Commit | Line | Data |
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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, |
0fb0cc75 JB |
4 | 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009 |
5 | Free Software Foundation, Inc. | |
8926118c | 6 | |
b6ba6518 | 7 | Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA. |
c906108c | 8 | |
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include "symtab.h" | |
26 | #include "frame.h" | |
27 | #include "inferior.h" | |
28 | #include "environ.h" | |
29 | #include "value.h" | |
30 | #include "target.h" | |
31 | #include "gdbthread.h" | |
60250e8b | 32 | #include "exceptions.h" |
c906108c SS |
33 | #include "command.h" |
34 | #include "gdbcmd.h" | |
4e052eda | 35 | #include "regcache.h" |
5b7f31a4 | 36 | #include "gdb.h" |
b66d6d2e | 37 | #include "gdb_string.h" |
c906108c SS |
38 | |
39 | #include <ctype.h> | |
40 | #include <sys/types.h> | |
41 | #include <signal.h> | |
8b93c638 | 42 | #include "ui-out.h" |
683f2885 | 43 | #include "observer.h" |
d4fc5b1e | 44 | #include "annotate.h" |
94cc34af PA |
45 | #include "cli/cli-decode.h" |
46 | ||
0d06e24b | 47 | /* Definition of struct thread_info exported to gdbthread.h */ |
c906108c SS |
48 | |
49 | /* Prototypes for exported functions. */ | |
50 | ||
a14ed312 | 51 | void _initialize_thread (void); |
c906108c SS |
52 | |
53 | /* Prototypes for local functions. */ | |
54 | ||
c906108c SS |
55 | static struct thread_info *thread_list = NULL; |
56 | static int highest_thread_num; | |
57 | ||
a14ed312 KB |
58 | static void thread_command (char *tidstr, int from_tty); |
59 | static void thread_apply_all_command (char *, int); | |
60 | static int thread_alive (struct thread_info *); | |
61 | static void info_threads_command (char *, int); | |
62 | static void thread_apply_command (char *, int); | |
39f77062 | 63 | static void restore_current_thread (ptid_t); |
a14ed312 | 64 | static void prune_threads (void); |
c906108c | 65 | |
4f8d22e3 PA |
66 | /* Frontend view of the thread state. Possible extensions: stepping, |
67 | finishing, until(ling),... */ | |
68 | enum thread_state | |
69 | { | |
70 | THREAD_STOPPED, | |
71 | THREAD_RUNNING, | |
72 | THREAD_EXITED, | |
73 | }; | |
74 | ||
a5321aa4 | 75 | struct thread_info* |
4e1c45ea | 76 | inferior_thread (void) |
8601f500 | 77 | { |
4e1c45ea PA |
78 | struct thread_info *tp = find_thread_pid (inferior_ptid); |
79 | gdb_assert (tp); | |
80 | return tp; | |
81 | } | |
8601f500 | 82 | |
4e1c45ea PA |
83 | void |
84 | delete_step_resume_breakpoint (struct thread_info *tp) | |
85 | { | |
86 | if (tp && tp->step_resume_breakpoint) | |
8601f500 | 87 | { |
4e1c45ea PA |
88 | delete_breakpoint (tp->step_resume_breakpoint); |
89 | tp->step_resume_breakpoint = NULL; | |
8601f500 MS |
90 | } |
91 | } | |
92 | ||
7c952b6d | 93 | static void |
4f8d22e3 | 94 | clear_thread_inferior_resources (struct thread_info *tp) |
7c952b6d ND |
95 | { |
96 | /* NOTE: this will take care of any left-over step_resume breakpoints, | |
4d8453a5 DJ |
97 | but not any user-specified thread-specific breakpoints. We can not |
98 | delete the breakpoint straight-off, because the inferior might not | |
99 | be stopped at the moment. */ | |
7c952b6d | 100 | if (tp->step_resume_breakpoint) |
4f8d22e3 PA |
101 | { |
102 | tp->step_resume_breakpoint->disposition = disp_del_at_next_stop; | |
103 | tp->step_resume_breakpoint = NULL; | |
104 | } | |
7c952b6d | 105 | |
a474d7c2 | 106 | bpstat_clear (&tp->stop_bpstat); |
95e54da7 PA |
107 | |
108 | discard_all_intermediate_continuations_thread (tp); | |
109 | discard_all_continuations_thread (tp); | |
4f8d22e3 PA |
110 | } |
111 | ||
112 | static void | |
113 | free_thread (struct thread_info *tp) | |
114 | { | |
115 | clear_thread_inferior_resources (tp); | |
a474d7c2 | 116 | |
7c952b6d ND |
117 | /* FIXME: do I ever need to call the back-end to give it a |
118 | chance at this private data before deleting the thread? */ | |
119 | if (tp->private) | |
b8c9b27d | 120 | xfree (tp->private); |
7c952b6d | 121 | |
b8c9b27d | 122 | xfree (tp); |
7c952b6d ND |
123 | } |
124 | ||
c906108c | 125 | void |
fba45db2 | 126 | init_thread_list (void) |
c906108c SS |
127 | { |
128 | struct thread_info *tp, *tpnext; | |
129 | ||
7c952b6d | 130 | highest_thread_num = 0; |
8ea051c5 | 131 | |
c906108c SS |
132 | if (!thread_list) |
133 | return; | |
134 | ||
135 | for (tp = thread_list; tp; tp = tpnext) | |
136 | { | |
137 | tpnext = tp->next; | |
7c952b6d | 138 | free_thread (tp); |
c906108c SS |
139 | } |
140 | ||
141 | thread_list = NULL; | |
c906108c SS |
142 | } |
143 | ||
0d06e24b | 144 | struct thread_info * |
93815fbf | 145 | add_thread_silent (ptid_t ptid) |
c906108c SS |
146 | { |
147 | struct thread_info *tp; | |
148 | ||
4f8d22e3 PA |
149 | tp = find_thread_pid (ptid); |
150 | if (tp) | |
151 | /* Found an old thread with the same id. It has to be dead, | |
152 | otherwise we wouldn't be adding a new thread with the same id. | |
153 | The OS is reusing this id --- delete it, and recreate a new | |
154 | one. */ | |
155 | { | |
156 | /* In addition to deleting the thread, if this is the current | |
dcf4fbde PA |
157 | thread, then we need to take care that delete_thread doesn't |
158 | really delete the thread if it is inferior_ptid. Create a | |
159 | new template thread in the list with an invalid ptid, switch | |
160 | to it, delete the original thread, reset the new thread's | |
161 | ptid, and switch to it. */ | |
4f8d22e3 PA |
162 | |
