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
Yf.l                 @   s  d  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	 d d l m
 Z
 d d l m Z d d l m Z d d	 l m Z d d
 l m Z d d l m Z d d l m Z d d l m Z d d d d g Z d Z d Z d Z d Z d Z d Z Gd d   d e
 j  Z Gd d   d e
 j  Z Gd d   d e  Z Gd d   d e  Z Gd d    d  e   Z! Gd! d"   d" e j"  Z# Gd# d   d e j$  Z% Gd$ d   d  Z& Gd% d&   d& e	 j'  Z( e# Z) Gd' d(   d( e j*  Z+ e+ Z, d S))z.Selector and proactor event loops for Windows.    N   )events)base_subprocess)futures)proactor_events)selector_events)tasks)windows_utils)_overlapped)	coroutine)loggerSelectorEventLoopProactorEventLoopIocpProactorDefaultEventLoopPolicyl    i  i  gMbP?g?c                   s   e  Z d  Z d Z d d   f d d  Z   f d d   Z d d	   Z   f d
 d   Z   f d d   Z   f d d   Z	   S)_OverlappedFuturezSubclass of Future which represents an overlapped operation.

    Cancelling it will immediately cancel the overlapped operation.
    loopNc               s3   t    j d |  |  j r& |  j d =| |  _ d  S)Nr   r   )super__init___source_traceback_ov)selfovr   )	__class__ ;/opt/alt/python35/lib64/python3.5/asyncio/windows_events.pyr   -   s    	
z_OverlappedFuture.__init__c                sZ   t    j   } |  j d  k	 rV |  j j r0 d n d } | j d d | |  j j f  | S)NpendingZ	completedr   zoverlapped=<%s, %#x>)r   
_repr_infor   r   insertaddress)r   infostate)r   r   r   r   3   s
     z_OverlappedFuture._repr_infoc             C   s   |  j  d  k r d  Sy |  j  j   Wnc t k
 r } zC d d d | d |  i } |  j rg |  j | d <|  j j |  WYd  d  } ~ Xn Xd  |  _  d  S)Nmessagez&Cancelling an overlapped future failed	exceptionfuturesource_traceback)r   cancelOSErrorr   _loopcall_exception_handler)r   exccontextr   r   r   _cancel_overlapped:   s    	#z$_OverlappedFuture._cancel_overlappedc                s   |  j    t   j   S)N)r-   r   r'   )r   )r   r   r   r'   J   s    
z_OverlappedFuture.cancelc                s   t    j |  |  j   d  S)N)r   set_exceptionr-   )r   r$   )r   r   r   r.   N   s    z_OverlappedFuture.set_exceptionc                s   t    j |  d  |  _ d  S)N)r   
set_resultr   )r   result)r   r   r   r/   R   s    z_OverlappedFuture.set_result)
__name__
__module____qualname____doc__r   r   r-   r'   r.   r/   r   r   )r   r   r   '   s   r   c                   s   e  Z d  Z d Z d d   f d d  Z d d   Z   f d d	   Z d
 d   Z d d   Z   f d d   Z	   f d d   Z
   f d d   Z   S)_BaseWaitHandleFuturez2Subclass of Future which represents a wait handle.r   Nc               sN   t    j d |  |  j r& |  j d =| |  _ | |  _ | |  _ d |  _ d  S)Nr   r   Tr   )r   r   r   r   _handle_wait_handle_registered)r   r   handlewait_handler   )r   r   r   r   Z   s    	
			z_BaseWaitHandleFuture.__init__c             C   s   t  j |  j d  t  j k S)Nr   )_winapiZWaitForSingleObjectr6   ZWAIT_OBJECT_0)r   r   r   r   _pollh   s    z_BaseWaitHandleFuture._pollc                s~   t    j   } | j d |  j  |  j d  k	 rW |  j   rD d n d } | j |  |  j d  k	 rz | j d |  j  | S)Nz
