1 ;;;; heap-grovelling memory usage stuff
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; This software is derived from the CMU CL system, which was
7 ;;;; written at Carnegie Mellon University and released into the
8 ;;;; public domain. The software is in the public domain and is
9 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
10 ;;;; files for more information.
14 ;;;; type format database
16 (eval-when (:compile-toplevel :load-toplevel :execute)
17 (def!struct (room-info (:make-load-form-fun just-dump-it-normally))
18 ;; the name of this type
19 (name nil :type symbol)
20 ;; kind of type (how we determine length)
22 :type (member :lowtag :fixed :header :vector
23 :string :code :closure :instance))
24 ;; length if fixed-length, shift amount for element size if :VECTOR
25 (length nil :type (or fixnum null))))
27 (eval-when (:compile-toplevel :execute)
29 (defvar *meta-room-info* (make-array 256 :initial-element nil))
31 (dolist (obj *primitive-objects*)
32 (let ((widetag (primitive-object-widetag obj))
33 (lowtag (primitive-object-lowtag obj))
34 (name (primitive-object-name obj))
35 (variable (primitive-object-variable-length-p obj))
36 (size (primitive-object-size obj)))
39 (;; KLUDGE described in dan_b message "Another one for the
40 ;; collection [bug 108]" (sbcl-devel 2004-01-22)
42 ;; In a freshly started SBCL 0.8.7.20ish, (TIME (ROOM T)) causes
43 ;; debugger invoked on a SB-INT:BUG in thread 5911:
44 ;; failed AVER: "(SAP= CURRENT END)"
45 ;; [WHN: Similar things happened on one but not the other of my
46 ;; machines when I just run ROOM a lot in a loop.]
48 ;; This appears to be due to my [DB] abuse of the primitive
49 ;; object macros to define a thread object that shares a lowtag
50 ;; with fixnums and has no widetag: it looks like the code that
51 ;; generates *META-ROOM-INFO* infers from this that even fixnums
52 ;; are thread-sized - probably undesirable.
54 ;; This [the fix; the EQL NAME 'THREAD clause here] is more in the
55 ;; nature of a workaround than a really good fix. I'm not sure
56 ;; what a really good fix is: I /think/ it's probably to remove
57 ;; the :LOWTAG option in DEFINE-PRIMITIVE-OBJECT THREAD, then teach
58 ;; genesis to generate the necessary OBJECT_SLOT_OFFSET macros
59 ;; for assembly source in the runtime/genesis/*.h files.
62 (let ((info (make-room-info :name name
64 (lowtag (symbol-value lowtag)))
65 (declare (fixnum lowtag))
67 (setf (svref *meta-room-info* (logior lowtag (ash i 3))) info))))
70 (setf (svref *meta-room-info* (symbol-value widetag))
71 (make-room-info :name name
75 (dolist (code (list complex-base-string-widetag simple-array-widetag
76 complex-bit-vector-widetag complex-vector-widetag
77 complex-array-widetag complex-vector-nil-widetag))
78 (setf (svref *meta-room-info* code)
79 (make-room-info :name 'array-header
82 (setf (svref *meta-room-info* bignum-widetag)
83 (make-room-info :name 'bignum
86 (setf (svref *meta-room-info* closure-header-widetag)
87 (make-room-info :name 'closure
90 (dolist (stuff '((simple-bit-vector-widetag . -3)
91 (simple-vector-widetag . 2)
92 (simple-array-unsigned-byte-2-widetag . -2)
93 (simple-array-unsigned-byte-4-widetag . -1)
94 (simple-array-unsigned-byte-7-widetag . 0)
95 (simple-array-unsigned-byte-8-widetag . 0)
96 (simple-array-unsigned-byte-15-widetag . 1)
97 (simple-array-unsigned-byte-16-widetag . 1)
98 (simple-array-unsigned-byte-31-widetag . 2)
99 (simple-array-unsigned-byte-32-widetag . 2)
100 (simple-array-signed-byte-8-widetag . 0)
101 (simple-array-signed-byte-16-widetag . 1)
102 (simple-array-unsigned-byte-29-widetag . 2)
103 (simple-array-signed-byte-30-widetag . 2)
104 (simple-array-signed-byte-32-widetag . 2)
105 (simple-array-single-float-widetag . 2)
106 (simple-array-double-float-widetag . 3)
107 (simple-array-complex-single-float-widetag . 3)
108 (simple-array-complex-double-float-widetag . 4)))
109 (let* ((name (car stuff))
111 (sname (string name)))
112 (setf (svref *meta-room-info* (symbol-value name))
113 (make-room-info :name (intern (subseq sname
115 (mismatch sname "-WIDETAG"
120 (setf (svref *meta-room-info* simple-base-string-widetag)
121 (make-room-info :name 'simple-base-string
125 (setf (svref *meta-room-info* simple-array-nil-widetag)
126 (make-room-info :name 'simple-array-nil
