Commit | Line | Data |
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c906108c | 1 | /* Multi-process/thread control for GDB, the GNU debugger. |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1986-2015 Free Software Foundation, Inc. |
8926118c | 4 | |
b6ba6518 | 5 | Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
24 | #include "frame.h" | |
25 | #include "inferior.h" | |
26 | #include "environ.h" | |
27 | #include "value.h" | |
28 | #include "target.h" | |
29 | #include "gdbthread.h" | |
30 | #include "command.h" | |
31 | #include "gdbcmd.h" | |
4e052eda | 32 | #include "regcache.h" |
5b7f31a4 | 33 | #include "gdb.h" |
02d27625 | 34 | #include "btrace.h" |
c906108c SS |
35 | |
36 | #include <ctype.h> | |
37 | #include <sys/types.h> | |
38 | #include <signal.h> | |
8b93c638 | 39 | #include "ui-out.h" |
683f2885 | 40 | #include "observer.h" |
d4fc5b1e | 41 | #include "annotate.h" |
94cc34af | 42 | #include "cli/cli-decode.h" |
60f98dde | 43 | #include "gdb_regex.h" |
aea5b279 | 44 | #include "cli/cli-utils.h" |
be34f849 | 45 | #include "continuations.h" |
94cc34af | 46 | |
c378eb4e | 47 | /* Definition of struct thread_info exported to gdbthread.h. */ |
c906108c | 48 | |
c378eb4e | 49 | /* Prototypes for exported functions. */ |
c906108c | 50 | |
a14ed312 | 51 | void _initialize_thread (void); |
c906108c | 52 | |
c378eb4e | 53 | /* Prototypes for local functions. */ |
c906108c | 54 | |
e5ef252a | 55 | struct thread_info *thread_list = NULL; |
c906108c SS |
56 | static int highest_thread_num; |
57 | ||
b57bacec PA |
58 | /* True if any thread is, or may be executing. We need to track this |
59 | separately because until we fully sync the thread list, we won't | |
60 | know whether the target is fully stopped, even if we see stop | |
61 | events for all known threads, because any of those threads may have | |
62 | spawned new threads we haven't heard of yet. */ | |
63 | static int threads_executing; | |
64 | ||
a14ed312 KB |
65 | static void thread_apply_all_command (char *, int); |
66 | static int thread_alive (struct thread_info *); | |
67 | static void info_threads_command (char *, int); | |
68 | static void thread_apply_command (char *, int); | |
39f77062 | 69 | static void restore_current_thread (ptid_t); |
c906108c | 70 | |
054e8d9e AA |
71 | /* Data to cleanup thread array. */ |
72 | ||
73 | struct thread_array_cleanup | |
74 | { | |
75 | /* Array of thread pointers used to set | |
76 | reference count. */ | |
77 | struct thread_info **tp_array; | |
78 | ||
79 | /* Thread count in the array. */ | |
80 | int count; | |
81 | }; | |
82 | ||
83 | ||
a5321aa4 | 84 | struct thread_info* |
4e1c45ea | 85 | inferior_thread (void) |
8601f500 | 86 | { |
e09875d4 | 87 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
4e1c45ea PA |
88 | gdb_assert (tp); |
89 | return tp; | |
90 | } | |
8601f500 | 91 | |
5b834a0a PA |
92 | /* Delete the breakpoint pointed at by BP_P, if there's one. */ |
93 | ||
94 | static void | |
95 | delete_thread_breakpoint (struct breakpoint **bp_p) | |
4e1c45ea | 96 | { |
5b834a0a | 97 | if (*bp_p != NULL) |
8601f500 | 98 | { |
5b834a0a PA |
99 | delete_breakpoint (*bp_p); |
100 | *bp_p = NULL; | |
8601f500 MS |
101 | } |
102 | } | |
103 | ||
5b834a0a PA |
104 | void |
105 | delete_step_resume_breakpoint (struct thread_info *tp) | |
106 | { | |
107 | if (tp != NULL) | |
108 | delete_thread_breakpoint (&tp->control.step_resume_breakpoint); | |
109 | } | |
110 | ||
186c406b TT |
111 | void |
112 | delete_exception_resume_breakpoint (struct thread_info *tp) | |
113 | { | |
5b834a0a PA |
114 | if (tp != NULL) |
115 | delete_thread_breakpoint (&tp->control.exception_resume_breakpoint); | |
116 | } | |
117 | ||
34b7e8a6 PA |
118 | /* See gdbthread.h. */ |
119 | ||
120 | void | |
121 | delete_single_step_breakpoints (struct thread_info *tp) | |
122 | { | |
123 | if (tp != NULL) | |
124 | delete_thread_breakpoint (&tp->control.single_step_breakpoints); | |
125 | } | |
126 | ||
5b834a0a PA |
127 | /* Delete the breakpoint pointed at by BP_P at the next stop, if |
128 | there's one. */ | |
129 | ||
130 | static void | |
131 | delete_at_next_stop (struct breakpoint **bp) | |
132 | { | |
133 | if (*bp != NULL) | |
186c406b | 134 | { |
5b834a0a PA |
135 | (*bp)->disposition = disp_del_at_next_stop; |
136 | *bp = NULL; | |
186c406b TT |
137 | } |
138 | } | |
139 | ||
34b7e8a6 PA |
140 | /* See gdbthread.h. */ |
141 | ||
142 | int | |
143 | thread_has_single_step_breakpoints_set (struct thread_info *tp) | |
144 | { | |
145 | return tp->control.single_step_breakpoints != NULL; | |
146 | } | |
147 | ||
148 | /* See gdbthread.h. */ | |
149 | ||
150 | int | |
151 | thread_has_single_step_breakpoint_here (struct thread_info *tp, | |
152 | struct address_space *aspace, | |
153 | CORE_ADDR addr) | |
154 | { | |
155 | struct breakpoint *ss_bps = tp->control.single_step_breakpoints; | |
156 | ||
157 | return (ss_bps != NULL | |
158 | && breakpoint_has_location_inserted_here (ss_bps, aspace, addr)); | |
159 | } | |
160 | ||
7c952b6d | 161 | static void |
4f8d22e3 | 162 | clear_thread_inferior_resources (struct thread_info *tp) |
7c952b6d ND |
163 | { |
164 | /* NOTE: this will take care of any left-over step_resume breakpoints, | |
4d8453a5 DJ |
165 | but not any user-specified thread-specific breakpoints. We can not |
166 | delete the breakpoint straight-off, because the inferior might not | |
167 | be stopped at the moment. */ | |
5b834a0a PA |
168 | delete_at_next_stop (&tp->control.step_resume_breakpoint); |
169 | delete_at_next_stop (&tp->control.exception_resume_breakpoint); | |
34b7e8a6 | 170 | delete_at_next_stop (&tp->control.single_step_breakpoints); |
186c406b | 171 | |
f59f708a PA |
172 | delete_longjmp_breakpoint_at_next_stop (tp->num); |
173 | ||
16c381f0 | 174 | bpstat_clear (&tp->control.stop_bpstat); |
95e54da7 | 175 | |
02d27625 MM |
176 | btrace_teardown (tp); |
177 | ||
fa4cd53f PA |
178 | do_all_intermediate_continuations_thread (tp, 1); |
179 | do_all_continuations_thread (tp, 1); | |
4f8d22e3 PA |
180 | } |
181 | ||
182 | static void | |
183 | free_thread (struct thread_info *tp) | |
184 | { | |
fe978cb0 | 185 | if (tp->priv) |
dc146f7c VP |
186 | { |
187 | if (tp->private_dtor) | |
fe978cb0 | 188 | tp->private_dtor (tp->priv); |
dc146f7c | 189 | else |
fe978cb0 | 190 | xfree (tp->priv); |
dc146f7c | 191 | } |
7c952b6d | 192 | |
4694da01 | 193 | xfree (tp->name); |
b8c9b27d | 194 | xfree (tp); |
7c952b6d ND |
195 | } |
196 | ||
c906108c | 197 | void |
fba45db2 | 198 | init_thread_list (void) |
c906108c SS |
199 | { |
200 | struct thread_info *tp, *tpnext; | |
201 | ||
7c952b6d | 202 | highest_thread_num = 0; |
8ea051c5 | 203 | |
c906108c SS |
204 | if (!thread_list) |
205 | return; | |
206 | ||
207 | for (tp = thread_list; tp; tp = tpnext) | |
208 | { | |
209 | tpnext = tp->next; | |
7c952b6d | 210 | free_thread (tp); |
c906108c SS |
211 | } |
212 | ||
213 | thread_list = NULL; | |
b57bacec | 214 | threads_executing = 0; |
c906108c SS |
215 | } |
216 | ||
e58b0e63 PA |
217 | /* Allocate a new thread with target id PTID and add it to the thread |
218 | list. */ | |
219 | ||
220 | static struct thread_info * | |
221 | new_thread (ptid_t ptid) | |
222 | { | |
223 | struct thread_info *tp; | |
224 | ||
225 | tp = xcalloc (1, sizeof (*tp)); | |
226 | ||
227 | tp->ptid = ptid; | |
228 | tp->num = ++highest_thread_num; | |
229 | tp->next = thread_list; | |
230 | thread_list = tp; | |
231 | ||
232 | /* Nothing to follow yet. */ | |
233 | tp->pending_follow.kind = TARGET_WAITKIND_SPURIOUS; | |
30596231 | 234 | tp->state = THREAD_STOPPED; |
e58b0e63 PA |
235 | |
236 | return tp; | |
237 | } | |
238 | ||
0d06e24b | 239 | struct thread_info * |
93815fbf | 240 | add_thread_silent (ptid_t ptid) |
c906108c SS |
241 | { |
242 | struct thread_info *tp; | |
243 | ||
e09875d4 | 244 | tp = find_thread_ptid (ptid); |
4f8d22e3 PA |
245 | if (tp) |
246 | /* Found an old thread with the same id. It has to be dead, | |
247 | otherwise we wouldn't be adding a new thread with the same id. | |
248 | The OS is reusing this id --- delete it, and recreate a new | |
249 | one. */ | |
250 | { | |
251 | /* In addition to deleting the thread, if this is the current | |
dcf4fbde PA |
252 | thread, then we need to take care that delete_thread doesn't |
253 | really delete the thread if it is inferior_ptid. Create a | |
254 | new template thread in the list with an invalid ptid, switch | |
255 | to it, delete the original thread, reset the new thread's | |
256 | ptid, and switch to it. */ | |
4f8d22e3 PA |
257 | |
258 | if (ptid_equal (inferior_ptid, ptid)) | |
259 | { | |
c820c52a | 260 | tp = new_thread (null_ptid); |
dcf4fbde PA |
261 | |
262 | /* Make switch_to_thread not read from the thread. */ | |
