OwlCyberSecurity - MANAGER
Edit File: asyncore.cpython-34.pyc
� j fR � @ 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 e e e e e e e f � Z y e Wn e k r� i Z Yn Xd d � Z Gd d � d e � Z e e e f Z d d � Z d d � Z d d � Z! d d � Z" d d d d � Z# d d d d � Z$ e$ Z% d d d d d d � Z& Gd d � d � Z' Gd d � d e' � Z( d d � Z) d d d d � Z* e j+ d! k rd d l, Z, Gd" d# � d# � Z- Gd$ d% � d% e' � Z. n d S)&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� ECONNRESET�EINVAL�ENOTCONN� ESHUTDOWN�EISCONN�EBADF� ECONNABORTED�EPIPE�EAGAIN� errorcodec C sO y t j | � SWn7 t t t f k rJ | t k r> t | Sd | SYn Xd S)NzUnknown error %s)�os�strerror� ValueError� OverflowError� NameErrorr )�err� r �-/opt/alt/python34/lib64/python3.4/asyncore.py� _strerrorD s r c @ s e Z d Z d S)�ExitNowN)�__name__� __module__� __qualname__r r r r r L s r c C s; y | j � Wn& t k r% � Yn | j � Yn Xd S)N)�handle_read_event�_reraised_exceptions� handle_error)�objr r r �readQ s r c C s; y | j � Wn& t k r% � Yn | j � Yn Xd S)N)�handle_write_eventr r )r r r r �writeY s r" c C s; y | j � Wn& t k r% � Yn | j � Yn Xd S)N)�handle_expt_eventr r )r r r r � _exceptiona s r$ 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 Wnt t k r� } z/ | j d t k r� | j � n | j � WYd d } ~ Xn& t k r� � Yn | j � Yn Xd S)Nr )�select�POLLINr �POLLOUTr! �POLLPRIr# ZPOLLHUPZPOLLERRZPOLLNVAL� handle_close�OSError�args� _DISCONNECTEDr r )r �flags�er r r � readwritei s" r/ g c C s� | d k r t } n | r�g } g } g } x� t | j � � D]v \ } } | j � } | j � } | rz | 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 | | | | � \ } } } Wn t k r/d SYn Xx9 | D]1 } | j | � } | d k r^q7n t | � q7Wx9 | D]1 } | j | � } | d k r�qsn t | � qsWx< | D]1 } | j | � } | d k r�q�n t | � q�Wn d S)N)� socket_map�list�items�readable�writable�append� accepting�timeZsleepr% �InterruptedError�getr r" r$ ) �timeout�map�r�wr. �fdr Zis_rZis_wr r r �poll} sJ ' % r? c C sK | d k r t } n | d k r4 t | d � } n t j � } | rGx� t | j � � D]t \ } } d } | j � r� | t j t j BO} n | j � r� | j r� | t j O} n | rY | j | | � qY qY Wy | j | � } Wn t k r� g } Yn XxE | D]: \ } } | j | � } | d k r3qn t | | � qWn d S)Ni� r )r0 �intr% r? r1 r2 r3 r& r( r4 r6 r' �registerr8 r9 r/ )r: r; Zpollsterr> r r- r< r r r �poll2� s. rB g >@Fc C s� | d k r t } n | r3 t t d � r3 t } n t } | d k rb xJ | r^ | | | � qH Wn0 x- | r� | d k r� | | | � | d } qe Wd S)Nr? r � )r0 �hasattrr% rB r? )r: Zuse_pollr; �countZpoll_funr r r �loop� s rF c @ s� e Z d Z d Z d Z d Z d Z d Z d Z e d g � Z d d d d � Z d d � Z e Z d d d � Z d d d � Z e j e j d d � Z d d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d! � Z d" d# � Z d$ d% � Z d& d' � Z d( d) d* � Z! d+ d, � Z" d- d. � Z# d/ d0 � Z$ d1 d2 � Z% d3 d4 � Z& d5 d6 � Z' d7 d8 � Z( d9 d: � Z) d; d< � Z* d= d> � Z+ d? d@ � Z, dA dB � Z- d S)C� dispatcherFN�warningc C s� | d k r t | _ n | | _ d | _ | r� | j d � | j | | � d | _ y | j � | _ Wq� t k r� } z: | j d t t f k r� d | _ n | j | � � WYd d } ~ Xq� Xn d | _ d S)Nr TF)r0 �_map�_fileno� setblocking� set_socket� connectedZ getpeername�addrr* r+ r r � del_channel�socket)�self�sockr; r r r r �__init__� s zdispatcher.__init__c C s� | j j d | j j g } | j r? 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s r� �posixc @ ss e Z d Z d d � Z d d � Z d d � Z d d � Z d d d � Z e Z e Z d d � Z d d � Z d S)� file_wrapperc C s t j | � | _ d S)N)r �dupr> )rQ r> r r r rS f s zfile_wrapper.__init__c C s4 | j d k r& t j d | t � n | j � d S)Nr zunclosed file %r)r> rz r{ �ResourceWarningrs )rQ r r r �__del__i s zfile_wrapper.__del__c G s t j | j | � S)N)r r r> )rQ r+ r r r rr n s zfile_wrapper.recvc G s t j | j | � S)N)r r" r> )rQ r+ r r r rn q s zfile_wrapper.sendNc C s9 | t j k r) | t j k r) | r) d St d � � d S)Nr z-Only asyncore specific behaviour implemented.)rP r` r� �NotImplementedError)rQ �levelZoptnameZbuflenr r r ra t s zfile_wrapper.getsockoptc C s0 | j d k r d St j | j � d | _ d S)Nr rC r� )r> r rs )rQ r r r rs s zfile_wrapper.closec C s | j S)N)r> )rQ r r r r_ � s zfile_wrapper.fileno) r r r rS r� rr rn ra r r" rs r_ r r r r r� a s r� c @ s+ e Z d Z d d d � Z d d � Z d S)�file_dispatcherNc C s� t j | d | � d | _ y | j � } Wn t k r@ Yn X| j | � t j | t j d � } | t j B} t j | t j | � d S)NTr ) rG rS rM r_ ry �set_file�fcntlZF_GETFLr � O_NONBLOCKZF_SETFL)rQ r> r; r- r r r rS � s zfile_dispatcher.__init__c C s/ t | � | _ | j j � | _ | j � d S)N)r� rP r_ rJ r\ )rQ r> r r r r� � s zfile_dispatcher.set_file)r r r rS r� r r r r r� � s r� )/�__doc__r% rP r r7 rz r �errnor r r r r r r r r r r r r r� r, r0 r r � Exceptionr �KeyboardInterrupt� SystemExitr r r" r$ r/ r? 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