130 (setf (svref *meta-room-info* code-header-widetag)
131 (make-room-info :name 'code
134 (setf (svref *meta-room-info* instance-header-widetag)
135 (make-room-info :name 'instance
140 (defparameter *room-info* '#.*meta-room-info*)
141 (deftype spaces () '(member :static :dynamic :read-only))
143 ;;;; MAP-ALLOCATED-OBJECTS
145 ;;; Since they're represented as counts of words, we should never
146 ;;; need bignums to represent these:
147 (declaim (type fixnum
148 *static-space-free-pointer*
149 *read-only-space-free-pointer*))
151 (defun space-bounds (space)
152 (declare (type spaces space))
155 (values (int-sap static-space-start)
156 (int-sap (* *static-space-free-pointer* n-word-bytes))))
158 (values (int-sap read-only-space-start)
159 (int-sap (* *read-only-space-free-pointer* n-word-bytes))))
161 (values (int-sap #!+gencgc dynamic-space-start
162 #!-gencgc (current-dynamic-space-start))
163 (dynamic-space-free-pointer)))))
165 ;;; Return the total number of bytes used in SPACE.
166 (defun space-bytes (space)
167 (multiple-value-bind (start end) (space-bounds space)
168 (- (sap-int end) (sap-int start))))
170 ;;; Round SIZE (in bytes) up to the next dualword (eight byte) boundary.
171 #!-sb-fluid (declaim (inline round-to-dualword))
172 (defun round-to-dualword (size)
173 (declare (fixnum size))
174 (logand (the fixnum (+ size lowtag-mask)) (lognot lowtag-mask)))
176 ;;; Return the total size of a vector in bytes, including any pad.
177 #!-sb-fluid (declaim (inline vector-total-size))
178 (defun vector-total-size (obj info)
179 (let ((shift (room-info-length info))
180 (len (+ (length (the (simple-array * (*)) obj))
181 (ecase (room-info-kind info)
184 (declare (type (integer -3 3) shift))
186 (+ (* vector-data-offset n-word-bytes)
191 (1- (the fixnum (ash 1 (- shift)))))))
193 (ash len shift)))))))
195 ;;; Iterate over all the objects allocated in SPACE, calling FUN with
196 ;;; the object, the object's type code, and the object's total size in
197 ;;; bytes, including any header and padding.
198 #!-sb-fluid (declaim (maybe-inline map-allocated-objects))
199 (defun map-allocated-objects (fun space)
200 (declare (type function fun) (type spaces space))
202 (multiple-value-bind (start end) (space-bounds space)
203 (declare (type system-area-pointer start end))
204 (declare (optimize (speed 3) (safety 0)))
205 (let ((current start)
209 (let* ((header (sap-ref-32 current 0))
210 (header-widetag (logand header #xFF))
211 (info (svref *room-info* header-widetag)))
214 (eq (room-info-kind info) :lowtag))
215 (let ((size (* cons-size n-word-bytes)))
217 (make-lisp-obj (logior (sap-int current)
218 list-pointer-lowtag))
221 (setq current (sap+ current size))))
222 ((eql header-widetag closure-header-widetag)
223 (let* ((obj (make-lisp-obj (logior (sap-int current)
224 fun-pointer-lowtag)))
225 (size (round-to-dualword
226 (* (the fixnum (1+ (get-closure-length obj)))
228 (funcall fun obj header-widetag size)
229 (setq current (sap+ current size))))
230 ((eq (room-info-kind info) :instance)
231 (let* ((obj (make-lisp-obj
232 (logior (sap-int current) instance-pointer-lowtag)))
233 (size (round-to-dualword
234 (* (+ (%instance-length obj) 1) n-word-bytes))))
235 (declare (fixnum size))
236 (funcall fun obj header-widetag size)
237 (aver (zerop (logand size lowtag-mask)))
239 (when (> size 200000) (break "implausible size, prev ~S" prev))
242 (setq current (sap+ current size))))
244 (let* ((obj (make-lisp-obj
245 (logior (sap-int current) other-pointer-lowtag)))
246 (size (ecase (room-info-kind info)
248 (aver (or (eql (room-info-length info)
249 (1+ (get-header-data obj)))
251 (simple-array-nil-p obj)))
253 (* (room-info-length info) n-word-bytes)))
255 (vector-total-size obj info))
258 (* (1+ (get-header-data obj)) n-word-bytes)))
261 (* (get-header-data obj) n-word-bytes))
263 (* (the fixnum (%code-code-size obj))
265 (declare (fixnum size))
266 (funcall fun obj header-widetag size)
267 (aver (zerop (logand size lowtag-mask)))
269 (when (> size 200000)
270 (break "Implausible size, prev ~S" prev))
273 (setq current (sap+ current size))))))
274 (unless (sap< current end)
275 (aver (sap= current end))
283 ;;; Return a list of 3-lists (bytes object type-name) for the objects
284 ;;; allocated in Space.
