Commit | Line | Data |
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c906108c | 1 | /* Support for complaint handling during symbol reading in GDB. |
b9caf505 | 2 | |
28e7fd62 | 3 | Copyright (C) 1990-2013 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "complaints.h" | |
b9caf505 AC |
22 | #include "gdb_assert.h" |
23 | #include "command.h" | |
c906108c SS |
24 | #include "gdbcmd.h" |
25 | ||
a14ed312 | 26 | extern void _initialize_complaints (void); |
392a587b | 27 | |
aff410f1 MS |
28 | /* Should each complaint message be self explanatory, or should we |
29 | assume that a series of complaints is being produced? */ | |
b9caf505 AC |
30 | |
31 | /* case 1: First message of a series that must | |
32 | start off with explanation. case 2: Subsequent message of a series | |
33 | that needs no explanation (the user already knows we have a problem | |
34 | so we can just state our piece). */ | |
35 | enum complaint_series { | |
36 | /* Isolated self explanatory message. */ | |
37 | ISOLATED_MESSAGE, | |
38 | /* First message of a series, includes an explanation. */ | |
39 | FIRST_MESSAGE, | |
40 | /* First message of a series, but does not need to include any sort | |
41 | of explanation. */ | |
42 | SHORT_FIRST_MESSAGE, | |
43 | /* Subsequent message of a series that needs no explanation (the | |
44 | user already knows we have a problem so we can just state our | |
45 | piece). */ | |
46 | SUBSEQUENT_MESSAGE | |
47 | }; | |
48 | ||
c906108c SS |
49 | /* Structure to manage complaints about symbol file contents. */ |
50 | ||
b9caf505 | 51 | struct complain |
c5aa993b | 52 | { |
b9caf505 AC |
53 | const char *file; |
54 | int line; | |
55 | const char *fmt; | |
56 | int counter; | |
57 | struct complain *next; | |
c906108c SS |
58 | }; |
59 | ||
d9170e22 AC |
60 | /* The explanatory message that should accompany the complaint. The |
61 | message is in two parts - pre and post - that are printed around | |
62 | the complaint text. */ | |
63 | struct explanation | |
64 | { | |
65 | const char *prefix; | |
66 | const char *postfix; | |
67 | }; | |
68 | ||
b9caf505 AC |
69 | struct complaints |
70 | { | |
71 | struct complain *root; | |
c906108c | 72 | |
b9caf505 AC |
73 | /* Should each complaint be self explanatory, or should we assume |
74 | that a series of complaints is being produced? case 0: Isolated | |
75 | self explanatory message. case 1: First message of a series that | |
76 | must start off with explanation. case 2: Subsequent message of a | |
77 | series that needs no explanation (the user already knows we have | |
78 | a problem so we can just state our piece). */ | |
79 | int series; | |
c906108c | 80 | |
b9caf505 AC |
81 | /* The explanatory messages that should accompany the complaint. |
82 | NOTE: cagney/2002-08-14: In a desperate attempt at being vaguely | |
83 | i18n friendly, this is an array of two messages. When present, | |
d9170e22 AC |
84 | the PRE and POST EXPLANATION[SERIES] are used to wrap the |
85 | message. */ | |
86 | const struct explanation *explanation; | |
b9caf505 | 87 | }; |
c906108c | 88 | |
b9caf505 | 89 | static struct complain complaint_sentinel; |
c906108c | 90 | |
b9caf505 | 91 | /* The symbol table complaint table. */ |
c5aa993b | 92 | |
d9170e22 AC |
93 | static struct explanation symfile_explanations[] = { |
94 | { "During symbol reading, ", "." }, | |
95 | { "During symbol reading...", "..."}, | |
96 | { "", "..."}, | |
97 | { "", "..."}, | |
98 | { NULL, NULL } | |
b9caf505 | 99 | }; |
c906108c | 100 | |
b9caf505 AC |
101 | static struct complaints symfile_complaint_book = { |
102 | &complaint_sentinel, | |
103 | 0, | |
104 | symfile_explanations | |
105 | }; | |
106 | struct complaints *symfile_complaints = &symfile_complaint_book; | |
c906108c | 107 | |
b9caf505 AC |
108 | /* Wrapper function to, on-demand, fill in a complaints object. */ |
109 | ||
110 | static struct complaints * | |
111 | get_complaints (struct complaints **c) | |
c906108c | 112 | { |
b9caf505 AC |
113 | if ((*c) != NULL) |
114 | return (*c); | |
115 | (*c) = XMALLOC (struct complaints); | |
116 | (*c)->root = &complaint_sentinel; | |
117 | (*c)->series = ISOLATED_MESSAGE; | |
118 | (*c)->explanation = NULL; | |
