Commit | Line | Data |
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c906108c | 1 | /* Multi-process/thread control for GDB, the GNU debugger. |
8926118c | 2 | |
11bc5fe4 | 3 | Copyright (C) 1986-2020 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" | |
268a13a5 | 26 | #include "gdbsupport/environ.h" |
c906108c SS |
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" |
02d27625 | 33 | #include "btrace.h" |
c906108c SS |
34 | |
35 | #include <ctype.h> | |
36 | #include <sys/types.h> | |
37 | #include <signal.h> | |
8b93c638 | 38 | #include "ui-out.h" |
76727919 | 39 | #include "observable.h" |
d4fc5b1e | 40 | #include "annotate.h" |
94cc34af | 41 | #include "cli/cli-decode.h" |
6665660a | 42 | #include "cli/cli-option.h" |
60f98dde | 43 | #include "gdb_regex.h" |
aea5b279 | 44 | #include "cli/cli-utils.h" |
243a9253 | 45 | #include "thread-fsm.h" |
5d5658a1 | 46 | #include "tid-parse.h" |
c6609450 | 47 | #include <algorithm> |
268a13a5 | 48 | #include "gdbsupport/gdb_optional.h" |
08036331 | 49 | #include "inline-frame.h" |
5d707134 | 50 | #include "stack.h" |
94cc34af | 51 | |
c378eb4e | 52 | /* Definition of struct thread_info exported to gdbthread.h. */ |
c906108c | 53 | |
c378eb4e | 54 | /* Prototypes for local functions. */ |
c906108c | 55 | |
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 | 65 | static int thread_alive (struct thread_info *); |
c906108c | 66 | |
c6609450 PA |
67 | /* RAII type used to increase / decrease the refcount of each thread |
68 | in a given list of threads. */ | |
054e8d9e | 69 | |
c6609450 | 70 | class scoped_inc_dec_ref |
054e8d9e | 71 | { |
c6609450 PA |
72 | public: |
73 | explicit scoped_inc_dec_ref (const std::vector<thread_info *> &thrds) | |
74 | : m_thrds (thrds) | |
75 | { | |
76 | for (thread_info *thr : m_thrds) | |
77 | thr->incref (); | |
78 | } | |
054e8d9e | 79 | |
c6609450 PA |
80 | ~scoped_inc_dec_ref () |
81 | { | |
82 | for (thread_info *thr : m_thrds) | |
83 | thr->decref (); | |
84 | } | |
85 | ||
86 | private: | |
87 | const std::vector<thread_info *> &m_thrds; | |
054e8d9e AA |
88 | }; |
89 | ||
90 | ||
a5321aa4 | 91 | struct thread_info* |
4e1c45ea | 92 | inferior_thread (void) |
8601f500 | 93 | { |
e09875d4 | 94 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
4e1c45ea PA |
95 | gdb_assert (tp); |
96 | return tp; | |
97 | } | |
8601f500 | 98 | |
5b834a0a PA |
99 | /* Delete the breakpoint pointed at by BP_P, if there's one. */ |
100 | ||
101 | static void | |
102 | delete_thread_breakpoint (struct breakpoint **bp_p) | |
4e1c45ea | 103 | { |
5b834a0a | 104 | if (*bp_p != NULL) |
8601f500 | 105 | { |
5b834a0a PA |
106 | delete_breakpoint (*bp_p); |
107 | *bp_p = NULL; | |
8601f500 MS |
108 | } |
109 | } | |
110 | ||
5b834a0a PA |
111 | void |
112 | delete_step_resume_breakpoint (struct thread_info *tp) | |
113 | { | |
114 | if (tp != NULL) | |
115 | delete_thread_breakpoint (&tp->control.step_resume_breakpoint); | |
116 | } | |
117 | ||
186c406b TT |
118 | void |
119 | delete_exception_resume_breakpoint (struct thread_info *tp) | |
120 | { | |
5b834a0a PA |
121 | if (tp != NULL) |
122 | delete_thread_breakpoint (&tp->control.exception_resume_breakpoint); | |
123 | } | |
124 | ||
34b7e8a6 PA |
125 | /* See gdbthread.h. */ |
126 | ||
127 | void | |
128 | delete_single_step_breakpoints (struct thread_info *tp) | |
129 | { | |
130 | if (tp != NULL) | |
131 | delete_thread_breakpoint (&tp->control.single_step_breakpoints); | |
132 | } | |
133 | ||
5b834a0a PA |
134 | /* Delete the breakpoint pointed at by BP_P at the next stop, if |
135 | there's one. */ | |
136 | ||
137 | static void | |
138 | delete_at_next_stop (struct breakpoint **bp) | |
139 | { | |
140 | if (*bp != NULL) | |
186c406b | 141 | { |
5b834a0a PA |
142 | (*bp)->disposition = disp_del_at_next_stop; |
143 | *bp = NULL; | |
186c406b TT |
144 | } |
145 | } | |
146 | ||
34b7e8a6 PA |
147 | /* See gdbthread.h. */ |
148 | ||
149 | int | |
150 | thread_has_single_step_breakpoints_set (struct thread_info *tp) | |
151 | { | |
152 | return tp->control.single_step_breakpoints != NULL; | |
153 | } | |
154 | ||
155 | /* See gdbthread.h. */ | |
156 | ||
157 | int | |
158 | thread_has_single_step_breakpoint_here (struct thread_info *tp, | |
accd0bcd | 159 | const address_space *aspace, |
34b7e8a6 PA |
160 | CORE_ADDR addr) |
161 | { | |
162 | struct breakpoint *ss_bps = tp->control.single_step_breakpoints; | |
163 | ||
164 | return (ss_bps != NULL | |
165 | && breakpoint_has_location_inserted_here (ss_bps, aspace, addr)); | |
166 | } | |
167 | ||
243a9253 PA |
168 | /* See gdbthread.h. */ |
169 | ||
170 | void | |
171 | thread_cancel_execution_command (struct thread_info *thr) | |
172 | { | |
173 | if (thr->thread_fsm != NULL) | |
174 | { | |
46e3ed7f TT |
175 | thr->thread_fsm->clean_up (thr); |
176 | delete thr->thread_fsm; | |
243a9253 PA |
177 | thr->thread_fsm = NULL; |
178 | } | |
179 | } | |
180 | ||
7c952b6d | 181 | static void |
4f8d22e3 | 182 | clear_thread_inferior_resources (struct thread_info *tp) |
7c952b6d ND |
183 | { |
184 | /* NOTE: this will take care of any left-over step_resume breakpoints, | |
4d8453a5 DJ |
185 | but not any user-specified thread-specific breakpoints. We can not |
186 | delete the breakpoint straight-off, because the inferior might not | |
187 | be stopped at the moment. */ | |
5b834a0a PA |
188 | delete_at_next_stop (&tp->control.step_resume_breakpoint); |
189 | delete_at_next_stop (&tp->control.exception_resume_breakpoint); | |
34b7e8a6 | 190 | delete_at_next_stop (&tp->control.single_step_breakpoints); |
186c406b | 191 | |
5d5658a1 | 192 | delete_longjmp_breakpoint_at_next_stop (tp->global_num); |
f59f708a | 193 | |
16c381f0 | 194 | bpstat_clear (&tp->control.stop_bpstat); |
95e54da7 | 195 | |
02d27625 MM |
196 | btrace_teardown (tp); |
197 | ||
243a9253 | 198 | thread_cancel_execution_command (tp); |
08036331 PA |
199 | |
200 | clear_inline_frame_state (tp->ptid); | |
4f8d22e3 PA |
201 | } |
202 | ||
803bdfe4 YQ |
203 | /* Set the TP's state as exited. */ |
204 | ||
205 | static void | |
206 | set_thread_exited (thread_info *tp, int silent) | |
207 | { | |
208 | /* Dead threads don't need to step-over. Remove from queue. */ | |
209 | if (tp->step_over_next != NULL) | |
66716e78 | 210 | global_thread_step_over_chain_remove (tp); |
803bdfe4 YQ |
211 | |
212 | if (tp->state != THREAD_EXITED) | |
213 | { | |
76727919 | 214 | gdb::observers::thread_exit.notify (tp, silent); |
803bdfe4 YQ |
215 | |
216 | /* Tag it as exited. */ | |
217 | tp->state = THREAD_EXITED; | |
218 | ||
219 | /* Clear breakpoints, etc. associated with this thread. */ | |
220 | clear_thread_inferior_resources (tp); | |
221 | } | |
222 | } | |
223 | ||
c906108c | 224 | void |
fba45db2 | 225 | init_thread_list (void) |
c906108c | 226 | { |
7c952b6d | 227 | highest_thread_num = 0; |
8ea051c5 | 228 | |
08036331 | 229 | for (thread_info *tp : all_threads_safe ()) |
c906108c | 230 | { |
08036331 PA |
231 | inferior *inf = tp->inf; |
232 | ||
803bdfe4 YQ |
233 | if (tp->deletable ()) |
234 | delete tp; | |
235 | else | |
236 | set_thread_exited (tp, 1); | |
c906108c | 237 | |
9cd8b243 | 238 | inf->thread_map.clear(); |
08036331 | 239 | } |
c906108c SS |
240 | } |
241 | ||
5d5658a1 PA |
242 | /* Allocate a new thread of inferior INF with target id PTID and add |
243 | it to the thread list. */ | |
e58b0e63 PA |
244 | |
245 | static struct thread_info * | |
5d5658a1 | 246 | new_thread (struct inferior *inf, ptid_t ptid) |
e58b0e63 | 247 | { |
12316564 | 248 | thread_info *tp = new thread_info (inf, ptid); |
b05b1202 | 249 | |
9cd8b243 SM |
250 | /* A thread with this ptid should not exist yet. */ |
251 | gdb_assert (inf->thread_map.find (ptid) == inf->thread_map.end ()); | |
b05b1202 | 252 | |
9cd8b243 | 253 | inf->thread_map[ptid] = tp; |
e58b0e63 | 254 | |
e58b0e63 PA |
255 | return tp; |
256 | } | |
257 | ||
0d06e24b | 258 | struct thread_info * |
93815fbf | 259 | add_thread_silent (ptid_t ptid) |
c906108c | 260 | { |
5d5658a1 PA |
261 | struct inferior *inf = find_inferior_ptid (ptid); |
262 | gdb_assert (inf != NULL); | |
c906108c | 263 | |
08036331 | 264 | thread_info *tp = find_thread_ptid (inf, ptid); |
4f8d22e3 PA |
265 | if (tp) |
266 | /* Found an old thread with the same id. It has to be dead, | |
267 | otherwise we wouldn't be adding a new thread with the same id. | |
268 | The OS is reusing this id --- delete it, and recreate a new | |
269 | one. */ | |
270 | { | |
271 | /* In addition to deleting the thread, if this is the current | |
dcf4fbde PA |
272 | thread, then we need to take care that delete_thread doesn't |
273 | really delete the thread if it is inferior_ptid. Create a | |
274 | new template thread in the list with an invalid ptid, switch | |
275 | to it, delete the original thread, reset the new thread's | |
276 | ptid, and switch to it. */ | |
4f8d22e3 | 277 | |
9295a5a9 | 278 | if (inferior_ptid == ptid) |
4f8d22e3 | 279 | { |
00431a78 | 280 | thread_info *new_thr = new_thread (inf, null_ptid); |
dcf4fbde PA |
281 | |
282 | /* Make switch_to_thread not read from the thread. */ | |
00431a78 PA |
283 | new_thr->state = THREAD_EXITED; |
284 | switch_to_no_thread (); | |
4f8d22e3 PA |
285 | |
286 | /* Now we can delete it. */ | |
00431a78 | 287 | delete_thread (tp); |
4f8d22e3 | 288 | |
dcf4fbde | 289 | /* Now reset its ptid, and reswitch inferior_ptid to it. */ |
00431a78 PA |
290 | new_thr->ptid = ptid; |
291 | new_thr->state = THREAD_STOPPED; | |
292 | switch_to_thread (new_thr); | |
4f8d22e3 | 293 | |
00431a78 | 294 | gdb::observers::new_thread.notify (new_thr); |
4f8d22e3 PA |
295 | |
296 | /* All done. */ | |
00431a78 | 297 | return new_thr; |
4f8d22e3 PA |
298 | } |
299 | else | |
300 | /* Just go ahead and delete it. */ | |
00431a78 | 301 | delete_thread (tp); |
4f8d22e3 PA |
302 | } |
303 | ||
5d5658a1 | 304 | tp = new_thread (inf, ptid); |
76727919 | 305 | gdb::observers::new_thread.notify (tp); |
cfc01461 | 306 | |
0d06e24b | 307 | return tp; |
c906108c SS |
308 | } |
309 | ||
93815fbf | 310 | struct thread_info * |
7aabaf9d | 311 | add_thread_with_info (ptid_t ptid, private_thread_info *priv) |
93815fbf VP |
312 | { |
313 | struct thread_info *result = add_thread_silent (ptid); | |
314 | ||
7aabaf9d | 315 | result->priv.reset (priv); |
17faa917 | 316 | |
93815fbf | 317 | if (print_thread_events) |
a068643d | 318 | printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid).c_str ()); |
d4fc5b1e NR |
319 | |
320 | annotate_new_thread (); | |
93815fbf VP |
321 | return result; |
322 | } | |
323 | ||
17faa917 DJ |
324 | struct thread_info * |
325 | add_thread (ptid_t ptid) | |
326 | { | |
