(in-package "SB-PCL")
\f
(eval-when (:compile-toplevel :load-toplevel :execute)
-(defvar *optimize-speed* '(optimize (speed 3) (safety 0)))
+(defvar *optimize-speed*
+ '(optimize (speed 3) (safety 0)))
) ; EVAL-WHEN
(defmacro dotimes-fixnum ((var count &optional (result nil)) &body body)
(declare (fixnum ,var))
,@body))
\f
+;;;; early definition of WRAPPER
+;;;;
+;;;; Most WRAPPER stuff is defined later, but the DEFSTRUCT itself
+;;;; is here early so that things like (TYPEP .. 'WRAPPER) can be
+;;;; compiled efficiently.
+
+;;; Note that for SBCL, as for CMU CL, the WRAPPER of a built-in or
+;;; structure class will be some other kind of SB-KERNEL:LAYOUT, but
+;;; this shouldn't matter, since the only two slots that WRAPPER adds
+;;; are meaningless in those cases.
+(defstruct (wrapper
+ (:include layout
+ ;; KLUDGE: In CMU CL, the initialization default
+ ;; for LAYOUT-INVALID was NIL. In SBCL, that has
+ ;; changed to :UNINITIALIZED, but PCL code might
+ ;; still expect NIL for the initialization
+ ;; default of WRAPPER-INVALID. Instead of trying
+ ;; to find out, I just overrode the LAYOUT
+ ;; default here. -- WHN 19991204
+ (invalid nil))
+ (:conc-name %wrapper-)
+ (:constructor make-wrapper-internal)
+ (:copier nil))
+ (instance-slots-layout nil :type list)
+ (class-slots nil :type list))
+#-sb-fluid (declaim (sb-ext:freeze-type wrapper))
+\f
;;;; PCL's view of funcallable instances
-(defstruct (pcl-funcallable-instance
- (:alternate-metaclass sb-kernel:funcallable-instance
- sb-kernel:random-pcl-class
- sb-kernel:make-random-pcl-class)
- (:type sb-kernel:funcallable-structure)
- (:constructor allocate-funcallable-instance-1 ())
- (:copier nil)
- (:conc-name nil))
- ;; Note: The PCL wrapper is in the layout slot.
-
- ;; PCL data vector.
- (pcl-funcallable-instance-slots nil)
- ;; The debug-name for this function.
- (funcallable-instance-name nil))
+(!defstruct-with-alternate-metaclass pcl-funcallable-instance
+ ;; KLUDGE: Note that neither of these slots is ever accessed by its
+ ;; accessor name as of sbcl-0.pre7.63. Presumably everything works
+ ;; by puns based on absolute locations. Fun fun fun.. -- WHN 2001-10-30
+ :slot-names (clos-slots name hash-code)
+ :boa-constructor %make-pcl-funcallable-instance
+ :superclass-name funcallable-instance
+ :metaclass-name random-pcl-classoid
+ :metaclass-constructor make-random-pcl-classoid
+ :dd-type funcallable-structure
+ ;; Only internal implementation code will access these, and these
+ ;; accesses (slot readers in particular) could easily be a
+ ;; bottleneck, so it seems reasonable to suppress runtime type
+ ;; checks.
+ ;;
+ ;; (Except note KLUDGE above that these accessors aren't used at all
+ ;; (!) as of sbcl-0.pre7.63, so for now it's academic.)
+ :runtime-type-checks-p nil)
(import 'sb-kernel:funcallable-instance-p)
-;;; This "works" on non-PCL FINs, which allows us to weaken
-;;; FUNCALLABLE-INSTANCE-P to return true for all FINs. This is also
-;;; necessary for bootstrapping to work, since the layouts for early
-;;; GFs are not initially initialized.
-(defmacro funcallable-instance-data-1 (fin slot)
- (ecase (eval slot)
- (wrapper `(sb-kernel:%funcallable-instance-layout ,fin))
- (slots `(sb-kernel:%funcallable-instance-info ,fin 0))))
-
-;;; FIXME: Now that we no longer try to make our CLOS implementation
-;;; portable to other implementations of Common Lisp, all the
-;;; funcallable instance wrapper logic here can go away in favor
-;;; of direct calls to native SBCL funcallable instance operations.