163 | if (ptid_equal (inferior_ptid, ptid)) | |
164 | { | |
165 | tp = xmalloc (sizeof (*tp)); | |
166 | memset (tp, 0, sizeof (*tp)); | |
167 | tp->ptid = minus_one_ptid; | |
168 | tp->num = ++highest_thread_num; | |
169 | tp->next = thread_list; | |
170 | thread_list = tp; | |
dcf4fbde PA |
171 | |
172 | /* Make switch_to_thread not read from the thread. */ | |
173 | tp->state_ = THREAD_EXITED; | |
174 | switch_to_thread (minus_one_ptid); | |
4f8d22e3 PA |
175 | |
176 | /* Now we can delete it. */ | |
177 | delete_thread (ptid); | |
178 | ||
dcf4fbde | 179 | /* Now reset its ptid, and reswitch inferior_ptid to it. */ |
4f8d22e3 | 180 | tp->ptid = ptid; |
dcf4fbde | 181 | tp->state_ = THREAD_STOPPED; |
4f8d22e3 PA |
182 | switch_to_thread (ptid); |
183 | ||
184 | observer_notify_new_thread (tp); | |
185 | ||
186 | /* All done. */ | |
187 | return tp; | |
188 | } | |
189 | else | |
190 | /* Just go ahead and delete it. */ | |
191 | delete_thread (ptid); | |
192 | } | |
193 | ||
6c0d3f6a MS |
194 | tp = (struct thread_info *) xmalloc (sizeof (*tp)); |
195 | memset (tp, 0, sizeof (*tp)); | |
39f77062 | 196 | tp->ptid = ptid; |
c906108c | 197 | tp->num = ++highest_thread_num; |
c906108c SS |
198 | tp->next = thread_list; |
199 | thread_list = tp; | |
cfc01461 VP |
200 | |
201 | observer_notify_new_thread (tp); | |
202 | ||
0d06e24b | 203 | return tp; |
c906108c SS |
204 | } |
205 | ||
93815fbf | 206 | struct thread_info * |
17faa917 | 207 | add_thread_with_info (ptid_t ptid, struct private_thread_info *private) |
93815fbf VP |
208 | { |
209 | struct thread_info *result = add_thread_silent (ptid); | |
210 | ||
17faa917 DJ |
211 | result->private = private; |
212 | ||
93815fbf | 213 | if (print_thread_events) |
fd532e2e | 214 | printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid)); |
d4fc5b1e NR |
215 | |
216 | annotate_new_thread (); | |
93815fbf VP |
217 | return result; |
218 | } | |
219 | ||
17faa917 DJ |
220 | struct thread_info * |
221 | add_thread (ptid_t ptid) | |
222 | { | |
223 | return add_thread_with_info (ptid, NULL); | |
224 | } | |
225 | ||
5e0b29c1 PA |
226 | /* Delete thread PTID. If SILENT, don't notify the observer of this |
227 | exit. */ | |
228 | static void | |
229 | delete_thread_1 (ptid_t ptid, int silent) | |
c906108c SS |
230 | { |
231 | struct thread_info *tp, *tpprev; | |
232 | ||
233 | tpprev = NULL; | |
234 | ||
235 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) | |
39f77062 | 236 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
237 | break; |
238 | ||
239 | if (!tp) | |
240 | return; | |
241 | ||
4f8d22e3 PA |
242 | /* If this is the current thread, or there's code out there that |
243 | relies on it existing (refcount > 0) we can't delete yet. Mark | |
244 | it as exited, and notify it. */ | |
245 | if (tp->refcount > 0 | |
246 | || ptid_equal (tp->ptid, inferior_ptid)) | |
247 | { | |
248 | if (tp->state_ != THREAD_EXITED) | |
249 | { | |
a07daef3 | 250 | observer_notify_thread_exit (tp, silent); |
4f8d22e3 PA |
251 | |
252 | /* Tag it as exited. */ | |
253 | tp->state_ = THREAD_EXITED; | |
254 | ||
255 | /* Clear breakpoints, etc. associated with this thread. */ | |
256 | clear_thread_inferior_resources (tp); | |
257 | } | |
258 | ||
259 | /* Will be really deleted some other time. */ | |
260 | return; | |
261 | } | |
262 | ||
c906108c SS |
263 | if (tpprev) |
264 | tpprev->next = tp->next; | |
265 | else | |
266 | thread_list = tp->next; | |
267 | ||
4f8d22e3 | 268 | /* Notify thread exit, but only if we haven't already. */ |
a07daef3 PA |
269 | if (tp->state_ != THREAD_EXITED) |
270 | observer_notify_thread_exit (tp, silent); | |
063bfe2e | 271 | |
7c952b6d | 272 | free_thread (tp); |
c906108c SS |
273 | } |
274 | ||
4f8d22e3 PA |
275 | /* Delete thread PTID and notify of thread exit. If this is |
276 | inferior_ptid, don't actually delete it, but tag it as exited and | |
277 | do the notification. If PTID is the user selected thread, clear | |
278 | it. */ | |
5e0b29c1 PA |
279 | void |
280 | delete_thread (ptid_t ptid) | |
281 | { | |
282 | delete_thread_1 (ptid, 0 /* not silent */); | |
283 | } | |
284 | ||
285 | void | |
286 | delete_thread_silent (ptid_t ptid) | |
287 | { | |
288 | delete_thread_1 (ptid, 1 /* silent */); | |
289 | } | |
290 | ||
1e92afda | 291 | struct thread_info * |
fba45db2 | 292 | find_thread_id (int num) |
c906108c SS |
293 | { |
294 | struct thread_info *tp; | |
295 | ||
296 | for (tp = thread_list; tp; tp = tp->next) | |
297 | if (tp->num == num) | |
298 | return tp; | |
299 | ||
300 | return NULL; | |
301 | } | |
302 | ||
39f77062 | 303 | /* Find a thread_info by matching PTID. */ |
0d06e24b | 304 | struct thread_info * |
39f77062 | 305 | find_thread_pid (ptid_t ptid) |
0d06e24b JM |
306 | { |
307 | struct thread_info *tp; | |
308 | ||
309 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 310 | if (ptid_equal (tp->ptid, ptid)) |
0d06e24b JM |
311 | return tp; |
312 | ||
313 | return NULL; | |
314 | } | |
315 | ||
316 | /* | |
317 | * Thread iterator function. | |
318 | * | |
319 | * Calls a callback function once for each thread, so long as | |
320 | * the callback function returns false. If the callback function | |
321 | * returns true, the iteration will end and the current thread | |
322 | * will be returned. This can be useful for implementing a | |
323 | * search for a thread with arbitrary attributes, or for applying | |
324 | * some operation to every thread. | |
325 | * | |
