/usr/share/acl2-7.2dfsg/books/misc/save-time.lisp is in acl2-books-source 7.2dfsg-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 | ; Copyright (C) 2013, Regents of the University of Texas
; Written by Matt Kaufmann, January, 2012
; License: A 3-clause BSD license. See the LICENSE file distributed with ACL2.
; Thanks to Sarah Weissman for the idea of this book and helpful discussions.
;;; Table of contents
;;; 1. The simplest way to use the save-time utility
;;; 2. How to use this utility to save many times and produce a report
;;; 3. How to save times when certifying a book
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; 0. Introduction
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; While the ACL2 utility time$ provides a way to time evaluation of a form, it
; doesn't provide a way to get your hands within ACL2 on the time that taken to
; do that evaluation. The utility save-time puts that time into the ACL2
; state, where it can be retrieved with the macro (last-time) or viewed with
; the macro (print-last-time). Moreover, you can save a sequence of timings,
; for example for several forms in a book, and display all the times at the end
; using the macro (saved-times).
; Please feel free to extend this book to have additional capabilities that you
; need, and to ask Matt Kaufmann (kaufmann@cs.utexas.edu) for assistance if you
; get stuck when trying to do so.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; 1. Saving the time for a single form
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; (save-time <form>)
; THEN:
; (print-last-time) ; formatted output of runtime elapsed
; or
; (last-time) ; runtime elapsed as a rational number
; Example:
; ACL2 !>(save-time (mini-proveall))
; [.. output omitted ..]
; ACL2 !>(print-last-time)
; 0.48 seconds
; ACL2 !>(last-time)
; 480643/1000000
; ACL2 !>
; If you want to call save-time in an event context, such as within a book or
; as in (progn ... (save-time ...) ...), use keyword argument :eventp t, for
; example as follows.
; (progn ... (save-time <form> :eventp t) ...)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; 2. How to use this utility to save many times and produce a report
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; (save-time <form>)
; or
; (save-time <form> :name <name>)
; or add :eventp t if you want the save-time form to be an event:
; (save-time <event> :eventp t)
; or
; (save-time <event> :name <name> :eventp t)
; Normally you don't need to supply the :name argument, which by default is the
; cadr of a form except in the case of (local <form>) in which case it is
; (recursively) the name of <form>. But there are times where two forms have
; the same name, as with (defun foo ...) and (verify-guards foo ...). And
; there may be times when (cadr form) isn't suitable, as is typically an issue
; for a make-event call. In any such cases, supply :name to be a symbol.
; Ultimately, the times will be printed using the macro call (saved-times).
; Example:
; ACL2 !>(with-output
; :off :all
; (progn
; (save-time (defthm thm1
; (equal (revappend (revappend x y) z)
; (revappend y (append x z))))
; :eventp t)
; (save-time (local (include-book "arithmetic/top-with-meta" :dir :system))
; :eventp t)
; (save-time (defthm thm2
; (equal (nth n (append x y))
; (let ((n (nfix n)))
; (if (< n (len x))
; (nth n x)
; (nth (- n (len x)) y))))
; :hints (("Goal" :induct (nth n x))))
; :eventp t)))
; :SAVE-TIME-STOPPED
; ACL2 !>(saved-times)
;
; arithmetic/top-with-meta: 0.15
; THM2: 0.02
; THM1: 0.00
; :TIMES-PRINTED
; ACL2 !>(saved-times :raw t)
;
; arithmetic/top-with-meta: 957/6250
; THM2: 5027/250000
; THM1: 2449/500000
; :TIMES-PRINTED
; ACL2 !>
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; 3. How to save times when certifying a book
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; If you want to see the times for some events in a book, here's a suggestion.
