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 quote-plist-keys (plist)
66 (loop for (key . more) on plist by #'cddr
68 (error "Not a property list: ~S" plist)
71 and collect (car more)))
73 (defun plist-keys (plist &key test)
74 (loop for (key . more) on plist by #'cddr
76 (error "Not a property list: ~S" plist)
77 else if (or (null test) (funcall test key))
80 (defun plist-values (plist &key test)
81 (loop for (key . more) on plist by #'cddr
83 (error "Not a property list: ~S" plist)
84 else if (or (null test) (funcall test (car more)))
87 (defun constant-symbol-p (form)
89 (let ((constant (eval form)))
90 (and (symbolp constant)
91 (not (null (symbol-package constant)))))))
93 ;;; somewhat akin to DEFAULT-INITARGS (SLOT-CLASS T T), but just
94 ;;; collecting the defaulted initargs for the call.
95 (defun ctor-default-initkeys (supplied-initargs class-default-initargs)
96 (loop for (key) in class-default-initargs
97 when (eq (getf supplied-initargs key '.not-there.) '.not-there.)
100 ;;; *****************
102 ;;; *****************
104 ;;; Ctors are funcallable instances whose initial function is a
105 ;;; function computing an optimized constructor function when called.
106 ;;; When the optimized function is computed, the function of the
107 ;;; funcallable instance is set to it.
109 (!defstruct-with-alternate-metaclass ctor
110 :slot-names (function-name class-name class initargs)
111 :boa-constructor %make-ctor
112 :superclass-name pcl-funcallable-instance
113 :metaclass-name random-pcl-classoid
114 :metaclass-constructor make-random-pcl-classoid
115 :dd-type funcallable-structure
116 :runtime-type-checks-p nil)
118 ;;; List of all defined ctors.
120 (defvar *all-ctors* ())
122 (defun make-ctor-parameter-list (ctor)
123 (plist-values (ctor-initargs ctor) :test (complement #'constantp)))
125 ;;; Reset CTOR to use a default function that will compute an
126 ;;; optimized constructor function when called.
127 (defun install-initial-constructor (ctor &key force-p)
128 (when (or force-p (ctor-class ctor))
129 (setf (ctor-class ctor) nil)
130 (setf (funcallable-instance-fun ctor)
131 #'(lambda (&rest args)
132 (install-optimized-constructor ctor)
134 (setf (%funcallable-instance-info ctor 1)
135 (ctor-function-name ctor))))
137 (defun make-ctor-function-name (class-name initargs)
138 (list* 'ctor class-name initargs))
140 ;;; Keep this a separate function for testing.
141 (defun ensure-ctor (function-name class-name initargs)
142 (unless (fboundp function-name)
143 (make-ctor function-name class-name initargs)))
145 ;;; Keep this a separate function for testing.
146 (defun make-ctor (function-name class-name initargs)
147 (without-package-locks ; for (setf symbol-function)
148 (let ((ctor (%make-ctor function-name class-name nil initargs)))
149 (push ctor *all-ctors*)
150 (setf (fdefinition function-name) ctor)
151 (install-initial-constructor ctor :force-p t)
155 ;;; ***********************************************
156 ;;; Compile-Time Expansion of MAKE-INSTANCE *******
157 ;;; ***********************************************
159 (define-compiler-macro make-instance (&whole form &rest args)
160 (declare (ignore args))
161 (or (make-instance->constructor-call form)
164 (defun make-instance->constructor-call (form)
165 (destructuring-bind (fn class-name &rest args) form
166 (declare (ignore fn))
168 ;; Return the name of parameter number I of a constructor
171 (let ((ps #(.p0. .p1. .p2. .p3. .p4. .p5.)))
172 (if (array-in-bounds-p ps i)
174 (format-symbol *pcl-package* ".P~D." i))))
175 ;; Check if CLASS-NAME is a constant symbol. Give up if
178 (unless (and class-name (constant-symbol-p class-name))
179 (return-from make-instance->constructor-call nil)))
180 ;; Check if ARGS are suitable for an optimized constructor.
181 ;; Return NIL from the outer function if not.
