Edit File: asyncore.cpython-37.pyc
B � f�N � @ sh d Z ddlZddlZddlZddlZddlZddlZddlmZm Z m Z m Z m Z m Z mZmZmZmZmZmZmZ ee e eeeeh�Zye W n ek r� i ZY nX dd� ZG dd� de�Zee e fZ dd � Z d d � Z d d � Z!dd� Z"d&dd�Z#d'dd�Z$e$Z%d(dd�Z&G dd� d�Z'G dd � d e'�Z(d d � Z)d)d d �Z*ej+d!k�rdG d"d#� d#�Z,G d$d%� d%e'�Z-dS )*a� Basic infrastructure for asynchronous socket service clients and servers. There are only two ways to have a program on a single processor do "more than one thing at a time". Multi-threaded programming is the simplest and most popular way to do it, but there is another very different technique, that lets you have nearly all the advantages of multi-threading, without actually using multiple threads. it's really only practical if your program is largely I/O bound. If your program is CPU bound, then pre-emptive scheduled threads are probably what you really need. Network servers are rarely CPU-bound, however. If your operating system supports the select() system call in its I/O library (and nearly all do), then you can use it to juggle multiple communication channels at once; doing other work while your I/O is taking place in the "background." Although this strategy can seem strange and complex, especially at first, it is in many ways easier to understand and control than multi-threaded programming. The module documented here solves many of the difficult problems for you, making the task of building sophisticated high-performance network servers and clients a snap. � N) �EALREADY� EINPROGRESS� EWOULDBLOCK� ECONNRESET�EINVAL�ENOTCONN� ESHUTDOWN�EISCONN�EBADF� ECONNABORTED�EPIPE�EAGAIN� errorcodec C s> y t �| �S tttfk r8 | tkr0t| S d| S X d S )NzUnknown error %s)�os�strerror� ValueError� OverflowError� NameErrorr )�err� r �-/opt/alt/python37/lib64/python3.7/asyncore.py� _strerrorD s r c @ s e Zd ZdS )�ExitNowN)�__name__� __module__� __qualname__r r r r r L s r c C s: y | � � W n( tk r" � Y n | �� Y nX d S )N)�handle_read_event�_reraised_exceptions� handle_error)�objr r r �readQ s r c C s: y | � � W n( tk r" � Y n | �� Y nX d S )N)�handle_write_eventr r )r r r r �writeY s r" c C s: y | � � W n( tk r" � Y n | �� Y nX d S )N)�handle_expt_eventr r )r r r r � _exceptiona s r$ c C s� yX|t j@ r| �� |t j@ r&| �� |t j@ r8| �� |t jt jB t j B @ rV| � � W nh t k r� } z$|j d t kr�| �� n| � � W d d }~X Y n( tk r� � Y n | �� Y nX d S )Nr )�select�POLLINr �POLLOUTr! 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� s z dispatcher.handle_write_eventc C s0 | j �t jt j�}|dkr$| �� n| �� d S )Nr )rQ rb ra r� r) � handle_expt)rR r r r r r# � s z dispatcher.handle_expt_eventc C sX t � \}}}}y t| �}W n dt| � }Y nX | �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_tracebackrY r[ r} r) )rR Znil�t�v�tbinfoZ self_reprr r r r � s zdispatcher.handle_errorc C s | � dd� d S )Nz!unhandled incoming priority eventrI )r} )rR r r r r� � s zdispatcher.handle_exptc C s | � dd� d S )Nzunhandled read eventrI )r} )rR r r r r � s zdispatcher.handle_readc C s | � dd� d S )Nzunhandled write eventrI )r} )rR r r r r� � s zdispatcher.handle_writec C s | � dd� d S )Nzunhandled connect eventrI )r} )rR r r r r� � s zdispatcher.handle_connectc C s | � � }|d k r| j|� d S )N)rl �handle_accepted)rR Zpairr r r r~ � s zdispatcher.handle_acceptc C s |� � | �dd� d S )Nzunhandled accepted eventrI )rt r} )rR rS rO r r r r� � s zdispatcher.handle_acceptedc C s | � dd� | �� d S )Nzunhandled close eventrI )r} rt )rR r r r r) � s zdispatcher.handle_close)NN)N)N)N)rz )-r r r �debugrN r7 ri �closingrO � frozensetr{ rT r\ �__str__r] rP rQ ZAF_INETZ SOCK_STREAMr_ rM rc r4 r5 rg rh rk rl rn rr rt ry r} r rj r! 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