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proactor_events.cpython-39.pyc
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Currently a proactor is only implemented on Windows with IOCP. )�BaseProactorEventLoop� N� )� base_events)� constants)�futures)� exceptions)� protocols)�sslproto)� transports)�trsock)�loggerc C s� t �|�| jd< z|�� | jd< W n. tjyP | j�� rLtj d|dd� Y n0 d| jvr�z|� � | jd< W n tjy� d | jd< Y n0 d S )N�socketZsocknamezgetsockname() failed on %rT��exc_info�peername) r �TransportSocket�_extra� getsocknamer �error�_loop� get_debugr �warning� getpeername)� transport�sock� r �//usr/lib64/python3.9/asyncio/proactor_events.py�_set_socket_extra s � r c s� e Zd ZdZd � fdd� Zdd� Zdd� Zd d � Zd d � Zd d� Z dd� Z e j fdd�Z d dd�Zdd� Zdd� Zdd� Z� ZS ) �_ProactorBasePipeTransportz*Base class for pipe and socket transports.Nc s� t � �||� | �|� || _| �|� || _d | _d | _d | _d| _ d| _ d| _ d| _ | jd url| j� � | j�| jj| � |d ur�| j�tj|d � d S )Nr F)�super�__init__� _set_extra�_sock� set_protocol�_server�_buffer� _read_fut� _write_fut�_pending_write� _conn_lost�_closing� _eof_writtenZ_attachr � call_soon� _protocolZconnection_mader Z _set_result_unless_cancelled��self�loopr �protocol�waiter�extra�server�� __class__r r r 2 s& �z#_ProactorBasePipeTransport.__init__c C s� | j jg}| jd u r |�d� n| jr0|�d� | jd urP|�d| j�� � �� | jd url|�d| j��� | jd ur�|�d| j��� | jr�|�dt | j�� �� | j r�|�d� d� d � |��S ) N�closed�closingzfd=zread=zwrite=zwrite_bufsize=z EOF writtenz<{}>� ) r6 �__name__r" �appendr* �filenor& r' r% �lenr+ �format�join)r/ �infor r r �__repr__H s z#_ProactorBasePipeTransport.__repr__c C s || j d< d S )N�pipe)r �r/ r r r r r! Z s z%_ProactorBasePipeTransport._set_extrac C s || _ d S �N�r- )r/ r1 r r r r# ] s z'_ProactorBasePipeTransport.set_protocolc C s | j S rD rE �r/ r r r � get_protocol` s z'_ProactorBasePipeTransport.get_protocolc C s | j S rD )r* rF r r r � is_closingc s z%_ProactorBasePipeTransport.is_closingc C s\ | j r d S d| _ | jd7 _| js>| jd u r>| j�| jd � | jd urX| j�� d | _d S )NTr ) r* r) r% r' r r, �_call_connection_lostr& �cancelrF r r r �closef s z _ProactorBasePipeTransport.closec C s* | j d ur&|d| ��t| d� | �� d S )Nzunclosed transport )�source)r" �ResourceWarningrK )r/ �_warnr r r �__del__q s z"_ProactorBasePipeTransport.__del__� Fatal error on pipe transportc C s` zNt |t�r*| j�� rBtjd| |dd� n| j�||| | jd�� W | �|� n | �|� 0 d S )Nz%r: %sTr )�message� exceptionr r1 ) � isinstance�OSErrorr r r �debug�call_exception_handlerr- � _force_close)r/ �excrQ r r r � _fatal_errorv s � z'_ProactorBasePipeTransport._fatal_errorc C s� | j d ur6| j �� s6|d u r*| j �d � n | j �|� | jr@d S d| _| jd7 _| jrj| j�� d | _| jr�| j�� d | _d| _ d | _ | j � | j |� d S )NTr r )� _empty_waiter�done� set_result� set_exceptionr* r) r' rJ r& r( r% r r, rI )r/ rX r r r rW � s" z'_ProactorBasePipeTransport._force_closec C s� zd| j �|� W t| jd�r8| j�� dkr8| j�tj� | j�� d | _| j }|d ur�|� � d | _ nVt| jd�r�| j�� dkr�| j�tj� | j�� d | _| j }|d ur�|� � d | _ 0 d S )N�shutdown���) r- Zconnection_lost�hasattrr" r< r^ r � SHUT_RDWRrK r$ Z_detach)r/ rX r4 r r r rI � s$ � z0_ProactorBasePipeTransport._call_connection_lostc C s" | j }| jd ur |t| j�7 }|S rD )r( r% r= )r/ �sizer r r �get_write_buffer_size� s z0_ProactorBasePipeTransport.get_write_buffer_size)NNN)rP )r: � __module__� __qualname__�__doc__r rA r! r# rG rH rK �warnings�warnrO rY rW rI rc � __classcell__r r r5 r r . s � r c sT e Zd ZdZd� fdd� Zdd� Zdd� Zd d � Zd d � Zd d� Z ddd�Z � Z S )�_ProactorReadPipeTransportzTransport for read pipes.Nc s: d | _ d| _t� �||||||� | j�| j� d| _d S )NTF)� _pending_data�_pausedr r r r, � _loop_readingr. r5 r r r � s z#_ProactorReadPipeTransport.__init__c C s | j o| j S rD )rl r* rF r r r � is_reading� s z%_ProactorReadPipeTransport.is_readingc C s0 | j s | jrd S d| _| j�� r,t�d| � d S )NTz%r pauses reading)r* rl r r r rU rF r r r � pause_reading� s z(_ProactorReadPipeTransport.pause_readingc C sn | j s | jsd S d| _| jd u r0| j�| jd � | j}d | _|d urT| j�| j|� | j�� rjt � d| � d S )NFz%r resumes reading) r* rl r& r r, rm rk �_data_receivedr r rU �r/ �datar r r �resume_reading� s z)_ProactorReadPipeTransport.resume_readingc C s~ | j �� rt�d| � z| j�� }W nH ttfy< � Y n2 tyl } z| � |d� W Y d }~d S d }~0 0 |sz| � � d S )Nz%r received EOFz1Fatal error: protocol.eof_received() call failed.) r r r rU r- Z eof_received� SystemExit�KeyboardInterrupt� BaseExceptionrY rK )r/ Z keep_openrX r r r � _eof_received� s �z(_ProactorReadPipeTransport._eof_receivedc C s� | j r | jd u sJ �|| _d S |s.| �� d S t| jtj�r�zt�| j|� W q� tt fyf � Y q� t y� } z| � |d� W Y d }~d S d }~0 0 n | j� |� d S )Nz3Fatal error: protocol.buffer_updated() call failed.) rl rk rw rS r- r ZBufferedProtocolZ _feed_data_to_buffered_protort ru rv rY Z data_received)r/ rr rX r r r rp � s$ �z)_ProactorReadPipeTransport._data_receivedc C s� d }�z�z�|d urP| j |u s0| j d u r,| js0J �d | _ |�� rH|�� }n|�� | jrtd }W W |d urp| �|� d S |dkr�W W |d ur�| �|� d S | js�| jj� | j d�| _ W n� t �y } z8| js�| � |d� n| j� � r�tjddd� W Y d }~n�d }~0 t�y2 } z| �|� W Y d }~nnd }~0 t�yb } z| � |d� W Y d }~n>d }~0 tj�y� | j�s|� Y n0 | j�s�| j �| j� W |d u�r�| �|� n|d u�r�| �|� 0 d S )N� i � z"Fatal read error on pipe transportz*Read error on pipe transport while closingTr )r& r* r[ �resultrJ rp rl r � _proactor�recvr" �ConnectionAbortedErrorrY r r rU �ConnectionResetErrorrW rT r �CancelledError�add_done_callbackrm )r/ �futrr rX r r r rm sV � � � � � z(_ProactorReadPipeTransport._loop_reading)NNN)N) r: rd re rf r rn ro rs rw rp rm ri r r r5 r rj � s � rj c s^ e Zd ZdZdZ� fdd�Zdd� Zddd �Zd d � Zd d � Z dd� Z dd� Z dd� Z � Z S )� _ProactorBaseWritePipeTransportzTransport for write pipes.Tc s t � j|i |�� d | _d S rD )r r rZ �r/ �args�kwr5 r r r G s z(_ProactorBaseWritePipeTransport.__init__c C s� t |tttf�s$tdt|�j� ���| jr2td��| j d urDtd��|sLd S | j rz| j t j krht �d� | j d7 _ d S | jd u r�| jd u s�J �| jt|�d� n.