183 (loop for (key . more) on args by #'cddr do
184 (when (or (null more)
185 (not (constant-symbol-p key))
186 (eq :allow-other-keys (eval key)))
187 (return-from make-instance->constructor-call nil)))))
190 ;; Collect a plist of initargs and constant values/parameter names
191 ;; in INITARGS. Collect non-constant initialization forms in
193 (multiple-value-bind (initargs value-forms)
194 (loop for (key value) on args by #'cddr and i from 0
195 collect (eval key) into initargs
197 collect value into initargs
199 collect (parameter-name i) into initargs
200 and collect value into value-forms
202 (return (values initargs value-forms)))
203 (let* ((class-name (eval class-name))
204 (function-name (make-ctor-function-name class-name initargs)))
205 ;; Prevent compiler warnings for calling the ctor.
206 (proclaim-as-fun-name function-name)
207 (note-name-defined function-name :function)
208 (when (eq (info :function :where-from function-name) :assumed)
209 (setf (info :function :where-from function-name) :defined)
210 (when (info :function :assumed-type function-name)
211 (setf (info :function :assumed-type function-name) nil)))
212 ;; Return code constructing a ctor at load time, which, when
213 ;; called, will set its funcallable instance function to an
214 ;; optimized constructor function.
216 (declare (disable-package-locks ,function-name))
217 (let ((.x. (load-time-value
218 (ensure-ctor ',function-name ',class-name ',initargs))))
219 (declare (ignore .x.))
220 ;; ??? check if this is worth it.
222 (ftype (or (function ,(make-list (length value-forms)
225 (function (&rest t) t))
227 (funcall (function ,function-name) ,@value-forms))))))))
230 ;;; **************************************************
231 ;;; Load-Time Constructor Function Generation *******
232 ;;; **************************************************
234 ;;; The system-supplied primary INITIALIZE-INSTANCE and
235 ;;; SHARED-INITIALIZE methods. One cannot initialize these variables
236 ;;; to the right values here because said functions don't exist yet
237 ;;; when this file is first loaded.
238 (defvar *the-system-ii-method* nil)
239 (defvar *the-system-si-method* nil)
241 (defun install-optimized-constructor (ctor)
242 (let ((class (find-class (ctor-class-name ctor))))
243 (unless (class-finalized-p class)
244 (finalize-inheritance class))
245 (setf (ctor-class ctor) class)
246 (pushnew ctor (plist-value class 'ctors))
247 (setf (funcallable-instance-fun ctor)
248 ;; KLUDGE: Gerd here has the equivalent of (COMPILE NIL
249 ;; (CONSTRUCTOR-FUNCTION-FORM)), but SBCL's COMPILE doesn't
250 ;; deal with INSTANCE-LAMBDA expressions, only with LAMBDA
251 ;; expressions. The below should be equivalent, since we
252 ;; have a compiler-only implementation.
254 ;; (except maybe for optimization qualities? -- CSR,
257 ;; FIXME: INSTANCE-LAMBDA is no more. We could change this.
258 (eval `(function ,(constructor-function-form ctor))))))
260 (defun constructor-function-form (ctor)
261 (let* ((class (ctor-class ctor))
262 (proto (class-prototype class))
263 (make-instance-methods
264 (compute-applicable-methods #'make-instance (list class)))
265 (allocate-instance-methods
266 (compute-applicable-methods #'allocate-instance (list class)))
267 ;; I stared at this in confusion for a while, thinking
268 ;; carefully about the possibility of the class prototype not
269 ;; being of sufficient discrimiating power, given the
270 ;; possibility of EQL-specialized methods on
271 ;; INITIALIZE-INSTANCE or SHARED-INITIALIZE. However, given
272 ;; that this is a constructor optimization, the user doesn't
273 ;; yet have the instance to create a method with such an EQL
276 ;; There remains the (theoretical) possibility of someone
277 ;; coming along with code of the form
279 ;; (defmethod initialize-instance :before ((o foo) ...)
280 ;; (eval `(defmethod shared-initialize :before ((o foo) ...) ...)))
