type gf)
(let* ((name (slot-value slotd 'name))
(class (slot-value slotd '%class))
- (old-slotd (find-slot-definition class name))
+ (old-slotd (when (class-finalized-p class)
+ (find-slot-definition class name)))
(old-std-p (and old-slotd (slot-accessor-std-p old-slotd 'all))))
(multiple-value-bind (function std-p)
(if (eq *boot-state* 'complete)
(get-accessor-method-function gf type class slotd)
(get-optimized-std-accessor-method-function class slotd type))
(setf (slot-accessor-std-p slotd type) std-p)
- (setf (slot-accessor-function slotd type) function))
- (when (and old-slotd (not (eq old-std-p (slot-accessor-std-p slotd 'all))))
- (push (cons class name) *pv-table-cache-update-info*))))
+ (setf (slot-accessor-function slotd type) function))))
(defmethod slot-definition-allocation ((slotd structure-slot-definition))
:instance)
;;; In each case, we maintain one value which is a cons. The car is the list
;;; methods. The cdr is a list of the generic functions. The cdr is always
;;; computed lazily.
+
+;;; This needs to be used recursively, in case a non-trivial user
+;;; defined ADD/REMOVE-DIRECT-METHOD method ends up calling another
+;;; function using the same lock.
+(defvar *specializer-lock* (sb-thread::make-spinlock :name "Specializer lock"))
+
+(defmethod add-direct-method :around ((specializer specializer) method)
+ ;; All the actions done under this lock are done in an order
+ ;; that is safe to unwind at any point.
+ (sb-thread::with-recursive-spinlock (*specializer-lock*)
+ (call-next-method)))
+
+(defmethod remove-direct-method :around ((specializer specializer) method)
+ ;; All the actions done under this lock are done in an order
+ ;; that is safe to unwind at any point.
+ (sb-thread::with-recursive-spinlock (*specializer-lock*)
+ (call-next-method)))
+
(defmethod add-direct-method ((specializer class) (method method))
- (with-slots (direct-methods) specializer
- (setf (car direct-methods) (adjoin method (car direct-methods)) ;PUSH
- (cdr direct-methods) ()))
+ (let ((cell (slot-value specializer 'direct-methods)))
+ ;; We need to first smash the CDR, because a parallel read may
+ ;; be in progress, and because if an interrupt catches us we
+ ;; need to have a consistent state.
+ (setf (cdr cell) ()
+ (car cell) (adjoin method (car cell))))
method)
+
(defmethod remove-direct-method ((specializer class) (method method))
- (with-slots (direct-methods) specializer
- (setf (car direct-methods) (remove method (car direct-methods))
- (cdr direct-methods) ()))
+ (let ((cell (slot-value specializer 'direct-methods)))
+ ;; We need to first smash the CDR, because a parallel read may
+ ;; be in progress, and because if an interrupt catches us we
+ ;; need to have a consistent state.
+ (setf (cdr cell) ()
+ (car cell) (remove method (car cell))))
method)
(defmethod specializer-direct-methods ((specializer class))
(car direct-methods)))
(defmethod specializer-direct-generic-functions ((specializer class))
- (with-slots (direct-methods) specializer
- (or (cdr direct-methods)
- (setf (cdr direct-methods)
- (let (collect)
- (dolist (m (car direct-methods))
- ;; the old PCL code used COLLECTING-ONCE which used
- ;; #'EQ to check for newness
- (pushnew (method-generic-function m) collect :test #'eq))
- (nreverse collect))))))
+ (let ((cell (slot-value specializer 'direct-methods)))
+ ;; If an ADD/REMOVE-METHOD is in progress, no matter: either
+ ;; we behave as if we got just first or just after -- it's just
+ ;; for update that we need to lock.
