usage info and comments
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interp
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@ -1,8 +1,73 @@
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;; Does profiling things, mainly space measurements
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;; Does space measurements using spatial
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;; Copyright Andreas Bernauer, 2002
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;;; Entry points:
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;;;
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;;; (PROFILE-SPACE [file-name])
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;;;
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;;; Save output of (SPACE) to a file. The file is either a (fresh)
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;;; temporary file (created with CREATE-TEMP-FILE) or the one
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;;; specified by FILE-NAME. In either cases the FILE-NAME is returned.
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;;;
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;;;
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;;; (PROFILE-RESULT file-name nth)
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;;;
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;;; Return the result of the NTH output in the file named FILE-NAME as
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;;; as SPACE-INFO object (see below for SPACE-INFO).
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;;;
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;;;
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;;; (PROFILE-RESULTS file-name)
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;;;
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;;; Perform a repeated PROFILE-RESULT on FILE-NAME, returning a list
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;;; that contains all SPACE-INFO objects (see below for SPACE-INFO).
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;;;
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;;;
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;;; (MAKE-GNUPLOT-DATA output-file selector space-info-list)
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;;;
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;;; Creates a file named OUTPUT-FILE out of SPACE-INFO-LIST. The
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;;; created file can be used with GNUPLOT (external program, not part
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;;; of SUnet, http://www.gnuplot.info/) to create plot images.
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;;; SELECTOR is a procedure that gets a SPACE-INFO object and returns
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;;; an integer number. See below for possible SELECTORS on SPACE-INFO
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;;; objects.
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;;;
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;;;
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;;; SPACE-INFO object
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;;;
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;;; A container for all the information (SPACE) returns. Try
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;;;
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;;; > ,open spatial
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;;; > (space)
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;;;
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;;; to see, what I mean. See the following record definition for
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;;; selectors and mutators. The lists returned by the selectors may be
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;;; inspected with PURE-COUNT, PURE-BYTES, IMPURE-COUNT, IMPURE-BYTES,
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;;; TOTAL-COUNT, TOTAL-BYTES
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;;;
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;;;
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;;; Possible strategy to profile space usage: Spread calls to
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;;; PROFILE-SPACE throughout your program. After you've finished, call
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;;; PROFILE-RESULTS and feed the resulting list into
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;;; WRITE-GNUPLOT-DATA-FILE. Run GNUPLOT (external program) with this
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;;; file to get a plot image.
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;;;
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;;;
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;;;
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;;; Example:
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;;; (write-gnuplot-data-file "result.dat"
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;;; (lambda (space-info)
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;;; (total-bytes (space-info-total space-info)))
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;;; (profile-results "concatenated-profile-files"))
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;;;
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;;; in GNUPLOT:
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;;; set terminal png
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;;; set output "result.png"
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;;; plot "result.dat" title "My profile" with lines
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(define *debug* #f)
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;; SPACE-INFO
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(define-record-type space-info :space-info
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(make-space-info pair symbol vector closure location cell channel port
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ratnum record continuation extended-number template
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@ -32,6 +97,7 @@
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(bignum space-info-bignum set-space-info-bignum!)
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(total space-info-total set-space-info-total!))
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;; FIELD-INSPECTORS
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(define pure-count first)
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(define pure-bytes second)
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(define impure-count third)
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@ -41,9 +107,8 @@
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(define *run-count* 0)
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(define (set-run-count! x)
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(set! *run-count* x))
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;; PROFILE-SPACE writes result of call to (SPACE) to a file
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(define (profile-space . maybe-file-name)
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(let ((file-name
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(:optional maybe-file-name
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@ -55,13 +120,48 @@
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(close out))
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file-name))
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;; PROFILE-RESULT returns a SPACE-INFO object representing the output
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;; of (SPACE) of the NTH run. If there is no such run, 'EOF is returned.
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(define (profile-result file-name nth)
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(let* ((in (open-input-file file-name))
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(result (get-space-info in nth)))
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(close in)
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result))
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;; PROFILE-RESULTS returns a list of all SPACE-INFO objects that may
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;; be represented in FILE-NAME.
