1 ;;;; This file defines the optimized make-instance functions.
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; This software is derived from software originally released by Xerox
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8 ;;;; to the software are in the public domain and are provided with
9 ;;;; absolutely no warranty. See the COPYING and CREDITS files for more
12 ;;;; copyright information from original PCL sources:
14 ;;;; Copyright (c) 1985, 1986, 1987, 1988, 1989, 1990 Xerox Corporation.
15 ;;;; All rights reserved.
17 ;;;; Use and copying of this software and preparation of derivative works based
18 ;;;; upon this software are permitted. Any distribution of this software or
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22 ;;;; This software is made available AS IS, and Xerox Corporation makes no
23 ;;;; warranty about the software, its performance or its conformity to any
28 (defvar *compile-make-instance-functions-p* nil)
30 (defun update-make-instance-function-table (&optional (class *the-class-t*))
31 (when (symbolp class) (setq class (find-class class)))
32 (when (eq class *the-class-t*) (setq class *the-class-slot-object*))
33 (when (memq *the-class-slot-object* (class-precedence-list class))
34 (map-all-classes #'reset-class-initialize-info class)))
36 (defun constant-symbol-p (form)
38 (let ((object (eval form)))
40 (symbol-package object)))))
42 (defvar *make-instance-function-keys* nil)
44 (defun expand-make-instance-form (form)
45 (let ((class (cadr form)) (initargs (cddr form))
46 (keys nil)(allow-other-keys-p nil) key value)
47 (when (and (constant-symbol-p class)
48 (let ((initargs-tail initargs))
49 (loop (when (null initargs-tail) (return t))
50 (unless (constant-symbol-p (car initargs-tail))
52 (setq key (eval (pop initargs-tail)))
53 (setq value (pop initargs-tail))
54 (when (eq ':allow-other-keys key)
55 (setq allow-other-keys-p value))
57 (let* ((class (eval class))
58 (keys (nreverse keys))
59 (key (list class keys allow-other-keys-p))
60 (sym (make-instance-function-symbol key)))
61 (push key *make-instance-function-keys*)
63 `(,sym ',class (list ,@initargs)))))))
65 (defmacro expanding-make-instance-top-level (&rest forms &environment env)
66 (let* ((*make-instance-function-keys* nil)
67 (form (macroexpand `(expanding-make-instance ,@forms) env)))
69 ,@(when *make-instance-function-keys*
70 `((get-make-instance-functions ',*make-instance-function-keys*)))
73 (defmacro expanding-make-instance (&rest forms &environment env)
75 ,@(mapcar #'(lambda (form)
77 #'(lambda (subform context env)
78 (declare (ignore env))
79 (or (and (eq context ':eval)
81 (eq (car subform) 'make-instance)
82 (expand-make-instance-form subform))
86 (defmacro defconstructor
87 (name class lambda-list &rest initialization-arguments)
88 `(expanding-make-instance-top-level
89 (defun ,name ,lambda-list
90 (make-instance ',class ,@initialization-arguments))))
92 (defun get-make-instance-functions (key-list)
93 (dolist (key key-list)
94 (let* ((cell (find-class-cell (car key)))
95 (make-instance-function-keys
96 (find-class-cell-make-instance-function-keys cell))
97 (mif-key (cons (cadr key) (caddr key))))
98 (unless (find mif-key make-instance-function-keys
100 (push mif-key (find-class-cell-make-instance-function-keys cell))
101 (let ((class (find-class-cell-class cell)))
102 (when (and class (not (forward-referenced-class-p class)))
103 (update-initialize-info-internal
104 (initialize-info class (car mif-key) nil (cdr mif-key))
105 'make-instance-function)))))))
107 (defun make-instance-function-symbol (key)
108 (let* ((class (car key))
109 (symbolp (symbolp class)))
110 (when (or symbolp (classp class))
111 (let* ((class-name (if (symbolp class) class (class-name class)))
113 (allow-other-keys-p (caddr key)))
114 (when (and (or symbolp
