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Revision 1.12 - (show annotations)
Sun Dec 22 15:27:51 1991 UTC (22 years, 4 months ago) by ram
Branch: MAIN
Changes since 1.11: +2 -5 lines
Fixed CODE-BREAKDOWN to format properly now that source-info-file is a string,
not a pathname.
 
1 ;;; -*- Mode: Lisp; Package: VM -*-
2 ;;;
3 ;;; **********************************************************************
4 ;;; This code was written as part of the CMU Common Lisp project at
5 ;;; Carnegie Mellon University, and has been placed in the public domain.
6 ;;; If you want to use this code or any part of CMU Common Lisp, please contact
7 ;;; Scott Fahlman or slisp-group@cs.cmu.edu.
8 ;;;
9 (ext:file-comment
10 "$Header: /tiger/var/lib/cvsroots/cmucl/src/code/room.lisp,v 1.12 1991/12/22 15:27:51 ram Exp $")
11 ;;;
12 ;;; **********************************************************************
13 ;;;
14 ;;; Heap grovelling memory usage stuff.
15 ;;;
16 (in-package "VM")
17 (use-package "SYSTEM")
18 (export '(memory-usage count-no-ops descriptor-vs-non-descriptor-storage
19 structure-usage find-holes print-allocated-objects
20 code-breakdown uninterned-symbol-count))
21 (in-package "LISP")
22 (import '(
23 dynamic-0-space-start dynamic-1-space-start read-only-space-start
24 static-space-start current-dynamic-space-start
25 *static-space-free-pointer* *read-only-space-free-pointer*)
26 "VM")
27 (in-package "VM")
28
29
30 ;;;; Type format database.
31
32 (defstruct room-info
33 ;;
34 ;; The name of this type.
35 (name nil :type symbol)
36 ;;
37 ;; Kind of type (how we determine length).
38 (kind (required-argument)
39 :type (member :lowtag :fixed :header :vector
40 :string :code :closure :structure))
41 ;;
42 ;; Length if fixed-length, shift amount for element size if :vector.
43 (length nil :type (or fixnum null)))
44
45 (defvar *room-info* (make-array 256 :initial-element nil))
46
47
48 (dolist (obj *primitive-objects*)
49 (let ((header (primitive-object-header obj))
50 (lowtag (primitive-object-lowtag obj))
51 (name (primitive-object-name obj))
52 (variable (primitive-object-variable-length obj))
53 (size (primitive-object-size obj)))
54 (cond
55 ((not lowtag))
56 ((not header)
57 (let ((info (make-room-info :name name :kind :lowtag))
58 (lowtag (symbol-value lowtag)))
59 (declare (fixnum lowtag))
60 (dotimes (i 32)
61 (setf (svref *room-info* (logior lowtag (ash i 3))) info))))
62 (variable)
63 (t
64 (setf (svref *room-info* (symbol-value header))
65 (make-room-info :name name :kind :fixed :length size))))))
66
67 (dolist (code (list complex-string-type simple-array-type
68 complex-bit-vector-type complex-vector-type
69 complex-array-type))
70 (setf (svref *room-info* code)
71 (make-room-info :name 'array-header :kind :header)))
72
73 (setf (svref *room-info* bignum-type)
74 (make-room-info :name 'bignum :kind :header))
75
76 (setf (svref *room-info* closure-header-type)
77 (make-room-info :name 'closure :kind :closure))
