Commit | Line | Data |
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c906108c | 1 | /* Multi-process/thread control for GDB, the GNU debugger. |
8926118c | 2 | |
b811d2c2 | 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 | ||
3922b302 PA |
58 | /* The current/selected thread. */ |
59 | static thread_info *current_thread_; | |
60 | ||
c6609450 PA |
61 | /* RAII type used to increase / decrease the refcount of each thread |
62 | in a given list of threads. */ | |
054e8d9e | 63 | |
c6609450 | 64 | class scoped_inc_dec_ref |
054e8d9e | 65 | { |
c6609450 PA |
66 | public: |
67 | explicit scoped_inc_dec_ref (const std::vector<thread_info *> &thrds) | |
68 | : m_thrds (thrds) | |
69 | { | |
70 | for (thread_info *thr : m_thrds) | |
71 | thr->incref (); | |
72 | } | |
054e8d9e | 73 | |
c6609450 PA |
74 | ~scoped_inc_dec_ref () |
75 | { | |
76 | for (thread_info *thr : m_thrds) | |
77 | thr->decref (); | |
78 | } | |
79 | ||
80 | private: | |
81 | const std::vector<thread_info *> &m_thrds; | |
054e8d9e AA |
82 | }; |
83 | ||
3922b302 PA |
84 | /* Returns true if THR is the current thread. */ |
85 | ||
86 | static bool | |
87 | is_current_thread (const thread_info *thr) | |
88 | { | |
89 | return thr == current_thread_; | |
90 | } | |
054e8d9e | 91 | |
a5321aa4 | 92 | struct thread_info* |
4e1c45ea | 93 | inferior_thread (void) |
8601f500 | 94 | { |
3922b302 PA |
95 | gdb_assert (current_thread_ != nullptr); |
96 | return current_thread_; | |
4e1c45ea | 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 | 199 | |
5b6d1e4f | 200 | clear_inline_frame_state (tp); |
4f8d22e3 PA |
201 | } |
202 | ||
803bdfe4 YQ |
203 | /* Set the TP's state as exited. */ |
204 | ||
205 | static void | |
3922b302 | 206 | set_thread_exited (thread_info *tp, bool silent) |
803bdfe4 YQ |
207 | { |
208 | /* Dead threads don't need to step-over. Remove from queue. */ | |
209 | if (tp->step_over_next != NULL) | |
7bd43605 | 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 | |
08036331 PA |
238 | inf->thread_list = NULL; |
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 | |
08036331 PA |
250 | if (inf->thread_list == NULL) |
251 | inf->thread_list = tp; | |
b05b1202 PA |
252 | else |
253 | { | |
254 | struct thread_info *last; | |
255 | ||
08036331 | 256 | for (last = inf->thread_list; last->next != NULL; last = last->next) |
3922b302 PA |
257 | gdb_assert (ptid != last->ptid |
258 | || last->state == THREAD_EXITED); | |
259 | ||
260 | gdb_assert (ptid != last->ptid | |
261 | || last->state == THREAD_EXITED); | |
262 | ||
b05b1202 PA |
263 | last->next = tp; |
264 | } | |
e58b0e63 | 265 | |
e58b0e63 PA |
266 | return tp; |
267 | } | |
268 | ||
0d06e24b | 269 | struct thread_info * |
5b6d1e4f | 270 | add_thread_silent (process_stratum_target *targ, ptid_t ptid) |
c906108c | 271 | { |
3922b302 | 272 | inferior *inf = find_inferior_ptid (targ, ptid); |
5b6d1e4f | 273 | |
3922b302 PA |
274 | /* We may have an old thread with the same id in the thread list. |
275 | If we do, it must be dead, otherwise we wouldn't be adding a new | |
276 | thread with the same id. The OS is reusing this id --- delete | |
277 | the old thread, and create a new one. */ | |
278 | thread_info *tp = find_thread_ptid (inf, ptid); | |
279 | if (tp != nullptr) | |
280 | delete_thread (tp); | |
4f8d22e3 | 281 | |
5d5658a1 | 282 | tp = new_thread (inf, ptid); |
76727919 | 283 | gdb::observers::new_thread.notify (tp); |
cfc01461 | 284 | |
0d06e24b | 285 | return tp; |
c906108c SS |
286 | } |
287 | ||
93815fbf | 288 | struct thread_info * |
5b6d1e4f PA |
289 | add_thread_with_info (process_stratum_target *targ, ptid_t ptid, |
290 | private_thread_info *priv) | |
93815fbf | 291 | { |
5b6d1e4f | 292 | thread_info *result = add_thread_silent (targ, ptid); |
93815fbf | 293 | |
7aabaf9d | 294 | result->priv.reset (priv); |
17faa917 | 295 | |
93815fbf | 296 | if (print_thread_events) |
a068643d | 297 | printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid).c_str ()); |
d4fc5b1e NR |
298 | |
299 | annotate_new_thread (); | |
93815fbf VP |
300 | return result; |
301 | } | |
302 | ||
17faa917 | 303 | struct thread_info * |
5b6d1e4f | 304 | add_thread (process_stratum_target *targ, ptid_t ptid) |
17faa917 | 305 | { |
5b6d1e4f | 306 | return add_thread_with_info (targ, ptid, NULL); |
17faa917 DJ |
307 | } |
308 | ||
7aabaf9d SM |
309 | private_thread_info::~private_thread_info () = default; |
310 | ||
12316564 YQ |
311 | thread_info::thread_info (struct inferior *inf_, ptid_t ptid_) |
312 | : ptid (ptid_), inf (inf_) | |
313 | { | |
314 | gdb_assert (inf_ != NULL); | |
315 | ||
316 | this->global_num = ++highest_thread_num; | |
317 | this->per_inf_num = ++inf_->highest_thread_num; | |
318 | ||
319 | /* Nothing to follow yet. */ | |
320 | memset (&this->pending_follow, 0, sizeof (this->pending_follow)); | |
321 | this->pending_follow.kind = TARGET_WAITKIND_SPURIOUS; | |
322 | this->suspend.waitstatus.kind = TARGET_WAITKIND_IGNORE; | |
323 | } | |
324 | ||
325 | thread_info::~thread_info () | |
326 | { | |
12316564 YQ |
327 | xfree (this->name); |
328 | } | |
329 | ||
08036331 PA |
330 | /* See gdbthread.h. */ |
331 | ||
332 | bool | |
333 | thread_info::deletable () const | |
334 | { | |
335 | /* If this is the current thread, or there's code out there that | |
336 | relies on it existing (refcount > 0) we can't delete yet. */ | |
5b6d1e4f | 337 | return refcount () == 0 && !is_current_thread (this); |
08036331 PA |
338 | } |
339 | ||
9844051a SM |
340 | /* See gdbthread.h. */ |
341 | regcache * | |
342 | thread_info::regcache () | |
343 | { | |
344 | return get_thread_regcache (this); | |
345 | } | |
346 | ||
347 | /* See gdbthread.h. */ | |
348 | gdbarch * | |
349 | thread_info::arch () | |
350 | { | |
351 | return this->regcache ()-> arch (); | |
352 | } | |
353 | ||
c2829269 PA |
354 | /* Add TP to the end of the step-over chain LIST_P. */ |
355 | ||
356 | static void | |
357 | step_over_chain_enqueue (struct thread_info **list_p, struct thread_info *tp) | |
358 | { | |
359 | gdb_assert (tp->step_over_next == NULL); | |
360 | gdb_assert (tp->step_over_prev == NULL); | |
361 | ||
362 | if (*list_p == NULL) | |
363 | { | |
364 | *list_p = tp; | |
365 | tp->step_over_prev = tp->step_over_next = tp; | |
366 | } | |
367 | else | |
368 | { | |
369 | struct thread_info *head = *list_p; | |
370 | struct thread_info *tail = head->step_over_prev; | |
371 | ||
372 | tp->step_over_prev = tail; | |
373 | tp->step_over_next = head; | |
374 | head->step_over_prev = tp; | |
375 | tail->step_over_next = tp; | |
376 | } | |
377 | } | |
378 | ||
9844051a | 379 | /* See gdbthread.h. */ |
c2829269 | 380 | |
9844051a SM |
381 | void |
382 | thread_step_over_chain_remove (thread_info **list_p, thread_info *tp) | |
c2829269 PA |
383 | { |
384 | gdb_assert (tp->step_over_next != NULL); | |
385 | gdb_assert (tp->step_over_prev != NULL); | |
386 | ||
387 | if (*list_p == tp) | |
388 | { | |
389 | if (tp == tp->step_over_next) | |
390 | *list_p = NULL; | |
391 | else | |
392 | *list_p = tp->step_over_next; | |
393 | } | |
394 | ||
395 | tp->step_over_prev->step_over_next = tp->step_over_next; | |
396 | tp->step_over_next->step_over_prev = tp->step_over_prev; | |
397 | tp->step_over_prev = tp->step_over_next = NULL; | |
398 | } | |
399 | ||
400 | /* See gdbthread.h. */ | |
401 | ||
9844051a SM |
402 | void |
403 | global_thread_step_over_chain_remove (thread_info *tp) | |
404 | { | |
405 | thread_step_over_chain_remove (&global_thread_step_over_chain_head, tp); | |
406 | } | |
407 | ||
408 | /* See gdbthread.h. */ | |
409 | ||
410 | thread_info * | |
411 | thread_step_over_chain_next (thread_info *chain_head, thread_info *tp) | |
c2829269 | 412 | { |
9844051a | 413 | thread_info *next = tp->step_over_next; |
c2829269 | 414 | |
9844051a SM |
415 | return next == chain_head ? NULL : next; |
416 | } | |
417 | ||
418 | /* See gdbthread.h. */ | |
419 | ||
420 | thread_info * | |
421 | global_thread_step_over_chain_next (thread_info *tp) | |
422 | { | |
423 | return thread_step_over_chain_next (global_thread_step_over_chain_head, tp); | |
c2829269 PA |
424 | } |
425 | ||
426 | /* See gdbthread.h. */ | |
427 | ||
428 | int | |
429 | thread_is_in_step_over_chain (struct thread_info *tp) | |
430 | { | |
431 | return (tp->step_over_next != NULL); | |
432 | } | |
433 | ||
434 | /* See gdbthread.h. */ | |
435 | ||
9844051a | 436 | int thread_step_over_chain_length (thread_info *tp) |
c2829269 | 437 | { |
9844051a SM |
438 | if (tp == nullptr) |
439 | return 0; | |
440 | ||
441 | int num = 1; | |
442 | thread_info *iter = tp->step_over_next; | |
443 | ||
444 | while (iter != tp) | |
445 | { | |
446 | num++; | |
447 | iter = iter->step_over_next; | |
448 | } | |
449 | ||
450 | return num; | |
451 | ||
452 | ||
c2829269 PA |
453 | } |
454 | ||
455 | /* See gdbthread.h. */ | |
456 | ||
457 | void | |
9844051a | 458 | global_thread_step_over_chain_enqueue (struct thread_info *tp) |
c2829269 | 459 | { |
9844051a SM |
460 | if (debug_infrun) |
461 | fprintf_unfiltered (gdb_stdlog, "enqueueing thread %ld in global step over chain\n", tp->ptid.lwp()); | |
462 | step_over_chain_enqueue (&global_thread_step_over_chain_head, tp); | |
c2829269 PA |
463 | } |
464 | ||
85102364 | 465 | /* Delete the thread referenced by THR. If SILENT, don't notify |
2eab46b1 JB |
466 | the observer of this exit. |
467 | ||
468 | THR must not be NULL or a failed assertion will be raised. */ | |
00431a78 | 469 | |
5e0b29c1 | 470 | static void |
00431a78 | 471 | delete_thread_1 (thread_info *thr, bool silent) |
c906108c | 472 | { |
2eab46b1 | 473 | gdb_assert (thr != nullptr); |
c906108c | 474 | |
2eab46b1 | 475 | struct thread_info *tp, *tpprev = NULL; |
c906108c | 476 | |
08036331 | 477 | for (tp = thr->inf->thread_list; tp; tpprev = tp, tp = tp->next) |
00431a78 | 478 | if (tp == thr) |
c906108c SS |
479 | break; |
480 | ||
481 | if (!tp) | |
482 | return; | |
483 | ||
803bdfe4 | 484 | set_thread_exited (tp, silent); |
c2829269 | 485 | |
803bdfe4 | 486 | if (!tp->deletable ()) |
8c25b497 | 487 | { |
4f8d22e3 PA |
488 | /* Will be really deleted some other time. */ |
