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windows_events.cpython-36.opt-1.pyc
3 \�l � @ s� d Z ddlZddlZddlZddlZddlZddlZddlmZ ddlm Z ddlm Z ddlm Z ddlm Z dd lm Z dd lmZ dd lmZ dd lmZ dd lmZ ddddgZdZdZdZdZdZdZG dd� de j�Z G dd� de j�Z G dd � d e �Z G d d � d e �Z G d d � d e �Z!G d!d"� d"e j"�Z#G d#d� de j$�Z%G d$d� d�Z&G d%d&� d&e j'�Z(e#Z)G d'd(� d(ej*�Z+e+Z,dS ))z.Selector and proactor event loops for Windows.� N� )�events)�base_subprocess)�futures)�proactor_events)�selector_events)�tasks)� windows_utils)� _overlapped)� coroutine)�logger�SelectorEventLoop�ProactorEventLoop� IocpProactor�DefaultEventLoopPolicyl �� i� i� g����MbP?g�������?c s^ e Zd ZdZdd�� fdd� Z� fdd�Zdd � Z� fd d �Z� fd d �Z� fdd�Z � Z S )�_OverlappedFuturez�Subclass of Future which represents an overlapped operation. Cancelling it will immediately cancel the overlapped operation. N)�loopc s& t � j|d� | jr | jd= || _d S )N)r r ���)�super�__init__�_source_traceback�_ov)�self�ovr )� __class__� �./usr/lib64/python3.6/asyncio/windows_events.pyr - s z_OverlappedFuture.__init__c s@ t � j� }| jd k r<| jjr dnd}|jdd|| jjf � |S )N�pendingZ completedr zoverlapped=<%s, %#x>)r � _repr_infor r �insert�address)r �info�state)r r r r 3 s z _OverlappedFuture._repr_infoc C sr | j d krd S y| j j� W nJ tk rf } z.d|| d�}| jrJ| j|d< | jj|� W Y d d }~X nX d | _ d S )Nz&Cancelling an overlapped future failed)�message� exception�future�source_traceback)r �cancel�OSErrorr �_loop�call_exception_handler)r �exc�contextr r r �_cancel_overlapped: s z$_OverlappedFuture._cancel_overlappedc s | j � t� j� S )N)r- r r' )r )r r r r' J s z_OverlappedFuture.cancelc s t � j|� | j� d S )N)r � set_exceptionr- )r r$ )r r r r. N s z _OverlappedFuture.set_exceptionc s t � j|� d | _d S )N)r � set_resultr )r �result)r r r r/ R s z _OverlappedFuture.set_result) �__name__� __module__� __qualname__�__doc__r r r- r' r. r/ � __classcell__r r )r r r ' s r c sn e Zd ZdZdd�� fdd� Zdd� Z� fdd �Zd d � Zd d � Z� fdd�Z � fdd�Z � fdd�Z � Z S )�_BaseWaitHandleFuturez2Subclass of Future which represents a wait handle.N)r c s8 t � j|d� | jr | jd= || _|| _|| _d| _d S )N)r r Tr )r r r r �_handle� _wait_handle� _registered)r r �handle� wait_handler )r r r r Z s z _BaseWaitHandleFuture.__init__c C s t j| jd�t jkS )Nr )�_winapiZWaitForSingleObjectr7 Z WAIT_OBJECT_0)r r r r �_pollh s z_BaseWaitHandleFuture._pollc s\ t � j� }|jd| j � | jd k r>| j� r0dnd}|j|� | jd k rX|jd| j � |S )Nz handle=%#xZsignaledZwaitingzwait_handle=%#x)r r �appendr7 r= r8 )r r! r" )r r r r m s z _BaseWaitHandleFuture._repr_infoc C s d | _ d S )N)r )r �futr r r �_unregister_wait_cbw s z)_BaseWaitHandleFuture._unregister_wait_cbc C s� | j s d S d| _ | j}d | _ytj|� W nZ tk