3
\
$ � @ s d dl mZmZ d dlZd dlZd dlZd dlZd dlZd dlZd dl Z ddl
m Z ddddd gZ e j
d
kp�eed �o�eed �o�eejd
�ZG dd� dej�ZejZd5dd �Ze j
d
k�re dddg7 Z d dlZd6dd�Zdd� Zdd� Zdd� ZG dd� de�ZnHe dddg7 Z d dlZe j
d kZ d d� Z d d� Z d d� Zd d� Zd!d� Z d"d#� Z G d$d%� d%�Z!ee"e!� j#�e � d&d'� Z$ee"e%j&�e$� ee"e'j(�e$� d(d)� Z)d*d+� Z*eej+e)� e j
d
k�r�d,d-� Z,d.d/� Z-eeje,� n d0d-� Z,d1d/� Z-eeje,� G d2d3� d3ed4�Z.dS )7� )�ABCMeta�abstractmethodN� )�context� send_handle� recv_handle�ForkingPickler�register�dump�win32ZCMSG_LEN�
SCM_RIGHTS�sendmsgc sJ e Zd ZdZi ZejZ� fdd�Ze dd� �Z
e d dd��Z e j
Z
� ZS )
r z)Pickler subclass used by multiprocessing.c s* t � j|� | jj� | _| jj| j� d S )N)�super�__init__�_copyreg_dispatch_table�copy�dispatch_table�update�_extra_reducers)�self�args)� __class__� �1/usr/lib64/python3.6/multiprocessing/reduction.pyr & s zForkingPickler.__init__c C s || j |< dS )z&Register a reduce function for a type.N)r )�cls�type�reducer r r r + s zForkingPickler.registerNc C s t j� }| ||�j|� |j� S )N)�io�BytesIOr
� getbuffer)r �obj�protocolZbufr r r �dumps0 s zForkingPickler.dumps)N)�__name__�
__module__� __qualname__�__doc__r �copyregr r r � classmethodr r" �pickle�loads�
__classcell__r r )r r r ! s c C s t ||�j| � dS )z3Replacement for pickle.dump() using ForkingPickler.N)r r
)r �filer! r r r r
: s � DupHandle� duplicate� steal_handleFc C s* |dkrt j� }t jt j� | |d|t j�S )z<Duplicate a handle. (target_process is a handle not a pid!)Nr )�_winapi�GetCurrentProcess�DuplicateHandle�DUPLICATE_SAME_ACCESS)�handleZtarget_processZ inheritabler r r r. G s
c C sB t jt jd| �}z t j||t j� ddt jt jB �S t j|� X dS )z5Steal a handle from process identified by source_pid.Fr N)r0 � OpenProcess�PROCESS_DUP_HANDLEr2 r1 r3 �DUPLICATE_CLOSE_SOURCE� CloseHandle)Z
source_pidr4 Zsource_process_handler r r r/ O s
c C s t |tj|�}| j|� dS )z&Send a handle over a local connection.N)r- r0 r3 �send)�connr4 �destination_pidZdhr r r r [ s c C s | j � j� S )z)Receive a handle over a local connection.)�recv�detach)r: r r r r ` s c @ s" e Zd ZdZddd�Zdd� ZdS )r- z Picklable wrapper for a handle.Nc
C s\ |d krt j� }tjtjd|�}z tjtj� |||dd�| _W d tj|� X || _ || _
d S )NFr ) �os�getpidr0 r5 r6 r2 r1 �_handler8 �_access�_pid)r r4 �access�pid�procr r r r f s zDupHandle.__init__c
C sV | j tj� kr| jS tjtjd| j �}z tj|| jtj� | j dtj
�S tj |� X dS )z1Get the handle. This should only be called once.FN) rB r> r? r@ r0 r5 r6 r2 r1 rA r7 r8 )r rE r r r r= u s
zDupHandle.detach)N)r# r$ r% r& r r= r r r r r- d s
