1 /* TID parsing for GDB, the GNU debugger.
3 Copyright (C) 2015-2016 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 "tid-parse.h"
23 #include "gdbthread.h"
26 /* See tid-parse.h. */
28 void ATTRIBUTE_NORETURN
29 invalid_thread_id_error (const char *string
)
31 error (_("Invalid thread ID: %s"), string
);
34 /* Wrapper for get_number_trailer that throws an error if we get back
35 a negative number. We'll see a negative value if the number is
36 stored in a negative convenience variable (e.g., $minus_one = -1).
37 STRING is the parser string to be used in the error message if we
38 do get back a negative number. */
41 get_positive_number_trailer (const char **pp
, int trailer
, const char *string
)
45 num
= get_number_trailer (pp
, trailer
);
47 error (_("negative value: %s"), string
);
51 /* See tid-parse.h. */
54 parse_thread_id (const char *tidstr
, const char **end
)
56 const char *number
= tidstr
;
58 struct thread_info
*tp
;
61 int explicit_inf_id
= 0;
63 dot
= strchr (number
, '.');
67 /* Parse number to the left of the dot. */
71 inf_num
= get_positive_number_trailer (&p1
, '.', number
);
73 invalid_thread_id_error (number
);
75 inf
= find_inferior_id (inf_num
);
77 error (_("No inferior number '%d'"), inf_num
);
84 inf
= current_inferior ();
89 thr_num
= get_positive_number_trailer (&p1
, 0, number
);
91 invalid_thread_id_error (number
);
95 if (ptid_get_pid (tp
->ptid
) == inf
->pid
96 && tp
->per_inf_num
== thr_num
)
102 if (show_inferior_qualified_tids () || explicit_inf_id
)
103 error (_("Unknown thread %d.%d."), inf
->num
, thr_num
);
105 error (_("Unknown thread %d."), thr_num
);
114 /* See tid-parse.h. */
117 tid_range_parser_init (struct tid_range_parser
*parser
, const char *tidlist
,
118 int default_inferior
)
120 parser
->state
= TID_RANGE_STATE_INFERIOR
;
121 parser
->string
= tidlist
;
123 parser
->qualified
= 0;
124 parser
->default_inferior
= default_inferior
;
127 /* See tid-parse.h. */
130 tid_range_parser_finished (struct tid_range_parser
*parser
)
132 switch (parser
->state
)
134 case TID_RANGE_STATE_INFERIOR
:
135 return *parser
->string
== '\0';
136 case TID_RANGE_STATE_THREAD_RANGE
:
137 return parser
->range_parser
.finished
;
140 gdb_assert_not_reached (_("unhandled state"));
143 /* See tid-parse.h. */
146 tid_range_parser_string (struct tid_range_parser
*parser
)
148 switch (parser
->state
)
150 case TID_RANGE_STATE_INFERIOR
:
151 return parser
->string
;
152 case TID_RANGE_STATE_THREAD_RANGE
:
153 return parser
->range_parser
.string
;
156 gdb_assert_not_reached (_("unhandled state"));
159 /* See tid-parse.h. */
162 tid_range_parser_skip (struct tid_range_parser
*parser
)
164 gdb_assert ((parser
->state
== TID_RANGE_STATE_THREAD_RANGE
)
165 && parser
->range_parser
.in_range
);
167 tid_range_parser_init (parser
, parser
->range_parser
.end_ptr
,
168 parser
->default_inferior
);
171 /* See tid-parse.h. */
174 tid_range_parser_qualified (struct tid_range_parser
*parser
)
176 return parser
->qualified
;
179 /* Helper for tid_range_parser_get_tid and
180 tid_range_parser_get_tid_range. Return the next range if THR_END
181 is non-NULL, return a single thread ID otherwise. */
184 get_tid_or_range (struct tid_range_parser
*parser
, int *inf_num
,
185 int *thr_start
, int *thr_end
)
187 if (parser
->state
== TID_RANGE_STATE_INFERIOR
)
192 space
= skip_to_space (parser
->string
);
195 while (p
< space
&& *p
!= '.')
201 /* Parse number to the left of the dot. */
204 = get_positive_number_trailer (&p
, '.', parser
->string
);
205 if (parser
->inf_num
== 0)
208 parser
->qualified
= 1;
216 parser
->inf_num
= parser
->default_inferior
;
217 parser
->qualified
= 0;
221 init_number_or_range (&parser
->range_parser
, p
);
222 parser
->state
= TID_RANGE_STATE_THREAD_RANGE
;
225 *inf_num
= parser
->inf_num
;
226 *thr_start
= get_number_or_range (&parser
->range_parser
);
228 error (_("negative value: %s"), parser
->string
);
231 parser
->state
= TID_RANGE_STATE_INFERIOR
;
235 /* If we successfully parsed a thread number or finished parsing a
236 thread range, switch back to assuming the next TID is
237 inferior-qualified. */
238 if (parser
->range_parser
.end_ptr
== NULL
239 || parser
->range_parser
.string
== parser
->range_parser
.end_ptr
)
241 parser
->state
= TID_RANGE_STATE_INFERIOR
;
242 parser
->string
= parser
->range_parser
.string
;
245 *thr_end
= *thr_start
;
248 /* If we're midway through a range, and the caller wants the end
249 value, return it and skip to the end of the range. */
250 if (thr_end
!= NULL
&& parser
->state
== TID_RANGE_STATE_THREAD_RANGE
)
252 *thr_end
= parser
->range_parser
.end_value
;
253 tid_range_parser_skip (parser
);
256 return (*inf_num
!= 0 && *thr_start
!= 0);
259 /* See tid-parse.h. */
262 tid_range_parser_get_tid_range (struct tid_range_parser
*parser
, int *inf_num
,
263 int *thr_start
, int *thr_end
)
265 gdb_assert (inf_num
!= NULL
&& thr_start
!= NULL
&& thr_end
!= NULL
);
267 return get_tid_or_range (parser
, inf_num
, thr_start
, thr_end
);
270 /* See tid-parse.h. */
273 tid_range_parser_get_tid (struct tid_range_parser
*parser
,
274 int *inf_num
, int *thr_num
)
276 gdb_assert (inf_num
!= NULL
&& thr_num
!= NULL
);
278 return get_tid_or_range (parser
, inf_num
, thr_num
, NULL
);
281 /* See tid-parse.h. */
284 tid_is_in_list (const char *list
, int default_inferior
,
285 int inf_num
, int thr_num
)
287 struct tid_range_parser parser
;
289 if (list
== NULL
|| *list
== '\0')
292 tid_range_parser_init (&parser
, list
, default_inferior
);
293 while (!tid_range_parser_finished (&parser
))
295 int tmp_inf
, tmp_thr_start
, tmp_thr_end
;
297 if (!tid_range_parser_get_tid_range (&parser
, &tmp_inf
,
298 &tmp_thr_start
, &tmp_thr_end
))
299 invalid_thread_id_error (parser
.string
);
300 if (tmp_inf
== inf_num
301 && tmp_thr_start
<= thr_num
&& thr_num
<= tmp_thr_end
)