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 (multiple-value-bind (form locations names)
259 (constructor-function-form ctor)
260 (apply (compile nil `(lambda ,names ,form)) locations)))))
262 (defun constructor-function-form (ctor)
263 (let* ((class (ctor-class ctor))
264 (proto (class-prototype class))
265 (make-instance-methods
266 (compute-applicable-methods #'make-instance (list class)))
267 (allocate-instance-methods
268 (compute-applicable-methods #'allocate-instance (list class)))
269 ;; I stared at this in confusion for a while, thinking
270 ;; carefully about the possibility of the class prototype not
271 ;; being of sufficient discrimiating power, given the
272 ;; possibility of EQL-specialized methods on
273 ;; INITIALIZE-INSTANCE or SHARED-INITIALIZE. However, given
274 ;; that this is a constructor optimization, the user doesn't
275 ;; yet have the instance to create a method with such an EQL
278 ;; There remains the (theoretical) possibility of someone
279 ;; coming along with code of the form
281 ;; (defmethod initialize-instance :before ((o foo) ...)
282 ;; (eval `(defmethod shared-initialize :before ((o foo) ...) ...)))
284 ;; but probably we can afford not to worry about this too
285 ;; much for now. -- CSR, 2004-07-12
287 (compute-applicable-methods #'initialize-instance (list proto)))
289 (compute-applicable-methods #'shared-initialize (list proto t)))
290 (setf-svuc-slots-methods
291 (loop for slot in (class-slots class)
292 collect (compute-applicable-methods
293 #'(setf slot-value-using-class)
294 (list nil class proto slot))))
296 (loop for slot in (class-slots class)
297 collect (compute-applicable-methods
298 #'slot-boundp-using-class
299 (list class proto slot)))))
300 ;; Cannot initialize these variables earlier because the generic
301 ;; functions don't exist when PCL is built.
302 (when (null *the-system-si-method*)
303 (setq *the-system-si-method*
304 (find-method #'shared-initialize
305 () (list *the-class-slot-object* *the-class-t*)))
306 (setq *the-system-ii-method*
307 (find-method #'initialize-instance
308 () (list *the-class-slot-object*))))
309 ;; Note that when there are user-defined applicable methods on
310 ;; MAKE-INSTANCE and/or ALLOCATE-INSTANCE, these will show up
311 ;; together with the system-defined ones in what
312 ;; COMPUTE-APPLICABLE-METHODS returns.
313 (if (and (not (structure-class-p class))
314 (not (condition-class-p class))
315 (null (cdr make-instance-methods))
316 (null (cdr allocate-instance-methods))
318 (member (slot-definition-allocation x)
319 '(:instance :class)))
321 (null (check-initargs-1
324 (ctor-default-initkeys
325 (ctor-initargs ctor) (class-default-initargs class))
326 (plist-keys (ctor-initargs ctor)))
327 (append ii-methods si-methods) nil nil))
328 (not (around-or-nonstandard-primary-method-p
329 ii-methods *the-system-ii-method*))
330 (not (around-or-nonstandard-primary-method-p
331 si-methods *the-system-si-method*))
332 ;; the instance structure protocol goes through
333 ;; slot-value(-using-class) and friends (actually just
334 ;; (SETF SLOT-VALUE-USING-CLASS) and
335 ;; SLOT-BOUNDP-USING-CLASS), so if there are non-standard
336 ;; applicable methods we can't shortcircuit them.
337 (every (lambda (x) (= (length x) 1)) setf-svuc-slots-methods)
338 (every (lambda (x) (= (length x) 1)) sbuc-slots-methods))
339 (optimizing-generator ctor ii-methods si-methods)
340 (fallback-generator ctor ii-methods si-methods))))
342 (defun around-or-nonstandard-primary-method-p
343 (methods &optional standard-method)
344 (loop with primary-checked-p = nil
345 for method in methods
346 as qualifiers = (method-qualifiers method)
347 when (or (eq :around (car qualifiers))
348 (and (null qualifiers)
349 (not primary-checked-p)
350 (not (null standard-method))
351 (not (eq standard-method method))))
353 when (null qualifiers) do
354 (setq primary-checked-p t)))
356 (defun fallback-generator (ctor ii-methods si-methods)
357 (declare (ignore ii-methods si-methods))
358 `(lambda ,(make-ctor-parameter-list ctor)
359 ;; The CTOR MAKE-INSTANCE optimization only kicks in when the
360 ;; first argument to MAKE-INSTANCE is a constant symbol: by
361 ;; calling it with a class, as here, we inhibit the optimization,
362 ;; so removing the possibility of endless recursion. -- CSR,
364 (make-instance ,(ctor-class ctor) ,@(ctor-initargs ctor))))
366 (defun optimizing-generator (ctor ii-methods si-methods)
367 (multiple-value-bind (locations names body before-method-p)
368 (fake-initialization-emf ctor ii-methods si-methods)
370 `(lambda ,(make-ctor-parameter-list ctor)
371 (declare #.*optimize-speed*)
372 ,(wrap-in-allocate-forms ctor body before-method-p))
376 ;;; Return a form wrapped around BODY that allocates an instance
377 ;;; constructed by CTOR. BEFORE-METHOD-P set means we have to run
378 ;;; before-methods, in which case we initialize instance slots to
379 ;;; +SLOT-UNBOUND+. The resulting form binds the local variables
380 ;;; .INSTANCE. to the instance, and .SLOTS. to the instance's slot
381 ;;; vector around BODY.
