o
    Hb+                     @   s  d dl Z d dlZd dlZddlmZ ddlmZ dZG dd deZG dd	 d	eZ	G d
d deZ
G dd deZG dd deZG dd dejZG dd deZejdkrG dd dejZG dd dejZG dd dejZG dd deZG dd deZG dd  d eZe e e d!Zejd"kreed# Zn#eed$ ZnG d%d dejZG d&d deZd#e iZeed# Zd'd( Ze Zd)d* Zd+d, Zd-d. ZdS )/    N   )process)	reduction c                   @      e Zd ZdS )ProcessErrorN__name__
__module____qualname__r   r   r   ./usr/lib/python3.10/multiprocessing/context.pyr          r   c                   @   r   )BufferTooShortNr   r   r   r   r   r      r   r   c                   @   r   )TimeoutErrorNr   r   r   r   r   r      r   r   c                   @   r   )AuthenticationErrorNr   r   r   r   r   r      r   r   c                   @   s\  e Zd ZeZeZeZeZeej	Z	eej
Z
eejZdd Zdd ZdCddZdd	 Zd
d ZdDddZdEddZdEddZdd ZdFddZdGddZdGddZdd Z		dHd d!Zd"d# Zd$d% Zdd&d'd(Zdd&d)d*Zd+d, Zd-d. ZdDd/d0Z d1d2 Z!d3d4 Z"d5d6 Z#dDd7d8Z$dId:d;Z%dId<d=Z&e'd>d? Z(e(j)d@d? Z(dAdB Z*dS )JBaseContextc                 C   s   t  }|du rtd|S )z(Returns the number of CPUs in the systemNzcannot determine number of cpus)os	cpu_countNotImplementedError)selfZnumr   r   r   r   )   s   zBaseContext.cpu_countc                 C   s&   ddl m} ||  d}|  |S )zReturns a manager associated with a running server process

