B
    18\y                 @   s  d dddg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	Z	ddl
mZ ddl
mZmZ dd	lmZ ejZy$ddlZdd
lmZmZmZmZ W n$ ek
r   ejdkr dZY nX dZdZe ZdZdgZeedrdZedg7 ZejdkrdZedg7 ZefddZ dd Z!dd Z"dd Z#dd Z$G dd dZ%erhG dd de%Z&G dd  d e%Z'G d!d de(Z)dOd"d Z*ejdkrdPd$dZ+n
dQd%dZ+G d&d' d'e(Z,d(d) Z-ejdkrG d*d+ d+e(Z.d,d- Z/d.Z0d/Z1d0Z2d1Z3d2d3 Z4d4d5 Z5G d6d7 d7e(Z6d8d9 Z7d:d; Z8G d<d= d=e)Z9d>d? Z:ejdkrtd@dA Z;ej<ej=hZ>dRdBdZ?n,ddl@Z@ee@dCre@jAZBne@jCZBdSdDdZ?ejdkrdEdF ZDdGdH ZEeFe'eD dIdJ ZGdKdL ZHeFe&eG ndMdF ZDdNdH ZEeFe'eD dS )TClientListenerPipewait    N   )util)AuthenticationErrorBufferTooShort)	reduction)WAIT_OBJECT_0WAIT_ABANDONED_0WAIT_TIMEOUTINFINITEwin32i    g      4@AF_INETAF_UNIXAF_PIPEc             C   s   t  |  S )N)time	monotonic)timeout r   ^/oak/stanford/groups/akundaje/marinovg/programs/Python-3.7.3/Lib/multiprocessing/connection.py_init_timeout;   s    r   c             C   s   t  | kS )N)r   r   )tr   r   r   _check_timeout>   s    r   c             C   sX   | dkrdS | dkr&t jdt dS | dkrLt jdt ttf ddS td	d
S )z?
    Return an arbitrary free address for the given family
    r   )	localhostr   r   z	listener-)prefixdirr   z\\.\pipe\pyc-%d-%d- zunrecognized familyN)	tempfilemktempr   Zget_temp_dirosgetpidnext_mmap_counter
ValueError)familyr   r   r   arbitrary_addressE   s    r'   c             C   sJ   t jdkr| dkrtd|  t jdkrF| dkrFtt| sFtd|  dS )zD
    Checks if the family is valid for the current environment.
    r   r   zFamily %s is not recognized.r   N)sysplatformr%   hasattrsocket)r&   r   r   r   _validate_familyS   s
    
r,   c             C   sJ   t | tkrdS t | tkr*| dr*dS t | tkr:dS td|  dS )z]
    Return the types of the address

    This can be 'AF_INET', 'AF_UNIX', or 'AF_PIPE'
    r   z\\r   r   zaddress type of %r unrecognizedN)typetuplestr
startswithr%   )addressr   r   r   address_type_   s    r2   c               @   s   e Zd ZdZd+ddZdd Zdd Zd	d
 Zdd Zdd Z	e
dd Ze
dd Ze
dd Zdd Zdd Zd,ddZdd Zd-ddZd.d d!Zd"d# Zd/d%d&Zd'd( Zd)d* ZdS )0_ConnectionBaseNTc             C   s>   |  }|dk rtd|s(|s(td|| _|| _|| _d S )Nr   zinvalid handlez6at least one of `readable` and `writable` must be True)	__index__r%   _handle	_readable	_writable)selfhandlereadablewritabler   r   r   __init__u   s    z_ConnectionBase.__init__c             C   s   | j d k	r|   d S )N)r5   _close)r8   r   r   r   __del__   s    
z_ConnectionBase.__del__c             C   s   | j d krtdd S )Nzhandle is closed)r5   OSError)r8   r   r   r   _check_closed   s    
z_ConnectionBase._check_closedc             C   s   | j stdd S )Nzconnection is write-only)r6   r?   )r8   r   r   r   _check_readable   s    z_ConnectionBase._check_readablec             C   s   | j stdd S )Nzconnection is read-only)r7   r?   )r8   r   r   r   _check_writable   s    z_ConnectionBase._check_writablec             C   s"   | j rd| _n|   tdd S )NFzbad message length)r7   r6   closer?   )r8   r   r   r   _bad_message_length   s    z#_ConnectionBase._bad_message_lengthc             C   s
   | j dkS )z True if the connection is closedN)r5   )r8   r   r   r   closed   s    z_ConnectionBase.closedc             C   s   | j S )z"True if the connection is readable)r6   )r8   r   r   r   r:      s    z_ConnectionBase.readablec             C   s   | j S )z"True if the connection is writable)r7   )r8   r   r   r   r;      s    z_ConnectionBase.writablec             C   s   |    | jS )z+File descriptor or handle of the connection)r@   r5   )r8   r   r   r   fileno   s    z_ConnectionBase.filenoc             C   s$   | j dk	r z|   W dd| _ X dS )zClose the connectionN)r5   r=   )r8   r   r   r   rC      s    
z_ConnectionBase.closer   c             C   s   |    |   t|}|jdkr.tt|}t|}|dk rFtd||k rVtd|dkrh|| }n&|dk rztdn|| |krtd| ||||   dS )z,Send the bytes data from a bytes-like objectr   r   zoffset is negativezbuffer length < offsetNzsize is negativezbuffer length < offset + size)r@   rB   
memoryviewitemsizebyteslenr%   _send_bytes)r8   bufoffsetsizemnr   r   r   
send_bytes   s"    


