a  ze*@sdZddlZddlZddlZddlZddlZddlZddlZddlZddl Z ddl Z ddl Z ddl Z ddl mZddl mZddl mZddl mZddl mZdd l mZdd l mZdd l mZdd l mZdd l mZddlmZdZe jdkredddZGdddejZGdddej Z!Gdddej"ej#Z$Gdddej%Z&GdddZ'Gddde'Z(d d!Z)Gd"d#d#e'Z*Gd$d%d%e*Z+Gd&d'd'e*Z,Gd(d)d)e'Z-Gd*d+d+e'Z.Gd,d-d-ej/Z0eZ1e0Z2dS).z2Selector event loop for Unix with signal handling.N) base_events)base_subprocess) constants) coroutines)events) exceptions)futures)selector_events)tasks) transports)logger)SelectorEventLoopAbstractChildWatcherSafeChildWatcherFastChildWatcherPidfdChildWatcherMultiLoopChildWatcherThreadedChildWatcherDefaultEventLoopPolicywin32z+Signals are not really supported on WindowscCsdS)zDummy signal handler.N)signumframerrG/opt/bitninja-python-dojo/embedded/lib/python3.9/asyncio/unix_events.py_sighandler_noop*srcseZdZdZd)fdd ZfddZddZd d Zd d Zd dZ ddZ d*ddZ d+ddZ d,ddZ ddZd-dddddddZd.dddddddd Zd!d"Zd#d$Zd%d&Zd'd(ZZS)/_UnixSelectorEventLoopzdUnix event loop. Adds signal handling and UNIX Domain Socket support to SelectorEventLoop. Ncst|i|_dSN)super__init___signal_handlers)selfselector __class__rrr5s z_UnixSelectorEventLoop.__init__csZtts.t|jD]}||qn(|jrVtjd|dt |d|j dS)NzClosing the loop z@ on interpreter shutdown stage, skipping signal handlers removalsource) rclosesys is_finalizinglistr remove_signal_handlerwarningswarnResourceWarningclearr!sigr#rrr'9s z_UnixSelectorEventLoop.closecCs|D]}|sq||qdSr)_handle_signal)r!datarrrr_process_self_dataGsz)_UnixSelectorEventLoop._process_self_datac GsRt|st|rtd|||zt|j Wn4t t fyv}zt t |WYd}~n d}~00t|||d}||j|<zt|tt|dWnt yL}z|j|=|jsztdWn6t t fy}ztd|WYd}~n d}~00|jtjkr6t d|dnWYd}~n d}~00dS)zAdd a handler for a signal. UNIX only. Raise ValueError if the signal number is invalid or uncatchable. Raise RuntimeError if there is a problem setting up the handler. z3coroutines cannot be used with add_signal_handler()NFset_wakeup_fd(-1) failed: %ssig  cannot be caught)rZ iscoroutineZiscoroutinefunction TypeError _check_signal _check_closedsignal set_wakeup_fdZ_csockfileno ValueErrorOSError RuntimeErrorstrrHandler r siginterruptr infoerrnoEINVAL)r!r1callbackargsexchandleZnexcrrradd_signal_handlerNs2  "  "z)_UnixSelectorEventLoop.add_signal_handlercCs8|j|}|durdS|jr*||n ||dS)z2Internal helper that is the actual signal handler.N)r getZ _cancelledr+Z_add_callback_signalsafe)r!r1rKrrrr2{s   z%_UnixSelectorEventLoop._handle_signalc Cs||z |j|=Wnty*YdS0|tjkr>tj}ntj}zt||WnDty}z,|jtj krt d|dnWYd}~n d}~00|jszt dWn4t tfy}zt d|WYd}~n d}~00dS)zwRemove a handler for a signal. UNIX only. Return True if a signal handler was removed, False if not. Fr7r8Nr5r6T)r:r KeyErrorr<SIGINTdefault_int_handlerSIG_DFLr@rFrGrAr=r?r rE)r!r1handlerrJrrrr+s(     "z,_UnixSelectorEventLoop.remove_signal_handlercCs6t|tstd||tvr2td|dS)zInternal helper to validate a signal. Raise ValueError if the signal number is invalid or uncatchable. Raise RuntimeError if there is a problem setting up the handler. zsig must be an int, not zinvalid signal number N) isinstanceintr9r< valid_signalsr?r0rrrr:s  z$_UnixSelectorEventLoop._check_signalcCst|||||Sr)_UnixReadPipeTransportr!pipeprotocolwaiterextrarrr_make_read_pipe_transportsz0_UnixSelectorEventLoop._make_read_pipe_transportcCst|||||Sr)_UnixWritePipeTransportrWrrr_make_write_pipe_transportsz1_UnixSelectorEventLoop._make_write_pipe_transportc st} | std|} t||||||||f| |d| } | | |j| z| IdHWn@t t fyYn*t y| | IdHYn0Wdn1s0Y| S)NzRasyncio.get_child_watcher() is not activated, subprocess support is not installed.)rZr[)rget_child_watcher is_activerA create_future_UnixSubprocessTransportadd_child_handlerZget_pid_child_watcher_callback SystemExitKeyboardInterrupt BaseExceptionr'_wait) r!rYrIshellstdinstdoutstderrbufsizer[kwargswatcherrZtransprrr_make_subprocess_transports.    &z1_UnixSelectorEventLoop._make_subprocess_transportcCs||j|dSr)call_soon_threadsafeZ_process_exited)r!pid returncoderprrrrdsz._UnixSelectorEventLoop._child_watcher_callback)sslsockserver_hostnamessl_handshake_timeoutc s |dust|tsJ|r,|durLtdn |durioUnsupportedOperationfstatst_sizer@ra_sock_sendfile_native_impl) r!rvfileoffsetcountr>rfsize blocksizefutrrr_sock_sendfile_nativeJs,        z,_UnixSelectorEventLoop._sock_sendfile_nativec Cs,|} |dur|||r4||||dS|rd||}|dkrd||||||dSzt| |||} WnDttfy|dur| ||| | |j || |||||| Yndt yj} z|dur| j t jkrt| turtdt j} | | _| } |dkr>td} |||||| n|||||| WYd} ~ nd} ~ 0ttfyYnty} z$|||||| WYd} ~ nrd} ~ 00| dkr||||||nD|| 7}|| 7}|dur | ||| | |j || |||||| dS)Nrzsocket is not connectedzos.sendfile call failed)r> remove_writer cancelled_sock_sendfile_update_filepos set_resultr|rBlockingIOErrorInterruptedError_sock_add_cancellation_callbackZ add_writerrr@rFZENOTCONNrConnectionError __cause__rr set_exceptionrerfrg)r!rZ registered_fdrvr>rrr total_sentfdsentrJnew_excrrrrrasp                z1_UnixSelectorEventLoop._sock_sendfile_native_implcCs|dkrt||tjdSNr)r|lseekSEEK_SET)r!r>rrrrrrsz4_UnixSelectorEventLoop._sock_sendfile_update_fileposcsfdd}||dS)Ncs&|r"}|dkr"|dS)Nr5)rr>r)rrr!rvrrcbszB_UnixSelectorEventLoop._sock_add_cancellation_callback..cb)add_done_callback)r!rrvrrrrrsz6_UnixSelectorEventLoop._sock_add_cancellation_callback)N)NN)NN)N)N)N)__name__ __module__ __qualname____doc__rr'r4rLr2r+r:r\r^rqrdrrrrrr __classcell__rrr#rr/sB -       . CFrcseZdZdZdfdd ZddZddZd d Zd d Zd dZ ddZ ddZ ddZ e jfddZdddZddZddZZS) rViNcst|||jd<||_||_||_||_d|_d|_ t |jj }t |st |st |sd|_d|_d|_tdt |jd|j|jj||j|jj|j|j|dur|jtj|ddS)NrXFz)Pipe transport is for pipes/sockets only.)rr_extra_loop_piper>_fileno _protocol_closing_pausedr|rrrS_ISFIFOrS_ISCHRr? set_blocking call_soonconnection_made _add_reader _read_readyr _set_result_unless_cancelled)r!looprXrYrZr[moder#rrrs6      z_UnixReadPipeTransport.