Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Multi-process/thread control for GDB, the GNU debugger. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
9b254dd1 | 4 | 2000, 2001, 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc. |
8926118c | 5 | |
b6ba6518 | 6 | Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA. |
c906108c | 7 | |
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 13 | (at your option) any later version. |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b | 20 | You should have received a copy of the GNU General Public License |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
26 | #include "inferior.h" | |
27 | #include "environ.h" | |
28 | #include "value.h" | |
29 | #include "target.h" | |
30 | #include "gdbthread.h" | |
60250e8b | 31 | #include "exceptions.h" |
c906108c SS |
32 | #include "command.h" |
33 | #include "gdbcmd.h" | |
4e052eda | 34 | #include "regcache.h" |
5b7f31a4 | 35 | #include "gdb.h" |
b66d6d2e | 36 | #include "gdb_string.h" |
c906108c SS |
37 | |
38 | #include <ctype.h> | |
39 | #include <sys/types.h> | |
40 | #include <signal.h> | |
8b93c638 | 41 | #include "ui-out.h" |
c906108c | 42 | |
0d06e24b | 43 | /* Definition of struct thread_info exported to gdbthread.h */ |
c906108c SS |
44 | |
45 | /* Prototypes for exported functions. */ | |
46 | ||
a14ed312 | 47 | void _initialize_thread (void); |
c906108c SS |
48 | |
49 | /* Prototypes for local functions. */ | |
50 | ||
c906108c SS |
51 | static struct thread_info *thread_list = NULL; |
52 | static int highest_thread_num; | |
53 | ||
a14ed312 | 54 | static struct thread_info *find_thread_id (int num); |
c906108c | 55 | |
a14ed312 KB |
56 | static void thread_command (char *tidstr, int from_tty); |
57 | static void thread_apply_all_command (char *, int); | |
58 | static int thread_alive (struct thread_info *); | |
59 | static void info_threads_command (char *, int); | |
60 | static void thread_apply_command (char *, int); | |
39f77062 | 61 | static void restore_current_thread (ptid_t); |
a14ed312 | 62 | static void prune_threads (void); |
99b3d574 DP |
63 | static struct cleanup *make_cleanup_restore_current_thread (ptid_t, |
64 | struct frame_id); | |
c906108c | 65 | |
8601f500 MS |
66 | void |
67 | delete_step_resume_breakpoint (void *arg) | |
68 | { | |
69 | struct breakpoint **breakpointp = (struct breakpoint **) arg; | |
70 | struct thread_info *tp; | |
71 | ||
72 | if (*breakpointp != NULL) | |
73 | { | |
74 | delete_breakpoint (*breakpointp); | |
75 | for (tp = thread_list; tp; tp = tp->next) | |
76 | if (tp->step_resume_breakpoint == *breakpointp) | |
77 | tp->step_resume_breakpoint = NULL; | |
78 | ||
79 | *breakpointp = NULL; | |
80 | } | |
81 | } | |
82 | ||
7c952b6d ND |
83 | static void |
84 | free_thread (struct thread_info *tp) | |
85 | { | |
86 | /* NOTE: this will take care of any left-over step_resume breakpoints, | |
4d8453a5 DJ |
87 | but not any user-specified thread-specific breakpoints. We can not |
88 | delete the breakpoint straight-off, because the inferior might not | |
89 | be stopped at the moment. */ | |
7c952b6d | 90 | if (tp->step_resume_breakpoint) |
4d8453a5 | 91 | tp->step_resume_breakpoint->disposition = disp_del_at_next_stop; |
7c952b6d ND |
92 | |
93 | /* FIXME: do I ever need to call the back-end to give it a | |
94 | chance at this private data before deleting the thread? */ | |
95 | if (tp->private) | |
b8c9b27d | 96 | xfree (tp->private); |
7c952b6d | 97 | |
b8c9b27d | 98 | xfree (tp); |
7c952b6d ND |
99 | } |
100 | ||
c906108c | 101 | void |
fba45db2 | 102 | init_thread_list (void) |