handle=%#xZsignaledZwaitingzwait_handle=%#x)r   r   appendr6   r<   r7   )r   r!   r"   )r   r   r   r   m   s    z _BaseWaitHandleFuture._repr_infoc             C   s   d  |  _  d  S)N)r   )r   futr   r   r   _unregister_wait_cbw   s    z)_BaseWaitHandleFuture._unregister_wait_cbc             C   s   |  j  s d  Sd |  _  |  j } d  |  _ y t j |  Wny t k
 r } zY | j t j k r d d d | d |  i } |  j r |  j | d <|  j j	 |  d  SWYd  d  } ~ Xn X|  j
 d   d  S)NFr#   z$Failed to unregister the wait handler$   r%   r&   )r8   r7   r
   ZUnregisterWaitr(   winerrorERROR_IO_PENDINGr   r)   r*   r?   )r   r:   r+   r,   r   r   r   _unregister_wait|   s"    					z&_BaseWaitHandleFuture._unregister_waitc                s   |  j    t   j   S)N)rB   r   r'   )r   )r   r   r   r'      s    
z_BaseWaitHandleFuture.cancelc                s   |  j    t   j |  d  S)N)rB   r   r.   )r   r$   )r   r   r   r.      s    
z#_BaseWaitHandleFuture.set_exceptionc                s   |  j    t   j |  d  S)N)rB   r   r/   )r   r0   )r   r   r   r/      s    
z _BaseWaitHandleFuture.set_result)r1   r2   r3   r4   r   r<   r   r?   rB   r'   r.   r/   r   r   )r   r   r5   W   s   
r5   c                   sL   e  Z d  Z d Z d d   f d d  Z d d   Z   f d d	   Z   S)
_WaitCancelFuturezoSubclass of Future which represents a wait for the cancellation of a
    _WaitHandleFuture using an event.
    r   Nc               s)   t    j | | | d | d  |  _ d  S)Nr   )r   r   _done_callback)r   r   eventr:   r   )r   r   r   r      s    z_WaitCancelFuture.__init__c             C   s   t  d   d  S)Nz'_WaitCancelFuture must not be cancelled)RuntimeError)r   r   r   r   r'      s    z_WaitCancelFuture.cancelc                s3   t  t |   j   |  j d  k	 r/ |  j |   d  S)N)r   rC   _schedule_callbacksrD   )r   )r   r   r   rG      s    z%_WaitCancelFuture._schedule_callbacks)r1   r2   r3   r4   r   r'   rG   r   r   )r   r   rC      s   rC   c                   sF   e  Z d  Z d d   f d d  Z   f d d   Z d d   Z   S)	_WaitHandleFuturer   Nc               sV   t    j | | | d | | |  _ d |  _ t j d  d d d   |  _ d  |  _ d  S)Nr   TF)r   r   	_proactorZ_unregister_proactorr
   ZCreateEvent_event
_event_fut)r   r   r9   r:   proactorr   )r   r   r   r      s
    		z_WaitHandleFuture.__init__c                sa   |  j  d  k	 r1 t j |  j   d  |  _  d  |  _ |  j j |  j  d  |  _ t   j |  d  S)N)	rJ   r;   CloseHandlerK   rI   _unregisterr   r   r?   )r   r>   )r   r   r   r?      s    				z%_WaitHandleFuture._unregister_wait_cbc             C   s   |  j  s d  Sd |  _  |  j } d  |  _ y t j | |  j  Wny t k
 r } zY | j t j k r d d d | d |  i } |  j r |  j | d <|  j	 j
 |  d  SWYd  d  } ~ Xn X|  j j |  j |  j  |  _ d  S)NFr#   z$Failed to unregister the wait handler$   r%   r&   )r8   r7   r
   ZUnregisterWaitExrJ   r(   r@   rA   r   r)   r*   rI   _wait_cancelr?   rK   )r   r:   r+   r,   r   r   r   rB      s$    					z"_WaitHandleFuture._unregister_wait)r1   r2   r3   r   r?   rB   r   r   )r   r   rH      s   rH   c               @   sX   e  Z d  Z d Z d d   Z d d   Z d d   Z d d	   Z d
 d   Z e Z	 d S)
PipeServerzXClass representing a pipe server.