78
79 (dolist (stuff '((simple-bit-vector-type . -3)
80 (simple-vector-type . 2)
81 (simple-array-unsigned-byte-2-type . -2)
82 (simple-array-unsigned-byte-4-type . -1)
83 (simple-array-unsigned-byte-8-type . 0)
84 (simple-array-unsigned-byte-16-type . 1)
85 (simple-array-unsigned-byte-32-type . 2)
86 (simple-array-single-float-type . 2)
87 (simple-array-double-float-type . 3)))
88 (let ((name (car stuff))
89 (size (cdr stuff)))
90 (setf (svref *room-info* (symbol-value name))
91 (make-room-info :name name :kind :vector :length size))))
92
93 (setf (svref *room-info* simple-string-type)
94 (make-room-info :name 'simple-string-type :kind :string :length 0))
95
96 (setf (svref *room-info* code-header-type)
97 (make-room-info :name 'code :kind :code))
98
99 (setf (svref *room-info* structure-header-type)
100 (make-room-info :name 'structure :kind :structure))
101
102 (deftype spaces () '(member :static :dynamic :read-only))
103
104
105 ;;;; MAP-ALLOCATED-OBJECTS:
106
107 (proclaim '(type fixnum *static-space-free-pointer*
108 *read-only-space-free-pointer* ))
109
110 (defun space-bounds (space)
111 (declare (type spaces space))
112 (ecase space
113 (:static
114 (values (int-sap (static-space-start))
115 (int-sap (* *static-space-free-pointer* word-bytes))))
116 (:read-only
117 (values (int-sap (read-only-space-start))
118 (int-sap (* *read-only-space-free-pointer* word-bytes))))
119 (:dynamic
120 (values (int-sap (current-dynamic-space-start))
121 (dynamic-space-free-pointer)))))
122
123 ;;; SPACE-BYTES -- Internal
124 ;;;
125 ;;; Return the total number of bytes used in Space.
126 ;;;
127 (defun space-bytes (space)
128 (multiple-value-bind (start end)
129 (space-bounds space)
130 (- (sap-int end) (sap-int start))))
131
132 ;;; ROUND-TO-DUALWORD -- Internal
133 ;;;
134 ;;; Round Size (in bytes) up to the next dualword (eight byte) boundry.
135 ;;;
136 (proclaim '(inline round-to-dualword))
137 (defun round-to-dualword (size)
138 (declare (fixnum size))
139 (logand (the fixnum (+ size lowtag-mask)) (lognot lowtag-mask)))
140
141
142 ;;; VECTOR-TOTAL-SIZE -- Internal
143 ;;;
144 ;;; Return the total size of a vector in bytes, including any pad.
145 ;;;
146 (proclaim '(inline vector-total-size))
147 (defun vector-total-size (obj info)
148 (let ((shift (room-info-length info))
149 (len (+ (length (the vector obj))
150 (ecase (room-info-kind info)
151 (:vector 0)
152 (:string 1)))))
153 (declare (type (integer -3 3) shift))
154 (round-to-dualword
155 (+ (* vector-data-offset word-bytes)
156 (the fixnum
157 (if (minusp shift)
158 (ash (the fixnum
159 (+ len (the fixnum
160 (1- (the fixnum (ash 1 (- shift)))))))
161 shift)
162 (ash len shift)))))))
163
164
165 ;;; MAP-ALLOCATED-OBJECTS -- Interface
166 ;;;
167 ;;; Iterate over all the objects allocated in Space, calling Fun with the
168 ;;; object, the object's type code, and the objects total size in bytes,
169 ;;; including any header and padding.
