func constructClosure(fn *function) (err error) {
var ptr unsafe.Pointer
var rc C.int
if rc, err = C.ffi_closure_alloc__(&ptr); rc != 0 {
return
}
if status := Status(C.ffi_prep_closure((*C.ffi_closure)(ptr), &fn.Interface.ffi_cif, C.closure(C.GoClosureCallback), unsafe.Pointer(fn))); status != OK {
C.ffi_closure_free__(ptr)
err = status
return
}
if rc, err = C.ffi_closure_make_executable__(ptr); rc != 0 {
C.ffi_closure_free__(ptr)
return
}
fn.fptr = ptr
fn.mptr = ptr
return nil
}
func destroyClosure(fn *function) {
C.ffi_closure_free__(fn.mptr)
}