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d� Z dS )r zBase class for transports.Nc C s |d kr i }|| _ d S )N)�_extra)�self�extra� r �*/usr/lib64/python3.6/asyncio/transports.py�__init__
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with None as its argument.
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�close s zBaseTransport.closec C s t �dS )zSet a new protocol.N)r )r
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� set_protocol$ s zBaseTransport.set_protocolc C s t �dS )z Return the current protocol.N)r )r
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c @ s e Zd ZdZdd� Zdd� ZdS )r z#Interface for read-only transports.c C s t �dS )z�Pause the receiving end.
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pause_reading0 s zReadTransport.pause_readingc C s t �dS )z�Resume the receiving end.
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�resume_reading8 s z ReadTransport.resume_readingN)r r r r r r r r r r
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dS )r z$Interface for write-only transports.Nc C s t �dS )a� Set the high- and low-water limits for write flow control.
These two values control when to call the protocol's
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high-water limit. Neither value can be negative.
The defaults are implementation-specific. If only the
high-water limit is given, the low-water limit defaults to an
implementation-specific value less than or equal to the
high-water limit. Setting high to zero forces low to zero as
well, and causes pause_writing() to be called whenever the
buffer becomes non-empty. Setting low to zero causes
resume_writing() to be called only once the buffer is empty.
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reduces opportunities for doing I/O and computation
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�set_write_buffer_limitsD s z&WriteTransport.set_write_buffer_limitsc C s t �dS )z,Return the current size of the write buffer.N)r )r
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�write] s zWriteTransport.writec C s t j|�}| j|� dS )z�Write a list (or any iterable) of data bytes to the transport.
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� write_eofn s zWriteTransport.write_eofc C s t �dS )zAReturn True if this transport supports write_eof(), False if not.N)r )r
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can_write_eofw s z WriteTransport.can_write_eofc C s t �dS )z�Close the transport immediately.
Buffered data will be lost. No more data will be received.
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�abort{ s zWriteTransport.abort)NN) r r r r r! r" r$ r% r& r' r( r r r r
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c @ s e Zd ZdZdS )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.
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r � s c @ s" e Zd ZdZddd�Zdd� ZdS )r z(Interface for datagram (UDP) transports.Nc C s t �dS )a Send data to the transport.
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addr is target socket address.
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�sendto� s zDatagramTransport.sendtoc C s t �dS )z�Close the transport immediately.
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�get_pid� s zSubprocessTransport.get_pidc C s t �dS )z�Get subprocess returncode.
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�get_returncode� s z"SubprocessTransport.get_returncodec C s t �dS )z&Get transport for pipe with number fd.N)r )r
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�get_pipe_transport� s z&SubprocessTransport.get_pipe_transportc C s t �dS )z�Send signal to subprocess.
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� send_signal� s z SubprocessTransport.send_signalc C s t �dS )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()
is called to stop the subprocess.
See also:
http://docs.python.org/3/library/subprocess#subprocess.Popen.terminate
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� terminate� s z SubprocessTransport.terminatec C s t �dS )z�Kill the subprocess.
On Posix OSs the function sends SIGKILL to the subprocess.
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See also:
http://docs.python.org/3/library/subprocess#subprocess.Popen.kill
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� Z 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.
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