115 (and (symbolp class-name)
116 (eq class (find-class class-name nil))))
117 (symbol-package class-name))
118 (let ((*package* *pcl-package*)
122 (*print-case* :upcase)
123 (*print-pretty* nil))
125 "MAKE-INSTANCE ~S ~S ~S"
128 allow-other-keys-p))))))))
130 (defun make-instance-1 (class initargs)
131 (apply #'make-instance class initargs))
133 (defmacro define-cached-reader (type name trap)
134 (let ((reader-name (intern (format nil "~A-~A" type name)))
135 (cached-name (intern (format nil "~A-CACHED-~A" type name))))
136 `(defmacro ,reader-name (info)
137 `(let ((value (,',cached-name ,info)))
138 (if (eq value ':unknown)
140 (,',trap ,info ',',name)
141 (,',cached-name ,info))
144 (eval-when (:compile-toplevel :load-toplevel :execute)
145 (defparameter *initialize-info-cached-slots*
146 '(valid-p ; t or (:invalid key)
150 default-initargs-function
151 shared-initialize-t-function
152 shared-initialize-nil-function
154 combined-initialize-function ; allocate-instance + shared-initialize
155 make-instance-function ; nil means use gf
156 make-instance-function-symbol)))
158 (defmacro define-initialize-info ()
159 (let ((cached-slot-names
160 (mapcar #'(lambda (name)
161 (intern (format nil "CACHED-~A" name)))
162 *initialize-info-cached-slots*))
164 (mapcar #'(lambda (name)
165 (intern (format nil "~A-CACHED-~A"
166 'initialize-info name)))
167 *initialize-info-cached-slots*)))
169 (defstruct initialize-info
171 ,@(mapcar #'(lambda (name)
174 (defmacro reset-initialize-info-internal (info)
176 ,@(mapcar #'(lambda (cname)
177 `(setf (,cname ,info) ':unknown))
179 (defun initialize-info-bound-slots (info)
181 ,@(mapcar #'(lambda (name cached-name)
182 `(unless (eq ':unknown (,cached-name info))
183 (push ',name slots)))
184 *initialize-info-cached-slots* cached-names)
186 ,@(mapcar #'(lambda (name)
187 `(define-cached-reader initialize-info ,name
188 update-initialize-info-internal))
189 *initialize-info-cached-slots*))))
191 (define-initialize-info)
193 (defvar *initialize-info-cache-class* nil)
194 (defvar *initialize-info-cache-initargs* nil)
195 (defvar *initialize-info-cache-info* nil)
197 (defvar *revert-initialize-info-p* nil)
199 (defun reset-initialize-info (info)
200 (setf (initialize-info-wrapper info)
201 (class-wrapper (car (initialize-info-key info))))
202 (let ((slots-to-revert (if *revert-initialize-info-p*
203 (initialize-info-bound-slots info)
204 '(make-instance-function))))
205 (reset-initialize-info-internal info)
206 (dolist (slot slots-to-revert)
207 (update-initialize-info-internal info slot))
210 (defun reset-class-initialize-info (class)
211 (reset-class-initialize-info-1 (class-initialize-info class)))
213 (defun reset-class-initialize-info-1 (cell)
216 (reset-initialize-info (car cell)))
217 (let ((alist (cdr cell)))
219 (reset-class-initialize-info-1 (cdr a))))))
221 (defun initialize-info (class initargs &optional (plist-p t) allow-other-keys-arg)
223 (if (and (eq *initialize-info-cache-class* class)
224 (eq *initialize-info-cache-initargs* initargs))
225 (setq info *initialize-info-cache-info*)
226 (let ((initargs-tail initargs)
227 (cell (or (class-initialize-info class)
228 (setf (class-initialize-info class) (cons nil nil)))))
229 (loop (when (null initargs-tail) (return nil))
230 (let ((keyword (pop initargs-tail))
233 (if (eq keyword :allow-other-keys)
234 (setq allow-other-keys-arg (pop initargs-tail))
235 (pop initargs-tail)))
236 (loop (let ((alist (cdr alist-cell)))
238 (setq cell (cons nil nil))
239 (setf (cdr alist-cell) (list (cons keyword cell)))
241 (when (eql keyword (caar alist))
242 (setq cell (cdar alist))
244 (setq alist-cell alist)))))
245 (setq info (or (car cell)
246 (setf (car cell) (make-initialize-info))))))
247 (let ((wrapper (initialize-info-wrapper info)))
248 (unless (eq wrapper (class-wrapper class))