(defun set-funcallable-instance-function (fin new-value)
(declare (type function new-value))
(aver (funcallable-instance-p fin))
- (setf (sb-kernel:funcallable-instance-function fin) new-value))
+ (setf (funcallable-instance-fun fin) new-value))
(defmacro fsc-instance-p (fin)
`(funcallable-instance-p ,fin))
-(defmacro fsc-instance-class (fin)
- `(wrapper-class (funcallable-instance-data-1 ,fin 'wrapper)))
(defmacro fsc-instance-wrapper (fin)
- `(funcallable-instance-data-1 ,fin 'wrapper))
+ `(%funcallable-instance-layout ,fin))
+;;; FIXME: This seems to bear no relation at all to the CLOS-SLOTS
+;;; slot in the FUNCALLABLE-INSTANCE structure, above, which
+;;; (bizarrely) seems to be set to the NAME of the
+;;; FUNCALLABLE-INSTANCE. At least, the index 1 seems to return the
+;;; NAME, and the index 2 NIL. Weird. -- CSR, 2002-11-07
(defmacro fsc-instance-slots (fin)
- `(funcallable-instance-data-1 ,fin 'slots))
+ `(%funcallable-instance-info ,fin 0))
+(defmacro fsc-instance-hash (fin)
+ `(%funcallable-instance-info ,fin 3))
\f
(declaim (inline clos-slots-ref (setf clos-slots-ref)))
(declaim (ftype (function (simple-vector index) t) clos-slots-ref))
;;; few uses of (OR STD-INSTANCE-P FSC-INSTANCE-P) are changed to
;;; PCL-INSTANCE-P.
(defmacro std-instance-p (x)
- `(sb-kernel:%instancep ,x))
+ `(%instancep ,x))
;; a temporary definition used for debugging the bootstrap
#+sb-show
;;; NEW-NAME. Note that NEW-NAME is sometimes a list. Some lisps
;;; get the upset in the tummy when they start thinking about
;;; functions which have lists as names. To deal with that there is
-;;; SET-FUNCTION-NAME-INTERN which takes a list spec for a function
+;;; SET-FUN-NAME-INTERN which takes a list spec for a function
;;; name and turns it into a symbol if need be.
;;;
-;;; When given a funcallable instance, SET-FUNCTION-NAME *must*
-;;; side-effect that FIN to give it the name. When given any other
-;;; kind of function SET-FUNCTION-NAME is allowed to return a new
-;;; function which is "the same" except that it has the name.
+;;; When given a funcallable instance, SET-FUN-NAME *must* side-effect
+;;; that FIN to give it the name. When given any other kind of
+;;; function SET-FUN-NAME is allowed to return a new function which is
+;;; "the same" except that it has the name.
;;;
-;;; In all cases, SET-FUNCTION-NAME must return the new (or same)
+;;; In all cases, SET-FUN-NAME must return the new (or same)
;;; function. (Unlike other functions to set stuff, it does not return
;;; the new value.)
-;;;
-;;; FIXME: A similar operation is done in
-;;; TRY-TO-RENAME-INTERPRETED-FUNCTION-AS-MACRO. The code should be
-;;; shared.
-(defun set-function-name (fcn new-name)
+(defun set-fun-name (fcn new-name)
#+sb-doc
"Set the name of a compiled function object. Return the function."
(declare (special *boot-state* *the-class-standard-generic-function*))
(cond ((symbolp fcn)
- (set-function-name (symbol-function fcn) new-name))
+ (set-fun-name (symbol-function fcn) new-name))
((funcallable-instance-p fcn)
(if (if (eq *boot-state* 'complete)
(typep fcn 'generic-function)
(eq (class-of fcn) *the-class-standard-generic-function*))
- (setf (sb-kernel:%funcallable-instance-info fcn 1) new-name)
- (etypecase fcn
- (sb-kernel:byte-closure
- (set-function-name (sb-kernel:byte-closure-function fcn)
- new-name))
- (sb-kernel:byte-function
- (setf (sb-kernel:byte-function-name fcn) new-name))
- #+sb-interpreter
- (sb-eval:interpreted-function
- (setf (sb-eval:interpreted-function-name fcn) new-name))))
+ (setf (%funcallable-instance-info fcn 1) new-name)
+ (bug "unanticipated function type"))
fcn)
(t
;; pw-- This seems wrong and causes trouble. Tests show
;; it loses some info of potential hacking value. So,
;; lets not do this...