327 | return add_thread_with_info (ptid, NULL); | |
328 | } | |
329 | ||
7aabaf9d SM |
330 | private_thread_info::~private_thread_info () = default; |
331 | ||
12316564 YQ |
332 | thread_info::thread_info (struct inferior *inf_, ptid_t ptid_) |
333 | : ptid (ptid_), inf (inf_) | |
334 | { | |
335 | gdb_assert (inf_ != NULL); | |
336 | ||
337 | this->global_num = ++highest_thread_num; | |
338 | this->per_inf_num = ++inf_->highest_thread_num; | |
339 | ||
340 | /* Nothing to follow yet. */ | |
341 | memset (&this->pending_follow, 0, sizeof (this->pending_follow)); | |
342 | this->pending_follow.kind = TARGET_WAITKIND_SPURIOUS; | |
343 | this->suspend.waitstatus.kind = TARGET_WAITKIND_IGNORE; | |
344 | } | |
345 | ||
346 | thread_info::~thread_info () | |
347 | { | |
12316564 YQ |
348 | xfree (this->name); |
349 | } | |
350 | ||
08036331 PA |
351 | /* See gdbthread.h. */ |
352 | ||
353 | bool | |
354 | thread_info::deletable () const | |
355 | { | |
356 | /* If this is the current thread, or there's code out there that | |
357 | relies on it existing (refcount > 0) we can't delete yet. */ | |
358 | return refcount () == 0 && ptid != inferior_ptid; | |
359 | } | |
360 | ||
b93d82bc SM |
361 | /* See gdbthread.h. */ |
362 | regcache * | |
363 | thread_info::regcache () | |
364 | { | |
365 | return get_thread_regcache (this); | |
366 | } | |
367 | ||
368 | /* See gdbthread.h. */ | |
369 | gdbarch * | |
370 | thread_info::arch () | |
371 | { | |
372 | return this->regcache ()-> arch (); | |
373 | } | |
374 | ||
c2829269 PA |
375 | /* Add TP to the end of the step-over chain LIST_P. */ |
376 | ||
377 | static void | |
378 | step_over_chain_enqueue (struct thread_info **list_p, struct thread_info *tp) | |
379 | { | |
380 | gdb_assert (tp->step_over_next == NULL); | |
381 | gdb_assert (tp->step_over_prev == NULL); | |
382 | ||
383 | if (*list_p == NULL) | |
384 | { | |
385 | *list_p = tp; | |
386 | tp->step_over_prev = tp->step_over_next = tp; | |
387 | } | |
388 | else | |
389 | { | |
390 | struct thread_info *head = *list_p; | |
391 | struct thread_info *tail = head->step_over_prev; | |
392 | ||
393 | tp->step_over_prev = tail; | |
394 | tp->step_over_next = head; | |
395 | head->step_over_prev = tp; | |
396 | tail->step_over_next = tp; | |
397 | } | |
398 | } | |
399 | ||
b93d82bc | 400 | /* See gdbthread.h. */ |
c2829269 | 401 | |
b93d82bc SM |
402 | void |
403 | thread_step_over_chain_remove (thread_info **list_p, thread_info *tp) | |
c2829269 PA |
404 | { |
405 | gdb_assert (tp->step_over_next != NULL); | |
406 | gdb_assert (tp->step_over_prev != NULL); | |
407 | ||
408 | if (*list_p == tp) | |
409 | { | |
410 | if (tp == tp->step_over_next) | |
411 | *list_p = NULL; | |
412 | else | |
413 | *list_p = tp->step_over_next; | |
414 | } | |
415 | ||
416 | tp->step_over_prev->step_over_next = tp->step_over_next; | |
417 | tp->step_over_next->step_over_prev = tp->step_over_prev; | |
418 | tp->step_over_prev = tp->step_over_next = NULL; | |
419 | } | |
420 | ||
421 | /* See gdbthread.h. */ | |
422 | ||
b93d82bc SM |
423 | void |
424 | global_thread_step_over_chain_remove (thread_info *tp) | |
425 | { | |
426 | thread_step_over_chain_remove (&global_thread_step_over_chain_head, tp); | |
427 | } | |
428 | ||
429 | /* See gdbthread.h. */ | |
430 | ||
431 | thread_info * | |
432 | thread_step_over_chain_next (thread_info *chain_head, thread_info *tp) | |
c2829269 | 433 | { |
b93d82bc | 434 | thread_info *next = tp->step_over_next; |
c2829269 | 435 | |
b93d82bc SM |
436 | return next == chain_head ? NULL : next; |
437 | } | |
438 | ||
439 | /* See gdbthread.h. */ | |
440 | ||
441 | thread_info * | |
442 | global_thread_step_over_chain_next (thread_info *tp) | |
443 | { | |
444 | return thread_step_over_chain_next (global_thread_step_over_chain_head, tp); | |
c2829269 PA |
445 | } |
446 | ||
447 | /* See gdbthread.h. */ | |
448 | ||
449 | int | |
450 | thread_is_in_step_over_chain (struct thread_info *tp) | |
451 | { | |
452 | return (tp->step_over_next != NULL); | |
453 | } | |
454 | ||
455 | /* See gdbthread.h. */ | |
456 | ||
b93d82bc | 457 | int thread_step_over_chain_length (thread_info *tp) |
c2829269 | 458 | { |
b93d82bc SM |
459 | if (tp == nullptr) |
460 | return 0; | |
461 | ||
462 | int num = 1; | |
463 | thread_info *iter = tp->step_over_next; | |
464 | ||
465 | while (iter != tp) | |
466 | { | |
467 | num++; | |
468 | iter = iter->step_over_next; | |
469 | } | |
470 | ||
471 | return num; | |
472 | ||
473 | ||
c2829269 PA |
474 | } |
475 | ||
476 | /* See gdbthread.h. */ | |
477 | ||
478 | void | |
b93d82bc | 479 | global_thread_step_over_chain_enqueue (struct thread_info *tp) |
c2829269 | 480 | { |
b93d82bc SM |
481 | if (debug_infrun) |
482 | fprintf_unfiltered (gdb_stdlog, "enqueueing thread %ld in global step over chain\n", tp->ptid.lwp()); | |
483 | step_over_chain_enqueue (&global_thread_step_over_chain_head, tp); | |
c2829269 PA |
484 | } |
485 | ||
85102364 | 486 | /* Delete the thread referenced by THR. If SILENT, don't notify |
2eab46b1 JB |
487 | the observer of this exit. |
488 | ||
489 | THR must not be NULL or a failed assertion will be raised. */ | |
00431a78 | 490 | |
5e0b29c1 | 491 | static void |
9cd8b243 | 492 | delete_thread_1 (thread_info *thr, bool silent, bool remove) |
c906108c | 493 | { |
2eab46b1 | 494 | gdb_assert (thr != nullptr); |
c906108c | 495 | |
9cd8b243 | 496 | set_thread_exited (thr, silent); |
c906108c | 497 | |
9cd8b243 | 498 | if (!thr->deletable ()) |
8c25b497 | 499 | { |
4f8d22e3 PA |
500 | /* Will be really deleted some other time. */ |
501 | return; | |
502 | } | |
503 | ||
9cd8b243 SM |
504 | if (remove) |
505 | { | |
506 | size_t nr_deleted = thr->inf->thread_map.erase(thr->ptid); | |
507 | gdb_assert (nr_deleted == 1); | |
508 | } | |
c906108c | 509 | |
9cd8b243 | 510 | delete thr; |
c906108c SS |
511 | } |
512 | ||
00431a78 PA |
513 | /* Delete thread THREAD and notify of thread exit. If this is the |
514 | current thread, don't actually delete it, but tag it as exited and | |
515 | do the notification. If this is the user selected thread, clear | |
4f8d22e3 | 516 | it. */ |
00431a78 | 517 | |
5e0b29c1 | 518 | void |
00431a78 | 519 | delete_thread (thread_info *thread) |
5e0b29c1 | 520 | { |
9cd8b243 SM |
521 | delete_thread_1 (thread, false /* not silent */, true /* remove */); |
522 | } | |
523 | ||
524 | void | |
525 | delete_thread_noremove (thread_info *thread) | |
526 | { | |
527 | delete_thread_1 (thread, false /* silent */, false /* don't remove */); | |
5e0b29c1 PA |
528 | } |
529 | ||
530 | void | |
00431a78 | 531 | delete_thread_silent (thread_info *thread) |
5e0b29c1 | 532 | { |
9cd8b243 SM |
533 | delete_thread_1 (thread, true /* silent */, true /* remove */); |
534 | } | |
535 | ||
536 | void | |
537 | delete_thread_silent_noremove (thread_info *thread) | |
538 | { | |
539 | delete_thread_1 (thread, true /* silent */, false /* don't remove */); | |
5e0b29c1 PA |
540 | } |
541 | ||
1e92afda | 542 | struct thread_info * |
5d5658a1 | 543 | find_thread_global_id (int global_id) |
c906108c | 544 | { |
08036331 | 545 | for (thread_info *tp : all_threads ()) |
5d5658a1 PA |
546 | if (tp->global_num == global_id) |
547 | return tp; | |
548 | ||
549 | return NULL; | |
550 | } | |
551 | ||
552 | static struct thread_info * | |
553 | find_thread_id (struct inferior *inf, int thr_num) | |
554 | { | |
08036331 PA |
555 | for (thread_info *tp : inf->threads ()) |
556 | if (tp->per_inf_num == thr_num) | |
c906108c SS |
557 | return tp; |
558 | ||
559 | return NULL; | |
560 | } | |
561 | ||
39f77062 | 562 | /* Find a thread_info by matching PTID. */ |
e04ee09e | 563 | |
0d06e24b | 564 | struct thread_info * |
e09875d4 | 565 | find_thread_ptid (ptid_t ptid) |
0d06e24b | 566 | { |
08036331 PA |
567 | inferior *inf = find_inferior_ptid (ptid); |
568 | if (inf == NULL) | |
569 | return NULL; | |
570 | return find_thread_ptid (inf, ptid); | |
571 | } | |
0d06e24b | 572 | |
08036331 PA |
573 | /* See gdbthread.h. */ |
574 | ||
575 | struct thread_info * | |
576 | find_thread_ptid (inferior *inf, ptid_t ptid) | |
577 | { | |
227c8c56 SM |
578 | auto it = inf->thread_map.find (ptid); |
579 | if (it != inf->thread_map.end ()) | |
580 | return it->second; | |
581 | else | |
582 | return nullptr; | |
0d06e24b JM |
583 | } |
584 | ||
e04ee09e KB |
585 | /* See gdbthread.h. */ |
586 | ||
587 | struct thread_info * | |
50a82723 KB |
588 | find_thread_by_handle (gdb::array_view<const gdb_byte> handle, |
589 | struct inferior *inf) | |
e04ee09e | 590 | { |
50a82723 KB |
591 | return target_thread_handle_to_thread_info (handle.data (), |
592 | handle.size (), | |
593 | inf); | |
e04ee09e KB |
594 | } |
595 | ||
0d06e24b JM |
596 | /* |
597 | * Thread iterator function. | |
598 | * | |
599 | * Calls a callback function once for each thread, so long as | |
600 | * the callback function returns false. If the callback function | |
601 | * returns true, the iteration will end and the current thread | |
ae0eee42 | 602 | * will be returned. This can be useful for implementing a |
0d06e24b JM |
603 | * search for a thread with arbitrary attributes, or for applying |
604 | * some operation to every thread. | |
605 | * | |
ae0eee42 | 606 | * FIXME: some of the existing functionality, such as |
0d06e24b JM |
607 | * "Thread apply all", might be rewritten using this functionality. |
608 | */ | |
609 | ||
610 | struct thread_info * | |
fd118b61 KB |
611 | iterate_over_threads (int (*callback) (struct thread_info *, void *), |
612 | void *data) | |
0d06e24b | 613 | { |
08036331 PA |
614 | for (thread_info *tp : all_threads_safe ()) |
615 | if ((*callback) (tp, data)) | |
616 | return tp; | |
0d06e24b JM |
617 | |
618 | return NULL; | |
619 | } | |
620 | ||
08036331 PA |
621 | /* See gdbthread.h. */ |
622 | ||
623 | bool | |
624 | any_thread_p () | |
625 | { | |
626 | for (thread_info *tp ATTRIBUTE_UNUSED : all_threads ()) | |
627 | return true; | |
628 | return false; | |
629 | } | |
630 | ||
20874c92 VP |
631 | int |
632 | thread_count (void) | |
633 | { | |
08036331 PA |
634 | auto rng = all_threads (); |
635 | return std::distance (rng.begin (), rng.end ()); | |
20874c92 VP |
636 | } |
637 | ||
c6609450 PA |
638 | /* Return the number of non-exited threads in the thread list. */ |
639 | ||
640 | static int | |
641 | live_threads_count (void) | |
642 | { | |
08036331 PA |
643 | auto rng = all_non_exited_threads (); |
644 | return std::distance (rng.begin (), rng.end ()); | |
c6609450 PA |
645 | } |
646 | ||
c906108c | 647 | int |
5d5658a1 | 648 | valid_global_thread_id (int global_id) |
c906108c | 649 | { |
08036331 | 650 | for (thread_info *tp : all_threads ()) |