30596231 | 263 | tp->state = THREAD_EXITED; |
c820c52a | 264 | switch_to_thread (null_ptid); |
4f8d22e3 PA |
265 | |
266 | /* Now we can delete it. */ | |
267 | delete_thread (ptid); | |
268 | ||
dcf4fbde | 269 | /* Now reset its ptid, and reswitch inferior_ptid to it. */ |
4f8d22e3 | 270 | tp->ptid = ptid; |
30596231 | 271 | tp->state = THREAD_STOPPED; |
4f8d22e3 PA |
272 | switch_to_thread (ptid); |
273 | ||
274 | observer_notify_new_thread (tp); | |
275 | ||
276 | /* All done. */ | |
277 | return tp; | |
278 | } | |
279 | else | |
280 | /* Just go ahead and delete it. */ | |
281 | delete_thread (ptid); | |
282 | } | |
283 | ||
e58b0e63 | 284 | tp = new_thread (ptid); |
cfc01461 VP |
285 | observer_notify_new_thread (tp); |
286 | ||
0d06e24b | 287 | return tp; |
c906108c SS |
288 | } |
289 | ||
93815fbf | 290 | struct thread_info * |
fe978cb0 | 291 | add_thread_with_info (ptid_t ptid, struct private_thread_info *priv) |
93815fbf VP |
292 | { |
293 | struct thread_info *result = add_thread_silent (ptid); | |
294 | ||
fe978cb0 | 295 | result->priv = priv; |
17faa917 | 296 | |
93815fbf | 297 | if (print_thread_events) |
fd532e2e | 298 | printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid)); |
d4fc5b1e NR |
299 | |
300 | annotate_new_thread (); | |
93815fbf VP |
301 | return result; |
302 | } | |
303 | ||
17faa917 DJ |
304 | struct thread_info * |
305 | add_thread (ptid_t ptid) | |
306 | { | |
307 | return add_thread_with_info (ptid, NULL); | |
308 | } | |
309 | ||
c2829269 PA |
310 | /* Add TP to the end of the step-over chain LIST_P. */ |
311 | ||
312 | static void | |
313 | step_over_chain_enqueue (struct thread_info **list_p, struct thread_info *tp) | |
314 | { | |
315 | gdb_assert (tp->step_over_next == NULL); | |
316 | gdb_assert (tp->step_over_prev == NULL); | |
317 | ||
318 | if (*list_p == NULL) | |
319 | { | |
320 | *list_p = tp; | |
321 | tp->step_over_prev = tp->step_over_next = tp; | |
322 | } | |
323 | else | |
324 | { | |
325 | struct thread_info *head = *list_p; | |
326 | struct thread_info *tail = head->step_over_prev; | |
327 | ||
328 | tp->step_over_prev = tail; | |
329 | tp->step_over_next = head; | |
330 | head->step_over_prev = tp; | |
331 | tail->step_over_next = tp; | |
332 | } | |
333 | } | |
334 | ||
335 | /* Remove TP from step-over chain LIST_P. */ | |
336 | ||
337 | static void | |
338 | step_over_chain_remove (struct thread_info **list_p, struct thread_info *tp) | |
339 | { | |
340 | gdb_assert (tp->step_over_next != NULL); | |
341 | gdb_assert (tp->step_over_prev != NULL); | |
342 | ||
343 | if (*list_p == tp) | |
344 | { | |
345 | if (tp == tp->step_over_next) | |
346 | *list_p = NULL; | |
347 | else | |
348 | *list_p = tp->step_over_next; | |
349 | } | |
350 | ||
351 | tp->step_over_prev->step_over_next = tp->step_over_next; | |
352 | tp->step_over_next->step_over_prev = tp->step_over_prev; | |
353 | tp->step_over_prev = tp->step_over_next = NULL; | |
354 | } | |
355 | ||
356 | /* See gdbthread.h. */ | |
357 | ||
358 | struct thread_info * | |
359 | thread_step_over_chain_next (struct thread_info *tp) | |
360 | { | |
361 | struct thread_info *next = tp->step_over_next; | |
362 | ||
363 | return (next == step_over_queue_head ? NULL : next); | |
364 | } | |
365 | ||
366 | /* See gdbthread.h. */ | |
367 | ||
368 | int | |
369 | thread_is_in_step_over_chain (struct thread_info *tp) | |
370 | { | |
371 | return (tp->step_over_next != NULL); | |
372 | } | |
373 | ||
374 | /* See gdbthread.h. */ | |
375 | ||
376 | void | |
377 | thread_step_over_chain_enqueue (struct thread_info *tp) | |
378 | { | |
379 | step_over_chain_enqueue (&step_over_queue_head, tp); | |
380 | } | |
381 | ||
382 | /* See gdbthread.h. */ | |
383 | ||
384 | void | |
385 | thread_step_over_chain_remove (struct thread_info *tp) | |
386 | { | |
387 | step_over_chain_remove (&step_over_queue_head, tp); | |
388 | } | |
389 | ||
5e0b29c1 PA |
390 | /* Delete thread PTID. If SILENT, don't notify the observer of this |
391 | exit. */ | |
392 | static void | |
393 | delete_thread_1 (ptid_t ptid, int silent) | |
c906108c SS |
394 | { |
395 | struct thread_info *tp, *tpprev; | |
396 | ||
397 | tpprev = NULL; | |
398 | ||
399 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) | |
39f77062 | 400 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
401 | break; |
402 | ||
403 | if (!tp) | |
404 | return; | |
405 | ||
c2829269 PA |
406 | /* Dead threads don't need to step-over. Remove from queue. */ |
407 | if (tp->step_over_next != NULL) | |
408 | thread_step_over_chain_remove (tp); | |
409 | ||
4f8d22e3 PA |
410 | /* If this is the current thread, or there's code out there that |
411 | relies on it existing (refcount > 0) we can't delete yet. Mark | |
412 | it as exited, and notify it. */ | |
413 | if (tp->refcount > 0 | |
414 | || ptid_equal (tp->ptid, inferior_ptid)) | |
415 | { | |
30596231 | 416 | if (tp->state != THREAD_EXITED) |
4f8d22e3 | 417 | { |
a07daef3 | 418 | observer_notify_thread_exit (tp, silent); |
4f8d22e3 PA |
419 | |
420 | /* Tag it as exited. */ | |
30596231 | 421 | tp->state = THREAD_EXITED; |
4f8d22e3 PA |
422 | |
423 | /* Clear breakpoints, etc. associated with this thread. */ | |
424 | clear_thread_inferior_resources (tp); | |
425 | } | |
426 | ||
427 | /* Will be really deleted some other time. */ | |
428 | return; | |
429 | } | |
430 | ||
fa4cd53f | 431 | /* Notify thread exit, but only if we haven't already. */ |
30596231 | 432 | if (tp->state != THREAD_EXITED) |
fa4cd53f PA |
433 | observer_notify_thread_exit (tp, silent); |
434 | ||
435 | /* Tag it as exited. */ | |
30596231 | 436 | tp->state = THREAD_EXITED; |
fa4cd53f PA |
437 | clear_thread_inferior_resources (tp); |
438 | ||
c906108c SS |
439 | if (tpprev) |
440 | tpprev->next = tp->next; | |
441 | else | |
442 | thread_list = tp->next; | |
443 | ||
7c952b6d | 444 | free_thread (tp); |
c906108c SS |
445 | } |
446 | ||
4f8d22e3 PA |
447 | /* Delete thread PTID and notify of thread exit. If this is |
448 | inferior_ptid, don't actually delete it, but tag it as exited and | |
449 | do the notification. If PTID is the user selected thread, clear | |
450 | it. */ | |
5e0b29c1 PA |
451 | void |
452 | delete_thread (ptid_t ptid) | |
453 | { | |
454 | delete_thread_1 (ptid, 0 /* not silent */); | |
455 | } | |
456 | ||
457 | void | |
458 | delete_thread_silent (ptid_t ptid) | |
459 | { | |
460 | delete_thread_1 (ptid, 1 /* silent */); | |
461 | } | |
462 | ||
1e92afda | 463 | struct thread_info * |
fba45db2 | 464 | find_thread_id (int num) |
c906108c SS |
465 | { |
466 | struct thread_info *tp; | |
467 | ||
468 | for (tp = thread_list; tp; tp = tp->next) | |
469 | if (tp->num == num) | |
470 | return tp; | |
471 | ||
472 | return NULL; | |
473 | } | |
474 | ||
39f77062 | 475 | /* Find a thread_info by matching PTID. */ |
0d06e24b | 476 | struct thread_info * |
e09875d4 | 477 | find_thread_ptid (ptid_t ptid) |
0d06e24b JM |
478 | { |
479 | struct thread_info *tp; | |
480 | ||
481 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 482 | if (ptid_equal (tp->ptid, ptid)) |
0d06e24b JM |
483 | return tp; |
484 | ||
485 | return NULL; | |
486 | } | |
487 | ||
488 | /* | |
489 | * Thread iterator function. | |
490 | * | |
491 | * Calls a callback function once for each thread, so long as | |
492 | * the callback function returns false. If the callback function | |
493 | * returns true, the iteration will end and the current thread | |
494 | * will be returned. This can be useful for implementing a | |
495 | * search for a thread with arbitrary attributes, or for applying | |
496 | * some operation to every thread. | |
497 | * | |
498 | * FIXME: some of the existing functionality, such as | |
499 | * "Thread apply all", might be rewritten using this functionality. | |
500 | */ | |
501 | ||
502 | struct thread_info * | |
fd118b61 KB |
503 | iterate_over_threads (int (*callback) (struct thread_info *, void *), |
504 | void *data) | |
0d06e24b | 505 | { |
4f8d22e3 | 506 | struct thread_info *tp, *next; |
0d06e24b | 507 | |
4f8d22e3 PA |
508 | for (tp = thread_list; tp; tp = next) |
509 | { | |
510 | next = tp->next; | |
511 | if ((*callback) (tp, data)) | |
512 | return tp; | |
513 | } | |
0d06e24b JM |
514 | |
515 | return NULL; | |
516 | } | |
517 | ||
20874c92 VP |
518 | int |
519 | thread_count (void) | |
520 | { | |
521 | int result = 0; | |
522 | struct thread_info *tp; | |
523 | ||
524 | for (tp = thread_list; tp; tp = tp->next) | |
525 | ++result; | |
526 | ||
527 | return result; | |
528 | } | |
529 | ||
c906108c | 530 | int |
fba45db2 | 531 | valid_thread_id (int num) |
c906108c SS |
532 | { |
533 | struct thread_info *tp; | |
534 | ||
535 | for (tp = thread_list; tp; tp = tp->next) | |
