Commit | Line | Data |
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c906108c | 1 | /* Multi-process/thread control for GDB, the GNU debugger. |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1986-2015 Free Software Foundation, Inc. |
8926118c | 4 | |
b6ba6518 | 5 | Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
24 | #include "frame.h" | |
25 | #include "inferior.h" | |
26 | #include "environ.h" | |
27 | #include "value.h" | |
28 | #include "target.h" | |
29 | #include "gdbthread.h" | |
30 | #include "command.h" | |
31 | #include "gdbcmd.h" | |
4e052eda | 32 | #include "regcache.h" |
5b7f31a4 | 33 | #include "gdb.h" |
02d27625 | 34 | #include "btrace.h" |
c906108c SS |
35 | |
36 | #include <ctype.h> | |
37 | #include <sys/types.h> | |
38 | #include <signal.h> | |
8b93c638 | 39 | #include "ui-out.h" |
683f2885 | 40 | #include "observer.h" |
d4fc5b1e | 41 | #include "annotate.h" |
94cc34af | 42 | #include "cli/cli-decode.h" |
60f98dde | 43 | #include "gdb_regex.h" |
aea5b279 | 44 | #include "cli/cli-utils.h" |
be34f849 | 45 | #include "continuations.h" |
243a9253 | 46 | #include "thread-fsm.h" |
94cc34af | 47 | |
c378eb4e | 48 | /* Definition of struct thread_info exported to gdbthread.h. */ |
c906108c | 49 | |
c378eb4e | 50 | /* Prototypes for exported functions. */ |
c906108c | 51 | |
a14ed312 | 52 | void _initialize_thread (void); |
c906108c | 53 | |
c378eb4e | 54 | /* Prototypes for local functions. */ |
c906108c | 55 | |
e5ef252a | 56 | struct thread_info *thread_list = NULL; |
c906108c SS |
57 | static int highest_thread_num; |
58 | ||
b57bacec PA |
59 | /* True if any thread is, or may be executing. We need to track this |
60 | separately because until we fully sync the thread list, we won't | |
61 | know whether the target is fully stopped, even if we see stop | |
62 | events for all known threads, because any of those threads may have | |
63 | spawned new threads we haven't heard of yet. */ | |
64 | static int threads_executing; | |
65 | ||
a14ed312 KB |
66 | static void thread_apply_all_command (char *, int); |
67 | static int thread_alive (struct thread_info *); | |
68 | static void info_threads_command (char *, int); | |
69 | static void thread_apply_command (char *, int); | |
39f77062 | 70 | static void restore_current_thread (ptid_t); |
c906108c | 71 | |
054e8d9e AA |
72 | /* Data to cleanup thread array. */ |
73 | ||
74 | struct thread_array_cleanup | |
75 | { | |
76 | /* Array of thread pointers used to set | |
77 | reference count. */ | |
78 | struct thread_info **tp_array; | |
79 | ||
80 | /* Thread count in the array. */ | |
81 | int count; | |
82 | }; | |
83 | ||
84 | ||
a5321aa4 | 85 | struct thread_info* |
4e1c45ea | 86 | inferior_thread (void) |
8601f500 | 87 | { |
e09875d4 | 88 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
4e1c45ea PA |
89 | gdb_assert (tp); |
90 | return tp; | |
91 | } | |
8601f500 | 92 | |
5b834a0a PA |
93 | /* Delete the breakpoint pointed at by BP_P, if there's one. */ |
94 | ||
95 | static void | |
96 | delete_thread_breakpoint (struct breakpoint **bp_p) | |
4e1c45ea | 97 | { |
5b834a0a | 98 | if (*bp_p != NULL) |
8601f500 | 99 | { |
5b834a0a PA |
100 | delete_breakpoint (*bp_p); |
101 | *bp_p = NULL; | |
8601f500 MS |
102 | } |
103 | } | |
104 | ||
5b834a0a PA |
105 | void |
106 | delete_step_resume_breakpoint (struct thread_info *tp) | |
107 | { | |
108 | if (tp != NULL) | |
109 | delete_thread_breakpoint (&tp->control.step_resume_breakpoint); | |
110 | } | |
111 | ||
186c406b TT |
112 | void |
113 | delete_exception_resume_breakpoint (struct thread_info *tp) | |
114 | { | |
5b834a0a PA |
115 | if (tp != NULL) |
116 | delete_thread_breakpoint (&tp->control.exception_resume_breakpoint); | |
117 | } | |
118 | ||
34b7e8a6 PA |
119 | /* See gdbthread.h. */ |
120 | ||
121 | void | |
122 | delete_single_step_breakpoints (struct thread_info *tp) | |
123 | { | |
124 | if (tp != NULL) | |
125 | delete_thread_breakpoint (&tp->control.single_step_breakpoints); | |
126 | } | |
127 | ||
5b834a0a PA |
128 | /* Delete the breakpoint pointed at by BP_P at the next stop, if |
129 | there's one. */ | |
130 | ||
131 | static void | |
132 | delete_at_next_stop (struct breakpoint **bp) | |
133 | { | |
134 | if (*bp != NULL) | |
186c406b | 135 | { |
5b834a0a PA |
136 | (*bp)->disposition = disp_del_at_next_stop; |
137 | *bp = NULL; | |
186c406b TT |
138 | } |
139 | } | |
140 | ||
34b7e8a6 PA |
141 | /* See gdbthread.h. */ |
142 | ||
143 | int | |
144 | thread_has_single_step_breakpoints_set (struct thread_info *tp) | |
145 | { | |
146 | return tp->control.single_step_breakpoints != NULL; | |
147 | } | |
148 | ||
149 | /* See gdbthread.h. */ | |
150 | ||
151 | int | |
152 | thread_has_single_step_breakpoint_here (struct thread_info *tp, | |
153 | struct address_space *aspace, | |
154 | CORE_ADDR addr) | |
155 | { | |
156 | struct breakpoint *ss_bps = tp->control.single_step_breakpoints; | |
157 | ||
158 | return (ss_bps != NULL | |
159 | && breakpoint_has_location_inserted_here (ss_bps, aspace, addr)); | |
160 | } | |
161 | ||
243a9253 PA |
162 | /* See gdbthread.h. */ |
163 | ||
164 | void | |
165 | thread_cancel_execution_command (struct thread_info *thr) | |
166 | { | |
167 | if (thr->thread_fsm != NULL) | |
168 | { | |
169 | thread_fsm_clean_up (thr->thread_fsm); | |
170 | thread_fsm_delete (thr->thread_fsm); | |
171 | thr->thread_fsm = NULL; | |
172 | } | |
173 | } | |
174 | ||
7c952b6d | 175 | static void |
4f8d22e3 | 176 | clear_thread_inferior_resources (struct thread_info *tp) |
7c952b6d ND |
177 | { |
178 | /* NOTE: this will take care of any left-over step_resume breakpoints, | |
4d8453a5 DJ |
179 | but not any user-specified thread-specific breakpoints. We can not |
180 | delete the breakpoint straight-off, because the inferior might not | |
181 | be stopped at the moment. */ | |
5b834a0a PA |
182 | delete_at_next_stop (&tp->control.step_resume_breakpoint); |
183 | delete_at_next_stop (&tp->control.exception_resume_breakpoint); | |
34b7e8a6 | 184 | delete_at_next_stop (&tp->control.single_step_breakpoints); |
186c406b | 185 | |
f59f708a PA |
186 | delete_longjmp_breakpoint_at_next_stop (tp->num); |
187 | ||
16c381f0 | 188 | bpstat_clear (&tp->control.stop_bpstat); |
95e54da7 | 189 | |
02d27625 MM |
190 | btrace_teardown (tp); |
191 | ||
243a9253 PA |
192 | thread_cancel_execution_command (tp); |
193 | ||
fa4cd53f PA |
194 | do_all_intermediate_continuations_thread (tp, 1); |
195 | do_all_continuations_thread (tp, 1); | |
4f8d22e3 PA |
196 | } |
197 | ||
198 | static void | |
199 | free_thread (struct thread_info *tp) | |
200 | { | |
fe978cb0 | 201 | if (tp->priv) |
dc146f7c VP |
202 | { |
203 | if (tp->private_dtor) | |
fe978cb0 | 204 | tp->private_dtor (tp->priv); |
dc146f7c | 205 | else |
fe978cb0 | 206 | xfree (tp->priv); |
dc146f7c | 207 | } |
7c952b6d | 208 | |
4694da01 | 209 | xfree (tp->name); |
b8c9b27d | 210 | xfree (tp); |
7c952b6d ND |
211 | } |
212 | ||
c906108c | 213 | void |
fba45db2 | 214 | init_thread_list (void) |
c906108c SS |
215 | { |
216 | struct thread_info *tp, *tpnext; | |
217 | ||
7c952b6d | 218 | highest_thread_num = 0; |
8ea051c5 | 219 | |
c906108c SS |
220 | if (!thread_list) |
221 | return; | |
222 | ||
223 | for (tp = thread_list; tp; tp = tpnext) | |
224 | { | |
225 | tpnext = tp->next; | |
7c952b6d | 226 | free_thread (tp); |
c906108c SS |
227 | } |
228 | ||
229 | thread_list = NULL; | |
b57bacec | 230 | threads_executing = 0; |
c906108c SS |
231 | } |
232 | ||
e58b0e63 PA |
233 | /* Allocate a new thread with target id PTID and add it to the thread |
234 | list. */ | |
235 | ||
236 | static struct thread_info * | |
237 | new_thread (ptid_t ptid) | |
238 | { | |
8d749320 | 239 | struct thread_info *tp = XCNEW (struct thread_info); |
e58b0e63 PA |
240 | |
241 | tp->ptid = ptid; | |
242 | tp->num = ++highest_thread_num; | |
243 | tp->next = thread_list; | |
244 | thread_list = tp; | |
245 | ||
246 | /* Nothing to follow yet. */ | |
247 | tp->pending_follow.kind = TARGET_WAITKIND_SPURIOUS; | |
30596231 | 248 | tp->state = THREAD_STOPPED; |
372316f1 | 249 | tp->suspend.waitstatus.kind = TARGET_WAITKIND_IGNORE; |
e58b0e63 PA |
250 | |
251 | return tp; | |
252 | } | |
253 | ||
0d06e24b | 254 | struct thread_info * |
93815fbf | 255 | add_thread_silent (ptid_t ptid) |
c906108c SS |
256 | { |
257 | struct thread_info *tp; | |
258 | ||
e09875d4 | 259 | tp = find_thread_ptid (ptid); |
4f8d22e3 PA |
260 | if (tp) |
261 | /* Found an old thread with the same id. It has to be dead, | |
262 | otherwise we wouldn't be adding a new thread with the same id. | |
263 | The OS is reusing this id --- delete it, and recreate a new | |
264 | one. */ | |
265 | { | |
266 | /* In addition to deleting the thread, if this is the current | |
dcf4fbde PA |
267 | thread, then we need to take care that delete_thread doesn't |
268 | really delete the thread if it is inferior_ptid. Create a | |
