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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$|j d t kr�| �� n| � � W d d }~X Y n( tk r� � Y n | �� Y nX d S )Nr )�select�POLLINr �POLLOUTr! �POLLPRIr# ZPOLLHUPZPOLLERRZPOLLNVAL� handle_close�OSError�args� _DISCONNECTEDr r )r �flags�er r r � readwritei s" r/ � c C sL |d kr t }|�rHg }g }g }x\t|�� �D ]L\}}|�� }|�� }|rR|�|� |rf|jsf|�|� |sn|r,|�|� q,W g | kr�| kr�|kr�n nt�| � d S t � |||| �\}}}x(|D ] }|� |�}|d kr�q�t |� q�W x*|D ]"}|� |�}|d k�r q�t |� q�W x.|D ]&}|� |�}|d k�r:�q t |� �q W d S )N)� socket_map�list�items�readable�writable�append� accepting�timeZsleepr% �getr r" r$ ) �timeout�map�r�wr. �fdr Zis_rZis_wr r r �poll} sD " r? c C s� |d kr t }| d k r t| d �} t�� }|r�x\t|�� �D ]L\}}d}|�� r^|tjtjB O }|� � rv|j sv|tj O }|r:|� ||� q:W |�| �}x.|D ]&\}}|� |�}|d kr�q�t||� q�W d S )Ni� r )r1 �intr% r? r2 r3 r4 r& r( r5 r7 r' �registerr9 r/ )r: r; Zpollsterr> r r- r< r r r �poll2� s( rB � >@Fc C sj |d kr t }|r ttd�r t}nt}|d krBx8|r>|| |� q.W n$x"|rd|dkrd|| |� |d }qDW d S )Nr? r � )r1 �hasattrr% rB r? )r: Zuse_pollr; �countZpoll_funr r r �loop� s rG c @ s6 e Zd ZdZdZdZdZdZdZe dh�Z dAdd�Z dd� Z e Z dBdd �ZdCd d �Zejejfd d �ZdDdd�Zdd� Zdd� Zdd� Zdd� Zdd� Zdd� Zd d � Zd d � Z d d!� Z d"d#� Z d$d%� Z dEd'd(�Z d)d*� Z!d+d,� Z"d-d.� Z#d/d0� Z$d1d2� Z%d3d4� Z&d5d6� Z'd7d8� Z(d9d:� Z)d;d<� Z*d=d>� Z+d?d@� Z,dS )F� dispatcherFN�warningc C s� |d krt | _n|| _d | _|r�|�d� | �||� d| _y|�� | _W q� tk r� } z*|j d t t fkrvd| _n | � |� � W d d }~X Y q�X nd | _ d S )Nr TF)r1 �_map�_fileno� setblocking� set_socket� connectedZ getpeername�addrr* r+ r r � del_channel�socket)�self�sockr; r r r r �__init__� s zdispatcher.__init__c C s� | j jd | j j g}| jr.| jr.|�d� n| jr>|�d� | jd k r�y|�d| j � W n$ tk r� |�t| j�� Y nX dd� |�t | �f S )N�.Z listeningrN z%s:%dz <%s at %#x>� ) � __class__r r r7 rO r6 rN � TypeError�repr�join�id)rR Zstatusr r r �__repr__� s zdispatcher.__repr__c C s |d kr| j }| || j< d S )N)rJ rK )rR r; r r r � add_channel s zdispatcher.add_channelc C s, | j }|d kr| j}||kr"||= d | _ d S )N)rK rJ )rR r; r> r r r rP s zdispatcher.del_channelc C s. ||f| _ t�||�}|�d� | �|� d S )Nr )Zfamily_and_typerQ rL rM )rR Zfamily�typerS r r r � create_socket s zdispatcher.create_socketc C s || _ |�� | _| �|� d S )N)rQ �filenorK r] )rR rS r; r r r rM s zdispatcher.set_socketc C sD y*| j �t jt j| j �t jt j�dB � W n tk r> Y nX d S )NrD )rQ Z setsockopt� SOL_SOCKETZ SO_REUSEADDR� getsockoptr* )rR r r r �set_reuse_addr% s zdispatcher.set_reuse_addrc C s dS )NTr )rR r r r r4 6 s zdispatcher.readablec C s dS )NTr )rR r r r r5 9 s zdispatcher.writablec C s( d| _ tjdkr |dkr d}| j�|�S )NT�nt� )r7 r �namerQ �listen)rR Znumr r r rg @ s zdispatcher.listenc C s || _ | j�|�S )N)rO rQ �bind)rR rO r r r rh F s zdispatcher.bindc C sp d| _ d| _| j�|�}|tttfks8|tkrBtj dkrB|| _ d S |dt fkr^|| _ | � � nt |t| ��d S )NFTrd r )rN � connectingrQ Z connect_exr r r r r rf rO r �handle_connect_eventr* r )rR Zaddressr r r r �connectJ s zdispatcher.connectc C sn y| j �� \}}W nN tk r& d S tk r` } z |jd tttfkrNd S � W d d }~X Y n X ||fS d S )Nr )rQ �acceptrX r* r+ r r r )rR ZconnrO �whyr r r rl X s zdispatcher.acceptc C sf y| j �|�}|S tk r` } z2|jd tkr4dS |jd tkrN| �� dS � W d d }~X Y nX d S )Nr )rQ �sendr* r+ r r, r) )rR �data�resultrm r r r rn f s zdispatcher.sendc C sh y$| j �|�}|s | �� dS |S W n> tk rb } z |jd tkrP| �� dS � W d d }~X Y nX d S )N� r )rQ �recvr) r* r+ r, )rR � buffer_sizero rm r r r rr s s zdispatcher.recvc C sn d| _ d| _d| _| �� | jd k rjy| j�� W n6 tk rh } z|jd tt fkrX� W d d }~X Y nX d S )NFr ) rN r7 ri rP rQ �closer* r+ r r )rR rm r r r rt � s zdispatcher.closec C s t j�dt|� � d S )Nzlog: %s )�sys�stderrr" �str)rR �messager r r �log� s zdispatcher.log�infoc C s || j krtd||f � d S )Nz%s: %s)�ignore_log_types�print)rR rx r^ r r r �log_info� s zdispatcher.log_infoc C s: | j r| �� n&| js.