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e39bbe80 | 1 | ;;;; Copyright (C) 1996, 1997, 1998, 1999, 2001 Free Software Foundation |
4fe4070a MD |
2 | ;;;; |
3 | ;;;; This program is free software; you can redistribute it and/or modify | |
4 | ;;;; it under the terms of the GNU General Public License as published by | |
5 | ;;;; the Free Software Foundation; either version 2, or (at your option) | |
6 | ;;;; any later version. | |
7 | ;;;; | |
8 | ;;;; This program is distributed in the hope that it will be useful, | |
9 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | ;;;; GNU General Public License for more details. | |
12 | ;;;; | |
13 | ;;;; You should have received a copy of the GNU General Public License | |
14 | ;;;; along with this software; see the file COPYING. If not, write to | |
15328041 JB |
15 | ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | ;;;; Boston, MA 02111-1307 USA | |
4fe4070a | 17 | ;;;; |
a482f2cc MV |
18 | ;;;; As a special exception, the Free Software Foundation gives permission |
19 | ;;;; for additional uses of the text contained in its release of GUILE. | |
20 | ;;;; | |
21 | ;;;; The exception is that, if you link the GUILE library with other files | |
22 | ;;;; to produce an executable, this does not by itself cause the | |
23 | ;;;; resulting executable to be covered by the GNU General Public License. | |
24 | ;;;; Your use of that executable is in no way restricted on account of | |
25 | ;;;; linking the GUILE library code into it. | |
26 | ;;;; | |
27 | ;;;; This exception does not however invalidate any other reasons why | |
28 | ;;;; the executable file might be covered by the GNU General Public License. | |
29 | ;;;; | |
30 | ;;;; This exception applies only to the code released by the | |
31 | ;;;; Free Software Foundation under the name GUILE. If you copy | |
32 | ;;;; code from other Free Software Foundation releases into a copy of | |
33 | ;;;; GUILE, as the General Public License permits, the exception does | |
34 | ;;;; not apply to the code that you add in this way. To avoid misleading | |
35 | ;;;; anyone as to the status of such modified files, you must delete | |
36 | ;;;; this exception notice from them. | |
37 | ;;;; | |
38 | ;;;; If you write modifications of your own for GUILE, it is your choice | |
39 | ;;;; whether to permit this exception to apply to your modifications. | |
40 | ;;;; If you do not wish that, delete this exception notice. | |
41 | ;;;; | |
4fe4070a MD |
42 | ;;;; The author can be reached at djurfeldt@nada.kth.se |
43 | ;;;; Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN | |
44 | ;;;; | |
45 | \f | |
46 | ||
8bb7330c | 47 | (define-module (ice-9 debug)) |
4fe4070a MD |
48 | |
49 | \f | |
8ccbf00d MD |
50 | ;;; {Misc} |
51 | ;;; | |
6de43e5f MD |
52 | (define-public (frame-number->index n . stack) |
53 | (let ((stack (if (null? stack) | |
54 | (fluid-ref the-last-stack) | |
55 | (car stack)))) | |
56 | (if (memq 'backwards (debug-options)) | |
57 | n | |
58 | (- (stack-length stack) n 1)))) | |
8ccbf00d MD |
59 | |
60 | \f | |
e6875011 MD |
61 | ;;; {Trace} |
62 | ;;; | |
9a942103 MD |
63 | ;;; This code is just an experimental prototype (e. g., it is not |
64 | ;;; thread safe), but since it's at the same time useful, it's | |
65 | ;;; included anyway. | |
66 | ;;; | |
e6875011 MD |
67 | (define traced-procedures '()) |
68 | ||
69 | (define-public (trace . args) | |
70 | (if (null? args) | |
71 | (nameify traced-procedures) | |
72 | (begin | |
73 | (for-each (lambda (proc) | |
cb3a1784 MD |
74 | (if (not (procedure? proc)) |
75 | (error "trace: Wrong type argument:" proc)) | |
e6875011 MD |
76 | (set-procedure-property! proc 'trace #t) |
