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windows_events.cpython-36.pyc
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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. 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F)�_wait_for_handle)r r: r� r r r �wait_for_handle/ s z IocpProactor.wait_for_handlec C s | j |d d�}||_|S )NT)r� rE )r rF Z done_callbackr? r r r rO 7 s zIocpProactor._wait_cancelc s� |d krt j}ntj|d �}tjt�}tj|| j|j |�}|rTt |||| j d�� nt |||| | j d�� � j rv� j d= � fdd�}� |d|f| j|j < � S )Ng @�@)r r c s � j � S )N)r= )ro r� r )rm r r �finish_wait_for_handleR s z=IocpProactor._wait_for_handle.<locals>.finish_wait_for_handler r )r< �INFINITE�math�ceilr r� r[ ZRegisterWaitWithQueuer� r rD r) rH r r� )r r: r� Z _is_cancel�msr r; r� r )rm r r� > s z IocpProactor._wait_for_handlec C s0 || j kr,| j j|� tj|j� | jdd� d S )Nr )r9 r] r r� rt r� )r �objr r r r� ^ s z IocpProactor._register_with_iocpc C s� t || jd�}|jr |jd= |jsjy|d d |�}W n, tk r^ } z|j|� W Y d d }~X n X |j|� ||||f| j|j< |S )N)r r r ) r r) r r r( r. r/ r� r )r r r� �callbackrm r� r� r r r r� h s zIocpProactor._registerc C s | j j|� dS )a Unregister an overlapped object. Call this method when its future has been cancelled. The event can already be signalled (pending in the proactor event queue). It is also safe if the event is never signalled (because it was cancelled). 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