j f}& @ s d Z d d l m Z d d d d d d g Z Gd d d Z Gd
d d e Z Gd d d e Z Gd d d e e Z Gd
d d e Z Gd d d e Z Gd d d e Z
d S)zAbstract Transport class. )compat
BaseTransport
ReadTransportWriteTransport TransportDatagramTransportSubprocessTransportc @ sL e Z d Z d Z d d d Z d d d Z d d Z d d
Z d S) r zBase class for transports.Nc C s" | d k r i } n | | _ d S)N)_extra)selfextra r 7/opt/alt/python34/lib64/python3.4/asyncio/transports.py__init__
s zBaseTransport.__init__c C s | j j | | S)z#Get optional transport information.)r get)r
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N)r )r
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__module__ __qualname____doc__r r r r r r r r
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t d S)zPause the receiving end.
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N)r )r
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N)r )r
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These two values control when to call the protocol's
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high-water limit. Neither value can be negative.
The defaults are implementation-specific. If only the
high-water limit is given, the low-water limit defaults to an
implementation-specific value less than or equal to the
high-water limit. Setting high to zero forces low to zero as
well, and causes pause_writing() to be called whenever the
buffer becomes non-empty. Setting low to zero causes
resume_writing() to be called only once the buffer is empty.
Use of zero for either limit is generally sub-optimal as it
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N)r )r
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N)r )r
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t d S)zClose the transport immediately.
Buffered data will be lost. No more data will be received.
The protocol's connection_lost() method will (eventually) be
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N)r )r
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aborts s zWriteTransport.abort) r r r r r r r! r" r# r$ r% r r r r
r 9 s c @ s e Z d Z d Z d S)r aS Interface representing a bidirectional transport.
There may be several implementations, but typically, the user does
not implement new transports; rather, the platform provides some
useful transports that are implemented using the platform's best
practices.
The user never instantiates a transport directly; they call a
utility function, passing it a protocol factory and other
information necessary to create the transport and protocol. (E.g.
EventLoop.create_connection() or EventLoop.create_server().)
The utility function will asynchronously create a transport and a
protocol and hook them up by calling the protocol's
connection_made() method, passing it the transport.
The implementation here raises NotImplemented for every method
except writelines(), which calls write() in a loop.
N)r r r r r r r r
r } s c @ s1 e Z d Z d Z d d d Z d d Z d S)r z(Interface for datagram (UDP) transports.Nc C s
t d S)a Send data to the transport.
This does not block; it buffers the data and arranges for it
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addr is target socket address.
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N)r )r
r Zaddrr r r
sendto s zDatagramTransport.sendtoc C s
t d S)zClose the transport immediately.
Buffered data will be lost. No more data will be received.
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N)r )r
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r s
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get_pid s zSubprocessTransport.get_pidc C s
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See also
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N)r )r
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t d S)z&Get transport for pipe with number fd.N)r )r
fdr r r
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t d S)zSend signal to subprocess.
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docs.python.org/3/library/subprocess#subprocess.Popen.send_signal
N)r )r
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t d S)aL Stop the subprocess.
Alias for close() method.
On Posix OSs the method sends SIGTERM to the subprocess.
On Windows the Win32 API function TerminateProcess()
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See also:
http://docs.python.org/3/library/subprocess#subprocess.Popen.terminate
N)r )r
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terminate s z SubprocessTransport.terminatec C s
t d S)zKill the subprocess.
On Posix OSs the function sends SIGKILL to the subprocess.
On Windows kill() is an alias for terminate().
See also:
http://docs.python.org/3/library/subprocess#subprocess.Popen.kill
N)r )r
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r s c s e Z d Z d Z d d f d d Z d d Z d d Z d d
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S)_FlowControlMixinav All the logic for (write) flow control in a mix-in base class.
The subclass must implement get_write_buffer_size(). It must call
_maybe_pause_protocol() whenever the write buffer size increases,
and _maybe_resume_protocol() whenever it decreases. It may also
override set_write_buffer_limits() (e.g. to specify different
defaults).
The subclass constructor must call super().__init__(extra). This
will call set_write_buffer_limits().
The user may call set_write_buffer_limits() and
get_write_buffer_size(), and their protocol's pause_writing() and
resume_writing() may be called.
Nc sB t j | | d k s" t | | _ d | _ | j d S)NF)superr AssertionError_loop_protocol_paused_set_write_buffer_limits)r
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z_FlowControlMixin.__init__c C s | j } | | j k r d S| j s d | _ y | j j Wq t k
r } z4 | j j i d d 6| d 6| d 6| j d 6 WYd d } ~ Xq Xn d S)NTz protocol.pause_writing() failedmessage exception transportprotocol)r _high_waterr3 _protocolZ
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_maybe_pause_protocol s z'_FlowControlMixin._maybe_pause_protocolc C s | j r | j | j k r d | _ y | j j Wq t k
r } z4 | j j i d d 6| d 6| d 6| j d 6 WYd d } ~ Xq Xn d S)NFz protocol.resume_writing() failedr6 r7 r8 r9 )r3 r
_low_waterr; Zresume_writingr< r2 r= )r
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_maybe_resume_protocol s z(_FlowControlMixin._maybe_resume_protocolc C s | j | j f S)N)rA r: )r
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get_write_buffer_limits s z)_FlowControlMixin.get_write_buffer_limitsc C s | d k r. | d k r! d } q. d | } n | d k rG | d } n | | k o^ d k n s| t d | | f n | | _ | | _ d S)N@ i r z*high (%r) must be >= low (%r) must be >= 0i )
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z*_FlowControlMixin._set_write_buffer_limitsc C s$ | j d | d | | j d S)Nr r )r4 r@ )r
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