489 | return; | |
490 | } | |
491 | ||
c906108c SS |
492 | if (tpprev) |
493 | tpprev->next = tp->next; | |
494 | else | |
08036331 | 495 | tp->inf->thread_list = tp->next; |
c906108c | 496 | |
12316564 | 497 | delete tp; |
c906108c SS |
498 | } |
499 | ||
3922b302 | 500 | /* See gdbthread.h. */ |
00431a78 | 501 | |
5e0b29c1 | 502 | void |
00431a78 | 503 | delete_thread (thread_info *thread) |
5e0b29c1 | 504 | { |
00431a78 | 505 | delete_thread_1 (thread, false /* not silent */); |
5e0b29c1 PA |
506 | } |
507 | ||
508 | void | |
00431a78 | 509 | delete_thread_silent (thread_info *thread) |
5e0b29c1 | 510 | { |
00431a78 | 511 | delete_thread_1 (thread, true /* silent */); |
5e0b29c1 PA |
512 | } |
513 | ||
1e92afda | 514 | struct thread_info * |
5d5658a1 | 515 | find_thread_global_id (int global_id) |
c906108c | 516 | { |
08036331 | 517 | for (thread_info *tp : all_threads ()) |
5d5658a1 PA |
518 | if (tp->global_num == global_id) |
519 | return tp; | |
520 | ||
521 | return NULL; | |
522 | } | |
523 | ||
524 | static struct thread_info * | |
525 | find_thread_id (struct inferior *inf, int thr_num) | |
526 | { | |
08036331 PA |
527 | for (thread_info *tp : inf->threads ()) |
528 | if (tp->per_inf_num == thr_num) | |
c906108c SS |
529 | return tp; |
530 | ||
531 | return NULL; | |
532 | } | |
533 | ||
5b6d1e4f | 534 | /* See gdbthread.h. */ |
e04ee09e | 535 | |
0d06e24b | 536 | struct thread_info * |
5b6d1e4f | 537 | find_thread_ptid (process_stratum_target *targ, ptid_t ptid) |
0d06e24b | 538 | { |
5b6d1e4f | 539 | inferior *inf = find_inferior_ptid (targ, ptid); |
08036331 PA |
540 | if (inf == NULL) |
541 | return NULL; | |
542 | return find_thread_ptid (inf, ptid); | |
543 | } | |
0d06e24b | 544 | |
08036331 PA |
545 | /* See gdbthread.h. */ |
546 | ||
547 | struct thread_info * | |
548 | find_thread_ptid (inferior *inf, ptid_t ptid) | |
549 | { | |
3922b302 | 550 | for (thread_info *tp : inf->non_exited_threads ()) |
9295a5a9 | 551 | if (tp->ptid == ptid) |
0d06e24b JM |
552 | return tp; |
553 | ||
554 | return NULL; | |
555 | } | |
556 | ||
e04ee09e KB |
557 | /* See gdbthread.h. */ |
558 | ||
559 | struct thread_info * | |
50a82723 KB |
560 | find_thread_by_handle (gdb::array_view<const gdb_byte> handle, |
561 | struct inferior *inf) | |
e04ee09e | 562 | { |
50a82723 KB |
563 | return target_thread_handle_to_thread_info (handle.data (), |
564 | handle.size (), | |
565 | inf); | |
e04ee09e KB |
566 | } |
567 | ||
0d06e24b JM |
568 | /* |
569 | * Thread iterator function. | |
570 | * | |
571 | * Calls a callback function once for each thread, so long as | |
572 | * the callback function returns false. If the callback function | |
573 | * returns true, the iteration will end and the current thread | |
ae0eee42 | 574 | * will be returned. This can be useful for implementing a |
0d06e24b JM |
575 | * search for a thread with arbitrary attributes, or for applying |
576 | * some operation to every thread. | |
577 | * | |
ae0eee42 | 578 | * FIXME: some of the existing functionality, such as |
0d06e24b JM |
579 | * "Thread apply all", might be rewritten using this functionality. |
580 | */ | |
581 | ||
582 | struct thread_info * | |
fd118b61 KB |
583 | iterate_over_threads (int (*callback) (struct thread_info *, void *), |
584 | void *data) | |
0d06e24b | 585 | { |
08036331 PA |
586 | for (thread_info *tp : all_threads_safe ()) |
587 | if ((*callback) (tp, data)) | |
588 | return tp; | |
0d06e24b JM |
589 | |
590 | return NULL; | |
591 | } | |
592 | ||
08036331 PA |
593 | /* See gdbthread.h. */ |
594 | ||
595 | bool | |
596 | any_thread_p () | |
597 | { | |
598 | for (thread_info *tp ATTRIBUTE_UNUSED : all_threads ()) | |
599 | return true; | |
600 | return false; | |
601 | } | |
602 | ||
20874c92 | 603 | int |
5b6d1e4f | 604 | thread_count (process_stratum_target *proc_target) |
20874c92 | 605 | { |
5b6d1e4f | 606 | auto rng = all_threads (proc_target); |
08036331 | 607 | return std::distance (rng.begin (), rng.end ()); |
20874c92 VP |
608 | } |
609 | ||
c6609450 PA |
610 | /* Return the number of non-exited threads in the thread list. */ |
611 | ||
612 | static int | |
613 | live_threads_count (void) | |
614 | { | |
08036331 PA |
615 | auto rng = all_non_exited_threads (); |
616 | return std::distance (rng.begin (), rng.end ()); | |
c6609450 PA |
617 | } |
618 | ||
c906108c | 619 | int |
5d5658a1 | 620 | valid_global_thread_id (int global_id) |
c906108c | 621 | { |
08036331 | 622 | for (thread_info *tp : all_threads ()) |
5d5658a1 | 623 | if (tp->global_num == global_id) |
c906108c SS |
624 | return 1; |
625 | ||
626 | return 0; | |
627 | } | |
628 | ||
5b6d1e4f PA |
629 | bool |
630 | in_thread_list (process_stratum_target *targ, ptid_t ptid) | |
c906108c | 631 | { |
5b6d1e4f | 632 | return find_thread_ptid (targ, ptid) != nullptr; |
c906108c | 633 | } |
8926118c | 634 | |
00431a78 | 635 | /* Finds the first thread of the inferior. */ |
bad34192 | 636 | |
00431a78 PA |
637 | thread_info * |
638 | first_thread_of_inferior (inferior *inf) | |
bad34192 | 639 | { |
08036331 | 640 | return inf->thread_list; |
bad34192 PA |
641 | } |
642 | ||
00431a78 PA |
643 | thread_info * |
644 | any_thread_of_inferior (inferior *inf) | |
2277426b | 645 | { |
00431a78 | 646 | gdb_assert (inf->pid != 0); |
32990ada PA |
647 | |
648 | /* Prefer the current thread. */ | |
00431a78 | 649 | if (inf == current_inferior ()) |
32990ada PA |
650 | return inferior_thread (); |
651 | ||
08036331 PA |
652 | for (thread_info *tp : inf->non_exited_threads ()) |
653 | return tp; | |
2277426b PA |
654 | |
655 | return NULL; | |
656 | } | |
657 | ||
00431a78 PA |
658 | thread_info * |
659 | any_live_thread_of_inferior (inferior *inf) | |
6c95b8df | 660 | { |
32990ada | 661 | struct thread_info *curr_tp = NULL; |
9941e0c5 | 662 | struct thread_info *tp_executing = NULL; |
6c95b8df | 663 | |
00431a78 | 664 | gdb_assert (inf != NULL && inf->pid != 0); |
32990ada PA |
665 | |
666 | /* Prefer the current thread if it's not executing. */ | |
00431a78 | 667 | if (inferior_ptid != null_ptid && current_inferior () == inf) |
32990ada PA |
668 | { |
669 | /* If the current thread is dead, forget it. If it's not | |
670 | executing, use it. Otherwise, still choose it (below), but | |
671 | only if no other non-executing thread is found. */ | |
672 | curr_tp = inferior_thread (); | |
673 | if (curr_tp->state == THREAD_EXITED) | |
674 | curr_tp = NULL; | |
675 | else if (!curr_tp->executing) | |
676 | return curr_tp; | |
677 | } | |
678 | ||
08036331 PA |
679 | for (thread_info *tp : inf->non_exited_threads ()) |
680 | { | |
681 | if (!tp->executing) | |
682 | return tp; | |
32990ada | 683 | |
08036331 PA |
684 | tp_executing = tp; |
685 | } | |
6c95b8df | 686 | |
32990ada PA |
687 | /* If both the current thread and all live threads are executing, |
688 | prefer the current thread. */ | |
689 | if (curr_tp != NULL) | |
690 | return curr_tp; | |
691 | ||
692 | /* Otherwise, just return an executing thread, if any. */ | |
9941e0c5 | 693 | return tp_executing; |
6c95b8df PA |
694 | } |
695 | ||
c378eb4e | 696 | /* Return true if TP is an active thread. */ |
f3f8ece4 PA |
697 | static bool |
698 | thread_alive (thread_info *tp) | |
c906108c | 699 | { |
30596231 | 700 | if (tp->state == THREAD_EXITED) |
f3f8ece4 PA |
701 | return false; |
702 | ||
703 | /* Ensure we're looking at the right target stack. */ | |
704 | gdb_assert (tp->inf == current_inferior ()); | |
705 | ||
706 | return target_thread_alive (tp->ptid); | |
707 | } | |
708 | ||
709 | /* Switch to thread TP if it is alive. Returns true if successfully | |
710 | switched, false otherwise. */ | |
711 | ||
712 | static bool | |
713 | switch_to_thread_if_alive (thread_info *thr) | |
714 | { | |
715 | scoped_restore_current_thread restore_thread; | |
716 | ||
717 | /* Switch inferior first, so that we're looking at the right target | |
718 | stack. */ | |
719 | switch_to_inferior_no_thread (thr->inf); | |
720 | ||
721 | if (thread_alive (thr)) | |
722 | { | |
723 | switch_to_thread (thr); | |
724 | restore_thread.dont_restore (); | |
725 | return true; | |
726 | } | |
727 | ||
728 | return false; | |
c906108c SS |
729 | } |
730 | ||
e8032dde PA |
731 | /* See gdbthreads.h. */ |
732 | ||
733 | void | |
fba45db2 | 734 | prune_threads (void) |
c906108c | 735 | { |
f3f8ece4 PA |
736 | scoped_restore_current_thread restore_thread; |
737 | ||
08036331 | 738 | for (thread_info *tp : all_threads_safe ()) |
f3f8ece4 PA |
739 | { |
740 | switch_to_inferior_no_thread (tp->inf); | |
741 | ||
742 | if (!thread_alive (tp)) | |
743 | delete_thread (tp); | |
744 | } | |
c906108c SS |
745 | } |
746 | ||
8a06aea7 PA |
747 | /* See gdbthreads.h. */ |
748 | ||
749 | void | |
750 | delete_exited_threads (void) | |
751 | { | |
08036331 PA |
752 | for (thread_info *tp : all_threads_safe ()) |
753 | if (tp->state == THREAD_EXITED) | |
754 | delete_thread (tp); | |
8a06aea7 PA |
755 | } |
756 | ||
85102364 | 757 | /* Return true value if stack temporaries are enabled for the thread |
00431a78 | 758 | TP. */ |
6c659fc2 | 759 | |
fdf07f3a | 760 | bool |
00431a78 | 761 | thread_stack_temporaries_enabled_p (thread_info *tp) |
6c659fc2 | 762 | { |
6c659fc2 | 763 | if (tp == NULL) |
fdf07f3a | 764 | return false; |
6c659fc2 SC |
765 | else |
766 | return tp->stack_temporaries_enabled; | |
767 | } | |
768 | ||
769 | /* Push V on to the stack temporaries of the thread with id PTID. */ | |
770 | ||
771 | void | |
00431a78 | 772 | push_thread_stack_temporary (thread_info *tp, struct value *v) |
6c659fc2 | 773 | { |
6c659fc2 | 774 | gdb_assert (tp != NULL && tp->stack_temporaries_enabled); |
fdf07f3a | 775 | tp->stack_temporaries.push_back (v); |
6c659fc2 SC |
776 | } |
777 | ||
fdf07f3a | 778 | /* Return true if VAL is among the stack temporaries of the thread |
00431a78 | 779 | TP. Return false otherwise. */ |
6c659fc2 | 780 | |
fdf07f3a | 781 | bool |
00431a78 | 782 | value_in_thread_stack_temporaries (struct value *val, thread_info *tp) |
6c659fc2 | 783 | { |
6c659fc2 | 784 | gdb_assert (tp != NULL && tp->stack_temporaries_enabled); |