__init__cCs|jjg}|jdur |dn|jr0|d|d|jt|jdd}|jdur|durt ||jt j }|r|dq|dn |jdur|dn |dd d |S) Nclosedclosingfd= _selectorpollingidleopen<{}> )r$rrappendrrgetattrrr _test_selector_event selectors EVENT_READformatjoin)r!rEr"rrrr__repr__s$          z_UnixReadPipeTransport.__repr__c Cszt|j|j}WnDttfy*YntyX}z||dWYd}~nfd}~00|rl|j |nJ|j rt d|d|_|j |j|j |jj|j |jddS)Nz"Fatal read error on pipe transport%r was closed by peerT)r|readrmax_sizerrr@ _fatal_errorrZ data_receivedr get_debugr rEr_remove_readerrZ eof_received_call_connection_lost)r!r3rJrrrrs"  z"_UnixReadPipeTransport._read_readycCs>|js |jrdSd|_|j|j|jr:td|dS)NTz%r pauses reading)rrrrrrr debugr!rrr pause_readings   z$_UnixReadPipeTransport.pause_readingcCsB|js |jsdSd|_|j|j|j|jr>td|dS)NFz%r resumes reading) rrrrrrrr rrrrrresume_readings   z%_UnixReadPipeTransport.resume_readingcCs ||_dSrrr!rYrrr set_protocol sz#_UnixReadPipeTransport.set_protocolcCs|jSrrrrrr get_protocolsz#_UnixReadPipeTransport.get_protocolcCs|jSrrrrrr is_closingsz!_UnixReadPipeTransport.is_closingcCs|js|ddSr)r_closerrrrr'sz_UnixReadPipeTransport.closecCs,|jdur(|d|t|d|jdSNzunclosed transport r%rr.r'r!_warnrrr__del__s z_UnixReadPipeTransport.__del__Fatal error on pipe transportcCsZt|tr4|jtjkr4|jrLtjd||ddn|j||||j d| |dSNz%r: %sTexc_info)message exceptionrrY) rSr@rFZEIOrrr rcall_exception_handlerrrr!rJrrrrrs z#_UnixReadPipeTransport._fatal_errorcCs(d|_|j|j|j|j|dSNT)rrrrrrr!rJrrrr-sz_UnixReadPipeTransport._closecCsPz,|j|W|jd|_d|_d|_n|jd|_d|_d|_0dSrrZconnection_lostrr'rrrrrr2s  z,_UnixReadPipeTransport._call_connection_lost)NN)r)rrrrrrrrrrrrr'r,r-rrrrrrrr#rrVs rVcseZdZd%fdd ZddZddZdd Zd d Zd d ZddZ ddZ ddZ ddZ ddZ ddZejfddZddZd&dd Zd'd!d"Zd#d$ZZS)(r]Nc st||||jd<||_||_||_t|_d|_ d|_ t |jj }t|}t|}t|} |s|s| sd|_d|_d|_tdt |jd|j|jj|| s|rtjds|j|jj|j|j|dur|jtj|ddS)NrXrFz?Pipe transport is only for pipes, sockets and character devicesZaix)rrrrr>rr bytearray_buffer _conn_lostrr|rrrrrrr?rrrrr(platform startswithrrr r) r!rrXrYrZr[rZis_charis_fifo is_socketr#rrr?s6        z _UnixWritePipeTransport.__init__cCs|jjg}|jdur |dn|jr0|d|d|jt|jdd}|jdur|durt ||jt j }|r|dn |d| }|d|n |jdur|dn |dd d |S) Nrrrrrrzbufsize=rrr)r$rrrrrrrr rr EVENT_WRITEget_write_buffer_sizerr)r!rEr"rrmrrrrds(          z _UnixWritePipeTransport.