282 ;; but probably we can afford not to worry about this too
283 ;; much for now. -- CSR, 2004-07-12
285 (compute-applicable-methods #'initialize-instance (list proto)))
287 (compute-applicable-methods #'shared-initialize (list proto t)))
288 (setf-svuc-slots-methods
289 (loop for slot in (class-slots class)
290 collect (compute-applicable-methods
291 #'(setf slot-value-using-class)
292 (list nil class proto slot))))
294 (loop for slot in (class-slots class)
295 collect (compute-applicable-methods
296 #'slot-boundp-using-class
297 (list class proto slot)))))
298 ;; Cannot initialize these variables earlier because the generic
299 ;; functions don't exist when PCL is built.
300 (when (null *the-system-si-method*)
301 (setq *the-system-si-method*
302 (find-method #'shared-initialize
303 () (list *the-class-slot-object* *the-class-t*)))
304 (setq *the-system-ii-method*
305 (find-method #'initialize-instance
306 () (list *the-class-slot-object*))))
307 ;; Note that when there are user-defined applicable methods on
308 ;; MAKE-INSTANCE and/or ALLOCATE-INSTANCE, these will show up
309 ;; together with the system-defined ones in what
310 ;; COMPUTE-APPLICABLE-METHODS returns.
311 (or (and (not (structure-class-p class))
312 (not (condition-class-p class))
313 (null (cdr make-instance-methods))
314 (null (cdr allocate-instance-methods))
316 (member (slot-definition-allocation x)
317 '(:instance :class)))
319 (null (check-initargs-1
322 (ctor-default-initkeys
323 (ctor-initargs ctor) (class-default-initargs class))
324 (plist-keys (ctor-initargs ctor)))
325 (append ii-methods si-methods) nil nil))
326 (not (around-or-nonstandard-primary-method-p
327 ii-methods *the-system-ii-method*))
328 (not (around-or-nonstandard-primary-method-p
329 si-methods *the-system-si-method*))
330 ;; the instance structure protocol goes through
331 ;; slot-value(-using-class) and friends (actually just
332 ;; (SETF SLOT-VALUE-USING-CLASS) and
333 ;; SLOT-BOUNDP-USING-CLASS), so if there are non-standard
334 ;; applicable methods we can't shortcircuit them.
335 (every (lambda (x) (= (length x) 1)) setf-svuc-slots-methods)
336 (every (lambda (x) (= (length x) 1)) sbuc-slots-methods)
337 (optimizing-generator ctor ii-methods si-methods))
338 (fallback-generator ctor ii-methods si-methods))))
340 (defun around-or-nonstandard-primary-method-p
341 (methods &optional standard-method)
342 (loop with primary-checked-p = nil
343 for method in methods
344 as qualifiers = (method-qualifiers method)
345 when (or (eq :around (car qualifiers))
346 (and (null qualifiers)
347 (not primary-checked-p)
348 (not (null standard-method))
349 (not (eq standard-method method))))
351 when (null qualifiers) do
352 (setq primary-checked-p t)))
354 (defun fallback-generator (ctor ii-methods si-methods)
355 (declare (ignore ii-methods si-methods))
356 `(lambda ,(make-ctor-parameter-list ctor)
357 ;; The CTOR MAKE-INSTANCE optimization only kicks in when the
358 ;; first argument to MAKE-INSTANCE is a constant symbol: by
359 ;; calling it with a class, as here, we inhibit the optimization,
360 ;; so removing the possibility of endless recursion. -- CSR,
362 (make-instance ,(ctor-class ctor) ,@(ctor-initargs ctor))))
364 (defun optimizing-generator (ctor ii-methods si-methods)
365 (multiple-value-bind (body before-method-p)
366 (fake-initialization-emf ctor ii-methods si-methods)
367 `(lambda ,(make-ctor-parameter-list ctor)
368 (declare #.*optimize-speed*)
369 ,(wrap-in-allocate-forms ctor body before-method-p))))
371 ;;; Return a form wrapped around BODY that allocates an instance
372 ;;; constructed by CTOR. BEFORE-METHOD-P set means we have to run
373 ;;; before-methods, in which case we initialize instance slots to
374 ;;; +SLOT-UNBOUND+. The resulting form binds the local variables
375 ;;; .INSTANCE. to the instance, and .SLOTS. to the instance's slot
376 ;;; vector around BODY.