326 | * FIXME: some of the existing functionality, such as | |
327 | * "Thread apply all", might be rewritten using this functionality. | |
328 | */ | |
329 | ||
330 | struct thread_info * | |
fd118b61 KB |
331 | iterate_over_threads (int (*callback) (struct thread_info *, void *), |
332 | void *data) | |
0d06e24b | 333 | { |
4f8d22e3 | 334 | struct thread_info *tp, *next; |
0d06e24b | 335 | |
4f8d22e3 PA |
336 | for (tp = thread_list; tp; tp = next) |
337 | { | |
338 | next = tp->next; | |
339 | if ((*callback) (tp, data)) | |
340 | return tp; | |
341 | } | |
0d06e24b JM |
342 | |
343 | return NULL; | |
344 | } | |
345 | ||
20874c92 VP |
346 | int |
347 | thread_count (void) | |
348 | { | |
349 | int result = 0; | |
350 | struct thread_info *tp; | |
351 | ||
352 | for (tp = thread_list; tp; tp = tp->next) | |
353 | ++result; | |
354 | ||
355 | return result; | |
356 | } | |
357 | ||
c906108c | 358 | int |
fba45db2 | 359 | valid_thread_id (int num) |
c906108c SS |
360 | { |
361 | struct thread_info *tp; | |
362 | ||
363 | for (tp = thread_list; tp; tp = tp->next) | |
364 | if (tp->num == num) | |
365 | return 1; | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
370 | int | |
39f77062 | 371 | pid_to_thread_id (ptid_t ptid) |
c906108c SS |
372 | { |
373 | struct thread_info *tp; | |
374 | ||
375 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 376 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
377 | return tp->num; |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
39f77062 | 382 | ptid_t |
fba45db2 | 383 | thread_id_to_pid (int num) |
c906108c SS |
384 | { |
385 | struct thread_info *thread = find_thread_id (num); | |
386 | if (thread) | |
39f77062 | 387 | return thread->ptid; |
c906108c | 388 | else |
39f77062 | 389 | return pid_to_ptid (-1); |
c906108c SS |
390 | } |
391 | ||
392 | int | |
39f77062 | 393 | in_thread_list (ptid_t ptid) |
c906108c SS |
394 | { |
395 | struct thread_info *tp; | |
396 | ||
397 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 398 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
399 | return 1; |
400 | ||
401 | return 0; /* Never heard of 'im */ | |
402 | } | |
8926118c | 403 | |
bad34192 PA |
404 | /* Finds the first thread of the inferior given by PID. If PID is -1, |
405 | return the first thread in the list. */ | |
406 | ||
407 | struct thread_info * | |
408 | first_thread_of_process (int pid) | |
409 | { | |
410 | struct thread_info *tp, *ret = NULL; | |
411 | ||
412 | for (tp = thread_list; tp; tp = tp->next) | |
413 | if (pid == -1 || ptid_get_pid (tp->ptid) == pid) | |
414 | if (ret == NULL || tp->num < ret->num) | |
415 | ret = tp; | |
416 | ||
417 | return ret; | |
418 | } | |
419 | ||
8b93c638 JM |
420 | /* Print a list of thread ids currently known, and the total number of |
421 | threads. To be used from within catch_errors. */ | |
6949171e JJ |
422 | static int |
423 | do_captured_list_thread_ids (struct ui_out *uiout, void *arg) | |
8b93c638 JM |
424 | { |
425 | struct thread_info *tp; | |
426 | int num = 0; | |
3b31d625 | 427 | struct cleanup *cleanup_chain; |
592375cd | 428 | int current_thread = -1; |
8b93c638 | 429 | |
7990a578 EZ |
430 | prune_threads (); |
431 | target_find_new_threads (); | |
432 | ||
3b31d625 | 433 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "thread-ids"); |
8b93c638 JM |
434 | |
435 | for (tp = thread_list; tp; tp = tp->next) | |
436 | { | |
4f8d22e3 PA |
437 | if (tp->state_ == THREAD_EXITED) |
438 | continue; | |
592375cd VP |
439 | |
440 | if (ptid_equal (tp->ptid, inferior_ptid)) | |
441 | current_thread = tp->num; | |
442 | ||
8b93c638 JM |
443 | num++; |
444 | ui_out_field_int (uiout, "thread-id", tp->num); | |
445 | } | |
446 | ||
3b31d625 | 447 | do_cleanups (cleanup_chain); |
592375cd VP |
448 | |
449 | if (current_thread != -1) | |
450 | ui_out_field_int (uiout, "current-thread-id", current_thread); | |
8b93c638 JM |
451 | ui_out_field_int (uiout, "number-of-threads", num); |
452 | return GDB_RC_OK; | |
453 | } | |
454 | ||
455 | /* Official gdblib interface function to get a list of thread ids and | |
456 | the total number. */ | |
457 | enum gdb_rc | |
ce43223b | 458 | gdb_list_thread_ids (struct ui_out *uiout, char **error_message) |
8b93c638 | 459 | { |
b0b13bb4 DJ |
460 | if (catch_exceptions_with_msg (uiout, do_captured_list_thread_ids, NULL, |
461 | error_message, RETURN_MASK_ALL) < 0) | |
462 | return GDB_RC_FAIL; | |
463 | return GDB_RC_OK; | |
8b93c638 | 464 | } |
c906108c | 465 | |
c906108c SS |
466 | /* Return true if TP is an active thread. */ |
467 | static int | |
fba45db2 | 468 | thread_alive (struct thread_info *tp) |
c906108c | 469 | { |
4f8d22e3 | 470 | if (tp->state_ == THREAD_EXITED) |
c906108c | 471 | return 0; |
39f77062 | 472 | if (!target_thread_alive (tp->ptid)) |
4f8d22e3 | 473 | return 0; |
c906108c SS |
474 | return 1; |
475 | } | |
476 | ||
477 | static void | |
fba45db2 | 478 | prune_threads (void) |
c906108c | 479 | { |
d4f3574e | 480 | struct thread_info *tp, *next; |
c906108c | 481 | |
c906108c SS |
482 | for (tp = thread_list; tp; tp = next) |
483 | { | |
484 | next = tp->next; | |
485 | if (!thread_alive (tp)) | |
39f77062 | 486 | delete_thread (tp->ptid); |
c906108c SS |
487 | } |
488 | } | |
489 | ||
5231c1fd PA |
490 | void |
491 | thread_change_ptid (ptid_t old_ptid, ptid_t new_ptid) | |
492 | { | |
82f73884 PA |
493 | struct inferior *inf; |
494 | struct thread_info *tp; | |
495 | ||
496 | /* It can happen that what we knew as the target inferior id | |