__repr__cCs t|jSr)lenrrrrrr |sz-_UnixWritePipeTransport.get_write_buffer_sizecCs6|jrtd||jr*|tn|dS)Nr)rrr rErrBrokenPipeErrorrrrrrs   z#_UnixWritePipeTransport._read_readyc CsLt|tttfsJt|t|tr.t|}|s6dS|jsB|jrj|jtjkrXt d|jd7_dS|j s2zt |j|}Wnnttfyd}YnVttfyYn@ty}z(|jd7_||dWYd}~dSd}~00|t|krdS|dkr t||d}|j|j|j|j |7_ |dS)Nz=pipe closed by peer or os.write(pipe, data) raised exception.rr#Fatal write error on pipe transport)rSbytesr memoryviewreprrrrZ!LOG_THRESHOLD_FOR_CONNLOST_WRITESr warningrr|writerrrrerfrgrr rZ _add_writer _write_readyZ_maybe_pause_protocol)r!r3nrJrrrrs8      z_UnixWritePipeTransport.writec Cs|jsJdzt|j|j}Wnttfy8YnttfyNYnty}z>|j |j d7_ |j |j| |dWYd}~npd}~00|t|jkr|j |j |j||jr|j |j|ddS|dkr |jd|=dS)NzData should not be emptyrrr)rr|rrrrrerfrgr/rr_remove_writerrr Z_maybe_resume_protocolrrr)r!rrJrrrrs, "   z$_UnixWritePipeTransport._write_readycCsdSrrrrrr can_write_eofsz%_UnixWritePipeTransport.can_write_eofcCsB|jr dS|jsJd|_|js>|j|j|j|jddSr)rrrrrrrrrrrr write_eofs z!_UnixWritePipeTransport.write_eofcCs ||_dSrrrrrrrsz$_UnixWritePipeTransport.set_protocolcCs|jSrrrrrrrsz$_UnixWritePipeTransport.get_protocolcCs|jSrrrrrrrsz"_UnixWritePipeTransport.is_closingcCs|jdur|js|dSr)rrrrrrrr'sz_UnixWritePipeTransport.closecCs,|jdur(|d|t|d|jdSrrrrrrrs z_UnixWritePipeTransport.__del__cCs|ddSr)rrrrrabortsz_UnixWritePipeTransport.abortrcCsNt|tr(|jr@tjd||ddn|j||||jd||dSr) rSr@rrr rrrrrrrrrs  z$_UnixWritePipeTransport._fatal_errorcCsFd|_|jr|j|j|j|j|j|j|j|dSr) rrrrrr/rrrrrrrrs  z_UnixWritePipeTransport._closecCsPz,|j|W|jd|_d|_d|_n|jd|_d|_d|_0dSrrrrrrrs  z-_UnixWritePipeTransport._call_connection_lost)NN)r)N)rrrrrr rrrrrrrrr'r,r-rrrrrrrrr#rr]<s"% #   r]c@seZdZddZdS)rbc Ksd}|tjkrt\}}zhtj|f||||d|d||_|durh|t|d|d|j_ d}W|dur||n|dur||0dS)NF)rirjrkrluniversal_newlinesrmwb) buffering) subprocessPIPEr~ socketpairPopen_procr'rdetachrj) r!rIrirjrkrlrmrnZstdin_wrrr_start s,   z_UnixSubprocessTransport._startN)rrrr$rrrrrb srbc@sHeZdZdZddZddZddZdd Zd d Zd d Z ddZ dS)raHAbstract 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(). Starting a new process must be done within a 'with' block to allow the watcher to suspend its activity until the new process if fully registered (this is needed to prevent a race condition in some implementations). Example: with watcher: proc = subprocess.Popen("sleep 1") watcher.add_child_handler(proc.pid, callback) Notes: Implementations of this class must be thread-safe. Since child watcher objects may catch the SIGCHLD signal and call waitpid(-1), there should be only one active object per process. cGs tdS)aRegister a new child handler. Arrange for callback(pid, returncode, *args) to be called when process 'pid' terminates. Specifying another callback for the same process replaces the previous handler. Note: callback() must be thread-safe. NNotImplementedErrorr!rsrHrIrrrrc9s