ó ÄAic @ 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 ƒ Z y e Wn e k rë i Z n Xd „ Z d e f d „ ƒ 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 „ ƒ YZ* d e* f d „ ƒ YZ+ d „ Z, e$ e( d „ Z- e j. d k rÿd d l/ Z/ d f d „ ƒ YZ0 d e* f d „ ƒ 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. iÿÿÿÿN( t EALREADYt EINPROGRESSt EWOULDBLOCKt ECONNRESETt EINVALt ENOTCONNt ESHUTDOWNt EINTRt EISCONNt EBADFt ECONNABORTEDt EPIPEt EAGAINt errorcodec C sK y t j | ƒ 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 ƒ Wn$ t k r$ ‚ n | j ƒ 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 ƒ Wn$ t k r$ ‚ n | j ƒ n Xd S( N( t handle_write_eventR R ( R ( ( s /usr/lib64/python2.7/asyncore.pyt writeY s c C s9 y | j ƒ Wn$ t k r$ ‚ n | j ƒ n Xd S( N( t handle_expt_eventR R ( R ( ( s /usr/lib64/python2.7/asyncore.pyt _exceptiona s c C sä yz | t j @r | j ƒ n | t j @r7 | j ƒ n | t j @rQ | j ƒ n | t j t j Bt j B@ry | j ƒ n Wnc t j k r¼ } | j d t k r¯ | j ƒ qà | j ƒ n$ t k rÏ ‚ n | j ƒ 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 | rþg } g } g } x„ | j ƒ D]v \ } } | j ƒ } | j ƒ } | rt | j | ƒ n | r” | j r” | j | ƒ n | s | r: | j | ƒ q: q: Wg | k oÖ | k oÖ | k n rì t j | ƒ d Sy% t j | | | | ƒ \ } } } Wn3 t j k rF} | j d t k r?‚ qGd Sn Xx9 | D]1 } | j | ƒ } | d k ruqNn t | ƒ qNWx9 | D]1 } | j | ƒ } | d k r±qŠn t | ƒ qŠWx< | D]1 } | j | ƒ } | d k ríqÆn t | ƒ qÆWn d S( Ni ( t Nonet socket_mapt itemst readablet writablet appendt acceptingt timet sleepR! 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