| js�t|�| _| �� n| j�|� | �� d S )Nz/data argument must be a bytes-like object, not zwrite_eof() already calledz(unable to write; sendfile is in progressz socket.send() raised exception.r )rr )rS �bytes� bytearray� memoryview� TypeError�typer: r+ � RuntimeErrorrZ r) r �!LOG_THRESHOLD_FOR_CONNLOST_WRITESr r r' r% � _loop_writing�_maybe_pause_protocol�extendrq r r r �writeK s2 �� z%_ProactorBaseWritePipeTransport.writeNc C s| �z|d ur"| j d u r"| jr"W d S || j u s0J �d | _ d| _|rH|�� |d u r\| j}d | _|s�| jrv| j�| jd � | jr�| j � t j � | � � n\| jj�| j |�| _ | j �� s�| jdks�J �t|�| _| j �| j� | �� n| j �| j� | jd u�r| j d u �r| j�d � W n` t�yF } z| �|� W Y d }~n:d }~0 t�yv } z| �|d� W Y d }~n d }~0 0 d S )Nr z#Fatal write error on pipe transport)r' r* r( ry r% r r, rI r+ r" r^ r �SHUT_WR�_maybe_resume_protocolrz �sendr[ r= r r� r� rZ r\ r} rW rT rY )r/ �frr rX r r r r� q s< z-_ProactorBaseWritePipeTransport._loop_writingc C s dS �NTr rF r r r � can_write_eof� s z-_ProactorBaseWritePipeTransport.can_write_eofc C s | � � d S rD )rK rF r r r � write_eof� s z)_ProactorBaseWritePipeTransport.write_eofc C s | � d � d S rD �rW rF r r r �abort� s z%_ProactorBaseWritePipeTransport.abortc C s: | j d urtd��| j�� | _ | jd u r4| j �d � | j S )NzEmpty waiter is already set)rZ r� r Z create_futurer' r\ rF r r r �_make_empty_waiter� s z2_ProactorBaseWritePipeTransport._make_empty_waiterc C s d | _ d S rD )rZ rF r r r �_reset_empty_waiter� s z3_ProactorBaseWritePipeTransport._reset_empty_waiter)NN)r: rd re rf Z_start_tls_compatibler r� r� r� r� r� r� r� ri r r r5 r r� A s & )r� c s$ e Zd Z� fdd�Zdd� Z� ZS )�_ProactorWritePipeTransportc s8 t � j|i |�� | jj�| jd�| _| j�| j� d S )N� ) r r r rz r{ r" r& r � _pipe_closedr� r5 r r r � s z$_ProactorWritePipeTransport.__init__c C sv |� � r d S |�� dks J �| jr4| jd u s0J �d S || ju sLJ || jf��d | _| jd urj| �t� � n| �� d S )Nrx )� cancelledry r* r& r' rW �BrokenPipeErrorrK )r/ r� r r r r� � s z(_ProactorWritePipeTransport._pipe_closed)r: rd re r r� ri r r r5 r r� � s r� c sX e Zd ZdZd� fdd� Zdd� Zdd� Zd d � Zdd d �Zdd d�Z ddd�Z � Z S )�_ProactorDatagramTransporti Nc s> || _ d | _t� j|||||d� t�� | _| j�| j � d S )N)r2 r3 ) �_addressrZ r r � collections�dequer% r r, rm )r/ r0 r r1 �addressr2 r3 r5 r r r � s z#_ProactorDatagramTransport.__init__c C s t | |� d S rD �r rC r r r r! � s z%_ProactorDatagramTransport._set_extrac C s t dd� | jD ��S )Nc s s | ]\}}t |�V qd S rD )r= )�.0rr �_r r r � <genexpr>� rx zC_ProactorDatagramTransport.get_write_buffer_size.<locals>.<genexpr>)�sumr% rF r r r rc � s z0_ProactorDatagramTransport.get_write_buffer_sizec C s | � d � d S rD r� rF r r r r� � s z _ProactorDatagramTransport.abortc C s� t |tttf�s tdt|���|s&d S | jd urN|d | jfvrNtd| j� ���| jr�| jr�| jt j krpt � d� | jd7 _d S | j �t|�|f� | jd u r�| �� | �� d S )Nz,data argument must be bytes-like object (%r)z!Invalid address: must be None or z!socket.sendto() raised exception.r )rS r� r� r� r� r� r� � ValueErrorr) r r� r r r% r; r' r� r� )r/ rr �addrr r r �sendto� s& � � z!