269 | new template thread in the list with an invalid ptid, switch | |
270 | to it, delete the original thread, reset the new thread's | |
271 | ptid, and switch to it. */ | |
4f8d22e3 PA |
272 | |
273 | if (ptid_equal (inferior_ptid, ptid)) | |
274 | { | |
c820c52a | 275 | tp = new_thread (null_ptid); |
dcf4fbde PA |
276 | |
277 | /* Make switch_to_thread not read from the thread. */ | |
30596231 | 278 | tp->state = THREAD_EXITED; |
c820c52a | 279 | switch_to_thread (null_ptid); |
4f8d22e3 PA |
280 | |
281 | /* Now we can delete it. */ | |
282 | delete_thread (ptid); | |
283 | ||
dcf4fbde | 284 | /* Now reset its ptid, and reswitch inferior_ptid to it. */ |
4f8d22e3 | 285 | tp->ptid = ptid; |
30596231 | 286 | tp->state = THREAD_STOPPED; |
4f8d22e3 PA |
287 | switch_to_thread (ptid); |
288 | ||
289 | observer_notify_new_thread (tp); | |
290 | ||
291 | /* All done. */ | |
292 | return tp; | |
293 | } | |
294 | else | |
295 | /* Just go ahead and delete it. */ | |
296 | delete_thread (ptid); | |
297 | } | |
298 | ||
e58b0e63 | 299 | tp = new_thread (ptid); |
cfc01461 VP |
300 | observer_notify_new_thread (tp); |
301 | ||
0d06e24b | 302 | return tp; |
c906108c SS |
303 | } |
304 | ||
93815fbf | 305 | struct thread_info * |
fe978cb0 | 306 | add_thread_with_info (ptid_t ptid, struct private_thread_info *priv) |
93815fbf VP |
307 | { |
308 | struct thread_info *result = add_thread_silent (ptid); | |
309 | ||
fe978cb0 | 310 | result->priv = priv; |
17faa917 | 311 | |
93815fbf | 312 | if (print_thread_events) |
fd532e2e | 313 | printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid)); |
d4fc5b1e NR |
314 | |
315 | annotate_new_thread (); | |
93815fbf VP |
316 | return result; |
317 | } | |
318 | ||
17faa917 DJ |
319 | struct thread_info * |
320 | add_thread (ptid_t ptid) | |
321 | { | |
322 | return add_thread_with_info (ptid, NULL); | |
323 | } | |
324 | ||
c2829269 PA |
325 | /* Add TP to the end of the step-over chain LIST_P. */ |
326 | ||
327 | static void | |
328 | step_over_chain_enqueue (struct thread_info **list_p, struct thread_info *tp) | |
329 | { | |
330 | gdb_assert (tp->step_over_next == NULL); | |
331 | gdb_assert (tp->step_over_prev == NULL); | |
332 | ||
333 | if (*list_p == NULL) | |
334 | { | |
335 | *list_p = tp; | |
336 | tp->step_over_prev = tp->step_over_next = tp; | |
337 | } | |
338 | else | |
339 | { | |
340 | struct thread_info *head = *list_p; | |
341 | struct thread_info *tail = head->step_over_prev; | |
342 | ||
343 | tp->step_over_prev = tail; | |
344 | tp->step_over_next = head; | |
345 | head->step_over_prev = tp; | |
346 | tail->step_over_next = tp; | |
347 | } | |
348 | } | |
349 | ||
350 | /* Remove TP from step-over chain LIST_P. */ | |
351 | ||
352 | static void | |
353 | step_over_chain_remove (struct thread_info **list_p, struct thread_info *tp) | |
354 | { | |
355 | gdb_assert (tp->step_over_next != NULL); | |
356 | gdb_assert (tp->step_over_prev != NULL); | |
357 | ||
358 | if (*list_p == tp) | |
359 | { | |
360 | if (tp == tp->step_over_next) | |
361 | *list_p = NULL; | |
362 | else | |
363 | *list_p = tp->step_over_next; | |
364 | } | |
365 | ||
366 | tp->step_over_prev->step_over_next = tp->step_over_next; | |
367 | tp->step_over_next->step_over_prev = tp->step_over_prev; | |
368 | tp->step_over_prev = tp->step_over_next = NULL; | |
369 | } | |
370 | ||
371 | /* See gdbthread.h. */ | |
372 | ||
373 | struct thread_info * | |
374 | thread_step_over_chain_next (struct thread_info *tp) | |
375 | { | |
376 | struct thread_info *next = tp->step_over_next; | |
377 | ||
378 | return (next == step_over_queue_head ? NULL : next); | |
379 | } | |
380 | ||
381 | /* See gdbthread.h. */ | |
382 | ||
383 | int | |
384 | thread_is_in_step_over_chain (struct thread_info *tp) | |
385 | { | |
386 | return (tp->step_over_next != NULL); | |
387 | } | |
388 | ||
389 | /* See gdbthread.h. */ | |
390 | ||
391 | void | |
392 | thread_step_over_chain_enqueue (struct thread_info *tp) | |
393 | { | |
394 | step_over_chain_enqueue (&step_over_queue_head, tp); | |
395 | } | |
396 | ||
397 | /* See gdbthread.h. */ | |
398 | ||
399 | void | |
400 | thread_step_over_chain_remove (struct thread_info *tp) | |
401 | { | |
402 | step_over_chain_remove (&step_over_queue_head, tp); | |
403 | } | |
404 | ||
5e0b29c1 PA |
405 | /* Delete thread PTID. If SILENT, don't notify the observer of this |
406 | exit. */ | |
407 | static void | |
408 | delete_thread_1 (ptid_t ptid, int silent) | |
c906108c SS |
409 | { |
410 | struct thread_info *tp, *tpprev; | |
411 | ||
412 | tpprev = NULL; | |
413 | ||
414 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) | |
39f77062 | 415 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
416 | break; |
417 | ||
418 | if (!tp) | |
419 | return; | |
420 | ||
c2829269 PA |
421 | /* Dead threads don't need to step-over. Remove from queue. */ |
422 | if (tp->step_over_next != NULL) | |
423 | thread_step_over_chain_remove (tp); | |
424 | ||
4f8d22e3 PA |
425 | /* If this is the current thread, or there's code out there that |
426 | relies on it existing (refcount > 0) we can't delete yet. Mark | |
427 | it as exited, and notify it. */ | |
428 | if (tp->refcount > 0 | |
429 | || ptid_equal (tp->ptid, inferior_ptid)) | |
430 | { | |
30596231 | 431 | if (tp->state != THREAD_EXITED) |
4f8d22e3 | 432 | { |
a07daef3 | 433 | observer_notify_thread_exit (tp, silent); |
4f8d22e3 PA |
434 | |
435 | /* Tag it as exited. */ | |
30596231 | 436 | tp->state = THREAD_EXITED; |
4f8d22e3 PA |
437 | |
438 | /* Clear breakpoints, etc. associated with this thread. */ | |
439 | clear_thread_inferior_resources (tp); | |
440 | } | |
441 | ||
442 | /* Will be really deleted some other time. */ | |
443 | return; | |
444 | } | |
445 | ||
fa4cd53f | 446 | /* Notify thread exit, but only if we haven't already. */ |
30596231 | 447 | if (tp->state != THREAD_EXITED) |
fa4cd53f PA |
448 | observer_notify_thread_exit (tp, silent); |
449 | ||
450 | /* Tag it as exited. */ | |
30596231 | 451 | tp->state = THREAD_EXITED; |
fa4cd53f PA |
452 | clear_thread_inferior_resources (tp); |
453 | ||
c906108c SS |
454 | if (tpprev) |
455 | tpprev->next = tp->next; | |
456 | else | |
457 | thread_list = tp->next; | |
458 | ||
7c952b6d | 459 | free_thread (tp); |
c906108c SS |
460 | } |
461 | ||
4f8d22e3 PA |
462 | /* Delete thread PTID and notify of thread exit. If this is |
463 | inferior_ptid, don't actually delete it, but tag it as exited and | |
464 | do the notification. If PTID is the user selected thread, clear | |
465 | it. */ | |
5e0b29c1 PA |
466 | void |
467 | delete_thread (ptid_t ptid) | |
468 | { | |
469 | delete_thread_1 (ptid, 0 /* not silent */); | |
470 | } | |
471 | ||
472 | void | |
473 | delete_thread_silent (ptid_t ptid) | |
474 | { | |
475 | delete_thread_1 (ptid, 1 /* silent */); | |
476 | } | |
477 | ||
1e92afda | 478 | struct thread_info * |
fba45db2 | 479 | find_thread_id (int num) |
c906108c SS |
480 | { |
481 | struct thread_info *tp; | |
482 | ||
483 | for (tp = thread_list; tp; tp = tp->next) | |
484 | if (tp->num == num) | |
485 | return tp; | |
486 | ||
487 | return NULL; | |
488 | } | |
489 | ||
39f77062 | 490 | /* Find a thread_info by matching PTID. */ |
0d06e24b | 491 | struct thread_info * |
e09875d4 | 492 | find_thread_ptid (ptid_t ptid) |
0d06e24b JM |
493 | { |
494 | struct thread_info *tp; | |
495 | ||
496 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 497 | if (ptid_equal (tp->ptid, ptid)) |
0d06e24b JM |
498 | return tp; |
499 | ||
500 | return NULL; | |
501 | } | |
502 | ||
503 | /* | |
504 | * Thread iterator function. | |
505 | * | |
506 | * Calls a callback function once for each thread, so long as | |
507 | * the callback function returns false. If the callback function | |
508 | * returns true, the iteration will end and the current thread | |
509 | * will be returned. This can be useful for implementing a | |
510 | * search for a thread with arbitrary attributes, or for applying | |
511 | * some operation to every thread. | |
512 | * | |
513 | * FIXME: some of the existing functionality, such as | |
514 | * "Thread apply all", might be rewritten using this functionality. | |
515 | */ | |
516 | ||
517 | struct thread_info * | |
fd118b61 KB |
518 | iterate_over_threads (int (*callback) (struct thread_info *, void *), |
519 | void *data) | |
0d06e24b | 520 | { |
4f8d22e3 | 521 | struct thread_info *tp, *next; |
0d06e24b | 522 | |
4f8d22e3 PA |
523 | for (tp = thread_list; tp; tp = next) |
524 | { | |
525 | next = tp->next; | |
526 | if ((*callback) (tp, data)) | |
527 | return tp; | |
528 | } | |
0d06e24b JM |
529 | |
530 | return NULL; | |
531 | } | |
532 | ||
20874c92 VP |
533 | int |
534 | thread_count (void) | |
535 | { | |
536 | int result = 0; | |
537 | struct thread_info *tp; | |
538 | ||
539 | for (tp = thread_list; tp; tp = tp->next) | |
540 | ++result; | |
541 | ||
