Commit | Line | Data |
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c906108c | 1 | /* Multi-process/thread control for GDB, the GNU debugger. |
8926118c | 2 | |
618f726f | 3 | Copyright (C) 1986-2016 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" |
243a9253 | 45 | #include "thread-fsm.h" |
5d5658a1 | 46 | #include "tid-parse.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 | { | |
8980e177 | 169 | thread_fsm_clean_up (thr->thread_fsm, thr); |
243a9253 PA |
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 | |
5d5658a1 | 186 | delete_longjmp_breakpoint_at_next_stop (tp->global_num); |
f59f708a | 187 | |
16c381f0 | 188 | bpstat_clear (&tp->control.stop_bpstat); |
95e54da7 | 189 | |
02d27625 MM |
190 | btrace_teardown (tp); |
191 | ||
243a9253 | 192 | thread_cancel_execution_command (tp); |
4f8d22e3 PA |
193 | } |
194 | ||
195 | static void | |
196 | free_thread (struct thread_info *tp) | |
197 | { | |
fe978cb0 | 198 | if (tp->priv) |
dc146f7c VP |
199 | { |
200 | if (tp->private_dtor) | |
fe978cb0 | 201 | tp->private_dtor (tp->priv); |
dc146f7c | 202 | else |
fe978cb0 | 203 | xfree (tp->priv); |
dc146f7c | 204 | } |
7c952b6d | 205 | |
4694da01 | 206 | xfree (tp->name); |
b8c9b27d | 207 | xfree (tp); |
7c952b6d ND |
208 | } |
209 | ||
c906108c | 210 | void |
fba45db2 | 211 | init_thread_list (void) |
c906108c SS |
212 | { |
213 | struct thread_info *tp, *tpnext; | |
214 | ||
7c952b6d | 215 | highest_thread_num = 0; |
8ea051c5 | 216 | |
c906108c SS |
217 | if (!thread_list) |
218 | return; | |
219 | ||
220 | for (tp = thread_list; tp; tp = tpnext) | |
221 | { | |
222 | tpnext = tp->next; | |
7c952b6d | 223 | free_thread (tp); |
c906108c SS |
224 | } |
225 | ||
226 | thread_list = NULL; | |
b57bacec | 227 | threads_executing = 0; |
c906108c SS |
228 | } |
229 | ||
5d5658a1 PA |
230 | /* Allocate a new thread of inferior INF with target id PTID and add |
231 | it to the thread list. */ | |
e58b0e63 PA |
232 | |
233 | static struct thread_info * | |
5d5658a1 | 234 | new_thread (struct inferior *inf, ptid_t ptid) |
e58b0e63 | 235 | { |
5d5658a1 PA |
236 | struct thread_info *tp; |
237 | ||
238 | gdb_assert (inf != NULL); | |
239 | ||
240 | tp = XCNEW (struct thread_info); | |
e58b0e63 PA |
241 | |
242 | tp->ptid = ptid; | |
5d5658a1 PA |
243 | tp->global_num = ++highest_thread_num; |
244 | tp->inf = inf; | |
245 | tp->per_inf_num = ++inf->highest_thread_num; | |
b05b1202 PA |
246 | |
247 | if (thread_list == NULL) | |
248 | thread_list = tp; | |
249 | else | |
250 | { | |
251 | struct thread_info *last; | |
252 | ||
253 | for (last = thread_list; last->next != NULL; last = last->next) | |
254 | ; | |
255 | last->next = tp; | |
256 | } | |
e58b0e63 PA |
257 | |
258 | /* Nothing to follow yet. */ | |
259 | tp->pending_follow.kind = TARGET_WAITKIND_SPURIOUS; | |
30596231 | 260 | tp->state = THREAD_STOPPED; |
372316f1 | 261 | tp->suspend.waitstatus.kind = TARGET_WAITKIND_IGNORE; |
e58b0e63 PA |
262 | |
263 | return tp; | |
264 | } | |
265 | ||
0d06e24b | 266 | struct thread_info * |
93815fbf | 267 | add_thread_silent (ptid_t ptid) |
c906108c SS |
268 | { |
269 | struct thread_info *tp; | |
5d5658a1 PA |
270 | struct inferior *inf = find_inferior_ptid (ptid); |
271 | gdb_assert (inf != NULL); | |
c906108c | 272 | |
e09875d4 | 273 | tp = find_thread_ptid (ptid); |
4f8d22e3 PA |
274 | if (tp) |
275 | /* Found an old thread with the same id. It has to be dead, | |
276 | otherwise we wouldn't be adding a new thread with the same id. | |
277 | The OS is reusing this id --- delete it, and recreate a new | |
278 | one. */ | |
279 | { | |
280 | /* In addition to deleting the thread, if this is the current | |
dcf4fbde PA |
281 | thread, then we need to take care that delete_thread doesn't |
282 | really delete the thread if it is inferior_ptid. Create a | |
283 | new template thread in the list with an invalid ptid, switch | |
284 | to it, delete the original thread, reset the new thread's | |
285 | ptid, and switch to it. */ | |
4f8d22e3 PA |
286 | |
287 | if (ptid_equal (inferior_ptid, ptid)) | |
288 | { | |
5d5658a1 | 289 | tp = new_thread (inf, null_ptid); |
dcf4fbde PA |
290 | |
291 | /* Make switch_to_thread not read from the thread. */ | |
30596231 | 292 | tp->state = THREAD_EXITED; |
c820c52a | 293 | switch_to_thread (null_ptid); |
4f8d22e3 PA |
294 | |
295 | /* Now we can delete it. */ | |
296 | delete_thread (ptid); | |
297 | ||
dcf4fbde | 298 | /* Now reset its ptid, and reswitch inferior_ptid to it. */ |
4f8d22e3 | 299 | tp->ptid = ptid; |
30596231 | 300 | tp->state = THREAD_STOPPED; |
4f8d22e3 PA |
301 | switch_to_thread (ptid); |
302 | ||
303 | observer_notify_new_thread (tp); | |
304 | ||
305 | /* All done. */ | |
306 | return tp; | |
307 | } | |
308 | else | |
309 | /* Just go ahead and delete it. */ | |
310 | delete_thread (ptid); | |
311 | } | |
312 | ||
5d5658a1 | 313 | tp = new_thread (inf, ptid); |
cfc01461 VP |
314 | observer_notify_new_thread (tp); |
315 | ||
0d06e24b | 316 | return tp; |
c906108c SS |
317 | } |
318 | ||
93815fbf | 319 | struct thread_info * |
fe978cb0 | 320 | add_thread_with_info (ptid_t ptid, struct private_thread_info *priv) |
93815fbf VP |
321 | { |
322 | struct thread_info *result = add_thread_silent (ptid); | |
323 | ||
fe978cb0 | 324 | result->priv = priv; |
17faa917 | 325 | |
93815fbf | 326 | if (print_thread_events) |
fd532e2e | 327 | printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid)); |
d4fc5b1e NR |
328 | |
329 | annotate_new_thread (); | |
93815fbf VP |
330 | return result; |
331 | } | |
332 | ||
17faa917 DJ |
333 | struct thread_info * |
334 | add_thread (ptid_t ptid) | |
335 | { | |
336 | return add_thread_with_info (ptid, NULL); | |
337 | } | |
338 | ||
c2829269 PA |
339 | /* Add TP to the end of the step-over chain LIST_P. */ |
340 | ||
341 | static void | |
342 | step_over_chain_enqueue (struct thread_info **list_p, struct thread_info *tp) | |
343 | { | |
344 | gdb_assert (tp->step_over_next == NULL); | |
345 | gdb_assert (tp->step_over_prev == NULL); | |
346 | ||
347 | if (*list_p == NULL) | |
348 | { | |
349 | *list_p = tp; | |
350 | tp->step_over_prev = tp->step_over_next = tp; | |
351 | } | |
352 | else | |
353 | { | |
354 | struct thread_info *head = *list_p; | |
355 | struct thread_info *tail = head->step_over_prev; | |
356 | ||
357 | tp->step_over_prev = tail; | |
358 | tp->step_over_next = head; | |
359 | head->step_over_prev = tp; | |
360 | tail->step_over_next = tp; | |
361 | } | |
362 | } | |
363 | ||
364 | /* Remove TP from step-over chain LIST_P. */ | |
365 | ||
366 | static void | |
367 | step_over_chain_remove (struct thread_info **list_p, struct thread_info *tp) | |
368 | { | |
369 | gdb_assert (tp->step_over_next != NULL); | |
370 | gdb_assert (tp->step_over_prev != NULL); | |
371 | ||
372 | if (*list_p == tp) | |
373 | { | |
374 | if (tp == tp->step_over_next) | |
375 | *list_p = NULL; | |
376 | else | |
377 | *list_p = tp->step_over_next; | |
378 | } | |
379 | ||
380 | tp->step_over_prev->step_over_next = tp->step_over_next; | |
381 | tp->step_over_next->step_over_prev = tp->step_over_prev; | |
382 | tp->step_over_prev = tp->step_over_next = NULL; | |
383 | } | |
384 | ||
385 | /* See gdbthread.h. */ | |
386 | ||
387 | struct thread_info * | |
388 | thread_step_over_chain_next (struct thread_info *tp) | |
389 | { | |
390 | struct thread_info *next = tp->step_over_next; | |
391 | ||
392 | return (next == step_over_queue_head ? NULL : next); | |
393 | } | |
394 | ||
395 | /* See gdbthread.h. */ | |
396 | ||
397 | int | |
398 | thread_is_in_step_over_chain (struct thread_info *tp) | |
399 | { | |
400 | return (tp->step_over_next != NULL); | |
401 | } | |
402 | ||
403 | /* See gdbthread.h. */ | |
404 | ||
405 | void | |
406 | thread_step_over_chain_enqueue (struct thread_info *tp) | |
407 | { | |
408 | step_over_chain_enqueue (&step_over_queue_head, tp); | |
409 | } | |
410 | ||
411 | /* See gdbthread.h. */ | |
412 | ||
413 | void | |
414 | thread_step_over_chain_remove (struct thread_info *tp) | |
415 | { | |
416 | step_over_chain_remove (&step_over_queue_head, tp); | |
417 | } | |
418 | ||
5e0b29c1 PA |
419 | /* Delete thread PTID. If SILENT, don't notify the observer of this |
420 | exit. */ | |
421 | static void | |
422 | delete_thread_1 (ptid_t ptid, int silent) | |
c906108c SS |
423 | { |
424 | struct thread_info *tp, *tpprev; | |
425 | ||
426 | tpprev = NULL; | |
427 | ||
428 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) | |
39f77062 | 429 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
430 | break; |
431 | ||
432 | if (!tp) | |
433 | return; | |
434 | ||
c2829269 PA |
435 | /* Dead threads don't need to step-over. Remove from queue. */ |
436 | if (tp->step_over_next != NULL) | |
437 | thread_step_over_chain_remove (tp); | |
438 | ||
4f8d22e3 PA |
439 | /* If this is the current thread, or there's code out there that |
440 | relies on it existing (refcount > 0) we can't delete yet. Mark | |
441 | it as exited, and notify it. */ | |
442 | if (tp->refcount > 0 | |
443 | || ptid_equal (tp->ptid, inferior_ptid)) | |
444 | { | |
30596231 | 445 | if (tp->state != THREAD_EXITED) |
4f8d22e3 | 446 | { |
a07daef3 | 447 | observer_notify_thread_exit (tp, silent); |
4f8d22e3 PA |
448 | |
449 | /* Tag it as exited. */ | |
30596231 | 450 | tp->state = THREAD_EXITED; |
4f8d22e3 PA |
451 | |
452 | /* Clear breakpoints, etc. associated with this thread. */ | |
453 | clear_thread_inferior_resources (tp); | |
454 | } | |
455 | ||
456 | /* Will be really deleted some other time. */ | |
457 | return; | |
458 | } | |
459 | ||