382 (defun wrap-in-allocate-forms (ctor body before-method-p)
383 (let* ((class (ctor-class ctor))
384 (wrapper (class-wrapper class))
385 (allocation-function (raw-instance-allocator class))
386 (slots-fetcher (slots-fetcher class)))
387 (if (eq allocation-function 'allocate-standard-instance)
388 `(let ((.instance. (%make-standard-instance nil
389 (get-instance-hash-code)))
391 ,(layout-length wrapper)
392 ,@(when before-method-p
393 '(:initial-element +slot-unbound+)))))
394 (setf (std-instance-wrapper .instance.) ,wrapper)
395 (setf (std-instance-slots .instance.) .slots.)
398 `(let* ((.instance. (,allocation-function ,wrapper))
399 (.slots. (,slots-fetcher .instance.)))
403 ;;; Return a form for invoking METHOD with arguments from ARGS. As
404 ;;; can be seen in METHOD-FUNCTION-FROM-FAST-FUNCTION, method
405 ;;; functions look like (LAMBDA (ARGS NEXT-METHODS) ...). We could
406 ;;; call fast method functions directly here, but benchmarks show that
407 ;;; there's no speed to gain, so lets avoid the hair here.
408 (defmacro invoke-method (method args)
409 `(funcall ,(method-function method) ,args ()))
411 ;;; Return a form that is sort of an effective method comprising all
412 ;;; calls to INITIALIZE-INSTANCE and SHARED-INITIALIZE that would
413 ;;; normally have taken place when calling MAKE-INSTANCE.
414 (defun fake-initialization-emf (ctor ii-methods si-methods)
415 (multiple-value-bind (ii-around ii-before ii-primary ii-after)
416 (standard-sort-methods ii-methods)
417 (declare (ignore ii-primary))
418 (multiple-value-bind (si-around si-before si-primary si-after)
419 (standard-sort-methods si-methods)
420 (declare (ignore si-primary))
421 (aver (and (null ii-around) (null si-around)))
422 (let ((initargs (ctor-initargs ctor)))
423 (multiple-value-bind (locations names bindings vars defaulting-initargs body)
424 (slot-init-forms ctor (or ii-before si-before))
429 (declare (ignorable ,@vars))
430 (let (,@(when (or ii-before ii-after)
432 (list .instance. ,@(quote-plist-keys initargs) ,@defaulting-initargs))))
433 ,@(when (or si-before si-after)
435 (list .instance. t ,@(quote-plist-keys initargs) ,@defaulting-initargs)))))
436 ,@(loop for method in ii-before
437 collect `(invoke-method ,method .ii-args.))
438 ,@(loop for method in si-before
439 collect `(invoke-method ,method .si-args.))
441 ,@(loop for method in si-after
442 collect `(invoke-method ,method .si-args.))
443 ,@(loop for method in ii-after
444 collect `(invoke-method ,method .ii-args.))))
445 (or ii-before si-before)))))))
447 ;;; Return four values from APPLICABLE-METHODS: around methods, before
448 ;;; methods, the applicable primary method, and applicable after
449 ;;; methods. Before and after methods are sorted in the order they
451 (defun standard-sort-methods (applicable-methods)
452 (loop for method in applicable-methods
453 as qualifiers = (method-qualifiers method)
455 collect method into primary
456 else if (eq :around (car qualifiers))
457 collect method into around
458 else if (eq :after (car qualifiers))
459 collect method into after
460 else if (eq :before (car qualifiers))
461 collect method into before
463 (return (values around before (first primary) (reverse after)))))
465 ;;; Return as multiple values bindings for default initialization
466 ;;; arguments, variable names, defaulting initargs and a body for
467 ;;; initializing instance and class slots of an object costructed by
468 ;;; CTOR. The variable .SLOTS. is assumed to bound to the instance's
469 ;;; slot vector. BEFORE-METHOD-P T means before-methods will be
470 ;;; called, which means that 1) other code will initialize instance
471 ;;; slots to +SLOT-UNBOUND+ before the before-methods are run, and
472 ;;; that we have to check if these before-methods have set slots.
