1 /* Support for complaint handling during symbol reading in GDB.
3 Copyright (C) 1990, 1991, 1992, 1993, 1995, 1998, 1999, 2000, 2002, 2004,
4 2005, 2006, 2007, 2008, 2009, 2010 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 3 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, see <http://www.gnu.org/licenses/>. */
22 #include "complaints.h"
23 #include "gdb_assert.h"
27 extern void _initialize_complaints (void);
29 /* Should each complaint message be self explanatory, or should we
30 assume that a series of complaints is being produced? */
32 /* case 1: First message of a series that must
33 start off with explanation. case 2: Subsequent message of a series
34 that needs no explanation (the user already knows we have a problem
35 so we can just state our piece). */
36 enum complaint_series {
37 /* Isolated self explanatory message. */
39 /* First message of a series, includes an explanation. */
41 /* First message of a series, but does not need to include any sort
44 /* Subsequent message of a series that needs no explanation (the
45 user already knows we have a problem so we can just state our
50 /* Structure to manage complaints about symbol file contents. */
58 struct complain *next;
61 /* The explanatory message that should accompany the complaint. The
62 message is in two parts - pre and post - that are printed around
63 the complaint text. */
72 struct complain *root;
74 /* Should each complaint be self explanatory, or should we assume
75 that a series of complaints is being produced? case 0: Isolated
76 self explanatory message. case 1: First message of a series that
77 must start off with explanation. case 2: Subsequent message of a
78 series that needs no explanation (the user already knows we have
79 a problem so we can just state our piece). */
82 /* The explanatory messages that should accompany the complaint.
83 NOTE: cagney/2002-08-14: In a desperate attempt at being vaguely
84 i18n friendly, this is an array of two messages. When present,
85 the PRE and POST EXPLANATION[SERIES] are used to wrap the
87 const struct explanation *explanation;
90 static struct complain complaint_sentinel;
92 /* The symbol table complaint table. */
94 static struct explanation symfile_explanations[] = {
95 { "During symbol reading, ", "." },
96 { "During symbol reading...", "..."},
102 static struct complaints symfile_complaint_book = {
107 struct complaints *symfile_complaints = &symfile_complaint_book;
109 /* Wrapper function to, on-demand, fill in a complaints object. */
111 static struct complaints *
112 get_complaints (struct complaints **c)
116 (*c) = XMALLOC (struct complaints);
117 (*c)->root = &complaint_sentinel;
118 (*c)->series = ISOLATED_MESSAGE;
119 (*c)->explanation = NULL;
123 static struct complain * ATTRIBUTE_PRINTF (4, 0)
124 find_complaint (struct complaints *complaints, const char *file,
125 int line, const char *fmt)
127 struct complain *complaint;
129 /* Find the complaint in the table. A more efficient search
130 algorithm (based on hash table or something) could be used. But
131 that can wait until someone shows evidence that this lookup is
132 a real bottle neck. */
133 for (complaint = complaints->root;
135 complaint = complaint->next)
137 if (complaint->fmt == fmt
138 && complaint->file == file
139 && complaint->line == line)
143 /* Oops not seen before, fill in a new complaint. */
144 complaint = XMALLOC (struct complain);
145 complaint->fmt = fmt;
146 complaint->file = file;
147 complaint->line = line;
148 complaint->counter = 0;
149 complaint->next = NULL;
151 /* File it, return it. */
152 complaint->next = complaints->root;
153 complaints->root = complaint;
158 /* How many complaints about a particular thing should be printed
159 before we stop whining about it? Default is no whining at all,
160 since so many systems have ill-constructed symbol files. */
162 static int stop_whining = 0;
164 /* Print a complaint, and link the complaint block into a chain for
167 static void ATTRIBUTE_PRINTF (4, 0)
168 vcomplaint (struct complaints **c, const char *file,
169 int line, const char *fmt,
172 struct complaints *complaints = get_complaints (c);
173 struct complain *complaint = find_complaint (complaints, file,
175 enum complaint_series series;
177 gdb_assert (complaints != NULL);
179 complaint->counter++;
180 if (complaint->counter > stop_whining)
184 series = SUBSEQUENT_MESSAGE;
186 series = complaints->series;
188 if (complaint->file != NULL)
189 internal_vwarning (complaint->file, complaint->line,
190 complaint->fmt, args);
191 else if (deprecated_warning_hook)
192 (*deprecated_warning_hook) (complaint->fmt, args);
195 if (complaints->explanation == NULL)
196 /* A [v]warning() call always appends a newline. */
197 vwarning (complaint->fmt, args);
201 struct cleanup *cleanups;
202 msg = xstrvprintf (complaint->fmt, args);
203 cleanups = make_cleanup (xfree, msg);
205 if (series != SUBSEQUENT_MESSAGE)
208 fprintf_filtered (gdb_stderr, "%s%s%s",
209 complaints->explanation[series].prefix, msg,
210 complaints->explanation[series].postfix);
211 /* Force a line-break after any isolated message. For the
212 other cases, clear_complaints() takes care of any missing
213 trailing newline, the wrap_here() is just a hint. */
214 if (series == ISOLATED_MESSAGE)
215 /* It would be really nice to use begin_line() here.