250 (let* ((initargs-tail initargs)
251 (klist-cell (list nil))
252 (klist-tail klist-cell))
253 (loop (when (null initargs-tail) (return nil))
254 (let ((key (pop initargs-tail)))
255 (setf (cdr klist-tail) (list key)))
256 (setf klist-tail (cdr klist-tail))
257 (when plist-p (pop initargs-tail)))
258 (setf (initialize-info-key info)
259 (list class (cdr klist-cell) allow-other-keys-arg))))
260 (reset-initialize-info info)))
261 (setq *initialize-info-cache-class* class)
262 (setq *initialize-info-cache-initargs* initargs)
263 (setq *initialize-info-cache-info* info)
266 (defun update-initialize-info-internal (info name)
267 (let* ((key (initialize-info-key info))
270 (allow-other-keys-arg (caddr key)))
272 ((initargs-form-list new-keys)
273 (multiple-value-bind (initargs-form-list new-keys)
274 (make-default-initargs-form-list class keys)
275 (setf (initialize-info-cached-initargs-form-list info) initargs-form-list)
276 (setf (initialize-info-cached-new-keys info) new-keys)))
277 ((default-initargs-function)
278 (let ((initargs-form-list (initialize-info-initargs-form-list info)))
279 (setf (initialize-info-cached-default-initargs-function info)
280 (initialize-instance-simple-function
281 'default-initargs-function info
282 class initargs-form-list))))
283 ((valid-p ri-valid-p)
284 (flet ((compute-valid-p (methods)
285 (or (not (null allow-other-keys-arg))
286 (multiple-value-bind (legal allow-other-keys)
287 (check-initargs-values class methods)
288 (or (not (null allow-other-keys))
290 (unless (member key legal)
291 (return (cons :invalid key)))))))))
292 (let ((proto (class-prototype class)))
293 (setf (initialize-info-cached-valid-p info)
295 (list (list* 'allocate-instance class nil)
296 (list* 'initialize-instance proto nil)
297 (list* 'shared-initialize proto t nil))))
298 (setf (initialize-info-cached-ri-valid-p info)
300 (list (list* 'reinitialize-instance proto nil)
301 (list* 'shared-initialize proto nil nil)))))))
302 ((shared-initialize-t-function)
303 (multiple-value-bind (initialize-form-list ignore)
304 (make-shared-initialize-form-list class keys t nil)
305 (declare (ignore ignore))
306 (setf (initialize-info-cached-shared-initialize-t-function info)
307 (initialize-instance-simple-function
308 'shared-initialize-t-function info
309 class initialize-form-list))))
310 ((shared-initialize-nil-function)
311 (multiple-value-bind (initialize-form-list ignore)
312 (make-shared-initialize-form-list class keys nil nil)
313 (declare (ignore ignore))
314 (setf (initialize-info-cached-shared-initialize-nil-function info)
315 (initialize-instance-simple-function
316 'shared-initialize-nil-function info
317 class initialize-form-list))))
318 ((constants combined-initialize-function)
319 (let ((initargs-form-list (initialize-info-initargs-form-list info))
320 (new-keys (initialize-info-new-keys info)))
321 (multiple-value-bind (initialize-form-list constants)
322 (make-shared-initialize-form-list class new-keys t t)
323 (setf (initialize-info-cached-constants info) constants)
324 (setf (initialize-info-cached-combined-initialize-function info)
325 (initialize-instance-simple-function
326 'combined-initialize-function info
327 class (append initargs-form-list initialize-form-list))))))
328 ((make-instance-function-symbol)
329 (setf (initialize-info-cached-make-instance-function-symbol info)
330 (make-instance-function-symbol key)))
331 ((make-instance-function)
332 (let* ((function (get-make-instance-function key))
333 (symbol (initialize-info-make-instance-function-symbol info)))
334 (setf (initialize-info-cached-make-instance-function info) function)
335 (when symbol (setf (gdefinition symbol)
336 (or function #'make-instance-1)))))))
339 (defun get-make-instance-function (key)
340 (let* ((class (car key))