_ProactorDatagramTransport.sendtoc C s z�| j rW d S || ju s J �d | _|r.|�� | jr@| j r\| jr\| jrV| j�| jd � W d S | j� � \}}| jd ur�| jj � | j |�| _n| jj j | j ||d�| _W n` ty� } z| j�|� W Y d }~nPd }~0 t�y } z| �|d� W Y d }~n d }~0 0 | j�| j� | �� d S )N)r� z'Fatal write error on datagram transport)r) r' ry r% r� r* r r, rI �popleftrz r� r" r� rT r- �error_received� ExceptionrY r r� r� )r/ r� rr r� rX r r r r� � s4 � � "z(_ProactorDatagramTransport._loop_writingc C s� d }�zxz�| j r*W W |r&| j�||� d S | j|u sH| jd u rD| jsHJ �d | _|d ur�|�� }| jr�d }W W |r~| j�||� d S | jd ur�|| j }}n|\}}| j r�W W |r�| j�||� d S | jd ur�| jj� | j | j �| _n| jj� | j | j �| _W nP t �y. } z| j�|� W Y d }~nBd }~0 tj�yL | j�sH� Y n 0 | jd u�rh| j�| j� W |�r�| j�||� n|�r�| j�||� 0 d S rD )r) r- Zdatagram_receivedr& r* ry r� r rz r{ r" �max_size�recvfromrT r� r r~ r rm )r/ r� rr r� �resrX r r r rm sZ $��� � � � �z(_ProactorDatagramTransport._loop_reading)NNN)N)N)N) r: rd re r� r r! rc r� r� r� rm ri r r r5 r r� � s � !r� c @ s e Zd ZdZdd� Zdd� ZdS )� _ProactorDuplexPipeTransportzTransport for duplex pipes.c C s dS )NFr rF r r r r� K s z*_ProactorDuplexPipeTransport.can_write_eofc C s t �d S rD )�NotImplementedErrorrF r r r r� N s z&_ProactorDuplexPipeTransport.write_eofN)r: rd re rf r� r� r r r r r� F s r� c sB e Zd ZdZejjZd � fdd� Zdd� Z dd� Z d d � Z � Z S ) �_ProactorSocketTransportz Transport for connected sockets.Nc s$ t � �||||||� t�|� d S rD )r r r Z _set_nodelayr. r5 r r r Y s z!_ProactorSocketTransport.__init__c C s t | |� d S rD r� rC r r r r! ^ s z#_ProactorSocketTransport._set_extrac C s dS r� r rF r r r r� a s z&_ProactorSocketTransport.can_write_eofc C s2 | j s | jrd S d| _| jd u r.| j�tj� d S r� )r* r+ r' r" r^ r r� rF r r r r� d s z"_ProactorSocketTransport.write_eof)NNN) r: rd re rf r Z _SendfileModeZ TRY_NATIVEZ_sendfile_compatibler r! r� r� ri r r r5 r r� R s �r� c s� e Zd Z� fdd�Zd3dd�Zd4dddddd�dd �Zd5d d �Zd6d d �Zd7dd�Zd8dd�Z � fdd�Z dd� Z dd� Z dd� Z dd� Zd d � Zd d � Zd d!� Zd"d#� Zd$d%� Zd9d&d'�Zd(d)� Zd:d+d,�Zd-d.� Zd/d0� Zd1d2� Z� ZS );r c sh t � �� t�d|jj� || _|| _d | _i | _ |� | � | � � t � � t �� u rdt�| j�� � d S )NzUsing proactor: %s)r r r rU r6 r: rz � _selector�_self_reading_future�_accept_futuresZset_loop�_make_self_pipe� threading�current_thread� main_thread�signal� set_wakeup_fd�_csockr< )r/ Zproactorr5 r r r n s z BaseProactorEventLoop.