542 | return result; | |
543 | } | |
544 | ||
c906108c | 545 | int |
fba45db2 | 546 | valid_thread_id (int num) |
c906108c SS |
547 | { |
548 | struct thread_info *tp; | |
549 | ||
550 | for (tp = thread_list; tp; tp = tp->next) | |
551 | if (tp->num == num) | |
552 | return 1; | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
557 | int | |
39f77062 | 558 | pid_to_thread_id (ptid_t ptid) |
c906108c SS |
559 | { |
560 | struct thread_info *tp; | |
561 | ||
562 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 563 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
564 | return tp->num; |
565 | ||
566 | return 0; | |
567 | } | |
568 | ||
39f77062 | 569 | ptid_t |
fba45db2 | 570 | thread_id_to_pid (int num) |
c906108c SS |
571 | { |
572 | struct thread_info *thread = find_thread_id (num); | |
5d502164 | 573 | |
c906108c | 574 | if (thread) |
39f77062 | 575 | return thread->ptid; |
c906108c | 576 | else |
39f77062 | 577 | return pid_to_ptid (-1); |
c906108c SS |
578 | } |
579 | ||
580 | int | |
39f77062 | 581 | in_thread_list (ptid_t ptid) |
c906108c SS |
582 | { |
583 | struct thread_info *tp; | |
584 | ||
585 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 586 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
587 | return 1; |
588 | ||
c378eb4e | 589 | return 0; /* Never heard of 'im. */ |
c906108c | 590 | } |
8926118c | 591 | |
bad34192 PA |
592 | /* Finds the first thread of the inferior given by PID. If PID is -1, |
593 | return the first thread in the list. */ | |
594 | ||
595 | struct thread_info * | |
596 | first_thread_of_process (int pid) | |
597 | { | |
598 | struct thread_info *tp, *ret = NULL; | |
599 | ||
600 | for (tp = thread_list; tp; tp = tp->next) | |
601 | if (pid == -1 || ptid_get_pid (tp->ptid) == pid) | |
602 | if (ret == NULL || tp->num < ret->num) | |
603 | ret = tp; | |
604 | ||
605 | return ret; | |
606 | } | |
607 | ||
2277426b PA |
608 | struct thread_info * |
609 | any_thread_of_process (int pid) | |
610 | { | |
611 | struct thread_info *tp; | |
612 | ||
32990ada PA |
613 | gdb_assert (pid != 0); |
614 | ||
615 | /* Prefer the current thread. */ | |
616 | if (ptid_get_pid (inferior_ptid) == pid) | |
617 | return inferior_thread (); | |
618 | ||
619 | ALL_NON_EXITED_THREADS (tp) | |
2277426b PA |
620 | if (ptid_get_pid (tp->ptid) == pid) |
621 | return tp; | |
622 | ||
623 | return NULL; | |
624 | } | |
625 | ||
6c95b8df PA |
626 | struct thread_info * |
627 | any_live_thread_of_process (int pid) | |
628 | { | |
32990ada | 629 | struct thread_info *curr_tp = NULL; |
6c95b8df | 630 | struct thread_info *tp; |
9941e0c5 | 631 | struct thread_info *tp_executing = NULL; |
6c95b8df | 632 | |
32990ada PA |
633 | gdb_assert (pid != 0); |
634 | ||
635 | /* Prefer the current thread if it's not executing. */ | |
636 | if (ptid_get_pid (inferior_ptid) == pid) | |
637 | { | |
638 | /* If the current thread is dead, forget it. If it's not | |
639 | executing, use it. Otherwise, still choose it (below), but | |
640 | only if no other non-executing thread is found. */ | |
641 | curr_tp = inferior_thread (); | |
642 | if (curr_tp->state == THREAD_EXITED) | |
643 | curr_tp = NULL; | |
644 | else if (!curr_tp->executing) | |
645 | return curr_tp; | |
646 | } | |
647 | ||
648 | ALL_NON_EXITED_THREADS (tp) | |
649 | if (ptid_get_pid (tp->ptid) == pid) | |
6c95b8df | 650 | { |
32990ada | 651 | if (!tp->executing) |
6c95b8df | 652 | return tp; |
32990ada PA |
653 | |
654 | tp_executing = tp; | |
6c95b8df PA |
655 | } |
656 | ||
32990ada PA |
657 | /* If both the current thread and all live threads are executing, |
658 | prefer the current thread. */ | |
659 | if (curr_tp != NULL) | |
660 | return curr_tp; | |
661 | ||
662 | /* Otherwise, just return an executing thread, if any. */ | |
9941e0c5 | 663 | return tp_executing; |
6c95b8df PA |
664 | } |
665 | ||
8b93c638 | 666 | /* Print a list of thread ids currently known, and the total number of |
c378eb4e | 667 | threads. To be used from within catch_errors. */ |
6949171e JJ |
668 | static int |
669 | do_captured_list_thread_ids (struct ui_out *uiout, void *arg) | |
8b93c638 JM |
670 | { |
671 | struct thread_info *tp; | |
672 | int num = 0; | |
3b31d625 | 673 | struct cleanup *cleanup_chain; |
592375cd | 674 | int current_thread = -1; |
8b93c638 | 675 | |
dc146f7c | 676 | update_thread_list (); |
7990a578 | 677 | |
3b31d625 | 678 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "thread-ids"); |
8b93c638 JM |
679 | |
680 | for (tp = thread_list; tp; tp = tp->next) | |
681 | { | |
30596231 | 682 | if (tp->state == THREAD_EXITED) |
4f8d22e3 | 683 | continue; |
592375cd VP |
684 | |
685 | if (ptid_equal (tp->ptid, inferior_ptid)) | |
686 | current_thread = tp->num; | |
687 | ||
8b93c638 JM |
688 | num++; |
689 | ui_out_field_int (uiout, "thread-id", tp->num); | |
690 | } | |
691 | ||
3b31d625 | 692 | do_cleanups (cleanup_chain); |
592375cd VP |
693 | |
694 | if (current_thread != -1) | |
695 | ui_out_field_int (uiout, "current-thread-id", current_thread); | |
8b93c638 JM |
696 | ui_out_field_int (uiout, "number-of-threads", num); |
697 | return GDB_RC_OK; | |
698 | } | |
699 | ||
700 | /* Official gdblib interface function to get a list of thread ids and | |
c378eb4e | 701 | the total number. */ |
8b93c638 | 702 | enum gdb_rc |
ce43223b | 703 | gdb_list_thread_ids (struct ui_out *uiout, char **error_message) |
8b93c638 | 704 | { |
b0b13bb4 DJ |
705 | if (catch_exceptions_with_msg (uiout, do_captured_list_thread_ids, NULL, |
706 | error_message, RETURN_MASK_ALL) < 0) | |
707 | return GDB_RC_FAIL; | |
708 | return GDB_RC_OK; | |
8b93c638 | 709 | } |
c906108c | 710 | |
c378eb4e | 711 | /* Return true if TP is an active thread. */ |
c906108c | 712 | static int |
fba45db2 | 713 | thread_alive (struct thread_info *tp) |
c906108c | 714 | { |
30596231 | 715 | if (tp->state == THREAD_EXITED) |
c906108c | 716 | return 0; |
39f77062 | 717 | if (!target_thread_alive (tp->ptid)) |
4f8d22e3 | 718 | return 0; |
c906108c SS |
719 | return 1; |
720 | } | |
721 | ||
e8032dde PA |
722 | /* See gdbthreads.h. */ |
723 | ||
724 | void | |
fba45db2 | 725 | prune_threads (void) |
c906108c | 726 | { |
8a06aea7 | 727 | struct thread_info *tp, *tmp; |
c906108c | 728 | |
8a06aea7 | 729 | ALL_THREADS_SAFE (tp, tmp) |
c906108c | 730 | { |
c906108c | 731 | if (!thread_alive (tp)) |
39f77062 | 732 | delete_thread (tp->ptid); |
c906108c SS |
733 | } |
734 | } | |
735 | ||
8a06aea7 PA |
736 | /* See gdbthreads.h. */ |
737 | ||
738 | void | |
739 | delete_exited_threads (void) | |
740 | { | |
741 | struct thread_info *tp, *tmp; | |
742 | ||
743 | ALL_THREADS_SAFE (tp, tmp) | |
744 | { | |
745 | if (tp->state == THREAD_EXITED) | |
746 | delete_thread (tp->ptid); | |
747 | } | |
748 | } | |
749 | ||
6c659fc2 SC |
750 | /* Disable storing stack temporaries for the thread whose id is |
751 | stored in DATA. */ | |
752 | ||
753 | static void | |
754 | disable_thread_stack_temporaries (void *data) | |
755 | { | |
756 | ptid_t *pd = data; | |
757 | struct thread_info *tp = find_thread_ptid (*pd); | |
758 | ||
759 | if (tp != NULL) | |
760 | { | |
761 | tp->stack_temporaries_enabled = 0; | |
762 | VEC_free (value_ptr, tp->stack_temporaries); | |
763 | } | |
764 | ||
765 | xfree (pd); | |
766 | } | |
767 | ||
768 | /* Enable storing stack temporaries for thread with id PTID and return a | |
769 | cleanup which can disable and clear the stack temporaries. */ | |
770 | ||
771 | struct cleanup * | |
772 | enable_thread_stack_temporaries (ptid_t ptid) | |
773 | { | |
774 | struct thread_info *tp = find_thread_ptid (ptid); | |
775 | ptid_t *data; | |
776 | struct cleanup *c; | |
777 | ||
778 | gdb_assert (tp != NULL); | |
779 | ||
780 | tp->stack_temporaries_enabled = 1; | |
781 | tp->stack_temporaries = NULL; | |
8d749320 | 782 | data = XNEW (ptid_t); |
6c659fc2 SC |
783 | *data = ptid; |
784 | c = make_cleanup (disable_thread_stack_temporaries, data); | |
785 | ||
786 | return c; | |
787 | } | |
788 | ||
789 | /* Return non-zero value if stack temporaies are enabled for the thread | |
790 | with id PTID. */ | |
791 | ||
792 | int | |
793 | thread_stack_temporaries_enabled_p (ptid_t ptid) | |
794 | { | |
795 | struct thread_info *tp = find_thread_ptid (ptid); | |
796 | ||
797 | if (tp == NULL) | |
798 | return 0; | |
799 | else | |
800 | return tp->stack_temporaries_enabled; | |
801 | } | |
802 | ||
803 | /* Push V on to the stack temporaries of the thread with id PTID. */ | |
804 | ||
805 | void | |
806 | push_thread_stack_temporary (ptid_t ptid, struct value *v) | |
807 | { | |
808 | struct thread_info *tp = find_thread_ptid (ptid); | |
809 | ||
810 | gdb_assert (tp != NULL && tp->stack_temporaries_enabled); | |
811 | VEC_safe_push (value_ptr, tp->stack_temporaries, v); | |
812 | } | |
813 | ||
814 | /* Return 1 if VAL is among the stack temporaries of the thread | |
815 | with id PTID. Return 0 otherwise. */ | |
