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l m Z d d l m Z d d Z e e d rLd d Z n d d Z Gd d d e j Z Gd d d e j e j Z Gd d d e Z Gd d d e Z Gd d d e Z! d S) 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)compat) constants)events)futures) selectors)
transports)sslproto) coroutine)loggerc C sA y | j | } Wn t k
r+ d SYn Xt | j | @ Sd S)NF)get_keyKeyErrorboolr )selectorfdZeventkey r Z d? d@ Z e dA dB Z! dC dD Z" dE dF Z# dG dH Z$ dI dJ Z% dK dL Z& dM dN Z' dO dP Z( S)Qr zJSelector event loop.
See events.EventLoop for API specification.
Nc sa t j | d k r% t j } t j d | j j | | _ | j t
j | _ d S)NzUsing selector: %s)
super__init__r ZDefaultSelectorr
debug __class____name__ _selector_make_self_pipeweakrefWeakValueDictionary _transports)selfr )r! r r r < s
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zBaseSelectorEventLoop.closec C s
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z%BaseSelectorEventLoop._read_from_selfc C s[ | j } | d k rW y | j d Wn. t k
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z)BaseSelectorEventLoop._accept_connection2c C sN y | j | } Wn t k
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z!BaseSelectorEventLoop._add_writerc
C s | j r d Sy | j j | } Wn t k
r> d SYn{ X| j | j } \ } } | t j M} | s | j j | n | j j | | | d f | d k r | j
d Sd Sd S)zRemove a writer callback.FNT) r: r# r r r rG r rw rv rn ro )r( r r rs rt ru r r r _remove_writer7 s
z$BaseSelectorEventLoop._remove_writerc G s | j | | j | | | S)zAdd a reader callback.)ri rE )r( r rp rq r r r
add_readerN s
z BaseSelectorEventLoop.add_readerc C s | j | | j | S)zRemove a reader callback.)ri r? )r( r r r r
remove_readerS s
z#BaseSelectorEventLoop.remove_readerc G s | j | | j | | | S)zAdd a writer callback..)ri rx )r( r rp rq r r r
add_writerX s
z BaseSelectorEventLoop.add_writerc C s | j | | j | S)zRemove a writer callback.)ri ry )r( r r r r
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z#BaseSelectorEventLoop.remove_writerc C sM | j r' | j d k r' t d | j } | j | d | | | S)zReceive data from the socket.
The return value is a bytes object representing the data received.
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r z the socket must be non-blockingF)rO
gettimeout
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z BaseSelectorEventLoop.sock_recvc C s | j } | r | j | | j r/ d Sy | j | } Wnh t t f k
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# z BaseSelectorEventLoop._sock_recvc C sc | j r' | j d k r' t d | j } | rR | j | d | | n
| j d | S)a Send data to the socket.
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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.
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r z the socket must be non-blockingFN)rO r~ r rd
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z#BaseSelectorEventLoop._sock_sendallc c s | j r' | j d k r' t d t t d sI | j t j k r t j | d | j d | j d | } | j
s | Ed H| j d \ } } } } } | j } | j
| | | | Ed HS)zTConnect to a remote socket at address.
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r z the socket must be non-blockingAF_UNIXr r loopN)rO r~ r hasattrr r r r Z_ensure_resolvedr doneresultrd
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ro | j t j | j | | j | | j | | | Yn? t
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rA ZconnectrK rJ Zadd_done_callback functoolspartial_sock_connect_doner| _sock_connect_cbre r r )r( r r r7 r rb r r r r s z#BaseSelectorEventLoop._sock_connectc C s | j | d S)N)r} )r( r r r r r r s z(BaseSelectorEventLoop._sock_connect_donec C s | j r d Sy> | j t j t j } | d k rM t | d | f WnI t t f k
rh Yn? t k
r } z | j | WYd d } ~ Xn X| j
d d S)Nr zConnect call failed %s) r Z
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SOL_SOCKETZSO_ERRORrN rK rJ re r r )r( r r r7 errrb r r r r s z&BaseSelectorEventLoop._sock_connect_cbc C sJ | j r' | j d k r' t d | j } | j | d | | S)a| Accept a connection.
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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.
