Current File : //lib/python3/dist-packages/pyudev/_os/__pycache__/pipe.cpython-312.pyc
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pyudev._os.pipe
===============
Fallback implementations for pipe.
1. pipe2 from python os module
2. pipe2 from libc
3. pipe from python os module
The Pipe class wraps the chosen implementation.
.. moduleauthor:: Sebastian Wiesner <lunaryorn@gmail.com>
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SIGNATURES)�load_ctypes_library� O_CLOEXECi c �N � t � }| j ||� |d |d fS )z�A ``pipe2`` implementation using ``pipe2`` from ctypes.
``libc`` is a :class:`ctypes.CDLL` object for libc. ``flags`` is an
integer providing the flags to ``pipe2``.
Return a pair of file descriptors ``(r, w)``.
r � )r �pipe2)�libc�flags�fdss �1/usr/lib/python3/dist-packages/pyudev/_os/pipe.py�
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``flags`` is an integer providing the flags to ``pipe2``.
.. warning::
This implementation is not atomic!
Return a pair of file descriptors ``(r, w)``.
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Find the appropriate implementation for ``pipe2``.
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r N)r �F_GETFL�F_SETFLr" s r r r n r% r c �, � e Zd ZdZed� � Zd� Zd� Zy)�Pipez�A unix pipe.
A pipe object provides two file objects: :attr:`source` is a readable file
object, and :attr:`sink` a writeable. Bytes written to :attr:`sink` appear
at :attr:`source`.
Open a pipe with :meth:`open()`.
c �Z � t t j t z � \ }} | ||� S )zLOpen and return a new :class:`Pipe`.
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�b�m�m�i� 7�8� ����6�4� � r c �t � t j |dd� | _ t j |dd� | _ y)z�Create a new pipe object from the given file descriptors.
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�i�i� �4��3�� ��I�I�g�t�Q�/�� r c � � | j j � | j j � y# | j j � w xY w)z Closes both sides of the pipe.N)r. �closer/ )r5 s r r: z
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