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asyncore.cpython-310.pyc
o Eh,O @ sx d Z ddlZddlZddlZddlZddlZddlZddlmZm Z m Z m Z m Z m Z mZmZmZmZmZmZmZ ejdedd ee e eeeehZze W n eyY i ZY nw dd ZG d d d e Z e e e fZ d d Z!d d Z"dd Z#dd Z$d)ddZ%d)ddZ&e&Z'd*ddZ(G d d d Z)G d d d e)Z*d d! Z+d+d"d#Z,ej-d$krG d%d& d&Z.G d'd( d(e)Z/dS dS ),a Basic infrastructure for asynchronous socket service clients and servers. There are only two ways to have a program on a single processor do "more than one thing at a time". Multi-threaded programming is the simplest and most popular way to do it, but there is another very different technique, that lets you have nearly all the advantages of multi-threading, without actually using multiple threads. it's really only practical if your program is largely I/O bound. If your program is CPU bound, then pre-emptive scheduled threads are probably what you really need. Network servers are rarely CPU-bound, however. If your operating system supports the select() system call in its I/O library (and nearly all do), then you can use it to juggle multiple communication channels at once; doing other work while your I/O is taking place in the "background." Although this strategy can seem strange and complex, especially at first, it is in many ways easier to understand and control than multi-threaded programming. The module documented here solves many of the difficult problems for you, making the task of building sophisticated high-performance network servers and clients a snap. N) EALREADY EINPROGRESS EWOULDBLOCK ECONNRESETEINVALENOTCONN ESHUTDOWNEISCONNEBADF ECONNABORTEDEPIPEEAGAIN errorcodezlThe asyncore module is deprecated and will be removed in Python 3.12. The recommended replacement is asyncio ) stacklevelc C sB zt | W S tttfy | tv rt| Y S d| Y S w )NzUnknown error %s)osstrerror ValueError OverflowError NameErrorr )err r /usr/lib/python3.10/asyncore.py _strerrorK s r c @ s e Zd ZdS )ExitNowN)__name__ __module__ __qualname__r r r r r S s r c C 2 z| W d S ty | Y d S N)handle_read_event_reraised_exceptions handle_errorobjr r r readX r% c C r r )handle_write_eventr! r" r# r r r write` r& r( c C r r )handle_expt_eventr! r" r# r r r _exceptionh r& r* c C s z0|t j@ r | |t j@ r| |t j@ r | |t jt jB t j B @ r.| W d S W d S t yX } z |j t vrB| n | W Y d }~d S W Y d }~d S d }~w ty_ | Y d S r )selectPOLLINr POLLOUTr' POLLPRIr) POLLHUPPOLLERRPOLLNVAL handle_closeOSErrorerrno _DISCONNECTEDr" r! )r$ flagser r r readwritep s( r8 c C s6 |d u rt }|rg }g }g }t| D ]&\}}| }| }|r'|| |r1|js1|| |s5|r:|| qg | krJ| krJ|krSn nt| d S t |||| \}}}|D ]}| |}|d u rlq`t | q`|D ]}| |}|d u rqst | qs|D ]}| |}|d u rqt | qd S d S r ) socket_maplistitemsreadablewritableappend acceptingtimesleepr+ getr% r( r* ) timeoutmaprwr7 fdr$ is_ris_wr r r poll sF " rK c C s |d u rt }| d urt| d } t }|r^t| D ]&\}}d}| r.|tjtjB O }| r:|j s:|tj O }|rB| || q || }|D ]\}}| |}|d u rXqJt|| qJd S d S )Ni r )r: intr+ rK r; r< r= r, r. r> r@ r- registerrC r8 )rD rE pollsterrH r$ r6 rF r r r poll2 s. rO >@Fc C s |d u rt }|rttdrt}nt}|d u r#|r!