c906108c SS |
103 | { |
104 | struct thread_info *tp, *tpnext; | |
105 | ||
7c952b6d | 106 | highest_thread_num = 0; |
c906108c SS |
107 | if (!thread_list) |
108 | return; | |
109 | ||
110 | for (tp = thread_list; tp; tp = tpnext) | |
111 | { | |
112 | tpnext = tp->next; | |
7c952b6d | 113 | free_thread (tp); |
c906108c SS |
114 | } |
115 | ||
116 | thread_list = NULL; | |
c906108c SS |
117 | } |
118 | ||
0d06e24b | 119 | struct thread_info * |
93815fbf | 120 | add_thread_silent (ptid_t ptid) |
c906108c SS |
121 | { |
122 | struct thread_info *tp; | |
123 | ||
6c0d3f6a MS |
124 | tp = (struct thread_info *) xmalloc (sizeof (*tp)); |
125 | memset (tp, 0, sizeof (*tp)); | |
39f77062 | 126 | tp->ptid = ptid; |
c906108c | 127 | tp->num = ++highest_thread_num; |
c906108c SS |
128 | tp->next = thread_list; |
129 | thread_list = tp; | |
0d06e24b | 130 | return tp; |
c906108c SS |
131 | } |
132 | ||
93815fbf VP |
133 | struct thread_info * |
134 | add_thread (ptid_t ptid) | |
135 | { | |
136 | struct thread_info *result = add_thread_silent (ptid); | |
137 | ||
138 | if (print_thread_events) | |
139 | printf_filtered (_("[New %s]\n"), target_pid_to_str (ptid)); | |
140 | ||
141 | return result; | |
142 | } | |
143 | ||
c906108c | 144 | void |
39f77062 | 145 | delete_thread (ptid_t ptid) |
c906108c SS |
146 | { |
147 | struct thread_info *tp, *tpprev; | |
148 | ||
149 | tpprev = NULL; | |
150 | ||
151 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) | |
39f77062 | 152 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
153 | break; |
154 | ||
155 | if (!tp) | |
156 | return; | |
157 | ||
158 | if (tpprev) | |
159 | tpprev->next = tp->next; | |
160 | else | |
161 | thread_list = tp->next; | |
162 | ||
7c952b6d | 163 | free_thread (tp); |
c906108c SS |
164 | } |
165 | ||
166 | static struct thread_info * | |
fba45db2 | 167 | find_thread_id (int num) |
c906108c SS |
168 | { |
169 | struct thread_info *tp; | |
170 | ||
171 | for (tp = thread_list; tp; tp = tp->next) | |
172 | if (tp->num == num) | |
173 | return tp; | |
174 | ||
175 | return NULL; | |
176 | } | |
177 | ||
39f77062 | 178 | /* Find a thread_info by matching PTID. */ |
0d06e24b | 179 | struct thread_info * |
39f77062 | 180 | find_thread_pid (ptid_t ptid) |
0d06e24b JM |
181 | { |
182 | struct thread_info *tp; | |
183 | ||
184 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 185 | if (ptid_equal (tp->ptid, ptid)) |
0d06e24b JM |
186 | return tp; |
187 | ||
188 | return NULL; | |
189 | } | |
190 | ||
191 | /* | |
192 | * Thread iterator function. | |
193 | * | |
194 | * Calls a callback function once for each thread, so long as | |
195 | * the callback function returns false. If the callback function | |
196 | * returns true, the iteration will end and the current thread | |
197 | * will be returned. This can be useful for implementing a | |
198 | * search for a thread with arbitrary attributes, or for applying | |
199 | * some operation to every thread. | |
200 | * | |
201 | * FIXME: some of the existing functionality, such as | |
202 | * "Thread apply all", might be rewritten using this functionality. | |
203 | */ | |
204 | ||
205 | struct thread_info * | |
fd118b61 KB |
206 | iterate_over_threads (int (*callback) (struct thread_info *, void *), |
207 | void *data) | |
0d06e24b JM |
208 | { |
209 | struct thread_info *tp; | |
210 | ||
211 | for (tp = thread_list; tp; tp = tp->next) | |
212 | if ((*callback) (tp, data)) | |
213 | return tp; | |
214 | ||
215 | return NULL; | |
216 | } | |
217 | ||
c906108c | 218 | int |
fba45db2 | 219 | valid_thread_id (int num) |
c906108c SS |
220 | { |
