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asyncore.cpython-310.pyc
o }5h,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. 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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 < ' * )