170 ;;;
171 (proclaim '(maybe-inline map-allocated-objects))
172 (defun map-allocated-objects (fun space)
173 (declare (type function fun) (type spaces space))
174 (without-gcing
175 (multiple-value-bind (start end)
176 (space-bounds space)
177 (declare (optimize (speed 3) (safety 0)))
178 (let ((current start)
179 (prev nil))
180 (loop
181 (let* ((header (sap-ref-32 current 0))
182 (header-type (logand header #xFF))
183 (info (svref *room-info* header-type)))
184 (cond
185 ((or (not info)
186 (eq (room-info-kind info) :lowtag))
187 (let ((size (* cons-size word-bytes)))
188 (funcall fun
189 (make-lisp-obj (logior (sap-int current)
190 list-pointer-type))
191 list-pointer-type
192 size)
193 (setq current (sap+ current size))))
194 ((eql header-type closure-header-type)
195 (let* ((obj (make-lisp-obj (logior (sap-int current)
196 function-pointer-type)))
197 (size (round-to-dualword
198 (* (the fixnum (1+ (get-closure-length obj)))
199 word-bytes))))
200 (funcall fun obj header-type size)
201 (setq current (sap+ current size))))
202 ((eq (room-info-kind info) :structure)
203 (let* ((obj (make-lisp-obj
204 (logior (sap-int current) structure-pointer-type)))
205 (size (round-to-dualword
206 (* (+ (c::structure-length obj) 1) word-bytes))))
207 (declare (fixnum size))
208 (funcall fun obj header-type size)
209 (assert (zerop (logand size lowtag-mask)))
210 #+nil
211 (when (> size 200000) (break "Implausible size, prev ~S" prev))
212 (setq prev current)
213 (setq current (sap+ current size))))
214 (t
215 (let* ((obj (make-lisp-obj
216 (logior (sap-int current) other-pointer-type)))
217 (size (ecase (room-info-kind info)
218 (:fixed
219 (assert (or (eql (room-info-length info)
220 (1+ (get-header-data obj)))
221 (floatp obj)))
222 (round-to-dualword
223 (* (room-info-length info) word-bytes)))
224 ((:vector :string)
225 (vector-total-size obj info))
226 (:header
227 (round-to-dualword
228 (* (1+ (get-header-data obj)) word-bytes)))
229 (:code
230 (+ (the fixnum
231 (* (get-header-data obj) word-bytes))
232 (round-to-dualword
233 (* (the fixnum
234 (%primitive code-code-size obj))
235 word-bytes)))))))
236 (declare (fixnum size))
237 (funcall fun obj header-type size)
238 (assert (zerop (logand size lowtag-mask)))
239 #+nil
240 (when (> size 200000)
241 (break "Implausible size, prev ~S" prev))
242 (setq prev current)
243 (setq current (sap+ current size))))))
244 (unless (pointer< current end)
245 (assert (not (pointer> current end)))
246 (return)))
247
248 prev))))
249
250
251 ;;;; MEMORY-USAGE:
252
253 ;;; TYPE-BREAKDOWN -- Interface
254 ;;;
255 ;;; Return a list of 3-lists (bytes object type-name) for the objects
256 ;;; allocated in Space.
257 ;;;
258 (defun type-breakdown (space)
259 (let ((sizes (make-array 256 :initial-element 0 :element-type 'fixnum))
260 (counts (make-array 256 :initial-element 0 :element-type 'fixnum)))
261 (map-allocated-objects
262 #'(lambda (obj type size)
263 (declare (fixnum size) (optimize (speed 3) (safety 0)) (ignore obj))
264 (incf (aref sizes type) size)
265 (incf (aref counts type)))
266 space)
267
268 (let ((totals (make-hash-table :test #'eq)))
269 (dotimes (i 256)
270 (let ((total-count (aref counts i)))
271 (unless (zerop total-count)
272 (let* ((total-size (aref sizes i))
273 (name (room-info-name (aref *room-info* i)))
274 (found (gethash name totals)))
275 (cond (found
276 (incf (first found) total-size)
277 (incf (second found) total-count))
278 (t
279 (setf (gethash name totals)
280 (list total-size total-count name))))))))
281
282 (collect ((totals-list))
283 (maphash #'(lambda (k v)
284 (declare (ignore k))
285 (totals-list v))
286 totals)
287 (sort (totals-list) #'> :key #'first)))))
288
289
290 ;;; PRINT-SUMMARY -- Internal
291 ;;;
292 ;;; Handle the summary printing for MEMORY-USAGE. Totals is a list of lists
293 ;;; (space-name . totals-for-space), where totals-for-space is the list
294 ;;; returned by TYPE-BREAKDOWN.