z&AbstractChildWatcher.add_child_handlercCs tdS)zRemoves the handler for process 'pid'. The function returns True if the handler was successfully removed, False if there was nothing to remove.Nr%r!rsrrrremove_child_handlerDsz)AbstractChildWatcher.remove_child_handlercCs tdS)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. Nr%r!rrrr attach_loopLsz AbstractChildWatcher.attach_loopcCs tdS)zlClose the watcher. This must be called to make sure that any underlying resource is freed. Nr%rrrrr'VszAbstractChildWatcher.closecCs tdS)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. Nr%rrrrr`]szAbstractChildWatcher.is_activecCs tdS)zdEnter the watcher's context and allow starting new processes This function must return selfNr%rrrr __enter__fszAbstractChildWatcher.__enter__cCs tdS)zExit the watcher's contextNr%r!abcrrr__exit__lszAbstractChildWatcher.__exit__N) rrrrrcr)r+r'r`r,r1rrrrr"s   rc@sXeZdZdZddZddZddZdd Zd d Zd d Z ddZ ddZ ddZ dS)ra6Child 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. cCsd|_i|_dSrr _callbacksrrrrr}szPidfdChildWatcher.__init__cCs|Srrrrrrr,szPidfdChildWatcher.__enter__cCsdSrr)r!exc_type exc_value exc_tracebackrrrr1szPidfdChildWatcher.__exit__cCs|jduo|jSrrZ is_runningrrrrr`szPidfdChildWatcher.is_activecCs|ddSrr+rrrrr'szPidfdChildWatcher.closecCsd|jdur$|dur$|jr$tdt|jD] \}}}|j|t|q.|j ||_dSNzCA loop is being detached from a child watcher with pending handlers) rr3r,r-RuntimeWarningvaluesrr|r'r/)r!rpidfd_rrrr+s   zPidfdChildWatcher.attach_loopcGsZ|j|}|dur*|d||f|j|<n,t|}|j||j||||f|j|<dSr)r3rMr|Z pidfd_openrr_do_wait)r!rsrHrIZexistingr<rrrrcs   z#PidfdChildWatcher.add_child_handlercCs~|j|\}}}|j|zt|d\}}Wn"tyTd}td|Yn 0t |}t ||||g|RdS)NrzJchild process pid %d exit status already read: will report returncode 255) r3poprrr|waitpidChildProcessErrorr r_compute_returncoder')r!rsr<rHrIr=statusrtrrrr>s    zPidfdChildWatcher._do_waitcCsFz|j|\}}}Wnty*YdS0|j|t|dS)NFT)r3r@rNrrr|r')r!rsr<r=rrrr)s   z&PidfdChildWatcher.remove_child_handlerN) rrrrrr,r1r`r'r+rcr>r)rrrrrqs   rcCs2t|rt| St|r*t|S|SdSr)r| WIFSIGNALEDWTERMSIG WIFEXITED WEXITSTATUS)rDrrrrCs     rCc@sDeZdZddZddZddZddZd d Zd d Zd dZ dS)BaseChildWatchercCsd|_i|_dSrr2rrrrrszBaseChildWatcher.__init__cCs|ddSrr8rrrrr'szBaseChildWatcher.closecCs|jduo|jSrr7rrrrr`szBaseChildWatcher.is_activecCs tdSrr%)r! expected_pidrrr _do_waitpidszBaseChildWatcher._do_waitpidcCs tdSrr%rrrr_do_waitpid_allsz BaseChildWatcher._do_waitpid_allcCs~|dust|tjsJ|jdur<|dur<|jr %d)r|rArVrBrCrYr3r@rNr[rZrrr rr)r!rsrDrtrHrIrrrrLs:      "z FastChildWatcher._do_waitpid_all) rrrrrr'r,r1rcr)rLrrrr#rrLs  rc@sheZdZdZddZddZddZdd Zd d Zd d Z ddZ ddZ ddZ ddZ ddZdS)ra~A 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). cCsi|_d|_dSr)r3_saved_sighandlerrrrrrszMultiLoopChildWatcher.