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selector_events.cpython-310.pyc
o }5h @ s$ d Z dZddlZddlZddlZddlZddlZddlZddlZzddl Z W n e y1 dZ Y nw ddl m Z ddl m Z ddl mZ ddl mZ dd l mZ dd l mZ dd l mZ dd l mZ dd lmZ dd ZG dd de jZG dd dejejZG dd deZ G dd deZ dS )zEvent loop using a selector and related classes. A selector is a "notify-when-ready" multiplexer. For a subclass which also includes support for signal handling, see the unix_events sub-module. )BaseSelectorEventLoop N ) base_events) constants)events)futures) protocols)sslproto) transports)trsock)loggerc C s2 z| |}W n ty Y dS w t|j|@ S NF)get_keyKeyErrorboolr )selectorfdeventkey r ./usr/lib/python3.10/asyncio/selector_events.py_test_selector_event s r c s e Zd ZdZdS fdd ZdSdddddZ dSddddejd d d Z dTd d Z fddZ dd Z dd Z dd Z dd Zdd Zdddejfdd Zdddejfd d Zddejfd d Zd!d" Zd#d$ Zd%d& Zd'd( Zd)d* Zd+d, Zd-d. Zd/d0 Zd1d2 Zd3d4 Z dSd5d6Z d7d8 Z d9d: Z d;d< Z d=d> Z!d?d@ Z"dAdB Z#dCdD Z$dSdEdFZ%dGdH Z&dIdJ Z'dKdL Z(dMdN Z)dOdP Z*dQdR Z+ Z,S )Ur zJSelector event loop. See events.EventLoop for API specification. Nc sF t |d u r t }td|jj || _| t | _ d S )NzUsing selector: %s) super__init__ selectorsDefaultSelectorr debug __class____name__ _selector_make_self_pipeweakrefWeakValueDictionary _transports)selfr r r r r 1 s z BaseSelectorEventLoop.__init__extraserverc C t | |||||S N)_SelectorSocketTransport)r$ sockprotocolwaiterr' r( r r r _make_socket_transport; s z,BaseSelectorEventLoop._make_socket_transportF) server_sideserver_hostnamer' r( ssl_handshake_timeoutc C s0 t j| |||||| d} t| || ||d | jS )N)r2 r& )r SSLProtocolr+ _app_transport) r$ rawsockr- sslcontextr. r0 r1 r' r( r2 ssl_protocolr r r _make_ssl_transport@ s z)BaseSelectorEventLoop._make_ssl_transportc C r) r* )_SelectorDatagramTransport)r$ r, r- addressr. r' r r r _make_datagram_transportM s z.BaseSelectorEventLoop._make_datagram_transportc sP | rtd| rd S | t | jd ur&| j d | _d S d S )Nz!Cannot close a running event loop) is_running RuntimeError is_closed_close_self_piper closer r$ r% r r r@ R s zBaseSelectorEventLoop.closec C sB | | j | j d | _| j d | _| jd8 _d S )Nr )_remove_reader_ssockfilenor@ _csock _internal_fdsrA r r r r? ] s z&BaseSelectorEventLoop._close_self_pipec C sN t \| _| _| jd | jd | jd7 _| | j | j d S )NFr ) socket socketpairrC rE setblockingrF _add_readerrD _read_from_selfrA r r r r e s z%BaseSelectorEventLoop._make_self_pipec C s d S r* r r$ datar r r _process_self_datam z(BaseSelectorEventLoop._process_self_datac C sN z| j d}|s W d S | | W n ty Y q ty% Y d S w q)NTi )rC recvrN InterruptedErrorBlockingIOErrorrL r r r rK p s z%BaseSelectorEventLoop._read_from_selfc C sR | j }|d u r d S z|d W d S ty( | jr%tjddd Y d S Y d S w )N z3Fail to write a null byte into the self-pipe socketTexc_info)rE sendOSError_debugr r )r$ csockr r r _write_to_self| s z$BaseSelectorEventLoop._write_to_selfd c C s" | | | j|||||| d S r* )rJ rD _accept_connection)r$ protocol_factoryr, r6 r( backlogr2 r r r _start_serving s z$BaseSelectorEventLoop._start_servingc C s t |D ]}}z| \}} | jrtd|| | |d W nO tttfy, Y d S t ym } z6| j t j t j t j t jfv rb| d| t|d | | | tj| j|||||| n W Y d } ~ qd } ~ ww d| i} | ||| |||} | | qd S )Nz#%r got a new connection from %r: %rFz&socket.accept() out of system resource)message exceptionrG peername)rangeacceptrX r r rI rR rQ ConnectionAbortedErrorrW errnoEMFILEENFILEENOBUFSENOMEMcall_exception_handlerr TransportSocketrB rD call_laterr ACCEPT_RETRY_DELAYr_ _accept_connection2 create_task) r$ r] r, r6 r( r^ r2 _connaddrexcr' rd r r r r\ sH z(BaseSelectorEventLoop._accept_connectionc s d }d }z7| }| } |r | j|||| d|||d}n | j||| ||d}z | I d H W W d S ty< | w ttfyF ty| } z+| jrqd| d} |d ur]|| d< |d ure|| d< | | W Y d } ~ d S W Y d } ~ d S d } ~ ww )NT)r. r0 r' r( r2 )r. r' r( z3Error on transport creation for incoming connection)r` ra r- transport) create_futurer8 r/ BaseExceptionr@ SystemExitKeyboardInterruptrX rk ) r$ r] rr r' r6 r( r2 r- ru r. rt contextr r r ro sJ z)BaseSelectorEventLoop._accept_connection2c C s |}t |ts"zt| }W n tttfy! td|d w z| j| }W n ty3 Y d S w | sBt d|d|d S )NzInvalid file object: zFile descriptor z is used by transport ) isinstanceintrD AttributeError TypeError ValueErrorr# r is_closingr= )r$ r rD ru r r r _ensure_fd_no_transport s& z-BaseSelectorEventLoop._ensure_fd_no_transportc G s | t||| d }z| j|}W n ty) | j|tj|d f Y |S w |j|j }\}}| j ||tjB ||f |d urH| |S r* ) _check_closedr Handler r r registerr EVENT_READrM modifycancel r$ r callbackargshandler maskreaderwriterr r r rJ " z!BaseSelectorEventLoop._add_readerc C s | rdS z| j|}W n ty Y dS w |j|j}\}}|tj M }|s1| j| n | j ||d |f |d urE| dS dS )NFT) r> r r r r rM r r unregisterr r r$ r r r r r r r r rB s z$BaseSelectorEventLoop._remove_readerc G s | t||| d }z| j|}W n ty) | j|tjd |f Y |S w |j|j }\}}| j ||tjB ||f |d urH| |S r* ) r r r r r r r r EVENT_WRITErM r r r r r r _add_writer! r z!BaseSelectorEventLoop._add_writerc C s | rdS z| j|}W n ty Y dS w |j|j}\}}|tj M }|s1| j| n | j |||df |durE| dS dS )Remove a writer callback.FNT) r> r r r r rM r r r r r r r r r _remove_writer1 s z$BaseSelectorEventLoop._remove_writerc G " | | | j||g|R dS )zAdd a reader callback.N)r rJ r$ r r r r r r add_readerH z BaseSelectorEventLoop.add_readerc C | | | |S )zRemove a reader callback.)r rB r$ r r r r remove_readerM z#BaseSelectorEventLoop.remove_readerc G r )zAdd a writer callback..N)r r r r r r add_writerR r z BaseSelectorEventLoop.add_writerc C r )r )r r r r r r remove_writerW r z#BaseSelectorEventLoop.remove_writerc t | | jr| dkrtdz||W S ttfy$ Y nw | }| }| | | || j |||}| tj| j||d |I dH S )zReceive data from the socket. The return value is a bytes object representing the data received. The maximum amount of data to be received at once is specified by nbytes. r the socket must be non-blockingr N)r _check_ssl_socketrX gettimeoutr rP rR rQ rv rD r rJ _sock_recvadd_done_callback