1 ;;;; This file contains the optimization machinery for make-instance.
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; This software is derived from software originally released by
7 ;;;; Gerd Moellmann. Copyright and release statements follow. Later
8 ;;;; modifications to the software are in the public domain and are
9 ;;;; provided with absolutely no warranty. See the COPYING and
10 ;;;; CREDITS files for more information.
12 ;;; Copyright (C) 2002 Gerd Moellmann <gerd.moellmann@t-online.de>
13 ;;; All rights reserved.
15 ;;; Redistribution and use in source and binary forms, with or without
16 ;;; modification, are permitted provided that the following conditions
19 ;;; 1. Redistributions of source code must retain the above copyright
20 ;;; notice, this list of conditions and the following disclaimer.
21 ;;; 2. Redistributions in binary form must reproduce the above copyright
22 ;;; notice, this list of conditions and the following disclaimer in the
23 ;;; documentation and/or other materials provided with the distribution.
24 ;;; 3. The name of the author may not be used to endorse or promote
25 ;;; products derived from this software without specific prior written
28 ;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
29 ;;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
30 ;;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 ;;; ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
32 ;;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 ;;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
34 ;;; OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
35 ;;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
36 ;;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 ;;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
38 ;;; USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
45 ;;; Compiler macro for MAKE-INSTANCE, and load-time generation of
46 ;;; optimized instance constructor functions.
48 ;;; ********************
49 ;;; Entry Points ******
50 ;;; ********************
52 ;;; UPDATE-CTORS must be called when methods are added/removed,
53 ;;; classes are changed, etc., which affect instance creation.
55 ;;; PRECOMPILE-CTORS can be called to precompile constructor functions
56 ;;; for classes whose definitions are known at the time the function
61 ;;; ******************
63 ;;; ******************
65 (defun plist-keys (plist &key test)
66 (loop for (key . more) on plist by #'cddr
68 (error "Not a property list: ~S" plist)
69 else if (or (null test) (funcall test key))
72 (defun plist-values (plist &key test)
73 (loop for (key . more) on plist by #'cddr
75 (error "Not a property list: ~S" plist)
76 else if (or (null test) (funcall test (car more)))
79 (defun constant-symbol-p (form)
81 (let ((constant (eval form)))
82 (and (symbolp constant)
83 (not (null (symbol-package constant)))))))
90 ;;; Ctors are funcallable instances whose initial function is a
91 ;;; function computing an optimized constructor function when called.
92 ;;; When the optimized function is computed, the function of the
93 ;;; funcallable instance is set to it.
95 (!defstruct-with-alternate-metaclass ctor
96 :slot-names (function-name class-name class initargs)
97 :boa-constructor %make-ctor
98 :superclass-name pcl-funcallable-instance
99 :metaclass-name random-pcl-classoid
100 :metaclass-constructor make-random-pcl-classoid
101 :dd-type funcallable-structure
102 :runtime-type-checks-p nil)
104 ;;; List of all defined ctors.
106 (defvar *all-ctors* ())
108 (defun make-ctor-parameter-list (ctor)
109 (plist-values (ctor-initargs ctor) :test (complement #'constantp)))
111 ;;; Reset CTOR to use a default function that will compute an
112 ;;; optimized constructor function when called.
113 (defun install-initial-constructor (ctor &key force-p)
114 (when (or force-p (ctor-class ctor))
115 (setf (ctor-class ctor) nil)
116 (setf (funcallable-instance-fun ctor)
117 #'(instance-lambda (&rest args)
118 (install-optimized-constructor ctor)
120 (setf (%funcallable-instance-info ctor 1)
121 (ctor-function-name ctor))))
123 ;;; Keep this a separate function for testing.
124 (defun make-ctor-function-name (class-name initargs)
125 (let ((*package* *pcl-package*)
126 (*print-case* :upcase)
129 (format-symbol *pcl-package* "CTOR ~S::~S ~S ~S"
130 (package-name (symbol-package class-name))
131 (symbol-name class-name)
132 (plist-keys initargs)
133 (plist-values initargs :test #'constantp))))
135 ;;; Keep this a separate function for testing.