285 (defun type-breakdown (space)
286 (let ((sizes (make-array 256 :initial-element 0 :element-type 'fixnum))
287 (counts (make-array 256 :initial-element 0 :element-type 'fixnum)))
288 (map-allocated-objects
289 (lambda (obj type size)
290 (declare (fixnum size) (optimize (speed 3) (safety 0)) (ignore obj))
291 (incf (aref sizes type) size)
292 (incf (aref counts type)))
295 (let ((totals (make-hash-table :test 'eq)))
297 (let ((total-count (aref counts i)))
298 (unless (zerop total-count)
299 (let* ((total-size (aref sizes i))
300 (name (room-info-name (aref *room-info* i)))
301 (found (gethash name totals)))
303 (incf (first found) total-size)
304 (incf (second found) total-count))
306 (setf (gethash name totals)
307 (list total-size total-count name))))))))
309 (collect ((totals-list))
310 (maphash (lambda (k v)
314 (sort (totals-list) #'> :key #'first)))))
316 ;;; Handle the summary printing for MEMORY-USAGE. Totals is a list of lists
317 ;;; (space-name . totals-for-space), where totals-for-space is the list
318 ;;; returned by TYPE-BREAKDOWN.
319 (defun print-summary (spaces totals)
320 (let ((summary (make-hash-table :test 'eq)))
321 (dolist (space-total totals)
322 (dolist (total (cdr space-total))
323 (push (cons (car space-total) total)
324 (gethash (third total) summary))))
326 (collect ((summary-totals))
327 (maphash (lambda (k v)
330 (declare (fixnum sum))
331 (dolist (space-total v)
332 (incf sum (first (cdr space-total))))
333 (summary-totals (cons sum v))))
336 (format t "~2&Summary of spaces: ~(~{~A ~}~)~%" spaces)
337 (let ((summary-total-bytes 0)
338 (summary-total-objects 0))
339 (declare (fixnum summary-total-bytes summary-total-objects))
340 (dolist (space-totals
341 (mapcar #'cdr (sort (summary-totals) #'> :key #'car)))
342 (let ((total-objects 0)
345 (declare (fixnum total-objects total-bytes))
347 (dolist (space-total space-totals)
348 (let ((total (cdr space-total)))
349 (setq name (third total))
350 (incf total-bytes (first total))
351 (incf total-objects (second total))
352 (spaces (cons (car space-total) (first total)))))
353 (format t "~%~A:~% ~:D bytes, ~:D object~:P"
354 name total-bytes total-objects)
355 (dolist (space (spaces))
356 (format t ", ~W% ~(~A~)"
357 (round (* (cdr space) 100) total-bytes)
360 (incf summary-total-bytes total-bytes)
361 (incf summary-total-objects total-objects))))
362 (format t "~%Summary total:~% ~:D bytes, ~:D objects.~%"
363 summary-total-bytes summary-total-objects)))))
365 ;;; Report object usage for a single space.
