1 /* Support for complaint handling during symbol reading in GDB.
3 Copyright (C) 1990, 1991, 1992, 1993, 1995, 1998, 1999, 2000, 2002,
4 2004, 2005, 2006 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
24 #include "complaints.h"
25 #include "gdb_assert.h"
29 extern void _initialize_complaints (void);
31 /* Should each complaint message be self explanatory, or should we assume that
32 a series of complaints is being produced? */
34 /* case 1: First message of a series that must
35 start off with explanation. case 2: Subsequent message of a series
36 that needs no explanation (the user already knows we have a problem
37 so we can just state our piece). */
38 enum complaint_series {
39 /* Isolated self explanatory message. */
41 /* First message of a series, includes an explanation. */
43 /* First message of a series, but does not need to include any sort
46 /* Subsequent message of a series that needs no explanation (the
47 user already knows we have a problem so we can just state our
52 /* Structure to manage complaints about symbol file contents. */
60 struct complain *next;
63 /* The explanatory message that should accompany the complaint. The
64 message is in two parts - pre and post - that are printed around
65 the complaint text. */
74 struct complain *root;
76 /* Should each complaint be self explanatory, or should we assume
77 that a series of complaints is being produced? case 0: Isolated
78 self explanatory message. case 1: First message of a series that
79 must start off with explanation. case 2: Subsequent message of a
80 series that needs no explanation (the user already knows we have
81 a problem so we can just state our piece). */
84 /* The explanatory messages that should accompany the complaint.
85 NOTE: cagney/2002-08-14: In a desperate attempt at being vaguely
86 i18n friendly, this is an array of two messages. When present,
87 the PRE and POST EXPLANATION[SERIES] are used to wrap the
89 const struct explanation *explanation;
92 static struct complain complaint_sentinel;
94 /* The symbol table complaint table. */
96 static struct explanation symfile_explanations[] = {
97 { "During symbol reading, ", "." },
98 { "During symbol reading...", "..."},
104 static struct complaints symfile_complaint_book = {
109 struct complaints *symfile_complaints = &symfile_complaint_book;
111 /* Wrapper function to, on-demand, fill in a complaints object. */
113 static struct complaints *
114 get_complaints (struct complaints **c)
118 (*c) = XMALLOC (struct complaints);
119 (*c)->root = &complaint_sentinel;
120 (*c)->series = ISOLATED_MESSAGE;
121 (*c)->explanation = NULL;
125 static struct complain *
126 find_complaint (struct complaints *complaints, const char *file,
127 int line, const char *fmt)
129 struct complain *complaint;
131 /* Find the complaint in the table. A more efficient search
132 algorithm (based on hash table or something) could be used. But
133 that can wait until someone shows evidence that this lookup is
134 a real bottle neck. */
135 for (complaint = complaints->root;
137 complaint = complaint->next)
139 if (complaint->fmt == fmt
140 && complaint->file == file
141 && complaint->line == line)
145 /* Oops not seen before, fill in a new complaint. */
146 complaint = XMALLOC (struct complain);
147 complaint->fmt = fmt;
148 complaint->file = file;
149 complaint->line = line;
150 complaint->counter = 0;
151 complaint->next = NULL;
153 /* File it, return it. */
154 complaint->next = complaints->root;
155 complaints->root = complaint;
160 /* How many complaints about a particular thing should be printed
161 before we stop whining about it? Default is no whining at all,
162 since so many systems have ill-constructed symbol files. */
164 static int stop_whining = 0;
166 /* Print a complaint, and link the complaint block into a chain for
169 static void ATTR_FORMAT (printf, 4, 0)
170 vcomplaint (struct complaints **c, const char *file, int line, const char *fmt,
173 struct complaints *complaints = get_complaints (c);
174 struct complain *complaint = find_complaint (complaints, file, line, fmt);
175 enum complaint_series series;
176 gdb_assert (complaints != NULL);
178 complaint->counter++;
179 if (complaint->counter > stop_whining)
183 series = SUBSEQUENT_MESSAGE;
185 series = complaints->series;
187 if (complaint->file != NULL)
188 internal_vwarning (complaint->file, complaint->line, complaint->fmt, args);
189 else if (deprecated_warning_hook)
190 (*deprecated_warning_hook) (complaint->fmt, args);
193 if (complaints->explanation == NULL)
194 /* A [v]warning() call always appends a newline. */
195 vwarning (complaint->fmt, args);
199 struct cleanup *cleanups;
200 msg = xstrvprintf (complaint->fmt, args);
201 cleanups = make_cleanup (xfree, msg);
203 if (series != SUBSEQUENT_MESSAGE)
206 fprintf_filtered (gdb_stderr, "%s%s%s",
207 complaints->explanation[series].prefix, msg,
208 complaints->explanation[series].postfix);
209 /* Force a line-break after any isolated message. For the
210 other cases, clear_complaints() takes care of any missing
211 trailing newline, the wrap_here() is just a hint. */
212 if (series == ISOLATED_MESSAGE)
213 /* It would be really nice to use begin_line() here.