377 (defun wrap-in-allocate-forms (ctor body before-method-p)
378 (let* ((class (ctor-class ctor))
379 (wrapper (class-wrapper class))
380 (allocation-function (raw-instance-allocator class))
381 (slots-fetcher (slots-fetcher class)))
382 (if (eq allocation-function 'allocate-standard-instance)
383 `(let ((.instance. (%make-standard-instance nil
384 (get-instance-hash-code)))
386 ,(layout-length wrapper)
387 ,@(when before-method-p
388 '(:initial-element +slot-unbound+)))))
389 (setf (std-instance-wrapper .instance.) ,wrapper)
390 (setf (std-instance-slots .instance.) .slots.)
393 `(let* ((.instance. (,allocation-function ,wrapper))
394 (.slots. (,slots-fetcher .instance.)))
398 ;;; Return a form for invoking METHOD with arguments from ARGS. As
399 ;;; can be seen in METHOD-FUNCTION-FROM-FAST-FUNCTION, method
400 ;;; functions look like (LAMBDA (ARGS NEXT-METHODS) ...). We could
401 ;;; call fast method functions directly here, but benchmarks show that
402 ;;; there's no speed to gain, so lets avoid the hair here.
403 (defmacro invoke-method (method args)
404 `(funcall ,(method-function method) ,args ()))
406 ;;; Return a form that is sort of an effective method comprising all
407 ;;; calls to INITIALIZE-INSTANCE and SHARED-INITIALIZE that would
408 ;;; normally have taken place when calling MAKE-INSTANCE.
409 (defun fake-initialization-emf (ctor ii-methods si-methods)
410 (multiple-value-bind (ii-around ii-before ii-primary ii-after)
411 (standard-sort-methods ii-methods)
412 (declare (ignore ii-primary))
413 (multiple-value-bind (si-around si-before si-primary si-after)
414 (standard-sort-methods si-methods)
415 (declare (ignore si-primary))
416 (aver (and (null ii-around) (null si-around)))
417 (let ((initargs (ctor-initargs ctor)))
418 (multiple-value-bind (bindings vars defaulting-initargs body)
419 (slot-init-forms ctor (or ii-before si-before))
422 (declare (ignorable ,@vars))
423 (let (,@(when (or ii-before ii-after)
425 (list .instance. ,@(quote-plist-keys initargs) ,@defaulting-initargs))))
426 ,@(when (or si-before si-after)
428 (list .instance. t ,@(quote-plist-keys initargs) ,@defaulting-initargs)))))
429 ,@(loop for method in ii-before
430 collect `(invoke-method ,method .ii-args.))
431 ,@(loop for method in si-before
432 collect `(invoke-method ,method .si-args.))
434 ,@(loop for method in si-after
435 collect `(invoke-method ,method .si-args.))
436 ,@(loop for method in ii-after
437 collect `(invoke-method ,method .ii-args.))))
438 (or ii-before si-before)))))))
440 ;;; Return four values from APPLICABLE-METHODS: around methods, before
441 ;;; methods, the applicable primary method, and applicable after
442 ;;; methods. Before and after methods are sorted in the order they
444 (defun standard-sort-methods (applicable-methods)
445 (loop for method in applicable-methods
446 as qualifiers = (method-qualifiers method)
448 collect method into primary
449 else if (eq :around (car qualifiers))
450 collect method into around
451 else if (eq :after (car qualifiers))
452 collect method into after
453 else if (eq :before (car qualifiers))
454 collect method into before
456 (return (values around before (first primary) (reverse after)))))
458 ;;; Return as multiple values bindings for default initialization
459 ;;; arguments, variable names, defaulting initargs and a body for
460 ;;; initializing instance and class slots of an object costructed by
461 ;;; CTOR. The variable .SLOTS. is assumed to bound to the instance's
462 ;;; slot vector. BEFORE-METHOD-P T means before-methods will be
463 ;;; called, which means that 1) other code will initialize instance
464 ;;; slots to +SLOT-UNBOUND+ before the before-methods are run, and
465 ;;; that we have to check if these before-methods have set slots.