    This is much like a bound, listening socket.
    c             C   s@   | |  _  t j   |  _ d  |  _ d  |  _ |  j d  |  _ d  S)NT)_addressweakrefWeakSet_free_instances_pipe_accept_pipe_future_server_pipe_handle)r   r    r   r   r   r      s
    			zPipeServer.__init__c             C   s    |  j  |  j d  } |  _  | S)NF)rU   rW   )r   tmpr   r   r   _get_unconnected_pipe   s    z PipeServer._get_unconnected_pipec          	   C   s   |  j    r d  St j t j B} | r3 | t j O} t j |  j | t j t j Bt j	 Bt j
 t j t j t j t j  } t j |  } |  j j |  | S)N)closedr;   ZPIPE_ACCESS_DUPLEXZFILE_FLAG_OVERLAPPEDZFILE_FLAG_FIRST_PIPE_INSTANCEZCreateNamedPiperQ   ZPIPE_TYPE_MESSAGEZPIPE_READMODE_MESSAGEZ	PIPE_WAITZPIPE_UNLIMITED_INSTANCESr	   ZBUFSIZEZNMPWAIT_WAIT_FOREVERNULL
PipeHandlerT   add)r   firstflagshpiper   r   r   rW      s    	zPipeServer._server_pipe_handlec             C   s   |  j  d  k S)N)rQ   )r   r   r   r   rZ     s    zPipeServer.closedc             C   su   |  j  d  k	 r% |  j  j   d  |  _  |  j d  k	 rq x |  j D] } | j   q> Wd  |  _ d  |  _ |  j j   d  S)N)rV   r'   rQ   rT   closerU   clear)r   ra   r   r   r   rb     s    			zPipeServer.closeN)
r1   r2   r3   r4   r   rY   rW   rZ   rb   __del__r   r   r   r   rP      s   
rP   c               @   s"   e  Z d  Z d Z d d   Z d S)_WindowsSelectorEventLoopz'Windows version of selector event loop.c             C   s
   t  j   S)N)r	   
socketpair)r   r   r   r   _socketpair&  s    z%_WindowsSelectorEventLoop._socketpairN)r1   r2   r3   r4   rg   r   r   r   r   re   #  s   re   c                   sp   e  Z d  Z d Z d   f d d  Z d d   Z e d d    Z e d	 d
    Z e d d d   Z	   S)r   z2Windows version of proactor event loop using IOCP.Nc                s)   | d  k r t    } t   j |  d  S)N)r   r   r   )r   rL   )r   r   r   r   -  s    	zProactorEventLoop.__init__c             C   s
   t  j   S)N)r	   rf   )r   r   r   r   rg   2  s    zProactorEventLoop._socketpairc             c   sN   |  j  j |  } | Ed  H} |   } |  j | | d d | i } | | f S)Nextraaddr)rI   connect_pipe_make_duplex_pipe_transport)r   protocol_factoryr    fra   protocoltransr   r   r   create_pipe_connection5  s    	z(ProactorEventLoop.create_pipe_connectionc                sA   t      d        f d d    j    g S)Nc                sb  d  } y |  rj |  j    }  j j |   j   rE | j   d  S   }  j | | d d   i  j   } | d  k r d  S j j |  }  Wn t	 k
 r#} zh | r | j
   d k r  j d d d | d | i  | j   n  j rt j d | d	 d
 WYd  d  } ~ Xn; t j k
 rG| rC| j   Yn X|   _ |  j   d  S)Nrh   ri   r   r#   zPipe accept failedr$   ra   zAccept pipe failed on pipe %rexc_infoTr   )r0   rT   discardrZ   rb   rk   rY   rI   accept_piper(   filenor*   Z_debugr   Zwarningr   CancelledErrorrV   add_done_callback)rm   ra   rn   r+   )r    loop_accept_piperl   r   serverr   r   rw   B  s<    
				z>ProactorEventLoop.start_serving_pipe.<locals>.loop_accept_pipe)rP   Z	call_soon)r   rl   r    r   )r    rw   rl   r   rx   r   start_serving_pipe>  s    !(z$ProactorEventLoop.start_serving_pipec	             k   s   |  j    }
 t |  | | | | | | | d |
 d | |	 } y |
 Ed  HWn+ t k