52941706 | 785 | for (value *v : tp->stack_temporaries) |
fdf07f3a TT |
786 | if (v == val) |
787 | return true; | |
6c659fc2 | 788 | |
fdf07f3a | 789 | return false; |
6c659fc2 SC |
790 | } |
791 | ||
792 | /* Return the last of the stack temporaries for thread with id PTID. | |
793 | Return NULL if there are no stack temporaries for the thread. */ | |
794 | ||
00431a78 PA |
795 | value * |
796 | get_last_thread_stack_temporary (thread_info *tp) | |
6c659fc2 SC |
797 | { |
798 | struct value *lastval = NULL; | |
6c659fc2 SC |
799 | |
800 | gdb_assert (tp != NULL); | |
fdf07f3a TT |
801 | if (!tp->stack_temporaries.empty ()) |
802 | lastval = tp->stack_temporaries.back (); | |
6c659fc2 SC |
803 | |
804 | return lastval; | |
805 | } | |
806 | ||
5231c1fd | 807 | void |
5b6d1e4f PA |
808 | thread_change_ptid (process_stratum_target *targ, |
809 | ptid_t old_ptid, ptid_t new_ptid) | |
5231c1fd | 810 | { |
82f73884 PA |
811 | struct inferior *inf; |
812 | struct thread_info *tp; | |
813 | ||
814 | /* It can happen that what we knew as the target inferior id | |
815 | changes. E.g, target remote may only discover the remote process | |
816 | pid after adding the inferior to GDB's list. */ | |
5b6d1e4f | 817 | inf = find_inferior_ptid (targ, old_ptid); |
e99b03dc | 818 | inf->pid = new_ptid.pid (); |
82f73884 | 819 | |
08036331 | 820 | tp = find_thread_ptid (inf, old_ptid); |
5231c1fd PA |
821 | tp->ptid = new_ptid; |
822 | ||
76727919 | 823 | gdb::observers::thread_ptid_changed.notify (old_ptid, new_ptid); |
5231c1fd PA |
824 | } |
825 | ||
372316f1 PA |
826 | /* See gdbthread.h. */ |
827 | ||
828 | void | |
5b6d1e4f | 829 | set_resumed (process_stratum_target *targ, ptid_t ptid, bool resumed) |
372316f1 | 830 | { |
5b6d1e4f | 831 | for (thread_info *tp : all_non_exited_threads (targ, ptid)) |
08036331 | 832 | tp->resumed = resumed; |
372316f1 PA |
833 | } |
834 | ||
4d9d9d04 PA |
835 | /* Helper for set_running, that marks one thread either running or |
836 | stopped. */ | |
837 | ||
719546c4 SM |
838 | static bool |
839 | set_running_thread (struct thread_info *tp, bool running) | |
4d9d9d04 | 840 | { |
719546c4 | 841 | bool started = false; |
4d9d9d04 PA |
842 | |
843 | if (running && tp->state == THREAD_STOPPED) | |
719546c4 | 844 | started = true; |
4d9d9d04 PA |
845 | tp->state = running ? THREAD_RUNNING : THREAD_STOPPED; |
846 | ||
847 | if (!running) | |
848 | { | |
849 | /* If the thread is now marked stopped, remove it from | |
850 | the step-over queue, so that we don't try to resume | |
851 | it until the user wants it to. */ | |
852 | if (tp->step_over_next != NULL) | |
7bd43605 | 853 | global_thread_step_over_chain_remove (tp); |
4d9d9d04 PA |
854 | } |
855 | ||
856 | return started; | |
857 | } | |
858 | ||
00431a78 PA |
859 | /* See gdbthread.h. */ |
860 | ||
861 | void | |
862 | thread_info::set_running (bool running) | |
863 | { | |
864 | if (set_running_thread (this, running)) | |
865 | gdb::observers::target_resumed.notify (this->ptid); | |
866 | } | |
867 | ||
e1ac3328 | 868 | void |
5b6d1e4f | 869 | set_running (process_stratum_target *targ, ptid_t ptid, bool running) |
e1ac3328 | 870 | { |
08036331 PA |
871 | /* We try not to notify the observer if no thread has actually |
872 | changed the running state -- merely to reduce the number of | |
873 | messages to the MI frontend. A frontend is supposed to handle | |
874 | multiple *running notifications just fine. */ | |
875 | bool any_started = false; | |
e1ac3328 | 876 | |
5b6d1e4f | 877 | for (thread_info *tp : all_non_exited_threads (targ, ptid)) |
08036331 PA |
878 | if (set_running_thread (tp, running)) |
879 | any_started = true; | |
4d9d9d04 | 880 | |
4d9d9d04 | 881 | if (any_started) |
76727919 | 882 | gdb::observers::target_resumed.notify (ptid); |
e1ac3328 VP |
883 | } |
884 | ||
8ea051c5 | 885 | |
f2ffa92b PA |
886 | /* Helper for set_executing. Set's the thread's 'executing' field |
887 | from EXECUTING, and if EXECUTING is true also clears the thread's | |
888 | stop_pc. */ | |
889 | ||
890 | static void | |
891 | set_executing_thread (thread_info *thr, bool executing) | |
892 | { | |
893 | thr->executing = executing; | |
894 | if (executing) | |
895 | thr->suspend.stop_pc = ~(CORE_ADDR) 0; | |
896 | } | |
897 | ||
8ea051c5 | 898 | void |
5b6d1e4f | 899 | set_executing (process_stratum_target *targ, ptid_t ptid, bool executing) |
8ea051c5 | 900 | { |
5b6d1e4f | 901 | for (thread_info *tp : all_non_exited_threads (targ, ptid)) |
08036331 | 902 | set_executing_thread (tp, executing); |
8ea051c5 | 903 | |
08036331 | 904 | /* It only takes one running thread to spawn more threads. */ |
b57bacec | 905 | if (executing) |
5b6d1e4f | 906 | targ->threads_executing = true; |
b57bacec PA |
907 | /* Only clear the flag if the caller is telling us everything is |
908 | stopped. */ | |
9295a5a9 | 909 | else if (minus_one_ptid == ptid) |
5b6d1e4f | 910 | targ->threads_executing = false; |
b57bacec PA |
911 | } |
912 | ||
913 | /* See gdbthread.h. */ | |
914 | ||
5b6d1e4f PA |
915 | bool |
916 | threads_are_executing (process_stratum_target *target) | |
b57bacec | 917 | { |
5b6d1e4f | 918 | return target->threads_executing; |
8ea051c5 PA |
919 | } |
920 | ||
252fbfc8 | 921 | void |
5b6d1e4f | 922 | set_stop_requested (process_stratum_target *targ, ptid_t ptid, bool stop) |
252fbfc8 | 923 | { |
5b6d1e4f | 924 | for (thread_info *tp : all_non_exited_threads (targ, ptid)) |
08036331 | 925 | tp->stop_requested = stop; |
252fbfc8 PA |
926 | |
927 | /* Call the stop requested observer so other components of GDB can | |
928 | react to this request. */ | |
929 | if (stop) | |
76727919 | 930 | gdb::observers::thread_stop_requested.notify (ptid); |
252fbfc8 PA |
931 | } |
932 | ||
29f49a6a | 933 | void |
5b6d1e4f | 934 | finish_thread_state (process_stratum_target *targ, ptid_t ptid) |
29f49a6a | 935 | { |
08036331 | 936 | bool any_started = false; |
29f49a6a | 937 | |
5b6d1e4f | 938 | for (thread_info *tp : all_non_exited_threads (targ, ptid)) |
08036331 PA |
939 | if (set_running_thread (tp, tp->executing)) |
940 | any_started = true; | |
29f49a6a PA |
941 | |
942 | if (any_started) | |
76727919 | 943 | gdb::observers::target_resumed.notify (ptid); |
29f49a6a PA |
944 | } |
945 | ||
a911d87a PA |
946 | /* See gdbthread.h. */ |
947 | ||
948 | void | |
949 | validate_registers_access (void) | |
950 | { | |
951 | /* No selected thread, no registers. */ | |
9295a5a9 | 952 | if (inferior_ptid == null_ptid) |
a911d87a PA |
953 | error (_("No thread selected.")); |
954 | ||
00431a78 PA |
955 | thread_info *tp = inferior_thread (); |
956 | ||
a911d87a | 957 | /* Don't try to read from a dead thread. */ |
00431a78 | 958 | if (tp->state == THREAD_EXITED) |
a911d87a PA |
959 | error (_("The current thread has terminated")); |
960 | ||
961 | /* ... or from a spinning thread. FIXME: This isn't actually fully | |
962 | correct. It'll allow an user-requested access (e.g., "print $pc" | |
963 | at the prompt) when a thread is not executing for some internal | |
964 | reason, but is marked running from the user's perspective. E.g., | |
965 | the thread is waiting for its turn in the step-over queue. */ | |
00431a78 | 966 | if (tp->executing) |
a911d87a PA |
967 | error (_("Selected thread is running.")); |
968 | } | |
969 | ||
cf77c34e MM |
970 | /* See gdbthread.h. */ |
971 | ||
972 | bool | |
00431a78 | 973 | can_access_registers_thread (thread_info *thread) |
cf77c34e MM |
974 | { |
975 | /* No thread, no registers. */ | |
00431a78 | 976 | if (thread == NULL) |
cf77c34e MM |
977 | return false; |
978 | ||
979 | /* Don't try to read from a dead thread. */ | |
00431a78 | 980 | if (thread->state == THREAD_EXITED) |
cf77c34e MM |
981 | return false; |
982 | ||
983 | /* ... or from a spinning thread. FIXME: see validate_registers_access. */ | |
00431a78 | 984 | if (thread->executing) |
cf77c34e MM |
985 | return false; |
986 | ||
987 | return true; | |
988 | } | |
989 | ||
ce4c476a PA |
990 | int |
991 | pc_in_thread_step_range (CORE_ADDR pc, struct thread_info *thread) | |
992 | { | |
993 | return (pc >= thread->control.step_range_start | |
994 | && pc < thread->control.step_range_end); | |
995 | } | |
996 | ||
5d5658a1 PA |
997 | /* Helper for print_thread_info. Returns true if THR should be |
998 | printed. If REQUESTED_THREADS, a list of GDB ids/ranges, is not | |
999 | NULL, only print THR if its ID is included in the list. GLOBAL_IDS | |
1000 | is true if REQUESTED_THREADS is list of global IDs, false if a list | |
1001 | of per-inferior thread ids. If PID is not -1, only print THR if it | |
1002 | is a thread from the process PID. Otherwise, threads from all | |
1003 | attached PIDs are printed. If both REQUESTED_THREADS is not NULL | |
1004 | and PID is not -1, then the thread is printed if it belongs to the | |
1005 | specified process. Otherwise, an error is raised. */ | |
1006 | ||
1007 | static int | |
1008 | should_print_thread (const char *requested_threads, int default_inf_num, | |
1009 | int global_ids, int pid, struct thread_info *thr) | |
1010 | { | |
1011 | if (requested_threads != NULL && *requested_threads != '\0') | |
1012 | { | |
1013 | int in_list; | |
1014 | ||
1015 | if (global_ids) | |
1016 | in_list = number_is_in_list (requested_threads, thr->global_num); | |
1017 | else | |
1018 | in_list = tid_is_in_list (requested_threads, default_inf_num, | |
1019 | thr->inf->num, thr->per_inf_num); | |
1020 | if (!in_list) | |
1021 | return 0; | |
1022 | } | |
1023 | ||
e99b03dc | 1024 | if (pid != -1 && thr->ptid.pid () != pid) |
5d5658a1 PA |
1025 | { |
1026 | if (requested_threads != NULL && *requested_threads != '\0') | |
1027 | error (_("Requested thread not found in requested process")); | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | if (thr->state == THREAD_EXITED) | |
1032 | return 0; | |
1033 | ||
1034 | return 1; | |
1035 | } | |
1036 | ||
75acb486 PA |
1037 | /* Return the string to display in "info threads"'s "Target Id" |
1038 | column, for TP. */ | |
1039 | ||
1040 | static std::string | |
1041 | thread_target_id_str (thread_info *tp) | |
