X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/clg/blobdiff_plain/441c73825df3b2172b925fee53f1c1aad305a005..19406f20ddb51fdcf94bf9a91c12c53717bad724:/gffi/proxy.lisp

diff --git a/gffi/proxy.lisp b/gffi/proxy.lisp
index 3670bdb..c54c423 100644
--- a/gffi/proxy.lisp
+++ b/gffi/proxy.lisp
@@ -20,7 +20,7 @@
 ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-;; $Id: proxy.lisp,v 1.5 2006/09/29 13:14:19 espen Exp $
+;; $Id: proxy.lisp,v 1.8 2007/05/10 20:23:28 espen Exp $
 
 (in-package "GFFI")
 
@@ -87,7 +87,7 @@ (defun list-invalidated-instances ()
 (defvar *foreign-instance-locations* 
   (make-hash-table #+clisp :weak #+sbcl :weakness :key))
 
-;; TODO: add a ref-counted-proxy subclass
+
 (eval-when (:compile-toplevel :load-toplevel :execute)
   (defclass proxy (virtual-slots-object)
     (#?-(or (sbcl>= 0 9 17) (featurep :clisp))(%location :special t :type pointer))
@@ -167,6 +167,7 @@ (defmethod instance-finalizer ((instance proxy))
 ;; :FINALZIE given to MAKE-PROXY-INSTANCE or non NIL if the proxy was
 ;; created with MAKE-INSTANCE
 (defmethod invalidate-instance ((instance proxy) &optional finalize-p)
+  #+clisp(declare (ignore finalize-p))
   (remove-cached-instance (foreign-location instance))
   #+(or sbcl cmu)
   (progn
@@ -499,6 +500,20 @@ (defmethod make-proxy-instance ((class proxy-class) location
     (cache-instance instance)
     instance))
 
+;;;; Superclass for ref-counted objects
+
+(defclass ref-counted-object (proxy)
+  ()
+  (:metaclass proxy-class))
+
+(define-type-method from-alien-form ((type ref-counted-object) form 
+				     &key (ref :copy))
+  (call-next-method type form :ref ref))
+
+(define-type-method from-alien-function ((type ref-counted-object) 
+					 &key (ref :copy))
+  (call-next-method type :ref ref))
+
 
 ;;;; Superclasses for wrapping of C structures