o
    fM-                     @   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)self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)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   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&   r0   r   )r   r0   r   r   r   r0   Z   r'   zBaseContext.Eventc                 C       ddl m} |||||  dS )zReturns a barrier objectr   )Barrierr   )r&   r2   r   )r   partiesactiontimeoutr2   r   r   r   r2   _   s   zBaseContext.Barrierr   c                 C   r)   )Returns a queue objectr   )Queuer   )queuesr7   r   )r   maxsizer7   r   r   r   r7   d   r,   zBaseContext.Queuec                 C   r)   )r6   r   )JoinableQueuer   )r8   r:   r   )r   r9   r:   r   r   r   r:   i   r,   zBaseContext.JoinableQueuec                 C   r$   )r6   r   )SimpleQueuer   )r8   r;   r   )r   r;   r   r   r   r;   n   r'   zBaseContext.SimpleQueuer   c                 C   s"   ddl m} ||||||  dS )zReturns a process pool objectr   )Pool)context)poolr<   r   )r   	processesinitializerinitargsmaxtasksperchildr<   r   r   r   r<   s   s   
zBaseContext.Poolc                 G   s   ddl m} ||g|R  S )zReturns a shared objectr   )RawValue)sharedctypesrC   )r   typecode_or_typeargsrC   r   r   r   rC   z   r,   zBaseContext.RawValuec                 C   s   ddl m} |||S )zReturns a shared arrayr   )RawArray)rD   rG   )r   rE   size_or_initializerrG   r   r   r   rG      s   
zBaseContext.RawArray)r+   c                G   s(   ddl m} ||g|R ||  dS )z$Returns a synchronized shared objectr   )Valuer+   r   )rD   rI   r   )r   rE   r+   rF   rI   r   r   r   rI      s   zBaseContext.Valuec                C   r1   )z#Returns a synchronized shared arrayr   )ArrayrJ   )rD   rK   r   )r   rE   rH   r+   rK   r   r   r   rK      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spawnrN   )r   rN   r   r   r   rN      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)utilrS   )r   rS   r   r   r   rS      s   zBaseContext.get_loggerc                 C   r   )z8Turn on logging and add a handler which prints to stderrr   )log_to_stderr)rT   rU   )r   levelrU   r   r   r   rU      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)rR   rZ   )r   
executablerZ   r   r   r   rZ      s   zBaseContext.set_executablec                 C   rY   )zkSet list of module names to try to load in forkserver process.
        This is really just a hint.
        r   )set_forkserver_preloadN)
forkserverr\   )r   module_namesr\   r   r   r   r\      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   
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)ra   r   rc   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   )rl   )r   r   r   r   r   ro         c                 C      d S rd   r   rn   r   r   r   rb      s   zBaseContext._check_available)Trd   )r   )NN)r   )NNr   NF)+r	   r
   r   r   r   r   r   staticmethodr   current_processparent_processactive_childrenr   r   r    r%   r(   r*   r-   r/   r0   r2   r7   r:   r;   r<   rC   rG   rI   rK   rN   rS   rU   rX   rZ   r\   r   rh   rk   propertyro   setterrb   r   r   r   r   r      sT    

















r   c                   @   s(   e Zd ZdZedd Zedd ZdS )ProcessNc                 C   s   t  j| S rd   )_default_contextr   ry   _Popen)process_objr   r   r   r{      s   zProcess._Popenc                   C   s   t  j S rd   )rz   r   ry   _after_forkr   r   r   r   r}      rp   zProcess._after_forkr	   r
   r   _start_methodrs   r{   r}   r   r   r   r   ry      s    
ry   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 rd   )rz   _actual_context)r   r=   r   r   r   __init__   s   
zDefaultContext.__init__Nc                    s,   |d u r| j d u r| j| _ | j S t |S rd   )r   rz   superr   )r   rc   	__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)r   RuntimeErrorr   ri   r   r   r   rk      s   zDefaultContext.set_start_methodc                 C   s"   | j d u r|r	d S | j| _ | j jS rd   )r   rz   re   rf   r   r   r   rh      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 )NrL   rR   darwinforkr]   )rO   rP   r   HAVE_SEND_HANDLEappend)r   methodsr   r   r   get_all_start_methods  s   

z$DefaultContext.get_all_start_methodsrd   rr   )
r	   r
   r   ry   r   r   rk   rh   r   __classcell__r   r   r   r   r      s    

r   rL   c                   @      e Zd ZdZedd ZdS )ForkProcessr   c                 C      ddl m} || S Nr   )Popen)
popen_forkr   r|   r   r   r   r   r{     r#   zForkProcess._PopenNr	   r
   r   r   rs   r{   r   r   r   r   r         r   c                   @   (   e Zd ZdZedd Zedd ZdS )SpawnProcessrR   c                 C   r   r   )popen_spawn_posixr   r   r   r   r   r{     r#   SpawnProcess._Popenc                   C   rq   rd   r   r   r   r   r   r}   "     SpawnProcess._after_forkNr~   r   r   r   r   r         
r   c                   @   r   )ForkServerProcessr]   c                 C   r   r   )popen_forkserverr   r   r   r   r   r{   )  r#   zForkServerProcess._PopenNr   r   r   r   r   r   '  r   r   c                   @      e Zd ZdZeZdS )ForkContextr   N)r	   r
   r   re   r   ry   r   r   r   r   r   .      r   c                   @   r   SpawnContextrR   Nr	   r
   r   re   r   ry   r   r   r   r   r   2  r   r   c                   @   s   e Zd ZdZeZdd ZdS )ForkServerContextr]   c                 C   s   t jstdd S )Nz%forkserver start method not available)r   r   ra   rn   r   r   r   rb   9  s   z"ForkServerContext._check_availableN)r	   r
   r   re   r   ry   rb   r   r   r   r   r   6  s    r   )r   rR   r]   r   rR   r   c                   @   r   )r   rR   c                 C   r   r   )popen_spawn_win32r   r   r   r   r   r{   M  r#   r   c                   C   rq   rd   r   r   r   r   r   r}   R  r   r   Nr~   r   r   r   r   r   K  r   c                   @   r   r   r   r   r   r   r   r   W  r   c                 C   s   t |  t_d S rd   )r_   rz   r   )rc   r   r   r   _force_start_methodd  s   r   c                   C   s   t tdd S )Nspawning_popen)rQ   _tlsr   r   r   r   get_spawning_popenm  s   r   c                 C   s
   | t _d S rd   )r   r   )popenr   r   r   set_spawning_popenp  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   r   typer	   )objr   r   r   assert_spawnings  s   
r   ) r   rO   	threadingrW   r   r   __all__	Exceptionr   r   r   r   objectr   BaseProcessry   r   rP   r   r   r   r   r   r   r_   rz   r   localr   r   r   r   r   r   r   r   <module>   sL     ?

,
