Calling C function from .so file by memory address from go module. (cgo)

Question

I have an old .so file with a very complex clang parser in it and I have to call it from a go module.

    ...
    lib := C.dlopen(C.CString("./resources/bin/parser.so"), C.RTLD_LAZY)
    functions_address := C.dlsym(lib, C.CString("parse"))

C.call(functions_address)?

Alexis Wilke
– Alexis Wilke

2020-08-31 17:50:50 +00:00
Commented Aug 31, 2020 at 17:50 — Alexis Wilke
– Alexis Wilke, Commented Aug 31, 2020 at 17:50
I have found a workaround. I'll post it here.

Noslopy
– Noslopy

2020-08-31 19:40:06 +00:00
Commented Aug 31, 2020 at 19:40 — Noslopy
– Noslopy, Commented Aug 31, 2020 at 19:40

Noslopy · Accepted Answer · 2020-08-31 19:45:52Z

0

I have solved this by defining a C typedef, creating a helper method and passing the "functions_address" to that helper method which calls the other function by reference

typedef char (*parse) (char *file);

char bridge (parse p, char* file) {
        p(file);
}

answered Aug 31, 2020 at 19:45

Noslopy

13 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Calling C function from .so file by memory address from go module. (cgo)

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related