221 | struct thread_info *tp; | |
222 | ||
223 | for (tp = thread_list; tp; tp = tp->next) | |
224 | if (tp->num == num) | |
225 | return 1; | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
230 | int | |
39f77062 | 231 | pid_to_thread_id (ptid_t ptid) |
c906108c SS |
232 | { |
233 | struct thread_info *tp; | |
234 | ||
235 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 236 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
237 | return tp->num; |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
39f77062 | 242 | ptid_t |
fba45db2 | 243 | thread_id_to_pid (int num) |
c906108c SS |
244 | { |
245 | struct thread_info *thread = find_thread_id (num); | |
246 | if (thread) | |
39f77062 | 247 | return thread->ptid; |
c906108c | 248 | else |
39f77062 | 249 | return pid_to_ptid (-1); |
c906108c SS |
250 | } |
251 | ||
252 | int | |
39f77062 | 253 | in_thread_list (ptid_t ptid) |
c906108c SS |
254 | { |
255 | struct thread_info *tp; | |
256 | ||
257 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 258 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
259 | return 1; |
260 | ||
261 | return 0; /* Never heard of 'im */ | |
262 | } | |
8926118c | 263 | |
8b93c638 JM |
264 | /* Print a list of thread ids currently known, and the total number of |
265 | threads. To be used from within catch_errors. */ | |
6949171e JJ |
266 | static int |
267 | do_captured_list_thread_ids (struct ui_out *uiout, void *arg) | |
8b93c638 JM |
268 | { |
269 | struct thread_info *tp; | |
270 | int num = 0; | |
3b31d625 | 271 | struct cleanup *cleanup_chain; |
8b93c638 | 272 | |
7990a578 EZ |
273 | prune_threads (); |
274 | target_find_new_threads (); | |
275 | ||
3b31d625 | 276 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "thread-ids"); |
8b93c638 JM |
277 | |
278 | for (tp = thread_list; tp; tp = tp->next) | |
279 | { | |
280 | num++; | |
281 | ui_out_field_int (uiout, "thread-id", tp->num); | |
282 | } | |
283 | ||
3b31d625 | 284 | do_cleanups (cleanup_chain); |
8b93c638 JM |
285 | ui_out_field_int (uiout, "number-of-threads", num); |
286 | return GDB_RC_OK; | |
287 | } | |
288 | ||
289 | /* Official gdblib interface function to get a list of thread ids and | |
290 | the total number. */ | |
291 | enum gdb_rc | |
ce43223b | 292 | gdb_list_thread_ids (struct ui_out *uiout, char **error_message) |
8b93c638 | 293 | { |
b0b13bb4 DJ |
294 | if (catch_exceptions_with_msg (uiout, do_captured_list_thread_ids, NULL, |
295 | error_message, RETURN_MASK_ALL) < 0) | |
296 | return GDB_RC_FAIL; | |
297 | return GDB_RC_OK; | |
8b93c638 | 298 | } |
c906108c SS |
299 | |
300 | /* Load infrun state for the thread PID. */ | |
301 | ||
c5aa993b | 302 | void |
6949171e JJ |
303 | load_infrun_state (ptid_t ptid, |
304 | CORE_ADDR *prev_pc, | |
6c0d3f6a | 305 | int *trap_expected, |
fba45db2 | 306 | struct breakpoint **step_resume_breakpoint, |
6949171e | 307 | CORE_ADDR *step_range_start, |
6c0d3f6a | 308 | CORE_ADDR *step_range_end, |
6949171e | 309 | struct frame_id *step_frame_id, |
6c0d3f6a | 310 | int *handling_longjmp, |
ca67fcb8 | 311 | int *stepping_over_breakpoint, |
6c0d3f6a | 312 | int *stepping_through_solib_after_catch, |
fba45db2 | 313 | bpstat *stepping_through_solib_catchpoints, |
6949171e | 314 | int *current_line, |
f2c9ca08 | 315 | struct symtab **current_symtab) |
c906108c SS |
316 | { |
317 | struct thread_info *tp; | |
318 | ||
319 | /* If we can't find the thread, then we're debugging a single threaded | |
320 | process. No need to do anything in that case. */ | |
39f77062 | 321 | tp = find_thread_id (pid_to_thread_id (ptid)); |
c906108c SS |