__init__Nc C s t | |||||�S rD )r� )r/ r r1 r2 r3 r4 r r r �_make_socket_transport{ s �z,BaseProactorEventLoop._make_socket_transportF)� server_side�server_hostnamer3 r4 �ssl_handshake_timeoutc C s0 t j| |||||| d�} t| || ||d� | jS )N)r� �r3 r4 )r Z SSLProtocolr� Z_app_transport) r/ Zrawsockr1 � sslcontextr2 r� r� r3 r4 r� Z ssl_protocolr r r �_make_ssl_transport� s ��z)BaseProactorEventLoop._make_ssl_transportc C s t | |||||�S rD )r� )r/ r r1 r� r2 r3 r r r �_make_datagram_transport� s �z.BaseProactorEventLoop._make_datagram_transportc C s t | ||||�S rD )r� �r/ r r1 r2 r3 r r r �_make_duplex_pipe_transport� s �z1BaseProactorEventLoop._make_duplex_pipe_transportc C s t | ||||�S rD )rj r� r r r �_make_read_pipe_transport� s z/BaseProactorEventLoop._make_read_pipe_transportc C s t | ||||�S rD )r� r� r r r �_make_write_pipe_transport� s �z0BaseProactorEventLoop._make_write_pipe_transportc sj | � � rtd��| �� r d S t�� t�� u r6t�d� | �� | � � | j � � d | _ d | _ t � � � d S )Nz!Cannot close a running event loopr_ )Z is_runningr� � is_closedr� r� r� r� r� �_stop_accept_futures�_close_self_piperz rK r� r rF r5 r r rK � s zBaseProactorEventLoop.closec � s | j �||�I d H S rD )rz r{ )r/ r �nr r r � sock_recv� s z BaseProactorEventLoop.sock_recvc � s | j �||�I d H S rD )rz � recv_into)r/ r �bufr r r �sock_recv_into� s z$BaseProactorEventLoop.sock_recv_intoc � s | j �||�I d H S rD )rz r� )r/ r rr r r r � sock_sendall� s z"BaseProactorEventLoop.sock_sendallc � s | j �||�I d H S rD )rz �connect)r/ r r� r r r � sock_connect� s z"BaseProactorEventLoop.sock_connectc � s | j �|�I d H S rD )rz �acceptrC r r r � sock_accept� s z!BaseProactorEventLoop.sock_acceptc � s> z |� � }W n4 ttjfy@ } zt�d��W Y d }~n d }~0 0 zt�|�j}W n t yn t�d��Y n0 |rx|n|}|s�dS t |d�}|r�t || |�n|} t ||�}d} zpt | | |�}|dkr�| W | dkr�|� |� S | j � ||||�I d H ||7 }| |7 } q�W | dk�r:|� |� n| dk�r8|� |� 0 d S )Nznot a regular filer l �� )r< �AttributeError�io�UnsupportedOperationr ZSendfileNotAvailableError�os�fstat�st_sizerT �min�seekrz �sendfile) r/ r �file�offset�countr< �err�fsize� blocksizeZend_pos� total_sentr r r �_sock_sendfile_native� s: � � z+BaseProactorEventLoop._sock_sendfile_nativec � sn |� � }|�� |�� I d H z4| j|j|||dd�I d H W |�� |rP|�� S n|�� |rh|�� 0 d S )NF)�fallback)rn ro r� Z 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\}}�jr,t�d�||� �� }�d urX�j||�dd|i��d� n�j||d|i�d� ��� r|W d S �j���} W n� t y� } zP�� � dkrȈ� d|t � ��d�� ��� n�jr�tjd �dd � W Y d }~n>d }~0 tj�y ��� Y n0 | �j�� � < | �� � d S ) Nz#%r got a new connection from %r: %rTr )r� r3 r4 r� r� r_ zAccept failed on a socket)rQ rR r zAccept failed on socket %rr )ry r� r rU r� r� r� rz r� rT r< rV r r rK r r~ r� r )r� �connr� r1 rX �r0 �protocol_factoryr/ r4 r r� r� r r r0 0 sJ ��� � �z2BaseProactorEventLoop._start_serving.<locals>.loop)N)r, )r/ r� r r� r4 �backlogr� r r� r �_start_serving, s %z$BaseProactorEventLoop._start_servingc C s d S rD r )r/ Z event_listr r r �_process_eventsW s z%BaseProactorEventLoop._process_eventsc C s& | j �� D ] }|�� q | j �� d S rD )r� �valuesrJ �clear)r/ �futurer r r r� [ s z*BaseProactorEventLoop._stop_accept_futuresc C s6 | j �|�� d �}|r |�� | j�|� |�� d S rD )r� �popr< rJ rz � _stop_servingrK )r/ r r� r r r r ` s z#BaseProactorEventLoop._stop_serving)NNN)N)NNN)NN)NN)NN)N)NNr� N)r: rd re r r� r� r� r� r� r� rK 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