o
    4fn/                     @   s   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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 g d	Zd
ZedZG dd deZ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)resource_tracker)spawn)util)ensure_runningget_inherited_fdsconnect_to_new_processset_forkserver_preload   qc                   @   sD   e Zd Zdd Zd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 | _d | _t | _dg| _d S )N__main__)_forkserver_address_forkserver_alive_fd_forkserver_pid_inherited_fds	threadingLock_lock_preload_modulesself r   l/home/ych/rk3568/buildroot/output/rockchip_rk3568_recovery/host/lib/python3.10/multiprocessing/forkserver.py__init__"   s   
zForkServer.__init__c                 C   s4   | j  |   W d    d S 1 sw   Y  d S N)r   _stop_unlockedr   r   r   r   _stop*   s   
"zForkServer._stopc                 C   sV   | j d u rd 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   

zForkServer._stop_unlockedc                 C   s(   	 t dd | jD std|| _d S )Nc                 s   s    | ]	}t |tu V  qd S r   )typestr).0modr   r   r   	<genexpr>@   s    z4ForkServer.set_forkserver_preload.<locals>.<genexpr>z&module_names must be a list of strings)allr   	TypeError)r   Zmodules_namesr   r   r   r   >   s   
z!ForkServer.set_forkserver_preloadc                 C   s   	 | j S r   )r   r   r   r   r   r
   D   s   zForkServer.get_inherited_fdsc              
   C   s   	 |    t|d tkrtdttjX}|| j t	 \}}t	 \}}||| j
t g}||7 }z,zt|| ||fW W t| t| W  d    S    t| t|  t| t| w 1 srw   Y  d S )N   ztoo many fds)r	   lenMAXFDS_TO_SEND
ValueErrorsocketAF_UNIXconnectr   r!   piper   r   Zgetfdr   sendfdsr"   )r   fdsclientparent_rchild_wchild_rparent_wZallfdsr   r   r   r   L   s2   






z!ForkServer.connect_to_new_processc                    s  	 | j  t  | jd ur2t| jtj\}}|s#	 W d    d S t| j d | _	d | _d | _d}| j
rLddh td} fdd| D }ni }ttjs}td}|| t|sjt|d |  t \}}z<z+| |g}	|| || j
|f; }t }
|
gt  }|d	|g7 }t|
||	}W n	   t|  W t| nt| w || _	|| _|| _W d    n1 sw   Y  W d    d S W d    d S 1 sw   Y  d S )
NzCfrom multiprocessing.forkserver import main; main(%d, %d, %r, **%r)	main_pathsys_pathignorec                    s   i | ]\}}| v r||qS r   r   )r(   xyZdesired_keysr   r   
<dictcomp>   s    z-ForkServer.ensure_running.<locals>.<dictcomp>r2   i  z-c)r   r   r	   r   r!   r#   WNOHANGr"   r   r   r   r   Zget_preparation_dataitemsr1   r2   r   arbitrary_addressbindr   r$   chmodlistenr4   filenoZget_executable_args_from_interpreter_flagsspawnv_passfds)r   pidstatuscmddatalisteneraddressalive_rZalive_wZfds_to_passZexeargsr   rA   r   r	   i   s\   
	




"zForkServer.ensure_runningN)
__name__
__module____qualname__r   r    r   r   r
   r   r	   r   r   r   r   r       s    r   c                 C   s  	 |r5d|v r!|d ur!dt  _zt| W t  `nt  `w |D ]}zt| W q# ty4   Y q#w t  t	
 \}}t	|d t	|d dd }tj|tjtji}	dd |	 D }
t| i }tjtj| dk}t T}| t_||tj ||tj ||tj 	 z	 d	d
 | D }|rnq||v rt||v rt	|d 	 zt	dt	j\}}W n	 t y   Y n4w |dkrn.|!|d }|d urt	"|}zt#|| W n	 t$y   Y nw t	%| nt&'d|  q||v r|( d }t)*|t+d }t,|t+kr t-d.t,||^}}}|%  t	/ }|dkrwd}z<z|%  |%  ||||g}|0|1  t2||||
}W n t3yi   t4j5t46   t4j78  Y nw W t	9| n,t	9| w zt#|| W n
 t$y   Y nw |||< t	%| |D ]}t	%| qW d    n	1 sw   Y  W n t:y } z|j;t;j<kr W Y d }~nd }~ww q1 sw   Y  W d    d S 1 sw   Y  d S )Nr   TFc                  W   s   d S r   r   )Z_unusedr   r   r   sigchld_handler   s   zmain.<locals>.sigchld_handlerc                 S   s   i | ]\}}|t  ||qS r   )signal)r(   sigvalr   r   r   rB      s    zmain.<locals>.<dictcomp>)rI   c                 S   s   g | ]\}}|j qS r   )fileobj)r(   keyeventsr   r   r   
<listcomp>   s    zmain.<locals>.<listcomp>i   r   z.forkserver: waitpid returned unexpected pid %dr   zToo many ({0:n}) fds to send)=r   current_processZ_inheritingr   Zimport_main_path
__import__ImportErrorr   _close_stdinr!   r4   set_blockingrX   SIGCHLDSIGINTSIG_IGNrD   set_wakeup_fdr1   r2   	selectorsDefaultSelectorgetsockname_forkserverr   register
EVENT_READselect
SystemExitreadr#   rC   ChildProcessErrorpopwaitstatus_to_exitcodewrite_signedBrokenPipeErrorr"   warningswarnacceptr   recvfdsr/   r.   RuntimeErrorformatforkextendvalues
_serve_one	Exceptionsys
excepthookexc_infostderrflush_exitOSErrorerrnoZECONNABORTED)Zlistener_fdrR   Zpreloadr<   r=   modnameZsig_rZsig_wrW   handlersZold_handlersZ	pid_to_fdrP   selectorZrfdsrL   stsr9   
returncodesr6   r:   code
unused_fdsfder   r   r   main   s   







&8r   c           	      C   sh   t d | D ]
\}}t  || q	|D ]}t| q|^t_tj_	t_
t| }t| |}|S )Nr_   )rX   rh   rD   r!   r"   rl   r   r   _resource_trackerZ_fdr   dupr   Z_main)	r:   r6   r   r   rY   rZ   r   parent_sentinelr   r   r   r   r   +  s   

r   c                 C   sX   d}t j}t||k r%t| |t| }|std||7 }t||k st |d S )N    zunexpected EOFr   )SIGNED_STRUCTsizer.   r!   rq   EOFErrorunpack)r   rO   lengthr   r   r   r   read_signedB  s   r   c                 C   sB   t |}|rt| |}|dkrtd||d  }|sd S d S )Nr   zshould not get here)r   packr!   writer{   )r   nmsgnbytesr   r   r   ru   L  s   
ru   )NN) r   r!   ri   rX   r1   structr   r   rw    r   r   contextr   r   r   r   __all__r/   Structr   objectr   r   r   r   ru   rl   r	   r
   r   r   r   r   r   r   <module>   s<    
 
 