1042 | { | |
a068643d | 1043 | std::string target_id = target_pid_to_str (tp->ptid); |
75acb486 PA |
1044 | const char *extra_info = target_extra_thread_info (tp); |
1045 | const char *name = tp->name != nullptr ? tp->name : target_thread_name (tp); | |
1046 | ||
1047 | if (extra_info != nullptr && name != nullptr) | |
a068643d TT |
1048 | return string_printf ("%s \"%s\" (%s)", target_id.c_str (), name, |
1049 | extra_info); | |
75acb486 | 1050 | else if (extra_info != nullptr) |
a068643d | 1051 | return string_printf ("%s (%s)", target_id.c_str (), extra_info); |
75acb486 | 1052 | else if (name != nullptr) |
a068643d | 1053 | return string_printf ("%s \"%s\"", target_id.c_str (), name); |
75acb486 PA |
1054 | else |
1055 | return target_id; | |
1056 | } | |
1057 | ||
5d5658a1 PA |
1058 | /* Like print_thread_info, but in addition, GLOBAL_IDS indicates |
1059 | whether REQUESTED_THREADS is a list of global or per-inferior | |
1060 | thread ids. */ | |
1061 | ||
1062 | static void | |
1d12d88f | 1063 | print_thread_info_1 (struct ui_out *uiout, const char *requested_threads, |
5d5658a1 PA |
1064 | int global_ids, int pid, |
1065 | int show_global_ids) | |
c906108c | 1066 | { |
5d5658a1 | 1067 | int default_inf_num = current_inferior ()->num; |
c906108c | 1068 | |
dc146f7c | 1069 | update_thread_list (); |
00431a78 PA |
1070 | |
1071 | /* Whether we saw any thread. */ | |
1072 | bool any_thread = false; | |
1073 | /* Whether the current thread is exited. */ | |
1074 | bool current_exited = false; | |
1075 | ||
1076 | thread_info *current_thread = (inferior_ptid != null_ptid | |
1077 | ? inferior_thread () : NULL); | |
4f8d22e3 | 1078 | |
f8cc3da6 TT |
1079 | { |
1080 | /* For backward compatibility, we make a list for MI. A table is | |
1081 | preferable for the CLI, though, because it shows table | |
1082 | headers. */ | |
1083 | gdb::optional<ui_out_emit_list> list_emitter; | |
1084 | gdb::optional<ui_out_emit_table> table_emitter; | |
1085 | ||
f3f8ece4 PA |
1086 | /* We'll be switching threads temporarily below. */ |
1087 | scoped_restore_current_thread restore_thread; | |
1088 | ||
f8cc3da6 TT |
1089 | if (uiout->is_mi_like_p ()) |
1090 | list_emitter.emplace (uiout, "threads"); | |
1091 | else | |
1092 | { | |
1093 | int n_threads = 0; | |
75acb486 PA |
1094 | /* The width of the "Target Id" column. Grown below to |
1095 | accommodate the largest entry. */ | |
1096 | size_t target_id_col_width = 17; | |
a7658b96 | 1097 | |
08036331 | 1098 | for (thread_info *tp : all_threads ()) |
f8cc3da6 TT |
1099 | { |
1100 | if (!should_print_thread (requested_threads, default_inf_num, | |
1101 | global_ids, pid, tp)) | |
1102 | continue; | |
a7658b96 | 1103 | |
75acb486 PA |
1104 | if (!uiout->is_mi_like_p ()) |
1105 | { | |
f3f8ece4 PA |
1106 | /* Switch inferiors so we're looking at the right |
1107 | target stack. */ | |
1108 | switch_to_inferior_no_thread (tp->inf); | |
1109 | ||
75acb486 PA |
1110 | target_id_col_width |
1111 | = std::max (target_id_col_width, | |
1112 | thread_target_id_str (tp).size ()); | |
1113 | } | |
1114 | ||
f8cc3da6 TT |
1115 | ++n_threads; |
1116 | } | |
a7658b96 | 1117 | |
f8cc3da6 TT |
1118 | if (n_threads == 0) |
1119 | { | |
1120 | if (requested_threads == NULL || *requested_threads == '\0') | |
1121 | uiout->message (_("No threads.\n")); | |
1122 | else | |
1123 | uiout->message (_("No threads match '%s'.\n"), | |
1124 | requested_threads); | |
1125 | return; | |
1126 | } | |
a7658b96 | 1127 | |
0d64823e | 1128 | table_emitter.emplace (uiout, show_global_ids ? 5 : 4, |
f8cc3da6 | 1129 | n_threads, "threads"); |
a7658b96 | 1130 | |
f8cc3da6 | 1131 | uiout->table_header (1, ui_left, "current", ""); |
0d64823e SM |
1132 | uiout->table_header (4, ui_left, "id-in-tg", "Id"); |
1133 | if (show_global_ids) | |
f8cc3da6 | 1134 | uiout->table_header (4, ui_left, "id", "GId"); |
75acb486 PA |
1135 | uiout->table_header (target_id_col_width, ui_left, |
1136 | "target-id", "Target Id"); | |
f8cc3da6 TT |
1137 | uiout->table_header (1, ui_left, "frame", "Frame"); |
1138 | uiout->table_body (); | |
1139 | } | |
a7658b96 | 1140 | |
08036331 PA |
1141 | for (inferior *inf : all_inferiors ()) |
1142 | for (thread_info *tp : inf->threads ()) | |
3061113b SM |
1143 | { |
1144 | int core; | |
1145 | ||
1146 | any_thread = true; | |
1147 | if (tp == current_thread && tp->state == THREAD_EXITED) | |
1148 | current_exited = true; | |
1149 | ||
1150 | if (!should_print_thread (requested_threads, default_inf_num, | |
1151 | global_ids, pid, tp)) | |
1152 | continue; | |
1153 | ||
1154 | ui_out_emit_tuple tuple_emitter (uiout, NULL); | |
1155 | ||
1156 | if (!uiout->is_mi_like_p ()) | |
1157 | { | |
1158 | if (tp == current_thread) | |
1159 | uiout->field_string ("current", "*"); | |
1160 | else | |
1161 | uiout->field_skip ("current"); | |
1162 | ||
1163 | uiout->field_string ("id-in-tg", print_thread_id (tp)); | |
1164 | } | |
1165 | ||
1166 | if (show_global_ids || uiout->is_mi_like_p ()) | |
1167 | uiout->field_signed ("id", tp->global_num); | |
1168 | ||
f3f8ece4 PA |
1169 | /* Switch to the thread (and inferior / target). */ |
1170 | switch_to_thread (tp); | |
1171 | ||
3061113b SM |
1172 | /* For the CLI, we stuff everything into the target-id field. |
1173 | This is a gross hack to make the output come out looking | |
1174 | correct. The underlying problem here is that ui-out has no | |
1175 | way to specify that a field's space allocation should be | |
1176 | shared by several fields. For MI, we do the right thing | |
1177 | instead. */ | |
1178 | ||
1179 | if (uiout->is_mi_like_p ()) | |
1180 | { | |
1181 | uiout->field_string ("target-id", target_pid_to_str (tp->ptid)); | |
1182 | ||
1183 | const char *extra_info = target_extra_thread_info (tp); | |
1184 | if (extra_info != nullptr) | |
1185 | uiout->field_string ("details", extra_info); | |
1186 | ||
1187 | const char *name = (tp->name != nullptr | |
1188 | ? tp->name | |
1189 | : target_thread_name (tp)); | |
1190 | if (name != NULL) | |
1191 | uiout->field_string ("name", name); | |
1192 | } | |
1193 | else | |
1194 | { | |
1195 | uiout->field_string ("target-id", | |
1196 | thread_target_id_str (tp).c_str ()); | |
1197 | } | |
1198 | ||
1199 | if (tp->state == THREAD_RUNNING) | |
1200 | uiout->text ("(running)\n"); | |
1201 | else | |
1202 | { | |
f3f8ece4 | 1203 | /* The switch above put us at the top of the stack (leaf |
3061113b | 1204 | frame). */ |
3061113b SM |
1205 | print_stack_frame (get_selected_frame (NULL), |
1206 | /* For MI output, print frame level. */ | |
1207 | uiout->is_mi_like_p (), | |
1208 | LOCATION, 0); | |
1209 | } | |
1210 | ||
1211 | if (uiout->is_mi_like_p ()) | |
1212 | { | |
1213 | const char *state = "stopped"; | |
1214 | ||
1215 | if (tp->state == THREAD_RUNNING) | |
1216 | state = "running"; | |
1217 | uiout->field_string ("state", state); | |
1218 | } | |
1219 | ||
1220 | core = target_core_of_thread (tp->ptid); | |
1221 | if (uiout->is_mi_like_p () && core != -1) | |
1222 | uiout->field_signed ("core", core); | |
1223 | } | |
c906108c | 1224 | |
5ed8105e | 1225 | /* This end scope restores the current thread and the frame |
f8cc3da6 TT |
1226 | selected before the "info threads" command, and it finishes the |
1227 | ui-out list or table. */ | |
5ed8105e PA |
1228 | } |
1229 | ||
aea5b279 | 1230 | if (pid == -1 && requested_threads == NULL) |
8e8901c5 | 1231 | { |
00431a78 | 1232 | if (uiout->is_mi_like_p () && inferior_ptid != null_ptid) |
381befee | 1233 | uiout->field_signed ("current-thread-id", current_thread->global_num); |
5d5658a1 | 1234 | |
00431a78 | 1235 | if (inferior_ptid != null_ptid && current_exited) |
112e8700 | 1236 | uiout->message ("\n\ |
5d5658a1 PA |
1237 | The current thread <Thread ID %s> has terminated. See `help thread'.\n", |
1238 | print_thread_id (inferior_thread ())); | |
00431a78 | 1239 | else if (any_thread && inferior_ptid == null_ptid) |
112e8700 | 1240 | uiout->message ("\n\ |
d729566a | 1241 | No selected thread. See `help thread'.\n"); |
c906108c | 1242 | } |
c906108c SS |
1243 | } |
1244 | ||
5d5658a1 | 1245 | /* See gdbthread.h. */ |
8e8901c5 | 1246 | |
5d5658a1 | 1247 | void |
24c54127 TT |
1248 | print_thread_info (struct ui_out *uiout, const char *requested_threads, |
1249 | int pid) | |
5d5658a1 PA |
1250 | { |
1251 | print_thread_info_1 (uiout, requested_threads, 1, pid, 0); | |
1252 | } | |
1253 | ||
54d66006 PA |
1254 | /* The options for the "info threads" command. */ |
1255 | ||
1256 | struct info_threads_opts | |
1257 | { | |
1258 | /* For "-gid". */ | |
491144b5 | 1259 | bool show_global_ids = false; |
54d66006 PA |
1260 | }; |
1261 | ||
1262 | static const gdb::option::option_def info_threads_option_defs[] = { | |
1263 | ||
1264 | gdb::option::flag_option_def<info_threads_opts> { | |
1265 | "gid", | |
1266 | [] (info_threads_opts *opts) { return &opts->show_global_ids; }, | |
1267 | N_("Show global thread IDs."), | |
1268 | }, | |
1269 | ||
1270 | }; | |
1271 | ||
1272 | /* Create an option_def_group for the "info threads" options, with | |
1273 | IT_OPTS as context. */ | |
1274 | ||
1275 | static inline gdb::option::option_def_group | |
1276 | make_info_threads_options_def_group (info_threads_opts *it_opts) | |
1277 | { | |
1278 | return {{info_threads_option_defs}, it_opts}; | |
1279 | } | |
1280 | ||
5d5658a1 | 1281 | /* Implementation of the "info threads" command. |
60f98dde MS |
1282 | |
1283 | Note: this has the drawback that it _really_ switches | |
ae0eee42 PA |
1284 | threads, which frees the frame cache. A no-side |
1285 | effects info-threads command would be nicer. */ | |
8e8901c5 VP |
1286 | |
1287 | static void | |
1d12d88f | 1288 | info_threads_command (const char *arg, int from_tty) |
8e8901c5 | 1289 | { |
54d66006 PA |
1290 | info_threads_opts it_opts; |
1291 | ||
1292 | auto grp = make_info_threads_options_def_group (&it_opts); | |
1293 | gdb::option::process_options | |
1294 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, grp); | |
1295 | ||
1296 | print_thread_info_1 (current_uiout, arg, 0, -1, it_opts.show_global_ids); | |
1297 | } | |
1298 | ||