fa4cd53f | 460 | /* Notify thread exit, but only if we haven't already. */ |
30596231 | 461 | if (tp->state != THREAD_EXITED) |
fa4cd53f PA |
462 | observer_notify_thread_exit (tp, silent); |
463 | ||
464 | /* Tag it as exited. */ | |
30596231 | 465 | tp->state = THREAD_EXITED; |
fa4cd53f PA |
466 | clear_thread_inferior_resources (tp); |
467 | ||
c906108c SS |
468 | if (tpprev) |
469 | tpprev->next = tp->next; | |
470 | else | |
471 | thread_list = tp->next; | |
472 | ||
7c952b6d | 473 | free_thread (tp); |
c906108c SS |
474 | } |
475 | ||
4f8d22e3 PA |
476 | /* Delete thread PTID and notify of thread exit. If this is |
477 | inferior_ptid, don't actually delete it, but tag it as exited and | |
478 | do the notification. If PTID is the user selected thread, clear | |
479 | it. */ | |
5e0b29c1 PA |
480 | void |
481 | delete_thread (ptid_t ptid) | |
482 | { | |
483 | delete_thread_1 (ptid, 0 /* not silent */); | |
484 | } | |
485 | ||
486 | void | |
487 | delete_thread_silent (ptid_t ptid) | |
488 | { | |
489 | delete_thread_1 (ptid, 1 /* silent */); | |
490 | } | |
491 | ||
1e92afda | 492 | struct thread_info * |
5d5658a1 | 493 | find_thread_global_id (int global_id) |
c906108c SS |
494 | { |
495 | struct thread_info *tp; | |
496 | ||
497 | for (tp = thread_list; tp; tp = tp->next) | |
5d5658a1 PA |
498 | if (tp->global_num == global_id) |
499 | return tp; | |
500 | ||
501 | return NULL; | |
502 | } | |
503 | ||
504 | static struct thread_info * | |
505 | find_thread_id (struct inferior *inf, int thr_num) | |
506 | { | |
507 | struct thread_info *tp; | |
508 | ||
509 | for (tp = thread_list; tp; tp = tp->next) | |
510 | if (tp->inf == inf && tp->per_inf_num == thr_num) | |
c906108c SS |
511 | return tp; |
512 | ||
513 | return NULL; | |
514 | } | |
515 | ||
39f77062 | 516 | /* Find a thread_info by matching PTID. */ |
0d06e24b | 517 | struct thread_info * |
e09875d4 | 518 | find_thread_ptid (ptid_t ptid) |
0d06e24b JM |
519 | { |
520 | struct thread_info *tp; | |
521 | ||
522 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 523 | if (ptid_equal (tp->ptid, ptid)) |
0d06e24b JM |
524 | return tp; |
525 | ||
526 | return NULL; | |
527 | } | |
528 | ||
529 | /* | |
530 | * Thread iterator function. | |
531 | * | |
532 | * Calls a callback function once for each thread, so long as | |
533 | * the callback function returns false. If the callback function | |
534 | * returns true, the iteration will end and the current thread | |
535 | * will be returned. This can be useful for implementing a | |
536 | * search for a thread with arbitrary attributes, or for applying | |
537 | * some operation to every thread. | |
538 | * | |
539 | * FIXME: some of the existing functionality, such as | |
540 | * "Thread apply all", might be rewritten using this functionality. | |
541 | */ | |
542 | ||
543 | struct thread_info * | |
fd118b61 KB |
544 | iterate_over_threads (int (*callback) (struct thread_info *, void *), |
545 | void *data) | |
0d06e24b | 546 | { |
4f8d22e3 | 547 | struct thread_info *tp, *next; |
0d06e24b | 548 | |
4f8d22e3 PA |
549 | for (tp = thread_list; tp; tp = next) |
550 | { | |
551 | next = tp->next; | |
552 | if ((*callback) (tp, data)) | |
553 | return tp; | |
554 | } | |
0d06e24b JM |
555 | |
556 | return NULL; | |
557 | } | |
558 | ||
20874c92 VP |
559 | int |
560 | thread_count (void) | |
561 | { | |
562 | int result = 0; | |
563 | struct thread_info *tp; | |
564 | ||
565 | for (tp = thread_list; tp; tp = tp->next) | |
566 | ++result; | |
567 | ||
568 | return result; | |
569 | } | |
570 | ||
c906108c | 571 | int |
5d5658a1 | 572 | valid_global_thread_id (int global_id) |
c906108c SS |
573 | { |
574 | struct thread_info *tp; | |
575 | ||
576 | for (tp = thread_list; tp; tp = tp->next) | |
5d5658a1 | 577 | if (tp->global_num == global_id) |
c906108c SS |
578 | return 1; |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
583 | int | |
5d5658a1 | 584 | ptid_to_global_thread_id (ptid_t ptid) |
c906108c SS |
585 | { |
586 | struct thread_info *tp; | |
587 | ||
588 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 589 | if (ptid_equal (tp->ptid, ptid)) |
5d5658a1 | 590 | return tp->global_num; |
c906108c SS |
591 | |
592 | return 0; | |
593 | } | |
594 | ||
39f77062 | 595 | ptid_t |
5d5658a1 | 596 | global_thread_id_to_ptid (int global_id) |
c906108c | 597 | { |
5d5658a1 | 598 | struct thread_info *thread = find_thread_global_id (global_id); |
5d502164 | 599 | |
c906108c | 600 | if (thread) |
39f77062 | 601 | return thread->ptid; |
c906108c | 602 | else |
5d5658a1 | 603 | return minus_one_ptid; |
c906108c SS |
604 | } |
605 | ||
606 | int | |
39f77062 | 607 | in_thread_list (ptid_t ptid) |
c906108c SS |
608 | { |
609 | struct thread_info *tp; | |
610 | ||
611 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 612 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
613 | return 1; |
614 | ||
c378eb4e | 615 | return 0; /* Never heard of 'im. */ |
c906108c | 616 | } |
8926118c | 617 | |
bad34192 PA |
618 | /* Finds the first thread of the inferior given by PID. If PID is -1, |
619 | return the first thread in the list. */ | |
620 | ||
621 | struct thread_info * | |
622 | first_thread_of_process (int pid) | |
623 | { | |
624 | struct thread_info *tp, *ret = NULL; | |
625 | ||
626 | for (tp = thread_list; tp; tp = tp->next) | |
627 | if (pid == -1 || ptid_get_pid (tp->ptid) == pid) | |
5d5658a1 | 628 | if (ret == NULL || tp->global_num < ret->global_num) |
bad34192 PA |
629 | ret = tp; |
630 | ||
631 | return ret; | |
632 | } | |
633 | ||
2277426b PA |
634 | struct thread_info * |
635 | any_thread_of_process (int pid) | |
636 | { | |
637 | struct thread_info *tp; | |
638 | ||
32990ada PA |
639 | gdb_assert (pid != 0); |
640 | ||
641 | /* Prefer the current thread. */ | |
642 | if (ptid_get_pid (inferior_ptid) == pid) | |
643 | return inferior_thread (); | |
644 | ||
645 | ALL_NON_EXITED_THREADS (tp) | |
2277426b PA |
646 | if (ptid_get_pid (tp->ptid) == pid) |
647 | return tp; | |
648 | ||
649 | return NULL; | |
650 | } | |
651 | ||
6c95b8df PA |
652 | struct thread_info * |
653 | any_live_thread_of_process (int pid) | |
654 | { | |
32990ada | 655 | struct thread_info *curr_tp = NULL; |
6c95b8df | 656 | struct thread_info *tp; |
9941e0c5 | 657 | struct thread_info *tp_executing = NULL; |
6c95b8df | 658 | |
32990ada PA |
659 | gdb_assert (pid != 0); |
660 | ||
661 | /* Prefer the current thread if it's not executing. */ | |
662 | if (ptid_get_pid (inferior_ptid) == pid) | |
663 | { | |
664 | /* If the current thread is dead, forget it. If it's not | |
665 | executing, use it. Otherwise, still choose it (below), but | |
666 | only if no other non-executing thread is found. */ | |
667 | curr_tp = inferior_thread (); | |
668 | if (curr_tp->state == THREAD_EXITED) | |
669 | curr_tp = NULL; | |
670 | else if (!curr_tp->executing) | |
671 | return curr_tp; | |
672 | } | |
673 | ||
674 | ALL_NON_EXITED_THREADS (tp) | |
675 | if (ptid_get_pid (tp->ptid) == pid) | |
6c95b8df | 676 | { |
32990ada | 677 | if (!tp->executing) |
6c95b8df | 678 | return tp; |
32990ada PA |
679 | |
680 | tp_executing = tp; | |
6c95b8df PA |
681 | } |
682 | ||
32990ada PA |
683 | /* If both the current thread and all live threads are executing, |
684 | prefer the current thread. */ | |
685 | if (curr_tp != NULL) | |
686 | return curr_tp; | |
687 | ||
688 | /* Otherwise, just return an executing thread, if any. */ | |
9941e0c5 | 689 | return tp_executing; |
6c95b8df PA |
690 | } |
691 | ||
8b93c638 | 692 | /* Print a list of thread ids currently known, and the total number of |
c378eb4e | 693 | threads. To be used from within catch_errors. */ |
6949171e JJ |
694 | static int |
695 | do_captured_list_thread_ids (struct ui_out *uiout, void *arg) | |
8b93c638 JM |
696 | { |
697 | struct thread_info *tp; | |
698 | int num = 0; | |
3b31d625 | 699 | struct cleanup *cleanup_chain; |
592375cd | 700 | int current_thread = -1; |
8b93c638 | 701 | |
dc146f7c | 702 | update_thread_list (); |
7990a578 | 703 | |
3b31d625 | 704 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "thread-ids"); |
8b93c638 JM |
705 | |
706 | for (tp = thread_list; tp; tp = tp->next) | |
707 | { | |
30596231 | 708 | if (tp->state == THREAD_EXITED) |
4f8d22e3 | 709 | continue; |
592375cd VP |
710 | |
711 | if (ptid_equal (tp->ptid, inferior_ptid)) | |
5d5658a1 | 712 | current_thread = tp->global_num; |
592375cd | 713 | |
8b93c638 | 714 | num++; |
5d5658a1 | 715 | ui_out_field_int (uiout, "thread-id", tp->global_num); |
8b93c638 JM |
716 | } |
717 | ||
3b31d625 | 718 | do_cleanups (cleanup_chain); |
592375cd VP |
719 | |
720 | if (current_thread != -1) | |
721 | ui_out_field_int (uiout, "current-thread-id", current_thread); | |
8b93c638 JM |
722 | ui_out_field_int (uiout, "number-of-threads", num); |
723 | return GDB_RC_OK; | |
724 | } | |
725 | ||
726 | /* Official gdblib interface function to get a list of thread ids and | |
c378eb4e | 727 | the total number. */ |
8b93c638 | 728 | enum gdb_rc |
ce43223b | 729 | gdb_list_thread_ids (struct ui_out *uiout, char **error_message) |
8b93c638 | 730 | { |
b0b13bb4 DJ |
731 | if (catch_exceptions_with_msg (uiout, do_captured_list_thread_ids, NULL, |
732 | error_message, RETURN_MASK_ALL) < 0) | |
733 | return GDB_RC_FAIL; | |
734 | return GDB_RC_OK; | |
8b93c638 | 735 | } |
c906108c | 736 | |
c378eb4e | 737 | /* Return true if TP is an active thread. */ |
c906108c | 738 | static int |
fba45db2 | 739 | thread_alive (struct thread_info *tp) |
c906108c | 740 | { |
30596231 | 741 | if (tp->state == THREAD_EXITED) |
c906108c | 742 | return 0; |