816 | ||
817 | int | |
818 | value_in_thread_stack_temporaries (struct value *val, ptid_t ptid) | |
819 | { | |
820 | struct thread_info *tp = find_thread_ptid (ptid); | |
821 | ||
822 | gdb_assert (tp != NULL && tp->stack_temporaries_enabled); | |
823 | if (!VEC_empty (value_ptr, tp->stack_temporaries)) | |
824 | { | |
825 | struct value *v; | |
826 | int i; | |
827 | ||
828 | for (i = 0; VEC_iterate (value_ptr, tp->stack_temporaries, i, v); i++) | |
829 | if (v == val) | |
830 | return 1; | |
831 | } | |
832 | ||
833 | return 0; | |
834 | } | |
835 | ||
836 | /* Return the last of the stack temporaries for thread with id PTID. | |
837 | Return NULL if there are no stack temporaries for the thread. */ | |
838 | ||
839 | struct value * | |
840 | get_last_thread_stack_temporary (ptid_t ptid) | |
841 | { | |
842 | struct value *lastval = NULL; | |
843 | struct thread_info *tp = find_thread_ptid (ptid); | |
844 | ||
845 | gdb_assert (tp != NULL); | |
846 | if (!VEC_empty (value_ptr, tp->stack_temporaries)) | |
847 | lastval = VEC_last (value_ptr, tp->stack_temporaries); | |
848 | ||
849 | return lastval; | |
850 | } | |
851 | ||
5231c1fd PA |
852 | void |
853 | thread_change_ptid (ptid_t old_ptid, ptid_t new_ptid) | |
854 | { | |
82f73884 PA |
855 | struct inferior *inf; |
856 | struct thread_info *tp; | |
857 | ||
858 | /* It can happen that what we knew as the target inferior id | |
859 | changes. E.g, target remote may only discover the remote process | |
860 | pid after adding the inferior to GDB's list. */ | |
c9657e70 | 861 | inf = find_inferior_ptid (old_ptid); |
82f73884 PA |
862 | inf->pid = ptid_get_pid (new_ptid); |
863 | ||
e09875d4 | 864 | tp = find_thread_ptid (old_ptid); |
5231c1fd PA |
865 | tp->ptid = new_ptid; |
866 | ||
867 | observer_notify_thread_ptid_changed (old_ptid, new_ptid); | |
868 | } | |
869 | ||
372316f1 PA |
870 | /* See gdbthread.h. */ |
871 | ||
872 | void | |
873 | set_resumed (ptid_t ptid, int resumed) | |
874 | { | |
875 | struct thread_info *tp; | |
876 | int all = ptid_equal (ptid, minus_one_ptid); | |
877 | ||
878 | if (all || ptid_is_pid (ptid)) | |
879 | { | |
880 | for (tp = thread_list; tp; tp = tp->next) | |
881 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) | |
882 | tp->resumed = resumed; | |
883 | } | |
884 | else | |
885 | { | |
886 | tp = find_thread_ptid (ptid); | |
887 | gdb_assert (tp != NULL); | |
888 | tp->resumed = resumed; | |
889 | } | |
890 | } | |
891 | ||
4d9d9d04 PA |
892 | /* Helper for set_running, that marks one thread either running or |
893 | stopped. */ | |
894 | ||
895 | static int | |
896 | set_running_thread (struct thread_info *tp, int running) | |
897 | { | |
898 | int started = 0; | |
899 | ||
900 | if (running && tp->state == THREAD_STOPPED) | |
901 | started = 1; | |
902 | tp->state = running ? THREAD_RUNNING : THREAD_STOPPED; | |
903 | ||
904 | if (!running) | |
905 | { | |
906 | /* If the thread is now marked stopped, remove it from | |
907 | the step-over queue, so that we don't try to resume | |
908 | it until the user wants it to. */ | |
909 | if (tp->step_over_next != NULL) | |
910 | thread_step_over_chain_remove (tp); | |
911 | } | |
912 | ||
913 | return started; | |
914 | } | |
915 | ||
e1ac3328 VP |
916 | void |
917 | set_running (ptid_t ptid, int running) | |
918 | { | |
919 | struct thread_info *tp; | |
d90e17a7 | 920 | int all = ptid_equal (ptid, minus_one_ptid); |
4d9d9d04 | 921 | int any_started = 0; |
e1ac3328 | 922 | |
e1ac3328 VP |
923 | /* We try not to notify the observer if no thread has actually changed |
924 | the running state -- merely to reduce the number of messages to | |
925 | frontend. Frontend is supposed to handle multiple *running just fine. */ | |
d90e17a7 | 926 | if (all || ptid_is_pid (ptid)) |
e1ac3328 | 927 | { |
e1ac3328 | 928 | for (tp = thread_list; tp; tp = tp->next) |
d90e17a7 PA |
929 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) |
930 | { | |
30596231 | 931 | if (tp->state == THREAD_EXITED) |
d90e17a7 | 932 | continue; |
4d9d9d04 PA |
933 | |
934 | if (set_running_thread (tp, running)) | |
d90e17a7 | 935 | any_started = 1; |
d90e17a7 | 936 | } |
e1ac3328 VP |
937 | } |
938 | else | |
939 | { | |
e09875d4 | 940 | tp = find_thread_ptid (ptid); |
4d9d9d04 | 941 | gdb_assert (tp != NULL); |
30596231 | 942 | gdb_assert (tp->state != THREAD_EXITED); |
4d9d9d04 PA |
943 | if (set_running_thread (tp, running)) |
944 | any_started = 1; | |
4f8d22e3 | 945 | } |
4d9d9d04 PA |
946 | if (any_started) |
947 | observer_notify_target_resumed (ptid); | |
e1ac3328 VP |
948 | } |
949 | ||
4f8d22e3 PA |
950 | static int |
951 | is_thread_state (ptid_t ptid, enum thread_state state) | |
e1ac3328 VP |
952 | { |
953 | struct thread_info *tp; | |
954 | ||
e09875d4 | 955 | tp = find_thread_ptid (ptid); |
e1ac3328 | 956 | gdb_assert (tp); |
30596231 | 957 | return tp->state == state; |
4f8d22e3 PA |
958 | } |
959 | ||
960 | int | |
961 | is_stopped (ptid_t ptid) | |
962 | { | |
4f8d22e3 PA |
963 | return is_thread_state (ptid, THREAD_STOPPED); |
964 | } | |
965 | ||
966 | int | |
967 | is_exited (ptid_t ptid) | |
968 | { | |
4f8d22e3 PA |
969 | return is_thread_state (ptid, THREAD_EXITED); |
970 | } | |
971 | ||
972 | int | |
973 | is_running (ptid_t ptid) | |
974 | { | |
4f8d22e3 | 975 | return is_thread_state (ptid, THREAD_RUNNING); |
e1ac3328 VP |
976 | } |
977 | ||
8ea051c5 PA |
978 | int |
979 | is_executing (ptid_t ptid) | |
980 | { | |
981 | struct thread_info *tp; | |
982 | ||
e09875d4 | 983 | tp = find_thread_ptid (ptid); |
8ea051c5 | 984 | gdb_assert (tp); |
30596231 | 985 | return tp->executing; |
8ea051c5 PA |
986 | } |
987 | ||
988 | void | |
989 | set_executing (ptid_t ptid, int executing) | |
990 | { | |
991 | struct thread_info *tp; | |
d90e17a7 | 992 | int all = ptid_equal (ptid, minus_one_ptid); |
8ea051c5 | 993 | |
d90e17a7 | 994 | if (all || ptid_is_pid (ptid)) |
8ea051c5 PA |
995 | { |
996 | for (tp = thread_list; tp; tp = tp->next) | |
d90e17a7 | 997 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) |
30596231 | 998 | tp->executing = executing; |
8ea051c5 PA |
999 | } |
1000 | else | |
1001 | { | |
e09875d4 | 1002 | tp = find_thread_ptid (ptid); |
8ea051c5 | 1003 | gdb_assert (tp); |
30596231 | 1004 | tp->executing = executing; |
8ea051c5 | 1005 | } |
b57bacec PA |
1006 | |
1007 | /* It only takes one running thread to spawn more threads.*/ | |
1008 | if (executing) | |
1009 | threads_executing = 1; | |
1010 | /* Only clear the flag if the caller is telling us everything is | |
1011 | stopped. */ | |
1012 | else if (ptid_equal (minus_one_ptid, ptid)) | |
1013 | threads_executing = 0; | |
1014 | } | |
1015 | ||
1016 | /* See gdbthread.h. */ | |
1017 | ||
1018 | int | |
1019 | threads_are_executing (void) | |
1020 | { | |
1021 | return threads_executing; | |
8ea051c5 PA |
1022 | } |
1023 | ||
252fbfc8 PA |
1024 | void |
1025 | set_stop_requested (ptid_t ptid, int stop) | |
1026 | { | |
1027 | struct thread_info *tp; | |
1028 | int all = ptid_equal (ptid, minus_one_ptid); | |
1029 | ||
1030 | if (all || ptid_is_pid (ptid)) | |
1031 | { | |
1032 | for (tp = thread_list; tp; tp = tp->next) | |
1033 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) | |
1034 | tp->stop_requested = stop; | |
1035 | } | |
1036 | else | |
1037 | { | |
e09875d4 | 1038 | tp = find_thread_ptid (ptid); |
252fbfc8 PA |
1039 | gdb_assert (tp); |
1040 | tp->stop_requested = stop; | |
1041 | } | |
1042 | ||
1043 | /* Call the stop requested observer so other components of GDB can | |
1044 | react to this request. */ | |
1045 | if (stop) | |
1046 | observer_notify_thread_stop_requested (ptid); | |
1047 | } | |
1048 | ||
29f49a6a PA |
1049 | void |
1050 | finish_thread_state (ptid_t ptid) | |
1051 | { | |
1052 | struct thread_info *tp; | |
1053 | int all; | |
1054 | int any_started = 0; | |
1055 | ||
1056 | all = ptid_equal (ptid, minus_one_ptid); | |
1057 | ||
1058 | if (all || ptid_is_pid (ptid)) | |
1059 | { | |
1060 | for (tp = thread_list; tp; tp = tp->next) | |
1061 | { | |
30596231 | 1062 | if (tp->state == THREAD_EXITED) |
29f49a6a PA |
1063 | continue; |
1064 | if (all || ptid_get_pid (ptid) == ptid_get_pid (tp->ptid)) | |
1065 | { | |
4d9d9d04 | 1066 | if (set_running_thread (tp, tp->executing)) |
29f49a6a | 1067 | any_started = 1; |
29f49a6a PA |
1068 | } |
1069 | } | |
1070 | } | |
1071 | else | |
1072 | { | |
e09875d4 | 1073 | tp = find_thread_ptid (ptid); |
29f49a6a | 1074 | gdb_assert (tp); |
30596231 | 1075 | if (tp->state != THREAD_EXITED) |
29f49a6a | 1076 | { |
4d9d9d04 | 1077 | if (set_running_thread (tp, tp->executing)) |
29f49a6a | 1078 | any_started = 1; |
29f49a6a PA |
1079 | } |
1080 | } | |
1081 | ||
1082 | if (any_started) | |
1083 | observer_notify_target_resumed (ptid); | |
1084 | } | |
1085 | ||
1086 | void | |
1087 | finish_thread_state_cleanup (void *arg) | |
1088 | { | |
