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rtti

Yuriy Kubasov
Intellectual 960 points


I have the OMAPL137EVM board.

I want to use RTTI (dynamic_cast) in my C++ project.

I use NDK also.

Should I rebuild NDK libraries with the --rtti key?

Does the speed penalty using RTTI is much sufficient?

Best regards,

Yuriy

  • 0
    TI__Guru**** 171309 points

    Yuriy,

    Yuriy Kubasov said:

    Should I rebuild NDK libraries with the --rtti key?

    Yes. Check the reference below:

    http://processors.wiki.ti.com/index.php/Overview_of_C%2B%2B_Support_in_TI_Compilers#Exceptions_and_RTTI

    Yuriy Kubasov said:

    Does the speed penalty using RTTI is much sufficient?

    Since NDK was never tested with RTTI enabled, I don't have a conclusive answer but just some comments:

    Since all the time-based functions of NDK are based on DSP/BIOS timers, I don't foresee a functional problem with the code overhead that RTTI will add - in other words, it should work. However, I would expect some performance loss especially if you need high throughput. At last, make sure that DSP/BIOS libraries have RTTI support enabled - I am not sure if they currently have this option, though.

    Best regards,

    Rafael