Storing a C function pointer in an SV

Howdy folks,

Is there a recommended/safe/sane way to store a C function pointer in an SV?

(Attached is Example.tar.gz which contains a module with the full code
for example)

This works (sample from Example.xs):


  SV * store_func_in_sv(void *addr) {
          return newSViv( (IV)addr );
  }

  void call_func_from_sv(SV *sv) {
          void (*func)() = (void *)SvIV(sv);
          func();
  }

  void func() {
          warn("Called!\n");
  }

  MODULE = Example                PACKAGE = Example

  void
  test()
      CODE:
          SV *ptr = store_func_in_sv(func);
          call_func_from_sv(ptr);


But I'm not sure that's portable or safe.

Thanks,

-- Matthew Horsfall (alh)

• Storing a C function pointer in an SV by wolfsage
• Re: Storing a C function pointer in an SV by Nicholas Clark
• Re: Storing a C function pointer in an SV by bulk88
• Re: Storing a C function pointer in an SV by Lukas Mai
• Re: Storing a C function pointer in an SV by wolfsage
• Re: Storing a C function pointer in an SV by Zefram
• Re: Storing a C function pointer in an SV by bulk88