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r" r� [ sB �� �z>ProactorEventLoop.start_serving_pipe.<locals>.loop_accept_pipe)N)rg r )r r� r( r! r� r" �start_serving_pipeX s ( z$ProactorEventLoop.start_serving_pipec � s� | � � } t| |||||||f| |d�| ��} z| I d H W n@ ttfyR � Y n* tyz | �� | �� I d H � Y n0 | S )N)�waiterr� )� create_future�_WindowsSubprocessTransport� SystemExit�KeyboardInterrupt� BaseExceptionr{ �_wait) r r� �args�shell�stdin�stdout�stderr�bufsizer� �kwargsr� Ztranspr! r! r" �_make_subprocess_transport� s" ��� z,ProactorEventLoop._make_subprocess_transport)N)N) rA rB rC rD r r� r� r� r� rE r! r! r r" r 5 s 0 �r c @ s� e Zd ZdZd;dd�Zdd� Zdd� Zd d � Zd<d d �Zdd� Z d=dd�Z d>dd�Z d?dd�Z d@dd�Z dAdd�Zdd � Zd d � Zd d � Zd!d"� Zd#d$� 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 rL ) r3 �_resultsrV �CreateIoCompletionPort�INVALID_HANDLE_VALUErt �_iocp�_cacherj rk rI � _unregistered�_stopped_serving)r Z concurrencyr! 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r! r" �recv� s zIocpProactor.recvc C s| | � |� t�t�}z4t|tj�r6|�|�� ||� n|�|�� |� W n t yd | � d� Y S 0 dd� }| � |||�S )Nr c S sT z |� � W S tyN } z,|jtjtjfv r8t|j� �n� W Y d }~n d }~0 0 d S r; r� r� r! r! r" r� � s � z+IocpProactor.recv_into.<locals>.finish_recv) r� rV r� rt r� r� Z WSARecvIntor� Z ReadFileIntor� r� r� )r r� �bufrx r r� r! r! r" � recv_into� s zIocpProactor.recv_intoc C s^ | � |� t�t�}z|�|�� ||� W n tyF | �d� Y S 0 dd� }| �|||�S )N)r� Nc S sT z |� � W S tyN } z,|jtjtjfv r8t|j� �n� W Y d }~n d }~0 0 d S r; r� r� r! r! r" r� � s � z*IocpProactor.recvfrom.<locals>.finish_recv) r� rV r� rt Z WSARecvFromr� r� r� r� r� r! r! r" �recvfrom� s zIocpProactor.recvfromc C s> | � |� t�t�}|�|�� |||� dd� }| �|||�S )Nc S sT z |� � W S tyN } z,|jtjtjfv r8t|j� �n� W Y d }~n d }~0 0 d S r; r� r� r! r! r" � finish_send s � z(IocpProactor.sendto.<locals>.finish_send)r� rV r� rt Z WSASendTor� r� )r r� r� rx r� r r� r! r! r" �sendto s zIocpProactor.sendtoc C sZ | � |� t�t�}t|tj�r4|�|�� ||� n|�|�� |� dd� }| � |||�S )Nc S sT z |� � W S tyN } z,|jtjtjfv r8t|j� �n� W Y d }~n d }~0 0 d S r; r� r� r! r! r" r� s � z&IocpProactor.send.<locals>.finish_send) r� rV r� rt r� r� ZWSASendr� Z WriteFiler� )r r� r� rx 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� �struct�packr� � setsockoptr� � SOL_SOCKETrV ZSO_UPDATE_ACCEPT_CONTEXT� settimeout� gettimeout� getpeername)r� r� r r� �r� �listenerr! r" � finish_accept/ s �z*IocpProactor.accept.<locals>.finish_acceptc � s2 z| I d H W n t jy, |�� � Y n0 d S r; )r r� r{ )r/ r� r! r! r" � accept_coro8 s z(IocpProactor.accept.<locals>.accept_coror ) r� �_get_accept_socket�familyrV r� rt ZAcceptExr� r� r Z ensure_futurer3 )r r� r r� r� r/ �coror! r� r" �accept) s zIocpProactor.acceptc s� � j tjkr4t�� �� |� | j�� }|�d � |S | � � � zt� � �� � j � W nD t y� } z,|j tjkrr� � �� d dkr�� W Y d }~n d }~0 0 t�t�}|�� �� |� � fdd�}| �|� |�S )Nr r c s |� � � �tjtjd� � S rL )r� r� r� r� rV ZSO_UPDATE_CONNECT_CONTEXT�r� r� r �r� r! r" �finish_connect[ s �z,IocpProactor.connect.<locals>.finish_connect)�typer� � SOCK_DGRAMrV Z WSAConnectr� r3 r� r> r� Z BindLocalr� r2 rW �errnoZ WSAEINVAL� getsocknamer� rt Z ConnectExr� )r r� r( rS �er r� r! r� r" �connectE s" zIocpProactor.connectc C sb | � |� t�t�}|d@ }|d? d@ }|�|�� t�|�� �|||dd� dd� }| �|||�S )Nr � r c S sT z |� � W S tyN } z,|jtjtjfv r8t|j� �n� W Y d }~n d }~0 0 d S r; r� r� r! r! r" �finish_sendfilen s � z.IocpProactor.sendfile.<locals>.finish_sendfile) r� rV r� rt Z TransmitFiler� �msvcrtZ get_osfhandler� ) r �sock�file�offset�countr Z offset_lowZ offset_highr� r! r! r" �sendfiled s � zIocpProactor.sendfilec sJ | � � � t�t�}|�� �� �}|r0| �� �S � fdd�}| �|� |�S )Nc s |� � � S r; )r� r� �rz r! r" �finish_accept_pipe� s z4IocpProactor.accept_pipe.<locals>.finish_accept_pipe)r� rV r� rt ZConnectNamedPiper� r� r� )r rz r Z connectedr� r! r� r" r� y s zIocpProactor.accept_pipec � st t }zt�|�}W qjW n2 tyH } z|jtjkr4� W Y d }~n d }~0 0 t|d t�}t� |�I d H qt � |�S )N� ) �CONNECT_PIPE_INIT_DELAYrV Z ConnectPiper2 rW ZERROR_PIPE_BUSY�min�CONNECT_PIPE_MAX_DELAYr �sleepr ru )r r( �delayrJ r5 r! 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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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