�DupFd�sendfds�recvfds�darwinc C sV t j d|�}tt|�d g�}| j|gtjtj|fg� trR| jd�dkrRt d��dS )z,Send an array of fds over an AF_UNIX socket.�i� r � Az%did not receive acknowledgement of fdN)
�array�bytes�lenr
�socket�
SOL_SOCKETr � ACKNOWLEDGEr< � RuntimeError)�sockZfds�msgr r r rG � s
c C s� t j d�}|j| }| jdtj|��\}}}}| r>| r>t�yxtrN| jd� t|�dkrjt dt|� ��|d \}} }
|tj
kr�| tj kr�t|
�|j dkr�t �|j
|
� t|�S W n t tfk
r� Y nX t d��dS )z/Receive an array of fds over an AF_UNIX socket.rJ r rL z received %d items of ancdatar zInvalid data receivedN)rM �itemsizeZrecvmsgrP Z
CMSG_SPACE�EOFErrorrR r9 rO rS rQ r �
ValueErrorZ frombytes�list�
IndexError) rT �size�aZ
bytes_sizerU Zancdata�flagsZaddrZ
cmsg_levelZ cmsg_typeZ cmsg_datar r r rH � s*
c
C s2 t j| j� t jt j��}t||g� W dQ R X dS )z&Send a handle over a local connection.N)rP �fromfd�fileno�AF_UNIX� SOCK_STREAMrG )r: r4 r; �sr r r r � s c
C s0 t j| j� t jt j��}t|d�d S Q R X dS )z)Receive a handle over a local connection.r r N)rP r^ r_ r` ra rH )r: rb r r r r � s c C sF t j� }|dk r |j|j| ��S tr:ddlm} |j| �S td��dS )zReturn a wrapper for an fd.Nr )�resource_sharerz&SCM_RIGHTS appears not to be available)r Zget_spawning_popenrF Zduplicate_for_child�HAVE_SEND_HANDLE� rc rX )�fdZ popen_objrc r r r rF � s
c C s2 | j d kr t| j| jjffS t| j | jjffS d S )N)�__self__�getattrr �__func__r# )�mr r r �_reduce_method� s
rk c @ s e Zd Zdd� ZdS )�_Cc C s d S )Nr )r r r r �f� s z_C.fN)r# r$ r% rm r r r r rl � s rl c C s t | j| jffS )N)rh � __objclass__r# )rj r r r �_reduce_method_descriptor� s ro c C s t | j| j| jpi ffS )N)�_rebuild_partial�funcr �keywords)�pr r r �_reduce_partial� s rt c C s t j| f|�|�S )N)� functools�partial)rq r rr r r r rp � s rp c C s ddl m} t|| �ffS )Nr )� DupSocket)rc rw �_rebuild_socket)rb rw r r r �_reduce_socket� s ry c C s | j � S )N)r= )Zdsr r r rx � s rx c C s" t | j� �}t|| j| j| jffS )N)rF r_ rx �familyr �proto)rb �dfr r r ry � s c C s | j � }tj||||d�S )N)r_ )r= rP )r| rz r r{ rf r r r rx � s c @ sd e Zd ZdZeZeZeZeZeZe j
dkr8e Z e Z e
Z
n eZeZeZeZeZeZeZeZdd� ZdS )�AbstractReducerz�Abstract base class for use in implementing a Reduction class
suitable for use in replacing the standard reduction mechanism
used in multiprocessing.r c G sN t tt� j�t� t ttj�t� t ttj �t� t t
j t � t t
j
t� d S )N)r r rl rm rk rY �appendro �int�__add__ru rv rt rP ry )r r r r r r
s
zAbstractReducer.__init__N)r# r$ r% r& r r r
r r �sys�platformr/ r. r- rG rH rF rk ro rp ry rx r r r r r r} � s&
r} )� metaclass)N)NF)/�abcr r r' ru r r> r) rP r� re r �__all__r� �hasattrrd ZPicklerr r r
r0 r. r/ r r �objectr- rM rR rG rH rF rk rl r rm ro rY r~ r r� rt rp rv ry rx r} r r r r �<module>
sb
#