536 | if (tp->num == num) | |
537 | return 1; | |
538 | ||
539 | return 0; | |
540 | } | |
541 | ||
542 | int | |
39f77062 | 543 | pid_to_thread_id (ptid_t ptid) |
c906108c SS |
544 | { |
545 | struct thread_info *tp; | |
546 | ||
547 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 548 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
549 | return tp->num; |
550 | ||
551 | return 0; | |
552 | } | |
553 | ||
39f77062 | 554 | ptid_t |
fba45db2 | 555 | thread_id_to_pid (int num) |
c906108c SS |
556 | { |
557 | struct thread_info *thread = find_thread_id (num); | |
5d502164 | 558 | |
c906108c | 559 | if (thread) |
39f77062 | 560 | return thread->ptid; |
c906108c | 561 | else |
39f77062 | 562 | return pid_to_ptid (-1); |
c906108c SS |
563 | } |
564 | ||
565 | int | |
39f77062 | 566 | in_thread_list (ptid_t ptid) |
c906108c SS |
567 | { |
568 | struct thread_info *tp; | |
569 | ||
570 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 571 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
572 | return 1; |
573 | ||
c378eb4e | 574 | return 0; /* Never heard of 'im. */ |
c906108c | 575 | } |
8926118c | 576 | |
bad34192 PA |
577 | /* Finds the first thread of the inferior given by PID. If PID is -1, |
578 | return the first thread in the list. */ | |
579 | ||
580 | struct thread_info * | |
581 | first_thread_of_process (int pid) | |
582 | { | |
583 | struct thread_info *tp, *ret = NULL; | |
584 | ||
585 | for (tp = thread_list; tp; tp = tp->next) | |
586 | if (pid == -1 || ptid_get_pid (tp->ptid) == pid) | |
587 | if (ret == NULL || tp->num < ret->num) | |
588 | ret = tp; | |
589 | ||
590 | return ret; | |
591 | } | |
592 | ||
2277426b PA |
593 | struct thread_info * |
594 | any_thread_of_process (int pid) | |
595 | { | |
596 | struct thread_info *tp; | |
597 | ||
32990ada PA |
598 | gdb_assert (pid != 0); |
599 | ||
600 | /* Prefer the current thread. */ | |
601 | if (ptid_get_pid (inferior_ptid) == pid) | |
602 | return inferior_thread (); | |
603 | ||
604 | ALL_NON_EXITED_THREADS (tp) | |
2277426b PA |
605 | if (ptid_get_pid (tp->ptid) == pid) |
606 | return tp; | |
607 | ||
608 | return NULL; | |
609 | } | |
610 | ||
6c95b8df PA |
611 | struct thread_info * |
612 | any_live_thread_of_process (int pid) | |
613 | { | |
32990ada | 614 | struct thread_info *curr_tp = NULL; |
6c95b8df | 615 | struct thread_info *tp; |
9941e0c5 | 616 | struct thread_info *tp_executing = NULL; |
6c95b8df | 617 | |
32990ada PA |
618 | gdb_assert (pid != 0); |
619 | ||
620 | /* Prefer the current thread if it's not executing. */ | |
621 | if (ptid_get_pid (inferior_ptid) == pid) | |
622 | { | |
623 | /* If the current thread is dead, forget it. If it's not | |
624 | executing, use it. Otherwise, still choose it (below), but | |
625 | only if no other non-executing thread is found. */ | |
626 | curr_tp = inferior_thread (); | |
627 | if (curr_tp->state == THREAD_EXITED) | |
628 | curr_tp = NULL; | |
629 | else if (!curr_tp->executing) | |
630 | return curr_tp; | |
631 | } | |
632 | ||
633 | ALL_NON_EXITED_THREADS (tp) | |
634 | if (ptid_get_pid (tp->ptid) == pid) | |
6c95b8df | 635 | { |
32990ada | 636 | if (!tp->executing) |
6c95b8df | 637 | return tp; |
32990ada PA |
638 | |
639 | tp_executing = tp; | |
6c95b8df PA |
640 | } |
641 | ||
32990ada PA |
642 | /* If both the current thread and all live threads are executing, |
643 | prefer the current thread. */ | |
644 | if (curr_tp != NULL) | |
645 | return curr_tp; | |
646 | ||
647 | /* Otherwise, just return an executing thread, if any. */ | |
9941e0c5 | 648 | return tp_executing; |
6c95b8df PA |
649 | } |
650 | ||
8b93c638 | 651 | /* Print a list of thread ids currently known, and the total number of |
c378eb4e | 652 | threads. To be used from within catch_errors. */ |
6949171e JJ |
653 | static int |
654 | do_captured_list_thread_ids (struct ui_out *uiout, void *arg) | |
8b93c638 JM |
655 | { |
656 | struct thread_info *tp; | |
657 | int num = 0; | |
3b31d625 | 658 | struct cleanup *cleanup_chain; |
592375cd | 659 | int current_thread = -1; |
8b93c638 | 660 | |
dc146f7c | 661 | update_thread_list (); |
7990a578 | 662 | |
3b31d625 | 663 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "thread-ids"); |
8b93c638 JM |
664 | |
665 | for (tp = thread_list; tp; tp = tp->next) | |
666 | { | |
30596231 | 667 | if (tp->state == THREAD_EXITED) |
4f8d22e3 | 668 | continue; |
592375cd VP |
669 | |
670 | if (ptid_equal (tp->ptid, inferior_ptid)) | |
671 | current_thread = tp->num; | |
672 | ||
8b93c638 JM |
673 | num++; |
674 | ui_out_field_int (uiout, "thread-id", tp->num); | |
675 | } | |
676 | ||
3b31d625 | 677 | do_cleanups (cleanup_chain); |
592375cd VP |
678 | |
679 | if (current_thread != -1) | |
680 | ui_out_field_int (uiout, "current-thread-id", current_thread); | |
8b93c638 JM |
681 | ui_out_field_int (uiout, "number-of-threads", num); |
682 | return GDB_RC_OK; | |
683 | } | |
684 | ||
685 | /* Official gdblib interface function to get a list of thread ids and | |
c378eb4e | 686 | the total number. */ |
8b93c638 | 687 | enum gdb_rc |
ce43223b | 688 | gdb_list_thread_ids (struct ui_out *uiout, char **error_message) |
8b93c638 | 689 | { |
b0b13bb4 DJ |
690 | if (catch_exceptions_with_msg (uiout, do_captured_list_thread_ids, NULL, |
691 | error_message, RETURN_MASK_ALL) < 0) | |
692 | return GDB_RC_FAIL; | |
693 | return GDB_RC_OK; | |
8b93c638 | 694 | } |
c906108c | 695 | |
c378eb4e | 696 | /* Return true if TP is an active thread. */ |
c906108c | 697 | static int |
fba45db2 | 698 | thread_alive (struct thread_info *tp) |
c906108c | 699 | { |
30596231 | 700 | if (tp->state == THREAD_EXITED) |
c906108c | 701 | return 0; |
39f77062 | 702 | if (!target_thread_alive (tp->ptid)) |
4f8d22e3 | 703 | return 0; |
c906108c SS |
704 | return 1; |
705 | } | |
706 | ||
e8032dde PA |
707 | /* See gdbthreads.h. */ |
708 | ||
709 | void | |
fba45db2 | 710 | prune_threads (void) |
c906108c | 711 | { |
8a06aea7 | 712 | struct thread_info *tp, *tmp; |
c906108c | 713 | |
8a06aea7 | 714 | ALL_THREADS_SAFE (tp, tmp) |
c906108c | 715 | { |
c906108c | 716 | if (!thread_alive (tp)) |
39f77062 | 717 | delete_thread (tp->ptid); |
c906108c SS |
718 | } |
719 | } | |
720 | ||
8a06aea7 PA |
721 | /* See gdbthreads.h. */ |
722 | ||
723 | void | |
724 | delete_exited_threads (void) | |
725 | { | |
726 | struct thread_info *tp, *tmp; | |
727 | ||
728 | ALL_THREADS_SAFE (tp, tmp) | |
729 | { | |
730 | if (tp->state == THREAD_EXITED) | |
731 | delete_thread (tp->ptid); | |
732 | } | |
733 | } | |
734 | ||
6c659fc2 SC |
735 | /* Disable storing stack temporaries for the thread whose id is |
736 | stored in DATA. */ | |
737 | ||
738 | static void | |
739 | disable_thread_stack_temporaries (void *data) | |
740 | { | |
741 | ptid_t *pd = data; | |
742 | struct thread_info *tp = find_thread_ptid (*pd); | |
743 | ||
744 | if (tp != NULL) | |
745 | { | |
746 | tp->stack_temporaries_enabled = 0; | |
747 | VEC_free (value_ptr, tp->stack_temporaries); | |
748 | } | |
749 | ||
750 | xfree (pd); | |
751 | } | |
752 | ||
753 | /* Enable storing stack temporaries for thread with id PTID and return a | |
754 | cleanup which can disable and clear the stack temporaries. */ | |
755 | ||
756 | struct cleanup * | |
757 | enable_thread_stack_temporaries (ptid_t ptid) | |
758 | { | |
759 | struct thread_info *tp = find_thread_ptid (ptid); | |
760 | ptid_t *data; | |
761 | struct cleanup *c; | |
762 | ||
763 | gdb_assert (tp != NULL); | |
764 | ||
765 | tp->stack_temporaries_enabled = 1; | |
766 | tp->stack_temporaries = NULL; | |
767 | data = (ptid_t *) xmalloc (sizeof (ptid_t)); | |
768 | *data = ptid; | |
769 | c = make_cleanup (disable_thread_stack_temporaries, data); | |
770 | ||
771 | return c; | |
772 | } | |
773 | ||
774 | /* Return non-zero value if stack temporaies are enabled for the thread | |
775 | with id PTID. */ | |
776 | ||
777 | int | |
778 | thread_stack_temporaries_enabled_p (ptid_t ptid) | |
779 | { | |
780 | struct thread_info *tp = find_thread_ptid (ptid); | |
781 | ||
782 | if (tp == NULL) | |
783 | return 0; | |
784 | else | |
785 | return tp->stack_temporaries_enabled; | |
786 | } | |
787 | ||
788 | /* Push V on to the stack temporaries of the thread with id PTID. */ | |
789 | ||
790 | void | |
791 | push_thread_stack_temporary (ptid_t ptid, struct value *v) | |
792 | { | |
793 | struct thread_info *tp = find_thread_ptid (ptid); | |
794 | ||
795 | gdb_assert (tp != NULL && tp->stack_temporaries_enabled); | |
796 | VEC_safe_push (value_ptr, tp->stack_temporaries, v); | |
797 | } | |
798 | ||
799 | /* Return 1 if VAL is among the stack temporaries of the thread | |
800 | with id PTID. Return 0 otherwise. */ | |
801 | ||
802 | int | |
803 | value_in_thread_stack_temporaries (struct value *val, ptid_t ptid) | |
