrjrLs r& _after_forkrosGJ )+&L*+eO !jl#y! F ,,T2! fl3'2F$#/FL',F$++- % $* 5!,,U3 % (   z"7|q   9!!  -  !!sE DE& E#"E#&E/register_at_fork)after_in_child)erwos_ossysr/_threadrtimerr _weakrefsetr itertoolsrrD _collectionsrr} ImportError collections__all__start_new_threadr-daemon_threads_allowedr allocate_lockrAr:rr'r r(rrerrorrrr9r r+r4rr rrr!rrr>r:r rrrrr`r__next__rrr+rKr,rr;rrrrr^rr_r tracebackr`rlra__excepthook__rrrrr rrrrr rrrrrrr rr_threading_localrr|rr$r%r&rsA#%,, <,,!88&&%%     "77#))M! NN?#mm mmG!!    %#  ${{z qqhTTn*!y*!ZOOz^!^!B  !9  &W   I &'% 1 nnb +<\0jF< (& (*3632   * : >$" } 2p'' 7!t 3"#C 4$y4,++,:   #"# Gx&(=& 13O&(` '&'skG-- G?:H& H'H*I- G<;G<?H  H HHH'&H'* I  I  II