 rv } z | } WYd  d  } ~ Xn Xd  } | d  k	 r | j   | j   Ed  H|  | S)Nwaiterrh   )create_future_WindowsSubprocessTransport	Exceptionrb   Z_wait)r   rn   argsshellstdinstdoutstderrbufsizerh   kwargsrz   Ztranspr+   errr   r   r   _make_subprocess_transportm  s    		
z,ProactorEventLoop._make_subprocess_transport)
r1   r2   r3   r4   r   rg   r   rp   ry   r   r   r   )r   r   r   *  s   	/c               @   s6  e  Z d  Z d Z d 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   Z d d   Z e d d    Z d	 d d  Z d d   Z d d    Z d! d"   Z d# d$   Z d% d&   Z d' d(   Z d	 d) d*  Z d+ d,   Z d- d.   Z d/ d0   Z d	 S)1r   z#Proactor implementation using IOCP.l    c             C   sd   d  |  _  g  |  _ t j t j t d |  |  _ i  |  _ t j	   |  _
 g  |  _ t j	   |  _ d  S)Nr   )r)   _resultsr
   CreateIoCompletionPortINVALID_HANDLE_VALUEr[   _iocp_cacherR   rS   r8   _unregistered_stopped_serving)r   Zconcurrencyr   r   r   r     s    				zIocpProactor.__init__c             C   s)   d |  j  j t |  j  t |  j  f S)Nz<%s overlapped#=%s result#=%s>)r   r1   lenr   r   )r   r   r   r   __repr__  s    zIocpProactor.__repr__c             C   s   | |  _  d  S)N)r)   )r   r   r   r   r   set_loop  s    zIocpProactor.set_loopNc             C   s,   |  j  s |  j |  |  j  } g  |  _  | S)N)r   r<   )r   timeoutrX   r   r   r   select  s
    			zIocpProactor.selectc             C   s    |  j  j   } | j |  | S)N)r)   r{   r/   )r   valuer>   r   r   r   _result  s    zIocpProactor._resultr   c             C   s   |  j  |  t j t  } yH t | t j  rM | j | j   | |  n | j | j   |  Wn t	 k
 r |  j
 d  SYn Xd d   } |  j | | |  S)N    c             S   sa   y | j    SWnL t k
 r\ } z, | j t j k rG t | j    n   WYd  d  } ~ Xn Xd  S)N)	getresultr(   r@   r
   ERROR_NETNAME_DELETEDConnectionResetErrorr~   )ro   keyr   r+   r   r   r   finish_recv  s    z&IocpProactor.recv.<locals>.finish_recv)_register_with_iocpr
   
Overlappedr[   
isinstancesocketZWSARecvrt   ZReadFileBrokenPipeErrorr   	_register)r   connnbytesr_   r   r   r   r   r   recv  s    	zIocpProactor.recvc             C   s   |  j  |  t j t  } t | t j  rJ | j | j   | |  n | j | j   |  d d   } |  j	 | | |  S)Nc             S   sa   y | j    SWnL t k
 r\ } z, | j t j k rG t | j    n   WYd  d  } ~ Xn Xd  S)N)r   r(   r@   r
   r   r   r~   )ro   r   r   r+   r   r   r   finish_send  s    z&IocpProactor.send.<locals>.finish_send)
r   r
   r   r[   r   r   ZWSASendrt   Z	WriteFiler   )r   r   bufr_   r   r   r   r   r   send  s    	zIocpProactor.sendc                s   |  j    |  j  j    t j t  } | j  j     j       f d d   } t d d    } |  j	 |  |  } | |    } t
 j | d |  j | S)Nc                s^   | j    t j d  j    }   j t j t j |    j	  j
        j   f S)Nz@P)r   structZpackrt   
setsockoptr   
SOL_SOCKETr
   ZSO_UPDATE_ACCEPT_CONTEXT
settimeoutZ
gettimeoutZgetpeername)ro   r   r   r   )r   listenerr   r   finish_accept  s    
z*IocpProactor.accept.<locals>.finish_acceptc             s   s6   y |  Ed  HWn" t  j k
 r1 | j     Yn Xd  S)N)r   ru   rb   )r%   r   r   r   r   accept_coro  s
    
z(IocpProactor.accept.<locals>.accept_coror   )r   _get_accept_socketfamilyr