497 | changes. E.g, target remote may only discover the remote process | |
498 | pid after adding the inferior to GDB's list. */ | |
499 | inf = find_inferior_pid (ptid_get_pid (old_ptid)); | |
500 | inf->pid = ptid_get_pid (new_ptid); | |
501 | ||
502 | tp = find_thread_pid (old_ptid); | |
5231c1fd PA |
503 | tp->ptid = new_ptid; |
504 | ||
505 | observer_notify_thread_ptid_changed (old_ptid, new_ptid); | |
506 | } | |
507 | ||
e1ac3328 VP |
508 | void |
509 | set_running (ptid_t ptid, int running) | |
510 | { | |
511 | struct thread_info *tp; | |
512 | ||
e1ac3328 VP |
513 | /* We try not to notify the observer if no thread has actually changed |
514 | the running state -- merely to reduce the number of messages to | |
515 | frontend. Frontend is supposed to handle multiple *running just fine. */ | |
516 | if (PIDGET (ptid) == -1) | |
517 | { | |
518 | int any_started = 0; | |
519 | for (tp = thread_list; tp; tp = tp->next) | |
520 | { | |
4f8d22e3 PA |
521 | if (tp->state_ == THREAD_EXITED) |
522 | continue; | |
523 | if (running && tp->state_ == THREAD_STOPPED) | |
524 | any_started = 1; | |
525 | tp->state_ = running ? THREAD_RUNNING : THREAD_STOPPED; | |
e1ac3328 | 526 | } |
c5a4d20b PA |
527 | if (any_started) |
528 | observer_notify_target_resumed (ptid); | |
e1ac3328 VP |
529 | } |
530 | else | |
531 | { | |
4f8d22e3 | 532 | int started = 0; |
e1ac3328 VP |
533 | tp = find_thread_pid (ptid); |
534 | gdb_assert (tp); | |
4f8d22e3 PA |
535 | gdb_assert (tp->state_ != THREAD_EXITED); |
536 | if (running && tp->state_ == THREAD_STOPPED) | |
537 | started = 1; | |
538 | tp->state_ = running ? THREAD_RUNNING : THREAD_STOPPED; | |
c5a4d20b | 539 | if (started) |
4f8d22e3 PA |
540 | observer_notify_target_resumed (ptid); |
541 | } | |
e1ac3328 VP |
542 | } |
543 | ||
4f8d22e3 PA |
544 | static int |
545 | is_thread_state (ptid_t ptid, enum thread_state state) | |
e1ac3328 VP |
546 | { |
547 | struct thread_info *tp; | |
548 | ||
8ea051c5 PA |
549 | if (!target_has_execution) |
550 | return 0; | |
551 | ||
e1ac3328 VP |
552 | tp = find_thread_pid (ptid); |
553 | gdb_assert (tp); | |
4f8d22e3 PA |
554 | return tp->state_ == state; |
555 | } | |
556 | ||
557 | int | |
558 | is_stopped (ptid_t ptid) | |
559 | { | |
560 | /* Without execution, this property is always true. */ | |
561 | if (!target_has_execution) | |
562 | return 1; | |
563 | ||
564 | return is_thread_state (ptid, THREAD_STOPPED); | |
565 | } | |
566 | ||
567 | int | |
568 | is_exited (ptid_t ptid) | |
569 | { | |
570 | /* Without execution, this property is always false. */ | |
571 | if (!target_has_execution) | |
572 | return 0; | |
573 | ||
574 | return is_thread_state (ptid, THREAD_EXITED); | |
575 | } | |
576 | ||
577 | int | |
578 | is_running (ptid_t ptid) | |
579 | { | |
580 | /* Without execution, this property is always false. */ | |
581 | if (!target_has_execution) | |
582 | return 0; | |
583 | ||
584 | return is_thread_state (ptid, THREAD_RUNNING); | |
e1ac3328 VP |
585 | } |
586 | ||
8ea051c5 PA |
587 | int |
588 | any_running (void) | |
589 | { | |
590 | struct thread_info *tp; | |
591 | ||
592 | if (!target_has_execution) | |
593 | return 0; | |
594 | ||
8ea051c5 | 595 | for (tp = thread_list; tp; tp = tp->next) |
4f8d22e3 | 596 | if (tp->state_ == THREAD_RUNNING) |
8ea051c5 PA |
597 | return 1; |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
602 | int | |
603 | is_executing (ptid_t ptid) | |
604 | { | |
605 | struct thread_info *tp; | |
606 | ||
607 | if (!target_has_execution) | |
608 | return 0; | |
609 | ||
8ea051c5 PA |
610 | tp = find_thread_pid (ptid); |
611 | gdb_assert (tp); | |
612 | return tp->executing_; | |
613 | } | |
614 | ||
615 | void | |
616 | set_executing (ptid_t ptid, int executing) | |
617 | { | |
618 | struct thread_info *tp; | |
619 | ||
8ea051c5 PA |
620 | if (PIDGET (ptid) == -1) |
621 | { | |
622 | for (tp = thread_list; tp; tp = tp->next) | |
623 | tp->executing_ = executing; | |
624 | } | |
625 | else | |
626 | { | |
627 | tp = find_thread_pid (ptid); | |
628 | gdb_assert (tp); | |
629 | tp->executing_ = executing; | |
630 | } | |
631 | } | |
632 | ||
252fbfc8 PA |
633 | void |
634 | set_stop_requested (ptid_t ptid, int stop) | |
635 | { | |
636 | struct thread_info *tp; | |
637 | int all = ptid_equal (ptid, minus_one_ptid); | |
638 | ||
639 | if (all || ptid_is_pid (ptid)) | |
640 | { | |
641 | for (tp = thread_list; tp; tp = tp->next) | |
642 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) | |
643 | tp->stop_requested = stop; | |
644 | } | |
645 | else | |
646 | { | |
647 | tp = find_thread_pid (ptid); | |
648 | gdb_assert (tp); | |
649 | tp->stop_requested = stop; | |
650 | } | |
651 | ||
652 | /* Call the stop requested observer so other components of GDB can | |
653 | react to this request. */ | |
654 | if (stop) | |
655 | observer_notify_thread_stop_requested (ptid); | |
656 | } | |
657 | ||
29f49a6a PA |
658 | void |
659 | finish_thread_state (ptid_t ptid) | |
660 | { | |
661 | struct thread_info *tp; | |
662 | int all; | |
663 | int any_started = 0; | |
664 | ||
665 | all = ptid_equal (ptid, minus_one_ptid); | |
666 | ||
667 | if (all || ptid_is_pid (ptid)) | |
668 | { | |
669 | for (tp = thread_list; tp; tp = tp->next) | |
670 | { | |
671 | if (tp->state_ == THREAD_EXITED) | |
672 | continue; | |
673 | if (all || ptid_get_pid (ptid) == ptid_get_pid (tp->ptid)) | |
674 | { | |
675 | if (tp->executing_ && tp->state_ == THREAD_STOPPED) | |
676 | any_started = 1; | |
