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reduction.cpython-39.pyc
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(target_process is a handle not a pid!)Nr )�_winapi�GetCurrentProcess�DuplicateHandle�DUPLICATE_SAME_ACCESS)�handleZtarget_process� inheritabler4 �current_processr r r r2 G s �r2 c C sN t �t jd| �}z,t �||t �� ddt jt jB �W t �|� S t �|� 0 dS )z5Steal a handle from process identified by source_pid.Fr N)r5 � OpenProcess�PROCESS_DUP_HANDLEr7 r6 r8 �DUPLICATE_CLOSE_SOURCE� CloseHandle)Z source_pidr9 Zsource_process_handler r r r3 S s � � �r3 c C s t |tj|�}| �|� dS �z&Send a handle over a local connection.N)r1 r5 r8 �send)�connr9 �destination_pidZdhr r r r _ s r c C s | � � �� S )�)Receive a handle over a local connection.)�recv�detach)rB r r r r d s r c @ s" e Zd ZdZddd�Zdd� ZdS )r1 z Picklable wrapper for a handle.Nc C sf |d u rt �� }t�tjd|�}z(t�t�� |||dd�| _W t�|� n t�|� 0 || _ || _ d S )NFr ) �os�getpidr5 r< r= r7 r6 �_handler? �_access�_pid)r r9 �access�pid�procr r r r j s �zDupHandle.__init__c C sb | j t�� kr| jS t�tjd| j �}z*t�|| jt�� | j dtj �W t� |� S t� |� 0 dS )z1Get the handle. This should only be called once.FN) rK rG rH rI r5 r< r= r7 r6 rJ r> r? )r rN r r r rF y s � � �zDupHandle.detach)N)r' r( r) r* r rF r r r r r1 h s r1 )�DupFd�sendfds�recvfds�darwinc C sV t � d|�}tt|�d g�}| �|gtjtj|fg� trR| �d�dkrRt d��dS )z,Send an array of fds over an AF_UNIX socket.�i� r � Az%did not receive acknowledgement of fdN) �array�bytes�lenr �socket� SOL_SOCKETr � ACKNOWLEDGErE � RuntimeError)�sock�fds�msgr r r rP � s rP c C s t � d�}|j| }| �dt�|��\}}}}|s:|s:t�z�trJ| �d� t|�dkrft dt|� ��|d \}} } |tj kr�| tj kr�t| �|j dkr�t �|� | � t|�d |d kr�td�t|�|d ���t|�W S W n t tfy� Y n0 t d��d S ) z/Receive an array of fds over an AF_UNIX socket.rS r rU z received %d items of ancdatar rT z Len is {0:n} but msg[0] is {1!r}zInvalid data receivedN)rV �itemsize�recvmsgrY � CMSG_SPACE�EOFErrorr[ rA rX r\ rZ r � ValueError� frombytes�AssertionError�format�list� IndexError) r] �size�a� bytes_sizer_ �ancdata�flags�addr� cmsg_level� cmsg_type� cmsg_datar r r rQ � s: � � ��rQ c C sF t �| �� t jt j�� }t||g� W d � n1 s80 Y dS r@ )rY �fromfd�fileno�AF_UNIX� SOCK_STREAMrP )rB r9 rC �sr r r r � s c C sH t �| �� t jt j�� }t|d�d W d � S 1 s:0 Y dS )rD r r N)rY rs rt ru rv rQ )rB rw r r r r � s c C sF t �� }|dur |�|�| ��S tr:ddlm} |�| �S td��dS )zReturn a wrapper for an fd.Nr )�resource_sharerz&SCM_RIGHTS appears not to be available)r �get_spawning_popenrO �duplicate_for_child�HAVE_SEND_HANDLE� rx rd )�fd� popen_objrx r r r rO � s rO c C s2 | j d u r t| j| jjffS t| j | jjffS d S r )�__self__�getattrr �__func__r' ��mr r r �_reduce_method� s r� c @ s e Zd Zdd� ZdS )�_Cc C s d S r r )r r r r �f� s z_C.fN)r' r( r) r� r r r r r� � s r� c C s t | j| jffS r )r� � __objclass__r' r� r r r �_reduce_method_descriptor� s r� c C s t | j| j| jpi ffS r )�_rebuild_partial�funcr �keywords)�pr r r �_reduce_partial� s r� c C s t j| g|�R i |��S r )� functools�partial)r� r r� r r r r� � s r� c C s ddl m} t|| �ffS )Nr )� DupSocket)rx r� �_rebuild_socket)rw r� r r r �_reduce_socket� s r� c C s | � � S r )rF )Zdsr r r r� � s r� c C s" t | �� �}t|| j| j| jffS r )rO rt r� �familyr �proto)rw �dfr r r r� � s c C s | � � }tj||||d�S )N)rt )rF rY )r� r� r r� r} r r r r� � s c @ sd e Zd ZdZeZeZeZeZeZe j dkr8e Z e Z e Z n eZeZeZeZeZeZeZeZdd� ZdS )�AbstractReducerz�Abstract base class for use in implementing a Reduction class suitable for use in replacing the standard reduction mechanism used in multiprocessing.r c G sN t tt� j�t� t ttj�t� t ttj �t� t t j t � t t j t� d S r )r r r� r� r� rh �appendr� �int�__add__r� r� r� rY r� r r r r r s zAbstractReducer.__init__N)r' r( r) r* r r r r r �sys�platformr3 r2 r1 rP rQ rO r� r� r� r� r� r r r r r r� � s& r� )� metaclass)N)NF).�abcr r+ r� r rG r- rY r� r| r �__all__r� �hasattrr{ �Picklerr r r r5 r2 r3 r r �objectr1 rV r[ rP rQ rO r� r� r r� r� rh r� r� r� r� r� r� r� r� r� r r r r �<module> sj � � � #