5d5658a1 | 651 | if (tp->global_num == global_id) |
c906108c SS |
652 | return 1; |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
c906108c | 657 | int |
39f77062 | 658 | in_thread_list (ptid_t ptid) |
c906108c | 659 | { |
08036331 | 660 | return find_thread_ptid (ptid) != nullptr; |
c906108c | 661 | } |
8926118c | 662 | |
00431a78 | 663 | /* Finds the first thread of the inferior. */ |
bad34192 | 664 | |
00431a78 PA |
665 | thread_info * |
666 | first_thread_of_inferior (inferior *inf) | |
bad34192 | 667 | { |
9cd8b243 SM |
668 | gdb_assert (!inf->thread_map.empty ()); |
669 | ||
670 | auto compare_by_per_inf_num = [] (const ptid_thread_map::value_type &a, | |
671 | const ptid_thread_map::value_type &b) | |
672 | { | |
673 | return a.second->per_inf_num < b.second->per_inf_num; | |
674 | }; | |
675 | auto it = std::min_element (inf->thread_map.begin (), inf->thread_map.end (), | |
676 | compare_by_per_inf_num); | |
677 | ||
678 | return it->second; | |
bad34192 PA |
679 | } |
680 | ||
00431a78 PA |
681 | thread_info * |
682 | any_thread_of_inferior (inferior *inf) | |
2277426b | 683 | { |
00431a78 | 684 | gdb_assert (inf->pid != 0); |
32990ada PA |
685 | |
686 | /* Prefer the current thread. */ | |
00431a78 | 687 | if (inf == current_inferior ()) |
32990ada PA |
688 | return inferior_thread (); |
689 | ||
08036331 PA |
690 | for (thread_info *tp : inf->non_exited_threads ()) |
691 | return tp; | |
2277426b PA |
692 | |
693 | return NULL; | |
694 | } | |
695 | ||
00431a78 PA |
696 | thread_info * |
697 | any_live_thread_of_inferior (inferior *inf) | |
6c95b8df | 698 | { |
32990ada | 699 | struct thread_info *curr_tp = NULL; |
9941e0c5 | 700 | struct thread_info *tp_executing = NULL; |
6c95b8df | 701 | |
00431a78 | 702 | gdb_assert (inf != NULL && inf->pid != 0); |
32990ada PA |
703 | |
704 | /* Prefer the current thread if it's not executing. */ | |
00431a78 | 705 | if (inferior_ptid != null_ptid && current_inferior () == inf) |
32990ada PA |
706 | { |
707 | /* If the current thread is dead, forget it. If it's not | |
708 | executing, use it. Otherwise, still choose it (below), but | |
709 | only if no other non-executing thread is found. */ | |
710 | curr_tp = inferior_thread (); | |
711 | if (curr_tp->state == THREAD_EXITED) | |
712 | curr_tp = NULL; | |
713 | else if (!curr_tp->executing) | |
714 | return curr_tp; | |
715 | } | |
716 | ||
08036331 PA |
717 | for (thread_info *tp : inf->non_exited_threads ()) |
718 | { | |
719 | if (!tp->executing) | |
720 | return tp; | |
32990ada | 721 | |
08036331 PA |
722 | tp_executing = tp; |
723 | } | |
6c95b8df | 724 | |
32990ada PA |
725 | /* If both the current thread and all live threads are executing, |
726 | prefer the current thread. */ | |
727 | if (curr_tp != NULL) | |
728 | return curr_tp; | |
729 | ||
730 | /* Otherwise, just return an executing thread, if any. */ | |
9941e0c5 | 731 | return tp_executing; |
6c95b8df PA |
732 | } |
733 | ||
c378eb4e | 734 | /* Return true if TP is an active thread. */ |
c906108c | 735 | static int |
fba45db2 | 736 | thread_alive (struct thread_info *tp) |
c906108c | 737 | { |
30596231 | 738 | if (tp->state == THREAD_EXITED) |
c906108c | 739 | return 0; |
39f77062 | 740 | if (!target_thread_alive (tp->ptid)) |
4f8d22e3 | 741 | return 0; |
c906108c SS |
742 | return 1; |
743 | } | |
744 | ||
e8032dde PA |
745 | /* See gdbthreads.h. */ |
746 | ||
747 | void | |
fba45db2 | 748 | prune_threads (void) |
c906108c | 749 | { |
08036331 PA |
750 | for (thread_info *tp : all_threads_safe ()) |
751 | if (!thread_alive (tp)) | |
752 | delete_thread (tp); | |
c906108c SS |
753 | } |
754 | ||
8a06aea7 PA |
755 | /* See gdbthreads.h. */ |
756 | ||
757 | void | |
758 | delete_exited_threads (void) | |
759 | { | |
08036331 PA |
760 | for (thread_info *tp : all_threads_safe ()) |
761 | if (tp->state == THREAD_EXITED) | |
762 | delete_thread (tp); | |
8a06aea7 PA |
763 | } |
764 | ||
85102364 | 765 | /* Return true value if stack temporaries are enabled for the thread |
00431a78 | 766 | TP. */ |
6c659fc2 | 767 | |
fdf07f3a | 768 | bool |
00431a78 | 769 | thread_stack_temporaries_enabled_p (thread_info *tp) |
6c659fc2 | 770 | { |
6c659fc2 | 771 | if (tp == NULL) |
fdf07f3a | 772 | return false; |
6c659fc2 SC |
773 | else |
774 | return tp->stack_temporaries_enabled; | |
775 | } | |
776 | ||
777 | /* Push V on to the stack temporaries of the thread with id PTID. */ | |
778 | ||
779 | void | |
00431a78 | 780 | push_thread_stack_temporary (thread_info *tp, struct value *v) |
6c659fc2 | 781 | { |
6c659fc2 | 782 | gdb_assert (tp != NULL && tp->stack_temporaries_enabled); |
fdf07f3a | 783 | tp->stack_temporaries.push_back (v); |
6c659fc2 SC |
784 | } |
785 | ||
fdf07f3a | 786 | /* Return true if VAL is among the stack temporaries of the thread |
00431a78 | 787 | TP. Return false otherwise. */ |
6c659fc2 | 788 | |
fdf07f3a | 789 | bool |
00431a78 | 790 | value_in_thread_stack_temporaries (struct value *val, thread_info *tp) |
6c659fc2 | 791 | { |
6c659fc2 | 792 | gdb_assert (tp != NULL && tp->stack_temporaries_enabled); |
52941706 | 793 | for (value *v : tp->stack_temporaries) |
fdf07f3a TT |
794 | if (v == val) |
795 | return true; | |
6c659fc2 | 796 | |
fdf07f3a | 797 | return false; |
6c659fc2 SC |
798 | } |
799 | ||
800 | /* Return the last of the stack temporaries for thread with id PTID. | |
801 | Return NULL if there are no stack temporaries for the thread. */ | |
802 | ||
00431a78 PA |
803 | value * |
804 | get_last_thread_stack_temporary (thread_info *tp) | |
6c659fc2 SC |
805 | { |
806 | struct value *lastval = NULL; | |
6c659fc2 SC |
807 | |
808 | gdb_assert (tp != NULL); | |
fdf07f3a TT |
809 | if (!tp->stack_temporaries.empty ()) |
810 | lastval = tp->stack_temporaries.back (); | |
6c659fc2 SC |
811 | |
812 | return lastval; | |
813 | } | |
814 | ||
5231c1fd PA |
815 | void |
816 | thread_change_ptid (ptid_t old_ptid, ptid_t new_ptid) | |
817 | { | |
82f73884 PA |
818 | struct inferior *inf; |
819 | struct thread_info *tp; | |
820 | ||
821 | /* It can happen that what we knew as the target inferior id | |
822 | changes. E.g, target remote may only discover the remote process | |
823 | pid after adding the inferior to GDB's list. */ | |
c9657e70 | 824 | inf = find_inferior_ptid (old_ptid); |
e99b03dc | 825 | inf->pid = new_ptid.pid (); |
82f73884 | 826 | |
08036331 | 827 | tp = find_thread_ptid (inf, old_ptid); |
9cd8b243 SM |
828 | gdb_assert (tp != nullptr); |
829 | ||
830 | int num_erased = inf->thread_map.erase (old_ptid); | |
831 | gdb_assert (num_erased == 1); | |
832 | ||
5231c1fd | 833 | tp->ptid = new_ptid; |
9cd8b243 | 834 | inf->thread_map[new_ptid] = tp; |
5231c1fd | 835 | |
76727919 | 836 | gdb::observers::thread_ptid_changed.notify (old_ptid, new_ptid); |
5231c1fd PA |
837 | } |
838 | ||
372316f1 PA |
839 | /* See gdbthread.h. */ |
840 | ||
841 | void | |
842 | set_resumed (ptid_t ptid, int resumed) | |
843 | { | |
08036331 PA |
844 | for (thread_info *tp : all_non_exited_threads (ptid)) |
845 | tp->resumed = resumed; | |
372316f1 PA |
846 | } |
847 | ||
4d9d9d04 PA |
848 | /* Helper for set_running, that marks one thread either running or |
849 | stopped. */ | |
850 | ||
851 | static int | |
852 | set_running_thread (struct thread_info *tp, int running) | |
853 | { | |
854 | int started = 0; | |
855 | ||
856 | if (running && tp->state == THREAD_STOPPED) | |
857 | started = 1; | |
858 | tp->state = running ? THREAD_RUNNING : THREAD_STOPPED; | |
859 | ||
860 | if (!running) | |
861 | { | |
862 | /* If the thread is now marked stopped, remove it from | |
863 | the step-over queue, so that we don't try to resume | |
864 | it until the user wants it to. */ | |
865 | if (tp->step_over_next != NULL) | |
66716e78 | 866 | global_thread_step_over_chain_remove (tp); |
4d9d9d04 PA |
867 | } |
868 | ||
869 | return started; | |
870 | } | |
871 | ||
00431a78 PA |
872 | /* See gdbthread.h. */ |
873 | ||
874 | void | |
875 | thread_info::set_running (bool running) | |
876 | { | |
877 | if (set_running_thread (this, running)) | |
878 | gdb::observers::target_resumed.notify (this->ptid); | |
879 | } | |
880 | ||
e1ac3328 VP |
881 | void |
882 | set_running (ptid_t ptid, int running) | |
883 | { | |
08036331 PA |
884 | /* We try not to notify the observer if no thread has actually |
885 | changed the running state -- merely to reduce the number of | |
886 | messages to the MI frontend. A frontend is supposed to handle | |
887 | multiple *running notifications just fine. */ | |
888 | bool any_started = false; | |
e1ac3328 | 889 | |
08036331 PA |
890 | for (thread_info *tp : all_non_exited_threads (ptid)) |
891 | if (set_running_thread (tp, running)) | |
892 | any_started = true; | |
4d9d9d04 | 893 | |
4d9d9d04 | 894 | if (any_started) |
76727919 | 895 | gdb::observers::target_resumed.notify (ptid); |
e1ac3328 VP |
896 | } |
897 | ||
8ea051c5 | 898 | |
f2ffa92b PA |
899 | /* Helper for set_executing. Set's the thread's 'executing' field |
900 | from EXECUTING, and if EXECUTING is true also clears the thread's | |
901 | stop_pc. */ | |
902 | ||
903 | static void | |
904 | set_executing_thread (thread_info *thr, bool executing) | |
905 | { | |
906 | thr->executing = executing; | |
907 | if (executing) | |
908 | thr->suspend.stop_pc = ~(CORE_ADDR) 0; | |
909 | } | |
910 | ||
8ea051c5 PA |
911 | void |
912 | set_executing (ptid_t ptid, int executing) | |
913 | { | |
08036331 PA |
914 | for (thread_info *tp : all_non_exited_threads (ptid)) |
915 | set_executing_thread (tp, executing); | |
8ea051c5 | 916 | |
08036331 | 917 | /* It only takes one running thread to spawn more threads. */ |
b57bacec PA |
918 | if (executing) |
919 | threads_executing = 1; | |
920 | /* Only clear the flag if the caller is telling us everything is | |
921 | stopped. */ | |
9295a5a9 | 922 | else if (minus_one_ptid == ptid) |
b57bacec PA |
923 | threads_executing = 0; |
924 | } | |
925 | ||
926 | /* See gdbthread.h. */ | |
927 | ||
928 | int | |
929 | threads_are_executing (void) | |
930 | { | |
931 | return threads_executing; | |
8ea051c5 PA |
932 | } |
933 | ||
252fbfc8 PA |
934 | void |
935 | set_stop_requested (ptid_t ptid, int stop) | |
936 | { | |
08036331 PA |
937 | for (thread_info *tp : all_non_exited_threads (ptid)) |
938 | tp->stop_requested = stop; | |
252fbfc8 PA |
939 | |
940 | /* Call the stop requested observer so other components of GDB can | |
941 | react to this request. */ | |
942 | if (stop) | |
76727919 | 943 | gdb::observers::thread_stop_requested.notify (ptid); |
252fbfc8 PA |
944 | } |
945 | ||
29f49a6a PA |
946 | void |
947 | finish_thread_state (ptid_t ptid) | |
