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Edit: unix_events.cpython-310.pyc
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Raise RuntimeError if there is a problem setting up the handler. zsig must be an int, not zinvalid signal number N)� isinstance�intrA rD � valid_signalsr r6 r r r rB � s �z$_UnixSelectorEventLoop._check_signalc C � t | ||||�S r )�_UnixReadPipeTransport�r& �pipe�protocol�waiter�extrar r r �_make_read_pipe_transport� � z0_UnixSelectorEventLoop._make_read_pipe_transportc C ra r )�_UnixWritePipeTransportrc r r r �_make_write_pipe_transport� ri z1_UnixSelectorEventLoop._make_write_pipe_transportc � s� �t �� �U} | �� std��| �� } t| |||||||f| |d�| ��} | �| �� | j| � z| I d H W n t t fy? � t yQ | � � | � � I d H � w W d � | S 1 s]w Y | S )NzRasyncio.get_child_watcher() is not activated, subprocess support is not installed.)rf rg )r �get_child_watcher� is_activerI � create_future�_UnixSubprocessTransport�add_child_handler�get_pid�_child_watcher_callback� SystemExit�KeyboardInterrupt� BaseExceptionr- �_wait) r& re rQ �shell�stdin�stdout�stderr�bufsizerg �kwargs�watcherrf �transpr r r �_make_subprocess_transport� s: � ��� � �� ��z1_UnixSelectorEventLoop._make_subprocess_transportc C s | � | j|j|� d S r )�call_soon_threadsafe� call_soon�_process_exited)r& �pid� returncoder~ r r r rr � s z._UnixSelectorEventLoop._child_watcher_callback)�ssl�sock�server_hostname�ssl_handshake_timeoutc � s �|d u s t |t�s J �|r|d u rtd��n|d ur td��|d ur'td��|d urZ|d ur3td��t�|�}t�tjtjd�}z|�d� | � ||�I d H W n( |� � � |d u rbtd��|j tjksn|j tjkrutd|����|�d� | j |||||d �I d H \}}||fS ) Nz/you have to pass server_hostname when using sslz+server_hostname is only meaningful with ssl�1ssl_handshake_timeout is only meaningful with ssl�3path and sock can not be specified at the same timer Fz no path and sock were specified�.A UNIX Domain Stream Socket was expected, got )r� )r^ rJ r r �fspath�socket�AF_UNIX� SOCK_STREAM� setblocking� sock_connectr- �family�type� _create_connection_transport) r& �protocol_factory�pathr� r� r� r� � transportre r r r �create_unix_connection� sP ����� � �z-_UnixSelectorEventLoop.create_unix_connection�d T)r� �backlogr� r� � start_servingc � s� �t |t�r td��|d ur|std��|d ur�|d ur td��t�|�}t�tjtj�}|d dvrezt � t� |�j �rBt� |� W n! t yL Y n tyd } z t�d||� W Y d }~nd }~ww z|�|� W nF ty� } z|�� | jtjkr�d|�d�} ttj| �d �� d } ~ w |�� � |d u r�td ��|jtjks�|jtjkr�td |����|�d � t�| |g||||�} |r�| �� t� d�I d H | S ) Nz*ssl argument must be an SSLContext or Noner� r� r )r � z2Unable to check or remove stale UNIX socket %r: %rzAddress z is already in usez-path was not specified, and no sock specifiedr� F) r^ �boolrA r r r� r� r� r� �stat�S_ISSOCK�st_mode�remove�FileNotFoundErrorrH r �error�bindr- rN � EADDRINUSEr� r� r� r �Server�_start_servingr �sleep) r& r� r� r� r� r� r� r� �errrR �msg�serverr r r �create_unix_server sp � �� � ��� �� � �z)_UnixSelectorEventLoop.create_unix_serverc � s� �zt j W n ty t�d��w z|�� }W n ttjfy- } zt�d��d }~ww zt �|�j }W n t yB t�d��w |rG|n|}|sMdS | � � } | � | d |||||d� | I d H S )Nz os.sendfile() is not availableznot a regular filer ) r �sendfile�AttributeErrorr �SendfileNotAvailableErrorrG �io�UnsupportedOperation�fstat�st_sizerH rn �_sock_sendfile_native_impl) r& r� �file�offset�countrG r� �fsize� blocksize�futr r r �_sock_sendfile_nativeU s6 � �� �� � � z,_UnixSelectorEventLoop._sock_sendfile_nativec C s* |� � } |d ur | �|� |�� r| �|||� d S |r2|| }|dkr2| �|||� |�|� d S z t�| |||�} W n� ttfya |d u rO| � ||� | � | | j || ||||||� Y d S t y� } zK|d ur�| j t jkr�t| �tur�tdt j�} | | _| } |dkr�t�d�} | �|||� |�| � n| �|||� |�| � W Y d } ~ d S W Y d } ~ d S d } ~ w ttfy� � ty� } z| �|||� |�| � W Y d } ~ d S d } ~ ww | dkr�| �|||� |�|� d S || 7 }|| 7 }|d u �r| � ||� | � | | j || ||||||� d S )Nr zsocket is not connectedzos.sendfile call failed)rG � remove_writer� cancelled� _sock_sendfile_update_filepos� set_resultr r� �BlockingIOError�InterruptedError� _sock_add_cancellation_callback� add_writerr� rH rN �ENOTCONNr� �ConnectionError� __cause__r r� � set_exceptionrs rt ru )r& r� � registered_fdr� rG r� r� r� � total_sent�fd�sentrR �new_excr� r r r r� l st � �� ���� �z1_UnixSelectorEventLoop._sock_sendfile_native_implc C s |dkrt �||t j� d S d S �Nr )r �lseek�SEEK_SET)r& rG r� r� r r r r� � s �z4_UnixSelectorEventLoop._sock_sendfile_update_fileposc s � �fdd�}|� |� d S )Nc s. | � � r��� }|dkr� �|� d S d S d S )Nr; )r� rG r� )r� r� �r& r� r r �cb� s �zB_UnixSelectorEventLoop._sock_add_cancellation_callback.<locals>.cb)�add_done_callback)r& r� r� r� r r� r r� � s z6_UnixSelectorEventLoop._sock_add_cancellation_callbackr �NN)�__name__� __module__� __qualname__�__doc__r$ r- r: rU r8 r1 rB rh rk r rr r� r� r� r� r� r� � __classcell__r r r( r r" 9 sD - � � � � �.� �CFr" c s� e Zd ZdZd � fdd� Zdd� Zdd� Zd d � Zd d � Zd d� Z dd� Z dd� Z dd� Z e jfdd�Zd dd�Zdd� Zd d � Z� ZS ) rb i Nc s� t � �|� || jd< || _|| _|�� | _|| _d| _d| _ t � | j�j }t �|�sBt �|�sBt �|�sBd | _d | _d | _td��t �| jd� | j�| jj| � | j�| jj| j| j� |d urm| j�tj|d � d S d S )Nrd Fz)Pipe transport is for pipes/sockets only.)r# r$ �_extra�_loop�_piperG �_fileno� _protocol�_closing�_pausedr r� r� r� �S_ISFIFOr� �S_ISCHRr � set_blockingr� �connection_made� _add_reader� _read_readyr � _set_result_unless_cancelled)r& �looprd re rf rg �moder( r r r$ � s8 �� � ��z _UnixReadPipeTransport.__init__c C s� | j jg}| jd u r|�d� n| jr|�d� |�d| j� �� t| jdd �}| jd urH|d urHt� || jt j �}|rB|�d� n|�d� n| jd urS|�d� n|�d� d� d � |��S ) N�closed�closing�fd=� _selector�polling�idle�open�<{}>� )r) r� r� �appendr� r� �getattrr� r �_test_selector_event� selectors� EVENT_READ�format�join)r& rM r' r� r r r �__repr__� s$ � z _UnixReadPipeTransport.