1089 | ptid_t *ptid_p = arg; | |
1090 | ||
1091 | gdb_assert (arg); | |
1092 | ||
1093 | finish_thread_state (*ptid_p); | |
1094 | } | |
1095 | ||
ce4c476a PA |
1096 | int |
1097 | pc_in_thread_step_range (CORE_ADDR pc, struct thread_info *thread) | |
1098 | { | |
1099 | return (pc >= thread->control.step_range_start | |
1100 | && pc < thread->control.step_range_end); | |
1101 | } | |
1102 | ||
8e8901c5 | 1103 | /* Prints the list of threads and their details on UIOUT. |
aea5b279 | 1104 | This is a version of 'info_threads_command' suitable for |
c378eb4e | 1105 | use from MI. |
4f8d22e3 | 1106 | If REQUESTED_THREAD is not -1, it's the GDB id of the thread |
8e8901c5 | 1107 | that should be printed. Otherwise, all threads are |
c378eb4e | 1108 | printed. |
3ee1c036 | 1109 | If PID is not -1, only print threads from the process PID. |
c378eb4e | 1110 | Otherwise, threads from all attached PIDs are printed. |
3ee1c036 VP |
1111 | If both REQUESTED_THREAD and PID are not -1, then the thread |
1112 | is printed if it belongs to the specified process. Otherwise, | |
1113 | an error is raised. */ | |
8e8901c5 | 1114 | void |
aea5b279 | 1115 | print_thread_info (struct ui_out *uiout, char *requested_threads, int pid) |
c906108c SS |
1116 | { |
1117 | struct thread_info *tp; | |
39f77062 | 1118 | ptid_t current_ptid; |
99b3d574 | 1119 | struct cleanup *old_chain; |
4694da01 | 1120 | char *extra_info, *name, *target_id; |
8e8901c5 | 1121 | int current_thread = -1; |
c906108c | 1122 | |
dc146f7c | 1123 | update_thread_list (); |
39f77062 | 1124 | current_ptid = inferior_ptid; |
4f8d22e3 PA |
1125 | |
1126 | /* We'll be switching threads temporarily. */ | |
1127 | old_chain = make_cleanup_restore_current_thread (); | |
1128 | ||
a7658b96 TT |
1129 | /* For backward compatibility, we make a list for MI. A table is |
1130 | preferable for the CLI, though, because it shows table | |
1131 | headers. */ | |
1132 | if (ui_out_is_mi_like_p (uiout)) | |
1133 | make_cleanup_ui_out_list_begin_end (uiout, "threads"); | |
1134 | else | |
1135 | { | |
1136 | int n_threads = 0; | |
1137 | ||
1138 | for (tp = thread_list; tp; tp = tp->next) | |
1139 | { | |
aea5b279 | 1140 | if (!number_is_in_list (requested_threads, tp->num)) |
a7658b96 TT |
1141 | continue; |
1142 | ||
dfd4cc63 | 1143 | if (pid != -1 && ptid_get_pid (tp->ptid) != pid) |
a7658b96 TT |
1144 | continue; |
1145 | ||
30596231 | 1146 | if (tp->state == THREAD_EXITED) |
a7658b96 TT |
1147 | continue; |
1148 | ||
1149 | ++n_threads; | |
1150 | } | |
1151 | ||
1152 | if (n_threads == 0) | |
1153 | { | |
aea5b279 | 1154 | if (requested_threads == NULL || *requested_threads == '\0') |
a7658b96 TT |
1155 | ui_out_message (uiout, 0, _("No threads.\n")); |
1156 | else | |
aea5b279 MS |
1157 | ui_out_message (uiout, 0, _("No threads match '%s'.\n"), |
1158 | requested_threads); | |
a7658b96 TT |
1159 | do_cleanups (old_chain); |
1160 | return; | |
1161 | } | |
1162 | ||
4694da01 | 1163 | make_cleanup_ui_out_table_begin_end (uiout, 4, n_threads, "threads"); |
a7658b96 TT |
1164 | |
1165 | ui_out_table_header (uiout, 1, ui_left, "current", ""); | |
1166 | ui_out_table_header (uiout, 4, ui_left, "id", "Id"); | |
1167 | ui_out_table_header (uiout, 17, ui_left, "target-id", "Target Id"); | |
a7658b96 TT |
1168 | ui_out_table_header (uiout, 1, ui_left, "frame", "Frame"); |
1169 | ui_out_table_body (uiout); | |
1170 | } | |
1171 | ||
c906108c SS |
1172 | for (tp = thread_list; tp; tp = tp->next) |
1173 | { | |
8e8901c5 | 1174 | struct cleanup *chain2; |
dc146f7c | 1175 | int core; |
8e8901c5 | 1176 | |
aea5b279 | 1177 | if (!number_is_in_list (requested_threads, tp->num)) |
8e8901c5 VP |
1178 | continue; |
1179 | ||
dfd4cc63 | 1180 | if (pid != -1 && ptid_get_pid (tp->ptid) != pid) |
3ee1c036 | 1181 | { |
aea5b279 | 1182 | if (requested_threads != NULL && *requested_threads != '\0') |
3ee1c036 VP |
1183 | error (_("Requested thread not found in requested process")); |
1184 | continue; | |
1185 | } | |
1186 | ||
4f8d22e3 PA |
1187 | if (ptid_equal (tp->ptid, current_ptid)) |
1188 | current_thread = tp->num; | |
1189 | ||
30596231 | 1190 | if (tp->state == THREAD_EXITED) |
4f8d22e3 PA |
1191 | continue; |
1192 | ||
8e8901c5 VP |
1193 | chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); |
1194 | ||
a7658b96 TT |
1195 | if (ui_out_is_mi_like_p (uiout)) |
1196 | { | |
1197 | /* Compatibility. */ | |
1198 | if (ptid_equal (tp->ptid, current_ptid)) | |
1199 | ui_out_text (uiout, "* "); | |
1200 | else | |
1201 | ui_out_text (uiout, " "); | |
1202 | } | |
c906108c | 1203 | else |
a7658b96 TT |
1204 | { |
1205 | if (ptid_equal (tp->ptid, current_ptid)) | |
1206 | ui_out_field_string (uiout, "current", "*"); | |
1207 | else | |
1208 | ui_out_field_skip (uiout, "current"); | |
1209 | } | |
c906108c | 1210 | |
8e8901c5 | 1211 | ui_out_field_int (uiout, "id", tp->num); |
0d06e24b | 1212 | |
4694da01 TT |
1213 | /* For the CLI, we stuff everything into the target-id field. |
1214 | This is a gross hack to make the output come out looking | |
1215 | correct. The underlying problem here is that ui-out has no | |
1216 | way to specify that a field's space allocation should be | |
1217 | shared by several fields. For MI, we do the right thing | |
1218 | instead. */ | |
1219 | ||
1220 | target_id = target_pid_to_str (tp->ptid); | |
ed406532 | 1221 | extra_info = target_extra_thread_info (tp); |
4694da01 TT |
1222 | name = tp->name ? tp->name : target_thread_name (tp); |
1223 | ||
1224 | if (ui_out_is_mi_like_p (uiout)) | |
8e8901c5 | 1225 | { |
4694da01 TT |
1226 | ui_out_field_string (uiout, "target-id", target_id); |
1227 | if (extra_info) | |
1228 | ui_out_field_string (uiout, "details", extra_info); | |
1229 | if (name) | |
1230 | ui_out_field_string (uiout, "name", name); | |
1231 | } | |
1232 | else | |
1233 | { | |
1234 | struct cleanup *str_cleanup; | |
1235 | char *contents; | |
1236 | ||
1237 | if (extra_info && name) | |
1238 | contents = xstrprintf ("%s \"%s\" (%s)", target_id, | |
1239 | name, extra_info); | |
1240 | else if (extra_info) | |
1241 | contents = xstrprintf ("%s (%s)", target_id, extra_info); | |
1242 | else if (name) | |
1243 | contents = xstrprintf ("%s \"%s\"", target_id, name); | |
1244 | else | |
1245 | contents = xstrdup (target_id); | |
1246 | str_cleanup = make_cleanup (xfree, contents); | |
1247 | ||
1248 | ui_out_field_string (uiout, "target-id", contents); | |
1249 | do_cleanups (str_cleanup); | |
8e8901c5 | 1250 | } |
4f8d22e3 | 1251 | |
30596231 | 1252 | if (tp->state == THREAD_RUNNING) |
94cc34af PA |
1253 | ui_out_text (uiout, "(running)\n"); |
1254 | else | |
1255 | { | |
1256 | /* The switch below puts us at the top of the stack (leaf | |
1257 | frame). */ | |
1258 | switch_to_thread (tp->ptid); | |
1259 | print_stack_frame (get_selected_frame (NULL), | |
1260 | /* For MI output, print frame level. */ | |
1261 | ui_out_is_mi_like_p (uiout), | |
08d72866 | 1262 | LOCATION, 0); |
94cc34af | 1263 | } |
8e8901c5 | 1264 | |
90139f7d VP |
1265 | if (ui_out_is_mi_like_p (uiout)) |
1266 | { | |
1267 | char *state = "stopped"; | |
5d502164 | 1268 | |
30596231 | 1269 | if (tp->state == THREAD_RUNNING) |
90139f7d VP |
1270 | state = "running"; |
1271 | ui_out_field_string (uiout, "state", state); | |
1272 | } | |
1273 | ||
dc146f7c VP |
1274 | core = target_core_of_thread (tp->ptid); |
1275 | if (ui_out_is_mi_like_p (uiout) && core != -1) | |
1276 | ui_out_field_int (uiout, "core", core); | |
1277 | ||
8e8901c5 | 1278 | do_cleanups (chain2); |
c906108c SS |
1279 | } |
1280 | ||
99b3d574 DP |
1281 | /* Restores the current thread and the frame selected before |
1282 | the "info threads" command. */ | |
1283 | do_cleanups (old_chain); | |
c906108c | 1284 | |
aea5b279 | 1285 | if (pid == -1 && requested_threads == NULL) |
8e8901c5 | 1286 | { |
4f8d22e3 | 1287 | gdb_assert (current_thread != -1 |
d729566a PA |
1288 | || !thread_list |
1289 | || ptid_equal (inferior_ptid, null_ptid)); | |
0bcd3e20 | 1290 | if (current_thread != -1 && ui_out_is_mi_like_p (uiout)) |
8e8901c5 | 1291 | ui_out_field_int (uiout, "current-thread-id", current_thread); |
94cc34af | 1292 | |
4f8d22e3 PA |
1293 | if (current_thread != -1 && is_exited (current_ptid)) |
1294 | ui_out_message (uiout, 0, "\n\ | |
1295 | The current thread <Thread ID %d> has terminated. See `help thread'.\n", | |
1296 | current_thread); | |
d729566a PA |
1297 | else if (thread_list |
1298 | && current_thread == -1 | |
1299 | && ptid_equal (current_ptid, null_ptid)) | |
1300 | ui_out_message (uiout, 0, "\n\ | |
1301 | No selected thread. See `help thread'.\n"); | |
c906108c | 1302 | } |
c906108c SS |
1303 | } |
1304 | ||
8e8901c5 VP |
1305 | /* Print information about currently known threads |
1306 | ||
60f98dde MS |
1307 | Optional ARG is a thread id, or list of thread ids. |
1308 | ||
1309 | Note: this has the drawback that it _really_ switches | |
