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 #!+sb-unicode complex-character-string-widetag
76 complex-base-string-widetag simple-array-widetag
77 complex-bit-vector-widetag complex-vector-widetag
78 complex-array-widetag complex-vector-nil-widetag))
79 (setf (svref *meta-room-info* code)
80 (make-room-info :name 'array-header
83 (setf (svref *meta-room-info* bignum-widetag)
84 (make-room-info :name 'bignum
87 (setf (svref *meta-room-info* closure-header-widetag)
88 (make-room-info :name 'closure
91 ;; FIXME: This looks rather brittle. Can we get more of these numbers
92 ;; from somewhere sensible?
93 (dolist (stuff '((simple-bit-vector-widetag . -3)
94 (simple-vector-widetag . #.sb!vm:word-shift)
95 (simple-array-unsigned-byte-2-widetag . -2)
96 (simple-array-unsigned-byte-4-widetag . -1)
97 (simple-array-unsigned-byte-7-widetag . 0)
98 (simple-array-unsigned-byte-8-widetag . 0)
99 (simple-array-unsigned-byte-15-widetag . 1)
100 (simple-array-unsigned-byte-16-widetag . 1)
101 (simple-array-unsigned-byte-31-widetag . 2)
102 (simple-array-unsigned-byte-32-widetag . 2)
103 (simple-array-unsigned-byte-60-widetag . 3)
104 (simple-array-unsigned-byte-63-widetag . 3)
105 (simple-array-unsigned-byte-64-widetag . 3)
106 (simple-array-signed-byte-8-widetag . 0)
107 (simple-array-signed-byte-16-widetag . 1)
108 (simple-array-unsigned-byte-29-widetag . 2)
109 (simple-array-signed-byte-30-widetag . 2)
110 (simple-array-signed-byte-32-widetag . 2)
111 (simple-array-signed-byte-61-widetag . 3)
112 (simple-array-signed-byte-64-widetag . 3)
113 (simple-array-single-float-widetag . 2)
114 (simple-array-double-float-widetag . 3)
115 (simple-array-complex-single-float-widetag . 3)
116 (simple-array-complex-double-float-widetag . 4)))
117 (let* ((name (car stuff))
119 (sname (string name)))
121 (setf (svref *meta-room-info* (symbol-value name))
122 (make-room-info :name (intern (subseq sname
124 (mismatch sname "-WIDETAG"
129 (setf (svref *meta-room-info* simple-base-string-widetag)
130 (make-room-info :name 'simple-base-string
135 (setf (svref *meta-room-info* simple-character-string-widetag)
136 (make-room-info :name 'simple-character-string
140 (setf (svref *meta-room-info* simple-array-nil-widetag)
141 (make-room-info :name 'simple-array-nil
145 (setf (svref *meta-room-info* code-header-widetag)
146 (make-room-info :name 'code
149 (setf (svref *meta-room-info* instance-header-widetag)
150 (make-room-info :name 'instance
155 (defparameter *room-info* '#.*meta-room-info*)
156 (deftype spaces () '(member :static :dynamic :read-only))
158 ;;;; MAP-ALLOCATED-OBJECTS
160 ;;; Since they're represented as counts of words, we should never
161 ;;; need bignums to represent these:
162 (declaim (type fixnum
163 *static-space-free-pointer*
164 *read-only-space-free-pointer*))
166 (defun space-bounds (space)
167 (declare (type spaces space))
170 (values (int-sap static-space-start)
171 (int-sap (* *static-space-free-pointer* n-word-bytes))))
173 (values (int-sap read-only-space-start)
174 (int-sap (* *read-only-space-free-pointer* n-word-bytes))))
176 (values (int-sap (current-dynamic-space-start))
177 (dynamic-space-free-pointer)))))
179 ;;; Return the total number of bytes used in SPACE.
180 (defun space-bytes (space)
181 (multiple-value-bind (start end) (space-bounds space)
182 (- (sap-int end) (sap-int start))))
184 ;;; Round SIZE (in bytes) up to the next dualword boundary. A dualword
185 ;;; is eight bytes on platforms with 32-bit word size and 16 bytes on
186 ;;; platforms with 64-bit word size.
187 #!-sb-fluid (declaim (inline round-to-dualword))
188 (defun round-to-dualword (size)
189 (logand (the word (+ size lowtag-mask)) (lognot lowtag-mask)))
191 ;;; Return the total size of a vector in bytes, including any pad.