+ (or (cdr cell)
+ (sb-thread::with-spinlock (*specializer-lock*)
+ (setf (cdr cell)
+ (let (collect)
+ (dolist (m (car cell))
+ ;; the old PCL code used COLLECTING-ONCE which used
+ ;; #'EQ to check for newness
+ (pushnew (method-generic-function m) collect :test #'eq))
+ (nreverse collect)))))))
\f
;;; This hash table is used to store the direct methods and direct generic
;;; functions of EQL specializers. Each value in the table is the cons.
(let* ((object (specializer-object specializer))
(table (specializer-method-table specializer))
(entry (gethash object table)))
+ ;; This table is shared between multiple specializers, but
+ ;; no worries as (at least for the time being) our hash-tables
+ ;; are thread safe.
(unless entry
- (setq entry
- (setf (gethash object table)
- (cons nil nil))))
- (setf (car entry) (adjoin method (car entry))
- (cdr entry) ())
+ (setf entry
+ (setf (gethash object table) (cons nil nil))))
+ ;; We need to first smash the CDR, because a parallel read may
+ ;; be in progress, and because if an interrupt catches us we
+ ;; need to have a consistent state.
+ (setf (cdr entry) ()
+ (car entry) (adjoin method (car entry)))
method))
(defmethod remove-direct-method ((specializer specializer-with-object)
(let* ((object (specializer-object specializer))
(entry (gethash object (specializer-method-table specializer))))
(when entry
- (setf (car entry) (remove method (car entry))
- (cdr entry) ()))
+ ;; We need to first smash the CDR, because a parallel read may
+ ;; be in progress, and because if an interrupt catches us we
+ ;; need to have a consistent state.
+ (setf (cdr entry) ()
+ (car entry) (remove method (car entry))))
method))
(defmethod specializer-direct-methods ((specializer specializer-with-object))
(entry (gethash object (specializer-method-table specializer))))
(when entry
(or (cdr entry)
- (setf (cdr entry)
- (let (collect)
- (dolist (m (car entry))
- (pushnew (method-generic-function m) collect :test #'eq))
- (nreverse collect)))))))
+ (sb-thread::with-spinlock (*specializer-lock*)
+ (setf (cdr entry)
+ (let (collect)
+ (dolist (m (car entry))
+ (pushnew (method-generic-function m) collect :test #'eq))
+ (nreverse collect))))))))
(defun map-specializers (function)
(map-all-classes (lambda (class)
((class std-class) slot-names &key
(direct-superclasses nil direct-superclasses-p)
(direct-slots nil direct-slots-p)
- (direct-default-initargs nil direct-default-initargs-p))
+ (direct-default-initargs nil direct-default-initargs-p)
+ definition-source)
(cond (direct-superclasses-p
(setq direct-superclasses
(or direct-superclasses
;; required by AMOP, "Reinitialization of Class Metaobjects"
(finalize-inheritance class)
(update-class class nil))
- (add-slot-accessors class direct-slots)
+ (add-slot-accessors class direct-slots definition-source)
(make-preliminary-layout class))
(defmethod shared-initialize :after ((class forward-referenced-class)
(setq %class-precedence-list (compute-class-precedence-list class))
(setq cpl-available-p t)
(add-direct-subclasses class direct-superclasses)
- (setf (slot-value class 'slots) (compute-slots class))))
+ (let ((slots (compute-slots class)))
+ (setf (slot-value class 'slots) slots)
+ (setf (layout-slot-table wrapper) (make-slot-table class slots)))))
;; Comment from Gerd's PCL, 2003-05-15:
;;
;; We don't ADD-SLOT-ACCESSORS here because we don't want to
;; remove slot accessors but never put them back. I've added a
;; REINITIALIZE-INSTANCE :AFTER (CONDITION-CLASS) method, but what
;; was meant to happen? -- CSR, 2005-11-18
