Changes necessary to allow saving of core images with clg.

[clg] / glib / gboxed.lisp

diff --git a/glib/gboxed.lisp b/glib/gboxed.lisp
index 1bf29164455d184f1166941eecdd0b593f2b5f3a..1bb152b599ccea6657cb6eb43929d07ddbaae393 100644 (file)
--- a/glib/gboxed.lisp
+++ b/glib/gboxed.lisp
@@ -15,94 +15,100 @@
 ;; License along with this library; if not, write to the Free Software
 ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
-;; $Id: gboxed.lisp,v 1.1 2001-04-29 20:19:25 espen Exp $
+;; $Id: gboxed.lisp,v 1.17 2005-03-06 17:26:23 espen Exp $
 
 (in-package "GLIB")
 
 
-(eval-when (:compile-toplevel :load-toplevel :execute)
-  (defclass boxed (alien-structure)
-    ()
-    (:metaclass proxy-class)))
-
-(defmethod initialize-proxy ((boxed boxed) &rest initargs
-                            &key location weak-ref)
-  (declare (ignore initargs))
-  (setf
-   (slot-value boxed 'location)
-   (if weak-ref
-       (%boxed-copy (find-type-number (class-of boxed)) location)
-     location))
-  (call-next-method))
-
-(defmethod instance-finalizer ((boxed boxed))
-  (let ((location (proxy-location boxed))
-       (type-number (find-type-number (class-of boxed))))
-    (declare (type system-area-pointer location))
+(defclass boxed (struct)
+  ()
+  (:metaclass struct-class))
+
+(defmethod instance-finalizer ((instance boxed))
+  (let ((location (proxy-location instance))
+       (type-number (type-number-of instance)))
     #'(lambda ()
-       (%boxed-free type-number location)
-       (remove-cached-instance location))))
+       (remove-cached-instance location)
+       (%boxed-free type-number location))))
+
+
+;;;; Metaclass for boxed classes
 
+(eval-when (:compile-toplevel :load-toplevel :execute)
+  (defclass boxed-class (struct-class)
+    ())
 
-(deftype-method translate-to-alien boxed (type-spec boxed &optional weak-ref)
-  (if weak-ref
-      `(proxy-location ,boxed)
-    `(let ((boxed ,boxed))
-       (%boxed-copy
-       (find-type-number type-spec)
-       (proxy-location boxed)))))
+  (defmethod validate-superclass ((class boxed-class) (super standard-class))
+    (subtypep (class-name super) 'boxed)))
 
-(deftype-method unreference-alien boxed (type-spec c-struct)
-  `(%boxed-free ,(find-type-number type-spec) ,c-struct))
 
+(defmethod shared-initialize ((class boxed-class) names &key name gtype)
+  (declare (ignore names))
+  (call-next-method)
+  (let ((class-name (or name (class-name class))))
+    (unless (find-type-number class-name)
+      (register-type class-name 
+       (or (first gtype) (default-type-init-name class-name))))))
 
 (defbinding %boxed-copy () pointer
-  (type type-number)
+  (type-number type-number)
   (location pointer))
 
 (defbinding %boxed-free () nil
-  (type type-number)
+  (type-number type-number)
   (location pointer))
 
+(defmethod reference-foreign ((class boxed-class) location)
+  (%boxed-copy (find-type-number class) location))
 
-;;;; Metaclass for boxed classes
+(defmethod unreference-foreign ((class boxed-class) location)
+  (%boxed-free (find-type-number class) location))
 
-(eval-when (:compile-toplevel :load-toplevel :execute)
-  (defclass boxed-class (proxy-class)))
 
+;;;; 
 
-(defmethod shared-initialize ((class boxed-class) names
-                             &rest initargs
-                             &key name alien-name type-init)
-  (declare (ignore initargs names))
-  (call-next-method)
+(defun expand-boxed-type (type-number forward-p slots)
+  `(defclass ,(type-from-number type-number) (boxed)
+     ,(unless forward-p
+       slots)
+     (:metaclass boxed-class)
+     (:gtype ,(find-type-init-function type-number))))
+
+(register-derivable-type 'boxed "GBoxed" 'expand-boxed-type)
+
+;;;; Special boxed types
+
+;; (defclass gstring (boxed)
+;;   ()
+;;   (:metaclass boxed-class)
+;;   (:alien-name "GString"))
+
+;; (deftype-method translate-from-alien
+;;     gstring (type-spec location &optional weak-ref)
+;;   `(let ((location ,location))
+;;      (unless (null-pointer-p location)
+;;        (prog1
+;;        (c-call::%naturalize-c-string location)
+;;      ,(unless weak-ref
+;;         (unreference-alien type-spec location))))))
+
+;; (deftype-method translate-to-alien
+;;     gstring (type-spec string &optional weak-ref)
+;;   (declare (ignore weak-ref))
+;;   `(let ((string ,string))
+;;      ;; Always copy strings to prevent seg fault due to GC
+;;      (funcall
+;;       ',(proxy-class-copy (find-class type-spec))
+;;       ',type-spec
+;;       (make-pointer (1+ (kernel:get-lisp-obj-address string))))))
+
+;; (deftype-method cleanup-alien gstring (type-spec c-string &optional weak-ref)
+;;   (when weak-ref
+;;     (unreference-alien type-spec c-string)))
+
+
+
+;;;; NULL terminated vector of strings
 
-  (let* ((class-name (or name (class-name class)))
-        (type-number
-         (cond
-          ((and alien-name type-init)
-           (error
-            "Specify either :type-init or :alien-name for class ~A"
-            class-name))
-          (alien-name (type-number-from-alien-name (first alien-name)))
-          (type-init
-            (funcall (alien-function (first type-init) '(unsigned 32))))
-          (t
-           (or
-            (type-number-from-alien-name
-             (default-alien-type-name class-name) nil)
-            (funcall
-             (alien-function 
-              (default-alien-fname (format nil "~A_get_type" class-name))
-              '(unsigned 32))))))))
-    (setf (find-type-number class) type-number)))
-
-
-(defmethod validate-superclass
-    ((class boxed-class) (super pcl::standard-class))
-  (subtypep (class-name super) 'boxed))
-
-
-;;;; Initializing type numbers
-
-(setf (alien-type-name 'boxed) "GBoxed")
+(deftype strings () '(null-terminated-vector string))
+(register-type 'strings '|g_strv_get_type|)