804 | { | |
805 | struct thread_info *tp = find_thread_ptid (ptid); | |
806 | ||
807 | gdb_assert (tp != NULL && tp->stack_temporaries_enabled); | |
808 | if (!VEC_empty (value_ptr, tp->stack_temporaries)) | |
809 | { | |
810 | struct value *v; | |
811 | int i; | |
812 | ||
813 | for (i = 0; VEC_iterate (value_ptr, tp->stack_temporaries, i, v); i++) | |
814 | if (v == val) | |
815 | return 1; | |
816 | } | |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
821 | /* Return the last of the stack temporaries for thread with id PTID. | |
822 | Return NULL if there are no stack temporaries for the thread. */ | |
823 | ||
824 | struct value * | |
825 | get_last_thread_stack_temporary (ptid_t ptid) | |
826 | { | |
827 | struct value *lastval = NULL; | |
828 | struct thread_info *tp = find_thread_ptid (ptid); | |
829 | ||
830 | gdb_assert (tp != NULL); | |
831 | if (!VEC_empty (value_ptr, tp->stack_temporaries)) | |
832 | lastval = VEC_last (value_ptr, tp->stack_temporaries); | |
833 | ||
834 | return lastval; | |
835 | } | |
836 | ||
5231c1fd PA |
837 | void |
838 | thread_change_ptid (ptid_t old_ptid, ptid_t new_ptid) | |
839 | { | |
82f73884 PA |
840 | struct inferior *inf; |
841 | struct thread_info *tp; | |
842 | ||
843 | /* It can happen that what we knew as the target inferior id | |
844 | changes. E.g, target remote may only discover the remote process | |
845 | pid after adding the inferior to GDB's list. */ | |
c9657e70 | 846 | inf = find_inferior_ptid (old_ptid); |
82f73884 PA |
847 | inf->pid = ptid_get_pid (new_ptid); |
848 | ||
e09875d4 | 849 | tp = find_thread_ptid (old_ptid); |
5231c1fd PA |
850 | tp->ptid = new_ptid; |
851 | ||
852 | observer_notify_thread_ptid_changed (old_ptid, new_ptid); | |
853 | } | |
854 | ||
4d9d9d04 PA |
855 | /* Helper for set_running, that marks one thread either running or |
856 | stopped. */ | |
857 | ||
858 | static int | |
859 | set_running_thread (struct thread_info *tp, int running) | |
860 | { | |
861 | int started = 0; | |
862 | ||
863 | if (running && tp->state == THREAD_STOPPED) | |
864 | started = 1; | |
865 | tp->state = running ? THREAD_RUNNING : THREAD_STOPPED; | |
866 | ||
867 | if (!running) | |
868 | { | |
869 | /* If the thread is now marked stopped, remove it from | |
870 | the step-over queue, so that we don't try to resume | |
871 | it until the user wants it to. */ | |
872 | if (tp->step_over_next != NULL) | |
873 | thread_step_over_chain_remove (tp); | |
874 | } | |
875 | ||
876 | return started; | |
877 | } | |
878 | ||
e1ac3328 VP |
879 | void |
880 | set_running (ptid_t ptid, int running) | |
881 | { | |
882 | struct thread_info *tp; | |
d90e17a7 | 883 | int all = ptid_equal (ptid, minus_one_ptid); |
4d9d9d04 | 884 | int any_started = 0; |
e1ac3328 | 885 | |
e1ac3328 VP |
886 | /* We try not to notify the observer if no thread has actually changed |
887 | the running state -- merely to reduce the number of messages to | |
888 | frontend. Frontend is supposed to handle multiple *running just fine. */ | |
d90e17a7 | 889 | if (all || ptid_is_pid (ptid)) |
e1ac3328 | 890 | { |
e1ac3328 | 891 | for (tp = thread_list; tp; tp = tp->next) |
d90e17a7 PA |
892 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) |
893 | { | |
30596231 | 894 | if (tp->state == THREAD_EXITED) |
d90e17a7 | 895 | continue; |
4d9d9d04 PA |
896 | |
897 | if (set_running_thread (tp, running)) | |
d90e17a7 | 898 | any_started = 1; |
d90e17a7 | 899 | } |
e1ac3328 VP |
900 | } |
901 | else | |
902 | { | |
e09875d4 | 903 | tp = find_thread_ptid (ptid); |
4d9d9d04 | 904 | gdb_assert (tp != NULL); |
30596231 | 905 | gdb_assert (tp->state != THREAD_EXITED); |
4d9d9d04 PA |
906 | if (set_running_thread (tp, running)) |
907 | any_started = 1; | |
4f8d22e3 | 908 | } |
4d9d9d04 PA |
909 | if (any_started) |
910 | observer_notify_target_resumed (ptid); | |
e1ac3328 VP |
911 | } |
912 | ||
4f8d22e3 PA |
913 | static int |
914 | is_thread_state (ptid_t ptid, enum thread_state state) | |
e1ac3328 VP |
915 | { |
916 | struct thread_info *tp; | |
917 | ||
e09875d4 | 918 | tp = find_thread_ptid (ptid); |
e1ac3328 | 919 | gdb_assert (tp); |
30596231 | 920 | return tp->state == state; |
4f8d22e3 PA |
921 | } |
922 | ||
923 | int | |
924 | is_stopped (ptid_t ptid) | |
925 | { | |
4f8d22e3 PA |
926 | return is_thread_state (ptid, THREAD_STOPPED); |
927 | } | |
928 | ||
929 | int | |
930 | is_exited (ptid_t ptid) | |
931 | { | |
4f8d22e3 PA |
932 | return is_thread_state (ptid, THREAD_EXITED); |
933 | } | |
934 | ||
935 | int | |
936 | is_running (ptid_t ptid) | |
937 | { | |
4f8d22e3 | 938 | return is_thread_state (ptid, THREAD_RUNNING); |
e1ac3328 VP |
939 | } |
940 | ||
8ea051c5 PA |
941 | int |
942 | is_executing (ptid_t ptid) | |
943 | { | |
944 | struct thread_info *tp; | |
945 | ||
e09875d4 | 946 | tp = find_thread_ptid (ptid); |
8ea051c5 | 947 | gdb_assert (tp); |
30596231 | 948 | return tp->executing; |
8ea051c5 PA |
949 | } |
950 | ||
951 | void | |
952 | set_executing (ptid_t ptid, int executing) | |
953 | { | |
954 | struct thread_info *tp; | |
d90e17a7 | 955 | int all = ptid_equal (ptid, minus_one_ptid); |
8ea051c5 | 956 | |
d90e17a7 | 957 | if (all || ptid_is_pid (ptid)) |
8ea051c5 PA |
958 | { |
959 | for (tp = thread_list; tp; tp = tp->next) | |
d90e17a7 | 960 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) |
30596231 | 961 | tp->executing = executing; |
8ea051c5 PA |
962 | } |
963 | else | |
964 | { | |
e09875d4 | 965 | tp = find_thread_ptid (ptid); |
8ea051c5 | 966 | gdb_assert (tp); |
30596231 | 967 | tp->executing = executing; |
8ea051c5 | 968 | } |
b57bacec PA |
969 | |
970 | /* It only takes one running thread to spawn more threads.*/ | |
971 | if (executing) | |
972 | threads_executing = 1; | |
973 | /* Only clear the flag if the caller is telling us everything is | |
974 | stopped. */ | |
975 | else if (ptid_equal (minus_one_ptid, ptid)) | |
976 | threads_executing = 0; | |
977 | } | |
978 | ||
979 | /* See gdbthread.h. */ | |
980 | ||
981 | int | |
982 | threads_are_executing (void) | |
983 | { | |
984 | return threads_executing; | |
8ea051c5 PA |
985 | } |
986 | ||
252fbfc8 PA |
987 | void |
988 | set_stop_requested (ptid_t ptid, int stop) | |
989 | { | |
990 | struct thread_info *tp; | |
991 | int all = ptid_equal (ptid, minus_one_ptid); | |
992 | ||
993 | if (all || ptid_is_pid (ptid)) | |
994 | { | |
995 | for (tp = thread_list; tp; tp = tp->next) | |
996 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) | |
997 | tp->stop_requested = stop; | |
998 | } | |
999 | else | |
1000 | { | |
e09875d4 | 1001 | tp = find_thread_ptid (ptid); |
252fbfc8 PA |
1002 | gdb_assert (tp); |
1003 | tp->stop_requested = stop; | |
1004 | } | |
1005 | ||
1006 | /* Call the stop requested observer so other components of GDB can | |
1007 | react to this request. */ | |
1008 | if (stop) | |
1009 | observer_notify_thread_stop_requested (ptid); | |
1010 | } | |
1011 | ||
29f49a6a PA |
1012 | void |
1013 | finish_thread_state (ptid_t ptid) | |
1014 | { | |
1015 | struct thread_info *tp; | |
1016 | int all; | |
1017 | int any_started = 0; | |
1018 | ||
1019 | all = ptid_equal (ptid, minus_one_ptid); | |
1020 | ||
1021 | if (all || ptid_is_pid (ptid)) | |
1022 | { | |
1023 | for (tp = thread_list; tp; tp = tp->next) | |
1024 | { | |
30596231 | 1025 | if (tp->state == THREAD_EXITED) |
29f49a6a PA |
1026 | continue; |
1027 | if (all || ptid_get_pid (ptid) == ptid_get_pid (tp->ptid)) | |
1028 | { | |
4d9d9d04 | 1029 | if (set_running_thread (tp, tp->executing)) |
29f49a6a | 1030 | any_started = 1; |
29f49a6a PA |
1031 | } |
1032 | } | |
1033 | } | |
1034 | else | |
1035 | { | |
e09875d4 | 1036 | tp = find_thread_ptid (ptid); |
29f49a6a | 1037 | gdb_assert (tp); |
30596231 | 1038 | if (tp->state != THREAD_EXITED) |
29f49a6a | 1039 | { |
4d9d9d04 | 1040 | if (set_running_thread (tp, tp->executing)) |
29f49a6a | 1041 | any_started = 1; |
29f49a6a PA |
1042 | } |
1043 | } | |
1044 | ||
1045 | if (any_started) | |
1046 | observer_notify_target_resumed (ptid); | |
1047 | } | |
1048 | ||
1049 | void | |
1050 | finish_thread_state_cleanup (void *arg) | |
1051 | { | |
1052 | ptid_t *ptid_p = arg; | |
1053 | ||
1054 | gdb_assert (arg); | |
1055 | ||
1056 | finish_thread_state (*ptid_p); | |
1057 | } | |
1058 | ||
ce4c476a PA |
1059 | int |
1060 | pc_in_thread_step_range (CORE_ADDR pc, struct thread_info *thread) | |
1061 | { | |
1062 | return (pc >= thread->control.step_range_start | |
1063 | && pc < thread->control.step_range_end); | |
1064 | } | |
1065 | ||
8e8901c5 | 1066 | /* Prints the list of threads and their details on UIOUT. |
aea5b279 | 1067 | This is a version of 'info_threads_command' suitable for |
c378eb4e | 1068 | use from MI. |