295 ;;;
296 (defun print-summary (spaces totals)
297 (let ((summary (make-hash-table :test #'eq)))
298 (dolist (space-total totals)
299 (dolist (total (cdr space-total))
300 (push (cons (car space-total) total)
301 (gethash (third total) summary))))
302
303 (collect ((summary-totals))
304 (maphash #'(lambda (k v)
305 (declare (ignore k))
306 (let ((sum 0))
307 (declare (fixnum sum))
308 (dolist (space-total v)
309 (incf sum (first (cdr space-total))))
310 (summary-totals (cons sum v))))
311 summary)
312
313 (format t "~2&Summary of spaces: ~(~{~A ~}~)~%" spaces)
314 (let ((summary-total-bytes 0)
315 (summary-total-objects 0))
316 (declare (fixnum summary-total-bytes summary-total-objects))
317 (dolist (space-totals
318 (mapcar #'cdr (sort (summary-totals) #'> :key #'car)))
319 (let ((total-objects 0)
320 (total-bytes 0)
321 name)
322 (declare (fixnum total-objects total-bytes))
323 (collect ((spaces))
324 (dolist (space-total space-totals)
325 (let ((total (cdr space-total)))
326 (setq name (third total))
327 (incf total-bytes (first total))
328 (incf total-objects (second total))
329 (spaces (cons (car space-total) (first total)))))
330 (format t "~%~A:~% ~:D bytes, ~:D object~:P"
331 name total-bytes total-objects)
332 (dolist (space (spaces))
333 (format t ", ~D% ~(~A~)"
334 (round (* (cdr space) 100) total-bytes)
335 (car space)))
336 (format t ".~%")
337 (incf summary-total-bytes total-bytes)
338 (incf summary-total-objects total-objects))))
339 (format t "~%Summary total:~% ~:D bytes, ~:D objects.~%"
340 summary-total-bytes summary-total-objects)))))
341
342
343 ;;; REPORT-SPACE-TOTAL -- Internal
344 ;;;
345 ;;; Report object usage for a single space.
346 ;;;
347 (defun report-space-total (space-total cutoff)
348 (declare (list space-total) (type (or single-float null) cutoff))
349 (format t "~2&Breakdown for ~(~A~) space:~%" (car space-total))
350 (let* ((types (cdr space-total))
351 (total-bytes (reduce #'+ (mapcar #'first types)))
352 (total-objects (reduce #'+ (mapcar #'second types)))
353 (cutoff-point (if cutoff
354 (truncate (* (float total-bytes) cutoff))
355 0))
356 (reported-bytes 0)
357 (reported-objects 0))
358 (declare (fixnum total-objects total-bytes cutoff-point reported-objects
359 reported-bytes))
360 (loop for (bytes objects name) in types do
361 (when (<= bytes cutoff-point)
362 (format t " ~10:D bytes for ~9:D other object~2:*~P.~%"
363 (- total-bytes reported-bytes)
364 (- total-objects reported-objects))
365 (return))
366 (incf reported-bytes bytes)
367 (incf reported-objects objects)
368 (format t " ~10:D bytes for ~9:D ~(~A~) object~2:*~P.~%"
369 bytes objects name))
370 (format t " ~10:D bytes for ~9:D ~(~A~) object~2:*~P (space total.)~%"
371 total-bytes total-objects (car space-total))))
372
373
374 ;;; MEMORY-USAGE -- Public
375 ;;;
376 (defun memory-usage (&key print-spaces (count-spaces '(:dynamic))
377 (print-summary t) cutoff)
378 "Print out information about the heap memory in use. :Print-Spaces is a list
379 of the spaces to print detailed information for. :Count-Spaces is a list of
380 the spaces to scan. For either one, T means all spaces (:Static, :Dyanmic
381 and :Read-Only.) If :Print-Summary is true, then summary information will be
382 printed. The defaults print only summary information for dynamic space.
383 If true, Cutoff is a fraction of the usage in a report below which types will
384 be combined as OTHER."
385 (declare (type (or single-float null) cutoff))
386 (let* ((spaces (if (eq count-spaces t)
387 '(:static :dynamic :read-only)
388 count-spaces))
389 (totals (mapcar #'(lambda (space)
390 (cons space (type-breakdown space)))
391 spaces)))
392
393 (dolist (space-total totals)
394 (when (or (eq print-spaces t)
395 (member (car space-total) print-spaces))
396 (report-space-total space-total cutoff)))
397
398 (when print-summary (print-summary spaces totals)))
399
400 (values))
401
402
403 ;;; COUNT-NO-OPS -- Public
404 ;;;
405 (defun count-no-ops (space)
406 "Print info about how much code and no-ops there are in Space."