342 (unless (eq *boot-state* 'complete)
343 (return-from get-make-instance-function nil))
344 (when (symbolp class)
345 (setq class (find-class class)))
347 (unless (class-finalized-p class) (finalize-inheritance class)))
348 (let* ((initargs (mapcan #'(lambda (key) (list key nil)) keys))
349 (class-and-initargs (list* class initargs))
350 (make-instance (gdefinition 'make-instance))
351 (make-instance-methods
352 (compute-applicable-methods make-instance class-and-initargs))
353 (std-mi-meth (find-standard-ii-method make-instance-methods 'class))
354 (class+initargs (list class initargs))
355 (default-initargs (gdefinition 'default-initargs))
356 (default-initargs-methods
357 (compute-applicable-methods default-initargs class+initargs))
358 (proto (and (classp class) (class-prototype class)))
359 (initialize-instance-methods
361 (compute-applicable-methods (gdefinition 'initialize-instance)
362 (list* proto initargs))))
363 (shared-initialize-methods
365 (compute-applicable-methods (gdefinition 'shared-initialize)
366 (list* proto t initargs)))))
367 (when (null make-instance-methods)
368 (return-from get-make-instance-function
369 #'(lambda (class initargs)
370 (apply #'no-applicable-method make-instance class initargs))))
371 (unless (and (null (cdr make-instance-methods))
372 (eq (car make-instance-methods) std-mi-meth)
373 (null (cdr default-initargs-methods))
374 (eq (car (method-specializers (car default-initargs-methods)))
375 *the-class-slot-class*)
376 (flet ((check-meth (meth)
377 (let ((quals (method-qualifiers meth)))
379 (eq (car (method-specializers meth))
380 *the-class-slot-object*)
381 (and (null (cdr quals))
382 (or (eq (car quals) ':before)
383 (eq (car quals) ':after)))))))
384 (and (every #'check-meth initialize-instance-methods)
385 (every #'check-meth shared-initialize-methods))))
386 (return-from get-make-instance-function nil))
387 (get-make-instance-function-internal
388 class key (default-initargs class initargs)
389 initialize-instance-methods shared-initialize-methods))))
391 (defun get-make-instance-function-internal (class key initargs
392 initialize-instance-methods
393 shared-initialize-methods)
394 (let* ((keys (cadr key))
395 (allow-other-keys-p (caddr key))
396 (allocate-instance-methods
397 (compute-applicable-methods (gdefinition 'allocate-instance)
398 (list* class initargs))))
399 (unless allow-other-keys-p
400 (unless (check-initargs-1
402 (append allocate-instance-methods
403 initialize-instance-methods
404 shared-initialize-methods)
406 (return-from get-make-instance-function-internal nil)))
407 (if (or (cdr allocate-instance-methods)
408 (some #'complicated-instance-creation-method
409 initialize-instance-methods)
410 (some #'complicated-instance-creation-method
411 shared-initialize-methods))
412 (make-instance-function-complex
414 initialize-instance-methods shared-initialize-methods)
415 (make-instance-function-simple
417 initialize-instance-methods shared-initialize-methods))))
419 (defun complicated-instance-creation-method (m)
420 (let ((qual (method-qualifiers m)))
422 (not (and (null (cdr qual)) (eq (car qual) ':after)))
423 (let ((specl (car (method-specializers m))))
424 (or (not (classp specl))
425 (not (eq 'slot-object (class-name specl))))))))
427 (defun find-standard-ii-method (methods class-names)
429 (when (null (method-qualifiers m))
430 (let ((specl (car (method-specializers m))))
431 (when (and (classp specl)
432 (if (listp class-names)
433 (member (class-name specl) class-names)
434 (eq (class-name specl) class-names)))
437 (defmacro call-initialize-function (initialize-function instance initargs)
438 `(let ((.function. ,initialize-function))
439 (if (and (consp .function.)
440 (eq (car .function.) 'call-initialize-instance-simple))
441 (initialize-instance-simple (cadr .function.) (caddr .function.)