__repr__c C s� z t �| j| j�}W n$ ttfy Y d S ty. } z | �|d� W Y d }~d S d }~ww |r9| j� |� d S | j � � rDt � d| � d| _| j �| j� | j �| jj� | j �| jd � d S )Nz"Fatal read error on pipe transport�%r was closed by peerT)r �readr� �max_sizer� r� rH � _fatal_errorr� � data_receivedr� � get_debugr rM r� �_remove_readerr� � eof_received�_call_connection_lost)r& r9 rR r r r r� � s �� z"_UnixReadPipeTransport._read_readyc C sB | j s| jrd S d| _| j�| j� | j�� r t�d| � d S d S )NTz%r pauses reading)r� r� r� r r� r� r �debug�r& r r r � pause_reading s �z$_UnixReadPipeTransport.pause_readingc C sF | j s| jsd S d| _| j�| j| j� | j�� r!t�d| � d S d S )NFz%r resumes reading) r� r� r� r� r� r� r� r r r r r r �resume_reading s �z%_UnixReadPipeTransport.resume_readingc C � || _ d S r �r� �r& re r r r � set_protocol � z#_UnixReadPipeTransport.set_protocolc C � | j S r r r r r r � get_protocol � z#_UnixReadPipeTransport.get_protocolc C r r �r� r r r r � is_closing r z!_UnixReadPipeTransport.is_closingc C s | j s | �d � d S d S r )r� �_closer r r r r- ! s �z _UnixReadPipeTransport.closec C �0 | j d ur|d| ��t| d� | j �� d S d S �Nzunclosed transport r+ �r� r4 r- �r& �_warnr r r �__del__% � �z _UnixReadPipeTransport.__del__� Fatal error on pipe transportc C sZ t |t�r|jtjkr| j�� rtjd| |dd� n | j�||| | j d�� | � |� d S �Nz%r: %sT��exc_info)�message� exceptionr� re ) r^ rH rN �EIOr� r� r r �call_exception_handlerr� r �r& rR r r r r r� * s ��z#_UnixReadPipeTransport._fatal_errorc C s( d| _ | j�| j� | j�| j|� d S �NT)r� r� r r� r� r �r& rR r r r r 8 s z _UnixReadPipeTransport._closec C �N z| j �|� W | j�� d | _d | _ d | _d S | j�� d | _d | _ d | _w r �r� �connection_lostr� r- r� r# r r r r = � �z,_UnixReadPipeTransport._call_connection_lostr� �r )r� r� r� r� r$ r� r� r r r r r r- r2 r3 r r� r r r� r r r( r rb � s rb c s� e Zd Zd%� fdd� Zdd� Zdd� Zdd � Zd d � Zd d � Zdd� Z dd� Z dd� Z dd� Z dd� Z dd� Zejfdd�Zd d � Zd&d d �Zd'd!d"�Zd#d$� Z� ZS )(rj Nc s t � �||� || jd< || _|�� | _|| _t� | _d| _ d| _ t � | j�j }t�|�}t�|�}t�|�} |sJ|sJ| sJd | _d | _d | _td��t �| jd� | j�| jj| � | sd|rptj�d�sp| j�| jj| j| j� |d ur| j�t j |d � d S d S )Nrd r Fz?Pipe transport is only for pipes, sockets and character devices�aix) r# r$ r� r� rG r� r� � bytearray�_buffer� _conn_lostr� r r� r� r� r� r� r� r r� r� r� r� r. �platform� startswithr� r� r r� ) r& r� rd re rf rg r� �is_char�is_fifo� is_socketr( r r r$ J s8 � ��z _UnixWritePipeTransport.__init__c C s� | j jg}| jd u r|�d� n| jr|�d� |�d| j� �� t| jdd �}| jd urT|d urTt� || jt j �}|rB|�d� n|�d� | � � }|�d|� �� n| jd ur_|�d� n|�d� d � d �|��S ) Nr� r� r� r� r� r� zbufsize=r� r� r� )r) r� r� r� r� r� r� r� r r� r� � EVENT_WRITE�get_write_buffer_sizer� r� )r& rM r' r� r{ r r r r� o s( � z _UnixWritePipeTransport.