407 (declare (type spaces space))
408 (let ((code-words 0)
409 (no-ops 0)
410 (total-bytes 0))
411 (declare (fixnum code-words no-ops)
412 (type unsigned-byte total-bytes))
413 (map-allocated-objects
414 #'(lambda (obj type size)
415 (declare (fixnum size) (optimize (speed 3) (safety 0)))
416 (when (eql type code-header-type)
417 (incf total-bytes size)
418 (let ((words (truly-the fixnum (%primitive code-code-size obj)))
419 (sap (truly-the system-area-pointer
420 (%primitive code-instructions obj))))
421 (incf code-words words)
422 (dotimes (i words)
423 (when (zerop (sap-ref-32 sap i)) (incf no-ops))))))
424 space)
425
426 (format t
427 "~:D code-object bytes, ~:D code words, with ~:D no-ops (~D%).~%"
428 total-bytes code-words no-ops
429 (round (* no-ops 100) code-words)))
430
431 (values))
432
433
434 ;;; DESCRIPTOR-VS-NON-DESCRIPTOR-STORAGE -- Public
435 ;;;
436 (defun descriptor-vs-non-descriptor-storage (&rest spaces)
437 (let ((descriptor-words 0)
438 (non-descriptor-headers 0)
439 (non-descriptor-bytes 0))
440 (declare (type unsigned-byte descriptor-words non-descriptor-headers
441 non-descriptor-bytes))
442 (dolist (space (or spaces '(:read-only :static :dynamic)))
443 (declare (inline map-allocated-objects))
444 (map-allocated-objects
445 #'(lambda (obj type size)
446 (declare (fixnum size) (optimize (speed 3) (safety 0)))
447 (case type
448 (#.code-header-type
449 (let ((inst-words
450 (truly-the fixnum (%primitive code-code-size obj))))
451 (declare (type fixnum inst-words))
452 (incf non-descriptor-bytes (* inst-words word-bytes))
453 (incf descriptor-words
454 (- (truncate size word-bytes) inst-words))))
455 ((#.bignum-type
456 #.single-float-type
457 #.double-float-type
458 #.simple-string-type
459 #.simple-bit-vector-type
460 #.simple-array-unsigned-byte-2-type
461 #.simple-array-unsigned-byte-4-type
462 #.simple-array-unsigned-byte-8-type
463 #.simple-array-unsigned-byte-16-type
464 #.simple-array-unsigned-byte-32-type
465 #.simple-array-single-float-type
466 #.simple-array-double-float-type)
467 (incf non-descriptor-headers)
468 (incf non-descriptor-bytes (- size word-bytes)))
469 ((#.list-pointer-type
470 #.structure-pointer-type
471 #.ratio-type
472 #.complex-type
473 #.simple-array-type
474 #.simple-vector-type
475 #.complex-string-type
476 #.complex-bit-vector-type
477 #.complex-vector-type
478 #.complex-array-type
479 #.closure-header-type
480 #.funcallable-instance-header-type
481 #.value-cell-header-type
482 #.symbol-header-type
483 #.sap-type
484 #.weak-pointer-type
485 #.structure-header-type)
486 (incf descriptor-words (truncate size word-bytes)))
487 (t
488 (error "Bogus type: ~D" type))))
489 space))
490 (format t "~:D words allocated for descriptor objects.~%"
491 descriptor-words)
492 (format t "~:D bytes data/~:D words header for non-descriptor objects.~%"
493 non-descriptor-bytes non-descriptor-headers)
494 (values)))
495
496
497 ;;; STRUCTURE-USAGE -- Public
498 ;;;
499 (defun structure-usage (space &key (top-n 15))
500 (declare (type spaces space) (type (or fixnum null) top-n))
501 "Print a breakdown by structure type of all the structures allocated in
502 Space. If TOP-N is true, print only information for the the TOP-N types with
503 largest usage."