136 (defun ensure-ctor (function-name class-name initargs)
137 (unless (fboundp function-name)
138 (make-ctor function-name class-name initargs)))
140 ;;; Keep this a separate function for testing.
141 (defun make-ctor (function-name class-name initargs)
142 (without-package-locks ; for (setf symbol-function)
143 (let ((ctor (%make-ctor function-name class-name nil initargs)))
144 (push ctor *all-ctors*)
145 (setf (symbol-function function-name) ctor)
146 (install-initial-constructor ctor :force-p t)
150 ;;; ***********************************************
151 ;;; Compile-Time Expansion of MAKE-INSTANCE *******
152 ;;; ***********************************************
154 (define-compiler-macro make-instance (&whole form &rest args)
155 (declare (ignore args))
156 (or (make-instance->constructor-call form)
159 (defun make-instance->constructor-call (form)
160 (destructuring-bind (fn class-name &rest args) form
161 (declare (ignore fn))
163 ;; Return the name of parameter number I of a constructor
166 (let ((ps #(.p0. .p1. .p2. .p3. .p4. .p5.)))
167 (if (array-in-bounds-p ps i)
169 (format-symbol *pcl-package* ".P~D." i))))
170 ;; Check if CLASS-NAME is a constant symbol. Give up if
173 (unless (and class-name (constant-symbol-p class-name))
174 (return-from make-instance->constructor-call nil)))
175 ;; Check if ARGS are suitable for an optimized constructor.
176 ;; Return NIL from the outer function if not.
178 (loop for (key . more) on args by #'cddr do
179 (when (or (null more)
180 (not (constant-symbol-p key))
181 (eq :allow-other-keys (eval key)))
182 (return-from make-instance->constructor-call nil)))))
185 ;; Collect a plist of initargs and constant values/parameter names
186 ;; in INITARGS. Collect non-constant initialization forms in
188 (multiple-value-bind (initargs value-forms)
189 (loop for (key value) on args by #'cddr and i from 0
190 collect (eval key) into initargs
192 collect value into initargs
194 collect (parameter-name i) into initargs
195 and collect value into value-forms
197 (return (values initargs value-forms)))
198 (let* ((class-name (eval class-name))
199 (function-name (make-ctor-function-name class-name initargs)))
200 ;; Prevent compiler warnings for calling the ctor.
201 (proclaim-as-fun-name function-name)
202 (note-name-defined function-name :function)
203 (when (eq (info :function :where-from function-name) :assumed)
204 (setf (info :function :where-from function-name) :defined)
205 (when (info :function :assumed-type function-name)
206 (setf (info :function :assumed-type function-name) nil)))
207 ;; Return code constructing a ctor at load time, which, when
208 ;; called, will set its funcallable instance function to an
209 ;; optimized constructor function.
211 (declare (disable-package-locks ,function-name))
212 (let ((.x. (load-time-value
213 (ensure-ctor ',function-name ',class-name ',initargs))))
214 (declare (ignore .x.))
215 ;; ??? check if this is worth it.
217 (ftype (or (function ,(make-list (length value-forms)
220 (function (&rest t) t))
222 (,function-name ,@value-forms))))))))
225 ;;; **************************************************
226 ;;; Load-Time Constructor Function Generation *******
227 ;;; **************************************************
229 ;;; The system-supplied primary INITIALIZE-INSTANCE and
230 ;;; SHARED-INITIALIZE methods. One cannot initialize these variables
231 ;;; to the right values here because said functions don't exist yet
232 ;;; when this file is first loaded.
233 (defvar *the-system-ii-method* nil)
234 (defvar *the-system-si-method* nil)
236 (defun install-optimized-constructor (ctor)
237 (let ((class (find-class (ctor-class-name ctor))))
238 (unless (class-finalized-p class)
239 (finalize-inheritance class))
240 (setf (ctor-class ctor) class)
241 (pushnew ctor (plist-value class 'ctors))
242 (setf (funcallable-instance-fun ctor)
243 ;; KLUDGE: Gerd here has the equivalent of (COMPILE NIL
244 ;; (CONSTRUCTOR-FUNCTION-FORM)), but SBCL's COMPILE doesn't
245 ;; deal with INSTANCE-LAMBDA expressions, only with LAMBDA
246 ;; expressions. The below should be equivalent, since we
247 ;; have a compiler-only implementation.
