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NN /  CrcHSUlUR(a%URRUR5 URR 5 URR UR5 URRURU5 gru) rrrrrr=rDrrFrvs rr`_UnixWritePipeTransport._close:sf << JJ % %dll 3  !!$,,/ T77=rcURRU5 URR5 SUlSUlSUlg!URR5 SUlSUlSUlf=fr!ryrvs rrF-_UnixWritePipeTransport._call_connection_lostBr|r})rrrrrrrrr~r!)r r r r r+r<rr rrrrrSrWr\r5r:r;rgrrGr`rFrrrs@rr}r}si#/J-0!!%F%8C" %MM  >rr}c\rSrSrSrSrg)riLc SnU[R:Xa;[RR S5(a[ R "5up8[R"U4X#XESUS.UD6UlUb:UR5 [UR5SUS9URl SnUb!UR5 UR5 gg!Ub!UR5 UR5 ff=f)NrF)rrrruniversal_newlinesrwb) buffering) subprocessPIPEr6rrr socketpairPopen_procr5r2detachr) r.r\rrrrrrstdin_ws r_start_UnixSubprocessTransport._startNs JOO # (?(?(F(F $..0NE #))E!v#('E=CEDJ" #'(8$'#R  "  #w"  #s AC&C<)rN)r r r r rrrrrrrLs rrcL\rSrSrSrS SjrSrSrSrSr S r S r S r S r g)rida Abstract base class for monitoring child processes. Objects derived from this class monitor a collection of subprocesses and report their termination or interruption by a signal. New callbacks are registered with .add_child_handler(). 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NotImplementedErrorr.rr[r\s rr&AbstractChildWatcher.add_child_handlers "##rc[5e)zRemoves the handler for process 'pid'. The function returns True if the handler was successfully removed, False if there was nothing to remove.rr.rs rremove_child_handler)AbstractChildWatcher.remove_child_handlers "##rc[5e)zAttach the watcher to an event loop. If the watcher was previously attached to an event loop, then it is first detached before attaching to the new loop. Note: loop may be None. rr.r"s r attach_loop AbstractChildWatcher.attach_loops "##rc[5e)z\Close the watcher. This must be called to make sure that any underlying resource is freed. rr)s rr5AbstractChildWatcher.closes "##rc[5e)zReturn ``True`` if the watcher is active and is used by the event loop. Return True if the watcher is installed and ready to handle process exit notifications. rr)s rrAbstractChildWatcher.is_actives "##rc[5e)z\Enter the watcher's context and allow starting new processes This function must return selfrr)s r __enter__AbstractChildWatcher.__enter__s "##rc[5e)zExit the watcher's contextrr.abcs r__exit__AbstractChildWatcher.__exit__s !##rr)returnN)r r r r r rrrrr5rrrrrrrrrds/,. $$$$$$ $rrcH\rSrSrSrSrSrSrSrSr Sr S r S r S r g ) riaChild watcher implementation using Linux's pid file descriptors. This child watcher polls process file descriptors (pidfds) to await child process termination. In some respects, PidfdChildWatcher is a "Goldilocks" child watcher implementation. It doesn't require signals or threads, doesn't interfere with any processes launched outside the event loop, and scales linearly with the number of subprocesses launched by the event loop. The main disadvantage is that pidfds are specific to Linux, and only work on recent (5.3+) kernels. cU$r!rr)s rrPidfdChildWatcher.__enter__ rcgr!r)r.exc_type exc_value exc_tracebacks rrPidfdChildWatcher.