4f8d22e3 | 1069 | If REQUESTED_THREAD is not -1, it's the GDB id of the thread |
8e8901c5 | 1070 | that should be printed. Otherwise, all threads are |
c378eb4e | 1071 | printed. |
3ee1c036 | 1072 | If PID is not -1, only print threads from the process PID. |
c378eb4e | 1073 | Otherwise, threads from all attached PIDs are printed. |
3ee1c036 VP |
1074 | If both REQUESTED_THREAD and PID are not -1, then the thread |
1075 | is printed if it belongs to the specified process. Otherwise, | |
1076 | an error is raised. */ | |
8e8901c5 | 1077 | void |
aea5b279 | 1078 | print_thread_info (struct ui_out *uiout, char *requested_threads, int pid) |
c906108c SS |
1079 | { |
1080 | struct thread_info *tp; | |
39f77062 | 1081 | ptid_t current_ptid; |
99b3d574 | 1082 | struct cleanup *old_chain; |
4694da01 | 1083 | char *extra_info, *name, *target_id; |
8e8901c5 | 1084 | int current_thread = -1; |
c906108c | 1085 | |
dc146f7c | 1086 | update_thread_list (); |
39f77062 | 1087 | current_ptid = inferior_ptid; |
4f8d22e3 PA |
1088 | |
1089 | /* We'll be switching threads temporarily. */ | |
1090 | old_chain = make_cleanup_restore_current_thread (); | |
1091 | ||
a7658b96 TT |
1092 | /* For backward compatibility, we make a list for MI. A table is |
1093 | preferable for the CLI, though, because it shows table | |
1094 | headers. */ | |
1095 | if (ui_out_is_mi_like_p (uiout)) | |
1096 | make_cleanup_ui_out_list_begin_end (uiout, "threads"); | |
1097 | else | |
1098 | { | |
1099 | int n_threads = 0; | |
1100 | ||
1101 | for (tp = thread_list; tp; tp = tp->next) | |
1102 | { | |
aea5b279 | 1103 | if (!number_is_in_list (requested_threads, tp->num)) |
a7658b96 TT |
1104 | continue; |
1105 | ||
dfd4cc63 | 1106 | if (pid != -1 && ptid_get_pid (tp->ptid) != pid) |
a7658b96 TT |
1107 | continue; |
1108 | ||
30596231 | 1109 | if (tp->state == THREAD_EXITED) |
a7658b96 TT |
1110 | continue; |
1111 | ||
1112 | ++n_threads; | |
1113 | } | |
1114 | ||
1115 | if (n_threads == 0) | |
1116 | { | |
aea5b279 | 1117 | if (requested_threads == NULL || *requested_threads == '\0') |
a7658b96 TT |
1118 | ui_out_message (uiout, 0, _("No threads.\n")); |
1119 | else | |
aea5b279 MS |
1120 | ui_out_message (uiout, 0, _("No threads match '%s'.\n"), |
1121 | requested_threads); | |
a7658b96 TT |
1122 | do_cleanups (old_chain); |
1123 | return; | |
1124 | } | |
1125 | ||
4694da01 | 1126 | make_cleanup_ui_out_table_begin_end (uiout, 4, n_threads, "threads"); |
a7658b96 TT |
1127 | |
1128 | ui_out_table_header (uiout, 1, ui_left, "current", ""); | |
1129 | ui_out_table_header (uiout, 4, ui_left, "id", "Id"); | |
1130 | ui_out_table_header (uiout, 17, ui_left, "target-id", "Target Id"); | |
a7658b96 TT |
1131 | ui_out_table_header (uiout, 1, ui_left, "frame", "Frame"); |
1132 | ui_out_table_body (uiout); | |
1133 | } | |
1134 | ||
c906108c SS |
1135 | for (tp = thread_list; tp; tp = tp->next) |
1136 | { | |
8e8901c5 | 1137 | struct cleanup *chain2; |
dc146f7c | 1138 | int core; |
8e8901c5 | 1139 | |
aea5b279 | 1140 | if (!number_is_in_list (requested_threads, tp->num)) |
8e8901c5 VP |
1141 | continue; |
1142 | ||
dfd4cc63 | 1143 | if (pid != -1 && ptid_get_pid (tp->ptid) != pid) |
3ee1c036 | 1144 | { |
aea5b279 | 1145 | if (requested_threads != NULL && *requested_threads != '\0') |
3ee1c036 VP |
1146 | error (_("Requested thread not found in requested process")); |
1147 | continue; | |
1148 | } | |
1149 | ||
4f8d22e3 PA |
1150 | if (ptid_equal (tp->ptid, current_ptid)) |
1151 | current_thread = tp->num; | |
1152 | ||
30596231 | 1153 | if (tp->state == THREAD_EXITED) |
4f8d22e3 PA |
1154 | continue; |
1155 | ||
8e8901c5 VP |
1156 | chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); |
1157 | ||
a7658b96 TT |
1158 | if (ui_out_is_mi_like_p (uiout)) |
1159 | { | |
1160 | /* Compatibility. */ | |
1161 | if (ptid_equal (tp->ptid, current_ptid)) | |
1162 | ui_out_text (uiout, "* "); | |
1163 | else | |
1164 | ui_out_text (uiout, " "); | |
1165 | } | |
c906108c | 1166 | else |
a7658b96 TT |
1167 | { |
1168 | if (ptid_equal (tp->ptid, current_ptid)) | |
1169 | ui_out_field_string (uiout, "current", "*"); | |
1170 | else | |
1171 | ui_out_field_skip (uiout, "current"); | |
1172 | } | |
c906108c | 1173 | |
8e8901c5 | 1174 | ui_out_field_int (uiout, "id", tp->num); |
0d06e24b | 1175 | |
4694da01 TT |
1176 | /* For the CLI, we stuff everything into the target-id field. |
1177 | This is a gross hack to make the output come out looking | |
1178 | correct. The underlying problem here is that ui-out has no | |
1179 | way to specify that a field's space allocation should be | |
1180 | shared by several fields. For MI, we do the right thing | |
1181 | instead. */ | |
1182 | ||
1183 | target_id = target_pid_to_str (tp->ptid); | |
ed406532 | 1184 | extra_info = target_extra_thread_info (tp); |
4694da01 TT |
1185 | name = tp->name ? tp->name : target_thread_name (tp); |
1186 | ||
1187 | if (ui_out_is_mi_like_p (uiout)) | |
8e8901c5 | 1188 | { |
4694da01 TT |
1189 | ui_out_field_string (uiout, "target-id", target_id); |
1190 | if (extra_info) | |
1191 | ui_out_field_string (uiout, "details", extra_info); | |
1192 | if (name) | |
1193 | ui_out_field_string (uiout, "name", name); | |
1194 | } | |
1195 | else | |
1196 | { | |
1197 | struct cleanup *str_cleanup; | |
1198 | char *contents; | |
1199 | ||
1200 | if (extra_info && name) | |
1201 | contents = xstrprintf ("%s \"%s\" (%s)", target_id, | |
1202 | name, extra_info); | |
1203 | else if (extra_info) | |
1204 | contents = xstrprintf ("%s (%s)", target_id, extra_info); | |
1205 | else if (name) | |
1206 | contents = xstrprintf ("%s \"%s\"", target_id, name); | |
1207 | else | |
1208 | contents = xstrdup (target_id); | |
1209 | str_cleanup = make_cleanup (xfree, contents); | |
1210 | ||
1211 | ui_out_field_string (uiout, "target-id", contents); | |
1212 | do_cleanups (str_cleanup); | |
8e8901c5 | 1213 | } |
4f8d22e3 | 1214 | |
30596231 | 1215 | if (tp->state == THREAD_RUNNING) |
94cc34af PA |
1216 | ui_out_text (uiout, "(running)\n"); |
1217 | else | |
1218 | { | |
1219 | /* The switch below puts us at the top of the stack (leaf | |
1220 | frame). */ | |
1221 | switch_to_thread (tp->ptid); | |
1222 | print_stack_frame (get_selected_frame (NULL), | |
1223 | /* For MI output, print frame level. */ | |
1224 | ui_out_is_mi_like_p (uiout), | |
08d72866 | 1225 | LOCATION, 0); |
94cc34af | 1226 | } |
8e8901c5 | 1227 | |
90139f7d VP |
1228 | if (ui_out_is_mi_like_p (uiout)) |
1229 | { | |
1230 | char *state = "stopped"; | |
5d502164 | 1231 | |
30596231 | 1232 | if (tp->state == THREAD_RUNNING) |
90139f7d VP |
1233 | state = "running"; |
1234 | ui_out_field_string (uiout, "state", state); | |
1235 | } | |
1236 | ||
dc146f7c VP |
1237 | core = target_core_of_thread (tp->ptid); |
1238 | if (ui_out_is_mi_like_p (uiout) && core != -1) | |
1239 | ui_out_field_int (uiout, "core", core); | |
1240 | ||
8e8901c5 | 1241 | do_cleanups (chain2); |
c906108c SS |
1242 | } |
1243 | ||
99b3d574 DP |
1244 | /* Restores the current thread and the frame selected before |
1245 | the "info threads" command. */ | |
1246 | do_cleanups (old_chain); | |
c906108c | 1247 | |
aea5b279 | 1248 | if (pid == -1 && requested_threads == NULL) |
8e8901c5 | 1249 | { |
4f8d22e3 | 1250 | gdb_assert (current_thread != -1 |
d729566a PA |
1251 | || !thread_list |
1252 | || ptid_equal (inferior_ptid, null_ptid)); | |
0bcd3e20 | 1253 | if (current_thread != -1 && ui_out_is_mi_like_p (uiout)) |
8e8901c5 | 1254 | ui_out_field_int (uiout, "current-thread-id", current_thread); |
94cc34af | 1255 | |
4f8d22e3 PA |
1256 | if (current_thread != -1 && is_exited (current_ptid)) |
1257 | ui_out_message (uiout, 0, "\n\ | |
1258 | The current thread <Thread ID %d> has terminated. See `help thread'.\n", | |
1259 | current_thread); | |
d729566a PA |
1260 | else if (thread_list |
1261 | && current_thread == -1 | |
1262 | && ptid_equal (current_ptid, null_ptid)) | |
1263 | ui_out_message (uiout, 0, "\n\ | |
1264 | No selected thread. See `help thread'.\n"); | |
c906108c | 1265 | } |
c906108c SS |
1266 | } |
1267 | ||
8e8901c5 VP |
1268 | /* Print information about currently known threads |
1269 | ||
60f98dde MS |
1270 | Optional ARG is a thread id, or list of thread ids. |
1271 | ||
1272 | Note: this has the drawback that it _really_ switches | |
1273 | threads, which frees the frame cache. A no-side | |
1274 | effects info-threads command would be nicer. */ | |
8e8901c5 VP |
1275 | |
1276 | static void | |
1277 | info_threads_command (char *arg, int from_tty) | |
1278 | { | |
79a45e25 | 1279 | print_thread_info (current_uiout, arg, -1); |
8e8901c5 VP |
1280 | } |
1281 | ||
c378eb4e | 1282 | /* Switch from one thread to another. */ |
c906108c | 1283 | |
6a6b96b9 | 1284 | void |