473 (defun slot-init-forms (ctor before-method-p)
474 (let* ((class (ctor-class ctor))
475 (initargs (ctor-initargs ctor))
476 (initkeys (plist-keys initargs))
478 (make-array (layout-length (class-wrapper class))
479 :initial-element nil))
482 (defaulting-initargs ())
483 (default-initargs (class-default-initargs class))
485 (compute-initarg-locations
486 class (append initkeys (mapcar #'car default-initargs)))))
487 (labels ((initarg-locations (initarg)
488 (cdr (assoc initarg initarg-locations :test #'eq)))
489 (initializedp (location)
492 (assoc location class-inits :test #'eq))
494 (not (null (aref slot-vector location))))
495 (t (bug "Weird location in ~S" 'slot-init-forms))))
496 (class-init (location type val)
497 (aver (consp location))
498 (unless (initializedp location)
499 (push (list location type val) class-inits)))
500 (instance-init (location type val)
501 (aver (integerp location))
502 (unless (initializedp location)
503 (setf (aref slot-vector location) (list type val))))
504 (default-init-var-name (i)
505 (let ((ps #(.d0. .d1. .d2. .d3. .d4. .d5.)))
506 (if (array-in-bounds-p ps i)
508 (format-symbol *pcl-package* ".D~D." i))))
509 (location-var-name (i)
510 (let ((ls #(.l0. .l1. .l2. .l3. .l4. .l5.)))
511 (if (array-in-bounds-p ls i)
513 (format-symbol *pcl-package* ".L~D." i)))))
514 ;; Loop over supplied initargs and values and record which
515 ;; instance and class slots they initialize.
516 (loop for (key value) on initargs by #'cddr
517 as locations = (initarg-locations key) do
518 (if (constantp value)
519 (dolist (location locations)
521 (class-init location 'constant value)
522 (instance-init location 'constant value)))
523 (dolist (location locations)
525 (class-init location 'param value)
526 (instance-init location 'param value)))))
527 ;; Loop over default initargs of the class, recording
528 ;; initializations of slots that have not been initialized
529 ;; above. Default initargs which are not in the supplied
530 ;; initargs are treated as if they were appended to supplied
531 ;; initargs, that is, their values must be evaluated even
532 ;; if not actually used for initializing a slot.
533 (loop for (key initform initfn) in default-initargs and i from 0
534 unless (member key initkeys :test #'eq) do
535 (let* ((type (if (constantp initform) 'constant 'var))
536 (init (if (eq type 'var) initfn initform)))
539 (push key defaulting-initargs)
540 (push initform defaulting-initargs))
542 (push key defaulting-initargs)
543 (push (default-init-var-name i) defaulting-initargs)))
545 (let ((init-var (default-init-var-name i)))
547 (push (cons init-var initfn) default-inits)))
548 (dolist (location (initarg-locations key))
550 (class-init location type init)
551 (instance-init location type init)))))
552 ;; Loop over all slots of the class, filling in the rest from
554 (loop for slotd in (class-slots class)
555 as location = (slot-definition-location slotd)
556 as allocation = (slot-definition-allocation slotd)
557 as initfn = (slot-definition-initfunction slotd)
558 as initform = (slot-definition-initform slotd) do
559 (unless (or (eq allocation :class)
561 (initializedp location))
562 (if (constantp initform)
563 (instance-init location 'initform initform)
564 (instance-init location 'initform/initfn initfn))))
565 ;; Generate the forms for initializing instance and class slots.