322 | if (tp == NULL) |
323 | return; | |
324 | ||
325 | *prev_pc = tp->prev_pc; | |
6c0d3f6a | 326 | *trap_expected = tp->trap_expected; |
c906108c SS |
327 | *step_resume_breakpoint = tp->step_resume_breakpoint; |
328 | *step_range_start = tp->step_range_start; | |
329 | *step_range_end = tp->step_range_end; | |
aa0cd9c1 | 330 | *step_frame_id = tp->step_frame_id; |
c906108c | 331 | *handling_longjmp = tp->handling_longjmp; |
ca67fcb8 | 332 | *stepping_over_breakpoint = tp->stepping_over_breakpoint; |
6949171e JJ |
333 | *stepping_through_solib_after_catch = |
334 | tp->stepping_through_solib_after_catch; | |
335 | *stepping_through_solib_catchpoints = | |
336 | tp->stepping_through_solib_catchpoints; | |
6c0d3f6a MS |
337 | *current_line = tp->current_line; |
338 | *current_symtab = tp->current_symtab; | |
c906108c SS |
339 | } |
340 | ||
341 | /* Save infrun state for the thread PID. */ | |
342 | ||
c5aa993b | 343 | void |
6949171e JJ |
344 | save_infrun_state (ptid_t ptid, |
345 | CORE_ADDR prev_pc, | |
6c0d3f6a | 346 | int trap_expected, |
fba45db2 | 347 | struct breakpoint *step_resume_breakpoint, |
6949171e | 348 | CORE_ADDR step_range_start, |
6c0d3f6a | 349 | CORE_ADDR step_range_end, |
6949171e | 350 | const struct frame_id *step_frame_id, |
6c0d3f6a | 351 | int handling_longjmp, |
ca67fcb8 | 352 | int stepping_over_breakpoint, |
6c0d3f6a | 353 | int stepping_through_solib_after_catch, |
fba45db2 | 354 | bpstat stepping_through_solib_catchpoints, |
6c0d3f6a | 355 | int current_line, |
f2c9ca08 | 356 | struct symtab *current_symtab) |
c906108c SS |
357 | { |
358 | struct thread_info *tp; | |
359 | ||
360 | /* If we can't find the thread, then we're debugging a single-threaded | |
361 | process. Nothing to do in that case. */ | |
39f77062 | 362 | tp = find_thread_id (pid_to_thread_id (ptid)); |
c906108c SS |
363 | if (tp == NULL) |
364 | return; | |
365 | ||
366 | tp->prev_pc = prev_pc; | |
6c0d3f6a | 367 | tp->trap_expected = trap_expected; |
c906108c SS |
368 | tp->step_resume_breakpoint = step_resume_breakpoint; |
369 | tp->step_range_start = step_range_start; | |
370 | tp->step_range_end = step_range_end; | |
aa0cd9c1 | 371 | tp->step_frame_id = (*step_frame_id); |
c906108c | 372 | tp->handling_longjmp = handling_longjmp; |
ca67fcb8 | 373 | tp->stepping_over_breakpoint = stepping_over_breakpoint; |
c906108c SS |
374 | tp->stepping_through_solib_after_catch = stepping_through_solib_after_catch; |
375 | tp->stepping_through_solib_catchpoints = stepping_through_solib_catchpoints; | |
6c0d3f6a MS |
376 | tp->current_line = current_line; |
377 | tp->current_symtab = current_symtab; | |
c906108c SS |
378 | } |
379 | ||
380 | /* Return true if TP is an active thread. */ | |
381 | static int | |
fba45db2 | 382 | thread_alive (struct thread_info *tp) |
c906108c | 383 | { |
39f77062 | 384 | if (PIDGET (tp->ptid) == -1) |
c906108c | 385 | return 0; |
39f77062 | 386 | if (!target_thread_alive (tp->ptid)) |
c906108c | 387 | { |
39f77062 | 388 | tp->ptid = pid_to_ptid (-1); /* Mark it as dead */ |
c906108c SS |
389 | return 0; |
390 | } | |
391 | return 1; | |
392 | } | |
393 | ||
394 | static void | |
fba45db2 | 395 | prune_threads (void) |
c906108c | 396 | { |
d4f3574e | 397 | struct thread_info *tp, *next; |
c906108c | 398 | |
c906108c SS |
399 | for (tp = thread_list; tp; tp = next) |
400 | { | |
401 | next = tp->next; | |
402 | if (!thread_alive (tp)) | |
39f77062 | 403 | delete_thread (tp->ptid); |
c906108c SS |
404 | } |
405 | } | |
406 | ||
407 | /* Print information about currently known threads | |
c5aa993b | 408 | |
c906108c SS |
