Implementing private class method as ispc function

[Martin Šošić]

Hi everybody, I have a following situation:
I have a static private class method which I can parallelize, so I decided to call ispc function from it.
Problem is I am using private structures (nested in class) inside my function, which means I need to also use them in ispc function, and I don't know what is the best way to do it?
How can I make them visible to ispc function? I can not do extern "C" because these structures are nested in class.
My best idea so far is to create extra .h file where i declare this structures and then include it both in .hpp class file and in .ispc file, however if I do that then those structures will not be private but global, which I dont like.

Thank you 

[Dmitry Babokin]

Unfortunatelly, ispc doesn't work with magled names (all C++ symbols, except those, which are marked with extern C). So all symbols (functions, variables, types) should be C-style symbols. One of implications is that these symbols should have global visibility (in C++ namespace/class and etc is part of mangled name). So you have to have global definitions for exposred symbols/types.

But as you've mentioned, you can do a hack and define these types in some file, which is included inside the class (so the types belong to class) and included in .ispc file. In this case this is your responsibility to make sure that it works as you expect (alignment and structures layout and etc are the same).

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