249 ;; (except maybe for optimization qualities? -- CSR,
251 (eval `(function ,(constructor-function-form ctor))))))
253 (defun constructor-function-form (ctor)
254 (let* ((class (ctor-class ctor))
255 (proto (class-prototype class))
256 (make-instance-methods
257 (compute-applicable-methods #'make-instance (list class)))
258 (allocate-instance-methods
259 (compute-applicable-methods #'allocate-instance (list class)))
260 ;; I stared at this in confusion for a while, thinking
261 ;; carefully about the possibility of the class prototype not
262 ;; being of sufficient discrimiating power, given the
263 ;; possibility of EQL-specialized methods on
264 ;; INITIALIZE-INSTANCE or SHARED-INITIALIZE. However, given
265 ;; that this is a constructor optimization, the user doesn't
266 ;; yet have the instance to create a method with such an EQL
269 ;; There remains the (theoretical) possibility of someone
270 ;; coming along with code of the form
272 ;; (defmethod initialize-instance :before ((o foo) ...)
273 ;; (eval `(defmethod shared-initialize :before ((o foo) ...) ...)))
275 ;; but probably we can afford not to worry about this too
276 ;; much for now. -- CSR, 2004-07-12
278 (compute-applicable-methods #'initialize-instance (list proto)))
280 (compute-applicable-methods #'shared-initialize (list proto t)))
281 (setf-svuc-slots-methods
282 (loop for slot in (class-slots class)
283 collect (compute-applicable-methods
284 #'(setf slot-value-using-class)
285 (list nil class proto slot))))
287 (loop for slot in (class-slots class)
288 collect (compute-applicable-methods
289 #'slot-boundp-using-class
290 (list class proto slot)))))
291 ;; Cannot initialize these variables earlier because the generic
292 ;; functions don't exist when PCL is built.
293 (when (null *the-system-si-method*)
294 (setq *the-system-si-method*
295 (find-method #'shared-initialize
296 () (list *the-class-slot-object* *the-class-t*)))
297 (setq *the-system-ii-method*
298 (find-method #'initialize-instance
299 () (list *the-class-slot-object*))))
300 ;; Note that when there are user-defined applicable methods on
301 ;; MAKE-INSTANCE and/or ALLOCATE-INSTANCE, these will show up
302 ;; together with the system-defined ones in what
303 ;; COMPUTE-APPLICABLE-METHODS returns.
304 (or (and (not (structure-class-p class))
305 (not (condition-class-p class))
306 (null (cdr make-instance-methods))
307 (null (cdr allocate-instance-methods))
309 (member (slot-definition-allocation x)
310 '(:instance :class)))
312 (null (check-initargs-1 class (plist-keys (ctor-initargs ctor))
313 (append ii-methods si-methods) nil nil))
314 (not (around-or-nonstandard-primary-method-p
315 ii-methods *the-system-ii-method*))
316 (not (around-or-nonstandard-primary-method-p
317 si-methods *the-system-si-method*))
318 ;; the instance structure protocol goes through
319 ;; slot-value(-using-class) and friends (actually just
320 ;; (SETF SLOT-VALUE-USING-CLASS) and
321 ;; SLOT-BOUNDP-USING-CLASS), so if there are non-standard
322 ;; applicable methods we can't shortcircuit them.