192 #!-sb-fluid (declaim (inline vector-total-size))
193 (defun vector-total-size (obj info)
194 (let ((shift (room-info-length info))
195 (len (+ (length (the (simple-array * (*)) obj))
196 (ecase (room-info-kind info)
200 (+ (* vector-data-offset n-word-bytes)
202 (ash (+ len (1- (ash 1 (- shift))))
206 ;;; Access to the GENCGC page table for better precision in
207 ;;; MAP-ALLOCATED-OBJECTS
210 (define-alien-type (struct page)
213 ;; On platforms with small enough GC pages, this field
214 ;; will be a short. On platforms with larger ones, it'll
216 (bytes-used (unsigned
217 #.(if (typep sb!vm:gencgc-page-size
223 (declaim (inline find-page-index))
224 (define-alien-routine "find_page_index" long (index long))
225 (define-alien-variable "page_table" (* (struct page))))
227 ;;; Iterate over all the objects allocated in SPACE, calling FUN with
228 ;;; the object, the object's type code, and the object's total size in
229 ;;; bytes, including any header and padding.
230 #!-sb-fluid (declaim (maybe-inline map-allocated-objects))
231 (defun map-allocated-objects (fun space)
232 (declare (type function fun) (type spaces space))
234 (multiple-value-bind (start end) (space-bounds space)
235 (declare (type system-area-pointer start end))
236 (declare (optimize (speed 3)))
237 (let ((current start)
238 #!+gencgc (skip-tests-until-addr 0))
239 (labels ((maybe-finish-mapping ()
240 (unless (sap< current end)
241 (aver (sap= current end))
242 (return-from map-allocated-objects)))
243 ;; GENCGC doesn't allocate linearly, which means that the
244 ;; dynamic space can contain large blocks zeros that get
245 ;; accounted as conses in ROOM (and slow down other
246 ;; applications of MAP-ALLOCATED-OBJECTS). To fix this
247 ;; check the GC page structure for the current address.
248 ;; If the page is free or the address is beyond the page-
249 ;; internal allocation offset (bytes-used) skip to the
250 ;; next page immediately.
253 (when (eq space :dynamic)
254 (loop with page-mask = #.(1- sb!vm:gencgc-page-size)
255 for addr of-type sb!vm:word = (sap-int current)
256 while (>= addr skip-tests-until-addr)
258 ;; For some reason binding PAGE with LET
259 ;; conses like mad (but gives no compiler notes...)
260 ;; Work around the problem with SYMBOL-MACROLET
261 ;; instead of trying to figure out the real
262 ;; issue. -- JES, 2005-05-17
264 ((page (deref page-table
265 (find-page-index addr))))
266 ;; Don't we have any nicer way to access C struct
268 (let ((alloc-flag (ldb (byte 3 2)
270 (bytes-used (slot page 'bytes-used)))
271 ;; If the page is not free and the current
272 ;; pointer is still below the allocation offset
274 (when (and (not (zerop alloc-flag))
275 (<= (logand page-mask addr)
277 ;; Don't bother testing again until we
278 ;; get past that allocation offset
279 (setf skip-tests-until-addr
280 (+ (logandc2 addr page-mask) bytes-used))
281 ;; And then continue with the scheduled
283 (return-from maybe-skip-page))
284 ;; Move CURRENT to start of next page
285 (setf current (int-sap (+ (logandc2 addr page-mask)
286 sb!vm:gencgc-page-size)))
287 (maybe-finish-mapping)))))))
288 (declare (inline maybe-finish-mapping maybe-skip-page))
290 (maybe-finish-mapping)
292 (let* ((header (sap-ref-word current 0))
293 (header-widetag (logand header #xFF))
294 (info (svref *room-info* header-widetag)))
297 (eq (room-info-kind info) :lowtag))
298 (let ((size (* cons-size n-word-bytes)))
300 (%make-lisp-obj (logior (sap-int current)
301 list-pointer-lowtag))
304 (setq current (sap+ current size))))
305 ((eql header-widetag closure-header-widetag)
306 (let* ((obj (%make-lisp-obj (logior (sap-int current)
307 fun-pointer-lowtag)))
308 (size (round-to-dualword
309 (* (the fixnum (1+ (get-closure-length obj)))
311 (funcall fun obj header-widetag size)
312 (setq current (sap+ current size))))
313 ((eq (room-info-kind info) :instance)
314 (let* ((obj (%make-lisp-obj
315 (logior (sap-int current) instance-pointer-lowtag)))
316 (size (round-to-dualword
317 (* (+ (%instance-length obj) 1) n-word-bytes))))
318 (declare (fixnum size))
319 (funcall fun obj header-widetag size)
320 (aver (zerop (logand size lowtag-mask)))
321 (setq current (sap+ current size))))
323 (let* ((obj (%make-lisp-obj
324 (logior (sap-int current) other-pointer-lowtag)))
325 (size (ecase (room-info-kind info)
327 (aver (or (eql (room-info-length info)
328 (1+ (get-header-data obj)))
330 (simple-array-nil-p obj)))
332 (* (room-info-length info) n-word-bytes)))
334 (vector-total-size obj info))
337 (* (1+ (get-header-data obj)) n-word-bytes)))
340 (* (get-header-data obj) n-word-bytes))
342 (* (the fixnum (%code-code-size obj))
344 (funcall fun obj header-widetag size)
347 (aver (zerop (logand size lowtag-mask)))
348 (setq current (sap+ current size)))))
351 (word (frob))))))))))))))
356 ;;; Return a list of 3-lists (bytes object type-name) for the objects
357 ;;; allocated in Space.
