c# - Entry point not found with 32bits DLL. Working with 64 bits DLL -

c# - Entry point not found with 32bits DLL. Working with 64 bits DLL -

our team developped c++ cuda dll , c# .net 4.5 hmi uses our dll.

these programs planed available 64bits platform.

recently our client inquire create our developpements available 32bits platform too.

we manage compile dll , hmi in 32bits.

so have 2 configurations :

hmi x64 uses cuda dll x64 hmi x86 uses cuda dll x86

the 64bits configuration works perfectly.

the 32bits configuration has problems :

only exported functions available unvailable functions calls throw exception : entry point not found < name > in < dllname >

exploring our 32 , 64bits dll dependency walker shows exported functions. (only mangled names alter between 32 & 64bits)

here prototypes of available exported functions :

extern "c" retourinit __declspec(dllexport) __stdcall initgpu(); extern "c" retour __declspec(dllexport) __stdcall setimagegpu(int idgpu, int nbimages, image * listeimages); extern "c" retour __declspec(dllexport) __stdcall getimagegpu(int idgpu, int nbimages, image * listeimages); extern "c" retour __declspec(dllexport) __stdcall duplicateimage(int idgpu, int nbimages, image * listeimages);

here prototypes of unavailable exported functions :

extern "c" retour __declspec(dllexport) __stdcall decoupe(int idcarte, decoupe paramdecoupe); extern "c" retour __declspec(dllexport) __stdcall fusion(int idcarte, fusion paramfusion);

if have solution propose or questions glad hear it.

thanks all.

the problem due passing fusion & decoupe structures not pointer.

we alter our prototypes :

extern "c" retour __declspec(dllexport) __stdcall decoupe(int idcarte, decoupe* paramdecoupe); extern "c" retour __declspec(dllexport) __stdcall fusion(int idcarte, fusion* paramfusion);

and adapt our dll code. our c# hmi hasn't changed.

this modification works in x86 & x64.

it's weird 64bits platform isn't impacted modification...

thanks comments.

c# c++ dll cuda 32bit-64bit