323 (every (lambda (x) (= (length x) 1)) setf-svuc-slots-methods)
324 (every (lambda (x) (= (length x) 1)) sbuc-slots-methods)
325 (optimizing-generator ctor ii-methods si-methods))
326 (fallback-generator ctor ii-methods si-methods))))
328 (defun around-or-nonstandard-primary-method-p
329 (methods &optional standard-method)
330 (loop with primary-checked-p = nil
331 for method in methods
332 as qualifiers = (method-qualifiers method)
333 when (or (eq :around (car qualifiers))
334 (and (null qualifiers)
335 (not primary-checked-p)
336 (not (null standard-method))
337 (not (eq standard-method method))))
339 when (null qualifiers) do
340 (setq primary-checked-p t)))
342 (defun fallback-generator (ctor ii-methods si-methods)
343 (declare (ignore ii-methods si-methods))
344 `(instance-lambda ,(make-ctor-parameter-list ctor)
345 ;; The CTOR MAKE-INSTANCE optimization only kicks in when the
346 ;; first argument to MAKE-INSTANCE is a constant symbol: by
347 ;; calling it with a class, as here, we inhibit the optimization,
348 ;; so removing the possibility of endless recursion. -- CSR,
350 (make-instance ,(ctor-class ctor) ,@(ctor-initargs ctor))))
352 (defun optimizing-generator (ctor ii-methods si-methods)
353 (multiple-value-bind (body before-method-p)
354 (fake-initialization-emf ctor ii-methods si-methods)
355 `(instance-lambda ,(make-ctor-parameter-list ctor)
356 (declare #.*optimize-speed*)
357 ,(wrap-in-allocate-forms ctor body before-method-p))))
359 ;;; Return a form wrapped around BODY that allocates an instance
360 ;;; constructed by CTOR. BEFORE-METHOD-P set means we have to run
361 ;;; before-methods, in which case we initialize instance slots to
362 ;;; +SLOT-UNBOUND+. The resulting form binds the local variables
363 ;;; .INSTANCE. to the instance, and .SLOTS. to the instance's slot
364 ;;; vector around BODY.
365 (defun wrap-in-allocate-forms (ctor body before-method-p)
366 (let* ((class (ctor-class ctor))
367 (wrapper (class-wrapper class))
368 (allocation-function (raw-instance-allocator class))
369 (slots-fetcher (slots-fetcher class)))
370 (if (eq allocation-function 'allocate-standard-instance)
371 `(let ((.instance. (%make-standard-instance nil
372 (get-instance-hash-code)))
374 ,(layout-length wrapper)
375 ,@(when before-method-p
376 '(:initial-element +slot-unbound+)))))
377 (setf (std-instance-wrapper .instance.) ,wrapper)
378 (setf (std-instance-slots .instance.) .slots.)
381 `(let* ((.instance. (,allocation-function ,wrapper))
382 (.slots. (,slots-fetcher .instance.)))
386 ;;; Return a form for invoking METHOD with arguments from ARGS. As
387 ;;; can be seen in METHOD-FUNCTION-FROM-FAST-FUNCTION, method
388 ;;; functions look like (LAMBDA (ARGS NEXT-METHODS) ...). We could
389 ;;; call fast method functions directly here, but benchmarks show that
390 ;;; there's no speed to gain, so lets avoid the hair here.
391 (defmacro invoke-method (method args)
392 `(funcall ,(method-function method) ,args ()))
394 ;;; Return a form that is sort of an effective method comprising all
395 ;;; calls to INITIALIZE-INSTANCE and SHARED-INITIALIZE that would
396 ;;; normally have taken place when calling MAKE-INSTANCE.
397 (defun fake-initialization-emf (ctor ii-methods si-methods)
398 (multiple-value-bind (ii-around ii-before ii-primary ii-after)
399 (standard-sort-methods ii-methods)
400 (declare (ignore ii-primary))
401 (multiple-value-bind (si-around si-before si-primary si-after)
402 (standard-sort-methods si-methods)
403 (declare (ignore si-primary))
404 (aver (and (null ii-around) (null si-around)))
405 (let ((initargs (ctor-initargs ctor))
406 (slot-inits (slot-init-forms ctor (or ii-before si-before))))
408 `(let (,@(when (or ii-before ii-after)
409 `((.ii-args. (list .instance. ,@initargs))))
410 ,@(when (or si-before si-after)
411 `((.si-args. (list .instance. t ,@initargs)))))
412 ,@(loop for method in ii-before
413 collect `(invoke-method ,method .ii-args.))
414 ,@(loop for method in si-before
415 collect `(invoke-method ,method .si-args.))
417 ,@(loop for method in si-after
418 collect `(invoke-method ,method .si-args.))
419 ,@(loop for method in ii-after
420 collect `(invoke-method ,method .ii-args.)))
