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Nr c s t � j||||d� d | _d S )Nr )r r �_done_callback)r r �eventrJ r r r r! r � s z_WaitCancelFuture.__init__c C s t d��d S )Nz'_WaitCancelFuture must not be cancelled)� RuntimeErrorrM r r r! r0 � s z_WaitCancelFuture.cancelc s$ t � �|� | jd ur | �| � d S r: )r r= r[ r> r r r! r= � s z _WaitCancelFuture.set_resultc s$ t � �|� | jd ur | �| � d S r: )r r; r[ r< r r r! r; � s z _WaitCancelFuture.set_exception) r@ rA rB rC r r0 r= r; rD r r r r! rZ � s rZ 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_proactorrU Z CreateEvent�_event� _event_fut)r r rI rJ �proactorr r r r! r � s z_WaitHandleFuture.__init__c sF | j d ur"t�| j � d | _ d | _| j�| j� d | _t� �|� d S r: ) r` rL � CloseHandlera r_ � _unregisterr r rS rQ r r r! rS � s z%_WaitHandleFuture._unregister_wait_cbc C s� | j s d S d| _ | j}d | _zt�|| j� W nf ty� } zN|jtjkr�d|| d�}| jrf| j|d< | j � |� W Y d }~d S W Y d }~n d }~0 0 | j � | j| j �| _d S rT )rH rG rU ZUnregisterWaitExr` r1 rV rW r r2 r3 r_ � _wait_cancelrS ra rX r r r! rY � s( � $ �z"_WaitHandleFuture._unregister_wait)r@ rA rB r rS rY rD r r r r! r^ � s r^ c @ s< e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � ZeZ d S ) � PipeServerzXClass representing a pipe server. 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rk �discardrq rz r� rp r_ � accept_piper1 �filenor3 Z_debugr �warningr �CancelledErrorrm �add_done_callback)r� ry r� r4 �r' �loop_accept_piper� r Zserverr r! r� V sB �� �z>ProactorEventLoop.start_serving_pipe.<locals>.loop_accept_pipe)N)rf r~ )r r� r' r r� r! �start_serving_pipeS s ( z$ProactorEventLoop.start_serving_pipec � s� | � � } t| |||||||f| |d�| ��} z| I d H W n@ ttfyR � Y n* tyz | �� | �� I d H � Y n0 | S )N)�waiterr� )� create_future�_WindowsSubprocessTransport� SystemExit�KeyboardInterrupt� BaseExceptionrz �_wait) r r� �args�shell�stdin�stdout�stderr�bufsizer� �kwargsr� Ztranspr r r! �_make_subprocess_transport� s" ��� z,ProactorEventLoop._make_subprocess_transport)N)N) r@ rA rB rC r r r� r� r� rD r r r r! r 0 s 0 �r c @ s� e Zd ZdZd;dd�Zdd� Zdd� Zd d � Zd<d d �Zdd� Z d=dd�Z d>dd�Z d?dd�Z d@dd�Z dAdd�Zdd � Zd d � Zd d � Zd!d"� Zd#d$� 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 rK ) r2 �_resultsrU �CreateIoCompletionPort�INVALID_HANDLE_VALUErs �_iocp�_cacheri rj rH � _unregistered�_stopped_serving)r Z concurrencyr r r! r � s � zIocpProactor.__init__c C s | j d u rtd��d S )NzIocpProactor is closed)r� r] rM r r r! � _check_closed� s zIocpProactor._check_closedc C sF dt | j� dt | j� g}| jd u r0|�d� d| jjd�|�f S )Nzoverlapped#=%sz result#=%srq z<%s %s>� )�lenr� r� r� rP r r@ �join)r r) r r r! �__repr__� s � zIocpProactor.__repr__c C s || _ d S r: )r2 )r r r r r! �set_loop� s zIocpProactor.set_loopNc C s | j s| �|� | j }g | _ |S r: )r� rN )r �timeoutro r r r! �select� s zIocpProactor.selectc C s | j �� }|�|� |S r: )r2 r� r= )r �valuerR r r r! �_result� s zIocpProactor._resultr c C s| | � |� t�t�}z4t|tj�r6|�|�� ||� n|�|�� |� W n t yd | � d� Y S 0 dd� }| � |||�S )N� c S sT z |� � W S tyN } z,|jtjtjfv r8t|j� �n� W Y d }~n d }~0 0 d S r: �� getresultr1 rV rU ZERROR_NETNAME_DELETEDZERROR_OPERATION_ABORTED�ConnectionResetErrorr� �r� �keyr r4 r r r! � finish_recv� s � z&IocpProactor.recv.<locals>.finish_recv) �_register_with_iocprU � Overlappedrs � isinstance�socketZWSARecvr� ZReadFile�BrokenPipeErrorr� � _register�r �conn�nbytesrw r r� r 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� rU r� rs r� r� Z WSARecvIntor� Z ReadFileIntor� r� r� )r r� �bufrw 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� rU r� rs 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� rU r� rs Z WSASendTor� r� )r r� r� rw 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� rU r� rs r� r� ZWSASendr� Z WriteFiler� )r r� r� rw 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_SOCKETrU 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� rz )r. r� r r r! � accept_coro3 s z(IocpProactor.accept.<locals>.accept_coror ) r� �_get_accept_socket�familyrU r� rs 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 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 rK )r� r� r� r� rU ZSO_UPDATE_CONNECT_CONTEXT�r� r� r �r� r r! �finish_connectV s �z,IocpProactor.connect.<locals>.finish_connect)�typer� � SOCK_DGRAMrU Z WSAConnectr� r2 r� r= r� Z BindLocalr� r1 rV �errnoZ WSAEINVAL� getsocknamer� rs Z ConnectExr� )r r� r' rR �er r� r r� r! �connect@ 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_sendfilei s � z.IocpProactor.sendfile.<locals>.finish_sendfile) r� rU r� rs Z TransmitFiler� �msvcrtZ get_osfhandler� ) r �sock�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 r: )r� r� �ry r r! �finish_accept_pipe s z4IocpProactor.accept_pipe.<locals>.finish_accept_pipe)r� rU r� rs ZConnectNamedPiper� r� r� )r ry r Z connectedr� r r� r! r� t 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_DELAYrU Z ConnectPiper1 rV ZERROR_PIPE_BUSY�min�CONNECT_PIPE_MAX_DELAYr �sleepr rt )r r' �delayrI r4 r r r! r� � s zIocpProactor.connect_pipec C s | � ||d�S )z�Wait for a handle. 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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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