z_ConnectionBase.send_bytesc             C   s$   |    |   | t| dS )zSend a (picklable) objectN)r@   rB   rK   _ForkingPicklerdumps)r8   objr   r   r   send   s    z_ConnectionBase.sendc             C   sJ   |    |   |dk	r(|dk r(td| |}|dkrB|   | S )z7
        Receive bytes data as a bytes object.
        Nr   znegative maxlength)r@   rA   r%   _recv_bytesrD   getvalue)r8   Z	maxlengthrL   r   r   r   
recv_bytes   s    
z_ConnectionBase.recv_bytesc          	   C   s   |    |   t|}|j}|t| }|dk r>tdn||krNtd|  }| }||| k rvt|	 |
d |||| || |   |S Q R X dS )zq
        Receive bytes data into a writeable bytes-like object.
        Return the number of bytes read.
        r   znegative offsetzoffset too largeN)r@   rA   rG   rH   rJ   r%   rV   tellr	   rW   seekreadinto)r8   rL   rM   rO   rH   ZbytesizeresultrN   r   r   r   recv_bytes_into   s"    


z_ConnectionBase.recv_bytes_intoc             C   s&   |    |   |  }t| S )zReceive a (picklable) object)r@   rA   rV   rR   loads	getbuffer)r8   rL   r   r   r   recv   s    z_ConnectionBase.recv        c             C   s   |    |   | |S )z/Whether there is any input available to be read)r@   rA   _poll)r8   r   r   r   r   poll   s    z_ConnectionBase.pollc             C   s   | S )Nr   )r8   r   r   r   	__enter__  s    z_ConnectionBase.__enter__c             C   s   |    d S )N)rC   )r8   exc_type	exc_valueexc_tbr   r   r   __exit__  s    z_ConnectionBase.__exit__)TT)r   N)N)r   )ra   )__name__
__module____qualname__r5   r<   r>   r@   rA   rB   rD   propertyrE   r:   r;   rF   rC   rQ   rU   rX   r]   r`   rc   rd   rh   r   r   r   r   r3   r   s(   




r3   c               @   sD   e Zd ZdZdZejfddZdd Zddd	Z	d
d Z
dd ZdS )PipeConnectionz
        Connection class based on a Windows named pipe.
        Overlapped I/O is used, so the handles must have been created
        with FILE_FLAG_OVERLAPPED.
        Fc             C   s   || j  d S )N)r5   )r8   Z_CloseHandler   r   r   r=     s    zPipeConnection._closec          	   C   s   t j| j|dd\}}zHy,|t jkrBt |jgdt}|tksBtW n   |	   Y nX W d |
d\}}X |dks|t|t|kstd S )NT)
overlappedFr   )_winapiZ	WriteFiler5   ERROR_IO_PENDINGWaitForMultipleObjectseventr   r   AssertionErrorcancelGetOverlappedResultrJ   )r8   rL   overrwaitresZnwrittenr   r   r   rK     s    
zPipeConnection._send_bytesNc       	   
   C   s  | j rd| _ t S |d kr dnt|d}ytj| j|dd\}}zHy,|tjkrnt|j	gdt
}|tksntW n   |   Y nX W d |d\}}|dkrt }||  |S |tjkr| ||S X W n: tk
r } z|jtjk rtn W d d }~X Y nX tdd S )NF   T)rn   r   z.shouldn't get here; expected KeyboardInterrupt)_got_empty_messageioBytesIOminro   ReadFiler5   rp   rq   rr   r   r   rs   rt   ru   writer_   ZERROR_MORE_DATA_get_more_datar?   winerrorERROR_BROKEN_PIPEEOFErrorRuntimeError)	r8   maxsizeZbsizerv   rw   rx   Znreadfer   r   r   rV   &  s6    