409 | * Note: this has the drawback that it _really_ switches |
410 | * threads, which frees the frame cache. A no-side | |
411 | * effects info-threads command would be nicer. | |
412 | */ | |
413 | ||
414 | static void | |
fba45db2 | 415 | info_threads_command (char *arg, int from_tty) |
c906108c SS |
416 | { |
417 | struct thread_info *tp; | |
39f77062 | 418 | ptid_t current_ptid; |
c5aa993b | 419 | struct frame_info *cur_frame; |
99b3d574 DP |
420 | struct cleanup *old_chain; |
421 | struct frame_id saved_frame_id; | |
0d06e24b | 422 | char *extra_info; |
c906108c | 423 | |
99b3d574 DP |
424 | /* Backup current thread and selected frame. */ |
425 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
426 | old_chain = make_cleanup_restore_current_thread (inferior_ptid, saved_frame_id); | |
427 | ||
c906108c | 428 | prune_threads (); |
b83266a0 | 429 | target_find_new_threads (); |
39f77062 | 430 | current_ptid = inferior_ptid; |
c906108c SS |
431 | for (tp = thread_list; tp; tp = tp->next) |
432 | { | |
39f77062 | 433 | if (ptid_equal (tp->ptid, current_ptid)) |
c906108c SS |
434 | printf_filtered ("* "); |
435 | else | |
436 | printf_filtered (" "); | |
437 | ||
39f77062 | 438 | printf_filtered ("%d %s", tp->num, target_tid_to_str (tp->ptid)); |
0d06e24b JM |
439 | |
440 | extra_info = target_extra_thread_info (tp); | |
441 | if (extra_info) | |
442 | printf_filtered (" (%s)", extra_info); | |
443 | puts_filtered (" "); | |
99b3d574 | 444 | /* That switch put us at the top of the stack (leaf frame). */ |
39f77062 | 445 | switch_to_thread (tp->ptid); |
b04f3ab4 | 446 | print_stack_frame (get_selected_frame (NULL), 0, LOCATION); |
c906108c SS |
447 | } |
448 | ||
99b3d574 DP |
449 | /* Restores the current thread and the frame selected before |
450 | the "info threads" command. */ | |
451 | do_cleanups (old_chain); | |
c906108c | 452 | |
99b3d574 DP |
453 | /* If case we were not able to find the original frame, print the |
454 | new selected frame. */ | |
455 | if (frame_find_by_id (saved_frame_id) == NULL) | |
c906108c | 456 | { |
8a3fe4f8 | 457 | warning (_("Couldn't restore frame in current thread, at frame 0")); |
b04f3ab4 | 458 | print_stack_frame (get_selected_frame (NULL), 0, LOCATION); |
c906108c | 459 | } |
c906108c SS |
460 | } |
461 | ||
462 | /* Switch from one thread to another. */ | |
463 | ||
6a6b96b9 | 464 | void |
39f77062 | 465 | switch_to_thread (ptid_t ptid) |
c906108c | 466 | { |
39f77062 | 467 | if (ptid_equal (ptid, inferior_ptid)) |
c906108c SS |
468 | return; |
469 | ||
39f77062 | 470 | inferior_ptid = ptid; |
35f196d9 | 471 | reinit_frame_cache (); |
c906108c | 472 | registers_changed (); |
c5aa993b | 473 | stop_pc = read_pc (); |
c906108c SS |
474 | } |
475 | ||
476 | static void | |
39f77062 | 477 | restore_current_thread (ptid_t ptid) |
c906108c | 478 | { |
6949171e | 479 | if (!ptid_equal (ptid, inferior_ptid)) |
c906108c | 480 | { |
39f77062 | 481 | switch_to_thread (ptid); |
99b3d574 DP |
482 | } |
483 | } | |
484 | ||
485 | static void | |
486 | restore_selected_frame (struct frame_id a_frame_id) | |
487 | { | |
488 | struct frame_info *selected_frame_info = NULL; | |
489 | ||
490 | if (frame_id_eq (a_frame_id, null_frame_id)) | |
491 | return; | |
492 | ||
493 | if ((selected_frame_info = frame_find_by_id (a_frame_id)) != NULL) | |
494 | { | |
495 | select_frame (selected_frame_info); | |
c906108c SS |
496 | } |
497 | } | |
498 | ||
6ecce94d AC |
499 | struct current_thread_cleanup |
500 | { | |
39f77062 | 501 | ptid_t inferior_ptid; |
99b3d574 | 502 | struct frame_id selected_frame_id; |
6ecce94d AC |
503 | }; |