__repr__c C s t | j�S r )�lenr+ r r r r r3 � r z-_UnixWritePipeTransport.get_write_buffer_sizec C s8 | j �� r t�d| � | jr| �t� � d S | �� d S )Nr� )r� r� r rM r+ r �BrokenPipeErrorr r r r r� � s z#_UnixWritePipeTransport._read_readyc C sB t |tttf�sJ t|���t |t�rt|�}|sd S | js!| jr5| jtjkr,t � d� | jd7 _d S | j s�z t � | j|�}W n5 ttfyN d}Y n) ttfyW � tyv } z| jd7 _| �|d� W Y d }~d S d }~ww |t|�krd S |dkr�t|�|d � }| j�| j| j� | j |7 _ | �� d S )Nz=pipe closed by peer or os.write(pipe, data) raised exception.r r �#Fatal write error on pipe transport)r^ �bytesr* � memoryview�reprr, r� r �!LOG_THRESHOLD_FOR_CONNLOST_WRITESr �warningr+ r �writer� r� r� rs rt ru r� r4 r� � _add_writer� _write_ready�_maybe_pause_protocol)r& r9 �nrR r r r r< � s< �� z _UnixWritePipeTransport.writec C s | j sJ d��z t�| j| j �}W n@ ttfy Y d S ttfy& � tyQ } z | j � � | j d7 _ | j � | j� | � |d� W Y d }~d S d }~ww |t| j �krz| j � � | j � | j� | �� | jrx| j �| j� | �d � d S |dkr�| j d |�= d S d S )NzData should not be emptyr r6 r )r+ r r< r� r� r� rs rt ru r5 r, r� �_remove_writerr� r4 �_maybe_resume_protocolr� r r )r& r@ rR r r r r> � s2 �� �z$_UnixWritePipeTransport._write_readyc C r r" r r r r r � can_write_eof� � z%_UnixWritePipeTransport.can_write_eofc C sF | j rd S | js J �d| _ | js!| j�| j� | j�| jd � d S d S r" )r� r� r+ r� r r� r� r r r r r � write_eof� s �z!_UnixWritePipeTransport.write_eofc C r r r r r r r r � r z$_UnixWritePipeTransport.set_protocolc C r r r r r r r r � r z$_UnixWritePipeTransport.get_protocolc C r r r r r r r r � r z"_UnixWritePipeTransport.is_closingc C s$ | j d ur| js| �� d S d S d S r )r� r� rE r r r r r- � s �z _UnixWritePipeTransport.closec C r r r r r r r r � r z _UnixWritePipeTransport.__del__c C � | � d � d S r )r r r r r �abort� � z _UnixWritePipeTransport.abortr c C sN t |t�r| j�� rtjd| |dd� n | j�||| | jd�� | �|� d S r ) r^ rH r� r� r r r r� r r! r r r r� � s ��z$_UnixWritePipeTransport._fatal_errorc C sF d| _ | jr | j�| j� | j�� | j�| j� | j�| j|� d S r" ) r� r+ r� rA r� r5 r r� r r# r r r r s z _UnixWritePipeTransport._closec C r$ r r% r# r r r r r' z-_UnixWritePipeTransport._call_connection_lostr� r( r )r� r� r� r$ r� r3 r� r< r> rC rE r r r r- r2 r3 r rG r� r r r� r r r( r rj G s$ % # rj c @ s e Zd Zdd� ZdS )ro c K s� d }|t jkrtj�d�rt�� \}}z7t j|f||||d|d�|��| _|d ur:|� � t |� � d|d�| j_ d }W |d urI|� � |� � d S d S |d urX|� � |� � w w )Nr) F)rw rx ry rz �universal_newlinesr{ �wb)� buffering) � subprocess�PIPEr. r- r. r� � socketpair�Popen�_procr- r� �detachrx ) r& rQ rw rx ry rz r{ r| �stdin_wr r r �_start s0 ���� � �z _UnixSubprocessTransport._startN)r� r� r� rS r r r r ro s ro c @ sH e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dS )r aH 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(). 