Linux AIO API wrapper
Project description
Linux AIO API wrapper
This is about in-kernel, file-descriptor-based asynchronous I/O. It has nothing to do with the asyncio standard module.
python 2 Notes
In python 2.7, a memoryview of a bytearray, despite being writable, is rejected by ctypes:
>>> from ctypes import c_char
>>> a = bytearray(b'foo')
>>> c_char.from_buffer(a)
c_char('f')
>>> b = memoryview(a)
>>> b.readonly
False
>>> c_char.from_buffer(b)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: expected a writeable buffer objectThis means that it is not possible to only read or write a few bytes at the beginning of a large buffer without having to copy memory.
The same code works fine with python 3.x .
This is considered as python 2.7 ctypes bug, and not a python-libaio bug.
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