zPipeConnection._recv_bytesc             C   s.   | j st| jd dkrdS tt| g|S )Nr   T)rz   ro   PeekNamedPiper5   boolr   )r8   r   r   r   r   rb   F  s    zPipeConnection._pollc             C   s   |  }t }|| t| jd }|dks6t|d k	rVt|| |krV| 	  tj
| j|dd\}}|d\}}|dkst||kst||   |S )Nr   r   T)rn   )r_   r{   r|   r   ro   r   r5   rs   rJ   rD   r~   ru   )r8   rv   r   rL   r   leftrw   Zrbytesr   r   r   r   L  s    
zPipeConnection._get_more_data)N)ri   rj   rk   __doc__rz   ro   CloseHandler=   rK   rV   rb   r   r   r   r   r   rm     s   
 rm   c               @   s|   e Zd ZdZer,ejfddZejZ	ej
ZnejfddZejZ	ejZe	fddZefddZd	d
 ZdddZdd ZdS )
Connectionzo
    Connection class based on an arbitrary file descriptor (Unix only), or
    a socket handle (Windows).
    c             C   s   || j  d S )N)r5   )r8   r=   r   r   r   r=   c  s    zConnection._closec             C   s   || j  d S )N)r5   )r8   r=   r   r   r   r=   h  s    c             C   s<   t |}x.|| j|}||8 }|dkr(P ||d  }q
W d S )Nr   )rJ   r5   )r8   rL   r   	remainingrP   r   r   r   _sendm  s    zConnection._sendc             C   sf   t  }| j}|}xN|dkr`|||}t|}|dkrL||krDtntd|| ||8 }qW |S )Nr   zgot end of file during message)r{   r|   r5   rJ   r   r?   r   )r8   rN   readrL   r9   r   chunkrP   r   r   r   _recvv  s    


zConnection._recvc             C   sD   t |}td|}|dkr2| | | | n| ||  d S )Nz!ii @  )rJ   structpackr   )r8   rL   rP   headerr   r   r   rK     s    
zConnection._send_bytesNc             C   s:   |  d}td| \}|d k	r0||kr0d S |  |S )N   z!i)r   r   unpackrW   )r8   r   rL   rN   r   r   r   rV     s
    
zConnection._recv_bytesc             C   s   t | g|}t|S )N)r   r   )r8   r   rr   r   r   rb     s    zConnection._poll)N)ri   rj   rk   r   ro   _multiprocessingZclosesocketr=   rU   _writer`   _readr!   rC   r   r   r   r   rK   rV   rb   r   r   r   r   r   \  s   	
r   c               @   sR   e Zd ZdZdddZdd Zdd	 Zed
d Zedd Z	dd Z
dd ZdS )r   z
    Returns a listener object.

    This is a wrapper for a bound socket which is 'listening' for
    connections, or for a Windows named pipe.
    Nr   c             C   sp   |p|rt |pt}|pt|}t| |dkr>t||| _nt|||| _|d k	rft|tsft	d|| _
d S )Nr   zauthkey should be a byte string)r2   default_familyr'   r,   PipeListener	_listenerSocketListener
isinstancerI   	TypeError_authkey)r8   r1   r&   backlogauthkeyr   r   r   r<     s    zListener.__init__c             C   s>   | j dkrtd| j  }| jr:t|| j t|| j |S )zz
        Accept a connection on the bound socket or named pipe of `self`.