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. c G � t � �)a Register 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. ��NotImplementedError�r& r� rP rQ r r r rp C s z&AbstractChildWatcher.add_child_handlerc C rT )z�Removes the handler for process 'pid'. The function returns True if the handler was successfully removed, False if there was nothing to remove.rU �r& r� r r r �remove_child_handlerN s z)AbstractChildWatcher.remove_child_handlerc C rT )z�Attach 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. rU �r& r� r r r � attach_loopV s z AbstractChildWatcher.attach_loopc C rT )zlClose the watcher. This must be called to make sure that any underlying resource is freed. rU r r r r r- ` s zAbstractChildWatcher.closec C rT )z�Return ``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. rU r r r r rm g s z AbstractChildWatcher.is_activec C rT )zdEnter the watcher's context and allow starting new processes This function must return selfrU r r r r � __enter__p s z AbstractChildWatcher.__enter__c C rT )zExit the watcher's contextrU �r& �a�b�cr r r �__exit__v s z AbstractChildWatcher.__exit__N) r� r� r� r� rp rY r[ r- rm r\ ra r r r r r , s r c @ sX e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z dd� Z dS )r a6 Child 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. c C � d | _ i | _d S r �r� � _callbacksr r r r r$ � � zPidfdChildWatcher.__init__c C � | S r r r r r r r\ � rD zPidfdChildWatcher.__enter__c C � d S r r )r& �exc_type� exc_value� exc_tracebackr r r ra � rD zPidfdChildWatcher.__exit__c C � | j d uo | j �� S r �r� � is_runningr r r r rm � � zPidfdChildWatcher.is_activec C rF r �r[ r r r r r- � rH zPidfdChildWatcher.closec C sd | j d ur|d u r| jrt�dt� | j�� D ]\}}}| j �|� t�|� q| j� � || _ d S �NzCA loop is being detached from a child watcher with pending handlers) r� rd r2 r3 �RuntimeWarning�valuesr r r- r5 )r& r� �pidfd�_r r r r[ � s � z PidfdChildWatcher.attach_loopc G s\ | j �|�}|d ur|d ||f| j |< d S t�|�}| j�|| j|� |||f| j |< d S r� )rd rV r � pidfd_openr� r� �_do_wait)r& r� rP rQ �existingrs r r r rp � s z#PidfdChildWatcher.add_child_handlerc C s~ | j �|�\}}}| j�|� z t�|d�\}}W n ty* d}t�d|� Y nw t |�}t� |� |||g|�R � d S )Nr � zJchild process pid %d exit status already read: will report returncode 255) rd �popr� r r �waitpid�ChildProcessErrorr r; r r- )r& r� rs rP rQ rt r! r� r r r rv � s �� zPidfdChildWatcher._do_waitc C sF z | j �|�\}}}W n ty Y dS w | j�|� t�|� dS )NFT)rd ry rY r� r r r- )r& r� rs rt r r r rY � s � z&PidfdChildWatcher.remove_child_handlerN) r� r� r� r� r$ r\ ra rm r- r[ rp rv rY r r r r r { s r c @ sD e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd d� Z dS )�BaseChildWatcherc C rb r rc r r r r r$ � re zBaseChildWatcher.