1310 | threads, which frees the frame cache. A no-side | |
1311 | effects info-threads command would be nicer. */ | |
8e8901c5 VP |
1312 | |
1313 | static void | |
1314 | info_threads_command (char *arg, int from_tty) | |
1315 | { | |
79a45e25 | 1316 | print_thread_info (current_uiout, arg, -1); |
8e8901c5 VP |
1317 | } |
1318 | ||
c378eb4e | 1319 | /* Switch from one thread to another. */ |
c906108c | 1320 | |
6a6b96b9 | 1321 | void |
39f77062 | 1322 | switch_to_thread (ptid_t ptid) |
c906108c | 1323 | { |
6c95b8df PA |
1324 | /* Switch the program space as well, if we can infer it from the now |
1325 | current thread. Otherwise, it's up to the caller to select the | |
1326 | space it wants. */ | |
1327 | if (!ptid_equal (ptid, null_ptid)) | |
1328 | { | |
1329 | struct inferior *inf; | |
1330 | ||
c9657e70 | 1331 | inf = find_inferior_ptid (ptid); |
6c95b8df PA |
1332 | gdb_assert (inf != NULL); |
1333 | set_current_program_space (inf->pspace); | |
1334 | set_current_inferior (inf); | |
1335 | } | |
1336 | ||
39f77062 | 1337 | if (ptid_equal (ptid, inferior_ptid)) |
c906108c SS |
1338 | return; |
1339 | ||
39f77062 | 1340 | inferior_ptid = ptid; |
35f196d9 | 1341 | reinit_frame_cache (); |
94cc34af | 1342 | |
4f8d22e3 PA |
1343 | /* We don't check for is_stopped, because we're called at times |
1344 | while in the TARGET_RUNNING state, e.g., while handling an | |
1345 | internal event. */ | |
d729566a PA |
1346 | if (!ptid_equal (inferior_ptid, null_ptid) |
1347 | && !is_exited (ptid) | |
1348 | && !is_executing (ptid)) | |
fb14de7b | 1349 | stop_pc = regcache_read_pc (get_thread_regcache (ptid)); |
94cc34af PA |
1350 | else |
1351 | stop_pc = ~(CORE_ADDR) 0; | |
c906108c SS |
1352 | } |
1353 | ||
1354 | static void | |
39f77062 | 1355 | restore_current_thread (ptid_t ptid) |
c906108c | 1356 | { |
dcf4fbde | 1357 | switch_to_thread (ptid); |
99b3d574 DP |
1358 | } |
1359 | ||
1360 | static void | |
4f8d22e3 | 1361 | restore_selected_frame (struct frame_id a_frame_id, int frame_level) |
99b3d574 | 1362 | { |
4f8d22e3 PA |
1363 | struct frame_info *frame = NULL; |
1364 | int count; | |
1365 | ||
eb8c0621 TT |
1366 | /* This means there was no selected frame. */ |
1367 | if (frame_level == -1) | |
1368 | { | |
1369 | select_frame (NULL); | |
1370 | return; | |
1371 | } | |
1372 | ||
4f8d22e3 PA |
1373 | gdb_assert (frame_level >= 0); |
1374 | ||
1375 | /* Restore by level first, check if the frame id is the same as | |
1376 | expected. If that fails, try restoring by frame id. If that | |
1377 | fails, nothing to do, just warn the user. */ | |
1378 | ||
1379 | count = frame_level; | |
1380 | frame = find_relative_frame (get_current_frame (), &count); | |
1381 | if (count == 0 | |
1382 | && frame != NULL | |
005ca36a JB |
1383 | /* The frame ids must match - either both valid or both outer_frame_id. |
1384 | The latter case is not failsafe, but since it's highly unlikely | |
4f8d22e3 PA |
1385 | the search by level finds the wrong frame, it's 99.9(9)% of |
1386 | the time (for all practical purposes) safe. */ | |
005ca36a | 1387 | && frame_id_eq (get_frame_id (frame), a_frame_id)) |
4f8d22e3 PA |
1388 | { |
1389 | /* Cool, all is fine. */ | |
1390 | select_frame (frame); | |
1391 | return; | |
1392 | } | |
99b3d574 | 1393 | |
4f8d22e3 PA |
1394 | frame = frame_find_by_id (a_frame_id); |
1395 | if (frame != NULL) | |
1396 | { | |
1397 | /* Cool, refound it. */ | |
1398 | select_frame (frame); | |
1399 | return; | |
1400 | } | |
99b3d574 | 1401 | |
0c501536 PA |
1402 | /* Nothing else to do, the frame layout really changed. Select the |
1403 | innermost stack frame. */ | |
1404 | select_frame (get_current_frame ()); | |
1405 | ||
1406 | /* Warn the user. */ | |
79a45e25 | 1407 | if (frame_level > 0 && !ui_out_is_mi_like_p (current_uiout)) |
99b3d574 | 1408 | { |
3e43a32a | 1409 | warning (_("Couldn't restore frame #%d in " |
e0162910 | 1410 | "current thread. Bottom (innermost) frame selected:"), |
4f8d22e3 PA |
1411 | frame_level); |
1412 | /* For MI, we should probably have a notification about | |
1413 | current frame change. But this error is not very | |
1414 | likely, so don't bother for now. */ | |
08d72866 | 1415 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
1416 | } |
1417 | } | |
1418 | ||
e1316e60 PA |
1419 | /* Data used by the cleanup installed by |
1420 | 'make_cleanup_restore_current_thread'. */ | |
1421 | ||
6ecce94d AC |
1422 | struct current_thread_cleanup |
1423 | { | |
e1316e60 PA |
1424 | /* Next in list of currently installed 'struct |
1425 | current_thread_cleanup' cleanups. See | |
1426 | 'current_thread_cleanup_chain' below. */ | |
1427 | struct current_thread_cleanup *next; | |
1428 | ||
39f77062 | 1429 | ptid_t inferior_ptid; |
99b3d574 | 1430 | struct frame_id selected_frame_id; |
4f8d22e3 PA |
1431 | int selected_frame_level; |
1432 | int was_stopped; | |
6c95b8df | 1433 | int inf_id; |
9addecb9 | 1434 | int was_removable; |
6ecce94d AC |
1435 | }; |
1436 | ||
e1316e60 PA |
1437 | /* A chain of currently installed 'struct current_thread_cleanup' |
1438 | cleanups. Restoring the previously selected thread looks up the | |
1439 | old thread in the thread list by ptid. If the thread changes ptid, | |
1440 | we need to update the cleanup's thread structure so the look up | |
1441 | succeeds. */ | |
1442 | static struct current_thread_cleanup *current_thread_cleanup_chain; | |
1443 | ||
1444 | /* A thread_ptid_changed observer. Update all currently installed | |
1445 | current_thread_cleanup cleanups that want to switch back to | |
1446 | OLD_PTID to switch back to NEW_PTID instead. */ | |
1447 | ||
1448 | static void | |
1449 | restore_current_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) | |
1450 | { | |
1451 | struct current_thread_cleanup *it; | |
1452 | ||
1453 | for (it = current_thread_cleanup_chain; it != NULL; it = it->next) | |
1454 | { | |
1455 | if (ptid_equal (it->inferior_ptid, old_ptid)) | |
1456 | it->inferior_ptid = new_ptid; | |
1457 | } | |
1458 | } | |
1459 | ||
6ecce94d AC |
1460 | static void |
1461 | do_restore_current_thread_cleanup (void *arg) | |
1462 | { | |
4f8d22e3 | 1463 | struct thread_info *tp; |
6ecce94d | 1464 | struct current_thread_cleanup *old = arg; |
d729566a | 1465 | |
e09875d4 | 1466 | tp = find_thread_ptid (old->inferior_ptid); |
d729566a PA |
1467 | |
1468 | /* If the previously selected thread belonged to a process that has | |
1469 | in the mean time been deleted (due to normal exit, detach, etc.), | |
1470 | then don't revert back to it, but instead simply drop back to no | |
1471 | thread selected. */ | |
1472 | if (tp | |
c9657e70 | 1473 | && find_inferior_ptid (tp->ptid) != NULL) |
d729566a | 1474 | restore_current_thread (old->inferior_ptid); |
88fc996f | 1475 | else |
6c95b8df PA |
1476 | { |
1477 | restore_current_thread (null_ptid); | |
1478 | set_current_inferior (find_inferior_id (old->inf_id)); | |
1479 | } | |
94cc34af | 1480 | |
4f8d22e3 PA |
1481 | /* The running state of the originally selected thread may have |
1482 | changed, so we have to recheck it here. */ | |
d729566a PA |
1483 | if (!ptid_equal (inferior_ptid, null_ptid) |
1484 | && old->was_stopped | |
4f8d22e3 PA |
1485 | && is_stopped (inferior_ptid) |
1486 | && target_has_registers | |
1487 | && target_has_stack | |
1488 | && target_has_memory) | |
1489 | restore_selected_frame (old->selected_frame_id, | |
1490 | old->selected_frame_level); | |
1491 | } | |
1492 | ||
1493 | static void | |
1494 | restore_current_thread_cleanup_dtor (void *arg) | |
1495 | { | |
1496 | struct current_thread_cleanup *old = arg; | |
1497 | struct thread_info *tp; | |
9addecb9 | 1498 | struct inferior *inf; |
5d502164 | 1499 | |
e1316e60 PA |
1500 | current_thread_cleanup_chain = current_thread_cleanup_chain->next; |
1501 | ||
e09875d4 | 1502 | tp = find_thread_ptid (old->inferior_ptid); |
4f8d22e3 PA |
1503 | if (tp) |
1504 | tp->refcount--; | |
9addecb9 TT |
1505 | inf = find_inferior_id (old->inf_id); |
1506 | if (inf != NULL) | |
1507 | inf->removable = old->was_removable; | |
b8c9b27d | 1508 | xfree (old); |
6ecce94d AC |
1509 | } |
1510 | ||
054e8d9e AA |
1511 | /* Set the thread reference count. */ |
1512 | ||
1513 | static void | |
1514 | set_thread_refcount (void *data) | |
1515 | { | |
1516 | int k; | |
1517 | struct thread_array_cleanup *ta_cleanup = data; | |
1518 | ||
1519 | for (k = 0; k != ta_cleanup->count; k++) | |
1520 | ta_cleanup->tp_array[k]->refcount--; | |
1521 | } | |
1522 | ||
6208b47d | 1523 | struct cleanup * |
4f8d22e3 | 1524 | make_cleanup_restore_current_thread (void) |
6ecce94d | 1525 | { |
4f8d22e3 PA |
1526 | struct thread_info *tp; |
1527 | struct frame_info *frame; | |
8d749320 | 1528 | struct current_thread_cleanup *old = XNEW (struct current_thread_cleanup); |
4f8d22e3 | 1529 | |
39f77062 | 1530 | old->inferior_ptid = inferior_ptid; |
6c95b8df | 1531 | old->inf_id = current_inferior ()->num; |