677 | tp->state_ = tp->executing_ ? THREAD_RUNNING : THREAD_STOPPED; | |
678 | } | |
679 | } | |
680 | } | |
681 | else | |
682 | { | |
683 | tp = find_thread_pid (ptid); | |
684 | gdb_assert (tp); | |
685 | if (tp->state_ != THREAD_EXITED) | |
686 | { | |
687 | if (tp->executing_ && tp->state_ == THREAD_STOPPED) | |
688 | any_started = 1; | |
689 | tp->state_ = tp->executing_ ? THREAD_RUNNING : THREAD_STOPPED; | |
690 | } | |
691 | } | |
692 | ||
693 | if (any_started) | |
694 | observer_notify_target_resumed (ptid); | |
695 | } | |
696 | ||
697 | void | |
698 | finish_thread_state_cleanup (void *arg) | |
699 | { | |
700 | ptid_t *ptid_p = arg; | |
701 | ||
702 | gdb_assert (arg); | |
703 | ||
704 | finish_thread_state (*ptid_p); | |
705 | } | |
706 | ||
8e8901c5 VP |
707 | /* Prints the list of threads and their details on UIOUT. |
708 | This is a version of 'info_thread_command' suitable for | |
709 | use from MI. | |
4f8d22e3 | 710 | If REQUESTED_THREAD is not -1, it's the GDB id of the thread |
8e8901c5 | 711 | that should be printed. Otherwise, all threads are |
3ee1c036 VP |
712 | printed. |
713 | If PID is not -1, only print threads from the process PID. | |
714 | Otherwise, threads from all attached PIDs are printed. | |
715 | If both REQUESTED_THREAD and PID are not -1, then the thread | |
716 | is printed if it belongs to the specified process. Otherwise, | |
717 | an error is raised. */ | |
8e8901c5 | 718 | void |
3ee1c036 | 719 | print_thread_info (struct ui_out *uiout, int requested_thread, int pid) |
c906108c SS |
720 | { |
721 | struct thread_info *tp; | |
39f77062 | 722 | ptid_t current_ptid; |
99b3d574 | 723 | struct cleanup *old_chain; |
0d06e24b | 724 | char *extra_info; |
8e8901c5 | 725 | int current_thread = -1; |
c906108c | 726 | |
c906108c | 727 | prune_threads (); |
b83266a0 | 728 | target_find_new_threads (); |
39f77062 | 729 | current_ptid = inferior_ptid; |
4f8d22e3 PA |
730 | |
731 | /* We'll be switching threads temporarily. */ | |
732 | old_chain = make_cleanup_restore_current_thread (); | |
733 | ||
734 | make_cleanup_ui_out_list_begin_end (uiout, "threads"); | |
c906108c SS |
735 | for (tp = thread_list; tp; tp = tp->next) |
736 | { | |
8e8901c5 VP |
737 | struct cleanup *chain2; |
738 | ||
739 | if (requested_thread != -1 && tp->num != requested_thread) | |
740 | continue; | |
741 | ||
3ee1c036 VP |
742 | if (pid != -1 && PIDGET (tp->ptid) != pid) |
743 | { | |
744 | if (requested_thread != -1) | |
745 | error (_("Requested thread not found in requested process")); | |
746 | continue; | |
747 | } | |
748 | ||
4f8d22e3 PA |
749 | if (ptid_equal (tp->ptid, current_ptid)) |
750 | current_thread = tp->num; | |
751 | ||
752 | if (tp->state_ == THREAD_EXITED) | |
753 | continue; | |
754 | ||
8e8901c5 VP |
755 | chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); |
756 | ||
39f77062 | 757 | if (ptid_equal (tp->ptid, current_ptid)) |
4f8d22e3 | 758 | ui_out_text (uiout, "* "); |
c906108c | 759 | else |
8e8901c5 | 760 | ui_out_text (uiout, " "); |
c906108c | 761 | |
8e8901c5 VP |
762 | ui_out_field_int (uiout, "id", tp->num); |
763 | ui_out_text (uiout, " "); | |
54ba13f7 | 764 | ui_out_field_string (uiout, "target-id", target_pid_to_str (tp->ptid)); |
0d06e24b | 765 | |
ed406532 VP |
766 | extra_info = target_extra_thread_info (tp); |
767 | if (extra_info) | |
8e8901c5 | 768 | { |
ed406532 VP |
769 | ui_out_text (uiout, " ("); |
770 | ui_out_field_string (uiout, "details", extra_info); | |
771 | ui_out_text (uiout, ")"); | |
8e8901c5 | 772 | } |
ed406532 | 773 | ui_out_text (uiout, " "); |
4f8d22e3 PA |
774 | |
775 | if (tp->state_ == THREAD_RUNNING) | |
94cc34af PA |
776 | ui_out_text (uiout, "(running)\n"); |
777 | else | |
778 | { | |
779 | /* The switch below puts us at the top of the stack (leaf | |
780 | frame). */ | |
781 | switch_to_thread (tp->ptid); | |
782 | print_stack_frame (get_selected_frame (NULL), | |
783 | /* For MI output, print frame level. */ | |
784 | ui_out_is_mi_like_p (uiout), | |
785 | LOCATION); | |
786 | } | |
8e8901c5 | 787 | |
90139f7d VP |
788 | if (ui_out_is_mi_like_p (uiout)) |
789 | { | |
790 | char *state = "stopped"; | |
ed406532 | 791 | if (tp->state_ == THREAD_RUNNING) |
90139f7d VP |
792 | state = "running"; |
793 | ui_out_field_string (uiout, "state", state); | |
794 | } | |
795 | ||
8e8901c5 | 796 | do_cleanups (chain2); |
c906108c SS |
797 | } |
798 | ||
99b3d574 DP |
799 | /* Restores the current thread and the frame selected before |
800 | the "info threads" command. */ | |
801 | do_cleanups (old_chain); | |
c906108c | 802 | |
d729566a | 803 | if (pid == -1 && requested_thread == -1) |
8e8901c5 | 804 | { |
4f8d22e3 | 805 | gdb_assert (current_thread != -1 |
d729566a PA |
806 | || !thread_list |
807 | || ptid_equal (inferior_ptid, null_ptid)); | |
0bcd3e20 | 808 | if (current_thread != -1 && ui_out_is_mi_like_p (uiout)) |
8e8901c5 | 809 | ui_out_field_int (uiout, "current-thread-id", current_thread); |
94cc34af | 810 | |
4f8d22e3 PA |
811 | if (current_thread != -1 && is_exited (current_ptid)) |
812 | ui_out_message (uiout, 0, "\n\ | |
813 | The current thread <Thread ID %d> has terminated. See `help thread'.\n", | |
814 | current_thread); | |
d729566a PA |
815 | else if (thread_list |
816 | && current_thread == -1 | |
817 | && ptid_equal (current_ptid, null_ptid)) | |
818 | ui_out_message (uiout, 0, "\n\ | |
819 | No selected thread. See `help thread'.\n"); | |
c906108c | 820 | } |
c906108c SS |
821 | } |
822 | ||
