관리-도구
편집 파일: forkserver.cpython-38.pyc
U e5d�0 � @ s� d dl Z d dlZd dlZd dlZd dlZd dlZd dlZd dlZd dlZddl m Z ddl m Z ddl m Z ddl mZ ddl mZ ddl mZ d d d d gZd Ze�d�ZG dd� de�Zddd�Zdd� Zdd� Zdd� Ze� Zej Z ej Z ej Z ej Z dS )� N� )� connection)�process)� reduction)�resource_tracker)�spawn)�util�ensure_running�get_inherited_fds�connect_to_new_process�set_forkserver_preload� �qc @ sD e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd d� Z dS )� ForkServerc C s. d | _ d | _d | _d | _t�� | _dg| _d S )N�__main__)�_forkserver_address�_forkserver_alive_fd�_forkserver_pid�_inherited_fds� threadingZLock�_lock�_preload_modules��self� r �2/usr/lib64/python3.8/multiprocessing/forkserver.py�__init__" s zForkServer.__init__c C s | j � | �� W 5 Q R X d S �N)r �_stop_unlockedr r r r �_stop* s zForkServer._stopc C sV | j d krd S t�| j� d | _t�| j d� d | _ t�| j�sLt�| j� d | _d S )Nr ) r �os�closer �waitpidr � is_abstract_socket_namespacer �unlinkr r r r r / s zForkServer._stop_unlockedc C s& t dd� | jD ��s td��|| _dS )z>Set list of module names to try to load in forkserver process.c s s | ]}t |�tkV qd S r )�type�str)�.0�modr r r � <genexpr>@ s z4ForkServer.set_forkserver_preload.<locals>.<genexpr>z&module_names must be a list of stringsN)�allr � TypeError)r Z modules_namesr r r r > s z!ForkServer.set_forkserver_preloadc C s | j S )z�Return list of fds inherited from parent process. This returns None if the current process was not started by fork server. )r r r r r r D s z ForkServer.get_inherited_fdsc C s� | � � t|�d tkr td��t�tj���}|�| j� t� � \}}t� � \}}||| j t � � g}||7 }zNz&t�||� ||fW W �4W 5 Q R � S t� |� t� |� � Y nX W 5 t� |� t� |� X W 5 Q R X dS )a; Request forkserver to create a child process. Returns a pair of fds (status_r, data_w). The calling process can read the child process's pid and (eventually) its returncode from status_r. The calling process should write to data_w the pickled preparation and process data. � z too many fdsN)r �len�MAXFDS_TO_SEND� ValueError�socket�AF_UNIXZconnectr r �piper r Zgetfdr! r Zsendfds)r �fdsZclientZparent_r�child_w�child_rZparent_wZallfdsr r r r L s( � z!ForkServer.connect_to_new_processc s� | j ��~ t�� | jdk r`t�| jtj�\}}|sBW 5 Q R � dS t�| j� d| _ d| _d| _d}| j r�ddh� t � d�}� fdd�|� � D �}ni }t�tj���}t�d�}|�|� t�|�s�t�|d � |�� t�� \}}ztzV|�� |g} ||�� || j |f; }t �� } | gt�� } | d |g7 } t�| | | �}W n t�|� � Y nX W 5 t�|� X || _ || _|| _W 5 Q R X W 5 Q R X dS ) z�Make sure that a fork server is running. This can be called from any process. Note that usually a child process will just reuse the forkserver started by its parent, so ensure_running() will do nothing. NzCfrom multiprocessing.forkserver import main; main(%d, %d, %r, **%r)� main_path�sys_path�ignorec s i | ]\}}|� kr||�qS r r )r' �x�y�Z desired_keysr r � <dictcomp>� s z-ForkServer.ensure_running.<locals>.