443 (funcall (the function .function.) ,instance ,initargs))))
445 (defun make-instance-function-simple (key class keys
446 initialize-instance-methods
447 shared-initialize-methods)
448 (multiple-value-bind (initialize-function constants)
449 (get-simple-initialization-function class keys (caddr key))
450 (let* ((wrapper (class-wrapper class))
451 (lwrapper (list wrapper))
453 (cond ((structure-class-p class)
454 #'allocate-structure-instance)
455 ((standard-class-p class)
456 #'allocate-standard-instance)
457 ((funcallable-standard-class-p class)
458 #'allocate-funcallable-instance)
460 (error "error in make-instance-function-simple"))))
461 (std-si-meth (find-standard-ii-method shared-initialize-methods
464 (nreverse (mapcar #'(lambda (method)
465 (make-effective-method-function
467 `(call-method ,method nil)
469 (remove std-si-meth shared-initialize-methods))))
470 (std-ii-meth (find-standard-ii-method initialize-instance-methods
473 (nreverse (mapcar #'(lambda (method)
474 (make-effective-method-function
475 #'initialize-instance
476 `(call-method ,method nil)
479 initialize-instance-methods)))))
480 #'(lambda (class1 initargs)
481 (if (not (eq wrapper (class-wrapper class)))
482 (let* ((info (initialize-info class1 initargs))
483 (fn (initialize-info-make-instance-function info)))
484 (declare (type function fn))
485 (funcall fn class1 initargs))
486 (let* ((instance (funcall allocate-function wrapper constants))
487 (initargs (call-initialize-function initialize-function
489 (dolist (fn shared-initfns)
490 (invoke-effective-method-function fn t instance t initargs))
491 (dolist (fn initialize-initfns)
492 (invoke-effective-method-function fn t instance initargs))
495 (defun make-instance-function-complex (key class keys
496 initialize-instance-methods
497 shared-initialize-methods)
498 (multiple-value-bind (initargs-function initialize-function)
499 (get-complex-initialization-functions class keys (caddr key))
500 (let* ((wrapper (class-wrapper class))
502 (get-secondary-dispatch-function
503 #'shared-initialize shared-initialize-methods
504 `((class-eq ,class) t t)
505 `((,(find-standard-ii-method shared-initialize-methods 'slot-object)
506 ,#'(lambda (instance init-type &rest initargs)
507 (declare (ignore init-type))
508 (call-initialize-function initialize-function
511 (list wrapper *the-wrapper-of-t* *the-wrapper-of-t*)))
513 (get-secondary-dispatch-function
514 #'initialize-instance initialize-instance-methods
515 `((class-eq ,class) t)
516 `((,(find-standard-ii-method initialize-instance-methods 'slot-object)
517 ,#'(lambda (instance &rest initargs)
518 (invoke-effective-method-function
519 shared-initialize t instance t initargs))))
520 (list wrapper *the-wrapper-of-t*))))
521 #'(lambda (class1 initargs)
522 (if (not (eq wrapper (class-wrapper class)))
523 (let* ((info (initialize-info class1 initargs))
524 (fn (initialize-info-make-instance-function info)))
525 (declare (type function fn))
526 (funcall fn class1 initargs))
527 (let* ((initargs (call-initialize-function initargs-function
529 (instance (apply #'allocate-instance class initargs)))
530 (invoke-effective-method-function
531 initialize-instance t instance initargs)
534 (defun get-simple-initialization-function (class keys &optional allow-other-keys-arg)
535 (let ((info (initialize-info class keys nil allow-other-keys-arg)))
536 (values (initialize-info-combined-initialize-function info)
537 (initialize-info-constants info))))
539 (defun get-complex-initialization-functions (class keys &optional allow-other-keys-arg
541 (let* ((info (initialize-info class keys nil allow-other-keys-arg))
542 (default-initargs-function (initialize-info-default-initargs-function info)))
544 (values default-initargs-function
545 (initialize-info-shared-initialize-t-function info))
546 (values default-initargs-function
547 (initialize-info-shared-initialize-t-function