214 Unfortunately that function doesn't track GDB_STDERR and
215 consequently will sometimes supress a line when it
217 fputs_filtered ("\n", gdb_stderr);
220 do_cleanups (cleanups);
226 case ISOLATED_MESSAGE:
229 complaints->series = SUBSEQUENT_MESSAGE;
231 case SUBSEQUENT_MESSAGE:
232 case SHORT_FIRST_MESSAGE:
233 complaints->series = SUBSEQUENT_MESSAGE;
237 /* If GDB dumps core, we'd like to see the complaints first.
238 Presumably GDB will not be sending so many complaints that this
239 becomes a performance hog. */
241 gdb_flush (gdb_stderr);
245 complaint (struct complaints **complaints, const char *fmt, ...)
248 va_start (args, fmt);
249 vcomplaint (complaints, NULL/*file*/, 0/*line*/, fmt, args);
254 internal_complaint (struct complaints **complaints, const char *file,
255 int line, const char *fmt, ...)
258 va_start (args, fmt);
259 vcomplaint (complaints, file, line, fmt, args);
263 /* Clear out / initialize all complaint counters that have ever been
264 incremented. If LESS_VERBOSE is 1, be less verbose about
265 successive complaints, since the messages are appearing all
266 together during a command that is reporting a contiguous block of
267 complaints (rather than being interleaved with other messages). If
268 noisy is 1, we are in a noisy command, and our caller will print
269 enough context for the user to figure it out. */
272 clear_complaints (struct complaints **c, int less_verbose, int noisy)
274 struct complaints *complaints = get_complaints (c);
277 for (p = complaints->root; p != NULL; p = p->next)
282 switch (complaints->series)
285 /* Haven't yet printed anything. */
287 case SHORT_FIRST_MESSAGE:
288 /* Haven't yet printed anything. */
290 case ISOLATED_MESSAGE:
291 /* The code above, always forces a line-break. No need to do it
294 case SUBSEQUENT_MESSAGE:
295 /* It would be really nice to use begin_line() here.
296 Unfortunately that function doesn't track GDB_STDERR and
297 consequently will sometimes supress a line when it shouldn't. */
298 fputs_unfiltered ("\n", gdb_stderr);
301 internal_error (__FILE__, __LINE__, _("bad switch"));
305 complaints->series = ISOLATED_MESSAGE;
307 complaints->series = FIRST_MESSAGE;
309 complaints->series = SHORT_FIRST_MESSAGE;
313 complaints_show_value (struct ui_file *file, int from_tty,
314 struct cmd_list_element *cmd, const char *value)
316 fprintf_filtered (file, _("Max number of complaints about incorrect"
317 " symbols is %s.\n"),
322 _initialize_complaints (void)
324 add_setshow_zinteger_cmd ("complaints", class_support, &stop_whining, _("\
325 Set max number of complaints about incorrect symbols."), _("\
326 Show max number of complaints about incorrect symbols."), NULL,
327 NULL, complaints_show_value,
328 &setlist, &showlist);