← Back
Editing: forkserver.cpython-310.pyc
o 0�in/ � @ 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 g d �Zd Ze�d �ZG d d � d e�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 �A/opt/alt/python310/lib64/python3.10/multiprocessing/forkserver.py�__init__" s zForkServer.__init__c C s4 | j � | �� W d � d S 1 sw Y d S �N)r �_stop_unlockedr r r r �_stop* s "�zForkServer._stopc C sV | j d u rd S t�| j� d | _t�| j d� d | _ t�| j�s&t�| 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 ��std��|| _dS )z>Set list of module names to try to load in forkserver process.c s s � | ] }t |�tu V 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 tkrtd��t�tj��X}|�| j� t� � \}}t� � \}}||| j t � � g}||7 }z,z t �||� ||fW W t�|� t�|� W d � S t�|� t�|� � t�|� t�|� w 1 sqw Y 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 Zsendfdsr! )r �fdsZclientZparent_r�child_w�child_rZparent_wZallfdsr r r r L s0 � � �z!ForkServer.connect_to_new_processc s� | j �� t�� | jdur1t�| jtj�\}}|s" W d � dS t�| j� d| _ d| _d| _d}| j rKddh� t � d�}� fdd�|� � D �}ni }t�tj��s}t�d�}|�|� t�|�sit�|d � |�� t�� \}}z<z+|�� |g} ||�� || j |f; }t �� } | gt�� } | d |g7 } t�| | | �}W n t�|� � W t�|� nt�|� w || _ || _|| _W d � n1 s�w Y W d � dS W d � dS 1 s�w Y 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 | ] \}}|� v r||�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 sZ � � � ��"�zForkServer.ensure_runningN) �__name__� __module__� __qualname__r r r r r r r r r r r r s r c C s� |r4d|v r |dur dt �� _z t�|� W t �� `nt �� `w |D ]}zt|� W q" ty3 Y q"w t�� t � � \}}t � |d� t � |d� dd� }t j |t jt ji} dd� | �� D �} t �|� i } tjtj| d ���y} t�� ��b} | �� t_| �| tj� | �|tj� | �|tj� �z( d d � | �� D �}|r�nq�||v r�t � |d �d ks�J d��t �||v �r t � |d� z t � dt j �\}}W n t y� Y n5w |dkr�n/| �!|d�}|du�rt �"|�}zt#||� W n t$y� Y nw t �%|� nt&�'d| � q�| |v �r�| �(� d ��}t)�*|t+d �}t,|�t+k�r-t-d�.t,|����|^}}}|�%� t �/� }|dk�r�d }z<z | �%� | �%� ||||g}|�0| �1� � t2|||| �}W n t3�yv t4j5t4�6� � t4j7�8� Y nw W t �9|� n,t �9|� w zt#||� W n t$�y� Y nw || |< t �%|� |D ]}t �%|� �q�W d � n 1 �s�w Y W n t:�y� } z|j;t;j<k�r̂ W Y d}~nd}~ww q�1 �s�w Y W d � dS 1 �s�w Y 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 z.forkserver: waitpid returned unexpected pid %dz Too many ({0:n}) fds to send)=r 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� SystemExitr" r= �ChildProcessError�pop�waitstatus_to_exitcode� write_signed�BrokenPipeErrorr! �warnings�warnZacceptr Zrecvfdsr. r- � RuntimeError�format�fork�extend�values� _serve_one� Exception�sys� excepthook�exc_info�stderr�flush�_exit�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� � �� � � � � �� �� ���� � ��& ����8�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 rz ru rL rM r{ Zparent_sentinelry r r r rj + s � rj c C sX d}t j}t|�|k r%t�| |t|� �}|std��||7 }t|�|k s t �|�d S )NrP zunexpected EOFr )� SIGNED_STRUCT�sizer- r r\ �EOFErrorZunpack)r{ rC Zlengthrx r r r � read_signedB s �r� c C sB t �|�}|r t�| |�}|dkrtd��||d � }|sd S d S )Nr zshould not get here)r Zpackr �writere )r{ �n�msg�nbytesr r r ra L s �ra )NN) rs r rY rK r0 Zstructrl r rc � r r �contextr r r r �__all__r. ZStructr �objectr r} rj r� ra rZ r r r r r r r r �<module> s<
Save File
Cancel