|| | |sd S d S |r:|dkr>|| | |d }|r<|dks)d S d S d S d S )NrK r )r: hasattrr+ rO rK )rD use_pollrE countpoll_funr r r loop s rV c @ s2 e Zd ZdZdZdZdZdZdZe dhZ dAddZ dd Z dBdd Z dBd d Zejejfd d ZdBddZdd Zdd Zdd Zdd Zdd Zdd Zd d Zd d Zd d! 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Z"d/d0 Z#d1d2 Z$d3d4 Z%d5d6 Z&d7d8 Z'd9d: Z(d;d< Z)d=d> Z*d?d@ Z+dS )D dispatcherFNwarningc C s |d u rt | _n|| _d | _|rK|d | || d| _z| | _W d S tyJ } z|j t t fv r9d| _n| | W Y d }~d S d }~ww d | _ d S )NFT)r: _map_fileno setblocking set_socket connected getpeernameaddrr3 r4 r r del_channelsocket)selfsockrE r r r r __init__ s& zdispatcher.__init__c C s | j jd | j j g}| jr| jr|d n| jr |d | jd ur@z |d| j W n ty? |t| j Y nw dd |t | f S )N. listeningr] z%s:%dz <%s at %#x> ) __class__r r r@ r_ r? r] TypeErrorreprjoinid)rb statusr r r __repr__ s zdispatcher.__repr__c C s |d u r| j }| || j< d S r )rY rZ )rb rE r r r add_channel s zdispatcher.add_channelc C s, | j }|d u r | j}||v r||= d | _ d S r )rZ rY )rb rE rH r r r r` s zdispatcher.del_channelc C s. ||f| _ t||}|d | | d S NF)family_and_typera r[ r\ )rb familytyperc r r r create_socket s zdispatcher.create_socketc C s || _ | | _| | d S r )ra filenorZ ro rb rc rE r r r r\ % s zdispatcher.set_socketc C sB z| j t jt j| j t jt jdB W d S ty Y d S w )NrQ )ra setsockopt SOL_SOCKET SO_REUSEADDR getsockoptr3 rb r r r set_reuse_addr* s zdispatcher.set_reuse_addrc C dS NTr r{ r r r r= ; zdispatcher.readablec C r} r~ r r{ r r r r> > r zdispatcher.writablec C s( d| _ tjdkr|dkrd}| j|S )NTnt )r@ r namera listen)rb numr r r r E s zdispatcher.listenc C s || _ | j|S r )r_ ra bind)rb r_ r r r r K s zdispatcher.bindc C sn d| _ d| _| j|}|tttfv s |tkr!tj dkr!|| _ d S |dt fv r0|| _ | d S t |t| )NFTr r )r] connectingra connect_exr r r r r r r_ r handle_connect_eventr3 r )rb addressr r r r connectO s zdispatcher.connectc C sd z | j \}}W ||fS ty Y d S ty1 } z|jtttfv r,W Y d }~d S d }~ww r )ra acceptri r3 r4 r r r )rb connr_ whyr r r r ] s zdispatcher.acceptc C sf z | j |}|W S ty2 } z |jtkr W Y d }~dS |jtv r-| W Y d }~dS d }~ww Nr )ra sendr3 r4 r r5 r2 )rb dataresultr r r r r k s zdispatcher.sendc C s` z| j |}|s| W dS |W S ty/ } z|jtv r*| W Y d }~dS d }~ww N )ra recvr2 r3 r4 r5 )rb buffer_sizer r r r r r x s zdispatcher.recvc C sp d| _ d| _d| _| | jd ur6z| j W d S ty5 } z|jtt fvr* W Y d }~d S d }~ww d S rp ) r] r@ r r` ra closer3 r4 r r )rb r r r r r s zdispatcher.closec C s t jdt| d S )Nzlog: %s )sysstderrr( str)rb messager r r log s zdispatcher.loginfoc C s" || j vrtd||f d S d S )Nz%s: %s)ignore_log_typesprint)rb r rs r r r log_info s zdispatcher.log_infoc C s> | j r | d S | js| jr| | d S | d S r )r@ handle_acceptr] r r handle_readr{ r r r r s z dispatcher.handle_read_eventc C s@ | j t jt j}|dkrt|t|| d| _d| _d S )Nr TF) ra rz rx SO_ERRORr3 r handle_connectr] r rb r r r r r s z dispatcher.handle_connect_eventc C s* | j rd S | js| jr| | d S r )r@ r] r r handle_writer{ r r r r' s z dispatcher.handle_write_eventc C s2 | j t jt j}|dkr| d S | d S r )ra rz rx r r2 handle_exptr r r r r) s z dispatcher.handle_expt_eventc C sT t \}}}}zt| }W n dt| }Y | d||||f d | d S )Nz)<__repr__(self) failed for object at %0x>z:uncaptured python exception, closing