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r z the socket must be non-blockingF)rO r~ r rd _sock_accept)r( r r r r r sock_accept s
z!BaseSelectorEventLoop.sock_acceptc C s | j } | r | j | | j r/ d Sy# | j \ } } | j d Wne t t f k
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z"BaseSelectorEventLoop._sock_acceptc C s x | D] \ } } | j | j } \ } } | t j @rk | d k rk | j r^ | j | n
| j | | t j @r | d k r | j r | j | q | j | q Wd S)N) fileobjrG r rm Z
_cancelledr? Z
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event_listr rs r rt ru r r r _process_events
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__module__ __qualname____doc__r r. r4 r1 r8 r< r> r; r$ rH rF rP rU rR r r^ ri rE r? rx ry rz r{ r| r} r r r r r r r r r r r r r r )r! r r 6 sV
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e j r d d Z d d d Z d d Z d d Z d d Z S) _SelectorTransport i Nc s t j | | | | j d <| j | j d z<%s> )r! r" r appendr r _loopr: r r# r rm rw get_write_buffer_sizejoin)r( infor statebufsizer r r __repr__> s*
z_SelectorTransport.__repr__c C s | j d d S)N) _force_close)r( r r r abortZ s z_SelectorTransport.abortc C s
| | _ d S)N)r )r( r, r r r set_protocol] s z _SelectorTransport.set_protocolc C s | j S)N)r )r( r r r get_protocol` s z _SelectorTransport.get_protocolc C s | j S)N)r )r( r r r rg c s z _SelectorTransport.is_closingc C sn | j r
d Sd | _ | j j | j | j sj | j d 7_ | j j | j | j j | j d d S)NTr ) r r r? r r r ry call_soon_call_connection_lost)r( r r r r< f s z_SelectorTransport.closec C s4 | j d k r0 t j d | t | j j d S)Nzunclosed transport %r)r warningswarnResourceWarningr< )r( r r r __del__t s z_SelectorTransport.__del__zFatal error on transportc C sy t | t j r= | j j rh t j d | | d d n+ | j j d | d | d | d | j i | j | d S)Nz%r: %srL TrV rW rc r, )
isinstancer Z_FATAL_ERROR_IGNOREr get_debugr
r r] r r )r( rb rV r r r _fatal_errory s z _SelectorTransport._fatal_errorc C s | j r
d S| j r6 | j j | j j | j | j s[ d | _ | j j | j | j d 7_ | j j | j | d S)NTr )
r r clearr ry r r r? r r )r( rb r r r r s
z _SelectorTransport._force_closec C su z | j r | j j | Wd | j j d | _ d | _ d | _ | j } | d k rp | j d | _ Xd S)N)r r Zconnection_lostr r< r r Z_detach)r( rb r* r r r r s
z(_SelectorTransport._call_connection_lostc C s
t | j S)N)r r )r( r r r r s z(_SelectorTransport.get_write_buffer_sizei )r" r r max_size bytearrayr r r r r r r rg r< r ZPY34r r r r r r r )r! r r s
r c s e Z d Z d d d f d d Z d d Z d d Z d d Z d
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| j | j | d k r | j j t
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z!_SelectorSocketTransport.__init__c C si | j r t d | j r* t d d | _ | j j | j | j j re t j d | d S)Nz#Cannot pause_reading() when closingzAlready pausedTz%r pauses reading) r r9 r r r? r r r
r )r( r r r
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j k rx t j
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r } z | j | d d SWYd d } ~ Xn X| | d } | sd S| j j | j | j | j j | | j d S)Nz1data argument must be a bytes-like object, not %rz%Cannot call write() after write_eof()z socket.send() raised exception.r z%Fatal write error on socket transport)r bytesr
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z _SelectorSocketTransport.writec C s | j s t d | j r" d Sy | j j | j } Wnl t t f k
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z%_SelectorSocketTransport._write_readyc C s6 | j r
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z _SelectorSslTransport.__init__c C s^ | j d k r d S| j j sQ | d k rA | j j | n | j j d d | _ d S)N)r r r r )r( rb r r r _wakeup_waiterU s z$_SelectorSslTransport._wakeup_waiterc % C s y | j j Wnt j k
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r} zH | j j rt j
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z#_SelectorSslTransport._on_handshakec C si | j r t d | j r* t d d | _ | j j | j | j j re t j d | d S)Nz#Cannot pause_reading() when closingzAlready pausedTz%r pauses reading) r r9 r r r? r r r
r )r( r r r r s z#_SelectorSslTransport.pause_readingc C sg | j s t d d | _ | j r+ d S| j j | j | j | j j rc t j d | d S)Nz
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r )r( r r r r s z$_SelectorSslTransport.resume_readingc C sr | j r
d S| j rK d | _ | j | j rK | j j | j | j y | j j | j } Wn t
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r} z | j | d WYd d } ~ Xnm X| r| j j | nS zE | j j r=t j d | | j j } | r_t j d Wd | j Xd S)NFTz!Fatal read error on SSL transportz%r received EOFz?returning true from eof_received() has no effect when using ssl)r r r r r rx r r rI r rK rJ r r r r r? re r r r r r
r r r r< )r( rG rb r r r r r s4
#z!_SelectorSslTransport._read_readyc C s | j r
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r*} z9 | j j | j | j j | j | d d SWYd d } ~ Xn X| rA| j d | =| j | j s}| j j | j | j r}| j d d S)NFr Tz"Fatal write error on SSL transport)r r r r r r rE r r r rM rK rJ r r r ry r re r r r r )r( r rb r r r r s8
z"_SelectorSslTransport._write_readyc C s t | t t t f s1 t d t | j | s; d S| j rv | j t j k rc t
j d | j d 7_ d S| j s | j
j | j | j | j j | | j d S)Nz1data argument must be a bytes-like object, not %rz socket.send() raised exception.r )r r r r r r r" r r r r
r r r rx r r r r )r( rG r r r r s
z_SelectorSslTransport.writec C s d S)NFr )r( r r r r s z#_SelectorSslTransport.can_write_eof)r" r r r r r r r r r r r r r r r )r! r r5 - s "
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j | d d S)N) r r _addressr r r r rE r r r r )r( r r r, r7 r- r) )r! r r r s z#_SelectorDatagramTransport.__init__c C s t d d | j D S)Nc s s! | ] \ } } t | Vq d S)N)r ).0rG r_ r r r ' s zC_SelectorDatagramTransport.get_write_buffer_size..)sumr )r( r r r r & s z0_SelectorDatagramTransport.get_write_buffer_sizec C s | j r
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rF Yn| t k
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j k r t j
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