On Mon, Apr 26, 2010 at 1:11 AM, Luís Oliveira luismbo@gmail.com wrote:
On Sun, Apr 25, 2010 at 6:43 PM, Juan Jose Garcia-Ripoll juanjose.garciaripoll@googlemail.com wrote:
... provided in this patch.
I have a few questions about this patch.
(defun pointer-eq (ptr1 ptr2) "Return true if PTR1 and PTR2 point to the same address."
- (= (ffi:pointer-address ptr1) (ffi:pointer-address ptr2)))
- ;; In ECL two pointers are EQUAL if they point to the same address.
- (equal ptr1 ptr2))
One advantage of the previous definition is that passing non-pointers to POINTER-EQ would (I assume) signal an error. What do you think?
If this is the intended behavior in all platforms then I will have to think about something else for the inline expansion as well -- is it ok if the error check is removed for low safety settings?
+(define-compiler-macro null-pointer ()
- '(si::allocate-foreign-data :void 0))
Any reason why a simpler (declaim (inline null-pointer)) wouldn't work just as well?
Such a proclamation would not get propagate anywhere -- ECL does not keep the definion of inline functions
Juanjo