1299 | /* Completer for the "info threads" command. */ | |
c84f6bbf | 1300 | |
54d66006 PA |
1301 | static void |
1302 | info_threads_command_completer (struct cmd_list_element *ignore, | |
1303 | completion_tracker &tracker, | |
1304 | const char *text, const char *word_ignored) | |
1305 | { | |
1306 | const auto grp = make_info_threads_options_def_group (nullptr); | |
1307 | ||
1308 | if (gdb::option::complete_options | |
1309 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, grp)) | |
1310 | return; | |
1311 | ||
1312 | /* Convenience to let the user know what the option can accept. */ | |
1313 | if (*text == '\0') | |
c84f6bbf | 1314 | { |
54d66006 PA |
1315 | gdb::option::complete_on_all_options (tracker, grp); |
1316 | /* Keep this "ID" in sync with what "help info threads" | |
1317 | says. */ | |
1318 | tracker.add_completion (make_unique_xstrdup ("ID")); | |
c84f6bbf | 1319 | } |
8e8901c5 VP |
1320 | } |
1321 | ||
6efcd9a8 PA |
1322 | /* See gdbthread.h. */ |
1323 | ||
1324 | void | |
1325 | switch_to_thread_no_regs (struct thread_info *thread) | |
1326 | { | |
3a3fd0fd | 1327 | struct inferior *inf = thread->inf; |
6efcd9a8 | 1328 | |
6efcd9a8 PA |
1329 | set_current_program_space (inf->pspace); |
1330 | set_current_inferior (inf); | |
1331 | ||
3922b302 PA |
1332 | current_thread_ = thread; |
1333 | inferior_ptid = current_thread_->ptid; | |
6efcd9a8 PA |
1334 | } |
1335 | ||
00431a78 | 1336 | /* See gdbthread.h. */ |
c906108c | 1337 | |
00431a78 | 1338 | void |
3a3fd0fd | 1339 | switch_to_no_thread () |
c906108c | 1340 | { |
3922b302 | 1341 | if (current_thread_ == nullptr) |
3a3fd0fd | 1342 | return; |
6c95b8df | 1343 | |
3922b302 | 1344 | current_thread_ = nullptr; |
3a3fd0fd PA |
1345 | inferior_ptid = null_ptid; |
1346 | reinit_frame_cache (); | |
3a3fd0fd PA |
1347 | } |
1348 | ||
00431a78 | 1349 | /* See gdbthread.h. */ |
6c95b8df | 1350 | |
00431a78 | 1351 | void |
3a3fd0fd PA |
1352 | switch_to_thread (thread_info *thr) |
1353 | { | |
1354 | gdb_assert (thr != NULL); | |
1355 | ||
5b6d1e4f | 1356 | if (is_current_thread (thr)) |
c906108c SS |
1357 | return; |
1358 | ||
3a3fd0fd PA |
1359 | switch_to_thread_no_regs (thr); |
1360 | ||
35f196d9 | 1361 | reinit_frame_cache (); |
c906108c SS |
1362 | } |
1363 | ||
268a13a5 | 1364 | /* See gdbsupport/common-gdbthread.h. */ |
3a3fd0fd PA |
1365 | |
1366 | void | |
5b6d1e4f | 1367 | switch_to_thread (process_stratum_target *proc_target, ptid_t ptid) |
c906108c | 1368 | { |
5b6d1e4f | 1369 | thread_info *thr = find_thread_ptid (proc_target, ptid); |
00431a78 | 1370 | switch_to_thread (thr); |
99b3d574 DP |
1371 | } |
1372 | ||
1373 | static void | |
4f8d22e3 | 1374 | restore_selected_frame (struct frame_id a_frame_id, int frame_level) |
99b3d574 | 1375 | { |
4f8d22e3 PA |
1376 | struct frame_info *frame = NULL; |
1377 | int count; | |
1378 | ||
eb8c0621 TT |
1379 | /* This means there was no selected frame. */ |
1380 | if (frame_level == -1) | |
1381 | { | |
1382 | select_frame (NULL); | |
1383 | return; | |
1384 | } | |
1385 | ||
4f8d22e3 PA |
1386 | gdb_assert (frame_level >= 0); |
1387 | ||
1388 | /* Restore by level first, check if the frame id is the same as | |
1389 | expected. If that fails, try restoring by frame id. If that | |
1390 | fails, nothing to do, just warn the user. */ | |
1391 | ||
1392 | count = frame_level; | |
1393 | frame = find_relative_frame (get_current_frame (), &count); | |
1394 | if (count == 0 | |
1395 | && frame != NULL | |
005ca36a JB |
1396 | /* The frame ids must match - either both valid or both outer_frame_id. |
1397 | The latter case is not failsafe, but since it's highly unlikely | |
4f8d22e3 PA |
1398 | the search by level finds the wrong frame, it's 99.9(9)% of |
1399 | the time (for all practical purposes) safe. */ | |
005ca36a | 1400 | && frame_id_eq (get_frame_id (frame), a_frame_id)) |
4f8d22e3 PA |
1401 | { |
1402 | /* Cool, all is fine. */ | |
1403 | select_frame (frame); | |
1404 | return; | |
1405 | } | |
99b3d574 | 1406 | |
4f8d22e3 PA |
1407 | frame = frame_find_by_id (a_frame_id); |
1408 | if (frame != NULL) | |
1409 | { | |
1410 | /* Cool, refound it. */ | |
1411 | select_frame (frame); | |
1412 | return; | |
1413 | } | |
99b3d574 | 1414 | |
0c501536 PA |
1415 | /* Nothing else to do, the frame layout really changed. Select the |
1416 | innermost stack frame. */ | |
1417 | select_frame (get_current_frame ()); | |
1418 | ||
1419 | /* Warn the user. */ | |
112e8700 | 1420 | if (frame_level > 0 && !current_uiout->is_mi_like_p ()) |
99b3d574 | 1421 | { |
3e43a32a | 1422 | warning (_("Couldn't restore frame #%d in " |
e0162910 | 1423 | "current thread. Bottom (innermost) frame selected:"), |
4f8d22e3 PA |
1424 | frame_level); |
1425 | /* For MI, we should probably have a notification about | |
1426 | current frame change. But this error is not very | |
1427 | likely, so don't bother for now. */ | |
08d72866 | 1428 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
1429 | } |
1430 | } | |
1431 | ||
873657b9 PA |
1432 | void |
1433 | scoped_restore_current_thread::restore () | |
6ecce94d | 1434 | { |
803bdfe4 YQ |
1435 | /* If an entry of thread_info was previously selected, it won't be |
1436 | deleted because we've increased its refcount. The thread represented | |
1437 | by this thread_info entry may have already exited (due to normal exit, | |
1438 | detach, etc), so the thread_info.state is THREAD_EXITED. */ | |
5ed8105e | 1439 | if (m_thread != NULL |
803bdfe4 YQ |
1440 | /* If the previously selected thread belonged to a process that has |
1441 | in the mean time exited (or killed, detached, etc.), then don't revert | |
1442 | back to it, but instead simply drop back to no thread selected. */ | |
5ed8105e PA |
1443 | && m_inf->pid != 0) |
1444 | switch_to_thread (m_thread); | |
88fc996f | 1445 | else |
53af73bf | 1446 | switch_to_inferior_no_thread (m_inf); |
94cc34af | 1447 | |
4f8d22e3 PA |
1448 | /* The running state of the originally selected thread may have |
1449 | changed, so we have to recheck it here. */ | |
9295a5a9 | 1450 | if (inferior_ptid != null_ptid |
5ed8105e | 1451 | && m_was_stopped |
00431a78 | 1452 | && m_thread->state == THREAD_STOPPED |
4f8d22e3 PA |
1453 | && target_has_registers |
1454 | && target_has_stack | |
1455 | && target_has_memory) | |
5ed8105e | 1456 | restore_selected_frame (m_selected_frame_id, m_selected_frame_level); |
873657b9 PA |
1457 | } |
1458 | ||
1459 | scoped_restore_current_thread::~scoped_restore_current_thread () | |
1460 | { | |
1461 | if (!m_dont_restore) | |
1462 | { | |
1463 | try | |
1464 | { | |
1465 | restore (); | |
1466 | } | |
1467 | catch (const gdb_exception &ex) | |
1468 | { | |
1469 | /* We're in a dtor, there's really nothing else we can do | |
1470 | but swallow the exception. */ | |
1471 | } | |
1472 | } | |
5d502164 | 1473 | |
5ed8105e PA |
1474 | if (m_thread != NULL) |
1475 | m_thread->decref (); | |
1476 | m_inf->decref (); | |
6ecce94d AC |
1477 | } |
1478 | ||
5ed8105e | 1479 | scoped_restore_current_thread::scoped_restore_current_thread () |
6ecce94d | 1480 | { |
5ed8105e PA |
1481 | m_thread = NULL; |
1482 | m_inf = current_inferior (); | |
4f8d22e3 | 1483 | |
9295a5a9 | 1484 | if (inferior_ptid != null_ptid) |
d729566a | 1485 | { |
00431a78 | 1486 | thread_info *tp = inferior_thread (); |
12316564 YQ |
1487 | struct frame_info *frame; |
1488 | ||
5ed8105e PA |
1489 | m_was_stopped = tp->state == THREAD_STOPPED; |
1490 | if (m_was_stopped | |
d729566a PA |
1491 | && target_has_registers |
1492 | && target_has_stack | |
1493 | && target_has_memory) | |
eb8c0621 TT |
1494 | { |
1495 | /* When processing internal events, there might not be a | |
1496 | selected frame. If we naively call get_selected_frame | |
1497 | here, then we can end up reading debuginfo for the | |
1498 | current frame, but we don't generally need the debuginfo | |
1499 | at this point. */ | |
1500 | frame = get_selected_frame_if_set (); | |
1501 | } | |
d729566a PA |
1502 | else |
1503 | frame = NULL; | |
4f8d22e3 | 1504 | |
4778a5f8 TV |
1505 | try |
1506 | { | |
1507 | m_selected_frame_id = get_frame_id (frame); | |
1508 | m_selected_frame_level = frame_relative_level (frame); | |
1509 | } | |
1510 | catch (const gdb_exception_error &ex) | |
1511 | { | |
1512 | m_selected_frame_id = null_frame_id; | |
1513 | m_selected_frame_level = -1; | |
1514 | } | |
d729566a | 1515 | |
f6223dbb | 1516 | tp->incref (); |
5ed8105e | 1517 | m_thread = tp; |
d729566a | 1518 | } |
4f8d22e3 | 1519 | |
5ed8105e | 1520 | m_inf->incref (); |
6ecce94d AC |
1521 | } |
1522 | ||
43792cf0 PA |
1523 | /* See gdbthread.h. */ |
1524 | ||
f303dbd6 PA |
1525 | int |
1526 | show_thread_that_caused_stop (void) | |
1527 | { | |
1528 | return highest_thread_num > 1; | |
1529 | } | |
1530 | ||
1531 | /* See gdbthread.h. */ | |
1532 | ||
5d5658a1 PA |
1533 | int |
1534 | show_inferior_qualified_tids (void) | |
1535 | { | |
1536 | return (inferior_list->next != NULL || inferior_list->num != 1); | |
1537 | } | |
1538 | ||
1539 | /* See gdbthread.h. */ | |
1540 | ||
43792cf0 PA |
1541 | const char * |
1542 | print_thread_id (struct thread_info *thr) | |
1543 | { | |
1544 | char *s = get_print_cell (); | |
1545 | ||
5d5658a1 PA |
1546 | if (show_inferior_qualified_tids ()) |
1547 | xsnprintf (s, PRINT_CELL_SIZE, "%d.%d", thr->inf->num, thr->per_inf_num); | |
1548 | else | |
1549 | xsnprintf (s, PRINT_CELL_SIZE, "%d", thr->per_inf_num); | |
43792cf0 PA |
1550 | return s; |
1551 | } | |
1552 | ||
6665660a PA |
1553 | /* Sort an array of struct thread_info pointers by thread ID (first by |
1554 | inferior number, and then by per-inferior thread number). Sorts in | |
1555 | ascending order. */ | |
253828f1 | 1556 | |
6665660a PA |
1557 | static bool |
1558 | tp_array_compar_ascending (const thread_info *a, const thread_info *b) | |
1559 | { | |
1560 | if (a->inf->num != b->inf->num) | |
1561 | return a->inf->num < b->inf->num; | |
1562 | ||
1563 | return (a->per_inf_num < b->per_inf_num); | |
1564 | } | |
253828f1 | 1565 | |
6665660a PA |
1566 | /* Sort an array of struct thread_info pointers by thread ID (first by |