<dictcomp>r1 i� z-c) r r r r r r" �WNOHANGr! r r r r Zget_preparation_data�itemsr0 r1 r Zarbitrary_addressZbindr r# �chmodZlistenr2 �filenoZget_executableZ _args_from_interpreter_flagsZspawnv_passfds) r �pidZstatus�cmd�data�listenerZaddress�alive_rZalive_wZ fds_to_passZexe�argsr r; r r i sN � zForkServer.ensure_runningN) �__name__� __module__� __qualname__r r r r r r r r r r r r s r c C s� |rdd|kr8|dk r8dt �� _zt�|� W 5 t �� `X |D ]&}z t|� W q< tk r` Y q<X q<t�� t � � \}}t � |d� t � |d� dd� }t j |t jt ji} dd� | �� D �} t �|� i } tjtj| d ���} t�� ���} | �� t_| �| tj� | �|tj� | �|tj� �z�d d � | �� D �}|�r"�qB�q"||k�rjt � |d �d k�sft d��t �||k�r\t � |d� zt � dt j �\}}W n t!k �r� Y �q\Y nX |dk�rq\| �"|d�}|dk �rJt �#|��r�t �$|� }n&t �%|��st d�&||���t �'|�}zt(||� W n t)k �r< Y nX t �*|� nt+�,d| � �q�| |k�r�| �-� d ��,}t.�/|t0d �}t1|�t0k�r�t2d�&t1|����|^}}}|�*� t �3� }|dk�rNd }zpz<| �*� | �*� ||||g}|�5| �6� � t7|||| �}W n. t8k �r: t9j:t9�;� � t9j<�=� Y nX W 5 t �4|� X nNzt(||� W n t)k �rr Y nX || |< t �*|� |D ]}t �*|� �q�W 5 Q R X W n4 t>k �r� } z|j?t?j@k�r̂ W 5 d}~X Y nX �q W 5 Q R X W 5 Q R X dS )zRun forkserver.r NTFc W s d S r r )Z_unusedr r r �sigchld_handler� s z main.<locals>.sigchld_handlerc S s i | ]\}}|t � ||��qS r )�signal)r' �sig�valr r r r< � s � zmain.<locals>.<dictcomp>)r@ c S s g | ]\}}|j �qS r )Zfileobj)r' �keyZeventsr r r � <listcomp>� s zmain.<locals>.<listcomp>r � z Not at EOF?i ���r zChild {0:n} status is {1:n}z.forkserver: waitpid returned unexpected pid %dz Too many ({0:n}) fds to send)Ar Zcurrent_processZ _inheritingr Zimport_main_path� __import__� ImportErrorr Z _close_stdinr r2 � set_blockingrK �SIGCHLD�SIGINT�SIG_IGNr> � set_wakeup_fdr0 r1 � selectorsZDefaultSelectorZ getsockname� _forkserverr �registerZ EVENT_READZselect�read�AssertionError� SystemExitr" r= �ChildProcessError�pop� WIFSIGNALED�WTERMSIG� WIFEXITED�format� WEXITSTATUS� write_signed�BrokenPipeErrorr! �warnings�warnZacceptr Zrecvfdsr. r- � RuntimeError�fork�_exit�extend�values� _serve_one� Exception�sys� excepthook�exc_info�stderr�flush�OSError�errnoZ ECONNABORTED)Z listener_fdrE Zpreloadr6 r7 �modnameZsig_rZsig_wrJ �handlersZ old_handlersZ pid_to_fdrD ZselectorZrfdsrA �stsr4 � returncode�sr3 r5 �code� unused_fds�fd�er r r �main� s� �� � �� � �� � r� c C sh t �d� |�� D ]\}}t � ||� q|D ]}t�|� q,|^t_tj_ t_ t� | �}t � | |�}|S )NrQ )rK rX r> r r! rZ r r Z_resource_trackerZ_fdr �dupr Z_main) r5 r3 r~ ry rL rM r Zparent_sentinelr} r r r ro 1 s � ro c C sN d}t j}t|�|k r@t�| |t|� �}|s6td��||7 }q t �|�d S )NrP zunexpected EOFr )� SIGNED_STRUCT�sizer- r r\ �EOFErrorZunpack)r rC Zlengthr| r r r � read_signedH s r� c C s< t �|�}|r8t�| |�}|dkr*td��||d � }q d S )Nr zshould not get here)r� Zpackr �writerj )r �n�msg�nbytesr r r rf R s rf )NN) rw r rY rK r0 Zstructrq r rh � r r �contextr r r r �__all__r. ZStructr� �objectr r� ro r� rf rZ r r r r r r r r �<module> s> �