504 (format t "~2&~@[Top ~D ~]~(~A~) structure types:~%" top-n space)
505 (let ((totals (make-hash-table :test #'eq))
506 (total-objects 0)
507 (total-bytes 0))
508 (declare (fixnum total-objects total-bytes))
509 (map-allocated-objects
510 #'(lambda (obj type size)
511 (declare (fixnum size) (optimize (speed 3) (safety 0)))
512 (when (eql type structure-header-type)
513 (incf total-objects)
514 (incf total-bytes size)
515 (let* ((name (structure-ref obj 0))
516 (found (gethash name totals)))
517 (cond (found
518 (incf (the fixnum (car found)))
519 (incf (the fixnum (cdr found)) size))
520 (t
521 (setf (gethash name totals) (cons 1 size)))))))
522 space)
523
524 (collect ((totals-list))
525 (maphash #'(lambda (name what)
526 (totals-list (cons name what)))
527 totals)
528 (let ((sorted (sort (totals-list) #'> :key #'cddr))
529 (printed-bytes 0)
530 (printed-objects 0))
531 (declare (fixnum printed-bytes printed-objects))
532 (dolist (what (if top-n
533 (subseq sorted 0 (min (length sorted) top-n))
534 sorted))
535 (let ((bytes (cddr what))
536 (objects (cadr what)))
537 (incf printed-bytes bytes)
538 (incf printed-objects objects)
539 (format t " ~S: ~:D bytes, ~D object~:P.~%" (car what)
540 bytes objects)))
541
542 (let ((residual-objects (- total-objects printed-objects))
543 (residual-bytes (- total-bytes printed-bytes)))
544 (unless (zerop residual-objects)
545 (format t " Other types: ~:D bytes, ~D: object~:P.~%"
546 residual-bytes residual-objects))))
547
548 (format t " ~:(~A~) structure total: ~:D bytes, ~:D object~:P.~%"
549 space total-bytes total-objects)))
550
551 (values))
552
553
554 ;;; FIND-HOLES -- Public
555 ;;;
556 (defun find-holes (&rest spaces)
557 (dolist (space (or spaces '(:read-only :static :dynamic)))
558 (format t "In ~A space:~%" space)
559 (let ((start-addr nil)
560 (total-bytes 0))
561 (declare (type (or null (unsigned-byte 32)) start-addr)
562 (type (unsigned-byte 32) total-bytes))
563 (map-allocated-objects
564 #'(lambda (object typecode bytes)
565 (declare (ignore typecode)
566 (type (unsigned-byte 32) bytes))
567 (if (and (consp object)
568 (eql (car object) 0)
569 (eql (cdr object) 0))
570 (if start-addr
571 (incf total-bytes bytes)
572 (setf start-addr (di::get-lisp-obj-address object)
573 total-bytes bytes))
574 (when start-addr
575 (format t "~D bytes at #x~X~%" total-bytes start-addr)
576 (setf start-addr nil))))
577 space)
578 (when start-addr
579 (format t "~D bytes at #x~X~%" total-bytes start-addr))))
580 (values))
581
582
583 ;;; Print allocated objects:
584
585 (defun print-allocated-objects (space &key (percent 0) (pages 5)
586 type larger smaller count
587 (stream *standard-output*))
588 (declare (type (integer 0 99) percent) (type c::index pages)
589 (type stream stream) (type spaces space)
590 (type (or c::index null) type larger smaller count))
591 (multiple-value-bind (start-sap end-sap)
592 (space-bounds space)
593 (let* ((space-start (sap-int start-sap))
594 (space-end (sap-int end-sap))
595 (space-size (- space-end space-start))
596 (pagesize (system:get-page-size))
597 (start (+ space-start (round (* space-size percent) 100)))
598 (pages-so-far 0)
599 (count-so-far 0)
600 (last-page 0))
601 (declare (type (unsigned-byte 32) last-page start)
602 (fixnum pages-so-far count-so-far pagesize))
603 (map-allocated-objects
604 #'(lambda (obj obj-type size)
605 (declare (optimize (speed 3) (safety 0)))
606 (let ((addr (get-lisp-obj-address obj)))
607 (when (>= addr start)
608 (when (if count
609 (> count-so-far count)
610 (> pages-so-far pages))
611 (return-from print-allocated-objects (values)))
612
613 (unless count
614 (let ((this-page (* (the (unsigned-byte 32)
615 (truncate addr pagesize))
616 pagesize)))
617 (declare (type (unsigned-byte 32) this-page))
618 (when (/= this-page last-page)
619 (when (< pages-so-far pages)
620 (format stream "~2&**** Page ~D, address ~X:~%"
621 pages-so-far addr))
622 (setq last-page this-page)
623 (incf pages-so-far))))
624
625 (when (and (or (not type) (eql obj-type type))
626 (or (not smaller) (<= size smaller))
627 (or (not larger) (>= size larger)))
628 (incf count-so-far)
629 (case type
630 (#.code-header-type
631 (let ((dinfo (code-debug-info obj)))
632 (format stream "~&Code object: ~S~%"
633 (if dinfo
634 (c::compiled-debug-info-name dinfo)
635 "No debug info."))))
