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� z fc @ s d Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l m Z m Z m Z m Z m Z m Z m Z m Z m Z m Z m Z m Z m Z m Z e e e e e e e f � Z y e Wn e k r� i Z n Xd � Z d e f d � � YZ e e e f Z d � Z d � Z! d � Z" d � Z# d e$ d � Z% d e$ d � Z& e& Z' d e( e$ e$ d � Z) d f d � � YZ* d e* f d � � YZ+ d � Z, e$ e( d � Z- e j. d k r�d d l/ Z/ d f d � � YZ0 d e* f d � � YZ1 n d S( s� 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. i����N( t EALREADYt EINPROGRESSt EWOULDBLOCKt ECONNRESETt EINVALt ENOTCONNt ESHUTDOWNt EINTRt EISCONNt EBADFt ECONNABORTEDt EPIPEt EAGAINt errorcodec C sK y t j | � SWn3 t t t f k rF | t k r> t | Sd | SXd S( Ns Unknown error %s( t ost strerrort ValueErrort OverflowErrort NameErrorR ( t err( ( s /usr/lib64/python2.7/asyncore.pyt _strerrorD s t ExitNowc B s e Z RS( ( t __name__t __module__( ( ( s /usr/lib64/python2.7/asyncore.pyR L s c C s9 y | j � Wn$ t k r$ � n | j � n Xd S( N( t handle_read_eventt _reraised_exceptionst handle_error( t obj( ( s /usr/lib64/python2.7/asyncore.pyt readQ s c C s9 y | j � Wn$ t k r$ � n | j � n Xd S( N( t handle_write_eventR R ( R ( ( s /usr/lib64/python2.7/asyncore.pyt writeY s c C s9 y | j � Wn$ t k r$ � n | j � n Xd S( N( t handle_expt_eventR R ( R ( ( s /usr/lib64/python2.7/asyncore.pyt _exceptiona s c C s� yz | t j @r | j � n | t j @r7 | j � n | t j @rQ | j � n | t j t j Bt j B@ry | j � n Wnc t j k r� } | j d t k r� | j � q� | j � n$ t k r� � n | j � n Xd S( Ni ( t selectt POLLINR t POLLOUTR t POLLPRIR t POLLHUPt POLLERRt POLLNVALt handle_closet sockett errort argst _DISCONNECTEDR R ( R t flagst e( ( s /usr/lib64/python2.7/asyncore.pyt readwritei s" g c C s | d k r t } n | r�g } g } g } x� | j � D]v \ } } | j � } | j � } | rt | j | � n | r� | j r� | j | � n | s� | r: | j | � q: q: Wg | k o� | k o� | k n r� t j | � d Sy% t j | | | | � \ } } } Wn3 t j k rF} | j d t k r?� qGd Sn Xx9 | D]1 } | j | � } | d k ruqNn t | � qNWx9 | D]1 } | j | � } | d k r�q�n t | � q�Wx< | D]1 } | j | � } | d k r�q�n t | � q�Wn d S( Ni ( t Nonet socket_mapt itemst readablet writablet appendt acceptingt timet sleepR! 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Use %(me)s.socket.%(attr)s instead.t met attrt stackleveli ( t getattrR) t AttributeErrorR] R t warningst warnt DeprecationWarning( RW R� t retattrt msg( ( s /usr/lib64/python2.7/asyncore.pyt __getattr__� s c C s t j j d t | � � d S( Ns log: %s ( t syst stderrR t str( RW t message( ( s /usr/lib64/python2.7/asyncore.pyt log� s t infoc C s% | | j k r! d | | f GHn d S( Ns %s: %s( t ignore_log_types( RW R� Rg ( ( s /usr/lib64/python2.7/asyncore.pyt log_info� s c C sP | j r | j � n6 | j sB | j r5 | j � n | j � n | j � d S( N( R6 t handle_acceptRR Ru Rw t handle_read( RW ( ( s /usr/lib64/python2.7/asyncore.pyR � s c C sb | j j t j t j � } | d k rB t j | t | � � � n | j � t | _ t | _ d S( Ni ( R) Rm Rk t SO_ERRORR* R t handle_connectRQ RR RU Ru ( RW R ( ( s /usr/lib64/python2.7/asyncore.pyRw � s c C s= | j r d S| j s/ | j r/ | j � q/ n | j � d S( N( R6 RR Ru Rw t handle_write( RW ( ( s /usr/lib64/python2.7/asyncore.pyR � s c C sB | j j t j t j � } | d k r4 | j � n | j � d S( Ni ( R) Rm Rk R� R( t handle_expt( RW R ( ( s /usr/lib64/python2.7/asyncore.pyR � s c C sm t � \ } } } } y t | � } Wn d t | � } n X| j d | | | | f d � | j � d S( Ns) <__repr__(self) failed for object at %0x>s: uncaptured python exception, closing channel %s (%s:%s %s)R* ( t compact_tracebackR_ Ra R� R( ( RW t nilt tt vt tbinfot