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windows_events.cpython-38.pyc
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Nr c s t � j||||d� d | _d S )Nr )r r �_done_callback)r r �eventrH r r r r! r � s z_WaitCancelFuture.__init__c C s t d��d S )Nz'_WaitCancelFuture must not be cancelled)� RuntimeErrorr8 r r r! r0 � s z_WaitCancelFuture.cancelc s$ t � �|� | jd k r | �| � d S r7 )r r; rW r< r r r! r; � s z _WaitCancelFuture.set_resultc s$ t � �|� | jd k r | �| � d S r7 )r r9 rW r: r r r! r9 � s z _WaitCancelFuture.set_exception) r> r? r@ rA r r0 r; r9 rB r r r r! rV � s rV c s6 e Zd Zdd�� fdd� Z� fdd�Zdd� Z� ZS ) �_WaitHandleFutureNr c s< t � j||||d� || _d| _t�d ddd �| _d | _d S )Nr TF)r r � _proactorZ_unregister_proactorrQ Z CreateEvent�_event� _event_fut)r r rG rH �proactorr r r r! r � s z_WaitHandleFuture.__init__c sF | j d k r"t�| j � d | _ d | _| j�| j� d | _t� �|� d S r7 ) r\ rJ � CloseHandler] r[ � _unregisterr r rO rM r r r! rO � s z%_WaitHandleFuture._unregister_wait_cbc C s� | j s d S d| _ | j}d | _zt�|| j� W n` tk r� } zB|jtjkr~d|| d�}| jrh| j|d< | j � |� W Y �d S W 5 d }~X Y nX | j � | j| j �| _d S rP )rF rE rQ ZUnregisterWaitExr\ r1 rR rS r r2 r3 r[ � _wait_cancelrO r] rT r r r! rU � s( � �z"_WaitHandleFuture._unregister_wait)r> r? r@ r rO rU rB r r r r! rZ � s rZ 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, || _ t�� | _d | _d | _| �d�| _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 | �d� }| _ |S )NF)rh rj )r �tmpr r r! �_get_unconnected_pipe s z PipeServer._get_unconnected_pipec C sr | � � r d S tjtjB }|r&|tjO }t�| j|tjtjB tj B tj t j t j tj tj�}t �|�}| j�|� |S r7 )�closedrJ ZPIPE_ACCESS_DUPLEXZFILE_FLAG_OVERLAPPEDZ FILE_FLAG_FIRST_PIPE_INSTANCEZCreateNamedPiperd ZPIPE_TYPE_MESSAGEZPIPE_READMODE_MESSAGEZ PIPE_WAITZPIPE_UNLIMITED_INSTANCESr ZBUFSIZEZNMPWAIT_WAIT_FOREVER�NULL� PipeHandlerg �add)r �first�flags�h�piper r r! rj s( � � z PipeServer._server_pipe_handlec C s | j d kS r7 )rd r8 r r r! rm s zPipeServer.closedc C sR | j d k r| j �� d | _ | jd k rN| jD ] }|�� q*d | _d | _| j�� d S r7 )ri r0 rd rg �closerh �clear)r rt r r r! ru s zPipeServer.closeN) r> r? r@ rA r rl rj rm ru �__del__r r r r! rb � s rb c @ s e Zd ZdZdS )�_WindowsSelectorEventLoopz'Windows version of selector event loop.N)r> r? r@ rA r r r r! rx , s rx c sH e Zd ZdZd � fdd� Z� fdd�Zdd� Zd d � Zdd d �Z� Z S )r z2Windows version of proactor event loop using IOCP.Nc s |d krt � }t� �|� d S r7 )r r r )r r^ r r r! r 3 s zProactorEventLoop.__init__c sf z(| j d kst�| �| j� t� � � W 5 | j d k r`| j j}| j �� |d k rZ| j�|� d | _ X d S r7 ) Z_self_reading_futurer r0 r[ r` �AssertionError� call_soonZ_loop_self_readingr � run_forever�r r r r r! r{ 8 s z ProactorEventLoop.run_foreverc � s8 | j �|�}|I d H }|� }| j||d|id�}||fS )N�addr��extra)r[ � connect_pipe�_make_duplex_pipe_transport)r �protocol_factoryr' �frt �protocol�transr r r! �create_pipe_connectionK s �z(ProactorEventLoop.create_pipe_connectionc � s. t � ��d� ����fdd� ����� �gS )Nc s d }zn| rN| � � }�j�|� ��� r4|�� W d S �� }�j||d� id� ��� }|d krdW d S �j�|�} W n� t k r� } zF|r�|� � dkr��� d||d�� |�� n�j r�t jd|dd� W 5 d }~X Y n2 tjk r� |r�|�� Y nX | �_| ��� d S ) Nr} r~ r zPipe accept failed)r, r- rt z Accept pipe failed on pipe %rT)�exc_info)r= rg �discardrm ru r� rl r[ � accept_piper1 �filenor3 Z_debugr Zwarningr �CancelledErrorri �add_done_callback)r� rt r� r4 �r' �loop_accept_piper� r Zserverr r! r� V sH �� �z>ProactorEventLoop.start_serving_pipe.<locals>.loop_accept_pipe)N)rb rz )r r� r' r r� r! �start_serving_pipeS s ( z$ProactorEventLoop.start_serving_pipec � s� | � � } t| |||||||f| |d�| ��} z| I d H W nD ttfk rT � Y n, tk r~ | �� | �� I d H � Y nX | S )N)�waiterr )� create_future�_WindowsSubprocessTransport� SystemExit�KeyboardInterrupt� BaseExceptionru Z_wait) r r� �args�shell�stdin�stdout�stderr�bufsizer �kwargsr� Ztranspr r r! �_make_subprocess_transport� s* � ��z,ProactorEventLoop._make_subprocess_transport)N)N) r> r? r@ rA r r{ r� r� r� rB r r r r! r 0 s 0 �r c @ s� e Zd ZdZd;dd�Zdd� Zdd� Zd d � Zd<d d �Zdd� Z d=dd�Z d>dd�Z d?dd�Z d@dd�Z dAdd�Zdd � Zd d � Zd d � Zd!d"� Zd#d$� ZdBd%d&�Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zd1d2� ZdCd3d4�Zd5d6� Z d7d8� Z d9d:� Z d S )Dr z#Proactor implementation using IOCP.r c C sD d | _ g | _t�tjtd|�| _i | _t� � | _ g | _ t� � | _ d S rI ) r2 �_resultsrQ �CreateIoCompletionPort�INVALID_HANDLE_VALUErn �_iocp�_cachere rf rF � _unregistered�_stopped_serving)r Z concurrencyr r r! r � s � zIocpProactor.__init__c C s | j d krtd��d S )NzIocpProactor is closed)r� rY r8 r r r! � _check_closed� s zIocpProactor._check_closedc C sF dt | j� dt | j� g}| jd kr0|�d� d| jjd�|�f S )Nzoverlapped#=%sz result#=%srm z<%s %s>� )�lenr� r� r� rL r r> �join)r r) r r r! �__repr__� s � zIocpProactor.__repr__c C s || _ d S r7 )r2 )r r r r r! �set_loop� s zIocpProactor.set_loopNc C s | j s| �|� | j }g | _ |S r7 )r� rK )r �timeoutrk r r r! �select� s zIocpProactor.selectc C s | j �� }|�|� |S r7 )r2 r� r; )r �valuerN r r r! �_result� s zIocpProactor._resultr c C s~ | � |� t�t�}z4t|tj�r6|�|�� ||� n|�|�� |� W n t k rf | � d� Y S X dd� }| � |||�S )N� c S sR z |� � W S tk rL } z$|jtjtjfkr:t|j� �n� W 5 d }~X Y nX d S r7 �� getresultr1 rR rQ ZERROR_NETNAME_DELETEDZERROR_OPERATION_ABORTED�ConnectionResetErrorr� �r� �keyr r4 r r r! � finish_recv� s � z&IocpProactor.recv.<locals>.finish_recv) �_register_with_iocprQ � Overlappedrn � isinstance�socketZWSARecvr� ZReadFile�BrokenPipeErrorr� � _register�r �conn�nbytesrr r r� r r r! �recv� s zIocpProactor.recvc C s~ | � |� t�t�}z4t|tj�r6|�|�� ||� n|�|�� |� W n t k rf | � d� Y S X dd� }| � |||�S )Nr c S sR z |� � W S tk rL } z$|jtjtjfkr:t|j� �n� W 5 d }~X Y nX d S r7 r� r� r r r! r� � s � z+IocpProactor.recv_into.<locals>.finish_recv) r� rQ r� rn r� r� Z WSARecvIntor� Z ReadFileIntor� r� r� )r r� �bufrr r r� r r r! � recv_into� s zIocpProactor.recv_intoc C s` | � |� t�t�}z|�|�� ||� W n tk rH | �d� Y S X dd� }| �|||�S )N)r� Nc S sR z |� � W S tk rL } z$|jtjtjfkr:t|j� �n� W 5 d }~X Y nX d S r7 r� r� r r r! r� � s � z*IocpProactor.recvfrom.