__init__cCs |jduSr)r\rrrrr`szMultiLoopChildWatcher.is_activecCsT|j|jdurdSttj}||jkr:tdnttj|jd|_dS)Nz+SIGCHLD handler was changed by outside code) r3r/r\r< getsignalrMrNr r)r!rRrrrr's     zMultiLoopChildWatcher.closecCs|Srrrrrrr,szMultiLoopChildWatcher.__enter__cCsdSrrr!r4exc_valexc_tbrrrr1szMultiLoopChildWatcher.__exit__cGs&t}|||f|j|<||dSr)rget_running_loopr3rK)r!rsrHrIrrrrrcsz'MultiLoopChildWatcher.add_child_handlercCs(z|j|=WdSty"YdS0dSrPrQr(rrrr)s  z*MultiLoopChildWatcher.remove_child_handlercCsN|jdurdSttj|j|_|jdurKsz6ThreadedChildWatcher._join_threads..N)r*rfr;r)r!threadsrlrrrrgIsz"ThreadedChildWatcher._join_threadscCs|Srrrrrrr,PszThreadedChildWatcher.__enter__cCsdSrrr^rrrr1SszThreadedChildWatcher.__exit__cCs6ddt|jD}|r2||jdt|ddS)NcSsg|]}|r|qSr)rhrjrrrrmWsz0ThreadedChildWatcher.__del__..z0 has registered but not finished child processesr%)r*rfr;r$r.)r!rrnrrrrVs  zThreadedChildWatcher.__del__cGsFt}tj|jdt|j||||fdd}||j|<|dS)Nzwaitpid-T)targetnamerIri) rrarWThreadrKnextrerfstart)r!rsrHrIrrlrrrrc^s  z&ThreadedChildWatcher.add_child_handlercCsdSrrr(rrrr)gsz)ThreadedChildWatcher.remove_child_handlercCsdSrrr*rrrr+msz ThreadedChildWatcher.attach_loopcCs|dks Jzt|d\}}Wn&tyF|}d}td|Yn 0t|}|rftd|||r~td||n|j |||g|R|j |dS)Nrr?rSrTrb) r|rArBr rrCrrrcrrrfr@)r!rrJrHrIrsrDrtrrrrKps&   z ThreadedChildWatcher._do_waitpidN)rrrrrr`r'rgr,r1r,r-rrcr)r+rKrrrrr2s  rcsHeZdZdZeZfddZddZfddZdd Z d d Z Z S) _UnixDefaultEventLoopPolicyz:UNIX event loop policy with a watcher for child processes.cstd|_dSr)rr_watcherrr#rrrs z$_UnixDefaultEventLoopPolicy.__init__cCs\tjB|jdur:t|_ttur:|j|jj Wdn1sN0YdSr) rrYrurrWcurrent_thread main_threadr+_localrrrrr _init_watchers  z)_UnixDefaultEventLoopPolicy._init_watchercs6t||jdur2ttur2|j|dS)zSet the event loop. As a side effect, if a child watcher was set before, then calling .set_event_loop() from the main thread will call .attach_loop(loop) on the child watcher. N)rset_event_looprurWrvrwr+r*r#rrrzs   z*_UnixDefaultEventLoopPolicy.set_event_loopcCs|jdur||jS)z~Get the watcher for child processes. If not yet set, a ThreadedChildWatcher object is automatically created. N)ruryrrrrr_s z-_UnixDefaultEventLoopPolicy.get_child_watchercCs4|dust|tsJ|jdur*|j||_dS)z$Set the watcher for child processes.N)rSrrur')r!rorrrset_child_watchers  z-_UnixDefaultEventLoopPolicy.set_child_watcher) rrrrrZ _loop_factoryrryrzr_r{rrrr#rrts   rt)3rrFrrdr|rr<r~rrr(rWr,rrrrrrr r r r logr __all__r ImportErrorrZBaseSelectorEventLooprZ ReadTransportrVZ_FlowControlMixinZWriteTransportr]ZBaseSubprocessTransportrbrrrCrIrrrrZBaseDefaultEventLoopPolicyrtrrrrrrsb             NON5Ji}Y2