- (update-pv-table-cache-info class))
+ )
(defmethod direct-slot-definition-class ((class condition-class)
&rest initargs)
((class structure-class) slot-names &key
(direct-superclasses nil direct-superclasses-p)
(direct-slots nil direct-slots-p)
- direct-default-initargs)
+ direct-default-initargs
+ definition-source)
(declare (ignore slot-names direct-default-initargs))
(if direct-superclasses-p
(setf (slot-value class 'direct-superclasses)
(setf (slot-value class '%class-precedence-list)
(compute-class-precedence-list class))
(setf (slot-value class 'cpl-available-p) t)
- (setf (slot-value class 'slots) (compute-slots class))
- (let ((lclass (find-classoid (class-name class))))
- (setf (classoid-pcl-class lclass) class)
- (setf (slot-value class 'wrapper) (classoid-layout lclass)))
+ (let ((slots (compute-slots class)))
+ (setf (slot-value class 'slots) slots)
+ (let* ((lclass (find-classoid (class-name class)))
+ (layout (classoid-layout lclass)))
+ (setf (classoid-pcl-class lclass) class)
+ (setf (slot-value class 'wrapper) layout)
+ (setf (layout-slot-table layout) (make-slot-table class slots))))
(setf (slot-value class 'finalized-p) t)
- (update-pv-table-cache-info class)
- (add-slot-accessors class direct-slots)))
+ (add-slot-accessors class direct-slots definition-source)))
(defmethod direct-slot-definition-class ((class structure-class) &rest initargs)
(declare (ignore initargs))
(defmethod finalize-inheritance ((class structure-class))
nil) ; always finalized
\f
-(defun add-slot-accessors (class dslotds)
- (fix-slot-accessors class dslotds 'add))
+(defun add-slot-accessors (class dslotds &optional source-location)
+ (fix-slot-accessors class dslotds 'add source-location))
(defun remove-slot-accessors (class dslotds)
(fix-slot-accessors class dslotds 'remove))
-(defun fix-slot-accessors (class dslotds add/remove)
+(defun fix-slot-accessors (class dslotds add/remove &optional source-location)
(flet ((fix (gfspec name r/w doc)
(let ((gf (cond ((eq add/remove 'add)
(or (find-generic-function gfspec nil)
(when gf
(case r/w
(r (if (eq add/remove 'add)
- (add-reader-method class gf name doc)
+ (add-reader-method class gf name doc source-location)
(remove-reader-method class gf)))
(w (if (eq add/remove 'add)
- (add-writer-method class gf name doc)
+ (add-writer-method class gf name doc source-location)
(remove-writer-method class gf))))))))
(dolist (dslotd dslotds)
(let ((slot-name (slot-definition-name dslotd))
(make-instances-obsolete class)
(class-wrapper class)))))
- (with-slots (wrapper slots) class
- (update-lisp-class-layout class nwrapper)
- (setf slots eslotds
- (wrapper-instance-slots-layout nwrapper) nlayout
- (wrapper-class-slots nwrapper) nwrapper-class-slots
- (layout-length nwrapper) nslots
- wrapper nwrapper)
- (do* ((slots (slot-value class 'slots) (cdr slots))
- (dupes nil))
- ((null slots)
- (when dupes
- (style-warn
- "~@<slot names with the same SYMBOL-NAME but ~
+ (update-lisp-class-layout class nwrapper)
+ (setf (slot-value class 'slots) eslotds
+ (wrapper-slot-table nwrapper) (make-slot-table class eslotds)
+ (wrapper-instance-slots-layout nwrapper) nlayout
+ (wrapper-class-slots nwrapper) nwrapper-class-slots
+ (wrapper-length nwrapper) nslots
+ (slot-value class 'wrapper) nwrapper)
+ (do* ((slots (slot-value class 'slots) (cdr slots))
+ (dupes nil))
+ ((null slots)
+ (when dupes
+ (style-warn
+ "~@<slot names with the same SYMBOL-NAME but ~
different SYMBOL-PACKAGE (possible package problem) ~
for class ~S:~4I~@:_~<~@{~S~^~:@_~}~:>~@:>"
- class dupes)))