        The managers methods such as `Lock()`, `Condition()` and `Queue()`
        can be used to create shared objects.
        r   )SyncManagerctx)Zmanagersr   get_contextstart)r   r   mr   r   r   Manager1   s   zBaseContext.ManagerTc                 C      ddl m} ||S )z1Returns two connection object connected by a piper   )Pipe)
connectionr   )r   Zduplexr   r   r   r   r   <      zBaseContext.Pipec                 C      ddl m} ||  dS )z#Returns a non-recursive lock objectr   )Lockr   )synchronizer"   r   )r   r"   r   r   r   r"   A      zBaseContext.Lockc                 C   r!   )zReturns a recursive lock objectr   )RLockr   )r#   r%   r   )r   r%   r   r   r   r%   F   r$   zBaseContext.RLockNc                 C      ddl m} |||  dS )zReturns a condition objectr   )	Conditionr   )r#   r'   r   )r   lockr'   r   r   r   r'   K      zBaseContext.Conditionr   c                 C   r&   )zReturns a semaphore objectr   )	Semaphorer   )r#   r*   r   )r   valuer*   r   r   r   r*   P   r)   zBaseContext.Semaphorec                 C   r&   )z"Returns a bounded semaphore objectr   )BoundedSemaphorer   )r#   r,   r   )r   r+   r,   r   r   r   r,   U   r)   zBaseContext.BoundedSemaphorec                 C   r!   )zReturns an event objectr   )Eventr   )r#   r-   r   )r   r-   r   r   r   r-   Z   r$   zBaseContext.Eventc                 C       ddl m} |||||  dS )zReturns a barrier objectr   )Barrierr   )r#   r/   r   )r   ZpartiesactionZtimeoutr/   r   r   r   r/   _   s   zBaseContext.Barrierr   c                 C   r&   )Returns a queue objectr   )Queuer   )queuesr2   r   )r   maxsizer2   r   r   r   r2   d   r)   zBaseContext.Queuec                 C   r&   )r1   r   )JoinableQueuer   )r3   r5   r   )r   r4   r5   r   r   r   r5   i   r)   zBaseContext.JoinableQueuec                 C   r!   )r1   r   )SimpleQueuer   )r3   r6   r   )r   r6   r   r   r   r6   n   r$   zBaseContext.SimpleQueuer   c                 C   s"   ddl m} ||||||  dS )zReturns a process pool objectr   )Pool)context)Zpoolr7   r   )r   Z	processesZinitializerZinitargsZmaxtasksperchildr7   r   r   r   r7   s   s   
zBaseContext.Poolc                 G   s   ddl m} ||g|R  S )zReturns a shared objectr   )RawValue)sharedctypesr9   )r   typecode_or_typeargsr9   r   r   r   r9   z   r)   zBaseContext.RawValuec                 C   s   ddl m} |||S )zReturns a shared arrayr   )RawArray)r:   r=   )r   r;   size_or_initializerr=   r   r   r   r=      s   
zBaseContext.RawArray)r(   c                G   s(   ddl m} ||g|R ||  dS )z$Returns a synchronized shared objectr   )Valuer(   r   )r:   r?   r   )r   r;   r(   r<   r?   r   r   r   r?      s   zBaseContext.Valuec                C   r.   )z#Returns a synchronized shared arrayr   )Arrayr@   )r:   rA   r   )r   r;   r>   r(   rA   r   r   r   rA      s   zBaseContext.Arrayc                 C   s4   t jdkrtt ddrddlm} |  dS dS dS )zCheck whether this is a fake forked process in a frozen executable.
        If so then run code specified by commandline and exit.
        win32frozenFr   )freeze_supportN)sysplatformgetattrspawnrD   )r   rD   r   r   r   rD      s   
zBaseContext.freeze_supportc                 C   s   ddl m} | S )zZReturn package logger -- if it does not already exist then
        it is created.
        r   )
get_logger)utilrI   )r   rI   r   r   r   rI      s   zBaseContext.get_loggerc                 C   r   )z8Turn on logging and add a handler which prints to stderrr   )log_to_stderr)rJ   rK   )r   levelrK   r   r   r   rK      r    zBaseContext.log_to_stderrc                 C   s   ddl m} dS )zVInstall support for sending connections and sockets
        between processes
        r   )r   N) r   )r   r   r   r   r   allow_connection_pickling   s   z%BaseContext.allow_connection_picklingc                 C      ddl m} || dS )zSets the path to a python.exe or pythonw.exe binary used to run
        child processes instead of sys.executable when using the 'spawn'
        start method.  Useful for people embedding Python.
        r   )set_executableN)rH   rP   )r   
executablerP   r   r   r   rP      s   zBaseContext.set_executablec                 C   rO   )zkSet list of module names to try to load in forkserver process.
        This is really just a hint.
        r   )set_forkserver_preloadN)
forkserverrR   )r   Zmodule_namesrR   r   r   r   rR      s   z"BaseContext.set_forkserver_preloadc                 C   sB   |d u r| S zt | }W n ty   td| d w |  |S )Nzcannot find context for %r)_concrete_contextsKeyError
ValueError_check_available)r   methodr   r   r   r   r      s   zBaseContext.get_contextFc                 C   s   | j S N)_namer   Z
allow_noner   r   r   get_start_method   s   zBaseContext.get_start_methodc                 C   s   t d)Nz+cannot set start method of concrete context)rV   r   rX   Zforcer   r   r   set_start_method   s   zBaseContext.set_start_methodc                 C   s   t  dS )z_Controls how objects will be reduced to a form that can be
        shared with other processes.r   )globalsgetr   r   r   r   reducer   s   zBaseContext.reducerc                 C   s   |t  d< d S )Nr   )r_   )r   r   r   r   r   rb      s   c                 C   s   d S rY   r   ra   r   r   r   rW      s   zBaseContext._check_available)TrY   )r   )NN)r   )NNr   NF)+r	   r
   r   r   r   r   r   staticmethodr   Zcurrent_processZparent_processZactive_childrenr   r   r   r"   r%   r'   r*   r,   r-   r/   r2   r5   r6   r7   r9   r=   r?   rA   rD   rI   rK   rN   rP   rR   r   r\   r^   propertyrb   setterrW   r   r   r   r   r      sT    

