636 (#.symbol-header-type
637 (format stream "~&~S~%" obj))
638 (#.list-pointer-type
639 (write-char #\. stream))
640 (t
641 (fresh-line stream)
642 (let ((str (write-to-string obj :level 5 :length 10
643 :pretty nil)))
644 (unless (eql type structure-header-type)
645 (format stream "~S: " (type-of obj)))
646 (format stream "~A~%"
647 (subseq str 0 (min (length str) 60))))))))))
648 space)))
649 (values))
650
651 ;;;; Misc:
652
653 (defun uninterned-symbol-count (space)
654 (declare (type spaces space))
655 (let ((total 0)
656 (uninterned 0))
657 (map-allocated-objects
658 #'(lambda (obj type size)
659 (declare (ignore type size))
660 (when (symbolp obj)
661 (incf total)
662 (unless (symbol-package obj)
663 (incf uninterned))))
664 space)
665 (values uninterned (float (/ uninterned total)))))
666
667
668 (defun code-breakdown (space &key (how :package))
669 (declare (type spaces space) (type (member :file :package) how))
670 (let ((info (make-hash-table :test (if (eq how :package) #'equal #'eq))))
671 (map-allocated-objects
672 #'(lambda (obj type size)
673 (when (eql type code-header-type)
674 (let* ((dinfo (code-debug-info obj))
675 (name (if dinfo
676 (ecase how
677 (:package (c::compiled-debug-info-package dinfo))
678 (:file
679 (let ((source
680 (first (c::compiled-debug-info-source
681 dinfo))))
682 (if (eq (c::debug-source-from source)
683 :file)
684 (c::debug-source-name source)
685 "FROM LISP"))))
686 "UNKNOWN"))
687 (found (or (gethash name info)
688 (setf (gethash name info) (cons 0 0)))))
689 (incf (car found))
690 (incf (cdr found) size))))
691 space)
692
693 (collect ((res))
694 (maphash #'(lambda (k v)
695 (res (list v k)))
696 info)
697 (loop for ((count . size) name) in (sort (res) #'> :key #'cdar) do
698 (format t "~20@A: ~:D bytes, ~:D object~:P.~%"
699 (subseq name (max (- (length name) 20) 0))
700 size count))))
701 (values))
702
703
704 ;;;; Histogram interface. Uses Scott's Hist package.
705 #+nil
706 (defun memory-histogram (space &key (low 4) (high 20)
707 (bucket-size 1)
708 (function
709 #'(lambda (obj type size)
710 (declare (ignore obj type) (fixnum size))
711 (integer-length (1- size))))
712 (type nil))
713 (let ((function (if (eval:interpreted-function-p function)
714 (compile nil function)
715 function)))
716 (hist:hist (low high bucket-size)
717 (map-allocated-objects
718 #'(lambda (obj this-type size)
719 (when (or (not type) (eql this-type type))
720 (hist:hist-record (funcall function obj type size))))
721 space)))
722 (values))
723
724 ;;; Return the number of fbound constants in a code object.