948 | { | |
08036331 | 949 | bool any_started = false; |
29f49a6a | 950 | |
08036331 PA |
951 | for (thread_info *tp : all_non_exited_threads (ptid)) |
952 | if (set_running_thread (tp, tp->executing)) | |
953 | any_started = true; | |
29f49a6a PA |
954 | |
955 | if (any_started) | |
76727919 | 956 | gdb::observers::target_resumed.notify (ptid); |
29f49a6a PA |
957 | } |
958 | ||
a911d87a PA |
959 | /* See gdbthread.h. */ |
960 | ||
961 | void | |
962 | validate_registers_access (void) | |
963 | { | |
964 | /* No selected thread, no registers. */ | |
9295a5a9 | 965 | if (inferior_ptid == null_ptid) |
a911d87a PA |
966 | error (_("No thread selected.")); |
967 | ||
00431a78 PA |
968 | thread_info *tp = inferior_thread (); |
969 | ||
a911d87a | 970 | /* Don't try to read from a dead thread. */ |
00431a78 | 971 | if (tp->state == THREAD_EXITED) |
a911d87a PA |
972 | error (_("The current thread has terminated")); |
973 | ||
974 | /* ... or from a spinning thread. FIXME: This isn't actually fully | |
975 | correct. It'll allow an user-requested access (e.g., "print $pc" | |
976 | at the prompt) when a thread is not executing for some internal | |
977 | reason, but is marked running from the user's perspective. E.g., | |
978 | the thread is waiting for its turn in the step-over queue. */ | |
00431a78 | 979 | if (tp->executing) |
a911d87a PA |
980 | error (_("Selected thread is running.")); |
981 | } | |
982 | ||
cf77c34e MM |
983 | /* See gdbthread.h. */ |
984 | ||
985 | bool | |
00431a78 | 986 | can_access_registers_thread (thread_info *thread) |
cf77c34e MM |
987 | { |
988 | /* No thread, no registers. */ | |
00431a78 | 989 | if (thread == NULL) |
cf77c34e MM |
990 | return false; |
991 | ||
992 | /* Don't try to read from a dead thread. */ | |
00431a78 | 993 | if (thread->state == THREAD_EXITED) |
cf77c34e MM |
994 | return false; |
995 | ||
996 | /* ... or from a spinning thread. FIXME: see validate_registers_access. */ | |
00431a78 | 997 | if (thread->executing) |
cf77c34e MM |
998 | return false; |
999 | ||
1000 | return true; | |
1001 | } | |
1002 | ||
ce4c476a PA |
1003 | int |
1004 | pc_in_thread_step_range (CORE_ADDR pc, struct thread_info *thread) | |
1005 | { | |
1006 | return (pc >= thread->control.step_range_start | |
1007 | && pc < thread->control.step_range_end); | |
1008 | } | |
1009 | ||
5d5658a1 PA |
1010 | /* Helper for print_thread_info. Returns true if THR should be |
1011 | printed. If REQUESTED_THREADS, a list of GDB ids/ranges, is not | |
1012 | NULL, only print THR if its ID is included in the list. GLOBAL_IDS | |
1013 | is true if REQUESTED_THREADS is list of global IDs, false if a list | |
1014 | of per-inferior thread ids. If PID is not -1, only print THR if it | |
1015 | is a thread from the process PID. Otherwise, threads from all | |
1016 | attached PIDs are printed. If both REQUESTED_THREADS is not NULL | |
1017 | and PID is not -1, then the thread is printed if it belongs to the | |
1018 | specified process. Otherwise, an error is raised. */ | |
1019 | ||
1020 | static int | |
1021 | should_print_thread (const char *requested_threads, int default_inf_num, | |
1022 | int global_ids, int pid, struct thread_info *thr) | |
1023 | { | |
1024 | if (requested_threads != NULL && *requested_threads != '\0') | |
1025 | { | |
1026 | int in_list; | |
1027 | ||
1028 | if (global_ids) | |
1029 | in_list = number_is_in_list (requested_threads, thr->global_num); | |
1030 | else | |
1031 | in_list = tid_is_in_list (requested_threads, default_inf_num, | |
1032 | thr->inf->num, thr->per_inf_num); | |
1033 | if (!in_list) | |
1034 | return 0; | |
1035 | } | |
1036 | ||
e99b03dc | 1037 | if (pid != -1 && thr->ptid.pid () != pid) |
5d5658a1 PA |
1038 | { |
1039 | if (requested_threads != NULL && *requested_threads != '\0') | |
1040 | error (_("Requested thread not found in requested process")); | |
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | if (thr->state == THREAD_EXITED) | |
1045 | return 0; | |
1046 | ||
1047 | return 1; | |
1048 | } | |
1049 | ||
75acb486 PA |
1050 | /* Return the string to display in "info threads"'s "Target Id" |
1051 | column, for TP. */ | |
1052 | ||
1053 | static std::string | |
1054 | thread_target_id_str (thread_info *tp) | |
1055 | { | |
a068643d | 1056 | std::string target_id = target_pid_to_str (tp->ptid); |
75acb486 PA |
1057 | const char *extra_info = target_extra_thread_info (tp); |
1058 | const char *name = tp->name != nullptr ? tp->name : target_thread_name (tp); | |
1059 | ||
1060 | if (extra_info != nullptr && name != nullptr) | |
a068643d TT |
1061 | return string_printf ("%s \"%s\" (%s)", target_id.c_str (), name, |
1062 | extra_info); | |
75acb486 | 1063 | else if (extra_info != nullptr) |
a068643d | 1064 | return string_printf ("%s (%s)", target_id.c_str (), extra_info); |
75acb486 | 1065 | else if (name != nullptr) |
a068643d | 1066 | return string_printf ("%s \"%s\"", target_id.c_str (), name); |
75acb486 PA |
1067 | else |
1068 | return target_id; | |
1069 | } | |
1070 | ||
5d5658a1 PA |
1071 | /* Like print_thread_info, but in addition, GLOBAL_IDS indicates |
1072 | whether REQUESTED_THREADS is a list of global or per-inferior | |
1073 | thread ids. */ | |
1074 | ||
1075 | static void | |
1d12d88f | 1076 | print_thread_info_1 (struct ui_out *uiout, const char *requested_threads, |
5d5658a1 PA |
1077 | int global_ids, int pid, |
1078 | int show_global_ids) | |
c906108c | 1079 | { |
5d5658a1 | 1080 | int default_inf_num = current_inferior ()->num; |
c906108c | 1081 | |
dc146f7c | 1082 | update_thread_list (); |
00431a78 PA |
1083 | |
1084 | /* Whether we saw any thread. */ | |
1085 | bool any_thread = false; | |
1086 | /* Whether the current thread is exited. */ | |
1087 | bool current_exited = false; | |
1088 | ||
1089 | thread_info *current_thread = (inferior_ptid != null_ptid | |
1090 | ? inferior_thread () : NULL); | |
4f8d22e3 | 1091 | |
f8cc3da6 TT |
1092 | { |
1093 | /* For backward compatibility, we make a list for MI. A table is | |
1094 | preferable for the CLI, though, because it shows table | |
1095 | headers. */ | |
1096 | gdb::optional<ui_out_emit_list> list_emitter; | |
1097 | gdb::optional<ui_out_emit_table> table_emitter; | |
1098 | ||
1099 | if (uiout->is_mi_like_p ()) | |
1100 | list_emitter.emplace (uiout, "threads"); | |
1101 | else | |
1102 | { | |
1103 | int n_threads = 0; | |
75acb486 PA |
1104 | /* The width of the "Target Id" column. Grown below to |
1105 | accommodate the largest entry. */ | |
1106 | size_t target_id_col_width = 17; | |
a7658b96 | 1107 | |
08036331 | 1108 | for (thread_info *tp : all_threads ()) |
f8cc3da6 TT |
1109 | { |
1110 | if (!should_print_thread (requested_threads, default_inf_num, | |
1111 | global_ids, pid, tp)) | |
1112 | continue; | |
a7658b96 | 1113 | |
75acb486 PA |
1114 | if (!uiout->is_mi_like_p ()) |
1115 | { | |
1116 | target_id_col_width | |
1117 | = std::max (target_id_col_width, | |
1118 | thread_target_id_str (tp).size ()); | |
1119 | } | |
1120 | ||
f8cc3da6 TT |
1121 | ++n_threads; |
1122 | } | |
a7658b96 | 1123 | |
f8cc3da6 TT |
1124 | if (n_threads == 0) |
1125 | { | |
1126 | if (requested_threads == NULL || *requested_threads == '\0') | |
1127 | uiout->message (_("No threads.\n")); | |
1128 | else | |
1129 | uiout->message (_("No threads match '%s'.\n"), | |
1130 | requested_threads); | |
1131 | return; | |
1132 | } | |
a7658b96 | 1133 | |
0d64823e | 1134 | table_emitter.emplace (uiout, show_global_ids ? 5 : 4, |
f8cc3da6 | 1135 | n_threads, "threads"); |
a7658b96 | 1136 | |
f8cc3da6 | 1137 | uiout->table_header (1, ui_left, "current", ""); |
0d64823e SM |
1138 | uiout->table_header (4, ui_left, "id-in-tg", "Id"); |
1139 | if (show_global_ids) | |
f8cc3da6 | 1140 | uiout->table_header (4, ui_left, "id", "GId"); |
75acb486 PA |
1141 | uiout->table_header (target_id_col_width, ui_left, |
1142 | "target-id", "Target Id"); | |
f8cc3da6 TT |
1143 | uiout->table_header (1, ui_left, "frame", "Frame"); |
1144 | uiout->table_body (); | |
1145 | } | |
a7658b96 | 1146 | |
f8cc3da6 | 1147 | /* We'll be switching threads temporarily. */ |
5ed8105e | 1148 | scoped_restore_current_thread restore_thread; |
8e8901c5 | 1149 | |
08036331 | 1150 | for (inferior *inf : all_inferiors ()) |
9cd8b243 SM |
1151 | { |
1152 | /* Print the threads in per-inferior number order. */ | |
1153 | std::vector<thread_info *> threads_to_print; | |
1154 | ||
1155 | for (thread_info *tp : inf->threads ()) | |
1156 | threads_to_print.push_back (tp); | |
1157 | ||
1158 | std::sort (threads_to_print.begin (), threads_to_print.end (), | |
1159 | [] (thread_info *a, thread_info *b) | |
1160 | { | |
1161 | return a->per_inf_num < b->per_inf_num; | |
1162 | }); | |
1163 | ||
1164 | for (thread_info *tp : threads_to_print) | |
1165 | { | |
1166 | int core; | |
1167 | ||
1168 | any_thread = true; | |
1169 | if (tp == current_thread && tp->state == THREAD_EXITED) | |
1170 | current_exited = true; | |
1171 | ||
1172 | if (!should_print_thread (requested_threads, default_inf_num, | |
1173 | global_ids, pid, tp)) | |
1174 | continue; | |
1175 | ||
1176 | ui_out_emit_tuple tuple_emitter (uiout, NULL); | |
1177 | ||
1178 | if (!uiout->is_mi_like_p ()) | |
1179 | { | |
1180 | if (tp == current_thread) | |
1181 | uiout->field_string ("current", "*"); | |
1182 | else | |
1183 | uiout->field_skip ("current"); | |
1184 | ||
1185 | uiout->field_string ("id-in-tg", print_thread_id (tp)); | |
1186 | } | |
1187 | ||
1188 | if (show_global_ids || uiout->is_mi_like_p ()) | |
1189 | uiout->field_signed ("id", tp->global_num); | |
1190 | ||
1191 | /* For the CLI, we stuff everything into the target-id field. | |
1192 | This is a gross hack to make the output come out looking | |
1193 | correct. The underlying problem here is that ui-out has no | |
1194 | way to specify that a field's space allocation should be | |
1195 | shared by several fields. For MI, we do the right thing | |
1196 | instead. */ | |
1197 | ||
1198 | if (uiout->is_mi_like_p ()) | |
1199 | { | |
1200 | uiout->field_string ("target-id", target_pid_to_str (tp->ptid)); | |
1201 | ||
1202 | const char *extra_info = target_extra_thread_info (tp); | |
1203 | if (extra_info != nullptr) | |
1204 | uiout->field_string ("details", extra_info); | |
1205 | ||
1206 | const char *name = (tp->name != nullptr | |
1207 | ? tp->name | |
1208 | : target_thread_name (tp)); | |
1209 | if (name != NULL) | |
1210 | uiout->field_string ("name", name); | |
1211 | } | |
1212 | else | |
1213 | { | |
1214 | uiout->field_string ("target-id", | |
1215 | thread_target_id_str (tp).c_str ()); | |
1216 | } | |
1217 | ||
1218 | if (tp->state == THREAD_RUNNING) | |