77 | (if (not (memq proc traced-procedures)) | |
78 | (set! traced-procedures | |
79 | (cons proc traced-procedures)))) | |
80 | args) | |
d95c0b76 NJ |
81 | (trap-set! apply-frame-handler trace-entry) |
82 | (trap-set! exit-frame-handler trace-exit) | |
83 | ;; We used to reset `trace-level' here to 0, but this is wrong | |
84 | ;; if `trace' itself is being traced, since `trace-exit' will | |
85 | ;; then decrement `trace-level' to -1! It shouldn't actually | |
86 | ;; be necessary to set `trace-level' here at all. | |
e6875011 MD |
87 | (debug-enable 'trace) |
88 | (nameify args)))) | |
89 | ||
90 | (define-public (untrace . args) | |
91 | (if (and (null? args) | |
92 | (not (null? traced-procedures))) | |
93 | (apply untrace traced-procedures) | |
94 | (begin | |
95 | (for-each (lambda (proc) | |
96 | (set-procedure-property! proc 'trace #f) | |
97 | (set! traced-procedures (delq! proc traced-procedures))) | |
98 | args) | |
99 | (if (null? traced-procedures) | |
100 | (debug-disable 'trace)) | |
101 | (nameify args)))) | |
102 | ||
103 | (define (nameify ls) | |
104 | (map (lambda (proc) | |
105 | (let ((name (procedure-name proc))) | |
106 | (or name proc))) | |
107 | ls)) | |
108 | ||
109 | (define trace-level 0) | |
59e1116d | 110 | (add-hook! abort-hook (lambda () (set! trace-level 0))) |
e6875011 | 111 | |
941614c6 NJ |
112 | (define traced-stack-ids (list 'repl-stack)) |
113 | (define trace-all-stacks? #f) | |
114 | ||
115 | (define-public (trace-stack id) | |
116 | "Add ID to the set of stack ids for which tracing is active. | |
117 | If `#t' is in this set, tracing is active regardless of stack context. | |
118 | To remove ID again, use `untrace-stack'. If you add the same ID twice | |
119 | using `trace-stack', you will need to remove it twice." | |
120 | (set! traced-stack-ids (cons id traced-stack-ids)) | |
121 | (set! trace-all-stacks? (memq #t traced-stack-ids))) | |
122 | ||
123 | (define-public (untrace-stack id) | |
124 | "Remove ID from the set of stack ids for which tracing is active." | |
125 | (set! traced-stack-ids (delq1! id traced-stack-ids)) | |
126 | (set! trace-all-stacks? (memq #t traced-stack-ids))) | |
127 | ||
e6875011 | 128 | (define (trace-entry key cont tail) |
941614c6 NJ |
129 | (if (or trace-all-stacks? |
130 | (memq (stack-id cont) traced-stack-ids)) | |
9a942103 MD |
131 | (let ((cep (current-error-port)) |
132 | (frame (last-stack-frame cont))) | |
133 | (if (not tail) | |
134 | (set! trace-level (+ trace-level 1))) | |
135 | (let indent ((n trace-level)) | |
136 | (cond ((> n 1) (display "| " cep) (indent (- n 1))))) | |
08cc62c7 MD |
137 | (display-application frame cep) |
138 | (newline cep))) | |
9a942103 MD |
139 | ;; It's not necessary to call the continuation since |
140 | ;; execution will continue if the handler returns | |
141 | ;(cont #f) | |
142 | ) | |
e6875011 MD |
143 | |
144 | (define (trace-exit key cont retval) | |
941614c6 NJ |
145 | (if (or trace-all-stacks? |
146 | (memq (stack-id cont) traced-stack-ids)) | |
9a942103 MD |
147 | (let ((cep (current-error-port))) |
148 | (set! trace-level (- trace-level 1)) | |
149 | (let indent ((n trace-level)) | |
150 | (cond ((> n 0) (display "| " cep) (indent (- n 1))))) | |
151 | (write retval cep) | |
b89203a1 | 152 | (newline cep)))) |
e6875011 | 153 | |
e6875011 | 154 | \f |
9a942103 MD |
155 | ;;; A fix to get the error handling working together with the module system. |
156 | ;;; | |
296ff5e7 MV |
157 | ;;; XXX - Still needed? |
158 | (module-set! the-root-module 'debug-options debug-options) | |
9a942103 MD |
159 | |
160 | \f | |
e6875011 | 161 | |
61529d8e MD |
162 | (debug-enable 'debug) |
163 | (read-enable 'positions) |