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  \	                 @   s>   d dl Z d dlZd dlZddlmZ dgZG dd deZdS )    N   )utilPopenc               @   sH   e Zd ZdZdd Zdd ZejfddZdd	d
Z	dd Z
dd ZdS )r   forkc             C   s   t j  d | _| j| d S )N)r   Z_flush_std_streams
returncode_launch)selfprocess_obj r
   2/usr/lib64/python3.6/multiprocessing/popen_fork.py__init__   s    zPopen.__init__c             C   s   |S )Nr
   )r   fdr
   r
   r   duplicate_for_child   s    zPopen.duplicate_for_childc             C   s   | j d krx>ytj| j|\}}W n  tk
rB } zd S d }~X qX P qW || jkrtj|rntj| | _ ntj|s|ttj	|| _ | j S )N)
r   oswaitpidpidOSErrorWIFSIGNALEDWTERMSIG	WIFEXITEDAssertionErrorWEXITSTATUS)r   flagr   stser
   r
   r   poll   s    


z
Popen.pollNc             C   sN   | j d krH|d k	r0ddlm} || jg|s0d S | j|dkrBtjndS | j S )Nr   )waitg        )r   Zmultiprocessing.connectionr   sentinelr   r   WNOHANG)r   timeoutr   r
   r
   r   r   +   s    
z
Popen.waitc             C   s\   | j d krXytj| jtj W n8 tk
r2   Y n& tk
rV   | jddd krR Y nX d S )Ng?)r   )	r   r   killr   signalSIGTERMProcessLookupErrorr   r   )r   r
   r
   r   	terminate5   s    
zPopen.terminatec             C   s   d}t j \}}t j | _| jdkrdz0t j| dtjkrJdd l}|j  |j	 }W d t j
| X n"t j| tj| t j|f || _d S )Nr   r   random)r   piper   r   closesysmodulesr%   Zseed
_bootstrap_exitr   ZFinalizer   )r   r	   codeZparent_rZchild_wr%   r
   r
   r   r   ?   s    




zPopen._launch)N)__name__
__module____qualname__methodr   r   r   r   r   r   r$   r   r
   r
   r
   r   r      s   


)r   r(   r!    r   __all__objectr   r
   r
   r
   r   <module>   s
   