   r   r[   ZAcceptExrt   r   r   r   Zensure_futurer)   )r   r   r   r   r   r%   coror   )r   r   r   accept  s    		zIocpProactor.acceptc                s   |  j     y t j   j     j  WnS t k
 r } z3 | j t j k rT     j	   d d k rm   WYd  d  } ~ Xn Xt j
 t  } | j   j   |    f d d   } |  j |   |  S)Nr   r   c                s'   | j      j t j t j d    S)Nr   )r   r   r   r   r
   ZSO_UPDATE_CONNECT_CONTEXT)ro   r   r   )r   r   r   finish_connect  s    
z,IocpProactor.connect.<locals>.finish_connect)r   r
   Z	BindLocalrt   r   r(   r@   errnoZ	WSAEINVALZgetsocknamer   r[   Z	ConnectExr   )r   r   r    er   r   r   )r   r   connect  s    zIocpProactor.connectc                si   |  j     t j t  } | j   j    } | rD |  j    S  f d d   } |  j |   |  S)Nc                s   | j      S)N)r   )ro   r   r   )ra   r   r   finish_accept_pipe  s    
z4IocpProactor.accept_pipe.<locals>.finish_accept_pipe)r   r
   r   r[   ZConnectNamedPipert   r   r   )r   ra   r   Z	connectedr   r   )ra   r   rs     s    zIocpProactor.accept_pipec             c   s   t  } x y t j |  } PWn: t k
 rY } z | j t j k rG   WYd  d  } ~ Xn Xt | d t  } t j	 | d |  j
 Ed  Hq	 Wt j |  S)N   r   )CONNECT_PIPE_INIT_DELAYr
   ZConnectPiper(   r@   ZERROR_PIPE_BUSYminCONNECT_PIPE_MAX_DELAYr   Zsleepr)   r	   r\   )r   r    Zdelayr9   r+   r   r   r   rj     s    zIocpProactor.connect_pipec             C   s   |  j  | | d  S)zWait for a handle.

        Return a Future object. The result of the future is True if the wait
        completed, or False if the wait did not complete (on timeout).
        F)_wait_for_handle)r   r9   r   r   r   r   wait_for_handle*  s    zIocpProactor.wait_for_handlec             C   s"   |  j  | d  d  } | | _ | S)NT)r   rD   )r   rE   Zdone_callbackr>   r   r   r   rO   2  s    	zIocpProactor._wait_cancelc                s   | d  k r t  j } n t j | d  } t j t  } t j | |  j | j	 |  } | r| t
 | | | d |  j   n t | | | |  d |  j     j r   j d =  f d d   }   | d | f |  j | j	 <  S)Ng     @@r   r   c                s
     j    S)N)r<   )ro   r   r   )rm   r   r   finish_wait_for_handleM  s    z=IocpProactor._wait_for_handle.<locals>.finish_wait_for_handler   r   )r;   INFINITEmathceilr
   r   r[   ZRegisterWaitWithQueuer   r    rC   r)   rH   r   r   )r   r9   r   Z
_is_cancelmsr   r:   r   r   )rm   r   r   9  s    	
	zIocpProactor._wait_for_handlec             C   sB   | |  j  k r> |  j  j |  t j | j   |  j d d  d  S)Nr   )r8   r]   r
   r   rt   r   )r   objr   r   r   r   Y  s    z IocpProactor._register_with_iocpc             C   s   t  | d |  j } | j r( | j d =| j s y | d  d  |  } Wn2 t k
 r{ } z | j |  WYd  d  } ~ Xn X| j |  | | | | f |  j | j <| S)Nr   r   r   )	r   r)   r   r   r(   r.   r/   r   r    )r   r   r   callbackrm   r   r   r   r   r   r   c  s    	
	 
zIocpProactor._registerc             C   s   |  j  j |  d S)a  Unregister an overlapped object.

        Call this method when its future has been cancelled. The event can
        already be signalled (pending in the proactor event queue). It is also
        safe if the event is never signalled (because it was cancelled).