39f77062 | 1285 | switch_to_thread (ptid_t ptid) |
c906108c | 1286 | { |
6c95b8df PA |
1287 | /* Switch the program space as well, if we can infer it from the now |
1288 | current thread. Otherwise, it's up to the caller to select the | |
1289 | space it wants. */ | |
1290 | if (!ptid_equal (ptid, null_ptid)) | |
1291 | { | |
1292 | struct inferior *inf; | |
1293 | ||
c9657e70 | 1294 | inf = find_inferior_ptid (ptid); |
6c95b8df PA |
1295 | gdb_assert (inf != NULL); |
1296 | set_current_program_space (inf->pspace); | |
1297 | set_current_inferior (inf); | |
1298 | } | |
1299 | ||
39f77062 | 1300 | if (ptid_equal (ptid, inferior_ptid)) |
c906108c SS |
1301 | return; |
1302 | ||
39f77062 | 1303 | inferior_ptid = ptid; |
35f196d9 | 1304 | reinit_frame_cache (); |
94cc34af | 1305 | |
4f8d22e3 PA |
1306 | /* We don't check for is_stopped, because we're called at times |
1307 | while in the TARGET_RUNNING state, e.g., while handling an | |
1308 | internal event. */ | |
d729566a PA |
1309 | if (!ptid_equal (inferior_ptid, null_ptid) |
1310 | && !is_exited (ptid) | |
1311 | && !is_executing (ptid)) | |
fb14de7b | 1312 | stop_pc = regcache_read_pc (get_thread_regcache (ptid)); |
94cc34af PA |
1313 | else |
1314 | stop_pc = ~(CORE_ADDR) 0; | |
c906108c SS |
1315 | } |
1316 | ||
1317 | static void | |
39f77062 | 1318 | restore_current_thread (ptid_t ptid) |
c906108c | 1319 | { |
dcf4fbde | 1320 | switch_to_thread (ptid); |
99b3d574 DP |
1321 | } |
1322 | ||
1323 | static void | |
4f8d22e3 | 1324 | restore_selected_frame (struct frame_id a_frame_id, int frame_level) |
99b3d574 | 1325 | { |
4f8d22e3 PA |
1326 | struct frame_info *frame = NULL; |
1327 | int count; | |
1328 | ||
eb8c0621 TT |
1329 | /* This means there was no selected frame. */ |
1330 | if (frame_level == -1) | |
1331 | { | |
1332 | select_frame (NULL); | |
1333 | return; | |
1334 | } | |
1335 | ||
4f8d22e3 PA |
1336 | gdb_assert (frame_level >= 0); |
1337 | ||
1338 | /* Restore by level first, check if the frame id is the same as | |
1339 | expected. If that fails, try restoring by frame id. If that | |
1340 | fails, nothing to do, just warn the user. */ | |
1341 | ||
1342 | count = frame_level; | |
1343 | frame = find_relative_frame (get_current_frame (), &count); | |
1344 | if (count == 0 | |
1345 | && frame != NULL | |
005ca36a JB |
1346 | /* The frame ids must match - either both valid or both outer_frame_id. |
1347 | The latter case is not failsafe, but since it's highly unlikely | |
4f8d22e3 PA |
1348 | the search by level finds the wrong frame, it's 99.9(9)% of |
1349 | the time (for all practical purposes) safe. */ | |
005ca36a | 1350 | && frame_id_eq (get_frame_id (frame), a_frame_id)) |
4f8d22e3 PA |
1351 | { |
1352 | /* Cool, all is fine. */ | |
1353 | select_frame (frame); | |
1354 | return; | |
1355 | } | |
99b3d574 | 1356 | |
4f8d22e3 PA |
1357 | frame = frame_find_by_id (a_frame_id); |
1358 | if (frame != NULL) | |
1359 | { | |
1360 | /* Cool, refound it. */ | |
1361 | select_frame (frame); | |
1362 | return; | |
1363 | } | |
99b3d574 | 1364 | |
0c501536 PA |
1365 | /* Nothing else to do, the frame layout really changed. Select the |
1366 | innermost stack frame. */ | |
1367 | select_frame (get_current_frame ()); | |
1368 | ||
1369 | /* Warn the user. */ | |
79a45e25 | 1370 | if (frame_level > 0 && !ui_out_is_mi_like_p (current_uiout)) |
99b3d574 | 1371 | { |
3e43a32a | 1372 | warning (_("Couldn't restore frame #%d in " |
e0162910 | 1373 | "current thread. Bottom (innermost) frame selected:"), |
4f8d22e3 PA |
1374 | frame_level); |
1375 | /* For MI, we should probably have a notification about | |
1376 | current frame change. But this error is not very | |
1377 | likely, so don't bother for now. */ | |
08d72866 | 1378 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
1379 | } |
1380 | } | |
1381 | ||
e1316e60 PA |
1382 | /* Data used by the cleanup installed by |
1383 | 'make_cleanup_restore_current_thread'. */ | |
1384 | ||
6ecce94d AC |
1385 | struct current_thread_cleanup |
1386 | { | |
e1316e60 PA |
1387 | /* Next in list of currently installed 'struct |
1388 | current_thread_cleanup' cleanups. See | |
1389 | 'current_thread_cleanup_chain' below. */ | |
1390 | struct current_thread_cleanup *next; | |
1391 | ||
39f77062 | 1392 | ptid_t inferior_ptid; |
99b3d574 | 1393 | struct frame_id selected_frame_id; |
4f8d22e3 PA |
1394 | int selected_frame_level; |
1395 | int was_stopped; | |
6c95b8df | 1396 | int inf_id; |
9addecb9 | 1397 | int was_removable; |
6ecce94d AC |
1398 | }; |
1399 | ||
e1316e60 PA |
1400 | /* A chain of currently installed 'struct current_thread_cleanup' |
1401 | cleanups. Restoring the previously selected thread looks up the | |
1402 | old thread in the thread list by ptid. If the thread changes ptid, | |
1403 | we need to update the cleanup's thread structure so the look up | |
1404 | succeeds. */ | |
1405 | static struct current_thread_cleanup *current_thread_cleanup_chain; | |
1406 | ||
1407 | /* A thread_ptid_changed observer. Update all currently installed | |
1408 | current_thread_cleanup cleanups that want to switch back to | |
1409 | OLD_PTID to switch back to NEW_PTID instead. */ | |
1410 | ||
1411 | static void | |
1412 | restore_current_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) | |
1413 | { | |
1414 | struct current_thread_cleanup *it; | |
1415 | ||
1416 | for (it = current_thread_cleanup_chain; it != NULL; it = it->next) | |
1417 | { | |
1418 | if (ptid_equal (it->inferior_ptid, old_ptid)) | |
1419 | it->inferior_ptid = new_ptid; | |
1420 | } | |
1421 | } | |
1422 | ||
6ecce94d AC |
1423 | static void |
1424 | do_restore_current_thread_cleanup (void *arg) | |
1425 | { | |
4f8d22e3 | 1426 | struct thread_info *tp; |
6ecce94d | 1427 | struct current_thread_cleanup *old = arg; |
d729566a | 1428 | |
e09875d4 | 1429 | tp = find_thread_ptid (old->inferior_ptid); |
d729566a PA |
1430 | |
1431 | /* If the previously selected thread belonged to a process that has | |
1432 | in the mean time been deleted (due to normal exit, detach, etc.), | |
1433 | then don't revert back to it, but instead simply drop back to no | |
1434 | thread selected. */ | |
1435 | if (tp | |
c9657e70 | 1436 | && find_inferior_ptid (tp->ptid) != NULL) |
d729566a | 1437 | restore_current_thread (old->inferior_ptid); |
88fc996f | 1438 | else |
6c95b8df PA |
1439 | { |
1440 | restore_current_thread (null_ptid); | |
1441 | set_current_inferior (find_inferior_id (old->inf_id)); | |
1442 | } | |
94cc34af | 1443 | |
4f8d22e3 PA |
1444 | /* The running state of the originally selected thread may have |
1445 | changed, so we have to recheck it here. */ | |
d729566a PA |
1446 | if (!ptid_equal (inferior_ptid, null_ptid) |
1447 | && old->was_stopped | |
4f8d22e3 PA |
1448 | && is_stopped (inferior_ptid) |
1449 | && target_has_registers | |
1450 | && target_has_stack | |
1451 | && target_has_memory) | |
1452 | restore_selected_frame (old->selected_frame_id, | |
1453 | old->selected_frame_level); | |
1454 | } | |
1455 | ||
1456 | static void | |
1457 | restore_current_thread_cleanup_dtor (void *arg) | |
1458 | { | |
1459 | struct current_thread_cleanup *old = arg; | |
1460 | struct thread_info *tp; | |
9addecb9 | 1461 | struct inferior *inf; |
5d502164 | 1462 | |
e1316e60 PA |
1463 | current_thread_cleanup_chain = current_thread_cleanup_chain->next; |
1464 | ||
e09875d4 | 1465 | tp = find_thread_ptid (old->inferior_ptid); |
4f8d22e3 PA |
1466 | if (tp) |
1467 | tp->refcount--; | |
9addecb9 TT |
1468 | inf = find_inferior_id (old->inf_id); |
1469 | if (inf != NULL) | |
1470 | inf->removable = old->was_removable; | |
b8c9b27d | 1471 | xfree (old); |
6ecce94d AC |
1472 | } |
1473 | ||
054e8d9e AA |
1474 | /* Set the thread reference count. */ |
1475 | ||
1476 | static void | |
1477 | set_thread_refcount (void *data) | |
1478 | { | |
1479 | int k; | |
1480 | struct thread_array_cleanup *ta_cleanup = data; | |
1481 | ||
1482 | for (k = 0; k != ta_cleanup->count; k++) | |
1483 | ta_cleanup->tp_array[k]->refcount--; | |
1484 | } | |
1485 | ||
6208b47d | 1486 | struct cleanup * |
4f8d22e3 | 1487 | make_cleanup_restore_current_thread (void) |
6ecce94d | 1488 | { |
4f8d22e3 PA |
1489 | struct thread_info *tp; |
1490 | struct frame_info *frame; | |
1491 | struct current_thread_cleanup *old; | |
1492 | ||
1493 | old = xmalloc (sizeof (struct current_thread_cleanup)); | |
39f77062 | 1494 | old->inferior_ptid = inferior_ptid; |
6c95b8df | 1495 | old->inf_id = current_inferior ()->num; |
9addecb9 | 1496 | old->was_removable = current_inferior ()->removable; |
4f8d22e3 | 1497 | |
e1316e60 PA |
1498 | old->next = current_thread_cleanup_chain; |
1499 | current_thread_cleanup_chain = old; | |
1500 | ||
d729566a PA |
1501 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1502 | { | |
