On Thu, Jul 17, 2008 at 12:08 PM, kyra
Yes, but programmer *knows* the structure layout, so she usually can emulate it with a sequence of primary ffi type arguments. It's pretty trivial for the original example (see my previous post on this subj) and can be extended further. For example, in my homebrew COM library I pretty successfully marshall 16-byte Variants *by value* by means of two consecutive "legal" Word64 arguments.
I am concerned, however, with the portability of the library. I mean, is the calling convention for both void func(vect v); void func(float x, float y); the same on x86? On x86-64? On Windows? On Linux? I guess it would be a lot faster to pass the arguments on the stack than alloca'ting, copying to the new area and then copying from the area to the stack, but I don't want to sacrifice the portability. Thanks, -- Felipe.