__exit__ rcgrurr)s rrPidfdChildWatcher.is_activerrcgr!rr)s rr5PidfdChildWatcher.closerrcgr!rrs rrPidfdChildWatcher.attach_looprrc[R"5n[R"U5nUR XPR XX#5 gr!)rget_running_loopr" pidfd_openr_do_wait)r.rr[r\r"pidfds rr#PidfdChildWatcher.add_child_handlers4&&( c"  s8Jrc*[R"5nURU5 [R"US5upg[ U5n[R"U5 U"X/UQ76 g![ a Sn[R"SU5 NEf=f)NrzJchild process pid %d exit status already read: will report returncode 255) rrrDr"waitpidr#ChildProcessErrorrrr5) r.rr r[r\r"_r%rs rrPidfdChildWatcher._do_waits&&( E" 8 3*IA07J (4(! J NN.   sA,,#BBcgrurrs rr&PidfdChildWatcher.remove_child_handlerrrN)r r r r r rrrr5rrrrrrrrrrs0    K )&rrc>\rSrSrSrSrSrSrSrSr Sr S r g ) BaseChildWatcheric SUl0Ulgr!)r _callbacksr)s rr+BaseChildWatcher.__init__s rc&URS5 gr!)rr)s rr5BaseChildWatcher.closes rc`URSL=(a URR5$r!)r is_runningr)s rrBaseChildWatcher.is_actives#zz%A$***?*?*AArc[5er!r)r. expected_pids r _do_waitpidBaseChildWatcher._do_waitpid !##rc[5er!rr)s r_do_waitpid_all BaseChildWatcher._do_waitpid_allr"rcUb![U[R5(deURb/Uc,UR(a[ R "S[5 URb)URR[R5 XlUb;UR[RUR5 UR5 gg)NzCA loop is being detached from a child watcher with pending handlers)rorAbstractEventLooprrr:r;RuntimeWarningr9rOSIGCHLDr` _sig_chldr$rs rrBaseChildWatcher.attach_loops|z$0H0HIIII :: !dlt MM= :: ! JJ , ,V^^ <    # #FNNDNN C  " rcUR5 g![[4a e[a(nURR SUS.5 SnAgSnAff=f)N$Unknown exception in SIGCHLD handler)rnro)r$rrrrrqrvs rr*BaseChildWatcher._sig_chldsX   "-.    JJ - -A /    sAAA)rrN) r r r r r+r5rr r$rr*rrrrrrs&B$$#( rrc\^\rSrSrSrU4SjrU4SjrSrSrSr Sr S r S r S r U=r$) ri)aL'Safe' child watcher implementation. This implementation avoids disrupting other code spawning processes by polling explicitly each process in the SIGCHLD handler instead of calling os.waitpid(-1). This is a safe solution but it has a significant overhead when handling a big number of children (O(n) each time SIGCHLD is raised) cN>[TU]5 [R"SSSS9 g)Nrrrr)r*r+r:rr.r0s rr+SafeChildWatcher.__init__4s' /;%, .rcV>URR5 [TU] 5 gr!)rr=r*r5r1s rr5SafeChildWatcher.close;s   rcU$r!rr)s rrSafeChildWatcher.__enter__?rrcgr!rrs rrSafeChildWatcher.__exit__BrrcFX#4URU'URU5 gr!)rr rs rr"SafeChildWatcher.add_child_handlerEs# (/ rc@URU g![a gf=fNTFrrhrs rr%SafeChildWatcher.remove_child_handlerK( $    c^[UR5HnURU5 M gr!r8rr rs rr$ SafeChildWatcher._do_waitpid_allRs#(C   S !)rc&US:de[R"U[R5up#US:Xag[U5nURR 5(a[ R"SX5 URRU5upVU"X$/UQ76 g![a UnSn[ R"SU5 NOf=f![a: URR 5(a[ R"SUSS9 ggf=f)Nr$process %s exited with returncode %sr 8Unknown child process pid %d, will report returncode 255'Child watcher got an unexpected pid: %rTrl) r"r WNOHANGr#rrCrrJrrrpoprh)r.rrr%rr[r\s rr SafeChildWatcher._do_waitpidWsa 7**\2::>KCax/7Jzz##%% C)7 -!__005NH S ,t ,7! CJ NNJ   ( 3zz##%%H"T3& 3s#'B!:C !%C C  ?DDr)r r r r r r+r5rrrrr$r rrrs@rrr)s5.  " - -rrcV^\rSrSrSrU4SjrU4SjrSrSrSr Sr S r S r U=r $) riza?'Fast' child watcher implementation. This implementation reaps every terminated processes by calling os.waitpid(-1) directly, possibly breaking other code spawning processes and waiting for their termination. There is no noticeable overhead when handling a big number of children (O(1) each time a child terminates). c>[TU]5 [R"5Ul0UlSUl[R"SSSS9 g)Nrrrrr) r*r+ threadingLock_lock_zombies_forksr:rr1s rr+FastChildWatcher.