Objects can now be cached with strong references

[clg] / glib / proxy.lisp

diff --git a/glib/proxy.lisp b/glib/proxy.lisp
index 6ad8b907363828c28ad0e4cfac74fa2fb02b30dd..4292fe6e2646f389631f637750354b370b1a9fe9 100644 (file)
--- a/glib/proxy.lisp
+++ b/glib/proxy.lisp
@@ -1,21 +1,26 @@
-;; Common Lisp bindings for GTK+ v2.0
-;; Copyright (C) 2000 Espen S. Johnsen <esj@stud.cs.uit.no>
+;; Common Lisp bindings for GTK+ v2.x
+;; Copyright 2000-2005 Espen S. Johnsen <espen@users.sf.net>
 ;;
-;; This library is free software; you can redistribute it and/or
-;; modify it under the terms of the GNU Lesser General Public
-;; License as published by the Free Software Foundation; either
-;; version 2 of the License, or (at your option) any later version.
+;; Permission is hereby granted, free of charge, to any person obtaining
+;; a copy of this software and associated documentation files (the
+;; "Software"), to deal in the Software without restriction, including
+;; without limitation the rights to use, copy, modify, merge, publish,
+;; distribute, sublicense, and/or sell copies of the Software, and to
+;; permit persons to whom the Software is furnished to do so, subject to
+;; the following conditions:
 ;;
-;; This library is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-;; Lesser General Public License for more details.
+;; The above copyright notice and this permission notice shall be
+;; included in all copies or substantial portions of the Software.
 ;;
-;; You should have received a copy of the GNU Lesser General Public
-;; License along with this library; if not, write to the Free Software
-;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+;; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+;; CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+;; 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 1.19 2005-02-03 23:09:04 espen Exp $
+;; $Id: proxy.lisp,v 1.22 2006-02-02 18:37:46 espen Exp $
 
 (in-package "GLIB")
 
@@ -221,15 +226,19 @@ (defmethod validate-superclass
 (internal *instance-cache*)
 (defvar *instance-cache* (make-hash-table :test #'eql))
 
-(defun cache-instance (instance)
+(defun cache-instance (instance &optional (weak-ref t))
   (setf
    (gethash (sap-int (proxy-location instance)) *instance-cache*)
-   (make-weak-pointer instance)))
+   (if weak-ref
+       (make-weak-pointer instance)
+     instance)))
 
 (defun find-cached-instance (location)
   (let ((ref (gethash (sap-int location) *instance-cache*)))
     (when ref
-      (weak-pointer-value ref))))
+      (if (weak-pointer-p ref)
+         (weak-pointer-value ref)
+       ref))))
 
 (defun instance-cached-p (location)
   (gethash (sap-int location) *instance-cache*))
@@ -238,11 +247,11 @@ (defun remove-cached-instance (location)
   (remhash (sap-int location) *instance-cache*))
 
 ;; For debuging
-(defun cached-instances ()
+(defun list-cached-instances ()
   (let ((instances ()))
     (maphash #'(lambda (location ref)
                 (declare (ignore location))
-                (push (weak-pointer-value ref) instances))
+                (push ref instances))
             *instance-cache*)
     instances))
                        
@@ -253,7 +262,6 @@ (defun cached-instances ()
 (defclass proxy ()
   ((location :reader proxy-location :type system-area-pointer)))
 
-(defgeneric initialize-proxy (object &rest initargs))
 (defgeneric instance-finalizer (object))
 (defgeneric reference-foreign (class location))
 (defgeneric unreference-foreign (class location))
@@ -533,3 +541,24 @@ (defmethod reference-foreign ((class static-struct-class) location)
 (defmethod unreference-foreign ((class static-struct-class) location)
   (declare (ignore class location))
   nil)
+
+
+;;; Pseudo type for structs which are inlined in other objects
+
+(defmethod size-of ((type (eql 'inlined)) &rest args)
+  (declare (ignore type))
+  (proxy-instance-size (first args)))
+
+(defmethod reader-function ((type (eql 'inlined)) &rest args)
+  (declare (ignore type))
+  (destructuring-bind (class) args
+    #'(lambda (location &optional (offset 0))
+       (ensure-proxy-instance class 
+        (reference-foreign class (sap+ location offset))))))
+
+(defmethod destroy-function ((type (eql 'inlined)) &rest args)
+  (declare (ignore args))
+  #'(lambda (location &optional (offset 0))
+      (declare (ignore location offset))))
+
+(export 'inlined)