39f77062 | 743 | if (!target_thread_alive (tp->ptid)) |
4f8d22e3 | 744 | return 0; |
c906108c SS |
745 | return 1; |
746 | } | |
747 | ||
e8032dde PA |
748 | /* See gdbthreads.h. */ |
749 | ||
750 | void | |
fba45db2 | 751 | prune_threads (void) |
c906108c | 752 | { |
8a06aea7 | 753 | struct thread_info *tp, *tmp; |
c906108c | 754 | |
8a06aea7 | 755 | ALL_THREADS_SAFE (tp, tmp) |
c906108c | 756 | { |
c906108c | 757 | if (!thread_alive (tp)) |
39f77062 | 758 | delete_thread (tp->ptid); |
c906108c SS |
759 | } |
760 | } | |
761 | ||
8a06aea7 PA |
762 | /* See gdbthreads.h. */ |
763 | ||
764 | void | |
765 | delete_exited_threads (void) | |
766 | { | |
767 | struct thread_info *tp, *tmp; | |
768 | ||
769 | ALL_THREADS_SAFE (tp, tmp) | |
770 | { | |
771 | if (tp->state == THREAD_EXITED) | |
772 | delete_thread (tp->ptid); | |
773 | } | |
774 | } | |
775 | ||
6c659fc2 SC |
776 | /* Disable storing stack temporaries for the thread whose id is |
777 | stored in DATA. */ | |
778 | ||
779 | static void | |
780 | disable_thread_stack_temporaries (void *data) | |
781 | { | |
19ba03f4 | 782 | ptid_t *pd = (ptid_t *) data; |
6c659fc2 SC |
783 | struct thread_info *tp = find_thread_ptid (*pd); |
784 | ||
785 | if (tp != NULL) | |
786 | { | |
787 | tp->stack_temporaries_enabled = 0; | |
788 | VEC_free (value_ptr, tp->stack_temporaries); | |
789 | } | |
790 | ||
791 | xfree (pd); | |
792 | } | |
793 | ||
794 | /* Enable storing stack temporaries for thread with id PTID and return a | |
795 | cleanup which can disable and clear the stack temporaries. */ | |
796 | ||
797 | struct cleanup * | |
798 | enable_thread_stack_temporaries (ptid_t ptid) | |
799 | { | |
800 | struct thread_info *tp = find_thread_ptid (ptid); | |
801 | ptid_t *data; | |
802 | struct cleanup *c; | |
803 | ||
804 | gdb_assert (tp != NULL); | |
805 | ||
806 | tp->stack_temporaries_enabled = 1; | |
807 | tp->stack_temporaries = NULL; | |
8d749320 | 808 | data = XNEW (ptid_t); |
6c659fc2 SC |
809 | *data = ptid; |
810 | c = make_cleanup (disable_thread_stack_temporaries, data); | |
811 | ||
812 | return c; | |
813 | } | |
814 | ||
815 | /* Return non-zero value if stack temporaies are enabled for the thread | |
816 | with id PTID. */ | |
817 | ||
818 | int | |
819 | thread_stack_temporaries_enabled_p (ptid_t ptid) | |
820 | { | |
821 | struct thread_info *tp = find_thread_ptid (ptid); | |
822 | ||
823 | if (tp == NULL) | |
824 | return 0; | |
825 | else | |
826 | return tp->stack_temporaries_enabled; | |
827 | } | |
828 | ||
829 | /* Push V on to the stack temporaries of the thread with id PTID. */ | |
830 | ||
831 | void | |
832 | push_thread_stack_temporary (ptid_t ptid, struct value *v) | |
833 | { | |
834 | struct thread_info *tp = find_thread_ptid (ptid); | |
835 | ||
836 | gdb_assert (tp != NULL && tp->stack_temporaries_enabled); | |
837 | VEC_safe_push (value_ptr, tp->stack_temporaries, v); | |
838 | } | |
839 | ||
840 | /* Return 1 if VAL is among the stack temporaries of the thread | |
841 | with id PTID. Return 0 otherwise. */ | |
842 | ||
843 | int | |
844 | value_in_thread_stack_temporaries (struct value *val, ptid_t ptid) | |
845 | { | |
846 | struct thread_info *tp = find_thread_ptid (ptid); | |
847 | ||
848 | gdb_assert (tp != NULL && tp->stack_temporaries_enabled); | |
849 | if (!VEC_empty (value_ptr, tp->stack_temporaries)) | |
850 | { | |
851 | struct value *v; | |
852 | int i; | |
853 | ||
854 | for (i = 0; VEC_iterate (value_ptr, tp->stack_temporaries, i, v); i++) | |
855 | if (v == val) | |
856 | return 1; | |
857 | } | |
858 | ||
859 | return 0; | |
860 | } | |
861 | ||
862 | /* Return the last of the stack temporaries for thread with id PTID. | |
863 | Return NULL if there are no stack temporaries for the thread. */ | |
864 | ||
865 | struct value * | |
866 | get_last_thread_stack_temporary (ptid_t ptid) | |
867 | { | |
868 | struct value *lastval = NULL; | |
869 | struct thread_info *tp = find_thread_ptid (ptid); | |
870 | ||
871 | gdb_assert (tp != NULL); | |
872 | if (!VEC_empty (value_ptr, tp->stack_temporaries)) | |
873 | lastval = VEC_last (value_ptr, tp->stack_temporaries); | |
874 | ||
875 | return lastval; | |
876 | } | |
877 | ||
5231c1fd PA |
878 | void |
879 | thread_change_ptid (ptid_t old_ptid, ptid_t new_ptid) | |
880 | { | |
82f73884 PA |
881 | struct inferior *inf; |
882 | struct thread_info *tp; | |
883 | ||
884 | /* It can happen that what we knew as the target inferior id | |
885 | changes. E.g, target remote may only discover the remote process | |
886 | pid after adding the inferior to GDB's list. */ | |
c9657e70 | 887 | inf = find_inferior_ptid (old_ptid); |
82f73884 PA |
888 | inf->pid = ptid_get_pid (new_ptid); |
889 | ||
e09875d4 | 890 | tp = find_thread_ptid (old_ptid); |
5231c1fd PA |
891 | tp->ptid = new_ptid; |
892 | ||
893 | observer_notify_thread_ptid_changed (old_ptid, new_ptid); | |
894 | } | |
895 | ||
372316f1 PA |
896 | /* See gdbthread.h. */ |
897 | ||
898 | void | |
899 | set_resumed (ptid_t ptid, int resumed) | |
900 | { | |
901 | struct thread_info *tp; | |
902 | int all = ptid_equal (ptid, minus_one_ptid); | |
903 | ||
904 | if (all || ptid_is_pid (ptid)) | |
905 | { | |
906 | for (tp = thread_list; tp; tp = tp->next) | |
907 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) | |
908 | tp->resumed = resumed; | |
909 | } | |
910 | else | |
911 | { | |
912 | tp = find_thread_ptid (ptid); | |
913 | gdb_assert (tp != NULL); | |
914 | tp->resumed = resumed; | |
915 | } | |
916 | } | |
917 | ||
4d9d9d04 PA |
918 | /* Helper for set_running, that marks one thread either running or |
919 | stopped. */ | |
920 | ||
921 | static int | |
922 | set_running_thread (struct thread_info *tp, int running) | |
923 | { | |
924 | int started = 0; | |
925 | ||
926 | if (running && tp->state == THREAD_STOPPED) | |
927 | started = 1; | |
928 | tp->state = running ? THREAD_RUNNING : THREAD_STOPPED; | |
929 | ||
930 | if (!running) | |
931 | { | |
932 | /* If the thread is now marked stopped, remove it from | |
933 | the step-over queue, so that we don't try to resume | |
934 | it until the user wants it to. */ | |
935 | if (tp->step_over_next != NULL) | |
936 | thread_step_over_chain_remove (tp); | |
937 | } | |
938 | ||
939 | return started; | |
940 | } | |
941 | ||
e1ac3328 VP |
942 | void |
943 | set_running (ptid_t ptid, int running) | |
944 | { | |
945 | struct thread_info *tp; | |
d90e17a7 | 946 | int all = ptid_equal (ptid, minus_one_ptid); |
4d9d9d04 | 947 | int any_started = 0; |
e1ac3328 | 948 | |
e1ac3328 VP |
949 | /* We try not to notify the observer if no thread has actually changed |
950 | the running state -- merely to reduce the number of messages to | |
951 | frontend. Frontend is supposed to handle multiple *running just fine. */ | |
d90e17a7 | 952 | if (all || ptid_is_pid (ptid)) |
e1ac3328 | 953 | { |
e1ac3328 | 954 | for (tp = thread_list; tp; tp = tp->next) |
d90e17a7 PA |
955 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) |
956 | { | |
30596231 | 957 | if (tp->state == THREAD_EXITED) |
d90e17a7 | 958 | continue; |
4d9d9d04 PA |
959 | |
960 | if (set_running_thread (tp, running)) | |
d90e17a7 | 961 | any_started = 1; |
d90e17a7 | 962 | } |
e1ac3328 VP |
963 | } |
964 | else | |
965 | { | |
e09875d4 | 966 | tp = find_thread_ptid (ptid); |
4d9d9d04 | 967 | gdb_assert (tp != NULL); |
30596231 | 968 | gdb_assert (tp->state != THREAD_EXITED); |
4d9d9d04 PA |
969 | if (set_running_thread (tp, running)) |
970 | any_started = 1; | |
4f8d22e3 | 971 | } |
4d9d9d04 PA |
972 | if (any_started) |
973 | observer_notify_target_resumed (ptid); | |
e1ac3328 VP |
974 | } |
975 | ||
4f8d22e3 PA |
976 | static int |
977 | is_thread_state (ptid_t ptid, enum thread_state state) | |
e1ac3328 VP |
978 | { |
979 | struct thread_info *tp; | |
980 | ||
e09875d4 | 981 | tp = find_thread_ptid (ptid); |
e1ac3328 | 982 | gdb_assert (tp); |
30596231 | 983 | return tp->state == state; |
4f8d22e3 PA |
984 | } |
985 | ||
986 | int | |
987 | is_stopped (ptid_t ptid) | |
988 | { | |
4f8d22e3 PA |
989 | return is_thread_state (ptid, THREAD_STOPPED); |
990 | } | |
991 | ||
992 | int | |
993 | is_exited (ptid_t ptid) | |
994 | { | |
4f8d22e3 PA |
995 | return is_thread_state (ptid, THREAD_EXITED); |
996 | } | |
997 | ||
998 | int | |
999 | is_running (ptid_t ptid) | |
1000 | { | |
4f8d22e3 | 1001 | return is_thread_state (ptid, THREAD_RUNNING); |
e1ac3328 VP |
1002 | } |
1003 | ||
8ea051c5 PA |
1004 | int |
1005 | is_executing (ptid_t ptid) | |
1006 | { | |
1007 | struct thread_info *tp; | |
1008 | ||
e09875d4 | 1009 | tp = find_thread_ptid (ptid); |
8ea051c5 | 1010 | gdb_assert (tp); |
30596231 | 1011 | return tp->executing; |
8ea051c5 PA |
1012 | } |
1013 | ||
1014 | void | |
1015 | set_executing (ptid_t ptid, int executing) | |
1016 | { | |
1017 | struct thread_info *tp; | |
d90e17a7 | 1018 | int all = ptid_equal (ptid, minus_one_ptid); |
8ea051c5 | 1019 | |
d90e17a7 | 1020 | if (all || ptid_is_pid (ptid)) |
8ea051c5 PA |
1021 | { |
1022 | for (tp = thread_list; tp; tp = tp->next) | |
d90e17a7 | 1023 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) |
30596231 | 1024 | tp->executing = executing; |
8ea051c5 PA |
1025 | } |
1026 | else | |
1027 | { | |
e09875d4 | 1028 | tp = find_thread_ptid (ptid); |
8ea051c5 | 1029 | gdb_assert (tp); |
30596231 | 1030 | tp->executing = executing; |
8ea051c5 | 1031 | } |
b57bacec PA |
1032 | |
1033 | /* It only takes one running thread to spawn more threads.*/ | |
1034 | if (executing) | |
1035 | threads_executing = 1; | |
1036 | /* Only clear the flag if the caller is telling us everything is | |
