[Python-Dev] PEP 298 - the Fixed Buffer Interface

[Thomas Heller]

> Additional Notes/Comments
> 
>     Python strings, Unicode strings, mmap objects, and maybe other
>     types would expose the fixed buffer interface, but the array type
>     would *not*, because its memory block may be reallocated during
>     its lifetime.
> 
Unfortunately it's impossible to implement the fixed buffer interface
on mmap objects - the memory mapped file can be closed at any time.
This would leave the pointers unusable.

It seems this is another use case for locking - if we want it.

Thomas