366 (defun report-space-total (space-total cutoff)
367 (declare (list space-total) (type (or single-float null) cutoff))
368 (format t "~2&Breakdown for ~(~A~) space:~%" (car space-total))
369 (let* ((types (cdr space-total))
370 (total-bytes (reduce #'+ (mapcar #'first types)))
371 (total-objects (reduce #'+ (mapcar #'second types)))
372 (cutoff-point (if cutoff
373 (truncate (* (float total-bytes) cutoff))
376 (reported-objects 0))
377 (declare (fixnum total-objects total-bytes cutoff-point reported-objects
379 (loop for (bytes objects name) in types do
380 (when (<= bytes cutoff-point)
381 (format t " ~10:D bytes for ~9:D other object~2:*~P.~%"
382 (- total-bytes reported-bytes)
383 (- total-objects reported-objects))
385 (incf reported-bytes bytes)
386 (incf reported-objects objects)
387 (format t " ~10:D bytes for ~9:D ~(~A~) object~2:*~P.~%"
389 (format t " ~10:D bytes for ~9:D ~(~A~) object~2:*~P (space total.)~%"
390 total-bytes total-objects (car space-total))))
392 ;;; Print information about the heap memory in use. PRINT-SPACES is a
393 ;;; list of the spaces to print detailed information for.
394 ;;; COUNT-SPACES is a list of the spaces to scan. For either one, T
395 ;;; means all spaces (i.e. :STATIC, :DYNAMIC and :READ-ONLY.) If
396 ;;; PRINT-SUMMARY is true, then summary information will be printed.
397 ;;; The defaults print only summary information for dynamic space. If
398 ;;; true, CUTOFF is a fraction of the usage in a report below which
399 ;;; types will be combined as OTHER.
400 (defun memory-usage (&key print-spaces (count-spaces '(:dynamic))
401 (print-summary t) cutoff)
402 (declare (type (or single-float null) cutoff))
403 (let* ((spaces (if (eq count-spaces t)
404 '(:static :dynamic :read-only)
406 (totals (mapcar (lambda (space)
407 (cons space (type-breakdown space)))
410 (dolist (space-total totals)
411 (when (or (eq print-spaces t)
412 (member (car space-total) print-spaces))
413 (report-space-total space-total cutoff)))
415 (when print-summary (print-summary spaces totals)))
419 ;;; Print info about how much code and no-ops there are in SPACE.
420 (defun count-no-ops (space)
421 (declare (type spaces space))
425 (declare (fixnum code-words no-ops)
426 (type unsigned-byte total-bytes))
427 (map-allocated-objects
428 (lambda (obj type size)
429 (declare (fixnum size) (optimize (safety 0)))
430 (when (eql type code-header-widetag)
431 (incf total-bytes size)
432 (let ((words (truly-the fixnum (%code-code-size obj)))
433 (sap (truly-the system-area-pointer
434 (%primitive code-instructions obj))))
435 (incf code-words words)
437 (when (zerop (sap-ref-32 sap (* i n-word-bytes)))
442 "~:D code-object bytes, ~:D code words, with ~:D no-ops (~D%).~%"
443 total-bytes code-words no-ops
444 (round (* no-ops 100) code-words)))
448 (defun descriptor-vs-non-descriptor-storage (&rest spaces)
449 (let ((descriptor-words 0)
450 (non-descriptor-headers 0)
451 (non-descriptor-bytes 0))
452 (declare (type unsigned-byte descriptor-words non-descriptor-headers
453 non-descriptor-bytes))
454 (dolist (space (or spaces '(:read-only :static :dynamic)))
455 (declare (inline map-allocated-objects))
456 (map-allocated-objects
457 (lambda (obj type size)
458 (declare (fixnum size) (optimize (safety 0)))
460 (#.code-header-widetag
461 (let ((inst-words (truly-the fixnum (%code-code-size obj))))
462 (declare (type fixnum inst-words))
463 (incf non-descriptor-bytes (* inst-words n-word-bytes))
464 (incf descriptor-words
465 (- (truncate size n-word-bytes) inst-words))))
467 #.single-float-widetag
468 #.double-float-widetag
469 #.simple-base-string-widetag
470 #.simple-array-nil-widetag
471 #.simple-bit-vector-widetag
472 #.simple-array-unsigned-byte-2-widetag
473 #.simple-array-unsigned-byte-4-widetag
474 #.simple-array-unsigned-byte-8-widetag
475 #.simple-array-unsigned-byte-16-widetag
476 #.simple-array-unsigned-byte-32-widetag
477 #.simple-array-signed-byte-8-widetag
478 #.simple-array-signed-byte-16-widetag
479 #.simple-array-signed-byte-30-widetag
480 #.simple-array-signed-byte-32-widetag
481 #.simple-array-single-float-widetag
482 #.simple-array-double-float-widetag
483 #.simple-array-complex-single-float-widetag