1037 | stopped. */ | |
1038 | else if (ptid_equal (minus_one_ptid, ptid)) | |
1039 | threads_executing = 0; | |
1040 | } | |
1041 | ||
1042 | /* See gdbthread.h. */ | |
1043 | ||
1044 | int | |
1045 | threads_are_executing (void) | |
1046 | { | |
1047 | return threads_executing; | |
8ea051c5 PA |
1048 | } |
1049 | ||
252fbfc8 PA |
1050 | void |
1051 | set_stop_requested (ptid_t ptid, int stop) | |
1052 | { | |
1053 | struct thread_info *tp; | |
1054 | int all = ptid_equal (ptid, minus_one_ptid); | |
1055 | ||
1056 | if (all || ptid_is_pid (ptid)) | |
1057 | { | |
1058 | for (tp = thread_list; tp; tp = tp->next) | |
1059 | if (all || ptid_get_pid (tp->ptid) == ptid_get_pid (ptid)) | |
1060 | tp->stop_requested = stop; | |
1061 | } | |
1062 | else | |
1063 | { | |
e09875d4 | 1064 | tp = find_thread_ptid (ptid); |
252fbfc8 PA |
1065 | gdb_assert (tp); |
1066 | tp->stop_requested = stop; | |
1067 | } | |
1068 | ||
1069 | /* Call the stop requested observer so other components of GDB can | |
1070 | react to this request. */ | |
1071 | if (stop) | |
1072 | observer_notify_thread_stop_requested (ptid); | |
1073 | } | |
1074 | ||
29f49a6a PA |
1075 | void |
1076 | finish_thread_state (ptid_t ptid) | |
1077 | { | |
1078 | struct thread_info *tp; | |
1079 | int all; | |
1080 | int any_started = 0; | |
1081 | ||
1082 | all = ptid_equal (ptid, minus_one_ptid); | |
1083 | ||
1084 | if (all || ptid_is_pid (ptid)) | |
1085 | { | |
1086 | for (tp = thread_list; tp; tp = tp->next) | |
1087 | { | |
30596231 | 1088 | if (tp->state == THREAD_EXITED) |
29f49a6a PA |
1089 | continue; |
1090 | if (all || ptid_get_pid (ptid) == ptid_get_pid (tp->ptid)) | |
1091 | { | |
4d9d9d04 | 1092 | if (set_running_thread (tp, tp->executing)) |
29f49a6a | 1093 | any_started = 1; |
29f49a6a PA |
1094 | } |
1095 | } | |
1096 | } | |
1097 | else | |
1098 | { | |
e09875d4 | 1099 | tp = find_thread_ptid (ptid); |
29f49a6a | 1100 | gdb_assert (tp); |
30596231 | 1101 | if (tp->state != THREAD_EXITED) |
29f49a6a | 1102 | { |
4d9d9d04 | 1103 | if (set_running_thread (tp, tp->executing)) |
29f49a6a | 1104 | any_started = 1; |
29f49a6a PA |
1105 | } |
1106 | } | |
1107 | ||
1108 | if (any_started) | |
1109 | observer_notify_target_resumed (ptid); | |
1110 | } | |
1111 | ||
1112 | void | |
1113 | finish_thread_state_cleanup (void *arg) | |
1114 | { | |
19ba03f4 | 1115 | ptid_t *ptid_p = (ptid_t *) arg; |
29f49a6a PA |
1116 | |
1117 | gdb_assert (arg); | |
1118 | ||
1119 | finish_thread_state (*ptid_p); | |
1120 | } | |
1121 | ||
a911d87a PA |
1122 | /* See gdbthread.h. */ |
1123 | ||
1124 | void | |
1125 | validate_registers_access (void) | |
1126 | { | |
1127 | /* No selected thread, no registers. */ | |
1128 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1129 | error (_("No thread selected.")); | |
1130 | ||
1131 | /* Don't try to read from a dead thread. */ | |
1132 | if (is_exited (inferior_ptid)) | |
1133 | error (_("The current thread has terminated")); | |
1134 | ||
1135 | /* ... or from a spinning thread. FIXME: This isn't actually fully | |
1136 | correct. It'll allow an user-requested access (e.g., "print $pc" | |
1137 | at the prompt) when a thread is not executing for some internal | |
1138 | reason, but is marked running from the user's perspective. E.g., | |
1139 | the thread is waiting for its turn in the step-over queue. */ | |
1140 | if (is_executing (inferior_ptid)) | |
1141 | error (_("Selected thread is running.")); | |
1142 | } | |
1143 | ||
ce4c476a PA |
1144 | int |
1145 | pc_in_thread_step_range (CORE_ADDR pc, struct thread_info *thread) | |
1146 | { | |
1147 | return (pc >= thread->control.step_range_start | |
1148 | && pc < thread->control.step_range_end); | |
1149 | } | |
1150 | ||
5d5658a1 PA |
1151 | /* Helper for print_thread_info. Returns true if THR should be |
1152 | printed. If REQUESTED_THREADS, a list of GDB ids/ranges, is not | |
1153 | NULL, only print THR if its ID is included in the list. GLOBAL_IDS | |
1154 | is true if REQUESTED_THREADS is list of global IDs, false if a list | |
1155 | of per-inferior thread ids. If PID is not -1, only print THR if it | |
1156 | is a thread from the process PID. Otherwise, threads from all | |
1157 | attached PIDs are printed. If both REQUESTED_THREADS is not NULL | |
1158 | and PID is not -1, then the thread is printed if it belongs to the | |
1159 | specified process. Otherwise, an error is raised. */ | |
1160 | ||
1161 | static int | |
1162 | should_print_thread (const char *requested_threads, int default_inf_num, | |
1163 | int global_ids, int pid, struct thread_info *thr) | |
1164 | { | |
1165 | if (requested_threads != NULL && *requested_threads != '\0') | |
1166 | { | |
1167 | int in_list; | |
1168 | ||
1169 | if (global_ids) | |
1170 | in_list = number_is_in_list (requested_threads, thr->global_num); | |
1171 | else | |
1172 | in_list = tid_is_in_list (requested_threads, default_inf_num, | |
1173 | thr->inf->num, thr->per_inf_num); | |
1174 | if (!in_list) | |
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | if (pid != -1 && ptid_get_pid (thr->ptid) != pid) | |
1179 | { | |
1180 | if (requested_threads != NULL && *requested_threads != '\0') | |
1181 | error (_("Requested thread not found in requested process")); | |
1182 | return 0; | |
1183 | } | |
1184 | ||
1185 | if (thr->state == THREAD_EXITED) | |
1186 | return 0; | |
1187 | ||
1188 | return 1; | |
1189 | } | |
1190 | ||
1191 | /* Like print_thread_info, but in addition, GLOBAL_IDS indicates | |
1192 | whether REQUESTED_THREADS is a list of global or per-inferior | |
1193 | thread ids. */ | |
1194 | ||
1195 | static void | |
1196 | print_thread_info_1 (struct ui_out *uiout, char *requested_threads, | |
1197 | int global_ids, int pid, | |
1198 | int show_global_ids) | |
c906108c SS |
1199 | { |
1200 | struct thread_info *tp; | |
39f77062 | 1201 | ptid_t current_ptid; |
99b3d574 | 1202 | struct cleanup *old_chain; |
73ede765 | 1203 | const char *extra_info, *name, *target_id; |
5d5658a1 PA |
1204 | struct inferior *inf; |
1205 | int default_inf_num = current_inferior ()->num; | |
c906108c | 1206 | |
dc146f7c | 1207 | update_thread_list (); |
39f77062 | 1208 | current_ptid = inferior_ptid; |
4f8d22e3 PA |
1209 | |
1210 | /* We'll be switching threads temporarily. */ | |
1211 | old_chain = make_cleanup_restore_current_thread (); | |
1212 | ||
a7658b96 TT |
1213 | /* For backward compatibility, we make a list for MI. A table is |
1214 | preferable for the CLI, though, because it shows table | |
1215 | headers. */ | |
1216 | if (ui_out_is_mi_like_p (uiout)) | |
1217 | make_cleanup_ui_out_list_begin_end (uiout, "threads"); | |
1218 | else | |
1219 | { | |
1220 | int n_threads = 0; | |
1221 | ||
1222 | for (tp = thread_list; tp; tp = tp->next) | |
1223 | { | |
5d5658a1 PA |
1224 | if (!should_print_thread (requested_threads, default_inf_num, |
1225 | global_ids, pid, tp)) | |
a7658b96 TT |
1226 | continue; |
1227 | ||
1228 | ++n_threads; | |
1229 | } | |
1230 | ||
1231 | if (n_threads == 0) | |
1232 | { | |
aea5b279 | 1233 | if (requested_threads == NULL || *requested_threads == '\0') |
7fb048a2 | 1234 | ui_out_message (uiout, _("No threads.\n")); |
a7658b96 | 1235 | else |
7fb048a2 | 1236 | ui_out_message (uiout, _("No threads match '%s'.\n"), |
aea5b279 | 1237 | requested_threads); |
a7658b96 TT |
1238 | do_cleanups (old_chain); |
1239 | return; | |
1240 | } | |
1241 | ||
5d5658a1 PA |
1242 | if (show_global_ids || ui_out_is_mi_like_p (uiout)) |
1243 | make_cleanup_ui_out_table_begin_end (uiout, 5, n_threads, "threads"); | |
1244 | else | |
1245 | make_cleanup_ui_out_table_begin_end (uiout, 4, n_threads, "threads"); | |
a7658b96 TT |
1246 | |
1247 | ui_out_table_header (uiout, 1, ui_left, "current", ""); | |
5d5658a1 PA |
1248 | |
1249 | if (!ui_out_is_mi_like_p (uiout)) | |
1250 | ui_out_table_header (uiout, 4, ui_left, "id-in-tg", "Id"); | |
1251 | if (show_global_ids || ui_out_is_mi_like_p (uiout)) | |
1252 | ui_out_table_header (uiout, 4, ui_left, "id", "GId"); | |
a7658b96 | 1253 | ui_out_table_header (uiout, 17, ui_left, "target-id", "Target Id"); |
a7658b96 TT |
1254 | ui_out_table_header (uiout, 1, ui_left, "frame", "Frame"); |
1255 | ui_out_table_body (uiout); | |
1256 | } | |
1257 | ||
5d5658a1 | 1258 | ALL_THREADS_BY_INFERIOR (inf, tp) |
c906108c | 1259 | { |
8e8901c5 | 1260 | struct cleanup *chain2; |
dc146f7c | 1261 | int core; |
8e8901c5 | 1262 | |
5d5658a1 PA |
1263 | if (!should_print_thread (requested_threads, default_inf_num, |
1264 | global_ids, pid, tp)) | |
4f8d22e3 PA |
1265 | continue; |
1266 | ||
8e8901c5 VP |
1267 | chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); |
1268 | ||
a7658b96 TT |
1269 | if (ui_out_is_mi_like_p (uiout)) |
1270 | { | |
1271 | /* Compatibility. */ | |
1272 | if (ptid_equal (tp->ptid, current_ptid)) | |
1273 | ui_out_text (uiout, "* "); | |
1274 | else | |
1275 | ui_out_text (uiout, " "); | |
1276 | } | |
c906108c | 1277 | else |
a7658b96 TT |
1278 | { |
1279 | if (ptid_equal (tp->ptid, current_ptid)) | |
1280 | ui_out_field_string (uiout, "current", "*"); | |
1281 | else | |
1282 | ui_out_field_skip (uiout, "current"); | |
1283 | } | |
c906108c | 1284 | |
5d5658a1 PA |
1285 | if (!ui_out_is_mi_like_p (uiout)) |
1286 | ui_out_field_string (uiout, "id-in-tg", print_thread_id (tp)); | |
1287 | ||
1288 | if (show_global_ids || ui_out_is_mi_like_p (uiout)) | |
1289 | ui_out_field_int (uiout, "id", tp->global_num); | |
0d06e24b | 1290 | |
4694da01 TT |
1291 | /* For the CLI, we stuff everything into the target-id field. |