        N)r   r=   )r   r   r   r   r   rN     s    zIocpProactor._unregisterc             C   s    t  j  |  } | j d  | S)Nr   )r   r   )r   r   sr   r   r   r     s    zIocpProactor._get_accept_socketc             C   s  | d  k r t  } nF | d k  r0 t d   n+ t j | d  } | t  k r[ t d   xut j |  j |  } | d  k r Pd } | \ } } } } y" |  j j |  \ } }	 }
 } Wnr t	 k
 r.|  j
 j   r|  j
 j d d d d | | | | f i  | d t j f k r't j |  w^ Yn X|
 |  j k rK| j   q^ | j   s^ y | | | |	  } WnB t k
 r} z" | j |  |  j j |  WYd  d  } ~ Xq^ X| j |  |  j j |  q^ Wx' |  j D] }	 |  j j |	 j d   qW|  j j   d  S)	Nr   znegative timeoutg     @@ztimeout too bigr#   z8GetQueuedCompletionStatus() returned an unexpected eventstatusz)err=%s transferred=%s key=%#x address=%#x)r   
ValueErrorr   r   r
   ZGetQueuedCompletionStatusr   r   popKeyErrorr)   Z	get_debugr*   r   r;   rM   r   r'   doner(   r.   r   r=   r/   r   r    rc   )r   r   r   r   r   Ztransferredr   r    rm   r   r   r   r   r   r   r   r   r<     sJ    	"	#zIocpProactor._pollc             C   s   |  j  j |  d  S)N)r   r]   )r   r   r   r   r   _stop_serving  s    zIocpProactor._stop_servingc             C   s7  x t  |  j j    D] \ } \ } } } } | j   r= q t | t  rO q y | j   Wq t k
 r } zR |  j d  k	 r d d d | d | i } | j	 r | j	 | d <|  j j
 |  WYd  d  } ~ Xq Xq Wx) |  j r|  j d  s t j d  q Wg  |  _ |  j d  k	 r3t j |  j  d  |  _ d  S)Nr#   zCancelling a future failedr$   r%   r&   r   z"taking long time to close proactor)listr   itemsZ	cancelledr   rC   r'   r(   r)   r   r*   r<   r   debugr   r   r;   rM   )r   r    r>   r   r   r   r+   r,   r   r   r   rb     s,    .	'	zIocpProactor.closec             C   s   |  j    d  S)N)rb   )r   r   r   r   rd     s    zIocpProactor.__del__)r1   r2   r3   r4   r   r   r   r   r   r   r   r   r   rs   r   rj   r   rO   r   r   r   rN   r   r<   r   rb   rd   r   r   r   r   r     s.   
 
	7 c               @   s   e  Z d  Z d d   Z d S)r|   c       
         sw   t  j | d | d | d | d | d | |   _   f d d   }   j j j t   j j   }	 |	 j |  d  S)Nr   r   r   r   r   c                s      j  j   }   j |  d  S)N)_procZpollZ_process_exited)rm   
returncode)r   r   r   r     s    z4_WindowsSubprocessTransport._start.<locals>.callback)	r	   Popenr   r)   rI   r   intr6   rv   )
r   r~   r   r   r   r   r   r   r   rm   r   )r   r   _start  s    !z"_WindowsSubprocessTransport._startN)r1   r2   r3   r   r   r   r   r   r|     s   r|   c               @   s   e  Z d  Z e Z d S)_WindowsDefaultEventLoopPolicyN)r1   r2   r3   r   Z_loop_factoryr   r   r   r   r     s   r   )-r4   r;   r   r   r   r   rR    r   r   r   r   r   r   r	   r
   Z
coroutinesr   logr   __all__r[   r   ZERROR_CONNECTION_REFUSEDZERROR_CONNECTION_ABORTEDr   r   ZFuturer   r5   rC   rH   objectrP   ZBaseSelectorEventLoopre   ZBaseProactorEventLoopr   r   ZBaseSubprocessTransportr|   r   ZBaseDefaultEventLoopPolicyr   r   r   r   r   r   <module>   sJ   		0J4;] j