[tarantool-patches] Re: [PATCH] box: add tuple:size function

[Konstantin Osipov <kostja@tarantool.org>]

* Vladislav Shpilevoy <v.shpilevoy@tarantool.org> [18/10/17 21:12]:

> Also, some people can use it right now to allocate a
> buffer of a correct size before calling box_tuple_to_buf.
> I understand, that box_tuple_to_buf(tuple, NULL, 0) returns
> bsize as well, but some people could miss it, or just use
> box_tuple_bsize because it looks better when you write like
> this:
> 
>     size = box_tuple_bsize(tuple)
>     buf = alloc(size)
>     box_tuple_to_buf(tuple, buf, size)
> 
> than like this:
> 
>     size = box_tuple_to_buf(tuple, NULL, 0) // <- difference
>     buf = alloc(size)
>     box_tuple_to_buf(tuple, buf, size)
> 
> Even if we close eyes on the fact, that a user of
> the first way will allocate more data than needed,
> imagine, that then he does something like this:
> 
>     send(sockfd, buf, size)
> 
> Now, he send some garbage uninitialized data of 14
> bytes at the end of buf.

Is there any known use?

-- 
Konstantin Osipov, Moscow, Russia, +7 903 626 22 32
http://tarantool.io - www.twitter.com/kostja_osipov