functoolspartial_sock_read_done)r$ r, nfutr r r r r sock_recv\ s" z BaseSelectorEventLoop.sock_recvc C " |d u s| s| | d S d S r* ) cancelledr r$ r r r r r r r r z%BaseSelectorEventLoop._sock_read_donec C | rd S z||}W n, ttfy Y d S ttfy" ty9 } z || W Y d }~d S d }~ww || d S r* ) donerP rR rQ rx ry rw set_exception set_result)r$ r r, r rM rt r r r r v s z BaseSelectorEventLoop._sock_recvc r )zReceive data from the socket. The received data is written into *buf* (a writable buffer). The return value is the number of bytes written. r r r N)r r rX r r recv_intorR rQ rv rD r rJ _sock_recv_intor r r r )r$ r, bufr r r r r r sock_recv_into s" z$BaseSelectorEventLoop.sock_recv_intoc C r r* ) r r rR rQ rx ry rw r r )r$ r r, r nbytesrt r r r r s z%BaseSelectorEventLoop._sock_recv_intoc s t | | jr| dkrtdz||}W n ttfy' d}Y nw |t|kr0dS | }| }| | | || j ||t||g}|tj| j||d |I dH S )a Send data to the socket. The socket must be connected to a remote socket. This method continues to send data from data until either all data has been sent or an error occurs. None is returned on success. On error, an exception is raised, and there is no way to determine how much data, if any, was successfully processed by the receiving end of the connection. r r Nr )r r rX r r rV rR rQ lenrv rD r r _sock_sendall memoryviewr r r _sock_write_done)r$ r, rM r r r r r r r sock_sendall s* z"BaseSelectorEventLoop.sock_sendallc C s | rd S |d }z |||d }W n, ttfy! Y d S ttfy* tyA } z || W Y d }~d S d }~ww ||7 }|t|krS| d d S ||d< d S )Nr ) r rV rR rQ rx ry rw r r r )r$ r r, viewposstartr rt r r r r s$ z#BaseSelectorEventLoop._sock_sendallc s t | | jr| dkrtd|jtjks"t jr;|jtj kr;| j ||j|j |j | dI dH }|d \}}}}}| }| ||| z|I dH W d}S d}w )zTConnect to a remote socket at address. This method is a coroutine. r r )familytypeprotoloopN)r r rX r r r rG AF_INET _HAS_IPv6AF_INET6_ensure_resolvedr r rv _sock_connect)r$ r, r: resolvedrq r r r r sock_connect s$ z"BaseSelectorEventLoop.sock_connectc C s | }zaz|| W nE ttfy2 | | | || j|||}|tj | j ||d Y n* t t fy; t yQ } z || W Y d }~nd }~ww |d W d }d S W d }d S W d }d S d }w )Nr )rD connectrR rQ r r _sock_connect_cbr r r r rx ry rw r r )r$ r r, r: r r rt r r r r s. z#BaseSelectorEventLoop._sock_connectc C r r* )r r r r r r r r z&BaseSelectorEventLoop._sock_write_donec C s | rd S zUz|tjtj}|dkr t|d| W n* ttfy( Y n* tt fy1 t yG } z | | W Y d }~nd }~ww | d W d }d S W d }d S W d }d S d }w )Nr zConnect call failed ) r getsockoptrG SOL_SOCKETSO_ERRORrW rR rQ rx ry rw r r )r$ r r, r: errrt r r r r s* z&BaseSelectorEventLoop._sock_connect_cbc sD t | | jr| dkrtd| }| || |I dH S )aW Accept a connection. The socket must be bound to an address and listening for connections. The return value is a pair (conn, address) where conn is a new socket object usable to send and receive data on the connection, and address is the address bound to the socket on the other end of the connection. r r N)r r rX r r rv _sock_accept)r$ r, r r r r sock_accept* s z!BaseSelectorEventLoop.sock_acceptc C s | }z | \}}|d W nF ttfy7 | | | || j||}|t j | j ||d Y d S t t fy@ tyW } z || W Y d }~d S d }~ww |||f d S )NFr )rD rd rI rR rQ r rJ r r r r r rx ry rw r r )r$ r r, r rr r: r rt r r r r 9 s" z"BaseSelectorEventLoop._sock_acceptc s | j |j= | }| | I d H z | j|j|||ddI d H W | |r.