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(define (profile-results file-name)
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(let ((in (open-input-file file-name)))
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(let loop ((space-info (get-space-info in 'first))
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(result '()))
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(if (eq? 'eof space-info)
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(reverse result)
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(loop (get-space-info in 'first)
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(cons space-info result))))))
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;; WRITE-GNUPLOT-DATA-FILE converts a SPACE-INFO-LIST into a data file
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;; for a simple 2D plot, readable by GNUPLOT (external program, not
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;; part of SUnet, http://www.gnuplot.info/)
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(define (write-gnuplot-data-file output-file selector space-info-list)
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(let ((out (open-output-file output-file)))
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(display "# generated by profile.scm\n" out)
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(let loop ((count 0)
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(space-info-list space-info-list))
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(if (null? space-info-list)
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(close out)
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(begin
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(display count out)
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(display " " out)
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(display (selector (car space-info-list)) out)
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(newline out)
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(loop (+ 1 count)
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(cdr space-info-list)))))))
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;; GET-SPACE-INFO returns the result of the NTH call to (SPACE) stored
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;; in IN. If NTH is 'FIRST, the SPACE-INFO object representing the
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;; next run is returned. If EOF is reached before a run is found, 'EOF
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;; is returned.
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(define (get-space-info in nth)
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(if (eof-object? (skip-runs in nth))
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'eof
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@ -92,19 +192,26 @@
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(get-record "bignum" assoc-list)
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(get-record "total" assoc-list))))))
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;; GET-RECORD returns the data of the element in ASSOC-LIST indexed by KEY.
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(define (get-record key assoc-list)
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(let ((record (assoc key assoc-list)))
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(if record
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(cdr record)
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(error "wrong data format - field missing" 'pair))))
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;; SKIP-HEADERS just skips two lines in IN (the header lines of a
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;; (SPACE) outpout)
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(define (skip-headers in)
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(read-line in)
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(read-line in))
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;; skip runs until write-out is reached
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;; RUN-REGEXP matches the run number in the output file of
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;; PROFILE-SPACE
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(define run-regexp (rx "Run #" (submatch (* digit))))
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;; SKIP-RUNS goes forward in IN, until a run in IN with number NTH is
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;; found. If NTH is 'FIRST, just the next reachable run is reached. If
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;; EOF occurs while searching, 'EOF is returned.
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(define (skip-runs in nth)
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(let loop ((line (read-line in)))
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(if (eof-object? line)
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@ -116,10 +223,15 @@
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nth)))
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#t
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(loop (read-line in)))))))
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;; TRIM-STRING->NUMBER returns the number stored in S, perhaps padded
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;; with spaces on its left: (TRIM-STRING->NUMBER " 123") ==> 123
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(define (trim-string->number s)
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(string->number (string-trim s)))
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;; READ-DATA parses the output of (SPACES). It expects the next line
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;; in IN to be the first data line (not a header). It returns an
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;; a-list (row name . data-list)
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(define (read-data in)
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(let loop ((count 0)
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(line (read-line in))
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@ -140,27 +252,3 @@
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assoc-list))
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assoc-list)))
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(define (profile-results file-name)
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(let ((in (open-input-file file-name)))
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(let loop ((space-info (get-space-info in 'first))
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(result '()))
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(if (eq? 'eof space-info)
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(reverse result)
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(loop (get-space-info in 'first)
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(cons space-info result))))))
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(define (make-gnuplot-data output-file selector space-info-list)
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(let ((out (open-output-file output-file)))
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(display "# generated by profile.scm\n" out)
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(let loop ((count 0)
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(space-info-list space-info-list))
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(if (null? space-info-list)
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(close out)
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(begin
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(display count out)
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(display " " out)
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(display (selector (car space-info-list)) out)
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(newline out)
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(loop (+ 1 count)
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(cdr space-info-list)))))))
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