- (let* ((slot (car slots))
- (oslots (remove (slot-definition-name slot) (cdr slots)
- :test #'string/=
- :key #'slot-definition-name)))
- (when oslots
- (pushnew (cons (slot-definition-name slot)
- (mapcar #'slot-definition-name oslots))
- dupes
- :test #'string= :key #'car)))))
+ class dupes)))
+ (let* ((slot (car slots))
+ (oslots (remove (slot-definition-name slot) (cdr slots)
+ :test #'string/=
+ :key #'slot-definition-name)))
+ (when oslots
+ (pushnew (cons (slot-definition-name slot)
+ (mapcar #'slot-definition-name oslots))
+ dupes
+ :test #'string= :key #'car))))
(setf (slot-value class 'finalized-p) t)
(unless (eq owrapper nwrapper)
- (update-pv-table-cache-info class)
(maybe-update-standard-class-locations class)))))
(defun compute-class-slots (eslotds)
(declare (ignore direct-slot initargs))
(find-class 'standard-reader-method))
-(defmethod add-reader-method ((class slot-class) generic-function slot-name slot-documentation)
+(defmethod add-reader-method ((class slot-class) generic-function slot-name slot-documentation source-location)
(add-method generic-function
(make-a-method 'standard-reader-method
()
(or slot-documentation "automatically generated reader method")
:slot-name slot-name
:object-class class
- :method-class-function #'reader-method-class)))
+ :method-class-function #'reader-method-class
+ :definition-source source-location)))
(defmethod writer-method-class ((class slot-class) direct-slot &rest initargs)
(declare (ignore direct-slot initargs))
(find-class 'standard-writer-method))
-(defmethod add-writer-method ((class slot-class) generic-function slot-name slot-documentation)
+(defmethod add-writer-method ((class slot-class) generic-function slot-name slot-documentation source-location)
(add-method generic-function
(make-a-method 'standard-writer-method
()
(or slot-documentation "automatically generated writer method")
:slot-name slot-name
:object-class class
- :method-class-function #'writer-method-class)))
+ :method-class-function #'writer-method-class
+ :definition-source source-location)))
-(defmethod add-boundp-method ((class slot-class) generic-function slot-name slot-documentation)
+(defmethod add-boundp-method ((class slot-class) generic-function slot-name slot-documentation source-location)
(add-method generic-function
(make-a-method (constantly (find-class 'standard-boundp-method))
class
(list class)
(make-boundp-method-function class slot-name)
(or slot-documentation "automatically generated boundp method")
- slot-name)))
+ :slot-name slot-name
+ :definition-source source-location)))
(defmethod remove-reader-method ((class slot-class) generic-function)
(let ((method (get-method generic-function () (list class) nil)))
(wrapper-instance-slots-layout owrapper))
(setf (wrapper-class-slots nwrapper)
(wrapper-class-slots owrapper))
+ (setf (wrapper-slot-table nwrapper)
+ (wrapper-slot-table owrapper))
(with-pcl-lock
(update-lisp-class-layout class nwrapper)
(setf (slot-value class 'wrapper) nwrapper)
(wrapper-instance-slots-layout owrapper))
(setf (wrapper-class-slots nwrapper)
(wrapper-class-slots owrapper))
+ (setf (wrapper-slot-table nwrapper)
+ (wrapper-slot-table owrapper))
(with-pcl-lock
(update-lisp-class-layout class nwrapper)
(setf (slot-value class 'wrapper) nwrapper)
(type-of (obsolete-structure-datum condition))))))
(defun obsolete-instance-trap (owrapper nwrapper instance)
- (if (not (pcl-instance-p instance))
+ (if (not (layout-for-std-class-p owrapper))
(if *in-obsolete-instance-trap*
*the-wrapper-of-structure-object*
(let ((*in-obsolete-instance-trap* t))