| || j |j< S | |r?| || j |j< w )NF)fallback) r# _sock_fd is_reading pause_reading_make_empty_waiter sock_sendfile_sock_reset_empty_waiterresume_reading)r$ transpfileoffsetcountr r r r _sendfile_nativeJ s" z&BaseSelectorEventLoop._sendfile_nativec C s |D ];\}}|j |j}\}}|tj@ r&|d ur&|jr!| | n| | |tj@ r=|d ur=|jr8| | q| | qd S r* ) fileobjrM r r _cancelledrB _add_callbackr r )r$ event_listr r r r r r r r _process_eventsX s z%BaseSelectorEventLoop._process_eventsc C s | | | d S r* )rB rD r@ )r$ r, r r r _stop_servingf s z#BaseSelectorEventLoop._stop_servingr* NNN)-r __module__ __qualname____doc__r r/ r SSL_HANDSHAKE_TIMEOUTr8 r; r@ r? r rN rK rZ r_ r\ ro r rJ rB r r r r r r r r r r r r r r r r r r r r r r __classcell__r r r% r r + sl . ) r c s e Zd ZdZeZdZd fdd Zdd Zdd Z d d Z d d Z d d Z dd Z ejfddZd ddZdd Zdd Zdd Zd d Z ZS ) _SelectorTransporti Nc s t || t|| jd< z | | jd< W n ty& d | jd< Y nw d| jvrEz | | jd< W n tj yD d | jd< Y nw || _ | | _ d| _ | | || _| | _d| _d| _| jd urm| j | |j| j < d S )NrG socknamerb Fr )r r r rl _extra getsocknamerW getpeernamerG errorr rD r _protocol_connected set_protocol_server_buffer_factory_buffer _conn_lost_closing_attachr# )r$ r r, r- r' r( r% r r r w s0 z_SelectorTransport.__init__c C s | j jg}| jd u r|d n| jr|d |d| j | jd urc| j sct| jj | jt j }|r=|d n|d t| jj | jt j }|rQd}nd}| }|d| d | d d d |S ) Nclosedclosingzfd=z read=pollingz read=idlepollingidlezwrite=<z , bufsize=>z<{}> )r r r appendr r _loopr> r r r r r get_write_buffer_sizeformatjoin)r$ infor statebufsizer r r __repr__ s. z_SelectorTransport.__repr__c C s | d d S r* ) _force_closerA r r r abort s z_SelectorTransport.abortc C s || _ d| _d S NT) _protocolr r$ r- r r r r s z _SelectorTransport.set_protocolc C | j S r* )r rA r r r get_protocol z _SelectorTransport.get_protocolc C r r* )r rA r r r r r z _SelectorTransport.is_closingc C sX | j rd S d| _ | j| j | js*| jd7 _| j| j | j| jd d S d S NTr ) r r rB r r r r call_soon_call_connection_lostrA r r r r@ s z_SelectorTransport.closec C s0 | j d ur|d| t| d | j d S d S )Nzunclosed transport )source)r ResourceWarningr@ )r$ _warnr r r __del__ s z_SelectorTransport.__del__Fatal error on transportc C sN t |tr| j rtjd| |dd n | j||| | jd | | d S )Nz%r: %sTrT )r` ra ru r- ) r{ rW r get_debugr r rk r r )r$ rt r` r r r _fatal_error s z _SelectorTransport._fatal_errorc C sd | j rd S | jr| j | j| j | js!d| _| j| j | j d7 _ | j| j | d S r ) r r clearr r r r rB r r r$ rt r r r r s z _SelectorTransport._force_closec C s z*| j r | j| W | j d | _d | _d | _| j}|d ur)| d | _d S d S | j d | _d | _d | _| j}|d urG| d | _w r* )r