1292 | This is a gross hack to make the output come out looking | |
1293 | correct. The underlying problem here is that ui-out has no | |
1294 | way to specify that a field's space allocation should be | |
1295 | shared by several fields. For MI, we do the right thing | |
1296 | instead. */ | |
1297 | ||
1298 | target_id = target_pid_to_str (tp->ptid); | |
ed406532 | 1299 | extra_info = target_extra_thread_info (tp); |
4694da01 TT |
1300 | name = tp->name ? tp->name : target_thread_name (tp); |
1301 | ||
1302 | if (ui_out_is_mi_like_p (uiout)) | |
8e8901c5 | 1303 | { |
4694da01 TT |
1304 | ui_out_field_string (uiout, "target-id", target_id); |
1305 | if (extra_info) | |
1306 | ui_out_field_string (uiout, "details", extra_info); | |
1307 | if (name) | |
1308 | ui_out_field_string (uiout, "name", name); | |
1309 | } | |
1310 | else | |
1311 | { | |
1312 | struct cleanup *str_cleanup; | |
1313 | char *contents; | |
1314 | ||
1315 | if (extra_info && name) | |
1316 | contents = xstrprintf ("%s \"%s\" (%s)", target_id, | |
1317 | name, extra_info); | |
1318 | else if (extra_info) | |
1319 | contents = xstrprintf ("%s (%s)", target_id, extra_info); | |
1320 | else if (name) | |
1321 | contents = xstrprintf ("%s \"%s\"", target_id, name); | |
1322 | else | |
1323 | contents = xstrdup (target_id); | |
1324 | str_cleanup = make_cleanup (xfree, contents); | |
1325 | ||
1326 | ui_out_field_string (uiout, "target-id", contents); | |
1327 | do_cleanups (str_cleanup); | |
8e8901c5 | 1328 | } |
4f8d22e3 | 1329 | |
30596231 | 1330 | if (tp->state == THREAD_RUNNING) |
94cc34af PA |
1331 | ui_out_text (uiout, "(running)\n"); |
1332 | else | |
1333 | { | |
1334 | /* The switch below puts us at the top of the stack (leaf | |
1335 | frame). */ | |
1336 | switch_to_thread (tp->ptid); | |
1337 | print_stack_frame (get_selected_frame (NULL), | |
1338 | /* For MI output, print frame level. */ | |
1339 | ui_out_is_mi_like_p (uiout), | |
08d72866 | 1340 | LOCATION, 0); |
94cc34af | 1341 | } |
8e8901c5 | 1342 | |
90139f7d VP |
1343 | if (ui_out_is_mi_like_p (uiout)) |
1344 | { | |
1345 | char *state = "stopped"; | |
5d502164 | 1346 | |
30596231 | 1347 | if (tp->state == THREAD_RUNNING) |
90139f7d VP |
1348 | state = "running"; |
1349 | ui_out_field_string (uiout, "state", state); | |
1350 | } | |
1351 | ||
dc146f7c VP |
1352 | core = target_core_of_thread (tp->ptid); |
1353 | if (ui_out_is_mi_like_p (uiout) && core != -1) | |
1354 | ui_out_field_int (uiout, "core", core); | |
1355 | ||
8e8901c5 | 1356 | do_cleanups (chain2); |
c906108c SS |
1357 | } |
1358 | ||
99b3d574 DP |
1359 | /* Restores the current thread and the frame selected before |
1360 | the "info threads" command. */ | |
1361 | do_cleanups (old_chain); | |
c906108c | 1362 | |
aea5b279 | 1363 | if (pid == -1 && requested_threads == NULL) |
8e8901c5 | 1364 | { |
5d5658a1 PA |
1365 | if (ui_out_is_mi_like_p (uiout) |
1366 | && !ptid_equal (inferior_ptid, null_ptid)) | |
1367 | { | |
1368 | int num = ptid_to_global_thread_id (inferior_ptid); | |
1369 | ||
1370 | gdb_assert (num != 0); | |
1371 | ui_out_field_int (uiout, "current-thread-id", num); | |
1372 | } | |
94cc34af | 1373 | |
5d5658a1 | 1374 | if (!ptid_equal (inferior_ptid, null_ptid) && is_exited (inferior_ptid)) |
7fb048a2 | 1375 | ui_out_message (uiout, "\n\ |
5d5658a1 PA |
1376 | The current thread <Thread ID %s> has terminated. See `help thread'.\n", |
1377 | print_thread_id (inferior_thread ())); | |
1378 | else if (thread_list != NULL | |
1379 | && ptid_equal (inferior_ptid, null_ptid)) | |
7fb048a2 | 1380 | ui_out_message (uiout, "\n\ |
d729566a | 1381 | No selected thread. See `help thread'.\n"); |
c906108c | 1382 | } |
c906108c SS |
1383 | } |
1384 | ||
5d5658a1 | 1385 | /* See gdbthread.h. */ |
8e8901c5 | 1386 | |
5d5658a1 PA |
1387 | void |
1388 | print_thread_info (struct ui_out *uiout, char *requested_threads, int pid) | |
1389 | { | |
1390 | print_thread_info_1 (uiout, requested_threads, 1, pid, 0); | |
1391 | } | |
1392 | ||
1393 | /* Implementation of the "info threads" command. | |
60f98dde MS |
1394 | |
1395 | Note: this has the drawback that it _really_ switches | |
1396 | threads, which frees the frame cache. A no-side | |
1397 | effects info-threads command would be nicer. */ | |
8e8901c5 VP |
1398 | |
1399 | static void | |
1400 | info_threads_command (char *arg, int from_tty) | |
1401 | { | |
c84f6bbf PA |
1402 | int show_global_ids = 0; |
1403 | ||
1404 | if (arg != NULL | |
1405 | && check_for_argument (&arg, "-gid", sizeof ("-gid") - 1)) | |
1406 | { | |
1407 | arg = skip_spaces (arg); | |
1408 | show_global_ids = 1; | |
1409 | } | |
1410 | ||
1411 | print_thread_info_1 (current_uiout, arg, 0, -1, show_global_ids); | |
8e8901c5 VP |
1412 | } |
1413 | ||
6efcd9a8 PA |
1414 | /* See gdbthread.h. */ |
1415 | ||
1416 | void | |
1417 | switch_to_thread_no_regs (struct thread_info *thread) | |
1418 | { | |
1419 | struct inferior *inf; | |
1420 | ||
1421 | inf = find_inferior_ptid (thread->ptid); | |
1422 | gdb_assert (inf != NULL); | |
1423 | set_current_program_space (inf->pspace); | |
1424 | set_current_inferior (inf); | |
1425 | ||
1426 | inferior_ptid = thread->ptid; | |
1427 | stop_pc = ~(CORE_ADDR) 0; | |
1428 | } | |
1429 | ||
c378eb4e | 1430 | /* Switch from one thread to another. */ |
c906108c | 1431 | |
6a6b96b9 | 1432 | void |
39f77062 | 1433 | switch_to_thread (ptid_t ptid) |
c906108c | 1434 | { |
6c95b8df PA |
1435 | /* Switch the program space as well, if we can infer it from the now |
1436 | current thread. Otherwise, it's up to the caller to select the | |
1437 | space it wants. */ | |
1438 | if (!ptid_equal (ptid, null_ptid)) | |
1439 | { | |
1440 | struct inferior *inf; | |
1441 | ||
c9657e70 | 1442 | inf = find_inferior_ptid (ptid); |
6c95b8df PA |
1443 | gdb_assert (inf != NULL); |
1444 | set_current_program_space (inf->pspace); | |
1445 | set_current_inferior (inf); | |
1446 | } | |
1447 | ||
39f77062 | 1448 | if (ptid_equal (ptid, inferior_ptid)) |
c906108c SS |
1449 | return; |
1450 | ||
39f77062 | 1451 | inferior_ptid = ptid; |
35f196d9 | 1452 | reinit_frame_cache (); |
94cc34af | 1453 | |
4f8d22e3 PA |
1454 | /* We don't check for is_stopped, because we're called at times |
1455 | while in the TARGET_RUNNING state, e.g., while handling an | |
1456 | internal event. */ | |
d729566a PA |
1457 | if (!ptid_equal (inferior_ptid, null_ptid) |
1458 | && !is_exited (ptid) | |
1459 | && !is_executing (ptid)) | |
fb14de7b | 1460 | stop_pc = regcache_read_pc (get_thread_regcache (ptid)); |
94cc34af PA |
1461 | else |
1462 | stop_pc = ~(CORE_ADDR) 0; | |
c906108c SS |
1463 | } |
1464 | ||
1465 | static void | |
39f77062 | 1466 | restore_current_thread (ptid_t ptid) |
c906108c | 1467 | { |
dcf4fbde | 1468 | switch_to_thread (ptid); |
99b3d574 DP |
1469 | } |
1470 | ||
1471 | static void | |
4f8d22e3 | 1472 | restore_selected_frame (struct frame_id a_frame_id, int frame_level) |
99b3d574 | 1473 | { |
4f8d22e3 PA |
1474 | struct frame_info *frame = NULL; |
1475 | int count; | |
1476 | ||
eb8c0621 TT |
1477 | /* This means there was no selected frame. */ |
1478 | if (frame_level == -1) | |
1479 | { | |
1480 | select_frame (NULL); | |
1481 | return; | |
1482 | } | |
1483 | ||
4f8d22e3 PA |
1484 | gdb_assert (frame_level >= 0); |
1485 | ||
1486 | /* Restore by level first, check if the frame id is the same as | |
1487 | expected. If that fails, try restoring by frame id. If that | |
1488 | fails, nothing to do, just warn the user. */ | |
1489 | ||
1490 | count = frame_level; | |
1491 | frame = find_relative_frame (get_current_frame (), &count); | |
1492 | if (count == 0 | |
1493 | && frame != NULL | |
005ca36a JB |
1494 | /* The frame ids must match - either both valid or both outer_frame_id. |
1495 | The latter case is not failsafe, but since it's highly unlikely | |
4f8d22e3 PA |
1496 | the search by level finds the wrong frame, it's 99.9(9)% of |
1497 | the time (for all practical purposes) safe. */ | |
005ca36a | 1498 | && frame_id_eq (get_frame_id (frame), a_frame_id)) |
4f8d22e3 PA |
1499 | { |
1500 | /* Cool, all is fine. */ | |
1501 | select_frame (frame); | |
1502 | return; | |
1503 | } | |
99b3d574 | 1504 | |
4f8d22e3 PA |
1505 | frame = frame_find_by_id (a_frame_id); |
1506 | if (frame != NULL) | |
1507 | { | |
1508 | /* Cool, refound it. */ | |
1509 | select_frame (frame); | |
1510 | return; | |
1511 | } | |
99b3d574 | 1512 | |
0c501536 PA |
1513 | /* Nothing else to do, the frame layout really changed. Select the |
1514 | innermost stack frame. */ | |
1515 | select_frame (get_current_frame ()); | |
1516 | ||
1517 | /* Warn the user. */ | |
79a45e25 | 1518 | if (frame_level > 0 && !ui_out_is_mi_like_p (current_uiout)) |
99b3d574 | 1519 | { |
3e43a32a | 1520 | warning (_("Couldn't restore frame #%d in " |
e0162910 | 1521 | "current thread. Bottom (innermost) frame selected:"), |
4f8d22e3 PA |
1522 | frame_level); |
1523 | /* For MI, we should probably have a notification about | |
1524 | current frame change. But this error is not very | |
1525 | likely, so don't bother for now. */ | |
08d72866 | 1526 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
1527 | } |
1528 | } | |
1529 | ||
e1316e60 PA |
1530 | /* Data used by the cleanup installed by |
1531 | 'make_cleanup_restore_current_thread'. */ | |
1532 | ||
6ecce94d AC |
1533 | struct current_thread_cleanup |
1534 | { | |
e1316e60 PA |
1535 | /* Next in list of currently installed 'struct |
1536 | current_thread_cleanup' cleanups. See | |
1537 | 'current_thread_cleanup_chain' below. */ | |
1538 | struct current_thread_cleanup *next; | |
1539 | ||