421 (or ii-before si-before))))))
423 ;;; Return four values from APPLICABLE-METHODS: around methods, before
424 ;;; methods, the applicable primary method, and applicable after
425 ;;; methods. Before and after methods are sorted in the order they
427 (defun standard-sort-methods (applicable-methods)
428 (loop for method in applicable-methods
429 as qualifiers = (method-qualifiers method)
431 collect method into primary
432 else if (eq :around (car qualifiers))
433 collect method into around
434 else if (eq :after (car qualifiers))
435 collect method into after
436 else if (eq :before (car qualifiers))
437 collect method into before
439 (return (values around before (first primary) (reverse after)))))
441 ;;; Return a form initializing instance and class slots of an object
442 ;;; costructed by CTOR. The variable .SLOTS. is assumed to bound to
443 ;;; the instance's slot vector. BEFORE-METHOD-P T means
444 ;;; before-methods will be called, which means that 1) other code will
445 ;;; initialize instance slots to +SLOT-UNBOUND+ before the
446 ;;; before-methods are run, and that we have to check if these
447 ;;; before-methods have set slots.
448 (defun slot-init-forms (ctor before-method-p)
449 (let* ((class (ctor-class ctor))
450 (initargs (ctor-initargs ctor))
451 (initkeys (plist-keys initargs))
453 (make-array (layout-length (class-wrapper class))
454 :initial-element nil))
457 (default-initargs (class-default-initargs class))
459 (compute-initarg-locations
460 class (append initkeys (mapcar #'car default-initargs)))))
461 (labels ((initarg-locations (initarg)
462 (cdr (assoc initarg initarg-locations :test #'eq)))
463 (initializedp (location)
466 (assoc location class-inits :test #'eq))
468 (not (null (aref slot-vector location))))
469 (t (bug "Weird location in ~S" 'slot-init-forms))))
470 (class-init (location type val)
471 (aver (consp location))
472 (unless (initializedp location)
473 (push (list location type val) class-inits)))
474 (instance-init (location type val)
475 (aver (integerp location))
476 (unless (initializedp location)
477 (setf (aref slot-vector location) (list type val))))
478 (default-init-var-name (i)
479 (let ((ps #(.d0. .d1. .d2. .d3. .d4. .d5.)))
480 (if (array-in-bounds-p ps i)
482 (format-symbol *pcl-package* ".D~D." i)))))
483 ;; Loop over supplied initargs and values and record which
484 ;; instance and class slots they initialize.
485 (loop for (key value) on initargs by #'cddr
486 as locations = (initarg-locations key) do
487 (if (constantp value)
488 (dolist (location locations)
490 (class-init location 'constant value)
491 (instance-init location 'constant value)))
492 (dolist (location locations)
494 (class-init location 'param value)
495 (instance-init location 'param value)))))
496 ;; Loop over default initargs of the class, recording
497 ;; initializations of slots that have not been initialized
498 ;; above. Default initargs which are not in the supplied
499 ;; initargs are treated as if they were appended to supplied
500 ;; initargs, that is, their values must be evaluated even
501 ;; if not actually used for initializing a slot.
502 (loop for (key initfn initform) in default-initargs and i from 0
503 unless (member key initkeys :test #'eq) do
504 (let* ((type (if (constantp initform) 'constant 'var))
505 (init (if (eq type 'var) initfn initform)))
507 (let ((init-var (default-init-var-name i)))
509 (push (cons init-var initfn) default-inits)))
510 (dolist (location (initarg-locations key))
512 (class-init location type init)
513 (instance-init location type init)))))
514 ;; Loop over all slots of the class, filling in the rest from
516 (loop for slotd in (class-slots class)
517 as location = (slot-definition-location slotd)
518 as allocation = (slot-definition-allocation slotd)
519 as initfn = (slot-definition-initfunction slotd)
520 as initform = (slot-definition-initform slotd) do
521 (unless (or (eq allocation :class)
523 (initializedp location))
524 (if (constantp initform)
525 (instance-init location 'initform initform)
526 (instance-init location 'initform/initfn initfn))))
527 ;; Generate the forms for initializing instance and class slots.
