From: Neil Jerram <neil@ossau.uklinux.net>
Cc: guile-devel@gnu.org
Subject: Re: How can I enable tracing in a script?
Date: Wed, 09 Jun 2004 21:23:53 +0100 [thread overview]
Message-ID: <40C771D9.6090804@ossau.uklinux.net> (raw)
In-Reply-To: <87d64sif4f.fsf@offby1.atm01.sea.blarg.net>
[-- Attachment #1: Type: text/plain, Size: 360 bytes --]
Eric Hanchrow wrote:
>(recent CVS guile)
>
>When I run the following script, I want to see something like
>
> [something 3]
> | [something 2]
> | | [something 1]
> | | | [something 0]
> | | | 0
> | | 1
> | 3
> 6
>
>
>
You're missing `with-traps'; see the attached script and output, which I
produced with 1.6.4.
Neil
[-- Attachment #2: tr.scm --]
[-- Type: text/x-scheme, Size: 1106 bytes --]
#!/usr/bin/guile \
--debug -e main -s
!#
(use-modules (ice-9 debug))
(debug-enable 'trace)
(trace-stack #t)
;;(debug-enable 'backtrace)
;;(format #t "~s~%" (debug-options))
;;(format #t "~s~%" (traps))
;;(format #t "~s~%" (evaluator-traps-interface))
;;(format #t "~s~%" (list (@@(ice-9 debug)
;; trace-exit)
;; (@@(ice-9 debug) trace-entry)))
;;(evaluator-traps-interface `( exit-frame-handler ,(@@(ice-9 debug) trace-exit )))
;;(evaluator-traps-interface `(apply-frame-handler ,(@@(ice-9 debug) trace-entry)))
;;(format #t "~s~%" (evaluator-traps-interface))
;;
;;(format (current-error-port) "This message appears on the current error port.~%")
;;(format #t "traced-stack-ids: ~s~%" (@@(ice-9 debug) traced-stack-ids))
;;(format #t "trace-all-stacks? ~s~%" (@@(ice-9 debug) trace-all-stacks?))
(define (something arg)
(if (not (positive? arg))
0
(+ arg (something (- arg 1)))))
(define (main . args)
;; (trace something)
(something (string->number (list-ref (car args) 1))))
(trace something)
(with-traps
(lambda ()
(something 9)))
[-- Attachment #3: output.txt --]
[-- Type: text/plain, Size: 782 bytes --]
[something 9]
| [something 8]
| | [something 7]
| | | [something 6]
| | | | [something 5]
| | | | | [something 4]
| | | | | | [something 3]
| | | | | | | [something 2]
| | | | | | | | [something 1]
| | | | | | | | | [something 0]
| | | | | | | | | 0
| | | | | | | | 1
| | | | | | | 3
| | | | | | 6
| | | | | 10
| | | | 15
| | | 21
| | 28
| 36
45
Backtrace:
In unknown file:
?: 0* (begin (load "./tr.scm") (main (command-line)) (quit))
?: 1* [main ("./tr.scm")]
In ./tr.scm:
30: 2 [something ...
30: 3* [string->number ...
30: 4* [list-ref ("./tr.scm") 1]
./tr.scm:30:30: In procedure list-ref in expression (list-ref (car args) 1):
./tr.scm:30:30: Argument 2 out of range: 1
[-- Attachment #4: Type: text/plain, Size: 143 bytes --]
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prev parent reply other threads:[~2004-06-09 20:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-25 17:35 How can I enable tracing in a script? Eric Hanchrow
2004-06-09 20:23 ` Neil Jerram [this message]
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