39f77062 | 1540 | ptid_t inferior_ptid; |
99b3d574 | 1541 | struct frame_id selected_frame_id; |
4f8d22e3 PA |
1542 | int selected_frame_level; |
1543 | int was_stopped; | |
6c95b8df | 1544 | int inf_id; |
9addecb9 | 1545 | int was_removable; |
6ecce94d AC |
1546 | }; |
1547 | ||
e1316e60 PA |
1548 | /* A chain of currently installed 'struct current_thread_cleanup' |
1549 | cleanups. Restoring the previously selected thread looks up the | |
1550 | old thread in the thread list by ptid. If the thread changes ptid, | |
1551 | we need to update the cleanup's thread structure so the look up | |
1552 | succeeds. */ | |
1553 | static struct current_thread_cleanup *current_thread_cleanup_chain; | |
1554 | ||
1555 | /* A thread_ptid_changed observer. Update all currently installed | |
1556 | current_thread_cleanup cleanups that want to switch back to | |
1557 | OLD_PTID to switch back to NEW_PTID instead. */ | |
1558 | ||
1559 | static void | |
1560 | restore_current_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) | |
1561 | { | |
1562 | struct current_thread_cleanup *it; | |
1563 | ||
1564 | for (it = current_thread_cleanup_chain; it != NULL; it = it->next) | |
1565 | { | |
1566 | if (ptid_equal (it->inferior_ptid, old_ptid)) | |
1567 | it->inferior_ptid = new_ptid; | |
1568 | } | |
1569 | } | |
1570 | ||
6ecce94d AC |
1571 | static void |
1572 | do_restore_current_thread_cleanup (void *arg) | |
1573 | { | |
4f8d22e3 | 1574 | struct thread_info *tp; |
19ba03f4 | 1575 | struct current_thread_cleanup *old = (struct current_thread_cleanup *) arg; |
d729566a | 1576 | |
e09875d4 | 1577 | tp = find_thread_ptid (old->inferior_ptid); |
d729566a PA |
1578 | |
1579 | /* If the previously selected thread belonged to a process that has | |
1580 | in the mean time been deleted (due to normal exit, detach, etc.), | |
1581 | then don't revert back to it, but instead simply drop back to no | |
1582 | thread selected. */ | |
1583 | if (tp | |
c9657e70 | 1584 | && find_inferior_ptid (tp->ptid) != NULL) |
d729566a | 1585 | restore_current_thread (old->inferior_ptid); |
88fc996f | 1586 | else |
6c95b8df PA |
1587 | { |
1588 | restore_current_thread (null_ptid); | |
1589 | set_current_inferior (find_inferior_id (old->inf_id)); | |
1590 | } | |
94cc34af | 1591 | |
4f8d22e3 PA |
1592 | /* The running state of the originally selected thread may have |
1593 | changed, so we have to recheck it here. */ | |
d729566a PA |
1594 | if (!ptid_equal (inferior_ptid, null_ptid) |
1595 | && old->was_stopped | |
4f8d22e3 PA |
1596 | && is_stopped (inferior_ptid) |
1597 | && target_has_registers | |
1598 | && target_has_stack | |
1599 | && target_has_memory) | |
1600 | restore_selected_frame (old->selected_frame_id, | |
1601 | old->selected_frame_level); | |
1602 | } | |
1603 | ||
1604 | static void | |
1605 | restore_current_thread_cleanup_dtor (void *arg) | |
1606 | { | |
19ba03f4 | 1607 | struct current_thread_cleanup *old = (struct current_thread_cleanup *) arg; |
4f8d22e3 | 1608 | struct thread_info *tp; |
9addecb9 | 1609 | struct inferior *inf; |
5d502164 | 1610 | |
e1316e60 PA |
1611 | current_thread_cleanup_chain = current_thread_cleanup_chain->next; |
1612 | ||
e09875d4 | 1613 | tp = find_thread_ptid (old->inferior_ptid); |
4f8d22e3 PA |
1614 | if (tp) |
1615 | tp->refcount--; | |
9addecb9 TT |
1616 | inf = find_inferior_id (old->inf_id); |
1617 | if (inf != NULL) | |
1618 | inf->removable = old->was_removable; | |
b8c9b27d | 1619 | xfree (old); |
6ecce94d AC |
1620 | } |
1621 | ||
054e8d9e AA |
1622 | /* Set the thread reference count. */ |
1623 | ||
1624 | static void | |
1625 | set_thread_refcount (void *data) | |
1626 | { | |
1627 | int k; | |
19ba03f4 SM |
1628 | struct thread_array_cleanup *ta_cleanup |
1629 | = (struct thread_array_cleanup *) data; | |
054e8d9e AA |
1630 | |
1631 | for (k = 0; k != ta_cleanup->count; k++) | |
1632 | ta_cleanup->tp_array[k]->refcount--; | |
1633 | } | |
1634 | ||
6208b47d | 1635 | struct cleanup * |
4f8d22e3 | 1636 | make_cleanup_restore_current_thread (void) |
6ecce94d | 1637 | { |
4f8d22e3 PA |
1638 | struct thread_info *tp; |
1639 | struct frame_info *frame; | |
8d749320 | 1640 | struct current_thread_cleanup *old = XNEW (struct current_thread_cleanup); |
4f8d22e3 | 1641 | |
39f77062 | 1642 | old->inferior_ptid = inferior_ptid; |
6c95b8df | 1643 | old->inf_id = current_inferior ()->num; |
9addecb9 | 1644 | old->was_removable = current_inferior ()->removable; |
4f8d22e3 | 1645 | |
e1316e60 PA |
1646 | old->next = current_thread_cleanup_chain; |
1647 | current_thread_cleanup_chain = old; | |
1648 | ||
d729566a PA |
1649 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1650 | { | |
1651 | old->was_stopped = is_stopped (inferior_ptid); | |
1652 | if (old->was_stopped | |
1653 | && target_has_registers | |
1654 | && target_has_stack | |
1655 | && target_has_memory) | |
eb8c0621 TT |
1656 | { |
1657 | /* When processing internal events, there might not be a | |
1658 | selected frame. If we naively call get_selected_frame | |
1659 | here, then we can end up reading debuginfo for the | |
1660 | current frame, but we don't generally need the debuginfo | |
1661 | at this point. */ | |
1662 | frame = get_selected_frame_if_set (); | |
1663 | } | |
d729566a PA |
1664 | else |
1665 | frame = NULL; | |
4f8d22e3 | 1666 | |
d729566a PA |
1667 | old->selected_frame_id = get_frame_id (frame); |
1668 | old->selected_frame_level = frame_relative_level (frame); | |
1669 | ||
e09875d4 | 1670 | tp = find_thread_ptid (inferior_ptid); |
d729566a PA |
1671 | if (tp) |
1672 | tp->refcount++; | |
1673 | } | |
4f8d22e3 | 1674 | |
9addecb9 TT |
1675 | current_inferior ()->removable = 0; |
1676 | ||
4f8d22e3 PA |
1677 | return make_cleanup_dtor (do_restore_current_thread_cleanup, old, |
1678 | restore_current_thread_cleanup_dtor); | |
6ecce94d AC |
1679 | } |
1680 | ||
43792cf0 PA |
1681 | /* See gdbthread.h. */ |
1682 | ||
f303dbd6 PA |
1683 | int |
1684 | show_thread_that_caused_stop (void) | |
1685 | { | |
1686 | return highest_thread_num > 1; | |
1687 | } | |
1688 | ||
1689 | /* See gdbthread.h. */ | |
1690 | ||
5d5658a1 PA |
1691 | int |
1692 | show_inferior_qualified_tids (void) | |
1693 | { | |
1694 | return (inferior_list->next != NULL || inferior_list->num != 1); | |
1695 | } | |
1696 | ||
1697 | /* See gdbthread.h. */ | |
1698 | ||
43792cf0 PA |
1699 | const char * |
1700 | print_thread_id (struct thread_info *thr) | |
1701 | { | |
1702 | char *s = get_print_cell (); | |
1703 | ||
5d5658a1 PA |
1704 | if (show_inferior_qualified_tids ()) |
1705 | xsnprintf (s, PRINT_CELL_SIZE, "%d.%d", thr->inf->num, thr->per_inf_num); | |
1706 | else | |
1707 | xsnprintf (s, PRINT_CELL_SIZE, "%d", thr->per_inf_num); | |
43792cf0 PA |
1708 | return s; |
1709 | } | |
1710 | ||
253828f1 JK |
1711 | /* If non-zero tp_array_compar should sort in ascending order, otherwise in |
1712 | descending order. */ | |
1713 | ||
1714 | static int tp_array_compar_ascending; | |
1715 | ||
5d5658a1 PA |
1716 | /* Sort an array for struct thread_info pointers by thread ID (first |
1717 | by inferior number, and then by per-inferior thread number). The | |
1718 | order is determined by TP_ARRAY_COMPAR_ASCENDING. */ | |
253828f1 JK |
1719 | |
1720 | static int | |
1721 | tp_array_compar (const void *ap_voidp, const void *bp_voidp) | |
1722 | { | |
5d5658a1 PA |
1723 | const struct thread_info *a = *(const struct thread_info * const *) ap_voidp; |
1724 | const struct thread_info *b = *(const struct thread_info * const *) bp_voidp; | |
1725 | ||
1726 | if (a->inf->num != b->inf->num) | |
1727 | { | |
5af962df | 1728 | return (((a->inf->num > b->inf->num) - (a->inf->num < b->inf->num)) |
5d5658a1 PA |
1729 | * (tp_array_compar_ascending ? +1 : -1)); |
1730 | } | |
253828f1 | 1731 | |
5d5658a1 PA |
1732 | return (((a->per_inf_num > b->per_inf_num) |
1733 | - (a->per_inf_num < b->per_inf_num)) | |
253828f1 JK |
1734 | * (tp_array_compar_ascending ? +1 : -1)); |
1735 | } | |
1736 | ||
c906108c SS |
1737 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
1738 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist | |
1739 | of two numbers seperated by a hyphen. Examples: | |
1740 | ||
c5aa993b JM |
1741 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
1742 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
c378eb4e | 1743 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads. */ |
c906108c SS |
1744 | |
1745 | static void | |
fba45db2 | 1746 | thread_apply_all_command (char *cmd, int from_tty) |
c906108c | 1747 | { |
4f8d22e3 | 1748 | struct cleanup *old_chain; |
e35ce267 | 1749 | char *saved_cmd; |
054e8d9e AA |
1750 | int tc; |
1751 | struct thread_array_cleanup ta_cleanup; | |
c906108c | 1752 | |
253828f1 JK |
1753 | tp_array_compar_ascending = 0; |
1754 | if (cmd != NULL | |
1755 | && check_for_argument (&cmd, "-ascending", strlen ("-ascending"))) | |
1756 | { | |
1757 | cmd = skip_spaces (cmd); | |
1758 | tp_array_compar_ascending = 1; | |
1759 | } | |
1760 | ||
c906108c | 1761 | if (cmd == NULL || *cmd == '\000') |
8a3fe4f8 | 1762 | error (_("Please specify a command following the thread ID list")); |
94cc34af | 1763 | |
dc146f7c | 1764 | update_thread_list (); |
e9d196c5 | 1765 | |
4f8d22e3 PA |
1766 | old_chain = make_cleanup_restore_current_thread (); |
1767 | ||
e35ce267 | 1768 | /* Save a copy of the command in case it is clobbered by |
c378eb4e | 1769 | execute_command. */ |
5b616ba1 | 1770 | saved_cmd = xstrdup (cmd); |
94cc34af | 1771 | make_cleanup (xfree, saved_cmd); |
94cc34af | 1772 | |
a25d8bf9 PA |
