[FFmpeg-devel] [PATCH 3/8] avutil/mem: Add av_fast_realloc_array()

[Andreas Rheinhardt]

Anton Khirnov:
> Quoting Andreas Rheinhardt (2022-07-14 14:51:07)
>> Anton Khirnov:
>>> Quoting Andreas Rheinhardt (2022-07-12 16:12:16)
>>>> Anton really dislikes the av_fast_* naming and instead wants this to be
>>>> called av_realloc_array_reuse(). I don't care either way. Any more
>>>> opinions on this (or on the patch itself)?
>>>
>>> If people dislike _reuse(), I am open to other reasonable suggestions.
>>> This 'fast' naming sucks because
>>> - it tells you nothing about how this function is "fast"
>>> - it is added at the beginning rather than the end, which is
>>>   against standard namespacing conventions
>>>
>>
>> Isn't reusing the basic modus operandi for a reallocation function? So
>> your suggested name doesn't seem to fit either.
> 
> Ordinary realloc just keeps the data, I wouldn't call that "reuse" since
> it will often be a copy. This "fast" realloc OTOH reuses the actual
> buffer, same as all the other "fast" mem.h functions.
> 
> But feel free to suggest another naming pattern if you can think of one.
> 

I see two differences between this function and ordinary realloc: It
never shrinks the buffer and it overallocates. These two properties make
it more likely that these functions can avoid copies more often than
plain realloc (but in contrast to realloc, we can not grow the buffer in
case there is free space after it), but it is nevertheless the same as
realloc.

But I don't really care that much about the name and will therefore use
your name as I can't come up with anything better.
(Of course, I am still open to alternative suggestions.)

- Andreas