548 (initialize-info class (initialize-info-new-keys info)
549 nil allow-other-keys-arg))))))
551 (defun add-forms (forms forms-list)
553 (setq forms (copy-list forms))
554 (if (null (car forms-list))
555 (setf (car forms-list) forms)
556 (setf (cddr forms-list) forms))
557 (setf (cdr forms-list) (last forms)))
560 (defun make-default-initargs-form-list (class keys &optional (separate-p t))
561 (let ((initargs-form-list (cons nil nil))
562 (default-initargs (class-default-initargs class))
565 (mapcan #'(lambda (slot)
566 (mapcar #'(lambda (arg)
568 (slot-definition-initargs slot)))
569 (class-slots class)))
572 (pushnew (cdr (assoc key slots-alist)) nslots))
573 (dolist (default default-initargs)
574 (let* ((key (car default))
575 (slot (cdr (assoc key slots-alist)))
576 (function (cadr default)))
577 (unless (member slot nslots)
578 (add-forms `((funcall ,function) (push-initarg ,key))
581 (push slot nslots))))
583 (add-forms `((update-initialize-info-cache
584 ,class ,(initialize-info class nkeys nil)))
586 (add-forms `((finish-pushing-initargs))
588 (values (car initargs-form-list) nkeys)))
590 (defun make-shared-initialize-form-list (class keys si-slot-names simple-p)
591 (let* ((initialize-form-list (cons nil nil))
592 (type (cond ((structure-class-p class)
594 ((standard-class-p class)
596 ((funcallable-standard-class-p class)
598 (t (error "error in make-shared-initialize-form-list"))))
599 (wrapper (class-wrapper class))
600 (constants (when simple-p
601 (make-list (wrapper-no-of-instance-slots wrapper)
602 ':initial-element +slot-unbound+)))
603 (slots (class-slots class))
604 (slot-names (mapcar #'slot-definition-name slots))
605 (slots-key (mapcar #'(lambda (slot)
606 (let ((index most-positive-fixnum))
607 (dolist (key (slot-definition-initargs slot))
608 (let ((pos (position key keys)))
609 (when pos (setq index (min index pos)))))
612 (slots (stable-sort slots-key #'< :key #'cdr)))
614 (dolist (slot+index slots)
615 (let* ((slot (car slot+index))
616 (name (slot-definition-name slot))
617 (npop (1+ (- (cdr slot+index) n-popped))))
618 (unless (eql (cdr slot+index) most-positive-fixnum)
619 (let* ((pv-offset (1+ (position name slot-names))))
620 (add-forms `(,@(when (plusp npop)
621 `((pop-initargs ,(* 2 npop))))
622 (instance-set ,pv-offset ,slot))
623 initialize-form-list))
624 (incf n-popped npop)))))
625 (dolist (slot+index slots)
626 (let* ((slot (car slot+index))
627 (name (slot-definition-name slot)))
628 (when (and (eql (cdr slot+index) most-positive-fixnum)
629 (or (eq si-slot-names 't)
630 (member name si-slot-names)))
631 (let* ((initform (slot-definition-initform slot))
632 (initfunction (slot-definition-initfunction slot))
633 (location (unless (eq type 'structure)
634 (slot-definition-location slot)))
635 (pv-offset (1+ (position name slot-names)))
636 (forms (cond ((null initfunction)
638 ((constantp initform)
639 (let ((value (funcall initfunction)))
640 (if (and simple-p (integerp location))
641 (progn (setf (nth location constants) value)
644 (instance-set ,pv-offset ,slot)))))
646 `((funcall ,(slot-definition-initfunction slot))
647 (instance-set ,pv-offset ,slot))))))
648 (add-forms `(,@(unless (or simple-p (null forms))
649 `((skip-when-instance-boundp ,pv-offset ,slot
652 initialize-form-list)))))
653 (values (car initialize-form-list) constants)))
655 (defvar *class-pv-table-table* (make-hash-table :test 'eq))
657 (defun get-pv-cell-for-class (class)
658 (let* ((slot-names (mapcar #'slot-definition-name (class-slots class)))
659 (slot-name-lists (list (cons nil slot-names)))
660 (pv-table (gethash class *class-pv-table-table*)))
661 (unless (and pv-table
662 (equal slot-name-lists (pv-table-slot-name-lists pv-table)))
663 (setq pv-table (intern-pv-table :slot-name-lists slot-name-lists))
664 (setf (gethash class *class-pv-table-table*) pv-table))
665 (pv-table-lookup pv-table (class-wrapper class))))