__init__c C rF r ro r r r r r- � rH zBaseChildWatcher.closec C rk r rl r r r r rm � rn zBaseChildWatcher.is_activec C rT r rU )r& � expected_pidr r r � _do_waitpid� r z BaseChildWatcher._do_waitpidc C rT r rU r r r r �_do_waitpid_all� r z BaseChildWatcher._do_waitpid_allc C s� |d u s t |tj�s J �| jd ur |d u r | jr t�dt� | jd ur*| j�t j � || _|d ur?|� t j | j � | � � d S d S rp )r^ r �AbstractEventLoopr� rd r2 r3 rq r1 rD �SIGCHLDrU � _sig_chldr rZ r r r r[ � s � �z BaseChildWatcher.attach_loopc C sZ z| � � W d S ttfy � ty, } z| j�d|d�� W Y d }~d S d }~ww )N�$Unknown exception in SIGCHLD handler)r r )r rs rt ru r� r r# r r r r� � s ���zBaseChildWatcher._sig_chldN) r� r� r� r$ r- rm r~ r r[ r� r r r r r| � s r| c sP e Zd ZdZ� fdd�Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z � Z S )r ad '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) c s | j �� t� �� d S r )rd r5 r# r- r r( r r r- s zSafeChildWatcher.closec C rf r r r r r r r\ rD zSafeChildWatcher.__enter__c C rg r r r] r r r ra rD zSafeChildWatcher.__exit__c G s ||f| j |< | �|� d S r )rd r~ rW r r r rp s z"SafeChildWatcher.add_child_handlerc C �$ z| j |= W dS ty Y dS w �NTF�rd rY rX r r r rY � �z%SafeChildWatcher.remove_child_handlerc C � t | j�D ]}| �|� qd S r �r0 rd r~ rX r r r r s �z SafeChildWatcher._do_waitpid_allc C s� |dksJ �z t �|t j�\}}W n ty$ |}d}t�d|� Y nw |dkr+d S t|�}| j�� r;t� d||� z | j � |�\}}W n t y_ | j�� r\tjd|dd� Y d S Y d S w |||g|�R � d S )Nr rx �8Unknown child process pid %d, will report returncode 255�$process %s exited with returncode %s�'Child watcher got an unexpected pid: %rTr ) r rz �WNOHANGr{ r r; r r� r� r rd ry rY )r& r} r� r! r� rP rQ r r r r~ % s8 �� � ���z SafeChildWatcher._do_waitpid) r� r� r� r� r- r\ ra rp rY r r~ r� r r r( r r � s r c sT e Zd ZdZ� fdd�Z� fdd�Zdd� Zdd � Zd d � Zd d � Z dd� Z � Z S )r aW 'Fast' child watcher implementation. This implementation reaps every terminated processes by calling os.waitpid(-1) directly, possibly breaking other code spawning processes and waiting for their termination. There is no noticeable overhead when handling a big number of children (O(1) each time a child terminates). c s$ t � �� t�� | _i | _d| _d S r� )r# r$ � threading�Lock�_lock�_zombies�_forksr r( r r r$ R s zFastChildWatcher.__init__c s" | j �� | j�� t� �� d S r )rd r5 r� r# r- r r( r r r- X s zFastChildWatcher.closec C s< | j � | jd7 _| W d � S 1 sw Y d S )Nr )r� r� r r r r r\ ] s $�zFastChildWatcher.__enter__c C sv | j �( | jd8 _| js| js W d � d S t| j�}| j�� W d � n1 s.w Y t�d|� d S )Nr z5Caught subprocesses termination from unknown pids: %s)r� r� r� rJ r5 r r; )r& r^ r_ r` �collateral_victimsr r r ra c s � � �zFastChildWatcher.