self_repr( ( s /usr/lib64/python2.7/asyncore.pyR � s c C s | j d d � d S( Ns! unhandled incoming priority eventRL ( R� ( RW ( ( s /usr/lib64/python2.7/asyncore.pyR� � s c C s | j d d � d S( Ns unhandled read eventRL ( R� ( RW ( ( s /usr/lib64/python2.7/asyncore.pyR� � s c C s | j d d � d S( Ns unhandled write eventRL ( R� ( RW ( ( s /usr/lib64/python2.7/asyncore.pyR� � s c C s | j d d � d S( Ns unhandled connect eventRL ( R� ( RW ( ( s /usr/lib64/python2.7/asyncore.pyR� s c C s | j d d � d S( Ns unhandled accept eventRL ( R� ( RW ( ( s /usr/lib64/python2.7/asyncore.pyR� s c C s | j d d � | j � d S( Ns unhandled close eventRL ( R� R� ( RW ( ( s /usr/lib64/python2.7/asyncore.pyR( s N(+ R R RU t debugRR R6 Ru t closingR0 RT t frozensetR� RY Rc t __str__Rd RV Rh RP Rn R3 R4 Rq Rs Ry Rz R} R� R� R� R� R� R Rw R R R R� R� R� R� R� R( ( ( ( s /usr/lib64/python2.7/asyncore.pyRK � sL t dispatcher_with_sendc B s; e Z d d d � Z d � Z d � Z d � Z d � Z RS( c C s t j | | | � d | _ d S( NR� ( RK RY t out_buffer( RW RX R; ( ( s /usr/lib64/python2.7/asyncore.pyRY s c C s3 d } t j | | j d � } | j | | _ d S( Ni i ( RK R} R� ( RW t num_sent( ( s /usr/lib64/python2.7/asyncore.pyt initiate_send s c C s | j � d S( N( R� ( RW ( ( s /usr/lib64/python2.7/asyncore.pyR� s c C s | j p t | j � S( N( RR t lenR� ( RW ( ( s /usr/lib64/python2.7/asyncore.pyR4 s c C sA | j r# | j d t | � � n | j | | _ | j � d S( Ns sending %s( R� R� R_ R� R� ( RW R~ ( ( s /usr/lib64/python2.7/asyncore.pyR} " s N( R R R0 RY R� R� R4 R} ( ( ( s /usr/lib64/python2.7/asyncore.pyR� s c C s� t j � \ } } } g } | s0 t d � � n xD | rv | j | j j j | j j j t | j � f � | j } q3 W~ | d \ } } } d j g | D] } d | ^ q� � } | | | f | | | f S( Ns traceback does not existi����R\ s [%s|%s|%s]( R� t exc_infot AssertionErrorR5 t tb_framet f_codet co_filenamet co_nameR� t tb_linenot tb_nextR` ( R� R� t tbR� t filet functiont linet xR� ( ( s /usr/lib64/python2.7/asyncore.pyR� , s &c C s� | d k r t } n x | j � D]q } y | j � Wq" t k rm } | j d t k r^ q� | s� � q� q" t k r� � q" | s� � q� q" Xq" W| j � d S( Ni ( R0 R1 t valuesR� t OSErrorR+ R R t clear( R; t ignore_allR� ( ( s /usr/lib64/python2.7/asyncore.pyt close_all@ s t posixt file_wrapperc B sM e Z d � Z d � Z d � Z d d � Z e Z e Z d � Z d � Z RS( c C s t j | � | _ d S( N( R t dupR> ( RW R> ( ( s /usr/lib64/python2.7/asyncore.pyRY g s c G s t j | j | � S( N( R R R> ( RW R+ ( ( s /usr/lib64/python2.7/asyncore.pyR� j s c G s t j | j | � S( N( R R R> ( RW R+ ( ( s /usr/lib64/python2.7/asyncore.pyR} m s c C s9 | t j k r) | t j k r) | r) d St d � � d S( Ni s- Only asyncore specific behaviour implemented.( R) Rk R� t NotImplementedError( RW t levelt optnamet buflen( ( s /usr/lib64/python2.7/asyncore.pyRm p s c C s6 | j d k r d S| j } d | _ t j | � d S( Ni i����( R> R R� ( RW R> ( ( s /usr/lib64/python2.7/asyncore.pyR� { s c C s | j S( N( R> ( RW ( ( s /usr/lib64/python2.7/asyncore.pyRi � s N( R R RY R� R} R0 Rm R R R� Ri ( ( ( s /usr/lib64/python2.7/asyncore.pyR� b s t file_dispatcherc B s e Z d d � Z d � Z RS( c C s� t j | d | � t | _ y | j � } Wn t k r? n X| j | � t j | t j d � } | t j B} t j | t j | � d S( Ni ( RK RY R0 RQ RR Ri R� t set_filet fcntlt F_GETFLR t O_NONBLOCKt F_SETFL( RW R> R; R- ( ( s /usr/lib64/python2.7/asyncore.pyRY � s c C s/ t | � | _ | j j � | _ | j � d S( N( R� R) Ri RN Rd ( RW R> ( ( s /usr/lib64/python2.7/asyncore.pyR� � s N( R R R0 RY R� ( ( ( s /usr/lib64/python2.7/asyncore.pyR� � s (2 t __doc__R! 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