[Python-Dev] Using PEP384 Stable ABI for the lzma extension module (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Wed Oct 5 18:14:08 CEST 2011

Le mercredi 05 octobre 2011 à 18:12 +0200, "Martin v. Löwis" a écrit :

>> Not sure what you are using it for. If you need to extend the buffer >> in case it is too small, there is absolutely no way this could work >> without copies in the general case because of how computers use >> address space. Even PyBytesResize will copy the data. > > That's not a given. Depending on the memory allocator, a copy can be > avoided. That's why the "str += str" hack is much more efficient under > Linux than Windows, AFAIK.

Even Linux will have to copy a block on realloc in certain cases, no?

Probably so. How often is totally unknown to me :)

Regards

Antoine.

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