r connection_lostr r@ r r _detach)r$ rt r( r r r r s* z(_SelectorTransport._call_connection_lostc C s t | jS r* )r r rA r r r r z(_SelectorTransport.get_write_buffer_sizec G s$ | j rd S | jj||g|R d S r* )r r rJ r r r r rJ s z _SelectorTransport._add_reader)NN)r )r r r max_size bytearrayr r r r r r r r r@ warningswarnr r r r r rJ r r r r% r r k s" r c s e Zd ZdZejjZ d# fdd Z fddZ dd Z d d Z d d Z d d Z dd Zdd Zdd Zdd Zdd Zdd Zdd Z fd d Zd d Zd!d" Z ZS )$r+ TNc s d | _ t ||||| d| _d| _d | _t| j | j | j j | | j | j | j| j |d ur?| j tj|d d S d S r )_read_ready_cbr r _eof_paused _empty_waiterr _set_nodelayr r r r connection_maderJ r _read_readyr _set_result_unless_cancelled)r$ r r, r- r. r' r( r% r r r s z!_SelectorSocketTransport.__init__c s. t |tjr | j| _n| j| _t | d S r* )r{ r BufferedProtocol_read_ready__get_bufferr' _read_ready__data_receivedr r r r% r r r s z%_SelectorSocketTransport.set_protocolc C s | j o| j S r* )r) r rA r r r r s z#_SelectorSocketTransport.is_readingc C sB | j s| jrd S d| _| j| j | j r td| d S d S )NTz%r pauses reading)r r) r rB r r r r rA r r r r " s z&_SelectorSocketTransport.pause_readingc C sD | j s| jsd S d| _| | j| j | j r td| d S d S )NFz%r resumes reading) r r) rJ r r- r r r r rA r r r r * s z'_SelectorSocketTransport.resume_readingc C s | d S r* )r' rA r r r r- 2 s z$_SelectorSocketTransport._read_readyc C sD | j rd S z| jd}t|stdW n" ttfy ty7 } z | |d W Y d }~d S d }~ww z| j |}W n- t t fyL Y d S ttfyU tym } z | |d W Y d }~d S d }~ww |sv| d S z | j| W d S ttfy ty } z | |d W Y d }~d S d }~ww )Nz%get_buffer() returned an empty bufferz/Fatal error: protocol.get_buffer() call failed.$Fatal read error on socket transportz3Fatal error: protocol.buffer_updated() call failed.)r r get_bufferr r= rx ry rw r r r rR rQ _read_ready__on_eofbuffer_updated)r$ r rt r r r r r0 5 sP z0_SelectorSocketTransport._read_ready__get_bufferc C s | j rd S z | j| j}W n- ttfy Y d S ttfy# ty; } z | |d W Y d }~d S d }~ww |sD| d S z | j | W d S ttfyW tyo } z | |d W Y d }~d S d }~ww )Nr3 z2Fatal error: protocol.data_received() call failed.) r r rP r# rR rQ rx ry rw r r5 r data_received)r$ rM rt r r r r1 Z s4 z3_SelectorSocketTransport._read_ready__data_receivedc C s | j r td| z| j }W n" ttfy ty4 } z | |d W Y d }~d S d }~ww |r@| j | j d S | d S )Nz%r received EOFz1Fatal error: protocol.eof_received() call failed.) r r r r r eof_receivedrx ry rw r rB r r@ )r$ keep_openrt r r r r5 s s z,_SelectorSocketTransport._read_ready__on_eofc C s( t |tttfstdt|j| jrtd| j d ur"td|s&d S | j r=| j t j kr4t d | j d7 _ d S | jsz| j|}W n, ttfyS Y n, ttfy\ tyt } z | |d W Y d }~d S d }~ww ||d }|sd S | j| j| j | j | | d S )N/data argument must be a bytes-like object, not z%Cannot call write() after write_eof()z(unable to write; sendfile is in progress socket.send() raised exception.r %Fatal write error on socket transport) r{ bytesr$ r r~ r r r( r= r* r r !LOG_THRESHOLD_FOR_CONNLOST_WRITESr warningr r rV rR