504 | ||
505 | static void | |
506 | do_restore_current_thread_cleanup (void *arg) | |
507 | { | |
508 | struct current_thread_cleanup *old = arg; | |
39f77062 | 509 | restore_current_thread (old->inferior_ptid); |
99b3d574 | 510 | restore_selected_frame (old->selected_frame_id); |
b8c9b27d | 511 | xfree (old); |
6ecce94d AC |
512 | } |
513 | ||
514 | static struct cleanup * | |
99b3d574 DP |
515 | make_cleanup_restore_current_thread (ptid_t inferior_ptid, |
516 | struct frame_id a_frame_id) | |
6ecce94d AC |
517 | { |
518 | struct current_thread_cleanup *old | |
519 | = xmalloc (sizeof (struct current_thread_cleanup)); | |
39f77062 | 520 | old->inferior_ptid = inferior_ptid; |
99b3d574 | 521 | old->selected_frame_id = a_frame_id; |
6ecce94d AC |
522 | return make_cleanup (do_restore_current_thread_cleanup, old); |
523 | } | |
524 | ||
c906108c SS |
525 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
526 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist | |
527 | of two numbers seperated by a hyphen. Examples: | |
528 | ||
c5aa993b JM |
529 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
530 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
531 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads | |
532 | */ | |
c906108c SS |
533 | |
534 | static void | |
fba45db2 | 535 | thread_apply_all_command (char *cmd, int from_tty) |
c906108c SS |
536 | { |
537 | struct thread_info *tp; | |
538 | struct cleanup *old_chain; | |
e35ce267 CF |
539 | struct cleanup *saved_cmd_cleanup_chain; |
540 | char *saved_cmd; | |
99b3d574 DP |
541 | struct frame_id saved_frame_id; |
542 | ptid_t current_ptid; | |
543 | int thread_has_changed = 0; | |
c906108c SS |
544 | |
545 | if (cmd == NULL || *cmd == '\000') | |
8a3fe4f8 | 546 | error (_("Please specify a command following the thread ID list")); |
99b3d574 DP |
547 | |
548 | current_ptid = inferior_ptid; | |
549 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
550 | old_chain = make_cleanup_restore_current_thread (inferior_ptid, saved_frame_id); | |
c906108c | 551 | |
e9d196c5 MS |
552 | /* It is safe to update the thread list now, before |
553 | traversing it for "thread apply all". MVS */ | |
554 | target_find_new_threads (); | |
555 | ||
e35ce267 CF |
556 | /* Save a copy of the command in case it is clobbered by |
557 | execute_command */ | |
5b616ba1 | 558 | saved_cmd = xstrdup (cmd); |
b8c9b27d | 559 | saved_cmd_cleanup_chain = make_cleanup (xfree, (void *) saved_cmd); |
c906108c SS |
560 | for (tp = thread_list; tp; tp = tp->next) |
561 | if (thread_alive (tp)) | |
562 | { | |
39f77062 | 563 | switch_to_thread (tp->ptid); |
a3f17187 | 564 | printf_filtered (_("\nThread %d (%s):\n"), |
6949171e | 565 | tp->num, target_tid_to_str (inferior_ptid)); |
c906108c | 566 | execute_command (cmd, from_tty); |
6949171e | 567 | strcpy (cmd, saved_cmd); /* Restore exact command used previously */ |
c906108c | 568 | } |
6ecce94d | 569 | |
99b3d574 DP |
570 | if (!ptid_equal (current_ptid, inferior_ptid)) |
571 | thread_has_changed = 1; | |
572 | ||
e35ce267 | 573 | do_cleanups (saved_cmd_cleanup_chain); |
6ecce94d | 574 | do_cleanups (old_chain); |
99b3d574 DP |
575 | /* Print stack frame only if we changed thread. */ |
576 | if (thread_has_changed) | |
577 | print_stack_frame (get_current_frame (), 1, SRC_LINE); | |
578 | ||
c906108c SS |
579 | } |
580 | ||
581 | static void | |
fba45db2 | 582 | thread_apply_command (char *tidlist, int from_tty) |
c906108c SS |
583 | { |
584 | char *cmd; | |
585 | char *p; | |
586 | struct cleanup *old_chain; | |
e35ce267 CF |
587 | struct cleanup *saved_cmd_cleanup_chain; |