        Returns a `Connection` object.
        Nzlistener is closed)r   r?   acceptr   deliver_challengeanswer_challenge)r8   cr   r   r   r     s    

zListener.acceptc             C   s    | j }|dk	rd| _ |  dS )zA
        Close the bound socket or named pipe of `self`.
        N)r   rC   )r8   Zlistenerr   r   r   rC     s    zListener.closec             C   s   | j jS )N)r   _address)r8   r   r   r   r1     s    zListener.addressc             C   s   | j jS )N)r   _last_accepted)r8   r   r   r   last_accepted  s    zListener.last_acceptedc             C   s   | S )Nr   )r8   r   r   r   rd     s    zListener.__enter__c             C   s   |    d S )N)rC   )r8   re   rf   rg   r   r   r   rh     s    zListener.__exit__)NNr   N)ri   rj   rk   r   r<   r   rC   rl   r1   r   rd   rh   r   r   r   r   r     s   
	c             C   sh   |p
t | }t| |dkr&t| }nt| }|dk	rHt|tsHtd|dk	rdt|| t|| |S )z=
    Returns a connection to the address of a `Listener`
    r   Nzauthkey should be a byte string)	r2   r,   
PipeClientSocketClientr   rI   r   r   r   )r1   r&   r   r   r   r   r   r     s    


Tc             C   sj   | r>t  \}}|d |d t| }t| }n$t \}}t|dd}t|dd}||fS )zL
        Returns pair of connection objects at either end of a pipe
        TF)r;   )r:   )r+   
socketpairsetblockingr   detachr!   pipe)duplexs1s2c1c2Zfd1fd2r   r   r   r     s    

c          
   C   s   t d}| r*tj}tjtjB }tt }}ntj}tj}dt }}t||tjB tj	B tj
tjB tjB d||tjtj}t||dtjtjtjtj}t|tjdd tj|dd}|d\}	}
|
dkstt|| d}t|| d}||fS )	zL
        Returns pair of connection objects at either end of a pipe
        r   r   r   NT)rn   )r;   )r:   )r'   ro   PIPE_ACCESS_DUPLEXGENERIC_READGENERIC_WRITEBUFSIZEZPIPE_ACCESS_INBOUNDCreateNamedPipeFILE_FLAG_OVERLAPPEDFILE_FLAG_FIRST_PIPE_INSTANCEPIPE_TYPE_MESSAGEPIPE_READMODE_MESSAGE	PIPE_WAITNMPWAIT_WAIT_FOREVERNULL
CreateFileOPEN_EXISTINGSetNamedPipeHandleStateConnectNamedPiperu   rs   rm   )r   r1   ZopenmodeaccessZobsizeZibsizeZh1Zh2rn   _rw   r   r   r   r   r   r     s4    



c               @   s*   e Zd ZdZd
ddZdd Zdd Zd	S )r   zO
    Representation of a socket which is bound to an address and listening
    r   c             C   s   t  tt || _yRtjdkr2| jt jt jd | jd | j	| | j
| | j | _W n  tk
r   | j   Y nX || _d | _|dkrtj| tj|fdd| _nd | _d S )Nposixr   Tr   r   )argsexitpriority)r+   getattr_socketr!   name
setsockopt
SOL_SOCKETSO_REUSEADDRr   bindlistengetsocknamer   r?   rC   Z_familyr   r   Finalizeunlink_unlink)r8   r1   r&   r   r   r   r   r<   =  s$    



zSocketListener.__init__c             C   s&   | j  \}| _|d t| S )NT)r   r   r   r   r   r   )r8   sr   r   r   r   U  s    
zSocketListener.acceptc             C   s0   z| j   W d | j}|d k	r*d | _|  X d S )N)r   rC   r   )r8   r   r   r   r   rC   Z  s    zSocketListener.closeN)r   )ri   rj   rk   r   r<   r   rC   r   r   r   r   r   9  s   
r   c          	   C   sD   t | }ttt|"}|d ||  t| S Q R X dS )zO
    Return a connection object connected to the socket given by `address`
    TN)r2   r+   r   r   connectr   r   )r1   r&   r   r   r   r   r   d  s
    