__exit__c G s� | j sJ d��| j�( z| j�|�}W n ty* ||f| j|< Y W d � d S w W d � n1 s5w Y |||g|�R � d S )Nz Must use the context manager)r� r� r� ry rY rd )r& r� rP rQ r� r r r rp q s �� � z"FastChildWatcher.add_child_handlerc C r� r� r� rX r r r rY r� z%FastChildWatcher.remove_child_handlerc C s z t �dt j�\}}W n ty Y d S w |dkr d S t|�}| j�F z | j�|�\}}W n' tyV | j rR|| j |< | j � � rJt �d||� Y W d � q d }Y n w | j � � rct �d||� W d � n1 smw Y |d u r~t �d||� n |||g|�R � q)NTr; r z,unknown process %s exited with returncode %sr� z8Caught subprocess termination from unknown pid: %d -> %d)r rz r� r{ r r� rd ry rY r� r� r� r� r r r; )r& r� r! r� rP rQ r r r r � sH � �� � �� ���z FastChildWatcher._do_waitpid_all) r� r� r� r� r$ r- r\ ra rp rY r r� r r r( r r H s r c @ sh e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z dd� Z dd� Z dd� ZdS )r a~ 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). c C s i | _ d | _d S r )rd �_saved_sighandlerr r r r r$ � re z MultiLoopChildWatcher.__init__c C s | j d uS r )r� r r r r rm � r z MultiLoopChildWatcher.is_activec C sT | j �� | jd u r d S t�tj�}|| jkr t�d� nt�tj| j� d | _d S )Nz+SIGCHLD handler was changed by outside code) rd r5 r� rD � getsignalr� r� r r; )r& r] r r r r- � s zMultiLoopChildWatcher.closec C rf r r r r r r r\ � rD z MultiLoopChildWatcher.__enter__c C rg r r �r& rh �exc_val�exc_tbr r r ra � rD z MultiLoopChildWatcher.__exit__c G s& t �� }|||f| j|< | �|� d S r )r �get_running_looprd r~ )r& r� rP rQ r� r r r rp � s z'MultiLoopChildWatcher.add_child_handlerc C r� r� r� rX r r r rY � r� z*MultiLoopChildWatcher.remove_child_handlerc C sN | j d urd S t�tj| j�| _ | j d u r t�d� tj| _ t�tjd� d S )NzaPrevious SIGCHLD handler was set by non-Python code, restore to default handler on watcher close.F)r� rD r� r� r r; r\ rL rZ r r r r[ � s z!MultiLoopChildWatcher.attach_loopc C r� r r� rX r r r r � s �z%MultiLoopChildWatcher._do_waitpid_allc C s� |dksJ �z t �|t j�\}}W n ty& |}d}t�d|� d}Y n w |dkr-d S t|�}d}z | j�|�\}}}W n t yP tjd|dd� Y d S w |� � r^t�d||� d S |rk|� � rkt� d ||� |j |||g|�R � d S ) Nr rx r� FTr� r �%Loop %r that handles pid %r is closedr� )r rz r� r{ r r; r rd ry rY � is_closedr� r r� ) r& r} r� r! r� � debug_logr� rP rQ r r r r~ s< �� �� �z!MultiLoopChildWatcher._do_waitpidc C sD z| � � W d S ttfy � ty! tjddd� Y d S w )Nr� Tr )r rs rt ru r r; )r& r r r r r r� % s �z MultiLoopChildWatcher._sig_chldN)r� r� r� r� r$ rm r- r\ ra rp rY r[ r r~ r� r r r r r � s %r c @ sn e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z e j fdd�Z dd� Z dd� Zdd� Zdd� ZdS )r aA 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. c C s t �d�| _i | _d S r� )� itertoolsr� � _pid_counter�_threadsr r r r r$ ; r* z ThreadedChildWatcher.__init__c C r r" r r r r r rm ? rD z ThreadedChildWatcher.is_activec C s | � � d S r )� _join_threadsr r r r r- B s zThreadedChildWatcher.closec C s. dd� t | j�� �D �}|D ]}|�� qdS )z%Internal: Join all non-daemon threadsc S s g | ] }|� � r|js|�qS r )�is_alive�daemon��.0�threadr r r � <listcomp>G s � �z6ThreadedChildWatcher._join_threads.