extern "C" {
Makes the function use CDECL calling conventions, which is equivalent to
setting the .NET code to use CDECL calling conventions. Any language that
supports exporting symbols with CDECL calling conventions supports
interoperating with C (it stands for C declarations aka C calling conventions).
--Justin
Sent from my iPhone
> On Oct 3, 2015, at 1:57 PM, Roberto Spadim <[email protected]> wrote:
>
> sorry guys, i'm a bit confuse about c++ and c
>
> i'm reading your fastbit udf code
>
> at /fb_udf.h
> you have a C code, right?
> and at fb_udf.cpp a c++ code
>
> you can mix c and c++ at the same code?
>
>
> at udf.h
> what this do?
>
> "
> extern "C" {
> "
> those functions should be undestood as "C" instead of "C++", or compiler
> should "export" those c++ function to "C" "code", or something related to C
> and namespaces ?
>
> sorry it's not mysql specific but i'm not finding some C++ plugins examples
>
>
> 2015-09-21 13:43 GMT-03:00 Roberto Spadim <[email protected]>:
>> :D nice
>> what i will is something like:
>>
>> 1) a plugin daemon that receive a tcp/ip connection with a double linked
>> list "feed" (something like: clear list, delete from position x to y,
>> delete position x, insert at position x, update position x, move position x
>> to y)
>> 2) save this feed to a myisam/spider/innodb/anyother engine (i'm thinking
>> about using a mysql handler api) (i didn't check how it works, but i think
>> handler sock use it)
>> 3) keep the double linked list at memory (reconstruct the list when server
>> shutdown, maybe make some snapshots to avoid a long reconstruct, something
>> like after X lines of feed, save the list, or after x minutes)
>> 4) a engine to read the double linked list at memory (i don't know yet how
>> do this, but i will need some control about reading a shared memory, how to
>> access this shared memory from daemon plugin using storage engine)
>> 5) a engine to read information about what daemon is doing (like 4)
>> 6) at same plugin daemon, create a tcp/ip connection to "export" the same
>> feed to others users (just a proxy, not a big problem)
>>
>> at top level i think i will have 1 daemon plugin + 1 storage engine plugin
>>
>> i'm thinking about c++ 11 cause it have double linked lists, threads,
>> atomic, sockets, and i dont need others libs (maybe i'm wrong, but that was
>> my first impression about c++11)
>>
>> 2015-09-21 13:34 GMT-03:00 Justin Swanhart <[email protected]>:
>>> Hi,
>>>
>>> My fastbit UDF use C++ 11 no problem.
>>>
>>> https://github.com/greenlion/FastBit_UDF
>>>
>>>> On Fri, Sep 18, 2015 at 11:52 PM, Sergei Golubchik <[email protected]>
>>>> wrote:
>>>> Hi, Roberto!
>>>>
>>>> On Sep 18, Roberto Spadim wrote:
>>>> > guys , i'm still with doubts... but not more about c#, now about c++
>>>> > i was thinking about rewrite the code with c++
>>>> >
>>>> > my doubt is.... could i use C++ 11 ? or i will have problem with mariadb
>>>> > makefiles etc etc?
>>>>
>>>> Sure, you can use any language you want, C++11 is perfectly fine too.
>>>> cmake doesn't care.
>>>>
>>>> Regards,
>>>> Sergei
>>>>
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>>
>>
>>
>> --
>> Roberto Spadim
>> SPAEmpresarial - Software ERP
>> Eng. Automação e Controle
>
>
>
> --
> Roberto Spadim
> SPAEmpresarial - Software ERP
> Eng. Automação e Controle
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