358 (defun type-breakdown (space)
359 (let ((sizes (make-array 256 :initial-element 0 :element-type '(unsigned-byte #.sb!vm:n-word-bits)))
360 (counts (make-array 256 :initial-element 0 :element-type '(unsigned-byte #.sb!vm:n-word-bits))))
361 (map-allocated-objects
362 (lambda (obj type size)
363 (declare (word size) (optimize (speed 3)) (ignore obj))
364 (incf (aref sizes type) size)
365 (incf (aref counts type)))
368 (let ((totals (make-hash-table :test 'eq)))
370 (let ((total-count (aref counts i)))
371 (unless (zerop total-count)
372 (let* ((total-size (aref sizes i))
373 (name (room-info-name (aref *room-info* i)))
374 (found (gethash name totals)))
376 (incf (first found) total-size)
377 (incf (second found) total-count))
379 (setf (gethash name totals)
380 (list total-size total-count name))))))))
382 (collect ((totals-list))
383 (maphash (lambda (k v)
387 (sort (totals-list) #'> :key #'first)))))
389 ;;; Handle the summary printing for MEMORY-USAGE. Totals is a list of lists
390 ;;; (space-name . totals-for-space), where totals-for-space is the list
391 ;;; returned by TYPE-BREAKDOWN.
392 (defun print-summary (spaces totals)
393 (let ((summary (make-hash-table :test 'eq)))
394 (dolist (space-total totals)
395 (dolist (total (cdr space-total))
396 (push (cons (car space-total) total)
397 (gethash (third total) summary))))
399 (collect ((summary-totals))
400 (maphash (lambda (k v)
403 (declare (unsigned-byte sum))
404 (dolist (space-total v)
405 (incf sum (first (cdr space-total))))
406 (summary-totals (cons sum v))))
409 (format t "~2&Summary of spaces: ~(~{~A ~}~)~%" spaces)
410 (let ((summary-total-bytes 0)
411 (summary-total-objects 0))
412 (declare (unsigned-byte summary-total-bytes summary-total-objects))
413 (dolist (space-totals
414 (mapcar #'cdr (sort (summary-totals) #'> :key #'car)))
415 (let ((total-objects 0)
418 (declare (unsigned-byte total-objects total-bytes))
420 (dolist (space-total space-totals)
421 (let ((total (cdr space-total)))
422 (setq name (third total))
423 (incf total-bytes (first total))
424 (incf total-objects (second total))
425 (spaces (cons (car space-total) (first total)))))
426 (format t "~%~A:~% ~:D bytes, ~:D object~:P"
427 name total-bytes total-objects)
428 (dolist (space (spaces))
429 (format t ", ~W% ~(~A~)"
430 (round (* (cdr space) 100) total-bytes)
433 (incf summary-total-bytes total-bytes)
434 (incf summary-total-objects total-objects))))
435 (format t "~%Summary total:~% ~:D bytes, ~:D objects.~%"
436 summary-total-bytes summary-total-objects)))))
438 ;;; Report object usage for a single space.