1219 | uiout->text ("(running)\n"); | |
1220 | else | |
1221 | { | |
1222 | /* The switch below puts us at the top of the stack (leaf | |
1223 | frame). */ | |
1224 | switch_to_thread (tp); | |
1225 | print_stack_frame (get_selected_frame (NULL), | |
1226 | /* For MI output, print frame level. */ | |
1227 | uiout->is_mi_like_p (), | |
1228 | LOCATION, 0); | |
1229 | } | |
1230 | ||
1231 | if (uiout->is_mi_like_p ()) | |
1232 | { | |
1233 | const char *state = "stopped"; | |
1234 | ||
1235 | if (tp->state == THREAD_RUNNING) | |
1236 | state = "running"; | |
1237 | uiout->field_string ("state", state); | |
1238 | } | |
1239 | ||
1240 | core = target_core_of_thread (tp->ptid); | |
1241 | if (uiout->is_mi_like_p () && core != -1) | |
1242 | uiout->field_signed ("core", core); | |
1243 | } | |
1244 | } | |
c906108c | 1245 | |
5ed8105e | 1246 | /* This end scope restores the current thread and the frame |
f8cc3da6 TT |
1247 | selected before the "info threads" command, and it finishes the |
1248 | ui-out list or table. */ | |
5ed8105e PA |
1249 | } |
1250 | ||
aea5b279 | 1251 | if (pid == -1 && requested_threads == NULL) |
8e8901c5 | 1252 | { |
00431a78 | 1253 | if (uiout->is_mi_like_p () && inferior_ptid != null_ptid) |
381befee | 1254 | uiout->field_signed ("current-thread-id", current_thread->global_num); |
5d5658a1 | 1255 | |
00431a78 | 1256 | if (inferior_ptid != null_ptid && current_exited) |
112e8700 | 1257 | uiout->message ("\n\ |
5d5658a1 PA |
1258 | The current thread <Thread ID %s> has terminated. See `help thread'.\n", |
1259 | print_thread_id (inferior_thread ())); | |
00431a78 | 1260 | else if (any_thread && inferior_ptid == null_ptid) |
112e8700 | 1261 | uiout->message ("\n\ |
d729566a | 1262 | No selected thread. See `help thread'.\n"); |
c906108c | 1263 | } |
c906108c SS |
1264 | } |
1265 | ||
5d5658a1 | 1266 | /* See gdbthread.h. */ |
8e8901c5 | 1267 | |
5d5658a1 | 1268 | void |
24c54127 TT |
1269 | print_thread_info (struct ui_out *uiout, const char *requested_threads, |
1270 | int pid) | |
5d5658a1 PA |
1271 | { |
1272 | print_thread_info_1 (uiout, requested_threads, 1, pid, 0); | |
1273 | } | |
1274 | ||
54d66006 PA |
1275 | /* The options for the "info threads" command. */ |
1276 | ||
1277 | struct info_threads_opts | |
1278 | { | |
1279 | /* For "-gid". */ | |
491144b5 | 1280 | bool show_global_ids = false; |
54d66006 PA |
1281 | }; |
1282 | ||
1283 | static const gdb::option::option_def info_threads_option_defs[] = { | |
1284 | ||
1285 | gdb::option::flag_option_def<info_threads_opts> { | |
1286 | "gid", | |
1287 | [] (info_threads_opts *opts) { return &opts->show_global_ids; }, | |
1288 | N_("Show global thread IDs."), | |
1289 | }, | |
1290 | ||
1291 | }; | |
1292 | ||
1293 | /* Create an option_def_group for the "info threads" options, with | |
1294 | IT_OPTS as context. */ | |
1295 | ||
1296 | static inline gdb::option::option_def_group | |
1297 | make_info_threads_options_def_group (info_threads_opts *it_opts) | |
1298 | { | |
1299 | return {{info_threads_option_defs}, it_opts}; | |
1300 | } | |
1301 | ||
5d5658a1 | 1302 | /* Implementation of the "info threads" command. |
60f98dde MS |
1303 | |
1304 | Note: this has the drawback that it _really_ switches | |
ae0eee42 PA |
1305 | threads, which frees the frame cache. A no-side |
1306 | effects info-threads command would be nicer. */ | |
8e8901c5 VP |
1307 | |
1308 | static void | |
1d12d88f | 1309 | info_threads_command (const char *arg, int from_tty) |
8e8901c5 | 1310 | { |
54d66006 PA |
1311 | info_threads_opts it_opts; |
1312 | ||
1313 | auto grp = make_info_threads_options_def_group (&it_opts); | |
1314 | gdb::option::process_options | |
1315 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, grp); | |
1316 | ||
1317 | print_thread_info_1 (current_uiout, arg, 0, -1, it_opts.show_global_ids); | |
1318 | } | |
1319 | ||
1320 | /* Completer for the "info threads" command. */ | |
c84f6bbf | 1321 | |
54d66006 PA |
1322 | static void |
1323 | info_threads_command_completer (struct cmd_list_element *ignore, | |
1324 | completion_tracker &tracker, | |
1325 | const char *text, const char *word_ignored) | |
1326 | { | |
1327 | const auto grp = make_info_threads_options_def_group (nullptr); | |
1328 | ||
1329 | if (gdb::option::complete_options | |
1330 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, grp)) | |
1331 | return; | |
1332 | ||
1333 | /* Convenience to let the user know what the option can accept. */ | |
1334 | if (*text == '\0') | |
c84f6bbf | 1335 | { |
54d66006 PA |
1336 | gdb::option::complete_on_all_options (tracker, grp); |
1337 | /* Keep this "ID" in sync with what "help info threads" | |
1338 | says. */ | |
1339 | tracker.add_completion (make_unique_xstrdup ("ID")); | |
c84f6bbf | 1340 | } |
8e8901c5 VP |
1341 | } |
1342 | ||
6efcd9a8 PA |
1343 | /* See gdbthread.h. */ |
1344 | ||
1345 | void | |
1346 | switch_to_thread_no_regs (struct thread_info *thread) | |
1347 | { | |
3a3fd0fd | 1348 | struct inferior *inf = thread->inf; |
6efcd9a8 | 1349 | |
6efcd9a8 PA |
1350 | set_current_program_space (inf->pspace); |
1351 | set_current_inferior (inf); | |
1352 | ||
1353 | inferior_ptid = thread->ptid; | |
6efcd9a8 PA |
1354 | } |
1355 | ||
00431a78 | 1356 | /* See gdbthread.h. */ |
c906108c | 1357 | |
00431a78 | 1358 | void |
3a3fd0fd | 1359 | switch_to_no_thread () |
c906108c | 1360 | { |
3a3fd0fd PA |
1361 | if (inferior_ptid == null_ptid) |
1362 | return; | |
6c95b8df | 1363 | |
3a3fd0fd PA |
1364 | inferior_ptid = null_ptid; |
1365 | reinit_frame_cache (); | |
3a3fd0fd PA |
1366 | } |
1367 | ||
00431a78 | 1368 | /* See gdbthread.h. */ |
6c95b8df | 1369 | |
00431a78 | 1370 | void |
3a3fd0fd PA |
1371 | switch_to_thread (thread_info *thr) |
1372 | { | |
1373 | gdb_assert (thr != NULL); | |
1374 | ||
1375 | if (inferior_ptid == thr->ptid) | |
c906108c SS |
1376 | return; |
1377 | ||
3a3fd0fd PA |
1378 | switch_to_thread_no_regs (thr); |
1379 | ||
35f196d9 | 1380 | reinit_frame_cache (); |
c906108c SS |
1381 | } |
1382 | ||
268a13a5 | 1383 | /* See gdbsupport/common-gdbthread.h. */ |
3a3fd0fd PA |
1384 | |
1385 | void | |
1386 | switch_to_thread (ptid_t ptid) | |
c906108c | 1387 | { |
00431a78 PA |
1388 | thread_info *thr = find_thread_ptid (ptid); |
1389 | switch_to_thread (thr); | |
99b3d574 DP |
1390 | } |
1391 | ||
1392 | static void | |
4f8d22e3 | 1393 | restore_selected_frame (struct frame_id a_frame_id, int frame_level) |
99b3d574 | 1394 | { |
4f8d22e3 PA |
1395 | struct frame_info *frame = NULL; |
1396 | int count; | |
1397 | ||
eb8c0621 TT |
1398 | /* This means there was no selected frame. */ |
1399 | if (frame_level == -1) | |
1400 | { | |
1401 | select_frame (NULL); | |
1402 | return; | |
1403 | } | |
1404 | ||
4f8d22e3 PA |
1405 | gdb_assert (frame_level >= 0); |
1406 | ||
1407 | /* Restore by level first, check if the frame id is the same as | |
1408 | expected. If that fails, try restoring by frame id. If that | |
1409 | fails, nothing to do, just warn the user. */ | |
1410 | ||
1411 | count = frame_level; | |
1412 | frame = find_relative_frame (get_current_frame (), &count); | |
1413 | if (count == 0 | |
1414 | && frame != NULL | |
005ca36a JB |
1415 | /* The frame ids must match - either both valid or both outer_frame_id. |
1416 | The latter case is not failsafe, but since it's highly unlikely | |
4f8d22e3 PA |
1417 | the search by level finds the wrong frame, it's 99.9(9)% of |
1418 | the time (for all practical purposes) safe. */ | |
005ca36a | 1419 | && frame_id_eq (get_frame_id (frame), a_frame_id)) |
4f8d22e3 PA |
1420 | { |
1421 | /* Cool, all is fine. */ | |
1422 | select_frame (frame); | |
1423 | return; | |
1424 | } | |
99b3d574 | 1425 | |
4f8d22e3 PA |
1426 | frame = frame_find_by_id (a_frame_id); |
1427 | if (frame != NULL) | |
1428 | { | |
1429 | /* Cool, refound it. */ | |
1430 | select_frame (frame); | |
1431 | return; | |
1432 | } | |
99b3d574 | 1433 | |
0c501536 PA |
1434 | /* Nothing else to do, the frame layout really changed. Select the |
1435 | innermost stack frame. */ | |
1436 | select_frame (get_current_frame ()); | |
1437 | ||
1438 | /* Warn the user. */ | |
112e8700 | 1439 | if (frame_level > 0 && !current_uiout->is_mi_like_p ()) |
99b3d574 | 1440 | { |
3e43a32a | 1441 | warning (_("Couldn't restore frame #%d in " |
e0162910 | 1442 | "current thread. Bottom (innermost) frame selected:"), |
4f8d22e3 PA |
1443 | frame_level); |
1444 | /* For MI, we should probably have a notification about | |
1445 | current frame change. But this error is not very | |
1446 | likely, so don't bother for now. */ | |
08d72866 | 1447 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
1448 | } |
1449 | } | |
1450 | ||
5ed8105e | 1451 | scoped_restore_current_thread::~scoped_restore_current_thread () |
6ecce94d | 1452 | { |
803bdfe4 YQ |
1453 | /* If an entry of thread_info was previously selected, it won't be |
1454 | deleted because we've increased its refcount. The thread represented | |
1455 | by this thread_info entry may have already exited (due to normal exit, | |
1456 | detach, etc), so the thread_info.state is THREAD_EXITED. */ | |
5ed8105e | 1457 | if (m_thread != NULL |
803bdfe4 YQ |
1458 | /* If the previously selected thread belonged to a process that has |
1459 | in the mean time exited (or killed, detached, etc.), then don't revert | |
1460 | back to it, but instead simply drop back to no thread selected. */ | |
5ed8105e PA |
1461 | && m_inf->pid != 0) |
1462 | switch_to_thread (m_thread); | |
88fc996f | 1463 | else |
6c95b8df | 1464 | { |
3a3fd0fd | 1465 | switch_to_no_thread (); |
5ed8105e | 1466 | set_current_inferior (m_inf); |
6c95b8df | 1467 | } |
94cc34af | 1468 | |
4f8d22e3 PA |
1469 | /* The running state of the originally selected thread may have |
1470 | changed, so we have to recheck it here. */ | |
9295a5a9 | 1471 | if (inferior_ptid != null_ptid |
5ed8105e | 1472 | && m_was_stopped |
00431a78 | 1473 | && m_thread->state == THREAD_STOPPED |
4f8d22e3 PA |
1474 | && target_has_registers |
1475 | && target_has_stack | |
1476 | && target_has_memory) | |
5ed8105e | 1477 | restore_selected_frame (m_selected_frame_id, m_selected_frame_level); |
5d502164 | 1478 | |
5ed8105e PA |
1479 | if (m_thread != NULL) |
1480 | m_thread->decref (); | |
1481 | m_inf->decref (); | |
6ecce94d AC |
1482 | } |
1483 | ||
5ed8105e | 1484 | scoped_restore_current_thread::scoped_restore_current_thread () |
6ecce94d | 1485 | { |
5ed8105e PA |
1486 | m_thread = NULL; |
1487 | m_inf = current_inferior (); | |
4f8d22e3 | 1488 | |
9295a5a9 | 1489 | if (inferior_ptid != null_ptid) |
d729566a | 1490 | { |
00431a78 | 1491 | thread_info *tp = inferior_thread (); |
