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    XC?h                     @   s   d dl Z d dlZd dlZd dlZd dlZddlmZ ddlmZ ddlm	Z	 dgZ
ejdkrxe
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eZG dd deZe ZejZdS )    N   )process)	reduction)utilstopZwin32	DupSocketc                   @   s   e Zd Zdd Zdd ZdS )r   c                    s(   |    fdd}t| j| _d S )Nc                    s     |}| | d S N)shareZ
send_bytes)connpidr	   Znew_sock D/opt/alt/python39/lib64/python3.9/multiprocessing/resource_sharer.pysend   s    
z DupSocket.__init__.<locals>.send)dup_resource_sharerregisterclose_id)selfZsockr   r   r   r   __init__   s    zDupSocket.__init__c                 C   sB   t | j"}| }t|W  d    S 1 s40    Y  d S r   )r   get_connectionr   Z
recv_bytessocketZ	fromshare)r   r
   r	   r   r   r   detach$   s    zDupSocket.detachN__name__
__module____qualname__r   r   r   r   r   r   r      s   DupFdc                   @   s   e Zd Zdd Zdd ZdS )r   c                    s4   t |  fdd} fdd}t||| _d S )Nc                    s   t |  | d S r   )r   Zsend_handle)r
   r   Znew_fdr   r   r   1   s    zDupFd.__init__.<locals>.sendc                      s   t   d S r   )osr   r   r   r   r   r   3   s    zDupFd.__init__.<locals>.close)r    r   r   r   r   )r   fdr   r   r   r   r   r   /   s    
zDupFd.__init__c                 C   s:   t | j}t|W  d    S 1 s,0    Y  d S r   )r   r   r   r   Zrecv_handle)r   r
   r   r   r   r   7   s    zDupFd.detachNr   r   r   r   r   r   -   s   c                   @   sJ   e Zd Zdd Zdd Zedd Zddd	Zd
d Zdd Z	dd Z
dS )_ResourceSharerc                 C   s:   d| _ i | _t | _d | _d | _d | _t	| t
j d S )Nr   )_key_cache	threadingZLock_lock	_listener_address_threadr   Zregister_after_forkr"   
_afterfork)r   r   r   r   r   ?   s    
z_ResourceSharer.__init__c                 C   sf   | j L | jd u r|   |  jd7  _||f| j| j< | j| jfW  d    S 1 sX0    Y  d S )Nr   )r&   r(   _startr#   r$   )r   r   r   r   r   r   r   H   s    
z_ResourceSharer.registerc                 C   s<   ddl m} | \}}||t jd}||t f |S )Nr   Clientauthkey)
connectionr-   r   current_processr/   r   r    getpid)Zidentr-   addresskeycr   r   r   r   Q   s
    z_ResourceSharer.get_connectionNc                 C   s   ddl m} | j | jd ur|| jt jd}|d  |  | j	
| | j	 rdtd | j  d | _	d | _d | _| j D ]\}\}}|  q| j  W d    n1 s0    Y  d S )Nr   r,   r.   z._ResourceSharer thread did not stop when asked)r0   r-   r&   r(   r   r1   r/   r   r   r)   joinZis_aliver   Zsub_warningr'   r$   itemsclear)r   Ztimeoutr-   r5   r4   r   r   r   r   r   r   Z   s$    




z_ResourceSharer.stopc                 C   s\   | j  D ]\}\}}|  q
| j   | j  | jd urF| j  d | _d | _d | _d S r   )	r$   r7   r8   r&   _at_fork_reinitr'   r   r(   r)   )r   r4   r   r   r   r   r   r*   o   s    



z_ResourceSharer._afterforkc                 C   sX   ddl m} td |t jd| _| jj| _	t
j| jd}d|_|  || _d S )Nr   )Listenerz0starting listener and thread for sending handlesr.   )targetT)r0   r:   r   debugr   r1   r/   r'   r3   r(   r%   ZThread_serveZdaemonstartr)   )r   r:   tr   r   r   r+   z   s    

z_ResourceSharer._startc                 C   s   t tdrttjt  z| j f}| }|d u rJW d    W q|\}}| j	|\}}z||| W |  n|  0 W d    n1 s0    Y  W q   t
 stjt   Y q0 qd S )Npthread_sigmask)hasattrsignalr@   	SIG_BLOCKvalid_signalsr'   ZacceptZrecvr$   popr   Z
is_exitingsys
excepthookexc_info)r   r
   msgr4   Zdestination_pidr   r   r   r   r   r=      s    
2z_ResourceSharer._serve)N)r   r   r   r   r   staticmethodr   r   r*   r+   r=   r   r   r   r   r"   =   s   		

r"   )r    rB   r   rF   r%    r   contextr   r   __all__platformobjectr   r   r"   r   r   r   r   r   r   <module>   s    


\