439 (defun report-space-total (space-total cutoff)
440 (declare (list space-total) (type (or single-float null) cutoff))
441 (format t "~2&Breakdown for ~(~A~) space:~%" (car space-total))
442 (let* ((types (cdr space-total))
443 (total-bytes (reduce #'+ (mapcar #'first types)))
444 (total-objects (reduce #'+ (mapcar #'second types)))
445 (cutoff-point (if cutoff
446 (truncate (* (float total-bytes) cutoff))
449 (reported-objects 0))
450 (declare (unsigned-byte total-objects total-bytes cutoff-point reported-objects
452 (loop for (bytes objects name) in types do
453 (when (<= bytes cutoff-point)
454 (format t " ~10:D bytes for ~9:D other object~2:*~P.~%"
455 (- total-bytes reported-bytes)
456 (- total-objects reported-objects))
458 (incf reported-bytes bytes)
459 (incf reported-objects objects)
460 (format t " ~10:D bytes for ~9:D ~(~A~) object~2:*~P.~%"
462 (format t " ~10:D bytes for ~9:D ~(~A~) object~2:*~P (space total.)~%"
463 total-bytes total-objects (car space-total))))
465 ;;; Print information about the heap memory in use. PRINT-SPACES is a
466 ;;; list of the spaces to print detailed information for.
467 ;;; COUNT-SPACES is a list of the spaces to scan. For either one, T
468 ;;; means all spaces (i.e. :STATIC, :DYNAMIC and :READ-ONLY.) If
469 ;;; PRINT-SUMMARY is true, then summary information will be printed.
470 ;;; The defaults print only summary information for dynamic space. If
471 ;;; true, CUTOFF is a fraction of the usage in a report below which
472 ;;; types will be combined as OTHER.
473 (defun memory-usage (&key print-spaces (count-spaces '(:dynamic))
474 (print-summary t) cutoff)
475 (declare (type (or single-float null) cutoff))
476 (let* ((spaces (if (eq count-spaces t)
477 '(:static :dynamic :read-only)
479 (totals (mapcar (lambda (space)
480 (cons space (type-breakdown space)))
483 (dolist (space-total totals)
484 (when (or (eq print-spaces t)
485 (member (car space-total) print-spaces))
486 (report-space-total space-total cutoff)))
488 (when print-summary (print-summary spaces totals)))
492 ;;; Print info about how much code and no-ops there are in SPACE.
493 (defun count-no-ops (space)
494 (declare (type spaces space))
498 (declare (fixnum code-words no-ops)
499 (type unsigned-byte total-bytes))
500 (map-allocated-objects
501 (lambda (obj type size)
502 (when (eql type code-header-widetag)
503 (let ((words (truly-the fixnum (%code-code-size obj)))
504 (sap (truly-the system-area-pointer
505 (%primitive code-instructions obj)))
507 (declare (fixnum size))
508 (incf total-bytes size)
509 (incf code-words words)
511 (when (zerop (sap-ref-word sap (* i n-word-bytes)))
516 "~:D code-object bytes, ~:D code words, with ~:D no-ops (~D%).~%"
517 total-bytes code-words no-ops
518 (round (* no-ops 100) code-words)))
522 (defun descriptor-vs-non-descriptor-storage (&rest spaces)
523 (let ((descriptor-words 0)
524 (non-descriptor-headers 0)
525 (non-descriptor-bytes 0))
526 (declare (type unsigned-byte descriptor-words non-descriptor-headers
527 non-descriptor-bytes))
528 (dolist (space (or spaces '(:read-only :static :dynamic)))
529 (declare (inline map-allocated-objects))
530 (map-allocated-objects
531 (lambda (obj type size)
533 (#.code-header-widetag
534 (let ((inst-words (truly-the fixnum (%code-code-size obj)))
536 (declare (type fixnum size inst-words))
537 (incf non-descriptor-bytes (* inst-words n-word-bytes))
538 (incf descriptor-words
539 (- (truncate size n-word-bytes) inst-words))))
541 #.single-float-widetag
542 #.double-float-widetag
543 #.simple-base-string-widetag
544 #!+sb-unicode #.simple-character-string-widetag
545 #.simple-array-nil-widetag
546 #.simple-bit-vector-widetag
547 #.simple-array-unsigned-byte-2-widetag
548 #.simple-array-unsigned-byte-4-widetag
549 #.simple-array-unsigned-byte-8-widetag
550 #.simple-array-unsigned-byte-16-widetag
551 #.simple-array-unsigned-byte-32-widetag
552 #.simple-array-signed-byte-8-widetag
553 #.simple-array-signed-byte-16-widetag
554 ;; #.simple-array-signed-byte-30-widetag
555 #.simple-array-signed-byte-32-widetag
556 #.simple-array-single-float-widetag
557 #.simple-array-double-float-widetag
558 #.simple-array-complex-single-float-widetag