r   c               @   s8   e Zd ZdZdddZdddZdd	 Zed
d ZdS )r   z0
        Representation of a named pipe
        Nc             C   sL   || _ | jddg| _d | _td| j  tj| tj| j| j fdd| _	d S )NT)firstz listener created with address=%rr   )r   r   )
r   _new_handle_handle_queuer   r   	sub_debugr   r   _finalize_pipe_listenerrC   )r8   r1   r   r   r   r   r<   x  s    zPipeListener.__init__Fc          
   C   sH   t jt jB }|r|t jO }t | j|t jt jB t jB t j	t
t
t jt jS )N)ro   r   r   r   r   r   r   r   r   ZPIPE_UNLIMITED_INSTANCESr   r   r   )r8   r   flagsr   r   r   r     s    

zPipeListener._new_handlec          
   C   s   | j |   | j d}ytj|dd}W n0 tk
r^ } z|jtjkrN W d d }~X Y n\X z<yt	|j
gdt}W n    |  t|  Y nX W d |d\}}|dkstX t|S )Nr   T)rn   F)r   appendr   popro   r   r?   r   ZERROR_NO_DATArq   rr   r   rt   r   ru   rs   rm   )r8   r9   rv   r   resr   rw   r   r   r   r     s"    
zPipeListener.acceptc             C   s(   t d| x| D ]}t| qW d S )Nz closing listener with address=%r)r   r   ro   r   )queuer1   r9   r   r   r   r     s    
z$PipeListener._finalize_pipe_listener)N)F)	ri   rj   rk   r   r<   r   r   staticmethodr   r   r   r   r   r   t  s
   

r   c          
   C   s   t  }x~y6t| d t| tjtjB dtjtjtjtj}W n> t	k
r| } z |j
tjtjfksjt|rl W dd}~X Y qX P qW  t|tjdd t|S )zU
        Return a connection object connected to the pipe given by `address`
        i  r   N)r   ro   ZWaitNamedPiper   r   r   r   r   r   r?   r   ZERROR_SEM_TIMEOUTZERROR_PIPE_BUSYr   r   r   rm   )r1   r   hr   r   r   r   r     s"    
r      s   #CHALLENGE#s	   #WELCOME#s	   #FAILURE#c             C   s   dd l }t|ts$tdt|tt}| 	t
|  |||d }| d}||krl| 	t n| 	t tdd S )Nr   z Authkey must be bytes, not {0!s}md5   zdigest received was wrong)hmacr   rI   r%   formatr-   r!   urandomMESSAGE_LENGTHrQ   	CHALLENGEnewdigestrX   WELCOMEFAILUREr   )
connectionr   r   messager   responser   r   r   r     s    



r   c             C   s   dd l }t|ts$tdt|| d}|d tt tksNt	d| |ttd  }|
||d }| | | d}|tkrtdd S )Nr   z Authkey must be bytes, not {0!s}r   zmessage = %rr   zdigest sent was rejected)r   r   rI   r%   r   r-   rX   rJ   r   rs   r   r   rQ   r   r   )r   r   r   r   r   r   r   r   r   r     s    

 

r   c               @   s$   e Zd Zdd Zdd Zdd ZdS )ConnectionWrapperc             C   s:   || _ || _|| _x"dD ]}t||}t| || qW d S )N)rF   rC   rc   rX   rQ   )_conn_dumps_loadsr   setattr)r8   connrS   r^   attrrT   r   r   r   r<     s    

zConnectionWrapper.__init__c             C   s   |  |}| j| d S )N)r   r   rQ   )r8   rT   r   r   r   r   rU     s    
zConnectionWrapper.sendc             C   s   | j  }| |S )N)r   rX   r   )r8   r   r   r   r   r`     s    
zConnectionWrapper.recvN)ri   rj   rk   r<   rU   r`   r   r   r   r   r     s   r   c             C   s   t | fd d d ddS )Nr   zutf-8)	xmlrpclibrS   encode)rT   r   r   r   
_xml_dumps  s    r   c             C   s   t | d\\}}|S )Nzutf-8)r   r^   decode)r   rT   methodr   r   r   
_xml_loads  s    r  c               @   s   e Zd Zdd ZdS )XmlListenerc             C   s"   dd l ma t| }t|ttS )Nr   )xmlrpc.clientclientr   r   r   r   r   r  )r8   rT   r   r   r   r   	  s    
zXmlListener.acceptN)ri   rj   rk   r   r   r   r   r   r    s   r  c              O   s   dd l ma tt| |ttS )Nr   )r  r  r   r   r   r   r  )r   kwdsr   r   r   	XmlClient  s    r  c             C   s   t | }g }x|rt|d|}|tkr,P n\t|  krHtt| k rVn n
|t8 }n2t|  krrtt| k rn n
|t8 }ntd|||  ||d d  }d}qW |S )NFzShould not get herer   r   )	listro   rq   r   r   rJ   r   r   r   )Zhandlesr   Lreadyr   r   r   r   _exhaustive_wait  s     
 