484 #.simple-array-complex-double-float-widetag)
485 (incf non-descriptor-headers)
486 (incf non-descriptor-bytes (- size n-word-bytes)))
487 ((#.list-pointer-lowtag
488 #.instance-pointer-lowtag
491 #.simple-array-widetag
492 #.simple-vector-widetag
493 #.complex-base-string-widetag
494 #.complex-vector-nil-widetag
495 #.complex-bit-vector-widetag
496 #.complex-vector-widetag
497 #.complex-array-widetag
498 #.closure-header-widetag
499 #.funcallable-instance-header-widetag
500 #.value-cell-header-widetag
501 #.symbol-header-widetag
503 #.weak-pointer-widetag
504 #.instance-header-widetag)
505 (incf descriptor-words (truncate size n-word-bytes)))
507 (error "bogus widetag: ~W" type))))
509 (format t "~:D words allocated for descriptor objects.~%"
511 (format t "~:D bytes data/~:D words header for non-descriptor objects.~%"
512 non-descriptor-bytes non-descriptor-headers)
515 ;;; Print a breakdown by instance type of all the instances allocated
516 ;;; in SPACE. If TOP-N is true, print only information for the the
517 ;;; TOP-N types with largest usage.
518 (defun instance-usage (space &key (top-n 15))
519 (declare (type spaces space) (type (or fixnum null) top-n))
520 (format t "~2&~@[Top ~W ~]~(~A~) instance types:~%" top-n space)
521 (let ((totals (make-hash-table :test 'eq))
524 (declare (fixnum total-objects total-bytes))
525 (map-allocated-objects
526 (lambda (obj type size)
527 (declare (fixnum size) (optimize (speed 3) (safety 0)))
528 (when (eql type instance-header-widetag)
530 (incf total-bytes size)
531 (let* ((classoid (layout-classoid (%instance-ref obj 0)))
532 (found (gethash classoid totals)))
534 (incf (the fixnum (car found)))
535 (incf (the fixnum (cdr found)) size))
537 (setf (gethash classoid totals) (cons 1 size)))))))
540 (collect ((totals-list))
541 (maphash (lambda (classoid what)
542 (totals-list (cons (prin1-to-string
543 (classoid-proper-name classoid))
546 (let ((sorted (sort (totals-list) #'> :key #'cddr))
549 (declare (fixnum printed-bytes printed-objects))
550 (dolist (what (if top-n
551 (subseq sorted 0 (min (length sorted) top-n))
553 (let ((bytes (cddr what))
554 (objects (cadr what)))
555 (incf printed-bytes bytes)
556 (incf printed-objects objects)
557 (format t " ~A: ~:D bytes, ~:D object~:P.~%" (car what)
560 (let ((residual-objects (- total-objects printed-objects))
561 (residual-bytes (- total-bytes printed-bytes)))
562 (unless (zerop residual-objects)
563 (format t " Other types: ~:D bytes, ~:D object~:P.~%"
564 residual-bytes residual-objects))))
566 (format t " ~:(~A~) instance total: ~:D bytes, ~:D object~:P.~%"
567 space total-bytes total-objects)))
571 ;;;; PRINT-ALLOCATED-OBJECTS
573 (defun print-allocated-objects (space &key (percent 0) (pages 5)
574 type larger smaller count
575 (stream *standard-output*))
576 (declare (type (integer 0 99) percent) (type index pages)
577 (type stream stream) (type spaces space)
578 (type (or index null) type larger smaller count))
579 (multiple-value-bind (start-sap end-sap) (space-bounds space)
580 (let* ((space-start (sap-int start-sap))
581 (space-end (sap-int end-sap))
582 (space-size (- space-end space-start))
583 (pagesize (sb!sys:get-page-size))
584 (start (+ space-start (round (* space-size percent) 100)))
585 (printed-conses (make-hash-table :test 'eq))
589 (declare (type (unsigned-byte 32) last-page start)
590 (fixnum pages-so-far count-so-far pagesize))
591 (labels ((note-conses (x)
592 (unless (or (atom x) (gethash x printed-conses))
593 (setf (gethash x printed-conses) t)
594 (note-conses (car x))
595 (note-conses (cdr x)))))
596 (map-allocated-objects
597 (lambda (obj obj-type size)
598 (declare (optimize (safety 0)))
599 (let ((addr (get-lisp-obj-address obj)))
600 (when (>= addr start)
602 (> count-so-far count)
603 (> pages-so-far pages))
604 (return-from print-allocated-objects (values)))
607 (let ((this-page (* (the (values (unsigned-byte 32) t)
608 (truncate addr pagesize))
610 (declare (type (unsigned-byte 32) this-page))
611 (when (/= this-page last-page)
612 (when (< pages-so-far pages)
613 ;; FIXME: What is this? (ERROR "Argh..")? or
614 ;; a warning? or code that can be removed
615 ;; once the system is stable? or what?