725 ;;;
726 (defun code-object-calls (obj)
727 (loop for i from code-constants-offset below (get-header-data obj)
728 count (find-code-object (code-header-ref obj i))))
729
730 ;;; Return the number of calls in Obj to functions with <= N calls. Calls is
731 ;;; an eq hashtable translating code objects to the number of references.
732 ;;;
733 (defun code-object-leaf-calls (obj n calls)
734 (loop for i from code-constants-offset below (get-header-data obj)
735 count (let ((code (find-code-object (code-header-ref obj i))))
736 (and code (<= (gethash code calls 0) n)))))
737
738 #+nil
739 (defun report-histogram (table &key (low 1) (high 20) (bucket-size 1)
740 (function #'identity))
741 "Given a hashtable, print a histogram of the contents. Function should give
742 the value to plot when applied to the hashtable values."
743 (let ((function (if (eval:interpreted-function-p function)
744 (compile nil function)
745 function)))
746 (hist:hist (low high bucket-size)
747 (loop for count being each hash-value in table do
748 (hist:hist-record (funcall function count))))))
749
750 (defun report-top-n (table &key (top-n 20) (function #'identity))
751 "Report the Top-N entries in the hashtable Table, when sorted by Function
752 applied to the hash value. If Top-N is NIL, report all entries."
753 (let ((function (if (eval:interpreted-function-p function)
754 (compile nil function)
755 function)))
756 (collect ((totals-list)
757 (total-val 0 +))
758 (maphash #'(lambda (name what)
759 (let ((val (funcall function what)))
760 (totals-list (cons name val))
761 (total-val val)))
762 table)
763 (let ((sorted (sort (totals-list) #'> :key #'cdr))
764 (printed 0))
765 (declare (fixnum printed))
766 (dolist (what (if top-n
767 (subseq sorted 0 (min (length sorted) top-n))
768 sorted))
769 (let ((val (cdr what)))
770 (incf printed val)
771 (format t "~8:D: ~S~%" val (car what))))
772
773 (let ((residual (- (total-val) printed)))
774 (unless (zerop residual)
775 (format t "~8:D: Other~%" residual))))
776
777 (format t "~8:D: Total~%" (total-val))))
778 (values))
779
780
781 ;;; Given any Lisp object, return the associated code object, or NIL.
782 ;;;
783 (defun find-code-object (const)
784 (flet ((frob (def)
785 (function-code-header
786 (ecase (get-type def)
787 ((#.closure-header-type
788 #.funcallable-instance-header-type)
789 (%closure-function def))
790 (#.function-header-type
791 def)))))
792 (typecase const
793 (function (frob const))
794 (symbol
795 (if (fboundp const)
796 (frob (symbol-function const))
797 nil))
798 (t nil))))
799
800
801 (defun find-caller-counts (space)
802 "Return a hashtable mapping each function in for which a call appears in
803 Space to the number of times such a call appears."
804 (let ((counts (make-hash-table :test #'eq)))
805 (map-allocated-objects
806 #'(lambda (obj type size)
807 (declare (ignore size))
808 (when (eql type code-header-type)
809 (loop for i from code-constants-offset below (get-header-data obj)
810 do (let ((code (find-code-object (code-header-ref obj i))))
811 (when code
812 (incf (gethash code counts 0)))))))
813 space)
814 counts))
815
816 (defun find-high-callers (space &key (above 10) table (threshold 2))
817 "Return a hashtable translating code objects to function constant counts for
818 all code objects in Space with more than Above function constants."
819 (let ((counts (make-hash-table :test #'eq)))
820 (map-allocated-objects
821 #'(lambda (obj type size)
822 (declare (ignore size))
823 (when (eql type code-header-type)
824 (let ((count (if table
825 (code-object-leaf-calls obj threshold table)
826 (code-object-calls obj))))
827 (when (> count above)
828 (setf (gethash obj counts) count)))))
829 space)
830 counts))

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