| jr$| �� | �� n| �� d S )N)r7 � handle_acceptrN ri rj � handle_read)rR r r r r � s z dispatcher.handle_read_eventc C s@ | j �t jt j�}|dkr(t|t|���| �� d| _d| _d S )Nr TF) rQ rb ra �SO_ERRORr* r �handle_connectrN ri )rR r r r r rj � s z dispatcher.handle_connect_eventc C s* | j r d S | js | jr | �� | �� d S )N)r7 rN ri rj � handle_write)rR r r r r! � 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! r# r r� r r� r� r~ r� r) r r r r rH � sL rH c @ s6 e Zd Zd dd�Zdd� Zdd� Zdd � Zd d � ZdS ) �dispatcher_with_sendNc C s t �| ||� d| _d S )Nrq )rH rT � out_buffer)rR rS r; r r r rT � s z dispatcher_with_send.__init__c C s. d}t �| | jd d� �}| j|d � | _d S )Nr i )rH rn r� )rR Znum_sentr r r � initiate_send s z"dispatcher_with_send.initiate_sendc C s | � � d S )N)r� )rR r r r r� s z!dispatcher_with_send.handle_writec C s | j pt| j�S )N)rN �lenr� )rR r r r r5 s z dispatcher_with_send.writablec C s0 | j r| �dt|� � | j| | _| �� d S )Nz sending %s)r� r} rY r� r� )rR ro r r r rn s zdispatcher_with_send.send)NN)r r r rT r� r� r5 rn r r r r r� � s r� c C s� t �� \} }}g }|s td��x0|rN|�|jjj|jjjt|j �f� |j }q W ~|d \}}}d� dd� |D ��}|||f| ||fS )Nztraceback does not exist���rV c S s g | ] }d | �qS )z [%s|%s|%s]r )�.0�xr r r � <listcomp>( s z%compact_traceback.<locals>.<listcomp>) ru �exc_info�AssertionErrorr6 �tb_frame�f_code� co_filename�co_namerw � tb_lineno�tb_nextrZ )r� r� �tbr� �fileZfunction�linerz r r r r� s r� c C s� | d kr t } x~t| �� �D ]n}y |�� W q tk rb } z|jd tkrLn|sR� W d d }~X Y q tk rv � Y q |s�� Y qX qW | �� d S )Nr ) r1 r2 �valuesrt r* r+ r r �clear)r; Z ignore_allr� r r r � close_all+ 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 )N)r �dupr> )rR r> r r r rT P s zfile_wrapper.__init__c C s* | j dkr tjd| t| d� | �� d S )Nr zunclosed file %r)�source)r> �warnings�warn�ResourceWarningrt )rR r r r �__del__S s zfile_wrapper.__del__c G s t j| jf|�� S )N)r r r> )rR r+ r r r rr Y s zfile_wrapper.recvc G s t j| jf|�� S )N)r r" r> )rR r+ r r r rn \ s zfile_wrapper.sendNc C s( |t jkr |t jkr |s dS td��d S )Nr z-Only asyncore specific behaviour implemented.)rQ ra r� �NotImplementedError)rR �levelZoptnameZbuflenr r r rb _ s zfile_wrapper.getsockoptc C s( | j dk rd S | j }d| _ t�|� d S )Nr r� )r> r rt )rR r> r r r rt j s zfile_wrapper.closec C s | j S )N)r> )rR r r r r` q s zfile_wrapper.fileno)N) r r r rT r� rr rn rb r r" rt r` r r r r r� K s r� c @ s e Zd Zddd�Zdd� ZdS )�file_dispatcherNc C sP t �| d |� d| _y |�� }W n tk r4 Y nX | �|� t�|d� d S )NTF)rH rT rN r` �AttributeError�set_filer � set_blocking)rR r> r; r r r rT v s zfile_dispatcher.__init__c C s" t |�| _| j�� | _| �� d S )N)r� rQ r` rK r] )rR r> r r r r� � s zfile_dispatcher.set_file)N)r r r rT r� r r r r r� t s r� )r0 N)r0 N)rC FNN)NF).�__doc__r% rQ ru r8 r� r �errnor r r r r r r r r r r r r r� r, r1 r r � Exceptionr �KeyboardInterrupt� SystemExitr r r" r$ r/ r? rB Zpoll3rG rH r� r� r� rf r� r� r r r r �<module>/ sB < ' , )
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