667 (defvar *initialize-instance-simple-alist* nil)
668 (defvar *note-iis-entry-p* nil)
670 (defvar *compiled-initialize-instance-simple-functions*
671 (make-hash-table :test 'equal))
673 (defun initialize-instance-simple-function (use info class form-list)
674 (let* ((pv-cell (get-pv-cell-for-class class))
675 (key (initialize-info-key info))
676 (sf-key (list* use (class-name (car key)) (cdr key))))
677 (if (or *compile-make-instance-functions-p*
678 (gethash sf-key *compiled-initialize-instance-simple-functions*))
679 (multiple-value-bind (form args)
680 (form-list-to-lisp pv-cell form-list)
681 (let ((entry (assoc form *initialize-instance-simple-alist*
683 (setf (gethash sf-key
684 *compiled-initialize-instance-simple-functions*)
687 (setf (cdddr entry) (union (list sf-key) (cdddr entry)
690 (setq entry (list* form nil nil (list sf-key)))
691 (setq *initialize-instance-simple-alist*
692 (nconc *initialize-instance-simple-alist*
694 (unless (or *note-iis-entry-p* (cadr entry))
695 (setf (cadr entry) (compile-lambda (car entry))))
697 (apply (the function (cadr entry)) args)
698 `(call-initialize-instance-simple ,pv-cell ,form-list))))
700 #'(lambda (instance initargs)
701 (initialize-instance-simple pv-cell form-list instance initargs))
703 `(call-initialize-instance-simple ,pv-cell ,form-list))))
705 (defun load-precompiled-iis-entry (form function system uses)
706 (let ((entry (assoc form *initialize-instance-simple-alist*
709 (setq entry (list* form nil nil nil))
710 (setq *initialize-instance-simple-alist*
711 (nconc *initialize-instance-simple-alist*
713 (setf (cadr entry) function)
714 (setf (caddr entry) system)
716 (setf (gethash use *compiled-initialize-instance-simple-functions*) t))
717 (setf (cdddr entry) (union uses (cdddr entry)
720 (defmacro precompile-iis-functions (&optional system)
723 ,@(gathering1 (collecting)
724 (dolist (iis-entry *initialize-instance-simple-alist*)
725 (when (or (null (caddr iis-entry))
726 (eq (caddr iis-entry) system))
727 (when system (setf (caddr iis-entry) system))
730 `(precompile-initialize-instance-simple ,system ,(incf index))
732 `(load-precompiled-iis-entry
736 ',(cdddr iis-entry))))))))))
738 (defun compile-iis-functions (after-p)
739 (let ((*compile-make-instance-functions-p* t)
740 (*revert-initialize-info-p* t)
741 (*note-iis-entry-p* (not after-p)))
742 (declare (special *compile-make-instance-functions-p*))
743 (when (eq *boot-state* 'complete)
744 (update-make-instance-function-table))))
748 ;(push-initarg const)
749 ;(pop-supplied count) ; a positive odd number
750 ;(instance-set pv-offset slotd)
751 ;(skip-when-instance-boundp pv-offset slotd n)
753 (defun initialize-instance-simple (pv-cell form-list instance initargs)
754 (let ((pv (car pv-cell))
755 (initargs-tail initargs)
756 (slots (get-slots-or-nil instance))
757 (class (class-of instance))
759 (loop (when (null form-list) (return nil))
760 (let ((form (pop form-list)))
763 (push value initargs)
764 (push (cadr form) initargs))
766 (setq value (cadr form)))
768 (setq value (funcall (the function (cadr form)))))
770 (setq initargs-tail (nthcdr (1- (cadr form)) initargs-tail))
771 (setq value (pop initargs-tail)))
773 (instance-write-internal
774 pv slots (cadr form) value
775 (setf (slot-value-using-class class instance (caddr form))
777 (skip-when-instance-boundp
778 (when (instance-boundp-internal
780 (slot-boundp-using-class class instance (caddr form)))
781 (dotimes-fixnum (i (cadddr form))
783 (update-initialize-info-cache
784 (when (consp initargs)
785 (setq initargs (cons (car initargs) (cdr initargs))))
786 (setq *initialize-info-cache-class* (cadr form))
787 (setq *initialize-info-cache-initargs* initargs)
788 (setq *initialize-info-cache-info* (caddr form)))
789 (finish-pushing-initargs
790 (setq initargs-tail initargs)))))
793 (defun add-to-cvector (cvector constant)
794 (or (position constant cvector)
795 (prog1 (fill-pointer cvector)