1503 | old->was_stopped = is_stopped (inferior_ptid); | |
1504 | if (old->was_stopped | |
1505 | && target_has_registers | |
1506 | && target_has_stack | |
1507 | && target_has_memory) | |
eb8c0621 TT |
1508 | { |
1509 | /* When processing internal events, there might not be a | |
1510 | selected frame. If we naively call get_selected_frame | |
1511 | here, then we can end up reading debuginfo for the | |
1512 | current frame, but we don't generally need the debuginfo | |
1513 | at this point. */ | |
1514 | frame = get_selected_frame_if_set (); | |
1515 | } | |
d729566a PA |
1516 | else |
1517 | frame = NULL; | |
4f8d22e3 | 1518 | |
d729566a PA |
1519 | old->selected_frame_id = get_frame_id (frame); |
1520 | old->selected_frame_level = frame_relative_level (frame); | |
1521 | ||
e09875d4 | 1522 | tp = find_thread_ptid (inferior_ptid); |
d729566a PA |
1523 | if (tp) |
1524 | tp->refcount++; | |
1525 | } | |
4f8d22e3 | 1526 | |
9addecb9 TT |
1527 | current_inferior ()->removable = 0; |
1528 | ||
4f8d22e3 PA |
1529 | return make_cleanup_dtor (do_restore_current_thread_cleanup, old, |
1530 | restore_current_thread_cleanup_dtor); | |
6ecce94d AC |
1531 | } |
1532 | ||
253828f1 JK |
1533 | /* If non-zero tp_array_compar should sort in ascending order, otherwise in |
1534 | descending order. */ | |
1535 | ||
1536 | static int tp_array_compar_ascending; | |
1537 | ||
1538 | /* Sort an array for struct thread_info pointers by their NUM, order is | |
1539 | determined by TP_ARRAY_COMPAR_ASCENDING. */ | |
1540 | ||
1541 | static int | |
1542 | tp_array_compar (const void *ap_voidp, const void *bp_voidp) | |
1543 | { | |
1544 | const struct thread_info *const *ap = ap_voidp; | |
1545 | const struct thread_info *const *bp = bp_voidp; | |
1546 | ||
1547 | return ((((*ap)->num > (*bp)->num) - ((*ap)->num < (*bp)->num)) | |
1548 | * (tp_array_compar_ascending ? +1 : -1)); | |
1549 | } | |
1550 | ||
c906108c SS |
1551 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
1552 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist | |
1553 | of two numbers seperated by a hyphen. Examples: | |
1554 | ||
c5aa993b JM |
1555 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
1556 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
c378eb4e | 1557 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads. */ |
c906108c SS |
1558 | |
1559 | static void | |
fba45db2 | 1560 | thread_apply_all_command (char *cmd, int from_tty) |
c906108c | 1561 | { |
4f8d22e3 | 1562 | struct cleanup *old_chain; |
e35ce267 | 1563 | char *saved_cmd; |
054e8d9e AA |
1564 | int tc; |
1565 | struct thread_array_cleanup ta_cleanup; | |
c906108c | 1566 | |
253828f1 JK |
1567 | tp_array_compar_ascending = 0; |
1568 | if (cmd != NULL | |
1569 | && check_for_argument (&cmd, "-ascending", strlen ("-ascending"))) | |
1570 | { | |
1571 | cmd = skip_spaces (cmd); | |
1572 | tp_array_compar_ascending = 1; | |
1573 | } | |
1574 | ||
c906108c | 1575 | if (cmd == NULL || *cmd == '\000') |
8a3fe4f8 | 1576 | error (_("Please specify a command following the thread ID list")); |
94cc34af | 1577 | |
dc146f7c | 1578 | update_thread_list (); |
e9d196c5 | 1579 | |
4f8d22e3 PA |
1580 | old_chain = make_cleanup_restore_current_thread (); |
1581 | ||
e35ce267 | 1582 | /* Save a copy of the command in case it is clobbered by |
c378eb4e | 1583 | execute_command. */ |
5b616ba1 | 1584 | saved_cmd = xstrdup (cmd); |
94cc34af | 1585 | make_cleanup (xfree, saved_cmd); |
94cc34af | 1586 | |
a25d8bf9 PA |
1587 | /* Note this includes exited threads. */ |
1588 | tc = thread_count (); | |
1589 | if (tc != 0) | |
054e8d9e AA |
1590 | { |
1591 | struct thread_info **tp_array; | |
1592 | struct thread_info *tp; | |
1593 | int i = 0, k; | |
1594 | ||
1595 | /* Save a copy of the thread_list in case we execute detach | |
1596 | command. */ | |
1597 | tp_array = xmalloc (sizeof (struct thread_info *) * tc); | |
1598 | make_cleanup (xfree, tp_array); | |
054e8d9e | 1599 | |
034f788c | 1600 | ALL_NON_EXITED_THREADS (tp) |
054e8d9e AA |
1601 | { |
1602 | tp_array[i] = tp; | |
1603 | tp->refcount++; | |
1604 | i++; | |
1605 | } | |
a25d8bf9 PA |
1606 | /* Because we skipped exited threads, we may end up with fewer |
1607 | threads in the array than the total count of threads. */ | |
1608 | gdb_assert (i <= tc); | |
054e8d9e | 1609 | |
a25d8bf9 PA |
1610 | if (i != 0) |
1611 | qsort (tp_array, i, sizeof (*tp_array), tp_array_compar); | |
253828f1 | 1612 | |
a25d8bf9 PA |
1613 | ta_cleanup.tp_array = tp_array; |
1614 | ta_cleanup.count = i; | |
054e8d9e AA |
1615 | make_cleanup (set_thread_refcount, &ta_cleanup); |
1616 | ||
1617 | for (k = 0; k != i; k++) | |
1618 | if (thread_alive (tp_array[k])) | |
1619 | { | |
1620 | switch_to_thread (tp_array[k]->ptid); | |
1621 | printf_filtered (_("\nThread %d (%s):\n"), | |
1622 | tp_array[k]->num, | |
1623 | target_pid_to_str (inferior_ptid)); | |
1624 | execute_command (cmd, from_tty); | |
1625 | ||
1626 | /* Restore exact command used previously. */ | |
1627 | strcpy (cmd, saved_cmd); | |
1628 | } | |
1629 | } | |
6ecce94d AC |
1630 | |
1631 | do_cleanups (old_chain); | |
c906108c SS |
1632 | } |
1633 | ||
1634 | static void | |
fba45db2 | 1635 | thread_apply_command (char *tidlist, int from_tty) |
c906108c SS |
1636 | { |
1637 | char *cmd; | |
c906108c | 1638 | struct cleanup *old_chain; |
e35ce267 | 1639 | char *saved_cmd; |
197f0a60 | 1640 | struct get_number_or_range_state state; |
c906108c SS |
1641 | |
1642 | if (tidlist == NULL || *tidlist == '\000') | |
8a3fe4f8 | 1643 | error (_("Please specify a thread ID list")); |
c906108c | 1644 | |
c5aa993b | 1645 | for (cmd = tidlist; *cmd != '\000' && !isalpha (*cmd); cmd++); |
c906108c SS |
1646 | |
1647 | if (*cmd == '\000') | |
8a3fe4f8 | 1648 | error (_("Please specify a command following the thread ID list")); |
c906108c | 1649 | |
e35ce267 | 1650 | /* Save a copy of the command in case it is clobbered by |
c378eb4e | 1651 | execute_command. */ |
5b616ba1 | 1652 | saved_cmd = xstrdup (cmd); |
4f8d22e3 | 1653 | old_chain = make_cleanup (xfree, saved_cmd); |
197f0a60 TT |
1654 | |
1655 | init_number_or_range (&state, tidlist); | |
1656 | while (!state.finished && state.string < cmd) | |
c906108c SS |
1657 | { |
1658 | struct thread_info *tp; | |
65ebfb52 | 1659 | int start; |
c906108c | 1660 | |
197f0a60 | 1661 | start = get_number_or_range (&state); |
c906108c | 1662 | |
65fc9b77 PA |
1663 | make_cleanup_restore_current_thread (); |
1664 | ||
65ebfb52 | 1665 | tp = find_thread_id (start); |
c906108c | 1666 | |
65ebfb52 MS |
1667 | if (!tp) |
1668 | warning (_("Unknown thread %d."), start); | |
1669 | else if (!thread_alive (tp)) | |
1670 | warning (_("Thread %d has terminated."), start); | |
1671 | else | |
1672 | { | |
1673 | switch_to_thread (tp->ptid); | |
4f8d22e3 | 1674 | |
65ebfb52 MS |
1675 | printf_filtered (_("\nThread %d (%s):\n"), tp->num, |
1676 | target_pid_to_str (inferior_ptid)); | |
1677 | execute_command (cmd, from_tty); | |
4f8d22e3 | 1678 | |
65ebfb52 MS |
1679 | /* Restore exact command used previously. */ |
1680 | strcpy (cmd, saved_cmd); | |
c906108c SS |
1681 | } |
1682 | } | |
6ecce94d AC |
1683 | |
1684 | do_cleanups (old_chain); | |
c906108c SS |
1685 | } |
1686 | ||
1687 | /* Switch to the specified thread. Will dispatch off to thread_apply_command | |
1688 | if prefix of arg is `apply'. */ | |
1689 | ||
f0e8c4c5 | 1690 | void |
fba45db2 | 1691 | thread_command (char *tidstr, int from_tty) |
c906108c | 1692 | { |
c906108c SS |
1693 | if (!tidstr) |
1694 | { | |
d729566a PA |
1695 | if (ptid_equal (inferior_ptid, null_ptid)) |
1696 | error (_("No thread selected")); | |
1697 | ||
c906108c | 1698 | if (target_has_stack) |
4f8d22e3 PA |
1699 | { |
1700 | if (is_exited (inferior_ptid)) | |
1701 | printf_filtered (_("[Current thread is %d (%s) (exited)]\n"), | |
1702 | pid_to_thread_id (inferior_ptid), | |
54ba13f7 | 1703 | target_pid_to_str (inferior_ptid)); |
4f8d22e3 PA |
1704 | else |
1705 | printf_filtered (_("[Current thread is %d (%s)]\n"), | |
1706 | pid_to_thread_id (inferior_ptid), | |
54ba13f7 | 1707 | target_pid_to_str (inferior_ptid)); |
4f8d22e3 | 1708 | } |
c906108c | 1709 | else |
8a3fe4f8 | 1710 | error (_("No stack.")); |
c906108c SS |
1711 | return; |
1712 | } | |
c5394b80 | 1713 | |
79a45e25 | 1714 | gdb_thread_select (current_uiout, tidstr, NULL); |
c5394b80 JM |
1715 | } |
1716 | ||
4694da01 TT |
1717 | /* Implementation of `thread name'. */ |
1718 | ||
1719 | static void | |
1720 | thread_name_command (char *arg, int from_tty) | |
1721 | { | |
1722 | struct thread_info *info; | |
1723 | ||
1724 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1725 | error (_("No thread selected")); | |
1726 | ||