588 | char *saved_cmd; | |
99b3d574 DP |
589 | struct frame_id saved_frame_id; |
590 | ptid_t current_ptid; | |
591 | int thread_has_changed = 0; | |
c906108c SS |
592 | |
593 | if (tidlist == NULL || *tidlist == '\000') | |
8a3fe4f8 | 594 | error (_("Please specify a thread ID list")); |
c906108c | 595 | |
c5aa993b | 596 | for (cmd = tidlist; *cmd != '\000' && !isalpha (*cmd); cmd++); |
c906108c SS |
597 | |
598 | if (*cmd == '\000') | |
8a3fe4f8 | 599 | error (_("Please specify a command following the thread ID list")); |
c906108c | 600 | |
99b3d574 DP |
601 | current_ptid = inferior_ptid; |
602 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
603 | old_chain = make_cleanup_restore_current_thread (inferior_ptid, saved_frame_id); | |
c906108c | 604 | |
e35ce267 CF |
605 | /* Save a copy of the command in case it is clobbered by |
606 | execute_command */ | |
5b616ba1 | 607 | saved_cmd = xstrdup (cmd); |
b8c9b27d | 608 | saved_cmd_cleanup_chain = make_cleanup (xfree, (void *) saved_cmd); |
c906108c SS |
609 | while (tidlist < cmd) |
610 | { | |
611 | struct thread_info *tp; | |
612 | int start, end; | |
613 | ||
614 | start = strtol (tidlist, &p, 10); | |
615 | if (p == tidlist) | |
8a3fe4f8 | 616 | error (_("Error parsing %s"), tidlist); |
c906108c SS |
617 | tidlist = p; |
618 | ||
619 | while (*tidlist == ' ' || *tidlist == '\t') | |
620 | tidlist++; | |
621 | ||
622 | if (*tidlist == '-') /* Got a range of IDs? */ | |
623 | { | |
c5aa993b | 624 | tidlist++; /* Skip the - */ |
c906108c SS |
625 | end = strtol (tidlist, &p, 10); |
626 | if (p == tidlist) | |
8a3fe4f8 | 627 | error (_("Error parsing %s"), tidlist); |
c906108c SS |
628 | tidlist = p; |
629 | ||
630 | while (*tidlist == ' ' || *tidlist == '\t') | |
631 | tidlist++; | |
632 | } | |
633 | else | |
634 | end = start; | |
635 | ||
636 | for (; start <= end; start++) | |
637 | { | |
638 | tp = find_thread_id (start); | |
639 | ||
640 | if (!tp) | |
8a3fe4f8 | 641 | warning (_("Unknown thread %d."), start); |
c906108c | 642 | else if (!thread_alive (tp)) |
8a3fe4f8 | 643 | warning (_("Thread %d has terminated."), start); |
c906108c SS |
644 | else |
645 | { | |
39f77062 | 646 | switch_to_thread (tp->ptid); |
a3f17187 | 647 | printf_filtered (_("\nThread %d (%s):\n"), tp->num, |
39f77062 | 648 | target_tid_to_str (inferior_ptid)); |
c906108c | 649 | execute_command (cmd, from_tty); |
e35ce267 | 650 | strcpy (cmd, saved_cmd); /* Restore exact command used previously */ |
c906108c SS |
651 | } |
652 | } | |
653 | } | |
6ecce94d | 654 | |
99b3d574 DP |
655 | if (!ptid_equal (current_ptid, inferior_ptid)) |
656 | thread_has_changed = 1; | |
657 | ||
e35ce267 | 658 | do_cleanups (saved_cmd_cleanup_chain); |
6ecce94d | 659 | do_cleanups (old_chain); |
99b3d574 DP |
660 | /* Print stack frame only if we changed thread. */ |
661 | if (thread_has_changed) | |
662 | print_stack_frame (get_current_frame (), 1, SRC_LINE); | |
c906108c SS |
663 | } |
664 | ||
665 | /* Switch to the specified thread. Will dispatch off to thread_apply_command | |
666 | if prefix of arg is `apply'. */ | |
667 | ||
668 | static void | |
fba45db2 | 669 | thread_command (char *tidstr, int from_tty) |
c906108c | 670 | { |
c906108c SS |
671 | if (!tidstr) |
672 | { | |
673 | /* Don't generate an error, just say which thread is current. */ | |
674 | if (target_has_stack) | |
a3f17187 | 675 | printf_filtered (_("[Current thread is %d (%s)]\n"), |
39f77062 | 676 | pid_to_thread_id (inferior_ptid), |
007d08bb | 677 | target_tid_to_str (inferior_ptid)); |
c906108c | 678 | else |
8a3fe4f8 | 679 | error (_("No stack.")); |