566 (let ((instance-init-forms
567 (loop for slot-entry across slot-vector and i from 0
568 as (type value) = slot-entry collect
571 (unless before-method-p
572 `(setf (clos-slots-ref .slots. ,i) +slot-unbound+)))
574 `(setf (clos-slots-ref .slots. ,i) ,value))
576 `(setf (clos-slots-ref .slots. ,i) (funcall ,value)))
579 `(when (eq (clos-slots-ref .slots. ,i)
581 (setf (clos-slots-ref .slots. ,i)
583 `(setf (clos-slots-ref .slots. ,i)
587 `(when (eq (clos-slots-ref .slots. ,i)
589 (setf (clos-slots-ref .slots. ,i)
591 `(setf (clos-slots-ref .slots. ,i)
594 `(setf (clos-slots-ref .slots. ,i) ',(eval value)))))))
595 ;; we are not allowed to modify QUOTEd locations, so we can't
596 ;; generate code like (setf (cdr ',location) arg). Instead,
597 ;; we have to do (setf (cdr .L0.) arg) and arrange for .L0. to
598 ;; be bound to the location.
599 (multiple-value-bind (names locations class-init-forms)
600 (loop for (location type value) in class-inits
602 for name = (location-var-name i)
603 collect name into names
604 collect location into locations
605 collect `(setf (cdr ,name)
607 (constant `',(eval value))
608 ((param var) `,value)
609 (initfn `(funcall ,value))))
610 into class-init-forms
611 finally (return (values names locations class-init-forms)))
612 (multiple-value-bind (vars bindings)
613 (loop for (var . initfn) in (nreverse default-inits)
614 collect var into vars
615 collect `(,var (funcall ,initfn)) into bindings
616 finally (return (values vars bindings)))
617 (values locations names
619 (nreverse defaulting-initargs)
620 `(,@(delete nil instance-init-forms)
621 ,@class-init-forms))))))))
623 ;;; Return an alist of lists (KEY LOCATION ...) telling, for each
624 ;;; key in INITKEYS, which locations the initarg initializes.
625 ;;; CLASS is the class of the instance being initialized.
626 (defun compute-initarg-locations (class initkeys)
627 (loop with slots = (class-slots class)
628 for key in initkeys collect
629 (loop for slot in slots
630 if (memq key (slot-definition-initargs slot))
631 collect (slot-definition-location slot) into locations
633 collect slot into remaining-slots
635 (setq slots remaining-slots)
636 (return (cons key locations)))))
639 ;;; *******************************
640 ;;; External Entry Points ********
641 ;;; *******************************
643 (defun update-ctors (reason &key class name generic-function method)
644 (labels ((reset (class &optional ri-cache-p (ctorsp t))
646 (dolist (ctor (plist-value class 'ctors))
647 (install-initial-constructor ctor)))
649 (setf (plist-value class 'ri-initargs) ()))
650 (dolist (subclass (class-direct-subclasses class))
651 (reset subclass ri-cache-p ctorsp))))
653 ;; CLASS must have been specified.
654 (finalize-inheritance
656 ;; NAME must have been specified.
658 (loop for ctor in *all-ctors*
659 when (eq (ctor-class-name ctor) name) do
660 (when (ctor-class ctor)
661 (reset (ctor-class ctor)))
663 ;; GENERIC-FUNCTION and METHOD must have been specified.
664 ((add-method remove-method)
665 (flet ((class-of-1st-method-param (method)
666 (type-class (first (method-specializers method)))))
667 (case (generic-function-name generic-function)
668 ((make-instance allocate-instance
669 initialize-instance shared-initialize)
670 (reset (class-of-1st-method-param method) t t))
671 ((reinitialize-instance)
672 (reset (class-of-1st-method-param method) t nil))
673 (t (when (or (eq (generic-function-name generic-function)
674 'slot-boundp-using-class)
675 (equal (generic-function-name generic-function)
676 '(setf slot-value-using-class)))
677 ;; this looks awfully expensive, but given that one
678 ;; can specialize on the SLOTD argument, nothing is
679 ;; safe. -- CSR, 2004-07-12
680 (reset (find-class 'standard-object))))))))))
682 (defun precompile-ctors ()
683 (dolist (ctor *all-ctors*)
684 (when (null (ctor-class ctor))
685 (let ((class (find-class (ctor-class-name ctor) nil)))
686 (when (and class (class-finalized-p class))
687 (install-optimized-constructor ctor))))))
689 (defun check-ri-initargs (instance initargs)
690 (let* ((class (class-of instance))
691 (keys (plist-keys initargs))
692 (cached (assoc keys (plist-value class 'ri-initargs)
698 ;; FIXME: give CHECK-INITARGS-1 and friends a
699 ;; more mnemonic name and (possibly) a nicer,
700 ;; more orthogonal interface.
703 (list (list* 'reinitialize-instance instance initargs)
704 (list* 'shared-initialize instance nil initargs))
706 (setf (plist-value class 'ri-initargs)
707 (acons keys invalid cached))
710 (error 'initarg-error :class class :initargs invalid-keys))))