Your IP : 3.145.97.1
��Yf � @ sd d d l Z d d l Z d d l Z 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 d l m Z d d l m
Z
d d l m Z d d
d d g Z d
Z e j d � Z Gd d � d e � Z d d d d � Z d d � Z d d � Z d d � Z e � Z e j Z e j Z e j Z e j Z d S)� N� )�
connection)�process)� reduction)�semaphore_tracker)�spawn)�util�ensure_running�get_inherited_fds�connect_to_new_process�set_forkserver_preload� �Qc @ sL e Z d Z d d � Z d d � Z d d � Z d d � Z d d
� Z d S) �
ForkServerc C s: d | _ d | _ d | _ t j � | _ d g | _ d S)N�__main__)�_forkserver_address�_forkserver_alive_fd�_inherited_fds� threadingZLock�_lock�_preload_modules)�self� r �?/opt/alt/python35/lib64/python3.5/multiprocessing/forkserver.py�__init__! s
zForkServer.__init__c C s5 t d d � | j D� � s( t d � � | | _ d S)z>Set list of module names to try to load in forkserver process.c s s! | ] } t | � t k Vq d S)N)�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
. s z ForkServer.get_inherited_fdsc C s
| j � t | � d t k r, t d � � t j t j � �� } | j | j � t j � \ } } t j � \ } } | | | j
t j � g } | | 7} zJ y t
j | | � | | f SWn% t j | � t j | � � Yn XWd t j | � t j | � XWd QRXd S)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 �os�piper r Zgetfdr Zsendfds�close)r �fdsZclientZparent_r�child_w�child_rZparent_wZallfdsr r r r 6 s&
z!ForkServer.connect_to_new_processc s� | j ��t j � | j d k r' d Sd d } | j r} d d h � t j d � } t � f d d � | j � D� � } n i } t j t j
� �
} t j d � } | j
| � t j | d
� | j � t j � \ } } z� yy | j � | g } | | j � | | j | f ;} t j � } | g t j � } | d | g 7} t j | | | � }
Wn t j | � � Yn XWd t j | � X| | _ | | _ Wd QRXWd QRXd S) 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.
Nz-from multiprocessing.forkserver import main; zmain(%d, %d, %r, **%r)� main_path�sys_path�ignorec 3 s- | ]# \ } } | � k r | | f Vq d S)Nr )r �x�y)� desired_keysr r r e s z,ForkServer.ensure_running.<locals>.<genexpr>r' i� z-c)r r r r r r Zget_preparation_data�dict�itemsr& r' r Zarbitrary_addressZbindr( �chmodZlistenr) �filenoZget_executabler Z _args_from_interpreter_flagsZspawnv_passfdsr* r ) r �cmd�data�listenerZaddress�alive_rZalive_wZ fds_to_passZexe�args�pidr )r3 r r S s>
(
zForkServer.ensure_runningN)�__name__�
__module__� __qualname__r r r
r r r r r r r s
r c 4 C sH | r� d | k rN | d k rN d t j � _ z t j | � Wd t j � ` Xx1 | D]) } y t | � WqU t k
r} YqU XqU Wt j � t j
t j t j t j
i } d d � | j � D� } t j t j d | ��f} t j � �P} | j � t _ | j | t j � | j | t j � xy� x$ d d � | j � D� }
|
r+Pq+W| |
k rat � | j � d �� } d
} t j � d k r�zP y t | | | | � Wn2 t k
r�t j t j! � � t j" j# � Yn XWd t j$ | � XWd QRXWq%t% k
r1}
z |
j& t& j' k r � WYd d }
~
Xq%Xq%WWd QRXWd QRXd S) zRun forkserver.r NTc S s+ i | ]! \ } } t j | | � | � q Sr )�signal)r �sig�valr r r �
<dictcomp>� s zmain.<locals>.<dictcomp>r7 c S s g | ] \ } } | j � q Sr )Zfileobj)r �keyZeventsr r r �
<listcomp>� s zmain.<locals>.<listcomp>r r )(r Zcurrent_processZ _inheritingr Zimport_main_path�
__import__� ImportErrorr Z _close_stdinrA �SIGCHLD�SIG_IGN�SIGINT�SIG_DFLr5 r& r' � selectorsZDefaultSelectorZ getsockname� _forkserverr �registerZ
EVENT_READZselect�
SystemExitZacceptr( �fork�
_serve_one� Exception�sys�
excepthook�exc_info�stderr�flush�_exit�OSError�errnoZ ECONNABORTED)Z listener_fdr; Zpreloadr. r/ �modname�handlersZ old_handlersr: ZselectorZrfds�s�code�er r r �main� sR
ra c C s� | j � t j | � x* | j � D] \ } } t j | | � q$ Wt j | t d � } | j � | ^ } } t _ } t _ | t
j _ t
| t j � � d t j k r� d d l }
|
j � t j | � } t
| | � d S)Nr �randomr )r* r( r5 rA r Zrecvfdsr$ rN r r r Z_semaphore_trackerZ_fd�write_unsigned�getpidrT �modulesrb Zseedr �_main) r^ r: r; r] rB rC r+ r- r, Zstfdrb r_ r r r rR � s
rR c C sq d } t j } xN t | � | k r_ t j | | t | � � } | sR t d � � | | 7} q Wt j | � d S)N� zunexpected EOFr )�UNSIGNED_STRUCT�sizer# r( �read�EOFErrorZunpack)�fdr9 Zlengthr^ r r r �
read_unsigned� s rm c C sZ t j | � } xD | rU t j | | � } | d k rB t d � � | | d � } q Wd S)Nr zshould not get here)rh Zpackr( �write� RuntimeError)rl �n�msg�nbytesr r r rc � s rc ) r[ r( rM rA r& ZstructrT r � r r r r r r �__all__r$ ZStructrh �objectr ra rR rm rc rN r r
r r r r r r �<module> s6 h= !