c906108c SS |
680 | return; |
681 | } | |
c5394b80 | 682 | |
ce43223b | 683 | gdb_thread_select (uiout, tidstr, NULL); |
c5394b80 JM |
684 | } |
685 | ||
93815fbf VP |
686 | /* Print notices when new threads are attached and detached. */ |
687 | int print_thread_events = 1; | |
688 | static void | |
689 | show_print_thread_events (struct ui_file *file, int from_tty, | |
690 | struct cmd_list_element *c, const char *value) | |
691 | { | |
692 | fprintf_filtered (file, _("\ | |
693 | Printing of thread events is %s.\n"), | |
694 | value); | |
695 | } | |
696 | ||
c5394b80 | 697 | static int |
6949171e | 698 | do_captured_thread_select (struct ui_out *uiout, void *tidstr) |
c5394b80 JM |
699 | { |
700 | int num; | |
701 | struct thread_info *tp; | |
702 | ||
81490ea1 | 703 | num = value_as_long (parse_and_eval (tidstr)); |
c906108c SS |
704 | |
705 | tp = find_thread_id (num); | |
706 | ||
8b93c638 | 707 | if (!tp) |
8a3fe4f8 | 708 | error (_("Thread ID %d not known."), num); |
c906108c SS |
709 | |
710 | if (!thread_alive (tp)) | |
8a3fe4f8 | 711 | error (_("Thread ID %d has terminated."), num); |
c906108c | 712 | |
39f77062 | 713 | switch_to_thread (tp->ptid); |
c906108c | 714 | |
8b93c638 | 715 | ui_out_text (uiout, "[Switching to thread "); |
39f77062 | 716 | ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_ptid)); |
8b93c638 | 717 | ui_out_text (uiout, " ("); |
39f77062 | 718 | ui_out_text (uiout, target_tid_to_str (inferior_ptid)); |
8b93c638 | 719 | ui_out_text (uiout, ")]"); |
c5394b80 | 720 | |
b04f3ab4 | 721 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c5394b80 JM |
722 | return GDB_RC_OK; |
723 | } | |
724 | ||
725 | enum gdb_rc | |
ce43223b | 726 | gdb_thread_select (struct ui_out *uiout, char *tidstr, char **error_message) |
c5394b80 | 727 | { |
b0b13bb4 DJ |
728 | if (catch_exceptions_with_msg (uiout, do_captured_thread_select, tidstr, |
729 | error_message, RETURN_MASK_ALL) < 0) | |
730 | return GDB_RC_FAIL; | |
731 | return GDB_RC_OK; | |
c906108c SS |
732 | } |
733 | ||
734 | /* Commands with a prefix of `thread'. */ | |
735 | struct cmd_list_element *thread_cmd_list = NULL; | |
736 | ||
737 | void | |
fba45db2 | 738 | _initialize_thread (void) |
c906108c SS |
739 | { |
740 | static struct cmd_list_element *thread_apply_list = NULL; | |
c906108c SS |
741 | |
742 | add_info ("threads", info_threads_command, | |
1bedd215 | 743 | _("IDs of currently known threads.")); |
c906108c | 744 | |
1bedd215 AC |
745 | add_prefix_cmd ("thread", class_run, thread_command, _("\ |
746 | Use this command to switch between threads.\n\ | |
747 | The new thread ID must be currently known."), | |
748 | &thread_cmd_list, "thread ", 1, &cmdlist); | |
c906108c SS |
749 | |
750 | add_prefix_cmd ("apply", class_run, thread_apply_command, | |
1bedd215 | 751 | _("Apply a command to a list of threads."), |
ad21ceb0 | 752 | &thread_apply_list, "thread apply ", 1, &thread_cmd_list); |
c906108c SS |
753 | |
754 | add_cmd ("all", class_run, thread_apply_all_command, | |
1a966eab | 755 | _("Apply a command to all threads."), &thread_apply_list); |
c906108c SS |
756 | |
757 | if (!xdb_commands) | |
758 | add_com_alias ("t", "thread", class_run, 1); | |
93815fbf VP |
759 | |
760 | add_setshow_boolean_cmd ("thread-events", no_class, | |
761 | &print_thread_events, _("\ | |
762 | Set printing of thread events (e.g., thread start and exit)."), _("\ | |
763 | Show printing of thread events (e.g., thread start and exit)."), NULL, | |
764 | NULL, | |
765 | show_print_thread_events, | |
766 | &setprintlist, &showprintlist); | |
c906108c | 767 | } |