1773 | /* Note this includes exited threads. */ |
1774 | tc = thread_count (); | |
1775 | if (tc != 0) | |
054e8d9e AA |
1776 | { |
1777 | struct thread_info **tp_array; | |
1778 | struct thread_info *tp; | |
1779 | int i = 0, k; | |
1780 | ||
1781 | /* Save a copy of the thread_list in case we execute detach | |
1782 | command. */ | |
8d749320 | 1783 | tp_array = XNEWVEC (struct thread_info *, tc); |
054e8d9e | 1784 | make_cleanup (xfree, tp_array); |
054e8d9e | 1785 | |
034f788c | 1786 | ALL_NON_EXITED_THREADS (tp) |
054e8d9e AA |
1787 | { |
1788 | tp_array[i] = tp; | |
1789 | tp->refcount++; | |
1790 | i++; | |
1791 | } | |
a25d8bf9 PA |
1792 | /* Because we skipped exited threads, we may end up with fewer |
1793 | threads in the array than the total count of threads. */ | |
1794 | gdb_assert (i <= tc); | |
054e8d9e | 1795 | |
a25d8bf9 PA |
1796 | if (i != 0) |
1797 | qsort (tp_array, i, sizeof (*tp_array), tp_array_compar); | |
253828f1 | 1798 | |
a25d8bf9 PA |
1799 | ta_cleanup.tp_array = tp_array; |
1800 | ta_cleanup.count = i; | |
054e8d9e AA |
1801 | make_cleanup (set_thread_refcount, &ta_cleanup); |
1802 | ||
1803 | for (k = 0; k != i; k++) | |
1804 | if (thread_alive (tp_array[k])) | |
1805 | { | |
1806 | switch_to_thread (tp_array[k]->ptid); | |
43792cf0 PA |
1807 | printf_filtered (_("\nThread %s (%s):\n"), |
1808 | print_thread_id (tp_array[k]), | |
054e8d9e AA |
1809 | target_pid_to_str (inferior_ptid)); |
1810 | execute_command (cmd, from_tty); | |
1811 | ||
1812 | /* Restore exact command used previously. */ | |
1813 | strcpy (cmd, saved_cmd); | |
1814 | } | |
1815 | } | |
6ecce94d AC |
1816 | |
1817 | do_cleanups (old_chain); | |
c906108c SS |
1818 | } |
1819 | ||
43792cf0 PA |
1820 | /* Implementation of the "thread apply" command. */ |
1821 | ||
c906108c | 1822 | static void |
fba45db2 | 1823 | thread_apply_command (char *tidlist, int from_tty) |
c906108c | 1824 | { |
3f5b7598 | 1825 | char *cmd = NULL; |
c906108c | 1826 | struct cleanup *old_chain; |
e35ce267 | 1827 | char *saved_cmd; |
bfd28288 | 1828 | tid_range_parser parser; |
c906108c SS |
1829 | |
1830 | if (tidlist == NULL || *tidlist == '\000') | |
8a3fe4f8 | 1831 | error (_("Please specify a thread ID list")); |
c906108c | 1832 | |
bfd28288 PA |
1833 | parser.init (tidlist, current_inferior ()->num); |
1834 | while (!parser.finished ()) | |
3f5b7598 PA |
1835 | { |
1836 | int inf_num, thr_start, thr_end; | |
c906108c | 1837 | |
bfd28288 | 1838 | if (!parser.get_tid_range (&inf_num, &thr_start, &thr_end)) |
3f5b7598 | 1839 | { |
bfd28288 | 1840 | cmd = (char *) parser.cur_tok (); |
3f5b7598 PA |
1841 | break; |
1842 | } | |
1843 | } | |
1844 | ||
1845 | if (cmd == NULL) | |
8a3fe4f8 | 1846 | error (_("Please specify a command following the thread ID list")); |
c906108c | 1847 | |
3f5b7598 PA |
1848 | if (tidlist == cmd || !isalpha (cmd[0])) |
1849 | invalid_thread_id_error (cmd); | |
1850 | ||
e35ce267 | 1851 | /* Save a copy of the command in case it is clobbered by |
c378eb4e | 1852 | execute_command. */ |
5b616ba1 | 1853 | saved_cmd = xstrdup (cmd); |
4f8d22e3 | 1854 | old_chain = make_cleanup (xfree, saved_cmd); |
197f0a60 | 1855 | |
5d5658a1 | 1856 | make_cleanup_restore_current_thread (); |
c906108c | 1857 | |
bfd28288 PA |
1858 | parser.init (tidlist, current_inferior ()->num); |
1859 | while (!parser.finished () && parser.cur_tok () < cmd) | |
5d5658a1 PA |
1860 | { |
1861 | struct thread_info *tp = NULL; | |
1862 | struct inferior *inf; | |
1863 | int inf_num, thr_num; | |
65fc9b77 | 1864 | |
bfd28288 | 1865 | parser.get_tid (&inf_num, &thr_num); |
5d5658a1 PA |
1866 | inf = find_inferior_id (inf_num); |
1867 | if (inf != NULL) | |
1868 | tp = find_thread_id (inf, thr_num); | |
71ef29a8 | 1869 | |
bfd28288 | 1870 | if (parser.in_star_range ()) |
71ef29a8 PA |
1871 | { |
1872 | if (inf == NULL) | |
1873 | { | |
1874 | warning (_("Unknown inferior %d"), inf_num); | |
bfd28288 | 1875 | parser.skip_range (); |
71ef29a8 PA |
1876 | continue; |
1877 | } | |
1878 | ||
1879 | /* No use looking for threads past the highest thread number | |
1880 | the inferior ever had. */ | |
1881 | if (thr_num >= inf->highest_thread_num) | |
bfd28288 | 1882 | parser.skip_range (); |
71ef29a8 PA |
1883 | |
1884 | /* Be quiet about unknown threads numbers. */ | |
1885 | if (tp == NULL) | |
1886 | continue; | |
1887 | } | |
1888 | ||
5d5658a1 PA |
1889 | if (tp == NULL) |
1890 | { | |
bfd28288 | 1891 | if (show_inferior_qualified_tids () || parser.tid_is_qualified ()) |
5d5658a1 PA |
1892 | warning (_("Unknown thread %d.%d"), inf_num, thr_num); |
1893 | else | |
1894 | warning (_("Unknown thread %d"), thr_num); | |
1895 | continue; | |
1896 | } | |
c906108c | 1897 | |
5d5658a1 | 1898 | if (!thread_alive (tp)) |
65ebfb52 | 1899 | { |
5d5658a1 PA |
1900 | warning (_("Thread %s has terminated."), print_thread_id (tp)); |
1901 | continue; | |
1902 | } | |
4f8d22e3 | 1903 | |
5d5658a1 | 1904 | switch_to_thread (tp->ptid); |
4f8d22e3 | 1905 | |
5d5658a1 PA |
1906 | printf_filtered (_("\nThread %s (%s):\n"), print_thread_id (tp), |
1907 | target_pid_to_str (inferior_ptid)); | |
1908 | execute_command (cmd, from_tty); | |
1909 | ||
1910 | /* Restore exact command used previously. */ | |
1911 | strcpy (cmd, saved_cmd); | |
c906108c | 1912 | } |
6ecce94d AC |
1913 | |
1914 | do_cleanups (old_chain); | |
c906108c SS |
1915 | } |
1916 | ||
1917 | /* Switch to the specified thread. Will dispatch off to thread_apply_command | |
1918 | if prefix of arg is `apply'. */ | |
1919 | ||
f0e8c4c5 | 1920 | void |
fba45db2 | 1921 | thread_command (char *tidstr, int from_tty) |
c906108c | 1922 | { |
4034d0ff | 1923 | if (tidstr == NULL) |
c906108c | 1924 | { |
d729566a PA |
1925 | if (ptid_equal (inferior_ptid, null_ptid)) |
1926 | error (_("No thread selected")); | |
1927 | ||
c906108c | 1928 | if (target_has_stack) |
4f8d22e3 | 1929 | { |
43792cf0 PA |
1930 | struct thread_info *tp = inferior_thread (); |
1931 | ||
4f8d22e3 | 1932 | if (is_exited (inferior_ptid)) |
43792cf0 PA |
1933 | printf_filtered (_("[Current thread is %s (%s) (exited)]\n"), |
1934 | print_thread_id (tp), | |
54ba13f7 | 1935 | target_pid_to_str (inferior_ptid)); |
4f8d22e3 | 1936 | else |
43792cf0 PA |
1937 | printf_filtered (_("[Current thread is %s (%s)]\n"), |
1938 | print_thread_id (tp), | |
54ba13f7 | 1939 | target_pid_to_str (inferior_ptid)); |
4f8d22e3 | 1940 | } |
c906108c | 1941 | else |
8a3fe4f8 | 1942 | error (_("No stack.")); |
c906108c | 1943 | } |
4034d0ff AT |
1944 | else |
1945 | { | |
1946 | ptid_t previous_ptid = inferior_ptid; | |
1947 | enum gdb_rc result; | |
1948 | ||
1949 | result = gdb_thread_select (current_uiout, tidstr, NULL); | |
1950 | ||
1951 | /* If thread switch did not succeed don't notify or print. */ | |
1952 | if (result == GDB_RC_FAIL) | |
1953 | return; | |
c5394b80 | 1954 | |
4034d0ff AT |
1955 | /* Print if the thread has not changed, otherwise an event will be sent. */ |
1956 | if (ptid_equal (inferior_ptid, previous_ptid)) | |
1957 | { | |
1958 | print_selected_thread_frame (current_uiout, | |
1959 | USER_SELECTED_THREAD | |
1960 | | USER_SELECTED_FRAME); | |
1961 | } | |
1962 | else | |
1963 | { | |
1964 | observer_notify_user_selected_context_changed (USER_SELECTED_THREAD | |
1965 | | USER_SELECTED_FRAME); | |
1966 | } | |
1967 | } | |
c5394b80 JM |
1968 | } |
1969 | ||
4694da01 TT |
1970 | /* Implementation of `thread name'. */ |
1971 | ||
1972 | static void | |
1973 | thread_name_command (char *arg, int from_tty) | |
1974 | { | |
1975 | struct thread_info *info; | |
1976 | ||
1977 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1978 | error (_("No thread selected")); | |
1979 | ||
529480d0 | 1980 | arg = skip_spaces (arg); |
4694da01 TT |
1981 | |
1982 | info = inferior_thread (); | |
1983 | xfree (info->name); | |
1984 | info->name = arg ? xstrdup (arg) : NULL; | |
1985 | } | |
1986 | ||
60f98dde MS |
1987 | /* Find thread ids with a name, target pid, or extra info matching ARG. */ |
1988 | ||
1989 | static void | |
1990 | thread_find_command (char *arg, int from_tty) | |
1991 | { | |
1992 | struct thread_info *tp; | |
73ede765 | 1993 | const char *tmp; |
60f98dde MS |
1994 | unsigned long match = 0; |
1995 | ||
1996 | if (arg == NULL || *arg == '\0') | |
1997 | error (_("Command requires an argument.")); | |
1998 | ||
1999 | tmp = re_comp (arg); | |
2000 | if (tmp != 0) | |
2001 | error (_("Invalid regexp (%s): %s"), tmp, arg); | |
2002 | ||
2003 | update_thread_list (); | |
2004 | for (tp = thread_list; tp; tp = tp->next) | |
2005 | { | |
2006 | if (tp->name != NULL && re_exec (tp->name)) | |
2007 | { | |
43792cf0 PA |
2008 | printf_filtered (_("Thread %s has name '%s'\n"), |
2009 | print_thread_id (tp), tp->name); | |
60f98dde MS |
2010 | match++; |
2011 | } | |
2012 | ||
2013 | tmp = target_thread_name (tp); | |
2014 | if (tmp != NULL && re_exec (tmp)) | |
2015 | { | |
43792cf0 PA |
2016 | printf_filtered (_("Thread %s has target name '%s'\n"), |
2017 | print_thread_id (tp), tmp); | |
60f98dde MS |
2018 | match++; |
2019 | } | |
2020 | ||
2021 | tmp = target_pid_to_str (tp->ptid); | |
2022 | if (tmp != NULL && re_exec (tmp)) | |
2023 | { | |
43792cf0 PA |
2024 | printf_filtered (_("Thread %s has target id '%s'\n"), |
2025 | print_thread_id (tp), tmp); | |
60f98dde MS |
2026 | match++; |
2027 | } | |
2028 | ||
2029 | tmp = target_extra_thread_info (tp); | |
2030 | if (tmp != NULL && re_exec (tmp)) | |
2031 | { | |
43792cf0 PA |
2032 | printf_filtered (_("Thread %s has extra info '%s'\n"), |
2033 | print_thread_id (tp), tmp); | |
60f98dde MS |
2034 | match++; |
2035 | } | |