__init__sC ^^%   /;%, .rc>URR5 URR5 [TU]5 gr!)rr=rPr*r5r1s rr5FastChildWatcher.closes,    rc~UR U=RS- slUsSSS5 $!,(df  g=f)Nr)rOrQr)s rrFastChildWatcher.__enter__s$ ZZ KK1 KZZs. <c^UR U=RS-slUR(dUR(d SSS5 g[UR5nURR 5 SSS5 [ R "SW5 g!,(df  N&=f)Nrz5Caught subprocesses termination from unknown pids: %s)rOrQrPrUr=rr)r.rrrcollateral_victimss rrFastChildWatcher.__exit__sp ZZ KK1 K{{$-- Z "%T]]!3  MM   !  C  Zs9B/B B,cUR(dS5eUR URRU5nSSS5 U"UW/UQ76 g![a X#4UR U'SSS5 gf=f!,(df  NA=f)NzMust use the context manager)rQrOrPrIrhr)r.rr[r\rs rr"FastChildWatcher.add_child_handlers}{{:::{ ZZ !]]..s3  j(4(  '/~$ Z Zs(A>AA;0A>:A;;A>> B c@URU g![a gf=fr<r=rs rr%FastChildWatcher.remove_child_handlerr?r@c[R"S[R5upUS:Xag[U5nUR  UR RU5upEURR5(a[R"SX5 SSS5 Wc[R"SX5 O U"X/WQ76 M![a gf=f![af UR(aPX0RU'URR5(a[R"SX5 SSS5 GMESnNf=f!,(df  N=f)NrFrrEz,unknown process %s exited with returncode %sz8Caught subprocess termination from unknown pid: %d -> %d)r"r rHr#rrOrrIrrCrrJrhrQrPr)r.rr%rr[r\s rr$ FastChildWatcher._do_waitpid_alls0 < jjRZZ8  !83F; 6%)__%8%8%=NHzz++-- %K%(6!& #1040K%   ${{-7 c*:://11"LL*>),:! $H $sN'C E C'6E CCAE :EE E E  E E)rQrOrP)r r r r r r+r5rrrrr$rrrs@rrrzs0.    )(1(1rrcZ\rSrSrSrSrSrSrSrSr Sr S r S r S r S rS rSrg)riabA watcher that doesn't require running loop in the main thread. This implementation registers a SIGCHLD signal handler on instantiation (which may conflict with other code that install own handler for this signal). The solution is safe but it has a significant overhead when handling a big number of processes (*O(n)* each time a SIGCHLD is received). cL0UlSUl[R"SSSS9 g)Nrrrr)r_saved_sighandlerr:rr)s rr+MultiLoopChildWatcher.__init__s*!%4;%, .rcURSL$r!)rbr)s rrMultiLoopChildWatcher.is_actives%%T11rcTURR5 URcg[R"[R 5nXR :wa[R"S5 O/[R"[R UR5 SUlg)Nz+SIGCHLD handler was changed by outside code) rr=rbrO getsignalr)r*rr)r.rls rr5MultiLoopChildWatcher.closesl   ! ! ) ""6>>2 nn $ NNH I MM&..$*@*@ A!%rcU$r!rr)s rrMultiLoopChildWatcher.__enter__rrcgr!rr.rexc_valexc_tbs rrMultiLoopChildWatcher.__exit__rrcr[R"5nXBU4URU'URU5 gr!)rrrr )r.rr[r\r"s rr'MultiLoopChildWatcher.add_child_handlers3&&( $5 rc@URU g![a gf=fr<r=rs rr*MultiLoopChildWatcher.remove_child_handlerr?r@cBURbg[R"[RUR5UlURc+[R "S5 [R Ul[R"[RS5 g)NzaPrevious SIGCHLD handler was set by non-Python code, restore to default handler on watcher close.F)rbrOr)r*rrrkrWrs rr!MultiLoopChildWatcher.attach_loop%so  ! ! - !'v~~t~~!N  ! ! ) NNJ K%+^^D " FNNE2rc^[UR5HnURU5 M gr!rBrs rr$%MultiLoopChildWatcher._do_waitpid_all6s#(C   S !)rcXUS:de[R"U[R5up#US:Xag[U5nSnURRU5upgnUR5(a[ R "SXb5 gU(a,UR5(a[ R"SX5 UR"XrU/UQ76 g![a UnSn[ R "SU5 SnNf=f![a [ R "SUSS 9 gf=f) NrTr rFF%Loop %r that handles pid %r is closedrErGrl)r"r rHr#rrrrrI is_closedrCrJrrh) r.rrr%r debug_logr"r[r\s rr !MultiLoopChildWatcher._do_waitpid:sa **\2::>KCax/7JI L#'??#6#6s#; DD~~FR!1!1LL!G!-;))(KdK=! CJ NNJ I $ / NND / /s#'CD'DD D)(D)cUR5 g![[4a e[a [R "SSS9 gf=f)Nr-Trl)r$rrrrr)r.rrs rr*MultiLoopChildWatcher._sig_chld_sE R  "-.   