a
�DOg� � @ s� d dl Z d dlZddlmZmZ ejs.ed��ddlmZ ddlm Z ddlm
Z
ddlmZ d gZG d
d� de
�ZG dd � d e j�ZdS )
� N� )� reduction�set_spawning_popenz,No support for sending fds between processes)�
forkserver)�
popen_fork)�spawn)�util�Popenc @ s e Zd Zdd� Zdd� ZdS )�_DupFdc C s
|| _ d S �N)�ind)�selfr � r �8/usr/lib64/python3.9/multiprocessing/popen_forkserver.py�__init__ s z_DupFd.__init__c C s t �� | j S r )r Zget_inherited_fdsr )r
r r r �detach s z
_DupFd.detachN)�__name__�
__module__�__qualname__r r r r r r r
s r
c sB e Zd ZdZeZ� fdd�Zdd� Zdd� Ze j
fdd �Z� ZS )
r r c s g | _ t� �|� d S r )�_fds�superr )r
�process_obj�� __class__r r r ! s zPopen.__init__c C s | j �|� t| j �d S )Nr )r �append�len)r
�fdr r r �duplicate_for_child% s zPopen.duplicate_for_childc C s� t �|j�}t�� }t| � z$t�||� t�||� W td � n
td � 0 t� | j
�\| _}t�
|�}t�| tj|| jf�| _t|ddd��}|�|�� � W d � n1 s�0 Y t�| j�| _d S )N�wbT)�closefd)r Zget_preparation_data�_name�io�BytesIOr r �dumpr Zconnect_to_new_processr �sentinel�os�dupr �Finalize� close_fds� finalizer�open�write� getbuffer�read_signed�pid)r
r Z prep_data�buf�wZ _parent_w�fr r r �_launch) s
�,z
Popen._launchc C sp | j d u rjddlm} |tjkr$dnd }|| jg|�s:d S zt�| j�| _ W n tt fyh d| _ Y n0 | j S )Nr )�wait� )
�
returncode�multiprocessing.connectionr3 r% �WNOHANGr$ r r- �OSError�EOFError)r
�flagr3 �timeoutr r r �poll= s
z
Popen.poll)
r r r �methodr
�DupFdr r r2 r% r7 r<