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;;;; chicken-profile.scm - Formatted display of profile outputs - felix -*- Scheme -*-
;
; Copyright (c) 2008-2016, The CHICKEN Team
; Copyright (c) 2000-2007, Felix L. Winkelmann
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
; conditions are met:
;
; Redistributions of source code must retain the above copyright notice, this list of conditions and the following
; disclaimer.
; Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
; disclaimer in the documentation and/or other materials provided with the distribution.
; Neither the name of the author nor the names of its contributors may be used to endorse or promote
; products derived from this software without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
; AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
; OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
; POSSIBILITY OF SUCH DAMAGE.
(declare
(block)
(uses srfi-1
srfi-13
srfi-69
posix
utils))
(define sort-by #f)
(define file #f)
(define no-unused #f)
(define seconds-digits 3)
(define average-digits 3)
(define percent-digits 3)
(define top 0)
(define (print-usage)
(display #<#EOF
Usage: chicken-profile [FILENAME | OPTION] ...
-sort-by-calls sort output by call frequency
-sort-by-time sort output by procedure execution time
-sort-by-avg sort output by average procedure execution time
-sort-by-name sort output alphabetically by procedure name
-decimals DDD set number of decimals for seconds, average and
percent columns (three digits, default: #{seconds-digits}#{average-digits}#{percent-digits})
-no-unused remove procedures that are never called
-top N display only the top N entries
-help show this text and exit
-version show version and exit
-release show release number and exit
FILENAME defaults to the `PROFILE.<number>', selecting the one with
the highest modification time, in case multiple profiles exist.
EOF
;|
)
(exit 64) )
(define (run args)
(let loop ([args args])
(if (null? args)
(begin
(unless file
(set! file
(let ((fs (glob "PROFILE.*")))
(if (null? fs)
(error "no PROFILEs found")
(first (sort fs
(lambda (f1 f2)
(> (file-modification-time f1)
(file-modification-time f2))) ) ) ) ) ) )
(write-profile) )
(let ([arg (car args)]
[rest (cdr args)] )
(define (next-arg)
(if (null? rest)
(error "missing argument to option" arg)
(let ((narg (car rest)))
(set! rest (cdr rest))
narg)))
(define (next-number)
(let ((n (string->number (next-arg))))
(if (and n (> n 0)) n (error "invalid argument to option" arg))))
(cond
[(member arg '("-h" "-help" "--help")) (print-usage)]
[(string=? arg "-version")
(print "chicken-profile - Version " (chicken-version))
(exit) ]
[(string=? arg "-release")
(print (chicken-version))
(exit) ]
[(string=? arg "-no-unused") (set! no-unused #t)]
[(string=? arg "-top") (set! top (next-number))]
[(string=? arg "-sort-by-calls") (set! sort-by sort-by-calls)]
[(string=? arg "-sort-by-time") (set! sort-by sort-by-time)]
[(string=? arg "-sort-by-avg") (set! sort-by sort-by-avg)]
[(string=? arg "-sort-by-name") (set! sort-by sort-by-name)]
[(string=? arg "-decimals") (set-decimals (next-arg))]
[(and (> (string-length arg) 1) (char=? #\- (string-ref arg 0)))
(error "invalid option" arg) ]
[file (print-usage)]
[else (set! file arg)] )
(loop rest) ) ) ) )
(define (sort-by-calls x y)
(let ([c1 (second x)]
[c2 (second y)] )
(if (eqv? c1 c2)
(> (third x) (third y))
(if c1 (if c2 (> c1 c2) #t) #t) ) ) )
(define (sort-by-time x y)
(let ([c1 (third x)]
[c2 (third y)] )
(if (= c1 c2)
(> (second x) (second y))
(> c1 c2) ) ) )
(define (sort-by-avg x y)
(let ([c1 (cadddr x)]
[c2 (cadddr y)] )
(if (eqv? c1 c2)
(> (third x) (third y))
(> c1 c2) ) ) )
(define (sort-by-name x y)
(string<? (symbol->string (first x)) (symbol->string (first y))) )
(set! sort-by sort-by-time)
(define (set-decimals arg)
(if (= (string-length arg) 3)
(begin
(define (arg-digit n)
(let ((n (- (char->integer (string-ref arg n))
(char->integer #\0))))
(if (<= 0 n 9)
(if (= n 9) 8 n) ; 9 => overflow in format-real
(error "invalid argument to -decimals option" arg))))
(set! seconds-digits (arg-digit 0))
(set! average-digits (arg-digit 1))
(set! percent-digits (arg-digit 2)))
(error "invalid argument to -decimals option" arg)))
(define (read-profile)
(let* ((hash (make-hash-table eq?))
(header (read))
(type (if (symbol? header) header 'instrumented)))
(do ((line (if (symbol? header) (read) header) (read)))
((eof-object? line))
(hash-table-set!
hash (first line)
(map (lambda (x y) (and x y (+ x y)))
(hash-table-ref/default hash (first line) '(0 0))
(cdr line))))
(cons type (hash-table->alist hash))))
(define (format-string str cols #!optional right (padc #\space))
(let* ((len (string-length str))
(pad (make-string (fxmax 0 (fx- cols len)) padc)) )
(if right
(string-append pad str)
(string-append str pad) ) ) )
(define (format-real n d)
(let ((exact-value (inexact->exact (truncate n))))
(string-append
(number->string exact-value)
(if (> d 0) "." "")
(substring
(number->string
(inexact->exact
(truncate
(* (- n exact-value -1) (expt 10 d)))))
1 (+ d 1)))))
(define (write-profile)
(print "reading `" file "' ...\n")
(let* ((type&data0 (with-input-from-file file read-profile))
(type (car type&data0))
(data0 (cdr type&data0))
;; Instrumented profiling results in total runtime being
;; counted for the outermost "main" procedure, while
;; statistical counts time spent only inside the procedure
;; itself. Ideally we'd have both, but that's tricky to do.
(total-t (foldl (if (eq? type 'instrumented)
(lambda (r t) (max r (third t)))
(lambda (r t) (+ r (third t))))
0 data0))
(data (sort (map
(lambda (t)
(append
t
(let ((c (second t)) ; count
(t (third t))) ; time tallied to procedure
(list (or (and c (> c 0) (/ t c)) ; time / count
0)
(or (and (> total-t 0) (* (/ t total-t) 100)) ; % of total-time
0)
))))
data0)
sort-by)))
(if (< 0 top (length data))
(set! data (take data top)))
(set! data (map (lambda (entry)
(let ([c (second entry)] ; count
[t (third entry)] ; total time
[a (fourth entry)] ; average time
[p (fifth entry)] ) ; % of max time
(list (##sys#symbol->qualified-string (first entry))
(if (not c) "overflow" (number->string c))
(format-real (/ t 1000) seconds-digits)
(format-real (/ a 1000) average-digits)
(format-real p percent-digits))))
(remove (lambda (entry)
(if (second entry)
(and (zero? (second entry)) no-unused)
#f) )
data)))
(let* ([headers (list "procedure" "calls" "seconds" "average" "percent")]
[alignments (list #f #t #t #t #t)]
[spacing 2]
[spacer (make-string spacing #\space)]
[column-widths (fold
(lambda (row max-widths)
(map max (map string-length row) max-widths))
(list 0 0 0 0 0)
(cons headers data))])
(define (print-row row)
(print (string-join (map format-string row column-widths alignments) spacer)))
(print-row headers)
(print (make-string (+ (reduce + 0 column-widths)
(* spacing (- (length alignments) 1)))
#\-))
(for-each print-row data))))
(run (command-line-arguments))
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