1 /* Support for complaint handling during symbol reading in GDB.
3 Copyright (C) 1990-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
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
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "complaints.h"
22 #include "gdb_assert.h"
26 extern void _initialize_complaints (void);
28 /* Should each complaint message be self explanatory, or should we
29 assume that a series of complaints is being produced? */
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. */
38 /* First message of a series, includes an explanation. */
40 /* First message of a series, but does not need to include any sort
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
49 /* Structure to manage complaints about symbol file contents. */
57 struct complain *next;
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. */
71 struct complain *root;
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). */
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,
84 the PRE and POST EXPLANATION[SERIES] are used to wrap the
86 const struct explanation *explanation;
89 static struct complain complaint_sentinel;
91 /* The symbol table complaint table. */
93 static struct explanation symfile_explanations[] = {
94 { "During symbol reading, ", "." },
95 { "During symbol reading...", "..."},
101 static struct complaints symfile_complaint_book = {
106 struct complaints *symfile_complaints = &symfile_complaint_book;
108 /* Wrapper function to, on-demand, fill in a complaints object. */
110 static struct complaints *
111 get_complaints (struct complaints **c)
115 (*c) = XNEW (struct complaints);
116 (*c)->root = &complaint_sentinel;
117 (*c)->series = ISOLATED_MESSAGE;
118 (*c)->explanation = NULL;
122 static struct complain * ATTRIBUTE_PRINTF (4, 0)
123 find_complaint (struct complaints *complaints, const char *file,
124 int line, const char *fmt)
126 struct complain *complaint;
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;
134 complaint = complaint->next)
136 if (complaint->fmt == fmt
137 && complaint->file == file
138 && complaint->line == line)
142 /* Oops not seen before, fill in a new complaint. */
143 complaint = XNEW (struct complain);
144 complaint->fmt = fmt;
145 complaint->file = file;
146 complaint->line = line;
147 complaint->counter = 0;
148 complaint->next = NULL;
150 /* File it, return it. */
151 complaint->next = complaints->root;
152 complaints->root = complaint;
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. */
161 static int stop_whining = 0;
163 /* Print a complaint, and link the complaint block into a chain for
166 static void ATTRIBUTE_PRINTF (4, 0)
167 vcomplaint (struct complaints **c, const char *file,
168 int line, const char *fmt,
171 struct complaints *complaints = get_complaints (c);
172 struct complain *complaint = find_complaint (complaints, file,
174 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,
189 complaint->fmt, args);
190 else if (deprecated_warning_hook)
191 (*deprecated_warning_hook) (complaint->fmt, args);
194 if (complaints->explanation == NULL)
195 /* A [v]warning() call always appends a newline. */
196 vwarning (complaint->fmt, args);
200 struct cleanup *cleanups;
201 msg = xstrvprintf (complaint->fmt, args);
202 cleanups = make_cleanup (xfree, msg);
204 if (series != SUBSEQUENT_MESSAGE)
207 fprintf_filtered (gdb_stderr, "%s%s%s",
208 complaints->explanation[series].prefix, msg,
209 complaints->explanation[series].postfix);
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.
215 Unfortunately that function doesn't track GDB_STDERR and
216 consequently will sometimes supress a line when it
218 fputs_filtered ("\n", gdb_stderr);
221 do_cleanups (cleanups);
227 case ISOLATED_MESSAGE:
230 complaints->series = SUBSEQUENT_MESSAGE;
232 case SUBSEQUENT_MESSAGE:
233 case SHORT_FIRST_MESSAGE:
234 complaints->series = SUBSEQUENT_MESSAGE;
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. */
242 gdb_flush (gdb_stderr);
246 complaint (struct complaints **complaints, const char *fmt, ...)
250 va_start (args, fmt);
251 vcomplaint (complaints, NULL/*file*/, 0/*line*/, fmt, args);
256 internal_complaint (struct complaints **complaints, const char *file,
257 int line, const char *fmt, ...)
260 va_start (args, fmt);
261 vcomplaint (complaints, file, line, fmt, args);
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. */
274 clear_complaints (struct complaints **c, int less_verbose, int noisy)
276 struct complaints *complaints = get_complaints (c);
279 for (p = complaints->root; p != NULL; p = p->next)
284 switch (complaints->series)
287 /* Haven't yet printed anything. */
289 case SHORT_FIRST_MESSAGE:
290 /* Haven't yet printed anything. */
292 case ISOLATED_MESSAGE:
293 /* The code above, always forces a line-break. No need to do it
296 case SUBSEQUENT_MESSAGE:
297 /* It would be really nice to use begin_line() here.
298 Unfortunately that function doesn't track GDB_STDERR and
299 consequently will sometimes supress a line when it
301 fputs_unfiltered ("\n", gdb_stderr);
304 internal_error (__FILE__, __LINE__, _("bad switch"));
308 complaints->series = ISOLATED_MESSAGE;
310 complaints->series = FIRST_MESSAGE;
312 complaints->series = SHORT_FIRST_MESSAGE;
316 complaints_show_value (struct ui_file *file, int from_tty,
317 struct cmd_list_element *cmd, const char *value)
319 fprintf_filtered (file, _("Max number of complaints about incorrect"
320 " symbols is %s.\n"),
325 _initialize_complaints (void)
327 add_setshow_zinteger_cmd ("complaints", class_support,
329 Set max number of complaints about incorrect symbols."), _("\
330 Show max number of complaints about incorrect symbols."), NULL,
331 NULL, complaints_show_value,
332 &setlist, &showlist);