X-Git-Url: https://git.distorted.org.uk/~mdw/clg/blobdiff_plain/bf54963e7c4c265eff31ffecb894f87f6a30ebaa..953030a3519ecb9d66d9f55d46f8c8b6906094ed:/glib/glib.lisp

diff --git a/glib/glib.lisp b/glib/glib.lisp
index 7931877..e8f6f47 100644
--- a/glib/glib.lisp
+++ b/glib/glib.lisp
@@ -20,13 +20,22 @@
 ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-;; $Id: glib.lisp,v 1.39 2006-12-21 16:38:19 espen Exp $
+;; $Id: glib.lisp,v 1.42 2007-10-17 14:30:41 espen Exp $
 
 
 (in-package "GLIB")
 
 (use-prefix "g")
 
+#-sb-thread
+(progn
+  (defun make-mutex ()
+    nil)
+  
+  (defmacro with-mutex ((mutex) &body body)
+    (declare (ignore mutex))
+    `(progn ,@body)))
+
 
 ;;;; Memory management
 
@@ -43,43 +52,80 @@
 (setf *memory-allocator* #'%allocate-memory)
 (setf *memory-deallocator* #'%deallocate-memory)
 
-;;;; User data mechanism
+(defbinding (reallocate-memory "g_realloc") () pointer
+  (address pointer)
+  (size unsigned-long))
+
+(deftype gsize () 'unsigned-int)
+
+(defbinding (slice-alloc "g_slice_alloc0") () pointer
+  (block-size gsize))
 
+;;;; User data is a mechanism to store references to lisp objects in
+;;;; foreign code
+
+(defvar *user-data-lock* (make-mutex))
 (defvar *user-data* (make-hash-table))
-(defvar *user-data-count* 0)
+(defvar *user-data-next-id* 1)
 
 (defun register-user-data (object &optional destroy-function)
   (check-type destroy-function (or null symbol function))
-  (incf *user-data-count*)
-  (setf
-   (gethash *user-data-count* *user-data*)
-   (cons object destroy-function))
-  *user-data-count*)
+  (with-mutex (*user-data-lock*)
+    (setf
+     (gethash *user-data-next-id* *user-data*)
+     (cons object destroy-function))
+    (1- (incf *user-data-next-id*))))
 
 (defun find-user-data (id)
   (check-type id fixnum)
-  (multiple-value-bind (user-data p) (gethash id *user-data*)
-    (values (car user-data) p)))
+  (with-mutex (*user-data-lock*)
+    (multiple-value-bind (user-data p) (gethash id *user-data*)
+      (values (car user-data) p))))
 
 (defun user-data-exists-p (id)
   (nth-value 1 (find-user-data id)))
 
 (defun update-user-data (id object)
   (check-type id fixnum)
-  (multiple-value-bind (user-data exists-p) (gethash id *user-data*)
-    (cond
-     ((not exists-p) (error "User data id ~A does not exist" id))
-     (t 
-      (when (cdr user-data)
-	(funcall (cdr user-data) (car user-data)))
-      (setf (car user-data) object)))))
+  (with-mutex (*user-data-lock*)
+    (multiple-value-bind (user-data exists-p) (gethash id *user-data*)
+      (cond
+       ((not exists-p) (error "User data id ~A does not exist" id))
+       (t 
+	(when (cdr user-data)
+	  (funcall (cdr user-data) (car user-data)))
+	(setf (car user-data) object))))))
 
 (defun destroy-user-data (id)
   (check-type id fixnum)
-  (let ((user-data (gethash id *user-data*)))
-    (when (cdr user-data)
-      (funcall (cdr user-data) (car user-data))))
-  (remhash id *user-data*))
+  (with-mutex (*user-data-lock*)
+    (multiple-value-bind (user-data exists-p) (gethash id *user-data*)
+      (cond
+;       ((not exists-p) (error "User data id ~A does not exist" id))
+       (t
+	(when (cdr user-data)
+	  (funcall (cdr user-data) (car user-data)))
+	(remhash id *user-data*))))))
+
+(defun take-user-data (id)
+  (check-type id fixnum)
+  (multiple-value-bind (user-data exists-p) (gethash id *user-data*)
+    (cond
+      ((not exists-p) (error "User data id ~A does not exist" id))
+      (t 
+	(when (cdr user-data)
+	  (funcall (cdr user-data) (car user-data)))
+	(remhash id *user-data*)
+	(car user-data)))))
+
+(defmacro with-user-data ((var object) &body body)
+  `(let ((,var (register-user-data ,object)))
+     (unwind-protect
+	  ,@body
+       (destroy-user-data ,var))))
+
+
+(deftype user-data-id () 'pointer-data)
 
 
 ;;;; Quarks
@@ -165,6 +211,12 @@
   (declare (ignore type))
   (alien-type 'pointer))
 
+(define-type-method argument-type ((type glist))
+  'list)
+
+(define-type-method return-type ((type glist))
+  'list)
+
 (define-type-method size-of ((type glist) &key inlined)
   (assert-not-inlined type inlined)
   (size-of 'pointer))
@@ -318,6 +370,12 @@
   (declare (ignore type))
   (alien-type 'pointer))
 
+(define-type-method argument-type ((type gslist))
+  'list)
+
+(define-type-method return-type ((type gslist))
+  'list)
+
 (define-type-method size-of ((type gslist) &key inlined)
   (assert-not-inlined type inlined)
   (size-of 'pointer))