796 (vector-push-extend constant cvector))))
798 (defvar *inline-iis-instance-locations-p* t)
800 (defun first-form-to-lisp (forms cvector pv)
801 (flet ((const (constant)
802 (cond ((or (numberp constant) (characterp constant))
804 ((and (symbolp constant) (symbol-package constant))
807 `(svref cvector ,(add-to-cvector cvector constant))))))
808 (let ((form (pop (car forms))))
811 `((push value initargs)
812 (push ,(const (cadr form)) initargs)))
814 `((setq value ,(const (cadr form)))))
816 `((setq value (funcall (the function ,(const (cadr form)))))))
818 `((setq initargs-tail (,@(let ((pop (1- (cadr form))))
824 (setq value (pop initargs-tail))))
826 (let* ((pv-offset (cadr form))
827 (location (pvref pv pv-offset))
828 (default `(setf (slot-value-using-class class instance
829 ,(const (caddr form)))
831 (if *inline-iis-instance-locations-p*
833 (fixnum `((setf (%instance-ref slots ,(const location)) value)))
834 (cons `((setf (cdr ,(const location)) value)))
836 `((instance-write-internal pv slots ,(const pv-offset) value
842 (skip-when-instance-boundp
843 (let* ((pv-offset (cadr form))
844 (location (pvref pv pv-offset))
845 (default `(slot-boundp-using-class class instance
846 ,(const (caddr form)))))
847 `((unless ,(if *inline-iis-instance-locations-p*
849 (fixnum `(not (eq (%instance-ref slots ,(const location))
851 (cons `(not (eq (cdr ,(const location)) +slot-unbound+)))
853 `(instance-boundp-internal pv slots ,(const pv-offset)
855 ,(typecase (pvref pv pv-offset)
859 ,@(let ((sforms (cons nil nil)))
860 (dotimes-fixnum (i (cadddr form) (car sforms))
861 (add-forms (first-form-to-lisp forms cvector pv) sforms)))))))
862 (update-initialize-info-cache
863 `((when (consp initargs)
864 (setq initargs (cons (car initargs) (cdr initargs))))
865 (setq *initialize-info-cache-class* ,(const (cadr form)))
866 (setq *initialize-info-cache-initargs* initargs)
867 (setq *initialize-info-cache-info* ,(const (caddr form)))))
868 (finish-pushing-initargs
869 `((setq initargs-tail initargs)))))))
871 (defmacro iis-body (&body forms)
872 `(let ((initargs-tail initargs)
873 (slots (get-slots-or-nil instance))
874 (class (class-of instance))
877 initargs instance initargs-tail pv cvector slots class value
880 (defun form-list-to-lisp (pv-cell form-list)
881 (let* ((forms (list form-list))
882 (cvector (make-array (floor (length form-list) 2)
883 :fill-pointer 0 :adjustable t))
885 (body (let ((rforms (cons nil nil)))
886 (loop (when (null (car forms)) (return (car rforms)))
887 (add-forms (first-form-to-lisp forms cvector pv)
889 (cvector-type `(simple-vector ,(length cvector))))
891 `(lambda (pv-cell cvector)
892 (declare (type ,cvector-type cvector))
893 #'(lambda (instance initargs)
894 (declare #.*optimize-speed*)
897 (list pv-cell (coerce cvector cvector-type)))))
899 ;;; The effect of this is to cause almost all of the overhead of MAKE-INSTANCE
900 ;;; to happen at load time (or maybe at precompile time, as explained in a
901 ;;; previous message) rather than the first time that MAKE-INSTANCE is called
902 ;;; with a given class-name and sequence of keywords.
904 ;;; This optimization applies only when the first argument and all the even
905 ;;; numbered arguments are constants evaluating to interned symbols.
907 (declaim (ftype (function (t) symbol) get-make-instance-function-symbol))
909 (define-compiler-macro make-instance (&whole form &rest args)
910 (declare (ignore args))
911 (let* ((*make-instance-function-keys* nil)
912 (expanded-form (expand-make-instance-form form)))
914 `(funcall (symbol-function
915 ;; The symbol is guaranteed to be fbound.
916 ;; Is there a way to declare this?
918 (get-make-instance-function-symbol
919 ',(first *make-instance-function-keys*))))
920 ,@(cdr expanded-form))
923 (defun get-make-instance-function-symbol (key)
924 (get-make-instance-functions (list key))
925 (make-instance-function-symbol key))