8e8901c5 VP |
823 | |
824 | /* Print information about currently known threads | |
825 | ||
826 | * Note: this has the drawback that it _really_ switches | |
827 | * threads, which frees the frame cache. A no-side | |
828 | * effects info-threads command would be nicer. | |
829 | */ | |
830 | ||
831 | static void | |
832 | info_threads_command (char *arg, int from_tty) | |
833 | { | |
3ee1c036 | 834 | print_thread_info (uiout, -1, -1); |
8e8901c5 VP |
835 | } |
836 | ||
c906108c SS |
837 | /* Switch from one thread to another. */ |
838 | ||
6a6b96b9 | 839 | void |
39f77062 | 840 | switch_to_thread (ptid_t ptid) |
c906108c | 841 | { |
39f77062 | 842 | if (ptid_equal (ptid, inferior_ptid)) |
c906108c SS |
843 | return; |
844 | ||
39f77062 | 845 | inferior_ptid = ptid; |
35f196d9 | 846 | reinit_frame_cache (); |
c906108c | 847 | registers_changed (); |
94cc34af | 848 | |
4f8d22e3 PA |
849 | /* We don't check for is_stopped, because we're called at times |
850 | while in the TARGET_RUNNING state, e.g., while handling an | |
851 | internal event. */ | |
d729566a PA |
852 | if (!ptid_equal (inferior_ptid, null_ptid) |
853 | && !is_exited (ptid) | |
854 | && !is_executing (ptid)) | |
94cc34af PA |
855 | stop_pc = read_pc (); |
856 | else | |
857 | stop_pc = ~(CORE_ADDR) 0; | |
c906108c SS |
858 | } |
859 | ||
860 | static void | |
39f77062 | 861 | restore_current_thread (ptid_t ptid) |
c906108c | 862 | { |
dcf4fbde | 863 | switch_to_thread (ptid); |
99b3d574 DP |
864 | } |
865 | ||
866 | static void | |
4f8d22e3 | 867 | restore_selected_frame (struct frame_id a_frame_id, int frame_level) |
99b3d574 | 868 | { |
4f8d22e3 PA |
869 | struct frame_info *frame = NULL; |
870 | int count; | |
871 | ||
872 | gdb_assert (frame_level >= 0); | |
873 | ||
874 | /* Restore by level first, check if the frame id is the same as | |
875 | expected. If that fails, try restoring by frame id. If that | |
876 | fails, nothing to do, just warn the user. */ | |
877 | ||
878 | count = frame_level; | |
879 | frame = find_relative_frame (get_current_frame (), &count); | |
880 | if (count == 0 | |
881 | && frame != NULL | |
882 | /* Either the frame ids match, of they're both invalid. The | |
883 | latter case is not failsafe, but since it's highly unlikely | |
884 | the search by level finds the wrong frame, it's 99.9(9)% of | |
885 | the time (for all practical purposes) safe. */ | |
886 | && (frame_id_eq (get_frame_id (frame), a_frame_id) | |
887 | /* Note: could be better to check every frame_id | |
888 | member for equality here. */ | |
889 | || (!frame_id_p (get_frame_id (frame)) | |
890 | && !frame_id_p (a_frame_id)))) | |
891 | { | |
892 | /* Cool, all is fine. */ | |
893 | select_frame (frame); | |
894 | return; | |
895 | } | |
99b3d574 | 896 | |
4f8d22e3 PA |
897 | frame = frame_find_by_id (a_frame_id); |
898 | if (frame != NULL) | |
899 | { | |
900 | /* Cool, refound it. */ | |
901 | select_frame (frame); | |
902 | return; | |
903 | } | |
99b3d574 | 904 | |
0c501536 PA |
905 | /* Nothing else to do, the frame layout really changed. Select the |
906 | innermost stack frame. */ | |
907 | select_frame (get_current_frame ()); | |
908 | ||
909 | /* Warn the user. */ | |
4f8d22e3 | 910 | if (!ui_out_is_mi_like_p (uiout)) |
99b3d574 | 911 | { |
4f8d22e3 PA |
912 | warning (_("\ |
913 | Couldn't restore frame #%d in current thread, at reparsed frame #0\n"), | |
914 | frame_level); | |
915 | /* For MI, we should probably have a notification about | |
916 | current frame change. But this error is not very | |
917 | likely, so don't bother for now. */ | |
0c501536 | 918 | print_stack_frame (get_selected_frame (NULL), 1, SRC_LINE); |
c906108c SS |
919 | } |
920 | } | |
921 | ||
6ecce94d AC |
922 | struct current_thread_cleanup |
923 | { | |
39f77062 | 924 | ptid_t inferior_ptid; |
99b3d574 | 925 | struct frame_id selected_frame_id; |
4f8d22e3 PA |
926 | int selected_frame_level; |
927 | int was_stopped; | |
6ecce94d AC |
928 | }; |
929 | ||
930 | static void | |
931 | do_restore_current_thread_cleanup (void *arg) | |
932 | { | |
4f8d22e3 | 933 | struct thread_info *tp; |
6ecce94d | 934 | struct current_thread_cleanup *old = arg; |
d729566a PA |
935 | |
936 | tp = find_thread_pid (old->inferior_ptid); | |
937 | ||
938 | /* If the previously selected thread belonged to a process that has | |
939 | in the mean time been deleted (due to normal exit, detach, etc.), | |
940 | then don't revert back to it, but instead simply drop back to no | |
941 | thread selected. */ | |
942 | if (tp | |
88fc996f | 943 | && find_inferior_pid (ptid_get_pid (tp->ptid)) != NULL) |
d729566a | 944 | restore_current_thread (old->inferior_ptid); |
88fc996f DE |
945 | else |
946 | restore_current_thread (null_ptid); | |
94cc34af | 947 | |
4f8d22e3 PA |
948 | /* The running state of the originally selected thread may have |
949 | changed, so we have to recheck it here. */ | |
d729566a PA |
950 | if (!ptid_equal (inferior_ptid, null_ptid) |
951 | && old->was_stopped | |
4f8d22e3 PA |
952 | && is_stopped (inferior_ptid) |
953 | && target_has_registers | |
954 | && target_has_stack | |
955 | && target_has_memory) | |
956 | restore_selected_frame (old->selected_frame_id, | |
957 | old->selected_frame_level); | |
958 | } | |
959 | ||
960 | static void | |
961 | restore_current_thread_cleanup_dtor (void *arg) | |
962 | { | |
963 | struct current_thread_cleanup *old = arg; | |
964 | struct thread_info *tp; | |
965 | tp = find_thread_pid (old->inferior_ptid); | |