r� } z>|jtjkrtd|| d�}| jrd| j|d< | jj |� d S W Y d d }~X nX | j d � d S )NFz$Failed to unregister the wait handle)r# r$ r% r& ) r9 r8 r ZUnregisterWaitr( �winerror�ERROR_IO_PENDINGr r) r* r@ )r r; r+ r, r r r �_unregister_wait| s" z&_BaseWaitHandleFuture._unregister_waitc s | j � t� j� S )N)rC r r' )r )r r r r' � s z _BaseWaitHandleFuture.cancelc s | j � t� j|� d S )N)rC r r. )r r$ )r r r r. � s z#_BaseWaitHandleFuture.set_exceptionc s | j � t� j|� d S )N)rC r r/ )r r0 )r r r r/ � s z _BaseWaitHandleFuture.set_result) r1 r2 r3 r4 r r= r r@ rC r' r. r/ r5 r r )r r r6 W s r6 c sF e Zd ZdZdd�� fdd� Zdd� Z� fdd �Z� fd d �Z� ZS ) �_WaitCancelFuturezoSubclass of Future which represents a wait for the cancellation of a _WaitHandleFuture using an event. N)r c s t � j||||d� d | _d S )N)r )r r �_done_callback)r r �eventr; r )r r r r � s z_WaitCancelFuture.__init__c C s t d��d S )Nz'_WaitCancelFuture must not be cancelled)� RuntimeError)r r r r r' � s z_WaitCancelFuture.cancelc s$ t � j|� | jd k r | j| � d S )N)r r/ rE )r r0 )r r r r/ � s z _WaitCancelFuture.set_resultc s$ t � j|� | jd k r | j| � d S )N)r r. rE )r r$ )r r r r. � s z _WaitCancelFuture.set_exception) r1 r2 r3 r4 r r' r/ r. r5 r r )r r rD � s rD c s6 e Zd Zdd�� fdd� Z� fdd�Zdd� Z� ZS ) �_WaitHandleFutureN)r c s< t � j||||d� || _d| _tjd ddd �| _d | _d S )N)r TF)r r � _proactorZ_unregister_proactorr Z CreateEvent�_event� _event_fut)r r r: r; �proactorr )r r r r � s z_WaitHandleFuture.__init__c sF | j d k r"tj| j � d | _ d | _| jj| j� d | _t� j|� d S )N) rJ r< � CloseHandlerK rI � _unregisterr r r@ )r r? )r r r r@ � s z%_WaitHandleFuture._unregister_wait_cbc C s� | j s d S d| _ | j}d | _ytj|| j� W nZ tk r� } z>|jtjkrxd|| d�}| jrh| j|d< | j j |� d S W Y d d }~X nX | j j | j| j �| _d S )NFz$Failed to unregister the wait handle)r# r$ r% r& )r9 r8 r ZUnregisterWaitExrJ r( rA rB r r) r* rI � _wait_cancelr@ rK )r r; r+ r, r r r rC � s$ z"_WaitHandleFuture._unregister_wait)r1 r2 r3 r r@ rC r5 r r )r r rH � s rH c @ s< e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � ZeZ d S ) � PipeServerzXClass representing a pipe server. This is much like a bound, listening socket. c C s, || _ tj� | _d | _d | _| jd�| _d S )NT)�_address�weakref�WeakSet�_free_instances�_pipe�_accept_pipe_future�_server_pipe_handle)r r r r r r � s zPipeServer.__init__c C s | j | jd� }| _ |S )NF)rU rW )r �tmpr r r �_get_unconnected_pipe� s z PipeServer._get_unconnected_pipec C sr | j � r d S tjtjB }|r&|tjO }tj| j|tjtjB tj B tj t j t j tj tj�}t j|�}| jj|� |S )N)�closedr< ZPIPE_ACCESS_DUPLEXZFILE_FLAG_OVERLAPPEDZ FILE_FLAG_FIRST_PIPE_INSTANCEZCreateNamedPiperQ ZPIPE_TYPE_MESSAGEZPIPE_READMODE_MESSAGEZ PIPE_WAITZPIPE_UNLIMITED_INSTANCESr ZBUFSIZEZNMPWAIT_WAIT_FOREVER�NULL� PipeHandlerT �add)r �first�flags�h�piper r r rW s z PipeServer._server_pipe_handlec C s | j d kS )N)rQ )r r r r rZ s zPipeServer.closedc C sV | j d k r| j j� d | _ | jd k rRx| jD ] }|j� q,W d | _d | _| jj� d S )N)rV r' rQ rT �closerU �clear)r ra r r r rb s zPipeServer.closeN) r1 r2 r3 r4 r rY rW rZ rb �__del__r r r r rP � s rP c @ s e Zd ZdZdd� ZdS )�_WindowsSelectorEventLoopz'Windows version of selector event loop.c C s t j� S )N)r � socketpair)r r r r � _socketpair+ s z%_WindowsSelectorEventLoop._socketpairN)r1 r2 r3 r4 rg r r r r re ( s re c sP e Zd ZdZd � fdd� Zdd� Zedd� �Zed d � �Zedd d ��Z � Z S )r z2Windows version of proactor event loop using IOCP.Nc s |d krt � }t� j|� d S )N)r r r )r rL )r r r r 2 s zProactorEventLoop.__init__c C s t j� S )N)r rf )r r r r rg 7 s z ProactorEventLoop._socketpairc c s8 | j j|�}|E d H }|� }| j||d|id�}||fS )N�addr)�extra)rI � connect_pipe�_make_duplex_pipe_transport)r �protocol_factoryr �fra �protocol�transr r r �create_pipe_connection: s z(ProactorEventLoop.create_pipe_connectionc s. t � ��d� ����fdd� ��j�� �gS )Nc s d }yj| rL| j � }�jj|� �j� r2|j� d S �� }�j||d� id� �j� }|d kr`d S �jj|�} W n� t k r� } zH|r�|j � d kr��j d||d�� |j� n�j r�t jd|dd� W Y d d }~X n2 tjk r� |r�|j� Y nX | �_| j�� d S ) Nrh )ri r zPipe accept failed)r# r$ ra z Accept pipe failed on pipe %rT)�exc_infor )r0 rT �discardrZ rb rk rY rI � accept_piper( �filenor* Z_debugr Zwarningr �CancelledErrorrV �add_done_callback)rm ra rn r+ )r �loop_accept_piperl r �serverr r rw G s< z>ProactorEventLoop.start_serving_pipe.<locals>.loop_accept_pipe)N)rP Z call_soon)r rl r r )r rw rl r rx r �start_serving_pipeC s ( z$ProactorEventLoop.start_serving_pipec k s� | j � } t| |||||||f| |d�| ��} y| E d H W n& tk r` } z | } W Y d d } ~ X nX d } | d k r�| j� | j� E d H | �| S )N)�waiterri )� create_future�_WindowsSubprocessTransport� Exceptionrb Z_wait)r rn �args�shell�stdin�stdout�stderr�bufsizeri �kwargsrz Ztranspr+ �errr r r �_make_subprocess_transportr s z,ProactorEventLoop._make_subprocess_transport)N)N) r1 r2 r3 r4 r rg r rp ry r� r5 r r )r r r / s /c @ s� e Zd ZdZd1dd�Zdd� Zdd� Zd2d d �Zd d � Zd3dd�Z d4dd�Z dd� Z dd� Z dd� Z edd� �Zd5dd �Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd6d)d*�Zd+d,� Zd-d.� Zd/d0� Zd S )7r z#Proactor implementation using IOCP.� �� c C sD d | _ g | _tjtjtd|�| _i | _tj � | _ g | _ tj � | _ d S )Nr ) r) �_resultsr �CreateIoCompletionPort�INVALID_HANDLE_VALUEr[ �_iocp�_cacherR rS r9 � _unregistered�_stopped_serving)r Z concurrencyr r r r � s zIocpProactor.__init__c C s d| j jt| j�t| j�f S )Nz <%s overlapped#=%s result#=%s>)r r1 �lenr� r� )r r r r �__repr__� s zIocpProactor.