119 | return (*c); | |
120 | } | |
c906108c | 121 | |
a0b31db1 | 122 | static struct complain * ATTRIBUTE_PRINTF (4, 0) |
b9caf505 AC |
123 | find_complaint (struct complaints *complaints, const char *file, |
124 | int line, const char *fmt) | |
125 | { | |
126 | struct complain *complaint; | |
127 | ||
128 | /* Find the complaint in the table. A more efficient search | |
129 | algorithm (based on hash table or something) could be used. But | |
130 | that can wait until someone shows evidence that this lookup is | |
131 | a real bottle neck. */ | |
132 | for (complaint = complaints->root; | |
133 | complaint != NULL; | |
134 | complaint = complaint->next) | |
c906108c | 135 | { |
b9caf505 AC |
136 | if (complaint->fmt == fmt |
137 | && complaint->file == file | |
138 | && complaint->line == line) | |
139 | return complaint; | |
c906108c | 140 | } |
b9caf505 AC |
141 | |
142 | /* Oops not seen before, fill in a new complaint. */ | |
143 | complaint = XMALLOC (struct complain); | |
144 | complaint->fmt = fmt; | |
145 | complaint->file = file; | |
146 | complaint->line = line; | |
147 | complaint->counter = 0; | |
148 | complaint->next = NULL; | |
149 | ||
150 | /* File it, return it. */ | |
151 | complaint->next = complaints->root; | |
152 | complaints->root = complaint; | |
153 | return complaint; | |
154 | } | |
155 | ||
156 | ||
157 | /* How many complaints about a particular thing should be printed | |
158 | before we stop whining about it? Default is no whining at all, | |
159 | since so many systems have ill-constructed symbol files. */ | |
160 | ||
a0841d7a | 161 | static int stop_whining = 0; |
b9caf505 AC |
162 | |
163 | /* Print a complaint, and link the complaint block into a chain for | |
164 | later handling. */ | |
165 | ||
a0b31db1 | 166 | static void ATTRIBUTE_PRINTF (4, 0) |
aff410f1 MS |
167 | vcomplaint (struct complaints **c, const char *file, |
168 | int line, const char *fmt, | |
b9caf505 AC |
169 | va_list args) |
170 | { | |
171 | struct complaints *complaints = get_complaints (c); | |
aff410f1 MS |
172 | struct complain *complaint = find_complaint (complaints, file, |
173 | line, fmt); | |
b9caf505 | 174 | enum complaint_series series; |
c5504eaf | 175 | |
b9caf505 AC |
176 | gdb_assert (complaints != NULL); |
177 | ||
178 | complaint->counter++; | |
c5aa993b | 179 | if (complaint->counter > stop_whining) |
b9caf505 AC |
180 | return; |
181 | ||
182 | if (info_verbose) | |
183 | series = SUBSEQUENT_MESSAGE; | |
184 | else | |
185 | series = complaints->series; | |
186 | ||
187 | if (complaint->file != NULL) | |
aff410f1 MS |
188 | internal_vwarning (complaint->file, complaint->line, |
189 | complaint->fmt, args); | |
9a4105ab AC |
190 | else if (deprecated_warning_hook) |
191 | (*deprecated_warning_hook) (complaint->fmt, args); | |
b9caf505 | 192 | else |
c906108c | 193 | { |
b9caf505 | 194 | if (complaints->explanation == NULL) |
cc3b68a5 | 195 | /* A [v]warning() call always appends a newline. */ |
b9caf505 AC |
196 | vwarning (complaint->fmt, args); |
197 | else | |
198 | { | |
199 | char *msg; | |
200 | struct cleanup *cleanups; | |
e623b504 | 201 | msg = xstrvprintf (complaint->fmt, args); |
b9caf505 AC |
202 | cleanups = make_cleanup (xfree, msg); |
203 | wrap_here (""); | |
204 | if (series != SUBSEQUENT_MESSAGE) | |
205 | begin_line (); | |
3d263c1d | 206 | /* XXX: i18n */ |
d9170e22 AC |
207 | fprintf_filtered (gdb_stderr, "%s%s%s", |
208 | complaints->explanation[series].prefix, msg, | |
209 | complaints->explanation[series].postfix); | |
cc3b68a5 AC |
210 | /* Force a line-break after any isolated message. For the |
211 | other cases, clear_complaints() takes care of any missing | |
212 | trailing newline, the wrap_here() is just a hint. */ | |
213 | if (series == ISOLATED_MESSAGE) | |
214 | /* It would be really nice to use begin_line() here. | |
ce2826aa | 215 | Unfortunately that function doesn't track GDB_STDERR and |
cc3b68a5 AC |
216 | consequently will sometimes supress a line when it |
217 | shouldn't. */ | |
218 | fputs_filtered ("\n", gdb_stderr); | |
219 | else | |
220 | wrap_here (""); | |
b9caf505 AC |
221 | do_cleanups (cleanups); |
222 | } | |
c906108c | 223 | } |
c906108c | 224 | |
b9caf505 | 225 | switch (series) |