r   c                   @   s   e Zd ZdZedd ZdS )ProcessNc                 C   s   t  j| S rY   )_default_contextr   rg   _Popen)process_objr   r   r   ri      s   zProcess._Popenr	   r
   r   Z_start_methodrd   ri   r   r   r   r   rg          rg   c                       sF   e Zd ZeZdd Zd fdd	ZdddZdd	d
Zdd Z  Z	S )DefaultContextc                 C   s   || _ d | _d S rY   )rh   _actual_context)r   r8   r   r   r   __init__   s   
zDefaultContext.__init__Nc                    s,   |d u r| j d u r| j| _ | j S t |S rY   )rn   rh   superr   )r   rX   	__class__r   r   r      s
   
zDefaultContext.get_contextFc                 C   s<   | j d ur|std|d u r|rd | _ d S | || _ d S )Nzcontext has already been set)rn   RuntimeErrorr   r]   r   r   r   r^      s   zDefaultContext.set_start_methodc                 C   s"   | j d u r|r	d S | j| _ | j jS rY   )rn   rh   rZ   r[   r   r   r   r\      s
   
zDefaultContext.get_start_methodc                 C   s>   t jdkrdgS t jdkrddgnddg}tjr|d |S )NrB   rH   darwinforkrS   )rE   rF   r   HAVE_SEND_HANDLEappend)r   methodsr   r   r   get_all_start_methods   s   

z$DefaultContext.get_all_start_methodsrY   rc   )
r	   r
   r   rg   ro   r   r^   r\   ry   __classcell__r   r   rq   r   rm      s    

rm   rB   c                   @      e Zd ZdZedd ZdS )ForkProcessru   c                 C      ddl m} || S Nr   )Popen)Z
popen_forkr   rj   r   r   r   r   ri     r    zForkProcess._PopenNrk   r   r   r   r   r|     rl   r|   c                   @   r{   )SpawnProcessrH   c                 C   r}   r~   )Zpopen_spawn_posixr   r   r   r   r   ri     r    SpawnProcess._PopenNrk   r   r   r   r   r     rl   r   c                   @   r{   )ForkServerProcessrS   c                 C   r}   r~   )Zpopen_forkserverr   r   r   r   r   ri      r    zForkServerProcess._PopenNrk   r   r   r   r   r     rl   r   c                   @      e Zd ZdZeZdS )ForkContextru   N)r	   r
   r   rZ   r|   rg   r   r   r   r   r   %      r   c                   @   r   SpawnContextrH   Nr	   r
   r   rZ   r   rg   r   r   r   r   r   )  r   r   c                   @   s   e Zd ZdZeZdd ZdS )ForkServerContextrS   c                 C   s   t jstdd S )Nz%forkserver start method not available)r   rv   rV   ra   r   r   r   rW   0  s   z"ForkServerContext._check_availableN)r	   r
   r   rZ   r   rg   rW   r   r   r   r   r   -  s    r   )ru   rH   rS   rt   rH   ru   c                   @   r{   )r   rH   c                 C   r}   r~   )Zpopen_spawn_win32r   r   r   r   r   ri   D  r    r   Nrk   r   r   r   r   r   B  rl   c                   @   r   r   r   r   r   r   r   r   I  r   c                 C   s   t |  t_d S rY   )rT   rh   rn   )rX   r   r   r   _force_start_methodV  s   r   c                   C   s   t tdd S )Nspawning_popen)rG   _tlsr   r   r   r   get_spawning_popen_  s   r   c                 C   s
   | t _d S rY   )r   r   )popenr   r   r   set_spawning_popenb  s   
r   c                 C   s    t  d u rtdt| j d S )NzF%s objects should only be shared between processes through inheritance)r   rs   typer	   )objr   r   r   assert_spawninge  s   
r   ) r   rE   Z	threadingrM   r   r   __all__	Exceptionr   r   r   r   objectr   ZBaseProcessrg   rm   rF   r|   r   r   r   r   r   rT   rh   r   Zlocalr   r   r   r   r   r   r   r   <module>   sL     ?
,
