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process.cpython-39.pyc
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Return process object representing the parent process )�_parent_processr r r r r 3 s r c C s* t t�D ] } | j�� d urt�| � qd S �N)r r �_popen�poll�discard)�pr r r r = s r c @ s� e Zd ZdZdd� Zddddi fdd�dd�Zd d � Zd d � Zd d� Zdd� Z dd� Z d,dd�Z dd� Z dd� Z edd� �Zejdd� �Zed d � �Zejd d � �Zed d � �Zejd!d � �Zed"d#� �Zed$d%� �ZeZed&d'� �Zd(d)� Zd-d*d+�ZdS ).r z� Process objects represent activity that is run in a separate process The class is analogous to `threading.Thread` c C s t �d S r )�NotImplementedError��selfr r r �_PopenM s zBaseProcess._PopenNr )�daemonc C s� |d u sJ d��t t�}tj|f | _tj�� | _t�� | _tj | _ d | _ d| _ || _ t|�| _t|�| _|p�t| �jd d�dd� | jD �� | _|d ur�|| _t�| � d S )Nz#group argument must be None for nowF�-�:c s s | ]}t |�V qd S r )�str)�.0�ir r r � <genexpr>^ � z'BaseProcess.__init__.<locals>.<genexpr>)�next�_process_counterr � _identity�_config�copy�os�getpid� _parent_pid�name� _parent_namer �_closed�_target�tuple�_args�dict�_kwargs�type�__name__�join�_namer � _dangling�add)r �group�targetr' �args�kwargsr �countr r r �__init__P s" �zBaseProcess.__init__c C s | j rtd��d S )Nzprocess object is closed)r) � ValueErrorr r r r � _check_closedc s zBaseProcess._check_closedc C s | j r| j | ji | j�� dS )zQ Method to be run in sub-process; can be overridden in sub-class N)r* r, r. r r r r �rung s zBaseProcess.runc C sz | � � | jdu sJ d��| jt�� ks0J d��tj�d�rDJ d��t� | � | �| _| jj | _ | ` | ` | `t�| � dS )z% Start child process Nz cannot start a process twicez:can only start a process object created by current processr z3daemonic processes are not allowed to have children)r< r r& r$ r% r r" �getr r �sentinel� _sentinelr* r, r. r r4 r r r r �startn s �� zBaseProcess.startc C s | � � | j�� dS )zT Terminate process; sends SIGTERM signal or uses TerminateProcess() N)r< r � terminater r r r rB � s zBaseProcess.terminatec C s | � � | j�� dS )zT Terminate process; sends SIGKILL signal or uses TerminateProcess() N)r< r �killr r r r rC � s zBaseProcess.killc C sR | � � | jt�� ks J d��| jdus0J d��| j�|�}|durNt�| � dS )z5 Wait until child process terminates z can only join a child processNz can only join a started process)r< r& r$ r% r �waitr r )r �timeout�resr r r r1 � s zBaseProcess.joinc C s` | � � | tu rdS | jt�� ks*J d��| jdu r8dS | j�� }|du rNdS t�| � dS dS )z1 Return whether process is alive Tz can only test a child processNF) r< r r& r$ r% r r r r )r � returncoder r r �is_alive� s zBaseProcess.is_alivec C sH | j dur>| j �� du r td��| j �� d| _ | `t�| � d| _dS )z� Close the Process object. This method releases resources held by the Process object. It is an error to call this method if the child process is still running. Nz^Cannot close a process while it is still running. You should first call join() or terminate().T)r r r; �closer@ r r r) r r r r rI � s zBaseProcess.closec C s | j S r )r2 r r r r r' � s zBaseProcess.namec C s t |t�sJ d��|| _d S )Nzname must be a string)� isinstancer r2 )r r' r r r r' � s c C s | j �dd�S )z4 Return whether process is a daemon r F)r" r> r r r r r � s zBaseProcess.daemonc C s | j du sJ d��|| jd< dS )z1 Set whether process is a daemon Nzprocess has already startedr )r r" )r