#+nil
- (let ((header (sb-kernel:%closure-function fcn)))
- (setf (sb-kernel:%function-name header) new-name))
+ (let ((header (%closure-fun fcn)))
+ (setf (%simple-fun-name header) new-name))
;; XXX Maybe add better scheme here someday.
fcn)))
-(defun intern-function-name (name)
+(defun intern-fun-name (name)
(cond ((symbolp name) name)
((listp name)
(intern (let ((*package* *pcl-package*)
(defmacro precompile-random-code-segments (&optional system)
`(progn
(eval-when (:compile-toplevel)
- (update-dispatch-dfuns)
- (compile-iis-functions nil))
+ (update-dispatch-dfuns))
(precompile-function-generators ,system)
(precompile-dfun-constructors ,system)
- (precompile-iis-functions ,system)
- (eval-when (:load-toplevel)
- (compile-iis-functions t))))
+ (precompile-ctors)))
\f
;;; This definition is for interpreted code.
(defun pcl-instance-p (x)
- (typep (sb-kernel:layout-of x) 'wrapper))
+ (typep (layout-of x) 'wrapper))
-;;; We define this as STANDARD-INSTANCE, since we're going to clobber
-;;; the layout with some standard-instance layout as soon as we make
-;;; it, and we want the accessor to still be type-correct.
+;;; CMU CL comment:
+;;; We define this as STANDARD-INSTANCE, since we're going to
+;;; clobber the layout with some standard-instance layout as soon as
+;;; we make it, and we want the accessor to still be type-correct.
+#|
(defstruct (standard-instance
(:predicate nil)
(:constructor %%allocate-instance--class ())
(:copier nil)
- (:alternate-metaclass sb-kernel:instance cl:standard-class
- sb-kernel:make-standard-class))
+ (:alternate-metaclass instance
+ cl:standard-class
+ make-standard-class))
(slots nil))
+|#
+(!defstruct-with-alternate-metaclass standard-instance
+ :slot-names (slots hash-code)
+ :boa-constructor %make-standard-instance
+ :superclass-name instance
+ :metaclass-name standard-classoid
+ :metaclass-constructor make-standard-classoid
+ :dd-type structure
+ :runtime-type-checks-p nil)
;;; Both of these operations "work" on structures, which allows the above
;;; weakening of STD-INSTANCE-P.
-(defmacro std-instance-slots (x) `(sb-kernel:%instance-ref ,x 1))
-(defmacro std-instance-wrapper (x) `(sb-kernel:%instance-layout ,x))
+(defmacro std-instance-slots (x) `(%instance-ref ,x 1))
+(defmacro std-instance-wrapper (x) `(%instance-layout ,x))
+;;; KLUDGE: This one doesn't "work" on structures. However, we
+;;; ensure, in SXHASH and friends, never to call it on structures.
+(defmacro std-instance-hash (x) `(%instance-ref ,x 2))
;;; FIXME: These functions are called every place we do a
;;; CALL-NEXT-METHOD, and probably other places too. It's likely worth
(std-instance-slots instance)
(fsc-instance-slots instance)))
(defun get-slots-or-nil (instance)
+ ;; Suppress a code-deletion note. FIXME: doing the FIXME above,
+ ;; integrating PCL more with the compiler, would remove the need for
+ ;; this icky stuff.