616 (format stream "~2&**** Page ~W, address ~X:~%"
618 (setq last-page this-page)
619 (incf pages-so-far))))
621 (when (and (or (not type) (eql obj-type type))
622 (or (not smaller) (<= size smaller))
623 (or (not larger) (>= size larger)))
626 (#.code-header-widetag
627 (let ((dinfo (%code-debug-info obj)))
628 (format stream "~&Code object: ~S~%"
630 (sb!c::compiled-debug-info-name dinfo)
632 (#.symbol-header-widetag
633 (format stream "~&~S~%" obj))
634 (#.list-pointer-lowtag
635 (unless (gethash obj printed-conses)
637 (let ((*print-circle* t)
640 (format stream "~&~S~%" obj))))
643 (let ((str (write-to-string obj :level 5 :length 10
645 (unless (eql type instance-header-widetag)
646 (format stream "~S: " (type-of obj)))
647 (format stream "~A~%"
648 (subseq str 0 (min (length str) 60))))))))))
652 ;;;; LIST-ALLOCATED-OBJECTS, LIST-REFERENCING-OBJECTS
654 (defvar *ignore-after* nil)
656 (defun valid-obj (space x)
657 (or (not (eq space :dynamic))
658 ;; this test looks bogus if the allocator doesn't work linearly,
659 ;; which I suspect is the case for GENCGC. -- CSR, 2004-06-29
660 (< (get-lisp-obj-address x) (get-lisp-obj-address *ignore-after*))))
662 (defun maybe-cons (space x stuff)
663 (if (valid-obj space x)
667 (defun list-allocated-objects (space &key type larger smaller count
669 (declare (type spaces space)
670 (type (or index null) larger smaller type count)
671 (type (or function null) test)
672 (inline map-allocated-objects))
673 (unless *ignore-after*
674 (setq *ignore-after* (cons 1 2)))
675 (collect ((counted 0 1+))
677 (map-allocated-objects
678 (lambda (obj obj-type size)
679 (declare (optimize (safety 0)))
680 (when (and (or (not type) (eql obj-type type))
681 (or (not smaller) (<= size smaller))
682 (or (not larger) (>= size larger))
683 (or (not test) (funcall test obj)))
684 (setq res (maybe-cons space obj res))
685 (when (and count (>= (counted) count))
686 (return-from list-allocated-objects res))))
690 (defun map-referencing-objects (fun space object)
691 (declare (type spaces space) (inline map-allocated-objects))
692 (unless *ignore-after*
693 (setq *ignore-after* (cons 1 2)))
694 (flet ((maybe-call (fun obj)
695 (when (valid-obj space obj)
697 (map-allocated-objects
698 (lambda (obj obj-type size)
699 (declare (optimize (safety 0)) (ignore obj-type size))
702 (when (or (eq (car obj) object)
703 (eq (cdr obj) object))
704 (maybe-call fun obj)))
706 (dotimes (i (%instance-length obj))
707 (when (eq (%instance-ref obj i) object)
711 (let ((length (get-header-data obj)))
712 (do ((i code-constants-offset (1+ i)))
714 (when (eq (code-header-ref obj i) object)
718 (dotimes (i (length obj))
719 (when (eq (svref obj i) object)
723 (when (or (eq (symbol-name obj) object)
724 (eq (symbol-package obj) object)
725 (eq (symbol-plist obj) object)
726 (eq (symbol-value obj) object))
727 (maybe-call fun obj)))))
730 (defun list-referencing-objects (space object)
732 (map-referencing-objects
733 (lambda (obj) (res obj)) space object)