Zdaemonicr r r r � s c C s | j d S )N�authkey)r" r r r r rK � s zBaseProcess.authkeyc C s t |�| jd< dS )z2 Set authorization key of process rK N)�AuthenticationStringr" )r rK r r r rK � s c C s" | � � | jdu r| jS | j�� S )zM Return exit code of process or `None` if it has yet to stop N)r< r r r r r r �exitcode� s zBaseProcess.exitcodec C s* | � � | tu rt�� S | jo$| jjS dS )zU Return identifier (PID) of process or `None` if it has yet to start N)r< r r$ r% r �pidr r r r �ident� s zBaseProcess.identc C s2 | � � z| jW S ty, td�d�Y n0 dS )z{ Return a file descriptor (Unix) or handle (Windows) suitable for waiting for process termination. zprocess not startedN)r< r@ �AttributeErrorr; r r r r r? � s zBaseProcess.sentinelc C s� d }| t u rd}nL| jr d}n@| jt�� kr2d}n,| jd u rBd}n | j�� }|d urZd}nd}t| �jd| j g}| jd ur�|� d| jj � |� d| j � |� |� |d ur�t � ||�}|� d | � | jr�|� d � d d �|� S ) NZstarted�closed�unknown�initialZstoppedzname=%rzpid=%sz parent=%sz exitcode=%sr z<%s>� )r r) r& r$ r% r r r/ r0 r2 �appendrN �_exitcode_to_namer> r r1 )r rM Zstatus�infor r r �__repr__ s0 zBaseProcess.__repr__c C s� ddl m}m} �z`z�| jd ur,|�| j� t�d�at� a |� � t }| a t | j | j|�atjrnt�� �� z|j�� |�� W ~n~0 |�d� z| �� d}W |�� n |�� 0 W n� t�y } zJ|jd u r�d}n.t |jt �r�|j}nt j � t!|j�d � d}W Y d }~n:d }~0 d}dd l"}t j � d| j# � |�$� Y n0 W t�%� |�d| � |�&� n t�%� |�d| � |�&� 0 |S )N� )�util�contextz child process calling self.run()r � z Process %s: z process exiting with exitcode %d)'� rZ r[ Z _start_methodZ_force_start_method� itertoolsr9 r �setr Z _close_stdinr �_ParentProcessr( r& r � threadingZ_HAVE_THREAD_NATIVE_IDZ main_threadZ_set_native_idZ_finalizer_registry�clearZ_run_after_forkersrW r= Z_exit_function� SystemExit�coderJ �int�sys�stderr�writer � tracebackr' � print_excZ _shutdownZ_flush_std_streams)r Zparent_sentinelrZ r[ Z old_processrM �eri r r r � _bootstrap" sT � � zBaseProcess._bootstrap)N)N)r0 � __module__� __qualname__�__doc__r r: r< r= rA rB rC r1 rH rI �propertyr' �setterr rK rM rO rN r? rX rl r r r r r G sD � r c @ s e Zd Zdd� ZdS )rL c C s, ddl m} |� d u r td��tt| �ffS )NrY )�get_spawning_popenzJPickling an AuthenticationString object is disallowed for security reasons)r[ rr � TypeErrorrL �bytes)r rr r r r � __reduce__X s �z AuthenticationString.__reduce__N)r0 rm rn ru r r r r rL W s rL c @ s6 e Zd Zdd� Zdd� Zedd� �Zd dd �ZeZdS ) r` c C s4 d| _ || _|| _d | _d | _d| _|| _i | _d S )Nr F)r! r2 �_pidr& r r) r@ r" )r r' rN r? r r r r: h s z_ParentProcess.__init__c C s ddl m} || jgdd� S )Nr �rD �rE �Zmultiprocessing.connectionrD r@ )r rD r r r rH r s z_ParentProcess.is_alivec C s | j S r )rv r r r r rO v s z_ParentProcess.identNc C s ddl m} || jg|d� dS )z6 Wait until parent process terminates r rw rx Nry )r rE rD r r r r1 z s z_ParentProcess.join)N) r0 rm rn r: rH rp rO r1 rN r r r r r` f s r` c @ s e Zd Zdd� Zdd� ZdS )� _MainProcessc C s8 d| _ d| _d | _d | _d| _tt�d��dd�| _d S )Nr Z MainProcessF� z/mp)rK Z semprefix) r! r2 r& r r) rL r$ �urandomr" r r r r r: � s �z_MainProcess.__init__c C s d S r r r r r r rI � s z_MainProcess.closeN)r0 rm rn r: rI r r r r rz � s rz rY � ZSIG�_r )$�__all__r$ rf �signalr^ ra Z _weakrefsetr �path�abspath�getcwdZ ORIGINAL_DIR�OSErrorr r r r �objectr rt rL r` rz r r r9 r r_ r rV r �__dict__�itemsr' Zsignumr3 r r r r �<module> s< !