channel %s (%s:%s %s)error)compact_tracebackrj rl r r2 )rb niltvtbinfo self_reprr r r r" s zdispatcher.handle_errorc C | dd d S )Nz!unhandled incoming priority eventrX r r{ r r r r zdispatcher.handle_exptc C r )Nzunhandled read eventrX r r{ r r r r r zdispatcher.handle_readc C r )Nzunhandled write eventrX r r{ r r r r r zdispatcher.handle_writec C r )Nzunhandled connect eventrX r r{ r r r r r zdispatcher.handle_connectc C s" | }|d ur| j| d S d S r )r handle_accepted)rb pairr r r r s zdispatcher.handle_acceptc C s | | dd d S )Nzunhandled accepted eventrX )r r )rb rc r_ r r r r s zdispatcher.handle_acceptedc C s | dd | d S )Nzunhandled close eventrX )r r r{ r r r r2 s zdispatcher.handle_closeNNr )r ),r r r debugr] r@ r closingr_ frozensetr rd rn ro r` ra AF_INET SOCK_STREAMrt r\ r| r= r> r r r r r r r r r r r r' r) r" r r r r r r r2 r r r r rW sL rW c @ s6 e Zd Zd ddZdd Zdd Zdd Zd d ZdS ) dispatcher_with_sendNc C s t | || d| _d S r )rW rd out_bufferrv r r r rd s z dispatcher_with_send.__init__c C s. d}t | | jd d }| j|d | _d S )Nr i )rW r r )rb num_sentr r r initiate_send s z"dispatcher_with_send.initiate_sendc C s | d S r )r r{ r r r r s z!dispatcher_with_send.handle_writec C s | j pt| jS r )r] lenr r{ r r r r> s z dispatcher_with_send.writablec C s0 | j r | dt| | j| | _| d S )Nz sending %s)r r rj r r )rb r r r r r s zdispatcher_with_send.sendr )r r r rd r r r> r r r r r r s r c C s t \} }}g }|std|r'||jjj|jjjt|j f |j }|s~|d \}}}d dd |D }|||f| ||fS )Nztraceback does not existrg c S s g | ]}d | qS )z [%s|%s|%s]r ).0xr r r <listcomp>- s z%compact_traceback.<locals>.<listcomp>) r exc_infoAssertionErrorr? tb_framef_code co_filenameco_namer tb_linenotb_nextrk )r r tbr filefunctionliner r r r r s r c C s | d u rt } t| D ]1}z| W q ty/ } z|jtkr"n|s% W Y d }~q d }~w ty6 |s< Y q | d S r ) r: r; valuesr r3 r4 r r! clear)rE ignore_allr r r r close_all0 s$ r posixc @ sN e Zd Zdd Zdd Zdd Zdd Zdd d ZeZeZ d d Z dd Z d S ) file_wrapperc C s t || _d S r )r duprH rb rH r r r rd U r zfile_wrapper.__init__c C s* | j dkrtjd| t| d | d S )Nr zunclosed file %r)source)rH warningswarnResourceWarningr r{ r r r __del__X s zfile_wrapper.__del__c G t j| jg|R S r )r r% rH rb argsr r r r ^ zfile_wrapper.recvc G r r )r r( rH r r r r r a r zfile_wrapper.sendNc C s$ |t jkr|t jkr|sdS td)Nr z-Only asyncore specific behaviour implemented.)ra rx r NotImplementedError)rb leveloptnamebuflenr r r rz d s zfile_wrapper.getsockoptc C s( | j dk rd S | j }d| _ t| d S )Nr r )rH r r r r r r r o s zfile_wrapper.closec C s | j S r )rH r{ r r r ru v s zfile_wrapper.filenor ) r r r rd r r r rz r% r( r ru r r r r r P s r c @ s e Zd ZdddZdd ZdS )file_dispatcherNc C sN t | d | d| _z| }W n ty Y nw | | t|d d S )NTF)rW rd r] ru AttributeErrorset_filer set_blocking)rb rH rE r r r rd { s zfile_dispatcher.__init__c C s" t || _| j | _| d S r )r ra ru rZ ro r r r r r s zfile_dispatcher.set_filer )r r r rd r r r r r r y s r )r9 N)rP FNNrp )0__doc__r+ ra r rA r r r4 r r r r r r r r r r r r r r DeprecationWarningr r5 r: r r Exceptionr KeyboardInterrupt SystemExitr! r% r( r* r8 rK rO poll3rV rW r r r r r r r r r r <module> sT < ' * )