12316564 YQ |
1492 | struct frame_info *frame; |
1493 | ||
5ed8105e PA |
1494 | m_was_stopped = tp->state == THREAD_STOPPED; |
1495 | if (m_was_stopped | |
d729566a PA |
1496 | && target_has_registers |
1497 | && target_has_stack | |
1498 | && target_has_memory) | |
eb8c0621 TT |
1499 | { |
1500 | /* When processing internal events, there might not be a | |
1501 | selected frame. If we naively call get_selected_frame | |
1502 | here, then we can end up reading debuginfo for the | |
1503 | current frame, but we don't generally need the debuginfo | |
1504 | at this point. */ | |
1505 | frame = get_selected_frame_if_set (); | |
1506 | } | |
d729566a PA |
1507 | else |
1508 | frame = NULL; | |
4f8d22e3 | 1509 | |
5ed8105e PA |
1510 | m_selected_frame_id = get_frame_id (frame); |
1511 | m_selected_frame_level = frame_relative_level (frame); | |
d729566a | 1512 | |
f6223dbb | 1513 | tp->incref (); |
5ed8105e | 1514 | m_thread = tp; |
d729566a | 1515 | } |
4f8d22e3 | 1516 | |
5ed8105e | 1517 | m_inf->incref (); |
6ecce94d AC |
1518 | } |
1519 | ||
43792cf0 PA |
1520 | /* See gdbthread.h. */ |
1521 | ||
f303dbd6 PA |
1522 | int |
1523 | show_thread_that_caused_stop (void) | |
1524 | { | |
1525 | return highest_thread_num > 1; | |
1526 | } | |
1527 | ||
1528 | /* See gdbthread.h. */ | |
1529 | ||
5d5658a1 PA |
1530 | int |
1531 | show_inferior_qualified_tids (void) | |
1532 | { | |
1533 | return (inferior_list->next != NULL || inferior_list->num != 1); | |
1534 | } | |
1535 | ||
1536 | /* See gdbthread.h. */ | |
1537 | ||
43792cf0 PA |
1538 | const char * |
1539 | print_thread_id (struct thread_info *thr) | |
1540 | { | |
1541 | char *s = get_print_cell (); | |
1542 | ||
5d5658a1 PA |
1543 | if (show_inferior_qualified_tids ()) |
1544 | xsnprintf (s, PRINT_CELL_SIZE, "%d.%d", thr->inf->num, thr->per_inf_num); | |
1545 | else | |
1546 | xsnprintf (s, PRINT_CELL_SIZE, "%d", thr->per_inf_num); | |
43792cf0 PA |
1547 | return s; |
1548 | } | |
1549 | ||
6665660a PA |
1550 | /* Sort an array of struct thread_info pointers by thread ID (first by |
1551 | inferior number, and then by per-inferior thread number). Sorts in | |
1552 | ascending order. */ | |
253828f1 | 1553 | |
6665660a PA |
1554 | static bool |
1555 | tp_array_compar_ascending (const thread_info *a, const thread_info *b) | |
1556 | { | |
1557 | if (a->inf->num != b->inf->num) | |
1558 | return a->inf->num < b->inf->num; | |
1559 | ||
1560 | return (a->per_inf_num < b->per_inf_num); | |
1561 | } | |
253828f1 | 1562 | |
6665660a PA |
1563 | /* Sort an array of struct thread_info pointers by thread ID (first by |
1564 | inferior number, and then by per-inferior thread number). Sorts in | |
1565 | descending order. */ | |
253828f1 | 1566 | |
c6609450 | 1567 | static bool |
6665660a | 1568 | tp_array_compar_descending (const thread_info *a, const thread_info *b) |
253828f1 | 1569 | { |
5d5658a1 | 1570 | if (a->inf->num != b->inf->num) |
6665660a | 1571 | return a->inf->num > b->inf->num; |
253828f1 | 1572 | |
6665660a | 1573 | return (a->per_inf_num > b->per_inf_num); |
253828f1 JK |
1574 | } |
1575 | ||
1fe75df7 PW |
1576 | /* Switch to thread THR and execute CMD. |
1577 | FLAGS.QUIET controls the printing of the thread information. | |
1578 | FLAGS.CONT and FLAGS.SILENT control how to handle errors. */ | |
1579 | ||
1580 | static void | |
1581 | thr_try_catch_cmd (thread_info *thr, const char *cmd, int from_tty, | |
1582 | const qcs_flags &flags) | |
1583 | { | |
1584 | switch_to_thread (thr); | |
a70b8144 | 1585 | try |
1fe75df7 | 1586 | { |
8a522c6c PW |
1587 | std::string cmd_result = execute_command_to_string |
1588 | (cmd, from_tty, gdb_stdout->term_out ()); | |
1fe75df7 PW |
1589 | if (!flags.silent || cmd_result.length () > 0) |
1590 | { | |
1591 | if (!flags.quiet) | |
1592 | printf_filtered (_("\nThread %s (%s):\n"), | |
1593 | print_thread_id (thr), | |
a068643d | 1594 | target_pid_to_str (inferior_ptid).c_str ()); |
1fe75df7 PW |
1595 | printf_filtered ("%s", cmd_result.c_str ()); |
1596 | } | |
1597 | } | |
230d2906 | 1598 | catch (const gdb_exception_error &ex) |
1fe75df7 PW |
1599 | { |
1600 | if (!flags.silent) | |
1601 | { | |
1602 | if (!flags.quiet) | |
1603 | printf_filtered (_("\nThread %s (%s):\n"), | |
1604 | print_thread_id (thr), | |
a068643d | 1605 | target_pid_to_str (inferior_ptid).c_str ()); |
1fe75df7 | 1606 | if (flags.cont) |
3d6e9d23 | 1607 | printf_filtered ("%s\n", ex.what ()); |
1fe75df7 | 1608 | else |
eedc3f4f | 1609 | throw; |
1fe75df7 PW |
1610 | } |
1611 | } | |
1fe75df7 PW |
1612 | } |
1613 | ||
6665660a PA |
1614 | /* Option definition of "thread apply"'s "-ascending" option. */ |
1615 | ||
1616 | static const gdb::option::flag_option_def<> ascending_option_def = { | |
1617 | "ascending", | |
1618 | N_("\ | |
1619 | Call COMMAND for all threads in ascending order.\n\ | |
1620 | The default is descending order."), | |
1621 | }; | |
1622 | ||
1623 | /* The qcs command line flags for the "thread apply" commands. Keep | |
1624 | this in sync with the "frame apply" commands. */ | |
1625 | ||
1626 | using qcs_flag_option_def | |
1627 | = gdb::option::flag_option_def<qcs_flags>; | |
1628 | ||
1629 | static const gdb::option::option_def thr_qcs_flags_option_defs[] = { | |
1630 | qcs_flag_option_def { | |
1631 | "q", [] (qcs_flags *opt) { return &opt->quiet; }, | |
1632 | N_("Disables printing the thread information."), | |
1633 | }, | |
1634 | ||
1635 | qcs_flag_option_def { | |
1636 | "c", [] (qcs_flags *opt) { return &opt->cont; }, | |
1637 | N_("Print any error raised by COMMAND and continue."), | |
1638 | }, | |
1639 | ||
1640 | qcs_flag_option_def { | |
1641 | "s", [] (qcs_flags *opt) { return &opt->silent; }, | |
1642 | N_("Silently ignore any errors or empty output produced by COMMAND."), | |
1643 | }, | |
1644 | }; | |
1645 | ||
1646 | /* Create an option_def_group for the "thread apply all" options, with | |
1647 | ASCENDING and FLAGS as context. */ | |
1648 | ||
1649 | static inline std::array<gdb::option::option_def_group, 2> | |
491144b5 | 1650 | make_thread_apply_all_options_def_group (bool *ascending, |
6665660a PA |
1651 | qcs_flags *flags) |
1652 | { | |
1653 | return {{ | |
66eb1ed3 PA |
1654 | { {ascending_option_def.def ()}, ascending}, |
1655 | { {thr_qcs_flags_option_defs}, flags }, | |
6665660a PA |
1656 | }}; |
1657 | } | |
1658 | ||
1659 | /* Create an option_def_group for the "thread apply" options, with | |
1660 | FLAGS as context. */ | |
1661 | ||
1662 | static inline gdb::option::option_def_group | |
1663 | make_thread_apply_options_def_group (qcs_flags *flags) | |
1664 | { | |
66eb1ed3 | 1665 | return {{thr_qcs_flags_option_defs}, flags}; |
6665660a PA |
1666 | } |
1667 | ||
c906108c | 1668 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
224608c3 PW |
1669 | separated list of numbers, or ranges, or the keyword `all'. Ranges consist |
1670 | of two numbers separated by a hyphen. Examples: | |
c906108c | 1671 | |
c5aa993b JM |
1672 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
1673 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
224608c3 | 1674 | thread apply all x/i $pc Apply x/i $pc cmd to all threads. */ |
c906108c SS |
1675 | |
1676 | static void | |
5fed81ff | 1677 | thread_apply_all_command (const char *cmd, int from_tty) |
c906108c | 1678 | { |
491144b5 | 1679 | bool ascending = false; |
1fe75df7 PW |
1680 | qcs_flags flags; |
1681 | ||
6665660a PA |
1682 | auto group = make_thread_apply_all_options_def_group (&ascending, |
1683 | &flags); | |
1684 | gdb::option::process_options | |
1685 | (&cmd, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group); | |
1fe75df7 | 1686 | |
6665660a | 1687 | validate_flags_qcs ("thread apply all", &flags); |
253828f1 | 1688 | |
c906108c | 1689 | if (cmd == NULL || *cmd == '\000') |
1fe75df7 | 1690 | error (_("Please specify a command at the end of 'thread apply all'")); |
94cc34af | 1691 | |
dc146f7c | 1692 | update_thread_list (); |
e9d196c5 | 1693 | |
c6609450 | 1694 | int tc = live_threads_count (); |
a25d8bf9 | 1695 | if (tc != 0) |
054e8d9e | 1696 | { |
c6609450 PA |
1697 | /* Save a copy of the thread list and increment each thread's |
1698 | refcount while executing the command in the context of each | |
1699 | thread, in case the command is one that wipes threads. E.g., | |
1700 | detach, kill, disconnect, etc., or even normally continuing | |
1701 | over an inferior or thread exit. */ | |
1702 | std::vector<thread_info *> thr_list_cpy; | |
1703 | thr_list_cpy.reserve (tc); | |
054e8d9e | 1704 | |
08036331 PA |
1705 | for (thread_info *tp : all_non_exited_threads ()) |
1706 | thr_list_cpy.push_back (tp); | |
1707 | gdb_assert (thr_list_cpy.size () == tc); | |
054e8d9e | 1708 | |
c6609450 PA |
1709 | /* Increment the refcounts, and restore them back on scope |
1710 | exit. */ | |
1711 | scoped_inc_dec_ref inc_dec_ref (thr_list_cpy); | |
253828f1 | 1712 | |
6665660a PA |
1713 | auto *sorter = (ascending |
1714 | ? tp_array_compar_ascending | |
1715 | : tp_array_compar_descending); | |
1716 | std::sort (thr_list_cpy.begin (), thr_list_cpy.end (), sorter); | |
054e8d9e | 1717 | |
5ed8105e PA |
1718 | scoped_restore_current_thread restore_thread; |
1719 | ||
c6609450 PA |
1720 | for (thread_info *thr : thr_list_cpy) |
1721 | if (thread_alive (thr)) | |
1fe75df7 | 1722 | thr_try_catch_cmd (thr, cmd, from_tty, flags); |
054e8d9e | 1723 | } |
c906108c SS |
1724 | } |
1725 | ||
6665660a PA |
1726 | /* Completer for "thread apply [ID list]". */ |
1727 | ||
1728 | static void | |
1729 | thread_apply_command_completer (cmd_list_element *ignore, | |
1730 | completion_tracker &tracker, | |
1731 | const char *text, const char * /*word*/) | |
1732 | { | |
1733 | /* Don't leave this to complete_options because there's an early | |
1734 | return below. */ | |
1735 | tracker.set_use_custom_word_point (true); | |
1736 | ||
1737 | tid_range_parser parser; | |
1738 | parser.init (text, current_inferior ()->num); | |
1739 | ||
1740 | try | |
1741 | { | |
1742 | while (!parser.finished ()) | |
1743 | { | |
1744 | int inf_num, thr_start, thr_end; | |
1745 | ||
1746 | if (!parser.get_tid_range (&inf_num, &thr_start, &thr_end)) | |
1747 | break; | |
1748 | ||
1749 | if (parser.in_star_range () || parser.in_thread_range ()) | |
1750 | parser.skip_range (); | |
1751 | } | |
1752 | } | |
1753 | catch (const gdb_exception_error &ex) | |
1754 | { | |
1755 | /* get_tid_range throws if it parses a negative number, for | |
1756 | example. But a seemingly negative number may be the start of | |
1757 | an option instead. */ | |
1758 | } | |
1759 | ||
1760 | const char *cmd = parser.cur_tok (); | |