2036 | } | |
2037 | if (!match) | |
2038 | printf_filtered (_("No threads match '%s'\n"), arg); | |
2039 | } | |
2040 | ||
93815fbf VP |
2041 | /* Print notices when new threads are attached and detached. */ |
2042 | int print_thread_events = 1; | |
2043 | static void | |
2044 | show_print_thread_events (struct ui_file *file, int from_tty, | |
2045 | struct cmd_list_element *c, const char *value) | |
2046 | { | |
3e43a32a MS |
2047 | fprintf_filtered (file, |
2048 | _("Printing of thread events is %s.\n"), | |
93815fbf VP |
2049 | value); |
2050 | } | |
2051 | ||
c5394b80 | 2052 | static int |
5d5658a1 | 2053 | do_captured_thread_select (struct ui_out *uiout, void *tidstr_v) |
c5394b80 | 2054 | { |
c0518081 | 2055 | const char *tidstr = (const char *) tidstr_v; |
c5394b80 JM |
2056 | struct thread_info *tp; |
2057 | ||
5d5658a1 PA |
2058 | if (ui_out_is_mi_like_p (uiout)) |
2059 | { | |
2060 | int num = value_as_long (parse_and_eval (tidstr)); | |
c906108c | 2061 | |
5d5658a1 PA |
2062 | tp = find_thread_global_id (num); |
2063 | if (tp == NULL) | |
2064 | error (_("Thread ID %d not known."), num); | |
2065 | } | |
2066 | else | |
2067 | { | |
2068 | tp = parse_thread_id (tidstr, NULL); | |
2069 | gdb_assert (tp != NULL); | |
2070 | } | |
c906108c SS |
2071 | |
2072 | if (!thread_alive (tp)) | |
5d5658a1 | 2073 | error (_("Thread ID %s has terminated."), tidstr); |
c906108c | 2074 | |
dcf4fbde | 2075 | switch_to_thread (tp->ptid); |
c906108c | 2076 | |
db5a7484 NR |
2077 | annotate_thread_changed (); |
2078 | ||
4034d0ff AT |
2079 | /* Since the current thread may have changed, see if there is any |
2080 | exited thread we can now delete. */ | |
2081 | prune_threads (); | |
2082 | ||
2083 | return GDB_RC_OK; | |
2084 | } | |
2085 | ||
2086 | /* Print thread and frame switch command response. */ | |
2087 | ||
2088 | void | |
2089 | print_selected_thread_frame (struct ui_out *uiout, | |
2090 | user_selected_what selection) | |
2091 | { | |
2092 | struct thread_info *tp = inferior_thread (); | |
2093 | struct inferior *inf = current_inferior (); | |
2094 | ||
2095 | if (selection & USER_SELECTED_THREAD) | |
5d5658a1 | 2096 | { |
4034d0ff AT |
2097 | if (ui_out_is_mi_like_p (uiout)) |
2098 | { | |
2099 | ui_out_field_int (uiout, "new-thread-id", | |
2100 | inferior_thread ()->global_num); | |
2101 | } | |
2102 | else | |
2103 | { | |
2104 | ui_out_text (uiout, "[Switching to thread "); | |
2105 | ui_out_field_string (uiout, "new-thread-id", print_thread_id (tp)); | |
2106 | ui_out_text (uiout, " ("); | |
2107 | ui_out_text (uiout, target_pid_to_str (inferior_ptid)); | |
2108 | ui_out_text (uiout, ")]"); | |
2109 | } | |
5d5658a1 | 2110 | } |
c5394b80 | 2111 | |
30596231 | 2112 | if (tp->state == THREAD_RUNNING) |
98871305 | 2113 | { |
4034d0ff AT |
2114 | if (selection & USER_SELECTED_THREAD) |
2115 | ui_out_text (uiout, "(running)\n"); | |
98871305 | 2116 | } |
4034d0ff AT |
2117 | else if (selection & USER_SELECTED_FRAME) |
2118 | { | |
2119 | if (selection & USER_SELECTED_THREAD) | |
2120 | ui_out_text (uiout, "\n"); | |
4f8d22e3 | 2121 | |
4034d0ff AT |
2122 | if (has_stack_frames ()) |
2123 | print_stack_frame_to_uiout (uiout, get_selected_frame (NULL), | |
2124 | 1, SRC_AND_LOC, 1); | |
2125 | } | |
c5394b80 JM |
2126 | } |
2127 | ||
2128 | enum gdb_rc | |
ce43223b | 2129 | gdb_thread_select (struct ui_out *uiout, char *tidstr, char **error_message) |
c5394b80 | 2130 | { |
b0b13bb4 DJ |
2131 | if (catch_exceptions_with_msg (uiout, do_captured_thread_select, tidstr, |
2132 | error_message, RETURN_MASK_ALL) < 0) | |
2133 | return GDB_RC_FAIL; | |
2134 | return GDB_RC_OK; | |
c906108c SS |
2135 | } |
2136 | ||
b57bacec PA |
2137 | /* Update the 'threads_executing' global based on the threads we know |
2138 | about right now. */ | |
2139 | ||
2140 | static void | |
2141 | update_threads_executing (void) | |
2142 | { | |
2143 | struct thread_info *tp; | |
2144 | ||
2145 | threads_executing = 0; | |
2146 | ALL_NON_EXITED_THREADS (tp) | |
2147 | { | |
2148 | if (tp->executing) | |
2149 | { | |
2150 | threads_executing = 1; | |
2151 | break; | |
2152 | } | |
2153 | } | |
2154 | } | |
2155 | ||
dc146f7c VP |
2156 | void |
2157 | update_thread_list (void) | |
2158 | { | |
e8032dde | 2159 | target_update_thread_list (); |
b57bacec | 2160 | update_threads_executing (); |
dc146f7c VP |
2161 | } |
2162 | ||
663f6d42 PA |
2163 | /* Return a new value for the selected thread's id. Return a value of |
2164 | 0 if no thread is selected. If GLOBAL is true, return the thread's | |
2165 | global number. Otherwise return the per-inferior number. */ | |
2166 | ||
2167 | static struct value * | |
2168 | thread_num_make_value_helper (struct gdbarch *gdbarch, int global) | |
2169 | { | |
2170 | struct thread_info *tp = find_thread_ptid (inferior_ptid); | |
2171 | int int_val; | |
2172 | ||
2173 | if (tp == NULL) | |
2174 | int_val = 0; | |
2175 | else if (global) | |
2176 | int_val = tp->global_num; | |
2177 | else | |
2178 | int_val = tp->per_inf_num; | |
2179 | ||
2180 | return value_from_longest (builtin_type (gdbarch)->builtin_int, int_val); | |
2181 | } | |
2182 | ||
5d5658a1 PA |
2183 | /* Return a new value for the selected thread's per-inferior thread |
2184 | number. Return a value of 0 if no thread is selected, or no | |
2185 | threads exist. */ | |
6aed2dbc SS |
2186 | |
2187 | static struct value * | |
663f6d42 PA |
2188 | thread_id_per_inf_num_make_value (struct gdbarch *gdbarch, struct internalvar *var, |
2189 | void *ignore) | |
6aed2dbc | 2190 | { |
663f6d42 PA |
2191 | return thread_num_make_value_helper (gdbarch, 0); |
2192 | } | |
2193 | ||
2194 | /* Return a new value for the selected thread's global id. Return a | |
2195 | value of 0 if no thread is selected, or no threads exist. */ | |
6aed2dbc | 2196 | |
663f6d42 PA |
2197 | static struct value * |
2198 | global_thread_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, | |
2199 | void *ignore) | |
2200 | { | |
2201 | return thread_num_make_value_helper (gdbarch, 1); | |
6aed2dbc SS |
2202 | } |
2203 | ||
c906108c SS |
2204 | /* Commands with a prefix of `thread'. */ |
2205 | struct cmd_list_element *thread_cmd_list = NULL; | |
2206 | ||
22d2b532 SDJ |
2207 | /* Implementation of `thread' variable. */ |
2208 | ||
2209 | static const struct internalvar_funcs thread_funcs = | |
2210 | { | |
663f6d42 PA |
2211 | thread_id_per_inf_num_make_value, |
2212 | NULL, | |
2213 | NULL | |
2214 | }; | |
2215 | ||
2216 | /* Implementation of `gthread' variable. */ | |
2217 | ||
2218 | static const struct internalvar_funcs gthread_funcs = | |
2219 | { | |
2220 | global_thread_id_make_value, | |
22d2b532 SDJ |
2221 | NULL, |
2222 | NULL | |
2223 | }; | |
2224 | ||
c906108c | 2225 | void |
fba45db2 | 2226 | _initialize_thread (void) |
c906108c SS |
2227 | { |
2228 | static struct cmd_list_element *thread_apply_list = NULL; | |
c906108c | 2229 | |
60f98dde MS |
2230 | add_info ("threads", info_threads_command, |
2231 | _("Display currently known threads.\n\ | |
c84f6bbf PA |
2232 | Usage: info threads [-gid] [ID]...\n\ |
2233 | -gid: Show global thread IDs.\n\ | |
5d5658a1 PA |
2234 | If ID is given, it is a space-separated list of IDs of threads to display.\n\ |
2235 | Otherwise, all threads are displayed.")); | |
c906108c | 2236 | |
d729566a | 2237 | add_prefix_cmd ("thread", class_run, thread_command, _("\ |
1bedd215 AC |
2238 | Use this command to switch between threads.\n\ |
2239 | The new thread ID must be currently known."), | |
d729566a | 2240 | &thread_cmd_list, "thread ", 1, &cmdlist); |
c906108c | 2241 | |
d729566a PA |
2242 | add_prefix_cmd ("apply", class_run, thread_apply_command, |
2243 | _("Apply a command to a list of threads."), | |
2244 | &thread_apply_list, "thread apply ", 1, &thread_cmd_list); | |
c906108c | 2245 | |
d729566a | 2246 | add_cmd ("all", class_run, thread_apply_all_command, |
253828f1 JK |
2247 | _("\ |
2248 | Apply a command to all threads.\n\ | |
2249 | \n\ | |
2250 | Usage: thread apply all [-ascending] <command>\n\ | |
2251 | -ascending: Call <command> for all threads in ascending order.\n\ | |
2252 | The default is descending order.\ | |
2253 | "), | |
2254 | &thread_apply_list); | |
c906108c | 2255 | |
4694da01 TT |
2256 | add_cmd ("name", class_run, thread_name_command, |
2257 | _("Set the current thread's name.\n\ | |
2258 | Usage: thread name [NAME]\n\ | |
2259 | If NAME is not given, then any existing name is removed."), &thread_cmd_list); | |
2260 | ||
60f98dde MS |
2261 | add_cmd ("find", class_run, thread_find_command, _("\ |
2262 | Find threads that match a regular expression.\n\ | |
2263 | Usage: thread find REGEXP\n\ | |
2264 | Will display thread ids whose name, target ID, or extra info matches REGEXP."), | |
2265 | &thread_cmd_list); | |
2266 | ||
4f45d445 | 2267 | add_com_alias ("t", "thread", class_run, 1); |
93815fbf VP |
2268 | |
2269 | add_setshow_boolean_cmd ("thread-events", no_class, | |
2270 | &print_thread_events, _("\ | |
11c68c47 EZ |
2271 | Set printing of thread events (such as thread start and exit)."), _("\ |
2272 | Show printing of thread events (such as thread start and exit)."), NULL, | |
93815fbf VP |
2273 | NULL, |
2274 | show_print_thread_events, | |
2275 | &setprintlist, &showprintlist); | |
6aed2dbc | 2276 | |
22d2b532 | 2277 | create_internalvar_type_lazy ("_thread", &thread_funcs, NULL); |
663f6d42 | 2278 | create_internalvar_type_lazy ("_gthread", >hread_funcs, NULL); |
e1316e60 PA |
2279 | |
2280 | observer_attach_thread_ptid_changed (restore_current_thread_ptid_changed); | |
c906108c | 2281 | } |