r  c       
         sl  |dkrt }n|dk rd}nt|d d }t| } i g }t  t }zFx0| D ]&}yt|d}W n  tk
r   || < Y qTX yt| dd\}}W n8 t	k
r } zd|j
 }}|tkrʂ W dd}~X Y nX |tjkr|| ||j< qT|rnt dd dkrny|d	\}	}W n* t	k
rT } z
|j
}W dd}~X Y nX |snt|d
rnd|_ | d}qTW t |}W dx|D ]}|  qW x|D ]}y|d\}	}W n6 t	k
r } z|j
}|tkr W dd}~X Y nX |tjkr|j } | |dkrt|d
rd|_qW X  fdd|D   fdd| D S )z
        Wait till an object in object_list is ready/readable.

        Returns list of those objects in object_list which are ready/readable.
        Nr   i  g      ?rF   T   )   r  Frz   c             3   s   | ]} | V  qd S )Nr   ).0r   )waithandle_to_objr   r   	<genexpr>{  s    zwait.<locals>.<genexpr>c                s   g | ]}| kr|qS r   r   )r  o)ready_objectsr   r   
<listcomp>|  s    zwait.<locals>.<listcomp>)r   intr  setr   AttributeErrorr4   ro   r~   r?   r   _ready_errorsrp   r   rr   r(   getwindowsversionru   r*   rz   addr  keysrt   ZERROR_OPERATION_ABORTEDupdate)
object_listr   Zov_listZready_handlesr  rF   rv   rw   r   r   r   )r  r  r   r   0  sh    








PollSelectorc          	   C   s   t  x}x| D ]}||tj qW |dk	r8t | }x@||}|rVdd |D S |dk	r:|t  }|dk r:|S q:W W dQ R X dS )z
        Wait till an object in object_list is ready/readable.

        Returns list of those objects in object_list which are ready/readable.
        Nc             S   s   g | ]\}}|j qS r   )fileobj)r  keyeventsr   r   r   r    s    zwait.<locals>.<listcomp>r   )_WaitSelectorregister	selectors
EVENT_READr   r   select)r  r   selectorrT   deadliner
  r   r   r   r     s    

c          	   C   sN   |   }t|tjtj*}ddlm} ||}t|| j	| j
ffS Q R X d S )Nr   )resource_sharer)rF   r+   fromfdr   SOCK_STREAMr   r(  Z	DupSocketrebuild_connectionr:   r;   )r   r9   r   r(  dsr   r   r   reduce_connection  s
    
r-  c             C   s   |   }t|  ||S )N)r   r   )r,  r:   r;   sockr   r   r   r+    s    r+  c             C   sB   | j rtjnd| jrtjndB }t|  |}t|| j | jffS )Nr   )	r:   ro   ZFILE_GENERIC_READr;   ZFILE_GENERIC_WRITEr
   Z	DupHandlerF   rebuild_pipe_connection)r   r   dhr   r   r   reduce_pipe_connection  s    r1  c             C   s   |   }t|||S )N)r   rm   )r0  r:   r;   r9   r   r   r   r/    s    r/  c             C   s    t |  }t|| j| jffS )N)r
   DupFdrF   r+  r:   r;   )r   dfr   r   r   r-    s    c             C   s   |   }t|||S )N)r   r   )r3  r:   r;   fdr   r   r   r+    s    )NN)T)T)N)N)I__all__r{   r!   r(   r+   r   r   r   	itertoolsr   r   r   r   r	   contextr
   ForkingPicklerrR   ro   r   r   r   r   ImportErrorr)   r   ZCONNECTION_TIMEOUTcountr$   r   Zfamiliesr*   r   r   r'   r,   r2   r3   rm   r   objectr   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r  r  r  r  r   ZERROR_NETNAME_DELETEDr  r   r#  r  r!  SelectSelectorr-  r+  r"  r1  r/  r   r   r   r   <module>
   s   




 PJ=

,+8	P