__repr__c C s || _ d S )N)r) )r r r r r �set_loop� s zIocpProactor.set_loopNc C s | j s| j|� | j }g | _ |S )N)r� r= )r �timeoutrX r r r �select� s zIocpProactor.selectc C s | j j� }|j|� |S )N)r) r{ r/ )r �valuer? r r r �_result� s zIocpProactor._resultr c C sz | j |� tjt�}y4t|tj�r6|j|j� ||� n|j|j� |� W n t k rb | j d�S X dd� }| j |||�S )N� c S sJ y|j � S tk rD } z |jtjkr2t|j� �n� W Y d d }~X nX d S )N)� getresultr( rA r �ERROR_NETNAME_DELETED�ConnectionResetErrorr~ )ro �keyr r+ r r r � finish_recv� s z&IocpProactor.recv.<locals>.finish_recv) �_register_with_iocpr � Overlappedr[ � isinstance�socketZWSARecvrt ZReadFile�BrokenPipeErrorr� � _register)r �conn�nbytesr_ r r� r r r �recv� s zIocpProactor.recvc C sZ | j |� tjt�}t|tj�r4|j|j� ||� n|j|j� |� dd� }| j |||�S )Nc S sJ y|j � S tk rD } z |jtjkr2t|j� �n� W Y d d }~X nX d S )N)r� r( rA r r� r� r~ )ro r� r r+ r r r � finish_send� s z&IocpProactor.send.<locals>.finish_send) r� r r� r[ r� r� ZWSASendrt Z WriteFiler� )r r� �bufr_ r r� r r r �send� s zIocpProactor.sendc sz | j �� | j�j�� tjt�}|j�j� � j� � � �fdd�}tdd� �}| j |�|�}||� �}t j || j d� |S )Nc sD |j � tjd�j� �}� jtjtj|� � j �j � � � � j � fS )Nz@P) r� �structZpackrt � setsockoptr� � SOL_SOCKETr ZSO_UPDATE_ACCEPT_CONTEXT� settimeoutZ gettimeoutZ getpeername)ro r� r r� )r� �listenerr r � finish_accept� s z*IocpProactor.accept.<locals>.finish_acceptc s s4 y| E d H W n t jk r. |j� � Y nX d S )N)r ru rb )r% r� r r r � accept_coro� s z(IocpProactor.accept.<locals>.accept_coro)r ) r� �_get_accept_socket�familyr r� r[ ZAcceptExrt r r� r Z ensure_futurer) )r r� r r� r� r% �coror )r� r� r �accept� s zIocpProactor.acceptc s� | j � � ytj� j� � j� W nB tk rb } z&|jtjkr@� � j � d dkrR� W Y d d }~X nX tj t �}|j � j� |� � fdd�}| j |� |�S )Nr r c s |j � � jtjtjd� � S )Nr )r� r� r� r� r ZSO_UPDATE_CONNECT_CONTEXT)ro r� r )r� r r �finish_connect s z,IocpProactor.connect.<locals>.finish_connect)r� r Z BindLocalrt r� r( rA �errnoZ WSAEINVALZ getsocknamer� r[ Z ConnectExr� )r r� r �er r� r )r� r �connect� s zIocpProactor.connectc sJ | j � � tjt�}|j� j� �}|r0| j� �S � fdd�}| j|� |�S )Nc s |j � � S )N)r� )ro r� r )ra r r �finish_accept_pipe s z4IocpProactor.accept_pipe.<locals>.finish_accept_pipe)r� r r� r[ ZConnectNamedPipert r� r� )r ra r Z connectedr� r )ra r rs s zIocpProactor.accept_pipec c sz t }xjytj|�}P W n0 tk rF } z|jtjkr6� W Y d d }~X nX t|d t�}tj || j d�E d H qW t j |�S )N� )r ) �CONNECT_PIPE_INIT_DELAYr Z ConnectPiper( rA ZERROR_PIPE_BUSY�min�CONNECT_PIPE_MAX_DELAYr Zsleepr) r r\ )r r Zdelayr: r+ r r r rj s zIocpProactor.connect_pipec C s | j ||d�S )z�Wait for a handle. Return a Future object. The result of the future is True if the wait completed, or False if the wait did not complete (on timeout). 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