966 | if (tp) | |
967 | tp->refcount--; | |
b8c9b27d | 968 | xfree (old); |
6ecce94d AC |
969 | } |
970 | ||
6208b47d | 971 | struct cleanup * |
4f8d22e3 | 972 | make_cleanup_restore_current_thread (void) |
6ecce94d | 973 | { |
4f8d22e3 PA |
974 | struct thread_info *tp; |
975 | struct frame_info *frame; | |
976 | struct current_thread_cleanup *old; | |
977 | ||
978 | old = xmalloc (sizeof (struct current_thread_cleanup)); | |
39f77062 | 979 | old->inferior_ptid = inferior_ptid; |
4f8d22e3 | 980 | |
d729566a PA |
981 | if (!ptid_equal (inferior_ptid, null_ptid)) |
982 | { | |
983 | old->was_stopped = is_stopped (inferior_ptid); | |
984 | if (old->was_stopped | |
985 | && target_has_registers | |
986 | && target_has_stack | |
987 | && target_has_memory) | |
988 | frame = get_selected_frame (NULL); | |
989 | else | |
990 | frame = NULL; | |
4f8d22e3 | 991 | |
d729566a PA |
992 | old->selected_frame_id = get_frame_id (frame); |
993 | old->selected_frame_level = frame_relative_level (frame); | |
994 | ||
995 | tp = find_thread_pid (inferior_ptid); | |
996 | if (tp) | |
997 | tp->refcount++; | |
998 | } | |
4f8d22e3 PA |
999 | |
1000 | return make_cleanup_dtor (do_restore_current_thread_cleanup, old, | |
1001 | restore_current_thread_cleanup_dtor); | |
6ecce94d AC |
1002 | } |
1003 | ||
c906108c SS |
1004 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
1005 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist | |
1006 | of two numbers seperated by a hyphen. Examples: | |
1007 | ||
c5aa993b JM |
1008 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
1009 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
1010 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads | |
1011 | */ | |
c906108c SS |
1012 | |
1013 | static void | |
fba45db2 | 1014 | thread_apply_all_command (char *cmd, int from_tty) |
c906108c SS |
1015 | { |
1016 | struct thread_info *tp; | |
4f8d22e3 | 1017 | struct cleanup *old_chain; |
e35ce267 | 1018 | char *saved_cmd; |
c906108c SS |
1019 | |
1020 | if (cmd == NULL || *cmd == '\000') | |
8a3fe4f8 | 1021 | error (_("Please specify a command following the thread ID list")); |
94cc34af | 1022 | |
4f8d22e3 | 1023 | prune_threads (); |
e9d196c5 MS |
1024 | target_find_new_threads (); |
1025 | ||
4f8d22e3 PA |
1026 | old_chain = make_cleanup_restore_current_thread (); |
1027 | ||
e35ce267 CF |
1028 | /* Save a copy of the command in case it is clobbered by |
1029 | execute_command */ | |
5b616ba1 | 1030 | saved_cmd = xstrdup (cmd); |
94cc34af | 1031 | make_cleanup (xfree, saved_cmd); |
c906108c SS |
1032 | for (tp = thread_list; tp; tp = tp->next) |
1033 | if (thread_alive (tp)) | |
1034 | { | |
dcf4fbde | 1035 | switch_to_thread (tp->ptid); |
94cc34af | 1036 | |
a3f17187 | 1037 | printf_filtered (_("\nThread %d (%s):\n"), |
54ba13f7 | 1038 | tp->num, target_pid_to_str (inferior_ptid)); |
c906108c | 1039 | execute_command (cmd, from_tty); |
6949171e | 1040 | strcpy (cmd, saved_cmd); /* Restore exact command used previously */ |
c906108c | 1041 | } |
6ecce94d AC |
1042 | |
1043 | do_cleanups (old_chain); | |
c906108c SS |
1044 | } |
1045 | ||
1046 | static void | |
fba45db2 | 1047 | thread_apply_command (char *tidlist, int from_tty) |
c906108c SS |
1048 | { |
1049 | char *cmd; | |
1050 | char *p; | |
1051 | struct cleanup *old_chain; | |
e35ce267 | 1052 | char *saved_cmd; |
c906108c SS |
1053 | |
1054 | if (tidlist == NULL || *tidlist == '\000') | |
8a3fe4f8 | 1055 | error (_("Please specify a thread ID list")); |
c906108c | 1056 | |
c5aa993b | 1057 | for (cmd = tidlist; *cmd != '\000' && !isalpha (*cmd); cmd++); |
c906108c SS |
1058 | |
1059 | if (*cmd == '\000') | |
8a3fe4f8 | 1060 | error (_("Please specify a command following the thread ID list")); |
c906108c | 1061 | |
e35ce267 CF |
1062 | /* Save a copy of the command in case it is clobbered by |
1063 | execute_command */ | |
5b616ba1 | 1064 | saved_cmd = xstrdup (cmd); |
4f8d22e3 | 1065 | old_chain = make_cleanup (xfree, saved_cmd); |
c906108c SS |
1066 | while (tidlist < cmd) |
1067 | { | |
1068 | struct thread_info *tp; | |
1069 | int start, end; | |
1070 | ||
1071 | start = strtol (tidlist, &p, 10); | |
1072 | if (p == tidlist) | |
8a3fe4f8 | 1073 | error (_("Error parsing %s"), tidlist); |
c906108c SS |
1074 | tidlist = p; |
1075 | ||
1076 | while (*tidlist == ' ' || *tidlist == '\t') | |
1077 | tidlist++; | |
1078 | ||
1079 | if (*tidlist == '-') /* Got a range of IDs? */ | |
1080 | { | |
c5aa993b | 1081 | tidlist++; /* Skip the - */ |
c906108c SS |
1082 | end = strtol (tidlist, &p, 10); |
1083 | if (p == tidlist) | |
8a3fe4f8 | 1084 | error (_("Error parsing %s"), tidlist); |
c906108c SS |
1085 | tidlist = p; |
1086 | ||
1087 | while (*tidlist == ' ' || *tidlist == '\t') | |
1088 | tidlist++; | |
1089 | } | |
1090 | else | |
1091 | end = start; | |
1092 | ||
65fc9b77 PA |
1093 | make_cleanup_restore_current_thread (); |
1094 | ||
c906108c SS |
1095 | for (; start <= end; start++) |
1096 | { | |
1097 | tp = find_thread_id (start); | |
1098 | ||
1099 | if (!tp) | |
8a3fe4f8 | 1100 | warning (_("Unknown thread %d."), start); |
c906108c | 1101 | else if (!thread_alive (tp)) |
8a3fe4f8 | 1102 | warning (_("Thread %d has terminated."), start); |
c906108c SS |
1103 | else |
1104 | { | |
dcf4fbde | 1105 | switch_to_thread (tp->ptid); |
4f8d22e3 | 1106 | |
a3f17187 | 1107 | printf_filtered (_("\nThread %d (%s):\n"), tp->num, |
54ba13f7 | 1108 | target_pid_to_str (inferior_ptid)); |
c906108c | 1109 | execute_command (cmd, from_tty); |