+ (declare (optimize (inhibit-warnings 3)))
(when (pcl-instance-p instance)
(get-slots instance)))
-(defmacro built-in-or-structure-wrapper (x) `(sb-kernel:layout-of ,x))
+(defmacro built-in-or-structure-wrapper (x) `(layout-of ,x))
(defmacro get-wrapper (inst)
(once-only ((wrapper `(wrapper-of ,inst)))
,wrapper
nil)))
\f
+;;;; support for useful hashing of PCL instances
+(let ((hash-code 0))
+ (declare (fixnum hash-code))
+ (defun get-instance-hash-code ()
+ (if (< hash-code most-positive-fixnum)
+ (incf hash-code)
+ (setq hash-code 0))))
+
+(defun sb-impl::sxhash-instance (x)
+ (cond
+ ((std-instance-p x) (std-instance-hash x))
+ ((fsc-instance-p x) (fsc-instance-hash x))
+ (t (bug "SXHASH-INSTANCE called on some weird thing: ~S" x))))
+\f
;;;; structure-instance stuff
;;;;
;;;; FIXME: Now that the code is SBCL-only, this extra layer of
;;; The definition of STRUCTURE-TYPE-P was moved to early-low.lisp.
(defun get-structure-dd (type)
- (sb-kernel:layout-info (sb-kernel:class-layout (cl:find-class type))))
+ (layout-info (classoid-layout (find-classoid type))))
(defun structure-type-included-type-name (type)
- (let ((include (sb-kernel::dd-include (get-structure-dd type))))
+ (let ((include (dd-include (get-structure-dd type))))
(if (consp include)
(car include)
include)))
(defun structure-type-slot-description-list (type)
(nthcdr (length (let ((include (structure-type-included-type-name type)))
(and include
- (sb-kernel:dd-slots (get-structure-dd include)))))
- (sb-kernel:dd-slots (get-structure-dd type))))
+ (dd-slots (get-structure-dd include)))))
+ (dd-slots (get-structure-dd type))))
(defun structure-slotd-name (slotd)
- (sb-kernel:dsd-name slotd))
+ (dsd-name slotd))
(defun structure-slotd-accessor-symbol (slotd)
- (sb-kernel:dsd-accessor slotd))
+ (dsd-accessor-name slotd))
(defun structure-slotd-reader-function (slotd)
- (fdefinition (sb-kernel:dsd-accessor slotd)))
+ (fdefinition (dsd-accessor-name slotd)))
-(defun structure-slotd-writer-function (slotd)
- (unless (sb-kernel:dsd-read-only slotd)
- (fdefinition `(setf ,(sb-kernel:dsd-accessor slotd)))))
+(defun structure-slotd-writer-function (type slotd)
+ (if (dsd-read-only slotd)
+ (let ((dd (get-structure-dd type)))
+ (coerce (slot-setter-lambda-form dd slotd) 'function))
+ (fdefinition `(setf ,(dsd-accessor-name slotd)))))
(defun structure-slotd-type (slotd)
- (sb-kernel:dsd-type slotd))
+ (dsd-type slotd))
(defun structure-slotd-init-form (slotd)
- (sb-kernel::dsd-default slotd))
+ (dsd-default slotd))
+
+;;; WITH-PCL-LOCK is used around some forms that were previously
+;;; protected by WITHOUT-INTERRUPTS, but in a threaded SBCL we don't
+;;; have a useful WITHOUT-INTERRUPTS. In an unthreaded SBCL I'm not
+;;; sure what the desired effect is anyway: should we be protecting
+;;; against the possibility of recursive calls into these functions
+;;; or are we using WITHOUT-INTERRUPTS as WITHOUT-SCHEDULING?
+;;;
+;;; Users: FORCE-CACHE-FLUSHES, MAKE-INSTANCES-OBSOLETE. Note that
+;;; it's not all certain this is sufficent for threadsafety: do we
+;;; just have to protect against simultaneous calls to these mutators,
+;;; or actually to stop normal slot access etc at the same time as one
+;;; of them runs
+
+#+sb-thread
+(progn
+(defstruct spinlock (value 0))
+(defvar *pcl-lock* (make-spinlock))
+
+(defmacro with-pcl-lock (&body body)
+ `(progn
+ (sb-thread::get-spinlock *pcl-lock* 1 (sb-thread::current-thread-id))
+ (unwind-protect
+ (progn ,@body)
+ (setf (spinlock-value *pcl-lock*) 0))))
+);progn
+
+#-sb-thread
+(defmacro with-pcl-lock (&body body)
+ `(progn ,@body))
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