1567 | inferior number, and then by per-inferior thread number). Sorts in | |
1568 | descending order. */ | |
253828f1 | 1569 | |
c6609450 | 1570 | static bool |
6665660a | 1571 | tp_array_compar_descending (const thread_info *a, const thread_info *b) |
253828f1 | 1572 | { |
5d5658a1 | 1573 | if (a->inf->num != b->inf->num) |
6665660a | 1574 | return a->inf->num > b->inf->num; |
253828f1 | 1575 | |
6665660a | 1576 | return (a->per_inf_num > b->per_inf_num); |
253828f1 JK |
1577 | } |
1578 | ||
1fe75df7 PW |
1579 | /* Switch to thread THR and execute CMD. |
1580 | FLAGS.QUIET controls the printing of the thread information. | |
1581 | FLAGS.CONT and FLAGS.SILENT control how to handle errors. */ | |
1582 | ||
1583 | static void | |
1584 | thr_try_catch_cmd (thread_info *thr, const char *cmd, int from_tty, | |
1585 | const qcs_flags &flags) | |
1586 | { | |
1587 | switch_to_thread (thr); | |
b65ce565 JG |
1588 | |
1589 | /* The thread header is computed before running the command since | |
1590 | the command can change the inferior, which is not permitted | |
1591 | by thread_target_id_str. */ | |
1592 | std::string thr_header = | |
1593 | string_printf (_("\nThread %s (%s):\n"), print_thread_id (thr), | |
1594 | thread_target_id_str (thr).c_str ()); | |
1595 | ||
a70b8144 | 1596 | try |
1fe75df7 | 1597 | { |
8a522c6c PW |
1598 | std::string cmd_result = execute_command_to_string |
1599 | (cmd, from_tty, gdb_stdout->term_out ()); | |
1fe75df7 PW |
1600 | if (!flags.silent || cmd_result.length () > 0) |
1601 | { | |
1602 | if (!flags.quiet) | |
b65ce565 | 1603 | printf_filtered ("%s", thr_header.c_str ()); |
1fe75df7 PW |
1604 | printf_filtered ("%s", cmd_result.c_str ()); |
1605 | } | |
1606 | } | |
230d2906 | 1607 | catch (const gdb_exception_error &ex) |
1fe75df7 PW |
1608 | { |
1609 | if (!flags.silent) | |
1610 | { | |
1611 | if (!flags.quiet) | |
b65ce565 | 1612 | printf_filtered ("%s", thr_header.c_str ()); |
1fe75df7 | 1613 | if (flags.cont) |
3d6e9d23 | 1614 | printf_filtered ("%s\n", ex.what ()); |
1fe75df7 | 1615 | else |
eedc3f4f | 1616 | throw; |
1fe75df7 PW |
1617 | } |
1618 | } | |
1fe75df7 PW |
1619 | } |
1620 | ||
6665660a PA |
1621 | /* Option definition of "thread apply"'s "-ascending" option. */ |
1622 | ||
1623 | static const gdb::option::flag_option_def<> ascending_option_def = { | |
1624 | "ascending", | |
1625 | N_("\ | |
1626 | Call COMMAND for all threads in ascending order.\n\ | |
1627 | The default is descending order."), | |
1628 | }; | |
1629 | ||
1630 | /* The qcs command line flags for the "thread apply" commands. Keep | |
1631 | this in sync with the "frame apply" commands. */ | |
1632 | ||
1633 | using qcs_flag_option_def | |
1634 | = gdb::option::flag_option_def<qcs_flags>; | |
1635 | ||
1636 | static const gdb::option::option_def thr_qcs_flags_option_defs[] = { | |
1637 | qcs_flag_option_def { | |
1638 | "q", [] (qcs_flags *opt) { return &opt->quiet; }, | |
1639 | N_("Disables printing the thread information."), | |
1640 | }, | |
1641 | ||
1642 | qcs_flag_option_def { | |
1643 | "c", [] (qcs_flags *opt) { return &opt->cont; }, | |
1644 | N_("Print any error raised by COMMAND and continue."), | |
1645 | }, | |
1646 | ||
1647 | qcs_flag_option_def { | |
1648 | "s", [] (qcs_flags *opt) { return &opt->silent; }, | |
1649 | N_("Silently ignore any errors or empty output produced by COMMAND."), | |
1650 | }, | |
1651 | }; | |
1652 | ||
1653 | /* Create an option_def_group for the "thread apply all" options, with | |
1654 | ASCENDING and FLAGS as context. */ | |
1655 | ||
1656 | static inline std::array<gdb::option::option_def_group, 2> | |
491144b5 | 1657 | make_thread_apply_all_options_def_group (bool *ascending, |
6665660a PA |
1658 | qcs_flags *flags) |
1659 | { | |
1660 | return {{ | |
66eb1ed3 PA |
1661 | { {ascending_option_def.def ()}, ascending}, |
1662 | { {thr_qcs_flags_option_defs}, flags }, | |
6665660a PA |
1663 | }}; |
1664 | } | |
1665 | ||
1666 | /* Create an option_def_group for the "thread apply" options, with | |
1667 | FLAGS as context. */ | |
1668 | ||
1669 | static inline gdb::option::option_def_group | |
1670 | make_thread_apply_options_def_group (qcs_flags *flags) | |
1671 | { | |
66eb1ed3 | 1672 | return {{thr_qcs_flags_option_defs}, flags}; |
6665660a PA |
1673 | } |
1674 | ||
c906108c | 1675 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
224608c3 PW |
1676 | separated list of numbers, or ranges, or the keyword `all'. Ranges consist |
1677 | of two numbers separated by a hyphen. Examples: | |
c906108c | 1678 | |
c5aa993b JM |
1679 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
1680 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
224608c3 | 1681 | thread apply all x/i $pc Apply x/i $pc cmd to all threads. */ |
c906108c SS |
1682 | |
1683 | static void | |
5fed81ff | 1684 | thread_apply_all_command (const char *cmd, int from_tty) |
c906108c | 1685 | { |
491144b5 | 1686 | bool ascending = false; |
1fe75df7 PW |
1687 | qcs_flags flags; |
1688 | ||
6665660a PA |
1689 | auto group = make_thread_apply_all_options_def_group (&ascending, |
1690 | &flags); | |
1691 | gdb::option::process_options | |
1692 | (&cmd, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group); | |
1fe75df7 | 1693 | |
6665660a | 1694 | validate_flags_qcs ("thread apply all", &flags); |
253828f1 | 1695 | |
c906108c | 1696 | if (cmd == NULL || *cmd == '\000') |
1fe75df7 | 1697 | error (_("Please specify a command at the end of 'thread apply all'")); |
94cc34af | 1698 | |
dc146f7c | 1699 | update_thread_list (); |
e9d196c5 | 1700 | |
c6609450 | 1701 | int tc = live_threads_count (); |
a25d8bf9 | 1702 | if (tc != 0) |
054e8d9e | 1703 | { |
c6609450 PA |
1704 | /* Save a copy of the thread list and increment each thread's |
1705 | refcount while executing the command in the context of each | |
1706 | thread, in case the command is one that wipes threads. E.g., | |
1707 | detach, kill, disconnect, etc., or even normally continuing | |
1708 | over an inferior or thread exit. */ | |
1709 | std::vector<thread_info *> thr_list_cpy; | |
1710 | thr_list_cpy.reserve (tc); | |
054e8d9e | 1711 | |
08036331 PA |
1712 | for (thread_info *tp : all_non_exited_threads ()) |
1713 | thr_list_cpy.push_back (tp); | |
1714 | gdb_assert (thr_list_cpy.size () == tc); | |
054e8d9e | 1715 | |
c6609450 PA |
1716 | /* Increment the refcounts, and restore them back on scope |
1717 | exit. */ | |
1718 | scoped_inc_dec_ref inc_dec_ref (thr_list_cpy); | |
253828f1 | 1719 | |
6665660a PA |
1720 | auto *sorter = (ascending |
1721 | ? tp_array_compar_ascending | |
1722 | : tp_array_compar_descending); | |
1723 | std::sort (thr_list_cpy.begin (), thr_list_cpy.end (), sorter); | |
054e8d9e | 1724 | |
5ed8105e PA |
1725 | scoped_restore_current_thread restore_thread; |
1726 | ||
c6609450 | 1727 | for (thread_info *thr : thr_list_cpy) |
f3f8ece4 | 1728 | if (switch_to_thread_if_alive (thr)) |
1fe75df7 | 1729 | thr_try_catch_cmd (thr, cmd, from_tty, flags); |
054e8d9e | 1730 | } |
c906108c SS |
1731 | } |
1732 | ||
6665660a PA |
1733 | /* Completer for "thread apply [ID list]". */ |
1734 | ||
1735 | static void | |
1736 | thread_apply_command_completer (cmd_list_element *ignore, | |
1737 | completion_tracker &tracker, | |
1738 | const char *text, const char * /*word*/) | |
1739 | { | |
1740 | /* Don't leave this to complete_options because there's an early | |
1741 | return below. */ | |
1742 | tracker.set_use_custom_word_point (true); | |
1743 | ||
1744 | tid_range_parser parser; | |
1745 | parser.init (text, current_inferior ()->num); | |
1746 | ||
1747 | try | |
1748 | { | |
1749 | while (!parser.finished ()) | |
1750 | { | |
1751 | int inf_num, thr_start, thr_end; | |
1752 | ||
1753 | if (!parser.get_tid_range (&inf_num, &thr_start, &thr_end)) | |
1754 | break; | |
1755 | ||
1756 | if (parser.in_star_range () || parser.in_thread_range ()) | |
1757 | parser.skip_range (); | |
1758 | } | |
1759 | } | |
1760 | catch (const gdb_exception_error &ex) | |
1761 | { | |
1762 | /* get_tid_range throws if it parses a negative number, for | |
1763 | example. But a seemingly negative number may be the start of | |
1764 | an option instead. */ | |
1765 | } | |
1766 | ||
1767 | const char *cmd = parser.cur_tok (); | |
1768 | ||
1769 | if (cmd == text) | |
1770 | { | |
1771 | /* No thread ID list yet. */ | |
1772 | return; | |
1773 | } | |
1774 | ||
1775 | /* Check if we're past a valid thread ID list already. */ | |
1776 | if (parser.finished () | |
1777 | && cmd > text && !isspace (cmd[-1])) | |
1778 | return; | |
1779 | ||
1780 | /* We're past the thread ID list, advance word point. */ | |
1781 | tracker.advance_custom_word_point_by (cmd - text); | |
1782 | text = cmd; | |
1783 | ||
1784 | const auto group = make_thread_apply_options_def_group (nullptr); | |
1785 | if (gdb::option::complete_options | |
1786 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
1787 | return; | |
1788 | ||
1789 | complete_nested_command_line (tracker, text); | |
1790 | } | |
1791 | ||
1792 | /* Completer for "thread apply all". */ | |
1793 | ||
1794 | static void | |
1795 | thread_apply_all_command_completer (cmd_list_element *ignore, | |
1796 | completion_tracker &tracker, | |
1797 | const char *text, const char *word) | |
1798 | { | |
1799 | const auto group = make_thread_apply_all_options_def_group (nullptr, | |
1800 | nullptr); | |
1801 | if (gdb::option::complete_options | |
1802 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
1803 | return; | |
1804 | ||
1805 | complete_nested_command_line (tracker, text); | |
1806 | } | |
1807 | ||
43792cf0 PA |
1808 | /* Implementation of the "thread apply" command. */ |
1809 | ||
c906108c | 1810 | static void |
981a3fb3 | 1811 | thread_apply_command (const char *tidlist, int from_tty) |
c906108c | 1812 | { |
1fe75df7 | 1813 | qcs_flags flags; |
95a6b0a1 | 1814 | const char *cmd = NULL; |
bfd28288 | 1815 | tid_range_parser parser; |
c906108c SS |
1816 | |
1817 | if (tidlist == NULL || *tidlist == '\000') | |
8a3fe4f8 | 1818 | error (_("Please specify a thread ID list")); |
c906108c | 1819 | |