559 #.simple-array-complex-double-float-widetag)
560 (incf non-descriptor-headers)
561 (incf non-descriptor-bytes (- size n-word-bytes)))
562 ((#.list-pointer-lowtag
563 #.instance-pointer-lowtag
566 #.simple-array-widetag
567 #.simple-vector-widetag
568 #.complex-base-string-widetag
569 #.complex-vector-nil-widetag
570 #.complex-bit-vector-widetag
571 #.complex-vector-widetag
572 #.complex-array-widetag
573 #.closure-header-widetag
574 #.funcallable-instance-header-widetag
575 #.value-cell-header-widetag
576 #.symbol-header-widetag
578 #.weak-pointer-widetag
579 #.instance-header-widetag)
580 (incf descriptor-words (truncate (the fixnum size) n-word-bytes)))
582 (error "bogus widetag: ~W" type))))
584 (format t "~:D words allocated for descriptor objects.~%"
586 (format t "~:D bytes data/~:D words header for non-descriptor objects.~%"
587 non-descriptor-bytes non-descriptor-headers)
590 ;;; Print a breakdown by instance type of all the instances allocated
591 ;;; in SPACE. If TOP-N is true, print only information for the
592 ;;; TOP-N types with largest usage.
593 (defun instance-usage (space &key (top-n 15))
594 (declare (type spaces space) (type (or fixnum null) top-n))
595 (format t "~2&~@[Top ~W ~]~(~A~) instance types:~%" top-n space)
596 (let ((totals (make-hash-table :test 'eq))
599 (declare (unsigned-byte total-objects total-bytes))
600 (map-allocated-objects
601 (lambda (obj type size)
602 (declare (optimize (speed 3)))
603 (when (eql type instance-header-widetag)
605 (let* ((classoid (layout-classoid (%instance-ref obj 0)))
606 (found (gethash classoid totals))
608 (declare (fixnum size))
609 (incf total-bytes size)
611 (incf (the fixnum (car found)))
612 (incf (the fixnum (cdr found)) size))
614 (setf (gethash classoid totals) (cons 1 size)))))))
617 (collect ((totals-list))
618 (maphash (lambda (classoid what)
619 (totals-list (cons (prin1-to-string
620 (classoid-proper-name classoid))
623 (let ((sorted (sort (totals-list) #'> :key #'cddr))
626 (declare (unsigned-byte printed-bytes printed-objects))
627 (dolist (what (if top-n
628 (subseq sorted 0 (min (length sorted) top-n))
630 (let ((bytes (cddr what))
631 (objects (cadr what)))
632 (incf printed-bytes bytes)
633 (incf printed-objects objects)
634 (format t " ~A: ~:D bytes, ~:D object~:P.~%" (car what)
637 (let ((residual-objects (- total-objects printed-objects))
638 (residual-bytes (- total-bytes printed-bytes)))
639 (unless (zerop residual-objects)
640 (format t " Other types: ~:D bytes, ~:D object~:P.~%"
641 residual-bytes residual-objects))))
643 (format t " ~:(~A~) instance total: ~:D bytes, ~:D object~:P.~%"
644 space total-bytes total-objects)))
648 ;;;; PRINT-ALLOCATED-OBJECTS
650 (defun print-allocated-objects (space &key (percent 0) (pages 5)
651 type larger smaller count
652 (stream *standard-output*))
653 (declare (type (integer 0 99) percent) (type index pages)
654 (type stream stream) (type spaces space)
655 (type (or index null) type larger smaller count))
656 (multiple-value-bind (start-sap end-sap) (space-bounds space)
657 (let* ((space-start (sap-int start-sap))
658 (space-end (sap-int end-sap))
659 (space-size (- space-end space-start))
660 (pagesize (sb!sys:get-page-size))
661 (start (+ space-start (round (* space-size percent) 100)))
662 (printed-conses (make-hash-table :test 'eq))
666 (declare (type (unsigned-byte 32) last-page start)
667 (fixnum pages-so-far count-so-far pagesize))
668 (labels ((note-conses (x)
669 (unless (or (atom x) (gethash x printed-conses))
670 (setf (gethash x printed-conses) t)
671 (note-conses (car x))
672 (note-conses (cdr x)))))
673 (map-allocated-objects
674 (lambda (obj obj-type size)
675 (let ((addr (get-lisp-obj-address obj)))
676 (when (>= addr start)
678 (> count-so-far count)
679 (> pages-so-far pages))
680 (return-from print-allocated-objects (values)))
683 (let ((this-page (* (the (values (unsigned-byte 32) t)
684 (truncate addr pagesize))
686 (declare (type (unsigned-byte 32) this-page))
687 (when (/= this-page last-page)
688 (when (< pages-so-far pages)
689 ;; FIXME: What is this? (ERROR "Argh..")? or
690 ;; a warning? or code that can be removed
691 ;; once the system is stable? or what?