466 (defun slot-init-forms (ctor before-method-p)
467 (let* ((class (ctor-class ctor))
468 (initargs (ctor-initargs ctor))
469 (initkeys (plist-keys initargs))
471 (make-array (layout-length (class-wrapper class))
472 :initial-element nil))
475 (defaulting-initargs ())
476 (default-initargs (class-default-initargs class))
478 (compute-initarg-locations
479 class (append initkeys (mapcar #'car default-initargs)))))
480 (labels ((initarg-locations (initarg)
481 (cdr (assoc initarg initarg-locations :test #'eq)))
482 (initializedp (location)
485 (assoc location class-inits :test #'eq))
487 (not (null (aref slot-vector location))))
488 (t (bug "Weird location in ~S" 'slot-init-forms))))
489 (class-init (location type val)
490 (aver (consp location))
491 (unless (initializedp location)
492 (push (list location type val) class-inits)))
493 (instance-init (location type val)
494 (aver (integerp location))
495 (unless (initializedp location)
496 (setf (aref slot-vector location) (list type val))))
497 (default-init-var-name (i)
498 (let ((ps #(.d0. .d1. .d2. .d3. .d4. .d5.)))
499 (if (array-in-bounds-p ps i)
501 (format-symbol *pcl-package* ".D~D." i)))))
502 ;; Loop over supplied initargs and values and record which
503 ;; instance and class slots they initialize.
504 (loop for (key value) on initargs by #'cddr
505 as locations = (initarg-locations key) do
506 (if (constantp value)
507 (dolist (location locations)
509 (class-init location 'constant value)
510 (instance-init location 'constant value)))
511 (dolist (location locations)
513 (class-init location 'param value)
514 (instance-init location 'param value)))))
515 ;; Loop over default initargs of the class, recording
516 ;; initializations of slots that have not been initialized
517 ;; above. Default initargs which are not in the supplied
518 ;; initargs are treated as if they were appended to supplied
519 ;; initargs, that is, their values must be evaluated even
520 ;; if not actually used for initializing a slot.
521 (loop for (key initform initfn) in default-initargs and i from 0
522 unless (member key initkeys :test #'eq) do
523 (let* ((type (if (constantp initform) 'constant 'var))
524 (init (if (eq type 'var) initfn initform)))
527 (push key defaulting-initargs)
528 (push initform defaulting-initargs))
530 (push key defaulting-initargs)
531 (push (default-init-var-name i) defaulting-initargs)))
533 (let ((init-var (default-init-var-name i)))
535 (push (cons init-var initfn) default-inits)))
536 (dolist (location (initarg-locations key))
538 (class-init location type init)
539 (instance-init location type init)))))
540 ;; Loop over all slots of the class, filling in the rest from
542 (loop for slotd in (class-slots class)
543 as location = (slot-definition-location slotd)
544 as allocation = (slot-definition-allocation slotd)
545 as initfn = (slot-definition-initfunction slotd)
546 as initform = (slot-definition-initform slotd) do
547 (unless (or (eq allocation :class)
549 (initializedp location))
550 (if (constantp initform)
551 (instance-init location 'initform initform)
552 (instance-init location 'initform/initfn initfn))))
553 ;; Generate the forms for initializing instance and class slots.