c906108c | 226 | { |
b9caf505 | 227 | case ISOLATED_MESSAGE: |
c5aa993b | 228 | break; |
b9caf505 AC |
229 | case FIRST_MESSAGE: |
230 | complaints->series = SUBSEQUENT_MESSAGE; | |
231 | break; | |
232 | case SUBSEQUENT_MESSAGE: | |
233 | case SHORT_FIRST_MESSAGE: | |
234 | complaints->series = SUBSEQUENT_MESSAGE; | |
c5aa993b | 235 | break; |
c906108c | 236 | } |
b9caf505 AC |
237 | |
238 | /* If GDB dumps core, we'd like to see the complaints first. | |
239 | Presumably GDB will not be sending so many complaints that this | |
240 | becomes a performance hog. */ | |
241 | ||
6426a772 | 242 | gdb_flush (gdb_stderr); |
b9caf505 AC |
243 | } |
244 | ||
245 | void | |
246 | complaint (struct complaints **complaints, const char *fmt, ...) | |
247 | { | |
248 | va_list args; | |
c5504eaf | 249 | |
b9caf505 AC |
250 | va_start (args, fmt); |
251 | vcomplaint (complaints, NULL/*file*/, 0/*line*/, fmt, args); | |
252 | va_end (args); | |
253 | } | |
254 | ||
255 | void | |
256 | internal_complaint (struct complaints **complaints, const char *file, | |
257 | int line, const char *fmt, ...) | |
258 | { | |
259 | va_list args; | |
260 | va_start (args, fmt); | |
261 | vcomplaint (complaints, file, line, fmt, args); | |
262 | va_end (args); | |
263 | } | |
264 | ||
b9caf505 AC |
265 | /* Clear out / initialize all complaint counters that have ever been |
266 | incremented. If LESS_VERBOSE is 1, be less verbose about | |
267 | successive complaints, since the messages are appearing all | |
268 | together during a command that is reporting a contiguous block of | |
269 | complaints (rather than being interleaved with other messages). If | |
270 | noisy is 1, we are in a noisy command, and our caller will print | |
271 | enough context for the user to figure it out. */ | |
c906108c SS |
272 | |
273 | void | |
b9caf505 | 274 | clear_complaints (struct complaints **c, int less_verbose, int noisy) |
c906108c | 275 | { |
b9caf505 AC |
276 | struct complaints *complaints = get_complaints (c); |
277 | struct complain *p; | |
c906108c | 278 | |
b9caf505 | 279 | for (p = complaints->root; p != NULL; p = p->next) |
c906108c | 280 | { |
c5aa993b | 281 | p->counter = 0; |
c906108c SS |
282 | } |
283 | ||
cc3b68a5 | 284 | switch (complaints->series) |
c906108c | 285 | { |
cc3b68a5 AC |
286 | case FIRST_MESSAGE: |
287 | /* Haven't yet printed anything. */ | |
288 | break; | |
289 | case SHORT_FIRST_MESSAGE: | |
290 | /* Haven't yet printed anything. */ | |
291 | break; | |
292 | case ISOLATED_MESSAGE: | |
293 | /* The code above, always forces a line-break. No need to do it | |
294 | here. */ | |
295 | break; | |
296 | case SUBSEQUENT_MESSAGE: | |
297 | /* It would be really nice to use begin_line() here. | |
ce2826aa | 298 | Unfortunately that function doesn't track GDB_STDERR and |
aff410f1 MS |
299 | consequently will sometimes supress a line when it |
300 | shouldn't. */ | |
cc3b68a5 AC |
301 | fputs_unfiltered ("\n", gdb_stderr); |
302 | break; | |
303 | default: | |
3d263c1d | 304 | internal_error (__FILE__, __LINE__, _("bad switch")); |
c906108c SS |
305 | } |
306 | ||
b9caf505 AC |
307 | if (!less_verbose) |
308 | complaints->series = ISOLATED_MESSAGE; | |
309 | else if (!noisy) | |
310 | complaints->series = FIRST_MESSAGE; | |
311 | else | |
312 | complaints->series = SHORT_FIRST_MESSAGE; | |
c906108c SS |
313 | } |
314 | ||
335cca0d | 315 | static void |
08546159 AC |
316 | complaints_show_value (struct ui_file *file, int from_tty, |
317 | struct cmd_list_element *cmd, const char *value) | |
335cca0d AC |
318 | { |
319 | fprintf_filtered (file, _("Max number of complaints about incorrect" | |
08546159 | 320 | " symbols is %s.\n"), |
335cca0d AC |
321 | value); |
322 | } | |
323 | ||
c906108c | 324 | void |
fba45db2 | 325 | _initialize_complaints (void) |
c906108c | 326 | { |
aff410f1 MS |
327 | add_setshow_zinteger_cmd ("complaints", class_support, |
328 | &stop_whining, _("\ | |
3d263c1d | 329 | Set max number of complaints about incorrect symbols."), _("\ |
335cca0d | 330 | Show max number of complaints about incorrect symbols."), NULL, |
08546159 | 331 | NULL, complaints_show_value, |
b3f42336 | 332 | &setlist, &showlist); |
c906108c | 333 | } |