Re: [cffi-devel] Re: [anaphora-devel] Python embedded API and passing arrays with CFFI

Jeremy Smith jeremy@decompiler.org writes:

I want an array of structs. Not pointers to structs, but actual structs. So with an array of 4 16-byte structs, it should be 64 bytes.

I've got around the problem by using a struct which has 16 entries (4 * the 4-entry struct), but that's not desirable because it doesn't scale to more module entries without increasing the struct by 4 more entries.

I think this is what you want:

(defcstruct foo (x :int) (y :int) (z :int))

(with-foreign-object (foo-array 'foo 4) ...)

FOO-ARRAY will be a pointer to storage for 4 FOO structures.

Macroexpanding this WITH-FOREIGN-OBJECT:

(WITH-FOREIGN-POINTER (FOO-ARRAY 48) ...)

James