529480d0 | 1727 | arg = skip_spaces (arg); |
4694da01 TT |
1728 | |
1729 | info = inferior_thread (); | |
1730 | xfree (info->name); | |
1731 | info->name = arg ? xstrdup (arg) : NULL; | |
1732 | } | |
1733 | ||
60f98dde MS |
1734 | /* Find thread ids with a name, target pid, or extra info matching ARG. */ |
1735 | ||
1736 | static void | |
1737 | thread_find_command (char *arg, int from_tty) | |
1738 | { | |
1739 | struct thread_info *tp; | |
1740 | char *tmp; | |
1741 | unsigned long match = 0; | |
1742 | ||
1743 | if (arg == NULL || *arg == '\0') | |
1744 | error (_("Command requires an argument.")); | |
1745 | ||
1746 | tmp = re_comp (arg); | |
1747 | if (tmp != 0) | |
1748 | error (_("Invalid regexp (%s): %s"), tmp, arg); | |
1749 | ||
1750 | update_thread_list (); | |
1751 | for (tp = thread_list; tp; tp = tp->next) | |
1752 | { | |
1753 | if (tp->name != NULL && re_exec (tp->name)) | |
1754 | { | |
1755 | printf_filtered (_("Thread %d has name '%s'\n"), | |
1756 | tp->num, tp->name); | |
1757 | match++; | |
1758 | } | |
1759 | ||
1760 | tmp = target_thread_name (tp); | |
1761 | if (tmp != NULL && re_exec (tmp)) | |
1762 | { | |
1763 | printf_filtered (_("Thread %d has target name '%s'\n"), | |
1764 | tp->num, tmp); | |
1765 | match++; | |
1766 | } | |
1767 | ||
1768 | tmp = target_pid_to_str (tp->ptid); | |
1769 | if (tmp != NULL && re_exec (tmp)) | |
1770 | { | |
1771 | printf_filtered (_("Thread %d has target id '%s'\n"), | |
1772 | tp->num, tmp); | |
1773 | match++; | |
1774 | } | |
1775 | ||
1776 | tmp = target_extra_thread_info (tp); | |
1777 | if (tmp != NULL && re_exec (tmp)) | |
1778 | { | |
1779 | printf_filtered (_("Thread %d has extra info '%s'\n"), | |
1780 | tp->num, tmp); | |
1781 | match++; | |
1782 | } | |
1783 | } | |
1784 | if (!match) | |
1785 | printf_filtered (_("No threads match '%s'\n"), arg); | |
1786 | } | |
1787 | ||
93815fbf VP |
1788 | /* Print notices when new threads are attached and detached. */ |
1789 | int print_thread_events = 1; | |
1790 | static void | |
1791 | show_print_thread_events (struct ui_file *file, int from_tty, | |
1792 | struct cmd_list_element *c, const char *value) | |
1793 | { | |
3e43a32a MS |
1794 | fprintf_filtered (file, |
1795 | _("Printing of thread events is %s.\n"), | |
93815fbf VP |
1796 | value); |
1797 | } | |
1798 | ||
c5394b80 | 1799 | static int |
6949171e | 1800 | do_captured_thread_select (struct ui_out *uiout, void *tidstr) |
c5394b80 JM |
1801 | { |
1802 | int num; | |
1803 | struct thread_info *tp; | |
1804 | ||
81490ea1 | 1805 | num = value_as_long (parse_and_eval (tidstr)); |
c906108c SS |
1806 | |
1807 | tp = find_thread_id (num); | |
1808 | ||
8b93c638 | 1809 | if (!tp) |
8a3fe4f8 | 1810 | error (_("Thread ID %d not known."), num); |
c906108c SS |
1811 | |
1812 | if (!thread_alive (tp)) | |
8a3fe4f8 | 1813 | error (_("Thread ID %d has terminated."), num); |
c906108c | 1814 | |
dcf4fbde | 1815 | switch_to_thread (tp->ptid); |
c906108c | 1816 | |
db5a7484 NR |
1817 | annotate_thread_changed (); |
1818 | ||
8b93c638 | 1819 | ui_out_text (uiout, "[Switching to thread "); |
39f77062 | 1820 | ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_ptid)); |
8b93c638 | 1821 | ui_out_text (uiout, " ("); |
54ba13f7 | 1822 | ui_out_text (uiout, target_pid_to_str (inferior_ptid)); |
8b93c638 | 1823 | ui_out_text (uiout, ")]"); |
c5394b80 | 1824 | |
4f8d22e3 PA |
1825 | /* Note that we can't reach this with an exited thread, due to the |
1826 | thread_alive check above. */ | |
30596231 | 1827 | if (tp->state == THREAD_RUNNING) |
94cc34af | 1828 | ui_out_text (uiout, "(running)\n"); |
4f8d22e3 | 1829 | else |
98871305 TT |
1830 | { |
1831 | ui_out_text (uiout, "\n"); | |
08d72866 | 1832 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
98871305 | 1833 | } |
4f8d22e3 PA |
1834 | |
1835 | /* Since the current thread may have changed, see if there is any | |
1836 | exited thread we can now delete. */ | |
1837 | prune_threads (); | |
94cc34af | 1838 | |
c5394b80 JM |
1839 | return GDB_RC_OK; |
1840 | } | |
1841 | ||
1842 | enum gdb_rc | |
ce43223b | 1843 | gdb_thread_select (struct ui_out *uiout, char *tidstr, char **error_message) |
c5394b80 | 1844 | { |
b0b13bb4 DJ |
1845 | if (catch_exceptions_with_msg (uiout, do_captured_thread_select, tidstr, |
1846 | error_message, RETURN_MASK_ALL) < 0) | |
1847 | return GDB_RC_FAIL; | |
1848 | return GDB_RC_OK; | |
c906108c SS |
1849 | } |
1850 | ||
b57bacec PA |
1851 | /* Update the 'threads_executing' global based on the threads we know |
1852 | about right now. */ | |
1853 | ||
1854 | static void | |
1855 | update_threads_executing (void) | |
1856 | { | |
1857 | struct thread_info *tp; | |
1858 | ||
1859 | threads_executing = 0; | |
1860 | ALL_NON_EXITED_THREADS (tp) | |
1861 | { | |
1862 | if (tp->executing) | |
1863 | { | |
1864 | threads_executing = 1; | |
1865 | break; | |
1866 | } | |
1867 | } | |
1868 | } | |
1869 | ||
dc146f7c VP |
1870 | void |
1871 | update_thread_list (void) | |
1872 | { | |
e8032dde | 1873 | target_update_thread_list (); |
b57bacec | 1874 | update_threads_executing (); |
dc146f7c VP |
1875 | } |
1876 | ||
6aed2dbc SS |
1877 | /* Return a new value for the selected thread's id. Return a value of 0 if |
1878 | no thread is selected, or no threads exist. */ | |
1879 | ||
1880 | static struct value * | |
22d2b532 SDJ |
1881 | thread_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, |
1882 | void *ignore) | |
6aed2dbc SS |
1883 | { |
1884 | struct thread_info *tp = find_thread_ptid (inferior_ptid); | |
1885 | ||
1886 | return value_from_longest (builtin_type (gdbarch)->builtin_int, | |
1887 | (tp ? tp->num : 0)); | |
1888 | } | |
1889 | ||
c906108c SS |
1890 | /* Commands with a prefix of `thread'. */ |
1891 | struct cmd_list_element *thread_cmd_list = NULL; | |
1892 | ||
22d2b532 SDJ |
1893 | /* Implementation of `thread' variable. */ |
1894 | ||
1895 | static const struct internalvar_funcs thread_funcs = | |
1896 | { | |
1897 | thread_id_make_value, | |
1898 | NULL, | |
1899 | NULL | |
1900 | }; | |
1901 | ||
c906108c | 1902 | void |
fba45db2 | 1903 | _initialize_thread (void) |
c906108c SS |
1904 | { |
1905 | static struct cmd_list_element *thread_apply_list = NULL; | |
c906108c | 1906 | |
60f98dde MS |
1907 | add_info ("threads", info_threads_command, |
1908 | _("Display currently known threads.\n\ | |
1909 | Usage: info threads [ID]...\n\ | |
1910 | Optional arguments are thread IDs with spaces between.\n\ | |
1911 | If no arguments, all threads are displayed.")); | |
c906108c | 1912 | |
d729566a | 1913 | add_prefix_cmd ("thread", class_run, thread_command, _("\ |
1bedd215 AC |
1914 | Use this command to switch between threads.\n\ |
1915 | The new thread ID must be currently known."), | |
d729566a | 1916 | &thread_cmd_list, "thread ", 1, &cmdlist); |
c906108c | 1917 | |
d729566a PA |
1918 | add_prefix_cmd ("apply", class_run, thread_apply_command, |
1919 | _("Apply a command to a list of threads."), | |
1920 | &thread_apply_list, "thread apply ", 1, &thread_cmd_list); | |
c906108c | 1921 | |
d729566a | 1922 | add_cmd ("all", class_run, thread_apply_all_command, |
253828f1 JK |
1923 | _("\ |
1924 | Apply a command to all threads.\n\ | |
1925 | \n\ | |
1926 | Usage: thread apply all [-ascending] <command>\n\ | |
1927 | -ascending: Call <command> for all threads in ascending order.\n\ | |
1928 | The default is descending order.\ | |
1929 | "), | |
1930 | &thread_apply_list); | |
c906108c | 1931 | |
4694da01 TT |
1932 | add_cmd ("name", class_run, thread_name_command, |
1933 | _("Set the current thread's name.\n\ | |
1934 | Usage: thread name [NAME]\n\ | |
1935 | If NAME is not given, then any existing name is removed."), &thread_cmd_list); | |
1936 | ||
60f98dde MS |
1937 | add_cmd ("find", class_run, thread_find_command, _("\ |
1938 | Find threads that match a regular expression.\n\ | |
1939 | Usage: thread find REGEXP\n\ | |
1940 | Will display thread ids whose name, target ID, or extra info matches REGEXP."), | |
1941 | &thread_cmd_list); | |
1942 | ||
4f45d445 | 1943 | add_com_alias ("t", "thread", class_run, 1); |
93815fbf VP |
1944 | |
1945 | add_setshow_boolean_cmd ("thread-events", no_class, | |
1946 | &print_thread_events, _("\ | |
11c68c47 EZ |
1947 | Set printing of thread events (such as thread start and exit)."), _("\ |
1948 | Show printing of thread events (such as thread start and exit)."), NULL, | |
93815fbf VP |
1949 | NULL, |
1950 | show_print_thread_events, | |
1951 | &setprintlist, &showprintlist); | |
6aed2dbc | 1952 | |
22d2b532 | 1953 | create_internalvar_type_lazy ("_thread", &thread_funcs, NULL); |
e1316e60 PA |
1954 | |
1955 | observer_attach_thread_ptid_changed (restore_current_thread_ptid_changed); | |
c906108c | 1956 | } |