4f8d22e3 PA |
1110 | |
1111 | /* Restore exact command used previously. */ | |
1112 | strcpy (cmd, saved_cmd); | |
c906108c SS |
1113 | } |
1114 | } | |
1115 | } | |
6ecce94d AC |
1116 | |
1117 | do_cleanups (old_chain); | |
c906108c SS |
1118 | } |
1119 | ||
1120 | /* Switch to the specified thread. Will dispatch off to thread_apply_command | |
1121 | if prefix of arg is `apply'. */ | |
1122 | ||
1123 | static void | |
fba45db2 | 1124 | thread_command (char *tidstr, int from_tty) |
c906108c | 1125 | { |
c906108c SS |
1126 | if (!tidstr) |
1127 | { | |
d729566a PA |
1128 | if (ptid_equal (inferior_ptid, null_ptid)) |
1129 | error (_("No thread selected")); | |
1130 | ||
c906108c | 1131 | if (target_has_stack) |
4f8d22e3 PA |
1132 | { |
1133 | if (is_exited (inferior_ptid)) | |
1134 | printf_filtered (_("[Current thread is %d (%s) (exited)]\n"), | |
1135 | pid_to_thread_id (inferior_ptid), | |
54ba13f7 | 1136 | target_pid_to_str (inferior_ptid)); |
4f8d22e3 PA |
1137 | else |
1138 | printf_filtered (_("[Current thread is %d (%s)]\n"), | |
1139 | pid_to_thread_id (inferior_ptid), | |
54ba13f7 | 1140 | target_pid_to_str (inferior_ptid)); |
4f8d22e3 | 1141 | } |
c906108c | 1142 | else |
8a3fe4f8 | 1143 | error (_("No stack.")); |
c906108c SS |
1144 | return; |
1145 | } | |
c5394b80 | 1146 | |
ce43223b | 1147 | gdb_thread_select (uiout, tidstr, NULL); |
c5394b80 JM |
1148 | } |
1149 | ||
93815fbf VP |
1150 | /* Print notices when new threads are attached and detached. */ |
1151 | int print_thread_events = 1; | |
1152 | static void | |
1153 | show_print_thread_events (struct ui_file *file, int from_tty, | |
1154 | struct cmd_list_element *c, const char *value) | |
1155 | { | |
1156 | fprintf_filtered (file, _("\ | |
1157 | Printing of thread events is %s.\n"), | |
1158 | value); | |
1159 | } | |
1160 | ||
c5394b80 | 1161 | static int |
6949171e | 1162 | do_captured_thread_select (struct ui_out *uiout, void *tidstr) |
c5394b80 JM |
1163 | { |
1164 | int num; | |
1165 | struct thread_info *tp; | |
1166 | ||
81490ea1 | 1167 | num = value_as_long (parse_and_eval (tidstr)); |
c906108c SS |
1168 | |
1169 | tp = find_thread_id (num); | |
1170 | ||
8b93c638 | 1171 | if (!tp) |
8a3fe4f8 | 1172 | error (_("Thread ID %d not known."), num); |
c906108c SS |
1173 | |
1174 | if (!thread_alive (tp)) | |
8a3fe4f8 | 1175 | error (_("Thread ID %d has terminated."), num); |
c906108c | 1176 | |
dcf4fbde | 1177 | switch_to_thread (tp->ptid); |
c906108c | 1178 | |
db5a7484 NR |
1179 | annotate_thread_changed (); |
1180 | ||
8b93c638 | 1181 | ui_out_text (uiout, "[Switching to thread "); |
39f77062 | 1182 | ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_ptid)); |
8b93c638 | 1183 | ui_out_text (uiout, " ("); |
54ba13f7 | 1184 | ui_out_text (uiout, target_pid_to_str (inferior_ptid)); |
8b93c638 | 1185 | ui_out_text (uiout, ")]"); |
c5394b80 | 1186 | |
4f8d22e3 PA |
1187 | /* Note that we can't reach this with an exited thread, due to the |
1188 | thread_alive check above. */ | |
1189 | if (tp->state_ == THREAD_RUNNING) | |
94cc34af | 1190 | ui_out_text (uiout, "(running)\n"); |
4f8d22e3 PA |
1191 | else |
1192 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); | |
1193 | ||
1194 | /* Since the current thread may have changed, see if there is any | |
1195 | exited thread we can now delete. */ | |
1196 | prune_threads (); | |
94cc34af | 1197 | |
c5394b80 JM |
1198 | return GDB_RC_OK; |
1199 | } | |
1200 | ||
1201 | enum gdb_rc | |
ce43223b | 1202 | gdb_thread_select (struct ui_out *uiout, char *tidstr, char **error_message) |
c5394b80 | 1203 | { |
b0b13bb4 DJ |
1204 | if (catch_exceptions_with_msg (uiout, do_captured_thread_select, tidstr, |
1205 | error_message, RETURN_MASK_ALL) < 0) | |
1206 | return GDB_RC_FAIL; | |
1207 | return GDB_RC_OK; | |
c906108c SS |
1208 | } |
1209 | ||
1210 | /* Commands with a prefix of `thread'. */ | |
1211 | struct cmd_list_element *thread_cmd_list = NULL; | |
1212 | ||
1213 | void | |
fba45db2 | 1214 | _initialize_thread (void) |
c906108c SS |
1215 | { |
1216 | static struct cmd_list_element *thread_apply_list = NULL; | |
c906108c | 1217 | |
d729566a PA |
1218 | add_info ("threads", info_threads_command, |
1219 | _("IDs of currently known threads.")); | |
c906108c | 1220 | |
d729566a | 1221 | add_prefix_cmd ("thread", class_run, thread_command, _("\ |
1bedd215 AC |
1222 | Use this command to switch between threads.\n\ |
1223 | The new thread ID must be currently known."), | |
d729566a | 1224 | &thread_cmd_list, "thread ", 1, &cmdlist); |
c906108c | 1225 | |
d729566a PA |
1226 | add_prefix_cmd ("apply", class_run, thread_apply_command, |
1227 | _("Apply a command to a list of threads."), | |
1228 | &thread_apply_list, "thread apply ", 1, &thread_cmd_list); | |
c906108c | 1229 | |
d729566a PA |
1230 | add_cmd ("all", class_run, thread_apply_all_command, |
1231 | _("Apply a command to all threads."), &thread_apply_list); | |
c906108c SS |
1232 | |
1233 | if (!xdb_commands) | |
1234 | add_com_alias ("t", "thread", class_run, 1); | |
93815fbf VP |
1235 | |
1236 | add_setshow_boolean_cmd ("thread-events", no_class, | |
1237 | &print_thread_events, _("\ | |
11c68c47 EZ |
1238 | Set printing of thread events (such as thread start and exit)."), _("\ |
1239 | Show printing of thread events (such as thread start and exit)."), NULL, | |
93815fbf VP |
1240 | NULL, |
1241 | show_print_thread_events, | |
1242 | &setprintlist, &showprintlist); | |
c906108c | 1243 | } |