;; 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: glib.lisp,v 1.22 2004-12-26 11:40:58 espen Exp $
+;; $Id: glib.lisp,v 1.28 2005-04-17 21:44:27 espen Exp $
(in-package "GLIB")
;; (declare (ignore address)))
(defun copy-memory (from length &optional (to (allocate-memory length)))
- (kernel:system-area-copy from 0 to 0 (* 8 length))
+ #+cmu(system-area-copy from 0 to 0 (* 8 length))
+ #+sbcl(system-area-ub8-copy from 0 to 0 length)
to)
(internal *user-data* *user-data-count*)
-(declaim (fixnum *user-data-count*))
-
(defvar *user-data* (make-hash-table))
(defvar *user-data-count* 0)
(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)))))
+
(defun destroy-user-data (id)
(check-type id fixnum)
(let ((user-data (gethash id *user-data*)))
;;;; Quarks
-(internal *quark-counter* *quark-from-object* *quark-to-object*)
-
(deftype quark () 'unsigned)
-;(defbinding %quark-get-reserved () quark)
-
(defbinding %quark-from-string () quark
(string string))
-(defvar *quark-counter* 0)
-
-(defun %quark-get-reserved ()
- ;; The string is just a dummy
- (%quark-from-string (format nil "#@£$%&-quark-~D" (incf *quark-counter*))))
-
-(defvar *quark-from-object* (make-hash-table))
-(defvar *quark-to-object* (make-hash-table))
-
-(defun quark-from-object (object &key (test #'eq))
- (let ((hash-code (sxhash object)))
- (or
- (assoc-ref object (gethash hash-code *quark-from-object*) :test test)
- (let ((quark (%quark-get-reserved)))
- (setf
- (gethash hash-code *quark-from-object*)
- (append
- (gethash hash-code *quark-from-object*)
- (list (cons object quark))))
- (setf (gethash quark *quark-to-object*) object)
- quark))))
-
-(defun quark-to-object (quark)
- (gethash quark *quark-to-object*))
-
-(defun remove-quark (quark)
- (let* ((object (gethash quark *quark-to-object*))
- (hash-code (sxhash object)))
- (remhash quark *quark-to-object*)
- (unless (setf
- (gethash hash-code *quark-from-object*)
- (assoc-delete object (gethash hash-code *quark-from-object*)))
- (remhash hash-code *quark-from-object*))))
+(defun quark-intern (object)
+ (etypecase object
+ (quark object)
+ (string (%quark-from-string object))
+ (symbol (%quark-from-string (format nil "clg-~A:~A"
+ (package-name (symbol-package object))
+ object)))))
+(defbinding quark-to-string () (copy-of string)
+ (quark quark))
;;;; Linked list (GList)
(destructuring-bind (element-type) args
`(map-glist 'list #'identity ,gslist ',element-type)))
-(defmethod from-alien-function ((type (eql 'gslist)) &rest args)
+(defmethod copy-from-alien-function ((type (eql 'gslist)) &rest args)
(declare (ignore type))
(destructuring-bind (element-type) args
#'(lambda (gslist)
(error "Can't use vector of variable size as return type")
`(let ((c-vector ,c-vector))
(prog1
- (map-c-vector 'vector #'identity ',element-type ,length c-vector)
+ (map-c-vector 'vector #'identity c-vector ',element-type ,length)
(destroy-c-vector c-vector ',element-type ,length))))))
(defmethod copy-from-alien-form (c-vector (type (eql 'vector)) &rest args)
(destructuring-bind (element-type &optional (length '*)) args
(if (eq length '*)
(error "Can't use vector of variable size as return type")
- `(map-c-vector 'vector #'identity ',element-type ',length ,c-vector))))
+ `(map-c-vector 'vector #'identity ,c-vector ',element-type ',length))))
(defmethod cleanup-form (location (type (eql 'vector)) &rest args)
(declare (ignore type))
(destroy-c-vector
(sap-ref-sap location offset) element-type length)
(setf (sap-ref-sap location offset) (make-pointer 0)))))))
+
+
+;;;; Null terminated vector
+
+(defun make-0-vector (type content &optional location)
+ (let* ((size-of-type (size-of type))
+ (location (or
+ location
+ (allocate-memory (* size-of-type (1+ (length content))))))
+ (writer (writer-function type)))
+ (etypecase content
+ (vector
+ (loop
+ for element across content
+ as offset = 0 then (+ offset size-of-type)
+ do (funcall writer element location offset)
+ finally (setf (sap-ref-sap location offset) (make-pointer 0))))
+ (list
+ (loop
+ for element in content
+ as offset = 0 then (+ offset size-of-type)
+ do (funcall writer element location offset)
+ finally (setf (sap-ref-sap location (+ offset size-of-type)) (make-pointer 0)))))
+ location))
+
+
+(defun map-0-vector (seqtype function location element-type)
+ (let ((reader (reader-function element-type))
+ (size-of-element (size-of element-type)))
+ (case seqtype
+ ((nil)
+ (loop
+ as offset = 0 then (+ offset size-of-element)
+ until (null-pointer-p (sap-ref-sap location offset))
+ do (funcall function (funcall reader location offset))))
+ (list
+ (loop
+ as offset = 0 then (+ offset size-of-element)
+ until (null-pointer-p (sap-ref-sap location offset))
+ collect (funcall function (funcall reader location offset))))
+ (t
+ (coerce
+ (loop
+ as offset = 0 then (+ offset size-of-element)
+ until (null-pointer-p (sap-ref-sap location offset))
+ collect (funcall function (funcall reader location offset)))
+ seqtype)))))
+
+
+(defun destroy-0-vector (location element-type)
+ (loop
+ with destroy = (destroy-function element-type)
+ with element-size = (size-of element-type)
+ as offset = 0 then (+ offset element-size)
+ until (null-pointer-p (sap-ref-sap location offset))
+ do (funcall destroy location offset))
+ (deallocate-memory location))
+
+
+(defmethod alien-type ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type args))
+ (alien-type 'pointer))
+
+(defmethod size-of ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type args))
+ (alien-type 'pointer))
+
+(defmethod writer-function ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ (unless (eq (alien-type element-type) (alien-type 'pointer))
+ (error "Elements in null-terminated vectors need to be of pointer types"))
+ #'(lambda (vector location &optional (offset 0))
+ (setf
+ (sap-ref-sap location offset)
+ (make-0-vector element-type vector)))))
+
+(defmethod reader-function ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ (unless (eq (alien-type element-type) (alien-type 'pointer))
+ (error "Elements in null-terminated vectors need to be of pointer types"))
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (map-0-vector 'vector #'identity (sap-ref-sap location offset)
+ element-type)))))
+
+(defmethod destroy-function ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ (unless (eq (alien-type element-type) (alien-type 'pointer))
+ (error "Elements in null-terminated vectors need to be of pointer types"))
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (destroy-0-vector
+ (sap-ref-sap location offset) element-type)
+ (setf (sap-ref-sap location offset) (make-pointer 0))))))
+
+(defmethod unbound-value ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type args))
+ (values t nil))
~mdw / clg / blobdiff