R NNAD Q Rs/AA)rrbN)r r r r r r+rr5rrrrrr$r r*rrrrrrsA $.2 & 3""#LJRrrcn\rSrSrSrSrSrSrSrSr \ R4Sjr S r S rS rS rS rg)riha%Threaded child watcher implementation. The watcher uses a thread per process for waiting for the process finish. It doesn't require subscription on POSIX signal but a thread creation is not free. The watcher has O(1) complexity, its performance doesn't depend on amount of spawn processes. cH[R"S5Ul0Ulgr) itertoolsr _pid_counter_threadsr)s rr+ThreadedChildWatcher.__init__us%OOA. rcgrurr)s rrThreadedChildWatcher.is_activeyrrcgr!rr)s rr5ThreadedChildWatcher.close|rrcU$r!rr)s rrThreadedChildWatcher.__enter__rrcgr!rrls rrThreadedChildWatcher.__exit__rrc[URR55Vs/sHnUR5(dMUPM nnU(aU"URS3[ US9 ggs snf)Nz0 has registered but not finished child processesr3)r8rvaluesis_aliver0r<)r.rfthreadthreadss rrgThreadedChildWatcher.__del__se(,T]]-A-A-C(D)(Dfoo'(D)  T^^$$TU!  )s A-A-c[R"5n[R"URS[ UR 53XAX#4SS9nXPRU'UR5 g)Nzasyncio-waitpid-T)targetnamer\daemon) rrrMThreadr nextrrstart)r.rr[r\r"rs rr&ThreadedChildWatcher.add_child_handlers`&&(!!)9)9)9$t?P?P:Q9R'S(,8'B)-/$ c rcgrurrs rr)ThreadedChildWatcher.remove_child_handlerrrcgr!rrs rr ThreadedChildWatcher.attach_looprrcUS:de[R"US5upV[U5nUR5(a[R "SX'5 UR5(a[R"SX5 OUR"X5U/UQ76 URRU5 g![ a UnSn[R"SU5 Nf=f)NrrEr rFry) r"r r#rCrrJrrrzrrrI)r.r"rr[r\rr%rs rr  ThreadedChildWatcher._do_waitpidsa 7**\15KC07J~~ C)7 >>   NNBD N  % %hZ G$ G ,''! CJ NNJ   sB77%CC)rrN)r r r r r r+rr5rrr:r;rgrrrr rrrrrrhsB   %MM  (rrc[[S5(dg[R"5n[R"[R"US55 g![ a gf=f)NrFrT)hasattrr"getpidr5rrS)rs r can_use_pidfdrsR 2| $ $iik sA&'  sAA A&%A&cN^\rSrSrSr\rU4SjrSrU4Sjr Sr Sr Sr U=r $) _UnixDefaultEventLoopPolicyiz:UNIX event loop policy with a watcher for child processes.c0>[TU]5 SUlgr!)r*r+_watcherr1s rr+$_UnixDefaultEventLoopPolicy.__init__s  rc[R URc.[5(a[ 5UlO[ 5UlSSS5 g!,(df  g=fr!)rrOrrrrr)s r _init_watcher)_UnixDefaultEventLoopPolicy._init_watchers8 \\}}$ ??$5$7DM$8$:DM \\s [TU]U5 URbH[R"5[R "5LaURR U5 ggg)zSet the event loop. As a side effect, if a child watcher was set before, then calling .set_event_loop() from the main thread will call .attach_loop(loop) on the child watcher. N)r*set_event_looprrMcurrent_thread main_threadr)r.r"r0s rr*_UnixDefaultEventLoopPolicy.set_event_loopsS t$ MM %((*i.C.C.EE MM % %d +F &rcURcUR5 [R"SSSS9 UR$)znGet the watcher for child processes. If not yet set, a ThreadedChildWatcher object is automatically created. rrrr)rrr:rr)s rr-_UnixDefaultEventLoopPolicy.get_child_watchers@ ==    0:BI K}}rcUb[U[5(deURbURR5 Xl[R "SSSS9 g)z$Set the watcher for child processes.Nset_child_watcherrrr)rorrr5r:r)r.rs rr-_UnixDefaultEventLoopPolicy.set_child_watchersU*W6J"K"KKK == $ MM   ! 0:BI Kr)r)r r r r r r' _loop_factoryr+rrrrrrrs@rrrs+D*M; ,  K Krr)5r rYrrr"r8rOrrrr6rMr:rrrrrr r r r r logr__all__r ImportErrorrr#BaseSelectorEventLoopr' ReadTransportrt_FlowControlMixinWriteTransportr}BaseSubprocessTransportrrrrrrrrrBaseDefaultEventLoopPolicyrrrrrrrrsj8     <<7 C DD r2_BBr2j MZ55M`Jj::(77JZ FF 0S$S$l7,7t2+2jN-'N-bj1'j1Z~R0~RBO(/O(b 6K&"C"C6Kr+4  r