692 (format stream "~2&**** Page ~W, address ~X:~%"
694 (setq last-page this-page)
695 (incf pages-so-far))))
697 (when (and (or (not type) (eql obj-type type))
698 (or (not smaller) (<= size smaller))
699 (or (not larger) (>= size larger)))
702 (#.code-header-widetag
703 (let ((dinfo (%code-debug-info obj)))
704 (format stream "~&Code object: ~S~%"
706 (sb!c::compiled-debug-info-name dinfo)
708 (#.symbol-header-widetag
709 (format stream "~&~S~%" obj))
710 (#.list-pointer-lowtag
711 (unless (gethash obj printed-conses)
713 (let ((*print-circle* t)
716 (format stream "~&~S~%" obj))))
719 (let ((str (write-to-string obj :level 5 :length 10
721 (unless (eql type instance-header-widetag)
722 (format stream "~S: " (type-of obj)))
723 (format stream "~A~%"
724 (subseq str 0 (min (length str) 60))))))))))
728 ;;;; LIST-ALLOCATED-OBJECTS, LIST-REFERENCING-OBJECTS
730 (defvar *ignore-after* nil)
732 (defun valid-obj (space x)
733 (or (not (eq space :dynamic))
734 ;; this test looks bogus if the allocator doesn't work linearly,
735 ;; which I suspect is the case for GENCGC. -- CSR, 2004-06-29
736 (< (get-lisp-obj-address x) (get-lisp-obj-address *ignore-after*))))
738 (defun maybe-cons (space x stuff)
739 (if (valid-obj space x)
743 (defun list-allocated-objects (space &key type larger smaller count
745 (declare (type spaces space)
746 (type (or index null) larger smaller type count)
747 (type (or function null) test)
748 (inline map-allocated-objects))
749 (unless *ignore-after*
750 (setq *ignore-after* (cons 1 2)))
751 (collect ((counted 0 1+))
753 (map-allocated-objects
754 (lambda (obj obj-type size)
755 (when (and (or (not type) (eql obj-type type))
756 (or (not smaller) (<= size smaller))
757 (or (not larger) (>= size larger))
758 (or (not test) (funcall test obj)))
759 (setq res (maybe-cons space obj res))
760 (when (and count (>= (counted) count))
761 (return-from list-allocated-objects res))))
765 (defun map-referencing-objects (fun space object)
766 (declare (type spaces space) (inline map-allocated-objects))
767 (unless *ignore-after*
768 (setq *ignore-after* (cons 1 2)))
769 (flet ((maybe-call (fun obj)
770 (when (valid-obj space obj)
772 (map-allocated-objects
773 (lambda (obj obj-type size)
774 (declare (ignore obj-type size))
777 (when (or (eq (car obj) object)
778 (eq (cdr obj) object))
779 (maybe-call fun obj)))
781 (dotimes (i (%instance-length obj))
782 (when (eq (%instance-ref obj i) object)
786 (let ((length (get-header-data obj)))
787 (do ((i code-constants-offset (1+ i)))
789 (when (eq (code-header-ref obj i) object)
793 (dotimes (i (length obj))
794 (when (eq (svref obj i) object)
798 (when (or (eq (symbol-name obj) object)
799 (eq (symbol-package obj) object)
800 (eq (symbol-plist obj) object)
802 (eq (symbol-value obj) object)))
803 (maybe-call fun obj)))))
806 (defun list-referencing-objects (space object)
808 (map-referencing-objects
809 (lambda (obj) (res obj)) space object)