528 (let ((instance-init-forms
529 (loop for slot-entry across slot-vector and i from 0
530 as (type value) = slot-entry collect
533 (unless before-method-p
534 `(setf (clos-slots-ref .slots. ,i) +slot-unbound+)))
536 `(setf (clos-slots-ref .slots. ,i) ,value))
538 `(setf (clos-slots-ref .slots. ,i) (funcall ,value)))
541 `(when (eq (clos-slots-ref .slots. ,i)
543 (setf (clos-slots-ref .slots. ,i)
545 `(setf (clos-slots-ref .slots. ,i)
549 `(when (eq (clos-slots-ref .slots. ,i)
551 (setf (clos-slots-ref .slots. ,i)
553 `(setf (clos-slots-ref .slots. ,i)
556 `(setf (clos-slots-ref .slots. ,i) ',(eval value))))))
558 (loop for (location type value) in class-inits collect
559 `(setf (cdr ',location)
561 (constant `',(eval value))
562 ((param var) `,value)
563 (initfn `(funcall ,value)))))))
564 (multiple-value-bind (vars bindings)
565 (loop for (var . initfn) in (nreverse default-inits)
566 collect var into vars
567 collect `(,var (funcall ,initfn)) into bindings
568 finally (return (values vars bindings)))
570 (declare (ignorable ,@vars))
571 ,@(delete nil instance-init-forms)
572 ,@class-init-forms))))))
574 ;;; Return an alist of lists (KEY LOCATION ...) telling, for each
575 ;;; key in INITKEYS, which locations the initarg initializes.
576 ;;; CLASS is the class of the instance being initialized.
577 (defun compute-initarg-locations (class initkeys)
578 (loop with slots = (class-slots class)
579 for key in initkeys collect
580 (loop for slot in slots
581 if (memq key (slot-definition-initargs slot))
582 collect (slot-definition-location slot) into locations
584 collect slot into remaining-slots
586 (setq slots remaining-slots)
587 (return (cons key locations)))))
590 ;;; *******************************
591 ;;; External Entry Points ********
592 ;;; *******************************
594 (defun update-ctors (reason &key class name generic-function method)
595 (labels ((reset (class &optional ri-cache-p (ctorsp t))
597 (dolist (ctor (plist-value class 'ctors))
598 (install-initial-constructor ctor)))
600 (setf (plist-value class 'ri-initargs) ()))
601 (dolist (subclass (class-direct-subclasses class))
602 (reset subclass ri-cache-p ctorsp))))
604 ;; CLASS must have been specified.
605 (finalize-inheritance
607 ;; NAME must have been specified.
609 (loop for ctor in *all-ctors*
610 when (eq (ctor-class-name ctor) name) do
611 (when (ctor-class ctor)
612 (reset (ctor-class ctor)))
614 ;; GENERIC-FUNCTION and METHOD must have been specified.
615 ((add-method remove-method)
616 (flet ((class-of-1st-method-param (method)
617 (type-class (first (method-specializers method)))))
618 (case (generic-function-name generic-function)
619 ((make-instance allocate-instance
620 initialize-instance shared-initialize)
621 (reset (class-of-1st-method-param method) t t))
622 ((reinitialize-instance)
623 (reset (class-of-1st-method-param method) t nil))
624 (t (when (or (eq (generic-function-name generic-function)
625 'slot-boundp-using-class)
626 (equal (generic-function-name generic-function)
627 '(setf slot-value-using-class)))
628 ;; this looks awfully expensive, but given that one
629 ;; can specialize on the SLOTD argument, nothing is
630 ;; safe. -- CSR, 2004-07-12
631 (reset (find-class 'standard-object))))))))))
633 (defun precompile-ctors ()
634 (dolist (ctor *all-ctors*)
635 (when (null (ctor-class ctor))
636 (let ((class (find-class (ctor-class-name ctor) nil)))
637 (when (and class (class-finalized-p class))
638 (install-optimized-constructor ctor))))))
640 (defun check-ri-initargs (instance initargs)
641 (let* ((class (class-of instance))
642 (keys (plist-keys initargs))
643 (cached (assoc keys (plist-value class 'ri-initargs)
649 ;; FIXME: give CHECK-INITARGS-1 and friends a
650 ;; more mnemonic name and (possibly) a nicer,
651 ;; more orthogonal interface.
654 (list (list* 'reinitialize-instance instance initargs)
655 (list* 'shared-initialize instance nil initargs))
657 (setf (plist-value class 'ri-initargs)
658 (acons keys invalid cached))
661 (error 'initarg-error :class class :initargs invalid-keys))))