Hello, On Sun, Oct 4, 2015 at 9:05 AM, Guillaume Lefranc < guillaume.lefr...@mariadb.com> wrote:
> Hi Roberto, > > you could have a try at it with Golang, it can wrap C code easily > https://golang.org/cmd/cgo/ > > Though with Go1.5 its now possible, uninstalling the plugins still leads to segfaults. And sadly, looks like it can't be fixed (not in near future, at least). https://github.com/golang/go/issues/12582 Best, Nirbhay Best regards, > > Guillaume Lefranc > RemoteDBA Services Manager - MariaDB Corporation Ab > > On Sun, Oct 4, 2015 at 3:26 AM, Roberto Spadim <robe...@spadim.com.br> > wrote: > >> hummm, it's like creating a ".dll" that export functions to other program >> call it? in this case your fast bit UDF functions export init/denit >> functions to mysql, right? and you are using C++ or C language when you use >> "extern"? i don't know how compiler know if it's a C or C++ code >> >> 2015-10-03 20:36 GMT-03:00 Justin Swanhart <greenl...@gmail.com>: >> >>> 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 <robe...@spadim.com.br> >>> 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 <robe...@spadim.com.br>: >>> >>>> :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 <greenl...@gmail.com>: >>>> >>>>> 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 <s...@mariadb.org> >>>>> 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 >>>>>> >>>>>> _______________________________________________ >>>>>> Mailing list: https://launchpad.net/~maria-discuss >>>>>> Post to : maria-discuss@lists.launchpad.net >>>>>> Unsubscribe : https://launchpad.net/~maria-discuss >>>>>> More help : https://help.launchpad.net/ListHelp >>>>>> >>>>> >>>>> >>>> >>>> >>>> -- >>>> Roberto Spadim >>>> SPAEmpresarial - Software ERP >>>> Eng. Automação e Controle >>>> >>> >>> >>> >>> -- >>> Roberto Spadim >>> SPAEmpresarial - Software ERP >>> Eng. Automação e Controle >>> >>> >> >> >> -- >> Roberto Spadim >> SPAEmpresarial - Software ERP >> Eng. Automação e Controle >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~maria-discuss >> Post to : maria-discuss@lists.launchpad.net >> Unsubscribe : https://launchpad.net/~maria-discuss >> More help : https://help.launchpad.net/ListHelp >> >> > > _______________________________________________ > Mailing list: https://launchpad.net/~maria-discuss > Post to : maria-discuss@lists.launchpad.net > Unsubscribe : https://launchpad.net/~maria-discuss > More help : https://help.launchpad.net/ListHelp > >
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