bfd28288 PA |
1820 | parser.init (tidlist, current_inferior ()->num); |
1821 | while (!parser.finished ()) | |
3f5b7598 PA |
1822 | { |
1823 | int inf_num, thr_start, thr_end; | |
c906108c | 1824 | |
bfd28288 | 1825 | if (!parser.get_tid_range (&inf_num, &thr_start, &thr_end)) |
b9a3f842 | 1826 | break; |
3f5b7598 PA |
1827 | } |
1828 | ||
b9a3f842 PA |
1829 | cmd = parser.cur_tok (); |
1830 | ||
6665660a PA |
1831 | auto group = make_thread_apply_options_def_group (&flags); |
1832 | gdb::option::process_options | |
1833 | (&cmd, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group); | |
1834 | ||
1835 | validate_flags_qcs ("thread apply", &flags); | |
1fe75df7 | 1836 | |
b9a3f842 | 1837 | if (*cmd == '\0') |
8a3fe4f8 | 1838 | error (_("Please specify a command following the thread ID list")); |
c906108c | 1839 | |
f7e13587 | 1840 | if (tidlist == cmd || isdigit (cmd[0])) |
3f5b7598 PA |
1841 | invalid_thread_id_error (cmd); |
1842 | ||
5ed8105e | 1843 | scoped_restore_current_thread restore_thread; |
c906108c | 1844 | |
bfd28288 | 1845 | parser.init (tidlist, current_inferior ()->num); |
b9a3f842 | 1846 | while (!parser.finished ()) |
5d5658a1 PA |
1847 | { |
1848 | struct thread_info *tp = NULL; | |
1849 | struct inferior *inf; | |
1850 | int inf_num, thr_num; | |
65fc9b77 | 1851 | |
bfd28288 | 1852 | parser.get_tid (&inf_num, &thr_num); |
5d5658a1 PA |
1853 | inf = find_inferior_id (inf_num); |
1854 | if (inf != NULL) | |
1855 | tp = find_thread_id (inf, thr_num); | |
71ef29a8 | 1856 | |
bfd28288 | 1857 | if (parser.in_star_range ()) |
71ef29a8 PA |
1858 | { |
1859 | if (inf == NULL) | |
1860 | { | |
1861 | warning (_("Unknown inferior %d"), inf_num); | |
bfd28288 | 1862 | parser.skip_range (); |
71ef29a8 PA |
1863 | continue; |
1864 | } | |
1865 | ||
1866 | /* No use looking for threads past the highest thread number | |
1867 | the inferior ever had. */ | |
1868 | if (thr_num >= inf->highest_thread_num) | |
bfd28288 | 1869 | parser.skip_range (); |
71ef29a8 PA |
1870 | |
1871 | /* Be quiet about unknown threads numbers. */ | |
1872 | if (tp == NULL) | |
1873 | continue; | |
1874 | } | |
1875 | ||
5d5658a1 PA |
1876 | if (tp == NULL) |
1877 | { | |
bfd28288 | 1878 | if (show_inferior_qualified_tids () || parser.tid_is_qualified ()) |
5d5658a1 PA |
1879 | warning (_("Unknown thread %d.%d"), inf_num, thr_num); |
1880 | else | |
1881 | warning (_("Unknown thread %d"), thr_num); | |
1882 | continue; | |
1883 | } | |
c906108c | 1884 | |
f3f8ece4 | 1885 | if (!switch_to_thread_if_alive (tp)) |
65ebfb52 | 1886 | { |
5d5658a1 PA |
1887 | warning (_("Thread %s has terminated."), print_thread_id (tp)); |
1888 | continue; | |
1889 | } | |
4f8d22e3 | 1890 | |
1fe75df7 | 1891 | thr_try_catch_cmd (tp, cmd, from_tty, flags); |
c906108c SS |
1892 | } |
1893 | } | |
1894 | ||
1fe75df7 PW |
1895 | |
1896 | /* Implementation of the "taas" command. */ | |
1897 | ||
1898 | static void | |
1899 | taas_command (const char *cmd, int from_tty) | |
1900 | { | |
e0fad1ea PW |
1901 | if (cmd == NULL || *cmd == '\0') |
1902 | error (_("Please specify a command to apply on all threads")); | |
1fe75df7 PW |
1903 | std::string expanded = std::string ("thread apply all -s ") + cmd; |
1904 | execute_command (expanded.c_str (), from_tty); | |
1905 | } | |
1906 | ||
1907 | /* Implementation of the "tfaas" command. */ | |
1908 | ||
1909 | static void | |
1910 | tfaas_command (const char *cmd, int from_tty) | |
1911 | { | |
e0fad1ea PW |
1912 | if (cmd == NULL || *cmd == '\0') |
1913 | error (_("Please specify a command to apply on all frames of all threads")); | |
1fe75df7 | 1914 | std::string expanded |
5d707134 | 1915 | = std::string ("thread apply all -s -- frame apply all -s ") + cmd; |
1fe75df7 PW |
1916 | execute_command (expanded.c_str (), from_tty); |
1917 | } | |
1918 | ||
224608c3 | 1919 | /* Switch to the specified thread, or print the current thread. */ |
c906108c | 1920 | |
f0e8c4c5 | 1921 | void |
981a3fb3 | 1922 | thread_command (const char *tidstr, int from_tty) |
c906108c | 1923 | { |
4034d0ff | 1924 | if (tidstr == NULL) |
c906108c | 1925 | { |
9295a5a9 | 1926 | if (inferior_ptid == null_ptid) |
d729566a PA |
1927 | error (_("No thread selected")); |
1928 | ||
c906108c | 1929 | if (target_has_stack) |
4f8d22e3 | 1930 | { |
43792cf0 PA |
1931 | struct thread_info *tp = inferior_thread (); |
1932 | ||
00431a78 | 1933 | if (tp->state == THREAD_EXITED) |
43792cf0 PA |
1934 | printf_filtered (_("[Current thread is %s (%s) (exited)]\n"), |
1935 | print_thread_id (tp), | |
a068643d | 1936 | target_pid_to_str (inferior_ptid).c_str ()); |
4f8d22e3 | 1937 | else |
43792cf0 PA |
1938 | printf_filtered (_("[Current thread is %s (%s)]\n"), |
1939 | print_thread_id (tp), | |
a068643d | 1940 | target_pid_to_str (inferior_ptid).c_str ()); |
4f8d22e3 | 1941 | } |
c906108c | 1942 | else |
8a3fe4f8 | 1943 | error (_("No stack.")); |
c906108c | 1944 | } |
4034d0ff AT |
1945 | else |
1946 | { | |
1947 | ptid_t previous_ptid = inferior_ptid; | |
4034d0ff | 1948 | |
65630365 | 1949 | thread_select (tidstr, parse_thread_id (tidstr, NULL)); |
c5394b80 | 1950 | |
ae0eee42 PA |
1951 | /* Print if the thread has not changed, otherwise an event will |
1952 | be sent. */ | |
9295a5a9 | 1953 | if (inferior_ptid == previous_ptid) |
4034d0ff AT |
1954 | { |
1955 | print_selected_thread_frame (current_uiout, | |
1956 | USER_SELECTED_THREAD | |
1957 | | USER_SELECTED_FRAME); | |
1958 | } | |
1959 | else | |
1960 | { | |
76727919 TT |
1961 | gdb::observers::user_selected_context_changed.notify |
1962 | (USER_SELECTED_THREAD | USER_SELECTED_FRAME); | |
4034d0ff AT |
1963 | } |
1964 | } | |
c5394b80 JM |
1965 | } |
1966 | ||
4694da01 TT |
1967 | /* Implementation of `thread name'. */ |
1968 | ||
1969 | static void | |
fc41a75b | 1970 | thread_name_command (const char *arg, int from_tty) |
4694da01 TT |
1971 | { |
1972 | struct thread_info *info; | |
1973 | ||
9295a5a9 | 1974 | if (inferior_ptid == null_ptid) |
4694da01 TT |
1975 | error (_("No thread selected")); |
1976 | ||
529480d0 | 1977 | arg = skip_spaces (arg); |
4694da01 TT |
1978 | |
1979 | info = inferior_thread (); | |
1980 | xfree (info->name); | |
1981 | info->name = arg ? xstrdup (arg) : NULL; | |
1982 | } | |
1983 | ||
60f98dde MS |
1984 | /* Find thread ids with a name, target pid, or extra info matching ARG. */ |
1985 | ||
1986 | static void | |
fc41a75b | 1987 | thread_find_command (const char *arg, int from_tty) |
60f98dde | 1988 | { |
73ede765 | 1989 | const char *tmp; |
60f98dde MS |
1990 | unsigned long match = 0; |
1991 | ||
1992 | if (arg == NULL || *arg == '\0') | |
1993 | error (_("Command requires an argument.")); | |
1994 | ||
1995 | tmp = re_comp (arg); | |
1996 | if (tmp != 0) | |
1997 | error (_("Invalid regexp (%s): %s"), tmp, arg); | |
1998 | ||
1999 | update_thread_list (); | |
08036331 | 2000 | for (thread_info *tp : all_threads ()) |
60f98dde MS |
2001 | { |
2002 | if (tp->name != NULL && re_exec (tp->name)) | |
2003 | { | |
43792cf0 PA |
2004 | printf_filtered (_("Thread %s has name '%s'\n"), |
2005 | print_thread_id (tp), tp->name); | |
60f98dde MS |
2006 | match++; |
2007 | } | |
2008 | ||
2009 | tmp = target_thread_name (tp); | |
2010 | if (tmp != NULL && re_exec (tmp)) | |
2011 | { | |
43792cf0 PA |
2012 | printf_filtered (_("Thread %s has target name '%s'\n"), |
2013 | print_thread_id (tp), tmp); | |
60f98dde MS |
2014 | match++; |
2015 | } | |
2016 | ||
a068643d TT |
2017 | std::string name = target_pid_to_str (tp->ptid); |
2018 | if (!name.empty () && re_exec (name.c_str ())) | |
60f98dde | 2019 | { |
43792cf0 | 2020 | printf_filtered (_("Thread %s has target id '%s'\n"), |
a068643d | 2021 | print_thread_id (tp), name.c_str ()); |
60f98dde MS |
2022 | match++; |
2023 | } | |
2024 | ||
2025 | tmp = target_extra_thread_info (tp); | |
2026 | if (tmp != NULL && re_exec (tmp)) | |
2027 | { | |
43792cf0 PA |
2028 | printf_filtered (_("Thread %s has extra info '%s'\n"), |
2029 | print_thread_id (tp), tmp); | |
60f98dde MS |
2030 | match++; |
2031 | } | |
2032 | } | |
2033 | if (!match) | |
2034 | printf_filtered (_("No threads match '%s'\n"), arg); | |
2035 | } | |
2036 | ||
93815fbf | 2037 | /* Print notices when new threads are attached and detached. */ |
491144b5 | 2038 | bool print_thread_events = true; |
93815fbf VP |
2039 | static void |
2040 | show_print_thread_events (struct ui_file *file, int from_tty, | |
ae0eee42 | 2041 | struct cmd_list_element *c, const char *value) |
93815fbf | 2042 | { |
3e43a32a MS |
2043 | fprintf_filtered (file, |
2044 | _("Printing of thread events is %s.\n"), | |
ae0eee42 | 2045 | value); |
93815fbf VP |
2046 | } |
2047 | ||
65630365 | 2048 | /* See gdbthread.h. */ |
c906108c | 2049 | |
65630365 PA |
2050 | void |
2051 | thread_select (const char *tidstr, thread_info *tp) | |
2052 | { | |
f3f8ece4 | 2053 | if (!switch_to_thread_if_alive (tp)) |
5d5658a1 | 2054 | error (_("Thread ID %s has terminated."), tidstr); |
c906108c | 2055 | |
db5a7484 NR |
2056 | annotate_thread_changed (); |
2057 | ||
4034d0ff AT |
2058 | /* Since the current thread may have changed, see if there is any |
2059 | exited thread we can now delete. */ | |
a05575d3 | 2060 | delete_exited_threads (); |
4034d0ff AT |
2061 | } |
2062 | ||
2063 | /* Print thread and frame switch command response. */ | |
2064 | ||
2065 | void | |
2066 | print_selected_thread_frame (struct ui_out *uiout, | |
2067 | user_selected_what selection) | |
2068 | { | |
2069 | struct thread_info *tp = inferior_thread (); | |
4034d0ff AT |
2070 | |
2071 | if (selection & USER_SELECTED_THREAD) | |
5d5658a1 | 2072 | { |
112e8700 | 2073 | if (uiout->is_mi_like_p ()) |
4034d0ff | 2074 | { |
381befee TT |
2075 | uiout->field_signed ("new-thread-id", |
2076 | inferior_thread ()->global_num); | |
4034d0ff AT |
2077 | } |
2078 | else | |
2079 | { | |
112e8700 SM |
2080 | uiout->text ("[Switching to thread "); |
2081 | uiout->field_string ("new-thread-id", print_thread_id (tp)); | |
2082 | uiout->text (" ("); | |
a068643d | 2083 | uiout->text (target_pid_to_str (inferior_ptid).c_str ()); |
112e8700 | 2084 | uiout->text (")]"); |