<locals>.<listcomp>N)r0 r� rr r� )r& �threadsr� r r r r� E s �z"ThreadedChildWatcher._join_threadsc C rf r r r r r r r\ L rD z ThreadedChildWatcher.__enter__c C rg r r r� r r r ra O rD z ThreadedChildWatcher.__exit__c C s: dd� t | j�� �D �}|r|| j� d�t| d� d S d S )Nc S s g | ]}|� � r|�qS r )r� r� r r r r� S s �z0ThreadedChildWatcher.__del__.<locals>.<listcomp>z0 has registered but not finished child processesr+ )r0 r� rr r) r4 )r& r r� r r r r R s ��z ThreadedChildWatcher.__del__c G sF t �� }tj| jdt| j�� �||||fdd�}|| j|< |�� d S )Nzwaitpid-T)�target�namerQ r� ) r r� r� �Threadr~ �nextr� r� �start)r& r� rP rQ r� r� r r r rp Z s � z&ThreadedChildWatcher.add_child_handlerc C r r" r rX r r r rY c s z)ThreadedChildWatcher.remove_child_handlerc C rg r r rZ r r r r[ i rD z ThreadedChildWatcher.attach_loopc C s� |dksJ �z t �|d�\}}W n ty# |}d}t�d|� Y nw t|�}|�� r3t�d||� |�� r?t�d||� n |j |||g|�R � | j � |� d S )Nr rx r� r� r� ) r rz r{ r r; r r� r r� r� r� ry )r& r� r} rP rQ r� r! r� r r r r~ l s( �� �z ThreadedChildWatcher._do_waitpidN)r� r� r� r� r$ rm r- r� r\ ra r2 r3 r rp rY r[ r~ r r r r r . s r c sH e Zd ZdZeZ� fdd�Zdd� Z� fdd�Zdd � Z d d � Z � Z S ) �_UnixDefaultEventLoopPolicyz:UNIX event loop policy with a watcher for child processes.c s t � �� d | _d S r )r# r$ �_watcherr r( r r r$ � s z$_UnixDefaultEventLoopPolicy.__init__c C s~ t j�2 | jd u r%t� | _t�� t�� u r-| j�| jj � W d � d S W d � d S W d � d S 1 s8w Y d S r ) r r� r� r r� �current_thread� main_threadr[ �_localr� r r r r � _init_watcher� s ��"�z)_UnixDefaultEventLoopPolicy._init_watcherc s> t � �|� | jdurt�� t�� u r | j�|� dS dS dS )z�Set the event loop. As a side effect, if a child watcher was set before, then calling .set_event_loop() from the main thread will call .attach_loop(loop) on the child watcher. N)r# �set_event_loopr� r� r� r� r[ rZ r( r r r� � s �z*_UnixDefaultEventLoopPolicy.set_event_loopc C s | j du r | �� | j S )z~Get the watcher for child processes. If not yet set, a ThreadedChildWatcher object is automatically created. N)r� r� r r r r rl � s z-_UnixDefaultEventLoopPolicy.get_child_watcherc C s4 |du s t |t�s J �| jdur| j�� || _dS )z$Set the watcher for child processes.N)r^ r r� r- )r& r} r r r �set_child_watcher� s z-_UnixDefaultEventLoopPolicy.set_child_watcher) r� r� r� r� r" � _loop_factoryr$ r� r� rl r� r� r r r( r r� � s r� )3r� rN r� r� r r� rD r� r� rL r. r� r2 � r r r r r r r r r r �logr �__all__r- � ImportErrorr r �BaseSelectorEventLoopr" � ReadTransportrb �_FlowControlMixin�WriteTransportrj �BaseSubprocessTransportro r r r| r r r r �BaseDefaultEventLoopPolicyr� r r r r r r �<module> sd � NON5Ji}Y2
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