; Wrap each form of interest in (save-time form :eventp t), supplying a :name
; argument when necessary (as explained above). Then later in the book (say,
; at the end), put (saved-times) or (saved-times :raw t). The output from
; certify-book will include a report on saved times, such as shown above, where
; the saved-times form is evaluated.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(in-package "ACL2")
(defmacro save-time-init ()
'(make-event
(pprogn (f-put-global 'save-time-alist nil state)
(f-put-global 'save-time-temp-stack nil state)
(value '(value-triple nil)))
:check-expansion t))
(save-time-init)
(defmacro save-time-start (eventp)
(let ((form '(mv-let (start-time state)
(read-run-time state)
(f-put-global
'save-time-temp-stack
(cons start-time
(cond
((eql 0 (f-get-global 'make-event-debug-depth state))
nil)
(t (f-get-global 'save-time-temp-stack
state))))
state))))
(cond (eventp
`(local
(make-event
(pprogn
,form
(value '(value-triple :SAVE-TIME-STARTED
:on-skip-proofs t))))))
(t `(pprogn ,form (value nil))))))
(defmacro save-time-stop (name eventp)
(let* ((last-form
(cond (eventp '(value '(value-triple
:SAVE-TIME-STOPPED
:on-skip-proofs t)))
(t `(value ',name))))
(form
`(let ((stack (f-get-global 'save-time-temp-stack state)))
(mv-let (stop-time state)
(read-run-time state)
(pprogn (f-put-global
'save-time-alist
(put-assoc ',name
(- stop-time (car stack))
(f-get-global 'save-time-alist
state)
:test 'eq)
state)
(f-put-global 'save-time-temp-stack
(cdr stack)
state)
,last-form)))))
(cond (eventp
`(local (make-event ,form)))
(t form))))
(defun save-time-name (form)
(let ((er-string "The form ~x0 is not of the form (_ s ...) where s is a ~
symbol. Supply a :NAME argument for save-time."))
(case-match form
(('local f)
(save-time-name f))
((& name . &)
(cond ((atom name) name)
(t (er hard 'save-time er-string form))))
(& nil))))
(defmacro save-time (form &key name eventp)
(let ((prog (if eventp 'progn 'er-progn)))
`(,prog (save-time-start ,eventp)
,form
(save-time-stop ,(or name (save-time-name form))
,eventp))))
(defun merge-cdr-> (l1 l2)
(declare (xargs :mode :program))
; from ACL2 sources (but conditional there on #+acl2-rewrite-meter)
(cond ((null l1) l2)
((null l2) l1)
((> (cdr (car l1)) (cdr (car l2)))
(cons (car l1) (merge-cdr-> (cdr l1) l2)))
(t (cons (car l2) (merge-cdr-> l1 (cdr l2))))))
(defun merge-sort-cdr-> (l)
; from ACL2 sources (but conditional there on #+acl2-rewrite-meter)
(declare (xargs :mode :program))
(cond ((null (cdr l)) l)
(t (merge-cdr-> (merge-sort-cdr-> (evens l))
(merge-sort-cdr-> (odds l))))))
(defun print-saved-times-alist (raw alist ch state)
(declare (xargs :mode :program :stobjs state))
(cond ((endp alist) (newline ch state))
(t (pprogn (newline ch state)
(princ$ (caar alist) ch state)
(princ$ ": " ch state)
(if raw
(princ$ (cdar alist) ch state)
(print-rational-as-decimal (cdar alist) ch state))
(print-saved-times-alist raw (cdr alist) ch state)))))
(defmacro saved-times (&key (sort ':times) channel raw)
(let ((channel (or channel '*standard-co*)))
`(with-output
:off summary
(make-event
(let ((alist (f-get-global 'save-time-alist state))
(sort ,sort))
(pprogn (print-saved-times-alist
,raw
(cond ((eq sort :names) (merge-sort-lexorder alist))
((eq sort :times) (merge-sort-cdr-> alist))
(t alist))
,channel
state)
(value (list 'value-triple :times-printed))))))))
(defmacro last-time ()
`(let ((alist (f-get-global 'save-time-alist state)))
(cond (alist (cdar alist))
(t nil))))
(defmacro print-last-time ()
`(let ((alist (f-get-global 'save-time-alist state)))
(cond (alist
(pprogn (print-rational-as-decimal (cdar alist)
(standard-co state)
state)
(princ$ " seconds" (standard-co state) state)
(newline (standard-co state) state)
(value :invisible)))
(t (er soft 'print-last-time
"There is no last-time to print! Use SAVE-TIME first.")))))
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