4034d0ff | 2085 | } |
5d5658a1 | 2086 | } |
c5394b80 | 2087 | |
30596231 | 2088 | if (tp->state == THREAD_RUNNING) |
98871305 | 2089 | { |
4034d0ff | 2090 | if (selection & USER_SELECTED_THREAD) |
112e8700 | 2091 | uiout->text ("(running)\n"); |
98871305 | 2092 | } |
4034d0ff AT |
2093 | else if (selection & USER_SELECTED_FRAME) |
2094 | { | |
2095 | if (selection & USER_SELECTED_THREAD) | |
112e8700 | 2096 | uiout->text ("\n"); |
4f8d22e3 | 2097 | |
4034d0ff AT |
2098 | if (has_stack_frames ()) |
2099 | print_stack_frame_to_uiout (uiout, get_selected_frame (NULL), | |
2100 | 1, SRC_AND_LOC, 1); | |
2101 | } | |
c5394b80 JM |
2102 | } |
2103 | ||
b57bacec | 2104 | /* Update the 'threads_executing' global based on the threads we know |
5b6d1e4f PA |
2105 | about right now. This is used by infrun to tell whether we should |
2106 | pull events out of the current target. */ | |
b57bacec PA |
2107 | |
2108 | static void | |
2109 | update_threads_executing (void) | |
2110 | { | |
5b6d1e4f PA |
2111 | process_stratum_target *targ = current_inferior ()->process_target (); |
2112 | ||
2113 | if (targ == NULL) | |
2114 | return; | |
2115 | ||
2116 | targ->threads_executing = false; | |
2117 | ||
2118 | for (inferior *inf : all_non_exited_inferiors (targ)) | |
b57bacec | 2119 | { |
5b6d1e4f PA |
2120 | if (!inf->has_execution ()) |
2121 | continue; | |
2122 | ||
2123 | /* If the process has no threads, then it must be we have a | |
2124 | process-exit event pending. */ | |
2125 | if (inf->thread_list == NULL) | |
2126 | { | |
2127 | targ->threads_executing = true; | |
2128 | return; | |
2129 | } | |
2130 | ||
2131 | for (thread_info *tp : inf->non_exited_threads ()) | |
b57bacec | 2132 | { |
5b6d1e4f PA |
2133 | if (tp->executing) |
2134 | { | |
2135 | targ->threads_executing = true; | |
2136 | return; | |
2137 | } | |
b57bacec PA |
2138 | } |
2139 | } | |
2140 | } | |
2141 | ||
dc146f7c VP |
2142 | void |
2143 | update_thread_list (void) | |
2144 | { | |
e8032dde | 2145 | target_update_thread_list (); |
b57bacec | 2146 | update_threads_executing (); |
dc146f7c VP |
2147 | } |
2148 | ||
663f6d42 PA |
2149 | /* Return a new value for the selected thread's id. Return a value of |
2150 | 0 if no thread is selected. If GLOBAL is true, return the thread's | |
2151 | global number. Otherwise return the per-inferior number. */ | |
2152 | ||
2153 | static struct value * | |
2154 | thread_num_make_value_helper (struct gdbarch *gdbarch, int global) | |
2155 | { | |
663f6d42 PA |
2156 | int int_val; |
2157 | ||
00431a78 | 2158 | if (inferior_ptid == null_ptid) |
663f6d42 | 2159 | int_val = 0; |
663f6d42 | 2160 | else |
00431a78 PA |
2161 | { |
2162 | thread_info *tp = inferior_thread (); | |
2163 | if (global) | |
2164 | int_val = tp->global_num; | |
2165 | else | |
2166 | int_val = tp->per_inf_num; | |
2167 | } | |
663f6d42 PA |
2168 | |
2169 | return value_from_longest (builtin_type (gdbarch)->builtin_int, int_val); | |
2170 | } | |
2171 | ||
5d5658a1 PA |
2172 | /* Return a new value for the selected thread's per-inferior thread |
2173 | number. Return a value of 0 if no thread is selected, or no | |
2174 | threads exist. */ | |
6aed2dbc SS |
2175 | |
2176 | static struct value * | |
ae0eee42 PA |
2177 | thread_id_per_inf_num_make_value (struct gdbarch *gdbarch, |
2178 | struct internalvar *var, | |
663f6d42 | 2179 | void *ignore) |
6aed2dbc | 2180 | { |
663f6d42 PA |
2181 | return thread_num_make_value_helper (gdbarch, 0); |
2182 | } | |
2183 | ||
2184 | /* Return a new value for the selected thread's global id. Return a | |
2185 | value of 0 if no thread is selected, or no threads exist. */ | |
6aed2dbc | 2186 | |
663f6d42 PA |
2187 | static struct value * |
2188 | global_thread_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, | |
2189 | void *ignore) | |
2190 | { | |
2191 | return thread_num_make_value_helper (gdbarch, 1); | |
6aed2dbc SS |
2192 | } |
2193 | ||
c906108c SS |
2194 | /* Commands with a prefix of `thread'. */ |
2195 | struct cmd_list_element *thread_cmd_list = NULL; | |
2196 | ||
22d2b532 SDJ |
2197 | /* Implementation of `thread' variable. */ |
2198 | ||
2199 | static const struct internalvar_funcs thread_funcs = | |
2200 | { | |
663f6d42 PA |
2201 | thread_id_per_inf_num_make_value, |
2202 | NULL, | |
2203 | NULL | |
2204 | }; | |
2205 | ||
2206 | /* Implementation of `gthread' variable. */ | |
2207 | ||
2208 | static const struct internalvar_funcs gthread_funcs = | |
2209 | { | |
2210 | global_thread_id_make_value, | |
22d2b532 SDJ |
2211 | NULL, |
2212 | NULL | |
2213 | }; | |
2214 | ||
6c265988 | 2215 | void _initialize_thread (); |
c906108c | 2216 | void |
6c265988 | 2217 | _initialize_thread () |
c906108c SS |
2218 | { |
2219 | static struct cmd_list_element *thread_apply_list = NULL; | |
5d707134 | 2220 | cmd_list_element *c; |
c906108c | 2221 | |
54d66006 PA |
2222 | const auto info_threads_opts = make_info_threads_options_def_group (nullptr); |
2223 | ||
2224 | /* Note: keep this "ID" in sync with what "info threads [TAB]" | |
2225 | suggests. */ | |
2226 | static std::string info_threads_help | |
2227 | = gdb::option::build_help (_("\ | |
2228 | Display currently known threads.\n\ | |
2229 | Usage: info threads [OPTION]... [ID]...\n\ | |
2230 | \n\ | |
2231 | Options:\n\ | |
2232 | %OPTIONS%\ | |
5d5658a1 | 2233 | If ID is given, it is a space-separated list of IDs of threads to display.\n\ |
54d66006 PA |
2234 | Otherwise, all threads are displayed."), |
2235 | info_threads_opts); | |
2236 | ||
2237 | c = add_info ("threads", info_threads_command, info_threads_help.c_str ()); | |
2238 | set_cmd_completer_handle_brkchars (c, info_threads_command_completer); | |
c906108c | 2239 | |
d729566a | 2240 | add_prefix_cmd ("thread", class_run, thread_command, _("\ |
1bedd215 AC |
2241 | Use this command to switch between threads.\n\ |
2242 | The new thread ID must be currently known."), | |
d729566a | 2243 | &thread_cmd_list, "thread ", 1, &cmdlist); |
c906108c | 2244 | |
6665660a | 2245 | #define THREAD_APPLY_OPTION_HELP "\ |
1fe75df7 PW |
2246 | Prints per-inferior thread number and target system's thread id\n\ |
2247 | followed by COMMAND output.\n\ | |
6665660a PA |
2248 | \n\ |
2249 | By default, an error raised during the execution of COMMAND\n\ | |
2250 | aborts \"thread apply\".\n\ | |
2251 | \n\ | |
2252 | Options:\n\ | |
2253 | %OPTIONS%" | |
2254 | ||
2255 | const auto thread_apply_opts = make_thread_apply_options_def_group (nullptr); | |
2256 | ||
8abfcabc | 2257 | static std::string thread_apply_help = gdb::option::build_help (_("\ |
6665660a PA |
2258 | Apply a command to a list of threads.\n\ |
2259 | Usage: thread apply ID... [OPTION]... COMMAND\n\ | |
1fe75df7 | 2260 | ID is a space-separated list of IDs of threads to apply COMMAND on.\n" |
6665660a PA |
2261 | THREAD_APPLY_OPTION_HELP), |
2262 | thread_apply_opts); | |
2263 | ||
2264 | c = add_prefix_cmd ("apply", class_run, thread_apply_command, | |
2265 | thread_apply_help.c_str (), | |
2266 | &thread_apply_list, "thread apply ", 1, | |
2267 | &thread_cmd_list); | |
2268 | set_cmd_completer_handle_brkchars (c, thread_apply_command_completer); | |
c906108c | 2269 | |
6665660a PA |
2270 | const auto thread_apply_all_opts |
2271 | = make_thread_apply_all_options_def_group (nullptr, nullptr); | |
2272 | ||
8abfcabc | 2273 | static std::string thread_apply_all_help = gdb::option::build_help (_("\ |
253828f1 JK |
2274 | Apply a command to all threads.\n\ |
2275 | \n\ | |
6665660a PA |
2276 | Usage: thread apply all [OPTION]... COMMAND\n" |
2277 | THREAD_APPLY_OPTION_HELP), | |
2278 | thread_apply_all_opts); | |
2279 | ||
2280 | c = add_cmd ("all", class_run, thread_apply_all_command, | |
2281 | thread_apply_all_help.c_str (), | |
2282 | &thread_apply_list); | |
2283 | set_cmd_completer_handle_brkchars (c, thread_apply_all_command_completer); | |
c906108c | 2284 | |
6665660a | 2285 | c = add_com ("taas", class_run, taas_command, _("\ |
1fe75df7 | 2286 | Apply a command to all threads (ignoring errors and empty output).\n\ |
6665660a PA |
2287 | Usage: taas [OPTION]... COMMAND\n\ |
2288 | shortcut for 'thread apply all -s [OPTION]... COMMAND'\n\ | |
2289 | See \"help thread apply all\" for available options.")); | |
2290 | set_cmd_completer_handle_brkchars (c, thread_apply_all_command_completer); | |
1fe75df7 | 2291 | |
5d707134 | 2292 | c = add_com ("tfaas", class_run, tfaas_command, _("\ |
1fe75df7 | 2293 | Apply a command to all frames of all threads (ignoring errors and empty output).\n\ |
5d707134 PA |
2294 | Usage: tfaas [OPTION]... COMMAND\n\ |
2295 | shortcut for 'thread apply all -s -- frame apply all -s [OPTION]... COMMAND'\n\ | |
2296 | See \"help frame apply all\" for available options.")); | |
2297 | set_cmd_completer_handle_brkchars (c, frame_apply_all_cmd_completer); | |
1fe75df7 | 2298 | |
4694da01 TT |
2299 | add_cmd ("name", class_run, thread_name_command, |
2300 | _("Set the current thread's name.\n\ | |
2301 | Usage: thread name [NAME]\n\ | |
2302 | If NAME is not given, then any existing name is removed."), &thread_cmd_list); | |
2303 | ||
60f98dde MS |
2304 | add_cmd ("find", class_run, thread_find_command, _("\ |
2305 | Find threads that match a regular expression.\n\ | |
2306 | Usage: thread find REGEXP\n\ | |
2307 | Will display thread ids whose name, target ID, or extra info matches REGEXP."), | |
2308 | &thread_cmd_list); | |
2309 | ||
4f45d445 | 2310 | add_com_alias ("t", "thread", class_run, 1); |
93815fbf VP |
2311 | |
2312 | add_setshow_boolean_cmd ("thread-events", no_class, | |
ae0eee42 | 2313 | &print_thread_events, _("\ |
11c68c47 EZ |
2314 | Set printing of thread events (such as thread start and exit)."), _("\ |
2315 | Show printing of thread events (such as thread start and exit)."), NULL, | |
ae0eee42 PA |
2316 | NULL, |
2317 | show_print_thread_events, | |
2318 | &setprintlist, &showprintlist); | |
6aed2dbc | 2319 | |
22d2b532 | 2320 | create_internalvar_type_lazy ("_thread", &thread_funcs, NULL); |
663f6d42 | 2321 | create_internalvar_type_lazy ("_gthread", >hread_funcs, NULL); |
c906108c | 2322 | } |