Hello Say I have a C struct that looks like this:
struct thing {
void *buffer;
unsigned long length;
}
This struct is used to pass values of multiple types to a function. For
example, given
struct thing *t = malloc(...);
unsigned long len;
you do something like
int x = 42;
len = sizeof(int);
t->length = len;
t->buffer = malloc(len);
memcpy(t->buffer, &x, len);
or
char *s = "foo";
len = strlen(s);
t->length = len;
t->buffer = malloc(len);
memcpy(t->buffer, s, len);
In OCaml I'm representing the struct as
module Thing = struct
type t
type t = thing structure
let t : t typ = structure "thing"
let buffer = field t "buffer" (ptr void)
let length = field t "length" ulong
end
What I couldn't figure out was how do do the equivalent of the memcpy()
step using Ctypes. I've found Stubs.memcpy but it doesn't seem to be
exported.
Can this kind of thing be done directly using Ctypes or should I write a
stub to handle this case?
Thanks in advance,
Andre
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