9addecb9 | 1532 | old->was_removable = current_inferior ()->removable; |
4f8d22e3 | 1533 | |
e1316e60 PA |
1534 | old->next = current_thread_cleanup_chain; |
1535 | current_thread_cleanup_chain = old; | |
1536 | ||
d729566a PA |
1537 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1538 | { | |
1539 | old->was_stopped = is_stopped (inferior_ptid); | |
1540 | if (old->was_stopped | |
1541 | && target_has_registers | |
1542 | && target_has_stack | |
1543 | && target_has_memory) | |
eb8c0621 TT |
1544 | { |
1545 | /* When processing internal events, there might not be a | |
1546 | selected frame. If we naively call get_selected_frame | |
1547 | here, then we can end up reading debuginfo for the | |
1548 | current frame, but we don't generally need the debuginfo | |
1549 | at this point. */ | |
1550 | frame = get_selected_frame_if_set (); | |
1551 | } | |
d729566a PA |
1552 | else |
1553 | frame = NULL; | |
4f8d22e3 | 1554 | |
d729566a PA |
1555 | old->selected_frame_id = get_frame_id (frame); |
1556 | old->selected_frame_level = frame_relative_level (frame); | |
1557 | ||
e09875d4 | 1558 | tp = find_thread_ptid (inferior_ptid); |
d729566a PA |
1559 | if (tp) |
1560 | tp->refcount++; | |
1561 | } | |
4f8d22e3 | 1562 | |
9addecb9 TT |
1563 | current_inferior ()->removable = 0; |
1564 | ||
4f8d22e3 PA |
1565 | return make_cleanup_dtor (do_restore_current_thread_cleanup, old, |
1566 | restore_current_thread_cleanup_dtor); | |
6ecce94d AC |
1567 | } |
1568 | ||
253828f1 JK |
1569 | /* If non-zero tp_array_compar should sort in ascending order, otherwise in |
1570 | descending order. */ | |
1571 | ||
1572 | static int tp_array_compar_ascending; | |
1573 | ||
1574 | /* Sort an array for struct thread_info pointers by their NUM, order is | |
1575 | determined by TP_ARRAY_COMPAR_ASCENDING. */ | |
1576 | ||
1577 | static int | |
1578 | tp_array_compar (const void *ap_voidp, const void *bp_voidp) | |
1579 | { | |
1580 | const struct thread_info *const *ap = ap_voidp; | |
1581 | const struct thread_info *const *bp = bp_voidp; | |
1582 | ||
1583 | return ((((*ap)->num > (*bp)->num) - ((*ap)->num < (*bp)->num)) | |
1584 | * (tp_array_compar_ascending ? +1 : -1)); | |
1585 | } | |
1586 | ||
c906108c SS |
1587 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
1588 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist | |
1589 | of two numbers seperated by a hyphen. Examples: | |
1590 | ||
c5aa993b JM |
1591 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
1592 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
c378eb4e | 1593 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads. */ |
c906108c SS |
1594 | |
1595 | static void | |
fba45db2 | 1596 | thread_apply_all_command (char *cmd, int from_tty) |
c906108c | 1597 | { |
4f8d22e3 | 1598 | struct cleanup *old_chain; |
e35ce267 | 1599 | char *saved_cmd; |
054e8d9e AA |
1600 | int tc; |
1601 | struct thread_array_cleanup ta_cleanup; | |
c906108c | 1602 | |
253828f1 JK |
1603 | tp_array_compar_ascending = 0; |
1604 | if (cmd != NULL | |
1605 | && check_for_argument (&cmd, "-ascending", strlen ("-ascending"))) | |
1606 | { | |
1607 | cmd = skip_spaces (cmd); | |
1608 | tp_array_compar_ascending = 1; | |
1609 | } | |
1610 | ||
c906108c | 1611 | if (cmd == NULL || *cmd == '\000') |
8a3fe4f8 | 1612 | error (_("Please specify a command following the thread ID list")); |
94cc34af | 1613 | |
dc146f7c | 1614 | update_thread_list (); |
e9d196c5 | 1615 | |
4f8d22e3 PA |
1616 | old_chain = make_cleanup_restore_current_thread (); |
1617 | ||
e35ce267 | 1618 | /* Save a copy of the command in case it is clobbered by |
c378eb4e | 1619 | execute_command. */ |
5b616ba1 | 1620 | saved_cmd = xstrdup (cmd); |
94cc34af | 1621 | make_cleanup (xfree, saved_cmd); |
94cc34af | 1622 | |
a25d8bf9 PA |
1623 | /* Note this includes exited threads. */ |
1624 | tc = thread_count (); | |
1625 | if (tc != 0) | |
054e8d9e AA |
1626 | { |
1627 | struct thread_info **tp_array; | |
1628 | struct thread_info *tp; | |
1629 | int i = 0, k; | |
1630 | ||
1631 | /* Save a copy of the thread_list in case we execute detach | |
1632 | command. */ | |
8d749320 | 1633 | tp_array = XNEWVEC (struct thread_info *, tc); |
054e8d9e | 1634 | make_cleanup (xfree, tp_array); |
054e8d9e | 1635 | |
034f788c | 1636 | ALL_NON_EXITED_THREADS (tp) |
054e8d9e AA |
1637 | { |
1638 | tp_array[i] = tp; | |
1639 | tp->refcount++; | |
1640 | i++; | |
1641 | } | |
a25d8bf9 PA |
1642 | /* Because we skipped exited threads, we may end up with fewer |
1643 | threads in the array than the total count of threads. */ | |
1644 | gdb_assert (i <= tc); | |
054e8d9e | 1645 | |
a25d8bf9 PA |
1646 | if (i != 0) |
1647 | qsort (tp_array, i, sizeof (*tp_array), tp_array_compar); | |
253828f1 | 1648 | |
a25d8bf9 PA |
1649 | ta_cleanup.tp_array = tp_array; |
1650 | ta_cleanup.count = i; | |
054e8d9e AA |
1651 | make_cleanup (set_thread_refcount, &ta_cleanup); |
1652 | ||
1653 | for (k = 0; k != i; k++) | |
1654 | if (thread_alive (tp_array[k])) | |
1655 | { | |
1656 | switch_to_thread (tp_array[k]->ptid); | |
1657 | printf_filtered (_("\nThread %d (%s):\n"), | |
1658 | tp_array[k]->num, | |
1659 | target_pid_to_str (inferior_ptid)); | |
1660 | execute_command (cmd, from_tty); | |
1661 | ||
1662 | /* Restore exact command used previously. */ | |
1663 | strcpy (cmd, saved_cmd); | |
1664 | } | |
1665 | } | |
6ecce94d AC |
1666 | |
1667 | do_cleanups (old_chain); | |
c906108c SS |
1668 | } |
1669 | ||
1670 | static void | |
fba45db2 | 1671 | thread_apply_command (char *tidlist, int from_tty) |
c906108c SS |
1672 | { |
1673 | char *cmd; | |
c906108c | 1674 | struct cleanup *old_chain; |
e35ce267 | 1675 | char *saved_cmd; |
197f0a60 | 1676 | struct get_number_or_range_state state; |
c906108c SS |
1677 | |
1678 | if (tidlist == NULL || *tidlist == '\000') | |
8a3fe4f8 | 1679 | error (_("Please specify a thread ID list")); |
c906108c | 1680 | |
c5aa993b | 1681 | for (cmd = tidlist; *cmd != '\000' && !isalpha (*cmd); cmd++); |
c906108c SS |
1682 | |
1683 | if (*cmd == '\000') | |
8a3fe4f8 | 1684 | error (_("Please specify a command following the thread ID list")); |
c906108c | 1685 | |
e35ce267 | 1686 | /* Save a copy of the command in case it is clobbered by |
c378eb4e | 1687 | execute_command. */ |
5b616ba1 | 1688 | saved_cmd = xstrdup (cmd); |
4f8d22e3 | 1689 | old_chain = make_cleanup (xfree, saved_cmd); |
197f0a60 TT |
1690 | |
1691 | init_number_or_range (&state, tidlist); | |
1692 | while (!state.finished && state.string < cmd) | |
c906108c SS |
1693 | { |
1694 | struct thread_info *tp; | |
65ebfb52 | 1695 | int start; |
c906108c | 1696 | |
197f0a60 | 1697 | start = get_number_or_range (&state); |
c906108c | 1698 | |
65fc9b77 PA |
1699 | make_cleanup_restore_current_thread (); |
1700 | ||
65ebfb52 | 1701 | tp = find_thread_id (start); |
c906108c | 1702 | |
65ebfb52 MS |
1703 | if (!tp) |
1704 | warning (_("Unknown thread %d."), start); | |
1705 | else if (!thread_alive (tp)) | |
1706 | warning (_("Thread %d has terminated."), start); | |
1707 | else | |
1708 | { | |
1709 | switch_to_thread (tp->ptid); | |
4f8d22e3 | 1710 | |
65ebfb52 MS |
1711 | printf_filtered (_("\nThread %d (%s):\n"), tp->num, |
1712 | target_pid_to_str (inferior_ptid)); | |
1713 | execute_command (cmd, from_tty); | |
4f8d22e3 | 1714 | |
65ebfb52 MS |
1715 | /* Restore exact command used previously. */ |
1716 | strcpy (cmd, saved_cmd); | |
c906108c SS |
1717 | } |
1718 | } | |
6ecce94d AC |
1719 | |
1720 | do_cleanups (old_chain); | |
c906108c SS |
1721 | } |
1722 | ||
1723 | /* Switch to the specified thread. Will dispatch off to thread_apply_command | |
1724 | if prefix of arg is `apply'. */ | |
1725 | ||
f0e8c4c5 | 1726 | void |
fba45db2 | 1727 | thread_command (char *tidstr, int from_tty) |
c906108c | 1728 | { |
c906108c SS |
1729 | if (!tidstr) |
1730 | { | |
d729566a PA |
1731 | if (ptid_equal (inferior_ptid, null_ptid)) |
1732 | error (_("No thread selected")); | |
1733 | ||
c906108c | 1734 | if (target_has_stack) |
4f8d22e3 PA |
1735 | { |
1736 | if (is_exited (inferior_ptid)) | |
1737 | printf_filtered (_("[Current thread is %d (%s) (exited)]\n"), | |
1738 | pid_to_thread_id (inferior_ptid), | |
54ba13f7 | 1739 | target_pid_to_str (inferior_ptid)); |
4f8d22e3 PA |
1740 | else |
1741 | printf_filtered (_("[Current thread is %d (%s)]\n"), | |
1742 | pid_to_thread_id (inferior_ptid), | |
54ba13f7 | 1743 | target_pid_to_str (inferior_ptid)); |
4f8d22e3 | 1744 | } |
c906108c | 1745 | else |
8a3fe4f8 | 1746 | error (_("No stack.")); |
c906108c SS |
1747 | return; |
1748 | } | |
c5394b80 | 1749 | |
79a45e25 | 1750 | gdb_thread_select (current_uiout, tidstr, NULL); |
c5394b80 JM |
1751 | } |
1752 | ||
4694da01 TT |
1753 | /* Implementation of `thread name'. */ |
1754 | ||
1755 | static void | |
1756 | thread_name_command (char *arg, int from_tty) | |
1757 | { | |