216 Unfortunately that function doesn't track GDB_STDERR and
217 consequently will sometimes supress a line when it
219 fputs_filtered ("\n", gdb_stderr);
222 do_cleanups (cleanups);
228 case ISOLATED_MESSAGE:
231 complaints->series = SUBSEQUENT_MESSAGE;
233 case SUBSEQUENT_MESSAGE:
234 case SHORT_FIRST_MESSAGE:
235 complaints->series = SUBSEQUENT_MESSAGE;
239 /* If GDB dumps core, we'd like to see the complaints first.
240 Presumably GDB will not be sending so many complaints that this
241 becomes a performance hog. */
243 gdb_flush (gdb_stderr);
247 complaint (struct complaints **complaints, const char *fmt, ...)
251 va_start (args, fmt);
252 vcomplaint (complaints, NULL/*file*/, 0/*line*/, fmt, args);
257 internal_complaint (struct complaints **complaints, const char *file,
258 int line, const char *fmt, ...)
261 va_start (args, fmt);
262 vcomplaint (complaints, file, line, fmt, args);
266 /* Clear out / initialize all complaint counters that have ever been
267 incremented. If LESS_VERBOSE is 1, be less verbose about
268 successive complaints, since the messages are appearing all
269 together during a command that is reporting a contiguous block of
270 complaints (rather than being interleaved with other messages). If
271 noisy is 1, we are in a noisy command, and our caller will print
272 enough context for the user to figure it out. */
275 clear_complaints (struct complaints **c, int less_verbose, int noisy)
277 struct complaints *complaints = get_complaints (c);
280 for (p = complaints->root; p != NULL; p = p->next)
285 switch (complaints->series)
288 /* Haven't yet printed anything. */
290 case SHORT_FIRST_MESSAGE:
291 /* Haven't yet printed anything. */
293 case ISOLATED_MESSAGE:
294 /* The code above, always forces a line-break. No need to do it
297 case SUBSEQUENT_MESSAGE:
298 /* It would be really nice to use begin_line() here.
299 Unfortunately that function doesn't track GDB_STDERR and
300 consequently will sometimes supress a line when it
302 fputs_unfiltered ("\n", gdb_stderr);
305 internal_error (__FILE__, __LINE__, _("bad switch"));
309 complaints->series = ISOLATED_MESSAGE;
311 complaints->series = FIRST_MESSAGE;
313 complaints->series = SHORT_FIRST_MESSAGE;
317 complaints_show_value (struct ui_file *file, int from_tty,
318 struct cmd_list_element *cmd, const char *value)
320 fprintf_filtered (file, _("Max number of complaints about incorrect"
321 " symbols is %s.\n"),
326 _initialize_complaints (void)
328 add_setshow_zinteger_cmd ("complaints", class_support,
330 Set max number of complaints about incorrect symbols."), _("\
331 Show max number of complaints about incorrect symbols."), NULL,
332 NULL, complaints_show_value,
333 &setlist, &showlist);