554 (let ((instance-init-forms
555 (loop for slot-entry across slot-vector and i from 0
556 as (type value) = slot-entry collect
559 (unless before-method-p
560 `(setf (clos-slots-ref .slots. ,i) +slot-unbound+)))
562 `(setf (clos-slots-ref .slots. ,i) ,value))
564 `(setf (clos-slots-ref .slots. ,i) (funcall ,value)))
567 `(when (eq (clos-slots-ref .slots. ,i)
569 (setf (clos-slots-ref .slots. ,i)
571 `(setf (clos-slots-ref .slots. ,i)
575 `(when (eq (clos-slots-ref .slots. ,i)
577 (setf (clos-slots-ref .slots. ,i)
579 `(setf (clos-slots-ref .slots. ,i)
582 `(setf (clos-slots-ref .slots. ,i) ',(eval value))))))
584 (loop for (location type value) in class-inits collect
585 `(setf (cdr ',location)
587 (constant `',(eval value))
588 ((param var) `,value)
589 (initfn `(funcall ,value)))))))
590 (multiple-value-bind (vars bindings)
591 (loop for (var . initfn) in (nreverse default-inits)
592 collect var into vars
593 collect `(,var (funcall ,initfn)) into bindings
594 finally (return (values vars bindings)))
595 (values bindings vars (nreverse defaulting-initargs)
596 `(,@(delete nil instance-init-forms)
597 ,@class-init-forms)))))))
599 ;;; Return an alist of lists (KEY LOCATION ...) telling, for each
600 ;;; key in INITKEYS, which locations the initarg initializes.
601 ;;; CLASS is the class of the instance being initialized.
602 (defun compute-initarg-locations (class initkeys)
603 (loop with slots = (class-slots class)
604 for key in initkeys collect
605 (loop for slot in slots
606 if (memq key (slot-definition-initargs slot))
607 collect (slot-definition-location slot) into locations
609 collect slot into remaining-slots
611 (setq slots remaining-slots)
612 (return (cons key locations)))))
615 ;;; *******************************
616 ;;; External Entry Points ********
617 ;;; *******************************
619 (defun update-ctors (reason &key class name generic-function method)
620 (labels ((reset (class &optional ri-cache-p (ctorsp t))
622 (dolist (ctor (plist-value class 'ctors))
623 (install-initial-constructor ctor)))
625 (setf (plist-value class 'ri-initargs) ()))
626 (dolist (subclass (class-direct-subclasses class))
627 (reset subclass ri-cache-p ctorsp))))
629 ;; CLASS must have been specified.
630 (finalize-inheritance
632 ;; NAME must have been specified.
634 (loop for ctor in *all-ctors*
635 when (eq (ctor-class-name ctor) name) do
636 (when (ctor-class ctor)
637 (reset (ctor-class ctor)))
639 ;; GENERIC-FUNCTION and METHOD must have been specified.
640 ((add-method remove-method)
641 (flet ((class-of-1st-method-param (method)
642 (type-class (first (method-specializers method)))))
643 (case (generic-function-name generic-function)
644 ((make-instance allocate-instance
645 initialize-instance shared-initialize)
646 (reset (class-of-1st-method-param method) t t))
647 ((reinitialize-instance)
648 (reset (class-of-1st-method-param method) t nil))
649 (t (when (or (eq (generic-function-name generic-function)
650 'slot-boundp-using-class)
651 (equal (generic-function-name generic-function)
652 '(setf slot-value-using-class)))
653 ;; this looks awfully expensive, but given that one
654 ;; can specialize on the SLOTD argument, nothing is
655 ;; safe. -- CSR, 2004-07-12
656 (reset (find-class 'standard-object))))))))))
658 (defun precompile-ctors ()
659 (dolist (ctor *all-ctors*)
660 (when (null (ctor-class ctor))
661 (let ((class (find-class (ctor-class-name ctor) nil)))
662 (when (and class (class-finalized-p class))
663 (install-optimized-constructor ctor))))))
665 (defun check-ri-initargs (instance initargs)
666 (let* ((class (class-of instance))
667 (keys (plist-keys initargs))
668 (cached (assoc keys (plist-value class 'ri-initargs)
674 ;; FIXME: give CHECK-INITARGS-1 and friends a
675 ;; more mnemonic name and (possibly) a nicer,
676 ;; more orthogonal interface.
679 (list (list* 'reinitialize-instance instance initargs)
680 (list* 'shared-initialize instance nil initargs))
682 (setf (plist-value class 'ri-initargs)
683 (acons keys invalid cached))
686 (error 'initarg-error :class class :initargs invalid-keys))))