rQ rx ry rw r r r r _write_readyextend_maybe_pause_protocol)r$ rM r rt r r r write sB z _SelectorSocketTransport.writec C s8 | j sJ d| jr d S z | j| j }W nK ttfy! Y d S ttfy* ty` } z+| j | j | j | |d | jd urU| j| W Y d }~d S W Y d }~d S d }~ww |ri| j d |= | | j s| j | j | jd ur| jd | jr| d d S | jr| jtj d S d S d S )NzData should not be emptyr< )r r r rV rR rQ rx ry rw r r r r r r* r _maybe_resume_protocolr r r r( shutdownrG SHUT_WR)r$ r rt r r r r@ s> z%_SelectorSocketTransport._write_readyc C s2 | j s| jrd S d| _| js| jtj d S d S r )r r( r r rE rG rF rA r r r write_eof s z"_SelectorSocketTransport.write_eofc C s dS r r rA r r r can_write_eof rO z&_SelectorSocketTransport.can_write_eofc s. t | | jd ur| jtd d S d S )Nz Connection is closed by peer)r r r* r ConnectionErrorr r% r r r s z._SelectorSocketTransport._call_connection_lostc C s6 | j d ur td| j | _ | js| j d | j S )NzEmpty waiter is already set)r* r= r rv r r rA r r r r s z+_SelectorSocketTransport._make_empty_waiterc C s d | _ d S r* )r* rA r r r r r" z,_SelectorSocketTransport._reset_empty_waiterr )r r r _start_tls_compatibler _SendfileMode TRY_NATIVE_sendfile_compatibler r r r r r- r0 r1 r5 rC r@ rG rH r r r r r r r% r r+ s* %' r+ c sJ e Zd ZejZ d fdd Zdd Zdd Zd dd Z d d Z Z S )r9 Nc sb t |||| || _| j| jj| | j| j| j| j |d ur/| jt j |d d S d S r* ) r r _addressr r r r, rJ r r- r r. )r$ r r, r- r: r. r' r% r r r s z#_SelectorDatagramTransport.__init__c C s t dd | jD S )Nc s s | ] \}}t |V qd S r* )r ).0rM rq r r r <genexpr> s zC_SelectorDatagramTransport.get_write_buffer_size.<locals>.<genexpr>)sumr rA r r r r s z0_SelectorDatagramTransport.get_write_buffer_sizec C s | j rd S z | j| j\}}W nE ttfy Y d S ty4 } z | j| W Y d }~d S d }~w t t fy= t yU } z | |d W Y d }~d S d }~ww | j || d S )Nz&Fatal read error on datagram transport)r r recvfromr# rR rQ rW r error_receivedrx ry rw r datagram_receivedr$ rM rs rt r r r r- s z&_SelectorDatagramTransport._read_readyc C s| t |tttfstdt|j|sd S | jr+|d | jfvr(td| j | j}| j rE| jrE| j t j kr<t d | j d7 _ d S | jsz| jd rW| j| W d S | j|| W d S ttfyt | j| j| j Y n: ty } z | j| W Y d }~d S d }~w t t fy t y } z | |d W Y d }~d S d }~ww | j t||f | ! d S )Nr: z!Invalid address: must be None or r; r rb 'Fatal write error on datagram transport)"r{ r= r$ r r~ r r rN r r r r> r r? r r r rV sendtorR rQ r r r _sendto_readyrW r rS rx ry rw r r rB rU r r r rW sR z!_SelectorDatagramTransport.sendtoc C s | j ro| j \}}z| jd r| j| n| j|| W nL ttfy2 | j ||f Y n= t yJ } z | j | W Y d }~d S d }~w t t fyS tyk } z | |d W Y d }~d S d }~ww | j s| | j s| j| j | jr| d d S d S d S )Nrb rV )r popleftr r rV rW rR rQ appendleftrW r rS rx ry rw r rD r r r r r rU r r r rX 8 s> z(_SelectorDatagramTransport._sendto_readyr r* ) r r r collectionsdequer r r r- rW rX r r r r% r r9 s +r9 ) r __all__r[ rf r r rG r% r! ssl ImportError r r r r r r r r logr r BaseEventLoopr _FlowControlMixin Transportr r+ r9 r r r r <module> sH D o