1761 | ||
1762 | if (cmd == text) | |
1763 | { | |
1764 | /* No thread ID list yet. */ | |
1765 | return; | |
1766 | } | |
1767 | ||
1768 | /* Check if we're past a valid thread ID list already. */ | |
1769 | if (parser.finished () | |
1770 | && cmd > text && !isspace (cmd[-1])) | |
1771 | return; | |
1772 | ||
1773 | /* We're past the thread ID list, advance word point. */ | |
1774 | tracker.advance_custom_word_point_by (cmd - text); | |
1775 | text = cmd; | |
1776 | ||
1777 | const auto group = make_thread_apply_options_def_group (nullptr); | |
1778 | if (gdb::option::complete_options | |
1779 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
1780 | return; | |
1781 | ||
1782 | complete_nested_command_line (tracker, text); | |
1783 | } | |
1784 | ||
1785 | /* Completer for "thread apply all". */ | |
1786 | ||
1787 | static void | |
1788 | thread_apply_all_command_completer (cmd_list_element *ignore, | |
1789 | completion_tracker &tracker, | |
1790 | const char *text, const char *word) | |
1791 | { | |
1792 | const auto group = make_thread_apply_all_options_def_group (nullptr, | |
1793 | nullptr); | |
1794 | if (gdb::option::complete_options | |
1795 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
1796 | return; | |
1797 | ||
1798 | complete_nested_command_line (tracker, text); | |
1799 | } | |
1800 | ||
43792cf0 PA |
1801 | /* Implementation of the "thread apply" command. */ |
1802 | ||
c906108c | 1803 | static void |
981a3fb3 | 1804 | thread_apply_command (const char *tidlist, int from_tty) |
c906108c | 1805 | { |
1fe75df7 | 1806 | qcs_flags flags; |
95a6b0a1 | 1807 | const char *cmd = NULL; |
bfd28288 | 1808 | tid_range_parser parser; |
c906108c SS |
1809 | |
1810 | if (tidlist == NULL || *tidlist == '\000') | |
8a3fe4f8 | 1811 | error (_("Please specify a thread ID list")); |
c906108c | 1812 | |
bfd28288 PA |
1813 | parser.init (tidlist, current_inferior ()->num); |
1814 | while (!parser.finished ()) | |
3f5b7598 PA |
1815 | { |
1816 | int inf_num, thr_start, thr_end; | |
c906108c | 1817 | |
bfd28288 | 1818 | if (!parser.get_tid_range (&inf_num, &thr_start, &thr_end)) |
b9a3f842 | 1819 | break; |
3f5b7598 PA |
1820 | } |
1821 | ||
b9a3f842 PA |
1822 | cmd = parser.cur_tok (); |
1823 | ||
6665660a PA |
1824 | auto group = make_thread_apply_options_def_group (&flags); |
1825 | gdb::option::process_options | |
1826 | (&cmd, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group); | |
1827 | ||
1828 | validate_flags_qcs ("thread apply", &flags); | |
1fe75df7 | 1829 | |
b9a3f842 | 1830 | if (*cmd == '\0') |
8a3fe4f8 | 1831 | error (_("Please specify a command following the thread ID list")); |
c906108c | 1832 | |
f7e13587 | 1833 | if (tidlist == cmd || isdigit (cmd[0])) |
3f5b7598 PA |
1834 | invalid_thread_id_error (cmd); |
1835 | ||
5ed8105e | 1836 | scoped_restore_current_thread restore_thread; |
c906108c | 1837 | |
bfd28288 | 1838 | parser.init (tidlist, current_inferior ()->num); |
b9a3f842 | 1839 | while (!parser.finished ()) |
5d5658a1 PA |
1840 | { |
1841 | struct thread_info *tp = NULL; | |
1842 | struct inferior *inf; | |
1843 | int inf_num, thr_num; | |
65fc9b77 | 1844 | |
bfd28288 | 1845 | parser.get_tid (&inf_num, &thr_num); |
5d5658a1 PA |
1846 | inf = find_inferior_id (inf_num); |
1847 | if (inf != NULL) | |
1848 | tp = find_thread_id (inf, thr_num); | |
71ef29a8 | 1849 | |
bfd28288 | 1850 | if (parser.in_star_range ()) |
71ef29a8 PA |
1851 | { |
1852 | if (inf == NULL) | |
1853 | { | |
1854 | warning (_("Unknown inferior %d"), inf_num); | |
bfd28288 | 1855 | parser.skip_range (); |
71ef29a8 PA |
1856 | continue; |
1857 | } | |
1858 | ||
1859 | /* No use looking for threads past the highest thread number | |
1860 | the inferior ever had. */ | |
1861 | if (thr_num >= inf->highest_thread_num) | |
bfd28288 | 1862 | parser.skip_range (); |
71ef29a8 PA |
1863 | |
1864 | /* Be quiet about unknown threads numbers. */ | |
1865 | if (tp == NULL) | |
1866 | continue; | |
1867 | } | |
1868 | ||
5d5658a1 PA |
1869 | if (tp == NULL) |
1870 | { | |
bfd28288 | 1871 | if (show_inferior_qualified_tids () || parser.tid_is_qualified ()) |
5d5658a1 PA |
1872 | warning (_("Unknown thread %d.%d"), inf_num, thr_num); |
1873 | else | |
1874 | warning (_("Unknown thread %d"), thr_num); | |
1875 | continue; | |
1876 | } | |
c906108c | 1877 | |
5d5658a1 | 1878 | if (!thread_alive (tp)) |
65ebfb52 | 1879 | { |
5d5658a1 PA |
1880 | warning (_("Thread %s has terminated."), print_thread_id (tp)); |
1881 | continue; | |
1882 | } | |
4f8d22e3 | 1883 | |
1fe75df7 | 1884 | thr_try_catch_cmd (tp, cmd, from_tty, flags); |
c906108c SS |
1885 | } |
1886 | } | |
1887 | ||
1fe75df7 PW |
1888 | |
1889 | /* Implementation of the "taas" command. */ | |
1890 | ||
1891 | static void | |
1892 | taas_command (const char *cmd, int from_tty) | |
1893 | { | |
e0fad1ea PW |
1894 | if (cmd == NULL || *cmd == '\0') |
1895 | error (_("Please specify a command to apply on all threads")); | |
1fe75df7 PW |
1896 | std::string expanded = std::string ("thread apply all -s ") + cmd; |
1897 | execute_command (expanded.c_str (), from_tty); | |
1898 | } | |
1899 | ||
1900 | /* Implementation of the "tfaas" command. */ | |
1901 | ||
1902 | static void | |
1903 | tfaas_command (const char *cmd, int from_tty) | |
1904 | { | |
e0fad1ea PW |
1905 | if (cmd == NULL || *cmd == '\0') |
1906 | error (_("Please specify a command to apply on all frames of all threads")); | |
1fe75df7 | 1907 | std::string expanded |
5d707134 | 1908 | = std::string ("thread apply all -s -- frame apply all -s ") + cmd; |
1fe75df7 PW |
1909 | execute_command (expanded.c_str (), from_tty); |
1910 | } | |
1911 | ||
224608c3 | 1912 | /* Switch to the specified thread, or print the current thread. */ |
c906108c | 1913 | |
f0e8c4c5 | 1914 | void |
981a3fb3 | 1915 | thread_command (const char *tidstr, int from_tty) |
c906108c | 1916 | { |
4034d0ff | 1917 | if (tidstr == NULL) |
c906108c | 1918 | { |
9295a5a9 | 1919 | if (inferior_ptid == null_ptid) |
d729566a PA |
1920 | error (_("No thread selected")); |
1921 | ||
c906108c | 1922 | if (target_has_stack) |
4f8d22e3 | 1923 | { |
43792cf0 PA |
1924 | struct thread_info *tp = inferior_thread (); |
1925 | ||
00431a78 | 1926 | if (tp->state == THREAD_EXITED) |
43792cf0 PA |
1927 | printf_filtered (_("[Current thread is %s (%s) (exited)]\n"), |
1928 | print_thread_id (tp), | |
a068643d | 1929 | target_pid_to_str (inferior_ptid).c_str ()); |
4f8d22e3 | 1930 | else |
43792cf0 PA |
1931 | printf_filtered (_("[Current thread is %s (%s)]\n"), |
1932 | print_thread_id (tp), | |
a068643d | 1933 | target_pid_to_str (inferior_ptid).c_str ()); |
4f8d22e3 | 1934 | } |
c906108c | 1935 | else |
8a3fe4f8 | 1936 | error (_("No stack.")); |
c906108c | 1937 | } |
4034d0ff AT |
1938 | else |
1939 | { | |
1940 | ptid_t previous_ptid = inferior_ptid; | |
4034d0ff | 1941 | |
65630365 | 1942 | thread_select (tidstr, parse_thread_id (tidstr, NULL)); |
c5394b80 | 1943 | |
ae0eee42 PA |
1944 | /* Print if the thread has not changed, otherwise an event will |
1945 | be sent. */ | |
9295a5a9 | 1946 | if (inferior_ptid == previous_ptid) |
4034d0ff AT |
1947 | { |
1948 | print_selected_thread_frame (current_uiout, | |
1949 | USER_SELECTED_THREAD | |
1950 | | USER_SELECTED_FRAME); | |
1951 | } | |
1952 | else | |
1953 | { | |
76727919 TT |
1954 | gdb::observers::user_selected_context_changed.notify |
1955 | (USER_SELECTED_THREAD | USER_SELECTED_FRAME); | |
4034d0ff AT |
1956 | } |
1957 | } | |
c5394b80 JM |
1958 | } |
1959 | ||
4694da01 TT |
1960 | /* Implementation of `thread name'. */ |
1961 | ||
1962 | static void | |
fc41a75b | 1963 | thread_name_command (const char *arg, int from_tty) |
4694da01 TT |
1964 | { |
1965 | struct thread_info *info; | |
1966 | ||
9295a5a9 | 1967 | if (inferior_ptid == null_ptid) |
4694da01 TT |
1968 | error (_("No thread selected")); |
1969 | ||
529480d0 | 1970 | arg = skip_spaces (arg); |
4694da01 TT |
1971 | |
1972 | info = inferior_thread (); | |
1973 | xfree (info->name); | |
1974 | info->name = arg ? xstrdup (arg) : NULL; | |
1975 | } | |
1976 | ||
60f98dde MS |
1977 | /* Find thread ids with a name, target pid, or extra info matching ARG. */ |
1978 | ||
1979 | static void | |
fc41a75b | 1980 | thread_find_command (const char *arg, int from_tty) |
60f98dde | 1981 | { |
73ede765 | 1982 | const char *tmp; |
60f98dde MS |
1983 | unsigned long match = 0; |
1984 | ||
1985 | if (arg == NULL || *arg == '\0') | |
1986 | error (_("Command requires an argument.")); | |
1987 | ||
1988 | tmp = re_comp (arg); | |
1989 | if (tmp != 0) | |
1990 | error (_("Invalid regexp (%s): %s"), tmp, arg); | |
1991 | ||
1992 | update_thread_list (); | |
08036331 | 1993 | for (thread_info *tp : all_threads ()) |
60f98dde MS |
1994 | { |
1995 | if (tp->name != NULL && re_exec (tp->name)) | |
1996 | { | |
43792cf0 PA |
1997 | printf_filtered (_("Thread %s has name '%s'\n"), |
1998 | print_thread_id (tp), tp->name); | |
60f98dde MS |
1999 | match++; |
2000 | } | |
2001 | ||
2002 | tmp = target_thread_name (tp); | |
2003 | if (tmp != NULL && re_exec (tmp)) | |
2004 | { | |
43792cf0 PA |
2005 | printf_filtered (_("Thread %s has target name '%s'\n"), |
2006 | print_thread_id (tp), tmp); | |
60f98dde MS |
2007 | match++; |
2008 | } | |
2009 | ||
a068643d TT |
2010 | std::string name = target_pid_to_str (tp->ptid); |
2011 | if (!name.empty () && re_exec (name.c_str ())) | |
60f98dde | 2012 | { |
43792cf0 | 2013 | printf_filtered (_("Thread %s has target id '%s'\n"), |
a068643d | 2014 | print_thread_id (tp), name.c_str ()); |
60f98dde MS |
2015 | match++; |
2016 | } | |
2017 | ||
2018 | tmp = target_extra_thread_info (tp); | |
2019 | if (tmp != NULL && re_exec (tmp)) | |
2020 | { | |
43792cf0 PA |
2021 | printf_filtered (_("Thread %s has extra info '%s'\n"), |
2022 | print_thread_id (tp), tmp); | |
60f98dde MS |
2023 | match++; |
2024 | } | |
2025 | } | |
2026 | if (!match) | |
2027 | printf_filtered (_("No threads match '%s'\n"), arg); | |
2028 | } | |
2029 | ||
93815fbf | 2030 | /* Print notices when new threads are attached and detached. */ |
491144b5 | 2031 | bool print_thread_events = true; |
93815fbf VP |
2032 | static void |
2033 | show_print_thread_events (struct ui_file *file, int from_tty, | |
ae0eee42 | 2034 | struct cmd_list_element *c, const char *value) |
93815fbf | 2035 | { |
3e43a32a MS |
2036 | fprintf_filtered (file, |
2037 | _("Printing of thread events is %s.\n"), | |
ae0eee42 | 2038 | value); |
93815fbf VP |
2039 | } |
2040 | ||
65630365 | 2041 | /* See gdbthread.h. */ |
c906108c | 2042 | |
65630365 PA |
2043 | void |
2044 | thread_select (const char *tidstr, thread_info *tp) | |