1758 | struct thread_info *info; | |
1759 | ||
1760 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1761 | error (_("No thread selected")); | |
1762 | ||
529480d0 | 1763 | arg = skip_spaces (arg); |
4694da01 TT |
1764 | |
1765 | info = inferior_thread (); | |
1766 | xfree (info->name); | |
1767 | info->name = arg ? xstrdup (arg) : NULL; | |
1768 | } | |
1769 | ||
60f98dde MS |
1770 | /* Find thread ids with a name, target pid, or extra info matching ARG. */ |
1771 | ||
1772 | static void | |
1773 | thread_find_command (char *arg, int from_tty) | |
1774 | { | |
1775 | struct thread_info *tp; | |
1776 | char *tmp; | |
1777 | unsigned long match = 0; | |
1778 | ||
1779 | if (arg == NULL || *arg == '\0') | |
1780 | error (_("Command requires an argument.")); | |
1781 | ||
1782 | tmp = re_comp (arg); | |
1783 | if (tmp != 0) | |
1784 | error (_("Invalid regexp (%s): %s"), tmp, arg); | |
1785 | ||
1786 | update_thread_list (); | |
1787 | for (tp = thread_list; tp; tp = tp->next) | |
1788 | { | |
1789 | if (tp->name != NULL && re_exec (tp->name)) | |
1790 | { | |
1791 | printf_filtered (_("Thread %d has name '%s'\n"), | |
1792 | tp->num, tp->name); | |
1793 | match++; | |
1794 | } | |
1795 | ||
1796 | tmp = target_thread_name (tp); | |
1797 | if (tmp != NULL && re_exec (tmp)) | |
1798 | { | |
1799 | printf_filtered (_("Thread %d has target name '%s'\n"), | |
1800 | tp->num, tmp); | |
1801 | match++; | |
1802 | } | |
1803 | ||
1804 | tmp = target_pid_to_str (tp->ptid); | |
1805 | if (tmp != NULL && re_exec (tmp)) | |
1806 | { | |
1807 | printf_filtered (_("Thread %d has target id '%s'\n"), | |
1808 | tp->num, tmp); | |
1809 | match++; | |
1810 | } | |
1811 | ||
1812 | tmp = target_extra_thread_info (tp); | |
1813 | if (tmp != NULL && re_exec (tmp)) | |
1814 | { | |
1815 | printf_filtered (_("Thread %d has extra info '%s'\n"), | |
1816 | tp->num, tmp); | |
1817 | match++; | |
1818 | } | |
1819 | } | |
1820 | if (!match) | |
1821 | printf_filtered (_("No threads match '%s'\n"), arg); | |
1822 | } | |
1823 | ||
93815fbf VP |
1824 | /* Print notices when new threads are attached and detached. */ |
1825 | int print_thread_events = 1; | |
1826 | static void | |
1827 | show_print_thread_events (struct ui_file *file, int from_tty, | |
1828 | struct cmd_list_element *c, const char *value) | |
1829 | { | |
3e43a32a MS |
1830 | fprintf_filtered (file, |
1831 | _("Printing of thread events is %s.\n"), | |
93815fbf VP |
1832 | value); |
1833 | } | |
1834 | ||
c5394b80 | 1835 | static int |
6949171e | 1836 | do_captured_thread_select (struct ui_out *uiout, void *tidstr) |
c5394b80 JM |
1837 | { |
1838 | int num; | |
1839 | struct thread_info *tp; | |
1840 | ||
81490ea1 | 1841 | num = value_as_long (parse_and_eval (tidstr)); |
c906108c SS |
1842 | |
1843 | tp = find_thread_id (num); | |
1844 | ||
8b93c638 | 1845 | if (!tp) |
8a3fe4f8 | 1846 | error (_("Thread ID %d not known."), num); |
c906108c SS |
1847 | |
1848 | if (!thread_alive (tp)) | |
8a3fe4f8 | 1849 | error (_("Thread ID %d has terminated."), num); |
c906108c | 1850 | |
dcf4fbde | 1851 | switch_to_thread (tp->ptid); |
c906108c | 1852 | |
db5a7484 NR |
1853 | annotate_thread_changed (); |
1854 | ||
8b93c638 | 1855 | ui_out_text (uiout, "[Switching to thread "); |
39f77062 | 1856 | ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_ptid)); |
8b93c638 | 1857 | ui_out_text (uiout, " ("); |
54ba13f7 | 1858 | ui_out_text (uiout, target_pid_to_str (inferior_ptid)); |
8b93c638 | 1859 | ui_out_text (uiout, ")]"); |
c5394b80 | 1860 | |
4f8d22e3 PA |
1861 | /* Note that we can't reach this with an exited thread, due to the |
1862 | thread_alive check above. */ | |
30596231 | 1863 | if (tp->state == THREAD_RUNNING) |
94cc34af | 1864 | ui_out_text (uiout, "(running)\n"); |
4f8d22e3 | 1865 | else |
98871305 TT |
1866 | { |
1867 | ui_out_text (uiout, "\n"); | |
08d72866 | 1868 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
98871305 | 1869 | } |
4f8d22e3 PA |
1870 | |
1871 | /* Since the current thread may have changed, see if there is any | |
1872 | exited thread we can now delete. */ | |
1873 | prune_threads (); | |
94cc34af | 1874 | |
c5394b80 JM |
1875 | return GDB_RC_OK; |
1876 | } | |
1877 | ||
1878 | enum gdb_rc | |
ce43223b | 1879 | gdb_thread_select (struct ui_out *uiout, char *tidstr, char **error_message) |
c5394b80 | 1880 | { |
b0b13bb4 DJ |
1881 | if (catch_exceptions_with_msg (uiout, do_captured_thread_select, tidstr, |
1882 | error_message, RETURN_MASK_ALL) < 0) | |
1883 | return GDB_RC_FAIL; | |
1884 | return GDB_RC_OK; | |
c906108c SS |
1885 | } |
1886 | ||
b57bacec PA |
1887 | /* Update the 'threads_executing' global based on the threads we know |
1888 | about right now. */ | |
1889 | ||
1890 | static void | |
1891 | update_threads_executing (void) | |
1892 | { | |
1893 | struct thread_info *tp; | |
1894 | ||
1895 | threads_executing = 0; | |
1896 | ALL_NON_EXITED_THREADS (tp) | |
1897 | { | |
1898 | if (tp->executing) | |
1899 | { | |
1900 | threads_executing = 1; | |
1901 | break; | |
1902 | } | |
1903 | } | |
1904 | } | |
1905 | ||
dc146f7c VP |
1906 | void |
1907 | update_thread_list (void) | |
1908 | { | |
e8032dde | 1909 | target_update_thread_list (); |
b57bacec | 1910 | update_threads_executing (); |
dc146f7c VP |
1911 | } |
1912 | ||
6aed2dbc SS |
1913 | /* Return a new value for the selected thread's id. Return a value of 0 if |
1914 | no thread is selected, or no threads exist. */ | |
1915 | ||
1916 | static struct value * | |
22d2b532 SDJ |
1917 | thread_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, |
1918 | void *ignore) | |
6aed2dbc SS |
1919 | { |
1920 | struct thread_info *tp = find_thread_ptid (inferior_ptid); | |
1921 | ||
1922 | return value_from_longest (builtin_type (gdbarch)->builtin_int, | |
1923 | (tp ? tp->num : 0)); | |
1924 | } | |
1925 | ||
c906108c SS |
1926 | /* Commands with a prefix of `thread'. */ |
1927 | struct cmd_list_element *thread_cmd_list = NULL; | |
1928 | ||
22d2b532 SDJ |
1929 | /* Implementation of `thread' variable. */ |
1930 | ||
1931 | static const struct internalvar_funcs thread_funcs = | |
1932 | { | |
1933 | thread_id_make_value, | |
1934 | NULL, | |
1935 | NULL | |
1936 | }; | |
1937 | ||
c906108c | 1938 | void |
fba45db2 | 1939 | _initialize_thread (void) |
c906108c SS |
1940 | { |
1941 | static struct cmd_list_element *thread_apply_list = NULL; | |
c906108c | 1942 | |
60f98dde MS |
1943 | add_info ("threads", info_threads_command, |
1944 | _("Display currently known threads.\n\ | |
1945 | Usage: info threads [ID]...\n\ | |
1946 | Optional arguments are thread IDs with spaces between.\n\ | |
1947 | If no arguments, all threads are displayed.")); | |
c906108c | 1948 | |
d729566a | 1949 | add_prefix_cmd ("thread", class_run, thread_command, _("\ |
1bedd215 AC |
1950 | Use this command to switch between threads.\n\ |
1951 | The new thread ID must be currently known."), | |
d729566a | 1952 | &thread_cmd_list, "thread ", 1, &cmdlist); |
c906108c | 1953 | |
d729566a PA |
1954 | add_prefix_cmd ("apply", class_run, thread_apply_command, |
1955 | _("Apply a command to a list of threads."), | |
1956 | &thread_apply_list, "thread apply ", 1, &thread_cmd_list); | |
c906108c | 1957 | |
d729566a | 1958 | add_cmd ("all", class_run, thread_apply_all_command, |
253828f1 JK |
1959 | _("\ |
1960 | Apply a command to all threads.\n\ | |
1961 | \n\ | |
1962 | Usage: thread apply all [-ascending] <command>\n\ | |
1963 | -ascending: Call <command> for all threads in ascending order.\n\ | |
1964 | The default is descending order.\ | |
1965 | "), | |
1966 | &thread_apply_list); | |
c906108c | 1967 | |
4694da01 TT |
1968 | add_cmd ("name", class_run, thread_name_command, |
1969 | _("Set the current thread's name.\n\ | |
1970 | Usage: thread name [NAME]\n\ | |
1971 | If NAME is not given, then any existing name is removed."), &thread_cmd_list); | |
1972 | ||
60f98dde MS |
1973 | add_cmd ("find", class_run, thread_find_command, _("\ |
1974 | Find threads that match a regular expression.\n\ | |
1975 | Usage: thread find REGEXP\n\ | |
1976 | Will display thread ids whose name, target ID, or extra info matches REGEXP."), | |
1977 | &thread_cmd_list); | |
1978 | ||
4f45d445 | 1979 | add_com_alias ("t", "thread", class_run, 1); |
93815fbf VP |
1980 | |
1981 | add_setshow_boolean_cmd ("thread-events", no_class, | |
1982 | &print_thread_events, _("\ | |
11c68c47 EZ |
1983 | Set printing of thread events (such as thread start and exit)."), _("\ |
1984 | Show printing of thread events (such as thread start and exit)."), NULL, | |
93815fbf VP |
1985 | NULL, |
1986 | show_print_thread_events, | |
1987 | &setprintlist, &showprintlist); | |
6aed2dbc | 1988 | |
22d2b532 | 1989 | create_internalvar_type_lazy ("_thread", &thread_funcs, NULL); |
e1316e60 PA |
1990 | |
1991 | observer_attach_thread_ptid_changed (restore_current_thread_ptid_changed); | |
c906108c | 1992 | } |