[issue18835] Add aligned memroy variants to the suite of PyMem functions/macros

[Antoine Pitrou]

Antoine Pitrou added the comment:

Unless the memory allocator actually supports it, this means you lose a whole lot of memory for padding, though... Memory which will sit there unused at the end of another cacheline.

Note that the current small object allocator, if not disabled, *should* already return you aligned memory, by construction (each allocation size has dedicated pools from which memory blocks are carved).

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nosy: +haypo, pitrou, tim.peters

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<http://bugs.python.org/issue18835>
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