2045 | { | |
c906108c | 2046 | if (!thread_alive (tp)) |
5d5658a1 | 2047 | error (_("Thread ID %s has terminated."), tidstr); |
c906108c | 2048 | |
00431a78 | 2049 | switch_to_thread (tp); |
c906108c | 2050 | |
db5a7484 NR |
2051 | annotate_thread_changed (); |
2052 | ||
4034d0ff AT |
2053 | /* Since the current thread may have changed, see if there is any |
2054 | exited thread we can now delete. */ | |
2055 | prune_threads (); | |
4034d0ff AT |
2056 | } |
2057 | ||
2058 | /* Print thread and frame switch command response. */ | |
2059 | ||
2060 | void | |
2061 | print_selected_thread_frame (struct ui_out *uiout, | |
2062 | user_selected_what selection) | |
2063 | { | |
2064 | struct thread_info *tp = inferior_thread (); | |
4034d0ff AT |
2065 | |
2066 | if (selection & USER_SELECTED_THREAD) | |
5d5658a1 | 2067 | { |
112e8700 | 2068 | if (uiout->is_mi_like_p ()) |
4034d0ff | 2069 | { |
381befee TT |
2070 | uiout->field_signed ("new-thread-id", |
2071 | inferior_thread ()->global_num); | |
4034d0ff AT |
2072 | } |
2073 | else | |
2074 | { | |
112e8700 SM |
2075 | uiout->text ("[Switching to thread "); |
2076 | uiout->field_string ("new-thread-id", print_thread_id (tp)); | |
2077 | uiout->text (" ("); | |
a068643d | 2078 | uiout->text (target_pid_to_str (inferior_ptid).c_str ()); |
112e8700 | 2079 | uiout->text (")]"); |
4034d0ff | 2080 | } |
5d5658a1 | 2081 | } |
c5394b80 | 2082 | |
30596231 | 2083 | if (tp->state == THREAD_RUNNING) |
98871305 | 2084 | { |
4034d0ff | 2085 | if (selection & USER_SELECTED_THREAD) |
112e8700 | 2086 | uiout->text ("(running)\n"); |
98871305 | 2087 | } |
4034d0ff AT |
2088 | else if (selection & USER_SELECTED_FRAME) |
2089 | { | |
2090 | if (selection & USER_SELECTED_THREAD) | |
112e8700 | 2091 | uiout->text ("\n"); |
4f8d22e3 | 2092 | |
4034d0ff AT |
2093 | if (has_stack_frames ()) |
2094 | print_stack_frame_to_uiout (uiout, get_selected_frame (NULL), | |
2095 | 1, SRC_AND_LOC, 1); | |
2096 | } | |
c5394b80 JM |
2097 | } |
2098 | ||
b57bacec PA |
2099 | /* Update the 'threads_executing' global based on the threads we know |
2100 | about right now. */ | |
2101 | ||
2102 | static void | |
2103 | update_threads_executing (void) | |
2104 | { | |
b57bacec | 2105 | threads_executing = 0; |
08036331 | 2106 | for (thread_info *tp : all_non_exited_threads ()) |
b57bacec PA |
2107 | { |
2108 | if (tp->executing) | |
2109 | { | |
2110 | threads_executing = 1; | |
2111 | break; | |
2112 | } | |
2113 | } | |
2114 | } | |
2115 | ||
dc146f7c VP |
2116 | void |
2117 | update_thread_list (void) | |
2118 | { | |
e8032dde | 2119 | target_update_thread_list (); |
b57bacec | 2120 | update_threads_executing (); |
dc146f7c VP |
2121 | } |
2122 | ||
663f6d42 PA |
2123 | /* Return a new value for the selected thread's id. Return a value of |
2124 | 0 if no thread is selected. If GLOBAL is true, return the thread's | |
2125 | global number. Otherwise return the per-inferior number. */ | |
2126 | ||
2127 | static struct value * | |
2128 | thread_num_make_value_helper (struct gdbarch *gdbarch, int global) | |
2129 | { | |
663f6d42 PA |
2130 | int int_val; |
2131 | ||
00431a78 | 2132 | if (inferior_ptid == null_ptid) |
663f6d42 | 2133 | int_val = 0; |
663f6d42 | 2134 | else |
00431a78 PA |
2135 | { |
2136 | thread_info *tp = inferior_thread (); | |
2137 | if (global) | |
2138 | int_val = tp->global_num; | |
2139 | else | |
2140 | int_val = tp->per_inf_num; | |
2141 | } | |
663f6d42 PA |
2142 | |
2143 | return value_from_longest (builtin_type (gdbarch)->builtin_int, int_val); | |
2144 | } | |
2145 | ||
5d5658a1 PA |
2146 | /* Return a new value for the selected thread's per-inferior thread |
2147 | number. Return a value of 0 if no thread is selected, or no | |
2148 | threads exist. */ | |
6aed2dbc SS |
2149 | |
2150 | static struct value * | |
ae0eee42 PA |
2151 | thread_id_per_inf_num_make_value (struct gdbarch *gdbarch, |
2152 | struct internalvar *var, | |
663f6d42 | 2153 | void *ignore) |
6aed2dbc | 2154 | { |
663f6d42 PA |
2155 | return thread_num_make_value_helper (gdbarch, 0); |
2156 | } | |
2157 | ||
2158 | /* Return a new value for the selected thread's global id. Return a | |
2159 | value of 0 if no thread is selected, or no threads exist. */ | |
6aed2dbc | 2160 | |
663f6d42 PA |
2161 | static struct value * |
2162 | global_thread_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, | |
2163 | void *ignore) | |
2164 | { | |
2165 | return thread_num_make_value_helper (gdbarch, 1); | |
6aed2dbc SS |
2166 | } |
2167 | ||
c906108c SS |
2168 | /* Commands with a prefix of `thread'. */ |
2169 | struct cmd_list_element *thread_cmd_list = NULL; | |
2170 | ||
22d2b532 SDJ |
2171 | /* Implementation of `thread' variable. */ |
2172 | ||
2173 | static const struct internalvar_funcs thread_funcs = | |
2174 | { | |
663f6d42 PA |
2175 | thread_id_per_inf_num_make_value, |
2176 | NULL, | |
2177 | NULL | |
2178 | }; | |
2179 | ||
2180 | /* Implementation of `gthread' variable. */ | |
2181 | ||
2182 | static const struct internalvar_funcs gthread_funcs = | |
2183 | { | |
2184 | global_thread_id_make_value, | |
22d2b532 SDJ |
2185 | NULL, |
2186 | NULL | |
2187 | }; | |
2188 | ||
c906108c | 2189 | void |
fba45db2 | 2190 | _initialize_thread (void) |
c906108c SS |
2191 | { |
2192 | static struct cmd_list_element *thread_apply_list = NULL; | |
5d707134 | 2193 | cmd_list_element *c; |
c906108c | 2194 | |
54d66006 PA |
2195 | const auto info_threads_opts = make_info_threads_options_def_group (nullptr); |
2196 | ||
2197 | /* Note: keep this "ID" in sync with what "info threads [TAB]" | |
2198 | suggests. */ | |
2199 | static std::string info_threads_help | |
2200 | = gdb::option::build_help (_("\ | |
2201 | Display currently known threads.\n\ | |
2202 | Usage: info threads [OPTION]... [ID]...\n\ | |
2203 | \n\ | |
2204 | Options:\n\ | |
2205 | %OPTIONS%\ | |
5d5658a1 | 2206 | If ID is given, it is a space-separated list of IDs of threads to display.\n\ |
54d66006 PA |
2207 | Otherwise, all threads are displayed."), |
2208 | info_threads_opts); | |
2209 | ||
2210 | c = add_info ("threads", info_threads_command, info_threads_help.c_str ()); | |
2211 | set_cmd_completer_handle_brkchars (c, info_threads_command_completer); | |
c906108c | 2212 | |
d729566a | 2213 | add_prefix_cmd ("thread", class_run, thread_command, _("\ |
1bedd215 AC |
2214 | Use this command to switch between threads.\n\ |
2215 | The new thread ID must be currently known."), | |
d729566a | 2216 | &thread_cmd_list, "thread ", 1, &cmdlist); |
c906108c | 2217 | |
6665660a | 2218 | #define THREAD_APPLY_OPTION_HELP "\ |
1fe75df7 PW |
2219 | Prints per-inferior thread number and target system's thread id\n\ |
2220 | followed by COMMAND output.\n\ | |
6665660a PA |
2221 | \n\ |
2222 | By default, an error raised during the execution of COMMAND\n\ | |
2223 | aborts \"thread apply\".\n\ | |
2224 | \n\ | |
2225 | Options:\n\ | |
2226 | %OPTIONS%" | |
2227 | ||
2228 | const auto thread_apply_opts = make_thread_apply_options_def_group (nullptr); | |
2229 | ||
8abfcabc | 2230 | static std::string thread_apply_help = gdb::option::build_help (_("\ |
6665660a PA |
2231 | Apply a command to a list of threads.\n\ |
2232 | Usage: thread apply ID... [OPTION]... COMMAND\n\ | |
1fe75df7 | 2233 | ID is a space-separated list of IDs of threads to apply COMMAND on.\n" |
6665660a PA |
2234 | THREAD_APPLY_OPTION_HELP), |
2235 | thread_apply_opts); | |
2236 | ||
2237 | c = add_prefix_cmd ("apply", class_run, thread_apply_command, | |
2238 | thread_apply_help.c_str (), | |
2239 | &thread_apply_list, "thread apply ", 1, | |
2240 | &thread_cmd_list); | |
2241 | set_cmd_completer_handle_brkchars (c, thread_apply_command_completer); | |
c906108c | 2242 | |
6665660a PA |
2243 | const auto thread_apply_all_opts |
2244 | = make_thread_apply_all_options_def_group (nullptr, nullptr); | |
2245 | ||
8abfcabc | 2246 | static std::string thread_apply_all_help = gdb::option::build_help (_("\ |
253828f1 JK |
2247 | Apply a command to all threads.\n\ |
2248 | \n\ | |
6665660a PA |
2249 | Usage: thread apply all [OPTION]... COMMAND\n" |
2250 | THREAD_APPLY_OPTION_HELP), | |
2251 | thread_apply_all_opts); | |
2252 | ||
2253 | c = add_cmd ("all", class_run, thread_apply_all_command, | |
2254 | thread_apply_all_help.c_str (), | |
2255 | &thread_apply_list); | |
2256 | set_cmd_completer_handle_brkchars (c, thread_apply_all_command_completer); | |
c906108c | 2257 | |
6665660a | 2258 | c = add_com ("taas", class_run, taas_command, _("\ |
1fe75df7 | 2259 | Apply a command to all threads (ignoring errors and empty output).\n\ |
6665660a PA |
2260 | Usage: taas [OPTION]... COMMAND\n\ |
2261 | shortcut for 'thread apply all -s [OPTION]... COMMAND'\n\ | |
2262 | See \"help thread apply all\" for available options.")); | |
2263 | set_cmd_completer_handle_brkchars (c, thread_apply_all_command_completer); | |
1fe75df7 | 2264 | |
5d707134 | 2265 | c = add_com ("tfaas", class_run, tfaas_command, _("\ |
1fe75df7 | 2266 | Apply a command to all frames of all threads (ignoring errors and empty output).\n\ |
5d707134 PA |
2267 | Usage: tfaas [OPTION]... COMMAND\n\ |
2268 | shortcut for 'thread apply all -s -- frame apply all -s [OPTION]... COMMAND'\n\ | |
2269 | See \"help frame apply all\" for available options.")); | |
2270 | set_cmd_completer_handle_brkchars (c, frame_apply_all_cmd_completer); | |
1fe75df7 | 2271 | |
4694da01 TT |
2272 | add_cmd ("name", class_run, thread_name_command, |
2273 | _("Set the current thread's name.\n\ | |
2274 | Usage: thread name [NAME]\n\ | |
2275 | If NAME is not given, then any existing name is removed."), &thread_cmd_list); | |
2276 | ||
60f98dde MS |
2277 | add_cmd ("find", class_run, thread_find_command, _("\ |
2278 | Find threads that match a regular expression.\n\ | |
2279 | Usage: thread find REGEXP\n\ | |
2280 | Will display thread ids whose name, target ID, or extra info matches REGEXP."), | |
2281 | &thread_cmd_list); | |
2282 | ||
4f45d445 | 2283 | add_com_alias ("t", "thread", class_run, 1); |
93815fbf VP |
2284 | |
2285 | add_setshow_boolean_cmd ("thread-events", no_class, | |
ae0eee42 | 2286 | &print_thread_events, _("\ |
11c68c47 EZ |
2287 | Set printing of thread events (such as thread start and exit)."), _("\ |
2288 | Show printing of thread events (such as thread start and exit)."), NULL, | |
ae0eee42 PA |
2289 | NULL, |
2290 | show_print_thread_events, | |
2291 | &setprintlist, &showprintlist); | |
6aed2dbc | 2292 | |
22d2b532 | 2293 | create_internalvar_type_lazy ("_thread", &thread_funcs, NULL); |
663f6d42 | 2294 | create_internalvar_type_lazy ("_gthread", >hread_funcs, NULL); |
c906108c | 2295 | } |