<locals>.finish_recv) r� rQ r� rn Z WSARecvFromr� r� r� r� r� r r r! �recvfrom� s zIocpProactor.recvfromc C s> | � |� t�t�}|�|�� |||� dd� }| �|||�S )Nc S sR z |� � W S tk rL } z$|jtjtjfkr:t|j� �n� W 5 d }~X Y nX d S r7 r� r� r r r! � finish_send s � z(IocpProactor.sendto.<locals>.finish_send)r� rQ r� rn Z WSASendTor� r� )r r� r� rr r} r r� r r r! �sendto� s zIocpProactor.sendtoc C sZ | � |� t�t�}t|tj�r4|�|�� ||� n|�|�� |� dd� }| � |||�S )Nc S sR z |� � W S tk rL } z$|jtjtjfkr:t|j� �n� W 5 d }~X Y nX d S r7 r� r� r r r! r� s � z&IocpProactor.send.<locals>.finish_send) r� rQ r� rn r� r� ZWSASendr� Z WriteFiler� )r r� r� rr r r� r r r! �send s zIocpProactor.sendc sv | � �� | ��j�� t�t�}|���� � �� � � �fdd�}dd� }| �|�|�}||� �}t j || j d� |S )Nc sD |� � t�d��� �}� �tjtj|� � � �� � � � � � � fS )Nz@P) r� �structZpackr� � setsockoptr� � SOL_SOCKETrQ ZSO_UPDATE_ACCEPT_CONTEXT� settimeoutZ gettimeoutZ getpeername)r� r� r r� �r� �listenerr r! � finish_accept* s �z*IocpProactor.accept.<locals>.finish_acceptc � s4 z| I d H W n t jk r. |�� � Y nX d S r7 )r r� ru )r. r� r r r! � accept_coro3 s z(IocpProactor.accept.<locals>.accept_coror ) r� �_get_accept_socket�familyrQ r� rn ZAcceptExr� r� r Z ensure_futurer2 )r r� r r� r� r. �coror r� r! �accept$ s zIocpProactor.acceptc s� � j tjkr4t�� �� |� | j�� }|�d � |S | � � � zt� � �� � j � W nB t k r� } z$|j tjkrt� � �� d dkr�� W 5 d }~X Y nX t�t�}|�� �� |� � fdd�}| �|� |�S )Nr r c s |� � � �tjtjd� � S rI )r� r� r� r� rQ ZSO_UPDATE_CONNECT_CONTEXT�r� r� r �r� r r! �finish_connectV s �z,IocpProactor.connect.<locals>.finish_connect)�typer� Z SOCK_DGRAMrQ Z WSAConnectr� r2 r� r; r� Z BindLocalr� r1 rR �errnoZ WSAEINVALZ getsocknamer� rn Z ConnectExr� )r r� r' rN �er r� r r� r! �connect@ s" zIocpProactor.connectc C sb | � |� t�t�}|d@ }|d? d@ }|�|�� t�|�� �|||dd� dd� }| �|||�S )Nr � r c S sR z |� � W S tk rL } z$|jtjtjfkr:t|j� �n� W 5 d }~X Y nX d S r7 r� r� r r r! �finish_sendfilei s � z.IocpProactor.sendfile.<locals>.finish_sendfile) r� rQ r� rn Z TransmitFiler� �msvcrtZ get_osfhandler� ) r Zsock�file�offset�countr Z offset_lowZ offset_highr� r r r! �sendfile_ s � zIocpProactor.sendfilec sJ | � � � t�t�}|�� �� �}|r0| �� �S � fdd�}| �|� |�S )Nc s |� � � S r7 )r� r� �rt r r! �finish_accept_pipe s z4IocpProactor.accept_pipe.<locals>.finish_accept_pipe)r� rQ r� rn ZConnectNamedPiper� r� r� )r rt r Z connectedr� r r� r! r� t s zIocpProactor.accept_pipec � sr t }zt�|�}W qhW n0 tk rF } z|jtjkr6� W 5 d }~X Y nX t|d t�}t� |�I d H qt � |�S )N� ) �CONNECT_PIPE_INIT_DELAYrQ Z ConnectPiper1 rR ZERROR_PIPE_BUSY�min�CONNECT_PIPE_MAX_DELAYr �sleepr ro )r r' ZdelayrG r4 r r r! r� � s zIocpProactor.connect_pipec C s | � ||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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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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